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This adds a generic video functions library

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Original commit message from CVS:
This adds a generic video functions library
This commit is contained in:
Ronald S. Bultje 2002-09-26 12:20:12 +00:00
parent 8d31ac6af8
commit 895c730a13
7 changed files with 112 additions and 3 deletions
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1
configure.ac
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@ -1040,6 +1040,7 @@ gst-libs/gst/gconf/Makefile
gst-libs/gst/idct/Makefile
gst-libs/gst/resample/Makefile
gst-libs/gst/riff/Makefile
gst-libs/gst/video/Makefile
examples/dynparams/Makefile
examples/capsfilter/Makefile
examples/seeking/Makefile

4
gst-libs/gst/Makefile.am
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@ -4,6 +4,6 @@ else
GCONF_DIR=
endif
SUBDIRS = audio idct resample riff floatcast $(GCONF_DIR)
SUBDIRS = audio idct resample riff floatcast $(GCONF_DIR) video
DIST_SUBDIRS = audio idct resample riff floatcast gconf
DIST_SUBDIRS = audio idct resample riff floatcast gconf video

12
gst-libs/gst/video/Makefile.am Normal file
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@ -0,0 +1,12 @@
librarydir = $(libdir)/gst
library_LTLIBRARIES = libgstvideo.la
libgstvideo_la_SOURCES = video.c
libgstvideoincludedir = $(includedir)/@PACKAGE@-@VERSION@/gst/video
libgstvideoinclude_HEADERS = video.h
libgstvideo_la_LIBADD =
libgstvideo_la_CFLAGS = $(GST_CFLAGS) -finline-functions -ffast-math
libgstvideo_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)

64
gst-libs/gst/video/video.c Normal file
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@ -0,0 +1,64 @@
/* 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.
*/
#include "video.h"
#define NUM_UNITS 1000000000
/* This is simply a convenience function, nothing more or less */
gdouble
gst_video_frame_rate (GstPad *pad)
{
GstFormat dest_format = GST_FORMAT_UNITS;
gint64 dest_value = 0;
gdouble fps;
/* do a convert request on the source pad */
if (!gst_pad_convert(pad,
GST_FORMAT_TIME, GST_SECOND * NUM_UNITS,
&dest_format, &dest_value))
{
g_warning("gstvideo: pad %s:%s failed to convert time to unit!\n",
GST_ELEMENT_NAME(gst_pad_get_parent (pad)), GST_PAD_NAME(pad));
return 0.;
}
fps = ((gdouble) dest_value) / NUM_UNITS;
GST_DEBUG(GST_CAT_ELEMENT_PADS, "Framerate request on pad %s:%s - %lf fps",
GST_ELEMENT_NAME(gst_pad_get_parent (pad)), GST_PAD_NAME(pad), fps);
return fps;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
gst_plugin_set_longname (plugin, "Convenience routines for video plugins");
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gstvideo",
plugin_init
};

28
gst-libs/gst/video/video.h Normal file
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@ -0,0 +1,28 @@
/* 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.
*/
#ifndef __GST_VIDEO_CONVENIENCE_H__
#define __GST_VIDEO_CONVENIENCE_H__
#include <gst/gst.h>
gdouble gst_video_frame_rate (GstPad *pad);
#endif /* __GST_VIDEO_CONVENIENCE_H__ */

2
gst-plugins.spec.in
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@ -97,6 +97,7 @@ unset GCONF_DISABLE_MAKEFILE_SCHEMA_INSTALL
%{_libdir}/gst/libgstidct.so
%{_libdir}/gst/libgstresample.so
%{_libdir}/gst/libgstriff.so
%{_libdir}/gst/libgstvideo.so
%package -n gstreamer-plugins-devel
Summary: GStreamer Plugin Library Headers.
@ -114,6 +115,7 @@ GStreamer support libraries header files.
%{_includedir}/gst-plugins-%{version}/gst/idct/idct.h
%{_includedir}/gst-plugins-%{version}/gst/resample/resample.h
%{_includedir}/gst-plugins-%{version}/gst/riff/riff.h
%{_includedir}/gst-plugins-%{version}/gst/video/video.h
%{_libdir}/pkgconfig/gstreamer-libs.pc
# Here are all the packages depending on external libs #

4
gstreamer-libs-uninstalled.pc.in
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@ -2,5 +2,7 @@ Name: GStreamer Uninstalled Media-Specific Libraries
Description: Streaming-media framework media-specific libraries, not installed
Version: @VERSION@
Requires: gstreamer = @VERSION@
Libs: -L${pcfiledir}/gst-libs/gst/gconf
Libs: -L${pcfiledir}/gst-libs/gst/gconf \
-L${pcfiledir}/gst-libs/gst/audio \
-L${pcfiledir}/gst-libs/gst/video
Cflags: -I${pcfiledir}/gst-libs