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emscriptenaudio: Reworked to use SDL_AudioStream.

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This commit is contained in:
Ryan C. Gordon
2017-01-05 21:31:02 -05:00
parent 3761b5f60b
commit f07a1a5ad5
3 changed files with 83 additions and 155 deletions
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29
src/audio/SDL_audio.c
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@@ -1243,6 +1243,21 @@ open_audio_device(const char *devname, int iscapture,
device->spec.userdata = device;
}
/* !!! FIXME: rename this from fake_stream */
/* Allocate a scratch audio buffer */
device->fake_stream_len = build_stream ? device->callbackspec.size : 0;
if (device->spec.size > device->fake_stream_len) {
device->fake_stream_len = device->spec.size;
}
SDL_assert(device->fake_stream_len > 0);
device->fake_stream = (Uint8 *) SDL_malloc(device->fake_stream_len);
if (device->fake_stream == NULL) {
close_audio_device(device);
SDL_OutOfMemory();
return 0;
}
open_devices[id] = device; /* add it to our list of open devices. */
/* Start the audio thread if necessary */
@@ -1253,20 +1268,6 @@ open_audio_device(const char *devname, int iscapture,
const size_t stacksize = is_internal_thread ? 64 * 1024 : 0;
char threadname[64];
/* Allocate a fake audio buffer; only used by our internal threads. */
device->fake_stream_len = build_stream ? device->callbackspec.size : 0;
if (device->spec.size > device->fake_stream_len) {
device->fake_stream_len = device->spec.size;
}
SDL_assert(device->fake_stream_len > 0);
device->fake_stream = (Uint8 *) SDL_malloc(device->fake_stream_len);
if (device->fake_stream == NULL) {
close_audio_device(device);
SDL_OutOfMemory();
return 0;
}
SDL_snprintf(threadname, sizeof (threadname), "SDLAudioDev%d", (int) device->id);
device->thread = SDL_CreateThreadInternal(iscapture ? SDL_CaptureAudio : SDL_RunAudio, threadname, stacksize, device);