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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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c506748c6f
The upstream selectable query was not performed in all situations where we handle the stream-start event. This could potentially lead to unlinked pads between decodebin3 and encodebin later on. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5089>
1103 lines
31 KiB
C
1103 lines
31 KiB
C
/* GStreamer
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* Copyright (C) 2019 Thibault Saunier <tsaunier@igalia.com>
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*
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* gsttranscodebin.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gsttranscoding.h"
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#include "gsttranscodeelements.h"
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#include <glib/gi18n-lib.h>
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#include <gst/pbutils/pbutils.h>
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#include <gst/pbutils/missing-plugins.h>
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/**
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* GstTranscodeBin!sink_%u:
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*
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* Extra sinkpads for the parallel transcoding of auxiliary streams.
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*
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* Since: 1.20
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*/
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static GstStaticPadTemplate transcode_bin_sinks_template =
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GST_STATIC_PAD_TEMPLATE ("sink_%u",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate transcode_bin_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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/**
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* GstTranscodeBin!src_%u:
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*
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* The sometimes source pad, it will be exposed depending on the
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* #transcodebin:profile in use.
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*
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* Note: in GStreamer 1.18 it was a static
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* srcpad but in the the 1.20 cycle it was decided that we should make it a
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* sometimes pad as part of the development of #encodebin2.
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*
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* Since: 1.20
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*/
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static GstStaticPadTemplate transcode_bin_src_template =
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GST_STATIC_PAD_TEMPLATE ("src_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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typedef struct
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{
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const gchar *stream_id;
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GstStream *stream;
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GstPad *encodebin_pad;
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} TranscodingStream;
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static TranscodingStream *
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transcoding_stream_new (GstStream * stream, GstPad * encodebin_pad)
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{
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TranscodingStream *tstream = g_new0 (TranscodingStream, 1);
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tstream->stream_id = gst_stream_get_stream_id (stream);
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tstream->stream = gst_object_ref (stream);
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tstream->encodebin_pad = encodebin_pad;
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return tstream;
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}
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static void
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transcoding_stream_free (TranscodingStream * tstream)
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{
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gst_object_unref (tstream->stream);
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gst_object_unref (tstream->encodebin_pad);
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g_free (tstream);
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}
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typedef struct
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{
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GstBin parent;
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GstElement *decodebin;
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GstElement *encodebin;
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GstEncodingProfile *profile;
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gboolean avoid_reencoding;
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GstPad *sinkpad;
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GstElement *audio_filter;
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GstElement *video_filter;
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GPtrArray *transcoding_streams;
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gboolean upstream_selected;
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} GstTranscodeBin;
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typedef struct
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{
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GstBinClass parent;
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} GstTranscodeBinClass;
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/* *INDENT-OFF* */
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#define GST_TYPE_TRANSCODE_BIN (gst_transcode_bin_get_type ())
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#define GST_TRANSCODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TRANSCODE_BIN, GstTranscodeBin))
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#define DEFAULT_AVOID_REENCODING FALSE
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GST_DEBUG_CATEGORY_STATIC(gst_transcodebin_debug);
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#define GST_CAT_DEFAULT gst_transcodebin_debug
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G_DEFINE_TYPE (GstTranscodeBin, gst_transcode_bin, GST_TYPE_BIN);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (transcodebin, "transcodebin", GST_RANK_NONE,
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GST_TYPE_TRANSCODE_BIN, transcodebin_element_init (plugin));
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static GstPad *
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get_encodebin_pad_from_stream (GstTranscodeBin * self, GstStream * stream);
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enum
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{
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PROP_0,
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PROP_PROFILE,
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PROP_AVOID_REENCODING,
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PROP_VIDEO_FILTER,
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PROP_AUDIO_FILTER,
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LAST_PROP
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};
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static void
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post_missing_plugin_error (GstElement * dec, const gchar * element_name)
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{
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GstMessage *msg;
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msg = gst_missing_element_message_new (dec, element_name);
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gst_element_post_message (dec, msg);
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GST_ELEMENT_ERROR (dec, CORE, MISSING_PLUGIN,
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("Missing element '%s' - check your GStreamer installation.",
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element_name), (NULL));
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}
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/* *INDENT-ON* */
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static gboolean
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filter_handles_any (GstElement * filter)
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{
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GList *tmp;
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for (tmp = gst_element_get_pad_template_list (filter); tmp; tmp = tmp->next) {
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GstPadTemplate *tmpl = tmp->data;
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GstCaps *caps = gst_pad_template_get_caps (tmpl);
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if (!gst_caps_is_any (caps)) {
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gst_caps_unref (caps);
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return FALSE;
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}
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gst_caps_unref (caps);
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}
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return gst_element_get_pad_template_list (filter) != NULL;
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}
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static GstPad *
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_insert_filter (GstTranscodeBin * self, GstPad * sinkpad, GstPad * pad,
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const GstCaps * filtercaps)
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{
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GstPad *filter_src = NULL, *filter_sink = NULL, *convert_sink, *convert_src;
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GstElement *filter = NULL, *convert;
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GstObject *filter_parent;
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const gchar *media_type;
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gboolean audio = TRUE;
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GstCaps *caps;
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media_type = gst_structure_get_name (gst_caps_get_structure (filtercaps, 0));
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if (self->video_filter && g_str_has_prefix (media_type, "video")) {
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audio = FALSE;
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if (!g_strcmp0 (media_type, "video/x-raw")
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|| filter_handles_any (self->video_filter))
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filter = self->video_filter;
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else
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GST_ERROR_OBJECT (pad, "decodebin pad does not produce raw data (%"
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GST_PTR_FORMAT "), cannot add video filter '%s'", filtercaps,
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GST_ELEMENT_NAME (self->video_filter));
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} else if (self->audio_filter && g_str_has_prefix (media_type, "audio")) {
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if (!g_strcmp0 (media_type, "audio/x-raw")
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|| filter_handles_any (self->audio_filter))
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filter = self->audio_filter;
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else
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GST_ERROR_OBJECT (pad, "decodebin pad does not produce raw data (%"
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GST_PTR_FORMAT "), cannot add audio filter '%s'", filtercaps,
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GST_ELEMENT_NAME (self->audio_filter));
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}
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if (!filter)
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return pad;
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filter_parent = gst_object_get_parent (GST_OBJECT (filter));
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if (filter_parent != GST_OBJECT_CAST (self)) {
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GST_WARNING_OBJECT (self,
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"Filter already in use (inside %" GST_PTR_FORMAT ").", filter_parent);
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GST_FIXME_OBJECT (self,
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"Handle transcoding several streams of a same kind.");
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gst_object_unref (filter_parent);
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return pad;
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}
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gst_object_unref (filter_parent);
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/* We are guaranteed filters only have 1 unique sinkpad and srcpad */
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GST_OBJECT_LOCK (filter);
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filter_sink = filter->sinkpads->data;
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filter_src = filter->srcpads->data;
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GST_OBJECT_UNLOCK (filter);
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if (filter_handles_any (filter))
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convert = gst_element_factory_make ("identity", NULL);
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else if (audio)
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convert = gst_element_factory_make ("audioconvert", NULL);
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else
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convert = gst_element_factory_make ("videoconvert", NULL);
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if (!convert) {
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GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN,
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(_("Missing element '%s' - check your GStreamer installation."),
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audio ? "audioconvert" : "videoconvert"),
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("Cannot add filter as %s element is missing",
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audio ? "audioconvert" : "videoconvert"));
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return pad;
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}
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gst_bin_add_many (GST_BIN (self), convert, NULL);
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convert_sink = gst_element_get_static_pad (convert, "sink");
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g_assert (convert_sink);
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if (G_UNLIKELY (gst_pad_link (pad, convert_sink) != GST_PAD_LINK_OK)) {
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GstCaps *othercaps = gst_pad_get_pad_template_caps (convert_sink);
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caps = gst_pad_get_current_caps (pad);
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GST_ELEMENT_ERROR (self, CORE, PAD,
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(NULL),
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("Couldn't link pads \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
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"\n\n and \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
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"\n\n", pad, caps, convert_sink, othercaps));
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gst_object_unref (convert_sink);
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gst_caps_unref (caps);
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gst_caps_unref (othercaps);
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}
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gst_object_unref (convert_sink);
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convert_src = gst_element_get_static_pad (convert, "src");
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g_assert (convert_src);
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if (G_UNLIKELY (gst_pad_link (convert_src, filter_sink) != GST_PAD_LINK_OK)) {
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GstCaps *othercaps = gst_pad_get_pad_template_caps (filter_sink);
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caps = gst_pad_get_pad_template_caps (convert_src);
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GST_ELEMENT_ERROR (self, CORE, PAD,
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(NULL),
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("Couldn't link pads \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
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"\n\n and \n\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
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"\n\n", convert_src, caps, filter_sink, othercaps));
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gst_object_unref (convert_src);
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gst_caps_unref (caps);
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gst_caps_unref (othercaps);
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}
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gst_object_unref (convert_src);
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gst_element_sync_state_with_parent (convert);
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gst_element_sync_state_with_parent (filter);
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GST_DEBUG_OBJECT (self, "added %s filter '%s'",
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audio ? "audio" : "video", GST_ELEMENT_NAME (filter));
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return filter_src;
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}
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static TranscodingStream *
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find_stream (GstTranscodeBin * self, const gchar * stream_id, GstPad * pad)
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{
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gint i;
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TranscodingStream *res = NULL;
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GST_OBJECT_LOCK (self);
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GST_DEBUG_OBJECT (self,
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"Looking for stream %s in %u existing transcoding streams",
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stream_id, self->transcoding_streams->len);
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for (i = 0; i < self->transcoding_streams->len; i = i + 1) {
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TranscodingStream *s = self->transcoding_streams->pdata[i];
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if (stream_id && !g_strcmp0 (s->stream_id, stream_id)) {
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res = s;
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goto done;
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} else if (pad && s->encodebin_pad == pad) {
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res = s;
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goto done;
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}
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}
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done:
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GST_OBJECT_UNLOCK (self);
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GST_DEBUG_OBJECT (self, "Look-up result: %p", res);
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return res;
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}
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static TranscodingStream *
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setup_stream (GstTranscodeBin * self, GstStream * stream)
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{
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TranscodingStream *res = NULL;
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GstPad *encodebin_pad = get_encodebin_pad_from_stream (self, stream);
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GST_DEBUG_OBJECT (self,
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"Encodebin pad for stream %" GST_PTR_FORMAT " : %" GST_PTR_FORMAT, stream,
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encodebin_pad);
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if (encodebin_pad) {
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GST_INFO_OBJECT (self,
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"Going to transcode stream %s (encodebin pad: %" GST_PTR_FORMAT ")",
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gst_stream_get_stream_id (stream), encodebin_pad);
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res = transcoding_stream_new (stream, encodebin_pad);
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GST_OBJECT_LOCK (self);
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g_ptr_array_add (self->transcoding_streams, res);
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GST_OBJECT_UNLOCK (self);
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}
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return res;
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}
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static void
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gst_transcode_bin_link_encodebin_pad (GstTranscodeBin * self, GstPad * pad,
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GstEvent * sstart)
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{
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GstCaps *caps, *filtercaps;
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GstPadLinkReturn lret;
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const gchar *stream_id;
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TranscodingStream *stream;
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gst_event_parse_stream_start (sstart, &stream_id);
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stream = find_stream (self, stream_id, NULL);
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if (!stream) {
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if (self->upstream_selected) {
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GstStream *tmpstream;
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gst_event_parse_stream (sstart, &tmpstream);
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stream = setup_stream (self, tmpstream);
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gst_object_unref (tmpstream);
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}
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if (!stream) {
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GST_ERROR_OBJECT (self, "Could not find any stream with ID: %s",
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stream_id);
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return;
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}
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}
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filtercaps = gst_pad_query_caps (pad, NULL);
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pad = _insert_filter (self, stream->encodebin_pad, pad, filtercaps);
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gst_caps_unref (filtercaps);
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lret = gst_pad_link (pad, stream->encodebin_pad);
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switch (lret) {
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case GST_PAD_LINK_OK:
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break;
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case GST_PAD_LINK_WAS_LINKED:
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GST_FIXME_OBJECT (self, "Pad %" GST_PTR_FORMAT " was already linked",
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stream->encodebin_pad);
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break;
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default:
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{
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GstCaps *othercaps = gst_pad_query_caps (stream->encodebin_pad, NULL);
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caps = gst_pad_get_current_caps (pad);
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if (!caps)
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caps = gst_pad_query_caps (pad, NULL);
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GST_ELEMENT_ERROR_WITH_DETAILS (self, CORE, PAD,
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(NULL),
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("Couldn't link pads:\n %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT
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"\nand:\n"
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" %" GST_PTR_FORMAT ": %" GST_PTR_FORMAT "\n\n Error: %s\n",
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pad, caps, stream->encodebin_pad, othercaps,
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gst_pad_link_get_name (lret)),
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("linking-error", GST_TYPE_PAD_LINK_RETURN, lret,
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"source-pad", GST_TYPE_PAD, pad,
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"source-caps", GST_TYPE_CAPS, caps,
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"sink-pad", GST_TYPE_PAD, stream->encodebin_pad,
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"sink-caps", GST_TYPE_CAPS, othercaps, NULL));
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gst_clear_caps (&caps);
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if (othercaps)
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gst_caps_unref (othercaps);
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}
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}
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}
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static void
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query_upstream_selectable (GstTranscodeBin * self, GstPad * pad)
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{
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GstQuery *query;
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gboolean result;
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/* Query whether upstream can handle stream selection or not */
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query = gst_query_new_selectable ();
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result = GST_PAD_IS_SINK (pad) ? gst_pad_peer_query (pad, query)
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: gst_pad_query (pad, query);
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if (result) {
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GST_FIXME_OBJECT (self,
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"We force `transcodebin` to upstream selection"
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" mode if *any* of the inputs is. This means things might break if"
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" there's a mix");
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gst_query_parse_selectable (query, &self->upstream_selected);
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GST_DEBUG_OBJECT (pad, "Upstream is selectable : %d",
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self->upstream_selected);
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} else {
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self->upstream_selected = FALSE;
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GST_DEBUG_OBJECT (pad, "Upstream does not handle SELECTABLE query");
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}
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gst_query_unref (query);
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}
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static GstPadProbeReturn
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wait_stream_start_probe (GstPad * pad,
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GstPadProbeInfo * info, GstTranscodeBin * self)
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{
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if (GST_EVENT_TYPE (info->data) != GST_EVENT_STREAM_START)
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return GST_PAD_PROBE_OK;
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GST_INFO_OBJECT (self,
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"Got pad %" GST_PTR_FORMAT " with stream:: %" GST_PTR_FORMAT, pad,
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info->data);
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query_upstream_selectable (self, pad);
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gst_transcode_bin_link_encodebin_pad (self, pad, info->data);
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return GST_PAD_PROBE_REMOVE;
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}
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static void
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decodebin_pad_added_cb (GstElement * decodebin, GstPad * pad,
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GstTranscodeBin * self)
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{
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const gchar *stream_id;
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GstEvent *sstart_event;
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if (GST_PAD_IS_SINK (pad))
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return;
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sstart_event = gst_pad_get_sticky_event (pad, GST_EVENT_STREAM_START, -1);
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if (sstart_event) {
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gst_event_parse_stream_start (sstart_event, &stream_id);
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GST_INFO_OBJECT (self, "Got pad %" GST_PTR_FORMAT " with stream ID: %s",
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pad, stream_id);
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query_upstream_selectable (self, pad);
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gst_transcode_bin_link_encodebin_pad (self, pad, sstart_event);
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return;
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}
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GST_INFO_OBJECT (self, "Waiting for stream ID for pad %" GST_PTR_FORMAT, pad);
|
|
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
|
|
(GstPadProbeCallback) wait_stream_start_probe, self, NULL);
|
|
}
|
|
|
|
static void
|
|
encodebin_pad_added_cb (GstElement * encodebin, GstPad * pad, GstElement * self)
|
|
{
|
|
GstPadTemplate *template;
|
|
GstPad *new_pad;
|
|
gchar *name;
|
|
|
|
if (!GST_PAD_IS_SRC (pad))
|
|
return;
|
|
|
|
template = gst_element_get_pad_template (self, "src_%u");
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
name = g_strdup_printf ("src_%u", GST_ELEMENT (self)->numsrcpads);
|
|
GST_OBJECT_UNLOCK (self);
|
|
new_pad = gst_ghost_pad_new_from_template (name, pad, template);
|
|
g_free (name);
|
|
GST_DEBUG_OBJECT (self, "Encodebin exposed srcpad: %" GST_PTR_FORMAT, pad);
|
|
|
|
gst_element_add_pad (self, new_pad);
|
|
}
|
|
|
|
static gboolean
|
|
make_encodebin (GstTranscodeBin * self)
|
|
{
|
|
GST_INFO_OBJECT (self, "making new encodebin");
|
|
|
|
if (!self->profile)
|
|
goto no_profile;
|
|
|
|
self->encodebin = gst_element_factory_make ("encodebin2", NULL);
|
|
if (!self->encodebin)
|
|
goto no_encodebin;
|
|
|
|
gst_bin_add (GST_BIN (self), self->encodebin);
|
|
|
|
g_signal_connect (self->encodebin, "pad-added",
|
|
G_CALLBACK (encodebin_pad_added_cb), self);
|
|
|
|
g_object_set (self->encodebin, "profile", self->profile, NULL);
|
|
|
|
return gst_element_sync_state_with_parent (self->encodebin);
|
|
|
|
/* ERRORS */
|
|
no_encodebin:
|
|
{
|
|
post_missing_plugin_error (GST_ELEMENT_CAST (self), "encodebin");
|
|
|
|
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
|
|
("No encodebin element, check your installation"));
|
|
|
|
return FALSE;
|
|
}
|
|
/* ERRORS */
|
|
no_profile:
|
|
{
|
|
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
|
|
("No GstEncodingProfile set, can not run."));
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static GstPad *
|
|
get_encodebin_pad_for_caps (GstTranscodeBin * self, const GstCaps * srccaps)
|
|
{
|
|
GstPad *res = NULL;
|
|
GstIterator *pads;
|
|
gboolean done = FALSE;
|
|
GValue paditem = { 0, };
|
|
|
|
if (G_UNLIKELY (srccaps == NULL))
|
|
goto no_caps;
|
|
|
|
pads = gst_element_iterate_sink_pads (self->encodebin);
|
|
|
|
GST_DEBUG_OBJECT (self, "srccaps %" GST_PTR_FORMAT, srccaps);
|
|
|
|
while (!done) {
|
|
switch (gst_iterator_next (pads, &paditem)) {
|
|
case GST_ITERATOR_OK:
|
|
{
|
|
GstPad *testpad = g_value_get_object (&paditem);
|
|
|
|
if (!gst_pad_is_linked (testpad) && !find_stream (self, NULL, testpad)) {
|
|
GstCaps *sinkcaps = gst_pad_query_caps (testpad, NULL);
|
|
|
|
GST_DEBUG_OBJECT (self, "sinkccaps %" GST_PTR_FORMAT, sinkcaps);
|
|
|
|
if (gst_caps_can_intersect (srccaps, sinkcaps)) {
|
|
res = gst_object_ref (testpad);
|
|
done = TRUE;
|
|
}
|
|
gst_caps_unref (sinkcaps);
|
|
}
|
|
g_value_reset (&paditem);
|
|
}
|
|
break;
|
|
case GST_ITERATOR_DONE:
|
|
case GST_ITERATOR_ERROR:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
gst_iterator_resync (pads);
|
|
break;
|
|
}
|
|
}
|
|
g_value_reset (&paditem);
|
|
gst_iterator_free (pads);
|
|
|
|
if (!res)
|
|
g_signal_emit_by_name (self->encodebin, "request-pad", srccaps, &res);
|
|
|
|
return res;
|
|
|
|
no_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (self, "No caps, can't do anything");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
caps_is_raw (GstCaps * caps, GstStreamType stype)
|
|
{
|
|
const gchar *media_type;
|
|
|
|
if (!caps || !gst_caps_get_size (caps))
|
|
return FALSE;
|
|
|
|
media_type = gst_structure_get_name (gst_caps_get_structure (caps, 0));
|
|
if (stype == GST_STREAM_TYPE_VIDEO)
|
|
return !g_strcmp0 (media_type, "video/x-raw");
|
|
else if (stype == GST_STREAM_TYPE_AUDIO)
|
|
return !g_strcmp0 (media_type, "audio/x-raw");
|
|
/* FIXME: Handle more types ? */
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static GstPad *
|
|
get_encodebin_pad_from_stream (GstTranscodeBin * self, GstStream * stream)
|
|
{
|
|
GstCaps *caps = gst_stream_get_caps (stream);
|
|
GstPad *sinkpad = get_encodebin_pad_for_caps (self, caps);
|
|
|
|
if (!sinkpad && !caps_is_raw (caps, gst_stream_get_stream_type (stream))) {
|
|
gst_clear_caps (&caps);
|
|
switch (gst_stream_get_stream_type (stream)) {
|
|
case GST_STREAM_TYPE_AUDIO:
|
|
caps = gst_caps_from_string ("audio/x-raw");
|
|
break;
|
|
case GST_STREAM_TYPE_VIDEO:
|
|
caps = gst_caps_from_string ("video/x-raw");
|
|
break;
|
|
default:
|
|
GST_INFO_OBJECT (self, "Unsupported stream type: %" GST_PTR_FORMAT,
|
|
stream);
|
|
return NULL;
|
|
}
|
|
sinkpad = get_encodebin_pad_for_caps (self, caps);
|
|
}
|
|
|
|
gst_caps_unref (caps);
|
|
return sinkpad;
|
|
}
|
|
|
|
static gint
|
|
select_stream_cb (GstElement * decodebin,
|
|
GstStreamCollection * collection, GstStream * stream,
|
|
GstTranscodeBin * self)
|
|
{
|
|
gint i;
|
|
gboolean transcode_stream = FALSE;
|
|
guint len = 0;
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
len = self->transcoding_streams->len;
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (len) {
|
|
transcode_stream =
|
|
find_stream (self, gst_stream_get_stream_id (stream), NULL) != NULL;
|
|
if (transcode_stream)
|
|
goto done;
|
|
}
|
|
|
|
for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
|
|
GstStream *tmpstream = gst_stream_collection_get_stream (collection, i);
|
|
|
|
if (setup_stream (self, tmpstream) && stream == tmpstream)
|
|
transcode_stream = TRUE;
|
|
}
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
len = self->transcoding_streams->len;
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (len) {
|
|
transcode_stream =
|
|
find_stream (self, gst_stream_get_stream_id (stream), NULL) != NULL;
|
|
}
|
|
|
|
done:
|
|
if (!transcode_stream)
|
|
GST_INFO_OBJECT (self, "Discarding stream: %" GST_PTR_FORMAT, stream);
|
|
|
|
return transcode_stream;
|
|
}
|
|
|
|
/* Called with OBJECT_LOCK */
|
|
static void
|
|
_setup_avoid_reencoding (GstTranscodeBin * self)
|
|
{
|
|
const GList *tmp;
|
|
GstCaps *decodecaps;
|
|
|
|
if (!self->avoid_reencoding)
|
|
return;
|
|
|
|
if (!GST_IS_ENCODING_CONTAINER_PROFILE (self->profile))
|
|
return;
|
|
|
|
g_object_get (self->decodebin, "caps", &decodecaps, NULL);
|
|
decodecaps = gst_caps_make_writable (decodecaps);
|
|
tmp =
|
|
gst_encoding_container_profile_get_profiles
|
|
(GST_ENCODING_CONTAINER_PROFILE (self->profile));
|
|
for (; tmp; tmp = tmp->next) {
|
|
GstEncodingProfile *profile = tmp->data;
|
|
GstCaps *restrictions, *encodecaps;
|
|
GstElement *filter = NULL;
|
|
|
|
restrictions = gst_encoding_profile_get_restriction (profile);
|
|
|
|
if (restrictions) {
|
|
gboolean is_any = gst_caps_is_any (restrictions);
|
|
gst_caps_unref (restrictions);
|
|
if (is_any)
|
|
continue;
|
|
}
|
|
|
|
encodecaps = gst_encoding_profile_get_format (profile);
|
|
filter = NULL;
|
|
|
|
/* Filter operates on raw data so don't allow decodebin to produce
|
|
* encoded data if one is defined. */
|
|
if (GST_IS_ENCODING_VIDEO_PROFILE (profile) && self->video_filter)
|
|
filter = self->video_filter;
|
|
else if (GST_IS_ENCODING_AUDIO_PROFILE (profile)
|
|
&& self->audio_filter)
|
|
filter = self->audio_filter;
|
|
|
|
if (!filter || filter_handles_any (filter)) {
|
|
GST_DEBUG_OBJECT (self,
|
|
"adding %" GST_PTR_FORMAT " as output caps to decodebin", encodecaps);
|
|
gst_caps_append (decodecaps, encodecaps);
|
|
}
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
g_object_set (self->decodebin, "caps", decodecaps, NULL);
|
|
gst_caps_unref (decodecaps);
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
}
|
|
|
|
static gboolean
|
|
make_decodebin (GstTranscodeBin * self)
|
|
{
|
|
GstPad *pad;
|
|
GST_INFO_OBJECT (self, "making new decodebin");
|
|
|
|
self->decodebin = gst_element_factory_make ("decodebin3", NULL);
|
|
|
|
g_signal_connect (self->decodebin, "pad-added",
|
|
G_CALLBACK (decodebin_pad_added_cb), self);
|
|
g_signal_connect (self->decodebin, "select-stream",
|
|
G_CALLBACK (select_stream_cb), self);
|
|
|
|
gst_bin_add (GST_BIN (self), self->decodebin);
|
|
pad = gst_element_get_static_pad (self->decodebin, "sink");
|
|
if (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), pad)) {
|
|
|
|
gst_object_unref (pad);
|
|
GST_ERROR_OBJECT (self, "Could not ghost %" GST_PTR_FORMAT " sinkpad",
|
|
self->decodebin);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gst_object_unref (pad);
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
}
|
|
|
|
static void
|
|
remove_all_children (GstTranscodeBin * self)
|
|
{
|
|
if (self->encodebin) {
|
|
gst_element_set_state (self->encodebin, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN (self), self->encodebin);
|
|
self->encodebin = NULL;
|
|
}
|
|
|
|
if (self->video_filter && GST_OBJECT_PARENT (self->video_filter)) {
|
|
gst_element_set_state (self->video_filter, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN (self), self->video_filter);
|
|
}
|
|
|
|
if (self->audio_filter && GST_OBJECT_PARENT (self->audio_filter)) {
|
|
gst_element_set_state (self->audio_filter, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN (self), self->audio_filter);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
sink_event_function (GstPad * sinkpad, GstTranscodeBin * self, GstEvent * event)
|
|
{
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_STREAM_START:
|
|
query_upstream_selectable (self, sinkpad);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return gst_pad_event_default (sinkpad, GST_OBJECT (self), event);
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_transcode_bin_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstTranscodeBin *self = GST_TRANSCODE_BIN (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
|
|
if (!self->decodebin) {
|
|
post_missing_plugin_error (GST_ELEMENT_CAST (self), "decodebin3");
|
|
GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
|
|
("No decodebin element, check your installation"));
|
|
|
|
goto setup_failed;
|
|
}
|
|
|
|
if (!make_encodebin (self))
|
|
goto setup_failed;
|
|
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret =
|
|
GST_ELEMENT_CLASS (gst_transcode_bin_parent_class)->change_state (element,
|
|
transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
goto beach;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
GST_OBJECT_LOCK (self);
|
|
g_ptr_array_remove_range (self->transcoding_streams, 0,
|
|
self->transcoding_streams->len);
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
g_signal_handlers_disconnect_by_data (self->decodebin, self);
|
|
|
|
remove_all_children (self);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
beach:
|
|
return ret;
|
|
|
|
setup_failed:
|
|
remove_all_children (self);
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
|
|
static void
|
|
gst_transcode_bin_dispose (GObject * object)
|
|
{
|
|
GstTranscodeBin *self = (GstTranscodeBin *) object;
|
|
|
|
g_clear_object (&self->video_filter);
|
|
g_clear_object (&self->audio_filter);
|
|
g_clear_pointer (&self->transcoding_streams, g_ptr_array_unref);
|
|
gst_clear_object (&self->profile);
|
|
|
|
G_OBJECT_CLASS (gst_transcode_bin_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_transcode_bin_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstTranscodeBin *self = GST_TRANSCODE_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PROFILE:
|
|
GST_OBJECT_LOCK (self);
|
|
g_value_set_object (value, self->profile);
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
case PROP_AVOID_REENCODING:
|
|
GST_OBJECT_LOCK (self);
|
|
g_value_set_boolean (value, self->avoid_reencoding);
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
case PROP_AUDIO_FILTER:
|
|
GST_OBJECT_LOCK (self);
|
|
g_value_set_object (value, self->audio_filter);
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
case PROP_VIDEO_FILTER:
|
|
GST_OBJECT_LOCK (self);
|
|
g_value_set_object (value, self->video_filter);
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
static GstPad *
|
|
gst_transcode_bin_request_pad (GstElement * element, GstPadTemplate * temp,
|
|
const gchar * name, const GstCaps * caps)
|
|
{
|
|
GstTranscodeBin *self = (GstTranscodeBin *) element;
|
|
GstPad *gpad, *decodebin_pad =
|
|
gst_element_request_pad_simple (self->decodebin, "sink_%u");
|
|
|
|
if (!decodebin_pad) {
|
|
GST_ERROR_OBJECT (element,
|
|
"Could not request decodebin3 pad for %" GST_PTR_FORMAT, caps);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
gpad = gst_ghost_pad_new_from_template (name, decodebin_pad, temp);
|
|
gst_pad_set_event_function (gpad, (GstPadEventFunction) sink_event_function);
|
|
gst_element_add_pad (element, GST_PAD (gpad));
|
|
gst_object_unref (decodebin_pad);
|
|
|
|
return gpad;
|
|
}
|
|
|
|
static void
|
|
_set_filter (GstTranscodeBin * self, GstElement * filter, GstElement ** mfilter)
|
|
{
|
|
if (filter) {
|
|
GST_OBJECT_LOCK (filter);
|
|
if (filter->numsinkpads != 1) {
|
|
GST_ERROR_OBJECT (self, "Can not use %" GST_PTR_FORMAT
|
|
" as filter as it does not have "
|
|
" one and only one sinkpad", filter);
|
|
goto bail_out;
|
|
} else if (filter->numsrcpads != 1) {
|
|
GST_ERROR_OBJECT (self, "Can not use %" GST_PTR_FORMAT
|
|
" as filter as it does not have " " one and only one srcpad", filter);
|
|
goto bail_out;
|
|
}
|
|
GST_OBJECT_UNLOCK (filter);
|
|
|
|
gst_bin_add (GST_BIN (self), gst_object_ref (filter));
|
|
}
|
|
|
|
GST_OBJECT_LOCK (self);
|
|
*mfilter = filter;
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
return;
|
|
|
|
bail_out:
|
|
GST_OBJECT_UNLOCK (filter);
|
|
}
|
|
|
|
static void
|
|
_set_profile (GstTranscodeBin * self, GstEncodingProfile * profile)
|
|
{
|
|
GST_OBJECT_LOCK (self);
|
|
self->profile = profile;
|
|
_setup_avoid_reencoding (self);
|
|
GST_OBJECT_UNLOCK (self);
|
|
}
|
|
|
|
static void
|
|
gst_transcode_bin_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstTranscodeBin *self = GST_TRANSCODE_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PROFILE:
|
|
_set_profile (self, g_value_dup_object (value));
|
|
break;
|
|
case PROP_AVOID_REENCODING:
|
|
GST_OBJECT_LOCK (self);
|
|
self->avoid_reencoding = g_value_get_boolean (value);
|
|
_setup_avoid_reencoding (self);
|
|
GST_OBJECT_UNLOCK (self);
|
|
break;
|
|
case PROP_AUDIO_FILTER:
|
|
_set_filter (self, g_value_dup_object (value), &self->audio_filter);
|
|
break;
|
|
case PROP_VIDEO_FILTER:
|
|
_set_filter (self, g_value_dup_object (value), &self->video_filter);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_transcode_bin_class_init (GstTranscodeBinClass * klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GstElementClass *gstelement_klass;
|
|
|
|
object_class->dispose = gst_transcode_bin_dispose;
|
|
object_class->get_property = gst_transcode_bin_get_property;
|
|
object_class->set_property = gst_transcode_bin_set_property;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_transcodebin_debug, "transcodebin", 0,
|
|
"Transcodebin element");
|
|
|
|
gstelement_klass = (GstElementClass *) klass;
|
|
gstelement_klass->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_transcode_bin_change_state);
|
|
gstelement_klass->request_new_pad =
|
|
GST_DEBUG_FUNCPTR (gst_transcode_bin_request_pad);
|
|
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&transcode_bin_sink_template));
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&transcode_bin_sinks_template));
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&transcode_bin_src_template));
|
|
|
|
gst_element_class_set_static_metadata (gstelement_klass,
|
|
"Transcode Bin", "Generic/Bin/Encoding",
|
|
"Autoplug and transcoder a stream",
|
|
"Thibault Saunier <tsaunier@igalia.com>");
|
|
|
|
/**
|
|
* GstTranscodeBin:profile:
|
|
*
|
|
* The #GstEncodingProfile to use. This property must be set before going
|
|
* to %GST_STATE_PAUSED or higher.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_PROFILE,
|
|
g_param_spec_object ("profile", "Profile",
|
|
"The GstEncodingProfile to use", GST_TYPE_ENCODING_PROFILE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
|
|
GST_PARAM_MUTABLE_READY));
|
|
|
|
/**
|
|
* GstTranscodeBin:avoid-reencoding:
|
|
*
|
|
* See #encodebin:avoid-reencoding
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_AVOID_REENCODING,
|
|
g_param_spec_boolean ("avoid-reencoding", "Avoid re-encoding",
|
|
"Whether to re-encode portions of compatible video streams that lay on segment boundaries",
|
|
DEFAULT_AVOID_REENCODING,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
|
|
GST_PARAM_MUTABLE_READY));
|
|
|
|
/**
|
|
* GstTranscodeBin:video-filter:
|
|
*
|
|
* Set the video filter element/bin to use.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_VIDEO_FILTER,
|
|
g_param_spec_object ("video-filter", "Video filter",
|
|
"the video filter(s) to apply, if possible",
|
|
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
|
|
GST_PARAM_MUTABLE_READY));
|
|
/**
|
|
* GstTranscodeBin:audio-filter:
|
|
*
|
|
* Set the audio filter element/bin to use.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_AUDIO_FILTER,
|
|
g_param_spec_object ("audio-filter", "Audio filter",
|
|
"the audio filter(s) to apply, if possible",
|
|
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
|
|
GST_PARAM_MUTABLE_READY));
|
|
}
|
|
|
|
static void
|
|
gst_transcode_bin_init (GstTranscodeBin * self)
|
|
{
|
|
GstPadTemplate *pad_tmpl;
|
|
|
|
pad_tmpl = gst_static_pad_template_get (&transcode_bin_sink_template);
|
|
self->sinkpad = gst_ghost_pad_new_no_target_from_template ("sink", pad_tmpl);
|
|
gst_pad_set_active (self->sinkpad, TRUE);
|
|
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
|
|
|
|
gst_object_unref (pad_tmpl);
|
|
|
|
self->transcoding_streams =
|
|
g_ptr_array_new_with_free_func ((GDestroyNotify) transcoding_stream_free);
|
|
|
|
make_decodebin (self);
|
|
}
|