fc72c53758
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8546 a1c6a512-1295-4272-9138-f99709370657
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Nick Lanham
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "autoconf.h"
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#ifdef ROCKBOX_HAS_SIMSOUND /* play sound in sim enabled */
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#include <memory.h>
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#include <stdlib.h>
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#include "uisdl.h"
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#include "sound.h"
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static int audio_len;
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static char *audio_pos;
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SDL_sem* sem;
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void mixaudio(void *udata, Uint8 *stream, int len)
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{
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(void)udata;
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/* Only play if we have data left */
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if ( audio_len == 0 )
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return;
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len = (len > audio_len) ? audio_len : len;
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memcpy(stream, audio_pos, len);
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audio_pos += len;
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audio_len -= len;
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if(audio_len == 0) {
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if(SDL_SemPost(sem))
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fprintf(stderr,"Couldn't post: %s",SDL_GetError());
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}
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}
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int sim_sound_init(void)
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{
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SDL_AudioSpec fmt;
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/* Set 16-bit stereo audio at 44Khz */
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fmt.freq = 44100;
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fmt.format = AUDIO_S16SYS;
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fmt.channels = 2;
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fmt.samples = 512; /* A good value for games */
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fmt.callback = mixaudio;
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fmt.userdata = NULL;
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sem = SDL_CreateSemaphore(0);
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/* Open the audio device and start playing sound! */
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if(SDL_OpenAudio(&fmt, NULL) < 0) {
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fprintf(stderr, "Unable to open audio: %s\n", SDL_GetError());
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return -1;
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}
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SDL_PauseAudio(0);
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return 0;
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}
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int sound_playback_thread(void *p)
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{
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int sndret = sim_sound_init();
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unsigned char *buf;
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long size;
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(void)p;
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while(sndret)
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SDL_Delay(100000); /* wait forever, can't play sound! */
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do {
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while(!sound_get_pcm)
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/* TODO: fix a fine thread-synch mechanism here */
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SDL_Delay(100);
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do {
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sound_get_pcm(&buf, &size);
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if(!size) {
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sound_get_pcm = NULL;
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break;
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}
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audio_pos = buf; // TODO: is this safe?
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audio_len = size;
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if(SDL_SemWait(sem))
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fprintf(stderr,"Couldn't wait: %s",SDL_GetError());
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} while(size);
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} while(1);
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}
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#endif /* ROCKBOX_HAS_SIMSOUND */
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