score::gfx::RGB24Decoder Struct Reference

Inheritance diagram for score::gfx::RGB24Decoder:

Public Member Functions
	RGB24Decoder (Video::ImageFormat &d, QString f="")
std::pair< QShader, QShader >	init (RenderList &r) override
	Initialize a GPUVideoDecoder. More...
void	exec (RenderList &, QRhiResourceUpdateBatch &res, AVFrame &frame) override
	Decode and upload a video frame to the GPU.
void	setPixels (QRhiResourceUpdateBatch &res, uint8_t *pixels, int stride) const noexcept
Public Member Functions inherited from score::gfx::GPUVideoDecoder
void	release (RenderList &)
	This method will release all the created samplers and textures.

Public Attributes
QRhiTexture::Format	format
int	bytes_per_pixel {}
Video::ImageFormat &	decoder
QString	filter
Public Attributes inherited from score::gfx::GPUVideoDecoder
std::vector< Sampler >	samplers

Static Public Attributes
static constexpr const auto	rgb_filter

Additional Inherited Members
Static Public Member Functions inherited from score::gfx::GPUVideoDecoder
static QRhiTextureSubresourceUploadDescription	createTextureUpload (uint8_t *pixels, int w, int h, int bytesPerPixel, int stride)
	Utility method to create a QRhiTextureSubresourceUploadDescription. More...
static QString	vertexShader () noexcept

Member Function Documentation

init()

std::pair<QShader, QShader> score::gfx::RGB24Decoder::init ( RenderList &  r )

inlineoverridevirtual

Initialize a GPUVideoDecoder.

This method must :

• Create samplers and textures for the video format.
• Create shaders that will render the data put into these textures.

It returns a {vertex, fragment} shader pair.

Implements score::gfx::GPUVideoDecoder.

Member Data Documentation

rgb_filter

constexpr const auto score::gfx::RGB24Decoder::rgb_filter

staticconstexpr

Initial value:

= R"_(#version 450
 
)_" SCORE_GFX_VIDEO_UNIFORMS R"_(
 
    layout(binding=3) uniform sampler2D y_tex;
 
    layout(location = 0) in vec2 v_texcoord;
    layout(location = 0) out vec4 fragColor;
 
    vec4 processTexture(vec4 tex) {
      vec4 processed = tex;
      { %1 }
      return processed;
    }
 
    void main ()
    {
      float w = mat.texSz.x;
      float h = mat.texSz.y;
      int x = int(floor(v_texcoord.x * w) * 3.);
      int y = int(v_texcoord.y * h);
      float r = texelFetch(y_tex, ivec2(x + 0, y), 0).r;
      float g = texelFetch(y_tex, ivec2(x + 1, y), 0).r;
      float b = texelFetch(y_tex, ivec2(x + 2, y), 0).r;
      fragColor = processTexture(vec4(r, g, b, 1.));
    })_"

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The documentation for this struct was generated from the following file:

• RGBA.hpp