git.sesse.net Git - ffmpeg/blob - libavformat/mxfenc.c

   1 /*
   2  * MXF muxer
   3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
   4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /*
  24  * signal_standard, color_siting, store_user_comments, sample rate and klv_fill_key version
  25  * fixes sponsored by NOA GmbH
  26  */
  27
  28 /*
  29  * References
  30  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  31  * SMPTE 377M MXF File Format Specifications
  32  * SMPTE 379M MXF Generic Container
  33  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  34  * SMPTE 422M Mapping JPEG 2000 Codestreams into the MXF Generic Container
  35  * SMPTE RP210: SMPTE Metadata Dictionary
  36  * SMPTE RP224: Registry of SMPTE Universal Labels
  37  */
  38
  39 #include <inttypes.h>
  40 #include <math.h>
  41 #include <time.h>
  42
  43 #include "libavutil/opt.h"
  44 #include "libavutil/random_seed.h"
  45 #include "libavutil/timecode.h"
  46 #include "libavutil/avassert.h"
  47 #include "libavutil/pixdesc.h"
  48 #include "libavutil/time_internal.h"
  49 #include "libavcodec/bytestream.h"
  50 #include "libavcodec/dnxhddata.h"
  51 #include "libavcodec/dv_profile.h"
  52 #include "libavcodec/h264.h"
  53 #include "libavcodec/internal.h"
  54 #include "audiointerleave.h"
  55 #include "avformat.h"
  56 #include "avio_internal.h"
  57 #include "internal.h"
  58 #include "mxf.h"
  59 #include "config.h"
  60
  61 extern AVOutputFormat ff_mxf_d10_muxer;
  62 extern AVOutputFormat ff_mxf_opatom_muxer;
  63
  64 #define EDIT_UNITS_PER_BODY 250
  65 #define KAG_SIZE 512
  66
  67 typedef struct MXFLocalTagPair {
  68     int local_tag;
  69     UID uid;
  70 } MXFLocalTagPair;
  71
  72 typedef struct MXFIndexEntry {
  73     uint8_t flags;
  74     uint64_t offset;
  75     unsigned slice_offset; ///< offset of audio slice
  76     uint16_t temporal_ref;
  77 } MXFIndexEntry;
  78
  79 typedef struct MXFStreamContext {
  80     AudioInterleaveContext aic;
  81     UID track_essence_element_key;
  82     int index;               ///< index in mxf_essence_container_uls table
  83     const UID *codec_ul;
  84     int order;               ///< interleaving order if dts are equal
  85     int interlaced;          ///< whether picture is interlaced
  86     int field_dominance;     ///< tff=1, bff=2
  87     int component_depth;
  88     int color_siting;
  89     int signal_standard;
  90     int h_chroma_sub_sample;
  91     int temporal_reordering;
  92     AVRational aspect_ratio; ///< display aspect ratio
  93     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  94     int video_bit_rate;
  95 } MXFStreamContext;
  96
  97 typedef struct MXFContainerEssenceEntry {
  98     UID container_ul;
  99     UID element_ul;
 100     UID codec_ul;
 101     void (*write_desc)(AVFormatContext *, AVStream *);
 102 } MXFContainerEssenceEntry;
 103
 104 typedef struct MXFPackage {
 105     char *name;
 106     enum MXFMetadataSetType type;
 107     int instance;
 108     struct MXFPackage *ref;
 109 } MXFPackage;
 110
 111 enum ULIndex {
 112     INDEX_MPEG2 = 0,
 113     INDEX_AES3,
 114     INDEX_WAV,
 115     INDEX_D10_625_50_50_VIDEO,
 116     INDEX_D10_625_50_50_AUDIO,
 117     INDEX_D10_525_60_50_VIDEO,
 118     INDEX_D10_525_60_50_AUDIO,
 119     INDEX_D10_625_50_40_VIDEO,
 120     INDEX_D10_625_50_40_AUDIO,
 121     INDEX_D10_525_60_40_VIDEO,
 122     INDEX_D10_525_60_40_AUDIO,
 123     INDEX_D10_625_50_30_VIDEO,
 124     INDEX_D10_625_50_30_AUDIO,
 125     INDEX_D10_525_60_30_VIDEO,
 126     INDEX_D10_525_60_30_AUDIO,
 127     INDEX_DV,
 128     INDEX_DV25_525_60,
 129     INDEX_DV25_625_50,
 130     INDEX_DV25_525_60_IEC,
 131     INDEX_DV25_625_50_IEC,
 132     INDEX_DV50_525_60,
 133     INDEX_DV50_625_50,
 134     INDEX_DV100_1080_60,
 135     INDEX_DV100_1080_50,
 136     INDEX_DV100_720_60,
 137     INDEX_DV100_720_50,
 138     INDEX_DNXHD_1080p_10bit_HIGH,
 139     INDEX_DNXHD_1080p_8bit_MEDIUM,
 140     INDEX_DNXHD_1080p_8bit_HIGH,
 141     INDEX_DNXHD_1080i_10bit_HIGH,
 142     INDEX_DNXHD_1080i_8bit_MEDIUM,
 143     INDEX_DNXHD_1080i_8bit_HIGH,
 144     INDEX_DNXHD_720p_10bit,
 145     INDEX_DNXHD_720p_8bit_HIGH,
 146     INDEX_DNXHD_720p_8bit_MEDIUM,
 147     INDEX_DNXHD_720p_8bit_LOW,
 148     INDEX_JPEG2000,
 149     INDEX_H264,
 150 };
 151
 152 static const struct {
 153     enum AVCodecID id;
 154     enum ULIndex index;
 155 } mxf_essence_mappings[] = {
 156     { AV_CODEC_ID_MPEG2VIDEO, INDEX_MPEG2 },
 157     { AV_CODEC_ID_PCM_S24LE,  INDEX_AES3 },
 158     { AV_CODEC_ID_PCM_S16LE,  INDEX_AES3 },
 159     { AV_CODEC_ID_DVVIDEO,    INDEX_DV },
 160     { AV_CODEC_ID_DNXHD,      INDEX_DNXHD_1080p_10bit_HIGH },
 161     { AV_CODEC_ID_JPEG2000,   INDEX_JPEG2000 },
 162     { AV_CODEC_ID_H264,       INDEX_H264 },
 163     { AV_CODEC_ID_NONE }
 164 };
 165
 166 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 167 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 168 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 169 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 170 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 171
 172 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 173     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 174       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 175       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 176       mxf_write_mpegvideo_desc },
 177     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 178       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 179       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 180       mxf_write_aes3_desc },
 181     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 182       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 183       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 184       mxf_write_wav_desc },
 185     // D-10 625/50 PAL 50mb/s
 186     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 187       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 188       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 189       mxf_write_cdci_desc },
 190     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 191       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 192       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 193       mxf_write_generic_sound_desc },
 194     // D-10 525/60 NTSC 50mb/s
 195     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 196       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 197       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 198       mxf_write_cdci_desc },
 199     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 200       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 201       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 202       mxf_write_generic_sound_desc },
 203     // D-10 625/50 PAL 40mb/s
 204     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 205       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 206       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 207       mxf_write_cdci_desc },
 208     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 209       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 210       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 211       mxf_write_generic_sound_desc },
 212     // D-10 525/60 NTSC 40mb/s
 213     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 214       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 215       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 216       mxf_write_cdci_desc },
 217     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 218       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 219       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 220       mxf_write_generic_sound_desc },
 221     // D-10 625/50 PAL 30mb/s
 222     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 223       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 224       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 225       mxf_write_cdci_desc },
 226     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 227       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 228       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 229       mxf_write_generic_sound_desc },
 230     // D-10 525/60 NTSC 30mb/s
 231     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 232       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 233       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 234       mxf_write_cdci_desc },
 235     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 236       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 237       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 238       mxf_write_generic_sound_desc },
 239     // DV Unknown
 240     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 241       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 242       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 243       mxf_write_cdci_desc },
 244
 245     // DV25 525/60
 246     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 247       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 248       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 249       mxf_write_cdci_desc },
 250     // DV25 625/50
 251     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 252       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 253       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 254       mxf_write_cdci_desc },
 255
 256     // IEC DV25 525/60
 257     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x01,0x01 },
 258       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 259       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 260       mxf_write_cdci_desc },
 261     // IEC DV25 625/50
 262     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x02,0x01 },
 263       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 264       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 },
 265       mxf_write_cdci_desc },
 266
 267       // DV50 525/60
 268     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 269       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 270       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 271       mxf_write_cdci_desc },
 272     // DV50 625/50
 273     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 274       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 275       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 276       mxf_write_cdci_desc },
 277     // DV100 1080/60
 278     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 279       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 280       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 281       mxf_write_cdci_desc },
 282     // DV100 1080/50
 283     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 284       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 285       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 286       mxf_write_cdci_desc },
 287     // DV100 720/60
 288     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 289       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 290       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 291       mxf_write_cdci_desc },
 292     // DV100 720/50
 293     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 294       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 295       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 296       mxf_write_cdci_desc },
 297     // DNxHD 1080p 10bit high
 298     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 299       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 300       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 301       mxf_write_cdci_desc },
 302     // DNxHD 1080p 8bit medium
 303     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 304       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 305       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 306       mxf_write_cdci_desc },
 307     // DNxHD 1080p 8bit high
 308     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 309       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 310       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 311       mxf_write_cdci_desc },
 312     // DNxHD 1080i 10bit high
 313     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 314       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 315       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 316       mxf_write_cdci_desc },
 317     // DNxHD 1080i 8bit medium
 318     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 319       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 320       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 321       mxf_write_cdci_desc },
 322     // DNxHD 1080i 8bit high
 323     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 324       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 325       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 326       mxf_write_cdci_desc },
 327     // DNxHD 720p 10bit
 328     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 329       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 330       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 331       mxf_write_cdci_desc },
 332     // DNxHD 720p 8bit high
 333     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 334       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 335       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 336       mxf_write_cdci_desc },
 337     // DNxHD 720p 8bit medium
 338     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 339       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 340       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 341       mxf_write_cdci_desc },
 342     // DNxHD 720p 8bit low
 343     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 344       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 345       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 346       mxf_write_cdci_desc },
 347     // JPEG2000
 348     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 349       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 350       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 351       mxf_write_cdci_desc },
 352     // H.264
 353     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 354       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 355       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 356       mxf_write_mpegvideo_desc },
 357     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 358       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 359       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 360       NULL },
 361 };
 362
 363 typedef struct MXFContext {
 364     AVClass *av_class;
 365     int64_t footer_partition_offset;
 366     int essence_container_count;
 367     AVRational time_base;
 368     int header_written;
 369     MXFIndexEntry *index_entries;
 370     unsigned edit_units_count;
 371     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 372     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 373     int last_indexed_edit_unit;
 374     uint64_t *body_partition_offset;
 375     unsigned body_partitions_count;
 376     int last_key_index;  ///< index of last key frame
 377     uint64_t duration;
 378     AVTimecode tc;       ///< timecode context
 379     AVStream *timecode_track;
 380     int timecode_base;       ///< rounded time code base (25 or 30)
 381     int edit_unit_byte_count; ///< fixed edit unit byte count
 382     uint64_t body_offset;
 383     uint32_t instance_number;
 384     uint8_t umid[16];        ///< unique material identifier
 385     int channel_count;
 386     int signal_standard;
 387     uint32_t tagged_value_count;
 388     AVRational audio_edit_rate;
 389     int store_user_comments;
 390     int track_instance_count; // used to generate MXFTrack uuids
 391 } MXFContext;
 392
 393 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 394 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 395
 396 /**
 397  * complete key for operation pattern, partitions, and primer pack
 398  */
 399 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 400 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 401 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 402 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 403 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 404 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 405 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
 406 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
 407 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 408 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 409
 410 /**
 411  * partial key for header metadata
 412  */
 413 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 414 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 415
 416 /**
 417  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 418  *             https://smpte-ra.org/sites/default/files/Labels.xml
 419  */
 420 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 421     // preface set
 422     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 423     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 424     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 425     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 426     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 427     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 428     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 429     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 430     // Identification
 431     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 432     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 433     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 434     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 435     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 436     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 437     // Content Storage
 438     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 439     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 440     // Essence Container Data
 441     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 442     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 443     // Package
 444     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 445     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 446     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 447     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 448     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 449     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 450     // Track
 451     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 452     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 453     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 454     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 455     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 456     // Sequence
 457     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 458     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 459     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 460     // Source Clip
 461     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 462     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 463     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 464     // Timecode Component
 465     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 466     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 467     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 468     // File Descriptor
 469     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 470     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 471     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 472     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 473     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 474     // Generic Picture Essence Descriptor
 475     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 476     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 477     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 478     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 479     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 480     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 481     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 482     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 483     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 484     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 485     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 486     // CDCI Picture Essence Descriptor
 487     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 488     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 489     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 490     // Generic Sound Essence Descriptor
 491     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 492     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 493     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 494     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 495     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 496     // Index Table Segment
 497     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 498     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 499     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 500     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 501     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 502     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 503     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 504     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 505     // MPEG video Descriptor
 506     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 507     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 508     // Wave Audio Essence Descriptor
 509     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 510     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 511 };
 512
 513 static const MXFLocalTagPair mxf_user_comments_local_tag[] = {
 514     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 515     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 516     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 517 };
 518
 519 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 520 {
 521     avio_write(pb, uuid_base, 12);
 522     avio_wb16(pb, type);
 523     avio_wb16(pb, value);
 524 }
 525
 526 static void mxf_write_umid(AVFormatContext *s, int type)
 527 {
 528     MXFContext *mxf = s->priv_data;
 529     avio_write(s->pb, umid_ul, 13);
 530     avio_wb24(s->pb, mxf->instance_number);
 531     avio_write(s->pb, mxf->umid, 15);
 532     avio_w8(s->pb, type);
 533 }
 534
 535 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 536 {
 537     avio_wb32(pb, ref_count);
 538     avio_wb32(pb, 16);
 539 }
 540
 541 static int klv_ber_length(uint64_t len)
 542 {
 543     if (len < 128)
 544         return 1;
 545     else
 546         return (av_log2(len) >> 3) + 2;
 547 }
 548
 549 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 550 {
 551     // Determine the best BER size
 552     int size;
 553     if (len < 128) {
 554         //short form
 555         avio_w8(pb, len);
 556         return 1;
 557     }
 558
 559     size = (av_log2(len) >> 3) + 1;
 560
 561     // long form
 562     avio_w8(pb, 0x80 + size);
 563     while(size) {
 564         size--;
 565         avio_w8(pb, len >> 8 * size & 0xff);
 566     }
 567     return 0;
 568 }
 569
 570 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 571 {
 572     avio_w8(pb, 0x80 + 3);
 573     avio_wb24(pb, len);
 574 }
 575
 576 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 577 {
 578     avio_w8(pb, 0x80 + 8);
 579     avio_wb64(pb, len);
 580 }
 581
 582 /*
 583  * Get essence container ul index
 584  */
 585 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 586 {
 587     int i;
 588     for (i = 0; mxf_essence_mappings[i].id; i++)
 589         if (mxf_essence_mappings[i].id == id)
 590             return mxf_essence_mappings[i].index;
 591     return -1;
 592 }
 593
 594 static void mxf_write_primer_pack(AVFormatContext *s)
 595 {
 596     MXFContext *mxf = s->priv_data;
 597     AVIOContext *pb = s->pb;
 598     int local_tag_number, i = 0;
 599
 600     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 601     local_tag_number += mxf->store_user_comments * FF_ARRAY_ELEMS(mxf_user_comments_local_tag);
 602
 603     avio_write(pb, primer_pack_key, 16);
 604     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 605
 606     avio_wb32(pb, local_tag_number); // local_tag num
 607     avio_wb32(pb, 18); // item size, always 18 according to the specs
 608
 609     for (i = 0; i < FF_ARRAY_ELEMS(mxf_local_tag_batch); i++) {
 610         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 611         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 612     }
 613     if (mxf->store_user_comments)
 614         for (i = 0; i < FF_ARRAY_ELEMS(mxf_user_comments_local_tag); i++) {
 615             avio_wb16(pb, mxf_user_comments_local_tag[i].local_tag);
 616             avio_write(pb, mxf_user_comments_local_tag[i].uid, 16);
 617         }
 618 }
 619
 620 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 621 {
 622     avio_wb16(pb, tag);
 623     avio_wb16(pb, size);
 624 }
 625
 626 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 627 {
 628     avio_write(pb, header_metadata_key, 13);
 629     avio_wb24(pb, value);
 630 }
 631
 632 static void mxf_free(AVFormatContext *s)
 633 {
 634     int i;
 635
 636     for (i = 0; i < s->nb_streams; i++) {
 637         AVStream *st = s->streams[i];
 638         av_freep(&st->priv_data);
 639     }
 640 }
 641
 642 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 643 {
 644     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 645     while (uls->uid[0]) {
 646         if (type == uls->id)
 647             break;
 648         uls++;
 649     }
 650     return uls;
 651 }
 652
 653 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 654 #define DESCRIPTOR_COUNT(essence_container_count) \
 655     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 656
 657 static void mxf_write_essence_container_refs(AVFormatContext *s)
 658 {
 659     MXFContext *c = s->priv_data;
 660     AVIOContext *pb = s->pb;
 661     int i;
 662
 663     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 664     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 665     for (i = 0; i < c->essence_container_count; i++) {
 666         MXFStreamContext *sc = s->streams[i]->priv_data;
 667         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 668     }
 669
 670     if (c->essence_container_count > 1)
 671         avio_write(pb, multiple_desc_ul, 16);
 672 }
 673
 674 static void mxf_write_preface(AVFormatContext *s)
 675 {
 676     MXFContext *mxf = s->priv_data;
 677     AVIOContext *pb = s->pb;
 678
 679     mxf_write_metadata_key(pb, 0x012f00);
 680     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 681     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 682
 683     // write preface set uid
 684     mxf_write_local_tag(pb, 16, 0x3C0A);
 685     mxf_write_uuid(pb, Preface, 0);
 686     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 687
 688     // last modified date
 689     mxf_write_local_tag(pb, 8, 0x3B02);
 690     avio_wb64(pb, mxf->timestamp);
 691
 692     // write version
 693     mxf_write_local_tag(pb, 2, 0x3B05);
 694     avio_wb16(pb, 259); // v1.3
 695
 696     // write identification_refs
 697     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 698     mxf_write_refs_count(pb, 1);
 699     mxf_write_uuid(pb, Identification, 0);
 700
 701     // write content_storage_refs
 702     mxf_write_local_tag(pb, 16, 0x3B03);
 703     mxf_write_uuid(pb, ContentStorage, 0);
 704
 705     // operational pattern
 706     mxf_write_local_tag(pb, 16, 0x3B09);
 707     if (s->oformat == &ff_mxf_opatom_muxer)
 708         avio_write(pb, opatom_ul, 16);
 709     else
 710         avio_write(pb, op1a_ul, 16);
 711
 712     // write essence_container_refs
 713     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 714     mxf_write_essence_container_refs(s);
 715
 716     // write dm_scheme_refs
 717     mxf_write_local_tag(pb, 8, 0x3B0B);
 718     avio_wb64(pb, 0);
 719 }
 720
 721 /*
 722  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 723  * from decoding the utf-8 string.
 724  */
 725 static uint64_t mxf_utf16len(const char *utf8_str)
 726 {
 727     const uint8_t *q = utf8_str;
 728     uint64_t size = 0;
 729     while (*q) {
 730         uint32_t ch;
 731         GET_UTF8(ch, *q++, goto invalid;)
 732         if (ch < 0x10000)
 733             size++;
 734         else
 735             size += 2;
 736         continue;
 737 invalid:
 738         av_log(NULL, AV_LOG_ERROR, "Invalid UTF8 sequence in mxf_utf16len\n\n");
 739     }
 740     size += 1;
 741     return size;
 742 }
 743
 744 /*
 745  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 746  */
 747 static int mxf_utf16_local_tag_length(const char *utf8_str)
 748 {
 749     uint64_t size;
 750
 751     if (!utf8_str)
 752         return 0;
 753
 754     size = mxf_utf16len(utf8_str);
 755     if (size >= UINT16_MAX/2) {
 756         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 757         return 0;
 758     }
 759
 760     return 4 + size * 2;
 761 }
 762
 763 /*
 764  * Write a local tag containing an utf-8 string as utf-16
 765  */
 766 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 767 {
 768     uint64_t size = mxf_utf16len(value);
 769
 770     if (size >= UINT16_MAX/2) {
 771         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 772         return;
 773     }
 774
 775     mxf_write_local_tag(pb, size*2, tag);
 776     avio_put_str16be(pb, value);
 777 }
 778
 779 static void mxf_write_identification(AVFormatContext *s)
 780 {
 781     MXFContext *mxf = s->priv_data;
 782     AVIOContext *pb = s->pb;
 783     const char *company = "FFmpeg";
 784     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 785     const char *version;
 786     int length;
 787
 788     mxf_write_metadata_key(pb, 0x013000);
 789     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 790
 791     version = s->flags & AVFMT_FLAG_BITEXACT ?
 792         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 793     length = 72 + mxf_utf16_local_tag_length(company) +
 794                   mxf_utf16_local_tag_length(product) +
 795                   mxf_utf16_local_tag_length(version);
 796     klv_encode_ber_length(pb, length);
 797
 798     // write uid
 799     mxf_write_local_tag(pb, 16, 0x3C0A);
 800     mxf_write_uuid(pb, Identification, 0);
 801     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 802
 803     // write generation uid
 804     mxf_write_local_tag(pb, 16, 0x3C09);
 805     mxf_write_uuid(pb, Identification, 1);
 806     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 807     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 808     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 809
 810     // write product uid
 811     mxf_write_local_tag(pb, 16, 0x3C05);
 812     mxf_write_uuid(pb, Identification, 2);
 813
 814     // modification date
 815     mxf_write_local_tag(pb, 8, 0x3C06);
 816     avio_wb64(pb, mxf->timestamp);
 817 }
 818
 819 static void mxf_write_content_storage(AVFormatContext *s, MXFPackage *packages, int package_count)
 820 {
 821     AVIOContext *pb = s->pb;
 822     int i;
 823
 824     mxf_write_metadata_key(pb, 0x011800);
 825     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 826     klv_encode_ber_length(pb, 60 + (16 * package_count));
 827
 828     // write uid
 829     mxf_write_local_tag(pb, 16, 0x3C0A);
 830     mxf_write_uuid(pb, ContentStorage, 0);
 831     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 832
 833     // write package reference
 834     mxf_write_local_tag(pb, 16 * package_count + 8, 0x1901);
 835     mxf_write_refs_count(pb, package_count);
 836     for (i = 0; i < package_count; i++) {
 837         mxf_write_uuid(pb, packages[i].type, packages[i].instance);
 838     }
 839
 840     // write essence container data
 841     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 842     mxf_write_refs_count(pb, 1);
 843     mxf_write_uuid(pb, EssenceContainerData, 0);
 844 }
 845
 846 static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *package)
 847 {
 848     MXFContext *mxf = s->priv_data;
 849     AVIOContext *pb = s->pb;
 850     MXFStreamContext *sc = st->priv_data;
 851
 852     mxf_write_metadata_key(pb, 0x013b00);
 853     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 854     klv_encode_ber_length(pb, 80);
 855
 856     // write track uid
 857     mxf_write_local_tag(pb, 16, 0x3C0A);
 858     mxf_write_uuid(pb, Track, mxf->track_instance_count);
 859     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 860
 861     // write track id
 862     mxf_write_local_tag(pb, 4, 0x4801);
 863     avio_wb32(pb, st->index+2);
 864
 865     // write track number
 866     mxf_write_local_tag(pb, 4, 0x4804);
 867     if (package->type == MaterialPackage)
 868         avio_wb32(pb, 0); // track number of material package is 0
 869     else
 870         avio_write(pb, sc->track_essence_element_key + 12, 4);
 871
 872     // write edit rate
 873     mxf_write_local_tag(pb, 8, 0x4B01);
 874
 875     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer) {
 876         avio_wb32(pb, mxf->tc.rate.num);
 877         avio_wb32(pb, mxf->tc.rate.den);
 878     } else {
 879         avio_wb32(pb, mxf->time_base.den);
 880         avio_wb32(pb, mxf->time_base.num);
 881     }
 882
 883     // write origin
 884     mxf_write_local_tag(pb, 8, 0x4B02);
 885     avio_wb64(pb, 0);
 886
 887     // write sequence refs
 888     mxf_write_local_tag(pb, 16, 0x4803);
 889     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 890 }
 891
 892 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 };
 893
 894 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 895 {
 896     MXFContext *mxf = s->priv_data;
 897     AVIOContext *pb = s->pb;
 898
 899     // find data define uls
 900     mxf_write_local_tag(pb, 16, 0x0201);
 901     if (st == mxf->timecode_track)
 902         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 903     else {
 904         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codecpar->codec_type);
 905         avio_write(pb, data_def_ul->uid, 16);
 906     }
 907
 908     // write duration
 909     mxf_write_local_tag(pb, 8, 0x0202);
 910
 911     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
 912         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 913     } else {
 914         avio_wb64(pb, mxf->duration);
 915     }
 916 }
 917
 918 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, MXFPackage *package)
 919 {
 920     MXFContext *mxf = s->priv_data;
 921     AVIOContext *pb = s->pb;
 922     enum MXFMetadataSetType component;
 923
 924     mxf_write_metadata_key(pb, 0x010f00);
 925     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 926     klv_encode_ber_length(pb, 80);
 927
 928     mxf_write_local_tag(pb, 16, 0x3C0A);
 929     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 930
 931     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 932     mxf_write_common_fields(s, st);
 933
 934     // write structural component
 935     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 936     mxf_write_refs_count(pb, 1);
 937     if (st == mxf->timecode_track)
 938         component = TimecodeComponent;
 939     else
 940         component = SourceClip;
 941
 942     mxf_write_uuid(pb, component, mxf->track_instance_count);
 943 }
 944
 945 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
 946 {
 947     MXFContext *mxf = s->priv_data;
 948     AVIOContext *pb = s->pb;
 949
 950     mxf_write_metadata_key(pb, 0x011400);
 951     klv_encode_ber_length(pb, 75);
 952
 953     // UID
 954     mxf_write_local_tag(pb, 16, 0x3C0A);
 955     mxf_write_uuid(pb, TimecodeComponent, mxf->track_instance_count);
 956
 957     mxf_write_common_fields(s, st);
 958
 959     // Start Time Code
 960     mxf_write_local_tag(pb, 8, 0x1501);
 961     avio_wb64(pb, mxf->tc.start);
 962
 963     // Rounded Time Code Base
 964     mxf_write_local_tag(pb, 2, 0x1502);
 965     avio_wb16(pb, mxf->timecode_base);
 966
 967     // Drop Frame
 968     mxf_write_local_tag(pb, 1, 0x1503);
 969     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 970 }
 971
 972 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
 973 {
 974     MXFContext *mxf = s->priv_data;
 975     AVIOContext *pb = s->pb;
 976     int i;
 977
 978     mxf_write_metadata_key(pb, 0x011100);
 979     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 980     klv_encode_ber_length(pb, 108);
 981
 982     // write uid
 983     mxf_write_local_tag(pb, 16, 0x3C0A);
 984     mxf_write_uuid(pb, SourceClip, mxf->track_instance_count);
 985
 986     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 987     mxf_write_common_fields(s, st);
 988
 989     // write start_position
 990     mxf_write_local_tag(pb, 8, 0x1201);
 991     avio_wb64(pb, 0);
 992
 993     // write source package uid, end of the reference
 994     mxf_write_local_tag(pb, 32, 0x1101);
 995     if (!package->ref) {
 996         for (i = 0; i < 4; i++)
 997             avio_wb64(pb, 0);
 998     } else
 999         mxf_write_umid(s, package->ref->instance);
1000
1001     // write source track id
1002     mxf_write_local_tag(pb, 4, 0x1102);
1003     if (package->type == SourcePackage && !package->ref)
1004         avio_wb32(pb, 0);
1005     else
1006         avio_wb32(pb, st->index+2);
1007 }
1008
1009 static void mxf_write_tape_descriptor(AVFormatContext *s)
1010 {
1011     AVIOContext *pb = s->pb;
1012
1013     mxf_write_metadata_key(pb, 0x012e00);
1014     PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);
1015     klv_encode_ber_length(pb, 20);
1016     mxf_write_local_tag(pb, 16, 0x3C0A);
1017     mxf_write_uuid(pb, TapeDescriptor, 0);
1018     PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);
1019 }
1020
1021
1022 static void mxf_write_multi_descriptor(AVFormatContext *s)
1023 {
1024     MXFContext *mxf = s->priv_data;
1025     AVIOContext *pb = s->pb;
1026     const uint8_t *ul;
1027     int i;
1028
1029     mxf_write_metadata_key(pb, 0x014400);
1030     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
1031     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
1032
1033     mxf_write_local_tag(pb, 16, 0x3C0A);
1034     mxf_write_uuid(pb, MultipleDescriptor, 0);
1035     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
1036
1037     // write sample rate
1038     mxf_write_local_tag(pb, 8, 0x3001);
1039     avio_wb32(pb, mxf->time_base.den);
1040     avio_wb32(pb, mxf->time_base.num);
1041
1042     // write essence container ul
1043     mxf_write_local_tag(pb, 16, 0x3004);
1044     if (mxf->essence_container_count > 1)
1045         ul = multiple_desc_ul;
1046     else {
1047         MXFStreamContext *sc = s->streams[0]->priv_data;
1048         ul = mxf_essence_container_uls[sc->index].container_ul;
1049     }
1050     avio_write(pb, ul, 16);
1051
1052     // write sub descriptor refs
1053     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
1054     mxf_write_refs_count(pb, s->nb_streams);
1055     for (i = 0; i < s->nb_streams; i++)
1056         mxf_write_uuid(pb, SubDescriptor, i);
1057 }
1058
1059 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1060 {
1061     MXFContext *mxf = s->priv_data;
1062     MXFStreamContext *sc = st->priv_data;
1063     AVIOContext *pb = s->pb;
1064
1065     avio_write(pb, key, 16);
1066     klv_encode_ber4_length(pb, size+20+8+12+20);
1067
1068     mxf_write_local_tag(pb, 16, 0x3C0A);
1069     mxf_write_uuid(pb, SubDescriptor, st->index);
1070
1071     mxf_write_local_tag(pb, 4, 0x3006);
1072     avio_wb32(pb, st->index+2);
1073
1074     mxf_write_local_tag(pb, 8, 0x3001);
1075     if (s->oformat == &ff_mxf_d10_muxer) {
1076         avio_wb32(pb, mxf->time_base.den);
1077         avio_wb32(pb, mxf->time_base.num);
1078     } else {
1079         if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE ||
1080             st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
1081             avio_wb32(pb, st->codecpar->sample_rate);
1082             avio_wb32(pb, 1);
1083         } else {
1084             avio_wb32(pb, mxf->time_base.den);
1085             avio_wb32(pb, mxf->time_base.num);
1086         }
1087     }
1088
1089     mxf_write_local_tag(pb, 16, 0x3004);
1090     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1091 }
1092
1093 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
1094 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
1095 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
1096 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
1097 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
1098
1099 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1100 {
1101     MXFStreamContext *sc = st->priv_data;
1102     AVIOContext *pb = s->pb;
1103     int stored_height = (st->codecpar->height+15)/16*16;
1104     int display_height;
1105     int f1, f2;
1106     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+4+12+20+5;
1107     if (sc->interlaced && sc->field_dominance)
1108         desc_size += 5;
1109     if (sc->signal_standard)
1110         desc_size += 5;
1111
1112     mxf_write_generic_desc(s, st, key, desc_size);
1113
1114     mxf_write_local_tag(pb, 4, 0x3203);
1115     avio_wb32(pb, st->codecpar->width);
1116
1117     mxf_write_local_tag(pb, 4, 0x3202);
1118     avio_wb32(pb, stored_height>>sc->interlaced);
1119
1120     mxf_write_local_tag(pb, 4, 0x3209);
1121     avio_wb32(pb, st->codecpar->width);
1122
1123     if (st->codecpar->height == 608) // PAL + VBI
1124         display_height = 576;
1125     else if (st->codecpar->height == 512)  // NTSC + VBI
1126         display_height = 486;
1127     else
1128         display_height = st->codecpar->height;
1129
1130     mxf_write_local_tag(pb, 4, 0x3208);
1131     avio_wb32(pb, display_height>>sc->interlaced);
1132
1133     // presentation Y offset
1134     mxf_write_local_tag(pb, 4, 0x320B);
1135     avio_wb32(pb, (st->codecpar->height - display_height)>>sc->interlaced);
1136
1137     // component depth
1138     mxf_write_local_tag(pb, 4, 0x3301);
1139     avio_wb32(pb, sc->component_depth);
1140
1141     // horizontal subsampling
1142     mxf_write_local_tag(pb, 4, 0x3302);
1143     avio_wb32(pb, sc->h_chroma_sub_sample);
1144
1145     // color siting
1146     mxf_write_local_tag(pb, 1, 0x3303);
1147     avio_w8(pb, sc->color_siting);
1148
1149     if (sc->signal_standard) {
1150         mxf_write_local_tag(pb, 1, 0x3215);
1151         avio_w8(pb, sc->signal_standard);
1152     }
1153
1154     // frame layout
1155     mxf_write_local_tag(pb, 1, 0x320C);
1156     avio_w8(pb, sc->interlaced);
1157
1158     // video line map
1159     switch (st->codecpar->height) {
1160     case  576: f1 = 23; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1161     case  608: f1 =  7; f2 = 320; break;
1162     case  480: f1 = 20; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1163     case  512: f1 =  7; f2 = 270; break;
1164     case  720: f1 = 26; f2 =   0; break; // progressive
1165     case 1080: f1 = 21; f2 = 584; break;
1166     default:   f1 =  0; f2 =   0; break;
1167     }
1168
1169     if (!sc->interlaced) {
1170         f2  = 0;
1171         f1 *= 2;
1172     }
1173
1174
1175     mxf_write_local_tag(pb, 16, 0x320D);
1176     avio_wb32(pb, 2);
1177     avio_wb32(pb, 4);
1178     avio_wb32(pb, f1);
1179     avio_wb32(pb, f2);
1180
1181     mxf_write_local_tag(pb, 8, 0x320E);
1182     avio_wb32(pb, sc->aspect_ratio.num);
1183     avio_wb32(pb, sc->aspect_ratio.den);
1184
1185     mxf_write_local_tag(pb, 16, 0x3201);
1186     avio_write(pb, *sc->codec_ul, 16);
1187
1188     if (sc->interlaced && sc->field_dominance) {
1189         mxf_write_local_tag(pb, 1, 0x3212);
1190         avio_w8(pb, sc->field_dominance);
1191     }
1192
1193 }
1194
1195 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1196 {
1197     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1198 }
1199
1200 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1201 {
1202     AVIOContext *pb = s->pb;
1203     MXFStreamContext *sc = st->priv_data;
1204     int profile_and_level = (st->codecpar->profile<<4) | st->codecpar->level;
1205
1206     if (st->codecpar->codec_id != AV_CODEC_ID_H264) {
1207         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1208
1209         // bit rate
1210         mxf_write_local_tag(pb, 4, 0x8000);
1211         avio_wb32(pb, sc->video_bit_rate);
1212
1213         // profile and level
1214         mxf_write_local_tag(pb, 1, 0x8007);
1215         if (!st->codecpar->profile)
1216             profile_and_level |= 0x80; // escape bit
1217         avio_w8(pb, profile_and_level);
1218     } else {
1219         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);
1220     }
1221 }
1222
1223 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1224 {
1225     AVIOContext *pb = s->pb;
1226     MXFContext *mxf = s->priv_data;
1227     int show_warnings = !mxf->footer_partition_offset;
1228     int duration_size = 0;
1229
1230     if (s->oformat == &ff_mxf_opatom_muxer)
1231         duration_size = 12;
1232
1233     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
1234
1235     if (duration_size > 0) {
1236         mxf_write_local_tag(pb, 8, 0x3002);
1237         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1238     }
1239
1240     // audio locked
1241     mxf_write_local_tag(pb, 1, 0x3D02);
1242     avio_w8(pb, 1);
1243
1244     // write audio sampling rate
1245     mxf_write_local_tag(pb, 8, 0x3D03);
1246     avio_wb32(pb, st->codecpar->sample_rate);
1247     avio_wb32(pb, 1);
1248
1249     mxf_write_local_tag(pb, 4, 0x3D07);
1250     if (mxf->channel_count == -1) {
1251         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codecpar->channels != 4) && (st->codecpar->channels != 8))
1252             av_log(s, AV_LOG_WARNING, "the number of audio channels shall be 4 or 8 : the output will not comply to MXF D-10 specs, use -d10_channelcount to fix this\n");
1253         avio_wb32(pb, st->codecpar->channels);
1254     } else if (s->oformat == &ff_mxf_d10_muxer) {
1255         if (show_warnings && (mxf->channel_count < st->codecpar->channels))
1256             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1257         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1258             av_log(s, AV_LOG_WARNING, "d10_channelcount shall be set to 4 or 8 : the output will not comply to MXF D-10 specs\n");
1259         avio_wb32(pb, mxf->channel_count);
1260     } else {
1261         avio_wb32(pb, st->codecpar->channels);
1262     }
1263
1264     mxf_write_local_tag(pb, 4, 0x3D01);
1265     avio_wb32(pb, av_get_bits_per_sample(st->codecpar->codec_id));
1266 }
1267
1268 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1269 {
1270     AVIOContext *pb = s->pb;
1271
1272     mxf_write_generic_sound_common(s, st, key, size+6+8);
1273
1274     mxf_write_local_tag(pb, 2, 0x3D0A);
1275     avio_wb16(pb, st->codecpar->block_align);
1276
1277     // avg bytes per sec
1278     mxf_write_local_tag(pb, 4, 0x3D09);
1279     avio_wb32(pb, st->codecpar->block_align*st->codecpar->sample_rate);
1280 }
1281
1282 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1283 {
1284     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1285 }
1286
1287 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1288 {
1289     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1290 }
1291
1292 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1293 {
1294     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1295 }
1296
1297 static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
1298
1299 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1300 {
1301     MXFContext *mxf = s->priv_data;
1302     AVIOContext *pb = s->pb;
1303     int name_size = mxf_utf16_local_tag_length(name);
1304     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1305
1306     if (!name_size || indirect_value_size == 13)
1307         return 1;
1308
1309     mxf_write_metadata_key(pb, 0x013f00);
1310     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1311
1312     // write instance UID
1313     mxf_write_local_tag(pb, 16, 0x3C0A);
1314     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1315
1316     // write name
1317     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1318
1319     // write indirect value
1320     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1321     avio_write(pb, mxf_indirect_value_utf16le, 17);
1322     avio_put_str16le(pb, value);
1323
1324     mxf->tagged_value_count++;
1325     return 0;
1326 }
1327
1328 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1329 {
1330     MXFContext *mxf = s->priv_data;
1331     AVDictionaryEntry *t = NULL;
1332     int count = 0;
1333
1334     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1335         if (mxf->tagged_value_count >= UINT16_MAX) {
1336             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1337             return count;
1338         }
1339
1340         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1341             count++;
1342     }
1343     return count;
1344 }
1345
1346 static void mxf_write_package(AVFormatContext *s, MXFPackage *package)
1347 {
1348     MXFContext *mxf = s->priv_data;
1349     AVIOContext *pb = s->pb;
1350     int i, track_count = s->nb_streams+1;
1351     int name_size = mxf_utf16_local_tag_length(package->name);
1352     int user_comment_count = 0;
1353
1354     if (package->type == MaterialPackage) {
1355         if (mxf->store_user_comments)
1356             user_comment_count = mxf_write_user_comments(s, s->metadata);
1357         mxf_write_metadata_key(pb, 0x013600);
1358         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1359         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);
1360     } else {
1361         mxf_write_metadata_key(pb, 0x013700);
1362         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1363         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference
1364     }
1365
1366     // write uid
1367     mxf_write_local_tag(pb, 16, 0x3C0A);
1368     mxf_write_uuid(pb, package->type, package->instance);
1369     av_log(s, AV_LOG_DEBUG, "package type:%d\n", package->type);
1370     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1371
1372     // write package umid
1373     mxf_write_local_tag(pb, 32, 0x4401);
1374     mxf_write_umid(s, package->instance);
1375     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1376
1377     // package name
1378     if (name_size)
1379         mxf_write_local_tag_utf16(pb, 0x4402, package->name);
1380
1381     // package creation date
1382     mxf_write_local_tag(pb, 8, 0x4405);
1383     avio_wb64(pb, mxf->timestamp);
1384
1385     // package modified date
1386     mxf_write_local_tag(pb, 8, 0x4404);
1387     avio_wb64(pb, mxf->timestamp);
1388
1389     // write track refs
1390     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1391     mxf_write_refs_count(pb, track_count);
1392     // these are the uuids of the tracks the will be written in mxf_write_track
1393     for (i = 0; i < track_count; i++)
1394         mxf_write_uuid(pb, Track,  mxf->track_instance_count + i);
1395
1396     // write user comment refs
1397     if (mxf->store_user_comments) {
1398         mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1399         mxf_write_refs_count(pb, user_comment_count);
1400         for (i = 0; i < user_comment_count; i++)
1401             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1402     }
1403
1404     // write multiple descriptor reference
1405     if (package->type == SourcePackage && package->instance == 1) {
1406         mxf_write_local_tag(pb, 16, 0x4701);
1407         if (s->nb_streams > 1) {
1408             mxf_write_uuid(pb, MultipleDescriptor, 0);
1409             mxf_write_multi_descriptor(s);
1410         } else
1411             mxf_write_uuid(pb, SubDescriptor, 0);
1412     } else if (package->type == SourcePackage && package->instance == 2) {
1413         mxf_write_local_tag(pb, 16, 0x4701);
1414         mxf_write_uuid(pb, TapeDescriptor, 0);
1415         mxf_write_tape_descriptor(s);
1416     }
1417
1418     /*
1419      * for every 1 track in a package there is 1 sequence and 1 component.
1420      * all 3 of these elements share the same instance number for generating
1421      * there instance uuids. mxf->track_instance_count stores this value.
1422      * mxf->track_instance_count is incremented after a group of all 3 of
1423      * these elements are written.
1424      */
1425
1426     // write timecode track
1427     mxf_write_track(s, mxf->timecode_track, package);
1428     mxf_write_sequence(s, mxf->timecode_track, package);
1429     mxf_write_timecode_component(s, mxf->timecode_track, package);
1430     mxf->track_instance_count++;
1431
1432     for (i = 0; i < s->nb_streams; i++) {
1433         AVStream *st = s->streams[i];
1434         mxf_write_track(s, st, package);
1435         mxf_write_sequence(s, st, package);
1436         mxf_write_structural_component(s, st, package);
1437         mxf->track_instance_count++;
1438
1439         if (package->type == SourcePackage && package->instance == 1) {
1440             MXFStreamContext *sc = st->priv_data;
1441             mxf_essence_container_uls[sc->index].write_desc(s, st);
1442         }
1443     }
1444 }
1445
1446 static int mxf_write_essence_container_data(AVFormatContext *s)
1447 {
1448     AVIOContext *pb = s->pb;
1449
1450     mxf_write_metadata_key(pb, 0x012300);
1451     klv_encode_ber_length(pb, 72);
1452
1453     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1454     mxf_write_uuid(pb, EssenceContainerData, 0);
1455
1456     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1457     mxf_write_umid(s, 1);
1458
1459     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1460     avio_wb32(pb, 1);
1461
1462     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1463     avio_wb32(pb, 2);
1464
1465     return 0;
1466 }
1467
1468 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1469 {
1470     MXFContext *mxf = s->priv_data;
1471     AVDictionaryEntry *entry = NULL;
1472     AVStream *st = NULL;
1473     int i;
1474     MXFPackage packages[3] = {{0}};
1475     int package_count = 2;
1476     packages[0].type = MaterialPackage;
1477     packages[1].type = SourcePackage;
1478     packages[1].instance = 1;
1479     packages[0].ref = &packages[1];
1480
1481
1482     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1483        packages[0].name = entry->value;
1484
1485     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1486         packages[1].name = entry->value;
1487     } else {
1488         /* check if any of the streams contain a file_package_name */
1489         for (i = 0; i < s->nb_streams; i++) {
1490             st = s->streams[i];
1491             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1492                 packages[1].name = entry->value;
1493                 break;
1494             }
1495         }
1496     }
1497
1498     entry = av_dict_get(s->metadata, "reel_name", NULL, 0);
1499     if (entry) {
1500         packages[2].name = entry->value;
1501         packages[2].type = SourcePackage;
1502         packages[2].instance = 2;
1503         packages[1].ref = &packages[2];
1504         package_count = 3;
1505     }
1506
1507     mxf_write_preface(s);
1508     mxf_write_identification(s);
1509     mxf_write_content_storage(s, packages, package_count);
1510     mxf->track_instance_count = 0;
1511     for (i = 0; i < package_count; i++)
1512         mxf_write_package(s, &packages[i]);
1513     mxf_write_essence_container_data(s);
1514     return 0;
1515 }
1516
1517 static unsigned klv_fill_size(uint64_t size)
1518 {
1519     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1520     if (pad < 20) // smallest fill item possible
1521         return pad + KAG_SIZE;
1522     else
1523         return pad & (KAG_SIZE-1);
1524 }
1525
1526 static void mxf_write_index_table_segment(AVFormatContext *s)
1527 {
1528     MXFContext *mxf = s->priv_data;
1529     AVIOContext *pb = s->pb;
1530     int i, j, temporal_reordering = 0;
1531     int key_index = mxf->last_key_index;
1532
1533     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1534
1535     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1536         return;
1537
1538     avio_write(pb, index_table_segment_key, 16);
1539
1540     if (mxf->edit_unit_byte_count) {
1541         klv_encode_ber_length(pb, 80);
1542     } else {
1543         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1544                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1545     }
1546
1547     // instance id
1548     mxf_write_local_tag(pb, 16, 0x3C0A);
1549     mxf_write_uuid(pb, IndexTableSegment, 0);
1550
1551     // index edit rate
1552     mxf_write_local_tag(pb, 8, 0x3F0B);
1553     avio_wb32(pb, mxf->time_base.den);
1554     avio_wb32(pb, mxf->time_base.num);
1555
1556     // index start position
1557     mxf_write_local_tag(pb, 8, 0x3F0C);
1558     avio_wb64(pb, mxf->last_indexed_edit_unit);
1559
1560     // index duration
1561     mxf_write_local_tag(pb, 8, 0x3F0D);
1562     if (mxf->edit_unit_byte_count)
1563         avio_wb64(pb, 0); // index table covers whole container
1564     else
1565         avio_wb64(pb, mxf->edit_units_count);
1566
1567     // edit unit byte count
1568     mxf_write_local_tag(pb, 4, 0x3F05);
1569     avio_wb32(pb, mxf->edit_unit_byte_count);
1570
1571     // index sid
1572     mxf_write_local_tag(pb, 4, 0x3F06);
1573     avio_wb32(pb, 2);
1574
1575     // body sid
1576     mxf_write_local_tag(pb, 4, 0x3F07);
1577     avio_wb32(pb, 1);
1578
1579     if (!mxf->edit_unit_byte_count) {
1580         // real slice count - 1
1581         mxf_write_local_tag(pb, 1, 0x3F08);
1582         avio_w8(pb, mxf->slice_count);
1583
1584         // delta entry array
1585         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1586         avio_wb32(pb, s->nb_streams+1); // num of entries
1587         avio_wb32(pb, 6);               // size of one entry
1588         // write system item delta entry
1589         avio_w8(pb, 0);
1590         avio_w8(pb, 0); // slice entry
1591         avio_wb32(pb, 0); // element delta
1592         for (i = 0; i < s->nb_streams; i++) {
1593             AVStream *st = s->streams[i];
1594             MXFStreamContext *sc = st->priv_data;
1595             avio_w8(pb, sc->temporal_reordering);
1596             if (sc->temporal_reordering)
1597                 temporal_reordering = 1;
1598             if (i == 0) { // video track
1599                 avio_w8(pb, 0); // slice number
1600                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1601             } else { // audio track
1602                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1603                 audio_frame_size += klv_fill_size(audio_frame_size);
1604                 avio_w8(pb, 1);
1605                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1606             }
1607         }
1608
1609         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1610         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1611         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1612
1613         for (i = 0; i < mxf->edit_units_count; i++) {
1614             int temporal_offset = 0;
1615
1616             if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame
1617                 mxf->last_key_index = key_index;
1618                 key_index = i;
1619             }
1620
1621             if (temporal_reordering) {
1622                 int pic_num_in_gop = i - key_index;
1623                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1624                     for (j = key_index; j < mxf->edit_units_count; j++) {
1625                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1626                             break;
1627                     }
1628                     if (j == mxf->edit_units_count)
1629                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1630                     temporal_offset = j - key_index - pic_num_in_gop;
1631                 }
1632             }
1633             avio_w8(pb, temporal_offset);
1634
1635             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1636                 avio_w8(pb, mxf->last_key_index - i);
1637             } else {
1638                 avio_w8(pb, key_index - i); // key frame offset
1639                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1640                     mxf->last_key_index = key_index;
1641             }
1642
1643             if (!(mxf->index_entries[i].flags & 0x33) && // I-frame
1644                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1645                 mxf->index_entries[i].flags |= 0x80; // random access
1646             avio_w8(pb, mxf->index_entries[i].flags);
1647             // stream offset
1648             avio_wb64(pb, mxf->index_entries[i].offset);
1649             if (s->nb_streams > 1)
1650                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1651         }
1652
1653         mxf->last_key_index = key_index - mxf->edit_units_count;
1654         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1655         mxf->edit_units_count = 0;
1656     }
1657 }
1658
1659 static void mxf_write_klv_fill(AVFormatContext *s)
1660 {
1661     unsigned pad = klv_fill_size(avio_tell(s->pb));
1662     if (pad) {
1663         avio_write(s->pb, klv_fill_key, 16);
1664         pad -= 16 + 4;
1665         klv_encode_ber4_length(s->pb, pad);
1666         ffio_fill(s->pb, 0, pad);
1667         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1668     }
1669 }
1670
1671 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1672                                 int indexsid,
1673                                 const uint8_t *key, int write_metadata)
1674 {
1675     MXFContext *mxf = s->priv_data;
1676     AVIOContext *pb = s->pb;
1677     int64_t header_byte_count_offset;
1678     unsigned index_byte_count = 0;
1679     uint64_t partition_offset = avio_tell(pb);
1680     int err;
1681
1682     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1683         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1684             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1685     else if (mxf->edit_unit_byte_count && indexsid)
1686         index_byte_count = 80;
1687
1688     if (index_byte_count) {
1689         // add encoded ber length
1690         index_byte_count += 16 + klv_ber_length(index_byte_count);
1691         index_byte_count += klv_fill_size(index_byte_count);
1692     }
1693
1694     if (key && !memcmp(key, body_partition_key, 16)) {
1695         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1696                                      sizeof(*mxf->body_partition_offset))) < 0) {
1697             mxf->body_partitions_count = 0;
1698             return err;
1699         }
1700         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1701     }
1702
1703     // write klv
1704     if (key)
1705         avio_write(pb, key, 16);
1706     else
1707         avio_write(pb, body_partition_key, 16);
1708
1709     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1710
1711     // write partition value
1712     avio_wb16(pb, 1); // majorVersion
1713     avio_wb16(pb, 3); // minorVersion
1714     avio_wb32(pb, KAG_SIZE); // KAGSize
1715
1716     avio_wb64(pb, partition_offset); // ThisPartition
1717
1718     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1719         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1720     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1721         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1722     else
1723         avio_wb64(pb, 0);
1724
1725     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1726
1727     // set offset
1728     header_byte_count_offset = avio_tell(pb);
1729     avio_wb64(pb, 0); // headerByteCount, update later
1730
1731     // indexTable
1732     avio_wb64(pb, index_byte_count); // indexByteCount
1733     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1734
1735     // BodyOffset
1736     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1737         avio_wb64(pb, mxf->body_offset);
1738     else
1739         avio_wb64(pb, 0);
1740
1741     avio_wb32(pb, bodysid); // bodySID
1742
1743     // operational pattern
1744     if (s->oformat == &ff_mxf_opatom_muxer)
1745         avio_write(pb, opatom_ul, 16);
1746     else
1747         avio_write(pb, op1a_ul, 16);
1748
1749     // essence container
1750     mxf_write_essence_container_refs(s);
1751
1752     if (write_metadata) {
1753         // mark the start of the headermetadata and calculate metadata size
1754         int64_t pos, start;
1755         unsigned header_byte_count;
1756
1757         mxf_write_klv_fill(s);
1758         start = avio_tell(s->pb);
1759         mxf_write_primer_pack(s);
1760         mxf_write_klv_fill(s);
1761         mxf_write_header_metadata_sets(s);
1762         pos = avio_tell(s->pb);
1763         header_byte_count = pos - start + klv_fill_size(pos);
1764
1765         // update header_byte_count
1766         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1767         avio_wb64(pb, header_byte_count);
1768         avio_seek(pb, pos, SEEK_SET);
1769     }
1770
1771     if(key)
1772         avio_flush(pb);
1773
1774     return 0;
1775 }
1776
1777 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1778 AVPacket *pkt)
1779 {
1780     MXFContext *mxf = s->priv_data;
1781     MXFStreamContext *sc = st->priv_data;
1782     int i, cid;
1783     uint8_t* header_cid;
1784     int frame_size = 0;
1785
1786     if (mxf->header_written)
1787         return 1;
1788
1789     if (pkt->size < 43)
1790         return -1;
1791
1792     header_cid = pkt->data + 0x28;
1793     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1794
1795     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1796         return -1;
1797     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
1798         return AVERROR_INVALIDDATA;
1799
1800     switch (cid) {
1801     case 1235:
1802         sc->index = INDEX_DNXHD_1080p_10bit_HIGH;
1803         sc->component_depth = 10;
1804         break;
1805     case 1237:
1806         sc->index = INDEX_DNXHD_1080p_8bit_MEDIUM;
1807         break;
1808     case 1238:
1809         sc->index = INDEX_DNXHD_1080p_8bit_HIGH;
1810         break;
1811     case 1241:
1812         sc->index = INDEX_DNXHD_1080i_10bit_HIGH;
1813         sc->component_depth = 10;
1814         break;
1815     case 1242:
1816         sc->index = INDEX_DNXHD_1080i_8bit_MEDIUM;
1817         break;
1818     case 1243:
1819         sc->index = INDEX_DNXHD_1080i_8bit_HIGH;
1820         break;
1821     case 1250:
1822         sc->index = INDEX_DNXHD_720p_10bit;
1823         sc->component_depth = 10;
1824         break;
1825     case 1251:
1826         sc->index = INDEX_DNXHD_720p_8bit_HIGH;
1827         break;
1828     case 1252:
1829         sc->index = INDEX_DNXHD_720p_8bit_MEDIUM;
1830         break;
1831     case 1253:
1832         sc->index = INDEX_DNXHD_720p_8bit_LOW;
1833         break;
1834     default:
1835         return -1;
1836     }
1837
1838     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1839     sc->aspect_ratio = (AVRational){ 16, 9 };
1840
1841     if (s->oformat == &ff_mxf_opatom_muxer) {
1842         mxf->edit_unit_byte_count = frame_size;
1843         return 1;
1844     }
1845
1846     mxf->edit_unit_byte_count = KAG_SIZE;
1847     for (i = 0; i < s->nb_streams; i++) {
1848         AVStream *st = s->streams[i];
1849         MXFStreamContext *sc = st->priv_data;
1850         if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1851             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1852             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1853         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1854             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1855             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1856         }
1857     }
1858
1859     return 1;
1860 }
1861
1862 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1863 {
1864     MXFContext *mxf = s->priv_data;
1865     MXFStreamContext *sc = st->priv_data;
1866     uint8_t *vs_pack, *vsc_pack;
1867     int i, ul_index, frame_size, stype, pal;
1868     const AVDVProfile *profile;
1869
1870     if (mxf->header_written)
1871         return 1;
1872
1873     // Check for minimal frame size
1874     if (pkt->size < 120000)
1875         return -1;
1876
1877     profile = av_dv_frame_profile(NULL, pkt->data, pkt->size);
1878
1879     vs_pack  = pkt->data + 80*5 + 48;
1880     vsc_pack = pkt->data + 80*5 + 53;
1881     stype    = vs_pack[3] & 0x1f;
1882     pal      = (vs_pack[3] >> 5) & 0x1;
1883
1884     if ((vsc_pack[2] & 0x07) == 0x02) {
1885         sc->aspect_ratio = (AVRational){ 16, 9 };
1886     } else {
1887         sc->aspect_ratio = (AVRational){ 4, 3 };
1888     }
1889
1890     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1891     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1892     // and set field dominance accordingly
1893     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1894
1895     switch (stype) {
1896     case 0x18: // DV100 720p
1897         ul_index = INDEX_DV100_720_50 + pal;
1898         frame_size = pal ? 288000 : 240000;
1899         if (sc->interlaced) {
1900             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1901             sc->interlaced = 0;
1902         }
1903         break;
1904     case 0x14: // DV100 1080i
1905         ul_index = INDEX_DV100_1080_50 + pal;
1906         frame_size = pal ? 576000 : 480000;
1907         break;
1908     case 0x04: // DV50
1909         ul_index = INDEX_DV50_525_60 + pal;
1910         frame_size = pal ? 288000 : 240000;
1911         break;
1912     default: // DV25
1913         if (profile && profile->pix_fmt == AV_PIX_FMT_YUV420P && pal) {
1914             ul_index = INDEX_DV25_525_60_IEC + pal;
1915             frame_size = pal ? 144000 : 120000;
1916             break;
1917         }
1918         ul_index = INDEX_DV25_525_60 + pal;
1919         frame_size = pal ? 144000 : 120000;
1920     }
1921
1922     sc->index = ul_index;
1923     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1924
1925     if(s->oformat == &ff_mxf_opatom_muxer) {
1926         mxf->edit_unit_byte_count = frame_size;
1927         return 1;
1928     }
1929
1930     mxf->edit_unit_byte_count = KAG_SIZE;
1931     for (i = 0; i < s->nb_streams; i++) {
1932         AVStream *st = s->streams[i];
1933         MXFStreamContext *sc = st->priv_data;
1934         if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1935             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1936             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1937         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1938             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1939             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1940         }
1941     }
1942
1943     return 1;
1944 }
1945
1946 static const struct {
1947     UID uid;
1948     int frame_size;
1949     int profile;
1950     uint8_t interlaced;
1951 } mxf_h264_codec_uls[] = {
1952     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 },      0,  66, 0 }, // AVC Baseline, Unconstrained Coding
1953     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra
1954     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60
1955     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50
1956     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30
1957     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25
1958     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60
1959     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50
1960     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra
1961     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60
1962     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50
1963     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30
1964     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25
1965     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60
1966     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50
1967 };
1968
1969 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
1970                                 AVPacket *pkt, MXFIndexEntry *e)
1971 {
1972     MXFContext *mxf = s->priv_data;
1973     MXFStreamContext *sc = st->priv_data;
1974     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);
1975     const uint8_t *buf = pkt->data;
1976     const uint8_t *buf_end = pkt->data + pkt->size;
1977     uint32_t state = -1;
1978     int extra_size = 512; // support AVC Intra files without SPS/PPS header
1979     int i, frame_size;
1980     uint8_t uid_found;
1981
1982     if (pkt->size > extra_size)
1983         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header
1984
1985     for (;;) {
1986         buf = avpriv_find_start_code(buf, buf_end, &state);
1987         if (buf >= buf_end)
1988             break;
1989         --buf;
1990         switch (state & 0x1f) {
1991         case H264_NAL_SPS:
1992             st->codecpar->profile = buf[1];
1993             e->flags |= 0x40;
1994             break;
1995         case H264_NAL_PPS:
1996             if (e->flags & 0x40) { // sequence header present
1997                 e->flags |= 0x80; // random access
1998                 extra_size = 0;
1999                 buf = buf_end;
2000             }
2001             break;
2002         default:
2003             break;
2004         }
2005     }
2006
2007     if (mxf->header_written)
2008         return 1;
2009
2010     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
2011     sc->component_depth = 10; // AVC Intra is always 10 Bit
2012     sc->interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
2013     if (sc->interlaced)
2014         sc->field_dominance = 1; // top field first is mandatory for AVC Intra
2015
2016     uid_found = 0;
2017     frame_size = pkt->size + extra_size;
2018     for (i = 0; i < mxf_h264_num_codec_uls; i++) {
2019         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
2020             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
2021             return 1;
2022         } else if (st->codecpar->profile == mxf_h264_codec_uls[i].profile) {
2023             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
2024             uid_found = 1;
2025         }
2026     }
2027
2028     if (!uid_found) {
2029         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");
2030         return 0;
2031     }
2032
2033     return 1;
2034 }
2035
2036 static const UID mxf_mpeg2_codec_uls[] = {
2037     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
2038     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
2039     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
2040     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
2041     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
2042     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
2043     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
2044     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
2045     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
2046     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
2047 };
2048
2049 static const UID *mxf_get_mpeg2_codec_ul(AVCodecParameters *par)
2050 {
2051     int long_gop = 1;
2052
2053     if (par->profile == 4) { // Main
2054         if (par->level == 8) // Main
2055             return &mxf_mpeg2_codec_uls[0+long_gop];
2056         else if (par->level == 4) // High
2057             return &mxf_mpeg2_codec_uls[4+long_gop];
2058         else if (par->level == 6) // High 14
2059             return &mxf_mpeg2_codec_uls[8+long_gop];
2060     } else if (par->profile == 0) { // 422
2061         if (par->level == 5) // Main
2062             return &mxf_mpeg2_codec_uls[2+long_gop];
2063         else if (par->level == 2) // High
2064             return &mxf_mpeg2_codec_uls[6+long_gop];
2065     }
2066     return NULL;
2067 }
2068
2069 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
2070                                  AVPacket *pkt, MXFIndexEntry *e)
2071 {
2072     MXFStreamContext *sc = st->priv_data;
2073     uint32_t c = -1;
2074     int i;
2075
2076     for(i = 0; i < pkt->size - 4; i++) {
2077         c = (c<<8) + pkt->data[i];
2078         if (c == 0x1b5) {
2079             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
2080                 st->codecpar->profile = pkt->data[i+1] & 0x07;
2081                 st->codecpar->level   = pkt->data[i+2] >> 4;
2082             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
2083                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
2084                 if (sc->interlaced)
2085                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
2086                 break;
2087             }
2088         } else if (c == 0x1b8) { // gop
2089             if (pkt->data[i+4]>>6 & 0x01) { // closed
2090                 sc->closed_gop = 1;
2091                 if (e->flags & 0x40) // sequence header present
2092                     e->flags |= 0x80; // random access
2093             }
2094         } else if (c == 0x1b3) { // seq
2095             e->flags |= 0x40;
2096             switch ((pkt->data[i+4]>>4) & 0xf) {
2097             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
2098             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
2099             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
2100             default:
2101                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2102                           st->codecpar->width, st->codecpar->height, 1024*1024);
2103             }
2104         } else if (c == 0x100) { // pic
2105             int pict_type = (pkt->data[i+2]>>3) & 0x07;
2106             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
2107             if (pict_type == 2) { // P-frame
2108                 e->flags |= 0x22;
2109                 sc->closed_gop = 0; // reset closed GOP, don't matter anymore
2110             } else if (pict_type == 3) { // B-frame
2111                 if (sc->closed_gop)
2112                     e->flags |= 0x13; // only backward prediction
2113                 else
2114                     e->flags |= 0x33;
2115                 sc->temporal_reordering = -1;
2116             } else if (!pict_type) {
2117                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
2118                 return 0;
2119             }
2120         }
2121     }
2122     if (s->oformat != &ff_mxf_d10_muxer)
2123         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);
2124     return !!sc->codec_ul;
2125 }
2126
2127 static uint64_t mxf_parse_timestamp(time_t timestamp)
2128 {
2129     struct tm tmbuf;
2130     struct tm *time = gmtime_r(&timestamp, &tmbuf);
2131     if (!time)
2132         return 0;
2133     return (uint64_t)(time->tm_year+1900) << 48 |
2134            (uint64_t)(time->tm_mon+1)     << 40 |
2135            (uint64_t) time->tm_mday       << 32 |
2136                       time->tm_hour       << 24 |
2137                       time->tm_min        << 16 |
2138                       time->tm_sec        << 8;
2139 }
2140
2141 static void mxf_gen_umid(AVFormatContext *s)
2142 {
2143     MXFContext *mxf = s->priv_data;
2144     uint32_t seed = av_get_random_seed();
2145     uint64_t umid = seed + 0x5294713400000000LL;
2146
2147     AV_WB64(mxf->umid  , umid);
2148     AV_WB64(mxf->umid+8, umid>>8);
2149
2150     mxf->instance_number = seed & 0xFFFFFF;
2151 }
2152
2153 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
2154 {
2155     MXFContext *mxf = s->priv_data;
2156     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2157     if (!tcr)
2158         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2159
2160     if (tcr)
2161         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2162     else
2163         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2164 }
2165
2166 static int mxf_write_header(AVFormatContext *s)
2167 {
2168     MXFContext *mxf = s->priv_data;
2169     int i, ret;
2170     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2171     const MXFSamplesPerFrame *spf = NULL;
2172     int64_t timestamp = 0;
2173
2174     if (!s->nb_streams)
2175         return -1;
2176
2177     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {
2178         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2179         return -1;
2180     }
2181
2182     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))
2183         mxf->store_user_comments = 0;
2184
2185     for (i = 0; i < s->nb_streams; i++) {
2186         AVStream *st = s->streams[i];
2187         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2188         if (!sc)
2189             return AVERROR(ENOMEM);
2190         st->priv_data = sc;
2191
2192         if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2193             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2194             return -1;
2195         }
2196
2197         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2198             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codecpar->format);
2199             // TODO: should be avg_frame_rate
2200             AVRational rate, tbc = st->time_base;
2201             // Default component depth to 8
2202             sc->component_depth = 8;
2203             sc->h_chroma_sub_sample = 2;
2204             sc->color_siting = 0xFF;
2205
2206             if (pix_desc) {
2207                 sc->component_depth     = pix_desc->comp[0].depth;
2208                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2209             }
2210             switch (ff_choose_chroma_location(s, st)) {
2211             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2212             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2213             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2214             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2215             }
2216
2217             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2218             spf = ff_mxf_get_samples_per_frame(s, tbc);
2219             if (!spf) {
2220                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2221                        tbc.den, tbc.num);
2222                 return AVERROR(EINVAL);
2223             }
2224             mxf->time_base = spf->time_base;
2225             rate = av_inv_q(mxf->time_base);
2226             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2227             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2228                 return ret;
2229
2230             sc->video_bit_rate = st->codecpar->bit_rate;
2231             if (s->oformat == &ff_mxf_d10_muxer) {
2232                 if (st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
2233                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support MPEG-2 Video\n");
2234                     return AVERROR(EINVAL);
2235                 }
2236                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2237                     sc->index = INDEX_D10_625_50_50_VIDEO;
2238                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {
2239                     sc->index = INDEX_D10_525_60_50_VIDEO;
2240                 } else if (sc->video_bit_rate == 40000000) {
2241                     if (mxf->time_base.den == 25) sc->index = INDEX_D10_625_50_40_VIDEO;
2242                     else                          sc->index = INDEX_D10_525_60_40_VIDEO;
2243                 } else if (sc->video_bit_rate == 30000000) {
2244                     if (mxf->time_base.den == 25) sc->index = INDEX_D10_625_50_30_VIDEO;
2245                     else                          sc->index = INDEX_D10_525_60_30_VIDEO;
2246                 } else {
2247                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2248                     return -1;
2249                 }
2250
2251                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
2252                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
2253                     mxf->time_base.num / (8*mxf->time_base.den);
2254                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2255                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
2256                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2257
2258                 sc->signal_standard = 1;
2259             }
2260             if (mxf->signal_standard >= 0)
2261                 sc->signal_standard = mxf->signal_standard;
2262         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2263             if (st->codecpar->sample_rate != 48000) {
2264                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2265                 return -1;
2266             }
2267             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
2268             if (s->oformat == &ff_mxf_d10_muxer) {
2269                 if (st->index != 1) {
2270                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2271                     return -1;
2272                 }
2273                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2274                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2275                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2276                 }
2277                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2278             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2279                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2280
2281                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2282                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2283                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2284                     return AVERROR_PATCHWELCOME;
2285                 }
2286                 if (st->codecpar->channels != 1) {
2287                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2288                     return AVERROR(EINVAL);
2289                 }
2290
2291                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2292                 if (!spf) {
2293                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2294                     return AVERROR(EINVAL);
2295                 }
2296
2297                 mxf->time_base = st->time_base;
2298                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2299                     return ret;
2300
2301                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2302                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
2303                 sc->index = INDEX_WAV;
2304             } else {
2305                 mxf->slice_count = 1;
2306             }
2307         }
2308
2309         if (!sc->index) {
2310             sc->index = mxf_get_essence_container_ul_index(st->codecpar->codec_id);
2311             if (sc->index == -1) {
2312                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2313                        "codec not currently supported in container\n", i);
2314                 return -1;
2315             }
2316         }
2317
2318         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2319
2320         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2321         sc->track_essence_element_key[15] = present[sc->index];
2322         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2323
2324         if (!present[sc->index])
2325             mxf->essence_container_count++;
2326         present[sc->index]++;
2327     }
2328
2329     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2330         mxf->essence_container_count = 1;
2331     }
2332
2333     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2334         mxf_gen_umid(s);
2335
2336     for (i = 0; i < s->nb_streams; i++) {
2337         MXFStreamContext *sc = s->streams[i]->priv_data;
2338         // update element count
2339         sc->track_essence_element_key[13] = present[sc->index];
2340         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2341             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2342         else
2343             sc->order = AV_RB32(sc->track_essence_element_key+12);
2344     }
2345
2346     if (ff_parse_creation_time_metadata(s, &timestamp, 1) > 0)
2347         mxf->timestamp = mxf_parse_timestamp(timestamp);
2348     mxf->duration = -1;
2349
2350     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2351     if (!mxf->timecode_track)
2352         return AVERROR(ENOMEM);
2353     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2354     if (!mxf->timecode_track->priv_data)
2355         return AVERROR(ENOMEM);
2356     mxf->timecode_track->index = -1;
2357
2358     if (!spf)
2359         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2360
2361     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2362         return -1;
2363
2364     return 0;
2365 }
2366
2367 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2368 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 };
2369
2370 static void mxf_write_system_item(AVFormatContext *s)
2371 {
2372     MXFContext *mxf = s->priv_data;
2373     AVIOContext *pb = s->pb;
2374     unsigned frame;
2375     uint32_t time_code;
2376
2377     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2378
2379     // write system metadata pack
2380     avio_write(pb, system_metadata_pack_key, 16);
2381     klv_encode_ber4_length(pb, 57);
2382     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
2383     avio_w8(pb, 0x04); // content package rate
2384     avio_w8(pb, 0x00); // content package type
2385     avio_wb16(pb, 0x00); // channel handle
2386     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2387     if (mxf->essence_container_count > 1)
2388         avio_write(pb, multiple_desc_ul, 16);
2389     else {
2390         MXFStreamContext *sc = s->streams[0]->priv_data;
2391         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2392     }
2393     avio_w8(pb, 0);
2394     avio_wb64(pb, 0);
2395     avio_wb64(pb, 0); // creation date/time stamp
2396
2397     avio_w8(pb, 0x81); // SMPTE 12M time code
2398     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2399     avio_wb32(pb, time_code);
2400     avio_wb32(pb, 0); // binary group data
2401     avio_wb64(pb, 0);
2402
2403     // write system metadata package set
2404     avio_write(pb, system_metadata_package_set_key, 16);
2405     klv_encode_ber4_length(pb, 35);
2406     avio_w8(pb, 0x83); // UMID
2407     avio_wb16(pb, 0x20);
2408     mxf_write_umid(s, 1);
2409 }
2410
2411 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2412 {
2413     MXFContext *mxf = s->priv_data;
2414     AVIOContext *pb = s->pb;
2415     MXFStreamContext *sc = st->priv_data;
2416     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
2417         (8*mxf->time_base.den); // frame size
2418     int pad;
2419
2420     packet_size += 16 + 4;
2421     packet_size += klv_fill_size(packet_size);
2422
2423     klv_encode_ber4_length(pb, pkt->size);
2424     avio_write(pb, pkt->data, pkt->size);
2425
2426     // ensure CBR muxing by padding to correct video frame size
2427     pad = packet_size - pkt->size - 16 - 4;
2428     if (pad > 20) {
2429         avio_write(s->pb, klv_fill_key, 16);
2430         pad -= 16 + 4;
2431         klv_encode_ber4_length(s->pb, pad);
2432         ffio_fill(s->pb, 0, pad);
2433         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
2434     } else {
2435         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
2436         ffio_fill(s->pb, 0, pad);
2437     }
2438 }
2439
2440 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2441 {
2442     MXFContext *mxf = s->priv_data;
2443     AVIOContext *pb = s->pb;
2444     int frame_size = pkt->size / st->codecpar->block_align;
2445     uint8_t *samples = pkt->data;
2446     uint8_t *end = pkt->data + pkt->size;
2447     int i;
2448
2449     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2450
2451     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2452     avio_wl16(pb, frame_size);
2453     avio_w8(pb, (1<<st->codecpar->channels)-1);
2454
2455     while (samples < end) {
2456         for (i = 0; i < st->codecpar->channels; i++) {
2457             uint32_t sample;
2458             if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
2459                 sample = AV_RL24(samples)<< 4;
2460                 samples += 3;
2461             } else {
2462                 sample = AV_RL16(samples)<<12;
2463                 samples += 2;
2464             }
2465             avio_wl32(pb, sample | i);
2466         }
2467         for (; i < 8; i++)
2468             avio_wl32(pb, i);
2469     }
2470 }
2471
2472 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2473 {
2474     MXFContext *mxf = s->priv_data;
2475     AVIOContext *pb = s->pb;
2476     AVStream *st = s->streams[0];
2477     MXFStreamContext *sc = st->priv_data;
2478     const uint8_t *key = NULL;
2479
2480     int err;
2481
2482     if (!mxf->header_written)
2483         key = body_partition_key;
2484
2485     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2486         return err;
2487     mxf_write_klv_fill(s);
2488     avio_write(pb, sc->track_essence_element_key, 16);
2489     klv_encode_ber9_length(pb, mxf->body_offset);
2490     return 0;
2491 }
2492
2493 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2494 {
2495     MXFContext *mxf = s->priv_data;
2496     AVIOContext *pb = s->pb;
2497
2498     int err;
2499
2500     if (!mxf->header_written) {
2501         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2502             return err;
2503         mxf_write_klv_fill(s);
2504
2505         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2506             return err;
2507         mxf->header_written = 1;
2508     }
2509
2510     if (!mxf->edit_unit_byte_count) {
2511         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2512         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2513         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2514     }
2515     mxf->edit_units_count++;
2516     avio_write(pb, pkt->data, pkt->size);
2517     mxf->body_offset += pkt->size;
2518     avio_flush(pb);
2519
2520     return 0;
2521 }
2522
2523 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2524 {
2525     MXFContext *mxf = s->priv_data;
2526     AVIOContext *pb = s->pb;
2527     AVStream *st = s->streams[pkt->stream_index];
2528     MXFStreamContext *sc = st->priv_data;
2529     MXFIndexEntry ie = {0};
2530     int err;
2531
2532     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2533         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2534                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2535             mxf->edit_units_count = 0;
2536             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2537             return err;
2538         }
2539     }
2540
2541     if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2542         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2543             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2544             return -1;
2545         }
2546     } else if (st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
2547         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2548             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2549             return -1;
2550         }
2551     } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
2552         if (!mxf_parse_dv_frame(s, st, pkt)) {
2553             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2554             return -1;
2555         }
2556     } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2557         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2558             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2559             return -1;
2560         }
2561     }
2562
2563     if (s->oformat == &ff_mxf_opatom_muxer)
2564         return mxf_write_opatom_packet(s, pkt, &ie);
2565
2566     if (!mxf->header_written) {
2567         if (mxf->edit_unit_byte_count) {
2568             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2569                 return err;
2570             mxf_write_klv_fill(s);
2571             mxf_write_index_table_segment(s);
2572         } else {
2573             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2574                 return err;
2575         }
2576         mxf->header_written = 1;
2577     }
2578
2579     if (st->index == 0) {
2580         if (!mxf->edit_unit_byte_count &&
2581             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2582             !(ie.flags & 0x33)) { // I-frame, GOP start
2583             mxf_write_klv_fill(s);
2584             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2585                 return err;
2586             mxf_write_klv_fill(s);
2587             mxf_write_index_table_segment(s);
2588         }
2589
2590         mxf_write_klv_fill(s);
2591         mxf_write_system_item(s);
2592
2593         if (!mxf->edit_unit_byte_count) {
2594             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2595             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2596             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2597             mxf->body_offset += KAG_SIZE; // size of system element
2598         }
2599         mxf->edit_units_count++;
2600     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2601         if (!mxf->edit_units_count) {
2602             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
2603             return AVERROR_PATCHWELCOME;
2604         }
2605         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2606             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2607     }
2608
2609     mxf_write_klv_fill(s);
2610     avio_write(pb, sc->track_essence_element_key, 16); // write key
2611     if (s->oformat == &ff_mxf_d10_muxer) {
2612         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
2613             mxf_write_d10_video_packet(s, st, pkt);
2614         else
2615             mxf_write_d10_audio_packet(s, st, pkt);
2616     } else {
2617         klv_encode_ber4_length(pb, pkt->size); // write length
2618         avio_write(pb, pkt->data, pkt->size);
2619         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2620     }
2621
2622     avio_flush(pb);
2623
2624     return 0;
2625 }
2626
2627 static void mxf_write_random_index_pack(AVFormatContext *s)
2628 {
2629     MXFContext *mxf = s->priv_data;
2630     AVIOContext *pb = s->pb;
2631     uint64_t pos = avio_tell(pb);
2632     int i;
2633
2634     avio_write(pb, random_index_pack_key, 16);
2635     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2636
2637     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
2638         avio_wb32(pb, 1); // BodySID of header partition
2639     else
2640         avio_wb32(pb, 0);
2641     avio_wb64(pb, 0); // offset of header partition
2642
2643     for (i = 0; i < mxf->body_partitions_count; i++) {
2644         avio_wb32(pb, 1); // BodySID
2645         avio_wb64(pb, mxf->body_partition_offset[i]);
2646     }
2647
2648     avio_wb32(pb, 0); // BodySID of footer partition
2649     avio_wb64(pb, mxf->footer_partition_offset);
2650
2651     avio_wb32(pb, avio_tell(pb) - pos + 4);
2652 }
2653
2654 static int mxf_write_footer(AVFormatContext *s)
2655 {
2656     MXFContext *mxf = s->priv_data;
2657     AVIOContext *pb = s->pb;
2658     int err = 0;
2659
2660     if (!mxf->header_written ||
2661         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
2662         /* reason could be invalid options/not supported codec/out of memory */
2663         err = AVERROR_UNKNOWN;
2664         goto end;
2665     }
2666
2667     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2668
2669     mxf_write_klv_fill(s);
2670     mxf->footer_partition_offset = avio_tell(pb);
2671     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
2672         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2673             goto end;
2674     } else {
2675         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2676             goto end;
2677         mxf_write_klv_fill(s);
2678         mxf_write_index_table_segment(s);
2679     }
2680
2681     mxf_write_klv_fill(s);
2682     mxf_write_random_index_pack(s);
2683
2684     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
2685         if (s->oformat == &ff_mxf_opatom_muxer) {
2686             /* rewrite body partition to update lengths */
2687             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
2688             if ((err = mxf_write_opatom_body_partition(s)) < 0)
2689                 goto end;
2690         }
2691
2692         avio_seek(pb, 0, SEEK_SET);
2693         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
2694             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2695                 goto end;
2696             mxf_write_klv_fill(s);
2697             mxf_write_index_table_segment(s);
2698         } else {
2699             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2700                 goto end;
2701         }
2702     }
2703
2704 end:
2705     ff_audio_interleave_close(s);
2706
2707     av_freep(&mxf->index_entries);
2708     av_freep(&mxf->body_partition_offset);
2709     av_freep(&mxf->timecode_track->priv_data);
2710     av_freep(&mxf->timecode_track);
2711
2712     mxf_free(s);
2713
2714     return err < 0 ? err : 0;
2715 }
2716
2717 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2718 {
2719     int i, stream_count = 0;
2720
2721     for (i = 0; i < s->nb_streams; i++)
2722         stream_count += !!s->streams[i]->last_in_packet_buffer;
2723
2724     if (stream_count && (s->nb_streams == stream_count || flush)) {
2725         AVPacketList *pktl = s->internal->packet_buffer;
2726         if (s->nb_streams != stream_count) {
2727             AVPacketList *last = NULL;
2728             // find last packet in edit unit
2729             while (pktl) {
2730                 if (!stream_count || pktl->pkt.stream_index == 0)
2731                     break;
2732                 last = pktl;
2733                 pktl = pktl->next;
2734                 stream_count--;
2735             }
2736             // purge packet queue
2737             while (pktl) {
2738                 AVPacketList *next = pktl->next;
2739
2740                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2741                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2742                 av_packet_unref(&pktl->pkt);
2743                 av_freep(&pktl);
2744                 pktl = next;
2745             }
2746             if (last)
2747                 last->next = NULL;
2748             else {
2749                 s->internal->packet_buffer = NULL;
2750                 s->internal->packet_buffer_end= NULL;
2751                 goto out;
2752             }
2753             pktl = s->internal->packet_buffer;
2754         }
2755
2756         *out = pktl->pkt;
2757         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2758         s->internal->packet_buffer = pktl->next;
2759         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2760             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2761         if(!s->internal->packet_buffer)
2762             s->internal->packet_buffer_end= NULL;
2763         av_freep(&pktl);
2764         return 1;
2765     } else {
2766     out:
2767         av_init_packet(out);
2768         return 0;
2769     }
2770 }
2771
2772 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2773 {
2774     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2775     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2776
2777     return next->dts > pkt->dts ||
2778         (next->dts == pkt->dts && sc->order < sc2->order);
2779 }
2780
2781 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2782 {
2783     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2784                                mxf_interleave_get_packet, mxf_compare_timestamps);
2785 }
2786
2787 #define MXF_COMMON_OPTIONS \
2788     { "signal_standard", "Force/set Sigal Standard",\
2789       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2790     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
2791       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2792     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
2793       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2794     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
2795       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2796     { "smpte274m", "SMPTE 274M (1125 line)",\
2797       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2798     { "smpte296m", "SMPTE 296M (750 line progressive)",\
2799       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2800     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
2801       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2802     { "smpte428", "SMPTE 428-1 DCDM",\
2803       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
2804
2805
2806
2807 static const AVOption mxf_options[] = {
2808     MXF_COMMON_OPTIONS
2809     { "store_user_comments", "",
2810       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
2811     { NULL },
2812 };
2813
2814 static const AVClass mxf_muxer_class = {
2815     .class_name     = "MXF muxer",
2816     .item_name      = av_default_item_name,
2817     .option         = mxf_options,
2818     .version        = LIBAVUTIL_VERSION_INT,
2819 };
2820
2821 static const AVOption d10_options[] = {
2822     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2823       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2824     MXF_COMMON_OPTIONS
2825     { "store_user_comments", "",
2826       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
2827     { NULL },
2828 };
2829
2830 static const AVClass mxf_d10_muxer_class = {
2831     .class_name     = "MXF-D10 muxer",
2832     .item_name      = av_default_item_name,
2833     .option         = d10_options,
2834     .version        = LIBAVUTIL_VERSION_INT,
2835 };
2836
2837 static const AVOption opatom_options[] = {
2838     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
2839         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2840     MXF_COMMON_OPTIONS
2841     { NULL },
2842 };
2843
2844 static const AVClass mxf_opatom_muxer_class = {
2845     .class_name     = "MXF-OPAtom muxer",
2846     .item_name      = av_default_item_name,
2847     .option         = opatom_options,
2848     .version        = LIBAVUTIL_VERSION_INT,
2849 };
2850
2851 AVOutputFormat ff_mxf_muxer = {
2852     .name              = "mxf",
2853     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2854     .mime_type         = "application/mxf",
2855     .extensions        = "mxf",
2856     .priv_data_size    = sizeof(MXFContext),
2857     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2858     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2859     .write_header      = mxf_write_header,
2860     .write_packet      = mxf_write_packet,
2861     .write_trailer     = mxf_write_footer,
2862     .flags             = AVFMT_NOTIMESTAMPS,
2863     .interleave_packet = mxf_interleave,
2864     .priv_class        = &mxf_muxer_class,
2865 };
2866
2867 AVOutputFormat ff_mxf_d10_muxer = {
2868     .name              = "mxf_d10",
2869     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2870     .mime_type         = "application/mxf",
2871     .priv_data_size    = sizeof(MXFContext),
2872     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2873     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2874     .write_header      = mxf_write_header,
2875     .write_packet      = mxf_write_packet,
2876     .write_trailer     = mxf_write_footer,
2877     .flags             = AVFMT_NOTIMESTAMPS,
2878     .interleave_packet = mxf_interleave,
2879     .priv_class        = &mxf_d10_muxer_class,
2880 };
2881
2882 AVOutputFormat ff_mxf_opatom_muxer = {
2883     .name              = "mxf_opatom",
2884     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
2885     .mime_type         = "application/mxf",
2886     .extensions        = "mxf",
2887     .priv_data_size    = sizeof(MXFContext),
2888     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2889     .video_codec       = AV_CODEC_ID_DNXHD,
2890     .write_header      = mxf_write_header,
2891     .write_packet      = mxf_write_packet,
2892     .write_trailer     = mxf_write_footer,
2893     .flags             = AVFMT_NOTIMESTAMPS,
2894     .interleave_packet = mxf_interleave,
2895     .priv_class        = &mxf_opatom_muxer_class,
2896 };