void janus_close_video(janus_video video)
{
ppr_video_io_close((ppr_video_io_type)video);
}
/* Overlays bounding boxes and landmarks from tracks onto copies of the frames in the video */
void sdk_draw_utils_overlay_track_list_on_video(
const char *in_filename,
ppr_track_list_type track_list,
int min_confidence,
int overlay_frame_numbers,
const char *output_video_format)
{
int i;
int frame_num;
ppr_video_io_type input_video;
ppr_video_io_type output_video;
int frame_rate_numerator;
int frame_rate_denominator;
int *i_tracked_face_lists;
ppr_face_attributes_type face_attributes;
ppr_raw_image_type raw_image;
char title[FILENAME_MAX];
char out_filename[FILENAME_MAX];
/* Open video */
TRY_VIDEO(ppr_video_io_open(&input_video, in_filename));
TRY_VIDEO(ppr_video_io_get_frame_rate(input_video, &frame_rate_numerator, &frame_rate_denominator));
/* Create output video */
sdk_utils_get_file_title(in_filename, title);
sprintf(out_filename, "%s_track_overlay.%s", title, output_video_format);
TRY_VIDEO(ppr_video_io_create(&output_video, out_filename, BIT_RATE, frame_rate_numerator, frame_rate_denominator));
/* Create array of indices into tracked face arrays */
i_tracked_face_lists = (int*)malloc(track_list.length * sizeof(int));
sdk_utils_check_allocation(i_tracked_face_lists, "i_tracked_face_lists", __FUNCTION__);
for (i = 0; i < track_list.length; i++)
i_tracked_face_lists[i] = 0;
/* Loop through each frame of video */
frame_num = 0;
while (ppr_video_io_is_frame_available(input_video))
{
/* Read frame from video */
TRY_VIDEO(ppr_video_io_get_frame(input_video, &raw_image));
/* Overlay polygons on frame */
sdk_draw_utils_advance_indices_to_frame(track_list, i_tracked_face_lists, frame_num);
for (i = 0; i < track_list.length; i++)
{
ppr_get_face_attributes(track_list.tracks[i].tracked_faces.faces[i_tracked_face_lists[i]], &face_attributes);
if (face_attributes.tracking_info.frame_number == frame_num)
{
/* Overlay polygon for this face */
sdk_draw_utils_overlay_tracked_faces(&raw_image, 1, &track_list.tracks[i].tracked_faces.faces[i_tracked_face_lists[i]], min_confidence);
}
}
/* Overlay frame number on frame */
if (overlay_frame_numbers)
sdk_draw_utils_overlay_frame_number(&raw_image, frame_num);
/* Write frame to output video */
TRY_VIDEO(ppr_video_io_add_frame(output_video, raw_image));
/* Free frame */
ppr_raw_image_free(raw_image);
/* Advance to next frame */
TRY_VIDEO(ppr_video_io_step_forward(input_video));
frame_num++;
}
/* Close video */
TRY_VIDEO(ppr_video_io_close(input_video));
TRY_VIDEO(ppr_video_io_close(output_video));
/* Clean up */
free(i_tracked_face_lists);
}