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Code Issues Releases Activity

video_core/codecs: more robust ffmpeg hwdecoder selection logic

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This commit is contained in:
liushuyu 2021-11-28 23:51:25 -07:00
parent fdcc161323
commit cd27f211c8
1 changed files with 27 additions and 10 deletions
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37
src/video_core/command_classes/codecs/codec.cpp
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@ -23,6 +23,14 @@ namespace Tegra {
namespace {
constexpr AVPixelFormat PREFERRED_GPU_FMT = AV_PIX_FMT_NV12;
constexpr AVPixelFormat PREFERRED_CPU_FMT = AV_PIX_FMT_YUV420P;
constexpr std::array PREFERRED_GPU_DECODERS = {AV_HWDEVICE_TYPE_CUDA,
#ifdef _WIN32
AV_HWDEVICE_TYPE_D3D11VA, AV_HWDEVICE_TYPE_DXVA2,
#elif linux
AV_HWDEVICE_TYPE_VDPAU,
#endif
// last resort for Linux Flatpak (w/ NVIDIA)
AV_HWDEVICE_TYPE_VULKAN};
void AVPacketDeleter(AVPacket* ptr) {
av_packet_free(&ptr);
@ -61,6 +69,19 @@ Codec::~Codec() {
av_buffer_unref(&av_gpu_decoder);
}
// List all the currently available hwcontext in ffmpeg
static std::vector<AVHWDeviceType> ListSupportedContexts() {
std::vector<AVHWDeviceType> contexts{};
enum AVHWDeviceType current_device_type = AV_HWDEVICE_TYPE_NONE;
do {
current_device_type = av_hwdevice_iterate_types(current_device_type);
// filter out VA-API since we will try that first if supported
if (current_device_type != AV_HWDEVICE_TYPE_VAAPI)
contexts.push_back(current_device_type);
} while (current_device_type != AV_HWDEVICE_TYPE_NONE);
return contexts;
}
#ifdef LIBVA_FOUND
// List all the currently loaded Linux modules
static std::vector<std::string> ListLinuxKernelModules() {
@ -122,16 +143,12 @@ bool Codec::CreateGpuAvDevice() {
av_dict_free(&hwdevice_options);
#endif
static constexpr auto HW_CONFIG_METHOD = AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX;
static constexpr std::array GPU_DECODER_TYPES{
#ifdef linux
AV_HWDEVICE_TYPE_VDPAU,
#endif
AV_HWDEVICE_TYPE_CUDA,
#ifdef _WIN32
AV_HWDEVICE_TYPE_D3D11VA,
#endif
};
for (const auto& type : GPU_DECODER_TYPES) {
static const auto supported_contexts = ListSupportedContexts();
for (const auto& type : PREFERRED_GPU_DECODERS) {
if (std::none_of(supported_contexts.begin(), supported_contexts.end(),
[&type](const auto& context) { return context == type; })) {
continue;
}
const int hwdevice_res = av_hwdevice_ctx_create(&av_gpu_decoder, type, nullptr, nullptr, 0);
if (hwdevice_res < 0) {
LOG_DEBUG(Service_NVDRV, "{} av_hwdevice_ctx_create failed {}",