VideoCore: Refactor syncing.

src/video_core/host1x/codecs/codec.h

@@ -0,0 +1,81 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+#include <string_view>
+#include <queue>
+#include "common/common_types.h"
+#include "video_core/host1x/nvdec_common.h"
+
+extern "C" {
+#if defined(__GNUC__) || defined(__clang__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wconversion"
+#endif
+#include <libavcodec/avcodec.h>
+#if defined(__GNUC__) || defined(__clang__)
+#pragma GCC diagnostic pop
+#endif
+}
+
+namespace Tegra {
+class GPU;
+
+void AVFrameDeleter(AVFrame* ptr);
+using AVFramePtr = std::unique_ptr<AVFrame, decltype(&AVFrameDeleter)>;
+
+namespace Decoder {
+class H264;
+class VP8;
+class VP9;
+} // namespace Decoder
+
+class Codec {
+public:
+    explicit Codec(GPU& gpu, const Host1x::NvdecCommon::NvdecRegisters& regs);
+    ~Codec();
+
+    /// Initialize the codec, returning success or failure
+    void Initialize();
+
+    /// Sets NVDEC video stream codec
+    void SetTargetCodec(Host1x::NvdecCommon::VideoCodec codec);
+
+    /// Call decoders to construct headers, decode AVFrame with ffmpeg
+    void Decode();
+
+    /// Returns next decoded frame
+    [[nodiscard]] AVFramePtr GetCurrentFrame();
+
+    /// Returns the value of current_codec
+    [[nodiscard]] Host1x::NvdecCommon::VideoCodec GetCurrentCodec() const;
+
+    /// Return name of the current codec
+    [[nodiscard]] std::string_view GetCurrentCodecName() const;
+
+private:
+    void InitializeAvCodecContext();
+
+    void InitializeGpuDecoder();
+
+    bool CreateGpuAvDevice();
+
+    bool initialized{};
+    Host1x::NvdecCommon::VideoCodec current_codec{Host1x::NvdecCommon::VideoCodec::None};
+
+    const AVCodec* av_codec{nullptr};
+    AVCodecContext* av_codec_ctx{nullptr};
+    AVBufferRef* av_gpu_decoder{nullptr};
+
+    GPU& gpu;
+    const Host1x::NvdecCommon::NvdecRegisters& state;
+    std::unique_ptr<Decoder::H264> h264_decoder;
+    std::unique_ptr<Decoder::VP8> vp8_decoder;
+    std::unique_ptr<Decoder::VP9> vp9_decoder;
+
+    std::queue<AVFramePtr> av_frames{};
+};
+
+} // namespace Tegra