9 void check_frame_stability(uint16_t timecode,
10 FrameAllocator::Frame video_frame, size_t video_offset, uint16_t video_format,
11 FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format)
13 //printf("0x%04x: %d video bytes (format 0x%04x), %d audio bytes (format 0x%04x)\n",
14 // timecode, video_end - video_start, video_format, audio_end - audio_start, audio_format);
16 static uint16_t last_timecode = 0;
17 static size_t last_video_bytes = 0;
18 static size_t last_audio_bytes = 0;
20 if (!(last_timecode == 0 && last_video_bytes == 0 && last_audio_bytes == 0)) {
21 if (timecode != (uint16_t)(last_timecode + 1)) {
22 printf("0x%04x: Dropped %d frames\n", timecode, timecode - last_timecode - 1);
23 } else if (last_video_bytes != video_frame.len - video_offset) {
24 printf("0x%04x: Video frame size changed (old=%d, cur=%d)\n", timecode,
25 last_video_bytes, video_frame.len - video_offset);
26 } else if (last_audio_bytes != audio_frame.len - audio_offset) {
27 printf("0x%04x: Audio block size changed (old=%d, cur=%d)\n", timecode,
28 last_audio_bytes, audio_frame.len - audio_offset);
31 last_timecode = timecode;
32 last_video_bytes = video_frame.len - video_offset;
33 last_audio_bytes = audio_frame.len - audio_offset;
35 usb->get_video_frame_allocator()->release_frame(video_frame);
36 usb->get_audio_frame_allocator()->release_frame(audio_frame);
39 int main(int argc, char **argv)
41 usb = new BMUSBCapture;
42 usb->set_frame_callback(check_frame_stability);
43 usb->start_bm_capture();