FFmpeg: libavformat/aaxdec.c Source File

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libavformat

aaxdec.c

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1 /*

2 * AAX demuxer

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 */

22 #include "libavutil/intreadwrite.h"

23 #include "avformat.h"

24 #include "avio_internal.h"

25 #include "demux.h"

26 #include "internal.h"

28 typedef struct AAXColumn {

29 uint8_t flag;

30 uint8_t type;

31 const char *name;

32 uint32_t offset;

33 int size;

34 } AAXColumn;

36 typedef struct AAXSegment {

37 int64_t start;

38 int64_t end;

39 } AAXSegment;

41 typedef struct AAXContext {

42 int64_t table_size;

43 uint16_t version;

44 int64_t rows_offset;

45 int64_t strings_offset;

46 int64_t data_offset;

47 int64_t name_offset;

48 uint16_t columns;

49 uint16_t row_width;

50 uint32_t nb_segments;

51 int64_t schema_offset;

52 int64_t strings_size;

53 char *string_table;

55 uint32_t current_segment;

57 AAXColumn *xcolumns;

58 AAXSegment *segments;

59 } AAXContext;

61 static int aax_probe(const AVProbeData *p)

62 {

63 if (AV_RB32(p->buf) != MKBETAG('@','U','T','F'))

64 return 0;

65 if (AV_RB32(p->buf + 4) == 0)

66 return 0;

67 if (AV_RB16(p->buf + 8) > 1)

68 return 0;

69 if (AV_RB32(p->buf + 28) < 1)

70 return 0;

72 return AVPROBE_SCORE_MAX;

73 }

75 enum ColumnFlag {

76 COLUMN_FLAG_NAME = 0x1,

77 COLUMN_FLAG_DEFAULT = 0x2,

78 COLUMN_FLAG_ROW = 0x4,

79 COLUMN_FLAG_UNDEFINED = 0x8 /* shouldn't exist */

80 };

82 enum ColumnType {

83 COLUMN_TYPE_UINT8 = 0x00,

84 COLUMN_TYPE_SINT8 = 0x01,

85 COLUMN_TYPE_UINT16 = 0x02,

86 COLUMN_TYPE_SINT16 = 0x03,

87 COLUMN_TYPE_UINT32 = 0x04,

88 COLUMN_TYPE_SINT32 = 0x05,

89 COLUMN_TYPE_UINT64 = 0x06,

90 COLUMN_TYPE_SINT64 = 0x07,

91 COLUMN_TYPE_FLOAT = 0x08,

92 COLUMN_TYPE_DOUBLE = 0x09,

93 COLUMN_TYPE_STRING = 0x0a,

94 COLUMN_TYPE_VLDATA = 0x0b,

95 COLUMN_TYPE_UINT128 = 0x0c, /* for GUIDs */

96 COLUMN_TYPE_UNDEFINED = -1

97 };

99 static int64_t get_pts(AVFormatContext *s, int64_t pos, int size)

100 {

101 AAXContext *a = s->priv_data;

102 int64_t pts = 0;

103

104 for (int seg = 0; seg < a->current_segment; seg++)

105 pts += (a->segments[seg].end - a->segments[seg].start) / size;

106

107 pts += ((pos - a->segments[a->current_segment].start) / size);

108

109 return pts;

110 }

111

112 static int aax_read_header(AVFormatContext *s)

113 {

114 AAXContext *a = s->priv_data;

115 AVIOContext *pb = s->pb;

116 AVCodecParameters *par;

117 AVStream *st;

118 int64_t column_offset = 0;

119 int ret, extradata_size;

120 char *codec;

121 int64_t ret64;

122

123 avio_skip(pb, 4);

124 a->table_size = avio_rb32(pb) + 8LL;

125 a->version = avio_rb16(pb);

126 a->rows_offset = avio_rb16(pb) + 8LL;

127 a->strings_offset = avio_rb32(pb) + 8LL;

128 a->data_offset = avio_rb32(pb) + 8LL;

129 a->name_offset = avio_rb32(pb);

130 a->columns = avio_rb16(pb);

131 a->row_width = avio_rb16(pb);

132 a->nb_segments = avio_rb32(pb);

133

134 if (a->nb_segments < 1)

135 return AVERROR_INVALIDDATA;

136

137 a->schema_offset = 0x20;

138 a->strings_size = a->data_offset - a->strings_offset;

139

140 if (a->rows_offset > a->table_size ||

141 a->strings_offset > a->table_size ||

142 a->data_offset > a->table_size)

143 return AVERROR_INVALIDDATA;

144 if (a->strings_size <= 0 || a->name_offset >= a->strings_size ||

145 a->strings_size > UINT16_MAX)

146 return AVERROR_INVALIDDATA;

147 if (a->columns <= 0)

148 return AVERROR_INVALIDDATA;

149

150 a->segments = av_calloc(a->nb_segments, sizeof(*a->segments));

151 if (!a->segments)

152 return AVERROR(ENOMEM);

153

154 a->xcolumns = av_calloc(a->columns, sizeof(*a->xcolumns));

155 if (!a->xcolumns)

156 return AVERROR(ENOMEM);

157

158 a->string_table = av_calloc(a->strings_size + 1, sizeof(*a->string_table));

159 if (!a->string_table)

160 return AVERROR(ENOMEM);

161

162 for (int c = 0; c < a->columns; c++) {

163 uint8_t info = avio_r8(pb);

164 uint32_t offset = avio_rb32(pb);

165 int value_size;

166

167 if (offset >= a->strings_size)

168 return AVERROR_INVALIDDATA;

169

170 a->xcolumns[c].flag = info >> 4;

171 a->xcolumns[c].type = info & 0x0F;

172

173 switch (a->xcolumns[c].type) {

174 case COLUMN_TYPE_UINT8:

175 case COLUMN_TYPE_SINT8:

176 value_size = 0x01;

177 break;

178 case COLUMN_TYPE_UINT16:

179 case COLUMN_TYPE_SINT16:

180 value_size = 0x02;

181 break;

182 case COLUMN_TYPE_UINT32:

183 case COLUMN_TYPE_SINT32:

184 case COLUMN_TYPE_FLOAT:

185 case COLUMN_TYPE_STRING:

186 value_size = 0x04;

187 break;

188 case COLUMN_TYPE_VLDATA:

189 value_size = 0x08;

190 break;

191 case COLUMN_TYPE_UINT128:

192 value_size = 0x10;

193 break;

194 default:

195 return AVERROR_INVALIDDATA;

196 }

197

198 a->xcolumns[c].size = value_size;

199

200 if (a->xcolumns[c].flag & COLUMN_FLAG_NAME)

201 a->xcolumns[c].name = a->string_table + offset;

202

203 if (a->xcolumns[c].flag & COLUMN_FLAG_DEFAULT) {

204 /* data is found relative to columns start */

205 a->xcolumns[c].offset = avio_tell(pb) - a->schema_offset;

206 avio_skip(pb, value_size);

207 }

208

209 if (a->xcolumns[c].flag & COLUMN_FLAG_ROW) {

210 /* data is found relative to row start */

211 a->xcolumns[c].offset = column_offset;

212 column_offset += value_size;

213 }

214 }

215

216 ret = ret64 = avio_seek(pb, a->strings_offset, SEEK_SET);

217 if (ret64 < 0)

218 return ret;

219

220 ret = ffio_read_size(pb, a->string_table, a->strings_size);

221 if (ret < 0)

222 return ret;

223

224 for (int c = 0; c < a->columns; c++) {

225 int64_t data_offset = 0;

226 int64_t col_offset;

227 int flag, type;

228

229 if (!a->xcolumns[c].name || strcmp(a->xcolumns[c].name, "data"))

230 continue;

231

232 type = a->xcolumns[c].type;

233 flag = a->xcolumns[c].flag;

234 col_offset = a->xcolumns[c].offset;

235

236 for (uint64_t r = 0; r < a->nb_segments; r++) {

237 if (flag & COLUMN_FLAG_DEFAULT) {

238 data_offset = a->schema_offset + col_offset;

239 } else if (flag & COLUMN_FLAG_ROW) {

240 data_offset = a->rows_offset + r * a->row_width + col_offset;

241 } else

242 return AVERROR_INVALIDDATA;

243

244 ret = ret64 = avio_seek(pb, data_offset, SEEK_SET);

245 if (ret64 < 0)

246 return ret;

247

248 if (type == COLUMN_TYPE_VLDATA) {

249 int64_t start, size;

250

251 start = avio_rb32(pb);

252 size = avio_rb32(pb);

253 if (!size)

254 return AVERROR_INVALIDDATA;

255 a->segments[r].start = start + a->data_offset;

256 a->segments[r].end = a->segments[r].start + size;

257 if (r &&

258 a->segments[r].start < a->segments[r-1].end &&

259 a->segments[r].end > a->segments[r-1].start)

260 return AVERROR_INVALIDDATA;

261 } else

262 return AVERROR_INVALIDDATA;

263 }

264 }

265

266 if (!a->segments[0].end)

267 return AVERROR_INVALIDDATA;

268

269 st = avformat_new_stream(s, NULL);

270 if (!st)

271 return AVERROR(ENOMEM);

272 st->start_time = 0;

273 par = s->streams[0]->codecpar;

274 par->codec_type = AVMEDIA_TYPE_AUDIO;

275

276 codec = a->string_table + a->name_offset;

277 if (!strcmp(codec, "AAX")) {

278 par->codec_id = AV_CODEC_ID_ADPCM_ADX;

279 ret64 = avio_seek(pb, a->segments[0].start, SEEK_SET);

280 if (ret64 < 0 || avio_rb16(pb) != 0x8000)

281 return AVERROR_INVALIDDATA;

282 extradata_size = avio_rb16(pb) + 4;

283 if (extradata_size < 12)

284 return AVERROR_INVALIDDATA;

285 avio_seek(pb, -4, SEEK_CUR);

286 ret = ff_get_extradata(s, par, pb, extradata_size);

287 if (ret < 0)

288 return ret;

289 par->ch_layout.nb_channels = AV_RB8 (par->extradata + 7);

290 par->sample_rate = AV_RB32(par->extradata + 8);

291 if (!par->ch_layout.nb_channels || !par->sample_rate)

292 return AVERROR_INVALIDDATA;

293

294 avpriv_set_pts_info(st, 64, 32, par->sample_rate);

295 /*} else if (!strcmp(codec, "HCA") ){

296 par->codec_id = AV_CODEC_ID_HCA;*/

297 } else {

298 return AVERROR_INVALIDDATA;

299 }

300

301 return 0;

302 }

303

304 static int aax_read_packet(AVFormatContext *s, AVPacket *pkt)

305 {

306 AAXContext *a = s->priv_data;

307 AVCodecParameters *par = s->streams[0]->codecpar;

308 AVIOContext *pb = s->pb;

309 const int size = 18 * par->ch_layout.nb_channels;

310 int ret, extradata_size = 0;

311 uint8_t *extradata = NULL;

312 int skip = 0;

313

314 if (avio_feof(pb))

315 return AVERROR_EOF;

316

317 pkt->pos = avio_tell(pb);

318

319 for (uint32_t seg = 0; seg < a->nb_segments; seg++) {

320 int64_t start = a->segments[seg].start;

321 int64_t end = a->segments[seg].end;

322

323 if (pkt->pos >= start && pkt->pos <= end) {

324 a->current_segment = seg;

325 if (par->codec_id == AV_CODEC_ID_ADPCM_ADX)

326 skip = (end - start) - ((end - start) / size) * size;

327 break;

328 }

329 }

330

331 if (pkt->pos >= a->segments[a->current_segment].end - skip) {

332 if (a->current_segment + 1 == a->nb_segments)

333 return AVERROR_EOF;

334 a->current_segment++;

335 avio_seek(pb, a->segments[a->current_segment].start, SEEK_SET);

336

337 if (par->codec_id == AV_CODEC_ID_ADPCM_ADX) {

338 if (avio_rb16(pb) != 0x8000)

339 return AVERROR_INVALIDDATA;

340 extradata_size = avio_rb16(pb) + 4;

341 avio_seek(pb, -4, SEEK_CUR);

342 if (extradata_size < 12)

343 return AVERROR_INVALIDDATA;

344 extradata = av_malloc(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);

345 if (!extradata)

346 return AVERROR(ENOMEM);

347 if (avio_read(pb, extradata, extradata_size) != extradata_size) {

348 av_free(extradata);

349 return AVERROR(EIO);

350 }

351 memset(extradata + extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);

352 }

353 }

354

355 ret = av_get_packet(pb, pkt, size);

356 if (ret != size) {

357 av_free(extradata);

358 return ret < 0 ? ret : AVERROR(EIO);

359 }

360 pkt->duration = 1;

361 pkt->stream_index = 0;

362 pkt->pts = get_pts(s, pkt->pos, size);

363

364 if (extradata) {

365 ret = av_packet_add_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, extradata, extradata_size);

366 if (ret < 0) {

367 av_free(extradata);

368 return ret;

369 }

370 }

371

372 return ret;

373 }

374

375 static int aax_read_close(AVFormatContext *s)

376 {

377 AAXContext *a = s->priv_data;

378

379 av_freep(&a->segments);

380 av_freep(&a->xcolumns);

381 av_freep(&a->string_table);

382

383 return 0;

384 }

385

386 const AVInputFormat ff_aax_demuxer = {

387 .name = "aax",

388 .long_name = NULL_IF_CONFIG_SMALL("CRI AAX"),

389 .priv_data_size = sizeof(AAXContext),

390 .flags_internal = FF_FMT_INIT_CLEANUP,

391 .read_probe = aax_probe,

392 .read_header = aax_read_header,

393 .read_packet = aax_read_packet,

394 .read_close = aax_read_close,

395 .extensions = "aax",

396 .flags = AVFMT_GENERIC_INDEX,

397 };

AAXSegment::start

int64_t start

Definition: aaxdec.c:37

AVCodecParameters::extradata

uint8_t * extradata

Extra binary data needed for initializing the decoder, codec-dependent.

Definition: codec_par.h:75

FF_FMT_INIT_CLEANUP

#define FF_FMT_INIT_CLEANUP

For an AVInputFormat with this flag set read_close() needs to be called by the caller upon read_heade...

Definition: internal.h:48

const char * r

Definition: vf_curves.c:116

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

AAXSegment::end

int64_t end

Definition: aaxdec.c:38

avformat_new_stream

AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)

Add a new stream to a media file.

Definition: options.c:237

COLUMN_TYPE_DOUBLE

@ COLUMN_TYPE_DOUBLE

Definition: aaxdec.c:92

AVCodecParameters::codec_type

enum AVMediaType codec_type

General type of the encoded data.

Definition: codec_par.h:57

AVCodecParameters

This struct describes the properties of an encoded stream.

Definition: codec_par.h:53

AAXContext::segments

AAXSegment * segments

Definition: aaxdec.c:58

AVERROR_EOF

#define AVERROR_EOF

End of file.

Definition: error.h:57

COLUMN_TYPE_UNDEFINED

@ COLUMN_TYPE_UNDEFINED

Definition: aaxdec.c:96

AVPacket::duration

int64_t duration

Duration of this packet in AVStream->time_base units, 0 if unknown.

Definition: packet.h:392

aax_probe

static int aax_probe(const AVProbeData *p)

Definition: aaxdec.c:61

AVChannelLayout::nb_channels

int nb_channels

Number of channels in this layout.

Definition: channel_layout.h:300

av_malloc

#define av_malloc(s)

Definition: tableprint_vlc.h:30

ff_get_extradata

int ff_get_extradata(void *logctx, AVCodecParameters *par, AVIOContext *pb, int size)

Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...

Definition: demux_utils.c:355

AVPROBE_SCORE_MAX

#define AVPROBE_SCORE_MAX

maximum score

Definition: avformat.h:465

avpriv_set_pts_info

void avpriv_set_pts_info(AVStream *st, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)

Set the time base and wrapping info for a given stream.

Definition: avformat.c:697

av_packet_add_side_data

int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)

Wrap an existing array as a packet side data.

Definition: avpacket.c:196

COLUMN_TYPE_UINT128

@ COLUMN_TYPE_UINT128

Definition: aaxdec.c:95

read_close

static av_cold int read_close(AVFormatContext *ctx)

Definition: libcdio.c:143

avio_tell

static av_always_inline int64_t avio_tell(AVIOContext *s)

ftell() equivalent for AVIOContext.

Definition: avio.h:505

AVFMT_GENERIC_INDEX

#define AVFMT_GENERIC_INDEX

Use generic index building code.

Definition: avformat.h:482

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

pts

static int64_t pts

Definition: transcode_aac.c:654

COLUMN_TYPE_SINT32

@ COLUMN_TYPE_SINT32

Definition: aaxdec.c:88

aax_read_packet

static int aax_read_packet(AVFormatContext *s, AVPacket *pkt)

Definition: aaxdec.c:304

AAXContext::columns

uint16_t columns

Definition: aaxdec.c:48

AAXContext::string_table

char * string_table

Definition: aaxdec.c:53

aax_read_close

static int aax_read_close(AVFormatContext *s)

Definition: aaxdec.c:375

avio_rb32

unsigned int avio_rb32(AVIOContext *s)

Definition: aviobuf.c:790

pkt

AVPacket * pkt

Definition: movenc.c:59

AAXColumn

Definition: aaxdec.c:28

AVInputFormat

Definition: avformat.h:656

intreadwrite.h

#define s(width, name)

Definition: cbs_vp9.c:256

AVInputFormat::name

const char * name

A comma separated list of short names for the format.

Definition: avformat.h:661

AVProbeData::buf

unsigned char * buf

Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.

Definition: avformat.h:455

AVMEDIA_TYPE_AUDIO

@ AVMEDIA_TYPE_AUDIO

Definition: avutil.h:202

info

MIPS optimizations info

Definition: mips.txt:2

COLUMN_TYPE_SINT16

@ COLUMN_TYPE_SINT16

Definition: aaxdec.c:86

AAXContext::current_segment

uint32_t current_segment

Definition: aaxdec.c:55

AVFormatContext

Format I/O context.

Definition: avformat.h:1213

internal.h

read_header

static int read_header(FFV1Context *f)

Definition: ffv1dec.c:532

get_pts

static int64_t get_pts(AVFormatContext *s, int64_t pos, int size)

Definition: aaxdec.c:99

NULL

#define NULL

Definition: coverity.c:32

read_probe

static int read_probe(const AVProbeData *pd)

Definition: jvdec.c:55

COLUMN_TYPE_SINT64

@ COLUMN_TYPE_SINT64

Definition: aaxdec.c:90

AVProbeData

This structure contains the data a format has to probe a file.

Definition: avformat.h:453

AAXColumn::name

const char * name

Definition: aaxdec.c:31

COLUMN_FLAG_DEFAULT

@ COLUMN_FLAG_DEFAULT

Definition: aaxdec.c:77

COLUMN_TYPE_UINT8

@ COLUMN_TYPE_UINT8

Definition: aaxdec.c:83

AVCodecParameters::ch_layout

AVChannelLayout ch_layout

Audio only.

Definition: codec_par.h:212

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

AVCodecParameters::sample_rate

int sample_rate

Audio only.

Definition: codec_par.h:177

COLUMN_TYPE_UINT64

@ COLUMN_TYPE_UINT64

Definition: aaxdec.c:89

AAXContext::table_size

int64_t table_size

Definition: aaxdec.c:42

AVIOContext

Bytestream IO Context.

Definition: avio.h:162

AV_CODEC_ID_ADPCM_ADX

@ AV_CODEC_ID_ADPCM_ADX

Definition: codec_id.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

ColumnFlag

Definition: aaxdec.c:75

COLUMN_FLAG_ROW

@ COLUMN_FLAG_ROW

Definition: aaxdec.c:78

size

int size

Definition: twinvq_data.h:10344

AAXContext::rows_offset

int64_t rows_offset

Definition: aaxdec.c:44

MKBETAG

#define MKBETAG(a, b, c, d)

Definition: macros.h:56

AV_RB32

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_RB32

Definition: bytestream.h:96

COLUMN_TYPE_VLDATA

@ COLUMN_TYPE_VLDATA

Definition: aaxdec.c:94

AAXContext::strings_offset

int64_t strings_offset

Definition: aaxdec.c:45

avio_r8

int avio_r8(AVIOContext *s)

Definition: aviobuf.c:632

The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a

Definition: undefined.txt:41

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

AAXContext::data_offset

int64_t data_offset

Definition: aaxdec.c:46

ff_aax_demuxer

const AVInputFormat ff_aax_demuxer

Definition: aaxdec.c:386

AAXContext::name_offset

int64_t name_offset

Definition: aaxdec.c:47

AAXSegment

Definition: aaxdec.c:36

flag

#define flag(name)

Definition: cbs_av1.c:553

AVPacket::pts

int64_t pts

Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...

Definition: packet.h:367

avio_internal.h

AAXColumn::type

uint8_t type

Definition: aaxdec.c:30

COLUMN_FLAG_UNDEFINED

@ COLUMN_FLAG_UNDEFINED

Definition: aaxdec.c:79

COLUMN_TYPE_STRING

@ COLUMN_TYPE_STRING

Definition: aaxdec.c:93

demux.h

av_calloc

void * av_calloc(size_t nmemb, size_t size)

Definition: mem.c:272

AAXContext::schema_offset

int64_t schema_offset

Definition: aaxdec.c:51

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:102

AAXColumn::size

int size

Definition: aaxdec.c:33

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:948

avio_seek

int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)

fseek() equivalent for AVIOContext.

Definition: aviobuf.c:260

avio_rb16

unsigned int avio_rb16(AVIOContext *s)

Definition: aviobuf.c:775

COLUMN_TYPE_FLOAT

@ COLUMN_TYPE_FLOAT

Definition: aaxdec.c:91

pos

unsigned int pos

Definition: spdifenc.c:412

avformat.h

AV_INPUT_BUFFER_PADDING_SIZE

#define AV_INPUT_BUFFER_PADDING_SIZE

Definition: defs.h:40

AAXColumn::flag

uint8_t flag

Definition: aaxdec.c:29

COLUMN_TYPE_SINT8

@ COLUMN_TYPE_SINT8

Definition: aaxdec.c:84

AAXContext::strings_size

int64_t strings_size

Definition: aaxdec.c:52

aax_read_header

static int aax_read_header(AVFormatContext *s)

Definition: aaxdec.c:112

COLUMN_TYPE_UINT16

@ COLUMN_TYPE_UINT16

Definition: aaxdec.c:85

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:56

avio_read

int avio_read(AVIOContext *s, unsigned char *buf, int size)

Read size bytes from AVIOContext into buf.

Definition: aviobuf.c:641

AV_RB8

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_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL AV_RB8

Definition: bytestream.h:99

AVPacket::stream_index

int stream_index

Definition: packet.h:376

AAXContext

Definition: aaxdec.c:41

avio_skip

int64_t avio_skip(AVIOContext *s, int64_t offset)

Skip given number of bytes forward.

Definition: aviobuf.c:347

AAXContext::row_width

uint16_t row_width

Definition: aaxdec.c:49

AAXContext::version

uint16_t version

Definition: aaxdec.c:43

COLUMN_TYPE_UINT32

@ COLUMN_TYPE_UINT32

Definition: aaxdec.c:87

ColumnType

Definition: aaxdec.c:82

av_free

#define av_free(p)

Definition: tableprint_vlc.h:33

AVCodecParameters::codec_id

enum AVCodecID codec_id

Specific type of the encoded data (the codec used).

Definition: codec_par.h:61

AVPacket

This structure stores compressed data.

Definition: packet.h:351

AAXContext::nb_segments

uint32_t nb_segments

Definition: aaxdec.c:50

av_freep

#define av_freep(p)

Definition: tableprint_vlc.h:34

AVPacket::pos

int64_t pos

byte position in stream, -1 if unknown

Definition: packet.h:394

COLUMN_FLAG_NAME

@ COLUMN_FLAG_NAME

Definition: aaxdec.c:76

flags

#define flags(name, subs,...)

Definition: cbs_av1.c:561

AVERROR_INVALIDDATA

#define AVERROR_INVALIDDATA

Invalid data found when processing input.

Definition: error.h:61

ffio_read_size

int ffio_read_size(AVIOContext *s, unsigned char *buf, int size)

Read size bytes from AVIOContext into buf.

Definition: aviobuf.c:691

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:988

AAXColumn::offset

uint32_t offset

Definition: aaxdec.c:32

AV_RB16

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_WB24 unsigned int_TMPL AV_RB16

Definition: bytestream.h:98

AAXContext::xcolumns

AAXColumn * xcolumns

Definition: aaxdec.c:57

avio_feof

int avio_feof(AVIOContext *s)

Similar to feof() but also returns nonzero on read errors.

Definition: aviobuf.c:375

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