gstreamer/gst/videoscale/gstvideoscale.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2005 David Schleef <ds@schleef.org>
*
* 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.
*/
/**
* SECTION:element-videoscale
* @see_also: videorate, ffmpegcolorspace
*
* This element resizes video frames. By default the element will try to
* negotiate to the same size on the source and sinkpad so that no scaling
* is needed. It is therefore safe to insert this element in a pipeline to
* get more robust behaviour without any cost if no scaling is needed.
Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipe... Original commit message from CVS: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-overrides.txt: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.args: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: * docs/plugins/gst-plugins-base-plugins.signals: * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-playback.xml: * docs/plugins/inspect/plugin-queue2.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-uridecodebin.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsasink.c: * ext/alsa/gstalsasrc.c: * ext/gio/gstgiosink.c: * ext/gio/gstgiosrc.c: * ext/gio/gstgiostreamsink.c: * ext/gio/gstgiostreamsrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/theora/theoraparse.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * ext/vorbis/vorbisparse.c: * ext/vorbis/vorbistag.c: * gst/adder/gstadder.c: * gst/audioconvert/gstaudioconvert.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/gdp/gstgdpdepay.c: * gst/gdp/gstgdppay.c: * gst/playback/gstdecodebin2.c: * gst/playback/gstplaybin.c: * gst/playback/gstplaybin2.c: * gst/playback/gstqueue2.c: * gst/playback/gsturidecodebin.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpserversink.c: * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipelines are "simple" pipelines.
2008-07-11 06:10:24 +00:00
*
* This element supports a wide range of color spaces including various YUV and
* RGB formats and is therefore generally able to operate anywhere in a
* pipeline.
Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipe... Original commit message from CVS: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-overrides.txt: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.args: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: * docs/plugins/gst-plugins-base-plugins.signals: * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-playback.xml: * docs/plugins/inspect/plugin-queue2.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-uridecodebin.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsasink.c: * ext/alsa/gstalsasrc.c: * ext/gio/gstgiosink.c: * ext/gio/gstgiosrc.c: * ext/gio/gstgiostreamsink.c: * ext/gio/gstgiostreamsrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/theora/theoraparse.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * ext/vorbis/vorbisparse.c: * ext/vorbis/vorbistag.c: * gst/adder/gstadder.c: * gst/audioconvert/gstaudioconvert.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/gdp/gstgdpdepay.c: * gst/gdp/gstgdppay.c: * gst/playback/gstdecodebin2.c: * gst/playback/gstplaybin.c: * gst/playback/gstplaybin2.c: * gst/playback/gstqueue2.c: * gst/playback/gsturidecodebin.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpserversink.c: * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipelines are "simple" pipelines.
2008-07-11 06:10:24 +00:00
*
* <refsect2>
* <title>Example pipelines</title>
Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipe... Original commit message from CVS: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-overrides.txt: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.args: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: * docs/plugins/gst-plugins-base-plugins.signals: * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-playback.xml: * docs/plugins/inspect/plugin-queue2.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-uridecodebin.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsasink.c: * ext/alsa/gstalsasrc.c: * ext/gio/gstgiosink.c: * ext/gio/gstgiosrc.c: * ext/gio/gstgiostreamsink.c: * ext/gio/gstgiostreamsrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/theora/theoraparse.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * ext/vorbis/vorbisparse.c: * ext/vorbis/vorbistag.c: * gst/adder/gstadder.c: * gst/audioconvert/gstaudioconvert.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/gdp/gstgdpdepay.c: * gst/gdp/gstgdppay.c: * gst/playback/gstdecodebin2.c: * gst/playback/gstplaybin.c: * gst/playback/gstplaybin2.c: * gst/playback/gstqueue2.c: * gst/playback/gsturidecodebin.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpserversink.c: * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipelines are "simple" pipelines.
2008-07-11 06:10:24 +00:00
* |[
* gst-launch -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! ffmpegcolorspace ! videoscale ! ximagesink
Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipe... Original commit message from CVS: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-overrides.txt: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.args: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: * docs/plugins/gst-plugins-base-plugins.signals: * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-playback.xml: * docs/plugins/inspect/plugin-queue2.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-uridecodebin.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsasink.c: * ext/alsa/gstalsasrc.c: * ext/gio/gstgiosink.c: * ext/gio/gstgiosrc.c: * ext/gio/gstgiostreamsink.c: * ext/gio/gstgiostreamsrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/theora/theoraparse.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * ext/vorbis/vorbisparse.c: * ext/vorbis/vorbistag.c: * gst/adder/gstadder.c: * gst/audioconvert/gstaudioconvert.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/gdp/gstgdpdepay.c: * gst/gdp/gstgdppay.c: * gst/playback/gstdecodebin2.c: * gst/playback/gstplaybin.c: * gst/playback/gstplaybin2.c: * gst/playback/gstqueue2.c: * gst/playback/gsturidecodebin.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpserversink.c: * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipelines are "simple" pipelines.
2008-07-11 06:10:24 +00:00
* ]| Decode an Ogg/Theora and display the video using ximagesink. Since
* ximagesink cannot perform scaling, the video scaling will be performed by
* videoscale when you resize the video window.
* To create the test Ogg/Theora file refer to the documentation of theoraenc.
Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipe... Original commit message from CVS: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-overrides.txt: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.args: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: * docs/plugins/gst-plugins-base-plugins.signals: * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-playback.xml: * docs/plugins/inspect/plugin-queue2.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-uridecodebin.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsasink.c: * ext/alsa/gstalsasrc.c: * ext/gio/gstgiosink.c: * ext/gio/gstgiosrc.c: * ext/gio/gstgiostreamsink.c: * ext/gio/gstgiostreamsrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/theora/theoraparse.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * ext/vorbis/vorbisparse.c: * ext/vorbis/vorbistag.c: * gst/adder/gstadder.c: * gst/audioconvert/gstaudioconvert.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/gdp/gstgdpdepay.c: * gst/gdp/gstgdppay.c: * gst/playback/gstdecodebin2.c: * gst/playback/gstplaybin.c: * gst/playback/gstplaybin2.c: * gst/playback/gstqueue2.c: * gst/playback/gsturidecodebin.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpserversink.c: * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipelines are "simple" pipelines.
2008-07-11 06:10:24 +00:00
* |[
* gst-launch -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoscale ! video/x-raw-yuv, width=50 ! xvimagesink
Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipe... Original commit message from CVS: * docs/plugins/gst-plugins-base-plugins-docs.sgml: * docs/plugins/gst-plugins-base-plugins-overrides.txt: * docs/plugins/gst-plugins-base-plugins-sections.txt: * docs/plugins/gst-plugins-base-plugins.args: * docs/plugins/gst-plugins-base-plugins.hierarchy: * docs/plugins/gst-plugins-base-plugins.interfaces: * docs/plugins/gst-plugins-base-plugins.prerequisites: * docs/plugins/gst-plugins-base-plugins.signals: * docs/plugins/inspect/plugin-adder.xml: * docs/plugins/inspect/plugin-alsa.xml: * docs/plugins/inspect/plugin-audioconvert.xml: * docs/plugins/inspect/plugin-audiorate.xml: * docs/plugins/inspect/plugin-audioresample.xml: * docs/plugins/inspect/plugin-audiotestsrc.xml: * docs/plugins/inspect/plugin-cdparanoia.xml: * docs/plugins/inspect/plugin-decodebin.xml: * docs/plugins/inspect/plugin-ffmpegcolorspace.xml: * docs/plugins/inspect/plugin-gdp.xml: * docs/plugins/inspect/plugin-gnomevfs.xml: * docs/plugins/inspect/plugin-libvisual.xml: * docs/plugins/inspect/plugin-ogg.xml: * docs/plugins/inspect/plugin-pango.xml: * docs/plugins/inspect/plugin-playback.xml: * docs/plugins/inspect/plugin-queue2.xml: * docs/plugins/inspect/plugin-subparse.xml: * docs/plugins/inspect/plugin-tcp.xml: * docs/plugins/inspect/plugin-theora.xml: * docs/plugins/inspect/plugin-typefindfunctions.xml: * docs/plugins/inspect/plugin-uridecodebin.xml: * docs/plugins/inspect/plugin-video4linux.xml: * docs/plugins/inspect/plugin-videorate.xml: * docs/plugins/inspect/plugin-videoscale.xml: * docs/plugins/inspect/plugin-videotestsrc.xml: * docs/plugins/inspect/plugin-volume.xml: * docs/plugins/inspect/plugin-vorbis.xml: * docs/plugins/inspect/plugin-ximagesink.xml: * docs/plugins/inspect/plugin-xvimagesink.xml: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsasink.c: * ext/alsa/gstalsasrc.c: * ext/gio/gstgiosink.c: * ext/gio/gstgiosrc.c: * ext/gio/gstgiostreamsink.c: * ext/gio/gstgiostreamsrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/theora/theoraparse.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * ext/vorbis/vorbisparse.c: * ext/vorbis/vorbistag.c: * gst/adder/gstadder.c: * gst/audioconvert/gstaudioconvert.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/gdp/gstgdpdepay.c: * gst/gdp/gstgdppay.c: * gst/playback/gstdecodebin2.c: * gst/playback/gstplaybin.c: * gst/playback/gstplaybin2.c: * gst/playback/gstqueue2.c: * gst/playback/gsturidecodebin.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpserversink.c: * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: Cleanup Plugin docs. Link to signals and properties. Fix sub-section titles. Drop mentining that all our example pipelines are "simple" pipelines.
2008-07-11 06:10:24 +00:00
* ]| Decode an Ogg/Theora and display the video using xvimagesink with a width
* of 50.
* </refsect2>
*
* Last reviewed on 2006-03-02 (0.10.4)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <gst/video/video.h>
#include <liboil/liboil.h>
#include "gstvideoscale.h"
#include "vs_image.h"
#include "vs_4tap.h"
/* debug variable definition */
GST_DEBUG_CATEGORY (video_scale_debug);
/* elementfactory information */
make GstElementDetails const Original commit message from CVS: * ext/alsa/gstalsamixerelement.c: * ext/alsa/gstalsasrc.c: * ext/cdparanoia/gstcdparanoiasrc.c: * ext/gnomevfs/gstgnomevfssink.c: * ext/gnomevfs/gstgnomevfssrc.c: * ext/ogg/gstoggdemux.c: * ext/ogg/gstoggmux.c: * ext/ogg/gstoggparse.c: * ext/ogg/gstogmparse.c: * ext/pango/gstclockoverlay.c: * ext/pango/gsttextoverlay.c: * ext/pango/gsttextrender.c: * ext/pango/gsttimeoverlay.c: * ext/theora/theoradec.c: * ext/theora/theoraenc.c: * ext/vorbis/vorbisdec.c: * ext/vorbis/vorbisenc.c: * gst-libs/gst/audio/gstaudiofilter.c: * gst-libs/gst/audio/gstaudiofiltertemplate.c: * gst/audioconvert/gstaudioconvert.c: * gst/audiorate/gstaudiorate.c: * gst/audioresample/gstaudioresample.c: * gst/audiotestsrc/gstaudiotestsrc.c: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: * gst/playback/gstdecodebin.c: * gst/playback/gstplaybin.c: * gst/playback/gststreamselector.c: * gst/subparse/gstsubparse.c: * gst/tcp/gstmultifdsink.c: * gst/tcp/gsttcpclientsink.c: * gst/tcp/gsttcpclientsrc.c: * gst/tcp/gsttcpserversink.c: * gst/tcp/gsttcpserversrc.c: * gst/typefind/gsttypefindfunctions.c: (plugin_init): * gst/videorate/gstvideorate.c: * gst/videoscale/gstvideoscale.c: * gst/videotestsrc/gstvideotestsrc.c: * gst/volume/gstvolume.c: * sys/v4l/gstv4ljpegsrc.c: * sys/v4l/gstv4lmjpegsink.c: * sys/v4l/gstv4lmjpegsrc.c: * sys/v4l/gstv4lsrc.c: * sys/ximage/ximagesink.c: * sys/xvimage/xvimagesink.c: * tests/check/libs/cddabasesrc.c: make GstElementDetails const
2006-04-28 19:46:37 +00:00
static const GstElementDetails video_scale_details =
GST_ELEMENT_DETAILS ("Video scaler",
"Filter/Effect/Video",
"Resizes video",
"Wim Taymans <wim.taymans@chello.be>");
#define DEFAULT_PROP_METHOD GST_VIDEO_SCALE_BILINEAR
enum
{
PROP_0,
PROP_METHOD
/* FILL ME */
};
static GstStaticCaps gst_video_scale_format_caps[] = {
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx),
GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB),
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx),
GST_STATIC_CAPS (GST_VIDEO_CAPS_xBGR),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA),
GST_STATIC_CAPS (GST_VIDEO_CAPS_ARGB),
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRA),
GST_STATIC_CAPS (GST_VIDEO_CAPS_ABGR),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB),
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGR),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YUY2")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YVYU")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("UYVY")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("Y800")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YV12")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB_16),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB_15)
};
enum
{
GST_VIDEO_SCALE_RGBx = 0,
GST_VIDEO_SCALE_xRGB,
GST_VIDEO_SCALE_BGRx,
GST_VIDEO_SCALE_xBGR,
GST_VIDEO_SCALE_RGBA,
GST_VIDEO_SCALE_ARGB,
GST_VIDEO_SCALE_BGRA,
GST_VIDEO_SCALE_ABGR,
GST_VIDEO_SCALE_RGB,
GST_VIDEO_SCALE_BGR,
GST_VIDEO_SCALE_AYUV,
GST_VIDEO_SCALE_YUY2,
GST_VIDEO_SCALE_YVYU,
GST_VIDEO_SCALE_UYVY,
GST_VIDEO_SCALE_Y,
GST_VIDEO_SCALE_I420,
GST_VIDEO_SCALE_YV12,
GST_VIDEO_SCALE_RGB565,
GST_VIDEO_SCALE_RGB555
};
#define GST_TYPE_VIDEO_SCALE_METHOD (gst_video_scale_method_get_type())
static GType
gst_video_scale_method_get_type (void)
{
static GType video_scale_method_type = 0;
static const GEnumValue video_scale_methods[] = {
{GST_VIDEO_SCALE_NEAREST, "Nearest Neighbour", "nearest-neighbour"},
{GST_VIDEO_SCALE_BILINEAR, "Bilinear", "bilinear"},
{GST_VIDEO_SCALE_4TAP, "4-tap", "4-tap"},
{0, NULL, NULL},
};
if (!video_scale_method_type) {
video_scale_method_type =
g_enum_register_static ("GstVideoScaleMethod", video_scale_methods);
}
return video_scale_method_type;
}
static GstCaps *
gst_video_scale_get_capslist (void)
{
static GstCaps *caps;
if (caps == NULL) {
int i;
caps = gst_caps_new_empty ();
for (i = 0; i < G_N_ELEMENTS (gst_video_scale_format_caps); i++)
gst_caps_append (caps,
gst_caps_make_writable
(gst_static_caps_get (&gst_video_scale_format_caps[i])));
}
return caps;
}
static GstPadTemplate *
gst_video_scale_src_template_factory (void)
{
return gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_ref (gst_video_scale_get_capslist ()));
}
static GstPadTemplate *
gst_video_scale_sink_template_factory (void)
{
return gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_ref (gst_video_scale_get_capslist ()));
}
static void gst_video_scale_base_init (gpointer g_class);
static void gst_video_scale_class_init (GstVideoScaleClass * klass);
static void gst_video_scale_init (GstVideoScale * videoscale);
static void gst_video_scale_finalize (GstVideoScale * videoscale);
static gboolean gst_video_scale_src_event (GstBaseTransform * trans,
GstEvent * event);
/* base transform vmethods */
static GstCaps *gst_video_scale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps);
static gboolean gst_video_scale_set_caps (GstBaseTransform * trans,
GstCaps * in, GstCaps * out);
static gboolean gst_video_scale_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, guint * size);
static GstFlowReturn gst_video_scale_transform (GstBaseTransform * trans,
GstBuffer * in, GstBuffer * out);
static void gst_video_scale_fixate_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
static void gst_video_scale_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_video_scale_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
GType
gst_video_scale_get_type (void)
{
static GType video_scale_type = 0;
if (!video_scale_type) {
static const GTypeInfo video_scale_info = {
sizeof (GstVideoScaleClass),
gst_video_scale_base_init,
NULL,
(GClassInitFunc) gst_video_scale_class_init,
NULL,
NULL,
sizeof (GstVideoScale),
0,
(GInstanceInitFunc) gst_video_scale_init,
};
video_scale_type =
g_type_register_static (GST_TYPE_BASE_TRANSFORM, "GstVideoScale",
&video_scale_info, 0);
}
return video_scale_type;
}
static void
gst_video_scale_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &video_scale_details);
gst_element_class_add_pad_template (element_class,
gst_video_scale_sink_template_factory ());
gst_element_class_add_pad_template (element_class,
gst_video_scale_src_template_factory ());
}
static void
gst_video_scale_class_init (GstVideoScaleClass * klass)
{
GObjectClass *gobject_class;
GstBaseTransformClass *trans_class;
gobject_class = (GObjectClass *) klass;
trans_class = (GstBaseTransformClass *) klass;
gobject_class->finalize = (GObjectFinalizeFunc) gst_video_scale_finalize;
gobject_class->set_property = gst_video_scale_set_property;
gobject_class->get_property = gst_video_scale_get_property;
g_object_class_install_property (gobject_class, PROP_METHOD,
g_param_spec_enum ("method", "method", "method",
Use G_PARAM_STATIC_STRINGS everywhere for GParamSpecs that use static strings (i.e. all). This gives us less memory u... Original commit message from CVS: * configure.ac: * ext/alsa/gstalsamixerelement.c: (gst_alsa_mixer_element_class_init): * ext/alsa/gstalsasink.c: (gst_alsasink_class_init): * ext/alsa/gstalsasrc.c: (gst_alsasrc_class_init): * ext/cdparanoia/gstcdparanoiasrc.c: (gst_cd_paranoia_src_class_init): * ext/gio/gstgiosink.c: (gst_gio_sink_class_init): * ext/gio/gstgiosrc.c: (gst_gio_src_class_init): * ext/gio/gstgiostreamsink.c: (gst_gio_stream_sink_class_init): * ext/gio/gstgiostreamsrc.c: (gst_gio_stream_src_class_init): * ext/gnomevfs/gstgnomevfssink.c: (gst_gnome_vfs_sink_class_init): * ext/gnomevfs/gstgnomevfssrc.c: (gst_gnome_vfs_src_class_init): * ext/ogg/gstoggmux.c: (gst_ogg_mux_class_init): * ext/pango/gsttextoverlay.c: (gst_text_overlay_class_init): * ext/pango/gsttextrender.c: (gst_text_render_class_init): * ext/theora/theoradec.c: (gst_theora_dec_class_init): * ext/theora/theoraenc.c: (gst_theora_enc_class_init): * ext/theora/theoraparse.c: (gst_theora_parse_class_init): * ext/vorbis/vorbisenc.c: (gst_vorbis_enc_class_init): * gst-libs/gst/audio/gstaudiofiltertemplate.c: (gst_audio_filter_template_class_init): * gst-libs/gst/audio/gstbaseaudiosink.c: (gst_base_audio_sink_class_init): * gst-libs/gst/audio/gstbaseaudiosrc.c: (gst_base_audio_src_class_init): * gst-libs/gst/cdda/gstcddabasesrc.c: (gst_cdda_base_src_class_init): * gst-libs/gst/interfaces/mixertrack.c: (gst_mixer_track_class_init): * gst-libs/gst/rtp/gstbasertpdepayload.c: (gst_base_rtp_depayload_class_init): * gst-libs/gst/rtp/gstbasertppayload.c: (gst_basertppayload_class_init): * gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_class_init): * gst/audiorate/gstaudiorate.c: (gst_audio_rate_class_init): * gst/audioresample/gstaudioresample.c: (gst_audioresample_class_init): * gst/audiotestsrc/gstaudiotestsrc.c: (gst_audio_test_src_class_init): * gst/gdp/gstgdppay.c: (gst_gdp_pay_class_init): * gst/playback/gstdecodebin2.c: (gst_decode_bin_class_init): * gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init), (preroll_unlinked): * gst/playback/gstplaybin.c: (gst_play_bin_class_init): * gst/playback/gstplaybin2.c: (gst_play_bin_class_init): * gst/playback/gstplaysink.c: (gst_play_sink_class_init): * gst/playback/gstqueue2.c: (gst_queue_class_init): * gst/playback/gststreaminfo.c: (gst_stream_info_class_init): * gst/playback/gststreamselector.c: (gst_selector_pad_class_init), (gst_stream_selector_class_init): * gst/playback/gsturidecodebin.c: (gst_uri_decode_bin_class_init): * gst/subparse/gstsubparse.c: (gst_sub_parse_class_init): * gst/tcp/gstmultifdsink.c: (gst_multi_fd_sink_class_init): * gst/tcp/gsttcpclientsink.c: (gst_tcp_client_sink_class_init): * gst/tcp/gsttcpclientsrc.c: (gst_tcp_client_src_class_init): * gst/tcp/gsttcpserversink.c: (gst_tcp_server_sink_class_init): * gst/tcp/gsttcpserversrc.c: (gst_tcp_server_src_class_init): * gst/videorate/gstvideorate.c: (gst_video_rate_class_init): * gst/videoscale/gstvideoscale.c: (gst_video_scale_class_init): * gst/videotestsrc/gstvideotestsrc.c: (gst_video_test_src_class_init): * gst/volume/gstvolume.c: (gst_volume_class_init): * sys/v4l/gstv4lelement.c: (gst_v4lelement_class_init): * sys/v4l/gstv4lmjpegsink.c: (gst_v4lmjpegsink_class_init): * sys/v4l/gstv4lmjpegsrc.c: (gst_v4lmjpegsrc_class_init): * sys/v4l/gstv4lsrc.c: (gst_v4lsrc_class_init): * sys/ximage/ximagesink.c: (gst_ximagesink_class_init): * sys/xvimage/xvimagesink.c: (gst_xvimagesink_class_init): Use G_PARAM_STATIC_STRINGS everywhere for GParamSpecs that use static strings (i.e. all). This gives us less memory usage, fewer allocations and thus less memory defragmentation. Depend on core CVS for this. Fixes bug #523806.
2008-03-22 15:00:53 +00:00
GST_TYPE_VIDEO_SCALE_METHOD, DEFAULT_PROP_METHOD,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_scale_transform_caps);
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_scale_set_caps);
trans_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_video_scale_get_unit_size);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_video_scale_transform);
trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_video_scale_fixate_caps);
trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_scale_src_event);
trans_class->passthrough_on_same_caps = TRUE;
parent_class = g_type_class_peek_parent (klass);
}
static void
gst_video_scale_init (GstVideoScale * videoscale)
{
gst_base_transform_set_qos_enabled (GST_BASE_TRANSFORM (videoscale), TRUE);
videoscale->tmp_buf = NULL;
videoscale->method = DEFAULT_PROP_METHOD;
}
static void
gst_video_scale_finalize (GstVideoScale * videoscale)
{
if (videoscale->tmp_buf)
g_free (videoscale->tmp_buf);
G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (videoscale));
}
static void
gst_video_scale_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoScale *vscale = GST_VIDEO_SCALE (object);
switch (prop_id) {
case PROP_METHOD:
GST_OBJECT_LOCK (vscale);
vscale->method = g_value_get_enum (value);
GST_OBJECT_UNLOCK (vscale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_scale_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstVideoScale *vscale = GST_VIDEO_SCALE (object);
switch (prop_id) {
case PROP_METHOD:
GST_OBJECT_LOCK (vscale);
g_value_set_enum (value, vscale->method);
GST_OBJECT_UNLOCK (vscale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_video_scale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
{
GstVideoScale *videoscale;
GstCaps *ret;
GstStructure *structure;
const GValue *par;
gint method;
/* this function is always called with a simple caps */
g_return_val_if_fail (GST_CAPS_IS_SIMPLE (caps), NULL);
videoscale = GST_VIDEO_SCALE (trans);
GST_OBJECT_LOCK (videoscale);
method = videoscale->method;
GST_OBJECT_UNLOCK (videoscale);
structure = gst_caps_get_structure (caps, 0);
/* check compatibility of format and method before we copy the input caps */
if (method == GST_VIDEO_SCALE_4TAP) {
guint32 fourcc;
if (!gst_structure_has_name (structure, "video/x-raw-yuv"))
goto method_not_implemented_for_format;
if (!gst_structure_get_fourcc (structure, "format", &fourcc))
goto method_not_implemented_for_format;
if (fourcc != GST_MAKE_FOURCC ('I', '4', '2', '0') &&
fourcc != GST_MAKE_FOURCC ('Y', 'V', '1', '2'))
goto method_not_implemented_for_format;
}
ret = gst_caps_copy (caps);
structure = gst_structure_copy (gst_caps_get_structure (ret, 0));
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
gst_caps_merge_structure (ret, gst_structure_copy (structure));
/* if pixel aspect ratio, make a range of it */
if ((par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) {
gst_structure_set (structure,
"pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_caps_merge_structure (ret, structure);
} else {
gst_structure_free (structure);
}
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
return ret;
method_not_implemented_for_format:
{
GST_DEBUG_OBJECT (trans, "method %d not implemented for format %"
GST_PTR_FORMAT ", returning empty caps", method, caps);
return gst_caps_new_empty ();
}
}
static int
gst_video_scale_get_format (GstCaps * caps)
{
int i;
GstCaps *icaps, *scaps;
for (i = 0; i < G_N_ELEMENTS (gst_video_scale_format_caps); i++) {
scaps = gst_static_caps_get (&gst_video_scale_format_caps[i]);
icaps = gst_caps_intersect (caps, scaps);
if (!gst_caps_is_empty (icaps)) {
gst_caps_unref (icaps);
return i;
}
gst_caps_unref (icaps);
}
return -1;
}
/* calculate the size of a buffer */
static gboolean
gst_video_scale_prepare_size (GstVideoScale * videoscale, gint format,
VSImage * img, gint width, gint height, guint * size)
{
gboolean res = TRUE;
img->width = width;
img->height = height;
switch (format) {
case GST_VIDEO_SCALE_RGBx:
case GST_VIDEO_SCALE_xRGB:
case GST_VIDEO_SCALE_BGRx:
case GST_VIDEO_SCALE_xBGR:
case GST_VIDEO_SCALE_RGBA:
case GST_VIDEO_SCALE_ARGB:
case GST_VIDEO_SCALE_BGRA:
case GST_VIDEO_SCALE_ABGR:
case GST_VIDEO_SCALE_AYUV:
img->stride = img->width * 4;
*size = img->stride * img->height;
break;
case GST_VIDEO_SCALE_RGB:
case GST_VIDEO_SCALE_BGR:
img->stride = GST_ROUND_UP_4 (img->width * 3);
*size = img->stride * img->height;
break;
case GST_VIDEO_SCALE_YUY2:
case GST_VIDEO_SCALE_YVYU:
case GST_VIDEO_SCALE_UYVY:
img->stride = GST_ROUND_UP_4 (img->width * 2);
*size = img->stride * img->height;
break;
case GST_VIDEO_SCALE_Y:
img->stride = GST_ROUND_UP_4 (img->width);
*size = img->stride * img->height;
break;
case GST_VIDEO_SCALE_I420:
case GST_VIDEO_SCALE_YV12:
{
gulong img_u_stride, img_u_height;
img->stride = GST_ROUND_UP_4 (img->width);
img_u_height = GST_ROUND_UP_2 (img->height) / 2;
img_u_stride = GST_ROUND_UP_4 (img->stride / 2);
*size = img->stride * GST_ROUND_UP_2 (img->height) +
2 * img_u_stride * img_u_height;
break;
}
case GST_VIDEO_SCALE_RGB565:
img->stride = GST_ROUND_UP_4 (img->width * 2);
*size = img->stride * img->height;
break;
case GST_VIDEO_SCALE_RGB555:
img->stride = GST_ROUND_UP_4 (img->width * 2);
*size = img->stride * img->height;
break;
default:
goto unknown_format;
}
return res;
/* ERRORS */
unknown_format:
{
GST_ELEMENT_ERROR (videoscale, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported format %d", videoscale->format));
return FALSE;
}
}
static gboolean
parse_caps (GstCaps * caps, gint * format, gint * width, gint * height)
{
gboolean ret;
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", width);
ret &= gst_structure_get_int (structure, "height", height);
if (format)
*format = gst_video_scale_get_format (caps);
return ret;
}
static gboolean
gst_video_scale_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
{
GstVideoScale *videoscale;
gboolean ret;
videoscale = GST_VIDEO_SCALE (trans);
ret = parse_caps (in, &videoscale->format, &videoscale->from_width,
&videoscale->from_height);
ret &= parse_caps (out, NULL, &videoscale->to_width, &videoscale->to_height);
if (!ret)
goto done;
if (!(ret = gst_video_scale_prepare_size (videoscale, videoscale->format,
&videoscale->src, videoscale->from_width, videoscale->from_height,
&videoscale->src_size)))
/* prepare size has posted an error when it returns FALSE */
goto done;
if (!(ret = gst_video_scale_prepare_size (videoscale, videoscale->format,
&videoscale->dest, videoscale->to_width, videoscale->to_height,
&videoscale->dest_size)))
/* prepare size has posted an error when it returns FALSE */
goto done;
if (videoscale->tmp_buf)
g_free (videoscale->tmp_buf);
videoscale->tmp_buf = g_malloc (videoscale->dest.stride * 4);
/* FIXME: par */
GST_DEBUG_OBJECT (videoscale, "from=%dx%d, size %d -> to=%dx%d, size %d",
videoscale->from_width, videoscale->from_height, videoscale->src_size,
videoscale->to_width, videoscale->to_height, videoscale->dest_size);
done:
return ret;
}
static gboolean
gst_video_scale_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size)
{
GstVideoScale *videoscale;
gint format, width, height;
VSImage img;
g_assert (size);
videoscale = GST_VIDEO_SCALE (trans);
if (!parse_caps (caps, &format, &width, &height))
return FALSE;
if (!gst_video_scale_prepare_size (videoscale, format, &img, width, height,
size))
return FALSE;
return TRUE;
}
static void
gst_video_scale_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ins, *outs;
const GValue *from_par, *to_par;
g_return_if_fail (gst_caps_is_fixed (caps));
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
ins = gst_caps_get_structure (caps, 0);
outs = gst_caps_get_structure (othercaps, 0);
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
/* we have both PAR but they might not be fixated */
if (from_par && to_par) {
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
gint count = 0, w = 0, h = 0;
guint num, den;
/* from_par should be fixed */
g_return_if_fail (gst_value_is_fixed (from_par));
from_par_n = gst_value_get_fraction_numerator (from_par);
from_par_d = gst_value_get_fraction_denominator (from_par);
/* fixate the out PAR */
if (!gst_value_is_fixed (to_par)) {
GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", from_par_n,
from_par_d);
gst_structure_fixate_field_nearest_fraction (outs, "pixel-aspect-ratio",
from_par_n, from_par_d);
}
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
/* if both width and height are already fixed, we can't do anything
* about it anymore */
if (gst_structure_get_int (outs, "width", &w))
++count;
if (gst_structure_get_int (outs, "height", &h))
++count;
if (count == 2) {
GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
w, h);
return;
}
gst_structure_get_int (ins, "width", &from_w);
gst_structure_get_int (ins, "height", &from_h);
if (!gst_video_calculate_display_ratio (&num, &den, from_w, from_h,
from_par_n, from_par_d, to_par_n, to_par_d)) {
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
("Error calculating the output scaled size - integer overflow"));
return;
}
GST_DEBUG_OBJECT (base,
"scaling input with %dx%d and PAR %d/%d to output PAR %d/%d",
from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d);
GST_DEBUG_OBJECT (base, "resulting output should respect ratio of %d/%d",
num, den);
/* now find a width x height that respects this display ratio.
* prefer those that have one of w/h the same as the incoming video
* using wd / hd = num / den */
/* if one of the output width or height is fixed, we work from there */
if (h) {
GST_DEBUG_OBJECT (base, "height is fixed,scaling width");
w = (guint) gst_util_uint64_scale_int (h, num, den);
} else if (w) {
GST_DEBUG_OBJECT (base, "width is fixed, scaling height");
h = (guint) gst_util_uint64_scale_int (w, den, num);
} else {
/* none of width or height is fixed, figure out both of them based only on
* the input width and height */
/* check hd / den is an integer scale factor, and scale wd with the PAR */
if (from_h % den == 0) {
GST_DEBUG_OBJECT (base, "keeping video height");
h = from_h;
w = (guint) gst_util_uint64_scale_int (h, num, den);
} else if (from_w % num == 0) {
GST_DEBUG_OBJECT (base, "keeping video width");
w = from_w;
h = (guint) gst_util_uint64_scale_int (w, den, num);
} else {
GST_DEBUG_OBJECT (base, "approximating but keeping video height");
h = from_h;
w = (guint) gst_util_uint64_scale_int (h, num, den);
}
}
GST_DEBUG_OBJECT (base, "scaling to %dx%d", w, h);
/* now fixate */
gst_structure_fixate_field_nearest_int (outs, "width", w);
gst_structure_fixate_field_nearest_int (outs, "height", h);
} else {
gint width, height;
if (gst_structure_get_int (ins, "width", &width)) {
if (gst_structure_has_field (outs, "width")) {
gst_structure_fixate_field_nearest_int (outs, "width", width);
}
}
if (gst_structure_get_int (ins, "height", &height)) {
if (gst_structure_has_field (outs, "height")) {
gst_structure_fixate_field_nearest_int (outs, "height", height);
}
}
}
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
}
static gboolean
gst_video_scale_prepare_image (gint format, GstBuffer * buf,
VSImage * img, VSImage * img_u, VSImage * img_v)
{
gboolean res = TRUE;
img->pixels = GST_BUFFER_DATA (buf);
switch (format) {
case GST_VIDEO_SCALE_I420:
case GST_VIDEO_SCALE_YV12:
img_u->pixels = img->pixels + GST_ROUND_UP_2 (img->height) * img->stride;
img_u->height = GST_ROUND_UP_2 (img->height) / 2;
img_u->width = GST_ROUND_UP_2 (img->width) / 2;
img_u->stride = GST_ROUND_UP_4 (img_u->width);
memcpy (img_v, img_u, sizeof (*img_v));
img_v->pixels = img_u->pixels + img_u->height * img_u->stride;
break;
default:
break;
}
return res;
}
static GstFlowReturn
gst_video_scale_transform (GstBaseTransform * trans, GstBuffer * in,
GstBuffer * out)
{
GstVideoScale *videoscale;
GstFlowReturn ret = GST_FLOW_OK;
VSImage *dest;
VSImage *src;
VSImage dest_u;
VSImage dest_v;
VSImage src_u;
VSImage src_v;
gint method;
videoscale = GST_VIDEO_SCALE (trans);
GST_OBJECT_LOCK (videoscale);
method = videoscale->method;
GST_OBJECT_UNLOCK (videoscale);
src = &videoscale->src;
dest = &videoscale->dest;
gst_video_scale_prepare_image (videoscale->format, in, src, &src_u, &src_v);
gst_video_scale_prepare_image (videoscale->format, out, dest, &dest_u,
&dest_v);
switch (method) {
case GST_VIDEO_SCALE_NEAREST:
GST_LOG_OBJECT (videoscale, "doing nearest scaling");
switch (videoscale->format) {
case GST_VIDEO_SCALE_RGBx:
case GST_VIDEO_SCALE_xRGB:
case GST_VIDEO_SCALE_BGRx:
case GST_VIDEO_SCALE_xBGR:
case GST_VIDEO_SCALE_RGBA:
case GST_VIDEO_SCALE_ARGB:
case GST_VIDEO_SCALE_BGRA:
case GST_VIDEO_SCALE_ABGR:
case GST_VIDEO_SCALE_AYUV:
vs_image_scale_nearest_RGBA (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_RGB:
case GST_VIDEO_SCALE_BGR:
vs_image_scale_nearest_RGB (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_YUY2:
case GST_VIDEO_SCALE_YVYU:
vs_image_scale_nearest_YUYV (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_UYVY:
vs_image_scale_nearest_UYVY (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_Y:
vs_image_scale_nearest_Y (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_I420:
case GST_VIDEO_SCALE_YV12:
vs_image_scale_nearest_Y (dest, src, videoscale->tmp_buf);
vs_image_scale_nearest_Y (&dest_u, &src_u, videoscale->tmp_buf);
vs_image_scale_nearest_Y (&dest_v, &src_v, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_RGB565:
vs_image_scale_nearest_RGB565 (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_RGB555:
vs_image_scale_nearest_RGB555 (dest, src, videoscale->tmp_buf);
break;
default:
goto unsupported;
}
break;
case GST_VIDEO_SCALE_BILINEAR:
GST_LOG_OBJECT (videoscale, "doing bilinear scaling");
switch (videoscale->format) {
case GST_VIDEO_SCALE_RGBx:
case GST_VIDEO_SCALE_xRGB:
case GST_VIDEO_SCALE_BGRx:
case GST_VIDEO_SCALE_xBGR:
case GST_VIDEO_SCALE_RGBA:
case GST_VIDEO_SCALE_ARGB:
case GST_VIDEO_SCALE_BGRA:
case GST_VIDEO_SCALE_ABGR:
case GST_VIDEO_SCALE_AYUV:
vs_image_scale_linear_RGBA (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_RGB:
case GST_VIDEO_SCALE_BGR:
vs_image_scale_linear_RGB (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_YUY2:
case GST_VIDEO_SCALE_YVYU:
vs_image_scale_linear_YUYV (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_UYVY:
vs_image_scale_linear_UYVY (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_Y:
vs_image_scale_linear_Y (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_I420:
case GST_VIDEO_SCALE_YV12:
vs_image_scale_linear_Y (dest, src, videoscale->tmp_buf);
vs_image_scale_linear_Y (&dest_u, &src_u, videoscale->tmp_buf);
vs_image_scale_linear_Y (&dest_v, &src_v, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_RGB565:
vs_image_scale_linear_RGB565 (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEO_SCALE_RGB555:
vs_image_scale_linear_RGB555 (dest, src, videoscale->tmp_buf);
break;
default:
goto unsupported;
}
break;
case GST_VIDEO_SCALE_4TAP:
GST_LOG_OBJECT (videoscale, "doing 4tap scaling");
switch (videoscale->format) {
case GST_VIDEO_SCALE_I420:
case GST_VIDEO_SCALE_YV12:
vs_image_scale_4tap_Y (dest, src, videoscale->tmp_buf);
vs_image_scale_4tap_Y (&dest_u, &src_u, videoscale->tmp_buf);
vs_image_scale_4tap_Y (&dest_v, &src_v, videoscale->tmp_buf);
break;
default:
/* FIXME: update gst_video_scale_transform_caps once RGB and/or
* other YUV formats work too */
goto unsupported;
}
break;
default:
goto unknown_mode;
}
GST_LOG_OBJECT (videoscale, "pushing buffer of %d bytes",
GST_BUFFER_SIZE (out));
return ret;
/* ERRORS */
unsupported:
{
GST_ELEMENT_ERROR (videoscale, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported format %d for scaling method %d",
videoscale->format, method));
return GST_FLOW_ERROR;
}
unknown_mode:
{
GST_ELEMENT_ERROR (videoscale, STREAM, NOT_IMPLEMENTED, (NULL),
("Unknown scaling method %d", videoscale->method));
return GST_FLOW_ERROR;
}
}
static gboolean
gst_video_scale_src_event (GstBaseTransform * trans, GstEvent * event)
{
GstVideoScale *videoscale;
gboolean ret;
double a;
GstStructure *structure;
videoscale = GST_VIDEO_SCALE (trans);
GST_DEBUG_OBJECT (videoscale, "handling %s event",
GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
event =
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
examples/seeking/seek.c: Update seek example. Original commit message from CVS: * examples/seeking/seek.c: (setup_dynamic_link), (make_dv_pipeline), (make_vorbis_theora_pipeline), (query_rates), (query_positions_elems), (query_positions_pads), (do_seek): Update seek example. * ext/ogg/gstoggdemux.c: (gst_ogg_pad_event), (gst_ogg_pad_typefind), (gst_ogg_demux_chain_elem_pad), (gst_ogg_demux_queue_data), (gst_ogg_demux_chain_peer), (gst_ogg_pad_submit_packet), (gst_ogg_pad_submit_page), (gst_ogg_demux_handle_event), (gst_ogg_demux_deactivate_current_chain), (gst_ogg_demux_activate_chain), (gst_ogg_demux_perform_seek), (gst_ogg_demux_collect_chain_info), (gst_ogg_demux_collect_info), (gst_ogg_demux_chain), (gst_ogg_demux_send_event), (gst_ogg_demux_loop): * ext/ogg/gstoggmux.c: (gst_ogg_mux_collected): * ext/theora/theoradec.c: (theora_dec_src_event), (theora_dec_src_getcaps), (theora_dec_sink_event), (theora_dec_push), (theora_dec_chain): * ext/vorbis/Makefile.am: * ext/vorbis/vorbisdec.c: (vorbis_dec_src_event), (vorbis_dec_sink_event), (vorbis_dec_push), (vorbis_handle_data_packet): * ext/vorbis/vorbisenc.c: (gst_vorbisenc_sink_event), (gst_vorbisenc_chain): * gst/playback/gststreaminfo.c: (cb_probe): * gst/subparse/gstsubparse.c: (gst_subparse_src_event): * gst/videorate/gstvideorate.c: (gst_videorate_event): * gst/videoscale/gstvideoscale.c: (gst_videoscale_handle_src_event): * gst/videotestsrc/gstvideotestsrc.c: (gst_videotestsrc_event): * sys/ximage/ximagesink.c: (gst_ximagesink_show_frame), (gst_ximagesink_navigation_send_event): * sys/xvimage/xvimagesink.c: (gst_xvimagesink_navigation_send_event): Various event updates and cleanups
2005-07-27 18:34:29 +00:00
structure = (GstStructure *) gst_event_get_structure (event);
if (gst_structure_get_double (structure, "pointer_x", &a)) {
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
a * videoscale->from_width / videoscale->to_width, NULL);
}
if (gst_structure_get_double (structure, "pointer_y", &a)) {
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
a * videoscale->from_height / videoscale->to_height, NULL);
}
break;
case GST_EVENT_QOS:
break;
default:
break;
}
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event);
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
oil_init ();
if (!gst_element_register (plugin, "videoscale", GST_RANK_NONE,
GST_TYPE_VIDEO_SCALE))
return FALSE;
GST_DEBUG_CATEGORY_INIT (video_scale_debug, "videoscale", 0,
"videoscale element");
vs_4tap_init ();
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"videoscale",
"Resizes video", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)