SDL_sound_CoreAudio: decoders/flac.c annotate

annotate decoders/flac.c @ 552:2e8907ff98e9

Replaced references to COPYING with references to LICENSE.txt ...

author	Ryan C. Gordon <icculus@icculus.org>
date	Tue, 09 Sep 2008 16:28:11 -0400
parents	8a814bbbedfa
children

rev	line source
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /*
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	21 * FLAC decoder for SDL_sound.
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 *
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23 * This driver handles FLAC audio, that is to say the Free Lossless Audio
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	24 * Codec. It depends on libFLAC for decoding, which can be grabbed from:
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 * http://flac.sourceforge.net
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	26 *
552 2e8907ff98e9 Replaced references to COPYING with references to LICENSE.txt ... Ryan C. Gordon <icculus@icculus.org> parents: 536 diff changeset	27 * Please see the file LICENSE.txt in the source's root directory.
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	28 *
536 8a814bbbedfa Merged r544:545 from branches/stable-1.0: converted to UTF-8 encoding. Ryan C. Gordon <icculus@icculus.org> parents: 516 diff changeset	29 * This file written by Torbjörn Andersson. (d91tan@Update.UU.SE)
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	30 */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	31
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	32 #if HAVE_CONFIG_H
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 # include <config.h>
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34 #endif
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 #ifdef SOUND_SUPPORTS_FLAC
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 #include <stdio.h>
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 #include <stdlib.h>
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 #include <string.h>
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	41
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42 #include "SDL_sound.h"
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	44 #define __SDL_SOUND_INTERNAL__
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	45 #include "SDL_sound_internal.h"
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	46
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	47 #include <FLAC/export.h>
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	48
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	49 /* FLAC 1.1.3 has FLAC_API_VERSION_CURRENT == 8 */
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	50 #if !defined(FLAC_API_VERSION_CURRENT) \|\| FLAC_API_VERSION_CURRENT < 8
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	51 #define LEGACY_FLAC
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	52 #else
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	53 #undef LEGACY_FLAC
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	54 #endif
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	55
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	56 #ifdef LEGACY_FLAC
443 30f96c853462 MacOS X build fixes. Ryan C. Gordon <icculus@icculus.org> parents: 422 diff changeset	57 #include <FLAC/seekable_stream_decoder.h>
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	58
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	59 #define D_END_OF_STREAM FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	60
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	61 #define d_new() FLAC__seekable_stream_decoder_new()
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	62 #define d_init(x) FLAC__seekable_stream_decoder_init(x)
422 5b06e23d934e Removed backwards compatible API nastiness from FLAC decoder. Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	63 #define d_process_metadata(x) FLAC__seekable_stream_decoder_process_until_end_of_metadata(x)
5b06e23d934e Removed backwards compatible API nastiness from FLAC decoder. Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	64 #define d_process_one_frame(x) FLAC__seekable_stream_decoder_process_single(x)
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	65 #define d_get_state(x) FLAC__seekable_stream_decoder_get_state(x)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	66 #define d_finish(x) FLAC__seekable_stream_decoder_finish(x)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	67 #define d_delete(x) FLAC__seekable_stream_decoder_delete(x)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	68 #define d_set_read_callback(x, y) FLAC__seekable_stream_decoder_set_read_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	69 #define d_set_write_callback(x, y) FLAC__seekable_stream_decoder_set_write_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	70 #define d_set_metadata_callback(x, y) FLAC__seekable_stream_decoder_set_metadata_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	71 #define d_set_error_callback(x, y) FLAC__seekable_stream_decoder_set_error_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	72 #define d_set_client_data(x, y) FLAC__seekable_stream_decoder_set_client_data(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	73
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	74 typedef FLAC__SeekableStreamDecoder decoder_t;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	75 typedef FLAC__SeekableStreamDecoderReadStatus d_read_status_t;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	76
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	77 #define D_SEEK_STATUS_OK FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	78 #define D_SEEK_STATUS_ERROR FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	79 #define D_TELL_STATUS_OK FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	80 #define D_TELL_STATUS_ERROR FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	81 #define D_LENGTH_STATUS_OK FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	82 #define D_LENGTH_STATUS_ERROR FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	83
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	84 #define d_set_seek_callback(x, y) FLAC__seekable_stream_decoder_set_seek_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	85 #define d_set_tell_callback(x, y) FLAC__seekable_stream_decoder_set_tell_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	86 #define d_set_length_callback(x, y) FLAC__seekable_stream_decoder_set_length_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	87 #define d_set_eof_callback(x, y) FLAC__seekable_stream_decoder_set_eof_callback(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	88 #define d_seek_absolute(x, y) FLAC__seekable_stream_decoder_seek_absolute(x, y)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	89
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	90 typedef FLAC__SeekableStreamDecoderSeekStatus d_seek_status_t;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	91 typedef FLAC__SeekableStreamDecoderTellStatus d_tell_status_t;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	92 typedef FLAC__SeekableStreamDecoderLengthStatus d_length_status_t;
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	93 #else
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	94 #include <FLAC/stream_decoder.h>
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	95
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	96 #define D_END_OF_STREAM FLAC__STREAM_DECODER_END_OF_STREAM
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	97
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	98 #define d_new() FLAC__stream_decoder_new()
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	99 #define d_process_metadata(x) FLAC__stream_decoder_process_until_end_of_metadata(x)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	100 #define d_process_one_frame(x) FLAC__stream_decoder_process_single(x)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	101 #define d_get_state(x) FLAC__stream_decoder_get_state(x)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	102 #define d_finish(x) FLAC__stream_decoder_finish(x)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	103 #define d_delete(x) FLAC__stream_decoder_delete(x)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	104
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	105 typedef FLAC__StreamDecoder decoder_t;
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	106 typedef FLAC__StreamDecoderReadStatus d_read_status_t;
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	107
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	108 #define D_SEEK_STATUS_OK FLAC__STREAM_DECODER_SEEK_STATUS_OK
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	109 #define D_SEEK_STATUS_ERROR FLAC__STREAM_DECODER_SEEK_STATUS_ERROR
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	110 #define D_TELL_STATUS_OK FLAC__STREAM_DECODER_TELL_STATUS_OK
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	111 #define D_TELL_STATUS_ERROR FLAC__STREAM_DECODER_TELL_STATUS_ERROR
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	112 #define D_LENGTH_STATUS_OK FLAC__STREAM_DECODER_LENGTH_STATUS_OK
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	113 #define D_LENGTH_STATUS_ERROR FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	114
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	115 #define d_seek_absolute(x, y) FLAC__stream_decoder_seek_absolute(x, y)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	116
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	117 typedef FLAC__StreamDecoderSeekStatus d_seek_status_t;
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	118 typedef FLAC__StreamDecoderTellStatus d_tell_status_t;
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	119 typedef FLAC__StreamDecoderLengthStatus d_length_status_t;
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	120 #endif
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	121
393 b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	122 #define D_WRITE_CONTINUE FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	123 #define D_READ_END_OF_STREAM FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	124 #define D_READ_ABORT FLAC__STREAM_DECODER_READ_STATUS_ABORT
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	125 #define D_READ_CONTINUE FLAC__STREAM_DECODER_READ_STATUS_CONTINUE
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	126
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	127 #define d_error_status_string FLAC__StreamDecoderErrorStatusString
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	128
393 b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	129 typedef FLAC__StreamDecoderErrorStatus d_error_status_t;
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	130 typedef FLAC__StreamMetadata d_metadata_t;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	131 typedef FLAC__StreamDecoderWriteStatus d_write_status_t;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	132
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	133
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	134 static int FLAC_init(void);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	135 static void FLAC_quit(void);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	136 static int FLAC_open(Sound_Sample sample, const char ext);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	137 static void FLAC_close(Sound_Sample *sample);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138 static Uint32 FLAC_read(Sound_Sample *sample);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	139 static int FLAC_rewind(Sound_Sample *sample);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	140 static int FLAC_seek(Sound_Sample *sample, Uint32 ms);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	141
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142 static const char *extensions_flac[] = { "FLAC", "FLA", NULL };
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	143
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	144 const Sound_DecoderFunctions __Sound_DecoderFunctions_FLAC =
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	145 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	146 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	147 extensions_flac,
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	148 "Free Lossless Audio Codec",
536 8a814bbbedfa Merged r544:545 from branches/stable-1.0: converted to UTF-8 encoding. Ryan C. Gordon <icculus@icculus.org> parents: 516 diff changeset	149 "Torbjörn Andersson <d91tan@Update.UU.SE>",
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	150 "http://flac.sourceforge.net/"
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	151 },
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	152
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	153 FLAC_init, /* init() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	154 FLAC_quit, /* quit() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	155 FLAC_open, /* open() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	156 FLAC_close, /* close() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	157 FLAC_read, /* read() method */
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	158 FLAC_rewind, /* rewind() method */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	159 FLAC_seek /* seek() method */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	160 };
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	161
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	162 /* This is what we store in our internal->decoder_private field. */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	163 typedef struct
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	164 {
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	165 decoder_t *decoder;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166 SDL_RWops *rw;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	167 Sound_Sample *sample;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	168 Uint32 frame_size;
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	169 Uint8 is_flac;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	170 Uint32 stream_length;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	171 } flac_t;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	174 static void free_flac(flac_t *f)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	175 {
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	176 d_finish(f->decoder);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	177 d_delete(f->decoder);
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	178 free(f);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	179 } /* free_flac */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	180
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	181
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	182 #ifdef LEGACY_FLAC
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	183 static d_read_status_t read_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	184 const decoder_t *decoder, FLAC__byte buffer[],
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185 unsigned int bytes, void client_data)
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	186 #else
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	187 static d_read_status_t read_callback(
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	188 const decoder_t *decoder, FLAC__byte buffer[],
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	189 size_t bytes, void client_data)
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	190 #endif
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	191 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192 flac_t f = (flac_t ) client_data;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193 Uint32 retval;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195 retval = SDL_RWread(f->rw, (Uint8 ) buffer, 1, bytes);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	197 if (retval == 0)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	198 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	199 *bytes = 0;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	200 f->sample->flags \|= SOUND_SAMPLEFLAG_EOF;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	201 return(D_READ_END_OF_STREAM);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	202 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	203
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	204 if (retval == -1)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	205 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	206 *bytes = 0;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	207 f->sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	208 return(D_READ_ABORT);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	209 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	210
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	211 if (retval < *bytes)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	212 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	213 *bytes = retval;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	214 f->sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	215 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	216
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	217 return(D_READ_CONTINUE);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	218 } /* read_callback */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	219
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	220
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	221 static d_write_status_t write_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	222 const decoder_t decoder, const FLAC__Frame frame,
393 b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	223 const FLAC__int32 * const buffer[],
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	224 void *client_data)
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	225 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	226 flac_t f = (flac_t ) client_data;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	227 Uint32 i, j;
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	228 Uint32 sample;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	229 Uint8 *dst;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	230
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	231 f->frame_size = frame->header.channels * frame->header.blocksize
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	232 * frame->header.bits_per_sample / 8;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	233
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	234 if (f->frame_size > f->sample->buffer_size)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	235 Sound_SetBufferSize(f->sample, f->frame_size);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	236
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	237 dst = f->sample->buffer;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	238
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	239 /* If the sample is neither exactly 8-bit nor 16-bit, it will have to
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	240 * be converted. Unfortunately the buffer is read-only, so we either
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	241 * have to check for each sample, or make a copy of the buffer. I'm
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	242 * not sure which way is best, so I've arbitrarily picked the former.
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	243 */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	244 if (f->sample->actual.format == AUDIO_S8)
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	245 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	246 for (i = 0; i < frame->header.blocksize; i++)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	247 for (j = 0; j < frame->header.channels; j++)
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	248 {
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	249 sample = buffer[j][i];
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	250 if (frame->header.bits_per_sample < 8)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	251 sample <<= (8 - frame->header.bits_per_sample);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	252 *dst++ = sample & 0x00ff;
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	253 } /* for */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	254 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	255 else
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	256 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	257 for (i = 0; i < frame->header.blocksize; i++)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	258 for (j = 0; j < frame->header.channels; j++)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	259 {
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	260 sample = buffer[j][i];
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	261 if (frame->header.bits_per_sample < 16)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	262 sample <<= (16 - frame->header.bits_per_sample);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	263 else if (frame->header.bits_per_sample > 16)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	264 sample >>= (frame->header.bits_per_sample - 16);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	265 *dst++ = (sample & 0xff00) >> 8;
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	266 *dst++ = sample & 0x00ff;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	267 } /* for */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	268 } /* else */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	269
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	270 return(D_WRITE_CONTINUE);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	271 } /* write_callback */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	272
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	273
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	274 static void metadata_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	275 const decoder_t *decoder,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	276 const d_metadata_t *metadata,
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	277 void *client_data)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	278 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	279 flac_t f = (flac_t ) client_data;
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	280 Sound_Sample *sample = f->sample;
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	281 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	282
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	283 SNDDBG(("FLAC: Metadata callback.\n"));
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	284
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	285 /* There are several kinds of metadata, but STREAMINFO is the only
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	286 * one that always has to be there.
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	287 */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	288 if (metadata->type == FLAC__METADATA_TYPE_STREAMINFO)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	289 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	290 SNDDBG(("FLAC: Metadata is streaminfo.\n"));
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	291
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	292 f->is_flac = 1;
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	293 sample->actual.channels = metadata->data.stream_info.channels;
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	294 sample->actual.rate = metadata->data.stream_info.sample_rate;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	295
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	296 if (metadata->data.stream_info.sample_rate == 0 \|\|
474 c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 443 diff changeset	297 metadata->data.stream_info.total_samples == 0)
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	298 {
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	299 internal->total_time = -1;
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	300 } /* if */
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	301 else
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	302 {
3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	303 internal->total_time = (metadata->data.stream_info.total_samples)
474 c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 443 diff changeset	304 / metadata->data.stream_info.sample_rate * 1000;
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	305 internal->total_time += (metadata->data.stream_info.total_samples
474 c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 443 diff changeset	306 % metadata->data.stream_info.sample_rate) * 1000
c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 443 diff changeset	307 / metadata->data.stream_info.sample_rate;
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	308 } /* else */
474 c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 443 diff changeset	309
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	310 if (metadata->data.stream_info.bits_per_sample > 8)
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	311 sample->actual.format = AUDIO_S16MSB;
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	312 else
477 3e705c9180e5 Fixed binary compatibility, added Sound_GetDuration(). Ryan C. Gordon <icculus@icculus.org> parents: 474 diff changeset	313 sample->actual.format = AUDIO_S8;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	314 } /* if */
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	315 } /* metadata_callback */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	316
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	317
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	318 static void error_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	319 const decoder_t *decoder,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	320 d_error_status_t status,
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	321 void *client_data)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	322 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	323 flac_t f = (flac_t ) client_data;
164 77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust Ryan C. Gordon <icculus@icculus.org> parents: 155 diff changeset	324
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	325 __Sound_SetError(d_error_status_string[status]);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	326 f->sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	327 } /* error_callback */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	328
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	329
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	330 static d_seek_status_t seek_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	331 const decoder_t *decoder,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	332 FLAC__uint64 absolute_byte_offset,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	333 void *client_data)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	334 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	335 flac_t f = (flac_t ) client_data;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	336
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	337 if (SDL_RWseek(f->rw, absolute_byte_offset, SEEK_SET) >= 0)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	338 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	339 return(D_SEEK_STATUS_OK);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	340 } /* if */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	341
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	342 return(D_SEEK_STATUS_ERROR);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	343 } /* seek_callback*/
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	344
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	345
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	346 static d_tell_status_t tell_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	347 const decoder_t *decoder,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	348 FLAC__uint64 *absolute_byte_offset,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	349 void *client_data)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	350 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	351 flac_t f = (flac_t ) client_data;
400 9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	352 int pos;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	353
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	354 pos = SDL_RWtell(f->rw);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	355
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	356 if (pos < 0)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	357 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	358 return(D_TELL_STATUS_ERROR);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	359 } /* if */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	360
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	361 *absolute_byte_offset = pos;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	362 return(D_TELL_STATUS_OK);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	363 } /* tell_callback */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	364
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	365
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	366 static d_length_status_t length_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	367 const decoder_t *decoder,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	368 FLAC__uint64 *stream_length,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	369 void *client_data)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	370 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	371 flac_t f = (flac_t ) client_data;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	372
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	373 if (f->sample->flags & SOUND_SAMPLEFLAG_CANSEEK)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	374 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	375 *stream_length = f->stream_length;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	376 return(D_LENGTH_STATUS_OK);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	377 } /* if */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	378
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	379 return(D_LENGTH_STATUS_ERROR);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	380 } /* length_callback */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	381
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	382
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	383 static FLAC__bool eof_callback(
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	384 const decoder_t *decoder,
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	385 void *client_data)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	386 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	387 flac_t f = (flac_t ) client_data;
400 9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	388 int pos;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	389
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	390 /* Maybe we could check for SOUND_SAMPLEFLAG_EOF here instead? */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	391 pos = SDL_RWtell(f->rw);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	392
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	393 if (pos >= 0 && pos >= f->stream_length)
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	394 {
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	395 return(true);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	396 } /* if */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	397
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	398 return(false);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	399 } /* eof_callback */
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	400
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	401
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	402 static int FLAC_init(void)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	403 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	404 return(1); /* always succeeds. */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	405 } /* FLAC_init */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	406
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	407
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	408 static void FLAC_quit(void)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	409 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	410 /* it's a no-op. */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	411 } /* FLAC_quit */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	412
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	413
182 3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	414 #define FLAC_MAGIC 0x43614C66 /* "fLaC" in ASCII. */
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	415
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	416 static int FLAC_open(Sound_Sample sample, const char ext)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	417 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	418 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	419 SDL_RWops *rw = internal->rw;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	420 decoder_t *decoder;
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	421 flac_t *f;
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	422 int i;
182 3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	423 int has_extension = 0;
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	424 Uint32 pos;
182 3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	425
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	426 /*
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	427 * If the extension is "flac", we'll believe that this is really meant
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	428 * to be a FLAC stream, and will try to grok it from existing metadata.
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	429 * metadata searching can be a very expensive operation, however, so
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	430 * unless the user swears that it is a FLAC stream through the extension,
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	431 * we decide what to do based on the existance of a 32-bit magic number.
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	432 */
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	433 for (i = 0; extensions_flac[i] != NULL; i++)
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	434 {
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	435 if (__Sound_strcasecmp(ext, extensions_flac[i]) == 0)
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	436 {
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	437 has_extension = 1;
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	438 break;
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	439 } /* if */
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	440 } /* for */
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	441
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	442 if (!has_extension)
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	443 {
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	444 int rc;
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	445 Uint32 flac_magic = SDL_ReadLE32(rw);
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	446 BAIL_IF_MACRO(flac_magic != FLAC_MAGIC, "FLAC: Not a FLAC stream.", 0);
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	447
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	448 /* move back over magic number for metadata scan... */
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	449 rc = SDL_RWseek(internal->rw, -sizeof (flac_magic), SEEK_CUR);
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	450 BAIL_IF_MACRO(rc < 0, ERR_IO_ERROR, 0);
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	451 } /* if */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	452
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	453 f = (flac_t *) malloc(sizeof (flac_t));
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	454 BAIL_IF_MACRO(f == NULL, ERR_OUT_OF_MEMORY, 0);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	455
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	456 decoder = d_new();
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	457 if (decoder == NULL)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	458 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	459 free(f);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	460 BAIL_MACRO(ERR_OUT_OF_MEMORY, 0);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	461 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	462
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	463 #ifdef LEGACY_FLAC
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	464 d_set_read_callback(decoder, read_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	465 d_set_write_callback(decoder, write_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	466 d_set_metadata_callback(decoder, metadata_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	467 d_set_error_callback(decoder, error_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	468 d_set_seek_callback(decoder, seek_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	469 d_set_tell_callback(decoder, tell_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	470 d_set_length_callback(decoder, length_callback);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	471 d_set_eof_callback(decoder, eof_callback);
422 5b06e23d934e Removed backwards compatible API nastiness from FLAC decoder. Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	472
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	473 d_set_client_data(decoder, f);
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	474 #endif
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	475
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	476 f->rw = internal->rw;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	477 f->sample = sample;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	478 f->decoder = decoder;
164 77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust Ryan C. Gordon <icculus@icculus.org> parents: 155 diff changeset	479 f->sample->actual.format = 0;
182 3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	480 f->is_flac = 0 /* !!! FIXME: should be "has_extension", not "0". */;
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	481
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	482 internal->decoder_private = f;
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	483 /* really should check the init return value here: */
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	484 #ifdef LEGACY_FLAC
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	485 d_init(decoder);
516 46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	486 #else
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	487 FLAC__stream_decoder_init_stream(decoder, read_callback, seek_callback,
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	488 tell_callback, length_callback,
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	489 eof_callback, write_callback,
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	490 metadata_callback, error_callback, f);
46d5f399cb35 Patch from stable-1.0 branch r528:529. Ryan C. Gordon <icculus@icculus.org> parents: 477 diff changeset	491 #endif
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	492
400 9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	493 sample->flags = SOUND_SAMPLEFLAG_NONE;
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	494
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	495 pos = SDL_RWtell(f->rw);
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	496 if (SDL_RWseek(f->rw, 0, SEEK_END) > 0)
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	497 {
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	498 f->stream_length = SDL_RWtell(f->rw);
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	499 if (SDL_RWseek(f->rw, pos, SEEK_SET) == -1)
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	500 {
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	501 free_flac(f);
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	502 BAIL_MACRO(ERR_IO_ERROR, 0);
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	503 } /* if */
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	504 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	505 } /* if */
9d0b5ec9cc26 FIXME cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 393 diff changeset	506
231 d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	507 /*
182 3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	508 * If we are not sure this is a FLAC stream, check for the STREAMINFO
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	509 * metadata block. If not, we'd have to peek at the first audio frame
182 3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	510 * and get the sound format from there, but that is not yet
3849438b735e Checks magic number again, unless the file extension is recognized. Ryan C. Gordon <icculus@icculus.org> parents: 166 diff changeset	511 * implemented.
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	512 */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	513 if (!f->is_flac)
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	514 {
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	515 d_process_metadata(decoder);
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	516
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	517 /* Still not FLAC? Give up. */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	518 if (!f->is_flac)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	519 {
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	520 free_flac(f);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	521 BAIL_MACRO("FLAC: No metadata found. Not a FLAC stream?", 0);
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	522 } /* if */
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	523 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	524
164 77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust Ryan C. Gordon <icculus@icculus.org> parents: 155 diff changeset	525 SNDDBG(("FLAC: Accepting data stream.\n"));
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	526 return(1);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	527 } /* FLAC_open */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	528
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	529
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	530 static void FLAC_close(Sound_Sample *sample)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	531 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	532 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	533 flac_t f = (flac_t ) internal->decoder_private;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	534
166 d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 164 diff changeset	535 free_flac(f);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	536 } /* FLAC_close */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	537
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	538
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	539 static Uint32 FLAC_read(Sound_Sample *sample)
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	540 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	541 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	542 flac_t f = (flac_t ) internal->decoder_private;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	543 Uint32 len;
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	544
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	545 if (!d_process_one_frame(f->decoder))
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	546 {
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	547 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	548 BAIL_MACRO("FLAC: Couldn't decode frame.", 0);
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	549 } /* if */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	550
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	551 if (d_get_state(f->decoder) == D_END_OF_STREAM)
231 d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	552 {
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	553 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	554 return(0);
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	555 } /* if */
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	556
164 77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust Ryan C. Gordon <icculus@icculus.org> parents: 155 diff changeset	557 /* An error may have been signalled through the error callback. */
77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust Ryan C. Gordon <icculus@icculus.org> parents: 155 diff changeset	558 if (sample->flags & SOUND_SAMPLEFLAG_ERROR)
77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust Ryan C. Gordon <icculus@icculus.org> parents: 155 diff changeset	559 return(0);
231 d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	560
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	561 return(f->frame_size);
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	562 } /* FLAC_read */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	563
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	564
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	565 static int FLAC_rewind(Sound_Sample *sample)
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	566 {
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	567 return FLAC_seek(sample, 0);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	568 } /* FLAC_rewind */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	569
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	570
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	571 static int FLAC_seek(Sound_Sample *sample, Uint32 ms)
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	572 {
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	573 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	574 flac_t f = (flac_t ) internal->decoder_private;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	575
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	576 d_seek_absolute(f->decoder, (ms * sample->actual.rate) / 1000);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	577 return(1);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	578 } /* FLAC_seek */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	579
155 72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	580 #endif /* SOUND_SUPPORTS_FLAC */
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	581
72ff7d3a25b6 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	582 /* end of flac.c ... */

Mercurial > SDL_sound_CoreAudio

annotate decoders/flac.c @ 552:2e8907ff98e9