SDL_sound_CoreAudio: decoders/midi.c annotate

annotate decoders/midi.c @ 355:5dbf2f9cde00

Added docs stuff.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 07 Jun 2002 13:26:13 +0000
parents	498240aa76f1
children	cbb15ecf423a

rev	line source
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /*
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	21 * MIDI decoder for SDL_sound.
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 *
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	23 * This driver handles MIDI data through a stripped-down version of TiMidity.
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	24 * See the documentation in the timidity subdirectory.
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 *
184 47cc2de2ae36 Changed reference to "LICENSE" file to "COPYING". Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	26 * Please see the file COPYING in the source's root directory.
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27 *
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	28 * This file written by Torbj�rn Andersson. (d91tan@Update.UU.SE)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	29 */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	30
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	31 #if HAVE_CONFIG_H
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	32 # include <config.h>
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 #endif
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35 #ifdef SOUND_SUPPORTS_MIDI
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37 #include <stdio.h>
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 #include <stdlib.h>
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 #include <string.h>
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 #include <assert.h>
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	41
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42 #include "SDL_sound.h"
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	44 #define __SDL_SOUND_INTERNAL__
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	45 #include "SDL_sound_internal.h"
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	46
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	47 #include "timidity.h"
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	48
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	49
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50 static int MIDI_init(void);
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51 static void MIDI_quit(void);
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52 static int MIDI_open(Sound_Sample sample, const char ext);
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	53 static void MIDI_close(Sound_Sample *sample);
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	54 static Uint32 MIDI_read(Sound_Sample *sample);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	55 static int MIDI_rewind(Sound_Sample *sample);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	56 static int MIDI_seek(Sound_Sample *sample, Uint32 ms);
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	57
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	58 static const char *extensions_midi[] = { "MIDI", "MID", NULL };
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	59 const Sound_DecoderFunctions __Sound_DecoderFunctions_MIDI =
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	60 {
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	61 {
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 138 diff changeset	62 extensions_midi,
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	63 "MIDI decoder, using a subset of TiMidity",
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64 "Torbj�rn Andersson <d91tan@Update.UU.SE>",
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	65 "http://www.icculus.org/SDL_sound/"
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66 },
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	68 MIDI_init, /* init() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	69 MIDI_quit, /* quit() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	70 MIDI_open, /* open() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	71 MIDI_close, /* close() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	72 MIDI_read, /* read() method */
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	73 MIDI_rewind, /* rewind() method */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	74 MIDI_seek /* seek() method */
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	75 };
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78 static int MIDI_init(void)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	79 {
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	80 BAIL_IF_MACRO(Timidity_Init() < 0, "MIDI: Could not initialise", 0);
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	81 return(1);
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	82 } /* MIDI_init */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	83
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	84
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	85 static void MIDI_quit(void)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	86 {
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	87 Timidity_Exit();
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	88 } /* MIDI_quit */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	89
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	90
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	91 static int MIDI_open(Sound_Sample sample, const char ext)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	92 {
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	93 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	94 SDL_RWops *rw = internal->rw;
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	95 SDL_AudioSpec spec;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	96 MidiSong *song;
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	97
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	98 spec.channels = 2;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	99 spec.format = AUDIO_S16SYS;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	100 spec.freq = 44100;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	101 spec.samples = 4096;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	102
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	103 song = Timidity_LoadSong(rw, &spec);
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	104 BAIL_IF_MACRO(song == NULL, "MIDI: Not a MIDI file.", 0);
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	105 Timidity_SetVolume(song, 100);
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	106 Timidity_Start(song);
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	107
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	108 SNDDBG(("MIDI: Accepting data stream.\n"));
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	109
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	110 internal->decoder_private = (void *) song;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	111
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	112 sample->actual.channels = 2;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	113 sample->actual.rate = 44100;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	114 sample->actual.format = AUDIO_S16SYS;
f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	115
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	116 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	117 return(1); /* we'll handle this data. */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	118 } /* MIDI_open */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	119
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	120
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	121 static void MIDI_close(Sound_Sample *sample)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	122 {
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	123 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	124 MidiSong song = (MidiSong ) internal->decoder_private;
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	125
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	126 Timidity_FreeSong(song);
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	127 } /* MIDI_close */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	128
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	129
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	130 static Uint32 MIDI_read(Sound_Sample *sample)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	131 {
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	132 Uint32 retval;
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	133 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	134 MidiSong song = (MidiSong ) internal->decoder_private;
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	135
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	136 retval = Timidity_PlaySome(song, internal->buffer, internal->buffer_size);
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	137
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138 /* Make sure the read went smoothly... */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	139 if (retval == 0)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	140 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	141
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142 else if (retval == -1)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	143 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	144
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	145 /* (next call this EAGAIN may turn into an EOF or error.) */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	146 else if (retval < internal->buffer_size)
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	147 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	148
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	149 return(retval);
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	150 } /* MIDI_read */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	151
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	152
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	153 static int MIDI_rewind(Sound_Sample *sample)
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	154 {
231 d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	155 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	156 MidiSong song = (MidiSong ) internal->decoder_private;
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	157
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	158 Timidity_Start(song);
d3dc34315ac7 Rewind method implemented by Torbj�rn. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	159 return(1);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	160 } /* MIDI_rewind */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 200 diff changeset	161
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	162
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	163 static int MIDI_seek(Sound_Sample *sample, Uint32 ms)
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	164 {
312 498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	165 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	166 MidiSong song = (MidiSong ) internal->decoder_private;
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	167
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	168 Timidity_Seek(song, ms);
498240aa76f1 Seek implementations. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	169 return(1);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	170 } /* MIDI_seek */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 231 diff changeset	171
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172 #endif /* SOUND_SUPPORTS_MIDI */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173
200 f75ed2d72238 Rewrite to call an included, patched version of Timidity routines directly. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	174
108 803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	175 /* end of midi.c ... */
803ba4dabbce Initial add, from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	176

Mercurial > SDL_sound_CoreAudio

annotate decoders/midi.c @ 355:5dbf2f9cde00