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Diffstat (limited to '')
-rw-r--r-- | src/video_core/command_classes/codecs/codec.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/video_core/command_classes/codecs/codec.cpp b/src/video_core/command_classes/codecs/codec.cpp new file mode 100644 index 000000000..2df410be8 --- /dev/null +++ b/src/video_core/command_classes/codecs/codec.cpp @@ -0,0 +1,114 @@ +// Copyright 2020 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <cstring> +#include <fstream> +#include "common/assert.h" +#include "video_core/command_classes/codecs/codec.h" +#include "video_core/command_classes/codecs/h264.h" +#include "video_core/command_classes/codecs/vp9.h" +#include "video_core/gpu.h" +#include "video_core/memory_manager.h" + +extern "C" { +#include <libavutil/opt.h> +} + +namespace Tegra { + +Codec::Codec(GPU& gpu_) + : gpu(gpu_), h264_decoder(std::make_unique<Decoder::H264>(gpu)), + vp9_decoder(std::make_unique<Decoder::VP9>(gpu)) {} + +Codec::~Codec() { + if (!initialized) { + return; + } + // Free libav memory + avcodec_send_packet(av_codec_ctx, nullptr); + avcodec_receive_frame(av_codec_ctx, av_frame); + avcodec_flush_buffers(av_codec_ctx); + + av_frame_unref(av_frame); + av_free(av_frame); + avcodec_close(av_codec_ctx); +} + +void Codec::SetTargetCodec(NvdecCommon::VideoCodec codec) { + LOG_INFO(Service_NVDRV, "NVDEC video codec initialized to {}", static_cast<u32>(codec)); + current_codec = codec; +} + +void Codec::StateWrite(u32 offset, u64 arguments) { + u8* const state_offset = reinterpret_cast<u8*>(&state) + offset * sizeof(u64); + std::memcpy(state_offset, &arguments, sizeof(u64)); +} + +void Codec::Decode() { + bool is_first_frame = false; + + if (!initialized) { + if (current_codec == NvdecCommon::VideoCodec::H264) { + av_codec = avcodec_find_decoder(AV_CODEC_ID_H264); + } else if (current_codec == NvdecCommon::VideoCodec::Vp9) { + av_codec = avcodec_find_decoder(AV_CODEC_ID_VP9); + } else { + LOG_ERROR(Service_NVDRV, "Unknown video codec {}", static_cast<u32>(current_codec)); + return; + } + + av_codec_ctx = avcodec_alloc_context3(av_codec); + av_frame = av_frame_alloc(); + av_opt_set(av_codec_ctx->priv_data, "tune", "zerolatency", 0); + + // TODO(ameerj): libavcodec gpu hw acceleration + + const auto av_error = avcodec_open2(av_codec_ctx, av_codec, nullptr); + if (av_error < 0) { + LOG_ERROR(Service_NVDRV, "avcodec_open2() Failed."); + av_frame_unref(av_frame); + av_free(av_frame); + avcodec_close(av_codec_ctx); + return; + } + initialized = true; + is_first_frame = true; + } + bool vp9_hidden_frame = false; + + AVPacket packet{}; + av_init_packet(&packet); + std::vector<u8> frame_data; + + if (current_codec == NvdecCommon::VideoCodec::H264) { + frame_data = h264_decoder->ComposeFrameHeader(state, is_first_frame); + } else if (current_codec == NvdecCommon::VideoCodec::Vp9) { + frame_data = vp9_decoder->ComposeFrameHeader(state); + vp9_hidden_frame = vp9_decoder->WasFrameHidden(); + } + + packet.data = frame_data.data(); + packet.size = static_cast<int>(frame_data.size()); + + avcodec_send_packet(av_codec_ctx, &packet); + + if (!vp9_hidden_frame) { + // Only receive/store visible frames + avcodec_receive_frame(av_codec_ctx, av_frame); + } +} + +AVFrame* Codec::GetCurrentFrame() { + return av_frame; +} + +const AVFrame* Codec::GetCurrentFrame() const { + return av_frame; +} + +NvdecCommon::VideoCodec Codec::GetCurrentCodec() const { + return current_codec; +} + +} // namespace Tegra |