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 "libavutil/mem.h"

24 #include "avformat.h"

25 #include "avio_internal.h"

26 #include "demux.h"

27 #include "internal.h"

29 typedef struct AAXColumn {

30 uint8_t flag;

31 uint8_t type;

32 const char *name;

33 uint32_t offset;

34 int size;

35 } AAXColumn;

37 typedef struct AAXSegment {

38 int64_t start;

39 int64_t end;

40 } AAXSegment;

42 typedef struct AAXContext {

43 int64_t table_size;

44 uint16_t version;

45 int64_t rows_offset;

46 int64_t strings_offset;

47 int64_t data_offset;

48 int64_t name_offset;

49 uint16_t columns;

50 uint16_t row_width;

51 uint32_t nb_segments;

52 int64_t schema_offset;

53 int64_t strings_size;

54 char *string_table;

56 uint32_t current_segment;

58 AAXColumn *xcolumns;

59 AAXSegment *segments;

60 } AAXContext;

62 static int aax_probe(const AVProbeData *p)

63 {

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

65 return 0;

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

67 return 0;

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

69 return 0;

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

71 return 0;

73 return AVPROBE_SCORE_MAX;

74 }

76 enum ColumnFlag {

77 COLUMN_FLAG_NAME = 0x1,

78 COLUMN_FLAG_DEFAULT = 0x2,

79 COLUMN_FLAG_ROW = 0x4,

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

81 };

83 enum ColumnType {

84 COLUMN_TYPE_UINT8 = 0x00,

85 COLUMN_TYPE_SINT8 = 0x01,

86 COLUMN_TYPE_UINT16 = 0x02,

87 COLUMN_TYPE_SINT16 = 0x03,

88 COLUMN_TYPE_UINT32 = 0x04,

89 COLUMN_TYPE_SINT32 = 0x05,

90 COLUMN_TYPE_UINT64 = 0x06,

91 COLUMN_TYPE_SINT64 = 0x07,

92 COLUMN_TYPE_FLOAT = 0x08,

93 COLUMN_TYPE_DOUBLE = 0x09,

94 COLUMN_TYPE_STRING = 0x0a,

95 COLUMN_TYPE_VLDATA = 0x0b,

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

97 COLUMN_TYPE_UNDEFINED = -1

98 };

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

101 {

102 AAXContext *a = s->priv_data;

103 int64_t pts = 0;

104

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

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

107

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

109

110 return pts;

111 }

112

113 static int aax_read_header(AVFormatContext *s)

114 {

115 AAXContext *a = s->priv_data;

116 AVIOContext *pb = s->pb;

117 AVCodecParameters *par;

118 AVStream *st;

119 int64_t column_offset = 0;

120 int ret, extradata_size;

121 char *codec;

122 int64_t ret64;

123

124 avio_skip(pb, 4);

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

126 a->version = avio_rb16(pb);

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

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

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

130 a->name_offset = avio_rb32(pb);

131 a->columns = avio_rb16(pb);

132 a->row_width = avio_rb16(pb);

133 a->nb_segments = avio_rb32(pb);

134

135 if (a->nb_segments < 1)

136 return AVERROR_INVALIDDATA;

137

138 a->schema_offset = 0x20;

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

140

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

142 a->strings_offset > a->table_size ||

143 a->data_offset > a->table_size)

144 return AVERROR_INVALIDDATA;

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

146 a->strings_size > UINT16_MAX)

147 return AVERROR_INVALIDDATA;

148 if (a->columns <= 0)

149 return AVERROR_INVALIDDATA;

150

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

152 if (!a->segments)

153 return AVERROR(ENOMEM);

154

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

156 if (!a->xcolumns)

157 return AVERROR(ENOMEM);

158

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

160 if (!a->string_table)

161 return AVERROR(ENOMEM);

162

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

164 uint8_t info = avio_r8(pb);

165 uint32_t offset = avio_rb32(pb);

166 int value_size;

167

168 if (offset >= a->strings_size)

169 return AVERROR_INVALIDDATA;

170

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

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

173

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

175 case COLUMN_TYPE_UINT8:

176 case COLUMN_TYPE_SINT8:

177 value_size = 0x01;

178 break;

179 case COLUMN_TYPE_UINT16:

180 case COLUMN_TYPE_SINT16:

181 value_size = 0x02;

182 break;

183 case COLUMN_TYPE_UINT32:

184 case COLUMN_TYPE_SINT32:

185 case COLUMN_TYPE_FLOAT:

186 case COLUMN_TYPE_STRING:

187 value_size = 0x04;

188 break;

189 case COLUMN_TYPE_VLDATA:

190 value_size = 0x08;

191 break;

192 case COLUMN_TYPE_UINT128:

193 value_size = 0x10;

194 break;

195 default:

196 return AVERROR_INVALIDDATA;

197 }

198

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

200

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

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

203

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

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

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

207 avio_skip(pb, value_size);

208 }

209

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

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

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

213 column_offset += value_size;

214 }

215 }

216

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

218 if (ret64 < 0)

219 return ret;

220

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

222 if (ret < 0)

223 return ret;

224

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

226 int64_t data_offset = 0;

227 int64_t col_offset;

228 int flag, type;

229

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

231 continue;

232

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

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

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

236

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

238 if (flag & COLUMN_FLAG_DEFAULT) {

239 data_offset = a->schema_offset + col_offset;

240 } else if (flag & COLUMN_FLAG_ROW) {

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

242 } else

243 return AVERROR_INVALIDDATA;

244

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

246 if (ret64 < 0)

247 return ret;

248

249 if (type == COLUMN_TYPE_VLDATA) {

250 int64_t start, size;

251

252 start = avio_rb32(pb);

253 size = avio_rb32(pb);

254 if (!size)

255 return AVERROR_INVALIDDATA;

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

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

258 if (r &&

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

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

261 return AVERROR_INVALIDDATA;

262 } else

263 return AVERROR_INVALIDDATA;

264 }

265 }

266

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

268 return AVERROR_INVALIDDATA;

269

270 st = avformat_new_stream(s, NULL);

271 if (!st)

272 return AVERROR(ENOMEM);

273 st->start_time = 0;

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

275 par->codec_type = AVMEDIA_TYPE_AUDIO;

276

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

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

279 par->codec_id = AV_CODEC_ID_ADPCM_ADX;

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

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

282 return AVERROR_INVALIDDATA;

283 extradata_size = avio_rb16(pb) + 4;

284 if (extradata_size < 12)

285 return AVERROR_INVALIDDATA;

286 avio_seek(pb, -4, SEEK_CUR);

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

288 if (ret < 0)

289 return ret;

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

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

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

293 return AVERROR_INVALIDDATA;

294

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

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

297 par->codec_id = AV_CODEC_ID_HCA;*/

298 } else {

299 return AVERROR_INVALIDDATA;

300 }

301

302 return 0;

303 }

304

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

306 {

307 AAXContext *a = s->priv_data;

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

309 AVIOContext *pb = s->pb;

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

311 int ret, extradata_size = 0;

312 uint8_t *extradata = NULL;

313 int skip = 0;

314

315 if (avio_feof(pb))

316 return AVERROR_EOF;

317

318 pkt->pos = avio_tell(pb);

319

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

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

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

323

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

325 a->current_segment = seg;

326 if (par->codec_id == AV_CODEC_ID_ADPCM_ADX)

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

328 break;

329 }

330 }

331

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

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

334 return AVERROR_EOF;

335 a->current_segment++;

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

337

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

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

340 return AVERROR_INVALIDDATA;

341 extradata_size = avio_rb16(pb) + 4;

342 avio_seek(pb, -4, SEEK_CUR);

343 if (extradata_size < 12)

344 return AVERROR_INVALIDDATA;

345 extradata = av_malloc(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);

346 if (!extradata)

347 return AVERROR(ENOMEM);

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

349 av_free(extradata);

350 return AVERROR(EIO);

351 }

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

353 }

354 }

355

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

357 if (ret != size) {

358 av_free(extradata);

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

360 }

361 pkt->duration = 1;

362 pkt->stream_index = 0;

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

364

365 if (extradata) {

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

367 if (ret < 0) {

368 av_free(extradata);

369 return ret;

370 }

371 }

372

373 return ret;

374 }

375

376 static int aax_read_close(AVFormatContext *s)

377 {

378 AAXContext *a = s->priv_data;

379

380 av_freep(&a->segments);

381 av_freep(&a->xcolumns);

382 av_freep(&a->string_table);

383

384 return 0;

385 }

386

387 const FFInputFormat ff_aax_demuxer = {

388 .p.name = "aax",

389 .p.long_name = NULL_IF_CONFIG_SMALL("CRI AAX"),

390 .p.extensions = "aax",

391 .p.flags = AVFMT_GENERIC_INDEX,

392 .priv_data_size = sizeof(AAXContext),

393 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,

394 .read_probe = aax_probe,

395 .read_header = aax_read_header,

396 .read_packet = aax_read_packet,

397 .read_close = aax_read_close,

398 };

AAXSegment::start

int64_t start

Definition: aaxdec.c:38

AVCodecParameters::extradata

uint8_t * extradata

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

Definition: codec_par.h:69

const char * r

Definition: vf_curves.c:127

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:39

COLUMN_TYPE_DOUBLE

@ COLUMN_TYPE_DOUBLE

Definition: aaxdec.c:93

AVCodecParameters::codec_type

enum AVMediaType codec_type

General type of the encoded data.

Definition: codec_par.h:51

AVCodecParameters

This struct describes the properties of an encoded stream.

Definition: codec_par.h:47

AAXContext::segments

AAXSegment * segments

Definition: aaxdec.c:59

avformat_new_stream

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

Add a new stream to a media file.

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

AVERROR_EOF

#define AVERROR_EOF

End of file.

Definition: error.h:57

COLUMN_TYPE_UNDEFINED

@ COLUMN_TYPE_UNDEFINED

Definition: aaxdec.c:97

int64_t

long long int64_t

Definition: coverity.c:34

AVPacket::duration

int64_t duration

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

Definition: packet.h:557

aax_probe

static int aax_probe(const AVProbeData *p)

Definition: aaxdec.c:62

AVChannelLayout::nb_channels

int nb_channels

Number of channels in this layout.

Definition: channel_layout.h:321

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:335

AVPROBE_SCORE_MAX

#define AVPROBE_SCORE_MAX

maximum score

Definition: avformat.h:463

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:860

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: packet.c:197

COLUMN_TYPE_UINT128

@ COLUMN_TYPE_UINT128

Definition: aaxdec.c:96

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:494

AVFMT_GENERIC_INDEX

#define AVFMT_GENERIC_INDEX

Use generic index building code.

Definition: avformat.h:480

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:644

COLUMN_TYPE_SINT32

@ COLUMN_TYPE_SINT32

Definition: aaxdec.c:89

aax_read_packet

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

Definition: aaxdec.c:305

AAXContext::columns

uint16_t columns

Definition: aaxdec.c:49

AAXContext::string_table

char * string_table

Definition: aaxdec.c:54

aax_read_close

static int aax_read_close(AVFormatContext *s)

Definition: aaxdec.c:376

avio_rb32

unsigned int avio_rb32(AVIOContext *s)

Definition: aviobuf.c:761

pkt

AVPacket * pkt

Definition: movenc.c:60

AAXColumn

Definition: aaxdec.c:29

read_packet

static int read_packet(void *opaque, uint8_t *buf, int buf_size)

Definition: avio_read_callback.c:42

intreadwrite.h

#define s(width, name)

Definition: cbs_vp9.c:198

AVInputFormat::name

const char * name

A comma separated list of short names for the format.

Definition: avformat.h:553

AVProbeData::buf

unsigned char * buf

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

Definition: avformat.h:453

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:87

AAXContext::current_segment

uint32_t current_segment

Definition: aaxdec.c:56

FF_INFMT_FLAG_INIT_CLEANUP

#define FF_INFMT_FLAG_INIT_CLEANUP

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

Definition: demux.h:35

AVFormatContext

Format I/O context.

Definition: avformat.h:1287

internal.h

read_header

static int read_header(FFV1Context *f)

Definition: ffv1dec.c:535

get_pts

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

Definition: aaxdec.c:100

NULL

#define NULL

Definition: coverity.c:32

COLUMN_TYPE_SINT64

@ COLUMN_TYPE_SINT64

Definition: aaxdec.c:91

AVProbeData

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

Definition: avformat.h:451

AAXColumn::name

const char * name

Definition: aaxdec.c:32

COLUMN_FLAG_DEFAULT

@ COLUMN_FLAG_DEFAULT

Definition: aaxdec.c:78

COLUMN_TYPE_UINT8

@ COLUMN_TYPE_UINT8

Definition: aaxdec.c:84

AVCodecParameters::ch_layout

AVChannelLayout ch_layout

Audio only.

Definition: codec_par.h:180

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:184

COLUMN_TYPE_UINT64

@ COLUMN_TYPE_UINT64

Definition: aaxdec.c:90

AAXContext::table_size

int64_t table_size

Definition: aaxdec.c:43

AVIOContext

Bytestream IO Context.

Definition: avio.h:160

AV_CODEC_ID_ADPCM_ADX

@ AV_CODEC_ID_ADPCM_ADX

Definition: codec_id.h:376

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:94

ColumnFlag

Definition: aaxdec.c:76

COLUMN_FLAG_ROW

@ COLUMN_FLAG_ROW

Definition: aaxdec.c:79

size

int size

Definition: twinvq_data.h:10344

AAXContext::rows_offset

int64_t rows_offset

Definition: aaxdec.c:45

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

ff_aax_demuxer

const FFInputFormat ff_aax_demuxer

Definition: aaxdec.c:387

COLUMN_TYPE_VLDATA

@ COLUMN_TYPE_VLDATA

Definition: aaxdec.c:95

AAXContext::strings_offset

int64_t strings_offset

Definition: aaxdec.c:46

FFInputFormat::p

AVInputFormat p

The public AVInputFormat.

Definition: demux.h:41

avio_r8

int avio_r8(AVIOContext *s)

Definition: aviobuf.c:603

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:47

AAXContext::name_offset

int64_t name_offset

Definition: aaxdec.c:48

AAXSegment

Definition: aaxdec.c:37

flag

#define flag(name)

Definition: cbs_av1.c:474

AVPacket::pts

int64_t pts

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

Definition: packet.h:532

avio_internal.h

AAXColumn::type

uint8_t type

Definition: aaxdec.c:31

COLUMN_FLAG_UNDEFINED

@ COLUMN_FLAG_UNDEFINED

Definition: aaxdec.c:80

COLUMN_TYPE_STRING

@ COLUMN_TYPE_STRING

Definition: aaxdec.c:94

demux.h

av_calloc

void * av_calloc(size_t nmemb, size_t size)

Definition: mem.c:264

AAXContext::schema_offset

int64_t schema_offset

Definition: aaxdec.c:52

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:91

AAXColumn::size

int size

Definition: aaxdec.c:34

ret

Definition: filter_design.txt:187

AVStream

Stream structure.

Definition: avformat.h:748

avio_seek

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

fseek() equivalent for AVIOContext.

Definition: aviobuf.c:231

avio_rb16

unsigned int avio_rb16(AVIOContext *s)

Definition: aviobuf.c:746

COLUMN_TYPE_FLOAT

@ COLUMN_TYPE_FLOAT

Definition: aaxdec.c:92

pos

unsigned int pos

Definition: spdifenc.c:414

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:30

COLUMN_TYPE_SINT8

@ COLUMN_TYPE_SINT8

Definition: aaxdec.c:85

AAXContext::strings_size

int64_t strings_size

Definition: aaxdec.c:53

aax_read_header

static int aax_read_header(AVFormatContext *s)

Definition: aaxdec.c:113

COLUMN_TYPE_UINT16

@ COLUMN_TYPE_UINT16

Definition: aaxdec.c:86

avio_read

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

Read size bytes from AVIOContext into buf.

Definition: aviobuf.c:612

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:541

AAXContext

Definition: aaxdec.c:42

avio_skip

int64_t avio_skip(AVIOContext *s, int64_t offset)

Skip given number of bytes forward.

Definition: aviobuf.c:318

AAXContext::row_width

uint16_t row_width

Definition: aaxdec.c:50

AAXContext::version

uint16_t version

Definition: aaxdec.c:44

read_probe

static int read_probe(const AVProbeData *p)

Definition: cdg.c:30

COLUMN_TYPE_UINT32

@ COLUMN_TYPE_UINT32

Definition: aaxdec.c:88

mem.h

ColumnType

Definition: aaxdec.c:83

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:55

AVPacket

This structure stores compressed data.

Definition: packet.h:516

AAXContext::nb_segments

uint32_t nb_segments

Definition: aaxdec.c:51

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:559

FFInputFormat

Definition: demux.h:37

COLUMN_FLAG_NAME

@ COLUMN_FLAG_NAME

Definition: aaxdec.c:77

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:662

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:797

skip

static void BS_FUNC() skip(BSCTX *bc, unsigned int n)

Skip n bits in the buffer.

Definition: bitstream_template.h:375

AAXColumn::offset

uint32_t offset

Definition: aaxdec.c:33

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:58

avio_feof

int avio_feof(AVIOContext *s)

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

Definition: aviobuf.c:346

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