FFmpeg
flacenc.c
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1 /*
2  * raw FLAC muxer
3  * Copyright (c) 2006-2009 Justin Ruggles
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 "libavutil/avstring.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavcodec/flac.h"
28 #include "avformat.h"
29 #include "avio_internal.h"
30 #include "flacenc.h"
31 #include "id3v2.h"
32 #include "internal.h"
33 #include "vorbiscomment.h"
34 
35 
36 typedef struct FlacMuxerContext {
37  const AVClass *class;
39 
42  /* audio packets are queued here until we get all the attached pictures */
44 
45  /* updated streaminfo sent by the encoder at the end */
48 
49  unsigned attached_types;
51 
52 static int flac_write_block_padding(AVIOContext *pb, unsigned int n_padding_bytes,
53  int last_block)
54 {
55  avio_w8(pb, last_block ? 0x81 : 0x01);
56  avio_wb24(pb, n_padding_bytes);
57  ffio_fill(pb, 0, n_padding_bytes);
58  return 0;
59 }
60 
62  int last_block, int bitexact)
63 {
64  const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
65  int64_t len;
66 
68 
69  len = ff_vorbiscomment_length(*m, vendor, NULL, 0);
70  if (len >= ((1<<24) - 4))
71  return AVERROR(EINVAL);
72 
73  avio_w8(pb, last_block ? 0x84 : 0x04);
74  avio_wb24(pb, len);
75  ff_vorbiscomment_write(pb, *m, vendor, NULL, 0);
76 
77  return 0;
78 }
79 
81 {
82  FlacMuxerContext *c = s->priv_data;
83  AVIOContext *pb = s->pb;
84  const AVPixFmtDescriptor *pixdesc;
85  const CodecMime *mime = ff_id3v2_mime_tags;
87  const char *mimetype = NULL, *desc = "";
88  const AVStream *st = s->streams[pkt->stream_index];
89  int i, mimelen, desclen, type = 0, blocklen;
90 
91  if (!pkt->data)
92  return 0;
93 
94  while (mime->id != AV_CODEC_ID_NONE) {
95  if (mime->id == st->codecpar->codec_id) {
96  mimetype = mime->str;
97  break;
98  }
99  mime++;
100  }
101  if (!mimetype) {
102  av_log(s, AV_LOG_ERROR, "No mimetype is known for stream %d, cannot "
103  "write an attached picture.\n", st->index);
104  return AVERROR(EINVAL);
105  }
106  mimelen = strlen(mimetype);
107 
108  /* get the picture type */
109  e = av_dict_get(st->metadata, "comment", NULL, 0);
110  for (i = 0; e && i < FF_ARRAY_ELEMS(ff_id3v2_picture_types); i++) {
112  type = i;
113  break;
114  }
115  }
116 
117  if ((c->attached_types & (1 << type)) & 0x6) {
118  av_log(s, AV_LOG_ERROR, "Duplicate attachment for type '%s'\n", ff_id3v2_picture_types[type]);
119  return AVERROR(EINVAL);
120  }
121 
122  if (type == 1 && (st->codecpar->codec_id != AV_CODEC_ID_PNG ||
123  st->codecpar->width != 32 ||
124  st->codecpar->height != 32)) {
125  av_log(s, AV_LOG_ERROR, "File icon attachment must be a 32x32 PNG");
126  return AVERROR(EINVAL);
127  }
128 
129  c->attached_types |= (1 << type);
130 
131  /* get the description */
132  if ((e = av_dict_get(st->metadata, "title", NULL, 0)))
133  desc = e->value;
134  desclen = strlen(desc);
135 
136  blocklen = 4 + 4 + mimelen + 4 + desclen + 4 + 4 + 4 + 4 + 4 + pkt->size;
137  if (blocklen >= 1<<24) {
138  av_log(s, AV_LOG_ERROR, "Picture block too big %d >= %d\n", blocklen, 1<<24);
139  return AVERROR(EINVAL);
140  }
141 
142  avio_w8(pb, 0x06);
143  avio_wb24(pb, blocklen);
144 
145  avio_wb32(pb, type);
146 
147  avio_wb32(pb, mimelen);
148  avio_write(pb, mimetype, mimelen);
149 
150  avio_wb32(pb, desclen);
151  avio_write(pb, desc, desclen);
152 
153  avio_wb32(pb, st->codecpar->width);
154  avio_wb32(pb, st->codecpar->height);
155  if ((pixdesc = av_pix_fmt_desc_get(st->codecpar->format)))
156  avio_wb32(pb, av_get_bits_per_pixel(pixdesc));
157  else
158  avio_wb32(pb, 0);
159  avio_wb32(pb, 0);
160 
161  avio_wb32(pb, pkt->size);
162  avio_write(pb, pkt->data, pkt->size);
163  return 0;
164 }
165 
167 {
168  int i, ret, padding = s->metadata_header_padding;
169  if (padding < 0)
170  padding = 8192;
171  /* The FLAC specification states that 24 bits are used to represent the
172  * size of a metadata block so we must clip this value to 2^24-1. */
173  padding = av_clip_uintp2(padding, 24);
174 
175  for (i = 0; i < s->nb_streams; i++) {
176  AVStream *st = s->streams[i];
177  AVPacket *pkt = st->priv_data;
178  if (!pkt)
179  continue;
182  if (ret < 0 && (s->error_recognition & AV_EF_EXPLODE))
183  return ret;
184  }
185 
186  ret = flac_write_block_comment(s->pb, &s->metadata, !padding,
187  s->flags & AVFMT_FLAG_BITEXACT);
188  if (ret)
189  return ret;
190 
191  /* The command line flac encoder defaults to placing a seekpoint
192  * every 10s. So one might add padding to allow that later
193  * but there seems to be no simple way to get the duration here.
194  * So just add the amount requested by the user. */
195  if (padding)
196  flac_write_block_padding(s->pb, padding, 1);
197 
198  return 0;
199 }
200 
201 static int flac_init(struct AVFormatContext *s)
202 {
203  AVCodecParameters *par;
204  FlacMuxerContext *c = s->priv_data;
205  int i;
206 
207  c->audio_stream_idx = -1;
208  for (i = 0; i < s->nb_streams; i++) {
209  AVStream *st = s->streams[i];
210  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
211  if (c->audio_stream_idx >= 0 || st->codecpar->codec_id != AV_CODEC_ID_FLAC) {
212  av_log(s, AV_LOG_ERROR, "Invalid audio stream. Exactly one FLAC "
213  "audio stream is required.\n");
214  return AVERROR(EINVAL);
215  }
216  par = s->streams[i]->codecpar;
217  c->audio_stream_idx = i;
218  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
220  av_log(s, AV_LOG_WARNING, "Video stream #%d is not an attached picture. Ignoring\n", i);
221  continue;
222  } else if (st->codecpar->codec_id == AV_CODEC_ID_GIF) {
223  av_log(s, AV_LOG_ERROR, "GIF image support is not implemented.\n");
224  return AVERROR_PATCHWELCOME;
225  } else if (!c->write_header) {
226  av_log(s, AV_LOG_ERROR, "Can't write attached pictures without a header.\n");
227  return AVERROR(EINVAL);
228  }
229  c->waiting_pics++;
230  } else {
231  av_log(s, AV_LOG_ERROR, "Only audio streams and pictures are allowed in FLAC.\n");
232  return AVERROR(EINVAL);
233  }
234  }
235  if (c->audio_stream_idx < 0) {
236  av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
237  return AVERROR(EINVAL);
238  }
239 
240  /* add the channel layout tag */
241  if (par->channel_layout &&
242  !(par->channel_layout & ~0x3ffffULL) &&
244  AVDictionaryEntry *chmask = av_dict_get(s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK",
245  NULL, 0);
246 
247  if (chmask) {
248  av_log(s, AV_LOG_WARNING, "A WAVEFORMATEXTENSIBLE_CHANNEL_MASK is "
249  "already present, this muxer will not overwrite it.\n");
250  } else {
251  uint8_t buf[32];
252  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
253  av_dict_set(&s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
254  }
255  }
256 
257  return 0;
258 }
259 
261 {
262  FlacMuxerContext *c = s->priv_data;
263  AVCodecParameters *par = s->streams[c->audio_stream_idx]->codecpar;
264  int ret;
265 
266  if (!c->write_header)
267  return 0;
268 
269  ret = ff_flac_write_header(s->pb, par->extradata,
270  par->extradata_size, 0);
271  if (ret < 0)
272  return ret;
273 
274  if (!c->waiting_pics)
276 
277  return ret;
278 }
279 
281 {
282  FlacMuxerContext *c = s->priv_data;
283  uint8_t *streaminfo;
284  size_t streaminfo_size;
285 
286  /* check for updated streaminfo */
288  &streaminfo_size);
289  if (streaminfo && streaminfo_size == FLAC_STREAMINFO_SIZE) {
290  memcpy(c->streaminfo, streaminfo, FLAC_STREAMINFO_SIZE);
291  c->updated_streaminfo = 1;
292  }
293 
294  if (pkt->size)
295  avio_write(s->pb, pkt->data, pkt->size);
296  return 0;
297 }
298 
300 {
301  FlacMuxerContext *c = s->priv_data;
302  AVPacket *const pkt = ffformatcontext(s)->pkt;
303  int ret, write = 1;
304 
306  if (ret < 0)
307  write = 0;
308 
309  while (c->queue) {
310  avpriv_packet_list_get(&c->queue, &c->queue_end, pkt);
311  if (write && (ret = flac_write_audio_packet(s, pkt)) < 0)
312  write = 0;
314  }
315  return ret;
316 }
317 
319 {
320  AVIOContext *pb = s->pb;
321  int64_t file_size;
322  FlacMuxerContext *c = s->priv_data;
323 
324  if (c->waiting_pics) {
325  av_log(s, AV_LOG_WARNING, "No packets were sent for some of the "
326  "attached pictures.\n");
328  }
329 
330  if (!c->write_header || !c->updated_streaminfo)
331  return 0;
332 
333  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
334  /* rewrite the STREAMINFO header block data */
335  file_size = avio_tell(pb);
336  avio_seek(pb, 8, SEEK_SET);
337  avio_write(pb, c->streaminfo, FLAC_STREAMINFO_SIZE);
338  avio_seek(pb, file_size, SEEK_SET);
339  } else {
340  av_log(s, AV_LOG_WARNING, "unable to rewrite FLAC header.\n");
341  }
342 
343  return 0;
344 }
345 
346 static void flac_deinit(struct AVFormatContext *s)
347 {
348  FlacMuxerContext *c = s->priv_data;
349 
350  avpriv_packet_list_free(&c->queue, &c->queue_end);
351  for (unsigned i = 0; i < s->nb_streams; i++)
352  av_packet_free((AVPacket **)&s->streams[i]->priv_data);
353 }
354 
356 {
357  FlacMuxerContext *c = s->priv_data;
358  int ret;
359 
360  if (pkt->stream_index == c->audio_stream_idx) {
361  if (c->waiting_pics) {
362  /* buffer audio packets until we get all the pictures */
363  ret = avpriv_packet_list_put(&c->queue, &c->queue_end, pkt, av_packet_ref, 0);
364  if (ret < 0) {
365  av_log(s, AV_LOG_ERROR, "Out of memory in packet queue; skipping attached pictures\n");
366  c->waiting_pics = 0;
368  if (ret < 0)
369  return ret;
370  return flac_write_audio_packet(s, pkt);
371  }
372  } else
373  return flac_write_audio_packet(s, pkt);
374  } else {
375  AVStream *st = s->streams[pkt->stream_index];
376 
377  if (!c->waiting_pics ||
379  return 0;
380 
381  /* warn only once for each stream */
382  if (st->nb_frames == 1) {
383  av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
384  " ignoring.\n", pkt->stream_index);
385  }
386  if (st->nb_frames >= 1)
387  return 0;
388 
390  if (!st->priv_data)
391  av_log(s, AV_LOG_ERROR, "Out of memory queueing an attached picture; skipping\n");
392  c->waiting_pics--;
393 
394  /* flush the buffered audio packets */
395  if (!c->waiting_pics &&
396  (ret = flac_queue_flush(s)) < 0)
397  return ret;
398  }
399 
400  return 0;
401 }
402 
403 static const AVOption flacenc_options[] = {
404  { "write_header", "Write the file header", offsetof(FlacMuxerContext, write_header), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
405  { NULL },
406 };
407 
408 static const AVClass flac_muxer_class = {
409  .class_name = "flac muxer",
410  .item_name = av_default_item_name,
411  .option = flacenc_options,
412  .version = LIBAVUTIL_VERSION_INT,
413 };
414 
416  .name = "flac",
417  .long_name = NULL_IF_CONFIG_SMALL("raw FLAC"),
418  .priv_data_size = sizeof(FlacMuxerContext),
419  .mime_type = "audio/x-flac",
420  .extensions = "flac",
421  .audio_codec = AV_CODEC_ID_FLAC,
422  .video_codec = AV_CODEC_ID_PNG,
423  .init = flac_init,
427  .deinit = flac_deinit,
429  .priv_class = &flac_muxer_class,
430 };
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:417
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
LIBAVFORMAT_IDENT
#define LIBAVFORMAT_IDENT
Definition: version.h:46
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
flac_init
static int flac_init(struct AVFormatContext *s)
Definition: flacenc.c:201
AVOutputFormat::name
const char * name
Definition: avformat.h:496
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
ffformatcontext
static av_always_inline FFFormatContext * ffformatcontext(AVFormatContext *s)
Definition: internal.h:186
AVStream::priv_data
void * priv_data
Definition: avformat.h:866
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
AV_DISPOSITION_ATTACHED_PIC
#define AV_DISPOSITION_ATTACHED_PIC
The stream is stored in the file as an attached picture/"cover art" (e.g.
Definition: avformat.h:827
av_clip_uintp2
#define av_clip_uintp2
Definition: common.h:120
AVFMT_NOTIMESTAMPS
#define AVFMT_NOTIMESTAMPS
Format does not need / have any timestamps.
Definition: avformat.h:467
av_strcasecmp
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:215
id3v2.h
pixdesc.h
deinit
static void deinit(AVFormatContext *s)
Definition: chromaprint.c:50
flac_write_header
static int flac_write_header(struct AVFormatContext *s)
Definition: flacenc.c:260
AVPacket::data
uint8_t * data
Definition: packet.h:373
vorbiscomment.h
AVOption
AVOption.
Definition: opt.h:247
PacketList
Definition: packet_internal.h:26
flacenc.h
av_get_bits_per_pixel
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2516
AVDictionary
Definition: dict.c:30
AV_CODEC_ID_FLAC
@ AV_CODEC_ID_FLAC
Definition: codec_id.h:435
ff_flac_is_native_layout
int ff_flac_is_native_layout(uint64_t channel_layout)
Definition: flacenc_header.c:50
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:75
CodecMime
Definition: internal.h:55
flac_finish_header
static int flac_finish_header(struct AVFormatContext *s)
Definition: flacenc.c:166
flac_write_audio_packet
static int flac_write_audio_packet(struct AVFormatContext *s, AVPacket *pkt)
Definition: flacenc.c:280
ff_vorbiscomment_write
int ff_vorbiscomment_write(AVIOContext *pb, const AVDictionary *m, const char *vendor_string, AVChapter **chapters, unsigned int nb_chapters)
Write a VorbisComment into an AVIOContext.
Definition: vorbiscomment.c:65
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:486
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
flac_deinit
static void flac_deinit(struct AVFormatContext *s)
Definition: flacenc.c:346
FlacMuxerContext::queue
PacketList * queue
Definition: flacenc.c:43
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
flac_muxer_class
static const AVClass flac_muxer_class
Definition: flacenc.c:408
av_dict_get
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
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_OPT_FLAG_ENCODING_PARAM
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:277
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:126
ff_vorbiscomment_metadata_conv
const AVMetadataConv ff_vorbiscomment_metadata_conv[]
VorbisComment metadata conversion mapping.
Definition: vorbiscomment.c:33
FlacMuxerContext::attached_types
unsigned attached_types
Definition: flacenc.c:49
FlacMuxerContext::updated_streaminfo
int updated_streaminfo
Definition: flacenc.c:47
AV_CODEC_ID_PNG
@ AV_CODEC_ID_PNG
Definition: codec_id.h:111
flac_write_packet
static int flac_write_packet(struct AVFormatContext *s, AVPacket *pkt)
Definition: flacenc.c:355
AVFormatContext
Format I/O context.
Definition: avformat.h:1109
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1004
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
flac_write_picture
static int flac_write_picture(struct AVFormatContext *s, AVPacket *pkt)
Definition: flacenc.c:80
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:915
FLAC_STREAMINFO_SIZE
#define FLAC_STREAMINFO_SIZE
Definition: flac.h:34
flac_write_block_padding
static int flac_write_block_padding(AVIOContext *pb, unsigned int n_padding_bytes, int last_block)
Definition: flacenc.c:52
avio_w8
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:196
ffio_fill
void ffio_fill(AVIOContext *s, int b, int64_t count)
Definition: aviobuf.c:204
av_packet_ref
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:425
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1335
ff_id3v2_picture_types
const char *const ff_id3v2_picture_types[21]
Definition: id3v2.c:107
ff_vorbiscomment_length
int64_t ff_vorbiscomment_length(const AVDictionary *m, const char *vendor_string, AVChapter **chapters, unsigned int nb_chapters)
Calculate the length in bytes of a VorbisComment.
Definition: vorbiscomment.c:41
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
ff_id3v2_mime_tags
const CodecMime ff_id3v2_mime_tags[]
Definition: id3v2.c:131
AVStream::nb_frames
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:902
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
FlacMuxerContext::write_header
int write_header
Definition: flacenc.c:38
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AVPacket::size
int size
Definition: packet.h:374
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:262
flac_write_block_comment
static int flac_write_block_comment(AVIOContext *pb, AVDictionary **m, int last_block, int bitexact)
Definition: flacenc.c:61
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:218
avio_wb32
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:379
flac_queue_flush
static int flac_queue_flush(AVFormatContext *s)
Definition: flacenc.c:299
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:731
AV_CODEC_ID_GIF
@ AV_CODEC_ID_GIF
Definition: codec_id.h:147
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
AVOutputFormat
Definition: avformat.h:495
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
avio_internal.h
av_packet_get_side_data
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, size_t *size)
Get side information from packet.
Definition: avpacket.c:246
AVCodecParameters::height
int height
Definition: codec_par.h:127
ff_metadata_conv
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
FlacMuxerContext::streaminfo
uint8_t streaminfo[FLAC_STREAMINFO_SIZE]
Definition: flacenc.c:46
flacenc_options
static const AVOption flacenc_options[]
Definition: flacenc.c:403
len
int len
Definition: vorbis_enc_data.h:426
FlacMuxerContext::audio_stream_idx
int audio_stream_idx
Definition: flacenc.c:40
AVStream::disposition
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:904
AVFMT_FLAG_BITEXACT
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1244
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:857
FlacMuxerContext::waiting_pics
int waiting_pics
Definition: flacenc.c:41
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
AVClass::class_name
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:71
avpriv_packet_list_get
int avpriv_packet_list_get(PacketList **pkt_buffer, PacketList **pkt_buffer_end, AVPacket *pkt)
Remove the oldest AVPacket in the list and return it.
Definition: avpacket.c:571
avformat.h
FlacMuxerContext
Definition: flacenc.c:36
AVStream::index
int index
stream index in AVFormatContext
Definition: avformat.h:858
channel_layout.h
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
AV_PKT_DATA_NEW_EXTRADATA
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: packet.h:55
ff_flac_write_header
int ff_flac_write_header(AVIOContext *pb, const uint8_t *extradata, int extradata_size, int last_block)
Definition: flacenc_header.c:29
AVPacket::stream_index
int stream_index
Definition: packet.h:375
CodecMime::str
char str[32]
Definition: internal.h:56
CodecMime::id
enum AVCodecID id
Definition: internal.h:57
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
FlacMuxerContext::queue_end
PacketList * queue_end
Definition: flacenc.c:43
packet_internal.h
FFFormatContext::pkt
AVPacket * pkt
Used to hold temporary packets for the generic demuxing code.
Definition: internal.h:128
AVCodecParameters::format
int format
Definition: codec_par.h:84
flac_write_trailer
static int flac_write_trailer(struct AVFormatContext *s)
Definition: flacenc.c:318
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
avio_wb24
void avio_wb24(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:469
ff_flac_muxer
const AVOutputFormat ff_flac_muxer
Definition: flacenc.c:415
AVDictionaryEntry
Definition: dict.h:79
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
av_dict_set
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
AVCodecParameters::channel_layout
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVDictionaryEntry::value
char * value
Definition: dict.h:81
avstring.h
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:347
flac.h
snprintf
#define snprintf
Definition: snprintf.h:34
avpriv_packet_list_put
int avpriv_packet_list_put(PacketList **packet_buffer, PacketList **plast_pktl, AVPacket *pkt, int(*copy)(AVPacket *dst, const AVPacket *src), int flags)
Append an AVPacket to the list.
Definition: avpacket.c:531
avpriv_packet_list_free
void avpriv_packet_list_free(PacketList **pkt_buf, PacketList **pkt_buf_end)
Wipe the list and unref all the packets in it.
Definition: avpacket.c:587
av_packet_clone
AVPacket * av_packet_clone(const AVPacket *src)
Create a new packet that references the same data as src.
Definition: avpacket.c:461