C++ (Cpp) streamGetFrame Examples

Example #1

File: VideoSourceImages.cpp Project: fishman/virtualdub

const void *VideoSourceImages::getFrame(VDPosition frameNum) {
	uint32 lBytes;
	const void *pFrame = NULL;

	if (mCachedFrame == frameNum)
		return mpFrameBuffer;

	if (!read(frameNum, 1, NULL, 0x7FFFFFFF, &lBytes, NULL) && lBytes) {
		char *pBuffer = new char[lBytes];

		try {
			uint32 lReadBytes;

			read(frameNum, 1, pBuffer, lBytes, &lReadBytes, NULL);
			pFrame = streamGetFrame(pBuffer, lReadBytes, FALSE, frameNum, frameNum);
		} catch(MyError e) {
			delete[] pBuffer;
			throw;
		}

		delete[] pBuffer;
	}

	return pFrame;
}

Example #2

File: InputFileFLM.cpp Project: KGE-INC/VirtualDub

const void *VDVideoSourceFLM::getFrame(VDPosition frameNum) {
	uint32 lBytes;
	const void *pFrame = NULL;

	if (mCachedFrame == frameNum)
		return mpFrameBuffer;

	if (!read(frameNum, 1, NULL, 0x7FFFFFFF, &lBytes, NULL) && lBytes) {
		vdblock<char> buffer(lBytes);
		uint32 lReadBytes;

		read(frameNum, 1, buffer.data(), lBytes, &lReadBytes, NULL);
		pFrame = streamGetFrame(buffer.data(), lReadBytes, FALSE, frameNum, frameNum);
	}

	return pFrame;
}