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
37 #include "libavutil/fifo.h"
40 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
41 static const int PAL_samples_per_frame[] = { 1920, 0 };
43 #define MXF_INDEX_CLUSTER_SIZE 4096
47 unsigned fifo_size; ///< current fifo size allocated
48 uint64_t dts; ///< current dts
49 int sample_size; ///< size of one sample all channels included
50 const int *samples_per_frame; ///< must be 0 terminated
51 const int *samples; ///< current samples per frame, pointer to samples_per_frame
52 AVRational time_base; ///< time base of output audio packets
53 } AudioInterleaveContext;
63 unsigned slice_offset[17]; // one video, 16 audio
67 AudioInterleaveContext aic;
68 UID track_essence_element_key;
69 int index; ///< index in mxf_essence_container_uls table
72 int order; ///< interleaving order if dts are equal
73 int interlaced; ///< wether picture is interlaced
74 int temporal_reordering;
82 } MXFContainerEssenceEntry;
87 } mxf_essence_mappings[] = {
88 { CODEC_ID_MPEG2VIDEO, 0 },
89 { CODEC_ID_PCM_S24LE, 1 },
90 { CODEC_ID_PCM_S16LE, 1 },
94 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
95 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
96 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
98 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
99 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
100 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
101 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
102 mxf_write_mpegvideo_desc },
103 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
104 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
105 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
106 mxf_write_aes3_desc },
107 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
108 { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
109 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
110 mxf_write_wav_desc },
111 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
112 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
113 { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
117 typedef struct MXFContext {
118 int64_t footer_partition_offset;
119 int essence_container_count;
120 uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
121 AVRational time_base;
123 MXFIndexEntry *index_entries;
124 unsigned edit_units_count;
125 int edit_unit_start; ///< index of the stream starting edit unit
128 static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
129 static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
132 * complete key for operation pattern, partitions, and primer pack
134 static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
135 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
136 static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
137 static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
138 static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
139 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
140 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
143 * partial key for header metadata
145 static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
146 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
149 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
151 static const MXFLocalTagPair mxf_local_tag_batch[] = {
153 { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
154 { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
155 { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
156 { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
157 { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
158 { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
159 { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
160 { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
162 { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
163 { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
164 { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
165 { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
166 { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
167 { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
169 { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
170 { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
171 // Essence Container Data
172 { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
173 { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
175 { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
176 { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
177 { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
178 { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
179 { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
181 { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
182 { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
183 { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
184 { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
185 { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
187 { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
188 { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
189 { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
191 { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
192 { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
193 { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
195 { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
196 { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
197 { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
198 { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
199 // Generic Picture Essence Descriptor
200 { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
201 { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
202 { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
203 { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
204 { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
205 { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
206 { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
207 { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
208 // Generic Sound Essence Descriptor
209 { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
210 { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
211 { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
212 { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
213 { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
214 // Index Table Segment
215 { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
216 { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
217 { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
218 { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
219 { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
220 { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
221 { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
222 { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
223 // MPEG video Descriptor
224 { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
225 // Wave Audio Essence Descriptor
226 { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
227 { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
230 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
232 put_buffer(pb, uuid_base, 12);
237 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
239 put_buffer(pb, umid_base, 16);
240 mxf_write_uuid(pb, type, value);
243 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
245 put_be32(pb, ref_count);
249 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
251 // Determine the best BER size
259 size = (av_log2(len) >> 3) + 1;
262 put_byte(pb, 0x80 + size);
265 put_byte(pb, len >> 8 * size & 0xff);
271 * Get essence container ul index
273 static int mxf_get_essence_container_ul_index(enum CodecID id)
276 for (i = 0; mxf_essence_mappings[i].id; i++)
277 if (mxf_essence_mappings[i].id == id)
278 return mxf_essence_mappings[i].index;
282 static void mxf_write_primer_pack(AVFormatContext *s)
284 ByteIOContext *pb = s->pb;
285 int local_tag_number, i = 0;
287 local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
289 put_buffer(pb, primer_pack_key, 16);
290 klv_encode_ber_length(pb, local_tag_number * 18 + 8);
292 put_be32(pb, local_tag_number); // local_tag num
293 put_be32(pb, 18); // item size, always 18 according to the specs
295 for (i = 0; i < local_tag_number; i++) {
296 put_be16(pb, mxf_local_tag_batch[i].local_tag);
297 put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
301 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
307 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
309 put_buffer(pb, header_metadata_key, 13);
313 static void mxf_free(AVFormatContext *s)
317 for (i = 0; i < s->nb_streams; i++) {
318 AVStream *st = s->streams[i];
319 av_freep(&st->priv_data);
323 static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
325 const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
326 while (uls->type != CODEC_TYPE_DATA) {
327 if (type == uls->type)
334 static void mxf_write_essence_container_refs(AVFormatContext *s)
336 MXFContext *c = s->priv_data;
337 ByteIOContext *pb = s->pb;
340 mxf_write_refs_count(pb, c->essence_container_count);
341 av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
342 for (i = 0; i < c->essence_container_count; i++) {
343 put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
344 PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
348 static void mxf_write_preface(AVFormatContext *s)
350 MXFContext *mxf = s->priv_data;
351 ByteIOContext *pb = s->pb;
353 mxf_write_metadata_key(pb, 0x012f00);
354 PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
355 klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
357 // write preface set uid
358 mxf_write_local_tag(pb, 16, 0x3C0A);
359 mxf_write_uuid(pb, Preface, 0);
360 PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
362 // write creation date
363 mxf_write_local_tag(pb, 8, 0x3B02);
364 put_be64(pb, s->timestamp);
367 mxf_write_local_tag(pb, 2, 0x3B05);
370 // write identification_refs
371 mxf_write_local_tag(pb, 16 + 8, 0x3B06);
372 mxf_write_refs_count(pb, 1);
373 mxf_write_uuid(pb, Identification, 0);
375 // write content_storage_refs
376 mxf_write_local_tag(pb, 16, 0x3B03);
377 mxf_write_uuid(pb, ContentStorage, 0);
379 mxf_write_local_tag(pb, 16, 0x3B09);
380 put_buffer(pb, op1a_ul, 16);
382 // write essence_container_refs
383 mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
384 mxf_write_essence_container_refs(s);
386 // write dm_scheme_refs
387 mxf_write_local_tag(pb, 8, 0x3B0B);
392 * Write a local tag containing an ascii string as utf-16
394 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
396 int i, size = strlen(value);
397 mxf_write_local_tag(pb, size*2, tag);
398 for (i = 0; i < size; i++)
399 put_be16(pb, value[i]);
402 static void mxf_write_identification(AVFormatContext *s)
404 ByteIOContext *pb = s->pb;
405 const char *company = "FFmpeg";
406 const char *product = "OP1a Muxer";
410 mxf_write_metadata_key(pb, 0x013000);
411 PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
413 version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
414 "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
415 length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
416 klv_encode_ber_length(pb, length);
419 mxf_write_local_tag(pb, 16, 0x3C0A);
420 mxf_write_uuid(pb, Identification, 0);
421 PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
423 // write generation uid
424 mxf_write_local_tag(pb, 16, 0x3C09);
425 mxf_write_uuid(pb, Identification, 1);
427 mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
428 mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
429 mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
432 mxf_write_local_tag(pb, 16, 0x3C05);
433 mxf_write_uuid(pb, Identification, 2);
435 // write modified date
436 mxf_write_local_tag(pb, 8, 0x3C06);
440 static void mxf_write_content_storage(AVFormatContext *s)
442 ByteIOContext *pb = s->pb;
444 mxf_write_metadata_key(pb, 0x011800);
445 PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
446 klv_encode_ber_length(pb, 92);
449 mxf_write_local_tag(pb, 16, 0x3C0A);
450 mxf_write_uuid(pb, ContentStorage, 0);
451 PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
453 // write package reference
454 mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
455 mxf_write_refs_count(pb, 2);
456 mxf_write_uuid(pb, MaterialPackage, 0);
457 mxf_write_uuid(pb, SourcePackage, 0);
459 // write essence container data
460 mxf_write_local_tag(pb, 8 + 16, 0x1902);
461 mxf_write_refs_count(pb, 1);
462 mxf_write_uuid(pb, EssenceContainerData, 0);
465 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
467 MXFContext *mxf = s->priv_data;
468 ByteIOContext *pb = s->pb;
469 MXFStreamContext *sc = st->priv_data;
471 mxf_write_metadata_key(pb, 0x013b00);
472 PRINT_KEY(s, "track key", pb->buf_ptr - 16);
473 klv_encode_ber_length(pb, 80);
476 mxf_write_local_tag(pb, 16, 0x3C0A);
477 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
478 PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
481 mxf_write_local_tag(pb, 4, 0x4801);
482 put_be32(pb, st->index);
484 // write track number
485 mxf_write_local_tag(pb, 4, 0x4804);
486 if (type == MaterialPackage)
487 put_be32(pb, 0); // track number of material package is 0
489 put_buffer(pb, sc->track_essence_element_key + 12, 4);
491 mxf_write_local_tag(pb, 8, 0x4B01);
492 put_be32(pb, mxf->time_base.den);
493 put_be32(pb, mxf->time_base.num);
496 mxf_write_local_tag(pb, 8, 0x4B02);
499 // write sequence refs
500 mxf_write_local_tag(pb, 16, 0x4803);
501 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
504 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
506 const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
507 MXFStreamContext *sc = st->priv_data;
509 // find data define uls
510 mxf_write_local_tag(pb, 16, 0x0201);
511 put_buffer(pb, data_def_ul->uid, 16);
514 mxf_write_local_tag(pb, 8, 0x0202);
515 put_be64(pb, sc->duration);
518 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
520 ByteIOContext *pb = s->pb;
522 mxf_write_metadata_key(pb, 0x010f00);
523 PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
524 klv_encode_ber_length(pb, 80);
526 mxf_write_local_tag(pb, 16, 0x3C0A);
527 mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
529 PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
530 mxf_write_common_fields(pb, st);
532 // write structural component
533 mxf_write_local_tag(pb, 16 + 8, 0x1001);
534 mxf_write_refs_count(pb, 1);
535 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
538 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
540 ByteIOContext *pb = s->pb;
543 mxf_write_metadata_key(pb, 0x011100);
544 PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
545 klv_encode_ber_length(pb, 108);
548 mxf_write_local_tag(pb, 16, 0x3C0A);
549 mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
551 PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
552 mxf_write_common_fields(pb, st);
554 // write start_position
555 mxf_write_local_tag(pb, 8, 0x1201);
558 // write source package uid, end of the reference
559 mxf_write_local_tag(pb, 32, 0x1101);
560 if (type == SourcePackage) {
561 for (i = 0; i < 4; i++)
564 mxf_write_umid(pb, SourcePackage, 0);
566 // write source track id
567 mxf_write_local_tag(pb, 4, 0x1102);
568 if (type == SourcePackage)
571 put_be32(pb, st->index);
574 static void mxf_write_multi_descriptor(AVFormatContext *s)
576 MXFContext *mxf = s->priv_data;
577 ByteIOContext *pb = s->pb;
580 mxf_write_metadata_key(pb, 0x014400);
581 PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
582 klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
584 mxf_write_local_tag(pb, 16, 0x3C0A);
585 mxf_write_uuid(pb, MultipleDescriptor, 0);
586 PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
589 mxf_write_local_tag(pb, 8, 0x3001);
590 put_be32(pb, mxf->time_base.den);
591 put_be32(pb, mxf->time_base.num);
593 // write essence container ul
594 mxf_write_local_tag(pb, 16, 0x3004);
595 put_buffer(pb, multiple_desc_ul, 16);
597 // write sub descriptor refs
598 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
599 mxf_write_refs_count(pb, s->nb_streams);
600 for (i = 0; i < s->nb_streams; i++)
601 mxf_write_uuid(pb, SubDescriptor, i);
604 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
606 MXFContext *mxf = s->priv_data;
607 MXFStreamContext *sc = st->priv_data;
608 ByteIOContext *pb = s->pb;
610 put_buffer(pb, key, 16);
611 klv_encode_ber_length(pb, size);
613 mxf_write_local_tag(pb, 16, 0x3C0A);
614 mxf_write_uuid(pb, SubDescriptor, st->index);
616 mxf_write_local_tag(pb, 4, 0x3006);
617 put_be32(pb, st->index);
619 mxf_write_local_tag(pb, 8, 0x3001);
620 put_be32(pb, mxf->time_base.den);
621 put_be32(pb, mxf->time_base.num);
623 mxf_write_local_tag(pb, 16, 0x3004);
624 put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
627 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
628 static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
629 static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
631 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
633 MXFStreamContext *sc = st->priv_data;
634 ByteIOContext *pb = s->pb;
635 int stored_height = (st->codec->height+15)/16*16;
639 mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
641 mxf_write_local_tag(pb, 4, 0x3203);
642 put_be32(pb, st->codec->width);
644 mxf_write_local_tag(pb, 4, 0x3202);
645 put_be32(pb, stored_height>>sc->interlaced);
647 mxf_write_local_tag(pb, 4, 0x3209);
648 put_be32(pb, st->codec->width);
650 mxf_write_local_tag(pb, 4, 0x3208);
651 put_be32(pb, st->codec->height>>sc->interlaced);
654 mxf_write_local_tag(pb, 4, 0x8000);
655 put_be32(pb, st->codec->bit_rate);
658 mxf_write_local_tag(pb, 1, 0x320C);
659 put_byte(pb, sc->interlaced);
662 switch (st->codec->height) {
663 case 576: f1 = 23; f2 = 336; break;
664 case 608: f1 = 7; f2 = 320; break;
665 case 480: f1 = 20; f2 = 283; break;
666 case 512: f1 = 7; f2 = 270; break;
667 case 720: f1 = 26; f2 = 0; break; // progressive
668 case 1080: f1 = 21; f2 = 584; break;
669 default: f1 = 0; f2 = 0; break;
672 if (!sc->interlaced) {
677 mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
678 put_be32(pb, sc->interlaced ? 2 : 1);
684 av_reduce(&dar.num, &dar.den,
685 st->codec->width*st->codec->sample_aspect_ratio.num,
686 st->codec->height*st->codec->sample_aspect_ratio.den,
689 mxf_write_local_tag(pb, 8, 0x320E);
690 put_be32(pb, dar.num);
691 put_be32(pb, dar.den);
693 mxf_write_local_tag(pb, 16, 0x3201);
694 put_buffer(pb, *sc->codec_ul, 16);
697 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
699 ByteIOContext *pb = s->pb;
701 mxf_write_generic_desc(s, st, key, size);
704 mxf_write_local_tag(pb, 1, 0x3D02);
707 // write audio sampling rate
708 mxf_write_local_tag(pb, 8, 0x3D03);
709 put_be32(pb, st->codec->sample_rate);
712 mxf_write_local_tag(pb, 4, 0x3D07);
713 put_be32(pb, st->codec->channels);
715 mxf_write_local_tag(pb, 4, 0x3D01);
716 put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
719 static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
721 ByteIOContext *pb = s->pb;
723 mxf_write_generic_sound_desc(s, st, key, size);
725 mxf_write_local_tag(pb, 2, 0x3D0A);
726 put_be16(pb, st->codec->block_align);
729 mxf_write_local_tag(pb, 4, 0x3D09);
730 put_be32(pb, st->codec->block_align*st->codec->sample_rate);
733 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
735 mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
738 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
740 mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
743 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
745 ByteIOContext *pb = s->pb;
748 if (type == MaterialPackage) {
749 mxf_write_metadata_key(pb, 0x013600);
750 PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
751 klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
753 mxf_write_metadata_key(pb, 0x013700);
754 PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
755 klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
759 mxf_write_local_tag(pb, 16, 0x3C0A);
760 mxf_write_uuid(pb, type, 0);
761 av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
762 PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
764 // write package umid
765 mxf_write_local_tag(pb, 32, 0x4401);
766 mxf_write_umid(pb, type, 0);
767 PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
770 mxf_write_local_tag(pb, 8, 0x4405);
773 // write modified date
774 mxf_write_local_tag(pb, 8, 0x4404);
778 mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
779 mxf_write_refs_count(pb, s->nb_streams);
780 for (i = 0; i < s->nb_streams; i++)
781 mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
783 // write multiple descriptor reference
784 if (type == SourcePackage) {
785 mxf_write_local_tag(pb, 16, 0x4701);
786 if (s->nb_streams > 1) {
787 mxf_write_uuid(pb, MultipleDescriptor, 0);
788 mxf_write_multi_descriptor(s);
790 mxf_write_uuid(pb, SubDescriptor, 0);
793 for (i = 0; i < s->nb_streams; i++) {
794 AVStream *st = s->streams[i];
795 mxf_write_track(s, st, type);
796 mxf_write_sequence(s, st, type);
797 mxf_write_structural_component(s, st, type);
799 if (type == SourcePackage) {
800 MXFStreamContext *sc = st->priv_data;
801 mxf_essence_container_uls[sc->index].write_desc(s, st);
806 static int mxf_write_essence_container_data(AVFormatContext *s)
808 ByteIOContext *pb = s->pb;
810 mxf_write_metadata_key(pb, 0x012300);
811 klv_encode_ber_length(pb, 72);
813 mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
814 mxf_write_uuid(pb, EssenceContainerData, 0);
816 mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
817 mxf_write_umid(pb, SourcePackage, 0);
819 mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
822 mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
828 static int mxf_write_header_metadata_sets(AVFormatContext *s)
830 mxf_write_preface(s);
831 mxf_write_identification(s);
832 mxf_write_content_storage(s);
833 mxf_write_package(s, MaterialPackage);
834 mxf_write_package(s, SourcePackage);
835 mxf_write_essence_container_data(s);
839 static int mxf_write_index_table_segment(AVFormatContext *s)
841 MXFContext *mxf = s->priv_data;
842 ByteIOContext *pb = s->pb;
844 int temporal_reordering = 0;
845 int last_key_index = 0, key_index = 0;
847 av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
849 put_buffer(pb, index_table_segment_key, 16);
850 ret = klv_encode_ber_length(pb, 109 + s->nb_streams*6 +
851 mxf->edit_units_count*(11+(s->nb_streams-1)*4));
854 mxf_write_local_tag(pb, 16, 0x3C0A);
855 mxf_write_uuid(pb, IndexTableSegment, 0);
858 mxf_write_local_tag(pb, 8, 0x3F0B);
859 put_be32(pb, mxf->time_base.num);
860 put_be32(pb, mxf->time_base.den);
862 // index start position
863 mxf_write_local_tag(pb, 8, 0x3F0C);
867 mxf_write_local_tag(pb, 8, 0x3F0D);
868 put_be64(pb, mxf->edit_units_count);
870 // edit unit byte count
871 mxf_write_local_tag(pb, 4, 0x3F05);
875 mxf_write_local_tag(pb, 4, 0x3F06);
879 mxf_write_local_tag(pb, 4, 0x3F07);
883 mxf_write_local_tag(pb, 1, 0x3F08);
884 put_byte(pb, s->nb_streams-1);
887 mxf_write_local_tag(pb, 8 + s->nb_streams*6, 0x3F09);
888 put_be32(pb, s->nb_streams); // num of entries
889 put_be32(pb, 6); // size of one entry
890 for (i = 0; i < s->nb_streams; i++) {
891 AVStream *st = s->streams[i];
892 MXFStreamContext *sc = st->priv_data;
893 put_byte(pb, sc->temporal_reordering);
894 if (sc->temporal_reordering)
895 temporal_reordering = 1;
897 put_be32(pb, 0); // element delta
900 mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
901 put_be32(pb, mxf->edit_units_count); // num of entries
902 put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
903 for (i = 0; i < mxf->edit_units_count; i++) {
904 if (temporal_reordering) {
905 int temporal_offset = 0;
906 for (j = i+1; j < mxf->edit_units_count; j++) {
908 if (mxf->index_entries[j].flags & 0x10) { // backward prediction
909 // next is not b, so is reordered
910 if (!(mxf->index_entries[i+1].flags & 0x10)) {
911 if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
914 temporal_offset = -temporal_offset;
919 put_byte(pb, temporal_offset);
922 if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
923 last_key_index = key_index;
926 if (mxf->index_entries[i].flags & 0x10 && // backward prediction
927 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
928 put_byte(pb, last_key_index - i);
930 put_byte(pb, key_index - i); // key frame offset
931 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
932 last_key_index = key_index;
934 put_byte(pb, mxf->index_entries[i].flags);
936 put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
937 for (k = 0; k < s->nb_streams; k++) {
938 if (mxf->index_entries[i].slice_offset[k])
939 put_be32(pb, mxf->index_entries[i].slice_offset[k]);
946 static void mxf_write_partition(AVFormatContext *s, int bodysid,
947 int indexsid, unsigned index_byte_count,
948 const uint8_t *key, int write_metadata)
950 MXFContext *mxf = s->priv_data;
951 ByteIOContext *pb = s->pb;
952 int64_t header_byte_count_offset;
955 put_buffer(pb, key, 16);
957 klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
959 // write partition value
960 put_be16(pb, 1); // majorVersion
961 put_be16(pb, 2); // minorVersion
962 put_be32(pb, 1); // kagSize
964 put_be64(pb, url_ftell(pb) - 25); // thisPartition
965 put_be64(pb, 0); // previousPartition
967 put_be64(pb, mxf->footer_partition_offset); // footerPartition
970 header_byte_count_offset = url_ftell(pb);
971 put_be64(pb, 0); // headerByteCount, update later
974 put_be64(pb, index_byte_count); // indexByteCount
975 put_be32(pb, indexsid); // indexSID
976 put_be64(pb, 0); // bodyOffset
978 put_be32(pb, bodysid); // bodySID
979 put_buffer(pb, op1a_ul, 16); // operational pattern
982 mxf_write_essence_container_refs(s);
984 if (write_metadata) {
985 // mark the start of the headermetadata and calculate metadata size
986 int64_t pos, start = url_ftell(s->pb);
987 mxf_write_primer_pack(s);
988 mxf_write_header_metadata_sets(s);
989 pos = url_ftell(s->pb);
990 // update header_byte_count
991 url_fseek(pb, header_byte_count_offset, SEEK_SET);
992 put_be64(pb, pos - start);
993 url_fseek(pb, pos, SEEK_SET);
996 put_flush_packet(pb);
999 static const UID mxf_mpeg2_codec_uls[] = {
1000 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1001 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1002 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1003 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1004 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1005 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1006 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1007 { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1010 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1012 if (avctx->profile == 4) { // Main
1013 if (avctx->level == 8) // Main
1014 return avctx->gop_size ?
1015 &mxf_mpeg2_codec_uls[1] :
1016 &mxf_mpeg2_codec_uls[0];
1017 else if (avctx->level == 4) // High
1018 return avctx->gop_size ?
1019 &mxf_mpeg2_codec_uls[5] :
1020 &mxf_mpeg2_codec_uls[4];
1021 } else if (avctx->profile == 0) { // 422
1022 if (avctx->level == 5) // Main
1023 return avctx->gop_size ?
1024 &mxf_mpeg2_codec_uls[3] :
1025 &mxf_mpeg2_codec_uls[2];
1026 else if (avctx->level == 2) // High
1027 return avctx->gop_size ?
1028 &mxf_mpeg2_codec_uls[7] :
1029 &mxf_mpeg2_codec_uls[6];
1034 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1036 MXFContext *mxf = s->priv_data;
1037 MXFStreamContext *sc = st->priv_data;
1041 mxf->index_entries[mxf->edit_units_count].flags = 0;
1043 for(i = 0; i < pkt->size - 4; i++) {
1044 c = (c<<8) + pkt->data[i];
1046 if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1047 st->codec->profile = pkt->data[i+1] & 0x07;
1048 st->codec->level = pkt->data[i+2] >> 4;
1049 } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1050 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1053 } else if (c == 0x1b8) { // gop
1054 if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1055 mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1056 } else if (c == 0x1b3) { // seq
1057 mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1058 } else if (c == 0x100) { // pic
1059 int pict_type = (pkt->data[i+2]>>3) & 0x07;
1060 if (pict_type == 2) { // P frame
1061 mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1062 st->codec->gop_size = 1;
1063 } else if (pict_type == 3) { // B frame
1064 mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1065 sc->temporal_reordering = -1;
1066 } else if (!pict_type) {
1067 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1072 sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1073 return !!sc->codec_ul;
1076 static int ff_audio_interleave_init(AVFormatContext *s,
1077 const int *samples_per_frame,
1078 AVRational time_base)
1082 if (!samples_per_frame)
1085 for (i = 0; i < s->nb_streams; i++) {
1086 AVStream *st = s->streams[i];
1087 AudioInterleaveContext *aic = st->priv_data;
1089 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1090 aic->sample_size = (st->codec->channels *
1091 av_get_bits_per_sample(st->codec->codec_id)) / 8;
1092 if (!aic->sample_size) {
1093 av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
1096 aic->samples_per_frame = samples_per_frame;
1097 aic->samples = aic->samples_per_frame;
1098 aic->time_base = time_base;
1100 av_fifo_init(&aic->fifo, 100 * *aic->samples);
1107 static void ff_audio_interleave_close(AVFormatContext *s)
1110 for (i = 0; i < s->nb_streams; i++) {
1111 AVStream *st = s->streams[i];
1112 AudioInterleaveContext *aic = st->priv_data;
1114 if (st->codec->codec_type == CODEC_TYPE_AUDIO)
1115 av_fifo_free(&aic->fifo);
1119 static int mxf_write_header(AVFormatContext *s)
1121 MXFContext *mxf = s->priv_data;
1123 uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1124 const int *samples_per_frame = NULL;
1126 if (s->nb_streams > 17) {
1127 av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1131 for (i = 0; i < s->nb_streams; i++) {
1132 AVStream *st = s->streams[i];
1133 MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1135 return AVERROR(ENOMEM);
1138 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1139 if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1140 samples_per_frame = PAL_samples_per_frame;
1141 mxf->time_base = (AVRational){ 1, 25 };
1142 } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1143 samples_per_frame = NTSC_samples_per_frame;
1144 mxf->time_base = (AVRational){ 1001, 30000 };
1146 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1149 mxf->edit_unit_start = st->index;
1150 av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1151 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1152 if (st->codec->sample_rate != 48000) {
1153 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1156 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1160 sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1161 if (sc->index == -1) {
1162 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1163 "codec not currently supported in container\n", i);
1167 sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1169 if (!present[sc->index]) {
1170 mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1171 present[sc->index] = 1;
1173 present[sc->index]++;
1174 memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1175 sc->track_essence_element_key[15] = present[sc->index];
1176 PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1179 for (i = 0; i < s->nb_streams; i++) {
1180 MXFStreamContext *sc = s->streams[i]->priv_data;
1181 // update element count
1182 sc->track_essence_element_key[13] = present[sc->index];
1183 sc->order = AV_RB32(sc->track_essence_element_key+12);
1186 if (!samples_per_frame)
1187 samples_per_frame = PAL_samples_per_frame;
1189 if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1195 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1197 MXFContext *mxf = s->priv_data;
1198 ByteIOContext *pb = s->pb;
1199 AVStream *st = s->streams[pkt->stream_index];
1200 MXFStreamContext *sc = st->priv_data;
1202 if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1203 mxf->index_entries = av_realloc(mxf->index_entries,
1204 (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1205 sizeof(*mxf->index_entries));
1206 if (!mxf->index_entries) {
1207 av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1212 if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1213 if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1214 av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1219 if (!mxf->header_written) {
1220 mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
1221 mxf->header_written = 1;
1224 if (st->index == mxf->edit_unit_start) {
1225 mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1226 mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
1227 mxf->edit_units_count++;
1229 mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
1230 url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1233 put_buffer(pb, sc->track_essence_element_key, 16); // write key
1234 klv_encode_ber_length(pb, pkt->size); // write length
1235 put_buffer(pb, pkt->data, pkt->size); // write value
1237 sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1239 put_flush_packet(pb);
1243 static void mxf_write_random_index_pack(AVFormatContext *s)
1245 MXFContext *mxf = s->priv_data;
1246 ByteIOContext *pb = s->pb;
1247 uint64_t pos = url_ftell(pb);
1249 put_buffer(pb, random_index_pack_key, 16);
1250 klv_encode_ber_length(pb, 28);
1252 put_be32(pb, 1); // BodySID of header partition
1253 put_be64(pb, 0); // offset of header partition
1255 put_be32(pb, 0); // BodySID of footer partition
1256 put_be64(pb, mxf->footer_partition_offset);
1258 put_be32(pb, url_ftell(pb) - pos + 4);
1261 static int mxf_write_footer(AVFormatContext *s)
1263 MXFContext *mxf = s->priv_data;
1264 ByteIOContext *pb = s->pb;
1265 unsigned index_byte_count =
1266 109 + s->nb_streams*6 +
1267 mxf->edit_units_count*(11+(s->nb_streams-1)*4);
1269 // add encoded ber length
1270 index_byte_count += 16 +
1271 (index_byte_count < 128 ? 1 : (av_log2(index_byte_count) >> 3) + 2);
1273 mxf->footer_partition_offset = url_ftell(pb);
1274 mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
1276 mxf_write_index_table_segment(s);
1278 mxf_write_random_index_pack(s);
1280 if (!url_is_streamed(s->pb)) {
1281 url_fseek(pb, 0, SEEK_SET);
1282 mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
1285 ff_audio_interleave_close(s);
1291 static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1292 int stream_index, int flush)
1294 AVStream *st = s->streams[stream_index];
1295 AudioInterleaveContext *aic = st->priv_data;
1297 int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1298 if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1301 av_new_packet(pkt, size);
1302 av_fifo_read(&aic->fifo, pkt->data, size);
1304 pkt->dts = pkt->pts = aic->dts;
1305 pkt->duration = av_rescale_q(*aic->samples, st->time_base, aic->time_base);
1306 pkt->stream_index = stream_index;
1307 aic->dts += pkt->duration;
1311 aic->samples = aic->samples_per_frame;
1316 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1319 int stream_count = 0;
1320 int streams[MAX_STREAMS];
1322 memset(streams, 0, sizeof(streams));
1323 pktl = s->packet_buffer;
1325 //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1326 if (!streams[pktl->pkt.stream_index])
1328 streams[pktl->pkt.stream_index]++;
1332 if (stream_count && (s->nb_streams == stream_count || flush)) {
1333 pktl = s->packet_buffer;
1334 if (s->nb_streams != stream_count) {
1335 MXFContext *mxf = s->priv_data;
1336 AVPacketList *first = NULL;
1337 // find first packet in edit unit
1339 AVStream *st = s->streams[pktl->pkt.stream_index];
1340 if (st->index == mxf->edit_unit_start)
1346 // purge packet queue
1348 AVPacketList *next = pktl->next;
1349 av_free_packet(&pktl->pkt);
1359 //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1360 s->packet_buffer = pktl->next;
1365 av_init_packet(out);
1370 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1372 MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
1373 MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1375 return next->dts > pkt->dts ||
1376 (next->dts == pkt->dts && sc->order < sc2->order);
1379 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1384 AVStream *st = s->streams[pkt->stream_index];
1385 AudioInterleaveContext *aic = st->priv_data;
1386 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1387 av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
1389 // rewrite pts and dts to be decoded time line position
1390 pkt->pts = pkt->dts = aic->dts;
1391 aic->dts += pkt->duration;
1392 ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
1397 for (i = 0; i < s->nb_streams; i++) {
1398 AVStream *st = s->streams[i];
1399 if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1401 while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1402 ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1406 return mxf_interleave_get_packet(s, out, pkt, flush);
1409 AVOutputFormat mxf_muxer = {
1411 NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1416 CODEC_ID_MPEG2VIDEO,