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760 lines
20 KiB
C
760 lines
20 KiB
C
/* Generic video mixer plugin
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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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*
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <string.h>
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#include "gstglmixer.h"
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#define GST_CAT_DEFAULT gst_gl_mixer_debug
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GST_DEBUG_CATEGORY (gst_gl_mixer_debug);
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static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static gboolean gst_gl_mixer_pad_prepare_frame (GstVideoAggregatorPad * vpad,
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GstVideoAggregator * vagg, GstBuffer * buffer,
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GstVideoFrame * prepared_frame);
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static void gst_gl_mixer_pad_clean_frame (GstVideoAggregatorPad * vpad,
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GstVideoAggregator * vagg, GstVideoFrame * prepared_frame);
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enum
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{
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PROP_PAD_0
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};
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struct _GstGLMixerPrivate
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{
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gboolean negotiated;
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gboolean gl_resource_ready;
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GMutex gl_resource_lock;
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GCond gl_resource_cond;
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};
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#define gst_gl_mixer_parent_class parent_class
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G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GstGLMixer, gst_gl_mixer,
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GST_TYPE_GL_BASE_MIXER);
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G_DEFINE_TYPE (GstGLMixerPad, gst_gl_mixer_pad, GST_TYPE_GL_BASE_MIXER_PAD);
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static void
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gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstVideoAggregatorPadClass *vaggpad_class =
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(GstVideoAggregatorPadClass *) klass;
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gobject_class->set_property = gst_gl_mixer_pad_set_property;
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gobject_class->get_property = gst_gl_mixer_pad_get_property;
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vaggpad_class->prepare_frame = gst_gl_mixer_pad_prepare_frame;
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vaggpad_class->clean_frame = gst_gl_mixer_pad_clean_frame;
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}
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static void
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gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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switch (prop_id) {
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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_mixer_pad_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (prop_id) {
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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 gboolean
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gst_gl_mixer_pad_prepare_frame (GstVideoAggregatorPad * vpad,
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GstVideoAggregator * vagg, GstBuffer * buffer,
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GstVideoFrame * prepared_frame)
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{
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GstGLMixerPad *pad = GST_GL_MIXER_PAD (vpad);
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GstGLMixer *mix = GST_GL_MIXER (vagg);
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GstVideoInfo gl_info;
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GstGLSyncMeta *sync_meta;
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pad->current_texture = 0;
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gst_video_info_set_format (&gl_info,
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GST_VIDEO_FORMAT_RGBA,
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GST_VIDEO_INFO_WIDTH (&vpad->info), GST_VIDEO_INFO_HEIGHT (&vpad->info));
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sync_meta = gst_buffer_get_gl_sync_meta (buffer);
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if (sync_meta)
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gst_gl_sync_meta_wait (sync_meta, GST_GL_BASE_MIXER (mix)->context);
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if (!gst_video_frame_map (prepared_frame, &gl_info, buffer,
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GST_MAP_READ | GST_MAP_GL)) {
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GST_ERROR_OBJECT (pad, "Failed to map input frame");
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return FALSE;
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}
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pad->current_texture = *(guint *) prepared_frame->data[0];
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return TRUE;
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}
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static void
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gst_gl_mixer_pad_clean_frame (GstVideoAggregatorPad * vpad,
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GstVideoAggregator * vagg, GstVideoFrame * prepared_frame)
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{
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GstGLMixerPad *pad = GST_GL_MIXER_PAD (vpad);
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pad->current_texture = 0;
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if (prepared_frame->buffer) {
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gst_video_frame_unmap (prepared_frame);
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memset (prepared_frame, 0, sizeof (GstVideoFrame));
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}
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}
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static gboolean
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_negotiated_caps (GstAggregator * agg, GstCaps * caps)
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{
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GstGLMixer *mix = GST_GL_MIXER (agg);
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gboolean ret;
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mix->priv->negotiated = TRUE;
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gst_caps_replace (&mix->out_caps, caps);
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ret = GST_AGGREGATOR_CLASS (parent_class)->negotiated_src_caps (agg, caps);
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return ret;
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}
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static void
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_find_best_format (GstVideoAggregator * vagg, GstCaps * downstream_caps,
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GstVideoInfo * best_info, gboolean * at_least_one_alpha)
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{
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GstVideoInfo tmp_info;
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GST_VIDEO_AGGREGATOR_CLASS (parent_class)->find_best_format (vagg,
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downstream_caps, best_info, at_least_one_alpha);
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gst_video_info_set_format (&tmp_info, GST_VIDEO_FORMAT_RGBA,
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best_info->width, best_info->height);
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tmp_info.par_n = best_info->par_n;
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tmp_info.par_d = best_info->par_d;
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tmp_info.fps_n = best_info->fps_n;
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tmp_info.fps_d = best_info->fps_d;
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tmp_info.flags = best_info->flags;
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tmp_info.interlace_mode = best_info->interlace_mode;
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*best_info = tmp_info;
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}
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static gboolean
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gst_gl_mixer_propose_allocation (GstAggregator * agg,
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GstAggregatorPad * agg_pad, GstQuery * decide_query, GstQuery * query)
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{
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GstGLMixer *mix = GST_GL_MIXER (agg);
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GstGLBaseMixer *base_mix = GST_GL_BASE_MIXER (agg);
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GstGLContext *context;
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GstBufferPool *pool = NULL;
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GstStructure *config;
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GstCaps *caps;
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GstVideoInfo info;
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guint size = 0;
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gboolean need_pool;
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if (!GST_AGGREGATOR_CLASS (gst_gl_mixer_parent_class)->propose_allocation
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(agg, agg_pad, decide_query, query))
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return FALSE;
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context = base_mix->context;
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gst_query_parse_allocation (query, &caps, &need_pool);
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if (caps == NULL)
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goto no_caps;
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if (!gst_video_info_from_caps (&info, caps))
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goto invalid_caps;
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/* the normal size of a frame */
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size = info.size;
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if (need_pool) {
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GST_DEBUG_OBJECT (mix, "create new pool");
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pool = gst_gl_buffer_pool_new (context);
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
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if (!gst_buffer_pool_set_config (pool, config)) {
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g_object_unref (pool);
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goto config_failed;
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}
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}
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gst_query_add_allocation_pool (query, pool, size, 1, 0);
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if (pool)
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g_object_unref (pool);
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/* we also support various metadata */
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if (context->gl_vtable->FenceSync)
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gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
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return TRUE;
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/* ERRORS */
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no_caps:
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{
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GST_DEBUG_OBJECT (mix, "no caps specified");
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return FALSE;
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}
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invalid_caps:
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{
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GST_DEBUG_OBJECT (mix, "invalid caps specified");
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return FALSE;
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}
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config_failed:
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{
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GST_DEBUG_OBJECT (mix, "failed setting config");
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return FALSE;
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}
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}
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static gboolean
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gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
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GstCaps * caps)
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{
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gboolean ret;
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GstCaps *template_caps;
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GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
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template_caps = gst_pad_get_pad_template_caps (pad);
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template_caps = gst_caps_make_writable (template_caps);
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ret = gst_caps_can_intersect (caps, template_caps);
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GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
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(ret ? "" : "not "), caps);
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gst_caps_unref (template_caps);
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return ret;
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}
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static GstCaps *
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gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
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{
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GstCaps *sinkcaps;
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GstCaps *template_caps;
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GstCaps *filtered_caps;
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GstCaps *returned_caps;
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template_caps = gst_pad_get_pad_template_caps (pad);
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sinkcaps = gst_pad_get_current_caps (pad);
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if (sinkcaps == NULL) {
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sinkcaps = gst_caps_ref (template_caps);
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} else {
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sinkcaps = gst_caps_merge (sinkcaps, gst_caps_ref (template_caps));
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}
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if (filter) {
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filtered_caps = gst_caps_intersect (sinkcaps, filter);
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gst_caps_unref (sinkcaps);
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} else {
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filtered_caps = sinkcaps; /* pass ownership */
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}
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returned_caps = gst_caps_intersect (filtered_caps, template_caps);
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gst_caps_unref (template_caps);
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gst_caps_unref (filtered_caps);
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GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
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return returned_caps;
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}
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static gboolean
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gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
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GstQuery * query)
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{
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gboolean ret = FALSE;
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GstGLMixer *mix = GST_GL_MIXER (agg);
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GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CAPS:
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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_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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ret = TRUE;
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break;
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}
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case GST_QUERY_ACCEPT_CAPS:
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{
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GstCaps *caps;
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gst_query_parse_accept_caps (query, &caps);
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ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
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gst_query_set_accept_caps_result (query, ret);
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ret = TRUE;
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break;
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}
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default:
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ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
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break;
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}
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return ret;
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}
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static void
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gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
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{
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}
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/* GLMixer 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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};
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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_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 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_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 gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
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static gboolean gst_gl_mixer_stop (GstAggregator * agg);
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static gboolean gst_gl_mixer_start (GstAggregator * agg);
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static GstFlowReturn
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gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
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GstBuffer * outbuffer);
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static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_gl_mixer_decide_allocation (GstAggregator * agg,
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GstQuery * query);
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static gboolean gst_gl_mixer_gl_start (GstGLBaseMixer * mix);
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static void gst_gl_mixer_gl_stop (GstGLBaseMixer * mix);
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static void gst_gl_mixer_finalize (GObject * object);
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static void
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gst_gl_mixer_class_init (GstGLMixerClass * 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_class = (GstGLBaseMixerClass *) klass;
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "OpenGL mixer");
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
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gobject_class->get_property = gst_gl_mixer_get_property;
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gobject_class->set_property = gst_gl_mixer_set_property;
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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_MIXER_PAD);
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agg_class->sink_query = gst_gl_mixer_sink_query;
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agg_class->src_query = gst_gl_mixer_src_query;
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agg_class->stop = gst_gl_mixer_stop;
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agg_class->start = gst_gl_mixer_start;
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agg_class->negotiated_src_caps = _negotiated_caps;
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agg_class->decide_allocation = gst_gl_mixer_decide_allocation;
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agg_class->propose_allocation = gst_gl_mixer_propose_allocation;
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videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
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videoaggregator_class->find_best_format = _find_best_format;
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base_class->gl_start = gst_gl_mixer_gl_start;
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base_class->gl_stop = gst_gl_mixer_gl_stop;
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/* Register the pad class */
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g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
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klass->set_caps = NULL;
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gst_type_mark_as_plugin_api (GST_TYPE_GL_MIXER_PAD, 0);
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gst_type_mark_as_plugin_api (GST_TYPE_GL_MIXER, 0);
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}
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static void
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gst_gl_mixer_reset (GstGLMixer * mix)
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{
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mix->priv->negotiated = FALSE;
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}
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static void
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gst_gl_mixer_init (GstGLMixer * mix)
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{
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mix->priv = gst_gl_mixer_get_instance_private (mix);
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mix->priv->gl_resource_ready = FALSE;
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g_mutex_init (&mix->priv->gl_resource_lock);
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g_cond_init (&mix->priv->gl_resource_cond);
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/* initialize variables */
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gst_gl_mixer_reset (mix);
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}
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static void
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gst_gl_mixer_finalize (GObject * object)
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{
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GstGLMixer *mix = GST_GL_MIXER (object);
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GstGLMixerPrivate *priv = mix->priv;
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if (mix->out_caps)
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gst_caps_unref (mix->out_caps);
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g_mutex_clear (&priv->gl_resource_lock);
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g_cond_clear (&priv->gl_resource_cond);
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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_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
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{
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GstCaps *filter, *current_caps, *retcaps, *template_caps;
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gst_query_parse_caps (query, &filter);
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|
|
template_caps = gst_pad_get_pad_template_caps (agg->srcpad);
|
|
|
|
current_caps = gst_pad_get_current_caps (pad);
|
|
if (current_caps == NULL)
|
|
retcaps = gst_caps_ref (template_caps);
|
|
else {
|
|
retcaps = gst_caps_merge (current_caps, template_caps);
|
|
template_caps = NULL;
|
|
}
|
|
|
|
if (filter) {
|
|
current_caps =
|
|
gst_caps_intersect_full (filter, retcaps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (retcaps);
|
|
retcaps = current_caps;
|
|
}
|
|
|
|
gst_query_set_caps_result (query, retcaps);
|
|
gst_caps_unref (retcaps);
|
|
|
|
if (template_caps)
|
|
gst_caps_unref (template_caps);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
|
|
{
|
|
gboolean res = FALSE;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
|
|
break;
|
|
default:
|
|
res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
_mixer_create_fbo (GstGLContext * context, GstGLMixer * mix)
|
|
{
|
|
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
|
|
guint out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
|
|
guint out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
|
|
|
|
mix->fbo =
|
|
gst_gl_framebuffer_new_with_default_depth (context, out_width,
|
|
out_height);
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_gl_start (GstGLBaseMixer * base_mix)
|
|
{
|
|
return GST_GL_BASE_MIXER_CLASS (parent_class)->gl_start (base_mix);
|
|
}
|
|
|
|
static void
|
|
gst_gl_mixer_gl_stop (GstGLBaseMixer * base_mix)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (base_mix);
|
|
GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
|
|
if (mixer_class->reset)
|
|
mixer_class->reset (mix);
|
|
|
|
g_mutex_lock (&mix->priv->gl_resource_lock);
|
|
gst_clear_object (&mix->fbo);
|
|
g_mutex_unlock (&mix->priv->gl_resource_lock);
|
|
|
|
GST_GL_BASE_MIXER_CLASS (parent_class)->gl_stop (base_mix);
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_decide_allocation (GstAggregator * agg, GstQuery * query)
|
|
{
|
|
GstGLBaseMixer *base_mix = GST_GL_BASE_MIXER (agg);
|
|
GstGLMixer *mix = GST_GL_MIXER (base_mix);
|
|
GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
GstGLContext *context;
|
|
GstBufferPool *pool = NULL;
|
|
GstStructure *config;
|
|
GstCaps *caps;
|
|
guint min, max, size;
|
|
gboolean update_pool;
|
|
|
|
if (!GST_AGGREGATOR_CLASS (gst_gl_mixer_parent_class)->decide_allocation (agg,
|
|
query))
|
|
return FALSE;
|
|
|
|
context = gst_gl_base_mixer_get_gl_context (base_mix);
|
|
if (!context) {
|
|
GST_WARNING_OBJECT (agg, "No OpenGL context");
|
|
return FALSE;
|
|
}
|
|
|
|
g_mutex_lock (&mix->priv->gl_resource_lock);
|
|
mix->priv->gl_resource_ready = FALSE;
|
|
if (mix->fbo)
|
|
gst_object_unref (mix->fbo);
|
|
|
|
gst_gl_context_thread_add (context,
|
|
(GstGLContextThreadFunc) _mixer_create_fbo, mix);
|
|
if (!mix->fbo) {
|
|
g_cond_signal (&mix->priv->gl_resource_cond);
|
|
g_mutex_unlock (&mix->priv->gl_resource_lock);
|
|
goto context_error;
|
|
}
|
|
|
|
if (mixer_class->set_caps)
|
|
mixer_class->set_caps (mix, mix->out_caps);
|
|
|
|
mix->priv->gl_resource_ready = TRUE;
|
|
g_cond_signal (&mix->priv->gl_resource_cond);
|
|
g_mutex_unlock (&mix->priv->gl_resource_lock);
|
|
|
|
gst_query_parse_allocation (query, &caps, NULL);
|
|
|
|
if (gst_query_get_n_allocation_pools (query) > 0) {
|
|
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
|
|
|
|
update_pool = TRUE;
|
|
} else {
|
|
GstVideoInfo vinfo;
|
|
|
|
gst_video_info_init (&vinfo);
|
|
gst_video_info_from_caps (&vinfo, caps);
|
|
size = vinfo.size;
|
|
min = max = 0;
|
|
update_pool = FALSE;
|
|
}
|
|
|
|
if (!pool)
|
|
pool = gst_gl_buffer_pool_new (context);
|
|
config = gst_buffer_pool_get_config (pool);
|
|
|
|
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
|
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
|
|
|
|
gst_buffer_pool_set_config (pool, config);
|
|
|
|
if (update_pool)
|
|
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
|
|
else
|
|
gst_query_add_allocation_pool (query, pool, size, min, max);
|
|
|
|
gst_object_unref (pool);
|
|
|
|
gst_clear_object (&context);
|
|
|
|
return TRUE;
|
|
|
|
context_error:
|
|
{
|
|
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("Context error"), (NULL));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
|
|
{
|
|
GstGLMemory *out_tex;
|
|
gboolean res = TRUE;
|
|
GstVideoFrame out_frame;
|
|
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
|
|
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
|
|
GST_TRACE ("Processing buffers");
|
|
|
|
if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf,
|
|
GST_MAP_WRITE | GST_MAP_GL)) {
|
|
return FALSE;
|
|
}
|
|
|
|
out_tex = (GstGLMemory *) out_frame.map[0].memory;
|
|
|
|
g_mutex_lock (&mix->priv->gl_resource_lock);
|
|
if (!mix->priv->gl_resource_ready)
|
|
g_cond_wait (&mix->priv->gl_resource_cond, &mix->priv->gl_resource_lock);
|
|
|
|
if (!mix->priv->gl_resource_ready) {
|
|
g_mutex_unlock (&mix->priv->gl_resource_lock);
|
|
GST_ERROR_OBJECT (mix,
|
|
"fbo used to render can't be created, do not run process_textures");
|
|
res = FALSE;
|
|
goto out;
|
|
}
|
|
|
|
mix_class->process_textures (mix, out_tex);
|
|
|
|
g_mutex_unlock (&mix->priv->gl_resource_lock);
|
|
|
|
out:
|
|
gst_video_frame_unmap (&out_frame);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
|
|
{
|
|
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
|
|
return mix_class->process_buffers (mix, outbuf);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
|
|
{
|
|
GstGLBaseMixer *base_mix = GST_GL_BASE_MIXER (vagg);
|
|
gboolean res = FALSE;
|
|
GstGLMixer *mix = GST_GL_MIXER (vagg);
|
|
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
|
|
GstGLContext *context = gst_gl_base_mixer_get_gl_context (base_mix);
|
|
GstGLSyncMeta *sync_meta;
|
|
|
|
if (!context) {
|
|
GST_DEBUG_OBJECT (vagg, "No OpenGL context, try again later");
|
|
return GST_AGGREGATOR_FLOW_NEED_DATA;
|
|
}
|
|
|
|
if (mix_class->process_buffers)
|
|
res = gst_gl_mixer_process_buffers (mix, outbuf);
|
|
else if (mix_class->process_textures)
|
|
res = gst_gl_mixer_process_textures (mix, outbuf);
|
|
|
|
sync_meta = gst_buffer_get_gl_sync_meta (outbuf);
|
|
if (sync_meta)
|
|
gst_gl_sync_meta_set_sync_point (sync_meta, context);
|
|
|
|
gst_clear_object (&context);
|
|
|
|
return res ? GST_FLOW_OK : GST_FLOW_ERROR;
|
|
}
|
|
|
|
static void
|
|
gst_gl_mixer_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_gl_mixer_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_start (GstAggregator * agg)
|
|
{
|
|
return GST_AGGREGATOR_CLASS (parent_class)->start (agg);
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_stop (GstAggregator * agg)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (agg);
|
|
|
|
gst_gl_mixer_reset (mix);
|
|
|
|
return GST_AGGREGATOR_CLASS (parent_class)->stop (agg);
|
|
}
|