uses FF_ARRAY_ELEMS() where appropriate
[ffmpeg.git] / libavformat / mxfenc.c
1 /*
2  * MXF muxer
3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 /*
23  * References
24  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
25  * SMPTE 377M MXF File Format Specifications
26  * SMPTE 379M MXF Generic Container
27  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
28  * SMPTE RP210: SMPTE Metadata Dictionary
29  * SMPTE RP224: Registry of SMPTE Universal Labels
30  */
31
32 //#define DEBUG
33
34 #include "mxf.h"
35
36 typedef struct {
37     int local_tag;
38     UID uid;
39 } MXFLocalTagPair;
40
41 typedef struct {
42     UID track_essence_element_key;
43     int index; //<<< index in mxf_essence_container_uls table
44     const UID *codec_ul;
45     int64_t duration;
46 } MXFStreamContext;
47
48 typedef struct {
49     UID container_ul;
50     UID element_ul;
51     UID codec_ul;
52     enum CodecID id;
53     void (*write_desc)();
54 } MXFContainerEssenceEntry;
55
56 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
57 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
58
59 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
60     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
61       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
62       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
63       CODEC_ID_MPEG2VIDEO, mxf_write_mpegvideo_desc },
64     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
65       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
66       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
67       CODEC_ID_PCM_S16LE, mxf_write_wav_desc },
68     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
69       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
70       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
71       CODEC_ID_NONE, NULL },
72 };
73
74 typedef struct MXFContext {
75     int64_t footer_partition_offset;
76     int essence_container_count;
77     uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
78 } MXFContext;
79
80 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
81 static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };
82
83 /**
84  * complete key for operation pattern, partitions, and primer pack
85  */
86 static const uint8_t op1a_ul[]              = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
87 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
88 static const uint8_t primer_pack_key[]      = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
89
90
91 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
92 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
93
94 /**
95  * partial key for header metadata
96  */
97 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
98
99 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
100
101 /**
102  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
103  */
104 static const MXFLocalTagPair mxf_local_tag_batch[] = {
105     // preface set
106     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
107     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
108     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
109     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
110     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
111     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
112     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
113     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
114     // Identification
115     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
116     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
117     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
118     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
119     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
120     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
121     // Content Storage
122     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
123     // Essence Container Data
124     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
125     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
126     // Package
127     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
128     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
129     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
130     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
131     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
132     // Track
133     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
134     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
135     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
136     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
137     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
138     // Sequence
139     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
140     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
141     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
142     // Source Clip
143     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */
144     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
145     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
146     // File Descriptor
147     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
148     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
149     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
150     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
151     // Generic Picture Essence Descriptor
152     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
153     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
154     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
155     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
156     // Generic Sound Essence Descriptor
157     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
158     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
159     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
160     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
161 };
162
163 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
164 {
165     put_buffer(pb, uuid_base, 12);
166     put_be16(pb, type);
167     put_be16(pb, value);
168 }
169
170 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
171 {
172     put_buffer(pb, umid_base, 16);
173     mxf_write_uuid(pb, type, value);
174 }
175
176 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
177 {
178     put_be32(pb, ref_count);
179     put_be32(pb, 16);
180 }
181
182 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
183 {
184     // Determine the best BER size
185     int size;
186     if (len < 128) {
187         //short form
188         put_byte(pb, len);
189         return 1;
190     }
191
192     size = (av_log2(len) >> 3) + 1;
193
194     // long form
195     put_byte(pb, 0x80 + size);
196     while(size) {
197         size --;
198         put_byte(pb, len >> 8 * size & 0xff);
199     }
200     return 0;
201 }
202
203 /*
204  * Get essence container ul index
205  */
206 static int mxf_get_essence_container_ul_index(enum CodecID id)
207 {
208     int i;
209     for (i = 0; i < FF_ARRAY_ELEMS(mxf_essence_container_uls); i++)
210         if (mxf_essence_container_uls[i].id == id)
211             return i;
212     return -1;
213 }
214
215 static void mxf_write_primer_pack(AVFormatContext *s)
216 {
217     ByteIOContext *pb = s->pb;
218     int local_tag_number, i = 0;
219
220     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
221
222     put_buffer(pb, primer_pack_key, 16);
223     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
224
225     put_be32(pb, local_tag_number); // local_tag num
226     put_be32(pb, 18); // item size, always 18 according to the specs
227
228     for (i = 0; i < local_tag_number; i++) {
229         put_be16(pb, mxf_local_tag_batch[i].local_tag);
230         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
231     }
232 }
233
234 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
235 {
236     put_be16(pb, tag);
237     put_be16(pb, size);
238 }
239
240 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
241 {
242     put_buffer(pb, header_metadata_key, 13);
243     put_be24(pb, value);
244 }
245
246 static void mxf_free(AVFormatContext *s)
247 {
248     int i;
249
250     for (i = 0; i < s->nb_streams; i++) {
251         AVStream *st = s->streams[i];
252         av_freep(&st->priv_data);
253     }
254 }
255
256 static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
257 {
258     const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
259     while (uls->type != CODEC_TYPE_DATA) {
260         if (type == uls->type)
261             break;
262         uls++;
263     }
264     return uls;
265 }
266
267 static void mxf_write_essence_container_refs(AVFormatContext *s)
268 {
269     MXFContext *c = s->priv_data;
270     ByteIOContext *pb = s->pb;
271     int i;
272
273     mxf_write_refs_count(pb, c->essence_container_count);
274     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
275     for (i = 0; i < c->essence_container_count; i++) {
276         put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
277         PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
278     }
279 }
280
281 static void mxf_write_preface(AVFormatContext *s)
282 {
283     MXFContext *mxf = s->priv_data;
284     ByteIOContext *pb = s->pb;
285
286     mxf_write_metadata_key(pb, 0x012f00);
287     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
288     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
289
290     // write preface set uid
291     mxf_write_local_tag(pb, 16, 0x3C0A);
292     mxf_write_uuid(pb, Preface, 0);
293     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
294
295     // write create date as unknown
296     mxf_write_local_tag(pb, 8, 0x3B02);
297     put_be64(pb, 0);
298
299     // write version
300     mxf_write_local_tag(pb, 2, 0x3B05);
301     put_be16(pb, 1);
302
303     // write identification_refs
304     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
305     mxf_write_refs_count(pb, 1);
306     mxf_write_uuid(pb, Identification, 0);
307
308     // write content_storage_refs
309     mxf_write_local_tag(pb, 16, 0x3B03);
310     mxf_write_uuid(pb, ContentStorage, 0);
311
312     mxf_write_local_tag(pb, 16, 0x3B09);
313     put_buffer(pb, op1a_ul, 16);
314
315     // write essence_container_refs
316     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
317     mxf_write_essence_container_refs(s);
318
319     // write dm_scheme_refs
320     mxf_write_local_tag(pb, 8, 0x3B0B);
321     put_be64(pb, 0);
322 }
323
324 /*
325  * Write a local tag containing an ascii string as utf-16
326  */
327 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
328 {
329     int i, size = strlen(value);
330     mxf_write_local_tag(pb, size*2, tag);
331     for (i = 0; i < size; i++)
332         put_be16(pb, value[i]);
333 }
334
335 static void mxf_write_identification(AVFormatContext *s)
336 {
337     ByteIOContext *pb = s->pb;
338     const char *company = "FFmpeg";
339     const char *product = "OP1a Muxer";
340     const char *version;
341     int length;
342
343     mxf_write_metadata_key(pb, 0x013000);
344     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
345
346     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
347         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
348     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
349     klv_encode_ber_length(pb, length);
350
351     // write uid
352     mxf_write_local_tag(pb, 16, 0x3C0A);
353     mxf_write_uuid(pb, Identification, 0);
354     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
355
356     // write generation uid
357     mxf_write_local_tag(pb, 16, 0x3C09);
358     mxf_write_uuid(pb, Identification, 1);
359
360     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
361     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
362     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
363
364     // write product uid
365     mxf_write_local_tag(pb, 16, 0x3C05);
366     mxf_write_uuid(pb, Identification, 2);
367
368     // write modified date
369     mxf_write_local_tag(pb, 8, 0x3C06);
370     put_be64(pb, 0);
371 }
372
373 static void mxf_write_content_storage(AVFormatContext *s)
374 {
375     ByteIOContext *pb = s->pb;
376
377     mxf_write_metadata_key(pb, 0x011800);
378     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
379     klv_encode_ber_length(pb, 64);
380
381     // write uid
382     mxf_write_local_tag(pb, 16, 0x3C0A);
383     mxf_write_uuid(pb, ContentStorage, 0);
384     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
385
386     // write package reference
387     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
388     mxf_write_refs_count(pb, 2);
389     mxf_write_uuid(pb, MaterialPackage, 0);
390     mxf_write_uuid(pb, SourcePackage, 0);
391 }
392
393 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
394 {
395     ByteIOContext *pb = s->pb;
396     MXFStreamContext *sc = st->priv_data;
397
398     mxf_write_metadata_key(pb, 0x013b00);
399     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
400     klv_encode_ber_length(pb, 80);
401
402     // write track uid
403     mxf_write_local_tag(pb, 16, 0x3C0A);
404     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
405     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
406
407     // write track id
408     mxf_write_local_tag(pb, 4, 0x4801);
409     put_be32(pb, st->index);
410
411     // write track number
412     mxf_write_local_tag(pb, 4, 0x4804);
413     if (type == MaterialPackage)
414         put_be32(pb, 0); // track number of material package is 0
415     else
416         put_buffer(pb, sc->track_essence_element_key + 12, 4);
417
418     mxf_write_local_tag(pb, 8, 0x4B01);
419     put_be32(pb, st->time_base.den);
420     put_be32(pb, st->time_base.num);
421
422     // write origin
423     mxf_write_local_tag(pb, 8, 0x4B02);
424     put_be64(pb, 0);
425
426     // write sequence refs
427     mxf_write_local_tag(pb, 16, 0x4803);
428     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
429 }
430
431 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
432 {
433     const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
434     MXFStreamContext *sc = st->priv_data;
435
436     // find data define uls
437     mxf_write_local_tag(pb, 16, 0x0201);
438     put_buffer(pb, data_def_ul->uid, 16);
439
440     // write duration
441     mxf_write_local_tag(pb, 8, 0x0202);
442     put_be64(pb, sc->duration);
443 }
444
445 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
446 {
447     ByteIOContext *pb = s->pb;
448
449     mxf_write_metadata_key(pb, 0x010f00);
450     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
451     klv_encode_ber_length(pb, 80);
452
453     mxf_write_local_tag(pb, 16, 0x3C0A);
454     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
455
456     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
457     mxf_write_common_fields(pb, st);
458
459     // write structural component
460     mxf_write_local_tag(pb, 16 + 8, 0x1001);
461     mxf_write_refs_count(pb, 1);
462     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
463 }
464
465 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
466 {
467     ByteIOContext *pb = s->pb;
468     int i;
469
470     mxf_write_metadata_key(pb, 0x011100);
471     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
472     klv_encode_ber_length(pb, 108);
473
474     // write uid
475     mxf_write_local_tag(pb, 16, 0x3C0A);
476     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
477
478     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
479     mxf_write_common_fields(pb, st);
480
481     // write start_position
482     mxf_write_local_tag(pb, 8, 0x1201);
483     put_be64(pb, 0);
484
485     // write source package uid, end of the reference
486     mxf_write_local_tag(pb, 32, 0x1101);
487     if (type == SourcePackage) {
488         for (i = 0; i < 4; i++)
489             put_be64(pb, 0);
490     } else
491         mxf_write_umid(pb, SourcePackage, 0);
492
493     // write source track id
494     mxf_write_local_tag(pb, 4, 0x1102);
495     if (type == SourcePackage)
496         put_be32(pb, 0);
497     else
498         put_be32(pb, st->index);
499 }
500
501 static void mxf_write_multi_descriptor(AVFormatContext *s)
502 {
503     ByteIOContext *pb = s->pb;
504     int i;
505
506     mxf_write_metadata_key(pb, 0x014400);
507     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
508     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
509
510     mxf_write_local_tag(pb, 16, 0x3C0A);
511     mxf_write_uuid(pb, MultipleDescriptor, 0);
512     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
513
514     // write sample rate
515     mxf_write_local_tag(pb, 8, 0x3001);
516     put_be32(pb, s->streams[0]->time_base.den);
517     put_be32(pb, s->streams[0]->time_base.num);
518
519     // write essence container ul
520     mxf_write_local_tag(pb, 16, 0x3004);
521     put_buffer(pb, multiple_desc_ul, 16);
522
523     // write sub descriptor refs
524     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
525     mxf_write_refs_count(pb, s->nb_streams);
526     for (i = 0; i < s->nb_streams; i++)
527         mxf_write_uuid(pb, SubDescriptor, i);
528 }
529
530 static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key)
531 {
532     MXFStreamContext *sc = st->priv_data;
533
534     put_buffer(pb, key, 16);
535     klv_encode_ber_length(pb, 108);
536
537     mxf_write_local_tag(pb, 16, 0x3C0A);
538     mxf_write_uuid(pb, SubDescriptor, st->index);
539
540     mxf_write_local_tag(pb, 4, 0x3006);
541     put_be32(pb, st->index);
542
543     mxf_write_local_tag(pb, 8, 0x3001);
544     put_be32(pb, st->time_base.den);
545     put_be32(pb, st->time_base.num);
546
547     mxf_write_local_tag(pb, 16, 0x3004);
548     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
549
550     mxf_write_local_tag(pb, 16, 0x3201);
551     put_buffer(pb, *sc->codec_ul, 16);
552 }
553
554 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
555 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
556
557 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
558 {
559     ByteIOContext *pb = s->pb;
560
561     mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key);
562
563     mxf_write_local_tag(pb, 4, 0x3203);
564     put_be32(pb, st->codec->width);
565
566     mxf_write_local_tag(pb, 4, 0x3202);
567     put_be32(pb, st->codec->height);
568
569     mxf_write_local_tag(pb, 8, 0x320E);
570     put_be32(pb, st->codec->height * st->sample_aspect_ratio.den);
571     put_be32(pb, st->codec->width  * st->sample_aspect_ratio.num);
572 }
573
574 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
575 {
576     ByteIOContext *pb = s->pb;
577
578     mxf_write_generic_desc(pb, st, mxf_wav_descriptor_key);
579
580     // write audio sampling rate
581     mxf_write_local_tag(pb, 8, 0x3D03);
582     put_be32(pb, st->codec->sample_rate);
583     put_be32(pb, 1);
584
585     mxf_write_local_tag(pb, 4, 0x3D07);
586     put_be32(pb, st->codec->channels);
587
588     mxf_write_local_tag(pb, 4, 0x3D01);
589     put_be32(pb, st->codec->bits_per_coded_sample);
590 }
591
592 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
593 {
594     ByteIOContext *pb = s->pb;
595     int i;
596
597     if (type == MaterialPackage) {
598         mxf_write_metadata_key(pb, 0x013600);
599         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
600         klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
601     } else {
602         mxf_write_metadata_key(pb, 0x013700);
603         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
604         klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
605     }
606
607     // write uid
608     mxf_write_local_tag(pb, 16, 0x3C0A);
609     mxf_write_uuid(pb, type, 0);
610     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
611     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
612
613     // write package umid
614     mxf_write_local_tag(pb, 32, 0x4401);
615     mxf_write_umid(pb, type, 0);
616     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
617
618     // write create date
619     mxf_write_local_tag(pb, 8, 0x4405);
620     put_be64(pb, 0);
621
622     // write modified date
623     mxf_write_local_tag(pb, 8, 0x4404);
624     put_be64(pb, 0);
625
626     // write track refs
627     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
628     mxf_write_refs_count(pb, s->nb_streams);
629     for (i = 0; i < s->nb_streams; i++)
630         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
631
632     // write multiple descriptor reference
633     if (type == SourcePackage) {
634         mxf_write_local_tag(pb, 16, 0x4701);
635         if (s->nb_streams > 1) {
636             mxf_write_uuid(pb, MultipleDescriptor, 0);
637             mxf_write_multi_descriptor(s);
638         } else
639             mxf_write_uuid(pb, SubDescriptor, 0);
640     }
641
642     for (i = 0; i < s->nb_streams; i++) {
643         AVStream *st = s->streams[i];
644         mxf_write_track(s, st, type);
645         mxf_write_sequence(s, st, type);
646         mxf_write_structural_component(s, st, type);
647
648         if (type == SourcePackage) {
649             MXFStreamContext *sc = st->priv_data;
650             mxf_essence_container_uls[sc->index].write_desc(s, st);
651         }
652     }
653 }
654
655 static int mxf_write_header_metadata_sets(AVFormatContext *s)
656 {
657     mxf_write_preface(s);
658     mxf_write_identification(s);
659     mxf_write_content_storage(s);
660     mxf_write_package(s, MaterialPackage);
661     mxf_write_package(s, SourcePackage);
662     return 0;
663 }
664
665 static void mxf_write_partition(AVFormatContext *s, int bodysid, const uint8_t *key, int write_metadata)
666 {
667     MXFContext *mxf = s->priv_data;
668     ByteIOContext *pb = s->pb;
669     int64_t header_byte_count_offset;
670
671     // write klv
672     put_buffer(pb, key, 16);
673
674     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
675
676     // write partition value
677     put_be16(pb, 1); // majorVersion
678     put_be16(pb, 2); // minorVersion
679     put_be32(pb, 1); // kagSize
680
681     put_be64(pb, url_ftell(pb) - 25); // thisPartition
682     put_be64(pb, 0); // previousPartition
683
684     put_be64(pb, mxf->footer_partition_offset); // footerPartition
685
686     // set offset
687     header_byte_count_offset = url_ftell(pb);
688     put_be64(pb, 0); // headerByteCount, update later
689
690     // no indexTable
691     put_be64(pb, 0); // indexByteCount
692     put_be32(pb, 0); // indexSID
693     put_be64(pb, 0); // bodyOffset
694
695     put_be32(pb, bodysid); // bodySID
696     put_buffer(pb, op1a_ul, 16); // operational pattern
697
698     // essence container
699     mxf_write_essence_container_refs(s);
700
701     if (write_metadata) {
702         // mark the start of the headermetadata and calculate metadata size
703         int64_t pos, start = url_ftell(s->pb);
704         mxf_write_primer_pack(s);
705         mxf_write_header_metadata_sets(s);
706         pos = url_ftell(s->pb);
707         // update header_byte_count
708         url_fseek(pb, header_byte_count_offset, SEEK_SET);
709         put_be64(pb, pos - start);
710         url_fseek(pb, pos, SEEK_SET);
711     }
712
713     put_flush_packet(pb);
714 }
715
716 static const UID mxf_mpeg2_codec_uls[] = {
717     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
718     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
719     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
720     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
721     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
722     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
723     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
724     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
725 };
726
727 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
728 {
729     if (avctx->profile == 4) { // Main
730         if (avctx->level == 8) // Main
731             return avctx->gop_size ?
732                 &mxf_mpeg2_codec_uls[1] :
733                 &mxf_mpeg2_codec_uls[0];
734         else if (avctx->level == 4) // High
735             return avctx->gop_size ?
736                 &mxf_mpeg2_codec_uls[5] :
737                 &mxf_mpeg2_codec_uls[4];
738     } else if (avctx->profile == 0) { // 422
739         if (avctx->level == 5) // Main
740             return avctx->gop_size ?
741                 &mxf_mpeg2_codec_uls[3] :
742                 &mxf_mpeg2_codec_uls[2];
743         else if (avctx->level == 2) // High
744             return avctx->gop_size ?
745                 &mxf_mpeg2_codec_uls[7] :
746                 &mxf_mpeg2_codec_uls[6];
747     }
748     return NULL;
749 }
750
751 static int mxf_write_header(AVFormatContext *s)
752 {
753     MXFContext *mxf = s->priv_data;
754     int i;
755     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
756
757     for (i = 0; i < s->nb_streams; i++) {
758         AVStream *st = s->streams[i];
759         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
760         if (!sc)
761             return AVERROR(ENOMEM);
762         st->priv_data = sc;
763         // set pts information
764         if (st->codec->codec_type == CODEC_TYPE_VIDEO)
765             av_set_pts_info(st, 64, 1, st->codec->time_base.den);
766         else if (st->codec->codec_type == CODEC_TYPE_AUDIO)
767             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
768         sc->duration = -1;
769
770         sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
771         if (sc->index == -1) {
772             av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
773                    "codec not currently supported in container\n", i);
774             return -1;
775         }
776
777         if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
778             if (st->codec->profile == FF_PROFILE_UNKNOWN ||
779                 st->codec->level == FF_LEVEL_UNKNOWN) {
780                 av_log(s, AV_LOG_ERROR, "track %d: profile and level must be set for mpeg-2\n", i);
781                 return -1;
782             }
783             sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
784             if (!sc->codec_ul) {
785                 av_log(s, AV_LOG_ERROR, "track %d: could not find codec ul for mpeg-2, "
786                        "unsupported profile/level\n", i);
787                 return -1;
788             }
789         } else
790             sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
791
792         if (!present[sc->index]) {
793             mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
794             present[sc->index] = 1;
795         } else
796             present[sc->index]++;
797         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
798         sc->track_essence_element_key[15] = present[sc->index];
799         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
800     }
801
802     mxf_write_partition(s, 1, header_open_partition_key, 1);
803
804     return 0;
805 }
806
807 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
808 {
809     ByteIOContext *pb = s->pb;
810     AVStream *st = s->streams[pkt->stream_index];
811     MXFStreamContext *sc = st->priv_data;
812
813     put_buffer(pb, sc->track_essence_element_key, 16); // write key
814     klv_encode_ber_length(pb, pkt->size); // write length
815     put_buffer(pb, pkt->data, pkt->size); // write value
816
817     sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
818
819     put_flush_packet(pb);
820     return 0;
821 }
822
823 static int mxf_write_footer(AVFormatContext *s)
824 {
825     MXFContext *mxf = s->priv_data;
826     ByteIOContext *pb = s->pb;
827
828     mxf->footer_partition_offset = url_ftell(pb);
829     mxf_write_partition(s, 0, footer_partition_key, 0);
830     if (!url_is_streamed(s->pb)) {
831         url_fseek(pb, 0, SEEK_SET);
832         mxf_write_partition(s, 1, header_closed_partition_key, 1);
833     }
834     mxf_free(s);
835     return 0;
836 }
837
838 AVOutputFormat mxf_muxer = {
839     "mxf",
840     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
841     NULL,
842     "mxf",
843     sizeof(MXFContext),
844     CODEC_ID_PCM_S16LE,
845     CODEC_ID_MPEG2VIDEO,
846     mxf_write_header,
847     mxf_write_packet,
848     mxf_write_footer,
849 };
850
851