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"
41 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
42 static const int PAL_samples_per_frame[] = { 1920, 0 };
44 #define MXF_INDEX_CLUSTER_SIZE 4096
49 unsigned fifo_size; ///< current fifo size allocated
50 uint64_t dts; ///< current dts
51 int sample_size; ///< size of one sample all channels included
52 const int *samples_per_frame; ///< must be 0 terminated
53 const int *samples; ///< current samples per frame, pointer to samples_per_frame
54 AVRational time_base; ///< time base of output audio packets
55 } AudioInterleaveContext;
65 unsigned slice_offset[17]; // one video, 16 audio
69 AudioInterleaveContext aic;
70 UID track_essence_element_key;
71 int index; ///< index in mxf_essence_container_uls table
74 int order; ///< interleaving order if dts are equal
75 int interlaced; ///< wether picture is interlaced
76 int temporal_reordering;
84 } MXFContainerEssenceEntry;
89 } mxf_essence_mappings[] = {
90 { CODEC_ID_MPEG2VIDEO, 0 },
91 { CODEC_ID_PCM_S24LE, 1 },
92 { CODEC_ID_PCM_S16LE, 1 },
96 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
97 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
98 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
100 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
101 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
102 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
103 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
104 mxf_write_mpegvideo_desc },
105 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
106 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
107 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
108 mxf_write_aes3_desc },
109 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
110 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
111 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
112 mxf_write_wav_desc },
113 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
114 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
115 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
119 typedef struct MXFContext {
120 int64_t footer_partition_offset;
121 int essence_container_count;
122 uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
123 AVRational time_base;
125 MXFIndexEntry *index_entries;
126 unsigned edit_units_count;
127 int edit_unit_start; ///< index of the stream starting edit unit
128 uint64_t timestamp; ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
131 static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
132 static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
135 * complete key for operation pattern, partitions, and primer pack
137 static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
138 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
139 static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
140 static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
141 static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
142 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
143 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
144 static const uint8_t klv_fill_key[] = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
147 * partial key for header metadata
149 static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
150 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
153 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
155 static const MXFLocalTagPair mxf_local_tag_batch[] = {
157 { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
158 { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
159 { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
160 { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
161 { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
162 { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
163 { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
164 { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
166 { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
167 { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
168 { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
169 { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
170 { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
171 { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
173 { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
174 { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
175 // Essence Container Data
176 { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
177 { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
179 { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
180 { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
181 { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
182 { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
183 { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
185 { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
186 { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
187 { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
188 { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
189 { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
191 { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
192 { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
193 { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
195 { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
196 { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
197 { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
199 { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
200 { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
201 { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
202 { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
203 // Generic Picture Essence Descriptor
204 { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
205 { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
206 { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
207 { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
208 { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
209 { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
210 { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
211 { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
212 // Generic Sound Essence Descriptor
213 { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
214 { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
215 { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
216 { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
217 { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
218 // Index Table Segment
219 { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
220 { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
221 { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
222 { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
223 { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
224 { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
225 { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
226 { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
227 // MPEG video Descriptor
228 { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
229 // Wave Audio Essence Descriptor
230 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
231 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
234 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
236 put_buffer(pb, uuid_base, 12);
241 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
243 put_buffer(pb, umid_base, 16);
244 mxf_write_uuid(pb, type, value);
247 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
249 put_be32(pb, ref_count);
253 static int klv_ber_length(uint64_t len)
258 return (av_log2(len) >> 3) + 2;
261 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
263 // Determine the best BER size
271 size = (av_log2(len) >> 3) + 1;
274 put_byte(pb, 0x80 + size);
277 put_byte(pb, len >> 8 * size & 0xff);
283 * Get essence container ul index
285 static int mxf_get_essence_container_ul_index(enum CodecID id)
288 for (i = 0; mxf_essence_mappings[i].id; i++)
289 if (mxf_essence_mappings[i].id == id)
290 return mxf_essence_mappings[i].index;
294 static void mxf_write_primer_pack(AVFormatContext *s)
296 ByteIOContext *pb = s->pb;
297 int local_tag_number, i = 0;
299 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
301 put_buffer(pb, primer_pack_key, 16);
302 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
304 put_be32(pb, local_tag_number); // local_tag num
305 put_be32(pb, 18); // item size, always 18 according to the specs
307 for (i = 0; i < local_tag_number; i++) {
308 put_be16(pb, mxf_local_tag_batch[i].local_tag);
309 put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
313 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
319 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
321 put_buffer(pb, header_metadata_key, 13);
325 static void mxf_free(AVFormatContext *s)
329 for (i = 0; i < s->nb_streams; i++) {
330 AVStream *st = s->streams[i];
331 av_freep(&st->priv_data);
335 static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
337 const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
338 while (uls->type != CODEC_TYPE_DATA) {
339 if (type == uls->type)
346 static void mxf_write_essence_container_refs(AVFormatContext *s)
348 MXFContext *c = s->priv_data;
349 ByteIOContext *pb = s->pb;
352 mxf_write_refs_count(pb, c->essence_container_count);
353 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
354 for (i = 0; i < c->essence_container_count; i++) {
355 put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
356 PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
360 static void mxf_write_preface(AVFormatContext *s)
362 MXFContext *mxf = s->priv_data;
363 ByteIOContext *pb = s->pb;
365 mxf_write_metadata_key(pb, 0x012f00);
366 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
367 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
369 // write preface set uid
370 mxf_write_local_tag(pb, 16, 0x3C0A);
371 mxf_write_uuid(pb, Preface, 0);
372 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
374 // last modified date
375 mxf_write_local_tag(pb, 8, 0x3B02);
376 put_be64(pb, mxf->timestamp);
379 mxf_write_local_tag(pb, 2, 0x3B05);
382 // write identification_refs
383 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
384 mxf_write_refs_count(pb, 1);
385 mxf_write_uuid(pb, Identification, 0);
387 // write content_storage_refs
388 mxf_write_local_tag(pb, 16, 0x3B03);
389 mxf_write_uuid(pb, ContentStorage, 0);
391 mxf_write_local_tag(pb, 16, 0x3B09);
392 put_buffer(pb, op1a_ul, 16);
394 // write essence_container_refs
395 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
396 mxf_write_essence_container_refs(s);
398 // write dm_scheme_refs
399 mxf_write_local_tag(pb, 8, 0x3B0B);
404 * Write a local tag containing an ascii string as utf-16
406 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
408 int i, size = strlen(value);
409 mxf_write_local_tag(pb, size*2, tag);
410 for (i = 0; i < size; i++)
411 put_be16(pb, value[i]);
414 static void mxf_write_identification(AVFormatContext *s)
416 MXFContext *mxf = s->priv_data;
417 ByteIOContext *pb = s->pb;
418 const char *company = "FFmpeg";
419 const char *product = "OP1a Muxer";
423 mxf_write_metadata_key(pb, 0x013000);
424 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
426 version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
427 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
428 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
429 klv_encode_ber_length(pb, length);
432 mxf_write_local_tag(pb, 16, 0x3C0A);
433 mxf_write_uuid(pb, Identification, 0);
434 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
436 // write generation uid
437 mxf_write_local_tag(pb, 16, 0x3C09);
438 mxf_write_uuid(pb, Identification, 1);
440 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
441 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
442 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
445 mxf_write_local_tag(pb, 16, 0x3C05);
446 mxf_write_uuid(pb, Identification, 2);
449 mxf_write_local_tag(pb, 8, 0x3C06);
450 put_be64(pb, mxf->timestamp);
453 static void mxf_write_content_storage(AVFormatContext *s)
455 ByteIOContext *pb = s->pb;
457 mxf_write_metadata_key(pb, 0x011800);
458 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
459 klv_encode_ber_length(pb, 92);
462 mxf_write_local_tag(pb, 16, 0x3C0A);
463 mxf_write_uuid(pb, ContentStorage, 0);
464 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
466 // write package reference
467 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
468 mxf_write_refs_count(pb, 2);
469 mxf_write_uuid(pb, MaterialPackage, 0);
470 mxf_write_uuid(pb, SourcePackage, 0);
472 // write essence container data
473 mxf_write_local_tag(pb, 8 + 16, 0x1902);
474 mxf_write_refs_count(pb, 1);
475 mxf_write_uuid(pb, EssenceContainerData, 0);
478 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
480 MXFContext *mxf = s->priv_data;
481 ByteIOContext *pb = s->pb;
482 MXFStreamContext *sc = st->priv_data;
484 mxf_write_metadata_key(pb, 0x013b00);
485 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
486 klv_encode_ber_length(pb, 80);
489 mxf_write_local_tag(pb, 16, 0x3C0A);
490 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
491 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
494 mxf_write_local_tag(pb, 4, 0x4801);
495 put_be32(pb, st->index);
497 // write track number
498 mxf_write_local_tag(pb, 4, 0x4804);
499 if (type == MaterialPackage)
500 put_be32(pb, 0); // track number of material package is 0
502 put_buffer(pb, sc->track_essence_element_key + 12, 4);
504 mxf_write_local_tag(pb, 8, 0x4B01);
505 put_be32(pb, mxf->time_base.den);
506 put_be32(pb, mxf->time_base.num);
509 mxf_write_local_tag(pb, 8, 0x4B02);
512 // write sequence refs
513 mxf_write_local_tag(pb, 16, 0x4803);
514 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
517 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
519 const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
520 MXFStreamContext *sc = st->priv_data;
522 // find data define uls
523 mxf_write_local_tag(pb, 16, 0x0201);
524 put_buffer(pb, data_def_ul->uid, 16);
527 mxf_write_local_tag(pb, 8, 0x0202);
528 put_be64(pb, sc->duration);
531 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
533 ByteIOContext *pb = s->pb;
535 mxf_write_metadata_key(pb, 0x010f00);
536 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
537 klv_encode_ber_length(pb, 80);
539 mxf_write_local_tag(pb, 16, 0x3C0A);
540 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
542 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
543 mxf_write_common_fields(pb, st);
545 // write structural component
546 mxf_write_local_tag(pb, 16 + 8, 0x1001);
547 mxf_write_refs_count(pb, 1);
548 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
551 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
553 ByteIOContext *pb = s->pb;
556 mxf_write_metadata_key(pb, 0x011100);
557 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
558 klv_encode_ber_length(pb, 108);
561 mxf_write_local_tag(pb, 16, 0x3C0A);
562 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
564 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
565 mxf_write_common_fields(pb, st);
567 // write start_position
568 mxf_write_local_tag(pb, 8, 0x1201);
571 // write source package uid, end of the reference
572 mxf_write_local_tag(pb, 32, 0x1101);
573 if (type == SourcePackage) {
574 for (i = 0; i < 4; i++)
577 mxf_write_umid(pb, SourcePackage, 0);
579 // write source track id
580 mxf_write_local_tag(pb, 4, 0x1102);
581 if (type == SourcePackage)
584 put_be32(pb, st->index);
587 static void mxf_write_multi_descriptor(AVFormatContext *s)
589 MXFContext *mxf = s->priv_data;
590 ByteIOContext *pb = s->pb;
593 mxf_write_metadata_key(pb, 0x014400);
594 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
595 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
597 mxf_write_local_tag(pb, 16, 0x3C0A);
598 mxf_write_uuid(pb, MultipleDescriptor, 0);
599 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
602 mxf_write_local_tag(pb, 8, 0x3001);
603 put_be32(pb, mxf->time_base.den);
604 put_be32(pb, mxf->time_base.num);
606 // write essence container ul
607 mxf_write_local_tag(pb, 16, 0x3004);
608 put_buffer(pb, multiple_desc_ul, 16);
610 // write sub descriptor refs
611 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
612 mxf_write_refs_count(pb, s->nb_streams);
613 for (i = 0; i < s->nb_streams; i++)
614 mxf_write_uuid(pb, SubDescriptor, i);
617 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
619 MXFContext *mxf = s->priv_data;
620 MXFStreamContext *sc = st->priv_data;
621 ByteIOContext *pb = s->pb;
623 put_buffer(pb, key, 16);
624 klv_encode_ber_length(pb, size);
626 mxf_write_local_tag(pb, 16, 0x3C0A);
627 mxf_write_uuid(pb, SubDescriptor, st->index);
629 mxf_write_local_tag(pb, 4, 0x3006);
630 put_be32(pb, st->index);
632 mxf_write_local_tag(pb, 8, 0x3001);
633 put_be32(pb, mxf->time_base.den);
634 put_be32(pb, mxf->time_base.num);
636 mxf_write_local_tag(pb, 16, 0x3004);
637 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
640 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
641 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
642 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
644 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
646 MXFStreamContext *sc = st->priv_data;
647 ByteIOContext *pb = s->pb;
648 int stored_height = (st->codec->height+15)/16*16;
652 mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
654 mxf_write_local_tag(pb, 4, 0x3203);
655 put_be32(pb, st->codec->width);
657 mxf_write_local_tag(pb, 4, 0x3202);
658 put_be32(pb, stored_height>>sc->interlaced);
660 mxf_write_local_tag(pb, 4, 0x3209);
661 put_be32(pb, st->codec->width);
663 mxf_write_local_tag(pb, 4, 0x3208);
664 put_be32(pb, st->codec->height>>sc->interlaced);
667 mxf_write_local_tag(pb, 4, 0x8000);
668 put_be32(pb, st->codec->bit_rate);
671 mxf_write_local_tag(pb, 1, 0x320C);
672 put_byte(pb, sc->interlaced);
675 switch (st->codec->height) {
676 case 576: f1 = 23; f2 = 336; break;
677 case 608: f1 = 7; f2 = 320; break;
678 case 480: f1 = 20; f2 = 283; break;
679 case 512: f1 = 7; f2 = 270; break;
680 case 720: f1 = 26; f2 = 0; break; // progressive
681 case 1080: f1 = 21; f2 = 584; break;
682 default: f1 = 0; f2 = 0; break;
685 if (!sc->interlaced) {
690 mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
691 put_be32(pb, sc->interlaced ? 2 : 1);
697 av_reduce(&dar.num, &dar.den,
698 st->codec->width*st->codec->sample_aspect_ratio.num,
699 st->codec->height*st->codec->sample_aspect_ratio.den,
702 mxf_write_local_tag(pb, 8, 0x320E);
703 put_be32(pb, dar.num);
704 put_be32(pb, dar.den);
706 mxf_write_local_tag(pb, 16, 0x3201);
707 put_buffer(pb, *sc->codec_ul, 16);
710 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
712 ByteIOContext *pb = s->pb;
714 mxf_write_generic_desc(s, st, key, size);
717 mxf_write_local_tag(pb, 1, 0x3D02);
720 // write audio sampling rate
721 mxf_write_local_tag(pb, 8, 0x3D03);
722 put_be32(pb, st->codec->sample_rate);
725 mxf_write_local_tag(pb, 4, 0x3D07);
726 put_be32(pb, st->codec->channels);
728 mxf_write_local_tag(pb, 4, 0x3D01);
729 put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
732 static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
734 ByteIOContext *pb = s->pb;
736 mxf_write_generic_sound_desc(s, st, key, size);
738 mxf_write_local_tag(pb, 2, 0x3D0A);
739 put_be16(pb, st->codec->block_align);
742 mxf_write_local_tag(pb, 4, 0x3D09);
743 put_be32(pb, st->codec->block_align*st->codec->sample_rate);
746 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
748 mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
751 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
753 mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
756 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
758 MXFContext *mxf = s->priv_data;
759 ByteIOContext *pb = s->pb;
762 if (type == MaterialPackage) {
763 mxf_write_metadata_key(pb, 0x013600);
764 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
765 klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
767 mxf_write_metadata_key(pb, 0x013700);
768 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
769 klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
773 mxf_write_local_tag(pb, 16, 0x3C0A);
774 mxf_write_uuid(pb, type, 0);
775 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
776 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
778 // write package umid
779 mxf_write_local_tag(pb, 32, 0x4401);
780 mxf_write_umid(pb, type, 0);
781 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
783 // package creation date
784 mxf_write_local_tag(pb, 8, 0x4405);
785 put_be64(pb, mxf->timestamp);
787 // package modified date
788 mxf_write_local_tag(pb, 8, 0x4404);
789 put_be64(pb, mxf->timestamp);
792 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
793 mxf_write_refs_count(pb, s->nb_streams);
794 for (i = 0; i < s->nb_streams; i++)
795 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
797 // write multiple descriptor reference
798 if (type == SourcePackage) {
799 mxf_write_local_tag(pb, 16, 0x4701);
800 if (s->nb_streams > 1) {
801 mxf_write_uuid(pb, MultipleDescriptor, 0);
802 mxf_write_multi_descriptor(s);
804 mxf_write_uuid(pb, SubDescriptor, 0);
807 for (i = 0; i < s->nb_streams; i++) {
808 AVStream *st = s->streams[i];
809 mxf_write_track(s, st, type);
810 mxf_write_sequence(s, st, type);
811 mxf_write_structural_component(s, st, type);
813 if (type == SourcePackage) {
814 MXFStreamContext *sc = st->priv_data;
815 mxf_essence_container_uls[sc->index].write_desc(s, st);
820 static int mxf_write_essence_container_data(AVFormatContext *s)
822 ByteIOContext *pb = s->pb;
824 mxf_write_metadata_key(pb, 0x012300);
825 klv_encode_ber_length(pb, 72);
827 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
828 mxf_write_uuid(pb, EssenceContainerData, 0);
830 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
831 mxf_write_umid(pb, SourcePackage, 0);
833 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
836 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
842 static int mxf_write_header_metadata_sets(AVFormatContext *s)
844 mxf_write_preface(s);
845 mxf_write_identification(s);
846 mxf_write_content_storage(s);
847 mxf_write_package(s, MaterialPackage);
848 mxf_write_package(s, SourcePackage);
849 mxf_write_essence_container_data(s);
853 static unsigned klv_fill_size(AVFormatContext *s)
855 unsigned pad = KAG_SIZE - (url_ftell(s->pb) & (KAG_SIZE-1));
856 if (pad < 17) // smallest fill item possible
857 return pad + KAG_SIZE;
859 return pad & (KAG_SIZE-1);
862 static int mxf_write_index_table_segment(AVFormatContext *s)
864 MXFContext *mxf = s->priv_data;
865 ByteIOContext *pb = s->pb;
867 int temporal_reordering = 0;
868 int last_key_index = 0, key_index = 0;
870 av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
872 put_buffer(pb, index_table_segment_key, 16);
873 ret = klv_encode_ber_length(pb, 109 + (s->nb_streams+1)*6 +
874 mxf->edit_units_count*(11+(s->nb_streams-1)*4));
877 mxf_write_local_tag(pb, 16, 0x3C0A);
878 mxf_write_uuid(pb, IndexTableSegment, 0);
881 mxf_write_local_tag(pb, 8, 0x3F0B);
882 put_be32(pb, mxf->time_base.num);
883 put_be32(pb, mxf->time_base.den);
885 // index start position
886 mxf_write_local_tag(pb, 8, 0x3F0C);
890 mxf_write_local_tag(pb, 8, 0x3F0D);
891 put_be64(pb, mxf->edit_units_count);
893 // edit unit byte count
894 mxf_write_local_tag(pb, 4, 0x3F05);
898 mxf_write_local_tag(pb, 4, 0x3F06);
902 mxf_write_local_tag(pb, 4, 0x3F07);
906 mxf_write_local_tag(pb, 1, 0x3F08);
907 put_byte(pb, s->nb_streams-1);
910 mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
911 put_be32(pb, s->nb_streams+1); // num of entries
912 put_be32(pb, 6); // size of one entry
913 // write system item delta entry
915 put_byte(pb, 0); // slice entry
916 put_be32(pb, 0); // element delta
917 for (i = 0; i < s->nb_streams; i++) {
918 AVStream *st = s->streams[i];
919 MXFStreamContext *sc = st->priv_data;
920 put_byte(pb, sc->temporal_reordering);
921 if (sc->temporal_reordering)
922 temporal_reordering = 1;
924 if (mxf->edit_unit_start)
925 put_be32(pb, KAG_SIZE); // system item size including klv fill
927 put_be32(pb, 0); // element delta
930 mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
931 put_be32(pb, mxf->edit_units_count); // num of entries
932 put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
933 for (i = 0; i < mxf->edit_units_count; i++) {
934 if (temporal_reordering) {
935 int temporal_offset = 0;
936 for (j = i+1; j < mxf->edit_units_count; j++) {
938 if (mxf->index_entries[j].flags & 0x10) { // backward prediction
939 // next is not b, so is reordered
940 if (!(mxf->index_entries[i+1].flags & 0x10)) {
941 if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
944 temporal_offset = -temporal_offset;
949 put_byte(pb, temporal_offset);
952 if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
953 last_key_index = key_index;
956 if (mxf->index_entries[i].flags & 0x10 && // backward prediction
957 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
958 put_byte(pb, last_key_index - i);
960 put_byte(pb, key_index - i); // key frame offset
961 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
962 last_key_index = key_index;
964 put_byte(pb, mxf->index_entries[i].flags);
966 put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
967 for (k = 0; k < s->nb_streams; k++) {
968 if (mxf->index_entries[i].slice_offset[k])
969 put_be32(pb, mxf->index_entries[i].slice_offset[k]);
976 static void mxf_write_partition(AVFormatContext *s, int bodysid,
977 int indexsid, unsigned index_byte_count,
978 const uint8_t *key, int write_metadata)
980 MXFContext *mxf = s->priv_data;
981 ByteIOContext *pb = s->pb;
982 int64_t header_byte_count_offset;
985 put_buffer(pb, key, 16);
987 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
989 // write partition value
990 put_be16(pb, 1); // majorVersion
991 put_be16(pb, 2); // minorVersion
992 put_be32(pb, KAG_SIZE); // KAGSize
994 put_be64(pb, url_ftell(pb) - 25); // thisPartition
995 put_be64(pb, 0); // previousPartition
997 put_be64(pb, mxf->footer_partition_offset); // footerPartition
1000 header_byte_count_offset = url_ftell(pb);
1001 put_be64(pb, 0); // headerByteCount, update later
1004 put_be64(pb, index_byte_count); // indexByteCount
1005 put_be32(pb, indexsid); // indexSID
1006 put_be64(pb, 0); // bodyOffset
1008 put_be32(pb, bodysid); // bodySID
1009 put_buffer(pb, op1a_ul, 16); // operational pattern
1011 // essence container
1012 mxf_write_essence_container_refs(s);
1014 if (write_metadata) {
1015 // mark the start of the headermetadata and calculate metadata size
1016 int64_t pos, start = url_ftell(s->pb);
1017 unsigned header_byte_count;
1019 mxf_write_primer_pack(s);
1020 mxf_write_header_metadata_sets(s);
1021 pos = url_ftell(s->pb);
1022 header_byte_count = pos - start + klv_fill_size(s);
1024 // update header_byte_count
1025 url_fseek(pb, header_byte_count_offset, SEEK_SET);
1026 put_be64(pb, header_byte_count);
1027 url_fseek(pb, pos, SEEK_SET);
1030 put_flush_packet(pb);
1033 static const UID mxf_mpeg2_codec_uls[] = {
1034 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1035 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1036 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1037 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1038 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1039 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1040 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1041 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1044 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1046 if (avctx->profile == 4) { // Main
1047 if (avctx->level == 8) // Main
1048 return avctx->gop_size ?
1049 &mxf_mpeg2_codec_uls[1] :
1050 &mxf_mpeg2_codec_uls[0];
1051 else if (avctx->level == 4) // High
1052 return avctx->gop_size ?
1053 &mxf_mpeg2_codec_uls[5] :
1054 &mxf_mpeg2_codec_uls[4];
1055 } else if (avctx->profile == 0) { // 422
1056 if (avctx->level == 5) // Main
1057 return avctx->gop_size ?
1058 &mxf_mpeg2_codec_uls[3] :
1059 &mxf_mpeg2_codec_uls[2];
1060 else if (avctx->level == 2) // High
1061 return avctx->gop_size ?
1062 &mxf_mpeg2_codec_uls[7] :
1063 &mxf_mpeg2_codec_uls[6];
1068 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1070 MXFContext *mxf = s->priv_data;
1071 MXFStreamContext *sc = st->priv_data;
1075 mxf->index_entries[mxf->edit_units_count].flags = 0;
1077 for(i = 0; i < pkt->size - 4; i++) {
1078 c = (c<<8) + pkt->data[i];
1080 if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1081 st->codec->profile = pkt->data[i+1] & 0x07;
1082 st->codec->level = pkt->data[i+2] >> 4;
1083 } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1084 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1087 } else if (c == 0x1b8) { // gop
1088 if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1089 mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1090 } else if (c == 0x1b3) { // seq
1091 mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1092 } else if (c == 0x100) { // pic
1093 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1094 if (pict_type == 2) { // P frame
1095 mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1096 st->codec->gop_size = 1;
1097 } else if (pict_type == 3) { // B frame
1098 mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1099 sc->temporal_reordering = -1;
1100 } else if (!pict_type) {
1101 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1106 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1107 return !!sc->codec_ul;
1110 static int ff_audio_interleave_init(AVFormatContext *s,
1111 const int *samples_per_frame,
1112 AVRational time_base)
1116 if (!samples_per_frame)
1119 for (i = 0; i < s->nb_streams; i++) {
1120 AVStream *st = s->streams[i];
1121 AudioInterleaveContext *aic = st->priv_data;
1123 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1124 aic->sample_size = (st->codec->channels *
1125 av_get_bits_per_sample(st->codec->codec_id)) / 8;
1126 if (!aic->sample_size) {
1127 av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
1130 aic->samples_per_frame = samples_per_frame;
1131 aic->samples = aic->samples_per_frame;
1132 aic->time_base = time_base;
1134 av_fifo_init(&aic->fifo, 100 * *aic->samples);
1141 static void ff_audio_interleave_close(AVFormatContext *s)
1144 for (i = 0; i < s->nb_streams; i++) {
1145 AVStream *st = s->streams[i];
1146 AudioInterleaveContext *aic = st->priv_data;
1148 if (st->codec->codec_type == CODEC_TYPE_AUDIO)
1149 av_fifo_free(&aic->fifo);
1153 static uint64_t mxf_parse_timestamp(time_t timestamp)
1155 struct tm *time = localtime(×tamp);
1156 return (uint64_t)(time->tm_year+1900) << 48 |
1157 (uint64_t)(time->tm_mon+1) << 40 |
1158 (uint64_t) time->tm_mday << 32 |
1159 time->tm_hour << 24 |
1160 time->tm_min << 16 |
1164 static int mxf_write_header(AVFormatContext *s)
1166 MXFContext *mxf = s->priv_data;
1168 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1169 const int *samples_per_frame = NULL;
1171 if (s->nb_streams > 17) {
1172 av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1176 for (i = 0; i < s->nb_streams; i++) {
1177 AVStream *st = s->streams[i];
1178 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1180 return AVERROR(ENOMEM);
1183 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1184 if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1185 samples_per_frame = PAL_samples_per_frame;
1186 mxf->time_base = (AVRational){ 1, 25 };
1187 } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1188 samples_per_frame = NTSC_samples_per_frame;
1189 mxf->time_base = (AVRational){ 1001, 30000 };
1191 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1194 mxf->edit_unit_start = st->index;
1195 av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1196 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1197 if (st->codec->sample_rate != 48000) {
1198 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1201 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1205 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1206 if (sc->index == -1) {
1207 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1208 "codec not currently supported in container\n", i);
1212 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1214 if (!present[sc->index]) {
1215 mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1216 present[sc->index] = 1;
1218 present[sc->index]++;
1219 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1220 sc->track_essence_element_key[15] = present[sc->index];
1221 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1224 for (i = 0; i < s->nb_streams; i++) {
1225 MXFStreamContext *sc = s->streams[i]->priv_data;
1226 // update element count
1227 sc->track_essence_element_key[13] = present[sc->index];
1228 sc->order = AV_RB32(sc->track_essence_element_key+12);
1231 mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1233 if (!samples_per_frame)
1234 samples_per_frame = PAL_samples_per_frame;
1236 if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1242 static void mxf_write_klv_fill(AVFormatContext *s)
1244 unsigned pad = klv_fill_size(s);
1246 put_buffer(s->pb, klv_fill_key, 16);
1248 pad -= klv_ber_length(pad);
1249 klv_encode_ber_length(s->pb, pad);
1250 for (; pad > 7; pad -= 8)
1254 assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1258 static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1259 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 };
1261 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1263 return (0 << 31) | // color frame flag
1264 (0 << 30) | // drop frame flag
1265 ( ((frame % fps) / 10) << 28) | // tens of frames
1266 ( ((frame % fps) % 10) << 24) | // units of frames
1267 (0 << 23) | // field phase (NTSC), b0 (PAL)
1268 ((((frame / fps) % 60) / 10) << 20) | // tens of seconds
1269 ((((frame / fps) % 60) % 10) << 16) | // units of seconds
1270 (0 << 15) | // b0 (NTSC), b2 (PAL)
1271 ((((frame / (fps * 60)) % 60) / 10) << 12) | // tens of minutes
1272 ((((frame / (fps * 60)) % 60) % 10) << 8) | // units of minutes
1274 (0 << 6) | // b2 (NSC), field phase (PAL)
1275 ((((frame / (fps * 3600) % 24)) / 10) << 4) | // tens of hours
1276 ( (frame / (fps * 3600) % 24)) % 10; // units of hours
1279 static void mxf_write_system_item(AVFormatContext *s)
1281 MXFContext *mxf = s->priv_data;
1282 ByteIOContext *pb = s->pb;
1283 unsigned fps, frame;
1286 frame = mxf->edit_units_count;
1288 // write system metadata pack
1289 put_buffer(pb, system_metadata_pack_key, 16);
1290 klv_encode_ber_length(pb, 57);
1291 put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1292 put_byte(pb, 0x04); // content package rate
1293 put_byte(pb, 0x00); // content package type
1294 put_be16(pb, 0x00); // channel handle
1295 put_be16(pb, frame); // continuity count
1296 if (mxf->essence_container_count > 1)
1297 put_buffer(pb, multiple_desc_ul, 16);
1299 put_buffer(pb, mxf_essence_container_uls[mxf->essence_containers_indices[0]].container_ul, 16);
1302 put_be64(pb, 0); // creation date/time stamp
1305 if (mxf->time_base.den == 30000) fps = 30;
1308 put_byte(pb, 0x81); // SMPTE 12M time code
1309 time_code = ff_framenum_to_12m_time_code(frame, 0, fps);
1310 put_be32(pb, time_code);
1311 put_be32(pb, 0); // binary group data
1314 // write system metadata package set
1315 put_buffer(pb, system_metadata_package_set_key, 16);
1316 klv_encode_ber_length(pb, 35);
1317 put_byte(pb, 0x83); // UMID
1319 mxf_write_umid(pb, SourcePackage, 0);
1322 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1324 MXFContext *mxf = s->priv_data;
1325 ByteIOContext *pb = s->pb;
1326 AVStream *st = s->streams[pkt->stream_index];
1327 MXFStreamContext *sc = st->priv_data;
1329 if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1330 mxf->index_entries = av_realloc(mxf->index_entries,
1331 (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1332 sizeof(*mxf->index_entries));
1333 if (!mxf->index_entries) {
1334 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1339 if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1340 if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1341 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1346 if (!mxf->header_written) {
1347 mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
1348 mxf->header_written = 1;
1351 mxf_write_klv_fill(s);
1353 if (st->index == mxf->edit_unit_start) {
1354 mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1355 mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
1357 mxf_write_system_item(s);
1358 mxf_write_klv_fill(s);
1360 mxf->edit_units_count++;
1362 mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
1363 url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1366 put_buffer(pb, sc->track_essence_element_key, 16); // write key
1367 klv_encode_ber_length(pb, pkt->size); // write length
1368 put_buffer(pb, pkt->data, pkt->size); // write value
1370 sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1372 put_flush_packet(pb);
1376 static void mxf_write_random_index_pack(AVFormatContext *s)
1378 MXFContext *mxf = s->priv_data;
1379 ByteIOContext *pb = s->pb;
1380 uint64_t pos = url_ftell(pb);
1382 put_buffer(pb, random_index_pack_key, 16);
1383 klv_encode_ber_length(pb, 28);
1385 put_be32(pb, 1); // BodySID of header partition
1386 put_be64(pb, 0); // offset of header partition
1388 put_be32(pb, 0); // BodySID of footer partition
1389 put_be64(pb, mxf->footer_partition_offset);
1391 put_be32(pb, url_ftell(pb) - pos + 4);
1394 static int mxf_write_footer(AVFormatContext *s)
1396 MXFContext *mxf = s->priv_data;
1397 ByteIOContext *pb = s->pb;
1398 unsigned index_byte_count =
1399 109 + (s->nb_streams+1)*6 +
1400 mxf->edit_units_count*(11+(s->nb_streams-1)*4);
1402 // add encoded ber length
1403 index_byte_count += 16 + klv_ber_length(index_byte_count);
1405 mxf_write_klv_fill(s);
1407 mxf->footer_partition_offset = url_ftell(pb);
1408 mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
1410 mxf_write_index_table_segment(s);
1412 mxf_write_random_index_pack(s);
1414 if (!url_is_streamed(s->pb)) {
1415 url_fseek(pb, 0, SEEK_SET);
1416 mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
1419 ff_audio_interleave_close(s);
1425 static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1426 int stream_index, int flush)
1428 AVStream *st = s->streams[stream_index];
1429 AudioInterleaveContext *aic = st->priv_data;
1431 int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1432 if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1435 av_new_packet(pkt, size);
1436 av_fifo_read(&aic->fifo, pkt->data, size);
1438 pkt->dts = pkt->pts = aic->dts;
1439 pkt->duration = av_rescale_q(*aic->samples, st->time_base, aic->time_base);
1440 pkt->stream_index = stream_index;
1441 aic->dts += pkt->duration;
1445 aic->samples = aic->samples_per_frame;
1450 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1453 int stream_count = 0;
1454 int streams[MAX_STREAMS];
1456 memset(streams, 0, sizeof(streams));
1457 pktl = s->packet_buffer;
1459 //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1460 if (!streams[pktl->pkt.stream_index])
1462 streams[pktl->pkt.stream_index]++;
1466 if (stream_count && (s->nb_streams == stream_count || flush)) {
1467 pktl = s->packet_buffer;
1468 if (s->nb_streams != stream_count) {
1469 MXFContext *mxf = s->priv_data;
1470 AVPacketList *first = NULL;
1471 // find first packet in edit unit
1473 AVStream *st = s->streams[pktl->pkt.stream_index];
1474 if (st->index == mxf->edit_unit_start)
1480 // purge packet queue
1482 AVPacketList *next = pktl->next;
1483 av_free_packet(&pktl->pkt);
1493 //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1494 s->packet_buffer = pktl->next;
1499 av_init_packet(out);
1504 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1506 MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
1507 MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1509 return next->dts > pkt->dts ||
1510 (next->dts == pkt->dts && sc->order < sc2->order);
1513 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1518 AVStream *st = s->streams[pkt->stream_index];
1519 AudioInterleaveContext *aic = st->priv_data;
1520 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1521 av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
1523 // rewrite pts and dts to be decoded time line position
1524 pkt->pts = pkt->dts = aic->dts;
1525 aic->dts += pkt->duration;
1526 ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
1531 for (i = 0; i < s->nb_streams; i++) {
1532 AVStream *st = s->streams[i];
1533 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1535 while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1536 ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1540 return mxf_interleave_get_packet(s, out, pkt, flush);
1543 AVOutputFormat mxf_muxer = {
1545 NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1550 CODEC_ID_MPEG2VIDEO,