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801 lines
24 KiB
C
801 lines
24 KiB
C
/*
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* Combine video streams to 3D stereo
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*
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* GStreamer
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* Copyright (C) 2009 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2014 Jan Schmidt <jan@noraisin.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., 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-glstereomix
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* @title: glstereomix
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*
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* Combine 2 input streams to produce a stereoscopic output
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* stream. Input views are taken from the left pad and right pad
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* respectively, and mixed according to their timelines.
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*
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* If either input stream is stereoscopic, the approproriate view
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* (left or right) is taken from each stream and placed into the output.
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*
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* The multiview representation on the output is chosen according to
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* the downstream caps.
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*
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* ## Examples
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* |[
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* gst-launch-1.0 -v videotestsrc pattern=ball name=left \
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* videotestsrc name=right glstereomix name=mix \
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* left. ! vid/x-raw,width=640,height=480! glupload ! mix. \
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* right. ! video/x-raw,width=640,height=480! glupload ! mix. \
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* mix. ! video/x-raw'(memory:GLMemory)',multiview-mode=side-by-side ! \
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* queue ! glimagesink output-multiview-mode=side-by-side
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* ]| Mix 2 different videotestsrc patterns into a side-by-side stereo image and display it.
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* |[
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* gst-launch-1.0 -ev v4l2src name=left \
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* videotestsrc name=right \
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* glstereomix name=mix \
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* left. ! video/x-raw,width=640,height=480 ! glupload ! glcolorconvert ! mix. \
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* right. ! video/x-raw,width=640,height=480 ! glupload ! mix. \
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* mix. ! video/x-raw'(memory:GLMemory)',multiview-mode=top-bottom ! \
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* glcolorconvert ! gldownload ! queue ! x264enc ! h264parse ! \
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* mp4mux ! progressreport ! filesink location=output.mp4
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* ]| Mix the input from a camera to the left view, and videotestsrc to the right view,
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* and encode as a top-bottom frame packed H.264 video.
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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 "gstglelements.h"
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#include "gstglstereomix.h"
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#include <gst/gl/gl.h>
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#define GST_CAT_DEFAULT gst_gl_stereo_mix_debug
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GST_DEBUG_CATEGORY (gst_gl_stereo_mix_debug);
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G_DEFINE_TYPE (GstGLStereoMixPad, gst_gl_stereo_mix_pad, GST_TYPE_GL_MIXER_PAD);
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static void
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gst_gl_stereo_mix_pad_class_init (GstGLStereoMixPadClass * klass)
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{
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}
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static void
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gst_gl_stereo_mix_pad_init (GstGLStereoMixPad * pad)
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{
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}
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static void gst_gl_stereo_mix_child_proxy_init (gpointer g_iface,
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gpointer iface_data);
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#define gst_gl_stereo_mix_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstGLStereoMix, gst_gl_stereo_mix, GST_TYPE_GL_MIXER,
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G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY,
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gst_gl_stereo_mix_child_proxy_init));
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (glstereomix, "glstereomix",
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GST_RANK_NONE, GST_TYPE_GL_STEREO_MIX, gl_element_init (plugin));
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static GstCaps *_update_caps (GstVideoAggregator * vagg, GstCaps * caps);
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static gboolean _negotiated_caps (GstAggregator * aggregator, GstCaps * caps);
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static gboolean gst_gl_stereo_mix_make_output (GstGLStereoMix * mix);
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static gboolean gst_gl_stereo_mix_process_frames (GstGLStereoMix * mixer);
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#define DEFAULT_DOWNMIX GST_GL_STEREO_DOWNMIX_ANAGLYPH_GREEN_MAGENTA_DUBOIS
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/* GLStereoMix signals and args */
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enum
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{
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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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{
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PROP_0,
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PROP_DOWNMIX_MODE
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};
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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 ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
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"format = (string) RGBA, "
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"width = " GST_VIDEO_SIZE_RANGE ", "
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"height = " GST_VIDEO_SIZE_RANGE ", "
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"framerate = " GST_VIDEO_FPS_RANGE ","
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"texture-target = (string) 2D"
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"; "
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
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"RGBA")
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"; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_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 ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
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"format = (string) RGBA, "
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"width = " GST_VIDEO_SIZE_RANGE ", "
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"height = " GST_VIDEO_SIZE_RANGE ", "
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"framerate = " GST_VIDEO_FPS_RANGE ","
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"texture-target = (string) 2D"
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"; "
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
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"RGBA")
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"; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
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);
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static GstPad *gst_gl_stereo_mix_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * req_name, const GstCaps * caps);
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static void gst_gl_stereo_mix_release_pad (GstElement * element, GstPad * pad);
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static GstFlowReturn gst_gl_stereo_mix_create_output_buffer (GstVideoAggregator
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* videoaggregator, GstBuffer ** outbuf);
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static gboolean gst_gl_stereo_mix_stop (GstAggregator * agg);
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static gboolean gst_gl_stereo_mix_start (GstAggregator * agg);
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static gboolean gst_gl_stereo_mix_src_query (GstAggregator * agg,
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GstQuery * query);
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static void gst_gl_stereo_mix_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gl_stereo_mix_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gl_stereo_mix_finalize (GObject * object);
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static GstFlowReturn
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gst_gl_stereo_mix_aggregate_frames (GstVideoAggregator * vagg,
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GstBuffer * outbuffer);
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static void
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gst_gl_stereo_mix_class_init (GstGLStereoMixClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstVideoAggregatorClass *videoaggregator_class =
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(GstVideoAggregatorClass *) klass;
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GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
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GstGLBaseMixerClass *base_mix_class = (GstGLBaseMixerClass *) klass;
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glstereomixer", 0,
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"opengl stereoscopic mixer");
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_stereo_mix_finalize);
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gobject_class->get_property = gst_gl_stereo_mix_get_property;
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gobject_class->set_property = gst_gl_stereo_mix_set_property;
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gst_element_class_set_metadata (element_class, "OpenGL stereo video combiner",
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"Filter/Effect/Video", "OpenGL stereo video combiner",
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"Jan Schmidt <jan@centricular.com>");
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g_object_class_install_property (gobject_class, PROP_DOWNMIX_MODE,
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g_param_spec_enum ("downmix-mode", "Mode for mono downmixed output",
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"Output anaglyph type to generate when downmixing to mono",
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GST_TYPE_GL_STEREO_DOWNMIX, DEFAULT_DOWNMIX,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_static_pad_template_with_gtype (element_class,
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&src_factory, GST_TYPE_AGGREGATOR_PAD);
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gst_element_class_add_static_pad_template_with_gtype (element_class,
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&sink_factory, GST_TYPE_GL_STEREO_MIX_PAD);
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element_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_gl_stereo_mix_request_new_pad);
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element_class->release_pad =
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GST_DEBUG_FUNCPTR (gst_gl_stereo_mix_release_pad);
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agg_class->stop = gst_gl_stereo_mix_stop;
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agg_class->start = gst_gl_stereo_mix_start;
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agg_class->src_query = gst_gl_stereo_mix_src_query;
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agg_class->negotiated_src_caps = _negotiated_caps;
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videoaggregator_class->aggregate_frames = gst_gl_stereo_mix_aggregate_frames;
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videoaggregator_class->update_caps = _update_caps;
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videoaggregator_class->create_output_buffer =
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gst_gl_stereo_mix_create_output_buffer;
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base_mix_class->supported_gl_api =
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GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3;
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gst_type_mark_as_plugin_api (GST_TYPE_GL_STEREO_DOWNMIX, 0);
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gst_type_mark_as_plugin_api (GST_TYPE_GL_STEREO_MIX_PAD, 0);
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}
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static void
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gst_gl_stereo_mix_init (GstGLStereoMix * mix)
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{
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}
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static void
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gst_gl_stereo_mix_finalize (GObject * object)
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{
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//GstGLStereoMix *mix = GST_GL_STEREO_MIX (object);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_gl_stereo_mix_query_caps (GstPad * pad, GstAggregator * agg,
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GstQuery * query)
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{
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GstCaps *filter, *caps;
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gst_query_parse_caps (query, &filter);
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caps = gst_pad_get_current_caps (agg->srcpad);
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if (caps == NULL) {
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caps = gst_pad_get_pad_template_caps (agg->srcpad);
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}
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if (filter)
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caps = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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return TRUE;
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}
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static gboolean
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gst_gl_stereo_mix_src_query (GstAggregator * agg, GstQuery * query)
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{
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CAPS:
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return gst_gl_stereo_mix_query_caps (agg->srcpad, agg, query);
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break;
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default:
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break;
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}
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return GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
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}
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static GstFlowReturn
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gst_gl_stereo_mix_create_output_buffer (GstVideoAggregator * videoaggregator,
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GstBuffer ** outbuf)
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{
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GstGLStereoMix *mix = GST_GL_STEREO_MIX (videoaggregator);
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GstFlowReturn ret = GST_FLOW_OK;
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#if 0
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if (!mix->priv->pool_active) {
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if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
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GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
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("failed to activate bufferpool"), ("failed to activate bufferpool"));
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return GST_FLOW_ERROR;
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}
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mix->priv->pool_active = TRUE;
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}
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return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
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#endif
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if (!gst_gl_stereo_mix_make_output (mix)) {
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gst_buffer_replace (&mix->primary_out, NULL);
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gst_buffer_replace (&mix->auxilliary_out, NULL);
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GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
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("Failed to generate output"), ("failed to generate output"));
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ret = GST_FLOW_ERROR;
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}
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if (mix->auxilliary_out) {
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*outbuf = mix->auxilliary_out;
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mix->auxilliary_out = NULL;
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} else {
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*outbuf = mix->primary_out;
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mix->primary_out = NULL;
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}
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return ret;
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}
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static gboolean
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gst_gl_stereo_mix_make_output (GstGLStereoMix * mix)
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{
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GList *walk;
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gboolean res = FALSE;
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GstElement *element = GST_ELEMENT (mix);
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gboolean missing_buffer = FALSE;
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GST_LOG_OBJECT (mix, "Processing buffers");
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GST_OBJECT_LOCK (mix);
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walk = element->sinkpads;
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while (walk) {
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GstVideoAggregatorPad *vaggpad = walk->data;
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GstGLStereoMixPad *pad = walk->data;
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GstBuffer *buffer = gst_video_aggregator_pad_get_current_buffer (vaggpad);
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GST_LOG_OBJECT (mix, "Checking pad %" GST_PTR_FORMAT, vaggpad);
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if (buffer != NULL) {
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pad->current_buffer = buffer;
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GST_DEBUG_OBJECT (pad, "Got buffer %" GST_PTR_FORMAT,
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pad->current_buffer);
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} else {
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GST_LOG_OBJECT (mix, "No buffer on pad %" GST_PTR_FORMAT, vaggpad);
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pad->current_buffer = NULL;
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missing_buffer = TRUE;
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}
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walk = g_list_next (walk);
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}
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if (missing_buffer) {
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/* We're still waiting for a buffer to turn up on at least one input */
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GST_WARNING_OBJECT (mix, "Not generating output - need more input buffers");
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res = TRUE;
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goto out;
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}
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/* Copy GL memory from each input frame to the output */
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if (!gst_gl_stereo_mix_process_frames (mix)) {
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GST_LOG_OBJECT (mix, "Failed to process frames to output");
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goto out;
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}
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if (mix->primary_out == NULL)
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goto out;
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res = TRUE;
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out:
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GST_OBJECT_UNLOCK (mix);
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return res;
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}
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static GstFlowReturn
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gst_gl_stereo_mix_aggregate_frames (GstVideoAggregator * vagg,
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GstBuffer * outbuf)
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{
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GstGLStereoMix *mix = GST_GL_STEREO_MIX (vagg);
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/* If we're operating in frame-by-frame mode, push
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* the primary view now, and let the parent class
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* push the remaining auxiliary view */
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if (GST_VIDEO_INFO_MULTIVIEW_MODE (&vagg->info) ==
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GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) {
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/* Transfer the timestamps video-agg put on the aux buffer */
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gst_buffer_copy_into (mix->primary_out, outbuf,
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GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
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gst_aggregator_finish_buffer (GST_AGGREGATOR (vagg), mix->primary_out);
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mix->primary_out = NULL;
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/* And actually, we don't want timestamps on the aux buffer */
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GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
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GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
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}
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return GST_FLOW_OK;
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}
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static void
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gst_gl_stereo_mix_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstGLStereoMix *mix = GST_GL_STEREO_MIX (object);
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switch (prop_id) {
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case PROP_DOWNMIX_MODE:
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g_value_set_enum (value, mix->downmix_mode);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gl_stereo_mix_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstGLStereoMix *mix = GST_GL_STEREO_MIX (object);
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switch (prop_id) {
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case PROP_DOWNMIX_MODE:
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mix->downmix_mode = g_value_get_enum (value);
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if (mix->viewconvert)
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g_object_set_property (G_OBJECT (mix->viewconvert), "downmix-mode",
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value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstPad *
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gst_gl_stereo_mix_request_new_pad (GstElement * element, GstPadTemplate * templ,
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const gchar * req_name, const GstCaps * caps)
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{
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GstPad *newpad;
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newpad = (GstPad *)
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GST_ELEMENT_CLASS (parent_class)->request_new_pad (element,
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templ, req_name, caps);
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if (newpad == NULL)
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goto could_not_create;
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gst_child_proxy_child_added (GST_CHILD_PROXY (element), G_OBJECT (newpad),
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GST_OBJECT_NAME (newpad));
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return GST_PAD_CAST (newpad);
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could_not_create:
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{
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GST_DEBUG_OBJECT (element, "could not create/add pad");
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return NULL;
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}
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}
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static void
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gst_gl_stereo_mix_release_pad (GstElement * element, GstPad * pad)
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{
|
|
GST_DEBUG_OBJECT (element, "release pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
gst_child_proxy_child_removed (GST_CHILD_PROXY (element), G_OBJECT (pad),
|
|
GST_OBJECT_NAME (pad));
|
|
|
|
GST_ELEMENT_CLASS (parent_class)->release_pad (element, pad);
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_stereo_mix_start (GstAggregator * agg)
|
|
{
|
|
GstGLStereoMix *mix = GST_GL_STEREO_MIX (agg);
|
|
|
|
if (!GST_AGGREGATOR_CLASS (parent_class)->start (agg))
|
|
return FALSE;
|
|
|
|
GST_OBJECT_LOCK (mix);
|
|
mix->viewconvert = gst_gl_view_convert_new ();
|
|
g_object_set (G_OBJECT (mix->viewconvert), "downmix-mode",
|
|
mix->downmix_mode, NULL);
|
|
GST_OBJECT_UNLOCK (mix);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_stereo_mix_stop (GstAggregator * agg)
|
|
{
|
|
GstGLStereoMix *mix = GST_GL_STEREO_MIX (agg);
|
|
|
|
if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg))
|
|
return FALSE;
|
|
|
|
if (mix->viewconvert) {
|
|
gst_object_unref (mix->viewconvert);
|
|
mix->viewconvert = NULL;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Convert to caps that can be accepted by this element... */
|
|
static GstCaps *
|
|
get_converted_caps (GstGLStereoMix * mix, GstCaps * caps)
|
|
{
|
|
#if 0
|
|
GstGLContext *context = GST_GL_BASE_MIXER (mix)->context;
|
|
GstCaps *result, *tmp;
|
|
|
|
GST_LOG_OBJECT (mix, "Converting caps %" GST_PTR_FORMAT, caps);
|
|
result = gst_gl_upload_transform_caps (context, GST_PAD_SINK, caps, NULL);
|
|
tmp = result;
|
|
GST_TRACE_OBJECT (mix, "transfer returned caps %" GST_PTR_FORMAT, tmp);
|
|
|
|
result =
|
|
gst_gl_color_convert_transform_caps (context, GST_PAD_SINK, tmp, NULL);
|
|
gst_caps_unref (tmp);
|
|
GST_TRACE_OBJECT (mix, "convert returned caps %" GST_PTR_FORMAT, tmp);
|
|
|
|
tmp = result;
|
|
result = gst_gl_view_convert_transform_caps (mix->viewconvert,
|
|
GST_PAD_SINK, tmp, NULL);
|
|
gst_caps_unref (tmp);
|
|
#else
|
|
GstCaps *result;
|
|
|
|
GST_LOG_OBJECT (mix, "Converting caps %" GST_PTR_FORMAT, caps);
|
|
result = gst_gl_view_convert_transform_caps (mix->viewconvert,
|
|
GST_PAD_SINK, caps, NULL);
|
|
#endif
|
|
|
|
GST_LOG_OBJECT (mix, "returning caps %" GST_PTR_FORMAT, result);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Return the possible output caps based on inputs and downstream prefs */
|
|
static GstCaps *
|
|
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
|
|
{
|
|
GstGLStereoMix *mix = GST_GL_STEREO_MIX (vagg);
|
|
GList *l;
|
|
gint best_width = -1, best_height = -1;
|
|
gdouble best_fps = -1, cur_fps;
|
|
gint best_fps_n = 0, best_fps_d = 1;
|
|
GstVideoInfo *mix_info;
|
|
GstCaps *blend_caps, *tmp_caps;
|
|
GstCaps *out_caps;
|
|
|
|
GST_OBJECT_LOCK (vagg);
|
|
|
|
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
|
|
GstVideoAggregatorPad *pad = l->data;
|
|
GstVideoInfo tmp = pad->info;
|
|
gint this_width, this_height;
|
|
gint fps_n, fps_d;
|
|
|
|
if (!pad->info.finfo)
|
|
continue;
|
|
|
|
/* This can happen if we release a pad and another pad hasn't been negotiated_caps yet */
|
|
if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN)
|
|
continue;
|
|
|
|
/* Convert to per-view width/height for unpacked forms */
|
|
gst_video_multiview_video_info_change_mode (&tmp,
|
|
GST_VIDEO_MULTIVIEW_MODE_SEPARATED, GST_VIDEO_MULTIVIEW_FLAGS_NONE);
|
|
|
|
this_width = GST_VIDEO_INFO_WIDTH (&tmp);
|
|
this_height = GST_VIDEO_INFO_HEIGHT (&tmp);
|
|
fps_n = GST_VIDEO_INFO_FPS_N (&tmp);
|
|
fps_d = GST_VIDEO_INFO_FPS_D (&tmp);
|
|
|
|
GST_INFO_OBJECT (vagg, "Input pad %" GST_PTR_FORMAT
|
|
" w %u h %u", pad, this_width, this_height);
|
|
|
|
if (this_width == 0 || this_height == 0)
|
|
continue;
|
|
|
|
if (best_width < this_width)
|
|
best_width = this_width;
|
|
if (best_height < this_height)
|
|
best_height = this_height;
|
|
|
|
if (fps_d == 0)
|
|
cur_fps = 0.0;
|
|
else
|
|
gst_util_fraction_to_double (fps_n, fps_d, &cur_fps);
|
|
|
|
if (best_fps < cur_fps) {
|
|
best_fps = cur_fps;
|
|
best_fps_n = fps_n;
|
|
best_fps_d = fps_d;
|
|
}
|
|
|
|
/* FIXME: Preserve PAR for at least one input when different sized inputs */
|
|
}
|
|
GST_OBJECT_UNLOCK (vagg);
|
|
|
|
mix_info = &mix->mix_info;
|
|
gst_video_info_set_format (mix_info, GST_VIDEO_FORMAT_RGBA, best_width,
|
|
best_height);
|
|
|
|
GST_VIDEO_INFO_FPS_N (mix_info) = best_fps_n;
|
|
GST_VIDEO_INFO_FPS_D (mix_info) = best_fps_d;
|
|
|
|
GST_VIDEO_INFO_MULTIVIEW_MODE (mix_info) = GST_VIDEO_MULTIVIEW_MODE_SEPARATED;
|
|
GST_VIDEO_INFO_VIEWS (mix_info) = 2;
|
|
|
|
/* FIXME: If input is marked as flipped or flopped, preserve those flags */
|
|
GST_VIDEO_INFO_MULTIVIEW_FLAGS (mix_info) = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
|
|
|
|
/* Choose our output format based on downstream preferences */
|
|
blend_caps = gst_video_info_to_caps (mix_info);
|
|
|
|
gst_caps_set_features (blend_caps, 0,
|
|
gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY));
|
|
|
|
tmp_caps = get_converted_caps (GST_GL_STEREO_MIX (vagg), blend_caps);
|
|
gst_caps_unref (blend_caps);
|
|
|
|
out_caps = gst_caps_intersect (caps, tmp_caps);
|
|
gst_caps_unref (tmp_caps);
|
|
|
|
GST_DEBUG_OBJECT (vagg, "Possible output caps %" GST_PTR_FORMAT, out_caps);
|
|
|
|
return out_caps;
|
|
}
|
|
|
|
/* Called after videoaggregator fixates our caps */
|
|
static gboolean
|
|
_negotiated_caps (GstAggregator * agg, GstCaps * caps)
|
|
{
|
|
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
|
|
GstGLStereoMix *mix = GST_GL_STEREO_MIX (vagg);
|
|
GstCaps *in_caps;
|
|
|
|
GST_LOG_OBJECT (mix, "Configured output caps %" GST_PTR_FORMAT, caps);
|
|
|
|
if (GST_AGGREGATOR_CLASS (parent_class)->negotiated_src_caps)
|
|
if (!GST_AGGREGATOR_CLASS (parent_class)->negotiated_src_caps (agg, caps))
|
|
return FALSE;
|
|
|
|
/* Update the glview_convert output */
|
|
|
|
/* We can configure the view_converter now */
|
|
gst_gl_view_convert_set_context (mix->viewconvert,
|
|
GST_GL_BASE_MIXER (mix)->context);
|
|
|
|
in_caps = gst_video_info_to_caps (&mix->mix_info);
|
|
gst_caps_set_features (in_caps, 0,
|
|
gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY));
|
|
gst_caps_set_simple (in_caps, "texture-target", G_TYPE_STRING,
|
|
GST_GL_TEXTURE_TARGET_2D_STR, NULL);
|
|
|
|
gst_gl_view_convert_set_caps (mix->viewconvert, in_caps, caps);
|
|
gst_caps_unref (in_caps);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* called with the object lock held */
|
|
static gboolean
|
|
gst_gl_stereo_mix_process_frames (GstGLStereoMix * mixer)
|
|
{
|
|
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mixer);
|
|
GstBuffer *converted_buffer, *inbuf;
|
|
GstVideoInfo *out_info = &vagg->info;
|
|
#ifndef G_DISABLE_ASSERT
|
|
gint n;
|
|
#endif
|
|
gint v, views;
|
|
gint valid_views = 0;
|
|
GList *walk;
|
|
|
|
inbuf = gst_buffer_new ();
|
|
walk = GST_ELEMENT (mixer)->sinkpads;
|
|
while (walk) {
|
|
GstGLStereoMixPad *pad = walk->data;
|
|
GstMemory *in_mem;
|
|
|
|
GST_LOG_OBJECT (mixer, "Handling frame %d", valid_views);
|
|
|
|
if (!pad || !pad->current_buffer) {
|
|
GST_DEBUG ("skipping texture, null frame");
|
|
walk = g_list_next (walk);
|
|
continue;
|
|
}
|
|
|
|
in_mem = gst_buffer_get_memory (pad->current_buffer, 0);
|
|
|
|
GST_LOG_OBJECT (mixer,
|
|
"Appending memory %" GST_PTR_FORMAT " to intermediate buffer", in_mem);
|
|
/* Appending the memory to a 2nd buffer locks it
|
|
* exclusive a 2nd time, which will mark it for
|
|
* copy-on-write. The ref will keep the memory
|
|
* alive but we add a parent_buffer_meta to also
|
|
* prevent the input buffer from returning to any buffer
|
|
* pool it might belong to
|
|
*/
|
|
gst_buffer_append_memory (inbuf, in_mem);
|
|
/* Use parent buffer meta to keep input buffer alive */
|
|
gst_buffer_add_parent_buffer_meta (inbuf, pad->current_buffer);
|
|
|
|
valid_views++;
|
|
walk = g_list_next (walk);
|
|
}
|
|
|
|
if (mixer->mix_info.views != valid_views) {
|
|
GST_WARNING_OBJECT (mixer, "Not enough input views to process");
|
|
return FALSE;
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) ==
|
|
GST_VIDEO_MULTIVIEW_MODE_SEPARATED)
|
|
views = out_info->views;
|
|
else
|
|
views = 1;
|
|
|
|
/* We can configure the view_converter now */
|
|
gst_gl_view_convert_set_context (mixer->viewconvert,
|
|
GST_GL_BASE_MIXER (mixer)->context);
|
|
|
|
if (gst_gl_view_convert_submit_input_buffer (mixer->viewconvert,
|
|
FALSE, inbuf) != GST_FLOW_OK)
|
|
return FALSE;
|
|
|
|
/* Clear any existing buffers, just in case */
|
|
gst_buffer_replace (&mixer->primary_out, NULL);
|
|
gst_buffer_replace (&mixer->auxilliary_out, NULL);
|
|
|
|
if (gst_gl_view_convert_get_output (mixer->viewconvert,
|
|
&mixer->primary_out) != GST_FLOW_OK)
|
|
return FALSE;
|
|
|
|
if (GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) ==
|
|
GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) {
|
|
if (gst_gl_view_convert_get_output (mixer->viewconvert,
|
|
&mixer->auxilliary_out) != GST_FLOW_OK)
|
|
return FALSE;
|
|
}
|
|
|
|
if (mixer->primary_out == NULL)
|
|
return FALSE;
|
|
|
|
converted_buffer = mixer->primary_out;
|
|
|
|
#ifndef G_DISABLE_ASSERT
|
|
n = gst_buffer_n_memory (converted_buffer);
|
|
g_assert (n == GST_VIDEO_INFO_N_PLANES (out_info) * views);
|
|
#endif
|
|
|
|
for (v = 0; v < views; v++) {
|
|
gst_buffer_add_video_meta_full (converted_buffer, v,
|
|
GST_VIDEO_INFO_FORMAT (out_info),
|
|
GST_VIDEO_INFO_WIDTH (out_info),
|
|
GST_VIDEO_INFO_HEIGHT (out_info),
|
|
GST_VIDEO_INFO_N_PLANES (out_info), out_info->offset, out_info->stride);
|
|
if (mixer->auxilliary_out) {
|
|
gst_buffer_add_video_meta_full (mixer->auxilliary_out, v,
|
|
GST_VIDEO_INFO_FORMAT (out_info),
|
|
GST_VIDEO_INFO_WIDTH (out_info),
|
|
GST_VIDEO_INFO_HEIGHT (out_info),
|
|
GST_VIDEO_INFO_N_PLANES (out_info), out_info->offset,
|
|
out_info->stride);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* GstChildProxy implementation */
|
|
static GObject *
|
|
gst_gl_stereo_mix_child_proxy_get_child_by_index (GstChildProxy * child_proxy,
|
|
guint index)
|
|
{
|
|
GstGLStereoMix *gl_stereo_mix = GST_GL_STEREO_MIX (child_proxy);
|
|
GObject *obj = NULL;
|
|
|
|
GST_OBJECT_LOCK (gl_stereo_mix);
|
|
obj = g_list_nth_data (GST_ELEMENT_CAST (gl_stereo_mix)->sinkpads, index);
|
|
if (obj)
|
|
gst_object_ref (obj);
|
|
GST_OBJECT_UNLOCK (gl_stereo_mix);
|
|
|
|
return obj;
|
|
}
|
|
|
|
static guint
|
|
gst_gl_stereo_mix_child_proxy_get_children_count (GstChildProxy * child_proxy)
|
|
{
|
|
guint count = 0;
|
|
GstGLStereoMix *gl_stereo_mix = GST_GL_STEREO_MIX (child_proxy);
|
|
|
|
GST_OBJECT_LOCK (gl_stereo_mix);
|
|
count = GST_ELEMENT_CAST (gl_stereo_mix)->numsinkpads;
|
|
GST_OBJECT_UNLOCK (gl_stereo_mix);
|
|
GST_INFO_OBJECT (gl_stereo_mix, "Children Count: %d", count);
|
|
|
|
return count;
|
|
}
|
|
|
|
static void
|
|
gst_gl_stereo_mix_child_proxy_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstChildProxyInterface *iface = g_iface;
|
|
|
|
iface->get_child_by_index = gst_gl_stereo_mix_child_proxy_get_child_by_index;
|
|
iface->get_children_count = gst_gl_stereo_mix_child_proxy_get_children_count;
|
|
}
|