sdl-ios-xcode: src/audio/sdlgenaudiocvt.pl annotate

annotate src/audio/sdlgenaudiocvt.pl @ 3008:786a48f8309c

First shot at autogenerated audio resamplers. Don't check in a new SDL_audiotypecvt.c yet, though.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 09 Jan 2009 15:41:45 +0000
parents	1210d5a28e16
children	dfd23eb79be9

rev	line source
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 #!/usr/bin/perl -w
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 use warnings;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 use strict;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 my @audiotypes = qw(
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 U8
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	8 S8
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 U16LSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 S16LSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 U16MSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 S16MSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 S32LSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 S32MSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 F32LSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 F32MSB
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 );
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	19 my @channels = ( 1, 2, 4, 6, 8 );
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 my %funcs;
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	21 my $custom_converters = 0;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	22
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	24 sub getTypeConvertHashId {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	25 my ($from, $to) = @_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	26 return "TYPECONVERTER $from/$to";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	27 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	28
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	29
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	30 sub getResamplerHashId {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	31 my ($from, $channels, $upsample, $multiple) = @_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	32 return "RESAMPLER $from/$channels/$upsample/$multiple";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	33 }
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 sub outputHeader {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37 print <<EOF;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	38 /* DO NOT EDIT! This file is generated by sdlgenaudiocvt.pl */
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 /*
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 SDL - Simple DirectMedia Layer
2859 99210400e8b9 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 2011 diff changeset	41 Copyright (C) 1997-2009 Sam Lantinga
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43 This library is free software; you can redistribute it and/or
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	44 modify it under the terms of the GNU Lesser General Public
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	45 License as published by the Free Software Foundation; either
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	46 version 2.1 of the License, or (at your option) any later version.
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	47
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	48 This library is distributed in the hope that it will be useful,
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	49 but WITHOUT ANY WARRANTY; without even the implied warranty of
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51 Lesser General Public License for more details.
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	53 You should have received a copy of the GNU Lesser General Public
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	54 License along with this library; if not, write to the Free Software
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	55 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	56
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	57 Sam Lantinga
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	58 slouken\@libsdl.org
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	59 */
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	60
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	61 #include "SDL_config.h"
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	62 #include "SDL_audio.h"
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	63 #include "SDL_audio_c.h"
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	65 /* INDENT-OFF */
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	68
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	69 my @vals = ( 127, 32767, 2147483647 );
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	70 foreach (@vals) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71 my $val = $_;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72 my $fval = 1.0 / $val;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	73 print("#define DIVBY${val} ${fval}f\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	74 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	75
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76 print("\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	79 sub outputFooter {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	80 print <<EOF;
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	81 /* $custom_converters converters generated. */
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	82
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	83 /* INDENT-ON */
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	84
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	85 /* vi: set ts=4 sw=4 expandtab: */
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	86 EOF
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	87 }
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	88
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	89 sub splittype {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	90 my $t = shift;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	91 my ($signed, $size, $endian) = $t =~ /([USF])(\d+)([LM]SB\|)/;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	92 my $float = ($signed eq 'F') ? 1 : 0;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	93 $signed = (($float) or ($signed eq 'S')) ? 1 : 0;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	94 $endian = 'NONE' if ($endian eq '');
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	95
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	96 my $ctype = '';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	97 if ($float) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	98 $ctype = (($size == 32) ? 'float' : 'double');
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	99 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	100 $ctype = (($signed) ? 'S' : 'U') . "int${size}";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	101 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	102
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	103 return ($signed, $float, $size, $endian, $ctype);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	104 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	105
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	106 sub getSwapFunc {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	107 my ($size, $signed, $float, $endian, $val) = @_;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	108 my $BEorLE = (($endian eq 'MSB') ? 'BE' : 'LE');
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	109 my $code = '';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	110
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	111 if ($float) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	112 $code = "SDL_SwapFloat${BEorLE}($val)";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	113 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	114 if ($size > 8) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	115 $code = "SDL_Swap${BEorLE}${size}($val)";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	116 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	117 $code = $val;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	118 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	119
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	120 if (($signed) and (!$float)) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	121 $code = "((Sint${size}) $code)";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	122 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	123 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	124
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	125 return "${code}";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	126 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	127
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	128
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	129 sub maxIntVal {
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	130 my $size = shift;
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	131 if ($size == 8) {
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	132 return 0x7F;
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	133 } elsif ($size == 16) {
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	134 return 0x7FFF;
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	135 } elsif ($size == 32) {
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	136 return 0x7FFFFFFF;
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	137 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	139 die("bug in script.\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	140 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	141
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142 sub getFloatToIntMult {
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	143 my $size = shift;
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	144 my $val = maxIntVal($size) . '.0';
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	145 $val .= 'f' if ($size < 32);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	146 return $val;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	147 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	148
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	149 sub getIntToFloatDivBy {
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	150 my $size = shift;
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	151 return 'DIVBY' . maxIntVal($size);
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	152 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	153
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	154 sub getSignFlipVal {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	155 my $size = shift;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	156 if ($size == 8) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	157 return '0x80';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	158 } elsif ($size == 16) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	159 return '0x8000';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	160 } elsif ($size == 32) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	161 return '0x80000000';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	162 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	163
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	164 die("bug in script.\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	165 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	167 sub buildCvtFunc {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	168 my ($from, $to) = @_;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	169 my ($fsigned, $ffloat, $fsize, $fendian, $fctype) = splittype($from);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	170 my ($tsigned, $tfloat, $tsize, $tendian, $tctype) = splittype($to);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	171 my $diffs = 0;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172 $diffs++ if ($fsize != $tsize);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173 $diffs++ if ($fsigned != $tsigned);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	174 $diffs++ if ($ffloat != $tfloat);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	175 $diffs++ if ($fendian ne $tendian);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	176
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	177 return if ($diffs == 0);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	178
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	179 my $hashid = getTypeConvertHashId($from, $to);
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	180 if (1) { # !!! FIXME: if ($diffs > 1) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	181 my $sym = "SDL_Convert_${from}_to_${to}";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	182 $funcs{$hashid} = $sym;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	183 $custom_converters++;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185 # Always unsigned for ints, for possible byteswaps.
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	186 my $srctype = (($ffloat) ? 'float' : "Uint${fsize}");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	187
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	188 print <<EOF;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	189 static void SDLCALL
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	190 ${sym}(SDL_AudioCVT * cvt, SDL_AudioFormat format)
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	191 {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192 int i;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193 const $srctype *src;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194 $tctype *dst;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196 #ifdef DEBUG_CONVERT
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	197 fprintf(stderr, "Converting AUDIO_${from} to AUDIO_${to}.\\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	198 #endif
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	199
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	200 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	201
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	202 if ($fsize < $tsize) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	203 my $mult = $tsize / $fsize;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	204 print <<EOF;
2956 1210d5a28e16 Fixed off-by-one in audio converters, when growing a data type's size. Ryan C. Gordon <icculus@icculus.org> parents: 2955 diff changeset	205 src = ((const $srctype *) (cvt->buf + cvt->len_cvt)) - 1;
1210d5a28e16 Fixed off-by-one in audio converters, when growing a data type's size. Ryan C. Gordon <icculus@icculus.org> parents: 2955 diff changeset	206 dst = (($tctype ) (cvt->buf + cvt->len_cvt $mult)) - 1;
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	207 for (i = cvt->len_cvt / sizeof ($srctype); i; --i, --src, --dst) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	208 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	209 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	210 print <<EOF;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	211 src = (const $srctype *) cvt->buf;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	212 dst = ($tctype *) cvt->buf;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	213 for (i = cvt->len_cvt / sizeof ($srctype); i; --i, ++src, ++dst) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	214 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	215 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	216
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	217 # Have to convert to/from float/int.
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	218 # !!! FIXME: cast through double for int32<->float?
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	219 my $code = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, '*src');
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	220 if ($ffloat != $tfloat) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	221 if ($ffloat) {
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	222 my $mult = getFloatToIntMult($tsize);
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	223 if (!$tsigned) { # bump from -1.0f/1.0f to 0.0f/2.0f
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	224 $code = "($code + 1.0f)";
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	225 }
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	226 $code = "(($tctype) ($code * $mult))";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	227 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	228 # $divby will be the reciprocal, to avoid pipeline stalls
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	229 # from floating point division...so multiply it.
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	230 my $divby = getIntToFloatDivBy($fsize);
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	231 $code = "(((float) $code) * $divby)";
2011 b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	232 if (!$fsigned) { # bump from 0.0f/2.0f to -1.0f/1.0f.
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	233 $code = "($code - 1.0f)";
b2b7154ce016 Fixed broken audio conversions between float and unsigned datatypes. Ryan C. Gordon <icculus@icculus.org> parents: 1985 diff changeset	234 }
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	235 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	236 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	237 # All integer conversions here.
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	238 if ($fsigned != $tsigned) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	239 my $signflipval = getSignFlipVal($fsize);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	240 $code = "(($code) ^ $signflipval)";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	241 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	242
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	243 my $shiftval = abs($fsize - $tsize);
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	244 if ($fsize < $tsize) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	245 $code = "((($tctype) $code) << $shiftval)";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	246 } elsif ($fsize > $tsize) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	247 $code = "(($tctype) ($code >> $shiftval))";
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	248 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	249 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	250
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	251 my $swap = getSwapFunc($tsize, $tsigned, $tfloat, $tendian, 'val');
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	252
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	253 print <<EOF;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	254 const $tctype val = $code;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	255 *dst = ${swap};
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	256 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	257
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	258 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	259
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	260 if ($fsize > $tsize) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	261 my $divby = $fsize / $tsize;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	262 print(" cvt->len_cvt /= $divby;\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	263 } elsif ($fsize < $tsize) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	264 my $mult = $tsize / $fsize;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	265 print(" cvt->len_cvt *= $mult;\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	266 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	267
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	268 print <<EOF;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	269 if (cvt->filters[++cvt->filter_index]) {
2955 2692999d5271 Avoid unnecessary assignment in generated audio type converters. Ryan C. Gordon <icculus@icculus.org> parents: 2859 diff changeset	270 cvt->filters[cvt->filter_index] (cvt, AUDIO_$to);
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	271 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	272 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	273
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	274 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	275
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	276 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	277 if ($fsigned != $tsigned) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	278 $funcs{$hashid} = 'SDL_ConvertSigned';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	279 } elsif ($ffloat != $tfloat) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	280 $funcs{$hashid} = 'SDL_ConvertFloat';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	281 } elsif ($fsize != $tsize) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	282 $funcs{$hashid} = 'SDL_ConvertSize';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	283 } elsif ($fendian ne $tendian) {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	284 $funcs{$hashid} = 'SDL_ConvertEndian';
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	285 } else {
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	286 die("error in script.\n");
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	287 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	288 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	289 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	290
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	291
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	292 sub buildTypeConverters {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	293 foreach (@audiotypes) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	294 my $from = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	295 foreach (@audiotypes) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	296 my $to = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	297 buildCvtFunc($from, $to);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	298 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	299 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	300
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	301 print "const SDL_AudioTypeFilters sdl_audio_type_filters[] =\n{\n";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	302 foreach (@audiotypes) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	303 my $from = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	304 foreach (@audiotypes) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	305 my $to = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	306 if ($from ne $to) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	307 my $hashid = getTypeConvertHashId($from, $to);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	308 my $sym = $funcs{$hashid};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	309 print(" { AUDIO_$from, AUDIO_$to, $sym },\n");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	310 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	311 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	312 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	313
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	314 print "};\n\n\n";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	315 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	316
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	317 sub getBiggerCtype {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	318 my ($isfloat, $size) = @_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	319
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	320 if ($isfloat) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	321 if ($size == 32) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	322 return 'double';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	323 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	324 die("bug in script.\n");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	325 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	326
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	327 if ($size == 8) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	328 return 'Sint16';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	329 } elsif ($size == 16) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	330 return 'Sint32'
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	331 } elsif ($size == 32) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	332 return 'Sint64'
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	333 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	334
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	335 die("bug in script.\n");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	336 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	337
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	338
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	339 # These handle arbitrary resamples...44100Hz to 48000Hz, for example.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	340 # Man, this code is skanky.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	341 sub buildArbitraryResampleFunc {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	342 # !!! FIXME: we do a lot of unnecessary and ugly casting in here, due to getSwapFunc().
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	343 my ($from, $channels, $upsample) = @_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	344 my ($fsigned, $ffloat, $fsize, $fendian, $fctype) = splittype($from);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	345
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	346 my $bigger = getBiggerCtype($ffloat, $fsize);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	347 my $interp = ($ffloat) ? '* 0.5' : '>> 1';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	348
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	349 my $resample = ($upsample) ? 'Upsample' : 'Downsample';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	350 my $hashid = getResamplerHashId($from, $channels, $upsample, 0);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	351 my $sym = "SDL_${resample}_${from}_${channels}c";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	352 $funcs{$hashid} = $sym;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	353 $custom_converters++;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	354
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	355 my $fudge = $fsize * $channels * 2; # !!! FIXME
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	356 my $eps_adjust = ($upsample) ? 'dstsize' : 'srcsize';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	357 my $incr = '';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	358 my $incr2 = '';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	359
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	360
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	361 # !!! FIXME: DEBUG_CONVERT should report frequencies.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	362 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	363 static void SDLCALL
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	364 ${sym}(SDL_AudioCVT * cvt, SDL_AudioFormat format)
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	365 {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	366 #ifdef DEBUG_CONVERT
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	367 fprintf(stderr, "$resample arbitrary (x%f) AUDIO_${from}, ${channels} channels.\\n", cvt->rate_incr);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	368 #endif
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	369
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	370 const int srcsize = cvt->len_cvt - $fudge;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	371 const int dstsize = (int) (((double)cvt->len_cvt) * cvt->rate_incr);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	372 register int eps = 0;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	373 EOF
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	374
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	375 # Upsampling (growing the buffer) needs to work backwards, since we
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	376 # overwrite the buffer as we go.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	377 if ($upsample) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	378 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	379 $fctype dst = (($fctype ) (cvt->buf + dstsize)) - $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	380 const $fctype src = (($fctype ) (cvt->buf + cvt->len_cvt)) - $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	381 const $fctype target = ((const $fctype ) cvt->buf) - $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	382 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	383 } else {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	384 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	385 $fctype dst = ($fctype ) cvt->buf;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	386 const $fctype src = ($fctype ) cvt->buf;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	387 const $fctype target = (const $fctype ) (cvt->buf + dstsize);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	388 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	389 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	390
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	391 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	392 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	393 my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	394 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	395 $fctype sample${idx} = $val;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	396 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	397 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	398
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	399 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	400 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	401 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	402 $fctype last_sample${idx} = sample${idx};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	403 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	404 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	405
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	406 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	407 while (dst != target) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	408 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	409
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	410 if ($upsample) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	411 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	412 # !!! FIXME: don't do this swap every write, just when the samples change.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	413 my $idx = (($channels - $i) - 1);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	414 my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "sample${idx}");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	415 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	416 dst[$idx] = $val;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	417 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	418 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	419
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	420 $incr = ($channels == 1) ? 'dst--' : "dst -= $channels";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	421 $incr2 = ($channels == 1) ? 'src--' : "src -= $channels";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	422
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	423 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	424 $incr;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	425 eps += srcsize;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	426 if ((eps << 1) >= dstsize) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	427 $incr2;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	428 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	429 } else { # downsample.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	430 $incr = ($channels == 1) ? 'src++' : "src += $channels";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	431 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	432 $incr;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	433 eps += dstsize;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	434 if ((eps << 1) >= srcsize) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	435 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	436 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	437 my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "sample${i}");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	438 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	439 dst[$i] = $val;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	440 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	441 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	442
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	443 $incr = ($channels == 1) ? 'dst++' : "dst += $channels";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	444 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	445 $incr;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	446 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	447 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	448
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	449 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	450 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	451 my $swapped = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	452 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	453 sample${idx} = ($fctype) (((($bigger) $swapped) + (($bigger) last_sample${idx})) $interp);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	454 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	455 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	456
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	457 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	458 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	459 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	460 last_sample${idx} = sample${idx};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	461 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	462 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	463
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	464 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	465 eps -= $eps_adjust;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	466 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	467 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	468 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	469
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	470 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	471 cvt->len_cvt = dstsize;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	472 if (cvt->filters[++cvt->filter_index]) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	473 cvt->filters[cvt->filter_index] (cvt, format);
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	474 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	475 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	476
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	477 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	478
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	479 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	480
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	481 # These handle clean resamples...doubling and quadrupling the sample rate, etc.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	482 sub buildMultipleResampleFunc {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	483 # !!! FIXME: we do a lot of unnecessary and ugly casting in here, due to getSwapFunc().
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	484 my ($from, $channels, $upsample, $multiple) = @_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	485 my ($fsigned, $ffloat, $fsize, $fendian, $fctype) = splittype($from);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	486
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	487 my $bigger = getBiggerCtype($ffloat, $fsize);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	488 my $interp = ($ffloat) ? '* 0.5' : '>> 1';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	489 my $interp2 = ($ffloat) ? '* 0.25' : '>> 2';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	490 my $mult3 = ($ffloat) ? '3.0' : '3';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	491 my $lencvtop = ($upsample) ? '*' : '/';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	492
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	493 my $resample = ($upsample) ? 'Upsample' : 'Downsample';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	494 my $hashid = getResamplerHashId($from, $channels, $upsample, $multiple);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	495 my $sym = "SDL_${resample}_${from}_${channels}c_x${multiple}";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	496 $funcs{$hashid} = $sym;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	497 $custom_converters++;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	498
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	499 # !!! FIXME: DEBUG_CONVERT should report frequencies.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	500 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	501 static void SDLCALL
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	502 ${sym}(SDL_AudioCVT * cvt, SDL_AudioFormat format)
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	503 {
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	504 #ifdef DEBUG_CONVERT
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	505 fprintf(stderr, "$resample (x${multiple}) AUDIO_${from}, ${channels} channels.\\n");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	506 #endif
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	507
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	508 const int srcsize = cvt->len_cvt;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	509 const int dstsize = cvt->len_cvt $lencvtop $multiple;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	510 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	511
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	512 # Upsampling (growing the buffer) needs to work backwards, since we
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	513 # overwrite the buffer as we go.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	514 if ($upsample) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	515 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	516 $fctype dst = (($fctype ) (cvt->buf + dstsize)) - $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	517 const $fctype src = (($fctype ) (cvt->buf + cvt->len_cvt)) - $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	518 const $fctype target = ((const $fctype ) cvt->buf) - $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	519 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	520 } else {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	521 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	522 $fctype dst = ($fctype ) cvt->buf;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	523 const $fctype src = ($fctype ) cvt->buf;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	524 const $fctype target = (const $fctype ) (cvt->buf + dstsize);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	525 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	526 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	527
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	528 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	529 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	530 my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	531 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	532 $bigger last_sample${idx} = ($bigger) $val;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	533 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	534 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	535
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	536 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	537 while (dst != target) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	538 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	539
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	540 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	541 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	542 my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	543 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	544 const $bigger sample${idx} = ($bigger) $val;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	545 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	546 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	547
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	548 my $incr = '';
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	549 if ($upsample) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	550 $incr = ($channels == 1) ? 'src--' : "src -= $channels";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	551 } else {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	552 my $amount = $channels * $multiple;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	553 $incr = "src += $amount"; # can't ever be 1, so no "++" version.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	554 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	555
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	556
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	557 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	558 $incr;
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	559 EOF
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	560
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	561 # !!! FIXME: This really begs for some Altivec or SSE, etc.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	562 if ($upsample) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	563 if ($multiple == 2) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	564 for (my $i = $channels-1; $i >= 0; $i--) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	565 my $dsti = $i + $channels;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	566 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	567 dst[$dsti] = ($fctype) ((sample${i} + last_sample${i}) $interp);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	568 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	569 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	570 for (my $i = $channels-1; $i >= 0; $i--) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	571 my $dsti = $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	572 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	573 dst[$dsti] = ($fctype) sample${i};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	574 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	575 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	576 } elsif ($multiple == 4) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	577 for (my $i = $channels-1; $i >= 0; $i--) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	578 my $dsti = $i + ($channels * 3);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	579 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	580 dst[$dsti] = ($fctype) sample${i};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	581 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	582 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	583
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	584 for (my $i = $channels-1; $i >= 0; $i--) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	585 my $dsti = $i + ($channels * 2);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	586 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	587 dst[$dsti] = ($fctype) ((($mult3 * sample${i}) + last_sample${i}) $interp2);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	588 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	589 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	590
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	591 for (my $i = $channels-1; $i >= 0; $i--) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	592 my $dsti = $i + ($channels * 1);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	593 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	594 dst[$dsti] = ($fctype) ((sample${i} + last_sample${i}) $interp);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	595 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	596 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	597
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	598 for (my $i = $channels-1; $i >= 0; $i--) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	599 my $dsti = $i + ($channels * 0);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	600 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	601 dst[$dsti] = ($fctype) ((sample${i} + ($mult3 * last_sample${i})) $interp2);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	602 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	603 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	604 } else {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	605 die('bug in program.'); # we only handle x2 and x4.
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	606 }
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	607 } else { # downsample.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	608 if ($multiple == 2) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	609 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	610 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	611 dst[$i] = ($fctype) ((sample${i} + last_sample${i}) $interp);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	612 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	613 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	614 } elsif ($multiple == 4) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	615 # !!! FIXME: interpolate all 4 samples?
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	616 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	617 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	618 dst[$i] = ($fctype) ((sample${i} + last_sample${i}) $interp);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	619 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	620 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	621 } else {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	622 die('bug in program.'); # we only handle x2 and x4.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	623 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	624 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	625
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	626 for (my $i = 0; $i < $channels; $i++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	627 my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	628 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	629 last_sample${idx} = sample${idx};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	630 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	631 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	632
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	633 if ($upsample) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	634 my $amount = $channels * $multiple;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	635 $incr = "dst -= $amount"; # can't ever be 1, so no "--" version.
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	636 } else {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	637 $incr = ($channels == 1) ? 'dst++' : "dst += $channels";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	638 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	639
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	640 print <<EOF;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	641 $incr;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	642 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	643
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	644 cvt->len_cvt = dstsize;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	645 if (cvt->filters[++cvt->filter_index]) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	646 cvt->filters[cvt->filter_index] (cvt, format);
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	647 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	648 }
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	649
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	650 EOF
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	651
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	652 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	653
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	654 sub buildResamplers {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	655 foreach (@audiotypes) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	656 my $from = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	657 foreach (@channels) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	658 my $channel = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	659 for (my $multiple = 2; $multiple <= 4; $multiple += 2) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	660 buildMultipleResampleFunc($from, $channel, 1, $multiple);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	661 buildMultipleResampleFunc($from, $channel, 0, $multiple);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	662 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	663 buildArbitraryResampleFunc($from, $channel, 1);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	664 buildArbitraryResampleFunc($from, $channel, 0);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	665 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	666 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	667
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	668 print "const SDL_AudioRateFilters sdl_audio_rate_filters[] =\n{\n";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	669 foreach (@audiotypes) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	670 my $from = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	671 foreach (@channels) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	672 my $channel = $_;
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	673 for (my $multiple = 0; $multiple <= 4; $multiple += 2) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	674 for (my $upsample = 0; $upsample <= 1; $upsample++) {
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	675 my $hashid = getResamplerHashId($from, $channel, $upsample, $multiple);
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	676 my $sym = $funcs{$hashid};
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	677 print(" { AUDIO_$from, $channel, $upsample, $multiple, $sym },\n");
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	678 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	679 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	680 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	681 }
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	682
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	683 print "};\n\n";
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	684 }
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	685
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	686
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	687 # mainline ...
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	688
3008 786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	689 outputHeader();
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	690 buildTypeConverters();
786a48f8309c First shot at autogenerated audio resamplers. Ryan C. Gordon <icculus@icculus.org> parents: 2956 diff changeset	691 buildResamplers();
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	692 outputFooter();
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	693
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	694 exit 0;
3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	695
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1982 diff changeset	696 # end of sdlgenaudiocvt.pl ...
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	697

Mercurial > sdl-ios-xcode

annotate src/audio/sdlgenaudiocvt.pl @ 3008:786a48f8309c