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784 lines
25 KiB
C
784 lines
25 KiB
C
/* MPEG-PS muxer plugin for GStreamer
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* Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* Unless otherwise indicated, Source Code is licensed under MIT license.
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* See further explanation attached in License Statement (distributed in the file
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* LICENSE).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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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 <string.h>
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#include "mpegpsmux.h"
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#include "mpegpsmux_aac.h"
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#include "mpegpsmux_h264.h"
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GST_DEBUG_CATEGORY (mpegpsmux_debug);
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#define GST_CAT_DEFAULT mpegpsmux_debug
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enum
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{
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PROP_AGGREGATE_GOPS = 1
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};
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#define DEFAULT_AGGREGATE_GOPS FALSE
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static GstStaticPadTemplate mpegpsmux_sink_factory =
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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 ("video/mpeg, "
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"mpegversion = (int) { 1, 2, 4 }, "
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"systemstream = (boolean) false; "
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"video/x-dirac;"
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"video/x-h264,stream-format=(string)byte-stream,"
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"alignment=(string){au, nal}; "
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"audio/mpeg, "
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"mpegversion = (int) { 1, 2 };"
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"audio/mpeg, "
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"mpegversion = (int) 4, stream-format = (string) { raw, adts }; "
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"audio/x-lpcm, "
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"width = (int) { 16, 20, 24 }, "
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"rate = (int) { 48000, 96000 }, "
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"channels = (int) [ 1, 8 ], "
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"dynamic_range = (int) [ 0, 255 ], "
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"emphasis = (boolean) { FALSE, TRUE }, "
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"mute = (boolean) { FALSE, TRUE }"));
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static GstStaticPadTemplate mpegpsmux_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/mpeg, "
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"mpegversion = (int) 2, " "systemstream = (boolean) true")
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);
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static void gst_mpegpsmux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_mpegpsmux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void mpegpsmux_finalize (GObject * object);
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static gboolean new_packet_cb (guint8 * data, guint len, void *user_data);
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static gboolean mpegpsdemux_prepare_srcpad (MpegPsMux * mux);
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static GstFlowReturn mpegpsmux_collected (GstCollectPads * pads,
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MpegPsMux * mux);
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static GstPad *mpegpsmux_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
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static void mpegpsmux_release_pad (GstElement * element, GstPad * pad);
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static GstStateChangeReturn mpegpsmux_change_state (GstElement * element,
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GstStateChange transition);
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#define parent_class mpegpsmux_parent_class
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G_DEFINE_TYPE (MpegPsMux, mpegpsmux, GST_TYPE_ELEMENT);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (mpegpsmux, "mpegpsmux", GST_RANK_PRIMARY,
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mpegpsmux_get_type (), GST_DEBUG_CATEGORY_INIT (mpegpsmux_debug,
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"mpegpsmux", 0, "MPEG Program Stream muxer"));
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static void
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mpegpsmux_class_init (MpegPsMuxClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->set_property = gst_mpegpsmux_set_property;
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gobject_class->get_property = gst_mpegpsmux_get_property;
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gobject_class->finalize = mpegpsmux_finalize;
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gstelement_class->request_new_pad = mpegpsmux_request_new_pad;
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gstelement_class->release_pad = mpegpsmux_release_pad;
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gstelement_class->change_state = mpegpsmux_change_state;
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g_object_class_install_property (gobject_class, PROP_AGGREGATE_GOPS,
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g_param_spec_boolean ("aggregate-gops", "Aggregate GOPs",
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"Whether to aggregate GOPs and push them out as buffer lists",
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DEFAULT_AGGREGATE_GOPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_static_pad_template (gstelement_class,
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&mpegpsmux_sink_factory);
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gst_element_class_add_static_pad_template (gstelement_class,
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&mpegpsmux_src_factory);
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gst_element_class_set_static_metadata (gstelement_class,
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"MPEG Program Stream Muxer", "Codec/Muxer",
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"Multiplexes media streams into an MPEG Program Stream",
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"Lin YANG <oxcsnicho@gmail.com>");
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}
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static void
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mpegpsmux_init (MpegPsMux * mux)
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{
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mux->srcpad = gst_pad_new_from_static_template (&mpegpsmux_src_factory,
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"src");
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gst_pad_use_fixed_caps (mux->srcpad);
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gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
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mux->collect = gst_collect_pads_new ();
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gst_collect_pads_set_function (mux->collect,
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(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (mpegpsmux_collected), mux);
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mux->psmux = psmux_new ();
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psmux_set_write_func (mux->psmux, new_packet_cb, mux);
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mux->first = TRUE;
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mux->last_flow_ret = GST_FLOW_OK;
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mux->last_ts = 0; /* XXX: or -1? */
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}
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static void
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mpegpsmux_finalize (GObject * object)
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{
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MpegPsMux *mux = GST_MPEG_PSMUX (object);
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if (mux->collect) {
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gst_object_unref (mux->collect);
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mux->collect = NULL;
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}
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if (mux->psmux) {
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psmux_free (mux->psmux);
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mux->psmux = NULL;
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}
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if (mux->gop_list != NULL) {
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gst_buffer_list_unref (mux->gop_list);
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mux->gop_list = NULL;
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}
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G_OBJECT_CLASS (mpegpsmux_parent_class)->finalize (object);
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}
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static void
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gst_mpegpsmux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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MpegPsMux *mux = GST_MPEG_PSMUX (object);
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switch (prop_id) {
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case PROP_AGGREGATE_GOPS:
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mux->aggregate_gops = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_mpegpsmux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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MpegPsMux *mux = GST_MPEG_PSMUX (object);
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switch (prop_id) {
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case PROP_AGGREGATE_GOPS:
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g_value_set_boolean (value, mux->aggregate_gops);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstFlowReturn
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mpegpsmux_create_stream (MpegPsMux * mux, MpegPsPadData * ps_data, GstPad * pad)
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{
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/* Create a steam. Fill in codec specific information */
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GstFlowReturn ret = GST_FLOW_ERROR;
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GstCaps *caps;
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GstStructure *s;
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gboolean is_video = FALSE;
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caps = gst_pad_get_current_caps (pad);
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if (caps == NULL) {
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GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing");
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return GST_FLOW_NOT_NEGOTIATED;
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}
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s = gst_caps_get_structure (caps, 0);
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if (gst_structure_has_name (s, "video/x-dirac")) {
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GST_DEBUG_OBJECT (pad, "Creating Dirac stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_DIRAC);
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is_video = TRUE;
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} else if (gst_structure_has_name (s, "audio/x-ac3")) {
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GST_DEBUG_OBJECT (pad, "Creating AC3 stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_AC3);
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} else if (gst_structure_has_name (s, "audio/x-dts")) {
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GST_DEBUG_OBJECT (pad, "Creating DTS stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_DTS);
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} else if (gst_structure_has_name (s, "audio/x-lpcm")) {
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GST_DEBUG_OBJECT (pad, "Creating LPCM stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_PS_AUDIO_LPCM);
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} else if (gst_structure_has_name (s, "video/x-h264")) {
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const GValue *value;
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GST_DEBUG_OBJECT (pad, "Creating H264 stream");
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/* Codec data contains SPS/PPS which need to go in stream for valid ES */
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value = gst_structure_get_value (s, "codec_data");
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if (value) {
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ps_data->codec_data = gst_buffer_ref (gst_value_get_buffer (value));
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GST_DEBUG_OBJECT (pad, "%" G_GSIZE_FORMAT " bytes of codec data",
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gst_buffer_get_size (ps_data->codec_data));
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ps_data->prepare_func = mpegpsmux_prepare_h264;
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} else {
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ps_data->codec_data = NULL;
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}
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_H264);
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is_video = TRUE;
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} else if (gst_structure_has_name (s, "audio/mpeg")) {
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gint mpegversion;
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if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
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GST_ELEMENT_ERROR (pad, STREAM, FORMAT,
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("Invalid data format presented"),
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("Caps with type audio/mpeg did not have mpegversion"));
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goto beach;
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}
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switch (mpegversion) {
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case 1:
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GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 1 stream");
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ps_data->stream =
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psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_MPEG1);
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break;
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case 2:
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GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 2 stream");
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ps_data->stream =
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psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_MPEG2);
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break;
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case 4:
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{
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const GValue *value;
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/* Codec data contains SPS/PPS which need to go in stream for valid ES */
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GST_DEBUG_OBJECT (pad, "Creating MPEG Audio, version 4 stream");
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value = gst_structure_get_value (s, "codec_data");
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if (value) {
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ps_data->codec_data = gst_buffer_ref (gst_value_get_buffer (value));
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GST_DEBUG_OBJECT (pad, "%" G_GSIZE_FORMAT " bytes of codec data",
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gst_buffer_get_size (ps_data->codec_data));
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ps_data->prepare_func = mpegpsmux_prepare_aac;
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} else {
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ps_data->codec_data = NULL;
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}
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_AUDIO_AAC);
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break;
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}
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default:
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GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion);
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goto beach;
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}
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} else if (gst_structure_has_name (s, "video/mpeg")) {
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gint mpegversion;
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if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
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GST_ELEMENT_ERROR (mux, STREAM, FORMAT,
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("Invalid data format presented"),
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("Caps with type video/mpeg did not have mpegversion"));
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goto beach;
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}
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if (mpegversion == 1) {
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GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 1 stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG1);
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} else if (mpegversion == 2) {
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GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 2 stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG2);
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} else {
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GST_DEBUG_OBJECT (pad, "Creating MPEG Video, version 4 stream");
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ps_data->stream = psmux_create_stream (mux->psmux, PSMUX_ST_VIDEO_MPEG4);
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}
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is_video = TRUE;
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}
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if (ps_data->stream != NULL) {
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ps_data->stream_id = ps_data->stream->stream_id;
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ps_data->stream_id_ext = ps_data->stream->stream_id_ext;
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GST_DEBUG_OBJECT (pad, "Stream created, stream_id=%04x, stream_id_ext=%04x",
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ps_data->stream_id, ps_data->stream_id_ext);
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gst_structure_get_int (s, "rate", &ps_data->stream->audio_sampling);
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gst_structure_get_int (s, "channels", &ps_data->stream->audio_channels);
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gst_structure_get_int (s, "bitrate", &ps_data->stream->audio_bitrate);
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ret = GST_FLOW_OK;
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if (is_video && mux->video_stream_id == 0) {
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mux->video_stream_id = ps_data->stream_id;
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GST_INFO_OBJECT (mux, "video pad stream_id 0x%02x", mux->video_stream_id);
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}
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}
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beach:
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gst_caps_unref (caps);
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return ret;
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}
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static GstFlowReturn
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mpegpsmux_create_streams (MpegPsMux * mux)
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{
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/* Create stream for each pad */
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GstFlowReturn ret = GST_FLOW_OK;
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GSList *walk = mux->collect->data;
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/* Create the streams */
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while (walk) {
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GstCollectData *c_data = (GstCollectData *) walk->data;
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MpegPsPadData *ps_data = (MpegPsPadData *) walk->data;
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walk = g_slist_next (walk);
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if (ps_data->stream == NULL) {
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ret = mpegpsmux_create_stream (mux, ps_data, c_data->pad);
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if (ret != GST_FLOW_OK)
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goto no_stream;
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}
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}
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return GST_FLOW_OK;
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no_stream:
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GST_ELEMENT_ERROR (mux, STREAM, MUX,
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("Could not create handler for stream"), (NULL));
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return ret;
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}
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static GstBuffer *
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mpegpsmux_queue_buffer_for_stream (MpegPsMux * mux, MpegPsPadData * ps_data)
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{
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GstCollectData *c_data = (GstCollectData *) ps_data;
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GstBuffer *buf;
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g_assert (ps_data->queued.buf == NULL);
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buf = gst_collect_pads_peek (mux->collect, c_data);
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if (buf == NULL)
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return NULL;
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ps_data->queued.buf = buf;
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/* do any raw -> byte-stream format conversions (e.g. for H.264, AAC) */
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if (ps_data->prepare_func) {
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buf = ps_data->prepare_func (buf, ps_data, mux);
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if (buf) { /* Take the prepared buffer instead */
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gst_buffer_unref (ps_data->queued.buf);
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ps_data->queued.buf = buf;
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} else { /* If data preparation returned NULL, use unprepared one */
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buf = ps_data->queued.buf;
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}
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}
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ps_data->queued.pts = GST_BUFFER_PTS (buf);
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if (GST_CLOCK_TIME_IS_VALID (ps_data->queued.pts)) {
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ps_data->queued.pts = gst_segment_to_running_time (&c_data->segment,
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GST_FORMAT_TIME, ps_data->queued.pts);
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}
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ps_data->queued.dts = GST_BUFFER_DTS (buf);
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if (GST_CLOCK_TIME_IS_VALID (ps_data->queued.dts)) {
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ps_data->queued.dts = gst_segment_to_running_time (&c_data->segment,
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GST_FORMAT_TIME, ps_data->queued.dts);
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}
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if (GST_BUFFER_PTS_IS_VALID (buf) && GST_BUFFER_DTS_IS_VALID (buf)) {
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ps_data->queued.ts = MIN (ps_data->queued.dts, ps_data->queued.pts);
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} else if (GST_BUFFER_PTS_IS_VALID (buf) && !GST_BUFFER_DTS_IS_VALID (buf)) {
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ps_data->queued.ts = ps_data->queued.pts;
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} else if (GST_BUFFER_DTS_IS_VALID (buf) && !GST_BUFFER_PTS_IS_VALID (buf)) {
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GST_WARNING_OBJECT (c_data->pad, "got DTS without PTS");
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ps_data->queued.ts = ps_data->queued.dts;
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} else {
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ps_data->queued.ts = GST_CLOCK_TIME_NONE;
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}
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if (ps_data->queued.ts != GST_CLOCK_TIME_NONE)
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ps_data->last_ts = ps_data->queued.ts;
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|
|
GST_DEBUG_OBJECT (mux, "Queued buffer with ts %" GST_TIME_FORMAT ": "
|
|
"uncorrected pts %" GST_TIME_FORMAT " dts %" GST_TIME_FORMAT ", "
|
|
"buffer pts %" GST_TIME_FORMAT " dts %" GST_TIME_FORMAT " for PID 0x%04x",
|
|
GST_TIME_ARGS (ps_data->queued.ts),
|
|
GST_TIME_ARGS (GST_BUFFER_PTS (buf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DTS (buf)),
|
|
GST_TIME_ARGS (ps_data->queued.pts),
|
|
GST_TIME_ARGS (ps_data->queued.dts), ps_data->stream_id);
|
|
|
|
return buf;
|
|
}
|
|
|
|
static MpegPsPadData *
|
|
mpegpsmux_choose_best_stream (MpegPsMux * mux)
|
|
{
|
|
/* Choose from which stream to mux with */
|
|
|
|
MpegPsPadData *best = NULL;
|
|
GstCollectData *c_best = NULL;
|
|
GSList *walk;
|
|
|
|
for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk)) {
|
|
GstCollectData *c_data = (GstCollectData *) walk->data;
|
|
MpegPsPadData *ps_data = (MpegPsPadData *) walk->data;
|
|
|
|
if (ps_data->eos == FALSE) {
|
|
if (ps_data->queued.buf == NULL) {
|
|
GstBuffer *buf;
|
|
|
|
buf = mpegpsmux_queue_buffer_for_stream (mux, ps_data);
|
|
if (buf == NULL) {
|
|
GST_DEBUG_OBJECT (mux, "we have EOS");
|
|
ps_data->eos = TRUE;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* If we don't yet have a best pad, take this one, otherwise take
|
|
* whichever has the oldest timestamp */
|
|
if (best != NULL) {
|
|
if (ps_data->last_ts == GST_CLOCK_TIME_NONE ||
|
|
(best->last_ts != GST_CLOCK_TIME_NONE &&
|
|
ps_data->last_ts < best->last_ts)) {
|
|
best = ps_data;
|
|
c_best = c_data;
|
|
}
|
|
} else {
|
|
best = ps_data;
|
|
c_best = c_data;
|
|
}
|
|
}
|
|
}
|
|
if (c_best) {
|
|
gst_buffer_unref (gst_collect_pads_pop (mux->collect, c_best));
|
|
}
|
|
|
|
return best;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegpsmux_push_gop_list (MpegPsMux * mux)
|
|
{
|
|
GstFlowReturn flow;
|
|
|
|
g_assert (mux->gop_list != NULL);
|
|
|
|
GST_DEBUG_OBJECT (mux, "Sending pending GOP of %u buffers",
|
|
gst_buffer_list_length (mux->gop_list));
|
|
flow = gst_pad_push_list (mux->srcpad, mux->gop_list);
|
|
mux->gop_list = NULL;
|
|
return flow;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegpsmux_collected (GstCollectPads * pads, MpegPsMux * mux)
|
|
{
|
|
/* main muxing function */
|
|
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
MpegPsPadData *best = NULL;
|
|
gboolean keyunit;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pads collected");
|
|
|
|
if (mux->first) { /* process block for the first mux */
|
|
/* iterate through the collect pads and add streams to @mux */
|
|
ret = mpegpsmux_create_streams (mux);
|
|
/* Assumption : all pads are already added at this time */
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
return ret;
|
|
|
|
best = mpegpsmux_choose_best_stream (mux);
|
|
|
|
/* prepare the src pad (output), return if failed */
|
|
if (!mpegpsdemux_prepare_srcpad (mux)) {
|
|
GST_DEBUG_OBJECT (mux, "Failed to send new segment");
|
|
goto new_seg_fail;
|
|
}
|
|
|
|
mux->first = FALSE;
|
|
} else {
|
|
best = mpegpsmux_choose_best_stream (mux);
|
|
}
|
|
|
|
if (best != NULL) {
|
|
GstBuffer *buf = best->queued.buf;
|
|
gint64 pts, dts;
|
|
|
|
g_assert (buf != NULL);
|
|
|
|
GST_LOG_OBJECT (mux,
|
|
"Chose stream from pad %" GST_PTR_FORMAT " for output (PID: 0x%04x): "
|
|
"adjusted pts: %" GST_TIME_FORMAT ", dts: %" GST_TIME_FORMAT,
|
|
best->collect.pad, best->stream_id,
|
|
GST_TIME_ARGS (best->queued.pts), GST_TIME_ARGS (best->queued.dts));
|
|
|
|
/* and convert to mpeg time stamps */
|
|
pts = GSTTIME_TO_MPEGTIME (best->queued.pts);
|
|
dts = GSTTIME_TO_MPEGTIME (best->queued.dts);
|
|
|
|
/* start of new GOP? */
|
|
keyunit = !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
|
|
if (keyunit && best->stream_id == mux->video_stream_id
|
|
&& mux->gop_list != NULL) {
|
|
ret = mpegpsmux_push_gop_list (mux);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
/* give the buffer to libpsmux for processing */
|
|
psmux_stream_add_data (best->stream, buf, pts, dts, keyunit);
|
|
|
|
best->queued.buf = NULL;
|
|
|
|
/* write the data from libpsmux to stream */
|
|
while (psmux_stream_bytes_in_buffer (best->stream) > 0) {
|
|
GST_LOG_OBJECT (mux, "Before @psmux_write_stream_packet");
|
|
if (!psmux_write_stream_packet (mux->psmux, best->stream)) {
|
|
GST_DEBUG_OBJECT (mux, "Failed to write data packet");
|
|
goto write_fail;
|
|
}
|
|
}
|
|
mux->last_ts = best->last_ts;
|
|
} else {
|
|
/* FIXME: Drain all remaining streams */
|
|
/* At EOS */
|
|
if (mux->gop_list != NULL)
|
|
mpegpsmux_push_gop_list (mux);
|
|
|
|
if (!psmux_write_end_code (mux->psmux)) {
|
|
GST_WARNING_OBJECT (mux, "Writing MPEG PS Program end code failed.");
|
|
}
|
|
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
|
|
|
|
ret = GST_FLOW_EOS;
|
|
}
|
|
|
|
done:
|
|
|
|
return ret;
|
|
new_seg_fail:
|
|
return GST_FLOW_ERROR;
|
|
write_fail:
|
|
/* FIXME: Failed writing data for some reason. Should set appropriate error */
|
|
return mux->last_flow_ret;
|
|
}
|
|
|
|
static GstPad *
|
|
mpegpsmux_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
|
|
{
|
|
MpegPsMux *mux = GST_MPEG_PSMUX (element);
|
|
GstPad *pad = NULL;
|
|
MpegPsPadData *pad_data = NULL;
|
|
|
|
pad = gst_pad_new_from_template (templ, name);
|
|
|
|
pad_data = (MpegPsPadData *) gst_collect_pads_add_pad (mux->collect, pad,
|
|
sizeof (MpegPsPadData), NULL, TRUE);
|
|
if (pad_data == NULL)
|
|
goto pad_failure;
|
|
|
|
pad_data->last_ts = GST_CLOCK_TIME_NONE;
|
|
pad_data->codec_data = NULL;
|
|
pad_data->prepare_func = NULL;
|
|
|
|
if (G_UNLIKELY (!gst_element_add_pad (element, pad)))
|
|
goto could_not_add;
|
|
|
|
return pad;
|
|
|
|
could_not_add:
|
|
GST_ELEMENT_ERROR (element, STREAM, FAILED,
|
|
("Internal data stream error."), ("Could not add pad to element"));
|
|
gst_collect_pads_remove_pad (mux->collect, pad);
|
|
gst_object_unref (pad);
|
|
return NULL;
|
|
pad_failure:
|
|
GST_ELEMENT_ERROR (element, STREAM, FAILED,
|
|
("Internal data stream error."), ("Could not add pad to collectpads"));
|
|
gst_object_unref (pad);
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
mpegpsmux_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
/* unref pad data (and codec data) */
|
|
|
|
MpegPsMux *mux = GST_MPEG_PSMUX (element);
|
|
MpegPsPadData *pad_data = NULL;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pad %" GST_PTR_FORMAT " being released", pad);
|
|
|
|
/* Get the MpegPsPadData out of the pad */
|
|
GST_OBJECT_LOCK (pad);
|
|
pad_data = (MpegPsPadData *) gst_pad_get_element_private (pad);
|
|
if (G_LIKELY (pad_data)) {
|
|
/* Free codec data reference if any */
|
|
if (pad_data->codec_data) {
|
|
GST_DEBUG_OBJECT (element, "releasing codec_data reference");
|
|
gst_buffer_unref (pad_data->codec_data);
|
|
pad_data->codec_data = NULL;
|
|
}
|
|
if (pad_data->stream_id == mux->video_stream_id)
|
|
mux->video_stream_id = 0;
|
|
}
|
|
GST_OBJECT_UNLOCK (pad);
|
|
|
|
gst_collect_pads_remove_pad (mux->collect, pad);
|
|
}
|
|
|
|
static gboolean
|
|
new_packet_cb (guint8 * data, guint len, void *user_data)
|
|
{
|
|
/* Called when the PsMux has prepared a packet for output. Return FALSE
|
|
* on error */
|
|
|
|
MpegPsMux *mux = (MpegPsMux *) user_data;
|
|
GstBuffer *buf;
|
|
GstFlowReturn ret;
|
|
|
|
GST_LOG_OBJECT (mux, "Outputting a packet of length %d", len);
|
|
|
|
data = g_memdup2 (data, len);
|
|
buf = gst_buffer_new_wrapped (data, len);
|
|
|
|
GST_BUFFER_TIMESTAMP (buf) = mux->last_ts;
|
|
|
|
if (mux->aggregate_gops) {
|
|
if (mux->gop_list == NULL)
|
|
mux->gop_list = gst_buffer_list_new ();
|
|
|
|
gst_buffer_list_add (mux->gop_list, buf);
|
|
return TRUE;
|
|
}
|
|
|
|
ret = gst_pad_push (mux->srcpad, buf);
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
mux->last_flow_ret = ret;
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* prepare the source pad for output */
|
|
static gboolean
|
|
mpegpsdemux_prepare_srcpad (MpegPsMux * mux)
|
|
{
|
|
GstSegment segment;
|
|
GValue val = { 0, };
|
|
GList *headers, *l;
|
|
GstCaps *caps;
|
|
gchar s_id[32];
|
|
|
|
/* stream-start (FIXME: create id based on input ids) */
|
|
g_snprintf (s_id, sizeof (s_id), "mpegpsmux-%08x", g_random_int ());
|
|
gst_pad_push_event (mux->srcpad, gst_event_new_stream_start (s_id));
|
|
|
|
caps = gst_caps_new_simple ("video/mpeg",
|
|
"mpegversion", G_TYPE_INT, 2, "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
|
|
|
|
headers = psmux_get_stream_headers (mux->psmux);
|
|
g_value_init (&val, GST_TYPE_ARRAY);
|
|
for (l = headers; l != NULL; l = l->next) {
|
|
GValue buf_val = { 0, };
|
|
|
|
g_value_init (&buf_val, GST_TYPE_BUFFER);
|
|
gst_value_take_buffer (&buf_val, GST_BUFFER (l->data));
|
|
l->data = NULL;
|
|
gst_value_array_append_value (&val, &buf_val);
|
|
g_value_unset (&buf_val);
|
|
}
|
|
gst_caps_set_value (caps, "streamheader", &val);
|
|
g_value_unset (&val);
|
|
g_list_free (headers);
|
|
|
|
/* Set caps on src pad and push new segment */
|
|
gst_pad_push_event (mux->srcpad, gst_event_new_caps (caps));
|
|
gst_caps_unref (caps);
|
|
|
|
gst_segment_init (&segment, GST_FORMAT_BYTES);
|
|
gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
mpegpsmux_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
/* control the collect pads */
|
|
|
|
MpegPsMux *mux = GST_MPEG_PSMUX (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_collect_pads_start (mux->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_collect_pads_stop (mux->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
return GST_ELEMENT_REGISTER (mpegpsmux, plugin);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
|
|
mpegpsmux, "MPEG-PS muxer",
|
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
|