gstreamer/gst-libs/gst/video/video.c
Christophe Fergeau 8e6d3a5c03 Don't leak references returned by gst_pad_get_parent()
Original commit message from CVS:
* ext/libvisual/visual.c: (gst_visual_getcaps),
(gst_visual_src_setcaps), (gst_visual_sink_setcaps):
* ext/ogg/gstoggmux.c: (gst_ogg_mux_sinkconnect):
* ext/vorbis/vorbisenc.c: (gst_vorbisenc_convert_src),
(gst_vorbisenc_convert_sink):
* gst-libs/gst/audio/audio.c: (gst_audio_frame_byte_size),
(gst_audio_duration_from_pad_buffer):
* gst-libs/gst/audio/gstaudiofilter.c: (gst_audio_filter_link),
(gst_audio_filter_chain):
* gst-libs/gst/rtp/gstbasertpdepayload.c:
(gst_base_rtp_depayload_setcaps):
* gst-libs/gst/video/video.c: (gst_video_frame_rate),
(gst_video_get_size):
* gst/audiorate/gstaudiorate.c: (gst_audio_rate_setcaps):
Don't leak references returned by gst_pad_get_parent()
(#333663, based on patch by: Christophe Fergeau).
2006-03-07 12:49:03 +00:00

99 lines
2.8 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Library <2002> Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* 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,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "video.h"
/* This is simply a convenience function, nothing more or less */
const GValue *
gst_video_frame_rate (GstPad * pad)
{
const GValue *fps;
gchar *fps_string;
const GstCaps *caps = NULL;
GstStructure *structure;
/* get pad caps */
caps = GST_PAD_CAPS (pad);
if (caps == NULL) {
g_warning ("gstvideo: failed to get caps of pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
return NULL;
}
structure = gst_caps_get_structure (caps, 0);
if ((fps = gst_structure_get_value (structure, "framerate")) == NULL) {
g_warning ("gstvideo: failed to get framerate property of pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
return NULL;
}
if (!GST_VALUE_HOLDS_FRACTION (fps)) {
g_warning
("gstvideo: framerate property of pad %s:%s is not of type Fraction",
GST_DEBUG_PAD_NAME (pad));
return NULL;
}
fps_string = gst_value_serialize (fps);
GST_DEBUG ("Framerate request on pad %s:%s: %s",
GST_DEBUG_PAD_NAME (pad), fps_string);
g_free (fps_string);
return fps;
}
gboolean
gst_video_get_size (GstPad * pad, gint * width, gint * height)
{
const GstCaps *caps = NULL;
GstStructure *structure;
gboolean ret;
g_return_val_if_fail (pad != NULL, FALSE);
g_return_val_if_fail (width != NULL, FALSE);
g_return_val_if_fail (height != NULL, FALSE);
caps = GST_PAD_CAPS (pad);
if (caps == NULL) {
g_warning ("gstvideo: failed to get caps of pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
return FALSE;
}
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", width);
ret &= gst_structure_get_int (structure, "height", height);
if (!ret) {
g_warning ("gstvideo: failed to get size properties on pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
return FALSE;
}
GST_DEBUG ("size request on pad %s:%s: %dx%d",
GST_DEBUG_PAD_NAME (pad), width ? *width : -1, height ? *height : -1);
return TRUE;
}