SDL_sound_CoreAudio: playsound/playsound

annotate playsound/playsound_simple.c @ 562:7e08477b0fc1

MP3 decoder upgrade work. Ripped out SMPEG and mpglib support, replaced it with "mpg123.c" and libmpg123. libmpg123 is a much better version of mpglib, so it should solve all the problems about MP3's not seeking, or most modern MP3's not playing at all, etc. Since you no longer have to make a tradeoff with SMPEG for features, and SMPEG is basically rotting, I removed it from the project. There is still work to be done with libmpg123...there are MMX, 3DNow, SSE, Altivec, etc decoders which we don't have enabled at the moment, and the build system could use some work to make this compile more cleanly, etc. Still: huge win.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 30 Jan 2009 02:44:47 -0500
parents	2e8907ff98e9
children

rev	line source
494 355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /**
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	21 * This is just a simple "decode sound, play it through SDL" example.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 * The much more complex, fancy, and robust code is playsound.c.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23 *
552 2e8907ff98e9 Replaced references to COPYING with references to LICENSE.txt ... Ryan C. Gordon <icculus@icculus.org> parents: 526 diff changeset	24 * Please see the file LICENSE.txt in the source's root directory.
494 355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 *
526 2df1f5c62d38 Updated my email address. Ryan C. Gordon <icculus@icculus.org> parents: 506 diff changeset	26 * This file written by Ryan C. Gordon. (icculus@icculus.org)
494 355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	28
504 6455549cd562 Clean up gcc4 compiler warnings. Ryan C. Gordon <icculus@icculus.org> parents: 494 diff changeset	29 #include <stdio.h>
6455549cd562 Clean up gcc4 compiler warnings. Ryan C. Gordon <icculus@icculus.org> parents: 494 diff changeset	30 #include <stdlib.h>
506 6ae286a80da5 Whoops, didn't actually fix the gcc4 warnings last time. Ryan C. Gordon <icculus@icculus.org> parents: 504 diff changeset	31 #include <string.h>
504 6455549cd562 Clean up gcc4 compiler warnings. Ryan C. Gordon <icculus@icculus.org> parents: 494 diff changeset	32
494 355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 #include "SDL.h"
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34 #include "SDL_sound.h"
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 /* global decoding state. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37 typedef struct
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 Sound_Sample *sample;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 SDL_AudioSpec devformat;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	41 Uint8 *decoded_ptr;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42 Uint32 decoded_bytes;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43 } PlaysoundAudioCallbackData;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	44
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	45 /*
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	46 * This variable is flipped to non-zero when the audio callback has
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	47 * finished playing the whole file.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	48 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	49 static volatile int global_done_flag = 0;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52 /*
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	53 * The audio callback. SDL calls this frequently to feed the audio device.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	54 * We decode the audio file being played in here in small chunks and feed
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	55 * the device as necessary. Other solutions may want to predecode more
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	56 * (or all) of the file, since this needs to run fast and frequently,
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	57 * but since we're only sitting here and waiting for the file to play,
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	58 * the only real requirement is that we can decode a given audio file
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	59 * faster than realtime, which isn't really a problem with any modern format
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	60 * on even pretty old hardware at this point.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	61 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	62 static void audio_callback(void userdata, Uint8 stream, int len)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	63 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64 PlaysoundAudioCallbackData data = (PlaysoundAudioCallbackData ) userdata;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	65 Sound_Sample *sample = data->sample;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66 int bw = 0; /* bytes written to stream this time through the callback */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	68 while (bw < len)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	69 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	70 int cpysize; /* bytes to copy on this iteration of the loop. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72 if (data->decoded_bytes == 0) /* need more data! */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	73 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	74 /* if there wasn't previously an error or EOF, read more. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	75 if ( ((sample->flags & SOUND_SAMPLEFLAG_ERROR) == 0) &&
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76 ((sample->flags & SOUND_SAMPLEFLAG_EOF) == 0) )
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78 data->decoded_bytes = Sound_Decode(sample);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	79 data->decoded_ptr = sample->buffer;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	80 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	81
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	82 if (data->decoded_bytes == 0)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	83 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	84 /* ...there isn't any more data to read! */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	85 memset(stream + bw, '\0', len - bw); /* write silence. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	86 global_done_flag = 1;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	87 return; /* we're done playback, one way or another. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	88 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	89 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	90
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	91 /* we have data decoded and ready to write to the device... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	92 cpysize = len - bw; /* len - bw == amount device still wants. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	93 if (cpysize > data->decoded_bytes)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	94 cpysize = data->decoded_bytes; /* clamp to what we have left. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	95
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	96 /* if it's 0, next iteration will decode more or decide we're done. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	97 if (cpysize > 0)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	98 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	99 /* write this iteration's data to the device. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	100 memcpy(stream + bw, (Uint8 *) data->decoded_ptr, cpysize);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	101
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	102 /* update state for next iteration or callback */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	103 bw += cpysize;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	104 data->decoded_ptr += cpysize;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	105 data->decoded_bytes -= cpysize;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	106 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	107 } /* while */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	108 } /* audio_callback */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	109
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	110
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	111
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	112 static void playOneSoundFile(const char *fname)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	113 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	114 PlaysoundAudioCallbackData data;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	115
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	116 memset(&data, '\0', sizeof (PlaysoundAudioCallbackData));
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	117 data.sample = Sound_NewSampleFromFile(fname, NULL, 65536);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	118 if (data.sample == NULL)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	119 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	120 fprintf(stderr, "Couldn't load '%s': %s.\n", fname, Sound_GetError());
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	121 return;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	122 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	123
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	124 /*
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	125 * Open device in format of the the sound to be played.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	126 * We open and close the device for each sound file, so that SDL
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	127 * handles the data conversion to hardware format; this is the
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	128 * easy way out, but isn't practical for most apps. Usually you'll
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	129 * want to pick one format for all the data or one format for the
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	130 * audio device and convert the data when needed. This is a more
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	131 * complex issue than I can describe in a source code comment, though.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	132 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	133 data.devformat.freq = data.sample->actual.rate;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	134 data.devformat.format = data.sample->actual.format;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	135 data.devformat.channels = data.sample->actual.channels;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	136 data.devformat.samples = 4096; /* I just picked a largish number here. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	137 data.devformat.callback = audio_callback;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138 data.devformat.userdata = &data;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	139 if (SDL_OpenAudio(&data.devformat, NULL) < 0)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	140 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	141 fprintf(stderr, "Couldn't open audio device: %s.\n", SDL_GetError());
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142 Sound_FreeSample(data.sample);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	143 return;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	144 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	145
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	146 printf("Now playing [%s]...\n", fname);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	147 SDL_PauseAudio(0); /* SDL audio device is "paused" right after opening. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	148
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	149 global_done_flag = 0; /* the audio callback will flip this flag. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	150 while (!global_done_flag)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	151 SDL_Delay(10); /* just wait for the audio callback to finish. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	152
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	153 /* at this point, we've played the entire audio file. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	154 SDL_PauseAudio(1); /* so stop the device. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	155
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	156 /*
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	157 * Sleep two buffers' worth of audio before closing, in order
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	158 * to allow the playback to finish. This isn't always enough;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	159 * perhaps SDL needs a way to explicitly wait for device drain?
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	160 * Most apps don't have this issue, since they aren't explicitly
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	161 * closing the device as soon as a sound file is done playback.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	162 * As an alternative for this app, you could also change the callback
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	163 * to write silence for a call or two before flipping global_done_flag.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	164 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	165 SDL_Delay(2 * 1000 * data.devformat.samples / data.devformat.freq);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	167 /* if there was an error, tell the user. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	168 if (data.sample->flags & SOUND_SAMPLEFLAG_ERROR)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	169 fprintf(stderr, "Error decoding file: %s\n", Sound_GetError());
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	170
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	171 Sound_FreeSample(data.sample); /* clean up SDL_Sound resources... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172 SDL_CloseAudio(); /* will reopen with next file's format. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173 } /* playOneSoundFile */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	174
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	175
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	176 int main(int argc, char **argv)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	177 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	178 int i;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	179
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	180 if (!Sound_Init()) /* this calls SDL_Init(SDL_INIT_AUDIO) ... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	181 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	182 fprintf(stderr, "Sound_Init() failed: %s.\n", Sound_GetError());
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	183 SDL_Quit();
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184 return(42);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	186
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	187 for (i = 1; i < argc; i++) /* each arg is an audio file to play. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	188 playOneSoundFile(argv[i]);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	189
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	190 /* Shutdown the libraries... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	191 Sound_Quit();
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192 SDL_Quit();
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193 return(0);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194 } /* main */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196 /* end of playsound-simple.c ... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	197

Mercurial > SDL_sound_CoreAudio

annotate playsound/playsound_simple.c @ 562:7e08477b0fc1