/* Generic video mixer plugin * * GStreamer * Copyright (C) 2009 Julien Isorce * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_STRING_H #include #endif #include "gstglmixer.h" #define GST_CAT_DEFAULT gst_gl_mixer_debug GST_DEBUG_CATEGORY (gst_gl_mixer_debug); #define GST_GL_MIXER_GET_LOCK(mix) \ (GST_GL_MIXER(mix)->lock) #define GST_GL_MIXER_LOCK(mix) \ (g_mutex_lock(&GST_GL_MIXER_GET_LOCK (mix))) #define GST_GL_MIXER_UNLOCK(mix) \ (g_mutex_unlock(&GST_GL_MIXER_GET_LOCK (mix))) static void gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass); static void gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad); static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static gboolean gst_gl_mixer_src_event (GstPad * pad, GstObject * object, GstEvent * event); static gboolean gst_gl_mixer_sink_event (GstCollectPads * pads, GstCollectData * cdata, GstEvent * event, GstGLMixer * mix); static gboolean gst_gl_mixer_src_setcaps (GstPad * pad, GstGLMixer * mix, GstCaps * caps); enum { PROP_PAD_0 }; G_DEFINE_TYPE (GstGLMixerPad, gst_gl_mixer_pad, GST_TYPE_PAD); static void gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; gobject_class->set_property = gst_gl_mixer_pad_set_property; gobject_class->get_property = gst_gl_mixer_pad_get_property; } static void gst_gl_mixer_pad_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_pad_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_update_src_caps (GstGLMixer * mix) { GSList *l; gint best_width = -1, best_height = -1; gdouble best_fps = -1, cur_fps; gint best_fps_n = -1, best_fps_d = -1; gboolean ret = TRUE; GST_GL_MIXER_LOCK (mix); for (l = mix->sinkpads; l; l = l->next) { GstGLMixerPad *mpad = l->data; gint this_width, this_height; gint fps_n, fps_d; gint width, height; fps_n = GST_VIDEO_INFO_FPS_N (&mpad->info); fps_d = GST_VIDEO_INFO_FPS_D (&mpad->info); width = GST_VIDEO_INFO_WIDTH (&mpad->info); height = GST_VIDEO_INFO_HEIGHT (&mpad->info); if (fps_n == 0 || fps_d == 0 || width == 0 || height == 0) continue; this_width = width; this_height = height; 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; } } if (best_fps_n <= 0 && best_fps_d <= 0) { best_fps_n = 25; best_fps_d = 1; best_fps = 25.0; } if (best_width > 0 && best_height > 0 && best_fps > 0) { GstCaps *caps, *peercaps; GstStructure *s; GstVideoInfo info; if (GST_VIDEO_INFO_FPS_N (&mix->info) != best_fps_n || GST_VIDEO_INFO_FPS_D (&mix->info) != best_fps_d) { if (mix->segment.position != -1) { mix->ts_offset = mix->segment.position - mix->segment.start; mix->nframes = 0; } } gst_video_info_set_format (&info, GST_VIDEO_INFO_FORMAT (&mix->info), best_width, best_height); info.fps_n = best_fps_n; info.fps_d = best_fps_d; info.par_n = GST_VIDEO_INFO_PAR_N (&mix->info); info.par_d = GST_VIDEO_INFO_PAR_D (&mix->info); caps = gst_video_info_to_caps (&info); peercaps = gst_pad_peer_query_caps (mix->srcpad, NULL); if (peercaps) { GstCaps *tmp; s = gst_caps_get_structure (caps, 0); gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); tmp = gst_caps_intersect (caps, peercaps); gst_caps_unref (caps); gst_caps_unref (peercaps); caps = tmp; if (gst_caps_is_empty (caps)) { GST_DEBUG_OBJECT (mix, "empty caps"); ret = FALSE; GST_GL_MIXER_UNLOCK (mix); goto done; } caps = gst_caps_truncate (caps); s = gst_caps_get_structure (caps, 0); gst_structure_fixate_field_nearest_int (s, "width", best_width); gst_structure_fixate_field_nearest_int (s, "height", best_height); gst_structure_fixate_field_nearest_fraction (s, "framerate", best_fps_n, best_fps_d); gst_structure_get_int (s, "width", &info.width); gst_structure_get_int (s, "height", &info.height); gst_structure_get_fraction (s, "fraction", &info.fps_n, &info.fps_d); } caps = gst_video_info_to_caps (&info); GST_GL_MIXER_UNLOCK (mix); ret = gst_gl_mixer_src_setcaps (mix->srcpad, mix, caps); gst_caps_unref (caps); } else { GST_GL_MIXER_UNLOCK (mix); } done: return ret; } static gboolean gst_gl_mixer_pad_sink_setcaps (GstPad * pad, GstObject * parent, GstCaps * caps) { GstGLMixer *mix; GstGLMixerPad *mixpad; GstVideoInfo info; gboolean ret = FALSE; GST_INFO_OBJECT (pad, "Setting caps %" GST_PTR_FORMAT, caps); mix = GST_GL_MIXER (parent); mixpad = GST_GL_MIXER_PAD (pad); if (!gst_video_info_from_caps (&info, caps)) { GST_ERROR_OBJECT (pad, "Failed to parse caps"); goto beach; } GST_GL_MIXER_LOCK (mix); if (GST_VIDEO_INFO_FORMAT (&mix->info) != GST_VIDEO_FORMAT_UNKNOWN) { if (GST_VIDEO_INFO_FORMAT (&mix->info) != GST_VIDEO_INFO_FORMAT (&info) || GST_VIDEO_INFO_PAR_N (&mix->info) != GST_VIDEO_INFO_PAR_N (&info) || GST_VIDEO_INFO_PAR_D (&mix->info) != GST_VIDEO_INFO_PAR_D (&info)) { GST_ERROR_OBJECT (pad, "Caps not compatible with other pads' caps"); GST_GL_MIXER_UNLOCK (mix); goto beach; } } mix->info = info; mixpad->info = info; GST_GL_MIXER_UNLOCK (mix); ret = gst_gl_mixer_update_src_caps (mix); beach: return ret; } static GstCaps * gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstObject * parent, GstCaps * filter) { GstGLMixer *mix; GstCaps *srccaps; GstStructure *s; gint i, n; mix = GST_GL_MIXER (parent); srccaps = gst_pad_get_current_caps (GST_PAD (mix->srcpad)); if (srccaps == NULL) srccaps = gst_pad_get_pad_template_caps (GST_PAD (mix->srcpad)); srccaps = gst_caps_make_writable (srccaps); n = gst_caps_get_size (srccaps); for (i = 0; i < n; i++) { s = gst_caps_get_structure (srccaps, i); gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); if (!gst_structure_has_field (s, "pixel-aspect-ratio")) gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, NULL); } GST_DEBUG_OBJECT (pad, "Returning %" GST_PTR_FORMAT, srccaps); return srccaps; } static gboolean gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstObject * parent, GstCaps * caps) { gboolean ret; GstGLMixer *mix; GstCaps *accepted_caps; gint i, n; GstStructure *s; mix = GST_GL_MIXER (parent); GST_DEBUG_OBJECT (pad, "%" GST_PTR_FORMAT, caps); accepted_caps = gst_pad_get_current_caps (GST_PAD (mix->srcpad)); if (accepted_caps == NULL) accepted_caps = gst_pad_get_pad_template_caps (GST_PAD (mix->srcpad)); accepted_caps = gst_caps_make_writable (accepted_caps); GST_LOG_OBJECT (pad, "src caps %" GST_PTR_FORMAT, accepted_caps); n = gst_caps_get_size (accepted_caps); for (i = 0; i < n; i++) { s = gst_caps_get_structure (accepted_caps, i); gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); if (!gst_structure_has_field (s, "pixel-aspect-ratio")) gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, NULL); } ret = gst_caps_can_intersect (caps, accepted_caps); GST_INFO_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT, (ret ? "" : "not "), caps); GST_INFO_OBJECT (pad, "acceptable caps are %" GST_PTR_FORMAT, accepted_caps); gst_caps_unref (accepted_caps); return ret; } static gboolean gst_gl_mixer_pad_sink_query (GstPad * pad, GstObject * parent, GstQuery * query) { gboolean ret = FALSE; switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CAPS: { GstCaps *filter, *caps; gst_query_parse_caps (query, &filter); caps = gst_gl_mixer_pad_sink_getcaps (pad, parent, filter); gst_query_set_caps_result (query, caps); gst_caps_unref (caps); ret = TRUE; break; } case GST_QUERY_ACCEPT_CAPS: { GstCaps *caps; gst_query_parse_accept_caps (query, &caps); ret = gst_gl_mixer_pad_sink_acceptcaps (pad, parent, caps); gst_query_set_accept_caps_result (query, ret); ret = TRUE; break; } default: ret = gst_pad_query_default (pad, parent, query); break; } return ret; } static void gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad) { gst_pad_set_query_function (GST_PAD (mixerpad), gst_gl_mixer_pad_sink_query); mixerpad->display = NULL; } /* GLMixer signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { PROP_0 }; static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_GL_VIDEO_CAPS) ); static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%d", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS (GST_GL_VIDEO_CAPS) ); static void gst_gl_mixer_finalize (GObject * object); static gboolean gst_gl_mixer_src_query (GstPad * pad, GstObject * object, GstQuery * query); static GstFlowReturn gst_gl_mixer_sink_clip (GstCollectPads * pads, GstCollectData * data, GstBuffer * buf, GstBuffer ** outbuf, GstGLMixer * mix); static GstFlowReturn gst_gl_mixer_collected (GstCollectPads * pads, GstGLMixer * mix); static GstPad *gst_gl_mixer_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name, const GstCaps * caps); static void gst_gl_mixer_release_pad (GstElement * element, GstPad * pad); static void gst_gl_mixer_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_gl_mixer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstStateChangeReturn gst_gl_mixer_change_state (GstElement * element, GstStateChange transition); static gboolean gst_gl_mixer_query_caps (GstPad * pad, GstObject * parent, GstQuery * query); static gboolean gst_gl_mixer_query_duration (GstGLMixer * mix, GstQuery * query); static gboolean gst_gl_mixer_query_latency (GstGLMixer * mix, GstQuery * query); static gint64 gst_gl_mixer_do_qos (GstGLMixer * mix, GstClockTime timestamp); static void gst_gl_mixer_update_qos (GstGLMixer * mix, gdouble proportion, GstClockTimeDiff diff, GstClockTime timestamp); static void gst_gl_mixer_reset_qos (GstGLMixer * mix); static void gst_gl_mixer_read_qos (GstGLMixer * mix, gdouble * proportion, GstClockTime * time); static void gst_gl_mixer_child_proxy_init (gpointer g_iface, gpointer iface_data); #define gst_gl_mixer_parent_class parent_class G_DEFINE_TYPE_WITH_CODE (GstGLMixer, gst_gl_mixer, GST_TYPE_ELEMENT, G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY, gst_gl_mixer_child_proxy_init); GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer")); static void gst_gl_mixer_finalize (GObject * object); static GObject * gst_gl_mixer_child_proxy_get_child_by_index (GstChildProxy * child_proxy, guint index) { GstGLMixer *mix = GST_GL_MIXER (child_proxy); GObject *obj; GST_GL_MIXER_LOCK (mix); if ((obj = g_slist_nth_data (mix->sinkpads, index))) g_object_ref (obj); GST_GL_MIXER_UNLOCK (mix); return obj; } static guint gst_gl_mixer_child_proxy_get_children_count (GstChildProxy * child_proxy) { guint count = 0; GstGLMixer *mix = GST_GL_MIXER (child_proxy); GST_GL_MIXER_LOCK (mix); count = mix->numpads; GST_GL_MIXER_UNLOCK (mix); GST_INFO_OBJECT (mix, "Children Count: %d", count); return count; } static void gst_gl_mixer_child_proxy_init (gpointer g_iface, gpointer iface_data) { GstChildProxyInterface *iface = g_iface; GST_INFO ("intializing child proxy interface"); iface->get_child_by_index = gst_gl_mixer_child_proxy_get_child_by_index; iface->get_children_count = gst_gl_mixer_child_proxy_get_children_count; } static void gst_gl_mixer_class_init (GstGLMixerClass * klass) { GObjectClass *gobject_class; GstElementClass *element_class; gobject_class = (GObjectClass *) klass; element_class = GST_ELEMENT_CLASS (klass); gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize); gobject_class->get_property = gst_gl_mixer_get_property; gobject_class->set_property = gst_gl_mixer_set_property; gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_factory)); element_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_gl_mixer_request_new_pad); element_class->release_pad = GST_DEBUG_FUNCPTR (gst_gl_mixer_release_pad); element_class->change_state = GST_DEBUG_FUNCPTR (gst_gl_mixer_change_state); /* Register the pad class */ g_type_class_ref (GST_TYPE_GL_MIXER_PAD); klass->set_caps = NULL; } static void gst_gl_mixer_collect_free (GstGLMixerCollect * mixcol) { if (mixcol->buffer) { gst_buffer_unref (mixcol->buffer); mixcol->buffer = NULL; } } static void gst_gl_mixer_reset (GstGLMixer * mix) { GSList *l; gst_video_info_init (&mix->info); mix->ts_offset = 0; mix->nframes = 0; gst_segment_init (&mix->segment, GST_FORMAT_TIME); mix->segment.position = -1; /* clean up collect data */ for (l = mix->sinkpads; l; l = l->next) { GstGLMixerPad *p = l->data; GstGLMixerCollect *mixcol = p->mixcol; gst_buffer_replace (&mixcol->buffer, NULL); mixcol->start_time = -1; mixcol->end_time = -1; gst_video_info_init (&p->info); } mix->newseg_pending = TRUE; mix->flush_stop_pending = FALSE; } static void gst_gl_mixer_init (GstGLMixer * mix) { GstElementClass *klass = GST_ELEMENT_GET_CLASS (mix); mix->srcpad = gst_pad_new_from_template (gst_element_class_get_pad_template (klass, "src"), "src"); gst_pad_set_query_function (GST_PAD (mix->srcpad), GST_DEBUG_FUNCPTR (gst_gl_mixer_src_query)); gst_pad_set_event_function (GST_PAD (mix->srcpad), GST_DEBUG_FUNCPTR (gst_gl_mixer_src_event)); gst_element_add_pad (GST_ELEMENT (mix), mix->srcpad); mix->collect = gst_collect_pads_new (); gst_collect_pads_set_function (mix->collect, (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_gl_mixer_collected), mix); gst_collect_pads_set_event_function (mix->collect, (GstCollectPadsEventFunction) gst_gl_mixer_sink_event, mix); gst_collect_pads_set_clip_function (mix->collect, (GstCollectPadsClipFunction) gst_gl_mixer_sink_clip, mix); g_mutex_init (&mix->lock); mix->array_buffers = 0; mix->display = NULL; mix->fbo = 0; mix->depthbuffer = 0; /* initialize variables */ gst_gl_mixer_reset (mix); } static void gst_gl_mixer_finalize (GObject * object) { GstGLMixer *mix = GST_GL_MIXER (object); gst_object_unref (mix->collect); g_mutex_clear (&mix->lock); G_OBJECT_CLASS (parent_class)->finalize (object); } static gboolean gst_gl_mixer_query_duration (GstGLMixer * mix, GstQuery * query) { GValue item = { 0 }; gint64 max; gboolean res; GstFormat format; GstIterator *it; gboolean done; /* parse format */ gst_query_parse_duration (query, &format, NULL); max = -1; res = TRUE; done = FALSE; /* Take maximum of all durations */ it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix)); while (!done) { GstIteratorResult ires; ires = gst_iterator_next (it, &item); switch (ires) { case GST_ITERATOR_DONE: done = TRUE; break; case GST_ITERATOR_OK: { GstPad *pad; gint64 duration; pad = g_value_get_object (&item); /* ask sink peer for duration */ res &= gst_pad_peer_query_duration (pad, format, &duration); /* take max from all valid return values */ if (res) { /* valid unknown length, stop searching */ if (duration == -1) { max = duration; done = TRUE; } /* else see if bigger than current max */ else if (duration > max) max = duration; } g_value_reset (&item); break; } case GST_ITERATOR_RESYNC: max = -1; res = TRUE; gst_iterator_resync (it); break; default: res = FALSE; done = TRUE; break; } } g_value_reset (&item); gst_iterator_free (it); if (res) { /* and store the max */ GST_DEBUG_OBJECT (mix, "Total duration in format %s: %" GST_TIME_FORMAT, gst_format_get_name (format), GST_TIME_ARGS (max)); gst_query_set_duration (query, format, max); } return res; } static gboolean gst_gl_mixer_query_caps (GstPad * pad, GstObject * parent, GstQuery * query) { GstCaps *filter, *caps; GstGLMixer *mix = GST_GL_MIXER (parent); GstStructure *s; gint n; gst_query_parse_caps (query, &filter); if (GST_VIDEO_INFO_FORMAT (&mix->info) != GST_VIDEO_FORMAT_UNKNOWN) { caps = gst_pad_get_current_caps (mix->srcpad); } else { caps = gst_pad_get_pad_template_caps (mix->srcpad); } caps = gst_caps_make_writable (caps); n = gst_caps_get_size (caps) - 1; for (; n >= 0; n--) { s = gst_caps_get_structure (caps, n); gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); if (GST_VIDEO_INFO_FPS_D (&mix->info) != 0) { gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); } } gst_query_set_caps_result (query, caps); return TRUE; } static gboolean gst_gl_mixer_query_latency (GstGLMixer * mix, GstQuery * query) { GValue item = { 0 }; GstClockTime min, max; gboolean live; gboolean res; GstIterator *it; gboolean done; res = TRUE; done = FALSE; live = FALSE; min = 0; max = GST_CLOCK_TIME_NONE; /* Take maximum of all latency values */ it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix)); while (!done) { GstIteratorResult ires; ires = gst_iterator_next (it, &item); switch (ires) { case GST_ITERATOR_DONE: done = TRUE; break; case GST_ITERATOR_OK: { GstPad *pad; GstQuery *peerquery; GstClockTime min_cur, max_cur; gboolean live_cur; pad = g_value_get_object (&item); peerquery = gst_query_new_latency (); /* Ask peer for latency */ res &= gst_pad_peer_query (pad, peerquery); /* take max from all valid return values */ if (res) { gst_query_parse_latency (peerquery, &live_cur, &min_cur, &max_cur); if (min_cur > min) min = min_cur; if (max_cur != GST_CLOCK_TIME_NONE && ((max != GST_CLOCK_TIME_NONE && max_cur > max) || (max == GST_CLOCK_TIME_NONE))) max = max_cur; live = live || live_cur; } gst_query_unref (peerquery); g_value_reset (&item); break; } case GST_ITERATOR_RESYNC: live = FALSE; min = 0; max = GST_CLOCK_TIME_NONE; res = TRUE; gst_iterator_resync (it); break; default: res = FALSE; done = TRUE; break; } } g_value_unset (&item); gst_iterator_free (it); if (res) { /* store the results */ GST_DEBUG_OBJECT (mix, "Calculated total latency: live %s, min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT, (live ? "yes" : "no"), GST_TIME_ARGS (min), GST_TIME_ARGS (max)); gst_query_set_latency (query, live, min, max); } return res; } static void gst_gl_mixer_update_qos (GstGLMixer * mix, gdouble proportion, GstClockTimeDiff diff, GstClockTime timestamp) { GST_DEBUG_OBJECT (mix, "Updating QoS: proportion %lf, diff %s%" GST_TIME_FORMAT ", timestamp %" GST_TIME_FORMAT, proportion, (diff < 0) ? "-" : "", GST_TIME_ARGS (ABS (diff)), GST_TIME_ARGS (timestamp)); GST_OBJECT_LOCK (mix); mix->proportion = proportion; if (G_LIKELY (timestamp != GST_CLOCK_TIME_NONE)) { if (G_UNLIKELY (diff > 0)) mix->earliest_time = timestamp + 2 * diff + gst_util_uint64_scale_int (GST_SECOND, GST_VIDEO_INFO_FPS_D (&mix->info), GST_VIDEO_INFO_FPS_N (&mix->info)); else mix->earliest_time = timestamp + diff; } else { mix->earliest_time = GST_CLOCK_TIME_NONE; } GST_OBJECT_UNLOCK (mix); } static void gst_gl_mixer_reset_qos (GstGLMixer * mix) { gst_gl_mixer_update_qos (mix, 0.5, 0, GST_CLOCK_TIME_NONE); mix->qos_processed = mix->qos_dropped = 0; } static void gst_gl_mixer_read_qos (GstGLMixer * mix, gdouble * proportion, GstClockTime * time) { GST_OBJECT_LOCK (mix); *proportion = mix->proportion; *time = mix->earliest_time; GST_OBJECT_UNLOCK (mix); } static gboolean gst_gl_mixer_src_query (GstPad * pad, GstObject * parent, GstQuery * query) { GstGLMixer *mix = GST_GL_MIXER (parent); gboolean res = FALSE; switch (GST_QUERY_TYPE (query)) { case GST_QUERY_POSITION: { GstFormat format; gst_query_parse_position (query, &format, NULL); switch (format) { case GST_FORMAT_TIME: gst_query_set_position (query, format, gst_segment_to_stream_time (&mix->segment, GST_FORMAT_TIME, mix->segment.position)); res = TRUE; break; default: break; } break; } case GST_QUERY_DURATION: res = gst_gl_mixer_query_duration (mix, query); break; case GST_QUERY_LATENCY: res = gst_gl_mixer_query_latency (mix, query); break; case GST_QUERY_CAPS: res = gst_gl_mixer_query_caps (pad, parent, query); break; case GST_QUERY_CUSTOM: { /* mix is a sink in terms of gl chain, so we are sharing the gldisplay that * comes from src pad with every display of the sink pads */ GSList *walk = mix->sinkpads; GstStructure *structure = gst_query_writable_structure (query); res = g_strcmp0 (gst_element_get_name (mix), gst_structure_get_name (structure)) == 0; if (!res) { GstGLDisplay *foreign_display = NULL; gulong foreign_gl_context = 0; if (mix->display) { /* this gl filter is a sink in terms of the gl chain */ foreign_display = mix->display; } else { /* at least one gl element is after in our gl chain */ /* id_value is set by upstream element of itself when going * to paused state */ const GValue *id_value = gst_structure_get_value (structure, "gstgldisplay"); foreign_display = GST_GL_DISPLAY (g_value_get_pointer (id_value)); } foreign_gl_context = gst_gl_display_get_internal_gl_context (foreign_display); /* iterate on each sink pad until reaching the gl element * that requested the query */ while (!res && walk) { GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data); GstPad *peer = gst_pad_get_peer (GST_PAD_CAST (sink_pad)); walk = g_slist_next (walk); g_return_val_if_fail (sink_pad->display != NULL, FALSE); gst_gl_display_activate_gl_context (foreign_display, FALSE); res = gst_gl_display_create_context (sink_pad->display, foreign_gl_context); gst_gl_display_activate_gl_context (foreign_display, TRUE); if (res) gst_structure_set (structure, "gstgldisplay", G_TYPE_POINTER, sink_pad->display, NULL); else GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, GST_GL_DISPLAY_ERR_MSG (sink_pad->display), (NULL)); /* does not work: * res = gst_pad_query_default (GST_PAD_CAST (sink_pad), query);*/ res = gst_pad_query (peer, query); gst_object_unref (peer); } } break; } default: /* FIXME, needs a custom query handler because we have multiple * sinkpads, send to the master pad until then */ res = FALSE; gst_query_unref (query); break; } return res; } static gboolean gst_gl_mixer_src_setcaps (GstPad * pad, GstGLMixer * mix, GstCaps * caps) { GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix); GstVideoInfo info; gboolean ret; GST_INFO_OBJECT (mix, "set src caps: %" GST_PTR_FORMAT, caps); if (!gst_video_info_from_caps (&info, caps)) { ret = TRUE; goto done; } GST_GL_MIXER_LOCK (mix); if (GST_VIDEO_INFO_FPS_N (&mix->info) != GST_VIDEO_INFO_FPS_N (&info) || GST_VIDEO_INFO_FPS_D (&mix->info) != GST_VIDEO_INFO_FPS_D (&info)) { if (mix->segment.position != -1) { mix->ts_offset = mix->segment.position - mix->segment.start; mix->nframes = 0; } gst_gl_mixer_reset_qos (mix); } mix->info = info; GST_GL_MIXER_UNLOCK (mix); if (!gst_gl_display_gen_fbo (mix->display, GST_VIDEO_INFO_WIDTH (&mix->info), GST_VIDEO_INFO_HEIGHT (&mix->info), &mix->fbo, &mix->depthbuffer)) { GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, GST_GL_DISPLAY_ERR_MSG (mix->display), (NULL)); ret = FALSE; goto done; } if (mixer_class->set_caps) mixer_class->set_caps (mix, caps); ret = TRUE; done: return ret; } static GstPad * gst_gl_mixer_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps) { GstGLMixer *mix; GstGLMixerPad *mixpad; GstElementClass *klass = GST_ELEMENT_GET_CLASS (element); mix = GST_GL_MIXER (element); if (templ == gst_element_class_get_pad_template (klass, "sink_%d")) { gint serial = 0; gchar *name = NULL; GstGLMixerCollect *mixcol = NULL; GST_GL_MIXER_LOCK (mix); if (req_name == NULL || strlen (req_name) < 6 || !g_str_has_prefix (req_name, "sink_")) { /* no name given when requesting the pad, use next available int */ serial = mix->next_sinkpad++; } else { /* parse serial number from requested padname */ serial = g_ascii_strtoull (&req_name[5], NULL, 10); if (serial >= mix->next_sinkpad) mix->next_sinkpad = serial + 1; } /* create new pad with the name */ name = g_strdup_printf ("sink_%d", serial); mixpad = g_object_new (GST_TYPE_GL_MIXER_PAD, "name", name, "direction", templ->direction, "template", templ, NULL); g_free (name); mixcol = (GstGLMixerCollect *) gst_collect_pads_add_pad_full (mix->collect, GST_PAD (mixpad), sizeof (GstGLMixerCollect), (GstCollectDataDestroyNotify) gst_gl_mixer_collect_free, TRUE); /* Keep track of each other */ mixcol->mixpad = mixpad; mixpad->mixcol = mixcol; mixcol->start_time = -1; mixcol->end_time = -1; /* Keep an internal list of mixpads for zordering */ mix->sinkpads = g_slist_append (mix->sinkpads, mixpad); mix->numpads++; GST_GL_MIXER_UNLOCK (mix); } else { return NULL; } GST_DEBUG_OBJECT (element, "Adding pad %s", GST_PAD_NAME (mixpad)); /* add the pad to the element */ gst_element_add_pad (element, GST_PAD (mixpad)); gst_child_proxy_child_added (GST_CHILD_PROXY (mix), G_OBJECT (mixpad), GST_OBJECT_NAME (mixpad)); return GST_PAD (mixpad); } static void gst_gl_mixer_release_pad (GstElement * element, GstPad * pad) { GstGLMixer *mix; GstGLMixerPad *mixpad; gboolean update_caps; mix = GST_GL_MIXER (element); GST_GL_MIXER_LOCK (mix); if (G_UNLIKELY (g_slist_find (mix->sinkpads, pad) == NULL)) { g_warning ("Unknown pad %s", GST_PAD_NAME (pad)); goto error; } mixpad = GST_GL_MIXER_PAD (pad); mix->sinkpads = g_slist_remove (mix->sinkpads, pad); gst_child_proxy_child_removed (GST_CHILD_PROXY (mix), G_OBJECT (mixpad), GST_OBJECT_NAME (mixpad)); mix->numpads--; update_caps = GST_VIDEO_INFO_FORMAT (&mix->info) != GST_VIDEO_FORMAT_UNKNOWN; GST_GL_MIXER_UNLOCK (mix); gst_collect_pads_remove_pad (mix->collect, pad); if (update_caps) gst_gl_mixer_update_src_caps (mix); gst_element_remove_pad (element, pad); return; error: GST_GL_MIXER_UNLOCK (mix); } /* try to get a buffer on all pads. As long as the queued value is * negative, we skip buffers */ static gint gst_gl_mixer_fill_queues (GstGLMixer * mix, GstClockTime output_start_time, GstClockTime output_end_time) { GSList *l; gboolean eos = TRUE; gboolean need_more_data = FALSE; for (l = mix->sinkpads; l; l = l->next) { GstGLMixerPad *pad = l->data; GstGLMixerCollect *mixcol = pad->mixcol; GstSegment *segment = &pad->mixcol->collect.segment; GstBuffer *buf; buf = gst_collect_pads_peek (mix->collect, &mixcol->collect); if (buf) { GstClockTime start_time, end_time; start_time = GST_BUFFER_TIMESTAMP (buf); if (start_time == -1) { gst_buffer_unref (buf); GST_ERROR_OBJECT (pad, "Need timestamped buffers!"); return -2; } /* FIXME: Make all this work with negative rates */ if ((mixcol->buffer && start_time < GST_BUFFER_TIMESTAMP (mixcol->buffer)) || (mixcol->queued && start_time < GST_BUFFER_TIMESTAMP (mixcol->queued))) { GST_WARNING_OBJECT (pad, "Buffer from the past, dropping"); gst_buffer_unref (buf); buf = gst_collect_pads_pop (mix->collect, &mixcol->collect); gst_buffer_unref (buf); need_more_data = TRUE; continue; } if (mixcol->queued) { end_time = start_time - GST_BUFFER_TIMESTAMP (mixcol->queued); start_time = GST_BUFFER_TIMESTAMP (mixcol->queued); gst_buffer_unref (buf); buf = gst_buffer_ref (mixcol->queued); } else { end_time = GST_BUFFER_DURATION (buf); if (end_time == -1) { mixcol->queued = buf; need_more_data = TRUE; continue; } } g_assert (start_time != -1 && end_time != -1); end_time += start_time; /* convert from duration to position */ if (mixcol->end_time != -1 && mixcol->end_time > end_time) { GST_WARNING_OBJECT (pad, "Buffer from the past, dropping"); if (buf == mixcol->queued) { gst_buffer_unref (buf); gst_buffer_replace (&mixcol->queued, NULL); } else { gst_buffer_unref (buf); buf = gst_collect_pads_pop (mix->collect, &mixcol->collect); gst_buffer_unref (buf); } need_more_data = TRUE; continue; } /* Check if it's inside the segment */ if (start_time >= segment->stop || end_time < segment->start) { GST_DEBUG_OBJECT (pad, "Buffer outside the segment"); if (buf == mixcol->queued) { gst_buffer_unref (buf); gst_buffer_replace (&mixcol->queued, NULL); } else { gst_buffer_unref (buf); buf = gst_collect_pads_pop (mix->collect, &mixcol->collect); gst_buffer_unref (buf); } need_more_data = TRUE; continue; } /* Clip to segment and convert to running time */ start_time = MAX (start_time, segment->start); if (segment->stop != -1) end_time = MIN (end_time, segment->stop); start_time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, start_time); end_time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, end_time); g_assert (start_time != -1 && end_time != -1); /* Convert to the output segment rate */ if (ABS (mix->segment.rate) != 1.0) { start_time *= ABS (mix->segment.rate); end_time *= ABS (mix->segment.rate); } if (end_time >= output_start_time && start_time < output_end_time) { GST_DEBUG_OBJECT (pad, "Taking new buffer with start time %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time)); gst_buffer_replace (&mixcol->buffer, buf); mixcol->start_time = start_time; mixcol->end_time = end_time; if (buf == mixcol->queued) { gst_buffer_unref (buf); gst_buffer_replace (&mixcol->queued, NULL); } else { gst_buffer_unref (buf); buf = gst_collect_pads_pop (mix->collect, &mixcol->collect); gst_buffer_unref (buf); } eos = FALSE; } else if (start_time >= output_end_time) { GST_DEBUG_OBJECT (pad, "Keeping buffer until %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time)); gst_buffer_unref (buf); eos = FALSE; } else { GST_DEBUG_OBJECT (pad, "Too old buffer -- dropping"); if (buf == mixcol->queued) { gst_buffer_unref (buf); gst_buffer_replace (&mixcol->queued, NULL); } else { gst_buffer_unref (buf); buf = gst_collect_pads_pop (mix->collect, &mixcol->collect); gst_buffer_unref (buf); } need_more_data = TRUE; continue; } } else { if (mixcol->end_time != -1) { if (mixcol->end_time < output_start_time) { gst_buffer_replace (&mixcol->buffer, NULL); mixcol->start_time = mixcol->end_time = -1; if (!GST_COLLECT_PADS_STATE_IS_SET (mixcol, GST_COLLECT_PADS_STATE_EOS)) need_more_data = TRUE; } else { eos = FALSE; } } } } if (need_more_data) return 0; if (eos) return -1; return 1; } static void gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf) { GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix); GSList *walk = mix->sinkpads; gint array_index = 0; while (walk) { /* We walk with this list because it's ordered */ GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data); GstGLMixerCollect *mixcol = pad->mixcol; walk = g_slist_next (walk); if (mixcol->buffer != NULL) { GstClockTime timestamp; gint64 stream_time; GstSegment *seg; seg = &mixcol->collect.segment; timestamp = GST_BUFFER_TIMESTAMP (mixcol->buffer); stream_time = gst_segment_to_stream_time (seg, GST_FORMAT_TIME, timestamp); /* sync object properties on stream time */ if (GST_CLOCK_TIME_IS_VALID (stream_time)) gst_object_sync_values (GST_OBJECT (pad), stream_time); /* put buffer into array */ mix->array_buffers->pdata[array_index] = mixcol->buffer; /*if (pad == mix->master) { gint64 running_time; running_time = gst_segment_to_running_time (seg, GST_FORMAT_TIME, timestamp); */ /* outgoing buffers need the running_time */ /*GST_BUFFER_TIMESTAMP (outbuf) = running_time; GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (mixcol->buffer); mix->last_ts = running_time; if (GST_BUFFER_DURATION_IS_VALID (outbuf)) mix->last_ts += GST_BUFFER_DURATION (outbuf); } */ } ++array_index; } mix_class->process_buffers (mix, mix->array_buffers, outbuf); } /* Perform qos calculations before processing the next frame. Returns TRUE if * the frame should be processed, FALSE if the frame can be dropped entirely */ static gint64 gst_gl_mixer_do_qos (GstGLMixer * mix, GstClockTime timestamp) { GstClockTime qostime, earliest_time; gdouble proportion; gint64 jitter; /* no timestamp, can't do QoS => process frame */ if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp))) { GST_LOG_OBJECT (mix, "invalid timestamp, can't do QoS, process frame"); return -1; } /* get latest QoS observation values */ gst_gl_mixer_read_qos (mix, &proportion, &earliest_time); /* skip qos if we have no observation (yet) => process frame */ if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (earliest_time))) { GST_LOG_OBJECT (mix, "no observation yet, process frame"); return -1; } /* qos is done on running time */ qostime = gst_segment_to_running_time (&mix->segment, GST_FORMAT_TIME, timestamp); /* see how our next timestamp relates to the latest qos timestamp */ GST_LOG_OBJECT (mix, "qostime %" GST_TIME_FORMAT ", earliest %" GST_TIME_FORMAT, GST_TIME_ARGS (qostime), GST_TIME_ARGS (earliest_time)); jitter = GST_CLOCK_DIFF (qostime, earliest_time); if (qostime != GST_CLOCK_TIME_NONE && jitter > 0) { GST_DEBUG_OBJECT (mix, "we are late, drop frame"); return jitter; } GST_LOG_OBJECT (mix, "process frame"); return jitter; } static GstFlowReturn gst_gl_mixer_collected (GstCollectPads * pads, GstGLMixer * mix) { GstFlowReturn ret; GstClockTime output_start_time, output_end_time; GstBuffer *outbuf = NULL; gint res; gint64 jitter; g_return_val_if_fail (GST_IS_GL_MIXER (mix), GST_FLOW_ERROR); /* If we're not negotiated yet... */ if (GST_VIDEO_INFO_FORMAT (&mix->info) == GST_VIDEO_FORMAT_UNKNOWN) return GST_FLOW_NOT_NEGOTIATED; if (g_atomic_int_compare_and_exchange (&mix->flush_stop_pending, TRUE, FALSE)) { GST_DEBUG_OBJECT (mix, "pending flush stop"); gst_pad_push_event (mix->srcpad, gst_event_new_flush_stop (TRUE)); } GST_GL_MIXER_LOCK (mix); if (mix->newseg_pending) { GST_DEBUG_OBJECT (mix, "Sending NEWSEGMENT event"); if (!gst_pad_push_event (mix->srcpad, gst_event_new_segment (&mix->segment))) { ret = GST_FLOW_ERROR; goto error; } mix->newseg_pending = FALSE; } if (mix->segment.position == -1) output_start_time = mix->segment.start; else output_start_time = mix->segment.position; if (output_start_time >= mix->segment.stop) { GST_DEBUG_OBJECT (mix, "Segment done"); gst_pad_push_event (mix->srcpad, gst_event_new_eos ()); ret = GST_FLOW_EOS; goto error; } output_end_time = mix->ts_offset + gst_util_uint64_scale (mix->nframes + 1, GST_SECOND * GST_VIDEO_INFO_FPS_D (&mix->info), GST_VIDEO_INFO_FPS_N (&mix->info)); if (mix->segment.stop != -1) output_end_time = MIN (output_end_time, mix->segment.stop); res = gst_gl_mixer_fill_queues (mix, output_start_time, output_end_time); if (res == 0) { GST_DEBUG_OBJECT (mix, "Need more data for decisions"); ret = GST_FLOW_OK; goto error; } else if (res == -1) { GST_DEBUG_OBJECT (mix, "All sinkpads are EOS -- forwarding"); gst_pad_push_event (mix->srcpad, gst_event_new_eos ()); ret = GST_FLOW_EOS; goto error; } else if (res == -2) { GST_ERROR_OBJECT (mix, "Error collecting buffers"); ret = GST_FLOW_ERROR; goto error; } jitter = gst_gl_mixer_do_qos (mix, output_start_time); if (jitter <= 0) { /* FIXME: Use GstGLMeta */ /* Calculating out buffer size from input size */ /*ret = gst_gl_buffer_parse_caps (GST_PAD_CAPS (mix->srcpad), &width, &height); gl_outbuf = gst_gl_buffer_new (mix->display, mix->width, mix->height); outbuf = GST_BUFFER (gl_outbuf); gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mix->srcpad)); */ gst_gl_mixer_process_buffers (mix, outbuf); mix->qos_processed++; } else { GstMessage *msg; mix->qos_dropped++; /* TODO: live */ msg = gst_message_new_qos (GST_OBJECT_CAST (mix), FALSE, gst_segment_to_running_time (&mix->segment, GST_FORMAT_TIME, output_start_time), gst_segment_to_stream_time (&mix->segment, GST_FORMAT_TIME, output_start_time), output_start_time, output_end_time - output_start_time); gst_message_set_qos_values (msg, jitter, mix->proportion, 1000000); gst_message_set_qos_stats (msg, GST_FORMAT_BUFFERS, mix->qos_processed, mix->qos_dropped); gst_element_post_message (GST_ELEMENT_CAST (mix), msg); ret = GST_FLOW_OK; } mix->segment.position = output_end_time; mix->nframes++; GST_GL_MIXER_UNLOCK (mix); if (outbuf) { GST_LOG_OBJECT (mix, "Pushing buffer with ts %" GST_TIME_FORMAT " and duration %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)), GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf))); ret = gst_pad_push (mix->srcpad, outbuf); } done: return ret; /* ERRORS */ error: { GST_GL_MIXER_UNLOCK (mix); goto done; } } static gboolean forward_event_func (GstPad * pad, GValue * ret, GstEvent * event) { gst_event_ref (event); GST_LOG_OBJECT (pad, "About to send event %s", GST_EVENT_TYPE_NAME (event)); if (!gst_pad_push_event (pad, event)) { g_value_set_boolean (ret, FALSE); GST_WARNING_OBJECT (pad, "Sending event %p (%s) failed.", event, GST_EVENT_TYPE_NAME (event)); } else { GST_LOG_OBJECT (pad, "Sent event %p (%s).", event, GST_EVENT_TYPE_NAME (event)); } gst_object_unref (pad); return TRUE; } /* forwards the event to all sinkpads, takes ownership of the * event * * Returns: TRUE if the event could be forwarded on all * sinkpads. */ static gboolean gst_gl_mixer_push_sink_event (GstGLMixer * mix, GstEvent * event) { GstIterator *it; GValue vret = { 0 }; GST_LOG_OBJECT (mix, "Forwarding event %p (%s)", event, GST_EVENT_TYPE_NAME (event)); g_value_init (&vret, G_TYPE_BOOLEAN); g_value_set_boolean (&vret, TRUE); it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix)); gst_iterator_fold (it, (GstIteratorFoldFunction) forward_event_func, &vret, event); gst_iterator_free (it); gst_event_unref (event); return g_value_get_boolean (&vret); } static GstFlowReturn gst_gl_mixer_sink_clip (GstCollectPads * pads, GstCollectData * data, GstBuffer * buf, GstBuffer ** outbuf, GstGLMixer * mix) { GstGLMixerPad *pad = GST_GL_MIXER_PAD (data->pad); GstGLMixerCollect *mixcol = pad->mixcol; GstClockTime start_time, end_time; start_time = GST_BUFFER_TIMESTAMP (buf); if (start_time == -1) { GST_ERROR_OBJECT (pad, "Timestamped buffers required!"); gst_buffer_unref (buf); return GST_FLOW_ERROR; } end_time = GST_BUFFER_DURATION (buf); if (end_time == -1) end_time = gst_util_uint64_scale_int (GST_SECOND, GST_VIDEO_INFO_FPS_D (&pad->info), GST_VIDEO_INFO_FPS_N (&pad->info)); if (end_time == -1) { *outbuf = buf; return GST_FLOW_OK; } start_time = MAX (start_time, mixcol->collect.segment.start); start_time = gst_segment_to_running_time (&mixcol->collect.segment, GST_FORMAT_TIME, start_time); end_time += GST_BUFFER_TIMESTAMP (buf); if (mixcol->collect.segment.stop != -1) end_time = MIN (end_time, mixcol->collect.segment.stop); end_time = gst_segment_to_running_time (&mixcol->collect.segment, GST_FORMAT_TIME, end_time); /* Convert to the output segment rate */ if (ABS (mix->segment.rate) != 1.0) { start_time *= ABS (mix->segment.rate); end_time *= ABS (mix->segment.rate); } if (mixcol->buffer != NULL && end_time < mixcol->end_time) { gst_buffer_unref (buf); *outbuf = NULL; return GST_FLOW_OK; } *outbuf = buf; return GST_FLOW_OK; } static gboolean gst_gl_mixer_src_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstGLMixer *mix = GST_GL_MIXER (parent); gboolean result; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_QOS: { GstQOSType type; GstClockTimeDiff diff; GstClockTime timestamp; gdouble proportion; gst_event_parse_qos (event, &type, &proportion, &diff, ×tamp); gst_gl_mixer_update_qos (mix, proportion, diff, timestamp); result = gst_gl_mixer_push_sink_event (mix, event); break; } case GST_EVENT_SEEK: { gdouble rate; GstFormat fmt; GstSeekFlags flags; GstSeekType start_type, stop_type; gint64 start, stop; GSList *l; gdouble abs_rate; /* parse the seek parameters */ gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type, &start, &stop_type, &stop); if (rate <= 0.0) { GST_ERROR_OBJECT (mix, "Negative rates not supported yet"); result = FALSE; gst_event_unref (event); break; } GST_DEBUG_OBJECT (mix, "Handling SEEK event"); /* check if we are flushing */ if (flags & GST_SEEK_FLAG_FLUSH) { /* flushing seek, start flush downstream, the flush will be done * when all pads received a FLUSH_STOP. */ gst_pad_push_event (mix->srcpad, gst_event_new_flush_start ()); /* make sure we accept nothing anymore and return WRONG_STATE */ gst_collect_pads_set_flushing (mix->collect, TRUE); } /* now wait for the collected to be finished and mark a new * segment */ GST_COLLECT_PADS_STREAM_LOCK (mix->collect); abs_rate = ABS (rate); GST_GL_MIXER_LOCK (mix); for (l = mix->sinkpads; l; l = l->next) { GstGLMixerPad *p = l->data; if (flags & GST_SEEK_FLAG_FLUSH) { gst_buffer_replace (&p->mixcol->buffer, NULL); p->mixcol->start_time = p->mixcol->end_time = -1; continue; } /* Convert to the output segment rate */ if (ABS (mix->segment.rate) != abs_rate) { if (ABS (mix->segment.rate) != 1.0 && p->mixcol->buffer) { p->mixcol->start_time /= ABS (mix->segment.rate); p->mixcol->end_time /= ABS (mix->segment.rate); } if (abs_rate != 1.0 && p->mixcol->buffer) { p->mixcol->start_time *= abs_rate; p->mixcol->end_time *= abs_rate; } } } GST_GL_MIXER_UNLOCK (mix); gst_segment_do_seek (&mix->segment, rate, fmt, flags, start_type, start, stop_type, stop, NULL); mix->segment.position = -1; mix->ts_offset = 0; mix->nframes = 0; mix->newseg_pending = TRUE; if (flags & GST_SEEK_FLAG_FLUSH) { gst_collect_pads_set_flushing (mix->collect, FALSE); /* we can't send FLUSH_STOP here since upstream could start pushing data * after we unlock mix->collect. * We set flush_stop_pending to TRUE instead and send FLUSH_STOP after * forwarding the seek upstream or from gst_gl_mixer_collected, * whichever happens first. */ mix->flush_stop_pending = TRUE; } GST_COLLECT_PADS_STREAM_UNLOCK (mix->collect); gst_gl_mixer_reset_qos (mix); result = gst_gl_mixer_push_sink_event (mix, event); if (g_atomic_int_compare_and_exchange (&mix->flush_stop_pending, TRUE, FALSE)) { GST_DEBUG_OBJECT (mix, "pending flush stop"); gst_pad_push_event (mix->srcpad, gst_event_new_flush_stop (TRUE)); } break; } case GST_EVENT_NAVIGATION: /* navigation is rather pointless. */ result = FALSE; gst_event_unref (event); break; default: /* just forward the rest for now */ result = gst_gl_mixer_push_sink_event (mix, event); break; } return result; } static gboolean gst_gl_mixer_sink_event (GstCollectPads * pads, GstCollectData * cdata, GstEvent * event, GstGLMixer * mix) { GstGLMixerPad *pad = GST_GL_MIXER_PAD (cdata->pad); gboolean ret = TRUE; GST_DEBUG_OBJECT (pad, "Got %s event on pad %s:%s", GST_EVENT_TYPE_NAME (event), GST_DEBUG_PAD_NAME (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_CAPS: { GstCaps *caps; gst_event_parse_caps (event, &caps); ret = gst_gl_mixer_pad_sink_setcaps (GST_PAD (pad), GST_OBJECT (mix), caps); gst_event_unref (event); event = NULL; break; } case GST_EVENT_SEGMENT:{ GstSegment seg; gst_event_copy_segment (event, &seg); g_assert (seg.format == GST_FORMAT_TIME); break; } case GST_EVENT_FLUSH_STOP: mix->newseg_pending = TRUE; mix->flush_stop_pending = FALSE; gst_gl_mixer_reset_qos (mix); gst_buffer_replace (&pad->mixcol->buffer, NULL); pad->mixcol->start_time = -1; pad->mixcol->end_time = -1; gst_segment_init (&mix->segment, GST_FORMAT_TIME); mix->segment.position = -1; mix->ts_offset = 0; mix->nframes = 0; break; default: break; } if (event != NULL) return gst_collect_pads_event_default (pads, cdata, event, FALSE); return ret; } static void gst_gl_mixer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { //GstGLMixer *mix = GST_GL_MIXER (object); 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) { //GstGLMixer *mix = GST_GL_MIXER (object); switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstStateChangeReturn gst_gl_mixer_change_state (GstElement * element, GstStateChange transition) { GstGLMixer *mix; GstStateChangeReturn ret; GstGLMixerClass *mixer_class; g_return_val_if_fail (GST_IS_GL_MIXER (element), GST_STATE_CHANGE_FAILURE); mix = GST_GL_MIXER (element); mixer_class = GST_GL_MIXER_GET_CLASS (mix); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: { GSList *walk = mix->sinkpads; gint i = 0; GstElement *parent = GST_ELEMENT (gst_element_get_parent (mix)); GstStructure *structure = NULL; GstQuery *query = NULL; gboolean isPerformed = FALSE; if (!parent) { GST_ELEMENT_ERROR (mix, CORE, STATE_CHANGE, (NULL), ("A parent bin is required")); return FALSE; } structure = gst_structure_new_empty (gst_element_get_name (mix)); query = gst_query_new_custom (GST_QUERY_CUSTOM, structure); /* retrieve the gldisplay that is owned by gl elements after the gl mixer */ isPerformed = gst_element_query (parent, query); if (isPerformed) { const GValue *id_value = gst_structure_get_value (structure, "gstgldisplay"); if (G_VALUE_HOLDS_POINTER (id_value)) /* at least one gl element is after in our gl chain */ mix->display = g_object_ref (GST_GL_DISPLAY (g_value_get_pointer (id_value))); else { /* this gl filter is a sink in terms of the gl chain */ mix->display = gst_gl_display_new (); gst_gl_display_create_context (mix->display, 0); } } gst_query_unref (query); gst_object_unref (GST_OBJECT (parent)); /* instanciate a gldisplay for each sink pad */ while (walk) { GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data); walk = g_slist_next (walk); sink_pad->display = gst_gl_display_new (); } mix->array_buffers = g_ptr_array_sized_new (mix->next_sinkpad); for (i = 0; i < mix->next_sinkpad; ++i) { g_ptr_array_add (mix->array_buffers, NULL); } GST_LOG_OBJECT (mix, "starting collectpads"); gst_collect_pads_start (mix->collect); break; } case GST_STATE_CHANGE_PAUSED_TO_READY: { GSList *walk = mix->sinkpads; GST_LOG_OBJECT (mix, "stopping collectpads"); gst_collect_pads_stop (mix->collect); g_ptr_array_free (mix->array_buffers, TRUE); while (walk) { GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data); walk = g_slist_next (walk); if (sink_pad->display) gst_gl_display_activate_gl_context (sink_pad->display, FALSE); } if (mixer_class->reset) mixer_class->reset (mix); if (mix->fbo) { gst_gl_display_del_fbo (mix->display, mix->fbo, mix->depthbuffer); mix->fbo = 0; mix->depthbuffer = 0; } if (mix->display) { g_object_unref (mix->display); mix->display = NULL; } while (walk) { GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data); walk = g_slist_next (walk); if (sink_pad->display) { gst_gl_display_activate_gl_context (sink_pad->display, TRUE); g_object_unref (sink_pad->display); sink_pad->display = NULL; } } break; } default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: gst_gl_mixer_reset (mix); break; default: break; } return ret; }