YUV缓冲区的内存分配以转换为RGB

Question

I'm facing issue on few android devices while copying the data from DecodeFrame2()

This is my code:

uint8_t* m_yuvData[3];
SBufferInfo yuvDataInfo;
memset(&yuvDataInfo, 0, sizeof(SBufferInfo));
m_yuvData[0] = NULL;
m_yuvData[1] = NULL;
m_yuvData[2] = NULL;
DECODING_STATE decodingState = m_decoder->DecodeFrame2(bufferData, bufferDataSize, m_yuvData, &yuvDataInfo);

if(yuvDataInfo.iBufferStatus == 1)
{
        int yStride = yuvDataInfo->UsrData.sSystemBuffer.iStride[0];
        int uvStride = yuvDataInfo->UsrData.sSystemBuffer.iStride[1];
        uint32_t width = yuvDataInfo->UsrData.sSystemBuffer.iWidth;
       uint32_t height = yuvDataInfo->UsrData.sSystemBuffer.iHeight;
       size_t yDataSize = (width * height) + (height * yStride);
       size_t uvDataSize = (((width * height) / 4) + (height * uvStride));
        size_t requiredSize = yDataSize + (2 * uvDataSize);
        uint8_t* yuvBufferedData = (uint8_t*)malloc(requiredSize);
        // when i move yuvData[0] to another location i am getting crash.
         memcpy(yuvBufferedData, yuvData[0], yDataSize);
         memcpy(yuvBufferedData + yDataSize, yuvData[1], uvDataSize);
        memcpy(yuvBufferedData + yDataSize + uvDataSize, yuvData[2], uvDataSize);
  }

The above code snippet is working on high end android devices. but on few android devices after processing first frame, second frame onwards i am getting crash in first memcpy() statement.

What is wrong in this code? and how to calculate the buffer size from the output of DecodeFrame2(). If i process alternative frames(instead of 30, just 15 frames alternative ones), it is copying fine.

Please help me to fix this?

Answer 1

基于上述公式，yDataSize和uvDataSize非常大，此问题已通过修改大小来解决。