Function convertDataToFormat

core/renderer/backend/PixelFormatUtils.cpp:831–871

convert map: 1.PixelFormat::RGBA8 2.PixelFormat::RGB8 3.PixelFormat::RGB565 4.PixelFormat::R8 5.PixelFormat::RG8 6.PixelFormat::RGBA4 7.PixelFormat::RGB5A1 gray(5) -> 1235678 gray alpha(6) -> 12345678 rgb(2) -> 1235678 rgba(1) -> 12345678 */

 */
ax::backend::PixelFormat convertDataToFormat(const unsigned char* data,
                                                  size_t dataLen,
                                                  PixelFormat originFormat,
                                                  PixelFormat format,
                                                  unsigned char** outData,
                                                  size_t* outDataLen)
{
    // don't need to convert
    if (format == originFormat)
    {
        *outData    = (unsigned char*)data;
        *outDataLen = dataLen;
        return originFormat;
    }

    switch (originFormat)
    {
    case PixelFormat::R8:
        return convertR8ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::RG8:
        return convertRG8ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::RGB8:
        return convertRGB8ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::RGBA8:
        return convertRGBA8ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::RGB5A1:
        return convertRGB5A1ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::RGB565:
        return convertRGB565ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::RGBA4:
        return convertRGBA4ToFormat(data, dataLen, format, outData, outDataLen);
    case PixelFormat::BGRA8:
        return convertBGRA8ToFormat(data, dataLen, format, outData, outDataLen);
    default:
        AXLOGW("unsupported conversion from format {} to format {}", static_cast<int>(originFormat),
              static_cast<int>(format));
        *outData    = (unsigned char*)data;
        *outDataLen = dataLen;
        return originFormat;
    }
}
}  // namespace PixelFormatUtils
}  // namespace backend