static void
gst_aravis_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
switch (prop_id) {
case PROP_CAMERA_NAME:
g_value_set_string (value, gst_aravis->camera_name);
break;
case PROP_GAIN:
g_value_set_int (value, gst_aravis->gain);
break;
case PROP_EXPOSURE:
g_value_set_double (value, gst_aravis->exposure_time_us);
break;
case PROP_H_BINNING:
g_value_set_int (value, gst_aravis->h_binning);
break;
case PROP_V_BINNING:
g_value_set_int (value, gst_aravis->v_binning);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_aravis_finalize (GObject * object)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
if (gst_aravis->camera != NULL) {
g_object_unref (gst_aravis->camera);
gst_aravis->camera = NULL;
}
if (gst_aravis->stream != NULL) {
g_object_unref (gst_aravis->stream);
gst_aravis->stream = NULL;
}
if (gst_aravis->all_caps != NULL) {
gst_caps_unref (gst_aravis->all_caps);
gst_aravis->all_caps = NULL;
}
if (gst_aravis->fixed_caps != NULL) {
gst_caps_unref (gst_aravis->fixed_caps);
gst_aravis->fixed_caps = NULL;
}
g_free (gst_aravis->camera_name);
gst_aravis->camera_name = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_aravis_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
switch (prop_id) {
case PROP_CAMERA_NAME:
g_free (gst_aravis->camera_name);
/* check if we are currently active
prevent setting camera and other values to something not representing the active camera */
if (gst_aravis->stream == NULL) {
gst_aravis->camera_name = g_strdup (g_value_get_string (value));
gst_aravis_init_camera (gst_aravis);
}
GST_LOG_OBJECT (gst_aravis, "Set camera name to %s", gst_aravis->camera_name);
break;
case PROP_GAIN:
gst_aravis->gain = g_value_get_double (value);
if (gst_aravis->camera != NULL)
arv_camera_set_gain (gst_aravis->camera, gst_aravis->gain);
break;
case PROP_GAIN_AUTO:
gst_aravis->gain_auto = g_value_get_boolean (value);
if (gst_aravis->camera != NULL)
arv_camera_set_gain_auto (gst_aravis->camera, gst_aravis->gain_auto);
break;
case PROP_EXPOSURE:
gst_aravis->exposure_time_us = g_value_get_double (value);
if (gst_aravis->camera != NULL)
arv_camera_set_exposure_time (gst_aravis->camera, gst_aravis->exposure_time_us);
break;
case PROP_EXPOSURE_AUTO:
gst_aravis->exposure_auto = g_value_get_boolean (value);
if (gst_aravis->camera != NULL)
arv_camera_set_exposure_time_auto (gst_aravis->camera, gst_aravis->exposure_auto);
break;
case PROP_OFFSET_X:
gst_aravis->offset_x = g_value_get_int (value);
break;
case PROP_OFFSET_Y:
gst_aravis->offset_y = g_value_get_int (value);
break;
case PROP_H_BINNING:
gst_aravis->h_binning = g_value_get_int (value);
break;
case PROP_V_BINNING:
gst_aravis->v_binning = g_value_get_int (value);
break;
case PROP_PACKET_RESEND:
gst_aravis->packet_resend = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_aravis_start (GstBaseSrc *src)
{
GstAravis* gst_aravis = GST_ARAVIS(src);
GST_LOG_OBJECT (gst_aravis, "Open camera '%s'", gst_aravis->camera_name);
if (gst_aravis->camera == NULL)
gst_aravis_init_camera (gst_aravis);
gst_aravis->all_caps = gst_aravis_get_all_camera_caps (gst_aravis);
return TRUE;
}
static GstCaps *
gst_aravis_get_caps (GstBaseSrc * src)
{
GstAravis* gst_aravis = GST_ARAVIS(src);
GstCaps *caps;
if (gst_aravis->all_caps != NULL)
caps = gst_caps_copy (gst_aravis->all_caps);
else
caps = gst_caps_new_any ();
GST_LOG_OBJECT (gst_aravis, "Available caps = %" GST_PTR_FORMAT, caps);
return caps;
}
static void
gst_aravis_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
switch (prop_id) {
case PROP_CAMERA_NAME:
g_value_set_string (value, gst_aravis->camera_name);
break;
case PROP_CAMERA:
g_value_set_object (value, gst_aravis->camera);
break;
case PROP_GAIN:
g_value_set_double (value, gst_aravis->gain);
break;
case PROP_GAIN_AUTO:
g_value_set_boolean (value, gst_aravis->gain_auto);
break;
case PROP_EXPOSURE:
g_value_set_double (value, gst_aravis->exposure_time_us);
break;
case PROP_EXPOSURE_AUTO:
g_value_set_boolean (value, gst_aravis->exposure_auto);
break;
case PROP_OFFSET_X:
g_value_set_int (value, gst_aravis->offset_x);
break;
case PROP_OFFSET_Y:
g_value_set_int (value, gst_aravis->offset_y);
break;
case PROP_H_BINNING:
g_value_set_int (value, gst_aravis->h_binning);
break;
case PROP_V_BINNING:
g_value_set_int (value, gst_aravis->v_binning);
break;
case PROP_PACKET_RESEND:
g_value_set_boolean (value, gst_aravis->packet_resend);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_aravis_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
switch (prop_id) {
case PROP_CAMERA_NAME:
g_free (gst_aravis->camera_name);
gst_aravis->camera_name = g_strdup (g_value_get_string (value));
GST_LOG_OBJECT (gst_aravis, "Set camera name to %s", gst_aravis->camera_name);
break;
case PROP_GAIN:
gst_aravis->gain = g_value_get_int (value);
break;
case PROP_GAIN_AUTO:
gst_aravis->gain_auto = g_value_get_boolean (value);
break;
case PROP_EXPOSURE:
gst_aravis->exposure_time_us = g_value_get_double (value);
break;
case PROP_EXPOSURE_AUTO:
gst_aravis->exposure_auto = g_value_get_boolean (value);
break;
case PROP_OFFSET_X:
gst_aravis->offset_x = g_value_get_int (value);
break;
case PROP_OFFSET_Y:
gst_aravis->offset_y = g_value_get_int (value);
break;
case PROP_H_BINNING:
gst_aravis->h_binning = g_value_get_int (value);
break;
case PROP_V_BINNING:
gst_aravis->v_binning = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean gst_aravis_stop( GstBaseSrc * src )
{
GstAravis* gst_aravis = GST_ARAVIS(src);
arv_camera_stop_acquisition (gst_aravis->camera);
if (gst_aravis->stream != NULL) {
g_object_unref (gst_aravis->stream);
gst_aravis->stream = NULL;
}
if (gst_aravis->all_caps != NULL) {
gst_caps_unref (gst_aravis->all_caps);
gst_aravis->all_caps = NULL;
}
GST_DEBUG_OBJECT (gst_aravis, "Stop acquisition");
return TRUE;
}
static void
gst_aravis_fixate_caps (GstPad * pad, GstCaps * caps)
{
GstAravis *gst_aravis = GST_ARAVIS (gst_pad_get_parent_element (pad));
GstStructure *structure;
gint width;
gint height;
double frame_rate;
arv_camera_get_region (gst_aravis->camera, NULL, NULL, &width, &height);
frame_rate = arv_camera_get_frame_rate (gst_aravis->camera);
structure = gst_caps_get_structure (caps, 0);
gst_structure_fixate_field_nearest_int (structure, "width", width);
gst_structure_fixate_field_nearest_int (structure, "height", height);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", (double) (0.5 + frame_rate), 1);
GST_LOG_OBJECT (gst_aravis, "Fixate caps");
g_object_unref (gst_aravis);
}
static GstCaps *
gst_aravis_fixate_caps (GstBaseSrc * bsrc, GstCaps * caps)
{
GstAravis *gst_aravis = GST_ARAVIS (bsrc);
GstStructure *structure;
gint width;
gint height;
double frame_rate;
arv_camera_get_region (gst_aravis->camera, NULL, NULL, &width, &height);
frame_rate = arv_camera_get_frame_rate (gst_aravis->camera);
structure = gst_caps_get_structure (caps, 0);
gst_structure_fixate_field_nearest_int (structure, "width", width);
gst_structure_fixate_field_nearest_int (structure, "height", height);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", (double) (0.5 + frame_rate), 1);
GST_LOG_OBJECT (gst_aravis, "Fixate caps");
return GST_BASE_SRC_CLASS(gst_aravis_parent_class)->fixate(bsrc, caps);
}
static GstFlowReturn
gst_aravis_create (GstPushSrc * push_src, GstBuffer ** buffer)
{
GstAravis *gst_aravis;
ArvBuffer *arv_buffer;
gst_aravis = GST_ARAVIS (push_src);
do {
arv_buffer = arv_stream_timeout_pop_buffer (gst_aravis->stream, gst_aravis->buffer_timeout_us);
if (arv_buffer != NULL && arv_buffer->status != ARV_BUFFER_STATUS_SUCCESS)
arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
} while (arv_buffer != NULL && arv_buffer->status != ARV_BUFFER_STATUS_SUCCESS);
if (arv_buffer == NULL)
return GST_FLOW_ERROR;
*buffer = gst_buffer_new ();
GST_BUFFER_DATA (*buffer) = arv_buffer->data;
GST_BUFFER_MALLOCDATA (*buffer) = NULL;
GST_BUFFER_SIZE (*buffer) = gst_aravis->payload;
if (gst_aravis->timestamp_offset == 0) {
gst_aravis->timestamp_offset = arv_buffer->timestamp_ns;
gst_aravis->last_timestamp = arv_buffer->timestamp_ns;
}
GST_BUFFER_TIMESTAMP (*buffer) = arv_buffer->timestamp_ns - gst_aravis->timestamp_offset;
GST_BUFFER_DURATION (*buffer) = arv_buffer->timestamp_ns - gst_aravis->last_timestamp;
gst_aravis->last_timestamp = arv_buffer->timestamp_ns;
arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
gst_buffer_set_caps (*buffer, gst_aravis->fixed_caps);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_aravis_create (GstPushSrc * push_src, GstBuffer ** buffer)
{
GstAravis *gst_aravis;
ArvBuffer *arv_buffer;
int arv_row_stride;
int width, height;
char *buffer_data;
size_t buffer_size;
guint64 timestamp_ns;
gst_aravis = GST_ARAVIS (push_src);
do {
arv_buffer = arv_stream_timeout_pop_buffer (gst_aravis->stream, gst_aravis->buffer_timeout_us);
if (arv_buffer != NULL && arv_buffer_get_status (arv_buffer) != ARV_BUFFER_STATUS_SUCCESS)
arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
} while (arv_buffer != NULL && arv_buffer_get_status (arv_buffer) != ARV_BUFFER_STATUS_SUCCESS);
if (arv_buffer == NULL)
return GST_FLOW_ERROR;
*buffer = gst_buffer_new ();
buffer_data = (char *) arv_buffer_get_data (arv_buffer, &buffer_size);
arv_buffer_get_image_region (arv_buffer, NULL, NULL, &width, &height);
arv_row_stride = width * ARV_PIXEL_FORMAT_BIT_PER_PIXEL (arv_buffer_get_image_pixel_format (arv_buffer)) / 8;
timestamp_ns = arv_buffer_get_timestamp (arv_buffer);
/* Gstreamer requires row stride to be a multiple of 4 */
if ((arv_row_stride & 0x3) != 0) {
int gst_row_stride;
size_t size;
void *data;
int i;
gst_row_stride = (arv_row_stride & ~(0x3)) + 4;
size = height * gst_row_stride;
data = g_malloc (size);
for (i = 0; i < height; i++)
memcpy (((char *) data) + i * gst_row_stride, buffer_data + i * arv_row_stride, arv_row_stride);
GST_BUFFER_DATA (buffer) = data;
GST_BUFFER_MALLOCDATA (buffer) = data;
GST_BUFFER_SIZE (buffer) = size;
} else {
GST_BUFFER_DATA (*buffer) = buffer_data;
GST_BUFFER_MALLOCDATA (*buffer) = NULL;
GST_BUFFER_SIZE (*buffer) = buffer_size;
}
if (!gst_base_src_get_do_timestamp(GST_BASE_SRC(push_src))) {
if (gst_aravis->timestamp_offset == 0) {
gst_aravis->timestamp_offset = timestamp_ns;
gst_aravis->last_timestamp = timestamp_ns;
}
GST_BUFFER_TIMESTAMP (*buffer) = timestamp_ns - gst_aravis->timestamp_offset;
GST_BUFFER_DURATION (*buffer) = timestamp_ns - gst_aravis->last_timestamp;
gst_aravis->last_timestamp = timestamp_ns;
}
arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
gst_buffer_set_caps (*buffer, gst_aravis->fixed_caps);
return GST_FLOW_OK;
}
static gboolean
gst_aravis_set_caps (GstBaseSrc *src, GstCaps *caps)
{
GstAravis* gst_aravis = GST_ARAVIS(src);
GstStructure *structure;
ArvPixelFormat pixel_format;
int height, width;
int bpp, depth;
const GValue *frame_rate;
const char *caps_string;
unsigned int i;
guint32 fourcc;
GST_LOG_OBJECT (gst_aravis, "Requested caps = %" GST_PTR_FORMAT, caps);
arv_camera_stop_acquisition (gst_aravis->camera);
if (gst_aravis->stream != NULL)
g_object_unref (gst_aravis->stream);
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
frame_rate = gst_structure_get_value (structure, "framerate");
gst_structure_get_int (structure, "bpp", &bpp);
gst_structure_get_int (structure, "depth", &depth);
if (gst_structure_get_field_type (structure, "format") == G_TYPE_STRING) {
const char *string;
string = gst_structure_get_string (structure, "format");
fourcc = GST_STR_FOURCC (string);
} else if (gst_structure_get_field_type (structure, "format") == GST_TYPE_FOURCC) {
gst_structure_get_fourcc (structure, "format", &fourcc);
} else
fourcc = 0;
pixel_format = arv_pixel_format_from_gst_0_10_caps (gst_structure_get_name (structure), bpp, depth, fourcc);
arv_camera_set_region (gst_aravis->camera, gst_aravis->offset_x, gst_aravis->offset_y, width, height);
arv_camera_set_binning (gst_aravis->camera, gst_aravis->h_binning, gst_aravis->v_binning);
arv_camera_set_pixel_format (gst_aravis->camera, pixel_format);
if (frame_rate != NULL) {
double dbl_frame_rate;
dbl_frame_rate = (double) gst_value_get_fraction_numerator (frame_rate) /
(double) gst_value_get_fraction_denominator (frame_rate);
GST_DEBUG_OBJECT (gst_aravis, "Frame rate = %g Hz", dbl_frame_rate);
arv_camera_set_frame_rate (gst_aravis->camera, dbl_frame_rate);
if (dbl_frame_rate > 0.0)
gst_aravis->buffer_timeout_us = MAX (GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT,
3e6 / dbl_frame_rate);
else
gst_aravis->buffer_timeout_us = GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT;
} else
gst_aravis->buffer_timeout_us = GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT;
GST_DEBUG_OBJECT (gst_aravis, "Buffer timeout = %" G_GUINT64_FORMAT " µs", gst_aravis->buffer_timeout_us);
GST_DEBUG_OBJECT (gst_aravis, "Actual frame rate = %g Hz", arv_camera_get_frame_rate (gst_aravis->camera));
if(gst_aravis->gain_auto) {
arv_camera_set_gain_auto (gst_aravis->camera, ARV_AUTO_CONTINUOUS);
GST_DEBUG_OBJECT (gst_aravis, "Auto Gain = continuous");
} else {
if (gst_aravis->gain >= 0) {
GST_DEBUG_OBJECT (gst_aravis, "Gain = %g", gst_aravis->gain);
arv_camera_set_gain_auto (gst_aravis->camera, ARV_AUTO_OFF);
arv_camera_set_gain (gst_aravis->camera, gst_aravis->gain);
}
GST_DEBUG_OBJECT (gst_aravis, "Actual gain = %g", arv_camera_get_gain (gst_aravis->camera));
}
if(gst_aravis->exposure_auto) {
arv_camera_set_exposure_time_auto (gst_aravis->camera, ARV_AUTO_CONTINUOUS);
GST_DEBUG_OBJECT (gst_aravis, "Auto Exposure = continuous");
} else {
if (gst_aravis->exposure_time_us > 0.0) {
GST_DEBUG_OBJECT (gst_aravis, "Exposure = %g µs", gst_aravis->exposure_time_us);
arv_camera_set_exposure_time_auto (gst_aravis->camera, ARV_AUTO_OFF);
arv_camera_set_exposure_time (gst_aravis->camera, gst_aravis->exposure_time_us);
}
GST_DEBUG_OBJECT (gst_aravis, "Actual exposure = %g µs", arv_camera_get_exposure_time (gst_aravis->camera));
}
if (gst_aravis->fixed_caps != NULL)
gst_caps_unref (gst_aravis->fixed_caps);
caps_string = arv_pixel_format_to_gst_0_10_caps_string (pixel_format);
if (caps_string != NULL) {
GstStructure *structure;
GstCaps *caps;
caps = gst_caps_new_empty ();
structure = gst_structure_from_string (caps_string, NULL);
gst_structure_set (structure,
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
NULL);
if (frame_rate != NULL)
gst_structure_set_value (structure, "framerate", frame_rate);
gst_caps_append_structure (caps, structure);
gst_aravis->fixed_caps = caps;
} else
gst_aravis->fixed_caps = NULL;
gst_aravis->payload = arv_camera_get_payload (gst_aravis->camera);
gst_aravis->stream = arv_camera_create_stream (gst_aravis->camera, NULL, NULL);
if (ARV_IS_GV_STREAM (gst_aravis->stream) && gst_aravis->packet_resend)
g_object_set (gst_aravis->stream, "packet-resend", ARV_GV_STREAM_PACKET_RESEND_ALWAYS, NULL);
else
g_object_set (gst_aravis->stream, "packet-resend", ARV_GV_STREAM_PACKET_RESEND_NEVER, NULL);
for (i = 0; i < GST_ARAVIS_N_BUFFERS; i++)
arv_stream_push_buffer (gst_aravis->stream,
arv_buffer_new (gst_aravis->payload, NULL));
GST_LOG_OBJECT (gst_aravis, "Start acquisition");
arv_camera_start_acquisition (gst_aravis->camera);
gst_aravis->timestamp_offset = 0;
gst_aravis->last_timestamp = 0;
return TRUE;
}
static GstFlowReturn
gst_aravis_create (GstPushSrc * push_src, GstBuffer ** buffer)
{
GstAravis *gst_aravis;
ArvBuffer *arv_buffer;
int arv_row_stride;
gst_aravis = GST_ARAVIS (push_src);
do {
arv_buffer = arv_stream_timeout_pop_buffer (gst_aravis->stream, gst_aravis->buffer_timeout_us);
if (arv_buffer != NULL && arv_buffer->status != ARV_BUFFER_STATUS_SUCCESS)
arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
} while (arv_buffer != NULL && arv_buffer->status != ARV_BUFFER_STATUS_SUCCESS);
if (arv_buffer == NULL)
return GST_FLOW_ERROR;
arv_row_stride = arv_buffer->width * ARV_PIXEL_FORMAT_BIT_PER_PIXEL (arv_buffer->pixel_format) / 8;
/* Gstreamer requires row stride to be a multiple of 4 */
if ((arv_row_stride & 0x3) != 0) {
int gst_row_stride;
size_t size;
void *data;
int i;
gst_row_stride = (arv_row_stride & ~(0x3)) + 4;
size = arv_buffer->height * gst_row_stride;
data = g_malloc (size);
for (i = 0; i < arv_buffer->height; i++)
memcpy (((char *) data) + i * gst_row_stride, ((char *) arv_buffer->data) + i * arv_row_stride, arv_row_stride);
*buffer = gst_buffer_new_wrapped (data, size);
} else {
*buffer = gst_buffer_new_wrapped_full (0,
arv_buffer->data,
arv_buffer->size,
0,
arv_buffer->size,
NULL,
NULL);
}
if (!gst_base_src_get_do_timestamp(GST_BASE_SRC(push_src))) {
if (gst_aravis->timestamp_offset == 0) {
gst_aravis->timestamp_offset = arv_buffer->timestamp_ns;
gst_aravis->last_timestamp = arv_buffer->timestamp_ns;
}
GST_BUFFER_PTS (*buffer) = arv_buffer->timestamp_ns - gst_aravis->timestamp_offset;
GST_BUFFER_DURATION (*buffer) = arv_buffer->timestamp_ns - gst_aravis->last_timestamp;
gst_aravis->last_timestamp = arv_buffer->timestamp_ns;
}
arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
return GST_FLOW_OK;
}
static gboolean
gst_aravis_set_caps (GstBaseSrc *src, GstCaps *caps)
{
GstAravis* gst_aravis = GST_ARAVIS(src);
GstStructure *structure;
ArvPixelFormat pixel_format;
int height, width;
int bpp, depth;
const GValue *frame_rate;
const char *caps_string;
unsigned int i;
guint32 fourcc;
GST_LOG_OBJECT (gst_aravis, "Requested caps = %" GST_PTR_FORMAT, caps);
arv_camera_stop_acquisition (gst_aravis->camera);
if (gst_aravis->stream != NULL)
g_object_unref (gst_aravis->stream);
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
frame_rate = gst_structure_get_value (structure, "framerate");
gst_structure_get_fourcc (structure, "format", &fourcc);
gst_structure_get_int (structure, "bpp", &bpp);
gst_structure_get_int (structure, "depth", &depth);
pixel_format = arv_pixel_format_from_gst_caps (gst_structure_get_name (structure), bpp, depth, fourcc);
arv_camera_set_region (gst_aravis->camera, 0, 0, width, height);
arv_camera_set_binning (gst_aravis->camera, gst_aravis->h_binning, gst_aravis->v_binning);
arv_camera_set_pixel_format (gst_aravis->camera, pixel_format);
if (frame_rate != NULL) {
double dbl_frame_rate;
dbl_frame_rate = (double) gst_value_get_fraction_numerator (frame_rate) /
(double) gst_value_get_fraction_denominator (frame_rate);
GST_DEBUG_OBJECT (gst_aravis, "Frame rate = %g Hz", dbl_frame_rate);
arv_camera_set_frame_rate (gst_aravis->camera, dbl_frame_rate);
if (dbl_frame_rate > 0.0)
gst_aravis->buffer_timeout_us = MAX (GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT,
3e6 / dbl_frame_rate);
else
gst_aravis->buffer_timeout_us = GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT;
} else
gst_aravis->buffer_timeout_us = GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT;
GST_DEBUG_OBJECT (gst_aravis, "Buffer timeout = %Ld µs", gst_aravis->buffer_timeout_us);
GST_DEBUG_OBJECT (gst_aravis, "Actual frame rate = %g Hz", arv_camera_get_frame_rate (gst_aravis->camera));
GST_DEBUG_OBJECT (gst_aravis, "Gain = %d", gst_aravis->gain);
arv_camera_set_gain (gst_aravis->camera, gst_aravis->gain);
GST_DEBUG_OBJECT (gst_aravis, "Actual gain = %d", arv_camera_get_gain (gst_aravis->camera));
GST_DEBUG_OBJECT (gst_aravis, "Exposure = %g µs", gst_aravis->exposure_time_us);
arv_camera_set_exposure_time (gst_aravis->camera, gst_aravis->exposure_time_us);
GST_DEBUG_OBJECT (gst_aravis, "Actual exposure = %g µs", arv_camera_get_exposure_time (gst_aravis->camera));
if (gst_aravis->fixed_caps != NULL)
gst_caps_unref (gst_aravis->fixed_caps);
caps_string = arv_pixel_format_to_gst_caps_string (pixel_format);
if (caps_string != NULL) {
GstStructure *structure;
GstCaps *caps;
caps = gst_caps_new_empty ();
structure = gst_structure_from_string (caps_string, NULL);
gst_structure_set (structure,
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
NULL);
if (frame_rate != NULL)
gst_structure_set_value (structure, "framerate", frame_rate);
gst_caps_append_structure (caps, structure);
gst_aravis->fixed_caps = caps;
} else
gst_aravis->fixed_caps = NULL;
gst_aravis->payload = arv_camera_get_payload (gst_aravis->camera);
gst_aravis->stream = arv_camera_create_stream (gst_aravis->camera, NULL, NULL);
for (i = 0; i < GST_ARAVIS_N_BUFFERS; i++)
arv_stream_push_buffer (gst_aravis->stream,
arv_buffer_new (gst_aravis->payload, NULL));
GST_LOG_OBJECT (gst_aravis, "Start acquisition");
arv_camera_start_acquisition (gst_aravis->camera);
gst_aravis->timestamp_offset = 0;
gst_aravis->last_timestamp = 0;
return TRUE;
}