/* GStreamer
* Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* TODO:
* - start at correct position of the component, switch components
* - RandomIndex / IndexSegment support
* - timecode tracks
* - descriptive metadata
* - generic container system items
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mxfdemux.h"
#include "mxfparse.h"
#include "mxfaes-bwf.h"
#include "mxfmpeg.h"
#include "mxfdv-dif.h"
#include <string.h>
static GstStaticPadTemplate mxf_sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/mxf")
);
static GstStaticPadTemplate audio_src_template =
GST_STATIC_PAD_TEMPLATE ("audio_%u",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate video_src_template =
GST_STATIC_PAD_TEMPLATE ("video_%u",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate data_src_template =
GST_STATIC_PAD_TEMPLATE ("data_%u",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (mxfdemux_debug);
#define GST_CAT_DEFAULT mxfdemux_debug
#define GST_TYPE_MXF_PAD (gst_mxf_pad_get_type())
#define GST_MXF_PAD(pad) (G_TYPE_CHECK_INSTANCE_CAST((pad),GST_TYPE_MXF_PAD,GstMXFPad))
#define GST_MXF_PAD_CAST(pad) ((GstMXFPad *) pad)
#define GST_IS_MXF_PAD(pad) (G_TYPE_CHECK_INSTANCE_TYPE((pad),GST_TYPE_MXF_PAD))
typedef struct
{
GstPad parent;
guint32 track_id;
MXFMetadataTrackType track_type;
gboolean need_segment;
GstFlowReturn last_flow;
guint64 essence_element_count;
MXFEssenceElementHandler handle_essence_element;
gpointer mapping_data;
GstTagList *tags;
guint current_material_component;
MXFMetadataGenericPackage *material_package;
MXFMetadataTrack *material_track;
MXFMetadataStructuralComponent *component;
MXFMetadataGenericPackage *source_package;
MXFMetadataTrack *source_track;
GstCaps *caps;
} GstMXFPad;
typedef struct
{
GstPadClass parent;
} GstMXFPadClass;
G_DEFINE_TYPE (GstMXFPad, gst_mxf_pad, GST_TYPE_PAD);
static void
gst_mxf_pad_finalize (GObject * object)
{
GstMXFPad *pad = GST_MXF_PAD (object);
gst_caps_replace (&pad->caps, NULL);
g_free (pad->mapping_data);
pad->mapping_data = NULL;
if (pad->tags) {
gst_tag_list_free (pad->tags);
pad->tags = NULL;
}
G_OBJECT_CLASS (gst_mxf_pad_parent_class)->finalize (object);
}
static void
gst_mxf_pad_class_init (GstMXFPadClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gobject_class->finalize = gst_mxf_pad_finalize;
}
static void
gst_mxf_pad_init (GstMXFPad * pad)
{
pad->last_flow = GST_FLOW_OK;
}
static gboolean gst_mxf_demux_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_mxf_demux_src_event (GstPad * pad, GstEvent * event);
static const GstQueryType *gst_mxf_demux_src_query_type (GstPad * pad);
static gboolean gst_mxf_demux_src_query (GstPad * pad, GstQuery * query);
GST_BOILERPLATE (GstMXFDemux, gst_mxf_demux, GstElement, GST_TYPE_ELEMENT);
static void
gst_mxf_demux_flush (GstMXFDemux * demux, gboolean discont)
{
GST_DEBUG_OBJECT (demux, "flushing queued data in the MXF demuxer");
gst_adapter_clear (demux->adapter);
demux->flushing = FALSE;
/* Only in push mode */
if (!demux->random_access) {
/* We reset the offset and will get one from first push */
demux->offset = 0;
}
}
static void
gst_mxf_demux_remove_pad (GstMXFPad * pad, GstMXFDemux * demux)
{
gst_element_remove_pad (GST_ELEMENT (demux), GST_PAD (pad));
}
static void
gst_mxf_demux_reset_mxf_state (GstMXFDemux * demux)
{
GST_DEBUG_OBJECT (demux, "Resetting MXF state");
mxf_partition_pack_reset (&demux->partition);
mxf_primer_pack_reset (&demux->primer);
}
static void
gst_mxf_demux_reset_metadata (GstMXFDemux * demux)
{
guint i;
GST_DEBUG_OBJECT (demux, "Resetting metadata");
demux->update_metadata = TRUE;
demux->final_metadata = FALSE;
demux->current_package = NULL;
if (demux->src) {
for (i = 0; i < demux->src->len; i++) {
GstMXFPad *pad = g_ptr_array_index (demux->src, i);
pad->material_track = NULL;
pad->material_package = NULL;
pad->component = NULL;
pad->source_track = NULL;
pad->source_package = NULL;
}
}
mxf_metadata_preface_reset (&demux->preface);
if (demux->identification) {
for (i = 0; i < demux->identification->len; i++)
mxf_metadata_identification_reset (&g_array_index (demux->identification,
MXFMetadataIdentification, i));
g_array_free (demux->identification, TRUE);
demux->identification = NULL;
}
mxf_metadata_content_storage_reset (&demux->content_storage);
if (demux->essence_container_data) {
for (i = 0; i < demux->essence_container_data->len; i++)
mxf_metadata_essence_container_data_reset (&g_array_index
(demux->essence_container_data, MXFMetadataEssenceContainerData, i));
g_array_free (demux->essence_container_data, TRUE);
demux->essence_container_data = NULL;
}
if (demux->material_package) {
for (i = 0; i < demux->material_package->len; i++)
mxf_metadata_generic_package_reset (&g_array_index
(demux->material_package, MXFMetadataGenericPackage, i));
g_array_free (demux->material_package, TRUE);
demux->material_package = NULL;
}
if (demux->source_package) {
for (i = 0; i < demux->source_package->len; i++)
mxf_metadata_generic_package_reset (&g_array_index (demux->source_package,
MXFMetadataGenericPackage, i));
g_array_free (demux->source_package, TRUE);
demux->source_package = NULL;
}
if (demux->package) {
g_ptr_array_free (demux->package, TRUE);
demux->package = NULL;
}
if (demux->track) {
for (i = 0; i < demux->track->len; i++)
mxf_metadata_track_reset (&g_array_index (demux->track,
MXFMetadataTrack, i));
g_array_free (demux->track, TRUE);
demux->track = NULL;
}
if (demux->sequence) {
for (i = 0; i < demux->sequence->len; i++)
mxf_metadata_sequence_reset (&g_array_index (demux->sequence,
MXFMetadataSequence, i));
g_array_free (demux->sequence, TRUE);
demux->sequence = NULL;
}
if (demux->structural_component) {
for (i = 0; i < demux->structural_component->len; i++)
mxf_metadata_structural_component_reset (&g_array_index
(demux->structural_component, MXFMetadataStructuralComponent, i));
g_array_free (demux->structural_component, TRUE);
demux->structural_component = NULL;
}
if (demux->generic_descriptor) {
for (i = 0; i < demux->generic_descriptor->len; i++)
mxf_metadata_generic_descriptor_reset (&g_array_index
(demux->generic_descriptor, MXFMetadataGenericDescriptor, i));
g_array_free (demux->generic_descriptor, TRUE);
demux->generic_descriptor = NULL;
}
if (demux->file_descriptor) {
for (i = 0; i < demux->file_descriptor->len; i++)
mxf_metadata_file_descriptor_reset (&g_array_index
(demux->file_descriptor, MXFMetadataFileDescriptor, i));
g_array_free (demux->file_descriptor, TRUE);
demux->file_descriptor = NULL;
}
if (demux->multiple_descriptor) {
for (i = 0; i < demux->multiple_descriptor->len; i++)
mxf_metadata_multiple_descriptor_reset (&g_array_index
(demux->multiple_descriptor, MXFMetadataMultipleDescriptor, i));
g_array_free (demux->multiple_descriptor, TRUE);
demux->multiple_descriptor = NULL;
}
if (demux->generic_picture_essence_descriptor) {
for (i = 0; i < demux->generic_picture_essence_descriptor->len; i++)
mxf_metadata_generic_picture_essence_descriptor_reset (&g_array_index
(demux->generic_picture_essence_descriptor,
MXFMetadataGenericPictureEssenceDescriptor, i));
g_array_free (demux->generic_picture_essence_descriptor, TRUE);
demux->generic_picture_essence_descriptor = NULL;
}
if (demux->cdci_picture_essence_descriptor) {
for (i = 0; i < demux->cdci_picture_essence_descriptor->len; i++)
mxf_metadata_cdci_picture_essence_descriptor_reset (&g_array_index
(demux->cdci_picture_essence_descriptor,
MXFMetadataCDCIPictureEssenceDescriptor, i));
g_array_free (demux->cdci_picture_essence_descriptor, TRUE);
demux->cdci_picture_essence_descriptor = NULL;
}
if (demux->rgba_picture_essence_descriptor) {
for (i = 0; i < demux->rgba_picture_essence_descriptor->len; i++)
mxf_metadata_rgba_picture_essence_descriptor_reset (&g_array_index
(demux->rgba_picture_essence_descriptor,
MXFMetadataRGBAPictureEssenceDescriptor, i));
g_array_free (demux->rgba_picture_essence_descriptor, TRUE);
demux->rgba_picture_essence_descriptor = NULL;
}
if (demux->mpeg_video_descriptor) {
for (i = 0; i < demux->mpeg_video_descriptor->len; i++)
mxf_metadata_mpeg_video_descriptor_reset (&g_array_index
(demux->mpeg_video_descriptor, MXFMetadataMPEGVideoDescriptor, i));
g_array_free (demux->mpeg_video_descriptor, TRUE);
demux->mpeg_video_descriptor = NULL;
}
if (demux->generic_sound_essence_descriptor) {
for (i = 0; i < demux->generic_sound_essence_descriptor->len; i++)
mxf_metadata_generic_sound_essence_descriptor_reset (&g_array_index
(demux->generic_sound_essence_descriptor,
MXFMetadataGenericSoundEssenceDescriptor, i));
g_array_free (demux->generic_sound_essence_descriptor, TRUE);
demux->generic_sound_essence_descriptor = NULL;
}
if (demux->wave_audio_essence_descriptor) {
for (i = 0; i < demux->wave_audio_essence_descriptor->len; i++)
mxf_metadata_wave_audio_essence_descriptor_reset (&g_array_index
(demux->wave_audio_essence_descriptor,
MXFMetadataWaveAudioEssenceDescriptor, i));
g_array_free (demux->wave_audio_essence_descriptor, TRUE);
demux->wave_audio_essence_descriptor = NULL;
}
if (demux->descriptor) {
g_ptr_array_free (demux->descriptor, TRUE);
demux->descriptor = NULL;
}
if (demux->locator) {
for (i = 0; i < demux->locator->len; i++)
mxf_metadata_locator_reset (&g_array_index (demux->locator,
MXFMetadataLocator, i));
g_array_free (demux->locator, TRUE);
demux->locator = NULL;
}
}
static void
gst_mxf_demux_reset (GstMXFDemux * demux)
{
GST_DEBUG_OBJECT (demux, "cleaning up MXF demuxer");
demux->flushing = FALSE;
demux->header_partition_pack_offset = 0;
demux->footer_partition_pack_offset = 0;
demux->offset = 0;
demux->pull_footer_metadata = TRUE;
demux->run_in = -1;
memset (&demux->current_package_uid, 0, sizeof (MXFUMID));
if (demux->new_seg_event) {
gst_event_unref (demux->new_seg_event);
demux->new_seg_event = NULL;
}
if (demux->close_seg_event) {
gst_event_unref (demux->close_seg_event);
demux->close_seg_event = NULL;
}
gst_adapter_clear (demux->adapter);
if (demux->src) {
g_ptr_array_foreach (demux->src, (GFunc) gst_mxf_demux_remove_pad, demux);
g_ptr_array_foreach (demux->src, (GFunc) gst_object_unref, NULL);
g_ptr_array_free (demux->src, TRUE);
demux->src = NULL;
}
if (demux->partition_index) {
g_array_free (demux->partition_index, TRUE);
demux->partition_index = NULL;
}
if (demux->index_table) {
guint i;
for (i = 0; i < demux->index_table->len; i++)
mxf_index_table_segment_reset (&g_array_index (demux->index_table,
MXFIndexTableSegment, i));
g_array_free (demux->index_table, TRUE);
demux->index_table = NULL;
}
gst_mxf_demux_reset_mxf_state (demux);
gst_mxf_demux_reset_metadata (demux);
}
static GstFlowReturn
gst_mxf_demux_combine_flows (GstMXFDemux * demux,
GstMXFPad * pad, GstFlowReturn ret)
{
guint i;
/* store the value */
pad->last_flow = ret;
/* any other error that is not-linked can be returned right away */
if (ret != GST_FLOW_NOT_LINKED)
goto done;
/* only return NOT_LINKED if all other pads returned NOT_LINKED */
g_assert (demux->src->len != 0);
for (i = 0; i < demux->src->len; i++) {
GstMXFPad *opad = g_ptr_array_index (demux->src, i);
if (opad == NULL)
continue;
ret = opad->last_flow;
/* some other return value (must be SUCCESS but we can return
* other values as well) */
if (ret != GST_FLOW_NOT_LINKED)
goto done;
}
/* if we get here, all other pads were unlinked and we return
* NOT_LINKED then */
done:
GST_LOG_OBJECT (demux, "combined return %s", gst_flow_get_name (ret));
return ret;
}
static GstFlowReturn
gst_mxf_demux_pull_range (GstMXFDemux * demux, guint64 offset,
guint size, GstBuffer ** buffer)
{
GstFlowReturn ret;
ret = gst_pad_pull_range (demux->sinkpad, offset, size, buffer);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
GST_WARNING_OBJECT (demux,
"failed when pulling %u bytes from offset %" G_GUINT64_FORMAT ": %s",
size, offset, gst_flow_get_name (ret));
*buffer = NULL;
return ret;
}
if (G_UNLIKELY (*buffer && GST_BUFFER_SIZE (*buffer) != size)) {
GST_WARNING_OBJECT (demux,
"partial pull got %u when expecting %u from offset %" G_GUINT64_FORMAT,
GST_BUFFER_SIZE (*buffer), size, offset);
gst_buffer_unref (*buffer);
ret = GST_FLOW_UNEXPECTED;
*buffer = NULL;
return ret;
}
return ret;
}
static gboolean
gst_mxf_demux_push_src_event (GstMXFDemux * demux, GstEvent * event)
{
gboolean ret = TRUE;
guint i;
GST_DEBUG_OBJECT (demux, "Pushing '%s' event downstream",
GST_EVENT_TYPE_NAME (event));
if (!demux->src)
return ret;
for (i = 0; i < demux->src->len; i++) {
GstPad *pad = GST_PAD (g_ptr_array_index (demux->src, i));
ret |= gst_pad_push_event (pad, gst_event_ref (event));
}
gst_event_unref (event);
return ret;
}
static GstFlowReturn
gst_mxf_demux_handle_partition_pack (GstMXFDemux * demux, const MXFUL * key,
GstBuffer * buffer)
{
if (demux->partition.valid) {
mxf_partition_pack_reset (&demux->partition);
mxf_primer_pack_reset (&demux->primer);
}
GST_DEBUG_OBJECT (demux,
"Handling partition pack of size %u at offset %"
G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_partition_pack_parse (key, &demux->partition,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing partition pack failed");
return GST_FLOW_ERROR;
}
if (demux->partition.type == MXF_PARTITION_PACK_HEADER)
demux->footer_partition_pack_offset = demux->partition.footer_partition;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_primer_pack (GstMXFDemux * demux, const MXFUL * key,
GstBuffer * buffer)
{
GST_DEBUG_OBJECT (demux,
"Handling primer pack of size %u at offset %"
G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (G_UNLIKELY (!demux->partition.valid)) {
GST_ERROR_OBJECT (demux, "Primer pack before partition pack");
return GST_FLOW_ERROR;
}
if (G_UNLIKELY (demux->primer.valid)) {
GST_ERROR_OBJECT (demux, "Primer pack already exists");
return GST_FLOW_ERROR;
}
if (!mxf_primer_pack_parse (key, &demux->primer,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing primer pack failed");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_preface (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataPreface preface;
GST_DEBUG_OBJECT (demux,
"Handling metadata preface of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (demux->final_metadata) {
GST_DEBUG_OBJECT (demux, "Metadata is already final, skipping");
return GST_FLOW_OK;
}
if (!mxf_metadata_preface_parse (key, &preface, &demux->primer,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata preface failed");
return GST_FLOW_ERROR;
}
if (mxf_timestamp_is_unknown (&demux->preface.last_modified_date)
|| (!mxf_timestamp_is_unknown (&preface.last_modified_date)
&& mxf_timestamp_compare (&demux->preface.last_modified_date,
&preface.last_modified_date) < 0)) {
GST_DEBUG_OBJECT (demux,
"Timestamp of new preface is newer than old, updating metadata");
gst_mxf_demux_reset_metadata (demux);
memcpy (&demux->preface, &preface, sizeof (MXFMetadataPreface));
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_identification (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataIdentification identification;
GST_DEBUG_OBJECT (demux,
"Handling metadata identification of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_identification_parse (key, &identification,
&demux->primer, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata identification failed");
return GST_FLOW_ERROR;
}
if (!demux->identification)
demux->identification =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataIdentification));
g_array_append_val (demux->identification, identification);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_content_storage (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
GST_DEBUG_OBJECT (demux,
"Handling metadata content storage of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_content_storage_parse (key,
&demux->content_storage, &demux->primer, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata content storage failed");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_essence_container_data (GstMXFDemux *
demux, const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataEssenceContainerData essence_container_data;
GST_DEBUG_OBJECT (demux,
"Handling metadata essence container data of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_essence_container_data_parse (key,
&essence_container_data, &demux->primer, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata essence container data failed");
return GST_FLOW_ERROR;
}
if (!demux->essence_container_data)
demux->essence_container_data =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataEssenceContainerData));
g_array_append_val (demux->essence_container_data, essence_container_data);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_material_package (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataGenericPackage material_package;
GST_DEBUG_OBJECT (demux,
"Handling metadata material package of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_generic_package_parse (key, &material_package,
&demux->primer, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata material package failed");
return GST_FLOW_ERROR;
}
if (!demux->material_package)
demux->material_package =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataMaterialPackage));
g_array_append_val (demux->material_package, material_package);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_source_package (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataGenericPackage source_package;
GST_DEBUG_OBJECT (demux,
"Handling metadata source package of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_generic_package_parse (key, &source_package,
&demux->primer, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata source package failed");
return GST_FLOW_ERROR;
}
if (!demux->source_package)
demux->source_package =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataSourcePackage));
g_array_append_val (demux->source_package, source_package);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_track (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataTrack track;
GST_DEBUG_OBJECT (demux,
"Handling metadata track of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_track_parse (key, &track, &demux->primer,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata track timecode failed");
return GST_FLOW_ERROR;
}
if (!demux->track)
demux->track = g_array_new (FALSE, FALSE, sizeof (MXFMetadataTrack));
g_array_append_val (demux->track, track);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_sequence (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFMetadataSequence sequence;
GST_DEBUG_OBJECT (demux,
"Handling metadata sequence of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_sequence_parse (key, &sequence,
&demux->primer, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata sequence failed");
return GST_FLOW_ERROR;
}
if (!demux->sequence)
demux->sequence = g_array_new (FALSE, FALSE, sizeof (MXFMetadataSequence));
g_array_append_val (demux->sequence, sequence);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_structural_component (GstMXFDemux * demux,
const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataStructuralComponent component;
GST_DEBUG_OBJECT (demux,
"Handling metadata structural component of size %u"
" at offset %" G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (!mxf_metadata_structural_component_parse (key, &component,
&demux->primer, type, GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata structural component failed");
return GST_FLOW_ERROR;
}
if (!demux->structural_component)
demux->structural_component =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataStructuralComponent));
g_array_append_val (demux->structural_component, component);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_generic_descriptor (GstMXFDemux * demux,
const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataGenericDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata generic descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_generic_descriptor_handle_tag,
(MXFMetadataDescriptorReset) mxf_metadata_generic_descriptor_reset)) {
GST_ERROR_OBJECT (demux, "Parsing metadata generic descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->generic_descriptor)
demux->generic_descriptor =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataGenericDescriptor));
g_array_append_val (demux->generic_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_file_descriptor (GstMXFDemux * demux,
const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataFileDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata file descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_file_descriptor_handle_tag,
(MXFMetadataDescriptorReset) mxf_metadata_file_descriptor_reset)) {
GST_ERROR_OBJECT (demux, "Parsing metadata file descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->file_descriptor)
demux->file_descriptor =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataFileDescriptor));
g_array_append_val (demux->file_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_multiple_descriptor (GstMXFDemux * demux,
const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataMultipleDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata multiple descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_multiple_descriptor_handle_tag,
(MXFMetadataDescriptorReset) mxf_metadata_multiple_descriptor_reset))
{
GST_ERROR_OBJECT (demux, "Parsing metadata multiple descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->multiple_descriptor)
demux->multiple_descriptor =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataMultipleDescriptor));
g_array_append_val (demux->multiple_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_generic_picture_essence_descriptor (GstMXFDemux *
demux, const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataGenericPictureEssenceDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata generic picture essence descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_generic_picture_essence_descriptor_handle_tag,
(MXFMetadataDescriptorReset)
mxf_metadata_generic_picture_essence_descriptor_reset)) {
GST_ERROR_OBJECT (demux,
"Parsing metadata generic picture essence descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->generic_picture_essence_descriptor)
demux->generic_picture_essence_descriptor =
g_array_new (FALSE, FALSE,
sizeof (MXFMetadataGenericPictureEssenceDescriptor));
g_array_append_val (demux->generic_picture_essence_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_cdci_picture_essence_descriptor (GstMXFDemux *
demux, const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataCDCIPictureEssenceDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata CDCI picture essence descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_cdci_picture_essence_descriptor_handle_tag,
(MXFMetadataDescriptorReset)
mxf_metadata_cdci_picture_essence_descriptor_reset)) {
GST_ERROR_OBJECT (demux,
"Parsing metadata CDCI picture essence descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->cdci_picture_essence_descriptor)
demux->cdci_picture_essence_descriptor =
g_array_new (FALSE, FALSE,
sizeof (MXFMetadataCDCIPictureEssenceDescriptor));
g_array_append_val (demux->cdci_picture_essence_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_rgba_picture_essence_descriptor (GstMXFDemux *
demux, const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataRGBAPictureEssenceDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata RGBA picture essence descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_rgba_picture_essence_descriptor_handle_tag,
(MXFMetadataDescriptorReset)
mxf_metadata_rgba_picture_essence_descriptor_reset)) {
GST_ERROR_OBJECT (demux,
"Parsing metadata RGBA picture essence descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->rgba_picture_essence_descriptor)
demux->rgba_picture_essence_descriptor =
g_array_new (FALSE, FALSE,
sizeof (MXFMetadataRGBAPictureEssenceDescriptor));
g_array_append_val (demux->rgba_picture_essence_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_mpeg_video_descriptor (GstMXFDemux * demux,
const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataMPEGVideoDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata MPEG video descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_mpeg_video_descriptor_handle_tag,
(MXFMetadataDescriptorReset)
mxf_metadata_mpeg_video_descriptor_reset)) {
GST_ERROR_OBJECT (demux, "Parsing metadata MPEG video descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->mpeg_video_descriptor)
demux->mpeg_video_descriptor =
g_array_new (FALSE, FALSE, sizeof (MXFMetadataMPEGVideoDescriptor));
g_array_append_val (demux->mpeg_video_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_generic_sound_essence_descriptor (GstMXFDemux *
demux, const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataGenericSoundEssenceDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata generic sound essence descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_generic_sound_essence_descriptor_handle_tag,
(MXFMetadataDescriptorReset)
mxf_metadata_generic_sound_essence_descriptor_reset)) {
GST_ERROR_OBJECT (demux,
"Parsing metadata generic sound essence descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->generic_sound_essence_descriptor)
demux->generic_sound_essence_descriptor =
g_array_new (FALSE, FALSE,
sizeof (MXFMetadataGenericSoundEssenceDescriptor));
g_array_append_val (demux->generic_sound_essence_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_wave_audio_essence_descriptor (GstMXFDemux *
demux, const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataWaveAudioEssenceDescriptor descriptor;
memset (&descriptor, 0, sizeof (descriptor));
GST_DEBUG_OBJECT (demux,
"Handling metadata wave sound essence descriptor of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_descriptor_parse (key,
(MXFMetadataGenericDescriptor *) & descriptor, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer),
(MXFMetadataDescriptorHandleTag)
mxf_metadata_wave_audio_essence_descriptor_handle_tag,
(MXFMetadataDescriptorReset)
mxf_metadata_wave_audio_essence_descriptor_reset)) {
GST_ERROR_OBJECT (demux,
"Parsing metadata wave sound essence descriptor failed");
return GST_FLOW_ERROR;
}
if (!demux->wave_audio_essence_descriptor)
demux->wave_audio_essence_descriptor =
g_array_new (FALSE, FALSE,
sizeof (MXFMetadataWaveAudioEssenceDescriptor));
g_array_append_val (demux->wave_audio_essence_descriptor, descriptor);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata_locator (GstMXFDemux * demux,
const MXFUL * key, guint16 type, GstBuffer * buffer)
{
MXFMetadataLocator locator;
GST_DEBUG_OBJECT (demux,
"Handling metadata locator of size %u"
" at offset %" G_GUINT64_FORMAT " with type 0x%04d",
GST_BUFFER_SIZE (buffer), demux->offset, type);
if (!mxf_metadata_locator_parse (key, &locator, &demux->primer,
type, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing metadata locator failed");
return GST_FLOW_ERROR;
}
if (!demux->locator)
demux->locator = g_array_new (FALSE, FALSE, sizeof (MXFMetadataLocator));
g_array_append_val (demux->locator, locator);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_header_metadata_resolve_references (GstMXFDemux * demux)
{
guint i, j, k;
GstFlowReturn ret = GST_FLOW_OK;
GST_DEBUG_OBJECT (demux, "Resolve metadata references");
demux->update_metadata = FALSE;
if (demux->partition.closed && demux->partition.complete)
demux->final_metadata = TRUE;
/* Fill in demux->descriptor */
demux->descriptor = g_ptr_array_new ();
if (demux->generic_descriptor) {
for (i = 0; i < demux->generic_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->generic_descriptor,
MXFMetadataGenericDescriptor, i));
}
}
if (demux->file_descriptor) {
for (i = 0; i < demux->file_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->file_descriptor, MXFMetadataFileDescriptor,
i));
}
}
if (demux->generic_picture_essence_descriptor) {
for (i = 0; i < demux->generic_picture_essence_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->generic_picture_essence_descriptor,
MXFMetadataGenericPictureEssenceDescriptor, i));
}
}
if (demux->cdci_picture_essence_descriptor) {
for (i = 0; i < demux->cdci_picture_essence_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->cdci_picture_essence_descriptor,
MXFMetadataCDCIPictureEssenceDescriptor, i));
}
}
if (demux->rgba_picture_essence_descriptor) {
for (i = 0; i < demux->rgba_picture_essence_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->rgba_picture_essence_descriptor,
MXFMetadataRGBAPictureEssenceDescriptor, i));
}
}
if (demux->mpeg_video_descriptor) {
for (i = 0; i < demux->mpeg_video_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->mpeg_video_descriptor,
MXFMetadataMPEGVideoDescriptor, i));
}
}
if (demux->generic_sound_essence_descriptor) {
for (i = 0; i < demux->generic_sound_essence_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->generic_sound_essence_descriptor,
MXFMetadataGenericSoundEssenceDescriptor, i));
}
}
if (demux->wave_audio_essence_descriptor) {
for (i = 0; i < demux->wave_audio_essence_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->wave_audio_essence_descriptor,
MXFMetadataWaveAudioEssenceDescriptor, i));
}
}
if (demux->multiple_descriptor) {
for (i = 0; i < demux->multiple_descriptor->len; i++) {
g_ptr_array_add (demux->descriptor,
&g_array_index (demux->multiple_descriptor,
MXFMetadataMultipleDescriptor, i));
}
}
/* Fill in demux->package */
demux->package = g_ptr_array_new ();
if (demux->material_package) {
for (i = 0; i < demux->material_package->len; i++) {
g_ptr_array_add (demux->package, &g_array_index (demux->material_package,
MXFMetadataGenericPackage, i));
}
}
if (demux->source_package) {
for (i = 0; i < demux->source_package->len; i++) {
g_ptr_array_add (demux->package, &g_array_index (demux->source_package,
MXFMetadataGenericPackage, i));
}
}
/* Multiple descriptor */
if (demux->multiple_descriptor && demux->descriptor) {
for (i = 0; i < demux->multiple_descriptor->len; i++) {
MXFMetadataMultipleDescriptor *d =
&g_array_index (demux->multiple_descriptor,
MXFMetadataMultipleDescriptor, i);
d->sub_descriptors =
g_new0 (MXFMetadataGenericDescriptor *, d->n_sub_descriptors);
for (j = 0; j < d->n_sub_descriptors; j++) {
for (k = 0; k < demux->descriptor->len; k++) {
MXFMetadataGenericDescriptor *e =
g_ptr_array_index (demux->descriptor, k);
if (mxf_ul_is_equal (&d->sub_descriptors_uids[j], &e->instance_uid)) {
d->sub_descriptors[j] = e;
break;
}
}
}
}
}
/* See SMPTE 377M 8.4 */
/* Preface */
if (demux->package) {
for (i = 0; i < demux->package->len; i++) {
MXFMetadataGenericPackage *package =
g_ptr_array_index (demux->package, i);
if (mxf_ul_is_equal (&demux->preface.primary_package_uid,
&package->instance_uid)) {
demux->preface.primary_package = package;
break;
}
}
}
demux->preface.identifications =
g_new0 (MXFMetadataIdentification *, demux->preface.n_identifications);
if (demux->identification) {
for (i = 0; i < demux->identification->len; i++) {
MXFMetadataIdentification *identification =
&g_array_index (demux->identification,
MXFMetadataIdentification, i);
for (j = 0; j < demux->preface.n_identifications; j++) {
if (mxf_ul_is_equal (&demux->preface.identifications_uids[j],
&identification->instance_uid)) {
demux->preface.identifications[j] = identification;
break;
}
}
}
}
if (!mxf_ul_is_equal (&demux->preface.content_storage_uid,
&demux->content_storage.instance_uid)) {
GST_ERROR_OBJECT (demux,
"Preface content storage UID not equal to actual content storage instance uid");
ret = GST_FLOW_ERROR;
goto error;
}
demux->preface.content_storage = &demux->content_storage;
/* TODO: dm_schemes */
/* Content storage */
demux->content_storage.packages =
g_new0 (MXFMetadataGenericPackage *, demux->content_storage.n_packages);
if (demux->package) {
for (i = 0; i < demux->package->len; i++) {
MXFMetadataGenericPackage *package =
g_ptr_array_index (demux->package, i);
for (j = 0; j < demux->content_storage.n_packages; j++) {
if (mxf_ul_is_equal (&demux->content_storage.packages_uids[j],
&package->instance_uid)) {
demux->content_storage.packages[j] = package;
break;
}
}
}
}
demux->content_storage.essence_container_data =
g_new0 (MXFMetadataEssenceContainerData *,
demux->content_storage.n_essence_container_data);
if (demux->essence_container_data) {
for (i = 0; i < demux->essence_container_data->len; i++) {
MXFMetadataEssenceContainerData *data =
&g_array_index (demux->essence_container_data,
MXFMetadataEssenceContainerData, i);
for (j = 0; j < demux->content_storage.n_essence_container_data; j++) {
if (mxf_ul_is_equal (&demux->content_storage.
essence_container_data_uids[j], &data->instance_uid)) {
demux->content_storage.essence_container_data[j] = data;
break;
}
}
}
}
/* Essence container data */
if (demux->package && demux->essence_container_data) {
for (i = 0; i < demux->package->len; i++) {
MXFMetadataGenericPackage *package =
g_ptr_array_index (demux->package, i);
for (j = 0; j < demux->essence_container_data->len; j++) {
MXFMetadataEssenceContainerData *data =
&g_array_index (demux->essence_container_data,
MXFMetadataEssenceContainerData, j);
if (mxf_umid_is_equal (&data->linked_package_uid,
&package->package_uid)) {
data->linked_package = package;
break;
}
}
}
}
/* Generic package */
if (demux->package) {
for (i = 0; i < demux->package->len; i++) {
MXFMetadataGenericPackage *package =
g_ptr_array_index (demux->package, i);
package->tracks = g_new0 (MXFMetadataTrack *, package->n_tracks);
if (demux->track) {
for (j = 0; j < package->n_tracks; j++) {
for (k = 0; k < demux->track->len; k++) {
MXFMetadataTrack *track =
&g_array_index (demux->track, MXFMetadataTrack, k);
if (mxf_ul_is_equal (&package->tracks_uids[j],
&track->instance_uid)) {
package->tracks[j] = track;
break;
}
}
}
}
/* Resolve descriptors */
if (package->n_descriptors > 0 && demux->descriptor) {
MXFMetadataGenericDescriptor *d = NULL;
for (j = 0; j < demux->descriptor->len; j++) {
MXFMetadataGenericDescriptor *descriptor =
g_ptr_array_index (demux->descriptor, j);
if (mxf_ul_is_equal (&package->descriptors_uid,
&descriptor->instance_uid)) {
d = descriptor;
break;
}
}
if (d && d->type == MXF_METADATA_MULTIPLE_DESCRIPTOR) {
MXFMetadataMultipleDescriptor *e =
(MXFMetadataMultipleDescriptor *) d;
package->n_descriptors = e->n_sub_descriptors;
package->descriptors =
g_new0 (MXFMetadataGenericDescriptor *, e->n_sub_descriptors);
/* These are already resolved */
for (j = 0; j < e->n_sub_descriptors; j++)
package->descriptors[j] = e->sub_descriptors[j];
} else {
package->n_descriptors = 1;
package->descriptors = g_new0 (MXFMetadataGenericDescriptor *, 1);
package->descriptors[0] = d;
}
}
if (package->tracks && package->descriptors) {
for (j = 0; j < package->n_tracks; j++) {
MXFMetadataTrack *track = package->tracks[j];
guint n_descriptor = 0;
if (!track)
continue;
for (k = 0; k < package->n_descriptors; k++) {
MXFMetadataGenericDescriptor *d = package->descriptors[k];
MXFMetadataFileDescriptor *e;
if (!d || !d->is_file_descriptor)
continue;
e = (MXFMetadataFileDescriptor *) d;
if (e->linked_track_id == track->track_id)
n_descriptor++;
}
track->n_descriptor = n_descriptor;
track->descriptor =
g_new0 (MXFMetadataFileDescriptor *, n_descriptor);
n_descriptor = 0;
for (k = 0; k < package->n_descriptors; k++) {
MXFMetadataGenericDescriptor *d = package->descriptors[k];
MXFMetadataFileDescriptor *e;
if (!d || !d->is_file_descriptor)
continue;
e = (MXFMetadataFileDescriptor *) d;
if (e->linked_track_id == track->track_id)
track->descriptor[n_descriptor++] = e;
}
}
}
}
}
/* Tracks */
if (demux->track && demux->sequence) {
for (i = 0; i < demux->track->len; i++) {
MXFMetadataTrack *track =
&g_array_index (demux->track, MXFMetadataTrack, i);
for (j = 0; j < demux->sequence->len; j++) {
MXFMetadataSequence *sequence =
&g_array_index (demux->sequence, MXFMetadataSequence,
i);
if (mxf_ul_is_equal (&track->sequence_uid, &sequence->instance_uid)) {
track->sequence = sequence;
break;
}
}
}
}
/* Sequences */
if (demux->sequence) {
for (i = 0; i < demux->sequence->len; i++) {
MXFMetadataSequence *sequence =
&g_array_index (demux->sequence, MXFMetadataSequence, i);
sequence->structural_components =
g_new0 (MXFMetadataStructuralComponent *,
sequence->n_structural_components);
if (demux->structural_component) {
for (j = 0; j < sequence->n_structural_components; j++) {
for (k = 0; k < demux->structural_component->len; k++) {
MXFMetadataStructuralComponent *component =
&g_array_index (demux->structural_component,
MXFMetadataStructuralComponent, k);
if (mxf_ul_is_equal (&sequence->structural_components_uids[j],
&component->instance_uid)) {
sequence->structural_components[j] = component;
break;
}
}
}
}
}
}
/* Source clips */
if (demux->structural_component && demux->source_package) {
for (i = 0; i < demux->structural_component->len; i++) {
MXFMetadataStructuralComponent *component =
&g_array_index (demux->structural_component,
MXFMetadataStructuralComponent, i);
if (component->type != MXF_METADATA_SOURCE_CLIP)
continue;
for (j = 0; j < demux->source_package->len; j++) {
MXFMetadataGenericPackage *package =
&g_array_index (demux->source_package, MXFMetadataGenericPackage,
j);
if (mxf_umid_is_equal (&component->source_clip.source_package_id,
&package->package_uid)) {
component->source_clip.source_package = package;
break;
}
}
}
}
/* Generic descriptors */
if (demux->descriptor) {
for (i = 0; i < demux->descriptor->len; i++) {
MXFMetadataGenericDescriptor *descriptor =
g_ptr_array_index (demux->descriptor, i);
descriptor->locators =
g_new0 (MXFMetadataLocator *, descriptor->n_locators);
if (demux->locator) {
for (j = 0; j < descriptor->n_locators; j++) {
for (k = 0; k < demux->locator->len; k++) {
MXFMetadataLocator *locator =
&g_array_index (demux->locator, MXFMetadataLocator,
k);
if (mxf_ul_is_equal (&descriptor->locators_uids[j],
&locator->instance_uid)) {
descriptor->locators[j] = locator;
break;
}
}
}
}
}
}
/* Mark packages as material, top-level source and source */
if (demux->material_package) {
for (i = 0; i < demux->material_package->len; i++) {
MXFMetadataGenericPackage *package =
&g_array_index (demux->material_package, MXFMetadataGenericPackage,
i);
package->type = MXF_METADATA_GENERIC_PACKAGE_MATERIAL;
for (j = 0; j < package->n_tracks; j++) {
MXFMetadataTrack *track = package->tracks[j];
MXFMetadataSequence *sequence;
if (!track || !track->sequence)
continue;
sequence = track->sequence;
for (k = 0; k < sequence->n_structural_components; k++) {
MXFMetadataStructuralComponent *component =
sequence->structural_components[k];
if (!component || component->type != MXF_METADATA_SOURCE_CLIP
|| !component->source_clip.source_package)
continue;
component->source_clip.source_package->type =
MXF_METADATA_GENERIC_PACKAGE_TOP_LEVEL_SOURCE;
}
}
}
}
/* Store, for every package, the number of timestamp, metadata, essence and other tracks */
if (demux->package) {
for (i = 0; i < demux->package->len; i++) {
MXFMetadataGenericPackage *package =
g_ptr_array_index (demux->package, i);
if (!package->tracks || package->n_tracks == 0)
continue;
for (j = 0; j < package->n_tracks; j++) {
MXFMetadataTrack *track = package->tracks[j];
MXFMetadataSequence *sequence;
MXFMetadataTrackType type = MXF_METADATA_TRACK_UNKNOWN;
if (!track || !track->sequence)
continue;
sequence = track->sequence;
if (mxf_ul_is_zero (&sequence->data_definition)
&& sequence->structural_components) {
for (k = 0; k < sequence->n_structural_components; k++) {
MXFMetadataStructuralComponent *component =
sequence->structural_components[k];
if (!component || mxf_ul_is_zero (&component->data_definition))
continue;
type =
mxf_metadata_track_identifier_parse
(&component->data_definition);
break;
}
} else {
type =
mxf_metadata_track_identifier_parse (&sequence->data_definition);
}
if (type == MXF_METADATA_TRACK_UNKNOWN)
continue;
else if ((type & 0xf0) == 0x10)
package->n_timecode_tracks++;
else if ((type & 0xf0) == 0x20)
package->n_metadata_tracks++;
else if ((type & 0xf0) == 0x30)
package->n_essence_tracks++;
else if ((type & 0xf0) == 0x40)
package->n_other_tracks++;
}
}
}
return ret;
error:
return ret;
}
static GstFlowReturn
gst_mxf_demux_handle_header_metadata_update_streams (GstMXFDemux * demux)
{
MXFMetadataGenericPackage *current_package = NULL;
guint i, j, k;
gboolean first_run;
GST_DEBUG_OBJECT (demux, "Updating streams");
choose_package:
/* If no package was selected, select the first material package */
if (mxf_umid_is_zero (&demux->current_package_uid)
&& !demux->material_package) {
GST_ERROR_OBJECT (demux, "No material package");
return GST_FLOW_ERROR;
} else if (mxf_umid_is_zero (&demux->current_package_uid)) {
MXFMetadataGenericPackage *p =
(MXFMetadataGenericPackage *) demux->material_package->data;
memcpy (&demux->current_package_uid, &p->package_uid, 32);
current_package = p;
if (demux->src) {
for (i = 0; i < demux->src->len; i++) {
GstMXFPad *pad = g_ptr_array_index (demux->src, i);
gst_element_remove_pad (GST_ELEMENT_CAST (demux), GST_PAD_CAST (pad));
gst_object_unref (pad);
}
g_ptr_array_free (demux->src, TRUE);
demux->src = NULL;
}
}
if (!current_package && demux->package) {
for (i = 0; i < demux->package->len; i++) {
MXFMetadataGenericPackage *p = g_ptr_array_index (demux->package, i);
if (mxf_umid_is_equal (&p->package_uid, &demux->current_package_uid)) {
current_package = p;
break;
}
}
}
if (!current_package) {
GST_WARNING_OBJECT (demux,
"Selected package not found in header metadata, choosing the first best");
memset (&demux->current_package_uid, 0, sizeof (MXFUMID));
goto choose_package;
}
if (current_package->type == MXF_METADATA_GENERIC_PACKAGE_SOURCE) {
GST_WARNING_OBJECT (demux,
"Selected package is not a material package or top-level source package, choosing the first best");
memset (&demux->current_package_uid, 0, sizeof (MXFUMID));
goto choose_package;
}
if (!current_package->tracks) {
GST_ERROR_OBJECT (demux, "Current package has no (resolved) tracks");
return GST_FLOW_ERROR;
} else if (!current_package->n_essence_tracks) {
GST_ERROR_OBJECT (demux, "Current package has no essence tracks");
return GST_FLOW_ERROR;
}
first_run = (demux->src == NULL);
demux->current_package = current_package;
for (i = 0; i < current_package->n_tracks; i++) {
MXFMetadataTrack *track = current_package->tracks[i];
MXFMetadataTrackType track_type = MXF_METADATA_TRACK_UNKNOWN;
MXFMetadataSequence *sequence;
MXFMetadataStructuralComponent *component = NULL;
MXFMetadataGenericPackage *source_package = NULL;
MXFMetadataTrack *source_track = NULL;
GstMXFPad *pad = NULL;
GstCaps *caps = NULL;
GST_DEBUG_OBJECT (demux, "Handling track %u", i);
if (!track) {
GST_WARNING_OBJECT (demux, "Unresolved track");
continue;
} else if (!track->sequence) {
GST_WARNING_OBJECT (demux, "Track with no sequence");
continue;
}
sequence = track->sequence;
if (current_package->type == MXF_METADATA_GENERIC_PACKAGE_TOP_LEVEL_SOURCE) {
source_package = current_package;
source_track = track;
}
track_type =
mxf_metadata_track_identifier_parse (&sequence->data_definition);
/* TODO: handle multiple components, see SMPTE 377M page 37 */
if (sequence->structural_components && sequence->structural_components[0]) {
component = sequence->structural_components[0];
if (track_type == MXF_METADATA_TRACK_UNKNOWN)
track_type =
mxf_metadata_track_identifier_parse (&component->data_definition);
if (!source_package && component->type == MXF_METADATA_SOURCE_CLIP
&& component->source_clip.source_package
&& component->source_clip.source_package->type ==
MXF_METADATA_GENERIC_PACKAGE_TOP_LEVEL_SOURCE
&& component->source_clip.source_package->tracks) {
source_package = component->source_clip.source_package;
for (k = 0; k < source_package->n_tracks; k++) {
MXFMetadataTrack *tmp = source_package->tracks[k];
if (tmp->track_id == component->source_clip.source_track_id) {
source_track = tmp;
break;
}
}
}
}
if (track_type && (track_type & 0xf0) != 0x30) {
GST_DEBUG_OBJECT (demux, "No essence track");
continue;
}
if (!source_package || track_type == MXF_METADATA_TRACK_UNKNOWN
|| !source_track || !component) {
GST_WARNING_OBJECT (demux,
"No source package or track type for track found");
continue;
}
if (!source_package->descriptors) {
GST_WARNING_OBJECT (demux, "Source package has no descriptors");
continue;
}
if (!source_track->descriptor) {
GST_WARNING_OBJECT (demux, "No descriptor found for track");
continue;
}
if (demux->src && demux->src->len > 0) {
/* Find pad from track_id */
for (j = 0; j < demux->src->len; j++) {
GstMXFPad *tmp = g_ptr_array_index (demux->src, j);
if (tmp->track_id == track->track_id) {
pad = tmp;
break;
}
}
}
if (!pad && first_run) {
GstPadTemplate *templ;
gchar *pad_name;
switch (track_type) {
case MXF_METADATA_TRACK_PICTURE_ESSENCE:
templ =
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (demux),
"video_%u");
pad_name = g_strdup_printf ("video_%u", source_track->track_id);
break;
case MXF_METADATA_TRACK_SOUND_ESSENCE:
templ =
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (demux),
"audio_%u");
pad_name = g_strdup_printf ("audio_%u", source_track->track_id);
break;
case MXF_METADATA_TRACK_DATA_ESSENCE:
templ =
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (demux),
"data_%u");
pad_name = g_strdup_printf ("data_%u", source_track->track_id);
break;
default:
g_assert_not_reached ();
break;
}
g_assert (templ != NULL);
/* Create pad */
pad = (GstMXFPad *) g_object_new (GST_TYPE_MXF_PAD,
"name", pad_name, "direction", GST_PAD_SRC, "template", templ, NULL);
pad->need_segment = TRUE;
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->track_id;
pad->track_type = track_type;
pad->material_package = current_package;
pad->material_track = track;
pad->current_material_component = 0;
pad->component = component;
pad->source_package = source_package;
pad->source_track = source_track;
pad->handle_essence_element = NULL;
g_free (pad->mapping_data);
pad->mapping_data = NULL;
switch (track_type) {
case MXF_METADATA_TRACK_PICTURE_ESSENCE:
if (mxf_is_mpeg_video_essence_track (source_track))
caps =
mxf_mpeg_video_create_caps (source_package, source_track,
&pad->tags, &pad->handle_essence_element, &pad->mapping_data);
else if (mxf_is_dv_dif_essence_track (source_track))
caps =
mxf_dv_dif_create_caps (source_package, source_track,
&pad->tags, &pad->handle_essence_element, &pad->mapping_data);
break;
case MXF_METADATA_TRACK_SOUND_ESSENCE:
if (mxf_is_aes_bwf_essence_track (source_track))
caps =
mxf_aes_bwf_create_caps (source_package, source_track, &pad->tags,
&pad->handle_essence_element, &pad->mapping_data);
else if (mxf_is_dv_dif_essence_track (source_track))
caps =
mxf_dv_dif_create_caps (source_package, source_track,
&pad->tags, &pad->handle_essence_element, &pad->mapping_data);
break;
case MXF_METADATA_TRACK_DATA_ESSENCE:
if (mxf_is_dv_dif_essence_track (source_track))
caps =
mxf_dv_dif_create_caps (source_package, source_track,
&pad->tags, &pad->handle_essence_element, &pad->mapping_data);
break;
default:
g_assert_not_reached ();
break;
}
if (!caps) {
GST_WARNING_OBJECT (demux, "No caps created, ignoring stream");
gst_object_unref (pad);
continue;
}
GST_DEBUG_OBJECT (demux, "Created caps %" GST_PTR_FORMAT, caps);
if (pad->caps && !gst_caps_is_equal (pad->caps, caps)) {
gst_pad_set_caps (GST_PAD_CAST (pad), caps);
gst_caps_replace (&pad->caps, gst_caps_ref (caps));
} else if (!pad->caps) {
gst_pad_set_caps (GST_PAD_CAST (pad), caps);
pad->caps = gst_caps_ref (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);
gst_element_add_pad (GST_ELEMENT_CAST (demux), gst_object_ref (pad));
if (!demux->src)
demux->src = g_ptr_array_new ();
g_ptr_array_add (demux->src, pad);
}
gst_caps_unref (caps);
}
gst_element_no_more_pads (GST_ELEMENT_CAST (demux));
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_metadata (GstMXFDemux * demux, const MXFUL * key,
GstBuffer * buffer)
{
guint16 type;
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%04d", GST_BUFFER_SIZE (buffer),
demux->offset, type);
if (G_UNLIKELY (!demux->partition.valid)) {
GST_ERROR_OBJECT (demux, "Partition pack doesn't exist");
return GST_FLOW_ERROR;
}
if (G_UNLIKELY (!demux->primer.valid)) {
GST_ERROR_OBJECT (demux, "Primer pack doesn't exists");
return GST_FLOW_ERROR;
}
if (type != MXF_METADATA_PREFACE && !demux->update_metadata) {
GST_DEBUG_OBJECT (demux,
"Skipping parsing of metadata because it's older than what we have");
return GST_FLOW_OK;
}
switch (type) {
case MXF_METADATA_PREFACE:
ret = gst_mxf_demux_handle_metadata_preface (demux, key, buffer);
break;
case MXF_METADATA_IDENTIFICATION:
ret = gst_mxf_demux_handle_metadata_identification (demux, key, buffer);
break;
case MXF_METADATA_CONTENT_STORAGE:
ret = gst_mxf_demux_handle_metadata_content_storage (demux, key, buffer);
break;
case MXF_METADATA_ESSENCE_CONTAINER_DATA:
ret =
gst_mxf_demux_handle_metadata_essence_container_data (demux,
key, buffer);
break;
case MXF_METADATA_MATERIAL_PACKAGE:
ret = gst_mxf_demux_handle_metadata_material_package (demux, key, buffer);
break;
case MXF_METADATA_SOURCE_PACKAGE:
ret = gst_mxf_demux_handle_metadata_source_package (demux, key, buffer);
break;
case MXF_METADATA_TRACK:
ret = gst_mxf_demux_handle_metadata_track (demux, key, buffer);
break;
case MXF_METADATA_SEQUENCE:
ret = gst_mxf_demux_handle_metadata_sequence (demux, key, buffer);
break;
case MXF_METADATA_TIMECODE_COMPONENT:
case MXF_METADATA_SOURCE_CLIP:
ret =
gst_mxf_demux_handle_metadata_structural_component (demux,
key, type, buffer);
break;
case MXF_METADATA_GENERIC_DATA_ESSENCE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_generic_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_FILE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_file_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_generic_picture_essence_descriptor
(demux, key, type, buffer);
break;
case MXF_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_cdci_picture_essence_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_RGBA_PICTURE_ESSENCE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_rgba_picture_essence_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_MPEG_VIDEO_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_mpeg_video_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_generic_sound_essence_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_MULTIPLE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_multiple_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_WAVE_AUDIO_ESSENCE_DESCRIPTOR:
ret =
gst_mxf_demux_handle_metadata_wave_audio_essence_descriptor (demux,
key, type, buffer);
break;
case MXF_METADATA_NETWORK_LOCATOR:
case MXF_METADATA_TEXT_LOCATOR:
ret = gst_mxf_demux_handle_metadata_locator (demux, key, type, buffer);
break;
default:
GST_WARNING_OBJECT (demux,
"Unknown or unhandled metadata type 0x%04x", type);
break;
}
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);
/* TODO: parse this */
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
GstFlowReturn ret = GST_FLOW_OK;
guint32 track_number;
guint i, j;
GstMXFPad *pad = NULL;
GstBuffer *inbuf;
GstBuffer *outbuf = NULL;
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_package) {
GST_ERROR_OBJECT (demux, "No package selected yet");
return GST_FLOW_ERROR;
}
if (!demux->src || demux->src->len == 0) {
GST_ERROR_OBJECT (demux, "No streams created yet");
return GST_FLOW_ERROR;
}
track_number = GST_READ_UINT32_BE (&key->u[12]);
for (i = 0; i < demux->src->len; i++) {
GstMXFPad *p = g_ptr_array_index (demux->src, i);
if (p->source_track->track_number == track_number ||
(p->source_track->track_number == 0 &&
demux->src->len == 1 &&
demux->current_package->n_essence_tracks == 1)) {
if (demux->essence_container_data) {
for (j = 0; j < demux->essence_container_data->len; j++) {
MXFMetadataEssenceContainerData *edata =
&g_array_index (demux->essence_container_data,
MXFMetadataEssenceContainerData, j);
if (p->source_package == edata->linked_package
&& demux->partition.body_sid == edata->body_sid) {
pad = p;
break;
}
}
} else {
pad = p;
}
if (pad)
break;
}
}
if (!pad) {
GST_WARNING_OBJECT (demux, "No corresponding pad found");
return GST_FLOW_OK;
}
/* TODO: Use a better start value */
if (pad->need_segment) {
gst_pad_push_event (GST_PAD_CAST (pad),
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0));
pad->need_segment = FALSE;
}
/* Create subbuffer to be able to change metadata */
inbuf = gst_buffer_create_sub (buffer, 0, GST_BUFFER_SIZE (buffer));
GST_BUFFER_TIMESTAMP (inbuf) =
gst_util_uint64_scale (pad->essence_element_count +
pad->material_track->origin,
GST_SECOND * pad->material_track->edit_rate.d,
pad->material_track->edit_rate.n);
GST_BUFFER_DURATION (inbuf) =
gst_util_uint64_scale (GST_SECOND, pad->material_track->edit_rate.d,
pad->material_track->edit_rate.n);
GST_BUFFER_OFFSET (inbuf) = pad->essence_element_count;
GST_BUFFER_OFFSET_END (inbuf) = GST_BUFFER_OFFSET_NONE;
gst_buffer_set_caps (inbuf, pad->caps);
if (pad->handle_essence_element) {
/* Takes ownership of inbuf */
ret =
pad->handle_essence_element (key, inbuf, pad->caps, pad->source_package,
pad->source_track, pad->component, pad->mapping_data, &outbuf);
inbuf = NULL;
} else {
outbuf = inbuf;
inbuf = NULL;
ret = GST_FLOW_OK;
}
pad->essence_element_count++;
if (ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (demux, "Failed to handle essence element");
if (outbuf) {
gst_buffer_unref (outbuf);
outbuf = NULL;
}
}
if (outbuf) {
ret = gst_pad_push (GST_PAD_CAST (pad), outbuf);
ret = gst_mxf_demux_combine_flows (demux, pad, ret);
}
return ret;
}
static GstFlowReturn
gst_mxf_demux_handle_random_index_pack (GstMXFDemux * demux, const MXFUL * key,
GstBuffer * buffer)
{
GST_DEBUG_OBJECT (demux,
"Handling random index pack of size %u at offset %"
G_GUINT64_FORMAT, GST_BUFFER_SIZE (buffer), demux->offset);
if (demux->partition_index) {
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->partition_index)) {
GST_ERROR_OBJECT (demux, "Parsing random index pack failed");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_demux_handle_index_table_segment (GstMXFDemux * demux,
const MXFUL * key, GstBuffer * buffer)
{
MXFIndexTableSegment segment;
memset (&segment, 0, sizeof (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->primer.valid) {
GST_WARNING_OBJECT (demux, "Invalid primer pack");
return GST_FLOW_OK;
}
if (!mxf_index_table_segment_parse (key, &segment, &demux->primer,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
GST_ERROR_OBJECT (demux, "Parsing index table segment failed");
return GST_FLOW_ERROR;
}
if (!demux->index_table)
demux->index_table =
g_array_new (FALSE, FALSE, sizeof (MXFIndexTableSegment));
g_array_append_val (demux->index_table, 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;
}
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;
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);
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");
return;
} else if (pack_size > filesize - 20) {
GST_DEBUG_OBJECT (demux, "Too large pack size");
return;
}
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;
}
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);
if (!demux->partition_index)
demux->partition_index =
g_array_new (FALSE, FALSE, sizeof (MXFRandomIndexPackEntry));
}
static void
gst_mxf_demux_parse_footer_metadata (GstMXFDemux * demux)
{
MXFPartitionPack partition;
MXFPrimerPack primer;
guint64 offset, old_offset = demux->offset;
MXFUL key;
GstBuffer *buffer = NULL;
guint read = 0;
GstFlowReturn ret = GST_FLOW_OK;
memcpy (&partition, &demux->partition, sizeof (MXFPartitionPack));
memcpy (&primer, &demux->primer, sizeof (MXFPrimerPack));
memset (&demux->partition, 0, sizeof (MXFPartitionPack));
memset (&demux->primer, 0, sizeof (MXFPrimerPack));
gst_mxf_demux_reset_metadata (demux);
offset =
demux->header_partition_pack_offset + demux->footer_partition_pack_offset;
next_try:
mxf_partition_pack_reset (&demux->partition);
mxf_primer_pack_reset (&demux->primer);
ret = gst_mxf_demux_pull_klv_packet (demux, offset, &key, &buffer, &read);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto out;
if (!mxf_is_partition_pack (&key))
goto out;
if (!mxf_partition_pack_parse (&key, &demux->partition,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer)))
goto out;
offset += read;
gst_buffer_unref (buffer);
buffer = NULL;
if (demux->partition.header_byte_count == 0) {
if (demux->partition.prev_partition == 0
|| demux->partition.this_partition == 0)
goto out;
offset =
demux->header_partition_pack_offset + demux->partition.prev_partition;
goto next_try;
}
while (TRUE) {
ret = gst_mxf_demux_pull_klv_packet (demux, offset, &key, &buffer, &read);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
offset =
demux->header_partition_pack_offset + demux->partition.prev_partition;
goto next_try;
}
if (mxf_is_fill (&key)) {
offset += read;
gst_buffer_unref (buffer);
buffer = NULL;
} else if (mxf_is_primer_pack (&key)) {
if (!mxf_primer_pack_parse (&key, &demux->primer,
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer))) {
offset += read;
gst_buffer_unref (buffer);
buffer = NULL;
offset =
demux->header_partition_pack_offset +
demux->partition.prev_partition;
goto next_try;
}
offset += read;
gst_buffer_unref (buffer);
buffer = NULL;
break;
} else {
gst_buffer_unref (buffer);
buffer = NULL;
offset =
demux->header_partition_pack_offset + demux->partition.prev_partition;
goto next_try;
}
}
/* parse metadata */
while (TRUE) {
ret = gst_mxf_demux_pull_klv_packet (demux, offset, &key, &buffer, &read);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
offset =
demux->header_partition_pack_offset + demux->partition.prev_partition;
goto next_try;
}
if (mxf_is_metadata (&key)) {
ret = gst_mxf_demux_handle_metadata (demux, &key, buffer);
offset += read;
gst_buffer_unref (buffer);
buffer = NULL;
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
gst_mxf_demux_reset_metadata (demux);
offset =
demux->header_partition_pack_offset +
demux->partition.prev_partition;
goto next_try;
}
} else if (mxf_is_fill (&key)) {
offset += read;
gst_buffer_unref (buffer);
buffer = NULL;
} else {
break;
}
}
/* resolve references etc */
if (gst_mxf_demux_handle_header_metadata_resolve_references (demux) !=
GST_FLOW_OK
|| gst_mxf_demux_handle_header_metadata_update_streams (demux) !=
GST_FLOW_OK) {
offset =
demux->header_partition_pack_offset + demux->partition.prev_partition;
goto next_try;
}
demux->final_metadata = TRUE;
out:
if (buffer)
gst_buffer_unref (buffer);
mxf_partition_pack_reset (&demux->partition);
mxf_primer_pack_reset (&demux->primer);
memcpy (&demux->partition, &partition, sizeof (MXFPartitionPack));
memcpy (&demux->primer, &primer, sizeof (MXFPrimerPack));
demux->offset = old_offset;
}
static GstFlowReturn
gst_mxf_demux_handle_klv_packet (GstMXFDemux * demux, const MXFUL * key,
GstBuffer * buffer)
{
gchar key_str[48];
GstFlowReturn ret = GST_FLOW_OK;
/* In pull mode try to get the last metadata */
if (demux->pull_footer_metadata && !demux->final_metadata
&& demux->random_access && demux->partition.valid
&& demux->partition.type == MXF_PARTITION_PACK_HEADER
&& (!demux->partition.closed || !demux->partition.complete)
&& demux->footer_partition_pack_offset != 0) {
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;
}
/* TODO: - Pull random index pack from footer partition?
* - Pull all partitions for parsing all index segments and having a complete index
* as first thing. This also will make it possible to use the latest header
* metadata if it's not in the footer partition
*/
if (demux->update_metadata
&& !mxf_timestamp_is_unknown (&demux->preface.last_modified_date)
&& !mxf_is_metadata (key) && !mxf_is_descriptive_metadata (key)
&& !mxf_is_fill (key)) {
if ((ret =
gst_mxf_demux_handle_header_metadata_resolve_references (demux)) !=
GST_FLOW_OK)
goto beach;
if ((ret =
gst_mxf_demux_handle_header_metadata_update_streams (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);
} 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_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)) {
ret =
gst_mxf_demux_handle_generic_container_essence_element (demux, key,
buffer);
} 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));
}
beach:
return ret;
}
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;
ret =
gst_mxf_demux_pull_klv_packet (demux, demux->offset, &key, &buffer,
&read);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto beach;
ret = gst_mxf_demux_handle_klv_packet (demux, &key, buffer);
demux->offset += read;
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;
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;
demux->header_partition_pack_offset = 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 */
if (!demux->partition_index) {
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)) {
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 (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
if (ret == GST_FLOW_UNEXPECTED) {
/* perform EOS logic */
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gint64 stop;
/* 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");
gst_element_post_message (GST_ELEMENT_CAST (demux),
gst_message_new_segment_done (GST_OBJECT_CAST (demux),
GST_FORMAT_TIME, stop));
} else {
/* normal playback, send EOS to all linked pads */
GST_LOG_OBJECT (demux, "Sending EOS, at end of stream");
if (!gst_mxf_demux_push_src_event (demux, gst_event_new_eos ())) {
GST_WARNING_OBJECT (demux, "failed pushing EOS on streams");
}
}
} else {
GST_ELEMENT_ERROR (demux, STREAM, FAILED,
("Internal data stream error."),
("stream stopped, reason %s", reason));
gst_mxf_demux_push_src_event (demux, gst_event_new_eos ());
}
}
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 (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");
demux->offset = GST_BUFFER_OFFSET (inbuf);
}
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_WRONG_STATE;
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;
demux->header_partition_pack_offset = demux->offset;
break;
}
gst_adapter_flush (demux->adapter, 1);
}
}
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);
buffer = gst_adapter_take_buffer (demux->adapter, length);
ret = gst_mxf_demux_handle_klv_packet (demux, &key, buffer);
gst_buffer_unref (buffer);
}
gst_object_unref (demux);
return ret;
}
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:
/* TODO: handle this */
gst_event_unref (event);
ret = FALSE;
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,
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;
GstMXFPad *mxfpad = GST_MXF_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->essence_element_count;
if (format == GST_FORMAT_TIME) {
if (!mxfpad->material_track || mxfpad->material_track->edit_rate.n == 0
|| mxfpad->material_track->edit_rate.d == 0)
goto error;
pos =
gst_util_uint64_scale (pos + mxfpad->material_track->origin,
GST_SECOND * mxfpad->material_track->edit_rate.d,
mxfpad->material_track->edit_rate.n);
}
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;
if (!mxfpad->material_track || !mxfpad->material_track->sequence)
goto error;
duration = mxfpad->material_track->sequence->duration;
if (format == GST_FORMAT_TIME) {
if (mxfpad->material_track->edit_rate.n == 0 ||
mxfpad->material_track->edit_rate.d == 0)
goto error;
duration =
gst_util_uint64_scale (duration,
GST_SECOND * mxfpad->material_track->edit_rate.d,
mxfpad->material_track->edit_rate.n);
}
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;
}
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);
} 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_mxf_demux_flush (demux, TRUE);
ret = gst_mxf_demux_push_src_event (demux, event);
break;
case GST_EVENT_EOS:
if (!gst_mxf_demux_push_src_event (demux, event))
GST_WARNING_OBJECT (pad, "failed pushing EOS on streams");
ret = TRUE;
break;
case GST_EVENT_NEWSEGMENT:
/* TODO: handle this */
gst_event_unref (event);
ret = FALSE;
break;
default:
ret = gst_mxf_demux_push_src_event (demux, event);
break;
}
gst_object_unref (demux);
return ret;
}
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:
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_finalize (GObject * object)
{
GstMXFDemux *demux = GST_MXF_DEMUX (object);
if (demux->adapter) {
g_object_unref (demux->adapter);
demux->adapter = NULL;
}
if (demux->new_seg_event) {
gst_event_unref (demux->new_seg_event);
demux->new_seg_event = NULL;
}
if (demux->close_seg_event) {
gst_event_unref (demux->close_seg_event);
demux->close_seg_event = NULL;
}
if (demux->src) {
g_ptr_array_foreach (demux->src, (GFunc) gst_mxf_demux_remove_pad, demux);
g_ptr_array_foreach (demux->src, (GFunc) gst_object_unref, NULL);
g_ptr_array_free (demux->src, TRUE);
demux->src = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_mxf_demux_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mxf_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&audio_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&video_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&data_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");
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_mxf_demux_finalize);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_mxf_demux_change_state);
}
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->adapter = gst_adapter_new ();
demux->src = g_ptr_array_new ();
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
gst_mxf_demux_reset (demux);
}