| /* Generic video aggregator plugin |
| * Copyright (C) 2004, 2008 Wim Taymans <wim@fluendo.com> |
| * Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk> |
| * |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:gstvideoaggregator |
| * @short_description: Base class for video aggregators |
| * |
| * VideoAggregator can accept AYUV, ARGB and BGRA video streams. For each of the requested |
| * sink pads it will compare the incoming geometry and framerate to define the |
| * output parameters. Indeed output video frames will have the geometry of the |
| * biggest incoming video stream and the framerate of the fastest incoming one. |
| * |
| * VideoAggregator will do colorspace conversion. |
| * |
| * Zorder for each input stream can be configured on the |
| * #GstVideoAggregatorPad. |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <string.h> |
| |
| #include "gstvideoaggregator.h" |
| #include "gstvideoaggregatorpad.h" |
| |
| GST_DEBUG_CATEGORY_STATIC (gst_videoaggregator_debug); |
| #define GST_CAT_DEFAULT gst_videoaggregator_debug |
| |
| /* Needed prototypes */ |
| static void gst_videoaggregator_reset_qos (GstVideoAggregator * vagg); |
| |
| /**************************************** |
| * GstVideoAggregatorPad implementation * |
| ****************************************/ |
| |
| #define DEFAULT_PAD_ZORDER 0 |
| #define DEFAULT_PAD_IGNORE_EOS FALSE |
| enum |
| { |
| PROP_PAD_0, |
| PROP_PAD_ZORDER, |
| PROP_PAD_IGNORE_EOS, |
| }; |
| |
| |
| struct _GstVideoAggregatorPadPrivate |
| { |
| /* Converter, if NULL no conversion is done */ |
| GstVideoConverter *convert; |
| |
| /* caps used for conversion if needed */ |
| GstVideoInfo conversion_info; |
| GstBuffer *converted_buffer; |
| |
| GstClockTime start_time; |
| GstClockTime end_time; |
| }; |
| |
| |
| G_DEFINE_TYPE (GstVideoAggregatorPad, gst_videoaggregator_pad, |
| GST_TYPE_AGGREGATOR_PAD); |
| |
| static void |
| gst_videoaggregator_pad_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (object); |
| |
| switch (prop_id) { |
| case PROP_PAD_ZORDER: |
| g_value_set_uint (value, pad->zorder); |
| break; |
| case PROP_PAD_IGNORE_EOS: |
| g_value_set_boolean (value, pad->ignore_eos); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static int |
| pad_zorder_compare (const GstVideoAggregatorPad * pad1, |
| const GstVideoAggregatorPad * pad2) |
| { |
| return pad1->zorder - pad2->zorder; |
| } |
| |
| static void |
| gst_videoaggregator_pad_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (object); |
| GstVideoAggregator *vagg = |
| GST_VIDEO_AGGREGATOR (gst_pad_get_parent (GST_PAD (pad))); |
| |
| switch (prop_id) { |
| case PROP_PAD_ZORDER: |
| GST_OBJECT_LOCK (vagg); |
| pad->zorder = g_value_get_uint (value); |
| GST_ELEMENT (vagg)->sinkpads = g_list_sort (GST_ELEMENT (vagg)->sinkpads, |
| (GCompareFunc) pad_zorder_compare); |
| GST_OBJECT_UNLOCK (vagg); |
| break; |
| case PROP_PAD_IGNORE_EOS: |
| pad->ignore_eos = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| |
| gst_object_unref (vagg); |
| } |
| |
| static gboolean |
| _flush_pad (GstAggregatorPad * aggpad, GstAggregator * aggregator) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (aggregator); |
| GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (aggpad); |
| |
| gst_videoaggregator_reset_qos (vagg); |
| gst_buffer_replace (&pad->buffer, NULL); |
| pad->priv->start_time = -1; |
| pad->priv->end_time = -1; |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_video_aggregator_pad_set_info (GstVideoAggregatorPad * pad, |
| GstVideoAggregator * vagg G_GNUC_UNUSED, |
| GstVideoInfo * current_info, GstVideoInfo * wanted_info) |
| { |
| gchar *colorimetry, *best_colorimetry; |
| const gchar *chroma, *best_chroma; |
| |
| if (!current_info->finfo) |
| return TRUE; |
| |
| if (GST_VIDEO_INFO_FORMAT (current_info) == GST_VIDEO_FORMAT_UNKNOWN) |
| return TRUE; |
| |
| if (pad->priv->convert) |
| gst_video_converter_free (pad->priv->convert); |
| |
| pad->priv->convert = NULL; |
| |
| colorimetry = gst_video_colorimetry_to_string (&(current_info->colorimetry)); |
| chroma = gst_video_chroma_to_string (current_info->chroma_site); |
| |
| best_colorimetry = |
| gst_video_colorimetry_to_string (&(wanted_info->colorimetry)); |
| best_chroma = gst_video_chroma_to_string (wanted_info->chroma_site); |
| |
| if (GST_VIDEO_INFO_FORMAT (wanted_info) != |
| GST_VIDEO_INFO_FORMAT (current_info) |
| || g_strcmp0 (colorimetry, best_colorimetry) |
| || g_strcmp0 (chroma, best_chroma)) { |
| GstVideoInfo tmp_info; |
| |
| /* Initialize with the wanted video format and our original width and |
| * height as we don't want to rescale. Then copy over the wanted |
| * colorimetry, and chroma-site and our current pixel-aspect-ratio |
| * and other relevant fields. |
| */ |
| gst_video_info_set_format (&tmp_info, GST_VIDEO_INFO_FORMAT (wanted_info), |
| current_info->width, current_info->height); |
| tmp_info.chroma_site = wanted_info->chroma_site; |
| tmp_info.colorimetry = wanted_info->colorimetry; |
| tmp_info.par_n = current_info->par_n; |
| tmp_info.par_d = current_info->par_d; |
| tmp_info.fps_n = current_info->fps_n; |
| tmp_info.fps_d = current_info->fps_d; |
| tmp_info.flags = current_info->flags; |
| tmp_info.interlace_mode = current_info->interlace_mode; |
| |
| GST_DEBUG_OBJECT (pad, "This pad will be converted from %d to %d", |
| GST_VIDEO_INFO_FORMAT (current_info), |
| GST_VIDEO_INFO_FORMAT (&tmp_info)); |
| pad->priv->convert = |
| gst_video_converter_new (current_info, &tmp_info, NULL); |
| pad->priv->conversion_info = tmp_info; |
| if (!pad->priv->convert) { |
| g_free (colorimetry); |
| g_free (best_colorimetry); |
| GST_WARNING_OBJECT (pad, "No path found for conversion"); |
| return FALSE; |
| } |
| } else { |
| GST_DEBUG_OBJECT (pad, "This pad will not need conversion"); |
| } |
| g_free (colorimetry); |
| g_free (best_colorimetry); |
| |
| return TRUE; |
| } |
| |
| static void |
| gst_videoaggregator_pad_finalize (GObject * o) |
| { |
| GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (o); |
| |
| if (vaggpad->priv->convert) |
| gst_video_converter_free (vaggpad->priv->convert); |
| vaggpad->priv->convert = NULL; |
| |
| G_OBJECT_CLASS (gst_videoaggregator_pad_parent_class)->finalize (o); |
| } |
| |
| static gboolean |
| gst_video_aggregator_pad_prepare_frame (GstVideoAggregatorPad * pad, |
| GstVideoAggregator * vagg) |
| { |
| guint outsize; |
| GstVideoFrame *converted_frame; |
| GstBuffer *converted_buf = NULL; |
| GstVideoFrame *frame; |
| static GstAllocationParams params = { 0, 15, 0, 0, }; |
| |
| if (!pad->buffer) |
| return TRUE; |
| |
| frame = g_slice_new0 (GstVideoFrame); |
| |
| if (!gst_video_frame_map (frame, &pad->buffer_vinfo, pad->buffer, |
| GST_MAP_READ)) { |
| GST_WARNING_OBJECT (vagg, "Could not map input buffer"); |
| return FALSE; |
| } |
| |
| if (pad->priv->convert) { |
| gint converted_size; |
| |
| converted_frame = g_slice_new0 (GstVideoFrame); |
| |
| /* We wait until here to set the conversion infos, in case vagg->info changed */ |
| converted_size = pad->priv->conversion_info.size; |
| outsize = GST_VIDEO_INFO_SIZE (&vagg->info); |
| converted_size = converted_size > outsize ? converted_size : outsize; |
| converted_buf = gst_buffer_new_allocate (NULL, converted_size, ¶ms); |
| |
| if (!gst_video_frame_map (converted_frame, &(pad->priv->conversion_info), |
| converted_buf, GST_MAP_READWRITE)) { |
| GST_WARNING_OBJECT (vagg, "Could not map converted frame"); |
| |
| g_slice_free (GstVideoFrame, converted_frame); |
| gst_video_frame_unmap (frame); |
| g_slice_free (GstVideoFrame, frame); |
| return FALSE; |
| } |
| |
| gst_video_converter_frame (pad->priv->convert, frame, converted_frame); |
| pad->priv->converted_buffer = converted_buf; |
| gst_video_frame_unmap (frame); |
| g_slice_free (GstVideoFrame, frame); |
| } else { |
| converted_frame = frame; |
| } |
| |
| pad->aggregated_frame = converted_frame; |
| |
| return TRUE; |
| } |
| |
| static void |
| gst_video_aggregator_pad_clean_frame (GstVideoAggregatorPad * pad, |
| GstVideoAggregator * vagg) |
| { |
| if (pad->aggregated_frame) { |
| gst_video_frame_unmap (pad->aggregated_frame); |
| g_slice_free (GstVideoFrame, pad->aggregated_frame); |
| pad->aggregated_frame = NULL; |
| } |
| |
| if (pad->priv->converted_buffer) { |
| gst_buffer_unref (pad->priv->converted_buffer); |
| pad->priv->converted_buffer = NULL; |
| } |
| } |
| |
| static void |
| gst_videoaggregator_pad_class_init (GstVideoAggregatorPadClass * klass) |
| { |
| GObjectClass *gobject_class = (GObjectClass *) klass; |
| GstAggregatorPadClass *aggpadclass = (GstAggregatorPadClass *) klass; |
| |
| gobject_class->set_property = gst_videoaggregator_pad_set_property; |
| gobject_class->get_property = gst_videoaggregator_pad_get_property; |
| gobject_class->finalize = gst_videoaggregator_pad_finalize; |
| |
| g_object_class_install_property (gobject_class, PROP_PAD_ZORDER, |
| g_param_spec_uint ("zorder", "Z-Order", "Z Order of the picture", |
| 0, G_MAXUINT, DEFAULT_PAD_ZORDER, |
| G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_PAD_IGNORE_EOS, |
| g_param_spec_boolean ("ignore-eos", "Ignore EOS", "Aggregate the last " |
| "frame on pads that are EOS till they are released", |
| DEFAULT_PAD_IGNORE_EOS, |
| G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); |
| |
| g_type_class_add_private (klass, sizeof (GstVideoAggregatorPadPrivate)); |
| |
| aggpadclass->flush = GST_DEBUG_FUNCPTR (_flush_pad); |
| klass->set_info = GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_set_info); |
| klass->prepare_frame = |
| GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_prepare_frame); |
| klass->clean_frame = GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_clean_frame); |
| } |
| |
| static void |
| gst_videoaggregator_pad_init (GstVideoAggregatorPad * vaggpad) |
| { |
| vaggpad->priv = |
| G_TYPE_INSTANCE_GET_PRIVATE (vaggpad, GST_TYPE_VIDEO_AGGREGATOR_PAD, |
| GstVideoAggregatorPadPrivate); |
| |
| vaggpad->zorder = DEFAULT_PAD_ZORDER; |
| vaggpad->ignore_eos = DEFAULT_PAD_IGNORE_EOS; |
| vaggpad->aggregated_frame = NULL; |
| vaggpad->priv->converted_buffer = NULL; |
| |
| vaggpad->priv->convert = NULL; |
| } |
| |
| /********************************* |
| * GstChildProxy implementation * |
| *********************************/ |
| static GObject * |
| gst_videoaggregator_child_proxy_get_child_by_index (GstChildProxy * child_proxy, |
| guint index) |
| { |
| GObject *obj; |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (child_proxy); |
| |
| GST_OBJECT_LOCK (vagg); |
| if ((obj = g_list_nth_data (GST_ELEMENT (vagg)->sinkpads, index))) |
| g_object_ref (obj); |
| GST_OBJECT_UNLOCK (vagg); |
| |
| return obj; |
| } |
| |
| static guint |
| gst_videoaggregator_child_proxy_get_children_count (GstChildProxy * child_proxy) |
| { |
| guint count = 0; |
| |
| GST_OBJECT_LOCK (child_proxy); |
| count = GST_ELEMENT (child_proxy)->numsinkpads; |
| GST_OBJECT_UNLOCK (child_proxy); |
| |
| GST_INFO_OBJECT (child_proxy, "Children Count: %d", count); |
| |
| return count; |
| } |
| |
| static void |
| gst_videoaggregator_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_videoaggregator_child_proxy_get_child_by_index; |
| iface->get_children_count = |
| gst_videoaggregator_child_proxy_get_children_count; |
| } |
| |
| /************************************** |
| * GstVideoAggregator implementation * |
| **************************************/ |
| |
| #define GST_VIDEO_AGGREGATOR_GET_LOCK(vagg) (&GST_VIDEO_AGGREGATOR(vagg)->priv->lock) |
| |
| #define GST_VIDEO_AGGREGATOR_LOCK(vagg) G_STMT_START { \ |
| GST_LOG_OBJECT (vagg, "Taking EVENT lock from thread %p", \ |
| g_thread_self()); \ |
| g_mutex_lock(GST_VIDEO_AGGREGATOR_GET_LOCK(vagg)); \ |
| GST_LOG_OBJECT (vagg, "Took EVENT lock from thread %p", \ |
| g_thread_self()); \ |
| } G_STMT_END |
| |
| #define GST_VIDEO_AGGREGATOR_UNLOCK(vagg) G_STMT_START { \ |
| GST_LOG_OBJECT (vagg, "Releasing EVENT lock from thread %p", \ |
| g_thread_self()); \ |
| g_mutex_unlock(GST_VIDEO_AGGREGATOR_GET_LOCK(vagg)); \ |
| GST_LOG_OBJECT (vagg, "Took EVENT lock from thread %p", \ |
| g_thread_self()); \ |
| } G_STMT_END |
| |
| |
| struct _GstVideoAggregatorPrivate |
| { |
| /* Lock to prevent the state to change while aggregating */ |
| GMutex lock; |
| |
| /* Current downstream segment */ |
| GstClockTime ts_offset; |
| guint64 nframes; |
| |
| /* QoS stuff */ |
| gdouble proportion; |
| GstClockTime earliest_time; |
| guint64 qos_processed, qos_dropped; |
| |
| /* current caps */ |
| GstCaps *current_caps; |
| |
| gboolean live; |
| }; |
| |
| /* Can't use the G_DEFINE_TYPE macros because we need the |
| * videoaggregator class in the _init to be able to set |
| * the sink pad non-alpha caps. Using the G_DEFINE_TYPE there |
| * seems to be no way of getting the real class being initialized */ |
| static void gst_videoaggregator_init (GstVideoAggregator * self, |
| GstVideoAggregatorClass * klass); |
| static void gst_videoaggregator_class_init (GstVideoAggregatorClass * klass); |
| static gpointer gst_videoaggregator_parent_class = NULL; |
| |
| GType |
| gst_videoaggregator_get_type (void) |
| { |
| static volatile gsize g_define_type_id_volatile = 0; |
| |
| if (g_once_init_enter (&g_define_type_id_volatile)) { |
| GType g_define_type_id = g_type_register_static_simple (GST_TYPE_AGGREGATOR, |
| g_intern_static_string ("GstVideoAggregator"), |
| sizeof (GstVideoAggregatorClass), |
| (GClassInitFunc) gst_videoaggregator_class_init, |
| sizeof (GstVideoAggregator), |
| (GInstanceInitFunc) gst_videoaggregator_init, |
| (GTypeFlags) G_TYPE_FLAG_ABSTRACT); |
| { |
| G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY, |
| gst_videoaggregator_child_proxy_init); |
| } |
| g_once_init_leave (&g_define_type_id_volatile, g_define_type_id); |
| } |
| return g_define_type_id_volatile; |
| } |
| |
| static void |
| gst_videoaggreagator_find_best_format (GstVideoAggregator * vagg, |
| GstCaps * downstream_caps, GstVideoInfo * best_info, |
| gboolean * at_least_one_alpha) |
| { |
| GList *tmp; |
| GstCaps *possible_caps; |
| GstVideoAggregatorPad *pad; |
| gboolean need_alpha = FALSE; |
| gint best_format_number = 0; |
| GHashTable *formats_table = g_hash_table_new (g_direct_hash, g_direct_equal); |
| |
| GST_OBJECT_LOCK (vagg); |
| for (tmp = GST_ELEMENT (vagg)->sinkpads; tmp; tmp = tmp->next) { |
| GstStructure *s; |
| gint format_number; |
| |
| pad = tmp->data; |
| |
| if (!pad->info.finfo) |
| continue; |
| |
| if (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA) |
| *at_least_one_alpha = TRUE; |
| |
| /* If we want alpha, disregard all the other formats */ |
| if (need_alpha && !(pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) |
| continue; |
| |
| /* This can happen if we release a pad and another pad hasn't been negotiated_caps yet */ |
| if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN) |
| continue; |
| |
| possible_caps = gst_video_info_to_caps (&pad->info); |
| |
| s = gst_caps_get_structure (possible_caps, 0); |
| gst_structure_remove_fields (s, "width", "height", "framerate", |
| "pixel-aspect-ratio", "interlace-mode", NULL); |
| |
| /* Can downstream accept this format ? */ |
| if (!gst_caps_can_intersect (downstream_caps, possible_caps)) { |
| gst_caps_unref (possible_caps); |
| continue; |
| } |
| |
| gst_caps_unref (possible_caps); |
| |
| format_number = |
| GPOINTER_TO_INT (g_hash_table_lookup (formats_table, |
| GINT_TO_POINTER (GST_VIDEO_INFO_FORMAT (&pad->info)))); |
| format_number += 1; |
| |
| g_hash_table_replace (formats_table, |
| GINT_TO_POINTER (GST_VIDEO_INFO_FORMAT (&pad->info)), |
| GINT_TO_POINTER (format_number)); |
| |
| /* If that pad is the first with alpha, set it as the new best format */ |
| if (!need_alpha && (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) { |
| need_alpha = TRUE; |
| *best_info = pad->info; |
| best_format_number = format_number; |
| } else if (format_number > best_format_number) { |
| *best_info = pad->info; |
| best_format_number = format_number; |
| } |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| |
| g_hash_table_unref (formats_table); |
| } |
| |
| /* WITH GST_VIDEO_AGGREGATOR_LOCK TAKEN |
| * NOTE: After calling that method you **have to** call |
| * gst_videoaggregator_update_src_caps (without releasing |
| * the GST_VIDEO_AGGREGATOR_LOCK in between) |
| */ |
| static gboolean |
| gst_videoaggregator_update_converters (GstVideoAggregator * vagg) |
| { |
| GList *tmp; |
| GstVideoFormat best_format; |
| GstVideoInfo best_info; |
| gboolean at_least_one_alpha = FALSE; |
| GstCaps *downstream_caps; |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| |
| GstVideoAggregatorClass *vagg_class = GST_VIDEO_AGGREGATOR_GET_CLASS (vagg); |
| GstVideoAggregatorPadClass *vaggpad_class = g_type_class_peek |
| (GST_AGGREGATOR_GET_CLASS (vagg)->sinkpads_type); |
| |
| best_format = GST_VIDEO_FORMAT_UNKNOWN; |
| gst_video_info_init (&best_info); |
| |
| downstream_caps = gst_pad_get_allowed_caps (agg->srcpad); |
| |
| if (!downstream_caps || gst_caps_is_empty (downstream_caps)) { |
| GST_INFO_OBJECT (vagg, "No downstream caps found %" |
| GST_PTR_FORMAT, downstream_caps); |
| if (downstream_caps) |
| gst_caps_unref (downstream_caps); |
| return FALSE; |
| } |
| |
| |
| if (vagg_class->find_best_format) { |
| vagg_class->find_best_format (vagg, downstream_caps, &best_info, |
| &at_least_one_alpha); |
| |
| best_format = GST_VIDEO_INFO_FORMAT (&best_info); |
| } |
| |
| if (best_format == GST_VIDEO_FORMAT_UNKNOWN) { |
| downstream_caps = gst_caps_fixate (downstream_caps); |
| gst_video_info_from_caps (&best_info, downstream_caps); |
| best_format = GST_VIDEO_INFO_FORMAT (&best_info); |
| } |
| |
| gst_caps_unref (downstream_caps); |
| |
| if (at_least_one_alpha |
| && !(best_info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) { |
| GST_ELEMENT_ERROR (vagg, CORE, NEGOTIATION, |
| ("At least one of the input pads contains alpha, but downstream can't support alpha."), |
| ("Either convert your inputs to not contain alpha or add a videoconvert after the aggregator")); |
| return FALSE; |
| } |
| |
| vagg->info = best_info; |
| |
| GST_DEBUG_OBJECT (vagg, |
| "The output format will now be : %d with chroma : %s", |
| best_format, gst_video_chroma_to_string (best_info.chroma_site)); |
| |
| if (vaggpad_class->set_info) { |
| GST_OBJECT_LOCK (vagg); |
| /* Then browse the sinks once more, setting or unsetting conversion if needed */ |
| for (tmp = GST_ELEMENT (vagg)->sinkpads; tmp; tmp = tmp->next) { |
| GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (tmp->data); |
| |
| if (!vaggpad_class->set_info (pad, vagg, &pad->info, &best_info)) { |
| GST_OBJECT_UNLOCK (vagg); |
| |
| return FALSE; |
| } |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| } |
| |
| return TRUE; |
| } |
| |
| /* WITH GST_VIDEO_AGGREGATOR_LOCK TAKEN */ |
| static gboolean |
| gst_videoaggregator_src_setcaps (GstVideoAggregator * vagg, GstCaps * caps) |
| { |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| gboolean ret = FALSE; |
| GstVideoInfo info; |
| |
| GstPad *pad = GST_AGGREGATOR (vagg)->srcpad; |
| |
| GST_INFO_OBJECT (pad, "set src caps: %" GST_PTR_FORMAT, caps); |
| |
| if (!gst_video_info_from_caps (&info, caps)) |
| goto done; |
| |
| ret = TRUE; |
| |
| if (GST_VIDEO_INFO_FPS_N (&vagg->info) != GST_VIDEO_INFO_FPS_N (&info) || |
| GST_VIDEO_INFO_FPS_D (&vagg->info) != GST_VIDEO_INFO_FPS_D (&info)) { |
| if (agg->segment.position != -1) { |
| vagg->priv->nframes = 0; |
| /* The timestamp offset will be updated based on the |
| * segment position the next time we aggregate */ |
| GST_DEBUG_OBJECT (vagg, |
| "Resetting frame counter because of framerate change"); |
| } |
| gst_videoaggregator_reset_qos (vagg); |
| } |
| |
| vagg->info = info; |
| |
| if (vagg->priv->current_caps == NULL || |
| gst_caps_is_equal (caps, vagg->priv->current_caps) == FALSE) { |
| GstClockTime latency; |
| |
| gst_caps_replace (&vagg->priv->current_caps, caps); |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| |
| gst_aggregator_set_src_caps (agg, caps); |
| latency = gst_util_uint64_scale (GST_SECOND, |
| GST_VIDEO_INFO_FPS_D (&info), GST_VIDEO_INFO_FPS_N (&info)); |
| gst_aggregator_set_latency (agg, latency, latency); |
| |
| GST_VIDEO_AGGREGATOR_LOCK (vagg); |
| } |
| |
| done: |
| return ret; |
| } |
| |
| /* WITH GST_VIDEO_AGGREGATOR_LOCK TAKEN */ |
| static gboolean |
| gst_videoaggregator_update_src_caps (GstVideoAggregator * vagg) |
| { |
| GList *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; |
| GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg); |
| GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass; |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| |
| GST_OBJECT_LOCK (vagg); |
| for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) { |
| GstVideoAggregatorPad *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 (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; |
| } |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| |
| if (best_fps_n <= 0 || best_fps_d <= 0 || best_fps == 0.0) { |
| 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, *info_caps; |
| GstStructure *s; |
| GstVideoInfo info; |
| int i; |
| |
| /* Initialize the video info with our target format and |
| * the best width and height and framerate. Then copy over |
| * all other fields as we negotiated them before |
| */ |
| gst_video_info_set_format (&info, GST_VIDEO_INFO_FORMAT (&vagg->info), |
| best_width, best_height); |
| info.fps_n = best_fps_n; |
| info.fps_d = best_fps_d; |
| info.chroma_site = vagg->info.chroma_site; |
| info.par_n = vagg->info.par_n; |
| info.par_d = vagg->info.par_d; |
| info.colorimetry = vagg->info.colorimetry; |
| info.flags = vagg->info.flags; |
| info.interlace_mode = vagg->info.interlace_mode; |
| |
| info_caps = gst_video_info_to_caps (&info); |
| |
| if (vagg_klass->update_caps) { |
| if (!(caps = vagg_klass->update_caps (vagg, info_caps))) { |
| gst_caps_unref (info_caps); |
| ret = FALSE; |
| goto done; |
| } |
| gst_caps_unref (info_caps); |
| } else { |
| caps = info_caps; |
| } |
| |
| /* If the sub-class allows it, allow size/framerate changes */ |
| if (!vagg_klass->preserve_update_caps_result) { |
| s = gst_caps_get_structure (caps, 0); |
| gst_structure_get (s, "width", G_TYPE_INT, &best_width, "height", |
| G_TYPE_INT, &best_height, NULL); |
| |
| for (i = 0; i < gst_caps_get_size (caps); i++) { |
| s = gst_caps_get_structure (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); |
| } |
| } |
| |
| peercaps = gst_pad_peer_query_caps (agg->srcpad, caps); |
| if (peercaps) { |
| GstCaps *tmp; |
| |
| tmp = gst_caps_intersect (caps, peercaps); |
| GST_DEBUG_OBJECT (vagg, "intersecting %" GST_PTR_FORMAT |
| " with peer caps %" GST_PTR_FORMAT " result %" GST_PTR_FORMAT, caps, |
| peercaps, tmp); |
| |
| gst_caps_unref (caps); |
| gst_caps_unref (peercaps); |
| caps = tmp; /* pass ownership */ |
| if (gst_caps_is_empty (caps)) { |
| GST_DEBUG_OBJECT (vagg, "empty caps"); |
| ret = FALSE; |
| gst_caps_unref (caps); |
| 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_fixate_field_nearest_fraction (s, "pixel-aspect-ratio", 1, |
| 1); |
| |
| /* fixate the the rest of the fields */ |
| caps = gst_caps_fixate (caps); |
| |
| gst_structure_get_int (s, "width", &info.width); |
| gst_structure_get_int (s, "height", &info.height); |
| gst_structure_get_fraction (s, "framerate", &info.fps_n, &info.fps_d); |
| } |
| |
| if (gst_videoaggregator_src_setcaps (vagg, caps)) { |
| if (vagg_klass->negotiated_caps) |
| ret = |
| GST_VIDEO_AGGREGATOR_GET_CLASS (vagg)->negotiated_caps (vagg, caps); |
| } |
| gst_caps_unref (caps); |
| } else { |
| /* We couldn't decide the output video info because the sinkpads don't have |
| * all the caps yet, so we mark the pad as needing a reconfigure. This |
| * allows aggregate() to skip ahead a bit and try again later. */ |
| GST_DEBUG_OBJECT (vagg, "Couldn't decide output video info"); |
| gst_pad_mark_reconfigure (agg->srcpad); |
| ret = FALSE; |
| } |
| |
| done: |
| return ret; |
| } |
| |
| static gboolean |
| gst_videoaggregator_pad_sink_setcaps (GstPad * pad, GstObject * parent, |
| GstCaps * caps) |
| { |
| GstVideoAggregator *vagg; |
| GstVideoAggregatorPad *vaggpad; |
| GstVideoInfo info; |
| gboolean ret = FALSE; |
| |
| GST_INFO_OBJECT (pad, "Setting caps %" GST_PTR_FORMAT, caps); |
| |
| vagg = GST_VIDEO_AGGREGATOR (parent); |
| vaggpad = GST_VIDEO_AGGREGATOR_PAD (pad); |
| |
| if (!gst_video_info_from_caps (&info, caps)) { |
| GST_DEBUG_OBJECT (pad, "Failed to parse caps"); |
| goto beach; |
| } |
| |
| GST_VIDEO_AGGREGATOR_LOCK (vagg); |
| if (GST_VIDEO_INFO_FORMAT (&vagg->info) != GST_VIDEO_FORMAT_UNKNOWN) { |
| if (GST_VIDEO_INFO_INTERLACE_MODE (&vagg->info) != |
| GST_VIDEO_INFO_INTERLACE_MODE (&info)) { |
| GST_ERROR_OBJECT (pad, |
| "got input caps %" GST_PTR_FORMAT ", but " "current caps are %" |
| GST_PTR_FORMAT, caps, vagg->priv->current_caps); |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| return FALSE; |
| } |
| } |
| |
| vaggpad->info = info; |
| gst_pad_mark_reconfigure (GST_AGGREGATOR_SRC_PAD (vagg)); |
| ret = TRUE; |
| |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| |
| beach: |
| return ret; |
| } |
| |
| static gboolean |
| gst_videoaggregator_caps_has_alpha (GstCaps * caps) |
| { |
| guint size = gst_caps_get_size (caps); |
| guint i; |
| |
| for (i = 0; i < size; i++) { |
| GstStructure *s = gst_caps_get_structure (caps, i); |
| const GValue *formats = gst_structure_get_value (s, "format"); |
| |
| if (formats) { |
| const GstVideoFormatInfo *info; |
| |
| if (GST_VALUE_HOLDS_LIST (formats)) { |
| guint list_size = gst_value_list_get_size (formats); |
| guint index; |
| |
| for (index = 0; index < list_size; index++) { |
| const GValue *list_item = gst_value_list_get_value (formats, index); |
| info = |
| gst_video_format_get_info (gst_video_format_from_string |
| (g_value_get_string (list_item))); |
| if (GST_VIDEO_FORMAT_INFO_HAS_ALPHA (info)) |
| return TRUE; |
| } |
| |
| } else if (G_VALUE_HOLDS_STRING (formats)) { |
| info = |
| gst_video_format_get_info (gst_video_format_from_string |
| (g_value_get_string (formats))); |
| if (GST_VIDEO_FORMAT_INFO_HAS_ALPHA (info)) |
| return TRUE; |
| |
| } else { |
| g_assert_not_reached (); |
| GST_WARNING ("Unexpected type for video 'format' field: %s", |
| G_VALUE_TYPE_NAME (formats)); |
| } |
| |
| } else { |
| return TRUE; |
| } |
| } |
| return FALSE; |
| } |
| |
| static GstCaps * |
| gst_videoaggregator_pad_sink_getcaps (GstPad * pad, GstVideoAggregator * vagg, |
| GstCaps * filter) |
| { |
| GstCaps *srccaps; |
| GstCaps *template_caps, *sink_template_caps; |
| GstCaps *returned_caps; |
| GstStructure *s; |
| gint i, n; |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| GstPad *srcpad = GST_PAD (agg->srcpad); |
| gboolean has_alpha; |
| |
| template_caps = gst_pad_get_pad_template_caps (srcpad); |
| |
| GST_DEBUG_OBJECT (pad, "Get caps with filter: %" GST_PTR_FORMAT, filter); |
| |
| srccaps = gst_pad_get_current_caps (srcpad); |
| if (srccaps == NULL) { |
| srccaps = gst_pad_peer_query_caps (srcpad, template_caps); |
| GST_DEBUG_OBJECT (pad, "No output caps, using possible formats: %" |
| GST_PTR_FORMAT, srccaps); |
| } else { |
| GST_DEBUG_OBJECT (pad, "Using output caps: %" GST_PTR_FORMAT, srccaps); |
| } |
| |
| srccaps = gst_caps_make_writable (srccaps); |
| has_alpha = gst_videoaggregator_caps_has_alpha (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); |
| |
| gst_structure_remove_fields (s, "colorimetry", "chroma-site", "format", |
| "pixel-aspect-ratio", NULL); |
| } |
| |
| if (filter) { |
| returned_caps = gst_caps_intersect (srccaps, filter); |
| gst_caps_unref (srccaps); |
| } else { |
| returned_caps = srccaps; |
| } |
| |
| if (has_alpha) { |
| sink_template_caps = gst_pad_get_pad_template_caps (pad); |
| } else { |
| GstVideoAggregatorClass *klass = GST_VIDEO_AGGREGATOR_GET_CLASS (vagg); |
| sink_template_caps = gst_caps_ref (klass->sink_non_alpha_caps); |
| } |
| |
| { |
| GstCaps *intersect = gst_caps_intersect (returned_caps, sink_template_caps); |
| gst_caps_unref (returned_caps); |
| returned_caps = intersect; |
| } |
| |
| gst_caps_unref (template_caps); |
| gst_caps_unref (sink_template_caps); |
| |
| GST_DEBUG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, returned_caps); |
| |
| return returned_caps; |
| } |
| |
| static void |
| gst_videoaggregator_update_qos (GstVideoAggregator * vagg, gdouble proportion, |
| GstClockTimeDiff diff, GstClockTime timestamp) |
| { |
| gboolean live; |
| |
| GST_DEBUG_OBJECT (vagg, |
| "Updating QoS: proportion %lf, diff %" GST_STIME_FORMAT ", timestamp %" |
| GST_TIME_FORMAT, proportion, GST_STIME_ARGS (diff), |
| GST_TIME_ARGS (timestamp)); |
| |
| live = |
| GST_CLOCK_TIME_IS_VALID (gst_aggregator_get_latency (GST_AGGREGATOR |
| (vagg))); |
| |
| GST_OBJECT_LOCK (vagg); |
| |
| vagg->priv->proportion = proportion; |
| if (G_LIKELY (timestamp != GST_CLOCK_TIME_NONE)) { |
| if (!live && G_UNLIKELY (diff > 0)) |
| vagg->priv->earliest_time = |
| timestamp + 2 * diff + gst_util_uint64_scale_int_round (GST_SECOND, |
| GST_VIDEO_INFO_FPS_D (&vagg->info), |
| GST_VIDEO_INFO_FPS_N (&vagg->info)); |
| else |
| vagg->priv->earliest_time = timestamp + diff; |
| } else { |
| vagg->priv->earliest_time = GST_CLOCK_TIME_NONE; |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| } |
| |
| static void |
| gst_videoaggregator_reset_qos (GstVideoAggregator * vagg) |
| { |
| gst_videoaggregator_update_qos (vagg, 0.5, 0, GST_CLOCK_TIME_NONE); |
| vagg->priv->qos_processed = vagg->priv->qos_dropped = 0; |
| } |
| |
| static void |
| gst_videoaggregator_read_qos (GstVideoAggregator * vagg, gdouble * proportion, |
| GstClockTime * time) |
| { |
| GST_OBJECT_LOCK (vagg); |
| *proportion = vagg->priv->proportion; |
| *time = vagg->priv->earliest_time; |
| GST_OBJECT_UNLOCK (vagg); |
| } |
| |
| static void |
| gst_videoaggregator_reset (GstVideoAggregator * vagg) |
| { |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| GList *l; |
| |
| gst_video_info_init (&vagg->info); |
| vagg->priv->ts_offset = 0; |
| vagg->priv->nframes = 0; |
| vagg->priv->live = FALSE; |
| |
| agg->segment.position = -1; |
| |
| gst_videoaggregator_reset_qos (vagg); |
| |
| GST_OBJECT_LOCK (vagg); |
| for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) { |
| GstVideoAggregatorPad *p = l->data; |
| |
| gst_buffer_replace (&p->buffer, NULL); |
| p->priv->start_time = -1; |
| p->priv->end_time = -1; |
| |
| gst_video_info_init (&p->info); |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| } |
| |
| #define GST_FLOW_NEEDS_DATA GST_FLOW_CUSTOM_ERROR |
| static gint |
| gst_videoaggregator_fill_queues (GstVideoAggregator * vagg, |
| GstClockTime output_start_running_time, |
| GstClockTime output_end_running_time) |
| { |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| GList *l; |
| gboolean eos = TRUE; |
| gboolean need_more_data = FALSE; |
| |
| /* get a set of buffers into pad->buffer that are within output_start_running_time |
| * and output_end_running_time taking into account finished and unresponsive pads */ |
| |
| GST_OBJECT_LOCK (vagg); |
| for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) { |
| GstVideoAggregatorPad *pad = l->data; |
| GstSegment segment; |
| GstAggregatorPad *bpad; |
| GstBuffer *buf; |
| GstVideoInfo *vinfo; |
| gboolean is_eos; |
| |
| bpad = GST_AGGREGATOR_PAD (pad); |
| GST_OBJECT_LOCK (bpad); |
| segment = bpad->segment; |
| GST_OBJECT_UNLOCK (bpad); |
| is_eos = gst_aggregator_pad_is_eos (bpad); |
| |
| if (!is_eos) |
| eos = FALSE; |
| buf = gst_aggregator_pad_get_buffer (bpad); |
| if (buf) { |
| GstClockTime start_time, end_time; |
| |
| start_time = GST_BUFFER_TIMESTAMP (buf); |
| if (start_time == -1) { |
| gst_buffer_unref (buf); |
| GST_DEBUG_OBJECT (pad, "Need timestamped buffers!"); |
| GST_OBJECT_UNLOCK (vagg); |
| return GST_FLOW_ERROR; |
| } |
| |
| vinfo = &pad->info; |
| |
| /* FIXME: Make all this work with negative rates */ |
| end_time = GST_BUFFER_DURATION (buf); |
| |
| if (end_time == -1) { |
| start_time = MAX (start_time, segment.start); |
| start_time = |
| gst_segment_to_running_time (&segment, GST_FORMAT_TIME, start_time); |
| |
| if (start_time >= output_end_running_time) { |
| if (pad->buffer) { |
| GST_DEBUG_OBJECT (pad, "buffer duration is -1, start_time >= " |
| "output_end_running_time. Keeping previous buffer"); |
| } else { |
| GST_DEBUG_OBJECT (pad, "buffer duration is -1, start_time >= " |
| "output_end_running_time. No previous buffer, need more data"); |
| need_more_data = TRUE; |
| } |
| gst_buffer_unref (buf); |
| continue; |
| } else if (start_time < output_start_running_time) { |
| GST_DEBUG_OBJECT (pad, "buffer duration is -1, start_time < " |
| "output_start_running_time. Discarding old buffer"); |
| gst_buffer_replace (&pad->buffer, buf); |
| pad->buffer_vinfo = *vinfo; |
| gst_buffer_unref (buf); |
| gst_aggregator_pad_drop_buffer (bpad); |
| need_more_data = TRUE; |
| continue; |
| } |
| gst_buffer_unref (buf); |
| buf = gst_aggregator_pad_steal_buffer (bpad); |
| gst_buffer_replace (&pad->buffer, buf); |
| pad->buffer_vinfo = *vinfo; |
| /* FIXME: Set start_time and end_time to something here? */ |
| gst_buffer_unref (buf); |
| GST_DEBUG_OBJECT (pad, "buffer duration is -1"); |
| continue; |
| } |
| |
| g_assert (start_time != -1 && end_time != -1); |
| end_time += start_time; /* convert from duration to position */ |
| |
| /* Check if it's inside the segment */ |
| if (start_time >= segment.stop || end_time < segment.start) { |
| GST_DEBUG_OBJECT (pad, |
| "Buffer outside the segment : segment: [%" GST_TIME_FORMAT " -- %" |
| GST_TIME_FORMAT "]" " Buffer [%" GST_TIME_FORMAT " -- %" |
| GST_TIME_FORMAT "]", GST_TIME_ARGS (segment.stop), |
| GST_TIME_ARGS (segment.start), GST_TIME_ARGS (start_time), |
| GST_TIME_ARGS (end_time)); |
| |
| gst_buffer_unref (buf); |
| gst_aggregator_pad_drop_buffer (bpad); |
| |
| 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 (agg->segment.rate) != 1.0) { |
| start_time *= ABS (agg->segment.rate); |
| end_time *= ABS (agg->segment.rate); |
| } |
| |
| GST_TRACE_OBJECT (pad, "dealing with buffer %p start %" GST_TIME_FORMAT |
| " end %" GST_TIME_FORMAT " out start %" GST_TIME_FORMAT |
| " out end %" GST_TIME_FORMAT, buf, GST_TIME_ARGS (start_time), |
| GST_TIME_ARGS (end_time), GST_TIME_ARGS (output_start_running_time), |
| GST_TIME_ARGS (output_end_running_time)); |
| |
| if (pad->priv->end_time != -1 && pad->priv->end_time > end_time) { |
| GST_DEBUG_OBJECT (pad, "Buffer from the past, dropping"); |
| gst_buffer_unref (buf); |
| gst_aggregator_pad_drop_buffer (bpad); |
| continue; |
| } |
| |
| if (end_time >= output_start_running_time |
| && start_time < output_end_running_time) { |
| GST_DEBUG_OBJECT (pad, |
| "Taking new buffer with start time %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (start_time)); |
| gst_buffer_replace (&pad->buffer, buf); |
| pad->buffer_vinfo = *vinfo; |
| pad->priv->start_time = start_time; |
| pad->priv->end_time = end_time; |
| |
| gst_buffer_unref (buf); |
| gst_aggregator_pad_drop_buffer (bpad); |
| eos = FALSE; |
| } else if (start_time >= output_end_running_time) { |
| GST_DEBUG_OBJECT (pad, "Keeping buffer until %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (start_time)); |
| gst_buffer_unref (buf); |
| eos = FALSE; |
| } else { |
| gst_buffer_replace (&pad->buffer, buf); |
| pad->buffer_vinfo = *vinfo; |
| pad->priv->start_time = start_time; |
| pad->priv->end_time = end_time; |
| GST_DEBUG_OBJECT (pad, |
| "replacing old buffer with a newer buffer, start %" GST_TIME_FORMAT |
| " out end %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time), |
| GST_TIME_ARGS (output_end_running_time)); |
| gst_buffer_unref (buf); |
| gst_aggregator_pad_drop_buffer (bpad); |
| |
| need_more_data = TRUE; |
| continue; |
| } |
| } else { |
| if (is_eos && pad->ignore_eos) { |
| eos = FALSE; |
| GST_DEBUG_OBJECT (pad, "ignoring EOS and re-using previous buffer"); |
| continue; |
| } |
| |
| if (pad->priv->end_time != -1) { |
| if (pad->priv->end_time <= output_start_running_time) { |
| pad->priv->start_time = pad->priv->end_time = -1; |
| if (is_eos) { |
| GST_DEBUG ("I just need more data"); |
| need_more_data = TRUE; |
| } |
| } else if (is_eos) { |
| eos = FALSE; |
| } |
| } else if (is_eos) { |
| gst_buffer_replace (&pad->buffer, NULL); |
| } |
| } |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| |
| if (need_more_data) |
| return GST_FLOW_NEEDS_DATA; |
| if (eos) |
| return GST_FLOW_EOS; |
| |
| return GST_FLOW_OK; |
| } |
| |
| static gboolean |
| sync_pad_values (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad) |
| { |
| GstAggregatorPad *bpad = GST_AGGREGATOR_PAD (pad); |
| GstClockTime timestamp; |
| gint64 stream_time; |
| |
| if (pad->buffer == NULL) |
| return TRUE; |
| |
| timestamp = GST_BUFFER_TIMESTAMP (pad->buffer); |
| GST_OBJECT_LOCK (bpad); |
| stream_time = gst_segment_to_stream_time (&bpad->segment, GST_FORMAT_TIME, |
| timestamp); |
| GST_OBJECT_UNLOCK (bpad); |
| |
| /* sync object properties on stream time */ |
| if (GST_CLOCK_TIME_IS_VALID (stream_time)) |
| gst_object_sync_values (GST_OBJECT (pad), stream_time); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| prepare_frames (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad) |
| { |
| GstVideoAggregatorPadClass *vaggpad_class = |
| GST_VIDEO_AGGREGATOR_PAD_GET_CLASS (pad); |
| |
| if (pad->buffer == NULL || !vaggpad_class->prepare_frame) |
| return TRUE; |
| |
| return vaggpad_class->prepare_frame (pad, vagg); |
| } |
| |
| static gboolean |
| clean_pad (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad) |
| { |
| GstVideoAggregatorPadClass *vaggpad_class = |
| GST_VIDEO_AGGREGATOR_PAD_GET_CLASS (pad); |
| |
| vaggpad_class->clean_frame (pad, vagg); |
| |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| gst_videoaggregator_do_aggregate (GstVideoAggregator * vagg, |
| GstClockTime output_start_time, GstClockTime output_end_time, |
| GstBuffer ** outbuf) |
| { |
| GstFlowReturn ret = GST_FLOW_OK; |
| GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg); |
| GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass; |
| GstVideoAggregatorPadClass *vaggpad_class = g_type_class_peek |
| (GST_AGGREGATOR_CLASS (klass)->sinkpads_type); |
| |
| g_assert (vagg_klass->aggregate_frames != NULL); |
| g_assert (vagg_klass->get_output_buffer != NULL); |
| |
| if ((ret = vagg_klass->get_output_buffer (vagg, outbuf)) != GST_FLOW_OK) { |
| GST_WARNING_OBJECT (vagg, "Could not get an output buffer, reason: %s", |
| gst_flow_get_name (ret)); |
| return ret; |
| } |
| if (*outbuf == NULL) { |
| /* sub-class doesn't want to generate output right now */ |
| return GST_FLOW_OK; |
| } |
| |
| GST_BUFFER_TIMESTAMP (*outbuf) = output_start_time; |
| GST_BUFFER_DURATION (*outbuf) = output_end_time - output_start_time; |
| |
| /* Sync pad properties to the stream time */ |
| gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg), |
| (GstAggregatorPadForeachFunc) sync_pad_values, NULL); |
| |
| /* Convert all the frames the subclass has before aggregating */ |
| gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg), |
| (GstAggregatorPadForeachFunc) prepare_frames, NULL); |
| |
| ret = vagg_klass->aggregate_frames (vagg, *outbuf); |
| |
| if (vaggpad_class->clean_frame) { |
| gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg), |
| (GstAggregatorPadForeachFunc) clean_pad, NULL); |
| } |
| |
| return ret; |
| } |
| |
| /* 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_videoaggregator_do_qos (GstVideoAggregator * vagg, GstClockTime timestamp) |
| { |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| 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 (vagg, "invalid timestamp, can't do QoS, process frame"); |
| return -1; |
| } |
| |
| /* get latest QoS observation values */ |
| gst_videoaggregator_read_qos (vagg, &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 (vagg, "no observation yet, process frame"); |
| return -1; |
| } |
| |
| /* qos is done on running time */ |
| qostime = |
| gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME, timestamp); |
| |
| /* see how our next timestamp relates to the latest qos timestamp */ |
| GST_LOG_OBJECT (vagg, "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 (vagg, "we are late, drop frame"); |
| return jitter; |
| } |
| |
| GST_LOG_OBJECT (vagg, "process frame"); |
| return jitter; |
| } |
| |
| static GstClockTime |
| gst_videoaggregator_get_next_time (GstAggregator * agg) |
| { |
| GstClockTime next_time; |
| |
| GST_OBJECT_LOCK (agg); |
| if (agg->segment.position == -1 || agg->segment.position < agg->segment.start) |
| next_time = agg->segment.start; |
| else |
| next_time = agg->segment.position; |
| |
| if (agg->segment.stop != -1 && next_time > agg->segment.stop) |
| next_time = agg->segment.stop; |
| |
| next_time = |
| gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME, next_time); |
| GST_OBJECT_UNLOCK (agg); |
| |
| return next_time; |
| } |
| |
| static GstFlowReturn |
| gst_videoaggregator_check_reconfigure (GstVideoAggregator * vagg, |
| gboolean timeout) |
| { |
| GstAggregator *agg = (GstAggregator *) vagg; |
| |
| if (GST_VIDEO_INFO_FORMAT (&vagg->info) == GST_VIDEO_FORMAT_UNKNOWN |
| || gst_pad_check_reconfigure (GST_AGGREGATOR_SRC_PAD (vagg))) { |
| gboolean ret; |
| |
| ret = gst_videoaggregator_update_converters (vagg); |
| if (ret) |
| ret = gst_videoaggregator_update_src_caps (vagg); |
| |
| if (!ret) { |
| if (timeout && gst_pad_needs_reconfigure (GST_AGGREGATOR_SRC_PAD (vagg))) { |
| guint64 frame_duration; |
| gint fps_d, fps_n; |
| |
| GST_DEBUG_OBJECT (vagg, |
| "Got timeout before receiving any caps, don't output anything"); |
| |
| if (agg->segment.position == -1) { |
| if (agg->segment.rate > 0.0) |
| agg->segment.position = agg->segment.start; |
| else |
| agg->segment.position = agg->segment.stop; |
| } |
| |
| /* Advance position */ |
| fps_d = GST_VIDEO_INFO_FPS_D (&vagg->info) ? |
| GST_VIDEO_INFO_FPS_D (&vagg->info) : 1; |
| fps_n = GST_VIDEO_INFO_FPS_N (&vagg->info) ? |
| GST_VIDEO_INFO_FPS_N (&vagg->info) : 25; |
| /* Default to 25/1 if no "best fps" is known */ |
| frame_duration = gst_util_uint64_scale (GST_SECOND, fps_d, fps_n); |
| if (agg->segment.rate > 0.0) |
| agg->segment.position += frame_duration; |
| else if (agg->segment.position > frame_duration) |
| agg->segment.position -= frame_duration; |
| else |
| agg->segment.position = 0; |
| vagg->priv->nframes++; |
| return GST_FLOW_NEEDS_DATA; |
| } else { |
| return GST_FLOW_NOT_NEGOTIATED; |
| } |
| } |
| } |
| |
| return GST_FLOW_OK; |
| } |
| |
| static GstFlowReturn |
| gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| GstClockTime output_start_time, output_end_time; |
| GstClockTime output_start_running_time, output_end_running_time; |
| GstBuffer *outbuf = NULL; |
| GstFlowReturn flow_ret; |
| gint64 jitter; |
| |
| GST_VIDEO_AGGREGATOR_LOCK (vagg); |
| |
| flow_ret = gst_videoaggregator_check_reconfigure (vagg, timeout); |
| if (flow_ret != GST_FLOW_OK) { |
| if (flow_ret == GST_FLOW_NEEDS_DATA) |
| flow_ret = GST_FLOW_OK; |
| goto unlock_and_return; |
| } |
| |
| output_start_time = agg->segment.position; |
| if (agg->segment.position == -1 || agg->segment.position < agg->segment.start) |
| output_start_time = agg->segment.start; |
| |
| if (vagg->priv->nframes == 0) { |
| vagg->priv->ts_offset = output_start_time; |
| GST_DEBUG_OBJECT (vagg, "New ts offset %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (output_start_time)); |
| } |
| |
| if (GST_VIDEO_INFO_FPS_N (&vagg->info) == 0) { |
| output_end_time = -1; |
| } else { |
| output_end_time = |
| vagg->priv->ts_offset + |
| gst_util_uint64_scale_round (vagg->priv->nframes + 1, |
| GST_SECOND * GST_VIDEO_INFO_FPS_D (&vagg->info), |
| GST_VIDEO_INFO_FPS_N (&vagg->info)); |
| } |
| |
| if (agg->segment.stop != -1) |
| output_end_time = MIN (output_end_time, agg->segment.stop); |
| |
| output_start_running_time = |
| gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME, |
| output_start_time); |
| output_end_running_time = |
| gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME, |
| output_end_time); |
| |
| if (output_end_time == output_start_time) { |
| flow_ret = GST_FLOW_EOS; |
| } else { |
| flow_ret = |
| gst_videoaggregator_fill_queues (vagg, output_start_running_time, |
| output_end_running_time); |
| } |
| |
| if (flow_ret == GST_FLOW_NEEDS_DATA && !timeout) { |
| GST_DEBUG_OBJECT (vagg, "Need more data for decisions"); |
| flow_ret = GST_FLOW_OK; |
| goto unlock_and_return; |
| } else if (flow_ret == GST_FLOW_EOS) { |
| GST_DEBUG_OBJECT (vagg, "All sinkpads are EOS -- forwarding"); |
| goto unlock_and_return; |
| } else if (flow_ret == GST_FLOW_ERROR) { |
| GST_WARNING_OBJECT (vagg, "Error collecting buffers"); |
| goto unlock_and_return; |
| } |
| |
| GST_DEBUG_OBJECT (vagg, |
| "Producing buffer for %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT |
| ", running time start %" GST_TIME_FORMAT ", running time end %" |
| GST_TIME_FORMAT, GST_TIME_ARGS (output_start_time), |
| GST_TIME_ARGS (output_end_time), |
| GST_TIME_ARGS (output_start_running_time), |
| GST_TIME_ARGS (output_end_running_time)); |
| |
| jitter = gst_videoaggregator_do_qos (vagg, output_start_time); |
| if (jitter <= 0) { |
| flow_ret = gst_videoaggregator_do_aggregate (vagg, output_start_time, |
| output_end_time, &outbuf); |
| if (flow_ret != GST_FLOW_OK) |
| goto done; |
| vagg->priv->qos_processed++; |
| } else { |
| GstMessage *msg; |
| |
| vagg->priv->qos_dropped++; |
| |
| msg = |
| gst_message_new_qos (GST_OBJECT_CAST (vagg), vagg->priv->live, |
| output_start_running_time, gst_segment_to_stream_time (&agg->segment, |
| GST_FORMAT_TIME, output_start_time), output_start_time, |
| output_end_time - output_start_time); |
| gst_message_set_qos_values (msg, jitter, vagg->priv->proportion, 1000000); |
| gst_message_set_qos_stats (msg, GST_FORMAT_BUFFERS, |
| vagg->priv->qos_processed, vagg->priv->qos_dropped); |
| gst_element_post_message (GST_ELEMENT_CAST (vagg), msg); |
| |
| flow_ret = GST_FLOW_OK; |
| } |
| |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| if (outbuf) { |
| GST_DEBUG_OBJECT (vagg, |
| "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))); |
| |
| flow_ret = gst_aggregator_finish_buffer (agg, outbuf); |
| } |
| |
| GST_VIDEO_AGGREGATOR_LOCK (vagg); |
| vagg->priv->nframes++; |
| agg->segment.position = output_end_time; |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| |
| return flow_ret; |
| |
| done: |
| if (outbuf) |
| gst_buffer_unref (outbuf); |
| unlock_and_return: |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| return flow_ret; |
| } |
| |
| /* FIXME, the duration query should reflect how long you will produce |
| * data, that is the amount of stream time until you will emit EOS. |
| * |
| * For synchronized aggregating this is always the max of all the durations |
| * of upstream since we emit EOS when all of them finished. |
| * |
| * We don't do synchronized aggregating so this really depends on where the |
| * streams where punched in and what their relative offsets are against |
| * each other which we can get from the first timestamps we see. |
| * |
| * When we add a new stream (or remove a stream) the duration might |
| * also become invalid again and we need to post a new DURATION |
| * message to notify this fact to the parent. |
| * For now we take the max of all the upstream elements so the simple |
| * cases work at least somewhat. |
| */ |
| static gboolean |
| gst_videoaggregator_query_duration (GstVideoAggregator * vagg, 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 (vagg)); |
| while (!done) { |
| switch (gst_iterator_next (it, &item)) { |
| case GST_ITERATOR_DONE: |
| done = TRUE; |
| break; |
| case GST_ITERATOR_OK: |
| { |
| GstPad *pad; |
| gint64 duration; |
| |
| pad = g_value_get_object (&item); |
| |
| /* ask sink peer for duration */ |
| res &= gst_pad_peer_query_duration (pad, format, &duration); |
| /* take max from all valid return values */ |
| if (res) { |
| /* valid unknown length, stop searching */ |
| if (duration == -1) { |
| max = duration; |
| done = TRUE; |
| } |
| /* else see if bigger than current max */ |
| else if (duration > max) |
| max = duration; |
| } |
| g_value_reset (&item); |
| break; |
| } |
| case GST_ITERATOR_RESYNC: |
| max = -1; |
| res = TRUE; |
| gst_iterator_resync (it); |
| break; |
| default: |
| res = FALSE; |
| done = TRUE; |
| break; |
| } |
| } |
| g_value_unset (&item); |
| gst_iterator_free (it); |
| |
| if (res) { |
| /* and store the max */ |
| GST_DEBUG_OBJECT (vagg, "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_videoaggregator_src_query (GstAggregator * agg, GstQuery * query) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| 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 (&agg->segment, GST_FORMAT_TIME, |
| agg->segment.position)); |
| res = TRUE; |
| break; |
| default: |
| break; |
| } |
| break; |
| } |
| case GST_QUERY_DURATION: |
| res = gst_videoaggregator_query_duration (vagg, query); |
| break; |
| case GST_QUERY_LATENCY: |
| res = |
| GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->src_query |
| (agg, query); |
| |
| if (res) { |
| gst_query_parse_latency (query, &vagg->priv->live, NULL, NULL); |
| } |
| break; |
| default: |
| res = |
| GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->src_query |
| (agg, query); |
| break; |
| } |
| return res; |
| } |
| |
| static gboolean |
| gst_videoaggregator_src_event (GstAggregator * agg, GstEvent * event) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| |
| 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_videoaggregator_update_qos (vagg, proportion, diff, timestamp); |
| break; |
| } |
| case GST_EVENT_SEEK: |
| { |
| GST_DEBUG_OBJECT (vagg, "Handling SEEK event"); |
| } |
| default: |
| break; |
| } |
| |
| return |
| GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->src_event (agg, |
| event); |
| } |
| |
| static GstFlowReturn |
| gst_videoaggregator_flush (GstAggregator * agg) |
| { |
| GList *l; |
| gdouble abs_rate; |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| |
| GST_INFO_OBJECT (agg, "Flushing"); |
| GST_OBJECT_LOCK (vagg); |
| abs_rate = ABS (agg->segment.rate); |
| for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) { |
| GstVideoAggregatorPad *p = l->data; |
| |
| /* Convert to the output segment rate */ |
| if (ABS (agg->segment.rate) != abs_rate) { |
| if (ABS (agg->segment.rate) != 1.0 && p->buffer) { |
| p->priv->start_time /= ABS (agg->segment.rate); |
| p->priv->end_time /= ABS (agg->segment.rate); |
| } |
| if (abs_rate != 1.0 && p->buffer) { |
| p->priv->start_time *= abs_rate; |
| p->priv->end_time *= abs_rate; |
| } |
| } |
| } |
| GST_OBJECT_UNLOCK (vagg); |
| |
| agg->segment.position = -1; |
| vagg->priv->ts_offset = 0; |
| vagg->priv->nframes = 0; |
| |
| gst_videoaggregator_reset_qos (vagg); |
| return GST_FLOW_OK; |
| } |
| |
| static gboolean |
| gst_videoaggregator_sink_event (GstAggregator * agg, GstAggregatorPad * bpad, |
| GstEvent * event) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (bpad); |
| 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_videoaggregator_pad_sink_setcaps (GST_PAD (pad), |
| GST_OBJECT (vagg), caps); |
| gst_event_unref (event); |
| event = NULL; |
| break; |
| } |
| case GST_EVENT_SEGMENT:{ |
| GstSegment seg; |
| gst_event_copy_segment (event, &seg); |
| |
| g_assert (seg.format == GST_FORMAT_TIME); |
| gst_videoaggregator_reset_qos (vagg); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| if (event != NULL) |
| return GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->sink_event |
| (agg, bpad, event); |
| |
| return ret; |
| } |
| |
| static gboolean |
| gst_videoaggregator_start (GstAggregator * agg) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| |
| gst_caps_replace (&vagg->priv->current_caps, NULL); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_videoaggregator_stop (GstAggregator * agg) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| |
| gst_videoaggregator_reset (vagg); |
| |
| return TRUE; |
| } |
| |
| /* GstElement vmethods */ |
| static GstPad * |
| gst_videoaggregator_request_new_pad (GstElement * element, |
| GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps) |
| { |
| GstVideoAggregator *vagg; |
| GstVideoAggregatorPad *vaggpad; |
| |
| vagg = GST_VIDEO_AGGREGATOR (element); |
| |
| vaggpad = (GstVideoAggregatorPad *) |
| GST_ELEMENT_CLASS (gst_videoaggregator_parent_class)->request_new_pad |
| (element, templ, req_name, caps); |
| |
| if (vaggpad == NULL) |
| return NULL; |
| |
| GST_OBJECT_LOCK (vagg); |
| vaggpad->zorder = GST_ELEMENT (vagg)->numsinkpads; |
| vaggpad->priv->start_time = -1; |
| vaggpad->priv->end_time = -1; |
| element->sinkpads = g_list_sort (element->sinkpads, |
| (GCompareFunc) pad_zorder_compare); |
| GST_OBJECT_UNLOCK (vagg); |
| |
| gst_child_proxy_child_added (GST_CHILD_PROXY (vagg), G_OBJECT (vaggpad), |
| GST_OBJECT_NAME (vaggpad)); |
| |
| return GST_PAD (vaggpad); |
| } |
| |
| static void |
| gst_videoaggregator_release_pad (GstElement * element, GstPad * pad) |
| { |
| GstVideoAggregator *vagg = NULL; |
| GstVideoAggregatorPad *vaggpad; |
| gboolean last_pad; |
| |
| vagg = GST_VIDEO_AGGREGATOR (element); |
| vaggpad = GST_VIDEO_AGGREGATOR_PAD (pad); |
| |
| GST_VIDEO_AGGREGATOR_LOCK (vagg); |
| |
| GST_OBJECT_LOCK (vagg); |
| last_pad = (GST_ELEMENT (vagg)->numsinkpads - 1 == 0); |
| GST_OBJECT_UNLOCK (vagg); |
| |
| if (last_pad) |
| gst_videoaggregator_reset (vagg); |
| |
| gst_buffer_replace (&vaggpad->buffer, NULL); |
| |
| gst_child_proxy_child_removed (GST_CHILD_PROXY (vagg), G_OBJECT (vaggpad), |
| GST_OBJECT_NAME (vaggpad)); |
| |
| GST_ELEMENT_CLASS (gst_videoaggregator_parent_class)->release_pad (GST_ELEMENT |
| (vagg), pad); |
| |
| gst_pad_mark_reconfigure (GST_AGGREGATOR_SRC_PAD (vagg)); |
| |
| GST_VIDEO_AGGREGATOR_UNLOCK (vagg); |
| return; |
| } |
| |
| static GstFlowReturn |
| gst_videoaggregator_get_output_buffer (GstVideoAggregator * videoaggregator, |
| GstBuffer ** outbuf) |
| { |
| guint outsize; |
| static GstAllocationParams params = { 0, 15, 0, 0, }; |
| |
| outsize = GST_VIDEO_INFO_SIZE (&videoaggregator->info); |
| *outbuf = gst_buffer_new_allocate (NULL, outsize, ¶ms); |
| |
| if (*outbuf == NULL) { |
| GST_ERROR_OBJECT (videoaggregator, |
| "Could not instantiate buffer of size: %d", outsize); |
| } |
| |
| return GST_FLOW_OK; |
| } |
| |
| static gboolean |
| gst_videoaggregator_pad_sink_acceptcaps (GstPad * pad, |
| GstVideoAggregator * vagg, GstCaps * caps) |
| { |
| gboolean ret; |
| GstCaps *modified_caps; |
| GstCaps *accepted_caps; |
| GstCaps *template_caps; |
| gboolean had_current_caps = TRUE; |
| gint i, n; |
| GstStructure *s; |
| GstAggregator *agg = GST_AGGREGATOR (vagg); |
| |
| GST_DEBUG_OBJECT (pad, "%" GST_PTR_FORMAT, caps); |
| |
| accepted_caps = gst_pad_get_current_caps (GST_PAD (agg->srcpad)); |
| |
| template_caps = gst_pad_get_pad_template_caps (GST_PAD (agg->srcpad)); |
| |
| if (accepted_caps == NULL) { |
| accepted_caps = template_caps; |
| had_current_caps = FALSE; |
| } |
| |
| accepted_caps = gst_caps_make_writable (accepted_caps); |
| |
| GST_LOG_OBJECT (pad, "src caps %" GST_PTR_FORMAT, accepted_caps); |
| |
| n = gst_caps_get_size (accepted_caps); |
| for (i = 0; i < n; i++) { |
| s = gst_caps_get_structure (accepted_caps, i); |
| gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, |
| "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, |
| "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); |
| |
| gst_structure_remove_fields (s, "colorimetry", "chroma-site", "format", |
| "pixel-aspect-ratio", NULL); |
| } |
| |
| modified_caps = gst_caps_intersect (accepted_caps, template_caps); |
| |
| ret = gst_caps_can_intersect (caps, accepted_caps); |
| GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT, |
| (ret ? "" : "not "), caps); |
| gst_caps_unref (accepted_caps); |
| gst_caps_unref (modified_caps); |
| if (had_current_caps) |
| gst_caps_unref (template_caps); |
| return ret; |
| } |
| |
| static gboolean |
| gst_videoaggregator_sink_query (GstAggregator * agg, GstAggregatorPad * bpad, |
| GstQuery * query) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); |
| GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (bpad); |
| gboolean ret = FALSE; |
| |
| switch (GST_QUERY_TYPE (query)) { |
| case GST_QUERY_CAPS: |
| { |
| GstCaps *filter, *caps; |
| |
| gst_query_parse_caps (query, &filter); |
| caps = gst_videoaggregator_pad_sink_getcaps (GST_PAD (pad), vagg, 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_videoaggregator_pad_sink_acceptcaps (GST_PAD (pad), vagg, caps); |
| gst_query_set_accept_caps_result (query, ret); |
| ret = TRUE; |
| break; |
| } |
| default: |
| ret = |
| GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->sink_query |
| (agg, bpad, query); |
| break; |
| } |
| return ret; |
| } |
| |
| /* GObject vmethods */ |
| static void |
| gst_videoaggregator_finalize (GObject * o) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (o); |
| |
| g_mutex_clear (&vagg->priv->lock); |
| |
| G_OBJECT_CLASS (gst_videoaggregator_parent_class)->finalize (o); |
| } |
| |
| static void |
| gst_videoaggregator_dispose (GObject * o) |
| { |
| GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (o); |
| |
| gst_caps_replace (&vagg->priv->current_caps, NULL); |
| |
| G_OBJECT_CLASS (gst_videoaggregator_parent_class)->dispose (o); |
| } |
| |
| static void |
| gst_videoaggregator_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_videoaggregator_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; |
| } |
| } |
| |
| /* GObject boilerplate */ |
| static void |
| gst_videoaggregator_class_init (GstVideoAggregatorClass * klass) |
| { |
| GObjectClass *gobject_class = (GObjectClass *) klass; |
| GstElementClass *gstelement_class = (GstElementClass *) klass; |
| GstAggregatorClass *agg_class = (GstAggregatorClass *) klass; |
| |
| GST_DEBUG_CATEGORY_INIT (gst_videoaggregator_debug, "videoaggregator", 0, |
| "base video aggregator"); |
| |
| gst_videoaggregator_parent_class = g_type_class_peek_parent (klass); |
| |
| g_type_class_add_private (klass, sizeof (GstVideoAggregatorPrivate)); |
| |
| gobject_class->finalize = gst_videoaggregator_finalize; |
| gobject_class->dispose = gst_videoaggregator_dispose; |
| |
| gobject_class->get_property = gst_videoaggregator_get_property; |
| gobject_class->set_property = gst_videoaggregator_set_property; |
| |
| gstelement_class->request_new_pad = |
| GST_DEBUG_FUNCPTR (gst_videoaggregator_request_new_pad); |
| gstelement_class->release_pad = |
| GST_DEBUG_FUNCPTR (gst_videoaggregator_release_pad); |
| |
| agg_class->sinkpads_type = GST_TYPE_VIDEO_AGGREGATOR_PAD; |
| agg_class->start = gst_videoaggregator_start; |
| agg_class->stop = gst_videoaggregator_stop; |
| agg_class->sink_query = gst_videoaggregator_sink_query; |
| agg_class->sink_event = gst_videoaggregator_sink_event; |
| agg_class->flush = gst_videoaggregator_flush; |
| agg_class->aggregate = gst_videoaggregator_aggregate; |
| agg_class->src_event = gst_videoaggregator_src_event; |
| agg_class->src_query = gst_videoaggregator_src_query; |
| agg_class->get_next_time = gst_videoaggregator_get_next_time; |
| |
| klass->find_best_format = gst_videoaggreagator_find_best_format; |
| klass->get_output_buffer = gst_videoaggregator_get_output_buffer; |
| |
| /* Register the pad class */ |
| g_type_class_ref (GST_TYPE_VIDEO_AGGREGATOR_PAD); |
| } |
| |
| static inline GstCaps * |
| _get_non_alpha_caps_from_template (GstVideoAggregatorClass * klass) |
| { |
| GstCaps *result; |
| GstCaps *templatecaps; |
| guint i, size; |
| |
| templatecaps = |
| gst_pad_template_get_caps (gst_element_class_get_pad_template |
| (GST_ELEMENT_CLASS (klass), "sink_%u")); |
| |
| size = gst_caps_get_size (templatecaps); |
| result = gst_caps_new_empty (); |
| for (i = 0; i < size; i++) { |
| GstStructure *s = gst_caps_get_structure (templatecaps, i); |
| const GValue *formats = gst_structure_get_value (s, "format"); |
| GValue new_formats = { 0, }; |
| gboolean has_format = FALSE; |
| |
| /* FIXME what to do if formats are missing? */ |
| if (formats) { |
| const GstVideoFormatInfo *info; |
| |
| if (GST_VALUE_HOLDS_LIST (formats)) { |
| guint list_size = gst_value_list_get_size (formats); |
| guint index; |
| |
| g_value_init (&new_formats, GST_TYPE_LIST); |
| |
| for (index = 0; index < list_size; index++) { |
| const GValue *list_item = gst_value_list_get_value (formats, index); |
| |
| info = |
| gst_video_format_get_info (gst_video_format_from_string |
| (g_value_get_string (list_item))); |
| if (!GST_VIDEO_FORMAT_INFO_HAS_ALPHA (info)) { |
| has_format = TRUE; |
| gst_value_list_append_value (&new_formats, list_item); |
| } |
| } |
| |
| } else if (G_VALUE_HOLDS_STRING (formats)) { |
| info = |
| gst_video_format_get_info (gst_video_format_from_string |
| (g_value_get_string (formats))); |
| if (!GST_VIDEO_FORMAT_INFO_HAS_ALPHA (info)) { |
| has_format = TRUE; |
| gst_value_init_and_copy (&new_formats, formats); |
| } |
| |
| } else { |
| g_assert_not_reached (); |
| GST_WARNING ("Unexpected type for video 'format' field: %s", |
| G_VALUE_TYPE_NAME (formats)); |
| } |
| |
| if (has_format) { |
| s = gst_structure_copy (s); |
| gst_structure_take_value (s, "format", &new_formats); |
| gst_caps_append_structure (result, s); |
| } |
| |
| } |
| } |
| |
| gst_caps_unref (templatecaps); |
| |
| return result; |
| } |
| |
| static GMutex sink_caps_mutex; |
| |
| static void |
| gst_videoaggregator_init (GstVideoAggregator * vagg, |
| GstVideoAggregatorClass * klass) |
| { |
| |
| vagg->priv = |
| G_TYPE_INSTANCE_GET_PRIVATE (vagg, GST_TYPE_VIDEO_AGGREGATOR, |
| GstVideoAggregatorPrivate); |
| |
| vagg->priv->current_caps = NULL; |
| |
| g_mutex_init (&vagg->priv->lock); |
| |
| /* initialize variables */ |
| g_mutex_lock (&sink_caps_mutex); |
| if (klass->sink_non_alpha_caps == NULL) { |
| klass->sink_non_alpha_caps = _get_non_alpha_caps_from_template (klass); |
| } |
| g_mutex_unlock (&sink_caps_mutex); |
| |
| gst_videoaggregator_reset (vagg); |
| } |