mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1944 lines
56 KiB
C
1944 lines
56 KiB
C
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/*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/.
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Fluendo MPEG Demuxer plugin.
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*
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* The Initial Developer of the Original Code is Fluendo, S.L.
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* Portions created by Fluendo, S.L. are Copyright (C) 2005
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* Fluendo, S.L. All Rights Reserved.
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*
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* Contributor(s): Wim Taymans <wim@fluendo.com>
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* Jan Schmidt <thaytan@noraisin.net>
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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 "gstmpegdefs.h"
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#include "gstmpegdemux.h"
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#define MAX_DVD_AUDIO_STREAMS 8
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#define MAX_DVD_SUBPICTURE_STREAMS 32
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#define SEGMENT_THRESHOLD (GST_SECOND/2)
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/* The SCR_MUNGE value is used to offset the scr_adjust value, to avoid
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* ever generating a negative timestamp */
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#define SCR_MUNGE (2 * GST_SECOND)
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/* We clamp scr delta with 0 so negative bytes won't be possible */
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#define GSTTIME_TO_BYTES(time) \
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((time != -1) ? gst_util_uint64_scale (MAX(0,(gint64) (GSTTIME_TO_MPEGTIME(time) - demux->first_scr)), demux->scr_rate_n, demux->scr_rate_d) : -1)
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#define BYTES_TO_GSTTIME(bytes) ((bytes != -1) ? MPEGTIME_TO_GSTTIME(gst_util_uint64_scale (bytes, demux->scr_rate_d, demux->scr_rate_n)) : -1)
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#define ADAPTER_OFFSET_FLUSH(_bytes_) demux->adapter_offset += (_bytes_)
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GST_DEBUG_CATEGORY_STATIC (gstflupsdemux_debug);
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#define GST_CAT_DEFAULT (gstflupsdemux_debug)
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GST_DEBUG_CATEGORY_EXTERN (gstflupesfilter_debug);
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/* elementfactory information */
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static GstElementDetails flups_demux_details = {
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"MPEG Program Demuxer",
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"Codec/Demuxer",
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"Demultiplexes MPEG Program Streams",
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"Wim Taymans <wim@fluendo.com>"
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};
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/* MPEG2Demux signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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/* FILL ME */
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};
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static GstStaticPadTemplate sink_template = 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 ("application/x-resin-dvd")
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);
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static GstStaticPadTemplate video_template =
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GST_STATIC_PAD_TEMPLATE ("video_%02x",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS ("video/mpeg, "
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"mpegversion = (int) { 1, 2, 4 }, " "systemstream = (boolean) FALSE;"
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"video/x-h264")
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);
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static GstStaticPadTemplate audio_template =
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GST_STATIC_PAD_TEMPLATE ("audio_%02x",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS ("audio/mpeg, "
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"mpegversion = (int) 1;"
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"audio/x-private1-lpcm; "
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"audio/x-private1-ac3;" "audio/x-private1-dts;" "audio/ac3")
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);
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static GstStaticPadTemplate subpicture_template =
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GST_STATIC_PAD_TEMPLATE ("subpicture_%02x",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS ("video/x-dvd-subpicture")
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);
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static GstStaticPadTemplate private_template =
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GST_STATIC_PAD_TEMPLATE ("private_%d",
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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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static void gst_flups_demux_base_init (GstFluPSDemuxClass * klass);
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static void gst_flups_demux_class_init (GstFluPSDemuxClass * klass);
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static void gst_flups_demux_init (GstFluPSDemux * demux);
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static void gst_flups_demux_finalize (GstFluPSDemux * demux);
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static void gst_flups_demux_reset (GstFluPSDemux * demux);
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static gboolean gst_flups_demux_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_flups_demux_src_event (GstPad * pad, GstEvent * event);
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static gboolean gst_flups_demux_src_query (GstPad * pad, GstQuery * query);
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static GstFlowReturn gst_flups_demux_chain (GstPad * pad, GstBuffer * buffer);
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static GstStateChangeReturn gst_flups_demux_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_flups_demux_signals[LAST_SIGNAL] = { 0 };*/
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GType
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gst_flups_demux_get_type (void)
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{
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static GType flups_demux_type = 0;
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if (!flups_demux_type) {
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static const GTypeInfo flups_demux_info = {
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sizeof (GstFluPSDemuxClass),
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(GBaseInitFunc) gst_flups_demux_base_init,
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NULL,
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(GClassInitFunc) gst_flups_demux_class_init,
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NULL,
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NULL,
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sizeof (GstFluPSDemux),
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0,
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(GInstanceInitFunc) gst_flups_demux_init,
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};
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flups_demux_type =
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g_type_register_static (GST_TYPE_ELEMENT, "RsnDVDDemux",
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&flups_demux_info, 0);
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GST_DEBUG_CATEGORY_INIT (gstflupsdemux_debug, "rsndvddemux", 0,
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"MPEG program stream demultiplexer element");
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}
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return flups_demux_type;
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}
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static void
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gst_flups_demux_base_init (GstFluPSDemuxClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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klass->sink_template = gst_static_pad_template_get (&sink_template);
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klass->video_template = gst_static_pad_template_get (&video_template);
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klass->audio_template = gst_static_pad_template_get (&audio_template);
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klass->subpicture_template =
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gst_static_pad_template_get (&subpicture_template);
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klass->private_template = gst_static_pad_template_get (&private_template);
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gst_element_class_add_pad_template (element_class, klass->video_template);
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gst_element_class_add_pad_template (element_class, klass->audio_template);
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gst_element_class_add_pad_template (element_class, klass->private_template);
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gst_element_class_add_pad_template (element_class,
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klass->subpicture_template);
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gst_element_class_add_pad_template (element_class, klass->sink_template);
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gst_element_class_set_details (element_class, &flups_demux_details);
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}
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static void
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gst_flups_demux_class_init (GstFluPSDemuxClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gobject_class->finalize = (GObjectFinalizeFunc) gst_flups_demux_finalize;
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gstelement_class->change_state = gst_flups_demux_change_state;
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}
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static void
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gst_flups_demux_init (GstFluPSDemux * demux)
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{
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GstFluPSDemuxClass *klass = GST_FLUPS_DEMUX_GET_CLASS (demux);
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demux->sinkpad = gst_pad_new_from_template (klass->sink_template, "sink");
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gst_pad_set_event_function (demux->sinkpad, gst_flups_demux_sink_event);
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gst_pad_set_chain_function (demux->sinkpad, gst_flups_demux_chain);
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gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
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demux->streams =
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g_malloc0 (sizeof (GstFluPSStream *) * (GST_FLUPS_DEMUX_MAX_STREAMS));
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demux->scr_adjust = GSTTIME_TO_MPEGTIME (SCR_MUNGE);
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}
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static void
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gst_flups_demux_finalize (GstFluPSDemux * demux)
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{
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gst_flups_demux_reset (demux);
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g_free (demux->streams);
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G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (demux));
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}
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static void
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gst_flups_demux_reset (GstFluPSDemux * demux)
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{
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/* Clean up the streams and pads we allocated */
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gint i;
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GstEvent **p_ev;
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for (i = 0; i < GST_FLUPS_DEMUX_MAX_STREAMS; i++) {
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GstFluPSStream *stream = demux->streams[i];
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if (stream != NULL) {
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if (stream->pad)
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gst_element_remove_pad (GST_ELEMENT_CAST (demux), stream->pad);
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g_free (stream);
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demux->streams[i] = NULL;
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}
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}
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p_ev = &demux->lang_codes;
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gst_event_replace (p_ev, NULL);
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demux->scr_adjust = GSTTIME_TO_MPEGTIME (SCR_MUNGE);
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}
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static GstFluPSStream *
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gst_flups_demux_create_stream (GstFluPSDemux * demux, gint id, gint stream_type)
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{
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GstFluPSStream *stream;
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GstPadTemplate *template;
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gchar *name;
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GstFluPSDemuxClass *klass = GST_FLUPS_DEMUX_GET_CLASS (demux);
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GstCaps *caps;
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name = NULL;
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template = NULL;
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caps = NULL;
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GST_DEBUG_OBJECT (demux, "create stream id 0x%02x, type 0x%02x", id,
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stream_type);
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switch (stream_type) {
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case ST_VIDEO_MPEG1:
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case ST_VIDEO_MPEG2:
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case ST_VIDEO_MPEG4:
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case ST_GST_VIDEO_MPEG1_OR_2:
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{
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gint mpeg_version = 1;
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if (stream_type == ST_VIDEO_MPEG2 ||
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(stream_type == ST_GST_VIDEO_MPEG1_OR_2 && demux->is_mpeg2_pack)) {
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mpeg_version = 2;
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}
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if (stream_type == ST_VIDEO_MPEG4) {
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mpeg_version = 4;
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}
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template = klass->video_template;
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name = g_strdup_printf ("video_%02x", id);
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caps = gst_caps_new_simple ("video/mpeg",
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"mpegversion", G_TYPE_INT, mpeg_version,
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"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
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break;
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}
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case ST_AUDIO_MPEG1:
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case ST_AUDIO_MPEG2:
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template = klass->audio_template;
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name = g_strdup_printf ("audio_%02x", id);
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caps = gst_caps_new_simple ("audio/mpeg",
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"mpegversion", G_TYPE_INT, 1, NULL);
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break;
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case ST_PRIVATE_SECTIONS:
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case ST_PRIVATE_DATA:
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case ST_MHEG:
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case ST_DSMCC:
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case ST_AUDIO_AAC:
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break;
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case ST_VIDEO_H264:
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template = klass->video_template;
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name = g_strdup_printf ("video_%02x", id);
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caps = gst_caps_new_simple ("video/x-h264", NULL);
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break;
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case ST_PS_AUDIO_AC3:
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template = klass->audio_template;
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name = g_strdup_printf ("audio_%02x", id);
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caps = gst_caps_new_simple ("audio/x-private1-ac3", NULL);
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break;
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case ST_PS_AUDIO_DTS:
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template = klass->audio_template;
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name = g_strdup_printf ("audio_%02x", id);
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caps = gst_caps_new_simple ("audio/x-private1-dts", NULL);
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break;
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case ST_PS_AUDIO_LPCM:
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template = klass->audio_template;
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name = g_strdup_printf ("audio_%02x", id);
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caps = gst_caps_new_simple ("audio/x-private1-lpcm", NULL);
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break;
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case ST_PS_DVD_SUBPICTURE:
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template = klass->subpicture_template;
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name = g_strdup_printf ("subpicture_%02x", id);
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caps = gst_caps_new_simple ("video/x-dvd-subpicture", NULL);
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break;
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case ST_GST_AUDIO_RAWA52:
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template = klass->audio_template;
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name = g_strdup_printf ("audio_%02x", id);
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caps = gst_caps_new_simple ("audio/ac3", NULL);
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break;
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default:
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break;
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}
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if (name == NULL || template == NULL || caps == NULL)
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return NULL;
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stream = g_new0 (GstFluPSStream, 1);
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stream->id = id;
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stream->discont = TRUE;
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stream->notlinked = FALSE;
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stream->type = stream_type;
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stream->pad = gst_pad_new_from_template (template, name);
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gst_pad_set_event_function (stream->pad, gst_flups_demux_src_event);
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gst_pad_set_query_function (stream->pad, gst_flups_demux_src_query);
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gst_pad_use_fixed_caps (stream->pad);
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gst_pad_set_caps (stream->pad, caps);
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gst_caps_unref (caps);
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GST_DEBUG_OBJECT (demux, "create pad %s, caps %" GST_PTR_FORMAT, name, caps);
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g_free (name);
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return stream;
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}
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static GstFluPSStream *
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gst_flups_demux_get_stream (GstFluPSDemux * demux, gint id, gint type)
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{
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GstFluPSStream *stream = demux->streams[id];
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if (stream == NULL) {
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if (!(stream = gst_flups_demux_create_stream (demux, id, type)))
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goto unknown_stream;
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GST_DEBUG_OBJECT (demux, "adding pad for stream id 0x%02x type 0x%02x", id,
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type);
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gst_pad_set_active (stream->pad, TRUE);
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gst_element_add_pad (GST_ELEMENT (demux), stream->pad);
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demux->streams[id] = stream;
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}
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return stream;
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/* ERROR */
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unknown_stream:
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{
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GST_DEBUG_OBJECT (demux, "unknown stream id 0x%02x type 0x%02x", id, type);
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return NULL;
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}
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}
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static GstFlowReturn
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gst_flups_demux_send_data (GstFluPSDemux * demux, GstFluPSStream * stream,
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GstBuffer * buf)
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{
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GstFlowReturn result;
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guint64 timestamp;
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guint size;
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if (stream == NULL)
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goto no_stream;
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/* timestamps */
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if (demux->next_pts != G_MAXUINT64)
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||
|
timestamp = MPEGTIME_TO_GSTTIME (demux->next_pts);
|
||
|
else
|
||
|
timestamp = GST_CLOCK_TIME_NONE;
|
||
|
|
||
|
if (demux->current_scr != G_MAXUINT64) {
|
||
|
GstClockTime cur_scr_time = MPEGTIME_TO_GSTTIME (demux->current_scr);
|
||
|
|
||
|
if (stream->last_ts == GST_CLOCK_TIME_NONE ||
|
||
|
stream->last_ts < cur_scr_time) {
|
||
|
#if 0
|
||
|
g_print ("last_ts update on pad %s to time %" GST_TIME_FORMAT "\n",
|
||
|
GST_PAD_NAME (stream->pad), GST_TIME_ARGS (cur_scr_time));
|
||
|
#endif
|
||
|
stream->last_ts = cur_scr_time;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* OK, sent new segment now prepare the buffer for sending */
|
||
|
/* caps */
|
||
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
|
||
|
GST_BUFFER_TIMESTAMP (buf) = timestamp;
|
||
|
|
||
|
/* Set the buffer discont flag, and clear discont state on the stream */
|
||
|
if (stream->discont) {
|
||
|
GST_DEBUG_OBJECT (demux, "discont buffer to pad %" GST_PTR_FORMAT
|
||
|
" with TS %" GST_TIME_FORMAT "\n", stream->pad,
|
||
|
GST_TIME_ARGS (timestamp));
|
||
|
|
||
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
||
|
stream->discont = FALSE;
|
||
|
}
|
||
|
size = GST_BUFFER_SIZE (buf);
|
||
|
|
||
|
demux->next_pts = G_MAXUINT64;
|
||
|
demux->next_dts = G_MAXUINT64;
|
||
|
|
||
|
result = gst_pad_push (stream->pad, buf);
|
||
|
GST_DEBUG_OBJECT (demux, "pushed stream id 0x%02x type 0x%02x, time: %"
|
||
|
GST_TIME_FORMAT ", size %d. result: %s",
|
||
|
stream->id, stream->type, GST_TIME_ARGS (timestamp),
|
||
|
size, gst_flow_get_name (result));
|
||
|
|
||
|
return result;
|
||
|
|
||
|
/* ERROR */
|
||
|
no_stream:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "no stream given");
|
||
|
gst_buffer_unref (buf);
|
||
|
return GST_FLOW_OK;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
gst_flups_demux_mark_discont (GstFluPSDemux * demux)
|
||
|
{
|
||
|
gint id;
|
||
|
|
||
|
/* mark discont on all streams */
|
||
|
for (id = 0; id < GST_FLUPS_DEMUX_MAX_STREAMS; id++) {
|
||
|
GstFluPSStream *stream = demux->streams[id];
|
||
|
|
||
|
if (stream) {
|
||
|
stream->discont = TRUE;
|
||
|
GST_DEBUG_OBJECT (demux, "marked stream as discont %d", stream->discont);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
gst_flups_demux_clear_times (GstFluPSDemux * demux)
|
||
|
{
|
||
|
gint id;
|
||
|
|
||
|
/* Clear the last ts for all streams */
|
||
|
for (id = 0; id < GST_FLUPS_DEMUX_MAX_STREAMS; id++) {
|
||
|
GstFluPSStream *stream = demux->streams[id];
|
||
|
|
||
|
if (stream) {
|
||
|
stream->last_ts = GST_CLOCK_TIME_NONE;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
gst_flups_demux_send_segment_updates (GstFluPSDemux * demux,
|
||
|
GstClockTime new_time)
|
||
|
{
|
||
|
/* Advance all lagging streams by sending a segment update */
|
||
|
gint id;
|
||
|
GstEvent *event = NULL;
|
||
|
|
||
|
if (new_time > demux->src_segment.stop)
|
||
|
return;
|
||
|
|
||
|
for (id = 0; id < GST_FLUPS_DEMUX_MAX_STREAMS; id++) {
|
||
|
GstFluPSStream *stream = demux->streams[id];
|
||
|
|
||
|
if (stream) {
|
||
|
if (stream->last_ts == GST_CLOCK_TIME_NONE ||
|
||
|
stream->last_ts < demux->src_segment.start)
|
||
|
stream->last_ts = demux->src_segment.start;
|
||
|
if (stream->last_ts + SEGMENT_THRESHOLD < new_time) {
|
||
|
#if 0
|
||
|
g_print ("Segment update to pad %s time %" GST_TIME_FORMAT "\n",
|
||
|
GST_PAD_NAME (stream->pad), GST_TIME_ARGS (new_time));
|
||
|
#endif
|
||
|
if (event == NULL) {
|
||
|
event = gst_event_new_new_segment_full (TRUE,
|
||
|
demux->src_segment.rate, demux->src_segment.applied_rate,
|
||
|
GST_FORMAT_TIME, new_time,
|
||
|
demux->src_segment.stop,
|
||
|
demux->src_segment.time + (new_time - demux->src_segment.start));
|
||
|
}
|
||
|
gst_event_ref (event);
|
||
|
gst_pad_push_event (stream->pad, event);
|
||
|
stream->last_ts = new_time;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (event)
|
||
|
gst_event_unref (event);
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
gst_flups_demux_send_segment_close (GstFluPSDemux * demux)
|
||
|
{
|
||
|
gint id;
|
||
|
GstEvent *event = NULL;
|
||
|
|
||
|
for (id = 0; id < GST_FLUPS_DEMUX_MAX_STREAMS; id++) {
|
||
|
GstFluPSStream *stream = demux->streams[id];
|
||
|
|
||
|
if (stream) {
|
||
|
if (stream->last_ts == GST_CLOCK_TIME_NONE ||
|
||
|
stream->last_ts < demux->src_segment.start)
|
||
|
stream->last_ts = demux->src_segment.start;
|
||
|
|
||
|
#if 0
|
||
|
g_print ("Segment update to pad %s start %" GST_TIME_FORMAT
|
||
|
" stop %" GST_TIME_FORMAT "\n",
|
||
|
GST_PAD_NAME (stream->pad), GST_TIME_ARGS (stream->last_ts),
|
||
|
GST_TIME_ARGS (demux->src_segment.stop));
|
||
|
#endif
|
||
|
event = gst_event_new_new_segment_full (TRUE,
|
||
|
demux->src_segment.rate, demux->src_segment.applied_rate,
|
||
|
GST_FORMAT_TIME, stream->last_ts,
|
||
|
demux->src_segment.stop,
|
||
|
demux->src_segment.time +
|
||
|
(stream->last_ts - demux->src_segment.start));
|
||
|
gst_pad_push_event (stream->pad, event);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_send_event (GstFluPSDemux * demux, GstEvent * event)
|
||
|
{
|
||
|
gint id;
|
||
|
gboolean ret = FALSE;
|
||
|
|
||
|
for (id = 0; id < GST_FLUPS_DEMUX_MAX_STREAMS; id++) {
|
||
|
GstFluPSStream *stream = demux->streams[id];
|
||
|
|
||
|
if (stream && !stream->notlinked) {
|
||
|
(void) gst_event_ref (event);
|
||
|
|
||
|
if (!gst_pad_push_event (stream->pad, event)) {
|
||
|
GST_DEBUG_OBJECT (stream, "event %s was not handled correctly by pad %"
|
||
|
GST_PTR_FORMAT, GST_EVENT_TYPE_NAME (event), stream->pad);
|
||
|
} else {
|
||
|
/* If at least one push returns TRUE, then we return TRUE. */
|
||
|
GST_DEBUG_OBJECT (stream, "event %s was handled correctly by pad %"
|
||
|
GST_PTR_FORMAT, GST_EVENT_TYPE_NAME (event), stream->pad);
|
||
|
ret = TRUE;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
gst_event_unref (event);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_handle_dvd_event (GstFluPSDemux * demux, GstEvent * event)
|
||
|
{
|
||
|
const GstStructure *structure = gst_event_get_structure (event);
|
||
|
const char *type = gst_structure_get_string (structure, "event");
|
||
|
gint i;
|
||
|
gchar cur_stream_name[32];
|
||
|
GstFluPSStream *temp;
|
||
|
|
||
|
if (strcmp (type, "dvd-lang-codes") == 0) {
|
||
|
GstEvent **p_ev;
|
||
|
/* Store the language codes event on the element, then iterate over the
|
||
|
* streams it specifies and retrieve them. The stream creation code then
|
||
|
* creates the pad appropriately and sends tag events as needed */
|
||
|
p_ev = &demux->lang_codes;
|
||
|
gst_event_replace (p_ev, event);
|
||
|
|
||
|
GST_ERROR_OBJECT (demux, "*********************\nLang codes event %s",
|
||
|
gst_structure_to_string (structure));
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "Handling language codes event");
|
||
|
|
||
|
/* Create a video pad to ensure have it before emit no more pads */
|
||
|
temp = gst_flups_demux_get_stream (demux, 0xe0, ST_VIDEO_MPEG2);
|
||
|
|
||
|
/* Read out the languages for audio streams and request each one that
|
||
|
* is present */
|
||
|
for (i = 0; i < MAX_DVD_AUDIO_STREAMS; i++) {
|
||
|
gint stream_format;
|
||
|
gint stream_id;
|
||
|
|
||
|
g_snprintf (cur_stream_name, 32, "audio-%d-format", i);
|
||
|
if (!gst_structure_get_int (structure, cur_stream_name, &stream_format))
|
||
|
continue;
|
||
|
|
||
|
switch (stream_format) {
|
||
|
case 0x0:
|
||
|
/* AC3 */
|
||
|
stream_id = 0x80 + i;
|
||
|
temp = gst_flups_demux_get_stream (demux, stream_id, ST_PS_AUDIO_AC3);
|
||
|
break;
|
||
|
case 0x2:
|
||
|
case 0x3:
|
||
|
/* MPEG audio without and with extension stream are
|
||
|
* treated the same */
|
||
|
stream_id = 0xC0 + i;
|
||
|
temp = gst_flups_demux_get_stream (demux, stream_id, ST_AUDIO_MPEG1);
|
||
|
break;
|
||
|
case 0x4:
|
||
|
/* LPCM */
|
||
|
stream_id = 0xA0 + i;
|
||
|
temp =
|
||
|
gst_flups_demux_get_stream (demux, stream_id, ST_PS_AUDIO_LPCM);
|
||
|
break;
|
||
|
case 0x6:
|
||
|
/* DTS */
|
||
|
stream_id = 0x88 + i;
|
||
|
temp = gst_flups_demux_get_stream (demux, stream_id, ST_PS_AUDIO_DTS);
|
||
|
break;
|
||
|
case 0x7:
|
||
|
/* FIXME: What range is SDDS? */
|
||
|
break;
|
||
|
default:
|
||
|
GST_WARNING_OBJECT (demux,
|
||
|
"Unknown audio stream format in language code event: %d",
|
||
|
stream_format);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* And subtitle streams */
|
||
|
for (i = 0; i < MAX_DVD_SUBPICTURE_STREAMS; i++) {
|
||
|
gint stream_format;
|
||
|
g_snprintf (cur_stream_name, 32, "subpicture-%d-format", i);
|
||
|
|
||
|
if (!gst_structure_get_int (structure, cur_stream_name, &stream_format))
|
||
|
continue;
|
||
|
|
||
|
/* Retrieve the subpicture stream to force pad creation */
|
||
|
temp = gst_flups_demux_get_stream (demux, 0x20 + i, ST_PS_DVD_SUBPICTURE);
|
||
|
}
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "Created all pads from Language Codes event, "
|
||
|
"signalling no-more-pads");
|
||
|
|
||
|
gst_element_no_more_pads (GST_ELEMENT (demux));
|
||
|
demux->need_no_more_pads = FALSE;
|
||
|
gst_event_unref (event);
|
||
|
} else {
|
||
|
gst_flups_demux_send_event (demux, event);
|
||
|
}
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_sink_event (GstPad * pad, GstEvent * event)
|
||
|
{
|
||
|
gboolean res = TRUE;
|
||
|
GstFluPSDemux *demux;
|
||
|
|
||
|
demux = GST_FLUPS_DEMUX (gst_pad_get_parent (pad));
|
||
|
|
||
|
switch (GST_EVENT_TYPE (event)) {
|
||
|
case GST_EVENT_FLUSH_START:
|
||
|
gst_flups_demux_send_event (demux, event);
|
||
|
break;
|
||
|
case GST_EVENT_FLUSH_STOP:
|
||
|
gst_flups_demux_send_event (demux, event);
|
||
|
|
||
|
gst_segment_init (&demux->sink_segment, GST_FORMAT_UNDEFINED);
|
||
|
gst_segment_init (&demux->src_segment, GST_FORMAT_TIME);
|
||
|
gst_adapter_clear (demux->adapter);
|
||
|
gst_adapter_clear (demux->rev_adapter);
|
||
|
demux->adapter_offset = G_MAXUINT64;
|
||
|
gst_pes_filter_drain (&demux->filter);
|
||
|
demux->current_scr = G_MAXUINT64;
|
||
|
demux->bytes_since_scr = 0;
|
||
|
demux->scr_adjust = GSTTIME_TO_MPEGTIME (SCR_MUNGE);
|
||
|
gst_flups_demux_clear_times (demux);
|
||
|
break;
|
||
|
case GST_EVENT_NEWSEGMENT:
|
||
|
{
|
||
|
gboolean update;
|
||
|
gdouble rate;
|
||
|
GstFormat format;
|
||
|
gint64 start, stop, time;
|
||
|
gint64 accum, dur;
|
||
|
gdouble arate;
|
||
|
GstClockTimeDiff adjust;
|
||
|
|
||
|
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
|
||
|
&start, &stop, &time);
|
||
|
|
||
|
if (format != GST_FORMAT_TIME)
|
||
|
return FALSE;
|
||
|
|
||
|
dur = stop - start;
|
||
|
|
||
|
demux->first_scr = GSTTIME_TO_MPEGTIME (start);
|
||
|
demux->current_scr = demux->first_scr + demux->scr_adjust;
|
||
|
demux->base_time = time;
|
||
|
demux->bytes_since_scr = 0;
|
||
|
|
||
|
gst_segment_set_newsegment_full (&demux->sink_segment, update, rate,
|
||
|
arate, format, start, stop, time);
|
||
|
|
||
|
g_print ("demux: got segment update %d start %" G_GINT64_FORMAT
|
||
|
" stop %" G_GINT64_FORMAT " time %" G_GINT64_FORMAT "\n",
|
||
|
update, start, stop, time);
|
||
|
|
||
|
accum = demux->sink_segment.accum;
|
||
|
start = demux->sink_segment.start;
|
||
|
stop = demux->sink_segment.stop;
|
||
|
|
||
|
adjust = accum - start + SCR_MUNGE;
|
||
|
start = accum + SCR_MUNGE;
|
||
|
|
||
|
if (adjust >= 0)
|
||
|
demux->scr_adjust = GSTTIME_TO_MPEGTIME (adjust);
|
||
|
else
|
||
|
demux->scr_adjust = -GSTTIME_TO_MPEGTIME (-adjust);
|
||
|
|
||
|
if (stop != -1)
|
||
|
stop = start + dur;
|
||
|
|
||
|
GST_INFO_OBJECT (demux, "sending new segment: rate %g "
|
||
|
"format %d, start: %" G_GINT64_FORMAT ", stop: %" G_GINT64_FORMAT
|
||
|
", time: %" G_GINT64_FORMAT, rate, format, start, stop, time);
|
||
|
|
||
|
g_print ("sending new segment: update %d rate %g format %d, start: %"
|
||
|
G_GINT64_FORMAT ", stop: %" G_GINT64_FORMAT ", time: %"
|
||
|
G_GINT64_FORMAT " scr_adjust: %" G_GINT64_FORMAT
|
||
|
"(%" GST_TIME_FORMAT ")\n",
|
||
|
update, rate, format, start, stop, time, demux->scr_adjust,
|
||
|
GST_TIME_ARGS (MPEGTIME_TO_GSTTIME (demux->scr_adjust)));
|
||
|
|
||
|
gst_segment_set_newsegment_full (&demux->src_segment, update,
|
||
|
rate, arate, format, start, stop, time);
|
||
|
|
||
|
gst_event_unref (event);
|
||
|
if (update) {
|
||
|
/* Segment closing, send it as per-pad updates to manage the accum
|
||
|
* properly */
|
||
|
gst_flups_demux_send_segment_close (demux);
|
||
|
} else {
|
||
|
event = gst_event_new_new_segment_full (update,
|
||
|
rate, arate, GST_FORMAT_TIME, start, stop, time);
|
||
|
gst_flups_demux_send_event (demux, event);
|
||
|
}
|
||
|
|
||
|
break;
|
||
|
}
|
||
|
case GST_EVENT_EOS:
|
||
|
GST_INFO_OBJECT (demux, "Received EOS");
|
||
|
if (!gst_flups_demux_send_event (demux, event)) {
|
||
|
GST_WARNING_OBJECT (demux, "failed pushing EOS on streams");
|
||
|
GST_ELEMENT_ERROR (demux, STREAM, FAILED,
|
||
|
("Internal data stream error."), ("Can't push EOS downstream"));
|
||
|
}
|
||
|
break;
|
||
|
case GST_EVENT_CUSTOM_DOWNSTREAM:
|
||
|
case GST_EVENT_CUSTOM_DOWNSTREAM_OOB:
|
||
|
{
|
||
|
const GstStructure *structure = gst_event_get_structure (event);
|
||
|
|
||
|
if (structure != NULL
|
||
|
&& gst_structure_has_name (structure, "application/x-gst-dvd")) {
|
||
|
res = gst_flups_demux_handle_dvd_event (demux, event);
|
||
|
} else {
|
||
|
gst_flups_demux_send_event (demux, event);
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
default:
|
||
|
gst_flups_demux_send_event (demux, event);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
gst_object_unref (demux);
|
||
|
|
||
|
return res;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_src_event (GstPad * pad, GstEvent * event)
|
||
|
{
|
||
|
gboolean res = FALSE;
|
||
|
GstFluPSDemux *demux;
|
||
|
|
||
|
demux = GST_FLUPS_DEMUX (gst_pad_get_parent (pad));
|
||
|
|
||
|
switch (GST_EVENT_TYPE (event)) {
|
||
|
case GST_EVENT_SEEK:
|
||
|
{
|
||
|
gdouble rate;
|
||
|
GstFormat format;
|
||
|
GstSeekFlags flags;
|
||
|
GstSeekType start_type, stop_type;
|
||
|
gint64 start, stop;
|
||
|
gint64 bstart, bstop;
|
||
|
GstEvent *bevent;
|
||
|
|
||
|
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
|
||
|
&stop_type, &stop);
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "seek event, rate: %f start: %" GST_TIME_FORMAT
|
||
|
" stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
|
||
|
GST_TIME_ARGS (stop));
|
||
|
|
||
|
if (format == GST_FORMAT_BYTES) {
|
||
|
GST_DEBUG_OBJECT (demux, "seek not supported on format %d", format);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "seek - trying directly upstream first");
|
||
|
|
||
|
/* first try original format seek */
|
||
|
(void) gst_event_ref (event);
|
||
|
if ((res = gst_pad_push_event (demux->sinkpad, event)))
|
||
|
goto done;
|
||
|
|
||
|
if (format != GST_FORMAT_TIME) {
|
||
|
/* From here down, we only support time based seeks */
|
||
|
GST_DEBUG_OBJECT (demux, "seek not supported on format %d", format);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
/* We need to convert to byte based seek and we need a scr_rate for that. */
|
||
|
if (demux->scr_rate_n == G_MAXUINT64 || demux->scr_rate_d == G_MAXUINT64) {
|
||
|
GST_DEBUG_OBJECT (demux, "seek not possible, no scr_rate");
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "try with scr_rate interpolation");
|
||
|
|
||
|
bstart = GSTTIME_TO_BYTES (start);
|
||
|
bstop = GSTTIME_TO_BYTES (stop);
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "in bytes bstart %" G_GINT64_FORMAT " bstop %"
|
||
|
G_GINT64_FORMAT, bstart, bstop);
|
||
|
bevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, start_type,
|
||
|
bstart, stop_type, bstop);
|
||
|
|
||
|
res = gst_pad_push_event (demux->sinkpad, bevent);
|
||
|
|
||
|
done:
|
||
|
gst_event_unref (event);
|
||
|
break;
|
||
|
}
|
||
|
default:
|
||
|
res = gst_pad_push_event (demux->sinkpad, event);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
gst_object_unref (demux);
|
||
|
|
||
|
return res;
|
||
|
|
||
|
not_supported:
|
||
|
{
|
||
|
gst_object_unref (demux);
|
||
|
gst_event_unref (event);
|
||
|
|
||
|
return FALSE;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_src_query (GstPad * pad, GstQuery * query)
|
||
|
{
|
||
|
gboolean res = FALSE;
|
||
|
GstFluPSDemux *demux;
|
||
|
|
||
|
demux = GST_FLUPS_DEMUX (gst_pad_get_parent (pad));
|
||
|
|
||
|
GST_LOG_OBJECT (demux, "Have query of type %d on pad %" GST_PTR_FORMAT,
|
||
|
GST_QUERY_TYPE (query), pad);
|
||
|
|
||
|
switch (GST_QUERY_TYPE (query)) {
|
||
|
case GST_QUERY_POSITION:
|
||
|
{
|
||
|
GstPad *peer;
|
||
|
GstFormat format;
|
||
|
gint64 position;
|
||
|
|
||
|
gst_query_parse_position (query, &format, NULL);
|
||
|
|
||
|
if ((peer = gst_pad_get_peer (demux->sinkpad)) != NULL) {
|
||
|
res = gst_pad_query (peer, query);
|
||
|
gst_object_unref (peer);
|
||
|
if (res)
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (format != GST_FORMAT_TIME) {
|
||
|
GST_DEBUG_OBJECT (demux, "position not supported for format %d",
|
||
|
format);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
position = demux->base_time;
|
||
|
if (demux->current_scr != G_MAXUINT64 && demux->first_scr != G_MAXUINT64) {
|
||
|
position +=
|
||
|
MPEGTIME_TO_GSTTIME (demux->current_scr - demux->scr_adjust -
|
||
|
demux->first_scr);
|
||
|
}
|
||
|
|
||
|
GST_LOG_OBJECT (demux, "Position at GStreamer Time:%" GST_TIME_FORMAT,
|
||
|
GST_TIME_ARGS (position));
|
||
|
|
||
|
gst_query_set_position (query, format, position);
|
||
|
res = TRUE;
|
||
|
break;
|
||
|
}
|
||
|
case GST_QUERY_DURATION:
|
||
|
{
|
||
|
GstFormat format;
|
||
|
gint64 duration;
|
||
|
GstPad *peer;
|
||
|
|
||
|
gst_query_parse_duration (query, &format, NULL);
|
||
|
|
||
|
if ((peer = gst_pad_get_peer (demux->sinkpad)) == NULL) {
|
||
|
GST_DEBUG_OBJECT (demux, "duration not possible, no peer");
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
/* For any format other than bytes, see if upstream knows first */
|
||
|
if (format == GST_FORMAT_BYTES) {
|
||
|
GST_DEBUG_OBJECT (demux, "duration not supported for format %d",
|
||
|
format);
|
||
|
gst_object_unref (peer);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
if (gst_pad_query (peer, query)) {
|
||
|
gst_object_unref (peer);
|
||
|
res = TRUE;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Upstream didn't know, so we can only answer TIME queries from
|
||
|
* here on */
|
||
|
if (format != GST_FORMAT_TIME) {
|
||
|
GST_DEBUG_OBJECT (demux, "duration not supported for format %d",
|
||
|
format);
|
||
|
gst_object_unref (peer);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
if (demux->mux_rate == -1) {
|
||
|
GST_DEBUG_OBJECT (demux, "duration not possible, no mux_rate");
|
||
|
gst_object_unref (peer);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
|
||
|
gst_query_set_duration (query, GST_FORMAT_BYTES, -1);
|
||
|
|
||
|
if (!gst_pad_query (peer, query)) {
|
||
|
GST_LOG_OBJECT (demux, "query on peer pad failed");
|
||
|
gst_object_unref (peer);
|
||
|
goto not_supported;
|
||
|
}
|
||
|
gst_object_unref (peer);
|
||
|
|
||
|
gst_query_parse_duration (query, &format, &duration);
|
||
|
|
||
|
duration = BYTES_TO_GSTTIME (duration);
|
||
|
|
||
|
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
|
||
|
res = TRUE;
|
||
|
break;
|
||
|
}
|
||
|
default:
|
||
|
res = gst_pad_query_default (pad, query);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
gst_object_unref (demux);
|
||
|
|
||
|
return res;
|
||
|
|
||
|
not_supported:
|
||
|
{
|
||
|
gst_object_unref (demux);
|
||
|
|
||
|
return FALSE;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
gst_flups_demux_reset_psm (GstFluPSDemux * demux)
|
||
|
{
|
||
|
gint i;
|
||
|
|
||
|
#define FILL_TYPE(start, stop, type) \
|
||
|
for (i=start; i <= stop; i++) \
|
||
|
demux->psm[i] = type;
|
||
|
|
||
|
FILL_TYPE (0x00, 0x1f, -1);
|
||
|
FILL_TYPE (0x20, 0x3f, ST_PS_DVD_SUBPICTURE);
|
||
|
FILL_TYPE (0x40, 0x7f, -1);
|
||
|
FILL_TYPE (0x80, 0x87, ST_PS_AUDIO_AC3);
|
||
|
FILL_TYPE (0x88, 0x9f, ST_PS_AUDIO_DTS);
|
||
|
FILL_TYPE (0xa0, 0xbf, ST_PS_AUDIO_LPCM);
|
||
|
FILL_TYPE (0xbd, 0xbd, -1);
|
||
|
FILL_TYPE (0xc0, 0xdf, ST_AUDIO_MPEG1);
|
||
|
FILL_TYPE (0xe0, 0xef, ST_GST_VIDEO_MPEG1_OR_2);
|
||
|
FILL_TYPE (0xf0, 0xff, -1);
|
||
|
|
||
|
#undef FILL_TYPE
|
||
|
}
|
||
|
|
||
|
static GstFlowReturn
|
||
|
gst_flups_demux_parse_pack_start (GstFluPSDemux * demux)
|
||
|
{
|
||
|
const guint8 *data;
|
||
|
guint length;
|
||
|
guint32 scr1, scr2;
|
||
|
guint64 scr, scr_adjusted, new_rate;
|
||
|
GstClockTime new_time;
|
||
|
|
||
|
GST_DEBUG ("parsing pack start");
|
||
|
|
||
|
/* fixed length to begin with, start code and two scr values */
|
||
|
length = 8 + 4;
|
||
|
|
||
|
if (!(data = gst_adapter_peek (demux->adapter, length)))
|
||
|
goto need_more_data;
|
||
|
|
||
|
/* skip start code */
|
||
|
data += 4;
|
||
|
|
||
|
scr1 = GUINT32_FROM_BE (*(guint32 *) data);
|
||
|
scr2 = GUINT32_FROM_BE (*(guint32 *) (data + 4));
|
||
|
|
||
|
/* start parsing the stream */
|
||
|
if ((*data & 0xc0) == 0x40) {
|
||
|
guint32 scr_ext;
|
||
|
guint32 next32;
|
||
|
guint8 stuffing_bytes;
|
||
|
|
||
|
GST_DEBUG ("Found MPEG2 stream");
|
||
|
demux->is_mpeg2_pack = TRUE;
|
||
|
|
||
|
/* mpeg2 has more data */
|
||
|
length += 2;
|
||
|
if (gst_adapter_available (demux->adapter) < length)
|
||
|
goto need_more_data;
|
||
|
|
||
|
/* :2=01 ! scr:3 ! marker:1==1 ! scr:15 ! marker:1==1 ! scr:15 */
|
||
|
|
||
|
/* check markers */
|
||
|
if ((scr1 & 0xc4000400) != 0x44000400)
|
||
|
goto lost_sync;
|
||
|
|
||
|
scr = ((guint64) scr1 & 0x38000000) << 3;
|
||
|
scr |= ((guint64) scr1 & 0x03fff800) << 4;
|
||
|
scr |= ((guint64) scr1 & 0x000003ff) << 5;
|
||
|
scr |= ((guint64) scr2 & 0xf8000000) >> 27;
|
||
|
|
||
|
/* marker:1==1 ! scr_ext:9 ! marker:1==1 */
|
||
|
if ((scr2 & 0x04010000) != 0x04010000)
|
||
|
goto lost_sync;
|
||
|
|
||
|
scr_ext = (scr2 & 0x03fe0000) >> 17;
|
||
|
/* We keep the offset of this scr */
|
||
|
demux->last_scr_offset = demux->adapter_offset + 12;
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "SCR: 0x%08x SCRE: 0x%08x", scr, scr_ext);
|
||
|
|
||
|
if (scr_ext) {
|
||
|
scr = (scr * 300 + scr_ext % 300) / 300;
|
||
|
}
|
||
|
/* SCR has been converted into units of 90Khz ticks to make it comparable
|
||
|
to DTS/PTS, that also implies 1 tick rounding error */
|
||
|
data += 6;
|
||
|
/* PMR:22 ! :2==11 ! reserved:5 ! stuffing_len:3 */
|
||
|
next32 = (GUINT32_FROM_BE ((*(guint32 *) data)));
|
||
|
if ((next32 & 0x00000300) != 0x00000300)
|
||
|
goto lost_sync;
|
||
|
|
||
|
new_rate = (next32 & 0xfffffc00) >> 10;
|
||
|
|
||
|
stuffing_bytes = (next32 & 0x07);
|
||
|
GST_DEBUG_OBJECT (demux, "stuffing bytes: %d", stuffing_bytes);
|
||
|
|
||
|
data += 4;
|
||
|
while (stuffing_bytes--) {
|
||
|
if (*data++ != 0xff)
|
||
|
goto lost_sync;
|
||
|
}
|
||
|
} else {
|
||
|
GST_DEBUG ("Found MPEG1 stream");
|
||
|
demux->is_mpeg2_pack = FALSE;
|
||
|
|
||
|
/* check markers */
|
||
|
if ((scr1 & 0xf1000100) != 0x21000100)
|
||
|
goto lost_sync;
|
||
|
|
||
|
if ((scr2 & 0x01800001) != 0x01800001)
|
||
|
goto lost_sync;
|
||
|
|
||
|
/* :4=0010 ! scr:3 ! marker:1==1 ! scr:15 ! marker:1==1 ! scr:15 ! marker:1==1 */
|
||
|
scr = ((guint64) scr1 & 0x0e000000) << 5;
|
||
|
scr |= ((guint64) scr1 & 0x00fffe00) << 6;
|
||
|
scr |= ((guint64) scr1 & 0x000000ff) << 7;
|
||
|
scr |= ((guint64) scr2 & 0xfe000000) >> 25;
|
||
|
|
||
|
/* We keep the offset of this scr */
|
||
|
demux->last_scr_offset = demux->adapter_offset + 8;
|
||
|
|
||
|
/* marker:1==1 ! mux_rate:22 ! marker:1==1 */
|
||
|
new_rate = (scr2 & 0x007ffffe) >> 1;
|
||
|
|
||
|
data += 8;
|
||
|
}
|
||
|
new_rate *= MPEG_MUX_RATE_MULT;
|
||
|
|
||
|
/* scr adjusted is the new scr found + the colected adjustment */
|
||
|
scr_adjusted = scr + demux->scr_adjust;
|
||
|
|
||
|
/* keep the first src in order to calculate delta time */
|
||
|
if (demux->first_scr == G_MAXUINT64) {
|
||
|
demux->first_scr = scr;
|
||
|
demux->first_scr_offset = demux->last_scr_offset;
|
||
|
|
||
|
if (demux->sink_segment.format == GST_FORMAT_TIME) {
|
||
|
demux->base_time = demux->sink_segment.time;
|
||
|
} else {
|
||
|
demux->base_time = MPEGTIME_TO_GSTTIME (demux->first_scr);
|
||
|
}
|
||
|
/* at begin consider the new_rate as the scr rate, bytes/clock ticks */
|
||
|
demux->scr_rate_n = new_rate;
|
||
|
demux->scr_rate_d = CLOCK_FREQ;
|
||
|
} else if (demux->first_scr_offset != demux->last_scr_offset) {
|
||
|
/* estimate byte rate related to the SCR */
|
||
|
demux->scr_rate_n = demux->last_scr_offset - demux->first_scr_offset;
|
||
|
demux->scr_rate_d = scr - demux->first_scr;
|
||
|
}
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux,
|
||
|
"SCR: %" G_GINT64_FORMAT " (%" G_GINT64_FORMAT "), mux_rate %"
|
||
|
G_GINT64_FORMAT ", GStreamer Time:%" GST_TIME_FORMAT,
|
||
|
scr, scr_adjusted, new_rate,
|
||
|
GST_TIME_ARGS (MPEGTIME_TO_GSTTIME ((guint64) scr - demux->first_scr)));
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "%s mode scr: %" G_GUINT64_FORMAT " at %"
|
||
|
G_GUINT64_FORMAT ", first scr: %" G_GUINT64_FORMAT
|
||
|
" at %" G_GUINT64_FORMAT ", scr rate: %" G_GUINT64_FORMAT
|
||
|
"/%" G_GUINT64_FORMAT "(%f)",
|
||
|
((demux->sink_segment.rate >= 0.0) ? "forward" : "backward"),
|
||
|
scr, demux->last_scr_offset,
|
||
|
demux->first_scr, demux->first_scr_offset,
|
||
|
demux->scr_rate_n, demux->scr_rate_d,
|
||
|
(float) demux->scr_rate_n / demux->scr_rate_d);
|
||
|
|
||
|
/* adjustment of the SCR */
|
||
|
if (demux->current_scr != G_MAXUINT64) {
|
||
|
gint64 diff;
|
||
|
guint64 old_scr, old_mux_rate, bss, adjust;
|
||
|
|
||
|
/* keep SCR of the previous packet */
|
||
|
old_scr = demux->current_scr;
|
||
|
old_mux_rate = demux->mux_rate;
|
||
|
|
||
|
/* Bytes since SCR is the amount we placed in the adapter since then
|
||
|
* (demux->bytes_since_scr) minus the amount remaining in the adapter,
|
||
|
* clamped to >= 0 */
|
||
|
bss = MAX (0, (gint) (demux->bytes_since_scr -
|
||
|
gst_adapter_available (demux->adapter)));
|
||
|
|
||
|
/* estimate the new SCR using the previous one according the notes
|
||
|
on point 2.5.2.2 of the ISO/IEC 13818-1 document */
|
||
|
adjust = (bss * CLOCK_FREQ) / old_mux_rate;
|
||
|
if (demux->sink_segment.rate >= 0.0)
|
||
|
demux->next_scr = old_scr + adjust;
|
||
|
else
|
||
|
demux->next_scr = old_scr - adjust;
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux,
|
||
|
"bss: %" G_GUINT64_FORMAT ", next_scr: %" G_GUINT64_FORMAT
|
||
|
", old_scr: %" G_GUINT64_FORMAT ", scr: %" G_GUINT64_FORMAT,
|
||
|
bss, demux->next_scr, old_scr, scr_adjusted);
|
||
|
|
||
|
/* calculate the absolute deference between the last scr and
|
||
|
the new one */
|
||
|
if (old_scr > scr_adjusted)
|
||
|
diff = old_scr - scr_adjusted;
|
||
|
else
|
||
|
diff = scr_adjusted - old_scr;
|
||
|
|
||
|
/* if the difference is more than 1 second we need to reconfigure
|
||
|
adjustment */
|
||
|
if (diff > CLOCK_FREQ) {
|
||
|
#if 0
|
||
|
demux->scr_adjust = demux->next_scr - scr;
|
||
|
GST_DEBUG_OBJECT (demux, "discont found, diff: %" G_GINT64_FORMAT
|
||
|
", adjust %" G_GINT64_FORMAT, diff, demux->scr_adjust);
|
||
|
scr_adjusted = demux->next_scr;
|
||
|
#else
|
||
|
g_print ("Unexpected SCR diff of %" G_GINT64_FORMAT "\n", diff);
|
||
|
#endif
|
||
|
} else {
|
||
|
demux->next_scr = scr_adjusted;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* update the current_scr and rate members */
|
||
|
demux->mux_rate = new_rate;
|
||
|
demux->current_scr = scr_adjusted;
|
||
|
|
||
|
new_time = MPEGTIME_TO_GSTTIME (scr_adjusted);
|
||
|
if (new_time != GST_CLOCK_TIME_NONE) {
|
||
|
// g_print ("SCR now %" GST_TIME_FORMAT "\n", GST_TIME_ARGS (new_time));
|
||
|
gst_flups_demux_send_segment_updates (demux, new_time);
|
||
|
demux->src_segment.last_stop = new_time;
|
||
|
}
|
||
|
|
||
|
/* Reset the bytes_since_scr value to count the data remaining in the
|
||
|
* adapter */
|
||
|
demux->bytes_since_scr = gst_adapter_available (demux->adapter);
|
||
|
|
||
|
gst_adapter_flush (demux->adapter, length);
|
||
|
ADAPTER_OFFSET_FLUSH (length);
|
||
|
return GST_FLOW_OK;
|
||
|
|
||
|
lost_sync:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "lost sync");
|
||
|
return GST_FLOW_LOST_SYNC;
|
||
|
}
|
||
|
need_more_data:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "need more data");
|
||
|
return GST_FLOW_NEED_MORE_DATA;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static GstFlowReturn
|
||
|
gst_flups_demux_parse_sys_head (GstFluPSDemux * demux)
|
||
|
{
|
||
|
guint16 length;
|
||
|
const guint8 *data;
|
||
|
gboolean csps;
|
||
|
|
||
|
/* start code + length */
|
||
|
if (!(data = gst_adapter_peek (demux->adapter, 6)))
|
||
|
goto need_more_data;
|
||
|
|
||
|
/* skip start code */
|
||
|
data += 4;
|
||
|
|
||
|
length = GST_READ_UINT16_BE (data);
|
||
|
GST_DEBUG_OBJECT (demux, "length %d", length);
|
||
|
|
||
|
length += 6;
|
||
|
|
||
|
if (!(data = gst_adapter_peek (demux->adapter, length)))
|
||
|
goto need_more_data;
|
||
|
|
||
|
/* skip start code and length */
|
||
|
data += 6;
|
||
|
|
||
|
/* marker:1==1 ! rate_bound:22 | marker:1==1 */
|
||
|
if ((*data & 0x80) != 0x80)
|
||
|
goto marker_expected;
|
||
|
|
||
|
{
|
||
|
guint32 rate_bound;
|
||
|
|
||
|
if ((data[2] & 0x01) != 0x01)
|
||
|
goto marker_expected;
|
||
|
|
||
|
rate_bound = ((guint32) data[0] & 0x7f) << 15;
|
||
|
rate_bound |= ((guint32) data[1]) << 7;
|
||
|
rate_bound |= ((guint32) data[2] & 0xfe) >> 1;
|
||
|
rate_bound *= MPEG_MUX_RATE_MULT;
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "rate bound %u", rate_bound);
|
||
|
|
||
|
data += 3;
|
||
|
}
|
||
|
|
||
|
/* audio_bound:6==1 ! fixed:1 | constrained:1 */
|
||
|
{
|
||
|
guint8 audio_bound;
|
||
|
gboolean fixed;
|
||
|
|
||
|
/* max number of simultaneous audio streams active */
|
||
|
audio_bound = (data[0] & 0xfc) >> 2;
|
||
|
/* fixed or variable bitrate */
|
||
|
fixed = (data[0] & 0x02) == 0x02;
|
||
|
/* meeting constraints */
|
||
|
csps = (data[0] & 0x01) == 0x01;
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "audio_bound %d, fixed %d, constrained %d",
|
||
|
audio_bound, fixed, csps);
|
||
|
data += 1;
|
||
|
}
|
||
|
|
||
|
/* audio_lock:1 | video_lock:1 | marker:1==1 | video_bound:5 */
|
||
|
{
|
||
|
gboolean audio_lock;
|
||
|
gboolean video_lock;
|
||
|
guint8 video_bound;
|
||
|
|
||
|
audio_lock = (data[0] & 0x80) == 0x80;
|
||
|
video_lock = (data[0] & 0x40) == 0x40;
|
||
|
|
||
|
if ((data[0] & 0x20) != 0x20)
|
||
|
goto marker_expected;
|
||
|
|
||
|
/* max number of simultaneous video streams active */
|
||
|
video_bound = (data[0] & 0x1f);
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "audio_lock %d, video_lock %d, video_bound %d",
|
||
|
audio_lock, video_lock, video_bound);
|
||
|
data += 1;
|
||
|
}
|
||
|
|
||
|
/* packet_rate_restriction:1 | reserved:7==0x7F */
|
||
|
{
|
||
|
gboolean packet_rate_restriction;
|
||
|
|
||
|
if ((data[0] & 0x7f) != 0x7f)
|
||
|
goto marker_expected;
|
||
|
|
||
|
/* only valid if csps is set */
|
||
|
if (csps) {
|
||
|
packet_rate_restriction = (data[0] & 0x80) == 0x80;
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "packet_rate_restriction %d",
|
||
|
packet_rate_restriction);
|
||
|
}
|
||
|
}
|
||
|
data += 1;
|
||
|
|
||
|
{
|
||
|
gint stream_count = (length - 12) / 3;
|
||
|
gint i;
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "number of streams: %d ", stream_count);
|
||
|
|
||
|
for (i = 0; i < stream_count; i++) {
|
||
|
guint8 stream_id;
|
||
|
gboolean STD_buffer_bound_scale;
|
||
|
guint16 STD_buffer_size_bound;
|
||
|
guint32 buf_byte_size_bound;
|
||
|
|
||
|
stream_id = *data++;
|
||
|
if (!(stream_id & 0x80))
|
||
|
goto sys_len_error;
|
||
|
|
||
|
/* check marker bits */
|
||
|
if ((*data & 0xC0) != 0xC0)
|
||
|
goto no_placeholder_bits;
|
||
|
|
||
|
STD_buffer_bound_scale = *data & 0x20;
|
||
|
STD_buffer_size_bound = ((guint16) (*data++ & 0x1F)) << 8;
|
||
|
STD_buffer_size_bound |= *data++;
|
||
|
|
||
|
if (STD_buffer_bound_scale == 0) {
|
||
|
buf_byte_size_bound = STD_buffer_size_bound * 128;
|
||
|
} else {
|
||
|
buf_byte_size_bound = STD_buffer_size_bound * 1024;
|
||
|
}
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "STD_buffer_bound_scale %d",
|
||
|
STD_buffer_bound_scale);
|
||
|
GST_DEBUG_OBJECT (demux, "STD_buffer_size_bound %d or %d bytes",
|
||
|
STD_buffer_size_bound, buf_byte_size_bound);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
gst_adapter_flush (demux->adapter, length);
|
||
|
ADAPTER_OFFSET_FLUSH (length);
|
||
|
return GST_FLOW_OK;
|
||
|
|
||
|
/* ERRORS */
|
||
|
marker_expected:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "expecting marker");
|
||
|
return GST_FLOW_LOST_SYNC;
|
||
|
}
|
||
|
no_placeholder_bits:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "expecting placeholder bit values"
|
||
|
" '11' after stream id");
|
||
|
return GST_FLOW_LOST_SYNC;
|
||
|
}
|
||
|
sys_len_error:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "error in system header length");
|
||
|
return GST_FLOW_LOST_SYNC;
|
||
|
}
|
||
|
need_more_data:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "need more data");
|
||
|
return GST_FLOW_NEED_MORE_DATA;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static GstFlowReturn
|
||
|
gst_flups_demux_parse_psm (GstFluPSDemux * demux)
|
||
|
{
|
||
|
guint16 length = 0, info_length = 0, es_map_length = 0;
|
||
|
guint8 psm_version = 0;
|
||
|
const guint8 *data, *es_map_base;
|
||
|
gboolean applicable;
|
||
|
|
||
|
/* start code + length */
|
||
|
if (!(data = gst_adapter_peek (demux->adapter, 6)))
|
||
|
goto need_more_data;
|
||
|
|
||
|
/* skip start code */
|
||
|
data += 4;
|
||
|
|
||
|
length = GST_READ_UINT16_BE (data);
|
||
|
GST_DEBUG_OBJECT (demux, "length %u", length);
|
||
|
|
||
|
if (G_UNLIKELY (length > 0x3FA))
|
||
|
goto psm_len_error;
|
||
|
|
||
|
length += 6;
|
||
|
|
||
|
if (!(data = gst_adapter_peek (demux->adapter, length)))
|
||
|
goto need_more_data;
|
||
|
|
||
|
/* skip start code and length */
|
||
|
data += 6;
|
||
|
|
||
|
/* Read PSM applicable bit together with version */
|
||
|
psm_version = GST_READ_UINT8 (data);
|
||
|
applicable = (psm_version & 0x80) >> 7;
|
||
|
psm_version &= 0x1F;
|
||
|
GST_DEBUG_OBJECT (demux, "PSM version %u (applicable now %u)", psm_version,
|
||
|
applicable);
|
||
|
|
||
|
/* Jump over version and marker bit */
|
||
|
data += 2;
|
||
|
|
||
|
/* Read PS info length */
|
||
|
info_length = GST_READ_UINT16_BE (data);
|
||
|
/* Cap it to PSM length - needed bytes for ES map length and CRC */
|
||
|
info_length = MIN (length - 16, info_length);
|
||
|
GST_DEBUG_OBJECT (demux, "PS info length %u bytes", info_length);
|
||
|
|
||
|
/* Jump over that section */
|
||
|
data += (2 + info_length);
|
||
|
|
||
|
/* Read ES map length */
|
||
|
es_map_length = GST_READ_UINT16_BE (data);
|
||
|
/* Cap it to PSM remaining length - CRC */
|
||
|
es_map_length = MIN (length - (16 + info_length), es_map_length);
|
||
|
GST_DEBUG_OBJECT (demux, "ES map length %u bytes", es_map_length);
|
||
|
|
||
|
/* Jump over the size */
|
||
|
data += 2;
|
||
|
|
||
|
/* Now read the ES map */
|
||
|
es_map_base = data;
|
||
|
while (es_map_base + 4 <= data + es_map_length) {
|
||
|
guint8 stream_type = 0, stream_id = 0;
|
||
|
guint16 stream_info_length = 0;
|
||
|
|
||
|
stream_type = GST_READ_UINT8 (es_map_base);
|
||
|
es_map_base++;
|
||
|
stream_id = GST_READ_UINT8 (es_map_base);
|
||
|
es_map_base++;
|
||
|
stream_info_length = GST_READ_UINT16_BE (es_map_base);
|
||
|
es_map_base += 2;
|
||
|
/* Cap stream_info_length */
|
||
|
stream_info_length = MIN (data + es_map_length - es_map_base,
|
||
|
stream_info_length);
|
||
|
|
||
|
GST_DEBUG_OBJECT (demux, "Stream type %02X with id %02X and %u bytes info",
|
||
|
stream_type, stream_id, stream_info_length);
|
||
|
demux->psm[stream_id] = stream_type;
|
||
|
es_map_base += stream_info_length;
|
||
|
}
|
||
|
|
||
|
gst_adapter_flush (demux->adapter, length);
|
||
|
ADAPTER_OFFSET_FLUSH (length);
|
||
|
return GST_FLOW_OK;
|
||
|
|
||
|
psm_len_error:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "error in PSM length");
|
||
|
return GST_FLOW_LOST_SYNC;
|
||
|
}
|
||
|
need_more_data:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "need more data");
|
||
|
return GST_FLOW_NEED_MORE_DATA;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void
|
||
|
gst_flups_demux_resync_cb (GstPESFilter * filter, GstFluPSDemux * demux)
|
||
|
{
|
||
|
}
|
||
|
|
||
|
static GstFlowReturn
|
||
|
gst_flups_demux_data_cb (GstPESFilter * filter, gboolean first,
|
||
|
GstBuffer * buffer, GstFluPSDemux * demux)
|
||
|
{
|
||
|
GstBuffer *out_buf;
|
||
|
GstFlowReturn ret = GST_FLOW_OK;
|
||
|
gint stream_type;
|
||
|
guint32 start_code;
|
||
|
guint8 id;
|
||
|
guint8 *data;
|
||
|
guint datalen;
|
||
|
guint offset = 0;
|
||
|
|
||
|
data = GST_BUFFER_DATA (buffer);
|
||
|
datalen = GST_BUFFER_SIZE (buffer);
|
||
|
|
||
|
start_code = filter->start_code;
|
||
|
id = filter->id;
|
||
|
|
||
|
if (first) {
|
||
|
/* find the stream type */
|
||
|
stream_type = demux->psm[id];
|
||
|
if (stream_type == -1) {
|
||
|
/* no stream type, if PS1, get the new id */
|
||
|
if (start_code == ID_PRIVATE_STREAM_1 && datalen >= 2) {
|
||
|
guint8 nframes;
|
||
|
|
||
|
/* VDR writes A52 streams without any header bytes
|
||
|
* (see ftp://ftp.mplayerhq.hu/MPlayer/samples/MPEG-VOB/vdr-AC3) */
|
||
|
if (datalen >= 4) {
|
||
|
guint hdr = GST_READ_UINT32_BE (data);
|
||
|
|
||
|
if (G_UNLIKELY ((hdr & 0xffff0000) == AC3_SYNC_WORD)) {
|
||
|
id = 0x80;
|
||
|
stream_type = demux->psm[id] = ST_GST_AUDIO_RAWA52;
|
||
|
GST_DEBUG_OBJECT (demux, "Found VDR raw A52 stream");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (G_LIKELY (stream_type == -1)) {
|
||
|
/* new id is in the first byte */
|
||
|
id = data[offset++];
|
||
|
datalen--;
|
||
|
|
||
|
/* and remap */
|
||
|
stream_type = demux->psm[id];
|
||
|
|
||
|
/* Now, if it's a subpicture stream - no more, otherwise
|
||
|
* take the first byte too, since it's the frame count in audio
|
||
|
* streams and our backwards compat convention is to strip it off */
|
||
|
if (stream_type != ST_PS_DVD_SUBPICTURE) {
|
||
|
/* Number of audio frames in this packet */
|
||
|
nframes = data[offset++];
|
||
|
datalen--;
|
||
|
GST_DEBUG_OBJECT (demux, "private type 0x%02x, %d frames", id,
|
||
|
nframes);
|
||
|
} else {
|
||
|
GST_DEBUG_OBJECT (demux, "private type 0x%02x, stream type %d", id,
|
||
|
stream_type);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
if (stream_type == -1)
|
||
|
goto unknown_stream_type;
|
||
|
}
|
||
|
if (filter->pts != -1) {
|
||
|
demux->next_pts = filter->pts + demux->scr_adjust;
|
||
|
GST_DEBUG_OBJECT (demux, "PTS = %" G_GUINT64_FORMAT
|
||
|
"(%" G_GUINT64_FORMAT ")", filter->pts, demux->next_pts);
|
||
|
} else
|
||
|
demux->next_pts = G_MAXUINT64;
|
||
|
|
||
|
if (filter->dts != -1) {
|
||
|
demux->next_dts = filter->dts + demux->scr_adjust;
|
||
|
} else {
|
||
|
demux->next_dts = demux->next_pts;
|
||
|
}
|
||
|
GST_DEBUG_OBJECT (demux, "DTS = orig %" G_GUINT64_FORMAT
|
||
|
" (%" G_GUINT64_FORMAT ")", filter->dts, demux->next_dts);
|
||
|
|
||
|
demux->current_stream = gst_flups_demux_get_stream (demux, id, stream_type);
|
||
|
}
|
||
|
|
||
|
if (demux->current_stream == NULL) {
|
||
|
GST_DEBUG_OBJECT (demux, "Dropping buffer for unknown stream id 0x%02x",
|
||
|
id);
|
||
|
goto done;
|
||
|
}
|
||
|
|
||
|
/* After 2 seconds of bitstream emit no more pads */
|
||
|
if (demux->need_no_more_pads
|
||
|
&& (demux->current_scr - demux->first_scr - demux->scr_adjust) >
|
||
|
2 * CLOCK_FREQ) {
|
||
|
GST_DEBUG_OBJECT (demux, "no more pads, notifying");
|
||
|
gst_element_no_more_pads (GST_ELEMENT_CAST (demux));
|
||
|
demux->need_no_more_pads = FALSE;
|
||
|
}
|
||
|
|
||
|
/* If the stream is not-linked, don't bother creating a sub-buffer
|
||
|
* to send to it, unless we're processing a discont (which resets
|
||
|
* the not-linked status and tries again */
|
||
|
if (demux->current_stream->discont) {
|
||
|
GST_DEBUG_OBJECT (demux, "stream is discont");
|
||
|
demux->current_stream->notlinked = FALSE;
|
||
|
}
|
||
|
|
||
|
if (demux->current_stream->notlinked == FALSE) {
|
||
|
out_buf = gst_buffer_create_sub (buffer, offset, datalen);
|
||
|
|
||
|
ret = gst_flups_demux_send_data (demux, demux->current_stream, out_buf);
|
||
|
if (ret == GST_FLOW_NOT_LINKED) {
|
||
|
demux->current_stream->notlinked = TRUE;
|
||
|
ret = GST_FLOW_OK;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
done:
|
||
|
gst_buffer_unref (buffer);
|
||
|
|
||
|
return ret;
|
||
|
|
||
|
/* ERRORS */
|
||
|
unknown_stream_type:
|
||
|
{
|
||
|
GST_DEBUG_OBJECT (demux, "unknown stream type %02x", id);
|
||
|
ret = GST_FLOW_OK;
|
||
|
goto done;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_resync (GstFluPSDemux * demux, gboolean save)
|
||
|
{
|
||
|
const guint8 *data;
|
||
|
gint avail;
|
||
|
guint32 code;
|
||
|
gint offset;
|
||
|
gboolean found;
|
||
|
|
||
|
avail = gst_adapter_available (demux->adapter);
|
||
|
if (avail < 4)
|
||
|
goto need_data;
|
||
|
|
||
|
/* Common case, read 4 bytes an check it */
|
||
|
data = gst_adapter_peek (demux->adapter, 4);
|
||
|
|
||
|
/* read currect code */
|
||
|
code = GST_READ_UINT32_BE (data);
|
||
|
|
||
|
/* The common case is that the sync code is at 0 bytes offset */
|
||
|
if (G_LIKELY ((code & 0xffffff00) == 0x100L)) {
|
||
|
GST_LOG_OBJECT (demux, "Found resync code %08x after 0 bytes", code);
|
||
|
demux->last_sync_code = code;
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
/* Otherwise, we are starting at byte 4 and we need to search
|
||
|
the sync code in all available data in the adapter */
|
||
|
offset = 4;
|
||
|
if (offset >= avail)
|
||
|
goto need_data; /* Not enough data to find sync */
|
||
|
|
||
|
data = gst_adapter_peek (demux->adapter, avail);
|
||
|
|
||
|
do {
|
||
|
code = (code << 8) | data[offset++];
|
||
|
found = (code & 0xffffff00) == 0x100L;
|
||
|
} while (offset < avail && !found);
|
||
|
|
||
|
if (!save || demux->sink_segment.rate >= 0.0) {
|
||
|
GST_LOG_OBJECT (demux, "flushing %d bytes", offset - 4);
|
||
|
/* forward playback, we can discard and flush the skipped bytes */
|
||
|
gst_adapter_flush (demux->adapter, offset - 4);
|
||
|
ADAPTER_OFFSET_FLUSH (offset - 4);
|
||
|
} else {
|
||
|
if (found) {
|
||
|
GST_LOG_OBJECT (demux, "reverse saving %d bytes", offset - 4);
|
||
|
/* reverse playback, we keep the flushed bytes and we will append them to
|
||
|
* the next buffer in the chain function, which is the previous buffer in
|
||
|
* the stream. */
|
||
|
gst_adapter_push (demux->rev_adapter,
|
||
|
gst_adapter_take_buffer (demux->adapter, offset - 4));
|
||
|
} else {
|
||
|
GST_LOG_OBJECT (demux, "reverse saving %d bytes", avail);
|
||
|
/* nothing found, keep all bytes */
|
||
|
gst_adapter_push (demux->rev_adapter,
|
||
|
gst_adapter_take_buffer (demux->adapter, avail));
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (found) {
|
||
|
GST_LOG_OBJECT (demux, "Found resync code %08x after %d bytes",
|
||
|
code, offset - 4);
|
||
|
demux->last_sync_code = code;
|
||
|
} else {
|
||
|
GST_LOG_OBJECT (demux, "No resync after skipping %d", offset);
|
||
|
}
|
||
|
|
||
|
return found;
|
||
|
|
||
|
need_data:
|
||
|
{
|
||
|
GST_LOG_OBJECT (demux, "we need more data for resync %d", avail);
|
||
|
return FALSE;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_flups_demux_is_pes_sync (guint32 sync)
|
||
|
{
|
||
|
return ((sync & 0xfc) == 0xbc) ||
|
||
|
((sync & 0xe0) == 0xc0) || ((sync & 0xf0) == 0xe0);
|
||
|
}
|
||
|
|
||
|
static GstFlowReturn
|
||
|
gst_flups_demux_chain (GstPad * pad, GstBuffer * buffer)
|
||
|
{
|
||
|
GstFluPSDemux *demux = GST_FLUPS_DEMUX (gst_pad_get_parent (pad));
|
||
|
GstFlowReturn ret = GST_FLOW_OK;
|
||
|
guint32 avail;
|
||
|
gboolean save, discont;
|
||
|
|
||
|
discont = GST_BUFFER_IS_DISCONT (buffer);
|
||
|
|
||
|
if (discont) {
|
||
|
GST_LOG_OBJECT (demux, "Received buffer with discont flag and"
|
||
|
" offset %" G_GUINT64_FORMAT, GST_BUFFER_OFFSET (buffer));
|
||
|
|
||
|
gst_pes_filter_drain (&demux->filter);
|
||
|
gst_flups_demux_mark_discont (demux);
|
||
|
|
||
|
/* mark discont on all streams */
|
||
|
if (demux->sink_segment.rate >= 0.0) {
|
||
|
demux->current_scr = G_MAXUINT64;
|
||
|
demux->bytes_since_scr = 0;
|
||
|
}
|
||
|
} else {
|
||
|
GST_LOG_OBJECT (demux, "Received buffer with offset %" G_GUINT64_FORMAT,
|
||
|
GST_BUFFER_OFFSET (buffer));
|
||
|
}
|
||
|
|
||
|
/* We keep the offset to interpolate SCR */
|
||
|
demux->adapter_offset = GST_BUFFER_OFFSET (buffer);
|
||
|
|
||
|
gst_adapter_push (demux->adapter, buffer);
|
||
|
demux->bytes_since_scr += GST_BUFFER_SIZE (buffer);
|
||
|
|
||
|
avail = gst_adapter_available (demux->rev_adapter);
|
||
|
if (avail > 0) {
|
||
|
GST_LOG_OBJECT (demux, "appending %u saved bytes", avail);
|
||
|
/* if we have a previous reverse chunk, append this now */
|
||
|
/* FIXME this code assumes we receive discont buffers all thei
|
||
|
* time */
|
||
|
gst_adapter_push (demux->adapter,
|
||
|
gst_adapter_take_buffer (demux->rev_adapter, avail));
|
||
|
}
|
||
|
|
||
|
avail = gst_adapter_available (demux->adapter);
|
||
|
GST_LOG_OBJECT (demux, "avail now: %d, state %d", avail, demux->filter.state);
|
||
|
|
||
|
switch (demux->filter.state) {
|
||
|
case STATE_DATA_SKIP:
|
||
|
case STATE_DATA_PUSH:
|
||
|
ret = gst_pes_filter_process (&demux->filter);
|
||
|
break;
|
||
|
case STATE_HEADER_PARSE:
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
switch (ret) {
|
||
|
case GST_FLOW_NEED_MORE_DATA:
|
||
|
/* Go and get more data */
|
||
|
ret = GST_FLOW_OK;
|
||
|
goto done;
|
||
|
case GST_FLOW_LOST_SYNC:
|
||
|
/* for FLOW_OK or lost-sync, carry onto resync */
|
||
|
ret = GST_FLOW_OK;
|
||
|
break;
|
||
|
case GST_FLOW_OK:
|
||
|
break;
|
||
|
default:
|
||
|
/* Any other return value should be sent upstream immediately */
|
||
|
goto done;
|
||
|
}
|
||
|
|
||
|
/* align adapter data to sync boundary, we keep the data up to the next sync
|
||
|
* point. */
|
||
|
save = TRUE;
|
||
|
while (gst_flups_demux_resync (demux, save)) {
|
||
|
gboolean ps_sync = TRUE;
|
||
|
|
||
|
/* now switch on last synced byte */
|
||
|
switch (demux->last_sync_code) {
|
||
|
case ID_PS_PACK_START_CODE:
|
||
|
ret = gst_flups_demux_parse_pack_start (demux);
|
||
|
break;
|
||
|
case ID_PS_SYSTEM_HEADER_START_CODE:
|
||
|
ret = gst_flups_demux_parse_sys_head (demux);
|
||
|
break;
|
||
|
case ID_PS_END_CODE:
|
||
|
ret = GST_FLOW_OK;
|
||
|
goto done;
|
||
|
case ID_PS_PROGRAM_STREAM_MAP:
|
||
|
ret = gst_flups_demux_parse_psm (demux);
|
||
|
break;
|
||
|
default:
|
||
|
if (gst_flups_demux_is_pes_sync (demux->last_sync_code)) {
|
||
|
ret = gst_pes_filter_process (&demux->filter);
|
||
|
} else {
|
||
|
GST_DEBUG_OBJECT (demux, "sync_code=%08x, non PES sync found"
|
||
|
", continuing", demux->last_sync_code);
|
||
|
ps_sync = FALSE;
|
||
|
ret = GST_FLOW_LOST_SYNC;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
/* if we found a ps sync, we stop saving the data, any non-ps sync gets
|
||
|
* saved up to the next ps sync. */
|
||
|
if (ps_sync)
|
||
|
save = FALSE;
|
||
|
|
||
|
switch (ret) {
|
||
|
case GST_FLOW_NEED_MORE_DATA:
|
||
|
GST_DEBUG_OBJECT (demux, "need more data");
|
||
|
ret = GST_FLOW_OK;
|
||
|
goto done;
|
||
|
case GST_FLOW_LOST_SYNC:
|
||
|
if (!save || demux->sink_segment.rate >= 0.0) {
|
||
|
GST_DEBUG_OBJECT (demux, "flushing 3 bytes");
|
||
|
gst_adapter_flush (demux->adapter, 3);
|
||
|
ADAPTER_OFFSET_FLUSH (3);
|
||
|
} else {
|
||
|
GST_DEBUG_OBJECT (demux, "saving 3 bytes");
|
||
|
gst_adapter_push (demux->rev_adapter,
|
||
|
gst_adapter_take_buffer (demux->adapter, 3));
|
||
|
}
|
||
|
ret = GST_FLOW_OK;
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
done:
|
||
|
gst_object_unref (demux);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static GstStateChangeReturn
|
||
|
gst_flups_demux_change_state (GstElement * element, GstStateChange transition)
|
||
|
{
|
||
|
GstFluPSDemux *demux = GST_FLUPS_DEMUX (element);
|
||
|
GstStateChangeReturn result;
|
||
|
|
||
|
switch (transition) {
|
||
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
||
|
demux->adapter = gst_adapter_new ();
|
||
|
demux->rev_adapter = gst_adapter_new ();
|
||
|
demux->adapter_offset = G_MAXUINT64;
|
||
|
gst_pes_filter_init (&demux->filter, demux->adapter,
|
||
|
&demux->adapter_offset);
|
||
|
gst_pes_filter_set_callbacks (&demux->filter,
|
||
|
(GstPESFilterData) gst_flups_demux_data_cb,
|
||
|
(GstPESFilterResync) gst_flups_demux_resync_cb, demux);
|
||
|
demux->filter.gather_pes = TRUE;
|
||
|
demux->first_scr = G_MAXUINT64;
|
||
|
demux->bytes_since_scr = 0;
|
||
|
demux->current_scr = G_MAXUINT64;
|
||
|
demux->base_time = G_MAXUINT64;
|
||
|
demux->scr_rate_n = G_MAXUINT64;
|
||
|
demux->scr_rate_d = G_MAXUINT64;
|
||
|
break;
|
||
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||
|
demux->current_scr = G_MAXUINT64;
|
||
|
demux->mux_rate = G_MAXUINT64;
|
||
|
demux->next_pts = G_MAXUINT64;
|
||
|
demux->next_dts = G_MAXUINT64;
|
||
|
demux->first_scr = G_MAXUINT64;
|
||
|
demux->bytes_since_scr = 0;
|
||
|
demux->base_time = G_MAXUINT64;
|
||
|
demux->scr_rate_n = G_MAXUINT64;
|
||
|
demux->scr_rate_d = G_MAXUINT64;
|
||
|
demux->need_no_more_pads = TRUE;
|
||
|
|
||
|
gst_flups_demux_reset_psm (demux);
|
||
|
gst_segment_init (&demux->sink_segment, GST_FORMAT_UNDEFINED);
|
||
|
gst_segment_init (&demux->src_segment, GST_FORMAT_TIME);
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||
|
|
||
|
switch (transition) {
|
||
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||
|
gst_flups_demux_reset (demux);
|
||
|
break;
|
||
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
||
|
gst_pes_filter_uninit (&demux->filter);
|
||
|
g_object_unref (demux->adapter);
|
||
|
demux->adapter = NULL;
|
||
|
g_object_unref (demux->rev_adapter);
|
||
|
demux->rev_adapter = NULL;
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
gboolean
|
||
|
gst_flups_demux_plugin_init (GstPlugin * plugin)
|
||
|
{
|
||
|
GST_DEBUG_CATEGORY_INIT (gstflupesfilter_debug, "rsnpesfilter", 0,
|
||
|
"MPEG program stream PES filter debug");
|
||
|
|
||
|
GST_DEBUG_CATEGORY_INIT (gstflupsdemux_debug, "rsndvddemux", 0,
|
||
|
"MPEG program stream demuxer debug");
|
||
|
|
||
|
return TRUE;
|
||
|
}
|