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hdsenc.c
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1 /*
2  * Live HDS fragmenter
3  * Copyright (c) 2013 Martin Storsjo
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 #include "config.h"
23 #include <float.h>
24 #if HAVE_UNISTD_H
25 #include <unistd.h>
26 #endif
27 
28 #include "avformat.h"
29 #include "avio_internal.h"
30 #include "internal.h"
31 #include "os_support.h"
32 
33 #include "libavutil/avstring.h"
34 #include "libavutil/base64.h"
35 #include "libavutil/intreadwrite.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/opt.h"
38 
39 typedef struct Fragment {
40  char file[1024];
41  int64_t start_time, duration;
42  int n;
43 } Fragment;
44 
45 typedef struct OutputStream {
46  int bitrate;
49  int ctx_inited;
50  uint8_t iobuf[32768];
51  char temp_filename[1024];
54  int packets_written;
57 
59 
62 
66 } OutputStream;
67 
68 typedef struct HDSContext {
69  const AVClass *class; /* Class for private options. */
74 
77 } HDSContext;
78 
79 static int parse_header(OutputStream *os, const uint8_t *buf, int buf_size)
80 {
81  if (buf_size < 13)
82  return AVERROR_INVALIDDATA;
83  if (memcmp(buf, "FLV", 3))
84  return AVERROR_INVALIDDATA;
85  buf += 13;
86  buf_size -= 13;
87  while (buf_size >= 11 + 4) {
88  int type = buf[0];
89  int size = AV_RB24(&buf[1]) + 11 + 4;
90  if (size > buf_size)
91  return AVERROR_INVALIDDATA;
92  if (type == 8 || type == 9) {
94  return AVERROR_INVALIDDATA;
96  os->extra_packets[os->nb_extra_packets] = av_malloc(size);
97  if (!os->extra_packets[os->nb_extra_packets])
98  return AVERROR(ENOMEM);
99  memcpy(os->extra_packets[os->nb_extra_packets], buf, size);
100  os->nb_extra_packets++;
101  } else if (type == 0x12) {
102  if (os->metadata)
103  return AVERROR_INVALIDDATA;
104  os->metadata_size = size - 11 - 4;
105  os->metadata = av_malloc(os->metadata_size);
106  if (!os->metadata)
107  return AVERROR(ENOMEM);
108  memcpy(os->metadata, buf + 11, os->metadata_size);
109  }
110  buf += size;
111  buf_size -= size;
112  }
113  if (!os->metadata)
114  return AVERROR_INVALIDDATA;
115  return 0;
116 }
117 
118 static int hds_write(void *opaque, uint8_t *buf, int buf_size)
119 {
120  OutputStream *os = opaque;
121  if (os->out) {
122  avio_write(os->out, buf, buf_size);
123  } else {
124  if (!os->metadata_size) {
125  int ret;
126  // Assuming the IO buffer is large enough to fit the
127  // FLV header and all metadata and extradata packets
128  if ((ret = parse_header(os, buf, buf_size)) < 0)
129  return ret;
130  }
131  }
132  return buf_size;
133 }
134 
136 {
137  HDSContext *c = s->priv_data;
138  int i, j;
139  if (!c->streams)
140  return;
141  for (i = 0; i < s->nb_streams; i++) {
142  OutputStream *os = &c->streams[i];
143  if (os->out)
144  ff_format_io_close(s, &os->out);
145  if (os->ctx && os->ctx_inited)
146  av_write_trailer(os->ctx);
147  if (os->ctx)
148  av_freep(&os->ctx->pb);
149  if (os->ctx)
151  av_freep(&os->metadata);
152  for (j = 0; j < os->nb_extra_packets; j++)
153  av_freep(&os->extra_packets[j]);
154  for (j = 0; j < os->nb_fragments; j++)
155  av_freep(&os->fragments[j]);
156  av_freep(&os->fragments);
157  }
158  av_freep(&c->streams);
159 }
160 
161 static int write_manifest(AVFormatContext *s, int final)
162 {
163  HDSContext *c = s->priv_data;
164  AVIOContext *out;
165  char filename[1024], temp_filename[1024];
166  int ret, i;
167  double duration = 0;
168 
169  if (c->nb_streams > 0)
170  duration = c->streams[0].last_ts * av_q2d(s->streams[0]->time_base);
171 
172  snprintf(filename, sizeof(filename), "%s/index.f4m", s->filename);
173  snprintf(temp_filename, sizeof(temp_filename), "%s/index.f4m.tmp", s->filename);
174  ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, NULL);
175  if (ret < 0) {
176  av_log(s, AV_LOG_ERROR, "Unable to open %s for writing\n", temp_filename);
177  return ret;
178  }
179  avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
180  avio_printf(out, "<manifest xmlns=\"http://ns.adobe.com/f4m/1.0\">\n");
181  avio_printf(out, "\t<id>%s</id>\n", av_basename(s->filename));
182  avio_printf(out, "\t<streamType>%s</streamType>\n",
183  final ? "recorded" : "live");
184  avio_printf(out, "\t<deliveryType>streaming</deliveryType>\n");
185  if (final)
186  avio_printf(out, "\t<duration>%f</duration>\n", duration);
187  for (i = 0; i < c->nb_streams; i++) {
188  OutputStream *os = &c->streams[i];
189  int b64_size = AV_BASE64_SIZE(os->metadata_size);
190  char *base64 = av_malloc(b64_size);
191  if (!base64) {
192  ff_format_io_close(s, &out);
193  return AVERROR(ENOMEM);
194  }
195  av_base64_encode(base64, b64_size, os->metadata, os->metadata_size);
196 
197  avio_printf(out, "\t<bootstrapInfo profile=\"named\" url=\"stream%d.abst\" id=\"bootstrap%d\" />\n", i, i);
198  avio_printf(out, "\t<media bitrate=\"%d\" url=\"stream%d\" bootstrapInfoId=\"bootstrap%d\">\n", os->bitrate/1000, i, i);
199  avio_printf(out, "\t\t<metadata>%s</metadata>\n", base64);
200  avio_printf(out, "\t</media>\n");
201  av_free(base64);
202  }
203  avio_printf(out, "</manifest>\n");
204  avio_flush(out);
205  ff_format_io_close(s, &out);
206  return ff_rename(temp_filename, filename, s);
207 }
208 
209 static void update_size(AVIOContext *out, int64_t pos)
210 {
211  int64_t end = avio_tell(out);
212  avio_seek(out, pos, SEEK_SET);
213  avio_wb32(out, end - pos);
214  avio_seek(out, end, SEEK_SET);
215 }
216 
217 /* Note, the .abst files need to be served with the "binary/octet"
218  * mime type, otherwise at least the OSMF player can easily fail
219  * with "stream not found" when polling for the next fragment. */
220 static int write_abst(AVFormatContext *s, OutputStream *os, int final)
221 {
222  HDSContext *c = s->priv_data;
223  AVIOContext *out;
224  char filename[1024], temp_filename[1024];
225  int i, ret;
226  int64_t asrt_pos, afrt_pos;
227  int start = 0, fragments;
228  int index = s->streams[os->first_stream]->id;
229  int64_t cur_media_time = 0;
230  if (c->window_size)
231  start = FFMAX(os->nb_fragments - c->window_size, 0);
232  fragments = os->nb_fragments - start;
233  if (final)
234  cur_media_time = os->last_ts;
235  else if (os->nb_fragments)
236  cur_media_time = os->fragments[os->nb_fragments - 1]->start_time;
237 
238  snprintf(filename, sizeof(filename),
239  "%s/stream%d.abst", s->filename, index);
240  snprintf(temp_filename, sizeof(temp_filename),
241  "%s/stream%d.abst.tmp", s->filename, index);
242  ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, NULL);
243  if (ret < 0) {
244  av_log(s, AV_LOG_ERROR, "Unable to open %s for writing\n", temp_filename);
245  return ret;
246  }
247  avio_wb32(out, 0); // abst size
248  avio_wl32(out, MKTAG('a','b','s','t'));
249  avio_wb32(out, 0); // version + flags
250  avio_wb32(out, os->fragment_index - 1); // BootstrapinfoVersion
251  avio_w8(out, final ? 0 : 0x20); // profile, live, update
252  avio_wb32(out, 1000); // timescale
253  avio_wb64(out, cur_media_time);
254  avio_wb64(out, 0); // SmpteTimeCodeOffset
255  avio_w8(out, 0); // MovieIdentifer (null string)
256  avio_w8(out, 0); // ServerEntryCount
257  avio_w8(out, 0); // QualityEntryCount
258  avio_w8(out, 0); // DrmData (null string)
259  avio_w8(out, 0); // MetaData (null string)
260  avio_w8(out, 1); // SegmentRunTableCount
261  asrt_pos = avio_tell(out);
262  avio_wb32(out, 0); // asrt size
263  avio_wl32(out, MKTAG('a','s','r','t'));
264  avio_wb32(out, 0); // version + flags
265  avio_w8(out, 0); // QualityEntryCount
266  avio_wb32(out, 1); // SegmentRunEntryCount
267  avio_wb32(out, 1); // FirstSegment
268  avio_wb32(out, final ? (os->fragment_index - 1) : 0xffffffff); // FragmentsPerSegment
269  update_size(out, asrt_pos);
270  avio_w8(out, 1); // FragmentRunTableCount
271  afrt_pos = avio_tell(out);
272  avio_wb32(out, 0); // afrt size
273  avio_wl32(out, MKTAG('a','f','r','t'));
274  avio_wb32(out, 0); // version + flags
275  avio_wb32(out, 1000); // timescale
276  avio_w8(out, 0); // QualityEntryCount
277  avio_wb32(out, fragments); // FragmentRunEntryCount
278  for (i = start; i < os->nb_fragments; i++) {
279  avio_wb32(out, os->fragments[i]->n);
280  avio_wb64(out, os->fragments[i]->start_time);
281  avio_wb32(out, os->fragments[i]->duration);
282  }
283  update_size(out, afrt_pos);
284  update_size(out, 0);
285  ff_format_io_close(s, &out);
286  return ff_rename(temp_filename, filename, s);
287 }
288 
289 static int init_file(AVFormatContext *s, OutputStream *os, int64_t start_ts)
290 {
291  int ret, i;
292  ret = s->io_open(s, &os->out, os->temp_filename, AVIO_FLAG_WRITE, NULL);
293  if (ret < 0)
294  return ret;
295  avio_wb32(os->out, 0);
296  avio_wl32(os->out, MKTAG('m','d','a','t'));
297  for (i = 0; i < os->nb_extra_packets; i++) {
298  AV_WB24(os->extra_packets[i] + 4, start_ts);
299  os->extra_packets[i][7] = (start_ts >> 24) & 0x7f;
300  avio_write(os->out, os->extra_packets[i], os->extra_packet_sizes[i]);
301  }
302  return 0;
303 }
304 
306 {
307  int64_t pos = avio_tell(os->out);
308  avio_seek(os->out, 0, SEEK_SET);
309  avio_wb32(os->out, pos);
310  avio_flush(os->out);
311  ff_format_io_close(s, &os->out);
312 }
313 
315 {
316  HDSContext *c = s->priv_data;
317  int ret = 0, i;
318  AVOutputFormat *oformat;
319 
320  if (mkdir(s->filename, 0777) == -1 && errno != EEXIST) {
321  ret = AVERROR(errno);
322  av_log(s, AV_LOG_ERROR , "Failed to create directory %s\n", s->filename);
323  goto fail;
324  }
325 
326  oformat = av_guess_format("flv", NULL, NULL);
327  if (!oformat) {
329  goto fail;
330  }
331 
332  c->streams = av_mallocz_array(s->nb_streams, sizeof(*c->streams));
333  if (!c->streams) {
334  ret = AVERROR(ENOMEM);
335  goto fail;
336  }
337 
338  for (i = 0; i < s->nb_streams; i++) {
339  OutputStream *os = &c->streams[c->nb_streams];
341  AVStream *st = s->streams[i];
342 
343  if (!st->codecpar->bit_rate) {
344  av_log(s, AV_LOG_ERROR, "No bit rate set for stream %d\n", i);
345  ret = AVERROR(EINVAL);
346  goto fail;
347  }
348  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
349  if (os->has_video) {
350  c->nb_streams++;
351  os++;
352  }
353  os->has_video = 1;
354  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
355  if (os->has_audio) {
356  c->nb_streams++;
357  os++;
358  }
359  os->has_audio = 1;
360  } else {
361  av_log(s, AV_LOG_ERROR, "Unsupported stream type in stream %d\n", i);
362  ret = AVERROR(EINVAL);
363  goto fail;
364  }
365  os->bitrate += s->streams[i]->codecpar->bit_rate;
366 
367  if (!os->ctx) {
368  os->first_stream = i;
369  ctx = avformat_alloc_context();
370  if (!ctx) {
371  ret = AVERROR(ENOMEM);
372  goto fail;
373  }
374  os->ctx = ctx;
375  ctx->oformat = oformat;
377  ctx->flags = s->flags;
378 
379  ctx->pb = avio_alloc_context(os->iobuf, sizeof(os->iobuf),
380  AVIO_FLAG_WRITE, os,
381  NULL, hds_write, NULL);
382  if (!ctx->pb) {
383  ret = AVERROR(ENOMEM);
384  goto fail;
385  }
386  } else {
387  ctx = os->ctx;
388  }
389  s->streams[i]->id = c->nb_streams;
390 
391  if (!(st = avformat_new_stream(ctx, NULL))) {
392  ret = AVERROR(ENOMEM);
393  goto fail;
394  }
396  st->codecpar->codec_tag = 0;
398  st->time_base = s->streams[i]->time_base;
399  }
400  if (c->streams[c->nb_streams].ctx)
401  c->nb_streams++;
402 
403  for (i = 0; i < c->nb_streams; i++) {
404  OutputStream *os = &c->streams[i];
405  int j;
406  if ((ret = avformat_write_header(os->ctx, NULL)) < 0) {
407  goto fail;
408  }
409  os->ctx_inited = 1;
410  avio_flush(os->ctx->pb);
411  for (j = 0; j < os->ctx->nb_streams; j++)
412  s->streams[os->first_stream + j]->time_base = os->ctx->streams[j]->time_base;
413 
414  snprintf(os->temp_filename, sizeof(os->temp_filename),
415  "%s/stream%d_temp", s->filename, i);
416  ret = init_file(s, os, 0);
417  if (ret < 0)
418  goto fail;
419 
420  if (!os->has_video && c->min_frag_duration <= 0) {
422  "No video stream in output stream %d and no min frag duration set\n", i);
423  ret = AVERROR(EINVAL);
424  }
425  os->fragment_index = 1;
426  write_abst(s, os, 0);
427  }
428  ret = write_manifest(s, 0);
429 
430 fail:
431  if (ret)
432  hds_free(s);
433  return ret;
434 }
435 
436 static int add_fragment(OutputStream *os, const char *file,
437  int64_t start_time, int64_t duration)
438 {
439  Fragment *frag;
440  if (duration == 0)
441  duration = 1;
442  if (os->nb_fragments >= os->fragments_size) {
443  int ret;
444  os->fragments_size = (os->fragments_size + 1) * 2;
445  if ((ret = av_reallocp_array(&os->fragments, os->fragments_size,
446  sizeof(*os->fragments))) < 0) {
447  os->fragments_size = 0;
448  os->nb_fragments = 0;
449  return ret;
450  }
451  }
452  frag = av_mallocz(sizeof(*frag));
453  if (!frag)
454  return AVERROR(ENOMEM);
455  av_strlcpy(frag->file, file, sizeof(frag->file));
456  frag->start_time = start_time;
457  frag->duration = duration;
458  frag->n = os->fragment_index;
459  os->fragments[os->nb_fragments++] = frag;
460  os->fragment_index++;
461  return 0;
462 }
463 
464 static int hds_flush(AVFormatContext *s, OutputStream *os, int final,
465  int64_t end_ts)
466 {
467  HDSContext *c = s->priv_data;
468  int i, ret = 0;
469  char target_filename[1024];
470  int index = s->streams[os->first_stream]->id;
471 
472  if (!os->packets_written)
473  return 0;
474 
475  avio_flush(os->ctx->pb);
476  os->packets_written = 0;
477  close_file(s, os);
478 
479  snprintf(target_filename, sizeof(target_filename),
480  "%s/stream%dSeg1-Frag%d", s->filename, index, os->fragment_index);
481  ret = ff_rename(os->temp_filename, target_filename, s);
482  if (ret < 0)
483  return ret;
484  add_fragment(os, target_filename, os->frag_start_ts, end_ts - os->frag_start_ts);
485 
486  if (!final) {
487  ret = init_file(s, os, end_ts);
488  if (ret < 0)
489  return ret;
490  }
491 
492  if (c->window_size || (final && c->remove_at_exit)) {
493  int remove = os->nb_fragments - c->window_size - c->extra_window_size;
494  if (final && c->remove_at_exit)
495  remove = os->nb_fragments;
496  if (remove > 0) {
497  for (i = 0; i < remove; i++) {
498  unlink(os->fragments[i]->file);
499  av_freep(&os->fragments[i]);
500  }
501  os->nb_fragments -= remove;
502  memmove(os->fragments, os->fragments + remove,
503  os->nb_fragments * sizeof(*os->fragments));
504  }
505  }
506 
507  if (ret >= 0)
508  ret = write_abst(s, os, final);
509  return ret;
510 }
511 
513 {
514  HDSContext *c = s->priv_data;
515  AVStream *st = s->streams[pkt->stream_index];
516  OutputStream *os = &c->streams[s->streams[pkt->stream_index]->id];
517  int64_t end_dts = os->fragment_index * (int64_t)c->min_frag_duration;
518  int ret;
519 
520  if (st->first_dts == AV_NOPTS_VALUE)
521  st->first_dts = pkt->dts;
522 
523  if ((!os->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
524  av_compare_ts(pkt->dts - st->first_dts, st->time_base,
525  end_dts, AV_TIME_BASE_Q) >= 0 &&
526  pkt->flags & AV_PKT_FLAG_KEY && os->packets_written) {
527 
528  if ((ret = hds_flush(s, os, 0, pkt->dts)) < 0)
529  return ret;
530  }
531 
532  // Note, these fragment start timestamps, that represent a whole
533  // OutputStream, assume all streams in it have the same time base.
534  if (!os->packets_written)
535  os->frag_start_ts = pkt->dts;
536  os->last_ts = pkt->dts;
537 
538  os->packets_written++;
539  return ff_write_chained(os->ctx, pkt->stream_index - os->first_stream, pkt, s, 0);
540 }
541 
543 {
544  HDSContext *c = s->priv_data;
545  int i;
546 
547  for (i = 0; i < c->nb_streams; i++)
548  hds_flush(s, &c->streams[i], 1, c->streams[i].last_ts);
549  write_manifest(s, 1);
550 
551  if (c->remove_at_exit) {
552  char filename[1024];
553  snprintf(filename, sizeof(filename), "%s/index.f4m", s->filename);
554  unlink(filename);
555  for (i = 0; i < c->nb_streams; i++) {
556  snprintf(filename, sizeof(filename), "%s/stream%d.abst", s->filename, i);
557  unlink(filename);
558  }
559  rmdir(s->filename);
560  }
561 
562  hds_free(s);
563  return 0;
564 }
565 
566 #define OFFSET(x) offsetof(HDSContext, x)
567 #define E AV_OPT_FLAG_ENCODING_PARAM
568 static const AVOption options[] = {
569  { "window_size", "number of fragments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
570  { "extra_window_size", "number of fragments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
571  { "min_frag_duration", "minimum fragment duration (in microseconds)", OFFSET(min_frag_duration), AV_OPT_TYPE_INT64, { .i64 = 10000000 }, 0, INT_MAX, E },
572  { "remove_at_exit", "remove all fragments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
573  { NULL },
574 };
575 
576 static const AVClass hds_class = {
577  .class_name = "HDS muxer",
578  .item_name = av_default_item_name,
579  .option = options,
580  .version = LIBAVUTIL_VERSION_INT,
581 };
582 
584  .name = "hds",
585  .long_name = NULL_IF_CONFIG_SMALL("HDS Muxer"),
586  .priv_data_size = sizeof(HDSContext),
587  .audio_codec = AV_CODEC_ID_AAC,
588  .video_codec = AV_CODEC_ID_H264,
593  .priv_class = &hds_class,
594 };
int nb_fragments
Definition: hdsenc.c:55
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:440
int64_t first_dts
Timestamp corresponding to the last dts sync point.
Definition: avformat.h:1058
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:631
Bytestream IO Context.
Definition: avio.h:147
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
uint8_t * metadata
Definition: hdsenc.c:60
static void hds_free(AVFormatContext *s)
Definition: hdsenc.c:135
int64_t start_time
Definition: hdsenc.c:41
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
Definition: avformat.h:1577
AVOption.
Definition: opt.h:245
static int hds_write_header(AVFormatContext *s)
Definition: hdsenc.c:314
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
int n
Definition: hdsenc.c:42
int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt, AVFormatContext *src, int interleave)
Write a packet to another muxer than the one the user originally intended.
Definition: mux.c:1251
int has_audio
Definition: hdsenc.c:58
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:943
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:230
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:607
int64_t last_ts
Definition: hdsenc.c:52
int first_stream
Definition: hdsenc.c:47
AVFormatContext * ctx
Definition: dashenc.c:63
uint8_t * extra_packets[2]
Definition: hdsenc.c:63
static AVPacket pkt
AVOutputFormat ff_hds_muxer
Definition: hdsenc.c:583
uint64_t packets_written
Definition: ffmpeg.h:480
static int write_manifest(AVFormatContext *s, int final)
Definition: hdsenc.c:161
int64_t frag_start_ts
Definition: hdsenc.c:52
int nb_streams
Definition: hdsenc.c:76
Format I/O context.
Definition: avformat.h:1325
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
static int64_t start_time
Definition: ffplay.c:330
const char * av_basename(const char *path)
Thread safe basename.
Definition: avstring.c:234
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:346
uint8_t
#define av_malloc(s)
int fragment_index
Definition: hdsenc.c:55
AVOptions.
miscellaneous OS support macros and functions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int id
Format-specific stream ID.
Definition: avformat.h:883
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5106
int ctx_inited
Definition: dashenc.c:64
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4065
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1393
int64_t duration
Definition: movenc.c:63
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:132
char temp_filename[1024]
Definition: hdsenc.c:51
uint8_t iobuf[32768]
Definition: dashenc.c:65
int extra_packet_sizes[2]
Definition: hdsenc.c:64
static double av_q2d(AVRational a)
Convert rational to double.
Definition: rational.h:80
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1436
static const AVClass hds_class
Definition: hdsenc.c:576
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:204
#define av_log(a,...)
struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1344
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3951
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1612
AVIOContext * avio_alloc_context(unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Allocate and initialize an AVIOContext for buffered I/O.
Definition: aviobuf.c:126
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:215
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:4059
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
static int hds_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: hdsenc.c:512
int metadata_size
Definition: hdsenc.c:61
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3918
char * av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size)
Encode data to base64 and null-terminate.
Definition: base64.c:138
#define FFMAX(a, b)
Definition: common.h:94
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:81
int extra_window_size
Definition: hdsenc.c:71
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1586
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare 2 timestamps each in its own timebases.
Definition: mathematics.c:147
static int hds_write_trailer(AVFormatContext *s)
Definition: hdsenc.c:542
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1381
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:224
char filename[1024]
input or output filename
Definition: avformat.h:1401
#define AV_BASE64_SIZE(x)
Calculate the output size needed to base64-encode x bytes to a null-terminated string.
Definition: base64.h:66
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
Definition: mux.c:496
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:483
#define E
Definition: hdsenc.c:567
const char * name
Definition: avformat.h:522
AVFormatContext * ctx
Definition: movenc.c:48
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
static void update_size(AVIOContext *out, int64_t pos)
Definition: hdsenc.c:209
AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
Definition: format.c:98
static int init_file(AVFormatContext *s, OutputStream *os, int64_t start_ts)
Definition: hdsenc.c:289
static int hds_flush(AVFormatContext *s, OutputStream *os, int final, int64_t end_ts)
Definition: hdsenc.c:464
#define FF_ARRAY_ELEMS(a)
Stream structure.
Definition: avformat.h:876
int fragments_size
Definition: hdsenc.c:55
static int write_abst(AVFormatContext *s, OutputStream *os, int final)
Definition: hdsenc.c:220
Fragment ** fragments
Definition: hdsenc.c:56
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:87
int min_frag_duration
Definition: hdsenc.c:72
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:252
AVIOContext * pb
I/O context.
Definition: avformat.h:1367
int window_size
Definition: hdsenc.c:70
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:182
int64_t duration
Definition: hdsenc.c:41
#define OFFSET(x)
Definition: hdsenc.c:566
void * buf
Definition: avisynth_c.h:553
GLint GLenum type
Definition: opengl_enc.c:105
int bitrate
Definition: hdsenc.c:46
static int ff_rename(const char *oldpath, const char *newpath, void *logctx)
Wrap errno on rename() error.
Definition: internal.h:500
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
static int hds_write(void *opaque, uint8_t *buf, int buf_size)
Definition: hdsenc.c:118
#define snprintf
Definition: snprintf.h:34
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4001
static int flags
Definition: cpu.c:47
static int add_fragment(OutputStream *os, const char *file, int64_t start_time, int64_t duration)
Definition: hdsenc.c:436
int remove_at_exit
Definition: hdsenc.c:73
Main libavformat public API header.
OutputStream * streams
Definition: hdsenc.c:75
if(ret< 0)
Definition: vf_mcdeint.c:282
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:476
static double c[64]
static int parse_header(OutputStream *os, const uint8_t *buf, int buf_size)
Definition: hdsenc.c:79
#define av_free(p)
void * priv_data
Format private data.
Definition: avformat.h:1353
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:498
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1579
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
int av_write_trailer(AVFormatContext *s)
Write the stream trailer to an output media file and free the file private data.
Definition: mux.c:1184
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:354
FILE * out
Definition: movenc.c:54
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:553
static void close_file(AVFormatContext *s, OutputStream *os)
Definition: hdsenc.c:305
#define AVERROR_MUXER_NOT_FOUND
Muxer not found.
Definition: error.h:60
AVCodecParameters * codecpar
Definition: avformat.h:1006
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3926
AVIOContext * out
Definition: dashenc.c:66
int stream_index
Definition: avcodec.h:1582
static const AVOption options[]
Definition: hdsenc.c:568
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:913
#define MKTAG(a, b, c, d)
Definition: common.h:342
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1883
int nb_extra_packets
Definition: hdsenc.c:65
This structure stores compressed data.
Definition: avcodec.h:1557
int has_video
Definition: hdsenc.c:58
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: v4l2enc.c:86
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
char file[1024]
Definition: hdsenc.c:40
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2