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author | Sebastian Dröge <slomo@circular-chaos.org> | 2008-12-18 17:49:08 +0000 |
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committer | Sebastian Dröge <slomo@circular-chaos.org> | 2008-12-18 17:49:08 +0000 |
commit | ecc0e9221fcfa3f46459b1f9c954298f93f72779 (patch) | |
tree | 30b4219f51797b302a820bbd67ff9b575bb3c54e | |
parent | 59c80c9a40b0b8bcdaddaa3dcb2b7260027ad1ac (diff) | |
download | gst-plugins-bad-ecc0e9221fcfa3f46459b1f9c954298f93f72779.tar.gz gst-plugins-bad-ecc0e9221fcfa3f46459b1f9c954298f93f72779.tar.bz2 gst-plugins-bad-ecc0e9221fcfa3f46459b1f9c954298f93f72779.zip |
gst/mxf/: Add support for VC-3 (aka DNxHD essence, see SMPTE 2019-4).
Original commit message from CVS:
* gst/mxf/Makefile.am:
* gst/mxf/mxf.c: (plugin_init):
* gst/mxf/mxfvc3.c: (mxf_is_vc3_essence_track),
(mxf_vc3_handle_essence_element), (mxf_vc3_create_caps),
(mxf_vc3_init):
* gst/mxf/mxfvc3.h:
Add support for VC-3 (aka DNxHD essence, see SMPTE 2019-4).
This is untested because of lack of sample files but should
work fine.
-rw-r--r-- | ChangeLog | 12 | ||||
-rw-r--r-- | gst/mxf/Makefile.am | 2 | ||||
-rw-r--r-- | gst/mxf/mxf.c | 2 | ||||
-rw-r--r-- | gst/mxf/mxfvc3.c | 146 | ||||
-rw-r--r-- | gst/mxf/mxfvc3.h | 33 |
5 files changed, 195 insertions, 0 deletions
@@ -1,3 +1,15 @@ +2008-12-18 Sebastian Dröge <sebastian.droege@collabora.co.uk> + + * gst/mxf/Makefile.am: + * gst/mxf/mxf.c: (plugin_init): + * gst/mxf/mxfvc3.c: (mxf_is_vc3_essence_track), + (mxf_vc3_handle_essence_element), (mxf_vc3_create_caps), + (mxf_vc3_init): + * gst/mxf/mxfvc3.h: + Add support for VC-3 (aka DNxHD essence, see SMPTE 2019-4). + This is untested because of lack of sample files but should + work fine. + 2008-12-17 Wim Taymans <wim.taymans@collabora.co.uk> * docs/plugins/Makefile.am: diff --git a/gst/mxf/Makefile.am b/gst/mxf/Makefile.am index 96e5720e..397d41a0 100644 --- a/gst/mxf/Makefile.am +++ b/gst/mxf/Makefile.am @@ -11,6 +11,7 @@ libgstmxf_la_SOURCES = \ mxfjpeg2000.c \ mxfd10.c \ mxfup.c \ + mxfvc3.c \ mxfmetadata.c libgstmxf_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) @@ -28,6 +29,7 @@ noinst_HEADERS = \ mxfjpeg2000.h \ mxfd10.h \ mxfup.h \ + mxfvc3.h \ mxftypes.h \ mxfmetadata.h diff --git a/gst/mxf/mxf.c b/gst/mxf/mxf.c index 8506f431..2015bb08 100644 --- a/gst/mxf/mxf.c +++ b/gst/mxf/mxf.c @@ -31,6 +31,7 @@ #include "mxfjpeg2000.h" #include "mxfd10.h" #include "mxfup.h" +#include "mxfvc3.h" GST_DEBUG_CATEGORY (mxf_debug); #define GST_CAT_DEFAULT mxf_debug @@ -46,6 +47,7 @@ plugin_init (GstPlugin * plugin) mxf_jpeg2000_init (); mxf_d10_init (); mxf_up_init (); + mxf_vc3_init (); if (!gst_element_register (plugin, "mxfdemux", GST_RANK_PRIMARY, GST_TYPE_MXF_DEMUX)) diff --git a/gst/mxf/mxfvc3.c b/gst/mxf/mxfvc3.c new file mode 100644 index 00000000..1b449673 --- /dev/null +++ b/gst/mxf/mxfvc3.c @@ -0,0 +1,146 @@ +/* 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 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 <string.h> + +#include "mxfvc3.h" + +GST_DEBUG_CATEGORY_EXTERN (mxf_debug); +#define GST_CAT_DEFAULT mxf_debug + +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; + } + + return FALSE; +} + +static GstFlowReturn +mxf_vc3_handle_essence_element (const MXFUL * key, GstBuffer * buffer, + GstCaps * caps, + MXFMetadataTimelineTrack * track, + MXFMetadataStructuralComponent * component, 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 GstCaps * +mxf_vc3_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags, + 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_simple ("video/x-dnxhd", NULL); + 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 (); + gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC, + "VC-3 Video", NULL); + + return caps; +} + +static const MXFEssenceElementHandler mxf_vc3_essence_element_handler = { + mxf_is_vc3_essence_track, + mxf_vc3_create_caps +}; + +void +mxf_vc3_init (void) +{ + mxf_essence_element_handler_register (&mxf_vc3_essence_element_handler); +} diff --git a/gst/mxf/mxfvc3.h b/gst/mxf/mxfvc3.h new file mode 100644 index 00000000..f2bb2a35 --- /dev/null +++ b/gst/mxf/mxfvc3.h @@ -0,0 +1,33 @@ +/* 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 S2019-4 - Mapping VC-3 coding units into the MXF + * Generic Container + */ + +#ifndef __MXF_VC3_H__ +#define __MXF_VC3_H__ + +#include <gst/gst.h> + +#include "mxfparse.h" + +void mxf_vc3_init (void); + +#endif /* __MXF_VC3_H__ */ |