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Add environment variable for overriding decoder capabilities

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This commit is contained in:
Cameron Gutman 2022-10-14 23:39:49 -05:00
parent 21edcc8113
commit 704ce4ff0c
1 changed files with 22 additions and 9 deletions
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31
app/streaming/video/ffmpeg.cpp
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@ -70,18 +70,31 @@ void FFmpegVideoDecoder::setHdrMode(bool enabled)
int FFmpegVideoDecoder::getDecoderCapabilities() int FFmpegVideoDecoder::getDecoderCapabilities()
{ {
int capabilities = m_BackendRenderer->getDecoderCapabilities(); bool ok;
if (!isHardwareAccelerated()) { int capabilities = qEnvironmentVariableIntValue("DECODER_CAPS", &ok);
// Slice up to 4 times for parallel CPU decoding, once slice per core if (ok) {
int slices = qMin(MAX_SLICES, SDL_GetCPUCount()); SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Using decoder capability override: 0x%x",
"Encoder configured for %d slices per frame", capabilities);
slices); }
capabilities |= CAPABILITY_SLICES_PER_FRAME(slices); else {
// Start with the backend renderer's capabilities
capabilities = m_BackendRenderer->getDecoderCapabilities();
if (!isHardwareAccelerated()) {
// Slice up to 4 times for parallel CPU decoding, once slice per core
int slices = qMin(MAX_SLICES, SDL_GetCPUCount());
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Encoder configured for %d slices per frame",
slices);
capabilities |= CAPABILITY_SLICES_PER_FRAME(slices);
}
} }
// We use our own decoder thread with the "pull" model // We use our own decoder thread with the "pull" model. This cannot
// be overridden using the by the user because it is critical to
// our operation.
capabilities |= CAPABILITY_PULL_RENDERER; capabilities |= CAPABILITY_PULL_RENDERER;
return capabilities; return capabilities;