struct video_frame *
vidcap_aggregate_grab(void *state, struct audio_frame **audio)
{
struct vidcap_aggregate_state *s = (struct vidcap_aggregate_state *) state;
struct audio_frame *audio_frame;
struct video_frame *frame = NULL;
int i;
while(!frame) {
frame = vidcap_grab(s->devices[0], &audio_frame);
}
s->frame->color_spec = frame->color_spec;
s->frame->interlacing = frame->interlacing;
s->frame->fps = frame->fps;
vf_get_tile(s->frame, 0)->width = vf_get_tile(frame, 0)->width;
vf_get_tile(s->frame, 0)->height = vf_get_tile(frame, 0)->height;
vf_get_tile(s->frame, 0)->data_len = vf_get_tile(frame, 0)->data_len;
vf_get_tile(s->frame, 0)->data = vf_get_tile(frame, 0)->data;
if(audio_frame) {
*audio = audio_frame;
} else {
*audio = NULL;
}
for(i = 1; i < s->devices_cnt; ++i) {
while(!frame) {
frame = vidcap_grab(s->devices[0], &audio_frame);
}
if(frame->color_spec != s->frame->color_spec ||
frame->fps != s->frame->fps ||
frame->interlacing != s->frame->interlacing) {
fprintf(stderr, "[aggregate] Different format detected: ");
if(frame->color_spec != s->frame->color_spec)
fprintf(stderr, "codec");
if(frame->interlacing != s->frame->interlacing)
fprintf(stderr, "interlacing");
if(frame->fps != s->frame->fps)
fprintf(stderr, "FPS");
fprintf(stderr, "\n");
return NULL;
}
vf_get_tile(s->frame, i)->width = vf_get_tile(frame, 0)->width;
vf_get_tile(s->frame, i)->height = vf_get_tile(frame, 0)->height;
vf_get_tile(s->frame, i)->data_len = vf_get_tile(frame, 0)->data_len;
vf_get_tile(s->frame, i)->data = vf_get_tile(frame, 0)->data;
}
s->frames++;
gettimeofday(&s->t, NULL);
double seconds = tv_diff(s->t, s->t0);
if (seconds >= 5) {
float fps = s->frames / seconds;
fprintf(stderr, "[aggregate cap.] %d frames in %g seconds = %g FPS\n", s->frames, seconds, fps);
s->t0 = s->t;
s->frames = 0;
}
return s->frame;
}
static struct video_frame *
vidcap_aggregate_grab(void *state, struct audio_frame **audio)
{
struct vidcap_aggregate_state *s = (struct vidcap_aggregate_state *) state;
struct audio_frame *audio_frame = NULL;
struct video_frame *frame = NULL;
for (int i = 0; i < s->devices_cnt; ++i) {
VIDEO_FRAME_DISPOSE(s->captured_frames[i]);
}
*audio = NULL;
for (int i = 0; i < s->devices_cnt; ++i) {
frame = NULL;
while(!frame) {
frame = vidcap_grab(s->devices[i], &audio_frame);
}
if (i == 0) {
s->frame->color_spec = frame->color_spec;
s->frame->interlacing = frame->interlacing;
s->frame->fps = frame->fps;
}
if (s->audio_source_index == -1 && audio_frame != NULL) {
fprintf(stderr, "[aggregate] Locking device #%d as an audio source.\n",
i);
s->audio_source_index = i;
}
if (s->audio_source_index == i) {
*audio = audio_frame;
}
if (frame->color_spec != s->frame->color_spec ||
frame->fps != s->frame->fps ||
frame->interlacing != s->frame->interlacing) {
fprintf(stderr, "[aggregate] Different format detected: ");
if(frame->color_spec != s->frame->color_spec)
fprintf(stderr, "codec");
if(frame->interlacing != s->frame->interlacing)
fprintf(stderr, "interlacing");
if(frame->fps != s->frame->fps)
fprintf(stderr, "FPS (%.2f and %.2f)", frame->fps, s->frame->fps);
fprintf(stderr, "\n");
return NULL;
}
vf_get_tile(s->frame, i)->width = vf_get_tile(frame, 0)->width;
vf_get_tile(s->frame, i)->height = vf_get_tile(frame, 0)->height;
vf_get_tile(s->frame, i)->data_len = vf_get_tile(frame, 0)->data_len;
vf_get_tile(s->frame, i)->data = vf_get_tile(frame, 0)->data;
s->captured_frames[i] = frame;
}
s->frames++;
gettimeofday(&s->t, NULL);
double seconds = tv_diff(s->t, s->t0);
if (seconds >= 5) {
float fps = s->frames / seconds;
log_msg(LOG_LEVEL_INFO, "[aggregate cap.] %d frames in %g seconds = %g FPS\n", s->frames, seconds, fps);
s->t0 = s->t;
s->frames = 0;
}
return s->frame;
}
