/* 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] != 0x0C && key->u[14] != 0x0D)) { 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) | (0x0C << 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); }