FFmpeg
argo_asf.c
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1 /*
2  * Argonaut Games ASF (de)muxer
3  *
4  * Copyright (C) 2020 Zane van Iperen (zane@zanevaniperen.com)
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 #include "avformat.h"
23 #include "internal.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/avassert.h"
26 #include "libavutil/opt.h"
27 #include "argo_asf.h"
28 
29 /* Maximum number of blocks to read at once. */
30 #define ASF_NB_BLOCKS 32
31 
32 typedef struct ArgoASFDemuxContext {
35  uint32_t blocks_read;
37 
38 typedef struct ArgoASFMuxContext {
39  const AVClass *class;
42  const char *name;
43  int64_t nb_blocks;
45 
46 void ff_argo_asf_parse_file_header(ArgoASFFileHeader *hdr, const uint8_t *buf)
47 {
48  hdr->magic = AV_RL32(buf + 0);
49  hdr->version_major = AV_RL16(buf + 4);
50  hdr->version_minor = AV_RL16(buf + 6);
51  hdr->num_chunks = AV_RL32(buf + 8);
52  hdr->chunk_offset = AV_RL32(buf + 12);
53  for (int i = 0; i < FF_ARRAY_ELEMS(hdr->name); i++)
54  hdr->name[i] = AV_RL8(buf + 16 + i);
55 }
56 
58 {
59  if (hdr->magic != ASF_TAG || hdr->num_chunks == 0)
60  return AVERROR_INVALIDDATA;
61 
63  return AVERROR_INVALIDDATA;
64 
65  return 0;
66 }
67 
68 void ff_argo_asf_parse_chunk_header(ArgoASFChunkHeader *hdr, const uint8_t *buf)
69 {
70  hdr->num_blocks = AV_RL32(buf + 0);
71  hdr->num_samples = AV_RL32(buf + 4);
72  hdr->unk1 = AV_RL32(buf + 8);
73  hdr->sample_rate = AV_RL16(buf + 12);
74  hdr->unk2 = AV_RL16(buf + 14);
75  hdr->flags = AV_RL32(buf + 16);
76 }
77 
79  const ArgoASFChunkHeader *ckhdr)
80 {
81  if (ckhdr->num_samples != ASF_SAMPLE_COUNT) {
82  av_log(s, AV_LOG_ERROR, "Invalid sample count. Got %u, expected %d\n",
84  return AVERROR_INVALIDDATA;
85  }
86 
87  if ((ckhdr->flags & ASF_CF_ALWAYS1) != ASF_CF_ALWAYS1 || (ckhdr->flags & ASF_CF_ALWAYS0) != 0) {
88  avpriv_request_sample(s, "Nonstandard flags (0x%08X)", ckhdr->flags);
89  return AVERROR_PATCHWELCOME;
90  }
91 
95 
96  if (ckhdr->flags & ASF_CF_STEREO) {
98  st->codecpar->channels = 2;
99  } else {
101  st->codecpar->channels = 1;
102  }
103 
104  /* v1.1 files (FX Fighter) are all marked as 44100, but are actually 22050. */
105  if (fhdr->version_major == 1 && fhdr->version_minor == 1)
106  st->codecpar->sample_rate = 22050;
107  else
108  st->codecpar->sample_rate = ckhdr->sample_rate;
109 
111 
112  if (ckhdr->flags & ASF_CF_BITS_PER_SAMPLE)
113  st->codecpar->bits_per_raw_sample = 16;
114  else
115  st->codecpar->bits_per_raw_sample = 8;
116 
117  if (st->codecpar->bits_per_raw_sample != 16) {
118  /* The header allows for these, but I've never seen any files with them. */
119  avpriv_request_sample(s, "Non 16-bit samples");
120  return AVERROR_PATCHWELCOME;
121  }
122 
123  /*
124  * (nchannel control bytes) + ((bytes_per_channel) * nchannel)
125  * For mono, this is 17. For stereo, this is 34.
126  */
127  st->codecpar->block_align = st->codecpar->channels +
128  (ckhdr->num_samples / 2) *
129  st->codecpar->channels;
130 
131  st->codecpar->bit_rate = st->codecpar->channels *
132  st->codecpar->sample_rate *
134 
135  avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
136  st->start_time = 0;
137 
138  if (fhdr->num_chunks == 1) {
139  st->duration = ckhdr->num_blocks * ckhdr->num_samples;
140  st->nb_frames = ckhdr->num_blocks;
141  }
142 
143  return 0;
144 }
145 
146 #if CONFIG_ARGO_ASF_DEMUXER
147 /*
148  * Known versions:
149  * 1.1: https://samples.ffmpeg.org/game-formats/brender/part2.zip
150  * FX Fighter
151  * 1.2: Croc! Legend of the Gobbos
152  * 2.1: Croc 2
153  * The Emperor's New Groove
154  * Disney's Aladdin in Nasira's Revenge
155  */
156 static int argo_asf_is_known_version(const ArgoASFFileHeader *hdr)
157 {
158  return (hdr->version_major == 1 && hdr->version_minor == 1) ||
159  (hdr->version_major == 1 && hdr->version_minor == 2) ||
160  (hdr->version_major == 2 && hdr->version_minor == 1);
161 }
162 
163 static int argo_asf_probe(const AVProbeData *p)
164 {
165  ArgoASFFileHeader hdr;
166 
168 
170 
171  if (hdr.magic != ASF_TAG)
172  return 0;
173 
174  if (!argo_asf_is_known_version(&hdr))
175  return AVPROBE_SCORE_EXTENSION / 2;
176 
177  return AVPROBE_SCORE_EXTENSION + 1;
178 }
179 
180 static int argo_asf_read_header(AVFormatContext *s)
181 {
182  int64_t ret;
183  AVIOContext *pb = s->pb;
184  AVStream *st;
185  ArgoASFDemuxContext *asf = s->priv_data;
186  uint8_t buf[ASF_MIN_BUFFER_SIZE];
187 
188  if (!(st = avformat_new_stream(s, NULL)))
189  return AVERROR(ENOMEM);
190 
191  if ((ret = avio_read(pb, buf, ASF_FILE_HEADER_SIZE)) < 0)
192  return ret;
193  else if (ret != ASF_FILE_HEADER_SIZE)
194  return AVERROR(EIO);
195 
197 
198  if ((ret = ff_argo_asf_validate_file_header(s, &asf->fhdr)) < 0)
199  return ret;
200 
201  /* This should only be 1 in ASF files. >1 is fine if in BRP. */
202  if (asf->fhdr.num_chunks != 1)
203  return AVERROR_INVALIDDATA;
204 
205  if ((ret = avio_skip(pb, asf->fhdr.chunk_offset - ASF_FILE_HEADER_SIZE)) < 0)
206  return ret;
207 
208  if ((ret = avio_read(pb, buf, ASF_CHUNK_HEADER_SIZE)) < 0)
209  return ret;
210  else if (ret != ASF_CHUNK_HEADER_SIZE)
211  return AVERROR(EIO);
212 
214 
215  return ff_argo_asf_fill_stream(s, st, &asf->fhdr, &asf->ckhdr);
216 }
217 
218 static int argo_asf_read_packet(AVFormatContext *s, AVPacket *pkt)
219 {
220  ArgoASFDemuxContext *asf = s->priv_data;
221 
222  AVStream *st = s->streams[0];
223  AVIOContext *pb = s->pb;
224  int ret;
225 
226  if (asf->blocks_read >= asf->ckhdr.num_blocks)
227  return AVERROR_EOF;
228 
231  if (ret < 0)
232  return ret;
233 
234  /* Something real screwy is going on. */
235  if (ret % st->codecpar->block_align != 0)
236  return AVERROR_INVALIDDATA;
237 
238 
239  pkt->stream_index = st->index;
240  pkt->duration = asf->ckhdr.num_samples * (ret / st->codecpar->block_align);
241  pkt->pts = asf->blocks_read * asf->ckhdr.num_samples;
242  asf->blocks_read += (ret / st->codecpar->block_align);
243 
245  return 0;
246 }
247 
248 static int argo_asf_seek(AVFormatContext *s, int stream_index,
249  int64_t pts, int flags)
250 {
251  ArgoASFDemuxContext *asf = s->priv_data;
252  AVStream *st = s->streams[stream_index];
253  int64_t offset;
254  uint32_t block = pts / asf->ckhdr.num_samples;
255 
256  if (block >= asf->ckhdr.num_blocks)
257  return -1;
258 
260  (block * st->codecpar->block_align);
261 
262  if ((offset = avio_seek(s->pb, offset, SEEK_SET)) < 0)
263  return offset;
264 
265  asf->blocks_read = block;
266  return 0;
267 }
268 
269 /*
270  * Not actually sure what ASF stands for.
271  * - Argonaut Sound File?
272  * - Audio Stream File?
273  */
275  .name = "argo_asf",
276  .long_name = NULL_IF_CONFIG_SMALL("Argonaut Games ASF"),
277  .priv_data_size = sizeof(ArgoASFDemuxContext),
278  .read_probe = argo_asf_probe,
279  .read_header = argo_asf_read_header,
280  .read_packet = argo_asf_read_packet,
281  .read_seek = argo_asf_seek,
282 };
283 #endif
284 
285 #if CONFIG_ARGO_ASF_MUXER
286 static int argo_asf_write_init(AVFormatContext *s)
287 {
288  ArgoASFMuxContext *ctx = s->priv_data;
289  const AVCodecParameters *par;
290 
291  if (s->nb_streams != 1) {
292  av_log(s, AV_LOG_ERROR, "ASF files have exactly one stream\n");
293  return AVERROR(EINVAL);
294  }
295 
296  par = s->streams[0]->codecpar;
297 
298  if (par->codec_id != AV_CODEC_ID_ADPCM_ARGO) {
299  av_log(s, AV_LOG_ERROR, "%s codec not supported\n",
300  avcodec_get_name(par->codec_id));
301  return AVERROR(EINVAL);
302  }
303 
304  if (ctx->version_major == 1 && ctx->version_minor == 1 && par->sample_rate != 22050) {
305  av_log(s, AV_LOG_ERROR, "ASF v1.1 files only support a sample rate of 22050\n");
306  return AVERROR(EINVAL);
307  }
308 
309  if (par->channels > 2) {
310  av_log(s, AV_LOG_ERROR, "ASF files only support up to 2 channels\n");
311  return AVERROR(EINVAL);
312  }
313 
314  if (par->block_align != 17 * par->channels)
315  return AVERROR(EINVAL);
316 
317  if (par->sample_rate > UINT16_MAX) {
318  av_log(s, AV_LOG_ERROR, "Sample rate too large\n");
319  return AVERROR(EINVAL);
320  }
321 
322  if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
323  av_log(s, AV_LOG_ERROR, "Stream not seekable, unable to write output file\n");
324  return AVERROR(EINVAL);
325  }
326 
327  return 0;
328 }
329 
330 static void argo_asf_write_file_header(const ArgoASFFileHeader *fhdr, AVIOContext *pb)
331 {
332  avio_wl32( pb, fhdr->magic);
333  avio_wl16( pb, fhdr->version_major);
334  avio_wl16( pb, fhdr->version_minor);
335  avio_wl32( pb, fhdr->num_chunks);
336  avio_wl32( pb, fhdr->chunk_offset);
337  avio_write(pb, fhdr->name, sizeof(fhdr->name));
338 }
339 
340 static void argo_asf_write_chunk_header(const ArgoASFChunkHeader *ckhdr, AVIOContext *pb)
341 {
342  avio_wl32(pb, ckhdr->num_blocks);
343  avio_wl32(pb, ckhdr->num_samples);
344  avio_wl32(pb, ckhdr->unk1);
345  avio_wl16(pb, ckhdr->sample_rate);
346  avio_wl16(pb, ckhdr->unk2);
347  avio_wl32(pb, ckhdr->flags);
348 }
349 
350 static int argo_asf_write_header(AVFormatContext *s)
351 {
352  const AVCodecParameters *par = s->streams[0]->codecpar;
353  ArgoASFMuxContext *ctx = s->priv_data;
354  ArgoASFChunkHeader chdr;
355  ArgoASFFileHeader fhdr = {
356  .magic = ASF_TAG,
357  .version_major = (uint16_t)ctx->version_major,
358  .version_minor = (uint16_t)ctx->version_minor,
359  .num_chunks = 1,
360  .chunk_offset = ASF_FILE_HEADER_SIZE
361  };
362 
363  /*
364  * If the user specified a name, use it as is. Otherwise take the
365  * basename and lop off the extension (if any).
366  */
367  if (ctx->name) {
368  strncpy(fhdr.name, ctx->name, sizeof(fhdr.name));
369  } else {
370  const char *start = av_basename(s->url);
371  const char *end = strrchr(start, '.');
372  size_t len;
373 
374  if (end)
375  len = end - start;
376  else
377  len = strlen(start);
378 
379  memcpy(fhdr.name, start, FFMIN(len, sizeof(fhdr.name)));
380  }
381 
382  chdr.num_blocks = 0;
384  chdr.unk1 = 0;
385 
386  if (ctx->version_major == 1 && ctx->version_minor == 1)
387  chdr.sample_rate = 44100;
388  else
389  chdr.sample_rate = par->sample_rate;
390 
391  chdr.unk2 = ~0;
393 
394  if (par->channels == 2)
395  chdr.flags |= ASF_CF_STEREO;
396 
397  argo_asf_write_file_header(&fhdr, s->pb);
398  argo_asf_write_chunk_header(&chdr, s->pb);
399  return 0;
400 }
401 
402 static int argo_asf_write_packet(AVFormatContext *s, AVPacket *pkt)
403 {
404  ArgoASFMuxContext *ctx = s->priv_data;
405  AVCodecParameters *par = s->streams[0]->codecpar;
406  int nb_blocks = pkt->size / par->block_align;
407 
408  if (pkt->size % par->block_align != 0)
409  return AVERROR_INVALIDDATA;
410 
411  if (ctx->nb_blocks + nb_blocks > UINT32_MAX)
412  return AVERROR_INVALIDDATA;
413 
414  avio_write(s->pb, pkt->data, pkt->size);
415 
416  ctx->nb_blocks += nb_blocks;
417  return 0;
418 }
419 
420 static int argo_asf_write_trailer(AVFormatContext *s)
421 {
422  ArgoASFMuxContext *ctx = s->priv_data;
423  int64_t ret;
424 
425  if ((ret = avio_seek(s->pb, ASF_FILE_HEADER_SIZE, SEEK_SET) < 0))
426  return ret;
427 
428  avio_wl32(s->pb, (uint32_t)ctx->nb_blocks);
429  return 0;
430 }
431 
432 static const AVOption argo_asf_options[] = {
433  {
434  .name = "version_major",
435  .help = "override file major version",
436  .offset = offsetof(ArgoASFMuxContext, version_major),
437  .type = AV_OPT_TYPE_INT,
438  .default_val = {.i64 = 2},
439  .min = 0,
440  .max = UINT16_MAX,
442  },
443  {
444  .name = "version_minor",
445  .help = "override file minor version",
446  .offset = offsetof(ArgoASFMuxContext, version_minor),
447  .type = AV_OPT_TYPE_INT,
448  .default_val = {.i64 = 1},
449  .min = 0,
450  .max = UINT16_MAX,
452  },
453  {
454  .name = "name",
455  .help = "embedded file name (max 8 characters)",
456  .offset = offsetof(ArgoASFMuxContext, name),
457  .type = AV_OPT_TYPE_STRING,
458  .default_val = {.str = NULL},
460  },
461  { NULL }
462 };
463 
464 static const AVClass argo_asf_muxer_class = {
465  .class_name = "argo_asf_muxer",
466  .item_name = av_default_item_name,
467  .option = argo_asf_options,
468  .version = LIBAVUTIL_VERSION_INT
469 };
470 
472  .name = "argo_asf",
473  .long_name = NULL_IF_CONFIG_SMALL("Argonaut Games ASF"),
474  /*
475  * NB: Can't do this as it conflicts with the actual ASF format.
476  * .extensions = "asf",
477  */
478  .audio_codec = AV_CODEC_ID_ADPCM_ARGO,
479  .video_codec = AV_CODEC_ID_NONE,
480  .init = argo_asf_write_init,
481  .write_header = argo_asf_write_header,
482  .write_packet = argo_asf_write_packet,
483  .write_trailer = argo_asf_write_trailer,
484  .priv_class = &argo_asf_muxer_class,
485  .priv_data_size = sizeof(ArgoASFMuxContext)
486 };
487 #endif
ArgoASFChunkHeader::sample_rate
uint16_t sample_rate
Definition: argo_asf.h:50
ff_argo_asf_demuxer
const AVInputFormat ff_argo_asf_demuxer
ArgoASFChunkHeader::num_samples
uint32_t num_samples
Definition: argo_asf.h:48
ArgoASFChunkHeader::flags
uint32_t flags
Definition: argo_asf.h:52
name
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 default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
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
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4376
ArgoASFChunkHeader::unk2
uint16_t unk2
Definition: argo_asf.h:51
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
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:55
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:90
ASF_CF_BITS_PER_SAMPLE
@ ASF_CF_BITS_PER_SAMPLE
Definition: argo_asf.h:56
AVPacket::data
uint8_t * data
Definition: packet.h:365
AVOption
AVOption.
Definition: opt.h:248
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:383
ArgoASFDemuxContext::fhdr
ArgoASFFileHeader fhdr
Definition: argo_asf.c:33
AV_RL8
#define AV_RL8(x)
Definition: intreadwrite.h:398
ff_argo_asf_fill_stream
int ff_argo_asf_fill_stream(AVFormatContext *s, AVStream *st, const ArgoASFFileHeader *fhdr, const ArgoASFChunkHeader *ckhdr)
Definition: argo_asf.c:78
av_basename
const char * av_basename(const char *path)
Thread safe basename.
Definition: avstring.c:260
ASF_NB_BLOCKS
#define ASF_NB_BLOCKS
Definition: argo_asf.c:30
avio_wl16
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:445
ASF_FILE_HEADER_SIZE
#define ASF_FILE_HEADER_SIZE
Definition: argo_asf.h:32
AVCodecParameters::channels
int channels
Audio only.
Definition: codec_par.h:166
ArgoASFMuxContext::version_minor
int version_minor
Definition: argo_asf.c:41
ArgoASFFileHeader::version_minor
uint16_t version_minor
Definition: argo_asf.h:40
AVCodecParameters::bits_per_raw_sample
int bits_per_raw_sample
This is the number of valid bits in each output sample.
Definition: codec_par.h:115
ArgoASFChunkHeader
Definition: argo_asf.h:46
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:150
AVPROBE_PADDING_SIZE
#define AVPROBE_PADDING_SIZE
extra allocated bytes at the end of the probe buffer
Definition: avformat.h:460
pts
static int64_t pts
Definition: transcode_aac.c:652
ArgoASFMuxContext::nb_blocks
int64_t nb_blocks
Definition: argo_asf.c:43
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:880
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:91
avassert.h
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
AVInputFormat
Definition: avformat.h:621
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
AV_PKT_FLAG_CORRUPT
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
Definition: packet.h:397
intreadwrite.h
ArgoASFMuxContext::name
const char * name
Definition: argo_asf.c:42
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
ArgoASFFileHeader::num_chunks
uint32_t num_chunks
Definition: argo_asf.h:41
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:626
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ctx
AVFormatContext * ctx
Definition: movenc.c:48
ArgoASFDemuxContext
Definition: argo_asf.c:32
AV_RL16
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:94
ArgoASFDemuxContext::blocks_read
uint32_t blocks_read
Definition: argo_asf.c:35
ASF_CF_STEREO
@ ASF_CF_STEREO
Definition: argo_asf.h:57
AVFormatContext
Format I/O context.
Definition: avformat.h:1097
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:984
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:527
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
ArgoASFDemuxContext::ckhdr
ArgoASFChunkHeader ckhdr
Definition: argo_asf.c:34
read_probe
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
AV_CODEC_ID_ADPCM_ARGO
@ AV_CODEC_ID_ADPCM_ARGO
Definition: codec_id.h:394
ff_argo_asf_validate_file_header
int ff_argo_asf_validate_file_header(AVFormatContext *s, const ArgoASFFileHeader *hdr)
Definition: argo_asf.c:57
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
argo_asf.h
ASF_CF_ALWAYS0
@ ASF_CF_ALWAYS0
Definition: argo_asf.h:62
AVPROBE_SCORE_EXTENSION
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:456
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:170
AVStream::nb_frames
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:882
ArgoASFFileHeader::version_major
uint16_t version_major
Definition: argo_asf.h:39
ASF_SAMPLE_COUNT
#define ASF_SAMPLE_COUNT
Definition: argo_asf.h:34
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
avpriv_set_pts_info
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4801
AVOption::name
const char * name
Definition: opt.h:249
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:215
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
avio_wl32
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:365
offset
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 offset
Definition: writing_filters.txt:86
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:371
ff_argo_asf_muxer
const AVOutputFormat ff_argo_asf_muxer
AV_SAMPLE_FMT_S16P
@ AV_SAMPLE_FMT_S16P
signed 16 bits, planar
Definition: samplefmt.h:67
avcodec_get_name
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:448
ArgoASFFileHeader::chunk_offset
uint32_t chunk_offset
Definition: argo_asf.h:42
i
int i
Definition: input.c:407
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
AVOutputFormat
Definition: avformat.h:495
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:358
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
ff_argo_asf_parse_chunk_header
void ff_argo_asf_parse_chunk_header(ArgoASFChunkHeader *hdr, const uint8_t *buf)
Definition: argo_asf.c:68
len
int len
Definition: vorbis_enc_data.h:426
ArgoASFMuxContext
Definition: argo_asf.c:38
av_get_packet
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:280
ret
ret
Definition: filter_design.txt:187
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVStream
Stream structure.
Definition: avformat.h:837
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
ArgoASFChunkHeader::num_blocks
uint32_t num_blocks
Definition: argo_asf.h:47
avformat.h
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
ArgoASFFileHeader
Definition: argo_asf.h:37
AVStream::index
int index
stream index in AVFormatContext
Definition: avformat.h:838
ArgoASFChunkHeader::unk1
uint32_t unk1
Definition: argo_asf.h:49
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
ASF_CHUNK_HEADER_SIZE
#define ASF_CHUNK_HEADER_SIZE
Definition: argo_asf.h:33
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:616
AVPacket::stream_index
int stream_index
Definition: packet.h:367
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:327
ASF_MIN_BUFFER_SIZE
#define ASF_MIN_BUFFER_SIZE
Definition: argo_asf.h:35
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
ff_argo_asf_parse_file_header
void ff_argo_asf_parse_file_header(ArgoASFFileHeader *hdr, const uint8_t *buf)
Definition: argo_asf.c:46
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:39
ArgoASFFileHeader::name
int8_t name[8]
Definition: argo_asf.h:43
AVCodecParameters::format
int format
Definition: codec_par.h:84
ASF_TAG
#define ASF_TAG
Definition: argo_asf.h:31
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
ArgoASFMuxContext::version_major
int version_major
Definition: argo_asf.c:40
AVCodecParameters::channel_layout
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVStream::start_time
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
Definition: avformat.h:870
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
ASF_CF_ALWAYS1
@ ASF_CF_ALWAYS1
Definition: argo_asf.h:61
ArgoASFFileHeader::magic
uint32_t magic
Definition: argo_asf.h:38