Impala Documentation

bool Impala::Core::Stream::Lavc::VideoAccessObject::InitFrames ( ) [inline, private]

Definition at line 771 of file VideoAccessObject.h.

References ILOG_ERROR, mFrame, mPacket, mRgbBuffer, mRgbBufferSize, mRgbFrame, mSrcAddress, and mVideoCodecCtx.

00772     {
00773         mPacket = new AVPacket;
00774         mPacket->data = 0;
00775 
00776         // Allocate frame for reading
00777         mFrame = avcodec_alloc_frame();
00778 
00779         // Allocate frame for RGB conversion
00780         mRgbFrame = avcodec_alloc_frame();
00781 
00782         if ((mFrame == NULL) || (mRgbFrame == NULL)) 
00783         {
00784             ILOG_ERROR("Could not allocate frame memory for: " << mSrcAddress);
00785             return false;
00786         }
00787 
00788         // allocate buffer to hold frame data converted to RGB;
00789         // (note the comments in avcodec.h for avpicture_get_size)
00790         mRgbBufferSize = avpicture_fill( (AVPicture*) mRgbFrame, 
00791             NULL, PIX_FMT_RGB24, mVideoCodecCtx->width, mVideoCodecCtx->height);
00792         mRgbBuffer = new UInt8[mRgbBufferSize];
00793         //ClearRgbBuffer();
00794 
00795         // Assign appropriate parts of buffer to image planes in mRgbFrame
00796         int result = avpicture_fill( (AVPicture*) mRgbFrame, 
00797             mRgbBuffer, PIX_FMT_RGB24, mVideoCodecCtx->width, mVideoCodecCtx->height);
00798 
00799         return true;
00800     }