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 
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25 #include "libavcodec/flac.h"
27 #include "avformat.h"
28 #include "avio_internal.h"
29 #include "flacenc.h"
30 #include "id3v2.h"
31 #include "internal.h"
32 #include "vorbiscomment.h"
33 
34 
35 typedef struct FlacMuxerContext {
36  const AVClass *class;
38 
41  /* audio packets are queued here until we get all the attached pictures */
43 
44  /* updated streaminfo sent by the encoder at the end */
47 
48  unsigned attached_types;
50 
51 static int flac_write_block_padding(AVIOContext *pb, unsigned int n_padding_bytes,
52  int last_block)
53 {
54  avio_w8(pb, last_block ? 0x81 : 0x01);
55  avio_wb24(pb, n_padding_bytes);
56  ffio_fill(pb, 0, n_padding_bytes);
57  return 0;
58 }
59 
61  int last_block, int bitexact)
62 {
63  const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
64  int64_t len;
65 
67 
68  len = ff_vorbiscomment_length(*m, vendor, NULL, 0);
69  if (len >= ((1<<24) - 4))
70  return AVERROR(EINVAL);
71 
72  avio_w8(pb, last_block ? 0x84 : 0x04);
73  avio_wb24(pb, len);
74  ff_vorbiscomment_write(pb, *m, vendor, NULL, 0);
75 
76  return 0;
77 }
78 
80 {
81  FlacMuxerContext *c = s->priv_data;
82  AVIOContext *pb = s->pb;
83  const AVPixFmtDescriptor *pixdesc;
84  const CodecMime *mime = ff_id3v2_mime_tags;
86  const char *mimetype = NULL, *desc = "";
87  const AVStream *st = s->streams[pkt->stream_index];
88  int i, mimelen, desclen, type = 0, blocklen;
89 
90  if (!pkt->data)
91  return 0;
92 
93  while (mime->id != AV_CODEC_ID_NONE) {
94  if (mime->id == st->codecpar->codec_id) {
95  mimetype = mime->str;
96  break;
97  }
98  mime++;
99  }
100  if (!mimetype) {
101  av_log(s, AV_LOG_ERROR, "No mimetype is known for stream %d, cannot "
102  "write an attached picture.\n", st->index);
103  return AVERROR(EINVAL);
104  }
105  mimelen = strlen(mimetype);
106 
107  /* get the picture type */
108  e = av_dict_get(st->metadata, "comment", NULL, 0);
109  for (i = 0; e && i < FF_ARRAY_ELEMS(ff_id3v2_picture_types); i++) {
111  type = i;
112  break;
113  }
114  }
115 
116  if ((c->attached_types & (1 << type)) & 0x6) {
117  av_log(s, AV_LOG_ERROR, "Duplicate attachment for type '%s'\n", ff_id3v2_picture_types[type]);
118  return AVERROR(EINVAL);
119  }
120 
121  if (type == 1 && (st->codecpar->codec_id != AV_CODEC_ID_PNG ||
122  st->codecpar->width != 32 ||
123  st->codecpar->height != 32)) {
124  av_log(s, AV_LOG_ERROR, "File icon attachment must be a 32x32 PNG");
125  return AVERROR(EINVAL);
126  }
127 
128  c->attached_types |= (1 << type);
129 
130  /* get the description */
131  if ((e = av_dict_get(st->metadata, "title", NULL, 0)))
132  desc = e->value;
133  desclen = strlen(desc);
134 
135  blocklen = 4 + 4 + mimelen + 4 + desclen + 4 + 4 + 4 + 4 + 4 + pkt->size;
136  if (blocklen >= 1<<24) {
137  av_log(s, AV_LOG_ERROR, "Picture block too big %d >= %d\n", blocklen, 1<<24);
138  return AVERROR(EINVAL);
139  }
140 
141  avio_w8(pb, 0x06);
142  avio_wb24(pb, blocklen);
143 
144  avio_wb32(pb, type);
145 
146  avio_wb32(pb, mimelen);
147  avio_write(pb, mimetype, mimelen);
148 
149  avio_wb32(pb, desclen);
150  avio_write(pb, desc, desclen);
151 
152  avio_wb32(pb, st->codecpar->width);
153  avio_wb32(pb, st->codecpar->height);
154  if ((pixdesc = av_pix_fmt_desc_get(st->codecpar->format)))
155  avio_wb32(pb, av_get_bits_per_pixel(pixdesc));
156  else
157  avio_wb32(pb, 0);
158  avio_wb32(pb, 0);
159 
160  avio_wb32(pb, pkt->size);
161  avio_write(pb, pkt->data, pkt->size);
162  return 0;
163 }
164 
166 {
167  int i, ret, padding = s->metadata_header_padding;
168  if (padding < 0)
169  padding = 8192;
170  /* The FLAC specification states that 24 bits are used to represent the
171  * size of a metadata block so we must clip this value to 2^24-1. */
172  padding = av_clip_uintp2(padding, 24);
173 
174  for (i = 0; i < s->nb_streams; i++) {
175  AVStream *st = s->streams[i];
176  AVPacket *pkt = st->priv_data;
177  if (!pkt)
178  continue;
181  if (ret < 0 && (s->error_recognition & AV_EF_EXPLODE))
182  return ret;
183  }
184 
185  ret = flac_write_block_comment(s->pb, &s->metadata, !padding,
186  s->flags & AVFMT_FLAG_BITEXACT);
187  if (ret)
188  return ret;
189 
190  /* The command line flac encoder defaults to placing a seekpoint
191  * every 10s. So one might add padding to allow that later
192  * but there seems to be no simple way to get the duration here.
193  * So just add the amount requested by the user. */
194  if (padding)
195  flac_write_block_padding(s->pb, padding, 1);
196 
197  return 0;
198 }
199 
200 static int flac_init(struct AVFormatContext *s)
201 {
202  AVCodecParameters *par;
203  FlacMuxerContext *c = s->priv_data;
204  int i;
205 
206  c->audio_stream_idx = -1;
207  for (i = 0; i < s->nb_streams; i++) {
208  AVStream *st = s->streams[i];
209  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
210  if (c->audio_stream_idx >= 0 || st->codecpar->codec_id != AV_CODEC_ID_FLAC) {
211  av_log(s, AV_LOG_ERROR, "Invalid audio stream. Exactly one FLAC "
212  "audio stream is required.\n");
213  return AVERROR(EINVAL);
214  }
215  par = s->streams[i]->codecpar;
216  c->audio_stream_idx = i;
217  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
219  av_log(s, AV_LOG_WARNING, "Video stream #%d is not an attached picture. Ignoring\n", i);
220  continue;
221  } else if (st->codecpar->codec_id == AV_CODEC_ID_GIF) {
222  av_log(s, AV_LOG_ERROR, "GIF image support is not implemented.\n");
223  return AVERROR_PATCHWELCOME;
224  } else if (!c->write_header) {
225  av_log(s, AV_LOG_ERROR, "Can't write attached pictures without a header.\n");
226  return AVERROR(EINVAL);
227  }
228  c->waiting_pics++;
229  } else {
230  av_log(s, AV_LOG_ERROR, "Only audio streams and pictures are allowed in FLAC.\n");
231  return AVERROR(EINVAL);
232  }
233  }
234  if (c->audio_stream_idx < 0) {
235  av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
236  return AVERROR(EINVAL);
237  }
238 
239  /* add the channel layout tag */
240  if (par->channel_layout &&
241  !(par->channel_layout & ~0x3ffffULL) &&
243  AVDictionaryEntry *chmask = av_dict_get(s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK",
244  NULL, 0);
245 
246  if (chmask) {
247  av_log(s, AV_LOG_WARNING, "A WAVEFORMATEXTENSIBLE_CHANNEL_MASK is "
248  "already present, this muxer will not overwrite it.\n");
249  } else {
250  uint8_t buf[32];
251  snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
252  av_dict_set(&s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
253  }
254  }
255 
256  return 0;
257 }
258 
260 {
261  FlacMuxerContext *c = s->priv_data;
262  AVCodecParameters *par = s->streams[c->audio_stream_idx]->codecpar;
263  int ret;
264 
265  if (!c->write_header)
266  return 0;
267 
268  ret = ff_flac_write_header(s->pb, par->extradata,
269  par->extradata_size, 0);
270  if (ret < 0)
271  return ret;
272 
273  if (!c->waiting_pics)
275 
276  return ret;
277 }
278 
280 {
281  FlacMuxerContext *c = s->priv_data;
282  uint8_t *streaminfo;
283  size_t streaminfo_size;
284 
285  /* check for updated streaminfo */
287  &streaminfo_size);
288  if (streaminfo && streaminfo_size == FLAC_STREAMINFO_SIZE) {
289  memcpy(c->streaminfo, streaminfo, FLAC_STREAMINFO_SIZE);
290  c->updated_streaminfo = 1;
291  }
292 
293  if (pkt->size)
294  avio_write(s->pb, pkt->data, pkt->size);
295  return 0;
296 }
297 
299 {
300  FlacMuxerContext *c = s->priv_data;
301  AVPacket pkt;
302  int ret, write = 1;
303 
305  if (ret < 0)
306  write = 0;
307 
308  while (c->queue) {
309  avpriv_packet_list_get(&c->queue, &c->queue_end, &pkt);
310  if (write && (ret = flac_write_audio_packet(s, &pkt)) < 0)
311  write = 0;
313  }
314  return ret;
315 }
316 
318 {
319  AVIOContext *pb = s->pb;
320  int64_t file_size;
321  FlacMuxerContext *c = s->priv_data;
322 
323  if (c->waiting_pics) {
324  av_log(s, AV_LOG_WARNING, "No packets were sent for some of the "
325  "attached pictures.\n");
327  }
328 
329  if (!c->write_header || !c->updated_streaminfo)
330  return 0;
331 
332  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
333  /* rewrite the STREAMINFO header block data */
334  file_size = avio_tell(pb);
335  avio_seek(pb, 8, SEEK_SET);
336  avio_write(pb, c->streaminfo, FLAC_STREAMINFO_SIZE);
337  avio_seek(pb, file_size, SEEK_SET);
338  } else {
339  av_log(s, AV_LOG_WARNING, "unable to rewrite FLAC header.\n");
340  }
341 
342  return 0;
343 }
344 
345 static void flac_deinit(struct AVFormatContext *s)
346 {
347  FlacMuxerContext *c = s->priv_data;
348 
349  avpriv_packet_list_free(&c->queue, &c->queue_end);
350  for (unsigned i = 0; i < s->nb_streams; i++)
351  av_packet_free((AVPacket **)&s->streams[i]->priv_data);
352 }
353 
355 {
356  FlacMuxerContext *c = s->priv_data;
357  int ret;
358 
359  if (pkt->stream_index == c->audio_stream_idx) {
360  if (c->waiting_pics) {
361  /* buffer audio packets until we get all the pictures */
362  ret = avpriv_packet_list_put(&c->queue, &c->queue_end, pkt, av_packet_ref, 0);
363  if (ret < 0) {
364  av_log(s, AV_LOG_ERROR, "Out of memory in packet queue; skipping attached pictures\n");
365  c->waiting_pics = 0;
367  if (ret < 0)
368  return ret;
369  return flac_write_audio_packet(s, pkt);
370  }
371  } else
372  return flac_write_audio_packet(s, pkt);
373  } else {
374  AVStream *st = s->streams[pkt->stream_index];
375 
376  if (!c->waiting_pics ||
378  return 0;
379 
380  /* warn only once for each stream */
381  if (st->nb_frames == 1) {
382  av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
383  " ignoring.\n", pkt->stream_index);
384  }
385  if (st->nb_frames >= 1)
386  return 0;
387 
389  if (!st->priv_data)
390  av_log(s, AV_LOG_ERROR, "Out of memory queueing an attached picture; skipping\n");
391  c->waiting_pics--;
392 
393  /* flush the buffered audio packets */
394  if (!c->waiting_pics &&
395  (ret = flac_queue_flush(s)) < 0)
396  return ret;
397  }
398 
399  return 0;
400 }
401 
402 static const AVOption flacenc_options[] = {
403  { "write_header", "Write the file header", offsetof(FlacMuxerContext, write_header), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
404  { NULL },
405 };
406 
407 static const AVClass flac_muxer_class = {
408  .class_name = "flac muxer",
409  .item_name = av_default_item_name,
410  .option = flacenc_options,
411  .version = LIBAVUTIL_VERSION_INT,
412 };
413 
415  .name = "flac",
416  .long_name = NULL_IF_CONFIG_SMALL("raw FLAC"),
417  .priv_data_size = sizeof(FlacMuxerContext),
418  .mime_type = "audio/x-flac",
419  .extensions = "flac",
420  .audio_codec = AV_CODEC_ID_FLAC,
421  .video_codec = AV_CODEC_ID_PNG,
422  .init = flac_init,
426  .deinit = flac_deinit,
428  .priv_class = &flac_muxer_class,
429 };
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:403
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:187
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:200
AVOutputFormat::name
const char * name
Definition: avformat.h:491
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
AVStream::priv_data
void * priv_data
Definition: avformat.h:841
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2541
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:800
av_clip_uintp2
#define av_clip_uintp2
Definition: common.h:146
AVFMT_NOTIMESTAMPS
#define AVFMT_NOTIMESTAMPS
Format does not need / have any timestamps.
Definition: avformat.h:462
av_strcasecmp
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:215
id3v2.h
pixdesc.h
flac_write_header
static int flac_write_header(struct AVFormatContext *s)
Definition: flacenc.c:259
AVPacket::data
uint8_t * data
Definition: packet.h:365
vorbiscomment.h
AVOption
AVOption.
Definition: opt.h:248
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:2493
AVDictionary
Definition: dict.c:30
AV_CODEC_ID_FLAC
@ AV_CODEC_ID_FLAC
Definition: codec_id.h:432
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:70
CodecMime
Definition: internal.h:47
flac_finish_header
static int flac_finish_header(struct AVFormatContext *s)
Definition: flacenc.c:165
flac_write_audio_packet
static int flac_write_audio_packet(struct AVFormatContext *s, AVPacket *pkt)
Definition: flacenc.c:279
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:557
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:345
FlacMuxerContext::queue
PacketList * queue
Definition: flacenc.c:42
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:181
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:407
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:278
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:48
FlacMuxerContext::updated_streaminfo
int updated_streaminfo
Definition: flacenc.c:46
AV_CODEC_ID_PNG
@ AV_CODEC_ID_PNG
Definition: codec_id.h:110
flac_write_packet
static int flac_write_packet(struct AVFormatContext *s, AVPacket *pkt)
Definition: flacenc.c:354
AVFormatContext
Format I/O context.
Definition: avformat.h:1106
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:979
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
flac_write_picture
static int flac_write_picture(struct AVFormatContext *s, AVPacket *pkt)
Definition: flacenc.c:79
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
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:890
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:51
avio_w8
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:193
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:410
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1441
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:877
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:37
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AVPacket::size
int size
Definition: packet.h:366
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:260
flac_write_block_comment
static int flac_write_block_comment(AVIOContext *pb, AVDictionary **m, int last_block, int bitexact)
Definition: flacenc.c:60
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:215
avio_wb32
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:373
flac_queue_flush
static int flac_queue_flush(AVFormatContext *s)
Definition: flacenc.c:298
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:729
AV_CODEC_ID_GIF
@ AV_CODEC_ID_GIF
Definition: codec_id.h:146
i
int i
Definition: input.c:407
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
AVOutputFormat
Definition: avformat.h:490
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:241
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:45
flacenc_options
static const AVOption flacenc_options[]
Definition: flacenc.c:402
len
int len
Definition: vorbis_enc_data.h:452
FlacMuxerContext::audio_stream_idx
int audio_stream_idx
Definition: flacenc.c:39
AVStream::disposition
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:879
AVFMT_FLAG_BITEXACT
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1241
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:832
FlacMuxerContext::waiting_pics
int waiting_pics
Definition: flacenc.c:40
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:243
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:72
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:553
avformat.h
FlacMuxerContext
Definition: flacenc.c:35
AVStream::index
int index
stream index in AVFormatContext
Definition: avformat.h:833
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:367
CodecMime::str
char str[32]
Definition: internal.h:48
CodecMime::id
enum AVCodecID id
Definition: internal.h:49
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:42
packet_internal.h
AVCodecParameters::format
int format
Definition: codec_par.h:84
flac_write_trailer
static int flac_write_trailer(struct AVFormatContext *s)
Definition: flacenc.c:317
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:70
avio_wb24
void avio_wb24(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:463
ff_flac_muxer
const AVOutputFormat ff_flac_muxer
Definition: flacenc.c:414
AVDictionaryEntry
Definition: dict.h:81
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:342
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
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
ffio_fill
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:201
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:83
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
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:516
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:569
av_packet_clone
AVPacket * av_packet_clone(const AVPacket *src)
Create a new packet that references the same data as src.
Definition: avpacket.c:446