FFMPEG logging

ffmpeg-log.cpp

// av_log_set_callback(ffmpeg_avcodec_log);

static void ffmpeg_avcodec_log(void *ptr, int val, const char * msg, va_list
	ap)
{
	AVClass* avc = ptr ? *(AVClass**)ptr : NULL;

	FILE *flog = fopen("stream-receiver.log", "a");
	if (avc)
	{
		fprintf(flog, "[%s @ %p] ", avc->item_name(ptr), avc);
	}
	vfprintf(flog, msg, ap);
	fclose(flog);
}