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>
6 * This file is part of FFmpeg.
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.
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.
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
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
38 #include "libavutil/fifo.h"
39 #include "libavcodec/bytestream.h"
40 #include "audiointerleave.h"
44 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
45 static const int PAL_samples_per_frame[] = { 1920, 0 };
47 #define MXF_INDEX_CLUSTER_SIZE 4096
58 unsigned slice_offset; ///< offset of audio slice
62 AudioInterleaveContext aic;
63 UID track_essence_element_key;
64 int index; ///< index in mxf_essence_container_uls table
67 int order; ///< interleaving order if dts are equal
68 int interlaced; ///< wether picture is interlaced
69 int temporal_reordering;
77 } MXFContainerEssenceEntry;
82 } mxf_essence_mappings[] = {
83 { CODEC_ID_MPEG2VIDEO, 0 },
84 { CODEC_ID_PCM_S24LE, 1 },
85 { CODEC_ID_PCM_S16LE, 1 },
89 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
90 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
91 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
93 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
94 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
95 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
96 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
97 mxf_write_mpegvideo_desc },
98 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
99 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
100 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
101 mxf_write_aes3_desc },
102 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
103 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
104 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
105 mxf_write_wav_desc },
106 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
107 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
108 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
112 typedef struct MXFContext {
113 int64_t footer_partition_offset;
114 int essence_container_count;
115 uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
116 AVRational time_base;
118 MXFIndexEntry *index_entries;
119 unsigned edit_units_count;
120 uint64_t timestamp; ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
121 uint8_t slice_count; ///< index slice count minus 1 (1 if no audio, 0 otherwise)
124 static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
125 static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
128 * complete key for operation pattern, partitions, and primer pack
130 static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
131 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
132 static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
133 static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
134 static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
135 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
136 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
137 static const uint8_t klv_fill_key[] = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
140 * partial key for header metadata
142 static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
143 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
146 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
148 static const MXFLocalTagPair mxf_local_tag_batch[] = {
150 { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
151 { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
152 { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
153 { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
154 { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
155 { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
156 { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
157 { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
159 { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
160 { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
161 { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
162 { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
163 { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
164 { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
166 { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
167 { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
168 // Essence Container Data
169 { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
170 { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
172 { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
173 { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
174 { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
175 { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
176 { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
178 { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
179 { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
180 { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
181 { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
182 { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
184 { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
185 { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
186 { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
188 { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
189 { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
190 { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
192 { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
193 { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
194 { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
195 { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
196 // Generic Picture Essence Descriptor
197 { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
198 { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
199 { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
200 { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
201 { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
202 { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
203 { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
204 { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
205 // CDCI Picture Essence Descriptor
206 { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
207 { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
208 // Generic Sound Essence Descriptor
209 { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
210 { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
211 { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
212 { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
213 { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
214 // Index Table Segment
215 { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
216 { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
217 { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
218 { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
219 { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
220 { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
221 { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
222 { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
223 // MPEG video Descriptor
224 { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
225 // Wave Audio Essence Descriptor
226 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
227 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
230 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
232 put_buffer(pb, uuid_base, 12);
237 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
239 put_buffer(pb, umid_base, 16);
240 mxf_write_uuid(pb, type, value);
243 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
245 put_be32(pb, ref_count);
249 static int klv_ber_length(uint64_t len)
254 return (av_log2(len) >> 3) + 2;
257 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
259 // Determine the best BER size
267 size = (av_log2(len) >> 3) + 1;
270 put_byte(pb, 0x80 + size);
273 put_byte(pb, len >> 8 * size & 0xff);
279 * Get essence container ul index
281 static int mxf_get_essence_container_ul_index(enum CodecID id)
284 for (i = 0; mxf_essence_mappings[i].id; i++)
285 if (mxf_essence_mappings[i].id == id)
286 return mxf_essence_mappings[i].index;
290 static void mxf_write_primer_pack(AVFormatContext *s)
292 ByteIOContext *pb = s->pb;
293 int local_tag_number, i = 0;
295 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
297 put_buffer(pb, primer_pack_key, 16);
298 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
300 put_be32(pb, local_tag_number); // local_tag num
301 put_be32(pb, 18); // item size, always 18 according to the specs
303 for (i = 0; i < local_tag_number; i++) {
304 put_be16(pb, mxf_local_tag_batch[i].local_tag);
305 put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
309 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
315 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
317 put_buffer(pb, header_metadata_key, 13);
321 static void mxf_free(AVFormatContext *s)
325 for (i = 0; i < s->nb_streams; i++) {
326 AVStream *st = s->streams[i];
327 av_freep(&st->priv_data);
331 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
333 const MXFCodecUL *uls = ff_mxf_data_definition_uls;
334 while (uls->uid[0]) {
342 static void mxf_write_essence_container_refs(AVFormatContext *s)
344 MXFContext *c = s->priv_data;
345 ByteIOContext *pb = s->pb;
348 mxf_write_refs_count(pb, c->essence_container_count);
349 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
350 for (i = 0; i < c->essence_container_count; i++) {
351 put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
352 PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
356 static void mxf_write_preface(AVFormatContext *s)
358 MXFContext *mxf = s->priv_data;
359 ByteIOContext *pb = s->pb;
361 mxf_write_metadata_key(pb, 0x012f00);
362 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
363 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
365 // write preface set uid
366 mxf_write_local_tag(pb, 16, 0x3C0A);
367 mxf_write_uuid(pb, Preface, 0);
368 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
370 // last modified date
371 mxf_write_local_tag(pb, 8, 0x3B02);
372 put_be64(pb, mxf->timestamp);
375 mxf_write_local_tag(pb, 2, 0x3B05);
378 // write identification_refs
379 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
380 mxf_write_refs_count(pb, 1);
381 mxf_write_uuid(pb, Identification, 0);
383 // write content_storage_refs
384 mxf_write_local_tag(pb, 16, 0x3B03);
385 mxf_write_uuid(pb, ContentStorage, 0);
387 // operational pattern
388 mxf_write_local_tag(pb, 16, 0x3B09);
389 if (s->nb_streams > 1) {
390 put_buffer(pb, op1a_ul, 14);
391 put_be16(pb, 0x0900); // multi track
393 put_buffer(pb, op1a_ul, 16);
396 // write essence_container_refs
397 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
398 mxf_write_essence_container_refs(s);
400 // write dm_scheme_refs
401 mxf_write_local_tag(pb, 8, 0x3B0B);
406 * Write a local tag containing an ascii string as utf-16
408 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
410 int i, size = strlen(value);
411 mxf_write_local_tag(pb, size*2, tag);
412 for (i = 0; i < size; i++)
413 put_be16(pb, value[i]);
416 static void mxf_write_identification(AVFormatContext *s)
418 MXFContext *mxf = s->priv_data;
419 ByteIOContext *pb = s->pb;
420 const char *company = "FFmpeg";
421 const char *product = "OP1a Muxer";
425 mxf_write_metadata_key(pb, 0x013000);
426 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
428 version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
429 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
430 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
431 klv_encode_ber_length(pb, length);
434 mxf_write_local_tag(pb, 16, 0x3C0A);
435 mxf_write_uuid(pb, Identification, 0);
436 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
438 // write generation uid
439 mxf_write_local_tag(pb, 16, 0x3C09);
440 mxf_write_uuid(pb, Identification, 1);
442 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
443 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
444 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
447 mxf_write_local_tag(pb, 16, 0x3C05);
448 mxf_write_uuid(pb, Identification, 2);
451 mxf_write_local_tag(pb, 8, 0x3C06);
452 put_be64(pb, mxf->timestamp);
455 static void mxf_write_content_storage(AVFormatContext *s)
457 ByteIOContext *pb = s->pb;
459 mxf_write_metadata_key(pb, 0x011800);
460 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
461 klv_encode_ber_length(pb, 92);
464 mxf_write_local_tag(pb, 16, 0x3C0A);
465 mxf_write_uuid(pb, ContentStorage, 0);
466 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
468 // write package reference
469 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
470 mxf_write_refs_count(pb, 2);
471 mxf_write_uuid(pb, MaterialPackage, 0);
472 mxf_write_uuid(pb, SourcePackage, 0);
474 // write essence container data
475 mxf_write_local_tag(pb, 8 + 16, 0x1902);
476 mxf_write_refs_count(pb, 1);
477 mxf_write_uuid(pb, EssenceContainerData, 0);
480 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
482 MXFContext *mxf = s->priv_data;
483 ByteIOContext *pb = s->pb;
484 MXFStreamContext *sc = st->priv_data;
486 mxf_write_metadata_key(pb, 0x013b00);
487 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
488 klv_encode_ber_length(pb, 80);
491 mxf_write_local_tag(pb, 16, 0x3C0A);
492 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
493 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
496 mxf_write_local_tag(pb, 4, 0x4801);
497 put_be32(pb, st->index);
499 // write track number
500 mxf_write_local_tag(pb, 4, 0x4804);
501 if (type == MaterialPackage)
502 put_be32(pb, 0); // track number of material package is 0
504 put_buffer(pb, sc->track_essence_element_key + 12, 4);
506 mxf_write_local_tag(pb, 8, 0x4B01);
507 put_be32(pb, mxf->time_base.den);
508 put_be32(pb, mxf->time_base.num);
511 mxf_write_local_tag(pb, 8, 0x4B02);
514 // write sequence refs
515 mxf_write_local_tag(pb, 16, 0x4803);
516 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
519 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
521 const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
522 MXFStreamContext *sc = st->priv_data;
524 // find data define uls
525 mxf_write_local_tag(pb, 16, 0x0201);
526 put_buffer(pb, data_def_ul->uid, 16);
529 mxf_write_local_tag(pb, 8, 0x0202);
530 put_be64(pb, sc->duration);
533 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
535 ByteIOContext *pb = s->pb;
537 mxf_write_metadata_key(pb, 0x010f00);
538 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
539 klv_encode_ber_length(pb, 80);
541 mxf_write_local_tag(pb, 16, 0x3C0A);
542 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
544 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
545 mxf_write_common_fields(pb, st);
547 // write structural component
548 mxf_write_local_tag(pb, 16 + 8, 0x1001);
549 mxf_write_refs_count(pb, 1);
550 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
553 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
555 ByteIOContext *pb = s->pb;
558 mxf_write_metadata_key(pb, 0x011100);
559 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
560 klv_encode_ber_length(pb, 108);
563 mxf_write_local_tag(pb, 16, 0x3C0A);
564 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
566 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
567 mxf_write_common_fields(pb, st);
569 // write start_position
570 mxf_write_local_tag(pb, 8, 0x1201);
573 // write source package uid, end of the reference
574 mxf_write_local_tag(pb, 32, 0x1101);
575 if (type == SourcePackage) {
576 for (i = 0; i < 4; i++)
579 mxf_write_umid(pb, SourcePackage, 0);
581 // write source track id
582 mxf_write_local_tag(pb, 4, 0x1102);
583 if (type == SourcePackage)
586 put_be32(pb, st->index);
589 static void mxf_write_multi_descriptor(AVFormatContext *s)
591 MXFContext *mxf = s->priv_data;
592 ByteIOContext *pb = s->pb;
595 mxf_write_metadata_key(pb, 0x014400);
596 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
597 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
599 mxf_write_local_tag(pb, 16, 0x3C0A);
600 mxf_write_uuid(pb, MultipleDescriptor, 0);
601 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
604 mxf_write_local_tag(pb, 8, 0x3001);
605 put_be32(pb, mxf->time_base.den);
606 put_be32(pb, mxf->time_base.num);
608 // write essence container ul
609 mxf_write_local_tag(pb, 16, 0x3004);
610 put_buffer(pb, multiple_desc_ul, 16);
612 // write sub descriptor refs
613 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
614 mxf_write_refs_count(pb, s->nb_streams);
615 for (i = 0; i < s->nb_streams; i++)
616 mxf_write_uuid(pb, SubDescriptor, i);
619 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
621 MXFContext *mxf = s->priv_data;
622 MXFStreamContext *sc = st->priv_data;
623 ByteIOContext *pb = s->pb;
625 put_buffer(pb, key, 16);
626 klv_encode_ber_length(pb, size);
628 mxf_write_local_tag(pb, 16, 0x3C0A);
629 mxf_write_uuid(pb, SubDescriptor, st->index);
631 mxf_write_local_tag(pb, 4, 0x3006);
632 put_be32(pb, st->index);
634 mxf_write_local_tag(pb, 8, 0x3001);
635 put_be32(pb, mxf->time_base.den);
636 put_be32(pb, mxf->time_base.num);
638 mxf_write_local_tag(pb, 16, 0x3004);
639 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
642 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
643 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
644 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
646 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
648 MXFStreamContext *sc = st->priv_data;
649 ByteIOContext *pb = s->pb;
650 int stored_height = (st->codec->height+15)/16*16;
654 mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 169+sc->interlaced*4);
656 mxf_write_local_tag(pb, 4, 0x3203);
657 put_be32(pb, st->codec->width);
659 mxf_write_local_tag(pb, 4, 0x3202);
660 put_be32(pb, stored_height>>sc->interlaced);
662 mxf_write_local_tag(pb, 4, 0x3209);
663 put_be32(pb, st->codec->width);
665 mxf_write_local_tag(pb, 4, 0x3208);
666 put_be32(pb, st->codec->height>>sc->interlaced);
669 mxf_write_local_tag(pb, 4, 0x3301);
672 // horizontal subsampling
673 mxf_write_local_tag(pb, 4, 0x3302);
677 mxf_write_local_tag(pb, 4, 0x8000);
678 put_be32(pb, st->codec->bit_rate);
681 mxf_write_local_tag(pb, 1, 0x320C);
682 put_byte(pb, sc->interlaced);
685 switch (st->codec->height) {
686 case 576: f1 = 23; f2 = 336; break;
687 case 608: f1 = 7; f2 = 320; break;
688 case 480: f1 = 20; f2 = 283; break;
689 case 512: f1 = 7; f2 = 270; break;
690 case 720: f1 = 26; f2 = 0; break; // progressive
691 case 1080: f1 = 21; f2 = 584; break;
692 default: f1 = 0; f2 = 0; break;
695 if (!sc->interlaced) {
700 mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
701 put_be32(pb, sc->interlaced ? 2 : 1);
707 av_reduce(&dar.num, &dar.den,
708 st->codec->width*st->codec->sample_aspect_ratio.num,
709 st->codec->height*st->codec->sample_aspect_ratio.den,
712 mxf_write_local_tag(pb, 8, 0x320E);
713 put_be32(pb, dar.num);
714 put_be32(pb, dar.den);
716 mxf_write_local_tag(pb, 16, 0x3201);
717 put_buffer(pb, *sc->codec_ul, 16);
720 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
722 ByteIOContext *pb = s->pb;
724 mxf_write_generic_desc(s, st, key, size);
727 mxf_write_local_tag(pb, 1, 0x3D02);
730 // write audio sampling rate
731 mxf_write_local_tag(pb, 8, 0x3D03);
732 put_be32(pb, st->codec->sample_rate);
735 mxf_write_local_tag(pb, 4, 0x3D07);
736 put_be32(pb, st->codec->channels);
738 mxf_write_local_tag(pb, 4, 0x3D01);
739 put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
742 static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
744 ByteIOContext *pb = s->pb;
746 mxf_write_generic_sound_desc(s, st, key, size);
748 mxf_write_local_tag(pb, 2, 0x3D0A);
749 put_be16(pb, st->codec->block_align);
752 mxf_write_local_tag(pb, 4, 0x3D09);
753 put_be32(pb, st->codec->block_align*st->codec->sample_rate);
756 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
758 mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
761 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
763 mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
766 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
768 MXFContext *mxf = s->priv_data;
769 ByteIOContext *pb = s->pb;
772 if (type == MaterialPackage) {
773 mxf_write_metadata_key(pb, 0x013600);
774 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
775 klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
777 mxf_write_metadata_key(pb, 0x013700);
778 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
779 klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
783 mxf_write_local_tag(pb, 16, 0x3C0A);
784 mxf_write_uuid(pb, type, 0);
785 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
786 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
788 // write package umid
789 mxf_write_local_tag(pb, 32, 0x4401);
790 mxf_write_umid(pb, type, 0);
791 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
793 // package creation date
794 mxf_write_local_tag(pb, 8, 0x4405);
795 put_be64(pb, mxf->timestamp);
797 // package modified date
798 mxf_write_local_tag(pb, 8, 0x4404);
799 put_be64(pb, mxf->timestamp);
802 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
803 mxf_write_refs_count(pb, s->nb_streams);
804 for (i = 0; i < s->nb_streams; i++)
805 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
807 // write multiple descriptor reference
808 if (type == SourcePackage) {
809 mxf_write_local_tag(pb, 16, 0x4701);
810 if (s->nb_streams > 1) {
811 mxf_write_uuid(pb, MultipleDescriptor, 0);
812 mxf_write_multi_descriptor(s);
814 mxf_write_uuid(pb, SubDescriptor, 0);
817 for (i = 0; i < s->nb_streams; i++) {
818 AVStream *st = s->streams[i];
819 mxf_write_track(s, st, type);
820 mxf_write_sequence(s, st, type);
821 mxf_write_structural_component(s, st, type);
823 if (type == SourcePackage) {
824 MXFStreamContext *sc = st->priv_data;
825 mxf_essence_container_uls[sc->index].write_desc(s, st);
830 static int mxf_write_essence_container_data(AVFormatContext *s)
832 ByteIOContext *pb = s->pb;
834 mxf_write_metadata_key(pb, 0x012300);
835 klv_encode_ber_length(pb, 72);
837 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
838 mxf_write_uuid(pb, EssenceContainerData, 0);
840 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
841 mxf_write_umid(pb, SourcePackage, 0);
843 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
846 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
852 static int mxf_write_header_metadata_sets(AVFormatContext *s)
854 mxf_write_preface(s);
855 mxf_write_identification(s);
856 mxf_write_content_storage(s);
857 mxf_write_package(s, MaterialPackage);
858 mxf_write_package(s, SourcePackage);
859 mxf_write_essence_container_data(s);
863 static unsigned klv_fill_size(uint64_t size)
865 unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
866 if (pad < 17) // smallest fill item possible
867 return pad + KAG_SIZE;
869 return pad & (KAG_SIZE-1);
872 static void mxf_write_index_table_segment(AVFormatContext *s)
874 MXFContext *mxf = s->priv_data;
875 ByteIOContext *pb = s->pb;
877 int temporal_reordering = 0;
878 int last_key_index = 0, key_index = 0;
880 av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
882 put_buffer(pb, index_table_segment_key, 16);
883 klv_encode_ber_length(pb, 109 + (s->nb_streams+1)*6 +
884 mxf->edit_units_count*(11+mxf->slice_count*4));
887 mxf_write_local_tag(pb, 16, 0x3C0A);
888 mxf_write_uuid(pb, IndexTableSegment, 0);
891 mxf_write_local_tag(pb, 8, 0x3F0B);
892 put_be32(pb, mxf->time_base.num);
893 put_be32(pb, mxf->time_base.den);
895 // index start position
896 mxf_write_local_tag(pb, 8, 0x3F0C);
900 mxf_write_local_tag(pb, 8, 0x3F0D);
901 put_be64(pb, mxf->edit_units_count);
903 // edit unit byte count
904 mxf_write_local_tag(pb, 4, 0x3F05);
908 mxf_write_local_tag(pb, 4, 0x3F06);
912 mxf_write_local_tag(pb, 4, 0x3F07);
915 // real slice count - 1
916 mxf_write_local_tag(pb, 1, 0x3F08);
917 put_byte(pb, mxf->slice_count);
920 mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
921 put_be32(pb, s->nb_streams+1); // num of entries
922 put_be32(pb, 6); // size of one entry
923 // write system item delta entry
925 put_byte(pb, 0); // slice entry
926 put_be32(pb, 0); // element delta
927 for (i = 0; i < s->nb_streams; i++) {
928 AVStream *st = s->streams[i];
929 MXFStreamContext *sc = st->priv_data;
930 put_byte(pb, sc->temporal_reordering);
931 if (sc->temporal_reordering)
932 temporal_reordering = 1;
934 if (i == 0) { // video track
935 put_byte(pb, 0); // slice number
936 put_be32(pb, KAG_SIZE); // system item size including klv fill
937 } else { // audio track
938 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
939 audio_frame_size += klv_fill_size(audio_frame_size);
941 put_be32(pb, (i-1)*audio_frame_size); // element delta
945 mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
946 put_be32(pb, mxf->edit_units_count); // num of entries
947 put_be32(pb, 11+mxf->slice_count*4); // size of one entry
948 for (i = 0; i < mxf->edit_units_count; i++) {
949 if (temporal_reordering) {
950 int temporal_offset = 0;
951 for (j = i+1; j < mxf->edit_units_count; j++) {
953 if (mxf->index_entries[j].flags & 0x10) { // backward prediction
954 // next is not b, so is reordered
955 if (!(mxf->index_entries[i+1].flags & 0x10)) {
956 if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
959 temporal_offset = -temporal_offset;
964 put_byte(pb, temporal_offset);
967 if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
968 last_key_index = key_index;
971 if (mxf->index_entries[i].flags & 0x10 && // backward prediction
972 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
973 put_byte(pb, last_key_index - i);
975 put_byte(pb, key_index - i); // key frame offset
976 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
977 last_key_index = key_index;
979 put_byte(pb, mxf->index_entries[i].flags);
981 put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
982 if (s->nb_streams > 1)
983 put_be32(pb, mxf->index_entries[i].slice_offset);
987 static void mxf_write_klv_fill(AVFormatContext *s)
989 unsigned pad = klv_fill_size(url_ftell(s->pb));
991 put_buffer(s->pb, klv_fill_key, 16);
993 pad -= klv_ber_length(pad);
994 klv_encode_ber_length(s->pb, pad);
995 for (; pad > 7; pad -= 8)
999 assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1003 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1004 int indexsid, unsigned index_byte_count,
1005 const uint8_t *key, int write_metadata)
1007 MXFContext *mxf = s->priv_data;
1008 ByteIOContext *pb = s->pb;
1009 int64_t header_byte_count_offset;
1012 put_buffer(pb, key, 16);
1014 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1016 // write partition value
1017 put_be16(pb, 1); // majorVersion
1018 put_be16(pb, 2); // minorVersion
1019 put_be32(pb, KAG_SIZE); // KAGSize
1021 put_be64(pb, url_ftell(pb) - 25); // thisPartition
1022 put_be64(pb, 0); // previousPartition
1024 put_be64(pb, mxf->footer_partition_offset); // footerPartition
1027 header_byte_count_offset = url_ftell(pb);
1028 put_be64(pb, 0); // headerByteCount, update later
1031 put_be64(pb, index_byte_count); // indexByteCount
1032 put_be32(pb, indexsid); // indexSID
1033 put_be64(pb, 0); // bodyOffset
1035 put_be32(pb, bodysid); // bodySID
1037 // operational pattern
1038 if (s->nb_streams > 1) {
1039 put_buffer(pb, op1a_ul, 14);
1040 put_be16(pb, 0x0900); // multi track
1042 put_buffer(pb, op1a_ul, 16);
1045 // essence container
1046 mxf_write_essence_container_refs(s);
1048 if (write_metadata) {
1049 // mark the start of the headermetadata and calculate metadata size
1051 unsigned header_byte_count;
1053 mxf_write_klv_fill(s);
1055 start = url_ftell(s->pb);
1056 mxf_write_primer_pack(s);
1057 mxf_write_header_metadata_sets(s);
1058 pos = url_ftell(s->pb);
1059 header_byte_count = pos - start + klv_fill_size(pos);
1061 // update header_byte_count
1062 url_fseek(pb, header_byte_count_offset, SEEK_SET);
1063 put_be64(pb, header_byte_count);
1064 url_fseek(pb, pos, SEEK_SET);
1067 put_flush_packet(pb);
1070 static const UID mxf_mpeg2_codec_uls[] = {
1071 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1072 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1073 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1074 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1075 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1076 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1077 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1078 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1081 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1083 if (avctx->profile == 4) { // Main
1084 if (avctx->level == 8) // Main
1085 return avctx->gop_size ?
1086 &mxf_mpeg2_codec_uls[1] :
1087 &mxf_mpeg2_codec_uls[0];
1088 else if (avctx->level == 4) // High
1089 return avctx->gop_size ?
1090 &mxf_mpeg2_codec_uls[5] :
1091 &mxf_mpeg2_codec_uls[4];
1092 } else if (avctx->profile == 0) { // 422
1093 if (avctx->level == 5) // Main
1094 return avctx->gop_size ?
1095 &mxf_mpeg2_codec_uls[3] :
1096 &mxf_mpeg2_codec_uls[2];
1097 else if (avctx->level == 2) // High
1098 return avctx->gop_size ?
1099 &mxf_mpeg2_codec_uls[7] :
1100 &mxf_mpeg2_codec_uls[6];
1105 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1107 MXFContext *mxf = s->priv_data;
1108 MXFStreamContext *sc = st->priv_data;
1112 mxf->index_entries[mxf->edit_units_count].flags = 0;
1114 for(i = 0; i < pkt->size - 4; i++) {
1115 c = (c<<8) + pkt->data[i];
1117 if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1118 st->codec->profile = pkt->data[i+1] & 0x07;
1119 st->codec->level = pkt->data[i+2] >> 4;
1120 } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1121 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1124 } else if (c == 0x1b8) { // gop
1125 if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1126 mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1127 } else if (c == 0x1b3) { // seq
1128 mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1129 } else if (c == 0x100) { // pic
1130 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1131 if (pict_type == 2) { // P frame
1132 mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1133 st->codec->gop_size = 1;
1134 } else if (pict_type == 3) { // B frame
1135 mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1136 sc->temporal_reordering = -1;
1137 } else if (!pict_type) {
1138 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1143 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1144 return !!sc->codec_ul;
1147 static uint64_t mxf_parse_timestamp(time_t timestamp)
1149 struct tm *time = localtime(×tamp);
1150 return (uint64_t)(time->tm_year+1900) << 48 |
1151 (uint64_t)(time->tm_mon+1) << 40 |
1152 (uint64_t) time->tm_mday << 32 |
1153 time->tm_hour << 24 |
1154 time->tm_min << 16 |
1158 static int mxf_write_header(AVFormatContext *s)
1160 MXFContext *mxf = s->priv_data;
1162 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1163 const int *samples_per_frame = NULL;
1165 if (s->nb_streams > 17) {
1166 av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1170 for (i = 0; i < s->nb_streams; i++) {
1171 AVStream *st = s->streams[i];
1172 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1174 return AVERROR(ENOMEM);
1177 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1179 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1182 if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1183 samples_per_frame = PAL_samples_per_frame;
1184 mxf->time_base = (AVRational){ 1, 25 };
1185 } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1186 samples_per_frame = NTSC_samples_per_frame;
1187 mxf->time_base = (AVRational){ 1001, 30000 };
1189 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1192 av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1193 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1194 if (st->codec->sample_rate != 48000) {
1195 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1198 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1199 mxf->slice_count = 1;
1203 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1204 if (sc->index == -1) {
1205 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1206 "codec not currently supported in container\n", i);
1210 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1212 if (!present[sc->index]) {
1213 mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1214 present[sc->index] = 1;
1216 present[sc->index]++;
1217 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1218 sc->track_essence_element_key[15] = present[sc->index];
1219 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1222 for (i = 0; i < s->nb_streams; i++) {
1223 MXFStreamContext *sc = s->streams[i]->priv_data;
1224 // update element count
1225 sc->track_essence_element_key[13] = present[sc->index];
1226 sc->order = AV_RB32(sc->track_essence_element_key+12);
1229 mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1231 if (!samples_per_frame)
1232 samples_per_frame = PAL_samples_per_frame;
1234 if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1240 static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1241 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 };
1243 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1245 return (0 << 31) | // color frame flag
1246 (0 << 30) | // drop frame flag
1247 ( ((frame % fps) / 10) << 28) | // tens of frames
1248 ( ((frame % fps) % 10) << 24) | // units of frames
1249 (0 << 23) | // field phase (NTSC), b0 (PAL)
1250 ((((frame / fps) % 60) / 10) << 20) | // tens of seconds
1251 ((((frame / fps) % 60) % 10) << 16) | // units of seconds
1252 (0 << 15) | // b0 (NTSC), b2 (PAL)
1253 ((((frame / (fps * 60)) % 60) / 10) << 12) | // tens of minutes
1254 ((((frame / (fps * 60)) % 60) % 10) << 8) | // units of minutes
1256 (0 << 6) | // b2 (NSC), field phase (PAL)
1257 ((((frame / (fps * 3600) % 24)) / 10) << 4) | // tens of hours
1258 ( (frame / (fps * 3600) % 24)) % 10; // units of hours
1261 static void mxf_write_system_item(AVFormatContext *s)
1263 MXFContext *mxf = s->priv_data;
1264 ByteIOContext *pb = s->pb;
1265 unsigned fps, frame;
1268 frame = mxf->edit_units_count;
1270 // write system metadata pack
1271 put_buffer(pb, system_metadata_pack_key, 16);
1272 klv_encode_ber_length(pb, 57);
1273 put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1274 put_byte(pb, 0x04); // content package rate
1275 put_byte(pb, 0x00); // content package type
1276 put_be16(pb, 0x00); // channel handle
1277 put_be16(pb, frame); // continuity count
1278 if (mxf->essence_container_count > 1)
1279 put_buffer(pb, multiple_desc_ul, 16);
1281 put_buffer(pb, mxf_essence_container_uls[mxf->essence_containers_indices[0]].container_ul, 16);
1284 put_be64(pb, 0); // creation date/time stamp
1287 if (mxf->time_base.den == 30000) fps = 30;
1290 put_byte(pb, 0x81); // SMPTE 12M time code
1291 time_code = ff_framenum_to_12m_time_code(frame, 0, fps);
1292 put_be32(pb, time_code);
1293 put_be32(pb, 0); // binary group data
1296 // write system metadata package set
1297 put_buffer(pb, system_metadata_package_set_key, 16);
1298 klv_encode_ber_length(pb, 35);
1299 put_byte(pb, 0x83); // UMID
1301 mxf_write_umid(pb, SourcePackage, 0);
1304 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1306 MXFContext *mxf = s->priv_data;
1307 ByteIOContext *pb = s->pb;
1308 AVStream *st = s->streams[pkt->stream_index];
1309 MXFStreamContext *sc = st->priv_data;
1311 if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1312 mxf->index_entries = av_realloc(mxf->index_entries,
1313 (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1314 sizeof(*mxf->index_entries));
1315 if (!mxf->index_entries) {
1316 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1321 if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1322 if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1323 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1328 if (!mxf->header_written) {
1329 mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
1330 mxf->header_written = 1;
1333 mxf_write_klv_fill(s);
1335 if (st->index == 0) {
1336 mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1338 mxf_write_system_item(s);
1339 mxf_write_klv_fill(s);
1341 mxf->edit_units_count++;
1342 } else if (st->index == 1) {
1343 mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1344 url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1347 put_buffer(pb, sc->track_essence_element_key, 16); // write key
1348 klv_encode_ber_length(pb, pkt->size); // write length
1349 put_buffer(pb, pkt->data, pkt->size); // write value
1351 sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1353 put_flush_packet(pb);
1357 static void mxf_write_random_index_pack(AVFormatContext *s)
1359 MXFContext *mxf = s->priv_data;
1360 ByteIOContext *pb = s->pb;
1361 uint64_t pos = url_ftell(pb);
1363 put_buffer(pb, random_index_pack_key, 16);
1364 klv_encode_ber_length(pb, 28);
1366 put_be32(pb, 1); // BodySID of header partition
1367 put_be64(pb, 0); // offset of header partition
1369 put_be32(pb, 0); // BodySID of footer partition
1370 put_be64(pb, mxf->footer_partition_offset);
1372 put_be32(pb, url_ftell(pb) - pos + 4);
1375 static int mxf_write_footer(AVFormatContext *s)
1377 MXFContext *mxf = s->priv_data;
1378 ByteIOContext *pb = s->pb;
1379 unsigned index_byte_count =
1380 109 + (s->nb_streams+1)*6 +
1381 mxf->edit_units_count*(11+mxf->slice_count*4);
1383 // add encoded ber length
1384 index_byte_count += 16 + klv_ber_length(index_byte_count);
1385 index_byte_count += klv_fill_size(index_byte_count);
1387 mxf_write_klv_fill(s);
1389 mxf->footer_partition_offset = url_ftell(pb);
1390 mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
1392 mxf_write_klv_fill(s);
1394 mxf_write_index_table_segment(s);
1396 mxf_write_klv_fill(s);
1398 mxf_write_random_index_pack(s);
1400 if (!url_is_streamed(s->pb)) {
1401 url_fseek(pb, 0, SEEK_SET);
1402 mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
1405 ff_audio_interleave_close(s);
1407 av_freep(&mxf->index_entries);
1413 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1416 int stream_count = 0;
1417 int streams[MAX_STREAMS];
1419 memset(streams, 0, sizeof(streams));
1420 pktl = s->packet_buffer;
1422 //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1423 if (!streams[pktl->pkt.stream_index])
1425 streams[pktl->pkt.stream_index]++;
1429 if (stream_count && (s->nb_streams == stream_count || flush)) {
1430 pktl = s->packet_buffer;
1431 if (s->nb_streams != stream_count) {
1432 AVPacketList *first = NULL;
1433 // find first packet in edit unit
1435 AVStream *st = s->streams[pktl->pkt.stream_index];
1442 // purge packet queue
1444 AVPacketList *next = pktl->next;
1445 av_free_packet(&pktl->pkt);
1455 //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1456 s->packet_buffer = pktl->next;
1461 av_init_packet(out);
1466 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1468 MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
1469 MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1471 return next->dts > pkt->dts ||
1472 (next->dts == pkt->dts && sc->order < sc2->order);
1475 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1477 return ff_audio_rechunk_interleave(s, out, pkt, flush,
1478 mxf_interleave_get_packet, mxf_compare_timestamps);
1481 AVOutputFormat mxf_muxer = {
1483 NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1488 CODEC_ID_MPEG2VIDEO,