to_image_format()

std::optional< Portal::Graphics::ImageFormat > MayaFlux::IO::to_image_format

(

int

av_pixel_format

)

Map an AVPixelFormat to the Portal ImageFormat backing it.

Covers the formats a container can store. Returns nullopt for anything without a direct equivalent, including planar YUV and packed 24-bit layouts that swscale must convert before a container sees them.

Parameters

av_pixel_format

AVPixelFormat as int; negative means RGBA.

Definition at line 489 of file VideoStreamContext.cpp.

{
    using Portal::Graphics::ImageFormat;
 
    if (av_pixel_format < 0)
        return ImageFormat::RGBA8;
 
    switch (static_cast<AVPixelFormat>(av_pixel_format)) {
    case AV_PIX_FMT_RGBA:
        return ImageFormat::RGBA8;
    case AV_PIX_FMT_BGRA:
        return ImageFormat::BGRA8;
    case AV_PIX_FMT_RGBA64LE:
        return ImageFormat::RGBA16;
    case AV_PIX_FMT_GRAYF32LE:
        return ImageFormat::R32F;
    case AV_PIX_FMT_RGB24:
        return ImageFormat::RGB8;
    case AV_PIX_FMT_GRAY8:
        return ImageFormat::R8;
    case AV_PIX_FMT_GRAY16LE:
        return ImageFormat::R16;
    default:
        return std::nullopt;
    }
}

Referenced by MayaFlux::IO::CameraReader::create_container(), and MayaFlux::IO::VideoFileReader::load_into_container().

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