mirror of
https://github.com/yuzu-emu/yuzu.git
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114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "common/assert.h"
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#include "common/settings.h"
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#include "video_core/host1x/codecs/codec.h"
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#include "video_core/host1x/codecs/h264.h"
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#include "video_core/host1x/codecs/vp8.h"
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#include "video_core/host1x/codecs/vp9.h"
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#include "video_core/host1x/host1x.h"
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#include "video_core/memory_manager.h"
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namespace Tegra {
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Codec::Codec(Host1x::Host1x& host1x_, const Host1x::NvdecCommon::NvdecRegisters& regs)
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: host1x(host1x_), state{regs}, h264_decoder(std::make_unique<Decoder::H264>(host1x)),
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vp8_decoder(std::make_unique<Decoder::VP8>(host1x)),
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vp9_decoder(std::make_unique<Decoder::VP9>(host1x)) {}
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Codec::~Codec() = default;
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void Codec::Initialize() {
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initialized = decode_api.Initialize(current_codec);
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}
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void Codec::SetTargetCodec(Host1x::NvdecCommon::VideoCodec codec) {
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if (current_codec != codec) {
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current_codec = codec;
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LOG_INFO(Service_NVDRV, "NVDEC video codec initialized to {}", GetCurrentCodecName());
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}
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}
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void Codec::Decode() {
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const bool is_first_frame = !initialized;
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if (is_first_frame) {
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Initialize();
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}
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if (!initialized) {
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return;
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}
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// Assemble bitstream.
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bool vp9_hidden_frame = false;
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size_t configuration_size = 0;
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const auto packet_data = [&]() {
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switch (current_codec) {
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case Tegra::Host1x::NvdecCommon::VideoCodec::H264:
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return h264_decoder->ComposeFrame(state, &configuration_size, is_first_frame);
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case Tegra::Host1x::NvdecCommon::VideoCodec::VP8:
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return vp8_decoder->ComposeFrame(state);
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case Tegra::Host1x::NvdecCommon::VideoCodec::VP9:
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vp9_decoder->ComposeFrame(state);
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vp9_hidden_frame = vp9_decoder->WasFrameHidden();
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return vp9_decoder->GetFrameBytes();
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default:
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ASSERT(false);
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return std::span<const u8>{};
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}
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}();
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// Send assembled bitstream to decoder.
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if (!decode_api.SendPacket(packet_data, configuration_size)) {
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return;
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}
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// Only receive/store visible frames.
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if (vp9_hidden_frame) {
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return;
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}
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// Receive output frames from decoder.
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decode_api.ReceiveFrames(frames);
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while (frames.size() > 10) {
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LOG_DEBUG(HW_GPU, "ReceiveFrames overflow, dropped frame");
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frames.pop();
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}
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}
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std::unique_ptr<FFmpeg::Frame> Codec::GetCurrentFrame() {
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// Sometimes VIC will request more frames than have been decoded.
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// in this case, return a blank frame and don't overwrite previous data.
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if (frames.empty()) {
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return {};
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}
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auto frame = std::move(frames.front());
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frames.pop();
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return frame;
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}
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Host1x::NvdecCommon::VideoCodec Codec::GetCurrentCodec() const {
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return current_codec;
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}
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std::string_view Codec::GetCurrentCodecName() const {
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switch (current_codec) {
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case Host1x::NvdecCommon::VideoCodec::None:
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return "None";
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case Host1x::NvdecCommon::VideoCodec::H264:
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return "H264";
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case Host1x::NvdecCommon::VideoCodec::VP8:
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return "VP8";
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case Host1x::NvdecCommon::VideoCodec::H265:
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return "H265";
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case Host1x::NvdecCommon::VideoCodec::VP9:
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return "VP9";
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default:
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return "Unknown";
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}
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}
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} // namespace Tegra
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