fix rip body sid when muxing cbr
[ffmpeg.git] / libavformat / mxfenc.c
1 /*
2  * MXF muxer
3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 /*
24  * References
25  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
26  * SMPTE 377M MXF File Format Specifications
27  * SMPTE 379M MXF Generic Container
28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29  * SMPTE RP210: SMPTE Metadata Dictionary
30  * SMPTE RP224: Registry of SMPTE Universal Labels
31  */
32
33 //#define DEBUG
34
35 #include <math.h>
36 #include <time.h>
37
38 #include "libavutil/fifo.h"
39 #include "libavcodec/bytestream.h"
40 #include "audiointerleave.h"
41 #include "avformat.h"
42 #include "mxf.h"
43
44 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
45 static const int PAL_samples_per_frame[]  = { 1920, 0 };
46
47 AVOutputFormat mxf_d10_muxer;
48
49 #define EDIT_UNITS_PER_BODY 250
50 #define KAG_SIZE 512
51
52 typedef struct {
53     int local_tag;
54     UID uid;
55 } MXFLocalTagPair;
56
57 typedef struct {
58     uint8_t flags;
59     uint64_t offset;
60     unsigned slice_offset; ///< offset of audio slice
61 } MXFIndexEntry;
62
63 typedef struct {
64     AudioInterleaveContext aic;
65     UID track_essence_element_key;
66     int index;            ///< index in mxf_essence_container_uls table
67     const UID *codec_ul;
68     int order;            ///< interleaving order if dts are equal
69     int interlaced;       ///< wether picture is interlaced
70     int temporal_reordering;
71     AVRational aspect_ratio; ///< display aspect ratio
72 } MXFStreamContext;
73
74 typedef struct {
75     UID container_ul;
76     UID element_ul;
77     UID codec_ul;
78     void (*write_desc)();
79 } MXFContainerEssenceEntry;
80
81 static const struct {
82     enum CodecID id;
83     int index;
84 } mxf_essence_mappings[] = {
85     { CODEC_ID_MPEG2VIDEO, 0 },
86     { CODEC_ID_PCM_S24LE,  1 },
87     { CODEC_ID_PCM_S16LE,  1 },
88     { 0 }
89 };
90
91 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
92 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
93 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
94 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
95 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
96
97 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
98     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
99       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
100       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
101       mxf_write_mpegvideo_desc },
102     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
103       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
104       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
105       mxf_write_aes3_desc },
106     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
107       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
108       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
109       mxf_write_wav_desc },
110     // D-10 625/50 PAL 50mb/s
111     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
112       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
113       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
114       mxf_write_cdci_desc },
115     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
116       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
117       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
118       mxf_write_generic_sound_desc },
119     // D-10 525/60 NTSC 50mb/s
120     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
121       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
122       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
123       mxf_write_cdci_desc },
124     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
125       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
126       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
127       mxf_write_generic_sound_desc },
128     // D-10 625/50 PAL 40mb/s
129     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
130       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
131       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
132       mxf_write_cdci_desc },
133     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
134       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
135       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
136       mxf_write_generic_sound_desc },
137     // D-10 525/60 NTSC 40mb/s
138     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
139       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
140       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
141       mxf_write_cdci_desc },
142     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
143       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
144       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
145       mxf_write_generic_sound_desc },
146     // D-10 625/50 PAL 30mb/s
147     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
148       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
149       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
150       mxf_write_cdci_desc },
151     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
152       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
153       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
154       mxf_write_generic_sound_desc },
155     // D-10 525/60 NTSC 30mb/s
156     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
157       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
158       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
159       mxf_write_cdci_desc },
160     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
161       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
162       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
163       mxf_write_generic_sound_desc },
164     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
165       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
166       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
167       NULL },
168 };
169
170 typedef struct MXFContext {
171     int64_t footer_partition_offset;
172     int essence_container_count;
173     AVRational time_base;
174     int header_written;
175     MXFIndexEntry *index_entries;
176     unsigned edit_units_count;
177     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
178     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
179     int last_indexed_edit_unit;
180     uint64_t *body_partition_offset;
181     unsigned body_partitions_count;
182     int last_key_index;  ///< index of last key frame
183     uint64_t duration;
184     AVStream *timecode_track;
185     int timecode_base;       ///< rounded time code base (25 or 30)
186     int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
187     int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
188     int edit_unit_byte_count; ///< fixed edit unit byte count
189     uint64_t body_offset;
190 } MXFContext;
191
192 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
193 static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
194
195 /**
196  * complete key for operation pattern, partitions, and primer pack
197  */
198 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
199 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
200 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
201 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
202 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
203 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
204 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
205 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
206 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
207
208 /**
209  * partial key for header metadata
210  */
211 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
212 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
213
214 /**
215  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
216  */
217 static const MXFLocalTagPair mxf_local_tag_batch[] = {
218     // preface set
219     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
220     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
221     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
222     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
223     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
224     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
225     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
226     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
227     // Identification
228     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
229     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
230     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
231     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
232     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
233     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
234     // Content Storage
235     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
236     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
237     // Essence Container Data
238     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
239     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
240     // Package
241     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
242     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
243     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
244     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
245     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
246     // Track
247     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
248     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
249     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
250     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
251     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
252     // Sequence
253     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
254     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
255     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
256     // Source Clip
257     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
258     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
259     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
260     // Timecode Component
261     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
262     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
263     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
264     // File Descriptor
265     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
266     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
267     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
268     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
269     // Generic Picture Essence Descriptor
270     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
271     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
272     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
273     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
274     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
275     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
276     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
277     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
278     // CDCI Picture Essence Descriptor
279     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
280     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
281     // Generic Sound Essence Descriptor
282     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
283     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
284     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
285     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
286     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
287     // Index Table Segment
288     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
289     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
290     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
291     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
292     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
293     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
294     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
295     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
296     // MPEG video Descriptor
297     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
298     // Wave Audio Essence Descriptor
299     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
300     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
301 };
302
303 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
304 {
305     put_buffer(pb, uuid_base, 12);
306     put_be16(pb, type);
307     put_be16(pb, value);
308 }
309
310 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
311 {
312     put_buffer(pb, umid_base, 16);
313     mxf_write_uuid(pb, type, value);
314 }
315
316 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
317 {
318     put_be32(pb, ref_count);
319     put_be32(pb, 16);
320 }
321
322 static int klv_ber_length(uint64_t len)
323 {
324     if (len < 128)
325         return 1;
326     else
327         return (av_log2(len) >> 3) + 2;
328 }
329
330 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
331 {
332     // Determine the best BER size
333     int size;
334     if (len < 128) {
335         //short form
336         put_byte(pb, len);
337         return 1;
338     }
339
340     size = (av_log2(len) >> 3) + 1;
341
342     // long form
343     put_byte(pb, 0x80 + size);
344     while(size) {
345         size--;
346         put_byte(pb, len >> 8 * size & 0xff);
347     }
348     return 0;
349 }
350
351 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
352 {
353     put_byte(pb, 0x80 + 3);
354     put_be24(pb, len);
355 }
356
357 /*
358  * Get essence container ul index
359  */
360 static int mxf_get_essence_container_ul_index(enum CodecID id)
361 {
362     int i;
363     for (i = 0; mxf_essence_mappings[i].id; i++)
364         if (mxf_essence_mappings[i].id == id)
365             return mxf_essence_mappings[i].index;
366     return -1;
367 }
368
369 static void mxf_write_primer_pack(AVFormatContext *s)
370 {
371     ByteIOContext *pb = s->pb;
372     int local_tag_number, i = 0;
373
374     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
375
376     put_buffer(pb, primer_pack_key, 16);
377     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
378
379     put_be32(pb, local_tag_number); // local_tag num
380     put_be32(pb, 18); // item size, always 18 according to the specs
381
382     for (i = 0; i < local_tag_number; i++) {
383         put_be16(pb, mxf_local_tag_batch[i].local_tag);
384         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
385     }
386 }
387
388 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
389 {
390     put_be16(pb, tag);
391     put_be16(pb, size);
392 }
393
394 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
395 {
396     put_buffer(pb, header_metadata_key, 13);
397     put_be24(pb, value);
398 }
399
400 static void mxf_free(AVFormatContext *s)
401 {
402     int i;
403
404     for (i = 0; i < s->nb_streams; i++) {
405         AVStream *st = s->streams[i];
406         av_freep(&st->priv_data);
407     }
408 }
409
410 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
411 {
412     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
413     while (uls->uid[0]) {
414         if (type == uls->id)
415             break;
416         uls++;
417     }
418     return uls;
419 }
420
421 static void mxf_write_essence_container_refs(AVFormatContext *s)
422 {
423     MXFContext *c = s->priv_data;
424     ByteIOContext *pb = s->pb;
425     int i;
426
427     mxf_write_refs_count(pb, c->essence_container_count);
428     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
429     for (i = 0; i < c->essence_container_count; i++) {
430         MXFStreamContext *sc = s->streams[i]->priv_data;
431         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
432     }
433 }
434
435 static void mxf_write_preface(AVFormatContext *s)
436 {
437     MXFContext *mxf = s->priv_data;
438     ByteIOContext *pb = s->pb;
439
440     mxf_write_metadata_key(pb, 0x012f00);
441     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
442     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
443
444     // write preface set uid
445     mxf_write_local_tag(pb, 16, 0x3C0A);
446     mxf_write_uuid(pb, Preface, 0);
447     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
448
449     // last modified date
450     mxf_write_local_tag(pb, 8, 0x3B02);
451     put_be64(pb, mxf->timestamp);
452
453     // write version
454     mxf_write_local_tag(pb, 2, 0x3B05);
455     put_be16(pb, 1);
456
457     // write identification_refs
458     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
459     mxf_write_refs_count(pb, 1);
460     mxf_write_uuid(pb, Identification, 0);
461
462     // write content_storage_refs
463     mxf_write_local_tag(pb, 16, 0x3B03);
464     mxf_write_uuid(pb, ContentStorage, 0);
465
466     // operational pattern
467     mxf_write_local_tag(pb, 16, 0x3B09);
468     if (s->nb_streams > 1) {
469         put_buffer(pb, op1a_ul, 14);
470         put_be16(pb, 0x0900); // multi track
471     } else {
472         put_buffer(pb, op1a_ul, 16);
473     }
474
475     // write essence_container_refs
476     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
477     mxf_write_essence_container_refs(s);
478
479     // write dm_scheme_refs
480     mxf_write_local_tag(pb, 8, 0x3B0B);
481     put_be64(pb, 0);
482 }
483
484 /*
485  * Write a local tag containing an ascii string as utf-16
486  */
487 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
488 {
489     int i, size = strlen(value);
490     mxf_write_local_tag(pb, size*2, tag);
491     for (i = 0; i < size; i++)
492         put_be16(pb, value[i]);
493 }
494
495 static void mxf_write_identification(AVFormatContext *s)
496 {
497     MXFContext *mxf = s->priv_data;
498     ByteIOContext *pb = s->pb;
499     const char *company = "FFmpeg";
500     const char *product = "OP1a Muxer";
501     const char *version;
502     int length;
503
504     mxf_write_metadata_key(pb, 0x013000);
505     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
506
507     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
508         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
509     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
510     klv_encode_ber_length(pb, length);
511
512     // write uid
513     mxf_write_local_tag(pb, 16, 0x3C0A);
514     mxf_write_uuid(pb, Identification, 0);
515     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
516
517     // write generation uid
518     mxf_write_local_tag(pb, 16, 0x3C09);
519     mxf_write_uuid(pb, Identification, 1);
520
521     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
522     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
523     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
524
525     // write product uid
526     mxf_write_local_tag(pb, 16, 0x3C05);
527     mxf_write_uuid(pb, Identification, 2);
528
529     // modification date
530     mxf_write_local_tag(pb, 8, 0x3C06);
531     put_be64(pb, mxf->timestamp);
532 }
533
534 static void mxf_write_content_storage(AVFormatContext *s)
535 {
536     ByteIOContext *pb = s->pb;
537
538     mxf_write_metadata_key(pb, 0x011800);
539     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
540     klv_encode_ber_length(pb, 92);
541
542     // write uid
543     mxf_write_local_tag(pb, 16, 0x3C0A);
544     mxf_write_uuid(pb, ContentStorage, 0);
545     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
546
547     // write package reference
548     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
549     mxf_write_refs_count(pb, 2);
550     mxf_write_uuid(pb, MaterialPackage, 0);
551     mxf_write_uuid(pb, SourcePackage, 0);
552
553     // write essence container data
554     mxf_write_local_tag(pb, 8 + 16, 0x1902);
555     mxf_write_refs_count(pb, 1);
556     mxf_write_uuid(pb, EssenceContainerData, 0);
557 }
558
559 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
560 {
561     MXFContext *mxf = s->priv_data;
562     ByteIOContext *pb = s->pb;
563     MXFStreamContext *sc = st->priv_data;
564
565     mxf_write_metadata_key(pb, 0x013b00);
566     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
567     klv_encode_ber_length(pb, 80);
568
569     // write track uid
570     mxf_write_local_tag(pb, 16, 0x3C0A);
571     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
572     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
573
574     // write track id
575     mxf_write_local_tag(pb, 4, 0x4801);
576     put_be32(pb, st->index);
577
578     // write track number
579     mxf_write_local_tag(pb, 4, 0x4804);
580     if (type == MaterialPackage)
581         put_be32(pb, 0); // track number of material package is 0
582     else
583         put_buffer(pb, sc->track_essence_element_key + 12, 4);
584
585     mxf_write_local_tag(pb, 8, 0x4B01);
586     put_be32(pb, mxf->time_base.den);
587     put_be32(pb, mxf->time_base.num);
588
589     // write origin
590     mxf_write_local_tag(pb, 8, 0x4B02);
591     put_be64(pb, 0);
592
593     // write sequence refs
594     mxf_write_local_tag(pb, 16, 0x4803);
595     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
596 }
597
598 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 };
599
600 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
601 {
602     MXFContext *mxf = s->priv_data;
603     ByteIOContext *pb = s->pb;
604
605     // find data define uls
606     mxf_write_local_tag(pb, 16, 0x0201);
607     if (st == mxf->timecode_track)
608         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
609     else {
610         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
611         put_buffer(pb, data_def_ul->uid, 16);
612     }
613
614     // write duration
615     mxf_write_local_tag(pb, 8, 0x0202);
616     put_be64(pb, mxf->duration);
617 }
618
619 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
620 {
621     MXFContext *mxf = s->priv_data;
622     ByteIOContext *pb = s->pb;
623     enum MXFMetadataSetType component;
624
625     mxf_write_metadata_key(pb, 0x010f00);
626     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
627     klv_encode_ber_length(pb, 80);
628
629     mxf_write_local_tag(pb, 16, 0x3C0A);
630     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
631
632     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
633     mxf_write_common_fields(s, st);
634
635     // write structural component
636     mxf_write_local_tag(pb, 16 + 8, 0x1001);
637     mxf_write_refs_count(pb, 1);
638     if (st == mxf->timecode_track)
639         component = TimecodeComponent;
640     else if (type == MaterialPackage)
641         component = SourceClip;
642     else
643         component = SourceClip+TypeBottom;
644     mxf_write_uuid(pb, component, st->index);
645 }
646
647 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st)
648 {
649     MXFContext *mxf = s->priv_data;
650     ByteIOContext *pb = s->pb;
651
652     mxf_write_metadata_key(pb, 0x011400);
653     klv_encode_ber_length(pb, 75);
654
655     // UID
656     mxf_write_local_tag(pb, 16, 0x3C0A);
657     mxf_write_uuid(pb, TimecodeComponent, st->index);
658
659     mxf_write_common_fields(s, st);
660
661     // Start Time Code
662     mxf_write_local_tag(pb, 8, 0x1501);
663     put_be64(pb, mxf->timecode_start);
664
665     // Rounded Time Code Base
666     mxf_write_local_tag(pb, 2, 0x1502);
667     put_be16(pb, mxf->timecode_base);
668
669     // Drop Frame
670     mxf_write_local_tag(pb, 1, 0x1503);
671     put_byte(pb, mxf->timecode_drop_frame);
672 }
673
674 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
675 {
676     ByteIOContext *pb = s->pb;
677     int i;
678
679     mxf_write_metadata_key(pb, 0x011100);
680     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
681     klv_encode_ber_length(pb, 108);
682
683     // write uid
684     mxf_write_local_tag(pb, 16, 0x3C0A);
685     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
686
687     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
688     mxf_write_common_fields(s, st);
689
690     // write start_position
691     mxf_write_local_tag(pb, 8, 0x1201);
692     put_be64(pb, 0);
693
694     // write source package uid, end of the reference
695     mxf_write_local_tag(pb, 32, 0x1101);
696     if (type == SourcePackage) {
697         for (i = 0; i < 4; i++)
698             put_be64(pb, 0);
699     } else
700         mxf_write_umid(pb, SourcePackage, 0);
701
702     // write source track id
703     mxf_write_local_tag(pb, 4, 0x1102);
704     if (type == SourcePackage)
705         put_be32(pb, 0);
706     else
707         put_be32(pb, st->index);
708 }
709
710 static void mxf_write_multi_descriptor(AVFormatContext *s)
711 {
712     MXFContext *mxf = s->priv_data;
713     ByteIOContext *pb = s->pb;
714     const uint8_t *ul;
715     int i;
716
717     mxf_write_metadata_key(pb, 0x014400);
718     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
719     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
720
721     mxf_write_local_tag(pb, 16, 0x3C0A);
722     mxf_write_uuid(pb, MultipleDescriptor, 0);
723     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
724
725     // write sample rate
726     mxf_write_local_tag(pb, 8, 0x3001);
727     put_be32(pb, mxf->time_base.den);
728     put_be32(pb, mxf->time_base.num);
729
730     // write essence container ul
731     mxf_write_local_tag(pb, 16, 0x3004);
732     if (mxf->essence_container_count > 1)
733         ul = multiple_desc_ul;
734     else {
735         MXFStreamContext *sc = s->streams[0]->priv_data;
736         ul = mxf_essence_container_uls[sc->index].container_ul;
737     }
738     put_buffer(pb, ul, 16);
739
740     // write sub descriptor refs
741     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
742     mxf_write_refs_count(pb, s->nb_streams);
743     for (i = 0; i < s->nb_streams; i++)
744         mxf_write_uuid(pb, SubDescriptor, i);
745 }
746
747 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
748 {
749     MXFContext *mxf = s->priv_data;
750     MXFStreamContext *sc = st->priv_data;
751     ByteIOContext *pb = s->pb;
752
753     put_buffer(pb, key, 16);
754     klv_encode_ber_length(pb, size+20+8+12+20);
755
756     mxf_write_local_tag(pb, 16, 0x3C0A);
757     mxf_write_uuid(pb, SubDescriptor, st->index);
758
759     mxf_write_local_tag(pb, 4, 0x3006);
760     put_be32(pb, st->index);
761
762     mxf_write_local_tag(pb, 8, 0x3001);
763     put_be32(pb, mxf->time_base.den);
764     put_be32(pb, mxf->time_base.num);
765
766     mxf_write_local_tag(pb, 16, 0x3004);
767     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
768 }
769
770 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
771 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
772 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
773 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
774 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
775
776 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
777 {
778     MXFStreamContext *sc = st->priv_data;
779     ByteIOContext *pb = s->pb;
780     int stored_height = (st->codec->height+15)/16*16;
781     int display_height;
782     int f1, f2;
783
784     mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
785
786     mxf_write_local_tag(pb, 4, 0x3203);
787     put_be32(pb, st->codec->width);
788
789     mxf_write_local_tag(pb, 4, 0x3202);
790     put_be32(pb, stored_height>>sc->interlaced);
791
792     mxf_write_local_tag(pb, 4, 0x3209);
793     put_be32(pb, st->codec->width);
794
795     if (st->codec->height == 608) // PAL + VBI
796         display_height = 576;
797     else if (st->codec->height == 512)  // NTSC + VBI
798         display_height = 486;
799     else
800         display_height = st->codec->height;
801
802     mxf_write_local_tag(pb, 4, 0x3208);
803     put_be32(pb, display_height>>sc->interlaced);
804
805     // component depth
806     mxf_write_local_tag(pb, 4, 0x3301);
807     put_be32(pb, 8);
808
809     // horizontal subsampling
810     mxf_write_local_tag(pb, 4, 0x3302);
811     put_be32(pb, 2);
812
813     // frame layout
814     mxf_write_local_tag(pb, 1, 0x320C);
815     put_byte(pb, sc->interlaced);
816
817     // video line map
818     switch (st->codec->height) {
819     case  576: f1 = 23; f2 = 336; break;
820     case  608: f1 =  7; f2 = 320; break;
821     case  480: f1 = 20; f2 = 283; break;
822     case  512: f1 =  7; f2 = 270; break;
823     case  720: f1 = 26; f2 =   0; break; // progressive
824     case 1080: f1 = 21; f2 = 584; break;
825     default:   f1 =  0; f2 =   0; break;
826     }
827
828     if (!sc->interlaced) {
829         f2  = 0;
830         f1 *= 2;
831     }
832
833     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
834     put_be32(pb, sc->interlaced ? 2 : 1);
835     put_be32(pb, 4);
836     put_be32(pb, f1);
837     if (sc->interlaced)
838         put_be32(pb, f2);
839
840     mxf_write_local_tag(pb, 8, 0x320E);
841     put_be32(pb, sc->aspect_ratio.num);
842     put_be32(pb, sc->aspect_ratio.den);
843
844     mxf_write_local_tag(pb, 16, 0x3201);
845     put_buffer(pb, *sc->codec_ul, 16);
846 }
847
848 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
849 {
850     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
851 }
852
853 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
854 {
855     ByteIOContext *pb = s->pb;
856
857     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8);
858
859     // bit rate
860     mxf_write_local_tag(pb, 4, 0x8000);
861     put_be32(pb, st->codec->bit_rate);
862 }
863
864 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
865 {
866     ByteIOContext *pb = s->pb;
867
868     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
869
870     // audio locked
871     mxf_write_local_tag(pb, 1, 0x3D02);
872     put_byte(pb, 1);
873
874     // write audio sampling rate
875     mxf_write_local_tag(pb, 8, 0x3D03);
876     put_be32(pb, st->codec->sample_rate);
877     put_be32(pb, 1);
878
879     mxf_write_local_tag(pb, 4, 0x3D07);
880     put_be32(pb, st->codec->channels);
881
882     mxf_write_local_tag(pb, 4, 0x3D01);
883     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
884 }
885
886 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
887 {
888     ByteIOContext *pb = s->pb;
889
890     mxf_write_generic_sound_common(s, st, key, size+6+8);
891
892     mxf_write_local_tag(pb, 2, 0x3D0A);
893     put_be16(pb, st->codec->block_align);
894
895     // avg bytes per sec
896     mxf_write_local_tag(pb, 4, 0x3D09);
897     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
898 }
899
900 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
901 {
902     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
903 }
904
905 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
906 {
907     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
908 }
909
910 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
911 {
912     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
913 }
914
915 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
916 {
917     MXFContext *mxf = s->priv_data;
918     ByteIOContext *pb = s->pb;
919     int i, track_count;
920
921     if (type == MaterialPackage) {
922         track_count = s->nb_streams + 1; // add timecode track
923         mxf_write_metadata_key(pb, 0x013600);
924         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
925         klv_encode_ber_length(pb, 92 + 16*track_count);
926     } else {
927         track_count = s->nb_streams;
928         mxf_write_metadata_key(pb, 0x013700);
929         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
930         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
931     }
932
933     // write uid
934     mxf_write_local_tag(pb, 16, 0x3C0A);
935     mxf_write_uuid(pb, type, 0);
936     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
937     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
938
939     // write package umid
940     mxf_write_local_tag(pb, 32, 0x4401);
941     mxf_write_umid(pb, type, 0);
942     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
943
944     // package creation date
945     mxf_write_local_tag(pb, 8, 0x4405);
946     put_be64(pb, mxf->timestamp);
947
948     // package modified date
949     mxf_write_local_tag(pb, 8, 0x4404);
950     put_be64(pb, mxf->timestamp);
951
952     // write track refs
953     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
954     mxf_write_refs_count(pb, track_count);
955     for (i = 0; i < s->nb_streams; i++)
956         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
957     if (type == MaterialPackage)
958         mxf_write_uuid(pb, Track, s->nb_streams); // timecode track
959
960     // write multiple descriptor reference
961     if (type == SourcePackage) {
962         mxf_write_local_tag(pb, 16, 0x4701);
963         if (s->nb_streams > 1) {
964             mxf_write_uuid(pb, MultipleDescriptor, 0);
965             mxf_write_multi_descriptor(s);
966         } else
967             mxf_write_uuid(pb, SubDescriptor, 0);
968     } else {
969         // write timecode track
970         mxf_write_track(s, mxf->timecode_track, type);
971         mxf_write_sequence(s, mxf->timecode_track, type);
972         mxf_write_timecode_component(s, mxf->timecode_track);
973     }
974
975     for (i = 0; i < s->nb_streams; i++) {
976         AVStream *st = s->streams[i];
977         mxf_write_track(s, st, type);
978         mxf_write_sequence(s, st, type);
979         mxf_write_structural_component(s, st, type);
980
981         if (type == SourcePackage) {
982             MXFStreamContext *sc = st->priv_data;
983             mxf_essence_container_uls[sc->index].write_desc(s, st);
984         }
985     }
986 }
987
988 static int mxf_write_essence_container_data(AVFormatContext *s)
989 {
990     ByteIOContext *pb = s->pb;
991
992     mxf_write_metadata_key(pb, 0x012300);
993     klv_encode_ber_length(pb, 72);
994
995     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
996     mxf_write_uuid(pb, EssenceContainerData, 0);
997
998     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
999     mxf_write_umid(pb, SourcePackage, 0);
1000
1001     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1002     put_be32(pb, 1);
1003
1004     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1005     put_be32(pb, 2);
1006
1007     return 0;
1008 }
1009
1010 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1011 {
1012     mxf_write_preface(s);
1013     mxf_write_identification(s);
1014     mxf_write_content_storage(s);
1015     mxf_write_package(s, MaterialPackage);
1016     mxf_write_package(s, SourcePackage);
1017     mxf_write_essence_container_data(s);
1018     return 0;
1019 }
1020
1021 static unsigned klv_fill_size(uint64_t size)
1022 {
1023     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1024     if (pad < 20) // smallest fill item possible
1025         return pad + KAG_SIZE;
1026     else
1027         return pad & (KAG_SIZE-1);
1028 }
1029
1030 static void mxf_write_index_table_segment(AVFormatContext *s)
1031 {
1032     MXFContext *mxf = s->priv_data;
1033     ByteIOContext *pb = s->pb;
1034     int i, j;
1035     int temporal_reordering = 0;
1036     int key_index = mxf->last_key_index;
1037
1038     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1039
1040     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1041         return;
1042
1043     put_buffer(pb, index_table_segment_key, 16);
1044
1045     if (mxf->edit_unit_byte_count) {
1046         klv_encode_ber_length(pb, 85);
1047     } else {
1048         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1049                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
1050     }
1051
1052     // instance id
1053     mxf_write_local_tag(pb, 16, 0x3C0A);
1054     mxf_write_uuid(pb, IndexTableSegment, 0);
1055
1056     // index edit rate
1057     mxf_write_local_tag(pb, 8, 0x3F0B);
1058     put_be32(pb, mxf->time_base.num);
1059     put_be32(pb, mxf->time_base.den);
1060
1061     // index start position
1062     mxf_write_local_tag(pb, 8, 0x3F0C);
1063     put_be64(pb, mxf->last_indexed_edit_unit);
1064
1065     // index duration
1066     mxf_write_local_tag(pb, 8, 0x3F0D);
1067     put_be64(pb, mxf->edit_units_count);
1068
1069     // edit unit byte count
1070     mxf_write_local_tag(pb, 4, 0x3F05);
1071     put_be32(pb, mxf->edit_unit_byte_count);
1072
1073     // index sid
1074     mxf_write_local_tag(pb, 4, 0x3F06);
1075     put_be32(pb, 2);
1076
1077     // body sid
1078     mxf_write_local_tag(pb, 4, 0x3F07);
1079     put_be32(pb, 1);
1080
1081     // real slice count - 1
1082     mxf_write_local_tag(pb, 1, 0x3F08);
1083     put_byte(pb, mxf->slice_count);
1084
1085     if (!mxf->edit_unit_byte_count) {
1086         // delta entry array
1087         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1088         put_be32(pb, s->nb_streams+1); // num of entries
1089         put_be32(pb, 6);               // size of one entry
1090         // write system item delta entry
1091         put_byte(pb, 0);
1092         put_byte(pb, 0); // slice entry
1093         put_be32(pb, 0); // element delta
1094         for (i = 0; i < s->nb_streams; i++) {
1095             AVStream *st = s->streams[i];
1096             MXFStreamContext *sc = st->priv_data;
1097             put_byte(pb, sc->temporal_reordering);
1098             if (sc->temporal_reordering)
1099                 temporal_reordering = 1;
1100             if (i == 0) { // video track
1101                 put_byte(pb, 0); // slice number
1102                 put_be32(pb, KAG_SIZE); // system item size including klv fill
1103             } else { // audio track
1104                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1105                 audio_frame_size += klv_fill_size(audio_frame_size);
1106                 put_byte(pb, 1);
1107                 put_be32(pb, (i-1)*audio_frame_size); // element delta
1108             }
1109         }
1110
1111         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1112         put_be32(pb, mxf->edit_units_count);  // num of entries
1113         put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1114         for (i = 0; i < mxf->edit_units_count; i++) {
1115             if (temporal_reordering) {
1116                 int temporal_offset = 0;
1117                 for (j = i+1; j < mxf->edit_units_count; j++) {
1118                     temporal_offset++;
1119                     if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1120                         // next is not b, so is reordered
1121                         if (!(mxf->index_entries[i+1].flags & 0x10)) {
1122                             if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1123                                 temporal_offset = 0;
1124                             else
1125                                 temporal_offset = -temporal_offset;
1126                         }
1127                         break;
1128                     }
1129                 }
1130                 put_byte(pb, temporal_offset);
1131             } else
1132                 put_byte(pb, 0);
1133             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1134                 mxf->last_key_index = key_index;
1135                 key_index = i;
1136             }
1137             if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1138                 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1139                 put_byte(pb, mxf->last_key_index - i);
1140             } else {
1141                 put_byte(pb, key_index - i); // key frame offset
1142                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1143                     mxf->last_key_index = key_index;
1144             }
1145             put_byte(pb, mxf->index_entries[i].flags);
1146             // stream offset
1147             put_be64(pb, mxf->index_entries[i].offset);
1148             if (s->nb_streams > 1)
1149                 put_be32(pb, mxf->index_entries[i].slice_offset);
1150         }
1151
1152         mxf->last_key_index = key_index - mxf->edit_units_count;
1153         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1154         mxf->edit_units_count = 0;
1155     }
1156 }
1157
1158 static void mxf_write_klv_fill(AVFormatContext *s)
1159 {
1160     unsigned pad = klv_fill_size(url_ftell(s->pb));
1161     if (pad) {
1162         put_buffer(s->pb, klv_fill_key, 16);
1163         pad -= 16 + 4;
1164         klv_encode_ber4_length(s->pb, pad);
1165         for (; pad; pad--)
1166             put_byte(s->pb, 0);
1167         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1168     }
1169 }
1170
1171 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1172                                 int indexsid,
1173                                 const uint8_t *key, int write_metadata)
1174 {
1175     MXFContext *mxf = s->priv_data;
1176     ByteIOContext *pb = s->pb;
1177     int64_t header_byte_count_offset;
1178     unsigned index_byte_count = 0;
1179     uint64_t partition_offset = url_ftell(pb);
1180
1181     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1182         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1183             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1184     else if (mxf->edit_unit_byte_count && indexsid)
1185         index_byte_count = 85;
1186
1187     if (index_byte_count) {
1188         // add encoded ber length
1189         index_byte_count += 16 + klv_ber_length(index_byte_count);
1190         index_byte_count += klv_fill_size(index_byte_count);
1191     }
1192
1193     if (!memcmp(key, body_partition_key, 16)) {
1194         mxf->body_partition_offset =
1195             av_realloc(mxf->body_partition_offset,
1196                        (mxf->body_partitions_count+1)*
1197                        sizeof(*mxf->body_partition_offset));
1198         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1199     }
1200
1201     // write klv
1202     put_buffer(pb, key, 16);
1203     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1204
1205     // write partition value
1206     put_be16(pb, 1); // majorVersion
1207     put_be16(pb, 2); // minorVersion
1208     put_be32(pb, KAG_SIZE); // KAGSize
1209
1210     put_be64(pb, partition_offset); // ThisPartition
1211
1212     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1213         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1214     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1215         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1216     else
1217         put_be64(pb, 0);
1218
1219     put_be64(pb, mxf->footer_partition_offset); // footerPartition
1220
1221     // set offset
1222     header_byte_count_offset = url_ftell(pb);
1223     put_be64(pb, 0); // headerByteCount, update later
1224
1225     // indexTable
1226     put_be64(pb, index_byte_count); // indexByteCount
1227     put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1228
1229     // BodyOffset
1230     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1231         put_be64(pb, mxf->body_offset);
1232     } else
1233         put_be64(pb, 0);
1234
1235     put_be32(pb, bodysid); // bodySID
1236
1237     // operational pattern
1238     if (s->nb_streams > 1) {
1239         put_buffer(pb, op1a_ul, 14);
1240         put_be16(pb, 0x0900); // multi track
1241     } else {
1242         put_buffer(pb, op1a_ul, 16);
1243     }
1244
1245     // essence container
1246     mxf_write_essence_container_refs(s);
1247
1248     if (write_metadata) {
1249         // mark the start of the headermetadata and calculate metadata size
1250         int64_t pos, start;
1251         unsigned header_byte_count;
1252
1253         mxf_write_klv_fill(s);
1254         start = url_ftell(s->pb);
1255         mxf_write_primer_pack(s);
1256         mxf_write_header_metadata_sets(s);
1257         pos = url_ftell(s->pb);
1258         header_byte_count = pos - start + klv_fill_size(pos);
1259
1260         // update header_byte_count
1261         url_fseek(pb, header_byte_count_offset, SEEK_SET);
1262         put_be64(pb, header_byte_count);
1263         url_fseek(pb, pos, SEEK_SET);
1264     }
1265
1266     put_flush_packet(pb);
1267 }
1268
1269 static const UID mxf_mpeg2_codec_uls[] = {
1270     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1271     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1272     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1273     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1274     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1275     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1276     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1277     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1278 };
1279
1280 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1281 {
1282     if (avctx->profile == 4) { // Main
1283         if (avctx->level == 8) // Main
1284             return avctx->gop_size ?
1285                 &mxf_mpeg2_codec_uls[1] :
1286                 &mxf_mpeg2_codec_uls[0];
1287         else if (avctx->level == 4) // High
1288             return avctx->gop_size ?
1289                 &mxf_mpeg2_codec_uls[5] :
1290                 &mxf_mpeg2_codec_uls[4];
1291     } else if (avctx->profile == 0) { // 422
1292         if (avctx->level == 5) // Main
1293             return avctx->gop_size ?
1294                 &mxf_mpeg2_codec_uls[3] :
1295                 &mxf_mpeg2_codec_uls[2];
1296         else if (avctx->level == 2) // High
1297             return avctx->gop_size ?
1298                 &mxf_mpeg2_codec_uls[7] :
1299                 &mxf_mpeg2_codec_uls[6];
1300     }
1301     return NULL;
1302 }
1303
1304 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1305 {
1306     MXFStreamContext *sc = st->priv_data;
1307     MXFContext *mxf = s->priv_data;
1308     uint32_t c = -1;
1309     int i;
1310
1311     *flags = 0;
1312
1313     for(i = 0; i < pkt->size - 4; i++) {
1314         c = (c<<8) + pkt->data[i];
1315         if (c == 0x1B5) {
1316             if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1317                 st->codec->profile = pkt->data[i+1] & 0x07;
1318                 st->codec->level   = pkt->data[i+2] >> 4;
1319             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1320                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1321                 break;
1322             }
1323         } else if (c == 0x1b8) { // gop
1324             if (i + 4 < pkt->size) {
1325                 if (pkt->data[i+4]>>6 & 0x01) // closed
1326                     *flags |= 0x80; // random access
1327                 if (!mxf->header_written) {
1328                     unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1329                     unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1330                     unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1331                     unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1332                     mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1333                     mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1334                         mxf->timecode_base + frames;
1335                     if (mxf->timecode_drop_frame) {
1336                         unsigned tminutes = 60 * hours + minutes;
1337                         mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1338                     }
1339                     av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1340                            hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1341                 }
1342             }
1343         } else if (c == 0x1b3) { // seq
1344             *flags |= 0x40;
1345             if (i + 4 < pkt->size) {
1346                 switch ((pkt->data[i+4]>>4) & 0xf) {
1347                 case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1348                 case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1349                 case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1350                 default:
1351                     av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1352                               st->codec->width, st->codec->height, 1024*1024);
1353                 }
1354             }
1355         } else if (c == 0x100) { // pic
1356             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1357             if (pict_type == 2) { // P frame
1358                 *flags |= 0x22;
1359                 st->codec->gop_size = 1;
1360             } else if (pict_type == 3) { // B frame
1361                 *flags |= 0x33;
1362                 sc->temporal_reordering = -1;
1363             } else if (!pict_type) {
1364                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1365                 return 0;
1366             }
1367         }
1368     }
1369     if (s->oformat != &mxf_d10_muxer)
1370         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1371     return !!sc->codec_ul;
1372 }
1373
1374 static uint64_t mxf_parse_timestamp(time_t timestamp)
1375 {
1376     struct tm *time = localtime(&timestamp);
1377     return (uint64_t)(time->tm_year+1900) << 48 |
1378            (uint64_t)(time->tm_mon+1)     << 40 |
1379            (uint64_t) time->tm_mday       << 32 |
1380                       time->tm_hour       << 24 |
1381                       time->tm_min        << 16 |
1382                       time->tm_sec        << 8;
1383 }
1384
1385 static int mxf_write_header(AVFormatContext *s)
1386 {
1387     MXFContext *mxf = s->priv_data;
1388     int i;
1389     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1390     const int *samples_per_frame = NULL;
1391
1392     for (i = 0; i < s->nb_streams; i++) {
1393         AVStream *st = s->streams[i];
1394         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1395         if (!sc)
1396             return AVERROR(ENOMEM);
1397         st->priv_data = sc;
1398
1399         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1400             if (i != 0) {
1401                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1402                 return -1;
1403             }
1404             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1405                 samples_per_frame = PAL_samples_per_frame;
1406                 mxf->time_base = (AVRational){ 1, 25 };
1407                 mxf->timecode_base = 25;
1408             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1409                 samples_per_frame = NTSC_samples_per_frame;
1410                 mxf->time_base = (AVRational){ 1001, 30000 };
1411                 mxf->timecode_base = 30;
1412             } else {
1413                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1414                 return -1;
1415             }
1416             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1417             if (s->oformat == &mxf_d10_muxer) {
1418                 if (st->codec->bit_rate == 50000000)
1419                     if (mxf->time_base.den == 25) sc->index = 3;
1420                     else                          sc->index = 5;
1421                 else if (st->codec->bit_rate == 40000000)
1422                     if (mxf->time_base.den == 25) sc->index = 7;
1423                     else                          sc->index = 9;
1424                 else if (st->codec->bit_rate == 30000000)
1425                     if (mxf->time_base.den == 25) sc->index = 11;
1426                     else                          sc->index = 13;
1427                 else {
1428                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1429                     return -1;
1430                 }
1431
1432                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1433                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1434                     mxf->time_base.num / (8*mxf->time_base.den);
1435                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1436                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1437                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1438             }
1439         } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1440             if (st->codec->sample_rate != 48000) {
1441                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1442                 return -1;
1443             }
1444             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1445             if (s->oformat == &mxf_d10_muxer) {
1446                 if (st->index != 1) {
1447                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1448                     return -1;
1449                 }
1450                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1451                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1452                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1453                 }
1454                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1455             } else
1456             mxf->slice_count = 1;
1457         }
1458
1459         if (!sc->index) {
1460             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1461             if (sc->index == -1) {
1462                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1463                        "codec not currently supported in container\n", i);
1464                 return -1;
1465             }
1466         }
1467
1468         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1469
1470         if (!present[sc->index]) {
1471             present[sc->index] = 1;
1472             mxf->essence_container_count++;
1473         } else
1474             present[sc->index]++;
1475
1476         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1477         sc->track_essence_element_key[15] = present[sc->index];
1478         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1479     }
1480
1481     if (s->oformat == &mxf_d10_muxer) {
1482         mxf->essence_container_count = 1;
1483     }
1484
1485     for (i = 0; i < s->nb_streams; i++) {
1486         MXFStreamContext *sc = s->streams[i]->priv_data;
1487         // update element count
1488         sc->track_essence_element_key[13] = present[sc->index];
1489         sc->order = AV_RB32(sc->track_essence_element_key+12);
1490     }
1491
1492     mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1493     mxf->duration = -1;
1494
1495     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1496     if (!mxf->timecode_track)
1497         return AVERROR(ENOMEM);
1498     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1499     if (!mxf->timecode_track->priv_data)
1500         return AVERROR(ENOMEM);
1501     mxf->timecode_track->index = s->nb_streams;
1502
1503     if (!samples_per_frame)
1504         samples_per_frame = PAL_samples_per_frame;
1505
1506     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1507         return -1;
1508
1509     return 0;
1510 }
1511
1512 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1513 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 };
1514
1515 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1516 {
1517     return (0                                    << 31) | // color frame flag
1518            (0                                    << 30) | // drop  frame flag
1519            ( ((frame % fps) / 10)                << 28) | // tens  of frames
1520            ( ((frame % fps) % 10)                << 24) | // units of frames
1521            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1522            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1523            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1524            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1525            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1526            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1527            (0                                    <<  7) | // b1
1528            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1529            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1530            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1531 }
1532
1533 static void mxf_write_system_item(AVFormatContext *s)
1534 {
1535     MXFContext *mxf = s->priv_data;
1536     ByteIOContext *pb = s->pb;
1537     unsigned frame;
1538     uint32_t time_code;
1539
1540     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1541
1542     // write system metadata pack
1543     put_buffer(pb, system_metadata_pack_key, 16);
1544     klv_encode_ber4_length(pb, 57);
1545     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1546     put_byte(pb, 0x04); // content package rate
1547     put_byte(pb, 0x00); // content package type
1548     put_be16(pb, 0x00); // channel handle
1549     put_be16(pb, frame); // continuity count
1550     if (mxf->essence_container_count > 1)
1551         put_buffer(pb, multiple_desc_ul, 16);
1552     else {
1553         MXFStreamContext *sc = s->streams[0]->priv_data;
1554         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1555     }
1556     put_byte(pb, 0);
1557     put_be64(pb, 0);
1558     put_be64(pb, 0); // creation date/time stamp
1559
1560     put_byte(pb, 0x81); // SMPTE 12M time code
1561     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1562     put_be32(pb, time_code);
1563     put_be32(pb, 0); // binary group data
1564     put_be64(pb, 0);
1565
1566     // write system metadata package set
1567     put_buffer(pb, system_metadata_package_set_key, 16);
1568     klv_encode_ber4_length(pb, 35);
1569     put_byte(pb, 0x83); // UMID
1570     put_be16(pb, 0x20);
1571     mxf_write_umid(pb, SourcePackage, 0);
1572 }
1573
1574 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1575 {
1576     MXFContext *mxf = s->priv_data;
1577     ByteIOContext *pb = s->pb;
1578     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1579         (8*mxf->time_base.den); // frame size
1580     int pad;
1581
1582     packet_size += 16 + 4;
1583     packet_size += klv_fill_size(packet_size);
1584
1585     klv_encode_ber4_length(pb, pkt->size);
1586     put_buffer(pb, pkt->data, pkt->size);
1587
1588     // ensure CBR muxing by padding to correct video frame size
1589     pad = packet_size - pkt->size - 16 - 4;
1590     if (pad > 20) {
1591         put_buffer(s->pb, klv_fill_key, 16);
1592         pad -= 16 + 4;
1593         klv_encode_ber4_length(s->pb, pad);
1594         for (; pad; pad--)
1595             put_byte(s->pb, 0);
1596         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1597     } else {
1598         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1599         for (; pad > 0; pad--)
1600             put_byte(s->pb, 0);
1601     }
1602 }
1603
1604 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1605 {
1606     MXFContext *mxf = s->priv_data;
1607     ByteIOContext *pb = s->pb;
1608     int frame_size = (pkt->size<<3) /
1609         (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1610     uint8_t *samples = pkt->data;
1611     uint8_t *end = pkt->data + pkt->size;
1612     int i;
1613
1614     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1615
1616     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1617     put_le16(pb, frame_size);
1618     put_byte(pb, (1<<st->codec->channels)-1);
1619
1620     while (samples < end) {
1621         for (i = 0; i < st->codec->channels; i++) {
1622             uint32_t sample;
1623             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1624                 sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1625                 samples += 3;
1626             } else {
1627                 sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1628                 samples += 2;
1629             }
1630             put_le32(pb, sample);
1631         }
1632         for (; i < 8; i++)
1633             put_le32(pb, 0);
1634     }
1635 }
1636
1637 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1638 {
1639     MXFContext *mxf = s->priv_data;
1640     ByteIOContext *pb = s->pb;
1641     AVStream *st = s->streams[pkt->stream_index];
1642     MXFStreamContext *sc = st->priv_data;
1643     int flags = 0;
1644
1645     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1646         mxf->index_entries = av_realloc(mxf->index_entries,
1647             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1648         if (!mxf->index_entries) {
1649             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1650             return -1;
1651         }
1652     }
1653
1654     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1655         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1656             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1657             return -1;
1658         }
1659     }
1660
1661     if (!mxf->header_written) {
1662         if (mxf->edit_unit_byte_count) {
1663             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1664             mxf_write_klv_fill(s);
1665             mxf_write_index_table_segment(s);
1666         } else {
1667             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1668         }
1669         mxf->header_written = 1;
1670     }
1671
1672     if (st->index == 0) {
1673         if (!mxf->edit_unit_byte_count &&
1674             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1675             !(flags & 0x33)) { // I frame, Gop start
1676             mxf_write_klv_fill(s);
1677             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1678
1679             mxf_write_klv_fill(s);
1680             mxf_write_index_table_segment(s);
1681         }
1682
1683         mxf_write_klv_fill(s);
1684         mxf_write_system_item(s);
1685
1686         if (!mxf->edit_unit_byte_count) {
1687             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1688             mxf->index_entries[mxf->edit_units_count].flags = flags;
1689             mxf->body_offset += KAG_SIZE; // size of system element
1690         }
1691         mxf->edit_units_count++;
1692     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1693         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1694             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1695     }
1696
1697     mxf_write_klv_fill(s);
1698     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1699     if (s->oformat == &mxf_d10_muxer) {
1700         if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1701             mxf_write_d10_video_packet(s, st, pkt);
1702         else
1703             mxf_write_d10_audio_packet(s, st, pkt);
1704     } else {
1705         klv_encode_ber4_length(pb, pkt->size); // write length
1706         put_buffer(pb, pkt->data, pkt->size);
1707         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1708     }
1709
1710     put_flush_packet(pb);
1711
1712     return 0;
1713 }
1714
1715 static void mxf_write_random_index_pack(AVFormatContext *s)
1716 {
1717     MXFContext *mxf = s->priv_data;
1718     ByteIOContext *pb = s->pb;
1719     uint64_t pos = url_ftell(pb);
1720     int i;
1721
1722     put_buffer(pb, random_index_pack_key, 16);
1723     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1724
1725     if (mxf->edit_unit_byte_count)
1726         put_be32(pb, 1); // BodySID of header partition
1727     else
1728         put_be32(pb, 0); // BodySID of header partition
1729     put_be64(pb, 0); // offset of header partition
1730
1731     for (i = 0; i < mxf->body_partitions_count; i++) {
1732         put_be32(pb, 1); // BodySID
1733         put_be64(pb, mxf->body_partition_offset[i]);
1734     }
1735
1736     put_be32(pb, 0); // BodySID of footer partition
1737     put_be64(pb, mxf->footer_partition_offset);
1738
1739     put_be32(pb, url_ftell(pb) - pos + 4);
1740 }
1741
1742 static int mxf_write_footer(AVFormatContext *s)
1743 {
1744     MXFContext *mxf = s->priv_data;
1745     ByteIOContext *pb = s->pb;
1746
1747     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1748
1749     mxf_write_klv_fill(s);
1750     mxf->footer_partition_offset = url_ftell(pb);
1751     if (mxf->edit_unit_byte_count) { // no need to repeat index
1752         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1753     } else {
1754         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1755
1756         mxf_write_klv_fill(s);
1757         mxf_write_index_table_segment(s);
1758     }
1759
1760     mxf_write_klv_fill(s);
1761     mxf_write_random_index_pack(s);
1762
1763     if (!url_is_streamed(s->pb)) {
1764         url_fseek(pb, 0, SEEK_SET);
1765         if (mxf->edit_unit_byte_count) {
1766             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1767             mxf_write_klv_fill(s);
1768             mxf_write_index_table_segment(s);
1769         } else {
1770             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1771         }
1772     }
1773
1774     ff_audio_interleave_close(s);
1775
1776     av_freep(&mxf->index_entries);
1777     av_freep(&mxf->body_partition_offset);
1778     av_freep(&mxf->timecode_track->priv_data);
1779     av_freep(&mxf->timecode_track);
1780
1781     mxf_free(s);
1782
1783     return 0;
1784 }
1785
1786 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1787 {
1788     AVPacketList *pktl;
1789     int stream_count = 0;
1790     int streams[MAX_STREAMS];
1791
1792     memset(streams, 0, sizeof(streams));
1793     pktl = s->packet_buffer;
1794     while (pktl) {
1795         //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1796         if (!streams[pktl->pkt.stream_index])
1797             stream_count++;
1798         streams[pktl->pkt.stream_index]++;
1799         pktl = pktl->next;
1800     }
1801
1802     if (stream_count && (s->nb_streams == stream_count || flush)) {
1803         pktl = s->packet_buffer;
1804         if (s->nb_streams != stream_count) {
1805             AVPacketList *last = NULL;
1806             // find last packet in edit unit
1807             while (pktl) {
1808                 if (!stream_count || pktl->pkt.stream_index == 0)
1809                     break;
1810                 last = pktl;
1811                 pktl = pktl->next;
1812                 stream_count--;
1813             }
1814             // purge packet queue
1815             while (pktl) {
1816                 AVPacketList *next = pktl->next;
1817                 av_free_packet(&pktl->pkt);
1818                 av_freep(&pktl);
1819                 pktl = next;
1820             }
1821             if (last)
1822                 last->next = NULL;
1823             else {
1824                 s->packet_buffer = NULL;
1825                 goto out;
1826             }
1827             pktl = s->packet_buffer;
1828         }
1829
1830         *out = pktl->pkt;
1831         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1832         s->packet_buffer = pktl->next;
1833         av_freep(&pktl);
1834         return 1;
1835     } else {
1836     out:
1837         av_init_packet(out);
1838         return 0;
1839     }
1840 }
1841
1842 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1843 {
1844     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1845     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1846
1847     return next->dts > pkt->dts ||
1848         (next->dts == pkt->dts && sc->order < sc2->order);
1849 }
1850
1851 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1852 {
1853     return ff_audio_rechunk_interleave(s, out, pkt, flush,
1854                                mxf_interleave_get_packet, mxf_compare_timestamps);
1855 }
1856
1857 AVOutputFormat mxf_muxer = {
1858     "mxf",
1859     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1860     "application/mxf",
1861     "mxf",
1862     sizeof(MXFContext),
1863     CODEC_ID_PCM_S16LE,
1864     CODEC_ID_MPEG2VIDEO,
1865     mxf_write_header,
1866     mxf_write_packet,
1867     mxf_write_footer,
1868     AVFMT_NOTIMESTAMPS,
1869     NULL,
1870     mxf_interleave,
1871 };
1872
1873 AVOutputFormat mxf_d10_muxer = {
1874     "mxf_d10",
1875     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1876     "application/mxf",
1877     NULL,
1878     sizeof(MXFContext),
1879     CODEC_ID_PCM_S16LE,
1880     CODEC_ID_MPEG2VIDEO,
1881     mxf_write_header,
1882     mxf_write_packet,
1883     mxf_write_footer,
1884     AVFMT_NOTIMESTAMPS,
1885     NULL,
1886     mxf_interleave,
1887 };