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/mastering_display_metadata.h"
  48 #include "libavutil/pixdesc.h"
  49 #include "libavutil/time_internal.h"
  50 #include "libavcodec/bytestream.h"
  51 #include "libavcodec/dnxhddata.h"
  52 #include "libavcodec/dv_profile.h"
  53 #include "libavcodec/h264_ps.h"
  54 #include "libavcodec/golomb.h"
  55 #include "libavcodec/internal.h"
  56 #include "avformat.h"
  57 #include "avio_internal.h"
  58 #include "internal.h"
  59 #include "avc.h"
  60 #include "mxf.h"
  61 #include "config.h"
  62
  63 extern AVOutputFormat ff_mxf_d10_muxer;
  64 extern AVOutputFormat ff_mxf_opatom_muxer;
  65
  66 #define EDIT_UNITS_PER_BODY 250
  67 #define KAG_SIZE 512
  68
  69 typedef struct MXFIndexEntry {
  70     uint64_t offset;
  71     unsigned slice_offset; ///< offset of audio slice
  72     uint16_t temporal_ref;
  73     uint8_t flags;
  74 } MXFIndexEntry;
  75
  76 typedef struct MXFStreamContext {
  77     int64_t pkt_cnt;         ///< pkt counter for muxed packets
  78     UID track_essence_element_key;
  79     int index;               ///< index in mxf_essence_container_uls table
  80     const UID *codec_ul;
  81     const UID *container_ul;
  82     int order;               ///< interleaving order if dts are equal
  83     int interlaced;          ///< whether picture is interlaced
  84     int field_dominance;     ///< tff=1, bff=2
  85     int component_depth;
  86     int color_siting;
  87     int signal_standard;
  88     int h_chroma_sub_sample;
  89     int v_chroma_sub_sample;
  90     int temporal_reordering;
  91     AVRational aspect_ratio; ///< display aspect ratio
  92     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  93     int video_bit_rate;
  94     int slice_offset;
  95     int frame_size;          ///< frame size in bytes
  96     int seq_closed_gop;      ///< all gops in sequence are closed, used in mpeg-2 descriptor
  97     int max_gop;             ///< maximum gop size, used by mpeg-2 descriptor
  98     int b_picture_count;     ///< maximum number of consecutive b pictures, used in mpeg-2 descriptor
  99     int low_delay;           ///< low delay, used in mpeg-2 descriptor
 100     int avc_intra;
 101 } MXFStreamContext;
 102
 103 typedef struct MXFContainerEssenceEntry {
 104     UID container_ul;
 105     UID element_ul;
 106     UID codec_ul;
 107     void (*write_desc)(AVFormatContext *, AVStream *);
 108 } MXFContainerEssenceEntry;
 109
 110 typedef struct MXFPackage {
 111     char *name;
 112     enum MXFMetadataSetType type;
 113     int instance;
 114     struct MXFPackage *ref;
 115 } MXFPackage;
 116
 117 enum ULIndex {
 118     INDEX_MPEG2 = 0,
 119     INDEX_AES3,
 120     INDEX_WAV,
 121     INDEX_D10_VIDEO,
 122     INDEX_D10_AUDIO,
 123     INDEX_DV,
 124     INDEX_DNXHD,
 125     INDEX_JPEG2000,
 126     INDEX_H264,
 127     INDEX_S436M,
 128     INDEX_PRORES,
 129 };
 130
 131 static const struct {
 132     enum AVCodecID id;
 133     enum ULIndex index;
 134 } mxf_essence_mappings[] = {
 135     { AV_CODEC_ID_MPEG2VIDEO, INDEX_MPEG2 },
 136     { AV_CODEC_ID_PCM_S24LE,  INDEX_AES3 },
 137     { AV_CODEC_ID_PCM_S16LE,  INDEX_AES3 },
 138     { AV_CODEC_ID_DVVIDEO,    INDEX_DV },
 139     { AV_CODEC_ID_DNXHD,      INDEX_DNXHD },
 140     { AV_CODEC_ID_JPEG2000,   INDEX_JPEG2000 },
 141     { AV_CODEC_ID_H264,       INDEX_H264 },
 142     { AV_CODEC_ID_PRORES,     INDEX_PRORES },
 143     { AV_CODEC_ID_NONE }
 144 };
 145
 146 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 147 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 148 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 149 static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st);
 150 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 151 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 152 static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st);
 153
 154 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 155     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 156       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 157       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 158       mxf_write_mpegvideo_desc },
 159     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 160       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 161       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 162       mxf_write_aes3_desc },
 163     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 164       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 165       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 166       mxf_write_wav_desc },
 167     // D-10 Video
 168     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 169       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 170       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 171       mxf_write_cdci_desc },
 172     // D-10 Audio
 173     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 174       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 175       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 176       mxf_write_generic_sound_desc },
 177     // DV
 178     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 179       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 180       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 181       mxf_write_cdci_desc },
 182     // DNxHD
 183     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 184       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 185       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 186       mxf_write_cdci_desc },
 187     // JPEG2000
 188     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 189       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 190       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 191       mxf_write_cdci_desc },
 192     // H.264
 193     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 194       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 195       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 196       mxf_write_h264_desc },
 197     // S436M ANC
 198     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 },
 199       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x17,0x01,0x02,0x00 },
 200       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x01,0x5C,0x00 },
 201       mxf_write_s436m_anc_desc },
 202     // ProRes
 203     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x1c,0x01,0x00 },
 204       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x17,0x00 },
 205       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 },
 206       mxf_write_cdci_desc },
 207     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 208       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 209       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 210       NULL },
 211 };
 212
 213 static const UID mxf_d10_codec_uls[] = {
 214     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, // D-10 625/50 PAL 50mb/s
 215     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 }, // D-10 525/50 NTSC 50mb/s
 216     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 }, // D-10 625/50 PAL 40mb/s
 217     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 }, // D-10 525/50 NTSC 40mb/s
 218     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 }, // D-10 625/50 PAL 30mb/s
 219     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 }, // D-10 525/50 NTSC 30mb/s
 220 };
 221
 222 static const UID mxf_d10_container_uls[] = {
 223     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, // D-10 625/50 PAL 50mb/s
 224     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 }, // D-10 525/50 NTSC 50mb/s
 225     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 }, // D-10 625/50 PAL 40mb/s
 226     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, // D-10 525/50 NTSC 40mb/s
 227     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, // D-10 625/50 PAL 30mb/s
 228     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 }, // D-10 525/50 NTSC 30mb/s
 229 };
 230
 231 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 232 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 233
 234 /**
 235  * complete key for operation pattern, partitions, and primer pack
 236  */
 237 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 238 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 239 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 240 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 241 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 242 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
 243 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
 244 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 245 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 246
 247 /**
 248  * partial key for header metadata
 249  */
 250 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 251 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 252
 253 /**
 254  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 255  *             https://smpte-ra.org/sites/default/files/Labels.xml
 256  */
 257 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 258     // preface set
 259     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 260     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 261     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 262     { 0x3B07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x04,0x00,0x00,0x00}}, /* Object Model Version */
 263     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 264     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 265     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 266     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 267     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 268     // Identification
 269     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 270     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 271     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 272     { 0x3C03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x04,0x00,0x00,0x00}}, /* Product Version */
 273     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 274     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 275     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 276     { 0x3C07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x0A,0x00,0x00,0x00}}, /* Toolkit Version */
 277     { 0x3C08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x06,0x01,0x00,0x00}}, /* Platform */
 278     // Content Storage
 279     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 280     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 281     // Essence Container Data
 282     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 283     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 284     // Package
 285     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 286     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 287     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 288     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 289     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 290     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 291     // Track
 292     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 293     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 294     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 295     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 296     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 297     // Sequence
 298     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 299     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 300     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 301     // Source Clip
 302     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 303     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 304     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 305     // Timecode Component
 306     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 307     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 308     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 309     // File Descriptor
 310     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 311     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 312     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 313     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 314     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 315     // Generic Picture Essence Descriptor
 316     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 317     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 318     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 319     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 320     { 0x3216, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x03,0x02,0x08,0x00,0x00,0x00}}, /* Stored F2 Offset */
 321     { 0x3205, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x08,0x00,0x00,0x00}}, /* Sampled Width */
 322     { 0x3204, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x07,0x00,0x00,0x00}}, /* Sampled Height */
 323     { 0x3206, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x09,0x00,0x00,0x00}}, /* Sampled X Offset */
 324     { 0x3207, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0A,0x00,0x00,0x00}}, /* Sampled Y Offset */
 325     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 326     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 327     { 0x320A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0D,0x00,0x00,0x00}}, /* Display X offset */
 328     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 329     { 0x3217, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x03,0x02,0x07,0x00,0x00,0x00}}, /* Display F2 offset */
 330     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 331     { 0x3210, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x02,0x01,0x01,0x01,0x02,0x00}}, /* Transfer characteristic */
 332     { 0x321A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x02,0x01,0x01,0x03,0x01,0x00}}, /* Coding Equations (color space) */
 333     { 0x3219, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x09,0x04,0x01,0x02,0x01,0x01,0x06,0x01,0x00}}, /* Color Primaries */
 334     { 0x3213, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x02,0x00,0x00,0x00,0x00}}, /* Image Start Offset */
 335     { 0x3214, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Image End Offset */
 336     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 337     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 338     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 339     // CDCI Picture Essence Descriptor
 340     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 341     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 342     { 0x3308, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x01,0x10,0x00,0x00,0x00}}, /* Vertical Subsampling */
 343     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 344     { 0x3307, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x04,0x00,0x00,0x00,0x00}}, /* Padding Bits */
 345     { 0x3304, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x03,0x03,0x00,0x00,0x00}}, /* Black Ref level */
 346     { 0x3305, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x03,0x04,0x00,0x00,0x00}}, /* White Ref level */
 347     { 0x3306, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x05,0x00,0x00,0x00}}, /* Color Range */
 348     // Generic Sound Essence Descriptor
 349     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 350     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 351     { 0x3D04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x02,0x01,0x01,0x03,0x00,0x00,0x00}}, /* Audio Ref Level */
 352     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 353     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 354     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 355     // Index Table Segment
 356     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 357     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 358     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 359     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 360     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 361     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 362     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 363     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 364     // MPEG video Descriptor
 365     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 366     { 0x8003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x05,0x00,0x00}}, /* LowDelay */
 367     { 0x8004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x06,0x00,0x00}}, /* ClosedGOP */
 368     { 0x8006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x08,0x00,0x00}}, /* MaxGOP */
 369     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 370     { 0x8008, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x09,0x00,0x00}}, /* BPictureCount */
 371     // Wave Audio Essence Descriptor
 372     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 373     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 374     // mxf_user_comments_local_tag
 375     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 376     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 377     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 378     // mxf_avc_subdescriptor_local_tags
 379     { 0x8100, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x04,0x06,0x10,0x00,0x00}}, /* SubDescriptors */
 380     { 0x8200, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0E,0x00,0x00}}, /* AVC Decoding Delay */
 381     { 0x8201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0A,0x00,0x00}}, /* AVC Profile */
 382     { 0x8202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0D,0x00,0x00}}, /* AVC Level */
 383     // ff_mxf_mastering_display_local_tags
 384     { 0x8301, FF_MXF_MasteringDisplayPrimaries },
 385     { 0x8302, FF_MXF_MasteringDisplayWhitePointChromaticity },
 386     { 0x8303, FF_MXF_MasteringDisplayMaximumLuminance },
 387     { 0x8304, FF_MXF_MasteringDisplayMinimumLuminance },
 388 };
 389
 390 #define MXF_NUM_TAGS FF_ARRAY_ELEMS(mxf_local_tag_batch)
 391
 392 typedef struct MXFContext {
 393     AVClass *av_class;
 394     int64_t footer_partition_offset;
 395     int essence_container_count;
 396     AVRational time_base;
 397     int header_written;
 398     MXFIndexEntry *index_entries;
 399     unsigned edit_units_count;
 400     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 401     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 402     int last_indexed_edit_unit;
 403     uint64_t *body_partition_offset;
 404     unsigned body_partitions_count;
 405     int last_key_index;  ///< index of last key frame
 406     uint64_t duration;
 407     AVTimecode tc;       ///< timecode context
 408     AVStream *timecode_track;
 409     int timecode_base;       ///< rounded time code base (25 or 30)
 410     int edit_unit_byte_count; ///< fixed edit unit byte count
 411     int content_package_rate; ///< content package rate in system element, see SMPTE 326M
 412     uint64_t body_offset;
 413     uint32_t instance_number;
 414     uint8_t umid[16];        ///< unique material identifier
 415     int channel_count;
 416     int signal_standard;
 417     uint32_t tagged_value_count;
 418     AVRational audio_edit_rate;
 419     int store_user_comments;
 420     int track_instance_count; // used to generate MXFTrack uuids
 421     int cbr_index;           ///< use a constant bitrate index
 422     uint8_t unused_tags[MXF_NUM_TAGS];  ///< local tags that we know will not be used
 423 } MXFContext;
 424
 425 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 426 {
 427     avio_write(pb, uuid_base, 12);
 428     avio_wb16(pb, type);
 429     avio_wb16(pb, value);
 430 }
 431
 432 static void mxf_write_umid(AVFormatContext *s, int type)
 433 {
 434     MXFContext *mxf = s->priv_data;
 435     avio_write(s->pb, umid_ul, 13);
 436     avio_wb24(s->pb, mxf->instance_number);
 437     avio_write(s->pb, mxf->umid, 15);
 438     avio_w8(s->pb, type);
 439 }
 440
 441 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 442 {
 443     avio_wb32(pb, ref_count);
 444     avio_wb32(pb, 16);
 445 }
 446
 447 static int klv_ber_length(uint64_t len)
 448 {
 449     if (len < 128)
 450         return 1;
 451     else
 452         return (av_log2(len) >> 3) + 2;
 453 }
 454
 455 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 456 {
 457     // Determine the best BER size
 458     int size = klv_ber_length(len);
 459     if (size == 1) {
 460         //short form
 461         avio_w8(pb, len);
 462         return 1;
 463     }
 464
 465     size --;
 466     // long form
 467     avio_w8(pb, 0x80 + size);
 468     while(size) {
 469         size--;
 470         avio_w8(pb, len >> 8 * size & 0xff);
 471     }
 472     return 0;
 473 }
 474
 475 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 476 {
 477     avio_w8(pb, 0x80 + 3);
 478     avio_wb24(pb, len);
 479 }
 480
 481 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 482 {
 483     avio_w8(pb, 0x80 + 8);
 484     avio_wb64(pb, len);
 485 }
 486
 487 /*
 488  * Get essence container ul index
 489  */
 490 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 491 {
 492     int i;
 493     for (i = 0; mxf_essence_mappings[i].id; i++)
 494         if (mxf_essence_mappings[i].id == id)
 495             return mxf_essence_mappings[i].index;
 496     return -1;
 497 }
 498
 499 static const MXFLocalTagPair* mxf_lookup_local_tag(int tag)
 500 {
 501     for (int i = 0; i < MXF_NUM_TAGS; i++) {
 502         if (mxf_local_tag_batch[i].local_tag == tag) {
 503             return &mxf_local_tag_batch[i];
 504         }
 505     }
 506
 507     // this assert can only be hit during development
 508     av_assert0(0 && "you forgot to add your new tag to mxf_local_tag_batch");
 509 }
 510
 511 static void mxf_mark_tag_unused(MXFContext *mxf, int tag)
 512 {
 513     const MXFLocalTagPair *pair = mxf_lookup_local_tag(tag);
 514     mxf->unused_tags[pair - mxf_local_tag_batch] = 1;
 515 }
 516
 517 static void mxf_write_primer_pack(AVFormatContext *s)
 518 {
 519     MXFContext *mxf = s->priv_data;
 520     AVIOContext *pb = s->pb;
 521     int local_tag_number = MXF_NUM_TAGS, i;
 522     int will_have_avc_tags = 0, will_have_mastering_tags = 0;
 523
 524     for (i = 0; i < s->nb_streams; i++) {
 525         MXFStreamContext *sc = s->streams[i]->priv_data;
 526         if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {
 527             will_have_avc_tags = 1;
 528         }
 529         if (av_stream_get_side_data(s->streams[i], AV_PKT_DATA_MASTERING_DISPLAY_METADATA, NULL)) {
 530             will_have_mastering_tags = 1;
 531         }
 532     }
 533
 534     if (!mxf->store_user_comments) {
 535         mxf_mark_tag_unused(mxf, 0x4406);
 536         mxf_mark_tag_unused(mxf, 0x5001);
 537         mxf_mark_tag_unused(mxf, 0x5003);
 538     }
 539
 540     if (!will_have_avc_tags) {
 541         mxf_mark_tag_unused(mxf, 0x8100);
 542         mxf_mark_tag_unused(mxf, 0x8200);
 543         mxf_mark_tag_unused(mxf, 0x8201);
 544         mxf_mark_tag_unused(mxf, 0x8202);
 545     }
 546
 547     if (!will_have_mastering_tags) {
 548         mxf_mark_tag_unused(mxf, 0x8301);
 549         mxf_mark_tag_unused(mxf, 0x8302);
 550         mxf_mark_tag_unused(mxf, 0x8303);
 551         mxf_mark_tag_unused(mxf, 0x8304);
 552     }
 553
 554     for (i = 0; i < MXF_NUM_TAGS; i++) {
 555         if (mxf->unused_tags[i]) {
 556             local_tag_number--;
 557         }
 558     }
 559
 560     avio_write(pb, primer_pack_key, 16);
 561     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 562
 563     avio_wb32(pb, local_tag_number); // local_tag num
 564     avio_wb32(pb, 18); // item size, always 18 according to the specs
 565
 566     for (i = 0; i < MXF_NUM_TAGS; i++) {
 567         if (mxf->unused_tags[i] == 0) {
 568             avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 569             avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 570         }
 571     }
 572 }
 573
 574 static void mxf_write_local_tag(AVFormatContext *s, int size, int tag)
 575 {
 576     MXFContext *mxf = s->priv_data;
 577     AVIOContext *pb = s->pb;
 578     const MXFLocalTagPair *pair = mxf_lookup_local_tag(tag);
 579
 580     // make sure the tag was not declared unnecessary upfront
 581     av_assert0(mxf->unused_tags[pair - mxf_local_tag_batch] == 0);
 582
 583     avio_wb16(pb, tag);
 584     avio_wb16(pb, size);
 585 }
 586
 587 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 588 {
 589     avio_write(pb, header_metadata_key, 13);
 590     avio_wb24(pb, value);
 591 }
 592
 593 static const MXFCodecUL *mxf_get_codec_ul_by_id(const MXFCodecUL *uls, int id)
 594 {
 595     while (uls->uid[0]) {
 596         if (id == uls->id)
 597             break;
 598         uls++;
 599     }
 600     return uls;
 601 }
 602
 603 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 604 #define DESCRIPTOR_COUNT(essence_container_count) \
 605     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 606
 607 static void mxf_write_essence_container_refs(AVFormatContext *s)
 608 {
 609     MXFContext *c = s->priv_data;
 610     AVIOContext *pb = s->pb;
 611     int i;
 612
 613     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 614     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 615     for (i = 0; i < s->nb_streams; i++) {
 616         MXFStreamContext *sc = s->streams[i]->priv_data;
 617         // check first track of essence container type and only write it once
 618         if (sc->track_essence_element_key[15] != 0)
 619             continue;
 620         avio_write(pb, *sc->container_ul, 16);
 621         if (c->essence_container_count == 1)
 622             break;
 623     }
 624
 625     if (c->essence_container_count > 1)
 626         avio_write(pb, multiple_desc_ul, 16);
 627 }
 628
 629 static void mxf_write_preface(AVFormatContext *s)
 630 {
 631     MXFContext *mxf = s->priv_data;
 632     AVIOContext *pb = s->pb;
 633
 634     mxf_write_metadata_key(pb, 0x012f00);
 635     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 636     klv_encode_ber_length(pb, 138 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 637
 638     // write preface set uid
 639     mxf_write_local_tag(s, 16, 0x3C0A);
 640     mxf_write_uuid(pb, Preface, 0);
 641     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 642
 643     // last modified date
 644     mxf_write_local_tag(s, 8, 0x3B02);
 645     avio_wb64(pb, mxf->timestamp);
 646
 647     // write version
 648     mxf_write_local_tag(s, 2, 0x3B05);
 649     avio_wb16(pb, 259); // v1.3
 650
 651     // Object Model Version
 652     mxf_write_local_tag(s, 4, 0x3B07);
 653     avio_wb32(pb, 1);
 654
 655     // write identification_refs
 656     mxf_write_local_tag(s, 16 + 8, 0x3B06);
 657     mxf_write_refs_count(pb, 1);
 658     mxf_write_uuid(pb, Identification, 0);
 659
 660     // write content_storage_refs
 661     mxf_write_local_tag(s, 16, 0x3B03);
 662     mxf_write_uuid(pb, ContentStorage, 0);
 663
 664     // operational pattern
 665     mxf_write_local_tag(s, 16, 0x3B09);
 666     if (s->oformat == &ff_mxf_opatom_muxer)
 667         avio_write(pb, opatom_ul, 16);
 668     else
 669         avio_write(pb, op1a_ul, 16);
 670
 671     // write essence_container_refs
 672     mxf_write_local_tag(s, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 673     mxf_write_essence_container_refs(s);
 674
 675     // write dm_scheme_refs
 676     mxf_write_local_tag(s, 8, 0x3B0B);
 677     avio_wb64(pb, 0);
 678 }
 679
 680 /*
 681  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 682  * from decoding the utf-8 string.
 683  */
 684 static uint64_t mxf_utf16len(const char *utf8_str)
 685 {
 686     const uint8_t *q = utf8_str;
 687     uint64_t size = 0;
 688     while (*q) {
 689         uint32_t ch;
 690         GET_UTF8(ch, *q++, goto invalid;)
 691         if (ch < 0x10000)
 692             size++;
 693         else
 694             size += 2;
 695         continue;
 696 invalid:
 697         av_log(NULL, AV_LOG_ERROR, "Invalid UTF8 sequence in mxf_utf16len\n\n");
 698     }
 699     size += 1;
 700     return size;
 701 }
 702
 703 /*
 704  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 705  */
 706 static int mxf_utf16_local_tag_length(const char *utf8_str)
 707 {
 708     uint64_t size;
 709
 710     if (!utf8_str)
 711         return 0;
 712
 713     size = mxf_utf16len(utf8_str);
 714     if (size >= UINT16_MAX/2) {
 715         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 716         return 0;
 717     }
 718
 719     return 4 + size * 2;
 720 }
 721
 722 /*
 723  * Write a local tag containing an utf-8 string as utf-16
 724  */
 725 static void mxf_write_local_tag_utf16(AVFormatContext *s, int tag, const char *value)
 726 {
 727     AVIOContext *pb = s->pb;
 728     uint64_t size = mxf_utf16len(value);
 729
 730     if (size >= UINT16_MAX/2) {
 731         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 732         return;
 733     }
 734
 735     mxf_write_local_tag(s, size*2, tag);
 736     avio_put_str16be(pb, value);
 737 }
 738
 739 static void store_version(AVFormatContext *s){
 740     AVIOContext *pb = s->pb;
 741
 742     if (s->flags & AVFMT_FLAG_BITEXACT) {
 743         avio_wb16(pb, 0); // major
 744         avio_wb16(pb, 0); // minor
 745         avio_wb16(pb, 0); // tertiary
 746     } else {
 747         avio_wb16(pb, LIBAVFORMAT_VERSION_MAJOR); // major
 748         avio_wb16(pb, LIBAVFORMAT_VERSION_MINOR); // minor
 749         avio_wb16(pb, LIBAVFORMAT_VERSION_MICRO); // tertiary
 750     }
 751     avio_wb16(pb, 0); // patch
 752     avio_wb16(pb, 0); // release
 753 }
 754
 755 #define PLATFORM_IDENT "Lavf " AV_STRINGIFY((OS_NAME))
 756 static void mxf_write_identification(AVFormatContext *s)
 757 {
 758     MXFContext *mxf = s->priv_data;
 759     AVIOContext *pb = s->pb;
 760     AVDictionaryEntry *com_entry = av_dict_get(s->metadata, "company_name", NULL, 0);
 761     AVDictionaryEntry *product_entry = av_dict_get(s->metadata, "product_name", NULL, 0);
 762     AVDictionaryEntry *version_entry = av_dict_get(s->metadata, "product_version", NULL, 0);
 763     const char *company = com_entry ? com_entry->value : "FFmpeg";
 764     const char *product = product_entry ? product_entry->value : s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 765     const char *platform = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : PLATFORM_IDENT;
 766     const char *version = version_entry ? version_entry->value :
 767                               s->flags & AVFMT_FLAG_BITEXACT ? "0.0.0" :
 768                                   AV_STRINGIFY(LIBAVFORMAT_VERSION);
 769     int length;
 770
 771     mxf_write_metadata_key(pb, 0x013000);
 772     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 773
 774     length = 100 +mxf_utf16_local_tag_length(company) +
 775                   mxf_utf16_local_tag_length(product) +
 776                   mxf_utf16_local_tag_length(platform) +
 777                   mxf_utf16_local_tag_length(version);
 778     klv_encode_ber_length(pb, length);
 779
 780     // write uid
 781     mxf_write_local_tag(s, 16, 0x3C0A);
 782     mxf_write_uuid(pb, Identification, 0);
 783     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 784
 785     // write generation uid
 786     mxf_write_local_tag(s, 16, 0x3C09);
 787     mxf_write_uuid(pb, Identification, 1);
 788     mxf_write_local_tag_utf16(s, 0x3C01, company); // Company Name
 789     mxf_write_local_tag_utf16(s, 0x3C02, product); // Product Name
 790
 791     mxf_write_local_tag(s, 10, 0x3C03); // Product Version
 792     store_version(s);
 793
 794     mxf_write_local_tag_utf16(s, 0x3C04, version); // Version String
 795     mxf_write_local_tag_utf16(s, 0x3C08, platform); // Platform
 796
 797     // write product uid
 798     mxf_write_local_tag(s, 16, 0x3C05);
 799     mxf_write_uuid(pb, Identification, 2);
 800
 801     // modification date
 802     mxf_write_local_tag(s, 8, 0x3C06);
 803     avio_wb64(pb, mxf->timestamp);
 804
 805     mxf_write_local_tag(s, 10, 0x3C07); // Toolkit Version
 806     store_version(s);
 807 }
 808
 809 static void mxf_write_content_storage(AVFormatContext *s, MXFPackage *packages, int package_count)
 810 {
 811     AVIOContext *pb = s->pb;
 812     int i;
 813
 814     mxf_write_metadata_key(pb, 0x011800);
 815     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 816     klv_encode_ber_length(pb, 60 + (16 * package_count));
 817
 818     // write uid
 819     mxf_write_local_tag(s, 16, 0x3C0A);
 820     mxf_write_uuid(pb, ContentStorage, 0);
 821     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 822
 823     // write package reference
 824     mxf_write_local_tag(s, 16 * package_count + 8, 0x1901);
 825     mxf_write_refs_count(pb, package_count);
 826     for (i = 0; i < package_count; i++) {
 827         mxf_write_uuid(pb, packages[i].type, packages[i].instance);
 828     }
 829
 830     // write essence container data
 831     mxf_write_local_tag(s, 8 + 16, 0x1902);
 832     mxf_write_refs_count(pb, 1);
 833     mxf_write_uuid(pb, EssenceContainerData, 0);
 834 }
 835
 836 static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *package)
 837 {
 838     MXFContext *mxf = s->priv_data;
 839     AVIOContext *pb = s->pb;
 840     MXFStreamContext *sc = st->priv_data;
 841
 842     mxf_write_metadata_key(pb, 0x013b00);
 843     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 844     klv_encode_ber_length(pb, 80);
 845
 846     // write track uid
 847     mxf_write_local_tag(s, 16, 0x3C0A);
 848     mxf_write_uuid(pb, Track, mxf->track_instance_count);
 849     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 850
 851     // write track id
 852     mxf_write_local_tag(s, 4, 0x4801);
 853     avio_wb32(pb, st->index+2);
 854
 855     // write track number
 856     mxf_write_local_tag(s, 4, 0x4804);
 857     if (package->type == MaterialPackage)
 858         avio_wb32(pb, 0); // track number of material package is 0
 859     else
 860         avio_write(pb, sc->track_essence_element_key + 12, 4);
 861
 862     // write edit rate
 863     mxf_write_local_tag(s, 8, 0x4B01);
 864
 865     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer) {
 866         avio_wb32(pb, mxf->tc.rate.num);
 867         avio_wb32(pb, mxf->tc.rate.den);
 868     } else {
 869         avio_wb32(pb, mxf->time_base.den);
 870         avio_wb32(pb, mxf->time_base.num);
 871     }
 872
 873     // write origin
 874     mxf_write_local_tag(s, 8, 0x4B02);
 875     avio_wb64(pb, 0);
 876
 877     // write sequence refs
 878     mxf_write_local_tag(s, 16, 0x4803);
 879     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 880 }
 881
 882 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 };
 883
 884 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 885 {
 886     MXFContext *mxf = s->priv_data;
 887     AVIOContext *pb = s->pb;
 888
 889     // find data define uls
 890     mxf_write_local_tag(s, 16, 0x0201);
 891     if (st == mxf->timecode_track)
 892         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 893     else {
 894         const MXFCodecUL *data_def_ul = mxf_get_codec_ul_by_id(ff_mxf_data_definition_uls, st->codecpar->codec_type);
 895         avio_write(pb, data_def_ul->uid, 16);
 896     }
 897
 898     // write duration
 899     mxf_write_local_tag(s, 8, 0x0202);
 900
 901     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
 902         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 903     } else {
 904         avio_wb64(pb, mxf->duration);
 905     }
 906 }
 907
 908 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, MXFPackage *package)
 909 {
 910     MXFContext *mxf = s->priv_data;
 911     AVIOContext *pb = s->pb;
 912     enum MXFMetadataSetType component;
 913
 914     mxf_write_metadata_key(pb, 0x010f00);
 915     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 916     klv_encode_ber_length(pb, 80);
 917
 918     mxf_write_local_tag(s, 16, 0x3C0A);
 919     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 920
 921     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 922     mxf_write_common_fields(s, st);
 923
 924     // write structural component
 925     mxf_write_local_tag(s, 16 + 8, 0x1001);
 926     mxf_write_refs_count(pb, 1);
 927     if (st == mxf->timecode_track)
 928         component = TimecodeComponent;
 929     else
 930         component = SourceClip;
 931
 932     mxf_write_uuid(pb, component, mxf->track_instance_count);
 933 }
 934
 935 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
 936 {
 937     MXFContext *mxf = s->priv_data;
 938     AVIOContext *pb = s->pb;
 939
 940     mxf_write_metadata_key(pb, 0x011400);
 941     klv_encode_ber_length(pb, 75);
 942
 943     // UID
 944     mxf_write_local_tag(s, 16, 0x3C0A);
 945     mxf_write_uuid(pb, TimecodeComponent, mxf->track_instance_count);
 946
 947     mxf_write_common_fields(s, st);
 948
 949     // Start Time Code
 950     mxf_write_local_tag(s, 8, 0x1501);
 951     avio_wb64(pb, mxf->tc.start);
 952
 953     // Rounded Time Code Base
 954     mxf_write_local_tag(s, 2, 0x1502);
 955     avio_wb16(pb, mxf->timecode_base);
 956
 957     // Drop Frame
 958     mxf_write_local_tag(s, 1, 0x1503);
 959     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 960 }
 961
 962 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
 963 {
 964     MXFContext *mxf = s->priv_data;
 965     AVIOContext *pb = s->pb;
 966     int i;
 967
 968     mxf_write_metadata_key(pb, 0x011100);
 969     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 970     klv_encode_ber_length(pb, 108);
 971
 972     // write uid
 973     mxf_write_local_tag(s, 16, 0x3C0A);
 974     mxf_write_uuid(pb, SourceClip, mxf->track_instance_count);
 975
 976     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 977     mxf_write_common_fields(s, st);
 978
 979     // write start_position
 980     mxf_write_local_tag(s, 8, 0x1201);
 981     avio_wb64(pb, 0);
 982
 983     // write source package uid, end of the reference
 984     mxf_write_local_tag(s, 32, 0x1101);
 985     if (!package->ref) {
 986         for (i = 0; i < 4; i++)
 987             avio_wb64(pb, 0);
 988     } else
 989         mxf_write_umid(s, package->ref->instance);
 990
 991     // write source track id
 992     mxf_write_local_tag(s, 4, 0x1102);
 993     if (package->type == SourcePackage && !package->ref)
 994         avio_wb32(pb, 0);
 995     else
 996         avio_wb32(pb, st->index+2);
 997 }
 998
 999 static void mxf_write_tape_descriptor(AVFormatContext *s)
1000 {
1001     AVIOContext *pb = s->pb;
1002
1003     mxf_write_metadata_key(pb, 0x012e00);
1004     PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);
1005     klv_encode_ber_length(pb, 20);
1006     mxf_write_local_tag(s, 16, 0x3C0A);
1007     mxf_write_uuid(pb, TapeDescriptor, 0);
1008     PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);
1009 }
1010
1011
1012 static void mxf_write_multi_descriptor(AVFormatContext *s)
1013 {
1014     MXFContext *mxf = s->priv_data;
1015     AVIOContext *pb = s->pb;
1016     const uint8_t *ul;
1017     int i;
1018
1019     mxf_write_metadata_key(pb, 0x014400);
1020     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
1021     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
1022
1023     mxf_write_local_tag(s, 16, 0x3C0A);
1024     mxf_write_uuid(pb, MultipleDescriptor, 0);
1025     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
1026
1027     // write sample rate
1028     mxf_write_local_tag(s, 8, 0x3001);
1029     avio_wb32(pb, mxf->time_base.den);
1030     avio_wb32(pb, mxf->time_base.num);
1031
1032     // write essence container ul
1033     mxf_write_local_tag(s, 16, 0x3004);
1034     if (mxf->essence_container_count > 1)
1035         ul = multiple_desc_ul;
1036     else {
1037         MXFStreamContext *sc = s->streams[0]->priv_data;
1038         ul = *sc->container_ul;
1039     }
1040     avio_write(pb, ul, 16);
1041
1042     // write sub descriptor refs
1043     mxf_write_local_tag(s, s->nb_streams * 16 + 8, 0x3F01);
1044     mxf_write_refs_count(pb, s->nb_streams);
1045     for (i = 0; i < s->nb_streams; i++)
1046         mxf_write_uuid(pb, SubDescriptor, i);
1047 }
1048
1049 static int64_t mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key)
1050 {
1051     MXFContext *mxf = s->priv_data;
1052     MXFStreamContext *sc = st->priv_data;
1053     AVIOContext *pb = s->pb;
1054     int64_t pos;
1055
1056     avio_write(pb, key, 16);
1057     klv_encode_ber4_length(pb, 0);
1058     pos = avio_tell(pb);
1059
1060     mxf_write_local_tag(s, 16, 0x3C0A);
1061     mxf_write_uuid(pb, SubDescriptor, st->index);
1062
1063     mxf_write_local_tag(s, 4, 0x3006);
1064     avio_wb32(pb, st->index+2);
1065
1066     mxf_write_local_tag(s, 8, 0x3001);
1067     if (s->oformat == &ff_mxf_d10_muxer) {
1068         avio_wb32(pb, mxf->time_base.den);
1069         avio_wb32(pb, mxf->time_base.num);
1070     } else {
1071         if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE ||
1072             st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
1073             avio_wb32(pb, st->codecpar->sample_rate);
1074             avio_wb32(pb, 1);
1075         } else {
1076             avio_wb32(pb, mxf->time_base.den);
1077             avio_wb32(pb, mxf->time_base.num);
1078         }
1079     }
1080
1081     mxf_write_local_tag(s, 16, 0x3004);
1082     avio_write(pb, *sc->container_ul, 16);
1083
1084     return pos;
1085 }
1086
1087 static const UID mxf_s436m_anc_descriptor_key = { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 };
1088 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
1089 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
1090 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
1091 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
1092 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
1093
1094 static const UID mxf_avc_subdescriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6E,0x00 };
1095
1096 static inline uint16_t rescale_mastering_chroma(AVRational q)
1097 {
1098     return av_clip_uint16(av_rescale(q.num, FF_MXF_MASTERING_CHROMA_DEN, q.den));
1099 }
1100
1101 static inline uint32_t rescale_mastering_luma(AVRational q)
1102 {
1103     return av_rescale(q.num, FF_MXF_MASTERING_LUMA_DEN, q.den);
1104 }
1105
1106 static int64_t mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key)
1107 {
1108     MXFStreamContext *sc = st->priv_data;
1109     AVIOContext *pb = s->pb;
1110     int stored_width = 0;
1111     int stored_height = (st->codecpar->height+15)/16*16;
1112     int display_height;
1113     int f1, f2;
1114     const MXFCodecUL *color_primaries_ul;
1115     const MXFCodecUL *color_trc_ul;
1116     const MXFCodecUL *color_space_ul;
1117     int64_t pos = mxf_write_generic_desc(s, st, key);
1118     uint8_t *side_data;
1119
1120     color_primaries_ul = mxf_get_codec_ul_by_id(ff_mxf_color_primaries_uls, st->codecpar->color_primaries);
1121     color_trc_ul       = mxf_get_codec_ul_by_id(ff_mxf_color_trc_uls, st->codecpar->color_trc);
1122     color_space_ul     = mxf_get_codec_ul_by_id(ff_mxf_color_space_uls, st->codecpar->color_space);
1123
1124     if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
1125         if (st->codecpar->height == 1080)
1126             stored_width = 1920;
1127         else if (st->codecpar->height == 720)
1128             stored_width = 1280;
1129     }
1130     if (!stored_width)
1131         stored_width = (st->codecpar->width+15)/16*16;
1132
1133     mxf_write_local_tag(s, 4, 0x3203);
1134     avio_wb32(pb, stored_width);
1135
1136     mxf_write_local_tag(s, 4, 0x3202);
1137     avio_wb32(pb, stored_height>>sc->interlaced);
1138
1139     if (s->oformat == &ff_mxf_d10_muxer) {
1140         //Stored F2 Offset
1141         mxf_write_local_tag(s, 4, 0x3216);
1142         avio_wb32(pb, 0);
1143
1144         //Image Start Offset
1145         mxf_write_local_tag(s, 4, 0x3213);
1146         avio_wb32(pb, 0);
1147
1148         //Image End Offset
1149         mxf_write_local_tag(s, 4, 0x3214);
1150         avio_wb32(pb, 0);
1151     }
1152
1153     //Sampled width
1154     mxf_write_local_tag(s, 4, 0x3205);
1155     avio_wb32(pb, stored_width);
1156
1157     //Samples height
1158     mxf_write_local_tag(s, 4, 0x3204);
1159     avio_wb32(pb, st->codecpar->height>>sc->interlaced);
1160
1161     //Sampled X Offset
1162     mxf_write_local_tag(s, 4, 0x3206);
1163     avio_wb32(pb, 0);
1164
1165     //Sampled Y Offset
1166     mxf_write_local_tag(s, 4, 0x3207);
1167     avio_wb32(pb, 0);
1168
1169     mxf_write_local_tag(s, 4, 0x3209);
1170     avio_wb32(pb, stored_width);
1171
1172     if (st->codecpar->height == 608) // PAL + VBI
1173         display_height = 576;
1174     else if (st->codecpar->height == 512)  // NTSC + VBI
1175         display_height = 486;
1176     else
1177         display_height = st->codecpar->height;
1178
1179     mxf_write_local_tag(s, 4, 0x3208);
1180     avio_wb32(pb, display_height>>sc->interlaced);
1181
1182     // display X offset
1183     mxf_write_local_tag(s, 4, 0x320A);
1184     avio_wb32(pb, 0);
1185
1186     // display Y offset
1187     mxf_write_local_tag(s, 4, 0x320B);
1188     avio_wb32(pb, (st->codecpar->height - display_height)>>sc->interlaced);
1189
1190     if (sc->interlaced) {
1191         //Display F2 Offset
1192         mxf_write_local_tag(s, 4, 0x3217);
1193         avio_wb32(pb, -((st->codecpar->height - display_height)&1));
1194     }
1195
1196     // component depth
1197     mxf_write_local_tag(s, 4, 0x3301);
1198     avio_wb32(pb, sc->component_depth);
1199
1200     // horizontal subsampling
1201     mxf_write_local_tag(s, 4, 0x3302);
1202     avio_wb32(pb, sc->h_chroma_sub_sample);
1203
1204     // vertical subsampling
1205     mxf_write_local_tag(s, 4, 0x3308);
1206     avio_wb32(pb, sc->v_chroma_sub_sample);
1207
1208     // color siting
1209     mxf_write_local_tag(s, 1, 0x3303);
1210     avio_w8(pb, sc->color_siting);
1211
1212     // Padding Bits
1213     mxf_write_local_tag(s, 2, 0x3307);
1214     avio_wb16(pb, 0);
1215
1216     if (st->codecpar->color_range != AVCOL_RANGE_UNSPECIFIED) {
1217         int black = 0,
1218             white = (1<<sc->component_depth) - 1,
1219             color = (1<<sc->component_depth);
1220         if (st->codecpar->color_range == AVCOL_RANGE_MPEG) {
1221             black = 1   << (sc->component_depth - 4);
1222             white = 235 << (sc->component_depth - 8);
1223             color = (14 << (sc->component_depth - 4)) + 1;
1224         }
1225         mxf_write_local_tag(s, 4, 0x3304);
1226         avio_wb32(pb, black);
1227         mxf_write_local_tag(s, 4, 0x3305);
1228         avio_wb32(pb, white);
1229         mxf_write_local_tag(s, 4, 0x3306);
1230         avio_wb32(pb, color);
1231     }
1232
1233     if (sc->signal_standard) {
1234         mxf_write_local_tag(s, 1, 0x3215);
1235         avio_w8(pb, sc->signal_standard);
1236     }
1237
1238     // frame layout
1239     mxf_write_local_tag(s, 1, 0x320C);
1240     avio_w8(pb, sc->interlaced);
1241
1242     // video line map
1243     switch (st->codecpar->height) {
1244     case  576: f1 = 23; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1245     case  608: f1 =  7; f2 = 320; break;
1246     case  480: f1 = 20; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1247     case  512: f1 =  7; f2 = 270; break;
1248     case  720: f1 = 26; f2 =   0; break; // progressive
1249     case 1080: f1 = 21; f2 = 584; break;
1250     default:   f1 =  0; f2 =   0; break;
1251     }
1252
1253     if (!sc->interlaced && f2) {
1254         f2  = 0;
1255         f1 *= 2;
1256     }
1257
1258
1259     mxf_write_local_tag(s, 16, 0x320D);
1260     avio_wb32(pb, 2);
1261     avio_wb32(pb, 4);
1262     avio_wb32(pb, f1);
1263     avio_wb32(pb, f2);
1264
1265     mxf_write_local_tag(s, 8, 0x320E);
1266     avio_wb32(pb, sc->aspect_ratio.num);
1267     avio_wb32(pb, sc->aspect_ratio.den);
1268
1269     if (color_primaries_ul->uid[0]) {
1270         mxf_write_local_tag(s, 16, 0x3219);
1271         avio_write(pb, color_primaries_ul->uid, 16);
1272     };
1273
1274     if (color_trc_ul->uid[0]) {
1275         mxf_write_local_tag(s, 16, 0x3210);
1276         avio_write(pb, color_trc_ul->uid, 16);
1277     };
1278
1279     if (color_space_ul->uid[0]) {
1280         mxf_write_local_tag(s, 16, 0x321A);
1281         avio_write(pb, color_space_ul->uid, 16);
1282     };
1283
1284     mxf_write_local_tag(s, 16, 0x3201);
1285     avio_write(pb, *sc->codec_ul, 16);
1286
1287     // Mastering Display metadata
1288     side_data = av_stream_get_side_data(st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, NULL);
1289     if (side_data) {
1290         const AVMasteringDisplayMetadata *metadata = (const AVMasteringDisplayMetadata*)side_data;
1291         if (metadata->has_primaries) {
1292             mxf_write_local_tag(s, 12, 0x8301);
1293             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[0][0]));
1294             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[0][1]));
1295             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[1][0]));
1296             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[1][1]));
1297             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[2][0]));
1298             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[2][1]));
1299             mxf_write_local_tag(s, 4, 0x8302);
1300             avio_wb16(pb, rescale_mastering_chroma(metadata->white_point[0]));
1301             avio_wb16(pb, rescale_mastering_chroma(metadata->white_point[1]));
1302         } else {
1303             av_log(NULL, AV_LOG_VERBOSE, "Not writing mastering display primaries. Missing data.\n");
1304         }
1305         if (metadata->has_luminance) {
1306             mxf_write_local_tag(s, 4, 0x8303);
1307             avio_wb32(pb, rescale_mastering_luma(metadata->max_luminance));
1308             mxf_write_local_tag(s, 4, 0x8304);
1309             avio_wb32(pb, rescale_mastering_luma(metadata->min_luminance));
1310         } else {
1311             av_log(NULL, AV_LOG_VERBOSE, "Not writing mastering display luminances. Missing data.\n");
1312         }
1313     }
1314
1315     if (sc->interlaced && sc->field_dominance) {
1316         mxf_write_local_tag(s, 1, 0x3212);
1317         avio_w8(pb, sc->field_dominance);
1318     }
1319
1320     if (st->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {
1321         // write avc sub descriptor ref
1322         mxf_write_local_tag(s, 8 + 16, 0x8100);
1323         mxf_write_refs_count(pb, 1);
1324         mxf_write_uuid(pb, AVCSubDescriptor, 0);
1325     }
1326
1327     return pos;
1328 }
1329
1330 static void mxf_update_klv_size(AVIOContext *pb, int64_t pos)
1331 {
1332     int64_t cur_pos = avio_tell(pb);
1333     int size = cur_pos - pos;
1334     avio_seek(pb, pos - 4, SEEK_SET);
1335     klv_encode_ber4_length(pb, size);
1336     avio_seek(pb, cur_pos, SEEK_SET);
1337 }
1338
1339 static void mxf_write_avc_subdesc(AVFormatContext *s, AVStream *st)
1340 {
1341     AVIOContext *pb = s->pb;
1342     int64_t pos;
1343
1344     avio_write(pb, mxf_avc_subdescriptor_key, 16);
1345     klv_encode_ber4_length(pb, 0);
1346     pos = avio_tell(pb);
1347
1348     mxf_write_local_tag(s, 16, 0x3C0A);
1349     mxf_write_uuid(pb, AVCSubDescriptor, 0);
1350
1351     mxf_write_local_tag(s, 1, 0x8200);
1352     avio_w8(pb, 0xFF); // AVC Decoding Delay, unknown
1353
1354     mxf_write_local_tag(s, 1, 0x8201);
1355     avio_w8(pb, st->codecpar->profile); // AVC Profile
1356
1357     mxf_write_local_tag(s, 1, 0x8202);
1358     avio_w8(pb, st->codecpar->level); // AVC Level
1359
1360     mxf_update_klv_size(s->pb, pos);
1361 }
1362
1363 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1364 {
1365     int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);
1366     mxf_update_klv_size(s->pb, pos);
1367
1368     if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1369         mxf_write_avc_subdesc(s, st);
1370     }
1371 }
1372
1373 static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st)
1374 {
1375     MXFStreamContext *sc = st->priv_data;
1376     if (sc->avc_intra) {
1377         mxf_write_mpegvideo_desc(s, st);
1378     } else {
1379         int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);
1380         mxf_update_klv_size(s->pb, pos);
1381         mxf_write_avc_subdesc(s, st);
1382     }
1383 }
1384
1385 static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st)
1386 {
1387     int64_t pos = mxf_write_generic_desc(s, st, mxf_s436m_anc_descriptor_key);
1388     mxf_update_klv_size(s->pb, pos);
1389 }
1390
1391 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1392 {
1393     AVIOContext *pb = s->pb;
1394     MXFStreamContext *sc = st->priv_data;
1395     int profile_and_level = (st->codecpar->profile<<4) | st->codecpar->level;
1396     int64_t pos = mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key);
1397
1398     if (st->codecpar->codec_id != AV_CODEC_ID_H264) {
1399         // bit rate
1400         mxf_write_local_tag(s, 4, 0x8000);
1401         avio_wb32(pb, sc->video_bit_rate);
1402
1403         // profile and level
1404         mxf_write_local_tag(s, 1, 0x8007);
1405         if (!st->codecpar->profile)
1406             profile_and_level |= 0x80; // escape bit
1407         avio_w8(pb, profile_and_level);
1408
1409         // low delay
1410         mxf_write_local_tag(s, 1, 0x8003);
1411         avio_w8(pb, sc->low_delay);
1412
1413         // closed gop
1414         mxf_write_local_tag(s, 1, 0x8004);
1415         avio_w8(pb, sc->seq_closed_gop);
1416
1417         // max gop
1418         mxf_write_local_tag(s, 2, 0x8006);
1419         avio_wb16(pb, sc->max_gop);
1420
1421         // b picture count
1422         mxf_write_local_tag(s, 2, 0x8008);
1423         avio_wb16(pb, sc->b_picture_count);
1424     }
1425
1426     mxf_update_klv_size(pb, pos);
1427 }
1428
1429 static int64_t mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key)
1430 {
1431     AVIOContext *pb = s->pb;
1432     MXFContext *mxf = s->priv_data;
1433     int show_warnings = !mxf->footer_partition_offset;
1434     int64_t pos = mxf_write_generic_desc(s, st, key);
1435
1436     if (s->oformat == &ff_mxf_opatom_muxer) {
1437         mxf_write_local_tag(s, 8, 0x3002);
1438         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1439     }
1440
1441     // audio locked
1442     mxf_write_local_tag(s, 1, 0x3D02);
1443     avio_w8(pb, 1);
1444
1445     // write audio sampling rate
1446     mxf_write_local_tag(s, 8, 0x3D03);
1447     avio_wb32(pb, st->codecpar->sample_rate);
1448     avio_wb32(pb, 1);
1449
1450     if (s->oformat == &ff_mxf_d10_muxer) {
1451         mxf_write_local_tag(s, 1, 0x3D04);
1452         avio_w8(pb, 0);
1453     }
1454
1455     mxf_write_local_tag(s, 4, 0x3D07);
1456     if (mxf->channel_count == -1) {
1457         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codecpar->channels != 4) && (st->codecpar->channels != 8))
1458             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");
1459         avio_wb32(pb, st->codecpar->channels);
1460     } else if (s->oformat == &ff_mxf_d10_muxer) {
1461         if (show_warnings && (mxf->channel_count < st->codecpar->channels))
1462             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1463         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1464             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");
1465         avio_wb32(pb, mxf->channel_count);
1466     } else {
1467         avio_wb32(pb, st->codecpar->channels);
1468     }
1469
1470     mxf_write_local_tag(s, 4, 0x3D01);
1471     avio_wb32(pb, av_get_bits_per_sample(st->codecpar->codec_id));
1472
1473     return pos;
1474 }
1475
1476 static int64_t mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key)
1477 {
1478     AVIOContext *pb = s->pb;
1479     int64_t pos = mxf_write_generic_sound_common(s, st, key);
1480
1481     mxf_write_local_tag(s, 2, 0x3D0A);
1482     avio_wb16(pb, st->codecpar->block_align);
1483
1484     // avg bytes per sec
1485     mxf_write_local_tag(s, 4, 0x3D09);
1486     avio_wb32(pb, st->codecpar->block_align*st->codecpar->sample_rate);
1487
1488     return pos;
1489 }
1490
1491 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1492 {
1493     int64_t pos = mxf_write_wav_common(s, st, mxf_wav_descriptor_key);
1494     mxf_update_klv_size(s->pb, pos);
1495 }
1496
1497 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1498 {
1499     int64_t pos = mxf_write_wav_common(s, st, mxf_aes3_descriptor_key);
1500     mxf_update_klv_size(s->pb, pos);
1501 }
1502
1503 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1504 {
1505     int64_t pos = mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key);
1506     mxf_update_klv_size(s->pb, pos);
1507 }
1508
1509 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 };
1510
1511 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1512 {
1513     MXFContext *mxf = s->priv_data;
1514     AVIOContext *pb = s->pb;
1515     int name_size = mxf_utf16_local_tag_length(name);
1516     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1517
1518     if (!name_size || indirect_value_size == 13)
1519         return 1;
1520
1521     mxf_write_metadata_key(pb, 0x013f00);
1522     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1523
1524     // write instance UID
1525     mxf_write_local_tag(s, 16, 0x3C0A);
1526     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1527
1528     // write name
1529     mxf_write_local_tag_utf16(s, 0x5001, name); // Name
1530
1531     // write indirect value
1532     mxf_write_local_tag(s, indirect_value_size, 0x5003);
1533     avio_write(pb, mxf_indirect_value_utf16le, 17);
1534     avio_put_str16le(pb, value);
1535
1536     mxf->tagged_value_count++;
1537     return 0;
1538 }
1539
1540 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1541 {
1542     MXFContext *mxf = s->priv_data;
1543     AVDictionaryEntry *t = NULL;
1544     int count = 0;
1545
1546     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1547         if (mxf->tagged_value_count >= UINT16_MAX) {
1548             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1549             return count;
1550         }
1551
1552         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1553             count++;
1554     }
1555     return count;
1556 }
1557
1558 static void mxf_write_package(AVFormatContext *s, MXFPackage *package)
1559 {
1560     MXFContext *mxf = s->priv_data;
1561     AVIOContext *pb = s->pb;
1562     int i, track_count = s->nb_streams+1;
1563     int name_size = mxf_utf16_local_tag_length(package->name);
1564     int user_comment_count = 0;
1565
1566     if (package->type == MaterialPackage) {
1567         if (mxf->store_user_comments)
1568             user_comment_count = mxf_write_user_comments(s, s->metadata);
1569         mxf_write_metadata_key(pb, 0x013600);
1570         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1571         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);
1572     } else {
1573         mxf_write_metadata_key(pb, 0x013700);
1574         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1575         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference
1576     }
1577
1578     // write uid
1579     mxf_write_local_tag(s, 16, 0x3C0A);
1580     mxf_write_uuid(pb, package->type, package->instance);
1581     av_log(s, AV_LOG_DEBUG, "package type:%d\n", package->type);
1582     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1583
1584     // write package umid
1585     mxf_write_local_tag(s, 32, 0x4401);
1586     mxf_write_umid(s, package->instance);
1587     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1588
1589     // package name
1590     if (name_size)
1591         mxf_write_local_tag_utf16(s, 0x4402, package->name);
1592
1593     // package creation date
1594     mxf_write_local_tag(s, 8, 0x4405);
1595     avio_wb64(pb, mxf->timestamp);
1596
1597     // package modified date
1598     mxf_write_local_tag(s, 8, 0x4404);
1599     avio_wb64(pb, mxf->timestamp);
1600
1601     // write track refs
1602     mxf_write_local_tag(s, track_count*16 + 8, 0x4403);
1603     mxf_write_refs_count(pb, track_count);
1604     // these are the uuids of the tracks the will be written in mxf_write_track
1605     for (i = 0; i < track_count; i++)
1606         mxf_write_uuid(pb, Track,  mxf->track_instance_count + i);
1607
1608     // write user comment refs
1609     if (mxf->store_user_comments) {
1610         mxf_write_local_tag(s, user_comment_count*16 + 8, 0x4406);
1611         mxf_write_refs_count(pb, user_comment_count);
1612         for (i = 0; i < user_comment_count; i++)
1613             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1614     }
1615
1616     // write multiple descriptor reference
1617     if (package->type == SourcePackage && package->instance == 1) {
1618         mxf_write_local_tag(s, 16, 0x4701);
1619         if (s->nb_streams > 1) {
1620             mxf_write_uuid(pb, MultipleDescriptor, 0);
1621             mxf_write_multi_descriptor(s);
1622         } else
1623             mxf_write_uuid(pb, SubDescriptor, 0);
1624     } else if (package->type == SourcePackage && package->instance == 2) {
1625         mxf_write_local_tag(s, 16, 0x4701);
1626         mxf_write_uuid(pb, TapeDescriptor, 0);
1627         mxf_write_tape_descriptor(s);
1628     }
1629
1630     /*
1631      * for every 1 track in a package there is 1 sequence and 1 component.
1632      * all 3 of these elements share the same instance number for generating
1633      * there instance uuids. mxf->track_instance_count stores this value.
1634      * mxf->track_instance_count is incremented after a group of all 3 of
1635      * these elements are written.
1636      */
1637
1638     // write timecode track
1639     mxf_write_track(s, mxf->timecode_track, package);
1640     mxf_write_sequence(s, mxf->timecode_track, package);
1641     mxf_write_timecode_component(s, mxf->timecode_track, package);
1642     mxf->track_instance_count++;
1643
1644     for (i = 0; i < s->nb_streams; i++) {
1645         AVStream *st = s->streams[i];
1646         mxf_write_track(s, st, package);
1647         mxf_write_sequence(s, st, package);
1648         mxf_write_structural_component(s, st, package);
1649         mxf->track_instance_count++;
1650
1651         if (package->type == SourcePackage && package->instance == 1) {
1652             MXFStreamContext *sc = st->priv_data;
1653             mxf_essence_container_uls[sc->index].write_desc(s, st);
1654         }
1655     }
1656 }
1657
1658 static int mxf_write_essence_container_data(AVFormatContext *s)
1659 {
1660     AVIOContext *pb = s->pb;
1661
1662     mxf_write_metadata_key(pb, 0x012300);
1663     klv_encode_ber_length(pb, 72);
1664
1665     mxf_write_local_tag(s, 16, 0x3C0A); // Instance UID
1666     mxf_write_uuid(pb, EssenceContainerData, 0);
1667
1668     mxf_write_local_tag(s, 32, 0x2701); // Linked Package UID
1669     mxf_write_umid(s, 1);
1670
1671     mxf_write_local_tag(s, 4, 0x3F07); // BodySID
1672     avio_wb32(pb, 1);
1673
1674     mxf_write_local_tag(s, 4, 0x3F06); // IndexSID
1675     avio_wb32(pb, 2);
1676
1677     return 0;
1678 }
1679
1680 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1681 {
1682     MXFContext *mxf = s->priv_data;
1683     AVDictionaryEntry *entry = NULL;
1684     AVStream *st = NULL;
1685     int i;
1686     MXFPackage packages[3] = {{0}};
1687     int package_count = 2;
1688     packages[0].type = MaterialPackage;
1689     packages[1].type = SourcePackage;
1690     packages[1].instance = 1;
1691     packages[0].ref = &packages[1];
1692
1693
1694     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1695        packages[0].name = entry->value;
1696
1697     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1698         packages[1].name = entry->value;
1699     } else {
1700         /* check if any of the streams contain a file_package_name */
1701         for (i = 0; i < s->nb_streams; i++) {
1702             st = s->streams[i];
1703             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1704                 packages[1].name = entry->value;
1705                 break;
1706             }
1707         }
1708     }
1709
1710     entry = av_dict_get(s->metadata, "reel_name", NULL, 0);
1711     if (entry) {
1712         packages[2].name = entry->value;
1713         packages[2].type = SourcePackage;
1714         packages[2].instance = 2;
1715         packages[1].ref = &packages[2];
1716         package_count = 3;
1717     }
1718
1719     mxf_write_preface(s);
1720     mxf_write_identification(s);
1721     mxf_write_content_storage(s, packages, package_count);
1722     mxf->track_instance_count = 0;
1723     for (i = 0; i < package_count; i++)
1724         mxf_write_package(s, &packages[i]);
1725     mxf_write_essence_container_data(s);
1726     return 0;
1727 }
1728
1729 static unsigned klv_fill_size(uint64_t size)
1730 {
1731     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1732     if (pad < 20) // smallest fill item possible
1733         return pad + KAG_SIZE;
1734     else
1735         return pad & (KAG_SIZE-1);
1736 }
1737
1738 static void mxf_write_index_table_segment(AVFormatContext *s)
1739 {
1740     MXFContext *mxf = s->priv_data;
1741     AVIOContext *pb = s->pb;
1742     int i, j, temporal_reordering = 0;
1743     int key_index = mxf->last_key_index;
1744     int prev_non_b_picture = 0;
1745     int audio_frame_size = 0;
1746     int64_t pos;
1747
1748     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1749
1750     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1751         return;
1752
1753     avio_write(pb, index_table_segment_key, 16);
1754
1755     klv_encode_ber4_length(pb, 0);
1756     pos = avio_tell(pb);
1757
1758     // instance id
1759     mxf_write_local_tag(s, 16, 0x3C0A);
1760     mxf_write_uuid(pb, IndexTableSegment, 0);
1761
1762     // index edit rate
1763     mxf_write_local_tag(s, 8, 0x3F0B);
1764     avio_wb32(pb, mxf->time_base.den);
1765     avio_wb32(pb, mxf->time_base.num);
1766
1767     // index start position
1768     mxf_write_local_tag(s, 8, 0x3F0C);
1769     avio_wb64(pb, mxf->last_indexed_edit_unit);
1770
1771     // index duration
1772     mxf_write_local_tag(s, 8, 0x3F0D);
1773     if (mxf->edit_unit_byte_count)
1774         avio_wb64(pb, 0); // index table covers whole container
1775     else
1776         avio_wb64(pb, mxf->edit_units_count);
1777
1778     // edit unit byte count
1779     mxf_write_local_tag(s, 4, 0x3F05);
1780     avio_wb32(pb, mxf->edit_unit_byte_count);
1781
1782     // index sid
1783     mxf_write_local_tag(s, 4, 0x3F06);
1784     avio_wb32(pb, 2);
1785
1786     // body sid
1787     mxf_write_local_tag(s, 4, 0x3F07);
1788     avio_wb32(pb, 1);
1789
1790     // real slice count - 1
1791     mxf_write_local_tag(s, 1, 0x3F08);
1792     avio_w8(pb, !mxf->edit_unit_byte_count); // only one slice for CBR
1793
1794     // delta entry array
1795     mxf_write_local_tag(s, 8 + (s->nb_streams+1)*6, 0x3F09);
1796     avio_wb32(pb, s->nb_streams+1); // num of entries
1797     avio_wb32(pb, 6);               // size of one entry
1798     // write system item delta entry
1799     avio_w8(pb, 0);
1800     avio_w8(pb, 0); // slice entry
1801     avio_wb32(pb, 0); // element delta
1802     // write each stream delta entry
1803     for (i = 0; i < s->nb_streams; i++) {
1804         AVStream *st = s->streams[i];
1805         MXFStreamContext *sc = st->priv_data;
1806         avio_w8(pb, sc->temporal_reordering);
1807         if (sc->temporal_reordering)
1808             temporal_reordering = 1;
1809         if (mxf->edit_unit_byte_count) {
1810             avio_w8(pb, 0); // slice number
1811             avio_wb32(pb, sc->slice_offset);
1812         } else if (i == 0) { // video track
1813             avio_w8(pb, 0); // slice number
1814             avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1815         } else { // audio or data track
1816             if (!audio_frame_size) {
1817                 audio_frame_size = sc->frame_size;
1818                 audio_frame_size += klv_fill_size(audio_frame_size);
1819             }
1820             avio_w8(pb, 1);
1821             avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1822         }
1823     }
1824
1825     if (!mxf->edit_unit_byte_count) {
1826         MXFStreamContext *sc = s->streams[0]->priv_data;
1827         mxf_write_local_tag(s, 8 + mxf->edit_units_count*15, 0x3F0A);
1828         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1829         avio_wb32(pb, 15);  // size of one entry
1830
1831         for (i = 0; i < mxf->edit_units_count; i++) {
1832             int temporal_offset = 0;
1833
1834             if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame
1835                 sc->max_gop = FFMAX(sc->max_gop, i - mxf->last_key_index);
1836                 mxf->last_key_index = key_index;
1837                 key_index = i;
1838             }
1839
1840             if (temporal_reordering) {
1841                 int pic_num_in_gop = i - key_index;
1842                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1843                     for (j = key_index; j < mxf->edit_units_count; j++) {
1844                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1845                             break;
1846                     }
1847                     if (j == mxf->edit_units_count)
1848                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1849                     temporal_offset = j - key_index - pic_num_in_gop;
1850                 }
1851             }
1852             avio_w8(pb, temporal_offset);
1853
1854             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1855                 sc->b_picture_count = FFMAX(sc->b_picture_count, i - prev_non_b_picture);
1856                 avio_w8(pb, mxf->last_key_index - i);
1857             } else {
1858                 avio_w8(pb, key_index - i); // key frame offset
1859                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1860                     mxf->last_key_index = key_index;
1861                 prev_non_b_picture = i;
1862             }
1863
1864             if (!(mxf->index_entries[i].flags & 0x33) && // I-frame
1865                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1866                 mxf->index_entries[i].flags |= 0x80; // random access
1867             avio_w8(pb, mxf->index_entries[i].flags);
1868             // stream offset
1869             avio_wb64(pb, mxf->index_entries[i].offset);
1870             if (s->nb_streams > 1)
1871                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1872             else
1873                 avio_wb32(pb, 0);
1874         }
1875
1876         mxf->last_key_index = key_index - mxf->edit_units_count;
1877         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1878         mxf->edit_units_count = 0;
1879     }
1880
1881     mxf_update_klv_size(pb, pos);
1882 }
1883
1884 static void mxf_write_klv_fill(AVFormatContext *s)
1885 {
1886     unsigned pad = klv_fill_size(avio_tell(s->pb));
1887     if (pad) {
1888         avio_write(s->pb, klv_fill_key, 16);
1889         pad -= 16 + 4;
1890         klv_encode_ber4_length(s->pb, pad);
1891         ffio_fill(s->pb, 0, pad);
1892         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1893     }
1894 }
1895
1896 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1897                                 int indexsid,
1898                                 const uint8_t *key, int write_metadata)
1899 {
1900     MXFContext *mxf = s->priv_data;
1901     AVIOContext *pb = s->pb;
1902     int64_t header_byte_count_offset;
1903     unsigned index_byte_count = 0;
1904     uint64_t partition_offset = avio_tell(pb);
1905     int err;
1906
1907     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1908         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1909             12+mxf->edit_units_count*15;
1910     else if (mxf->edit_unit_byte_count && indexsid)
1911         index_byte_count = 80;
1912
1913     if (index_byte_count) {
1914         index_byte_count += 16 + 4; // add encoded ber4 length
1915         index_byte_count += klv_fill_size(index_byte_count);
1916     }
1917
1918     if (key && !memcmp(key, body_partition_key, 16)) {
1919         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1920                                      sizeof(*mxf->body_partition_offset))) < 0) {
1921             mxf->body_partitions_count = 0;
1922             return err;
1923         }
1924         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1925     }
1926
1927     // write klv
1928     if (key)
1929         avio_write(pb, key, 16);
1930     else
1931         avio_write(pb, body_partition_key, 16);
1932
1933     klv_encode_ber4_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1934
1935     // write partition value
1936     avio_wb16(pb, 1); // majorVersion
1937     avio_wb16(pb, 3); // minorVersion
1938     avio_wb32(pb, KAG_SIZE); // KAGSize
1939
1940     avio_wb64(pb, partition_offset); // ThisPartition
1941
1942     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1943         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1944     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1945         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1946     else
1947         avio_wb64(pb, 0);
1948
1949     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1950
1951     // set offset
1952     header_byte_count_offset = avio_tell(pb);
1953     avio_wb64(pb, 0); // headerByteCount, update later
1954
1955     // indexTable
1956     avio_wb64(pb, index_byte_count); // indexByteCount
1957     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1958
1959     // BodyOffset
1960     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1961         avio_wb64(pb, mxf->body_offset);
1962     else
1963         avio_wb64(pb, 0);
1964
1965     avio_wb32(pb, bodysid); // bodySID
1966
1967     // operational pattern
1968     if (s->oformat == &ff_mxf_opatom_muxer)
1969         avio_write(pb, opatom_ul, 16);
1970     else
1971         avio_write(pb, op1a_ul, 16);
1972
1973     // essence container
1974     mxf_write_essence_container_refs(s);
1975
1976     if (write_metadata) {
1977         // mark the start of the headermetadata and calculate metadata size
1978         int64_t pos, start;
1979         unsigned header_byte_count;
1980
1981         mxf_write_klv_fill(s);
1982         start = avio_tell(s->pb);
1983         mxf_write_primer_pack(s);
1984         mxf_write_klv_fill(s);
1985         mxf_write_header_metadata_sets(s);
1986         pos = avio_tell(s->pb);
1987         header_byte_count = pos - start + klv_fill_size(pos);
1988
1989         // update header_byte_count
1990         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1991         avio_wb64(pb, header_byte_count);
1992         avio_seek(pb, pos, SEEK_SET);
1993     }
1994
1995     if(key)
1996         avio_write_marker(pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
1997
1998     return 0;
1999 }
2000
2001 static const struct {
2002     int profile;
2003     UID codec_ul;
2004 } mxf_prores_codec_uls[] = {
2005     { FF_PROFILE_PRORES_PROXY,    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x01,0x00 } },
2006     { FF_PROFILE_PRORES_LT,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x02,0x00 } },
2007     { FF_PROFILE_PRORES_STANDARD, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 } },
2008     { FF_PROFILE_PRORES_HQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x04,0x00 } },
2009     { FF_PROFILE_PRORES_4444,     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x05,0x00 } },
2010     { FF_PROFILE_PRORES_XQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x06,0x00 } },
2011 };
2012
2013 static int mxf_parse_prores_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2014 {
2015     MXFContext *mxf = s->priv_data;
2016     MXFStreamContext *sc = st->priv_data;
2017     int i, profile;
2018
2019     if (mxf->header_written)
2020         return 1;
2021
2022     profile = st->codecpar->profile;
2023     for (i = 0; i < FF_ARRAY_ELEMS(mxf_prores_codec_uls); i++) {
2024         if (profile == mxf_prores_codec_uls[i].profile) {
2025             sc->codec_ul = &mxf_prores_codec_uls[i].codec_ul;
2026             break;
2027         }
2028     }
2029     if (i == FF_ARRAY_ELEMS(mxf_prores_codec_uls))
2030         return 0;
2031
2032     sc->frame_size = pkt->size;
2033
2034     return 1;
2035 }
2036
2037 static const struct {
2038     int cid;
2039     UID codec_ul;
2040 } mxf_dnxhd_codec_uls[] = {
2041     { 1235, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 } }, // 1080p 10bit HIGH
2042     { 1237, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 } }, // 1080p 8bit MED
2043     { 1238, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 } }, // 1080p 8bit HIGH
2044     { 1241, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 } }, // 1080i 10bit HIGH
2045     { 1242, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 } }, // 1080i 8bit MED
2046     { 1243, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 } }, // 1080i 8bit HIGH
2047     { 1244, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x0a,0x00,0x00 } }, // 1080i 8bit TR
2048     { 1250, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 } }, // 720p 10bit
2049     { 1251, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 } }, // 720p 8bit HIGH
2050     { 1252, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 } }, // 720p 8bit MED
2051     { 1253, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 } }, // 720p 8bit LOW
2052     { 1256, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x16,0x00,0x00 } }, // 1080p 10bit 444
2053     { 1258, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x18,0x00,0x00 } }, // 720p 8bit TR
2054     { 1259, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x19,0x00,0x00 } }, // 1080p 8bit TR
2055     { 1260, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x1a,0x00,0x00 } }, // 1080i 8bit TR MBAFF
2056     { 1270, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x24,0x00,0x00 } }, // DNXHR 444
2057     { 1271, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x25,0x00,0x00 } }, // DNXHR HQX
2058     { 1272, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x26,0x00,0x00 } }, // DNXHR HQ
2059     { 1273, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x27,0x00,0x00 } }, // DNXHR SQ
2060     { 1274, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x28,0x00,0x00 } }, // DNXHR LB
2061 };
2062
2063 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2064 {
2065     MXFContext *mxf = s->priv_data;
2066     MXFStreamContext *sc = st->priv_data;
2067     int i, cid, frame_size = 0;
2068
2069     if (mxf->header_written)
2070         return 1;
2071
2072     if (pkt->size < 43)
2073         return 0;
2074
2075     cid = AV_RB32(pkt->data + 0x28);
2076     for (i = 0; i < FF_ARRAY_ELEMS(mxf_dnxhd_codec_uls); i++) {
2077         if (cid == mxf_dnxhd_codec_uls[i].cid) {
2078             sc->codec_ul = &mxf_dnxhd_codec_uls[i].codec_ul;
2079             break;
2080         }
2081     }
2082     if (i == FF_ARRAY_ELEMS(mxf_dnxhd_codec_uls))
2083         return 0;
2084
2085     sc->component_depth = 0;
2086     switch (pkt->data[0x21] >> 5) {
2087     case 1: sc->component_depth = 8; break;
2088     case 2: sc->component_depth = 10; break;
2089     case 3: sc->component_depth = 12; break;
2090     }
2091     if (!sc->component_depth)
2092         return 0;
2093
2094     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) == DNXHD_VARIABLE) {
2095         frame_size = avpriv_dnxhd_get_hr_frame_size(cid, st->codecpar->width, st->codecpar->height);
2096     }
2097     if (frame_size < 0)
2098         return 0;
2099
2100     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
2101         return 0;
2102
2103     if (cid >= 1270) { // RI raster
2104         av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2105                   st->codecpar->width, st->codecpar->height,
2106                   INT_MAX);
2107     } else {
2108         sc->aspect_ratio = (AVRational){ 16, 9 };
2109     }
2110
2111     sc->frame_size = pkt->size;
2112
2113     return 1;
2114 }
2115
2116 static const struct {
2117     const UID container_ul;
2118     const UID codec_ul;
2119 } mxf_dv_uls[] = {
2120     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x01,0x01 }, // IEC DV25 525/60
2121       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x01,0x00 } },
2122     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x02,0x01 }, // IEC DV25 626/50
2123       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 } },
2124     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 }, // DV25 525/60
2125       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 }, },
2126     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, // DV25 625/50
2127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, },
2128     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 }, // DV50 525/60
2129       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 }, },
2130     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 }, // DV50 625/50
2131       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, },
2132     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 }, // DV100 1080/60
2133       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 }, },
2134     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 }, // DV100 1080/50
2135       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 }, },
2136     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 }, // DV100 720/60
2137       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 }, },
2138     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 }, // DV100 720/50
2139       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 }, },
2140 };
2141
2142 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2143 {
2144     MXFContext *mxf = s->priv_data;
2145     MXFStreamContext *sc = st->priv_data;
2146     uint8_t *vs_pack, *vsc_pack;
2147     int apt, ul_index, stype, pal;
2148
2149     if (mxf->header_written)
2150         return 1;
2151
2152     // Check for minimal frame size
2153     if (pkt->size < 120000)
2154         return -1;
2155
2156     apt      = pkt->data[4] & 0x7;
2157     vs_pack  = pkt->data + 80*5 + 48;
2158     vsc_pack = pkt->data + 80*5 + 53;
2159     stype    = vs_pack[3] & 0x1f;
2160     pal      = (vs_pack[3] >> 5) & 0x1;
2161
2162     if ((vsc_pack[2] & 0x07) == 0x02) {
2163         sc->aspect_ratio = (AVRational){ 16, 9 };
2164     } else {
2165         sc->aspect_ratio = (AVRational){ 4, 3 };
2166     }
2167
2168     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
2169     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
2170     // and set field dominance accordingly
2171     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
2172
2173     switch (stype) {
2174     case 0x18: // DV100 720p
2175         ul_index = 8+pal;
2176         if (sc->interlaced) {
2177             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
2178             sc->interlaced = 0;
2179         }
2180         break;
2181     case 0x14: // DV100 1080i
2182         ul_index = 6+pal;
2183         break;
2184     case 0x04: // DV50
2185         ul_index = 4+pal;
2186         break;
2187     default: // DV25
2188         if (!apt) { // IEC
2189             ul_index = 0+pal;
2190         } else {
2191             ul_index = 2+pal;
2192         }
2193     }
2194
2195     sc->container_ul = &mxf_dv_uls[ul_index].container_ul;
2196     sc->codec_ul = &mxf_dv_uls[ul_index].codec_ul;
2197
2198     sc->frame_size = pkt->size;
2199
2200     return 1;
2201 }
2202
2203 static const struct {
2204     UID uid;
2205     int frame_size;
2206     int profile;
2207     uint8_t interlaced;
2208     int intra_only; // 1 or 0 when there are separate UIDs for Long GOP and Intra, -1 when Intra/LGOP detection can be ignored
2209 } mxf_h264_codec_uls[] = {
2210     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 },      0,  66, 0, -1 }, // AVC Baseline
2211     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x20,0x01 },      0,  77, 0, -1 }, // AVC Main
2212     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x30,0x01 },      0,  88, 0, -1 }, // AVC Extended
2213     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x40,0x01 },      0, 100, 0, -1 }, // AVC High
2214     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x50,0x01 },      0, 110, 0,  0 }, // AVC High 10
2215     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x60,0x01 },      0, 122, 0,  0 }, // AVC High 422
2216     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x70,0x01 },      0, 244, 0,  0 }, // AVC High 444
2217     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0,  1 }, // AVC High 10 Intra
2218     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960, 110, 1,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/59.94i
2219     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088, 110, 1,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/50i
2220     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/29.97p
2221     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/25p
2222     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 720/59.94p
2223     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 720/50p
2224     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0,  1 }, // AVC High 422 Intra
2225     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576, 122, 1,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/59.94i
2226     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832, 122, 1,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/50i
2227     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/29.97p
2228     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/25p
2229     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 720/59.94p
2230     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 720/50p
2231     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x40,0x01 },      0, 244, 0,  1 }, // AVC High 444 Intra
2232     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x50,0x01 },      0,  44, 0, -1 }, // AVC CAVLC 444
2233 };
2234
2235 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
2236                                 AVPacket *pkt, MXFIndexEntry *e)
2237 {
2238     MXFContext *mxf = s->priv_data;
2239     MXFStreamContext *sc = st->priv_data;
2240     H264SPS seq, *const sps = &seq;
2241     GetBitContext gb;
2242     const uint8_t *buf = pkt->data;
2243     const uint8_t *buf_end = pkt->data + pkt->size;
2244     const uint8_t *nal_end;
2245     const UID *codec_ul = NULL;
2246     uint32_t state = -1;
2247     int extra_size = 512; // support AVC Intra files without SPS/PPS header
2248     int i, frame_size, slice_type, has_sps = 0, intra_only = 0, ret;
2249
2250     for (;;) {
2251         buf = avpriv_find_start_code(buf, buf_end, &state);
2252         if (buf >= buf_end)
2253             break;
2254
2255         switch (state & 0x1f) {
2256         case H264_NAL_SPS:
2257             e->flags |= 0x40;
2258
2259             if (mxf->header_written)
2260                 break;
2261
2262             nal_end = ff_avc_find_startcode(buf, buf_end);
2263             ret = ff_avc_decode_sps(sps, buf, nal_end - buf);
2264             if (ret < 0) {
2265                 av_log(s, AV_LOG_ERROR, "error parsing sps\n");
2266                 return 0;
2267             }
2268             has_sps = 1;
2269
2270             sc->aspect_ratio.num = st->codecpar->width * sps->sar.num;
2271             sc->aspect_ratio.den = st->codecpar->height * sps->sar.den;
2272             av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2273                       sc->aspect_ratio.num, sc->aspect_ratio.den, 1024*1024);
2274             intra_only = (sps->constraint_set_flags >> 3) & 1;
2275             sc->interlaced = !sps->frame_mbs_only_flag;
2276             sc->component_depth = sps->bit_depth_luma;
2277
2278             buf = nal_end;
2279             break;
2280         case H264_NAL_PPS:
2281             if (e->flags & 0x40) { // sequence header present
2282                 e->flags |= 0x80; // random access
2283                 extra_size = 0;
2284             }
2285             break;
2286         case H264_NAL_IDR_SLICE:
2287             e->flags |= 0x04; // IDR Picture
2288             buf = buf_end;
2289             break;
2290         case H264_NAL_SLICE:
2291             init_get_bits8(&gb, buf, buf_end - buf);
2292             get_ue_golomb_long(&gb); // skip first_mb_in_slice
2293             slice_type = get_ue_golomb_31(&gb);
2294             switch (slice_type % 5) {
2295             case 0:
2296                 e->flags |= 0x20; // P Picture
2297                 e->flags |= 0x06; // P Picture
2298                 break;
2299             case 1:
2300                 e->flags |= 0x30; // B Picture
2301                 e->flags |= 0x03; // non-referenced B Picture
2302                 break;
2303             }
2304             buf = buf_end;
2305             break;
2306         default:
2307             break;
2308         }
2309     }
2310
2311     if (mxf->header_written)
2312         return 1;
2313
2314     if (!has_sps)
2315         sc->interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
2316     frame_size = pkt->size + extra_size;
2317
2318     for (i = 0; i < FF_ARRAY_ELEMS(mxf_h264_codec_uls); i++) {
2319         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
2320             codec_ul = &mxf_h264_codec_uls[i].uid;
2321             sc->component_depth = 10; // AVC Intra is always 10 Bit
2322             sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
2323             st->codecpar->profile = mxf_h264_codec_uls[i].profile;
2324             sc->avc_intra = 1;
2325             mxf->cbr_index = 1;
2326             sc->frame_size = pkt->size;
2327             if (sc->interlaced)
2328                 sc->field_dominance = 1; // top field first is mandatory for AVC Intra
2329             break;
2330         } else if (has_sps && mxf_h264_codec_uls[i].frame_size == 0 &&
2331                    mxf_h264_codec_uls[i].profile == sps->profile_idc &&
2332                    (mxf_h264_codec_uls[i].intra_only < 0 ||
2333                     mxf_h264_codec_uls[i].intra_only == intra_only)) {
2334             codec_ul = &mxf_h264_codec_uls[i].uid;
2335             st->codecpar->profile = sps->profile_idc;
2336             st->codecpar->level = sps->level_idc;
2337             // continue to check for avc intra
2338         }
2339     }
2340
2341     if (!codec_ul) {
2342         av_log(s, AV_LOG_ERROR, "h264 profile not supported\n");
2343         return 0;
2344     }
2345     sc->codec_ul = codec_ul;
2346
2347     return 1;
2348 }
2349
2350 static const UID mxf_mpeg2_codec_uls[] = {
2351     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
2352     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
2353     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
2354     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
2355     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
2356     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
2357     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
2358     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
2359     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
2360     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
2361 };
2362
2363 static const UID *mxf_get_mpeg2_codec_ul(AVCodecParameters *par)
2364 {
2365     int long_gop = 1;
2366
2367     if (par->profile == 4) { // Main
2368         if (par->level == 8) // Main
2369             return &mxf_mpeg2_codec_uls[0+long_gop];
2370         else if (par->level == 4) // High
2371             return &mxf_mpeg2_codec_uls[4+long_gop];
2372         else if (par->level == 6) // High 14
2373             return &mxf_mpeg2_codec_uls[8+long_gop];
2374     } else if (par->profile == 0) { // 422
2375         if (par->level == 5) // Main
2376             return &mxf_mpeg2_codec_uls[2+long_gop];
2377         else if (par->level == 2) // High
2378             return &mxf_mpeg2_codec_uls[6+long_gop];
2379     }
2380     return NULL;
2381 }
2382
2383 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
2384                                  AVPacket *pkt, MXFIndexEntry *e)
2385 {
2386     MXFStreamContext *sc = st->priv_data;
2387     uint32_t c = -1;
2388     int i;
2389
2390     for(i = 0; i < pkt->size - 4; i++) {
2391         c = (c<<8) + pkt->data[i];
2392         if (c == 0x1b5) {
2393             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
2394                 st->codecpar->profile = pkt->data[i+1] & 0x07;
2395                 st->codecpar->level   = pkt->data[i+2] >> 4;
2396                 sc->low_delay = pkt->data[i+6] >> 7;
2397             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
2398                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
2399                 if (sc->interlaced)
2400                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
2401                 break;
2402             }
2403         } else if (c == 0x1b8) { // gop
2404             if (pkt->data[i+4]>>6 & 0x01) { // closed
2405                 if (sc->seq_closed_gop == -1)
2406                     sc->seq_closed_gop = 1;
2407                 sc->closed_gop = 1;
2408                 if (e->flags & 0x40) // sequence header present
2409                     e->flags |= 0x80; // random access
2410             } else {
2411                 sc->seq_closed_gop = 0;
2412                 sc->closed_gop = 0;
2413             }
2414         } else if (c == 0x1b3) { // seq
2415             e->flags |= 0x40;
2416             switch ((pkt->data[i+4]>>4) & 0xf) {
2417             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
2418             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
2419             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
2420             default:
2421                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2422                           st->codecpar->width, st->codecpar->height, 1024*1024);
2423             }
2424         } else if (c == 0x100) { // pic
2425             int pict_type = (pkt->data[i+2]>>3) & 0x07;
2426             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
2427             if (pict_type == 2) { // P-frame
2428                 e->flags |= 0x22;
2429                 sc->closed_gop = 0; // reset closed GOP, don't matter anymore
2430             } else if (pict_type == 3) { // B-frame
2431                 if (sc->closed_gop)
2432                     e->flags |= 0x13; // only backward prediction
2433                 else
2434                     e->flags |= 0x33;
2435                 sc->temporal_reordering = -1;
2436             } else if (!pict_type) {
2437                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
2438                 return 0;
2439             }
2440         }
2441     }
2442     if (s->oformat != &ff_mxf_d10_muxer) {
2443         const UID *codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);
2444         if (!codec_ul)
2445             return 0;
2446         sc->codec_ul = codec_ul;
2447     }
2448     return 1;
2449 }
2450
2451 static uint64_t mxf_parse_timestamp(int64_t timestamp64)
2452 {
2453     time_t timestamp = timestamp64 / 1000000;
2454     struct tm tmbuf;
2455     struct tm *time = gmtime_r(&timestamp, &tmbuf);
2456     if (!time)
2457         return 0;
2458     return (uint64_t)(time->tm_year+1900) << 48 |
2459            (uint64_t)(time->tm_mon+1)     << 40 |
2460            (uint64_t) time->tm_mday       << 32 |
2461                       time->tm_hour       << 24 |
2462                       time->tm_min        << 16 |
2463                       time->tm_sec        << 8  |
2464                       (timestamp64 % 1000000) / 4000;
2465 }
2466
2467 static void mxf_gen_umid(AVFormatContext *s)
2468 {
2469     MXFContext *mxf = s->priv_data;
2470     uint32_t seed = av_get_random_seed();
2471     uint64_t umid = seed + 0x5294713400000000LL;
2472
2473     AV_WB64(mxf->umid  , umid);
2474     AV_WB64(mxf->umid+8, umid>>8);
2475
2476     mxf->instance_number = seed & 0xFFFFFF;
2477 }
2478
2479 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational tbc)
2480 {
2481     MXFContext *mxf = s->priv_data;
2482     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2483
2484     if (!ff_mxf_get_content_package_rate(tbc)) {
2485         if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
2486             av_log(s, AV_LOG_ERROR, "Unsupported frame rate %d/%d. Set -strict option to 'unofficial' or lower in order to allow it!\n", tbc.den, tbc.num);
2487             return AVERROR(EINVAL);
2488         } else {
2489             av_log(s, AV_LOG_WARNING, "Unofficial frame rate %d/%d.\n", tbc.den, tbc.num);
2490         }
2491     }
2492
2493     mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2494     if (!tcr)
2495         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2496
2497     if (tcr)
2498         return av_timecode_init_from_string(&mxf->tc, av_inv_q(tbc), tcr->value, s);
2499     else
2500         return av_timecode_init(&mxf->tc, av_inv_q(tbc), 0, 0, s);
2501 }
2502
2503 static int mxf_write_header(AVFormatContext *s)
2504 {
2505     MXFContext *mxf = s->priv_data;
2506     int i, ret;
2507     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2508     int64_t timestamp = 0;
2509
2510     if (!s->nb_streams)
2511         return -1;
2512
2513     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {
2514         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2515         return -1;
2516     }
2517
2518     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))
2519         mxf->store_user_comments = 0;
2520
2521     for (i = 0; i < s->nb_streams; i++) {
2522         AVStream *st = s->streams[i];
2523         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2524         if (!sc)
2525             return AVERROR(ENOMEM);
2526         st->priv_data = sc;
2527         sc->index = -1;
2528
2529         if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2530             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2531             return -1;
2532         }
2533
2534         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2535             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codecpar->format);
2536             // TODO: should be avg_frame_rate
2537             AVRational tbc = st->time_base;
2538             // Default component depth to 8
2539             sc->component_depth = 8;
2540             sc->h_chroma_sub_sample = 2;
2541             sc->v_chroma_sub_sample = 2;
2542             sc->color_siting = 0xFF;
2543
2544             if (st->codecpar->sample_aspect_ratio.num && st->codecpar->sample_aspect_ratio.den) {
2545                 sc->aspect_ratio = av_mul_q(st->codecpar->sample_aspect_ratio,
2546                                             av_make_q(st->codecpar->width, st->codecpar->height));
2547             }
2548
2549             if (pix_desc) {
2550                 sc->component_depth     = pix_desc->comp[0].depth;
2551                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2552                 sc->v_chroma_sub_sample = 1 << pix_desc->log2_chroma_h;
2553             }
2554             switch (ff_choose_chroma_location(s, st)) {
2555             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2556             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2557             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2558             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2559             }
2560
2561             mxf->content_package_rate = ff_mxf_get_content_package_rate(tbc);
2562             mxf->time_base = tbc;
2563             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2564             if((ret = mxf_init_timecode(s, st, tbc)) < 0)
2565                 return ret;
2566
2567             if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2568                 sc->seq_closed_gop = -1; // unknown yet
2569             }
2570
2571             sc->video_bit_rate = st->codecpar->bit_rate;
2572
2573             if (s->oformat == &ff_mxf_d10_muxer ||
2574                 st->codecpar->codec_id == AV_CODEC_ID_DNXHD ||
2575                 st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO)
2576                 mxf->cbr_index = 1;
2577
2578             if (s->oformat == &ff_mxf_d10_muxer) {
2579                 int ntsc = mxf->time_base.den != 25;
2580                 int ul_index;
2581
2582                 if (st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
2583                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support MPEG-2 Video\n");
2584                     return AVERROR(EINVAL);
2585                 }
2586                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2587                     ul_index = 0;
2588                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && ntsc) {
2589                     ul_index = 1;
2590                 } else if (sc->video_bit_rate == 40000000) {
2591                     ul_index = 2+ntsc;
2592                 } else if (sc->video_bit_rate == 30000000) {
2593                     ul_index = 4+ntsc;
2594                 } else {
2595                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2596                     return -1;
2597                 }
2598
2599                 sc->codec_ul = &mxf_d10_codec_uls[ul_index];
2600                 sc->container_ul = &mxf_d10_container_uls[ul_index];
2601                 sc->index = INDEX_D10_VIDEO;
2602                 sc->signal_standard = 1;
2603                 sc->color_siting = 0;
2604                 sc->frame_size = (int64_t)sc->video_bit_rate *
2605                     mxf->time_base.num / (8*mxf->time_base.den);
2606             }
2607             if (mxf->signal_standard >= 0)
2608                 sc->signal_standard = mxf->signal_standard;
2609         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2610             char bsf_arg[32];
2611             if (st->codecpar->sample_rate != 48000) {
2612                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2613                 return -1;
2614             }
2615             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
2616             if (s->oformat == &ff_mxf_d10_muxer) {
2617                 if (st->index != 1) {
2618                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2619                     return -1;
2620                 }
2621                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2622                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2623                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2624                 }
2625                 sc->index = INDEX_D10_AUDIO;
2626                 sc->container_ul = ((MXFStreamContext*)s->streams[0]->priv_data)->container_ul;
2627                 sc->frame_size = 4 + 8 * av_rescale_rnd(st->codecpar->sample_rate, mxf->time_base.num, mxf->time_base.den, AV_ROUND_UP) * 4;
2628             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2629                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2630
2631                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2632                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2633                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2634                     return AVERROR_PATCHWELCOME;
2635                 }
2636                 if (st->codecpar->channels != 1) {
2637                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2638                     return AVERROR(EINVAL);
2639                 }
2640
2641                 mxf->time_base = st->time_base;
2642                 if((ret = mxf_init_timecode(s, st, tbc)) < 0)
2643                     return ret;
2644
2645                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
2646                 sc->index = INDEX_WAV;
2647             } else {
2648                 mxf->slice_count = 1;
2649                 sc->frame_size = st->codecpar->channels *
2650                                  av_rescale_rnd(st->codecpar->sample_rate, mxf->time_base.num, mxf->time_base.den, AV_ROUND_UP) *
2651                                  av_get_bits_per_sample(st->codecpar->codec_id) / 8;
2652             }
2653             snprintf(bsf_arg, sizeof(bsf_arg), "r=%d/%d", mxf->tc.rate.num, mxf->tc.rate.den);
2654             ret = ff_stream_add_bitstream_filter(st, "pcm_rechunk", bsf_arg);
2655             if (ret < 0)
2656                 return ret;
2657         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2658             AVDictionaryEntry *e = av_dict_get(st->metadata, "data_type", NULL, 0);
2659             if (e && !strcmp(e->value, "vbi_vanc_smpte_436M")) {
2660                 sc->index = INDEX_S436M;
2661             } else {
2662                 av_log(s, AV_LOG_ERROR, "track %d: unsupported data type\n", i);
2663                 return -1;
2664             }
2665             if (st->index != s->nb_streams - 1) {
2666                 av_log(s, AV_LOG_ERROR, "data track must be placed last\n");
2667                 return -1;
2668             }
2669         }
2670
2671         if (sc->index == -1) {
2672             sc->index = mxf_get_essence_container_ul_index(st->codecpar->codec_id);
2673             if (sc->index == -1) {
2674                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2675                        "codec not currently supported in container\n", i);
2676                 return -1;
2677             }
2678         }
2679
2680         if (!sc->codec_ul)
2681             sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2682         if (!sc->container_ul)
2683             sc->container_ul = &mxf_essence_container_uls[sc->index].container_ul;
2684
2685         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2686         sc->track_essence_element_key[15] = present[sc->index];
2687         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2688
2689         if (!present[sc->index])
2690             mxf->essence_container_count++;
2691         present[sc->index]++;
2692     }
2693
2694     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2695         mxf->essence_container_count = 1;
2696     }
2697
2698     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2699         mxf_gen_umid(s);
2700
2701     for (i = 0; i < s->nb_streams; i++) {
2702         MXFStreamContext *sc = s->streams[i]->priv_data;
2703         // update element count
2704         sc->track_essence_element_key[13] = present[sc->index];
2705         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[INDEX_DV].element_ul, 13)) // DV
2706             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2707         else
2708             sc->order = AV_RB32(sc->track_essence_element_key+12);
2709     }
2710
2711     if (ff_parse_creation_time_metadata(s, &timestamp, 0) > 0)
2712         mxf->timestamp = mxf_parse_timestamp(timestamp);
2713     mxf->duration = -1;
2714
2715     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2716     if (!mxf->timecode_track)
2717         return AVERROR(ENOMEM);
2718     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2719     if (!mxf->timecode_track->priv_data)
2720         return AVERROR(ENOMEM);
2721     mxf->timecode_track->index = -1;
2722
2723     return 0;
2724 }
2725
2726 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2727 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 };
2728
2729 static void mxf_write_system_item(AVFormatContext *s)
2730 {
2731     MXFContext *mxf = s->priv_data;
2732     AVIOContext *pb = s->pb;
2733     unsigned frame;
2734     uint32_t time_code;
2735     int i, system_item_bitmap = 0x58; // UL, user date/time stamp, picture present
2736
2737     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2738
2739     // write system metadata pack
2740     avio_write(pb, system_metadata_pack_key, 16);
2741     klv_encode_ber4_length(pb, 57);
2742
2743     for (i = 0; i < s->nb_streams; i++) {
2744         if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2745             system_item_bitmap |= 0x4;
2746         else if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2747             system_item_bitmap |= 0x2;
2748     }
2749     avio_w8(pb, system_item_bitmap);
2750     avio_w8(pb, mxf->content_package_rate); // content package rate
2751     avio_w8(pb, 0x00); // content package type
2752     avio_wb16(pb, 0x00); // channel handle
2753     avio_wb16(pb, frame & 0xFFFF); // continuity count, supposed to overflow
2754     if (mxf->essence_container_count > 1)
2755         avio_write(pb, multiple_desc_ul, 16);
2756     else {
2757         MXFStreamContext *sc = s->streams[0]->priv_data;
2758         avio_write(pb, *sc->container_ul, 16);
2759     }
2760     avio_w8(pb, 0);
2761     avio_wb64(pb, 0);
2762     avio_wb64(pb, 0); // creation date/time stamp
2763
2764     avio_w8(pb, 0x81); // SMPTE 12M time code
2765     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2766     avio_wb32(pb, time_code);
2767     avio_wb32(pb, 0); // binary group data
2768     avio_wb64(pb, 0);
2769
2770     // write system metadata package set
2771     avio_write(pb, system_metadata_package_set_key, 16);
2772     klv_encode_ber4_length(pb, 35);
2773     avio_w8(pb, 0x83); // UMID
2774     avio_wb16(pb, 0x20);
2775     mxf_write_umid(s, 1);
2776 }
2777
2778 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2779 {
2780     MXFContext *mxf = s->priv_data;
2781     AVIOContext *pb = s->pb;
2782     int frame_size = pkt->size / st->codecpar->block_align;
2783     uint8_t *samples = pkt->data;
2784     uint8_t *end = pkt->data + pkt->size;
2785     int i;
2786
2787     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2788
2789     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2790     avio_wl16(pb, frame_size);
2791     avio_w8(pb, (1<<st->codecpar->channels)-1);
2792
2793     while (samples < end) {
2794         for (i = 0; i < st->codecpar->channels; i++) {
2795             uint32_t sample;
2796             if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
2797                 sample = AV_RL24(samples)<< 4;
2798                 samples += 3;
2799             } else {
2800                 sample = AV_RL16(samples)<<12;
2801                 samples += 2;
2802             }
2803             avio_wl32(pb, sample | i);
2804         }
2805         for (; i < 8; i++)
2806             avio_wl32(pb, i);
2807     }
2808 }
2809
2810 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2811 {
2812     MXFContext *mxf = s->priv_data;
2813     AVIOContext *pb = s->pb;
2814     AVStream *st = s->streams[0];
2815     MXFStreamContext *sc = st->priv_data;
2816     const uint8_t *key = NULL;
2817
2818     int err;
2819
2820     if (!mxf->header_written)
2821         key = body_partition_key;
2822
2823     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2824         return err;
2825     mxf_write_klv_fill(s);
2826     avio_write(pb, sc->track_essence_element_key, 16);
2827     klv_encode_ber9_length(pb, mxf->body_offset);
2828     return 0;
2829 }
2830
2831 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2832 {
2833     MXFContext *mxf = s->priv_data;
2834     AVIOContext *pb = s->pb;
2835
2836     int err;
2837
2838     if (!mxf->header_written) {
2839         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2840             return err;
2841         mxf_write_klv_fill(s);
2842
2843         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2844             return err;
2845         mxf->header_written = 1;
2846     }
2847
2848     if (!mxf->edit_unit_byte_count) {
2849         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2850         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2851         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2852     }
2853     mxf->edit_units_count++;
2854     avio_write(pb, pkt->data, pkt->size);
2855     mxf->body_offset += pkt->size;
2856
2857     return 0;
2858 }
2859
2860 static void mxf_compute_edit_unit_byte_count(AVFormatContext *s)
2861 {
2862     MXFContext *mxf = s->priv_data;
2863     int i;
2864
2865     if (s->oformat == &ff_mxf_opatom_muxer) {
2866         MXFStreamContext *sc = s->streams[0]->priv_data;
2867         mxf->edit_unit_byte_count = sc->frame_size;
2868         return;
2869     }
2870
2871     mxf->edit_unit_byte_count = KAG_SIZE; // system element
2872     for (i = 0; i < s->nb_streams; i++) {
2873         AVStream *st = s->streams[i];
2874         MXFStreamContext *sc = st->priv_data;
2875         sc->slice_offset = mxf->edit_unit_byte_count;
2876         mxf->edit_unit_byte_count += 16 + 4 + sc->frame_size;
2877         mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2878     }
2879 }
2880
2881 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2882 {
2883     MXFContext *mxf = s->priv_data;
2884     AVIOContext *pb = s->pb;
2885     AVStream *st = s->streams[pkt->stream_index];
2886     MXFStreamContext *sc = st->priv_data;
2887     MXFIndexEntry ie = {0};
2888     int err;
2889
2890     if (!mxf->header_written && pkt->stream_index != 0 &&
2891         s->oformat != &ff_mxf_opatom_muxer) {
2892         av_log(s, AV_LOG_ERROR, "Received non-video packet before "
2893                                 "header has been written\n");
2894         return AVERROR_INVALIDDATA;
2895     }
2896
2897     if (!mxf->cbr_index && !mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2898         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2899                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2900             mxf->edit_units_count = 0;
2901             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2902             return err;
2903         }
2904     }
2905
2906     if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2907         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2908             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2909             return -1;
2910         }
2911     } else if (st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
2912         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2913             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2914             return -1;
2915         }
2916     } else if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {
2917         if (!mxf_parse_prores_frame(s, st, pkt)) {
2918             av_log(s, AV_LOG_ERROR, "could not get prores profile\n");
2919             return -1;
2920         }
2921     } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
2922         if (!mxf_parse_dv_frame(s, st, pkt)) {
2923             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2924             return -1;
2925         }
2926     } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2927         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2928             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2929             return -1;
2930         }
2931     }
2932
2933     if (mxf->cbr_index) {
2934         if (pkt->size != sc->frame_size && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2935             av_log(s, AV_LOG_ERROR, "track %d: frame size does not match index unit size, %d != %d\n",
2936                    st->index, pkt->size, sc->frame_size);
2937             return -1;
2938         }
2939         if (!mxf->header_written)
2940             mxf_compute_edit_unit_byte_count(s);
2941     }
2942
2943     if (s->oformat == &ff_mxf_opatom_muxer)
2944         return mxf_write_opatom_packet(s, pkt, &ie);
2945
2946     if (!mxf->header_written) {
2947         if (mxf->edit_unit_byte_count) {
2948             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2949                 return err;
2950             mxf_write_klv_fill(s);
2951             mxf_write_index_table_segment(s);
2952         } else {
2953             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2954                 return err;
2955         }
2956         mxf->header_written = 1;
2957     }
2958
2959     if (st->index == 0) {
2960         if (!mxf->edit_unit_byte_count &&
2961             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2962             !(ie.flags & 0x33)) { // I-frame, GOP start
2963             mxf_write_klv_fill(s);
2964             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2965                 return err;
2966             mxf_write_klv_fill(s);
2967             mxf_write_index_table_segment(s);
2968         }
2969
2970         mxf_write_klv_fill(s);
2971         mxf_write_system_item(s);
2972
2973         if (!mxf->edit_unit_byte_count) {
2974             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2975             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2976             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2977             mxf->body_offset += KAG_SIZE; // size of system element
2978         }
2979         mxf->edit_units_count++;
2980     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2981         if (!mxf->edit_units_count) {
2982             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
2983             return AVERROR_PATCHWELCOME;
2984         }
2985         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2986             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2987     }
2988
2989     mxf_write_klv_fill(s);
2990     avio_write(pb, sc->track_essence_element_key, 16); // write key
2991     if (s->oformat == &ff_mxf_d10_muxer &&
2992         st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2993         mxf_write_d10_audio_packet(s, st, pkt);
2994     } else {
2995         klv_encode_ber4_length(pb, pkt->size); // write length
2996         avio_write(pb, pkt->data, pkt->size);
2997         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2998     }
2999
3000     return 0;
3001 }
3002
3003 static void mxf_write_random_index_pack(AVFormatContext *s)
3004 {
3005     MXFContext *mxf = s->priv_data;
3006     AVIOContext *pb = s->pb;
3007     uint64_t pos = avio_tell(pb);
3008     int i;
3009
3010     avio_write(pb, ff_mxf_random_index_pack_key, 16);
3011     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
3012
3013     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
3014         avio_wb32(pb, 1); // BodySID of header partition
3015     else
3016         avio_wb32(pb, 0);
3017     avio_wb64(pb, 0); // offset of header partition
3018
3019     for (i = 0; i < mxf->body_partitions_count; i++) {
3020         avio_wb32(pb, 1); // BodySID
3021         avio_wb64(pb, mxf->body_partition_offset[i]);
3022     }
3023
3024     avio_wb32(pb, 0); // BodySID of footer partition
3025     avio_wb64(pb, mxf->footer_partition_offset);
3026
3027     avio_wb32(pb, avio_tell(pb) - pos + 4);
3028 }
3029
3030 static int mxf_write_footer(AVFormatContext *s)
3031 {
3032     MXFContext *mxf = s->priv_data;
3033     AVIOContext *pb = s->pb;
3034     int i, err;
3035
3036     if (!mxf->header_written ||
3037         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
3038         /* reason could be invalid options/not supported codec/out of memory */
3039         return AVERROR_UNKNOWN;
3040     }
3041
3042     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
3043
3044     mxf_write_klv_fill(s);
3045     mxf->footer_partition_offset = avio_tell(pb);
3046     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
3047         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
3048             return err;
3049     } else {
3050         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
3051             return err;
3052         mxf_write_klv_fill(s);
3053         mxf_write_index_table_segment(s);
3054     }
3055
3056     mxf_write_klv_fill(s);
3057     mxf_write_random_index_pack(s);
3058
3059     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
3060         if (s->oformat == &ff_mxf_opatom_muxer) {
3061             /* rewrite body partition to update lengths */
3062             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
3063             if ((err = mxf_write_opatom_body_partition(s)) < 0)
3064                 return err;
3065         }
3066
3067         avio_seek(pb, 0, SEEK_SET);
3068         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
3069             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
3070                 return err;
3071             mxf_write_klv_fill(s);
3072             mxf_write_index_table_segment(s);
3073         } else {
3074             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
3075                 return err;
3076         }
3077         // update footer partition offset
3078         for (i = 0; i < mxf->body_partitions_count; i++) {
3079             avio_seek(pb, mxf->body_partition_offset[i]+44, SEEK_SET);
3080             avio_wb64(pb, mxf->footer_partition_offset);
3081         }
3082     }
3083
3084     return 0;
3085 }
3086
3087 static void mxf_deinit(AVFormatContext *s)
3088 {
3089     MXFContext *mxf = s->priv_data;
3090
3091     av_freep(&mxf->index_entries);
3092     av_freep(&mxf->body_partition_offset);
3093     if (mxf->timecode_track) {
3094         av_freep(&mxf->timecode_track->priv_data);
3095         av_freep(&mxf->timecode_track);
3096     }
3097 }
3098
3099 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
3100 {
3101     int i, stream_count = 0;
3102
3103     for (i = 0; i < s->nb_streams; i++)
3104         stream_count += !!s->streams[i]->internal->last_in_packet_buffer;
3105
3106     if (stream_count && (s->nb_streams == stream_count || flush)) {
3107         AVPacketList *pktl = s->internal->packet_buffer;
3108         if (s->nb_streams != stream_count) {
3109             AVPacketList *last = NULL;
3110             // find last packet in edit unit
3111             while (pktl) {
3112                 if (!stream_count || pktl->pkt.stream_index == 0)
3113                     break;
3114                 // update last packet in packet buffer
3115                 if (s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer != pktl)
3116                     s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer = pktl;
3117                 last = pktl;
3118                 pktl = pktl->next;
3119                 stream_count--;
3120             }
3121             // purge packet queue
3122             while (pktl) {
3123                 AVPacketList *next = pktl->next;
3124                 av_packet_unref(&pktl->pkt);
3125                 av_freep(&pktl);
3126                 pktl = next;
3127             }
3128             if (last)
3129                 last->next = NULL;
3130             else {
3131                 s->internal->packet_buffer = NULL;
3132                 s->internal->packet_buffer_end= NULL;
3133                 goto out;
3134             }
3135             pktl = s->internal->packet_buffer;
3136         }
3137
3138         *out = pktl->pkt;
3139         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
3140         s->internal->packet_buffer = pktl->next;
3141         if(s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer == pktl)
3142             s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer= NULL;
3143         if(!s->internal->packet_buffer)
3144             s->internal->packet_buffer_end= NULL;
3145         av_freep(&pktl);
3146         return 1;
3147     } else {
3148     out:
3149         return 0;
3150     }
3151 }
3152
3153 static int mxf_compare_timestamps(AVFormatContext *s, const AVPacket *next,
3154                                                       const AVPacket *pkt)
3155 {
3156     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
3157     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
3158
3159     return next->dts > pkt->dts ||
3160         (next->dts == pkt->dts && sc->order < sc2->order);
3161 }
3162
3163 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
3164 {
3165     int ret;
3166     if (pkt) {
3167         MXFStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
3168         pkt->pts = pkt->dts = sc->pkt_cnt++;
3169         if ((ret = ff_interleave_add_packet(s, pkt, mxf_compare_timestamps)) < 0)
3170             return ret;
3171     }
3172     return mxf_interleave_get_packet(s, out, NULL, flush);
3173 }
3174
3175 #define MXF_COMMON_OPTIONS \
3176     { "signal_standard", "Force/set Signal Standard",\
3177       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3178     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
3179       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3180     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
3181       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3182     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
3183       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3184     { "smpte274m", "SMPTE 274M (1125 line)",\
3185       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3186     { "smpte296m", "SMPTE 296M (750 line progressive)",\
3187       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3188     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
3189       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3190     { "smpte428", "SMPTE 428-1 DCDM",\
3191       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
3192
3193
3194
3195 static const AVOption mxf_options[] = {
3196     MXF_COMMON_OPTIONS
3197     { "store_user_comments", "",
3198       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3199     { NULL },
3200 };
3201
3202 static const AVClass mxf_muxer_class = {
3203     .class_name     = "MXF muxer",
3204     .item_name      = av_default_item_name,
3205     .option         = mxf_options,
3206     .version        = LIBAVUTIL_VERSION_INT,
3207 };
3208
3209 static const AVOption d10_options[] = {
3210     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
3211       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
3212     MXF_COMMON_OPTIONS
3213     { "store_user_comments", "",
3214       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3215     { NULL },
3216 };
3217
3218 static const AVClass mxf_d10_muxer_class = {
3219     .class_name     = "MXF-D10 muxer",
3220     .item_name      = av_default_item_name,
3221     .option         = d10_options,
3222     .version        = LIBAVUTIL_VERSION_INT,
3223 };
3224
3225 static const AVOption opatom_options[] = {
3226     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
3227         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
3228     MXF_COMMON_OPTIONS
3229     { "store_user_comments", "",
3230       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3231     { NULL },
3232 };
3233
3234 static const AVClass mxf_opatom_muxer_class = {
3235     .class_name     = "MXF-OPAtom muxer",
3236     .item_name      = av_default_item_name,
3237     .option         = opatom_options,
3238     .version        = LIBAVUTIL_VERSION_INT,
3239 };
3240
3241 AVOutputFormat ff_mxf_muxer = {
3242     .name              = "mxf",
3243     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
3244     .mime_type         = "application/mxf",
3245     .extensions        = "mxf",
3246     .priv_data_size    = sizeof(MXFContext),
3247     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3248     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
3249     .write_header      = mxf_write_header,
3250     .write_packet      = mxf_write_packet,
3251     .write_trailer     = mxf_write_footer,
3252     .deinit            = mxf_deinit,
3253     .flags             = AVFMT_NOTIMESTAMPS,
3254     .interleave_packet = mxf_interleave,
3255     .priv_class        = &mxf_muxer_class,
3256 };
3257
3258 AVOutputFormat ff_mxf_d10_muxer = {
3259     .name              = "mxf_d10",
3260     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
3261     .mime_type         = "application/mxf",
3262     .priv_data_size    = sizeof(MXFContext),
3263     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3264     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
3265     .write_header      = mxf_write_header,
3266     .write_packet      = mxf_write_packet,
3267     .write_trailer     = mxf_write_footer,
3268     .deinit            = mxf_deinit,
3269     .flags             = AVFMT_NOTIMESTAMPS,
3270     .interleave_packet = mxf_interleave,
3271     .priv_class        = &mxf_d10_muxer_class,
3272 };
3273
3274 AVOutputFormat ff_mxf_opatom_muxer = {
3275     .name              = "mxf_opatom",
3276     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
3277     .mime_type         = "application/mxf",
3278     .extensions        = "mxf",
3279     .priv_data_size    = sizeof(MXFContext),
3280     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3281     .video_codec       = AV_CODEC_ID_DNXHD,
3282     .write_header      = mxf_write_header,
3283     .write_packet      = mxf_write_packet,
3284     .write_trailer     = mxf_write_footer,
3285     .deinit            = mxf_deinit,
3286     .flags             = AVFMT_NOTIMESTAMPS,
3287     .interleave_packet = mxf_interleave,
3288     .priv_class        = &mxf_opatom_muxer_class,
3289 };