mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Found running `gst-inspect-1.0 -a |& grep -v ":" | grep @` Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4682>
877 lines
26 KiB
C
877 lines
26 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 Jan Schmidt <jan@centricular.com>
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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-glstereosplit
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* @title: glstereosplit
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*
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* Receive a stereoscopic video stream and split into left/right
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*
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* ## Examples
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* |[
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* gst-launch-1.0 videotestsrc ! glstereosplit name=s ! queue ! glimagesink s. ! queue ! glimagesink
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* ]|
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* FBO (Frame Buffer Object) and GLSL (OpenGL Shading Language) are required.
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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 "gstglstereosplit.h"
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#define GST_CAT_DEFAULT gst_gl_stereosplit_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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#define SUPPORTED_GL_APIS GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3
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#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_INIT (gst_gl_stereosplit_debug, "glstereosplit", 0, "glstereosplit element");
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G_DEFINE_TYPE_WITH_CODE (GstGLStereoSplit, gst_gl_stereosplit,
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GST_TYPE_ELEMENT, DEBUG_INIT);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (glstereosplit, "glstereosplit",
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GST_RANK_NONE, GST_TYPE_GL_STEREOSPLIT, gl_element_init (plugin));
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "RGBA"))
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);
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static GstStaticPadTemplate src_left_template = GST_STATIC_PAD_TEMPLATE ("left",
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GST_PAD_SRC, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "RGBA"))
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);
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static GstStaticPadTemplate src_right_template =
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GST_STATIC_PAD_TEMPLATE ("right",
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GST_PAD_SRC, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
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"RGBA"))
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);
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static void stereosplit_reset (GstGLStereoSplit * self);
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static void stereosplit_finalize (GstGLStereoSplit * self);
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static void stereosplit_set_context (GstElement * element,
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GstContext * context);
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static GstFlowReturn stereosplit_chain (GstPad * pad, GstGLStereoSplit * split,
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GstBuffer * buf);
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static GstStateChangeReturn stereosplit_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean stereosplit_sink_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean stereosplit_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean stereosplit_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean stereosplit_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean ensure_context (GstGLStereoSplit * self);
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static gboolean ensure_context_unlocked (GstGLStereoSplit * self);
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static void
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gst_gl_stereosplit_class_init (GstGLStereoSplitClass * 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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gst_element_class_set_static_metadata (element_class,
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"GLStereoSplit", "Codec/Converter",
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"Splits a stereoscopic stream into separate left/right streams",
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"Jan Schmidt <jan@centricular.com>, "
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"Matthew Waters <matthew@centricular.com>");
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gobject_class->finalize = (GObjectFinalizeFunc) (stereosplit_finalize);
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element_class->change_state = stereosplit_change_state;
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element_class->set_context = stereosplit_set_context;
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gst_element_class_add_static_pad_template (element_class, &sink_template);
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gst_element_class_add_static_pad_template (element_class, &src_left_template);
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gst_element_class_add_static_pad_template (element_class,
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&src_right_template);
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}
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static void
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gst_gl_stereosplit_init (GstGLStereoSplit * self)
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{
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GstPad *pad;
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pad = self->sink_pad =
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gst_pad_new_from_static_template (&sink_template, "sink");
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gst_pad_set_chain_function (pad, (GstPadChainFunction) (stereosplit_chain));
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gst_pad_set_query_function (pad, stereosplit_sink_query);
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gst_pad_set_event_function (pad, stereosplit_sink_event);
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gst_element_add_pad (GST_ELEMENT (self), self->sink_pad);
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pad = self->left_pad =
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gst_pad_new_from_static_template (&src_left_template, "left");
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gst_pad_set_query_function (pad, stereosplit_src_query);
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gst_pad_set_event_function (pad, stereosplit_src_event);
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gst_element_add_pad (GST_ELEMENT (self), self->left_pad);
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pad = self->right_pad =
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gst_pad_new_from_static_template (&src_right_template, "right");
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gst_pad_set_query_function (pad, stereosplit_src_query);
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gst_pad_set_event_function (pad, stereosplit_src_event);
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gst_element_add_pad (GST_ELEMENT (self), self->right_pad);
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self->viewconvert = gst_gl_view_convert_new ();
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g_rec_mutex_init (&self->context_lock);
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}
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static void
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stereosplit_reset (GstGLStereoSplit * self)
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{
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if (self->context)
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gst_object_replace ((GstObject **) & self->context, NULL);
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if (self->display)
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gst_object_replace ((GstObject **) & self->display, NULL);
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}
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static void
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stereosplit_finalize (GstGLStereoSplit * self)
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{
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GObjectClass *klass = G_OBJECT_CLASS (gst_gl_stereosplit_parent_class);
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if (self->viewconvert)
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gst_object_replace ((GstObject **) & self->viewconvert, NULL);
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g_rec_mutex_clear (&self->context_lock);
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klass->finalize ((GObject *) (self));
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}
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static void
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stereosplit_set_context (GstElement * element, GstContext * context)
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{
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GstGLStereoSplit *stereosplit = GST_GL_STEREOSPLIT (element);
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GstGLDisplay *old_display, *new_display;
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g_rec_mutex_lock (&stereosplit->context_lock);
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GST_DEBUG_OBJECT (element, "set context of %" GST_PTR_FORMAT, context);
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old_display =
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stereosplit->display ? gst_object_ref (stereosplit->display) : NULL;
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gst_gl_handle_set_context (element, context, &stereosplit->display,
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&stereosplit->other_context);
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if (stereosplit->display)
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gst_gl_display_filter_gl_api (stereosplit->display, SUPPORTED_GL_APIS);
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new_display =
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stereosplit->display ? gst_object_ref (stereosplit->display) : NULL;
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if (old_display && new_display) {
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if (old_display != new_display) {
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gst_clear_object (&stereosplit->context);
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gst_gl_view_convert_set_context (stereosplit->viewconvert, NULL);
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GST_INFO_OBJECT (stereosplit, "display changed to %" GST_PTR_FORMAT,
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new_display);
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if (ensure_context_unlocked (stereosplit)) {
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gst_gl_view_convert_set_context (stereosplit->viewconvert,
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stereosplit->context);
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}
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}
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}
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gst_clear_object (&old_display);
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gst_clear_object (&new_display);
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g_rec_mutex_unlock (&stereosplit->context_lock);
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GST_ELEMENT_CLASS (gst_gl_stereosplit_parent_class)->set_context (element,
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context);
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}
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static GstStateChangeReturn
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stereosplit_change_state (GstElement * element, GstStateChange transition)
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{
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GstGLStereoSplit *stereosplit = GST_GL_STEREOSPLIT (element);
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GstStateChangeReturn result;
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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g_rec_mutex_lock (&stereosplit->context_lock);
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if (!gst_gl_ensure_element_data (element, &stereosplit->display,
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&stereosplit->other_context))
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return GST_STATE_CHANGE_FAILURE;
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gst_gl_display_filter_gl_api (stereosplit->display, SUPPORTED_GL_APIS);
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g_rec_mutex_unlock (&stereosplit->context_lock);
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break;
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default:
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break;
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}
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result =
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GST_ELEMENT_CLASS (gst_gl_stereosplit_parent_class)->change_state
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(element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_NULL:
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g_rec_mutex_lock (&stereosplit->context_lock);
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gst_clear_object (&stereosplit->other_context);
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gst_clear_object (&stereosplit->display);
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g_rec_mutex_unlock (&stereosplit->context_lock);
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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stereosplit_reset (stereosplit);
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break;
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default:
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break;
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}
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return result;
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}
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static GstCaps *
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stereosplit_transform_caps (GstGLStereoSplit * self, GstPadDirection direction,
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GstCaps * caps, GstCaps * filter)
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{
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GstCaps *next_caps;
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next_caps =
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gst_gl_view_convert_transform_caps (self->viewconvert, direction, caps,
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NULL);
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return next_caps;
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}
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static GstCaps *
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strip_mview_fields (GstCaps * incaps, GstVideoMultiviewFlags keep_flags)
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{
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GstCaps *outcaps = gst_caps_make_writable (incaps);
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gint i, n;
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n = gst_caps_get_size (outcaps);
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for (i = 0; i < n; i++) {
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GstStructure *st = gst_caps_get_structure (outcaps, i);
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GstVideoMultiviewFlags flags, mask;
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gst_structure_remove_field (st, "multiview-mode");
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if (gst_structure_get_flagset (st, "multiview-flags", (guint *) & flags,
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(guint *) & mask)) {
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flags &= keep_flags;
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mask = keep_flags;
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gst_structure_set (st, "multiview-flags",
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GST_TYPE_VIDEO_MULTIVIEW_FLAGSET, flags, mask, NULL);
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}
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}
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return outcaps;
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}
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static gboolean stereosplit_do_bufferpool (GstGLStereoSplit * self,
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GstCaps * caps);
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static GstCaps *
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stereosplit_get_src_caps (GstGLStereoSplit * split,
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GstPad * pad, GstVideoMultiviewMode preferred_mode)
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{
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GstCaps *outcaps, *tmp, *templ_caps;
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GValue item = G_VALUE_INIT, list = G_VALUE_INIT;
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/* Get the template format */
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templ_caps = gst_pad_get_pad_template_caps (pad);
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/* And limit down to the preferred mode or mono */
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templ_caps = gst_caps_make_writable (templ_caps);
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g_value_init (&item, G_TYPE_STRING);
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g_value_init (&list, GST_TYPE_LIST);
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g_value_set_static_string (&item,
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gst_video_multiview_mode_to_caps_string (preferred_mode));
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gst_value_list_append_value (&list, &item);
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g_value_set_static_string (&item,
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gst_video_multiview_mode_to_caps_string (GST_VIDEO_MULTIVIEW_MODE_MONO));
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gst_value_list_append_value (&list, &item);
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gst_caps_set_value (templ_caps, "multiview-mode", &list);
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g_value_unset (&list);
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g_value_unset (&item);
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/* And intersect with the peer */
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if ((tmp = gst_pad_peer_query_caps (pad, NULL)) == NULL) {
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gst_caps_unref (templ_caps);
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return NULL;
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}
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outcaps = gst_caps_intersect_full (tmp, templ_caps, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (tmp);
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gst_caps_unref (templ_caps);
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GST_DEBUG_OBJECT (split, "Src pad %" GST_PTR_FORMAT " caps %" GST_PTR_FORMAT,
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pad, outcaps);
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return outcaps;
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}
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static gboolean
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stereosplit_set_output_caps (GstGLStereoSplit * split, GstCaps * sinkcaps)
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{
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GstCaps *left = NULL, *right = NULL, *tridcaps = NULL;
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GstCaps *tmp, *combined;
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gboolean res = FALSE;
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/* Choose some preferred output caps.
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* Keep input width/height and PAR, preserve preferred output
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* multiview flags for flipping/flopping if any, and set each
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* left right pad to either left/mono and right/mono, as they prefer
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*/
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if (!ensure_context (split)) {
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res = FALSE;
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goto fail;
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}
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/* Calculate what downstream can collectively support */
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left =
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stereosplit_get_src_caps (split, split->left_pad,
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GST_VIDEO_MULTIVIEW_MODE_LEFT);
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if (left == NULL)
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goto fail;
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right =
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stereosplit_get_src_caps (split, split->right_pad,
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GST_VIDEO_MULTIVIEW_MODE_RIGHT);
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if (right == NULL)
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goto fail;
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tridcaps = stereosplit_transform_caps (split, GST_PAD_SINK, sinkcaps, NULL);
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if (!tridcaps || gst_caps_is_empty (tridcaps)) {
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GST_ERROR_OBJECT (split,
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"Failed to transform input caps %" GST_PTR_FORMAT, sinkcaps);
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goto fail;
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}
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/* Preserve downstream preferred flipping/flopping */
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tmp =
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strip_mview_fields (gst_caps_ref (left),
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GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED |
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GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED);
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combined = gst_caps_intersect (tridcaps, tmp);
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gst_caps_unref (tridcaps);
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gst_caps_unref (tmp);
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tridcaps = combined;
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tmp =
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strip_mview_fields (gst_caps_ref (right),
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GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED |
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GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED);
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combined = gst_caps_intersect (tridcaps, tmp);
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gst_caps_unref (tridcaps);
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gst_caps_unref (tmp);
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tridcaps = combined;
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if (G_UNLIKELY (gst_caps_is_empty (tridcaps))) {
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gst_caps_unref (tridcaps);
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goto fail;
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}
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/* Now generate the version for each output pad */
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GST_DEBUG_OBJECT (split, "Attempting to set output caps %" GST_PTR_FORMAT,
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tridcaps);
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tmp = gst_caps_intersect (tridcaps, left);
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gst_caps_unref (left);
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left = tmp;
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left = gst_caps_fixate (left);
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if (!gst_pad_set_caps (split->left_pad, left)) {
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GST_ERROR_OBJECT (split,
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"Failed to set left output caps %" GST_PTR_FORMAT, left);
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goto fail;
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}
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tmp = gst_caps_intersect (tridcaps, right);
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gst_caps_unref (right);
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right = tmp;
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right = gst_caps_fixate (right);
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if (!gst_pad_set_caps (split->right_pad, right)) {
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GST_ERROR_OBJECT (split,
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"Failed to set right output caps %" GST_PTR_FORMAT, right);
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goto fail;
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}
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/* FIXME: Provide left and right caps to do_bufferpool */
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stereosplit_do_bufferpool (split, left);
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g_rec_mutex_lock (&split->context_lock);
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gst_gl_view_convert_set_context (split->viewconvert, split->context);
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tridcaps = gst_caps_make_writable (tridcaps);
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gst_caps_set_simple (tridcaps, "multiview-mode", G_TYPE_STRING,
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"separated", "views", G_TYPE_INT, 2, NULL);
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tridcaps = gst_caps_fixate (tridcaps);
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if (!gst_gl_view_convert_set_caps (split->viewconvert, sinkcaps, tridcaps)) {
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g_rec_mutex_unlock (&split->context_lock);
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GST_ERROR_OBJECT (split, "Failed to set caps on converter");
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goto fail;
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}
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g_rec_mutex_unlock (&split->context_lock);
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res = TRUE;
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fail:
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if (left)
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gst_caps_unref (left);
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if (right)
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gst_caps_unref (right);
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if (tridcaps)
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gst_caps_unref (tridcaps);
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return res;
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}
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static gboolean
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_find_local_gl_context_unlocked (GstGLStereoSplit * split)
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{
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GstGLContext *context, *prev_context;
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gboolean ret;
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if (split->context && split->context->display == split->display)
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return TRUE;
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|
|
context = prev_context = split->context;
|
|
g_rec_mutex_unlock (&split->context_lock);
|
|
/* we need to drop the lock to query as another element may also be
|
|
* performing a context query on us which would also attempt to take the
|
|
* context_lock. Our query could block on the same lock in the other element.
|
|
*/
|
|
ret =
|
|
gst_gl_query_local_gl_context (GST_ELEMENT (split), GST_PAD_SRC,
|
|
&context);
|
|
g_rec_mutex_lock (&split->context_lock);
|
|
if (ret) {
|
|
if (split->context != prev_context) {
|
|
/* we need to recheck everything since we dropped the lock and the
|
|
* context has changed */
|
|
if (split->context && split->context->display == split->display) {
|
|
if (context != split->context)
|
|
gst_clear_object (&context);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
if (context->display == split->display) {
|
|
split->context = context;
|
|
return TRUE;
|
|
}
|
|
if (context != split->context)
|
|
gst_clear_object (&context);
|
|
}
|
|
|
|
context = prev_context = split->context;
|
|
g_rec_mutex_unlock (&split->context_lock);
|
|
/* we need to drop the lock to query as another element may also be
|
|
* performing a context query on us which would also attempt to take the
|
|
* context_lock. Our query could block on the same lock in the other element.
|
|
*/
|
|
ret =
|
|
gst_gl_query_local_gl_context (GST_ELEMENT (split), GST_PAD_SINK,
|
|
&context);
|
|
g_rec_mutex_lock (&split->context_lock);
|
|
if (ret) {
|
|
if (split->context != prev_context) {
|
|
/* we need to recheck everything now that we dropped the lock */
|
|
if (split->context && split->context->display == split->display) {
|
|
if (context != split->context)
|
|
gst_clear_object (&context);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
if (context->display == split->display) {
|
|
split->context = context;
|
|
return TRUE;
|
|
}
|
|
if (context != split->context)
|
|
gst_clear_object (&context);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
ensure_context_unlocked (GstGLStereoSplit * self)
|
|
{
|
|
GError *error = NULL;
|
|
|
|
GST_DEBUG_OBJECT (self, "attempting to find an OpenGL context, existing %"
|
|
GST_PTR_FORMAT, self->context);
|
|
|
|
if (!gst_gl_ensure_element_data (self, &self->display, &self->other_context))
|
|
return FALSE;
|
|
|
|
gst_gl_display_filter_gl_api (self->display, SUPPORTED_GL_APIS);
|
|
|
|
_find_local_gl_context_unlocked (self);
|
|
|
|
if (!gst_gl_display_ensure_context (self->display, self->other_context,
|
|
&self->context, &error)) {
|
|
goto context_error;
|
|
}
|
|
|
|
{
|
|
GstGLAPI current_gl_api = gst_gl_context_get_gl_api (self->context);
|
|
if ((current_gl_api & (SUPPORTED_GL_APIS)) == 0)
|
|
goto unsupported_gl_api;
|
|
}
|
|
|
|
GST_INFO_OBJECT (self, "found OpenGL context %" GST_PTR_FORMAT,
|
|
self->context);
|
|
|
|
return TRUE;
|
|
|
|
unsupported_gl_api:
|
|
{
|
|
GstGLAPI gl_api = gst_gl_context_get_gl_api (self->context);
|
|
gchar *gl_api_str = gst_gl_api_to_string (gl_api);
|
|
gchar *supported_gl_api_str = gst_gl_api_to_string (SUPPORTED_GL_APIS);
|
|
GST_ELEMENT_ERROR (self, RESOURCE, BUSY,
|
|
("GL API's not compatible context: %s supported: %s", gl_api_str,
|
|
supported_gl_api_str), (NULL));
|
|
|
|
g_free (supported_gl_api_str);
|
|
g_free (gl_api_str);
|
|
return FALSE;
|
|
}
|
|
context_error:
|
|
{
|
|
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND, ("%s", error->message),
|
|
(NULL));
|
|
g_clear_error (&error);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
ensure_context (GstGLStereoSplit * self)
|
|
{
|
|
gboolean ret;
|
|
g_rec_mutex_lock (&self->context_lock);
|
|
ret = ensure_context_unlocked (self);
|
|
g_rec_mutex_unlock (&self->context_lock);
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_decide_allocation (GstGLStereoSplit * self, GstQuery * query)
|
|
{
|
|
if (!ensure_context_unlocked (self))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_propose_allocation (GstGLStereoSplit * self, GstQuery * query)
|
|
{
|
|
if (!gst_gl_ensure_element_data (self, &self->display, &self->other_context))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_do_bufferpool (GstGLStereoSplit * self, GstCaps * caps)
|
|
{
|
|
GstQuery *query;
|
|
|
|
query = gst_query_new_allocation (caps, TRUE);
|
|
if (!gst_pad_peer_query (self->left_pad, query)) {
|
|
if (!gst_pad_peer_query (self->right_pad, query)) {
|
|
GST_DEBUG_OBJECT (self, "peer ALLOCATION query failed on both src pads");
|
|
}
|
|
}
|
|
|
|
if (!stereosplit_decide_allocation (self, query)) {
|
|
gst_query_unref (query);
|
|
return FALSE;
|
|
}
|
|
|
|
gst_query_unref (query);
|
|
return TRUE;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
stereosplit_chain (GstPad * pad, GstGLStereoSplit * split, GstBuffer * buf)
|
|
{
|
|
GstBuffer *left, *right;
|
|
GstBuffer *split_buffer = NULL;
|
|
GstFlowReturn ret;
|
|
gint i, n_planes;
|
|
|
|
n_planes = GST_VIDEO_INFO_N_PLANES (&split->viewconvert->out_info);
|
|
|
|
GST_LOG_OBJECT (split, "chaining buffer %" GST_PTR_FORMAT, buf);
|
|
|
|
gst_buffer_ref (buf);
|
|
|
|
g_rec_mutex_lock (&split->context_lock);
|
|
|
|
if (gst_gl_view_convert_submit_input_buffer (split->viewconvert,
|
|
GST_BUFFER_IS_DISCONT (buf), buf) != GST_FLOW_OK) {
|
|
g_rec_mutex_unlock (&split->context_lock);
|
|
GST_ELEMENT_ERROR (split, RESOURCE, NOT_FOUND, ("%s",
|
|
"Failed to 3d convert buffer"),
|
|
("Could not get submit input buffer"));
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
ret = gst_gl_view_convert_get_output (split->viewconvert, &split_buffer);
|
|
g_rec_mutex_unlock (&split->context_lock);
|
|
if (ret != GST_FLOW_OK) {
|
|
GST_ELEMENT_ERROR (split, RESOURCE, NOT_FOUND, ("%s",
|
|
"Failed to 3d convert buffer"), ("Could not get output buffer"));
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
if (split_buffer == NULL) {
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_OK; /* Need another input buffer */
|
|
}
|
|
|
|
left = gst_buffer_new ();
|
|
gst_buffer_copy_into (left, buf,
|
|
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
|
|
GST_BUFFER_FLAG_UNSET (left, GST_VIDEO_BUFFER_FLAG_FIRST_IN_BUNDLE);
|
|
|
|
gst_buffer_add_parent_buffer_meta (left, split_buffer);
|
|
|
|
for (i = 0; i < n_planes; i++) {
|
|
GstMemory *mem = gst_buffer_get_memory (split_buffer, i);
|
|
gst_buffer_append_memory (left, mem);
|
|
}
|
|
|
|
ret = gst_pad_push (split->left_pad, gst_buffer_ref (left));
|
|
/* Allow unlinked on the first pad - as long as the 2nd isn't unlinked */
|
|
gst_buffer_unref (left);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)) {
|
|
gst_buffer_unref (split_buffer);
|
|
gst_buffer_unref (buf);
|
|
return ret;
|
|
}
|
|
|
|
right = gst_buffer_new ();
|
|
gst_buffer_copy_into (right, buf,
|
|
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
|
|
GST_BUFFER_FLAG_UNSET (left, GST_VIDEO_BUFFER_FLAG_FIRST_IN_BUNDLE);
|
|
gst_buffer_add_parent_buffer_meta (right, split_buffer);
|
|
for (i = n_planes; i < n_planes * 2; i++) {
|
|
GstMemory *mem = gst_buffer_get_memory (split_buffer, i);
|
|
gst_buffer_append_memory (right, mem);
|
|
}
|
|
|
|
ret = gst_pad_push (split->right_pad, gst_buffer_ref (right));
|
|
gst_buffer_unref (right);
|
|
gst_buffer_unref (split_buffer);
|
|
gst_buffer_unref (buf);
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstGLStereoSplit *split = GST_GL_STEREOSPLIT (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CONTEXT:
|
|
{
|
|
GstGLDisplay *display = NULL;
|
|
GstGLContext *other = NULL, *local = NULL;
|
|
gboolean ret;
|
|
|
|
g_rec_mutex_lock (&split->context_lock);
|
|
if (split->display)
|
|
display = gst_object_ref (split->display);
|
|
if (split->context)
|
|
local = gst_object_ref (split->context);
|
|
if (split->other_context)
|
|
other = gst_object_ref (split->other_context);
|
|
g_rec_mutex_unlock (&split->context_lock);
|
|
|
|
ret = gst_gl_handle_context_query ((GstElement *) split, query,
|
|
display, local, other);
|
|
|
|
gst_clear_object (&display);
|
|
gst_clear_object (&other);
|
|
gst_clear_object (&local);
|
|
if (ret)
|
|
return TRUE;
|
|
|
|
return gst_pad_query_default (pad, parent, query);
|
|
}
|
|
/* FIXME: Handle caps query */
|
|
default:
|
|
return gst_pad_query_default (pad, parent, query);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
return gst_pad_event_default (pad, parent, event);
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstGLStereoSplit *split = GST_GL_STEREOSPLIT (parent);
|
|
|
|
GST_DEBUG_OBJECT (split, "sink query %s",
|
|
gst_query_type_get_name (GST_QUERY_TYPE (query)));
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CONTEXT:
|
|
{
|
|
GstGLDisplay *display = NULL;
|
|
GstGLContext *other = NULL, *local = NULL;
|
|
gboolean ret;
|
|
|
|
g_rec_mutex_lock (&split->context_lock);
|
|
if (split->display)
|
|
display = gst_object_ref (split->display);
|
|
if (split->context)
|
|
local = gst_object_ref (split->context);
|
|
if (split->other_context)
|
|
other = gst_object_ref (split->other_context);
|
|
g_rec_mutex_unlock (&split->context_lock);
|
|
|
|
ret = gst_gl_handle_context_query ((GstElement *) split, query,
|
|
display, local, other);
|
|
|
|
gst_clear_object (&display);
|
|
gst_clear_object (&other);
|
|
gst_clear_object (&local);
|
|
if (ret)
|
|
return TRUE;
|
|
|
|
return gst_pad_query_default (pad, parent, query);
|
|
}
|
|
case GST_QUERY_ALLOCATION:
|
|
{
|
|
return stereosplit_propose_allocation (split, query);
|
|
}
|
|
case GST_QUERY_ACCEPT_CAPS:
|
|
{
|
|
GstCaps *possible, *caps;
|
|
gboolean allowed;
|
|
|
|
gst_query_parse_accept_caps (query, &caps);
|
|
|
|
if (!(possible = gst_pad_query_caps (split->sink_pad, caps)))
|
|
return FALSE;
|
|
|
|
allowed = gst_caps_is_subset (caps, possible);
|
|
gst_caps_unref (possible);
|
|
|
|
gst_query_set_accept_caps_result (query, allowed);
|
|
return allowed;
|
|
}
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GstCaps *filter, *left, *right, *combined, *ret, *templ_caps;
|
|
gboolean result;
|
|
|
|
gst_query_parse_caps (query, &filter);
|
|
|
|
/* Calculate what downstream can collectively support */
|
|
if (!(left = gst_pad_peer_query_caps (split->left_pad, NULL)))
|
|
return FALSE;
|
|
if (!(right = gst_pad_peer_query_caps (split->right_pad, NULL)))
|
|
return FALSE;
|
|
|
|
/* Strip out multiview mode and flags that might break the
|
|
* intersection, since we can convert.
|
|
* We could keep downstream preferred flip/flopping and list
|
|
* separated as preferred in the future which might
|
|
* theoretically allow us an easier conversion, but it's not essential
|
|
*/
|
|
left = strip_mview_fields (left, GST_VIDEO_MULTIVIEW_FLAGS_NONE);
|
|
right = strip_mview_fields (right, GST_VIDEO_MULTIVIEW_FLAGS_NONE);
|
|
|
|
combined = gst_caps_intersect (left, right);
|
|
gst_caps_unref (left);
|
|
gst_caps_unref (right);
|
|
|
|
/* Intersect peer caps with our template formats */
|
|
templ_caps = gst_pad_get_pad_template_caps (split->left_pad);
|
|
ret =
|
|
gst_caps_intersect_full (combined, templ_caps,
|
|
GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (templ_caps);
|
|
|
|
gst_caps_unref (combined);
|
|
combined = ret;
|
|
|
|
if (!combined || gst_caps_is_empty (combined)) {
|
|
gst_caps_unref (combined);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Convert from the src pad caps to input formats we support */
|
|
ret = stereosplit_transform_caps (split, GST_PAD_SRC, combined, filter);
|
|
gst_caps_unref (combined);
|
|
combined = ret;
|
|
|
|
/* Intersect with the sink pad template then */
|
|
templ_caps = gst_pad_get_pad_template_caps (split->sink_pad);
|
|
ret =
|
|
gst_caps_intersect_full (combined, templ_caps,
|
|
GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (templ_caps);
|
|
gst_caps_unref (combined);
|
|
|
|
GST_LOG_OBJECT (split, "Returning sink pad caps %" GST_PTR_FORMAT, ret);
|
|
|
|
gst_query_set_caps_result (query, ret);
|
|
result = !gst_caps_is_empty (ret);
|
|
gst_caps_unref (ret);
|
|
return result;
|
|
}
|
|
default:
|
|
return gst_pad_query_default (pad, parent, query);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
stereosplit_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstGLStereoSplit *split = GST_GL_STEREOSPLIT (parent);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
|
|
return stereosplit_set_output_caps (split, caps);
|
|
}
|
|
default:
|
|
return gst_pad_event_default (pad, parent, event);
|
|
}
|
|
}
|