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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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703 lines
22 KiB
C
703 lines
22 KiB
C
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/* 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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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ARG_0
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};
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static GstStaticPadTemplate mpegpsmux_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink_%d",
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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;"
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"audio/mpeg, "
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"mpegversion = (int) { 1, 2, 4 };"
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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_dispose (GObject * object);
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static gboolean new_packet_cb (guint8 * data, guint len, void *user_data);
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static void release_buffer_cb (guint8 * data, 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);
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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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GST_BOILERPLATE (MpegPsMux, mpegpsmux, GstElement, GST_TYPE_ELEMENT);
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static void
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mpegpsmux_base_init (gpointer g_class)
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{
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const GstElementDetails mpegpsmux_details = {
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"MPEG Program Stream Muxer",
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"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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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&mpegpsmux_sink_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&mpegpsmux_src_factory));
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gst_element_class_set_details (element_class, &mpegpsmux_details);
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}
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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_DEBUG_FUNCPTR (gst_mpegpsmux_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_mpegpsmux_get_property);
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gobject_class->dispose = mpegpsmux_dispose;
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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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}
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static void
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mpegpsmux_init (MpegPsMux * mux, MpegPsMuxClass * g_class)
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{
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mux->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&mpegpsmux_src_factory), "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_dispose (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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GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (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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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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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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release_buffer_cb (guint8 * data, void *user_data)
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{
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/* release a given buffer. callback func */
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GstBuffer *buf = (GstBuffer *) user_data;
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gst_buffer_unref (buf);
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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 = gst_pad_get_negotiated_caps (pad);
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GstStructure *s;
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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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g_return_val_if_fail (s != NULL, FALSE);
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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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} 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, "we have additional codec data (%d bytes)",
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GST_BUFFER_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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} 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, "we have additional codec data (%d bytes)",
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GST_BUFFER_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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}
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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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psmux_stream_set_buffer_release_func (ps_data->stream, release_buffer_cb);
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ret = GST_FLOW_OK;
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}
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beach:
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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 MpegPsPadData *
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mpegpsmux_choose_best_stream (MpegPsMux * mux)
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{
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/* Choose from which stream to mux with */
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MpegPsPadData *best = NULL;
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GstCollectData *c_best = NULL;
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GSList *walk;
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for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (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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||
|
if (ps_data->eos == FALSE) {
|
||
|
if (ps_data->queued_buf == NULL) {
|
||
|
GstBuffer *buf;
|
||
|
|
||
|
ps_data->queued_buf = buf =
|
||
|
gst_collect_pads_peek (mux->collect, c_data);
|
||
|
|
||
|
if (buf != NULL) {
|
||
|
if (ps_data->prepare_func) {
|
||
|
buf = ps_data->prepare_func (buf, ps_data, mux);
|
||
|
if (buf) { /* Take the prepared buffer instead */
|
||
|
gst_buffer_unref (ps_data->queued_buf);
|
||
|
ps_data->queued_buf = buf;
|
||
|
} else { /* If data preparation returned NULL, use unprepared one */
|
||
|
buf = ps_data->queued_buf;
|
||
|
}
|
||
|
}
|
||
|
if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
|
||
|
/* Ignore timestamps that go backward for now. FIXME: Handle all
|
||
|
* incoming PTS */
|
||
|
if (ps_data->last_ts == GST_CLOCK_TIME_NONE ||
|
||
|
ps_data->last_ts < GST_BUFFER_TIMESTAMP (buf)) {
|
||
|
ps_data->cur_ts = ps_data->last_ts =
|
||
|
gst_segment_to_running_time (&c_data->segment,
|
||
|
GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf));
|
||
|
} else {
|
||
|
GST_DEBUG_OBJECT (mux, "Ignoring PTS that has gone backward");
|
||
|
}
|
||
|
} else
|
||
|
ps_data->cur_ts = GST_CLOCK_TIME_NONE;
|
||
|
|
||
|
GST_DEBUG_OBJECT (mux, "Pulled buffer with ts %" GST_TIME_FORMAT
|
||
|
" (uncorrected ts %" GST_TIME_FORMAT " %" G_GUINT64_FORMAT
|
||
|
") for PID 0x%04x",
|
||
|
GST_TIME_ARGS (ps_data->cur_ts),
|
||
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
|
||
|
GST_BUFFER_TIMESTAMP (buf), ps_data->stream_id);
|
||
|
|
||
|
/* Choose a stream we've never seen a timestamp for to ensure
|
||
|
* we push enough buffers from it to reach a timestamp */
|
||
|
if (ps_data->last_ts == GST_CLOCK_TIME_NONE) {
|
||
|
best = ps_data;
|
||
|
c_best = c_data;
|
||
|
}
|
||
|
} else {
|
||
|
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_collected (GstCollectPads * pads, MpegPsMux * mux)
|
||
|
{
|
||
|
/* main muxing function */
|
||
|
|
||
|
GstFlowReturn ret = GST_FLOW_OK;
|
||
|
MpegPsPadData *best = NULL;
|
||
|
|
||
|
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) {
|
||
|
/* @*buf : the buffer to be processed */
|
||
|
GstBuffer *buf = best->queued_buf;
|
||
|
GstCollectData *c_data = (GstCollectData *) best;
|
||
|
gint64 pts = -1;
|
||
|
|
||
|
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
|
||
|
|
||
|
GST_DEBUG_OBJECT (mux,
|
||
|
"Chose stream from pad %" GST_PTR_FORMAT " for output (PID: 0x%04x)",
|
||
|
c_data->pad, best->stream_id);
|
||
|
|
||
|
/* set timestamp */
|
||
|
if (GST_CLOCK_TIME_IS_VALID (best->cur_ts)) {
|
||
|
pts = GSTTIME_TO_MPEGTIME (best->cur_ts); /* @pts: current timestamp */
|
||
|
GST_DEBUG_OBJECT (mux, "Buffer has TS %" GST_TIME_FORMAT " pts %"
|
||
|
G_GINT64_FORMAT, GST_TIME_ARGS (best->cur_ts), pts);
|
||
|
}
|
||
|
|
||
|
/* give the buffer to libpsmux for processing */
|
||
|
psmux_stream_add_data (best->stream, GST_BUFFER_DATA (buf),
|
||
|
GST_BUFFER_SIZE (buf), buf, pts, -1);
|
||
|
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 (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 ());
|
||
|
}
|
||
|
|
||
|
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)
|
||
|
{
|
||
|
|
||
|
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));
|
||
|
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;
|
||
|
}
|
||
|
}
|
||
|
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);
|
||
|
buf = gst_buffer_new_and_alloc (len);
|
||
|
if (G_UNLIKELY (buf == NULL)) {
|
||
|
mux->last_flow_ret = GST_FLOW_ERROR;
|
||
|
return FALSE;
|
||
|
}
|
||
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
|
||
|
|
||
|
memcpy (GST_BUFFER_DATA (buf), data, len);
|
||
|
GST_BUFFER_TIMESTAMP (buf) = mux->last_ts;
|
||
|
ret = gst_pad_push (mux->srcpad, buf);
|
||
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
||
|
mux->last_flow_ret = ret;
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
mpegpsdemux_prepare_srcpad (MpegPsMux * mux)
|
||
|
{
|
||
|
/* prepare the source pad for output */
|
||
|
|
||
|
GstEvent *new_seg =
|
||
|
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0);
|
||
|
GstCaps *caps = gst_caps_new_simple ("video/mpeg",
|
||
|
"mpegversion", G_TYPE_INT, 2,
|
||
|
"systemstream", G_TYPE_BOOLEAN, TRUE,
|
||
|
NULL);
|
||
|
|
||
|
/* gst_static_pad_template_get_caps (&mpegpsmux_src_factory); */
|
||
|
|
||
|
/* Set caps on src pad from our template and push new segment */
|
||
|
gst_pad_set_caps (mux->srcpad, caps);
|
||
|
|
||
|
if (!gst_pad_push_event (mux->srcpad, new_seg)) {
|
||
|
GST_WARNING_OBJECT (mux, "New segment event was not handled");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
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)
|
||
|
{
|
||
|
if (!gst_element_register (plugin, "mpegpsmux", GST_RANK_PRIMARY,
|
||
|
mpegpsmux_get_type ()))
|
||
|
return FALSE;
|
||
|
|
||
|
GST_DEBUG_CATEGORY_INIT (mpegpsmux_debug, "mpegpsmux", 0,
|
||
|
"MPEG Program Stream muxer");
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
|
||
|
"mpegpsmux", "MPEG-PS muxer",
|
||
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
|