SDL_sound_CoreAudio: playsound/playsound

annotate playsound/playsound_simple.c @ 504:6455549cd562

Clean up gcc4 compiler warnings.

author	Ryan C. Gordon <icculus@icculus.org>
date	Sat, 17 Dec 2005 18:46:20 +0000
parents	355129c687b7
children	6ae286a80da5

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 *
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	24 * Please see the file COPYING in the source's root directory.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 *
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	26 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org)
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>
6455549cd562 Clean up gcc4 compiler warnings. Ryan C. Gordon <icculus@icculus.org> parents: 494 diff changeset	31
494 355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	32 #include "SDL.h"
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 #include "SDL_sound.h"
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35 /* global decoding state. */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 typedef struct
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 Sound_Sample *sample;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 SDL_AudioSpec devformat;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 Uint8 *decoded_ptr;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	41 Uint32 decoded_bytes;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42 } PlaysoundAudioCallbackData;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43
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 * 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	46 * finished playing the whole file.
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	47 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	48 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	49
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 * 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	53 * 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	54 * 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	55 * (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	56 * 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	57 * 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	58 * 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	59 * 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	60 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	61 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	62 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	63 PlaysoundAudioCallbackData data = (PlaysoundAudioCallbackData ) userdata;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64 Sound_Sample *sample = data->sample;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	65 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	66
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67 while (bw < len)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	68 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	69 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	70
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71 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	72 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	73 /* 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	74 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	75 ((sample->flags & SOUND_SAMPLEFLAG_EOF) == 0) )
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77 data->decoded_bytes = Sound_Decode(sample);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78 data->decoded_ptr = sample->buffer;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	79 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	80
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	81 if (data->decoded_bytes == 0)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	82 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	83 /* ...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	84 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	85 global_done_flag = 1;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	86 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	87 } /* if */
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
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	90 /* 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	91 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	92 if (cpysize > data->decoded_bytes)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	93 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	94
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	95 /* 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	96 if (cpysize > 0)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	97 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	98 /* 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	99 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	100
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	101 /* 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	102 bw += cpysize;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	103 data->decoded_ptr += cpysize;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	104 data->decoded_bytes -= cpysize;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	105 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	106 } /* while */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	107 } /* audio_callback */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	108
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 static void playOneSoundFile(const char *fname)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	112 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	113 PlaysoundAudioCallbackData data;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	114
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	115 memset(&data, '\0', sizeof (PlaysoundAudioCallbackData));
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	116 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	117 if (data.sample == NULL)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	118 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	119 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	120 return;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	121 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	122
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 * 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	125 * 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	126 * 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	127 * 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	128 * 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	129 * 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	130 * 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	131 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	132 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	133 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	134 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	135 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	136 data.devformat.callback = audio_callback;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	137 data.devformat.userdata = &data;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138 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	139 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	140 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	141 Sound_FreeSample(data.sample);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142 return;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	143 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	144
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	145 printf("Now playing [%s]...\n", fname);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	146 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	147
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	148 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	149 while (!global_done_flag)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	150 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	151
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	152 /* 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	153 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	154
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 * 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	157 * 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	158 * 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	159 * 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	160 * 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	161 * 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	162 * 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	163 */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	164 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	165
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166 /* 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	167 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	168 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	169
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	170 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	171 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	172 } /* playOneSoundFile */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173
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 int main(int argc, char **argv)
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	176 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	177 int i;
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	178
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	179 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	180 {
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	181 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	182 SDL_Quit();
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	183 return(42);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184 } /* if */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	186 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	187 playOneSoundFile(argv[i]);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	188
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	189 /* Shutdown the libraries... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	190 Sound_Quit();
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	191 SDL_Quit();
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192 return(0);
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193 } /* main */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195 /* end of playsound-simple.c ... */
355129c687b7 Added playsound_simple.c, as a basic example. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196

Mercurial > SDL_sound_CoreAudio

annotate playsound/playsound_simple.c @ 504:6455549cd562