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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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4050 lines
117 KiB
C
4050 lines
117 KiB
C
/* GStreamer
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* Copyright (C) 2008-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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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* SECTION:element-mxfdemux
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*
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* mxfdemux demuxes an MXF file into the different contained streams.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v filesrc location=/path/to/mxf ! mxfdemux ! audioconvert ! autoaudiosink
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* ]| This pipeline demuxes an MXF file and outputs one of the contained raw audio streams.
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* </refsect2>
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*/
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/* TODO:
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* - Seeking support: Use IndexTableSegments
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* - Handle timecode tracks correctly (where is this documented?)
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* - Handle drop-frame field of timecode tracks
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* - Handle Generic container system items
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* - Implement correct support for clip-wrapped essence elements.
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* - Post structural metadata and descriptive metadata trees as a message on the bus
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* and send them downstream as event.
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* - Multichannel audio needs channel layouts, define them (SMPTE S320M?).
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* - Correctly handle the different rectangles and aspect-ratio for video
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* - Add more support for non-standard MXF used by Avid (bug #561922).
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* - Fix frame layout stuff, i.e. interlaced/progressive
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* - In pull mode first find the first buffer for every pad before pushing
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* to prevent jumpy playback in the beginning due to resynchronization.
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*
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* - Implement SMPTE D11 essence and the digital cinema/MXF specs
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*
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* - Implement a muxer ;-)
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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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/* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex
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* with newer GLib versions (>= 2.31.0) */
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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#include "mxfdemux.h"
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#include "mxfessence.h"
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#include <string.h>
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static GstStaticPadTemplate mxf_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/mxf")
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);
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static GstStaticPadTemplate mxf_src_template =
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GST_STATIC_PAD_TEMPLATE ("track_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (mxfdemux_debug);
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#define GST_CAT_DEFAULT mxfdemux_debug
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GType gst_mxf_demux_pad_get_type (void);
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G_DEFINE_TYPE (GstMXFDemuxPad, gst_mxf_demux_pad, GST_TYPE_PAD);
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static void
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gst_mxf_demux_pad_finalize (GObject * object)
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{
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GstMXFDemuxPad *pad = GST_MXF_DEMUX_PAD (object);
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if (pad->tags) {
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gst_tag_list_unref (pad->tags);
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pad->tags = NULL;
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}
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G_OBJECT_CLASS (gst_mxf_demux_pad_parent_class)->finalize (object);
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}
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static void
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gst_mxf_demux_pad_class_init (GstMXFDemuxPadClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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gobject_class->finalize = gst_mxf_demux_pad_finalize;
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}
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static void
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gst_mxf_demux_pad_init (GstMXFDemuxPad * pad)
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{
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pad->last_flow = GST_FLOW_OK;
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pad->last_stop = 0;
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}
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enum
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{
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PROP_0,
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PROP_PACKAGE,
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PROP_MAX_DRIFT,
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PROP_STRUCTURE
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};
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static gboolean gst_mxf_demux_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_mxf_demux_src_event (GstPad * pad, GstEvent * event);
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static const GstQueryType *gst_mxf_demux_src_query_type (GstPad * pad);
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static gboolean gst_mxf_demux_src_query (GstPad * pad, GstQuery * query);
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GST_BOILERPLATE (GstMXFDemux, gst_mxf_demux, GstElement, GST_TYPE_ELEMENT);
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static void
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gst_mxf_demux_remove_pad (GstMXFDemuxPad * pad, GstMXFDemux * demux)
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{
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gst_element_remove_pad (GST_ELEMENT (demux), GST_PAD (pad));
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}
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static void
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gst_mxf_demux_remove_pads (GstMXFDemux * demux)
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{
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g_ptr_array_foreach (demux->src, (GFunc) gst_mxf_demux_remove_pad, demux);
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g_ptr_array_foreach (demux->src, (GFunc) gst_object_unref, NULL);
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g_ptr_array_set_size (demux->src, 0);
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}
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static void
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gst_mxf_demux_partition_free (GstMXFDemuxPartition * partition)
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{
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mxf_partition_pack_reset (&partition->partition);
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mxf_primer_pack_reset (&partition->primer);
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g_free (partition);
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}
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static void
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gst_mxf_demux_reset_mxf_state (GstMXFDemux * demux)
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{
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guint i;
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GST_DEBUG_OBJECT (demux, "Resetting MXF state");
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g_list_foreach (demux->partitions, (GFunc) gst_mxf_demux_partition_free,
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NULL);
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g_list_free (demux->partitions);
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demux->partitions = NULL;
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demux->current_partition = NULL;
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for (i = 0; i < demux->essence_tracks->len; i++) {
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GstMXFDemuxEssenceTrack *t =
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&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
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if (t->offsets)
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g_array_free (t->offsets, TRUE);
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g_free (t->mapping_data);
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if (t->tags)
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gst_tag_list_unref (t->tags);
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if (t->caps)
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gst_caps_unref (t->caps);
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}
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g_array_set_size (demux->essence_tracks, 0);
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}
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static void
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gst_mxf_demux_reset_linked_metadata (GstMXFDemux * demux)
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{
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guint i;
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for (i = 0; i < demux->src->len; i++) {
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GstMXFDemuxPad *pad = g_ptr_array_index (demux->src, i);
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pad->material_track = NULL;
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pad->material_package = NULL;
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pad->current_component = NULL;
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}
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for (i = 0; i < demux->essence_tracks->len; i++) {
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GstMXFDemuxEssenceTrack *track =
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&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
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track->source_package = NULL;
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track->source_track = NULL;
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}
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demux->current_package = NULL;
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}
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static void
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gst_mxf_demux_reset_metadata (GstMXFDemux * demux)
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{
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GST_DEBUG_OBJECT (demux, "Resetting metadata");
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g_static_rw_lock_writer_lock (&demux->metadata_lock);
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demux->update_metadata = TRUE;
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demux->metadata_resolved = FALSE;
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gst_mxf_demux_reset_linked_metadata (demux);
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demux->preface = NULL;
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if (demux->metadata) {
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g_hash_table_destroy (demux->metadata);
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}
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demux->metadata = mxf_metadata_hash_table_new ();
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g_static_rw_lock_writer_unlock (&demux->metadata_lock);
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}
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static void
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gst_mxf_demux_reset (GstMXFDemux * demux)
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{
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GST_DEBUG_OBJECT (demux, "cleaning up MXF demuxer");
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demux->flushing = FALSE;
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demux->footer_partition_pack_offset = 0;
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demux->offset = 0;
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demux->pull_footer_metadata = TRUE;
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demux->run_in = -1;
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memset (&demux->current_package_uid, 0, sizeof (MXFUMID));
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gst_segment_init (&demux->segment, GST_FORMAT_TIME);
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if (demux->close_seg_event) {
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gst_event_unref (demux->close_seg_event);
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demux->close_seg_event = NULL;
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}
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gst_adapter_clear (demux->adapter);
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gst_mxf_demux_remove_pads (demux);
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if (demux->random_index_pack) {
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g_array_free (demux->random_index_pack, TRUE);
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demux->random_index_pack = NULL;
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}
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if (demux->pending_index_table_segments) {
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GList *l;
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for (l = demux->pending_index_table_segments; l; l = l->next) {
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MXFIndexTableSegment *s = l->data;
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mxf_index_table_segment_reset (s);
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g_free (s);
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}
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g_list_free (demux->pending_index_table_segments);
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demux->pending_index_table_segments = NULL;
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}
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gst_mxf_demux_reset_mxf_state (demux);
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gst_mxf_demux_reset_metadata (demux);
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}
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static GstFlowReturn
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gst_mxf_demux_combine_flows (GstMXFDemux * demux,
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GstMXFDemuxPad * pad, GstFlowReturn ret)
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{
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guint i;
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/* store the value */
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pad->last_flow = ret;
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/* any other error that is not-linked can be returned right away */
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if (ret != GST_FLOW_NOT_LINKED)
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goto done;
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/* only return NOT_LINKED if all other pads returned NOT_LINKED */
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for (i = 0; i < demux->src->len; i++) {
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GstMXFDemuxPad *opad = g_ptr_array_index (demux->src, i);
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if (opad == NULL)
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continue;
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ret = opad->last_flow;
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/* some other return value (must be SUCCESS but we can return
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* other values as well) */
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if (ret != GST_FLOW_NOT_LINKED)
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goto done;
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}
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/* if we get here, all other pads were unlinked and we return
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* NOT_LINKED then */
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done:
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GST_LOG_OBJECT (demux, "combined return %s", gst_flow_get_name (ret));
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return ret;
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}
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static GstFlowReturn
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gst_mxf_demux_pull_range (GstMXFDemux * demux, guint64 offset,
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guint size, GstBuffer ** buffer)
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{
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GstFlowReturn ret;
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ret = gst_pad_pull_range (demux->sinkpad, offset, size, buffer);
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if (G_UNLIKELY (ret != GST_FLOW_OK)) {
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GST_WARNING_OBJECT (demux,
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"failed when pulling %u bytes from offset %" G_GUINT64_FORMAT ": %s",
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size, offset, gst_flow_get_name (ret));
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*buffer = NULL;
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return ret;
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}
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if (G_UNLIKELY (*buffer && GST_BUFFER_SIZE (*buffer) != size)) {
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GST_WARNING_OBJECT (demux,
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"partial pull got %u when expecting %u from offset %" G_GUINT64_FORMAT,
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GST_BUFFER_SIZE (*buffer), size, offset);
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gst_buffer_unref (*buffer);
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ret = GST_FLOW_UNEXPECTED;
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*buffer = NULL;
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return ret;
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}
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return ret;
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}
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static gboolean
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gst_mxf_demux_push_src_event (GstMXFDemux * demux, GstEvent * event)
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{
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gboolean ret = TRUE;
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guint i;
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GST_DEBUG_OBJECT (demux, "Pushing '%s' event downstream",
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GST_EVENT_TYPE_NAME (event));
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for (i = 0; i < demux->src->len; i++) {
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GstMXFDemuxPad *pad = GST_MXF_DEMUX_PAD (g_ptr_array_index (demux->src, i));
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if (pad->eos && GST_EVENT_TYPE (event) == GST_EVENT_EOS)
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continue;
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ret |= gst_pad_push_event (GST_PAD_CAST (pad), gst_event_ref (event));
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}
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gst_event_unref (event);
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return ret;
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}
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static GstMXFDemuxPad *
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gst_mxf_demux_get_earliest_pad (GstMXFDemux * demux)
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{
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guint i;
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GstClockTime earliest = GST_CLOCK_TIME_NONE;
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GstMXFDemuxPad *pad = NULL;
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for (i = 0; i < demux->src->len; i++) {
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GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
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if (!p->eos && p->last_flow < earliest) {
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earliest = p->last_flow;
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pad = p;
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}
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}
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return pad;
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}
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static gint
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gst_mxf_demux_partition_compare (GstMXFDemuxPartition * a,
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GstMXFDemuxPartition * b)
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{
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return (a->partition.this_partition - b->partition.this_partition);
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}
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static GstFlowReturn
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gst_mxf_demux_handle_partition_pack (GstMXFDemux * demux, const MXFUL * key,
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GstBuffer * buffer)
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{
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MXFPartitionPack partition;
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GList *l;
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GstMXFDemuxPartition *p = NULL;
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GST_DEBUG_OBJECT (demux,
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"Handling partition pack of size %u at offset %"
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G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
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for (l = demux->partitions; l; l = l->next) {
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GstMXFDemuxPartition *tmp = l->data;
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if (tmp->partition.this_partition + demux->run_in == demux->offset &&
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tmp->partition.major_version == 0x0001) {
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GST_DEBUG_OBJECT (demux, "Partition already parsed");
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p = tmp;
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goto out;
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}
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}
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if (!mxf_partition_pack_parse (key, &partition,
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GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
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GST_ERROR_OBJECT (demux, "Parsing partition pack failed");
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return GST_FLOW_ERROR;
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}
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if (partition.this_partition != demux->offset + demux->run_in) {
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GST_WARNING_OBJECT (demux, "Partition with incorrect offset");
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partition.this_partition = demux->offset + demux->run_in;
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}
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if (partition.type == MXF_PARTITION_PACK_HEADER)
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demux->footer_partition_pack_offset = partition.footer_partition;
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for (l = demux->partitions; l; l = l->next) {
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GstMXFDemuxPartition *tmp = l->data;
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if (tmp->partition.this_partition + demux->run_in == demux->offset) {
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p = tmp;
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break;
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}
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}
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if (p) {
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mxf_partition_pack_reset (&p->partition);
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memcpy (&p->partition, &partition, sizeof (MXFPartitionPack));
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} else {
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p = g_new0 (GstMXFDemuxPartition, 1);
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memcpy (&p->partition, &partition, sizeof (MXFPartitionPack));
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demux->partitions =
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g_list_insert_sorted (demux->partitions, p,
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(GCompareFunc) gst_mxf_demux_partition_compare);
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}
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for (l = demux->partitions; l; l = l->next) {
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GstMXFDemuxPartition *a, *b;
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if (l->next == NULL)
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break;
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a = l->data;
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b = l->next->data;
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b->partition.prev_partition = a->partition.this_partition;
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}
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out:
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demux->current_partition = p;
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_mxf_demux_handle_primer_pack (GstMXFDemux * demux, const MXFUL * key,
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GstBuffer * buffer)
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{
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GST_DEBUG_OBJECT (demux,
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"Handling primer pack of size %u at offset %"
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G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
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if (G_UNLIKELY (!demux->current_partition)) {
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GST_ERROR_OBJECT (demux, "Primer pack before partition pack");
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return GST_FLOW_ERROR;
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}
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if (G_UNLIKELY (demux->current_partition->primer.mappings)) {
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GST_DEBUG_OBJECT (demux, "Primer pack already exists");
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return GST_FLOW_OK;
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}
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if (!mxf_primer_pack_parse (key, &demux->current_partition->primer,
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GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
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GST_ERROR_OBJECT (demux, "Parsing primer pack failed");
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return GST_FLOW_ERROR;
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}
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demux->current_partition->primer.offset = demux->offset;
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|
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return GST_FLOW_OK;
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}
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|
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static GstFlowReturn
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gst_mxf_demux_resolve_references (GstMXFDemux * demux)
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{
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GstFlowReturn ret = GST_FLOW_OK;
|
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GHashTableIter iter;
|
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MXFMetadataBase *m = NULL;
|
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GstStructure *structure;
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GstTagList *taglist;
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|
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g_static_rw_lock_writer_lock (&demux->metadata_lock);
|
|
|
|
GST_DEBUG_OBJECT (demux, "Resolve metadata references");
|
|
demux->update_metadata = FALSE;
|
|
|
|
if (!demux->metadata) {
|
|
GST_ERROR_OBJECT (demux, "No metadata yet");
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
g_hash_table_iter_init (&iter, demux->metadata);
|
|
while (g_hash_table_iter_next (&iter, NULL, (gpointer) & m)) {
|
|
m->resolved = MXF_METADATA_BASE_RESOLVE_STATE_NONE;
|
|
}
|
|
|
|
g_hash_table_iter_init (&iter, demux->metadata);
|
|
while (g_hash_table_iter_next (&iter, NULL, (gpointer) & m)) {
|
|
gboolean resolved;
|
|
|
|
resolved = mxf_metadata_base_resolve (m, demux->metadata);
|
|
|
|
/* Resolving can fail for anything but the preface, as the preface
|
|
* will resolve everything required */
|
|
if (!resolved && MXF_IS_METADATA_PREFACE (m)) {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
demux->metadata_resolved = TRUE;
|
|
|
|
taglist = gst_tag_list_new ();
|
|
structure =
|
|
mxf_metadata_base_to_structure (MXF_METADATA_BASE (demux->preface));
|
|
gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, GST_TAG_MXF_STRUCTURE,
|
|
structure, NULL);
|
|
gst_element_found_tags (GST_ELEMENT (demux), taglist);
|
|
gst_structure_free (structure);
|
|
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
|
|
return ret;
|
|
|
|
error:
|
|
demux->metadata_resolved = FALSE;
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static MXFMetadataGenericPackage *
|
|
gst_mxf_demux_find_package (GstMXFDemux * demux, const MXFUMID * umid)
|
|
{
|
|
MXFMetadataGenericPackage *ret = NULL;
|
|
guint i;
|
|
|
|
if (demux->preface->content_storage
|
|
&& demux->preface->content_storage->packages) {
|
|
for (i = 0; i < demux->preface->content_storage->n_packages; i++) {
|
|
MXFMetadataGenericPackage *p =
|
|
demux->preface->content_storage->packages[i];
|
|
|
|
if (!p)
|
|
continue;
|
|
|
|
if (mxf_umid_is_equal (&p->package_uid, umid)) {
|
|
ret = p;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static MXFMetadataGenericPackage *
|
|
gst_mxf_demux_choose_package (GstMXFDemux * demux)
|
|
{
|
|
MXFMetadataGenericPackage *ret = NULL;
|
|
guint i;
|
|
|
|
if (demux->requested_package_string) {
|
|
MXFUMID umid = { {0,}
|
|
};
|
|
|
|
if (!mxf_umid_from_string (demux->requested_package_string, &umid)) {
|
|
GST_ERROR_OBJECT (demux, "Invalid requested package");
|
|
}
|
|
g_free (demux->requested_package_string);
|
|
demux->requested_package_string = NULL;
|
|
|
|
ret = gst_mxf_demux_find_package (demux, &umid);
|
|
}
|
|
|
|
if (!ret && !mxf_umid_is_zero (&demux->current_package_uid))
|
|
ret = gst_mxf_demux_find_package (demux, &demux->current_package_uid);
|
|
|
|
if (ret && (MXF_IS_METADATA_MATERIAL_PACKAGE (ret)
|
|
|| (MXF_IS_METADATA_SOURCE_PACKAGE (ret)
|
|
&& MXF_METADATA_SOURCE_PACKAGE (ret)->top_level)))
|
|
goto done;
|
|
else if (ret)
|
|
GST_WARNING_OBJECT (demux,
|
|
"Current package is not a material package or top-level source package, choosing the first best");
|
|
else if (!mxf_umid_is_zero (&demux->current_package_uid))
|
|
GST_WARNING_OBJECT (demux,
|
|
"Current package not found, choosing the first best");
|
|
|
|
ret = demux->preface->primary_package;
|
|
if (ret && (MXF_IS_METADATA_MATERIAL_PACKAGE (ret)
|
|
|| (MXF_IS_METADATA_SOURCE_PACKAGE (ret)
|
|
&& MXF_METADATA_SOURCE_PACKAGE (ret)->top_level)))
|
|
goto done;
|
|
ret = NULL;
|
|
|
|
for (i = 0; i < demux->preface->content_storage->n_packages; i++) {
|
|
if (demux->preface->content_storage->packages[i] &&
|
|
MXF_IS_METADATA_MATERIAL_PACKAGE (demux->preface->content_storage->
|
|
packages[i])) {
|
|
ret =
|
|
MXF_METADATA_GENERIC_PACKAGE (demux->preface->content_storage->
|
|
packages[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!ret) {
|
|
GST_ERROR_OBJECT (demux, "No material package");
|
|
return NULL;
|
|
}
|
|
|
|
done:
|
|
if (mxf_umid_is_equal (&ret->package_uid, &demux->current_package_uid)) {
|
|
gchar current_package_string[96];
|
|
GstTagList *tags = gst_tag_list_new ();
|
|
|
|
gst_mxf_demux_remove_pads (demux);
|
|
memcpy (&demux->current_package_uid, &ret->package_uid, 32);
|
|
|
|
mxf_umid_to_string (&ret->package_uid, current_package_string);
|
|
demux->current_package_string = g_strdup (current_package_string);
|
|
g_object_notify (G_OBJECT (demux), "package");
|
|
|
|
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_MXF_UMID,
|
|
demux->current_package_string, NULL);
|
|
gst_element_found_tags (GST_ELEMENT_CAST (demux), tags);
|
|
}
|
|
demux->current_package = ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
|
|
{
|
|
guint i, j, k;
|
|
|
|
g_return_val_if_fail (demux->preface->content_storage, GST_FLOW_ERROR);
|
|
g_return_val_if_fail (demux->preface->content_storage->essence_container_data,
|
|
GST_FLOW_ERROR);
|
|
|
|
for (i = 0; i < demux->preface->content_storage->n_essence_container_data;
|
|
i++) {
|
|
MXFMetadataEssenceContainerData *edata;
|
|
MXFMetadataSourcePackage *package;
|
|
|
|
if (demux->preface->content_storage->essence_container_data[i] == NULL)
|
|
continue;
|
|
|
|
edata = demux->preface->content_storage->essence_container_data[i];
|
|
|
|
if (!edata->linked_package) {
|
|
GST_WARNING_OBJECT (demux, "Linked package not resolved");
|
|
continue;
|
|
}
|
|
|
|
package = edata->linked_package;
|
|
|
|
if (!package->parent.tracks) {
|
|
GST_WARNING_OBJECT (demux, "Linked package with no resolved tracks");
|
|
continue;
|
|
}
|
|
|
|
for (j = 0; j < package->parent.n_tracks; j++) {
|
|
MXFMetadataTimelineTrack *track;
|
|
GstMXFDemuxEssenceTrack *etrack = NULL;
|
|
GstCaps *caps = NULL;
|
|
gboolean new = FALSE;
|
|
|
|
if (!package->parent.tracks[j]
|
|
|| !MXF_IS_METADATA_TIMELINE_TRACK (package->parent.tracks[j]))
|
|
continue;
|
|
|
|
track = MXF_METADATA_TIMELINE_TRACK (package->parent.tracks[j]);
|
|
if ((track->parent.type & 0xf0) != 0x30)
|
|
continue;
|
|
|
|
if (track->edit_rate.n <= 0 || track->edit_rate.d <= 0) {
|
|
GST_WARNING_OBJECT (demux, "Invalid edit rate");
|
|
continue;
|
|
}
|
|
|
|
for (k = 0; k < demux->essence_tracks->len; k++) {
|
|
GstMXFDemuxEssenceTrack *tmp =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
|
|
k);
|
|
|
|
if (tmp->track_number == track->parent.track_number &&
|
|
tmp->body_sid == edata->body_sid) {
|
|
if (tmp->track_id != track->parent.track_id ||
|
|
!mxf_umid_is_equal (&tmp->source_package_uid,
|
|
&package->parent.package_uid)) {
|
|
GST_ERROR_OBJECT (demux, "There already exists a different track "
|
|
"with this track number and body sid but a different source "
|
|
"or source track id -- ignoring");
|
|
continue;
|
|
}
|
|
etrack = tmp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!etrack) {
|
|
GstMXFDemuxEssenceTrack tmp;
|
|
|
|
memset (&tmp, 0, sizeof (tmp));
|
|
tmp.body_sid = edata->body_sid;
|
|
tmp.track_number = track->parent.track_number;
|
|
tmp.track_id = track->parent.track_id;
|
|
memcpy (&tmp.source_package_uid, &package->parent.package_uid, 32);
|
|
|
|
if (demux->current_partition->partition.body_sid == edata->body_sid &&
|
|
demux->current_partition->partition.body_offset == 0)
|
|
tmp.position = 0;
|
|
else
|
|
tmp.position = -1;
|
|
|
|
g_array_append_val (demux->essence_tracks, tmp);
|
|
etrack =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
|
|
demux->essence_tracks->len - 1);
|
|
new = TRUE;
|
|
}
|
|
|
|
etrack->source_package = NULL;
|
|
etrack->source_track = NULL;
|
|
|
|
if (!track->parent.sequence) {
|
|
GST_WARNING_OBJECT (demux, "Source track has no sequence");
|
|
goto next;
|
|
}
|
|
|
|
if (track->parent.n_descriptor == 0) {
|
|
GST_WARNING_OBJECT (demux, "Source track has no descriptors");
|
|
goto next;
|
|
}
|
|
|
|
if (track->parent.sequence->duration > etrack->duration)
|
|
etrack->duration = track->parent.sequence->duration;
|
|
|
|
g_free (etrack->mapping_data);
|
|
etrack->mapping_data = NULL;
|
|
etrack->handler = NULL;
|
|
etrack->handle_func = NULL;
|
|
if (etrack->tags)
|
|
gst_tag_list_unref (etrack->tags);
|
|
etrack->tags = NULL;
|
|
|
|
etrack->handler = mxf_essence_element_handler_find (track);
|
|
if (!etrack->handler) {
|
|
gchar essence_container[48];
|
|
gchar essence_compression[48];
|
|
gchar *name;
|
|
|
|
GST_WARNING_OBJECT (demux,
|
|
"No essence element handler for track %u found", i);
|
|
|
|
mxf_ul_to_string (&track->parent.descriptor[0]->essence_container,
|
|
essence_container);
|
|
|
|
if (track->parent.type == MXF_METADATA_TRACK_PICTURE_ESSENCE) {
|
|
if (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->parent.
|
|
descriptor[0]))
|
|
mxf_ul_to_string (&MXF_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR
|
|
(track->parent.descriptor[0])->picture_essence_coding,
|
|
essence_compression);
|
|
|
|
name =
|
|
g_strdup_printf ("video/x-mxf-%s-%s", essence_container,
|
|
essence_compression);
|
|
} else if (track->parent.type == MXF_METADATA_TRACK_SOUND_ESSENCE) {
|
|
if (MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track->parent.
|
|
descriptor[0]))
|
|
mxf_ul_to_string (&MXF_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR
|
|
(track->parent.descriptor[0])->sound_essence_compression,
|
|
essence_compression);
|
|
|
|
name =
|
|
g_strdup_printf ("audio/x-mxf-%s-%s", essence_container,
|
|
essence_compression);
|
|
} else if (track->parent.type == MXF_METADATA_TRACK_DATA_ESSENCE) {
|
|
if (MXF_IS_METADATA_GENERIC_DATA_ESSENCE_DESCRIPTOR (track->parent.
|
|
descriptor[0]))
|
|
mxf_ul_to_string (&MXF_METADATA_GENERIC_DATA_ESSENCE_DESCRIPTOR
|
|
(track->parent.descriptor[0])->data_essence_coding,
|
|
essence_compression);
|
|
|
|
name =
|
|
g_strdup_printf ("application/x-mxf-%s-%s", essence_container,
|
|
essence_compression);
|
|
} else {
|
|
name = NULL;
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
caps = gst_caps_new_simple (name, NULL);
|
|
g_free (name);
|
|
} else {
|
|
caps =
|
|
etrack->handler->create_caps (track, &etrack->tags,
|
|
&etrack->handle_func, &etrack->mapping_data);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Created caps %" GST_PTR_FORMAT, caps);
|
|
|
|
if (!caps && new) {
|
|
GST_WARNING_OBJECT (demux, "No caps created, ignoring stream");
|
|
g_free (etrack->mapping_data);
|
|
etrack->mapping_data = NULL;
|
|
if (etrack->tags)
|
|
gst_tag_list_unref (etrack->tags);
|
|
goto next;
|
|
} else if (!caps) {
|
|
GST_WARNING_OBJECT (demux, "Couldn't create updated caps for stream");
|
|
} else if (!etrack->caps || !gst_caps_is_equal (etrack->caps, caps)) {
|
|
if (etrack->caps)
|
|
gst_caps_unref (etrack->caps);
|
|
etrack->caps = caps;
|
|
} else {
|
|
gst_caps_unref (caps);
|
|
caps = NULL;
|
|
}
|
|
|
|
etrack->source_package = package;
|
|
etrack->source_track = track;
|
|
continue;
|
|
|
|
next:
|
|
if (new) {
|
|
g_free (etrack->mapping_data);
|
|
if (etrack->tags)
|
|
gst_tag_list_unref (etrack->tags);
|
|
if (etrack->caps)
|
|
gst_caps_unref (etrack->caps);
|
|
|
|
g_array_remove_index (demux->essence_tracks,
|
|
demux->essence_tracks->len - 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (demux->essence_tracks->len == 0) {
|
|
GST_ERROR_OBJECT (demux, "No valid essence tracks in this file");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *etrack =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
if (!etrack->source_package || !etrack->source_track || !etrack->caps) {
|
|
GST_ERROR_OBJECT (demux, "Failed to update essence track %u", i);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_update_tracks (GstMXFDemux * demux)
|
|
{
|
|
MXFMetadataGenericPackage *current_package = NULL;
|
|
guint i, j, k;
|
|
gboolean first_run;
|
|
guint component_index;
|
|
GstFlowReturn ret;
|
|
GList *pads = NULL, *l;
|
|
|
|
g_static_rw_lock_writer_lock (&demux->metadata_lock);
|
|
GST_DEBUG_OBJECT (demux, "Updating tracks");
|
|
|
|
if ((ret = gst_mxf_demux_update_essence_tracks (demux)) != GST_FLOW_OK) {
|
|
goto error;
|
|
}
|
|
|
|
current_package = gst_mxf_demux_choose_package (demux);
|
|
|
|
if (!current_package) {
|
|
GST_ERROR_OBJECT (demux, "Unable to find current package");
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
} else if (!current_package->tracks) {
|
|
GST_ERROR_OBJECT (demux, "Current package has no (resolved) tracks");
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
} else if (!current_package->n_essence_tracks) {
|
|
GST_ERROR_OBJECT (demux, "Current package has no essence tracks");
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
|
|
first_run = (demux->src->len == 0);
|
|
|
|
for (i = 0; i < current_package->n_tracks; i++) {
|
|
MXFMetadataTimelineTrack *track = NULL;
|
|
MXFMetadataSequence *sequence;
|
|
MXFMetadataSourceClip *component = NULL;
|
|
MXFMetadataSourcePackage *source_package = NULL;
|
|
MXFMetadataTimelineTrack *source_track = NULL;
|
|
GstMXFDemuxEssenceTrack *etrack = NULL;
|
|
GstMXFDemuxPad *pad = NULL;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Handling track %u", i);
|
|
|
|
if (!current_package->tracks[i]) {
|
|
GST_WARNING_OBJECT (demux, "Unresolved track");
|
|
continue;
|
|
}
|
|
|
|
if (!MXF_IS_METADATA_TIMELINE_TRACK (current_package->tracks[i])) {
|
|
GST_DEBUG_OBJECT (demux, "No timeline track");
|
|
continue;
|
|
}
|
|
|
|
track = MXF_METADATA_TIMELINE_TRACK (current_package->tracks[i]);
|
|
|
|
if (!first_run) {
|
|
/* Find pad from track_id */
|
|
for (j = 0; j < demux->src->len; j++) {
|
|
GstMXFDemuxPad *tmp = g_ptr_array_index (demux->src, j);
|
|
|
|
if (tmp->track_id == track->parent.track_id) {
|
|
pad = tmp;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pad)
|
|
component_index = pad->current_component_index;
|
|
else
|
|
component_index = 0;
|
|
|
|
if (!track->parent.sequence) {
|
|
GST_WARNING_OBJECT (demux, "Track with no sequence");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
sequence = track->parent.sequence;
|
|
|
|
if (MXF_IS_METADATA_SOURCE_PACKAGE (current_package)) {
|
|
GST_DEBUG_OBJECT (demux, "Playing source package");
|
|
|
|
component = NULL;
|
|
source_package = MXF_METADATA_SOURCE_PACKAGE (current_package);
|
|
source_track = track;
|
|
} else if (sequence->structural_components
|
|
&&
|
|
MXF_IS_METADATA_SOURCE_CLIP (sequence->structural_components
|
|
[component_index])) {
|
|
GST_DEBUG_OBJECT (demux, "Playing material package");
|
|
|
|
component =
|
|
MXF_METADATA_SOURCE_CLIP (sequence->structural_components
|
|
[component_index]);
|
|
|
|
if (component->source_package && component->source_package->top_level &&
|
|
MXF_METADATA_GENERIC_PACKAGE (component->source_package)->tracks) {
|
|
MXFMetadataGenericPackage *tmp_pkg =
|
|
MXF_METADATA_GENERIC_PACKAGE (component->source_package);
|
|
|
|
source_package = component->source_package;
|
|
|
|
for (k = 0; k < tmp_pkg->n_tracks; k++) {
|
|
MXFMetadataTrack *tmp = tmp_pkg->tracks[k];
|
|
|
|
if (tmp->track_id == component->source_track_id) {
|
|
source_track = MXF_METADATA_TIMELINE_TRACK (tmp);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (track->parent.type && (track->parent.type & 0xf0) != 0x30) {
|
|
GST_DEBUG_OBJECT (demux, "No essence track");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (!source_package || track->parent.type == MXF_METADATA_TRACK_UNKNOWN
|
|
|| !source_track) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"No source package or track type for track found");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
for (k = 0; k < demux->essence_tracks->len; k++) {
|
|
GstMXFDemuxEssenceTrack *tmp =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, k);
|
|
|
|
if (tmp->source_package == source_package &&
|
|
tmp->source_track == source_track) {
|
|
etrack = tmp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!etrack) {
|
|
GST_WARNING_OBJECT (demux, "No essence track for this track found");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (track->edit_rate.n <= 0 || track->edit_rate.d <= 0 ||
|
|
source_track->edit_rate.n <= 0 || source_track->edit_rate.d <= 0) {
|
|
GST_WARNING_OBJECT (demux, "Track has an invalid edit rate");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (MXF_IS_METADATA_MATERIAL_PACKAGE (current_package) && !component) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Playing material package but found no component for track");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (!source_package->descriptor) {
|
|
GST_WARNING_OBJECT (demux, "Source package has no descriptors");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (!source_track->parent.descriptor) {
|
|
GST_WARNING_OBJECT (demux, "No descriptor found for track");
|
|
if (!pad) {
|
|
continue;
|
|
} else {
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (!pad && first_run) {
|
|
GstPadTemplate *templ;
|
|
gchar *pad_name;
|
|
|
|
templ =
|
|
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (demux),
|
|
"track_%u");
|
|
pad_name = g_strdup_printf ("track_%u", track->parent.track_id);
|
|
|
|
g_assert (templ != NULL);
|
|
|
|
/* Create pad */
|
|
pad = (GstMXFDemuxPad *) g_object_new (GST_TYPE_MXF_DEMUX_PAD,
|
|
"name", pad_name, "direction", GST_PAD_SRC, "template", templ, NULL);
|
|
pad->need_segment = TRUE;
|
|
pad->eos = FALSE;
|
|
g_free (pad_name);
|
|
}
|
|
|
|
if (!pad) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Not the first pad addition run, ignoring new track");
|
|
continue;
|
|
}
|
|
|
|
/* Update pad */
|
|
pad->track_id = track->parent.track_id;
|
|
|
|
pad->material_package = current_package;
|
|
pad->material_track = track;
|
|
|
|
/* If we just added the pad initialize for the current component */
|
|
if (first_run && MXF_IS_METADATA_MATERIAL_PACKAGE (current_package)) {
|
|
pad->current_component_index = 0;
|
|
pad->current_component_start = source_track->origin;
|
|
|
|
if (component->parent.duration >= -1)
|
|
pad->current_component_duration = component->parent.duration;
|
|
else
|
|
pad->current_component_duration = -1;
|
|
|
|
if (track->edit_rate.n != source_track->edit_rate.n ||
|
|
track->edit_rate.n != source_track->edit_rate.n) {
|
|
pad->current_component_start +=
|
|
gst_util_uint64_scale (component->start_position,
|
|
source_track->edit_rate.n * track->edit_rate.d,
|
|
source_track->edit_rate.d * track->edit_rate.n);
|
|
|
|
if (pad->current_component_duration != -1)
|
|
pad->current_component_duration =
|
|
gst_util_uint64_scale (pad->current_component_duration,
|
|
source_track->edit_rate.n * track->edit_rate.d,
|
|
source_track->edit_rate.d * track->edit_rate.n);
|
|
} else {
|
|
pad->current_component_start += component->start_position;
|
|
}
|
|
pad->current_essence_track_position = pad->current_component_start;
|
|
}
|
|
|
|
/* NULL iff playing a source package */
|
|
pad->current_component = component;
|
|
|
|
pad->current_essence_track = etrack;
|
|
|
|
if (etrack->tags) {
|
|
if (pad->tags)
|
|
gst_tag_list_insert (pad->tags, etrack->tags, GST_TAG_MERGE_REPLACE);
|
|
else
|
|
pad->tags = gst_tag_list_copy (etrack->tags);
|
|
}
|
|
|
|
if (GST_PAD_CAPS (pad)
|
|
&& !gst_caps_is_equal (GST_PAD_CAPS (pad), etrack->caps)) {
|
|
gst_pad_set_caps (GST_PAD_CAST (pad), etrack->caps);
|
|
} else if (!GST_PAD_CAPS (pad)) {
|
|
gst_pad_set_caps (GST_PAD_CAST (pad), etrack->caps);
|
|
|
|
gst_pad_set_event_function (GST_PAD_CAST (pad),
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_src_event));
|
|
|
|
gst_pad_set_query_type_function (GST_PAD_CAST (pad),
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_src_query_type));
|
|
gst_pad_set_query_function (GST_PAD_CAST (pad),
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_src_query));
|
|
|
|
gst_pad_use_fixed_caps (GST_PAD_CAST (pad));
|
|
gst_pad_set_active (GST_PAD_CAST (pad), TRUE);
|
|
|
|
pads = g_list_prepend (pads, gst_object_ref (pad));
|
|
|
|
g_ptr_array_add (demux->src, pad);
|
|
pad->discont = TRUE;
|
|
}
|
|
}
|
|
|
|
if (demux->src->len > 0) {
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *pad = g_ptr_array_index (demux->src, i);
|
|
|
|
if (!pad->material_track || !pad->material_package) {
|
|
GST_ERROR_OBJECT (demux, "Unable to update existing pad");
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
}
|
|
} else {
|
|
GST_ERROR_OBJECT (demux, "Couldn't create any streams");
|
|
ret = GST_FLOW_ERROR;
|
|
goto error;
|
|
}
|
|
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
|
|
for (l = pads; l; l = l->next)
|
|
gst_element_add_pad (GST_ELEMENT_CAST (demux), l->data);
|
|
g_list_free (pads);
|
|
|
|
if (first_run)
|
|
gst_element_no_more_pads (GST_ELEMENT_CAST (demux));
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
error:
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_metadata (GstMXFDemux * demux, const MXFUL * key,
|
|
GstBuffer * buffer)
|
|
{
|
|
guint16 type;
|
|
MXFMetadata *metadata = NULL, *old = NULL;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
type = GST_READ_UINT16_BE (key->u + 13);
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Handling metadata of size %u at offset %"
|
|
G_GUINT64_FORMAT " of type 0x%04x", GST_BUFFER_SIZE (buffer),
|
|
demux->offset, type);
|
|
|
|
if (G_UNLIKELY (!demux->current_partition)) {
|
|
GST_ERROR_OBJECT (demux, "Partition pack doesn't exist");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (G_UNLIKELY (!demux->current_partition->primer.mappings)) {
|
|
GST_ERROR_OBJECT (demux, "Primer pack doesn't exists");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (demux->current_partition->parsed_metadata) {
|
|
GST_DEBUG_OBJECT (demux, "Metadata of this partition was already parsed");
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
metadata =
|
|
mxf_metadata_new (type, &demux->current_partition->primer, demux->offset,
|
|
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
|
|
|
|
if (!metadata) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Unknown or unhandled metadata of type 0x%04x", type);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
old =
|
|
g_hash_table_lookup (demux->metadata,
|
|
&MXF_METADATA_BASE (metadata)->instance_uid);
|
|
|
|
if (old && G_TYPE_FROM_INSTANCE (old) != G_TYPE_FROM_INSTANCE (metadata)) {
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
gchar str[48];
|
|
#endif
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Metadata with instance uid %s already exists and has different type '%s',"
|
|
" expected '%s'",
|
|
mxf_uuid_to_string (&MXF_METADATA_BASE (metadata)->instance_uid, str),
|
|
g_type_name (G_TYPE_FROM_INSTANCE (old)),
|
|
g_type_name (G_TYPE_FROM_INSTANCE (metadata)));
|
|
g_object_unref (metadata);
|
|
return GST_FLOW_ERROR;
|
|
} else if (old
|
|
&& MXF_METADATA_BASE (old)->offset >=
|
|
MXF_METADATA_BASE (metadata)->offset) {
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
gchar str[48];
|
|
#endif
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Metadata with instance uid %s already exists and is newer",
|
|
mxf_uuid_to_string (&MXF_METADATA_BASE (metadata)->instance_uid, str));
|
|
g_object_unref (metadata);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
g_static_rw_lock_writer_lock (&demux->metadata_lock);
|
|
demux->update_metadata = TRUE;
|
|
|
|
if (MXF_IS_METADATA_PREFACE (metadata)) {
|
|
demux->preface = MXF_METADATA_PREFACE (metadata);
|
|
}
|
|
|
|
gst_mxf_demux_reset_linked_metadata (demux);
|
|
|
|
g_hash_table_replace (demux->metadata,
|
|
&MXF_METADATA_BASE (metadata)->instance_uid, metadata);
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_descriptive_metadata (GstMXFDemux * demux,
|
|
const MXFUL * key, GstBuffer * buffer)
|
|
{
|
|
guint32 type;
|
|
guint8 scheme;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
MXFDescriptiveMetadata *m = NULL, *old = NULL;
|
|
|
|
scheme = GST_READ_UINT8 (key->u + 12);
|
|
type = GST_READ_UINT24_BE (key->u + 13);
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Handling descriptive metadata of size %u at offset %"
|
|
G_GUINT64_FORMAT " with scheme 0x%02x and type 0x%06x",
|
|
GST_BUFFER_SIZE (buffer), demux->offset, scheme, type);
|
|
|
|
if (G_UNLIKELY (!demux->current_partition)) {
|
|
GST_ERROR_OBJECT (demux, "Partition pack doesn't exist");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (G_UNLIKELY (!demux->current_partition->primer.mappings)) {
|
|
GST_ERROR_OBJECT (demux, "Primer pack doesn't exists");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (demux->current_partition->parsed_metadata) {
|
|
GST_DEBUG_OBJECT (demux, "Metadata of this partition was already parsed");
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
m = mxf_descriptive_metadata_new (scheme, type,
|
|
&demux->current_partition->primer, demux->offset,
|
|
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
|
|
|
|
if (!m) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Unknown or unhandled descriptive metadata of scheme 0x%02x and type 0x%06x",
|
|
scheme, type);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
old =
|
|
g_hash_table_lookup (demux->metadata,
|
|
&MXF_METADATA_BASE (m)->instance_uid);
|
|
|
|
if (old && G_TYPE_FROM_INSTANCE (old) != G_TYPE_FROM_INSTANCE (m)) {
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
gchar str[48];
|
|
#endif
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Metadata with instance uid %s already exists and has different type '%s',"
|
|
" expected '%s'",
|
|
mxf_uuid_to_string (&MXF_METADATA_BASE (m)->instance_uid, str),
|
|
g_type_name (G_TYPE_FROM_INSTANCE (old)),
|
|
g_type_name (G_TYPE_FROM_INSTANCE (m)));
|
|
g_object_unref (m);
|
|
return GST_FLOW_ERROR;
|
|
} else if (old
|
|
&& MXF_METADATA_BASE (old)->offset >= MXF_METADATA_BASE (m)->offset) {
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
gchar str[48];
|
|
#endif
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Metadata with instance uid %s already exists and is newer",
|
|
mxf_uuid_to_string (&MXF_METADATA_BASE (m)->instance_uid, str));
|
|
g_object_unref (m);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
g_static_rw_lock_writer_lock (&demux->metadata_lock);
|
|
|
|
demux->update_metadata = TRUE;
|
|
gst_mxf_demux_reset_linked_metadata (demux);
|
|
|
|
g_hash_table_replace (demux->metadata, &MXF_METADATA_BASE (m)->instance_uid,
|
|
m);
|
|
|
|
g_static_rw_lock_writer_unlock (&demux->metadata_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_generic_container_system_item (GstMXFDemux * demux,
|
|
const MXFUL * key, GstBuffer * buffer)
|
|
{
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Handling generic container system item of size %u"
|
|
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
|
|
|
|
if (demux->current_partition->essence_container_offset == 0)
|
|
demux->current_partition->essence_container_offset =
|
|
demux->offset - demux->current_partition->partition.this_partition -
|
|
demux->run_in;
|
|
|
|
/* TODO: parse this */
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_pad_set_component (GstMXFDemux * demux, GstMXFDemuxPad * pad,
|
|
guint i)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
MXFMetadataSequence *sequence;
|
|
guint k;
|
|
MXFMetadataSourcePackage *source_package = NULL;
|
|
MXFMetadataTimelineTrack *source_track = NULL;
|
|
gboolean update = (pad->current_component_index != i);
|
|
|
|
pad->current_component_index = i;
|
|
|
|
sequence = pad->material_track->parent.sequence;
|
|
|
|
if (pad->current_component_index >= sequence->n_structural_components) {
|
|
GST_DEBUG_OBJECT (demux, "After last structural component");
|
|
pad->current_component_index = sequence->n_structural_components - 1;
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Switching to component %u",
|
|
pad->current_component_index);
|
|
|
|
pad->current_component =
|
|
MXF_METADATA_SOURCE_CLIP (sequence->structural_components[pad->
|
|
current_component_index]);
|
|
if (pad->current_component == NULL) {
|
|
GST_ERROR_OBJECT (demux, "No such structural component");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (!pad->current_component->source_package
|
|
|| !pad->current_component->source_package->top_level
|
|
|| !MXF_METADATA_GENERIC_PACKAGE (pad->current_component->
|
|
source_package)->tracks) {
|
|
GST_ERROR_OBJECT (demux, "Invalid component");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
source_package = pad->current_component->source_package;
|
|
|
|
for (k = 0; k < source_package->parent.n_tracks; k++) {
|
|
MXFMetadataTrack *tmp = source_package->parent.tracks[k];
|
|
|
|
if (tmp->track_id == pad->current_component->source_track_id) {
|
|
source_track = MXF_METADATA_TIMELINE_TRACK (tmp);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!source_track) {
|
|
GST_ERROR_OBJECT (demux, "No source track found");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
pad->current_essence_track = NULL;
|
|
|
|
for (k = 0; k < demux->essence_tracks->len; k++) {
|
|
GstMXFDemuxEssenceTrack *tmp =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, k);
|
|
|
|
if (tmp->source_package == source_package &&
|
|
tmp->source_track == source_track) {
|
|
pad->current_essence_track = tmp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!pad->current_essence_track) {
|
|
GST_ERROR_OBJECT (demux, "No corresponding essence track found");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (!source_package->descriptor) {
|
|
GST_ERROR_OBJECT (demux, "Source package has no descriptors");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (!source_track->parent.descriptor) {
|
|
GST_ERROR_OBJECT (demux, "No descriptor found for track");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (source_track->edit_rate.n <= 0 || source_track->edit_rate.d <= 0) {
|
|
GST_ERROR_OBJECT (demux, "Source track has invalid edit rate");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
pad->current_component_start = source_track->origin;
|
|
if (pad->current_component->parent.duration >= -1)
|
|
pad->current_component_duration = pad->current_component->parent.duration;
|
|
else
|
|
pad->current_component_duration = -1;
|
|
|
|
if (pad->material_track->edit_rate.n != source_track->edit_rate.n ||
|
|
pad->material_track->edit_rate.n != source_track->edit_rate.n) {
|
|
pad->current_component_start +=
|
|
gst_util_uint64_scale (pad->current_component->start_position,
|
|
source_track->edit_rate.n * pad->material_track->edit_rate.d,
|
|
source_track->edit_rate.d * pad->material_track->edit_rate.n);
|
|
|
|
if (pad->current_component_duration != -1)
|
|
pad->current_component_duration =
|
|
gst_util_uint64_scale (pad->current_component_duration,
|
|
source_track->edit_rate.n * pad->material_track->edit_rate.d,
|
|
source_track->edit_rate.d * pad->material_track->edit_rate.n);
|
|
} else {
|
|
pad->current_component_start += pad->current_component->start_position;
|
|
}
|
|
pad->current_essence_track_position = pad->current_component_start;
|
|
|
|
|
|
if (!gst_caps_is_equal (GST_PAD_CAPS (pad), pad->current_essence_track->caps)) {
|
|
gst_pad_set_caps (GST_PAD_CAST (pad), pad->current_essence_track->caps);
|
|
}
|
|
|
|
if (update) {
|
|
if (pad->tags) {
|
|
if (pad->current_essence_track->tags)
|
|
gst_tag_list_insert (pad->tags, pad->current_essence_track->tags,
|
|
GST_TAG_MERGE_REPLACE);
|
|
} else {
|
|
if (pad->current_essence_track->tags)
|
|
pad->tags = gst_tag_list_copy (pad->current_essence_track->tags);
|
|
}
|
|
}
|
|
|
|
if (ret == GST_FLOW_UNEXPECTED) {
|
|
pad->current_essence_track_position += pad->current_component_duration;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
|
|
const MXFUL * key, GstBuffer * buffer, gboolean peek)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint32 track_number;
|
|
guint i;
|
|
GstBuffer *inbuf = NULL;
|
|
GstBuffer *outbuf = NULL;
|
|
GstMXFDemuxEssenceTrack *etrack = NULL;
|
|
gboolean keyframe = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Handling generic container essence element of size %u"
|
|
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
|
|
|
|
GST_DEBUG_OBJECT (demux, " type = 0x%02x", key->u[12]);
|
|
GST_DEBUG_OBJECT (demux, " essence element count = 0x%02x", key->u[13]);
|
|
GST_DEBUG_OBJECT (demux, " essence element type = 0x%02x", key->u[14]);
|
|
GST_DEBUG_OBJECT (demux, " essence element number = 0x%02x", key->u[15]);
|
|
|
|
if (demux->current_partition->essence_container_offset == 0)
|
|
demux->current_partition->essence_container_offset =
|
|
demux->offset - demux->current_partition->partition.this_partition -
|
|
demux->run_in;
|
|
|
|
if (!demux->current_package) {
|
|
GST_ERROR_OBJECT (demux, "No package selected yet");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (demux->src->len == 0) {
|
|
GST_ERROR_OBJECT (demux, "No streams created yet");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (demux->essence_tracks->len == 0) {
|
|
GST_ERROR_OBJECT (demux, "No essence streams found in the metadata");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
track_number = GST_READ_UINT32_BE (&key->u[12]);
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *tmp =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
if (tmp->body_sid == demux->current_partition->partition.body_sid &&
|
|
(tmp->track_number == track_number || tmp->track_number == 0)) {
|
|
etrack = tmp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!etrack) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"No essence track for this essence element found");
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
if (etrack->position == -1) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Unknown essence track position, looking into index");
|
|
if (etrack->offsets) {
|
|
for (i = 0; i < etrack->offsets->len; i++) {
|
|
GstMXFDemuxIndex *idx =
|
|
&g_array_index (etrack->offsets, GstMXFDemuxIndex, i);
|
|
|
|
if (idx->offset != 0 && idx->offset == demux->offset - demux->run_in) {
|
|
etrack->position = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (etrack->position == -1) {
|
|
GST_WARNING_OBJECT (demux, "Essence track position not in index");
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
if (etrack->offsets && etrack->offsets->len > etrack->position) {
|
|
keyframe = g_array_index (etrack->offsets, GstMXFDemuxIndex,
|
|
etrack->position).keyframe;
|
|
}
|
|
|
|
/* Create subbuffer to be able to change metadata */
|
|
inbuf = gst_buffer_create_sub (buffer, 0, GST_BUFFER_SIZE (buffer));
|
|
|
|
if (!keyframe)
|
|
GST_BUFFER_FLAG_SET (inbuf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
|
|
if (etrack->handle_func) {
|
|
/* Takes ownership of inbuf */
|
|
ret =
|
|
etrack->handle_func (key, inbuf, etrack->caps,
|
|
etrack->source_track, etrack->mapping_data, &outbuf);
|
|
inbuf = NULL;
|
|
} else {
|
|
outbuf = inbuf;
|
|
inbuf = NULL;
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
if (ret != GST_FLOW_OK) {
|
|
GST_ERROR_OBJECT (demux, "Failed to handle essence element");
|
|
if (outbuf) {
|
|
gst_buffer_unref (outbuf);
|
|
outbuf = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (outbuf)
|
|
keyframe = !GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
|
|
if (!etrack->offsets)
|
|
etrack->offsets = g_array_new (FALSE, TRUE, sizeof (GstMXFDemuxIndex));
|
|
|
|
{
|
|
if (etrack->offsets->len > etrack->position) {
|
|
GstMXFDemuxIndex *index =
|
|
&g_array_index (etrack->offsets, GstMXFDemuxIndex, etrack->position);
|
|
|
|
index->offset = demux->offset - demux->run_in;
|
|
index->keyframe = keyframe;
|
|
} else {
|
|
GstMXFDemuxIndex index;
|
|
|
|
index.offset = demux->offset - demux->run_in;
|
|
index.keyframe = keyframe;
|
|
g_array_insert_val (etrack->offsets, etrack->position, index);
|
|
}
|
|
}
|
|
|
|
if (peek)
|
|
goto out;
|
|
|
|
if (!outbuf) {
|
|
GST_DEBUG_OBJECT (demux, "No output buffer created");
|
|
goto out;
|
|
}
|
|
|
|
inbuf = outbuf;
|
|
outbuf = NULL;
|
|
|
|
gst_buffer_set_caps (inbuf, etrack->caps);
|
|
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *pad = g_ptr_array_index (demux->src, i);
|
|
|
|
if (pad->current_essence_track != etrack)
|
|
continue;
|
|
|
|
if (pad->eos) {
|
|
GST_DEBUG_OBJECT (demux, "Pad is already EOS");
|
|
continue;
|
|
}
|
|
|
|
if (etrack->position != pad->current_essence_track_position) {
|
|
GST_DEBUG_OBJECT (demux, "Not at current component's position");
|
|
continue;
|
|
}
|
|
|
|
{
|
|
GstMXFDemuxPad *earliest = gst_mxf_demux_get_earliest_pad (demux);
|
|
|
|
if (earliest && earliest != pad && earliest->last_stop < pad->last_stop &&
|
|
pad->last_stop - earliest->last_stop > demux->max_drift) {
|
|
GST_DEBUG_OBJECT (demux, "Pad is too far ahead of time");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* Create another subbuffer to have writable metadata */
|
|
outbuf = gst_buffer_create_sub (inbuf, 0, GST_BUFFER_SIZE (inbuf));
|
|
|
|
GST_BUFFER_TIMESTAMP (outbuf) = pad->last_stop;
|
|
GST_BUFFER_DURATION (outbuf) =
|
|
gst_util_uint64_scale (GST_SECOND,
|
|
pad->current_essence_track->source_track->edit_rate.d,
|
|
pad->current_essence_track->source_track->edit_rate.n);
|
|
GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET_NONE;
|
|
GST_BUFFER_OFFSET_END (outbuf) = GST_BUFFER_OFFSET_NONE;
|
|
|
|
/* Update accumulated error and compensate */
|
|
{
|
|
guint64 abs_error =
|
|
(GST_SECOND * pad->current_essence_track->source_track->edit_rate.d) %
|
|
pad->current_essence_track->source_track->edit_rate.n;
|
|
pad->last_stop_accumulated_error +=
|
|
((gdouble) abs_error) /
|
|
((gdouble) pad->current_essence_track->source_track->edit_rate.n);
|
|
}
|
|
if (pad->last_stop_accumulated_error >= 1.0) {
|
|
GST_BUFFER_DURATION (outbuf) += 1;
|
|
pad->last_stop_accumulated_error -= 1.0;
|
|
}
|
|
|
|
if (pad->need_segment) {
|
|
GstEvent *e;
|
|
|
|
if (demux->close_seg_event)
|
|
gst_pad_push_event (GST_PAD_CAST (pad),
|
|
gst_event_ref (demux->close_seg_event));
|
|
|
|
e = gst_event_new_new_segment (FALSE, demux->segment.rate,
|
|
GST_FORMAT_TIME, demux->segment.start, demux->segment.stop,
|
|
GST_BUFFER_TIMESTAMP (outbuf));
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_pad_push_event (GST_PAD_CAST (pad), e);
|
|
pad->need_segment = FALSE;
|
|
}
|
|
|
|
if (pad->tags) {
|
|
gst_element_found_tags_for_pad (GST_ELEMENT_CAST (demux),
|
|
GST_PAD_CAST (pad), pad->tags);
|
|
pad->tags = NULL;
|
|
}
|
|
|
|
pad->last_stop += GST_BUFFER_DURATION (outbuf);
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Pushing buffer of size %u for track %u: timestamp %" GST_TIME_FORMAT
|
|
" duration %" GST_TIME_FORMAT, GST_BUFFER_SIZE (outbuf),
|
|
pad->material_track->parent.track_id,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)));
|
|
|
|
if (pad->discont) {
|
|
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
|
|
pad->discont = FALSE;
|
|
}
|
|
|
|
ret = gst_pad_push (GST_PAD_CAST (pad), outbuf);
|
|
outbuf = NULL;
|
|
ret = gst_mxf_demux_combine_flows (demux, pad, ret);
|
|
|
|
if (pad->last_stop > demux->segment.last_stop)
|
|
gst_segment_set_last_stop (&demux->segment, GST_FORMAT_TIME,
|
|
pad->last_stop);
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
goto out;
|
|
|
|
pad->current_essence_track_position++;
|
|
|
|
if (pad->current_component) {
|
|
if (pad->current_component_duration > 0 &&
|
|
pad->current_essence_track_position - pad->current_component_start
|
|
>= pad->current_component_duration) {
|
|
GST_DEBUG_OBJECT (demux, "Switching to next component");
|
|
|
|
ret =
|
|
gst_mxf_demux_pad_set_component (demux, pad,
|
|
pad->current_component_index + 1);
|
|
if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED) {
|
|
GST_ERROR_OBJECT (demux, "Switching component failed");
|
|
}
|
|
} else if (etrack->duration > 0
|
|
&& pad->current_essence_track_position >= etrack->duration) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Current component position after end of essence track");
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
}
|
|
} else if (etrack->duration > 0
|
|
&& pad->current_essence_track_position == etrack->duration) {
|
|
GST_DEBUG_OBJECT (demux, "At the end of the essence track");
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
}
|
|
|
|
if (ret == GST_FLOW_UNEXPECTED) {
|
|
GstEvent *e;
|
|
|
|
GST_DEBUG_OBJECT (demux, "EOS for track");
|
|
pad->eos = TRUE;
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_pad_push_event (GST_PAD_CAST (pad), e);
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (inbuf)
|
|
gst_buffer_unref (inbuf);
|
|
|
|
if (outbuf)
|
|
gst_buffer_unref (outbuf);
|
|
|
|
etrack->position++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_random_index_pack (GstMXFDemux * demux, const MXFUL * key,
|
|
GstBuffer * buffer)
|
|
{
|
|
guint i;
|
|
GList *l;
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Handling random index pack of size %u at offset %"
|
|
G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
|
|
|
|
if (demux->random_index_pack) {
|
|
GST_DEBUG_OBJECT (demux, "Already parsed random index pack");
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
if (!mxf_random_index_pack_parse (key, GST_BUFFER_DATA (buffer),
|
|
GST_BUFFER_SIZE (buffer), &demux->random_index_pack)) {
|
|
GST_ERROR_OBJECT (demux, "Parsing random index pack failed");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
for (i = 0; i < demux->random_index_pack->len; i++) {
|
|
GstMXFDemuxPartition *p = NULL;
|
|
MXFRandomIndexPackEntry *e =
|
|
&g_array_index (demux->random_index_pack, MXFRandomIndexPackEntry, i);
|
|
|
|
if (e->offset < demux->run_in) {
|
|
GST_ERROR_OBJECT (demux, "Invalid random index pack entry");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
for (l = demux->partitions; l; l = l->next) {
|
|
GstMXFDemuxPartition *tmp = l->data;
|
|
|
|
if (tmp->partition.this_partition + demux->run_in == e->offset) {
|
|
p = tmp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!p) {
|
|
p = g_new0 (GstMXFDemuxPartition, 1);
|
|
p->partition.this_partition = e->offset - demux->run_in;
|
|
p->partition.body_sid = e->body_sid;
|
|
demux->partitions =
|
|
g_list_insert_sorted (demux->partitions, p,
|
|
(GCompareFunc) gst_mxf_demux_partition_compare);
|
|
}
|
|
}
|
|
|
|
for (l = demux->partitions; l; l = l->next) {
|
|
GstMXFDemuxPartition *a, *b;
|
|
|
|
if (l->next == NULL)
|
|
break;
|
|
|
|
a = l->data;
|
|
b = l->next->data;
|
|
|
|
b->partition.prev_partition = a->partition.this_partition;
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_index_table_segment (GstMXFDemux * demux,
|
|
const MXFUL * key, GstBuffer * buffer)
|
|
{
|
|
MXFIndexTableSegment *segment;
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Handling index table segment of size %u at offset %"
|
|
G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
|
|
|
|
if (!demux->current_partition->primer.mappings) {
|
|
GST_WARNING_OBJECT (demux, "Invalid primer pack");
|
|
}
|
|
|
|
segment = g_new0 (MXFIndexTableSegment, 1);
|
|
|
|
if (!mxf_index_table_segment_parse (key, segment,
|
|
&demux->current_partition->primer, GST_BUFFER_DATA (buffer),
|
|
GST_BUFFER_SIZE (buffer))) {
|
|
|
|
GST_ERROR_OBJECT (demux, "Parsing index table segment failed");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
demux->pending_index_table_segments =
|
|
g_list_prepend (demux->pending_index_table_segments, segment);
|
|
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_pull_klv_packet (GstMXFDemux * demux, guint64 offset, MXFUL * key,
|
|
GstBuffer ** outbuf, guint * read)
|
|
{
|
|
GstBuffer *buffer = NULL;
|
|
const guint8 *data;
|
|
guint64 data_offset = 0;
|
|
guint64 length;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
memset (key, 0, sizeof (MXFUL));
|
|
|
|
/* Pull 16 byte key and first byte of BER encoded length */
|
|
if ((ret =
|
|
gst_mxf_demux_pull_range (demux, offset, 17, &buffer)) != GST_FLOW_OK)
|
|
goto beach;
|
|
|
|
data = GST_BUFFER_DATA (buffer);
|
|
|
|
memcpy (key, GST_BUFFER_DATA (buffer), 16);
|
|
|
|
/* Decode BER encoded packet length */
|
|
if ((data[16] & 0x80) == 0) {
|
|
length = data[16];
|
|
data_offset = 17;
|
|
} else {
|
|
guint slen = data[16] & 0x7f;
|
|
|
|
data_offset = 16 + 1 + slen;
|
|
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
|
|
/* Must be at most 8 according to SMPTE-379M 5.3.4 */
|
|
if (slen > 8) {
|
|
GST_ERROR_OBJECT (demux, "Invalid KLV packet length: %u", slen);
|
|
ret = GST_FLOW_ERROR;
|
|
goto beach;
|
|
}
|
|
|
|
/* Now pull the length of the packet */
|
|
if ((ret = gst_mxf_demux_pull_range (demux, offset + 17, slen,
|
|
&buffer)) != GST_FLOW_OK)
|
|
goto beach;
|
|
data = GST_BUFFER_DATA (buffer);
|
|
|
|
length = 0;
|
|
while (slen) {
|
|
length = (length << 8) | *data;
|
|
data++;
|
|
slen--;
|
|
}
|
|
}
|
|
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
|
|
/* GStreamer's buffer sizes are stored in a guint so we
|
|
* limit ourself to G_MAXUINT large buffers */
|
|
if (length > G_MAXUINT) {
|
|
GST_ERROR_OBJECT (demux,
|
|
"Unsupported KLV packet length: %" G_GUINT64_FORMAT, length);
|
|
ret = GST_FLOW_ERROR;
|
|
goto beach;
|
|
}
|
|
|
|
/* Pull the complete KLV packet */
|
|
if ((ret = gst_mxf_demux_pull_range (demux, offset + data_offset, length,
|
|
&buffer)) != GST_FLOW_OK)
|
|
goto beach;
|
|
|
|
*outbuf = buffer;
|
|
buffer = NULL;
|
|
if (read)
|
|
*read = data_offset + length;
|
|
|
|
beach:
|
|
if (buffer)
|
|
gst_buffer_unref (buffer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_pull_random_index_pack (GstMXFDemux * demux)
|
|
{
|
|
GstBuffer *buffer;
|
|
GstFlowReturn ret;
|
|
gint64 filesize = -1;
|
|
GstFormat fmt = GST_FORMAT_BYTES;
|
|
guint32 pack_size;
|
|
guint64 old_offset = demux->offset;
|
|
MXFUL key;
|
|
|
|
if (!gst_pad_query_peer_duration (demux->sinkpad, &fmt, &filesize) ||
|
|
fmt != GST_FORMAT_BYTES || filesize == -1) {
|
|
GST_DEBUG_OBJECT (demux, "Can't query upstream size");
|
|
return;
|
|
}
|
|
|
|
g_assert (filesize > 4);
|
|
|
|
buffer = NULL;
|
|
if ((ret =
|
|
gst_mxf_demux_pull_range (demux, filesize - 4, 4,
|
|
&buffer)) != GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (demux, "Failed pulling last 4 bytes");
|
|
return;
|
|
}
|
|
|
|
pack_size = GST_READ_UINT32_BE (GST_BUFFER_DATA (buffer));
|
|
|
|
gst_buffer_unref (buffer);
|
|
|
|
if (pack_size < 20) {
|
|
GST_DEBUG_OBJECT (demux, "Too small pack size (%u bytes)", pack_size);
|
|
return;
|
|
} else if (pack_size > filesize - 20) {
|
|
GST_DEBUG_OBJECT (demux, "Too large pack size (%u bytes)", pack_size);
|
|
return;
|
|
}
|
|
|
|
buffer = NULL;
|
|
if ((ret =
|
|
gst_mxf_demux_pull_range (demux, filesize - pack_size, 16,
|
|
&buffer)) != GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (demux, "Failed pulling random index pack key");
|
|
return;
|
|
}
|
|
|
|
memcpy (&key, GST_BUFFER_DATA (buffer), 16);
|
|
gst_buffer_unref (buffer);
|
|
|
|
if (!mxf_is_random_index_pack (&key)) {
|
|
GST_DEBUG_OBJECT (demux, "No random index pack");
|
|
return;
|
|
}
|
|
|
|
demux->offset = filesize - pack_size;
|
|
if ((ret =
|
|
gst_mxf_demux_pull_klv_packet (demux, filesize - pack_size, &key,
|
|
&buffer, NULL)) != GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (demux, "Failed pulling random index pack");
|
|
return;
|
|
}
|
|
|
|
gst_mxf_demux_handle_random_index_pack (demux, &key, buffer);
|
|
gst_buffer_unref (buffer);
|
|
demux->offset = old_offset;
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_parse_footer_metadata (GstMXFDemux * demux)
|
|
{
|
|
guint64 old_offset = demux->offset;
|
|
MXFUL key;
|
|
GstBuffer *buffer = NULL;
|
|
guint read = 0;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstMXFDemuxPartition *old_partition = demux->current_partition;
|
|
|
|
demux->current_partition = NULL;
|
|
|
|
gst_mxf_demux_reset_metadata (demux);
|
|
|
|
if (demux->footer_partition_pack_offset != 0) {
|
|
demux->offset = demux->run_in + demux->footer_partition_pack_offset;
|
|
} else {
|
|
MXFRandomIndexPackEntry *entry =
|
|
&g_array_index (demux->random_index_pack, MXFRandomIndexPackEntry,
|
|
demux->random_index_pack->len - 1);
|
|
demux->offset = entry->offset;
|
|
}
|
|
|
|
next_try:
|
|
ret =
|
|
gst_mxf_demux_pull_klv_packet (demux, demux->offset, &key, &buffer,
|
|
&read);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto out;
|
|
|
|
if (!mxf_is_partition_pack (&key))
|
|
goto out;
|
|
|
|
if (gst_mxf_demux_handle_partition_pack (demux, &key, buffer) != GST_FLOW_OK)
|
|
goto out;
|
|
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
|
|
if (demux->current_partition->partition.header_byte_count == 0) {
|
|
if (demux->current_partition->partition.prev_partition == 0
|
|
|| demux->current_partition->partition.this_partition == 0)
|
|
goto out;
|
|
|
|
demux->offset =
|
|
demux->run_in + demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
|
|
while (TRUE) {
|
|
ret =
|
|
gst_mxf_demux_pull_klv_packet (demux, demux->offset, &key, &buffer,
|
|
&read);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
demux->offset =
|
|
demux->run_in +
|
|
demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
|
|
if (mxf_is_fill (&key)) {
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
} else if (mxf_is_primer_pack (&key)) {
|
|
if (!demux->current_partition->primer.mappings) {
|
|
if (gst_mxf_demux_handle_primer_pack (demux, &key,
|
|
buffer) != GST_FLOW_OK) {
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
demux->offset =
|
|
demux->run_in +
|
|
demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
}
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
break;
|
|
} else {
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
demux->offset =
|
|
demux->run_in +
|
|
demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
}
|
|
|
|
/* parse metadata */
|
|
while (demux->offset <
|
|
demux->run_in + demux->current_partition->primer.offset +
|
|
demux->current_partition->partition.header_byte_count) {
|
|
ret =
|
|
gst_mxf_demux_pull_klv_packet (demux, demux->offset, &key, &buffer,
|
|
&read);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
demux->offset =
|
|
demux->run_in +
|
|
demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
|
|
if (mxf_is_metadata (&key)) {
|
|
ret = gst_mxf_demux_handle_metadata (demux, &key, buffer);
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
gst_mxf_demux_reset_metadata (demux);
|
|
demux->offset =
|
|
demux->run_in +
|
|
demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
} else if (mxf_is_descriptive_metadata (&key)) {
|
|
ret = gst_mxf_demux_handle_descriptive_metadata (demux, &key, buffer);
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
} else if (mxf_is_fill (&key)) {
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
} else if (mxf_is_generic_container_system_item (&key) ||
|
|
mxf_is_generic_container_essence_element (&key) ||
|
|
mxf_is_avid_essence_container_essence_element (&key)) {
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
break;
|
|
} else {
|
|
demux->offset += read;
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
}
|
|
}
|
|
|
|
/* resolve references etc */
|
|
|
|
if (gst_mxf_demux_resolve_references (demux) !=
|
|
GST_FLOW_OK || gst_mxf_demux_update_tracks (demux) != GST_FLOW_OK) {
|
|
demux->current_partition->parsed_metadata = TRUE;
|
|
demux->offset =
|
|
demux->run_in + demux->current_partition->partition.this_partition -
|
|
demux->current_partition->partition.prev_partition;
|
|
goto next_try;
|
|
}
|
|
|
|
out:
|
|
if (buffer)
|
|
gst_buffer_unref (buffer);
|
|
|
|
demux->offset = old_offset;
|
|
demux->current_partition = old_partition;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_handle_klv_packet (GstMXFDemux * demux, const MXFUL * key,
|
|
GstBuffer * buffer, gboolean peek)
|
|
{
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
gchar key_str[48];
|
|
#endif
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
if (demux->update_metadata
|
|
&& demux->preface
|
|
&& (demux->offset >=
|
|
demux->run_in + demux->current_partition->primer.offset +
|
|
demux->current_partition->partition.header_byte_count ||
|
|
mxf_is_generic_container_system_item (key) ||
|
|
mxf_is_generic_container_essence_element (key) ||
|
|
mxf_is_avid_essence_container_essence_element (key))) {
|
|
demux->current_partition->parsed_metadata = TRUE;
|
|
if ((ret = gst_mxf_demux_resolve_references (demux)) != GST_FLOW_OK ||
|
|
(ret = gst_mxf_demux_update_tracks (demux)) != GST_FLOW_OK) {
|
|
goto beach;
|
|
}
|
|
} else if (demux->metadata_resolved && demux->requested_package_string) {
|
|
if ((ret = gst_mxf_demux_update_tracks (demux)) != GST_FLOW_OK) {
|
|
goto beach;
|
|
}
|
|
}
|
|
|
|
if (!mxf_is_mxf_packet (key)) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Skipping non-MXF packet of size %u at offset %"
|
|
G_GUINT64_FORMAT ", key: %s", GST_BUFFER_SIZE (buffer), demux->offset,
|
|
mxf_ul_to_string (key, key_str));
|
|
} else if (mxf_is_partition_pack (key)) {
|
|
ret = gst_mxf_demux_handle_partition_pack (demux, key, buffer);
|
|
|
|
/* If this partition contains the start of an essence container
|
|
* set the positions of all essence streams to 0
|
|
*/
|
|
if (ret == GST_FLOW_OK && demux->current_partition
|
|
&& demux->current_partition->partition.body_sid != 0
|
|
&& demux->current_partition->partition.body_offset == 0) {
|
|
guint i;
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *etrack =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
if (etrack->body_sid != demux->current_partition->partition.body_sid)
|
|
continue;
|
|
|
|
etrack->position = 0;
|
|
}
|
|
}
|
|
} else if (mxf_is_primer_pack (key)) {
|
|
ret = gst_mxf_demux_handle_primer_pack (demux, key, buffer);
|
|
} else if (mxf_is_metadata (key)) {
|
|
ret = gst_mxf_demux_handle_metadata (demux, key, buffer);
|
|
} else if (mxf_is_descriptive_metadata (key)) {
|
|
ret = gst_mxf_demux_handle_descriptive_metadata (demux, key, buffer);
|
|
} else if (mxf_is_generic_container_system_item (key)) {
|
|
ret =
|
|
gst_mxf_demux_handle_generic_container_system_item (demux, key, buffer);
|
|
} else if (mxf_is_generic_container_essence_element (key) ||
|
|
mxf_is_avid_essence_container_essence_element (key)) {
|
|
ret =
|
|
gst_mxf_demux_handle_generic_container_essence_element (demux, key,
|
|
buffer, peek);
|
|
} else if (mxf_is_random_index_pack (key)) {
|
|
ret = gst_mxf_demux_handle_random_index_pack (demux, key, buffer);
|
|
} else if (mxf_is_index_table_segment (key)) {
|
|
ret = gst_mxf_demux_handle_index_table_segment (demux, key, buffer);
|
|
} else if (mxf_is_fill (key)) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Skipping filler packet of size %u at offset %"
|
|
G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
|
|
} else {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Skipping unknown packet of size %u at offset %"
|
|
G_GUINT64_FORMAT ", key: %s", GST_BUFFER_SIZE (buffer), demux->offset,
|
|
mxf_ul_to_string (key, key_str));
|
|
}
|
|
|
|
/* In pull mode try to get the last metadata */
|
|
if (mxf_is_partition_pack (key) && ret == GST_FLOW_OK
|
|
&& demux->pull_footer_metadata
|
|
&& demux->random_access && demux->current_partition
|
|
&& demux->current_partition->partition.type == MXF_PARTITION_PACK_HEADER
|
|
&& (!demux->current_partition->partition.closed
|
|
|| !demux->current_partition->partition.complete)
|
|
&& (demux->footer_partition_pack_offset != 0 || demux->random_index_pack)) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Open or incomplete header partition, trying to get final metadata from the last partitions");
|
|
gst_mxf_demux_parse_footer_metadata (demux);
|
|
demux->pull_footer_metadata = FALSE;
|
|
|
|
if (demux->current_partition->partition.body_sid != 0 &&
|
|
demux->current_partition->partition.body_offset == 0) {
|
|
guint i;
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *etrack =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
if (etrack->body_sid != demux->current_partition->partition.body_sid)
|
|
continue;
|
|
|
|
etrack->position = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
beach:
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_set_partition_for_offset (GstMXFDemux * demux, guint64 offset)
|
|
{
|
|
GList *l;
|
|
|
|
/* This partition will already be parsed, otherwise
|
|
* the position wouldn't be in the index */
|
|
for (l = demux->partitions; l; l = l->next) {
|
|
GstMXFDemuxPartition *p = l->data;
|
|
|
|
if (p->partition.this_partition + demux->run_in <= offset)
|
|
demux->current_partition = p;
|
|
}
|
|
}
|
|
|
|
static guint64
|
|
gst_mxf_demux_find_essence_element (GstMXFDemux * demux,
|
|
GstMXFDemuxEssenceTrack * etrack, gint64 * position, gboolean keyframe)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint64 old_offset = demux->offset;
|
|
GstMXFDemuxPartition *old_partition = demux->current_partition;
|
|
gint i;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Trying to find essence element %" G_GINT64_FORMAT
|
|
" of track %u with body_sid %u (keyframe %d)", *position,
|
|
etrack->track_number, etrack->body_sid, keyframe);
|
|
|
|
from_index:
|
|
|
|
if (etrack->duration > 0 && *position >= etrack->duration) {
|
|
GST_WARNING_OBJECT (demux, "Position after end of essence track");
|
|
return -1;
|
|
}
|
|
|
|
/* First try to find an offset in our index */
|
|
if (etrack->offsets && etrack->offsets->len > *position) {
|
|
GstMXFDemuxIndex *idx =
|
|
&g_array_index (etrack->offsets, GstMXFDemuxIndex, *position);
|
|
guint64 current_offset = -1;
|
|
gint64 current_position = *position;
|
|
|
|
if (idx->offset != 0 && (!keyframe || idx->keyframe)) {
|
|
current_offset = idx->offset;
|
|
} else if (idx->offset != 0) {
|
|
current_position--;
|
|
while (current_position >= 0) {
|
|
idx =
|
|
&g_array_index (etrack->offsets, GstMXFDemuxIndex,
|
|
current_position);
|
|
if (idx->offset == 0) {
|
|
break;
|
|
} else if (!idx->keyframe) {
|
|
current_position--;
|
|
continue;
|
|
} else {
|
|
current_offset = idx->offset;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (current_offset != -1) {
|
|
GST_DEBUG_OBJECT (demux, "Found in index at offset %" G_GUINT64_FORMAT,
|
|
current_offset);
|
|
*position = current_position;
|
|
return current_offset;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Not found in index");
|
|
if (!demux->random_access) {
|
|
guint64 new_offset = -1;
|
|
gint64 new_position = -1;
|
|
|
|
if (etrack->offsets && etrack->offsets->len) {
|
|
for (i = etrack->offsets->len - 1; i >= 0; i--) {
|
|
GstMXFDemuxIndex *idx =
|
|
&g_array_index (etrack->offsets, GstMXFDemuxIndex, i);
|
|
|
|
if (idx->offset != 0 && i <= *position && (!keyframe || idx->keyframe)) {
|
|
new_offset = idx->offset;
|
|
new_position = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (new_offset != -1) {
|
|
*position = new_position;
|
|
return new_offset;
|
|
}
|
|
} else if (demux->random_access) {
|
|
demux->offset = demux->run_in;
|
|
if (etrack->offsets && etrack->offsets->len) {
|
|
for (i = etrack->offsets->len - 1; i >= 0; i--) {
|
|
GstMXFDemuxIndex *idx =
|
|
&g_array_index (etrack->offsets, GstMXFDemuxIndex, i);
|
|
|
|
if (idx->offset != 0 && i <= *position) {
|
|
demux->offset = idx->offset + demux->run_in;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
t->position = (demux->offset == demux->run_in) ? 0 : -1;
|
|
}
|
|
|
|
/* Else peek at all essence elements and complete our
|
|
* index until we find the requested element
|
|
*/
|
|
while (ret == GST_FLOW_OK) {
|
|
GstBuffer *buffer = NULL;
|
|
MXFUL key;
|
|
guint read = 0;
|
|
|
|
ret =
|
|
gst_mxf_demux_pull_klv_packet (demux, demux->offset, &key, &buffer,
|
|
&read);
|
|
|
|
if (ret == GST_FLOW_UNEXPECTED) {
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
|
|
i);
|
|
|
|
if (t->position > 0)
|
|
t->duration = t->position;
|
|
}
|
|
/* For the searched track this is really our position */
|
|
etrack->duration = etrack->position;
|
|
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
|
|
if (!p->eos
|
|
&& p->current_essence_track_position >=
|
|
p->current_essence_track->duration) {
|
|
GstEvent *e;
|
|
|
|
p->eos = TRUE;
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_pad_push_event (GST_PAD_CAST (p), e);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK) && etrack->position <= *position) {
|
|
demux->offset = old_offset;
|
|
demux->current_partition = old_partition;
|
|
break;
|
|
} else if (G_UNLIKELY (ret == GST_FLOW_OK)) {
|
|
ret = gst_mxf_demux_handle_klv_packet (demux, &key, buffer, TRUE);
|
|
gst_buffer_unref (buffer);
|
|
}
|
|
|
|
/* If we found the position read it from the index again */
|
|
if (((ret == GST_FLOW_OK && etrack->position == *position + 2) ||
|
|
(ret == GST_FLOW_UNEXPECTED && etrack->position == *position + 1))
|
|
&& etrack->offsets && etrack->offsets->len > *position
|
|
&& g_array_index (etrack->offsets, GstMXFDemuxIndex,
|
|
*position).offset != 0) {
|
|
GST_DEBUG_OBJECT (demux, "Found at offset %" G_GUINT64_FORMAT,
|
|
demux->offset);
|
|
demux->offset = old_offset;
|
|
demux->current_partition = old_partition;
|
|
goto from_index;
|
|
}
|
|
demux->offset += read;
|
|
}
|
|
demux->offset = old_offset;
|
|
demux->current_partition = old_partition;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Not found in this file");
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_pull_and_handle_klv_packet (GstMXFDemux * demux)
|
|
{
|
|
GstBuffer *buffer = NULL;
|
|
MXFUL key;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint read = 0;
|
|
|
|
if (demux->src->len > 0) {
|
|
if (!gst_mxf_demux_get_earliest_pad (demux)) {
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
GST_DEBUG_OBJECT (demux, "All tracks are EOS");
|
|
goto beach;
|
|
}
|
|
}
|
|
|
|
ret =
|
|
gst_mxf_demux_pull_klv_packet (demux, demux->offset, &key, &buffer,
|
|
&read);
|
|
|
|
if (ret == GST_FLOW_UNEXPECTED && demux->src->len > 0) {
|
|
guint i;
|
|
GstMXFDemuxPad *p = NULL;
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
if (t->position > 0)
|
|
t->duration = t->position;
|
|
}
|
|
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
|
|
if (!p->eos
|
|
&& p->current_essence_track_position >=
|
|
p->current_essence_track->duration) {
|
|
GstEvent *e;
|
|
|
|
p->eos = TRUE;
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_pad_push_event (GST_PAD_CAST (p), e);
|
|
}
|
|
}
|
|
|
|
while ((p = gst_mxf_demux_get_earliest_pad (demux))) {
|
|
guint64 offset;
|
|
gint64 position;
|
|
|
|
position = p->current_essence_track_position;
|
|
|
|
offset =
|
|
gst_mxf_demux_find_essence_element (demux, p->current_essence_track,
|
|
&position, FALSE);
|
|
if (offset == -1) {
|
|
GstEvent *e;
|
|
|
|
GST_ERROR_OBJECT (demux, "Failed to find offset for essence track");
|
|
p->eos = TRUE;
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_pad_push_event (GST_PAD_CAST (p), e);
|
|
continue;
|
|
}
|
|
|
|
demux->offset = offset + demux->run_in;
|
|
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
|
|
|
|
p->current_essence_track->position = position;
|
|
|
|
ret = GST_FLOW_OK;
|
|
goto beach;
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto beach;
|
|
|
|
ret = gst_mxf_demux_handle_klv_packet (demux, &key, buffer, FALSE);
|
|
demux->offset += read;
|
|
|
|
if (ret == GST_FLOW_OK && demux->src->len > 0
|
|
&& demux->essence_tracks->len > 0) {
|
|
GstMXFDemuxPad *earliest = NULL;
|
|
/* We allow time drifts of at most 500ms */
|
|
while ((earliest = gst_mxf_demux_get_earliest_pad (demux)) &&
|
|
demux->segment.last_stop - earliest->last_stop > demux->max_drift) {
|
|
guint64 offset;
|
|
gint64 position;
|
|
|
|
GST_WARNING_OBJECT (demux,
|
|
"Found synchronization issue -- trying to solve");
|
|
|
|
position = earliest->current_essence_track_position;
|
|
|
|
/* FIXME: This can probably be improved by using the
|
|
* offset of position-1 if it's in the same partition
|
|
* or the start of the position otherwise.
|
|
* This way we won't skip elements from the same essence
|
|
* container as etrack->position
|
|
*/
|
|
offset =
|
|
gst_mxf_demux_find_essence_element (demux,
|
|
earliest->current_essence_track, &position, FALSE);
|
|
if (offset == -1) {
|
|
GstEvent *e;
|
|
|
|
GST_WARNING_OBJECT (demux,
|
|
"Failed to find offset for late essence track");
|
|
earliest->eos = TRUE;
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_pad_push_event (GST_PAD_CAST (earliest), e);
|
|
continue;
|
|
}
|
|
|
|
demux->offset = offset + demux->run_in;
|
|
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
|
|
|
|
earliest->current_essence_track->position = position;
|
|
break;
|
|
}
|
|
}
|
|
|
|
beach:
|
|
if (buffer)
|
|
gst_buffer_unref (buffer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_loop (GstPad * pad)
|
|
{
|
|
GstMXFDemux *demux = NULL;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
demux = GST_MXF_DEMUX (gst_pad_get_parent (pad));
|
|
|
|
if (demux->run_in == -1) {
|
|
/* Skip run-in, which is at most 64K and is finished
|
|
* by a header partition pack */
|
|
while (demux->offset < 64 * 1024) {
|
|
GstBuffer *buffer = NULL;
|
|
|
|
if ((ret =
|
|
gst_mxf_demux_pull_range (demux, demux->offset, 16,
|
|
&buffer)) != GST_FLOW_OK)
|
|
break;
|
|
|
|
if (mxf_is_header_partition_pack ((const MXFUL *)
|
|
GST_BUFFER_DATA (buffer))) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Found header partition pack at offset %" G_GUINT64_FORMAT,
|
|
demux->offset);
|
|
demux->run_in = demux->offset;
|
|
gst_buffer_unref (buffer);
|
|
break;
|
|
}
|
|
|
|
demux->offset++;
|
|
gst_buffer_unref (buffer);
|
|
}
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto pause;
|
|
|
|
if (G_UNLIKELY (demux->run_in == -1)) {
|
|
GST_ERROR_OBJECT (demux, "No valid header partition pack found");
|
|
ret = GST_FLOW_ERROR;
|
|
goto pause;
|
|
}
|
|
|
|
/* First of all pull&parse the random index pack at EOF */
|
|
gst_mxf_demux_pull_random_index_pack (demux);
|
|
}
|
|
|
|
/* Now actually do something */
|
|
ret = gst_mxf_demux_pull_and_handle_klv_packet (demux);
|
|
|
|
/* pause if something went wrong */
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto pause;
|
|
|
|
/* check EOS condition */
|
|
if ((demux->segment.flags & GST_SEEK_FLAG_SEGMENT) &&
|
|
(demux->segment.stop != -1) &&
|
|
(demux->segment.last_stop >= demux->segment.stop)) {
|
|
guint i;
|
|
gboolean eos = TRUE;
|
|
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
|
|
if (!p->eos && p->last_stop < demux->segment.stop) {
|
|
eos = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (eos) {
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
goto pause;
|
|
}
|
|
}
|
|
|
|
gst_object_unref (demux);
|
|
|
|
return;
|
|
|
|
pause:
|
|
{
|
|
const gchar *reason = gst_flow_get_name (ret);
|
|
|
|
GST_LOG_OBJECT (demux, "pausing task, reason %s", reason);
|
|
gst_pad_pause_task (pad);
|
|
|
|
if (ret == GST_FLOW_UNEXPECTED) {
|
|
/* perform EOS logic */
|
|
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
gint64 stop;
|
|
GstMessage *m;
|
|
GstEvent *e;
|
|
|
|
/* for segment playback we need to post when (in stream time)
|
|
* we stopped, this is either stop (when set) or the duration. */
|
|
if ((stop = demux->segment.stop) == -1)
|
|
stop = demux->segment.duration;
|
|
|
|
GST_LOG_OBJECT (demux, "Sending segment done, at end of segment");
|
|
m = gst_message_new_segment_done (GST_OBJECT_CAST (demux),
|
|
GST_FORMAT_TIME, stop);
|
|
gst_message_set_seqnum (m, demux->seqnum);
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux), m);
|
|
e = gst_event_new_segment_done (GST_FORMAT_TIME, stop);
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_mxf_demux_push_src_event (demux, e);
|
|
} else {
|
|
GstEvent *e;
|
|
|
|
/* normal playback, send EOS to all linked pads */
|
|
GST_LOG_OBJECT (demux, "Sending EOS, at end of stream");
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
if (!gst_mxf_demux_push_src_event (demux, e)) {
|
|
GST_WARNING_OBJECT (demux, "failed pushing EOS on streams");
|
|
}
|
|
}
|
|
} else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
|
|
GstEvent *e;
|
|
|
|
GST_ELEMENT_ERROR (demux, STREAM, FAILED,
|
|
("Internal data stream error."),
|
|
("stream stopped, reason %s", reason));
|
|
e = gst_event_new_eos ();
|
|
gst_event_set_seqnum (e, demux->seqnum);
|
|
gst_mxf_demux_push_src_event (demux, e);
|
|
}
|
|
gst_object_unref (demux);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mxf_demux_chain (GstPad * pad, GstBuffer * inbuf)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstMXFDemux *demux = NULL;
|
|
MXFUL key;
|
|
const guint8 *data = NULL;
|
|
guint64 length = 0;
|
|
guint64 offset = 0;
|
|
GstBuffer *buffer = NULL;
|
|
|
|
demux = GST_MXF_DEMUX (gst_pad_get_parent (pad));
|
|
|
|
GST_LOG_OBJECT (demux, "received buffer of %u bytes at offset %"
|
|
G_GUINT64_FORMAT, GST_BUFFER_SIZE (inbuf), GST_BUFFER_OFFSET (inbuf));
|
|
|
|
if (demux->src->len > 0) {
|
|
if (!gst_mxf_demux_get_earliest_pad (demux)) {
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
GST_DEBUG_OBJECT (demux, "All tracks are EOS");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (GST_BUFFER_OFFSET (inbuf) == 0)) {
|
|
GST_DEBUG_OBJECT (demux, "beginning of file, expect header");
|
|
demux->run_in = -1;
|
|
demux->offset = 0;
|
|
}
|
|
|
|
if (G_UNLIKELY (demux->offset == 0 && GST_BUFFER_OFFSET (inbuf) != 0)) {
|
|
GST_DEBUG_OBJECT (demux, "offset was zero, synchronizing with buffer's");
|
|
if (GST_BUFFER_OFFSET_IS_VALID (inbuf))
|
|
demux->offset = GST_BUFFER_OFFSET (inbuf);
|
|
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
|
|
} else if (demux->current_partition == NULL) {
|
|
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
|
|
}
|
|
|
|
gst_adapter_push (demux->adapter, inbuf);
|
|
inbuf = NULL;
|
|
|
|
while (ret == GST_FLOW_OK) {
|
|
if (G_UNLIKELY (demux->flushing)) {
|
|
GST_DEBUG_OBJECT (demux, "we are now flushing, exiting parser loop");
|
|
ret = GST_FLOW_FLUSHING;
|
|
break;
|
|
}
|
|
|
|
if (gst_adapter_available (demux->adapter) < 16)
|
|
break;
|
|
|
|
if (demux->run_in == -1) {
|
|
/* Skip run-in, which is at most 64K and is finished
|
|
* by a header partition pack */
|
|
|
|
while (demux->offset < 64 * 1024
|
|
&& gst_adapter_available (demux->adapter) >= 16) {
|
|
data = gst_adapter_peek (demux->adapter, 16);
|
|
|
|
if (mxf_is_header_partition_pack ((const MXFUL *)
|
|
data)) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Found header partition pack at offset %" G_GUINT64_FORMAT,
|
|
demux->offset);
|
|
demux->run_in = demux->offset;
|
|
break;
|
|
}
|
|
gst_adapter_flush (demux->adapter, 1);
|
|
demux->offset++;
|
|
}
|
|
} else if (demux->offset < demux->run_in) {
|
|
guint64 flush = MIN (gst_adapter_available (demux->adapter),
|
|
demux->run_in - demux->offset);
|
|
gst_adapter_flush (demux->adapter, flush);
|
|
demux->offset += flush;
|
|
continue;
|
|
}
|
|
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
break;
|
|
|
|
/* Need more data */
|
|
if (demux->run_in == -1 && demux->offset < 64 * 1024)
|
|
break;
|
|
|
|
if (G_UNLIKELY (demux->run_in == -1)) {
|
|
GST_ERROR_OBJECT (demux, "No valid header partition pack found");
|
|
ret = GST_FLOW_ERROR;
|
|
break;
|
|
}
|
|
|
|
if (gst_adapter_available (demux->adapter) < 17)
|
|
break;
|
|
|
|
/* Now actually do something */
|
|
memset (&key, 0, sizeof (MXFUL));
|
|
|
|
/* Pull 16 byte key and first byte of BER encoded length */
|
|
data = gst_adapter_peek (demux->adapter, 17);
|
|
|
|
memcpy (&key, data, 16);
|
|
|
|
/* Decode BER encoded packet length */
|
|
if ((data[16] & 0x80) == 0) {
|
|
length = data[16];
|
|
offset = 17;
|
|
} else {
|
|
guint slen = data[16] & 0x7f;
|
|
|
|
offset = 16 + 1 + slen;
|
|
|
|
/* Must be at most 8 according to SMPTE-379M 5.3.4 and
|
|
* GStreamer buffers can only have a 4 bytes length */
|
|
if (slen > 8) {
|
|
GST_ERROR_OBJECT (demux, "Invalid KLV packet length: %u", slen);
|
|
ret = GST_FLOW_ERROR;
|
|
break;
|
|
}
|
|
|
|
if (gst_adapter_available (demux->adapter) < 17 + slen)
|
|
break;
|
|
|
|
data = gst_adapter_peek (demux->adapter, 17 + slen);
|
|
data += 17;
|
|
|
|
length = 0;
|
|
while (slen) {
|
|
length = (length << 8) | *data;
|
|
data++;
|
|
slen--;
|
|
}
|
|
}
|
|
|
|
/* GStreamer's buffer sizes are stored in a guint so we
|
|
* limit ourself to G_MAXUINT large buffers */
|
|
if (length > G_MAXUINT) {
|
|
GST_ERROR_OBJECT (demux,
|
|
"Unsupported KLV packet length: %" G_GUINT64_FORMAT, length);
|
|
ret = GST_FLOW_ERROR;
|
|
break;
|
|
}
|
|
|
|
if (gst_adapter_available (demux->adapter) < offset + length)
|
|
break;
|
|
|
|
gst_adapter_flush (demux->adapter, offset);
|
|
|
|
if (length > 0) {
|
|
buffer = gst_adapter_take_buffer (demux->adapter, length);
|
|
|
|
ret = gst_mxf_demux_handle_klv_packet (demux, &key, buffer, FALSE);
|
|
gst_buffer_unref (buffer);
|
|
}
|
|
|
|
demux->offset += offset + length;
|
|
}
|
|
|
|
gst_object_unref (demux);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_pad_set_last_stop (GstMXFDemux * demux, GstMXFDemuxPad * p,
|
|
GstClockTime start)
|
|
{
|
|
guint i;
|
|
GstClockTime sum = 0;
|
|
MXFMetadataSourceClip *clip = NULL;
|
|
|
|
if (!p->current_component) {
|
|
p->current_essence_track_position =
|
|
gst_util_uint64_scale (start, p->material_track->edit_rate.n,
|
|
p->material_track->edit_rate.d * GST_SECOND);
|
|
|
|
if (p->current_essence_track_position >= p->current_essence_track->duration
|
|
&& p->current_essence_track->duration > 0) {
|
|
p->current_essence_track_position = p->current_essence_track->duration;
|
|
p->last_stop =
|
|
gst_util_uint64_scale (p->current_essence_track->duration,
|
|
p->material_track->edit_rate.d * GST_SECOND,
|
|
p->material_track->edit_rate.n);
|
|
} else {
|
|
p->last_stop = start;
|
|
}
|
|
p->last_stop_accumulated_error = 0.0;
|
|
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < p->material_track->parent.sequence->n_structural_components;
|
|
i++) {
|
|
clip =
|
|
MXF_METADATA_SOURCE_CLIP (p->material_track->parent.sequence->
|
|
structural_components[i]);
|
|
|
|
if (clip->parent.duration <= 0)
|
|
break;
|
|
|
|
sum +=
|
|
gst_util_uint64_scale (clip->parent.duration,
|
|
p->material_track->edit_rate.d * GST_SECOND,
|
|
p->material_track->edit_rate.n);
|
|
|
|
if (sum > start)
|
|
break;
|
|
}
|
|
|
|
if (i == p->material_track->parent.sequence->n_structural_components) {
|
|
p->last_stop = sum;
|
|
p->last_stop_accumulated_error = 0.0;
|
|
|
|
gst_mxf_demux_pad_set_component (demux, p, i);
|
|
return;
|
|
}
|
|
|
|
if (clip->parent.duration > 0)
|
|
sum -=
|
|
gst_util_uint64_scale (clip->parent.duration,
|
|
p->material_track->edit_rate.d * GST_SECOND,
|
|
p->material_track->edit_rate.n);
|
|
|
|
start -= sum;
|
|
|
|
gst_mxf_demux_pad_set_component (demux, p, i);
|
|
|
|
{
|
|
gint64 essence_offset = gst_util_uint64_scale (start,
|
|
p->current_essence_track->source_track->edit_rate.n,
|
|
p->current_essence_track->source_track->edit_rate.d * GST_SECOND);
|
|
|
|
p->current_essence_track_position += essence_offset;
|
|
|
|
p->last_stop = sum + gst_util_uint64_scale (essence_offset,
|
|
GST_SECOND * p->material_track->edit_rate.d,
|
|
p->material_track->edit_rate.n);
|
|
p->last_stop_accumulated_error = 0.0;
|
|
}
|
|
|
|
if (p->current_essence_track_position >= p->current_essence_track->duration
|
|
&& p->current_essence_track->duration > 0) {
|
|
p->current_essence_track_position = p->current_essence_track->duration;
|
|
p->last_stop =
|
|
sum + gst_util_uint64_scale (p->current_component->parent.duration,
|
|
p->material_track->edit_rate.d * GST_SECOND,
|
|
p->material_track->edit_rate.n);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_seek_push (GstMXFDemux * demux, GstEvent * event)
|
|
{
|
|
GstFormat format;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
gdouble rate;
|
|
gboolean update, flush, keyframe;
|
|
GstSegment seeksegment;
|
|
guint i;
|
|
guint32 seqnum;
|
|
|
|
gst_event_parse_seek (event, &rate, &format, &flags,
|
|
&start_type, &start, &stop_type, &stop);
|
|
seqnum = gst_event_get_seqnum (event);
|
|
|
|
if (rate <= 0.0)
|
|
goto wrong_rate;
|
|
|
|
if (format != GST_FORMAT_TIME)
|
|
goto wrong_format;
|
|
|
|
flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
|
|
keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
|
|
|
|
/* Work on a copy until we are sure the seek succeeded. */
|
|
memcpy (&seeksegment, &demux->segment, sizeof (GstSegment));
|
|
|
|
GST_DEBUG_OBJECT (demux, "segment before configure %" GST_SEGMENT_FORMAT,
|
|
&demux->segment);
|
|
|
|
/* Apply the seek to our segment */
|
|
gst_segment_set_seek (&seeksegment, rate, format, flags,
|
|
start_type, start, stop_type, stop, &update);
|
|
|
|
GST_DEBUG_OBJECT (demux, "segment configured %" GST_SEGMENT_FORMAT,
|
|
&seeksegment);
|
|
|
|
if (flush || seeksegment.last_stop != demux->segment.last_stop) {
|
|
gboolean ret;
|
|
guint64 new_offset = -1;
|
|
GstEvent *e;
|
|
|
|
if (!demux->metadata_resolved || demux->update_metadata) {
|
|
if (gst_mxf_demux_resolve_references (demux) != GST_FLOW_OK ||
|
|
gst_mxf_demux_update_tracks (demux) != GST_FLOW_OK) {
|
|
goto unresolved_metadata;
|
|
}
|
|
}
|
|
|
|
/* Do the actual seeking */
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
gint64 position;
|
|
guint64 off;
|
|
|
|
/* Reset EOS flag on all pads */
|
|
p->eos = FALSE;
|
|
p->last_flow = GST_FLOW_OK;
|
|
gst_mxf_demux_pad_set_last_stop (demux, p, start);
|
|
|
|
position = p->current_essence_track_position;
|
|
off = gst_mxf_demux_find_essence_element (demux, p->current_essence_track,
|
|
&position, keyframe);
|
|
new_offset = MIN (off, new_offset);
|
|
p->discont = TRUE;
|
|
}
|
|
|
|
if (new_offset == -1)
|
|
goto no_new_offset;
|
|
|
|
new_offset += demux->run_in;
|
|
|
|
GST_DEBUG_OBJECT (demux, "generating an upstream seek at position %"
|
|
G_GUINT64_FORMAT, new_offset);
|
|
e = gst_event_new_seek (seeksegment.rate, GST_FORMAT_BYTES,
|
|
seeksegment.flags | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET,
|
|
new_offset, GST_SEEK_TYPE_NONE, 0);
|
|
gst_event_set_seqnum (e, seqnum);
|
|
ret = gst_pad_push_event (demux->sinkpad, e);
|
|
|
|
if (G_UNLIKELY (!ret)) {
|
|
goto seek_failed;
|
|
}
|
|
}
|
|
|
|
/* Tell all the stream a new segment is needed */
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
p->need_segment = TRUE;
|
|
}
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
t->position = -1;
|
|
}
|
|
|
|
/* Ok seek succeeded, take the newly configured segment */
|
|
memcpy (&demux->segment, &seeksegment, sizeof (GstSegment));
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
wrong_format:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "seeking only supported in TIME format");
|
|
return gst_pad_push_event (demux->sinkpad, gst_event_ref (event));
|
|
}
|
|
wrong_rate:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "only rates > 0.0 are allowed");
|
|
return FALSE;
|
|
}
|
|
unresolved_metadata:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "metadata can't be resolved");
|
|
return gst_pad_push_event (demux->sinkpad, gst_event_ref (event));
|
|
}
|
|
seek_failed:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "upstream seek failed");
|
|
return gst_pad_push_event (demux->sinkpad, gst_event_ref (event));
|
|
}
|
|
no_new_offset:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "can't find new offset");
|
|
return gst_pad_push_event (demux->sinkpad, gst_event_ref (event));
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_seek_pull (GstMXFDemux * demux, GstEvent * event)
|
|
{
|
|
GstFormat format;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
gdouble rate;
|
|
gboolean update, flush, keyframe;
|
|
GstSegment seeksegment;
|
|
guint i;
|
|
gboolean ret = TRUE;
|
|
guint32 seqnum;
|
|
|
|
gst_event_parse_seek (event, &rate, &format, &flags,
|
|
&start_type, &start, &stop_type, &stop);
|
|
seqnum = gst_event_get_seqnum (event);
|
|
|
|
if (format != GST_FORMAT_TIME)
|
|
goto wrong_format;
|
|
|
|
if (rate <= 0.0)
|
|
goto wrong_rate;
|
|
|
|
flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
|
|
keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
|
|
|
|
if (flush) {
|
|
GstEvent *e;
|
|
|
|
/* Flush start up and downstream to make sure data flow and loops are
|
|
idle */
|
|
e = gst_event_new_flush_start ();
|
|
gst_event_set_seqnum (e, seqnum);
|
|
gst_mxf_demux_push_src_event (demux, gst_event_ref (e));
|
|
gst_pad_push_event (demux->sinkpad, e);
|
|
} else {
|
|
/* Pause the pulling task */
|
|
gst_pad_pause_task (demux->sinkpad);
|
|
}
|
|
|
|
/* Take the stream lock */
|
|
GST_PAD_STREAM_LOCK (demux->sinkpad);
|
|
|
|
if (flush) {
|
|
GstEvent *e;
|
|
|
|
/* Stop flushing upstream we need to pull */
|
|
e = gst_event_new_flush_stop ();
|
|
gst_event_set_seqnum (e, seqnum);
|
|
gst_pad_push_event (demux->sinkpad, e);
|
|
}
|
|
|
|
/* Work on a copy until we are sure the seek succeeded. */
|
|
memcpy (&seeksegment, &demux->segment, sizeof (GstSegment));
|
|
|
|
GST_DEBUG_OBJECT (demux, "segment before configure %" GST_SEGMENT_FORMAT,
|
|
&demux->segment);
|
|
|
|
/* Apply the seek to our segment */
|
|
gst_segment_set_seek (&seeksegment, rate, format, flags,
|
|
start_type, start, stop_type, stop, &update);
|
|
|
|
GST_DEBUG_OBJECT (demux, "segment configured %" GST_SEGMENT_FORMAT,
|
|
&seeksegment);
|
|
|
|
if (flush || seeksegment.last_stop != demux->segment.last_stop) {
|
|
guint64 new_offset = -1;
|
|
|
|
if (!demux->metadata_resolved || demux->update_metadata) {
|
|
if (gst_mxf_demux_resolve_references (demux) != GST_FLOW_OK ||
|
|
gst_mxf_demux_update_tracks (demux) != GST_FLOW_OK) {
|
|
goto unresolved_metadata;
|
|
}
|
|
}
|
|
|
|
/* Do the actual seeking */
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
gint64 position;
|
|
guint64 off;
|
|
|
|
/* Reset EOS flag on all pads */
|
|
p->eos = FALSE;
|
|
p->last_flow = GST_FLOW_OK;
|
|
gst_mxf_demux_pad_set_last_stop (demux, p, start);
|
|
|
|
position = p->current_essence_track_position;
|
|
off =
|
|
gst_mxf_demux_find_essence_element (demux, p->current_essence_track,
|
|
&position, keyframe);
|
|
if (off == -1) {
|
|
GST_DEBUG_OBJECT (demux, "Unable to find offset for pad %s",
|
|
GST_PAD_NAME (p));
|
|
p->current_essence_track_position = p->current_essence_track->duration;
|
|
} else {
|
|
new_offset = MIN (off, new_offset);
|
|
if (position != p->current_essence_track_position) {
|
|
p->last_flow -=
|
|
gst_util_uint64_scale (p->current_essence_track_position -
|
|
position,
|
|
GST_SECOND * p->current_essence_track->source_track->edit_rate.d,
|
|
p->current_essence_track->source_track->edit_rate.d);
|
|
}
|
|
p->current_essence_track_position = position;
|
|
}
|
|
p->discont = TRUE;
|
|
}
|
|
if (new_offset == -1) {
|
|
GST_WARNING_OBJECT (demux, "No new offset found");
|
|
ret = FALSE;
|
|
} else {
|
|
demux->offset = new_offset + demux->run_in;
|
|
}
|
|
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
|
|
}
|
|
|
|
if (G_UNLIKELY (demux->close_seg_event)) {
|
|
gst_event_unref (demux->close_seg_event);
|
|
demux->close_seg_event = NULL;
|
|
}
|
|
|
|
if (flush) {
|
|
GstEvent *e;
|
|
|
|
/* Stop flushing, the sinks are at time 0 now */
|
|
e = gst_event_new_flush_stop ();
|
|
gst_event_set_seqnum (e, seqnum);
|
|
gst_mxf_demux_push_src_event (demux, e);
|
|
} else {
|
|
GST_DEBUG_OBJECT (demux, "closing running segment %" GST_SEGMENT_FORMAT,
|
|
&demux->segment);
|
|
|
|
/* Close the current segment for a linear playback */
|
|
demux->close_seg_event = gst_event_new_new_segment (TRUE,
|
|
demux->segment.rate, demux->segment.format,
|
|
demux->segment.start, demux->segment.last_stop, demux->segment.time);
|
|
gst_event_set_seqnum (demux->close_seg_event, demux->seqnum);
|
|
}
|
|
|
|
/* Ok seek succeeded, take the newly configured segment */
|
|
memcpy (&demux->segment, &seeksegment, sizeof (GstSegment));
|
|
|
|
/* Notify about the start of a new segment */
|
|
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
GstMessage *m;
|
|
|
|
m = gst_message_new_segment_start (GST_OBJECT (demux),
|
|
demux->segment.format, demux->segment.last_stop);
|
|
gst_message_set_seqnum (m, seqnum);
|
|
gst_element_post_message (GST_ELEMENT (demux), m);
|
|
}
|
|
|
|
/* Tell all the stream a new segment is needed */
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
p->need_segment = TRUE;
|
|
}
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
t->position = -1;
|
|
}
|
|
|
|
demux->seqnum = seqnum;
|
|
|
|
gst_pad_start_task (demux->sinkpad,
|
|
(GstTaskFunction) gst_mxf_demux_loop, demux->sinkpad, NULL);
|
|
|
|
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
wrong_format:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "seeking only supported in TIME format");
|
|
return FALSE;
|
|
}
|
|
wrong_rate:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "only rates > 0.0 are allowed");
|
|
return FALSE;
|
|
}
|
|
unresolved_metadata:
|
|
{
|
|
gst_pad_start_task (demux->sinkpad,
|
|
(GstTaskFunction) gst_mxf_demux_loop, demux->sinkpad, NULL);
|
|
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
|
|
GST_WARNING_OBJECT (demux, "metadata can't be resolved");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (gst_pad_get_parent (pad));
|
|
gboolean ret;
|
|
|
|
GST_DEBUG_OBJECT (pad, "handling event %s", GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
if (demux->random_access)
|
|
ret = gst_mxf_demux_seek_pull (demux, event);
|
|
else
|
|
ret = gst_mxf_demux_seek_push (demux, event);
|
|
gst_event_unref (event);
|
|
break;
|
|
default:
|
|
ret = gst_pad_push_event (demux->sinkpad, event);
|
|
break;
|
|
}
|
|
|
|
gst_object_unref (demux);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const GstQueryType *
|
|
gst_mxf_demux_src_query_type (GstPad * pad)
|
|
{
|
|
static const GstQueryType types[] = {
|
|
GST_QUERY_POSITION,
|
|
GST_QUERY_DURATION,
|
|
GST_QUERY_SEEKING,
|
|
0
|
|
};
|
|
|
|
return types;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_src_query (GstPad * pad, GstQuery * query)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (gst_pad_get_parent (pad));
|
|
gboolean ret = FALSE;
|
|
GstMXFDemuxPad *mxfpad = GST_MXF_DEMUX_PAD (pad);
|
|
|
|
GST_DEBUG_OBJECT (pad, "handling query %s",
|
|
gst_query_type_get_name (GST_QUERY_TYPE (query)));
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
gint64 pos;
|
|
|
|
gst_query_parse_position (query, &format, NULL);
|
|
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT)
|
|
goto error;
|
|
|
|
pos = mxfpad->last_stop;
|
|
|
|
g_static_rw_lock_reader_lock (&demux->metadata_lock);
|
|
if (format == GST_FORMAT_DEFAULT && pos != GST_CLOCK_TIME_NONE) {
|
|
if (!mxfpad->material_track || mxfpad->material_track->edit_rate.n == 0
|
|
|| mxfpad->material_track->edit_rate.d == 0) {
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
goto error;
|
|
}
|
|
|
|
pos =
|
|
gst_util_uint64_scale (pos,
|
|
mxfpad->material_track->edit_rate.n,
|
|
mxfpad->material_track->edit_rate.d * GST_SECOND);
|
|
}
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Returning position %" G_GINT64_FORMAT " in format %s", pos,
|
|
gst_format_get_name (format));
|
|
|
|
gst_query_set_position (query, format, pos);
|
|
ret = TRUE;
|
|
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:{
|
|
gint64 duration;
|
|
GstFormat format;
|
|
|
|
gst_query_parse_duration (query, &format, NULL);
|
|
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT)
|
|
goto error;
|
|
|
|
g_static_rw_lock_reader_lock (&demux->metadata_lock);
|
|
if (!mxfpad->material_track || !mxfpad->material_track->parent.sequence) {
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
goto error;
|
|
}
|
|
|
|
duration = mxfpad->material_track->parent.sequence->duration;
|
|
if (duration <= -1)
|
|
duration = -1;
|
|
|
|
if (duration != -1 && format == GST_FORMAT_TIME) {
|
|
if (mxfpad->material_track->edit_rate.n == 0 ||
|
|
mxfpad->material_track->edit_rate.d == 0) {
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
goto error;
|
|
}
|
|
|
|
duration =
|
|
gst_util_uint64_scale (duration,
|
|
GST_SECOND * mxfpad->material_track->edit_rate.d,
|
|
mxfpad->material_track->edit_rate.n);
|
|
}
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Returning duration %" G_GINT64_FORMAT " in format %s", duration,
|
|
gst_format_get_name (format));
|
|
|
|
gst_query_set_duration (query, format, duration);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GST_QUERY_SEEKING:{
|
|
GstFormat fmt;
|
|
|
|
ret = TRUE;
|
|
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
|
|
if (fmt != GST_FORMAT_TIME) {
|
|
gst_query_set_seeking (query, fmt, FALSE, -1, -1);
|
|
goto done;
|
|
}
|
|
|
|
if (demux->random_access) {
|
|
gst_query_set_seeking (query, GST_FORMAT_TIME, TRUE, 0, -1);
|
|
} else {
|
|
GstQuery *peerquery = gst_query_new_seeking (GST_FORMAT_BYTES);
|
|
gboolean seekable;
|
|
|
|
seekable = gst_pad_peer_query (demux->sinkpad, peerquery);
|
|
if (seekable)
|
|
gst_query_parse_seeking (peerquery, NULL, &seekable, NULL, NULL);
|
|
if (seekable)
|
|
gst_query_set_seeking (query, GST_FORMAT_TIME, TRUE, 0, -1);
|
|
else
|
|
gst_query_set_seeking (query, GST_FORMAT_TIME, FALSE, -1, -1);
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
/* else forward upstream */
|
|
ret = gst_pad_peer_query (demux->sinkpad, query);
|
|
break;
|
|
}
|
|
|
|
done:
|
|
gst_object_unref (demux);
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "query failed");
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_sink_activate (GstPad * sinkpad)
|
|
{
|
|
if (gst_pad_check_pull_range (sinkpad)) {
|
|
return gst_pad_activate_pull (sinkpad, TRUE);
|
|
} else {
|
|
return gst_pad_activate_push (sinkpad, TRUE);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_sink_activate_push (GstPad * sinkpad, gboolean active)
|
|
{
|
|
GstMXFDemux *demux;
|
|
|
|
demux = GST_MXF_DEMUX (gst_pad_get_parent (sinkpad));
|
|
|
|
demux->random_access = FALSE;
|
|
|
|
gst_object_unref (demux);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
|
|
{
|
|
GstMXFDemux *demux;
|
|
|
|
demux = GST_MXF_DEMUX (gst_pad_get_parent (sinkpad));
|
|
|
|
if (active) {
|
|
demux->random_access = TRUE;
|
|
gst_object_unref (demux);
|
|
return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_mxf_demux_loop,
|
|
sinkpad, NULL);
|
|
} else {
|
|
demux->random_access = FALSE;
|
|
gst_object_unref (demux);
|
|
return gst_pad_stop_task (sinkpad);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_sink_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstMXFDemux *demux;
|
|
gboolean ret = FALSE;
|
|
|
|
demux = GST_MXF_DEMUX (gst_pad_get_parent (pad));
|
|
|
|
GST_DEBUG_OBJECT (pad, "handling event %s", GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_START:
|
|
demux->flushing = TRUE;
|
|
ret = gst_mxf_demux_push_src_event (demux, event);
|
|
break;
|
|
case GST_EVENT_FLUSH_STOP:
|
|
GST_DEBUG_OBJECT (demux, "flushing queued data in the MXF demuxer");
|
|
|
|
gst_adapter_clear (demux->adapter);
|
|
demux->flushing = FALSE;
|
|
demux->offset = 0;
|
|
ret = gst_mxf_demux_push_src_event (demux, event);
|
|
break;
|
|
case GST_EVENT_EOS:{
|
|
GstMXFDemuxPad *p = NULL;
|
|
guint i;
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
|
|
|
|
if (t->position > 0)
|
|
t->duration = t->position;
|
|
}
|
|
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *p = g_ptr_array_index (demux->src, i);
|
|
|
|
if (!p->eos
|
|
&& p->current_essence_track_position >=
|
|
p->current_essence_track->duration) {
|
|
p->eos = TRUE;
|
|
gst_pad_push_event (GST_PAD_CAST (p), gst_event_new_eos ());
|
|
}
|
|
}
|
|
|
|
while ((p = gst_mxf_demux_get_earliest_pad (demux))) {
|
|
guint64 offset;
|
|
gint64 position;
|
|
|
|
position = p->current_essence_track_position;
|
|
|
|
offset =
|
|
gst_mxf_demux_find_essence_element (demux, p->current_essence_track,
|
|
&position, FALSE);
|
|
if (offset == -1) {
|
|
GST_ERROR_OBJECT (demux, "Failed to find offset for essence track");
|
|
p->eos = TRUE;
|
|
gst_pad_push_event (GST_PAD_CAST (p), gst_event_new_eos ());
|
|
continue;
|
|
}
|
|
|
|
if (gst_pad_push_event (demux->sinkpad,
|
|
gst_event_new_seek (demux->segment.rate, GST_FORMAT_BYTES,
|
|
demux->segment.flags | GST_SEEK_FLAG_ACCURATE,
|
|
GST_SEEK_TYPE_SET, offset + demux->run_in,
|
|
GST_SEEK_TYPE_NONE, 0))) {
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *etrack =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
|
|
i);
|
|
etrack->position = -1;
|
|
}
|
|
ret = TRUE;
|
|
goto out;
|
|
} else {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Seek to remaining part of the file failed");
|
|
}
|
|
}
|
|
|
|
if (!(ret = gst_mxf_demux_push_src_event (demux, event)))
|
|
GST_WARNING_OBJECT (pad, "failed pushing EOS on streams");
|
|
break;
|
|
}
|
|
case GST_EVENT_NEWSEGMENT:{
|
|
guint i;
|
|
|
|
for (i = 0; i < demux->essence_tracks->len; i++) {
|
|
GstMXFDemuxEssenceTrack *t =
|
|
&g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
|
|
i);
|
|
t->position = -1;
|
|
}
|
|
demux->current_partition = NULL;
|
|
demux->seqnum = gst_event_get_seqnum (event);
|
|
gst_event_unref (event);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_mxf_demux_push_src_event (demux, event);
|
|
break;
|
|
}
|
|
|
|
out:
|
|
gst_object_unref (demux);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const GstQueryType *
|
|
gst_mxf_demux_get_query_types (GstElement * element)
|
|
{
|
|
static const GstQueryType types[] = {
|
|
GST_QUERY_POSITION,
|
|
GST_QUERY_DURATION,
|
|
0
|
|
};
|
|
|
|
return types;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mxf_demux_query (GstElement * element, GstQuery * query)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (element);
|
|
gboolean ret = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (demux, "handling query %s",
|
|
gst_query_type_get_name (GST_QUERY_TYPE (query)));
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
gint64 pos;
|
|
|
|
gst_query_parse_position (query, &format, NULL);
|
|
if (format != GST_FORMAT_TIME)
|
|
goto error;
|
|
|
|
pos = demux->segment.last_stop;
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Returning position %" G_GINT64_FORMAT " in format %s", pos,
|
|
gst_format_get_name (format));
|
|
|
|
gst_query_set_position (query, format, pos);
|
|
ret = TRUE;
|
|
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:{
|
|
gint64 duration = -1;
|
|
GstFormat format;
|
|
guint i;
|
|
|
|
gst_query_parse_duration (query, &format, NULL);
|
|
if (format != GST_FORMAT_TIME)
|
|
goto error;
|
|
|
|
if (demux->src->len == 0)
|
|
goto done;
|
|
|
|
g_static_rw_lock_reader_lock (&demux->metadata_lock);
|
|
for (i = 0; i < demux->src->len; i++) {
|
|
GstMXFDemuxPad *pad = g_ptr_array_index (demux->src, i);
|
|
gint64 pdur = -1;
|
|
|
|
if (!pad->material_track || !pad->material_track->parent.sequence)
|
|
continue;
|
|
|
|
pdur = pad->material_track->parent.sequence->duration;
|
|
if (pad->material_track->edit_rate.n == 0 ||
|
|
pad->material_track->edit_rate.d == 0 || pdur <= -1)
|
|
continue;
|
|
|
|
pdur =
|
|
gst_util_uint64_scale (pdur,
|
|
GST_SECOND * pad->material_track->edit_rate.d,
|
|
pad->material_track->edit_rate.n);
|
|
duration = MAX (duration, pdur);
|
|
}
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
|
|
if (duration == -1) {
|
|
GST_DEBUG_OBJECT (demux, "No duration known (yet)");
|
|
goto done;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Returning duration %" G_GINT64_FORMAT " in format %s", duration,
|
|
gst_format_get_name (format));
|
|
|
|
gst_query_set_duration (query, format, duration);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GST_QUERY_SEEKING:{
|
|
GstFormat fmt;
|
|
|
|
ret = TRUE;
|
|
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
|
|
if (fmt != GST_FORMAT_TIME) {
|
|
gst_query_set_seeking (query, fmt, FALSE, -1, -1);
|
|
goto done;
|
|
}
|
|
|
|
if (demux->random_access) {
|
|
gst_query_set_seeking (query, GST_FORMAT_TIME, TRUE, 0, -1);
|
|
} else {
|
|
GstQuery *peerquery = gst_query_new_seeking (GST_FORMAT_BYTES);
|
|
gboolean seekable;
|
|
|
|
seekable = gst_pad_peer_query (demux->sinkpad, peerquery);
|
|
if (seekable)
|
|
gst_query_parse_seeking (peerquery, NULL, &seekable, NULL, NULL);
|
|
if (seekable)
|
|
gst_query_set_seeking (query, GST_FORMAT_TIME, TRUE, 0, -1);
|
|
else
|
|
gst_query_set_seeking (query, GST_FORMAT_TIME, FALSE, -1, -1);
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
/* else forward upstream */
|
|
ret = gst_pad_peer_query (demux->sinkpad, query);
|
|
break;
|
|
}
|
|
|
|
done:
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
GST_DEBUG_OBJECT (demux, "query failed");
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_mxf_demux_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
demux->seqnum = gst_util_seqnum_next ();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_mxf_demux_reset (demux);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PACKAGE:
|
|
g_free (demux->requested_package_string);
|
|
demux->requested_package_string = g_value_dup_string (value);
|
|
break;
|
|
case PROP_MAX_DRIFT:
|
|
demux->max_drift = g_value_get_uint64 (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PACKAGE:
|
|
g_value_set_string (value, demux->current_package_string);
|
|
break;
|
|
case PROP_MAX_DRIFT:
|
|
g_value_set_uint64 (value, demux->max_drift);
|
|
break;
|
|
case PROP_STRUCTURE:{
|
|
GstStructure *s;
|
|
|
|
g_static_rw_lock_reader_lock (&demux->metadata_lock);
|
|
if (demux->preface)
|
|
s = mxf_metadata_base_to_structure (MXF_METADATA_BASE (demux->preface));
|
|
else
|
|
s = NULL;
|
|
|
|
gst_value_set_structure (value, s);
|
|
|
|
if (s)
|
|
gst_structure_free (s);
|
|
|
|
g_static_rw_lock_reader_unlock (&demux->metadata_lock);
|
|
break;
|
|
}
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_finalize (GObject * object)
|
|
{
|
|
GstMXFDemux *demux = GST_MXF_DEMUX (object);
|
|
|
|
gst_mxf_demux_reset (demux);
|
|
|
|
if (demux->adapter) {
|
|
g_object_unref (demux->adapter);
|
|
demux->adapter = NULL;
|
|
}
|
|
|
|
if (demux->close_seg_event) {
|
|
gst_event_unref (demux->close_seg_event);
|
|
demux->close_seg_event = NULL;
|
|
}
|
|
|
|
g_free (demux->current_package_string);
|
|
demux->current_package_string = NULL;
|
|
g_free (demux->requested_package_string);
|
|
demux->requested_package_string = NULL;
|
|
|
|
g_ptr_array_free (demux->src, TRUE);
|
|
demux->src = NULL;
|
|
g_array_free (demux->essence_tracks, TRUE);
|
|
demux->essence_tracks = NULL;
|
|
|
|
g_hash_table_destroy (demux->metadata);
|
|
|
|
g_static_rw_lock_free (&demux->metadata_lock);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_base_init (gpointer g_class)
|
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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|
|
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gst_element_class_add_pad_template (element_class,
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|
gst_static_pad_template_get (&mxf_sink_template));
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|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&mxf_src_template));
|
|
gst_element_class_set_details_simple (element_class, "MXF Demuxer",
|
|
"Codec/Demuxer",
|
|
"Demux MXF files", "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_class_init (GstMXFDemuxClass * klass)
|
|
{
|
|
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (mxfdemux_debug, "mxfdemux", 0, "MXF demuxer");
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|
|
|
gobject_class->finalize = gst_mxf_demux_finalize;
|
|
gobject_class->set_property = gst_mxf_demux_set_property;
|
|
gobject_class->get_property = gst_mxf_demux_get_property;
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|
|
|
g_object_class_install_property (gobject_class, PROP_PACKAGE,
|
|
g_param_spec_string ("package", "Package",
|
|
"Material or Source package to use for playback", NULL,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_MAX_DRIFT,
|
|
g_param_spec_uint64 ("max-drift", "Maximum drift",
|
|
"Maximum number of nanoseconds by which tracks can differ",
|
|
100 * GST_MSECOND, G_MAXUINT64, 500 * GST_MSECOND,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_STRUCTURE,
|
|
g_param_spec_boxed ("structure", "Structure",
|
|
"Structural metadata of the MXF file",
|
|
GST_TYPE_STRUCTURE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_change_state);
|
|
gstelement_class->query = GST_DEBUG_FUNCPTR (gst_mxf_demux_query);
|
|
gstelement_class->get_query_types =
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_get_query_types);
|
|
}
|
|
|
|
static void
|
|
gst_mxf_demux_init (GstMXFDemux * demux, GstMXFDemuxClass * g_class)
|
|
{
|
|
demux->sinkpad =
|
|
gst_pad_new_from_static_template (&mxf_sink_template, "sink");
|
|
|
|
gst_pad_set_event_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_sink_event));
|
|
gst_pad_set_chain_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_chain));
|
|
gst_pad_set_activate_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_sink_activate));
|
|
gst_pad_set_activatepull_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_sink_activate_pull));
|
|
gst_pad_set_activatepush_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_mxf_demux_sink_activate_push));
|
|
|
|
gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
|
|
|
|
demux->max_drift = 500 * GST_MSECOND;
|
|
|
|
demux->adapter = gst_adapter_new ();
|
|
g_static_rw_lock_init (&demux->metadata_lock);
|
|
|
|
demux->src = g_ptr_array_new ();
|
|
demux->essence_tracks =
|
|
g_array_new (FALSE, FALSE, sizeof (GstMXFDemuxEssenceTrack));
|
|
|
|
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
|
|
|
|
gst_mxf_demux_reset (demux);
|
|
}
|