Statistics
| Branch: | Revision:

ffmpeg / libavformat / mxfenc.c @ 012dc2c4

History | View | Annotate | Download (72 KB)

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/random_seed.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
    int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
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
    { CODEC_ID_NONE }
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
    { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
302
    // Wave Audio Essence Descriptor
303
    { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
304
    { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
305
};
306

    
307
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
308
{
309
    put_buffer(pb, uuid_base, 12);
310
    put_be16(pb, type);
311
    put_be16(pb, value);
312
}
313

    
314
static void mxf_write_umid(AVFormatContext *s, int type)
315
{
316
    MXFContext *mxf = s->priv_data;
317
    put_buffer(s->pb, umid_ul, 13);
318
    put_be24(s->pb, mxf->instance_number);
319
    put_buffer(s->pb, mxf->umid, 15);
320
    put_byte(s->pb, type);
321
}
322

    
323
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
324
{
325
    put_be32(pb, ref_count);
326
    put_be32(pb, 16);
327
}
328

    
329
static int klv_ber_length(uint64_t len)
330
{
331
    if (len < 128)
332
        return 1;
333
    else
334
        return (av_log2(len) >> 3) + 2;
335
}
336

    
337
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
338
{
339
    // Determine the best BER size
340
    int size;
341
    if (len < 128) {
342
        //short form
343
        put_byte(pb, len);
344
        return 1;
345
    }
346

    
347
    size = (av_log2(len) >> 3) + 1;
348

    
349
    // long form
350
    put_byte(pb, 0x80 + size);
351
    while(size) {
352
        size--;
353
        put_byte(pb, len >> 8 * size & 0xff);
354
    }
355
    return 0;
356
}
357

    
358
static void klv_encode_ber4_length(ByteIOContext *pb, int len)
359
{
360
    put_byte(pb, 0x80 + 3);
361
    put_be24(pb, len);
362
}
363

    
364
/*
365
 * Get essence container ul index
366
 */
367
static int mxf_get_essence_container_ul_index(enum CodecID id)
368
{
369
    int i;
370
    for (i = 0; mxf_essence_mappings[i].id; i++)
371
        if (mxf_essence_mappings[i].id == id)
372
            return mxf_essence_mappings[i].index;
373
    return -1;
374
}
375

    
376
static void mxf_write_primer_pack(AVFormatContext *s)
377
{
378
    ByteIOContext *pb = s->pb;
379
    int local_tag_number, i = 0;
380

    
381
    local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
382

    
383
    put_buffer(pb, primer_pack_key, 16);
384
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);
385

    
386
    put_be32(pb, local_tag_number); // local_tag num
387
    put_be32(pb, 18); // item size, always 18 according to the specs
388

    
389
    for (i = 0; i < local_tag_number; i++) {
390
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
391
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
392
    }
393
}
394

    
395
static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
396
{
397
    put_be16(pb, tag);
398
    put_be16(pb, size);
399
}
400

    
401
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
402
{
403
    put_buffer(pb, header_metadata_key, 13);
404
    put_be24(pb, value);
405
}
406

    
407
static void mxf_free(AVFormatContext *s)
408
{
409
    int i;
410

    
411
    for (i = 0; i < s->nb_streams; i++) {
412
        AVStream *st = s->streams[i];
413
        av_freep(&st->priv_data);
414
    }
415
}
416

    
417
static const MXFCodecUL *mxf_get_data_definition_ul(int type)
418
{
419
    const MXFCodecUL *uls = ff_mxf_data_definition_uls;
420
    while (uls->uid[0]) {
421
        if (type == uls->id)
422
            break;
423
        uls++;
424
    }
425
    return uls;
426
}
427

    
428
static void mxf_write_essence_container_refs(AVFormatContext *s)
429
{
430
    MXFContext *c = s->priv_data;
431
    ByteIOContext *pb = s->pb;
432
    int i;
433

    
434
    mxf_write_refs_count(pb, c->essence_container_count);
435
    av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
436
    for (i = 0; i < c->essence_container_count; i++) {
437
        MXFStreamContext *sc = s->streams[i]->priv_data;
438
        put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
439
    }
440
}
441

    
442
static void mxf_write_preface(AVFormatContext *s)
443
{
444
    MXFContext *mxf = s->priv_data;
445
    ByteIOContext *pb = s->pb;
446

    
447
    mxf_write_metadata_key(pb, 0x012f00);
448
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
449
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
450

    
451
    // write preface set uid
452
    mxf_write_local_tag(pb, 16, 0x3C0A);
453
    mxf_write_uuid(pb, Preface, 0);
454
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
455

    
456
    // last modified date
457
    mxf_write_local_tag(pb, 8, 0x3B02);
458
    put_be64(pb, mxf->timestamp);
459

    
460
    // write version
461
    mxf_write_local_tag(pb, 2, 0x3B05);
462
    put_be16(pb, 258); // v1.2
463

    
464
    // write identification_refs
465
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
466
    mxf_write_refs_count(pb, 1);
467
    mxf_write_uuid(pb, Identification, 0);
468

    
469
    // write content_storage_refs
470
    mxf_write_local_tag(pb, 16, 0x3B03);
471
    mxf_write_uuid(pb, ContentStorage, 0);
472

    
473
    // operational pattern
474
    mxf_write_local_tag(pb, 16, 0x3B09);
475
    put_buffer(pb, op1a_ul, 16);
476

    
477
    // write essence_container_refs
478
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
479
    mxf_write_essence_container_refs(s);
480

    
481
    // write dm_scheme_refs
482
    mxf_write_local_tag(pb, 8, 0x3B0B);
483
    put_be64(pb, 0);
484
}
485

    
486
/*
487
 * Write a local tag containing an ascii string as utf-16
488
 */
489
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
490
{
491
    int i, size = strlen(value);
492
    mxf_write_local_tag(pb, size*2, tag);
493
    for (i = 0; i < size; i++)
494
        put_be16(pb, value[i]);
495
}
496

    
497
static void mxf_write_identification(AVFormatContext *s)
498
{
499
    MXFContext *mxf = s->priv_data;
500
    ByteIOContext *pb = s->pb;
501
    const char *company = "FFmpeg";
502
    const char *product = "OP1a Muxer";
503
    const char *version;
504
    int length;
505

    
506
    mxf_write_metadata_key(pb, 0x013000);
507
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
508

    
509
    version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
510
        "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
511
    length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
512
    klv_encode_ber_length(pb, length);
513

    
514
    // write uid
515
    mxf_write_local_tag(pb, 16, 0x3C0A);
516
    mxf_write_uuid(pb, Identification, 0);
517
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
518

    
519
    // write generation uid
520
    mxf_write_local_tag(pb, 16, 0x3C09);
521
    mxf_write_uuid(pb, Identification, 1);
522

    
523
    mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
524
    mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
525
    mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
526

    
527
    // write product uid
528
    mxf_write_local_tag(pb, 16, 0x3C05);
529
    mxf_write_uuid(pb, Identification, 2);
530

    
531
    // modification date
532
    mxf_write_local_tag(pb, 8, 0x3C06);
533
    put_be64(pb, mxf->timestamp);
534
}
535

    
536
static void mxf_write_content_storage(AVFormatContext *s)
537
{
538
    ByteIOContext *pb = s->pb;
539

    
540
    mxf_write_metadata_key(pb, 0x011800);
541
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
542
    klv_encode_ber_length(pb, 92);
543

    
544
    // write uid
545
    mxf_write_local_tag(pb, 16, 0x3C0A);
546
    mxf_write_uuid(pb, ContentStorage, 0);
547
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
548

    
549
    // write package reference
550
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
551
    mxf_write_refs_count(pb, 2);
552
    mxf_write_uuid(pb, MaterialPackage, 0);
553
    mxf_write_uuid(pb, SourcePackage, 0);
554

    
555
    // write essence container data
556
    mxf_write_local_tag(pb, 8 + 16, 0x1902);
557
    mxf_write_refs_count(pb, 1);
558
    mxf_write_uuid(pb, EssenceContainerData, 0);
559
}
560

    
561
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
562
{
563
    MXFContext *mxf = s->priv_data;
564
    ByteIOContext *pb = s->pb;
565
    MXFStreamContext *sc = st->priv_data;
566

    
567
    mxf_write_metadata_key(pb, 0x013b00);
568
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
569
    klv_encode_ber_length(pb, 80);
570

    
571
    // write track uid
572
    mxf_write_local_tag(pb, 16, 0x3C0A);
573
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
574
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
575

    
576
    // write track id
577
    mxf_write_local_tag(pb, 4, 0x4801);
578
    put_be32(pb, st->index+2);
579

    
580
    // write track number
581
    mxf_write_local_tag(pb, 4, 0x4804);
582
    if (type == MaterialPackage)
583
        put_be32(pb, 0); // track number of material package is 0
584
    else
585
        put_buffer(pb, sc->track_essence_element_key + 12, 4);
586

    
587
    mxf_write_local_tag(pb, 8, 0x4B01);
588
    put_be32(pb, mxf->time_base.den);
589
    put_be32(pb, mxf->time_base.num);
590

    
591
    // write origin
592
    mxf_write_local_tag(pb, 8, 0x4B02);
593
    put_be64(pb, 0);
594

    
595
    // write sequence refs
596
    mxf_write_local_tag(pb, 16, 0x4803);
597
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
598
}
599

    
600
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 };
601

    
602
static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
603
{
604
    MXFContext *mxf = s->priv_data;
605
    ByteIOContext *pb = s->pb;
606

    
607
    // find data define uls
608
    mxf_write_local_tag(pb, 16, 0x0201);
609
    if (st == mxf->timecode_track)
610
        put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
611
    else {
612
        const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
613
        put_buffer(pb, data_def_ul->uid, 16);
614
    }
615

    
616
    // write duration
617
    mxf_write_local_tag(pb, 8, 0x0202);
618
    put_be64(pb, mxf->duration);
619
}
620

    
621
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
622
{
623
    MXFContext *mxf = s->priv_data;
624
    ByteIOContext *pb = s->pb;
625
    enum MXFMetadataSetType component;
626

    
627
    mxf_write_metadata_key(pb, 0x010f00);
628
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
629
    klv_encode_ber_length(pb, 80);
630

    
631
    mxf_write_local_tag(pb, 16, 0x3C0A);
632
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
633

    
634
    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
635
    mxf_write_common_fields(s, st);
636

    
637
    // write structural component
638
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
639
    mxf_write_refs_count(pb, 1);
640
    if (st == mxf->timecode_track)
641
        component = TimecodeComponent;
642
    else
643
        component = SourceClip;
644
    if (type == SourcePackage)
645
        component += TypeBottom;
646
    mxf_write_uuid(pb, component, st->index);
647
}
648

    
649
static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
650
{
651
    MXFContext *mxf = s->priv_data;
652
    ByteIOContext *pb = s->pb;
653

    
654
    mxf_write_metadata_key(pb, 0x011400);
655
    klv_encode_ber_length(pb, 75);
656

    
657
    // UID
658
    mxf_write_local_tag(pb, 16, 0x3C0A);
659
    mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
660
                   TimecodeComponent + TypeBottom, st->index);
661

    
662
    mxf_write_common_fields(s, st);
663

    
664
    // Start Time Code
665
    mxf_write_local_tag(pb, 8, 0x1501);
666
    put_be64(pb, mxf->timecode_start);
667

    
668
    // Rounded Time Code Base
669
    mxf_write_local_tag(pb, 2, 0x1502);
670
    put_be16(pb, mxf->timecode_base);
671

    
672
    // Drop Frame
673
    mxf_write_local_tag(pb, 1, 0x1503);
674
    put_byte(pb, mxf->timecode_drop_frame);
675
}
676

    
677
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
678
{
679
    ByteIOContext *pb = s->pb;
680
    int i;
681

    
682
    mxf_write_metadata_key(pb, 0x011100);
683
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
684
    klv_encode_ber_length(pb, 108);
685

    
686
    // write uid
687
    mxf_write_local_tag(pb, 16, 0x3C0A);
688
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
689

    
690
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
691
    mxf_write_common_fields(s, st);
692

    
693
    // write start_position
694
    mxf_write_local_tag(pb, 8, 0x1201);
695
    put_be64(pb, 0);
696

    
697
    // write source package uid, end of the reference
698
    mxf_write_local_tag(pb, 32, 0x1101);
699
    if (type == SourcePackage) {
700
        for (i = 0; i < 4; i++)
701
            put_be64(pb, 0);
702
    } else
703
        mxf_write_umid(s, 1);
704

    
705
    // write source track id
706
    mxf_write_local_tag(pb, 4, 0x1102);
707
    if (type == SourcePackage)
708
        put_be32(pb, 0);
709
    else
710
        put_be32(pb, st->index+2);
711
}
712

    
713
static void mxf_write_multi_descriptor(AVFormatContext *s)
714
{
715
    MXFContext *mxf = s->priv_data;
716
    ByteIOContext *pb = s->pb;
717
    const uint8_t *ul;
718
    int i;
719

    
720
    mxf_write_metadata_key(pb, 0x014400);
721
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
722
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
723

    
724
    mxf_write_local_tag(pb, 16, 0x3C0A);
725
    mxf_write_uuid(pb, MultipleDescriptor, 0);
726
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
727

    
728
    // write sample rate
729
    mxf_write_local_tag(pb, 8, 0x3001);
730
    put_be32(pb, mxf->time_base.den);
731
    put_be32(pb, mxf->time_base.num);
732

    
733
    // write essence container ul
734
    mxf_write_local_tag(pb, 16, 0x3004);
735
    if (mxf->essence_container_count > 1)
736
        ul = multiple_desc_ul;
737
    else {
738
        MXFStreamContext *sc = s->streams[0]->priv_data;
739
        ul = mxf_essence_container_uls[sc->index].container_ul;
740
    }
741
    put_buffer(pb, ul, 16);
742

    
743
    // write sub descriptor refs
744
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
745
    mxf_write_refs_count(pb, s->nb_streams);
746
    for (i = 0; i < s->nb_streams; i++)
747
        mxf_write_uuid(pb, SubDescriptor, i);
748
}
749

    
750
static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
751
{
752
    MXFContext *mxf = s->priv_data;
753
    MXFStreamContext *sc = st->priv_data;
754
    ByteIOContext *pb = s->pb;
755

    
756
    put_buffer(pb, key, 16);
757
    klv_encode_ber4_length(pb, size+20+8+12+20);
758

    
759
    mxf_write_local_tag(pb, 16, 0x3C0A);
760
    mxf_write_uuid(pb, SubDescriptor, st->index);
761

    
762
    mxf_write_local_tag(pb, 4, 0x3006);
763
    put_be32(pb, st->index+2);
764

    
765
    mxf_write_local_tag(pb, 8, 0x3001);
766
    put_be32(pb, mxf->time_base.den);
767
    put_be32(pb, mxf->time_base.num);
768

    
769
    mxf_write_local_tag(pb, 16, 0x3004);
770
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
771
}
772

    
773
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
774
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
775
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
776
static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
777
static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
778

    
779
static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
780
{
781
    MXFStreamContext *sc = st->priv_data;
782
    ByteIOContext *pb = s->pb;
783
    int stored_height = (st->codec->height+15)/16*16;
784
    int display_height;
785
    int f1, f2;
786

    
787
    mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
788

    
789
    mxf_write_local_tag(pb, 4, 0x3203);
790
    put_be32(pb, st->codec->width);
791

    
792
    mxf_write_local_tag(pb, 4, 0x3202);
793
    put_be32(pb, stored_height>>sc->interlaced);
794

    
795
    mxf_write_local_tag(pb, 4, 0x3209);
796
    put_be32(pb, st->codec->width);
797

    
798
    if (st->codec->height == 608) // PAL + VBI
799
        display_height = 576;
800
    else if (st->codec->height == 512)  // NTSC + VBI
801
        display_height = 486;
802
    else
803
        display_height = st->codec->height;
804

    
805
    mxf_write_local_tag(pb, 4, 0x3208);
806
    put_be32(pb, display_height>>sc->interlaced);
807

    
808
    // component depth
809
    mxf_write_local_tag(pb, 4, 0x3301);
810
    put_be32(pb, 8);
811

    
812
    // horizontal subsampling
813
    mxf_write_local_tag(pb, 4, 0x3302);
814
    put_be32(pb, 2);
815

    
816
    // frame layout
817
    mxf_write_local_tag(pb, 1, 0x320C);
818
    put_byte(pb, sc->interlaced);
819

    
820
    // video line map
821
    switch (st->codec->height) {
822
    case  576: f1 = 23; f2 = 336; break;
823
    case  608: f1 =  7; f2 = 320; break;
824
    case  480: f1 = 20; f2 = 283; break;
825
    case  512: f1 =  7; f2 = 270; break;
826
    case  720: f1 = 26; f2 =   0; break; // progressive
827
    case 1080: f1 = 21; f2 = 584; break;
828
    default:   f1 =  0; f2 =   0; break;
829
    }
830

    
831
    if (!sc->interlaced) {
832
        f2  = 0;
833
        f1 *= 2;
834
    }
835

    
836
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
837
    put_be32(pb, sc->interlaced ? 2 : 1);
838
    put_be32(pb, 4);
839
    put_be32(pb, f1);
840
    if (sc->interlaced)
841
        put_be32(pb, f2);
842

    
843
    mxf_write_local_tag(pb, 8, 0x320E);
844
    put_be32(pb, sc->aspect_ratio.num);
845
    put_be32(pb, sc->aspect_ratio.den);
846

    
847
    mxf_write_local_tag(pb, 16, 0x3201);
848
    put_buffer(pb, *sc->codec_ul, 16);
849
}
850

    
851
static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
852
{
853
    mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
854
}
855

    
856
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
857
{
858
    ByteIOContext *pb = s->pb;
859
    int profile_and_level = (st->codec->profile<<4) | st->codec->level;
860

    
861
    mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
862

    
863
    // bit rate
864
    mxf_write_local_tag(pb, 4, 0x8000);
865
    put_be32(pb, st->codec->bit_rate);
866

    
867
    // profile and level
868
    mxf_write_local_tag(pb, 1, 0x8007);
869
    if (!st->codec->profile)
870
        profile_and_level |= 0x80; // escape bit
871
    put_byte(pb, profile_and_level);
872
}
873

    
874
static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
875
{
876
    ByteIOContext *pb = s->pb;
877

    
878
    mxf_write_generic_desc(s, st, key, size+5+12+8+8);
879

    
880
    // audio locked
881
    mxf_write_local_tag(pb, 1, 0x3D02);
882
    put_byte(pb, 1);
883

    
884
    // write audio sampling rate
885
    mxf_write_local_tag(pb, 8, 0x3D03);
886
    put_be32(pb, st->codec->sample_rate);
887
    put_be32(pb, 1);
888

    
889
    mxf_write_local_tag(pb, 4, 0x3D07);
890
    put_be32(pb, st->codec->channels);
891

    
892
    mxf_write_local_tag(pb, 4, 0x3D01);
893
    put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
894
}
895

    
896
static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
897
{
898
    ByteIOContext *pb = s->pb;
899

    
900
    mxf_write_generic_sound_common(s, st, key, size+6+8);
901

    
902
    mxf_write_local_tag(pb, 2, 0x3D0A);
903
    put_be16(pb, st->codec->block_align);
904

    
905
    // avg bytes per sec
906
    mxf_write_local_tag(pb, 4, 0x3D09);
907
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
908
}
909

    
910
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
911
{
912
    mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
913
}
914

    
915
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
916
{
917
    mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
918
}
919

    
920
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
921
{
922
    mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
923
}
924

    
925
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
926
{
927
    MXFContext *mxf = s->priv_data;
928
    ByteIOContext *pb = s->pb;
929
    int i, track_count = s->nb_streams+1;
930

    
931
    if (type == MaterialPackage) {
932
        mxf_write_metadata_key(pb, 0x013600);
933
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
934
        klv_encode_ber_length(pb, 92 + 16*track_count);
935
    } else {
936
        mxf_write_metadata_key(pb, 0x013700);
937
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
938
        klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
939
    }
940

    
941
    // write uid
942
    mxf_write_local_tag(pb, 16, 0x3C0A);
943
    mxf_write_uuid(pb, type, 0);
944
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
945
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
946

    
947
    // write package umid
948
    mxf_write_local_tag(pb, 32, 0x4401);
949
    mxf_write_umid(s, type == SourcePackage);
950
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
951

    
952
    // package creation date
953
    mxf_write_local_tag(pb, 8, 0x4405);
954
    put_be64(pb, mxf->timestamp);
955

    
956
    // package modified date
957
    mxf_write_local_tag(pb, 8, 0x4404);
958
    put_be64(pb, mxf->timestamp);
959

    
960
    // write track refs
961
    mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
962
    mxf_write_refs_count(pb, track_count);
963
    mxf_write_uuid(pb, type == MaterialPackage ? Track :
964
                   Track + TypeBottom, -1); // timecode track
965
    for (i = 0; i < s->nb_streams; i++)
966
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
967

    
968
    // write multiple descriptor reference
969
    if (type == SourcePackage) {
970
        mxf_write_local_tag(pb, 16, 0x4701);
971
        if (s->nb_streams > 1) {
972
            mxf_write_uuid(pb, MultipleDescriptor, 0);
973
            mxf_write_multi_descriptor(s);
974
        } else
975
            mxf_write_uuid(pb, SubDescriptor, 0);
976
    }
977

    
978
    // write timecode track
979
    mxf_write_track(s, mxf->timecode_track, type);
980
    mxf_write_sequence(s, mxf->timecode_track, type);
981
    mxf_write_timecode_component(s, mxf->timecode_track, type);
982

    
983
    for (i = 0; i < s->nb_streams; i++) {
984
        AVStream *st = s->streams[i];
985
        mxf_write_track(s, st, type);
986
        mxf_write_sequence(s, st, type);
987
        mxf_write_structural_component(s, st, type);
988

    
989
        if (type == SourcePackage) {
990
            MXFStreamContext *sc = st->priv_data;
991
            mxf_essence_container_uls[sc->index].write_desc(s, st);
992
        }
993
    }
994
}
995

    
996
static int mxf_write_essence_container_data(AVFormatContext *s)
997
{
998
    ByteIOContext *pb = s->pb;
999

    
1000
    mxf_write_metadata_key(pb, 0x012300);
1001
    klv_encode_ber_length(pb, 72);
1002

    
1003
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1004
    mxf_write_uuid(pb, EssenceContainerData, 0);
1005

    
1006
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1007
    mxf_write_umid(s, 1);
1008

    
1009
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1010
    put_be32(pb, 1);
1011

    
1012
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1013
    put_be32(pb, 2);
1014

    
1015
    return 0;
1016
}
1017

    
1018
static int mxf_write_header_metadata_sets(AVFormatContext *s)
1019
{
1020
    mxf_write_preface(s);
1021
    mxf_write_identification(s);
1022
    mxf_write_content_storage(s);
1023
    mxf_write_package(s, MaterialPackage);
1024
    mxf_write_package(s, SourcePackage);
1025
    mxf_write_essence_container_data(s);
1026
    return 0;
1027
}
1028

    
1029
static unsigned klv_fill_size(uint64_t size)
1030
{
1031
    unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1032
    if (pad < 20) // smallest fill item possible
1033
        return pad + KAG_SIZE;
1034
    else
1035
        return pad & (KAG_SIZE-1);
1036
}
1037

    
1038
static void mxf_write_index_table_segment(AVFormatContext *s)
1039
{
1040
    MXFContext *mxf = s->priv_data;
1041
    ByteIOContext *pb = s->pb;
1042
    int i, j;
1043
    int temporal_reordering = 0;
1044
    int key_index = mxf->last_key_index;
1045

    
1046
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1047

    
1048
    if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1049
        return;
1050

    
1051
    put_buffer(pb, index_table_segment_key, 16);
1052

    
1053
    if (mxf->edit_unit_byte_count) {
1054
        klv_encode_ber_length(pb, 80);
1055
    } else {
1056
        klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1057
                              12+mxf->edit_units_count*(11+mxf->slice_count*4));
1058
    }
1059

    
1060
    // instance id
1061
    mxf_write_local_tag(pb, 16, 0x3C0A);
1062
    mxf_write_uuid(pb, IndexTableSegment, 0);
1063

    
1064
    // index edit rate
1065
    mxf_write_local_tag(pb, 8, 0x3F0B);
1066
    put_be32(pb, mxf->time_base.den);
1067
    put_be32(pb, mxf->time_base.num);
1068

    
1069
    // index start position
1070
    mxf_write_local_tag(pb, 8, 0x3F0C);
1071
    put_be64(pb, mxf->last_indexed_edit_unit);
1072

    
1073
    // index duration
1074
    mxf_write_local_tag(pb, 8, 0x3F0D);
1075
    if (mxf->edit_unit_byte_count)
1076
        put_be64(pb, 0); // index table covers whole container
1077
    else
1078
        put_be64(pb, mxf->edit_units_count);
1079

    
1080
    // edit unit byte count
1081
    mxf_write_local_tag(pb, 4, 0x3F05);
1082
    put_be32(pb, mxf->edit_unit_byte_count);
1083

    
1084
    // index sid
1085
    mxf_write_local_tag(pb, 4, 0x3F06);
1086
    put_be32(pb, 2);
1087

    
1088
    // body sid
1089
    mxf_write_local_tag(pb, 4, 0x3F07);
1090
    put_be32(pb, 1);
1091

    
1092
    if (!mxf->edit_unit_byte_count) {
1093
        // real slice count - 1
1094
        mxf_write_local_tag(pb, 1, 0x3F08);
1095
        put_byte(pb, mxf->slice_count);
1096

    
1097
        // delta entry array
1098
        mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1099
        put_be32(pb, s->nb_streams+1); // num of entries
1100
        put_be32(pb, 6);               // size of one entry
1101
        // write system item delta entry
1102
        put_byte(pb, 0);
1103
        put_byte(pb, 0); // slice entry
1104
        put_be32(pb, 0); // element delta
1105
        for (i = 0; i < s->nb_streams; i++) {
1106
            AVStream *st = s->streams[i];
1107
            MXFStreamContext *sc = st->priv_data;
1108
            put_byte(pb, sc->temporal_reordering);
1109
            if (sc->temporal_reordering)
1110
                temporal_reordering = 1;
1111
            if (i == 0) { // video track
1112
                put_byte(pb, 0); // slice number
1113
                put_be32(pb, KAG_SIZE); // system item size including klv fill
1114
            } else { // audio track
1115
                unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1116
                audio_frame_size += klv_fill_size(audio_frame_size);
1117
                put_byte(pb, 1);
1118
                put_be32(pb, (i-1)*audio_frame_size); // element delta
1119
            }
1120
        }
1121

    
1122
        mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1123
        put_be32(pb, mxf->edit_units_count);  // num of entries
1124
        put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1125
        for (i = 0; i < mxf->edit_units_count; i++) {
1126
            int temporal_offset = 0;
1127
            if (temporal_reordering) {
1128
                for (j = i+1; j < mxf->edit_units_count; j++) {
1129
                    temporal_offset++;
1130
                    if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1131
                        // next is not b, so is reordered
1132
                        if (!(mxf->index_entries[i+1].flags & 0x10)) {
1133
                            if ((mxf->index_entries[i].flags & 0x11) == 0) // I frame
1134
                                temporal_offset = 0;
1135
                            else
1136
                                temporal_offset = -temporal_offset;
1137
                        }
1138
                        break;
1139
                    }
1140
                }
1141
            }
1142
            put_byte(pb, temporal_offset);
1143

    
1144
            if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1145
                if (mxf->index_entries[i].flags & 0x40 && // seq header
1146
                    (!temporal_reordering || !temporal_offset))
1147
                    mxf->index_entries[i].flags |= 0x80; // random access
1148
                mxf->last_key_index = key_index;
1149
                key_index = i;
1150
            }
1151
            if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1152
                put_byte(pb, mxf->last_key_index - i);
1153
            } else {
1154
                put_byte(pb, key_index - i); // key frame offset
1155
                if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1156
                    mxf->last_key_index = key_index;
1157
            }
1158
            put_byte(pb, mxf->index_entries[i].flags);
1159
            // stream offset
1160
            put_be64(pb, mxf->index_entries[i].offset);
1161
            if (s->nb_streams > 1)
1162
                put_be32(pb, mxf->index_entries[i].slice_offset);
1163
        }
1164

    
1165
        mxf->last_key_index = key_index - mxf->edit_units_count;
1166
        mxf->last_indexed_edit_unit += mxf->edit_units_count;
1167
        mxf->edit_units_count = 0;
1168
    }
1169
}
1170

    
1171
static void mxf_write_klv_fill(AVFormatContext *s)
1172
{
1173
    unsigned pad = klv_fill_size(url_ftell(s->pb));
1174
    if (pad) {
1175
        put_buffer(s->pb, klv_fill_key, 16);
1176
        pad -= 16 + 4;
1177
        klv_encode_ber4_length(s->pb, pad);
1178
        for (; pad; pad--)
1179
            put_byte(s->pb, 0);
1180
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1181
    }
1182
}
1183

    
1184
static void mxf_write_partition(AVFormatContext *s, int bodysid,
1185
                                int indexsid,
1186
                                const uint8_t *key, int write_metadata)
1187
{
1188
    MXFContext *mxf = s->priv_data;
1189
    ByteIOContext *pb = s->pb;
1190
    int64_t header_byte_count_offset;
1191
    unsigned index_byte_count = 0;
1192
    uint64_t partition_offset = url_ftell(pb);
1193

    
1194
    if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1195
        index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1196
            12+mxf->edit_units_count*(11+mxf->slice_count*4);
1197
    else if (mxf->edit_unit_byte_count && indexsid)
1198
        index_byte_count = 80;
1199

    
1200
    if (index_byte_count) {
1201
        // add encoded ber length
1202
        index_byte_count += 16 + klv_ber_length(index_byte_count);
1203
        index_byte_count += klv_fill_size(index_byte_count);
1204
    }
1205

    
1206
    if (!memcmp(key, body_partition_key, 16)) {
1207
        mxf->body_partition_offset =
1208
            av_realloc(mxf->body_partition_offset,
1209
                       (mxf->body_partitions_count+1)*
1210
                       sizeof(*mxf->body_partition_offset));
1211
        mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1212
    }
1213

    
1214
    // write klv
1215
    put_buffer(pb, key, 16);
1216
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1217

    
1218
    // write partition value
1219
    put_be16(pb, 1); // majorVersion
1220
    put_be16(pb, 2); // minorVersion
1221
    put_be32(pb, KAG_SIZE); // KAGSize
1222

    
1223
    put_be64(pb, partition_offset); // ThisPartition
1224

    
1225
    if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1226
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1227
    else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1228
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1229
    else
1230
        put_be64(pb, 0);
1231

    
1232
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
1233

    
1234
    // set offset
1235
    header_byte_count_offset = url_ftell(pb);
1236
    put_be64(pb, 0); // headerByteCount, update later
1237

    
1238
    // indexTable
1239
    put_be64(pb, index_byte_count); // indexByteCount
1240
    put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1241

    
1242
    // BodyOffset
1243
    if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1244
        put_be64(pb, mxf->body_offset);
1245
    } else
1246
        put_be64(pb, 0);
1247

    
1248
    put_be32(pb, bodysid); // bodySID
1249

    
1250
    // operational pattern
1251
    put_buffer(pb, op1a_ul, 16);
1252

    
1253
    // essence container
1254
    mxf_write_essence_container_refs(s);
1255

    
1256
    if (write_metadata) {
1257
        // mark the start of the headermetadata and calculate metadata size
1258
        int64_t pos, start;
1259
        unsigned header_byte_count;
1260

    
1261
        mxf_write_klv_fill(s);
1262
        start = url_ftell(s->pb);
1263
        mxf_write_primer_pack(s);
1264
        mxf_write_header_metadata_sets(s);
1265
        pos = url_ftell(s->pb);
1266
        header_byte_count = pos - start + klv_fill_size(pos);
1267

    
1268
        // update header_byte_count
1269
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
1270
        put_be64(pb, header_byte_count);
1271
        url_fseek(pb, pos, SEEK_SET);
1272
    }
1273

    
1274
    put_flush_packet(pb);
1275
}
1276

    
1277
static const UID mxf_mpeg2_codec_uls[] = {
1278
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1279
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1280
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1281
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1282
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1283
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1284
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1285
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1286
};
1287

    
1288
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1289
{
1290
    int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1291

    
1292
    if (avctx->profile == 4) { // Main
1293
        if (avctx->level == 8) // Main
1294
            return &mxf_mpeg2_codec_uls[0+long_gop];
1295
        else if (avctx->level == 4) // High
1296
            return &mxf_mpeg2_codec_uls[4+long_gop];
1297
    } else if (avctx->profile == 0) { // 422
1298
        if (avctx->level == 5) // Main
1299
            return &mxf_mpeg2_codec_uls[2+long_gop];
1300
        else if (avctx->level == 2) // High
1301
            return &mxf_mpeg2_codec_uls[6+long_gop];
1302
    }
1303
    return NULL;
1304
}
1305

    
1306
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1307
{
1308
    MXFStreamContext *sc = st->priv_data;
1309
    MXFContext *mxf = s->priv_data;
1310
    uint32_t c = -1;
1311
    int i;
1312

    
1313
    *flags = 0;
1314

    
1315
    for(i = 0; i < pkt->size - 4; i++) {
1316
        c = (c<<8) + pkt->data[i];
1317
        if (c == 0x1b5) {
1318
            if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1319
                st->codec->profile = pkt->data[i+1] & 0x07;
1320
                st->codec->level   = pkt->data[i+2] >> 4;
1321
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1322
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1323
                break;
1324
            }
1325
        } else if (c == 0x1b8) { // gop
1326
            if (pkt->data[i+4]>>6 & 0x01) { // closed
1327
                sc->closed_gop = 1;
1328
                if (*flags & 0x40) // sequence header present
1329
                    *flags |= 0x80; // random access
1330
            }
1331
            if (!mxf->header_written) {
1332
                unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1333
                unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1334
                unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1335
                unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1336
                mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1337
                mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1338
                    mxf->timecode_base + frames;
1339
                if (mxf->timecode_drop_frame) {
1340
                    unsigned tminutes = 60 * hours + minutes;
1341
                    mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1342
                }
1343
                av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1344
                       hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1345
            }
1346
        } else if (c == 0x1b3) { // seq
1347
            *flags |= 0x40;
1348
            switch ((pkt->data[i+4]>>4) & 0xf) {
1349
            case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1350
            case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1351
            case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1352
            default:
1353
                av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1354
                          st->codec->width, st->codec->height, 1024*1024);
1355
            }
1356
        } else if (c == 0x100) { // pic
1357
            int pict_type = (pkt->data[i+2]>>3) & 0x07;
1358
            if (pict_type == 2) { // P frame
1359
                *flags |= 0x22;
1360
                sc->closed_gop = 0; // reset closed gop, don't matter anymore
1361
            } else if (pict_type == 3) { // B frame
1362
                if (sc->closed_gop)
1363
                    *flags |= 0x13; // only backward prediction
1364
                else
1365
                    *flags |= 0x33;
1366
                sc->temporal_reordering = -1;
1367
            } else if (!pict_type) {
1368
                av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1369
                return 0;
1370
            }
1371
        }
1372
    }
1373
    if (s->oformat != &mxf_d10_muxer)
1374
        sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1375
    return !!sc->codec_ul;
1376
}
1377

    
1378
static uint64_t mxf_parse_timestamp(time_t timestamp)
1379
{
1380
    struct tm *time = gmtime(&timestamp);
1381
    return (uint64_t)(time->tm_year+1900) << 48 |
1382
           (uint64_t)(time->tm_mon+1)     << 40 |
1383
           (uint64_t) time->tm_mday       << 32 |
1384
                      time->tm_hour       << 24 |
1385
                      time->tm_min        << 16 |
1386
                      time->tm_sec        << 8;
1387
}
1388

    
1389
static void mxf_gen_umid(AVFormatContext *s)
1390
{
1391
    MXFContext *mxf = s->priv_data;
1392
    uint32_t seed = ff_random_get_seed();
1393
    uint64_t umid = seed + 0x5294713400000000LL;
1394

    
1395
    AV_WB64(mxf->umid  , umid);
1396
    AV_WB64(mxf->umid+8, umid>>8);
1397

    
1398
    mxf->instance_number = seed;
1399
}
1400

    
1401
static int mxf_write_header(AVFormatContext *s)
1402
{
1403
    MXFContext *mxf = s->priv_data;
1404
    int i;
1405
    uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1406
    const int *samples_per_frame = NULL;
1407

    
1408
    if (!s->nb_streams)
1409
        return -1;
1410

    
1411
    for (i = 0; i < s->nb_streams; i++) {
1412
        AVStream *st = s->streams[i];
1413
        MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1414
        if (!sc)
1415
            return AVERROR(ENOMEM);
1416
        st->priv_data = sc;
1417

    
1418
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1419
            if (i != 0) {
1420
                av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1421
                return -1;
1422
            }
1423
            if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1424
                samples_per_frame = PAL_samples_per_frame;
1425
                mxf->time_base = (AVRational){ 1, 25 };
1426
                mxf->timecode_base = 25;
1427
            } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1428
                samples_per_frame = NTSC_samples_per_frame;
1429
                mxf->time_base = (AVRational){ 1001, 30000 };
1430
                mxf->timecode_base = 30;
1431
            } else {
1432
                av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1433
                return -1;
1434
            }
1435
            av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1436
            if (s->oformat == &mxf_d10_muxer) {
1437
                if (st->codec->bit_rate == 50000000)
1438
                    if (mxf->time_base.den == 25) sc->index = 3;
1439
                    else                          sc->index = 5;
1440
                else if (st->codec->bit_rate == 40000000)
1441
                    if (mxf->time_base.den == 25) sc->index = 7;
1442
                    else                          sc->index = 9;
1443
                else if (st->codec->bit_rate == 30000000)
1444
                    if (mxf->time_base.den == 25) sc->index = 11;
1445
                    else                          sc->index = 13;
1446
                else {
1447
                    av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1448
                    return -1;
1449
                }
1450

    
1451
                mxf->edit_unit_byte_count = KAG_SIZE; // system element
1452
                mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1453
                    mxf->time_base.num / (8*mxf->time_base.den);
1454
                mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1455
                mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1456
                mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1457
            }
1458
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1459
            if (st->codec->sample_rate != 48000) {
1460
                av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1461
                return -1;
1462
            }
1463
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1464
            if (s->oformat == &mxf_d10_muxer) {
1465
                if (st->index != 1) {
1466
                    av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1467
                    return -1;
1468
                }
1469
                if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1470
                    st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1471
                    av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1472
                }
1473
                sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1474
            } else
1475
            mxf->slice_count = 1;
1476
        }
1477

    
1478
        if (!sc->index) {
1479
            sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1480
            if (sc->index == -1) {
1481
                av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1482
                       "codec not currently supported in container\n", i);
1483
                return -1;
1484
            }
1485
        }
1486

    
1487
        sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1488

    
1489
        memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1490
        sc->track_essence_element_key[15] = present[sc->index];
1491
        PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1492

    
1493
        if (!present[sc->index])
1494
            mxf->essence_container_count++;
1495
        present[sc->index]++;
1496
    }
1497

    
1498
    if (s->oformat == &mxf_d10_muxer) {
1499
        mxf->essence_container_count = 1;
1500
    }
1501

    
1502
    if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
1503
        mxf_gen_umid(s);
1504

    
1505
    for (i = 0; i < s->nb_streams; i++) {
1506
        MXFStreamContext *sc = s->streams[i]->priv_data;
1507
        // update element count
1508
        sc->track_essence_element_key[13] = present[sc->index];
1509
        sc->order = AV_RB32(sc->track_essence_element_key+12);
1510
    }
1511

    
1512
    if (s->timestamp)
1513
        mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1514
    mxf->duration = -1;
1515

    
1516
    mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1517
    if (!mxf->timecode_track)
1518
        return AVERROR(ENOMEM);
1519
    mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1520
    if (!mxf->timecode_track->priv_data)
1521
        return AVERROR(ENOMEM);
1522
    mxf->timecode_track->index = -1;
1523

    
1524
    if (!samples_per_frame)
1525
        samples_per_frame = PAL_samples_per_frame;
1526

    
1527
    if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1528
        return -1;
1529

    
1530
    return 0;
1531
}
1532

    
1533
static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1534
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 };
1535

    
1536
static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1537
{
1538
    return (0                                    << 31) | // color frame flag
1539
           (0                                    << 30) | // drop  frame flag
1540
           ( ((frame % fps) / 10)                << 28) | // tens  of frames
1541
           ( ((frame % fps) % 10)                << 24) | // units of frames
1542
           (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1543
           ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1544
           ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1545
           (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1546
           ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1547
           ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1548
           (0                                    <<  7) | // b1
1549
           (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1550
           ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1551
           (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1552
}
1553

    
1554
static void mxf_write_system_item(AVFormatContext *s)
1555
{
1556
    MXFContext *mxf = s->priv_data;
1557
    ByteIOContext *pb = s->pb;
1558
    unsigned frame;
1559
    uint32_t time_code;
1560

    
1561
    frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1562

    
1563
    // write system metadata pack
1564
    put_buffer(pb, system_metadata_pack_key, 16);
1565
    klv_encode_ber4_length(pb, 57);
1566
    put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1567
    put_byte(pb, 0x04); // content package rate
1568
    put_byte(pb, 0x00); // content package type
1569
    put_be16(pb, 0x00); // channel handle
1570
    put_be16(pb, frame); // continuity count
1571
    if (mxf->essence_container_count > 1)
1572
        put_buffer(pb, multiple_desc_ul, 16);
1573
    else {
1574
        MXFStreamContext *sc = s->streams[0]->priv_data;
1575
        put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1576
    }
1577
    put_byte(pb, 0);
1578
    put_be64(pb, 0);
1579
    put_be64(pb, 0); // creation date/time stamp
1580

    
1581
    put_byte(pb, 0x81); // SMPTE 12M time code
1582
    time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1583
    put_be32(pb, time_code);
1584
    put_be32(pb, 0); // binary group data
1585
    put_be64(pb, 0);
1586

    
1587
    // write system metadata package set
1588
    put_buffer(pb, system_metadata_package_set_key, 16);
1589
    klv_encode_ber4_length(pb, 35);
1590
    put_byte(pb, 0x83); // UMID
1591
    put_be16(pb, 0x20);
1592
    mxf_write_umid(s, 1);
1593
}
1594

    
1595
static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1596
{
1597
    MXFContext *mxf = s->priv_data;
1598
    ByteIOContext *pb = s->pb;
1599
    int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1600
        (8*mxf->time_base.den); // frame size
1601
    int pad;
1602

    
1603
    packet_size += 16 + 4;
1604
    packet_size += klv_fill_size(packet_size);
1605

    
1606
    klv_encode_ber4_length(pb, pkt->size);
1607
    put_buffer(pb, pkt->data, pkt->size);
1608

    
1609
    // ensure CBR muxing by padding to correct video frame size
1610
    pad = packet_size - pkt->size - 16 - 4;
1611
    if (pad > 20) {
1612
        put_buffer(s->pb, klv_fill_key, 16);
1613
        pad -= 16 + 4;
1614
        klv_encode_ber4_length(s->pb, pad);
1615
        for (; pad; pad--)
1616
            put_byte(s->pb, 0);
1617
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1618
    } else {
1619
        av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1620
        for (; pad > 0; pad--)
1621
            put_byte(s->pb, 0);
1622
    }
1623
}
1624

    
1625
static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1626
{
1627
    MXFContext *mxf = s->priv_data;
1628
    ByteIOContext *pb = s->pb;
1629
    int frame_size = pkt->size / st->codec->block_align;
1630
    uint8_t *samples = pkt->data;
1631
    uint8_t *end = pkt->data + pkt->size;
1632
    int i;
1633

    
1634
    klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1635

    
1636
    put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1637
    put_le16(pb, frame_size);
1638
    put_byte(pb, (1<<st->codec->channels)-1);
1639

    
1640
    while (samples < end) {
1641
        for (i = 0; i < st->codec->channels; i++) {
1642
            uint32_t sample;
1643
            if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1644
                sample = AV_RL24(samples)<< 4;
1645
                samples += 3;
1646
            } else {
1647
                sample = AV_RL16(samples)<<12;
1648
                samples += 2;
1649
            }
1650
            put_le32(pb, sample | i);
1651
        }
1652
        for (; i < 8; i++)
1653
            put_le32(pb, i);
1654
    }
1655
}
1656

    
1657
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1658
{
1659
    MXFContext *mxf = s->priv_data;
1660
    ByteIOContext *pb = s->pb;
1661
    AVStream *st = s->streams[pkt->stream_index];
1662
    MXFStreamContext *sc = st->priv_data;
1663
    int flags = 0;
1664

    
1665
    if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1666
        mxf->index_entries = av_realloc(mxf->index_entries,
1667
            (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1668
        if (!mxf->index_entries) {
1669
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1670
            return -1;
1671
        }
1672
    }
1673

    
1674
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1675
        if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1676
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1677
            return -1;
1678
        }
1679
    }
1680

    
1681
    if (!mxf->header_written) {
1682
        if (mxf->edit_unit_byte_count) {
1683
            mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1684
            mxf_write_klv_fill(s);
1685
            mxf_write_index_table_segment(s);
1686
        } else {
1687
            mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1688
        }
1689
        mxf->header_written = 1;
1690
    }
1691

    
1692
    if (st->index == 0) {
1693
        if (!mxf->edit_unit_byte_count &&
1694
            (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1695
            !(flags & 0x33)) { // I frame, Gop start
1696
            mxf_write_klv_fill(s);
1697
            mxf_write_partition(s, 1, 2, body_partition_key, 0);
1698

    
1699
            mxf_write_klv_fill(s);
1700
            mxf_write_index_table_segment(s);
1701
        }
1702

    
1703
        mxf_write_klv_fill(s);
1704
        mxf_write_system_item(s);
1705

    
1706
        if (!mxf->edit_unit_byte_count) {
1707
            mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1708
            mxf->index_entries[mxf->edit_units_count].flags = flags;
1709
            mxf->body_offset += KAG_SIZE; // size of system element
1710
        }
1711
        mxf->edit_units_count++;
1712
    } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1713
        mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1714
            mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1715
    }
1716

    
1717
    mxf_write_klv_fill(s);
1718
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1719
    if (s->oformat == &mxf_d10_muxer) {
1720
        if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1721
            mxf_write_d10_video_packet(s, st, pkt);
1722
        else
1723
            mxf_write_d10_audio_packet(s, st, pkt);
1724
    } else {
1725
        klv_encode_ber4_length(pb, pkt->size); // write length
1726
        put_buffer(pb, pkt->data, pkt->size);
1727
        mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1728
    }
1729

    
1730
    put_flush_packet(pb);
1731

    
1732
    return 0;
1733
}
1734

    
1735
static void mxf_write_random_index_pack(AVFormatContext *s)
1736
{
1737
    MXFContext *mxf = s->priv_data;
1738
    ByteIOContext *pb = s->pb;
1739
    uint64_t pos = url_ftell(pb);
1740
    int i;
1741

    
1742
    put_buffer(pb, random_index_pack_key, 16);
1743
    klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1744

    
1745
    if (mxf->edit_unit_byte_count)
1746
        put_be32(pb, 1); // BodySID of header partition
1747
    else
1748
        put_be32(pb, 0);
1749
    put_be64(pb, 0); // offset of header partition
1750

    
1751
    for (i = 0; i < mxf->body_partitions_count; i++) {
1752
        put_be32(pb, 1); // BodySID
1753
        put_be64(pb, mxf->body_partition_offset[i]);
1754
    }
1755

    
1756
    put_be32(pb, 0); // BodySID of footer partition
1757
    put_be64(pb, mxf->footer_partition_offset);
1758

    
1759
    put_be32(pb, url_ftell(pb) - pos + 4);
1760
}
1761

    
1762
static int mxf_write_footer(AVFormatContext *s)
1763
{
1764
    MXFContext *mxf = s->priv_data;
1765
    ByteIOContext *pb = s->pb;
1766

    
1767
    mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1768

    
1769
    mxf_write_klv_fill(s);
1770
    mxf->footer_partition_offset = url_ftell(pb);
1771
    if (mxf->edit_unit_byte_count) { // no need to repeat index
1772
        mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1773
    } else {
1774
        mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1775

    
1776
        mxf_write_klv_fill(s);
1777
        mxf_write_index_table_segment(s);
1778
    }
1779

    
1780
    mxf_write_klv_fill(s);
1781
    mxf_write_random_index_pack(s);
1782

    
1783
    if (!url_is_streamed(s->pb)) {
1784
        url_fseek(pb, 0, SEEK_SET);
1785
        if (mxf->edit_unit_byte_count) {
1786
            mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1787
            mxf_write_klv_fill(s);
1788
            mxf_write_index_table_segment(s);
1789
        } else {
1790
            mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1791
        }
1792
    }
1793

    
1794
    put_flush_packet(pb);
1795

    
1796
    ff_audio_interleave_close(s);
1797

    
1798
    av_freep(&mxf->index_entries);
1799
    av_freep(&mxf->body_partition_offset);
1800
    av_freep(&mxf->timecode_track->priv_data);
1801
    av_freep(&mxf->timecode_track);
1802

    
1803
    mxf_free(s);
1804

    
1805
    return 0;
1806
}
1807

    
1808
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1809
{
1810
    int i, stream_count = 0;
1811

    
1812
    for (i = 0; i < s->nb_streams; i++)
1813
        stream_count += !!s->streams[i]->last_in_packet_buffer;
1814

    
1815
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1816
        AVPacketList *pktl = s->packet_buffer;
1817
        if (s->nb_streams != stream_count) {
1818
            AVPacketList *last = NULL;
1819
            // find last packet in edit unit
1820
            while (pktl) {
1821
                if (!stream_count || pktl->pkt.stream_index == 0)
1822
                    break;
1823
                last = pktl;
1824
                pktl = pktl->next;
1825
                stream_count--;
1826
            }
1827
            // purge packet queue
1828
            while (pktl) {
1829
                AVPacketList *next = pktl->next;
1830

    
1831
                if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
1832
                    s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
1833
                av_free_packet(&pktl->pkt);
1834
                av_freep(&pktl);
1835
                pktl = next;
1836
            }
1837
            if (last)
1838
                last->next = NULL;
1839
            else {
1840
                s->packet_buffer = NULL;
1841
                s->packet_buffer_end= NULL;
1842
                goto out;
1843
            }
1844
            pktl = s->packet_buffer;
1845
        }
1846

    
1847
        *out = pktl->pkt;
1848
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1849
        s->packet_buffer = pktl->next;
1850
        if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
1851
            s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
1852
        if(!s->packet_buffer)
1853
            s->packet_buffer_end= NULL;
1854
        av_freep(&pktl);
1855
        return 1;
1856
    } else {
1857
    out:
1858
        av_init_packet(out);
1859
        return 0;
1860
    }
1861
}
1862

    
1863
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1864
{
1865
    MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1866
    MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1867

    
1868
    return next->dts > pkt->dts ||
1869
        (next->dts == pkt->dts && sc->order < sc2->order);
1870
}
1871

    
1872
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1873
{
1874
    return ff_audio_rechunk_interleave(s, out, pkt, flush,
1875
                               mxf_interleave_get_packet, mxf_compare_timestamps);
1876
}
1877

    
1878
AVOutputFormat mxf_muxer = {
1879
    "mxf",
1880
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1881
    "application/mxf",
1882
    "mxf",
1883
    sizeof(MXFContext),
1884
    CODEC_ID_PCM_S16LE,
1885
    CODEC_ID_MPEG2VIDEO,
1886
    mxf_write_header,
1887
    mxf_write_packet,
1888
    mxf_write_footer,
1889
    AVFMT_NOTIMESTAMPS,
1890
    NULL,
1891
    mxf_interleave,
1892
};
1893

    
1894
AVOutputFormat mxf_d10_muxer = {
1895
    "mxf_d10",
1896
    NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1897
    "application/mxf",
1898
    NULL,
1899
    sizeof(MXFContext),
1900
    CODEC_ID_PCM_S16LE,
1901
    CODEC_ID_MPEG2VIDEO,
1902
    mxf_write_header,
1903
    mxf_write_packet,
1904
    mxf_write_footer,
1905
    AVFMT_NOTIMESTAMPS,
1906
    NULL,
1907
    mxf_interleave,
1908
};