lavf: add AVFMT_FLAG_BITEXACT.
[libav.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 Libav.
7 *
8 * Libav 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 * Libav 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 Libav; 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 #include <inttypes.h>
34 #include <math.h>
35 #include <time.h>
36
37 #include "libavutil/random_seed.h"
38 #include "libavcodec/bytestream.h"
39 #include "audiointerleave.h"
40 #include "avformat.h"
41 #include "internal.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 extern AVOutputFormat ff_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 uint16_t temporal_ref;
62 } MXFIndexEntry;
63
64 typedef struct {
65 AudioInterleaveContext aic;
66 UID track_essence_element_key;
67 int index; ///< index in mxf_essence_container_uls table
68 const UID *codec_ul;
69 int order; ///< interleaving order if dts are equal
70 int interlaced; ///< whether picture is interlaced
71 int temporal_reordering;
72 AVRational aspect_ratio; ///< display aspect ratio
73 int closed_gop; ///< gop is closed, used in mpeg-2 frame parsing
74 } MXFStreamContext;
75
76 typedef struct {
77 UID container_ul;
78 UID element_ul;
79 UID codec_ul;
80 void (*write_desc)(AVFormatContext *, AVStream *);
81 } MXFContainerEssenceEntry;
82
83 static const struct {
84 enum AVCodecID id;
85 int index;
86 } mxf_essence_mappings[] = {
87 { AV_CODEC_ID_MPEG2VIDEO, 0 },
88 { AV_CODEC_ID_PCM_S24LE, 1 },
89 { AV_CODEC_ID_PCM_S16LE, 1 },
90 { AV_CODEC_ID_NONE }
91 };
92
93 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
94 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
95 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
96 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
97 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
98
99 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
100 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
101 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
102 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
103 mxf_write_mpegvideo_desc },
104 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
105 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
106 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
107 mxf_write_aes3_desc },
108 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
109 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
110 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
111 mxf_write_wav_desc },
112 // D-10 625/50 PAL 50mb/s
113 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
114 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
115 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
116 mxf_write_cdci_desc },
117 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
118 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
119 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
120 mxf_write_generic_sound_desc },
121 // D-10 525/60 NTSC 50mb/s
122 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
123 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
124 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
125 mxf_write_cdci_desc },
126 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
127 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
128 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
129 mxf_write_generic_sound_desc },
130 // D-10 625/50 PAL 40mb/s
131 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
132 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
133 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
134 mxf_write_cdci_desc },
135 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
136 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
137 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
138 mxf_write_generic_sound_desc },
139 // D-10 525/60 NTSC 40mb/s
140 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
141 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
142 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
143 mxf_write_cdci_desc },
144 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
145 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
146 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
147 mxf_write_generic_sound_desc },
148 // D-10 625/50 PAL 30mb/s
149 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
150 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
151 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
152 mxf_write_cdci_desc },
153 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
154 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
155 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
156 mxf_write_generic_sound_desc },
157 // D-10 525/60 NTSC 30mb/s
158 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
159 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
160 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
161 mxf_write_cdci_desc },
162 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
163 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
164 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
165 mxf_write_generic_sound_desc },
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 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
169 NULL },
170 };
171
172 typedef struct MXFContext {
173 int64_t footer_partition_offset;
174 int essence_container_count;
175 AVRational time_base;
176 int header_written;
177 MXFIndexEntry *index_entries;
178 unsigned edit_units_count;
179 uint64_t timestamp; ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
180 uint8_t slice_count; ///< index slice count minus 1 (1 if no audio, 0 otherwise)
181 int last_indexed_edit_unit;
182 uint64_t *body_partition_offset;
183 unsigned body_partitions_count;
184 int last_key_index; ///< index of last key frame
185 uint64_t duration;
186 AVStream *timecode_track;
187 int timecode_base; ///< rounded time code base (25 or 30)
188 int timecode_start; ///< frame number computed from mpeg-2 gop header timecode
189 int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
190 int edit_unit_byte_count; ///< fixed edit unit byte count
191 uint64_t body_offset;
192 uint32_t instance_number;
193 uint8_t umid[16]; ///< unique material identifier
194 } MXFContext;
195
196 static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
197 static const uint8_t umid_ul[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
198
199 /**
200 * complete key for operation pattern, partitions, and primer pack
201 */
202 static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
203 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
204 static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
205 static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
206 static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
207 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
208 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
209 static const uint8_t klv_fill_key[] = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
210 static const uint8_t body_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
211
212 /**
213 * partial key for header metadata
214 */
215 static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
216 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
217
218 /**
219 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
220 */
221 static const MXFLocalTagPair mxf_local_tag_batch[] = {
222 // preface set
223 { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
224 { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
225 { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
226 { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
227 { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
228 { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
229 { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
230 { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
231 // Identification
232 { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
233 { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
234 { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
235 { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
236 { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
237 { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
238 // Content Storage
239 { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
240 { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
241 // Essence Container Data
242 { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
243 { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
244 // Package
245 { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
246 { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
247 { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
248 { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
249 { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
250 // Track
251 { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
252 { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
253 { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
254 { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
255 { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
256 // Sequence
257 { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
258 { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
259 { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
260 // Source Clip
261 { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
262 { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
263 { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
264 // Timecode Component
265 { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
266 { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
267 { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
268 // File Descriptor
269 { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
270 { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
271 { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
272 { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
273 // Generic Picture Essence Descriptor
274 { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
275 { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
276 { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
277 { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
278 { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
279 { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
280 { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
281 { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
282 // CDCI Picture Essence Descriptor
283 { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
284 { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
285 // Generic Sound Essence Descriptor
286 { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
287 { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
288 { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
289 { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
290 { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
291 // Index Table Segment
292 { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
293 { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
294 { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
295 { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
296 { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
297 { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
298 { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
299 { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
300 // MPEG video Descriptor
301 { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
302 { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
303 // Wave Audio Essence Descriptor
304 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
305 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
306 };
307
308 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
309 {
310 avio_write(pb, uuid_base, 12);
311 avio_wb16(pb, type);
312 avio_wb16(pb, value);
313 }
314
315 static void mxf_write_umid(AVFormatContext *s, int type)
316 {
317 MXFContext *mxf = s->priv_data;
318 avio_write(s->pb, umid_ul, 13);
319 avio_wb24(s->pb, mxf->instance_number);
320 avio_write(s->pb, mxf->umid, 15);
321 avio_w8(s->pb, type);
322 }
323
324 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
325 {
326 avio_wb32(pb, ref_count);
327 avio_wb32(pb, 16);
328 }
329
330 static int klv_ber_length(uint64_t len)
331 {
332 if (len < 128)
333 return 1;
334 else
335 return (av_log2(len) >> 3) + 2;
336 }
337
338 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
339 {
340 // Determine the best BER size
341 int size;
342 if (len < 128) {
343 //short form
344 avio_w8(pb, len);
345 return 1;
346 }
347
348 size = (av_log2(len) >> 3) + 1;
349
350 // long form
351 avio_w8(pb, 0x80 + size);
352 while(size) {
353 size--;
354 avio_w8(pb, len >> 8 * size & 0xff);
355 }
356 return 0;
357 }
358
359 static void klv_encode_ber4_length(AVIOContext *pb, int len)
360 {
361 avio_w8(pb, 0x80 + 3);
362 avio_wb24(pb, len);
363 }
364
365 /*
366 * Get essence container ul index
367 */
368 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
369 {
370 int i;
371 for (i = 0; mxf_essence_mappings[i].id; i++)
372 if (mxf_essence_mappings[i].id == id)
373 return mxf_essence_mappings[i].index;
374 return -1;
375 }
376
377 static void mxf_write_primer_pack(AVFormatContext *s)
378 {
379 AVIOContext *pb = s->pb;
380 int local_tag_number, i = 0;
381
382 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
383
384 avio_write(pb, primer_pack_key, 16);
385 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
386
387 avio_wb32(pb, local_tag_number); // local_tag num
388 avio_wb32(pb, 18); // item size, always 18 according to the specs
389
390 for (i = 0; i < local_tag_number; i++) {
391 avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
392 avio_write(pb, mxf_local_tag_batch[i].uid, 16);
393 }
394 }
395
396 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
397 {
398 avio_wb16(pb, tag);
399 avio_wb16(pb, size);
400 }
401
402 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
403 {
404 avio_write(pb, header_metadata_key, 13);
405 avio_wb24(pb, value);
406 }
407
408 static void mxf_free(AVFormatContext *s)
409 {
410 int i;
411
412 for (i = 0; i < s->nb_streams; i++) {
413 AVStream *st = s->streams[i];
414 av_freep(&st->priv_data);
415 }
416 }
417
418 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
419 {
420 const MXFCodecUL *uls = ff_mxf_data_definition_uls;
421 while (uls->uid[0]) {
422 if (type == uls->id)
423 break;
424 uls++;
425 }
426 return uls;
427 }
428
429 static void mxf_write_essence_container_refs(AVFormatContext *s)
430 {
431 MXFContext *c = s->priv_data;
432 AVIOContext *pb = s->pb;
433 int i;
434
435 mxf_write_refs_count(pb, c->essence_container_count);
436 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
437 for (i = 0; i < c->essence_container_count; i++) {
438 MXFStreamContext *sc = s->streams[i]->priv_data;
439 avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
440 }
441 }
442
443 static void mxf_write_preface(AVFormatContext *s)
444 {
445 MXFContext *mxf = s->priv_data;
446 AVIOContext *pb = s->pb;
447
448 mxf_write_metadata_key(pb, 0x012f00);
449 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
450 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
451
452 // write preface set uid
453 mxf_write_local_tag(pb, 16, 0x3C0A);
454 mxf_write_uuid(pb, Preface, 0);
455 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
456
457 // last modified date
458 mxf_write_local_tag(pb, 8, 0x3B02);
459 avio_wb64(pb, mxf->timestamp);
460
461 // write version
462 mxf_write_local_tag(pb, 2, 0x3B05);
463 avio_wb16(pb, 258); // v1.2
464
465 // write identification_refs
466 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
467 mxf_write_refs_count(pb, 1);
468 mxf_write_uuid(pb, Identification, 0);
469
470 // write content_storage_refs
471 mxf_write_local_tag(pb, 16, 0x3B03);
472 mxf_write_uuid(pb, ContentStorage, 0);
473
474 // operational pattern
475 mxf_write_local_tag(pb, 16, 0x3B09);
476 avio_write(pb, op1a_ul, 16);
477
478 // write essence_container_refs
479 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
480 mxf_write_essence_container_refs(s);
481
482 // write dm_scheme_refs
483 mxf_write_local_tag(pb, 8, 0x3B0B);
484 avio_wb64(pb, 0);
485 }
486
487 /*
488 * Write a local tag containing an ascii string as utf-16
489 */
490 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
491 {
492 int i, size = strlen(value);
493 mxf_write_local_tag(pb, size*2, tag);
494 for (i = 0; i < size; i++)
495 avio_wb16(pb, value[i]);
496 }
497
498 static void mxf_write_identification(AVFormatContext *s)
499 {
500 MXFContext *mxf = s->priv_data;
501 AVIOContext *pb = s->pb;
502 const char *company = "Libav";
503 const char *product = "OP1a Muxer";
504 const char *version;
505 int length;
506
507 mxf_write_metadata_key(pb, 0x013000);
508 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
509
510 version = s->flags & AVFMT_FLAG_BITEXACT ?
511 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
512 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
513 klv_encode_ber_length(pb, length);
514
515 // write uid
516 mxf_write_local_tag(pb, 16, 0x3C0A);
517 mxf_write_uuid(pb, Identification, 0);
518 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
519
520 // write generation uid
521 mxf_write_local_tag(pb, 16, 0x3C09);
522 mxf_write_uuid(pb, Identification, 1);
523
524 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
525 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
526 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
527
528 // write product uid
529 mxf_write_local_tag(pb, 16, 0x3C05);
530 mxf_write_uuid(pb, Identification, 2);
531
532 // modification date
533 mxf_write_local_tag(pb, 8, 0x3C06);
534 avio_wb64(pb, mxf->timestamp);
535 }
536
537 static void mxf_write_content_storage(AVFormatContext *s)
538 {
539 AVIOContext *pb = s->pb;
540
541 mxf_write_metadata_key(pb, 0x011800);
542 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
543 klv_encode_ber_length(pb, 92);
544
545 // write uid
546 mxf_write_local_tag(pb, 16, 0x3C0A);
547 mxf_write_uuid(pb, ContentStorage, 0);
548 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
549
550 // write package reference
551 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
552 mxf_write_refs_count(pb, 2);
553 mxf_write_uuid(pb, MaterialPackage, 0);
554 mxf_write_uuid(pb, SourcePackage, 0);
555
556 // write essence container data
557 mxf_write_local_tag(pb, 8 + 16, 0x1902);
558 mxf_write_refs_count(pb, 1);
559 mxf_write_uuid(pb, EssenceContainerData, 0);
560 }
561
562 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
563 {
564 MXFContext *mxf = s->priv_data;
565 AVIOContext *pb = s->pb;
566 MXFStreamContext *sc = st->priv_data;
567
568 mxf_write_metadata_key(pb, 0x013b00);
569 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
570 klv_encode_ber_length(pb, 80);
571
572 // write track uid
573 mxf_write_local_tag(pb, 16, 0x3C0A);
574 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
575 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
576
577 // write track id
578 mxf_write_local_tag(pb, 4, 0x4801);
579 avio_wb32(pb, st->index+2);
580
581 // write track number
582 mxf_write_local_tag(pb, 4, 0x4804);
583 if (type == MaterialPackage)
584 avio_wb32(pb, 0); // track number of material package is 0
585 else
586 avio_write(pb, sc->track_essence_element_key + 12, 4);
587
588 mxf_write_local_tag(pb, 8, 0x4B01);
589 avio_wb32(pb, mxf->time_base.den);
590 avio_wb32(pb, mxf->time_base.num);
591
592 // write origin
593 mxf_write_local_tag(pb, 8, 0x4B02);
594 avio_wb64(pb, 0);
595
596 // write sequence refs
597 mxf_write_local_tag(pb, 16, 0x4803);
598 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
599 }
600
601 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 };
602
603 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
604 {
605 MXFContext *mxf = s->priv_data;
606 AVIOContext *pb = s->pb;
607
608 // find data define uls
609 mxf_write_local_tag(pb, 16, 0x0201);
610 if (st == mxf->timecode_track)
611 avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
612 else {
613 const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
614 avio_write(pb, data_def_ul->uid, 16);
615 }
616
617 // write duration
618 mxf_write_local_tag(pb, 8, 0x0202);
619 avio_wb64(pb, mxf->duration);
620 }
621
622 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
623 {
624 MXFContext *mxf = s->priv_data;
625 AVIOContext *pb = s->pb;
626 enum MXFMetadataSetType component;
627
628 mxf_write_metadata_key(pb, 0x010f00);
629 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
630 klv_encode_ber_length(pb, 80);
631
632 mxf_write_local_tag(pb, 16, 0x3C0A);
633 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
634
635 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
636 mxf_write_common_fields(s, st);
637
638 // write structural component
639 mxf_write_local_tag(pb, 16 + 8, 0x1001);
640 mxf_write_refs_count(pb, 1);
641 if (st == mxf->timecode_track)
642 component = TimecodeComponent;
643 else
644 component = SourceClip;
645 if (type == SourcePackage)
646 component += TypeBottom;
647 mxf_write_uuid(pb, component, st->index);
648 }
649
650 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
651 {
652 MXFContext *mxf = s->priv_data;
653 AVIOContext *pb = s->pb;
654
655 mxf_write_metadata_key(pb, 0x011400);
656 klv_encode_ber_length(pb, 75);
657
658 // UID
659 mxf_write_local_tag(pb, 16, 0x3C0A);
660 mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
661 TimecodeComponent + TypeBottom, st->index);
662
663 mxf_write_common_fields(s, st);
664
665 // Start Time Code
666 mxf_write_local_tag(pb, 8, 0x1501);
667 avio_wb64(pb, mxf->timecode_start);
668
669 // Rounded Time Code Base
670 mxf_write_local_tag(pb, 2, 0x1502);
671 avio_wb16(pb, mxf->timecode_base);
672
673 // Drop Frame
674 mxf_write_local_tag(pb, 1, 0x1503);
675 avio_w8(pb, mxf->timecode_drop_frame);
676 }
677
678 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
679 {
680 AVIOContext *pb = s->pb;
681 int i;
682
683 mxf_write_metadata_key(pb, 0x011100);
684 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
685 klv_encode_ber_length(pb, 108);
686
687 // write uid
688 mxf_write_local_tag(pb, 16, 0x3C0A);
689 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
690
691 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
692 mxf_write_common_fields(s, st);
693
694 // write start_position
695 mxf_write_local_tag(pb, 8, 0x1201);
696 avio_wb64(pb, 0);
697
698 // write source package uid, end of the reference
699 mxf_write_local_tag(pb, 32, 0x1101);
700 if (type == SourcePackage) {
701 for (i = 0; i < 4; i++)
702 avio_wb64(pb, 0);
703 } else
704 mxf_write_umid(s, 1);
705
706 // write source track id
707 mxf_write_local_tag(pb, 4, 0x1102);
708 if (type == SourcePackage)
709 avio_wb32(pb, 0);
710 else
711 avio_wb32(pb, st->index+2);
712 }
713
714 static void mxf_write_multi_descriptor(AVFormatContext *s)
715 {
716 MXFContext *mxf = s->priv_data;
717 AVIOContext *pb = s->pb;
718 const uint8_t *ul;
719 int i;
720
721 mxf_write_metadata_key(pb, 0x014400);
722 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
723 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
724
725 mxf_write_local_tag(pb, 16, 0x3C0A);
726 mxf_write_uuid(pb, MultipleDescriptor, 0);
727 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
728
729 // write sample rate
730 mxf_write_local_tag(pb, 8, 0x3001);
731 avio_wb32(pb, mxf->time_base.den);
732 avio_wb32(pb, mxf->time_base.num);
733
734 // write essence container ul
735 mxf_write_local_tag(pb, 16, 0x3004);
736 if (mxf->essence_container_count > 1)
737 ul = multiple_desc_ul;
738 else {
739 MXFStreamContext *sc = s->streams[0]->priv_data;
740 ul = mxf_essence_container_uls[sc->index].container_ul;
741 }
742 avio_write(pb, ul, 16);
743
744 // write sub descriptor refs
745 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
746 mxf_write_refs_count(pb, s->nb_streams);
747 for (i = 0; i < s->nb_streams; i++)
748 mxf_write_uuid(pb, SubDescriptor, i);
749 }
750
751 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
752 {
753 MXFContext *mxf = s->priv_data;
754 MXFStreamContext *sc = st->priv_data;
755 AVIOContext *pb = s->pb;
756
757 avio_write(pb, key, 16);
758 klv_encode_ber4_length(pb, size+20+8+12+20);
759
760 mxf_write_local_tag(pb, 16, 0x3C0A);
761 mxf_write_uuid(pb, SubDescriptor, st->index);
762
763 mxf_write_local_tag(pb, 4, 0x3006);
764 avio_wb32(pb, st->index+2);
765
766 mxf_write_local_tag(pb, 8, 0x3001);
767 avio_wb32(pb, mxf->time_base.den);
768 avio_wb32(pb, mxf->time_base.num);
769
770 mxf_write_local_tag(pb, 16, 0x3004);
771 avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
772 }
773
774 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
775 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
776 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
777 static const UID mxf_cdci_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
778 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
779
780 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
781 {
782 MXFStreamContext *sc = st->priv_data;
783 AVIOContext *pb = s->pb;
784 int stored_height = (st->codec->height+15)/16*16;
785 int display_height;
786 int f1, f2;
787
788 mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
789
790 mxf_write_local_tag(pb, 4, 0x3203);
791 avio_wb32(pb, st->codec->width);
792
793 mxf_write_local_tag(pb, 4, 0x3202);
794 avio_wb32(pb, stored_height>>sc->interlaced);
795
796 mxf_write_local_tag(pb, 4, 0x3209);
797 avio_wb32(pb, st->codec->width);
798
799 if (st->codec->height == 608) // PAL + VBI
800 display_height = 576;
801 else if (st->codec->height == 512) // NTSC + VBI
802 display_height = 486;
803 else
804 display_height = st->codec->height;
805
806 mxf_write_local_tag(pb, 4, 0x3208);
807 avio_wb32(pb, display_height>>sc->interlaced);
808
809 // component depth
810 mxf_write_local_tag(pb, 4, 0x3301);
811 avio_wb32(pb, 8);
812
813 // horizontal subsampling
814 mxf_write_local_tag(pb, 4, 0x3302);
815 avio_wb32(pb, 2);
816
817 // frame layout
818 mxf_write_local_tag(pb, 1, 0x320C);
819 avio_w8(pb, sc->interlaced);
820
821 // video line map
822 switch (st->codec->height) {
823 case 576: f1 = 23; f2 = 336; break;
824 case 608: f1 = 7; f2 = 320; break;
825 case 480: f1 = 20; f2 = 283; break;
826 case 512: f1 = 7; f2 = 270; break;
827 case 720: f1 = 26; f2 = 0; break; // progressive
828 case 1080: f1 = 21; f2 = 584; break;
829 default: f1 = 0; f2 = 0; break;
830 }
831
832 if (!sc->interlaced) {
833 f2 = 0;
834 f1 *= 2;
835 }
836
837 mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
838 avio_wb32(pb, sc->interlaced ? 2 : 1);
839 avio_wb32(pb, 4);
840 avio_wb32(pb, f1);
841 if (sc->interlaced)
842 avio_wb32(pb, f2);
843
844 mxf_write_local_tag(pb, 8, 0x320E);
845 avio_wb32(pb, sc->aspect_ratio.num);
846 avio_wb32(pb, sc->aspect_ratio.den);
847
848 mxf_write_local_tag(pb, 16, 0x3201);
849 avio_write(pb, *sc->codec_ul, 16);
850 }
851
852 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
853 {
854 mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
855 }
856
857 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
858 {
859 AVIOContext *pb = s->pb;
860 int profile_and_level = (st->codec->profile<<4) | st->codec->level;
861
862 mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
863
864 // bit rate
865 mxf_write_local_tag(pb, 4, 0x8000);
866 avio_wb32(pb, st->codec->bit_rate);
867
868 // profile and level
869 mxf_write_local_tag(pb, 1, 0x8007);
870 if (!st->codec->profile)
871 profile_and_level |= 0x80; // escape bit
872 avio_w8(pb, profile_and_level);
873 }
874
875 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
876 {
877 AVIOContext *pb = s->pb;
878
879 mxf_write_generic_desc(s, st, key, size+5+12+8+8);
880
881 // audio locked
882 mxf_write_local_tag(pb, 1, 0x3D02);
883 avio_w8(pb, 1);
884
885 // write audio sampling rate
886 mxf_write_local_tag(pb, 8, 0x3D03);
887 avio_wb32(pb, st->codec->sample_rate);
888 avio_wb32(pb, 1);
889
890 mxf_write_local_tag(pb, 4, 0x3D07);
891 avio_wb32(pb, st->codec->channels);
892
893 mxf_write_local_tag(pb, 4, 0x3D01);
894 avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
895 }
896
897 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
898 {
899 AVIOContext *pb = s->pb;
900
901 mxf_write_generic_sound_common(s, st, key, size+6+8);
902
903 mxf_write_local_tag(pb, 2, 0x3D0A);
904 avio_wb16(pb, st->codec->block_align);
905
906 // avg bytes per sec
907 mxf_write_local_tag(pb, 4, 0x3D09);
908 avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
909 }
910
911 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
912 {
913 mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
914 }
915
916 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
917 {
918 mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
919 }
920
921 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
922 {
923 mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
924 }
925
926 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
927 {
928 MXFContext *mxf = s->priv_data;
929 AVIOContext *pb = s->pb;
930 int i, track_count = s->nb_streams+1;
931
932 if (type == MaterialPackage) {
933 mxf_write_metadata_key(pb, 0x013600);
934 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
935 klv_encode_ber_length(pb, 92 + 16*track_count);
936 } else {
937 mxf_write_metadata_key(pb, 0x013700);
938 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
939 klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
940 }
941
942 // write uid
943 mxf_write_local_tag(pb, 16, 0x3C0A);
944 mxf_write_uuid(pb, type, 0);
945 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
946 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
947
948 // write package umid
949 mxf_write_local_tag(pb, 32, 0x4401);
950 mxf_write_umid(s, type == SourcePackage);
951 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
952
953 // package creation date
954 mxf_write_local_tag(pb, 8, 0x4405);
955 avio_wb64(pb, mxf->timestamp);
956
957 // package modified date
958 mxf_write_local_tag(pb, 8, 0x4404);
959 avio_wb64(pb, mxf->timestamp);
960
961 // write track refs
962 mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
963 mxf_write_refs_count(pb, track_count);
964 mxf_write_uuid(pb, type == MaterialPackage ? Track :
965 Track + TypeBottom, -1); // timecode track
966 for (i = 0; i < s->nb_streams; i++)
967 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
968
969 // write multiple descriptor reference
970 if (type == SourcePackage) {
971 mxf_write_local_tag(pb, 16, 0x4701);
972 if (s->nb_streams > 1) {
973 mxf_write_uuid(pb, MultipleDescriptor, 0);
974 mxf_write_multi_descriptor(s);
975 } else
976 mxf_write_uuid(pb, SubDescriptor, 0);
977 }
978
979 // write timecode track
980 mxf_write_track(s, mxf->timecode_track, type);
981 mxf_write_sequence(s, mxf->timecode_track, type);
982 mxf_write_timecode_component(s, mxf->timecode_track, type);
983
984 for (i = 0; i < s->nb_streams; i++) {
985 AVStream *st = s->streams[i];
986 mxf_write_track(s, st, type);
987 mxf_write_sequence(s, st, type);
988 mxf_write_structural_component(s, st, type);
989
990 if (type == SourcePackage) {
991 MXFStreamContext *sc = st->priv_data;
992 mxf_essence_container_uls[sc->index].write_desc(s, st);
993 }
994 }
995 }
996
997 static int mxf_write_essence_container_data(AVFormatContext *s)
998 {
999 AVIOContext *pb = s->pb;
1000
1001 mxf_write_metadata_key(pb, 0x012300);
1002 klv_encode_ber_length(pb, 72);
1003
1004 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1005 mxf_write_uuid(pb, EssenceContainerData, 0);
1006
1007 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1008 mxf_write_umid(s, 1);
1009
1010 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1011 avio_wb32(pb, 1);
1012
1013 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1014 avio_wb32(pb, 2);
1015
1016 return 0;
1017 }
1018
1019 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1020 {
1021 mxf_write_preface(s);
1022 mxf_write_identification(s);
1023 mxf_write_content_storage(s);
1024 mxf_write_package(s, MaterialPackage);
1025 mxf_write_package(s, SourcePackage);
1026 mxf_write_essence_container_data(s);
1027 return 0;
1028 }
1029
1030 static unsigned klv_fill_size(uint64_t size)
1031 {
1032 unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1033 if (pad < 20) // smallest fill item possible
1034 return pad + KAG_SIZE;
1035 else
1036 return pad & (KAG_SIZE-1);
1037 }
1038
1039 static void mxf_write_index_table_segment(AVFormatContext *s)
1040 {
1041 MXFContext *mxf = s->priv_data;
1042 AVIOContext *pb = s->pb;
1043 int i, j, 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 avio_write(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 avio_wb32(pb, mxf->time_base.den);
1067 avio_wb32(pb, mxf->time_base.num);
1068
1069 // index start position
1070 mxf_write_local_tag(pb, 8, 0x3F0C);
1071 avio_wb64(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 avio_wb64(pb, 0); // index table covers whole container
1077 else
1078 avio_wb64(pb, mxf->edit_units_count);
1079
1080 // edit unit byte count
1081 mxf_write_local_tag(pb, 4, 0x3F05);
1082 avio_wb32(pb, mxf->edit_unit_byte_count);
1083
1084 // index sid
1085 mxf_write_local_tag(pb, 4, 0x3F06);
1086 avio_wb32(pb, 2);
1087
1088 // body sid
1089 mxf_write_local_tag(pb, 4, 0x3F07);
1090 avio_wb32(pb, 1);
1091
1092 if (!mxf->edit_unit_byte_count) {
1093 // real slice count - 1
1094 mxf_write_local_tag(pb, 1, 0x3F08);
1095 avio_w8(pb, mxf->slice_count);
1096
1097 // delta entry array
1098 mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1099 avio_wb32(pb, s->nb_streams+1); // num of entries
1100 avio_wb32(pb, 6); // size of one entry
1101 // write system item delta entry
1102 avio_w8(pb, 0);
1103 avio_w8(pb, 0); // slice entry
1104 avio_wb32(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 avio_w8(pb, sc->temporal_reordering);
1109 if (sc->temporal_reordering)
1110 temporal_reordering = 1;
1111 if (i == 0) { // video track
1112 avio_w8(pb, 0); // slice number
1113 avio_wb32(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 avio_w8(pb, 1);
1118 avio_wb32(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 avio_wb32(pb, mxf->edit_units_count); // num of entries
1124 avio_wb32(pb, 11+mxf->slice_count*4); // size of one entry
1125
1126 for (i = 0; i < mxf->edit_units_count; i++) {
1127 int temporal_offset = 0;
1128
1129 if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1130 mxf->last_key_index = key_index;
1131 key_index = i;
1132 }
1133
1134 if (temporal_reordering) {
1135 int pic_num_in_gop = i - key_index;
1136 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1137 for (j = key_index; j < mxf->edit_units_count; j++) {
1138 if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1139 break;
1140 }
1141 if (j == mxf->edit_units_count)
1142 av_log(s, AV_LOG_WARNING, "missing frames\n");
1143 temporal_offset = j - key_index - pic_num_in_gop;
1144 }
1145 }
1146 avio_w8(pb, temporal_offset);
1147
1148 if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1149 avio_w8(pb, mxf->last_key_index - i);
1150 } else {
1151 avio_w8(pb, key_index - i); // key frame offset
1152 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1153 mxf->last_key_index = key_index;
1154 }
1155
1156 if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1157 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1158 mxf->index_entries[i].flags |= 0x80; // random access
1159 avio_w8(pb, mxf->index_entries[i].flags);
1160 // stream offset
1161 avio_wb64(pb, mxf->index_entries[i].offset);
1162 if (s->nb_streams > 1)
1163 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1164 }
1165
1166 mxf->last_key_index = key_index - mxf->edit_units_count;
1167 mxf->last_indexed_edit_unit += mxf->edit_units_count;
1168 mxf->edit_units_count = 0;
1169 }
1170 }
1171
1172 static void mxf_write_klv_fill(AVFormatContext *s)
1173 {
1174 unsigned pad = klv_fill_size(avio_tell(s->pb));
1175 if (pad) {
1176 avio_write(s->pb, klv_fill_key, 16);
1177 pad -= 16 + 4;
1178 klv_encode_ber4_length(s->pb, pad);
1179 for (; pad; pad--)
1180 avio_w8(s->pb, 0);
1181 assert(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1182 }
1183 }
1184
1185 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1186 int indexsid,
1187 const uint8_t *key, int write_metadata)
1188 {
1189 MXFContext *mxf = s->priv_data;
1190 AVIOContext *pb = s->pb;
1191 int64_t header_byte_count_offset;
1192 unsigned index_byte_count = 0;
1193 uint64_t partition_offset = avio_tell(pb);
1194 int err;
1195
1196 if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1197 index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1198 12+mxf->edit_units_count*(11+mxf->slice_count*4);
1199 else if (mxf->edit_unit_byte_count && indexsid)
1200 index_byte_count = 80;
1201
1202 if (index_byte_count) {
1203 // add encoded ber length
1204 index_byte_count += 16 + klv_ber_length(index_byte_count);
1205 index_byte_count += klv_fill_size(index_byte_count);
1206 }
1207
1208 if (!memcmp(key, body_partition_key, 16)) {
1209 if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1210 sizeof(*mxf->body_partition_offset))) < 0) {
1211 mxf->body_partitions_count = 0;
1212 return err;
1213 }
1214 mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1215 }
1216
1217 // write klv
1218 avio_write(pb, key, 16);
1219 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1220
1221 // write partition value
1222 avio_wb16(pb, 1); // majorVersion
1223 avio_wb16(pb, 2); // minorVersion
1224 avio_wb32(pb, KAG_SIZE); // KAGSize
1225
1226 avio_wb64(pb, partition_offset); // ThisPartition
1227
1228 if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1229 avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1230 else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1231 avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1232 else
1233 avio_wb64(pb, 0);
1234
1235 avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1236
1237 // set offset
1238 header_byte_count_offset = avio_tell(pb);
1239 avio_wb64(pb, 0); // headerByteCount, update later
1240
1241 // indexTable
1242 avio_wb64(pb, index_byte_count); // indexByteCount
1243 avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1244
1245 // BodyOffset
1246 if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1247 avio_wb64(pb, mxf->body_offset);
1248 } else
1249 avio_wb64(pb, 0);
1250
1251 avio_wb32(pb, bodysid); // bodySID
1252
1253 // operational pattern
1254 avio_write(pb, op1a_ul, 16);
1255
1256 // essence container
1257 mxf_write_essence_container_refs(s);
1258
1259 if (write_metadata) {
1260 // mark the start of the headermetadata and calculate metadata size
1261 int64_t pos, start;
1262 unsigned header_byte_count;
1263
1264 mxf_write_klv_fill(s);
1265 start = avio_tell(s->pb);
1266 mxf_write_primer_pack(s);
1267 mxf_write_header_metadata_sets(s);
1268 pos = avio_tell(s->pb);
1269 header_byte_count = pos - start + klv_fill_size(pos);
1270
1271 // update header_byte_count
1272 avio_seek(pb, header_byte_count_offset, SEEK_SET);
1273 avio_wb64(pb, header_byte_count);
1274 avio_seek(pb, pos, SEEK_SET);
1275 }
1276
1277 avio_flush(pb);
1278
1279 return 0;
1280 }
1281
1282 static const UID mxf_mpeg2_codec_uls[] = {
1283 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1284 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1285 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1286 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1287 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1288 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1289 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1290 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1291 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1292 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1293 };
1294
1295 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1296 {
1297 int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1298
1299 if (avctx->profile == 4) { // Main
1300 if (avctx->level == 8) // Main
1301 return &mxf_mpeg2_codec_uls[0+long_gop];
1302 else if (avctx->level == 4) // High
1303 return &mxf_mpeg2_codec_uls[4+long_gop];
1304 else if (avctx->level == 6) // High 14
1305 return &mxf_mpeg2_codec_uls[8+long_gop];
1306 } else if (avctx->profile == 0) { // 422
1307 if (avctx->level == 5) // Main
1308 return &mxf_mpeg2_codec_uls[2+long_gop];
1309 else if (avctx->level == 2) // High
1310 return &mxf_mpeg2_codec_uls[6+long_gop];
1311 }
1312 return NULL;
1313 }
1314
1315 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1316 AVPacket *pkt, MXFIndexEntry *e)
1317 {
1318 MXFStreamContext *sc = st->priv_data;
1319 MXFContext *mxf = s->priv_data;
1320 uint32_t c = -1;
1321 int i;
1322
1323 for(i = 0; i < pkt->size - 4; i++) {
1324 c = (c<<8) + pkt->data[i];
1325 if (c == 0x1b5) {
1326 if ((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 (pkt->data[i+4]>>6 & 0x01) { // closed
1335 sc->closed_gop = 1;
1336 if (e->flags & 0x40) // sequence header present
1337 e->flags |= 0x80; // random access
1338 }
1339 if (!mxf->header_written) {
1340 unsigned hours = (pkt->data[i+1]>>2) & 0x1f;
1341 unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1342 unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1343 unsigned frames = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1344 mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1345 mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1346 mxf->timecode_base + frames;
1347 if (mxf->timecode_drop_frame) {
1348 unsigned tminutes = 60 * hours + minutes;
1349 mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1350 }
1351 av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1352 hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1353 }
1354 } else if (c == 0x1b3) { // seq
1355 e->flags |= 0x40;
1356 switch ((pkt->data[i+4]>>4) & 0xf) {
1357 case 2: sc->aspect_ratio = (AVRational){ 4, 3}; break;
1358 case 3: sc->aspect_ratio = (AVRational){ 16, 9}; break;
1359 case 4: sc->aspect_ratio = (AVRational){221,100}; break;
1360 default:
1361 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1362 st->codec->width, st->codec->height, 1024*1024);
1363 }
1364 } else if (c == 0x100) { // pic
1365 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1366 e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1367 if (pict_type == 2) { // P frame
1368 e->flags |= 0x22;
1369 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1370 } else if (pict_type == 3) { // B frame
1371 if (sc->closed_gop)
1372 e->flags |= 0x13; // only backward prediction
1373 else
1374 e->flags |= 0x33;
1375 sc->temporal_reordering = -1;
1376 } else if (!pict_type) {
1377 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1378 return 0;
1379 }
1380 }
1381 }
1382 if (s->oformat != &ff_mxf_d10_muxer)
1383 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1384 return !!sc->codec_ul;
1385 }
1386
1387 static uint64_t mxf_parse_timestamp(time_t timestamp)
1388 {
1389 struct tm *time = gmtime(&timestamp);
1390 if (!time)
1391 return 0;
1392 return (uint64_t)(time->tm_year+1900) << 48 |
1393 (uint64_t)(time->tm_mon+1) << 40 |
1394 (uint64_t) time->tm_mday << 32 |
1395 time->tm_hour << 24 |
1396 time->tm_min << 16 |
1397 time->tm_sec << 8;
1398 }
1399
1400 static void mxf_gen_umid(AVFormatContext *s)
1401 {
1402 MXFContext *mxf = s->priv_data;
1403 uint32_t seed = av_get_random_seed();
1404 uint64_t umid = seed + 0x5294713400000000LL;
1405
1406 AV_WB64(mxf->umid , umid);
1407 AV_WB64(mxf->umid+8, umid>>8);
1408
1409 mxf->instance_number = seed;
1410 }
1411
1412 static int mxf_write_header(AVFormatContext *s)
1413 {
1414 MXFContext *mxf = s->priv_data;
1415 int i;
1416 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1417 const int *samples_per_frame = NULL;
1418 AVDictionaryEntry *t;
1419 int64_t timestamp = 0;
1420
1421 if (!s->nb_streams)
1422 return -1;
1423
1424 for (i = 0; i < s->nb_streams; i++) {
1425 AVStream *st = s->streams[i];
1426 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1427 if (!sc)
1428 return AVERROR(ENOMEM);
1429 st->priv_data = sc;
1430
1431 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1432 if (i != 0) {
1433 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1434 return -1;
1435 }
1436 if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1437 samples_per_frame = PAL_samples_per_frame;
1438 mxf->time_base = (AVRational){ 1, 25 };
1439 mxf->timecode_base = 25;
1440 } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1441 samples_per_frame = NTSC_samples_per_frame;
1442 mxf->time_base = (AVRational){ 1001, 30000 };
1443 mxf->timecode_base = 30;
1444 } else {
1445 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1446 return -1;
1447 }
1448 avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1449 if (s->oformat == &ff_mxf_d10_muxer) {
1450 if (st->codec->bit_rate == 50000000)
1451 if (mxf->time_base.den == 25) sc->index = 3;
1452 else sc->index = 5;
1453 else if (st->codec->bit_rate == 40000000)
1454 if (mxf->time_base.den == 25) sc->index = 7;
1455 else sc->index = 9;
1456 else if (st->codec->bit_rate == 30000000)
1457 if (mxf->time_base.den == 25) sc->index = 11;
1458 else sc->index = 13;
1459 else {
1460 av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1461 return -1;
1462 }
1463
1464 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1465 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1466 mxf->time_base.num / (8*mxf->time_base.den);
1467 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1468 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1469 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1470 }
1471 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1472 if (st->codec->sample_rate != 48000) {
1473 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1474 return -1;
1475 }
1476 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
1477 if (s->oformat == &ff_mxf_d10_muxer) {
1478 if (st->index != 1) {
1479 av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1480 return -1;
1481 }
1482 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
1483 st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
1484 av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1485 }
1486 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1487 } else
1488 mxf->slice_count = 1;
1489 }
1490
1491 if (!sc->index) {
1492 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1493 if (sc->index == -1) {
1494 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1495 "codec not currently supported in container\n", i);
1496 return -1;
1497 }
1498 }
1499
1500 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1501
1502 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1503 sc->track_essence_element_key[15] = present[sc->index];
1504 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1505
1506 if (!present[sc->index])
1507 mxf->essence_container_count++;
1508 present[sc->index]++;
1509 }
1510
1511 if (s->oformat == &ff_mxf_d10_muxer) {
1512 mxf->essence_container_count = 1;
1513 }
1514
1515 if (!(s->flags & AVFMT_FLAG_BITEXACT))
1516 mxf_gen_umid(s);
1517
1518 for (i = 0; i < s->nb_streams; i++) {
1519 MXFStreamContext *sc = s->streams[i]->priv_data;
1520 // update element count
1521 sc->track_essence_element_key[13] = present[sc->index];
1522 sc->order = AV_RB32(sc->track_essence_element_key+12);
1523 }
1524
1525 if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
1526 timestamp = ff_iso8601_to_unix_time(t->value);
1527 if (timestamp)
1528 mxf->timestamp = mxf_parse_timestamp(timestamp);
1529 mxf->duration = -1;
1530
1531 mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1532 if (!mxf->timecode_track)
1533 return AVERROR(ENOMEM);
1534 mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1535 if (!mxf->timecode_track->priv_data)
1536 return AVERROR(ENOMEM);
1537 mxf->timecode_track->index = -1;
1538
1539 if (!samples_per_frame)
1540 samples_per_frame = PAL_samples_per_frame;
1541
1542 if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1543 return -1;
1544
1545 return 0;
1546 }
1547
1548 static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1549 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 };
1550
1551 static uint32_t framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1552 {
1553 return (0 << 31) | // color frame flag
1554 (drop << 30) | // drop frame flag
1555 ( ((frame % fps) / 10) << 28) | // tens of frames
1556 ( ((frame % fps) % 10) << 24) | // units of frames
1557 (0 << 23) | // field phase (NTSC), b0 (PAL)
1558 ((((frame / fps) % 60) / 10) << 20) | // tens of seconds
1559 ((((frame / fps) % 60) % 10) << 16) | // units of seconds
1560 (0 << 15) | // b0 (NTSC), b2 (PAL)
1561 ((((frame / (fps * 60)) % 60) / 10) << 12) | // tens of minutes
1562 ((((frame / (fps * 60)) % 60) % 10) << 8) | // units of minutes
1563 (0 << 7) | // b1
1564 (0 << 6) | // b2 (NTSC), field phase (PAL)
1565 ((((frame / (fps * 3600) % 24)) / 10) << 4) | // tens of hours
1566 ( (frame / (fps * 3600) % 24)) % 10; // units of hours
1567 }
1568
1569 static void mxf_write_system_item(AVFormatContext *s)
1570 {
1571 MXFContext *mxf = s->priv_data;
1572 AVIOContext *pb = s->pb;
1573 unsigned frame;
1574 uint32_t time_code;
1575
1576 frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1577
1578 // write system metadata pack
1579 avio_write(pb, system_metadata_pack_key, 16);
1580 klv_encode_ber4_length(pb, 57);
1581 avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1582 avio_w8(pb, 0x04); // content package rate
1583 avio_w8(pb, 0x00); // content package type
1584 avio_wb16(pb, 0x00); // channel handle
1585 avio_wb16(pb, frame); // continuity count
1586 if (mxf->essence_container_count > 1)
1587 avio_write(pb, multiple_desc_ul, 16);
1588 else {
1589 MXFStreamContext *sc = s->streams[0]->priv_data;
1590 avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1591 }
1592 avio_w8(pb, 0);
1593 avio_wb64(pb, 0);
1594 avio_wb64(pb, 0); // creation date/time stamp
1595
1596 avio_w8(pb, 0x81); // SMPTE 12M time code
1597 time_code = framenum_to_12m_time_code(frame, mxf->timecode_drop_frame,
1598 mxf->timecode_base);
1599 avio_wb32(pb, time_code);
1600 avio_wb32(pb, 0); // binary group data
1601 avio_wb64(pb, 0);
1602
1603 // write system metadata package set
1604 avio_write(pb, system_metadata_package_set_key, 16);
1605 klv_encode_ber4_length(pb, 35);
1606 avio_w8(pb, 0x83); // UMID
1607 avio_wb16(pb, 0x20);
1608 mxf_write_umid(s, 1);
1609 }
1610
1611 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1612 {
1613 MXFContext *mxf = s->priv_data;
1614 AVIOContext *pb = s->pb;
1615 int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1616 (8*mxf->time_base.den); // frame size
1617 int pad;
1618
1619 packet_size += 16 + 4;
1620 packet_size += klv_fill_size(packet_size);
1621
1622 klv_encode_ber4_length(pb, pkt->size);
1623 avio_write(pb, pkt->data, pkt->size);
1624
1625 // ensure CBR muxing by padding to correct video frame size
1626 pad = packet_size - pkt->size - 16 - 4;
1627 if (pad > 20) {
1628 avio_write(s->pb, klv_fill_key, 16);
1629 pad -= 16 + 4;
1630 klv_encode_ber4_length(s->pb, pad);
1631 for (; pad; pad--)
1632 avio_w8(s->pb, 0);
1633 assert(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1634 } else {
1635 av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1636 for (; pad > 0; pad--)
1637 avio_w8(s->pb, 0);
1638 }
1639 }
1640
1641 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1642 {
1643 MXFContext *mxf = s->priv_data;
1644 AVIOContext *pb = s->pb;
1645 int frame_size = pkt->size / st->codec->block_align;
1646 uint8_t *samples = pkt->data;
1647 uint8_t *end = pkt->data + pkt->size;
1648 int i;
1649
1650 klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1651
1652 avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1653 avio_wl16(pb, frame_size);
1654 avio_w8(pb, (1<<st->codec->channels)-1);
1655
1656 while (samples < end) {
1657 for (i = 0; i < st->codec->channels; i++) {
1658 uint32_t sample;
1659 if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
1660 sample = AV_RL24(samples)<< 4;
1661 samples += 3;
1662 } else {
1663 sample = AV_RL16(samples)<<12;
1664 samples += 2;
1665 }
1666 avio_wl32(pb, sample | i);
1667 }
1668 for (; i < 8; i++)
1669 avio_wl32(pb, i);
1670 }
1671 }
1672
1673 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1674 {
1675 MXFContext *mxf = s->priv_data;
1676 AVIOContext *pb = s->pb;
1677 AVStream *st = s->streams[pkt->stream_index];
1678 MXFStreamContext *sc = st->priv_data;
1679 MXFIndexEntry ie = {0};
1680 int err;
1681
1682 if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1683 if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
1684 + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
1685 mxf->edit_units_count = 0;
1686 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1687 return err;
1688 }
1689 }
1690
1691 if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1692 if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
1693 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1694 return -1;
1695 }
1696 }
1697
1698 if (!mxf->header_written) {
1699 if (mxf->edit_unit_byte_count) {
1700 if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
1701 return err;
1702 mxf_write_klv_fill(s);
1703 mxf_write_index_table_segment(s);
1704 } else {
1705 if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
1706 return err;
1707 }
1708 mxf->header_written = 1;
1709 }
1710
1711 if (st->index == 0) {
1712 if (!mxf->edit_unit_byte_count &&
1713 (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1714 !(ie.flags & 0x33)) { // I frame, Gop start
1715 mxf_write_klv_fill(s);
1716 if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
1717 return err;
1718 mxf_write_klv_fill(s);
1719 mxf_write_index_table_segment(s);
1720 }
1721
1722 mxf_write_klv_fill(s);
1723 mxf_write_system_item(s);
1724
1725 if (!mxf->edit_unit_byte_count) {
1726 mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1727 mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
1728 mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
1729 mxf->body_offset += KAG_SIZE; // size of system element
1730 }
1731 mxf->edit_units_count++;
1732 } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1733 mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1734 mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1735 }
1736
1737 mxf_write_klv_fill(s);
1738 avio_write(pb, sc->track_essence_element_key, 16); // write key
1739 if (s->oformat == &ff_mxf_d10_muxer) {
1740 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1741 mxf_write_d10_video_packet(s, st, pkt);
1742 else
1743 mxf_write_d10_audio_packet(s, st, pkt);
1744 } else {
1745 klv_encode_ber4_length(pb, pkt->size); // write length
1746 avio_write(pb, pkt->data, pkt->size);
1747 mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1748 }
1749
1750 avio_flush(pb);
1751
1752 return 0;
1753 }
1754
1755 static void mxf_write_random_index_pack(AVFormatContext *s)
1756 {
1757 MXFContext *mxf = s->priv_data;
1758 AVIOContext *pb = s->pb;
1759 uint64_t pos = avio_tell(pb);
1760 int i;
1761
1762 avio_write(pb, random_index_pack_key, 16);
1763 klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1764
1765 if (mxf->edit_unit_byte_count)
1766 avio_wb32(pb, 1); // BodySID of header partition
1767 else
1768 avio_wb32(pb, 0);
1769 avio_wb64(pb, 0); // offset of header partition
1770
1771 for (i = 0; i < mxf->body_partitions_count; i++) {
1772 avio_wb32(pb, 1); // BodySID
1773 avio_wb64(pb, mxf->body_partition_offset[i]);
1774 }
1775
1776 avio_wb32(pb, 0); // BodySID of footer partition
1777 avio_wb64(pb, mxf->footer_partition_offset);
1778
1779 avio_wb32(pb, avio_tell(pb) - pos + 4);
1780 }
1781
1782 static int mxf_write_footer(AVFormatContext *s)
1783 {
1784 MXFContext *mxf = s->priv_data;
1785 AVIOContext *pb = s->pb;
1786 int err;
1787
1788 mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1789
1790 mxf_write_klv_fill(s);
1791 mxf->footer_partition_offset = avio_tell(pb);
1792 if (mxf->edit_unit_byte_count) { // no need to repeat index
1793 if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
1794 return err;
1795 } else {
1796 if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
1797 return err;
1798 mxf_write_klv_fill(s);
1799 mxf_write_index_table_segment(s);
1800 }
1801
1802 mxf_write_klv_fill(s);
1803 mxf_write_random_index_pack(s);
1804
1805 if (s->pb->seekable) {
1806 avio_seek(pb, 0, SEEK_SET);
1807 if (mxf->edit_unit_byte_count) {
1808 if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
1809 return err;
1810 mxf_write_klv_fill(s);
1811 mxf_write_index_table_segment(s);
1812 } else {
1813 if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
1814 return err;
1815 }
1816 }
1817
1818 ff_audio_interleave_close(s);
1819
1820 av_freep(&mxf->index_entries);
1821 av_freep(&mxf->body_partition_offset);
1822 av_freep(&mxf->timecode_track->priv_data);
1823 av_freep(&mxf->timecode_track);
1824
1825 mxf_free(s);
1826
1827 return 0;
1828 }
1829
1830 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1831 {
1832 int i, stream_count = 0;
1833
1834 for (i = 0; i < s->nb_streams; i++)
1835 stream_count += !!s->streams[i]->last_in_packet_buffer;
1836
1837 if (stream_count && (s->nb_streams == stream_count || flush)) {
1838 AVPacketList *pktl = s->packet_buffer;
1839 if (s->nb_streams != stream_count) {
1840 AVPacketList *last = NULL;
1841 // find last packet in edit unit
1842 while (pktl) {
1843 if (!stream_count || pktl->pkt.stream_index == 0)
1844 break;
1845 last = pktl;
1846 pktl = pktl->next;
1847 stream_count--;
1848 }
1849 // purge packet queue
1850 while (pktl) {
1851 AVPacketList *next = pktl->next;
1852
1853 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
1854 s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
1855 av_free_packet(&pktl->pkt);
1856 av_freep(&pktl);
1857 pktl = next;
1858 }
1859 if (last)
1860 last->next = NULL;
1861 else {
1862 s->packet_buffer = NULL;
1863 s->packet_buffer_end= NULL;
1864 goto out;
1865 }
1866 pktl = s->packet_buffer;
1867 }
1868
1869 *out = pktl->pkt;
1870 av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
1871 s->packet_buffer = pktl->next;
1872 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
1873 s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
1874 if(!s->packet_buffer)
1875 s->packet_buffer_end= NULL;
1876 av_freep(&pktl);
1877 return 1;
1878 } else {
1879 out:
1880 av_init_packet(out);
1881 return 0;
1882 }
1883 }
1884
1885 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1886 {
1887 MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
1888 MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1889
1890 return next->dts > pkt->dts ||
1891 (next->dts == pkt->dts && sc->order < sc2->order);
1892 }
1893
1894 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1895 {
1896 return ff_audio_rechunk_interleave(s, out, pkt, flush,
1897 mxf_interleave_get_packet, mxf_compare_timestamps);
1898 }
1899
1900 AVOutputFormat ff_mxf_muxer = {
1901 .name = "mxf",
1902 .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
1903 .mime_type = "application/mxf",
1904 .extensions = "mxf",
1905 .priv_data_size = sizeof(MXFContext),
1906 .audio_codec = AV_CODEC_ID_PCM_S16LE,
1907 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
1908 .write_header = mxf_write_header,
1909 .write_packet = mxf_write_packet,
1910 .write_trailer = mxf_write_footer,
1911 .flags = AVFMT_NOTIMESTAMPS,
1912 .interleave_packet = mxf_interleave,
1913 };
1914
1915 AVOutputFormat ff_mxf_d10_muxer = {
1916 .name = "mxf_d10",
1917 .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
1918 .mime_type = "application/mxf",
1919 .priv_data_size = sizeof(MXFContext),
1920 .audio_codec = AV_CODEC_ID_PCM_S16LE,
1921 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
1922 .write_header = mxf_write_header,
1923 .write_packet = mxf_write_packet,
1924 .write_trailer = mxf_write_footer,
1925 .flags = AVFMT_NOTIMESTAMPS,
1926 .interleave_packet = mxf_interleave,
1927 };