/* * MXF muxer * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com> * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* * References * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value * SMPTE 377M MXF File Format Specifications * SMPTE 379M MXF Generic Container * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container * SMPTE RP210: SMPTE Metadata Dictionary * SMPTE RP224: Registry of SMPTE Universal Labels */ //#define DEBUG #include <math.h> #include <time.h> #include "libavutil/opt.h" #include "libavutil/random_seed.h" #include "libavutil/timecode.h" #include "libavutil/avassert.h" #include "libavcodec/bytestream.h" #include "libavcodec/dnxhddata.h" #include "audiointerleave.h" #include "avformat.h" #include "internal.h" #include "mxf.h" #include "config.h" extern AVOutputFormat ff_mxf_d10_muxer; #define EDIT_UNITS_PER_BODY 250 #define KAG_SIZE 512 typedef struct { int local_tag; UID uid; } MXFLocalTagPair; typedef struct { uint8_t flags; uint64_t offset; unsigned slice_offset; ///< offset of audio slice uint16_t temporal_ref; } MXFIndexEntry; typedef struct { AudioInterleaveContext aic; UID track_essence_element_key; int index; ///< index in mxf_essence_container_uls table const UID *codec_ul; int order; ///< interleaving order if dts are equal int interlaced; ///< whether picture is interlaced int field_dominance; ///< tff=1, bff=2 int component_depth; int temporal_reordering; AVRational aspect_ratio; ///< display aspect ratio int closed_gop; ///< gop is closed, used in mpeg-2 frame parsing } MXFStreamContext; typedef struct { UID container_ul; UID element_ul; UID codec_ul; void (*write_desc)(AVFormatContext *, AVStream *); } MXFContainerEssenceEntry; static const struct { enum AVCodecID id; int index; } mxf_essence_mappings[] = { { AV_CODEC_ID_MPEG2VIDEO, 0 }, { AV_CODEC_ID_PCM_S24LE, 1 }, { AV_CODEC_ID_PCM_S16LE, 1 }, { AV_CODEC_ID_DVVIDEO, 15 }, { AV_CODEC_ID_DNXHD, 24 }, { AV_CODEC_ID_NONE } }; static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st); static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st); static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st); static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st); static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st); static const MXFContainerEssenceEntry mxf_essence_container_uls[] = { { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 }, mxf_write_mpegvideo_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_aes3_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_wav_desc }, // D-10 625/50 PAL 50mb/s { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, mxf_write_cdci_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_generic_sound_desc }, // D-10 525/60 NTSC 50mb/s { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 }, mxf_write_cdci_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_generic_sound_desc }, // D-10 625/50 PAL 40mb/s { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 }, mxf_write_cdci_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_generic_sound_desc }, // D-10 525/60 NTSC 40mb/s { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 }, mxf_write_cdci_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_generic_sound_desc }, // D-10 625/50 PAL 30mb/s { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 }, mxf_write_cdci_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_generic_sound_desc }, // D-10 525/60 NTSC 30mb/s { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 }, mxf_write_cdci_desc }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, mxf_write_generic_sound_desc }, // DV Unknwon { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 }, mxf_write_cdci_desc }, // DV25 525/60 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 }, mxf_write_cdci_desc }, // DV25 625/50 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, mxf_write_cdci_desc }, // DV50 525/60 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 }, mxf_write_cdci_desc }, // DV50 625/50 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, mxf_write_cdci_desc }, // DV100 1080/60 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 }, mxf_write_cdci_desc }, // DV100 1080/50 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 }, mxf_write_cdci_desc }, // DV100 720/60 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 }, mxf_write_cdci_desc }, // DV100 720/50 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 }, mxf_write_cdci_desc }, // DNxHD 1080p 10bit high { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 1080p 8bit medium { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 1080p 8bit high { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 1080i 10bit high { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 1080i 8bit medium { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 1080i 8bit high { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 720p 10bit { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 720p 8bit high { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 720p 8bit medium { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 }, mxf_write_cdci_desc }, // DNxHD 720p 8bit low { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 }, mxf_write_cdci_desc }, { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL }, }; typedef struct MXFContext { AVClass *av_class; int64_t footer_partition_offset; int essence_container_count; AVRational time_base; int header_written; MXFIndexEntry *index_entries; unsigned edit_units_count; uint64_t timestamp; ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8) uint8_t slice_count; ///< index slice count minus 1 (1 if no audio, 0 otherwise) int last_indexed_edit_unit; uint64_t *body_partition_offset; unsigned body_partitions_count; int last_key_index; ///< index of last key frame uint64_t duration; AVTimecode tc; ///< timecode context AVStream *timecode_track; int timecode_base; ///< rounded time code base (25 or 30) int edit_unit_byte_count; ///< fixed edit unit byte count uint64_t body_offset; uint32_t instance_number; uint8_t umid[16]; ///< unique material identifier } MXFContext; static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd }; static const uint8_t umid_ul[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 }; /** * complete key for operation pattern, partitions, and primer pack */ static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 }; static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }; static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }; static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 }; static const uint8_t header_open_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }; // OpenIncomplete static const uint8_t header_closed_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete static const uint8_t klv_fill_key[] = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 }; static const uint8_t body_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete /** * partial key for header metadata */ static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 }; static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 }; /** * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html */ static const MXFLocalTagPair mxf_local_tag_batch[] = { // preface set { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */ { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */ { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */ { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */ { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */ { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */ { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */ { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */ // Identification { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */ { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */ { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */ { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */ { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */ { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */ // Content Storage { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */ { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */ // Essence Container Data { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */ { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */ // Package { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */ { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */ { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */ { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */ { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */ // Track { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */ { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */ { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */ { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */ { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */ // Sequence { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */ { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */ { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */ // Source Clip { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */ { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */ { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */ // Timecode Component { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */ { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */ { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */ // File Descriptor { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */ { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */ { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */ { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */ // Generic Picture Essence Descriptor { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */ { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */ { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */ { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */ { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */ { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */ { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */ { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */ { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */ // CDCI Picture Essence Descriptor { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */ { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */ // Generic Sound Essence Descriptor { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */ { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */ { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */ { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */ { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */ // Index Table Segment { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */ { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */ { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */ { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */ { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */ { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */ { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */ { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */ // MPEG video Descriptor { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */ { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */ // Wave Audio Essence Descriptor { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */ { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */ }; static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value) { avio_write(pb, uuid_base, 12); avio_wb16(pb, type); avio_wb16(pb, value); } static void mxf_write_umid(AVFormatContext *s, int type) { MXFContext *mxf = s->priv_data; avio_write(s->pb, umid_ul, 13); avio_wb24(s->pb, mxf->instance_number); avio_write(s->pb, mxf->umid, 15); avio_w8(s->pb, type); } static void mxf_write_refs_count(AVIOContext *pb, int ref_count) { avio_wb32(pb, ref_count); avio_wb32(pb, 16); } static int klv_ber_length(uint64_t len) { if (len < 128) return 1; else return (av_log2(len) >> 3) + 2; } static int klv_encode_ber_length(AVIOContext *pb, uint64_t len) { // Determine the best BER size int size; if (len < 128) { //short form avio_w8(pb, len); return 1; } size = (av_log2(len) >> 3) + 1; // long form avio_w8(pb, 0x80 + size); while(size) { size--; avio_w8(pb, len >> 8 * size & 0xff); } return 0; } static void klv_encode_ber4_length(AVIOContext *pb, int len) { avio_w8(pb, 0x80 + 3); avio_wb24(pb, len); } /* * Get essence container ul index */ static int mxf_get_essence_container_ul_index(enum AVCodecID id) { int i; for (i = 0; mxf_essence_mappings[i].id; i++) if (mxf_essence_mappings[i].id == id) return mxf_essence_mappings[i].index; return -1; } static void mxf_write_primer_pack(AVFormatContext *s) { AVIOContext *pb = s->pb; int local_tag_number, i = 0; local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch); avio_write(pb, primer_pack_key, 16); klv_encode_ber_length(pb, local_tag_number * 18 + 8); avio_wb32(pb, local_tag_number); // local_tag num avio_wb32(pb, 18); // item size, always 18 according to the specs for (i = 0; i < local_tag_number; i++) { avio_wb16(pb, mxf_local_tag_batch[i].local_tag); avio_write(pb, mxf_local_tag_batch[i].uid, 16); } } static void mxf_write_local_tag(AVIOContext *pb, int size, int tag) { avio_wb16(pb, tag); avio_wb16(pb, size); } static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value) { avio_write(pb, header_metadata_key, 13); avio_wb24(pb, value); } static void mxf_free(AVFormatContext *s) { int i; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; av_freep(&st->priv_data); } } static const MXFCodecUL *mxf_get_data_definition_ul(int type) { const MXFCodecUL *uls = ff_mxf_data_definition_uls; while (uls->uid[0]) { if (type == uls->id) break; uls++; } return uls; } //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors #define DESCRIPTOR_COUNT(essence_container_count) \ (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count) static void mxf_write_essence_container_refs(AVFormatContext *s) { MXFContext *c = s->priv_data; AVIOContext *pb = s->pb; int i; mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count)); av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count); for (i = 0; i < c->essence_container_count; i++) { MXFStreamContext *sc = s->streams[i]->priv_data; avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16); } if (c->essence_container_count > 1) avio_write(pb, multiple_desc_ul, 16); } static void mxf_write_preface(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; mxf_write_metadata_key(pb, 0x012f00); PRINT_KEY(s, "preface key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count)); // write preface set uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, Preface, 0); PRINT_KEY(s, "preface uid", pb->buf_ptr - 16); // last modified date mxf_write_local_tag(pb, 8, 0x3B02); avio_wb64(pb, mxf->timestamp); // write version mxf_write_local_tag(pb, 2, 0x3B05); avio_wb16(pb, 258); // v1.2 // write identification_refs mxf_write_local_tag(pb, 16 + 8, 0x3B06); mxf_write_refs_count(pb, 1); mxf_write_uuid(pb, Identification, 0); // write content_storage_refs mxf_write_local_tag(pb, 16, 0x3B03); mxf_write_uuid(pb, ContentStorage, 0); // operational pattern mxf_write_local_tag(pb, 16, 0x3B09); avio_write(pb, op1a_ul, 16); // write essence_container_refs mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A); mxf_write_essence_container_refs(s); // write dm_scheme_refs mxf_write_local_tag(pb, 8, 0x3B0B); avio_wb64(pb, 0); } /* * Write a local tag containing an ascii string as utf-16 */ static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value) { int i, size = strlen(value); mxf_write_local_tag(pb, size*2, tag); for (i = 0; i < size; i++) avio_wb16(pb, value[i]); } static void mxf_write_identification(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; const char *company = "FFmpeg"; const char *product = "OP1a Muxer"; const char *version; int length; mxf_write_metadata_key(pb, 0x013000); PRINT_KEY(s, "identification key", pb->buf_ptr - 16); version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ? "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION); length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16 klv_encode_ber_length(pb, length); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, Identification, 0); PRINT_KEY(s, "identification uid", pb->buf_ptr - 16); // write generation uid mxf_write_local_tag(pb, 16, 0x3C09); mxf_write_uuid(pb, Identification, 1); mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String // write product uid mxf_write_local_tag(pb, 16, 0x3C05); mxf_write_uuid(pb, Identification, 2); // modification date mxf_write_local_tag(pb, 8, 0x3C06); avio_wb64(pb, mxf->timestamp); } static void mxf_write_content_storage(AVFormatContext *s) { AVIOContext *pb = s->pb; mxf_write_metadata_key(pb, 0x011800); PRINT_KEY(s, "content storage key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 92); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, ContentStorage, 0); PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16); // write package reference mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901); mxf_write_refs_count(pb, 2); mxf_write_uuid(pb, MaterialPackage, 0); mxf_write_uuid(pb, SourcePackage, 0); // write essence container data mxf_write_local_tag(pb, 8 + 16, 0x1902); mxf_write_refs_count(pb, 1); mxf_write_uuid(pb, EssenceContainerData, 0); } static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; MXFStreamContext *sc = st->priv_data; mxf_write_metadata_key(pb, 0x013b00); PRINT_KEY(s, "track key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 80); // write track uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index); PRINT_KEY(s, "track uid", pb->buf_ptr - 16); // write track id mxf_write_local_tag(pb, 4, 0x4801); avio_wb32(pb, st->index+2); // write track number mxf_write_local_tag(pb, 4, 0x4804); if (type == MaterialPackage) avio_wb32(pb, 0); // track number of material package is 0 else avio_write(pb, sc->track_essence_element_key + 12, 4); mxf_write_local_tag(pb, 8, 0x4B01); avio_wb32(pb, mxf->time_base.den); avio_wb32(pb, mxf->time_base.num); // write origin mxf_write_local_tag(pb, 8, 0x4B02); avio_wb64(pb, 0); // write sequence refs mxf_write_local_tag(pb, 16, 0x4803); mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index); } static const uint8_t smpte_12m_timecode_track_data_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x01,0x01,0x00,0x00,0x00 }; static void mxf_write_common_fields(AVFormatContext *s, AVStream *st) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; // find data define uls mxf_write_local_tag(pb, 16, 0x0201); if (st == mxf->timecode_track) avio_write(pb, smpte_12m_timecode_track_data_ul, 16); else { const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type); avio_write(pb, data_def_ul->uid, 16); } // write duration mxf_write_local_tag(pb, 8, 0x0202); avio_wb64(pb, mxf->duration); } static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; enum MXFMetadataSetType component; mxf_write_metadata_key(pb, 0x010f00); PRINT_KEY(s, "sequence key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 80); mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index); PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16); mxf_write_common_fields(s, st); // write structural component mxf_write_local_tag(pb, 16 + 8, 0x1001); mxf_write_refs_count(pb, 1); if (st == mxf->timecode_track) component = TimecodeComponent; else component = SourceClip; if (type == SourcePackage) component += TypeBottom; mxf_write_uuid(pb, component, st->index); } static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; mxf_write_metadata_key(pb, 0x011400); klv_encode_ber_length(pb, 75); // UID mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent : TimecodeComponent + TypeBottom, st->index); mxf_write_common_fields(s, st); // Start Time Code mxf_write_local_tag(pb, 8, 0x1501); avio_wb64(pb, mxf->tc.start); // Rounded Time Code Base mxf_write_local_tag(pb, 2, 0x1502); avio_wb16(pb, mxf->timecode_base); // Drop Frame mxf_write_local_tag(pb, 1, 0x1503); avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME)); } static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type) { AVIOContext *pb = s->pb; int i; mxf_write_metadata_key(pb, 0x011100); PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 108); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index); PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16); mxf_write_common_fields(s, st); // write start_position mxf_write_local_tag(pb, 8, 0x1201); avio_wb64(pb, 0); // write source package uid, end of the reference mxf_write_local_tag(pb, 32, 0x1101); if (type == SourcePackage) { for (i = 0; i < 4; i++) avio_wb64(pb, 0); } else mxf_write_umid(s, 1); // write source track id mxf_write_local_tag(pb, 4, 0x1102); if (type == SourcePackage) avio_wb32(pb, 0); else avio_wb32(pb, st->index+2); } static void mxf_write_multi_descriptor(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; const uint8_t *ul; int i; mxf_write_metadata_key(pb, 0x014400); PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams); mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, MultipleDescriptor, 0); PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16); // write sample rate mxf_write_local_tag(pb, 8, 0x3001); avio_wb32(pb, mxf->time_base.den); avio_wb32(pb, mxf->time_base.num); // write essence container ul mxf_write_local_tag(pb, 16, 0x3004); if (mxf->essence_container_count > 1) ul = multiple_desc_ul; else { MXFStreamContext *sc = s->streams[0]->priv_data; ul = mxf_essence_container_uls[sc->index].container_ul; } avio_write(pb, ul, 16); // write sub descriptor refs mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01); mxf_write_refs_count(pb, s->nb_streams); for (i = 0; i < s->nb_streams; i++) mxf_write_uuid(pb, SubDescriptor, i); } static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size) { MXFContext *mxf = s->priv_data; MXFStreamContext *sc = st->priv_data; AVIOContext *pb = s->pb; avio_write(pb, key, 16); klv_encode_ber4_length(pb, size+20+8+12+20); mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, SubDescriptor, st->index); mxf_write_local_tag(pb, 4, 0x3006); avio_wb32(pb, st->index+2); mxf_write_local_tag(pb, 8, 0x3001); avio_wb32(pb, mxf->time_base.den); avio_wb32(pb, mxf->time_base.num); mxf_write_local_tag(pb, 16, 0x3004); avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16); } static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }; static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }; static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }; static const UID mxf_cdci_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }; static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }; static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size) { MXFStreamContext *sc = st->priv_data; AVIOContext *pb = s->pb; int stored_height = (st->codec->height+15)/16*16; int display_height; int f1, f2; unsigned desc_size = size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20; if (sc->interlaced && sc->field_dominance) desc_size += 5; mxf_write_generic_desc(s, st, key, desc_size); mxf_write_local_tag(pb, 4, 0x3203); avio_wb32(pb, st->codec->width); mxf_write_local_tag(pb, 4, 0x3202); avio_wb32(pb, stored_height>>sc->interlaced); mxf_write_local_tag(pb, 4, 0x3209); avio_wb32(pb, st->codec->width); if (st->codec->height == 608) // PAL + VBI display_height = 576; else if (st->codec->height == 512) // NTSC + VBI display_height = 486; else display_height = st->codec->height; mxf_write_local_tag(pb, 4, 0x3208); avio_wb32(pb, display_height>>sc->interlaced); // component depth mxf_write_local_tag(pb, 4, 0x3301); avio_wb32(pb, sc->component_depth); // horizontal subsampling mxf_write_local_tag(pb, 4, 0x3302); avio_wb32(pb, 2); // frame layout mxf_write_local_tag(pb, 1, 0x320C); avio_w8(pb, sc->interlaced); // video line map switch (st->codec->height) { case 576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break; case 608: f1 = 7; f2 = 320; break; case 480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break; case 512: f1 = 7; f2 = 270; break; case 720: f1 = 26; f2 = 0; break; // progressive case 1080: f1 = 21; f2 = 584; break; default: f1 = 0; f2 = 0; break; } if (!sc->interlaced) { f2 = 0; f1 *= 2; } mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D); avio_wb32(pb, sc->interlaced ? 2 : 1); avio_wb32(pb, 4); avio_wb32(pb, f1); if (sc->interlaced) avio_wb32(pb, f2); mxf_write_local_tag(pb, 8, 0x320E); avio_wb32(pb, sc->aspect_ratio.num); avio_wb32(pb, sc->aspect_ratio.den); mxf_write_local_tag(pb, 16, 0x3201); avio_write(pb, *sc->codec_ul, 16); if (sc->interlaced && sc->field_dominance) { mxf_write_local_tag(pb, 1, 0x3212); avio_w8(pb, sc->field_dominance); } } static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st) { mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0); } static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st) { AVIOContext *pb = s->pb; int profile_and_level = (st->codec->profile<<4) | st->codec->level; mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5); // bit rate mxf_write_local_tag(pb, 4, 0x8000); avio_wb32(pb, st->codec->bit_rate); // profile and level mxf_write_local_tag(pb, 1, 0x8007); if (!st->codec->profile) profile_and_level |= 0x80; // escape bit avio_w8(pb, profile_and_level); } static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size) { AVIOContext *pb = s->pb; mxf_write_generic_desc(s, st, key, size+5+12+8+8); // audio locked mxf_write_local_tag(pb, 1, 0x3D02); avio_w8(pb, 1); // write audio sampling rate mxf_write_local_tag(pb, 8, 0x3D03); avio_wb32(pb, st->codec->sample_rate); avio_wb32(pb, 1); mxf_write_local_tag(pb, 4, 0x3D07); avio_wb32(pb, st->codec->channels); mxf_write_local_tag(pb, 4, 0x3D01); avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id)); } static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size) { AVIOContext *pb = s->pb; mxf_write_generic_sound_common(s, st, key, size+6+8); mxf_write_local_tag(pb, 2, 0x3D0A); avio_wb16(pb, st->codec->block_align); // avg bytes per sec mxf_write_local_tag(pb, 4, 0x3D09); avio_wb32(pb, st->codec->block_align*st->codec->sample_rate); } static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st) { mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0); } static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st) { mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0); } static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st) { mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0); } static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; int i, track_count = s->nb_streams+1; if (type == MaterialPackage) { mxf_write_metadata_key(pb, 0x013600); PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 92 + 16*track_count); } else { mxf_write_metadata_key(pb, 0x013700); PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference } // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type, 0); av_log(s,AV_LOG_DEBUG, "package type:%d\n", type); PRINT_KEY(s, "package uid", pb->buf_ptr - 16); // write package umid mxf_write_local_tag(pb, 32, 0x4401); mxf_write_umid(s, type == SourcePackage); PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16); // package creation date mxf_write_local_tag(pb, 8, 0x4405); avio_wb64(pb, mxf->timestamp); // package modified date mxf_write_local_tag(pb, 8, 0x4404); avio_wb64(pb, mxf->timestamp); // write track refs mxf_write_local_tag(pb, track_count*16 + 8, 0x4403); mxf_write_refs_count(pb, track_count); mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, -1); // timecode track for (i = 0; i < s->nb_streams; i++) mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i); // write multiple descriptor reference if (type == SourcePackage) { mxf_write_local_tag(pb, 16, 0x4701); if (s->nb_streams > 1) { mxf_write_uuid(pb, MultipleDescriptor, 0); mxf_write_multi_descriptor(s); } else mxf_write_uuid(pb, SubDescriptor, 0); } // write timecode track mxf_write_track(s, mxf->timecode_track, type); mxf_write_sequence(s, mxf->timecode_track, type); mxf_write_timecode_component(s, mxf->timecode_track, type); for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; mxf_write_track(s, st, type); mxf_write_sequence(s, st, type); mxf_write_structural_component(s, st, type); if (type == SourcePackage) { MXFStreamContext *sc = st->priv_data; mxf_essence_container_uls[sc->index].write_desc(s, st); } } } static int mxf_write_essence_container_data(AVFormatContext *s) { AVIOContext *pb = s->pb; mxf_write_metadata_key(pb, 0x012300); klv_encode_ber_length(pb, 72); mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID mxf_write_uuid(pb, EssenceContainerData, 0); mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID mxf_write_umid(s, 1); mxf_write_local_tag(pb, 4, 0x3F07); // BodySID avio_wb32(pb, 1); mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID avio_wb32(pb, 2); return 0; } static int mxf_write_header_metadata_sets(AVFormatContext *s) { mxf_write_preface(s); mxf_write_identification(s); mxf_write_content_storage(s); mxf_write_package(s, MaterialPackage); mxf_write_package(s, SourcePackage); mxf_write_essence_container_data(s); return 0; } static unsigned klv_fill_size(uint64_t size) { unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1)); if (pad < 20) // smallest fill item possible return pad + KAG_SIZE; else return pad & (KAG_SIZE-1); } static void mxf_write_index_table_segment(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; int i, j, temporal_reordering = 0; int key_index = mxf->last_key_index; av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count); if (!mxf->edit_units_count && !mxf->edit_unit_byte_count) return; avio_write(pb, index_table_segment_key, 16); if (mxf->edit_unit_byte_count) { klv_encode_ber_length(pb, 80); } else { klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 + 12+mxf->edit_units_count*(11+mxf->slice_count*4LL)); } // instance id mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, IndexTableSegment, 0); // index edit rate mxf_write_local_tag(pb, 8, 0x3F0B); avio_wb32(pb, mxf->time_base.den); avio_wb32(pb, mxf->time_base.num); // index start position mxf_write_local_tag(pb, 8, 0x3F0C); avio_wb64(pb, mxf->last_indexed_edit_unit); // index duration mxf_write_local_tag(pb, 8, 0x3F0D); if (mxf->edit_unit_byte_count) avio_wb64(pb, 0); // index table covers whole container else avio_wb64(pb, mxf->edit_units_count); // edit unit byte count mxf_write_local_tag(pb, 4, 0x3F05); avio_wb32(pb, mxf->edit_unit_byte_count); // index sid mxf_write_local_tag(pb, 4, 0x3F06); avio_wb32(pb, 2); // body sid mxf_write_local_tag(pb, 4, 0x3F07); avio_wb32(pb, 1); if (!mxf->edit_unit_byte_count) { // real slice count - 1 mxf_write_local_tag(pb, 1, 0x3F08); avio_w8(pb, mxf->slice_count); // delta entry array mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09); avio_wb32(pb, s->nb_streams+1); // num of entries avio_wb32(pb, 6); // size of one entry // write system item delta entry avio_w8(pb, 0); avio_w8(pb, 0); // slice entry avio_wb32(pb, 0); // element delta for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MXFStreamContext *sc = st->priv_data; avio_w8(pb, sc->temporal_reordering); if (sc->temporal_reordering) temporal_reordering = 1; if (i == 0) { // video track avio_w8(pb, 0); // slice number avio_wb32(pb, KAG_SIZE); // system item size including klv fill } else { // audio track unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size; audio_frame_size += klv_fill_size(audio_frame_size); avio_w8(pb, 1); avio_wb32(pb, (i-1)*audio_frame_size); // element delta } } mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A); avio_wb32(pb, mxf->edit_units_count); // num of entries avio_wb32(pb, 11+mxf->slice_count*4); // size of one entry for (i = 0; i < mxf->edit_units_count; i++) { int temporal_offset = 0; if (!(mxf->index_entries[i].flags & 0x33)) { // I frame mxf->last_key_index = key_index; key_index = i; } if (temporal_reordering) { int pic_num_in_gop = i - key_index; if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) { for (j = key_index; j < mxf->edit_units_count; j++) { if (pic_num_in_gop == mxf->index_entries[j].temporal_ref) break; } if (j == mxf->edit_units_count) av_log(s, AV_LOG_WARNING, "missing frames\n"); temporal_offset = j - key_index - pic_num_in_gop; } } avio_w8(pb, temporal_offset); if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction avio_w8(pb, mxf->last_key_index - i); } else { avio_w8(pb, key_index - i); // key frame offset if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward mxf->last_key_index = key_index; } if (!(mxf->index_entries[i].flags & 0x33) && // I frame mxf->index_entries[i].flags & 0x40 && !temporal_offset) mxf->index_entries[i].flags |= 0x80; // random access avio_w8(pb, mxf->index_entries[i].flags); // stream offset avio_wb64(pb, mxf->index_entries[i].offset); if (s->nb_streams > 1) avio_wb32(pb, mxf->index_entries[i].slice_offset); } mxf->last_key_index = key_index - mxf->edit_units_count; mxf->last_indexed_edit_unit += mxf->edit_units_count; mxf->edit_units_count = 0; } } static void mxf_write_klv_fill(AVFormatContext *s) { unsigned pad = klv_fill_size(avio_tell(s->pb)); if (pad) { avio_write(s->pb, klv_fill_key, 16); pad -= 16 + 4; klv_encode_ber4_length(s->pb, pad); for (; pad; pad--) avio_w8(s->pb, 0); av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1))); } } static void mxf_write_partition(AVFormatContext *s, int bodysid, int indexsid, const uint8_t *key, int write_metadata) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; int64_t header_byte_count_offset; unsigned index_byte_count = 0; uint64_t partition_offset = avio_tell(pb); if (!mxf->edit_unit_byte_count && mxf->edit_units_count) index_byte_count = 85 + 12+(s->nb_streams+1)*6 + 12+mxf->edit_units_count*(11+mxf->slice_count*4); else if (mxf->edit_unit_byte_count && indexsid) index_byte_count = 80; if (index_byte_count) { // add encoded ber length index_byte_count += 16 + klv_ber_length(index_byte_count); index_byte_count += klv_fill_size(index_byte_count); } if (!memcmp(key, body_partition_key, 16)) { mxf->body_partition_offset = av_realloc(mxf->body_partition_offset, (mxf->body_partitions_count+1)* sizeof(*mxf->body_partition_offset)); mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset; } // write klv avio_write(pb, key, 16); klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count)); // write partition value avio_wb16(pb, 1); // majorVersion avio_wb16(pb, 2); // minorVersion avio_wb32(pb, KAG_SIZE); // KAGSize avio_wb64(pb, partition_offset); // ThisPartition if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1) avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count) avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition else avio_wb64(pb, 0); avio_wb64(pb, mxf->footer_partition_offset); // footerPartition // set offset header_byte_count_offset = avio_tell(pb); avio_wb64(pb, 0); // headerByteCount, update later // indexTable avio_wb64(pb, index_byte_count); // indexByteCount avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID // BodyOffset if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) { avio_wb64(pb, mxf->body_offset); } else avio_wb64(pb, 0); avio_wb32(pb, bodysid); // bodySID // operational pattern avio_write(pb, op1a_ul, 16); // essence container mxf_write_essence_container_refs(s); if (write_metadata) { // mark the start of the headermetadata and calculate metadata size int64_t pos, start; unsigned header_byte_count; mxf_write_klv_fill(s); start = avio_tell(s->pb); mxf_write_primer_pack(s); mxf_write_header_metadata_sets(s); pos = avio_tell(s->pb); header_byte_count = pos - start + klv_fill_size(pos); // update header_byte_count avio_seek(pb, header_byte_count_offset, SEEK_SET); avio_wb64(pb, header_byte_count); avio_seek(pb, pos, SEEK_SET); } avio_flush(pb); } static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt) { MXFContext *mxf = s->priv_data; MXFStreamContext *sc = st->priv_data; int i, cid; uint8_t* header_cid; unsigned int frame_size = 0; if (mxf->header_written) return 1; if (pkt->size < 43) return -1; header_cid = pkt->data + 0x28; cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3]; if ((i = ff_dnxhd_get_cid_table(cid)) < 0) return -1; switch (cid) { case 1235: sc->index = 24; sc->component_depth = 10; break; case 1237: sc->index = 25; break; case 1238: sc->index = 26; break; case 1241: sc->index = 27; sc->component_depth = 10; break; case 1242: sc->index = 28; break; case 1243: sc->index = 29; break; case 1250: sc->index = 30; sc->component_depth = 10; break; case 1251: sc->index = 31; break; case 1252: sc->index = 32; break; case 1253: sc->index = 33; break; default: return -1; } frame_size = ff_dnxhd_cid_table[i].frame_size; sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul; sc->aspect_ratio = (AVRational){ 16, 9 }; mxf->edit_unit_byte_count = KAG_SIZE; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MXFStreamContext *sc = st->priv_data; if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size; mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count); } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { mxf->edit_unit_byte_count += 16 + 4 + frame_size; mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count); } } return 1; } static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt) { MXFContext *mxf = s->priv_data; MXFStreamContext *sc = st->priv_data; uint8_t *vs_pack, *vsc_pack; int i, ul_index, frame_size, stype, pal; if (mxf->header_written) return 1; // Check for minimal frame size if (pkt->size < 120000) return -1; vs_pack = pkt->data + 80*5 + 48; vsc_pack = pkt->data + 80*5 + 53; stype = vs_pack[3] & 0x1f; pal = (vs_pack[3] >> 5) & 0x1; if ((vs_pack[2] & 0x07) == 0x02) sc->aspect_ratio = (AVRational){ 16, 9 }; else sc->aspect_ratio = (AVRational){ 4, 3 }; sc->interlaced = (vsc_pack[3] >> 4) & 0x01; // TODO: fix dv encoder to set proper FF/FS value in VSC pack // and set field dominance accordingly // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6); switch (stype) { case 0x18: // DV100 720p ul_index = 6 + pal; frame_size = pal ? 288000 : 240000; if (sc->interlaced) { av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n"); sc->interlaced = 0; } break; case 0x14: // DV100 1080i ul_index = 4 + pal; frame_size = pal ? 576000 : 480000; break; case 0x04: // DV50 ul_index = 2 + pal; frame_size = pal ? 288000 : 240000; break; default: // DV25 ul_index = 0 + pal; frame_size = pal ? 144000 : 120000; } sc->index = ul_index + 16; sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul; mxf->edit_unit_byte_count = KAG_SIZE; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MXFStreamContext *sc = st->priv_data; if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size; mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count); } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { mxf->edit_unit_byte_count += 16 + 4 + frame_size; mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count); } } return 1; } static const UID mxf_mpeg2_codec_uls[] = { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP }; static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx) { int long_gop = avctx->gop_size > 1 || avctx->has_b_frames; if (avctx->profile == 4) { // Main if (avctx->level == 8) // Main return &mxf_mpeg2_codec_uls[0+long_gop]; else if (avctx->level == 4) // High return &mxf_mpeg2_codec_uls[4+long_gop]; else if (avctx->level == 6) // High 14 return &mxf_mpeg2_codec_uls[8+long_gop]; } else if (avctx->profile == 0) { // 422 if (avctx->level == 5) // Main return &mxf_mpeg2_codec_uls[2+long_gop]; else if (avctx->level == 2) // High return &mxf_mpeg2_codec_uls[6+long_gop]; } return NULL; } static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, MXFIndexEntry *e) { MXFStreamContext *sc = st->priv_data; uint32_t c = -1; int i; for(i = 0; i < pkt->size - 4; i++) { c = (c<<8) + pkt->data[i]; if (c == 0x1b5) { if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext st->codec->profile = pkt->data[i+1] & 0x07; st->codec->level = pkt->data[i+2] >> 4; } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame if (sc->interlaced) sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first break; } } else if (c == 0x1b8) { // gop if (pkt->data[i+4]>>6 & 0x01) { // closed sc->closed_gop = 1; if (e->flags & 0x40) // sequence header present e->flags |= 0x80; // random access } } else if (c == 0x1b3) { // seq e->flags |= 0x40; switch ((pkt->data[i+4]>>4) & 0xf) { case 2: sc->aspect_ratio = (AVRational){ 4, 3}; break; case 3: sc->aspect_ratio = (AVRational){ 16, 9}; break; case 4: sc->aspect_ratio = (AVRational){221,100}; break; default: av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den, st->codec->width, st->codec->height, 1024*1024); } } else if (c == 0x100) { // pic int pict_type = (pkt->data[i+2]>>3) & 0x07; e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6); if (pict_type == 2) { // P frame e->flags |= 0x22; sc->closed_gop = 0; // reset closed gop, don't matter anymore } else if (pict_type == 3) { // B frame if (sc->closed_gop) e->flags |= 0x13; // only backward prediction else e->flags |= 0x33; sc->temporal_reordering = -1; } else if (!pict_type) { av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n"); return 0; } } } if (s->oformat != &ff_mxf_d10_muxer) sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec); return !!sc->codec_ul; } static uint64_t mxf_parse_timestamp(time_t timestamp) { struct tm *time = gmtime(×tamp); if (!time) return 0; return (uint64_t)(time->tm_year+1900) << 48 | (uint64_t)(time->tm_mon+1) << 40 | (uint64_t) time->tm_mday << 32 | time->tm_hour << 24 | time->tm_min << 16 | time->tm_sec << 8; } static void mxf_gen_umid(AVFormatContext *s) { MXFContext *mxf = s->priv_data; uint32_t seed = av_get_random_seed(); uint64_t umid = seed + 0x5294713400000000LL; AV_WB64(mxf->umid , umid); AV_WB64(mxf->umid+8, umid>>8); mxf->instance_number = seed; } static int mxf_write_header(AVFormatContext *s) { MXFContext *mxf = s->priv_data; int i, ret; uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0}; const MXFSamplesPerFrame *spf = NULL; AVDictionaryEntry *t; int64_t timestamp = 0; AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0); if (!s->nb_streams) return -1; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MXFStreamContext *sc = av_mallocz(sizeof(*sc)); if (!sc) return AVERROR(ENOMEM); st->priv_data = sc; if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) { av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n"); return -1; } if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { AVRational rate, tbc = st->codec->time_base; // Default component depth to 8 sc->component_depth = 8; mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num; spf = ff_mxf_get_samples_per_frame(s, tbc); if (!spf) { av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n", tbc.den, tbc.num); return AVERROR(EINVAL); } mxf->time_base = spf->time_base; rate = av_inv_q(mxf->time_base); avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den); if (!tcr) tcr = av_dict_get(st->metadata, "timecode", NULL, 0); if (tcr) ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s); else ret = av_timecode_init(&mxf->tc, rate, 0, 0, s); if (ret < 0) return ret; if (s->oformat == &ff_mxf_d10_muxer) { if (st->codec->bit_rate == 50000000) { if (mxf->time_base.den == 25) sc->index = 3; else sc->index = 5; } else if (st->codec->bit_rate == 40000000) { if (mxf->time_base.den == 25) sc->index = 7; else sc->index = 9; } else if (st->codec->bit_rate == 30000000) { if (mxf->time_base.den == 25) sc->index = 11; else sc->index = 13; } else { av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n"); return -1; } mxf->edit_unit_byte_count = KAG_SIZE; // system element mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate * mxf->time_base.num / (8*mxf->time_base.den); mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count); mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4; mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count); } } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { if (st->codec->sample_rate != 48000) { av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n"); return -1; } avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); if (s->oformat == &ff_mxf_d10_muxer) { if (st->index != 1) { av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n"); return -1; } if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE && st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) { av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n"); } sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1; } else mxf->slice_count = 1; } if (!sc->index) { sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id); if (sc->index == -1) { av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, " "codec not currently supported in container\n", i); return -1; } } sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul; memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15); sc->track_essence_element_key[15] = present[sc->index]; PRINT_KEY(s, "track essence element key", sc->track_essence_element_key); if (!present[sc->index]) mxf->essence_container_count++; present[sc->index]++; } if (s->oformat == &ff_mxf_d10_muxer) { mxf->essence_container_count = 1; } if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) mxf_gen_umid(s); for (i = 0; i < s->nb_streams; i++) { MXFStreamContext *sc = s->streams[i]->priv_data; // update element count sc->track_essence_element_key[13] = present[sc->index]; if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13); else sc->order = AV_RB32(sc->track_essence_element_key+12); } if (t = av_dict_get(s->metadata, "creation_time", NULL, 0)) timestamp = ff_iso8601_to_unix_time(t->value); if (timestamp) mxf->timestamp = mxf_parse_timestamp(timestamp); mxf->duration = -1; mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track)); if (!mxf->timecode_track) return AVERROR(ENOMEM); mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext)); if (!mxf->timecode_track->priv_data) return AVERROR(ENOMEM); mxf->timecode_track->index = -1; if (!spf) spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 }); if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0) return -1; return 0; } static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 }; static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 }; static void mxf_write_system_item(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; unsigned frame; uint32_t time_code; frame = mxf->last_indexed_edit_unit + mxf->edit_units_count; // write system metadata pack avio_write(pb, system_metadata_pack_key, 16); klv_encode_ber4_length(pb, 57); avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present avio_w8(pb, 0x04); // content package rate avio_w8(pb, 0x00); // content package type avio_wb16(pb, 0x00); // channel handle avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow if (mxf->essence_container_count > 1) avio_write(pb, multiple_desc_ul, 16); else { MXFStreamContext *sc = s->streams[0]->priv_data; avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16); } avio_w8(pb, 0); avio_wb64(pb, 0); avio_wb64(pb, 0); // creation date/time stamp avio_w8(pb, 0x81); // SMPTE 12M time code time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame); avio_wb32(pb, time_code); avio_wb32(pb, 0); // binary group data avio_wb64(pb, 0); // write system metadata package set avio_write(pb, system_metadata_package_set_key, 16); klv_encode_ber4_length(pb, 35); avio_w8(pb, 0x83); // UMID avio_wb16(pb, 0x20); mxf_write_umid(s, 1); } static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num / (8*mxf->time_base.den); // frame size int pad; packet_size += 16 + 4; packet_size += klv_fill_size(packet_size); klv_encode_ber4_length(pb, pkt->size); avio_write(pb, pkt->data, pkt->size); // ensure CBR muxing by padding to correct video frame size pad = packet_size - pkt->size - 16 - 4; if (pad > 20) { avio_write(s->pb, klv_fill_key, 16); pad -= 16 + 4; klv_encode_ber4_length(s->pb, pad); for (; pad; pad--) avio_w8(s->pb, 0); av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1))); } else { av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n"); for (; pad > 0; pad--) avio_w8(s->pb, 0); } } static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; int frame_size = pkt->size / st->codec->block_align; uint8_t *samples = pkt->data; uint8_t *end = pkt->data + pkt->size; int i; klv_encode_ber4_length(pb, 4 + frame_size*4*8); avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1)); avio_wl16(pb, frame_size); avio_w8(pb, (1<<st->codec->channels)-1); while (samples < end) { for (i = 0; i < st->codec->channels; i++) { uint32_t sample; if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) { sample = AV_RL24(samples)<< 4; samples += 3; } else { sample = AV_RL16(samples)<<12; samples += 2; } avio_wl32(pb, sample | i); } for (; i < 8; i++) avio_wl32(pb, i); } } static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; AVStream *st = s->streams[pkt->stream_index]; MXFStreamContext *sc = st->priv_data; MXFIndexEntry ie = {0}; if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) { mxf->index_entries = av_realloc(mxf->index_entries, (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries)); if (!mxf->index_entries) { av_log(s, AV_LOG_ERROR, "could not allocate index entries\n"); return -1; } } if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) { if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) { av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n"); return -1; } } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) { if (!mxf_parse_dnxhd_frame(s, st, pkt)) { av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n"); return -1; } } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) { if (!mxf_parse_dv_frame(s, st, pkt)) { av_log(s, AV_LOG_ERROR, "could not get dv profile\n"); return -1; } } if (!mxf->header_written) { if (mxf->edit_unit_byte_count) { mxf_write_partition(s, 1, 2, header_open_partition_key, 1); mxf_write_klv_fill(s); mxf_write_index_table_segment(s); } else { mxf_write_partition(s, 0, 0, header_open_partition_key, 1); } mxf->header_written = 1; } if (st->index == 0) { if (!mxf->edit_unit_byte_count && (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) && !(ie.flags & 0x33)) { // I frame, Gop start mxf_write_klv_fill(s); mxf_write_partition(s, 1, 2, body_partition_key, 0); mxf_write_klv_fill(s); mxf_write_index_table_segment(s); } mxf_write_klv_fill(s); mxf_write_system_item(s); if (!mxf->edit_unit_byte_count) { mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset; mxf->index_entries[mxf->edit_units_count].flags = ie.flags; mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref; mxf->body_offset += KAG_SIZE; // size of system element } mxf->edit_units_count++; } else if (!mxf->edit_unit_byte_count && st->index == 1) { mxf->index_entries[mxf->edit_units_count-1].slice_offset = mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset; } mxf_write_klv_fill(s); avio_write(pb, sc->track_essence_element_key, 16); // write key if (s->oformat == &ff_mxf_d10_muxer) { if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) mxf_write_d10_video_packet(s, st, pkt); else mxf_write_d10_audio_packet(s, st, pkt); } else { klv_encode_ber4_length(pb, pkt->size); // write length avio_write(pb, pkt->data, pkt->size); mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size); } avio_flush(pb); return 0; } static void mxf_write_random_index_pack(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; uint64_t pos = avio_tell(pb); int i; avio_write(pb, random_index_pack_key, 16); klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count); if (mxf->edit_unit_byte_count) avio_wb32(pb, 1); // BodySID of header partition else avio_wb32(pb, 0); avio_wb64(pb, 0); // offset of header partition for (i = 0; i < mxf->body_partitions_count; i++) { avio_wb32(pb, 1); // BodySID avio_wb64(pb, mxf->body_partition_offset[i]); } avio_wb32(pb, 0); // BodySID of footer partition avio_wb64(pb, mxf->footer_partition_offset); avio_wb32(pb, avio_tell(pb) - pos + 4); } static int mxf_write_footer(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count; mxf_write_klv_fill(s); mxf->footer_partition_offset = avio_tell(pb); if (mxf->edit_unit_byte_count) { // no need to repeat index mxf_write_partition(s, 0, 0, footer_partition_key, 0); } else { mxf_write_partition(s, 0, 2, footer_partition_key, 0); mxf_write_klv_fill(s); mxf_write_index_table_segment(s); } mxf_write_klv_fill(s); mxf_write_random_index_pack(s); if (s->pb->seekable) { avio_seek(pb, 0, SEEK_SET); if (mxf->edit_unit_byte_count) { mxf_write_partition(s, 1, 2, header_closed_partition_key, 1); mxf_write_klv_fill(s); mxf_write_index_table_segment(s); } else { mxf_write_partition(s, 0, 0, header_closed_partition_key, 1); } } ff_audio_interleave_close(s); av_freep(&mxf->index_entries); av_freep(&mxf->body_partition_offset); av_freep(&mxf->timecode_track->priv_data); av_freep(&mxf->timecode_track); mxf_free(s); return 0; } static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush) { int i, stream_count = 0; for (i = 0; i < s->nb_streams; i++) stream_count += !!s->streams[i]->last_in_packet_buffer; if (stream_count && (s->nb_streams == stream_count || flush)) { AVPacketList *pktl = s->packet_buffer; if (s->nb_streams != stream_count) { AVPacketList *last = NULL; // find last packet in edit unit while (pktl) { if (!stream_count || pktl->pkt.stream_index == 0) break; last = pktl; pktl = pktl->next; stream_count--; } // purge packet queue while (pktl) { AVPacketList *next = pktl->next; if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl) s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL; av_free_packet(&pktl->pkt); av_freep(&pktl); pktl = next; } if (last) last->next = NULL; else { s->packet_buffer = NULL; s->packet_buffer_end= NULL; goto out; } pktl = s->packet_buffer; } *out = pktl->pkt; av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts); s->packet_buffer = pktl->next; if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl) s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL; if(!s->packet_buffer) s->packet_buffer_end= NULL; av_freep(&pktl); return 1; } else { out: av_init_packet(out); return 0; } } static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt) { MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data; MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data; return next->dts > pkt->dts || (next->dts == pkt->dts && sc->order < sc2->order); } static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush) { return ff_audio_rechunk_interleave(s, out, pkt, flush, mxf_interleave_get_packet, mxf_compare_timestamps); } AVOutputFormat ff_mxf_muxer = { .name = "mxf", .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"), .mime_type = "application/mxf", .extensions = "mxf", .priv_data_size = sizeof(MXFContext), .audio_codec = AV_CODEC_ID_PCM_S16LE, .video_codec = AV_CODEC_ID_MPEG2VIDEO, .write_header = mxf_write_header, .write_packet = mxf_write_packet, .write_trailer = mxf_write_footer, .flags = AVFMT_NOTIMESTAMPS, .interleave_packet = mxf_interleave, }; AVOutputFormat ff_mxf_d10_muxer = { .name = "mxf_d10", .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"), .mime_type = "application/mxf", .priv_data_size = sizeof(MXFContext), .audio_codec = AV_CODEC_ID_PCM_S16LE, .video_codec = AV_CODEC_ID_MPEG2VIDEO, .write_header = mxf_write_header, .write_packet = mxf_write_packet, .write_trailer = mxf_write_footer, .flags = AVFMT_NOTIMESTAMPS, .interleave_packet = mxf_interleave, };