/* GStreamer
*
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
- * 2006 Edgard Lima <edgard.lima@indt.org.br>
+ * 2006 Edgard Lima <edgard.lima@gmail.com>
*
* gstv4l2src.c: Video4Linux2 source element
*
* ]| This pipeline shows the video captured from a webcam that delivers jpeg
* images.
* </refsect2>
+ *
+ * Since 1.14, the use of libv4l2 has been disabled due to major bugs in the
+ * emulation layer. To enable usage of this library, set the environment
+ * variable GST_V4L2_USE_LIBV4L2=1.
*/
#ifdef HAVE_CONFIG_H
{
PROP_0,
V4L2_STD_OBJECT_PROPS,
+#ifdef TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID
+ PROP_CAMERA_ID,
+#endif /* TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID */
PROP_LAST
};
static gboolean gst_v4l2src_unlock (GstBaseSrc * src);
static gboolean gst_v4l2src_unlock_stop (GstBaseSrc * src);
static gboolean gst_v4l2src_stop (GstBaseSrc * src);
-static gboolean gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps);
static GstCaps *gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter);
static gboolean gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query);
static gboolean gst_v4l2src_decide_allocation (GstBaseSrc * src,
GstQuery * query);
static GstFlowReturn gst_v4l2src_create (GstPushSrc * src, GstBuffer ** out);
-static GstCaps *gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
+static GstCaps *gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps,
+ GstStructure * pref_s);
static gboolean gst_v4l2src_negotiate (GstBaseSrc * basesrc);
static void gst_v4l2src_set_property (GObject * object, guint prop_id,
gst_v4l2_object_install_properties_helper (gobject_class,
DEFAULT_PROP_DEVICE);
+#ifdef TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID
+ /**
+ * GstV4l2Src:camera-id:
+ *
+ * The value which is set by application will be used as a number of device node.
+ * ex) 1 -> /dev/video1
+ */
+ g_object_class_install_property (gobject_class, PROP_CAMERA_ID,
+ g_param_spec_uint ("camera-id", "Camera ID",
+ "Camera ID for device node", 0, G_MAXUINT, 0,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+#endif /* TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID */
+
/**
* GstV4l2Src::prepare-format:
* @v4l2src: the v4l2src instance
* happen prior to the format being set.
* This is mostly useful for UVC H264 encoding cameras which need the H264
* Probe & Commit to happen prior to the normal Probe & Commit.
- *
- * Since: 0.10.32
*/
gst_v4l2_signals[SIGNAL_PRE_SET_FORMAT] = g_signal_new ("prepare-format",
G_TYPE_FROM_CLASS (klass),
gst_element_class_set_static_metadata (element_class,
"Video (video4linux2) Source", "Source/Video",
"Reads frames from a Video4Linux2 device",
- "Edgard Lima <edgard.lima@indt.org.br>, "
+ "Edgard Lima <edgard.lima@gmail.com>, "
"Stefan Kost <ensonic@users.sf.net>");
gst_element_class_add_pad_template
gst_v4l2_object_get_all_caps ()));
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_get_caps);
- basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_set_caps);
basesrc_class->start = GST_DEBUG_FUNCPTR (gst_v4l2src_start);
basesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_v4l2src_unlock);
basesrc_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_v4l2src_unlock_stop);
basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_v4l2src_stop);
basesrc_class->query = GST_DEBUG_FUNCPTR (gst_v4l2src_query);
- basesrc_class->fixate = GST_DEBUG_FUNCPTR (gst_v4l2src_fixate);
basesrc_class->negotiate = GST_DEBUG_FUNCPTR (gst_v4l2src_negotiate);
basesrc_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_v4l2src_decide_allocation);
{
/* fixme: give an update_fps_function */
v4l2src->v4l2object = gst_v4l2_object_new (GST_ELEMENT (v4l2src),
- V4L2_BUF_TYPE_VIDEO_CAPTURE, DEFAULT_PROP_DEVICE,
- gst_v4l2_get_input, gst_v4l2_set_input, NULL);
+ GST_OBJECT (GST_BASE_SRC_PAD (v4l2src)), V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ DEFAULT_PROP_DEVICE, gst_v4l2_get_input, gst_v4l2_set_input, NULL);
+
+ /* Avoid the slow probes */
+ v4l2src->v4l2object->skip_try_fmt_probes = TRUE;
gst_base_src_set_format (GST_BASE_SRC (v4l2src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (v4l2src), TRUE);
if (!gst_v4l2_object_set_property_helper (v4l2src->v4l2object,
prop_id, value, pspec)) {
switch (prop_id) {
+#ifdef TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID
+ case PROP_CAMERA_ID:
+ g_free (v4l2src->v4l2object->videodev);
+
+ v4l2src->camera_id = g_value_get_uint (value);
+ v4l2src->v4l2object->videodev = g_strdup_printf ("/dev/video%u", v4l2src->camera_id);
+
+ GST_INFO_OBJECT(v4l2src, "videodev [%s]", v4l2src->v4l2object->videodev);
+ break;
+#endif /* TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID */
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
if (!gst_v4l2_object_get_property_helper (v4l2src->v4l2object,
prop_id, value, pspec)) {
switch (prop_id) {
+#ifdef TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID
+ case PROP_CAMERA_ID:
+ g_value_set_uint (value, v4l2src->camera_id);
+ break;
+#endif /* TIZEN_FEATURE_V4L2SRC_SUPPORT_CAMERA_ID */
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
-/* this function is a bit of a last resort */
+struct PreferedCapsInfo
+{
+ gint width;
+ gint height;
+ gint fps_n;
+ gint fps_d;
+};
+
+static gboolean
+gst_vl42_src_fixate_fields (GQuark field_id, GValue * value, gpointer user_data)
+{
+ GstStructure *s = user_data;
+
+ if (field_id == g_quark_from_string ("interlace-mode"))
+ return TRUE;
+
+ if (field_id == g_quark_from_string ("colorimetry"))
+ return TRUE;
+
+ gst_structure_fixate_field (s, g_quark_to_string (field_id));
+
+ return TRUE;
+}
+
+static void
+gst_v4l2_src_fixate_struct_with_preference (GstStructure * s,
+ struct PreferedCapsInfo *pref)
+{
+ if (gst_structure_has_field (s, "width"))
+ gst_structure_fixate_field_nearest_int (s, "width", pref->width);
+
+ if (gst_structure_has_field (s, "height"))
+ gst_structure_fixate_field_nearest_int (s, "height", pref->height);
+
+ if (gst_structure_has_field (s, "framerate"))
+ gst_structure_fixate_field_nearest_fraction (s, "framerate", pref->fps_n,
+ pref->fps_d);
+
+ /* Finally, fixate everything else except the interlace-mode and colorimetry
+ * which still need further negotiation as it wasn't probed */
+ gst_structure_map_in_place (s, gst_vl42_src_fixate_fields, s);
+}
+
+static void
+gst_v4l2_src_parse_fixed_struct (GstStructure * s,
+ gint * width, gint * height, gint * fps_n, gint * fps_d)
+{
+ if (gst_structure_has_field (s, "width") && width)
+ gst_structure_get_int (s, "width", width);
+
+ if (gst_structure_has_field (s, "height") && height)
+ gst_structure_get_int (s, "height", height);
+
+ if (gst_structure_has_field (s, "framerate") && fps_n && fps_d)
+ gst_structure_get_fraction (s, "framerate", fps_n, fps_d);
+}
+
+/* TODO Consider framerate */
+static gint
+gst_v4l2src_fixed_caps_compare (GstCaps * caps_a, GstCaps * caps_b,
+ struct PreferedCapsInfo *pref)
+{
+ GstStructure *a, *b;
+ gint aw = G_MAXINT, ah = G_MAXINT, ad = G_MAXINT;
+ gint bw = G_MAXINT, bh = G_MAXINT, bd = G_MAXINT;
+ gint ret;
+
+ a = gst_caps_get_structure (caps_a, 0);
+ b = gst_caps_get_structure (caps_b, 0);
+
+ gst_v4l2_src_parse_fixed_struct (a, &aw, &ah, NULL, NULL);
+ gst_v4l2_src_parse_fixed_struct (b, &bw, &bh, NULL, NULL);
+
+ /* When both are smaller then pref, just append to the end */
+ if ((bw < pref->width || bh < pref->height)
+ && (aw < pref->width || ah < pref->height)) {
+ ret = 1;
+ goto done;
+ }
+
+ /* If a is smaller then pref and not b, then a goes after b */
+ if (aw < pref->width || ah < pref->height) {
+ ret = 1;
+ goto done;
+ }
+
+ /* If b is smaller then pref and not a, then a goes before b */
+ if (bw < pref->width || bh < pref->height) {
+ ret = -1;
+ goto done;
+ }
+
+ /* Both are larger or equal to the preference, prefer the smallest */
+ ad = MAX (1, aw - pref->width) * MAX (1, ah - pref->height);
+ bd = MAX (1, bw - pref->width) * MAX (1, bh - pref->height);
+
+ /* Adjust slightly in case width/height matched the preference */
+ if (aw == pref->width)
+ ad -= 1;
+
+ if (ah == pref->height)
+ ad -= 1;
+
+ if (bw == pref->width)
+ bd -= 1;
+
+ if (bh == pref->height)
+ bd -= 1;
+
+ /* If the choices are equivalent, maintain the order */
+ if (ad == bd)
+ ret = 1;
+ else
+ ret = ad - bd;
+
+done:
+ GST_TRACE ("Placing %ix%i (%s) %s %ix%i (%s)", aw, ah,
+ gst_structure_get_string (a, "format"), ret > 0 ? "after" : "before", bw,
+ bh, gst_structure_get_string (b, "format"));
+ return ret;
+}
+
+static gboolean
+gst_v4l2src_set_format (GstV4l2Src * v4l2src, GstCaps * caps,
+ GstV4l2Error * error)
+{
+ GstV4l2Object *obj;
+
+ obj = v4l2src->v4l2object;
+
+ /* make sure we stop capturing and dealloc buffers */
+ if (!gst_v4l2_object_stop (obj))
+ return FALSE;
+
+ g_signal_emit (v4l2src, gst_v4l2_signals[SIGNAL_PRE_SET_FORMAT], 0,
+ v4l2src->v4l2object->video_fd, caps);
+
+ return gst_v4l2_object_set_format (obj, caps, error);
+}
+
static GstCaps *
-gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps)
+gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps, GstStructure * pref_s)
{
- GstStructure *structure;
- gint i;
+ /* Let's prefer a good resolutiion as of today's standard. */
+ struct PreferedCapsInfo pref = {
+ 3840, 2160, 120, 1
+ };
+ GstV4l2Src *v4l2src = GST_V4L2SRC (basesrc);
+ GstV4l2Object *obj = v4l2src->v4l2object;
+ GList *caps_list = NULL;
+ GstStructure *s;
+ gint i = G_MAXINT;
+ GstV4l2Error error = GST_V4L2_ERROR_INIT;
+ GstCaps *fcaps = NULL;
GST_DEBUG_OBJECT (basesrc, "fixating caps %" GST_PTR_FORMAT, caps);
- caps = gst_caps_make_writable (caps);
+ /* We consider the first structure from peercaps to be a preference. This is
+ * useful for matching a reported native display, or simply to avoid
+ * transformation to happen downstream. */
+ if (pref_s) {
+ pref_s = gst_structure_copy (pref_s);
+ gst_v4l2_src_fixate_struct_with_preference (pref_s, &pref);
+ gst_v4l2_src_parse_fixed_struct (pref_s, &pref.width, &pref.height,
+ &pref.fps_n, &pref.fps_d);
+ gst_structure_free (pref_s);
+ }
+
+ GST_DEBUG_OBJECT (basesrc, "Prefered size %ix%i", pref.width, pref.height);
+
+ /* Sort the structures to get the caps that is nearest to our preferences,
+ * first. Use single struct caps for sorting so we preserve the features. */
+ for (i = 0; i < gst_caps_get_size (caps); i++) {
+ GstCaps *tmp = gst_caps_copy_nth (caps, i);
+
+ s = gst_caps_get_structure (tmp, 0);
+ gst_v4l2_src_fixate_struct_with_preference (s, &pref);
+
+ caps_list = g_list_insert_sorted_with_data (caps_list, tmp,
+ (GCompareDataFunc) gst_v4l2src_fixed_caps_compare, &pref);
+ }
+
+ gst_caps_unref (caps);
+ caps = gst_caps_new_empty ();
+
+ while (caps_list) {
+ GstCaps *tmp = caps_list->data;
+ caps_list = g_list_delete_link (caps_list, caps_list);
+ gst_caps_append (caps, tmp);
+ }
+
+ GST_DEBUG_OBJECT (basesrc, "sorted and normalized caps %" GST_PTR_FORMAT,
+ caps);
+
+ /* Each structure in the caps has been fixated, except for the
+ * interlace-mode and colorimetry. Now normalize the caps so we can
+ * enumerate the possibilities */
+ caps = gst_caps_normalize (caps);
for (i = 0; i < gst_caps_get_size (caps); ++i) {
- structure = gst_caps_get_structure (caps, i);
+ gst_v4l2_clear_error (&error);
+ if (fcaps)
+ gst_caps_unref (fcaps);
+
+ fcaps = gst_caps_copy_nth (caps, i);
+
+ /* try hard to avoid TRY_FMT since some UVC camera just crash when this
+ * is called at run-time. */
+ if (gst_v4l2_object_caps_is_subset (obj, fcaps)) {
+ gst_caps_unref (fcaps);
+ fcaps = gst_v4l2_object_get_current_caps (obj);
+ break;
+ }
- /* We are fixating to a reasonable 320x200 resolution
- and the maximum framerate resolution for that size */
- if (gst_structure_has_field (structure, "width"))
- gst_structure_fixate_field_nearest_int (structure, "width", 320);
+ /* Just check if the format is acceptable, once we know
+ * no buffers should be outstanding we try S_FMT.
+ *
+ * Basesrc will do an allocation query that
+ * should indirectly reclaim buffers, after that we can
+ * set the format and then configure our pool */
+ if (gst_v4l2_object_try_format (obj, fcaps, &error)) {
+ /* make sure the caps changed before doing anything */
+ if (gst_v4l2_object_caps_equal (obj, fcaps))
+ break;
- if (gst_structure_has_field (structure, "height"))
- gst_structure_fixate_field_nearest_int (structure, "height", 200);
+ v4l2src->renegotiation_adjust = v4l2src->offset + 1;
+ v4l2src->pending_set_fmt = TRUE;
+ break;
+ }
- if (gst_structure_has_field (structure, "framerate"))
- gst_structure_fixate_field_nearest_fraction (structure, "framerate",
- G_MAXINT, 1);
+ /* Only EIVAL make sense, report any other errors, this way we don't keep
+ * probing if the device got disconnected, or if it's firmware stopped
+ * responding */
+ if (error.error->code != GST_RESOURCE_ERROR_SETTINGS) {
+ i = G_MAXINT;
+ break;
+ }
+ }
- if (gst_structure_has_field (structure, "format"))
- gst_structure_fixate_field (structure, "format");
+ if (i >= gst_caps_get_size (caps)) {
+ gst_v4l2_error (v4l2src, &error);
+ if (fcaps)
+ gst_caps_unref (fcaps);
+ gst_caps_unref (caps);
+ return NULL;
}
- GST_DEBUG_OBJECT (basesrc, "fixated caps %" GST_PTR_FORMAT, caps);
+ gst_caps_unref (caps);
- caps = GST_BASE_SRC_CLASS (parent_class)->fixate (basesrc, caps);
+ GST_DEBUG_OBJECT (basesrc, "fixated caps %" GST_PTR_FORMAT, fcaps);
- return caps;
+ return fcaps;
}
-
static gboolean
gst_v4l2src_negotiate (GstBaseSrc * basesrc)
{
- GstV4l2Src *v4l2src;
- GstV4l2Object *obj;
GstCaps *thiscaps;
GstCaps *caps = NULL;
GstCaps *peercaps = NULL;
gboolean result = FALSE;
- v4l2src = GST_V4L2SRC (basesrc);
- obj = v4l2src->v4l2object;
-
- /* We don't allow renegotiation, just return TRUE in that case */
- if (GST_V4L2_IS_ACTIVE (obj))
- return TRUE;
-
/* first see what is possible on our source pad */
thiscaps = gst_pad_query_caps (GST_BASE_SRC_PAD (basesrc), NULL);
GST_DEBUG_OBJECT (basesrc, "caps of src: %" GST_PTR_FORMAT, thiscaps);
- LOG_CAPS (basesrc, thiscaps);
/* nothing or anything is allowed, we're done */
if (thiscaps == NULL || gst_caps_is_any (thiscaps))
/* get the peer caps without a filter as we'll filter ourselves later on */
peercaps = gst_pad_peer_query_caps (GST_BASE_SRC_PAD (basesrc), NULL);
GST_DEBUG_OBJECT (basesrc, "caps of peer: %" GST_PTR_FORMAT, peercaps);
- LOG_CAPS (basesrc, peercaps);
if (peercaps && !gst_caps_is_any (peercaps)) {
- GstCaps *icaps = NULL;
- int i;
-
/* Prefer the first caps we are compatible with that the peer proposed */
- for (i = 0; i < gst_caps_get_size (peercaps); i++) {
- /* get intersection */
- GstCaps *ipcaps = gst_caps_copy_nth (peercaps, i);
+ caps = gst_caps_intersect_full (peercaps, thiscaps,
+ GST_CAPS_INTERSECT_FIRST);
- GST_DEBUG_OBJECT (basesrc, "peer: %" GST_PTR_FORMAT, ipcaps);
- LOG_CAPS (basesrc, ipcaps);
+ GST_DEBUG_OBJECT (basesrc, "intersect: %" GST_PTR_FORMAT, caps);
- icaps = gst_caps_intersect (thiscaps, ipcaps);
- gst_caps_unref (ipcaps);
-
- if (!gst_caps_is_empty (icaps))
- break;
-
- gst_caps_unref (icaps);
- icaps = NULL;
- }
-
- GST_DEBUG_OBJECT (basesrc, "intersect: %" GST_PTR_FORMAT, icaps);
- LOG_CAPS (basesrc, icaps);
- if (icaps) {
- /* If there are multiple intersections pick the one with the smallest
- * resolution strictly bigger then the first peer caps */
- if (gst_caps_get_size (icaps) > 1) {
- GstStructure *s = gst_caps_get_structure (peercaps, 0);
- int best = 0;
- int twidth, theight;
- int width = G_MAXINT, height = G_MAXINT;
-
- if (gst_structure_get_int (s, "width", &twidth)
- && gst_structure_get_int (s, "height", &theight)) {
-
- /* Walk the structure backwards to get the first entry of the
- * smallest resolution bigger (or equal to) the preferred resolution)
- */
- for (i = gst_caps_get_size (icaps) - 1; i >= 0; i--) {
- GstStructure *is = gst_caps_get_structure (icaps, i);
- int w, h;
-
- if (gst_structure_get_int (is, "width", &w)
- && gst_structure_get_int (is, "height", &h)) {
- if (w >= twidth && w <= width && h >= theight && h <= height) {
- width = w;
- height = h;
- best = i;
- }
- }
- }
- }
-
- caps = gst_caps_copy_nth (icaps, best);
- gst_caps_unref (icaps);
- } else {
- caps = icaps;
- }
- }
gst_caps_unref (thiscaps);
} else {
/* no peer or peer have ANY caps, work with our own caps then */
caps = thiscaps;
}
- if (peercaps)
- gst_caps_unref (peercaps);
- if (caps) {
- caps = gst_caps_truncate (caps);
+ if (caps) {
/* now fixate */
if (!gst_caps_is_empty (caps)) {
- caps = gst_v4l2src_fixate (basesrc, caps);
+ GstStructure *pref = NULL;
+
+ if (peercaps && !gst_caps_is_any (peercaps))
+ pref = gst_caps_get_structure (peercaps, 0);
+
+ caps = gst_v4l2src_fixate (basesrc, caps, pref);
+
+ /* Fixating may fail as we now set the selected format */
+ if (!caps) {
+ result = FALSE;
+ goto done;
+ }
+
GST_DEBUG_OBJECT (basesrc, "fixated to: %" GST_PTR_FORMAT, caps);
- LOG_CAPS (basesrc, caps);
if (gst_caps_is_any (caps)) {
/* hmm, still anything, so element can do anything and
}
gst_caps_unref (caps);
}
+
+done:
+ if (peercaps)
+ gst_caps_unref (peercaps);
+
return result;
no_nego_needed:
}
static gboolean
-gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps)
+gst_v4l2src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
{
- GstV4l2Src *v4l2src;
- GstV4l2Object *obj;
-
- v4l2src = GST_V4L2SRC (src);
- obj = v4l2src->v4l2object;
+ GstV4l2Src *src = GST_V4L2SRC (bsrc);
+ gboolean ret = TRUE;
- /* make sure the caps changed before doing anything */
- if (gst_v4l2_object_caps_equal (obj, caps))
- return TRUE;
+ if (src->pending_set_fmt) {
+ GstCaps *caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (bsrc));
+ GstV4l2Error error = GST_V4L2_ERROR_INIT;
- /* make sure we stop capturing and dealloc buffers */
- if (!gst_v4l2_object_stop (obj))
- return FALSE;
+ caps = gst_caps_make_writable (caps);
+ if (!(ret = gst_v4l2src_set_format (src, caps, &error)))
+ gst_v4l2_error (src, &error);
- g_signal_emit (v4l2src, gst_v4l2_signals[SIGNAL_PRE_SET_FORMAT], 0,
- v4l2src->v4l2object->video_fd, caps);
+ gst_caps_unref (caps);
+ src->pending_set_fmt = FALSE;
+ } else if (gst_buffer_pool_is_active (src->v4l2object->pool)) {
+ /* Trick basesrc into not deactivating the active pool. Renegotiating here
+ * would otherwise turn off and on the camera. */
+ GstAllocator *allocator;
+ GstAllocationParams params;
+ GstBufferPool *pool;
+
+ gst_base_src_get_allocator (bsrc, &allocator, ¶ms);
+ pool = gst_base_src_get_buffer_pool (bsrc);
+
+ if (gst_query_get_n_allocation_params (query))
+ gst_query_set_nth_allocation_param (query, 0, allocator, ¶ms);
+ else
+ gst_query_add_allocation_param (query, allocator, ¶ms);
- if (!gst_v4l2_object_set_format (obj, caps))
- /* error already posted */
- return FALSE;
+ if (gst_query_get_n_allocation_pools (query))
+ gst_query_set_nth_allocation_pool (query, 0, pool,
+ src->v4l2object->info.size, 1, 0);
+ else
+ gst_query_add_allocation_pool (query, pool, src->v4l2object->info.size, 1,
+ 0);
- return TRUE;
-}
+ if (pool)
+ gst_object_unref (pool);
+ if (allocator)
+ gst_object_unref (allocator);
-static gboolean
-gst_v4l2src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
-{
- GstV4l2Src *src = GST_V4L2SRC (bsrc);
- gboolean ret = FALSE;
+ return GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
+ }
- if (gst_v4l2_object_decide_allocation (src->v4l2object, query))
- ret = GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
+ if (ret) {
+ ret = gst_v4l2_object_decide_allocation (src->v4l2object, query);
+ if (ret)
+ ret = GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
+ }
if (ret) {
if (!gst_buffer_pool_set_active (src->v4l2object->pool, TRUE))
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
v4l2src->offset = 0;
+ v4l2src->renegotiation_adjust = 0;
/* activate settings for first frame */
v4l2src->ctrl_time = 0;
if (!gst_v4l2_object_stop (obj))
return FALSE;
}
+
+ v4l2src->pending_set_fmt = FALSE;
+
return TRUE;
}
{
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
GstV4l2Object *obj = v4l2src->v4l2object;
+ GstV4l2BufferPool *pool = GST_V4L2_BUFFER_POOL_CAST (obj->pool);
GstFlowReturn ret;
GstClock *clock;
GstClockTime abs_time, base_time, timestamp, duration;
GstClockTime delay;
+ GstMessage *qos_msg;
- ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC (src), 0,
- obj->info.size, buf);
+ do {
+ ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC (src), 0,
+ obj->info.size, buf);
- if (G_UNLIKELY (ret != GST_FLOW_OK))
- goto alloc_failed;
+ if (G_UNLIKELY (ret != GST_FLOW_OK))
+ goto alloc_failed;
+
+ ret = gst_v4l2_buffer_pool_process (pool, buf);
- ret =
- gst_v4l2_buffer_pool_process (GST_V4L2_BUFFER_POOL_CAST (obj->pool), buf);
+ } while (ret == GST_V4L2_FLOW_CORRUPTED_BUFFER);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto error;
}
/* set buffer metadata */
- GST_BUFFER_OFFSET (*buf) = v4l2src->offset++;
- GST_BUFFER_OFFSET_END (*buf) = v4l2src->offset;
if (G_LIKELY (abs_time != GST_CLOCK_TIME_NONE)) {
/* the time now is the time of the clock minus the base time */
GST_INFO_OBJECT (src, "sync to %" GST_TIME_FORMAT " out ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (v4l2src->ctrl_time), GST_TIME_ARGS (timestamp));
+ /* use generated offset values only if there are not already valid ones
+ * set by the v4l2 device */
+ if (!GST_BUFFER_OFFSET_IS_VALID (*buf)
+ || !GST_BUFFER_OFFSET_END_IS_VALID (*buf)) {
+ GST_BUFFER_OFFSET (*buf) = v4l2src->offset++;
+ GST_BUFFER_OFFSET_END (*buf) = v4l2src->offset;
+ } else {
+ /* adjust raw v4l2 device sequence, will restart at null in case of renegotiation
+ * (streamoff/streamon) */
+ GST_BUFFER_OFFSET (*buf) += v4l2src->renegotiation_adjust;
+ GST_BUFFER_OFFSET_END (*buf) += v4l2src->renegotiation_adjust;
+ /* check for frame loss with given (from v4l2 device) buffer offset */
+ if ((v4l2src->offset != 0)
+ && (GST_BUFFER_OFFSET (*buf) != (v4l2src->offset + 1))) {
+ guint64 lost_frame_count = GST_BUFFER_OFFSET (*buf) - v4l2src->offset - 1;
+ GST_WARNING_OBJECT (v4l2src,
+ "lost frames detected: count = %" G_GUINT64_FORMAT " - ts: %"
+ GST_TIME_FORMAT, lost_frame_count, GST_TIME_ARGS (timestamp));
+
+ qos_msg = gst_message_new_qos (GST_OBJECT_CAST (v4l2src), TRUE,
+ GST_CLOCK_TIME_NONE, GST_CLOCK_TIME_NONE, timestamp,
+ GST_CLOCK_TIME_IS_VALID (duration) ? lost_frame_count *
+ duration : GST_CLOCK_TIME_NONE);
+ gst_element_post_message (GST_ELEMENT_CAST (v4l2src), qos_msg);
+
+ }
+ v4l2src->offset = GST_BUFFER_OFFSET (*buf);
+ }
+
GST_BUFFER_TIMESTAMP (*buf) = timestamp;
GST_BUFFER_DURATION (*buf) = duration;
}
error:
{
- GST_DEBUG_OBJECT (src, "error processing buffer %d (%s)", ret,
- gst_flow_get_name (ret));
+ gst_buffer_replace (buf, NULL);
+ if (ret == GST_V4L2_FLOW_LAST_BUFFER) {
+ GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
+ ("Driver returned a buffer with no payload, this most likely "
+ "indicate a bug in the driver."), (NULL));
+ ret = GST_FLOW_ERROR;
+ } else {
+ GST_DEBUG_OBJECT (src, "error processing buffer %d (%s)", ret,
+ gst_flow_get_name (ret));
+ }
return ret;
}
}
projects / platform / upstream / gst-plugins-good.git / blobdiff