2008-11-27 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ * gst/mxf/Makefile.am:
+ * gst/mxf/mxfdemux.c:
+ (gst_mxf_demux_handle_header_metadata_update_streams),
+ (gst_mxf_demux_handle_klv_packet):
+ * gst/mxf/mxfdv-dif.c: (mxf_is_dv_dif_essence_track),
+ (mxf_dv_dif_handle_essence_element), (mxf_dv_dif_create_caps):
+ * gst/mxf/mxfdv-dif.h:
+ * gst/mxf/mxfparse.c: (mxf_is_descriptive_metadata):
+ * gst/mxf/mxfparse.h:
+ Add fundamental support for DV-DIF essence streams.
+
+ Handle descriptive metadata packets as metadata packets.
+
+2008-11-27 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+
* gst/mxf/mxfdemux.c: (gst_mxf_demux_reset),
(gst_mxf_demux_handle_klv_packet):
* gst/mxf/mxfdemux.h:
mxfdemux.c \
mxfparse.c \
mxfaes-bwf.c \
- mxfmpeg.c
+ mxfmpeg.c \
+ mxfdv-dif.c
libgstmxf_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS)
libgstmxf_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
mxfparse.h \
mxfaes-bwf.h \
mxfmpeg.h \
+ mxfdv-dif.h \
mxftypes.h
#include "mxfparse.h"
#include "mxfaes-bwf.h"
#include "mxfmpeg.h"
+#include "mxfdv-dif.h"
#include <string.h>
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)) {
+ 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;
}
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 ();
if (demux->update_metadata
&& !mxf_timestamp_is_unknown (&demux->preface.last_modified_date)
- && !mxf_is_metadata (key)
+ && !mxf_is_metadata (key) && !mxf_is_descriptive_metadata (key)
&& !mxf_is_fill (key)) {
if ((ret =
gst_mxf_demux_handle_header_metadata_resolve_references (demux)) !=
--- /dev/null
+/* 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.
+ */
+
+/* Implementation of SMPTE 383M - Mapping DV-DIF data into the MXF
+ * Generic Container
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <string.h>
+
+#include "mxfdv-dif.h"
+
+GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
+#define GST_CAT_DEFAULT mxf_debug
+
+gboolean
+mxf_is_dv_dif_essence_track (const MXFMetadataTrack * track)
+{
+ guint i;
+
+ g_return_val_if_fail (track != NULL, FALSE);
+
+ if (track->descriptor == NULL)
+ return FALSE;
+
+ for (i = 0; i < track->n_descriptor; i++) {
+ MXFMetadataFileDescriptor *d = track->descriptor[i];
+ MXFUL *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;
+ }
+
+ return FALSE;
+}
+
+static GstFlowReturn
+mxf_dv_dif_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
+ GstCaps * caps, MXFMetadataGenericPackage * package,
+ MXFMetadataTrack * track, MXFMetadataStructuralComponent * component,
+ 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;
+}
+
+
+GstCaps *
+mxf_dv_dif_create_caps (MXFMetadataGenericPackage * package,
+ MXFMetadataTrack * track, GstTagList ** tags,
+ MXFEssenceElementHandler * handler, gpointer * mapping_data)
+{
+ MXFMetadataFileDescriptor *f = NULL;
+ guint i;
+ GstCaps *caps = NULL;
+
+ g_return_val_if_fail (package != NULL, NULL);
+ g_return_val_if_fail (track != NULL, NULL);
+
+ if (track->descriptor == NULL) {
+ GST_ERROR ("No descriptor found for this track");
+ return NULL;
+ }
+
+ for (i = 0; i < track->n_descriptor; i++) {
+ if (((MXFMetadataGenericDescriptor *) track->descriptor[i])->
+ is_file_descriptor
+ && ((MXFMetadataGenericDescriptor *) track->descriptor[i])->type !=
+ MXF_METADATA_MULTIPLE_DESCRIPTOR) {
+ f = track->descriptor[i];
+ }
+ }
+
+ if (!f) {
+ GST_ERROR ("No descriptor found for this track");
+ return NULL;
+ }
+
+ *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
+ * Also dvdemux might not forward timestamps
+ */
+ if (f->essence_container.u[13] == 0x02) {
+ GST_DEBUG ("Found DV-DIF stream");
+ caps =
+ gst_caps_new_simple ("video/x-dv", "systemstream", G_TYPE_BOOLEAN, TRUE,
+ NULL);
+ }
+
+ return caps;
+}
--- /dev/null
+/* 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.
+ */
+
+/* Implementation of SMPTE 383M - Mapping DV-DIF data into the MXF
+ * Generic Container
+ */
+
+#ifndef __MXF_DV_DIF_H__
+#define __MXF_DV_DIF_H__
+
+#include <gst/gst.h>
+
+#include "mxfparse.h"
+
+gboolean mxf_is_dv_dif_essence_track (const MXFMetadataTrack *track);
+
+GstCaps *
+mxf_dv_dif_create_caps (MXFMetadataGenericPackage *package, MXFMetadataTrack *track, GstTagList **tags, MXFEssenceElementHandler *handler, gpointer *mapping_data);
+
+#endif /* __MXF_DV_DIF_H__ */
return (memcmp (key, metadata_key, 13) == 0 && key->u[15] == 0x00);
}
+/* SMPTE 377M 8.7.3 */
+gboolean
+mxf_is_descriptive_metadata (const MXFUL * key)
+{
+ return (memcmp (key, mxf_key, 4) == 0 &&
+ key->u[4] == 0x02 &&
+ key->u[6] == 0x01 &&
+ key->u[7] == 0x01 &&
+ key->u[8] == 0x0d &&
+ key->u[9] == 0x01 && key->u[10] == 0x04 && key->u[11] == 0x01);
+}
+
gboolean
mxf_is_random_index_pack (const MXFUL * key)
{
gboolean mxf_is_primer_pack (const MXFUL *key);
gboolean mxf_is_metadata (const MXFUL *key);
+gboolean mxf_is_descriptive_metadata (const MXFUL *key);
gboolean mxf_is_random_index_pack (const MXFUL *key);
gboolean mxf_is_index_table_segment (const MXFUL *key);
projects / platform / upstream / gstreamer.git / commitdiff