FFmpeg  4.0
id3v2enc.c
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1 /*
2  * ID3v2 header writer
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
24 #include "libavutil/avstring.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/intreadwrite.h"
27 #include "avformat.h"
28 #include "avio.h"
29 #include "avio_internal.h"
30 #include "id3v2.h"
31 
32 static void id3v2_put_size(AVIOContext *pb, int size)
33 {
34  avio_w8(pb, size >> 21 & 0x7f);
35  avio_w8(pb, size >> 14 & 0x7f);
36  avio_w8(pb, size >> 7 & 0x7f);
37  avio_w8(pb, size & 0x7f);
38 }
39 
40 static int string_is_ascii(const uint8_t *str)
41 {
42  while (*str && *str < 128) str++;
43  return !*str;
44 }
45 
46 static void id3v2_encode_string(AVIOContext *pb, const uint8_t *str,
47  enum ID3v2Encoding enc)
48 {
49  int (*put)(AVIOContext*, const char*);
50 
51  if (enc == ID3v2_ENCODING_UTF16BOM) {
52  avio_wl16(pb, 0xFEFF); /* BOM */
53  put = avio_put_str16le;
54  } else
55  put = avio_put_str;
56 
57  put(pb, str);
58 }
59 
60 /**
61  * Write a text frame with one (normal frames) or two (TXXX frames) strings
62  * according to encoding (only UTF-8 or UTF-16+BOM supported).
63  * @return number of bytes written or a negative error code.
64  */
65 static int id3v2_put_ttag(ID3v2EncContext *id3, AVIOContext *avioc, const char *str1, const char *str2,
66  uint32_t tag, enum ID3v2Encoding enc)
67 {
68  int len;
69  uint8_t *pb;
70  AVIOContext *dyn_buf;
71  if (avio_open_dyn_buf(&dyn_buf) < 0)
72  return AVERROR(ENOMEM);
73 
74  /* check if the strings are ASCII-only and use UTF16 only if
75  * they're not */
76  if (enc == ID3v2_ENCODING_UTF16BOM && string_is_ascii(str1) &&
77  (!str2 || string_is_ascii(str2)))
79 
80  avio_w8(dyn_buf, enc);
81  id3v2_encode_string(dyn_buf, str1, enc);
82  if (str2)
83  id3v2_encode_string(dyn_buf, str2, enc);
84  len = avio_close_dyn_buf(dyn_buf, &pb);
85 
86  avio_wb32(avioc, tag);
87  /* ID3v2.3 frame size is not sync-safe */
88  if (id3->version == 3)
89  avio_wb32(avioc, len);
90  else
91  id3v2_put_size(avioc, len);
92  avio_wb16(avioc, 0);
93  avio_write(avioc, pb, len);
94 
95  av_freep(&pb);
96  return len + ID3v2_HEADER_SIZE;
97 }
98 
99 /**
100  * Write a priv frame with owner and data. 'key' is the owner prepended with
101  * ID3v2_PRIV_METADATA_PREFIX. 'data' is provided as a string. Any \xXX
102  * (where 'X' is a valid hex digit) will be unescaped to the byte value.
103  */
104 static int id3v2_put_priv(ID3v2EncContext *id3, AVIOContext *avioc, const char *key, const char *data)
105 {
106  int len;
107  uint8_t *pb;
108  AVIOContext *dyn_buf;
109 
110  if (!av_strstart(key, ID3v2_PRIV_METADATA_PREFIX, &key)) {
111  return 0;
112  }
113 
114  if (avio_open_dyn_buf(&dyn_buf) < 0)
115  return AVERROR(ENOMEM);
116 
117  // owner + null byte.
118  avio_write(dyn_buf, key, strlen(key) + 1);
119 
120  while (*data) {
121  if (av_strstart(data, "\\x", &data)) {
122  if (data[0] && data[1] && av_isxdigit(data[0]) && av_isxdigit(data[1])) {
123  char digits[] = {data[0], data[1], 0};
124  avio_w8(dyn_buf, strtol(digits, NULL, 16));
125  data += 2;
126  } else {
127  ffio_free_dyn_buf(&dyn_buf);
128  av_log(avioc, AV_LOG_ERROR, "Invalid escape '\\x%.2s' in metadata tag '"
129  ID3v2_PRIV_METADATA_PREFIX "%s'.\n", data, key);
130  return AVERROR(EINVAL);
131  }
132  } else {
133  avio_write(dyn_buf, data++, 1);
134  }
135  }
136 
137  len = avio_close_dyn_buf(dyn_buf, &pb);
138 
139  avio_wb32(avioc, MKBETAG('P', 'R', 'I', 'V'));
140  if (id3->version == 3)
141  avio_wb32(avioc, len);
142  else
143  id3v2_put_size(avioc, len);
144  avio_wb16(avioc, 0);
145  avio_write(avioc, pb, len);
146 
147  av_free(pb);
148 
149  return len + ID3v2_HEADER_SIZE;
150 }
151 
153  const char table[][4], enum ID3v2Encoding enc)
154 {
155  uint32_t tag;
156  int i;
157 
158  if (t->key[0] != 'T' || strlen(t->key) != 4)
159  return -1;
160  tag = AV_RB32(t->key);
161  for (i = 0; *table[i]; i++)
162  if (tag == AV_RB32(table[i]))
163  return id3v2_put_ttag(id3, pb, t->value, NULL, tag, enc);
164  return -1;
165 }
166 
168 {
169  AVDictionaryEntry *mtag = NULL;
170  AVDictionary *dst = NULL;
171  const char *key, *value;
172  char year[5] = {0}, day_month[5] = {0};
173  int i;
174 
175  while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) {
176  key = mtag->key;
177  if (!av_strcasecmp(key, "date")) {
178  /* split date tag using "YYYY-MM-DD" format into year and month/day segments */
179  value = mtag->value;
180  i = 0;
181  while (value[i] >= '0' && value[i] <= '9') i++;
182  if (value[i] == '\0' || value[i] == '-') {
183  av_strlcpy(year, value, sizeof(year));
184  av_dict_set(&dst, "TYER", year, 0);
185 
186  if (value[i] == '-' &&
187  value[i+1] >= '0' && value[i+1] <= '1' &&
188  value[i+2] >= '0' && value[i+2] <= '9' &&
189  value[i+3] == '-' &&
190  value[i+4] >= '0' && value[i+4] <= '3' &&
191  value[i+5] >= '0' && value[i+5] <= '9' &&
192  (value[i+6] == '\0' || value[i+6] == ' ')) {
193  snprintf(day_month, sizeof(day_month), "%.2s%.2s", value + i + 4, value + i + 1);
194  av_dict_set(&dst, "TDAT", day_month, 0);
195  }
196  } else
197  av_dict_set(&dst, key, value, 0);
198  } else
199  av_dict_set(&dst, key, mtag->value, 0);
200  }
201  av_dict_free(pm);
202  *pm = dst;
203 }
204 
205 void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version,
206  const char *magic)
207 {
208  id3->version = id3v2_version;
209 
210  avio_wb32(pb, MKBETAG(magic[0], magic[1], magic[2], id3v2_version));
211  avio_w8(pb, 0);
212  avio_w8(pb, 0); /* flags */
213 
214  /* reserve space for size */
215  id3->size_pos = avio_tell(pb);
216  avio_wb32(pb, 0);
217 }
218 
219 static int write_metadata(AVIOContext *pb, AVDictionary **metadata,
220  ID3v2EncContext *id3, int enc)
221 {
222  AVDictionaryEntry *t = NULL;
223  int ret;
224 
226  if (id3->version == 3)
227  id3v2_3_metadata_split_date(metadata);
228  else if (id3->version == 4)
230 
231  while ((t = av_dict_get(*metadata, "", t, AV_DICT_IGNORE_SUFFIX))) {
232  if ((ret = id3v2_check_write_tag(id3, pb, t, ff_id3v2_tags, enc)) > 0) {
233  id3->len += ret;
234  continue;
235  }
236  if ((ret = id3v2_check_write_tag(id3, pb, t, id3->version == 3 ?
237  ff_id3v2_3_tags : ff_id3v2_4_tags, enc)) > 0) {
238  id3->len += ret;
239  continue;
240  }
241 
242  if ((ret = id3v2_put_priv(id3, pb, t->key, t->value)) > 0) {
243  id3->len += ret;
244  continue;
245  } else if (ret < 0) {
246  return ret;
247  }
248 
249  /* unknown tag, write as TXXX frame */
250  if ((ret = id3v2_put_ttag(id3, pb, t->key, t->value, MKBETAG('T', 'X', 'X', 'X'), enc)) < 0)
251  return ret;
252  id3->len += ret;
253  }
254 
255  return 0;
256 }
257 
258 static int write_chapter(AVFormatContext *s, ID3v2EncContext *id3, int id, int enc)
259 {
260  const AVRational time_base = {1, 1000};
261  AVChapter *ch = s->chapters[id];
262  uint8_t *dyn_buf = NULL;
263  AVIOContext *dyn_bc = NULL;
264  char name[123];
265  int len, start, end, ret;
266 
267  if ((ret = avio_open_dyn_buf(&dyn_bc)) < 0)
268  goto fail;
269 
270  start = av_rescale_q(ch->start, ch->time_base, time_base);
271  end = av_rescale_q(ch->end, ch->time_base, time_base);
272 
273  snprintf(name, 122, "ch%d", id);
274  id3->len += avio_put_str(dyn_bc, name);
275  avio_wb32(dyn_bc, start);
276  avio_wb32(dyn_bc, end);
277  avio_wb32(dyn_bc, 0xFFFFFFFFu);
278  avio_wb32(dyn_bc, 0xFFFFFFFFu);
279 
280  if ((ret = write_metadata(dyn_bc, &ch->metadata, id3, enc)) < 0)
281  goto fail;
282 
283  len = avio_close_dyn_buf(dyn_bc, &dyn_buf);
284  id3->len += 16 + ID3v2_HEADER_SIZE;
285 
286  avio_wb32(s->pb, MKBETAG('C', 'H', 'A', 'P'));
287  avio_wb32(s->pb, len);
288  avio_wb16(s->pb, 0);
289  avio_write(s->pb, dyn_buf, len);
290 
291 fail:
292  if (dyn_bc && !dyn_buf)
293  avio_close_dyn_buf(dyn_bc, &dyn_buf);
294  av_freep(&dyn_buf);
295 
296  return ret;
297 }
298 
300 {
301  int enc = id3->version == 3 ? ID3v2_ENCODING_UTF16BOM :
303  int i, ret;
304 
306  if ((ret = write_metadata(s->pb, &s->metadata, id3, enc)) < 0)
307  return ret;
308 
309  for (i = 0; i < s->nb_chapters; i++) {
310  if ((ret = write_chapter(s, id3, i, enc)) < 0)
311  return ret;
312  }
313 
314  return 0;
315 }
316 
318 {
319  AVStream *st = s->streams[pkt->stream_index];
321 
322  AVIOContext *dyn_buf;
323  uint8_t *buf;
324  const CodecMime *mime = ff_id3v2_mime_tags;
325  const char *mimetype = NULL, *desc = "";
326  int enc = id3->version == 3 ? ID3v2_ENCODING_UTF16BOM :
328  int i, len, type = 0;
329 
330  /* get the mimetype*/
331  while (mime->id != AV_CODEC_ID_NONE) {
332  if (mime->id == st->codecpar->codec_id) {
333  mimetype = mime->str;
334  break;
335  }
336  mime++;
337  }
338  if (!mimetype) {
339  av_log(s, AV_LOG_ERROR, "No mimetype is known for stream %d, cannot "
340  "write an attached picture.\n", st->index);
341  return AVERROR(EINVAL);
342  }
343 
344  /* get the picture type */
345  e = av_dict_get(st->metadata, "comment", NULL, 0);
346  for (i = 0; e && i < FF_ARRAY_ELEMS(ff_id3v2_picture_types); i++) {
348  type = i;
349  break;
350  }
351  }
352 
353  /* get the description */
354  if ((e = av_dict_get(st->metadata, "title", NULL, 0)))
355  desc = e->value;
356 
357  /* use UTF16 only for non-ASCII strings */
358  if (enc == ID3v2_ENCODING_UTF16BOM && string_is_ascii(desc))
360 
361  /* start writing */
362  if (avio_open_dyn_buf(&dyn_buf) < 0)
363  return AVERROR(ENOMEM);
364 
365  avio_w8(dyn_buf, enc);
366  avio_put_str(dyn_buf, mimetype);
367  avio_w8(dyn_buf, type);
368  id3v2_encode_string(dyn_buf, desc, enc);
369  avio_write(dyn_buf, pkt->data, pkt->size);
370  len = avio_close_dyn_buf(dyn_buf, &buf);
371 
372  avio_wb32(s->pb, MKBETAG('A', 'P', 'I', 'C'));
373  if (id3->version == 3)
374  avio_wb32(s->pb, len);
375  else
376  id3v2_put_size(s->pb, len);
377  avio_wb16(s->pb, 0);
378  avio_write(s->pb, buf, len);
379  av_freep(&buf);
380 
381  id3->len += len + ID3v2_HEADER_SIZE;
382 
383  return 0;
384 }
385 
387  int padding_bytes)
388 {
389  int64_t cur_pos;
390 
391  if (padding_bytes < 0)
392  padding_bytes = 10;
393 
394  /* The ID3v2.3 specification states that 28 bits are used to represent the
395  * size of the whole tag. Therefore the current size of the tag needs to be
396  * subtracted from the upper limit of 2^28-1 to clip the value correctly. */
397  /* The minimum of 10 is an arbitrary amount of padding at the end of the tag
398  * to fix cover art display with some software such as iTunes, Traktor,
399  * Serato, Torq. */
400  padding_bytes = av_clip(padding_bytes, 10, 268435455 - id3->len);
401  ffio_fill(pb, 0, padding_bytes);
402  id3->len += padding_bytes;
403 
404  cur_pos = avio_tell(pb);
405  avio_seek(pb, id3->size_pos, SEEK_SET);
406  id3v2_put_size(pb, id3->len);
407  avio_seek(pb, cur_pos, SEEK_SET);
408 }
409 
410 int ff_id3v2_write_simple(struct AVFormatContext *s, int id3v2_version,
411  const char *magic)
412 {
413  ID3v2EncContext id3 = { 0 };
414  int ret;
415 
416  ff_id3v2_start(&id3, s->pb, id3v2_version, magic);
417  if ((ret = ff_id3v2_write_metadata(s, &id3)) < 0)
418  return ret;
420 
421  return 0;
422 }
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1569
const char * name
Definition: avisynth_c.h:775
#define NULL
Definition: coverity.c:32
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:469
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:161
Buffered I/O operations.
int size
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1420
int len
size of the tag written so far
Definition: id3v2.h:54
const char * desc
Definition: nvenc.c:65
int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
Convert and write all global metadata from s into an ID3v2 tag.
Definition: id3v2enc.c:299
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3884
int index
stream index in AVFormatContext
Definition: avformat.h:874
int size
Definition: avcodec.h:1431
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
#define ID3v2_PRIV_METADATA_PREFIX
Definition: id3v2.h:42
const char ff_id3v2_4_tags[][4]
ID3v2.4-only text information frames.
Definition: id3v2.c:95
const char * key
static AVPacket pkt
AVDictionary * metadata
Definition: avformat.h:1303
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1391
Format I/O context.
Definition: avformat.h:1342
ID3v2Encoding
Definition: id3v2.h:44
char str[32]
Definition: internal.h:50
Public dictionary API.
void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, const char *magic)
Initialize an ID3v2 tag.
Definition: id3v2enc.c:205
#define ID3v2_HEADER_SIZE
Definition: id3v2.h:30
const AVMetadataConv ff_id3v2_34_metadata_conv[]
Definition: id3v2.c:44
uint8_t
#define AV_RB32
Definition: intreadwrite.h:130
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1410
const char data[16]
Definition: mxf.c:90
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
uint8_t * data
Definition: avcodec.h:1430
uint32_t tag
Definition: movenc.c:1455
enum AVCodecID id
Definition: internal.h:51
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:218
#define av_log(a,...)
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1580
const AVMetadataConv ff_id3v2_4_metadata_conv[]
Definition: id3v2.c:63
#define AVERROR(e)
Definition: error.h:43
static const struct endianess table[]
static int string_is_ascii(const uint8_t *str)
Definition: id3v2enc.c:40
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
AVChapter ** chapters
Definition: avformat.h:1570
static int write_chapter(AVFormatContext *s, ID3v2EncContext *id3, int id, int enc)
Definition: id3v2enc.c:258
int ff_standardize_creation_time(AVFormatContext *s)
Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.
Definition: utils.c:5628
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:116
const CodecMime ff_id3v2_mime_tags[]
Definition: id3v2.c:130
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:204
int64_t size_pos
offset of the tag total size
Definition: id3v2.h:53
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
AVDictionary * metadata
Definition: avformat.h:937
void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb, int padding_bytes)
Finalize an opened ID3v2 tag.
Definition: id3v2enc.c:386
if(ret< 0)
Definition: vf_mcdeint.c:279
#define FF_ARRAY_ELEMS(a)
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1450
int avio_put_str(AVIOContext *s, const char *str)
Write a NULL-terminated string.
Definition: aviobuf.c:385
int metadata_header_padding
Number of bytes to be written as padding in a metadata header.
Definition: avformat.h:1840
Stream structure.
Definition: avformat.h:873
int64_t end
chapter start/end time in time_base units
Definition: avformat.h:1302
const char ff_id3v2_tags[][4]
A list of text information frames allowed in both ID3 v2.3 and v2.4 http://www.id3.org/id3v2.4.0-frames http://www.id3.org/id3v2.4.0-changes.
Definition: id3v2.c:87
AVIOContext * pb
I/O context.
Definition: avformat.h:1384
static int id3v2_check_write_tag(ID3v2EncContext *id3, AVIOContext *pb, AVDictionaryEntry *t, const char table[][4], enum ID3v2Encoding enc)
Definition: id3v2enc.c:152
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:196
void * buf
Definition: avisynth_c.h:690
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
double value
Definition: eval.c:98
Rational number (pair of numerator and denominator).
Definition: rational.h:58
static int write_metadata(AVIOContext *pb, AVDictionary **metadata, ID3v2EncContext *id3, int enc)
Definition: id3v2enc.c:219
cl_device_type type
int avio_put_str16le(AVIOContext *s, const char *str)
Convert an UTF-8 string to UTF-16LE and write it.
static void id3v2_encode_string(AVIOContext *pb, const uint8_t *str, enum ID3v2Encoding enc)
Definition: id3v2enc.c:46
#define snprintf
Definition: snprintf.h:34
static av_const int av_isxdigit(int c)
Locale-independent conversion of ASCII isxdigit.
Definition: avstring.h:251
int ff_id3v2_write_simple(struct AVFormatContext *s, int id3v2_version, const char *magic)
Write an ID3v2 tag containing all global metadata from s.
Definition: id3v2enc.c:410
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:475
int64_t start
Definition: avformat.h:1302
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:34
static int id3v2_put_ttag(ID3v2EncContext *id3, AVIOContext *avioc, const char *str1, const char *str2, uint32_t tag, enum ID3v2Encoding enc)
Write a text frame with one (normal frames) or two (TXXX frames) strings according to encoding (only ...
Definition: id3v2enc.c:65
Main libavformat public API header.
int
static void id3v2_put_size(AVIOContext *pb, int size)
Definition: id3v2enc.c:32
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1301
char * key
Definition: dict.h:86
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
#define MKBETAG(a, b, c, d)
Definition: common.h:367
const char ff_id3v2_3_tags[][4]
ID3v2.3-only text information frames.
Definition: id3v2.c:101
#define av_free(p)
char * value
Definition: dict.h:87
static int id3v2_put_priv(ID3v2EncContext *id3, AVIOContext *avioc, const char *key, const char *data)
Write a priv frame with owner and data.
Definition: id3v2enc.c:104
int len
int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt)
Write an attached picture from pkt into an ID3v2 tag.
Definition: id3v2enc.c:317
static void id3v2_3_metadata_split_date(AVDictionary **pm)
Definition: id3v2enc.c:167
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:377
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:690
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1020
const char *const ff_id3v2_picture_types[21]
Definition: id3v2.c:106
int stream_index
Definition: avcodec.h:1432
int version
ID3v2 minor version, either 3 or 4.
Definition: id3v2.h:52
enum AVCodecID id
This structure stores compressed data.
Definition: avcodec.h:1407