Function convertRGBA4ToFormat

core/renderer/backend/PixelFormatUtils.cpp:761–793

}

static ax::backend::PixelFormat convertRGBA4ToFormat(const unsigned char* data,
                                                   size_t dataLen,
                                                   PixelFormat format,
                                                   unsigned char** outData,
                                                   size_t* outDataLen)
{
    switch (format)
    {
    case PixelFormat::RGBA8:
        *outDataLen = dataLen / 2 * 4;
        *outData    = (unsigned char*)malloc(sizeof(unsigned char) * (*outDataLen));
        convertRGBA4ToRGBA8(data, dataLen, *outData);
        break;
    case PixelFormat::RGBA4:
        *outDataLen = dataLen;
        *outData    = (unsigned char*)data;
        break;
    default:
        // unsupported conversion or don't need to convert
        if (format != PixelFormat::RGBA8)
        {
            AXLOGW(
                "Can not convert image format PixelFormat::RGBA444 to format ID:{}, we will use it's origin format "
                "PixelFormat::RGBA4",
                static_cast<int>(format));
        }
        *outData    = (unsigned char*)data;
        *outDataLen = dataLen;
        return PixelFormat::RGBA8;
    }

    return format;
}

static PixelFormat convertBGRA8ToFormat(const unsigned char* data,
                                 size_t dataLen,