LibavEncoderNode.hpp

#pragma once
#include <Gfx/Graph/OutputNode.hpp>
#include <Gfx/Graph/encoders/GPUVideoEncoder.hpp>
#include <Gfx/InvertYRenderer.hpp>
#include <Gfx/Libav/LibavOutputSettings.hpp>
 
#include <cstdint>
#include <vector>
 
namespace Gfx
{
struct LibavEncoder;
struct LibavEncoderNode : score::gfx::OutputNode
{
  explicit LibavEncoderNode(
      const LibavOutputSettings&, LibavEncoder& encoder, int stream);
  virtual ~LibavEncoderNode();
 
  LibavEncoder& encoder;
  int stream{};
 
  std::weak_ptr<score::gfx::RenderList> m_renderer{};
  QRhiTexture* m_texture{};
  score::gfx::TextureRenderTarget m_renderTarget;
  std::shared_ptr<score::gfx::RenderState> m_renderState{};
 
  // GPU encoder for YUV conversion (if target is not RGBA)
  std::unique_ptr<score::gfx::GPUVideoEncoder> m_encoder[2];
  int m_encoderIdx{};
 
  // Double-buffered readback for RGBA path (NDI pattern)
  QRhiReadbackResult m_readback[2];
  QRhiReadbackResult* m_currentReadback{&m_readback[0]};
  Gfx::InvertYRenderer* m_inv_y_renderer{};
 
  // 10-bit target codec with no 8-bit GPU encoder: render RGBA16F and feed
  // libav RGBA64 (real >8-bit precision) instead of the RGBA8 fast path.
  bool m_tenBit{};
  std::vector<uint16_t> m_rgba64;
 
  void startRendering() override;
  void onRendererChange() override;
  void render() override;
  bool canRender() const override;
  void stopRendering() override;
 
  void setRenderer(std::shared_ptr<score::gfx::RenderList> r) override;
  score::gfx::RenderList* renderer() const override;
 
  void createOutput(score::gfx::OutputConfiguration) override;
  void destroyOutput() override;
 
  std::shared_ptr<score::gfx::RenderState> renderState() const override;
  score::gfx::OutputNodeRenderer*
  createRenderer(score::gfx::RenderList& r) const noexcept override;
  Configuration configuration() const noexcept override;
 
  LibavOutputSettings m_settings;
};
}