static void
gst_gdk_pixbuf_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGdkPixbufSink *sink;
sink = GST_GDK_PIXBUF_SINK (object);
switch (prop_id) {
case PROP_SEND_MESSAGES:
case PROP_POST_MESSAGES:
GST_OBJECT_LOCK (sink);
g_value_set_boolean (value, sink->post_messages);
GST_OBJECT_UNLOCK (sink);
break;
case PROP_LAST_PIXBUF:
GST_OBJECT_LOCK (sink);
g_value_set_object (value, sink->last_pixbuf);
GST_OBJECT_UNLOCK (sink);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_gdk_pixbuf_sink_handle_buffer (GstBaseSink * basesink, GstBuffer * buf,
const gchar * msg_name)
{
GstGdkPixbufSink *sink;
GdkPixbuf *pixbuf;
gboolean do_post;
sink = GST_GDK_PIXBUF_SINK (basesink);
pixbuf = gst_gdk_pixbuf_sink_get_pixbuf_from_buffer (sink, buf);
GST_OBJECT_LOCK (sink);
do_post = sink->post_messages;
if (sink->last_pixbuf)
g_object_unref (sink->last_pixbuf);
sink->last_pixbuf = pixbuf; /* take ownership */
GST_OBJECT_UNLOCK (sink);
if (G_UNLIKELY (pixbuf == NULL))
goto error;
if (do_post) {
GstStructure *s;
GstMessage *msg;
/* it's okay to keep using pixbuf here, we can be sure no one is going to
* unref or change sink->last_pixbuf before we return from this function.
* The structure will take its own ref to the pixbuf. */
s = gst_structure_new (msg_name,
"pixbuf", GDK_TYPE_PIXBUF, pixbuf,
"pixel-aspect-ratio", GST_TYPE_FRACTION, sink->par_d, sink->par_n,
NULL);
msg = gst_message_new_element (GST_OBJECT_CAST (sink), s);
gst_element_post_message (GST_ELEMENT_CAST (sink), msg);
}
g_object_notify (G_OBJECT (sink), "last-pixbuf");
return GST_FLOW_OK;
/* ERRORS */
error:
{
/* This shouldn't really happen */
GST_ELEMENT_ERROR (sink, LIBRARY, FAILED,
("Couldn't create pixbuf from RGB image."),
("Probably not enough free memory"));
return GST_FLOW_ERROR;
}
}
static gboolean
gst_gdk_pixbuf_sink_set_caps (GstBaseSink * basesink, GstCaps * caps)
{
GstGdkPixbufSink *sink = GST_GDK_PIXBUF_SINK (basesink);
GstVideoInfo info;
GstVideoFormat fmt;
gint w, h, s, par_n, par_d;
GST_LOG_OBJECT (sink, "caps: %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&info, caps)) {
GST_WARNING_OBJECT (sink, "parse_caps failed");
return FALSE;
}
fmt = GST_VIDEO_INFO_FORMAT (&info);
w = GST_VIDEO_INFO_WIDTH (&info);
h = GST_VIDEO_INFO_HEIGHT (&info);
s = GST_VIDEO_INFO_COMP_PSTRIDE (&info, 0);
par_n = GST_VIDEO_INFO_PAR_N (&info);
par_d = GST_VIDEO_INFO_PAR_N (&info);
g_assert ((fmt == GST_VIDEO_FORMAT_RGB && s == 3) ||
(fmt == GST_VIDEO_FORMAT_RGBA && s == 4));
GST_VIDEO_SINK_WIDTH (sink) = w;
GST_VIDEO_SINK_HEIGHT (sink) = h;
sink->par_n = par_n;
sink->par_d = par_d;
sink->has_alpha = GST_VIDEO_INFO_HAS_ALPHA (&info);
GST_INFO_OBJECT (sink, "format : %d", fmt);
GST_INFO_OBJECT (sink, "width x height : %d x %d", w, h);
GST_INFO_OBJECT (sink, "pixel-aspect-ratio : %d/%d", par_n, par_d);
sink->info = info;
return TRUE;
}
static gboolean
gst_gdk_pixbuf_sink_stop (GstBaseSink * basesink)
{
GstGdkPixbufSink *sink = GST_GDK_PIXBUF_SINK (basesink);
GST_VIDEO_SINK_WIDTH (sink) = 0;
GST_VIDEO_SINK_HEIGHT (sink) = 0;
sink->par_n = 0;
sink->par_d = 0;
sink->has_alpha = FALSE;
if (sink->last_pixbuf) {
g_object_unref (sink->last_pixbuf);
sink->last_pixbuf = NULL;
}
GST_LOG_OBJECT (sink, "stop");
return TRUE;
}
static gboolean
gst_gdk_pixbuf_sink_set_caps (GstBaseSink * basesink, GstCaps * caps)
{
GstGdkPixbufSink *sink = GST_GDK_PIXBUF_SINK (basesink);
GstVideoFormat fmt;
gint w, h, par_n, par_d;
GST_LOG_OBJECT (sink, "caps: %" GST_PTR_FORMAT, caps);
if (!gst_video_format_parse_caps (caps, &fmt, &w, &h)) {
GST_WARNING_OBJECT (sink, "parse_caps failed");
return FALSE;
}
if (!gst_video_parse_caps_pixel_aspect_ratio (caps, &par_n, &par_d)) {
GST_LOG_OBJECT (sink, "no pixel aspect ratio");
return FALSE;
}
g_assert ((fmt == GST_VIDEO_FORMAT_RGB &&
gst_video_format_get_pixel_stride (fmt, 0) == 3) ||
(fmt == GST_VIDEO_FORMAT_RGBA &&
gst_video_format_get_pixel_stride (fmt, 0) == 4));
GST_VIDEO_SINK_WIDTH (sink) = w;
GST_VIDEO_SINK_HEIGHT (sink) = h;
sink->rowstride = gst_video_format_get_row_stride (fmt, 0, w);
sink->has_alpha = (fmt == GST_VIDEO_FORMAT_RGBA);
sink->par_n = par_n;
sink->par_d = par_d;
GST_INFO_OBJECT (sink, "format : %d", fmt);
GST_INFO_OBJECT (sink, "width x height : %d x %d", w, h);
GST_INFO_OBJECT (sink, "pixel-aspect-ratio : %d/%d", par_d, par_n);
return TRUE;
}
