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/random_seed.h"
00039 #include "libavcodec/bytestream.h"
00040 #include "audiointerleave.h"
00041 #include "avformat.h"
00042 #include "mxf.h"
00043 
00044 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
00045 static const int PAL_samples_per_frame[]  = { 1920, 0 };
00046 
00047 AVOutputFormat mxf_d10_muxer;
00048 
00049 #define EDIT_UNITS_PER_BODY 250
00050 #define KAG_SIZE 512
00051 
00052 typedef struct {
00053     int local_tag;
00054     UID uid;
00055 } MXFLocalTagPair;
00056 
00057 typedef struct {
00058     uint8_t flags;
00059     uint64_t offset;
00060     unsigned slice_offset; 
00061 } MXFIndexEntry;
00062 
00063 typedef struct {
00064     AudioInterleaveContext aic;
00065     UID track_essence_element_key;
00066     int index;               
00067     const UID *codec_ul;
00068     int order;               
00069     int interlaced;          
00070     int temporal_reordering;
00071     AVRational aspect_ratio; 
00072     int closed_gop;          
00073 } MXFStreamContext;
00074 
00075 typedef struct {
00076     UID container_ul;
00077     UID element_ul;
00078     UID codec_ul;
00079     void (*write_desc)();
00080 } MXFContainerEssenceEntry;
00081 
00082 static const struct {
00083     enum CodecID id;
00084     int index;
00085 } mxf_essence_mappings[] = {
00086     { CODEC_ID_MPEG2VIDEO, 0 },
00087     { CODEC_ID_PCM_S24LE,  1 },
00088     { CODEC_ID_PCM_S16LE,  1 },
00089     { CODEC_ID_NONE }
00090 };
00091 
00092 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
00093 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
00094 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
00095 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
00096 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
00097 
00098 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
00099     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
00100       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
00101       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
00102       mxf_write_mpegvideo_desc },
00103     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
00104       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
00105       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00106       mxf_write_aes3_desc },
00107     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
00108       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
00109       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00110       mxf_write_wav_desc },
00111     // D-10 625/50 PAL 50mb/s
00112     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
00113       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00114       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
00115       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00118       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00119       mxf_write_generic_sound_desc },
00120     // D-10 525/60 NTSC 50mb/s
00121     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
00122       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00123       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
00124       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00128       mxf_write_generic_sound_desc },
00129     // D-10 625/50 PAL 40mb/s
00130     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
00131       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00132       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
00133       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00137       mxf_write_generic_sound_desc },
00138     // D-10 525/60 NTSC 40mb/s
00139     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
00140       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00141       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
00142       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00145       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00146       mxf_write_generic_sound_desc },
00147     // D-10 625/50 PAL 30mb/s
00148     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
00149       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00150       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
00151       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00154       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00155       mxf_write_generic_sound_desc },
00156     // D-10 525/60 NTSC 30mb/s
00157     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
00158       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
00159       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
00160       mxf_write_cdci_desc },
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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
00163       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
00164       mxf_write_generic_sound_desc },
00165     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00166       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00167       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
00168       NULL },
00169 };
00170 
00171 typedef struct MXFContext {
00172     int64_t footer_partition_offset;
00173     int essence_container_count;
00174     AVRational time_base;
00175     int header_written;
00176     MXFIndexEntry *index_entries;
00177     unsigned edit_units_count;
00178     uint64_t timestamp;   
00179     uint8_t slice_count;  
00180     int last_indexed_edit_unit;
00181     uint64_t *body_partition_offset;
00182     unsigned body_partitions_count;
00183     int last_key_index;  
00184     uint64_t duration;
00185     AVStream *timecode_track;
00186     int timecode_base;       
00187     int timecode_start;      
00188     int timecode_drop_frame; 
00189     int edit_unit_byte_count; 
00190     uint64_t body_offset;
00191     uint32_t instance_number;
00192     uint8_t umid[16];        
00193 } MXFContext;
00194 
00195 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
00196 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
00197 
00201 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
00202 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
00203 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
00204 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
00205 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
00206 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
00207 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
00208 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
00209 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
00210 
00214 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
00215 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
00216 
00220 static const MXFLocalTagPair mxf_local_tag_batch[] = {
00221     // preface set
00222     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
00223     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
00224     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
00225     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
00226     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
00227     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
00228     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
00229     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
00230     // Identification
00231     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
00232     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
00233     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
00234     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
00235     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
00236     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
00237     // Content Storage
00238     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
00239     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
00240     // Essence Container Data
00241     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
00242     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
00243     // Package
00244     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
00245     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
00246     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
00247     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
00248     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
00249     // Track
00250     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
00251     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
00252     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
00253     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
00254     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
00255     // Sequence
00256     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
00257     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
00258     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
00259     // Source Clip
00260     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
00261     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
00262     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
00263     // Timecode Component
00264     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
00265     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
00266     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
00267     // File Descriptor
00268     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
00269     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
00270     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
00271     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
00272     // Generic Picture Essence Descriptor
00273     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
00274     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
00275     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
00276     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
00277     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
00278     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
00279     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
00280     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
00281     // CDCI Picture Essence Descriptor
00282     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
00283     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
00284     // Generic Sound Essence Descriptor
00285     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
00286     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
00287     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
00288     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
00289     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
00290     // Index Table Segment
00291     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
00292     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
00293     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
00294     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
00295     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
00296     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
00297     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
00298     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
00299     // MPEG video Descriptor
00300     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
00301     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
00302     // Wave Audio Essence Descriptor
00303     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
00304     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
00305 };
00306 
00307 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
00308 {
00309     put_buffer(pb, uuid_base, 12);
00310     put_be16(pb, type);
00311     put_be16(pb, value);
00312 }
00313 
00314 static void mxf_write_umid(AVFormatContext *s, int type)
00315 {
00316     MXFContext *mxf = s->priv_data;
00317     put_buffer(s->pb, umid_ul, 13);
00318     put_be24(s->pb, mxf->instance_number);
00319     put_buffer(s->pb, mxf->umid, 15);
00320     put_byte(s->pb, type);
00321 }
00322 
00323 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
00324 {
00325     put_be32(pb, ref_count);
00326     put_be32(pb, 16);
00327 }
00328 
00329 static int klv_ber_length(uint64_t len)
00330 {
00331     if (len < 128)
00332         return 1;
00333     else
00334         return (av_log2(len) >> 3) + 2;
00335 }
00336 
00337 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
00338 {
00339     // Determine the best BER size
00340     int size;
00341     if (len < 128) {
00342         //short form
00343         put_byte(pb, len);
00344         return 1;
00345     }
00346 
00347     size = (av_log2(len) >> 3) + 1;
00348 
00349     // long form
00350     put_byte(pb, 0x80 + size);
00351     while(size) {
00352         size--;
00353         put_byte(pb, len >> 8 * size & 0xff);
00354     }
00355     return 0;
00356 }
00357 
00358 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
00359 {
00360     put_byte(pb, 0x80 + 3);
00361     put_be24(pb, len);
00362 }
00363 
00364 /*
00365  * Get essence container ul index
00366  */
00367 static int mxf_get_essence_container_ul_index(enum CodecID id)
00368 {
00369     int i;
00370     for (i = 0; mxf_essence_mappings[i].id; i++)
00371         if (mxf_essence_mappings[i].id == id)
00372             return mxf_essence_mappings[i].index;
00373     return -1;
00374 }
00375 
00376 static void mxf_write_primer_pack(AVFormatContext *s)
00377 {
00378     ByteIOContext *pb = s->pb;
00379     int local_tag_number, i = 0;
00380 
00381     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
00382 
00383     put_buffer(pb, primer_pack_key, 16);
00384     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
00385 
00386     put_be32(pb, local_tag_number); // local_tag num
00387     put_be32(pb, 18); // item size, always 18 according to the specs
00388 
00389     for (i = 0; i < local_tag_number; i++) {
00390         put_be16(pb, mxf_local_tag_batch[i].local_tag);
00391         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
00392     }
00393 }
00394 
00395 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
00396 {
00397     put_be16(pb, tag);
00398     put_be16(pb, size);
00399 }
00400 
00401 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
00402 {
00403     put_buffer(pb, header_metadata_key, 13);
00404     put_be24(pb, value);
00405 }
00406 
00407 static void mxf_free(AVFormatContext *s)
00408 {
00409     int i;
00410 
00411     for (i = 0; i < s->nb_streams; i++) {
00412         AVStream *st = s->streams[i];
00413         av_freep(&st->priv_data);
00414     }
00415 }
00416 
00417 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
00418 {
00419     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
00420     while (uls->uid[0]) {
00421         if (type == uls->id)
00422             break;
00423         uls++;
00424     }
00425     return uls;
00426 }
00427 
00428 static void mxf_write_essence_container_refs(AVFormatContext *s)
00429 {
00430     MXFContext *c = s->priv_data;
00431     ByteIOContext *pb = s->pb;
00432     int i;
00433 
00434     mxf_write_refs_count(pb, c->essence_container_count);
00435     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
00436     for (i = 0; i < c->essence_container_count; i++) {
00437         MXFStreamContext *sc = s->streams[i]->priv_data;
00438         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
00439     }
00440 }
00441 
00442 static void mxf_write_preface(AVFormatContext *s)
00443 {
00444     MXFContext *mxf = s->priv_data;
00445     ByteIOContext *pb = s->pb;
00446 
00447     mxf_write_metadata_key(pb, 0x012f00);
00448     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
00449     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
00450 
00451     // write preface set uid
00452     mxf_write_local_tag(pb, 16, 0x3C0A);
00453     mxf_write_uuid(pb, Preface, 0);
00454     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
00455 
00456     // last modified date
00457     mxf_write_local_tag(pb, 8, 0x3B02);
00458     put_be64(pb, mxf->timestamp);
00459 
00460     // write version
00461     mxf_write_local_tag(pb, 2, 0x3B05);
00462     put_be16(pb, 258); // v1.2
00463 
00464     // write identification_refs
00465     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
00466     mxf_write_refs_count(pb, 1);
00467     mxf_write_uuid(pb, Identification, 0);
00468 
00469     // write content_storage_refs
00470     mxf_write_local_tag(pb, 16, 0x3B03);
00471     mxf_write_uuid(pb, ContentStorage, 0);
00472 
00473     // operational pattern
00474     mxf_write_local_tag(pb, 16, 0x3B09);
00475     put_buffer(pb, op1a_ul, 16);
00476 
00477     // write essence_container_refs
00478     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
00479     mxf_write_essence_container_refs(s);
00480 
00481     // write dm_scheme_refs
00482     mxf_write_local_tag(pb, 8, 0x3B0B);
00483     put_be64(pb, 0);
00484 }
00485 
00486 /*
00487  * Write a local tag containing an ascii string as utf-16
00488  */
00489 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
00490 {
00491     int i, size = strlen(value);
00492     mxf_write_local_tag(pb, size*2, tag);
00493     for (i = 0; i < size; i++)
00494         put_be16(pb, value[i]);
00495 }
00496 
00497 static void mxf_write_identification(AVFormatContext *s)
00498 {
00499     MXFContext *mxf = s->priv_data;
00500     ByteIOContext *pb = s->pb;
00501     const char *company = "FFmpeg";
00502     const char *product = "OP1a Muxer";
00503     const char *version;
00504     int length;
00505 
00506     mxf_write_metadata_key(pb, 0x013000);
00507     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
00508 
00509     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
00510         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
00511     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
00512     klv_encode_ber_length(pb, length);
00513 
00514     // write uid
00515     mxf_write_local_tag(pb, 16, 0x3C0A);
00516     mxf_write_uuid(pb, Identification, 0);
00517     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
00518 
00519     // write generation uid
00520     mxf_write_local_tag(pb, 16, 0x3C09);
00521     mxf_write_uuid(pb, Identification, 1);
00522 
00523     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
00524     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
00525     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
00526 
00527     // write product uid
00528     mxf_write_local_tag(pb, 16, 0x3C05);
00529     mxf_write_uuid(pb, Identification, 2);
00530 
00531     // modification date
00532     mxf_write_local_tag(pb, 8, 0x3C06);
00533     put_be64(pb, mxf->timestamp);
00534 }
00535 
00536 static void mxf_write_content_storage(AVFormatContext *s)
00537 {
00538     ByteIOContext *pb = s->pb;
00539 
00540     mxf_write_metadata_key(pb, 0x011800);
00541     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
00542     klv_encode_ber_length(pb, 92);
00543 
00544     // write uid
00545     mxf_write_local_tag(pb, 16, 0x3C0A);
00546     mxf_write_uuid(pb, ContentStorage, 0);
00547     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
00548 
00549     // write package reference
00550     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
00551     mxf_write_refs_count(pb, 2);
00552     mxf_write_uuid(pb, MaterialPackage, 0);
00553     mxf_write_uuid(pb, SourcePackage, 0);
00554 
00555     // write essence container data
00556     mxf_write_local_tag(pb, 8 + 16, 0x1902);
00557     mxf_write_refs_count(pb, 1);
00558     mxf_write_uuid(pb, EssenceContainerData, 0);
00559 }
00560 
00561 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00562 {
00563     MXFContext *mxf = s->priv_data;
00564     ByteIOContext *pb = s->pb;
00565     MXFStreamContext *sc = st->priv_data;
00566 
00567     mxf_write_metadata_key(pb, 0x013b00);
00568     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
00569     klv_encode_ber_length(pb, 80);
00570 
00571     // write track uid
00572     mxf_write_local_tag(pb, 16, 0x3C0A);
00573     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
00574     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
00575 
00576     // write track id
00577     mxf_write_local_tag(pb, 4, 0x4801);
00578     put_be32(pb, st->index+2);
00579 
00580     // write track number
00581     mxf_write_local_tag(pb, 4, 0x4804);
00582     if (type == MaterialPackage)
00583         put_be32(pb, 0); // track number of material package is 0
00584     else
00585         put_buffer(pb, sc->track_essence_element_key + 12, 4);
00586 
00587     mxf_write_local_tag(pb, 8, 0x4B01);
00588     put_be32(pb, mxf->time_base.den);
00589     put_be32(pb, mxf->time_base.num);
00590 
00591     // write origin
00592     mxf_write_local_tag(pb, 8, 0x4B02);
00593     put_be64(pb, 0);
00594 
00595     // write sequence refs
00596     mxf_write_local_tag(pb, 16, 0x4803);
00597     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
00598 }
00599 
00600 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 };
00601 
00602 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
00603 {
00604     MXFContext *mxf = s->priv_data;
00605     ByteIOContext *pb = s->pb;
00606 
00607     // find data define uls
00608     mxf_write_local_tag(pb, 16, 0x0201);
00609     if (st == mxf->timecode_track)
00610         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
00611     else {
00612         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
00613         put_buffer(pb, data_def_ul->uid, 16);
00614     }
00615 
00616     // write duration
00617     mxf_write_local_tag(pb, 8, 0x0202);
00618     put_be64(pb, mxf->duration);
00619 }
00620 
00621 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00622 {
00623     MXFContext *mxf = s->priv_data;
00624     ByteIOContext *pb = s->pb;
00625     enum MXFMetadataSetType component;
00626 
00627     mxf_write_metadata_key(pb, 0x010f00);
00628     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
00629     klv_encode_ber_length(pb, 80);
00630 
00631     mxf_write_local_tag(pb, 16, 0x3C0A);
00632     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
00633 
00634     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
00635     mxf_write_common_fields(s, st);
00636 
00637     // write structural component
00638     mxf_write_local_tag(pb, 16 + 8, 0x1001);
00639     mxf_write_refs_count(pb, 1);
00640     if (st == mxf->timecode_track)
00641         component = TimecodeComponent;
00642     else
00643         component = SourceClip;
00644     if (type == SourcePackage)
00645         component += TypeBottom;
00646     mxf_write_uuid(pb, component, st->index);
00647 }
00648 
00649 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00650 {
00651     MXFContext *mxf = s->priv_data;
00652     ByteIOContext *pb = s->pb;
00653 
00654     mxf_write_metadata_key(pb, 0x011400);
00655     klv_encode_ber_length(pb, 75);
00656 
00657     // UID
00658     mxf_write_local_tag(pb, 16, 0x3C0A);
00659     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
00660                    TimecodeComponent + TypeBottom, st->index);
00661 
00662     mxf_write_common_fields(s, st);
00663 
00664     // Start Time Code
00665     mxf_write_local_tag(pb, 8, 0x1501);
00666     put_be64(pb, mxf->timecode_start);
00667 
00668     // Rounded Time Code Base
00669     mxf_write_local_tag(pb, 2, 0x1502);
00670     put_be16(pb, mxf->timecode_base);
00671 
00672     // Drop Frame
00673     mxf_write_local_tag(pb, 1, 0x1503);
00674     put_byte(pb, mxf->timecode_drop_frame);
00675 }
00676 
00677 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
00678 {
00679     ByteIOContext *pb = s->pb;
00680     int i;
00681 
00682     mxf_write_metadata_key(pb, 0x011100);
00683     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
00684     klv_encode_ber_length(pb, 108);
00685 
00686     // write uid
00687     mxf_write_local_tag(pb, 16, 0x3C0A);
00688     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
00689 
00690     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
00691     mxf_write_common_fields(s, st);
00692 
00693     // write start_position
00694     mxf_write_local_tag(pb, 8, 0x1201);
00695     put_be64(pb, 0);
00696 
00697     // write source package uid, end of the reference
00698     mxf_write_local_tag(pb, 32, 0x1101);
00699     if (type == SourcePackage) {
00700         for (i = 0; i < 4; i++)
00701             put_be64(pb, 0);
00702     } else
00703         mxf_write_umid(s, 1);
00704 
00705     // write source track id
00706     mxf_write_local_tag(pb, 4, 0x1102);
00707     if (type == SourcePackage)
00708         put_be32(pb, 0);
00709     else
00710         put_be32(pb, st->index+2);
00711 }
00712 
00713 static void mxf_write_multi_descriptor(AVFormatContext *s)
00714 {
00715     MXFContext *mxf = s->priv_data;
00716     ByteIOContext *pb = s->pb;
00717     const uint8_t *ul;
00718     int i;
00719 
00720     mxf_write_metadata_key(pb, 0x014400);
00721     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
00722     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
00723 
00724     mxf_write_local_tag(pb, 16, 0x3C0A);
00725     mxf_write_uuid(pb, MultipleDescriptor, 0);
00726     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
00727 
00728     // write sample rate
00729     mxf_write_local_tag(pb, 8, 0x3001);
00730     put_be32(pb, mxf->time_base.den);
00731     put_be32(pb, mxf->time_base.num);
00732 
00733     // write essence container ul
00734     mxf_write_local_tag(pb, 16, 0x3004);
00735     if (mxf->essence_container_count > 1)
00736         ul = multiple_desc_ul;
00737     else {
00738         MXFStreamContext *sc = s->streams[0]->priv_data;
00739         ul = mxf_essence_container_uls[sc->index].container_ul;
00740     }
00741     put_buffer(pb, ul, 16);
00742 
00743     // write sub descriptor refs
00744     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
00745     mxf_write_refs_count(pb, s->nb_streams);
00746     for (i = 0; i < s->nb_streams; i++)
00747         mxf_write_uuid(pb, SubDescriptor, i);
00748 }
00749 
00750 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00751 {
00752     MXFContext *mxf = s->priv_data;
00753     MXFStreamContext *sc = st->priv_data;
00754     ByteIOContext *pb = s->pb;
00755 
00756     put_buffer(pb, key, 16);
00757     klv_encode_ber4_length(pb, size+20+8+12+20);
00758 
00759     mxf_write_local_tag(pb, 16, 0x3C0A);
00760     mxf_write_uuid(pb, SubDescriptor, st->index);
00761 
00762     mxf_write_local_tag(pb, 4, 0x3006);
00763     put_be32(pb, st->index+2);
00764 
00765     mxf_write_local_tag(pb, 8, 0x3001);
00766     put_be32(pb, mxf->time_base.den);
00767     put_be32(pb, mxf->time_base.num);
00768 
00769     mxf_write_local_tag(pb, 16, 0x3004);
00770     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
00771 }
00772 
00773 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
00774 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
00775 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
00776 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
00777 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
00778 
00779 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00780 {
00781     MXFStreamContext *sc = st->priv_data;
00782     ByteIOContext *pb = s->pb;
00783     int stored_height = (st->codec->height+15)/16*16;
00784     int display_height;
00785     int f1, f2;
00786 
00787     mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
00788 
00789     mxf_write_local_tag(pb, 4, 0x3203);
00790     put_be32(pb, st->codec->width);
00791 
00792     mxf_write_local_tag(pb, 4, 0x3202);
00793     put_be32(pb, stored_height>>sc->interlaced);
00794 
00795     mxf_write_local_tag(pb, 4, 0x3209);
00796     put_be32(pb, st->codec->width);
00797 
00798     if (st->codec->height == 608) // PAL + VBI
00799         display_height = 576;
00800     else if (st->codec->height == 512)  // NTSC + VBI
00801         display_height = 486;
00802     else
00803         display_height = st->codec->height;
00804 
00805     mxf_write_local_tag(pb, 4, 0x3208);
00806     put_be32(pb, display_height>>sc->interlaced);
00807 
00808     // component depth
00809     mxf_write_local_tag(pb, 4, 0x3301);
00810     put_be32(pb, 8);
00811 
00812     // horizontal subsampling
00813     mxf_write_local_tag(pb, 4, 0x3302);
00814     put_be32(pb, 2);
00815 
00816     // frame layout
00817     mxf_write_local_tag(pb, 1, 0x320C);
00818     put_byte(pb, sc->interlaced);
00819 
00820     // video line map
00821     switch (st->codec->height) {
00822     case  576: f1 = 23; f2 = 336; break;
00823     case  608: f1 =  7; f2 = 320; break;
00824     case  480: f1 = 20; f2 = 283; break;
00825     case  512: f1 =  7; f2 = 270; break;
00826     case  720: f1 = 26; f2 =   0; break; // progressive
00827     case 1080: f1 = 21; f2 = 584; break;
00828     default:   f1 =  0; f2 =   0; break;
00829     }
00830 
00831     if (!sc->interlaced) {
00832         f2  = 0;
00833         f1 *= 2;
00834     }
00835 
00836     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
00837     put_be32(pb, sc->interlaced ? 2 : 1);
00838     put_be32(pb, 4);
00839     put_be32(pb, f1);
00840     if (sc->interlaced)
00841         put_be32(pb, f2);
00842 
00843     mxf_write_local_tag(pb, 8, 0x320E);
00844     put_be32(pb, sc->aspect_ratio.num);
00845     put_be32(pb, sc->aspect_ratio.den);
00846 
00847     mxf_write_local_tag(pb, 16, 0x3201);
00848     put_buffer(pb, *sc->codec_ul, 16);
00849 }
00850 
00851 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
00852 {
00853     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
00854 }
00855 
00856 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
00857 {
00858     ByteIOContext *pb = s->pb;
00859     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
00860 
00861     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
00862 
00863     // bit rate
00864     mxf_write_local_tag(pb, 4, 0x8000);
00865     put_be32(pb, st->codec->bit_rate);
00866 
00867     // profile and level
00868     mxf_write_local_tag(pb, 1, 0x8007);
00869     if (!st->codec->profile)
00870         profile_and_level |= 0x80; // escape bit
00871     put_byte(pb, profile_and_level);
00872 }
00873 
00874 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00875 {
00876     ByteIOContext *pb = s->pb;
00877 
00878     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
00879 
00880     // audio locked
00881     mxf_write_local_tag(pb, 1, 0x3D02);
00882     put_byte(pb, 1);
00883 
00884     // write audio sampling rate
00885     mxf_write_local_tag(pb, 8, 0x3D03);
00886     put_be32(pb, st->codec->sample_rate);
00887     put_be32(pb, 1);
00888 
00889     mxf_write_local_tag(pb, 4, 0x3D07);
00890     put_be32(pb, st->codec->channels);
00891 
00892     mxf_write_local_tag(pb, 4, 0x3D01);
00893     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
00894 }
00895 
00896 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
00897 {
00898     ByteIOContext *pb = s->pb;
00899 
00900     mxf_write_generic_sound_common(s, st, key, size+6+8);
00901 
00902     mxf_write_local_tag(pb, 2, 0x3D0A);
00903     put_be16(pb, st->codec->block_align);
00904 
00905     // avg bytes per sec
00906     mxf_write_local_tag(pb, 4, 0x3D09);
00907     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
00908 }
00909 
00910 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
00911 {
00912     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
00913 }
00914 
00915 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
00916 {
00917     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
00918 }
00919 
00920 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
00921 {
00922     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
00923 }
00924 
00925 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
00926 {
00927     MXFContext *mxf = s->priv_data;
00928     ByteIOContext *pb = s->pb;
00929     int i, track_count = s->nb_streams+1;
00930 
00931     if (type == MaterialPackage) {
00932         mxf_write_metadata_key(pb, 0x013600);
00933         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
00934         klv_encode_ber_length(pb, 92 + 16*track_count);
00935     } else {
00936         mxf_write_metadata_key(pb, 0x013700);
00937         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
00938         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
00939     }
00940 
00941     // write uid
00942     mxf_write_local_tag(pb, 16, 0x3C0A);
00943     mxf_write_uuid(pb, type, 0);
00944     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
00945     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
00946 
00947     // write package umid
00948     mxf_write_local_tag(pb, 32, 0x4401);
00949     mxf_write_umid(s, type == SourcePackage);
00950     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
00951 
00952     // package creation date
00953     mxf_write_local_tag(pb, 8, 0x4405);
00954     put_be64(pb, mxf->timestamp);
00955 
00956     // package modified date
00957     mxf_write_local_tag(pb, 8, 0x4404);
00958     put_be64(pb, mxf->timestamp);
00959 
00960     // write track refs
00961     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
00962     mxf_write_refs_count(pb, track_count);
00963     mxf_write_uuid(pb, type == MaterialPackage ? Track :
00964                    Track + TypeBottom, -1); // timecode track
00965     for (i = 0; i < s->nb_streams; i++)
00966         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
00967 
00968     // write multiple descriptor reference
00969     if (type == SourcePackage) {
00970         mxf_write_local_tag(pb, 16, 0x4701);
00971         if (s->nb_streams > 1) {
00972             mxf_write_uuid(pb, MultipleDescriptor, 0);
00973             mxf_write_multi_descriptor(s);
00974         } else
00975             mxf_write_uuid(pb, SubDescriptor, 0);
00976     }
00977 
00978     // write timecode track
00979     mxf_write_track(s, mxf->timecode_track, type);
00980     mxf_write_sequence(s, mxf->timecode_track, type);
00981     mxf_write_timecode_component(s, mxf->timecode_track, type);
00982 
00983     for (i = 0; i < s->nb_streams; i++) {
00984         AVStream *st = s->streams[i];
00985         mxf_write_track(s, st, type);
00986         mxf_write_sequence(s, st, type);
00987         mxf_write_structural_component(s, st, type);
00988 
00989         if (type == SourcePackage) {
00990             MXFStreamContext *sc = st->priv_data;
00991             mxf_essence_container_uls[sc->index].write_desc(s, st);
00992         }
00993     }
00994 }
00995 
00996 static int mxf_write_essence_container_data(AVFormatContext *s)
00997 {
00998     ByteIOContext *pb = s->pb;
00999 
01000     mxf_write_metadata_key(pb, 0x012300);
01001     klv_encode_ber_length(pb, 72);
01002 
01003     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
01004     mxf_write_uuid(pb, EssenceContainerData, 0);
01005 
01006     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
01007     mxf_write_umid(s, 1);
01008 
01009     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
01010     put_be32(pb, 1);
01011 
01012     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
01013     put_be32(pb, 2);
01014 
01015     return 0;
01016 }
01017 
01018 static int mxf_write_header_metadata_sets(AVFormatContext *s)
01019 {
01020     mxf_write_preface(s);
01021     mxf_write_identification(s);
01022     mxf_write_content_storage(s);
01023     mxf_write_package(s, MaterialPackage);
01024     mxf_write_package(s, SourcePackage);
01025     mxf_write_essence_container_data(s);
01026     return 0;
01027 }
01028 
01029 static unsigned klv_fill_size(uint64_t size)
01030 {
01031     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
01032     if (pad < 20) // smallest fill item possible
01033         return pad + KAG_SIZE;
01034     else
01035         return pad & (KAG_SIZE-1);
01036 }
01037 
01038 static void mxf_write_index_table_segment(AVFormatContext *s)
01039 {
01040     MXFContext *mxf = s->priv_data;
01041     ByteIOContext *pb = s->pb;
01042     int i, j;
01043     int temporal_reordering = 0;
01044     int key_index = mxf->last_key_index;
01045 
01046     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
01047 
01048     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
01049         return;
01050 
01051     put_buffer(pb, index_table_segment_key, 16);
01052 
01053     if (mxf->edit_unit_byte_count) {
01054         klv_encode_ber_length(pb, 80);
01055     } else {
01056         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
01057                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
01058     }
01059 
01060     // instance id
01061     mxf_write_local_tag(pb, 16, 0x3C0A);
01062     mxf_write_uuid(pb, IndexTableSegment, 0);
01063 
01064     // index edit rate
01065     mxf_write_local_tag(pb, 8, 0x3F0B);
01066     put_be32(pb, mxf->time_base.den);
01067     put_be32(pb, mxf->time_base.num);
01068 
01069     // index start position
01070     mxf_write_local_tag(pb, 8, 0x3F0C);
01071     put_be64(pb, mxf->last_indexed_edit_unit);
01072 
01073     // index duration
01074     mxf_write_local_tag(pb, 8, 0x3F0D);
01075     if (mxf->edit_unit_byte_count)
01076         put_be64(pb, 0); // index table covers whole container
01077     else
01078         put_be64(pb, mxf->edit_units_count);
01079 
01080     // edit unit byte count
01081     mxf_write_local_tag(pb, 4, 0x3F05);
01082     put_be32(pb, mxf->edit_unit_byte_count);
01083 
01084     // index sid
01085     mxf_write_local_tag(pb, 4, 0x3F06);
01086     put_be32(pb, 2);
01087 
01088     // body sid
01089     mxf_write_local_tag(pb, 4, 0x3F07);
01090     put_be32(pb, 1);
01091 
01092     if (!mxf->edit_unit_byte_count) {
01093         // real slice count - 1
01094         mxf_write_local_tag(pb, 1, 0x3F08);
01095         put_byte(pb, mxf->slice_count);
01096 
01097         // delta entry array
01098         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
01099         put_be32(pb, s->nb_streams+1); // num of entries
01100         put_be32(pb, 6);               // size of one entry
01101         // write system item delta entry
01102         put_byte(pb, 0);
01103         put_byte(pb, 0); // slice entry
01104         put_be32(pb, 0); // element delta
01105         for (i = 0; i < s->nb_streams; i++) {
01106             AVStream *st = s->streams[i];
01107             MXFStreamContext *sc = st->priv_data;
01108             put_byte(pb, sc->temporal_reordering);
01109             if (sc->temporal_reordering)
01110                 temporal_reordering = 1;
01111             if (i == 0) { // video track
01112                 put_byte(pb, 0); // slice number
01113                 put_be32(pb, KAG_SIZE); // system item size including klv fill
01114             } else { // audio track
01115                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
01116                 audio_frame_size += klv_fill_size(audio_frame_size);
01117                 put_byte(pb, 1);
01118                 put_be32(pb, (i-1)*audio_frame_size); // element delta
01119             }
01120         }
01121 
01122         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
01123         put_be32(pb, mxf->edit_units_count);  // num of entries
01124         put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
01125         for (i = 0; i < mxf->edit_units_count; i++) {
01126             int temporal_offset = 0;
01127             if (temporal_reordering) {
01128                 for (j = i+1; j < mxf->edit_units_count; j++) {
01129                     temporal_offset++;
01130                     if (mxf->index_entries[j].flags & 0x10) { // backward prediction
01131                         // next is not b, so is reordered
01132                         if (!(mxf->index_entries[i+1].flags & 0x10)) {
01133                             if ((mxf->index_entries[i].flags & 0x11) == 0) // I frame
01134                                 temporal_offset = 0;
01135                             else
01136                                 temporal_offset = -temporal_offset;
01137                         }
01138                         break;
01139                     }
01140                 }
01141             }
01142             put_byte(pb, temporal_offset);
01143 
01144             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
01145                 if (mxf->index_entries[i].flags & 0x40 && // seq header
01146                     (!temporal_reordering || !temporal_offset))
01147                     mxf->index_entries[i].flags |= 0x80; // random access
01148                 mxf->last_key_index = key_index;
01149                 key_index = i;
01150             }
01151             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
01152                 put_byte(pb, mxf->last_key_index - i);
01153             } else {
01154                 put_byte(pb, key_index - i); // key frame offset
01155                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
01156                     mxf->last_key_index = key_index;
01157             }
01158             put_byte(pb, mxf->index_entries[i].flags);
01159             // stream offset
01160             put_be64(pb, mxf->index_entries[i].offset);
01161             if (s->nb_streams > 1)
01162                 put_be32(pb, mxf->index_entries[i].slice_offset);
01163         }
01164 
01165         mxf->last_key_index = key_index - mxf->edit_units_count;
01166         mxf->last_indexed_edit_unit += mxf->edit_units_count;
01167         mxf->edit_units_count = 0;
01168     }
01169 }
01170 
01171 static void mxf_write_klv_fill(AVFormatContext *s)
01172 {
01173     unsigned pad = klv_fill_size(url_ftell(s->pb));
01174     if (pad) {
01175         put_buffer(s->pb, klv_fill_key, 16);
01176         pad -= 16 + 4;
01177         klv_encode_ber4_length(s->pb, pad);
01178         for (; pad; pad--)
01179             put_byte(s->pb, 0);
01180         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
01181     }
01182 }
01183 
01184 static void mxf_write_partition(AVFormatContext *s, int bodysid,
01185                                 int indexsid,
01186                                 const uint8_t *key, int write_metadata)
01187 {
01188     MXFContext *mxf = s->priv_data;
01189     ByteIOContext *pb = s->pb;
01190     int64_t header_byte_count_offset;
01191     unsigned index_byte_count = 0;
01192     uint64_t partition_offset = url_ftell(pb);
01193 
01194     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
01195         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
01196             12+mxf->edit_units_count*(11+mxf->slice_count*4);
01197     else if (mxf->edit_unit_byte_count && indexsid)
01198         index_byte_count = 80;
01199 
01200     if (index_byte_count) {
01201         // add encoded ber length
01202         index_byte_count += 16 + klv_ber_length(index_byte_count);
01203         index_byte_count += klv_fill_size(index_byte_count);
01204     }
01205 
01206     if (!memcmp(key, body_partition_key, 16)) {
01207         mxf->body_partition_offset =
01208             av_realloc(mxf->body_partition_offset,
01209                        (mxf->body_partitions_count+1)*
01210                        sizeof(*mxf->body_partition_offset));
01211         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
01212     }
01213 
01214     // write klv
01215     put_buffer(pb, key, 16);
01216     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
01217 
01218     // write partition value
01219     put_be16(pb, 1); // majorVersion
01220     put_be16(pb, 2); // minorVersion
01221     put_be32(pb, KAG_SIZE); // KAGSize
01222 
01223     put_be64(pb, partition_offset); // ThisPartition
01224 
01225     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
01226         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
01227     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
01228         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
01229     else
01230         put_be64(pb, 0);
01231 
01232     put_be64(pb, mxf->footer_partition_offset); // footerPartition
01233 
01234     // set offset
01235     header_byte_count_offset = url_ftell(pb);
01236     put_be64(pb, 0); // headerByteCount, update later
01237 
01238     // indexTable
01239     put_be64(pb, index_byte_count); // indexByteCount
01240     put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
01241 
01242     // BodyOffset
01243     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
01244         put_be64(pb, mxf->body_offset);
01245     } else
01246         put_be64(pb, 0);
01247 
01248     put_be32(pb, bodysid); // bodySID
01249 
01250     // operational pattern
01251     put_buffer(pb, op1a_ul, 16);
01252 
01253     // essence container
01254     mxf_write_essence_container_refs(s);
01255 
01256     if (write_metadata) {
01257         // mark the start of the headermetadata and calculate metadata size
01258         int64_t pos, start;
01259         unsigned header_byte_count;
01260 
01261         mxf_write_klv_fill(s);
01262         start = url_ftell(s->pb);
01263         mxf_write_primer_pack(s);
01264         mxf_write_header_metadata_sets(s);
01265         pos = url_ftell(s->pb);
01266         header_byte_count = pos - start + klv_fill_size(pos);
01267 
01268         // update header_byte_count
01269         url_fseek(pb, header_byte_count_offset, SEEK_SET);
01270         put_be64(pb, header_byte_count);
01271         url_fseek(pb, pos, SEEK_SET);
01272     }
01273 
01274     put_flush_packet(pb);
01275 }
01276 
01277 static const UID mxf_mpeg2_codec_uls[] = {
01278     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
01279     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
01280     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
01281     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
01282     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
01283     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
01284     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
01285     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
01286 };
01287 
01288 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
01289 {
01290     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
01291 
01292     if (avctx->profile == 4) { // Main
01293         if (avctx->level == 8) // Main
01294             return &mxf_mpeg2_codec_uls[0+long_gop];
01295         else if (avctx->level == 4) // High
01296             return &mxf_mpeg2_codec_uls[4+long_gop];
01297     } else if (avctx->profile == 0) { // 422
01298         if (avctx->level == 5) // Main
01299             return &mxf_mpeg2_codec_uls[2+long_gop];
01300         else if (avctx->level == 2) // High
01301             return &mxf_mpeg2_codec_uls[6+long_gop];
01302     }
01303     return NULL;
01304 }
01305 
01306 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
01307 {
01308     MXFStreamContext *sc = st->priv_data;
01309     MXFContext *mxf = s->priv_data;
01310     uint32_t c = -1;
01311     int i;
01312 
01313     *flags = 0;
01314 
01315     for(i = 0; i < pkt->size - 4; i++) {
01316         c = (c<<8) + pkt->data[i];
01317         if (c == 0x1b5) {
01318             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
01319                 st->codec->profile = pkt->data[i+1] & 0x07;
01320                 st->codec->level   = pkt->data[i+2] >> 4;
01321             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
01322                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
01323                 break;
01324             }
01325         } else if (c == 0x1b8) { // gop
01326             if (pkt->data[i+4]>>6 & 0x01) { // closed
01327                 sc->closed_gop = 1;
01328                 if (*flags & 0x40) // sequence header present
01329                     *flags |= 0x80; // random access
01330             }
01331             if (!mxf->header_written) {
01332                 unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
01333                 unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
01334                 unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
01335                 unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
01336                 mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
01337                 mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
01338                     mxf->timecode_base + frames;
01339                 if (mxf->timecode_drop_frame) {
01340                     unsigned tminutes = 60 * hours + minutes;
01341                     mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
01342                 }
01343                 av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
01344                        hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
01345             }
01346         } else if (c == 0x1b3) { // seq
01347             *flags |= 0x40;
01348             switch ((pkt->data[i+4]>>4) & 0xf) {
01349             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
01350             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
01351             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
01352             default:
01353                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
01354                           st->codec->width, st->codec->height, 1024*1024);
01355             }
01356         } else if (c == 0x100) { // pic
01357             int pict_type = (pkt->data[i+2]>>3) & 0x07;
01358             if (pict_type == 2) { // P frame
01359                 *flags |= 0x22;
01360                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
01361             } else if (pict_type == 3) { // B frame
01362                 if (sc->closed_gop)
01363                     *flags |= 0x13; // only backward prediction
01364                 else
01365                     *flags |= 0x33;
01366                 sc->temporal_reordering = -1;
01367             } else if (!pict_type) {
01368                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
01369                 return 0;
01370             }
01371         }
01372     }
01373     if (s->oformat != &mxf_d10_muxer)
01374         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
01375     return !!sc->codec_ul;
01376 }
01377 
01378 static uint64_t mxf_parse_timestamp(time_t timestamp)
01379 {
01380     struct tm *time = gmtime(&timestamp);
01381     return (uint64_t)(time->tm_year+1900) << 48 |
01382            (uint64_t)(time->tm_mon+1)     << 40 |
01383            (uint64_t) time->tm_mday       << 32 |
01384                       time->tm_hour       << 24 |
01385                       time->tm_min        << 16 |
01386                       time->tm_sec        << 8;
01387 }
01388 
01389 static void mxf_gen_umid(AVFormatContext *s)
01390 {
01391     MXFContext *mxf = s->priv_data;
01392     uint32_t seed = ff_random_get_seed();
01393     uint64_t umid = seed + 0x5294713400000000LL;
01394 
01395     AV_WB64(mxf->umid  , umid);
01396     AV_WB64(mxf->umid+8, umid>>8);
01397 
01398     mxf->instance_number = seed;
01399 }
01400 
01401 static int mxf_write_header(AVFormatContext *s)
01402 {
01403     MXFContext *mxf = s->priv_data;
01404     int i;
01405     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
01406     const int *samples_per_frame = NULL;
01407 
01408     if (!s->nb_streams)
01409         return -1;
01410 
01411     for (i = 0; i < s->nb_streams; i++) {
01412         AVStream *st = s->streams[i];
01413         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
01414         if (!sc)
01415             return AVERROR(ENOMEM);
01416         st->priv_data = sc;
01417 
01418         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01419             if (i != 0) {
01420                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
01421                 return -1;
01422             }
01423             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
01424                 samples_per_frame = PAL_samples_per_frame;
01425                 mxf->time_base = (AVRational){ 1, 25 };
01426                 mxf->timecode_base = 25;
01427             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
01428                 samples_per_frame = NTSC_samples_per_frame;
01429                 mxf->time_base = (AVRational){ 1001, 30000 };
01430                 mxf->timecode_base = 30;
01431             } else {
01432                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
01433                 return -1;
01434             }
01435             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
01436             if (s->oformat == &mxf_d10_muxer) {
01437                 if (st->codec->bit_rate == 50000000)
01438                     if (mxf->time_base.den == 25) sc->index = 3;
01439                     else                          sc->index = 5;
01440                 else if (st->codec->bit_rate == 40000000)
01441                     if (mxf->time_base.den == 25) sc->index = 7;
01442                     else                          sc->index = 9;
01443                 else if (st->codec->bit_rate == 30000000)
01444                     if (mxf->time_base.den == 25) sc->index = 11;
01445                     else                          sc->index = 13;
01446                 else {
01447                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
01448                     return -1;
01449                 }
01450 
01451                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
01452                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
01453                     mxf->time_base.num / (8*mxf->time_base.den);
01454                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01455                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
01456                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
01457             }
01458         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
01459             if (st->codec->sample_rate != 48000) {
01460                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
01461                 return -1;
01462             }
01463             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
01464             if (s->oformat == &mxf_d10_muxer) {
01465                 if (st->index != 1) {
01466                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
01467                     return -1;
01468                 }
01469                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
01470                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
01471                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
01472                 }
01473                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
01474             } else
01475             mxf->slice_count = 1;
01476         }
01477 
01478         if (!sc->index) {
01479             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
01480             if (sc->index == -1) {
01481                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
01482                        "codec not currently supported in container\n", i);
01483                 return -1;
01484             }
01485         }
01486 
01487         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
01488 
01489         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
01490         sc->track_essence_element_key[15] = present[sc->index];
01491         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
01492 
01493         if (!present[sc->index])
01494             mxf->essence_container_count++;
01495         present[sc->index]++;
01496     }
01497 
01498     if (s->oformat == &mxf_d10_muxer) {
01499         mxf->essence_container_count = 1;
01500     }
01501 
01502     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
01503         mxf_gen_umid(s);
01504 
01505     for (i = 0; i < s->nb_streams; i++) {
01506         MXFStreamContext *sc = s->streams[i]->priv_data;
01507         // update element count
01508         sc->track_essence_element_key[13] = present[sc->index];
01509         sc->order = AV_RB32(sc->track_essence_element_key+12);
01510     }
01511 
01512     if (s->timestamp)
01513         mxf->timestamp = mxf_parse_timestamp(s->timestamp);
01514     mxf->duration = -1;
01515 
01516     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
01517     if (!mxf->timecode_track)
01518         return AVERROR(ENOMEM);
01519     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
01520     if (!mxf->timecode_track->priv_data)
01521         return AVERROR(ENOMEM);
01522     mxf->timecode_track->index = -1;
01523 
01524     if (!samples_per_frame)
01525         samples_per_frame = PAL_samples_per_frame;
01526 
01527     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
01528         return -1;
01529 
01530     return 0;
01531 }
01532 
01533 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
01534 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 };
01535 
01536 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
01537 {
01538     return (0                                    << 31) | // color frame flag
01539            (drop                                 << 30) | // drop  frame flag
01540            ( ((frame % fps) / 10)                << 28) | // tens  of frames
01541            ( ((frame % fps) % 10)                << 24) | // units of frames
01542            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
01543            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
01544            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
01545            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
01546            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
01547            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
01548            (0                                    <<  7) | // b1
01549            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
01550            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
01551            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
01552 }
01553 
01554 static void mxf_write_system_item(AVFormatContext *s)
01555 {
01556     MXFContext *mxf = s->priv_data;
01557     ByteIOContext *pb = s->pb;
01558     unsigned frame;
01559     uint32_t time_code;
01560 
01561     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
01562 
01563     // write system metadata pack
01564     put_buffer(pb, system_metadata_pack_key, 16);
01565     klv_encode_ber4_length(pb, 57);
01566     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
01567     put_byte(pb, 0x04); // content package rate
01568     put_byte(pb, 0x00); // content package type
01569     put_be16(pb, 0x00); // channel handle
01570     put_be16(pb, frame); // continuity count
01571     if (mxf->essence_container_count > 1)
01572         put_buffer(pb, multiple_desc_ul, 16);
01573     else {
01574         MXFStreamContext *sc = s->streams[0]->priv_data;
01575         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
01576     }
01577     put_byte(pb, 0);
01578     put_be64(pb, 0);
01579     put_be64(pb, 0); // creation date/time stamp
01580 
01581     put_byte(pb, 0x81); // SMPTE 12M time code
01582     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
01583     put_be32(pb, time_code);
01584     put_be32(pb, 0); // binary group data
01585     put_be64(pb, 0);
01586 
01587     // write system metadata package set
01588     put_buffer(pb, system_metadata_package_set_key, 16);
01589     klv_encode_ber4_length(pb, 35);
01590     put_byte(pb, 0x83); // UMID
01591     put_be16(pb, 0x20);
01592     mxf_write_umid(s, 1);
01593 }
01594 
01595 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01596 {
01597     MXFContext *mxf = s->priv_data;
01598     ByteIOContext *pb = s->pb;
01599     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
01600         (8*mxf->time_base.den); // frame size
01601     int pad;
01602 
01603     packet_size += 16 + 4;
01604     packet_size += klv_fill_size(packet_size);
01605 
01606     klv_encode_ber4_length(pb, pkt->size);
01607     put_buffer(pb, pkt->data, pkt->size);
01608 
01609     // ensure CBR muxing by padding to correct video frame size
01610     pad = packet_size - pkt->size - 16 - 4;
01611     if (pad > 20) {
01612         put_buffer(s->pb, klv_fill_key, 16);
01613         pad -= 16 + 4;
01614         klv_encode_ber4_length(s->pb, pad);
01615         for (; pad; pad--)
01616             put_byte(s->pb, 0);
01617         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
01618     } else {
01619         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
01620         for (; pad > 0; pad--)
01621             put_byte(s->pb, 0);
01622     }
01623 }
01624 
01625 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
01626 {
01627     MXFContext *mxf = s->priv_data;
01628     ByteIOContext *pb = s->pb;
01629     int frame_size = pkt->size / st->codec->block_align;
01630     uint8_t *samples = pkt->data;
01631     uint8_t *end = pkt->data + pkt->size;
01632     int i;
01633 
01634     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
01635 
01636     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
01637     put_le16(pb, frame_size);
01638     put_byte(pb, (1<<st->codec->channels)-1);
01639 
01640     while (samples < end) {
01641         for (i = 0; i < st->codec->channels; i++) {
01642             uint32_t sample;
01643             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
01644                 sample = AV_RL24(samples)<< 4;
01645                 samples += 3;
01646             } else {
01647                 sample = AV_RL16(samples)<<12;
01648                 samples += 2;
01649             }
01650             put_le32(pb, sample | i);
01651         }
01652         for (; i < 8; i++)
01653             put_le32(pb, i);
01654     }
01655 }
01656 
01657 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
01658 {
01659     MXFContext *mxf = s->priv_data;
01660     ByteIOContext *pb = s->pb;
01661     AVStream *st = s->streams[pkt->stream_index];
01662     MXFStreamContext *sc = st->priv_data;
01663     int flags = 0;
01664 
01665     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
01666         mxf->index_entries = av_realloc(mxf->index_entries,
01667             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
01668         if (!mxf->index_entries) {
01669             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
01670             return -1;
01671         }
01672     }
01673 
01674     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
01675         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
01676             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
01677             return -1;
01678         }
01679     }
01680 
01681     if (!mxf->header_written) {
01682         if (mxf->edit_unit_byte_count) {
01683             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
01684             mxf_write_klv_fill(s);
01685             mxf_write_index_table_segment(s);
01686         } else {
01687             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
01688         }
01689         mxf->header_written = 1;
01690     }
01691 
01692     if (st->index == 0) {
01693         if (!mxf->edit_unit_byte_count &&
01694             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
01695             !(flags & 0x33)) { // I frame, Gop start
01696             mxf_write_klv_fill(s);
01697             mxf_write_partition(s, 1, 2, body_partition_key, 0);
01698 
01699             mxf_write_klv_fill(s);
01700             mxf_write_index_table_segment(s);
01701         }
01702 
01703         mxf_write_klv_fill(s);
01704         mxf_write_system_item(s);
01705 
01706         if (!mxf->edit_unit_byte_count) {
01707             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
01708             mxf->index_entries[mxf->edit_units_count].flags = flags;
01709             mxf->body_offset += KAG_SIZE; // size of system element
01710         }
01711         mxf->edit_units_count++;
01712     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
01713         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
01714             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
01715     }
01716 
01717     mxf_write_klv_fill(s);
01718     put_buffer(pb, sc->track_essence_element_key, 16); // write key
01719     if (s->oformat == &mxf_d10_muxer) {
01720         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
01721             mxf_write_d10_video_packet(s, st, pkt);
01722         else
01723             mxf_write_d10_audio_packet(s, st, pkt);
01724     } else {
01725         klv_encode_ber4_length(pb, pkt->size); // write length
01726         put_buffer(pb, pkt->data, pkt->size);
01727         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
01728     }
01729 
01730     put_flush_packet(pb);
01731 
01732     return 0;
01733 }
01734 
01735 static void mxf_write_random_index_pack(AVFormatContext *s)
01736 {
01737     MXFContext *mxf = s->priv_data;
01738     ByteIOContext *pb = s->pb;
01739     uint64_t pos = url_ftell(pb);
01740     int i;
01741 
01742     put_buffer(pb, random_index_pack_key, 16);
01743     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
01744 
01745     if (mxf->edit_unit_byte_count)
01746         put_be32(pb, 1); // BodySID of header partition
01747     else
01748         put_be32(pb, 0);
01749     put_be64(pb, 0); // offset of header partition
01750 
01751     for (i = 0; i < mxf->body_partitions_count; i++) {
01752         put_be32(pb, 1); // BodySID
01753         put_be64(pb, mxf->body_partition_offset[i]);
01754     }
01755 
01756     put_be32(pb, 0); // BodySID of footer partition
01757     put_be64(pb, mxf->footer_partition_offset);
01758 
01759     put_be32(pb, url_ftell(pb) - pos + 4);
01760 }
01761 
01762 static int mxf_write_footer(AVFormatContext *s)
01763 {
01764     MXFContext *mxf = s->priv_data;
01765     ByteIOContext *pb = s->pb;
01766 
01767     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
01768 
01769     mxf_write_klv_fill(s);
01770     mxf->footer_partition_offset = url_ftell(pb);
01771     if (mxf->edit_unit_byte_count) { // no need to repeat index
01772         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
01773     } else {
01774         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
01775 
01776         mxf_write_klv_fill(s);
01777         mxf_write_index_table_segment(s);
01778     }
01779 
01780     mxf_write_klv_fill(s);
01781     mxf_write_random_index_pack(s);
01782 
01783     if (!url_is_streamed(s->pb)) {
01784         url_fseek(pb, 0, SEEK_SET);
01785         if (mxf->edit_unit_byte_count) {
01786             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
01787             mxf_write_klv_fill(s);
01788             mxf_write_index_table_segment(s);
01789         } else {
01790             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
01791         }
01792     }
01793 
01794     put_flush_packet(pb);
01795 
01796     ff_audio_interleave_close(s);
01797 
01798     av_freep(&mxf->index_entries);
01799     av_freep(&mxf->body_partition_offset);
01800     av_freep(&mxf->timecode_track->priv_data);
01801     av_freep(&mxf->timecode_track);
01802 
01803     mxf_free(s);
01804 
01805     return 0;
01806 }
01807 
01808 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
01809 {
01810     int i, stream_count = 0;
01811 
01812     for (i = 0; i < s->nb_streams; i++)
01813         stream_count += !!s->streams[i]->last_in_packet_buffer;
01814 
01815     if (stream_count && (s->nb_streams == stream_count || flush)) {
01816         AVPacketList *pktl = s->packet_buffer;
01817         if (s->nb_streams != stream_count) {
01818             AVPacketList *last = NULL;
01819             // find last packet in edit unit
01820             while (pktl) {
01821                 if (!stream_count || pktl->pkt.stream_index == 0)
01822                     break;
01823                 last = pktl;
01824                 pktl = pktl->next;
01825                 stream_count--;
01826             }
01827             // purge packet queue
01828             while (pktl) {
01829                 AVPacketList *next = pktl->next;
01830 
01831                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
01832                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
01833                 av_free_packet(&pktl->pkt);
01834                 av_freep(&pktl);
01835                 pktl = next;
01836             }
01837             if (last)
01838                 last->next = NULL;
01839             else {
01840                 s->packet_buffer = NULL;
01841                 s->packet_buffer_end= NULL;
01842                 goto out;
01843             }
01844             pktl = s->packet_buffer;
01845         }
01846 
01847         *out = pktl->pkt;
01848         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
01849         s->packet_buffer = pktl->next;
01850         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
01851             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
01852         if(!s->packet_buffer)
01853             s->packet_buffer_end= NULL;
01854         av_freep(&pktl);
01855         return 1;
01856     } else {
01857     out:
01858         av_init_packet(out);
01859         return 0;
01860     }
01861 }
01862 
01863 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
01864 {
01865     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
01866     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
01867 
01868     return next->dts > pkt->dts ||
01869         (next->dts == pkt->dts && sc->order < sc2->order);
01870 }
01871 
01872 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
01873 {
01874     return ff_audio_rechunk_interleave(s, out, pkt, flush,
01875                                mxf_interleave_get_packet, mxf_compare_timestamps);
01876 }
01877 
01878 AVOutputFormat mxf_muxer = {
01879     "mxf",
01880     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
01881     "application/mxf",
01882     "mxf",
01883     sizeof(MXFContext),
01884     CODEC_ID_PCM_S16LE,
01885     CODEC_ID_MPEG2VIDEO,
01886     mxf_write_header,
01887     mxf_write_packet,
01888     mxf_write_footer,
01889     AVFMT_NOTIMESTAMPS,
01890     NULL,
01891     mxf_interleave,
01892 };
01893 
01894 AVOutputFormat mxf_d10_muxer = {
01895     "mxf_d10",
01896     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
01897     "application/mxf",
01898     NULL,
01899     sizeof(MXFContext),
01900     CODEC_ID_PCM_S16LE,
01901     CODEC_ID_MPEG2VIDEO,
01902     mxf_write_header,
01903     mxf_write_packet,
01904     mxf_write_footer,
01905     AVFMT_NOTIMESTAMPS,
01906     NULL,
01907     mxf_interleave,
01908 };