#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
-
#include <string.h>
+
+#include <gst/interfaces/propertyprobe.h>
+
#include "v4l_calls.h"
#include "gstv4ltuner.h"
#ifdef HAVE_XVIDEO
#endif
#include "gstv4lcolorbalance.h"
-#include <gst/propertyprobe/propertyprobe.h>
-
-/* elementfactory information */
-static GstElementDetails gst_v4lelement_details =
-GST_ELEMENT_DETAILS ("Generic video4linux Element",
- "Generic/Video",
- "Generic plugin for handling common video4linux calls",
- "Ronald Bultje <rbultje@ronald.bitfreak.net>");
-/* V4lElement signals and args */
enum
{
- /* FILL ME */
- SIGNAL_OPEN,
- SIGNAL_CLOSE,
- LAST_SIGNAL
+ PROP_0,
+ PROP_DEVICE,
+ PROP_DEVICE_NAME,
+ PROP_FLAGS
};
-enum
-{
- ARG_0,
- ARG_DEVICE,
- ARG_DEVICE_NAME,
- ARG_FLAGS
-};
+static void gst_v4lelement_init_interfaces (GType type);
-static void gst_v4lelement_base_init (gpointer g_class);
-static void gst_v4lelement_class_init (GstV4lElementClass * klass);
-static void gst_v4lelement_init (GstV4lElement * v4lelement);
-static void gst_v4lelement_dispose (GObject * object);
-static void gst_v4lelement_set_property (GObject * object,
+GST_BOILERPLATE_FULL (GstV4lElement, gst_v4lelement, GstPushSrc,
+ GST_TYPE_PUSHSRC, gst_v4lelement_init_interfaces)
+
+
+ static void gst_v4lelement_dispose (GObject * object);
+ static void gst_v4lelement_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
-static void gst_v4lelement_get_property (GObject * object,
+ static void gst_v4lelement_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
-static GstElementStateReturn gst_v4lelement_change_state (GstElement * element);
-
+ static gboolean gst_v4lelement_start (GstBaseSrc * src);
+ static gboolean gst_v4lelement_stop (GstBaseSrc * src);
-static GstElementClass *parent_class = NULL;
-static guint gst_v4lelement_signals[LAST_SIGNAL] = { 0 };
-static gboolean
-gst_v4l_iface_supported (GstImplementsInterface * iface, GType iface_type)
+ static gboolean
+ gst_v4l_iface_supported (GstImplementsInterface * iface,
+ GType iface_type)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (iface);
GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe);
switch (prop_id) {
- case ARG_DEVICE:
+ case PROP_DEVICE:
gst_v4l_class_probe_devices (klass, FALSE);
break;
default:
gboolean ret = FALSE;
switch (prop_id) {
- case ARG_DEVICE:
+ case PROP_DEVICE:
ret = !gst_v4l_class_probe_devices (klass, TRUE);
break;
default:
GValueArray *array = NULL;
switch (prop_id) {
- case ARG_DEVICE:
+ case PROP_DEVICE:
array = gst_v4l_class_list_devices (klass);
break;
default:
return v4l_device_type;
}
-
-GType
-gst_v4lelement_get_type (void)
+static void
+gst_v4lelement_init_interfaces (GType type)
{
- static GType v4lelement_type = 0;
-
- if (!v4lelement_type) {
- static const GTypeInfo v4lelement_info = {
- sizeof (GstV4lElementClass),
- gst_v4lelement_base_init,
- NULL,
- (GClassInitFunc) gst_v4lelement_class_init,
- NULL,
- NULL,
- sizeof (GstV4lElement),
- 0,
- (GInstanceInitFunc) gst_v4lelement_init,
- NULL
- };
- static const GInterfaceInfo v4liface_info = {
- (GInterfaceInitFunc) gst_v4l_interface_init,
- NULL,
- NULL,
- };
- static const GInterfaceInfo v4l_tuner_info = {
- (GInterfaceInitFunc) gst_v4l_tuner_interface_init,
- NULL,
- NULL,
- };
+ static const GInterfaceInfo v4liface_info = {
+ (GInterfaceInitFunc) gst_v4l_interface_init,
+ NULL,
+ NULL,
+ };
+ static const GInterfaceInfo v4l_tuner_info = {
+ (GInterfaceInitFunc) gst_v4l_tuner_interface_init,
+ NULL,
+ NULL,
+ };
#ifdef HAVE_XVIDEO
- static const GInterfaceInfo v4l_xoverlay_info = {
- (GInterfaceInitFunc) gst_v4l_xoverlay_interface_init,
- NULL,
- NULL,
- };
+ static const GInterfaceInfo v4l_xoverlay_info = {
+ (GInterfaceInitFunc) gst_v4l_xoverlay_interface_init,
+ NULL,
+ NULL,
+ };
#endif
- static const GInterfaceInfo v4l_colorbalance_info = {
- (GInterfaceInitFunc) gst_v4l_color_balance_interface_init,
- NULL,
- NULL,
- };
- static const GInterfaceInfo v4l_propertyprobe_info = {
- (GInterfaceInitFunc) gst_v4l_property_probe_interface_init,
- NULL,
- NULL,
- };
-
- v4lelement_type = g_type_register_static (GST_TYPE_ELEMENT,
- "GstV4lElement", &v4lelement_info, 0);
-
- g_type_add_interface_static (v4lelement_type,
- GST_TYPE_IMPLEMENTS_INTERFACE, &v4liface_info);
- g_type_add_interface_static (v4lelement_type,
- GST_TYPE_TUNER, &v4l_tuner_info);
+ static const GInterfaceInfo v4l_colorbalance_info = {
+ (GInterfaceInitFunc) gst_v4l_color_balance_interface_init,
+ NULL,
+ NULL,
+ };
+ static const GInterfaceInfo v4l_propertyprobe_info = {
+ (GInterfaceInitFunc) gst_v4l_property_probe_interface_init,
+ NULL,
+ NULL,
+ };
+
+ g_type_add_interface_static (type,
+ GST_TYPE_IMPLEMENTS_INTERFACE, &v4liface_info);
+ g_type_add_interface_static (type, GST_TYPE_TUNER, &v4l_tuner_info);
#ifdef HAVE_XVIDEO
- g_type_add_interface_static (v4lelement_type,
- GST_TYPE_X_OVERLAY, &v4l_xoverlay_info);
+ g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &v4l_xoverlay_info);
#endif
- g_type_add_interface_static (v4lelement_type,
- GST_TYPE_COLOR_BALANCE, &v4l_colorbalance_info);
- g_type_add_interface_static (v4lelement_type,
- GST_TYPE_PROPERTY_PROBE, &v4l_propertyprobe_info);
- }
-
- return v4lelement_type;
+ g_type_add_interface_static (type,
+ GST_TYPE_COLOR_BALANCE, &v4l_colorbalance_info);
+ g_type_add_interface_static (type,
+ GST_TYPE_PROPERTY_PROBE, &v4l_propertyprobe_info);
}
static void
gst_v4lelement_base_init (gpointer g_class)
{
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GstV4lElementClass *klass = GST_V4LELEMENT_CLASS (g_class);
klass->devices = NULL;
-
- gst_element_class_set_details (gstelement_class, &gst_v4lelement_details);
}
static void
gst_v4lelement_class_init (GstV4lElementClass * klass)
{
GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
+ GstBaseSrcClass *basesrc_class;
gobject_class = (GObjectClass *) klass;
- gstelement_class = (GstElementClass *) klass;
+ basesrc_class = (GstBaseSrcClass *) klass;
- parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+ gobject_class->set_property = gst_v4lelement_set_property;
+ gobject_class->get_property = gst_v4lelement_get_property;
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE,
g_param_spec_string ("device", "Device", "Device location",
NULL, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE_NAME,
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE_NAME,
g_param_spec_string ("device_name", "Device name", "Name of the device",
NULL, G_PARAM_READABLE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FLAGS,
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FLAGS,
g_param_spec_flags ("flags", "Flags", "Device type flags",
GST_TYPE_V4L_DEVICE_FLAGS, 0, G_PARAM_READABLE));
- /* signals */
- gst_v4lelement_signals[SIGNAL_OPEN] =
- g_signal_new ("open", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstV4lElementClass, open),
- NULL, NULL, g_cclosure_marshal_VOID__STRING,
- G_TYPE_NONE, 1, G_TYPE_STRING);
- gst_v4lelement_signals[SIGNAL_CLOSE] =
- g_signal_new ("close", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstV4lElementClass, close),
- NULL, NULL, g_cclosure_marshal_VOID__STRING,
- G_TYPE_NONE, 1, G_TYPE_STRING);
-
- gobject_class->set_property = gst_v4lelement_set_property;
- gobject_class->get_property = gst_v4lelement_get_property;
-
- gstelement_class->change_state = gst_v4lelement_change_state;
+ basesrc_class->start = gst_v4lelement_start;
+ basesrc_class->stop = gst_v4lelement_stop;
gobject_class->dispose = gst_v4lelement_dispose;
}
gst_v4lelement_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
- GstV4lElement *v4lelement;
-
- g_return_if_fail (GST_IS_V4LELEMENT (object));
- v4lelement = GST_V4LELEMENT (object);
+ GstV4lElement *v4lelement = GST_V4LELEMENT (object);
switch (prop_id) {
- case ARG_DEVICE:
+ case PROP_DEVICE:
if (v4lelement->videodev)
g_free (v4lelement->videodev);
v4lelement->videodev = g_strdup (g_value_get_string (value));
gst_v4lelement_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
- GstV4lElement *v4lelement;
-
- g_return_if_fail (GST_IS_V4LELEMENT (object));
- v4lelement = GST_V4LELEMENT (object);
+ GstV4lElement *v4lelement = GST_V4LELEMENT (object);
switch (prop_id) {
- case ARG_DEVICE:
+ case PROP_DEVICE:
g_value_set_string (value, v4lelement->videodev);
break;
- case ARG_DEVICE_NAME:{
+ case PROP_DEVICE_NAME:{
gchar *new = NULL;
if (GST_V4L_IS_OPEN (v4lelement))
g_value_set_string (value, new);
break;
}
- case ARG_FLAGS:{
+ case PROP_FLAGS:{
guint flags = 0;
if (GST_V4L_IS_OPEN (v4lelement)) {
}
}
-
-static GstElementStateReturn
-gst_v4lelement_change_state (GstElement * element)
+static gboolean
+gst_v4lelement_start (GstBaseSrc * src)
{
- GstV4lElement *v4lelement;
-
- g_return_val_if_fail (GST_IS_V4LELEMENT (element), GST_STATE_FAILURE);
-
- v4lelement = GST_V4LELEMENT (element);
+ GstV4lElement *v4lelement = GST_V4LELEMENT (src);
- /* if going down into NULL state, close the device if it's open
- * if going to READY, open the device (and set some options)
- */
- switch (GST_STATE_TRANSITION (element)) {
- case GST_STATE_NULL_TO_READY:
- if (!gst_v4l_open (v4lelement))
- return GST_STATE_FAILURE;
+ if (!gst_v4l_open (v4lelement))
+ return FALSE;
#ifdef HAVE_XVIDEO
- gst_v4l_xoverlay_open (v4lelement);
+ gst_v4l_xoverlay_open (v4lelement);
#endif
- g_signal_emit (G_OBJECT (v4lelement),
- gst_v4lelement_signals[SIGNAL_OPEN], 0, v4lelement->videodev);
- break;
+ return TRUE;
+}
+
+static gboolean
+gst_v4lelement_stop (GstBaseSrc * src)
+{
+ GstV4lElement *v4lelement = GST_V4LELEMENT (src);
- case GST_STATE_READY_TO_NULL:
#ifdef HAVE_XVIDEO
- gst_v4l_xoverlay_close (v4lelement);
+ gst_v4l_xoverlay_close (v4lelement);
#endif
- if (!gst_v4l_close (v4lelement))
- return GST_STATE_FAILURE;
-
- g_signal_emit (G_OBJECT (v4lelement),
- gst_v4lelement_signals[SIGNAL_CLOSE], 0, v4lelement->videodev);
- break;
- }
-
- if (GST_ELEMENT_CLASS (parent_class)->change_state)
- return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+ if (!gst_v4l_close (v4lelement))
+ return FALSE;
- return GST_STATE_SUCCESS;
+ return TRUE;
}
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- e Boston, MA 02111-1307, USA.
+ * Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "v4lsrc_calls.h"
#include <sys/ioctl.h>
-/* elementfactory information */
+
static GstElementDetails gst_v4lsrc_details =
GST_ELEMENT_DETAILS ("Video (video4linux/raw) Source",
"Source/Video",
"Reads raw frames from a video4linux (BT8x8) device",
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
+
GST_DEBUG_CATEGORY (v4lsrc_debug);
#define GST_CAT_DEFAULT v4lsrc_debug
-/* V4lSrc signals and args */
-enum
-{
- /* FILL ME */
- SIGNAL_FRAME_CAPTURE,
- SIGNAL_FRAME_DROP,
- SIGNAL_FRAME_INSERT,
- LAST_SIGNAL
-};
-#define DEFAULT_SYNC_MODE GST_V4LSRC_SYNC_MODE_CLOCK
-#define DEFAULT_COPY_MODE FALSE
-/* arguments */
enum
{
- ARG_0,
- ARG_NUMBUFS,
- ARG_BUFSIZE,
- ARG_SYNC_MODE,
- ARG_COPY_MODE,
- ARG_AUTOPROBE,
- ARG_AUTOPROBE_FPS,
- ARG_LATENCY_OFFSET
+ PROP_0,
+ PROP_AUTOPROBE,
+ PROP_AUTOPROBE_FPS,
+ PROP_TIMESTAMP_OFFSET
};
-GST_FORMATS_FUNCTION (GstPad *, gst_v4lsrc_get_formats,
- GST_FORMAT_TIME, GST_FORMAT_DEFAULT);
-GST_QUERY_TYPE_FUNCTION (GstPad *, gst_v4lsrc_get_query_types,
- GST_QUERY_POSITION);
-#define GST_TYPE_V4LSRC_SYNC_MODE (gst_v4lsrc_sync_mode_get_type())
-static GType
-gst_v4lsrc_sync_mode_get_type (void)
-{
- static GType v4lsrc_sync_mode_type = 0;
- static GEnumValue v4lsrc_sync_mode[] = {
- {GST_V4LSRC_SYNC_MODE_CLOCK, "0", "Sync to the pipeline clock"},
- {GST_V4LSRC_SYNC_MODE_PRIVATE_CLOCK, "1", "Sync to a private clock"},
- {GST_V4LSRC_SYNC_MODE_FIXED_FPS, "2", "Use Fixed fps"},
- {GST_V4LSRC_SYNC_MODE_NONE, "3", "No Sync"},
- {0, NULL, NULL},
- };
-
- if (!v4lsrc_sync_mode_type) {
- v4lsrc_sync_mode_type =
- g_enum_register_static ("GstV4lSrcSyncMode", v4lsrc_sync_mode);
- }
- return v4lsrc_sync_mode_type;
-}
+GST_BOILERPLATE (GstV4lSrc, gst_v4lsrc, GstV4lElement, GST_TYPE_V4LELEMENT);
+
+
+/* basesrc methods */
+static gboolean gst_v4lsrc_start (GstBaseSrc * src);
+static gboolean gst_v4lsrc_stop (GstBaseSrc * src);
+static gboolean gst_v4lsrc_set_caps (GstBaseSrc * src, GstCaps * caps);
+static GstCaps *gst_v4lsrc_get_caps (GstBaseSrc * src);
+static GstFlowReturn gst_v4lsrc_create (GstPushSrc * src, GstBuffer ** out);
+
+static void gst_v4lsrc_fixate (GstPad * pad, GstCaps * caps);
-/* structure for buffer private data referencing element and frame number */
-typedef struct
-{
- GstV4lSrc *v4lsrc;
- int num;
-}
-v4lsrc_private_t;
-
-/* init functions */
-static void gst_v4lsrc_base_init (gpointer g_class);
-static void gst_v4lsrc_class_init (GstV4lSrcClass * klass);
-static void gst_v4lsrc_init (GstV4lSrc * v4lsrc);
-
-/* parent class virtual functions */
-static void gst_v4lsrc_open (GstElement * element, const gchar * device);
-static void gst_v4lsrc_close (GstElement * element, const gchar * device);
-
-/* pad/info functions */
-static gboolean gst_v4lsrc_src_convert (GstPad * pad,
- GstFormat src_format,
- gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
-static gboolean gst_v4lsrc_src_query (GstPad * pad,
- GstQueryType type, GstFormat * format, gint64 * value);
-
-/* buffer functions */
-static GstPadLinkReturn gst_v4lsrc_src_link (GstPad * pad,
- const GstCaps * caps);
-static GstCaps *gst_v4lsrc_fixate (GstPad * pad, const GstCaps * caps);
-static GstCaps *gst_v4lsrc_getcaps (GstPad * pad);
-static GstData *gst_v4lsrc_get (GstPad * pad);
-
-/* get/set params */
static void gst_v4lsrc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_v4lsrc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
-/* state handling */
-static GstElementStateReturn gst_v4lsrc_change_state (GstElement * element);
-
-/* set_clock function for a/V sync */
-static void gst_v4lsrc_set_clock (GstElement * element, GstClock * clock);
-
-/* requeue buffer if it's back available */
-static void gst_v4lsrc_buffer_free (GstBuffer * buffer);
-
-static GstElementClass *parent_class = NULL;
-static guint gst_v4lsrc_signals[LAST_SIGNAL] = { 0 };
-
-
-GType
-gst_v4lsrc_get_type (void)
-{
- static GType v4lsrc_type = 0;
-
- if (!v4lsrc_type) {
- static const GTypeInfo v4lsrc_info = {
- sizeof (GstV4lSrcClass),
- gst_v4lsrc_base_init,
- NULL,
- (GClassInitFunc) gst_v4lsrc_class_init,
- NULL,
- NULL,
- sizeof (GstV4lSrc),
- 0,
- (GInstanceInitFunc) gst_v4lsrc_init,
- NULL
- };
-
- v4lsrc_type =
- g_type_register_static (GST_TYPE_V4LELEMENT, "GstV4lSrc", &v4lsrc_info,
- 0);
- }
- return v4lsrc_type;
-}
static void
gst_v4lsrc_base_init (gpointer g_class)
{
- GstPadTemplate *src_template;
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (gstelement_class, &gst_v4lsrc_details);
- src_template = gst_pad_template_new ("src",
- GST_PAD_SRC, GST_PAD_ALWAYS, gst_caps_new_any ());
-
- gst_element_class_add_pad_template (gstelement_class, src_template);
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ gst_caps_new_any ()));
}
static void
gst_v4lsrc_class_init (GstV4lSrcClass * klass)
{
GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
- GstV4lElementClass *v4lelement_class;
+ GstBaseSrcClass *basesrc_class;
+ GstPushSrcClass *pushsrc_class;
gobject_class = (GObjectClass *) klass;
- gstelement_class = (GstElementClass *) klass;
- v4lelement_class = (GstV4lElementClass *) klass;
-
- parent_class = g_type_class_ref (GST_TYPE_V4LELEMENT);
-
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUMBUFS,
- g_param_spec_int ("num_buffers", "Num Buffers", "Number of buffers",
- 0, G_MAXINT, 0, G_PARAM_READABLE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BUFSIZE,
- g_param_spec_int ("buffer_size", "Buffer Size", "Size of buffers",
- 0, G_MAXINT, 0, G_PARAM_READABLE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SYNC_MODE,
- g_param_spec_enum ("sync_mode", "Sync mode",
- "Method to use for timestamping captured frames",
- GST_TYPE_V4LSRC_SYNC_MODE, DEFAULT_SYNC_MODE, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COPY_MODE,
- g_param_spec_boolean ("copy_mode", "Copy mode",
- "Don't send out HW buffers, send copy instead", DEFAULT_COPY_MODE,
- G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_AUTOPROBE,
+ basesrc_class = (GstBaseSrcClass *) klass;
+ pushsrc_class = (GstPushSrcClass *) klass;
+
+ gobject_class->set_property = gst_v4lsrc_set_property;
+ gobject_class->get_property = gst_v4lsrc_get_property;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_AUTOPROBE,
g_param_spec_boolean ("autoprobe", "Autoprobe",
"Whether the device should be probed for all possible features",
TRUE, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_AUTOPROBE_FPS,
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_AUTOPROBE_FPS,
g_param_spec_boolean ("autoprobe-fps", "Autoprobe FPS",
"Whether the device should be probed for framerates",
TRUE, G_PARAM_READWRITE));
- /* FIXME: this should have been a 64 bit int instead, because 3 seconds
- * overflows 32 bit nanosecond values. However, this is an ABI change,
- * so we're saving it for 0.9, and then we can also rename the property
- * to something that makes more sense, like, timestamp-offset */
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LATENCY_OFFSET,
- g_param_spec_int ("latency-offset", "Latency offset",
- "A latency offset subtracted from timestamps set on buffers (in ns)",
- G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
-
- /* signals */
- gst_v4lsrc_signals[SIGNAL_FRAME_CAPTURE] =
- g_signal_new ("frame-capture", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstV4lSrcClass, frame_capture), NULL,
- NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
- gst_v4lsrc_signals[SIGNAL_FRAME_DROP] =
- g_signal_new ("frame-drop", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GstV4lSrcClass, frame_drop), NULL, NULL,
- g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
- gst_v4lsrc_signals[SIGNAL_FRAME_INSERT] =
- g_signal_new ("frame-insert", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstV4lSrcClass, frame_insert), NULL,
- NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+ g_object_class_install_property (G_OBJECT_CLASS (klass),
+ PROP_TIMESTAMP_OFFSET, g_param_spec_int64 ("timestamp-offset",
+ "Timestamp offset",
+ "A time offset subtracted from timestamps set on buffers (in ns)",
+ G_MININT64, G_MAXINT64, 0, G_PARAM_READWRITE));
GST_DEBUG_CATEGORY_INIT (v4lsrc_debug, "v4lsrc", 0, "V4L source element");
- gobject_class->set_property = gst_v4lsrc_set_property;
- gobject_class->get_property = gst_v4lsrc_get_property;
-
- gstelement_class->change_state = gst_v4lsrc_change_state;
- gstelement_class->set_clock = gst_v4lsrc_set_clock;
+ basesrc_class->get_caps = gst_v4lsrc_get_caps;
+ basesrc_class->set_caps = gst_v4lsrc_set_caps;
+ basesrc_class->start = gst_v4lsrc_start;
+ basesrc_class->stop = gst_v4lsrc_stop;
- v4lelement_class->open = gst_v4lsrc_open;
- v4lelement_class->close = gst_v4lsrc_close;
+ pushsrc_class->create = gst_v4lsrc_create;
}
static void
gst_v4lsrc_init (GstV4lSrc * v4lsrc)
{
- GstElementClass *klass = GST_ELEMENT_GET_CLASS (v4lsrc);
-
- GST_FLAG_SET (GST_ELEMENT (v4lsrc), GST_ELEMENT_THREAD_SUGGESTED);
-
- v4lsrc->srcpad =
- gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
- "src"), "src");
- gst_element_add_pad (GST_ELEMENT (v4lsrc), v4lsrc->srcpad);
-
- gst_pad_set_get_function (v4lsrc->srcpad, gst_v4lsrc_get);
- gst_pad_set_getcaps_function (v4lsrc->srcpad, gst_v4lsrc_getcaps);
- gst_pad_set_fixate_function (v4lsrc->srcpad, gst_v4lsrc_fixate);
- gst_pad_set_link_function (v4lsrc->srcpad, gst_v4lsrc_src_link);
- gst_pad_set_convert_function (v4lsrc->srcpad, gst_v4lsrc_src_convert);
- gst_pad_set_formats_function (v4lsrc->srcpad, gst_v4lsrc_get_formats);
- gst_pad_set_query_function (v4lsrc->srcpad, gst_v4lsrc_src_query);
- gst_pad_set_query_type_function (v4lsrc->srcpad, gst_v4lsrc_get_query_types);
-
v4lsrc->buffer_size = 0;
- /* no clock */
- v4lsrc->clock = NULL;
-
- /* no colourspaces */
- v4lsrc->colourspaces = NULL;
-
- v4lsrc->syncmode = DEFAULT_SYNC_MODE;
- v4lsrc->copy_mode = DEFAULT_COPY_MODE;
+ /* no colorspaces */
+ v4lsrc->colorspaces = NULL;
v4lsrc->is_capturing = FALSE;
v4lsrc->autoprobe = TRUE;
v4lsrc->autoprobe_fps = TRUE;
- v4lsrc->latency_offset = 0;
+ v4lsrc->timestamp_offset = 0;
v4lsrc->fps_list = NULL;
-}
-
-static gint all_palettes[] = {
- VIDEO_PALETTE_YUV422,
- VIDEO_PALETTE_YUV420P,
- VIDEO_PALETTE_UYVY,
- VIDEO_PALETTE_YUV411P,
- VIDEO_PALETTE_YUV422P,
- VIDEO_PALETTE_YUV410P,
- VIDEO_PALETTE_YUV411,
- VIDEO_PALETTE_RGB555,
- VIDEO_PALETTE_RGB565,
- VIDEO_PALETTE_RGB24,
- VIDEO_PALETTE_RGB32,
- -1
-};
-static void
-gst_v4lsrc_open (GstElement * element, const gchar * device)
-{
- GstV4lSrc *v4lsrc = GST_V4LSRC (element);
- GstV4lElement *v4l = GST_V4LELEMENT (v4lsrc);
- gint width = v4l->vcap.minwidth;
- gint height = v4l->vcap.minheight;
- gint i;
+ gst_pad_set_fixatecaps_function (GST_BASE_SRC_PAD (v4lsrc),
+ gst_v4lsrc_fixate);
- GST_DEBUG_OBJECT (v4lsrc, "Checking supported palettes");
- for (i = 0; all_palettes[i] != -1; i++) {
- /* try palette out */
- if (!gst_v4lsrc_try_capture (v4lsrc, width, height, all_palettes[i]))
- continue;
- GST_DEBUG_OBJECT (v4lsrc, "Added palette %d (%s) to supported list",
- all_palettes[i], gst_v4lsrc_palette_name (all_palettes[i]));
- v4lsrc->colourspaces = g_list_append (v4lsrc->colourspaces,
- GINT_TO_POINTER (all_palettes[i]));
- }
- GST_DEBUG_OBJECT (v4lsrc, "%d palette(s) supported",
- g_list_length (v4lsrc->colourspaces));
+ gst_base_src_set_live (GST_BASE_SRC (v4lsrc), TRUE);
}
static void
-gst_v4lsrc_close (GstElement * element, const gchar * device)
+gst_v4lsrc_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
{
- GstV4lSrc *v4lsrc = GST_V4LSRC (element);
+ GstV4lSrc *v4lsrc = GST_V4LSRC (object);
- g_list_free (v4lsrc->colourspaces);
- v4lsrc->colourspaces = NULL;
-}
-
-/* get a list of possible framerates
- * this is only done for webcams;
- * other devices return NULL here.
- * this function takes a LONG time to execute.
- */
-static GValue *
-gst_v4lsrc_get_fps_list (GstV4lSrc * v4lsrc)
-{
- gint fps_index;
- gfloat fps;
- struct video_window *vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
- GstV4lElement *v4lelement = GST_V4LELEMENT (v4lsrc);
-
- /* check if we have vwin window properties giving a framerate,
- * as is done for webcams
- * See http://www.smcc.demon.nl/webcam/api.html
- * which is used for the Philips and qce-ga drivers */
- fps_index = (vwin->flags >> 16) & 0x3F; /* 6 bit index for framerate */
-
- /* webcams have a non-zero fps_index */
- if (fps_index == 0) {
- GST_DEBUG_OBJECT (v4lsrc, "fps_index is 0, no webcam");
- return NULL;
- }
- GST_DEBUG_OBJECT (v4lsrc, "fps_index is %d, so webcam", fps_index);
-
- {
- gfloat current_fps;
- int i;
- GValue *list = NULL;
- GValue value = { 0 };
-
- /* webcam detected, so try all framerates and return a list */
-
- list = g_new0 (GValue, 1);
- g_value_init (list, GST_TYPE_LIST);
-
- /* index of 16 corresponds to 15 fps */
- current_fps = fps_index * 15.0 / 16;
- GST_DEBUG_OBJECT (v4lsrc, "device reports fps of %.4f", current_fps);
- for (i = 0; i < 63; ++i) {
- /* set bits 16 to 21 to 0 */
- vwin->flags &= (0x3F00 - 1);
- /* set bits 16 to 21 to the index */
- vwin->flags |= i << 16;
- if (gst_v4l_set_window_properties (v4lelement)) {
- /* setting it succeeded. FIXME: get it and check. */
- fps = i * 15.0 / 16;
- g_value_init (&value, G_TYPE_DOUBLE);
- g_value_set_double (&value, fps);
- gst_value_list_append_value (list, &value);
- g_value_unset (&value);
- }
- }
- /* FIXME: set back the original fps_index */
- vwin->flags &= (0x3F00 - 1);
- vwin->flags |= fps_index << 16;
- gst_v4l_set_window_properties (v4lelement);
- return list;
+ switch (prop_id) {
+ case PROP_AUTOPROBE:
+ g_return_if_fail (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc)));
+ v4lsrc->autoprobe = g_value_get_boolean (value);
+ break;
+ case PROP_AUTOPROBE_FPS:
+ g_return_if_fail (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc)));
+ v4lsrc->autoprobe_fps = g_value_get_boolean (value);
+ break;
+ case PROP_TIMESTAMP_OFFSET:
+ v4lsrc->timestamp_offset = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
}
- return NULL;
}
-static gboolean
-gst_v4lsrc_src_convert (GstPad * pad,
- GstFormat src_format,
- gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
-{
- GstV4lSrc *v4lsrc;
- gdouble fps;
- v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
-
- if ((fps = gst_v4lsrc_get_fps (v4lsrc)) == 0)
- return FALSE;
+static void
+gst_v4lsrc_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstV4lSrc *v4lsrc = GST_V4LSRC (object);
- switch (src_format) {
- case GST_FORMAT_TIME:
- switch (*dest_format) {
- case GST_FORMAT_DEFAULT:
- *dest_value = src_value * fps / GST_SECOND;
- break;
- default:
- return FALSE;
- }
+ switch (prop_id) {
+ case PROP_AUTOPROBE:
+ g_value_set_boolean (value, v4lsrc->autoprobe);
break;
-
- case GST_FORMAT_DEFAULT:
- switch (*dest_format) {
- case GST_FORMAT_TIME:
- *dest_value = src_value * GST_SECOND / fps;
- break;
- default:
- return FALSE;
- }
+ case PROP_AUTOPROBE_FPS:
+ g_value_set_boolean (value, v4lsrc->autoprobe_fps);
+ break;
+ case PROP_TIMESTAMP_OFFSET:
+ g_value_set_int (value, v4lsrc->timestamp_offset);
break;
-
default:
- return FALSE;
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
}
-
- return TRUE;
}
-static gboolean
-gst_v4lsrc_src_query (GstPad * pad,
- GstQueryType type, GstFormat * format, gint64 * value)
+G_GNUC_UNUSED static void
+gst_v4lsrc_fixate (GstPad * pad, GstCaps * caps)
{
+ GstStructure *structure;
+ int i;
+ int targetwidth, targetheight;
GstV4lSrc *v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
- gboolean res = TRUE;
- gdouble fps;
-
- if ((fps = gst_v4lsrc_get_fps (v4lsrc)) == 0)
- return FALSE;
+ struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
+ struct video_window *vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
- switch (type) {
- case GST_QUERY_POSITION:
- switch (*format) {
- case GST_FORMAT_TIME:
- *value = v4lsrc->handled * GST_SECOND / fps;
- break;
- case GST_FORMAT_DEFAULT:
- *value = v4lsrc->handled;
- break;
- default:
- res = FALSE;
- break;
- }
- break;
- default:
- res = FALSE;
- break;
+ if (GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
+ GST_DEBUG_OBJECT (v4lsrc, "device reported w: %d-%d, h: %d-%d",
+ vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight);
+ targetwidth = vcap->minwidth;
+ targetheight = vcap->minheight;
+ /* if we can get the current vwin settings, we use those to fixate */
+ if (!gst_v4l_get_capabilities (GST_V4LELEMENT (v4lsrc)))
+ GST_DEBUG_OBJECT (v4lsrc, "failed getting capabilities");
+ else {
+ targetwidth = vwin->width;
+ targetheight = vwin->height;
+ }
+ } else {
+ GST_DEBUG_OBJECT (v4lsrc, "device closed, guessing");
+ targetwidth = 320;
+ targetheight = 200;
}
- return res;
+ GST_DEBUG_OBJECT (v4lsrc, "targetting %dx%d", targetwidth, targetheight);
+
+ for (i = 0; i < gst_caps_get_size (caps); ++i) {
+ structure = gst_caps_get_structure (caps, i);
+
+ gst_caps_structure_fixate_field_nearest_int (structure, "width",
+ targetwidth);
+ gst_caps_structure_fixate_field_nearest_int (structure, "height",
+ targetheight);
+ }
}
+static gint all_palettes[] = {
+ VIDEO_PALETTE_YUV422,
+ VIDEO_PALETTE_YUV420P,
+ VIDEO_PALETTE_UYVY,
+ VIDEO_PALETTE_YUV411P,
+ VIDEO_PALETTE_YUV422P,
+ VIDEO_PALETTE_YUV410P,
+ VIDEO_PALETTE_YUV411,
+ VIDEO_PALETTE_RGB555,
+ VIDEO_PALETTE_RGB565,
+ VIDEO_PALETTE_RGB24,
+ VIDEO_PALETTE_RGB32,
+ -1
+};
+
static GstCaps *
gst_v4lsrc_palette_to_caps (int palette)
{
break;
case VIDEO_PALETTE_RGB32:
caps = gst_caps_from_string ("video/x-raw-rgb, "
- "bpp = (int) 24, "
- "depth = (int) 32, "
+ "bpp = (int) 32, "
+ "depth = (int) 24, "
"endianness = (int) BIG_ENDIAN, "
"red_mask = 0xFF000000, "
"green_mask = 0x00FF0000, " "blue_mask = 0x0000FF00");
return caps;
}
-static GstPadLinkReturn
-gst_v4lsrc_src_link (GstPad * pad, const GstCaps * vscapslist)
+static GstCaps *
+gst_v4lsrc_get_caps (GstBaseSrc * src)
+{
+ GstCaps *list;
+ GstV4lSrc *v4lsrc = GST_V4LSRC (src);
+ struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
+ gint width = GST_V4LELEMENT (src)->vcap.minwidth;
+ gint height = GST_V4LELEMENT (src)->vcap.minheight;
+ gint i;
+ gdouble fps;
+ GList *item;
+
+ if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
+ return gst_v4lsrc_get_any_caps ();
+ }
+
+ if (!v4lsrc->autoprobe) {
+ /* FIXME: query current caps and return those, with _any appended */
+ return gst_v4lsrc_get_any_caps ();
+ }
+
+ if (!v4lsrc->colorspaces) {
+ GST_DEBUG_OBJECT (v4lsrc, "Checking supported palettes");
+ for (i = 0; all_palettes[i] != -1; i++) {
+ /* try palette out */
+ if (!gst_v4lsrc_try_capture (v4lsrc, width, height, all_palettes[i]))
+ continue;
+ GST_DEBUG_OBJECT (v4lsrc, "Added palette %d (%s) to supported list",
+ all_palettes[i], gst_v4lsrc_palette_name (all_palettes[i]));
+ v4lsrc->colorspaces = g_list_append (v4lsrc->colorspaces,
+ GINT_TO_POINTER (all_palettes[i]));
+ }
+ GST_DEBUG_OBJECT (v4lsrc, "%d palette(s) supported",
+ g_list_length (v4lsrc->colorspaces));
+ if (v4lsrc->autoprobe_fps) {
+ GST_DEBUG_OBJECT (v4lsrc, "autoprobing framerates");
+ v4lsrc->fps_list = gst_v4lsrc_get_fps_list (v4lsrc);
+ }
+ }
+
+ fps = gst_v4lsrc_get_fps (v4lsrc);
+
+ list = gst_caps_new_empty ();
+ for (item = v4lsrc->colorspaces; item != NULL; item = item->next) {
+ GstCaps *one;
+
+ one = gst_v4lsrc_palette_to_caps (GPOINTER_TO_INT (item->data));
+ if (!one) {
+ GST_WARNING_OBJECT (v4lsrc, "Palette %d gave no caps\n",
+ GPOINTER_TO_INT (item->data));
+ continue;
+ }
+
+ GST_DEBUG_OBJECT (v4lsrc,
+ "Device reports w: %d-%d, h: %d-%d, fps: %f for palette %d",
+ vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight, fps,
+ GPOINTER_TO_INT (item->data));
+
+ if (vcap->minwidth < vcap->maxwidth) {
+ gst_caps_set_simple (one, "width", GST_TYPE_INT_RANGE, vcap->minwidth,
+ vcap->maxwidth, NULL);
+ } else {
+ gst_caps_set_simple (one, "width", G_TYPE_INT, vcap->minwidth, NULL);
+ }
+ if (vcap->minheight < vcap->maxheight) {
+ gst_caps_set_simple (one, "height", GST_TYPE_INT_RANGE, vcap->minheight,
+ vcap->maxheight, NULL);
+ } else {
+ gst_caps_set_simple (one, "height", G_TYPE_INT, vcap->minheight, NULL);
+ }
+
+ if (v4lsrc->autoprobe_fps) {
+ if (v4lsrc->fps_list) {
+ GstStructure *structure = gst_caps_get_structure (one, 0);
+
+ gst_structure_set_value (structure, "framerate", v4lsrc->fps_list);
+ } else {
+ gst_caps_set_simple (one, "framerate", G_TYPE_DOUBLE, fps, NULL);
+ }
+ } else {
+ gst_caps_set_simple (one, "framerate", GST_TYPE_DOUBLE_RANGE,
+ (gdouble) 1.0, (gdouble) 100.0, NULL);
+ }
+
+ GST_DEBUG_OBJECT (v4lsrc, "caps: %" GST_PTR_FORMAT, one);
+ gst_caps_append (list, one);
+ }
+
+ return list;
+}
+
+static gboolean
+gst_v4lsrc_set_caps (GstBaseSrc * src, GstCaps * caps)
{
GstV4lSrc *v4lsrc;
guint32 fourcc;
gint bpp, depth, w, h, palette = -1;
gdouble fps;
GstStructure *structure;
- gboolean was_capturing;
struct video_window *vwin;
- /* if your fourcc stays sexy then something is wrong */
- fourcc = GST_MAKE_FOURCC ('S', 'E', 'X', 'Y');
-
- v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
+ v4lsrc = GST_V4LSRC (src);
vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
- was_capturing = v4lsrc->is_capturing;
-
- /* in case the buffers are active (which means that we already
- * did capsnego before and didn't clean up), clean up anyways */
- if (GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc))) {
- if (was_capturing) {
- if (!gst_v4lsrc_capture_stop (v4lsrc))
- return GST_PAD_LINK_REFUSED;
- }
+
+ /* if we're not open, punt -- we'll get setcaps'd later via negotiate */
+ if (!GST_V4L_IS_OPEN (v4lsrc))
+ return FALSE;
+
+ /* make sure we stop capturing and dealloc buffers */
+ if (GST_V4L_IS_ACTIVE (v4lsrc)) {
+ if (!gst_v4lsrc_capture_stop (v4lsrc))
+ return FALSE;
if (!gst_v4lsrc_capture_deinit (v4lsrc))
- return GST_PAD_LINK_REFUSED;
- } else if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
- return GST_PAD_LINK_DELAYED;
+ return FALSE;
}
- /* FIXME: setting the first one is just stupid. We should loop */
- structure = gst_caps_get_structure (vscapslist, 0);
+ /* it's fixed, one struct */
+ structure = gst_caps_get_structure (caps, 0);
- if (!strcmp (gst_structure_get_name (structure), "video/x-raw-yuv"))
+ if (strcmp (gst_structure_get_name (structure), "video/x-raw-yuv") == 0)
gst_structure_get_fourcc (structure, "format", &fourcc);
else
fourcc = GST_MAKE_FOURCC ('R', 'G', 'B', ' ');
/* set bits 16 to 21 to the index */
vwin->flags |= fps_index << 16;
if (!gst_v4l_set_window_properties (GST_V4LELEMENT (v4lsrc))) {
- return GST_PAD_LINK_REFUSED;
+ return FALSE;
}
}
if (palette == -1) {
GST_WARNING_OBJECT (v4lsrc, "palette for fourcc " GST_FOURCC_FORMAT
" is -1, refusing link", GST_FOURCC_ARGS (fourcc));
- return GST_PAD_LINK_REFUSED;
+ return FALSE;
}
GST_DEBUG_OBJECT (v4lsrc, "trying to set_capture %dx%d, palette %d",
if (!gst_v4lsrc_set_capture (v4lsrc, w, h, palette)) {
GST_WARNING_OBJECT (v4lsrc, "could not set_capture %dx%d, palette %d",
w, h, palette);
- return GST_PAD_LINK_REFUSED;
+ return FALSE;
}
/* first try the negotiated settings using try_capture */
if (!gst_v4lsrc_try_capture (v4lsrc, w, h, palette)) {
GST_DEBUG_OBJECT (v4lsrc, "failed trying palette %d for %dx%d", palette,
w, h);
- return GST_PAD_LINK_REFUSED;
+ return FALSE;
}
if (!gst_v4lsrc_capture_init (v4lsrc))
- return GST_PAD_LINK_REFUSED;
-
- if (was_capturing || GST_STATE (v4lsrc) == GST_STATE_PLAYING) {
- if (!gst_v4lsrc_capture_start (v4lsrc))
- return GST_PAD_LINK_REFUSED;
- }
-
- return GST_PAD_LINK_OK;
-}
-
-static GstCaps *
-gst_v4lsrc_fixate (GstPad * pad, const GstCaps * caps)
-{
- GstStructure *structure;
- GstCaps *newcaps;
- int i;
- int targetwidth, targetheight;
- GstV4lSrc *v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
- struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
- struct video_window *vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
-
- /* if device not yet open, no way to fixate */
- if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
- GST_DEBUG_OBJECT (v4lsrc, "device closed, cannot fixate");
- return NULL;
- }
-
- GST_DEBUG_OBJECT (v4lsrc, "device reported w: %d-%d, h: %d-%d",
- vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight);
- targetwidth = vcap->minwidth;
- targetheight = vcap->minheight;
-
- /* if we can get the current vwin settings, we use those to fixate */
- if (!gst_v4l_get_capabilities (GST_V4LELEMENT (v4lsrc)))
- GST_DEBUG_OBJECT (v4lsrc, "failed getting capabilities");
- else {
- targetwidth = vwin->width;
- targetheight = vwin->height;
- }
- GST_DEBUG_OBJECT (v4lsrc, "targetting %dx%d", targetwidth, targetheight);
+ return FALSE;
- newcaps = gst_caps_copy (caps);
- for (i = 0; i < gst_caps_get_size (caps); ++i) {
- structure = gst_caps_get_structure (newcaps, i);
+ if (!gst_v4lsrc_capture_start (v4lsrc))
+ return FALSE;
- if (gst_caps_structure_fixate_field_nearest_int (structure, "width",
- targetwidth)) {
- return newcaps;
- }
- if (gst_caps_structure_fixate_field_nearest_int (structure, "height",
- targetheight)) {
- return newcaps;
- }
- }
- gst_caps_free (newcaps);
- return NULL;
+ return TRUE;
}
-static GstCaps *
-gst_v4lsrc_getcaps (GstPad * pad)
+/* start and stop are not symmetric -- start will open the device, but not start
+ capture. it's setcaps that will start capture, which is called via basesrc's
+ negotiate method. stop will both stop capture and close the device.
+ */
+static gboolean
+gst_v4lsrc_start (GstBaseSrc * src)
{
- GstCaps *list;
- GstV4lSrc *v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
- struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
- gdouble fps;
- GList *item;
-
- if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
- return gst_v4lsrc_get_any_caps ();
- }
- if (!v4lsrc->autoprobe) {
- /* FIXME: query current caps and return those, with _any appended */
- return gst_v4lsrc_get_any_caps ();
- }
- fps = gst_v4lsrc_get_fps (v4lsrc);
-
- list = gst_caps_new_empty ();
- for (item = v4lsrc->colourspaces; item != NULL; item = item->next) {
- GstCaps *one;
+ GstV4lSrc *v4lsrc = GST_V4LSRC (src);
- one = gst_v4lsrc_palette_to_caps (GPOINTER_TO_INT (item->data));
- if (!one) {
- GST_WARNING_OBJECT (v4lsrc, "Palette %d gave no caps\n",
- GPOINTER_TO_INT (item->data));
- continue;
- }
-
- GST_DEBUG_OBJECT (v4lsrc,
- "Device reports w: %d-%d, h: %d-%d, fps: %f for palette %d",
- vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight, fps,
- GPOINTER_TO_INT (item->data));
-
- if (vcap->minwidth < vcap->maxwidth) {
- gst_caps_set_simple (one, "width", GST_TYPE_INT_RANGE, vcap->minwidth,
- vcap->maxwidth, NULL);
- } else {
- gst_caps_set_simple (one, "width", G_TYPE_INT, vcap->minwidth, NULL);
- }
- if (vcap->minheight < vcap->maxheight) {
- gst_caps_set_simple (one, "height", GST_TYPE_INT_RANGE, vcap->minheight,
- vcap->maxheight, NULL);
- } else {
- gst_caps_set_simple (one, "height", G_TYPE_INT, vcap->minheight, NULL);
- }
-
- if (v4lsrc->autoprobe_fps) {
- if (v4lsrc->fps_list) {
- GstStructure *structure = gst_caps_get_structure (one, 0);
-
- gst_structure_set_value (structure, "framerate", v4lsrc->fps_list);
- } else {
- gst_caps_set_simple (one, "framerate", G_TYPE_DOUBLE, fps, NULL);
- }
- } else {
- gst_caps_set_simple (one, "framerate", GST_TYPE_DOUBLE_RANGE,
- (gdouble) 1.0, (gdouble) 100.0, NULL);
- }
+ if (!GST_BASE_SRC_CLASS (parent_class)->start (src))
+ return FALSE;
- GST_DEBUG_OBJECT (v4lsrc, "caps: %" GST_PTR_FORMAT, one);
- gst_caps_append (list, one);
- }
+ v4lsrc->offset = 0;
- return list;
+ return TRUE;
}
-
-static GstData *
-gst_v4lsrc_get (GstPad * pad)
+static gboolean
+gst_v4lsrc_stop (GstBaseSrc * src)
{
- GstV4lSrc *v4lsrc;
- GstBuffer *buf;
- gint num;
- gdouble fps = 0.;
- v4lsrc_private_t *v4lsrc_private = NULL;
- GstClockTime now, until;
- gboolean fixed_fps;
-
- g_return_val_if_fail (pad != NULL, NULL);
-
- v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
- fps = gst_v4lsrc_get_fps (v4lsrc);
-
- fixed_fps = v4lsrc->syncmode == GST_V4LSRC_SYNC_MODE_FIXED_FPS;
-
- if (fixed_fps && fps == 0.0)
- return NULL;
-
- if (v4lsrc->need_writes > 0) {
- /* use last frame */
- num = v4lsrc->last_frame;
- v4lsrc->need_writes--;
- } else if (v4lsrc->clock && fixed_fps) {
- GstClockTime time;
- gboolean have_frame = FALSE;
-
- do {
- /* by default, we use the frame once */
- v4lsrc->need_writes = 1;
-
- /* grab a frame from the device */
- if (!gst_v4lsrc_grab_frame (v4lsrc, &num))
- return NULL;
-
- v4lsrc->last_frame = num;
- time = v4lsrc->timestamp_sync - v4lsrc->substract_time;
-
- /* decide how often we're going to write the frame - set
- * v4lsrc->need_writes to (that-1) and have_frame to TRUE
- * if we're going to write it - else, just continue.
- *
- * time is generally the system or audio clock. Let's
- * say that we've written one second of audio, then we want
- * to have written one second of video too, within the same
- * timeframe. This means that if time - begin_time = X sec,
- * we want to have written X*fps frames. If we've written
- * more - drop, if we've written less - dup... */
- if (v4lsrc->handled * (GST_SECOND / fps) - time >
- 1.5 * (GST_SECOND / fps)) {
- /* yo dude, we've got too many frames here! Drop! DROP! */
- v4lsrc->need_writes--; /* -= (v4lsrc->handled - (time / fps)); */
- g_signal_emit (G_OBJECT (v4lsrc),
- gst_v4lsrc_signals[SIGNAL_FRAME_DROP], 0);
- } else if (v4lsrc->handled * (GST_SECOND / fps) - time <
- -1.5 * (GST_SECOND / fps)) {
- /* this means we're lagging far behind */
- v4lsrc->need_writes++; /* += ((time / fps) - v4lsrc->handled); */
- g_signal_emit (G_OBJECT (v4lsrc),
- gst_v4lsrc_signals[SIGNAL_FRAME_INSERT], 0);
- }
+ GstV4lSrc *v4lsrc = GST_V4LSRC (src);
- if (v4lsrc->need_writes > 0) {
- have_frame = TRUE;
- v4lsrc->use_num_times[num] = v4lsrc->need_writes;
- v4lsrc->need_writes--;
- } else {
- gst_v4lsrc_requeue_frame (v4lsrc, num);
- }
- } while (!have_frame);
- } else {
- /* grab a frame from the device */
- if (!gst_v4lsrc_grab_frame (v4lsrc, &num))
- return NULL;
-
- v4lsrc->use_num_times[num] = 1;
- }
-
- buf = gst_buffer_new ();
- GST_BUFFER_FREE_DATA_FUNC (buf) = gst_v4lsrc_buffer_free;
- /* to requeue buffers, we need a ref to the element, as well as the frame
- number we got this buffer from */
- v4lsrc_private = g_malloc (sizeof (v4lsrc_private_t));
- v4lsrc_private->v4lsrc = v4lsrc;
- v4lsrc_private->num = num;
- GST_BUFFER_PRIVATE (buf) = v4lsrc_private;
-
- /* don't | the flags, they are integers, not bits!! */
- GST_BUFFER_FLAG_SET (buf, GST_BUFFER_READONLY);
- GST_BUFFER_FLAG_SET (buf, GST_BUFFER_DONTFREE);
- GST_BUFFER_DATA (buf) = gst_v4lsrc_get_buffer (v4lsrc, num);
- GST_BUFFER_MAXSIZE (buf) = v4lsrc->mbuf.size / v4lsrc->mbuf.frames;
- GST_BUFFER_SIZE (buf) = v4lsrc->buffer_size;
-
- if (v4lsrc->copy_mode) {
- GstBuffer *copy = gst_buffer_copy (buf);
-
- gst_buffer_unref (buf);
- buf = copy;
- }
-
- switch (v4lsrc->syncmode) {
- case GST_V4LSRC_SYNC_MODE_FIXED_FPS:
- GST_BUFFER_TIMESTAMP (buf) = v4lsrc->handled * GST_SECOND / fps;
- break;
- case GST_V4LSRC_SYNC_MODE_PRIVATE_CLOCK:
- /* calculate time based on our own clock */
- GST_BUFFER_TIMESTAMP (buf) =
- v4lsrc->timestamp_sync - v4lsrc->substract_time;
- break;
- case GST_V4LSRC_SYNC_MODE_CLOCK:
- if (v4lsrc->clock) {
- GstClockTime time = gst_element_get_time (GST_ELEMENT (v4lsrc));
- GstClockTimeDiff target_ts = 0;
-
- /* we can't go negative for timestamps. FIXME: latency querying
- * in the core generally should solve this */
- target_ts = GST_CLOCK_DIFF (time, v4lsrc->latency_offset);
- if (target_ts < 0)
- target_ts = 0;
- /* FIXME: create GST_TIME_DIFF_ARGS for target_ts */
- GST_LOG_OBJECT (v4lsrc, "time: %" GST_TIME_FORMAT
- ", latency-offset: %" GST_TIME_FORMAT
- ", timestamp: %" GST_TIME_FORMAT,
- GST_TIME_ARGS (time), GST_TIME_ARGS (v4lsrc->latency_offset),
- GST_TIME_ARGS (target_ts));
- GST_BUFFER_TIMESTAMP (buf) = target_ts;
- } else {
- GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
- }
- break;
- case GST_V4LSRC_SYNC_MODE_NONE:
- GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
- break;
- default:
- break;
- }
- GST_BUFFER_DURATION (buf) = GST_SECOND / fps;
-
- GST_LOG_OBJECT (v4lsrc, "outgoing buffer duration: %" GST_TIME_FORMAT,
- GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
-
- v4lsrc->handled++;
- g_signal_emit (G_OBJECT (v4lsrc),
- gst_v4lsrc_signals[SIGNAL_FRAME_CAPTURE], 0);
-
- /* this is the current timestamp */
- now = gst_element_get_time (GST_ELEMENT (v4lsrc));
-
- until = GST_BUFFER_TIMESTAMP (buf);
-
- GST_LOG_OBJECT (v4lsrc, "Current time %" GST_TIME_FORMAT
- ", buffer timestamp %" GST_TIME_FORMAT,
- GST_TIME_ARGS (now), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
- if (now < until) {
- GST_LOG_OBJECT (v4lsrc, "waiting until %" GST_TIME_FORMAT,
- GST_TIME_ARGS (until));
- if (!gst_element_wait (GST_ELEMENT (v4lsrc), until))
- GST_WARNING_OBJECT (v4lsrc, "waiting from now %" GST_TIME_FORMAT
- " until %" GST_TIME_FORMAT " failed",
- GST_TIME_ARGS (now), GST_TIME_ARGS (until));
- GST_LOG_OBJECT (v4lsrc, "wait done.");
- }
- /* check for discont; we do it after grabbing so that we drop the
- * first frame grabbed, but get an accurate discont event */
- if (v4lsrc->need_discont) {
- GstEvent *event;
-
- v4lsrc->need_discont = FALSE;
-
- /* drop the buffer we made */
- gst_buffer_unref (buf);
-
- /* get time for discont */
- now = gst_element_get_time (GST_ELEMENT (v4lsrc));
- GST_DEBUG_OBJECT (v4lsrc, "sending time discont with %" GST_TIME_FORMAT,
- GST_TIME_ARGS (now));
-
- /* store discont internally so we can wait when sending buffers too soon */
- v4lsrc->last_discont = now;
+ if (!gst_v4lsrc_capture_stop (v4lsrc))
+ return FALSE;
- /* return event */
- event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, now, NULL);
- return GST_DATA (event);
+ if (GST_V4LELEMENT (v4lsrc)->buffer != NULL) {
+ if (!gst_v4lsrc_capture_deinit (v4lsrc))
+ return FALSE;
}
- return GST_DATA (buf);
-}
-
-static void
-gst_v4lsrc_set_property (GObject * object,
- guint prop_id, const GValue * value, GParamSpec * pspec)
-{
- GstV4lSrc *v4lsrc;
-
- g_return_if_fail (GST_IS_V4LSRC (object));
- v4lsrc = GST_V4LSRC (object);
-
- switch (prop_id) {
- case ARG_SYNC_MODE:
- if (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc))) {
- v4lsrc->syncmode = g_value_get_enum (value);
- }
- break;
-
- case ARG_COPY_MODE:
- v4lsrc->copy_mode = g_value_get_boolean (value);
- break;
-
- case ARG_AUTOPROBE:
- if (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc))) {
- v4lsrc->autoprobe = g_value_get_boolean (value);
- }
- break;
-
- case ARG_AUTOPROBE_FPS:
- if (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc))) {
- v4lsrc->autoprobe_fps = g_value_get_boolean (value);
- }
- break;
-
-
- case ARG_LATENCY_OFFSET:
- v4lsrc->latency_offset = g_value_get_int (value);
- break;
+ if (!GST_BASE_SRC_CLASS (parent_class)->stop (src))
+ return FALSE;
+ g_list_free (v4lsrc->colorspaces);
+ v4lsrc->colorspaces = NULL;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
+ if (v4lsrc->fps_list) {
+ g_value_unset (v4lsrc->fps_list);
+ g_free (v4lsrc->fps_list);
+ v4lsrc->fps_list = NULL;
}
-}
-
-static void
-gst_v4lsrc_get_property (GObject * object,
- guint prop_id, GValue * value, GParamSpec * pspec)
-{
- GstV4lSrc *v4lsrc;
-
- g_return_if_fail (GST_IS_V4LSRC (object));
- v4lsrc = GST_V4LSRC (object);
-
- switch (prop_id) {
- case ARG_NUMBUFS:
- g_value_set_int (value, v4lsrc->mbuf.frames);
- break;
-
- case ARG_BUFSIZE:
- if (v4lsrc->mbuf.frames == 0)
- g_value_set_int (value, 0);
- else
- g_value_set_int (value,
- v4lsrc->mbuf.size / (v4lsrc->mbuf.frames * 1024));
- break;
-
- case ARG_SYNC_MODE:
- g_value_set_enum (value, v4lsrc->syncmode);
- break;
-
- case ARG_COPY_MODE:
- g_value_set_boolean (value, v4lsrc->copy_mode);
- break;
-
- case ARG_AUTOPROBE:
- g_value_set_boolean (value, v4lsrc->autoprobe);
- break;
-
- case ARG_AUTOPROBE_FPS:
- g_value_set_boolean (value, v4lsrc->autoprobe_fps);
- break;
-
- case ARG_LATENCY_OFFSET:
- g_value_set_int (value, v4lsrc->latency_offset);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
+ return TRUE;
}
-
-static GstElementStateReturn
-gst_v4lsrc_change_state (GstElement * element)
+static GstFlowReturn
+gst_v4lsrc_create (GstPushSrc * src, GstBuffer ** buf)
{
GstV4lSrc *v4lsrc;
- GTimeVal time;
- gint transition = GST_STATE_TRANSITION (element);
- GstElementStateReturn parent_ret = GST_STATE_SUCCESS;
-
- g_return_val_if_fail (GST_IS_V4LSRC (element), GST_STATE_FAILURE);
-
- v4lsrc = GST_V4LSRC (element);
-
- /* pre-parent state change */
- switch (transition) {
- case GST_STATE_READY_TO_PAUSED:
- v4lsrc->handled = 0;
- v4lsrc->need_discont = TRUE;
- v4lsrc->last_discont = 0;
- v4lsrc->need_writes = 0;
- v4lsrc->last_frame = 0;
- v4lsrc->substract_time = 0;
- /* buffer setup used to be done here, but I moved it to
- * capsnego */
- break;
- case GST_STATE_PAUSED_TO_PLAYING:
- /* queue all buffer, start streaming capture */
- if (GST_V4LELEMENT (v4lsrc)->buffer != NULL &&
- !gst_v4lsrc_capture_start (v4lsrc))
- return GST_STATE_FAILURE;
- g_get_current_time (&time);
- v4lsrc->substract_time =
- GST_TIMEVAL_TO_TIME (time) - v4lsrc->substract_time;
- break;
- case GST_STATE_PLAYING_TO_PAUSED:
- /* de-queue all queued buffers */
- if (v4lsrc->is_capturing && !gst_v4lsrc_capture_stop (v4lsrc))
- return GST_STATE_FAILURE;
- gst_v4lsrc_capture_stop (v4lsrc);
- g_get_current_time (&time);
- v4lsrc->substract_time =
- GST_TIMEVAL_TO_TIME (time) - v4lsrc->substract_time;
- break;
- case GST_STATE_PAUSED_TO_READY:
- /* stop capturing, unmap all buffers */
- if (GST_V4LELEMENT (v4lsrc)->buffer != NULL &&
- !gst_v4lsrc_capture_deinit (v4lsrc))
- return GST_STATE_FAILURE;
- break;
- case GST_STATE_READY_TO_NULL:
- break;
- }
+ gint num;
- if (GST_ELEMENT_CLASS (parent_class)->change_state)
- parent_ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
-
- /* post-parent change_state */
- switch (transition) {
- case GST_STATE_NULL_TO_READY:
- GST_DEBUG_OBJECT (v4lsrc,
- "Doing post-parent NULL_TO_READY, checking probes");
- if (v4lsrc->autoprobe_fps) {
- GST_DEBUG_OBJECT (v4lsrc, "autoprobing framerates");
- v4lsrc->fps_list = gst_v4lsrc_get_fps_list (v4lsrc);
- }
- default:
- break;
- }
+ v4lsrc = GST_V4LSRC (src);
- return parent_ret;
-}
+ /* grab a frame from the device */
+ if (!gst_v4lsrc_grab_frame (v4lsrc, &num))
+ return GST_FLOW_ERROR;
+ *buf = gst_v4lsrc_buffer_new (v4lsrc, num);
#if 0
-static GstBuffer *
-gst_v4lsrc_buffer_new (GstBufferPool * pool,
- guint64 offset, guint size, gpointer user_data)
-{
- GstBuffer *buffer;
- GstV4lSrc *v4lsrc = GST_V4LSRC (user_data);
+ GstBuffer *copy = gst_buffer_copy (buf);
- if (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lsrc)))
- return NULL;
-
- buffer = gst_buffer_new ();
- if (!buffer)
- return NULL;
-
- /* TODO: add interlacing info to buffer as metadata
- * (height>288 or 240 = topfieldfirst, else noninterlaced) */
- GST_BUFFER_MAXSIZE (buffer) = v4lsrc->mbuf.size / v4lsrc->mbuf.frames;
- GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_DONTFREE);
-
- return buffer;
-}
+ gst_buffer_unref (buf);
+ buf = copy;
#endif
-static void
-gst_v4lsrc_buffer_free (GstBuffer * buf)
-{
- v4lsrc_private_t *v4lsrc_private;
- GstV4lSrc *v4lsrc;
- int num;
-
- v4lsrc_private = GST_BUFFER_PRIVATE (buf);
- g_assert (v4lsrc_private);
- v4lsrc = v4lsrc_private->v4lsrc;
- num = v4lsrc_private->num;
- g_free (v4lsrc_private);
- GST_BUFFER_PRIVATE (buf) = 0;
-
- GST_LOG_OBJECT (v4lsrc, "freeing buffer %p with refcount %d for frame %d",
- buf, GST_BUFFER_REFCOUNT_VALUE (buf), num);
- if (gst_element_get_state (GST_ELEMENT (v4lsrc)) != GST_STATE_PLAYING)
- return; /* we've already cleaned up ourselves */
-
- v4lsrc->use_num_times[num]--;
- if (v4lsrc->use_num_times[num] <= 0) {
- GST_LOG_OBJECT (v4lsrc, "requeueing frame %d", num);
- gst_v4lsrc_requeue_frame (v4lsrc, num);
- }
-}
-
-
-static void
-gst_v4lsrc_set_clock (GstElement * element, GstClock * clock)
-{
- GST_V4LSRC (element)->clock = clock;
+ return GST_FLOW_OK;
}
projects / platform / upstream / gstreamer.git / commitdiff