gstreamer/gst/mxf/mxfvc3.c
Sebastian Dröge 830e89b7e9 mxfdemux: Take temporal reordering from the index table into account
This is needed to know the PTS, without that we only know the DTS and
using that also for the PTS is wrong unless we have an intra-only codec.

If we can't get the temporal reordering from the index table, don't set
any PTS for non-intra-only codecs and let decoders figure out something.

https://bugzilla.gnome.org/show_bug.cgi?id=784027
2017-06-27 10:47:44 +03:00

290 lines
8.2 KiB
C

/* GStreamer
* Copyright (C) 2008-2009 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.
*/
/* Implementation of SMPTE S2019-4 - Mapping VC-3 coding units into the MXF
* Generic Container
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <string.h>
#include "mxfvc3.h"
#include "mxfessence.h"
GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
#define GST_CAT_DEFAULT mxf_debug
static const MXFUL picture_essence_coding_vc3_avid = { {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x01, 0x0e, 0x04, 0x02, 0x01,
0x02,
0x04, 0x01, 0x00}
};
static gboolean
mxf_is_vc3_essence_track (const MXFMetadataTimelineTrack * track)
{
guint i;
g_return_val_if_fail (track != NULL, FALSE);
if (track->parent.descriptor == NULL)
return FALSE;
for (i = 0; i < track->parent.n_descriptor; i++) {
MXFMetadataFileDescriptor *d = track->parent.descriptor[i];
MXFUL *key;
if (!d)
continue;
key = &d->essence_container;
/* SMPTE S2019-4 7 */
if (mxf_is_generic_container_essence_container_label (key) &&
key->u[12] == 0x02 && key->u[13] == 0x11 &&
(key->u[14] == 0x01 || key->u[14] == 0x02)) {
return TRUE;
} else if (mxf_is_avid_essence_container_label (key)) {
MXFMetadataGenericPictureEssenceDescriptor *p;
if (!MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (d))
return FALSE;
p = MXF_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (d);
key = &p->picture_essence_coding;
if (mxf_ul_is_subclass (&picture_essence_coding_vc3_avid, key))
return TRUE;
}
}
return FALSE;
}
static GstFlowReturn
mxf_vc3_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GstCaps * caps,
MXFMetadataTimelineTrack * track,
gpointer mapping_data, GstBuffer ** outbuf)
{
*outbuf = buffer;
/* SMPTE 2019-4 6.1 */
if (key->u[12] != 0x15 || (key->u[14] != 0x05 && key->u[14] != 0x06)) {
GST_ERROR ("Invalid VC-3 essence element");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static MXFEssenceWrapping
mxf_vc3_get_track_wrapping (const MXFMetadataTimelineTrack * track)
{
guint i;
g_return_val_if_fail (track != NULL, MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING);
if (track->parent.descriptor == NULL) {
GST_ERROR ("No descriptor found for this track");
return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
}
for (i = 0; i < track->parent.n_descriptor; i++) {
if (!track->parent.descriptor[i])
continue;
if (!MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
parent.descriptor[i])
&& !(MXF_IS_METADATA_FILE_DESCRIPTOR (track->parent.descriptor[i])
&& !MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (track->
parent.descriptor[i])))
continue;
switch (track->parent.descriptor[i]->essence_container.u[14]) {
case 0x01:
return MXF_ESSENCE_WRAPPING_FRAME_WRAPPING;
break;
case 0x02:
return MXF_ESSENCE_WRAPPING_CLIP_WRAPPING;
break;
default:
return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
break;
}
}
return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
}
static GstCaps *
mxf_vc3_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
gboolean * intra_only, MXFEssenceElementHandleFunc * handler,
gpointer * mapping_data)
{
MXFMetadataFileDescriptor *f = NULL;
MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
guint i;
GstCaps *caps = NULL;
g_return_val_if_fail (track != NULL, NULL);
if (track->parent.descriptor == NULL) {
GST_ERROR ("No descriptor found for this track");
return NULL;
}
for (i = 0; i < track->parent.n_descriptor; i++) {
if (!track->parent.descriptor[i])
continue;
if (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
parent.descriptor[i])) {
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->parent.
descriptor[i];
f = track->parent.descriptor[i];
break;
} else if (MXF_IS_METADATA_FILE_DESCRIPTOR (track->parent.descriptor[i]) &&
!MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (track->parent.descriptor[i])) {
f = track->parent.descriptor[i];
}
}
if (!f) {
GST_ERROR ("No descriptor found for this track");
return NULL;
}
*handler = mxf_vc3_handle_essence_element;
caps = gst_caps_new_empty_simple ("video/x-dnxhd");
if (p) {
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
} else {
GST_WARNING ("Only a generic file descriptor found");
}
if (!*tags)
*tags = gst_tag_list_new_empty ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
"VC-3 Video", NULL);
*intra_only = TRUE;
return caps;
}
static const MXFEssenceElementHandler mxf_vc3_essence_element_handler = {
mxf_is_vc3_essence_track,
mxf_vc3_get_track_wrapping,
mxf_vc3_create_caps
};
static GstFlowReturn
mxf_vc3_write_func (GstBuffer * buffer, gpointer mapping_data,
GstAdapter * adapter, GstBuffer ** outbuf, gboolean flush)
{
*outbuf = buffer;
return GST_FLOW_OK;
}
/* FIXME: In which version was this added? Byte 7, assuming version 10 */
static const guint8 vc3_essence_container_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x0A,
0x0d, 0x01, 0x03, 0x01, 0x02, 0x11, 0x01, 0x00
};
static MXFMetadataFileDescriptor *
mxf_vc3_get_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
MXFMetadataCDCIPictureEssenceDescriptor *ret;
GstStructure *s;
s = gst_caps_get_structure (caps, 0);
if (strcmp (gst_structure_get_name (s), "video/x-dnxhd") != 0) {
GST_ERROR ("Invalid caps %" GST_PTR_FORMAT, caps);
return NULL;
}
ret = (MXFMetadataCDCIPictureEssenceDescriptor *)
g_object_new (MXF_TYPE_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR, NULL);
memcpy (&ret->parent.parent.essence_container, &vc3_essence_container_ul, 16);
if (!mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
caps)) {
g_object_unref (ret);
return NULL;
}
*handler = mxf_vc3_write_func;
return (MXFMetadataFileDescriptor *) ret;
}
static void
mxf_vc3_update_descriptor (MXFMetadataFileDescriptor * d, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf)
{
return;
}
static void
mxf_vc3_get_edit_rate (MXFMetadataFileDescriptor * a, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf, MXFMetadataSourcePackage * package,
MXFMetadataTimelineTrack * track, MXFFraction * edit_rate)
{
edit_rate->n = a->sample_rate.n;
edit_rate->d = a->sample_rate.d;
}
static guint32
mxf_vc3_get_track_number_template (MXFMetadataFileDescriptor * a,
GstCaps * caps, gpointer mapping_data)
{
return (0x15 << 24) | (0x05 << 8);
}
static MXFEssenceElementWriter mxf_vc3_essence_element_writer = {
mxf_vc3_get_descriptor,
mxf_vc3_update_descriptor,
mxf_vc3_get_edit_rate,
mxf_vc3_get_track_number_template,
NULL,
{{0,}}
};
void
mxf_vc3_init (void)
{
mxf_essence_element_handler_register (&mxf_vc3_essence_element_handler);
mxf_vc3_essence_element_writer.pad_template =
gst_pad_template_new ("vc3_video_sink_%u", GST_PAD_SINK, GST_PAD_REQUEST,
gst_caps_from_string ("video/x-dnxhd, width = " GST_VIDEO_SIZE_RANGE
", height = " GST_VIDEO_SIZE_RANGE ", framerate = "
GST_VIDEO_FPS_RANGE));
memcpy (&mxf_vc3_essence_element_writer.data_definition,
mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_PICTURE_ESSENCE),
16);
mxf_essence_element_writer_register (&mxf_vc3_essence_element_writer);
}