Determining size of data[0] in AVFrame of FFMPEG

Question

I am trying to allocate AVFrame->data[0] of a video frame to uint8_t* buffer using the following lines of code :

size_t sizeOfFrameData = mpAVFrameInput->linesize[0] * mpAVFrameInput->height;
        
memcpy(mFrameData, mpAVFrameInput->data[0], sizeOfFrameData);

I would like to know if this is a correct way of copying frame data to uint8_t* variable in FFMPEG?

Answer 1

To get the buffer size:

int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);

To copy pixel data:

int avpicture_layout(const AVPicture *src, enum AVPixelFormat pix_fmt,
                     int width, int height,
                     unsigned char *dest, int dest_size);