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 PLATFROM_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     const char *company = "FFmpeg";
 761     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 762     const char *platform = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : PLATFROM_IDENT;
 763     const char *version;
 764     int length;
 765
 766     mxf_write_metadata_key(pb, 0x013000);
 767     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 768
 769     version = s->flags & AVFMT_FLAG_BITEXACT ?
 770         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 771     length = 100 +mxf_utf16_local_tag_length(company) +
 772                   mxf_utf16_local_tag_length(product) +
 773                   mxf_utf16_local_tag_length(platform) +
 774                   mxf_utf16_local_tag_length(version);
 775     klv_encode_ber_length(pb, length);
 776
 777     // write uid
 778     mxf_write_local_tag(s, 16, 0x3C0A);
 779     mxf_write_uuid(pb, Identification, 0);
 780     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 781
 782     // write generation uid
 783     mxf_write_local_tag(s, 16, 0x3C09);
 784     mxf_write_uuid(pb, Identification, 1);
 785     mxf_write_local_tag_utf16(s, 0x3C01, company); // Company Name
 786     mxf_write_local_tag_utf16(s, 0x3C02, product); // Product Name
 787
 788     mxf_write_local_tag(s, 10, 0x3C03); // Product Version
 789     store_version(s);
 790
 791     mxf_write_local_tag_utf16(s, 0x3C04, version); // Version String
 792     mxf_write_local_tag_utf16(s, 0x3C08, platform); // Platform
 793
 794     // write product uid
 795     mxf_write_local_tag(s, 16, 0x3C05);
 796     mxf_write_uuid(pb, Identification, 2);
 797
 798     // modification date
 799     mxf_write_local_tag(s, 8, 0x3C06);
 800     avio_wb64(pb, mxf->timestamp);
 801
 802     mxf_write_local_tag(s, 10, 0x3C07); // Toolkit Version
 803     store_version(s);
 804 }
 805
 806 static void mxf_write_content_storage(AVFormatContext *s, MXFPackage *packages, int package_count)
 807 {
 808     AVIOContext *pb = s->pb;
 809     int i;
 810
 811     mxf_write_metadata_key(pb, 0x011800);
 812     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 813     klv_encode_ber_length(pb, 60 + (16 * package_count));
 814
 815     // write uid
 816     mxf_write_local_tag(s, 16, 0x3C0A);
 817     mxf_write_uuid(pb, ContentStorage, 0);
 818     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 819
 820     // write package reference
 821     mxf_write_local_tag(s, 16 * package_count + 8, 0x1901);
 822     mxf_write_refs_count(pb, package_count);
 823     for (i = 0; i < package_count; i++) {
 824         mxf_write_uuid(pb, packages[i].type, packages[i].instance);
 825     }
 826
 827     // write essence container data
 828     mxf_write_local_tag(s, 8 + 16, 0x1902);
 829     mxf_write_refs_count(pb, 1);
 830     mxf_write_uuid(pb, EssenceContainerData, 0);
 831 }
 832
 833 static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *package)
 834 {
 835     MXFContext *mxf = s->priv_data;
 836     AVIOContext *pb = s->pb;
 837     MXFStreamContext *sc = st->priv_data;
 838
 839     mxf_write_metadata_key(pb, 0x013b00);
 840     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 841     klv_encode_ber_length(pb, 80);
 842
 843     // write track uid
 844     mxf_write_local_tag(s, 16, 0x3C0A);
 845     mxf_write_uuid(pb, Track, mxf->track_instance_count);
 846     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 847
 848     // write track id
 849     mxf_write_local_tag(s, 4, 0x4801);
 850     avio_wb32(pb, st->index+2);
 851
 852     // write track number
 853     mxf_write_local_tag(s, 4, 0x4804);
 854     if (package->type == MaterialPackage)
 855         avio_wb32(pb, 0); // track number of material package is 0
 856     else
 857         avio_write(pb, sc->track_essence_element_key + 12, 4);
 858
 859     // write edit rate
 860     mxf_write_local_tag(s, 8, 0x4B01);
 861
 862     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer) {
 863         avio_wb32(pb, mxf->tc.rate.num);
 864         avio_wb32(pb, mxf->tc.rate.den);
 865     } else {
 866         avio_wb32(pb, mxf->time_base.den);
 867         avio_wb32(pb, mxf->time_base.num);
 868     }
 869
 870     // write origin
 871     mxf_write_local_tag(s, 8, 0x4B02);
 872     avio_wb64(pb, 0);
 873
 874     // write sequence refs
 875     mxf_write_local_tag(s, 16, 0x4803);
 876     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 877 }
 878
 879 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 };
 880
 881 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 882 {
 883     MXFContext *mxf = s->priv_data;
 884     AVIOContext *pb = s->pb;
 885
 886     // find data define uls
 887     mxf_write_local_tag(s, 16, 0x0201);
 888     if (st == mxf->timecode_track)
 889         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 890     else {
 891         const MXFCodecUL *data_def_ul = mxf_get_codec_ul_by_id(ff_mxf_data_definition_uls, st->codecpar->codec_type);
 892         avio_write(pb, data_def_ul->uid, 16);
 893     }
 894
 895     // write duration
 896     mxf_write_local_tag(s, 8, 0x0202);
 897
 898     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
 899         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 900     } else {
 901         avio_wb64(pb, mxf->duration);
 902     }
 903 }
 904
 905 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, MXFPackage *package)
 906 {
 907     MXFContext *mxf = s->priv_data;
 908     AVIOContext *pb = s->pb;
 909     enum MXFMetadataSetType component;
 910
 911     mxf_write_metadata_key(pb, 0x010f00);
 912     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 913     klv_encode_ber_length(pb, 80);
 914
 915     mxf_write_local_tag(s, 16, 0x3C0A);
 916     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 917
 918     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 919     mxf_write_common_fields(s, st);
 920
 921     // write structural component
 922     mxf_write_local_tag(s, 16 + 8, 0x1001);
 923     mxf_write_refs_count(pb, 1);
 924     if (st == mxf->timecode_track)
 925         component = TimecodeComponent;
 926     else
 927         component = SourceClip;
 928
 929     mxf_write_uuid(pb, component, mxf->track_instance_count);
 930 }
 931
 932 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
 933 {
 934     MXFContext *mxf = s->priv_data;
 935     AVIOContext *pb = s->pb;
 936
 937     mxf_write_metadata_key(pb, 0x011400);
 938     klv_encode_ber_length(pb, 75);
 939
 940     // UID
 941     mxf_write_local_tag(s, 16, 0x3C0A);
 942     mxf_write_uuid(pb, TimecodeComponent, mxf->track_instance_count);
 943
 944     mxf_write_common_fields(s, st);
 945
 946     // Start Time Code
 947     mxf_write_local_tag(s, 8, 0x1501);
 948     avio_wb64(pb, mxf->tc.start);
 949
 950     // Rounded Time Code Base
 951     mxf_write_local_tag(s, 2, 0x1502);
 952     avio_wb16(pb, mxf->timecode_base);
 953
 954     // Drop Frame
 955     mxf_write_local_tag(s, 1, 0x1503);
 956     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 957 }
 958
 959 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
 960 {
 961     MXFContext *mxf = s->priv_data;
 962     AVIOContext *pb = s->pb;
 963     int i;
 964
 965     mxf_write_metadata_key(pb, 0x011100);
 966     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 967     klv_encode_ber_length(pb, 108);
 968
 969     // write uid
 970     mxf_write_local_tag(s, 16, 0x3C0A);
 971     mxf_write_uuid(pb, SourceClip, mxf->track_instance_count);
 972
 973     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 974     mxf_write_common_fields(s, st);
 975
 976     // write start_position
 977     mxf_write_local_tag(s, 8, 0x1201);
 978     avio_wb64(pb, 0);
 979
 980     // write source package uid, end of the reference
 981     mxf_write_local_tag(s, 32, 0x1101);
 982     if (!package->ref) {
 983         for (i = 0; i < 4; i++)
 984             avio_wb64(pb, 0);
 985     } else
 986         mxf_write_umid(s, package->ref->instance);
 987
 988     // write source track id
 989     mxf_write_local_tag(s, 4, 0x1102);
 990     if (package->type == SourcePackage && !package->ref)
 991         avio_wb32(pb, 0);
 992     else
 993         avio_wb32(pb, st->index+2);
 994 }
 995
 996 static void mxf_write_tape_descriptor(AVFormatContext *s)
 997 {
 998     AVIOContext *pb = s->pb;
 999
1000     mxf_write_metadata_key(pb, 0x012e00);
1001     PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);
1002     klv_encode_ber_length(pb, 20);
1003     mxf_write_local_tag(s, 16, 0x3C0A);
1004     mxf_write_uuid(pb, TapeDescriptor, 0);
1005     PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);
1006 }
1007
1008
1009 static void mxf_write_multi_descriptor(AVFormatContext *s)
1010 {
1011     MXFContext *mxf = s->priv_data;
1012     AVIOContext *pb = s->pb;
1013     const uint8_t *ul;
1014     int i;
1015
1016     mxf_write_metadata_key(pb, 0x014400);
1017     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
1018     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
1019
1020     mxf_write_local_tag(s, 16, 0x3C0A);
1021     mxf_write_uuid(pb, MultipleDescriptor, 0);
1022     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
1023
1024     // write sample rate
1025     mxf_write_local_tag(s, 8, 0x3001);
1026     avio_wb32(pb, mxf->time_base.den);
1027     avio_wb32(pb, mxf->time_base.num);
1028
1029     // write essence container ul
1030     mxf_write_local_tag(s, 16, 0x3004);
1031     if (mxf->essence_container_count > 1)
1032         ul = multiple_desc_ul;
1033     else {
1034         MXFStreamContext *sc = s->streams[0]->priv_data;
1035         ul = *sc->container_ul;
1036     }
1037     avio_write(pb, ul, 16);
1038
1039     // write sub descriptor refs
1040     mxf_write_local_tag(s, s->nb_streams * 16 + 8, 0x3F01);
1041     mxf_write_refs_count(pb, s->nb_streams);
1042     for (i = 0; i < s->nb_streams; i++)
1043         mxf_write_uuid(pb, SubDescriptor, i);
1044 }
1045
1046 static int64_t mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key)
1047 {
1048     MXFContext *mxf = s->priv_data;
1049     MXFStreamContext *sc = st->priv_data;
1050     AVIOContext *pb = s->pb;
1051     int64_t pos;
1052
1053     avio_write(pb, key, 16);
1054     klv_encode_ber4_length(pb, 0);
1055     pos = avio_tell(pb);
1056
1057     mxf_write_local_tag(s, 16, 0x3C0A);
1058     mxf_write_uuid(pb, SubDescriptor, st->index);
1059
1060     mxf_write_local_tag(s, 4, 0x3006);
1061     avio_wb32(pb, st->index+2);
1062
1063     mxf_write_local_tag(s, 8, 0x3001);
1064     if (s->oformat == &ff_mxf_d10_muxer) {
1065         avio_wb32(pb, mxf->time_base.den);
1066         avio_wb32(pb, mxf->time_base.num);
1067     } else {
1068         if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE ||
1069             st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
1070             avio_wb32(pb, st->codecpar->sample_rate);
1071             avio_wb32(pb, 1);
1072         } else {
1073             avio_wb32(pb, mxf->time_base.den);
1074             avio_wb32(pb, mxf->time_base.num);
1075         }
1076     }
1077
1078     mxf_write_local_tag(s, 16, 0x3004);
1079     avio_write(pb, *sc->container_ul, 16);
1080
1081     return pos;
1082 }
1083
1084 static const UID mxf_s436m_anc_descriptor_key = { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 };
1085 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
1086 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
1087 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
1088 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
1089 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
1090
1091 static const UID mxf_avc_subdescriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6E,0x00 };
1092
1093 static inline uint16_t rescale_mastering_chroma(AVRational q)
1094 {
1095     return av_clip_uint16(av_rescale(q.num, FF_MXF_MASTERING_CHROMA_DEN, q.den));
1096 }
1097
1098 static inline uint32_t rescale_mastering_luma(AVRational q)
1099 {
1100     return av_rescale(q.num, FF_MXF_MASTERING_LUMA_DEN, q.den);
1101 }
1102
1103 static int64_t mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key)
1104 {
1105     MXFStreamContext *sc = st->priv_data;
1106     AVIOContext *pb = s->pb;
1107     int stored_width = 0;
1108     int stored_height = (st->codecpar->height+15)/16*16;
1109     int display_height;
1110     int f1, f2;
1111     const MXFCodecUL *color_primaries_ul;
1112     const MXFCodecUL *color_trc_ul;
1113     const MXFCodecUL *color_space_ul;
1114     int64_t pos = mxf_write_generic_desc(s, st, key);
1115     uint8_t *side_data;
1116
1117     color_primaries_ul = mxf_get_codec_ul_by_id(ff_mxf_color_primaries_uls, st->codecpar->color_primaries);
1118     color_trc_ul       = mxf_get_codec_ul_by_id(ff_mxf_color_trc_uls, st->codecpar->color_trc);
1119     color_space_ul     = mxf_get_codec_ul_by_id(ff_mxf_color_space_uls, st->codecpar->color_space);
1120
1121     if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
1122         if (st->codecpar->height == 1080)
1123             stored_width = 1920;
1124         else if (st->codecpar->height == 720)
1125             stored_width = 1280;
1126     }
1127     if (!stored_width)
1128         stored_width = (st->codecpar->width+15)/16*16;
1129
1130     mxf_write_local_tag(s, 4, 0x3203);
1131     avio_wb32(pb, stored_width);
1132
1133     mxf_write_local_tag(s, 4, 0x3202);
1134     avio_wb32(pb, stored_height>>sc->interlaced);
1135
1136     if (s->oformat == &ff_mxf_d10_muxer) {
1137         //Stored F2 Offset
1138         mxf_write_local_tag(s, 4, 0x3216);
1139         avio_wb32(pb, 0);
1140
1141         //Image Start Offset
1142         mxf_write_local_tag(s, 4, 0x3213);
1143         avio_wb32(pb, 0);
1144
1145         //Image End Offset
1146         mxf_write_local_tag(s, 4, 0x3214);
1147         avio_wb32(pb, 0);
1148     }
1149
1150     //Sampled width
1151     mxf_write_local_tag(s, 4, 0x3205);
1152     avio_wb32(pb, stored_width);
1153
1154     //Samples height
1155     mxf_write_local_tag(s, 4, 0x3204);
1156     avio_wb32(pb, st->codecpar->height>>sc->interlaced);
1157
1158     //Sampled X Offset
1159     mxf_write_local_tag(s, 4, 0x3206);
1160     avio_wb32(pb, 0);
1161
1162     //Sampled Y Offset
1163     mxf_write_local_tag(s, 4, 0x3207);
1164     avio_wb32(pb, 0);
1165
1166     mxf_write_local_tag(s, 4, 0x3209);
1167     avio_wb32(pb, stored_width);
1168
1169     if (st->codecpar->height == 608) // PAL + VBI
1170         display_height = 576;
1171     else if (st->codecpar->height == 512)  // NTSC + VBI
1172         display_height = 486;
1173     else
1174         display_height = st->codecpar->height;
1175
1176     mxf_write_local_tag(s, 4, 0x3208);
1177     avio_wb32(pb, display_height>>sc->interlaced);
1178
1179     // display X offset
1180     mxf_write_local_tag(s, 4, 0x320A);
1181     avio_wb32(pb, 0);
1182
1183     // display Y offset
1184     mxf_write_local_tag(s, 4, 0x320B);
1185     avio_wb32(pb, (st->codecpar->height - display_height)>>sc->interlaced);
1186
1187     if (sc->interlaced) {
1188         //Display F2 Offset
1189         mxf_write_local_tag(s, 4, 0x3217);
1190         avio_wb32(pb, -((st->codecpar->height - display_height)&1));
1191     }
1192
1193     // component depth
1194     mxf_write_local_tag(s, 4, 0x3301);
1195     avio_wb32(pb, sc->component_depth);
1196
1197     // horizontal subsampling
1198     mxf_write_local_tag(s, 4, 0x3302);
1199     avio_wb32(pb, sc->h_chroma_sub_sample);
1200
1201     // vertical subsampling
1202     mxf_write_local_tag(s, 4, 0x3308);
1203     avio_wb32(pb, sc->v_chroma_sub_sample);
1204
1205     // color siting
1206     mxf_write_local_tag(s, 1, 0x3303);
1207     avio_w8(pb, sc->color_siting);
1208
1209     // Padding Bits
1210     mxf_write_local_tag(s, 2, 0x3307);
1211     avio_wb16(pb, 0);
1212
1213     if (st->codecpar->color_range != AVCOL_RANGE_UNSPECIFIED) {
1214         int black = 0,
1215             white = (1<<sc->component_depth) - 1,
1216             color = (1<<sc->component_depth);
1217         if (st->codecpar->color_range == AVCOL_RANGE_MPEG) {
1218             black = 1   << (sc->component_depth - 4);
1219             white = 235 << (sc->component_depth - 8);
1220             color = (14 << (sc->component_depth - 4)) + 1;
1221         }
1222         mxf_write_local_tag(s, 4, 0x3304);
1223         avio_wb32(pb, black);
1224         mxf_write_local_tag(s, 4, 0x3305);
1225         avio_wb32(pb, white);
1226         mxf_write_local_tag(s, 4, 0x3306);
1227         avio_wb32(pb, color);
1228     }
1229
1230     if (sc->signal_standard) {
1231         mxf_write_local_tag(s, 1, 0x3215);
1232         avio_w8(pb, sc->signal_standard);
1233     }
1234
1235     // frame layout
1236     mxf_write_local_tag(s, 1, 0x320C);
1237     avio_w8(pb, sc->interlaced);
1238
1239     // video line map
1240     switch (st->codecpar->height) {
1241     case  576: f1 = 23; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1242     case  608: f1 =  7; f2 = 320; break;
1243     case  480: f1 = 20; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1244     case  512: f1 =  7; f2 = 270; break;
1245     case  720: f1 = 26; f2 =   0; break; // progressive
1246     case 1080: f1 = 21; f2 = 584; break;
1247     default:   f1 =  0; f2 =   0; break;
1248     }
1249
1250     if (!sc->interlaced && f2) {
1251         f2  = 0;
1252         f1 *= 2;
1253     }
1254
1255
1256     mxf_write_local_tag(s, 16, 0x320D);
1257     avio_wb32(pb, 2);
1258     avio_wb32(pb, 4);
1259     avio_wb32(pb, f1);
1260     avio_wb32(pb, f2);
1261
1262     mxf_write_local_tag(s, 8, 0x320E);
1263     avio_wb32(pb, sc->aspect_ratio.num);
1264     avio_wb32(pb, sc->aspect_ratio.den);
1265
1266     if (color_primaries_ul->uid[0]) {
1267         mxf_write_local_tag(s, 16, 0x3219);
1268         avio_write(pb, color_primaries_ul->uid, 16);
1269     };
1270
1271     if (color_trc_ul->uid[0]) {
1272         mxf_write_local_tag(s, 16, 0x3210);
1273         avio_write(pb, color_trc_ul->uid, 16);
1274     };
1275
1276     if (color_space_ul->uid[0]) {
1277         mxf_write_local_tag(s, 16, 0x321A);
1278         avio_write(pb, color_space_ul->uid, 16);
1279     };
1280
1281     mxf_write_local_tag(s, 16, 0x3201);
1282     avio_write(pb, *sc->codec_ul, 16);
1283
1284     // Mastering Display metadata
1285     side_data = av_stream_get_side_data(st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, NULL);
1286     if (side_data) {
1287         const AVMasteringDisplayMetadata *metadata = (const AVMasteringDisplayMetadata*)side_data;
1288         if (metadata->has_primaries) {
1289             mxf_write_local_tag(s, 12, 0x8301);
1290             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[0][0]));
1291             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[0][1]));
1292             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[1][0]));
1293             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[1][1]));
1294             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[2][0]));
1295             avio_wb16(pb, rescale_mastering_chroma(metadata->display_primaries[2][1]));
1296             mxf_write_local_tag(s, 4, 0x8302);
1297             avio_wb16(pb, rescale_mastering_chroma(metadata->white_point[0]));
1298             avio_wb16(pb, rescale_mastering_chroma(metadata->white_point[1]));
1299         } else {
1300             av_log(NULL, AV_LOG_VERBOSE, "Not writing mastering display primaries. Missing data.\n");
1301         }
1302         if (metadata->has_luminance) {
1303             mxf_write_local_tag(s, 4, 0x8303);
1304             avio_wb32(pb, rescale_mastering_luma(metadata->max_luminance));
1305             mxf_write_local_tag(s, 4, 0x8304);
1306             avio_wb32(pb, rescale_mastering_luma(metadata->min_luminance));
1307         } else {
1308             av_log(NULL, AV_LOG_VERBOSE, "Not writing mastering display luminances. Missing data.\n");
1309         }
1310     }
1311
1312     if (sc->interlaced && sc->field_dominance) {
1313         mxf_write_local_tag(s, 1, 0x3212);
1314         avio_w8(pb, sc->field_dominance);
1315     }
1316
1317     if (st->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {
1318         // write avc sub descriptor ref
1319         mxf_write_local_tag(s, 8 + 16, 0x8100);
1320         mxf_write_refs_count(pb, 1);
1321         mxf_write_uuid(pb, AVCSubDescriptor, 0);
1322     }
1323
1324     return pos;
1325 }
1326
1327 static void mxf_update_klv_size(AVIOContext *pb, int64_t pos)
1328 {
1329     int64_t cur_pos = avio_tell(pb);
1330     int size = cur_pos - pos;
1331     avio_seek(pb, pos - 4, SEEK_SET);
1332     klv_encode_ber4_length(pb, size);
1333     avio_seek(pb, cur_pos, SEEK_SET);
1334 }
1335
1336 static void mxf_write_avc_subdesc(AVFormatContext *s, AVStream *st)
1337 {
1338     AVIOContext *pb = s->pb;
1339     int64_t pos;
1340
1341     avio_write(pb, mxf_avc_subdescriptor_key, 16);
1342     klv_encode_ber4_length(pb, 0);
1343     pos = avio_tell(pb);
1344
1345     mxf_write_local_tag(s, 16, 0x3C0A);
1346     mxf_write_uuid(pb, AVCSubDescriptor, 0);
1347
1348     mxf_write_local_tag(s, 1, 0x8200);
1349     avio_w8(pb, 0xFF); // AVC Decoding Delay, unknown
1350
1351     mxf_write_local_tag(s, 1, 0x8201);
1352     avio_w8(pb, st->codecpar->profile); // AVC Profile
1353
1354     mxf_write_local_tag(s, 1, 0x8202);
1355     avio_w8(pb, st->codecpar->level); // AVC Level
1356
1357     mxf_update_klv_size(s->pb, pos);
1358 }
1359
1360 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1361 {
1362     int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);
1363     mxf_update_klv_size(s->pb, pos);
1364
1365     if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1366         mxf_write_avc_subdesc(s, st);
1367     }
1368 }
1369
1370 static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st)
1371 {
1372     MXFStreamContext *sc = st->priv_data;
1373     if (sc->avc_intra) {
1374         mxf_write_mpegvideo_desc(s, st);
1375     } else {
1376         int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);
1377         mxf_update_klv_size(s->pb, pos);
1378         mxf_write_avc_subdesc(s, st);
1379     }
1380 }
1381
1382 static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st)
1383 {
1384     int64_t pos = mxf_write_generic_desc(s, st, mxf_s436m_anc_descriptor_key);
1385     mxf_update_klv_size(s->pb, pos);
1386 }
1387
1388 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1389 {
1390     AVIOContext *pb = s->pb;
1391     MXFStreamContext *sc = st->priv_data;
1392     int profile_and_level = (st->codecpar->profile<<4) | st->codecpar->level;
1393     int64_t pos = mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key);
1394
1395     if (st->codecpar->codec_id != AV_CODEC_ID_H264) {
1396         // bit rate
1397         mxf_write_local_tag(s, 4, 0x8000);
1398         avio_wb32(pb, sc->video_bit_rate);
1399
1400         // profile and level
1401         mxf_write_local_tag(s, 1, 0x8007);
1402         if (!st->codecpar->profile)
1403             profile_and_level |= 0x80; // escape bit
1404         avio_w8(pb, profile_and_level);
1405
1406         // low delay
1407         mxf_write_local_tag(s, 1, 0x8003);
1408         avio_w8(pb, sc->low_delay);
1409
1410         // closed gop
1411         mxf_write_local_tag(s, 1, 0x8004);
1412         avio_w8(pb, sc->seq_closed_gop);
1413
1414         // max gop
1415         mxf_write_local_tag(s, 2, 0x8006);
1416         avio_wb16(pb, sc->max_gop);
1417
1418         // b picture count
1419         mxf_write_local_tag(s, 2, 0x8008);
1420         avio_wb16(pb, sc->b_picture_count);
1421     }
1422
1423     mxf_update_klv_size(pb, pos);
1424 }
1425
1426 static int64_t mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key)
1427 {
1428     AVIOContext *pb = s->pb;
1429     MXFContext *mxf = s->priv_data;
1430     int show_warnings = !mxf->footer_partition_offset;
1431     int64_t pos = mxf_write_generic_desc(s, st, key);
1432
1433     if (s->oformat == &ff_mxf_opatom_muxer) {
1434         mxf_write_local_tag(s, 8, 0x3002);
1435         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1436     }
1437
1438     // audio locked
1439     mxf_write_local_tag(s, 1, 0x3D02);
1440     avio_w8(pb, 1);
1441
1442     // write audio sampling rate
1443     mxf_write_local_tag(s, 8, 0x3D03);
1444     avio_wb32(pb, st->codecpar->sample_rate);
1445     avio_wb32(pb, 1);
1446
1447     if (s->oformat == &ff_mxf_d10_muxer) {
1448         mxf_write_local_tag(s, 1, 0x3D04);
1449         avio_w8(pb, 0);
1450     }
1451
1452     mxf_write_local_tag(s, 4, 0x3D07);
1453     if (mxf->channel_count == -1) {
1454         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codecpar->channels != 4) && (st->codecpar->channels != 8))
1455             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");
1456         avio_wb32(pb, st->codecpar->channels);
1457     } else if (s->oformat == &ff_mxf_d10_muxer) {
1458         if (show_warnings && (mxf->channel_count < st->codecpar->channels))
1459             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1460         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1461             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");
1462         avio_wb32(pb, mxf->channel_count);
1463     } else {
1464         avio_wb32(pb, st->codecpar->channels);
1465     }
1466
1467     mxf_write_local_tag(s, 4, 0x3D01);
1468     avio_wb32(pb, av_get_bits_per_sample(st->codecpar->codec_id));
1469
1470     return pos;
1471 }
1472
1473 static int64_t mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key)
1474 {
1475     AVIOContext *pb = s->pb;
1476     int64_t pos = mxf_write_generic_sound_common(s, st, key);
1477
1478     mxf_write_local_tag(s, 2, 0x3D0A);
1479     avio_wb16(pb, st->codecpar->block_align);
1480
1481     // avg bytes per sec
1482     mxf_write_local_tag(s, 4, 0x3D09);
1483     avio_wb32(pb, st->codecpar->block_align*st->codecpar->sample_rate);
1484
1485     return pos;
1486 }
1487
1488 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1489 {
1490     int64_t pos = mxf_write_wav_common(s, st, mxf_wav_descriptor_key);
1491     mxf_update_klv_size(s->pb, pos);
1492 }
1493
1494 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1495 {
1496     int64_t pos = mxf_write_wav_common(s, st, mxf_aes3_descriptor_key);
1497     mxf_update_klv_size(s->pb, pos);
1498 }
1499
1500 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1501 {
1502     int64_t pos = mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key);
1503     mxf_update_klv_size(s->pb, pos);
1504 }
1505
1506 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 };
1507
1508 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1509 {
1510     MXFContext *mxf = s->priv_data;
1511     AVIOContext *pb = s->pb;
1512     int name_size = mxf_utf16_local_tag_length(name);
1513     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1514
1515     if (!name_size || indirect_value_size == 13)
1516         return 1;
1517
1518     mxf_write_metadata_key(pb, 0x013f00);
1519     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1520
1521     // write instance UID
1522     mxf_write_local_tag(s, 16, 0x3C0A);
1523     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1524
1525     // write name
1526     mxf_write_local_tag_utf16(s, 0x5001, name); // Name
1527
1528     // write indirect value
1529     mxf_write_local_tag(s, indirect_value_size, 0x5003);
1530     avio_write(pb, mxf_indirect_value_utf16le, 17);
1531     avio_put_str16le(pb, value);
1532
1533     mxf->tagged_value_count++;
1534     return 0;
1535 }
1536
1537 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1538 {
1539     MXFContext *mxf = s->priv_data;
1540     AVDictionaryEntry *t = NULL;
1541     int count = 0;
1542
1543     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1544         if (mxf->tagged_value_count >= UINT16_MAX) {
1545             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1546             return count;
1547         }
1548
1549         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1550             count++;
1551     }
1552     return count;
1553 }
1554
1555 static void mxf_write_package(AVFormatContext *s, MXFPackage *package)
1556 {
1557     MXFContext *mxf = s->priv_data;
1558     AVIOContext *pb = s->pb;
1559     int i, track_count = s->nb_streams+1;
1560     int name_size = mxf_utf16_local_tag_length(package->name);
1561     int user_comment_count = 0;
1562
1563     if (package->type == MaterialPackage) {
1564         if (mxf->store_user_comments)
1565             user_comment_count = mxf_write_user_comments(s, s->metadata);
1566         mxf_write_metadata_key(pb, 0x013600);
1567         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1568         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);
1569     } else {
1570         mxf_write_metadata_key(pb, 0x013700);
1571         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1572         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference
1573     }
1574
1575     // write uid
1576     mxf_write_local_tag(s, 16, 0x3C0A);
1577     mxf_write_uuid(pb, package->type, package->instance);
1578     av_log(s, AV_LOG_DEBUG, "package type:%d\n", package->type);
1579     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1580
1581     // write package umid
1582     mxf_write_local_tag(s, 32, 0x4401);
1583     mxf_write_umid(s, package->instance);
1584     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1585
1586     // package name
1587     if (name_size)
1588         mxf_write_local_tag_utf16(s, 0x4402, package->name);
1589
1590     // package creation date
1591     mxf_write_local_tag(s, 8, 0x4405);
1592     avio_wb64(pb, mxf->timestamp);
1593
1594     // package modified date
1595     mxf_write_local_tag(s, 8, 0x4404);
1596     avio_wb64(pb, mxf->timestamp);
1597
1598     // write track refs
1599     mxf_write_local_tag(s, track_count*16 + 8, 0x4403);
1600     mxf_write_refs_count(pb, track_count);
1601     // these are the uuids of the tracks the will be written in mxf_write_track
1602     for (i = 0; i < track_count; i++)
1603         mxf_write_uuid(pb, Track,  mxf->track_instance_count + i);
1604
1605     // write user comment refs
1606     if (mxf->store_user_comments) {
1607         mxf_write_local_tag(s, user_comment_count*16 + 8, 0x4406);
1608         mxf_write_refs_count(pb, user_comment_count);
1609         for (i = 0; i < user_comment_count; i++)
1610             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1611     }
1612
1613     // write multiple descriptor reference
1614     if (package->type == SourcePackage && package->instance == 1) {
1615         mxf_write_local_tag(s, 16, 0x4701);
1616         if (s->nb_streams > 1) {
1617             mxf_write_uuid(pb, MultipleDescriptor, 0);
1618             mxf_write_multi_descriptor(s);
1619         } else
1620             mxf_write_uuid(pb, SubDescriptor, 0);
1621     } else if (package->type == SourcePackage && package->instance == 2) {
1622         mxf_write_local_tag(s, 16, 0x4701);
1623         mxf_write_uuid(pb, TapeDescriptor, 0);
1624         mxf_write_tape_descriptor(s);
1625     }
1626
1627     /*
1628      * for every 1 track in a package there is 1 sequence and 1 component.
1629      * all 3 of these elements share the same instance number for generating
1630      * there instance uuids. mxf->track_instance_count stores this value.
1631      * mxf->track_instance_count is incremented after a group of all 3 of
1632      * these elements are written.
1633      */
1634
1635     // write timecode track
1636     mxf_write_track(s, mxf->timecode_track, package);
1637     mxf_write_sequence(s, mxf->timecode_track, package);
1638     mxf_write_timecode_component(s, mxf->timecode_track, package);
1639     mxf->track_instance_count++;
1640
1641     for (i = 0; i < s->nb_streams; i++) {
1642         AVStream *st = s->streams[i];
1643         mxf_write_track(s, st, package);
1644         mxf_write_sequence(s, st, package);
1645         mxf_write_structural_component(s, st, package);
1646         mxf->track_instance_count++;
1647
1648         if (package->type == SourcePackage && package->instance == 1) {
1649             MXFStreamContext *sc = st->priv_data;
1650             mxf_essence_container_uls[sc->index].write_desc(s, st);
1651         }
1652     }
1653 }
1654
1655 static int mxf_write_essence_container_data(AVFormatContext *s)
1656 {
1657     AVIOContext *pb = s->pb;
1658
1659     mxf_write_metadata_key(pb, 0x012300);
1660     klv_encode_ber_length(pb, 72);
1661
1662     mxf_write_local_tag(s, 16, 0x3C0A); // Instance UID
1663     mxf_write_uuid(pb, EssenceContainerData, 0);
1664
1665     mxf_write_local_tag(s, 32, 0x2701); // Linked Package UID
1666     mxf_write_umid(s, 1);
1667
1668     mxf_write_local_tag(s, 4, 0x3F07); // BodySID
1669     avio_wb32(pb, 1);
1670
1671     mxf_write_local_tag(s, 4, 0x3F06); // IndexSID
1672     avio_wb32(pb, 2);
1673
1674     return 0;
1675 }
1676
1677 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1678 {
1679     MXFContext *mxf = s->priv_data;
1680     AVDictionaryEntry *entry = NULL;
1681     AVStream *st = NULL;
1682     int i;
1683     MXFPackage packages[3] = {{0}};
1684     int package_count = 2;
1685     packages[0].type = MaterialPackage;
1686     packages[1].type = SourcePackage;
1687     packages[1].instance = 1;
1688     packages[0].ref = &packages[1];
1689
1690
1691     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1692        packages[0].name = entry->value;
1693
1694     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1695         packages[1].name = entry->value;
1696     } else {
1697         /* check if any of the streams contain a file_package_name */
1698         for (i = 0; i < s->nb_streams; i++) {
1699             st = s->streams[i];
1700             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1701                 packages[1].name = entry->value;
1702                 break;
1703             }
1704         }
1705     }
1706
1707     entry = av_dict_get(s->metadata, "reel_name", NULL, 0);
1708     if (entry) {
1709         packages[2].name = entry->value;
1710         packages[2].type = SourcePackage;
1711         packages[2].instance = 2;
1712         packages[1].ref = &packages[2];
1713         package_count = 3;
1714     }
1715
1716     mxf_write_preface(s);
1717     mxf_write_identification(s);
1718     mxf_write_content_storage(s, packages, package_count);
1719     mxf->track_instance_count = 0;
1720     for (i = 0; i < package_count; i++)
1721         mxf_write_package(s, &packages[i]);
1722     mxf_write_essence_container_data(s);
1723     return 0;
1724 }
1725
1726 static unsigned klv_fill_size(uint64_t size)
1727 {
1728     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1729     if (pad < 20) // smallest fill item possible
1730         return pad + KAG_SIZE;
1731     else
1732         return pad & (KAG_SIZE-1);
1733 }
1734
1735 static void mxf_write_index_table_segment(AVFormatContext *s)
1736 {
1737     MXFContext *mxf = s->priv_data;
1738     AVIOContext *pb = s->pb;
1739     int i, j, temporal_reordering = 0;
1740     int key_index = mxf->last_key_index;
1741     int prev_non_b_picture = 0;
1742     int audio_frame_size = 0;
1743     int64_t pos;
1744
1745     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1746
1747     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1748         return;
1749
1750     avio_write(pb, index_table_segment_key, 16);
1751
1752     klv_encode_ber4_length(pb, 0);
1753     pos = avio_tell(pb);
1754
1755     // instance id
1756     mxf_write_local_tag(s, 16, 0x3C0A);
1757     mxf_write_uuid(pb, IndexTableSegment, 0);
1758
1759     // index edit rate
1760     mxf_write_local_tag(s, 8, 0x3F0B);
1761     avio_wb32(pb, mxf->time_base.den);
1762     avio_wb32(pb, mxf->time_base.num);
1763
1764     // index start position
1765     mxf_write_local_tag(s, 8, 0x3F0C);
1766     avio_wb64(pb, mxf->last_indexed_edit_unit);
1767
1768     // index duration
1769     mxf_write_local_tag(s, 8, 0x3F0D);
1770     if (mxf->edit_unit_byte_count)
1771         avio_wb64(pb, 0); // index table covers whole container
1772     else
1773         avio_wb64(pb, mxf->edit_units_count);
1774
1775     // edit unit byte count
1776     mxf_write_local_tag(s, 4, 0x3F05);
1777     avio_wb32(pb, mxf->edit_unit_byte_count);
1778
1779     // index sid
1780     mxf_write_local_tag(s, 4, 0x3F06);
1781     avio_wb32(pb, 2);
1782
1783     // body sid
1784     mxf_write_local_tag(s, 4, 0x3F07);
1785     avio_wb32(pb, 1);
1786
1787     // real slice count - 1
1788     mxf_write_local_tag(s, 1, 0x3F08);
1789     avio_w8(pb, !mxf->edit_unit_byte_count); // only one slice for CBR
1790
1791     // delta entry array
1792     mxf_write_local_tag(s, 8 + (s->nb_streams+1)*6, 0x3F09);
1793     avio_wb32(pb, s->nb_streams+1); // num of entries
1794     avio_wb32(pb, 6);               // size of one entry
1795     // write system item delta entry
1796     avio_w8(pb, 0);
1797     avio_w8(pb, 0); // slice entry
1798     avio_wb32(pb, 0); // element delta
1799     // write each stream delta entry
1800     for (i = 0; i < s->nb_streams; i++) {
1801         AVStream *st = s->streams[i];
1802         MXFStreamContext *sc = st->priv_data;
1803         avio_w8(pb, sc->temporal_reordering);
1804         if (sc->temporal_reordering)
1805             temporal_reordering = 1;
1806         if (mxf->edit_unit_byte_count) {
1807             avio_w8(pb, 0); // slice number
1808             avio_wb32(pb, sc->slice_offset);
1809         } else if (i == 0) { // video track
1810             avio_w8(pb, 0); // slice number
1811             avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1812         } else { // audio or data track
1813             if (!audio_frame_size) {
1814                 audio_frame_size = sc->frame_size;
1815                 audio_frame_size += klv_fill_size(audio_frame_size);
1816             }
1817             avio_w8(pb, 1);
1818             avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1819         }
1820     }
1821
1822     if (!mxf->edit_unit_byte_count) {
1823         MXFStreamContext *sc = s->streams[0]->priv_data;
1824         mxf_write_local_tag(s, 8 + mxf->edit_units_count*15, 0x3F0A);
1825         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1826         avio_wb32(pb, 15);  // size of one entry
1827
1828         for (i = 0; i < mxf->edit_units_count; i++) {
1829             int temporal_offset = 0;
1830
1831             if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame
1832                 sc->max_gop = FFMAX(sc->max_gop, i - mxf->last_key_index);
1833                 mxf->last_key_index = key_index;
1834                 key_index = i;
1835             }
1836
1837             if (temporal_reordering) {
1838                 int pic_num_in_gop = i - key_index;
1839                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1840                     for (j = key_index; j < mxf->edit_units_count; j++) {
1841                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1842                             break;
1843                     }
1844                     if (j == mxf->edit_units_count)
1845                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1846                     temporal_offset = j - key_index - pic_num_in_gop;
1847                 }
1848             }
1849             avio_w8(pb, temporal_offset);
1850
1851             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1852                 sc->b_picture_count = FFMAX(sc->b_picture_count, i - prev_non_b_picture);
1853                 avio_w8(pb, mxf->last_key_index - i);
1854             } else {
1855                 avio_w8(pb, key_index - i); // key frame offset
1856                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1857                     mxf->last_key_index = key_index;
1858                 prev_non_b_picture = i;
1859             }
1860
1861             if (!(mxf->index_entries[i].flags & 0x33) && // I-frame
1862                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1863                 mxf->index_entries[i].flags |= 0x80; // random access
1864             avio_w8(pb, mxf->index_entries[i].flags);
1865             // stream offset
1866             avio_wb64(pb, mxf->index_entries[i].offset);
1867             if (s->nb_streams > 1)
1868                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1869             else
1870                 avio_wb32(pb, 0);
1871         }
1872
1873         mxf->last_key_index = key_index - mxf->edit_units_count;
1874         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1875         mxf->edit_units_count = 0;
1876     }
1877
1878     mxf_update_klv_size(pb, pos);
1879 }
1880
1881 static void mxf_write_klv_fill(AVFormatContext *s)
1882 {
1883     unsigned pad = klv_fill_size(avio_tell(s->pb));
1884     if (pad) {
1885         avio_write(s->pb, klv_fill_key, 16);
1886         pad -= 16 + 4;
1887         klv_encode_ber4_length(s->pb, pad);
1888         ffio_fill(s->pb, 0, pad);
1889         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1890     }
1891 }
1892
1893 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1894                                 int indexsid,
1895                                 const uint8_t *key, int write_metadata)
1896 {
1897     MXFContext *mxf = s->priv_data;
1898     AVIOContext *pb = s->pb;
1899     int64_t header_byte_count_offset;
1900     unsigned index_byte_count = 0;
1901     uint64_t partition_offset = avio_tell(pb);
1902     int err;
1903
1904     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1905         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1906             12+mxf->edit_units_count*15;
1907     else if (mxf->edit_unit_byte_count && indexsid)
1908         index_byte_count = 80;
1909
1910     if (index_byte_count) {
1911         index_byte_count += 16 + 4; // add encoded ber4 length
1912         index_byte_count += klv_fill_size(index_byte_count);
1913     }
1914
1915     if (key && !memcmp(key, body_partition_key, 16)) {
1916         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1917                                      sizeof(*mxf->body_partition_offset))) < 0) {
1918             mxf->body_partitions_count = 0;
1919             return err;
1920         }
1921         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1922     }
1923
1924     // write klv
1925     if (key)
1926         avio_write(pb, key, 16);
1927     else
1928         avio_write(pb, body_partition_key, 16);
1929
1930     klv_encode_ber4_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1931
1932     // write partition value
1933     avio_wb16(pb, 1); // majorVersion
1934     avio_wb16(pb, 3); // minorVersion
1935     avio_wb32(pb, KAG_SIZE); // KAGSize
1936
1937     avio_wb64(pb, partition_offset); // ThisPartition
1938
1939     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1940         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1941     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1942         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1943     else
1944         avio_wb64(pb, 0);
1945
1946     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1947
1948     // set offset
1949     header_byte_count_offset = avio_tell(pb);
1950     avio_wb64(pb, 0); // headerByteCount, update later
1951
1952     // indexTable
1953     avio_wb64(pb, index_byte_count); // indexByteCount
1954     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1955
1956     // BodyOffset
1957     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1958         avio_wb64(pb, mxf->body_offset);
1959     else
1960         avio_wb64(pb, 0);
1961
1962     avio_wb32(pb, bodysid); // bodySID
1963
1964     // operational pattern
1965     if (s->oformat == &ff_mxf_opatom_muxer)
1966         avio_write(pb, opatom_ul, 16);
1967     else
1968         avio_write(pb, op1a_ul, 16);
1969
1970     // essence container
1971     mxf_write_essence_container_refs(s);
1972
1973     if (write_metadata) {
1974         // mark the start of the headermetadata and calculate metadata size
1975         int64_t pos, start;
1976         unsigned header_byte_count;
1977
1978         mxf_write_klv_fill(s);
1979         start = avio_tell(s->pb);
1980         mxf_write_primer_pack(s);
1981         mxf_write_klv_fill(s);
1982         mxf_write_header_metadata_sets(s);
1983         pos = avio_tell(s->pb);
1984         header_byte_count = pos - start + klv_fill_size(pos);
1985
1986         // update header_byte_count
1987         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1988         avio_wb64(pb, header_byte_count);
1989         avio_seek(pb, pos, SEEK_SET);
1990     }
1991
1992     if(key)
1993         avio_write_marker(pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
1994
1995     return 0;
1996 }
1997
1998 static const struct {
1999     int profile;
2000     UID codec_ul;
2001 } mxf_prores_codec_uls[] = {
2002     { FF_PROFILE_PRORES_PROXY,    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x01,0x00 } },
2003     { FF_PROFILE_PRORES_LT,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x02,0x00 } },
2004     { FF_PROFILE_PRORES_STANDARD, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 } },
2005     { FF_PROFILE_PRORES_HQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x04,0x00 } },
2006     { FF_PROFILE_PRORES_4444,     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x05,0x00 } },
2007     { FF_PROFILE_PRORES_XQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x06,0x00 } },
2008 };
2009
2010 static int mxf_parse_prores_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2011 {
2012     MXFContext *mxf = s->priv_data;
2013     MXFStreamContext *sc = st->priv_data;
2014     int i, profile;
2015
2016     if (mxf->header_written)
2017         return 1;
2018
2019     sc->codec_ul = NULL;
2020     profile = st->codecpar->profile;
2021     for (i = 0; i < FF_ARRAY_ELEMS(mxf_prores_codec_uls); i++) {
2022         if (profile == mxf_prores_codec_uls[i].profile) {
2023             sc->codec_ul = &mxf_prores_codec_uls[i].codec_ul;
2024             break;
2025         }
2026     }
2027     if (!sc->codec_ul)
2028         return 0;
2029
2030     sc->frame_size = pkt->size;
2031
2032     return 1;
2033 }
2034
2035 static const struct {
2036     int cid;
2037     UID codec_ul;
2038 } mxf_dnxhd_codec_uls[] = {
2039     { 1235, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 } }, // 1080p 10bit HIGH
2040     { 1237, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 } }, // 1080p 8bit MED
2041     { 1238, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 } }, // 1080p 8bit HIGH
2042     { 1241, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 } }, // 1080i 10bit HIGH
2043     { 1242, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 } }, // 1080i 8bit MED
2044     { 1243, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 } }, // 1080i 8bit HIGH
2045     { 1244, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x0a,0x00,0x00 } }, // 1080i 8bit TR
2046     { 1250, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 } }, // 720p 10bit
2047     { 1251, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 } }, // 720p 8bit HIGH
2048     { 1252, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 } }, // 720p 8bit MED
2049     { 1253, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 } }, // 720p 8bit LOW
2050     { 1256, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x16,0x00,0x00 } }, // 1080p 10bit 444
2051     { 1258, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x18,0x00,0x00 } }, // 720p 8bit TR
2052     { 1259, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x19,0x00,0x00 } }, // 1080p 8bit TR
2053     { 1260, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x1a,0x00,0x00 } }, // 1080i 8bit TR MBAFF
2054     { 1270, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x24,0x00,0x00 } }, // DNXHR 444
2055     { 1271, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x25,0x00,0x00 } }, // DNXHR HQX
2056     { 1272, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x26,0x00,0x00 } }, // DNXHR HQ
2057     { 1273, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x27,0x00,0x00 } }, // DNXHR SQ
2058     { 1274, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x28,0x00,0x00 } }, // DNXHR LB
2059 };
2060
2061 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2062 {
2063     MXFContext *mxf = s->priv_data;
2064     MXFStreamContext *sc = st->priv_data;
2065     int i, cid, frame_size = 0;
2066
2067     if (mxf->header_written)
2068         return 1;
2069
2070     if (pkt->size < 43)
2071         return 0;
2072
2073     sc->codec_ul = NULL;
2074     cid = AV_RB32(pkt->data + 0x28);
2075     for (i = 0; i < FF_ARRAY_ELEMS(mxf_dnxhd_codec_uls); i++) {
2076         if (cid == mxf_dnxhd_codec_uls[i].cid) {
2077             sc->codec_ul = &mxf_dnxhd_codec_uls[i].codec_ul;
2078             break;
2079         }
2080     }
2081     if (!sc->codec_ul)
2082         return 0;
2083
2084     sc->component_depth = 0;
2085     switch (pkt->data[0x21] >> 5) {
2086     case 1: sc->component_depth = 8; break;
2087     case 2: sc->component_depth = 10; break;
2088     case 3: sc->component_depth = 12; break;
2089     }
2090     if (!sc->component_depth)
2091         return 0;
2092
2093     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) == DNXHD_VARIABLE) {
2094         frame_size = avpriv_dnxhd_get_hr_frame_size(cid, st->codecpar->width, st->codecpar->height);
2095     }
2096     if (frame_size < 0)
2097         return 0;
2098
2099     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
2100         return 0;
2101
2102     if (cid >= 1270) { // RI raster
2103         av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2104                   st->codecpar->width, st->codecpar->height,
2105                   INT_MAX);
2106     } else {
2107         sc->aspect_ratio = (AVRational){ 16, 9 };
2108     }
2109
2110     sc->frame_size = pkt->size;
2111
2112     return 1;
2113 }
2114
2115 static const struct {
2116     const UID container_ul;
2117     const UID codec_ul;
2118 } mxf_dv_uls[] = {
2119     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x01,0x01 }, // IEC DV25 525/60
2120       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x01,0x00 } },
2121     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x02,0x01 }, // IEC DV25 626/50
2122       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 } },
2123     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 }, // DV25 525/60
2124       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 }, },
2125     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, // DV25 625/50
2126       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, },
2127     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 }, // DV50 525/60
2128       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 }, },
2129     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 }, // DV50 625/50
2130       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, },
2131     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 }, // DV100 1080/60
2132       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 }, },
2133     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 }, // DV100 1080/50
2134       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 }, },
2135     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 }, // DV100 720/60
2136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 }, },
2137     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 }, // DV100 720/50
2138       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 }, },
2139 };
2140
2141 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2142 {
2143     MXFContext *mxf = s->priv_data;
2144     MXFStreamContext *sc = st->priv_data;
2145     uint8_t *vs_pack, *vsc_pack;
2146     int apt, ul_index, stype, pal;
2147
2148     if (mxf->header_written)
2149         return 1;
2150
2151     // Check for minimal frame size
2152     if (pkt->size < 120000)
2153         return -1;
2154
2155     apt      = pkt->data[4] & 0x7;
2156     vs_pack  = pkt->data + 80*5 + 48;
2157     vsc_pack = pkt->data + 80*5 + 53;
2158     stype    = vs_pack[3] & 0x1f;
2159     pal      = (vs_pack[3] >> 5) & 0x1;
2160
2161     if ((vsc_pack[2] & 0x07) == 0x02) {
2162         sc->aspect_ratio = (AVRational){ 16, 9 };
2163     } else {
2164         sc->aspect_ratio = (AVRational){ 4, 3 };
2165     }
2166
2167     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
2168     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
2169     // and set field dominance accordingly
2170     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
2171
2172     switch (stype) {
2173     case 0x18: // DV100 720p
2174         ul_index = 8+pal;
2175         if (sc->interlaced) {
2176             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
2177             sc->interlaced = 0;
2178         }
2179         break;
2180     case 0x14: // DV100 1080i
2181         ul_index = 6+pal;
2182         break;
2183     case 0x04: // DV50
2184         ul_index = 4+pal;
2185         break;
2186     default: // DV25
2187         if (!apt) { // IEC
2188             ul_index = 0+pal;
2189         } else {
2190             ul_index = 2+pal;
2191         }
2192     }
2193
2194     sc->container_ul = &mxf_dv_uls[ul_index].container_ul;
2195     sc->codec_ul = &mxf_dv_uls[ul_index].codec_ul;
2196
2197     sc->frame_size = pkt->size;
2198
2199     return 1;
2200 }
2201
2202 static const struct {
2203     UID uid;
2204     int frame_size;
2205     int profile;
2206     uint8_t interlaced;
2207     int intra_only; // 1 or 0 when there are separate UIDs for Long GOP and Intra, -1 when Intra/LGOP detection can be ignored
2208 } mxf_h264_codec_uls[] = {
2209     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 },      0,  66, 0, -1 }, // AVC Baseline
2210     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x20,0x01 },      0,  77, 0, -1 }, // AVC Main
2211     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x30,0x01 },      0,  88, 0, -1 }, // AVC Extended
2212     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x40,0x01 },      0, 100, 0, -1 }, // AVC High
2213     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x50,0x01 },      0, 110, 0,  0 }, // AVC High 10
2214     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x60,0x01 },      0, 122, 0,  0 }, // AVC High 422
2215     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x70,0x01 },      0, 244, 0,  0 }, // AVC High 444
2216     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0,  1 }, // AVC High 10 Intra
2217     {{ 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
2218     {{ 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
2219     {{ 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
2220     {{ 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
2221     {{ 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
2222     {{ 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
2223     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0,  1 }, // AVC High 422 Intra
2224     {{ 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
2225     {{ 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
2226     {{ 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
2227     {{ 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
2228     {{ 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
2229     {{ 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
2230     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x40,0x01 },      0, 244, 0,  1 }, // AVC High 444 Intra
2231     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x50,0x01 },      0,  44, 0, -1 }, // AVC CAVLC 444
2232 };
2233
2234 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
2235                                 AVPacket *pkt, MXFIndexEntry *e)
2236 {
2237     MXFContext *mxf = s->priv_data;
2238     MXFStreamContext *sc = st->priv_data;
2239     H264SPS seq, *const sps = &seq;
2240     GetBitContext gb;
2241     const uint8_t *buf = pkt->data;
2242     const uint8_t *buf_end = pkt->data + pkt->size;
2243     const uint8_t *nal_end;
2244     uint32_t state = -1;
2245     int extra_size = 512; // support AVC Intra files without SPS/PPS header
2246     int i, frame_size, slice_type, has_sps = 0, intra_only = 0, ret;
2247
2248     for (;;) {
2249         buf = avpriv_find_start_code(buf, buf_end, &state);
2250         if (buf >= buf_end)
2251             break;
2252
2253         switch (state & 0x1f) {
2254         case H264_NAL_SPS:
2255             e->flags |= 0x40;
2256
2257             if (mxf->header_written)
2258                 break;
2259
2260             nal_end = ff_avc_find_startcode(buf, buf_end);
2261             ret = ff_avc_decode_sps(sps, buf, nal_end - buf);
2262             if (ret < 0) {
2263                 av_log(s, AV_LOG_ERROR, "error parsing sps\n");
2264                 return 0;
2265             }
2266             has_sps = 1;
2267
2268             sc->aspect_ratio.num = st->codecpar->width * sps->sar.num;
2269             sc->aspect_ratio.den = st->codecpar->height * sps->sar.den;
2270             av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2271                       sc->aspect_ratio.num, sc->aspect_ratio.den, 1024*1024);
2272             intra_only = (sps->constraint_set_flags >> 3) & 1;
2273             sc->interlaced = !sps->frame_mbs_only_flag;
2274             sc->component_depth = sps->bit_depth_luma;
2275
2276             buf = nal_end;
2277             break;
2278         case H264_NAL_PPS:
2279             if (e->flags & 0x40) { // sequence header present
2280                 e->flags |= 0x80; // random access
2281                 extra_size = 0;
2282             }
2283             break;
2284         case H264_NAL_IDR_SLICE:
2285             e->flags |= 0x04; // IDR Picture
2286             buf = buf_end;
2287             break;
2288         case H264_NAL_SLICE:
2289             init_get_bits8(&gb, buf, buf_end - buf);
2290             get_ue_golomb_long(&gb); // skip first_mb_in_slice
2291             slice_type = get_ue_golomb_31(&gb);
2292             switch (slice_type % 5) {
2293             case 0:
2294                 e->flags |= 0x20; // P Picture
2295                 e->flags |= 0x06; // P Picture
2296                 break;
2297             case 1:
2298                 e->flags |= 0x30; // B Picture
2299                 e->flags |= 0x03; // non-referenced B Picture
2300                 break;
2301             }
2302             buf = buf_end;
2303             break;
2304         default:
2305             break;
2306         }
2307     }
2308
2309     if (mxf->header_written)
2310         return 1;
2311
2312     if (!has_sps)
2313         sc->interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
2314     sc->codec_ul = NULL;
2315     frame_size = pkt->size + extra_size;
2316
2317     for (i = 0; i < FF_ARRAY_ELEMS(mxf_h264_codec_uls); i++) {
2318         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
2319             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
2320             sc->component_depth = 10; // AVC Intra is always 10 Bit
2321             sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
2322             st->codecpar->profile = mxf_h264_codec_uls[i].profile;
2323             sc->avc_intra = 1;
2324             mxf->cbr_index = 1;
2325             sc->frame_size = pkt->size;
2326             if (sc->interlaced)
2327                 sc->field_dominance = 1; // top field first is mandatory for AVC Intra
2328             break;
2329         } else if (has_sps && mxf_h264_codec_uls[i].frame_size == 0 &&
2330                    mxf_h264_codec_uls[i].profile == sps->profile_idc &&
2331                    (mxf_h264_codec_uls[i].intra_only < 0 ||
2332                     mxf_h264_codec_uls[i].intra_only == intra_only)) {
2333             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
2334             st->codecpar->profile = sps->profile_idc;
2335             st->codecpar->level = sps->level_idc;
2336             // continue to check for avc intra
2337         }
2338     }
2339
2340     if (!sc->codec_ul) {
2341         av_log(s, AV_LOG_ERROR, "h264 profile not supported\n");
2342         return 0;
2343     }
2344
2345     return 1;
2346 }
2347
2348 static const UID mxf_mpeg2_codec_uls[] = {
2349     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
2350     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
2351     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
2352     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
2353     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
2354     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
2355     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
2356     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
2357     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
2358     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
2359 };
2360
2361 static const UID *mxf_get_mpeg2_codec_ul(AVCodecParameters *par)
2362 {
2363     int long_gop = 1;
2364
2365     if (par->profile == 4) { // Main
2366         if (par->level == 8) // Main
2367             return &mxf_mpeg2_codec_uls[0+long_gop];
2368         else if (par->level == 4) // High
2369             return &mxf_mpeg2_codec_uls[4+long_gop];
2370         else if (par->level == 6) // High 14
2371             return &mxf_mpeg2_codec_uls[8+long_gop];
2372     } else if (par->profile == 0) { // 422
2373         if (par->level == 5) // Main
2374             return &mxf_mpeg2_codec_uls[2+long_gop];
2375         else if (par->level == 2) // High
2376             return &mxf_mpeg2_codec_uls[6+long_gop];
2377     }
2378     return NULL;
2379 }
2380
2381 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
2382                                  AVPacket *pkt, MXFIndexEntry *e)
2383 {
2384     MXFStreamContext *sc = st->priv_data;
2385     uint32_t c = -1;
2386     int i;
2387
2388     for(i = 0; i < pkt->size - 4; i++) {
2389         c = (c<<8) + pkt->data[i];
2390         if (c == 0x1b5) {
2391             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
2392                 st->codecpar->profile = pkt->data[i+1] & 0x07;
2393                 st->codecpar->level   = pkt->data[i+2] >> 4;
2394                 sc->low_delay = pkt->data[i+6] >> 7;
2395             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
2396                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
2397                 if (sc->interlaced)
2398                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
2399                 break;
2400             }
2401         } else if (c == 0x1b8) { // gop
2402             if (pkt->data[i+4]>>6 & 0x01) { // closed
2403                 if (sc->seq_closed_gop == -1)
2404                     sc->seq_closed_gop = 1;
2405                 sc->closed_gop = 1;
2406                 if (e->flags & 0x40) // sequence header present
2407                     e->flags |= 0x80; // random access
2408             } else {
2409                 sc->seq_closed_gop = 0;
2410                 sc->closed_gop = 0;
2411             }
2412         } else if (c == 0x1b3) { // seq
2413             e->flags |= 0x40;
2414             switch ((pkt->data[i+4]>>4) & 0xf) {
2415             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
2416             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
2417             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
2418             default:
2419                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2420                           st->codecpar->width, st->codecpar->height, 1024*1024);
2421             }
2422         } else if (c == 0x100) { // pic
2423             int pict_type = (pkt->data[i+2]>>3) & 0x07;
2424             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
2425             if (pict_type == 2) { // P-frame
2426                 e->flags |= 0x22;
2427                 sc->closed_gop = 0; // reset closed GOP, don't matter anymore
2428             } else if (pict_type == 3) { // B-frame
2429                 if (sc->closed_gop)
2430                     e->flags |= 0x13; // only backward prediction
2431                 else
2432                     e->flags |= 0x33;
2433                 sc->temporal_reordering = -1;
2434             } else if (!pict_type) {
2435                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
2436                 return 0;
2437             }
2438         }
2439     }
2440     if (s->oformat != &ff_mxf_d10_muxer)
2441         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);
2442     return !!sc->codec_ul;
2443 }
2444
2445 static uint64_t mxf_parse_timestamp(int64_t timestamp64)
2446 {
2447     time_t timestamp = timestamp64 / 1000000;
2448     struct tm tmbuf;
2449     struct tm *time = gmtime_r(&timestamp, &tmbuf);
2450     if (!time)
2451         return 0;
2452     return (uint64_t)(time->tm_year+1900) << 48 |
2453            (uint64_t)(time->tm_mon+1)     << 40 |
2454            (uint64_t) time->tm_mday       << 32 |
2455                       time->tm_hour       << 24 |
2456                       time->tm_min        << 16 |
2457                       time->tm_sec        << 8  |
2458                       (timestamp64 % 1000000) / 4000;
2459 }
2460
2461 static void mxf_gen_umid(AVFormatContext *s)
2462 {
2463     MXFContext *mxf = s->priv_data;
2464     uint32_t seed = av_get_random_seed();
2465     uint64_t umid = seed + 0x5294713400000000LL;
2466
2467     AV_WB64(mxf->umid  , umid);
2468     AV_WB64(mxf->umid+8, umid>>8);
2469
2470     mxf->instance_number = seed & 0xFFFFFF;
2471 }
2472
2473 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational tbc)
2474 {
2475     MXFContext *mxf = s->priv_data;
2476     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2477
2478     if (!ff_mxf_get_content_package_rate(tbc)) {
2479         if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
2480             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);
2481             return AVERROR(EINVAL);
2482         } else {
2483             av_log(s, AV_LOG_WARNING, "Unofficial frame rate %d/%d.\n", tbc.den, tbc.num);
2484         }
2485     }
2486
2487     mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2488     if (!tcr)
2489         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2490
2491     if (tcr)
2492         return av_timecode_init_from_string(&mxf->tc, av_inv_q(tbc), tcr->value, s);
2493     else
2494         return av_timecode_init(&mxf->tc, av_inv_q(tbc), 0, 0, s);
2495 }
2496
2497 static int mxf_write_header(AVFormatContext *s)
2498 {
2499     MXFContext *mxf = s->priv_data;
2500     int i, ret;
2501     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2502     int64_t timestamp = 0;
2503
2504     if (!s->nb_streams)
2505         return -1;
2506
2507     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {
2508         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2509         return -1;
2510     }
2511
2512     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))
2513         mxf->store_user_comments = 0;
2514
2515     for (i = 0; i < s->nb_streams; i++) {
2516         AVStream *st = s->streams[i];
2517         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2518         if (!sc)
2519             return AVERROR(ENOMEM);
2520         st->priv_data = sc;
2521         sc->index = -1;
2522
2523         if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2524             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2525             return -1;
2526         }
2527
2528         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2529             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codecpar->format);
2530             // TODO: should be avg_frame_rate
2531             AVRational tbc = st->time_base;
2532             // Default component depth to 8
2533             sc->component_depth = 8;
2534             sc->h_chroma_sub_sample = 2;
2535             sc->v_chroma_sub_sample = 2;
2536             sc->color_siting = 0xFF;
2537
2538             if (st->codecpar->sample_aspect_ratio.num && st->codecpar->sample_aspect_ratio.den) {
2539                 sc->aspect_ratio = av_mul_q(st->codecpar->sample_aspect_ratio,
2540                                             av_make_q(st->codecpar->width, st->codecpar->height));
2541             }
2542
2543             if (pix_desc) {
2544                 sc->component_depth     = pix_desc->comp[0].depth;
2545                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2546                 sc->v_chroma_sub_sample = 1 << pix_desc->log2_chroma_h;
2547             }
2548             switch (ff_choose_chroma_location(s, st)) {
2549             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2550             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2551             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2552             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2553             }
2554
2555             mxf->content_package_rate = ff_mxf_get_content_package_rate(tbc);
2556             mxf->time_base = tbc;
2557             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2558             if((ret = mxf_init_timecode(s, st, tbc)) < 0)
2559                 return ret;
2560
2561             if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2562                 sc->seq_closed_gop = -1; // unknown yet
2563             }
2564
2565             sc->video_bit_rate = st->codecpar->bit_rate;
2566
2567             if (s->oformat == &ff_mxf_d10_muxer ||
2568                 st->codecpar->codec_id == AV_CODEC_ID_DNXHD ||
2569                 st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO)
2570                 mxf->cbr_index = 1;
2571
2572             if (s->oformat == &ff_mxf_d10_muxer) {
2573                 int ntsc = mxf->time_base.den != 25;
2574                 int ul_index;
2575
2576                 if (st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
2577                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support MPEG-2 Video\n");
2578                     return AVERROR(EINVAL);
2579                 }
2580                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2581                     ul_index = 0;
2582                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && ntsc) {
2583                     ul_index = 1;
2584                 } else if (sc->video_bit_rate == 40000000) {
2585                     ul_index = 2+ntsc;
2586                 } else if (sc->video_bit_rate == 30000000) {
2587                     ul_index = 4+ntsc;
2588                 } else {
2589                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2590                     return -1;
2591                 }
2592
2593                 sc->codec_ul = &mxf_d10_codec_uls[ul_index];
2594                 sc->container_ul = &mxf_d10_container_uls[ul_index];
2595                 sc->index = INDEX_D10_VIDEO;
2596                 sc->signal_standard = 1;
2597                 sc->color_siting = 0;
2598                 sc->frame_size = (int64_t)sc->video_bit_rate *
2599                     mxf->time_base.num / (8*mxf->time_base.den);
2600             }
2601             if (mxf->signal_standard >= 0)
2602                 sc->signal_standard = mxf->signal_standard;
2603         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2604             char bsf_arg[32];
2605             if (st->codecpar->sample_rate != 48000) {
2606                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2607                 return -1;
2608             }
2609             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
2610             if (s->oformat == &ff_mxf_d10_muxer) {
2611                 if (st->index != 1) {
2612                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2613                     return -1;
2614                 }
2615                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2616                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2617                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2618                 }
2619                 sc->index = INDEX_D10_AUDIO;
2620                 sc->container_ul = ((MXFStreamContext*)s->streams[0]->priv_data)->container_ul;
2621                 sc->frame_size = 4 + 8 * av_rescale_rnd(st->codecpar->sample_rate, mxf->time_base.num, mxf->time_base.den, AV_ROUND_UP) * 4;
2622             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2623                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2624
2625                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2626                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2627                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2628                     return AVERROR_PATCHWELCOME;
2629                 }
2630                 if (st->codecpar->channels != 1) {
2631                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2632                     return AVERROR(EINVAL);
2633                 }
2634
2635                 mxf->time_base = st->time_base;
2636                 if((ret = mxf_init_timecode(s, st, tbc)) < 0)
2637                     return ret;
2638
2639                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
2640                 sc->index = INDEX_WAV;
2641             } else {
2642                 mxf->slice_count = 1;
2643                 sc->frame_size = st->codecpar->channels *
2644                                  av_rescale_rnd(st->codecpar->sample_rate, mxf->time_base.num, mxf->time_base.den, AV_ROUND_UP) *
2645                                  av_get_bits_per_sample(st->codecpar->codec_id) / 8;
2646             }
2647             snprintf(bsf_arg, sizeof(bsf_arg), "r=%d/%d", mxf->tc.rate.num, mxf->tc.rate.den);
2648             ret = ff_stream_add_bitstream_filter(st, "pcm_rechunk", bsf_arg);
2649             if (ret < 0)
2650                 return ret;
2651         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2652             AVDictionaryEntry *e = av_dict_get(st->metadata, "data_type", NULL, 0);
2653             if (e && !strcmp(e->value, "vbi_vanc_smpte_436M")) {
2654                 sc->index = INDEX_S436M;
2655             } else {
2656                 av_log(s, AV_LOG_ERROR, "track %d: unsupported data type\n", i);
2657                 return -1;
2658             }
2659             if (st->index != s->nb_streams - 1) {
2660                 av_log(s, AV_LOG_ERROR, "data track must be placed last\n");
2661                 return -1;
2662             }
2663         }
2664
2665         if (sc->index == -1) {
2666             sc->index = mxf_get_essence_container_ul_index(st->codecpar->codec_id);
2667             if (sc->index == -1) {
2668                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2669                        "codec not currently supported in container\n", i);
2670                 return -1;
2671             }
2672         }
2673
2674         if (!sc->codec_ul)
2675             sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2676         if (!sc->container_ul)
2677             sc->container_ul = &mxf_essence_container_uls[sc->index].container_ul;
2678
2679         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2680         sc->track_essence_element_key[15] = present[sc->index];
2681         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2682
2683         if (!present[sc->index])
2684             mxf->essence_container_count++;
2685         present[sc->index]++;
2686     }
2687
2688     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2689         mxf->essence_container_count = 1;
2690     }
2691
2692     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2693         mxf_gen_umid(s);
2694
2695     for (i = 0; i < s->nb_streams; i++) {
2696         MXFStreamContext *sc = s->streams[i]->priv_data;
2697         // update element count
2698         sc->track_essence_element_key[13] = present[sc->index];
2699         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[INDEX_DV].element_ul, 13)) // DV
2700             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2701         else
2702             sc->order = AV_RB32(sc->track_essence_element_key+12);
2703     }
2704
2705     if (ff_parse_creation_time_metadata(s, &timestamp, 0) > 0)
2706         mxf->timestamp = mxf_parse_timestamp(timestamp);
2707     mxf->duration = -1;
2708
2709     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2710     if (!mxf->timecode_track)
2711         return AVERROR(ENOMEM);
2712     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2713     if (!mxf->timecode_track->priv_data)
2714         return AVERROR(ENOMEM);
2715     mxf->timecode_track->index = -1;
2716
2717     return 0;
2718 }
2719
2720 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2721 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 };
2722
2723 static void mxf_write_system_item(AVFormatContext *s)
2724 {
2725     MXFContext *mxf = s->priv_data;
2726     AVIOContext *pb = s->pb;
2727     unsigned frame;
2728     uint32_t time_code;
2729     int i, system_item_bitmap = 0x58; // UL, user date/time stamp, picture present
2730
2731     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2732
2733     // write system metadata pack
2734     avio_write(pb, system_metadata_pack_key, 16);
2735     klv_encode_ber4_length(pb, 57);
2736
2737     for (i = 0; i < s->nb_streams; i++) {
2738         if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2739             system_item_bitmap |= 0x4;
2740         else if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2741             system_item_bitmap |= 0x2;
2742     }
2743     avio_w8(pb, system_item_bitmap);
2744     avio_w8(pb, mxf->content_package_rate); // content package rate
2745     avio_w8(pb, 0x00); // content package type
2746     avio_wb16(pb, 0x00); // channel handle
2747     avio_wb16(pb, frame & 0xFFFF); // continuity count, supposed to overflow
2748     if (mxf->essence_container_count > 1)
2749         avio_write(pb, multiple_desc_ul, 16);
2750     else {
2751         MXFStreamContext *sc = s->streams[0]->priv_data;
2752         avio_write(pb, *sc->container_ul, 16);
2753     }
2754     avio_w8(pb, 0);
2755     avio_wb64(pb, 0);
2756     avio_wb64(pb, 0); // creation date/time stamp
2757
2758     avio_w8(pb, 0x81); // SMPTE 12M time code
2759     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2760     avio_wb32(pb, time_code);
2761     avio_wb32(pb, 0); // binary group data
2762     avio_wb64(pb, 0);
2763
2764     // write system metadata package set
2765     avio_write(pb, system_metadata_package_set_key, 16);
2766     klv_encode_ber4_length(pb, 35);
2767     avio_w8(pb, 0x83); // UMID
2768     avio_wb16(pb, 0x20);
2769     mxf_write_umid(s, 1);
2770 }
2771
2772 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2773 {
2774     MXFContext *mxf = s->priv_data;
2775     AVIOContext *pb = s->pb;
2776     int frame_size = pkt->size / st->codecpar->block_align;
2777     uint8_t *samples = pkt->data;
2778     uint8_t *end = pkt->data + pkt->size;
2779     int i;
2780
2781     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2782
2783     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2784     avio_wl16(pb, frame_size);
2785     avio_w8(pb, (1<<st->codecpar->channels)-1);
2786
2787     while (samples < end) {
2788         for (i = 0; i < st->codecpar->channels; i++) {
2789             uint32_t sample;
2790             if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
2791                 sample = AV_RL24(samples)<< 4;
2792                 samples += 3;
2793             } else {
2794                 sample = AV_RL16(samples)<<12;
2795                 samples += 2;
2796             }
2797             avio_wl32(pb, sample | i);
2798         }
2799         for (; i < 8; i++)
2800             avio_wl32(pb, i);
2801     }
2802 }
2803
2804 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2805 {
2806     MXFContext *mxf = s->priv_data;
2807     AVIOContext *pb = s->pb;
2808     AVStream *st = s->streams[0];
2809     MXFStreamContext *sc = st->priv_data;
2810     const uint8_t *key = NULL;
2811
2812     int err;
2813
2814     if (!mxf->header_written)
2815         key = body_partition_key;
2816
2817     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2818         return err;
2819     mxf_write_klv_fill(s);
2820     avio_write(pb, sc->track_essence_element_key, 16);
2821     klv_encode_ber9_length(pb, mxf->body_offset);
2822     return 0;
2823 }
2824
2825 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2826 {
2827     MXFContext *mxf = s->priv_data;
2828     AVIOContext *pb = s->pb;
2829
2830     int err;
2831
2832     if (!mxf->header_written) {
2833         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2834             return err;
2835         mxf_write_klv_fill(s);
2836
2837         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2838             return err;
2839         mxf->header_written = 1;
2840     }
2841
2842     if (!mxf->edit_unit_byte_count) {
2843         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2844         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2845         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2846     }
2847     mxf->edit_units_count++;
2848     avio_write(pb, pkt->data, pkt->size);
2849     mxf->body_offset += pkt->size;
2850
2851     return 0;
2852 }
2853
2854 static void mxf_compute_edit_unit_byte_count(AVFormatContext *s)
2855 {
2856     MXFContext *mxf = s->priv_data;
2857     int i;
2858
2859     if (s->oformat == &ff_mxf_opatom_muxer) {
2860         MXFStreamContext *sc = s->streams[0]->priv_data;
2861         mxf->edit_unit_byte_count = sc->frame_size;
2862         return;
2863     }
2864
2865     mxf->edit_unit_byte_count = KAG_SIZE; // system element
2866     for (i = 0; i < s->nb_streams; i++) {
2867         AVStream *st = s->streams[i];
2868         MXFStreamContext *sc = st->priv_data;
2869         sc->slice_offset = mxf->edit_unit_byte_count;
2870         mxf->edit_unit_byte_count += 16 + 4 + sc->frame_size;
2871         mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2872     }
2873 }
2874
2875 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2876 {
2877     MXFContext *mxf = s->priv_data;
2878     AVIOContext *pb = s->pb;
2879     AVStream *st = s->streams[pkt->stream_index];
2880     MXFStreamContext *sc = st->priv_data;
2881     MXFIndexEntry ie = {0};
2882     int err;
2883
2884     if (!mxf->cbr_index && !mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2885         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2886                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2887             mxf->edit_units_count = 0;
2888             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2889             return err;
2890         }
2891     }
2892
2893     if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2894         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2895             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2896             return -1;
2897         }
2898     } else if (st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
2899         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2900             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2901             return -1;
2902         }
2903     } else if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {
2904         if (!mxf_parse_prores_frame(s, st, pkt)) {
2905             av_log(s, AV_LOG_ERROR, "could not get prores profile\n");
2906             return -1;
2907         }
2908     } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
2909         if (!mxf_parse_dv_frame(s, st, pkt)) {
2910             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2911             return -1;
2912         }
2913     } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2914         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2915             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2916             return -1;
2917         }
2918     }
2919
2920     if (mxf->cbr_index) {
2921         if (pkt->size != sc->frame_size && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2922             av_log(s, AV_LOG_ERROR, "track %d: frame size does not match index unit size, %d != %d\n",
2923                    st->index, pkt->size, sc->frame_size);
2924             return -1;
2925         }
2926         if (!mxf->header_written)
2927             mxf_compute_edit_unit_byte_count(s);
2928     }
2929
2930     if (s->oformat == &ff_mxf_opatom_muxer)
2931         return mxf_write_opatom_packet(s, pkt, &ie);
2932
2933     if (!mxf->header_written) {
2934         if (mxf->edit_unit_byte_count) {
2935             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2936                 return err;
2937             mxf_write_klv_fill(s);
2938             mxf_write_index_table_segment(s);
2939         } else {
2940             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2941                 return err;
2942         }
2943         mxf->header_written = 1;
2944     }
2945
2946     if (st->index == 0) {
2947         if (!mxf->edit_unit_byte_count &&
2948             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2949             !(ie.flags & 0x33)) { // I-frame, GOP start
2950             mxf_write_klv_fill(s);
2951             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2952                 return err;
2953             mxf_write_klv_fill(s);
2954             mxf_write_index_table_segment(s);
2955         }
2956
2957         mxf_write_klv_fill(s);
2958         mxf_write_system_item(s);
2959
2960         if (!mxf->edit_unit_byte_count) {
2961             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2962             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2963             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2964             mxf->body_offset += KAG_SIZE; // size of system element
2965         }
2966         mxf->edit_units_count++;
2967     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2968         if (!mxf->edit_units_count) {
2969             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
2970             return AVERROR_PATCHWELCOME;
2971         }
2972         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2973             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2974     }
2975
2976     mxf_write_klv_fill(s);
2977     avio_write(pb, sc->track_essence_element_key, 16); // write key
2978     if (s->oformat == &ff_mxf_d10_muxer &&
2979         st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2980         mxf_write_d10_audio_packet(s, st, pkt);
2981     } else {
2982         klv_encode_ber4_length(pb, pkt->size); // write length
2983         avio_write(pb, pkt->data, pkt->size);
2984         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2985     }
2986
2987     return 0;
2988 }
2989
2990 static void mxf_write_random_index_pack(AVFormatContext *s)
2991 {
2992     MXFContext *mxf = s->priv_data;
2993     AVIOContext *pb = s->pb;
2994     uint64_t pos = avio_tell(pb);
2995     int i;
2996
2997     avio_write(pb, ff_mxf_random_index_pack_key, 16);
2998     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2999
3000     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
3001         avio_wb32(pb, 1); // BodySID of header partition
3002     else
3003         avio_wb32(pb, 0);
3004     avio_wb64(pb, 0); // offset of header partition
3005
3006     for (i = 0; i < mxf->body_partitions_count; i++) {
3007         avio_wb32(pb, 1); // BodySID
3008         avio_wb64(pb, mxf->body_partition_offset[i]);
3009     }
3010
3011     avio_wb32(pb, 0); // BodySID of footer partition
3012     avio_wb64(pb, mxf->footer_partition_offset);
3013
3014     avio_wb32(pb, avio_tell(pb) - pos + 4);
3015 }
3016
3017 static int mxf_write_footer(AVFormatContext *s)
3018 {
3019     MXFContext *mxf = s->priv_data;
3020     AVIOContext *pb = s->pb;
3021     int i, err;
3022
3023     if (!mxf->header_written ||
3024         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
3025         /* reason could be invalid options/not supported codec/out of memory */
3026         return AVERROR_UNKNOWN;
3027     }
3028
3029     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
3030
3031     mxf_write_klv_fill(s);
3032     mxf->footer_partition_offset = avio_tell(pb);
3033     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
3034         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
3035             return err;
3036     } else {
3037         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
3038             return err;
3039         mxf_write_klv_fill(s);
3040         mxf_write_index_table_segment(s);
3041     }
3042
3043     mxf_write_klv_fill(s);
3044     mxf_write_random_index_pack(s);
3045
3046     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
3047         if (s->oformat == &ff_mxf_opatom_muxer) {
3048             /* rewrite body partition to update lengths */
3049             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
3050             if ((err = mxf_write_opatom_body_partition(s)) < 0)
3051                 return err;
3052         }
3053
3054         avio_seek(pb, 0, SEEK_SET);
3055         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
3056             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
3057                 return err;
3058             mxf_write_klv_fill(s);
3059             mxf_write_index_table_segment(s);
3060         } else {
3061             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
3062                 return err;
3063         }
3064         // update footer partition offset
3065         for (i = 0; i < mxf->body_partitions_count; i++) {
3066             avio_seek(pb, mxf->body_partition_offset[i]+44, SEEK_SET);
3067             avio_wb64(pb, mxf->footer_partition_offset);
3068         }
3069     }
3070
3071     return 0;
3072 }
3073
3074 static void mxf_deinit(AVFormatContext *s)
3075 {
3076     MXFContext *mxf = s->priv_data;
3077
3078     av_freep(&mxf->index_entries);
3079     av_freep(&mxf->body_partition_offset);
3080     if (mxf->timecode_track) {
3081         av_freep(&mxf->timecode_track->priv_data);
3082         av_freep(&mxf->timecode_track);
3083     }
3084 }
3085
3086 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
3087 {
3088     int i, stream_count = 0;
3089
3090     for (i = 0; i < s->nb_streams; i++)
3091         stream_count += !!s->streams[i]->internal->last_in_packet_buffer;
3092
3093     if (stream_count && (s->nb_streams == stream_count || flush)) {
3094         AVPacketList *pktl = s->internal->packet_buffer;
3095         if (s->nb_streams != stream_count) {
3096             AVPacketList *last = NULL;
3097             // find last packet in edit unit
3098             while (pktl) {
3099                 if (!stream_count || pktl->pkt.stream_index == 0)
3100                     break;
3101                 // update last packet in packet buffer
3102                 if (s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer != pktl)
3103                     s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer = pktl;
3104                 last = pktl;
3105                 pktl = pktl->next;
3106                 stream_count--;
3107             }
3108             // purge packet queue
3109             while (pktl) {
3110                 AVPacketList *next = pktl->next;
3111                 av_packet_unref(&pktl->pkt);
3112                 av_freep(&pktl);
3113                 pktl = next;
3114             }
3115             if (last)
3116                 last->next = NULL;
3117             else {
3118                 s->internal->packet_buffer = NULL;
3119                 s->internal->packet_buffer_end= NULL;
3120                 goto out;
3121             }
3122             pktl = s->internal->packet_buffer;
3123         }
3124
3125         *out = pktl->pkt;
3126         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
3127         s->internal->packet_buffer = pktl->next;
3128         if(s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer == pktl)
3129             s->streams[pktl->pkt.stream_index]->internal->last_in_packet_buffer= NULL;
3130         if(!s->internal->packet_buffer)
3131             s->internal->packet_buffer_end= NULL;
3132         av_freep(&pktl);
3133         return 1;
3134     } else {
3135     out:
3136         return 0;
3137     }
3138 }
3139
3140 static int mxf_compare_timestamps(AVFormatContext *s, const AVPacket *next,
3141                                                       const AVPacket *pkt)
3142 {
3143     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
3144     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
3145
3146     return next->dts > pkt->dts ||
3147         (next->dts == pkt->dts && sc->order < sc2->order);
3148 }
3149
3150 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
3151 {
3152     int ret;
3153     if (pkt) {
3154         MXFStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
3155         pkt->pts = pkt->dts = sc->pkt_cnt++;
3156         if ((ret = ff_interleave_add_packet(s, pkt, mxf_compare_timestamps)) < 0)
3157             return ret;
3158     }
3159     return mxf_interleave_get_packet(s, out, NULL, flush);
3160 }
3161
3162 #define MXF_COMMON_OPTIONS \
3163     { "signal_standard", "Force/set Signal Standard",\
3164       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3165     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
3166       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3167     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
3168       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3169     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
3170       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3171     { "smpte274m", "SMPTE 274M (1125 line)",\
3172       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3173     { "smpte296m", "SMPTE 296M (750 line progressive)",\
3174       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3175     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
3176       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3177     { "smpte428", "SMPTE 428-1 DCDM",\
3178       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
3179
3180
3181
3182 static const AVOption mxf_options[] = {
3183     MXF_COMMON_OPTIONS
3184     { "store_user_comments", "",
3185       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3186     { NULL },
3187 };
3188
3189 static const AVClass mxf_muxer_class = {
3190     .class_name     = "MXF muxer",
3191     .item_name      = av_default_item_name,
3192     .option         = mxf_options,
3193     .version        = LIBAVUTIL_VERSION_INT,
3194 };
3195
3196 static const AVOption d10_options[] = {
3197     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
3198       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
3199     MXF_COMMON_OPTIONS
3200     { "store_user_comments", "",
3201       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3202     { NULL },
3203 };
3204
3205 static const AVClass mxf_d10_muxer_class = {
3206     .class_name     = "MXF-D10 muxer",
3207     .item_name      = av_default_item_name,
3208     .option         = d10_options,
3209     .version        = LIBAVUTIL_VERSION_INT,
3210 };
3211
3212 static const AVOption opatom_options[] = {
3213     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
3214         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
3215     MXF_COMMON_OPTIONS
3216     { "store_user_comments", "",
3217       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3218     { NULL },
3219 };
3220
3221 static const AVClass mxf_opatom_muxer_class = {
3222     .class_name     = "MXF-OPAtom muxer",
3223     .item_name      = av_default_item_name,
3224     .option         = opatom_options,
3225     .version        = LIBAVUTIL_VERSION_INT,
3226 };
3227
3228 AVOutputFormat ff_mxf_muxer = {
3229     .name              = "mxf",
3230     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
3231     .mime_type         = "application/mxf",
3232     .extensions        = "mxf",
3233     .priv_data_size    = sizeof(MXFContext),
3234     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3235     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
3236     .write_header      = mxf_write_header,
3237     .write_packet      = mxf_write_packet,
3238     .write_trailer     = mxf_write_footer,
3239     .deinit            = mxf_deinit,
3240     .flags             = AVFMT_NOTIMESTAMPS,
3241     .interleave_packet = mxf_interleave,
3242     .priv_class        = &mxf_muxer_class,
3243 };
3244
3245 AVOutputFormat ff_mxf_d10_muxer = {
3246     .name              = "mxf_d10",
3247     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
3248     .mime_type         = "application/mxf",
3249     .priv_data_size    = sizeof(MXFContext),
3250     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3251     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
3252     .write_header      = mxf_write_header,
3253     .write_packet      = mxf_write_packet,
3254     .write_trailer     = mxf_write_footer,
3255     .deinit            = mxf_deinit,
3256     .flags             = AVFMT_NOTIMESTAMPS,
3257     .interleave_packet = mxf_interleave,
3258     .priv_class        = &mxf_d10_muxer_class,
3259 };
3260
3261 AVOutputFormat ff_mxf_opatom_muxer = {
3262     .name              = "mxf_opatom",
3263     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
3264     .mime_type         = "application/mxf",
3265     .extensions        = "mxf",
3266     .priv_data_size    = sizeof(MXFContext),
3267     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3268     .video_codec       = AV_CODEC_ID_DNXHD,
3269     .write_header      = mxf_write_header,
3270     .write_packet      = mxf_write_packet,
3271     .write_trailer     = mxf_write_footer,
3272     .deinit            = mxf_deinit,
3273     .flags             = AVFMT_NOTIMESTAMPS,
3274     .interleave_packet = mxf_interleave,
3275     .priv_class        = &mxf_opatom_muxer_class,
3276 };