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gstreamer/subprojects/gst-plugins-bad/gst/mxf/mxfmux.c

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/* GStreamer
* Copyright (C) 2009 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-mxfmux
* @title: mxfmux
*
* mxfmux muxes different streams into an MXF file.
*
* ## Example launch line
* |[
* gst-launch-1.0 -v filesrc location=/path/to/audio ! decodebin ! queue ! mxfmux name=m ! filesink location=file.mxf filesrc location=/path/to/video ! decodebin ! queue ! m.
* ]| This pipeline muxes an audio and video file into a single MXF file.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include <string.h>
#include "gstmxfelements.h"
#include "mxfmux.h"
#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif
GST_DEBUG_CATEGORY_STATIC (mxfmux_debug);
#define GST_CAT_DEFAULT mxfmux_debug
#define GST_TYPE_MXF_MUX_PAD (gst_mxf_mux_pad_get_type())
#define GST_MXF_MUX_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MXF_MUX_PAD, GstMXFMuxPad))
#define GST_MXF_MUX_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MXF_MUX_PAD, GstMXFMuxPadClass))
#define GST_MXF_MUX_PAD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_MXF_MUX_PAD, GstMXFMuxPadClass))
#define GST_IS_MXF_MUX_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MXF_MUX_PAD))
#define GST_IS_MXF_MUX_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MXF_MUX_PAD))
typedef struct
{
GstAggregatorPad parent;
guint64 pos;
GstClockTime last_timestamp;
MXFMetadataFileDescriptor *descriptor;
GstAdapter *adapter;
gboolean have_complete_edit_unit;
gpointer mapping_data;
const MXFEssenceElementWriter *writer;
MXFEssenceElementWriteFunc write_func;
MXFMetadataSourcePackage *source_package;
MXFMetadataTimelineTrack *source_track;
} GstMXFMuxPad;
typedef struct
{
GstAggregatorPadClass parent_class;
} GstMXFMuxPadClass;
GType gst_mxf_mux_pad_get_type (void);
G_DEFINE_TYPE (GstMXFMuxPad, gst_mxf_mux_pad, GST_TYPE_AGGREGATOR_PAD);
static void
gst_mxf_mux_pad_finalize (GObject * object)
{
GstMXFMuxPad *pad = GST_MXF_MUX_PAD (object);
g_object_unref (pad->adapter);
g_free (pad->mapping_data);
G_OBJECT_CLASS (gst_mxf_mux_pad_parent_class)->finalize (object);
}
static void
gst_mxf_mux_pad_class_init (GstMXFMuxPadClass * klass)
{
GObjectClass *object_class = (GObjectClass *) klass;
object_class->finalize = gst_mxf_mux_pad_finalize;
}
static void
gst_mxf_mux_pad_init (GstMXFMuxPad * pad)
{
pad->adapter = gst_adapter_new ();
}
static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/mxf")
);
enum
{
PROP_0
};
#define gst_mxf_mux_parent_class parent_class
G_DEFINE_TYPE (GstMXFMux, gst_mxf_mux, GST_TYPE_AGGREGATOR);
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (mxfmux, "mxfmux", GST_RANK_PRIMARY,
GST_TYPE_MXF_MUX, mxf_element_init (plugin));
static void gst_mxf_mux_finalize (GObject * object);
static GstFlowReturn gst_mxf_mux_aggregate (GstAggregator * aggregator,
gboolean timeout);
static gboolean gst_mxf_mux_stop (GstAggregator * aggregator);
static gboolean gst_mxf_mux_src_event (GstAggregator * aggregator,
GstEvent * event);
static gboolean gst_mxf_mux_sink_event (GstAggregator * aggregator,
GstAggregatorPad * aggpad, GstEvent * event);
static GstAggregatorPad *gst_mxf_mux_create_new_pad (GstAggregator * aggregator,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_mxf_mux_reset (GstMXFMux * mux);
static GstFlowReturn
gst_mxf_mux_push (GstMXFMux * mux, GstBuffer * buf)
{
guint size = gst_buffer_get_size (buf);
GstFlowReturn ret;
ret = gst_aggregator_finish_buffer (GST_AGGREGATOR (mux), buf);
mux->offset += size;
return ret;
}
static void
gst_mxf_mux_class_init (GstMXFMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstAggregatorClass *gstaggregator_class;
const GstPadTemplate **p;
GST_DEBUG_CATEGORY_INIT (mxfmux_debug, "mxfmux", 0, "MXF muxer");
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstaggregator_class = (GstAggregatorClass *) klass;
gobject_class->finalize = gst_mxf_mux_finalize;
gstaggregator_class->create_new_pad =
GST_DEBUG_FUNCPTR (gst_mxf_mux_create_new_pad);
gstaggregator_class->src_event = GST_DEBUG_FUNCPTR (gst_mxf_mux_src_event);
gstaggregator_class->sink_event = GST_DEBUG_FUNCPTR (gst_mxf_mux_sink_event);
gstaggregator_class->stop = GST_DEBUG_FUNCPTR (gst_mxf_mux_stop);
gstaggregator_class->aggregate = GST_DEBUG_FUNCPTR (gst_mxf_mux_aggregate);
gstaggregator_class->negotiate = NULL;
gst_element_class_add_static_pad_template_with_gtype (gstelement_class,
&src_templ, GST_TYPE_MXF_MUX_PAD);
p = mxf_essence_element_writer_get_pad_templates ();
while (p && *p) {
gst_element_class_add_pad_template (gstelement_class,
(GstPadTemplate *) gst_object_ref (GST_OBJECT (*p)));
p++;
}
gst_element_class_set_static_metadata (gstelement_class, "MXF muxer",
"Codec/Muxer",
"Muxes video/audio streams into a MXF stream",
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
gst_type_mark_as_plugin_api (GST_TYPE_MXF_MUX_PAD, 0);
}
static void
gst_mxf_mux_init (GstMXFMux * mux)
{
mux->index_table = g_array_new (FALSE, FALSE, sizeof (MXFIndexTableSegment));
gst_mxf_mux_reset (mux);
}
static void
gst_mxf_mux_finalize (GObject * object)
{
GstMXFMux *mux = GST_MXF_MUX (object);
gst_mxf_mux_reset (mux);
if (mux->metadata) {
g_hash_table_destroy (mux->metadata);
mux->metadata = NULL;
g_list_free (mux->metadata_list);
mux->metadata_list = NULL;
}
if (mux->index_table) {
gsize n;
for (n = 0; n < mux->index_table->len; ++n)
g_free (g_array_index (mux->index_table, MXFIndexTableSegment,
n).index_entries);
g_array_free (mux->index_table, TRUE);
mux->index_table = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_mxf_mux_reset (GstMXFMux * mux)
{
GList *l;
gsize n;
GST_OBJECT_LOCK (mux);
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
gst_adapter_clear (pad->adapter);
g_free (pad->mapping_data);
pad->mapping_data = NULL;
pad->pos = 0;
pad->last_timestamp = 0;
pad->descriptor = NULL;
pad->have_complete_edit_unit = FALSE;
pad->source_package = NULL;
pad->source_track = NULL;
}
GST_OBJECT_UNLOCK (mux);
mux->state = GST_MXF_MUX_STATE_HEADER;
if (mux->metadata) {
g_hash_table_destroy (mux->metadata);
mux->preface = NULL;
g_list_free (mux->metadata_list);
mux->metadata_list = NULL;
}
mux->metadata = mxf_metadata_hash_table_new ();
mxf_partition_pack_reset (&mux->partition);
mxf_primer_pack_reset (&mux->primer);
memset (&mux->min_edit_rate, 0, sizeof (MXFFraction));
mux->last_gc_timestamp = 0;
mux->last_gc_position = 0;
mux->offset = 0;
if (mux->index_table)
for (n = 0; n < mux->index_table->len; ++n)
g_free (g_array_index (mux->index_table, MXFIndexTableSegment,
n).index_entries);
g_array_set_size (mux->index_table, 0);
mux->current_index_pos = 0;
mux->last_keyframe_pos = 0;
}
static gboolean
gst_mxf_mux_src_event (GstAggregator * aggregator, GstEvent * event)
{
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
/* disable seeking for now */
gst_event_unref (event);
return FALSE;
default:
return GST_AGGREGATOR_CLASS (parent_class)->src_event (aggregator, event);
break;
}
g_assert_not_reached ();
}
static gboolean
gst_mxf_mux_set_caps (GstMXFMux * mux, GstMXFMuxPad * pad, GstCaps * caps)
{
gboolean ret = TRUE;
MXFUUID d_instance_uid = { {0,} };
MXFMetadataFileDescriptor *old_descriptor = pad->descriptor;
GList *l;
GST_DEBUG_OBJECT (pad, "Setting caps %" GST_PTR_FORMAT, caps);
if (old_descriptor) {
memcpy (&d_instance_uid, &MXF_METADATA_BASE (old_descriptor)->instance_uid,
16);
pad->descriptor = NULL;
g_free (pad->mapping_data);
pad->mapping_data = NULL;
}
pad->descriptor =
pad->writer->get_descriptor (GST_PAD_PAD_TEMPLATE (pad), caps,
&pad->write_func, &pad->mapping_data);
if (!pad->descriptor) {
GST_ERROR_OBJECT (mux,
"Couldn't get descriptor for pad '%s' with caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
return FALSE;
}
if (mxf_uuid_is_zero (&d_instance_uid))
mxf_uuid_init (&d_instance_uid, mux->metadata);
memcpy (&MXF_METADATA_BASE (pad->descriptor)->instance_uid, &d_instance_uid,
16);
if (old_descriptor) {
for (l = mux->metadata_list; l; l = l->next) {
MXFMetadataBase *tmp = l->data;
if (mxf_uuid_is_equal (&d_instance_uid, &tmp->instance_uid)) {
l->data = pad->descriptor;
break;
}
}
} else {
mux->metadata_list = g_list_prepend (mux->metadata_list, pad->descriptor);
}
g_hash_table_replace (mux->metadata,
&MXF_METADATA_BASE (pad->descriptor)->instance_uid, pad->descriptor);
if (old_descriptor) {
if (mux->preface && mux->preface->content_storage &&
mux->preface->content_storage->packages) {
guint i, j;
for (i = 0; i < mux->preface->content_storage->n_packages; i++) {
MXFMetadataSourcePackage *package;
if (!MXF_IS_METADATA_SOURCE_PACKAGE (mux->preface->
content_storage->packages[i]))
continue;
package =
MXF_METADATA_SOURCE_PACKAGE (mux->preface->
content_storage->packages[i]);
if (!package->descriptor)
continue;
if (MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (package->descriptor)) {
MXFMetadataMultipleDescriptor *tmp =
MXF_METADATA_MULTIPLE_DESCRIPTOR (package->descriptor);
for (j = 0; j < tmp->n_sub_descriptors; j++) {
if (tmp->sub_descriptors[j] ==
MXF_METADATA_GENERIC_DESCRIPTOR (old_descriptor)) {
tmp->sub_descriptors[j] =
MXF_METADATA_GENERIC_DESCRIPTOR (pad->descriptor);
memcpy (&tmp->sub_descriptors_uids[j], &d_instance_uid, 16);
}
}
} else if (package->descriptor ==
MXF_METADATA_GENERIC_DESCRIPTOR (old_descriptor)) {
package->descriptor =
MXF_METADATA_GENERIC_DESCRIPTOR (pad->descriptor);
memcpy (&package->descriptor_uid, &d_instance_uid, 16);
}
}
}
}
return ret;
}
static gboolean
gst_mxf_mux_sink_event (GstAggregator * aggregator,
GstAggregatorPad * aggpad, GstEvent * event)
{
GstMXFMux *mux = GST_MXF_MUX (aggregator);
gboolean ret = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:
/* TODO: do something with the tags */
break;
case GST_EVENT_CAPS:{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
ret = gst_mxf_mux_set_caps (mux, GST_MXF_MUX_PAD (aggpad), caps);
break;
}
default:
break;
}
/* now GstAggregator can take care of the rest, e.g. EOS */
if (ret)
ret =
GST_AGGREGATOR_CLASS (parent_class)->sink_event (aggregator, aggpad,
event);
return ret;
}
static char *
gst_mxf_mux_create_pad_name (GstPadTemplate * templ, guint id)
{
GString *string;
string = g_string_new (GST_PAD_TEMPLATE_NAME_TEMPLATE (templ));
g_string_truncate (string, string->len - 2);
g_string_append_printf (string, "%u", id);
return g_string_free (string, FALSE);
}
static GstAggregatorPad *
gst_mxf_mux_create_new_pad (GstAggregator * aggregator,
GstPadTemplate * templ, const gchar * pad_name, const GstCaps * caps)
{
GstMXFMux *mux = GST_MXF_MUX (aggregator);
GstMXFMuxPad *pad;
guint pad_number;
gchar *name = NULL;
const MXFEssenceElementWriter *writer;
if (mux->state != GST_MXF_MUX_STATE_HEADER) {
GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
return NULL;
}
writer = mxf_essence_element_writer_find (templ);
if (!writer) {
GST_ERROR_OBJECT (mux, "Not our template");
return NULL;
}
pad_number = g_atomic_int_add ((gint *) & mux->n_pads, 1);
name = gst_mxf_mux_create_pad_name (templ, pad_number);
GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
pad =
g_object_new (GST_TYPE_MXF_MUX_PAD, "name", name, "direction",
GST_PAD_SINK, "template", templ, NULL);
g_free (name);
pad->last_timestamp = 0;
pad->writer = writer;
gst_pad_use_fixed_caps (GST_PAD_CAST (pad));
return GST_AGGREGATOR_PAD (pad);
}
static GstFlowReturn
gst_mxf_mux_create_metadata (GstMXFMux * mux)
{
GstFlowReturn ret = GST_FLOW_OK;
GList *l;
GArray *tmp;
GST_DEBUG_OBJECT (mux, "Creating MXF metadata");
GST_OBJECT_LOCK (mux);
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
GstCaps *caps;
GstBuffer *buffer;
if (!pad || !pad->descriptor) {
GST_OBJECT_UNLOCK (mux);
return GST_FLOW_ERROR;
}
caps = gst_pad_get_current_caps (GST_PAD_CAST (pad));
if (!caps) {
GST_OBJECT_UNLOCK (mux);
return GST_FLOW_ERROR;
}
buffer = gst_aggregator_pad_peek_buffer (GST_AGGREGATOR_PAD (pad));
if (pad->writer->update_descriptor)
pad->writer->update_descriptor (pad->descriptor,
caps, pad->mapping_data, buffer);
if (buffer)
gst_buffer_unref (buffer);
gst_caps_unref (caps);
}
/* Preface */
mux->preface =
(MXFMetadataPreface *) g_object_new (MXF_TYPE_METADATA_PREFACE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (mux->preface)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (mux->preface)->instance_uid, mux->preface);
mux->metadata_list = g_list_prepend (mux->metadata_list, mux->preface);
mxf_timestamp_set_now (&mux->preface->last_modified_date);
mux->preface->version = 258;
mux->preface->object_model_version = 1;
mxf_op_set_generalized (&mux->preface->operational_pattern, MXF_OP_1a, TRUE,
TRUE, FALSE);
tmp = g_array_new (FALSE, FALSE, sizeof (MXFUL));
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
guint i;
gboolean found = FALSE;
if (!pad || !pad->descriptor ||
mxf_ul_is_zero (&pad->descriptor->essence_container)) {
GST_OBJECT_UNLOCK (mux);
return GST_FLOW_ERROR;
}
for (i = 0; i < tmp->len; i++) {
if (mxf_ul_is_equal (&pad->descriptor->essence_container,
&g_array_index (tmp, MXFUL, i))) {
found = TRUE;
break;
}
}
if (found)
continue;
g_array_append_val (tmp, pad->descriptor->essence_container);
}
mux->preface->n_essence_containers = tmp->len;
mux->preface->essence_containers = (MXFUL *) g_array_free (tmp, FALSE);
/* This will later be used as UID for the material package */
mxf_uuid_init (&mux->preface->primary_package_uid, mux->metadata);
/* Identifications */
{
MXFMetadataIdentification *identification;
static const guint8 gst_uid[] = {
0xe5, 0xde, 0xcd, 0x04, 0x24, 0x90, 0x69, 0x18,
0x8a, 0xc9, 0xb5, 0xd7, 0x02, 0x58, 0x46, 0x78
};
guint major, minor, micro, nano;
mux->preface->n_identifications = 1;
mux->preface->identifications = g_new0 (MXFMetadataIdentification *, 1);
identification = mux->preface->identifications[0] =
(MXFMetadataIdentification *)
g_object_new (MXF_TYPE_METADATA_IDENTIFICATION, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (identification)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (identification)->instance_uid, identification);
mux->metadata_list = g_list_prepend (mux->metadata_list, identification);
mxf_uuid_init (&identification->this_generation_uid, NULL);
identification->company_name = g_strdup ("GStreamer");
identification->product_name = g_strdup ("GStreamer Multimedia Framework");
gst_version (&major, &minor, &micro, &nano);
identification->product_version.major = major;
identification->product_version.minor = minor;
identification->product_version.patch = micro;
identification->product_version.build = nano;
identification->product_version.release =
(nano == 0) ? 1 : (nano == 1) ? 2 : 4;
identification->version_string =
g_strdup_printf ("%u.%u.%u.%u", major, minor, micro, nano);
memcpy (&identification->product_uid, &gst_uid, 16);
memcpy (&identification->modification_date,
&mux->preface->last_modified_date, sizeof (MXFTimestamp));
memcpy (&identification->toolkit_version, &identification->product_version,
sizeof (MXFProductVersion));
#ifdef HAVE_SYS_UTSNAME_H
{
struct utsname sys_details;
if (uname (&sys_details) == 0) {
identification->platform = g_strdup_printf ("%s %s %s",
sys_details.sysname, sys_details.release, sys_details.machine);
}
}
#endif
#if defined(G_OS_WIN32)
if (identification->platform == NULL)
identification->platform = g_strdup ("Microsoft Windows");
#elif defined(G_OS_BEOS)
if (identification->platform == NULL)
identification->platform = g_strdup ("BEOS");
#elif defined(G_OS_UNIX)
if (identification->platform == NULL)
identification->platform = g_strdup ("Unix");
#endif
}
/* Content storage */
{
MXFMetadataContentStorage *cstorage;
guint i;
cstorage = mux->preface->content_storage = (MXFMetadataContentStorage *)
g_object_new (MXF_TYPE_METADATA_CONTENT_STORAGE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (cstorage)->instance_uid, mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (cstorage)->instance_uid, cstorage);
mux->metadata_list = g_list_prepend (mux->metadata_list, cstorage);
cstorage->n_packages = 2;
cstorage->packages = g_new0 (MXFMetadataGenericPackage *, 2);
/* Source package */
{
MXFMetadataSourcePackage *p;
cstorage->packages[1] = (MXFMetadataGenericPackage *)
g_object_new (MXF_TYPE_METADATA_SOURCE_PACKAGE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (cstorage->packages[1])->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (cstorage->packages[1])->instance_uid,
cstorage->packages[1]);
mux->metadata_list =
g_list_prepend (mux->metadata_list, cstorage->packages[1]);
p = (MXFMetadataSourcePackage *) cstorage->packages[1];
mxf_umid_init (&p->parent.package_uid);
p->parent.name = g_strdup ("Source package");
memcpy (&p->parent.package_creation_date,
&mux->preface->last_modified_date, sizeof (MXFTimestamp));
memcpy (&p->parent.package_modified_date,
&mux->preface->last_modified_date, sizeof (MXFTimestamp));
p->parent.n_tracks = GST_ELEMENT_CAST (mux)->numsinkpads + 1;
p->parent.tracks = g_new0 (MXFMetadataTrack *, p->parent.n_tracks);
if (p->parent.n_tracks > 2) {
MXFMetadataMultipleDescriptor *d;
p->descriptor = (MXFMetadataGenericDescriptor *)
g_object_new (MXF_TYPE_METADATA_MULTIPLE_DESCRIPTOR, NULL);
d = (MXFMetadataMultipleDescriptor *) p->descriptor;
d->n_sub_descriptors = p->parent.n_tracks - 1;
d->sub_descriptors =
g_new0 (MXFMetadataGenericDescriptor *, p->parent.n_tracks - 1);
mxf_uuid_init (&MXF_METADATA_BASE (d)->instance_uid, mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (d)->instance_uid, d);
mux->metadata_list = g_list_prepend (mux->metadata_list, d);
}
/* Tracks */
{
guint n;
n = 1;
/* Essence tracks */
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
MXFMetadataTimelineTrack *track;
MXFMetadataSequence *sequence;
MXFMetadataSourceClip *clip;
GstCaps *caps;
GstBuffer *buffer;
p->parent.tracks[n] = (MXFMetadataTrack *)
g_object_new (MXF_TYPE_METADATA_TIMELINE_TRACK, NULL);
track = (MXFMetadataTimelineTrack *) p->parent.tracks[n];
mxf_uuid_init (&MXF_METADATA_BASE (track)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (track)->instance_uid, track);
mux->metadata_list = g_list_prepend (mux->metadata_list, track);
caps = gst_pad_get_current_caps (GST_PAD_CAST (pad));
buffer = gst_aggregator_pad_peek_buffer (GST_AGGREGATOR_PAD (pad));
track->parent.track_id = n + 1;
track->parent.track_number =
pad->writer->get_track_number_template (pad->descriptor,
caps, pad->mapping_data);
/* FIXME: All tracks in a source package must have the same edit
* rate! This means that if we have different edit rates, we need to
* make them different source packages and essence containers with
* a different BodySID */
pad->writer->get_edit_rate (pad->descriptor,
caps, pad->mapping_data, buffer, p, track, &track->edit_rate);
if (buffer)
gst_buffer_unref (buffer);
gst_caps_unref (caps);
sequence = track->parent.sequence = (MXFMetadataSequence *)
g_object_new (MXF_TYPE_METADATA_SEQUENCE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (sequence)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (sequence)->instance_uid, sequence);
mux->metadata_list = g_list_prepend (mux->metadata_list, sequence);
memcpy (&sequence->data_definition, &pad->writer->data_definition,
16);
sequence->n_structural_components = 1;
sequence->structural_components =
g_new0 (MXFMetadataStructuralComponent *, 1);
clip = (MXFMetadataSourceClip *)
g_object_new (MXF_TYPE_METADATA_SOURCE_CLIP, NULL);
sequence->structural_components[0] =
(MXFMetadataStructuralComponent *) clip;
mxf_uuid_init (&MXF_METADATA_BASE (clip)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (clip)->instance_uid, clip);
mux->metadata_list = g_list_prepend (mux->metadata_list, clip);
memcpy (&clip->parent.data_definition, &sequence->data_definition,
16);
clip->start_position = 0;
pad->source_package = p;
pad->source_track = track;
pad->descriptor->linked_track_id = n + 1;
if (p->parent.n_tracks == 2) {
p->descriptor = (MXFMetadataGenericDescriptor *) pad->descriptor;
} else {
MXF_METADATA_MULTIPLE_DESCRIPTOR (p->
descriptor)->sub_descriptors[n - 1] =
(MXFMetadataGenericDescriptor *) pad->descriptor;
}
n++;
}
}
}
/* Material package */
{
MXFMetadataMaterialPackage *p;
MXFFraction min_edit_rate = { 0, 0 };
gdouble min_edit_rate_d = G_MAXDOUBLE;
cstorage->packages[0] = (MXFMetadataGenericPackage *)
g_object_new (MXF_TYPE_METADATA_MATERIAL_PACKAGE, NULL);
memcpy (&MXF_METADATA_BASE (cstorage->packages[0])->instance_uid,
&mux->preface->primary_package_uid, 16);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (cstorage->packages[0])->instance_uid,
cstorage->packages[0]);
mux->metadata_list =
g_list_prepend (mux->metadata_list, cstorage->packages[0]);
p = (MXFMetadataMaterialPackage *) cstorage->packages[0];
mxf_umid_init (&p->package_uid);
p->name = g_strdup ("Material package");
memcpy (&p->package_creation_date, &mux->preface->last_modified_date,
sizeof (MXFTimestamp));
memcpy (&p->package_modified_date, &mux->preface->last_modified_date,
sizeof (MXFTimestamp));
p->n_tracks = GST_ELEMENT_CAST (mux)->numsinkpads + 1;
p->tracks = g_new0 (MXFMetadataTrack *, p->n_tracks);
/* Tracks */
{
guint n;
n = 1;
/* Essence tracks */
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
GstCaps *caps;
GstBuffer *buffer;
MXFMetadataSourcePackage *source_package;
MXFMetadataTimelineTrack *track, *source_track;
MXFMetadataSequence *sequence;
MXFMetadataSourceClip *clip;
source_package = MXF_METADATA_SOURCE_PACKAGE (cstorage->packages[1]);
source_track =
MXF_METADATA_TIMELINE_TRACK (source_package->parent.tracks[n]);
p->tracks[n] = (MXFMetadataTrack *)
g_object_new (MXF_TYPE_METADATA_TIMELINE_TRACK, NULL);
track = (MXFMetadataTimelineTrack *) p->tracks[n];
mxf_uuid_init (&MXF_METADATA_BASE (track)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (track)->instance_uid, track);
mux->metadata_list = g_list_prepend (mux->metadata_list, track);
track->parent.track_id = n + 1;
track->parent.track_number = 0;
caps = gst_pad_get_current_caps (GST_PAD_CAST (pad));
buffer = gst_aggregator_pad_peek_buffer (GST_AGGREGATOR_PAD (pad));
pad->writer->get_edit_rate (pad->descriptor,
caps, pad->mapping_data,
buffer, source_package, source_track, &track->edit_rate);
if (buffer)
gst_buffer_unref (buffer);
gst_caps_unref (caps);
if (track->edit_rate.n != source_track->edit_rate.n ||
track->edit_rate.d != source_track->edit_rate.d) {
memcpy (&source_track->edit_rate, &track->edit_rate,
sizeof (MXFFraction));
}
if (track->edit_rate.d <= 0 || track->edit_rate.n <= 0) {
GST_ERROR_OBJECT (mux, "Invalid edit rate");
GST_OBJECT_UNLOCK (mux);
return GST_FLOW_ERROR;
}
if (min_edit_rate_d >
((gdouble) track->edit_rate.n) / ((gdouble) track->edit_rate.d)) {
min_edit_rate_d =
((gdouble) track->edit_rate.n) / ((gdouble) track->edit_rate.d);
memcpy (&min_edit_rate, &track->edit_rate, sizeof (MXFFraction));
}
sequence = track->parent.sequence = (MXFMetadataSequence *)
g_object_new (MXF_TYPE_METADATA_SEQUENCE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (sequence)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (sequence)->instance_uid, sequence);
mux->metadata_list = g_list_prepend (mux->metadata_list, sequence);
memcpy (&sequence->data_definition, &pad->writer->data_definition,
16);
sequence->n_structural_components = 1;
sequence->structural_components =
g_new0 (MXFMetadataStructuralComponent *, 1);
clip = (MXFMetadataSourceClip *)
g_object_new (MXF_TYPE_METADATA_SOURCE_CLIP, NULL);
sequence->structural_components[0] =
(MXFMetadataStructuralComponent *) clip;
mxf_uuid_init (&MXF_METADATA_BASE (clip)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (clip)->instance_uid, clip);
mux->metadata_list = g_list_prepend (mux->metadata_list, clip);
memcpy (&clip->parent.data_definition, &sequence->data_definition,
16);
clip->start_position = 0;
memcpy (&clip->source_package_id, &cstorage->packages[1]->package_uid,
32);
clip->source_track_id = n + 1;
n++;
}
n = 0;
/* Timecode track */
{
MXFMetadataTimelineTrack *track;
MXFMetadataSequence *sequence;
MXFMetadataTimecodeComponent *component;
p->tracks[n] = (MXFMetadataTrack *)
g_object_new (MXF_TYPE_METADATA_TIMELINE_TRACK, NULL);
track = (MXFMetadataTimelineTrack *) p->tracks[n];
mxf_uuid_init (&MXF_METADATA_BASE (track)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (track)->instance_uid, track);
mux->metadata_list = g_list_prepend (mux->metadata_list, track);
track->parent.track_id = n + 1;
track->parent.track_number = 0;
track->parent.track_name = g_strdup ("Timecode track");
/* FIXME: Is this correct? */
memcpy (&track->edit_rate, &min_edit_rate, sizeof (MXFFraction));
sequence = track->parent.sequence = (MXFMetadataSequence *)
g_object_new (MXF_TYPE_METADATA_SEQUENCE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (sequence)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (sequence)->instance_uid, sequence);
mux->metadata_list = g_list_prepend (mux->metadata_list, sequence);
memcpy (&sequence->data_definition,
mxf_metadata_track_identifier_get
(MXF_METADATA_TRACK_TIMECODE_12M_INACTIVE), 16);
sequence->n_structural_components = 1;
sequence->structural_components =
g_new0 (MXFMetadataStructuralComponent *, 1);
component = (MXFMetadataTimecodeComponent *)
g_object_new (MXF_TYPE_METADATA_TIMECODE_COMPONENT, NULL);
sequence->structural_components[0] =
(MXFMetadataStructuralComponent *) component;
mxf_uuid_init (&MXF_METADATA_BASE (component)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (component)->instance_uid, component);
mux->metadata_list = g_list_prepend (mux->metadata_list, component);
memcpy (&component->parent.data_definition,
&sequence->data_definition, 16);
component->start_timecode = 0;
if (track->edit_rate.d == 0)
component->rounded_timecode_base = 1;
else
component->rounded_timecode_base =
(((gdouble) track->edit_rate.n) /
((gdouble) track->edit_rate.d) + 0.5);
/* TODO: drop frame */
}
memcpy (&mux->min_edit_rate, &min_edit_rate, sizeof (MXFFraction));
}
}
/* Timecode track */
{
MXFMetadataSourcePackage *p;
MXFMetadataTimelineTrack *track;
MXFMetadataSequence *sequence;
MXFMetadataTimecodeComponent *component;
guint n = 0;
p = (MXFMetadataSourcePackage *) cstorage->packages[1];
p->parent.tracks[n] = (MXFMetadataTrack *)
g_object_new (MXF_TYPE_METADATA_TIMELINE_TRACK, NULL);
track = (MXFMetadataTimelineTrack *) p->parent.tracks[n];
mxf_uuid_init (&MXF_METADATA_BASE (track)->instance_uid, mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (track)->instance_uid, track);
mux->metadata_list = g_list_prepend (mux->metadata_list, track);
track->parent.track_id = n + 1;
track->parent.track_number = 0;
track->parent.track_name = g_strdup ("Timecode track");
/* FIXME: Is this correct? */
memcpy (&track->edit_rate, &mux->min_edit_rate, sizeof (MXFFraction));
sequence = track->parent.sequence = (MXFMetadataSequence *)
g_object_new (MXF_TYPE_METADATA_SEQUENCE, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (sequence)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (sequence)->instance_uid, sequence);
mux->metadata_list = g_list_prepend (mux->metadata_list, sequence);
memcpy (&sequence->data_definition,
mxf_metadata_track_identifier_get
(MXF_METADATA_TRACK_TIMECODE_12M_INACTIVE), 16);
sequence->n_structural_components = 1;
sequence->structural_components =
g_new0 (MXFMetadataStructuralComponent *, 1);
component = (MXFMetadataTimecodeComponent *)
g_object_new (MXF_TYPE_METADATA_TIMECODE_COMPONENT, NULL);
sequence->structural_components[0] =
(MXFMetadataStructuralComponent *) component;
mxf_uuid_init (&MXF_METADATA_BASE (component)->instance_uid,
mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (component)->instance_uid, component);
mux->metadata_list = g_list_prepend (mux->metadata_list, component);
memcpy (&component->parent.data_definition,
&sequence->data_definition, 16);
component->start_timecode = 0;
if (track->edit_rate.d == 0)
component->rounded_timecode_base = 1;
else
component->rounded_timecode_base =
(((gdouble) track->edit_rate.n) /
((gdouble) track->edit_rate.d) + 0.5);
/* TODO: drop frame */
}
for (i = 1; i < cstorage->packages[1]->n_tracks; i++) {
MXFMetadataTrack *track = cstorage->packages[1]->tracks[i];
guint j;
guint32 templ;
guint8 n_type, n;
if ((track->track_number & 0x00ff00ff) != 0)
continue;
templ = track->track_number;
n_type = 0;
for (j = 1; j < cstorage->packages[1]->n_tracks; j++) {
MXFMetadataTrack *tmp = cstorage->packages[1]->tracks[j];
if (tmp->track_number == templ) {
n_type++;
}
}
n = 0;
for (j = 1; j < cstorage->packages[1]->n_tracks; j++) {
MXFMetadataTrack *tmp = cstorage->packages[1]->tracks[j];
if (tmp->track_number == templ) {
n++;
tmp->track_number |= (n_type << 16) | (n);
}
}
}
cstorage->n_essence_container_data = 1;
cstorage->essence_container_data =
g_new0 (MXFMetadataEssenceContainerData *, 1);
cstorage->essence_container_data[0] = (MXFMetadataEssenceContainerData *)
g_object_new (MXF_TYPE_METADATA_ESSENCE_CONTAINER_DATA, NULL);
mxf_uuid_init (&MXF_METADATA_BASE (cstorage->essence_container_data[0])->
instance_uid, mux->metadata);
g_hash_table_insert (mux->metadata,
&MXF_METADATA_BASE (cstorage->essence_container_data[0])->instance_uid,
cstorage->essence_container_data[0]);
mux->metadata_list =
g_list_prepend (mux->metadata_list,
cstorage->essence_container_data[0]);
cstorage->essence_container_data[0]->linked_package =
MXF_METADATA_SOURCE_PACKAGE (cstorage->packages[1]);
cstorage->essence_container_data[0]->index_sid = 2;
cstorage->essence_container_data[0]->body_sid = 1;
}
/* Sort descriptors at the correct places */
{
GList *l;
GList *descriptors = NULL;
for (l = mux->metadata_list; l; l = l->next) {
MXFMetadataBase *m = l->data;
if (MXF_IS_METADATA_GENERIC_DESCRIPTOR (m)
&& !MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (m)) {
descriptors = l;
l->prev->next = NULL;
l->prev = NULL;
break;
}
}
g_assert (descriptors != NULL);
for (l = mux->metadata_list; l; l = l->next) {
MXFMetadataBase *m = l->data;
GList *s;
if (MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (m) ||
MXF_IS_METADATA_SOURCE_PACKAGE (m)) {
s = l->prev;
l->prev = g_list_last (descriptors);
s->next = descriptors;
descriptors->prev = s;
l->prev->next = l;
break;
}
}
}
GST_OBJECT_UNLOCK (mux);
mux->metadata_list = g_list_reverse (mux->metadata_list);
return ret;
}
static GstFlowReturn
gst_mxf_mux_init_partition_pack (GstMXFMux * mux)
{
GList *l;
guint i = 0;
mxf_partition_pack_reset (&mux->partition);
mux->partition.type = MXF_PARTITION_PACK_HEADER;
mux->partition.closed = mux->partition.complete = FALSE;
mux->partition.major_version = 0x0001;
mux->partition.minor_version = 0x0002;
mux->partition.kag_size = 1;
mux->partition.this_partition = 0;
mux->partition.prev_partition = 0;
mux->partition.footer_partition = 0;
mux->partition.header_byte_count = 0;
mux->partition.index_byte_count = 0;
mux->partition.index_sid = 0;
mux->partition.body_offset = 0;
mux->partition.body_sid = 0;
memcpy (&mux->partition.operational_pattern,
&mux->preface->operational_pattern, 16);
GST_OBJECT_LOCK (mux);
mux->partition.n_essence_containers = GST_ELEMENT_CAST (mux)->numsinkpads;
mux->partition.essence_containers =
g_new0 (MXFUL, mux->partition.n_essence_containers);
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
guint j;
gboolean found = FALSE;
for (j = 0; j <= i; j++) {
if (mxf_ul_is_equal (&pad->descriptor->essence_container,
&mux->partition.essence_containers[j])) {
found = TRUE;
break;
}
}
if (found)
continue;
memcpy (&mux->partition.essence_containers[i],
&pad->descriptor->essence_container, 16);
i++;
}
mux->partition.n_essence_containers = i;
GST_OBJECT_UNLOCK (mux);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_mxf_mux_write_header_metadata (GstMXFMux * mux)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buf;
GList *buffers = NULL;
GList *l;
MXFMetadataBase *m;
guint64 header_byte_count = 0;
for (l = mux->metadata_list; l; l = l->next) {
m = l->data;
buf = mxf_metadata_base_to_buffer (m, &mux->primer);
header_byte_count += gst_buffer_get_size (buf);
buffers = g_list_prepend (buffers, buf);
}
buffers = g_list_reverse (buffers);
buf = mxf_primer_pack_to_buffer (&mux->primer);
header_byte_count += gst_buffer_get_size (buf);
buffers = g_list_prepend (buffers, buf);
mux->partition.header_byte_count = header_byte_count;
buf = mxf_partition_pack_to_buffer (&mux->partition);
if ((ret = gst_mxf_mux_push (mux, buf)) != GST_FLOW_OK) {
GST_ERROR_OBJECT (mux, "Failed pushing partition: %s",
gst_flow_get_name (ret));
g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
g_list_free (buffers);
return ret;
}
for (l = buffers; l; l = l->next) {
buf = l->data;
l->data = NULL;
if ((ret = gst_mxf_mux_push (mux, buf)) != GST_FLOW_OK) {
GST_ERROR_OBJECT (mux, "Failed pushing buffer: %s",
gst_flow_get_name (ret));
g_list_foreach (l, (GFunc) gst_mini_object_unref, NULL);
g_list_free (buffers);
return ret;
}
}
g_list_free (buffers);
return ret;
}
static const guint8 _gc_essence_element_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x01, 0x02, 0x01, 0x01,
0x0d, 0x01, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00
};
static GstFlowReturn
gst_mxf_mux_handle_buffer (GstMXFMux * mux, GstMXFMuxPad * pad)
{
GstBuffer *buf = gst_aggregator_pad_peek_buffer (GST_AGGREGATOR_PAD (pad));
GstBuffer *outbuf = NULL;
GstMapInfo map;
gsize buf_size;
GstFlowReturn ret = GST_FLOW_OK;
guint8 slen, ber[9];
gboolean flush = gst_aggregator_pad_is_eos (GST_AGGREGATOR_PAD (pad))
&& !pad->have_complete_edit_unit && buf == NULL;
gboolean is_keyframe = buf ?
!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT) : TRUE;
GstClockTime pts = buf ? GST_BUFFER_PTS (buf) : GST_CLOCK_TIME_NONE;
GstClockTime dts = buf ? GST_BUFFER_DTS (buf) : GST_CLOCK_TIME_NONE;
if (pad->have_complete_edit_unit) {
GST_DEBUG_OBJECT (pad,
"Handling remaining buffer for track %u at position %" G_GINT64_FORMAT,
pad->source_track->parent.track_id, pad->pos);
if (buf)
gst_buffer_unref (buf);
buf = NULL;
} else if (!flush) {
if (buf)
gst_buffer_unref (buf);
buf = gst_aggregator_pad_pop_buffer (GST_AGGREGATOR_PAD (pad));
}
if (buf) {
GST_DEBUG_OBJECT (pad,
"Handling buffer of size %" G_GSIZE_FORMAT " for track %u at position %"
G_GINT64_FORMAT, gst_buffer_get_size (buf),
pad->source_track->parent.track_id, pad->pos);
} else {
flush = TRUE;
GST_DEBUG_OBJECT (pad,
"Flushing for track %u at position %" G_GINT64_FORMAT,
pad->source_track->parent.track_id, pad->pos);
}
ret = pad->write_func (buf, pad->mapping_data, pad->adapter, &outbuf, flush);
if (ret != GST_FLOW_OK && ret != GST_FLOW_CUSTOM_SUCCESS) {
GST_ERROR_OBJECT (pad,
"Failed handling buffer for track %u, reason %s",
pad->source_track->parent.track_id, gst_flow_get_name (ret));
return ret;
}
if (ret == GST_FLOW_CUSTOM_SUCCESS) {
pad->have_complete_edit_unit = TRUE;
ret = GST_FLOW_OK;
} else {
pad->have_complete_edit_unit = FALSE;
}
buf = outbuf;
if (buf == NULL)
return ret;
/* We currently only index the first essence stream */
if (pad == (GstMXFMuxPad *) GST_ELEMENT_CAST (mux)->sinkpads->data) {
MXFIndexTableSegment *segment;
const gint max_segment_size = G_MAXUINT16 / 11;
if (mux->index_table->len == 0 ||
g_array_index (mux->index_table, MXFIndexTableSegment,
mux->current_index_pos).index_duration >= max_segment_size) {
if (mux->index_table->len > 0)
mux->current_index_pos++;
if (mux->index_table->len <= mux->current_index_pos) {
MXFIndexTableSegment s;
memset (&segment, 0, sizeof (segment));
mxf_uuid_init (&s.instance_id, mux->metadata);
memcpy (&s.index_edit_rate, &pad->source_track->edit_rate,
sizeof (s.index_edit_rate));
if (mux->index_table->len > 0)
s.index_start_position =
g_array_index (mux->index_table, MXFIndexTableSegment,
mux->index_table->len - 1).index_start_position;
else
s.index_start_position = 0;
s.index_duration = 0;
s.edit_unit_byte_count = 0;
s.index_sid =
mux->preface->content_storage->essence_container_data[0]->index_sid;
s.body_sid =
mux->preface->content_storage->essence_container_data[0]->body_sid;
s.slice_count = 0;
s.pos_table_count = 0;
s.n_delta_entries = 0;
s.delta_entries = NULL;
s.n_index_entries = 0;
s.index_entries = g_new0 (MXFIndexEntry, max_segment_size);
g_array_append_val (mux->index_table, s);
}
}
segment =
&g_array_index (mux->index_table, MXFIndexTableSegment,
mux->current_index_pos);
if (dts != GST_CLOCK_TIME_NONE && pts != GST_CLOCK_TIME_NONE) {
guint64 pts_pos;
guint64 pts_index_pos, pts_segment_pos;
gint64 index_pos_diff;
MXFIndexTableSegment *pts_segment;
pts =
gst_segment_to_running_time (&pad->parent.segment, GST_FORMAT_TIME,
pts);
pts_pos =
gst_util_uint64_scale_round (pts, pad->source_track->edit_rate.n,
pad->source_track->edit_rate.d * GST_SECOND);
index_pos_diff = pts_pos - pad->pos;
pts_index_pos = mux->current_index_pos;
pts_segment_pos = segment->n_index_entries;
if (index_pos_diff >= 0) {
while (pts_segment_pos + index_pos_diff >= max_segment_size) {
index_pos_diff -= max_segment_size - pts_segment_pos;
pts_segment_pos = 0;
pts_index_pos++;
if (pts_index_pos >= mux->index_table->len) {
MXFIndexTableSegment s;
memset (&segment, 0, sizeof (segment));
mxf_uuid_init (&s.instance_id, mux->metadata);
memcpy (&s.index_edit_rate, &pad->source_track->edit_rate,
sizeof (s.index_edit_rate));
if (mux->index_table->len > 0)
s.index_start_position =
g_array_index (mux->index_table, MXFIndexTableSegment,
mux->index_table->len - 1).index_start_position;
else
s.index_start_position = 0;
s.index_duration = 0;
s.edit_unit_byte_count = 0;
s.index_sid =
mux->preface->content_storage->
essence_container_data[0]->index_sid;
s.body_sid =
mux->preface->content_storage->
essence_container_data[0]->body_sid;
s.slice_count = 0;
s.pos_table_count = 0;
s.n_delta_entries = 0;
s.delta_entries = NULL;
s.n_index_entries = 0;
s.index_entries = g_new0 (MXFIndexEntry, max_segment_size);
g_array_append_val (mux->index_table, s);
}
}
} else {
while (pts_segment_pos + index_pos_diff <= 0) {
if (pts_index_pos == 0) {
pts_index_pos = G_MAXUINT64;
break;
}
index_pos_diff += pts_segment_pos;
pts_segment_pos = max_segment_size;
pts_index_pos--;
}
}
if (pts_index_pos != G_MAXUINT64) {
g_assert (index_pos_diff < 127 && index_pos_diff >= -127);
pts_segment =
&g_array_index (mux->index_table, MXFIndexTableSegment,
pts_index_pos);
pts_segment->index_entries[pts_segment_pos +
index_pos_diff].temporal_offset = -index_pos_diff;
}
}
/* Leave temporal offset initialized at 0, above code will set it as necessary */
;
if (is_keyframe)
mux->last_keyframe_pos = pad->pos;
segment->index_entries[segment->n_index_entries].key_frame_offset =
MIN (pad->pos - mux->last_keyframe_pos, 127);
segment->index_entries[segment->n_index_entries].flags = is_keyframe ? 0x80 : 0x20; /* FIXME: Need to distinguish all the cases */
segment->index_entries[segment->n_index_entries].stream_offset =
mux->partition.body_offset;
segment->n_index_entries++;
segment->index_duration++;
}
buf_size = gst_buffer_get_size (buf);
slen = mxf_ber_encode_size (buf_size, ber);
outbuf = gst_buffer_new_and_alloc (16 + slen);
gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
memcpy (map.data, _gc_essence_element_ul, 16);
GST_WRITE_UINT32_BE (map.data + 12, pad->source_track->parent.track_number);
memcpy (map.data + 16, ber, slen);
gst_buffer_unmap (outbuf, &map);
outbuf = gst_buffer_append (outbuf, buf);
GST_DEBUG_OBJECT (pad,
"Pushing buffer of size %" G_GSIZE_FORMAT " for track %u",
gst_buffer_get_size (outbuf), pad->source_track->parent.track_id);
mux->partition.body_offset += gst_buffer_get_size (outbuf);
if ((ret = gst_mxf_mux_push (mux, outbuf)) != GST_FLOW_OK) {
GST_ERROR_OBJECT (pad,
"Failed pushing buffer for track %u, reason %s",
pad->source_track->parent.track_id, gst_flow_get_name (ret));
return ret;
}
pad->pos++;
pad->last_timestamp =
gst_util_uint64_scale (GST_SECOND * pad->pos,
pad->source_track->edit_rate.d, pad->source_track->edit_rate.n);
return ret;
}
static GstFlowReturn
gst_mxf_mux_write_body_partition (GstMXFMux * mux)
{
GstBuffer *buf;
mux->partition.type = MXF_PARTITION_PACK_BODY;
mux->partition.closed = TRUE;
mux->partition.complete = TRUE;
mux->partition.this_partition = mux->offset;
mux->partition.prev_partition = 0;
mux->partition.footer_partition = 0;
mux->partition.header_byte_count = 0;
mux->partition.index_byte_count = 0;
mux->partition.index_sid = 0;
mux->partition.body_offset = 0;
mux->partition.body_sid =
mux->preface->content_storage->essence_container_data[0]->body_sid;
buf = mxf_partition_pack_to_buffer (&mux->partition);
return gst_mxf_mux_push (mux, buf);
}
static GstFlowReturn
gst_mxf_mux_handle_eos (GstMXFMux * mux)
{
GList *l;
gboolean have_data = FALSE;
GstBuffer *packet;
do {
GstMXFMuxPad *best = NULL;
have_data = FALSE;
GST_OBJECT_LOCK (mux);
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
GstBuffer *buffer =
gst_aggregator_pad_peek_buffer (GST_AGGREGATOR_PAD (pad));
GstClockTime next_gc_timestamp =
gst_util_uint64_scale ((mux->last_gc_position + 1) * GST_SECOND,
mux->min_edit_rate.d, mux->min_edit_rate.n);
if (pad->have_complete_edit_unit ||
gst_adapter_available (pad->adapter) > 0 || buffer) {
have_data = TRUE;
if (pad->last_timestamp < next_gc_timestamp) {
best = gst_object_ref (pad);
if (buffer)
gst_buffer_unref (buffer);
break;
}
}
if (buffer)
gst_buffer_unref (buffer);
if (have_data && !l->next) {
mux->last_gc_position++;
mux->last_gc_timestamp = next_gc_timestamp;
break;
}
}
GST_OBJECT_UNLOCK (mux);
if (best) {
gst_mxf_mux_handle_buffer (mux, best);
gst_object_unref (best);
have_data = TRUE;
}
} while (have_data);
mux->last_gc_position++;
mux->last_gc_timestamp =
gst_util_uint64_scale (mux->last_gc_position * GST_SECOND,
mux->min_edit_rate.d, mux->min_edit_rate.n);
/* Update essence track durations */
GST_OBJECT_LOCK (mux);
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
GstMXFMuxPad *pad = l->data;
guint i;
/* Update durations */
pad->source_track->parent.sequence->duration = pad->pos;
MXF_METADATA_SOURCE_CLIP (pad->source_track->parent.
sequence->structural_components[0])->parent.duration = pad->pos;
for (i = 0; i < mux->preface->content_storage->packages[0]->n_tracks; i++) {
MXFMetadataTimelineTrack *track;
if (!MXF_IS_METADATA_TIMELINE_TRACK (mux->preface->
content_storage->packages[0]->tracks[i])
|| !MXF_IS_METADATA_SOURCE_CLIP (mux->preface->
content_storage->packages[0]->tracks[i]->sequence->
structural_components[0]))
continue;
track =
MXF_METADATA_TIMELINE_TRACK (mux->preface->
content_storage->packages[0]->tracks[i]);
if (MXF_METADATA_SOURCE_CLIP (track->parent.
sequence->structural_components[0])->source_track_id ==
pad->source_track->parent.track_id) {
track->parent.sequence->structural_components[0]->duration = pad->pos;
track->parent.sequence->duration = pad->pos;
}
}
}
GST_OBJECT_UNLOCK (mux);
/* Update timecode track duration */
{
MXFMetadataTimelineTrack *track =
MXF_METADATA_TIMELINE_TRACK (mux->preface->
content_storage->packages[0]->tracks[0]);
MXFMetadataSequence *sequence = track->parent.sequence;
MXFMetadataTimecodeComponent *component =
MXF_METADATA_TIMECODE_COMPONENT (sequence->structural_components[0]);
sequence->duration = mux->last_gc_position;
component->parent.duration = mux->last_gc_position;
}
{
MXFMetadataTimelineTrack *track =
MXF_METADATA_TIMELINE_TRACK (mux->preface->
content_storage->packages[1]->tracks[0]);
MXFMetadataSequence *sequence = track->parent.sequence;
MXFMetadataTimecodeComponent *component =
MXF_METADATA_TIMECODE_COMPONENT (sequence->structural_components[0]);
sequence->duration = mux->last_gc_position;
component->parent.duration = mux->last_gc_position;
}
{
guint64 body_partition = mux->partition.this_partition;
guint32 body_sid = mux->partition.body_sid;
guint64 footer_partition = mux->offset;
GArray *rip;
GstFlowReturn ret;
GstSegment segment;
MXFRandomIndexPackEntry entry;
GList *index_entries = NULL, *l;
guint index_byte_count = 0;
guint i;
GstBuffer *buf;
for (i = 0; i < mux->index_table->len; i++) {
MXFIndexTableSegment *segment =
&g_array_index (mux->index_table, MXFIndexTableSegment, i);
GstBuffer *segment_buffer = mxf_index_table_segment_to_buffer (segment);
index_byte_count += gst_buffer_get_size (segment_buffer);
index_entries = g_list_prepend (index_entries, segment_buffer);
}
mux->partition.type = MXF_PARTITION_PACK_FOOTER;
mux->partition.closed = TRUE;
mux->partition.complete = TRUE;
mux->partition.this_partition = mux->offset;
mux->partition.prev_partition = body_partition;
mux->partition.footer_partition = mux->offset;
mux->partition.header_byte_count = 0;
mux->partition.index_byte_count = index_byte_count;
mux->partition.index_sid =
mux->preface->content_storage->essence_container_data[0]->index_sid;
mux->partition.body_offset = 0;
mux->partition.body_sid = 0;
gst_mxf_mux_write_header_metadata (mux);
index_entries = g_list_reverse (index_entries);
for (l = index_entries; l; l = l->next) {
if ((ret = gst_mxf_mux_push (mux, l->data)) != GST_FLOW_OK) {
GST_ERROR_OBJECT (mux, "Failed pushing index table segment");
}
}
g_list_free (index_entries);
rip = g_array_sized_new (FALSE, FALSE, sizeof (MXFRandomIndexPackEntry), 3);
entry.offset = 0;
entry.body_sid = 0;
g_array_append_val (rip, entry);
entry.offset = body_partition;
entry.body_sid = body_sid;
g_array_append_val (rip, entry);
entry.offset = footer_partition;
entry.body_sid = 0;
g_array_append_val (rip, entry);
packet = mxf_random_index_pack_to_buffer (rip);
if ((ret = gst_mxf_mux_push (mux, packet)) != GST_FLOW_OK) {
GST_ERROR_OBJECT (mux, "Failed pushing random index pack");
}
g_array_free (rip, TRUE);
/* Rewrite header partition with updated values */
gst_segment_init (&segment, GST_FORMAT_BYTES);
gst_aggregator_update_segment (GST_AGGREGATOR (mux), &segment);
mux->offset = 0;
mux->partition.type = MXF_PARTITION_PACK_HEADER;
mux->partition.closed = TRUE;
mux->partition.complete = TRUE;
mux->partition.this_partition = 0;
mux->partition.prev_partition = 0;
mux->partition.footer_partition = footer_partition;
mux->partition.header_byte_count = 0;
mux->partition.index_byte_count = 0;
mux->partition.index_sid = 0;
mux->partition.body_offset = 0;
mux->partition.body_sid = 0;
ret = gst_mxf_mux_write_header_metadata (mux);
if (ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (mux, "Rewriting header partition failed");
return ret;
}
g_assert (mux->offset == body_partition);
mux->partition.type = MXF_PARTITION_PACK_BODY;
mux->partition.closed = TRUE;
mux->partition.complete = TRUE;
mux->partition.this_partition = mux->offset;
mux->partition.prev_partition = 0;
mux->partition.footer_partition = footer_partition;
mux->partition.header_byte_count = 0;
mux->partition.index_byte_count = 0;
mux->partition.index_sid = 0;
mux->partition.body_offset = 0;
mux->partition.body_sid =
mux->preface->content_storage->essence_container_data[0]->body_sid;
buf = mxf_partition_pack_to_buffer (&mux->partition);
ret = gst_mxf_mux_push (mux, buf);
if (ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (mux, "Rewriting body partition failed");
return ret;
}
}
return GST_FLOW_OK;
}
static gint
_sort_mux_pads (gconstpointer a, gconstpointer b)
{
const GstMXFMuxPad *pa = a, *pb = b;
MXFMetadataTrackType ta =
mxf_metadata_track_identifier_parse (&pa->writer->data_definition);
MXFMetadataTrackType tb =
mxf_metadata_track_identifier_parse (&pb->writer->data_definition);
if (ta != tb)
return ta - tb;
return pa->source_track->parent.track_number -
pa->source_track->parent.track_number;
}
static gboolean
gst_mxf_mux_stop (GstAggregator * aggregator)
{
GstMXFMux *mux = GST_MXF_MUX (aggregator);
gst_mxf_mux_reset (mux);
return TRUE;
}
static GstFlowReturn
gst_mxf_mux_aggregate (GstAggregator * aggregator, gboolean timeout)
{
GstMXFMux *mux = GST_MXF_MUX (aggregator);
GstMXFMuxPad *best = NULL;
GstFlowReturn ret;
GList *l;
gboolean eos = TRUE;
if (timeout) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("Live mixing and got a timeout. This is not supported yet"));
ret = GST_FLOW_ERROR;
goto error;
}
if (mux->state == GST_MXF_MUX_STATE_ERROR) {
GST_ERROR_OBJECT (mux, "Had an error before -- returning");
return GST_FLOW_ERROR;
} else if (mux->state == GST_MXF_MUX_STATE_EOS) {
GST_WARNING_OBJECT (mux, "EOS");
return GST_FLOW_EOS;
}
if (mux->state == GST_MXF_MUX_STATE_HEADER) {
GstCaps *caps;
if (GST_ELEMENT_CAST (mux)->sinkpads == NULL) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("No input streams configured"));
ret = GST_FLOW_ERROR;
goto error;
}
caps = gst_caps_new_empty_simple ("application/mxf");
gst_aggregator_set_src_caps (GST_AGGREGATOR (mux), caps);
gst_caps_unref (caps);
if ((ret = gst_mxf_mux_create_metadata (mux)) != GST_FLOW_OK)
goto error;
if ((ret = gst_mxf_mux_init_partition_pack (mux)) != GST_FLOW_OK)
goto error;
if ((ret = gst_mxf_mux_write_header_metadata (mux)) != GST_FLOW_OK)
goto error;
/* Sort pads, we will always write in that order */
GST_OBJECT_LOCK (mux);
GST_ELEMENT_CAST (mux)->sinkpads =
g_list_sort (GST_ELEMENT_CAST (mux)->sinkpads, _sort_mux_pads);
GST_OBJECT_UNLOCK (mux);
/* Write body partition */
ret = gst_mxf_mux_write_body_partition (mux);
if (ret != GST_FLOW_OK)
goto error;
mux->state = GST_MXF_MUX_STATE_DATA;
}
g_return_val_if_fail (g_hash_table_size (mux->metadata) > 0, GST_FLOW_ERROR);
do {
GST_OBJECT_LOCK (mux);
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
gboolean pad_eos;
GstMXFMuxPad *pad = l->data;
GstBuffer *buffer;
GstClockTime next_gc_timestamp =
gst_util_uint64_scale ((mux->last_gc_position + 1) * GST_SECOND,
mux->min_edit_rate.d, mux->min_edit_rate.n);
pad_eos = gst_aggregator_pad_is_eos (GST_AGGREGATOR_PAD (pad));
if (!pad_eos)
eos = FALSE;
buffer = gst_aggregator_pad_peek_buffer (GST_AGGREGATOR_PAD (pad));
if ((!pad_eos || pad->have_complete_edit_unit ||
gst_adapter_available (pad->adapter) > 0 || buffer)
&& pad->last_timestamp < next_gc_timestamp) {
if (buffer)
gst_buffer_unref (buffer);
best = gst_object_ref (pad);
break;
} else if (!eos && !l->next) {
mux->last_gc_position++;
mux->last_gc_timestamp = next_gc_timestamp;
eos = FALSE;
if (buffer)
gst_buffer_unref (buffer);
best = NULL;
break;
}
if (buffer)
gst_buffer_unref (buffer);
}
GST_OBJECT_UNLOCK (mux);
} while (!eos && best == NULL);
if (!eos && best) {
ret = gst_mxf_mux_handle_buffer (mux, best);
gst_object_unref (best);
if (ret != GST_FLOW_OK)
goto error;
} else if (eos) {
GST_DEBUG_OBJECT (mux, "Handling EOS");
if (best)
gst_object_unref (best);
gst_mxf_mux_handle_eos (mux);
mux->state = GST_MXF_MUX_STATE_EOS;
return GST_FLOW_EOS;
} else {
g_assert_not_reached ();
}
return GST_FLOW_OK;
error:
{
mux->state = GST_MXF_MUX_STATE_ERROR;
return ret;
}
}
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