gstreamer/gst/mxf/mxfdv-dif.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

279 lines
7.8 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 383M - Mapping DV-DIF data into the MXF
* Generic Container
*/
/* TODO:
* - playbin hangs on a lot of MXF/DV-DIF files (bug #563827)
* - decodebin creates loops inside the linking graph (bug #563828)
* - track descriptor might be multiple descriptor, one for sound, one for video
* - there might be 2 tracks for one essence, i.e. one audio/one video track
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <string.h>
#include "mxfdv-dif.h"
#include "mxfessence.h"
GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
#define GST_CAT_DEFAULT mxf_debug
static const MXFUL picture_essence_coding_dv = { {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x01, 0x04, 0x01, 0x02, 0x02,
0x02}
};
static gboolean
mxf_is_dv_dif_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 383M 8 */
if (mxf_is_generic_container_essence_container_label (key) &&
key->u[12] == 0x02 && key->u[13] == 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_dv, key))
return TRUE;
}
}
return FALSE;
}
static GstFlowReturn
mxf_dv_dif_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GstCaps * caps,
MXFMetadataTimelineTrack * track,
gpointer mapping_data, GstBuffer ** outbuf)
{
*outbuf = buffer;
/* SMPTE 383 6.1.1 */
if (key->u[12] != 0x18 || (key->u[14] != 0x01 && key->u[14] != 0x02)) {
GST_ERROR ("Invalid DV-DIF essence element");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static MXFEssenceWrapping
mxf_dv_dif_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]))
continue;
switch (track->parent.descriptor[i]->essence_container.u[15]) {
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_dv_dif_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
gboolean * intra_only, MXFEssenceElementHandleFunc * handler,
gpointer * mapping_data)
{
GstCaps *caps = NULL;
guint i;
MXFMetadataGenericPictureEssenceDescriptor *d = 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 (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
parent.descriptor[i])) {
d = MXF_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
parent.descriptor[i]);
break;
}
}
*handler = mxf_dv_dif_handle_essence_element;
/* SMPTE 383M 8 */
/* TODO: might be video or audio only, use values of the generic sound/picture
* descriptor in the caps in that case
*/
GST_DEBUG ("Found DV-DIF stream");
caps =
gst_caps_new_simple ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
NULL);
if (d)
mxf_metadata_generic_picture_essence_descriptor_set_caps (d, caps);
if (!*tags)
*tags = gst_tag_list_new_empty ();
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_CODEC, "DV-DIF", NULL);
*intra_only = TRUE;
return caps;
}
static const MXFEssenceElementHandler mxf_dv_dif_essence_element_handler = {
mxf_is_dv_dif_essence_track,
mxf_dv_dif_get_track_wrapping,
mxf_dv_dif_create_caps
};
static GstFlowReturn
mxf_dv_dif_write_func (GstBuffer * buffer,
gpointer mapping_data, GstAdapter * adapter, GstBuffer ** outbuf,
gboolean flush)
{
*outbuf = buffer;
return GST_FLOW_OK;
}
static const guint8 dv_dif_essence_container_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x01,
0x0d, 0x01, 0x03, 0x01, 0x02, 0x02, 0x7f, 0x01
};
static MXFMetadataFileDescriptor *
mxf_dv_dif_get_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
MXFMetadataCDCIPictureEssenceDescriptor *ret;
ret = (MXFMetadataCDCIPictureEssenceDescriptor *)
g_object_new (MXF_TYPE_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR, NULL);
memcpy (&ret->parent.parent.essence_container, &dv_dif_essence_container_ul,
16);
if (!mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
caps)) {
g_object_unref (ret);
return NULL;
}
*handler = mxf_dv_dif_write_func;
return (MXFMetadataFileDescriptor *) ret;
}
static void
mxf_dv_dif_update_descriptor (MXFMetadataFileDescriptor * d, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf)
{
return;
}
static void
mxf_dv_dif_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_dv_dif_get_track_number_template (MXFMetadataFileDescriptor * a,
GstCaps * caps, gpointer mapping_data)
{
return (0x18 << 24) | (0x01 << 8);
}
static MXFEssenceElementWriter mxf_dv_dif_essence_element_writer = {
mxf_dv_dif_get_descriptor,
mxf_dv_dif_update_descriptor,
mxf_dv_dif_get_edit_rate,
mxf_dv_dif_get_track_number_template,
NULL,
{{0,}}
};
void
mxf_dv_dif_init (void)
{
mxf_essence_element_handler_register (&mxf_dv_dif_essence_element_handler);
mxf_dv_dif_essence_element_writer.pad_template =
gst_pad_template_new ("dv_dif_video_sink_%u", GST_PAD_SINK,
GST_PAD_REQUEST,
gst_caps_from_string ("video/x-dv, width = "
GST_VIDEO_SIZE_RANGE ", height = " GST_VIDEO_SIZE_RANGE
", framerate = " GST_VIDEO_FPS_RANGE ", systemstream = true"));
memcpy (&mxf_dv_dif_essence_element_writer.data_definition,
mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_PICTURE_ESSENCE),
16);
mxf_essence_element_writer_register (&mxf_dv_dif_essence_element_writer);
}