attempt to try to generate an random umid
[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 "libavutil/random_seed.h"
40 #include "libavcodec/bytestream.h"
41 #include "audiointerleave.h"
42 #include "avformat.h"
43 #include "mxf.h"
44
45 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
46 static const int PAL_samples_per_frame[]  = { 1920, 0 };
47
48 AVOutputFormat mxf_d10_muxer;
49
50 #define EDIT_UNITS_PER_BODY 250
51 #define KAG_SIZE 512
52
53 typedef struct {
54     int local_tag;
55     UID uid;
56 } MXFLocalTagPair;
57
58 typedef struct {
59     uint8_t flags;
60     uint64_t offset;
61     unsigned slice_offset; ///< offset of audio slice
62 } MXFIndexEntry;
63
64 typedef struct {
65     AudioInterleaveContext aic;
66     UID track_essence_element_key;
67     int index;            ///< index in mxf_essence_container_uls table
68     const UID *codec_ul;
69     int order;            ///< interleaving order if dts are equal
70     int interlaced;       ///< wether picture is interlaced
71     int temporal_reordering;
72     AVRational aspect_ratio; ///< display aspect ratio
73 } MXFStreamContext;
74
75 typedef struct {
76     UID container_ul;
77     UID element_ul;
78     UID codec_ul;
79     void (*write_desc)();
80 } MXFContainerEssenceEntry;
81
82 static const struct {
83     enum CodecID id;
84     int index;
85 } mxf_essence_mappings[] = {
86     { CODEC_ID_MPEG2VIDEO, 0 },
87     { CODEC_ID_PCM_S24LE,  1 },
88     { CODEC_ID_PCM_S16LE,  1 },
89     { 0 }
90 };
91
92 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
93 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
94 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
95 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
96 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
97
98 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
99     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
100       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
101       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
102       mxf_write_mpegvideo_desc },
103     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
104       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
105       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
106       mxf_write_aes3_desc },
107     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
108       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
109       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
110       mxf_write_wav_desc },
111     // D-10 625/50 PAL 50mb/s
112     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
113       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
114       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
115       mxf_write_cdci_desc },
116     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
117       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
118       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
119       mxf_write_generic_sound_desc },
120     // D-10 525/60 NTSC 50mb/s
121     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
122       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
123       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
124       mxf_write_cdci_desc },
125     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
126       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
128       mxf_write_generic_sound_desc },
129     // D-10 625/50 PAL 40mb/s
130     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
131       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
132       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
133       mxf_write_cdci_desc },
134     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
135       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
137       mxf_write_generic_sound_desc },
138     // D-10 525/60 NTSC 40mb/s
139     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
140       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
141       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
142       mxf_write_cdci_desc },
143     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
144       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
145       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
146       mxf_write_generic_sound_desc },
147     // D-10 625/50 PAL 30mb/s
148     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
149       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
150       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
151       mxf_write_cdci_desc },
152     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
153       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
154       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
155       mxf_write_generic_sound_desc },
156     // D-10 525/60 NTSC 30mb/s
157     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
158       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
159       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
160       mxf_write_cdci_desc },
161     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
162       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
163       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
164       mxf_write_generic_sound_desc },
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       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
168       NULL },
169 };
170
171 typedef struct MXFContext {
172     int64_t footer_partition_offset;
173     int essence_container_count;
174     AVRational time_base;
175     int header_written;
176     MXFIndexEntry *index_entries;
177     unsigned edit_units_count;
178     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
179     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
180     int last_indexed_edit_unit;
181     uint64_t *body_partition_offset;
182     unsigned body_partitions_count;
183     int last_key_index;  ///< index of last key frame
184     uint64_t duration;
185     AVStream *timecode_track;
186     int timecode_base;       ///< rounded time code base (25 or 30)
187     int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
188     int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
189     int edit_unit_byte_count; ///< fixed edit unit byte count
190     uint64_t body_offset;
191     uint32_t instance_number;
192     uint8_t umid[16];        ///< unique material identifier
193 } MXFContext;
194
195 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
196 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
197
198 /**
199  * complete key for operation pattern, partitions, and primer pack
200  */
201 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
202 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
203 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
204 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
205 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
206 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
207 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
208 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
209 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
210
211 /**
212  * partial key for header metadata
213  */
214 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
215 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
216
217 /**
218  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
219  */
220 static const MXFLocalTagPair mxf_local_tag_batch[] = {
221     // preface set
222     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
223     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
224     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
225     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
226     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
227     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
228     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
229     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
230     // Identification
231     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
232     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
233     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
234     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
235     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
236     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
237     // Content Storage
238     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
239     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
240     // Essence Container Data
241     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
242     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
243     // Package
244     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
245     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
246     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
247     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
248     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
249     // Track
250     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
251     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
252     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
253     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
254     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
255     // Sequence
256     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
257     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
258     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
259     // Source Clip
260     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
261     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
262     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
263     // Timecode Component
264     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
265     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
266     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
267     // File Descriptor
268     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
269     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
270     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
271     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
272     // Generic Picture Essence Descriptor
273     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
274     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
275     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
276     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
277     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
278     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
279     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
280     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
281     // CDCI Picture Essence Descriptor
282     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
283     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
284     // Generic Sound Essence Descriptor
285     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
286     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
287     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
288     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
289     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
290     // Index Table Segment
291     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
292     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
293     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
294     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
295     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
296     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
297     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
298     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
299     // MPEG video Descriptor
300     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
301     // Wave Audio Essence Descriptor
302     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
303     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
304 };
305
306 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
307 {
308     put_buffer(pb, uuid_base, 12);
309     put_be16(pb, type);
310     put_be16(pb, value);
311 }
312
313 static void mxf_write_umid(AVFormatContext *s, int type)
314 {
315     MXFContext *mxf = s->priv_data;
316     put_buffer(s->pb, umid_ul, 13);
317     put_be24(s->pb, mxf->instance_number);
318     put_buffer(s->pb, mxf->umid, 15);
319     put_buffer(s->pb, mxf->umid, type);
320 }
321
322 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
323 {
324     put_be32(pb, ref_count);
325     put_be32(pb, 16);
326 }
327
328 static int klv_ber_length(uint64_t len)
329 {
330     if (len < 128)
331         return 1;
332     else
333         return (av_log2(len) >> 3) + 2;
334 }
335
336 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
337 {
338     // Determine the best BER size
339     int size;
340     if (len < 128) {
341         //short form
342         put_byte(pb, len);
343         return 1;
344     }
345
346     size = (av_log2(len) >> 3) + 1;
347
348     // long form
349     put_byte(pb, 0x80 + size);
350     while(size) {
351         size--;
352         put_byte(pb, len >> 8 * size & 0xff);
353     }
354     return 0;
355 }
356
357 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
358 {
359     put_byte(pb, 0x80 + 3);
360     put_be24(pb, len);
361 }
362
363 /*
364  * Get essence container ul index
365  */
366 static int mxf_get_essence_container_ul_index(enum CodecID id)
367 {
368     int i;
369     for (i = 0; mxf_essence_mappings[i].id; i++)
370         if (mxf_essence_mappings[i].id == id)
371             return mxf_essence_mappings[i].index;
372     return -1;
373 }
374
375 static void mxf_write_primer_pack(AVFormatContext *s)
376 {
377     ByteIOContext *pb = s->pb;
378     int local_tag_number, i = 0;
379
380     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
381
382     put_buffer(pb, primer_pack_key, 16);
383     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
384
385     put_be32(pb, local_tag_number); // local_tag num
386     put_be32(pb, 18); // item size, always 18 according to the specs
387
388     for (i = 0; i < local_tag_number; i++) {
389         put_be16(pb, mxf_local_tag_batch[i].local_tag);
390         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
391     }
392 }
393
394 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
395 {
396     put_be16(pb, tag);
397     put_be16(pb, size);
398 }
399
400 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
401 {
402     put_buffer(pb, header_metadata_key, 13);
403     put_be24(pb, value);
404 }
405
406 static void mxf_free(AVFormatContext *s)
407 {
408     int i;
409
410     for (i = 0; i < s->nb_streams; i++) {
411         AVStream *st = s->streams[i];
412         av_freep(&st->priv_data);
413     }
414 }
415
416 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
417 {
418     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
419     while (uls->uid[0]) {
420         if (type == uls->id)
421             break;
422         uls++;
423     }
424     return uls;
425 }
426
427 static void mxf_write_essence_container_refs(AVFormatContext *s)
428 {
429     MXFContext *c = s->priv_data;
430     ByteIOContext *pb = s->pb;
431     int i;
432
433     mxf_write_refs_count(pb, c->essence_container_count);
434     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
435     for (i = 0; i < c->essence_container_count; i++) {
436         MXFStreamContext *sc = s->streams[i]->priv_data;
437         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
438     }
439 }
440
441 static void mxf_write_preface(AVFormatContext *s)
442 {
443     MXFContext *mxf = s->priv_data;
444     ByteIOContext *pb = s->pb;
445
446     mxf_write_metadata_key(pb, 0x012f00);
447     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
448     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
449
450     // write preface set uid
451     mxf_write_local_tag(pb, 16, 0x3C0A);
452     mxf_write_uuid(pb, Preface, 0);
453     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
454
455     // last modified date
456     mxf_write_local_tag(pb, 8, 0x3B02);
457     put_be64(pb, mxf->timestamp);
458
459     // write version
460     mxf_write_local_tag(pb, 2, 0x3B05);
461     put_be16(pb, 258); // v1.2
462
463     // write identification_refs
464     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
465     mxf_write_refs_count(pb, 1);
466     mxf_write_uuid(pb, Identification, 0);
467
468     // write content_storage_refs
469     mxf_write_local_tag(pb, 16, 0x3B03);
470     mxf_write_uuid(pb, ContentStorage, 0);
471
472     // operational pattern
473     mxf_write_local_tag(pb, 16, 0x3B09);
474     put_buffer(pb, op1a_ul, 16);
475
476     // write essence_container_refs
477     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
478     mxf_write_essence_container_refs(s);
479
480     // write dm_scheme_refs
481     mxf_write_local_tag(pb, 8, 0x3B0B);
482     put_be64(pb, 0);
483 }
484
485 /*
486  * Write a local tag containing an ascii string as utf-16
487  */
488 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
489 {
490     int i, size = strlen(value);
491     mxf_write_local_tag(pb, size*2, tag);
492     for (i = 0; i < size; i++)
493         put_be16(pb, value[i]);
494 }
495
496 static void mxf_write_identification(AVFormatContext *s)
497 {
498     MXFContext *mxf = s->priv_data;
499     ByteIOContext *pb = s->pb;
500     const char *company = "FFmpeg";
501     const char *product = "OP1a Muxer";
502     const char *version;
503     int length;
504
505     mxf_write_metadata_key(pb, 0x013000);
506     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
507
508     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
509         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
510     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
511     klv_encode_ber_length(pb, length);
512
513     // write uid
514     mxf_write_local_tag(pb, 16, 0x3C0A);
515     mxf_write_uuid(pb, Identification, 0);
516     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
517
518     // write generation uid
519     mxf_write_local_tag(pb, 16, 0x3C09);
520     mxf_write_uuid(pb, Identification, 1);
521
522     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
523     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
524     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
525
526     // write product uid
527     mxf_write_local_tag(pb, 16, 0x3C05);
528     mxf_write_uuid(pb, Identification, 2);
529
530     // modification date
531     mxf_write_local_tag(pb, 8, 0x3C06);
532     put_be64(pb, mxf->timestamp);
533 }
534
535 static void mxf_write_content_storage(AVFormatContext *s)
536 {
537     ByteIOContext *pb = s->pb;
538
539     mxf_write_metadata_key(pb, 0x011800);
540     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
541     klv_encode_ber_length(pb, 92);
542
543     // write uid
544     mxf_write_local_tag(pb, 16, 0x3C0A);
545     mxf_write_uuid(pb, ContentStorage, 0);
546     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
547
548     // write package reference
549     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
550     mxf_write_refs_count(pb, 2);
551     mxf_write_uuid(pb, MaterialPackage, 0);
552     mxf_write_uuid(pb, SourcePackage, 0);
553
554     // write essence container data
555     mxf_write_local_tag(pb, 8 + 16, 0x1902);
556     mxf_write_refs_count(pb, 1);
557     mxf_write_uuid(pb, EssenceContainerData, 0);
558 }
559
560 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
561 {
562     MXFContext *mxf = s->priv_data;
563     ByteIOContext *pb = s->pb;
564     MXFStreamContext *sc = st->priv_data;
565
566     mxf_write_metadata_key(pb, 0x013b00);
567     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
568     klv_encode_ber_length(pb, 80);
569
570     // write track uid
571     mxf_write_local_tag(pb, 16, 0x3C0A);
572     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
573     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
574
575     // write track id
576     mxf_write_local_tag(pb, 4, 0x4801);
577     put_be32(pb, st->index+2);
578
579     // write track number
580     mxf_write_local_tag(pb, 4, 0x4804);
581     if (type == MaterialPackage)
582         put_be32(pb, 0); // track number of material package is 0
583     else
584         put_buffer(pb, sc->track_essence_element_key + 12, 4);
585
586     mxf_write_local_tag(pb, 8, 0x4B01);
587     put_be32(pb, mxf->time_base.den);
588     put_be32(pb, mxf->time_base.num);
589
590     // write origin
591     mxf_write_local_tag(pb, 8, 0x4B02);
592     put_be64(pb, 0);
593
594     // write sequence refs
595     mxf_write_local_tag(pb, 16, 0x4803);
596     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
597 }
598
599 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 };
600
601 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
602 {
603     MXFContext *mxf = s->priv_data;
604     ByteIOContext *pb = s->pb;
605
606     // find data define uls
607     mxf_write_local_tag(pb, 16, 0x0201);
608     if (st == mxf->timecode_track)
609         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
610     else {
611         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
612         put_buffer(pb, data_def_ul->uid, 16);
613     }
614
615     // write duration
616     mxf_write_local_tag(pb, 8, 0x0202);
617     put_be64(pb, mxf->duration);
618 }
619
620 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
621 {
622     MXFContext *mxf = s->priv_data;
623     ByteIOContext *pb = s->pb;
624     enum MXFMetadataSetType component;
625
626     mxf_write_metadata_key(pb, 0x010f00);
627     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
628     klv_encode_ber_length(pb, 80);
629
630     mxf_write_local_tag(pb, 16, 0x3C0A);
631     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
632
633     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
634     mxf_write_common_fields(s, st);
635
636     // write structural component
637     mxf_write_local_tag(pb, 16 + 8, 0x1001);
638     mxf_write_refs_count(pb, 1);
639     if (st == mxf->timecode_track)
640         component = TimecodeComponent;
641     else
642         component = SourceClip;
643     if (type == SourcePackage)
644         component += TypeBottom;
645     mxf_write_uuid(pb, component, st->index);
646 }
647
648 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
649 {
650     MXFContext *mxf = s->priv_data;
651     ByteIOContext *pb = s->pb;
652
653     mxf_write_metadata_key(pb, 0x011400);
654     klv_encode_ber_length(pb, 75);
655
656     // UID
657     mxf_write_local_tag(pb, 16, 0x3C0A);
658     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
659                    TimecodeComponent + TypeBottom, st->index);
660
661     mxf_write_common_fields(s, st);
662
663     // Start Time Code
664     mxf_write_local_tag(pb, 8, 0x1501);
665     put_be64(pb, mxf->timecode_start);
666
667     // Rounded Time Code Base
668     mxf_write_local_tag(pb, 2, 0x1502);
669     put_be16(pb, mxf->timecode_base);
670
671     // Drop Frame
672     mxf_write_local_tag(pb, 1, 0x1503);
673     put_byte(pb, mxf->timecode_drop_frame);
674 }
675
676 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
677 {
678     ByteIOContext *pb = s->pb;
679     int i;
680
681     mxf_write_metadata_key(pb, 0x011100);
682     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
683     klv_encode_ber_length(pb, 108);
684
685     // write uid
686     mxf_write_local_tag(pb, 16, 0x3C0A);
687     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
688
689     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
690     mxf_write_common_fields(s, st);
691
692     // write start_position
693     mxf_write_local_tag(pb, 8, 0x1201);
694     put_be64(pb, 0);
695
696     // write source package uid, end of the reference
697     mxf_write_local_tag(pb, 32, 0x1101);
698     if (type == SourcePackage) {
699         for (i = 0; i < 4; i++)
700             put_be64(pb, 0);
701     } else
702         mxf_write_umid(s, 1);
703
704     // write source track id
705     mxf_write_local_tag(pb, 4, 0x1102);
706     if (type == SourcePackage)
707         put_be32(pb, 0);
708     else
709         put_be32(pb, st->index+2);
710 }
711
712 static void mxf_write_multi_descriptor(AVFormatContext *s)
713 {
714     MXFContext *mxf = s->priv_data;
715     ByteIOContext *pb = s->pb;
716     const uint8_t *ul;
717     int i;
718
719     mxf_write_metadata_key(pb, 0x014400);
720     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
721     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
722
723     mxf_write_local_tag(pb, 16, 0x3C0A);
724     mxf_write_uuid(pb, MultipleDescriptor, 0);
725     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
726
727     // write sample rate
728     mxf_write_local_tag(pb, 8, 0x3001);
729     put_be32(pb, mxf->time_base.den);
730     put_be32(pb, mxf->time_base.num);
731
732     // write essence container ul
733     mxf_write_local_tag(pb, 16, 0x3004);
734     if (mxf->essence_container_count > 1)
735         ul = multiple_desc_ul;
736     else {
737         MXFStreamContext *sc = s->streams[0]->priv_data;
738         ul = mxf_essence_container_uls[sc->index].container_ul;
739     }
740     put_buffer(pb, ul, 16);
741
742     // write sub descriptor refs
743     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
744     mxf_write_refs_count(pb, s->nb_streams);
745     for (i = 0; i < s->nb_streams; i++)
746         mxf_write_uuid(pb, SubDescriptor, i);
747 }
748
749 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
750 {
751     MXFContext *mxf = s->priv_data;
752     MXFStreamContext *sc = st->priv_data;
753     ByteIOContext *pb = s->pb;
754
755     put_buffer(pb, key, 16);
756     klv_encode_ber_length(pb, size+20+8+12+20);
757
758     mxf_write_local_tag(pb, 16, 0x3C0A);
759     mxf_write_uuid(pb, SubDescriptor, st->index);
760
761     mxf_write_local_tag(pb, 4, 0x3006);
762     put_be32(pb, st->index+2);
763
764     mxf_write_local_tag(pb, 8, 0x3001);
765     put_be32(pb, mxf->time_base.den);
766     put_be32(pb, mxf->time_base.num);
767
768     mxf_write_local_tag(pb, 16, 0x3004);
769     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
770 }
771
772 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
773 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
774 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
775 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
776 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
777
778 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
779 {
780     MXFStreamContext *sc = st->priv_data;
781     ByteIOContext *pb = s->pb;
782     int stored_height = (st->codec->height+15)/16*16;
783     int display_height;
784     int f1, f2;
785
786     mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
787
788     mxf_write_local_tag(pb, 4, 0x3203);
789     put_be32(pb, st->codec->width);
790
791     mxf_write_local_tag(pb, 4, 0x3202);
792     put_be32(pb, stored_height>>sc->interlaced);
793
794     mxf_write_local_tag(pb, 4, 0x3209);
795     put_be32(pb, st->codec->width);
796
797     if (st->codec->height == 608) // PAL + VBI
798         display_height = 576;
799     else if (st->codec->height == 512)  // NTSC + VBI
800         display_height = 486;
801     else
802         display_height = st->codec->height;
803
804     mxf_write_local_tag(pb, 4, 0x3208);
805     put_be32(pb, display_height>>sc->interlaced);
806
807     // component depth
808     mxf_write_local_tag(pb, 4, 0x3301);
809     put_be32(pb, 8);
810
811     // horizontal subsampling
812     mxf_write_local_tag(pb, 4, 0x3302);
813     put_be32(pb, 2);
814
815     // frame layout
816     mxf_write_local_tag(pb, 1, 0x320C);
817     put_byte(pb, sc->interlaced);
818
819     // video line map
820     switch (st->codec->height) {
821     case  576: f1 = 23; f2 = 336; break;
822     case  608: f1 =  7; f2 = 320; break;
823     case  480: f1 = 20; f2 = 283; break;
824     case  512: f1 =  7; f2 = 270; break;
825     case  720: f1 = 26; f2 =   0; break; // progressive
826     case 1080: f1 = 21; f2 = 584; break;
827     default:   f1 =  0; f2 =   0; break;
828     }
829
830     if (!sc->interlaced) {
831         f2  = 0;
832         f1 *= 2;
833     }
834
835     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
836     put_be32(pb, sc->interlaced ? 2 : 1);
837     put_be32(pb, 4);
838     put_be32(pb, f1);
839     if (sc->interlaced)
840         put_be32(pb, f2);
841
842     mxf_write_local_tag(pb, 8, 0x320E);
843     put_be32(pb, sc->aspect_ratio.num);
844     put_be32(pb, sc->aspect_ratio.den);
845
846     mxf_write_local_tag(pb, 16, 0x3201);
847     put_buffer(pb, *sc->codec_ul, 16);
848 }
849
850 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
851 {
852     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
853 }
854
855 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
856 {
857     ByteIOContext *pb = s->pb;
858
859     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8);
860
861     // bit rate
862     mxf_write_local_tag(pb, 4, 0x8000);
863     put_be32(pb, st->codec->bit_rate);
864 }
865
866 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
867 {
868     ByteIOContext *pb = s->pb;
869
870     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
871
872     // audio locked
873     mxf_write_local_tag(pb, 1, 0x3D02);
874     put_byte(pb, 1);
875
876     // write audio sampling rate
877     mxf_write_local_tag(pb, 8, 0x3D03);
878     put_be32(pb, st->codec->sample_rate);
879     put_be32(pb, 1);
880
881     mxf_write_local_tag(pb, 4, 0x3D07);
882     put_be32(pb, st->codec->channels);
883
884     mxf_write_local_tag(pb, 4, 0x3D01);
885     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
886 }
887
888 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
889 {
890     ByteIOContext *pb = s->pb;
891
892     mxf_write_generic_sound_common(s, st, key, size+6+8);
893
894     mxf_write_local_tag(pb, 2, 0x3D0A);
895     put_be16(pb, st->codec->block_align);
896
897     // avg bytes per sec
898     mxf_write_local_tag(pb, 4, 0x3D09);
899     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
900 }
901
902 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
903 {
904     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
905 }
906
907 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
908 {
909     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
910 }
911
912 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
913 {
914     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
915 }
916
917 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
918 {
919     MXFContext *mxf = s->priv_data;
920     ByteIOContext *pb = s->pb;
921     int i, track_count = s->nb_streams+1;
922
923     if (type == MaterialPackage) {
924         mxf_write_metadata_key(pb, 0x013600);
925         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
926         klv_encode_ber_length(pb, 92 + 16*track_count);
927     } else {
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(s, type == SourcePackage);
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     mxf_write_uuid(pb, type == MaterialPackage ? Track :
956                    Track + TypeBottom, -1); // timecode track
957     for (i = 0; i < s->nb_streams; i++)
958         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
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     }
969
970     // write timecode track
971     mxf_write_track(s, mxf->timecode_track, type);
972     mxf_write_sequence(s, mxf->timecode_track, type);
973     mxf_write_timecode_component(s, mxf->timecode_track, type);
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(s, 1);
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, 80);
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.den);
1059     put_be32(pb, mxf->time_base.num);
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     if (!mxf->edit_unit_byte_count) {
1082         // real slice count - 1
1083         mxf_write_local_tag(pb, 1, 0x3F08);
1084         put_byte(pb, mxf->slice_count);
1085
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 = 80;
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     put_buffer(pb, op1a_ul, 16);
1239
1240     // essence container
1241     mxf_write_essence_container_refs(s);
1242
1243     if (write_metadata) {
1244         // mark the start of the headermetadata and calculate metadata size
1245         int64_t pos, start;
1246         unsigned header_byte_count;
1247
1248         mxf_write_klv_fill(s);
1249         start = url_ftell(s->pb);
1250         mxf_write_primer_pack(s);
1251         mxf_write_header_metadata_sets(s);
1252         pos = url_ftell(s->pb);
1253         header_byte_count = pos - start + klv_fill_size(pos);
1254
1255         // update header_byte_count
1256         url_fseek(pb, header_byte_count_offset, SEEK_SET);
1257         put_be64(pb, header_byte_count);
1258         url_fseek(pb, pos, SEEK_SET);
1259     }
1260
1261     put_flush_packet(pb);
1262 }
1263
1264 static const UID mxf_mpeg2_codec_uls[] = {
1265     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1266     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1267     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1268     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1269     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1270     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1271     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1272     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1273 };
1274
1275 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1276 {
1277     if (avctx->profile == 4) { // Main
1278         if (avctx->level == 8) // Main
1279             return avctx->gop_size ?
1280                 &mxf_mpeg2_codec_uls[1] :
1281                 &mxf_mpeg2_codec_uls[0];
1282         else if (avctx->level == 4) // High
1283             return avctx->gop_size ?
1284                 &mxf_mpeg2_codec_uls[5] :
1285                 &mxf_mpeg2_codec_uls[4];
1286     } else if (avctx->profile == 0) { // 422
1287         if (avctx->level == 5) // Main
1288             return avctx->gop_size ?
1289                 &mxf_mpeg2_codec_uls[3] :
1290                 &mxf_mpeg2_codec_uls[2];
1291         else if (avctx->level == 2) // High
1292             return avctx->gop_size ?
1293                 &mxf_mpeg2_codec_uls[7] :
1294                 &mxf_mpeg2_codec_uls[6];
1295     }
1296     return NULL;
1297 }
1298
1299 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1300 {
1301     MXFStreamContext *sc = st->priv_data;
1302     MXFContext *mxf = s->priv_data;
1303     uint32_t c = -1;
1304     int i;
1305
1306     *flags = 0;
1307
1308     for(i = 0; i < pkt->size - 4; i++) {
1309         c = (c<<8) + pkt->data[i];
1310         if (c == 0x1B5) {
1311             if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1312                 st->codec->profile = pkt->data[i+1] & 0x07;
1313                 st->codec->level   = pkt->data[i+2] >> 4;
1314             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1315                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1316                 break;
1317             }
1318         } else if (c == 0x1b8) { // gop
1319             if (i + 4 < pkt->size) {
1320                 if (pkt->data[i+4]>>6 & 0x01) // closed
1321                     *flags |= 0x80; // random access
1322                 if (!mxf->header_written) {
1323                     unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1324                     unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1325                     unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1326                     unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1327                     mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1328                     mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1329                         mxf->timecode_base + frames;
1330                     if (mxf->timecode_drop_frame) {
1331                         unsigned tminutes = 60 * hours + minutes;
1332                         mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1333                     }
1334                     av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1335                            hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1336                 }
1337             }
1338         } else if (c == 0x1b3) { // seq
1339             *flags |= 0x40;
1340             if (i + 4 < pkt->size) {
1341                 switch ((pkt->data[i+4]>>4) & 0xf) {
1342                 case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1343                 case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1344                 case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1345                 default:
1346                     av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1347                               st->codec->width, st->codec->height, 1024*1024);
1348                 }
1349             }
1350         } else if (c == 0x100) { // pic
1351             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1352             if (pict_type == 2) { // P frame
1353                 *flags |= 0x22;
1354                 st->codec->gop_size = 1;
1355             } else if (pict_type == 3) { // B frame
1356                 *flags |= 0x33;
1357                 sc->temporal_reordering = -1;
1358             } else if (!pict_type) {
1359                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1360                 return 0;
1361             }
1362         }
1363     }
1364     if (s->oformat != &mxf_d10_muxer)
1365         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1366     return !!sc->codec_ul;
1367 }
1368
1369 static uint64_t mxf_parse_timestamp(time_t timestamp)
1370 {
1371     struct tm *time = localtime(&timestamp);
1372     return (uint64_t)(time->tm_year+1900) << 48 |
1373            (uint64_t)(time->tm_mon+1)     << 40 |
1374            (uint64_t) time->tm_mday       << 32 |
1375                       time->tm_hour       << 24 |
1376                       time->tm_min        << 16 |
1377                       time->tm_sec        << 8;
1378 }
1379
1380 static void mxf_gen_umid(AVFormatContext *s)
1381 {
1382     MXFContext *mxf = s->priv_data;
1383     uint32_t seed = ff_random_get_seed();
1384     uint64_t umid = seed + 0x5294713400000000LL;
1385
1386     AV_WB64(mxf->umid  , umid);
1387     AV_WB64(mxf->umid+8, umid>>8);
1388
1389     mxf->instance_number = seed;
1390 }
1391
1392 static int mxf_write_header(AVFormatContext *s)
1393 {
1394     MXFContext *mxf = s->priv_data;
1395     int i;
1396     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1397     const int *samples_per_frame = NULL;
1398
1399     if (!s->nb_streams)
1400         return -1;
1401
1402     for (i = 0; i < s->nb_streams; i++) {
1403         AVStream *st = s->streams[i];
1404         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1405         if (!sc)
1406             return AVERROR(ENOMEM);
1407         st->priv_data = sc;
1408
1409         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1410             if (i != 0) {
1411                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1412                 return -1;
1413             }
1414             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1415                 samples_per_frame = PAL_samples_per_frame;
1416                 mxf->time_base = (AVRational){ 1, 25 };
1417                 mxf->timecode_base = 25;
1418             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1419                 samples_per_frame = NTSC_samples_per_frame;
1420                 mxf->time_base = (AVRational){ 1001, 30000 };
1421                 mxf->timecode_base = 30;
1422             } else {
1423                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1424                 return -1;
1425             }
1426             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1427             if (s->oformat == &mxf_d10_muxer) {
1428                 if (st->codec->bit_rate == 50000000)
1429                     if (mxf->time_base.den == 25) sc->index = 3;
1430                     else                          sc->index = 5;
1431                 else if (st->codec->bit_rate == 40000000)
1432                     if (mxf->time_base.den == 25) sc->index = 7;
1433                     else                          sc->index = 9;
1434                 else if (st->codec->bit_rate == 30000000)
1435                     if (mxf->time_base.den == 25) sc->index = 11;
1436                     else                          sc->index = 13;
1437                 else {
1438                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1439                     return -1;
1440                 }
1441
1442                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1443                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1444                     mxf->time_base.num / (8*mxf->time_base.den);
1445                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1446                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1447                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1448             }
1449         } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1450             if (st->codec->sample_rate != 48000) {
1451                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1452                 return -1;
1453             }
1454             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1455             if (s->oformat == &mxf_d10_muxer) {
1456                 if (st->index != 1) {
1457                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1458                     return -1;
1459                 }
1460                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1461                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1462                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1463                 }
1464                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1465             } else
1466             mxf->slice_count = 1;
1467         }
1468
1469         if (!sc->index) {
1470             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1471             if (sc->index == -1) {
1472                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1473                        "codec not currently supported in container\n", i);
1474                 return -1;
1475             }
1476         }
1477
1478         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1479
1480         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1481         sc->track_essence_element_key[15] = present[sc->index];
1482         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1483
1484         if (!present[sc->index])
1485             mxf->essence_container_count++;
1486         present[sc->index]++;
1487     }
1488
1489     if (s->oformat == &mxf_d10_muxer) {
1490         mxf->essence_container_count = 1;
1491     }
1492
1493     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
1494         mxf_gen_umid(s);
1495
1496     for (i = 0; i < s->nb_streams; i++) {
1497         MXFStreamContext *sc = s->streams[i]->priv_data;
1498         // update element count
1499         sc->track_essence_element_key[13] = present[sc->index];
1500         sc->order = AV_RB32(sc->track_essence_element_key+12);
1501     }
1502
1503     mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1504     mxf->duration = -1;
1505
1506     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1507     if (!mxf->timecode_track)
1508         return AVERROR(ENOMEM);
1509     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1510     if (!mxf->timecode_track->priv_data)
1511         return AVERROR(ENOMEM);
1512     mxf->timecode_track->index = -1;
1513
1514     if (!samples_per_frame)
1515         samples_per_frame = PAL_samples_per_frame;
1516
1517     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1518         return -1;
1519
1520     return 0;
1521 }
1522
1523 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1524 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 };
1525
1526 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1527 {
1528     return (0                                    << 31) | // color frame flag
1529            (0                                    << 30) | // drop  frame flag
1530            ( ((frame % fps) / 10)                << 28) | // tens  of frames
1531            ( ((frame % fps) % 10)                << 24) | // units of frames
1532            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1533            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1534            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1535            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1536            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1537            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1538            (0                                    <<  7) | // b1
1539            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1540            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1541            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1542 }
1543
1544 static void mxf_write_system_item(AVFormatContext *s)
1545 {
1546     MXFContext *mxf = s->priv_data;
1547     ByteIOContext *pb = s->pb;
1548     unsigned frame;
1549     uint32_t time_code;
1550
1551     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1552
1553     // write system metadata pack
1554     put_buffer(pb, system_metadata_pack_key, 16);
1555     klv_encode_ber4_length(pb, 57);
1556     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1557     put_byte(pb, 0x04); // content package rate
1558     put_byte(pb, 0x00); // content package type
1559     put_be16(pb, 0x00); // channel handle
1560     put_be16(pb, frame); // continuity count
1561     if (mxf->essence_container_count > 1)
1562         put_buffer(pb, multiple_desc_ul, 16);
1563     else {
1564         MXFStreamContext *sc = s->streams[0]->priv_data;
1565         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1566     }
1567     put_byte(pb, 0);
1568     put_be64(pb, 0);
1569     put_be64(pb, 0); // creation date/time stamp
1570
1571     put_byte(pb, 0x81); // SMPTE 12M time code
1572     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1573     put_be32(pb, time_code);
1574     put_be32(pb, 0); // binary group data
1575     put_be64(pb, 0);
1576
1577     // write system metadata package set
1578     put_buffer(pb, system_metadata_package_set_key, 16);
1579     klv_encode_ber4_length(pb, 35);
1580     put_byte(pb, 0x83); // UMID
1581     put_be16(pb, 0x20);
1582     mxf_write_umid(s, 1);
1583 }
1584
1585 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1586 {
1587     MXFContext *mxf = s->priv_data;
1588     ByteIOContext *pb = s->pb;
1589     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1590         (8*mxf->time_base.den); // frame size
1591     int pad;
1592
1593     packet_size += 16 + 4;
1594     packet_size += klv_fill_size(packet_size);
1595
1596     klv_encode_ber4_length(pb, pkt->size);
1597     put_buffer(pb, pkt->data, pkt->size);
1598
1599     // ensure CBR muxing by padding to correct video frame size
1600     pad = packet_size - pkt->size - 16 - 4;
1601     if (pad > 20) {
1602         put_buffer(s->pb, klv_fill_key, 16);
1603         pad -= 16 + 4;
1604         klv_encode_ber4_length(s->pb, pad);
1605         for (; pad; pad--)
1606             put_byte(s->pb, 0);
1607         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1608     } else {
1609         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1610         for (; pad > 0; pad--)
1611             put_byte(s->pb, 0);
1612     }
1613 }
1614
1615 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1616 {
1617     MXFContext *mxf = s->priv_data;
1618     ByteIOContext *pb = s->pb;
1619     int frame_size = pkt->size / st->codec->block_align;
1620     uint8_t *samples = pkt->data;
1621     uint8_t *end = pkt->data + pkt->size;
1622     int i;
1623
1624     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1625
1626     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1627     put_le16(pb, frame_size);
1628     put_byte(pb, (1<<st->codec->channels)-1);
1629
1630     while (samples < end) {
1631         for (i = 0; i < st->codec->channels; i++) {
1632             uint32_t sample;
1633             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1634                 sample = AV_RL24(samples)<< 4;
1635                 samples += 3;
1636             } else {
1637                 sample = AV_RL16(samples)<<12;
1638                 samples += 2;
1639             }
1640             put_le32(pb, sample | i);
1641         }
1642         for (; i < 8; i++)
1643             put_le32(pb, i);
1644     }
1645 }
1646
1647 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1648 {
1649     MXFContext *mxf = s->priv_data;
1650     ByteIOContext *pb = s->pb;
1651     AVStream *st = s->streams[pkt->stream_index];
1652     MXFStreamContext *sc = st->priv_data;
1653     int flags = 0;
1654
1655     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1656         mxf->index_entries = av_realloc(mxf->index_entries,
1657             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1658         if (!mxf->index_entries) {
1659             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1660             return -1;
1661         }
1662     }
1663
1664     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1665         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1666             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1667             return -1;
1668         }
1669     }
1670
1671     if (!mxf->header_written) {
1672         if (mxf->edit_unit_byte_count) {
1673             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1674             mxf_write_klv_fill(s);
1675             mxf_write_index_table_segment(s);
1676         } else {
1677             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1678         }
1679         mxf->header_written = 1;
1680     }
1681
1682     if (st->index == 0) {
1683         if (!mxf->edit_unit_byte_count &&
1684             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1685             !(flags & 0x33)) { // I frame, Gop start
1686             mxf_write_klv_fill(s);
1687             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1688
1689             mxf_write_klv_fill(s);
1690             mxf_write_index_table_segment(s);
1691         }
1692
1693         mxf_write_klv_fill(s);
1694         mxf_write_system_item(s);
1695
1696         if (!mxf->edit_unit_byte_count) {
1697             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1698             mxf->index_entries[mxf->edit_units_count].flags = flags;
1699             mxf->body_offset += KAG_SIZE; // size of system element
1700         }
1701         mxf->edit_units_count++;
1702     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1703         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1704             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1705     }
1706
1707     mxf_write_klv_fill(s);
1708     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1709     if (s->oformat == &mxf_d10_muxer) {
1710         if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1711             mxf_write_d10_video_packet(s, st, pkt);
1712         else
1713             mxf_write_d10_audio_packet(s, st, pkt);
1714     } else {
1715         klv_encode_ber4_length(pb, pkt->size); // write length
1716         put_buffer(pb, pkt->data, pkt->size);
1717         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1718     }
1719
1720     put_flush_packet(pb);
1721
1722     return 0;
1723 }
1724
1725 static void mxf_write_random_index_pack(AVFormatContext *s)
1726 {
1727     MXFContext *mxf = s->priv_data;
1728     ByteIOContext *pb = s->pb;
1729     uint64_t pos = url_ftell(pb);
1730     int i;
1731
1732     put_buffer(pb, random_index_pack_key, 16);
1733     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1734
1735     if (mxf->edit_unit_byte_count)
1736         put_be32(pb, 1); // BodySID of header partition
1737     else
1738         put_be32(pb, 0);
1739     put_be64(pb, 0); // offset of header partition
1740
1741     for (i = 0; i < mxf->body_partitions_count; i++) {
1742         put_be32(pb, 1); // BodySID
1743         put_be64(pb, mxf->body_partition_offset[i]);
1744     }
1745
1746     put_be32(pb, 0); // BodySID of footer partition
1747     put_be64(pb, mxf->footer_partition_offset);
1748
1749     put_be32(pb, url_ftell(pb) - pos + 4);
1750 }
1751
1752 static int mxf_write_footer(AVFormatContext *s)
1753 {
1754     MXFContext *mxf = s->priv_data;
1755     ByteIOContext *pb = s->pb;
1756
1757     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1758
1759     mxf_write_klv_fill(s);
1760     mxf->footer_partition_offset = url_ftell(pb);
1761     if (mxf->edit_unit_byte_count) { // no need to repeat index
1762         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1763     } else {
1764         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1765
1766         mxf_write_klv_fill(s);
1767         mxf_write_index_table_segment(s);
1768     }
1769
1770     mxf_write_klv_fill(s);
1771     mxf_write_random_index_pack(s);
1772
1773     if (!url_is_streamed(s->pb)) {
1774         url_fseek(pb, 0, SEEK_SET);
1775         if (mxf->edit_unit_byte_count) {
1776             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1777             mxf_write_klv_fill(s);
1778             mxf_write_index_table_segment(s);
1779         } else {
1780             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1781         }
1782     }
1783
1784     put_flush_packet(pb);
1785
1786     ff_audio_interleave_close(s);
1787
1788     av_freep(&mxf->index_entries);
1789     av_freep(&mxf->body_partition_offset);
1790     av_freep(&mxf->timecode_track->priv_data);
1791     av_freep(&mxf->timecode_track);
1792
1793     mxf_free(s);
1794
1795     return 0;
1796 }
1797
1798 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1799 {
1800     AVPacketList *pktl;
1801     int stream_count = 0;
1802     int streams[MAX_STREAMS];
1803
1804     memset(streams, 0, sizeof(streams));
1805     pktl = s->packet_buffer;
1806     while (pktl) {
1807         //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1808         if (!streams[pktl->pkt.stream_index])
1809             stream_count++;
1810         streams[pktl->pkt.stream_index]++;
1811         pktl = pktl->next;
1812     }
1813
1814     if (stream_count && (s->nb_streams == stream_count || flush)) {
1815         pktl = s->packet_buffer;
1816         if (s->nb_streams != stream_count) {
1817             AVPacketList *last = NULL;
1818             // find last packet in edit unit
1819             while (pktl) {
1820                 if (!stream_count || pktl->pkt.stream_index == 0)
1821                     break;
1822                 last = pktl;
1823                 pktl = pktl->next;
1824                 stream_count--;
1825             }
1826             // purge packet queue
1827             while (pktl) {
1828                 AVPacketList *next = pktl->next;
1829                 av_free_packet(&pktl->pkt);
1830                 av_freep(&pktl);
1831                 pktl = next;
1832             }
1833             if (last)
1834                 last->next = NULL;
1835             else {
1836                 s->packet_buffer = NULL;
1837                 goto out;
1838             }
1839             pktl = s->packet_buffer;
1840         }
1841
1842         *out = pktl->pkt;
1843         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1844         s->packet_buffer = pktl->next;
1845         av_freep(&pktl);
1846         return 1;
1847     } else {
1848     out:
1849         av_init_packet(out);
1850         return 0;
1851     }
1852 }
1853
1854 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1855 {
1856     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1857     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1858
1859     return next->dts > pkt->dts ||
1860         (next->dts == pkt->dts && sc->order < sc2->order);
1861 }
1862
1863 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1864 {
1865     return ff_audio_rechunk_interleave(s, out, pkt, flush,
1866                                mxf_interleave_get_packet, mxf_compare_timestamps);
1867 }
1868
1869 AVOutputFormat mxf_muxer = {
1870     "mxf",
1871     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1872     "application/mxf",
1873     "mxf",
1874     sizeof(MXFContext),
1875     CODEC_ID_PCM_S16LE,
1876     CODEC_ID_MPEG2VIDEO,
1877     mxf_write_header,
1878     mxf_write_packet,
1879     mxf_write_footer,
1880     AVFMT_NOTIMESTAMPS,
1881     NULL,
1882     mxf_interleave,
1883 };
1884
1885 AVOutputFormat mxf_d10_muxer = {
1886     "mxf_d10",
1887     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1888     "application/mxf",
1889     NULL,
1890     sizeof(MXFContext),
1891     CODEC_ID_PCM_S16LE,
1892     CODEC_ID_MPEG2VIDEO,
1893     mxf_write_header,
1894     mxf_write_packet,
1895     mxf_write_footer,
1896     AVFMT_NOTIMESTAMPS,
1897     NULL,
1898     mxf_interleave,
1899 };