pandory500/SDL-mirror
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Re-added MacOS X audio locking

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40349
This commit is contained in:
Sam Lantinga 2002-04-13 23:31:07 +00:00
parent 5b4fdd0de0
commit 3629d251f2
1 changed files with 17 additions and 9 deletions
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26
src/audio/macrom/SDL_romaudio.c
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@ -91,6 +91,10 @@ static SDL_AudioDevice *Audio_CreateDevice(int devindex)
this->UnlockAudio = Mac_UnlockAudio;
this->free = Audio_DeleteDevice;
#ifdef MACOSX /* MacOS X uses threaded audio, so normal thread code is okay */
this->LockAudio = NULL;
this->UnlockAudio = NULL;
#endif
return this;
}
@ -100,7 +104,7 @@ AudioBootStrap SNDMGR_bootstrap = {
};
#if defined(TARGET_API_MAC_CARBON) || defined(USE_RYANS_SOUNDCODE)
/* FIXME: Does this work correctly on MacOS X as well? */
/* This works correctly on MacOS X */
#pragma options align=power
@ -115,19 +119,23 @@ static volatile Uint32 fill_me = 0;
static void mix_buffer(SDL_AudioDevice *audio, UInt8 *buffer)
{
if ( ! audio->paused ) {
if ( audio->convert.needed ) {
audio->spec.callback(audio->spec.userdata,
(Uint8 *)audio->convert.buf,audio->convert.len);
SDL_ConvertAudio(&audio->convert);
#if 0
if ( audio->convert.len_cvt != audio->spec.size ) {
/* Uh oh... probably crashes here; */
}
#ifdef MACOSX
SDL_mutexP(audio->mixer_lock);
#endif
if ( audio->convert.needed ) {
audio->spec.callback(audio->spec.userdata,
(Uint8 *)audio->convert.buf,audio->convert.len);
SDL_ConvertAudio(&audio->convert);
if ( audio->convert.len_cvt != audio->spec.size ) {
/* Uh oh... probably crashes here */;
}
memcpy(buffer, audio->convert.buf, audio->convert.len_cvt);
} else {
audio->spec.callback(audio->spec.userdata, buffer, audio->spec.size);
}
#ifdef MACOSX
SDL_mutexV(audio->mixer_lock);
#endif
}
DecrementAtomic((SInt32 *) &need_to_mix);