static gboolean
gst_v4l2_video_dec_open (GstVideoDecoder * decoder)
{
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
GST_DEBUG_OBJECT (self, "Opening");
if (!gst_v4l2_object_open (self->v4l2output))
goto failure;
if (!gst_v4l2_object_open_shared (self->v4l2capture, self->v4l2output))
goto failure;
self->probed_sinkcaps = gst_v4l2_object_get_caps (self->v4l2output,
gst_v4l2_object_get_codec_caps ());
if (gst_caps_is_empty (self->probed_sinkcaps))
goto no_encoded_format;
self->probed_srccaps = gst_v4l2_object_get_caps (self->v4l2capture,
gst_v4l2_object_get_raw_caps ());
if (gst_caps_is_empty (self->probed_srccaps))
goto no_raw_format;
return TRUE;
no_encoded_format:
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
(_("Encoder on device %s has no supported input format"),
self->v4l2output->videodev), (NULL));
goto failure;
no_raw_format:
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
(_("Encoder on device %s has no supported output format"),
self->v4l2output->videodev), (NULL));
goto failure;
failure:
if (GST_V4L2_IS_OPEN (self->v4l2output))
gst_v4l2_object_close (self->v4l2output);
if (GST_V4L2_IS_OPEN (self->v4l2capture))
gst_v4l2_object_close (self->v4l2capture);
gst_caps_replace (&self->probed_srccaps, NULL);
gst_caps_replace (&self->probed_sinkcaps, NULL);
return FALSE;
}
static GstCaps *
gst_v4l2src_get_caps (GstBaseSrc * src)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
GstCaps *ret;
GSList *walk;
GSList *formats;
if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) {
/* FIXME: copy? */
return
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD
(v4l2src)));
}
if (v4l2src->probed_caps)
return gst_caps_ref (v4l2src->probed_caps);
formats = gst_v4l2_object_get_format_list (v4l2src->v4l2object);
ret = gst_caps_new_empty ();
for (walk = formats; walk; walk = walk->next) {
struct v4l2_fmtdesc *format;
GstStructure *template;
/******************************************************
* gst_v4l2src_capture_stop():
* stop streaming capture
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2src_capture_stop (GstV4l2Src * v4l2src)
{
GST_DEBUG_OBJECT (v4l2src, "stopping capturing");
if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) {
goto done;
}
if (!GST_V4L2_IS_ACTIVE (v4l2src->v4l2object)) {
goto done;
}
if (v4l2src->use_mmap) {
/* we actually need to sync on all queued buffers but not
* on the non-queued ones */
if (!gst_v4l2_object_stop_streaming (v4l2src->v4l2object)) {
return FALSE;
}
}
done:
/* make an optional pending wait stop */
v4l2src->quit = TRUE;
v4l2src->is_capturing = FALSE;
return TRUE;
}
static GstCaps *
gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter)
{
GstV4l2Src *v4l2src;
GstV4l2Object *obj;
GstCaps *ret;
GSList *walk;
GSList *formats;
v4l2src = GST_V4L2SRC (src);
obj = v4l2src->v4l2object;
if (!GST_V4L2_IS_OPEN (obj)) {
return gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (v4l2src));
}
if (v4l2src->probed_caps)
return gst_caps_ref (v4l2src->probed_caps);
formats = gst_v4l2_object_get_format_list (obj);
ret = gst_caps_new_empty ();
for (walk = formats; walk; walk = walk->next) {
struct v4l2_fmtdesc *format;
GstStructure *template;
static void
gst_v4l2sink_sync_overlay_fields (GstV4l2Sink * v4l2sink)
{
if (GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
gint fd = v4l2sink->v4l2object->video_fd;
struct v4l2_format format;
memset (&format, 0x00, sizeof (struct v4l2_format));
format.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
g_return_if_fail (v4l2_ioctl (fd, VIDIOC_G_FMT, &format) >= 0);
if (v4l2sink->overlay_fields_set) {
if (v4l2sink->overlay_fields_set & OVERLAY_TOP_SET)
format.fmt.win.w.top = v4l2sink->overlay.top;
if (v4l2sink->overlay_fields_set & OVERLAY_LEFT_SET)
format.fmt.win.w.left = v4l2sink->overlay.left;
if (v4l2sink->overlay_fields_set & OVERLAY_WIDTH_SET)
format.fmt.win.w.width = v4l2sink->overlay.width;
if (v4l2sink->overlay_fields_set & OVERLAY_HEIGHT_SET)
format.fmt.win.w.height = v4l2sink->overlay.height;
g_return_if_fail (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) >= 0);
v4l2sink->overlay_fields_set = 0;
}
v4l2sink->overlay = format.fmt.win.w;
}
}
gboolean
gst_v4l2_tuner_set_frequency (GstV4l2Object * v4l2object,
GstTunerChannel * channel, gulong frequency)
{
GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
gint chan;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY), FALSE);
g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
v4l2channel), FALSE);
if (v4l2object->get_in_out_func (v4l2object, &chan)) {
if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
if (gst_v4l2_set_frequency (v4l2object, v4l2channel->tuner, frequency)) {
gst_tuner_frequency_changed (GST_TUNER (v4l2object->element), channel,
frequency);
return TRUE;
}
}
}
return FALSE;
}
gboolean
gst_v4l2_get_input (GstV4l2Object * v4l2object, gint * input)
{
gint n;
GST_DEBUG_OBJECT (v4l2object->element, "trying to get input");
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_INPUT, &n) < 0)
goto input_failed;
*input = n;
GST_DEBUG_OBJECT (v4l2object->element, "input: %d", n);
return TRUE;
/* ERRORS */
input_failed:
{
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
(_("Failed to get current input on device '%s'. May be it is a radio device"), v4l2object->videodev), GST_ERROR_SYSTEM);
return FALSE;
}
}
static GstCaps *
gst_v4l2sink_get_caps (GstBaseSink * bsink)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
GstCaps *ret;
GSList *walk;
GSList *formats;
if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
/* FIXME: copy? */
GST_DEBUG_OBJECT (v4l2sink, "device is not open");
return
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD
(v4l2sink)));
}
if (v4l2sink->probed_caps) {
LOG_CAPS (v4l2sink, v4l2sink->probed_caps);
return gst_caps_ref (v4l2sink->probed_caps);
}
formats = gst_v4l2_object_get_format_list (v4l2sink->v4l2object);
ret = gst_caps_new_empty ();
for (walk = v4l2sink->v4l2object->formats; walk; walk = walk->next) {
struct v4l2_fmtdesc *format;
GstStructure *template;
/******************************************************
* gst_v4l2_signal_strength():
* get the strength of the signal on the current input
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2_signal_strength (GstV4l2Object * v4l2object,
gint tunernum, gulong * signal_strength)
{
struct v4l2_tuner tuner = { 0, };
GST_DEBUG_OBJECT (v4l2object->element, "trying to get signal strength");
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
tuner.index = tunernum;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_TUNER, &tuner) < 0)
goto tuner_failed;
*signal_strength = tuner.signal;
return TRUE;
/* ERRORS */
tuner_failed:
{
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
(_("Failed to get signal strength for device '%s'."),
v4l2object->videodev), GST_ERROR_SYSTEM);
return FALSE;
}
}
/******************************************************
* gst_v4l2_set_attribute():
* try to set the value of one specific attribute
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2_set_attribute (GstV4l2Object * v4l2object,
int attribute_num, const int value)
{
struct v4l2_control control = { 0, };
GST_DEBUG_OBJECT (v4l2object->element, "setting value of attribute %d to %d",
attribute_num, value);
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
control.id = attribute_num;
control.value = value;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_CTRL, &control) < 0)
goto ctrl_failed;
return TRUE;
/* ERRORS */
ctrl_failed:
{
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
(_("Failed to set value %d for control %d on device '%s'."),
value, attribute_num, v4l2object->videodev), GST_ERROR_SYSTEM);
return FALSE;
}
}
/******************************************************
* gst_v4l2_get_capabilities():
* get the device's capturing capabilities
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2_get_capabilities (GstV4l2Object * v4l2object)
{
GstElement *e;
e = v4l2object->element;
GST_DEBUG_OBJECT (e, "getting capabilities");
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_QUERYCAP, &v4l2object->vcap) < 0)
goto cap_failed;
GST_LOG_OBJECT (e, "driver: '%s'", v4l2object->vcap.driver);
GST_LOG_OBJECT (e, "card: '%s'", v4l2object->vcap.card);
GST_LOG_OBJECT (e, "bus_info: '%s'", v4l2object->vcap.bus_info);
GST_LOG_OBJECT (e, "version: %08x", v4l2object->vcap.version);
GST_LOG_OBJECT (e, "capabilites: %08x", v4l2object->vcap.capabilities);
return TRUE;
/* ERRORS */
cap_failed:
{
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
(_("Error getting capabilities for device '%s': "
"It isn't a v4l2 driver. Check if it is a v4l1 driver."),
v4l2object->videodev), GST_ERROR_SYSTEM);
return FALSE;
}
}
/******************************************************
* gst_v4l2_set_frequency():
* set frequency
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2_set_frequency (GstV4l2Object * v4l2object,
gint tunernum, gulong frequency)
{
struct v4l2_frequency freq = { 0, };
GstTunerChannel *channel;
GST_DEBUG_OBJECT (v4l2object->element,
"setting current tuner frequency to %lu", frequency);
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
channel = gst_tuner_get_channel (GST_TUNER (v4l2object->element));
freq.tuner = tunernum;
/* fill in type - ignore error */
v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_FREQUENCY, &freq);
freq.frequency = frequency / channel->freq_multiplicator;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_FREQUENCY, &freq) < 0)
goto freq_failed;
return TRUE;
/* ERRORS */
freq_failed:
{
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
(_("Failed to set current tuner frequency for device '%s' to %lu Hz."),
v4l2object->videodev, frequency), GST_ERROR_SYSTEM);
return FALSE;
}
}
gboolean
gst_v4l2_set_output (GstV4l2Object * v4l2object, gint output)
{
GST_DEBUG_OBJECT (v4l2object->element, "trying to set output to %d", output);
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_OUTPUT, &output) < 0)
goto output_failed;
return TRUE;
/* ERRORS */
output_failed:
if (v4l2object->vcap.capabilities & V4L2_CAP_TUNER) {
/* only give a warning message if driver actually claims to have tuner
* support
*/
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
(_("Failed to set output %d on device %s."),
output, v4l2object->videodev), GST_ERROR_SYSTEM);
}
return FALSE;
}
gboolean
gst_v4l2_get_output (GstV4l2Object * v4l2object, gint * output)
{
gint n;
GST_DEBUG_OBJECT (v4l2object->element, "trying to get output");
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_OUTPUT, &n) < 0)
goto output_failed;
*output = n;
GST_DEBUG_OBJECT (v4l2object->element, "output: %d", n);
return TRUE;
/* ERRORS */
output_failed:
if (v4l2object->vcap.capabilities & V4L2_CAP_TUNER) {
/* only give a warning message if driver actually claims to have tuner
* support
*/
GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
(_("Failed to get current output on device '%s'. May be it is a radio device"), v4l2object->videodev), GST_ERROR_SYSTEM);
}
return FALSE;
}
static gboolean
gst_v4l2_decoder_cmd (GstV4l2Object * v4l2object, guint cmd, guint flags)
{
struct v4l2_decoder_cmd dcmd = { 0, };
GST_DEBUG_OBJECT (v4l2object->element,
"sending v4l2 decoder command %u with flags %u", cmd, flags);
if (!GST_V4L2_IS_OPEN (v4l2object))
return FALSE;
dcmd.cmd = cmd;
dcmd.flags = flags;
if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_DECODER_CMD, &dcmd) < 0)
goto dcmd_failed;
return TRUE;
dcmd_failed:
if (errno == ENOTTY) {
GST_INFO_OBJECT (v4l2object->element,
"Failed to send decoder command %u with flags %u for '%s'. (%s)",
cmd, flags, v4l2object->videodev, g_strerror (errno));
} else {
GST_ERROR_OBJECT (v4l2object->element,
"Failed to send decoder command %u with flags %u for '%s'. (%s)",
cmd, flags, v4l2object->videodev, g_strerror (errno));
}
return FALSE;
}
/**
* gst_v4l2_xoverlay_prepare_xwindow_id:
* @v4l2object: the v4l2object
* @required: %TRUE if display is required (ie. TRUE for v4l2sink, but
* FALSE for any other element with optional overlay capabilities)
*
* Helper function to create a windo if none is set from the application.
*/
void
gst_v4l2_xoverlay_prepare_xwindow_id (GstV4l2Object * v4l2object,
gboolean required)
{
if (!GST_V4L2_IS_OVERLAY (v4l2object))
return;
gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (v4l2object->element));
if (required && !v4l2object->xwindow_id) {
GstV4l2Xv *v4l2xv;
Window win;
int width, height;
long event_mask;
if (!v4l2object->xv && GST_V4L2_IS_OPEN (v4l2object))
gst_v4l2_xoverlay_open (v4l2object);
v4l2xv = v4l2object->xv;
/* if xoverlay is not supported, just bail */
if (!v4l2xv)
return;
/* xoverlay is supported, but we don't have a window.. so create one */
GST_DEBUG_OBJECT (v4l2object->element, "creating window");
g_mutex_lock (v4l2xv->mutex);
width = XDisplayWidth (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy));
height = XDisplayHeight (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy));
GST_DEBUG_OBJECT (v4l2object->element, "dpy=%p", v4l2xv->dpy);
win = XCreateSimpleWindow (v4l2xv->dpy,
DefaultRootWindow (v4l2xv->dpy),
0, 0, width, height, 0, 0,
XBlackPixel (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy)));
GST_DEBUG_OBJECT (v4l2object->element, "win=%lu", win);
event_mask = ExposureMask | StructureNotifyMask;
if (GST_IS_NAVIGATION (v4l2object->element)) {
event_mask |= PointerMotionMask |
KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask;
}
XSelectInput (v4l2xv->dpy, win, event_mask);
v4l2xv->event_id = g_timeout_add (45, event_refresh, v4l2object);
XMapRaised (v4l2xv->dpy, win);
XSync (v4l2xv->dpy, FALSE);
g_mutex_unlock (v4l2xv->mutex);
GST_DEBUG_OBJECT (v4l2object->element, "got window");
gst_v4l2_xoverlay_set_window_handle (v4l2object, win);
}
}
static gboolean
gst_v4l2sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
GstV4l2Object *obj = v4l2sink->v4l2object;
LOG_CAPS (v4l2sink, caps);
if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
GST_DEBUG_OBJECT (v4l2sink, "device is not open");
return FALSE;
}
/* make sure the caps changed before doing anything */
if (gst_v4l2_object_caps_equal (obj, caps))
return TRUE;
if (!gst_v4l2_object_stop (obj))
goto stop_failed;
if (!gst_v4l2_object_set_format (v4l2sink->v4l2object, caps))
goto invalid_format;
gst_v4l2sink_sync_overlay_fields (v4l2sink);
gst_v4l2sink_sync_crop_fields (v4l2sink);
#ifdef HAVE_XVIDEO
gst_v4l2_video_overlay_prepare_window_handle (v4l2sink->v4l2object, TRUE);
#endif
GST_INFO_OBJECT (v4l2sink, "outputting buffers via mmap()");
v4l2sink->video_width = GST_V4L2_WIDTH (v4l2sink->v4l2object);
v4l2sink->video_height = GST_V4L2_HEIGHT (v4l2sink->v4l2object);
/* TODO: videosink width/height should be scaled according to
* pixel-aspect-ratio
*/
GST_VIDEO_SINK_WIDTH (v4l2sink) = v4l2sink->video_width;
GST_VIDEO_SINK_HEIGHT (v4l2sink) = v4l2sink->video_height;
return TRUE;
/* ERRORS */
stop_failed:
{
GST_DEBUG_OBJECT (v4l2sink, "failed to stop streaming");
return FALSE;
}
invalid_format:
{
/* error already posted */
GST_DEBUG_OBJECT (v4l2sink, "can't set format");
return FALSE;
}
}
void
gst_v4l2_xoverlay_set_xwindow_id (GstV4l2Object * v4l2object, XID xwindow_id)
{
GstV4l2Xv *v4l2xv;
XWindowAttributes attr;
gboolean change = (v4l2object->xwindow_id != xwindow_id);
GST_LOG_OBJECT (v4l2object->element, "Setting XID to %lx",
(gulong) xwindow_id);
if (!v4l2object->xv && GST_V4L2_IS_OPEN (v4l2object))
gst_v4l2_xoverlay_open (v4l2object);
v4l2xv = v4l2object->xv;
if (v4l2xv)
g_mutex_lock (v4l2xv->mutex);
if (change) {
if (v4l2object->xwindow_id && v4l2xv) {
GST_DEBUG_OBJECT (v4l2object->element,
"Deactivating old port %lx", v4l2object->xwindow_id);
XvSelectPortNotify (v4l2xv->dpy, v4l2xv->port, 0);
XvSelectVideoNotify (v4l2xv->dpy, v4l2object->xwindow_id, 0);
XvStopVideo (v4l2xv->dpy, v4l2xv->port, v4l2object->xwindow_id);
}
v4l2object->xwindow_id = xwindow_id;
}
if (!v4l2xv || xwindow_id == 0) {
if (v4l2xv)
g_mutex_unlock (v4l2xv->mutex);
return;
}
if (change) {
GST_DEBUG_OBJECT (v4l2object->element, "Activating new port %lx",
xwindow_id);
/* draw */
XvSelectPortNotify (v4l2xv->dpy, v4l2xv->port, 1);
XvSelectVideoNotify (v4l2xv->dpy, v4l2object->xwindow_id, 1);
}
XGetWindowAttributes (v4l2xv->dpy, v4l2object->xwindow_id, &attr);
XvPutVideo (v4l2xv->dpy, v4l2xv->port, v4l2object->xwindow_id,
DefaultGC (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy)),
0, 0, attr.width, attr.height, 0, 0, attr.width, attr.height);
if (v4l2xv->idle_id)
g_source_remove (v4l2xv->idle_id);
v4l2xv->idle_id = g_idle_add (idle_refresh, v4l2object);
g_mutex_unlock (v4l2xv->mutex);
}
GstTunerNorm *
gst_v4l2_tuner_get_norm (GstV4l2Object * v4l2object)
{
v4l2_std_id norm;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
gst_v4l2_get_norm (v4l2object, &norm);
return gst_v4l2_tuner_get_norm_by_std_id (v4l2object, norm);
}
void
gst_v4l2_xoverlay_set_window_handle (GstV4l2Object * v4l2object, guintptr id)
{
GstV4l2Xv *v4l2xv;
XID xwindow_id = id;
gboolean change = (v4l2object->xwindow_id != xwindow_id);
GST_LOG_OBJECT (v4l2object->element, "Setting XID to %lx",
(gulong) xwindow_id);
if (!v4l2object->xv && GST_V4L2_IS_OPEN (v4l2object))
gst_v4l2_xoverlay_open (v4l2object);
v4l2xv = v4l2object->xv;
if (v4l2xv)
g_mutex_lock (v4l2xv->mutex);
if (change) {
if (v4l2object->xwindow_id && v4l2xv) {
GST_DEBUG_OBJECT (v4l2object->element,
"Deactivating old port %lx", v4l2object->xwindow_id);
XvSelectPortNotify (v4l2xv->dpy, v4l2xv->port, 0);
XvSelectVideoNotify (v4l2xv->dpy, v4l2object->xwindow_id, 0);
XvStopVideo (v4l2xv->dpy, v4l2xv->port, v4l2object->xwindow_id);
}
v4l2object->xwindow_id = xwindow_id;
}
if (!v4l2xv || xwindow_id == 0) {
if (v4l2xv)
g_mutex_unlock (v4l2xv->mutex);
return;
}
if (change) {
GST_DEBUG_OBJECT (v4l2object->element, "Activating new port %lx",
xwindow_id);
/* draw */
XvSelectPortNotify (v4l2xv->dpy, v4l2xv->port, 1);
XvSelectVideoNotify (v4l2xv->dpy, v4l2object->xwindow_id, 1);
}
update_geometry (v4l2object);
if (v4l2xv->idle_id)
g_source_remove (v4l2xv->idle_id);
v4l2xv->idle_id = g_idle_add (idle_refresh, v4l2object);
g_mutex_unlock (v4l2xv->mutex);
}
/**
* gst_v4l2_xoverlay_prepare_xwindow_id:
* @v4l2object: the v4l2object
* @required: %TRUE if display is required (ie. TRUE for v4l2sink, but
* FALSE for any other element with optional overlay capabilities)
*
* Helper function to create a windo if none is set from the application.
*/
void
gst_v4l2_xoverlay_prepare_xwindow_id (GstV4l2Object * v4l2object,
gboolean required)
{
if (!GST_V4L2_IS_OVERLAY (v4l2object))
return;
gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (v4l2object->element));
if (required && !v4l2object->xwindow_id) {
GstV4l2Xv *v4l2xv;
Window win;
int width, height;
if (!v4l2object->xv && GST_V4L2_IS_OPEN (v4l2object))
gst_v4l2_xoverlay_open (v4l2object);
v4l2xv = v4l2object->xv;
/* if xoverlay is not supported, just bail */
if (!v4l2xv)
return;
/* xoverlay is supported, but we don't have a window.. so create one */
GST_DEBUG_OBJECT (v4l2object->element, "creating window");
g_mutex_lock (v4l2xv->mutex);
width = XDisplayWidth (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy));
height = XDisplayHeight (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy));
GST_DEBUG_OBJECT (v4l2object->element, "dpy=%p", v4l2xv->dpy);
win = XCreateSimpleWindow (v4l2xv->dpy,
DefaultRootWindow (v4l2xv->dpy),
0, 0, width, height, 0, 0,
XBlackPixel (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy)));
GST_DEBUG_OBJECT (v4l2object->element, "win=%lu", win);
XMapRaised (v4l2xv->dpy, win);
XSync (v4l2xv->dpy, FALSE);
v4l2xv->internal_window = TRUE;
g_mutex_unlock (v4l2xv->mutex);
GST_DEBUG_OBJECT (v4l2object->element, "got window");
gst_v4l2_xoverlay_set_window_handle (v4l2object, win);
}
}
static GstCaps *
gst_v4l2sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstV4l2Sink *v4l2sink = GST_V4L2SINK (bsink);
if (!GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
/* FIXME: copy? */
GST_DEBUG_OBJECT (v4l2sink, "device is not open");
return gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (v4l2sink));
}
return gst_v4l2_object_get_caps (v4l2sink->v4l2object, filter);
}
static GstCaps *
gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter)
{
GstV4l2Src *v4l2src;
GstV4l2Object *obj;
v4l2src = GST_V4L2SRC (src);
obj = v4l2src->v4l2object;
if (!GST_V4L2_IS_OPEN (obj)) {
return gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (v4l2src));
}
return gst_v4l2_object_get_caps (obj, filter);
}
void
gst_v4l2_color_balance_set_value (GstV4l2Object * v4l2object,
GstColorBalanceChannel * channel, gint value)
{
GstV4l2ColorBalanceChannel *v4l2channel =
GST_V4L2_COLOR_BALANCE_CHANNEL (channel);
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2object));
g_return_if_fail (gst_v4l2_color_balance_contains_channel (v4l2object,
v4l2channel));
gst_v4l2_set_attribute (v4l2object, v4l2channel->id, value);
}
gint
gst_v4l2_color_balance_get_value (GstV4l2Object * v4l2object,
GstColorBalanceChannel * channel)
{
GstV4l2ColorBalanceChannel *v4l2channel =
GST_V4L2_COLOR_BALANCE_CHANNEL (channel);
gint value;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
g_return_val_if_fail (gst_v4l2_color_balance_contains_channel (v4l2object,
v4l2channel), 0);
if (!gst_v4l2_get_attribute (v4l2object, v4l2channel->id, &value))
return 0;
return value;
}
static void
gst_v4l2sink_sync_overlay_fields (GstV4l2Sink * v4l2sink)
{
if (!v4l2sink->overlay_fields_set)
return;
if (GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
gint fd = v4l2sink->v4l2object->video_fd;
struct v4l2_format format;
memset (&format, 0x00, sizeof (struct v4l2_format));
format.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
if (v4l2_ioctl (fd, VIDIOC_G_FMT, &format) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_G_FMT failed");
return;
}
GST_DEBUG_OBJECT (v4l2sink,
"setting overlay: overlay_fields_set=0x%02x, top=%d, left=%d, width=%d, height=%d",
v4l2sink->overlay_fields_set,
v4l2sink->overlay.top, v4l2sink->overlay.left,
v4l2sink->overlay.width, v4l2sink->overlay.height);
if (v4l2sink->overlay_fields_set & RECT_TOP_SET)
format.fmt.win.w.top = v4l2sink->overlay.top;
if (v4l2sink->overlay_fields_set & RECT_LEFT_SET)
format.fmt.win.w.left = v4l2sink->overlay.left;
if (v4l2sink->overlay_fields_set & RECT_WIDTH_SET)
format.fmt.win.w.width = v4l2sink->overlay.width;
if (v4l2sink->overlay_fields_set & RECT_HEIGHT_SET)
format.fmt.win.w.height = v4l2sink->overlay.height;
if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_S_FMT failed");
return;
}
v4l2sink->overlay_fields_set = 0;
v4l2sink->overlay = format.fmt.win.w;
}
}
static void
gst_v4l2sink_sync_crop_fields (GstV4l2Sink * v4l2sink)
{
if (!v4l2sink->crop_fields_set)
return;
if (GST_V4L2_IS_OPEN (v4l2sink->v4l2object)) {
gint fd = v4l2sink->v4l2object->video_fd;
struct v4l2_crop crop;
memset (&crop, 0x00, sizeof (struct v4l2_crop));
crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
if (v4l2_ioctl (fd, VIDIOC_G_CROP, &crop) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_G_CROP failed");
return;
}
GST_DEBUG_OBJECT (v4l2sink,
"setting crop: crop_fields_set=0x%02x, top=%d, left=%d, width=%d, height=%d",
v4l2sink->crop_fields_set,
v4l2sink->crop.top, v4l2sink->crop.left,
v4l2sink->crop.width, v4l2sink->crop.height);
if (v4l2sink->crop_fields_set & RECT_TOP_SET)
crop.c.top = v4l2sink->crop.top;
if (v4l2sink->crop_fields_set & RECT_LEFT_SET)
crop.c.left = v4l2sink->crop.left;
if (v4l2sink->crop_fields_set & RECT_WIDTH_SET)
crop.c.width = v4l2sink->crop.width;
if (v4l2sink->crop_fields_set & RECT_HEIGHT_SET)
crop.c.height = v4l2sink->crop.height;
if (v4l2_ioctl (fd, VIDIOC_S_CROP, &crop) < 0) {
GST_WARNING_OBJECT (v4l2sink, "VIDIOC_S_CROP failed");
return;
}
v4l2sink->crop_fields_set = 0;
v4l2sink->crop = crop.c;
}
}
gboolean
gst_v4l2_tuner_set_norm (GstV4l2Object * v4l2object, GstTunerNorm * norm)
{
GstV4l2TunerNorm *v4l2norm = GST_V4L2_TUNER_NORM (norm);
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
g_return_val_if_fail (gst_v4l2_tuner_contains_norm (v4l2object, v4l2norm),
FALSE);
if (gst_v4l2_set_norm (v4l2object, v4l2norm->index)) {
gst_tuner_norm_changed (GST_TUNER (v4l2object->element), norm);
if (v4l2object->update_fps_func)
v4l2object->update_fps_func (v4l2object);
return TRUE;
}
return FALSE;
}
GstTunerChannel *
gst_v4l2_tuner_get_channel (GstV4l2Object * v4l2object)
{
GList *item;
gint channel;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
if (v4l2object->get_in_out_func (v4l2object, &channel)) {
for (item = v4l2object->channels; item != NULL; item = item->next) {
if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
return (GstTunerChannel *) item->data;
}
}
return NULL;
}
gboolean
gst_v4l2_tuner_set_channel (GstV4l2Object * v4l2object,
GstTunerChannel * channel)
{
GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
v4l2channel), FALSE);
if (v4l2object->set_in_out_func (v4l2object, v4l2channel->index)) {
gst_tuner_channel_changed (GST_TUNER (v4l2object->element), channel);
/* can FPS change here? */
return TRUE;
}
return FALSE;
}
