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
35 #include "libavutil/fifo.h"
38 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
39 static const int PAL_samples_per_frame[] = { 1920, 0 };
41 #define MXF_INDEX_CLUSTER_SIZE 4096
45 unsigned fifo_size; ///< current fifo size allocated
46 uint64_t dts; ///< current dts
47 int sample_size; ///< size of one sample all channels included
48 const int *samples_per_frame; ///< must be 0 terminated
49 const int *samples; ///< current samples per frame, pointer to samples_per_frame
50 } AudioInterleaveContext;
60 unsigned slice_offset[17]; // one video, 16 audio
64 AudioInterleaveContext aic;
65 UID track_essence_element_key;
66 int index; ///< index in mxf_essence_container_uls table
69 int order; ///< interleaving order if dts are equal
70 int interlaced; ///< wether picture is interlaced
71 int temporal_reordering;
80 } MXFContainerEssenceEntry;
82 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
83 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
84 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
86 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
87 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
88 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
89 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
90 CODEC_ID_MPEG2VIDEO, mxf_write_mpegvideo_desc },
91 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
92 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
93 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
94 CODEC_ID_PCM_S16LE, mxf_write_aes3_desc },
95 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
96 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
97 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
98 CODEC_ID_PCM_S16LE, mxf_write_wav_desc },
99 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
100 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
101 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
102 CODEC_ID_NONE, NULL },
105 typedef struct MXFContext {
106 int64_t footer_partition_offset;
107 int essence_container_count;
108 uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
109 AVRational time_base;
111 MXFIndexEntry *index_entries;
112 unsigned edit_units_count;
113 int edit_unit_start; ///< index of the stream starting edit unit
116 static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
117 static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
120 * complete key for operation pattern, partitions, and primer pack
122 static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
123 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
124 static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
125 static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
126 static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
129 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
130 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
133 * partial key for header metadata
135 static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
137 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
140 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
142 static const MXFLocalTagPair mxf_local_tag_batch[] = {
144 { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
145 { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
146 { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
147 { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
148 { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
149 { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
150 { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
151 { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
153 { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
154 { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
155 { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
156 { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
157 { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
158 { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
160 { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
161 { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
162 // Essence Container Data
163 { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
164 { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
166 { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
167 { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
168 { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
169 { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
170 { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
172 { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
173 { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
174 { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
175 { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
176 { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
178 { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
179 { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
180 { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
182 { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
183 { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
184 { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
186 { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
187 { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
188 { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
189 { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
190 // Generic Picture Essence Descriptor
191 { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
192 { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
193 { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
194 { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
195 { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
196 { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
197 { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
198 { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
199 // Generic Sound Essence Descriptor
200 { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
201 { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
202 { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
203 { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
204 { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
205 // Index Table Segment
206 { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
207 { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
208 { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
209 { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
210 { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
211 { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
212 { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
213 { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
214 // MPEG video Descriptor
215 { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
216 // Wave Audio Essence Descriptor
217 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
218 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
221 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
223 put_buffer(pb, uuid_base, 12);
228 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
230 put_buffer(pb, umid_base, 16);
231 mxf_write_uuid(pb, type, value);
234 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
236 put_be32(pb, ref_count);
240 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
242 // Determine the best BER size
250 size = (av_log2(len) >> 3) + 1;
253 put_byte(pb, 0x80 + size);
256 put_byte(pb, len >> 8 * size & 0xff);
262 * Get essence container ul index
264 static int mxf_get_essence_container_ul_index(enum CodecID id)
267 for (i = 0; i < FF_ARRAY_ELEMS(mxf_essence_container_uls); i++)
268 if (mxf_essence_container_uls[i].id == id)
273 static void mxf_write_primer_pack(AVFormatContext *s)
275 ByteIOContext *pb = s->pb;
276 int local_tag_number, i = 0;
278 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
280 put_buffer(pb, primer_pack_key, 16);
281 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
283 put_be32(pb, local_tag_number); // local_tag num
284 put_be32(pb, 18); // item size, always 18 according to the specs
286 for (i = 0; i < local_tag_number; i++) {
287 put_be16(pb, mxf_local_tag_batch[i].local_tag);
288 put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
292 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
298 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
300 put_buffer(pb, header_metadata_key, 13);
304 static void mxf_free(AVFormatContext *s)
308 for (i = 0; i < s->nb_streams; i++) {
309 AVStream *st = s->streams[i];
310 av_freep(&st->priv_data);
314 static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
316 const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
317 while (uls->type != CODEC_TYPE_DATA) {
318 if (type == uls->type)
325 static void mxf_write_essence_container_refs(AVFormatContext *s)
327 MXFContext *c = s->priv_data;
328 ByteIOContext *pb = s->pb;
331 mxf_write_refs_count(pb, c->essence_container_count);
332 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
333 for (i = 0; i < c->essence_container_count; i++) {
334 put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
335 PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
339 static void mxf_write_preface(AVFormatContext *s)
341 MXFContext *mxf = s->priv_data;
342 ByteIOContext *pb = s->pb;
344 mxf_write_metadata_key(pb, 0x012f00);
345 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
346 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
348 // write preface set uid
349 mxf_write_local_tag(pb, 16, 0x3C0A);
350 mxf_write_uuid(pb, Preface, 0);
351 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
353 // write create date as unknown
354 mxf_write_local_tag(pb, 8, 0x3B02);
358 mxf_write_local_tag(pb, 2, 0x3B05);
361 // write identification_refs
362 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
363 mxf_write_refs_count(pb, 1);
364 mxf_write_uuid(pb, Identification, 0);
366 // write content_storage_refs
367 mxf_write_local_tag(pb, 16, 0x3B03);
368 mxf_write_uuid(pb, ContentStorage, 0);
370 mxf_write_local_tag(pb, 16, 0x3B09);
371 put_buffer(pb, op1a_ul, 16);
373 // write essence_container_refs
374 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
375 mxf_write_essence_container_refs(s);
377 // write dm_scheme_refs
378 mxf_write_local_tag(pb, 8, 0x3B0B);
383 * Write a local tag containing an ascii string as utf-16
385 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
387 int i, size = strlen(value);
388 mxf_write_local_tag(pb, size*2, tag);
389 for (i = 0; i < size; i++)
390 put_be16(pb, value[i]);
393 static void mxf_write_identification(AVFormatContext *s)
395 ByteIOContext *pb = s->pb;
396 const char *company = "FFmpeg";
397 const char *product = "OP1a Muxer";
401 mxf_write_metadata_key(pb, 0x013000);
402 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
404 version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
405 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
406 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
407 klv_encode_ber_length(pb, length);
410 mxf_write_local_tag(pb, 16, 0x3C0A);
411 mxf_write_uuid(pb, Identification, 0);
412 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
414 // write generation uid
415 mxf_write_local_tag(pb, 16, 0x3C09);
416 mxf_write_uuid(pb, Identification, 1);
418 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
419 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
420 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
423 mxf_write_local_tag(pb, 16, 0x3C05);
424 mxf_write_uuid(pb, Identification, 2);
426 // write modified date
427 mxf_write_local_tag(pb, 8, 0x3C06);
431 static void mxf_write_content_storage(AVFormatContext *s)
433 ByteIOContext *pb = s->pb;
435 mxf_write_metadata_key(pb, 0x011800);
436 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
437 klv_encode_ber_length(pb, 92);
440 mxf_write_local_tag(pb, 16, 0x3C0A);
441 mxf_write_uuid(pb, ContentStorage, 0);
442 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
444 // write package reference
445 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
446 mxf_write_refs_count(pb, 2);
447 mxf_write_uuid(pb, MaterialPackage, 0);
448 mxf_write_uuid(pb, SourcePackage, 0);
450 // write essence container data
451 mxf_write_local_tag(pb, 8 + 16, 0x1902);
452 mxf_write_refs_count(pb, 1);
453 mxf_write_uuid(pb, EssenceContainerData, 0);
456 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
458 ByteIOContext *pb = s->pb;
459 MXFStreamContext *sc = st->priv_data;
461 mxf_write_metadata_key(pb, 0x013b00);
462 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
463 klv_encode_ber_length(pb, 80);
466 mxf_write_local_tag(pb, 16, 0x3C0A);
467 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
468 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
471 mxf_write_local_tag(pb, 4, 0x4801);
472 put_be32(pb, st->index);
474 // write track number
475 mxf_write_local_tag(pb, 4, 0x4804);
476 if (type == MaterialPackage)
477 put_be32(pb, 0); // track number of material package is 0
479 put_buffer(pb, sc->track_essence_element_key + 12, 4);
481 mxf_write_local_tag(pb, 8, 0x4B01);
482 put_be32(pb, st->time_base.den);
483 put_be32(pb, st->time_base.num);
486 mxf_write_local_tag(pb, 8, 0x4B02);
489 // write sequence refs
490 mxf_write_local_tag(pb, 16, 0x4803);
491 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
494 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
496 const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
497 MXFStreamContext *sc = st->priv_data;
499 // find data define uls
500 mxf_write_local_tag(pb, 16, 0x0201);
501 put_buffer(pb, data_def_ul->uid, 16);
504 mxf_write_local_tag(pb, 8, 0x0202);
505 put_be64(pb, sc->duration);
508 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
510 ByteIOContext *pb = s->pb;
512 mxf_write_metadata_key(pb, 0x010f00);
513 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
514 klv_encode_ber_length(pb, 80);
516 mxf_write_local_tag(pb, 16, 0x3C0A);
517 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
519 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
520 mxf_write_common_fields(pb, st);
522 // write structural component
523 mxf_write_local_tag(pb, 16 + 8, 0x1001);
524 mxf_write_refs_count(pb, 1);
525 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
528 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
530 ByteIOContext *pb = s->pb;
533 mxf_write_metadata_key(pb, 0x011100);
534 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
535 klv_encode_ber_length(pb, 108);
538 mxf_write_local_tag(pb, 16, 0x3C0A);
539 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
541 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
542 mxf_write_common_fields(pb, st);
544 // write start_position
545 mxf_write_local_tag(pb, 8, 0x1201);
548 // write source package uid, end of the reference
549 mxf_write_local_tag(pb, 32, 0x1101);
550 if (type == SourcePackage) {
551 for (i = 0; i < 4; i++)
554 mxf_write_umid(pb, SourcePackage, 0);
556 // write source track id
557 mxf_write_local_tag(pb, 4, 0x1102);
558 if (type == SourcePackage)
561 put_be32(pb, st->index);
564 static void mxf_write_multi_descriptor(AVFormatContext *s)
566 ByteIOContext *pb = s->pb;
569 mxf_write_metadata_key(pb, 0x014400);
570 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
571 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
573 mxf_write_local_tag(pb, 16, 0x3C0A);
574 mxf_write_uuid(pb, MultipleDescriptor, 0);
575 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
578 mxf_write_local_tag(pb, 8, 0x3001);
579 put_be32(pb, s->streams[0]->time_base.den);
580 put_be32(pb, s->streams[0]->time_base.num);
582 // write essence container ul
583 mxf_write_local_tag(pb, 16, 0x3004);
584 put_buffer(pb, multiple_desc_ul, 16);
586 // write sub descriptor refs
587 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
588 mxf_write_refs_count(pb, s->nb_streams);
589 for (i = 0; i < s->nb_streams; i++)
590 mxf_write_uuid(pb, SubDescriptor, i);
593 static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key, unsigned size)
595 MXFStreamContext *sc = st->priv_data;
597 put_buffer(pb, key, 16);
598 klv_encode_ber_length(pb, size);
600 mxf_write_local_tag(pb, 16, 0x3C0A);
601 mxf_write_uuid(pb, SubDescriptor, st->index);
603 mxf_write_local_tag(pb, 4, 0x3006);
604 put_be32(pb, st->index);
606 mxf_write_local_tag(pb, 8, 0x3001);
607 put_be32(pb, st->time_base.den);
608 put_be32(pb, st->time_base.num);
610 mxf_write_local_tag(pb, 16, 0x3004);
611 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
614 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
615 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
616 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
618 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
620 MXFStreamContext *sc = st->priv_data;
621 ByteIOContext *pb = s->pb;
622 int stored_height = (st->codec->height+15)/16*16;
626 mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
628 mxf_write_local_tag(pb, 4, 0x3203);
629 put_be32(pb, st->codec->width);
631 mxf_write_local_tag(pb, 4, 0x3202);
632 put_be32(pb, stored_height>>sc->interlaced);
634 mxf_write_local_tag(pb, 4, 0x3209);
635 put_be32(pb, st->codec->width);
637 mxf_write_local_tag(pb, 4, 0x3208);
638 put_be32(pb, st->codec->height>>sc->interlaced);
641 mxf_write_local_tag(pb, 4, 0x8000);
642 put_be32(pb, st->codec->bit_rate);
645 mxf_write_local_tag(pb, 1, 0x320C);
646 put_byte(pb, sc->interlaced);
649 switch (st->codec->height) {
650 case 576: f1 = 23; f2 = 336; break;
651 case 608: f1 = 7; f2 = 320; break;
652 case 480: f1 = 20; f2 = 283; break;
653 case 512: f1 = 7; f2 = 270; break;
654 case 720: f1 = 26; f2 = 0; break; // progressive
655 case 1080: f1 = 21; f2 = 584; break;
656 default: f1 = 0; f2 = 0; break;
659 if (!sc->interlaced) {
664 mxf_write_local_tag(pb, 16, 0x320D);
665 put_be32(pb, sc->interlaced ? 2 : 1);
671 av_reduce(&dar.num, &dar.den,
672 st->codec->width*st->codec->sample_aspect_ratio.num,
673 st->codec->height*st->codec->sample_aspect_ratio.den,
676 mxf_write_local_tag(pb, 8, 0x320E);
677 put_be32(pb, dar.num);
678 put_be32(pb, dar.den);
680 mxf_write_local_tag(pb, 16, 0x3201);
681 put_buffer(pb, *sc->codec_ul, 16);
684 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
686 ByteIOContext *pb = s->pb;
688 mxf_write_generic_desc(pb, st, key, size);
691 mxf_write_local_tag(pb, 1, 0x3D02);
694 // write audio sampling rate
695 mxf_write_local_tag(pb, 8, 0x3D03);
696 put_be32(pb, st->codec->sample_rate);
699 mxf_write_local_tag(pb, 4, 0x3D07);
700 put_be32(pb, st->codec->channels);
702 mxf_write_local_tag(pb, 4, 0x3D01);
703 put_be32(pb, st->codec->bits_per_coded_sample);
706 static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
708 ByteIOContext *pb = s->pb;
710 mxf_write_generic_sound_desc(s, st, key, size);
712 mxf_write_local_tag(pb, 2, 0x3D0A);
713 put_be16(pb, st->codec->block_align);
716 mxf_write_local_tag(pb, 4, 0x3D09);
717 put_be32(pb, st->codec->block_align*st->codec->sample_rate);
720 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
722 mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
725 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
727 mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
730 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
732 ByteIOContext *pb = s->pb;
735 if (type == MaterialPackage) {
736 mxf_write_metadata_key(pb, 0x013600);
737 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
738 klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
740 mxf_write_metadata_key(pb, 0x013700);
741 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
742 klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
746 mxf_write_local_tag(pb, 16, 0x3C0A);
747 mxf_write_uuid(pb, type, 0);
748 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
749 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
751 // write package umid
752 mxf_write_local_tag(pb, 32, 0x4401);
753 mxf_write_umid(pb, type, 0);
754 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
757 mxf_write_local_tag(pb, 8, 0x4405);
760 // write modified date
761 mxf_write_local_tag(pb, 8, 0x4404);
765 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
766 mxf_write_refs_count(pb, s->nb_streams);
767 for (i = 0; i < s->nb_streams; i++)
768 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
770 // write multiple descriptor reference
771 if (type == SourcePackage) {
772 mxf_write_local_tag(pb, 16, 0x4701);
773 if (s->nb_streams > 1) {
774 mxf_write_uuid(pb, MultipleDescriptor, 0);
775 mxf_write_multi_descriptor(s);
777 mxf_write_uuid(pb, SubDescriptor, 0);
780 for (i = 0; i < s->nb_streams; i++) {
781 AVStream *st = s->streams[i];
782 mxf_write_track(s, st, type);
783 mxf_write_sequence(s, st, type);
784 mxf_write_structural_component(s, st, type);
786 if (type == SourcePackage) {
787 MXFStreamContext *sc = st->priv_data;
788 mxf_essence_container_uls[sc->index].write_desc(s, st);
793 static int mxf_write_essence_container_data(AVFormatContext *s)
795 ByteIOContext *pb = s->pb;
797 mxf_write_metadata_key(pb, 0x012300);
798 klv_encode_ber_length(pb, 72);
800 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
801 mxf_write_uuid(pb, EssenceContainerData, 0);
803 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
804 mxf_write_umid(pb, SourcePackage, 0);
806 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
809 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
815 static int mxf_write_header_metadata_sets(AVFormatContext *s)
817 mxf_write_preface(s);
818 mxf_write_identification(s);
819 mxf_write_content_storage(s);
820 mxf_write_package(s, MaterialPackage);
821 mxf_write_package(s, SourcePackage);
822 mxf_write_essence_container_data(s);
826 static int mxf_write_index_table_segment(AVFormatContext *s)
828 MXFContext *mxf = s->priv_data;
829 ByteIOContext *pb = s->pb;
830 int i, j, k, ret, key_offset = 0;
831 int temporal_reordering = 0;
833 av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
835 put_buffer(pb, index_table_segment_key, 16);
836 ret = klv_encode_ber_length(pb, 109 + s->nb_streams*6 +
837 mxf->edit_units_count*(11+(s->nb_streams-1)*4));
840 mxf_write_local_tag(pb, 16, 0x3C0A);
841 mxf_write_uuid(pb, IndexTableSegment, 0);
844 mxf_write_local_tag(pb, 8, 0x3F0B);
845 put_be32(pb, mxf->time_base.num);
846 put_be32(pb, mxf->time_base.den);
848 // index start position
849 mxf_write_local_tag(pb, 8, 0x3F0C);
853 mxf_write_local_tag(pb, 8, 0x3F0D);
854 put_be64(pb, mxf->edit_units_count);
856 // edit unit byte count
857 mxf_write_local_tag(pb, 4, 0x3F05);
861 mxf_write_local_tag(pb, 4, 0x3F06);
865 mxf_write_local_tag(pb, 4, 0x3F07);
869 mxf_write_local_tag(pb, 1, 0x3F08);
870 put_byte(pb, s->nb_streams-1);
873 mxf_write_local_tag(pb, 8 + s->nb_streams*6, 0x3F09);
874 put_be32(pb, s->nb_streams); // num of entries
875 put_be32(pb, 6); // size of one entry
876 for (i = 0; i < s->nb_streams; i++) {
877 AVStream *st = s->streams[i];
878 MXFStreamContext *sc = st->priv_data;
879 put_byte(pb, sc->temporal_reordering);
880 if (sc->temporal_reordering)
881 temporal_reordering = 1;
883 put_be32(pb, 0); // element delta
886 mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
887 put_be32(pb, mxf->edit_units_count); // num of entries
888 put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
889 for (i = 0; i < mxf->edit_units_count; i++) {
890 if (mxf->index_entries[i].flags & 0x40)
892 if (temporal_reordering) {
893 int temporal_offset = 0;
894 for (j = i+1; j < mxf->edit_units_count; j++) {
896 if (mxf->index_entries[j].flags & 0x10) { // backward prediction
897 // next is not b, so is reordered
898 if (!(mxf->index_entries[i+1].flags & 0x10))
899 temporal_offset = -temporal_offset;
903 put_byte(pb, temporal_offset);
906 put_byte(pb, key_offset);
907 put_byte(pb, mxf->index_entries[i].flags);
909 put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
910 for (k = 0; k < s->nb_streams; k++) {
911 if (mxf->index_entries[i].slice_offset[k])
912 put_be32(pb, mxf->index_entries[i].slice_offset[k]);
920 static void mxf_write_partition(AVFormatContext *s, int bodysid, int indexsid,
921 const uint8_t *key, int write_metadata)
923 MXFContext *mxf = s->priv_data;
924 ByteIOContext *pb = s->pb;
925 int64_t header_byte_count_offset;
928 put_buffer(pb, key, 16);
930 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
932 // write partition value
933 put_be16(pb, 1); // majorVersion
934 put_be16(pb, 2); // minorVersion
935 put_be32(pb, 1); // kagSize
937 put_be64(pb, url_ftell(pb) - 25); // thisPartition
938 put_be64(pb, 0); // previousPartition
940 put_be64(pb, mxf->footer_partition_offset); // footerPartition
943 header_byte_count_offset = url_ftell(pb);
944 put_be64(pb, 0); // headerByteCount, update later
947 put_be64(pb, indexsid ? 19 + 109 + s->nb_streams*6 +
948 mxf->edit_units_count*(11+(s->nb_streams-1)*4) : 0); // indexByteCount
949 put_be32(pb, indexsid); // indexSID
950 put_be64(pb, 0); // bodyOffset
952 put_be32(pb, bodysid); // bodySID
953 put_buffer(pb, op1a_ul, 16); // operational pattern
956 mxf_write_essence_container_refs(s);
958 if (write_metadata) {
959 // mark the start of the headermetadata and calculate metadata size
960 int64_t pos, start = url_ftell(s->pb);
961 mxf_write_primer_pack(s);
962 mxf_write_header_metadata_sets(s);
963 pos = url_ftell(s->pb);
964 // update header_byte_count
965 url_fseek(pb, header_byte_count_offset, SEEK_SET);
966 put_be64(pb, pos - start);
967 url_fseek(pb, pos, SEEK_SET);
970 put_flush_packet(pb);
973 static const UID mxf_mpeg2_codec_uls[] = {
974 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
975 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
976 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
977 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
978 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
979 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
980 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
981 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
984 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
986 if (avctx->profile == 4) { // Main
987 if (avctx->level == 8) // Main
988 return avctx->gop_size ?
989 &mxf_mpeg2_codec_uls[1] :
990 &mxf_mpeg2_codec_uls[0];
991 else if (avctx->level == 4) // High
992 return avctx->gop_size ?
993 &mxf_mpeg2_codec_uls[5] :
994 &mxf_mpeg2_codec_uls[4];
995 } else if (avctx->profile == 0) { // 422
996 if (avctx->level == 5) // Main
997 return avctx->gop_size ?
998 &mxf_mpeg2_codec_uls[3] :
999 &mxf_mpeg2_codec_uls[2];
1000 else if (avctx->level == 2) // High
1001 return avctx->gop_size ?
1002 &mxf_mpeg2_codec_uls[7] :
1003 &mxf_mpeg2_codec_uls[6];
1008 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1010 MXFContext *mxf = s->priv_data;
1011 MXFStreamContext *sc = st->priv_data;
1015 mxf->index_entries[mxf->edit_units_count].flags = 0;
1017 for(i = 0; i < pkt->size - 4; i++) {
1018 c = (c<<8) + pkt->data[i];
1020 if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1021 st->codec->profile = pkt->data[i+1] & 0x07;
1022 st->codec->level = pkt->data[i+2] >> 4;
1023 } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1024 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1027 } else if (c == 0x1b8) { // gop
1028 if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1029 mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1030 } else if (c == 0x1b3) { // seq
1031 mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1032 } else if (c == 0x100) { // pic
1033 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1034 if (pict_type == 2) { // P frame
1035 mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1036 st->codec->gop_size = 1;
1037 } else if (pict_type == 3) { // B frame
1038 mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1039 sc->temporal_reordering = -1;
1040 } else if (!pict_type) {
1041 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1046 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1047 return !!sc->codec_ul;
1050 static int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame)
1054 if (!samples_per_frame)
1057 for (i = 0; i < s->nb_streams; i++) {
1058 AVStream *st = s->streams[i];
1059 AudioInterleaveContext *aic = st->priv_data;
1061 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1062 aic->sample_size = (st->codec->channels *
1063 av_get_bits_per_sample(st->codec->codec_id)) / 8;
1064 if (!aic->sample_size) {
1065 av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
1068 aic->samples_per_frame = samples_per_frame;
1069 aic->samples = aic->samples_per_frame;
1071 av_fifo_init(&aic->fifo, 100 * *aic->samples);
1078 static void ff_audio_interleave_close(AVFormatContext *s)
1081 for (i = 0; i < s->nb_streams; i++) {
1082 AVStream *st = s->streams[i];
1083 AudioInterleaveContext *aic = st->priv_data;
1085 if (st->codec->codec_type == CODEC_TYPE_AUDIO)
1086 av_fifo_free(&aic->fifo);
1090 static int mxf_write_header(AVFormatContext *s)
1092 MXFContext *mxf = s->priv_data;
1094 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1095 const int *samples_per_frame = NULL;
1097 if (s->nb_streams > 17) {
1098 av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1102 for (i = 0; i < s->nb_streams; i++) {
1103 AVStream *st = s->streams[i];
1104 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1106 return AVERROR(ENOMEM);
1109 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1110 if (!av_cmp_q(st->codec->time_base, (AVRational){ 1, 25 })) {
1111 samples_per_frame = PAL_samples_per_frame;
1112 mxf->time_base = (AVRational){ 1, 25 };
1113 } else if (!av_cmp_q(st->codec->time_base, (AVRational){ 1001, 30000 })) {
1114 samples_per_frame = NTSC_samples_per_frame;
1115 mxf->time_base = (AVRational){ 1001, 30000 };
1117 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1120 mxf->edit_unit_start = st->index;
1121 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1122 if (st->codec->sample_rate != 48000) {
1123 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1129 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1130 if (sc->index == -1) {
1131 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1132 "codec not currently supported in container\n", i);
1136 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1138 if (!present[sc->index]) {
1139 mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1140 present[sc->index] = 1;
1142 present[sc->index]++;
1143 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1144 sc->track_essence_element_key[15] = present[sc->index];
1145 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1148 for (i = 0; i < s->nb_streams; i++) {
1149 MXFStreamContext *sc = s->streams[i]->priv_data;
1150 av_set_pts_info(s->streams[i], 64, mxf->time_base.num, mxf->time_base.den);
1151 // update element count
1152 sc->track_essence_element_key[13] = present[sc->index];
1153 sc->order = AV_RB32(sc->track_essence_element_key+12);
1156 if (!samples_per_frame)
1157 samples_per_frame = PAL_samples_per_frame;
1159 if (ff_audio_interleave_init(s, samples_per_frame) < 0)
1165 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1167 MXFContext *mxf = s->priv_data;
1168 ByteIOContext *pb = s->pb;
1169 AVStream *st = s->streams[pkt->stream_index];
1170 MXFStreamContext *sc = st->priv_data;
1172 if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1173 mxf->index_entries = av_realloc(mxf->index_entries,
1174 (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1175 sizeof(*mxf->index_entries));
1176 if (!mxf->index_entries) {
1177 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1182 if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1183 if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1184 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1189 if (!mxf->header_written) {
1190 mxf_write_partition(s, 1, 0, header_open_partition_key, 1);
1191 mxf->header_written = 1;
1194 if (st->index == mxf->edit_unit_start) {
1195 mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1196 mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
1197 mxf->edit_units_count++;
1199 mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
1200 url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1203 put_buffer(pb, sc->track_essence_element_key, 16); // write key
1204 klv_encode_ber_length(pb, pkt->size); // write length
1205 put_buffer(pb, pkt->data, pkt->size); // write value
1207 sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1209 put_flush_packet(pb);
1213 static void mxf_write_random_index_pack(AVFormatContext *s)
1215 MXFContext *mxf = s->priv_data;
1216 ByteIOContext *pb = s->pb;
1217 uint64_t pos = url_ftell(pb);
1219 put_buffer(pb, random_index_pack_key, 16);
1220 klv_encode_ber_length(pb, 28);
1222 put_be32(pb, 1); // BodySID of header partition
1223 put_be64(pb, 0); // offset of header partition
1225 put_be32(pb, 0); // BodySID of footer partition
1226 put_be64(pb, mxf->footer_partition_offset);
1228 put_be32(pb, url_ftell(pb) - pos + 4);
1231 static int mxf_write_footer(AVFormatContext *s)
1233 MXFContext *mxf = s->priv_data;
1234 ByteIOContext *pb = s->pb;
1236 mxf->footer_partition_offset = url_ftell(pb);
1237 mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1239 mxf_write_index_table_segment(s);
1241 mxf_write_random_index_pack(s);
1243 if (!url_is_streamed(s->pb)) {
1244 url_fseek(pb, 0, SEEK_SET);
1245 mxf_write_partition(s, 1, 0, header_closed_partition_key, 1);
1248 ff_audio_interleave_close(s);
1254 static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1255 int stream_index, int flush)
1257 AVStream *st = s->streams[stream_index];
1258 AudioInterleaveContext *aic = st->priv_data;
1260 int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1261 if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1264 av_new_packet(pkt, size);
1265 av_fifo_read(&aic->fifo, pkt->data, size);
1267 pkt->dts = pkt->pts = aic->dts;
1268 pkt->duration = av_rescale_q(*aic->samples,
1269 (AVRational){ 1, st->codec->sample_rate },
1271 pkt->stream_index = stream_index;
1272 aic->dts += pkt->duration;
1276 aic->samples = aic->samples_per_frame;
1281 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1284 int stream_count = 0;
1285 int streams[MAX_STREAMS];
1287 memset(streams, 0, sizeof(streams));
1288 pktl = s->packet_buffer;
1290 //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1291 if (!streams[pktl->pkt.stream_index])
1293 streams[pktl->pkt.stream_index]++;
1297 if (stream_count && (s->nb_streams == stream_count || flush)) {
1298 pktl = s->packet_buffer;
1299 if (s->nb_streams != stream_count) {
1300 MXFContext *mxf = s->priv_data;
1301 AVPacketList *first = NULL;
1302 // find first packet in edit unit
1304 AVStream *st = s->streams[pktl->pkt.stream_index];
1305 if (st->index == mxf->edit_unit_start)
1311 // purge packet queue
1313 AVPacketList *next = pktl->next;
1314 av_free_packet(&pktl->pkt);
1324 //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1325 s->packet_buffer = pktl->next;
1330 av_init_packet(out);
1335 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1337 AVStream *st = s->streams[pkt ->stream_index];
1338 AVStream *st2 = s->streams[next->stream_index];
1339 MXFStreamContext *sc = st ->priv_data;
1340 MXFStreamContext *sc2 = st2->priv_data;
1342 int64_t left = st2->time_base.num * (int64_t)st ->time_base.den;
1343 int64_t right = st ->time_base.num * (int64_t)st2->time_base.den;
1345 return next->dts * left > pkt->dts * right || // FIXME this can overflow
1346 (next->dts * left == pkt->dts * right && sc->order < sc2->order);
1349 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1354 AVStream *st = s->streams[pkt->stream_index];
1355 AudioInterleaveContext *aic = st->priv_data;
1356 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1357 av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
1359 // rewrite pts and dts to be decoded time line position
1360 pkt->pts = pkt->dts = aic->dts;
1361 aic->dts += pkt->duration;
1362 ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
1367 for (i = 0; i < s->nb_streams; i++) {
1368 AVStream *st = s->streams[i];
1369 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1371 while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1372 ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1376 return mxf_interleave_get_packet(s, out, pkt, flush);
1379 AVOutputFormat mxf_muxer = {
1381 NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1386 CODEC_ID_MPEG2VIDEO,