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Experiment with improving async decoding on the Emscripten build.

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This commit is contained in:
David Reid
2021-02-07 08:10:41 +10:00
parent b8f00dc4f9
commit f27a330a32
1 changed files with 27 additions and 1 deletions
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research/miniaudio_engine.h
+27 -1
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@@ -10355,7 +10355,33 @@ MA_API ma_engine_config ma_engine_config_init_default(void)
static void ma_engine_data_callback_internal(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
ma_engine_data_callback((ma_engine*)pDevice->pUserData, pFramesOut, pFramesIn, frameCount);
ma_engine* pEngine = (ma_engine*)pDevice->pUserData;
/*
Experiment: Try processing a resource manager job if we're on the Emscripten build.
This serves two purposes:
1) It ensures jobs are actually processed at some point since we cannot guarantee that the
caller is doing the right thing and calling ma_resource_manager_process_next_job(); and
2) It's an attempt at working around an issue where processing jobs on the Emscripten main
loop doesn't work as well as it should. When trying to load sounds without the `DECODE`
flag or with the `ASYNC` flag, the sound data is just not able to be loaded in time
before the callback is processed. I think it's got something to do with the single-
threaded nature of Web, but I'm not entirely sure.
*/
#if !defined(MA_NO_RESOURCE_MANAGER) && defined(MA_EMSCRIPTEN)
{
if (pEngine->pResourceManager != NULL) {
if ((pEngine->pResourceManager->config.flags & MA_RESOURCE_MANAGER_FLAG_NO_THREADING) != 0) {
ma_resource_manager_process_next_job(pEngine->pResourceManager);
}
}
}
#endif
ma_engine_data_callback(pEngine, pFramesOut, pFramesIn, frameCount);
}
MA_API ma_result ma_engine_init(const ma_engine_config* pConfig, ma_engine* pEngine)