FFmpeg: libavformat/mxfenc.c Source File

00001 /*
00002  * MXF muxer
00003  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
00004  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 /*
00024  * References
00025  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
00026  * SMPTE 377M MXF File Format Specifications
00027  * SMPTE 379M MXF Generic Container
00028  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
00029  * SMPTE RP210: SMPTE Metadata Dictionary
00030  * SMPTE RP224: Registry of SMPTE Universal Labels
00031  */
00032 
00033 //#define DEBUG
00034 
00035 #include <math.h>
00036 #include <time.h>
00037 
00038 #include "libavutil/opt.h"
00039 #include "libavutil/random_seed.h"
00040 #include "libavutil/timecode.h"
00041 #include "libavutil/avassert.h"
00042 #include "libavcodec/bytestream.h"
00043 #include "libavcodec/dnxhddata.h"
00044 #include "audiointerleave.h"
00045 #include "avformat.h"
00046 #include "internal.h"
00047 #include "mxf.h"
00048 #include "config.h"
00049 
00050 extern AVOutputFormat ff_mxf_d10_muxer;
00051 
00052 #define EDIT_UNITS_PER_BODY 250
00053 #define KAG_SIZE 512
00054 
00055 typedef struct {
00056     int local_tag;
00057     UID uid;
00058 } MXFLocalTagPair;
00059 
00060 typedef struct {
00061     uint8_t flags;
00062     uint64_t offset;
00063     unsigned slice_offset; 
00064     uint16_t temporal_ref;
00065 } MXFIndexEntry;
00066 
00067 typedef struct {
00068     AudioInterleaveContext aic;
00069     UID track_essence_element_key;
00070     int index;               
00071     const UID *codec_ul;
00072     int order;               
00073     int interlaced;          
00074     int field_dominance;     
00075     int component_depth;
00076     int temporal_reordering;
00077     AVRational aspect_ratio; 
00078     int closed_gop;          
00079 } MXFStreamContext;
00080 
00081 typedef struct {
00082     UID container_ul;
00083     UID element_ul;
00084     UID codec_ul;
00085     void (*write_desc)(AVFormatContext *, AVStream *);
00086 } MXFContainerEssenceEntry;
00087 
00088 static const struct {
00089     enum AVCodecID id;
00090     int index;
00091 } mxf_essence_mappings[] = {
00092     { AV_CODEC_ID_MPEG2VIDEO, 0 },
00093     { AV_CODEC_ID_PCM_S24LE,  1 },
00094     { AV_CODEC_ID_PCM_S16LE,  1 },
00095     { AV_CODEC_ID_DVVIDEO,   15 },
00096     { AV_CODEC_ID_DNXHD,     24 },
00097     { AV_CODEC_ID_NONE }
00098 };
00099 
00100 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
00101 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
00102 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
00103 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
00104 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
00105 
00106 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
00107     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
00108       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00109       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
00110       mxf_write_mpegvideo_desc },
00111     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
00112       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
00113       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00114       mxf_write_aes3_desc },
00115     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
00116       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
00117       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00118       mxf_write_wav_desc },
00119     // D-10 625/50 PAL 50mb/s
00120     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
00121       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00122       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
00123       mxf_write_cdci_desc },
00124     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
00125       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00126       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00127       mxf_write_generic_sound_desc },
00128     // D-10 525/60 NTSC 50mb/s
00129     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
00130       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00131       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
00132       mxf_write_cdci_desc },
00133     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
00134       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00135       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00136       mxf_write_generic_sound_desc },
00137     // D-10 625/50 PAL 40mb/s
00138     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
00139       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00140       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
00141       mxf_write_cdci_desc },
00142     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
00143       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00144       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00145       mxf_write_generic_sound_desc },
00146     // D-10 525/60 NTSC 40mb/s
00147     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
00148       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00149       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
00150       mxf_write_cdci_desc },
00151     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
00152       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00153       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00154       mxf_write_generic_sound_desc },
00155     // D-10 625/50 PAL 30mb/s
00156     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
00157       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00158       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
00159       mxf_write_cdci_desc },
00160     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
00161       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00162       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00163       mxf_write_generic_sound_desc },
00164     // D-10 525/60 NTSC 30mb/s
00165     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
00166       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00167       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
00168       mxf_write_cdci_desc },
00169     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
00170       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00171       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00172       mxf_write_generic_sound_desc },
00173     // DV Unknwon
00174     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
00175       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00176       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
00177       mxf_write_cdci_desc },
00178     // DV25 525/60
00179     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
00180       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00181       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
00182       mxf_write_cdci_desc },
00183     // DV25 625/50
00184     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
00185       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00186       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
00187       mxf_write_cdci_desc },
00188     // DV50 525/60
00189     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
00190       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00191       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
00192       mxf_write_cdci_desc },
00193     // DV50 625/50
00194     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
00195       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00196       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
00197       mxf_write_cdci_desc },
00198     // DV100 1080/60
00199     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
00200       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00201       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
00202       mxf_write_cdci_desc },
00203     // DV100 1080/50
00204     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
00205       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00206       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
00207       mxf_write_cdci_desc },
00208     // DV100 720/60
00209     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
00210       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00211       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
00212       mxf_write_cdci_desc },
00213     // DV100 720/50
00214     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
00215       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
00216       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
00217       mxf_write_cdci_desc },
00218     // DNxHD 1080p 10bit high
00219     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00220       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00221       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
00222       mxf_write_cdci_desc },
00223     // DNxHD 1080p 8bit medium
00224     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00225       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00226       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
00227       mxf_write_cdci_desc },
00228     // DNxHD 1080p 8bit high
00229     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00230       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00231       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
00232       mxf_write_cdci_desc },
00233     // DNxHD 1080i 10bit high
00234     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00235       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00236       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
00237       mxf_write_cdci_desc },
00238     // DNxHD 1080i 8bit medium
00239     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00240       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00241       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
00242       mxf_write_cdci_desc },
00243     // DNxHD 1080i 8bit high
00244     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00245       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00246       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
00247       mxf_write_cdci_desc },
00248     // DNxHD 720p 10bit
00249     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00250       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00251       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
00252       mxf_write_cdci_desc },
00253     // DNxHD 720p 8bit high
00254     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00255       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00256       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
00257       mxf_write_cdci_desc },
00258     // DNxHD 720p 8bit medium
00259     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00260       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00261       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
00262       mxf_write_cdci_desc },
00263     // DNxHD 720p 8bit low
00264     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
00265       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00266       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
00267       mxf_write_cdci_desc },
00268     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00269       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00270       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00271       NULL },
00272 };
00273 
00274 typedef struct MXFContext {
00275     AVClass *av_class;
00276     int64_t footer_partition_offset;
00277     int essence_container_count;
00278     AVRational time_base;
00279     int header_written;
00280     MXFIndexEntry *index_entries;
00281     unsigned edit_units_count;
00282     uint64_t timestamp;   
00283     uint8_t slice_count;  
00284     int last_indexed_edit_unit;
00285     uint64_t *body_partition_offset;
00286     unsigned body_partitions_count;
00287     int last_key_index;  
00288     uint64_t duration;
00289     AVTimecode tc;       
00290     AVStream *timecode_track;
00291     int timecode_base;       
00292     int edit_unit_byte_count; 
00293     uint64_t body_offset;
00294     uint32_t instance_number;
00295     uint8_t umid[16];        
00296 } MXFContext;
00297 
00298 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
00299 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
00300 
00304 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
00305 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
00306 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
00307 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
00308 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
00309 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
00310 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
00311 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
00312 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
00313 
00317 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
00318 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
00319 
00323 static const MXFLocalTagPair mxf_local_tag_batch[] = {
00324     // preface set
00325     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
00326     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
00327     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
00328     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
00329     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
00330     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
00331     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
00332     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
00333     // Identification
00334     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
00335     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
00336     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
00337     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
00338     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
00339     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
00340     // Content Storage
00341     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
00342     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
00343     // Essence Container Data
00344     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
00345     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
00346     // Package
00347     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
00348     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
00349     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
00350     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
00351     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
00352     // Track
00353     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
00354     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
00355     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
00356     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
00357     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
00358     // Sequence
00359     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
00360     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
00361     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
00362     // Source Clip
00363     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
00364     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
00365     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
00366     // Timecode Component
00367     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
00368     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
00369     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
00370     // File Descriptor
00371     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
00372     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
00373     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
00374     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
00375     // Generic Picture Essence Descriptor
00376     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
00377     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
00378     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
00379     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
00380     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
00381     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
00382     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
00383     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
00384     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
00385     // CDCI Picture Essence Descriptor
00386     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
00387     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
00388     // Generic Sound Essence Descriptor
00389     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
00390     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
00391     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
00392     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
00393     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
00394     // Index Table Segment
00395     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
00396     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
00397     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
00398     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
00399     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
00400     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
00401     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
00402     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
00403     // MPEG video Descriptor
00404     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
00405     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
00406     // Wave Audio Essence Descriptor
00407     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
00408     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
00409 };
00410 
00411 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
00412 {
00413     avio_write(pb, uuid_base, 12);
00414     avio_wb16(pb, type);
00415     avio_wb16(pb, value);
00416 }
00417 
00418 static void mxf_write_umid(AVFormatContext *s, int type)
00419 {
00420     MXFContext *mxf = s->priv_data;
00421     avio_write(s->pb, umid_ul, 13);
00422     avio_wb24(s->pb, mxf->instance_number);
00423     avio_write(s->pb, mxf->umid, 15);
00424     avio_w8(s->pb, type);
00425 }
00426 
00427 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
00428 {
00429     avio_wb32(pb, ref_count);
00430     avio_wb32(pb, 16);
00431 }
00432 
00433 static int klv_ber_length(uint64_t len)
00434 {
00435     if (len < 128)
00436         return 1;
00437     else
00438         return (av_log2(len) >> 3) + 2;
00439 }
00440 
00441 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
00442 {
00443     // Determine the best BER size
00444     int size;
00445     if (len < 128) {
00446         //short form
00447         avio_w8(pb, len);
00448         return 1;
00449     }
00450 
00451     size = (av_log2(len) >> 3) + 1;
00452 
00453     // long form
00454     avio_w8(pb, 0x80 + size);
00455     while(size) {
00456         size--;
00457         avio_w8(pb, len >> 8 * size & 0xff);
00458     }
00459     return 0;
00460 }
00461 
00462 static void klv_encode_ber4_length(AVIOContext *pb, int len)
00463 {
00464     avio_w8(pb, 0x80 + 3);
00465     avio_wb24(pb, len);
00466 }
00467 
00468 /*
00469  * Get essence container ul index
00470  */
00471 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
00472 {
00473     int i;
00474     for (i = 0; mxf_essence_mappings[i].id; i++)
00475         if (mxf_essence_mappings[i].id == id)
00476             return mxf_essence_mappings[i].index;
00477     return -1;
00478 }
00479 
00480 static void mxf_write_primer_pack(AVFormatContext *s)
00481 {
00482     AVIOContext *pb = s->pb;
00483     int local_tag_number, i = 0;
00484 
00485     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
00486 
00487     avio_write(pb, primer_pack_key, 16);
00488     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
00489 
00490     avio_wb32(pb, local_tag_number); // local_tag num
00491     avio_wb32(pb, 18); // item size, always 18 according to the specs
00492 
00493     for (i = 0; i < local_tag_number; i++) {
00494         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
00495         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
00496     }
00497 }
00498 
00499 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
00500 {
00501     avio_wb16(pb, tag);
00502     avio_wb16(pb, size);
00503 }
00504 
00505 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
00506 {
00507     avio_write(pb, header_metadata_key, 13);
00508     avio_wb24(pb, value);
00509 }
00510 
00511 static void mxf_free(AVFormatContext *s)
00512 {
00513     int i;
00514 
00515     for (i = 0; i < s->nb_streams; i++) {
00516         AVStream *st = s->streams[i];
00517         av_freep(&st->priv_data);
00518     }
00519 }
00520 
00521 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
00522 {
00523     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
00524     while (uls->uid[0]) {
00525         if (type == uls->id)
00526             break;
00527         uls++;
00528     }
00529     return uls;
00530 }
00531 
00532 static void mxf_write_essence_container_refs(AVFormatContext *s)
00533 {
00534     MXFContext *c = s->priv_data;
00535     AVIOContext *pb = s->pb;
00536     int i;
00537 
00538     mxf_write_refs_count(pb, c->essence_container_count);
00539     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
00540     for (i = 0; i < c->essence_container_count; i++) {
00541         MXFStreamContext *sc = s->streams[i]->priv_data;
00542         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
00543     }
00544 }
00545 
00546 static void mxf_write_preface(AVFormatContext *s)
00547 {
00548     MXFContext *mxf = s->priv_data;
00549     AVIOContext *pb = s->pb;
00550 
00551     mxf_write_metadata_key(pb, 0x012f00);
00552     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
00553     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
00554 
00555     // write preface set uid
00556     mxf_write_local_tag(pb, 16, 0x3C0A);
00557     mxf_write_uuid(pb, Preface, 0);
00558     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
00559 
00560     // last modified date
00561     mxf_write_local_tag(pb, 8, 0x3B02);
00562     avio_wb64(pb, mxf->timestamp);
00563 
00564     // write version
00565     mxf_write_local_tag(pb, 2, 0x3B05);
00566     avio_wb16(pb, 258); // v1.2
00567 
00568     // write identification_refs
00569     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
00570     mxf_write_refs_count(pb, 1);
00571     mxf_write_uuid(pb, Identification, 0);
00572 
00573     // write content_storage_refs
00574     mxf_write_local_tag(pb, 16, 0x3B03);
00575     mxf_write_uuid(pb, ContentStorage, 0);
00576 
00577     // operational pattern
00578     mxf_write_local_tag(pb, 16, 0x3B09);
00579     avio_write(pb, op1a_ul, 16);
00580 
00581     // write essence_container_refs
00582     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
00583     mxf_write_essence_container_refs(s);
00584 
00585     // write dm_scheme_refs
00586     mxf_write_local_tag(pb, 8, 0x3B0B);
00587     avio_wb64(pb, 0);
00588 }
00589 
00590 /*
00591  * Write a local tag containing an ascii string as utf-16
00592  */
00593 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
00594 {
00595     int i, size = strlen(value);
00596     mxf_write_local_tag(pb, size*2, tag);
00597     for (i = 0; i < size; i++)
00598         avio_wb16(pb, value[i]);
00599 }
00600 
00601 static void mxf_write_identification(AVFormatContext *s)
00602 {
00603     MXFContext *mxf = s->priv_data;
00604     AVIOContext *pb = s->pb;
00605     const char *company = "FFmpeg";
00606     const char *product = "OP1a Muxer";
00607     const char *version;
00608     int length;
00609 
00610     mxf_write_metadata_key(pb, 0x013000);
00611     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
00612 
00613     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
00614         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
00615     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
00616     klv_encode_ber_length(pb, length);
00617 
00618     // write uid
00619     mxf_write_local_tag(pb, 16, 0x3C0A);
00620     mxf_write_uuid(pb, Identification, 0);
00621     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
00622 
00623     // write generation uid
00624     mxf_write_local_tag(pb, 16, 0x3C09);
00625     mxf_write_uuid(pb, Identification, 1);
00626 
00627     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
00628     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
00629     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
00630 
00631     // write product uid
00632     mxf_write_local_tag(pb, 16, 0x3C05);
00633     mxf_write_uuid(pb, Identification, 2);
00634 
00635     // modification date
00636     mxf_write_local_tag(pb, 8, 0x3C06);
00637     avio_wb64(pb, mxf->timestamp);
00638 }
00639 
00640 static void mxf_write_content_storage(AVFormatContext *s)
00641 {
00642     AVIOContext *pb = s->pb;
00643 
00644     mxf_write_metadata_key(pb, 0x011800);
00645     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
00646     klv_encode_ber_length(pb, 92);
00647 
00648     // write uid
00649     mxf_write_local_tag(pb, 16, 0x3C0A);
00650     mxf_write_uuid(pb, ContentStorage, 0);
00651     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
00652 
00653     // write package reference
00654     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
00655     mxf_write_refs_count(pb, 2);
00656     mxf_write_uuid(pb, MaterialPackage, 0);
00657     mxf_write_uuid(pb, SourcePackage, 0);
00658 
00659     // write essence container data
00660     mxf_write_local_tag(pb, 8 + 16, 0x1902);
00661     mxf_write_refs_count(pb, 1);
00662     mxf_write_uuid(pb, EssenceContainerData, 0);
00663 }
00664 
00665 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00666 {
00667     MXFContext *mxf = s->priv_data;
00668     AVIOContext *pb = s->pb;
00669     MXFStreamContext *sc = st->priv_data;
00670 
00671     mxf_write_metadata_key(pb, 0x013b00);
00672     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
00673     klv_encode_ber_length(pb, 80);
00674 
00675     // write track uid
00676     mxf_write_local_tag(pb, 16, 0x3C0A);
00677     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
00678     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
00679 
00680     // write track id
00681     mxf_write_local_tag(pb, 4, 0x4801);
00682     avio_wb32(pb, st->index+2);
00683 
00684     // write track number
00685     mxf_write_local_tag(pb, 4, 0x4804);
00686     if (type == MaterialPackage)
00687         avio_wb32(pb, 0); // track number of material package is 0
00688     else
00689         avio_write(pb, sc->track_essence_element_key + 12, 4);
00690 
00691     mxf_write_local_tag(pb, 8, 0x4B01);
00692     avio_wb32(pb, mxf->time_base.den);
00693     avio_wb32(pb, mxf->time_base.num);
00694 
00695     // write origin
00696     mxf_write_local_tag(pb, 8, 0x4B02);
00697     avio_wb64(pb, 0);
00698 
00699     // write sequence refs
00700     mxf_write_local_tag(pb, 16, 0x4803);
00701     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
00702 }
00703 
00704 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 };
00705 
00706 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
00707 {
00708     MXFContext *mxf = s->priv_data;
00709     AVIOContext *pb = s->pb;
00710 
00711     // find data define uls
00712     mxf_write_local_tag(pb, 16, 0x0201);
00713     if (st == mxf->timecode_track)
00714         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
00715     else {
00716         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
00717         avio_write(pb, data_def_ul->uid, 16);
00718     }
00719 
00720     // write duration
00721     mxf_write_local_tag(pb, 8, 0x0202);
00722     avio_wb64(pb, mxf->duration);
00723 }
00724 
00725 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00726 {
00727     MXFContext *mxf = s->priv_data;
00728     AVIOContext *pb = s->pb;
00729     enum MXFMetadataSetType component;
00730 
00731     mxf_write_metadata_key(pb, 0x010f00);
00732     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
00733     klv_encode_ber_length(pb, 80);
00734 
00735     mxf_write_local_tag(pb, 16, 0x3C0A);
00736     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
00737 
00738     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
00739     mxf_write_common_fields(s, st);
00740 
00741     // write structural component
00742     mxf_write_local_tag(pb, 16 + 8, 0x1001);
00743     mxf_write_refs_count(pb, 1);
00744     if (st == mxf->timecode_track)
00745         component = TimecodeComponent;
00746     else
00747         component = SourceClip;
00748     if (type == SourcePackage)
00749         component += TypeBottom;
00750     mxf_write_uuid(pb, component, st->index);
00751 }
00752 
00753 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00754 {
00755     MXFContext *mxf = s->priv_data;
00756     AVIOContext *pb = s->pb;
00757 
00758     mxf_write_metadata_key(pb, 0x011400);
00759     klv_encode_ber_length(pb, 75);
00760 
00761     // UID
00762     mxf_write_local_tag(pb, 16, 0x3C0A);
00763     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
00764                    TimecodeComponent + TypeBottom, st->index);
00765 
00766     mxf_write_common_fields(s, st);
00767 
00768     // Start Time Code
00769     mxf_write_local_tag(pb, 8, 0x1501);
00770     avio_wb64(pb, mxf->tc.start);
00771 
00772     // Rounded Time Code Base
00773     mxf_write_local_tag(pb, 2, 0x1502);
00774     avio_wb16(pb, mxf->timecode_base);
00775 
00776     // Drop Frame
00777     mxf_write_local_tag(pb, 1, 0x1503);
00778     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
00779 }
00780 
00781 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00782 {
00783     AVIOContext *pb = s->pb;
00784     int i;
00785 
00786     mxf_write_metadata_key(pb, 0x011100);
00787     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
00788     klv_encode_ber_length(pb, 108);
00789 
00790     // write uid
00791     mxf_write_local_tag(pb, 16, 0x3C0A);
00792     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
00793 
00794     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
00795     mxf_write_common_fields(s, st);
00796 
00797     // write start_position
00798     mxf_write_local_tag(pb, 8, 0x1201);
00799     avio_wb64(pb, 0);
00800 
00801     // write source package uid, end of the reference
00802     mxf_write_local_tag(pb, 32, 0x1101);
00803     if (type == SourcePackage) {
00804         for (i = 0; i < 4; i++)
00805             avio_wb64(pb, 0);
00806     } else
00807         mxf_write_umid(s, 1);
00808 
00809     // write source track id
00810     mxf_write_local_tag(pb, 4, 0x1102);
00811     if (type == SourcePackage)
00812         avio_wb32(pb, 0);
00813     else
00814         avio_wb32(pb, st->index+2);
00815 }
00816 
00817 static void mxf_write_multi_descriptor(AVFormatContext *s)
00818 {
00819     MXFContext *mxf = s->priv_data;
00820     AVIOContext *pb = s->pb;
00821     const uint8_t *ul;
00822     int i;
00823 
00824     mxf_write_metadata_key(pb, 0x014400);
00825     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
00826     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
00827 
00828     mxf_write_local_tag(pb, 16, 0x3C0A);
00829     mxf_write_uuid(pb, MultipleDescriptor, 0);
00830     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
00831 
00832     // write sample rate
00833     mxf_write_local_tag(pb, 8, 0x3001);
00834     avio_wb32(pb, mxf->time_base.den);
00835     avio_wb32(pb, mxf->time_base.num);
00836 
00837     // write essence container ul
00838     mxf_write_local_tag(pb, 16, 0x3004);
00839     if (mxf->essence_container_count > 1)
00840         ul = multiple_desc_ul;
00841     else {
00842         MXFStreamContext *sc = s->streams[0]->priv_data;
00843         ul = mxf_essence_container_uls[sc->index].container_ul;
00844     }
00845     avio_write(pb, ul, 16);
00846 
00847     // write sub descriptor refs
00848     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
00849     mxf_write_refs_count(pb, s->nb_streams);
00850     for (i = 0; i < s->nb_streams; i++)
00851         mxf_write_uuid(pb, SubDescriptor, i);
00852 }
00853 
00854 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00855 {
00856     MXFContext *mxf = s->priv_data;
00857     MXFStreamContext *sc = st->priv_data;
00858     AVIOContext *pb = s->pb;
00859 
00860     avio_write(pb, key, 16);
00861     klv_encode_ber4_length(pb, size+20+8+12+20);
00862 
00863     mxf_write_local_tag(pb, 16, 0x3C0A);
00864     mxf_write_uuid(pb, SubDescriptor, st->index);
00865 
00866     mxf_write_local_tag(pb, 4, 0x3006);
00867     avio_wb32(pb, st->index+2);
00868 
00869     mxf_write_local_tag(pb, 8, 0x3001);
00870     avio_wb32(pb, mxf->time_base.den);
00871     avio_wb32(pb, mxf->time_base.num);
00872 
00873     mxf_write_local_tag(pb, 16, 0x3004);
00874     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
00875 }
00876 
00877 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
00878 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
00879 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
00880 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
00881 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
00882 
00883 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00884 {
00885     MXFStreamContext *sc = st->priv_data;
00886     AVIOContext *pb = s->pb;
00887     int stored_height = (st->codec->height+15)/16*16;
00888     int display_height;
00889     int f1, f2;
00890     unsigned desc_size = size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20;
00891     if (sc->interlaced && sc->field_dominance)
00892         desc_size += 5;
00893 
00894     mxf_write_generic_desc(s, st, key, desc_size);
00895 
00896     mxf_write_local_tag(pb, 4, 0x3203);
00897     avio_wb32(pb, st->codec->width);
00898 
00899     mxf_write_local_tag(pb, 4, 0x3202);
00900     avio_wb32(pb, stored_height>>sc->interlaced);
00901 
00902     mxf_write_local_tag(pb, 4, 0x3209);
00903     avio_wb32(pb, st->codec->width);
00904 
00905     if (st->codec->height == 608) // PAL + VBI
00906         display_height = 576;
00907     else if (st->codec->height == 512)  // NTSC + VBI
00908         display_height = 486;
00909     else
00910         display_height = st->codec->height;
00911 
00912     mxf_write_local_tag(pb, 4, 0x3208);
00913     avio_wb32(pb, display_height>>sc->interlaced);
00914 
00915     // component depth
00916     mxf_write_local_tag(pb, 4, 0x3301);
00917     avio_wb32(pb, sc->component_depth);
00918 
00919     // horizontal subsampling
00920     mxf_write_local_tag(pb, 4, 0x3302);
00921     avio_wb32(pb, 2);
00922 
00923     // frame layout
00924     mxf_write_local_tag(pb, 1, 0x320C);
00925     avio_w8(pb, sc->interlaced);
00926 
00927     // video line map
00928     switch (st->codec->height) {
00929     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
00930     case  608: f1 =  7; f2 = 320; break;
00931     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
00932     case  512: f1 =  7; f2 = 270; break;
00933     case  720: f1 = 26; f2 =   0; break; // progressive
00934     case 1080: f1 = 21; f2 = 584; break;
00935     default:   f1 =  0; f2 =   0; break;
00936     }
00937 
00938     if (!sc->interlaced) {
00939         f2  = 0;
00940         f1 *= 2;
00941     }
00942 
00943     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
00944     avio_wb32(pb, sc->interlaced ? 2 : 1);
00945     avio_wb32(pb, 4);
00946     avio_wb32(pb, f1);
00947     if (sc->interlaced)
00948         avio_wb32(pb, f2);
00949 
00950     mxf_write_local_tag(pb, 8, 0x320E);
00951     avio_wb32(pb, sc->aspect_ratio.num);
00952     avio_wb32(pb, sc->aspect_ratio.den);
00953 
00954     mxf_write_local_tag(pb, 16, 0x3201);
00955     avio_write(pb, *sc->codec_ul, 16);
00956 
00957     if (sc->interlaced && sc->field_dominance) {
00958         mxf_write_local_tag(pb, 1, 0x3212);
00959         avio_w8(pb, sc->field_dominance);
00960     }
00961 
00962 }
00963 
00964 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
00965 {
00966     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
00967 }
00968 
00969 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
00970 {
00971     AVIOContext *pb = s->pb;
00972     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
00973 
00974     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
00975 
00976     // bit rate
00977     mxf_write_local_tag(pb, 4, 0x8000);
00978     avio_wb32(pb, st->codec->bit_rate);
00979 
00980     // profile and level
00981     mxf_write_local_tag(pb, 1, 0x8007);
00982     if (!st->codec->profile)
00983         profile_and_level |= 0x80; // escape bit
00984     avio_w8(pb, profile_and_level);
00985 }
00986 
00987 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00988 {
00989     AVIOContext *pb = s->pb;
00990 
00991     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
00992 
00993     // audio locked
00994     mxf_write_local_tag(pb, 1, 0x3D02);
00995     avio_w8(pb, 1);
00996 
00997     // write audio sampling rate
00998     mxf_write_local_tag(pb, 8, 0x3D03);
00999     avio_wb32(pb, st->codec->sample_rate);
01000     avio_wb32(pb, 1);
01001 
01002     mxf_write_local_tag(pb, 4, 0x3D07);
01003     avio_wb32(pb, st->codec->channels);
01004 
01005     mxf_write_local_tag(pb, 4, 0x3D01);
01006     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
01007 }
01008 
01009 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
01010 {
01011     AVIOContext *pb = s->pb;
01012 
01013     mxf_write_generic_sound_common(s, st, key, size+6+8);
01014 
01015     mxf_write_local_tag(pb, 2, 0x3D0A);
01016     avio_wb16(pb, st->codec->block_align);
01017 
01018     // avg bytes per sec
01019     mxf_write_local_tag(pb, 4, 0x3D09);
01020     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
01021 }
01022 
01023 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
01024 {
01025     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
01026 }
01027 
01028 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
01029 {
01030     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
01031 }
01032 
01033 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
01034 {
01035     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
01036 }
01037 
01038 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
01039 {
01040     MXFContext *mxf = s->priv_data;
01041     AVIOContext *pb = s->pb;
01042     int i, track_count = s->nb_streams+1;
01043 
01044     if (type == MaterialPackage) {
01045         mxf_write_metadata_key(pb, 0x013600);
01046         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
01047         klv_encode_ber_length(pb, 92 + 16*track_count);
01048     } else {
01049         mxf_write_metadata_key(pb, 0x013700);
01050         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
01051         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
01052     }
01053 
01054     // write uid
01055     mxf_write_local_tag(pb, 16, 0x3C0A);
01056     mxf_write_uuid(pb, type, 0);
01057     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
01058     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
01059 
01060     // write package umid
01061     mxf_write_local_tag(pb, 32, 0x4401);
01062     mxf_write_umid(s, type == SourcePackage);
01063     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
01064 
01065     // package creation date
01066     mxf_write_local_tag(pb, 8, 0x4405);
01067     avio_wb64(pb, mxf->timestamp);
01068 
01069     // package modified date
01070     mxf_write_local_tag(pb, 8, 0x4404);
01071     avio_wb64(pb, mxf->timestamp);
01072 
01073     // write track refs
01074     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
01075     mxf_write_refs_count(pb, track_count);
01076     mxf_write_uuid(pb, type == MaterialPackage ? Track :
01077                    Track + TypeBottom, -1); // timecode track
01078     for (i = 0; i < s->nb_streams; i++)
01079         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
01080 
01081     // write multiple descriptor reference
01082     if (type == SourcePackage) {
01083         mxf_write_local_tag(pb, 16, 0x4701);
01084         if (s->nb_streams > 1) {
01085             mxf_write_uuid(pb, MultipleDescriptor, 0);
01086             mxf_write_multi_descriptor(s);
01087         } else
01088             mxf_write_uuid(pb, SubDescriptor, 0);
01089     }
01090 
01091     // write timecode track
01092     mxf_write_track(s, mxf->timecode_track, type);
01093     mxf_write_sequence(s, mxf->timecode_track, type);
01094     mxf_write_timecode_component(s, mxf->timecode_track, type);
01095 
01096     for (i = 0; i < s->nb_streams; i++) {
01097         AVStream *st = s->streams[i];
01098         mxf_write_track(s, st, type);
01099         mxf_write_sequence(s, st, type);
01100         mxf_write_structural_component(s, st, type);
01101 
01102         if (type == SourcePackage) {
01103             MXFStreamContext *sc = st->priv_data;
01104             mxf_essence_container_uls[sc->index].write_desc(s, st);
01105         }
01106     }
01107 }
01108 
01109 static int mxf_write_essence_container_data(AVFormatContext *s)
01110 {
01111     AVIOContext *pb = s->pb;
01112 
01113     mxf_write_metadata_key(pb, 0x012300);
01114     klv_encode_ber_length(pb, 72);
01115 
01116     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
01117     mxf_write_uuid(pb, EssenceContainerData, 0);
01118 
01119     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
01120     mxf_write_umid(s, 1);
01121 
01122     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
01123     avio_wb32(pb, 1);
01124 
01125     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
01126     avio_wb32(pb, 2);
01127 
01128     return 0;
01129 }
01130 
01131 static int mxf_write_header_metadata_sets(AVFormatContext *s)
01132 {
01133     mxf_write_preface(s);
01134     mxf_write_identification(s);
01135     mxf_write_content_storage(s);
01136     mxf_write_package(s, MaterialPackage);
01137     mxf_write_package(s, SourcePackage);
01138     mxf_write_essence_container_data(s);
01139     return 0;
01140 }
01141 
01142 static unsigned klv_fill_size(uint64_t size)
01143 {
01144     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
01145     if (pad < 20) // smallest fill item possible
01146         return pad + KAG_SIZE;
01147     else
01148         return pad & (KAG_SIZE-1);
01149 }
01150 
01151 static void mxf_write_index_table_segment(AVFormatContext *s)
01152 {
01153     MXFContext *mxf = s->priv_data;
01154     AVIOContext *pb = s->pb;
01155     int i, j, temporal_reordering = 0;
01156     int key_index = mxf->last_key_index;
01157 
01158     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
01159 
01160     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
01161         return;
01162 
01163     avio_write(pb, index_table_segment_key, 16);
01164 
01165     if (mxf->edit_unit_byte_count) {
01166         klv_encode_ber_length(pb, 80);
01167     } else {
01168         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
01169                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
01170     }
01171 
01172     // instance id
01173     mxf_write_local_tag(pb, 16, 0x3C0A);
01174     mxf_write_uuid(pb, IndexTableSegment, 0);
01175 
01176     // index edit rate
01177     mxf_write_local_tag(pb, 8, 0x3F0B);
01178     avio_wb32(pb, mxf->time_base.den);
01179     avio_wb32(pb, mxf->time_base.num);
01180 
01181     // index start position
01182     mxf_write_local_tag(pb, 8, 0x3F0C);
01183     avio_wb64(pb, mxf->last_indexed_edit_unit);
01184 
01185     // index duration
01186     mxf_write_local_tag(pb, 8, 0x3F0D);
01187     if (mxf->edit_unit_byte_count)
01188         avio_wb64(pb, 0); // index table covers whole container
01189     else
01190         avio_wb64(pb, mxf->edit_units_count);
01191 
01192     // edit unit byte count
01193     mxf_write_local_tag(pb, 4, 0x3F05);
01194     avio_wb32(pb, mxf->edit_unit_byte_count);
01195 
01196     // index sid
01197     mxf_write_local_tag(pb, 4, 0x3F06);
01198     avio_wb32(pb, 2);
01199 
01200     // body sid
01201     mxf_write_local_tag(pb, 4, 0x3F07);
01202     avio_wb32(pb, 1);
01203 
01204     if (!mxf->edit_unit_byte_count) {
01205         // real slice count - 1
01206         mxf_write_local_tag(pb, 1, 0x3F08);
01207         avio_w8(pb, mxf->slice_count);
01208 
01209         // delta entry array
01210         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
01211         avio_wb32(pb, s->nb_streams+1); // num of entries
01212         avio_wb32(pb, 6);               // size of one entry
01213         // write system item delta entry
01214         avio_w8(pb, 0);
01215         avio_w8(pb, 0); // slice entry
01216         avio_wb32(pb, 0); // element delta
01217         for (i = 0; i < s->nb_streams; i++) {
01218             AVStream *st = s->streams[i];
01219             MXFStreamContext *sc = st->priv_data;
01220             avio_w8(pb, sc->temporal_reordering);
01221             if (sc->temporal_reordering)
01222                 temporal_reordering = 1;
01223             if (i == 0) { // video track
01224                 avio_w8(pb, 0); // slice number
01225                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
01226             } else { // audio track
01227                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
01228                 audio_frame_size += klv_fill_size(audio_frame_size);
01229                 avio_w8(pb, 1);
01230                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
01231             }
01232         }
01233 
01234         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
01235         avio_wb32(pb, mxf->edit_units_count);  // num of entries
01236         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
01237 
01238         for (i = 0; i < mxf->edit_units_count; i++) {
01239             int temporal_offset = 0;
01240 
01241             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
01242                 mxf->last_key_index = key_index;
01243                 key_index = i;
01244             }
01245 
01246             if (temporal_reordering) {
01247                 int pic_num_in_gop = i - key_index;
01248                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
01249                     for (j = key_index; j < mxf->edit_units_count; j++) {
01250                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
01251                             break;
01252                     }
01253                     if (j == mxf->edit_units_count)
01254                         av_log(s, AV_LOG_WARNING, "missing frames\n");
01255                     temporal_offset = j - key_index - pic_num_in_gop;
01256                 }
01257             }
01258             avio_w8(pb, temporal_offset);
01259 
01260             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
01261                 avio_w8(pb, mxf->last_key_index - i);
01262             } else {
01263                 avio_w8(pb, key_index - i); // key frame offset
01264                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
01265                     mxf->last_key_index = key_index;
01266             }
01267 
01268             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
01269                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
01270                 mxf->index_entries[i].flags |= 0x80; // random access
01271             avio_w8(pb, mxf->index_entries[i].flags);
01272             // stream offset
01273             avio_wb64(pb, mxf->index_entries[i].offset);
01274             if (s->nb_streams > 1)
01275                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
01276         }
01277 
01278         mxf->last_key_index = key_index - mxf->edit_units_count;
01279         mxf->last_indexed_edit_unit += mxf->edit_units_count;
01280         mxf->edit_units_count = 0;
01281     }
01282 }
01283 
01284 static void mxf_write_klv_fill(AVFormatContext *s)
01285 {
01286     unsigned pad = klv_fill_size(avio_tell(s->pb));
01287     if (pad) {
01288         avio_write(s->pb, klv_fill_key, 16);
01289         pad -= 16 + 4;
01290         klv_encode_ber4_length(s->pb, pad);
01291         for (; pad; pad--)
01292             avio_w8(s->pb, 0);
01293         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
01294     }
01295 }
01296 
01297 static void mxf_write_partition(AVFormatContext *s, int bodysid,
01298                                 int indexsid,
01299                                 const uint8_t *key, int write_metadata)
01300 {
01301     MXFContext *mxf = s->priv_data;
01302     AVIOContext *pb = s->pb;
01303     int64_t header_byte_count_offset;
01304     unsigned index_byte_count = 0;
01305     uint64_t partition_offset = avio_tell(pb);
01306 
01307     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
01308         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
01309             12+mxf->edit_units_count*(11+mxf->slice_count*4);
01310     else if (mxf->edit_unit_byte_count && indexsid)
01311         index_byte_count = 80;
01312 
01313     if (index_byte_count) {
01314         // add encoded ber length
01315         index_byte_count += 16 + klv_ber_length(index_byte_count);
01316         index_byte_count += klv_fill_size(index_byte_count);
01317     }
01318 
01319     if (!memcmp(key, body_partition_key, 16)) {
01320         mxf->body_partition_offset =
01321             av_realloc(mxf->body_partition_offset,
01322                        (mxf->body_partitions_count+1)*
01323                        sizeof(*mxf->body_partition_offset));
01324         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
01325     }
01326 
01327     // write klv
01328     avio_write(pb, key, 16);
01329     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
01330 
01331     // write partition value
01332     avio_wb16(pb, 1); // majorVersion
01333     avio_wb16(pb, 2); // minorVersion
01334     avio_wb32(pb, KAG_SIZE); // KAGSize
01335 
01336     avio_wb64(pb, partition_offset); // ThisPartition
01337 
01338     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
01339         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
01340     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
01341         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
01342     else
01343         avio_wb64(pb, 0);
01344 
01345     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
01346 
01347     // set offset
01348     header_byte_count_offset = avio_tell(pb);
01349     avio_wb64(pb, 0); // headerByteCount, update later
01350 
01351     // indexTable
01352     avio_wb64(pb, index_byte_count); // indexByteCount
01353     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
01354 
01355     // BodyOffset
01356     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
01357         avio_wb64(pb, mxf->body_offset);
01358     } else
01359         avio_wb64(pb, 0);
01360 
01361     avio_wb32(pb, bodysid); // bodySID
01362 
01363     // operational pattern
01364     avio_write(pb, op1a_ul, 16);
01365 
01366     // essence container
01367     mxf_write_essence_container_refs(s);
01368 
01369     if (write_metadata) {
01370         // mark the start of the headermetadata and calculate metadata size
01371         int64_t pos, start;
01372         unsigned header_byte_count;
01373 
01374         mxf_write_klv_fill(s);
01375         start = avio_tell(s->pb);
01376         mxf_write_primer_pack(s);
01377         mxf_write_header_metadata_sets(s);
01378         pos = avio_tell(s->pb);
01379         header_byte_count = pos - start + klv_fill_size(pos);
01380 
01381         // update header_byte_count
01382         avio_seek(pb, header_byte_count_offset, SEEK_SET);
01383         avio_wb64(pb, header_byte_count);
01384         avio_seek(pb, pos, SEEK_SET);
01385     }
01386 
01387     avio_flush(pb);
01388 }
01389 
01390 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
01391 AVPacket *pkt)
01392 {
01393     MXFContext *mxf = s->priv_data;
01394     MXFStreamContext *sc = st->priv_data;
01395     int i, cid;
01396     uint8_t* header_cid;
01397     unsigned int frame_size = 0;
01398 
01399     if (mxf->header_written)
01400         return 1;
01401 
01402     if (pkt->size < 43)
01403         return -1;
01404 
01405     header_cid = pkt->data + 0x28;
01406     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
01407 
01408     if ((i = ff_dnxhd_get_cid_table(cid)) < 0)
01409         return -1;
01410 
01411     switch (cid) {
01412     case 1235:
01413         sc->index = 24;
01414         sc->component_depth = 10;
01415         break;
01416     case 1237:
01417         sc->index = 25;
01418         break;
01419     case 1238:
01420         sc->index = 26;
01421         break;
01422     case 1241:
01423         sc->index = 27;
01424         sc->component_depth = 10;
01425         break;
01426     case 1242:
01427         sc->index = 28;
01428         break;
01429     case 1243:
01430         sc->index = 29;
01431         break;
01432     case 1250:
01433         sc->index = 30;
01434         sc->component_depth = 10;
01435         break;
01436     case 1251:
01437         sc->index = 31;
01438         break;
01439     case 1252:
01440         sc->index = 32;
01441         break;
01442     case 1253:
01443         sc->index = 33;
01444         break;
01445     default:
01446         return -1;
01447     }
01448 
01449     frame_size = ff_dnxhd_cid_table[i].frame_size;
01450     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
01451     sc->aspect_ratio = (AVRational){ 16, 9 };
01452 
01453     mxf->edit_unit_byte_count = KAG_SIZE;
01454     for (i = 0; i < s->nb_streams; i++) {
01455         AVStream *st = s->streams[i];
01456         MXFStreamContext *sc = st->priv_data;
01457         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
01458             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
01459             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01460         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01461             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
01462             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01463         }
01464     }
01465 
01466     return 1;
01467 }
01468 
01469 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01470 {
01471     MXFContext *mxf = s->priv_data;
01472     MXFStreamContext *sc = st->priv_data;
01473     uint8_t *vs_pack, *vsc_pack;
01474     int i, ul_index, frame_size, stype, pal;
01475 
01476     if (mxf->header_written)
01477         return 1;
01478 
01479     // Check for minimal frame size
01480     if (pkt->size < 120000)
01481         return -1;
01482 
01483     vs_pack  = pkt->data + 80*5 + 48;
01484     vsc_pack = pkt->data + 80*5 + 53;
01485     stype    = vs_pack[3] & 0x1f;
01486     pal      = (vs_pack[3] >> 5) & 0x1;
01487 
01488     if ((vs_pack[2] & 0x07) == 0x02)
01489         sc->aspect_ratio = (AVRational){ 16, 9 };
01490     else
01491         sc->aspect_ratio = (AVRational){ 4, 3 };
01492 
01493     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
01494     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
01495     // and set field dominance accordingly
01496     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
01497 
01498     switch (stype) {
01499     case 0x18: // DV100 720p
01500         ul_index = 6 + pal;
01501         frame_size = pal ? 288000 : 240000;
01502         if (sc->interlaced) {
01503             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
01504             sc->interlaced = 0;
01505         }
01506         break;
01507     case 0x14: // DV100 1080i
01508         ul_index = 4 + pal;
01509         frame_size = pal ? 576000 : 480000;
01510         break;
01511     case 0x04: // DV50
01512         ul_index = 2 + pal;
01513         frame_size = pal ? 288000 : 240000;
01514         break;
01515     default: // DV25
01516         ul_index = 0 + pal;
01517         frame_size = pal ? 144000 : 120000;
01518     }
01519 
01520     sc->index = ul_index + 16;
01521     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
01522 
01523     mxf->edit_unit_byte_count = KAG_SIZE;
01524     for (i = 0; i < s->nb_streams; i++) {
01525         AVStream *st = s->streams[i];
01526         MXFStreamContext *sc = st->priv_data;
01527         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
01528             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
01529             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01530         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01531             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
01532             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01533         }
01534     }
01535 
01536     return 1;
01537 }
01538 
01539 static const UID mxf_mpeg2_codec_uls[] = {
01540     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
01541     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
01542     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
01543     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
01544     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
01545     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
01546     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
01547     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
01548     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
01549     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
01550 };
01551 
01552 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
01553 {
01554     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
01555 
01556     if (avctx->profile == 4) { // Main
01557         if (avctx->level == 8) // Main
01558             return &mxf_mpeg2_codec_uls[0+long_gop];
01559         else if (avctx->level == 4) // High
01560             return &mxf_mpeg2_codec_uls[4+long_gop];
01561         else if (avctx->level == 6) // High 14
01562             return &mxf_mpeg2_codec_uls[8+long_gop];
01563     } else if (avctx->profile == 0) { // 422
01564         if (avctx->level == 5) // Main
01565             return &mxf_mpeg2_codec_uls[2+long_gop];
01566         else if (avctx->level == 2) // High
01567             return &mxf_mpeg2_codec_uls[6+long_gop];
01568     }
01569     return NULL;
01570 }
01571 
01572 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
01573                                  AVPacket *pkt, MXFIndexEntry *e)
01574 {
01575     MXFStreamContext *sc = st->priv_data;
01576     uint32_t c = -1;
01577     int i;
01578 
01579     for(i = 0; i < pkt->size - 4; i++) {
01580         c = (c<<8) + pkt->data[i];
01581         if (c == 0x1b5) {
01582             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
01583                 st->codec->profile = pkt->data[i+1] & 0x07;
01584                 st->codec->level   = pkt->data[i+2] >> 4;
01585             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
01586                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
01587                 if (sc->interlaced)
01588                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
01589                 break;
01590             }
01591         } else if (c == 0x1b8) { // gop
01592             if (pkt->data[i+4]>>6 & 0x01) { // closed
01593                 sc->closed_gop = 1;
01594                 if (e->flags & 0x40) // sequence header present
01595                     e->flags |= 0x80; // random access
01596             }
01597         } else if (c == 0x1b3) { // seq
01598             e->flags |= 0x40;
01599             switch ((pkt->data[i+4]>>4) & 0xf) {
01600             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
01601             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
01602             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
01603             default:
01604                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
01605                           st->codec->width, st->codec->height, 1024*1024);
01606             }
01607         } else if (c == 0x100) { // pic
01608             int pict_type = (pkt->data[i+2]>>3) & 0x07;
01609             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
01610             if (pict_type == 2) { // P frame
01611                 e->flags |= 0x22;
01612                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
01613             } else if (pict_type == 3) { // B frame
01614                 if (sc->closed_gop)
01615                     e->flags |= 0x13; // only backward prediction
01616                 else
01617                     e->flags |= 0x33;
01618                 sc->temporal_reordering = -1;
01619             } else if (!pict_type) {
01620                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
01621                 return 0;
01622             }
01623         }
01624     }
01625     if (s->oformat != &ff_mxf_d10_muxer)
01626         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
01627     return !!sc->codec_ul;
01628 }
01629 
01630 static uint64_t mxf_parse_timestamp(time_t timestamp)
01631 {
01632     struct tm *time = gmtime(&timestamp);
01633     if (!time)
01634         return 0;
01635     return (uint64_t)(time->tm_year+1900) << 48 |
01636            (uint64_t)(time->tm_mon+1)     << 40 |
01637            (uint64_t) time->tm_mday       << 32 |
01638                       time->tm_hour       << 24 |
01639                       time->tm_min        << 16 |
01640                       time->tm_sec        << 8;
01641 }
01642 
01643 static void mxf_gen_umid(AVFormatContext *s)
01644 {
01645     MXFContext *mxf = s->priv_data;
01646     uint32_t seed = av_get_random_seed();
01647     uint64_t umid = seed + 0x5294713400000000LL;
01648 
01649     AV_WB64(mxf->umid  , umid);
01650     AV_WB64(mxf->umid+8, umid>>8);
01651 
01652     mxf->instance_number = seed;
01653 }
01654 
01655 static int mxf_write_header(AVFormatContext *s)
01656 {
01657     MXFContext *mxf = s->priv_data;
01658     int i, ret;
01659     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
01660     const MXFSamplesPerFrame *spf = NULL;
01661     AVDictionaryEntry *t;
01662     int64_t timestamp = 0;
01663     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
01664 
01665     if (!s->nb_streams)
01666         return -1;
01667 
01668     for (i = 0; i < s->nb_streams; i++) {
01669         AVStream *st = s->streams[i];
01670         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
01671         if (!sc)
01672             return AVERROR(ENOMEM);
01673         st->priv_data = sc;
01674 
01675         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {
01676             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
01677             return -1;
01678         }
01679 
01680         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01681             AVRational rate, tbc = st->codec->time_base;
01682             // Default component depth to 8
01683             sc->component_depth = 8;
01684             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
01685             spf = ff_mxf_get_samples_per_frame(s, tbc);
01686             if (!spf) {
01687                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
01688                        tbc.den, tbc.num);
01689                 return AVERROR(EINVAL);
01690             }
01691             mxf->time_base = spf->time_base;
01692             rate = av_inv_q(mxf->time_base);
01693             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
01694             if (!tcr)
01695                 tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
01696             if (tcr)
01697                 ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
01698             else
01699                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);
01700             if (ret < 0)
01701                 return ret;
01702             if (s->oformat == &ff_mxf_d10_muxer) {
01703                 if (st->codec->bit_rate == 50000000)
01704                     if (mxf->time_base.den == 25) sc->index = 3;
01705                     else                          sc->index = 5;
01706                 else if (st->codec->bit_rate == 40000000)
01707                     if (mxf->time_base.den == 25) sc->index = 7;
01708                     else                          sc->index = 9;
01709                 else if (st->codec->bit_rate == 30000000)
01710                     if (mxf->time_base.den == 25) sc->index = 11;
01711                     else                          sc->index = 13;
01712                 else {
01713                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
01714                     return -1;
01715                 }
01716 
01717                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
01718                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
01719                     mxf->time_base.num / (8*mxf->time_base.den);
01720                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01721                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
01722                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01723             }
01724         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
01725             if (st->codec->sample_rate != 48000) {
01726                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
01727                 return -1;
01728             }
01729             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
01730             if (s->oformat == &ff_mxf_d10_muxer) {
01731                 if (st->index != 1) {
01732                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
01733                     return -1;
01734                 }
01735                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
01736                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
01737                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
01738                 }
01739                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
01740             } else
01741             mxf->slice_count = 1;
01742         }
01743 
01744         if (!sc->index) {
01745             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
01746             if (sc->index == -1) {
01747                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
01748                        "codec not currently supported in container\n", i);
01749                 return -1;
01750             }
01751         }
01752 
01753         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
01754 
01755         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
01756         sc->track_essence_element_key[15] = present[sc->index];
01757         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
01758 
01759         if (!present[sc->index])
01760             mxf->essence_container_count++;
01761         present[sc->index]++;
01762     }
01763 
01764     if (s->oformat == &ff_mxf_d10_muxer) {
01765         mxf->essence_container_count = 1;
01766     }
01767 
01768     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
01769         mxf_gen_umid(s);
01770 
01771     for (i = 0; i < s->nb_streams; i++) {
01772         MXFStreamContext *sc = s->streams[i]->priv_data;
01773         // update element count
01774         sc->track_essence_element_key[13] = present[sc->index];
01775         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
01776             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
01777         else
01778             sc->order = AV_RB32(sc->track_essence_element_key+12);
01779     }
01780 
01781     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
01782         timestamp = ff_iso8601_to_unix_time(t->value);
01783     if (timestamp)
01784         mxf->timestamp = mxf_parse_timestamp(timestamp);
01785     mxf->duration = -1;
01786 
01787     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
01788     if (!mxf->timecode_track)
01789         return AVERROR(ENOMEM);
01790     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
01791     if (!mxf->timecode_track->priv_data)
01792         return AVERROR(ENOMEM);
01793     mxf->timecode_track->index = -1;
01794 
01795     if (!spf)
01796         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
01797 
01798     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
01799         return -1;
01800 
01801     return 0;
01802 }
01803 
01804 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
01805 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 };
01806 
01807 static void mxf_write_system_item(AVFormatContext *s)
01808 {
01809     MXFContext *mxf = s->priv_data;
01810     AVIOContext *pb = s->pb;
01811     unsigned frame;
01812     uint32_t time_code;
01813 
01814     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
01815 
01816     // write system metadata pack
01817     avio_write(pb, system_metadata_pack_key, 16);
01818     klv_encode_ber4_length(pb, 57);
01819     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
01820     avio_w8(pb, 0x04); // content package rate
01821     avio_w8(pb, 0x00); // content package type
01822     avio_wb16(pb, 0x00); // channel handle
01823     avio_wb16(pb, mxf->tc.start + frame); // continuity count
01824     if (mxf->essence_container_count > 1)
01825         avio_write(pb, multiple_desc_ul, 16);
01826     else {
01827         MXFStreamContext *sc = s->streams[0]->priv_data;
01828         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
01829     }
01830     avio_w8(pb, 0);
01831     avio_wb64(pb, 0);
01832     avio_wb64(pb, 0); // creation date/time stamp
01833 
01834     avio_w8(pb, 0x81); // SMPTE 12M time code
01835     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
01836     avio_wb32(pb, time_code);
01837     avio_wb32(pb, 0); // binary group data
01838     avio_wb64(pb, 0);
01839 
01840     // write system metadata package set
01841     avio_write(pb, system_metadata_package_set_key, 16);
01842     klv_encode_ber4_length(pb, 35);
01843     avio_w8(pb, 0x83); // UMID
01844     avio_wb16(pb, 0x20);
01845     mxf_write_umid(s, 1);
01846 }
01847 
01848 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01849 {
01850     MXFContext *mxf = s->priv_data;
01851     AVIOContext *pb = s->pb;
01852     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
01853         (8*mxf->time_base.den); // frame size
01854     int pad;
01855 
01856     packet_size += 16 + 4;
01857     packet_size += klv_fill_size(packet_size);
01858 
01859     klv_encode_ber4_length(pb, pkt->size);
01860     avio_write(pb, pkt->data, pkt->size);
01861 
01862     // ensure CBR muxing by padding to correct video frame size
01863     pad = packet_size - pkt->size - 16 - 4;
01864     if (pad > 20) {
01865         avio_write(s->pb, klv_fill_key, 16);
01866         pad -= 16 + 4;
01867         klv_encode_ber4_length(s->pb, pad);
01868         for (; pad; pad--)
01869             avio_w8(s->pb, 0);
01870         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
01871     } else {
01872         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
01873         for (; pad > 0; pad--)
01874             avio_w8(s->pb, 0);
01875     }
01876 }
01877 
01878 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01879 {
01880     MXFContext *mxf = s->priv_data;
01881     AVIOContext *pb = s->pb;
01882     int frame_size = pkt->size / st->codec->block_align;
01883     uint8_t *samples = pkt->data;
01884     uint8_t *end = pkt->data + pkt->size;
01885     int i;
01886 
01887     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
01888 
01889     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
01890     avio_wl16(pb, frame_size);
01891     avio_w8(pb, (1<<st->codec->channels)-1);
01892 
01893     while (samples < end) {
01894         for (i = 0; i < st->codec->channels; i++) {
01895             uint32_t sample;
01896             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
01897                 sample = AV_RL24(samples)<< 4;
01898                 samples += 3;
01899             } else {
01900                 sample = AV_RL16(samples)<<12;
01901                 samples += 2;
01902             }
01903             avio_wl32(pb, sample | i);
01904         }
01905         for (; i < 8; i++)
01906             avio_wl32(pb, i);
01907     }
01908 }
01909 
01910 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
01911 {
01912     MXFContext *mxf = s->priv_data;
01913     AVIOContext *pb = s->pb;
01914     AVStream *st = s->streams[pkt->stream_index];
01915     MXFStreamContext *sc = st->priv_data;
01916     MXFIndexEntry ie = {0};
01917 
01918     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
01919         mxf->index_entries = av_realloc(mxf->index_entries,
01920             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
01921         if (!mxf->index_entries) {
01922             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
01923             return -1;
01924         }
01925     }
01926 
01927     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
01928         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
01929             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
01930             return -1;
01931         }
01932     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
01933         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
01934             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
01935             return -1;
01936         }
01937     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
01938         if (!mxf_parse_dv_frame(s, st, pkt)) {
01939             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
01940             return -1;
01941         }
01942     }
01943 
01944     if (!mxf->header_written) {
01945         if (mxf->edit_unit_byte_count) {
01946             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
01947             mxf_write_klv_fill(s);
01948             mxf_write_index_table_segment(s);
01949         } else {
01950             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
01951         }
01952         mxf->header_written = 1;
01953     }
01954 
01955     if (st->index == 0) {
01956         if (!mxf->edit_unit_byte_count &&
01957             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
01958             !(ie.flags & 0x33)) { // I frame, Gop start
01959             mxf_write_klv_fill(s);
01960             mxf_write_partition(s, 1, 2, body_partition_key, 0);
01961 
01962             mxf_write_klv_fill(s);
01963             mxf_write_index_table_segment(s);
01964         }
01965 
01966         mxf_write_klv_fill(s);
01967         mxf_write_system_item(s);
01968 
01969         if (!mxf->edit_unit_byte_count) {
01970             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
01971             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
01972             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
01973             mxf->body_offset += KAG_SIZE; // size of system element
01974         }
01975         mxf->edit_units_count++;
01976     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
01977         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
01978             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
01979     }
01980 
01981     mxf_write_klv_fill(s);
01982     avio_write(pb, sc->track_essence_element_key, 16); // write key
01983     if (s->oformat == &ff_mxf_d10_muxer) {
01984         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
01985             mxf_write_d10_video_packet(s, st, pkt);
01986         else
01987             mxf_write_d10_audio_packet(s, st, pkt);
01988     } else {
01989         klv_encode_ber4_length(pb, pkt->size); // write length
01990         avio_write(pb, pkt->data, pkt->size);
01991         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
01992     }
01993 
01994     avio_flush(pb);
01995 
01996     return 0;
01997 }
01998 
01999 static void mxf_write_random_index_pack(AVFormatContext *s)
02000 {
02001     MXFContext *mxf = s->priv_data;
02002     AVIOContext *pb = s->pb;
02003     uint64_t pos = avio_tell(pb);
02004     int i;
02005 
02006     avio_write(pb, random_index_pack_key, 16);
02007     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
02008 
02009     if (mxf->edit_unit_byte_count)
02010         avio_wb32(pb, 1); // BodySID of header partition
02011     else
02012         avio_wb32(pb, 0);
02013     avio_wb64(pb, 0); // offset of header partition
02014 
02015     for (i = 0; i < mxf->body_partitions_count; i++) {
02016         avio_wb32(pb, 1); // BodySID
02017         avio_wb64(pb, mxf->body_partition_offset[i]);
02018     }
02019 
02020     avio_wb32(pb, 0); // BodySID of footer partition
02021     avio_wb64(pb, mxf->footer_partition_offset);
02022 
02023     avio_wb32(pb, avio_tell(pb) - pos + 4);
02024 }
02025 
02026 static int mxf_write_footer(AVFormatContext *s)
02027 {
02028     MXFContext *mxf = s->priv_data;
02029     AVIOContext *pb = s->pb;
02030 
02031     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
02032 
02033     mxf_write_klv_fill(s);
02034     mxf->footer_partition_offset = avio_tell(pb);
02035     if (mxf->edit_unit_byte_count) { // no need to repeat index
02036         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
02037     } else {
02038         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
02039 
02040         mxf_write_klv_fill(s);
02041         mxf_write_index_table_segment(s);
02042     }
02043 
02044     mxf_write_klv_fill(s);
02045     mxf_write_random_index_pack(s);
02046 
02047     if (s->pb->seekable) {
02048         avio_seek(pb, 0, SEEK_SET);
02049         if (mxf->edit_unit_byte_count) {
02050             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
02051             mxf_write_klv_fill(s);
02052             mxf_write_index_table_segment(s);
02053         } else {
02054             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
02055         }
02056     }
02057 
02058     ff_audio_interleave_close(s);
02059 
02060     av_freep(&mxf->index_entries);
02061     av_freep(&mxf->body_partition_offset);
02062     av_freep(&mxf->timecode_track->priv_data);
02063     av_freep(&mxf->timecode_track);
02064 
02065     mxf_free(s);
02066 
02067     return 0;
02068 }
02069 
02070 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
02071 {
02072     int i, stream_count = 0;
02073 
02074     for (i = 0; i < s->nb_streams; i++)
02075         stream_count += !!s->streams[i]->last_in_packet_buffer;
02076 
02077     if (stream_count && (s->nb_streams == stream_count || flush)) {
02078         AVPacketList *pktl = s->packet_buffer;
02079         if (s->nb_streams != stream_count) {
02080             AVPacketList *last = NULL;
02081             // find last packet in edit unit
02082             while (pktl) {
02083                 if (!stream_count || pktl->pkt.stream_index == 0)
02084                     break;
02085                 last = pktl;
02086                 pktl = pktl->next;
02087                 stream_count--;
02088             }
02089             // purge packet queue
02090             while (pktl) {
02091                 AVPacketList *next = pktl->next;
02092 
02093                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
02094                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
02095                 av_free_packet(&pktl->pkt);
02096                 av_freep(&pktl);
02097                 pktl = next;
02098             }
02099             if (last)
02100                 last->next = NULL;
02101             else {
02102                 s->packet_buffer = NULL;
02103                 s->packet_buffer_end= NULL;
02104                 goto out;
02105             }
02106             pktl = s->packet_buffer;
02107         }
02108 
02109         *out = pktl->pkt;
02110         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
02111         s->packet_buffer = pktl->next;
02112         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
02113             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
02114         if(!s->packet_buffer)
02115             s->packet_buffer_end= NULL;
02116         av_freep(&pktl);
02117         return 1;
02118     } else {
02119     out:
02120         av_init_packet(out);
02121         return 0;
02122     }
02123 }
02124 
02125 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
02126 {
02127     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
02128     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
02129 
02130     return next->dts > pkt->dts ||
02131         (next->dts == pkt->dts && sc->order < sc2->order);
02132 }
02133 
02134 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
02135 {
02136     return ff_audio_rechunk_interleave(s, out, pkt, flush,
02137                                mxf_interleave_get_packet, mxf_compare_timestamps);
02138 }
02139 
02140 AVOutputFormat ff_mxf_muxer = {
02141     .name              = "mxf",
02142     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
02143     .mime_type         = "application/mxf",
02144     .extensions        = "mxf",
02145     .priv_data_size    = sizeof(MXFContext),
02146     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
02147     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
02148     .write_header      = mxf_write_header,
02149     .write_packet      = mxf_write_packet,
02150     .write_trailer     = mxf_write_footer,
02151     .flags             = AVFMT_NOTIMESTAMPS,
02152     .interleave_packet = mxf_interleave,
02153 };
02154 
02155 AVOutputFormat ff_mxf_d10_muxer = {
02156     .name              = "mxf_d10",
02157     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
02158     .mime_type         = "application/mxf",
02159     .priv_data_size    = sizeof(MXFContext),
02160     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
02161     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
02162     .write_header      = mxf_write_header,
02163     .write_packet      = mxf_write_packet,
02164     .write_trailer     = mxf_write_footer,
02165     .flags             = AVFMT_NOTIMESTAMPS,
02166     .interleave_packet = mxf_interleave,
02167 };