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alacenc: add a fixed LPC coefficient mode as compression level 1. old
[FFMpeg-mirror/lagarith.git] / libavformat / mxfenc.c
blob8175a9b1cf5bbe34b807500d8d62e32eeb65a74f
1 /*
2 * MXF muxer
3 * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
4 * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /*
24 * References
25 * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
26 * SMPTE 377M MXF File Format Specifications
27 * SMPTE 379M MXF Generic Container
28 * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29 * SMPTE RP210: SMPTE Metadata Dictionary
30 * SMPTE RP224: Registry of SMPTE Universal Labels
31 */
32
33 //#define DEBUG
34
35 #include <math.h>
36 #include <time.h>
37
38 #include "libavutil/random_seed.h"
39 #include "libavcodec/bytestream.h"
40 #include "audiointerleave.h"
41 #include "avformat.h"
42 #include "mxf.h"
43
44 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
45 static const int PAL_samples_per_frame[] = { 1920, 0 };
46
47 AVOutputFormat mxf_d10_muxer;
48
49 #define EDIT_UNITS_PER_BODY 250
50 #define KAG_SIZE 512
51
52 typedef struct {
53 int local_tag;
54 UID uid;
55 } MXFLocalTagPair;
56
57 typedef struct {
58 uint8_t flags;
59 uint64_t offset;
60 unsigned slice_offset; ///< offset of audio slice
61 } MXFIndexEntry;
62
63 typedef struct {
64 AudioInterleaveContext aic;
65 UID track_essence_element_key;
66 int index; ///< index in mxf_essence_container_uls table
67 const UID *codec_ul;
68 int order; ///< interleaving order if dts are equal
69 int interlaced; ///< wether picture is interlaced
70 int temporal_reordering;
71 AVRational aspect_ratio; ///< display aspect ratio
72 int closed_gop; ///< gop is closed, used in mpeg-2 frame parsing
73 } MXFStreamContext;
74
75 typedef struct {
76 UID container_ul;
77 UID element_ul;
78 UID codec_ul;
79 void (*write_desc)();
80 } MXFContainerEssenceEntry;
81
82 static const struct {
83 enum CodecID id;
84 int index;
85 } mxf_essence_mappings[] = {
86 { CODEC_ID_MPEG2VIDEO, 0 },
87 { CODEC_ID_PCM_S24LE, 1 },
88 { CODEC_ID_PCM_S16LE, 1 },
89 { 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 { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
302 // Wave Audio Essence Descriptor
303 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
304 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
305 };
306
307 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
308 {
309 put_buffer(pb, uuid_base, 12);
310 put_be16(pb, type);
311 put_be16(pb, value);
312 }
313
314 static void mxf_write_umid(AVFormatContext *s, int type)
315 {
316 MXFContext *mxf = s->priv_data;
317 put_buffer(s->pb, umid_ul, 13);
318 put_be24(s->pb, mxf->instance_number);
319 put_buffer(s->pb, mxf->umid, 15);
320 put_byte(s->pb, type);
321 }
322
323 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
324 {
325 put_be32(pb, ref_count);
326 put_be32(pb, 16);
327 }
328
329 static int klv_ber_length(uint64_t len)
330 {
331 if (len < 128)
332 return 1;
333 else
334 return (av_log2(len) >> 3) + 2;
335 }
336
337 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
338 {
339 // Determine the best BER size
340 int size;
341 if (len < 128) {
342 //short form
343 put_byte(pb, len);
344 return 1;
345 }
346
347 size = (av_log2(len) >> 3) + 1;
348
349 // long form
350 put_byte(pb, 0x80 + size);
351 while(size) {
352 size--;
353 put_byte(pb, len >> 8 * size & 0xff);
354 }
355 return 0;
356 }
357
358 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
359 {
360 put_byte(pb, 0x80 + 3);
361 put_be24(pb, len);
362 }
363
364 /*
365 * Get essence container ul index
366 */
367 static int mxf_get_essence_container_ul_index(enum CodecID id)
368 {
369 int i;
370 for (i = 0; mxf_essence_mappings[i].id; i++)
371 if (mxf_essence_mappings[i].id == id)
372 return mxf_essence_mappings[i].index;
373 return -1;
374 }
375
376 static void mxf_write_primer_pack(AVFormatContext *s)
377 {
378 ByteIOContext *pb = s->pb;
379 int local_tag_number, i = 0;
380
381 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
382
383 put_buffer(pb, primer_pack_key, 16);
384 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
385
386 put_be32(pb, local_tag_number); // local_tag num
387 put_be32(pb, 18); // item size, always 18 according to the specs
388
389 for (i = 0; i < local_tag_number; i++) {
390 put_be16(pb, mxf_local_tag_batch[i].local_tag);
391 put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
392 }
393 }
394
395 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
396 {
397 put_be16(pb, tag);
398 put_be16(pb, size);
399 }
400
401 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
402 {
403 put_buffer(pb, header_metadata_key, 13);
404 put_be24(pb, value);
405 }
406
407 static void mxf_free(AVFormatContext *s)
408 {
409 int i;
410
411 for (i = 0; i < s->nb_streams; i++) {
412 AVStream *st = s->streams[i];
413 av_freep(&st->priv_data);
414 }
415 }
416
417 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
418 {
419 const MXFCodecUL *uls = ff_mxf_data_definition_uls;
420 while (uls->uid[0]) {
421 if (type == uls->id)
422 break;
423 uls++;
424 }
425 return uls;
426 }
427
428 static void mxf_write_essence_container_refs(AVFormatContext *s)
429 {
430 MXFContext *c = s->priv_data;
431 ByteIOContext *pb = s->pb;
432 int i;
433
434 mxf_write_refs_count(pb, c->essence_container_count);
435 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
436 for (i = 0; i < c->essence_container_count; i++) {
437 MXFStreamContext *sc = s->streams[i]->priv_data;
438 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
439 }
440 }
441
442 static void mxf_write_preface(AVFormatContext *s)
443 {
444 MXFContext *mxf = s->priv_data;
445 ByteIOContext *pb = s->pb;
446
447 mxf_write_metadata_key(pb, 0x012f00);
448 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
449 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
450
451 // write preface set uid
452 mxf_write_local_tag(pb, 16, 0x3C0A);
453 mxf_write_uuid(pb, Preface, 0);
454 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
455
456 // last modified date
457 mxf_write_local_tag(pb, 8, 0x3B02);
458 put_be64(pb, mxf->timestamp);
459
460 // write version
461 mxf_write_local_tag(pb, 2, 0x3B05);
462 put_be16(pb, 258); // v1.2
463
464 // write identification_refs
465 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
466 mxf_write_refs_count(pb, 1);
467 mxf_write_uuid(pb, Identification, 0);
468
469 // write content_storage_refs
470 mxf_write_local_tag(pb, 16, 0x3B03);
471 mxf_write_uuid(pb, ContentStorage, 0);
472
473 // operational pattern
474 mxf_write_local_tag(pb, 16, 0x3B09);
475 put_buffer(pb, op1a_ul, 16);
476
477 // write essence_container_refs
478 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
479 mxf_write_essence_container_refs(s);
480
481 // write dm_scheme_refs
482 mxf_write_local_tag(pb, 8, 0x3B0B);
483 put_be64(pb, 0);
484 }
485
486 /*
487 * Write a local tag containing an ascii string as utf-16
488 */
489 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
490 {
491 int i, size = strlen(value);
492 mxf_write_local_tag(pb, size*2, tag);
493 for (i = 0; i < size; i++)
494 put_be16(pb, value[i]);
495 }
496
497 static void mxf_write_identification(AVFormatContext *s)
498 {
499 MXFContext *mxf = s->priv_data;
500 ByteIOContext *pb = s->pb;
501 const char *company = "FFmpeg";
502 const char *product = "OP1a Muxer";
503 const char *version;
504 int length;
505
506 mxf_write_metadata_key(pb, 0x013000);
507 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
508
509 version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
510 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
511 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
512 klv_encode_ber_length(pb, length);
513
514 // write uid
515 mxf_write_local_tag(pb, 16, 0x3C0A);
516 mxf_write_uuid(pb, Identification, 0);
517 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
518
519 // write generation uid
520 mxf_write_local_tag(pb, 16, 0x3C09);
521 mxf_write_uuid(pb, Identification, 1);
522
523 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
524 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
525 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
526
527 // write product uid
528 mxf_write_local_tag(pb, 16, 0x3C05);
529 mxf_write_uuid(pb, Identification, 2);
530
531 // modification date
532 mxf_write_local_tag(pb, 8, 0x3C06);
533 put_be64(pb, mxf->timestamp);
534 }
535
536 static void mxf_write_content_storage(AVFormatContext *s)
537 {
538 ByteIOContext *pb = s->pb;
539
540 mxf_write_metadata_key(pb, 0x011800);
541 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
542 klv_encode_ber_length(pb, 92);
543
544 // write uid
545 mxf_write_local_tag(pb, 16, 0x3C0A);
546 mxf_write_uuid(pb, ContentStorage, 0);
547 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
548
549 // write package reference
550 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
551 mxf_write_refs_count(pb, 2);
552 mxf_write_uuid(pb, MaterialPackage, 0);
553 mxf_write_uuid(pb, SourcePackage, 0);
554
555 // write essence container data
556 mxf_write_local_tag(pb, 8 + 16, 0x1902);
557 mxf_write_refs_count(pb, 1);
558 mxf_write_uuid(pb, EssenceContainerData, 0);
559 }
560
561 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
562 {
563 MXFContext *mxf = s->priv_data;
564 ByteIOContext *pb = s->pb;
565 MXFStreamContext *sc = st->priv_data;
566
567 mxf_write_metadata_key(pb, 0x013b00);
568 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
569 klv_encode_ber_length(pb, 80);
570
571 // write track uid
572 mxf_write_local_tag(pb, 16, 0x3C0A);
573 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
574 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
575
576 // write track id
577 mxf_write_local_tag(pb, 4, 0x4801);
578 put_be32(pb, st->index+2);
579
580 // write track number
581 mxf_write_local_tag(pb, 4, 0x4804);
582 if (type == MaterialPackage)
583 put_be32(pb, 0); // track number of material package is 0
584 else
585 put_buffer(pb, sc->track_essence_element_key + 12, 4);
586
587 mxf_write_local_tag(pb, 8, 0x4B01);
588 put_be32(pb, mxf->time_base.den);
589 put_be32(pb, mxf->time_base.num);
590
591 // write origin
592 mxf_write_local_tag(pb, 8, 0x4B02);
593 put_be64(pb, 0);
594
595 // write sequence refs
596 mxf_write_local_tag(pb, 16, 0x4803);
597 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
598 }
599
600 static const uint8_t smpte_12m_timecode_track_data_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x01,0x01,0x00,0x00,0x00 };
601
602 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
603 {
604 MXFContext *mxf = s->priv_data;
605 ByteIOContext *pb = s->pb;
606
607 // find data define uls
608 mxf_write_local_tag(pb, 16, 0x0201);
609 if (st == mxf->timecode_track)
610 put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
611 else {
612 const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
613 put_buffer(pb, data_def_ul->uid, 16);
614 }
615
616 // write duration
617 mxf_write_local_tag(pb, 8, 0x0202);
618 put_be64(pb, mxf->duration);
619 }
620
621 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
622 {
623 MXFContext *mxf = s->priv_data;
624 ByteIOContext *pb = s->pb;
625 enum MXFMetadataSetType component;
626
627 mxf_write_metadata_key(pb, 0x010f00);
628 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
629 klv_encode_ber_length(pb, 80);
630
631 mxf_write_local_tag(pb, 16, 0x3C0A);
632 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
633
634 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
635 mxf_write_common_fields(s, st);
636
637 // write structural component
638 mxf_write_local_tag(pb, 16 + 8, 0x1001);
639 mxf_write_refs_count(pb, 1);
640 if (st == mxf->timecode_track)
641 component = TimecodeComponent;
642 else
643 component = SourceClip;
644 if (type == SourcePackage)
645 component += TypeBottom;
646 mxf_write_uuid(pb, component, st->index);
647 }
648
649 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
650 {
651 MXFContext *mxf = s->priv_data;
652 ByteIOContext *pb = s->pb;
653
654 mxf_write_metadata_key(pb, 0x011400);
655 klv_encode_ber_length(pb, 75);
656
657 // UID
658 mxf_write_local_tag(pb, 16, 0x3C0A);
659 mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
660 TimecodeComponent + TypeBottom, st->index);
661
662 mxf_write_common_fields(s, st);
663
664 // Start Time Code
665 mxf_write_local_tag(pb, 8, 0x1501);
666 put_be64(pb, mxf->timecode_start);
667
668 // Rounded Time Code Base
669 mxf_write_local_tag(pb, 2, 0x1502);
670 put_be16(pb, mxf->timecode_base);
671
672 // Drop Frame
673 mxf_write_local_tag(pb, 1, 0x1503);
674 put_byte(pb, mxf->timecode_drop_frame);
675 }
676
677 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
678 {
679 ByteIOContext *pb = s->pb;
680 int i;
681
682 mxf_write_metadata_key(pb, 0x011100);
683 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
684 klv_encode_ber_length(pb, 108);
685
686 // write uid
687 mxf_write_local_tag(pb, 16, 0x3C0A);
688 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
689
690 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
691 mxf_write_common_fields(s, st);
692
693 // write start_position
694 mxf_write_local_tag(pb, 8, 0x1201);
695 put_be64(pb, 0);
696
697 // write source package uid, end of the reference
698 mxf_write_local_tag(pb, 32, 0x1101);
699 if (type == SourcePackage) {
700 for (i = 0; i < 4; i++)
701 put_be64(pb, 0);
702 } else
703 mxf_write_umid(s, 1);
704
705 // write source track id
706 mxf_write_local_tag(pb, 4, 0x1102);
707 if (type == SourcePackage)
708 put_be32(pb, 0);
709 else
710 put_be32(pb, st->index+2);
711 }
712
713 static void mxf_write_multi_descriptor(AVFormatContext *s)
714 {
715 MXFContext *mxf = s->priv_data;
716 ByteIOContext *pb = s->pb;
717 const uint8_t *ul;
718 int i;
719
720 mxf_write_metadata_key(pb, 0x014400);
721 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
722 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
723
724 mxf_write_local_tag(pb, 16, 0x3C0A);
725 mxf_write_uuid(pb, MultipleDescriptor, 0);
726 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
727
728 // write sample rate
729 mxf_write_local_tag(pb, 8, 0x3001);
730 put_be32(pb, mxf->time_base.den);
731 put_be32(pb, mxf->time_base.num);
732
733 // write essence container ul
734 mxf_write_local_tag(pb, 16, 0x3004);
735 if (mxf->essence_container_count > 1)
736 ul = multiple_desc_ul;
737 else {
738 MXFStreamContext *sc = s->streams[0]->priv_data;
739 ul = mxf_essence_container_uls[sc->index].container_ul;
740 }
741 put_buffer(pb, ul, 16);
742
743 // write sub descriptor refs
744 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
745 mxf_write_refs_count(pb, s->nb_streams);
746 for (i = 0; i < s->nb_streams; i++)
747 mxf_write_uuid(pb, SubDescriptor, i);
748 }
749
750 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
751 {
752 MXFContext *mxf = s->priv_data;
753 MXFStreamContext *sc = st->priv_data;
754 ByteIOContext *pb = s->pb;
755
756 put_buffer(pb, key, 16);
757 klv_encode_ber4_length(pb, size+20+8+12+20);
758
759 mxf_write_local_tag(pb, 16, 0x3C0A);
760 mxf_write_uuid(pb, SubDescriptor, st->index);
761
762 mxf_write_local_tag(pb, 4, 0x3006);
763 put_be32(pb, st->index+2);
764
765 mxf_write_local_tag(pb, 8, 0x3001);
766 put_be32(pb, mxf->time_base.den);
767 put_be32(pb, mxf->time_base.num);
768
769 mxf_write_local_tag(pb, 16, 0x3004);
770 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
771 }
772
773 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
774 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
775 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
776 static const UID mxf_cdci_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
777 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
778
779 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
780 {
781 MXFStreamContext *sc = st->priv_data;
782 ByteIOContext *pb = s->pb;
783 int stored_height = (st->codec->height+15)/16*16;
784 int display_height;
785 int f1, f2;
786
787 mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
788
789 mxf_write_local_tag(pb, 4, 0x3203);
790 put_be32(pb, st->codec->width);
791
792 mxf_write_local_tag(pb, 4, 0x3202);
793 put_be32(pb, stored_height>>sc->interlaced);
794
795 mxf_write_local_tag(pb, 4, 0x3209);
796 put_be32(pb, st->codec->width);
797
798 if (st->codec->height == 608) // PAL + VBI
799 display_height = 576;
800 else if (st->codec->height == 512) // NTSC + VBI
801 display_height = 486;
802 else
803 display_height = st->codec->height;
804
805 mxf_write_local_tag(pb, 4, 0x3208);
806 put_be32(pb, display_height>>sc->interlaced);
807
808 // component depth
809 mxf_write_local_tag(pb, 4, 0x3301);
810 put_be32(pb, 8);
811
812 // horizontal subsampling
813 mxf_write_local_tag(pb, 4, 0x3302);
814 put_be32(pb, 2);
815
816 // frame layout
817 mxf_write_local_tag(pb, 1, 0x320C);
818 put_byte(pb, sc->interlaced);
819
820 // video line map
821 switch (st->codec->height) {
822 case 576: f1 = 23; f2 = 336; break;
823 case 608: f1 = 7; f2 = 320; break;
824 case 480: f1 = 20; f2 = 283; break;
825 case 512: f1 = 7; f2 = 270; break;
826 case 720: f1 = 26; f2 = 0; break; // progressive
827 case 1080: f1 = 21; f2 = 584; break;
828 default: f1 = 0; f2 = 0; break;
829 }
830
831 if (!sc->interlaced) {
832 f2 = 0;
833 f1 *= 2;
834 }
835
836 mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
837 put_be32(pb, sc->interlaced ? 2 : 1);
838 put_be32(pb, 4);
839 put_be32(pb, f1);
840 if (sc->interlaced)
841 put_be32(pb, f2);
842
843 mxf_write_local_tag(pb, 8, 0x320E);
844 put_be32(pb, sc->aspect_ratio.num);
845 put_be32(pb, sc->aspect_ratio.den);
846
847 mxf_write_local_tag(pb, 16, 0x3201);
848 put_buffer(pb, *sc->codec_ul, 16);
849 }
850
851 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
852 {
853 mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
854 }
855
856 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
857 {
858 ByteIOContext *pb = s->pb;
859 int profile_and_level = (st->codec->profile<<4) | st->codec->level;
860
861 mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
862
863 // bit rate
864 mxf_write_local_tag(pb, 4, 0x8000);
865 put_be32(pb, st->codec->bit_rate);
866
867 // profile and level
868 mxf_write_local_tag(pb, 1, 0x8007);
869 if (!st->codec->profile)
870 profile_and_level |= 0x80; // escape bit
871 put_byte(pb, profile_and_level);
872 }
873
874 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
875 {
876 ByteIOContext *pb = s->pb;
877
878 mxf_write_generic_desc(s, st, key, size+5+12+8+8);
879
880 // audio locked
881 mxf_write_local_tag(pb, 1, 0x3D02);
882 put_byte(pb, 1);
883
884 // write audio sampling rate
885 mxf_write_local_tag(pb, 8, 0x3D03);
886 put_be32(pb, st->codec->sample_rate);
887 put_be32(pb, 1);
888
889 mxf_write_local_tag(pb, 4, 0x3D07);
890 put_be32(pb, st->codec->channels);
891
892 mxf_write_local_tag(pb, 4, 0x3D01);
893 put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
894 }
895
896 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
897 {
898 ByteIOContext *pb = s->pb;
899
900 mxf_write_generic_sound_common(s, st, key, size+6+8);
901
902 mxf_write_local_tag(pb, 2, 0x3D0A);
903 put_be16(pb, st->codec->block_align);
904
905 // avg bytes per sec
906 mxf_write_local_tag(pb, 4, 0x3D09);
907 put_be32(pb, st->codec->block_align*st->codec->sample_rate);
908 }
909
910 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
911 {
912 mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
913 }
914
915 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
916 {
917 mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
918 }
919
920 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
921 {
922 mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
923 }
924
925 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
926 {
927 MXFContext *mxf = s->priv_data;
928 ByteIOContext *pb = s->pb;
929 int i, track_count = s->nb_streams+1;
930
931 if (type == MaterialPackage) {
932 mxf_write_metadata_key(pb, 0x013600);
933 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
934 klv_encode_ber_length(pb, 92 + 16*track_count);
935 } else {
936 mxf_write_metadata_key(pb, 0x013700);
937 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
938 klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
939 }
940
941 // write uid
942 mxf_write_local_tag(pb, 16, 0x3C0A);
943 mxf_write_uuid(pb, type, 0);
944 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
945 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
946
947 // write package umid
948 mxf_write_local_tag(pb, 32, 0x4401);
949 mxf_write_umid(s, type == SourcePackage);
950 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
951
952 // package creation date
953 mxf_write_local_tag(pb, 8, 0x4405);
954 put_be64(pb, mxf->timestamp);
955
956 // package modified date
957 mxf_write_local_tag(pb, 8, 0x4404);
958 put_be64(pb, mxf->timestamp);
959
960 // write track refs
961 mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
962 mxf_write_refs_count(pb, track_count);
963 mxf_write_uuid(pb, type == MaterialPackage ? Track :
964 Track + TypeBottom, -1); // timecode track
965 for (i = 0; i < s->nb_streams; i++)
966 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
967
968 // write multiple descriptor reference
969 if (type == SourcePackage) {
970 mxf_write_local_tag(pb, 16, 0x4701);
971 if (s->nb_streams > 1) {
972 mxf_write_uuid(pb, MultipleDescriptor, 0);
973 mxf_write_multi_descriptor(s);
974 } else
975 mxf_write_uuid(pb, SubDescriptor, 0);
976 }
977
978 // write timecode track
979 mxf_write_track(s, mxf->timecode_track, type);
980 mxf_write_sequence(s, mxf->timecode_track, type);
981 mxf_write_timecode_component(s, mxf->timecode_track, type);
982
983 for (i = 0; i < s->nb_streams; i++) {
984 AVStream *st = s->streams[i];
985 mxf_write_track(s, st, type);
986 mxf_write_sequence(s, st, type);
987 mxf_write_structural_component(s, st, type);
988
989 if (type == SourcePackage) {
990 MXFStreamContext *sc = st->priv_data;
991 mxf_essence_container_uls[sc->index].write_desc(s, st);
992 }
993 }
994 }
995
996 static int mxf_write_essence_container_data(AVFormatContext *s)
997 {
998 ByteIOContext *pb = s->pb;
999
1000 mxf_write_metadata_key(pb, 0x012300);
1001 klv_encode_ber_length(pb, 72);
1002
1003 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1004 mxf_write_uuid(pb, EssenceContainerData, 0);
1005
1006 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1007 mxf_write_umid(s, 1);
1008
1009 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1010 put_be32(pb, 1);
1011
1012 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1013 put_be32(pb, 2);
1014
1015 return 0;
1016 }
1017
1018 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1019 {
1020 mxf_write_preface(s);
1021 mxf_write_identification(s);
1022 mxf_write_content_storage(s);
1023 mxf_write_package(s, MaterialPackage);
1024 mxf_write_package(s, SourcePackage);
1025 mxf_write_essence_container_data(s);
1026 return 0;
1027 }
1028
1029 static unsigned klv_fill_size(uint64_t size)
1030 {
1031 unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1032 if (pad < 20) // smallest fill item possible
1033 return pad + KAG_SIZE;
1034 else
1035 return pad & (KAG_SIZE-1);
1036 }
1037
1038 static void mxf_write_index_table_segment(AVFormatContext *s)
1039 {
1040 MXFContext *mxf = s->priv_data;
1041 ByteIOContext *pb = s->pb;
1042 int i, j;
1043 int temporal_reordering = 0;
1044 int key_index = mxf->last_key_index;
1045
1046 av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1047
1048 if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1049 return;
1050
1051 put_buffer(pb, index_table_segment_key, 16);
1052
1053 if (mxf->edit_unit_byte_count) {
1054 klv_encode_ber_length(pb, 80);
1055 } else {
1056 klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1057 12+mxf->edit_units_count*(11+mxf->slice_count*4));
1058 }
1059
1060 // instance id
1061 mxf_write_local_tag(pb, 16, 0x3C0A);
1062 mxf_write_uuid(pb, IndexTableSegment, 0);
1063
1064 // index edit rate
1065 mxf_write_local_tag(pb, 8, 0x3F0B);
1066 put_be32(pb, mxf->time_base.den);
1067 put_be32(pb, mxf->time_base.num);
1068
1069 // index start position
1070 mxf_write_local_tag(pb, 8, 0x3F0C);
1071 put_be64(pb, mxf->last_indexed_edit_unit);
1072
1073 // index duration
1074 mxf_write_local_tag(pb, 8, 0x3F0D);
1075 if (mxf->edit_unit_byte_count)
1076 put_be64(pb, 0); // index table covers whole container
1077 else
1078 put_be64(pb, mxf->edit_units_count);
1079
1080 // edit unit byte count
1081 mxf_write_local_tag(pb, 4, 0x3F05);
1082 put_be32(pb, mxf->edit_unit_byte_count);
1083
1084 // index sid
1085 mxf_write_local_tag(pb, 4, 0x3F06);
1086 put_be32(pb, 2);
1087
1088 // body sid
1089 mxf_write_local_tag(pb, 4, 0x3F07);
1090 put_be32(pb, 1);
1091
1092 if (!mxf->edit_unit_byte_count) {
1093 // real slice count - 1
1094 mxf_write_local_tag(pb, 1, 0x3F08);
1095 put_byte(pb, mxf->slice_count);
1096
1097 // delta entry array
1098 mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1099 put_be32(pb, s->nb_streams+1); // num of entries
1100 put_be32(pb, 6); // size of one entry
1101 // write system item delta entry
1102 put_byte(pb, 0);
1103 put_byte(pb, 0); // slice entry
1104 put_be32(pb, 0); // element delta
1105 for (i = 0; i < s->nb_streams; i++) {
1106 AVStream *st = s->streams[i];
1107 MXFStreamContext *sc = st->priv_data;
1108 put_byte(pb, sc->temporal_reordering);
1109 if (sc->temporal_reordering)
1110 temporal_reordering = 1;
1111 if (i == 0) { // video track
1112 put_byte(pb, 0); // slice number
1113 put_be32(pb, KAG_SIZE); // system item size including klv fill
1114 } else { // audio track
1115 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1116 audio_frame_size += klv_fill_size(audio_frame_size);
1117 put_byte(pb, 1);
1118 put_be32(pb, (i-1)*audio_frame_size); // element delta
1119 }
1120 }
1121
1122 mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1123 put_be32(pb, mxf->edit_units_count); // num of entries
1124 put_be32(pb, 11+mxf->slice_count*4); // size of one entry
1125 for (i = 0; i < mxf->edit_units_count; i++) {
1126 int temporal_offset = 0;
1127 if (temporal_reordering) {
1128 for (j = i+1; j < mxf->edit_units_count; j++) {
1129 temporal_offset++;
1130 if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1131 // next is not b, so is reordered
1132 if (!(mxf->index_entries[i+1].flags & 0x10)) {
1133 if ((mxf->index_entries[i].flags & 0x11) == 0) // I frame
1134 temporal_offset = 0;
1135 else
1136 temporal_offset = -temporal_offset;
1137 }
1138 break;
1139 }
1140 }
1141 }
1142 put_byte(pb, temporal_offset);
1143
1144 if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1145 if (mxf->index_entries[i].flags & 0x40 && // seq header
1146 (!temporal_reordering || !temporal_offset))
1147 mxf->index_entries[i].flags |= 0x80; // random access
1148 mxf->last_key_index = key_index;
1149 key_index = i;
1150 }
1151 if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1152 put_byte(pb, mxf->last_key_index - i);
1153 } else {
1154 put_byte(pb, key_index - i); // key frame offset
1155 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1156 mxf->last_key_index = key_index;
1157 }
1158 put_byte(pb, mxf->index_entries[i].flags);
1159 // stream offset
1160 put_be64(pb, mxf->index_entries[i].offset);
1161 if (s->nb_streams > 1)
1162 put_be32(pb, mxf->index_entries[i].slice_offset);
1163 }
1164
1165 mxf->last_key_index = key_index - mxf->edit_units_count;
1166 mxf->last_indexed_edit_unit += mxf->edit_units_count;
1167 mxf->edit_units_count = 0;
1168 }
1169 }
1170
1171 static void mxf_write_klv_fill(AVFormatContext *s)
1172 {
1173 unsigned pad = klv_fill_size(url_ftell(s->pb));
1174 if (pad) {
1175 put_buffer(s->pb, klv_fill_key, 16);
1176 pad -= 16 + 4;
1177 klv_encode_ber4_length(s->pb, pad);
1178 for (; pad; pad--)
1179 put_byte(s->pb, 0);
1180 assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1181 }
1182 }
1183
1184 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1185 int indexsid,
1186 const uint8_t *key, int write_metadata)
1187 {
1188 MXFContext *mxf = s->priv_data;
1189 ByteIOContext *pb = s->pb;
1190 int64_t header_byte_count_offset;
1191 unsigned index_byte_count = 0;
1192 uint64_t partition_offset = url_ftell(pb);
1193
1194 if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1195 index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1196 12+mxf->edit_units_count*(11+mxf->slice_count*4);
1197 else if (mxf->edit_unit_byte_count && indexsid)
1198 index_byte_count = 80;
1199
1200 if (index_byte_count) {
1201 // add encoded ber length
1202 index_byte_count += 16 + klv_ber_length(index_byte_count);
1203 index_byte_count += klv_fill_size(index_byte_count);
1204 }
1205
1206 if (!memcmp(key, body_partition_key, 16)) {
1207 mxf->body_partition_offset =
1208 av_realloc(mxf->body_partition_offset,
1209 (mxf->body_partitions_count+1)*
1210 sizeof(*mxf->body_partition_offset));
1211 mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1212 }
1213
1214 // write klv
1215 put_buffer(pb, key, 16);
1216 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1217
1218 // write partition value
1219 put_be16(pb, 1); // majorVersion
1220 put_be16(pb, 2); // minorVersion
1221 put_be32(pb, KAG_SIZE); // KAGSize
1222
1223 put_be64(pb, partition_offset); // ThisPartition
1224
1225 if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1226 put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1227 else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1228 put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1229 else
1230 put_be64(pb, 0);
1231
1232 put_be64(pb, mxf->footer_partition_offset); // footerPartition
1233
1234 // set offset
1235 header_byte_count_offset = url_ftell(pb);
1236 put_be64(pb, 0); // headerByteCount, update later
1237
1238 // indexTable
1239 put_be64(pb, index_byte_count); // indexByteCount
1240 put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1241
1242 // BodyOffset
1243 if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1244 put_be64(pb, mxf->body_offset);
1245 } else
1246 put_be64(pb, 0);
1247
1248 put_be32(pb, bodysid); // bodySID
1249
1250 // operational pattern
1251 put_buffer(pb, op1a_ul, 16);
1252
1253 // essence container
1254 mxf_write_essence_container_refs(s);
1255
1256 if (write_metadata) {
1257 // mark the start of the headermetadata and calculate metadata size
1258 int64_t pos, start;
1259 unsigned header_byte_count;
1260
1261 mxf_write_klv_fill(s);
1262 start = url_ftell(s->pb);
1263 mxf_write_primer_pack(s);
1264 mxf_write_header_metadata_sets(s);
1265 pos = url_ftell(s->pb);
1266 header_byte_count = pos - start + klv_fill_size(pos);
1267
1268 // update header_byte_count
1269 url_fseek(pb, header_byte_count_offset, SEEK_SET);
1270 put_be64(pb, header_byte_count);
1271 url_fseek(pb, pos, SEEK_SET);
1272 }
1273
1274 put_flush_packet(pb);
1275 }
1276
1277 static const UID mxf_mpeg2_codec_uls[] = {
1278 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1279 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1280 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1281 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1282 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1283 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1284 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1285 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1286 };
1287
1288 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1289 {
1290 int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1291
1292 if (avctx->profile == 4) { // Main
1293 if (avctx->level == 8) // Main
1294 return &mxf_mpeg2_codec_uls[0+long_gop];
1295 else if (avctx->level == 4) // High
1296 return &mxf_mpeg2_codec_uls[4+long_gop];
1297 } else if (avctx->profile == 0) { // 422
1298 if (avctx->level == 5) // Main
1299 return &mxf_mpeg2_codec_uls[2+long_gop];
1300 else if (avctx->level == 2) // High
1301 return &mxf_mpeg2_codec_uls[6+long_gop];
1302 }
1303 return NULL;
1304 }
1305
1306 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1307 {
1308 MXFStreamContext *sc = st->priv_data;
1309 MXFContext *mxf = s->priv_data;
1310 uint32_t c = -1;
1311 int i;
1312
1313 *flags = 0;
1314
1315 for(i = 0; i < pkt->size - 4; i++) {
1316 c = (c<<8) + pkt->data[i];
1317 if (c == 0x1b5) {
1318 if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1319 st->codec->profile = pkt->data[i+1] & 0x07;
1320 st->codec->level = pkt->data[i+2] >> 4;
1321 } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1322 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1323 break;
1324 }
1325 } else if (c == 0x1b8) { // gop
1326 if (pkt->data[i+4]>>6 & 0x01) { // closed
1327 sc->closed_gop = 1;
1328 if (*flags & 0x40) // sequence header present
1329 *flags |= 0x80; // random access
1330 }
1331 if (!mxf->header_written) {
1332 unsigned hours = (pkt->data[i+1]>>2) & 0x1f;
1333 unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1334 unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1335 unsigned frames = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1336 mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1337 mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1338 mxf->timecode_base + frames;
1339 if (mxf->timecode_drop_frame) {
1340 unsigned tminutes = 60 * hours + minutes;
1341 mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1342 }
1343 av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1344 hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1345 }
1346 } else if (c == 0x1b3) { // seq
1347 *flags |= 0x40;
1348 switch ((pkt->data[i+4]>>4) & 0xf) {
1349 case 2: sc->aspect_ratio = (AVRational){ 4, 3}; break;
1350 case 3: sc->aspect_ratio = (AVRational){ 16, 9}; break;
1351 case 4: sc->aspect_ratio = (AVRational){221,100}; break;
1352 default:
1353 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1354 st->codec->width, st->codec->height, 1024*1024);
1355 }
1356 } else if (c == 0x100) { // pic
1357 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1358 if (pict_type == 2) { // P frame
1359 *flags |= 0x22;
1360 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1361 } else if (pict_type == 3) { // B frame
1362 if (sc->closed_gop)
1363 *flags |= 0x13; // only backward prediction
1364 else
1365 *flags |= 0x33;
1366 sc->temporal_reordering = -1;
1367 } else if (!pict_type) {
1368 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1369 return 0;
1370 }
1371 }
1372 }
1373 if (s->oformat != &mxf_d10_muxer)
1374 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1375 return !!sc->codec_ul;
1376 }
1377
1378 static uint64_t mxf_parse_timestamp(time_t timestamp)
1379 {
1380 struct tm *time = gmtime(&timestamp);
1381 return (uint64_t)(time->tm_year+1900) << 48 |
1382 (uint64_t)(time->tm_mon+1) << 40 |
1383 (uint64_t) time->tm_mday << 32 |
1384 time->tm_hour << 24 |
1385 time->tm_min << 16 |
1386 time->tm_sec << 8;
1387 }
1388
1389 static void mxf_gen_umid(AVFormatContext *s)
1390 {
1391 MXFContext *mxf = s->priv_data;
1392 uint32_t seed = ff_random_get_seed();
1393 uint64_t umid = seed + 0x5294713400000000LL;
1394
1395 AV_WB64(mxf->umid , umid);
1396 AV_WB64(mxf->umid+8, umid>>8);
1397
1398 mxf->instance_number = seed;
1399 }
1400
1401 static int mxf_write_header(AVFormatContext *s)
1402 {
1403 MXFContext *mxf = s->priv_data;
1404 int i;
1405 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1406 const int *samples_per_frame = NULL;
1407
1408 if (!s->nb_streams)
1409 return -1;
1410
1411 for (i = 0; i < s->nb_streams; i++) {
1412 AVStream *st = s->streams[i];
1413 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1414 if (!sc)
1415 return AVERROR(ENOMEM);
1416 st->priv_data = sc;
1417
1418 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1419 if (i != 0) {
1420 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1421 return -1;
1422 }
1423 if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1424 samples_per_frame = PAL_samples_per_frame;
1425 mxf->time_base = (AVRational){ 1, 25 };
1426 mxf->timecode_base = 25;
1427 } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1428 samples_per_frame = NTSC_samples_per_frame;
1429 mxf->time_base = (AVRational){ 1001, 30000 };
1430 mxf->timecode_base = 30;
1431 } else {
1432 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1433 return -1;
1434 }
1435 av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1436 if (s->oformat == &mxf_d10_muxer) {
1437 if (st->codec->bit_rate == 50000000)
1438 if (mxf->time_base.den == 25) sc->index = 3;
1439 else sc->index = 5;
1440 else if (st->codec->bit_rate == 40000000)
1441 if (mxf->time_base.den == 25) sc->index = 7;
1442 else sc->index = 9;
1443 else if (st->codec->bit_rate == 30000000)
1444 if (mxf->time_base.den == 25) sc->index = 11;
1445 else sc->index = 13;
1446 else {
1447 av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1448 return -1;
1449 }
1450
1451 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1452 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1453 mxf->time_base.num / (8*mxf->time_base.den);
1454 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1455 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1456 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1457 }
1458 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1459 if (st->codec->sample_rate != 48000) {
1460 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1461 return -1;
1462 }
1463 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1464 if (s->oformat == &mxf_d10_muxer) {
1465 if (st->index != 1) {
1466 av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1467 return -1;
1468 }
1469 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1470 st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1471 av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1472 }
1473 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1474 } else
1475 mxf->slice_count = 1;
1476 }
1477
1478 if (!sc->index) {
1479 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1480 if (sc->index == -1) {
1481 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1482 "codec not currently supported in container\n", i);
1483 return -1;
1484 }
1485 }
1486
1487 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1488
1489 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1490 sc->track_essence_element_key[15] = present[sc->index];
1491 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1492
1493 if (!present[sc->index])
1494 mxf->essence_container_count++;
1495 present[sc->index]++;
1496 }
1497
1498 if (s->oformat == &mxf_d10_muxer) {
1499 mxf->essence_container_count = 1;
1500 }
1501
1502 if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
1503 mxf_gen_umid(s);
1504
1505 for (i = 0; i < s->nb_streams; i++) {
1506 MXFStreamContext *sc = s->streams[i]->priv_data;
1507 // update element count
1508 sc->track_essence_element_key[13] = present[sc->index];
1509 sc->order = AV_RB32(sc->track_essence_element_key+12);
1510 }
1511
1512 if (s->timestamp)
1513 mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1514 mxf->duration = -1;
1515
1516 mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1517 if (!mxf->timecode_track)
1518 return AVERROR(ENOMEM);
1519 mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1520 if (!mxf->timecode_track->priv_data)
1521 return AVERROR(ENOMEM);
1522 mxf->timecode_track->index = -1;
1523
1524 if (!samples_per_frame)
1525 samples_per_frame = PAL_samples_per_frame;
1526
1527 if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1528 return -1;
1529
1530 return 0;
1531 }
1532
1533 static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1534 static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 };
1535
1536 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1537 {
1538 return (0 << 31) | // color frame flag
1539 (0 << 30) | // drop frame flag
1540 ( ((frame % fps) / 10) << 28) | // tens of frames
1541 ( ((frame % fps) % 10) << 24) | // units of frames
1542 (0 << 23) | // field phase (NTSC), b0 (PAL)
1543 ((((frame / fps) % 60) / 10) << 20) | // tens of seconds
1544 ((((frame / fps) % 60) % 10) << 16) | // units of seconds
1545 (0 << 15) | // b0 (NTSC), b2 (PAL)
1546 ((((frame / (fps * 60)) % 60) / 10) << 12) | // tens of minutes
1547 ((((frame / (fps * 60)) % 60) % 10) << 8) | // units of minutes
1548 (0 << 7) | // b1
1549 (0 << 6) | // b2 (NSC), field phase (PAL)
1550 ((((frame / (fps * 3600) % 24)) / 10) << 4) | // tens of hours
1551 ( (frame / (fps * 3600) % 24)) % 10; // units of hours
1552 }
1553
1554 static void mxf_write_system_item(AVFormatContext *s)
1555 {
1556 MXFContext *mxf = s->priv_data;
1557 ByteIOContext *pb = s->pb;
1558 unsigned frame;
1559 uint32_t time_code;
1560
1561 frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1562
1563 // write system metadata pack
1564 put_buffer(pb, system_metadata_pack_key, 16);
1565 klv_encode_ber4_length(pb, 57);
1566 put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1567 put_byte(pb, 0x04); // content package rate
1568 put_byte(pb, 0x00); // content package type
1569 put_be16(pb, 0x00); // channel handle
1570 put_be16(pb, frame); // continuity count
1571 if (mxf->essence_container_count > 1)
1572 put_buffer(pb, multiple_desc_ul, 16);
1573 else {
1574 MXFStreamContext *sc = s->streams[0]->priv_data;
1575 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1576 }
1577 put_byte(pb, 0);
1578 put_be64(pb, 0);
1579 put_be64(pb, 0); // creation date/time stamp
1580
1581 put_byte(pb, 0x81); // SMPTE 12M time code
1582 time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1583 put_be32(pb, time_code);
1584 put_be32(pb, 0); // binary group data
1585 put_be64(pb, 0);
1586
1587 // write system metadata package set
1588 put_buffer(pb, system_metadata_package_set_key, 16);
1589 klv_encode_ber4_length(pb, 35);
1590 put_byte(pb, 0x83); // UMID
1591 put_be16(pb, 0x20);
1592 mxf_write_umid(s, 1);
1593 }
1594
1595 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1596 {
1597 MXFContext *mxf = s->priv_data;
1598 ByteIOContext *pb = s->pb;
1599 int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1600 (8*mxf->time_base.den); // frame size
1601 int pad;
1602
1603 packet_size += 16 + 4;
1604 packet_size += klv_fill_size(packet_size);
1605
1606 klv_encode_ber4_length(pb, pkt->size);
1607 put_buffer(pb, pkt->data, pkt->size);
1608
1609 // ensure CBR muxing by padding to correct video frame size
1610 pad = packet_size - pkt->size - 16 - 4;
1611 if (pad > 20) {
1612 put_buffer(s->pb, klv_fill_key, 16);
1613 pad -= 16 + 4;
1614 klv_encode_ber4_length(s->pb, pad);
1615 for (; pad; pad--)
1616 put_byte(s->pb, 0);
1617 assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1618 } else {
1619 av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1620 for (; pad > 0; pad--)
1621 put_byte(s->pb, 0);
1622 }
1623 }
1624
1625 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1626 {
1627 MXFContext *mxf = s->priv_data;
1628 ByteIOContext *pb = s->pb;
1629 int frame_size = pkt->size / st->codec->block_align;
1630 uint8_t *samples = pkt->data;
1631 uint8_t *end = pkt->data + pkt->size;
1632 int i;
1633
1634 klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1635
1636 put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1637 put_le16(pb, frame_size);
1638 put_byte(pb, (1<<st->codec->channels)-1);
1639
1640 while (samples < end) {
1641 for (i = 0; i < st->codec->channels; i++) {
1642 uint32_t sample;
1643 if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1644 sample = AV_RL24(samples)<< 4;
1645 samples += 3;
1646 } else {
1647 sample = AV_RL16(samples)<<12;
1648 samples += 2;
1649 }
1650 put_le32(pb, sample | i);
1651 }
1652 for (; i < 8; i++)
1653 put_le32(pb, i);
1654 }
1655 }
1656
1657 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1658 {
1659 MXFContext *mxf = s->priv_data;
1660 ByteIOContext *pb = s->pb;
1661 AVStream *st = s->streams[pkt->stream_index];
1662 MXFStreamContext *sc = st->priv_data;
1663 int flags = 0;
1664
1665 if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1666 mxf->index_entries = av_realloc(mxf->index_entries,
1667 (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1668 if (!mxf->index_entries) {
1669 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1670 return -1;
1671 }
1672 }
1673
1674 if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1675 if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1676 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1677 return -1;
1678 }
1679 }
1680
1681 if (!mxf->header_written) {
1682 if (mxf->edit_unit_byte_count) {
1683 mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1684 mxf_write_klv_fill(s);
1685 mxf_write_index_table_segment(s);
1686 } else {
1687 mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1688 }
1689 mxf->header_written = 1;
1690 }
1691
1692 if (st->index == 0) {
1693 if (!mxf->edit_unit_byte_count &&
1694 (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1695 !(flags & 0x33)) { // I frame, Gop start
1696 mxf_write_klv_fill(s);
1697 mxf_write_partition(s, 1, 2, body_partition_key, 0);
1698
1699 mxf_write_klv_fill(s);
1700 mxf_write_index_table_segment(s);
1701 }
1702
1703 mxf_write_klv_fill(s);
1704 mxf_write_system_item(s);
1705
1706 if (!mxf->edit_unit_byte_count) {
1707 mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1708 mxf->index_entries[mxf->edit_units_count].flags = flags;
1709 mxf->body_offset += KAG_SIZE; // size of system element
1710 }
1711 mxf->edit_units_count++;
1712 } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1713 mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1714 mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1715 }
1716
1717 mxf_write_klv_fill(s);
1718 put_buffer(pb, sc->track_essence_element_key, 16); // write key
1719 if (s->oformat == &mxf_d10_muxer) {
1720 if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1721 mxf_write_d10_video_packet(s, st, pkt);
1722 else
1723 mxf_write_d10_audio_packet(s, st, pkt);
1724 } else {
1725 klv_encode_ber4_length(pb, pkt->size); // write length
1726 put_buffer(pb, pkt->data, pkt->size);
1727 mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1728 }
1729
1730 put_flush_packet(pb);
1731
1732 return 0;
1733 }
1734
1735 static void mxf_write_random_index_pack(AVFormatContext *s)
1736 {
1737 MXFContext *mxf = s->priv_data;
1738 ByteIOContext *pb = s->pb;
1739 uint64_t pos = url_ftell(pb);
1740 int i;
1741
1742 put_buffer(pb, random_index_pack_key, 16);
1743 klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1744
1745 if (mxf->edit_unit_byte_count)
1746 put_be32(pb, 1); // BodySID of header partition
1747 else
1748 put_be32(pb, 0);
1749 put_be64(pb, 0); // offset of header partition
1750
1751 for (i = 0; i < mxf->body_partitions_count; i++) {
1752 put_be32(pb, 1); // BodySID
1753 put_be64(pb, mxf->body_partition_offset[i]);
1754 }
1755
1756 put_be32(pb, 0); // BodySID of footer partition
1757 put_be64(pb, mxf->footer_partition_offset);
1758
1759 put_be32(pb, url_ftell(pb) - pos + 4);
1760 }
1761
1762 static int mxf_write_footer(AVFormatContext *s)
1763 {
1764 MXFContext *mxf = s->priv_data;
1765 ByteIOContext *pb = s->pb;
1766
1767 mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1768
1769 mxf_write_klv_fill(s);
1770 mxf->footer_partition_offset = url_ftell(pb);
1771 if (mxf->edit_unit_byte_count) { // no need to repeat index
1772 mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1773 } else {
1774 mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1775
1776 mxf_write_klv_fill(s);
1777 mxf_write_index_table_segment(s);
1778 }
1779
1780 mxf_write_klv_fill(s);
1781 mxf_write_random_index_pack(s);
1782
1783 if (!url_is_streamed(s->pb)) {
1784 url_fseek(pb, 0, SEEK_SET);
1785 if (mxf->edit_unit_byte_count) {
1786 mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1787 mxf_write_klv_fill(s);
1788 mxf_write_index_table_segment(s);
1789 } else {
1790 mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1791 }
1792 }
1793
1794 put_flush_packet(pb);
1795
1796 ff_audio_interleave_close(s);
1797
1798 av_freep(&mxf->index_entries);
1799 av_freep(&mxf->body_partition_offset);
1800 av_freep(&mxf->timecode_track->priv_data);
1801 av_freep(&mxf->timecode_track);
1802
1803 mxf_free(s);
1804
1805 return 0;
1806 }
1807
1808 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1809 {
1810 AVPacketList *pktl;
1811 int stream_count = 0;
1812 int streams[MAX_STREAMS];
1813
1814 memset(streams, 0, sizeof(streams));
1815 pktl = s->packet_buffer;
1816 while (pktl) {
1817 //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1818 if (!streams[pktl->pkt.stream_index])
1819 stream_count++;
1820 streams[pktl->pkt.stream_index]++;
1821 pktl = pktl->next;
1822 }
1823
1824 if (stream_count && (s->nb_streams == stream_count || flush)) {
1825 pktl = s->packet_buffer;
1826 if (s->nb_streams != stream_count) {
1827 AVPacketList *last = NULL;
1828 // find last packet in edit unit
1829 while (pktl) {
1830 if (!stream_count || pktl->pkt.stream_index == 0)
1831 break;
1832 last = pktl;
1833 pktl = pktl->next;
1834 stream_count--;
1835 }
1836 // purge packet queue
1837 while (pktl) {
1838 AVPacketList *next = pktl->next;
1839
1840 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
1841 s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
1842 av_free_packet(&pktl->pkt);
1843 av_freep(&pktl);
1844 pktl = next;
1845 }
1846 if (last)
1847 last->next = NULL;
1848 else {
1849 s->packet_buffer = NULL;
1850 s->packet_buffer_end= NULL;
1851 goto out;
1852 }
1853 pktl = s->packet_buffer;
1854 }
1855
1856 *out = pktl->pkt;
1857 //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1858 s->packet_buffer = pktl->next;
1859 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
1860 s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
1861 if(!s->packet_buffer)
1862 s->packet_buffer_end= NULL;
1863 av_freep(&pktl);
1864 return 1;
1865 } else {
1866 out:
1867 av_init_packet(out);
1868 return 0;
1869 }
1870 }
1871
1872 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1873 {
1874 MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
1875 MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1876
1877 return next->dts > pkt->dts ||
1878 (next->dts == pkt->dts && sc->order < sc2->order);
1879 }
1880
1881 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1882 {
1883 return ff_audio_rechunk_interleave(s, out, pkt, flush,
1884 mxf_interleave_get_packet, mxf_compare_timestamps);
1885 }
1886
1887 AVOutputFormat mxf_muxer = {
1888 "mxf",
1889 NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1890 "application/mxf",
1891 "mxf",
1892 sizeof(MXFContext),
1893 CODEC_ID_PCM_S16LE,
1894 CODEC_ID_MPEG2VIDEO,
1895 mxf_write_header,
1896 mxf_write_packet,
1897 mxf_write_footer,
1898 AVFMT_NOTIMESTAMPS,
1899 NULL,
1900 mxf_interleave,
1901 };
1902
1903 AVOutputFormat mxf_d10_muxer = {
1904 "mxf_d10",
1905 NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1906 "application/mxf",
1907 NULL,
1908 sizeof(MXFContext),
1909 CODEC_ID_PCM_S16LE,
1910 CODEC_ID_MPEG2VIDEO,
1911 mxf_write_header,
1912 mxf_write_packet,
1913 mxf_write_footer,
1914 AVFMT_NOTIMESTAMPS,
1915 NULL,
1916 mxf_interleave,
1917 };
ffmpeg Lagarith lossless decoder