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2ba45a60 DM |
1 | /* |
2 | * WAV muxer | |
3 | * Copyright (c) 2001, 2002 Fabrice Bellard | |
4 | * | |
5 | * Sony Wave64 muxer | |
6 | * Copyright (c) 2012 Paul B Mahol | |
7 | * | |
8 | * WAV muxer RF64 support | |
9 | * Copyright (c) 2013 Daniel Verkamp <daniel@drv.nu> | |
10 | * | |
11 | * EBU Tech 3285 - Supplement 3 - Peak Envelope Chunk encoder | |
12 | * Copyright (c) 2014 Georg Lippitsch <georg.lippitsch@gmx.at> | |
13 | * | |
14 | * This file is part of FFmpeg. | |
15 | * | |
16 | * FFmpeg is free software; you can redistribute it and/or | |
17 | * modify it under the terms of the GNU Lesser General Public | |
18 | * License as published by the Free Software Foundation; either | |
19 | * version 2.1 of the License, or (at your option) any later version. | |
20 | * | |
21 | * FFmpeg is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
24 | * Lesser General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU Lesser General Public | |
27 | * License along with FFmpeg; if not, write to the Free Software | |
28 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
29 | */ | |
30 | ||
31 | #include <stdint.h> | |
32 | #include <string.h> | |
33 | ||
34 | #include "libavutil/avstring.h" | |
35 | #include "libavutil/dict.h" | |
36 | #include "libavutil/common.h" | |
37 | #include "libavutil/intreadwrite.h" | |
38 | #include "libavutil/mathematics.h" | |
39 | #include "libavutil/opt.h" | |
40 | #include "libavutil/time.h" | |
41 | ||
42 | #include "avformat.h" | |
43 | #include "avio.h" | |
44 | #include "avio_internal.h" | |
45 | #include "internal.h" | |
46 | #include "riff.h" | |
47 | ||
48 | #define RF64_AUTO (-1) | |
49 | #define RF64_NEVER 0 | |
50 | #define RF64_ALWAYS 1 | |
51 | ||
52 | #define PEAK_BUFFER_SIZE 1024 | |
53 | ||
54 | typedef enum { | |
55 | PEAK_OFF = 0, | |
56 | PEAK_ON, | |
57 | PEAK_ONLY | |
58 | } PeakType; | |
59 | ||
60 | typedef enum { | |
61 | PEAK_FORMAT_UINT8 = 1, | |
62 | PEAK_FORMAT_UINT16 | |
63 | } PeakFormat; | |
64 | ||
65 | typedef struct WAVMuxContext { | |
66 | const AVClass *class; | |
67 | int64_t data; | |
68 | int64_t fact_pos; | |
69 | int64_t ds64; | |
70 | int64_t minpts; | |
71 | int64_t maxpts; | |
72 | int16_t *peak_maxpos, *peak_maxneg; | |
73 | uint32_t peak_num_frames; | |
74 | uint32_t peak_outbuf_size; | |
75 | uint32_t peak_outbuf_bytes; | |
76 | uint32_t peak_pos_pop; | |
77 | uint16_t peak_pop; | |
78 | uint8_t *peak_output; | |
79 | int last_duration; | |
80 | int write_bext; | |
81 | int write_peak; | |
82 | int rf64; | |
83 | int peak_block_size; | |
84 | PeakFormat peak_format; | |
85 | int peak_block_pos; | |
86 | int peak_ppv; | |
87 | int peak_bps; | |
88 | } WAVMuxContext; | |
89 | ||
90 | #if CONFIG_WAV_MUXER | |
91 | static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen) | |
92 | { | |
93 | AVDictionaryEntry *tag; | |
94 | int len = 0; | |
95 | ||
96 | if (tag = av_dict_get(s->metadata, key, NULL, 0)) { | |
97 | len = strlen(tag->value); | |
98 | len = FFMIN(len, maxlen); | |
99 | avio_write(s->pb, tag->value, len); | |
100 | } | |
101 | ||
102 | ffio_fill(s->pb, 0, maxlen - len); | |
103 | } | |
104 | ||
105 | static void bwf_write_bext_chunk(AVFormatContext *s) | |
106 | { | |
107 | AVDictionaryEntry *tmp_tag; | |
108 | uint64_t time_reference = 0; | |
109 | int64_t bext = ff_start_tag(s->pb, "bext"); | |
110 | ||
111 | bwf_write_bext_string(s, "description", 256); | |
112 | bwf_write_bext_string(s, "originator", 32); | |
113 | bwf_write_bext_string(s, "originator_reference", 32); | |
114 | bwf_write_bext_string(s, "origination_date", 10); | |
115 | bwf_write_bext_string(s, "origination_time", 8); | |
116 | ||
117 | if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0)) | |
118 | time_reference = strtoll(tmp_tag->value, NULL, 10); | |
119 | avio_wl64(s->pb, time_reference); | |
120 | avio_wl16(s->pb, 1); // set version to 1 | |
121 | ||
122 | if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) { | |
123 | unsigned char umidpart_str[17] = {0}; | |
124 | int i; | |
125 | uint64_t umidpart; | |
126 | int len = strlen(tmp_tag->value+2); | |
127 | ||
128 | for (i = 0; i < len/16; i++) { | |
129 | memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16); | |
130 | umidpart = strtoll(umidpart_str, NULL, 16); | |
131 | avio_wb64(s->pb, umidpart); | |
132 | } | |
133 | ffio_fill(s->pb, 0, 64 - i*8); | |
134 | } else | |
135 | ffio_fill(s->pb, 0, 64); // zero UMID | |
136 | ||
137 | ffio_fill(s->pb, 0, 190); // Reserved | |
138 | ||
139 | if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0)) | |
140 | avio_put_str(s->pb, tmp_tag->value); | |
141 | ||
142 | ff_end_tag(s->pb, bext); | |
143 | } | |
144 | ||
145 | static av_cold void peak_free_buffers(AVFormatContext *s) | |
146 | { | |
147 | WAVMuxContext *wav = s->priv_data; | |
148 | ||
149 | av_freep(&wav->peak_maxpos); | |
150 | av_freep(&wav->peak_maxneg); | |
151 | av_freep(&wav->peak_output); | |
152 | } | |
153 | ||
154 | static av_cold int peak_init_writer(AVFormatContext *s) | |
155 | { | |
156 | WAVMuxContext *wav = s->priv_data; | |
157 | AVCodecContext *enc = s->streams[0]->codec; | |
158 | ||
159 | if (enc->codec_id != AV_CODEC_ID_PCM_S8 && | |
160 | enc->codec_id != AV_CODEC_ID_PCM_S16LE && | |
161 | enc->codec_id != AV_CODEC_ID_PCM_U8 && | |
162 | enc->codec_id != AV_CODEC_ID_PCM_U16LE) { | |
163 | av_log(s, AV_LOG_ERROR, "%s codec not supported for Peak Chunk\n", | |
164 | s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); | |
165 | return -1; | |
166 | } | |
167 | ||
168 | wav->peak_bps = av_get_bits_per_sample(enc->codec_id) / 8; | |
169 | ||
170 | if (wav->peak_bps == 1 && wav->peak_format == PEAK_FORMAT_UINT16) { | |
171 | av_log(s, AV_LOG_ERROR, | |
172 | "Writing 16 bit peak for 8 bit audio does not make sense\n"); | |
173 | return AVERROR(EINVAL); | |
174 | } | |
175 | ||
176 | wav->peak_maxpos = av_mallocz_array(enc->channels, sizeof(*wav->peak_maxpos)); | |
177 | wav->peak_maxneg = av_mallocz_array(enc->channels, sizeof(*wav->peak_maxneg)); | |
178 | wav->peak_output = av_malloc(PEAK_BUFFER_SIZE); | |
179 | if (!wav->peak_maxpos || !wav->peak_maxneg || !wav->peak_output) | |
180 | goto nomem; | |
181 | ||
182 | wav->peak_outbuf_size = PEAK_BUFFER_SIZE; | |
183 | ||
184 | return 0; | |
185 | ||
186 | nomem: | |
187 | av_log(s, AV_LOG_ERROR, "Out of memory\n"); | |
188 | peak_free_buffers(s); | |
189 | return AVERROR(ENOMEM); | |
190 | } | |
191 | ||
192 | static void peak_write_frame(AVFormatContext *s) | |
193 | { | |
194 | WAVMuxContext *wav = s->priv_data; | |
195 | AVCodecContext *enc = s->streams[0]->codec; | |
196 | int peak_of_peaks; | |
197 | int c; | |
198 | ||
199 | if (!wav->peak_output) | |
200 | return; | |
201 | ||
202 | for (c = 0; c < enc->channels; c++) { | |
203 | wav->peak_maxneg[c] = -wav->peak_maxneg[c]; | |
204 | ||
205 | if (wav->peak_bps == 2 && wav->peak_format == PEAK_FORMAT_UINT8) { | |
206 | wav->peak_maxpos[c] = wav->peak_maxpos[c] / 256; | |
207 | wav->peak_maxneg[c] = wav->peak_maxneg[c] / 256; | |
208 | } | |
209 | ||
210 | if (wav->peak_ppv == 1) | |
211 | wav->peak_maxpos[c] = | |
212 | FFMAX(wav->peak_maxpos[c], wav->peak_maxneg[c]); | |
213 | ||
214 | peak_of_peaks = FFMAX3(wav->peak_maxpos[c], wav->peak_maxneg[c], | |
215 | wav->peak_pop); | |
216 | if (peak_of_peaks > wav->peak_pop) | |
217 | wav->peak_pos_pop = wav->peak_num_frames; | |
218 | wav->peak_pop = peak_of_peaks; | |
219 | ||
220 | if (wav->peak_outbuf_size - wav->peak_outbuf_bytes < | |
221 | wav->peak_format * wav->peak_ppv) { | |
222 | wav->peak_outbuf_size += PEAK_BUFFER_SIZE; | |
223 | wav->peak_output = av_realloc(wav->peak_output, | |
224 | wav->peak_outbuf_size); | |
225 | if (!wav->peak_output) { | |
226 | av_log(s, AV_LOG_ERROR, "No memory for peak data\n"); | |
227 | return; | |
228 | } | |
229 | } | |
230 | ||
231 | if (wav->peak_format == PEAK_FORMAT_UINT8) { | |
232 | wav->peak_output[wav->peak_outbuf_bytes++] = | |
233 | wav->peak_maxpos[c]; | |
234 | if (wav->peak_ppv == 2) { | |
235 | wav->peak_output[wav->peak_outbuf_bytes++] = | |
236 | wav->peak_maxneg[c]; | |
237 | } | |
238 | } else { | |
239 | AV_WL16(wav->peak_output + wav->peak_outbuf_bytes, | |
240 | wav->peak_maxpos[c]); | |
241 | wav->peak_outbuf_bytes += 2; | |
242 | if (wav->peak_ppv == 2) { | |
243 | AV_WL16(wav->peak_output + wav->peak_outbuf_bytes, | |
244 | wav->peak_maxneg[c]); | |
245 | wav->peak_outbuf_bytes += 2; | |
246 | } | |
247 | } | |
248 | wav->peak_maxpos[c] = 0; | |
249 | wav->peak_maxneg[c] = 0; | |
250 | } | |
251 | wav->peak_num_frames++; | |
252 | } | |
253 | ||
254 | static void peak_write_chunk(AVFormatContext *s) | |
255 | { | |
256 | WAVMuxContext *wav = s->priv_data; | |
257 | AVIOContext *pb = s->pb; | |
258 | AVCodecContext *enc = s->streams[0]->codec; | |
259 | int64_t peak = ff_start_tag(s->pb, "levl"); | |
260 | int64_t now0; | |
261 | time_t now_secs; | |
262 | char timestamp[28]; | |
263 | ||
264 | /* Peak frame of incomplete block at end */ | |
265 | if (wav->peak_block_pos) | |
266 | peak_write_frame(s); | |
267 | ||
268 | memset(timestamp, 0, sizeof(timestamp)); | |
269 | if (!(s->flags & AVFMT_FLAG_BITEXACT)) { | |
270 | av_log(s, AV_LOG_INFO, "Writing local time and date to Peak Envelope Chunk\n"); | |
271 | now0 = av_gettime(); | |
272 | now_secs = now0 / 1000000; | |
273 | strftime(timestamp, sizeof(timestamp), "%Y:%m:%d:%H:%M:%S:", localtime(&now_secs)); | |
274 | av_strlcatf(timestamp, sizeof(timestamp), "%03d", (int)((now0 / 1000) % 1000)); | |
275 | } | |
276 | ||
277 | avio_wl32(pb, 1); /* version */ | |
278 | avio_wl32(pb, wav->peak_format); /* 8 or 16 bit */ | |
279 | avio_wl32(pb, wav->peak_ppv); /* positive and negative */ | |
280 | avio_wl32(pb, wav->peak_block_size); /* frames per value */ | |
281 | avio_wl32(pb, enc->channels); /* number of channels */ | |
282 | avio_wl32(pb, wav->peak_num_frames); /* number of peak frames */ | |
283 | avio_wl32(pb, wav->peak_pos_pop); /* audio sample frame index */ | |
284 | avio_wl32(pb, 128); /* equal to size of header */ | |
285 | avio_write(pb, timestamp, 28); /* ASCII time stamp */ | |
286 | ffio_fill(pb, 0, 60); | |
287 | ||
288 | avio_write(pb, wav->peak_output, wav->peak_outbuf_bytes); | |
289 | ||
290 | ff_end_tag(pb, peak); | |
291 | ||
292 | if (!wav->data) | |
293 | wav->data = peak; | |
294 | } | |
295 | ||
296 | static int wav_write_header(AVFormatContext *s) | |
297 | { | |
298 | WAVMuxContext *wav = s->priv_data; | |
299 | AVIOContext *pb = s->pb; | |
300 | int64_t fmt; | |
301 | ||
302 | if (s->nb_streams != 1) { | |
303 | av_log(s, AV_LOG_ERROR, "WAVE files have exactly one stream\n"); | |
304 | return AVERROR(EINVAL); | |
305 | } | |
306 | ||
307 | if (wav->rf64 == RF64_ALWAYS) { | |
308 | ffio_wfourcc(pb, "RF64"); | |
309 | avio_wl32(pb, -1); /* RF64 chunk size: use size in ds64 */ | |
310 | } else { | |
311 | ffio_wfourcc(pb, "RIFF"); | |
312 | avio_wl32(pb, -1); /* file length */ | |
313 | } | |
314 | ||
315 | ffio_wfourcc(pb, "WAVE"); | |
316 | ||
317 | if (wav->rf64 != RF64_NEVER) { | |
318 | /* write empty ds64 chunk or JUNK chunk to reserve space for ds64 */ | |
319 | ffio_wfourcc(pb, wav->rf64 == RF64_ALWAYS ? "ds64" : "JUNK"); | |
320 | avio_wl32(pb, 28); /* chunk size */ | |
321 | wav->ds64 = avio_tell(pb); | |
322 | ffio_fill(pb, 0, 28); | |
323 | } | |
324 | ||
325 | if (wav->write_peak != 2) { | |
326 | /* format header */ | |
327 | fmt = ff_start_tag(pb, "fmt "); | |
328 | if (ff_put_wav_header(pb, s->streams[0]->codec, 0) < 0) { | |
329 | const AVCodecDescriptor *desc = avcodec_descriptor_get(s->streams[0]->codec->codec_id); | |
330 | av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n", | |
331 | desc ? desc->name : "unknown"); | |
332 | return AVERROR(ENOSYS); | |
333 | } | |
334 | ff_end_tag(pb, fmt); | |
335 | } | |
336 | ||
337 | if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ | |
338 | && s->pb->seekable) { | |
339 | wav->fact_pos = ff_start_tag(pb, "fact"); | |
340 | avio_wl32(pb, 0); | |
341 | ff_end_tag(pb, wav->fact_pos); | |
342 | } | |
343 | ||
344 | if (wav->write_bext) | |
345 | bwf_write_bext_chunk(s); | |
346 | ||
347 | if (wav->write_peak) { | |
348 | int ret; | |
349 | if ((ret = peak_init_writer(s)) < 0) | |
350 | return ret; | |
351 | } | |
352 | ||
353 | avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate); | |
354 | wav->maxpts = wav->last_duration = 0; | |
355 | wav->minpts = INT64_MAX; | |
356 | ||
357 | if (wav->write_peak != 2) { | |
358 | /* info header */ | |
359 | ff_riff_write_info(s); | |
360 | ||
361 | /* data header */ | |
362 | wav->data = ff_start_tag(pb, "data"); | |
363 | } | |
364 | ||
365 | avio_flush(pb); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | static int wav_write_packet(AVFormatContext *s, AVPacket *pkt) | |
371 | { | |
372 | AVIOContext *pb = s->pb; | |
373 | WAVMuxContext *wav = s->priv_data; | |
374 | ||
375 | if (wav->write_peak != 2) | |
376 | avio_write(pb, pkt->data, pkt->size); | |
377 | ||
378 | if (wav->write_peak) { | |
379 | int c = 0; | |
380 | int i; | |
381 | for (i = 0; i < pkt->size; i += wav->peak_bps) { | |
382 | if (wav->peak_bps == 1) { | |
383 | wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], *(int8_t*)(pkt->data + i)); | |
384 | wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], *(int8_t*)(pkt->data + i)); | |
385 | } else { | |
386 | wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], (int16_t)AV_RL16(pkt->data + i)); | |
387 | wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], (int16_t)AV_RL16(pkt->data + i)); | |
388 | } | |
389 | if (++c == s->streams[0]->codec->channels) { | |
390 | c = 0; | |
391 | if (++wav->peak_block_pos == wav->peak_block_size) { | |
392 | peak_write_frame(s); | |
393 | wav->peak_block_pos = 0; | |
394 | } | |
395 | } | |
396 | } | |
397 | } | |
398 | ||
399 | if(pkt->pts != AV_NOPTS_VALUE) { | |
400 | wav->minpts = FFMIN(wav->minpts, pkt->pts); | |
401 | wav->maxpts = FFMAX(wav->maxpts, pkt->pts); | |
402 | wav->last_duration = pkt->duration; | |
403 | } else | |
404 | av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n"); | |
405 | return 0; | |
406 | } | |
407 | ||
408 | static int wav_write_trailer(AVFormatContext *s) | |
409 | { | |
410 | AVIOContext *pb = s->pb; | |
411 | WAVMuxContext *wav = s->priv_data; | |
412 | int64_t file_size, data_size; | |
413 | int64_t number_of_samples = 0; | |
414 | int rf64 = 0; | |
415 | ||
416 | avio_flush(pb); | |
417 | ||
418 | if (s->pb->seekable) { | |
419 | if (wav->write_peak != 2) { | |
420 | ff_end_tag(pb, wav->data); | |
421 | avio_flush(pb); | |
422 | } | |
423 | ||
424 | if (wav->write_peak && wav->peak_output) { | |
425 | peak_write_chunk(s); | |
426 | avio_flush(pb); | |
427 | } | |
428 | ||
429 | /* update file size */ | |
430 | file_size = avio_tell(pb); | |
431 | data_size = file_size - wav->data; | |
432 | if (wav->rf64 == RF64_ALWAYS || (wav->rf64 == RF64_AUTO && file_size - 8 > UINT32_MAX)) { | |
433 | rf64 = 1; | |
434 | } else { | |
435 | avio_seek(pb, 4, SEEK_SET); | |
436 | avio_wl32(pb, (uint32_t)(file_size - 8)); | |
437 | avio_seek(pb, file_size, SEEK_SET); | |
438 | ||
439 | avio_flush(pb); | |
440 | } | |
441 | ||
442 | number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, | |
443 | s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, | |
444 | s->streams[0]->time_base.den); | |
445 | ||
446 | if(s->streams[0]->codec->codec_tag != 0x01) { | |
447 | /* Update num_samps in fact chunk */ | |
448 | avio_seek(pb, wav->fact_pos, SEEK_SET); | |
449 | if (rf64 || (wav->rf64 == RF64_AUTO && number_of_samples > UINT32_MAX)) { | |
450 | rf64 = 1; | |
451 | avio_wl32(pb, -1); | |
452 | } else { | |
453 | avio_wl32(pb, number_of_samples); | |
454 | avio_seek(pb, file_size, SEEK_SET); | |
455 | avio_flush(pb); | |
456 | } | |
457 | } | |
458 | ||
459 | if (rf64) { | |
460 | /* overwrite RIFF with RF64 */ | |
461 | avio_seek(pb, 0, SEEK_SET); | |
462 | ffio_wfourcc(pb, "RF64"); | |
463 | avio_wl32(pb, -1); | |
464 | ||
465 | /* write ds64 chunk (overwrite JUNK if rf64 == RF64_AUTO) */ | |
466 | avio_seek(pb, wav->ds64 - 8, SEEK_SET); | |
467 | ffio_wfourcc(pb, "ds64"); | |
468 | avio_wl32(pb, 28); /* ds64 chunk size */ | |
469 | avio_wl64(pb, file_size - 8); /* RF64 chunk size */ | |
470 | avio_wl64(pb, data_size); /* data chunk size */ | |
471 | avio_wl64(pb, number_of_samples); /* fact chunk number of samples */ | |
472 | avio_wl32(pb, 0); /* number of table entries for non-'data' chunks */ | |
473 | ||
474 | /* write -1 in data chunk size */ | |
475 | avio_seek(pb, wav->data - 4, SEEK_SET); | |
476 | avio_wl32(pb, -1); | |
477 | ||
478 | avio_seek(pb, file_size, SEEK_SET); | |
479 | avio_flush(pb); | |
480 | } | |
481 | } | |
482 | ||
483 | if (wav->write_peak) | |
484 | peak_free_buffers(s); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | #define OFFSET(x) offsetof(WAVMuxContext, x) | |
490 | #define ENC AV_OPT_FLAG_ENCODING_PARAM | |
491 | static const AVOption options[] = { | |
492 | { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, | |
493 | { "write_peak", "Write Peak Envelope chunk.", OFFSET(write_peak), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, ENC, "peak" }, | |
494 | { "off", "Do not write peak chunk.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_OFF }, 0, 0, ENC, "peak" }, | |
495 | { "on", "Append peak chunk after wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ON }, 0, 0, ENC, "peak" }, | |
496 | { "only", "Write only peak chunk, omit wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ONLY }, 0, 0, ENC, "peak" }, | |
497 | { "rf64", "Use RF64 header rather than RIFF for large files.", OFFSET(rf64), AV_OPT_TYPE_INT, { .i64 = RF64_NEVER },-1, 1, ENC, "rf64" }, | |
498 | { "auto", "Write RF64 header if file grows large enough.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_AUTO }, 0, 0, ENC, "rf64" }, | |
499 | { "always", "Always write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_ALWAYS }, 0, 0, ENC, "rf64" }, | |
500 | { "never", "Never write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_NEVER }, 0, 0, ENC, "rf64" }, | |
501 | { "peak_block_size", "Number of audio samples used to generate each peak frame.", OFFSET(peak_block_size), AV_OPT_TYPE_INT, { .i64 = 256 }, 0, 65536, ENC }, | |
502 | { "peak_format", "The format of the peak envelope data (1: uint8, 2: uint16).", OFFSET(peak_format), AV_OPT_TYPE_INT, { .i64 = PEAK_FORMAT_UINT16 }, PEAK_FORMAT_UINT8, PEAK_FORMAT_UINT16, ENC }, | |
503 | { "peak_ppv", "Number of peak points per peak value (1 or 2).", OFFSET(peak_ppv), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, 2, ENC }, | |
504 | { NULL }, | |
505 | }; | |
506 | ||
507 | static const AVClass wav_muxer_class = { | |
508 | .class_name = "WAV muxer", | |
509 | .item_name = av_default_item_name, | |
510 | .option = options, | |
511 | .version = LIBAVUTIL_VERSION_INT, | |
512 | }; | |
513 | ||
514 | AVOutputFormat ff_wav_muxer = { | |
515 | .name = "wav", | |
516 | .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"), | |
517 | .mime_type = "audio/x-wav", | |
518 | .extensions = "wav", | |
519 | .priv_data_size = sizeof(WAVMuxContext), | |
520 | .audio_codec = AV_CODEC_ID_PCM_S16LE, | |
521 | .video_codec = AV_CODEC_ID_NONE, | |
522 | .write_header = wav_write_header, | |
523 | .write_packet = wav_write_packet, | |
524 | .write_trailer = wav_write_trailer, | |
525 | .flags = AVFMT_TS_NONSTRICT, | |
526 | .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, | |
527 | .priv_class = &wav_muxer_class, | |
528 | }; | |
529 | #endif /* CONFIG_WAV_MUXER */ | |
530 | ||
531 | #if CONFIG_W64_MUXER | |
532 | #include "w64.h" | |
533 | ||
534 | static void start_guid(AVIOContext *pb, const uint8_t *guid, int64_t *pos) | |
535 | { | |
536 | *pos = avio_tell(pb); | |
537 | ||
538 | avio_write(pb, guid, 16); | |
539 | avio_wl64(pb, INT64_MAX); | |
540 | } | |
541 | ||
542 | static void end_guid(AVIOContext *pb, int64_t start) | |
543 | { | |
544 | int64_t end, pos = avio_tell(pb); | |
545 | ||
546 | end = FFALIGN(pos, 8); | |
547 | ffio_fill(pb, 0, end - pos); | |
548 | avio_seek(pb, start + 16, SEEK_SET); | |
549 | avio_wl64(pb, end - start); | |
550 | avio_seek(pb, end, SEEK_SET); | |
551 | } | |
552 | ||
553 | static int w64_write_header(AVFormatContext *s) | |
554 | { | |
555 | WAVMuxContext *wav = s->priv_data; | |
556 | AVIOContext *pb = s->pb; | |
557 | int64_t start; | |
558 | int ret; | |
559 | ||
560 | avio_write(pb, ff_w64_guid_riff, sizeof(ff_w64_guid_riff)); | |
561 | avio_wl64(pb, -1); | |
562 | avio_write(pb, ff_w64_guid_wave, sizeof(ff_w64_guid_wave)); | |
563 | start_guid(pb, ff_w64_guid_fmt, &start); | |
564 | if ((ret = ff_put_wav_header(pb, s->streams[0]->codec, 0)) < 0) { | |
565 | av_log(s, AV_LOG_ERROR, "%s codec not supported\n", | |
566 | s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); | |
567 | return ret; | |
568 | } | |
569 | end_guid(pb, start); | |
570 | ||
571 | if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ | |
572 | && s->pb->seekable) { | |
573 | start_guid(pb, ff_w64_guid_fact, &wav->fact_pos); | |
574 | avio_wl64(pb, 0); | |
575 | end_guid(pb, wav->fact_pos); | |
576 | } | |
577 | ||
578 | start_guid(pb, ff_w64_guid_data, &wav->data); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static int w64_write_trailer(AVFormatContext *s) | |
584 | { | |
585 | AVIOContext *pb = s->pb; | |
586 | WAVMuxContext *wav = s->priv_data; | |
587 | int64_t file_size; | |
588 | ||
589 | if (pb->seekable) { | |
590 | end_guid(pb, wav->data); | |
591 | ||
592 | file_size = avio_tell(pb); | |
593 | avio_seek(pb, 16, SEEK_SET); | |
594 | avio_wl64(pb, file_size); | |
595 | ||
596 | if (s->streams[0]->codec->codec_tag != 0x01) { | |
597 | int64_t number_of_samples; | |
598 | ||
599 | number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, | |
600 | s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, | |
601 | s->streams[0]->time_base.den); | |
602 | avio_seek(pb, wav->fact_pos + 24, SEEK_SET); | |
603 | avio_wl64(pb, number_of_samples); | |
604 | } | |
605 | ||
606 | avio_seek(pb, file_size, SEEK_SET); | |
607 | avio_flush(pb); | |
608 | } | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
613 | AVOutputFormat ff_w64_muxer = { | |
614 | .name = "w64", | |
615 | .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), | |
616 | .extensions = "w64", | |
617 | .priv_data_size = sizeof(WAVMuxContext), | |
618 | .audio_codec = AV_CODEC_ID_PCM_S16LE, | |
619 | .video_codec = AV_CODEC_ID_NONE, | |
620 | .write_header = w64_write_header, | |
621 | .write_packet = wav_write_packet, | |
622 | .write_trailer = w64_write_trailer, | |
623 | .flags = AVFMT_TS_NONSTRICT, | |
624 | .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, | |
625 | }; | |
626 | #endif /* CONFIG_W64_MUXER */ |