static void
gst_v4l_xoverlay_set_window_handle (GstXOverlay * overlay, guintptr id)
{
XID xwindow_id = id;
GstV4lElement *v4lelement = GST_V4LELEMENT (overlay);
GstV4lXv *v4lxv;
XWindowAttributes attr;
gboolean change = (v4lelement->xwindow_id != xwindow_id);
GST_LOG_OBJECT (v4lelement, "Changing port to %lx", xwindow_id);
if (!v4lelement->xv && GST_V4L_IS_OPEN (v4lelement))
gst_v4l_xoverlay_open (v4lelement);
v4lxv = v4lelement->xv;
if (v4lxv)
g_mutex_lock (v4lxv->mutex);
if (change) {
if (v4lelement->xwindow_id && v4lxv) {
GST_DEBUG_OBJECT (v4lelement,
"Disabling port %lx", v4lelement->xwindow_id);
XvSelectPortNotify (v4lxv->dpy, v4lxv->port, 0);
XvSelectVideoNotify (v4lxv->dpy, v4lelement->xwindow_id, 0);
XvStopVideo (v4lxv->dpy, v4lxv->port, v4lelement->xwindow_id);
}
v4lelement->xwindow_id = xwindow_id;
}
if (!v4lxv || xwindow_id == 0) {
if (v4lxv)
g_mutex_unlock (v4lxv->mutex);
return;
}
if (change) {
GST_DEBUG_OBJECT (v4lelement, "Enabling port %lx", xwindow_id);
/* draw */
XvSelectPortNotify (v4lxv->dpy, v4lxv->port, 1);
XvSelectVideoNotify (v4lxv->dpy, v4lelement->xwindow_id, 1);
}
XGetWindowAttributes (v4lxv->dpy, v4lelement->xwindow_id, &attr);
XvPutVideo (v4lxv->dpy, v4lxv->port, v4lelement->xwindow_id,
DefaultGC (v4lxv->dpy, DefaultScreen (v4lxv->dpy)),
0, 0, attr.width, attr.height, 0, 0, attr.width, attr.height);
if (v4lxv->idle_id)
g_source_remove (v4lxv->idle_id);
v4lxv->idle_id = g_idle_add (idle_refresh, v4lelement);
g_mutex_unlock (v4lxv->mutex);
}
static void
gst_v4l_tuner_set_norm (GstTuner * tuner, GstTunerNorm * norm)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (tuner);
GstV4lTunerNorm *v4lnorm = GST_V4L_TUNER_NORM (norm);
gint channel;
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L_IS_OPEN (v4lelement));
g_return_if_fail (gst_v4l_tuner_contains_norm (v4lelement, v4lnorm));
gst_v4l_get_chan_norm (v4lelement, &channel, NULL);
gst_v4l_set_chan_norm (v4lelement, channel, v4lnorm->index);
}
static void
gst_v4l_tuner_set_channel (GstTuner * tuner, GstTunerChannel * channel)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (tuner);
GstV4lTunerChannel *v4lchannel = GST_V4L_TUNER_CHANNEL (channel);
gint norm;
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L_IS_OPEN (v4lelement));
g_return_if_fail (gst_v4l_tuner_contains_channel (v4lelement, v4lchannel));
gst_v4l_get_chan_norm (v4lelement, NULL, &norm);
gst_v4l_set_chan_norm (v4lelement, v4lchannel->index, norm);
}
/* this function is a bit of a last resort */
static void
gst_v4lsrc_fixate (GstBaseSrc * bsrc, GstCaps * caps)
{
GstStructure *structure;
int i;
int targetwidth, targetheight;
GstV4lSrc *v4lsrc = GST_V4LSRC (bsrc);
struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
struct video_window *vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
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;
}
GST_DEBUG_OBJECT (v4lsrc, "targetting %dx%d", targetwidth, targetheight);
for (i = 0; i < gst_caps_get_size (caps); ++i) {
const GValue *v;
structure = gst_caps_get_structure (caps, i);
gst_structure_fixate_field_nearest_int (structure, "width", targetwidth);
gst_structure_fixate_field_nearest_int (structure, "height", targetheight);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", 15, 2);
v = gst_structure_get_value (structure, "format");
if (v && G_VALUE_TYPE (v) != GST_TYPE_FOURCC) {
guint32 fourcc;
g_return_if_fail (G_VALUE_TYPE (v) == GST_TYPE_LIST);
fourcc = gst_value_get_fourcc (gst_value_list_get_value (v, 0));
gst_structure_set (structure, "format", GST_TYPE_FOURCC, fourcc, NULL);
}
}
}
static gboolean
gst_v4lsrc_query (GstBaseSrc * bsrc, GstQuery * query)
{
GstV4lSrc *v4lsrc;
gboolean res = FALSE;
v4lsrc = GST_V4LSRC (bsrc);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
GstClockTime min_latency, max_latency;
gint fps_n, fps_d;
/* device must be open */
if (!GST_V4L_IS_OPEN (v4lsrc))
goto done;
/* we must have a framerate */
if (!(res = gst_v4lsrc_get_fps (v4lsrc, &fps_n, &fps_d)))
goto done;
/* min latency is the time to capture one frame */
min_latency = gst_util_uint64_scale_int (GST_SECOND, fps_d, fps_n);
/* max latency is total duration of the frame buffer */
max_latency = v4lsrc->mbuf.frames * min_latency;
GST_DEBUG_OBJECT (bsrc,
"report latency min %" GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
/* we are always live, the min latency is 1 frame and the max latency is
* the complete buffer of frames. */
gst_query_set_latency (query, TRUE, min_latency, max_latency);
res = TRUE;
break;
}
default:
res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
break;
}
done:
return res;
}
static GstCaps *
gst_v4ljpegsrc_getcaps (GstPad * pad)
{
GstCaps *list;
GstV4lJpegSrc *v4ljpegsrc = GST_V4LJPEGSRC (gst_pad_get_parent (pad));
GstV4lSrc *v4lsrc = GST_V4LSRC (v4ljpegsrc);
struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
gfloat fps = 0.0;
if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
return gst_caps_new_any ();
}
if (!v4lsrc->autoprobe) {
/* FIXME: query current caps and return those, with _any appended */
return gst_caps_new_any ();
}
list = gst_caps_new_simple ("image/jpeg", NULL);
GST_DEBUG_OBJECT (v4ljpegsrc,
"Device reports w: %d-%d, h: %d-%d, fps: %f",
vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight, fps);
if (vcap->minwidth < vcap->maxwidth) {
gst_caps_set_simple (list, "width", GST_TYPE_INT_RANGE, vcap->minwidth,
vcap->maxwidth, NULL);
} else {
gst_caps_set_simple (list, "width", G_TYPE_INT, vcap->minwidth, NULL);
}
if (vcap->minheight < vcap->maxheight) {
gst_caps_set_simple (list, "height", GST_TYPE_INT_RANGE, vcap->minheight,
vcap->maxheight, NULL);
} else {
gst_caps_set_simple (list, "height", G_TYPE_INT, vcap->minheight, NULL);
}
if (v4lsrc->fps_list) {
GstStructure *structure = gst_caps_get_structure (list, 0);
gst_structure_set_value (structure, "framerate", v4lsrc->fps_list);
}
GST_DEBUG_OBJECT (v4ljpegsrc, "caps: %" GST_PTR_FORMAT, list);
return list;
}
static void
gst_v4l_tuner_set_frequency (GstTuner * tuner,
GstTunerChannel * channel, gulong frequency)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (tuner);
GstV4lTunerChannel *v4lchannel = GST_V4L_TUNER_CHANNEL (channel);
gint chan;
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L_IS_OPEN (v4lelement));
g_return_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY));
g_return_if_fail (gst_v4l_tuner_contains_channel (v4lelement, v4lchannel));
gst_v4l_get_chan_norm (v4lelement, &chan, NULL);
if (chan == GST_V4L_TUNER_CHANNEL (channel)->index) {
gst_v4l_set_frequency (v4lelement, v4lchannel->tuner, frequency);
}
}
static GstTunerNorm *
gst_v4l_tuner_get_norm (GstTuner * tuner)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (tuner);
GList *item;
gint norm;
/* assert that we're opened */
g_return_val_if_fail (GST_V4L_IS_OPEN (v4lelement), NULL);
gst_v4l_get_chan_norm (v4lelement, NULL, &norm);
for (item = v4lelement->norms; item != NULL; item = item->next) {
if (norm == GST_V4L_TUNER_NORM (item->data)->index)
return GST_TUNER_NORM (item->data);
}
return NULL;
}
static GstTunerChannel *
gst_v4l_tuner_get_channel (GstTuner * tuner)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (tuner);
GList *item;
gint channel;
/* assert that we're opened */
g_return_val_if_fail (GST_V4L_IS_OPEN (v4lelement), NULL);
gst_v4l_get_chan_norm (v4lelement, &channel, NULL);
for (item = v4lelement->channels; item != NULL; item = item->next) {
if (channel == GST_V4L_TUNER_CHANNEL (item->data)->index)
return GST_TUNER_CHANNEL (item->data);
}
return NULL;
}
static gint
gst_v4l_tuner_signal_strength (GstTuner * tuner, GstTunerChannel * channel)
{
GstV4lElement *v4lelement = GST_V4LELEMENT (tuner);
GstV4lTunerChannel *v4lchannel = GST_V4L_TUNER_CHANNEL (channel);
gint chan;
guint signal = 0;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L_IS_OPEN (v4lelement), 0);
g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY), 0);
g_return_val_if_fail (gst_v4l_tuner_contains_channel (v4lelement,
v4lchannel), 0);
gst_v4l_get_chan_norm (v4lelement, &chan, NULL);
if (chan == GST_V4L_TUNER_CHANNEL (channel)->index &&
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
gst_v4l_get_signal (v4lelement, v4lchannel->tuner, &signal);
}
return (gint) signal;
}
static gboolean
gst_v4lsrc_set_caps (GstBaseSrc * src, GstCaps * caps)
{
GstV4lSrc *v4lsrc;
guint32 fourcc;
gint bpp, depth, w, h, palette = -1;
const GValue *new_fps;
gint cur_fps_n, cur_fps_d;
GstStructure *structure;
struct video_window *vwin;
v4lsrc = GST_V4LSRC (src);
vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
/* 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 FALSE;
}
/* it's fixed, one struct */
structure = gst_caps_get_structure (caps, 0);
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', ' ');
gst_structure_get_int (structure, "width", &w);
gst_structure_get_int (structure, "height", &h);
new_fps = gst_structure_get_value (structure, "framerate");
/* set framerate if it's not already correct */
if (!gst_v4lsrc_get_fps (v4lsrc, &cur_fps_n, &cur_fps_d))
return FALSE;
if (new_fps) {
GST_DEBUG_OBJECT (v4lsrc, "linking with %dx%d at %d/%d fps", w, h,
gst_value_get_fraction_numerator (new_fps),
gst_value_get_fraction_denominator (new_fps));
if (gst_value_get_fraction_numerator (new_fps) != cur_fps_n ||
gst_value_get_fraction_denominator (new_fps) != cur_fps_d) {
int fps_index = (gst_value_get_fraction_numerator (new_fps) * 16) /
(gst_value_get_fraction_denominator (new_fps) * 15);
GST_DEBUG_OBJECT (v4lsrc, "Trying to set fps index %d", fps_index);
/* set bits 16 to 21 to 0 */
vwin->flags &= (0x3F00 - 1);
/* set bits 16 to 21 to the index */
vwin->flags |= fps_index << 16;
if (!gst_v4l_set_window_properties (GST_V4LELEMENT (v4lsrc))) {
return FALSE;
}
}
}
switch (fourcc) {
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
palette = VIDEO_PALETTE_YUV420P;
v4lsrc->buffer_size = ((w + 1) & ~1) * ((h + 1) & ~1) * 1.5;
break;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
palette = VIDEO_PALETTE_YUV422;
v4lsrc->buffer_size = ((w + 1) & ~1) * h * 2;
break;
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
palette = VIDEO_PALETTE_UYVY;
v4lsrc->buffer_size = ((w + 1) & ~1) * h * 2;
break;
case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
palette = VIDEO_PALETTE_YUV411P;
v4lsrc->buffer_size = ((w + 3) & ~3) * h * 1.5;
break;
case GST_MAKE_FOURCC ('Y', '4', '1', 'P'):
palette = VIDEO_PALETTE_YUV411;
v4lsrc->buffer_size = ((w + 3) & ~3) * h * 1.5;
break;
case GST_MAKE_FOURCC ('Y', 'U', 'V', '9'):
palette = VIDEO_PALETTE_YUV410P;
v4lsrc->buffer_size = ((w + 3) & ~3) * ((h + 3) & ~3) * 1.125;
break;
case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
palette = VIDEO_PALETTE_YUV422P;
v4lsrc->buffer_size = ((w + 1) & ~1) * h * 2;
break;
case GST_MAKE_FOURCC ('R', 'G', 'B', ' '):
gst_structure_get_int (structure, "depth", &depth);
switch (depth) {
case 15:
palette = VIDEO_PALETTE_RGB555;
v4lsrc->buffer_size = w * h * 2;
break;
case 16:
palette = VIDEO_PALETTE_RGB565;
v4lsrc->buffer_size = w * h * 2;
break;
case 24:
gst_structure_get_int (structure, "bpp", &bpp);
switch (bpp) {
case 24:
palette = VIDEO_PALETTE_RGB24;
v4lsrc->buffer_size = w * h * 3;
break;
case 32:
palette = VIDEO_PALETTE_RGB32;
v4lsrc->buffer_size = w * h * 4;
break;
default:
break;
}
break;
default:
break;
}
break;
default:
break;
}
if (palette == -1) {
GST_WARNING_OBJECT (v4lsrc, "palette for fourcc %" GST_FOURCC_FORMAT
" is -1, refusing link", GST_FOURCC_ARGS (fourcc));
return FALSE;
}
GST_DEBUG_OBJECT (v4lsrc, "trying to set_capture %dx%d, palette %d",
w, h, palette);
/* this only fills in v4lsrc->mmap values */
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 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 FALSE;
}
if (!gst_v4lsrc_capture_init (v4lsrc))
return FALSE;
if (!gst_v4lsrc_capture_start (v4lsrc))
return FALSE;
return TRUE;
}
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;
gint fps_n, fps_d;
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);
}
}
if (!gst_v4lsrc_get_fps (v4lsrc, &fps_n, &fps_d)) {
fps_n = 0;
fps_d = 1;
}
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: %d/%d for palette %d",
vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight,
fps_n, fps_d, 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) {
GstStructure *structure = gst_caps_get_structure (one, 0);
if (v4lsrc->fps_list) {
gst_structure_set_value (structure, "framerate", v4lsrc->fps_list);
} else {
gst_structure_set (structure, "framerate", GST_TYPE_FRACTION,
fps_n, fps_d, NULL);
}
} else {
gst_caps_set_simple (one, "framerate", GST_TYPE_FRACTION_RANGE,
1, 1, 100, 1, NULL);
}
GST_DEBUG_OBJECT (v4lsrc, "caps: %" GST_PTR_FORMAT, one);
gst_caps_append (list, one);
}
return list;
}
static GstPadLinkReturn
gst_v4ljpegsrc_src_link (GstPad * pad, const GstCaps * vscapslist)
{
GstV4lJpegSrc *v4ljpegsrc;
GstV4lSrc *v4lsrc;
gint w, h, palette = -1;
const GValue *fps;
GstStructure *structure;
gboolean was_capturing;
struct video_window *vwin;
v4ljpegsrc = GST_V4LJPEGSRC (gst_pad_get_parent (pad));
v4lsrc = GST_V4LSRC (v4ljpegsrc);
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 (!gst_v4lsrc_capture_deinit (v4lsrc))
return GST_PAD_LINK_REFUSED;
} else if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
return GST_PAD_LINK_DELAYED;
}
structure = gst_caps_get_structure (vscapslist, 0);
gst_structure_get_int (structure, "width", &w);
gst_structure_get_int (structure, "height", &h);
fps = gst_structure_get_value (structure, "framerate");
GST_DEBUG_OBJECT (v4ljpegsrc, "linking with %dx%d at %d/%d fps", w, h,
gst_value_get_fraction_numerator (fps),
gst_value_get_fraction_denominator (fps));
/* set framerate if it's not already correct */
if (fps != gst_v4lsrc_get_fps (v4lsrc)) {
int fps_index = fps / 15.0 * 16;
GST_DEBUG_OBJECT (v4ljpegsrc, "Trying to set fps index %d", fps_index);
/* set bits 16 to 21 to 0 */
vwin->flags &= (0x3F00 - 1);
/* 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_DELAYED;
}
}
/*
* Try to set the camera to capture RGB24
*/
palette = VIDEO_PALETTE_RGB24;
v4lsrc->buffer_size = w * h * 3;
GST_DEBUG_OBJECT (v4ljpegsrc, "trying to set_capture %dx%d, palette %d",
w, h, palette);
/* this only fills in v4lsrc->mmap values */
if (!gst_v4lsrc_set_capture (v4lsrc, w, h, palette)) {
GST_WARNING_OBJECT (v4ljpegsrc, "could not set_capture %dx%d, palette %d",
w, h, palette);
return GST_PAD_LINK_REFUSED;
}
/* first try the negotiated settings using try_capture */
if (!gst_v4lsrc_try_capture (v4lsrc, w, h, palette)) {
GST_DEBUG_OBJECT (v4ljpegsrc, "failed trying palette %d for %dx%d", palette,
w, h);
return GST_PAD_LINK_REFUSED;
}
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;
}
