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flacdec: remove unneeded local variable
[FFMpeg-mirror/lagarith.git] / libavformat / mxfenc.c
blobab8f36b487df6cf666ace31e0e3a0a726c5b3a9e
1 /*
2 * MXF muxer
3 * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
4 * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /*
24 * References
25 * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
26 * SMPTE 377M MXF File Format Specifications
27 * SMPTE 379M MXF Generic Container
28 * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29 * SMPTE RP210: SMPTE Metadata Dictionary
30 * SMPTE RP224: Registry of SMPTE Universal Labels
31 */
32
33 //#define DEBUG
34
35 #include <math.h>
36 #include <time.h>
37
38 #include "libavutil/fifo.h"
39 #include "libavutil/random_seed.h"
40 #include "libavcodec/bytestream.h"
41 #include "audiointerleave.h"
42 #include "avformat.h"
43 #include "mxf.h"
44
45 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
46 static const int PAL_samples_per_frame[] = { 1920, 0 };
47
48 AVOutputFormat mxf_d10_muxer;
49
50 #define EDIT_UNITS_PER_BODY 250
51 #define KAG_SIZE 512
52
53 typedef struct {
54 int local_tag;
55 UID uid;
56 } MXFLocalTagPair;
57
58 typedef struct {
59 uint8_t flags;
60 uint64_t offset;
61 unsigned slice_offset; ///< offset of audio slice
62 } MXFIndexEntry;
63
64 typedef struct {
65 AudioInterleaveContext aic;
66 UID track_essence_element_key;
67 int index; ///< index in mxf_essence_container_uls table
68 const UID *codec_ul;
69 int order; ///< interleaving order if dts are equal
70 int interlaced; ///< wether picture is interlaced
71 int temporal_reordering;
72 AVRational aspect_ratio; ///< display aspect ratio
73 } MXFStreamContext;
74
75 typedef struct {
76 UID container_ul;
77 UID element_ul;
78 UID codec_ul;
79 void (*write_desc)();
80 } MXFContainerEssenceEntry;
81
82 static const struct {
83 enum CodecID id;
84 int index;
85 } mxf_essence_mappings[] = {
86 { CODEC_ID_MPEG2VIDEO, 0 },
87 { CODEC_ID_PCM_S24LE, 1 },
88 { CODEC_ID_PCM_S16LE, 1 },
89 { 0 }
90 };
91
92 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
93 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
94 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
95 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
96 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
97
98 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
99 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
100 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
101 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
102 mxf_write_mpegvideo_desc },
103 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
104 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
105 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
106 mxf_write_aes3_desc },
107 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
108 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
109 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
110 mxf_write_wav_desc },
111 // D-10 625/50 PAL 50mb/s
112 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
113 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
114 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
115 mxf_write_cdci_desc },
116 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
117 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
118 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
119 mxf_write_generic_sound_desc },
120 // D-10 525/60 NTSC 50mb/s
121 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
122 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
123 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
124 mxf_write_cdci_desc },
125 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
126 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
127 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
128 mxf_write_generic_sound_desc },
129 // D-10 625/50 PAL 40mb/s
130 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
131 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
132 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
133 mxf_write_cdci_desc },
134 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
135 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
136 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
137 mxf_write_generic_sound_desc },
138 // D-10 525/60 NTSC 40mb/s
139 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
140 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
141 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
142 mxf_write_cdci_desc },
143 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
144 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
145 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
146 mxf_write_generic_sound_desc },
147 // D-10 625/50 PAL 30mb/s
148 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
149 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
150 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
151 mxf_write_cdci_desc },
152 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
153 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
154 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
155 mxf_write_generic_sound_desc },
156 // D-10 525/60 NTSC 30mb/s
157 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
158 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
159 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
160 mxf_write_cdci_desc },
161 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
162 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
163 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
164 mxf_write_generic_sound_desc },
165 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
166 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
167 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
168 NULL },
169 };
170
171 typedef struct MXFContext {
172 int64_t footer_partition_offset;
173 int essence_container_count;
174 AVRational time_base;
175 int header_written;
176 MXFIndexEntry *index_entries;
177 unsigned edit_units_count;
178 uint64_t timestamp; ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
179 uint8_t slice_count; ///< index slice count minus 1 (1 if no audio, 0 otherwise)
180 int last_indexed_edit_unit;
181 uint64_t *body_partition_offset;
182 unsigned body_partitions_count;
183 int last_key_index; ///< index of last key frame
184 uint64_t duration;
185 AVStream *timecode_track;
186 int timecode_base; ///< rounded time code base (25 or 30)
187 int timecode_start; ///< frame number computed from mpeg-2 gop header timecode
188 int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
189 int edit_unit_byte_count; ///< fixed edit unit byte count
190 uint64_t body_offset;
191 uint32_t instance_number;
192 uint8_t umid[16]; ///< unique material identifier
193 } MXFContext;
194
195 static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
196 static const uint8_t umid_ul[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
197
198 /**
199 * complete key for operation pattern, partitions, and primer pack
200 */
201 static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
202 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
203 static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
204 static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
205 static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
206 static const uint8_t header_open_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }; // OpenIncomplete
207 static const uint8_t header_closed_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
208 static const uint8_t klv_fill_key[] = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
209 static const uint8_t body_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
210
211 /**
212 * partial key for header metadata
213 */
214 static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
215 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
216
217 /**
218 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
219 */
220 static const MXFLocalTagPair mxf_local_tag_batch[] = {
221 // preface set
222 { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
223 { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
224 { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
225 { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
226 { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
227 { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
228 { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
229 { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
230 // Identification
231 { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
232 { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
233 { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
234 { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
235 { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
236 { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
237 // Content Storage
238 { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
239 { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
240 // Essence Container Data
241 { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
242 { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
243 // Package
244 { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
245 { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
246 { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
247 { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
248 { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
249 // Track
250 { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
251 { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
252 { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
253 { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
254 { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
255 // Sequence
256 { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
257 { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
258 { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
259 // Source Clip
260 { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
261 { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
262 { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
263 // Timecode Component
264 { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
265 { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
266 { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
267 // File Descriptor
268 { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
269 { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
270 { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
271 { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
272 // Generic Picture Essence Descriptor
273 { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
274 { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
275 { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
276 { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
277 { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
278 { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
279 { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
280 { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
281 // CDCI Picture Essence Descriptor
282 { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
283 { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
284 // Generic Sound Essence Descriptor
285 { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
286 { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
287 { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
288 { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
289 { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
290 // Index Table Segment
291 { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
292 { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
293 { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
294 { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
295 { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
296 { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
297 { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
298 { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
299 // MPEG video Descriptor
300 { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
301 // Wave Audio Essence Descriptor
302 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
303 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
304 };
305
306 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
307 {
308 put_buffer(pb, uuid_base, 12);
309 put_be16(pb, type);
310 put_be16(pb, value);
311 }
312
313 static void mxf_write_umid(AVFormatContext *s, int type)
314 {
315 MXFContext *mxf = s->priv_data;
316 put_buffer(s->pb, umid_ul, 13);
317 put_be24(s->pb, mxf->instance_number);
318 put_buffer(s->pb, mxf->umid, 15);
319 put_byte(s->pb, type);
320 }
321
322 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
323 {
324 put_be32(pb, ref_count);
325 put_be32(pb, 16);
326 }
327
328 static int klv_ber_length(uint64_t len)
329 {
330 if (len < 128)
331 return 1;
332 else
333 return (av_log2(len) >> 3) + 2;
334 }
335
336 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
337 {
338 // Determine the best BER size
339 int size;
340 if (len < 128) {
341 //short form
342 put_byte(pb, len);
343 return 1;
344 }
345
346 size = (av_log2(len) >> 3) + 1;
347
348 // long form
349 put_byte(pb, 0x80 + size);
350 while(size) {
351 size--;
352 put_byte(pb, len >> 8 * size & 0xff);
353 }
354 return 0;
355 }
356
357 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
358 {
359 put_byte(pb, 0x80 + 3);
360 put_be24(pb, len);
361 }
362
363 /*
364 * Get essence container ul index
365 */
366 static int mxf_get_essence_container_ul_index(enum CodecID id)
367 {
368 int i;
369 for (i = 0; mxf_essence_mappings[i].id; i++)
370 if (mxf_essence_mappings[i].id == id)
371 return mxf_essence_mappings[i].index;
372 return -1;
373 }
374
375 static void mxf_write_primer_pack(AVFormatContext *s)
376 {
377 ByteIOContext *pb = s->pb;
378 int local_tag_number, i = 0;
379
380 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
381
382 put_buffer(pb, primer_pack_key, 16);
383 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
384
385 put_be32(pb, local_tag_number); // local_tag num
386 put_be32(pb, 18); // item size, always 18 according to the specs
387
388 for (i = 0; i < local_tag_number; i++) {
389 put_be16(pb, mxf_local_tag_batch[i].local_tag);
390 put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
391 }
392 }
393
394 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
395 {
396 put_be16(pb, tag);
397 put_be16(pb, size);
398 }
399
400 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
401 {
402 put_buffer(pb, header_metadata_key, 13);
403 put_be24(pb, value);
404 }
405
406 static void mxf_free(AVFormatContext *s)
407 {
408 int i;
409
410 for (i = 0; i < s->nb_streams; i++) {
411 AVStream *st = s->streams[i];
412 av_freep(&st->priv_data);
413 }
414 }
415
416 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
417 {
418 const MXFCodecUL *uls = ff_mxf_data_definition_uls;
419 while (uls->uid[0]) {
420 if (type == uls->id)
421 break;
422 uls++;
423 }
424 return uls;
425 }
426
427 static void mxf_write_essence_container_refs(AVFormatContext *s)
428 {
429 MXFContext *c = s->priv_data;
430 ByteIOContext *pb = s->pb;
431 int i;
432
433 mxf_write_refs_count(pb, c->essence_container_count);
434 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
435 for (i = 0; i < c->essence_container_count; i++) {
436 MXFStreamContext *sc = s->streams[i]->priv_data;
437 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
438 }
439 }
440
441 static void mxf_write_preface(AVFormatContext *s)
442 {
443 MXFContext *mxf = s->priv_data;
444 ByteIOContext *pb = s->pb;
445
446 mxf_write_metadata_key(pb, 0x012f00);
447 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
448 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
449
450 // write preface set uid
451 mxf_write_local_tag(pb, 16, 0x3C0A);
452 mxf_write_uuid(pb, Preface, 0);
453 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
454
455 // last modified date
456 mxf_write_local_tag(pb, 8, 0x3B02);
457 put_be64(pb, mxf->timestamp);
458
459 // write version
460 mxf_write_local_tag(pb, 2, 0x3B05);
461 put_be16(pb, 258); // v1.2
462
463 // write identification_refs
464 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
465 mxf_write_refs_count(pb, 1);
466 mxf_write_uuid(pb, Identification, 0);
467
468 // write content_storage_refs
469 mxf_write_local_tag(pb, 16, 0x3B03);
470 mxf_write_uuid(pb, ContentStorage, 0);
471
472 // operational pattern
473 mxf_write_local_tag(pb, 16, 0x3B09);
474 put_buffer(pb, op1a_ul, 16);
475
476 // write essence_container_refs
477 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
478 mxf_write_essence_container_refs(s);
479
480 // write dm_scheme_refs
481 mxf_write_local_tag(pb, 8, 0x3B0B);
482 put_be64(pb, 0);
483 }
484
485 /*
486 * Write a local tag containing an ascii string as utf-16
487 */
488 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
489 {
490 int i, size = strlen(value);
491 mxf_write_local_tag(pb, size*2, tag);
492 for (i = 0; i < size; i++)
493 put_be16(pb, value[i]);
494 }
495
496 static void mxf_write_identification(AVFormatContext *s)
497 {
498 MXFContext *mxf = s->priv_data;
499 ByteIOContext *pb = s->pb;
500 const char *company = "FFmpeg";
501 const char *product = "OP1a Muxer";
502 const char *version;
503 int length;
504
505 mxf_write_metadata_key(pb, 0x013000);
506 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
507
508 version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
509 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
510 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
511 klv_encode_ber_length(pb, length);
512
513 // write uid
514 mxf_write_local_tag(pb, 16, 0x3C0A);
515 mxf_write_uuid(pb, Identification, 0);
516 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
517
518 // write generation uid
519 mxf_write_local_tag(pb, 16, 0x3C09);
520 mxf_write_uuid(pb, Identification, 1);
521
522 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
523 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
524 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
525
526 // write product uid
527 mxf_write_local_tag(pb, 16, 0x3C05);
528 mxf_write_uuid(pb, Identification, 2);
529
530 // modification date
531 mxf_write_local_tag(pb, 8, 0x3C06);
532 put_be64(pb, mxf->timestamp);
533 }
534
535 static void mxf_write_content_storage(AVFormatContext *s)
536 {
537 ByteIOContext *pb = s->pb;
538
539 mxf_write_metadata_key(pb, 0x011800);
540 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
541 klv_encode_ber_length(pb, 92);
542
543 // write uid
544 mxf_write_local_tag(pb, 16, 0x3C0A);
545 mxf_write_uuid(pb, ContentStorage, 0);
546 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
547
548 // write package reference
549 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
550 mxf_write_refs_count(pb, 2);
551 mxf_write_uuid(pb, MaterialPackage, 0);
552 mxf_write_uuid(pb, SourcePackage, 0);
553
554 // write essence container data
555 mxf_write_local_tag(pb, 8 + 16, 0x1902);
556 mxf_write_refs_count(pb, 1);
557 mxf_write_uuid(pb, EssenceContainerData, 0);
558 }
559
560 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
561 {
562 MXFContext *mxf = s->priv_data;
563 ByteIOContext *pb = s->pb;
564 MXFStreamContext *sc = st->priv_data;
565
566 mxf_write_metadata_key(pb, 0x013b00);
567 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
568 klv_encode_ber_length(pb, 80);
569
570 // write track uid
571 mxf_write_local_tag(pb, 16, 0x3C0A);
572 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
573 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
574
575 // write track id
576 mxf_write_local_tag(pb, 4, 0x4801);
577 put_be32(pb, st->index+2);
578
579 // write track number
580 mxf_write_local_tag(pb, 4, 0x4804);
581 if (type == MaterialPackage)
582 put_be32(pb, 0); // track number of material package is 0
583 else
584 put_buffer(pb, sc->track_essence_element_key + 12, 4);
585
586 mxf_write_local_tag(pb, 8, 0x4B01);
587 put_be32(pb, mxf->time_base.den);
588 put_be32(pb, mxf->time_base.num);
589
590 // write origin
591 mxf_write_local_tag(pb, 8, 0x4B02);
592 put_be64(pb, 0);
593
594 // write sequence refs
595 mxf_write_local_tag(pb, 16, 0x4803);
596 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
597 }
598
599 static const uint8_t smpte_12m_timecode_track_data_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x01,0x01,0x00,0x00,0x00 };
600
601 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
602 {
603 MXFContext *mxf = s->priv_data;
604 ByteIOContext *pb = s->pb;
605
606 // find data define uls
607 mxf_write_local_tag(pb, 16, 0x0201);
608 if (st == mxf->timecode_track)
609 put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
610 else {
611 const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
612 put_buffer(pb, data_def_ul->uid, 16);
613 }
614
615 // write duration
616 mxf_write_local_tag(pb, 8, 0x0202);
617 put_be64(pb, mxf->duration);
618 }
619
620 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
621 {
622 MXFContext *mxf = s->priv_data;
623 ByteIOContext *pb = s->pb;
624 enum MXFMetadataSetType component;
625
626 mxf_write_metadata_key(pb, 0x010f00);
627 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
628 klv_encode_ber_length(pb, 80);
629
630 mxf_write_local_tag(pb, 16, 0x3C0A);
631 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
632
633 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
634 mxf_write_common_fields(s, st);
635
636 // write structural component
637 mxf_write_local_tag(pb, 16 + 8, 0x1001);
638 mxf_write_refs_count(pb, 1);
639 if (st == mxf->timecode_track)
640 component = TimecodeComponent;
641 else
642 component = SourceClip;
643 if (type == SourcePackage)
644 component += TypeBottom;
645 mxf_write_uuid(pb, component, st->index);
646 }
647
648 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
649 {
650 MXFContext *mxf = s->priv_data;
651 ByteIOContext *pb = s->pb;
652
653 mxf_write_metadata_key(pb, 0x011400);
654 klv_encode_ber_length(pb, 75);
655
656 // UID
657 mxf_write_local_tag(pb, 16, 0x3C0A);
658 mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
659 TimecodeComponent + TypeBottom, st->index);
660
661 mxf_write_common_fields(s, st);
662
663 // Start Time Code
664 mxf_write_local_tag(pb, 8, 0x1501);
665 put_be64(pb, mxf->timecode_start);
666
667 // Rounded Time Code Base
668 mxf_write_local_tag(pb, 2, 0x1502);
669 put_be16(pb, mxf->timecode_base);
670
671 // Drop Frame
672 mxf_write_local_tag(pb, 1, 0x1503);
673 put_byte(pb, mxf->timecode_drop_frame);
674 }
675
676 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
677 {
678 ByteIOContext *pb = s->pb;
679 int i;
680
681 mxf_write_metadata_key(pb, 0x011100);
682 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
683 klv_encode_ber_length(pb, 108);
684
685 // write uid
686 mxf_write_local_tag(pb, 16, 0x3C0A);
687 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
688
689 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
690 mxf_write_common_fields(s, st);
691
692 // write start_position
693 mxf_write_local_tag(pb, 8, 0x1201);
694 put_be64(pb, 0);
695
696 // write source package uid, end of the reference
697 mxf_write_local_tag(pb, 32, 0x1101);
698 if (type == SourcePackage) {
699 for (i = 0; i < 4; i++)
700 put_be64(pb, 0);
701 } else
702 mxf_write_umid(s, 1);
703
704 // write source track id
705 mxf_write_local_tag(pb, 4, 0x1102);
706 if (type == SourcePackage)
707 put_be32(pb, 0);
708 else
709 put_be32(pb, st->index+2);
710 }
711
712 static void mxf_write_multi_descriptor(AVFormatContext *s)
713 {
714 MXFContext *mxf = s->priv_data;
715 ByteIOContext *pb = s->pb;
716 const uint8_t *ul;
717 int i;
718
719 mxf_write_metadata_key(pb, 0x014400);
720 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
721 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
722
723 mxf_write_local_tag(pb, 16, 0x3C0A);
724 mxf_write_uuid(pb, MultipleDescriptor, 0);
725 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
726
727 // write sample rate
728 mxf_write_local_tag(pb, 8, 0x3001);
729 put_be32(pb, mxf->time_base.den);
730 put_be32(pb, mxf->time_base.num);
731
732 // write essence container ul
733 mxf_write_local_tag(pb, 16, 0x3004);
734 if (mxf->essence_container_count > 1)
735 ul = multiple_desc_ul;
736 else {
737 MXFStreamContext *sc = s->streams[0]->priv_data;
738 ul = mxf_essence_container_uls[sc->index].container_ul;
739 }
740 put_buffer(pb, ul, 16);
741
742 // write sub descriptor refs
743 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
744 mxf_write_refs_count(pb, s->nb_streams);
745 for (i = 0; i < s->nb_streams; i++)
746 mxf_write_uuid(pb, SubDescriptor, i);
747 }
748
749 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
750 {
751 MXFContext *mxf = s->priv_data;
752 MXFStreamContext *sc = st->priv_data;
753 ByteIOContext *pb = s->pb;
754
755 put_buffer(pb, key, 16);
756 klv_encode_ber_length(pb, size+20+8+12+20);
757
758 mxf_write_local_tag(pb, 16, 0x3C0A);
759 mxf_write_uuid(pb, SubDescriptor, st->index);
760
761 mxf_write_local_tag(pb, 4, 0x3006);
762 put_be32(pb, st->index+2);
763
764 mxf_write_local_tag(pb, 8, 0x3001);
765 put_be32(pb, mxf->time_base.den);
766 put_be32(pb, mxf->time_base.num);
767
768 mxf_write_local_tag(pb, 16, 0x3004);
769 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
770 }
771
772 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
773 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
774 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
775 static const UID mxf_cdci_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
776 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
777
778 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
779 {
780 MXFStreamContext *sc = st->priv_data;
781 ByteIOContext *pb = s->pb;
782 int stored_height = (st->codec->height+15)/16*16;
783 int display_height;
784 int f1, f2;
785
786 mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
787
788 mxf_write_local_tag(pb, 4, 0x3203);
789 put_be32(pb, st->codec->width);
790
791 mxf_write_local_tag(pb, 4, 0x3202);
792 put_be32(pb, stored_height>>sc->interlaced);
793
794 mxf_write_local_tag(pb, 4, 0x3209);
795 put_be32(pb, st->codec->width);
796
797 if (st->codec->height == 608) // PAL + VBI
798 display_height = 576;
799 else if (st->codec->height == 512) // NTSC + VBI
800 display_height = 486;
801 else
802 display_height = st->codec->height;
803
804 mxf_write_local_tag(pb, 4, 0x3208);
805 put_be32(pb, display_height>>sc->interlaced);
806
807 // component depth
808 mxf_write_local_tag(pb, 4, 0x3301);
809 put_be32(pb, 8);
810
811 // horizontal subsampling
812 mxf_write_local_tag(pb, 4, 0x3302);
813 put_be32(pb, 2);
814
815 // frame layout
816 mxf_write_local_tag(pb, 1, 0x320C);
817 put_byte(pb, sc->interlaced);
818
819 // video line map
820 switch (st->codec->height) {
821 case 576: f1 = 23; f2 = 336; break;
822 case 608: f1 = 7; f2 = 320; break;
823 case 480: f1 = 20; f2 = 283; break;
824 case 512: f1 = 7; f2 = 270; break;
825 case 720: f1 = 26; f2 = 0; break; // progressive
826 case 1080: f1 = 21; f2 = 584; break;
827 default: f1 = 0; f2 = 0; break;
828 }
829
830 if (!sc->interlaced) {
831 f2 = 0;
832 f1 *= 2;
833 }
834
835 mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
836 put_be32(pb, sc->interlaced ? 2 : 1);
837 put_be32(pb, 4);
838 put_be32(pb, f1);
839 if (sc->interlaced)
840 put_be32(pb, f2);
841
842 mxf_write_local_tag(pb, 8, 0x320E);
843 put_be32(pb, sc->aspect_ratio.num);
844 put_be32(pb, sc->aspect_ratio.den);
845
846 mxf_write_local_tag(pb, 16, 0x3201);
847 put_buffer(pb, *sc->codec_ul, 16);
848 }
849
850 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
851 {
852 mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
853 }
854
855 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
856 {
857 ByteIOContext *pb = s->pb;
858
859 mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8);
860
861 // bit rate
862 mxf_write_local_tag(pb, 4, 0x8000);
863 put_be32(pb, st->codec->bit_rate);
864 }
865
866 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
867 {
868 ByteIOContext *pb = s->pb;
869
870 mxf_write_generic_desc(s, st, key, size+5+12+8+8);
871
872 // audio locked
873 mxf_write_local_tag(pb, 1, 0x3D02);
874 put_byte(pb, 1);
875
876 // write audio sampling rate
877 mxf_write_local_tag(pb, 8, 0x3D03);
878 put_be32(pb, st->codec->sample_rate);
879 put_be32(pb, 1);
880
881 mxf_write_local_tag(pb, 4, 0x3D07);
882 put_be32(pb, st->codec->channels);
883
884 mxf_write_local_tag(pb, 4, 0x3D01);
885 put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
886 }
887
888 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
889 {
890 ByteIOContext *pb = s->pb;
891
892 mxf_write_generic_sound_common(s, st, key, size+6+8);
893
894 mxf_write_local_tag(pb, 2, 0x3D0A);
895 put_be16(pb, st->codec->block_align);
896
897 // avg bytes per sec
898 mxf_write_local_tag(pb, 4, 0x3D09);
899 put_be32(pb, st->codec->block_align*st->codec->sample_rate);
900 }
901
902 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
903 {
904 mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
905 }
906
907 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
908 {
909 mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
910 }
911
912 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
913 {
914 mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
915 }
916
917 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
918 {
919 MXFContext *mxf = s->priv_data;
920 ByteIOContext *pb = s->pb;
921 int i, track_count = s->nb_streams+1;
922
923 if (type == MaterialPackage) {
924 mxf_write_metadata_key(pb, 0x013600);
925 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
926 klv_encode_ber_length(pb, 92 + 16*track_count);
927 } else {
928 mxf_write_metadata_key(pb, 0x013700);
929 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
930 klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
931 }
932
933 // write uid
934 mxf_write_local_tag(pb, 16, 0x3C0A);
935 mxf_write_uuid(pb, type, 0);
936 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
937 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
938
939 // write package umid
940 mxf_write_local_tag(pb, 32, 0x4401);
941 mxf_write_umid(s, type == SourcePackage);
942 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
943
944 // package creation date
945 mxf_write_local_tag(pb, 8, 0x4405);
946 put_be64(pb, mxf->timestamp);
947
948 // package modified date
949 mxf_write_local_tag(pb, 8, 0x4404);
950 put_be64(pb, mxf->timestamp);
951
952 // write track refs
953 mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
954 mxf_write_refs_count(pb, track_count);
955 mxf_write_uuid(pb, type == MaterialPackage ? Track :
956 Track + TypeBottom, -1); // timecode track
957 for (i = 0; i < s->nb_streams; i++)
958 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
959
960 // write multiple descriptor reference
961 if (type == SourcePackage) {
962 mxf_write_local_tag(pb, 16, 0x4701);
963 if (s->nb_streams > 1) {
964 mxf_write_uuid(pb, MultipleDescriptor, 0);
965 mxf_write_multi_descriptor(s);
966 } else
967 mxf_write_uuid(pb, SubDescriptor, 0);
968 }
969
970 // write timecode track
971 mxf_write_track(s, mxf->timecode_track, type);
972 mxf_write_sequence(s, mxf->timecode_track, type);
973 mxf_write_timecode_component(s, mxf->timecode_track, type);
974
975 for (i = 0; i < s->nb_streams; i++) {
976 AVStream *st = s->streams[i];
977 mxf_write_track(s, st, type);
978 mxf_write_sequence(s, st, type);
979 mxf_write_structural_component(s, st, type);
980
981 if (type == SourcePackage) {
982 MXFStreamContext *sc = st->priv_data;
983 mxf_essence_container_uls[sc->index].write_desc(s, st);
984 }
985 }
986 }
987
988 static int mxf_write_essence_container_data(AVFormatContext *s)
989 {
990 ByteIOContext *pb = s->pb;
991
992 mxf_write_metadata_key(pb, 0x012300);
993 klv_encode_ber_length(pb, 72);
994
995 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
996 mxf_write_uuid(pb, EssenceContainerData, 0);
997
998 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
999 mxf_write_umid(s, 1);
1000
1001 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1002 put_be32(pb, 1);
1003
1004 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1005 put_be32(pb, 2);
1006
1007 return 0;
1008 }
1009
1010 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1011 {
1012 mxf_write_preface(s);
1013 mxf_write_identification(s);
1014 mxf_write_content_storage(s);
1015 mxf_write_package(s, MaterialPackage);
1016 mxf_write_package(s, SourcePackage);
1017 mxf_write_essence_container_data(s);
1018 return 0;
1019 }
1020
1021 static unsigned klv_fill_size(uint64_t size)
1022 {
1023 unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1024 if (pad < 20) // smallest fill item possible
1025 return pad + KAG_SIZE;
1026 else
1027 return pad & (KAG_SIZE-1);
1028 }
1029
1030 static void mxf_write_index_table_segment(AVFormatContext *s)
1031 {
1032 MXFContext *mxf = s->priv_data;
1033 ByteIOContext *pb = s->pb;
1034 int i, j;
1035 int temporal_reordering = 0;
1036 int key_index = mxf->last_key_index;
1037
1038 av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1039
1040 if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1041 return;
1042
1043 put_buffer(pb, index_table_segment_key, 16);
1044
1045 if (mxf->edit_unit_byte_count) {
1046 klv_encode_ber_length(pb, 80);
1047 } else {
1048 klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1049 12+mxf->edit_units_count*(11+mxf->slice_count*4));
1050 }
1051
1052 // instance id
1053 mxf_write_local_tag(pb, 16, 0x3C0A);
1054 mxf_write_uuid(pb, IndexTableSegment, 0);
1055
1056 // index edit rate
1057 mxf_write_local_tag(pb, 8, 0x3F0B);
1058 put_be32(pb, mxf->time_base.den);
1059 put_be32(pb, mxf->time_base.num);
1060
1061 // index start position
1062 mxf_write_local_tag(pb, 8, 0x3F0C);
1063 put_be64(pb, mxf->last_indexed_edit_unit);
1064
1065 // index duration
1066 mxf_write_local_tag(pb, 8, 0x3F0D);
1067 put_be64(pb, mxf->edit_units_count);
1068
1069 // edit unit byte count
1070 mxf_write_local_tag(pb, 4, 0x3F05);
1071 put_be32(pb, mxf->edit_unit_byte_count);
1072
1073 // index sid
1074 mxf_write_local_tag(pb, 4, 0x3F06);
1075 put_be32(pb, 2);
1076
1077 // body sid
1078 mxf_write_local_tag(pb, 4, 0x3F07);
1079 put_be32(pb, 1);
1080
1081 if (!mxf->edit_unit_byte_count) {
1082 // real slice count - 1
1083 mxf_write_local_tag(pb, 1, 0x3F08);
1084 put_byte(pb, mxf->slice_count);
1085
1086 // delta entry array
1087 mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1088 put_be32(pb, s->nb_streams+1); // num of entries
1089 put_be32(pb, 6); // size of one entry
1090 // write system item delta entry
1091 put_byte(pb, 0);
1092 put_byte(pb, 0); // slice entry
1093 put_be32(pb, 0); // element delta
1094 for (i = 0; i < s->nb_streams; i++) {
1095 AVStream *st = s->streams[i];
1096 MXFStreamContext *sc = st->priv_data;
1097 put_byte(pb, sc->temporal_reordering);
1098 if (sc->temporal_reordering)
1099 temporal_reordering = 1;
1100 if (i == 0) { // video track
1101 put_byte(pb, 0); // slice number
1102 put_be32(pb, KAG_SIZE); // system item size including klv fill
1103 } else { // audio track
1104 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1105 audio_frame_size += klv_fill_size(audio_frame_size);
1106 put_byte(pb, 1);
1107 put_be32(pb, (i-1)*audio_frame_size); // element delta
1108 }
1109 }
1110
1111 mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1112 put_be32(pb, mxf->edit_units_count); // num of entries
1113 put_be32(pb, 11+mxf->slice_count*4); // size of one entry
1114 for (i = 0; i < mxf->edit_units_count; i++) {
1115 if (temporal_reordering) {
1116 int temporal_offset = 0;
1117 for (j = i+1; j < mxf->edit_units_count; j++) {
1118 temporal_offset++;
1119 if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1120 // next is not b, so is reordered
1121 if (!(mxf->index_entries[i+1].flags & 0x10)) {
1122 if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1123 temporal_offset = 0;
1124 else
1125 temporal_offset = -temporal_offset;
1126 }
1127 break;
1128 }
1129 }
1130 put_byte(pb, temporal_offset);
1131 } else
1132 put_byte(pb, 0);
1133 if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1134 mxf->last_key_index = key_index;
1135 key_index = i;
1136 }
1137 if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1138 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1139 put_byte(pb, mxf->last_key_index - i);
1140 } else {
1141 put_byte(pb, key_index - i); // key frame offset
1142 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1143 mxf->last_key_index = key_index;
1144 }
1145 put_byte(pb, mxf->index_entries[i].flags);
1146 // stream offset
1147 put_be64(pb, mxf->index_entries[i].offset);
1148 if (s->nb_streams > 1)
1149 put_be32(pb, mxf->index_entries[i].slice_offset);
1150 }
1151
1152 mxf->last_key_index = key_index - mxf->edit_units_count;
1153 mxf->last_indexed_edit_unit += mxf->edit_units_count;
1154 mxf->edit_units_count = 0;
1155 }
1156 }
1157
1158 static void mxf_write_klv_fill(AVFormatContext *s)
1159 {
1160 unsigned pad = klv_fill_size(url_ftell(s->pb));
1161 if (pad) {
1162 put_buffer(s->pb, klv_fill_key, 16);
1163 pad -= 16 + 4;
1164 klv_encode_ber4_length(s->pb, pad);
1165 for (; pad; pad--)
1166 put_byte(s->pb, 0);
1167 assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1168 }
1169 }
1170
1171 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1172 int indexsid,
1173 const uint8_t *key, int write_metadata)
1174 {
1175 MXFContext *mxf = s->priv_data;
1176 ByteIOContext *pb = s->pb;
1177 int64_t header_byte_count_offset;
1178 unsigned index_byte_count = 0;
1179 uint64_t partition_offset = url_ftell(pb);
1180
1181 if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1182 index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1183 12+mxf->edit_units_count*(11+mxf->slice_count*4);
1184 else if (mxf->edit_unit_byte_count && indexsid)
1185 index_byte_count = 80;
1186
1187 if (index_byte_count) {
1188 // add encoded ber length
1189 index_byte_count += 16 + klv_ber_length(index_byte_count);
1190 index_byte_count += klv_fill_size(index_byte_count);
1191 }
1192
1193 if (!memcmp(key, body_partition_key, 16)) {
1194 mxf->body_partition_offset =
1195 av_realloc(mxf->body_partition_offset,
1196 (mxf->body_partitions_count+1)*
1197 sizeof(*mxf->body_partition_offset));
1198 mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1199 }
1200
1201 // write klv
1202 put_buffer(pb, key, 16);
1203 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1204
1205 // write partition value
1206 put_be16(pb, 1); // majorVersion
1207 put_be16(pb, 2); // minorVersion
1208 put_be32(pb, KAG_SIZE); // KAGSize
1209
1210 put_be64(pb, partition_offset); // ThisPartition
1211
1212 if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1213 put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1214 else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1215 put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1216 else
1217 put_be64(pb, 0);
1218
1219 put_be64(pb, mxf->footer_partition_offset); // footerPartition
1220
1221 // set offset
1222 header_byte_count_offset = url_ftell(pb);
1223 put_be64(pb, 0); // headerByteCount, update later
1224
1225 // indexTable
1226 put_be64(pb, index_byte_count); // indexByteCount
1227 put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1228
1229 // BodyOffset
1230 if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1231 put_be64(pb, mxf->body_offset);
1232 } else
1233 put_be64(pb, 0);
1234
1235 put_be32(pb, bodysid); // bodySID
1236
1237 // operational pattern
1238 put_buffer(pb, op1a_ul, 16);
1239
1240 // essence container
1241 mxf_write_essence_container_refs(s);
1242
1243 if (write_metadata) {
1244 // mark the start of the headermetadata and calculate metadata size
1245 int64_t pos, start;
1246 unsigned header_byte_count;
1247
1248 mxf_write_klv_fill(s);
1249 start = url_ftell(s->pb);
1250 mxf_write_primer_pack(s);
1251 mxf_write_header_metadata_sets(s);
1252 pos = url_ftell(s->pb);
1253 header_byte_count = pos - start + klv_fill_size(pos);
1254
1255 // update header_byte_count
1256 url_fseek(pb, header_byte_count_offset, SEEK_SET);
1257 put_be64(pb, header_byte_count);
1258 url_fseek(pb, pos, SEEK_SET);
1259 }
1260
1261 put_flush_packet(pb);
1262 }
1263
1264 static const UID mxf_mpeg2_codec_uls[] = {
1265 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1266 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1267 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1268 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1269 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1270 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1271 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1272 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1273 };
1274
1275 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1276 {
1277 if (avctx->profile == 4) { // Main
1278 if (avctx->level == 8) // Main
1279 return avctx->gop_size ?
1280 &mxf_mpeg2_codec_uls[1] :
1281 &mxf_mpeg2_codec_uls[0];
1282 else if (avctx->level == 4) // High
1283 return avctx->gop_size ?
1284 &mxf_mpeg2_codec_uls[5] :
1285 &mxf_mpeg2_codec_uls[4];
1286 } else if (avctx->profile == 0) { // 422
1287 if (avctx->level == 5) // Main
1288 return avctx->gop_size ?
1289 &mxf_mpeg2_codec_uls[3] :
1290 &mxf_mpeg2_codec_uls[2];
1291 else if (avctx->level == 2) // High
1292 return avctx->gop_size ?
1293 &mxf_mpeg2_codec_uls[7] :
1294 &mxf_mpeg2_codec_uls[6];
1295 }
1296 return NULL;
1297 }
1298
1299 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1300 {
1301 MXFStreamContext *sc = st->priv_data;
1302 MXFContext *mxf = s->priv_data;
1303 uint32_t c = -1;
1304 int i;
1305
1306 *flags = 0;
1307
1308 for(i = 0; i < pkt->size - 4; i++) {
1309 c = (c<<8) + pkt->data[i];
1310 if (c == 0x1B5) {
1311 if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1312 st->codec->profile = pkt->data[i+1] & 0x07;
1313 st->codec->level = pkt->data[i+2] >> 4;
1314 } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1315 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1316 break;
1317 }
1318 } else if (c == 0x1b8) { // gop
1319 if (i + 4 < pkt->size) {
1320 if (pkt->data[i+4]>>6 & 0x01) // closed
1321 *flags |= 0x80; // random access
1322 if (!mxf->header_written) {
1323 unsigned hours = (pkt->data[i+1]>>2) & 0x1f;
1324 unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1325 unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1326 unsigned frames = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1327 mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1328 mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1329 mxf->timecode_base + frames;
1330 if (mxf->timecode_drop_frame) {
1331 unsigned tminutes = 60 * hours + minutes;
1332 mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1333 }
1334 av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1335 hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1336 }
1337 }
1338 } else if (c == 0x1b3) { // seq
1339 *flags |= 0x40;
1340 if (i + 4 < pkt->size) {
1341 switch ((pkt->data[i+4]>>4) & 0xf) {
1342 case 2: sc->aspect_ratio = (AVRational){ 4, 3}; break;
1343 case 3: sc->aspect_ratio = (AVRational){ 16, 9}; break;
1344 case 4: sc->aspect_ratio = (AVRational){221,100}; break;
1345 default:
1346 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1347 st->codec->width, st->codec->height, 1024*1024);
1348 }
1349 }
1350 } else if (c == 0x100) { // pic
1351 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1352 if (pict_type == 2) { // P frame
1353 *flags |= 0x22;
1354 st->codec->gop_size = 1;
1355 } else if (pict_type == 3) { // B frame
1356 *flags |= 0x33;
1357 sc->temporal_reordering = -1;
1358 } else if (!pict_type) {
1359 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1360 return 0;
1361 }
1362 }
1363 }
1364 if (s->oformat != &mxf_d10_muxer)
1365 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1366 return !!sc->codec_ul;
1367 }
1368
1369 static uint64_t mxf_parse_timestamp(time_t timestamp)
1370 {
1371 struct tm *time = gmtime(&timestamp);
1372 return (uint64_t)(time->tm_year+1900) << 48 |
1373 (uint64_t)(time->tm_mon+1) << 40 |
1374 (uint64_t) time->tm_mday << 32 |
1375 time->tm_hour << 24 |
1376 time->tm_min << 16 |
1377 time->tm_sec << 8;
1378 }
1379
1380 static void mxf_gen_umid(AVFormatContext *s)
1381 {
1382 MXFContext *mxf = s->priv_data;
1383 uint32_t seed = ff_random_get_seed();
1384 uint64_t umid = seed + 0x5294713400000000LL;
1385
1386 AV_WB64(mxf->umid , umid);
1387 AV_WB64(mxf->umid+8, umid>>8);
1388
1389 mxf->instance_number = seed;
1390 }
1391
1392 static int mxf_write_header(AVFormatContext *s)
1393 {
1394 MXFContext *mxf = s->priv_data;
1395 int i;
1396 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1397 const int *samples_per_frame = NULL;
1398
1399 if (!s->nb_streams)
1400 return -1;
1401
1402 for (i = 0; i < s->nb_streams; i++) {
1403 AVStream *st = s->streams[i];
1404 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1405 if (!sc)
1406 return AVERROR(ENOMEM);
1407 st->priv_data = sc;
1408
1409 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1410 if (i != 0) {
1411 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1412 return -1;
1413 }
1414 if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1415 samples_per_frame = PAL_samples_per_frame;
1416 mxf->time_base = (AVRational){ 1, 25 };
1417 mxf->timecode_base = 25;
1418 } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1419 samples_per_frame = NTSC_samples_per_frame;
1420 mxf->time_base = (AVRational){ 1001, 30000 };
1421 mxf->timecode_base = 30;
1422 } else {
1423 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1424 return -1;
1425 }
1426 av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1427 if (s->oformat == &mxf_d10_muxer) {
1428 if (st->codec->bit_rate == 50000000)
1429 if (mxf->time_base.den == 25) sc->index = 3;
1430 else sc->index = 5;
1431 else if (st->codec->bit_rate == 40000000)
1432 if (mxf->time_base.den == 25) sc->index = 7;
1433 else sc->index = 9;
1434 else if (st->codec->bit_rate == 30000000)
1435 if (mxf->time_base.den == 25) sc->index = 11;
1436 else sc->index = 13;
1437 else {
1438 av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1439 return -1;
1440 }
1441
1442 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1443 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1444 mxf->time_base.num / (8*mxf->time_base.den);
1445 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1446 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1447 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1448 }
1449 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1450 if (st->codec->sample_rate != 48000) {
1451 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1452 return -1;
1453 }
1454 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1455 if (s->oformat == &mxf_d10_muxer) {
1456 if (st->index != 1) {
1457 av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1458 return -1;
1459 }
1460 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1461 st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1462 av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1463 }
1464 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1465 } else
1466 mxf->slice_count = 1;
1467 }
1468
1469 if (!sc->index) {
1470 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1471 if (sc->index == -1) {
1472 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1473 "codec not currently supported in container\n", i);
1474 return -1;
1475 }
1476 }
1477
1478 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1479
1480 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1481 sc->track_essence_element_key[15] = present[sc->index];
1482 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1483
1484 if (!present[sc->index])
1485 mxf->essence_container_count++;
1486 present[sc->index]++;
1487 }
1488
1489 if (s->oformat == &mxf_d10_muxer) {
1490 mxf->essence_container_count = 1;
1491 }
1492
1493 if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
1494 mxf_gen_umid(s);
1495
1496 for (i = 0; i < s->nb_streams; i++) {
1497 MXFStreamContext *sc = s->streams[i]->priv_data;
1498 // update element count
1499 sc->track_essence_element_key[13] = present[sc->index];
1500 sc->order = AV_RB32(sc->track_essence_element_key+12);
1501 }
1502
1503 if (s->timestamp)
1504 mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1505 mxf->duration = -1;
1506
1507 mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1508 if (!mxf->timecode_track)
1509 return AVERROR(ENOMEM);
1510 mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1511 if (!mxf->timecode_track->priv_data)
1512 return AVERROR(ENOMEM);
1513 mxf->timecode_track->index = -1;
1514
1515 if (!samples_per_frame)
1516 samples_per_frame = PAL_samples_per_frame;
1517
1518 if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1519 return -1;
1520
1521 return 0;
1522 }
1523
1524 static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1525 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 };
1526
1527 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1528 {
1529 return (0 << 31) | // color frame flag
1530 (0 << 30) | // drop frame flag
1531 ( ((frame % fps) / 10) << 28) | // tens of frames
1532 ( ((frame % fps) % 10) << 24) | // units of frames
1533 (0 << 23) | // field phase (NTSC), b0 (PAL)
1534 ((((frame / fps) % 60) / 10) << 20) | // tens of seconds
1535 ((((frame / fps) % 60) % 10) << 16) | // units of seconds
1536 (0 << 15) | // b0 (NTSC), b2 (PAL)
1537 ((((frame / (fps * 60)) % 60) / 10) << 12) | // tens of minutes
1538 ((((frame / (fps * 60)) % 60) % 10) << 8) | // units of minutes
1539 (0 << 7) | // b1
1540 (0 << 6) | // b2 (NSC), field phase (PAL)
1541 ((((frame / (fps * 3600) % 24)) / 10) << 4) | // tens of hours
1542 ( (frame / (fps * 3600) % 24)) % 10; // units of hours
1543 }
1544
1545 static void mxf_write_system_item(AVFormatContext *s)
1546 {
1547 MXFContext *mxf = s->priv_data;
1548 ByteIOContext *pb = s->pb;
1549 unsigned frame;
1550 uint32_t time_code;
1551
1552 frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1553
1554 // write system metadata pack
1555 put_buffer(pb, system_metadata_pack_key, 16);
1556 klv_encode_ber4_length(pb, 57);
1557 put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1558 put_byte(pb, 0x04); // content package rate
1559 put_byte(pb, 0x00); // content package type
1560 put_be16(pb, 0x00); // channel handle
1561 put_be16(pb, frame); // continuity count
1562 if (mxf->essence_container_count > 1)
1563 put_buffer(pb, multiple_desc_ul, 16);
1564 else {
1565 MXFStreamContext *sc = s->streams[0]->priv_data;
1566 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1567 }
1568 put_byte(pb, 0);
1569 put_be64(pb, 0);
1570 put_be64(pb, 0); // creation date/time stamp
1571
1572 put_byte(pb, 0x81); // SMPTE 12M time code
1573 time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1574 put_be32(pb, time_code);
1575 put_be32(pb, 0); // binary group data
1576 put_be64(pb, 0);
1577
1578 // write system metadata package set
1579 put_buffer(pb, system_metadata_package_set_key, 16);
1580 klv_encode_ber4_length(pb, 35);
1581 put_byte(pb, 0x83); // UMID
1582 put_be16(pb, 0x20);
1583 mxf_write_umid(s, 1);
1584 }
1585
1586 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1587 {
1588 MXFContext *mxf = s->priv_data;
1589 ByteIOContext *pb = s->pb;
1590 int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1591 (8*mxf->time_base.den); // frame size
1592 int pad;
1593
1594 packet_size += 16 + 4;
1595 packet_size += klv_fill_size(packet_size);
1596
1597 klv_encode_ber4_length(pb, pkt->size);
1598 put_buffer(pb, pkt->data, pkt->size);
1599
1600 // ensure CBR muxing by padding to correct video frame size
1601 pad = packet_size - pkt->size - 16 - 4;
1602 if (pad > 20) {
1603 put_buffer(s->pb, klv_fill_key, 16);
1604 pad -= 16 + 4;
1605 klv_encode_ber4_length(s->pb, pad);
1606 for (; pad; pad--)
1607 put_byte(s->pb, 0);
1608 assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1609 } else {
1610 av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1611 for (; pad > 0; pad--)
1612 put_byte(s->pb, 0);
1613 }
1614 }
1615
1616 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1617 {
1618 MXFContext *mxf = s->priv_data;
1619 ByteIOContext *pb = s->pb;
1620 int frame_size = pkt->size / st->codec->block_align;
1621 uint8_t *samples = pkt->data;
1622 uint8_t *end = pkt->data + pkt->size;
1623 int i;
1624
1625 klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1626
1627 put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1628 put_le16(pb, frame_size);
1629 put_byte(pb, (1<<st->codec->channels)-1);
1630
1631 while (samples < end) {
1632 for (i = 0; i < st->codec->channels; i++) {
1633 uint32_t sample;
1634 if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1635 sample = AV_RL24(samples)<< 4;
1636 samples += 3;
1637 } else {
1638 sample = AV_RL16(samples)<<12;
1639 samples += 2;
1640 }
1641 put_le32(pb, sample | i);
1642 }
1643 for (; i < 8; i++)
1644 put_le32(pb, i);
1645 }
1646 }
1647
1648 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1649 {
1650 MXFContext *mxf = s->priv_data;
1651 ByteIOContext *pb = s->pb;
1652 AVStream *st = s->streams[pkt->stream_index];
1653 MXFStreamContext *sc = st->priv_data;
1654 int flags = 0;
1655
1656 if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1657 mxf->index_entries = av_realloc(mxf->index_entries,
1658 (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1659 if (!mxf->index_entries) {
1660 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1661 return -1;
1662 }
1663 }
1664
1665 if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1666 if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1667 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1668 return -1;
1669 }
1670 }
1671
1672 if (!mxf->header_written) {
1673 if (mxf->edit_unit_byte_count) {
1674 mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1675 mxf_write_klv_fill(s);
1676 mxf_write_index_table_segment(s);
1677 } else {
1678 mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1679 }
1680 mxf->header_written = 1;
1681 }
1682
1683 if (st->index == 0) {
1684 if (!mxf->edit_unit_byte_count &&
1685 (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1686 !(flags & 0x33)) { // I frame, Gop start
1687 mxf_write_klv_fill(s);
1688 mxf_write_partition(s, 1, 2, body_partition_key, 0);
1689
1690 mxf_write_klv_fill(s);
1691 mxf_write_index_table_segment(s);
1692 }
1693
1694 mxf_write_klv_fill(s);
1695 mxf_write_system_item(s);
1696
1697 if (!mxf->edit_unit_byte_count) {
1698 mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1699 mxf->index_entries[mxf->edit_units_count].flags = flags;
1700 mxf->body_offset += KAG_SIZE; // size of system element
1701 }
1702 mxf->edit_units_count++;
1703 } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1704 mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1705 mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1706 }
1707
1708 mxf_write_klv_fill(s);
1709 put_buffer(pb, sc->track_essence_element_key, 16); // write key
1710 if (s->oformat == &mxf_d10_muxer) {
1711 if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1712 mxf_write_d10_video_packet(s, st, pkt);
1713 else
1714 mxf_write_d10_audio_packet(s, st, pkt);
1715 } else {
1716 klv_encode_ber4_length(pb, pkt->size); // write length
1717 put_buffer(pb, pkt->data, pkt->size);
1718 mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1719 }
1720
1721 put_flush_packet(pb);
1722
1723 return 0;
1724 }
1725
1726 static void mxf_write_random_index_pack(AVFormatContext *s)
1727 {
1728 MXFContext *mxf = s->priv_data;
1729 ByteIOContext *pb = s->pb;
1730 uint64_t pos = url_ftell(pb);
1731 int i;
1732
1733 put_buffer(pb, random_index_pack_key, 16);
1734 klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1735
1736 if (mxf->edit_unit_byte_count)
1737 put_be32(pb, 1); // BodySID of header partition
1738 else
1739 put_be32(pb, 0);
1740 put_be64(pb, 0); // offset of header partition
1741
1742 for (i = 0; i < mxf->body_partitions_count; i++) {
1743 put_be32(pb, 1); // BodySID
1744 put_be64(pb, mxf->body_partition_offset[i]);
1745 }
1746
1747 put_be32(pb, 0); // BodySID of footer partition
1748 put_be64(pb, mxf->footer_partition_offset);
1749
1750 put_be32(pb, url_ftell(pb) - pos + 4);
1751 }
1752
1753 static int mxf_write_footer(AVFormatContext *s)
1754 {
1755 MXFContext *mxf = s->priv_data;
1756 ByteIOContext *pb = s->pb;
1757
1758 mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1759
1760 mxf_write_klv_fill(s);
1761 mxf->footer_partition_offset = url_ftell(pb);
1762 if (mxf->edit_unit_byte_count) { // no need to repeat index
1763 mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1764 } else {
1765 mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1766
1767 mxf_write_klv_fill(s);
1768 mxf_write_index_table_segment(s);
1769 }
1770
1771 mxf_write_klv_fill(s);
1772 mxf_write_random_index_pack(s);
1773
1774 if (!url_is_streamed(s->pb)) {
1775 url_fseek(pb, 0, SEEK_SET);
1776 if (mxf->edit_unit_byte_count) {
1777 mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1778 mxf_write_klv_fill(s);
1779 mxf_write_index_table_segment(s);
1780 } else {
1781 mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1782 }
1783 }
1784
1785 put_flush_packet(pb);
1786
1787 ff_audio_interleave_close(s);
1788
1789 av_freep(&mxf->index_entries);
1790 av_freep(&mxf->body_partition_offset);
1791 av_freep(&mxf->timecode_track->priv_data);
1792 av_freep(&mxf->timecode_track);
1793
1794 mxf_free(s);
1795
1796 return 0;
1797 }
1798
1799 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1800 {
1801 AVPacketList *pktl;
1802 int stream_count = 0;
1803 int streams[MAX_STREAMS];
1804
1805 memset(streams, 0, sizeof(streams));
1806 pktl = s->packet_buffer;
1807 while (pktl) {
1808 //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1809 if (!streams[pktl->pkt.stream_index])
1810 stream_count++;
1811 streams[pktl->pkt.stream_index]++;
1812 pktl = pktl->next;
1813 }
1814
1815 if (stream_count && (s->nb_streams == stream_count || flush)) {
1816 pktl = s->packet_buffer;
1817 if (s->nb_streams != stream_count) {
1818 AVPacketList *last = NULL;
1819 // find last packet in edit unit
1820 while (pktl) {
1821 if (!stream_count || pktl->pkt.stream_index == 0)
1822 break;
1823 last = pktl;
1824 pktl = pktl->next;
1825 stream_count--;
1826 }
1827 // purge packet queue
1828 while (pktl) {
1829 AVPacketList *next = pktl->next;
1830 av_free_packet(&pktl->pkt);
1831 av_freep(&pktl);
1832 pktl = next;
1833 }
1834 if (last)
1835 last->next = NULL;
1836 else {
1837 s->packet_buffer = NULL;
1838 goto out;
1839 }
1840 pktl = s->packet_buffer;
1841 }
1842
1843 *out = pktl->pkt;
1844 //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1845 s->packet_buffer = pktl->next;
1846 av_freep(&pktl);
1847 return 1;
1848 } else {
1849 out:
1850 av_init_packet(out);
1851 return 0;
1852 }
1853 }
1854
1855 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1856 {
1857 MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
1858 MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1859
1860 return next->dts > pkt->dts ||
1861 (next->dts == pkt->dts && sc->order < sc2->order);
1862 }
1863
1864 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1865 {
1866 return ff_audio_rechunk_interleave(s, out, pkt, flush,
1867 mxf_interleave_get_packet, mxf_compare_timestamps);
1868 }
1869
1870 AVOutputFormat mxf_muxer = {
1871 "mxf",
1872 NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1873 "application/mxf",
1874 "mxf",
1875 sizeof(MXFContext),
1876 CODEC_ID_PCM_S16LE,
1877 CODEC_ID_MPEG2VIDEO,
1878 mxf_write_header,
1879 mxf_write_packet,
1880 mxf_write_footer,
1881 AVFMT_NOTIMESTAMPS,
1882 NULL,
1883 mxf_interleave,
1884 };
1885
1886 AVOutputFormat mxf_d10_muxer = {
1887 "mxf_d10",
1888 NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1889 "application/mxf",
1890 NULL,
1891 sizeof(MXFContext),
1892 CODEC_ID_PCM_S16LE,
1893 CODEC_ID_MPEG2VIDEO,
1894 mxf_write_header,
1895 mxf_write_packet,
1896 mxf_write_footer,
1897 AVFMT_NOTIMESTAMPS,
1898 NULL,
1899 mxf_interleave,
1900 };
ffmpeg Lagarith lossless decoder