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gstaravis.c
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/* Aravis - Digital camera library
*
* Copyright © 2006 Eric Jonas <[email protected]>
* Copyright © 2006 Antoine Tremblay <[email protected]>
* Copyright © 2010 United States Government, Joshua M. Doe <[email protected]>
* Copyright © 2009-2025 Emmanuel Pacaud <[email protected]>
*
* SPDX-License-Identifier: LGPL-2.0-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Emmanuel Pacaud <[email protected]>
*/
/**
* SECTION:element-aravissrc
*
* Source using the Aravis vision library
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v aravissrc ! video/x-raw,format=UYVY,width=512,height=512,framerate=25/1 ! autovideosink
* ]|
* </refsect2>
*/
#include <gstaravis.h>
#include <arvgvspprivate.h>
#include <time.h>
#include <string.h>
#include <stdio.h>
/* TODO: Add l10n */
#define _(x) (x)
#define GST_ARAVIS_DEFAULT_N_BUFFERS 50
#define GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT 2000000
GST_DEBUG_CATEGORY_STATIC (aravis_debug);
#define GST_CAT_DEFAULT aravis_debug
enum
{
PROP_CAMERA_NAME = 1,
PROP_CAMERA,
PROP_GAIN,
PROP_GAIN_AUTO,
PROP_EXPOSURE,
PROP_EXPOSURE_AUTO,
PROP_H_BINNING,
PROP_V_BINNING,
PROP_OFFSET_X,
PROP_OFFSET_Y,
PROP_PACKET_DELAY,
PROP_PACKET_SIZE,
PROP_AUTO_PACKET_SIZE,
PROP_PACKET_RESEND,
PROP_FEATURES,
PROP_NUM_ARV_BUFFERS,
PROP_USB_MODE,
PROP_STREAM,
PROP_TRIGGER,
N_PROPERTIES
};
static GParamSpec *properties[N_PROPERTIES];
enum
{
/* actions */
SIGNAL_SOFTWARE_TRIGGER,
LAST_SIGNAL
};
static guint gst_aravis_signals[LAST_SIGNAL] = { 0 };
#define GST_TYPE_ARV_AUTO (gst_arv_auto_get_type())
static GType
gst_arv_auto_get_type (void)
{
static GType arv_auto_type = 0;
static const GEnumValue arv_autos[] = {
{ARV_AUTO_OFF, "Off", "off"},
{ARV_AUTO_ONCE, "Once", "once"},
{ARV_AUTO_CONTINUOUS, "Continuous", "on"},
{0, NULL, NULL},
};
if (!arv_auto_type)
{
arv_auto_type = g_enum_register_static("GstArvAuto", arv_autos);
}
return arv_auto_type;
}
#define GST_TYPE_ARV_USB_MODE (gst_arv_usb_mode_get_type())
static GType
gst_arv_usb_mode_get_type (void)
{
static GType arv_usb_mode_type = 0;
static const GEnumValue arv_usb_modes[] = {
{ARV_UV_USB_MODE_SYNC, "Synchronous", "sync"},
{ARV_UV_USB_MODE_ASYNC, "Asynchronous", "async"},
{ARV_UV_USB_MODE_DEFAULT, "Default", "default"},
{0, NULL, NULL},
};
if (!arv_usb_mode_type)
{
arv_usb_mode_type = g_enum_register_static("GstArvUsbMode", arv_usb_modes);
}
return arv_usb_mode_type;
}
G_DEFINE_TYPE (GstAravis, gst_aravis, GST_TYPE_PUSH_SRC);
static GstStaticPadTemplate aravis_src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY"));
static GstCaps *
gst_aravis_get_all_camera_caps (GstAravis *gst_aravis, GError **error)
{
GError *local_error = NULL;
GstCaps *caps;
gint64 *pixel_formats = NULL;
double min_frame_rate, max_frame_rate;
int min_height, min_width;
int max_height, max_width;
unsigned int n_pixel_formats, i;
int min_frame_rate_numerator;
int min_frame_rate_denominator;
int max_frame_rate_numerator;
int max_frame_rate_denominator;
gboolean use_frame_rate;
g_return_val_if_fail (GST_IS_ARAVIS (gst_aravis), NULL);
if (!ARV_IS_CAMERA (gst_aravis->camera))
return NULL;
GST_LOG_OBJECT (gst_aravis, "Get all camera caps");
arv_camera_get_width_bounds (gst_aravis->camera, &min_width, &max_width, &local_error);
if (!local_error) arv_camera_get_height_bounds (gst_aravis->camera, &min_height, &max_height, &local_error);
if (!local_error) pixel_formats = arv_camera_dup_available_pixel_formats (gst_aravis->camera, &n_pixel_formats,
&local_error);
use_frame_rate = arv_camera_is_frame_rate_available (gst_aravis->camera, NULL) &&
gst_aravis->trigger_source == NULL;
if (use_frame_rate) {
if (!local_error) arv_camera_get_frame_rate_bounds (gst_aravis->camera,
&min_frame_rate, &max_frame_rate, &local_error);
if (!local_error) {
gst_util_double_to_fraction (min_frame_rate, &min_frame_rate_numerator, &min_frame_rate_denominator);
gst_util_double_to_fraction (max_frame_rate, &max_frame_rate_numerator, &max_frame_rate_denominator);
}
}
if (local_error) {
g_propagate_error (error, local_error);
return NULL;
}
caps = gst_caps_new_empty ();
for (i = 0; i < n_pixel_formats; i++) {
const char *caps_string;
caps_string = arv_pixel_format_to_gst_caps_string (pixel_formats[i]);
if (caps_string != NULL) {
GstStructure *structure;
structure = gst_structure_from_string (caps_string, NULL);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, min_width, max_width,
"height", GST_TYPE_INT_RANGE, min_height, max_height,
NULL);
if (use_frame_rate)
gst_structure_set (structure,
"framerate", GST_TYPE_FRACTION_RANGE,
min_frame_rate_numerator, min_frame_rate_denominator,
max_frame_rate_numerator, max_frame_rate_denominator,
NULL);
gst_caps_append_structure (caps, structure);
}
}
g_free (pixel_formats);
return caps;
}
static GstCaps *
gst_aravis_get_caps (GstBaseSrc * src, GstCaps * filter)
{
GstAravis* gst_aravis = GST_ARAVIS(src);
GstCaps *caps;
GST_OBJECT_LOCK (gst_aravis);
if (gst_aravis->all_caps != NULL)
caps = gst_caps_copy (gst_aravis->all_caps);
else
caps = gst_caps_new_any ();
GST_OBJECT_UNLOCK (gst_aravis);
GST_LOG_OBJECT (gst_aravis, "Available caps = %" GST_PTR_FORMAT, caps);
return caps;
}
static gboolean
gst_aravis_set_caps (GstBaseSrc *src, GstCaps *caps)
{
GError *error = NULL;
GstAravis* gst_aravis = GST_ARAVIS(src);
GstStructure *structure;
ArvPixelFormat pixel_format;
gint height, width;
gint current_height, current_width;
int depth = 0, bpp = 0;
const GValue *frame_rate = NULL;
const char *format_string;
unsigned int i;
ArvStream *orig_stream = NULL;
gboolean result = FALSE;
gboolean is_frame_rate_available;
gboolean is_gain_available;
gboolean is_gain_auto_available;
gboolean is_exposure_time_available;
gboolean is_exposure_auto_available;
GST_LOG_OBJECT (gst_aravis, "Requested caps = %" GST_PTR_FORMAT, caps);
structure = gst_caps_get_structure (caps, 0);
GST_OBJECT_LOCK (gst_aravis);
arv_camera_get_region (gst_aravis->camera, NULL, NULL, ¤t_width, ¤t_height, &error);
if (error)
goto errored;
width = current_width;
height = current_height;
is_frame_rate_available = arv_camera_is_frame_rate_available (gst_aravis->camera, NULL);
is_gain_available = arv_camera_is_gain_available (gst_aravis->camera, NULL);
is_gain_auto_available = arv_camera_is_gain_auto_available (gst_aravis->camera, NULL);
is_exposure_time_available = arv_camera_is_exposure_time_available (gst_aravis->camera, NULL);
is_exposure_auto_available = arv_camera_is_exposure_auto_available (gst_aravis->camera, NULL);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
gst_structure_get_int (structure, "depth", &depth);
gst_structure_get_int (structure, "bpp", &bpp);
if (is_frame_rate_available)
frame_rate = gst_structure_get_value (structure, "framerate");
format_string = gst_structure_get_string (structure, "format");
pixel_format = arv_pixel_format_from_gst_caps (gst_structure_get_name (structure), format_string, bpp, depth);
if (!pixel_format) {
GST_ERROR_OBJECT (src, "did not find matching pixel_format");
goto failed;
}
arv_camera_stop_acquisition (gst_aravis->camera, &error);
orig_stream = g_steal_pointer (&gst_aravis->stream);
if (!error) arv_camera_set_pixel_format (gst_aravis->camera, pixel_format, &error);
if (!error) arv_camera_set_binning (gst_aravis->camera, gst_aravis->h_binning, gst_aravis->v_binning, &error);
if (!error) {
if (width != current_width || height != current_height)
arv_camera_set_region (gst_aravis->camera,
gst_aravis->offset_x, gst_aravis->offset_y,
width, height, &error);
else
arv_camera_set_region (gst_aravis->camera,
gst_aravis->offset_x, gst_aravis->offset_y,
-1, -1, &error);
}
if (!error && arv_camera_is_gv_device (gst_aravis->camera)) {
if (gst_aravis->packet_delay >= 0) {
gint64 delay = 0;
arv_camera_gv_set_packet_delay (gst_aravis->camera, gst_aravis->packet_delay, &error);
if (!error) delay = arv_camera_gv_get_packet_delay (gst_aravis->camera, &error);
if (!error && delay != gst_aravis->packet_delay)
GST_WARNING_OBJECT (gst_aravis, "Packet delay is %" G_GINT64_FORMAT " ns instead of %" G_GINT64_FORMAT,
delay, gst_aravis->packet_delay);
}
if (!error && gst_aravis->packet_size > 0)
arv_camera_gv_set_packet_size (gst_aravis->camera, gst_aravis->packet_size, &error);
if (!error && gst_aravis->auto_packet_size)
arv_camera_gv_auto_packet_size (gst_aravis->camera, &error);
}
if (!error && frame_rate != NULL) {
gst_aravis->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", gst_aravis->frame_rate);
arv_camera_set_frame_rate (gst_aravis->camera, gst_aravis->frame_rate, &error);
if (gst_aravis->frame_rate > 0.0)
gst_aravis->buffer_timeout_us = MAX (GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT,
3e6 / gst_aravis->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);
if (is_frame_rate_available)
GST_DEBUG_OBJECT (gst_aravis, "Actual frame rate = %g Hz",
arv_camera_get_frame_rate (gst_aravis->camera, NULL));
if (is_gain_auto_available && !error && gst_aravis->gain_auto_set) {
arv_camera_set_gain_auto (gst_aravis->camera, gst_aravis->gain_auto, &error);
GST_DEBUG_OBJECT (gst_aravis, "Auto Gain = %s", arv_auto_to_string(gst_aravis->gain_auto));
}
if (is_gain_available && gst_aravis->gain_auto == ARV_AUTO_OFF) {
if (gst_aravis->gain >= 0) {
GST_DEBUG_OBJECT (gst_aravis, "Gain = %g", gst_aravis->gain);
if (is_gain_auto_available && !error && !gst_aravis->gain_auto_set)
arv_camera_set_gain_auto (gst_aravis->camera, ARV_AUTO_OFF, &error);
if (!error) arv_camera_set_gain (gst_aravis->camera, gst_aravis->gain, &error);
}
GST_DEBUG_OBJECT (gst_aravis, "Actual gain = %g", arv_camera_get_gain (gst_aravis->camera, NULL));
}
if (is_exposure_auto_available && !error && gst_aravis->exposure_auto_set) {
arv_camera_set_exposure_time_auto (gst_aravis->camera, gst_aravis->exposure_auto, &error);
GST_DEBUG_OBJECT (gst_aravis, "Auto Exposure = %s", arv_auto_to_string(gst_aravis->exposure_auto));
}
if (is_exposure_time_available && gst_aravis->exposure_auto == ARV_AUTO_OFF) {
if (gst_aravis->exposure_time_us > 0.0) {
GST_DEBUG_OBJECT (gst_aravis, "Exposure = %g µs", gst_aravis->exposure_time_us);
if (is_exposure_auto_available && !error && !gst_aravis->exposure_auto_set)
arv_camera_set_exposure_time_auto (gst_aravis->camera, ARV_AUTO_OFF, &error);
if (!error) arv_camera_set_exposure_time (gst_aravis->camera, gst_aravis->exposure_time_us, &error);
}
GST_DEBUG_OBJECT (gst_aravis, "Actual exposure = %g µs", arv_camera_get_exposure_time (gst_aravis->camera, NULL));
}
if (!error) arv_device_set_features_from_string (arv_camera_get_device (gst_aravis->camera), gst_aravis->features, &error);
if (!error) gst_aravis->payload = arv_camera_get_payload (gst_aravis->camera, &error);
if (!error) gst_aravis->stream = arv_camera_create_stream (gst_aravis->camera, NULL, NULL, &error);
if (error)
goto errored;
if (ARV_IS_GV_STREAM (gst_aravis->stream)) {
if (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->num_arv_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, &error);
gst_aravis->timestamp_offset = 0;
gst_aravis->last_timestamp = 0;
if (error)
goto errored;
GST_OBJECT_UNLOCK (gst_aravis);
g_object_notify_by_pspec (G_OBJECT (gst_aravis), properties[PROP_STREAM]);
result = TRUE;
goto unref;
errored:
GST_OBJECT_UNLOCK (gst_aravis);
GST_ELEMENT_ERROR (gst_aravis, RESOURCE, WRITE,
(_("Could not set caps on camera \"%s\": %s"),
gst_aravis->camera_name ? gst_aravis->camera_name : "",
error->message),
(NULL));
g_error_free (error);
goto unref;
failed:
GST_OBJECT_UNLOCK (gst_aravis);
unref:
if (orig_stream != NULL)
g_object_unref (orig_stream);
return result;
}
static void
gst_aravis_software_trigger (GstAravis *src) {
if (ARV_IS_CAMERA (src->camera)) {
arv_camera_software_trigger(src->camera, NULL);
}
}
static gboolean
gst_aravis_init_camera (GstAravis *gst_aravis, gboolean *notify, GError **error)
{
GError *local_error = NULL;
if (gst_aravis->camera != NULL) {
g_object_unref (gst_aravis->camera);
if (notify != NULL)
*notify = TRUE;
} else
if (notify != NULL)
*notify = FALSE;
gst_aravis->camera = arv_camera_new (gst_aravis->camera_name, &local_error);
if (!local_error) arv_camera_get_region (gst_aravis->camera, &gst_aravis->offset_x,
&gst_aravis->offset_y, NULL, NULL, &local_error);
if (!local_error) gst_aravis->payload = 0;
if (!local_error && arv_camera_is_uv_device (gst_aravis->camera))
arv_camera_uv_set_usb_mode (gst_aravis->camera, gst_aravis->usb_mode);
if (!local_error && gst_aravis->trigger_source != NULL)
arv_camera_set_trigger (gst_aravis->camera, gst_aravis->trigger_source, &local_error);
if (local_error) {
g_clear_object (&gst_aravis->camera);
g_propagate_error (error, local_error);
return FALSE;
}
if (notify != NULL)
*notify = TRUE;
return TRUE;
}
static void
gst_aravis_init_error (GstAravis *gst_aravis, GError *error)
{
if (error->domain == ARV_DEVICE_ERROR && error->code == ARV_DEVICE_ERROR_NOT_FOUND) {
GST_ELEMENT_ERROR (gst_aravis, RESOURCE, NOT_FOUND,
(_("Could not find camera \"%s\": %s"),
gst_aravis->camera_name ? gst_aravis->camera_name : "",
error->message),
(NULL));
} else {
GST_ELEMENT_ERROR (gst_aravis, RESOURCE, READ,
(_("Could not read camera \"%s\": %s"),
gst_aravis->camera_name ? gst_aravis->camera_name : "",
error->message),
(NULL));
}
g_error_free (error);
}
static gboolean
gst_aravis_start (GstBaseSrc *src)
{
GError *error = NULL;
gboolean result = TRUE;
gboolean notify = FALSE;
GstAravis* gst_aravis = GST_ARAVIS(src);
if (gst_aravis->camera_name != NULL)
GST_LOG_OBJECT (gst_aravis, "Open camera '%s'", gst_aravis->camera_name);
else
GST_LOG_OBJECT (gst_aravis, "Open first available camera");
GST_OBJECT_LOCK (gst_aravis);
if (gst_aravis->camera == NULL)
result = gst_aravis_init_camera (gst_aravis, ¬ify, &error);
if (result) gst_aravis->all_caps = gst_aravis_get_all_camera_caps (gst_aravis, &error);
GST_OBJECT_UNLOCK (gst_aravis);
if (notify)
g_object_notify_by_pspec (G_OBJECT (gst_aravis), properties[PROP_CAMERA]);
if (error)
gst_aravis_init_error (gst_aravis, error);
return result;
}
static gboolean
gst_aravis_stop( GstBaseSrc * src )
{
GError *error = NULL;
GstAravis* gst_aravis = GST_ARAVIS(src);
ArvCamera *camera;
ArvStream *stream;
GstCaps *all_caps;
GST_OBJECT_LOCK (gst_aravis);
arv_camera_stop_acquisition (gst_aravis->camera, &error);
camera = g_steal_pointer (&gst_aravis->camera);
stream = g_steal_pointer (&gst_aravis->stream);
all_caps = g_steal_pointer (&gst_aravis->all_caps);
GST_OBJECT_UNLOCK (gst_aravis);
if (stream != NULL)
g_object_unref (stream);
if (camera != NULL)
g_object_unref (camera);
if (all_caps != NULL)
gst_caps_unref (all_caps);
GST_DEBUG_OBJECT (gst_aravis, "Stop acquisition");
if (error) {
// GigEVision write_register timeout is common if
// stopping due to lost camera
GST_ERROR_OBJECT (src, "Acquisition stop error: %s", error->message);
g_error_free (error);
}
return TRUE;
}
static void
gst_aravis_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
if (gst_base_src_is_live (basesrc)) {
GstClockTime timestamp = GST_BUFFER_PTS (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
GstClockTime duration = GST_BUFFER_DURATION (buffer);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
*end = timestamp + duration;
}
*start = timestamp;
}
} else {
*start = -1;
*end = -1;
}
}
static GstFlowReturn
gst_aravis_create (GstPushSrc * push_src, GstBuffer ** buffer)
{
GstAravis *gst_aravis;
int arv_row_stride;
int width, height;
char *buffer_data;
size_t buffer_size;
guint64 timestamp_ns;
gboolean base_src_does_timestamp;
ArvBuffer *arv_buffer = NULL;
gst_aravis = GST_ARAVIS (push_src);
base_src_does_timestamp = gst_base_src_get_do_timestamp(GST_BASE_SRC(push_src));
GST_OBJECT_LOCK (gst_aravis);
do {
if (arv_buffer) arv_stream_push_buffer (gst_aravis->stream, arv_buffer);
arv_buffer = arv_stream_timeout_pop_buffer (gst_aravis->stream, gst_aravis->buffer_timeout_us);
} while (arv_buffer != NULL && arv_buffer_get_status (arv_buffer) != ARV_BUFFER_STATUS_SUCCESS);
if (arv_buffer == NULL)
goto error;
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;
char *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 (data + i * gst_row_stride, buffer_data + i * arv_row_stride, arv_row_stride);
*buffer = gst_buffer_new_wrapped (data, size);
} else {
// FIXME Should arv_stream_push_buffer when the GstBuffer is destroyed
*buffer = gst_buffer_new_wrapped_full (0, buffer_data, buffer_size, 0, buffer_size, NULL, NULL);
}
if (!base_src_does_timestamp) {
if (gst_aravis->timestamp_offset == 0) {
gst_aravis->timestamp_offset = timestamp_ns;
gst_aravis->last_timestamp = timestamp_ns;
}
GST_BUFFER_PTS (*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_OBJECT_UNLOCK (gst_aravis);
return GST_FLOW_OK;
error:
GST_OBJECT_UNLOCK (gst_aravis);
return GST_FLOW_ERROR;
}
static GstCaps *
gst_aravis_fixate_caps (GstBaseSrc * bsrc, GstCaps * caps)
{
GError *error = NULL;
GstAravis *gst_aravis = GST_ARAVIS (bsrc);
GstStructure *structure;
gint width;
gint height;
double frame_rate = 0.0;
gboolean use_frame_rate;
g_return_val_if_fail (GST_IS_ARAVIS (bsrc), NULL);
GST_OBJECT_LOCK (gst_aravis);
arv_camera_get_region (gst_aravis->camera, NULL, NULL, &width, &height, &error);
use_frame_rate = arv_camera_is_frame_rate_available (gst_aravis->camera, NULL) &&
gst_aravis->trigger_source == NULL;
if (use_frame_rate)
if (!error) frame_rate = arv_camera_get_frame_rate (gst_aravis->camera, &error);
GST_OBJECT_UNLOCK (gst_aravis);
if (error) {
GST_ELEMENT_ERROR (gst_aravis, RESOURCE, READ,
(_("Could not read camera \"%s\": %s"),
gst_aravis->camera_name ? gst_aravis->camera_name : "",
error->message),
(NULL));
g_error_free (error);
} else {
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);
if (use_frame_rate)
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 void
gst_aravis_init (GstAravis *gst_aravis)
{
gst_base_src_set_live (GST_BASE_SRC (gst_aravis), TRUE);
gst_base_src_set_format (GST_BASE_SRC (gst_aravis), GST_FORMAT_TIME);
gst_aravis->camera_name = NULL;
gst_aravis->gain = -1;
gst_aravis->gain_auto = ARV_AUTO_OFF;
gst_aravis->gain_auto_set = FALSE;
gst_aravis->exposure_time_us = -1;
gst_aravis->exposure_auto = ARV_AUTO_OFF;
gst_aravis->exposure_auto_set = FALSE;
gst_aravis->offset_x = 0;
gst_aravis->offset_y = 0;
gst_aravis->h_binning = -1;
gst_aravis->v_binning = -1;
gst_aravis->packet_delay = -1;
gst_aravis->packet_size = -1;
gst_aravis->auto_packet_size = FALSE;
gst_aravis->packet_resend = TRUE;
gst_aravis->num_arv_buffers = GST_ARAVIS_DEFAULT_N_BUFFERS;
gst_aravis->payload = 0;
gst_aravis->usb_mode = ARV_UV_USB_MODE_DEFAULT;
gst_aravis->buffer_timeout_us = GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT;
gst_aravis->frame_rate = 0.0;
gst_aravis->trigger_source = NULL;
gst_aravis->camera = NULL;
gst_aravis->stream = NULL;
gst_aravis->all_caps = NULL;
}
static void
gst_aravis_finalize (GObject * object)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
ArvCamera *camera;
ArvStream *stream;
GstCaps *all_caps;
GST_OBJECT_LOCK (gst_aravis);
camera = g_steal_pointer (&gst_aravis->camera);
stream = g_steal_pointer (&gst_aravis->stream);
all_caps = g_steal_pointer (&gst_aravis->all_caps);
g_clear_pointer (&gst_aravis->camera_name, g_free);
g_clear_pointer (&gst_aravis->features, g_free);
g_clear_pointer (&gst_aravis->trigger_source, g_free);
GST_OBJECT_UNLOCK (gst_aravis);
if (camera != NULL)
g_object_unref (camera);
if (stream != NULL)
g_object_unref (stream);
if (all_caps != NULL)
gst_caps_unref (all_caps);
G_OBJECT_CLASS (gst_aravis_parent_class)->finalize (object);
}
static void
gst_aravis_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GError *error = NULL;
GstAravis *gst_aravis = GST_ARAVIS (object);
GST_DEBUG_OBJECT (gst_aravis, "setting property %s", pspec->name);
switch (prop_id) {
gboolean notify;
case PROP_CAMERA_NAME:
notify= FALSE;
GST_OBJECT_LOCK (gst_aravis);
/* check if we are currently active
prevent setting camera and other values to something not representing the active camera */
if (gst_aravis->stream == NULL) {
g_free (gst_aravis->camera_name);
gst_aravis->camera_name = g_strdup (g_value_get_string (value));
gst_aravis_init_camera (gst_aravis, ¬ify, &error);
}
GST_LOG_OBJECT (gst_aravis, "Set camera name to %s", gst_aravis->camera_name);
GST_OBJECT_UNLOCK (gst_aravis);
if (error)
gst_aravis_init_error (gst_aravis, error);
if (notify)
g_object_notify_by_pspec (G_OBJECT (gst_aravis), properties[PROP_CAMERA]);
break;
case PROP_GAIN:
GST_OBJECT_LOCK (gst_aravis);
gst_aravis->gain = g_value_get_double (value);
if (gst_aravis->camera != NULL && arv_camera_is_gain_available (gst_aravis->camera, NULL))
arv_camera_set_gain (gst_aravis->camera, gst_aravis->gain, NULL);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_GAIN_AUTO:
GST_OBJECT_LOCK (gst_aravis);
gst_aravis->gain_auto = g_value_get_enum (value);
gst_aravis->gain_auto_set = TRUE;
if (gst_aravis->camera != NULL && arv_camera_is_gain_auto_available (gst_aravis->camera, NULL))
arv_camera_set_gain_auto (gst_aravis->camera, gst_aravis->gain_auto, NULL);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_EXPOSURE:
GST_OBJECT_LOCK (gst_aravis);
gst_aravis->exposure_time_us = g_value_get_double (value);
if (gst_aravis->camera != NULL &&
arv_camera_is_exposure_time_available (gst_aravis->camera, NULL))
arv_camera_set_exposure_time (gst_aravis->camera, gst_aravis->exposure_time_us, NULL);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_EXPOSURE_AUTO:
GST_OBJECT_LOCK (gst_aravis);
gst_aravis->exposure_auto = g_value_get_enum (value);
gst_aravis->exposure_auto_set = TRUE;
if (gst_aravis->camera != NULL &&
arv_camera_is_exposure_auto_available (gst_aravis->camera, NULL))
arv_camera_set_exposure_time_auto (gst_aravis->camera, gst_aravis->exposure_auto, NULL);
GST_OBJECT_UNLOCK (gst_aravis);
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_DELAY:
GST_OBJECT_LOCK (gst_aravis);
gst_aravis->packet_delay = g_value_get_int64 (value);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_PACKET_SIZE:
gst_aravis->packet_size = g_value_get_int (value);
break;
case PROP_AUTO_PACKET_SIZE:
gst_aravis->auto_packet_size = g_value_get_boolean (value);
break;
case PROP_PACKET_RESEND:
gst_aravis->packet_resend = g_value_get_boolean (value);
break;
case PROP_FEATURES:
GST_OBJECT_LOCK (gst_aravis);
g_free (gst_aravis->features);
gst_aravis->features = g_value_dup_string (value);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_NUM_ARV_BUFFERS:
gst_aravis->num_arv_buffers = g_value_get_int (value);
break;
case PROP_USB_MODE:
gst_aravis->usb_mode = g_value_get_enum (value);
break;
case PROP_TRIGGER:
GST_OBJECT_LOCK (gst_aravis);
g_free (gst_aravis->trigger_source);
gst_aravis->trigger_source = g_strdup (g_value_get_string (value));
GST_OBJECT_UNLOCK (gst_aravis);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_aravis_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAravis *gst_aravis = GST_ARAVIS (object);
GST_DEBUG_OBJECT (gst_aravis, "getting property %s", pspec->name);
switch (prop_id) {
case PROP_CAMERA_NAME:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_string (value, gst_aravis->camera_name);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_CAMERA:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_object (value, gst_aravis->camera);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_GAIN:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_double (value, gst_aravis->gain);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_GAIN_AUTO:
GST_OBJECT_LOCK (gst_aravis);
if (!gst_aravis->gain_auto_set && gst_aravis->camera != NULL &&
arv_camera_is_gain_auto_available (gst_aravis->camera, NULL)) {
gst_aravis->gain_auto = arv_camera_get_gain_auto(gst_aravis->camera, NULL);
}
g_value_set_enum (value, gst_aravis->gain_auto);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_EXPOSURE:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_double (value, gst_aravis->exposure_time_us);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_EXPOSURE_AUTO:
GST_OBJECT_LOCK (gst_aravis);
if (!gst_aravis->exposure_auto_set && gst_aravis->camera != NULL &&
arv_camera_is_exposure_auto_available (gst_aravis->camera, NULL)) {
gst_aravis->exposure_auto = arv_camera_get_exposure_time_auto(gst_aravis->camera, NULL);
}
g_value_set_enum (value, gst_aravis->exposure_auto);
GST_OBJECT_UNLOCK (gst_aravis);
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:
GST_OBJECT_LOCK (gst_aravis);
if (gst_aravis->h_binning < 0 && gst_aravis->camera) {
arv_camera_get_binning (gst_aravis->camera, &gst_aravis->h_binning, NULL, NULL);
}
g_value_set_int (value, gst_aravis->h_binning);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_V_BINNING:
GST_OBJECT_LOCK (gst_aravis);
if (gst_aravis->v_binning < 0 && gst_aravis->camera) {
arv_camera_get_binning (gst_aravis->camera, NULL, &gst_aravis->v_binning, NULL);
}
g_value_set_int (value, gst_aravis->v_binning);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_PACKET_DELAY:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_int64 (value, gst_aravis->packet_delay);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_PACKET_SIZE:
g_value_set_int (value, gst_aravis->packet_size);
break;
case PROP_AUTO_PACKET_SIZE:
g_value_set_boolean (value, gst_aravis->auto_packet_size);
break;
case PROP_PACKET_RESEND:
g_value_set_boolean (value, gst_aravis->packet_resend);
break;
case PROP_FEATURES:
g_value_set_string (value, gst_aravis->features);
break;
case PROP_NUM_ARV_BUFFERS:
g_value_set_int (value, gst_aravis->num_arv_buffers);
break;
case PROP_USB_MODE:
g_value_set_enum(value, gst_aravis->usb_mode);
break;
case PROP_STREAM:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_object (value, gst_aravis->stream);
GST_OBJECT_UNLOCK (gst_aravis);
break;
case PROP_TRIGGER:
GST_OBJECT_LOCK (gst_aravis);
g_value_set_string (value, gst_aravis->trigger_source);
GST_OBJECT_UNLOCK (gst_aravis);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_aravis_query (GstBaseSrc *bsrc, GstQuery *query)
{
GstAravis *src = GST_ARAVIS (bsrc);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query))
{
case GST_QUERY_LATENCY:
{
GstClockTime min_latency;
GstClockTime max_latency;
/* device must be open */
if (!src->stream)
{
GST_WARNING_OBJECT (src, "Can't give latency since device isn't open !");
goto done;
}
/* we must have a framerate */
if (src->frame_rate <= 0.0 || src->trigger_source != NULL)
{
GST_WARNING_OBJECT (src, "Can't give latency since framerate isn't fixated !");
goto done;
}
/* min latency is the time to capture one frame/field */
min_latency = gst_util_gdouble_to_guint64 (src->frame_rate);
/* max latency is set to NONE because cameras may enter trigger mode
and not deliver images for an unspecified amount of time */
max_latency = GST_CLOCK_TIME_NONE;
GST_DEBUG_OBJECT (bsrc, "report latency min %" GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
/* we are always live, the min latency is 1 frame and the max latency is