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FFMPEG-based colorspace conversion plugin
Original commit message from CVS: FFMPEG-based colorspace conversion plugin
This commit is contained in:
Ronald S. Bultje
parent
86288171cb
commit
5b255e085e
3 changed files with 524 additions and 1 deletions
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@ -7,7 +7,8 @@ libgstffmpeg_la_SOURCES = gstffmpeg.c \
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gstffmpegdemux.c \
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gstffmpegenc.c \
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gstffmpegmux.c \
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gstffmpegprotocol.c
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gstffmpegprotocol.c \
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gstffmpegcolorspace.c
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libgstffmpeg_la_CFLAGS = $(GST_CFLAGS) \
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-I $(top_srcdir)/gst-libs/ext/ffmpeg/ffmpeg/libavcodec \
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@ -36,6 +36,7 @@ extern gboolean gst_ffmpegdemux_register (GstPlugin *plugin);
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extern gboolean gst_ffmpegdec_register (GstPlugin *plugin);
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extern gboolean gst_ffmpegenc_register (GstPlugin *plugin);
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extern gboolean gst_ffmpegmux_register (GstPlugin *plugin);
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extern gboolean gst_ffmpegcsp_register (GstPlugin *plugin);
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extern URLProtocol gstreamer_protocol;
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@ -50,6 +51,7 @@ plugin_init (GModule *module, GstPlugin *plugin)
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gst_ffmpegdec_register (plugin);
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/*gst_ffmpegdemux_register (plugin);*/
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/*gst_ffmpegmux_register (plugin);*/
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gst_ffmpegcsp_register (plugin);
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/*register_protocol (&gstreamer_protocol);*/
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520
ext/ffmpeg/gstffmpegcolorspace.c
Normal file
520
ext/ffmpeg/gstffmpegcolorspace.c
Normal file
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@ -0,0 +1,520 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* This file:
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_FFMPEG_UNINSTALLED
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#include <avcodec.h>
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#else
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#include <ffmpeg/avcodec.h>
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#endif
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#include <gst/gst.h>
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#include "gstffmpegcodecmap.h"
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#define GST_TYPE_FFMPEGCSP \
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(gst_ffmpegcsp_get_type())
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#define GST_FFMPEGCSP(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGCSP,GstFFMpegCsp))
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#define GST_FFMPEGCSP_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGCSP,GstFFMpegCsp))
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#define GST_IS_FFMPEGCSP(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGCSP))
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#define GST_IS_FFMPEGCSP_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGCSP))
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typedef struct _GstFFMpegCsp GstFFMpegCsp;
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typedef struct _GstFFMpegCspClass GstFFMpegCspClass;
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struct _GstFFMpegCsp {
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GstElement element;
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GstPad *sinkpad, *srcpad;
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gint width, height;
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gfloat fps;
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enum PixelFormat
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from_pixfmt,
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to_pixfmt;
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AVFrame *from_frame,
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*to_frame;
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GstCaps *sinkcaps;
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GstBufferPool *pool;
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};
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struct _GstFFMpegCspClass {
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GstElementClass parent_class;
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};
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/* elementfactory information */
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static GstElementDetails ffmpegcsp_details = {
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"FFMPEG Colorspace converter",
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"Filter/Effect",
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"LGPL",
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"Converts video from one colorspace to another",
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VERSION,
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"The FFMPEG crew, "
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"Ronald Bultje <rbultje@ronald.bitfreak.net>",
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"(C) 2003",
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};
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/* Stereo signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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};
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static GType gst_ffmpegcsp_get_type (void);
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static void gst_ffmpegcsp_class_init (GstFFMpegCspClass *klass);
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static void gst_ffmpegcsp_init (GstFFMpegCsp *space);
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static void gst_ffmpegcsp_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gst_ffmpegcsp_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static GstPadLinkReturn
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gst_ffmpegcsp_sinkconnect (GstPad *pad,
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GstCaps *caps);
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static GstPadLinkReturn
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gst_ffmpegcsp_srcconnect (GstPad *pad,
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GstCaps *caps);
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static GstPadLinkReturn
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gst_ffmpegcsp_srcconnect_func (GstPad *pad,
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GstCaps *caps,
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gboolean newcaps);
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static void gst_ffmpegcsp_chain (GstPad *pad,
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GstData *data);
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static GstElementStateReturn
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gst_ffmpegcsp_change_state (GstElement *element);
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static GstPadTemplate *srctempl, *sinktempl;
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static GstElementClass *parent_class = NULL;
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/*static guint gst_ffmpegcsp_signals[LAST_SIGNAL] = { 0 }; */
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static GstBufferPool *
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ffmpegcsp_get_bufferpool (GstPad *pad)
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{
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GstFFMpegCsp *space;
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space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
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if (space->from_pixfmt == space->to_pixfmt &&
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space->from_pixfmt != PIX_FMT_NB) {
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return gst_pad_get_bufferpool (space->srcpad);
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}
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return NULL;
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}
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static GstCaps *
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gst_ffmpegcsp_getcaps (GstPad *pad,
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GstCaps *caps)
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{
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GstFFMpegCsp *space;
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GstCaps *result;
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GstCaps *peercaps;
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GstCaps *ourcaps;
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space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
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/* we can do everything our peer can... */
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peercaps = gst_caps_copy (gst_pad_get_allowed_caps (space->srcpad));
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/* and our own template of course */
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ourcaps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
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/* merge them together, we prefer the peercaps first */
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result = gst_caps_prepend (ourcaps, peercaps);
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return result;
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}
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static GstPadLinkReturn
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gst_ffmpegcsp_srcconnect_func (GstPad *pad,
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GstCaps *caps,
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gboolean newcaps)
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{
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AVCodecContext *ctx;
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GstFFMpegCsp *space;
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GstCaps *peercaps;
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GstCaps *ourcaps;
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space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
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/* we cannot operate if we didn't get src caps */
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if (!(ourcaps = space->sinkcaps)) {
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if (newcaps) {
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gst_pad_recalc_allowed_caps (space->sinkpad);
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}
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return GST_PAD_LINK_DELAYED;
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}
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/* first see if we can do the format natively by filtering the peer caps
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* with our incomming caps */
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if ((peercaps = gst_caps_intersect (caps, ourcaps)) != NULL) {
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/* see if the peer likes it too, it should as the caps say so.. */
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if (gst_pad_try_set_caps (space->srcpad, peercaps) > 0) {
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space->from_pixfmt = space->to_pixfmt = -1;
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return GST_PAD_LINK_DONE;
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}
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}
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/* then see what the peer has that matches the size */
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peercaps = gst_caps_intersect (caps,
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gst_caps_append (
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GST_CAPS_NEW (
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"ffmpegcsp_filter",
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"video/x-raw-yuv",
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"width", GST_PROPS_INT (space->width),
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"height", GST_PROPS_INT (space->height),
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"framerate", GST_PROPS_FLOAT (space->fps)
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), GST_CAPS_NEW (
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"ffmpegcsp_filter",
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"video/x-raw-rgb",
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"width", GST_PROPS_INT (space->width),
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"height", GST_PROPS_INT (space->height),
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"framerate", GST_PROPS_FLOAT (space->fps)
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)));
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/* we are looping over the caps, so we have to get rid of the lists */
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peercaps = gst_caps_normalize (peercaps);
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/* loop over all possibilities and select the first one we can convert and
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* is accepted by the peer */
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ctx = avcodec_alloc_context ();
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while (peercaps) {
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ctx->width = space->width;
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ctx->height = space->height;
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ctx->pix_fmt = PIX_FMT_NB;
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gst_ffmpeg_caps_to_codectype (CODEC_TYPE_VIDEO, peercaps, ctx);
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if (ctx->pix_fmt != PIX_FMT_NB) {
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GstCaps *one = gst_caps_copy_1 (peercaps);
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if (gst_pad_try_set_caps (space->srcpad, one) > 0) {
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space->to_pixfmt = ctx->pix_fmt;
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gst_caps_unref (one);
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av_free (ctx);
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if (space->from_frame)
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av_free (space->from_frame);
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if (space->to_frame)
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av_free (space->to_frame);
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space->from_frame = avcodec_alloc_frame ();
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space->to_frame = avcodec_alloc_frame ();
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return GST_PAD_LINK_DONE;
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}
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gst_caps_unref (one);
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}
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peercaps = peercaps->next;
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}
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av_free (ctx);
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/* we disable ourself here */
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space->from_pixfmt = space->to_pixfmt = PIX_FMT_NB;
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return GST_PAD_LINK_REFUSED;
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}
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static GstPadLinkReturn
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gst_ffmpegcsp_sinkconnect (GstPad *pad,
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GstCaps *caps)
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{
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AVCodecContext *ctx;
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GstFFMpegCsp *space;
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GstPad *peer;
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space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps)) {
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return GST_PAD_LINK_DELAYED;
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}
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ctx = avcodec_alloc_context ();
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ctx->width = 0;
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ctx->height = 0;
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ctx->pix_fmt = PIX_FMT_NB;
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gst_ffmpeg_caps_to_codectype (CODEC_TYPE_VIDEO, caps, ctx);
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if (!ctx->width || !ctx->height || ctx->pix_fmt == PIX_FMT_NB) {
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return GST_PAD_LINK_REFUSED;
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}
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gst_caps_get_float (caps, "framerate", &space->fps);
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space->width = ctx->width;
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space->height = ctx->height;
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space->from_pixfmt = ctx->pix_fmt;
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av_free (ctx);
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GST_INFO ( "size: %dx%d", space->width, space->height);
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space->sinkcaps = caps;
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if ((peer = gst_pad_get_peer (pad)) != NULL) {
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GstPadLinkReturn ret;
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ret = gst_ffmpegcsp_srcconnect_func (pad,
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gst_pad_get_allowed_caps (space->srcpad),
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FALSE);
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if (ret <= 0) {
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space->sinkcaps = NULL;
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return ret;
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}
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return GST_PAD_LINK_DONE;
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}
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return GST_PAD_LINK_OK;
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}
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static GstPadLinkReturn
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gst_ffmpegcsp_srcconnect (GstPad *pad,
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GstCaps *caps)
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{
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return gst_ffmpegcsp_srcconnect_func (pad, caps, TRUE);
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}
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static GType
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gst_ffmpegcsp_get_type (void)
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{
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static GType ffmpegcsp_type = 0;
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if (!ffmpegcsp_type) {
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static const GTypeInfo ffmpegcsp_info = {
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sizeof (GstFFMpegCspClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_ffmpegcsp_class_init,
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NULL,
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NULL,
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sizeof (GstFFMpegCsp),
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0,
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(GInstanceInitFunc) gst_ffmpegcsp_init,
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};
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ffmpegcsp_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstFFMpegColorspace",
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&ffmpegcsp_info, 0);
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}
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return ffmpegcsp_type;
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}
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static void
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gst_ffmpegcsp_class_init (GstFFMpegCspClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass*) klass;
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gstelement_class = (GstElementClass*) klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_ffmpegcsp_set_property;
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gobject_class->get_property = gst_ffmpegcsp_get_property;
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gstelement_class->change_state = gst_ffmpegcsp_change_state;
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}
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static void
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gst_ffmpegcsp_init (GstFFMpegCsp *space)
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{
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space->sinkpad = gst_pad_new_from_template (sinktempl, "sink");
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gst_pad_set_link_function (space->sinkpad, gst_ffmpegcsp_sinkconnect);
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gst_pad_set_getcaps_function (space->sinkpad, gst_ffmpegcsp_getcaps);
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gst_pad_set_bufferpool_function (space->sinkpad, ffmpegcsp_get_bufferpool);
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gst_pad_set_chain_function (space->sinkpad,gst_ffmpegcsp_chain);
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gst_element_add_pad (GST_ELEMENT(space), space->sinkpad);
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space->srcpad = gst_pad_new_from_template (srctempl, "src");
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gst_element_add_pad (GST_ELEMENT (space), space->srcpad);
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gst_pad_set_link_function (space->srcpad, gst_ffmpegcsp_srcconnect);
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space->pool = NULL;
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space->from_pixfmt = space->to_pixfmt = PIX_FMT_NB;
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space->from_frame = space->to_frame = NULL;
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}
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static void
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gst_ffmpegcsp_chain (GstPad *pad,
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GstData *data)
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{
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GstBuffer *inbuf = GST_BUFFER (data);
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GstFFMpegCsp *space;
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GstBuffer *outbuf = NULL;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (inbuf != NULL);
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space = GST_FFMPEGCSP (gst_pad_get_parent (pad));
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g_return_if_fail (space != NULL);
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g_return_if_fail (GST_IS_FFMPEGCSP (space));
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if (space->from_pixfmt == PIX_FMT_NB ||
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space->to_pixfmt == PIX_FMT_NB) {
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gst_buffer_unref (inbuf);
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return;
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}
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if (space->from_pixfmt == space->to_pixfmt) {
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outbuf = inbuf;
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} else {
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if (space->pool) {
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outbuf = gst_buffer_new_from_pool (space->pool, 0, 0);
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}
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if (!outbuf) {
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guint size = avpicture_get_size (space->to_pixfmt,
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space->width,
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space->height);
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outbuf = gst_buffer_new_and_alloc (size);
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}
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/* convert */
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avpicture_fill ((AVPicture *) space->from_frame, GST_BUFFER_DATA (inbuf),
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space->from_pixfmt, space->width, space->height);
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avpicture_fill ((AVPicture *) space->to_frame, GST_BUFFER_DATA (outbuf),
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space->to_pixfmt, space->width, space->height);
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img_convert ((AVPicture *) space->to_frame, space->to_pixfmt,
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(AVPicture *) space->from_frame, space->from_pixfmt,
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space->width, space->height);
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
|
||||
|
||||
gst_buffer_unref (inbuf);
|
||||
}
|
||||
|
||||
gst_pad_push (space->srcpad, GST_DATA (outbuf));
|
||||
}
|
||||
|
||||
static GstElementStateReturn
|
||||
gst_ffmpegcsp_change_state (GstElement *element)
|
||||
{
|
||||
GstFFMpegCsp *space;
|
||||
|
||||
space = GST_FFMPEGCSP (element);
|
||||
|
||||
switch (GST_STATE_TRANSITION (element)) {
|
||||
case GST_STATE_PAUSED_TO_PLAYING:
|
||||
space->pool = gst_pad_get_bufferpool (space->srcpad);
|
||||
break;
|
||||
case GST_STATE_PLAYING_TO_PAUSED:
|
||||
space->pool = NULL;
|
||||
case GST_STATE_PAUSED_TO_READY:
|
||||
if (space->from_frame)
|
||||
av_free (space->from_frame);
|
||||
if (space->to_frame)
|
||||
av_free (space->to_frame);
|
||||
space->from_frame = NULL;
|
||||
space->to_frame = NULL;
|
||||
break;
|
||||
}
|
||||
|
||||
if (parent_class->change_state)
|
||||
return parent_class->change_state (element);
|
||||
|
||||
return GST_STATE_SUCCESS;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_ffmpegcsp_set_property (GObject *object,
|
||||
guint prop_id,
|
||||
const GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
GstFFMpegCsp *space;
|
||||
|
||||
/* it's not null if we got it, but it might not be ours */
|
||||
g_return_if_fail (GST_IS_FFMPEGCSP (object));
|
||||
space = GST_FFMPEGCSP (object);
|
||||
|
||||
switch (prop_id) {
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_ffmpegcsp_get_property (GObject *object,
|
||||
guint prop_id,
|
||||
GValue *value,
|
||||
GParamSpec *pspec)
|
||||
{
|
||||
GstFFMpegCsp *space;
|
||||
|
||||
/* it's not null if we got it, but it might not be ours */
|
||||
g_return_if_fail (GST_IS_FFMPEGCSP (object));
|
||||
space = GST_FFMPEGCSP (object);
|
||||
|
||||
switch (prop_id) {
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
gboolean
|
||||
gst_ffmpegcsp_register (GstPlugin *plugin)
|
||||
{
|
||||
GstElementFactory *factory;
|
||||
GstCaps *caps;
|
||||
|
||||
factory = gst_element_factory_new ("ffcolorspace", GST_TYPE_FFMPEGCSP,
|
||||
&ffmpegcsp_details);
|
||||
g_return_val_if_fail (factory != NULL, FALSE);
|
||||
|
||||
/* template caps */
|
||||
caps = gst_ffmpeg_codectype_to_caps (CODEC_TYPE_VIDEO, NULL);
|
||||
|
||||
/* build templates */
|
||||
srctempl = gst_pad_template_new ("src",
|
||||
GST_PAD_SRC,
|
||||
GST_PAD_ALWAYS,
|
||||
caps, NULL);
|
||||
gst_caps_ref (caps);
|
||||
sinktempl = gst_pad_template_new ("sink",
|
||||
GST_PAD_SINK,
|
||||
GST_PAD_ALWAYS,
|
||||
caps, NULL);
|
||||
|
||||
gst_element_factory_add_pad_template (factory, srctempl);
|
||||
gst_element_factory_add_pad_template (factory, sinktempl);
|
||||
|
||||
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
Loading…
Reference in a new issue