// TODO: gets formats for cameras, when a format returns a range it gets
// in steps /2 and *2 from min to max and max to min, for format7 it should be free to get any size
static void get_supported_video_formats (ofGstDevice &webcam_device, GstCaps &caps, int desired_framerate)
{
int num_structures;
num_structures = gst_caps_get_size (&caps);
for (int i = 0; i < num_structures; i++){
GstStructure *structure;
const GValue *width, *height;
structure = gst_caps_get_structure (&caps, i);
width = gst_structure_get_value (structure, "width");
height = gst_structure_get_value (structure, "height");
if (G_VALUE_HOLDS_INT (width)){
ofGstVideoFormat video_format;
video_format.mimetype = gst_structure_get_name (structure);
gst_structure_get_int (structure, "width", &(video_format.width));
gst_structure_get_int (structure, "height", &(video_format.height));
add_video_format(webcam_device, video_format, *structure, desired_framerate);
}else if (GST_VALUE_HOLDS_INT_RANGE (width)){
int min_width, max_width, min_height, max_height;
int cur_width, cur_height;
min_width = gst_value_get_int_range_min (width);
max_width = gst_value_get_int_range_max (width);
min_height = gst_value_get_int_range_min (height);
max_height = gst_value_get_int_range_max (height);
cur_width = min_width;
cur_height = min_height;
while (cur_width <= max_width && cur_height <= max_height){
ofGstVideoFormat video_format;
video_format.mimetype = gst_structure_get_name (structure);
video_format.width = cur_width;
video_format.height = cur_height;
add_video_format(webcam_device, video_format, *structure, desired_framerate);
cur_width *= 2;
cur_height *= 2;
}
cur_width = max_width;
cur_height = max_height;
while (cur_width > min_width && cur_height > min_height){
ofGstVideoFormat video_format;
video_format.mimetype = gst_structure_get_name (structure);
video_format.width = cur_width;
video_format.height = cur_height;
add_video_format(webcam_device, video_format, *structure, desired_framerate);
cur_width /= 2;
cur_height /= 2;
}
}else{
ofLog(OF_LOG_ERROR, "unknown GValue type %s, for resolution width", G_VALUE_TYPE_NAME (width));
}
}
}
// TODO: gets formats for cameras, when a format return a range it gets
// in steps /2 and *2 from min to max, for format7 it should be free to get any size
static void
get_supported_video_formats (ofGstDevice &webcam_device, GstCaps &caps)
{
int i;
int num_structures;
num_structures = gst_caps_get_size (&caps);
for (i = 0; i < num_structures; i++)
{
GstStructure *structure;
const GValue *width, *height;
structure = gst_caps_get_structure (&caps, i);
width = gst_structure_get_value (structure, "width");
height = gst_structure_get_value (structure, "height");
if (G_VALUE_HOLDS_INT (width))
{
ofGstVideoFormat * video_format = new ofGstVideoFormat;
video_format->mimetype = g_strdup (gst_structure_get_name (structure));
gst_structure_get_int (structure, "width", &(video_format->width));
gst_structure_get_int (structure, "height", &(video_format->height));
add_video_format(webcam_device, video_format, *structure);
}
else if (GST_VALUE_HOLDS_INT_RANGE (width))
{
int min_width, max_width, min_height, max_height;
int cur_width, cur_height;
min_width = gst_value_get_int_range_min (width);
max_width = gst_value_get_int_range_max (width);
min_height = gst_value_get_int_range_min (height);
max_height = gst_value_get_int_range_max (height);
cur_width = min_width;
cur_height = min_height;
/* Gstreamer will sometimes give us a range with min_xxx == max_xxx,
we use <= here (and not below) to make this work */
while (cur_width <= max_width && cur_height <= max_height)
{
ofGstVideoFormat * video_format = new ofGstVideoFormat;
video_format->mimetype = g_strdup (gst_structure_get_name (structure));
video_format->width = cur_width;
video_format->height = cur_height;
add_video_format(webcam_device, video_format, *structure);
cur_width *= 2;
cur_height *= 2;
}
cur_width = max_width;
cur_height = max_height;
while (cur_width > min_width && cur_height > min_height)
{
ofGstVideoFormat * video_format = new ofGstVideoFormat;
video_format->mimetype = g_strdup (gst_structure_get_name (structure));
video_format->width = cur_width;
video_format->height = cur_height;
add_video_format(webcam_device, video_format, *structure);
cur_width /= 2;
cur_height /= 2;
}
}
else
{
g_critical ("GValue type %s, cannot be handled for resolution width", G_VALUE_TYPE_NAME (width));
}
}
/* Sort the format array (so that it will show sorted in the resolution
selection GUI), and rebuild the hashtable (as that will be invalid after
the sorting) */
sort (webcam_device.video_formats.begin(), webcam_device.video_formats.end(), resolution_compare);
g_hash_table_remove_all (webcam_device.supported_resolutions);
for (i = 0; i < webcam_device.num_video_formats; i++) {
ofGstVideoFormat * format = webcam_device.video_formats[i];
g_hash_table_insert (webcam_device.supported_resolutions,
g_strdup_printf ("%ix%i", format->width,
format->height),
GINT_TO_POINTER(i + 1));
}
}
