10 void check_frame_stability(uint16_t timecode,
11 FrameAllocator::Frame video_frame, size_t video_offset, VideoFormat video_format,
12 FrameAllocator::Frame audio_frame, size_t audio_offset, AudioFormat audio_format)
14 //printf("0x%04x: %d video bytes (format 0x%04x), %d audio bytes (format 0x%04x)\n",
15 // timecode, video_end - video_start, video_format.id, audio_end - audio_start, audio_format.id);
17 static uint16_t last_timecode = 0;
18 static size_t last_video_bytes = 0;
19 static size_t last_audio_bytes = 0;
21 if (!(last_timecode == 0 && last_video_bytes == 0 && last_audio_bytes == 0)) {
22 if (timecode != (uint16_t)(last_timecode + 1)) {
23 printf("0x%04x: Dropped %d frames\n", timecode, timecode - last_timecode - 1);
24 } else if (last_video_bytes != video_frame.len - video_offset) {
25 printf("0x%04x: Video frame size changed (old=%ld, cur=%ld)\n", timecode,
26 last_video_bytes, video_frame.len - video_offset);
27 } else if (last_audio_bytes != audio_frame.len - audio_offset) {
28 printf("0x%04x: Audio block size changed (old=%ld, cur=%ld)\n", timecode,
29 last_audio_bytes, audio_frame.len - audio_offset);
32 last_timecode = timecode;
33 last_video_bytes = video_frame.len - video_offset;
34 last_audio_bytes = audio_frame.len - audio_offset;
36 usb->get_video_frame_allocator()->release_frame(video_frame);
37 usb->get_audio_frame_allocator()->release_frame(audio_frame);
40 int main(int argc, char **argv)
42 usb = new BMUSBCapture(0); // First card.
43 usb->set_frame_callback(check_frame_stability);
44 usb->configure_card();
45 BMUSBCapture::start_bm_thread();
46 usb->start_bm_capture();