static gpointer
buffer_thread (UcaCamera *camera)
{
UcaCameraClass *klass;
GError *error = NULL;
klass = UCA_CAMERA_GET_CLASS (camera);
while (!camera->priv->cancelling_recording) {
gpointer buffer;
buffer = uca_ring_buffer_get_write_pointer (camera->priv->ring_buffer);
if (!(*klass->grab) (camera, buffer, &error))
break;
uca_ring_buffer_write_advance (camera->priv->ring_buffer);
}
return error;
}
static GError *
record_frames (UcaCamera *camera, Options *opts)
{
guint roi_width;
guint roi_height;
guint bits;
guint pixel_size;
gsize size;
gint n_frames;
guint n_allocated;
GTimer *timer;
UcaRingBuffer *buffer;
GError *error = NULL;
gdouble last_printed;
g_object_get (G_OBJECT (camera),
"roi-width", &roi_width,
"roi-height", &roi_height,
"sensor-bitdepth", &bits,
NULL);
pixel_size = get_bytes_per_pixel (bits);
size = roi_width * roi_height * pixel_size;
n_allocated = opts->n_frames > 0 ? opts->n_frames : 256;
buffer = uca_ring_buffer_new (size, n_allocated);
timer = g_timer_new();
g_print("Start recording: %ix%i at %i bits/pixel\n",
roi_width, roi_height, bits);
uca_camera_start_recording(camera, &error);
if (error != NULL)
return error;
n_frames = 0;
g_timer_start(timer);
last_printed = 0.0;
while (1) {
gdouble elapsed;
uca_camera_grab (camera, uca_ring_buffer_get_write_pointer (buffer), &error);
uca_ring_buffer_write_advance (buffer);
if (error != NULL)
return error;
n_frames++;
elapsed = g_timer_elapsed (timer, NULL);
if (n_frames == opts->n_frames || (opts->duration > 0.0 && elapsed >= opts->duration))
break;
if (elapsed - last_printed >= 1.0) {
g_print ("Recorded %i frames at %.2f frames/s\n",
n_frames, n_frames / elapsed);
last_printed = elapsed;
}
}
g_print ("Stop recording: %3.2f frames/s\n",
n_frames / g_timer_elapsed (timer, NULL));
uca_camera_stop_recording (camera, &error);
#ifdef HAVE_LIBTIFF
if (opts->write_tiff)
write_tiff (buffer, opts, roi_width, roi_height, bits);
else
write_raw (buffer, opts);
#else
write_raw (buffer, opts);
#endif
g_object_unref (buffer);
g_timer_destroy (timer);
return error;
}
