simplify
[ffmpeg.git] / libavformat / mxfenc.c
1 /*
2  * MXF muxer
3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 /*
24  * References
25  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
26  * SMPTE 377M MXF File Format Specifications
27  * SMPTE 379M MXF Generic Container
28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29  * SMPTE RP210: SMPTE Metadata Dictionary
30  * SMPTE RP224: Registry of SMPTE Universal Labels
31  */
32
33 //#define DEBUG
34
35 #include <math.h>
36 #include <time.h>
37
38 #include "libavutil/fifo.h"
39 #include "libavcodec/bytestream.h"
40 #include "audiointerleave.h"
41 #include "avformat.h"
42 #include "mxf.h"
43
44 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
45 static const int PAL_samples_per_frame[]  = { 1920, 0 };
46
47 AVOutputFormat mxf_d10_muxer;
48
49 #define EDIT_UNITS_PER_BODY 250
50 #define KAG_SIZE 512
51
52 typedef struct {
53     int local_tag;
54     UID uid;
55 } MXFLocalTagPair;
56
57 typedef struct {
58     uint8_t flags;
59     uint64_t offset;
60     unsigned slice_offset; ///< offset of audio slice
61 } MXFIndexEntry;
62
63 typedef struct {
64     AudioInterleaveContext aic;
65     UID track_essence_element_key;
66     int index;            ///< index in mxf_essence_container_uls table
67     const UID *codec_ul;
68     int order;            ///< interleaving order if dts are equal
69     int interlaced;       ///< wether picture is interlaced
70     int temporal_reordering;
71 } MXFStreamContext;
72
73 typedef struct {
74     UID container_ul;
75     UID element_ul;
76     UID codec_ul;
77     void (*write_desc)();
78 } MXFContainerEssenceEntry;
79
80 static const struct {
81     enum CodecID id;
82     int index;
83 } mxf_essence_mappings[] = {
84     { CODEC_ID_MPEG2VIDEO, 0 },
85     { CODEC_ID_PCM_S24LE,  1 },
86     { CODEC_ID_PCM_S16LE,  1 },
87     { 0 }
88 };
89
90 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
91 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
92 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
93 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
94 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
95
96 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
97     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
98       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
99       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
100       mxf_write_mpegvideo_desc },
101     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
102       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
103       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
104       mxf_write_aes3_desc },
105     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
106       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
107       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
108       mxf_write_wav_desc },
109     // D-10 625/50 PAL 50mb/s
110     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
111       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
112       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
113       mxf_write_cdci_desc },
114     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
115       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
116       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
117       mxf_write_generic_sound_desc },
118     // D-10 525/60 NTSC 50mb/s
119     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
120       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
121       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
122       mxf_write_cdci_desc },
123     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
124       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
125       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
126       mxf_write_generic_sound_desc },
127     // D-10 625/50 PAL 40mb/s
128     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
129       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
130       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
131       mxf_write_cdci_desc },
132     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
133       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
134       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
135       mxf_write_generic_sound_desc },
136     // D-10 525/60 NTSC 40mb/s
137     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
138       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
139       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
140       mxf_write_cdci_desc },
141     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
142       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
143       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
144       mxf_write_generic_sound_desc },
145     // D-10 625/50 PAL 30mb/s
146     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
147       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
148       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
149       mxf_write_cdci_desc },
150     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
151       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
152       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
153       mxf_write_generic_sound_desc },
154     // D-10 525/60 NTSC 30mb/s
155     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
156       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
157       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
158       mxf_write_cdci_desc },
159     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
160       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
161       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
162       mxf_write_generic_sound_desc },
163     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
164       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
165       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
166       NULL },
167 };
168
169 typedef struct MXFContext {
170     int64_t footer_partition_offset;
171     int essence_container_count;
172     AVRational time_base;
173     int header_written;
174     MXFIndexEntry *index_entries;
175     unsigned edit_units_count;
176     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
177     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
178     int last_indexed_edit_unit;
179     uint64_t first_edit_unit_offset;
180     uint64_t *body_partition_offset;
181     unsigned body_partitions_count;
182     int last_key_index;  ///< index of last key frame
183     uint64_t duration;
184     AVStream *timecode_track;
185     int timecode_base;       ///< rounded time code base (25 or 30)
186     int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
187     int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
188     int edit_unit_byte_count; ///< fixed edit unit byte count
189 } MXFContext;
190
191 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
192 static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
193
194 /**
195  * complete key for operation pattern, partitions, and primer pack
196  */
197 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
198 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
199 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
200 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
201 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
202 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
203 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
204 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
205 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
206
207 /**
208  * partial key for header metadata
209  */
210 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
211 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
212
213 /**
214  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
215  */
216 static const MXFLocalTagPair mxf_local_tag_batch[] = {
217     // preface set
218     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
219     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
220     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
221     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
222     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
223     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
224     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
225     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
226     // Identification
227     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
228     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
229     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
230     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
231     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
232     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
233     // Content Storage
234     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
235     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
236     // Essence Container Data
237     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
238     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
239     // Package
240     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
241     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
242     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
243     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
244     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
245     // Track
246     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
247     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
248     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
249     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
250     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
251     // Sequence
252     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
253     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
254     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
255     // Source Clip
256     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
257     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
258     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
259     // Timecode Component
260     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
261     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
262     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
263     // File Descriptor
264     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
265     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
266     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
267     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
268     // Generic Picture Essence Descriptor
269     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
270     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
271     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
272     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
273     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
274     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
275     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
276     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
277     // CDCI Picture Essence Descriptor
278     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
279     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
280     // Generic Sound Essence Descriptor
281     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
282     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
283     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
284     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
285     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
286     // Index Table Segment
287     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
288     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
289     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
290     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
291     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
292     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
293     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
294     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
295     // MPEG video Descriptor
296     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
297     // Wave Audio Essence Descriptor
298     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
299     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
300 };
301
302 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
303 {
304     put_buffer(pb, uuid_base, 12);
305     put_be16(pb, type);
306     put_be16(pb, value);
307 }
308
309 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
310 {
311     put_buffer(pb, umid_base, 16);
312     mxf_write_uuid(pb, type, value);
313 }
314
315 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
316 {
317     put_be32(pb, ref_count);
318     put_be32(pb, 16);
319 }
320
321 static int klv_ber_length(uint64_t len)
322 {
323     if (len < 128)
324         return 1;
325     else
326         return (av_log2(len) >> 3) + 2;
327 }
328
329 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
330 {
331     // Determine the best BER size
332     int size;
333     if (len < 128) {
334         //short form
335         put_byte(pb, len);
336         return 1;
337     }
338
339     size = (av_log2(len) >> 3) + 1;
340
341     // long form
342     put_byte(pb, 0x80 + size);
343     while(size) {
344         size--;
345         put_byte(pb, len >> 8 * size & 0xff);
346     }
347     return 0;
348 }
349
350 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
351 {
352     put_byte(pb, 0x80 + 3);
353     put_be24(pb, len);
354 }
355
356 /*
357  * Get essence container ul index
358  */
359 static int mxf_get_essence_container_ul_index(enum CodecID id)
360 {
361     int i;
362     for (i = 0; mxf_essence_mappings[i].id; i++)
363         if (mxf_essence_mappings[i].id == id)
364             return mxf_essence_mappings[i].index;
365     return -1;
366 }
367
368 static void mxf_write_primer_pack(AVFormatContext *s)
369 {
370     ByteIOContext *pb = s->pb;
371     int local_tag_number, i = 0;
372
373     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
374
375     put_buffer(pb, primer_pack_key, 16);
376     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
377
378     put_be32(pb, local_tag_number); // local_tag num
379     put_be32(pb, 18); // item size, always 18 according to the specs
380
381     for (i = 0; i < local_tag_number; i++) {
382         put_be16(pb, mxf_local_tag_batch[i].local_tag);
383         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
384     }
385 }
386
387 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
388 {
389     put_be16(pb, tag);
390     put_be16(pb, size);
391 }
392
393 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
394 {
395     put_buffer(pb, header_metadata_key, 13);
396     put_be24(pb, value);
397 }
398
399 static void mxf_free(AVFormatContext *s)
400 {
401     int i;
402
403     for (i = 0; i < s->nb_streams; i++) {
404         AVStream *st = s->streams[i];
405         av_freep(&st->priv_data);
406     }
407 }
408
409 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
410 {
411     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
412     while (uls->uid[0]) {
413         if (type == uls->id)
414             break;
415         uls++;
416     }
417     return uls;
418 }
419
420 static void mxf_write_essence_container_refs(AVFormatContext *s)
421 {
422     MXFContext *c = s->priv_data;
423     ByteIOContext *pb = s->pb;
424     int i;
425
426     mxf_write_refs_count(pb, c->essence_container_count);
427     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
428     for (i = 0; i < c->essence_container_count; i++) {
429         MXFStreamContext *sc = s->streams[i]->priv_data;
430         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
431     }
432 }
433
434 static void mxf_write_preface(AVFormatContext *s)
435 {
436     MXFContext *mxf = s->priv_data;
437     ByteIOContext *pb = s->pb;
438
439     mxf_write_metadata_key(pb, 0x012f00);
440     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
441     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
442
443     // write preface set uid
444     mxf_write_local_tag(pb, 16, 0x3C0A);
445     mxf_write_uuid(pb, Preface, 0);
446     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
447
448     // last modified date
449     mxf_write_local_tag(pb, 8, 0x3B02);
450     put_be64(pb, mxf->timestamp);
451
452     // write version
453     mxf_write_local_tag(pb, 2, 0x3B05);
454     put_be16(pb, 1);
455
456     // write identification_refs
457     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
458     mxf_write_refs_count(pb, 1);
459     mxf_write_uuid(pb, Identification, 0);
460
461     // write content_storage_refs
462     mxf_write_local_tag(pb, 16, 0x3B03);
463     mxf_write_uuid(pb, ContentStorage, 0);
464
465     // operational pattern
466     mxf_write_local_tag(pb, 16, 0x3B09);
467     if (s->nb_streams > 1) {
468         put_buffer(pb, op1a_ul, 14);
469         put_be16(pb, 0x0900); // multi track
470     } else {
471         put_buffer(pb, op1a_ul, 16);
472     }
473
474     // write essence_container_refs
475     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
476     mxf_write_essence_container_refs(s);
477
478     // write dm_scheme_refs
479     mxf_write_local_tag(pb, 8, 0x3B0B);
480     put_be64(pb, 0);
481 }
482
483 /*
484  * Write a local tag containing an ascii string as utf-16
485  */
486 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
487 {
488     int i, size = strlen(value);
489     mxf_write_local_tag(pb, size*2, tag);
490     for (i = 0; i < size; i++)
491         put_be16(pb, value[i]);
492 }
493
494 static void mxf_write_identification(AVFormatContext *s)
495 {
496     MXFContext *mxf = s->priv_data;
497     ByteIOContext *pb = s->pb;
498     const char *company = "FFmpeg";
499     const char *product = "OP1a Muxer";
500     const char *version;
501     int length;
502
503     mxf_write_metadata_key(pb, 0x013000);
504     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
505
506     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
507         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
508     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
509     klv_encode_ber_length(pb, length);
510
511     // write uid
512     mxf_write_local_tag(pb, 16, 0x3C0A);
513     mxf_write_uuid(pb, Identification, 0);
514     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
515
516     // write generation uid
517     mxf_write_local_tag(pb, 16, 0x3C09);
518     mxf_write_uuid(pb, Identification, 1);
519
520     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
521     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
522     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
523
524     // write product uid
525     mxf_write_local_tag(pb, 16, 0x3C05);
526     mxf_write_uuid(pb, Identification, 2);
527
528     // modification date
529     mxf_write_local_tag(pb, 8, 0x3C06);
530     put_be64(pb, mxf->timestamp);
531 }
532
533 static void mxf_write_content_storage(AVFormatContext *s)
534 {
535     ByteIOContext *pb = s->pb;
536
537     mxf_write_metadata_key(pb, 0x011800);
538     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
539     klv_encode_ber_length(pb, 92);
540
541     // write uid
542     mxf_write_local_tag(pb, 16, 0x3C0A);
543     mxf_write_uuid(pb, ContentStorage, 0);
544     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
545
546     // write package reference
547     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
548     mxf_write_refs_count(pb, 2);
549     mxf_write_uuid(pb, MaterialPackage, 0);
550     mxf_write_uuid(pb, SourcePackage, 0);
551
552     // write essence container data
553     mxf_write_local_tag(pb, 8 + 16, 0x1902);
554     mxf_write_refs_count(pb, 1);
555     mxf_write_uuid(pb, EssenceContainerData, 0);
556 }
557
558 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
559 {
560     MXFContext *mxf = s->priv_data;
561     ByteIOContext *pb = s->pb;
562     MXFStreamContext *sc = st->priv_data;
563
564     mxf_write_metadata_key(pb, 0x013b00);
565     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
566     klv_encode_ber_length(pb, 80);
567
568     // write track uid
569     mxf_write_local_tag(pb, 16, 0x3C0A);
570     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
571     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
572
573     // write track id
574     mxf_write_local_tag(pb, 4, 0x4801);
575     put_be32(pb, st->index);
576
577     // write track number
578     mxf_write_local_tag(pb, 4, 0x4804);
579     if (type == MaterialPackage)
580         put_be32(pb, 0); // track number of material package is 0
581     else
582         put_buffer(pb, sc->track_essence_element_key + 12, 4);
583
584     mxf_write_local_tag(pb, 8, 0x4B01);
585     put_be32(pb, mxf->time_base.den);
586     put_be32(pb, mxf->time_base.num);
587
588     // write origin
589     mxf_write_local_tag(pb, 8, 0x4B02);
590     put_be64(pb, 0);
591
592     // write sequence refs
593     mxf_write_local_tag(pb, 16, 0x4803);
594     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
595 }
596
597 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 };
598
599 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
600 {
601     MXFContext *mxf = s->priv_data;
602     ByteIOContext *pb = s->pb;
603
604     // find data define uls
605     mxf_write_local_tag(pb, 16, 0x0201);
606     if (st == mxf->timecode_track)
607         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
608     else {
609         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
610         put_buffer(pb, data_def_ul->uid, 16);
611     }
612
613     // write duration
614     mxf_write_local_tag(pb, 8, 0x0202);
615     put_be64(pb, mxf->duration);
616 }
617
618 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
619 {
620     MXFContext *mxf = s->priv_data;
621     ByteIOContext *pb = s->pb;
622     enum MXFMetadataSetType component;
623
624     mxf_write_metadata_key(pb, 0x010f00);
625     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
626     klv_encode_ber_length(pb, 80);
627
628     mxf_write_local_tag(pb, 16, 0x3C0A);
629     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
630
631     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
632     mxf_write_common_fields(s, st);
633
634     // write structural component
635     mxf_write_local_tag(pb, 16 + 8, 0x1001);
636     mxf_write_refs_count(pb, 1);
637     if (st == mxf->timecode_track)
638         component = TimecodeComponent;
639     else if (type == MaterialPackage)
640         component = SourceClip;
641     else
642         component = SourceClip+TypeBottom;
643     mxf_write_uuid(pb, component, st->index);
644 }
645
646 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st)
647 {
648     MXFContext *mxf = s->priv_data;
649     ByteIOContext *pb = s->pb;
650
651     mxf_write_metadata_key(pb, 0x011400);
652     klv_encode_ber_length(pb, 75);
653
654     // UID
655     mxf_write_local_tag(pb, 16, 0x3C0A);
656     mxf_write_uuid(pb, TimecodeComponent, st->index);
657
658     mxf_write_common_fields(s, st);
659
660     // Start Time Code
661     mxf_write_local_tag(pb, 8, 0x1501);
662     put_be64(pb, mxf->timecode_start);
663
664     // Rounded Time Code Base
665     mxf_write_local_tag(pb, 2, 0x1502);
666     put_be16(pb, mxf->timecode_base);
667
668     // Drop Frame
669     mxf_write_local_tag(pb, 1, 0x1503);
670     put_byte(pb, mxf->timecode_drop_frame);
671 }
672
673 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
674 {
675     ByteIOContext *pb = s->pb;
676     int i;
677
678     mxf_write_metadata_key(pb, 0x011100);
679     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
680     klv_encode_ber_length(pb, 108);
681
682     // write uid
683     mxf_write_local_tag(pb, 16, 0x3C0A);
684     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
685
686     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
687     mxf_write_common_fields(s, st);
688
689     // write start_position
690     mxf_write_local_tag(pb, 8, 0x1201);
691     put_be64(pb, 0);
692
693     // write source package uid, end of the reference
694     mxf_write_local_tag(pb, 32, 0x1101);
695     if (type == SourcePackage) {
696         for (i = 0; i < 4; i++)
697             put_be64(pb, 0);
698     } else
699         mxf_write_umid(pb, SourcePackage, 0);
700
701     // write source track id
702     mxf_write_local_tag(pb, 4, 0x1102);
703     if (type == SourcePackage)
704         put_be32(pb, 0);
705     else
706         put_be32(pb, st->index);
707 }
708
709 static void mxf_write_multi_descriptor(AVFormatContext *s)
710 {
711     MXFContext *mxf = s->priv_data;
712     ByteIOContext *pb = s->pb;
713     const uint8_t *ul;
714     int i;
715
716     mxf_write_metadata_key(pb, 0x014400);
717     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
718     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
719
720     mxf_write_local_tag(pb, 16, 0x3C0A);
721     mxf_write_uuid(pb, MultipleDescriptor, 0);
722     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
723
724     // write sample rate
725     mxf_write_local_tag(pb, 8, 0x3001);
726     put_be32(pb, mxf->time_base.den);
727     put_be32(pb, mxf->time_base.num);
728
729     // write essence container ul
730     mxf_write_local_tag(pb, 16, 0x3004);
731     if (mxf->essence_container_count > 1)
732         ul = multiple_desc_ul;
733     else {
734         MXFStreamContext *sc = s->streams[0]->priv_data;
735         ul = mxf_essence_container_uls[sc->index].container_ul;
736     }
737     put_buffer(pb, ul, 16);
738
739     // write sub descriptor refs
740     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
741     mxf_write_refs_count(pb, s->nb_streams);
742     for (i = 0; i < s->nb_streams; i++)
743         mxf_write_uuid(pb, SubDescriptor, i);
744 }
745
746 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
747 {
748     MXFContext *mxf = s->priv_data;
749     MXFStreamContext *sc = st->priv_data;
750     ByteIOContext *pb = s->pb;
751
752     put_buffer(pb, key, 16);
753     klv_encode_ber_length(pb, size);
754
755     mxf_write_local_tag(pb, 16, 0x3C0A);
756     mxf_write_uuid(pb, SubDescriptor, st->index);
757
758     mxf_write_local_tag(pb, 4, 0x3006);
759     put_be32(pb, st->index);
760
761     mxf_write_local_tag(pb, 8, 0x3001);
762     put_be32(pb, mxf->time_base.den);
763     put_be32(pb, mxf->time_base.num);
764
765     mxf_write_local_tag(pb, 16, 0x3004);
766     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
767 }
768
769 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
770 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
771 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
772 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
773 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
774
775 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
776 {
777     MXFStreamContext *sc = st->priv_data;
778     ByteIOContext *pb = s->pb;
779     int stored_height = (st->codec->height+15)/16*16;
780     int display_height;
781     AVRational dar;
782     int f1, f2;
783
784     mxf_write_generic_desc(s, st, key, size);
785
786     mxf_write_local_tag(pb, 4, 0x3203);
787     put_be32(pb, st->codec->width);
788
789     mxf_write_local_tag(pb, 4, 0x3202);
790     put_be32(pb, stored_height>>sc->interlaced);
791
792     mxf_write_local_tag(pb, 4, 0x3209);
793     put_be32(pb, st->codec->width);
794
795     if (st->codec->height == 608) // PAL + VBI
796         display_height = 576;
797     else if (st->codec->height == 512)  // NTSC + VBI
798         display_height = 486;
799     else
800         display_height = st->codec->height;
801
802     mxf_write_local_tag(pb, 4, 0x3208);
803     put_be32(pb, display_height>>sc->interlaced);
804
805     // component depth
806     mxf_write_local_tag(pb, 4, 0x3301);
807     put_be32(pb, 8);
808
809     // horizontal subsampling
810     mxf_write_local_tag(pb, 4, 0x3302);
811     put_be32(pb, 2);
812
813     // frame layout
814     mxf_write_local_tag(pb, 1, 0x320C);
815     put_byte(pb, sc->interlaced);
816
817     // video line map
818     switch (st->codec->height) {
819     case  576: f1 = 23; f2 = 336; break;
820     case  608: f1 =  7; f2 = 320; break;
821     case  480: f1 = 20; f2 = 283; break;
822     case  512: f1 =  7; f2 = 270; break;
823     case  720: f1 = 26; f2 =   0; break; // progressive
824     case 1080: f1 = 21; f2 = 584; break;
825     default:   f1 =  0; f2 =   0; break;
826     }
827
828     if (!sc->interlaced) {
829         f2  = 0;
830         f1 *= 2;
831     }
832
833     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
834     put_be32(pb, sc->interlaced ? 2 : 1);
835     put_be32(pb, 4);
836     put_be32(pb, f1);
837     if (sc->interlaced)
838         put_be32(pb, f2);
839
840     av_reduce(&dar.num, &dar.den,
841               st->codec->width*st->codec->sample_aspect_ratio.num,
842               st->codec->height*st->codec->sample_aspect_ratio.den,
843               1024*1024);
844
845     mxf_write_local_tag(pb, 8, 0x320E);
846     put_be32(pb, dar.num);
847     put_be32(pb, dar.den);
848
849     mxf_write_local_tag(pb, 16, 0x3201);
850     put_buffer(pb, *sc->codec_ul, 16);
851 }
852
853 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
854 {
855     MXFStreamContext *sc = st->priv_data;
856     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 161+sc->interlaced*4);
857 }
858
859 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
860 {
861     MXFStreamContext *sc = st->priv_data;
862     ByteIOContext *pb = s->pb;
863
864     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 169+sc->interlaced*4);
865
866     // bit rate
867     mxf_write_local_tag(pb, 4, 0x8000);
868     put_be32(pb, st->codec->bit_rate);
869 }
870
871 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
872 {
873     ByteIOContext *pb = s->pb;
874
875     mxf_write_generic_desc(s, st, key, size);
876
877     // audio locked
878     mxf_write_local_tag(pb, 1, 0x3D02);
879     put_byte(pb, 1);
880
881     // write audio sampling rate
882     mxf_write_local_tag(pb, 8, 0x3D03);
883     put_be32(pb, st->codec->sample_rate);
884     put_be32(pb, 1);
885
886     mxf_write_local_tag(pb, 4, 0x3D07);
887     put_be32(pb, st->codec->channels);
888
889     mxf_write_local_tag(pb, 4, 0x3D01);
890     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
891 }
892
893 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
894 {
895     ByteIOContext *pb = s->pb;
896
897     mxf_write_generic_sound_common(s, st, key, size);
898
899     mxf_write_local_tag(pb, 2, 0x3D0A);
900     put_be16(pb, st->codec->block_align);
901
902     // avg bytes per sec
903     mxf_write_local_tag(pb, 4, 0x3D09);
904     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
905 }
906
907 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
908 {
909     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 107);
910 }
911
912 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
913 {
914     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 107);
915 }
916
917 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
918 {
919     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 93);
920 }
921
922 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
923 {
924     MXFContext *mxf = s->priv_data;
925     ByteIOContext *pb = s->pb;
926     int i, track_count;
927
928     if (type == MaterialPackage) {
929         track_count = s->nb_streams + 1; // add timecode track
930         mxf_write_metadata_key(pb, 0x013600);
931         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
932         klv_encode_ber_length(pb, 92 + 16*track_count);
933     } else {
934         track_count = s->nb_streams;
935         mxf_write_metadata_key(pb, 0x013700);
936         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
937         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
938     }
939
940     // write uid
941     mxf_write_local_tag(pb, 16, 0x3C0A);
942     mxf_write_uuid(pb, type, 0);
943     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
944     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
945
946     // write package umid
947     mxf_write_local_tag(pb, 32, 0x4401);
948     mxf_write_umid(pb, type, 0);
949     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
950
951     // package creation date
952     mxf_write_local_tag(pb, 8, 0x4405);
953     put_be64(pb, mxf->timestamp);
954
955     // package modified date
956     mxf_write_local_tag(pb, 8, 0x4404);
957     put_be64(pb, mxf->timestamp);
958
959     // write track refs
960     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
961     mxf_write_refs_count(pb, track_count);
962     for (i = 0; i < s->nb_streams; i++)
963         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
964     if (type == MaterialPackage)
965         mxf_write_uuid(pb, Track, s->nb_streams); // timecode track
966
967     // write multiple descriptor reference
968     if (type == SourcePackage) {
969         mxf_write_local_tag(pb, 16, 0x4701);
970         if (s->nb_streams > 1) {
971             mxf_write_uuid(pb, MultipleDescriptor, 0);
972             mxf_write_multi_descriptor(s);
973         } else
974             mxf_write_uuid(pb, SubDescriptor, 0);
975     } else {
976         // write timecode track
977         mxf_write_track(s, mxf->timecode_track, type);
978         mxf_write_sequence(s, mxf->timecode_track, type);
979         mxf_write_timecode_component(s, mxf->timecode_track);
980     }
981
982     for (i = 0; i < s->nb_streams; i++) {
983         AVStream *st = s->streams[i];
984         mxf_write_track(s, st, type);
985         mxf_write_sequence(s, st, type);
986         mxf_write_structural_component(s, st, type);
987
988         if (type == SourcePackage) {
989             MXFStreamContext *sc = st->priv_data;
990             mxf_essence_container_uls[sc->index].write_desc(s, st);
991         }
992     }
993 }
994
995 static int mxf_write_essence_container_data(AVFormatContext *s)
996 {
997     ByteIOContext *pb = s->pb;
998
999     mxf_write_metadata_key(pb, 0x012300);
1000     klv_encode_ber_length(pb, 72);
1001
1002     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1003     mxf_write_uuid(pb, EssenceContainerData, 0);
1004
1005     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1006     mxf_write_umid(pb, SourcePackage, 0);
1007
1008     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1009     put_be32(pb, 1);
1010
1011     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1012     put_be32(pb, 2);
1013
1014     return 0;
1015 }
1016
1017 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1018 {
1019     mxf_write_preface(s);
1020     mxf_write_identification(s);
1021     mxf_write_content_storage(s);
1022     mxf_write_package(s, MaterialPackage);
1023     mxf_write_package(s, SourcePackage);
1024     mxf_write_essence_container_data(s);
1025     return 0;
1026 }
1027
1028 static unsigned klv_fill_size(uint64_t size)
1029 {
1030     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1031     if (pad < 20) // smallest fill item possible
1032         return pad + KAG_SIZE;
1033     else
1034         return pad & (KAG_SIZE-1);
1035 }
1036
1037 static void mxf_write_index_table_segment(AVFormatContext *s)
1038 {
1039     MXFContext *mxf = s->priv_data;
1040     ByteIOContext *pb = s->pb;
1041     int i, j;
1042     int temporal_reordering = 0;
1043     int key_index = mxf->last_key_index;
1044
1045     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1046
1047     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1048         return;
1049
1050     put_buffer(pb, index_table_segment_key, 16);
1051
1052     if (mxf->edit_unit_byte_count) {
1053         klv_encode_ber_length(pb, 85);
1054     } else {
1055         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1056                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
1057     }
1058
1059     // instance id
1060     mxf_write_local_tag(pb, 16, 0x3C0A);
1061     mxf_write_uuid(pb, IndexTableSegment, 0);
1062
1063     // index edit rate
1064     mxf_write_local_tag(pb, 8, 0x3F0B);
1065     put_be32(pb, mxf->time_base.num);
1066     put_be32(pb, mxf->time_base.den);
1067
1068     // index start position
1069     mxf_write_local_tag(pb, 8, 0x3F0C);
1070     put_be64(pb, mxf->last_indexed_edit_unit);
1071
1072     // index duration
1073     mxf_write_local_tag(pb, 8, 0x3F0D);
1074     put_be64(pb, mxf->edit_units_count);
1075
1076     // edit unit byte count
1077     mxf_write_local_tag(pb, 4, 0x3F05);
1078     put_be32(pb, mxf->edit_unit_byte_count);
1079
1080     // index sid
1081     mxf_write_local_tag(pb, 4, 0x3F06);
1082     put_be32(pb, 2);
1083
1084     // body sid
1085     mxf_write_local_tag(pb, 4, 0x3F07);
1086     put_be32(pb, 1);
1087
1088     // real slice count - 1
1089     mxf_write_local_tag(pb, 1, 0x3F08);
1090     put_byte(pb, mxf->slice_count);
1091
1092     if (!mxf->edit_unit_byte_count) {
1093         // delta entry array
1094         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1095         put_be32(pb, s->nb_streams+1); // num of entries
1096         put_be32(pb, 6);               // size of one entry
1097         // write system item delta entry
1098         put_byte(pb, 0);
1099         put_byte(pb, 0); // slice entry
1100         put_be32(pb, 0); // element delta
1101         for (i = 0; i < s->nb_streams; i++) {
1102             AVStream *st = s->streams[i];
1103             MXFStreamContext *sc = st->priv_data;
1104             put_byte(pb, sc->temporal_reordering);
1105             if (sc->temporal_reordering)
1106                 temporal_reordering = 1;
1107             if (i == 0) { // video track
1108                 put_byte(pb, 0); // slice number
1109                 put_be32(pb, KAG_SIZE); // system item size including klv fill
1110             } else { // audio track
1111                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1112                 audio_frame_size += klv_fill_size(audio_frame_size);
1113                 put_byte(pb, 1);
1114                 put_be32(pb, (i-1)*audio_frame_size); // element delta
1115             }
1116         }
1117
1118         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1119         put_be32(pb, mxf->edit_units_count);  // num of entries
1120         put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1121         for (i = 0; i < mxf->edit_units_count; i++) {
1122             if (temporal_reordering) {
1123                 int temporal_offset = 0;
1124                 for (j = i+1; j < mxf->edit_units_count; j++) {
1125                     temporal_offset++;
1126                     if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1127                         // next is not b, so is reordered
1128                         if (!(mxf->index_entries[i+1].flags & 0x10)) {
1129                             if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1130                                 temporal_offset = 0;
1131                             else
1132                                 temporal_offset = -temporal_offset;
1133                         }
1134                         break;
1135                     }
1136                 }
1137                 put_byte(pb, temporal_offset);
1138             } else
1139                 put_byte(pb, 0);
1140             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1141                 mxf->last_key_index = key_index;
1142                 key_index = i;
1143             }
1144             if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1145                 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1146                 put_byte(pb, mxf->last_key_index - i);
1147             } else {
1148                 put_byte(pb, key_index - i); // key frame offset
1149                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1150                     mxf->last_key_index = key_index;
1151             }
1152             put_byte(pb, mxf->index_entries[i].flags);
1153             // stream offset
1154             put_be64(pb, mxf->index_entries[i].offset - mxf->first_edit_unit_offset);
1155             if (s->nb_streams > 1)
1156                 put_be32(pb, mxf->index_entries[i].slice_offset);
1157         }
1158
1159         mxf->last_key_index = key_index - mxf->edit_units_count;
1160         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1161         mxf->edit_units_count = 0;
1162     }
1163 }
1164
1165 static void mxf_write_klv_fill(AVFormatContext *s)
1166 {
1167     unsigned pad = klv_fill_size(url_ftell(s->pb));
1168     if (pad) {
1169         put_buffer(s->pb, klv_fill_key, 16);
1170         pad -= 16 + 4;
1171         klv_encode_ber4_length(s->pb, pad);
1172         for (; pad; pad--)
1173             put_byte(s->pb, 0);
1174         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1175     }
1176 }
1177
1178 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1179                                 int indexsid,
1180                                 const uint8_t *key, int write_metadata)
1181 {
1182     MXFContext *mxf = s->priv_data;
1183     ByteIOContext *pb = s->pb;
1184     int64_t header_byte_count_offset;
1185     unsigned index_byte_count = 0;
1186     uint64_t partition_offset = url_ftell(pb);
1187
1188     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1189         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1190             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1191     else if (mxf->edit_unit_byte_count && indexsid)
1192         index_byte_count = 85;
1193
1194     if (index_byte_count) {
1195         // add encoded ber length
1196         index_byte_count += 16 + klv_ber_length(index_byte_count);
1197         index_byte_count += klv_fill_size(index_byte_count);
1198     }
1199
1200     if (!memcmp(key, body_partition_key, 16)) {
1201         mxf->body_partition_offset =
1202             av_realloc(mxf->body_partition_offset,
1203                        (mxf->body_partitions_count+1)*
1204                        sizeof(*mxf->body_partition_offset));
1205         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1206     }
1207
1208     // write klv
1209     put_buffer(pb, key, 16);
1210     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1211
1212     // write partition value
1213     put_be16(pb, 1); // majorVersion
1214     put_be16(pb, 2); // minorVersion
1215     put_be32(pb, KAG_SIZE); // KAGSize
1216
1217     put_be64(pb, partition_offset); // ThisPartition
1218
1219     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1220         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1221     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1222         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1223     else
1224         put_be64(pb, 0);
1225
1226     put_be64(pb, mxf->footer_partition_offset); // footerPartition
1227
1228     // set offset
1229     header_byte_count_offset = url_ftell(pb);
1230     put_be64(pb, 0); // headerByteCount, update later
1231
1232     // indexTable
1233     put_be64(pb, index_byte_count); // indexByteCount
1234     put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1235
1236     // BodyOffset
1237     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1238         uint64_t partition_end = url_ftell(pb) + 8 + 4 + 16 + 8 +
1239             16*mxf->essence_container_count;
1240         put_be64(pb, partition_end + klv_fill_size(partition_end) +
1241                  index_byte_count - mxf->first_edit_unit_offset);
1242     } else
1243         put_be64(pb, 0);
1244
1245     put_be32(pb, bodysid); // bodySID
1246
1247     // operational pattern
1248     if (s->nb_streams > 1) {
1249         put_buffer(pb, op1a_ul, 14);
1250         put_be16(pb, 0x0900); // multi track
1251     } else {
1252         put_buffer(pb, op1a_ul, 16);
1253     }
1254
1255     // essence container
1256     mxf_write_essence_container_refs(s);
1257
1258     if (write_metadata) {
1259         // mark the start of the headermetadata and calculate metadata size
1260         int64_t pos, start;
1261         unsigned header_byte_count;
1262
1263         mxf_write_klv_fill(s);
1264         start = url_ftell(s->pb);
1265         mxf_write_primer_pack(s);
1266         mxf_write_header_metadata_sets(s);
1267         pos = url_ftell(s->pb);
1268         header_byte_count = pos - start + klv_fill_size(pos);
1269
1270         // update header_byte_count
1271         url_fseek(pb, header_byte_count_offset, SEEK_SET);
1272         put_be64(pb, header_byte_count);
1273         url_fseek(pb, pos, SEEK_SET);
1274     }
1275
1276     put_flush_packet(pb);
1277 }
1278
1279 static const UID mxf_mpeg2_codec_uls[] = {
1280     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1281     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1282     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1283     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1284     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1285     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1286     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1287     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1288 };
1289
1290 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1291 {
1292     if (avctx->profile == 4) { // Main
1293         if (avctx->level == 8) // Main
1294             return avctx->gop_size ?
1295                 &mxf_mpeg2_codec_uls[1] :
1296                 &mxf_mpeg2_codec_uls[0];
1297         else if (avctx->level == 4) // High
1298             return avctx->gop_size ?
1299                 &mxf_mpeg2_codec_uls[5] :
1300                 &mxf_mpeg2_codec_uls[4];
1301     } else if (avctx->profile == 0) { // 422
1302         if (avctx->level == 5) // Main
1303             return avctx->gop_size ?
1304                 &mxf_mpeg2_codec_uls[3] :
1305                 &mxf_mpeg2_codec_uls[2];
1306         else if (avctx->level == 2) // High
1307             return avctx->gop_size ?
1308                 &mxf_mpeg2_codec_uls[7] :
1309                 &mxf_mpeg2_codec_uls[6];
1310     }
1311     return NULL;
1312 }
1313
1314 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1315 {
1316     MXFStreamContext *sc = st->priv_data;
1317     MXFContext *mxf = s->priv_data;
1318     uint32_t c = -1;
1319     int i;
1320
1321     *flags = 0;
1322
1323     for(i = 0; i < pkt->size - 4; i++) {
1324         c = (c<<8) + pkt->data[i];
1325         if (c == 0x1B5) {
1326             if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1327                 st->codec->profile = pkt->data[i+1] & 0x07;
1328                 st->codec->level   = pkt->data[i+2] >> 4;
1329             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1330                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1331                 break;
1332             }
1333         } else if (c == 0x1b8) { // gop
1334             if (i + 4 < pkt->size) {
1335                 if (pkt->data[i+4]>>6 & 0x01) // closed
1336                     *flags |= 0x80; // random access
1337                 if (!mxf->header_written) {
1338                     unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1339                     unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1340                     unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1341                     unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1342                     mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1343                     mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1344                         mxf->timecode_base + frames;
1345                     if (mxf->timecode_drop_frame) {
1346                         unsigned tminutes = 60 * hours + minutes;
1347                         mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1348                     }
1349                     av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1350                            hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1351                 }
1352             }
1353         } else if (c == 0x1b3) { // seq
1354             *flags |= 0x40;
1355         } else if (c == 0x100) { // pic
1356             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1357             if (pict_type == 2) { // P frame
1358                 *flags |= 0x22;
1359                 st->codec->gop_size = 1;
1360             } else if (pict_type == 3) { // B frame
1361                 *flags |= 0x33;
1362                 sc->temporal_reordering = -1;
1363             } else if (!pict_type) {
1364                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1365                 return 0;
1366             }
1367         }
1368     }
1369     if (s->oformat != &mxf_d10_muxer)
1370         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1371     return !!sc->codec_ul;
1372 }
1373
1374 static uint64_t mxf_parse_timestamp(time_t timestamp)
1375 {
1376     struct tm *time = localtime(&timestamp);
1377     return (uint64_t)(time->tm_year+1900) << 48 |
1378            (uint64_t)(time->tm_mon+1)     << 40 |
1379            (uint64_t) time->tm_mday       << 32 |
1380                       time->tm_hour       << 24 |
1381                       time->tm_min        << 16 |
1382                       time->tm_sec        << 8;
1383 }
1384
1385 static int mxf_write_header(AVFormatContext *s)
1386 {
1387     MXFContext *mxf = s->priv_data;
1388     int i;
1389     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1390     const int *samples_per_frame = NULL;
1391
1392     for (i = 0; i < s->nb_streams; i++) {
1393         AVStream *st = s->streams[i];
1394         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1395         if (!sc)
1396             return AVERROR(ENOMEM);
1397         st->priv_data = sc;
1398
1399         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1400             if (i != 0) {
1401                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1402                 return -1;
1403             }
1404             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1405                 samples_per_frame = PAL_samples_per_frame;
1406                 mxf->time_base = (AVRational){ 1, 25 };
1407                 mxf->timecode_base = 25;
1408             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1409                 samples_per_frame = NTSC_samples_per_frame;
1410                 mxf->time_base = (AVRational){ 1001, 30000 };
1411                 mxf->timecode_base = 30;
1412             } else {
1413                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1414                 return -1;
1415             }
1416             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1417             if (s->oformat == &mxf_d10_muxer) {
1418                 if (st->codec->bit_rate == 50000000)
1419                     if (mxf->time_base.den == 25) sc->index = 3;
1420                     else                          sc->index = 5;
1421                 else if (st->codec->bit_rate == 40000000)
1422                     if (mxf->time_base.den == 25) sc->index = 7;
1423                     else                          sc->index = 9;
1424                 else if (st->codec->bit_rate == 30000000)
1425                     if (mxf->time_base.den == 25) sc->index = 11;
1426                     else                          sc->index = 13;
1427                 else {
1428                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1429                     return -1;
1430                 }
1431
1432                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1433                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1434                     mxf->time_base.num / (8*mxf->time_base.den);
1435                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1436                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1437                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1438             }
1439         } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1440             if (st->codec->sample_rate != 48000) {
1441                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1442                 return -1;
1443             }
1444             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1445             if (s->oformat == &mxf_d10_muxer) {
1446                 if (st->index != 1) {
1447                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1448                     return -1;
1449                 }
1450                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1451                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1452                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1453                 }
1454                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1455             } else
1456             mxf->slice_count = 1;
1457         }
1458
1459         if (!sc->index) {
1460             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1461             if (sc->index == -1) {
1462                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1463                        "codec not currently supported in container\n", i);
1464                 return -1;
1465             }
1466         }
1467
1468         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1469
1470         if (!present[sc->index]) {
1471             present[sc->index] = 1;
1472             mxf->essence_container_count++;
1473         } else
1474             present[sc->index]++;
1475
1476         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1477         sc->track_essence_element_key[15] = present[sc->index];
1478         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1479     }
1480
1481     if (s->oformat == &mxf_d10_muxer) {
1482         mxf->essence_container_count = 1;
1483     }
1484
1485     for (i = 0; i < s->nb_streams; i++) {
1486         MXFStreamContext *sc = s->streams[i]->priv_data;
1487         // update element count
1488         sc->track_essence_element_key[13] = present[sc->index];
1489         sc->order = AV_RB32(sc->track_essence_element_key+12);
1490     }
1491
1492     mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1493     mxf->duration = -1;
1494
1495     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1496     if (!mxf->timecode_track)
1497         return AVERROR(ENOMEM);
1498     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1499     if (!mxf->timecode_track->priv_data)
1500         return AVERROR(ENOMEM);
1501     mxf->timecode_track->index = s->nb_streams;
1502
1503     if (!samples_per_frame)
1504         samples_per_frame = PAL_samples_per_frame;
1505
1506     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1507         return -1;
1508
1509     return 0;
1510 }
1511
1512 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1513 static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 };
1514
1515 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1516 {
1517     return (0                                    << 31) | // color frame flag
1518            (0                                    << 30) | // drop  frame flag
1519            ( ((frame % fps) / 10)                << 28) | // tens  of frames
1520            ( ((frame % fps) % 10)                << 24) | // units of frames
1521            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1522            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1523            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1524            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1525            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1526            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1527            (0                                    <<  7) | // b1
1528            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1529            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1530            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1531 }
1532
1533 static void mxf_write_system_item(AVFormatContext *s)
1534 {
1535     MXFContext *mxf = s->priv_data;
1536     ByteIOContext *pb = s->pb;
1537     unsigned frame;
1538     uint32_t time_code;
1539
1540     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1541
1542     // write system metadata pack
1543     put_buffer(pb, system_metadata_pack_key, 16);
1544     klv_encode_ber4_length(pb, 57);
1545     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1546     put_byte(pb, 0x04); // content package rate
1547     put_byte(pb, 0x00); // content package type
1548     put_be16(pb, 0x00); // channel handle
1549     put_be16(pb, frame); // continuity count
1550     if (mxf->essence_container_count > 1)
1551         put_buffer(pb, multiple_desc_ul, 16);
1552     else {
1553         MXFStreamContext *sc = s->streams[0]->priv_data;
1554         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1555     }
1556     put_byte(pb, 0);
1557     put_be64(pb, 0);
1558     put_be64(pb, 0); // creation date/time stamp
1559
1560     put_byte(pb, 0x81); // SMPTE 12M time code
1561     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1562     put_be32(pb, time_code);
1563     put_be32(pb, 0); // binary group data
1564     put_be64(pb, 0);
1565
1566     // write system metadata package set
1567     put_buffer(pb, system_metadata_package_set_key, 16);
1568     klv_encode_ber4_length(pb, 35);
1569     put_byte(pb, 0x83); // UMID
1570     put_be16(pb, 0x20);
1571     mxf_write_umid(pb, SourcePackage, 0);
1572 }
1573
1574 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1575 {
1576     MXFContext *mxf = s->priv_data;
1577     ByteIOContext *pb = s->pb;
1578     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1579         (8*mxf->time_base.den); // frame size
1580     int pad;
1581
1582     packet_size += 16 + 4;
1583     packet_size += klv_fill_size(packet_size);
1584
1585     klv_encode_ber4_length(pb, pkt->size);
1586     put_buffer(pb, pkt->data, pkt->size);
1587
1588     // ensure CBR muxing by padding to correct video frame size
1589     pad = packet_size - pkt->size - 16 - 4;
1590     if (pad > 20) {
1591         put_buffer(s->pb, klv_fill_key, 16);
1592         pad -= 16 + 4;
1593         klv_encode_ber4_length(s->pb, pad);
1594         for (; pad; pad--)
1595             put_byte(s->pb, 0);
1596         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1597     } else {
1598         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1599         for (; pad > 0; pad--)
1600             put_byte(s->pb, 0);
1601     }
1602 }
1603
1604 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1605 {
1606     MXFContext *mxf = s->priv_data;
1607     ByteIOContext *pb = s->pb;
1608     int frame_size = (pkt->size<<3) /
1609         (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1610     uint8_t *samples = pkt->data;
1611     uint8_t *end = pkt->data + pkt->size;
1612     int i;
1613
1614     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1615
1616     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1617     put_le16(pb, frame_size);
1618     put_byte(pb, (1<<st->codec->channels)-1);
1619
1620     while (samples < end) {
1621         for (i = 0; i < st->codec->channels; i++) {
1622             uint32_t sample;
1623             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1624                 sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1625                 samples += 3;
1626             } else {
1627                 sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1628                 samples += 2;
1629             }
1630             put_le32(pb, sample);
1631         }
1632         for (; i < 8; i++)
1633             put_le32(pb, 0);
1634     }
1635 }
1636
1637 static int mxf_write_d10_packet(AVFormatContext *s, AVPacket *pkt)
1638 {
1639     MXFContext *mxf = s->priv_data;
1640     ByteIOContext *pb = s->pb;
1641     AVStream *st = s->streams[pkt->stream_index];
1642     MXFStreamContext *sc = st->priv_data;
1643     int flags = 0;
1644
1645     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1646         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1647             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1648             return -1;
1649         }
1650     }
1651
1652     if (!mxf->header_written) {
1653         mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1654         mxf->header_written = 1;
1655         mxf_write_klv_fill(s);
1656         mxf_write_index_table_segment(s);
1657     }
1658
1659     if (st->index == 0) {
1660         mxf_write_klv_fill(s);
1661         mxf_write_system_item(s);
1662
1663         mxf->edit_units_count++;
1664     }
1665
1666     mxf_write_klv_fill(s);
1667     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1668     if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1669         mxf_write_d10_video_packet(s, st, pkt);
1670     else
1671         mxf_write_d10_audio_packet(s, st, pkt);
1672
1673     put_flush_packet(pb);
1674
1675     return 0;
1676 }
1677
1678 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1679 {
1680     MXFContext *mxf = s->priv_data;
1681     ByteIOContext *pb = s->pb;
1682     AVStream *st = s->streams[pkt->stream_index];
1683     MXFStreamContext *sc = st->priv_data;
1684     int flags = 0;
1685
1686     if (!(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1687         mxf->index_entries = av_realloc(mxf->index_entries,
1688             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1689         if (!mxf->index_entries) {
1690             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1691             return -1;
1692         }
1693     }
1694
1695     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1696         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1697             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1698             return -1;
1699         }
1700     }
1701
1702     if (!mxf->header_written) {
1703         mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1704         mxf->header_written = 1;
1705     }
1706
1707     if (st->index == 0) {
1708         if ((!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1709             !(flags & 0x33)) { // I frame, Gop start
1710             mxf_write_klv_fill(s);
1711             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1712
1713             mxf_write_klv_fill(s);
1714             mxf_write_index_table_segment(s);
1715         }
1716
1717         mxf_write_klv_fill(s);
1718         mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1719         mxf->index_entries[mxf->edit_units_count].flags = flags;
1720         if (!mxf->first_edit_unit_offset)
1721             mxf->first_edit_unit_offset = mxf->index_entries[0].offset;
1722         mxf_write_system_item(s);
1723
1724         mxf->edit_units_count++;
1725     } else if (st->index == 1) {
1726         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1727             url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1728     }
1729
1730     mxf_write_klv_fill(s);
1731     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1732     klv_encode_ber4_length(pb, pkt->size); // write length
1733     put_buffer(pb, pkt->data, pkt->size); // write value
1734
1735     put_flush_packet(pb);
1736     return 0;
1737 }
1738
1739 static void mxf_write_random_index_pack(AVFormatContext *s)
1740 {
1741     MXFContext *mxf = s->priv_data;
1742     ByteIOContext *pb = s->pb;
1743     uint64_t pos = url_ftell(pb);
1744     int i;
1745
1746     put_buffer(pb, random_index_pack_key, 16);
1747     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1748
1749     put_be32(pb, 0); // BodySID of header partition
1750     put_be64(pb, 0); // offset of header partition
1751
1752     for (i = 0; i < mxf->body_partitions_count; i++) {
1753         put_be32(pb, 1); // BodySID
1754         put_be64(pb, mxf->body_partition_offset[i]);
1755     }
1756
1757     put_be32(pb, 0); // BodySID of footer partition
1758     put_be64(pb, mxf->footer_partition_offset);
1759
1760     put_be32(pb, url_ftell(pb) - pos + 4);
1761 }
1762
1763 static int mxf_write_footer(AVFormatContext *s)
1764 {
1765     MXFContext *mxf = s->priv_data;
1766     ByteIOContext *pb = s->pb;
1767
1768     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1769
1770     mxf_write_klv_fill(s);
1771     mxf->footer_partition_offset = url_ftell(pb);
1772     if (mxf->edit_unit_byte_count) { // no need to repeat index
1773         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1774     } else {
1775         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1776
1777         mxf_write_klv_fill(s);
1778         mxf_write_index_table_segment(s);
1779     }
1780
1781     mxf_write_klv_fill(s);
1782     mxf_write_random_index_pack(s);
1783
1784     if (!url_is_streamed(s->pb)) {
1785         int index;
1786         url_fseek(pb, 0, SEEK_SET);
1787         if (s->oformat == &mxf_d10_muxer) {
1788             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1789             index = 1;
1790         } else if (mxf->edit_unit_byte_count) {
1791             mxf_write_partition(s, 0, 2, header_closed_partition_key, 1);
1792             index = 1;
1793         } else {
1794             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1795             index = 0;
1796         }
1797         if (index) {
1798             mxf_write_klv_fill(s);
1799             mxf_write_index_table_segment(s);
1800         }
1801     }
1802
1803     ff_audio_interleave_close(s);
1804
1805     av_freep(&mxf->index_entries);
1806     av_freep(&mxf->body_partition_offset);
1807     av_freep(&mxf->timecode_track->priv_data);
1808     av_freep(&mxf->timecode_track);
1809
1810     mxf_free(s);
1811
1812     return 0;
1813 }
1814
1815 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1816 {
1817     AVPacketList *pktl;
1818     int stream_count = 0;
1819     int streams[MAX_STREAMS];
1820
1821     memset(streams, 0, sizeof(streams));
1822     pktl = s->packet_buffer;
1823     while (pktl) {
1824         //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1825         if (!streams[pktl->pkt.stream_index])
1826             stream_count++;
1827         streams[pktl->pkt.stream_index]++;
1828         pktl = pktl->next;
1829     }
1830
1831     if (stream_count && (s->nb_streams == stream_count || flush)) {
1832         pktl = s->packet_buffer;
1833         if (s->nb_streams != stream_count) {
1834             AVPacketList *first = NULL;
1835             AVPacketList *last = NULL;
1836             // find first packet in edit unit
1837             while (pktl) {
1838                 AVStream *st = s->streams[pktl->pkt.stream_index];
1839                 if (st->index == 0)
1840                     break;
1841                 else if (!first)
1842                     first = pktl;
1843                 last = pktl;
1844                 pktl = pktl->next;
1845             }
1846             if (last)
1847                 last->next = NULL;
1848             // purge packet queue
1849             while (pktl) {
1850                 AVPacketList *next = pktl->next;
1851                 av_free_packet(&pktl->pkt);
1852                 av_freep(&pktl);
1853                 pktl = next;
1854             }
1855             if (!first)
1856                 goto out;
1857             pktl = first;
1858         }
1859
1860         *out = pktl->pkt;
1861         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1862         s->packet_buffer = pktl->next;
1863         av_freep(&pktl);
1864         return 1;
1865     } else {
1866     out:
1867         av_init_packet(out);
1868         return 0;
1869     }
1870 }
1871
1872 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1873 {
1874     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1875     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1876
1877     return next->dts > pkt->dts ||
1878         (next->dts == pkt->dts && sc->order < sc2->order);
1879 }
1880
1881 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1882 {
1883     return ff_audio_rechunk_interleave(s, out, pkt, flush,
1884                                mxf_interleave_get_packet, mxf_compare_timestamps);
1885 }
1886
1887 AVOutputFormat mxf_muxer = {
1888     "mxf",
1889     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1890     NULL,
1891     "mxf",
1892     sizeof(MXFContext),
1893     CODEC_ID_PCM_S16LE,
1894     CODEC_ID_MPEG2VIDEO,
1895     mxf_write_header,
1896     mxf_write_packet,
1897     mxf_write_footer,
1898     AVFMT_NOTIMESTAMPS,
1899     NULL,
1900     mxf_interleave,
1901 };
1902
1903 AVOutputFormat mxf_d10_muxer = {
1904     "mxf_d10",
1905     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1906     "application/mxf",
1907     NULL,
1908     sizeof(MXFContext),
1909     CODEC_ID_PCM_S16LE,
1910     CODEC_ID_MPEG2VIDEO,
1911     mxf_write_header,
1912     mxf_write_d10_packet,
1913     mxf_write_footer,
1914     AVFMT_NOTIMESTAMPS,
1915     NULL,
1916     mxf_interleave,
1917 };