2.从DVSDK 的demo代码中ColorSpace_getBpp,其将以上YUV422/YUV420的bit位宽都定义为8 疑问:这是为什么呢? Int ColorSpace_getBpp(ColorSpace_Type colorSpace) { Int bpp; switch (colorSpace) { case ColorSpace_RGB888: bpp = 32; break; case ColorSpace_YUV444P: bpp = 24; break; ...
这个格式跟YUV422 Planar 类似,但对于Cb和Cr的采样在水平和垂直方向都减少为2:1,如下图 ffmpeg 中定义 PIX_FMT_YUV420P //< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples) android OMX 中定义 OMX_COLOR_FormatYUV420Planar // * YUV420Planar : Three arrays Y,U,V 3.YUV...
这个格式跟YUV422 Planar 类似,但对于Cb和Cr的采样在水平和垂直方向都减少为2:1,如下图 ffmpeg 中定义 PIX_FMT_YUV420P //< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples) android OMX 中定义 OMX_COLOR_FormatYUV420Planar // * YUV420Planar : Three arrays Y,U,V 3.YUV...
computeBPP( ipuTask.output.format ) / 8;// set the amount of memory needed for the task output ipuTask.output.paddr = iOutputSize;// allocate memory for the output image and check for failure // (NOTE: output.paddr will be replaced with the physical address) ...
在UVC项目中需要测试MJPEG的传输, 通常JPG使用的是YUV420采样压缩,恰好有个UVC的显示设备不支持YUV420采样压缩,只支持YUV422采样压缩,所以需要生成YUV422采样压缩的JPG文件用于测试。于是使用libjpeg代码库生成。这里使用libjpeg-turbo,相对官方的libjpeg,其使用了SIMD进行了速度优化,并且进一步封装了接口,接口更简洁更方便...
If the sensor delivers 10bpp, it will be packed in 16bit litle endian. You need to convert to big endian prior to debayer it. : need auto or manual control exposure & gain. Auto is taken care by *.xml file Dynamic can be done via /opt/imx8-isp/bin/v...
computeBPP( ipuTask.input.format ) / 8; // set the amount of memory needed for the task input ipuTask.input.paddr = iInputSize; // allocate memory for the input image and check for failure // (NOTE: input.paddr will be replaced with the physical address) ...
computeBPP( ipuTask.output.format ) / 8;// set the amount of memory needed for the task output ipuTask.output.paddr = iOutputSize;// allocate memory for the output image and check for failure // (NOTE: output.paddr will be replaced with the physical address) iRetValue = ...
YUV420:12bit 2.从DVSDK 的demo代码中ColorSpace_getBpp,其将以上YUV422/YUV420的bit位宽都定义为8 疑问:这是为什么呢? Int ColorSpace_getBpp(ColorSpace_Type colorSpace) { Int bpp; switch (colorSpace) { case ColorSpace_RGB888: bpp = 32; ...