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 "libavcodec/bytestream.h"
00042 #include "audiointerleave.h"
00043 #include "avformat.h"
00044 #include "internal.h"
00045 #include "mxf.h"
00046 
00047 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
00048 static const int PAL_samples_per_frame[]  = { 1920, 0 };
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 temporal_reordering;
00075     AVRational aspect_ratio; 
00076     int closed_gop;          
00077 } MXFStreamContext;
00078 
00079 typedef struct {
00080     UID container_ul;
00081     UID element_ul;
00082     UID codec_ul;
00083     void (*write_desc)(AVFormatContext *, AVStream *);
00084 } MXFContainerEssenceEntry;
00085 
00086 static const struct {
00087     enum CodecID id;
00088     int index;
00089 } mxf_essence_mappings[] = {
00090     { CODEC_ID_MPEG2VIDEO, 0 },
00091     { CODEC_ID_PCM_S24LE,  1 },
00092     { CODEC_ID_PCM_S16LE,  1 },
00093     { CODEC_ID_NONE }
00094 };
00095 
00096 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
00097 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
00098 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
00099 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
00100 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
00101 
00102 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
00103     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
00104       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00105       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
00106       mxf_write_mpegvideo_desc },
00107     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
00108       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
00109       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00110       mxf_write_aes3_desc },
00111     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
00112       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
00113       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00114       mxf_write_wav_desc },
00115     // D-10 625/50 PAL 50mb/s
00116     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
00117       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00118       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
00119       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00122       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00123       mxf_write_generic_sound_desc },
00124     // D-10 525/60 NTSC 50mb/s
00125     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
00126       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
00128       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00131       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00132       mxf_write_generic_sound_desc },
00133     // D-10 625/50 PAL 40mb/s
00134     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
00135       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
00137       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00140       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00141       mxf_write_generic_sound_desc },
00142     // D-10 525/60 NTSC 40mb/s
00143     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
00144       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00145       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
00146       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00149       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00150       mxf_write_generic_sound_desc },
00151     // D-10 625/50 PAL 30mb/s
00152     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
00153       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00154       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
00155       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00158       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00159       mxf_write_generic_sound_desc },
00160     // D-10 525/60 NTSC 30mb/s
00161     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
00162       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00163       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
00164       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00167       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00168       mxf_write_generic_sound_desc },
00169     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00170       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00171       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00172       NULL },
00173 };
00174 
00175 typedef struct MXFContext {
00176     AVClass *av_class;
00177     int64_t footer_partition_offset;
00178     int essence_container_count;
00179     AVRational time_base;
00180     int header_written;
00181     MXFIndexEntry *index_entries;
00182     unsigned edit_units_count;
00183     uint64_t timestamp;   
00184     uint8_t slice_count;  
00185     int last_indexed_edit_unit;
00186     uint64_t *body_partition_offset;
00187     unsigned body_partitions_count;
00188     int last_key_index;  
00189     uint64_t duration;
00190     char *tc_opt_str;    
00191     AVTimecode tc;       
00192     AVStream *timecode_track;
00193     int timecode_base;       
00194     int edit_unit_byte_count; 
00195     uint64_t body_offset;
00196     uint32_t instance_number;
00197     uint8_t umid[16];        
00198 } MXFContext;
00199 
00200 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
00201 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
00202 
00206 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
00207 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
00208 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
00209 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
00210 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
00211 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
00212 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
00213 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
00214 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
00215 
00219 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
00220 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
00221 
00225 static const MXFLocalTagPair mxf_local_tag_batch[] = {
00226     // preface set
00227     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
00228     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
00229     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
00230     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
00231     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
00232     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
00233     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
00234     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
00235     // Identification
00236     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
00237     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
00238     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
00239     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
00240     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
00241     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
00242     // Content Storage
00243     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
00244     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
00245     // Essence Container Data
00246     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
00247     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
00248     // Package
00249     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
00250     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
00251     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
00252     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
00253     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
00254     // Track
00255     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
00256     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
00257     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
00258     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
00259     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
00260     // Sequence
00261     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
00262     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
00263     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
00264     // Source Clip
00265     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
00266     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
00267     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
00268     // Timecode Component
00269     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
00270     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
00271     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
00272     // File Descriptor
00273     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
00274     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
00275     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
00276     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
00277     // Generic Picture Essence Descriptor
00278     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
00279     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
00280     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
00281     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
00282     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
00283     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
00284     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
00285     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
00286     // CDCI Picture Essence Descriptor
00287     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
00288     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
00289     // Generic Sound Essence Descriptor
00290     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
00291     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
00292     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
00293     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
00294     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
00295     // Index Table Segment
00296     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
00297     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
00298     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
00299     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
00300     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
00301     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
00302     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
00303     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
00304     // MPEG video Descriptor
00305     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
00306     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
00307     // Wave Audio Essence Descriptor
00308     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
00309     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
00310 };
00311 
00312 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
00313 {
00314     avio_write(pb, uuid_base, 12);
00315     avio_wb16(pb, type);
00316     avio_wb16(pb, value);
00317 }
00318 
00319 static void mxf_write_umid(AVFormatContext *s, int type)
00320 {
00321     MXFContext *mxf = s->priv_data;
00322     avio_write(s->pb, umid_ul, 13);
00323     avio_wb24(s->pb, mxf->instance_number);
00324     avio_write(s->pb, mxf->umid, 15);
00325     avio_w8(s->pb, type);
00326 }
00327 
00328 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
00329 {
00330     avio_wb32(pb, ref_count);
00331     avio_wb32(pb, 16);
00332 }
00333 
00334 static int klv_ber_length(uint64_t len)
00335 {
00336     if (len < 128)
00337         return 1;
00338     else
00339         return (av_log2(len) >> 3) + 2;
00340 }
00341 
00342 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
00343 {
00344     // Determine the best BER size
00345     int size;
00346     if (len < 128) {
00347         //short form
00348         avio_w8(pb, len);
00349         return 1;
00350     }
00351 
00352     size = (av_log2(len) >> 3) + 1;
00353 
00354     // long form
00355     avio_w8(pb, 0x80 + size);
00356     while(size) {
00357         size--;
00358         avio_w8(pb, len >> 8 * size & 0xff);
00359     }
00360     return 0;
00361 }
00362 
00363 static void klv_encode_ber4_length(AVIOContext *pb, int len)
00364 {
00365     avio_w8(pb, 0x80 + 3);
00366     avio_wb24(pb, len);
00367 }
00368 
00369 /*
00370  * Get essence container ul index
00371  */
00372 static int mxf_get_essence_container_ul_index(enum CodecID id)
00373 {
00374     int i;
00375     for (i = 0; mxf_essence_mappings[i].id; i++)
00376         if (mxf_essence_mappings[i].id == id)
00377             return mxf_essence_mappings[i].index;
00378     return -1;
00379 }
00380 
00381 static void mxf_write_primer_pack(AVFormatContext *s)
00382 {
00383     AVIOContext *pb = s->pb;
00384     int local_tag_number, i = 0;
00385 
00386     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
00387 
00388     avio_write(pb, primer_pack_key, 16);
00389     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
00390 
00391     avio_wb32(pb, local_tag_number); // local_tag num
00392     avio_wb32(pb, 18); // item size, always 18 according to the specs
00393 
00394     for (i = 0; i < local_tag_number; i++) {
00395         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
00396         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
00397     }
00398 }
00399 
00400 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
00401 {
00402     avio_wb16(pb, tag);
00403     avio_wb16(pb, size);
00404 }
00405 
00406 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
00407 {
00408     avio_write(pb, header_metadata_key, 13);
00409     avio_wb24(pb, value);
00410 }
00411 
00412 static void mxf_free(AVFormatContext *s)
00413 {
00414     int i;
00415 
00416     for (i = 0; i < s->nb_streams; i++) {
00417         AVStream *st = s->streams[i];
00418         av_freep(&st->priv_data);
00419     }
00420 }
00421 
00422 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
00423 {
00424     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
00425     while (uls->uid[0]) {
00426         if (type == uls->id)
00427             break;
00428         uls++;
00429     }
00430     return uls;
00431 }
00432 
00433 static void mxf_write_essence_container_refs(AVFormatContext *s)
00434 {
00435     MXFContext *c = s->priv_data;
00436     AVIOContext *pb = s->pb;
00437     int i;
00438 
00439     mxf_write_refs_count(pb, c->essence_container_count);
00440     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
00441     for (i = 0; i < c->essence_container_count; i++) {
00442         MXFStreamContext *sc = s->streams[i]->priv_data;
00443         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
00444     }
00445 }
00446 
00447 static void mxf_write_preface(AVFormatContext *s)
00448 {
00449     MXFContext *mxf = s->priv_data;
00450     AVIOContext *pb = s->pb;
00451 
00452     mxf_write_metadata_key(pb, 0x012f00);
00453     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
00454     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
00455 
00456     // write preface set uid
00457     mxf_write_local_tag(pb, 16, 0x3C0A);
00458     mxf_write_uuid(pb, Preface, 0);
00459     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
00460 
00461     // last modified date
00462     mxf_write_local_tag(pb, 8, 0x3B02);
00463     avio_wb64(pb, mxf->timestamp);
00464 
00465     // write version
00466     mxf_write_local_tag(pb, 2, 0x3B05);
00467     avio_wb16(pb, 258); // v1.2
00468 
00469     // write identification_refs
00470     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
00471     mxf_write_refs_count(pb, 1);
00472     mxf_write_uuid(pb, Identification, 0);
00473 
00474     // write content_storage_refs
00475     mxf_write_local_tag(pb, 16, 0x3B03);
00476     mxf_write_uuid(pb, ContentStorage, 0);
00477 
00478     // operational pattern
00479     mxf_write_local_tag(pb, 16, 0x3B09);
00480     avio_write(pb, op1a_ul, 16);
00481 
00482     // write essence_container_refs
00483     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
00484     mxf_write_essence_container_refs(s);
00485 
00486     // write dm_scheme_refs
00487     mxf_write_local_tag(pb, 8, 0x3B0B);
00488     avio_wb64(pb, 0);
00489 }
00490 
00491 /*
00492  * Write a local tag containing an ascii string as utf-16
00493  */
00494 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
00495 {
00496     int i, size = strlen(value);
00497     mxf_write_local_tag(pb, size*2, tag);
00498     for (i = 0; i < size; i++)
00499         avio_wb16(pb, value[i]);
00500 }
00501 
00502 static void mxf_write_identification(AVFormatContext *s)
00503 {
00504     MXFContext *mxf = s->priv_data;
00505     AVIOContext *pb = s->pb;
00506     const char *company = "FFmpeg";
00507     const char *product = "OP1a Muxer";
00508     const char *version;
00509     int length;
00510 
00511     mxf_write_metadata_key(pb, 0x013000);
00512     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
00513 
00514     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
00515         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
00516     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
00517     klv_encode_ber_length(pb, length);
00518 
00519     // write uid
00520     mxf_write_local_tag(pb, 16, 0x3C0A);
00521     mxf_write_uuid(pb, Identification, 0);
00522     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
00523 
00524     // write generation uid
00525     mxf_write_local_tag(pb, 16, 0x3C09);
00526     mxf_write_uuid(pb, Identification, 1);
00527 
00528     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
00529     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
00530     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
00531 
00532     // write product uid
00533     mxf_write_local_tag(pb, 16, 0x3C05);
00534     mxf_write_uuid(pb, Identification, 2);
00535 
00536     // modification date
00537     mxf_write_local_tag(pb, 8, 0x3C06);
00538     avio_wb64(pb, mxf->timestamp);
00539 }
00540 
00541 static void mxf_write_content_storage(AVFormatContext *s)
00542 {
00543     AVIOContext *pb = s->pb;
00544 
00545     mxf_write_metadata_key(pb, 0x011800);
00546     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
00547     klv_encode_ber_length(pb, 92);
00548 
00549     // write uid
00550     mxf_write_local_tag(pb, 16, 0x3C0A);
00551     mxf_write_uuid(pb, ContentStorage, 0);
00552     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
00553 
00554     // write package reference
00555     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
00556     mxf_write_refs_count(pb, 2);
00557     mxf_write_uuid(pb, MaterialPackage, 0);
00558     mxf_write_uuid(pb, SourcePackage, 0);
00559 
00560     // write essence container data
00561     mxf_write_local_tag(pb, 8 + 16, 0x1902);
00562     mxf_write_refs_count(pb, 1);
00563     mxf_write_uuid(pb, EssenceContainerData, 0);
00564 }
00565 
00566 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00567 {
00568     MXFContext *mxf = s->priv_data;
00569     AVIOContext *pb = s->pb;
00570     MXFStreamContext *sc = st->priv_data;
00571 
00572     mxf_write_metadata_key(pb, 0x013b00);
00573     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
00574     klv_encode_ber_length(pb, 80);
00575 
00576     // write track uid
00577     mxf_write_local_tag(pb, 16, 0x3C0A);
00578     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
00579     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
00580 
00581     // write track id
00582     mxf_write_local_tag(pb, 4, 0x4801);
00583     avio_wb32(pb, st->index+2);
00584 
00585     // write track number
00586     mxf_write_local_tag(pb, 4, 0x4804);
00587     if (type == MaterialPackage)
00588         avio_wb32(pb, 0); // track number of material package is 0
00589     else
00590         avio_write(pb, sc->track_essence_element_key + 12, 4);
00591 
00592     mxf_write_local_tag(pb, 8, 0x4B01);
00593     avio_wb32(pb, mxf->time_base.den);
00594     avio_wb32(pb, mxf->time_base.num);
00595 
00596     // write origin
00597     mxf_write_local_tag(pb, 8, 0x4B02);
00598     avio_wb64(pb, 0);
00599 
00600     // write sequence refs
00601     mxf_write_local_tag(pb, 16, 0x4803);
00602     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
00603 }
00604 
00605 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 };
00606 
00607 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
00608 {
00609     MXFContext *mxf = s->priv_data;
00610     AVIOContext *pb = s->pb;
00611 
00612     // find data define uls
00613     mxf_write_local_tag(pb, 16, 0x0201);
00614     if (st == mxf->timecode_track)
00615         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
00616     else {
00617         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
00618         avio_write(pb, data_def_ul->uid, 16);
00619     }
00620 
00621     // write duration
00622     mxf_write_local_tag(pb, 8, 0x0202);
00623     avio_wb64(pb, mxf->duration);
00624 }
00625 
00626 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00627 {
00628     MXFContext *mxf = s->priv_data;
00629     AVIOContext *pb = s->pb;
00630     enum MXFMetadataSetType component;
00631 
00632     mxf_write_metadata_key(pb, 0x010f00);
00633     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
00634     klv_encode_ber_length(pb, 80);
00635 
00636     mxf_write_local_tag(pb, 16, 0x3C0A);
00637     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
00638 
00639     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
00640     mxf_write_common_fields(s, st);
00641 
00642     // write structural component
00643     mxf_write_local_tag(pb, 16 + 8, 0x1001);
00644     mxf_write_refs_count(pb, 1);
00645     if (st == mxf->timecode_track)
00646         component = TimecodeComponent;
00647     else
00648         component = SourceClip;
00649     if (type == SourcePackage)
00650         component += TypeBottom;
00651     mxf_write_uuid(pb, component, st->index);
00652 }
00653 
00654 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00655 {
00656     MXFContext *mxf = s->priv_data;
00657     AVIOContext *pb = s->pb;
00658 
00659     mxf_write_metadata_key(pb, 0x011400);
00660     klv_encode_ber_length(pb, 75);
00661 
00662     // UID
00663     mxf_write_local_tag(pb, 16, 0x3C0A);
00664     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
00665                    TimecodeComponent + TypeBottom, st->index);
00666 
00667     mxf_write_common_fields(s, st);
00668 
00669     // Start Time Code
00670     mxf_write_local_tag(pb, 8, 0x1501);
00671     avio_wb64(pb, mxf->tc.start);
00672 
00673     // Rounded Time Code Base
00674     mxf_write_local_tag(pb, 2, 0x1502);
00675     avio_wb16(pb, mxf->timecode_base);
00676 
00677     // Drop Frame
00678     mxf_write_local_tag(pb, 1, 0x1503);
00679     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
00680 }
00681 
00682 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00683 {
00684     AVIOContext *pb = s->pb;
00685     int i;
00686 
00687     mxf_write_metadata_key(pb, 0x011100);
00688     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
00689     klv_encode_ber_length(pb, 108);
00690 
00691     // write uid
00692     mxf_write_local_tag(pb, 16, 0x3C0A);
00693     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
00694 
00695     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
00696     mxf_write_common_fields(s, st);
00697 
00698     // write start_position
00699     mxf_write_local_tag(pb, 8, 0x1201);
00700     avio_wb64(pb, 0);
00701 
00702     // write source package uid, end of the reference
00703     mxf_write_local_tag(pb, 32, 0x1101);
00704     if (type == SourcePackage) {
00705         for (i = 0; i < 4; i++)
00706             avio_wb64(pb, 0);
00707     } else
00708         mxf_write_umid(s, 1);
00709 
00710     // write source track id
00711     mxf_write_local_tag(pb, 4, 0x1102);
00712     if (type == SourcePackage)
00713         avio_wb32(pb, 0);
00714     else
00715         avio_wb32(pb, st->index+2);
00716 }
00717 
00718 static void mxf_write_multi_descriptor(AVFormatContext *s)
00719 {
00720     MXFContext *mxf = s->priv_data;
00721     AVIOContext *pb = s->pb;
00722     const uint8_t *ul;
00723     int i;
00724 
00725     mxf_write_metadata_key(pb, 0x014400);
00726     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
00727     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
00728 
00729     mxf_write_local_tag(pb, 16, 0x3C0A);
00730     mxf_write_uuid(pb, MultipleDescriptor, 0);
00731     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
00732 
00733     // write sample rate
00734     mxf_write_local_tag(pb, 8, 0x3001);
00735     avio_wb32(pb, mxf->time_base.den);
00736     avio_wb32(pb, mxf->time_base.num);
00737 
00738     // write essence container ul
00739     mxf_write_local_tag(pb, 16, 0x3004);
00740     if (mxf->essence_container_count > 1)
00741         ul = multiple_desc_ul;
00742     else {
00743         MXFStreamContext *sc = s->streams[0]->priv_data;
00744         ul = mxf_essence_container_uls[sc->index].container_ul;
00745     }
00746     avio_write(pb, ul, 16);
00747 
00748     // write sub descriptor refs
00749     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
00750     mxf_write_refs_count(pb, s->nb_streams);
00751     for (i = 0; i < s->nb_streams; i++)
00752         mxf_write_uuid(pb, SubDescriptor, i);
00753 }
00754 
00755 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00756 {
00757     MXFContext *mxf = s->priv_data;
00758     MXFStreamContext *sc = st->priv_data;
00759     AVIOContext *pb = s->pb;
00760 
00761     avio_write(pb, key, 16);
00762     klv_encode_ber4_length(pb, size+20+8+12+20);
00763 
00764     mxf_write_local_tag(pb, 16, 0x3C0A);
00765     mxf_write_uuid(pb, SubDescriptor, st->index);
00766 
00767     mxf_write_local_tag(pb, 4, 0x3006);
00768     avio_wb32(pb, st->index+2);
00769 
00770     mxf_write_local_tag(pb, 8, 0x3001);
00771     avio_wb32(pb, mxf->time_base.den);
00772     avio_wb32(pb, mxf->time_base.num);
00773 
00774     mxf_write_local_tag(pb, 16, 0x3004);
00775     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
00776 }
00777 
00778 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
00779 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
00780 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
00781 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
00782 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
00783 
00784 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00785 {
00786     MXFStreamContext *sc = st->priv_data;
00787     AVIOContext *pb = s->pb;
00788     int stored_height = (st->codec->height+15)/16*16;
00789     int display_height;
00790     int f1, f2;
00791 
00792     mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
00793 
00794     mxf_write_local_tag(pb, 4, 0x3203);
00795     avio_wb32(pb, st->codec->width);
00796 
00797     mxf_write_local_tag(pb, 4, 0x3202);
00798     avio_wb32(pb, stored_height>>sc->interlaced);
00799 
00800     mxf_write_local_tag(pb, 4, 0x3209);
00801     avio_wb32(pb, st->codec->width);
00802 
00803     if (st->codec->height == 608) // PAL + VBI
00804         display_height = 576;
00805     else if (st->codec->height == 512)  // NTSC + VBI
00806         display_height = 486;
00807     else
00808         display_height = st->codec->height;
00809 
00810     mxf_write_local_tag(pb, 4, 0x3208);
00811     avio_wb32(pb, display_height>>sc->interlaced);
00812 
00813     // component depth
00814     mxf_write_local_tag(pb, 4, 0x3301);
00815     avio_wb32(pb, 8);
00816 
00817     // horizontal subsampling
00818     mxf_write_local_tag(pb, 4, 0x3302);
00819     avio_wb32(pb, 2);
00820 
00821     // frame layout
00822     mxf_write_local_tag(pb, 1, 0x320C);
00823     avio_w8(pb, sc->interlaced);
00824 
00825     // video line map
00826     switch (st->codec->height) {
00827     case  576: f1 = 23; f2 = 336; break;
00828     case  608: f1 =  7; f2 = 320; break;
00829     case  480: f1 = 20; f2 = 283; break;
00830     case  512: f1 =  7; f2 = 270; break;
00831     case  720: f1 = 26; f2 =   0; break; // progressive
00832     case 1080: f1 = 21; f2 = 584; break;
00833     default:   f1 =  0; f2 =   0; break;
00834     }
00835 
00836     if (!sc->interlaced) {
00837         f2  = 0;
00838         f1 *= 2;
00839     }
00840 
00841     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
00842     avio_wb32(pb, sc->interlaced ? 2 : 1);
00843     avio_wb32(pb, 4);
00844     avio_wb32(pb, f1);
00845     if (sc->interlaced)
00846         avio_wb32(pb, f2);
00847 
00848     mxf_write_local_tag(pb, 8, 0x320E);
00849     avio_wb32(pb, sc->aspect_ratio.num);
00850     avio_wb32(pb, sc->aspect_ratio.den);
00851 
00852     mxf_write_local_tag(pb, 16, 0x3201);
00853     avio_write(pb, *sc->codec_ul, 16);
00854 }
00855 
00856 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
00857 {
00858     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
00859 }
00860 
00861 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
00862 {
00863     AVIOContext *pb = s->pb;
00864     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
00865 
00866     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
00867 
00868     // bit rate
00869     mxf_write_local_tag(pb, 4, 0x8000);
00870     avio_wb32(pb, st->codec->bit_rate);
00871 
00872     // profile and level
00873     mxf_write_local_tag(pb, 1, 0x8007);
00874     if (!st->codec->profile)
00875         profile_and_level |= 0x80; // escape bit
00876     avio_w8(pb, profile_and_level);
00877 }
00878 
00879 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00880 {
00881     AVIOContext *pb = s->pb;
00882 
00883     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
00884 
00885     // audio locked
00886     mxf_write_local_tag(pb, 1, 0x3D02);
00887     avio_w8(pb, 1);
00888 
00889     // write audio sampling rate
00890     mxf_write_local_tag(pb, 8, 0x3D03);
00891     avio_wb32(pb, st->codec->sample_rate);
00892     avio_wb32(pb, 1);
00893 
00894     mxf_write_local_tag(pb, 4, 0x3D07);
00895     avio_wb32(pb, st->codec->channels);
00896 
00897     mxf_write_local_tag(pb, 4, 0x3D01);
00898     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
00899 }
00900 
00901 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00902 {
00903     AVIOContext *pb = s->pb;
00904 
00905     mxf_write_generic_sound_common(s, st, key, size+6+8);
00906 
00907     mxf_write_local_tag(pb, 2, 0x3D0A);
00908     avio_wb16(pb, st->codec->block_align);
00909 
00910     // avg bytes per sec
00911     mxf_write_local_tag(pb, 4, 0x3D09);
00912     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
00913 }
00914 
00915 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
00916 {
00917     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
00918 }
00919 
00920 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
00921 {
00922     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
00923 }
00924 
00925 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
00926 {
00927     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
00928 }
00929 
00930 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
00931 {
00932     MXFContext *mxf = s->priv_data;
00933     AVIOContext *pb = s->pb;
00934     int i, track_count = s->nb_streams+1;
00935 
00936     if (type == MaterialPackage) {
00937         mxf_write_metadata_key(pb, 0x013600);
00938         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
00939         klv_encode_ber_length(pb, 92 + 16*track_count);
00940     } else {
00941         mxf_write_metadata_key(pb, 0x013700);
00942         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
00943         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
00944     }
00945 
00946     // write uid
00947     mxf_write_local_tag(pb, 16, 0x3C0A);
00948     mxf_write_uuid(pb, type, 0);
00949     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
00950     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
00951 
00952     // write package umid
00953     mxf_write_local_tag(pb, 32, 0x4401);
00954     mxf_write_umid(s, type == SourcePackage);
00955     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
00956 
00957     // package creation date
00958     mxf_write_local_tag(pb, 8, 0x4405);
00959     avio_wb64(pb, mxf->timestamp);
00960 
00961     // package modified date
00962     mxf_write_local_tag(pb, 8, 0x4404);
00963     avio_wb64(pb, mxf->timestamp);
00964 
00965     // write track refs
00966     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
00967     mxf_write_refs_count(pb, track_count);
00968     mxf_write_uuid(pb, type == MaterialPackage ? Track :
00969                    Track + TypeBottom, -1); // timecode track
00970     for (i = 0; i < s->nb_streams; i++)
00971         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
00972 
00973     // write multiple descriptor reference
00974     if (type == SourcePackage) {
00975         mxf_write_local_tag(pb, 16, 0x4701);
00976         if (s->nb_streams > 1) {
00977             mxf_write_uuid(pb, MultipleDescriptor, 0);
00978             mxf_write_multi_descriptor(s);
00979         } else
00980             mxf_write_uuid(pb, SubDescriptor, 0);
00981     }
00982 
00983     // write timecode track
00984     mxf_write_track(s, mxf->timecode_track, type);
00985     mxf_write_sequence(s, mxf->timecode_track, type);
00986     mxf_write_timecode_component(s, mxf->timecode_track, type);
00987 
00988     for (i = 0; i < s->nb_streams; i++) {
00989         AVStream *st = s->streams[i];
00990         mxf_write_track(s, st, type);
00991         mxf_write_sequence(s, st, type);
00992         mxf_write_structural_component(s, st, type);
00993 
00994         if (type == SourcePackage) {
00995             MXFStreamContext *sc = st->priv_data;
00996             mxf_essence_container_uls[sc->index].write_desc(s, st);
00997         }
00998     }
00999 }
01000 
01001 static int mxf_write_essence_container_data(AVFormatContext *s)
01002 {
01003     AVIOContext *pb = s->pb;
01004 
01005     mxf_write_metadata_key(pb, 0x012300);
01006     klv_encode_ber_length(pb, 72);
01007 
01008     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
01009     mxf_write_uuid(pb, EssenceContainerData, 0);
01010 
01011     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
01012     mxf_write_umid(s, 1);
01013 
01014     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
01015     avio_wb32(pb, 1);
01016 
01017     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
01018     avio_wb32(pb, 2);
01019 
01020     return 0;
01021 }
01022 
01023 static int mxf_write_header_metadata_sets(AVFormatContext *s)
01024 {
01025     mxf_write_preface(s);
01026     mxf_write_identification(s);
01027     mxf_write_content_storage(s);
01028     mxf_write_package(s, MaterialPackage);
01029     mxf_write_package(s, SourcePackage);
01030     mxf_write_essence_container_data(s);
01031     return 0;
01032 }
01033 
01034 static unsigned klv_fill_size(uint64_t size)
01035 {
01036     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
01037     if (pad < 20) // smallest fill item possible
01038         return pad + KAG_SIZE;
01039     else
01040         return pad & (KAG_SIZE-1);
01041 }
01042 
01043 static void mxf_write_index_table_segment(AVFormatContext *s)
01044 {
01045     MXFContext *mxf = s->priv_data;
01046     AVIOContext *pb = s->pb;
01047     int i, j, temporal_reordering = 0;
01048     int key_index = mxf->last_key_index;
01049 
01050     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
01051 
01052     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
01053         return;
01054 
01055     avio_write(pb, index_table_segment_key, 16);
01056 
01057     if (mxf->edit_unit_byte_count) {
01058         klv_encode_ber_length(pb, 80);
01059     } else {
01060         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
01061                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
01062     }
01063 
01064     // instance id
01065     mxf_write_local_tag(pb, 16, 0x3C0A);
01066     mxf_write_uuid(pb, IndexTableSegment, 0);
01067 
01068     // index edit rate
01069     mxf_write_local_tag(pb, 8, 0x3F0B);
01070     avio_wb32(pb, mxf->time_base.den);
01071     avio_wb32(pb, mxf->time_base.num);
01072 
01073     // index start position
01074     mxf_write_local_tag(pb, 8, 0x3F0C);
01075     avio_wb64(pb, mxf->last_indexed_edit_unit);
01076 
01077     // index duration
01078     mxf_write_local_tag(pb, 8, 0x3F0D);
01079     if (mxf->edit_unit_byte_count)
01080         avio_wb64(pb, 0); // index table covers whole container
01081     else
01082         avio_wb64(pb, mxf->edit_units_count);
01083 
01084     // edit unit byte count
01085     mxf_write_local_tag(pb, 4, 0x3F05);
01086     avio_wb32(pb, mxf->edit_unit_byte_count);
01087 
01088     // index sid
01089     mxf_write_local_tag(pb, 4, 0x3F06);
01090     avio_wb32(pb, 2);
01091 
01092     // body sid
01093     mxf_write_local_tag(pb, 4, 0x3F07);
01094     avio_wb32(pb, 1);
01095 
01096     if (!mxf->edit_unit_byte_count) {
01097         // real slice count - 1
01098         mxf_write_local_tag(pb, 1, 0x3F08);
01099         avio_w8(pb, mxf->slice_count);
01100 
01101         // delta entry array
01102         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
01103         avio_wb32(pb, s->nb_streams+1); // num of entries
01104         avio_wb32(pb, 6);               // size of one entry
01105         // write system item delta entry
01106         avio_w8(pb, 0);
01107         avio_w8(pb, 0); // slice entry
01108         avio_wb32(pb, 0); // element delta
01109         for (i = 0; i < s->nb_streams; i++) {
01110             AVStream *st = s->streams[i];
01111             MXFStreamContext *sc = st->priv_data;
01112             avio_w8(pb, sc->temporal_reordering);
01113             if (sc->temporal_reordering)
01114                 temporal_reordering = 1;
01115             if (i == 0) { // video track
01116                 avio_w8(pb, 0); // slice number
01117                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
01118             } else { // audio track
01119                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
01120                 audio_frame_size += klv_fill_size(audio_frame_size);
01121                 avio_w8(pb, 1);
01122                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
01123             }
01124         }
01125 
01126         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
01127         avio_wb32(pb, mxf->edit_units_count);  // num of entries
01128         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
01129 
01130         for (i = 0; i < mxf->edit_units_count; i++) {
01131             int temporal_offset = 0;
01132 
01133             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
01134                 mxf->last_key_index = key_index;
01135                 key_index = i;
01136             }
01137 
01138             if (temporal_reordering) {
01139                 int pic_num_in_gop = i - key_index;
01140                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
01141                     for (j = key_index; j < mxf->edit_units_count; j++) {
01142                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
01143                             break;
01144                     }
01145                     if (j == mxf->edit_units_count)
01146                         av_log(s, AV_LOG_WARNING, "missing frames\n");
01147                     temporal_offset = j - key_index - pic_num_in_gop;
01148                 }
01149             }
01150             avio_w8(pb, temporal_offset);
01151 
01152             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
01153                 avio_w8(pb, mxf->last_key_index - i);
01154             } else {
01155                 avio_w8(pb, key_index - i); // key frame offset
01156                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
01157                     mxf->last_key_index = key_index;
01158             }
01159 
01160             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
01161                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
01162                 mxf->index_entries[i].flags |= 0x80; // random access
01163             avio_w8(pb, mxf->index_entries[i].flags);
01164             // stream offset
01165             avio_wb64(pb, mxf->index_entries[i].offset);
01166             if (s->nb_streams > 1)
01167                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
01168         }
01169 
01170         mxf->last_key_index = key_index - mxf->edit_units_count;
01171         mxf->last_indexed_edit_unit += mxf->edit_units_count;
01172         mxf->edit_units_count = 0;
01173     }
01174 }
01175 
01176 static void mxf_write_klv_fill(AVFormatContext *s)
01177 {
01178     unsigned pad = klv_fill_size(avio_tell(s->pb));
01179     if (pad) {
01180         avio_write(s->pb, klv_fill_key, 16);
01181         pad -= 16 + 4;
01182         klv_encode_ber4_length(s->pb, pad);
01183         for (; pad; pad--)
01184             avio_w8(s->pb, 0);
01185         assert(!(avio_tell(s->pb) & (KAG_SIZE-1)));
01186     }
01187 }
01188 
01189 static void mxf_write_partition(AVFormatContext *s, int bodysid,
01190                                 int indexsid,
01191                                 const uint8_t *key, int write_metadata)
01192 {
01193     MXFContext *mxf = s->priv_data;
01194     AVIOContext *pb = s->pb;
01195     int64_t header_byte_count_offset;
01196     unsigned index_byte_count = 0;
01197     uint64_t partition_offset = avio_tell(pb);
01198 
01199     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
01200         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
01201             12+mxf->edit_units_count*(11+mxf->slice_count*4);
01202     else if (mxf->edit_unit_byte_count && indexsid)
01203         index_byte_count = 80;
01204 
01205     if (index_byte_count) {
01206         // add encoded ber length
01207         index_byte_count += 16 + klv_ber_length(index_byte_count);
01208         index_byte_count += klv_fill_size(index_byte_count);
01209     }
01210 
01211     if (!memcmp(key, body_partition_key, 16)) {
01212         mxf->body_partition_offset =
01213             av_realloc(mxf->body_partition_offset,
01214                        (mxf->body_partitions_count+1)*
01215                        sizeof(*mxf->body_partition_offset));
01216         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
01217     }
01218 
01219     // write klv
01220     avio_write(pb, key, 16);
01221     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
01222 
01223     // write partition value
01224     avio_wb16(pb, 1); // majorVersion
01225     avio_wb16(pb, 2); // minorVersion
01226     avio_wb32(pb, KAG_SIZE); // KAGSize
01227 
01228     avio_wb64(pb, partition_offset); // ThisPartition
01229 
01230     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
01231         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
01232     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
01233         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
01234     else
01235         avio_wb64(pb, 0);
01236 
01237     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
01238 
01239     // set offset
01240     header_byte_count_offset = avio_tell(pb);
01241     avio_wb64(pb, 0); // headerByteCount, update later
01242 
01243     // indexTable
01244     avio_wb64(pb, index_byte_count); // indexByteCount
01245     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
01246 
01247     // BodyOffset
01248     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
01249         avio_wb64(pb, mxf->body_offset);
01250     } else
01251         avio_wb64(pb, 0);
01252 
01253     avio_wb32(pb, bodysid); // bodySID
01254 
01255     // operational pattern
01256     avio_write(pb, op1a_ul, 16);
01257 
01258     // essence container
01259     mxf_write_essence_container_refs(s);
01260 
01261     if (write_metadata) {
01262         // mark the start of the headermetadata and calculate metadata size
01263         int64_t pos, start;
01264         unsigned header_byte_count;
01265 
01266         mxf_write_klv_fill(s);
01267         start = avio_tell(s->pb);
01268         mxf_write_primer_pack(s);
01269         mxf_write_header_metadata_sets(s);
01270         pos = avio_tell(s->pb);
01271         header_byte_count = pos - start + klv_fill_size(pos);
01272 
01273         // update header_byte_count
01274         avio_seek(pb, header_byte_count_offset, SEEK_SET);
01275         avio_wb64(pb, header_byte_count);
01276         avio_seek(pb, pos, SEEK_SET);
01277     }
01278 
01279     avio_flush(pb);
01280 }
01281 
01282 static const UID mxf_mpeg2_codec_uls[] = {
01283     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
01284     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
01285     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
01286     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
01287     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
01288     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
01289     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
01290     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
01291     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
01292     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
01293 };
01294 
01295 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
01296 {
01297     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
01298 
01299     if (avctx->profile == 4) { // Main
01300         if (avctx->level == 8) // Main
01301             return &mxf_mpeg2_codec_uls[0+long_gop];
01302         else if (avctx->level == 4) // High
01303             return &mxf_mpeg2_codec_uls[4+long_gop];
01304         else if (avctx->level == 6) // High 14
01305             return &mxf_mpeg2_codec_uls[8+long_gop];
01306     } else if (avctx->profile == 0) { // 422
01307         if (avctx->level == 5) // Main
01308             return &mxf_mpeg2_codec_uls[2+long_gop];
01309         else if (avctx->level == 2) // High
01310             return &mxf_mpeg2_codec_uls[6+long_gop];
01311     }
01312     return NULL;
01313 }
01314 
01315 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
01316                                  AVPacket *pkt, MXFIndexEntry *e)
01317 {
01318     MXFStreamContext *sc = st->priv_data;
01319     uint32_t c = -1;
01320     int i;
01321 
01322     for(i = 0; i < pkt->size - 4; i++) {
01323         c = (c<<8) + pkt->data[i];
01324         if (c == 0x1b5) {
01325             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
01326                 st->codec->profile = pkt->data[i+1] & 0x07;
01327                 st->codec->level   = pkt->data[i+2] >> 4;
01328             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
01329                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
01330                 break;
01331             }
01332         } else if (c == 0x1b8) { // gop
01333             if (pkt->data[i+4]>>6 & 0x01) { // closed
01334                 sc->closed_gop = 1;
01335                 if (e->flags & 0x40) // sequence header present
01336                     e->flags |= 0x80; // random access
01337             }
01338         } else if (c == 0x1b3) { // seq
01339             e->flags |= 0x40;
01340             switch ((pkt->data[i+4]>>4) & 0xf) {
01341             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
01342             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
01343             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
01344             default:
01345                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
01346                           st->codec->width, st->codec->height, 1024*1024);
01347             }
01348         } else if (c == 0x100) { // pic
01349             int pict_type = (pkt->data[i+2]>>3) & 0x07;
01350             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
01351             if (pict_type == 2) { // P frame
01352                 e->flags |= 0x22;
01353                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
01354             } else if (pict_type == 3) { // B frame
01355                 if (sc->closed_gop)
01356                     e->flags |= 0x13; // only backward prediction
01357                 else
01358                     e->flags |= 0x33;
01359                 sc->temporal_reordering = -1;
01360             } else if (!pict_type) {
01361                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
01362                 return 0;
01363             }
01364         }
01365     }
01366     if (s->oformat != &ff_mxf_d10_muxer)
01367         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
01368     return !!sc->codec_ul;
01369 }
01370 
01371 static uint64_t mxf_parse_timestamp(time_t timestamp)
01372 {
01373     struct tm *time = gmtime(&timestamp);
01374     if (!time)
01375         return 0;
01376     return (uint64_t)(time->tm_year+1900) << 48 |
01377            (uint64_t)(time->tm_mon+1)     << 40 |
01378            (uint64_t) time->tm_mday       << 32 |
01379                       time->tm_hour       << 24 |
01380                       time->tm_min        << 16 |
01381                       time->tm_sec        << 8;
01382 }
01383 
01384 static void mxf_gen_umid(AVFormatContext *s)
01385 {
01386     MXFContext *mxf = s->priv_data;
01387     uint32_t seed = av_get_random_seed();
01388     uint64_t umid = seed + 0x5294713400000000LL;
01389 
01390     AV_WB64(mxf->umid  , umid);
01391     AV_WB64(mxf->umid+8, umid>>8);
01392 
01393     mxf->instance_number = seed;
01394 }
01395 
01396 static int mxf_write_header(AVFormatContext *s)
01397 {
01398     MXFContext *mxf = s->priv_data;
01399     int i, ret;
01400     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
01401     const int *samples_per_frame = NULL;
01402     AVDictionaryEntry *t;
01403     int64_t timestamp = 0;
01404 
01405     if (!s->nb_streams)
01406         return -1;
01407 
01408     for (i = 0; i < s->nb_streams; i++) {
01409         AVStream *st = s->streams[i];
01410         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
01411         if (!sc)
01412             return AVERROR(ENOMEM);
01413         st->priv_data = sc;
01414 
01415         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {
01416             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
01417             return -1;
01418         }
01419 
01420         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01421             AVRational rate;
01422             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
01423                 samples_per_frame = PAL_samples_per_frame;
01424                 mxf->time_base = (AVRational){ 1, 25 };
01425                 mxf->timecode_base = 25;
01426             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
01427                 samples_per_frame = NTSC_samples_per_frame;
01428                 mxf->time_base = (AVRational){ 1001, 30000 };
01429                 mxf->timecode_base = 30;
01430             } else {
01431                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
01432                 return -1;
01433             }
01434             rate = (AVRational){mxf->time_base.den, mxf->time_base.num};
01435             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
01436             if (mxf->tc_opt_str)
01437                 ret = av_timecode_init_from_string(&mxf->tc, rate,
01438                                                    mxf->tc_opt_str, s);
01439             else
01440                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);
01441             if (ret < 0)
01442                 return ret;
01443             if (s->oformat == &ff_mxf_d10_muxer) {
01444                 if (st->codec->bit_rate == 50000000)
01445                     if (mxf->time_base.den == 25) sc->index = 3;
01446                     else                          sc->index = 5;
01447                 else if (st->codec->bit_rate == 40000000)
01448                     if (mxf->time_base.den == 25) sc->index = 7;
01449                     else                          sc->index = 9;
01450                 else if (st->codec->bit_rate == 30000000)
01451                     if (mxf->time_base.den == 25) sc->index = 11;
01452                     else                          sc->index = 13;
01453                 else {
01454                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
01455                     return -1;
01456                 }
01457 
01458                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
01459                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
01460                     mxf->time_base.num / (8*mxf->time_base.den);
01461                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01462                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
01463                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01464             }
01465         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
01466             if (st->codec->sample_rate != 48000) {
01467                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
01468                 return -1;
01469             }
01470             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
01471             if (s->oformat == &ff_mxf_d10_muxer) {
01472                 if (st->index != 1) {
01473                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
01474                     return -1;
01475                 }
01476                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
01477                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
01478                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
01479                 }
01480                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
01481             } else
01482             mxf->slice_count = 1;
01483         }
01484 
01485         if (!sc->index) {
01486             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
01487             if (sc->index == -1) {
01488                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
01489                        "codec not currently supported in container\n", i);
01490                 return -1;
01491             }
01492         }
01493 
01494         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
01495 
01496         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
01497         sc->track_essence_element_key[15] = present[sc->index];
01498         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
01499 
01500         if (!present[sc->index])
01501             mxf->essence_container_count++;
01502         present[sc->index]++;
01503     }
01504 
01505     if (s->oformat == &ff_mxf_d10_muxer) {
01506         mxf->essence_container_count = 1;
01507     }
01508 
01509     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
01510         mxf_gen_umid(s);
01511 
01512     for (i = 0; i < s->nb_streams; i++) {
01513         MXFStreamContext *sc = s->streams[i]->priv_data;
01514         // update element count
01515         sc->track_essence_element_key[13] = present[sc->index];
01516         sc->order = AV_RB32(sc->track_essence_element_key+12);
01517     }
01518 
01519     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
01520         timestamp = ff_iso8601_to_unix_time(t->value);
01521     if (timestamp)
01522         mxf->timestamp = mxf_parse_timestamp(timestamp);
01523     mxf->duration = -1;
01524 
01525     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
01526     if (!mxf->timecode_track)
01527         return AVERROR(ENOMEM);
01528     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
01529     if (!mxf->timecode_track->priv_data)
01530         return AVERROR(ENOMEM);
01531     mxf->timecode_track->index = -1;
01532 
01533     if (!samples_per_frame)
01534         samples_per_frame = PAL_samples_per_frame;
01535 
01536     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
01537         return -1;
01538 
01539     return 0;
01540 }
01541 
01542 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
01543 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 };
01544 
01545 static void mxf_write_system_item(AVFormatContext *s)
01546 {
01547     MXFContext *mxf = s->priv_data;
01548     AVIOContext *pb = s->pb;
01549     unsigned frame;
01550     uint32_t time_code;
01551 
01552     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
01553 
01554     // write system metadata pack
01555     avio_write(pb, system_metadata_pack_key, 16);
01556     klv_encode_ber4_length(pb, 57);
01557     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
01558     avio_w8(pb, 0x04); // content package rate
01559     avio_w8(pb, 0x00); // content package type
01560     avio_wb16(pb, 0x00); // channel handle
01561     avio_wb16(pb, mxf->tc.start + frame); // continuity count
01562     if (mxf->essence_container_count > 1)
01563         avio_write(pb, multiple_desc_ul, 16);
01564     else {
01565         MXFStreamContext *sc = s->streams[0]->priv_data;
01566         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
01567     }
01568     avio_w8(pb, 0);
01569     avio_wb64(pb, 0);
01570     avio_wb64(pb, 0); // creation date/time stamp
01571 
01572     avio_w8(pb, 0x81); // SMPTE 12M time code
01573     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
01574     avio_wb32(pb, time_code);
01575     avio_wb32(pb, 0); // binary group data
01576     avio_wb64(pb, 0);
01577 
01578     // write system metadata package set
01579     avio_write(pb, system_metadata_package_set_key, 16);
01580     klv_encode_ber4_length(pb, 35);
01581     avio_w8(pb, 0x83); // UMID
01582     avio_wb16(pb, 0x20);
01583     mxf_write_umid(s, 1);
01584 }
01585 
01586 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01587 {
01588     MXFContext *mxf = s->priv_data;
01589     AVIOContext *pb = s->pb;
01590     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
01591         (8*mxf->time_base.den); // frame size
01592     int pad;
01593 
01594     packet_size += 16 + 4;
01595     packet_size += klv_fill_size(packet_size);
01596 
01597     klv_encode_ber4_length(pb, pkt->size);
01598     avio_write(pb, pkt->data, pkt->size);
01599 
01600     // ensure CBR muxing by padding to correct video frame size
01601     pad = packet_size - pkt->size - 16 - 4;
01602     if (pad > 20) {
01603         avio_write(s->pb, klv_fill_key, 16);
01604         pad -= 16 + 4;
01605         klv_encode_ber4_length(s->pb, pad);
01606         for (; pad; pad--)
01607             avio_w8(s->pb, 0);
01608         assert(!(avio_tell(s->pb) & (KAG_SIZE-1)));
01609     } else {
01610         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
01611         for (; pad > 0; pad--)
01612             avio_w8(s->pb, 0);
01613     }
01614 }
01615 
01616 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01617 {
01618     MXFContext *mxf = s->priv_data;
01619     AVIOContext *pb = s->pb;
01620     int frame_size = pkt->size / st->codec->block_align;
01621     uint8_t *samples = pkt->data;
01622     uint8_t *end = pkt->data + pkt->size;
01623     int i;
01624 
01625     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
01626 
01627     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
01628     avio_wl16(pb, frame_size);
01629     avio_w8(pb, (1<<st->codec->channels)-1);
01630 
01631     while (samples < end) {
01632         for (i = 0; i < st->codec->channels; i++) {
01633             uint32_t sample;
01634             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
01635                 sample = AV_RL24(samples)<< 4;
01636                 samples += 3;
01637             } else {
01638                 sample = AV_RL16(samples)<<12;
01639                 samples += 2;
01640             }
01641             avio_wl32(pb, sample | i);
01642         }
01643         for (; i < 8; i++)
01644             avio_wl32(pb, i);
01645     }
01646 }
01647 
01648 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
01649 {
01650     MXFContext *mxf = s->priv_data;
01651     AVIOContext *pb = s->pb;
01652     AVStream *st = s->streams[pkt->stream_index];
01653     MXFStreamContext *sc = st->priv_data;
01654     MXFIndexEntry ie = {0};
01655 
01656     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
01657         mxf->index_entries = av_realloc(mxf->index_entries,
01658             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
01659         if (!mxf->index_entries) {
01660             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
01661             return -1;
01662         }
01663     }
01664 
01665     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
01666         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
01667             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
01668             return -1;
01669         }
01670     }
01671 
01672     if (!mxf->header_written) {
01673         if (mxf->edit_unit_byte_count) {
01674             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
01675             mxf_write_klv_fill(s);
01676             mxf_write_index_table_segment(s);
01677         } else {
01678             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
01679         }
01680         mxf->header_written = 1;
01681     }
01682 
01683     if (st->index == 0) {
01684         if (!mxf->edit_unit_byte_count &&
01685             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
01686             !(ie.flags & 0x33)) { // I frame, Gop start
01687             mxf_write_klv_fill(s);
01688             mxf_write_partition(s, 1, 2, body_partition_key, 0);
01689 
01690             mxf_write_klv_fill(s);
01691             mxf_write_index_table_segment(s);
01692         }
01693 
01694         mxf_write_klv_fill(s);
01695         mxf_write_system_item(s);
01696 
01697         if (!mxf->edit_unit_byte_count) {
01698             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
01699             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
01700             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
01701             mxf->body_offset += KAG_SIZE; // size of system element
01702         }
01703         mxf->edit_units_count++;
01704     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
01705         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
01706             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
01707     }
01708 
01709     mxf_write_klv_fill(s);
01710     avio_write(pb, sc->track_essence_element_key, 16); // write key
01711     if (s->oformat == &ff_mxf_d10_muxer) {
01712         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
01713             mxf_write_d10_video_packet(s, st, pkt);
01714         else
01715             mxf_write_d10_audio_packet(s, st, pkt);
01716     } else {
01717         klv_encode_ber4_length(pb, pkt->size); // write length
01718         avio_write(pb, pkt->data, pkt->size);
01719         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
01720     }
01721 
01722     avio_flush(pb);
01723 
01724     return 0;
01725 }
01726 
01727 static void mxf_write_random_index_pack(AVFormatContext *s)
01728 {
01729     MXFContext *mxf = s->priv_data;
01730     AVIOContext *pb = s->pb;
01731     uint64_t pos = avio_tell(pb);
01732     int i;
01733 
01734     avio_write(pb, random_index_pack_key, 16);
01735     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
01736 
01737     if (mxf->edit_unit_byte_count)
01738         avio_wb32(pb, 1); // BodySID of header partition
01739     else
01740         avio_wb32(pb, 0);
01741     avio_wb64(pb, 0); // offset of header partition
01742 
01743     for (i = 0; i < mxf->body_partitions_count; i++) {
01744         avio_wb32(pb, 1); // BodySID
01745         avio_wb64(pb, mxf->body_partition_offset[i]);
01746     }
01747 
01748     avio_wb32(pb, 0); // BodySID of footer partition
01749     avio_wb64(pb, mxf->footer_partition_offset);
01750 
01751     avio_wb32(pb, avio_tell(pb) - pos + 4);
01752 }
01753 
01754 static int mxf_write_footer(AVFormatContext *s)
01755 {
01756     MXFContext *mxf = s->priv_data;
01757     AVIOContext *pb = s->pb;
01758 
01759     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
01760 
01761     mxf_write_klv_fill(s);
01762     mxf->footer_partition_offset = avio_tell(pb);
01763     if (mxf->edit_unit_byte_count) { // no need to repeat index
01764         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
01765     } else {
01766         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
01767 
01768         mxf_write_klv_fill(s);
01769         mxf_write_index_table_segment(s);
01770     }
01771 
01772     mxf_write_klv_fill(s);
01773     mxf_write_random_index_pack(s);
01774 
01775     if (s->pb->seekable) {
01776         avio_seek(pb, 0, SEEK_SET);
01777         if (mxf->edit_unit_byte_count) {
01778             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
01779             mxf_write_klv_fill(s);
01780             mxf_write_index_table_segment(s);
01781         } else {
01782             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
01783         }
01784     }
01785 
01786     avio_flush(pb);
01787 
01788     ff_audio_interleave_close(s);
01789 
01790     av_freep(&mxf->index_entries);
01791     av_freep(&mxf->body_partition_offset);
01792     av_freep(&mxf->timecode_track->priv_data);
01793     av_freep(&mxf->timecode_track);
01794 
01795     mxf_free(s);
01796 
01797     return 0;
01798 }
01799 
01800 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
01801 {
01802     int i, stream_count = 0;
01803 
01804     for (i = 0; i < s->nb_streams; i++)
01805         stream_count += !!s->streams[i]->last_in_packet_buffer;
01806 
01807     if (stream_count && (s->nb_streams == stream_count || flush)) {
01808         AVPacketList *pktl = s->packet_buffer;
01809         if (s->nb_streams != stream_count) {
01810             AVPacketList *last = NULL;
01811             // find last packet in edit unit
01812             while (pktl) {
01813                 if (!stream_count || pktl->pkt.stream_index == 0)
01814                     break;
01815                 last = pktl;
01816                 pktl = pktl->next;
01817                 stream_count--;
01818             }
01819             // purge packet queue
01820             while (pktl) {
01821                 AVPacketList *next = pktl->next;
01822 
01823                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
01824                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
01825                 av_free_packet(&pktl->pkt);
01826                 av_freep(&pktl);
01827                 pktl = next;
01828             }
01829             if (last)
01830                 last->next = NULL;
01831             else {
01832                 s->packet_buffer = NULL;
01833                 s->packet_buffer_end= NULL;
01834                 goto out;
01835             }
01836             pktl = s->packet_buffer;
01837         }
01838 
01839         *out = pktl->pkt;
01840         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
01841         s->packet_buffer = pktl->next;
01842         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
01843             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
01844         if(!s->packet_buffer)
01845             s->packet_buffer_end= NULL;
01846         av_freep(&pktl);
01847         return 1;
01848     } else {
01849     out:
01850         av_init_packet(out);
01851         return 0;
01852     }
01853 }
01854 
01855 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
01856 {
01857     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
01858     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
01859 
01860     return next->dts > pkt->dts ||
01861         (next->dts == pkt->dts && sc->order < sc2->order);
01862 }
01863 
01864 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
01865 {
01866     return ff_audio_rechunk_interleave(s, out, pkt, flush,
01867                                mxf_interleave_get_packet, mxf_compare_timestamps);
01868 }
01869 
01870 static const AVClass mxf_class = {
01871     .class_name = "mxf",
01872     .item_name  = av_default_item_name,
01873     .version    = LIBAVUTIL_VERSION_INT,
01874     .option     = (const AVOption[]){
01875         {AV_TIMECODE_OPTION(MXFContext, tc_opt_str, AV_OPT_FLAG_ENCODING_PARAM)},
01876         {NULL}
01877     },
01878 };
01879 
01880 static const AVClass mxf_d10_class = {
01881     .class_name = "mxf_d10",
01882     .item_name  = av_default_item_name,
01883     .version    = LIBAVUTIL_VERSION_INT,
01884     .option     = (const AVOption[]){
01885         {AV_TIMECODE_OPTION(MXFContext, tc_opt_str, AV_OPT_FLAG_ENCODING_PARAM)},
01886         {NULL}
01887     },
01888 };
01889 
01890 AVOutputFormat ff_mxf_muxer = {
01891     .name              = "mxf",
01892     .long_name         = NULL_IF_CONFIG_SMALL("Material eXchange Format"),
01893     .mime_type         = "application/mxf",
01894     .extensions        = "mxf",
01895     .priv_data_size    = sizeof(MXFContext),
01896     .audio_codec       = CODEC_ID_PCM_S16LE,
01897     .video_codec       = CODEC_ID_MPEG2VIDEO,
01898     .write_header      = mxf_write_header,
01899     .write_packet      = mxf_write_packet,
01900     .write_trailer     = mxf_write_footer,
01901     .flags             = AVFMT_NOTIMESTAMPS,
01902     .interleave_packet = mxf_interleave,
01903     .priv_class        = &mxf_class,
01904 };
01905 
01906 AVOutputFormat ff_mxf_d10_muxer = {
01907     .name              = "mxf_d10",
01908     .long_name         = NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
01909     .mime_type         = "application/mxf",
01910     .priv_data_size    = sizeof(MXFContext),
01911     .audio_codec       = CODEC_ID_PCM_S16LE,
01912     .video_codec       = CODEC_ID_MPEG2VIDEO,
01913     .write_header      = mxf_write_header,
01914     .write_packet      = mxf_write_packet,
01915     .write_trailer     = mxf_write_footer,
01916     .flags             = AVFMT_NOTIMESTAMPS,
01917     .interleave_packet = mxf_interleave,
01918     .priv_class        = &mxf_d10_class,
01919 };