| /* 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) |
| * - decodebin2 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, |
| 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); |
| |
| 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); |
| } |