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2296 lines
69 KiB
C
2296 lines
69 KiB
C
/* Generic video mixer plugin
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* Copyright (C) 2004, 2008 Wim Taymans <wim@fluendo.com>
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* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-videomixer
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* @title: videomixer
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*
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* Videomixer can accept AYUV, ARGB and BGRA video streams. For each of the requested
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* sink pads it will compare the incoming geometry and framerate to define the
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* output parameters. Indeed output video frames will have the geometry of the
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* biggest incoming video stream and the framerate of the fastest incoming one.
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*
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* Videomixer will do colorspace conversion.
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*
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* Individual parameters for each input stream can be configured on the
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* videomixer pads.
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*
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* ## Sample pipelines
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* |[
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* gst-launch-1.0 \
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* videotestsrc pattern=1 ! \
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* video/x-raw,format=AYUV,framerate=\(fraction\)10/1,width=100,height=100 ! \
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* videobox border-alpha=0 top=-70 bottom=-70 right=-220 ! \
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* videomixer name=mix sink_0::alpha=0.7 sink_1::alpha=0.5 ! \
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* videoconvert ! xvimagesink \
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* videotestsrc ! \
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* video/x-raw,format=AYUV,framerate=\(fraction\)5/1,width=320,height=240 ! mix.
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* ]| A pipeline to demonstrate videomixer used together with videobox.
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* This should show a 320x240 pixels video test source with some transparency
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* showing the background checker pattern. Another video test source with just
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* the snow pattern of 100x100 pixels is overlaid on top of the first one on
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* the left vertically centered with a small transparency showing the first
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* video test source behind and the checker pattern under it. Note that the
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* framerate of the output video is 10 frames per second.
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* |[
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* gst-launch-1.0 videotestsrc pattern=1 ! \
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* video/x-raw, framerate=\(fraction\)10/1, width=100, height=100 ! \
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* videomixer name=mix ! videoconvert ! ximagesink \
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* videotestsrc ! \
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* video/x-raw, framerate=\(fraction\)5/1, width=320, height=240 ! mix.
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* ]| A pipeline to demonstrate bgra mixing. (This does not demonstrate alpha blending).
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* |[
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* gst-launch-1.0 videotestsrc pattern=1 ! \
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* video/x-raw,format =I420, framerate=\(fraction\)10/1, width=100, height=100 ! \
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* videomixer name=mix ! videoconvert ! ximagesink \
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* videotestsrc ! \
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* video/x-raw,format=I420, framerate=\(fraction\)5/1, width=320, height=240 ! mix.
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* ]| A pipeline to test I420
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* |[
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* gst-launch-1.0 videomixer name=mixer sink_1::alpha=0.5 sink_1::xpos=50 sink_1::ypos=50 ! \
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* videoconvert ! ximagesink \
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* videotestsrc pattern=snow timestamp-offset=3000000000 ! \
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* "video/x-raw,format=AYUV,width=640,height=480,framerate=(fraction)30/1" ! \
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* timeoverlay ! queue2 ! mixer. \
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* videotestsrc pattern=smpte ! \
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* "video/x-raw,format=AYUV,width=800,height=600,framerate=(fraction)10/1" ! \
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* timeoverlay ! queue2 ! mixer.
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* ]| A pipeline to demonstrate synchronized mixing (the second stream starts after 3 seconds)
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*
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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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#include <string.h>
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#include "videomixer2.h"
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#include "videomixer2pad.h"
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#ifdef DISABLE_ORC
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#define orc_memset memset
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#else
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#include <orc/orcfunctions.h>
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#endif
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GST_DEBUG_CATEGORY_STATIC (gst_videomixer2_debug);
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#define GST_CAT_DEFAULT gst_videomixer2_debug
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#define GST_VIDEO_MIXER2_GET_LOCK(mix) \
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(&GST_VIDEO_MIXER2(mix)->lock)
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#define GST_VIDEO_MIXER2_LOCK(mix) \
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(g_mutex_lock(GST_VIDEO_MIXER2_GET_LOCK (mix)))
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#define GST_VIDEO_MIXER2_UNLOCK(mix) \
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(g_mutex_unlock(GST_VIDEO_MIXER2_GET_LOCK (mix)))
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#define GST_VIDEO_MIXER2_GET_SETCAPS_LOCK(mix) \
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(&GST_VIDEO_MIXER2(mix)->setcaps_lock)
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#define GST_VIDEO_MIXER2_SETCAPS_LOCK(mix) \
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(g_mutex_lock(GST_VIDEO_MIXER2_GET_SETCAPS_LOCK (mix)))
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#define GST_VIDEO_MIXER2_SETCAPS_UNLOCK(mix) \
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(g_mutex_unlock(GST_VIDEO_MIXER2_GET_SETCAPS_LOCK (mix)))
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#define FORMATS " { AYUV, BGRA, ARGB, RGBA, ABGR, Y444, Y42B, YUY2, UYVY, "\
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" YVYU, I420, YV12, NV12, NV21, Y41B, RGB, BGR, xRGB, xBGR, "\
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" RGBx, BGRx } "
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (FORMATS))
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);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (FORMATS))
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);
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static void gst_videomixer2_child_proxy_init (gpointer g_iface,
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gpointer iface_data);
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static gboolean gst_videomixer2_push_sink_event (GstVideoMixer2 * mix,
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GstEvent * event);
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static void gst_videomixer2_release_pad (GstElement * element, GstPad * pad);
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static void gst_videomixer2_reset_qos (GstVideoMixer2 * mix);
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struct _GstVideoMixer2Collect
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{
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GstCollectData collect; /* we extend the CollectData */
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GstVideoMixer2Pad *mixpad;
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GstBuffer *queued; /* buffer for which we don't know the end time yet */
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GstVideoInfo queued_vinfo;
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GstBuffer *buffer; /* buffer that should be blended now */
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GstVideoInfo buffer_vinfo;
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GstClockTime start_time;
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GstClockTime end_time;
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};
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#define DEFAULT_PAD_ZORDER 0
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#define DEFAULT_PAD_XPOS 0
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#define DEFAULT_PAD_YPOS 0
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#define DEFAULT_PAD_ALPHA 1.0
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enum
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{
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PROP_PAD_0,
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PROP_PAD_ZORDER,
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PROP_PAD_XPOS,
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PROP_PAD_YPOS,
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PROP_PAD_ALPHA
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};
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G_DEFINE_TYPE (GstVideoMixer2Pad, gst_videomixer2_pad, GST_TYPE_PAD);
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static void
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gst_videomixer2_collect_free (GstCollectData * data)
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{
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GstVideoMixer2Collect *cdata = (GstVideoMixer2Collect *) data;
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gst_buffer_replace (&cdata->buffer, NULL);
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}
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static gboolean gst_videomixer2_src_setcaps (GstPad * pad, GstVideoMixer2 * mix,
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GstCaps * caps);
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static gboolean
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gst_videomixer2_update_src_caps (GstVideoMixer2 * mix)
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{
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GSList *l;
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gint best_width = -1, best_height = -1;
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gdouble best_fps = -1, cur_fps;
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gint best_fps_n = -1, best_fps_d = -1;
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gboolean ret = TRUE;
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GST_VIDEO_MIXER2_SETCAPS_LOCK (mix);
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GST_VIDEO_MIXER2_LOCK (mix);
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for (l = mix->sinkpads; l; l = l->next) {
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GstVideoMixer2Pad *mpad = l->data;
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gint this_width, this_height;
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gint fps_n, fps_d;
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gint width, height;
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fps_n = GST_VIDEO_INFO_FPS_N (&mpad->info);
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fps_d = GST_VIDEO_INFO_FPS_D (&mpad->info);
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width = GST_VIDEO_INFO_WIDTH (&mpad->info);
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height = GST_VIDEO_INFO_HEIGHT (&mpad->info);
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if (width == 0 || height == 0)
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continue;
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this_width = width + MAX (mpad->xpos, 0);
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this_height = height + MAX (mpad->ypos, 0);
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if (best_width < this_width)
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best_width = this_width;
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if (best_height < this_height)
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best_height = this_height;
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if (fps_d == 0)
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cur_fps = 0.0;
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else
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gst_util_fraction_to_double (fps_n, fps_d, &cur_fps);
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if (best_fps < cur_fps) {
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best_fps = cur_fps;
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best_fps_n = fps_n;
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best_fps_d = fps_d;
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}
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}
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if (best_fps_n <= 0 || best_fps_d <= 0 || best_fps == 0.0) {
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best_fps_n = 25;
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best_fps_d = 1;
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best_fps = 25.0;
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}
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if (best_width > 0 && best_height > 0 && best_fps > 0) {
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GstCaps *caps, *peercaps;
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GstStructure *s;
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GstVideoInfo info;
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if (GST_VIDEO_INFO_FPS_N (&mix->info) != best_fps_n ||
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GST_VIDEO_INFO_FPS_D (&mix->info) != best_fps_d) {
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if (mix->segment.position != -1) {
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mix->ts_offset = mix->segment.position - mix->segment.start;
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mix->nframes = 0;
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}
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}
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gst_video_info_init (&info);
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gst_video_info_set_format (&info, GST_VIDEO_INFO_FORMAT (&mix->info),
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best_width, best_height);
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info.fps_n = best_fps_n;
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info.fps_d = best_fps_d;
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info.par_n = GST_VIDEO_INFO_PAR_N (&mix->info);
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info.par_d = GST_VIDEO_INFO_PAR_D (&mix->info);
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caps = gst_video_info_to_caps (&info);
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peercaps = gst_pad_peer_query_caps (mix->srcpad, NULL);
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if (peercaps && !gst_caps_can_intersect (peercaps, caps)) {
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GstCaps *tmp;
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s = gst_caps_get_structure (caps, 0);
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gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height",
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GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE,
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0, 1, G_MAXINT, 1, NULL);
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tmp = gst_caps_intersect (caps, peercaps);
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gst_caps_unref (caps);
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gst_caps_unref (peercaps);
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peercaps = NULL;
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caps = tmp;
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if (gst_caps_is_empty (caps)) {
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GST_DEBUG_OBJECT (mix, "empty caps");
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ret = FALSE;
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GST_VIDEO_MIXER2_UNLOCK (mix);
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goto done;
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}
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caps = gst_caps_truncate (caps);
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s = gst_caps_get_structure (caps, 0);
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gst_structure_fixate_field_nearest_int (s, "width", best_width);
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gst_structure_fixate_field_nearest_int (s, "height", best_height);
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gst_structure_fixate_field_nearest_fraction (s, "framerate", best_fps_n,
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best_fps_d);
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gst_structure_get_int (s, "width", &info.width);
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gst_structure_get_int (s, "height", &info.height);
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gst_structure_get_fraction (s, "fraction", &info.fps_n, &info.fps_d);
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}
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if (peercaps)
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gst_caps_unref (peercaps);
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gst_caps_unref (caps);
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caps = gst_video_info_to_caps (&info);
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GST_VIDEO_MIXER2_UNLOCK (mix);
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ret = gst_videomixer2_src_setcaps (mix->srcpad, mix, caps);
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gst_caps_unref (caps);
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} else {
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GST_VIDEO_MIXER2_UNLOCK (mix);
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}
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done:
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GST_VIDEO_MIXER2_SETCAPS_UNLOCK (mix);
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return ret;
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}
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static gboolean
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gst_videomixer2_update_converters (GstVideoMixer2 * mix)
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{
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GSList *tmp;
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GstVideoFormat best_format;
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GstVideoInfo best_info;
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GstVideoMixer2Pad *pad;
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gboolean need_alpha = FALSE;
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gboolean at_least_one_alpha = FALSE;
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GstCaps *downstream_caps;
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GstCaps *possible_caps;
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gchar *best_colorimetry;
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const gchar *best_chroma;
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GHashTable *formats_table;
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gint best_format_number = 0;
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best_format = GST_VIDEO_FORMAT_UNKNOWN;
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gst_video_info_init (&best_info);
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downstream_caps = gst_pad_get_allowed_caps (mix->srcpad);
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if (!downstream_caps || gst_caps_is_empty (downstream_caps)) {
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if (downstream_caps)
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gst_caps_unref (downstream_caps);
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return FALSE;
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}
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formats_table = g_hash_table_new (g_direct_hash, g_direct_equal);
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/* first find new preferred format */
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for (tmp = mix->sinkpads; tmp; tmp = tmp->next) {
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GstStructure *s;
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gint format_number;
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pad = tmp->data;
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if (!pad->info.finfo)
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continue;
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if (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)
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at_least_one_alpha = TRUE;
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/* If we want alpha, disregard all the other formats */
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if (need_alpha && !(pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA))
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continue;
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/* This can happen if we release a pad and another pad hasn't been negotiated yet */
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if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN)
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continue;
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possible_caps = gst_video_info_to_caps (&pad->info);
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s = gst_caps_get_structure (possible_caps, 0);
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gst_structure_remove_fields (s, "width", "height", "framerate",
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"pixel-aspect-ratio", "interlace-mode", NULL);
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/* Can downstream accept this format ? */
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if (!gst_caps_can_intersect (downstream_caps, possible_caps)) {
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gst_caps_unref (possible_caps);
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continue;
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}
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gst_caps_unref (possible_caps);
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format_number =
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GPOINTER_TO_INT (g_hash_table_lookup (formats_table,
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GINT_TO_POINTER (GST_VIDEO_INFO_FORMAT (&pad->info))));
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format_number += 1;
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g_hash_table_replace (formats_table,
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GINT_TO_POINTER (GST_VIDEO_INFO_FORMAT (&pad->info)),
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GINT_TO_POINTER (format_number));
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/* If that pad is the first with alpha, set it as the new best format */
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if (!need_alpha && (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) {
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need_alpha = TRUE;
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best_format = GST_VIDEO_INFO_FORMAT (&pad->info);
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best_info = pad->info;
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best_format_number = format_number;
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} else if (format_number > best_format_number) {
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best_format = GST_VIDEO_INFO_FORMAT (&pad->info);
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best_info = pad->info;
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best_format_number = format_number;
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}
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}
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g_hash_table_unref (formats_table);
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if (best_format == GST_VIDEO_FORMAT_UNKNOWN) {
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downstream_caps = gst_caps_fixate (downstream_caps);
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gst_video_info_from_caps (&best_info, downstream_caps);
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best_format = GST_VIDEO_INFO_FORMAT (&best_info);
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}
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gst_caps_unref (downstream_caps);
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if (at_least_one_alpha
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&& !(best_info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) {
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GST_ELEMENT_ERROR (mix, CORE, NEGOTIATION,
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("At least one of the input pads contains alpha, but downstream can't support alpha."),
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("Either convert your inputs to not contain alpha or add a videoconvert after the mixer"));
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return FALSE;
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}
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best_colorimetry = gst_video_colorimetry_to_string (&(best_info.colorimetry));
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best_chroma = gst_video_chroma_to_string (best_info.chroma_site);
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if (GST_VIDEO_INFO_FPS_N (&mix->info) != GST_VIDEO_INFO_FPS_N (&best_info) ||
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GST_VIDEO_INFO_FPS_D (&mix->info) != GST_VIDEO_INFO_FPS_D (&best_info)) {
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if (mix->segment.position != -1) {
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mix->ts_offset = mix->segment.position - mix->segment.start;
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mix->nframes = 0;
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} else {
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mix->ts_offset += gst_util_uint64_scale_round (mix->nframes,
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GST_SECOND * GST_VIDEO_INFO_FPS_D (&mix->info),
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GST_VIDEO_INFO_FPS_N (&mix->info));
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mix->nframes = 0;
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}
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}
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mix->info = best_info;
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GST_DEBUG_OBJECT (mix,
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"The output format will now be : %d with colorimetry : %s and chroma : %s",
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best_format, best_colorimetry, best_chroma);
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/* Then browse the sinks once more, setting or unsetting conversion if needed */
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for (tmp = mix->sinkpads; tmp; tmp = tmp->next) {
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gchar *colorimetry;
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const gchar *chroma;
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pad = tmp->data;
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if (!pad->info.finfo)
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continue;
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if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN)
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continue;
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if (pad->convert)
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|
gst_video_converter_free (pad->convert);
|
|
|
|
pad->convert = NULL;
|
|
|
|
colorimetry = gst_video_colorimetry_to_string (&(pad->info.colorimetry));
|
|
chroma = gst_video_chroma_to_string (pad->info.chroma_site);
|
|
|
|
if (best_format != GST_VIDEO_INFO_FORMAT (&pad->info) ||
|
|
g_strcmp0 (colorimetry, best_colorimetry) ||
|
|
g_strcmp0 (chroma, best_chroma)) {
|
|
GstVideoInfo tmp_info = pad->info;
|
|
tmp_info.finfo = best_info.finfo;
|
|
tmp_info.chroma_site = best_info.chroma_site;
|
|
tmp_info.colorimetry = best_info.colorimetry;
|
|
|
|
GST_DEBUG_OBJECT (pad, "This pad will be converted from %d to %d",
|
|
GST_VIDEO_INFO_FORMAT (&pad->info),
|
|
GST_VIDEO_INFO_FORMAT (&best_info));
|
|
pad->convert = gst_video_converter_new (&pad->info, &tmp_info, NULL);
|
|
pad->need_conversion_update = TRUE;
|
|
if (!pad->convert) {
|
|
g_free (colorimetry);
|
|
g_free (best_colorimetry);
|
|
GST_WARNING ("No path found for conversion");
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (pad, "This pad will not need conversion");
|
|
}
|
|
g_free (colorimetry);
|
|
}
|
|
|
|
g_free (best_colorimetry);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_pad_sink_setcaps (GstPad * pad, GstObject * parent,
|
|
GstCaps * caps)
|
|
{
|
|
GstVideoMixer2 *mix;
|
|
GstVideoMixer2Pad *mixpad;
|
|
GstVideoInfo info;
|
|
gboolean ret = FALSE;
|
|
|
|
GST_INFO_OBJECT (pad, "Setting caps %" GST_PTR_FORMAT, caps);
|
|
|
|
mix = GST_VIDEO_MIXER2 (parent);
|
|
mixpad = GST_VIDEO_MIXER2_PAD (pad);
|
|
|
|
if (!gst_video_info_from_caps (&info, caps)) {
|
|
GST_ERROR_OBJECT (pad, "Failed to parse caps");
|
|
goto beach;
|
|
}
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
if (GST_VIDEO_INFO_FORMAT (&mix->info) != GST_VIDEO_FORMAT_UNKNOWN) {
|
|
if (GST_VIDEO_INFO_PAR_N (&mix->info) != GST_VIDEO_INFO_PAR_N (&info)
|
|
|| GST_VIDEO_INFO_PAR_D (&mix->info) != GST_VIDEO_INFO_PAR_D (&info) ||
|
|
GST_VIDEO_INFO_INTERLACE_MODE (&mix->info) !=
|
|
GST_VIDEO_INFO_INTERLACE_MODE (&info)) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"got input caps %" GST_PTR_FORMAT ", but " "current caps are %"
|
|
GST_PTR_FORMAT, caps, mix->current_caps);
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
mixpad->info = info;
|
|
|
|
GST_COLLECT_PADS_STREAM_LOCK (mix->collect);
|
|
|
|
ret = gst_videomixer2_update_converters (mix);
|
|
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
if (ret)
|
|
ret = gst_videomixer2_update_src_caps (mix);
|
|
GST_COLLECT_PADS_STREAM_UNLOCK (mix->collect);
|
|
|
|
beach:
|
|
return ret;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_videomixer2_pad_sink_getcaps (GstPad * pad, GstVideoMixer2 * mix,
|
|
GstCaps * filter)
|
|
{
|
|
GstCaps *srccaps;
|
|
GstCaps *template_caps;
|
|
GstCaps *filtered_caps;
|
|
GstCaps *returned_caps;
|
|
GstStructure *s;
|
|
gboolean had_current_caps = TRUE;
|
|
gint i, n;
|
|
|
|
template_caps = gst_pad_get_pad_template_caps (GST_PAD (mix->srcpad));
|
|
|
|
srccaps = gst_pad_get_current_caps (GST_PAD (mix->srcpad));
|
|
if (srccaps == NULL) {
|
|
had_current_caps = FALSE;
|
|
srccaps = template_caps;
|
|
}
|
|
|
|
srccaps = gst_caps_make_writable (srccaps);
|
|
|
|
n = gst_caps_get_size (srccaps);
|
|
for (i = 0; i < n; i++) {
|
|
s = gst_caps_get_structure (srccaps, i);
|
|
gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
|
|
if (!gst_structure_has_field (s, "pixel-aspect-ratio"))
|
|
gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
|
|
NULL);
|
|
|
|
gst_structure_remove_fields (s, "colorimetry", "chroma-site", "format",
|
|
NULL);
|
|
}
|
|
|
|
filtered_caps = srccaps;
|
|
if (filter)
|
|
filtered_caps = gst_caps_intersect (srccaps, filter);
|
|
returned_caps = gst_caps_intersect (filtered_caps, template_caps);
|
|
|
|
gst_caps_unref (srccaps);
|
|
if (filter)
|
|
gst_caps_unref (filtered_caps);
|
|
if (had_current_caps)
|
|
gst_caps_unref (template_caps);
|
|
|
|
return returned_caps;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_pad_sink_acceptcaps (GstPad * pad, GstVideoMixer2 * mix,
|
|
GstCaps * caps)
|
|
{
|
|
gboolean ret;
|
|
GstCaps *modified_caps;
|
|
GstCaps *accepted_caps;
|
|
GstCaps *template_caps;
|
|
gboolean had_current_caps = TRUE;
|
|
gint i, n;
|
|
GstStructure *s;
|
|
|
|
GST_DEBUG_OBJECT (pad, "%" GST_PTR_FORMAT, caps);
|
|
|
|
accepted_caps = gst_pad_get_current_caps (GST_PAD (mix->srcpad));
|
|
|
|
template_caps = gst_pad_get_pad_template_caps (GST_PAD (mix->srcpad));
|
|
|
|
if (accepted_caps == NULL) {
|
|
accepted_caps = template_caps;
|
|
had_current_caps = FALSE;
|
|
}
|
|
|
|
accepted_caps = gst_caps_make_writable (accepted_caps);
|
|
|
|
GST_LOG_OBJECT (pad, "src caps %" GST_PTR_FORMAT, accepted_caps);
|
|
|
|
n = gst_caps_get_size (accepted_caps);
|
|
for (i = 0; i < n; i++) {
|
|
s = gst_caps_get_structure (accepted_caps, i);
|
|
gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
|
|
if (!gst_structure_has_field (s, "pixel-aspect-ratio"))
|
|
gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
|
|
NULL);
|
|
|
|
gst_structure_remove_fields (s, "colorimetry", "chroma-site", "format",
|
|
NULL);
|
|
}
|
|
|
|
modified_caps = gst_caps_intersect (accepted_caps, template_caps);
|
|
|
|
ret = gst_caps_can_intersect (caps, accepted_caps);
|
|
GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
|
|
(ret ? "" : "not "), caps);
|
|
GST_DEBUG_OBJECT (pad, "acceptable caps are %" GST_PTR_FORMAT, accepted_caps);
|
|
gst_caps_unref (accepted_caps);
|
|
gst_caps_unref (modified_caps);
|
|
if (had_current_caps)
|
|
gst_caps_unref (template_caps);
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_sink_query (GstCollectPads * pads, GstCollectData * cdata,
|
|
GstQuery * query, GstVideoMixer2 * mix)
|
|
{
|
|
GstVideoMixer2Pad *pad = GST_VIDEO_MIXER2_PAD (cdata->pad);
|
|
gboolean ret = FALSE;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GstCaps *filter, *caps;
|
|
|
|
gst_query_parse_caps (query, &filter);
|
|
caps = gst_videomixer2_pad_sink_getcaps (GST_PAD (pad), mix, filter);
|
|
gst_query_set_caps_result (query, caps);
|
|
gst_caps_unref (caps);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GST_QUERY_ACCEPT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
gst_query_parse_accept_caps (query, &caps);
|
|
ret = gst_videomixer2_pad_sink_acceptcaps (GST_PAD (pad), mix, caps);
|
|
gst_query_set_accept_caps_result (query, ret);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_collect_pads_query_default (pads, cdata, query, FALSE);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_pad_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstVideoMixer2Pad *pad = GST_VIDEO_MIXER2_PAD (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PAD_ZORDER:
|
|
g_value_set_uint (value, pad->zorder);
|
|
break;
|
|
case PROP_PAD_XPOS:
|
|
g_value_set_int (value, pad->xpos);
|
|
break;
|
|
case PROP_PAD_YPOS:
|
|
g_value_set_int (value, pad->ypos);
|
|
break;
|
|
case PROP_PAD_ALPHA:
|
|
g_value_set_double (value, pad->alpha);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
pad_zorder_compare (const GstVideoMixer2Pad * pad1,
|
|
const GstVideoMixer2Pad * pad2)
|
|
{
|
|
return pad1->zorder - pad2->zorder;
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_pad_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstVideoMixer2Pad *pad = GST_VIDEO_MIXER2_PAD (object);
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (gst_pad_get_parent (GST_PAD (pad)));
|
|
|
|
switch (prop_id) {
|
|
case PROP_PAD_ZORDER:
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
pad->zorder = g_value_get_uint (value);
|
|
|
|
mix->sinkpads = g_slist_sort (mix->sinkpads,
|
|
(GCompareFunc) pad_zorder_compare);
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
break;
|
|
case PROP_PAD_XPOS:
|
|
pad->xpos = g_value_get_int (value);
|
|
break;
|
|
case PROP_PAD_YPOS:
|
|
pad->ypos = g_value_get_int (value);
|
|
break;
|
|
case PROP_PAD_ALPHA:
|
|
pad->alpha = g_value_get_double (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
gst_object_unref (mix);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_pad_class_init (GstVideoMixer2PadClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
|
|
gobject_class->set_property = gst_videomixer2_pad_set_property;
|
|
gobject_class->get_property = gst_videomixer2_pad_get_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_PAD_ZORDER,
|
|
g_param_spec_uint ("zorder", "Z-Order", "Z Order of the picture",
|
|
0, 10000, DEFAULT_PAD_ZORDER,
|
|
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_PAD_XPOS,
|
|
g_param_spec_int ("xpos", "X Position", "X Position of the picture",
|
|
G_MININT, G_MAXINT, DEFAULT_PAD_XPOS,
|
|
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_PAD_YPOS,
|
|
g_param_spec_int ("ypos", "Y Position", "Y Position of the picture",
|
|
G_MININT, G_MAXINT, DEFAULT_PAD_YPOS,
|
|
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_PAD_ALPHA,
|
|
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
|
|
DEFAULT_PAD_ALPHA,
|
|
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_pad_init (GstVideoMixer2Pad * mixerpad)
|
|
{
|
|
mixerpad->zorder = DEFAULT_PAD_ZORDER;
|
|
mixerpad->xpos = DEFAULT_PAD_XPOS;
|
|
mixerpad->ypos = DEFAULT_PAD_YPOS;
|
|
mixerpad->alpha = DEFAULT_PAD_ALPHA;
|
|
mixerpad->convert = NULL;
|
|
mixerpad->need_conversion_update = FALSE;
|
|
}
|
|
|
|
/* GstVideoMixer2 */
|
|
#define DEFAULT_BACKGROUND VIDEO_MIXER2_BACKGROUND_CHECKER
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_BACKGROUND
|
|
};
|
|
|
|
#define GST_TYPE_VIDEO_MIXER2_BACKGROUND (gst_videomixer2_background_get_type())
|
|
static GType
|
|
gst_videomixer2_background_get_type (void)
|
|
{
|
|
static GType video_mixer_background_type = 0;
|
|
|
|
static const GEnumValue video_mixer_background[] = {
|
|
{VIDEO_MIXER2_BACKGROUND_CHECKER, "Checker pattern", "checker"},
|
|
{VIDEO_MIXER2_BACKGROUND_BLACK, "Black", "black"},
|
|
{VIDEO_MIXER2_BACKGROUND_WHITE, "White", "white"},
|
|
{VIDEO_MIXER2_BACKGROUND_TRANSPARENT,
|
|
"Transparent Background to enable further mixing", "transparent"},
|
|
{0, NULL, NULL},
|
|
};
|
|
|
|
if (!video_mixer_background_type) {
|
|
video_mixer_background_type =
|
|
g_enum_register_static ("GstVideoMixer2Background",
|
|
video_mixer_background);
|
|
}
|
|
return video_mixer_background_type;
|
|
}
|
|
|
|
#define gst_videomixer2_parent_class parent_class
|
|
G_DEFINE_TYPE_WITH_CODE (GstVideoMixer2, gst_videomixer2, GST_TYPE_ELEMENT,
|
|
G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY,
|
|
gst_videomixer2_child_proxy_init));
|
|
|
|
static void
|
|
gst_videomixer2_update_qos (GstVideoMixer2 * mix, gdouble proportion,
|
|
GstClockTimeDiff diff, GstClockTime timestamp)
|
|
{
|
|
GST_DEBUG_OBJECT (mix,
|
|
"Updating QoS: proportion %lf, diff %" GST_STIME_FORMAT ", timestamp %"
|
|
GST_TIME_FORMAT, proportion, GST_STIME_ARGS (diff),
|
|
GST_TIME_ARGS (timestamp));
|
|
|
|
GST_OBJECT_LOCK (mix);
|
|
mix->proportion = proportion;
|
|
if (G_LIKELY (timestamp != GST_CLOCK_TIME_NONE)) {
|
|
if (!mix->live && G_UNLIKELY (diff > 0))
|
|
mix->earliest_time =
|
|
timestamp + 2 * diff + gst_util_uint64_scale_int_round (GST_SECOND,
|
|
GST_VIDEO_INFO_FPS_D (&mix->info), GST_VIDEO_INFO_FPS_N (&mix->info));
|
|
else
|
|
mix->earliest_time = timestamp + diff;
|
|
} else {
|
|
mix->earliest_time = GST_CLOCK_TIME_NONE;
|
|
}
|
|
GST_OBJECT_UNLOCK (mix);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_reset_qos (GstVideoMixer2 * mix)
|
|
{
|
|
gst_videomixer2_update_qos (mix, 0.5, 0, GST_CLOCK_TIME_NONE);
|
|
mix->qos_processed = mix->qos_dropped = 0;
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_read_qos (GstVideoMixer2 * mix, gdouble * proportion,
|
|
GstClockTime * time)
|
|
{
|
|
GST_OBJECT_LOCK (mix);
|
|
*proportion = mix->proportion;
|
|
*time = mix->earliest_time;
|
|
GST_OBJECT_UNLOCK (mix);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_reset (GstVideoMixer2 * mix)
|
|
{
|
|
GSList *l;
|
|
|
|
gst_video_info_init (&mix->info);
|
|
mix->ts_offset = 0;
|
|
mix->nframes = 0;
|
|
|
|
gst_segment_init (&mix->segment, GST_FORMAT_TIME);
|
|
mix->segment.position = -1;
|
|
|
|
gst_videomixer2_reset_qos (mix);
|
|
|
|
for (l = mix->sinkpads; l; l = l->next) {
|
|
GstVideoMixer2Pad *p = l->data;
|
|
GstVideoMixer2Collect *mixcol = p->mixcol;
|
|
|
|
gst_buffer_replace (&mixcol->buffer, NULL);
|
|
mixcol->start_time = -1;
|
|
mixcol->end_time = -1;
|
|
|
|
gst_video_info_init (&p->info);
|
|
}
|
|
|
|
mix->newseg_pending = TRUE;
|
|
}
|
|
|
|
/* 1 == OK
|
|
* 0 == need more data
|
|
* -1 == EOS
|
|
* -2 == error
|
|
*/
|
|
static gint
|
|
gst_videomixer2_fill_queues (GstVideoMixer2 * mix,
|
|
GstClockTime output_start_time, GstClockTime output_end_time)
|
|
{
|
|
GSList *l;
|
|
gboolean eos = TRUE;
|
|
gboolean need_more_data = FALSE;
|
|
|
|
for (l = mix->sinkpads; l; l = l->next) {
|
|
GstVideoMixer2Pad *pad = l->data;
|
|
GstVideoMixer2Collect *mixcol = pad->mixcol;
|
|
GstSegment *segment = &pad->mixcol->collect.segment;
|
|
GstBuffer *buf;
|
|
GstVideoInfo *vinfo;
|
|
|
|
buf = gst_collect_pads_peek (mix->collect, &mixcol->collect);
|
|
if (buf) {
|
|
GstClockTime start_time, end_time;
|
|
|
|
start_time = GST_BUFFER_TIMESTAMP (buf);
|
|
if (start_time == -1) {
|
|
gst_buffer_unref (buf);
|
|
GST_ERROR_OBJECT (pad, "Need timestamped buffers!");
|
|
return -2;
|
|
}
|
|
|
|
vinfo = &pad->info;
|
|
|
|
/* FIXME: Make all this work with negative rates */
|
|
|
|
if ((mixcol->buffer && start_time < GST_BUFFER_TIMESTAMP (mixcol->buffer))
|
|
|| (mixcol->queued
|
|
&& start_time < GST_BUFFER_TIMESTAMP (mixcol->queued))) {
|
|
GST_WARNING_OBJECT (pad, "Buffer from the past, dropping");
|
|
gst_buffer_unref (buf);
|
|
buf = gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
gst_buffer_unref (buf);
|
|
need_more_data = TRUE;
|
|
continue;
|
|
}
|
|
|
|
if (mixcol->queued) {
|
|
end_time = start_time - GST_BUFFER_TIMESTAMP (mixcol->queued);
|
|
start_time = GST_BUFFER_TIMESTAMP (mixcol->queued);
|
|
gst_buffer_unref (buf);
|
|
buf = gst_buffer_ref (mixcol->queued);
|
|
vinfo = &mixcol->queued_vinfo;
|
|
} else {
|
|
end_time = GST_BUFFER_DURATION (buf);
|
|
|
|
if (end_time == -1) {
|
|
mixcol->queued = buf;
|
|
buf = gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
gst_buffer_unref (buf);
|
|
mixcol->queued_vinfo = pad->info;
|
|
need_more_data = TRUE;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
g_assert (start_time != -1 && end_time != -1);
|
|
end_time += start_time; /* convert from duration to position */
|
|
|
|
/* Check if it's inside the segment */
|
|
if (start_time >= segment->stop || end_time < segment->start) {
|
|
GST_DEBUG_OBJECT (pad, "Buffer outside the segment");
|
|
|
|
if (buf == mixcol->queued) {
|
|
gst_buffer_unref (buf);
|
|
gst_buffer_replace (&mixcol->queued, NULL);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
buf = gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
need_more_data = TRUE;
|
|
continue;
|
|
}
|
|
|
|
/* Clip to segment and convert to running time */
|
|
start_time = MAX (start_time, segment->start);
|
|
if (segment->stop != -1)
|
|
end_time = MIN (end_time, segment->stop);
|
|
start_time =
|
|
gst_segment_to_running_time (segment, GST_FORMAT_TIME, start_time);
|
|
end_time =
|
|
gst_segment_to_running_time (segment, GST_FORMAT_TIME, end_time);
|
|
g_assert (start_time != -1 && end_time != -1);
|
|
|
|
/* Convert to the output segment rate */
|
|
if (ABS (mix->segment.rate) != 1.0) {
|
|
start_time *= ABS (mix->segment.rate);
|
|
end_time *= ABS (mix->segment.rate);
|
|
}
|
|
|
|
if (mixcol->end_time != -1 && mixcol->end_time > end_time) {
|
|
GST_DEBUG_OBJECT (pad, "Buffer from the past, dropping");
|
|
if (buf == mixcol->queued) {
|
|
gst_buffer_unref (buf);
|
|
gst_buffer_replace (&mixcol->queued, NULL);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
buf = gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
need_more_data = TRUE;
|
|
continue;
|
|
}
|
|
|
|
if (end_time >= output_start_time && start_time < output_end_time) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Taking new buffer with start time %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (start_time));
|
|
gst_buffer_replace (&mixcol->buffer, buf);
|
|
mixcol->buffer_vinfo = *vinfo;
|
|
mixcol->start_time = start_time;
|
|
mixcol->end_time = end_time;
|
|
|
|
if (buf == mixcol->queued) {
|
|
gst_buffer_unref (buf);
|
|
gst_buffer_replace (&mixcol->queued, NULL);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
buf = gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
gst_buffer_unref (buf);
|
|
}
|
|
eos = FALSE;
|
|
} else if (start_time >= output_end_time) {
|
|
GST_DEBUG_OBJECT (pad, "Keeping buffer until %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (start_time));
|
|
gst_buffer_unref (buf);
|
|
eos = FALSE;
|
|
} else {
|
|
GST_DEBUG_OBJECT (pad, "Too old buffer -- dropping");
|
|
if (buf == mixcol->queued) {
|
|
gst_buffer_unref (buf);
|
|
gst_buffer_replace (&mixcol->queued, NULL);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
buf = gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
need_more_data = TRUE;
|
|
continue;
|
|
}
|
|
} else {
|
|
if (mixcol->end_time != -1) {
|
|
if (mixcol->end_time <= output_start_time) {
|
|
gst_buffer_replace (&mixcol->buffer, NULL);
|
|
mixcol->start_time = mixcol->end_time = -1;
|
|
if (!GST_COLLECT_PADS_STATE_IS_SET (mixcol,
|
|
GST_COLLECT_PADS_STATE_EOS))
|
|
need_more_data = TRUE;
|
|
} else if (!GST_COLLECT_PADS_STATE_IS_SET (mixcol,
|
|
GST_COLLECT_PADS_STATE_EOS)) {
|
|
eos = FALSE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (need_more_data)
|
|
return 0;
|
|
if (eos)
|
|
return -1;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_videomixer2_blend_buffers (GstVideoMixer2 * mix,
|
|
GstClockTime output_start_time, GstClockTime output_end_time,
|
|
GstBuffer ** outbuf)
|
|
{
|
|
GSList *l;
|
|
guint outsize;
|
|
BlendFunction composite;
|
|
GstVideoFrame outframe;
|
|
static GstAllocationParams params = { 0, 15, 0, 0, };
|
|
|
|
outsize = GST_VIDEO_INFO_SIZE (&mix->info);
|
|
|
|
*outbuf = gst_buffer_new_allocate (NULL, outsize, ¶ms);
|
|
GST_BUFFER_TIMESTAMP (*outbuf) = output_start_time;
|
|
GST_BUFFER_DURATION (*outbuf) = output_end_time - output_start_time;
|
|
|
|
gst_video_frame_map (&outframe, &mix->info, *outbuf, GST_MAP_READWRITE);
|
|
|
|
/* default to blending */
|
|
composite = mix->blend;
|
|
switch (mix->background) {
|
|
case VIDEO_MIXER2_BACKGROUND_CHECKER:
|
|
mix->fill_checker (&outframe);
|
|
break;
|
|
case VIDEO_MIXER2_BACKGROUND_BLACK:
|
|
mix->fill_color (&outframe, 16, 128, 128);
|
|
break;
|
|
case VIDEO_MIXER2_BACKGROUND_WHITE:
|
|
mix->fill_color (&outframe, 240, 128, 128);
|
|
break;
|
|
case VIDEO_MIXER2_BACKGROUND_TRANSPARENT:
|
|
{
|
|
guint i, plane, num_planes, height;
|
|
|
|
num_planes = GST_VIDEO_FRAME_N_PLANES (&outframe);
|
|
for (plane = 0; plane < num_planes; ++plane) {
|
|
guint8 *pdata;
|
|
gsize rowsize, plane_stride;
|
|
|
|
pdata = GST_VIDEO_FRAME_PLANE_DATA (&outframe, plane);
|
|
plane_stride = GST_VIDEO_FRAME_PLANE_STRIDE (&outframe, plane);
|
|
rowsize = GST_VIDEO_FRAME_COMP_WIDTH (&outframe, plane)
|
|
* GST_VIDEO_FRAME_COMP_PSTRIDE (&outframe, plane);
|
|
height = GST_VIDEO_FRAME_COMP_HEIGHT (&outframe, plane);
|
|
for (i = 0; i < height; ++i) {
|
|
memset (pdata, 0, rowsize);
|
|
pdata += plane_stride;
|
|
}
|
|
}
|
|
|
|
/* use overlay to keep background transparent */
|
|
composite = mix->overlay;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (l = mix->sinkpads; l; l = l->next) {
|
|
GstVideoMixer2Pad *pad = l->data;
|
|
GstVideoMixer2Collect *mixcol = pad->mixcol;
|
|
|
|
if (mixcol->buffer != NULL) {
|
|
GstClockTime timestamp;
|
|
gint64 stream_time;
|
|
GstSegment *seg;
|
|
GstVideoFrame converted_frame;
|
|
GstBuffer *converted_buf = NULL;
|
|
GstVideoFrame frame;
|
|
|
|
seg = &mixcol->collect.segment;
|
|
|
|
timestamp = GST_BUFFER_TIMESTAMP (mixcol->buffer);
|
|
|
|
stream_time =
|
|
gst_segment_to_stream_time (seg, GST_FORMAT_TIME, timestamp);
|
|
|
|
/* sync object properties on stream time */
|
|
if (GST_CLOCK_TIME_IS_VALID (stream_time))
|
|
gst_object_sync_values (GST_OBJECT (pad), stream_time);
|
|
|
|
gst_video_frame_map (&frame, &mixcol->buffer_vinfo, mixcol->buffer,
|
|
GST_MAP_READ);
|
|
|
|
if (pad->convert) {
|
|
gint converted_size;
|
|
|
|
/* We wait until here to set the conversion infos, in case mix->info changed */
|
|
if (pad->need_conversion_update) {
|
|
pad->conversion_info = mix->info;
|
|
gst_video_info_set_format (&(pad->conversion_info),
|
|
GST_VIDEO_INFO_FORMAT (&mix->info), pad->info.width,
|
|
pad->info.height);
|
|
pad->need_conversion_update = FALSE;
|
|
}
|
|
|
|
converted_size = pad->conversion_info.size;
|
|
converted_size = converted_size > outsize ? converted_size : outsize;
|
|
converted_buf = gst_buffer_new_allocate (NULL, converted_size, ¶ms);
|
|
|
|
gst_video_frame_map (&converted_frame, &(pad->conversion_info),
|
|
converted_buf, GST_MAP_READWRITE);
|
|
gst_video_converter_frame (pad->convert, &frame, &converted_frame);
|
|
gst_video_frame_unmap (&frame);
|
|
} else {
|
|
converted_frame = frame;
|
|
}
|
|
|
|
composite (&converted_frame, pad->xpos, pad->ypos, pad->alpha, &outframe);
|
|
|
|
if (pad->convert)
|
|
gst_buffer_unref (converted_buf);
|
|
|
|
gst_video_frame_unmap (&converted_frame);
|
|
}
|
|
}
|
|
gst_video_frame_unmap (&outframe);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
/* Perform qos calculations before processing the next frame. Returns TRUE if
|
|
* the frame should be processed, FALSE if the frame can be dropped entirely */
|
|
static gint64
|
|
gst_videomixer2_do_qos (GstVideoMixer2 * mix, GstClockTime timestamp)
|
|
{
|
|
GstClockTime qostime, earliest_time;
|
|
gdouble proportion;
|
|
gint64 jitter;
|
|
|
|
/* no timestamp, can't do QoS => process frame */
|
|
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp))) {
|
|
GST_LOG_OBJECT (mix, "invalid timestamp, can't do QoS, process frame");
|
|
return -1;
|
|
}
|
|
|
|
/* get latest QoS observation values */
|
|
gst_videomixer2_read_qos (mix, &proportion, &earliest_time);
|
|
|
|
/* skip qos if we have no observation (yet) => process frame */
|
|
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (earliest_time))) {
|
|
GST_LOG_OBJECT (mix, "no observation yet, process frame");
|
|
return -1;
|
|
}
|
|
|
|
/* qos is done on running time */
|
|
qostime =
|
|
gst_segment_to_running_time (&mix->segment, GST_FORMAT_TIME, timestamp);
|
|
|
|
/* see how our next timestamp relates to the latest qos timestamp */
|
|
GST_LOG_OBJECT (mix, "qostime %" GST_TIME_FORMAT ", earliest %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (qostime), GST_TIME_ARGS (earliest_time));
|
|
|
|
jitter = GST_CLOCK_DIFF (qostime, earliest_time);
|
|
if (qostime != GST_CLOCK_TIME_NONE && jitter > 0) {
|
|
GST_DEBUG_OBJECT (mix, "we are late, drop frame");
|
|
return jitter;
|
|
}
|
|
|
|
GST_LOG_OBJECT (mix, "process frame");
|
|
return jitter;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_videomixer2_collected (GstCollectPads * pads, GstVideoMixer2 * mix)
|
|
{
|
|
GstFlowReturn ret;
|
|
GstClockTime output_start_time, output_end_time;
|
|
GstBuffer *outbuf = NULL;
|
|
gint res;
|
|
gint64 jitter;
|
|
|
|
/* If we're not negotiated yet... */
|
|
if (GST_VIDEO_INFO_FORMAT (&mix->info) == GST_VIDEO_FORMAT_UNKNOWN)
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
|
|
if (mix->send_stream_start) {
|
|
gchar s_id[32];
|
|
|
|
/* stream-start (FIXME: create id based on input ids) */
|
|
g_snprintf (s_id, sizeof (s_id), "mix-%08x", g_random_int ());
|
|
if (!gst_pad_push_event (mix->srcpad, gst_event_new_stream_start (s_id))) {
|
|
GST_WARNING_OBJECT (mix->srcpad, "Sending stream start event failed");
|
|
}
|
|
mix->send_stream_start = FALSE;
|
|
}
|
|
|
|
if (gst_pad_check_reconfigure (mix->srcpad))
|
|
gst_videomixer2_update_src_caps (mix);
|
|
|
|
if (mix->send_caps) {
|
|
if (!gst_pad_push_event (mix->srcpad,
|
|
gst_event_new_caps (mix->current_caps))) {
|
|
GST_WARNING_OBJECT (mix->srcpad, "Sending caps event failed");
|
|
}
|
|
mix->send_caps = FALSE;
|
|
}
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
|
|
if (mix->newseg_pending) {
|
|
GST_DEBUG_OBJECT (mix, "Sending NEWSEGMENT event");
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
if (!gst_pad_push_event (mix->srcpad,
|
|
gst_event_new_segment (&mix->segment))) {
|
|
ret = GST_FLOW_ERROR;
|
|
goto done_unlocked;
|
|
}
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
mix->newseg_pending = FALSE;
|
|
}
|
|
|
|
if (mix->segment.position == -1)
|
|
output_start_time = mix->segment.start;
|
|
else
|
|
output_start_time = mix->segment.position;
|
|
|
|
output_end_time =
|
|
mix->ts_offset + gst_util_uint64_scale_round (mix->nframes + 1,
|
|
GST_SECOND * GST_VIDEO_INFO_FPS_D (&mix->info),
|
|
GST_VIDEO_INFO_FPS_N (&mix->info)) + mix->segment.start;
|
|
|
|
if (output_end_time >= mix->segment.stop) {
|
|
GST_DEBUG_OBJECT (mix, "Segment done");
|
|
if (!(mix->segment.flags & GST_SEGMENT_FLAG_SEGMENT)) {
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
gst_pad_push_event (mix->srcpad, gst_event_new_eos ());
|
|
|
|
ret = GST_FLOW_EOS;
|
|
goto done_unlocked;
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (mix->pending_tags)) {
|
|
gst_pad_push_event (mix->srcpad, gst_event_new_tag (mix->pending_tags));
|
|
mix->pending_tags = NULL;
|
|
}
|
|
|
|
if (mix->segment.stop != -1)
|
|
output_end_time = MIN (output_end_time, mix->segment.stop);
|
|
|
|
res = gst_videomixer2_fill_queues (mix, output_start_time, output_end_time);
|
|
|
|
if (res == 0) {
|
|
GST_DEBUG_OBJECT (mix, "Need more data for decisions");
|
|
ret = GST_FLOW_OK;
|
|
goto done;
|
|
} else if (res == -1) {
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
GST_DEBUG_OBJECT (mix, "All sinkpads are EOS -- forwarding");
|
|
gst_pad_push_event (mix->srcpad, gst_event_new_eos ());
|
|
ret = GST_FLOW_EOS;
|
|
goto done_unlocked;
|
|
} else if (res == -2) {
|
|
GST_ERROR_OBJECT (mix, "Error collecting buffers");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
jitter = gst_videomixer2_do_qos (mix, output_start_time);
|
|
if (jitter <= 0) {
|
|
ret =
|
|
gst_videomixer2_blend_buffers (mix, output_start_time,
|
|
output_end_time, &outbuf);
|
|
mix->qos_processed++;
|
|
} else {
|
|
GstMessage *msg;
|
|
|
|
mix->qos_dropped++;
|
|
|
|
/* TODO: live */
|
|
msg =
|
|
gst_message_new_qos (GST_OBJECT_CAST (mix), FALSE,
|
|
gst_segment_to_running_time (&mix->segment, GST_FORMAT_TIME,
|
|
output_start_time), gst_segment_to_stream_time (&mix->segment,
|
|
GST_FORMAT_TIME, output_start_time), output_start_time,
|
|
output_end_time - output_start_time);
|
|
gst_message_set_qos_values (msg, jitter, mix->proportion, 1000000);
|
|
gst_message_set_qos_stats (msg, GST_FORMAT_BUFFERS, mix->qos_processed,
|
|
mix->qos_dropped);
|
|
gst_element_post_message (GST_ELEMENT_CAST (mix), msg);
|
|
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
mix->segment.position = output_end_time;
|
|
mix->nframes++;
|
|
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
if (outbuf) {
|
|
GST_LOG_OBJECT (mix,
|
|
"Pushing buffer with ts %" GST_TIME_FORMAT " and duration %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)));
|
|
ret = gst_pad_push (mix->srcpad, outbuf);
|
|
}
|
|
goto done_unlocked;
|
|
|
|
done:
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
|
|
done_unlocked:
|
|
return ret;
|
|
}
|
|
|
|
/* FIXME, the duration query should reflect how long you will produce
|
|
* data, that is the amount of stream time until you will emit EOS.
|
|
*
|
|
* For synchronized mixing this is always the max of all the durations
|
|
* of upstream since we emit EOS when all of them finished.
|
|
*
|
|
* We don't do synchronized mixing so this really depends on where the
|
|
* streams where punched in and what their relative offsets are against
|
|
* each other which we can get from the first timestamps we see.
|
|
*
|
|
* When we add a new stream (or remove a stream) the duration might
|
|
* also become invalid again and we need to post a new DURATION
|
|
* message to notify this fact to the parent.
|
|
* For now we take the max of all the upstream elements so the simple
|
|
* cases work at least somewhat.
|
|
*/
|
|
static gboolean
|
|
gst_videomixer2_query_duration (GstVideoMixer2 * mix, GstQuery * query)
|
|
{
|
|
GValue item = { 0 };
|
|
gint64 max;
|
|
gboolean res;
|
|
GstFormat format;
|
|
GstIterator *it;
|
|
gboolean done;
|
|
|
|
/* parse format */
|
|
gst_query_parse_duration (query, &format, NULL);
|
|
|
|
max = -1;
|
|
res = TRUE;
|
|
done = FALSE;
|
|
|
|
/* Take maximum of all durations */
|
|
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix));
|
|
while (!done) {
|
|
switch (gst_iterator_next (it, &item)) {
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_OK:
|
|
{
|
|
GstPad *pad;
|
|
gint64 duration;
|
|
|
|
pad = g_value_get_object (&item);
|
|
|
|
/* ask sink peer for duration */
|
|
res &= gst_pad_peer_query_duration (pad, format, &duration);
|
|
/* take max from all valid return values */
|
|
if (res) {
|
|
/* valid unknown length, stop searching */
|
|
if (duration == -1) {
|
|
max = duration;
|
|
done = TRUE;
|
|
}
|
|
/* else see if bigger than current max */
|
|
else if (duration > max)
|
|
max = duration;
|
|
}
|
|
g_value_reset (&item);
|
|
break;
|
|
}
|
|
case GST_ITERATOR_RESYNC:
|
|
max = -1;
|
|
res = TRUE;
|
|
gst_iterator_resync (it);
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
g_value_unset (&item);
|
|
gst_iterator_free (it);
|
|
|
|
if (res) {
|
|
/* and store the max */
|
|
GST_DEBUG_OBJECT (mix, "Total duration in format %s: %"
|
|
GST_TIME_FORMAT, gst_format_get_name (format), GST_TIME_ARGS (max));
|
|
gst_query_set_duration (query, format, max);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (parent);
|
|
gboolean res = FALSE;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
|
|
gst_query_parse_position (query, &format, NULL);
|
|
|
|
switch (format) {
|
|
case GST_FORMAT_TIME:
|
|
gst_query_set_position (query, format,
|
|
gst_segment_to_stream_time (&mix->segment, GST_FORMAT_TIME,
|
|
mix->segment.position));
|
|
res = TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:
|
|
res = gst_videomixer2_query_duration (mix, query);
|
|
break;
|
|
case GST_QUERY_CAPS:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
default:
|
|
/* FIXME, needs a custom query handler because we have multiple
|
|
* sinkpads */
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (parent);
|
|
gboolean result;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_QOS:
|
|
{
|
|
GstQOSType type;
|
|
GstClockTimeDiff diff;
|
|
GstClockTime timestamp;
|
|
gdouble proportion;
|
|
|
|
gst_event_parse_qos (event, &type, &proportion, &diff, ×tamp);
|
|
|
|
gst_videomixer2_update_qos (mix, proportion, diff, timestamp);
|
|
|
|
result = gst_videomixer2_push_sink_event (mix, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
gdouble rate;
|
|
GstFormat fmt;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
GSList *l;
|
|
gdouble abs_rate;
|
|
|
|
/* parse the seek parameters */
|
|
gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type,
|
|
&start, &stop_type, &stop);
|
|
|
|
if (rate <= 0.0) {
|
|
GST_ERROR_OBJECT (mix, "Negative rates not supported yet");
|
|
result = FALSE;
|
|
gst_event_unref (event);
|
|
break;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (mix, "Handling SEEK event");
|
|
|
|
abs_rate = ABS (rate);
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
for (l = mix->sinkpads; l; l = l->next) {
|
|
GstVideoMixer2Pad *p = l->data;
|
|
|
|
if (flags & GST_SEEK_FLAG_FLUSH) {
|
|
gst_buffer_replace (&p->mixcol->buffer, NULL);
|
|
p->mixcol->start_time = p->mixcol->end_time = -1;
|
|
continue;
|
|
}
|
|
|
|
/* Convert to the output segment rate */
|
|
if (ABS (mix->segment.rate) != abs_rate) {
|
|
if (ABS (mix->segment.rate) != 1.0 && p->mixcol->buffer) {
|
|
p->mixcol->start_time /= ABS (mix->segment.rate);
|
|
p->mixcol->end_time /= ABS (mix->segment.rate);
|
|
}
|
|
if (abs_rate != 1.0 && p->mixcol->buffer) {
|
|
p->mixcol->start_time *= abs_rate;
|
|
p->mixcol->end_time *= abs_rate;
|
|
}
|
|
}
|
|
}
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
|
|
gst_segment_do_seek (&mix->segment, rate, fmt, flags, start_type, start,
|
|
stop_type, stop, NULL);
|
|
mix->segment.position = -1;
|
|
mix->ts_offset = 0;
|
|
mix->nframes = 0;
|
|
mix->newseg_pending = TRUE;
|
|
|
|
gst_videomixer2_reset_qos (mix);
|
|
|
|
result = gst_collect_pads_src_event_default (mix->collect, pad, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_NAVIGATION:
|
|
/* navigation is rather pointless. */
|
|
result = FALSE;
|
|
gst_event_unref (event);
|
|
break;
|
|
default:
|
|
/* just forward the rest for now */
|
|
result = gst_videomixer2_push_sink_event (mix, event);
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_src_setcaps (GstPad * pad, GstVideoMixer2 * mix, GstCaps * caps)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstVideoInfo info;
|
|
|
|
GST_INFO_OBJECT (pad, "set src caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
if (!gst_video_info_from_caps (&info, caps))
|
|
goto done;
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
|
|
mix->blend = NULL;
|
|
mix->overlay = NULL;
|
|
mix->fill_checker = NULL;
|
|
mix->fill_color = NULL;
|
|
|
|
if (GST_VIDEO_INFO_FPS_N (&mix->info) != GST_VIDEO_INFO_FPS_N (&info) ||
|
|
GST_VIDEO_INFO_FPS_D (&mix->info) != GST_VIDEO_INFO_FPS_D (&info)) {
|
|
if (mix->segment.position != -1) {
|
|
mix->ts_offset = mix->segment.position - mix->segment.start;
|
|
mix->nframes = 0;
|
|
}
|
|
gst_videomixer2_reset_qos (mix);
|
|
}
|
|
|
|
mix->info = info;
|
|
|
|
switch (GST_VIDEO_INFO_FORMAT (&mix->info)) {
|
|
case GST_VIDEO_FORMAT_AYUV:
|
|
mix->blend = gst_video_mixer_blend_ayuv;
|
|
mix->overlay = gst_video_mixer_overlay_ayuv;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_ayuv;
|
|
mix->fill_color = gst_video_mixer_fill_color_ayuv;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_ARGB:
|
|
mix->blend = gst_video_mixer_blend_argb;
|
|
mix->overlay = gst_video_mixer_overlay_argb;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_argb;
|
|
mix->fill_color = gst_video_mixer_fill_color_argb;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGRA:
|
|
mix->blend = gst_video_mixer_blend_bgra;
|
|
mix->overlay = gst_video_mixer_overlay_bgra;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_bgra;
|
|
mix->fill_color = gst_video_mixer_fill_color_bgra;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_ABGR:
|
|
mix->blend = gst_video_mixer_blend_abgr;
|
|
mix->overlay = gst_video_mixer_overlay_abgr;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_abgr;
|
|
mix->fill_color = gst_video_mixer_fill_color_abgr;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGBA:
|
|
mix->blend = gst_video_mixer_blend_rgba;
|
|
mix->overlay = gst_video_mixer_overlay_rgba;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_rgba;
|
|
mix->fill_color = gst_video_mixer_fill_color_rgba;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y444:
|
|
mix->blend = gst_video_mixer_blend_y444;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_y444;
|
|
mix->fill_color = gst_video_mixer_fill_color_y444;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y42B:
|
|
mix->blend = gst_video_mixer_blend_y42b;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_y42b;
|
|
mix->fill_color = gst_video_mixer_fill_color_y42b;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
mix->blend = gst_video_mixer_blend_yuy2;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_yuy2;
|
|
mix->fill_color = gst_video_mixer_fill_color_yuy2;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
mix->blend = gst_video_mixer_blend_uyvy;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_uyvy;
|
|
mix->fill_color = gst_video_mixer_fill_color_uyvy;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YVYU:
|
|
mix->blend = gst_video_mixer_blend_yvyu;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_yvyu;
|
|
mix->fill_color = gst_video_mixer_fill_color_yvyu;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_I420:
|
|
mix->blend = gst_video_mixer_blend_i420;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_i420;
|
|
mix->fill_color = gst_video_mixer_fill_color_i420;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
mix->blend = gst_video_mixer_blend_yv12;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_yv12;
|
|
mix->fill_color = gst_video_mixer_fill_color_yv12;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV12:
|
|
mix->blend = gst_video_mixer_blend_nv12;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_nv12;
|
|
mix->fill_color = gst_video_mixer_fill_color_nv12;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_NV21:
|
|
mix->blend = gst_video_mixer_blend_nv21;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_nv21;
|
|
mix->fill_color = gst_video_mixer_fill_color_nv21;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_Y41B:
|
|
mix->blend = gst_video_mixer_blend_y41b;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_y41b;
|
|
mix->fill_color = gst_video_mixer_fill_color_y41b;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGB:
|
|
mix->blend = gst_video_mixer_blend_rgb;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_rgb;
|
|
mix->fill_color = gst_video_mixer_fill_color_rgb;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
mix->blend = gst_video_mixer_blend_bgr;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_bgr;
|
|
mix->fill_color = gst_video_mixer_fill_color_bgr;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_xRGB:
|
|
mix->blend = gst_video_mixer_blend_xrgb;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_xrgb;
|
|
mix->fill_color = gst_video_mixer_fill_color_xrgb;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_xBGR:
|
|
mix->blend = gst_video_mixer_blend_xbgr;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_xbgr;
|
|
mix->fill_color = gst_video_mixer_fill_color_xbgr;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_RGBx:
|
|
mix->blend = gst_video_mixer_blend_rgbx;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_rgbx;
|
|
mix->fill_color = gst_video_mixer_fill_color_rgbx;
|
|
ret = TRUE;
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
mix->blend = gst_video_mixer_blend_bgrx;
|
|
mix->overlay = mix->blend;
|
|
mix->fill_checker = gst_video_mixer_fill_checker_bgrx;
|
|
mix->fill_color = gst_video_mixer_fill_color_bgrx;
|
|
ret = TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
|
|
if (mix->current_caps == NULL ||
|
|
gst_caps_is_equal (caps, mix->current_caps) == FALSE) {
|
|
gst_caps_replace (&mix->current_caps, caps);
|
|
mix->send_caps = TRUE;
|
|
}
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_videomixer2_sink_clip (GstCollectPads * pads,
|
|
GstCollectData * data, GstBuffer * buf, GstBuffer ** outbuf,
|
|
GstVideoMixer2 * mix)
|
|
{
|
|
GstVideoMixer2Pad *pad = GST_VIDEO_MIXER2_PAD (data->pad);
|
|
GstVideoMixer2Collect *mixcol = pad->mixcol;
|
|
GstClockTime start_time, end_time;
|
|
|
|
start_time = GST_BUFFER_TIMESTAMP (buf);
|
|
if (start_time == -1) {
|
|
GST_ERROR_OBJECT (pad, "Timestamped buffers required!");
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
end_time = GST_BUFFER_DURATION (buf);
|
|
if (end_time == -1 && GST_VIDEO_INFO_FPS_N (&pad->info) != 0)
|
|
end_time =
|
|
gst_util_uint64_scale_int_round (GST_SECOND,
|
|
GST_VIDEO_INFO_FPS_D (&pad->info), GST_VIDEO_INFO_FPS_N (&pad->info));
|
|
if (end_time == -1) {
|
|
*outbuf = buf;
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
start_time = MAX (start_time, mixcol->collect.segment.start);
|
|
start_time =
|
|
gst_segment_to_running_time (&mixcol->collect.segment,
|
|
GST_FORMAT_TIME, start_time);
|
|
|
|
end_time += GST_BUFFER_TIMESTAMP (buf);
|
|
if (mixcol->collect.segment.stop != -1)
|
|
end_time = MIN (end_time, mixcol->collect.segment.stop);
|
|
end_time =
|
|
gst_segment_to_running_time (&mixcol->collect.segment,
|
|
GST_FORMAT_TIME, end_time);
|
|
|
|
/* Convert to the output segment rate */
|
|
if (ABS (mix->segment.rate) != 1.0) {
|
|
start_time *= ABS (mix->segment.rate);
|
|
end_time *= ABS (mix->segment.rate);
|
|
}
|
|
|
|
if (mixcol->buffer != NULL && end_time < mixcol->end_time) {
|
|
gst_buffer_unref (buf);
|
|
*outbuf = NULL;
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
*outbuf = buf;
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_flush (GstCollectPads * pads, GstVideoMixer2 * mix)
|
|
{
|
|
if (mix->pending_tags) {
|
|
gst_tag_list_unref (mix->pending_tags);
|
|
mix->pending_tags = NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_sink_event (GstCollectPads * pads, GstCollectData * cdata,
|
|
GstEvent * event, GstVideoMixer2 * mix)
|
|
{
|
|
GstVideoMixer2Pad *pad = GST_VIDEO_MIXER2_PAD (cdata->pad);
|
|
gboolean ret = TRUE, discard = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (pad, "Got %s event: %" GST_PTR_FORMAT,
|
|
GST_EVENT_TYPE_NAME (event), event);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
ret =
|
|
gst_videomixer2_pad_sink_setcaps (GST_PAD (pad), GST_OBJECT (mix),
|
|
caps);
|
|
gst_event_unref (event);
|
|
event = NULL;
|
|
break;
|
|
}
|
|
case GST_EVENT_SEGMENT:{
|
|
GstSegment seg;
|
|
gst_event_copy_segment (event, &seg);
|
|
|
|
g_assert (seg.format == GST_FORMAT_TIME);
|
|
gst_videomixer2_reset_qos (mix);
|
|
break;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
mix->newseg_pending = TRUE;
|
|
|
|
gst_videomixer2_reset_qos (mix);
|
|
gst_buffer_replace (&pad->mixcol->buffer, NULL);
|
|
pad->mixcol->start_time = -1;
|
|
pad->mixcol->end_time = -1;
|
|
|
|
mix->segment.position = -1;
|
|
mix->ts_offset = 0;
|
|
mix->nframes = 0;
|
|
break;
|
|
case GST_EVENT_TAG:
|
|
{
|
|
/* collect tags here so we can push them out when we collect data */
|
|
GstTagList *tags;
|
|
|
|
gst_event_parse_tag (event, &tags);
|
|
tags = gst_tag_list_merge (mix->pending_tags, tags, GST_TAG_MERGE_APPEND);
|
|
if (mix->pending_tags)
|
|
gst_tag_list_unref (mix->pending_tags);
|
|
mix->pending_tags = tags;
|
|
event = NULL;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (event != NULL)
|
|
return gst_collect_pads_event_default (pads, cdata, event, discard);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
forward_event_func (GValue * item, GValue * ret, GstEvent * event)
|
|
{
|
|
GstPad *pad = g_value_get_object (item);
|
|
gst_event_ref (event);
|
|
GST_LOG_OBJECT (pad, "About to send event %s", GST_EVENT_TYPE_NAME (event));
|
|
if (!gst_pad_push_event (pad, event)) {
|
|
g_value_set_boolean (ret, FALSE);
|
|
GST_WARNING_OBJECT (pad, "Sending event %p (%s) failed.",
|
|
event, GST_EVENT_TYPE_NAME (event));
|
|
} else {
|
|
GST_LOG_OBJECT (pad, "Sent event %p (%s).",
|
|
event, GST_EVENT_TYPE_NAME (event));
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_videomixer2_push_sink_event (GstVideoMixer2 * mix, GstEvent * event)
|
|
{
|
|
GstIterator *it;
|
|
GValue vret = { 0 };
|
|
|
|
GST_LOG_OBJECT (mix, "Forwarding event %p (%s)", event,
|
|
GST_EVENT_TYPE_NAME (event));
|
|
|
|
g_value_init (&vret, G_TYPE_BOOLEAN);
|
|
g_value_set_boolean (&vret, TRUE);
|
|
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix));
|
|
gst_iterator_fold (it, (GstIteratorFoldFunction) forward_event_func, &vret,
|
|
event);
|
|
gst_iterator_free (it);
|
|
gst_event_unref (event);
|
|
|
|
return g_value_get_boolean (&vret);
|
|
}
|
|
|
|
/* GstElement vmethods */
|
|
static GstStateChangeReturn
|
|
gst_videomixer2_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
mix->send_stream_start = TRUE;
|
|
mix->send_caps = TRUE;
|
|
gst_segment_init (&mix->segment, GST_FORMAT_TIME);
|
|
gst_caps_replace (&mix->current_caps, NULL);
|
|
GST_LOG_OBJECT (mix, "starting collectpads");
|
|
gst_collect_pads_start (mix->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
GST_LOG_OBJECT (mix, "stopping collectpads");
|
|
gst_collect_pads_stop (mix->collect);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_videomixer2_reset (mix);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstPad *
|
|
gst_videomixer2_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
|
|
{
|
|
GstVideoMixer2 *mix;
|
|
GstVideoMixer2Pad *mixpad;
|
|
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
|
|
|
|
mix = GST_VIDEO_MIXER2 (element);
|
|
|
|
if (templ == gst_element_class_get_pad_template (klass, "sink_%u")) {
|
|
guint serial = 0;
|
|
gchar *name = NULL;
|
|
GstVideoMixer2Collect *mixcol = NULL;
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
if (req_name == NULL || strlen (req_name) < 6
|
|
|| !g_str_has_prefix (req_name, "sink_")) {
|
|
/* no name given when requesting the pad, use next available int */
|
|
serial = mix->next_sinkpad++;
|
|
} else {
|
|
/* parse serial number from requested padname */
|
|
serial = g_ascii_strtoull (&req_name[5], NULL, 10);
|
|
if (serial >= mix->next_sinkpad)
|
|
mix->next_sinkpad = serial + 1;
|
|
}
|
|
/* create new pad with the name */
|
|
name = g_strdup_printf ("sink_%u", serial);
|
|
mixpad = g_object_new (GST_TYPE_VIDEO_MIXER2_PAD, "name", name, "direction",
|
|
templ->direction, "template", templ, NULL);
|
|
g_free (name);
|
|
|
|
mixpad->zorder = mix->numpads;
|
|
mixpad->xpos = DEFAULT_PAD_XPOS;
|
|
mixpad->ypos = DEFAULT_PAD_YPOS;
|
|
mixpad->alpha = DEFAULT_PAD_ALPHA;
|
|
|
|
mixcol = (GstVideoMixer2Collect *)
|
|
gst_collect_pads_add_pad (mix->collect, GST_PAD (mixpad),
|
|
sizeof (GstVideoMixer2Collect),
|
|
(GstCollectDataDestroyNotify) gst_videomixer2_collect_free, TRUE);
|
|
|
|
/* Keep track of each other */
|
|
mixcol->mixpad = mixpad;
|
|
mixpad->mixcol = mixcol;
|
|
|
|
mixcol->start_time = -1;
|
|
mixcol->end_time = -1;
|
|
|
|
/* Keep an internal list of mixpads for zordering */
|
|
mix->sinkpads = g_slist_insert_sorted (mix->sinkpads, mixpad,
|
|
(GCompareFunc) pad_zorder_compare);
|
|
mix->numpads++;
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (element, "Adding pad %s", GST_PAD_NAME (mixpad));
|
|
|
|
/* add the pad to the element */
|
|
gst_element_add_pad (element, GST_PAD (mixpad));
|
|
gst_child_proxy_child_added (GST_CHILD_PROXY (mix), G_OBJECT (mixpad),
|
|
GST_OBJECT_NAME (mixpad));
|
|
|
|
return GST_PAD (mixpad);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstVideoMixer2 *mix = NULL;
|
|
GstVideoMixer2Pad *mixpad;
|
|
gboolean update_caps;
|
|
|
|
mix = GST_VIDEO_MIXER2 (element);
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
if (G_UNLIKELY (g_slist_find (mix->sinkpads, pad) == NULL)) {
|
|
g_warning ("Unknown pad %s", GST_PAD_NAME (pad));
|
|
goto error;
|
|
}
|
|
|
|
mixpad = GST_VIDEO_MIXER2_PAD (pad);
|
|
|
|
if (mixpad->convert)
|
|
gst_video_converter_free (mixpad->convert);
|
|
mixpad->convert = NULL;
|
|
|
|
mix->sinkpads = g_slist_remove (mix->sinkpads, pad);
|
|
gst_child_proxy_child_removed (GST_CHILD_PROXY (mix), G_OBJECT (mixpad),
|
|
GST_OBJECT_NAME (mixpad));
|
|
mix->numpads--;
|
|
|
|
GST_COLLECT_PADS_STREAM_LOCK (mix->collect);
|
|
gst_videomixer2_update_converters (mix);
|
|
GST_COLLECT_PADS_STREAM_UNLOCK (mix->collect);
|
|
|
|
update_caps = GST_VIDEO_INFO_FORMAT (&mix->info) != GST_VIDEO_FORMAT_UNKNOWN;
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
|
|
gst_collect_pads_remove_pad (mix->collect, pad);
|
|
|
|
if (update_caps)
|
|
gst_videomixer2_update_src_caps (mix);
|
|
|
|
gst_element_remove_pad (element, pad);
|
|
return;
|
|
error:
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
}
|
|
|
|
/* GObject vmethods */
|
|
static void
|
|
gst_videomixer2_finalize (GObject * o)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (o);
|
|
|
|
gst_object_unref (mix->collect);
|
|
g_mutex_clear (&mix->lock);
|
|
g_mutex_clear (&mix->setcaps_lock);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (o);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_dispose (GObject * o)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (o);
|
|
GSList *tmp;
|
|
|
|
for (tmp = mix->sinkpads; tmp; tmp = tmp->next) {
|
|
GstVideoMixer2Pad *mixpad = tmp->data;
|
|
|
|
if (mixpad->convert)
|
|
gst_video_converter_free (mixpad->convert);
|
|
mixpad->convert = NULL;
|
|
}
|
|
|
|
if (mix->pending_tags) {
|
|
gst_tag_list_unref (mix->pending_tags);
|
|
mix->pending_tags = NULL;
|
|
}
|
|
|
|
gst_caps_replace (&mix->current_caps, NULL);
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (o);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_BACKGROUND:
|
|
g_value_set_enum (value, mix->background);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_BACKGROUND:
|
|
mix->background = g_value_get_enum (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* GstChildProxy implementation */
|
|
static GObject *
|
|
gst_videomixer2_child_proxy_get_child_by_index (GstChildProxy * child_proxy,
|
|
guint index)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (child_proxy);
|
|
GObject *obj;
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
if ((obj = g_slist_nth_data (mix->sinkpads, index)))
|
|
g_object_ref (obj);
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
return obj;
|
|
}
|
|
|
|
static guint
|
|
gst_videomixer2_child_proxy_get_children_count (GstChildProxy * child_proxy)
|
|
{
|
|
guint count = 0;
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (child_proxy);
|
|
|
|
GST_VIDEO_MIXER2_LOCK (mix);
|
|
count = mix->numpads;
|
|
GST_VIDEO_MIXER2_UNLOCK (mix);
|
|
GST_INFO_OBJECT (mix, "Children Count: %d", count);
|
|
return count;
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_child_proxy_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstChildProxyInterface *iface = g_iface;
|
|
|
|
GST_INFO ("initializing child proxy interface");
|
|
iface->get_child_by_index = gst_videomixer2_child_proxy_get_child_by_index;
|
|
iface->get_children_count = gst_videomixer2_child_proxy_get_children_count;
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_constructed (GObject * obj)
|
|
{
|
|
GstVideoMixer2 *mix = GST_VIDEO_MIXER2 (obj);
|
|
gchar *cp_name;
|
|
|
|
cp_name = g_strconcat (GST_OBJECT_NAME (obj), "-collectpads", NULL);
|
|
gst_object_set_name (GST_OBJECT (mix->collect), cp_name);
|
|
g_free (cp_name);
|
|
|
|
G_OBJECT_CLASS (gst_videomixer2_parent_class)->constructed (obj);
|
|
}
|
|
|
|
/* GObject boilerplate */
|
|
static void
|
|
gst_videomixer2_class_init (GstVideoMixer2Class * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
GstElementClass *gstelement_class = (GstElementClass *) klass;
|
|
|
|
gobject_class->constructed = gst_videomixer2_constructed;
|
|
gobject_class->finalize = gst_videomixer2_finalize;
|
|
gobject_class->dispose = gst_videomixer2_dispose;
|
|
|
|
gobject_class->get_property = gst_videomixer2_get_property;
|
|
gobject_class->set_property = gst_videomixer2_set_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_BACKGROUND,
|
|
g_param_spec_enum ("background", "Background", "Background type",
|
|
GST_TYPE_VIDEO_MIXER2_BACKGROUND,
|
|
DEFAULT_BACKGROUND, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gstelement_class->request_new_pad =
|
|
GST_DEBUG_FUNCPTR (gst_videomixer2_request_new_pad);
|
|
gstelement_class->release_pad =
|
|
GST_DEBUG_FUNCPTR (gst_videomixer2_release_pad);
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_videomixer2_change_state);
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class, &src_factory);
|
|
gst_element_class_add_static_pad_template (gstelement_class, &sink_factory);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class, "Video mixer 2",
|
|
"Filter/Editor/Video/Compositor",
|
|
"Mix multiple video streams", "Wim Taymans <wim@fluendo.com>, "
|
|
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
|
|
/* Register the pad class */
|
|
g_type_class_ref (GST_TYPE_VIDEO_MIXER2_PAD);
|
|
|
|
gst_type_mark_as_plugin_api (GST_TYPE_VIDEO_MIXER2_BACKGROUND, 0);
|
|
}
|
|
|
|
static void
|
|
gst_videomixer2_init (GstVideoMixer2 * mix)
|
|
{
|
|
GstElementClass *klass = GST_ELEMENT_GET_CLASS (mix);
|
|
|
|
mix->srcpad =
|
|
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
|
|
"src"), "src");
|
|
gst_pad_set_query_function (GST_PAD (mix->srcpad),
|
|
GST_DEBUG_FUNCPTR (gst_videomixer2_src_query));
|
|
gst_pad_set_event_function (GST_PAD (mix->srcpad),
|
|
GST_DEBUG_FUNCPTR (gst_videomixer2_src_event));
|
|
gst_element_add_pad (GST_ELEMENT (mix), mix->srcpad);
|
|
|
|
mix->collect = gst_collect_pads_new ();
|
|
gst_collect_pads_set_flush_function (mix->collect,
|
|
(GstCollectPadsFlushFunction) gst_videomixer2_flush, mix);
|
|
mix->background = DEFAULT_BACKGROUND;
|
|
mix->current_caps = NULL;
|
|
mix->pending_tags = NULL;
|
|
|
|
gst_collect_pads_set_function (mix->collect,
|
|
(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_videomixer2_collected),
|
|
mix);
|
|
gst_collect_pads_set_event_function (mix->collect,
|
|
(GstCollectPadsEventFunction) gst_videomixer2_sink_event, mix);
|
|
gst_collect_pads_set_query_function (mix->collect,
|
|
(GstCollectPadsQueryFunction) gst_videomixer2_sink_query, mix);
|
|
gst_collect_pads_set_clip_function (mix->collect,
|
|
(GstCollectPadsClipFunction) gst_videomixer2_sink_clip, mix);
|
|
|
|
g_mutex_init (&mix->lock);
|
|
g_mutex_init (&mix->setcaps_lock);
|
|
/* initialize variables */
|
|
gst_videomixer2_reset (mix);
|
|
}
|
|
|
|
/* Element registration */
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_videomixer2_debug, "videomixer", 0,
|
|
"video mixer");
|
|
|
|
gst_video_mixer_init_blend ();
|
|
|
|
return gst_element_register (plugin, "videomixer", GST_RANK_PRIMARY,
|
|
GST_TYPE_VIDEO_MIXER2);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
videomixer,
|
|
"Video mixer", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
|
|
GST_PACKAGE_ORIGIN)
|