SDL_sound_CoreAudio: alt_audio

annotate alt_audio_convert.c @ 533:cad2940e992f stable-1.0

Updated.

author	Ryan C. Gordon <icculus@icculus.org>
date	Thu, 17 Apr 2008 17:55:22 +0000
parents	636796aed4e2
children	45ee760a6f5a

rev	line source
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	1 /*
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	2 * Extended Audio Converter for SDL (Simple DirectMedia Layer)
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	3 * Copyright (C) 2002 Frank Ranostaj
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	4 * Institute of Applied Physik
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	5 * Johann Wolfgang Goethe-Universität
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	6 * Frankfurt am Main, Germany
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	7 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	8 * This library is free software; you can redistribute it and/or
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	9 * modify it under the terms of the GNU Library General Public
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	10 * License as published by the Free Software Foundation; either
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	11 * version 2 of the License, or (at your option) any later version.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	12 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	13 * This library is distributed in the hope that it will be useful,
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	16 * Library General Public License for more details.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	17 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	18 * You should have received a copy of the GNU Library General Public
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	19 * License along with this library; if not, write to the Free
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	21 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	22 * Frank Ranostaj
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	23 * ranostaj@stud.uni-frankfurt.de
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	24 *
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	25 * (This code blatantly abducted for SDL_sound. Thanks, Frank! --ryan.)
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	26 */
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27
465 636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	28 #if HAVE_CONFIG_H
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	29 # include <config.h>
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	30 #endif
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	31
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	32 #if SOUND_USE_ALTCVT
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	33
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34 #include "alt_audio_convert.h"
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35 #include <math.h>
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	37 /* just to make sure this is defined... */
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	38
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	39 #ifndef min
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	40 #define min(x, y) ( ((x) < (y)) ? (x) : (y) )
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	41 #endif
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	42
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	43 #ifndef max
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	44 #define max(x, y) ( ((x) > (y)) ? (x) : (y) )
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	45 #endif
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	46
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	47 #ifndef abs
eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	48 #define abs(x) ( ((x) > (0)) ? (x) : -(x) )
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	49 #endif
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	50
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	51
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	52 /* some macros for "parsing" format */
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	53
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	54 #define IS_8BIT(x) ((x).format & 0x0008)
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	55 #define IS_16BIT(x) ((x).format & 0x0010)
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	56 #define IS_FLOAT(x) ((x).format & 0x0020)
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	57 #define IS_SIGNED(x) ((x).format & 0x8000)
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	58 #define IS_SYSENDIAN(x) ((~AUDIO_U16SYS ^ (x).format) & 0x1000)
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	59 #define SDL_MSB_POSITION_IN_SHORT ((0x1000 & AUDIO_U16SYS)>>12)
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	60
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	61
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	62 /-------------------------------------------------------------------------/
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	63 /* the purpose of the RateConverterBuffer is to provide a continous storage
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	64 for head and tail of the (sample)-buffer. This allows a simple and
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	65 perfomant implemantation of the sample rate converters. Depending of the
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	66 operation mode, two layouts for the RateConverterBuffer.inbuffer are
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	67 possible:
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	68
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	69 in the Loop Mode:
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	70 ... T-4 T-3 T-2 T-1 H+0 H+1 H+2 H+3 H+4 ...
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	71 \|
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	72 linp, finp
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	73
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	74 in the Single Mode (non Loop):
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	75 ... T-4 T-3 T-2 T-1 0 0 0 ... 0 0 0 H+0 H+1 H+2 H+3 H+4 ...
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	76 \| \|
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	77 linp finp
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	78
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	79 The RateConverterBuffer allows an accurate attack and decay of the
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	80 filters in the rate Converters.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	81
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	82 The pointer finp are actually shifted against the depicted position so
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	83 that on the first invocation of the rate converter the input of the
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	84 filter is nearly complete in the zero region, only one input value is
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	85 used. After the calculation of the first output value, the pointer are
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	86 incremented or decremented depending on down or up conversion and the
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	87 first two input value are taken into account. This procedure repeats
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	88 until the filter has processed all zeroes. The distance of the pointer
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	89 movement is stored in flength, always positive.
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	90
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	91 Further a pointer cinp to the sample buffer itself is stored. The pointer
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	92 to the sample buffer is shifted too, so that on the first use of this
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	93 pointer the filter is complete in the sample buffer. The pointer moves
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	94 over the sample buffer until it reaches the other end. The distance of
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	95 the movement is stored in clength.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	96
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	97 Finally the decay of the filter is done by linp and llength like finp,
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	98 flength, but in reverse order.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	99
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	100 buffer denotes the start or the end of the output buffer, depending
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	101 on direction of the rate conversion.
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	102
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	103 All pointer and length referring the buffer as Sint16. All length
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	104 are refering to the input buffer */
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	105
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	106 typedef struct
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	107 {
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	108 Sint16 inbuffer[24*_fsize];
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	109 Sint16 finp, cinp, *linp;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	110 int flength, clength, llength;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	111 Sint16 *buffer;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	112 VarFilter *filter;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	113 } RateConverterBuffer;
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	114
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	115 typedef struct
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	116 {
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	117 Sint16 carry;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	118 Sint16 pos;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	119 } RateAux;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	120
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	121
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	122 /* Mono (1 channel ) */
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	123 #define Suffix(x) x##1
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	124 #include "filter_templates.h"
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	125 #undef Suffix
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	126
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	127 /* Stereo (2 channel ) */
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	128 #define Suffix(x) x##2
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	129 #include "filter_templates.h"
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	130 #undef Suffix
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	131
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	132
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	133 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	134 int Sound_estimateBufferSize( Sound_AudioCVT *Data, int size )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	135 {
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	136 size *= Data->len_mult;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	137 size += Data->len_add;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	138 return ( size + 3 ) & -4; /* force Size in multipels of 4 Byte */
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	139 }
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	140
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	141 /-------------------------------------------------------------------------/
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	142 int Sound_AltConvertAudio( Sound_AudioCVT *Data,
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	143 Uint8* buffer, int length, int mode )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	144 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	145 AdapterC Temp;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	146 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	147
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	148 /* Make sure there's a converter */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	149 if( Data == NULL ) {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	150 SDL_SetError("No converter given");
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	151 return(-1);
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	152 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	153
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	154 /* Make sure there's data to convert */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	155 if( buffer == NULL ) {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	156 SDL_SetError("No buffer allocated for conversion");
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	157 return(-1);
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	158 }
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	159
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	160 if( length < 0 ) {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	161 SDL_SetError("Lenght < 0");
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	162 return(-1);
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	163 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	164
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	165 /* Set up the conversion and go! */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	166 Temp.buffer = buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	167 Temp.mode = mode;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	168 Temp.filter = &Data->filter;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	169
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	170 for( i = 0; Data->adapter[i] != NULL; i++ )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	171 length = (*Data->adapter[i])( Temp, length);
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	172
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	173 return length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	174 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	175
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	176 int Sound_ConvertAudio( Sound_AudioCVT *Data )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	177 {
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	178 int length;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	179 /* !!! FIXME: Try the looping stuff under certain circumstances? --ryan. */
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	180 length = Sound_AltConvertAudio( Data, Data->buf, Data->len, 0 );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	181 Data->len_cvt = length;
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	182 return length;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	183 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	185 /-------------------------------------------------------------------------/
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	186 static int expand8BitTo16BitSys( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	187 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	188 int i;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	189 Uint8* inp = Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	190 Uint16* buffer = (Uint16*)Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	191 for( i = length + 1; --i; )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	192 buffer[i] = inp[i]<<8;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	193 return 2*length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	194 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	196 static int expand8BitTo16BitWrong( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	197 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	198 int i;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	199 Uint8* inp = Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	200 Uint16* buffer = (Uint16*)Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	201 for( i = length + 1; --i; )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	202 buffer[i] = inp[i];
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	203 return 2*length;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	204 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	205
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	206 /-------------------------------------------------------------------------/
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	207 static int expand16BitToFloat( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	208 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	209 int i;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	210 Sint16* inp = (Sint16*)Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	211 float* buffer = (float*)Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	212 for( i = length>>1 + 1; --i; )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	213 buffer[i] = inp[i]*(1./32767);
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	214 return 2*length;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	215 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	216
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	217 /-------------------------------------------------------------------------/
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	218 static int swapBytes( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	219 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	220 /*
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	221 * !!! FIXME !!!
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	222 *
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	223 *
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	224 * Use the faster SDL-Macros to swap
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	225 * - Frank
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	226 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	227
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	228 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	229 Uint16 a,b;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	230 Uint16* buffer = (Uint16*) Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	231 for( i = length>>1 + 1; --i; )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	232 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	233 a = b = buffer[i];
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	234 buffer[i] = ( a << 8 ) \| ( b >> 8 );
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	235 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	236 return length;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	237 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	238
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	239 /-------------------------------------------------------------------------/
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	240 static int cutFloatTo16Bit( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	241 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	242 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	243 float* inp = (float*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	244 Sint16* buffer = (Sint16*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	245 length>>=2;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	246 for( i = 0; i < length; i++ )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	247 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	248 if( inp[i] > 1. )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	249 buffer[i] = 32767;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	250 else if( inp[i] < -1. )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	251 buffer[i] = -32768;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	252 else
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	253 buffer[i] = 32767 * inp[i];
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	254 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	255 return 2*length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	256 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	257
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	258 /-------------------------------------------------------------------------/
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	259 static int cut16BitTo8Bit( AdapterC Data, int length, int off )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	260 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	261 int i;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	262 Uint8* inp = Data.buffer + off;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	263 Uint8* buffer = Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	264 length >>= 1;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	265 for( i = 0; i < length; i++ )
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	266 buffer[i] = inp[2*i];
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	267 return length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	268 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	269
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	270 static int cut16BitSysTo8Bit( AdapterC Data, int length )
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	271 {
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	272 return cut16BitTo8Bit( Data, length, SDL_MSB_POSITION_IN_SHORT );
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	273 }
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	274
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	275 static int cut16BitWrongTo8Bit( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	276 {
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	277 return cut16BitTo8Bit( Data, length, 1-SDL_MSB_POSITION_IN_SHORT );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	278 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	279
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	280 /-------------------------------------------------------------------------/
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	281 /* poor mans mmx :-) */
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	282 static int changeSigned( AdapterC Data, int length, Uint32 XOR )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	283 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	284 int i;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	285 Uint32* buffer = (Uint32*) Data.buffer - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	286 for( i = ( length + 7 ) >> 2; --i; )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	287 buffer[i] ^= XOR;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	288 return length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	289 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	290
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	291 static int changeSigned16BitSys( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	292 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	293 return changeSigned( Data, length, 0x80008000 );
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	294 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	295
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	296 static int changeSigned16BitWrong( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	297 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	298 return changeSigned( Data, length, 0x00800080 );
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	299 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	300
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	301 static int changeSigned8Bit( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	302 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	303 return changeSigned( Data, length, 0x80808080 );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	304 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	305
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	306 /-------------------------------------------------------------------------/
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	307 static int convertStereoToMonoS16Bit( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	308 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	309 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	310 Sint16* buffer = (Sint16*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	311 Sint16* src = (Sint16*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	312 length >>= 2;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	313 for( i = 0; i < length; i++, src+=2 )
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	314 buffer[i] = ((int) src[0] + src[1] ) >> 1;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	315 return 2*length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	316 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	317
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	318 static int convertStereoToMonoU16Bit( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	319 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	320 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	321 Uint16* buffer = (Uint16*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	322 Uint16* src = (Uint16*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	323 length >>= 2;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	324 for( i = 0; i < length; i++, src+=2 )
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	325 buffer[i] = ((int) src[0] + src[1] ) >> 1;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	326 return 2*length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	327 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	328
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	329 static int convertStereoToMonoS8Bit( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	330 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	331 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	332 Sint8* buffer = (Sint8*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	333 Sint8* src = (Sint8*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	334 length >>= 1;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	335 for( i = 0; i < length; i++, src+=2 )
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	336 buffer[i] = ((int) src[0] + src[1] ) >> 1;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	337 return length;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	338 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	339
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	340 static int convertStereoToMonoU8Bit( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	341 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	342 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	343 Uint8* buffer = (Uint8*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	344 Uint8* src = (Uint8*) Data.buffer;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	345 length >>= 1;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	346 for( i = 0; i < length; i++, src+=2 )
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	347 buffer[i] = ((int) src[0] + src[1] ) >> 1;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	348 return length;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	349 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	350
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	351 /-------------------------------------------------------------------------/
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	352 static int convertMonoToStereo16Bit( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	353 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	354 int i;
421 a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	355 Uint16* buffer;
a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	356 Uint16* dst;
a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	357
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	358 length >>=1;
421 a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	359 buffer = (Uint16*)Data.buffer - 1;
a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	360 dst = (Uint16)Data.buffer + 2length - 2;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	361 for( i = length + 1; --i; dst-=2 )
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	362 dst[0] = dst[1] = buffer[i];
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	363 return 4*length;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	364 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	365
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	366 static int convertMonoToStereo8Bit( AdapterC Data, int length )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	367 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	368 int i;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	369 Uint8* buffer = Data.buffer - 1;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	370 Uint8* dst = Data.buffer + 2*length - 2;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	371 for( i = length + 1; --i; dst-=2 )
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	372 dst[0] = dst[1] = buffer[i];
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	373 return 2*length;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	374 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	375
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	376 /-------------------------------------------------------------------------/
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	377 static int minus5dB( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	378 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	379 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	380 Sint16* buffer = (Sint16*) Data.buffer;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	381 for(i = length>>1 + 1; --i; )
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	382 buffer[i] = (38084 * (int)buffer[i]) >> 16;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	383 return length;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	384 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	385
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	386 /-------------------------------------------------------------------------/
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	387 const Fraction Half = {1, 2};
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	388 const Fraction Double = {2, 1};
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	389 const Fraction One = {1, 1};
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	390
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	391
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	392 static void initStraigthBuffer( RateConverterBuffer *rcb,
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	393 int length, Fraction r )
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	394 {
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	395 int i, size, minsize;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	396 size = 8 * _fsize;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	397 minsize = min( size, length );
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	398
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	399 for( i = 0; i < minsize; i++ )
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	400 {
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	401 rcb->inbuffer[i] = rcb->buffer[length-size+i];
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	402 rcb->inbuffer[i+size] = 0;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	403 rcb->inbuffer[i+2*size] = rcb->buffer[i];
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	404 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	405 for( ; i < size; i++ )
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	406 {
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	407 rcb->inbuffer[i] = 0;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	408 rcb->inbuffer[i+size] = 0;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	409 rcb->inbuffer[i+2*size] = 0;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	410 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	411
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	412 length = max( length, size );
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	413 rcb->flength = rcb->llength = size;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	414 rcb->clength = length - size;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	415
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	416 if( r.numerator < r.denominator )
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	417 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	418 rcb->finp = rcb->inbuffer + 5*size/2;
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	419 rcb->cinp = rcb->buffer + length - size/2;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	420 rcb->linp = rcb->inbuffer + 3*size/2;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	421 rcb->buffer += ( 1 + r.denominator * ( length + size )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	422 / r.numerator ) & -2;
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	423 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	424 else
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	425 {
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	426 rcb->finp = rcb->inbuffer + size/2;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	427 rcb->cinp = rcb->buffer + size/2;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	428 rcb->linp = rcb->inbuffer + 3*size/2;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	429 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	430 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	431
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	432 static void initLoopBuffer( RateConverterBuffer *rcb,
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	433 int length, Fraction r )
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	434 {
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	435 /* !!!FIXME: modulo length, take scale into account,
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	436 check against the Straight part -frank */
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	437 int i, size;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	438 size = 8 * _fsize;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	439 for( i = 0; i < size; i++ )
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	440 {
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	441 rcb->inbuffer[i] = rcb->buffer[length-size+i];
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	442 rcb->inbuffer[i+size] = rcb->buffer[i];
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	443 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	444 rcb->finp = rcb->linp = rcb->inbuffer + size;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	445 if( size < 0 )
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	446 rcb->buffer += r.numerator * ( length + 2 * size )
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	447 / r.denominator;
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	448 }
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	449
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	450 static void initRateConverterBuffer( RateConverterBuffer *rcb,
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	451 AdapterC* Data, int length, Fraction ratio )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	452 {
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	453 length >>= 1;
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	454 rcb->buffer = (Sint16*)( Data->buffer );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	455 rcb->filter = Data->filter;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	456
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	457 if( Data->mode & SDL_SOUND_Loop )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	458 initLoopBuffer( rcb, length, ratio );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	459 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	460 initStraigthBuffer( rcb, length, ratio );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	461
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	462 fprintf( stderr, " finp: %8x length: %8x\n", rcb->finp, rcb->flength );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	463 fprintf( stderr, " cinp: %8x length: %8x\n", rcb->cinp, rcb->clength );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	464 fprintf( stderr, " linp: %8x length: %8x\n", rcb->linp, rcb->llength );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	465 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	466
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	467 static void nextRateConverterBuffer( RateConverterBuffer *rcb )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	468 {
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	469 rcb->buffer++;
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	470 rcb->finp++;
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	471 rcb->cinp++;
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	472 rcb->linp++;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	473 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	474
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	475 typedef Sint16* (RateConverter)( Sint16, Sint16*, int,
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	476 VarFilter, RateAux );
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	477
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	478 static Sint16* doRateConversion( RateConverterBuffer* rcb, RateConverter rc )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	479 {
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	480 RateAux aux = {0,0};
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	481 Sint16 *outp = rcb->buffer;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	482 VarFilter* filter = rcb->filter;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	483
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	484 outp = (*rc)( outp, rcb->finp, rcb->flength, filter, &aux );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	485 fprintf( stderr, " outp: %8x aux.carry: %8x\n", outp, aux.carry );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	486 outp = (*rc)( outp, rcb->cinp, rcb->clength, filter, &aux );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	487 fprintf( stderr, " outp: %8x aux.carry: %8x\n", outp, aux.carry );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	488 outp = (*rc)( outp, rcb->linp, rcb->llength, filter, &aux );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	489 fprintf( stderr, " outp: %8x aux.carry: %8x\n", outp, aux.carry );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	490 return outp;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	491 }
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	492
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	493
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	494 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	495 static void clearSint16Buffer( Sint8* buffer, Sint16*r )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	496 {
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	497 while( r >= (Sint16)buffer ) r-- = 0;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	498 }
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	499
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	500 /-------------------------------------------------------------------------/
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	501 static int doubleRateMono( AdapterC Data, int length )
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	502 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	503 Sint16* r;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	504 RateConverterBuffer rcb;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	505 initRateConverterBuffer( &rcb, &Data, length, Half );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	506 r = 1 + doRateConversion( &rcb, doubleRate1 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	507 clearSint16Buffer( Data.buffer, r );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	508 return 2 * ( rcb.buffer - (Sint16*)Data.buffer + 2 );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	509 }
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	510
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	511 static int doubleRateStereo( AdapterC Data, int length )
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	512 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	513 Sint16* r;
421 a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	514 RateConverterBuffer rcb;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	515 fprintf( stderr, "\n Buffer: %8x length: %8x\n", Data.buffer, length );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	516 initRateConverterBuffer( &rcb, &Data, length, Half );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	517 doRateConversion( &rcb, doubleRate2 );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	518 nextRateConverterBuffer( &rcb );
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	519 r = 2 + doRateConversion( &rcb, doubleRate2 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	520 clearSint16Buffer( Data.buffer, r );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	521 return 2 * ( rcb.buffer - (Sint16*)Data.buffer + 3 );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	522 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	523
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	524 /-------------------------------------------------------------------------/
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	525 static int halfRateMono( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	526 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	527 Sint16* r;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	528 RateConverterBuffer rcb;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	529 initRateConverterBuffer( &rcb, &Data, length, Double );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	530 r = doRateConversion( &rcb, halfRate1 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	531 return 2 * ( r - (Sint16*)Data.buffer );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	532 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	533
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	534 static int halfRateStereo( AdapterC Data, int length )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	535 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	536 Sint16* r;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	537 RateConverterBuffer rcb;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	538 initRateConverterBuffer( &rcb, &Data, length, Double );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	539 doRateConversion( &rcb, halfRate2 );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	540 nextRateConverterBuffer( &rcb );
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	541 r = doRateConversion( &rcb, halfRate2 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	542 return 2 * ( r - (Sint16*)Data.buffer );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	543 }
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	544
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	545 /-------------------------------------------------------------------------/
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	546 static int increaseRateMono( AdapterC Data, int length )
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	547 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	548 Sint16* r;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	549 RateConverterBuffer rcb;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	550 initRateConverterBuffer( &rcb, &Data, length, Data.filter->ratio );
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	551 r = doRateConversion( &rcb, increaseRate1 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	552 clearSint16Buffer( Data.buffer, r );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	553 return 2 * ( rcb.buffer - (Sint16*)Data.buffer + 1 );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	554 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	555
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	556 static int increaseRateStereo( AdapterC Data, int length )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	557 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	558 Sint16* r;
421 a65440b3a057 Patched to compile. Ryan C. Gordon <icculus@icculus.org> parents: 420 diff changeset	559 RateConverterBuffer rcb;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	560 fprintf( stderr, "\n Buffer: %8x length: %8x\n", Data.buffer, length );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	561 initRateConverterBuffer( &rcb, &Data, length, Data.filter->ratio );
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	562 doRateConversion( &rcb, increaseRate2 );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	563 nextRateConverterBuffer( &rcb );
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	564 r = doRateConversion( &rcb, increaseRate2 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	565 clearSint16Buffer( Data.buffer, r );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	566 return 2 * ( rcb.buffer - (Sint16*)Data.buffer + 1 );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	567 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	568
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	569 /-------------------------------------------------------------------------/
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	570 static int decreaseRateMono( AdapterC Data, int length )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	571 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	572 Sint16* r;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	573 RateConverterBuffer rcb;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	574 initRateConverterBuffer( &rcb, &Data, length, Data.filter->ratio );
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	575 r = doRateConversion( &rcb, decreaseRate1 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	576 return 2 * ( r - (Sint16*)Data.buffer );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	577 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	578
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	579 static int decreaseRateStereo( AdapterC Data, int length )
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	580 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	581 Sint16* r;
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	582 RateConverterBuffer rcb;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	583 initRateConverterBuffer( &rcb, &Data, length, Data.filter->ratio );
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	584 doRateConversion( &rcb, decreaseRate2 );
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	585 nextRateConverterBuffer( &rcb );
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	586 r = doRateConversion( &rcb, decreaseRate2 );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	587 return 2 * ( r - (Sint16*)Data.buffer );
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	588 }
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	589
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	590 /-------------------------------------------------------------------------/
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	591 /* gives a maximal error of 3% and typical less than 0.2% */
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	592 static Fraction findFraction( float Value )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	593 {
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	594 const Sint8 frac[95]={
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	595 2, -1, /* /1 */
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	596 1, 3, -1, /* /2 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	597 2, 4, 5, -1, /* /3 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	598 3, 5, 7, -1, /* /4 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	599 3, 4, 6, 7, 8, 9, -1, /* /5 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	600 5, 7, 11, -1, /* /6 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	601 4, 5, 6, 8, 9, 10, 11, 12, 13, -1, /* /7 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	602 5, 7, 9, 11, 13, 15, -1, /* /8 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	603 5, 7, 8, 10, 11, 13, 14, 16, -1, /* /9 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	604 7, 9, 11, 13, -1, /* /10 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	605 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, -1, /* /11 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	606 7, 11, 13, -1, /* /12 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	607 7, 8, 9, 10, 11, 12, 14, 15, 16, -1, /* /13 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	608 9, 11, 13, 15, -1, /* /14 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	609 8, 11, 13, 14, 16, -1, /* /15 */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	610 9, 11, 13, 15 }; /* /16 */
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	611
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	612
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	613 Fraction Result = {0,0};
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	614 int i,num,den=1;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	615
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	616 float RelErr, BestErr = 0;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	617 if( Value < 31/64. \|\| Value > 64/31. ) return Result;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	618
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	619 for( i = 0; i < SDL_TABLESIZE(frac); i++ )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	620 {
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	621 num = frac[i];
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	622 if( num < 0 ) den++;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	623 RelErr = Value * num / den;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	624 RelErr = min( RelErr, 1/RelErr );
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	625 if( RelErr > BestErr )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	626 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	627 BestErr = RelErr;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	628 Result.denominator = den;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	629 Result.numerator = num;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	630 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	631 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	632 return Result;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	633 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	634
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	635 /-------------------------------------------------------------------------/
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	636 static float sinc( float x )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	637 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	638 if( x > -1e-24 && x < 1e-24 ) return 1.;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	639 else return sin(x)/x;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	640 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	641
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	642 static float calculateVarFilter( Sint16* dst,
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	643 float Ratio, float phase, float scale )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	644 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	645 const Uint16 KaiserWindow7[]= {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	646 22930, 16292, 14648, 14288, 14470, 14945, 15608, 16404,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	647 17304, 18289, 19347, 20467, 21644, 22872, 24145, 25460,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	648 26812, 28198, 29612, 31052, 32513, 33991, 35482, 36983,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	649 38487, 39993, 41494, 42986, 44466, 45928, 47368, 48782,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	650 50165, 51513, 52821, 54086, 55302, 56466, 57575, 58624,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	651 59610, 60529, 61379, 62156, 62858, 63483, 64027, 64490,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	652 64870, 65165, 65375, 65498, 65535, 65484, 65347, 65124,
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	653 64815, 64422, 63946, 63389, 62753, 62039, 61251, 60391 };
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	654 int i;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	655 float w;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	656 const float fg = -.018 + .5 * Ratio;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	657 const float omega = 2 * M_PI * fg;
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	658 fprintf( stderr, " phase: %6g \n", phase );
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	659 phase += 63;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	660 for( i = 0; i < 64; i++)
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	661 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	662 w = scale * ( KaiserWindow7[i] * ( i + 1 ));
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	663 dst[i] = w * sinc( omega * (i-phase) );
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	664 dst[127-i] = w * sinc( omega * (127-i-phase) );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	665 }
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	666 fprintf( stderr, " center: %6d %6d \n", dst[63], dst[64] );
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	667 return fg;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	668 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	669
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	670 static Fraction setupVarFilter( Sound_AudioCVT *Data, float Ratio )
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	671 {
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	672 int pos,n,d, incr, phase = 0;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	673 float Scale, rd, fg;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	674 Fraction IRatio;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	675 VarFilter* filter = &Data->filter;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	676
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	677 IRatio = findFraction( Ratio );
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	678 // Scale = Ratio < 1. ? 0.0364733 : 0.0211952;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	679 Scale = 0.0084778;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	680 Ratio = min( Ratio, 0.97 );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	681
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	682 filter->ratio = IRatio;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	683 n = IRatio.numerator;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	684 d = IRatio.denominator;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	685 rd = 1. / d;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	686
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	687 fprintf( stderr, "Filter:\n" );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	688
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	689 for( pos = 0; pos < d; pos++ )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	690 {
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	691 fg = calculateVarFilter( filter->c[pos], Ratio, phase*rd, Scale );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	692 phase += n;
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	693 filter->incr[pos] = phase / d;
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	694 phase %= d;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	695 }
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	696 fprintf( stderr, " fg: %6g\n\n", fg );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	697 /* !!!FIXME: get rid of the inversion -Frank*/
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	698 IRatio.numerator = d;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	699 IRatio.denominator = n;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	700 return IRatio;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	701 }
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	702 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	703 static void initAudioCVT( Sound_AudioCVT *Data )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	704 {
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	705 Data->len_ratio = 1.;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	706 Data->len_mult = 1;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	707 Data->add = 0;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	708 Data->len_add = 0;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	709 Data->filter_index = 0;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	710 }
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	711
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	712 static void adjustSize( Sound_AudioCVT *Data, int add, Fraction f )
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	713 {
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	714 double ratio = f.numerator / (double) f.denominator;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	715 Data->len_ratio *= ratio;
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	716 Data->len_mult = max( Data->len_mult, ceil(Data->len_ratio) );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	717 Data->add = ratio * (Data->add + add);
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	718 Data->len_add = max( Data->len_add, ceil(Data->add) );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	719 }
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	720
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	721 static Adapter* addAdapter( Sound_AudioCVT *Data, Adapter a )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	722 {
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	723 Data->adapter[Data->filter_index] = a;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	724 return &Data->adapter[Data->filter_index++];
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	725 }
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	726
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	727 static void addHAdapter( Sound_AudioCVT *Data, Adapter a )
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	728 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	729 adjustSize( Data, 0, Half );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	730 addAdapter( Data, a );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	731 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	732
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	733 static void addDAdapter( Sound_AudioCVT *Data, Adapter a )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	734 {
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	735 adjustSize( Data, 0, Double );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	736 addAdapter( Data, a );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	737 }
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	738
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	739
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	740 /-------------------------------------------------------------------------/
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	741 const Adapter doubleRate[2] = { doubleRateMono, doubleRateStereo };
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	742 const Adapter halfRate[2] = { halfRateMono, halfRateStereo };
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	743 const Adapter increaseRate[2] = { increaseRateMono, increaseRateStereo };
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	744 const Adapter decreaseRate[2] = { decreaseRateMono, decreaseRateStereo };
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	745
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	746 static int createRateConverter( Sound_AudioCVT *Data,
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	747 int SrcRate, int DestRate, int channel )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	748 {
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	749 const int c = channel - 1;
b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	750 const int size = 16 * channel * _fsize;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	751 Adapter* AdapterPos;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	752 float Ratio = DestRate;
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	753 Fraction f;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	754
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	755 if( SrcRate < 1 \|\| SrcRate > 1<<18 \|\|
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	756 DestRate < 1 \|\| DestRate > 1<<18 ) return -1;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	757 Ratio /= SrcRate;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	758
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	759 AdapterPos = addAdapter( Data, minus5dB );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	760
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	761 while( Ratio > 64./31.)
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	762 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	763 Ratio /= 2.;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	764 addAdapter( Data, doubleRate[c] );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	765 adjustSize( Data, size, Double );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	766 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	767
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	768 while( Ratio < 31./64. )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	769 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	770 Ratio *= 2;
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	771 addAdapter( Data, halfRate[c] );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	772 adjustSize( Data, size, Half );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	773 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	774
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	775 if( Ratio > 1. )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	776 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	777 *AdapterPos = increaseRate[c];
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	778 f = setupVarFilter( Data, Ratio );
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	779 adjustSize( Data, size, f );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	780 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	781 else
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	782 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	783 f = setupVarFilter( Data, Ratio );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	784 addAdapter( Data, decreaseRate[c]);
403 b1e511c879d1 More altcvt updates and fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 380 diff changeset	785 adjustSize( Data, size, f );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	786 }
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	787
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	788 return 0;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	789 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	790
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	791 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	792 static void createFormatConverter16Bit(Sound_AudioCVT *Data,
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	793 SDL_AudioSpec src, SDL_AudioSpec dst )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	794 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	795 if( src.channels == 2 && dst.channels == 1 )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	796 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	797 if( !IS_SYSENDIAN(src) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	798 addAdapter( Data, swapBytes );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	799
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	800 if( IS_SIGNED(src) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	801 addHAdapter( Data, convertStereoToMonoS16Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	802 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	803 addHAdapter( Data, convertStereoToMonoU16Bit );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	804
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	805 if( !IS_SYSENDIAN(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	806 addAdapter( Data, swapBytes );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	807 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	808 else if( IS_SYSENDIAN(src) != IS_SYSENDIAN(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	809 addAdapter( Data, swapBytes );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	810
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	811 if( IS_SIGNED(src) != IS_SIGNED(dst) )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	812 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	813 if( IS_SYSENDIAN(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	814 addAdapter( Data, changeSigned16BitSys );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	815 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	816 addAdapter( Data, changeSigned16BitWrong );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	817 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	818
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	819 if( src.channels == 1 && dst.channels == 2 )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	820 addDAdapter( Data, convertMonoToStereo16Bit );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	821 }
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	822
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	823 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	824 static void createFormatConverter8Bit(Sound_AudioCVT *Data,
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	825 SDL_AudioSpec src, SDL_AudioSpec dst )
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	826 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	827 if( IS_16BIT(src) )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	828 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	829 if( IS_SYSENDIAN(src) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	830 addHAdapter( Data, cut16BitSysTo8Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	831 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	832 addHAdapter( Data, cut16BitWrongTo8Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	833 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	834
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	835 if( src.channels == 2 && dst.channels == 1 )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	836 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	837 if( IS_SIGNED(src) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	838 addHAdapter( Data, convertStereoToMonoS8Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	839 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	840 addHAdapter( Data, convertStereoToMonoU8Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	841 }
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	842
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	843 if( IS_SIGNED(src) != IS_SIGNED(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	844 addDAdapter( Data, changeSigned8Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	845
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	846 if( src.channels == 1 && dst.channels == 2 )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	847 addDAdapter( Data, convertMonoToStereo8Bit );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	848
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	849 if( !IS_8BIT(dst) )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	850 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	851 if( IS_SYSENDIAN(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	852 addDAdapter( Data, expand8BitTo16BitSys );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	853 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	854 addDAdapter( Data, expand8BitTo16BitWrong );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	855 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	856 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	857
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	858 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	859 static void createFormatConverter(Sound_AudioCVT *Data,
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	860 SDL_AudioSpec src, SDL_AudioSpec dst )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	861 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	862 if( IS_FLOAT(src) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	863 addHAdapter( Data, cutFloatTo16Bit );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	864
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	865 if( IS_8BIT(src) \|\| IS_8BIT(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	866 createFormatConverter8Bit( Data, src, dst);
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	867 else
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	868 createFormatConverter16Bit( Data, src, dst);
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	869
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	870 if( IS_FLOAT(dst) )
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	871 addDAdapter( Data, expand16BitToFloat );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	872 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	873
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	874 /-------------------------------------------------------------------------/
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	875 int Sound_AltBuildAudioCVT( Sound_AudioCVT *Data,
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	876 SDL_AudioSpec src, SDL_AudioSpec dst )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	877 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	878 SDL_AudioSpec im;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	879
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	880 if( Data == NULL ) return -1;
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	881
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	882 initAudioCVT( Data );
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	883 Data->filter.ratio.denominator = 0;
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	884 Data->filter.mask = dst.size - 1;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	885
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	886 /* Check channels */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	887 if( src.channels < 1 \|\| src.channels > 2 \|\|
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	888 dst.channels < 1 \|\| dst.channels > 2 ) goto error_exit;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	889
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	890 if( src.freq != dst.freq )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	891 {
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	892 /* Convert to intermidiate format: signed 16Bit System-Endian */
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	893 im.format = AUDIO_S16SYS;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	894 im.channels = min( src.channels, dst.channels );
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	895 createFormatConverter( Data, src, im );
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	896
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	897 /* Do rate conversion */
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	898 if( createRateConverter( Data, src.freq, dst.freq, im.channels ) )
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	899 goto error_exit;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	900
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	901 src = im;
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	902 }
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	903
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	904 /* Convert to final format */
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	905 createFormatConverter( Data, src, dst );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	906
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	907 /* Finalize adapter list */
5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	908 addAdapter( Data, NULL );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	909 /* !!! FIXME: Is it okay to assign NULL to a function pointer?
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	910 Borland says no. -frank */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	911 return 0;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	912
7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	913 error_exit:
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	914 /* !!! FIXME: Is it okay to assign NULL to a function pointer?
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	915 Borland says no. -frank */
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	916 Data->adapter[0] = NULL;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	917 return -1;
338 7b9a0f3f030e Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	918 }
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	919
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	920 /-------------------------------------------------------------------------/
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	921 static char *fmt_to_str(Uint16 fmt)
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	922 {
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	923 switch (fmt)
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	924 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	925 case AUDIO_U8: return " U8";
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	926 case AUDIO_S8: return " S8";
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	927 case AUDIO_U16MSB: return "U16MSB";
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	928 case AUDIO_S16MSB: return "S16MSB";
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	929 case AUDIO_U16LSB: return "U16LSB";
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	930 case AUDIO_S16LSB: return "S16LSB";
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	931 }
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	932 return "??????";
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	933 }
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	934
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	935 #define AdapterDesc(x) { x, #x }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	936
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	937 static void show_AudioCVT( Sound_AudioCVT *Data )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	938 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	939 int i,j;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	940 const struct{ int (adapter) ( AdapterC, int); Sint8 name; }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	941 AdapterDescription[] = {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	942 AdapterDesc(expand8BitTo16BitSys),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	943 AdapterDesc(expand8BitTo16BitWrong),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	944 AdapterDesc(expand16BitToFloat),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	945 AdapterDesc(swapBytes),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	946 AdapterDesc(cut16BitSysTo8Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	947 AdapterDesc(cut16BitWrongTo8Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	948 AdapterDesc(cutFloatTo16Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	949 AdapterDesc(changeSigned16BitSys),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	950 AdapterDesc(changeSigned16BitWrong),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	951 AdapterDesc(changeSigned8Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	952 AdapterDesc(convertStereoToMonoS16Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	953 AdapterDesc(convertStereoToMonoU16Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	954 AdapterDesc(convertStereoToMonoS8Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	955 AdapterDesc(convertStereoToMonoU8Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	956 AdapterDesc(convertMonoToStereo16Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	957 AdapterDesc(convertMonoToStereo8Bit),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	958 AdapterDesc(minus5dB),
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	959 AdapterDesc(doubleRateMono),
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	960 AdapterDesc(doubleRateStereo),
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	961 AdapterDesc(halfRateMono),
365 f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	962 AdapterDesc(halfRateStereo),
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	963 AdapterDesc(increaseRateMono),
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	964 AdapterDesc(increaseRateStereo),
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	965 AdapterDesc(decreaseRateMono),
f61eadea1f44 More revisions from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 360 diff changeset	966 AdapterDesc(decreaseRateStereo),
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	967 { NULL, "----------NULL-----------\n" }
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	968 };
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	969
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	970 fprintf( stderr, "Sound_AudioCVT:\n" );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	971 fprintf( stderr, " needed: %8d\n", Data->needed );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	972 fprintf( stderr, " add: %8g\n", Data->add );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	973 fprintf( stderr, " len_add: %8d\n", Data->len_add );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	974 fprintf( stderr, " len_ratio: %8g\n", Data->len_ratio );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	975 fprintf( stderr, " len_mult: %8d\n", Data->len_mult );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	976 fprintf( stderr, " filter->mask: %#7x\n", Data->filter.mask );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	977 fprintf( stderr, "\n" );
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	978
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	979 fprintf( stderr, "Adapter List: \n" );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	980 for( i = 0; i < 32; i++ )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	981 {
366 eda146d666d1 More patches from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 365 diff changeset	982 for( j = 0; j < SDL_TABLESIZE(AdapterDescription); j++ )
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	983 {
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	984 if( Data->adapter[i] == AdapterDescription[j].adapter )
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	985 {
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	986 fprintf( stderr, " %s \n", AdapterDescription[j].name );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	987 if( Data->adapter[i] == NULL ) goto sucess_exit;
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	988 goto cont;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	989 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	990 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	991 fprintf( stderr, " Error: unknown adapter\n" );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	992
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	993 cont:
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	994 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	995 fprintf( stderr, " Error: NULL adapter missing\n" );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	996 sucess_exit:
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	997 if( Data->filter.ratio.denominator )
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	998 {
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	999 fprintf( stderr, "Variable Rate Converter:\n"
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1000 " numerator: %3d\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1001 " denominator: %3d\n",
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	1002 Data->filter.ratio.denominator,
44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	1003 Data->filter.ratio.numerator );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1004
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1005 fprintf( stderr, " increment sequence:\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1006 " " );
380 44ed8bdeba74 More fixes from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 373 diff changeset	1007 for( i = 0; i < Data->filter.ratio.denominator; i++ )
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1008 fprintf( stderr, "%1d ", Data->filter.incr[i] );
371 1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1009
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1010 fprintf( stderr, "\n" );
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1011 }
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1012 else
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1013 {
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1014 fprintf( stderr, "No Variable Rate Converter\n" );
1b463ef9bcc2 More work from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 368 diff changeset	1015 }
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1016 }
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1017
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1018
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1019 int Sound_BuildAudioCVT(Sound_AudioCVT *Data,
441 5b00e43ec23c Patches to make SDL_sound more Visual C happy. Ryan C. Gordon <icculus@icculus.org> parents: 421 diff changeset	1020 Uint16 src_format, Uint8 src_channels, Uint32 src_rate,
5b00e43ec23c Patches to make SDL_sound more Visual C happy. Ryan C. Gordon <icculus@icculus.org> parents: 421 diff changeset	1021 Uint16 dst_format, Uint8 dst_channels, Uint32 dst_rate, Uint32 bufsize)
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1022 {
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1023 SDL_AudioSpec src, dst;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1024 int ret;
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1025
fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1026 fprintf (stderr,
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1027 "Sound_BuildAudioCVT():\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1028 "-----------------------------\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1029 "format: %s -> %s\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1030 "channels: %6d -> %6d\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1031 "rate: %6d -> %6d\n"
24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1032 "size: don't care -> %#7x\n\n",
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1033 fmt_to_str (src_format), fmt_to_str (dst_format),
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1034 src_channels, dst_channels,
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	1035 src_rate, dst_rate );
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1036
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1037 src.format = src_format;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1038 src.channels = src_channels;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1039 src.freq = src_rate;
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1040
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1041 dst.format = dst_format;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1042 dst.channels = dst_channels;
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1043 dst.freq = dst_rate;
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1044
420 5b8a07b5162e Latest altcvt from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 403 diff changeset	1045 ret = Sound_AltBuildAudioCVT( Data, src, dst );
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1046 Data->needed = 1;
347 778cee61e1be Mono-to-stereo fixes, more fprintf debugging output. Ryan C. Gordon <icculus@icculus.org> parents: 342 diff changeset	1047
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1048 show_AudioCVT( Data );
c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1049 fprintf (stderr, "\n"
373 24a610dfbbfd More altcvt updates from Frank. Ryan C. Gordon <icculus@icculus.org> parents: 371 diff changeset	1050 "return value: %d \n\n\n", ret );
360 c984aa6990f7 Fixes and enhancements from Frank Ranostaj. Ryan C. Gordon <icculus@icculus.org> parents: 347 diff changeset	1051 return ret;
342 fbbb1f25b944 Cleanups by Torbjï¿½rn. Ryan C. Gordon <icculus@icculus.org> parents: 338 diff changeset	1052 }
465 636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	1053
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	1054 #endif /* SOUND_USE_ALTCVT */
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	1055
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	1056 /* end of alt_audio_convert.c ... */
636796aed4e2 Build/packaging fixes. Ryan C. Gordon <icculus@icculus.org> parents: 441 diff changeset	1057

Mercurial > SDL_sound_CoreAudio

annotate alt_audio_convert.c @ 533:cad2940e992f stable-1.0