use timestamp as modification date
[ffmpeg.git] / libavformat / mxfenc.c
1 /*
2  * MXF muxer
3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 /*
24  * References
25  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
26  * SMPTE 377M MXF File Format Specifications
27  * SMPTE 379M MXF Generic Container
28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29  * SMPTE RP210: SMPTE Metadata Dictionary
30  * SMPTE RP224: Registry of SMPTE Universal Labels
31  */
32
33 //#define DEBUG
34
35 #include <math.h>
36
37 #include "libavutil/fifo.h"
38 #include "mxf.h"
39
40 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
41 static const int PAL_samples_per_frame[]  = { 1920, 0 };
42
43 #define MXF_INDEX_CLUSTER_SIZE 4096
44
45 typedef struct {
46     AVFifoBuffer fifo;
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;
54
55 typedef struct {
56     int local_tag;
57     UID uid;
58 } MXFLocalTagPair;
59
60 typedef struct {
61     uint8_t flags;
62     uint64_t offset;
63     unsigned slice_offset[17]; // one video, 16 audio
64 } MXFIndexEntry;
65
66 typedef struct {
67     AudioInterleaveContext aic;
68     UID track_essence_element_key;
69     int index;            ///< index in mxf_essence_container_uls table
70     const UID *codec_ul;
71     int64_t duration;
72     int order;            ///< interleaving order if dts are equal
73     int interlaced;       ///< wether picture is interlaced
74     int temporal_reordering;
75 } MXFStreamContext;
76
77 typedef struct {
78     UID container_ul;
79     UID element_ul;
80     UID codec_ul;
81     void (*write_desc)();
82 } MXFContainerEssenceEntry;
83
84 static const struct {
85     enum CodecID id;
86     int index;
87 } mxf_essence_mappings[] = {
88     { CODEC_ID_MPEG2VIDEO, 0 },
89     { CODEC_ID_PCM_S24LE,  1 },
90     { CODEC_ID_PCM_S16LE,  1 },
91     { 0 }
92 };
93
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);
97
98 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
99     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
100       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
101       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
102       mxf_write_mpegvideo_desc },
103     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
104       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
105       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
106       mxf_write_aes3_desc },
107     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
108       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
109       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
110       mxf_write_wav_desc },
111     { { 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 },
114       NULL },
115 };
116
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;
122     int header_written;
123     MXFIndexEntry *index_entries;
124     unsigned edit_units_count;
125     int edit_unit_start;  ///< index of the stream starting edit unit
126 } MXFContext;
127
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 };
130
131 /**
132  * complete key for operation pattern, partitions, and primer pack
133  */
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
141
142 /**
143  * partial key for header metadata
144  */
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 };
147
148 /**
149  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
150  */
151 static const MXFLocalTagPair mxf_local_tag_batch[] = {
152     // preface set
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 */
161     // Identification
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 */
168     // Content Storage
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 */
174     // Package
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 */
180     // Track
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 */
186     // Sequence
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 */
190     // Source Clip
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 */
194     // File Descriptor
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 */
228 };
229
230 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
231 {
232     put_buffer(pb, uuid_base, 12);
233     put_be16(pb, type);
234     put_be16(pb, value);
235 }
236
237 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
238 {
239     put_buffer(pb, umid_base, 16);
240     mxf_write_uuid(pb, type, value);
241 }
242
243 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
244 {
245     put_be32(pb, ref_count);
246     put_be32(pb, 16);
247 }
248
249 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
250 {
251     // Determine the best BER size
252     int size;
253     if (len < 128) {
254         //short form
255         put_byte(pb, len);
256         return 1;
257     }
258
259     size = (av_log2(len) >> 3) + 1;
260
261     // long form
262     put_byte(pb, 0x80 + size);
263     while(size) {
264         size--;
265         put_byte(pb, len >> 8 * size & 0xff);
266     }
267     return 0;
268 }
269
270 /*
271  * Get essence container ul index
272  */
273 static int mxf_get_essence_container_ul_index(enum CodecID id)
274 {
275     int i;
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;
279     return -1;
280 }
281
282 static void mxf_write_primer_pack(AVFormatContext *s)
283 {
284     ByteIOContext *pb = s->pb;
285     int local_tag_number, i = 0;
286
287     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
288
289     put_buffer(pb, primer_pack_key, 16);
290     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
291
292     put_be32(pb, local_tag_number); // local_tag num
293     put_be32(pb, 18); // item size, always 18 according to the specs
294
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);
298     }
299 }
300
301 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
302 {
303     put_be16(pb, tag);
304     put_be16(pb, size);
305 }
306
307 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
308 {
309     put_buffer(pb, header_metadata_key, 13);
310     put_be24(pb, value);
311 }
312
313 static void mxf_free(AVFormatContext *s)
314 {
315     int i;
316
317     for (i = 0; i < s->nb_streams; i++) {
318         AVStream *st = s->streams[i];
319         av_freep(&st->priv_data);
320     }
321 }
322
323 static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
324 {
325     const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
326     while (uls->type != CODEC_TYPE_DATA) {
327         if (type == uls->type)
328             break;
329         uls++;
330     }
331     return uls;
332 }
333
334 static void mxf_write_essence_container_refs(AVFormatContext *s)
335 {
336     MXFContext *c = s->priv_data;
337     ByteIOContext *pb = s->pb;
338     int i;
339
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);
345     }
346 }
347
348 static void mxf_write_preface(AVFormatContext *s)
349 {
350     MXFContext *mxf = s->priv_data;
351     ByteIOContext *pb = s->pb;
352
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);
356
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);
361
362     // write creation date
363     mxf_write_local_tag(pb, 8, 0x3B02);
364     put_be64(pb, s->timestamp);
365
366     // write version
367     mxf_write_local_tag(pb, 2, 0x3B05);
368     put_be16(pb, 1);
369
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);
374
375     // write content_storage_refs
376     mxf_write_local_tag(pb, 16, 0x3B03);
377     mxf_write_uuid(pb, ContentStorage, 0);
378
379     mxf_write_local_tag(pb, 16, 0x3B09);
380     put_buffer(pb, op1a_ul, 16);
381
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);
385
386     // write dm_scheme_refs
387     mxf_write_local_tag(pb, 8, 0x3B0B);
388     put_be64(pb, 0);
389 }
390
391 /*
392  * Write a local tag containing an ascii string as utf-16
393  */
394 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
395 {
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]);
400 }
401
402 static void mxf_write_identification(AVFormatContext *s)
403 {
404     ByteIOContext *pb = s->pb;
405     const char *company = "FFmpeg";
406     const char *product = "OP1a Muxer";
407     const char *version;
408     int length;
409
410     mxf_write_metadata_key(pb, 0x013000);
411     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
412
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);
417
418     // write uid
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);
422
423     // write generation uid
424     mxf_write_local_tag(pb, 16, 0x3C09);
425     mxf_write_uuid(pb, Identification, 1);
426
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
430
431     // write product uid
432     mxf_write_local_tag(pb, 16, 0x3C05);
433     mxf_write_uuid(pb, Identification, 2);
434
435     // modification date
436     mxf_write_local_tag(pb, 8, 0x3C06);
437     put_be64(pb, s->timestamp);
438 }
439
440 static void mxf_write_content_storage(AVFormatContext *s)
441 {
442     ByteIOContext *pb = s->pb;
443
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);
447
448     // write uid
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);
452
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);
458
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);
463 }
464
465 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
466 {
467     MXFContext *mxf = s->priv_data;
468     ByteIOContext *pb = s->pb;
469     MXFStreamContext *sc = st->priv_data;
470
471     mxf_write_metadata_key(pb, 0x013b00);
472     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
473     klv_encode_ber_length(pb, 80);
474
475     // write track uid
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);
479
480     // write track id
481     mxf_write_local_tag(pb, 4, 0x4801);
482     put_be32(pb, st->index);
483
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
488     else
489         put_buffer(pb, sc->track_essence_element_key + 12, 4);
490
491     mxf_write_local_tag(pb, 8, 0x4B01);
492     put_be32(pb, mxf->time_base.den);
493     put_be32(pb, mxf->time_base.num);
494
495     // write origin
496     mxf_write_local_tag(pb, 8, 0x4B02);
497     put_be64(pb, 0);
498
499     // write sequence refs
500     mxf_write_local_tag(pb, 16, 0x4803);
501     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
502 }
503
504 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
505 {
506     const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
507     MXFStreamContext *sc = st->priv_data;
508
509     // find data define uls
510     mxf_write_local_tag(pb, 16, 0x0201);
511     put_buffer(pb, data_def_ul->uid, 16);
512
513     // write duration
514     mxf_write_local_tag(pb, 8, 0x0202);
515     put_be64(pb, sc->duration);
516 }
517
518 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
519 {
520     ByteIOContext *pb = s->pb;
521
522     mxf_write_metadata_key(pb, 0x010f00);
523     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
524     klv_encode_ber_length(pb, 80);
525
526     mxf_write_local_tag(pb, 16, 0x3C0A);
527     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
528
529     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
530     mxf_write_common_fields(pb, st);
531
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);
536 }
537
538 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
539 {
540     ByteIOContext *pb = s->pb;
541     int i;
542
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);
546
547     // write uid
548     mxf_write_local_tag(pb, 16, 0x3C0A);
549     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
550
551     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
552     mxf_write_common_fields(pb, st);
553
554     // write start_position
555     mxf_write_local_tag(pb, 8, 0x1201);
556     put_be64(pb, 0);
557
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++)
562             put_be64(pb, 0);
563     } else
564         mxf_write_umid(pb, SourcePackage, 0);
565
566     // write source track id
567     mxf_write_local_tag(pb, 4, 0x1102);
568     if (type == SourcePackage)
569         put_be32(pb, 0);
570     else
571         put_be32(pb, st->index);
572 }
573
574 static void mxf_write_multi_descriptor(AVFormatContext *s)
575 {
576     MXFContext *mxf = s->priv_data;
577     ByteIOContext *pb = s->pb;
578     int i;
579
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);
583
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);
587
588     // write sample rate
589     mxf_write_local_tag(pb, 8, 0x3001);
590     put_be32(pb, mxf->time_base.den);
591     put_be32(pb, mxf->time_base.num);
592
593     // write essence container ul
594     mxf_write_local_tag(pb, 16, 0x3004);
595     put_buffer(pb, multiple_desc_ul, 16);
596
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);
602 }
603
604 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
605 {
606     MXFContext *mxf = s->priv_data;
607     MXFStreamContext *sc = st->priv_data;
608     ByteIOContext *pb = s->pb;
609
610     put_buffer(pb, key, 16);
611     klv_encode_ber_length(pb, size);
612
613     mxf_write_local_tag(pb, 16, 0x3C0A);
614     mxf_write_uuid(pb, SubDescriptor, st->index);
615
616     mxf_write_local_tag(pb, 4, 0x3006);
617     put_be32(pb, st->index);
618
619     mxf_write_local_tag(pb, 8, 0x3001);
620     put_be32(pb, mxf->time_base.den);
621     put_be32(pb, mxf->time_base.num);
622
623     mxf_write_local_tag(pb, 16, 0x3004);
624     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
625 }
626
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 };
630
631 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
632 {
633     MXFStreamContext *sc = st->priv_data;
634     ByteIOContext *pb = s->pb;
635     int stored_height = (st->codec->height+15)/16*16;
636     AVRational dar;
637     int f1, f2;
638
639     mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
640
641     mxf_write_local_tag(pb, 4, 0x3203);
642     put_be32(pb, st->codec->width);
643
644     mxf_write_local_tag(pb, 4, 0x3202);
645     put_be32(pb, stored_height>>sc->interlaced);
646
647     mxf_write_local_tag(pb, 4, 0x3209);
648     put_be32(pb, st->codec->width);
649
650     mxf_write_local_tag(pb, 4, 0x3208);
651     put_be32(pb, st->codec->height>>sc->interlaced);
652
653     // bit rate
654     mxf_write_local_tag(pb, 4, 0x8000);
655     put_be32(pb, st->codec->bit_rate);
656
657     // frame layout
658     mxf_write_local_tag(pb, 1, 0x320C);
659     put_byte(pb, sc->interlaced);
660
661     // video line map
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;
670     }
671
672     if (!sc->interlaced) {
673         f2  = 0;
674         f1 *= 2;
675     }
676
677     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
678     put_be32(pb, sc->interlaced ? 2 : 1);
679     put_be32(pb, 4);
680     put_be32(pb, f1);
681     if (sc->interlaced)
682         put_be32(pb, f2);
683
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,
687               1024*1024);
688
689     mxf_write_local_tag(pb, 8, 0x320E);
690     put_be32(pb, dar.num);
691     put_be32(pb, dar.den);
692
693     mxf_write_local_tag(pb, 16, 0x3201);
694     put_buffer(pb, *sc->codec_ul, 16);
695 }
696
697 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
698 {
699     ByteIOContext *pb = s->pb;
700
701     mxf_write_generic_desc(s, st, key, size);
702
703     // audio locked
704     mxf_write_local_tag(pb, 1, 0x3D02);
705     put_byte(pb, 1);
706
707     // write audio sampling rate
708     mxf_write_local_tag(pb, 8, 0x3D03);
709     put_be32(pb, st->codec->sample_rate);
710     put_be32(pb, 1);
711
712     mxf_write_local_tag(pb, 4, 0x3D07);
713     put_be32(pb, st->codec->channels);
714
715     mxf_write_local_tag(pb, 4, 0x3D01);
716     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
717 }
718
719 static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
720 {
721     ByteIOContext *pb = s->pb;
722
723     mxf_write_generic_sound_desc(s, st, key, size);
724
725     mxf_write_local_tag(pb, 2, 0x3D0A);
726     put_be16(pb, st->codec->block_align);
727
728     // avg bytes per sec
729     mxf_write_local_tag(pb, 4, 0x3D09);
730     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
731 }
732
733 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
734 {
735     mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
736 }
737
738 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
739 {
740     mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
741 }
742
743 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
744 {
745     ByteIOContext *pb = s->pb;
746     int i;
747
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);
752     } else {
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
756     }
757
758     // write uid
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);
763
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);
768
769     // write create date
770     mxf_write_local_tag(pb, 8, 0x4405);
771     put_be64(pb, 0);
772
773     // write modified date
774     mxf_write_local_tag(pb, 8, 0x4404);
775     put_be64(pb, 0);
776
777     // write track refs
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);
782
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);
789         } else
790             mxf_write_uuid(pb, SubDescriptor, 0);
791     }
792
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);
798
799         if (type == SourcePackage) {
800             MXFStreamContext *sc = st->priv_data;
801             mxf_essence_container_uls[sc->index].write_desc(s, st);
802         }
803     }
804 }
805
806 static int mxf_write_essence_container_data(AVFormatContext *s)
807 {
808     ByteIOContext *pb = s->pb;
809
810     mxf_write_metadata_key(pb, 0x012300);
811     klv_encode_ber_length(pb, 72);
812
813     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
814     mxf_write_uuid(pb, EssenceContainerData, 0);
815
816     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
817     mxf_write_umid(pb, SourcePackage, 0);
818
819     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
820     put_be32(pb, 1);
821
822     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
823     put_be32(pb, 2);
824
825     return 0;
826 }
827
828 static int mxf_write_header_metadata_sets(AVFormatContext *s)
829 {
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);
836     return 0;
837 }
838
839 static int mxf_write_index_table_segment(AVFormatContext *s)
840 {
841     MXFContext *mxf = s->priv_data;
842     ByteIOContext *pb = s->pb;
843     int i, j, k, ret;
844     int temporal_reordering = 0;
845     int last_key_index = 0, key_index = 0;
846
847     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
848
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));
852
853     // instance id
854     mxf_write_local_tag(pb, 16, 0x3C0A);
855     mxf_write_uuid(pb, IndexTableSegment, 0);
856
857     // index edit rate
858     mxf_write_local_tag(pb, 8, 0x3F0B);
859     put_be32(pb, mxf->time_base.num);
860     put_be32(pb, mxf->time_base.den);
861
862     // index start position
863     mxf_write_local_tag(pb, 8, 0x3F0C);
864     put_be64(pb, 0);
865
866     // index duration
867     mxf_write_local_tag(pb, 8, 0x3F0D);
868     put_be64(pb, mxf->edit_units_count);
869
870     // edit unit byte count
871     mxf_write_local_tag(pb, 4, 0x3F05);
872     put_be32(pb, 0);
873
874     // index sid
875     mxf_write_local_tag(pb, 4, 0x3F06);
876     put_be32(pb, 2);
877
878     // body sid
879     mxf_write_local_tag(pb, 4, 0x3F07);
880     put_be32(pb, 1);
881
882     // slice count - 1
883     mxf_write_local_tag(pb, 1, 0x3F08);
884     put_byte(pb, s->nb_streams-1);
885
886     // delta entry array
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;
896         put_byte(pb, i);
897         put_be32(pb, 0); // element delta
898     }
899
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++) {
907                 temporal_offset++;
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
912                             temporal_offset = 0;
913                         else
914                             temporal_offset = -temporal_offset;
915                     }
916                     break;
917                 }
918             }
919             put_byte(pb, temporal_offset);
920         } else
921             put_byte(pb, 0);
922         if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
923             last_key_index = key_index;
924             key_index = i;
925         }
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);
929         } else {
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;
933         }
934         put_byte(pb, mxf->index_entries[i].flags);
935         // stream offset
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]);
940         }
941     }
942
943     return ret;
944 }
945
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)
949 {
950     MXFContext *mxf = s->priv_data;
951     ByteIOContext *pb = s->pb;
952     int64_t header_byte_count_offset;
953
954     // write klv
955     put_buffer(pb, key, 16);
956
957     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
958
959     // write partition value
960     put_be16(pb, 1); // majorVersion
961     put_be16(pb, 2); // minorVersion
962     put_be32(pb, 1); // kagSize
963
964     put_be64(pb, url_ftell(pb) - 25); // thisPartition
965     put_be64(pb, 0); // previousPartition
966
967     put_be64(pb, mxf->footer_partition_offset); // footerPartition
968
969     // set offset
970     header_byte_count_offset = url_ftell(pb);
971     put_be64(pb, 0); // headerByteCount, update later
972
973     // indexTable
974     put_be64(pb, index_byte_count); // indexByteCount
975     put_be32(pb, indexsid); // indexSID
976     put_be64(pb, 0); // bodyOffset
977
978     put_be32(pb, bodysid); // bodySID
979     put_buffer(pb, op1a_ul, 16); // operational pattern
980
981     // essence container
982     mxf_write_essence_container_refs(s);
983
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);
994     }
995
996     put_flush_packet(pb);
997 }
998
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
1008 };
1009
1010 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1011 {
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];
1030     }
1031     return NULL;
1032 }
1033
1034 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1035 {
1036     MXFContext *mxf = s->priv_data;
1037     MXFStreamContext *sc = st->priv_data;
1038     uint32_t c = -1;
1039     int i;
1040
1041     mxf->index_entries[mxf->edit_units_count].flags = 0;
1042
1043     for(i = 0; i < pkt->size - 4; i++) {
1044         c = (c<<8) + pkt->data[i];
1045         if (c == 0x1B5) {
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
1051                 break;
1052             }
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");
1068                 return 0;
1069             }
1070         }
1071     }
1072     sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1073     return !!sc->codec_ul;
1074 }
1075
1076 static int ff_audio_interleave_init(AVFormatContext *s,
1077                                     const int *samples_per_frame,
1078                                     AVRational time_base)
1079 {
1080     int i;
1081
1082     if (!samples_per_frame)
1083         return -1;
1084
1085     for (i = 0; i < s->nb_streams; i++) {
1086         AVStream *st = s->streams[i];
1087         AudioInterleaveContext *aic = st->priv_data;
1088
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");
1094                 return -1;
1095             }
1096             aic->samples_per_frame = samples_per_frame;
1097             aic->samples = aic->samples_per_frame;
1098             aic->time_base = time_base;
1099
1100             av_fifo_init(&aic->fifo, 100 * *aic->samples);
1101         }
1102     }
1103
1104     return 0;
1105 }
1106
1107 static void ff_audio_interleave_close(AVFormatContext *s)
1108 {
1109     int i;
1110     for (i = 0; i < s->nb_streams; i++) {
1111         AVStream *st = s->streams[i];
1112         AudioInterleaveContext *aic = st->priv_data;
1113
1114         if (st->codec->codec_type == CODEC_TYPE_AUDIO)
1115             av_fifo_free(&aic->fifo);
1116     }
1117 }
1118
1119 static int mxf_write_header(AVFormatContext *s)
1120 {
1121     MXFContext *mxf = s->priv_data;
1122     int i;
1123     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1124     const int *samples_per_frame = NULL;
1125
1126     if (s->nb_streams > 17) {
1127         av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1128         return -1;
1129     }
1130
1131     for (i = 0; i < s->nb_streams; i++) {
1132         AVStream *st = s->streams[i];
1133         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1134         if (!sc)
1135             return AVERROR(ENOMEM);
1136         st->priv_data = sc;
1137
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 };
1145             } else {
1146                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1147                 return -1;
1148             }
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");
1154                 return -1;
1155             }
1156             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1157         }
1158         sc->duration = -1;
1159
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);
1164             return -1;
1165         }
1166
1167         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1168
1169         if (!present[sc->index]) {
1170             mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1171             present[sc->index] = 1;
1172         } else
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);
1177     }
1178
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);
1184     }
1185
1186     if (!samples_per_frame)
1187         samples_per_frame = PAL_samples_per_frame;
1188
1189     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1190         return -1;
1191
1192     return 0;
1193 }
1194
1195 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1196 {
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;
1201
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");
1208             return -1;
1209         }
1210     }
1211
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");
1215             return -1;
1216         }
1217     }
1218
1219     if (!mxf->header_written) {
1220         mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
1221         mxf->header_written = 1;
1222     }
1223
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++;
1228     } else {
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;
1231     }
1232
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
1236
1237     sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1238
1239     put_flush_packet(pb);
1240     return 0;
1241 }
1242
1243 static void mxf_write_random_index_pack(AVFormatContext *s)
1244 {
1245     MXFContext *mxf = s->priv_data;
1246     ByteIOContext *pb = s->pb;
1247     uint64_t pos = url_ftell(pb);
1248
1249     put_buffer(pb, random_index_pack_key, 16);
1250     klv_encode_ber_length(pb, 28);
1251
1252     put_be32(pb, 1); // BodySID of header partition
1253     put_be64(pb, 0); // offset of header partition
1254
1255     put_be32(pb, 0); // BodySID of footer partition
1256     put_be64(pb, mxf->footer_partition_offset);
1257
1258     put_be32(pb, url_ftell(pb) - pos + 4);
1259 }
1260
1261 static int mxf_write_footer(AVFormatContext *s)
1262 {
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);
1268
1269     // add encoded ber length
1270     index_byte_count += 16 +
1271         (index_byte_count < 128 ? 1 : (av_log2(index_byte_count) >> 3) + 2);
1272
1273     mxf->footer_partition_offset = url_ftell(pb);
1274     mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
1275
1276     mxf_write_index_table_segment(s);
1277
1278     mxf_write_random_index_pack(s);
1279
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);
1283     }
1284
1285     ff_audio_interleave_close(s);
1286
1287     mxf_free(s);
1288     return 0;
1289 }
1290
1291 static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1292                                            int stream_index, int flush)
1293 {
1294     AVStream *st = s->streams[stream_index];
1295     AudioInterleaveContext *aic = st->priv_data;
1296
1297     int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1298     if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1299         return 0;
1300
1301     av_new_packet(pkt, size);
1302     av_fifo_read(&aic->fifo, pkt->data, size);
1303
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;
1308
1309     aic->samples++;
1310     if (!*aic->samples)
1311         aic->samples = aic->samples_per_frame;
1312
1313     return size;
1314 }
1315
1316 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1317 {
1318     AVPacketList *pktl;
1319     int stream_count = 0;
1320     int streams[MAX_STREAMS];
1321
1322     memset(streams, 0, sizeof(streams));
1323     pktl = s->packet_buffer;
1324     while (pktl) {
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])
1327             stream_count++;
1328         streams[pktl->pkt.stream_index]++;
1329         pktl = pktl->next;
1330     }
1331
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
1338             while (pktl) {
1339                 AVStream *st = s->streams[pktl->pkt.stream_index];
1340                 if (st->index == mxf->edit_unit_start)
1341                     break;
1342                 else if (!first)
1343                     first = pktl;
1344                 pktl = pktl->next;
1345             }
1346             // purge packet queue
1347             while (pktl) {
1348                 AVPacketList *next = pktl->next;
1349                 av_free_packet(&pktl->pkt);
1350                 av_freep(&pktl);
1351                 pktl = next;
1352             }
1353             if (!first)
1354                 goto out;
1355             pktl = first;
1356         }
1357
1358         *out = 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;
1361         av_freep(&pktl);
1362         return 1;
1363     } else {
1364     out:
1365         av_init_packet(out);
1366         return 0;
1367     }
1368 }
1369
1370 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1371 {
1372     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1373     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1374
1375     return next->dts > pkt->dts ||
1376         (next->dts == pkt->dts && sc->order < sc2->order);
1377 }
1378
1379 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1380 {
1381     int i;
1382
1383     if (pkt) {
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);
1388         } else {
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);
1393         }
1394         pkt = NULL;
1395     }
1396
1397     for (i = 0; i < s->nb_streams; i++) {
1398         AVStream *st = s->streams[i];
1399         if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1400             AVPacket new_pkt;
1401             while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1402                 ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1403         }
1404     }
1405
1406     return mxf_interleave_get_packet(s, out, pkt, flush);
1407 }
1408
1409 AVOutputFormat mxf_muxer = {
1410     "mxf",
1411     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1412     NULL,
1413     "mxf",
1414     sizeof(MXFContext),
1415     CODEC_ID_PCM_S16LE,
1416     CODEC_ID_MPEG2VIDEO,
1417     mxf_write_header,
1418     mxf_write_packet,
1419     mxf_write_footer,
1420     AVFMT_NOTIMESTAMPS,
1421     NULL,
1422     mxf_interleave,
1423 };