FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/asfdec_f.c
Date: 2026-04-23 02:20:26
Exec Total Coverage
Lines: 683 909 75.1%
Functions: 21 22 95.5%
Branches: 318 552 57.6%
Line Branch Exec Source
1 /*
2 * ASF compatible demuxer
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <inttypes.h>
23
24 #include "libavutil/attributes.h"
25 #include "libavutil/avassert.h"
26 #include "libavutil/avstring.h"
27 #include "libavutil/bswap.h"
28 #include "libavutil/common.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/opt.h"
34 #include "avformat.h"
35 #include "avio_internal.h"
36 #include "avlanguage.h"
37 #include "demux.h"
38 #include "internal.h"
39 #include "riff.h"
40 #include "asf.h"
41 #include "asfcrypt.h"
42
43 typedef struct ASFPayload {
44 uint8_t type;
45 uint16_t size;
46 } ASFPayload;
47
48 typedef struct ASFStream {
49 int num;
50 unsigned char seq;
51 /* use for reading */
52 AVPacket pkt;
53 int frag_offset;
54 int packet_obj_size;
55 int timestamp;
56 int64_t duration;
57 int skip_to_key;
58 int pkt_clean;
59
60 int ds_span; /* descrambling */
61 int ds_packet_size;
62 int ds_chunk_size;
63
64 int64_t packet_pos;
65
66 uint16_t stream_language_index;
67
68 int palette_changed;
69 uint32_t palette[256];
70
71 int payload_ext_ct;
72 ASFPayload payload[8];
73 } ASFStream;
74
75 typedef struct ASFContext {
76 const AVClass *class;
77 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
78 ASFStream streams[128]; ///< it's max number and it's not that big
79 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
80 AVRational dar[128];
81 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
82 /* non streamed additonnal info */
83 /* packet filling */
84 int packet_size_left;
85 /* only for reading */
86 uint64_t data_offset; ///< beginning of the first data packet
87 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
88 uint64_t data_object_size; ///< size of the data object
89 int index_read;
90
91 ASFMainHeader hdr;
92
93 int packet_flags;
94 int packet_property;
95 int packet_timestamp;
96 int packet_segsizetype;
97 int packet_segments;
98 int packet_seq;
99 int packet_replic_size;
100 int packet_key_frame;
101 int packet_padsize;
102 unsigned int packet_frag_offset;
103 unsigned int packet_frag_size;
104 int64_t packet_frag_timestamp;
105 int ts_is_pts;
106 int packet_multi_size;
107 int packet_time_delta;
108 int64_t packet_time_start;
109 int64_t packet_pos;
110
111 int stream_index;
112
113 ASFStream *asf_st; ///< currently decoded stream
114
115 int no_resync_search;
116 int export_xmp;
117
118 int uses_std_ecc;
119 } ASFContext;
120
121 static const AVOption options[] = {
122 { "no_resync_search", "Don't try to resynchronize by looking for a certain optional start code", offsetof(ASFContext, no_resync_search), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
123 { "export_xmp", "Export full XMP metadata", offsetof(ASFContext, export_xmp), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
124 { NULL },
125 };
126
127 static const AVClass asf_class = {
128 .class_name = "asf demuxer",
129 .item_name = av_default_item_name,
130 .option = options,
131 .version = LIBAVUTIL_VERSION_INT,
132 };
133
134 #undef NDEBUG
135 #include <assert.h>
136
137 #define ASF_MAX_STREAMS 127
138 #define FRAME_HEADER_SIZE 6
139 // Fix Me! FRAME_HEADER_SIZE may be different.
140 // (7 is known to be too large for GipsyGuitar.wmv)
141
142 #ifdef DEBUG
143 static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
144 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
145 };
146
147 static const ff_asf_guid asf_audio_conceal_none = {
148 // 0x40, 0xa4, 0xf1, 0x49, 0x4ece, 0x11d0, 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6
149 // New value lifted from avifile
150 0x00, 0x57, 0xfb, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b
151 };
152
153 #define PRINT_IF_GUID(g, cmp) \
154 if (!ff_guidcmp(g, &(cmp))) \
155 av_log(NULL, AV_LOG_TRACE, "(GUID: %s) ", # cmp)
156
157 static void print_guid(ff_asf_guid *g)
158 {
159 int i;
160 PRINT_IF_GUID(g, ff_asf_header);
161 else PRINT_IF_GUID(g, ff_asf_file_header);
162 else PRINT_IF_GUID(g, ff_asf_stream_header);
163 else PRINT_IF_GUID(g, ff_asf_audio_stream);
164 else PRINT_IF_GUID(g, asf_audio_conceal_none);
165 else PRINT_IF_GUID(g, ff_asf_video_stream);
166 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
167 else PRINT_IF_GUID(g, ff_asf_command_stream);
168 else PRINT_IF_GUID(g, ff_asf_comment_header);
169 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
170 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
171 else PRINT_IF_GUID(g, ff_asf_data_header);
172 else PRINT_IF_GUID(g, ff_asf_simple_index_header);
173 else PRINT_IF_GUID(g, ff_asf_head1_guid);
174 else PRINT_IF_GUID(g, ff_asf_head2_guid);
175 else PRINT_IF_GUID(g, ff_asf_my_guid);
176 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
177 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
178 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
179 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
180 else PRINT_IF_GUID(g, ff_asf_metadata_header);
181 else PRINT_IF_GUID(g, ff_asf_metadata_library_header);
182 else PRINT_IF_GUID(g, ff_asf_marker_header);
183 else PRINT_IF_GUID(g, stream_bitrate_guid);
184 else PRINT_IF_GUID(g, ff_asf_language_guid);
185 else
186 av_log(NULL, AV_LOG_TRACE, "(GUID: unknown) ");
187 for (i = 0; i < 16; i++)
188 av_log(NULL, AV_LOG_TRACE, " 0x%02x,", (*g)[i]);
189 av_log(NULL, AV_LOG_TRACE, "}\n");
190 }
191 #undef PRINT_IF_GUID
192 #else
193 #define print_guid(g) while(0)
194 #endif
195
196 7474 static int asf_probe(const AVProbeData *pd)
197 {
198 /* check file header */
199
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 7474 if (!ff_guidcmp(pd->buf, &ff_asf_header))
200 33 return AVPROBE_SCORE_MAX;
201 else
202 7441 return 0;
203 }
204
205 /* size of type 2 (BOOL) is 32bit for "Extended Content Description Object"
206 * but 16 bit for "Metadata Object" and "Metadata Library Object" */
207 101 static int get_value(AVIOContext *pb, int type, int type2_size)
208 {
209
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 101 switch (type) {
210 52 case ASF_BOOL:
211
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 52 return (type2_size == 32) ? avio_rl32(pb) : avio_rl16(pb);
212 46 case ASF_DWORD:
213 46 return avio_rl32(pb);
214 3 case ASF_QWORD:
215 3 return avio_rl64(pb);
216 ✗ case ASF_WORD:
217 ✗ return avio_rl16(pb);
218 ✗ default:
219 ✗ return INT_MIN;
220 }
221 }
222
223 323 static void get_tag(AVFormatContext *s, const char *key, int type, int len, int type2_size)
224 {
225 323 ASFContext *asf = s->priv_data;
226 323 char *value = NULL;
227 323 int64_t off = avio_tell(s->pb);
228 #define LEN 22
229
230
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 323 av_assert0((unsigned)len < (INT_MAX - LEN) / 2);
231
232
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 323 if (!asf->export_xmp && !strncmp(key, "xmp", 3))
233 ✗ goto finish;
234
235 323 value = av_malloc(2 * len + LEN);
236
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 323 if (!value)
237 ✗ goto finish;
238
239
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 323 switch (type) {
240 195 case ASF_UNICODE:
241 195 avio_get_str16le(s->pb, len, value, 2 * len + 1);
242 195 break;
243 3 case -1:; // ASCII
244 3 int ret = ffio_read_size(s->pb, value, len);
245
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 3 if (ret < 0)
246 ✗ goto finish;
247 3 value[len]=0;
248 3 break;
249 16 case ASF_BYTE_ARRAY:
250
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 16 if (ff_asf_handle_byte_array(s, key, len) > 0)
251 12 av_log(s, AV_LOG_VERBOSE, "Unsupported byte array in tag %s.\n", key);
252 16 goto finish;
253 99 case ASF_BOOL:
254 case ASF_DWORD:
255 case ASF_QWORD:
256 case ASF_WORD: {
257 99 uint64_t num = get_value(s->pb, type, type2_size);
258 99 snprintf(value, LEN, "%"PRIu64, num);
259 99 break;
260 }
261 10 case ASF_GUID:
262 10 av_log(s, AV_LOG_DEBUG, "Unsupported GUID value in tag %s.\n", key);
263 10 goto finish;
264 ✗ default:
265 ✗ av_log(s, AV_LOG_DEBUG,
266 "Unsupported value type %d in tag %s.\n", type, key);
267 ✗ goto finish;
268 }
269
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 297 if (*value)
270 256 av_dict_set(&s->metadata, key, value, 0);
271
272 41 finish:
273 323 av_freep(&value);
274 323 avio_seek(s->pb, off + len, SEEK_SET);
275 323 }
276
277 33 static int asf_read_file_properties(AVFormatContext *s)
278 {
279 33 ASFContext *asf = s->priv_data;
280 33 AVIOContext *pb = s->pb;
281
282 33 ff_get_guid(pb, &asf->hdr.guid);
283 33 asf->hdr.file_size = avio_rl64(pb);
284 33 asf->hdr.create_time = avio_rl64(pb);
285 33 avio_rl64(pb); /* number of packets */
286 33 asf->hdr.play_time = avio_rl64(pb);
287 33 asf->hdr.send_time = avio_rl64(pb);
288 33 asf->hdr.preroll = avio_rl32(pb);
289 33 asf->hdr.ignore = avio_rl32(pb);
290 33 asf->hdr.flags = avio_rl32(pb);
291 33 asf->hdr.min_pktsize = avio_rl32(pb);
292 33 asf->hdr.max_pktsize = avio_rl32(pb);
293
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 33 if (asf->hdr.min_pktsize >= (1U << 29))
294 ✗ return AVERROR_INVALIDDATA;
295 33 asf->hdr.max_bitrate = avio_rl32(pb);
296 33 s->packet_size = asf->hdr.max_pktsize;
297
298 33 return 0;
299 }
300
301 44 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
302 {
303 44 ASFContext *asf = s->priv_data;
304 44 AVIOContext *pb = s->pb;
305 AVStream *st;
306 FFStream *sti;
307 ASFStream *asf_st;
308 ff_asf_guid g;
309 enum AVMediaType type;
310 int type_specific_size, sizeX;
311 unsigned int tag1;
312 int64_t pos1, pos2, start_time;
313 44 int test_for_ext_stream_audio, is_dvr_ms_audio = 0;
314
315
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 44 if (s->nb_streams == ASF_MAX_STREAMS) {
316 ✗ av_log(s, AV_LOG_ERROR, "too many streams\n");
317 ✗ return AVERROR(EINVAL);
318 }
319
320 44 pos1 = avio_tell(pb);
321
322 44 st = avformat_new_stream(s, NULL);
323
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 44 if (!st)
324 ✗ return AVERROR(ENOMEM);
325 44 sti = ffstream(st);
326 44 avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
327 44 start_time = asf->hdr.preroll;
328
329
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 44 if (!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
330 44 int64_t fsize = avio_size(pb);
331
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 44 if (fsize <= 0 || (int64_t)asf->hdr.file_size <= 0 ||
332
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 44 FFABS(fsize - (int64_t)asf->hdr.file_size) < FFMIN(fsize, asf->hdr.file_size)/20)
333 27 st->duration = asf->hdr.play_time /
334 27 (10000000 / 1000) - start_time;
335 }
336 44 ff_get_guid(pb, &g);
337
338 44 test_for_ext_stream_audio = 0;
339
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 44 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
340 24 type = AVMEDIA_TYPE_AUDIO;
341
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 20 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
342 19 type = AVMEDIA_TYPE_VIDEO;
343
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 1 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
344 ✗ type = AVMEDIA_TYPE_VIDEO;
345 ✗ st->codecpar->codec_id = AV_CODEC_ID_MJPEG;
346
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 1 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
347 1 type = AVMEDIA_TYPE_DATA;
348 ✗ } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
349 ✗ test_for_ext_stream_audio = 1;
350 ✗ type = AVMEDIA_TYPE_UNKNOWN;
351 } else {
352 ✗ return -1;
353 }
354 44 ff_get_guid(pb, &g);
355 44 avio_skip(pb, 8); /* total_size */
356 44 type_specific_size = avio_rl32(pb);
357 44 avio_rl32(pb);
358 44 st->id = avio_rl16(pb) & 0x7f; /* stream id */
359 // mapping of asf ID to AV stream ID;
360 44 asf->asfid2avid[st->id] = s->nb_streams - 1;
361 44 asf_st = &asf->streams[st->id];
362
363 44 avio_rl32(pb);
364
365
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 44 if (test_for_ext_stream_audio) {
366 ✗ ff_get_guid(pb, &g);
367 ✗ if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
368 ✗ type = AVMEDIA_TYPE_AUDIO;
369 ✗ is_dvr_ms_audio = 1;
370 ✗ ff_get_guid(pb, &g);
371 ✗ avio_rl32(pb);
372 ✗ avio_rl32(pb);
373 ✗ avio_rl32(pb);
374 ✗ ff_get_guid(pb, &g);
375 ✗ avio_rl32(pb);
376 }
377 }
378
379 44 st->codecpar->codec_type = type;
380
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 44 if (type == AVMEDIA_TYPE_AUDIO) {
381 24 int ret = ff_get_wav_header(s, pb, st->codecpar, type_specific_size, 0);
382
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 24 if (ret < 0)
383 ✗ return ret;
384
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 24 if (is_dvr_ms_audio) {
385 // codec_id and codec_tag are unreliable in dvr_ms
386 // files. Set them later by probing stream.
387 ✗ sti->request_probe = 1;
388 ✗ st->codecpar->codec_tag = 0;
389 }
390
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 24 if (st->codecpar->codec_id == AV_CODEC_ID_AAC)
391 ✗ sti->need_parsing = AVSTREAM_PARSE_NONE;
392 else
393 24 sti->need_parsing = AVSTREAM_PARSE_FULL;
394 /* We have to init the frame size at some point .... */
395 24 pos2 = avio_tell(pb);
396
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 24 if (size >= (pos2 + 8 - pos1 + 24)) {
397 24 asf_st->ds_span = avio_r8(pb);
398 24 asf_st->ds_packet_size = avio_rl16(pb);
399 24 asf_st->ds_chunk_size = avio_rl16(pb);
400 24 avio_rl16(pb); // ds_data_size
401 24 avio_r8(pb); // ds_silence_data
402 }
403
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 24 if (asf_st->ds_span > 1) {
404
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 1 if (!asf_st->ds_chunk_size ||
405
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 1 (asf_st->ds_packet_size / asf_st->ds_chunk_size <= 1) ||
406 ✗ asf_st->ds_packet_size % asf_st->ds_chunk_size)
407 1 asf_st->ds_span = 0; // disable descrambling
408 }
409
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 20 } else if (type == AVMEDIA_TYPE_VIDEO &&
410
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 19 size - (avio_tell(pb) - pos1 + 24) >= 51) {
411 19 avio_rl32(pb);
412 19 avio_rl32(pb);
413 19 avio_r8(pb);
414 19 avio_rl16(pb); /* size */
415 19 sizeX = avio_rl32(pb); /* size */
416 19 st->codecpar->width = avio_rl32(pb);
417 19 st->codecpar->height = avio_rl32(pb);
418 /* not available for asf */
419 19 avio_rl16(pb); /* panes */
420 19 st->codecpar->bits_per_coded_sample = avio_rl16(pb); /* depth */
421 19 tag1 = avio_rl32(pb);
422 19 avio_skip(pb, 20);
423
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 19 if (sizeX > 40) {
424
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 10 if (size < sizeX - 40 || sizeX - 40 > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
425 ✗ return AVERROR_INVALIDDATA;
426 10 st->codecpar->extradata_size = ffio_limit(pb, sizeX - 40);
427 10 st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size +
428 AV_INPUT_BUFFER_PADDING_SIZE);
429
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 10 if (!st->codecpar->extradata)
430 ✗ return AVERROR(ENOMEM);
431 10 avio_read(pb, st->codecpar->extradata, st->codecpar->extradata_size);
432 }
433
434 /* Extract palette from extradata if bpp <= 8 */
435 /* This code assumes that extradata contains only palette */
436 /* This is true for all paletted codecs implemented in libavcodec */
437
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 19 if (st->codecpar->extradata_size && (st->codecpar->bits_per_coded_sample <= 8)) {
438 #if HAVE_BIGENDIAN
439 int i;
440 for (i = 0; i < FFMIN(st->codecpar->extradata_size, AVPALETTE_SIZE) / 4; i++)
441 asf_st->palette[i] = av_bswap32(((uint32_t *)st->codecpar->extradata)[i]);
442 #else
443 ✗ memcpy(asf_st->palette, st->codecpar->extradata,
444 ✗ FFMIN(st->codecpar->extradata_size, AVPALETTE_SIZE));
445 #endif
446 ✗ asf_st->palette_changed = 1;
447 }
448
449 19 st->codecpar->codec_tag = tag1;
450 19 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
451
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 19 if (!st->codecpar->codec_id)
452 ✗ st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags_unofficial, tag1);
453
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 19 if (tag1 == MKTAG('D', 'V', 'R', ' ')) {
454 ✗ sti->need_parsing = AVSTREAM_PARSE_FULL;
455 /* issue658 contains wrong w/h and MS even puts a fake seq header
456 * with wrong w/h in extradata while a correct one is in the stream.
457 * maximum lameness */
458 ✗ st->codecpar->width =
459 ✗ st->codecpar->height = 0;
460 ✗ av_freep(&st->codecpar->extradata);
461 ✗ st->codecpar->extradata_size = 0;
462 }
463
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 19 if (st->codecpar->codec_id == AV_CODEC_ID_H264)
464 ✗ sti->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
465
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 19 if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4)
466 ✗ sti->need_parsing = AVSTREAM_PARSE_FULL;
467
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 19 if (st->codecpar->codec_id == AV_CODEC_ID_HEVC)
468 ✗ sti->need_parsing = AVSTREAM_PARSE_FULL;
469 }
470 44 pos2 = avio_tell(pb);
471 44 avio_skip(pb, size - (pos2 - pos1 + 24));
472
473 44 return 0;
474 }
475
476 31 static int asf_read_ext_stream_properties(AVFormatContext *s)
477 {
478 31 ASFContext *asf = s->priv_data;
479 31 AVIOContext *pb = s->pb;
480 ff_asf_guid g;
481 int ext_len, payload_ext_ct, stream_ct, i;
482 uint32_t leak_rate, stream_num;
483 unsigned int stream_languageid_index;
484
485 31 avio_rl64(pb); // starttime
486 31 avio_rl64(pb); // endtime
487 31 leak_rate = avio_rl32(pb); // leak-datarate
488 31 avio_rl32(pb); // bucket-datasize
489 31 avio_rl32(pb); // init-bucket-fullness
490 31 avio_rl32(pb); // alt-leak-datarate
491 31 avio_rl32(pb); // alt-bucket-datasize
492 31 avio_rl32(pb); // alt-init-bucket-fullness
493 31 avio_rl32(pb); // max-object-size
494 31 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
495 31 stream_num = avio_rl16(pb); // stream-num
496
497 31 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
498
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 31 if (stream_num < 128)
499 31 asf->streams[stream_num].stream_language_index = stream_languageid_index;
500
501 31 avio_rl64(pb); // avg frametime in 100ns units
502 31 stream_ct = avio_rl16(pb); // stream-name-count
503 31 payload_ext_ct = avio_rl16(pb); // payload-extension-system-count
504
505
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 31 if (stream_num < 128) {
506 31 asf->stream_bitrates[stream_num] = leak_rate;
507 31 asf->streams[stream_num].payload_ext_ct = 0;
508 }
509
510
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 31 for (i = 0; i < stream_ct; i++) {
511 ✗ avio_rl16(pb);
512 ✗ ext_len = avio_rl16(pb);
513 ✗ avio_skip(pb, ext_len);
514 }
515
516
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 44 for (i = 0; i < payload_ext_ct; i++) {
517 int size;
518 13 ff_get_guid(pb, &g);
519 13 size = avio_rl16(pb);
520 13 ext_len = avio_rl32(pb);
521
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 13 if (ext_len < 0)
522 ✗ return AVERROR_INVALIDDATA;
523 13 avio_skip(pb, ext_len);
524
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 13 if (stream_num < 128 && i < FF_ARRAY_ELEMS(asf->streams[stream_num].payload)) {
525 13 ASFPayload *p = &asf->streams[stream_num].payload[i];
526 13 p->type = g[0];
527 13 p->size = size;
528 13 av_log(s, AV_LOG_DEBUG, "Payload extension %x %d\n", g[0], p->size );
529 13 asf->streams[stream_num].payload_ext_ct ++;
530 }
531 }
532
533 31 return 0;
534 }
535
536 17 static int asf_read_content_desc(AVFormatContext *s)
537 {
538 17 AVIOContext *pb = s->pb;
539 int len1, len2, len3, len4, len5;
540
541 17 len1 = avio_rl16(pb);
542 17 len2 = avio_rl16(pb);
543 17 len3 = avio_rl16(pb);
544 17 len4 = avio_rl16(pb);
545 17 len5 = avio_rl16(pb);
546 17 get_tag(s, "title", 0, len1, 32);
547 17 get_tag(s, "author", 0, len2, 32);
548 17 get_tag(s, "copyright", 0, len3, 32);
549 17 get_tag(s, "comment", 0, len4, 32);
550 17 avio_skip(pb, len5);
551
552 17 return 0;
553 }
554
555 33 static int asf_read_ext_content_desc(AVFormatContext *s)
556 {
557 33 AVIOContext *pb = s->pb;
558 33 ASFContext *asf = s->priv_data;
559 int desc_count, i, ret;
560
561 33 desc_count = avio_rl16(pb);
562
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 183 for (i = 0; i < desc_count; i++) {
563 int name_len, value_type, value_len;
564 char name[1024];
565
566 150 name_len = avio_rl16(pb);
567
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 150 if (name_len % 2) // must be even, broken lavf versions wrote len-1
568 ✗ name_len += 1;
569
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 150 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
570 ✗ avio_skip(pb, name_len - ret);
571 150 value_type = avio_rl16(pb);
572 150 value_len = avio_rl16(pb);
573
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 150 if (!value_type && value_len % 2)
574 ✗ value_len += 1;
575 /* My sample has that stream set to 0 maybe that mean the container.
576 * ASF stream count starts at 1. I am using 0 to the container value
577 * since it's unused. */
578
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 150 if (!strcmp(name, "AspectRatioX"))
579 ✗ asf->dar[0].num = get_value(s->pb, value_type, 32);
580
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 150 else if (!strcmp(name, "AspectRatioY"))
581 ✗ asf->dar[0].den = get_value(s->pb, value_type, 32);
582 else
583 150 get_tag(s, name, value_type, value_len, 32);
584 }
585
586 33 return 0;
587 }
588
589 24 static int asf_read_language_list(AVFormatContext *s)
590 {
591 24 AVIOContext *pb = s->pb;
592 24 ASFContext *asf = s->priv_data;
593 int j, ret;
594 24 int stream_count = avio_rl16(pb);
595
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 50 for (j = 0; j < stream_count; j++) {
596 char lang[6];
597 26 unsigned int lang_len = avio_r8(pb);
598
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 26 if ((ret = avio_get_str16le(pb, lang_len, lang,
599 sizeof(lang))) < lang_len)
600 4 avio_skip(pb, lang_len - ret);
601
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 26 if (j < 128)
602 26 av_strlcpy(asf->stream_languages[j], lang,
603 sizeof(*asf->stream_languages));
604 }
605
606 24 return 0;
607 }
608
609 26 static int asf_read_metadata(AVFormatContext *s)
610 {
611 26 AVIOContext *pb = s->pb;
612 26 ASFContext *asf = s->priv_data;
613 int n, stream_num, name_len_utf16, name_len_utf8;
614 unsigned int value_len;
615 int ret, i;
616 26 n = avio_rl16(pb);
617
618
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 130 for (i = 0; i < n; i++) {
619 uint8_t *name;
620 int value_type;
621
622 104 avio_rl16(pb); // lang_list_index
623 104 stream_num = avio_rl16(pb);
624 104 name_len_utf16 = avio_rl16(pb);
625 104 value_type = avio_rl16(pb); /* value_type */
626 104 value_len = avio_rl32(pb);
627
628
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 104 if (value_len >= (INT_MAX - LEN) / 2)
629 ✗ return AVERROR_INVALIDDATA;
630
631 104 name_len_utf8 = 2*name_len_utf16 + 1;
632 104 name = av_malloc(name_len_utf8);
633
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 104 if (!name)
634 ✗ return AVERROR(ENOMEM);
635
636
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 104 if ((ret = avio_get_str16le(pb, name_len_utf16, name, name_len_utf8)) < name_len_utf16)
637 ✗ avio_skip(pb, name_len_utf16 - ret);
638 104 av_log(s, AV_LOG_TRACE, "%d stream %d name_len %2d type %d len %4d <%s>\n",
639 i, stream_num, name_len_utf16, value_type, value_len, name);
640
641
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 104 if (!strcmp(name, "AspectRatioX")){
642 1 int aspect_x = get_value(s->pb, value_type, 16);
643
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 1 if(stream_num < 128)
644 1 asf->dar[stream_num].num = aspect_x;
645
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 103 } else if(!strcmp(name, "AspectRatioY")){
646 1 int aspect_y = get_value(s->pb, value_type, 16);
647
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 1 if(stream_num < 128)
648 1 asf->dar[stream_num].den = aspect_y;
649 } else {
650 102 get_tag(s, name, value_type, value_len, 16);
651 }
652 104 av_freep(&name);
653 }
654
655 26 return 0;
656 }
657
658 ✗ static int asf_read_marker(AVFormatContext *s)
659 {
660 ✗ AVIOContext *pb = s->pb;
661 ✗ ASFContext *asf = s->priv_data;
662 int i, count, name_len, ret;
663 char name[1024];
664
665 ✗ avio_rl64(pb); // reserved 16 bytes
666 ✗ avio_rl64(pb); // ...
667 ✗ count = avio_rl32(pb); // markers count
668 ✗ avio_rl16(pb); // reserved 2 bytes
669 ✗ name_len = avio_rl16(pb); // name length
670 ✗ avio_skip(pb, name_len);
671
672 ✗ for (i = 0; i < count; i++) {
673 int64_t pres_time;
674
675 ✗ if (avio_feof(pb))
676 ✗ return AVERROR_INVALIDDATA;
677
678 ✗ avio_rl64(pb); // offset, 8 bytes
679 ✗ pres_time = avio_rl64(pb); // presentation time
680 ✗ pres_time = av_sat_sub64(pres_time, asf->hdr.preroll * 10000LL);
681 ✗ avio_rl16(pb); // entry length
682 ✗ avio_rl32(pb); // send time
683 ✗ avio_rl32(pb); // flags
684 ✗ name_len = avio_rl32(pb); // name length
685 ✗ if ((unsigned)name_len > INT_MAX / 2)
686 ✗ return AVERROR_INVALIDDATA;
687 ✗ if ((ret = avio_get_str16le(pb, name_len * 2, name,
688 sizeof(name))) < name_len)
689 ✗ avio_skip(pb, name_len - ret);
690 ✗ avpriv_new_chapter(s, i, (AVRational) { 1, 10000000 }, pres_time,
691 AV_NOPTS_VALUE, name);
692 }
693
694 ✗ return 0;
695 }
696
697 33 static int asf_read_header(AVFormatContext *s)
698 {
699 33 ASFContext *asf = s->priv_data;
700 ff_asf_guid g;
701 33 AVIOContext *pb = s->pb;
702 int i;
703 int64_t gsize;
704
705 33 ff_get_guid(pb, &g);
706
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 33 if (ff_guidcmp(&g, &ff_asf_header))
707 ✗ return AVERROR_INVALIDDATA;
708 33 avio_rl64(pb);
709 33 avio_rl32(pb);
710 33 avio_r8(pb);
711 33 avio_r8(pb);
712 33 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
713
714
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 4257 for (i = 0; i<128; i++)
715 4224 asf->streams[i].stream_language_index = 128; // invalid stream index means no language info
716
717 379 for (;;) {
718 412 uint64_t gpos = avio_tell(pb);
719 412 int ret = 0;
720 412 ff_get_guid(pb, &g);
721 412 gsize = avio_rl64(pb);
722 412 print_guid(&g);
723
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 412 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
724 33 asf->data_object_offset = avio_tell(pb);
725 /* If not streaming, gsize is not unlimited (how?),
726 * and there is enough space in the file.. */
727
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 33 if (!(asf->hdr.flags & 0x01) && gsize >= 100)
728 33 asf->data_object_size = gsize - 24;
729 else
730 ✗ asf->data_object_size = (uint64_t)-1;
731 33 break;
732 }
733
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 379 if (gsize < 24)
734 ✗ return AVERROR_INVALIDDATA;
735
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 379 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
736 33 ret = asf_read_file_properties(s);
737
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 346 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
738 44 ret = asf_read_stream_properties(s, gsize);
739
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 302 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
740 17 asf_read_content_desc(s);
741
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 285 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
742 24 asf_read_language_list(s);
743
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 261 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
744 33 asf_read_ext_content_desc(s);
745
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 228 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
746 23 asf_read_metadata(s);
747
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 205 } else if (!ff_guidcmp(&g, &ff_asf_metadata_library_header)) {
748 3 asf_read_metadata(s);
749
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 202 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
750 31 asf_read_ext_stream_properties(s);
751
752 // there could be an optional stream properties object to follow
753 // if so the next iteration will pick it up
754 31 continue;
755
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 171 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
756 33 ff_get_guid(pb, &g);
757 33 avio_skip(pb, 6);
758 33 continue;
759
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 138 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
760 ✗ asf_read_marker(s);
761
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 138 } else if (avio_feof(pb)) {
762 ✗ return AVERROR_EOF;
763 } else {
764
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 138 if (!s->keylen) {
765
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 122 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
766 1 AVPacket *const pkt = ffformatcontext(s)->parse_pkt;
767 unsigned int len;
768 1 av_log(s, AV_LOG_WARNING,
769 "DRM protected stream detected, decoding will likely fail!\n");
770 1 len= avio_rl32(pb);
771 1 av_log(s, AV_LOG_DEBUG, "Secret data:\n");
772
773
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 1 if ((ret = av_get_packet(pb, pkt, len)) < 0)
774 ✗ return ret;
775 1 av_hex_dump_log(s, AV_LOG_DEBUG, pkt->data, pkt->size);
776 1 av_packet_unref(pkt);
777
778 1 len= avio_rl32(pb);
779
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 1 if (len > UINT16_MAX)
780 ✗ return AVERROR_INVALIDDATA;
781 1 get_tag(s, "ASF_Protection_Type", -1, len, 32);
782
783 1 len= avio_rl32(pb);
784
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 1 if (len > UINT16_MAX)
785 ✗ return AVERROR_INVALIDDATA;
786 1 get_tag(s, "ASF_Key_ID", -1, len, 32);
787
788 1 len= avio_rl32(pb);
789
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 1 if (len > UINT16_MAX)
790 ✗ return AVERROR_INVALIDDATA;
791 1 get_tag(s, "ASF_License_URL", -1, len, 32);
792
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 121 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
793 ✗ av_log(s, AV_LOG_WARNING,
794 "Ext DRM protected stream detected, decoding will likely fail!\n");
795 ✗ av_dict_set(&s->metadata, "encryption", "ASF Extended Content Encryption", 0);
796
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 121 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
797 ✗ av_log(s, AV_LOG_INFO, "Digital signature detected!\n");
798 }
799 }
800 }
801
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 315 if (ret < 0)
802 ✗ return ret;
803
804
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 315 if (avio_tell(pb) != gpos + gsize)
805 137 av_log(s, AV_LOG_DEBUG,
806 "gpos mismatch our pos=%"PRIu64", end=%"PRId64"\n",
807 137 avio_tell(pb) - gpos, gsize);
808 315 avio_seek(pb, gpos + gsize, SEEK_SET);
809 }
810 33 ff_get_guid(pb, &g);
811 33 avio_rl64(pb);
812 33 avio_r8(pb);
813 33 avio_r8(pb);
814
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 33 if (avio_feof(pb))
815 ✗ return AVERROR_EOF;
816 33 asf->data_offset = avio_tell(pb);
817 33 asf->packet_size_left = 0;
818
819
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 4257 for (i = 0; i < 128; i++) {
820 4224 int stream_num = asf->asfid2avid[i];
821
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 4224 if (stream_num >= 0) {
822 44 AVStream *st = s->streams[stream_num];
823
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 44 if (!st->codecpar->bit_rate)
824 20 st->codecpar->bit_rate = asf->stream_bitrates[i];
825
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 44 if (asf->dar[i].num > 0 && asf->dar[i].den > 0) {
826 1 av_reduce(&st->sample_aspect_ratio.num,
827 &st->sample_aspect_ratio.den,
828 1 asf->dar[i].num, asf->dar[i].den, INT_MAX);
829
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 43 } else if ((asf->dar[0].num > 0) && (asf->dar[0].den > 0) &&
830 // Use ASF container value if the stream doesn't set AR.
831 ✗ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO))
832 ✗ av_reduce(&st->sample_aspect_ratio.num,
833 &st->sample_aspect_ratio.den,
834 ✗ asf->dar[0].num, asf->dar[0].den, INT_MAX);
835
836 44 av_log(s, AV_LOG_TRACE, "i=%d, st->codecpar->codec_type:%d, asf->dar %d:%d sar=%d:%d\n",
837 44 i, st->codecpar->codec_type, asf->dar[i].num, asf->dar[i].den,
838 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
839
840 // copy and convert language codes to the frontend
841
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 44 if (asf->streams[i].stream_language_index < 128) {
842 31 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
843
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 31 if (rfc1766 && strlen(rfc1766) > 1) {
844 27 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
845 27 const char *iso6392 = ff_convert_lang_to(primary_tag,
846 AV_LANG_ISO639_2_BIBL);
847
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 27 if (iso6392)
848 25 av_dict_set(&st->metadata, "language", iso6392, 0);
849 }
850 }
851 }
852 }
853
854 33 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
855
856 33 return 0;
857 }
858
859 #define DO_2BITS(bits, var, defval) \
860 switch (bits & 3) { \
861 case 3: \
862 var = avio_rl32(pb); \
863 rsize += 4; \
864 break; \
865 case 2: \
866 var = avio_rl16(pb); \
867 rsize += 2; \
868 break; \
869 case 1: \
870 var = avio_r8(pb); \
871 rsize++; \
872 break; \
873 default: \
874 var = defval; \
875 break; \
876 }
877
878 /**
879 * Load a single ASF packet into the demuxer.
880 * @param s demux context
881 * @param pb context to read data from
882 * @return 0 on success, <0 on error
883 */
884 1958 static int asf_get_packet(AVFormatContext *s, AVIOContext *pb)
885 {
886 1958 ASFContext *asf = s->priv_data;
887 uint32_t packet_length, padsize;
888 1958 int rsize = 8;
889 int c, d, e, off;
890
891
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 1958 if (asf->uses_std_ecc > 0) {
892 // if we do not know packet size, allow skipping up to 32 kB
893 1925 off = 32768;
894
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 1925 if (asf->no_resync_search)
895 ✗ off = 3;
896 // else if (s->packet_size > 0 && !asf->uses_std_ecc)
897 // off = (avio_tell(pb) - ffformatcontext(s)->data_offset) % s->packet_size + 3;
898
899 1925 c = d = e = -1;
900
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 5775 while (off-- > 0) {
901 5775 c = d;
902 5775 d = e;
903 5775 e = avio_r8(pb);
904
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 5775 if (c == 0x82 && !d && !e)
905 1925 break;
906 }
907
908
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 1925 if (c != 0x82) {
909 /* This code allows handling of -EAGAIN at packet boundaries (i.e.
910 * if the packet sync code above triggers -EAGAIN). This does not
911 * imply complete -EAGAIN handling support at random positions in
912 * the stream. */
913 ✗ if (pb->error == AVERROR(EAGAIN))
914 ✗ return AVERROR(EAGAIN);
915 ✗ if (!avio_feof(pb))
916 ✗ av_log(s, AV_LOG_ERROR,
917 "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
918 }
919
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 1925 if ((c & 0x8f) == 0x82) {
920
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 1925 if (d || e) {
921 ✗ if (!avio_feof(pb))
922 ✗ av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
923 ✗ return AVERROR_INVALIDDATA;
924 }
925 1925 c = avio_r8(pb);
926 1925 d = avio_r8(pb);
927 1925 rsize += 3;
928 ✗ } else if(!avio_feof(pb)) {
929 ✗ avio_seek(pb, -1, SEEK_CUR); // FIXME
930 }
931 } else {
932 33 c = avio_r8(pb);
933
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 33 if (c & 0x80) {
934 33 rsize ++;
935
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 33 if (!(c & 0x60)) {
936 33 d = avio_r8(pb);
937 33 e = avio_r8(pb);
938 33 avio_seek(pb, (c & 0xF) - 2, SEEK_CUR);
939 33 rsize += c & 0xF;
940 }
941
942
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 33 if (c != 0x82)
943 ✗ avpriv_request_sample(s, "Invalid ECC byte");
944
945
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 33 if (!asf->uses_std_ecc)
946
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 33 asf->uses_std_ecc = (c == 0x82 && !d && !e) ? 1 : -1;
947
948 33 c = avio_r8(pb);
949 } else
950 ✗ asf->uses_std_ecc = -1;
951 33 d = avio_r8(pb);
952 }
953
954 1958 asf->packet_flags = c;
955 1958 asf->packet_property = d;
956
957
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 1958 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
958
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 1958 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
959
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 1958 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
960
961 // the following checks prevent overflows and infinite loops
962
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 1958 if (!packet_length || packet_length >= (1U << 29)) {
963 ✗ av_log(s, AV_LOG_ERROR,
964 "invalid packet_length %"PRIu32" at:%"PRId64"\n",
965 packet_length, avio_tell(pb));
966 ✗ return AVERROR_INVALIDDATA;
967 }
968
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 1958 if (padsize >= packet_length) {
969 ✗ av_log(s, AV_LOG_ERROR,
970 "invalid padsize %"PRIu32" at:%"PRId64"\n", padsize, avio_tell(pb));
971 ✗ return AVERROR_INVALIDDATA;
972 }
973
974 1958 asf->packet_timestamp = avio_rl32(pb);
975 1958 avio_rl16(pb); /* duration */
976 // rsize has at least 11 bytes which have to be present
977
978
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 1958 if (asf->packet_flags & 0x01) {
979 939 asf->packet_segsizetype = avio_r8(pb);
980 939 rsize++;
981 939 asf->packet_segments = asf->packet_segsizetype & 0x3f;
982 } else {
983 1019 asf->packet_segments = 1;
984 1019 asf->packet_segsizetype = 0x80;
985 }
986
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 1958 if (rsize > packet_length - padsize) {
987 ✗ asf->packet_size_left = 0;
988 ✗ av_log(s, AV_LOG_ERROR,
989 "invalid packet header length %d for pktlen %"PRIu32"-%"PRIu32" at %"PRId64"\n",
990 rsize, packet_length, padsize, avio_tell(pb));
991 ✗ return AVERROR_INVALIDDATA;
992 }
993 1958 asf->packet_size_left = packet_length - padsize - rsize;
994
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 1958 if (packet_length < asf->hdr.min_pktsize)
995 ✗ padsize += asf->hdr.min_pktsize - packet_length;
996 1958 asf->packet_padsize = padsize;
997 1958 av_log(s, AV_LOG_TRACE, "packet: size=%d padsize=%d left=%d\n",
998 s->packet_size, asf->packet_padsize, asf->packet_size_left);
999 1958 return 0;
1000 }
1001
1002 /**
1003 *
1004 * @return <0 if error
1005 */
1006 3956 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb)
1007 {
1008 3956 ASFContext *asf = s->priv_data;
1009 ASFStream *asfst;
1010 3956 int rsize = 1;
1011 3956 int num = avio_r8(pb);
1012 int i;
1013 int64_t ts0, ts1 av_unused;
1014
1015 3956 asf->packet_segments--;
1016 3956 asf->packet_key_frame = num >> 7;
1017 3956 asf->stream_index = asf->asfid2avid[num & 0x7f];
1018 3956 asfst = &asf->streams[num & 0x7f];
1019 // sequence should be ignored!
1020
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 3956 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
1021
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 3956 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
1022
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 3956 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
1023 3956 av_log(asf, AV_LOG_TRACE, "key:%d stream:%d seq:%d offset:%d replic_size:%d num:%X packet_property %X\n",
1024 asf->packet_key_frame, asf->stream_index, asf->packet_seq,
1025 asf->packet_frag_offset, asf->packet_replic_size, num, asf->packet_property);
1026
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 3956 if (rsize+(int64_t)asf->packet_replic_size > asf->packet_size_left) {
1027 ✗ av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
1028 ✗ return AVERROR_INVALIDDATA;
1029 }
1030
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 3956 if (asf->packet_replic_size >= 8) {
1031 3826 int64_t end = avio_tell(pb) + asf->packet_replic_size;
1032 AVRational aspect;
1033 3826 asfst->packet_obj_size = avio_rl32(pb);
1034
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 3826 if (asfst->packet_obj_size >= (1 << 24) || asfst->packet_obj_size < 0) {
1035 ✗ av_log(s, AV_LOG_ERROR, "packet_obj_size %d invalid\n", asfst->packet_obj_size);
1036 ✗ asfst->packet_obj_size = 0;
1037 ✗ return AVERROR_INVALIDDATA;
1038 }
1039 3826 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
1040
1041
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 5152 for (i = 0; i < asfst->payload_ext_ct; i++) {
1042 1326 ASFPayload *p = &asfst->payload[i];
1043 1326 int size = p->size;
1044 int64_t payend;
1045
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 1326 if (size == 0xFFFF)
1046 ✗ size = avio_rl16(pb);
1047 1326 payend = avio_tell(pb) + size;
1048
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 1326 if (payend > end) {
1049 ✗ av_log(s, AV_LOG_ERROR, "too long payload\n");
1050 ✗ break;
1051 }
1052
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 1326 switch (p->type) {
1053 1142 case 0x50:
1054 // duration = avio_rl16(pb);
1055 1142 break;
1056 184 case 0x54:
1057 184 aspect.num = avio_r8(pb);
1058 184 aspect.den = avio_r8(pb);
1059
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 184 if (aspect.num > 0 && aspect.den > 0 && asf->stream_index >= 0) {
1060 184 s->streams[asf->stream_index]->sample_aspect_ratio = aspect;
1061 }
1062 184 break;
1063 ✗ case 0x2A:
1064 ✗ avio_skip(pb, 8);
1065 ✗ ts0 = avio_rl64(pb);
1066 ✗ ts1 = avio_rl64(pb);
1067 ✗ if (ts0!= -1) asf->packet_frag_timestamp = ts0/10000;
1068 ✗ else asf->packet_frag_timestamp = AV_NOPTS_VALUE;
1069 ✗ asf->ts_is_pts = 1;
1070 ✗ break;
1071 ✗ case 0x5B:
1072 case 0xB7:
1073 case 0xCC:
1074 case 0xC0:
1075 case 0xA0:
1076 //unknown
1077 ✗ break;
1078 }
1079 1326 avio_seek(pb, payend, SEEK_SET);
1080 }
1081
1082 3826 avio_seek(pb, end, SEEK_SET);
1083 3826 rsize += asf->packet_replic_size; // FIXME - check validity
1084
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 130 } else if (asf->packet_replic_size == 1) {
1085 // multipacket - frag_offset is beginning timestamp
1086 130 asf->packet_time_start = asf->packet_frag_offset;
1087 130 asf->packet_frag_offset = 0;
1088 130 asf->packet_frag_timestamp = asf->packet_timestamp;
1089
1090 130 asf->packet_time_delta = avio_r8(pb);
1091 130 rsize++;
1092 ✗ } else if (asf->packet_replic_size != 0) {
1093 ✗ av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n",
1094 asf->packet_replic_size);
1095 ✗ return AVERROR_INVALIDDATA;
1096 }
1097
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 3956 if (asf->packet_flags & 0x01) {
1098
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 2938 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
1099
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 2938 if (rsize > asf->packet_size_left) {
1100 ✗ av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
1101 ✗ return AVERROR_INVALIDDATA;
1102
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 2938 } else if (asf->packet_frag_size > asf->packet_size_left - rsize) {
1103 ✗ if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
1104 ✗ av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d>%d-%d+%d)\n",
1105 asf->packet_frag_size, asf->packet_size_left, rsize, asf->packet_padsize);
1106 ✗ return AVERROR_INVALIDDATA;
1107 } else {
1108 ✗ int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
1109 ✗ asf->packet_size_left += diff;
1110 ✗ asf->packet_padsize -= diff;
1111 }
1112 }
1113 } else {
1114 1018 asf->packet_frag_size = asf->packet_size_left - rsize;
1115 }
1116
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 3956 if (asf->packet_replic_size == 1) {
1117 130 asf->packet_multi_size = asf->packet_frag_size;
1118
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 130 if (asf->packet_multi_size > asf->packet_size_left)
1119 ✗ return AVERROR_INVALIDDATA;
1120 }
1121 3956 asf->packet_size_left -= rsize;
1122
1123 3956 return 0;
1124 }
1125
1126 /**
1127 * Parse data from individual ASF packets (which were previously loaded
1128 * with asf_get_packet()).
1129 * @param s demux context
1130 * @param pb context to read data from
1131 * @param pkt pointer to store packet data into
1132 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
1133 * packets need to be loaded (through asf_get_packet())
1134 */
1135 4422 static int asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
1136 {
1137 4422 ASFContext *asf = s->priv_data;
1138 4422 ASFStream *asf_st = 0;
1139 1588 for (;;) {
1140 int read;
1141
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 6010 if (avio_feof(pb))
1142 10 return AVERROR_EOF;
1143
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✓ Branch 1 taken 2003 times.
 6000 if (asf->packet_size_left < FRAME_HEADER_SIZE ||
1144
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 3997 asf->packet_segments < 1 && asf->packet_time_start == 0) {
1145 2003 int ret = asf->packet_size_left + asf->packet_padsize;
1146
1147
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 2003 if (asf->packet_size_left && asf->packet_size_left < FRAME_HEADER_SIZE)
1148 ✗ av_log(s, AV_LOG_WARNING, "Skip due to FRAME_HEADER_SIZE\n");
1149
1150
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 2003 assert(ret >= 0);
1151 /* fail safe */
1152 2003 avio_skip(pb, ret);
1153
1154 2003 asf->packet_pos = avio_tell(pb);
1155
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 2003 if (asf->data_object_size != (uint64_t)-1 &&
1156
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 2003 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1157 45 return AVERROR_EOF; /* Do not exceed the size of the data object */
1158 1958 return 1;
1159 }
1160
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 3997 if (asf->packet_time_start == 0) {
1161
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 3956 if (asf_read_frame_header(s, pb) < 0) {
1162 ✗ asf->packet_time_start = asf->packet_segments = 0;
1163 ✗ continue;
1164 }
1165
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 3956 if (asf->stream_index < 0 ||
1166
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 3956 s->streams[asf->stream_index]->discard >= AVDISCARD_ALL ||
1167
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 3663 (!asf->packet_key_frame &&
1168
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 3157 (s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY || asf->streams[s->streams[asf->stream_index]->id].skip_to_key))) {
1169 308 asf->packet_time_start = 0;
1170 /* unhandled packet (should not happen) */
1171 308 avio_skip(pb, asf->packet_frag_size);
1172 308 asf->packet_size_left -= asf->packet_frag_size;
1173
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 308 if (asf->stream_index < 0)
1174 ✗ av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n",
1175 asf->packet_frag_size);
1176 308 continue;
1177 }
1178 3648 asf->asf_st = &asf->streams[s->streams[asf->stream_index]->id];
1179
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 3648 if (!asf->packet_frag_offset)
1180 2396 asf->asf_st->skip_to_key = 0;
1181 }
1182 3689 asf_st = asf->asf_st;
1183
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 3689 av_assert0(asf_st);
1184
1185
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 3689 if (!asf_st->frag_offset && asf->packet_frag_offset) {
1186 30 av_log(s, AV_LOG_TRACE, "skipping asf data pkt with fragment offset for "
1187 "stream:%d, expected:%d but got %d from pkt)\n",
1188 asf->stream_index, asf_st->frag_offset,
1189 asf->packet_frag_offset);
1190 30 avio_skip(pb, asf->packet_frag_size);
1191 30 asf->packet_size_left -= asf->packet_frag_size;
1192 30 continue;
1193 }
1194
1195
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 3659 if (asf->packet_replic_size == 1) {
1196 // frag_offset is here used as the beginning timestamp
1197 115 asf->packet_frag_timestamp = asf->packet_time_start;
1198 115 asf->packet_time_start += asf->packet_time_delta;
1199 115 asf_st->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
1200 115 asf->packet_size_left--;
1201 115 asf->packet_multi_size--;
1202
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 115 if (asf->packet_multi_size < asf_st->packet_obj_size) {
1203 28 asf->packet_time_start = 0;
1204 28 avio_skip(pb, asf->packet_multi_size);
1205 28 asf->packet_size_left -= asf->packet_multi_size;
1206 28 continue;
1207 }
1208 87 asf->packet_multi_size -= asf_st->packet_obj_size;
1209 }
1210
1211
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 3631 if (asf_st->pkt.size != asf_st->packet_obj_size ||
1212 // FIXME is this condition sufficient?
1213
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 1222 asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) {
1214 int ret;
1215
1216
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 2409 if (asf_st->pkt.data) {
1217 ✗ av_log(s, AV_LOG_INFO,
1218 "freeing incomplete packet size %d, new %d\n",
1219 asf_st->pkt.size, asf_st->packet_obj_size);
1220 ✗ asf_st->frag_offset = 0;
1221 ✗ av_packet_unref(&asf_st->pkt);
1222 }
1223 /* new packet */
1224
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 2409 if ((ret = av_new_packet(&asf_st->pkt, asf_st->packet_obj_size)) < 0)
1225 ✗ return ret;
1226 2409 asf_st->seq = asf->packet_seq;
1227
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 2409 if (asf->packet_frag_timestamp != AV_NOPTS_VALUE) {
1228
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 2409 if (asf->ts_is_pts) {
1229 ✗ asf_st->pkt.pts = asf->packet_frag_timestamp - asf->hdr.preroll;
1230 } else
1231 2409 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
1232 }
1233 2409 asf_st->pkt.stream_index = asf->stream_index;
1234 2409 asf_st->pkt.pos = asf_st->packet_pos = asf->packet_pos;
1235 2409 asf_st->pkt_clean = 0;
1236
1237
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 2409 if (asf_st->pkt.data && asf_st->palette_changed) {
1238 uint8_t *pal;
1239 ✗ pal = av_packet_new_side_data(&asf_st->pkt, AV_PKT_DATA_PALETTE,
1240 AVPALETTE_SIZE);
1241 ✗ if (!pal) {
1242 ✗ av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
1243 } else {
1244 ✗ memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
1245 ✗ asf_st->palette_changed = 0;
1246 }
1247 }
1248 2409 av_log(asf, AV_LOG_TRACE, "new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
1249 asf->stream_index, asf->packet_key_frame,
1250 2409 asf_st->pkt.flags & AV_PKT_FLAG_KEY,
1251 2409 s->streams[asf->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO,
1252 asf_st->packet_obj_size);
1253
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 2409 if (s->streams[asf->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1254 1017 asf->packet_key_frame = 1;
1255
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 2409 if (asf->packet_key_frame)
1256 1062 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
1257 }
1258
1259 /* read data */
1260 3631 av_log(asf, AV_LOG_TRACE, "READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
1261 s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
1262 asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
1263 3631 asf->packet_size_left -= asf->packet_frag_size;
1264
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 3631 if (asf->packet_size_left < 0)
1265 ✗ continue;
1266
1267
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 3631 if (asf->packet_frag_offset >= asf_st->pkt.size ||
1268
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 3631 asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset) {
1269 ✗ av_log(s, AV_LOG_ERROR,
1270 "packet fragment position invalid %u,%u not in %u\n",
1271 asf->packet_frag_offset, asf->packet_frag_size,
1272 asf_st->pkt.size);
1273 ✗ continue;
1274 }
1275
1276
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 3631 if (asf->packet_frag_offset != asf_st->frag_offset && !asf_st->pkt_clean) {
1277 ✗ memset(asf_st->pkt.data + asf_st->frag_offset, 0, asf_st->pkt.size - asf_st->frag_offset);
1278 ✗ asf_st->pkt_clean = 1;
1279 }
1280
1281 3631 read = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1282 3631 asf->packet_frag_size);
1283
2/2
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 3631 if (read != asf->packet_frag_size) {
1284
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 6 if (read < 0 || asf->packet_frag_offset + read == 0)
1285 ✗ return read < 0 ? read : AVERROR_EOF;
1286
1287
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 6 if (asf_st->ds_span > 1) {
1288 // scrambling, we can either drop it completely or fill the remainder
1289 // TODO: should we fill the whole packet instead of just the current
1290 // fragment?
1291 ✗ memset(asf_st->pkt.data + asf->packet_frag_offset + read, 0,
1292 ✗ asf->packet_frag_size - read);
1293 ✗ read = asf->packet_frag_size;
1294 } else {
1295 // no scrambling, so we can return partial packets
1296 6 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + read);
1297 }
1298 }
1299
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 3631 if (s->key && s->keylen == 20)
1300 549 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1301 read);
1302 3631 asf_st->frag_offset += read;
1303 /* test if whole packet is read */
1304
2/2
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 3631 if (asf_st->frag_offset == asf_st->pkt.size) {
1305 // workaround for macroshit radio DVR-MS files
1306
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 2409 if (s->streams[asf->stream_index]->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
1307 ✗ asf_st->pkt.size > 100) {
1308 int i;
1309 ✗ for (i = 0; i < asf_st->pkt.size && !asf_st->pkt.data[i]; i++)
1310 ;
1311 ✗ if (i == asf_st->pkt.size) {
1312 ✗ av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1313 ✗ asf_st->frag_offset = 0;
1314 ✗ av_packet_unref(&asf_st->pkt);
1315 ✗ continue;
1316 }
1317 }
1318
1319 /* return packet */
1320
1/2
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 2409 if (asf_st->ds_span > 1) {
1321 ✗ if (asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span) {
1322 ✗ av_log(s, AV_LOG_ERROR,
1323 "pkt.size != ds_packet_size * ds_span (%d %d %d)\n",
1324 asf_st->pkt.size, asf_st->ds_packet_size,
1325 asf_st->ds_span);
1326 } else {
1327 /* packet descrambling */
1328 ✗ AVBufferRef *buf = av_buffer_alloc(asf_st->pkt.size +
1329 AV_INPUT_BUFFER_PADDING_SIZE);
1330 ✗ if (buf) {
1331 ✗ uint8_t *newdata = buf->data;
1332 ✗ int offset = 0;
1333 ✗ memset(newdata + asf_st->pkt.size, 0,
1334 AV_INPUT_BUFFER_PADDING_SIZE);
1335 ✗ while (offset < asf_st->pkt.size) {
1336 ✗ int off = offset / asf_st->ds_chunk_size;
1337 ✗ int row = off / asf_st->ds_span;
1338 ✗ int col = off % asf_st->ds_span;
1339 ✗ int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1340 ✗ assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1341 ✗ assert(idx + 1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1342 ✗ memcpy(newdata + offset,
1343 ✗ asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1344 ✗ asf_st->ds_chunk_size);
1345 ✗ offset += asf_st->ds_chunk_size;
1346 }
1347 ✗ av_buffer_unref(&asf_st->pkt.buf);
1348 ✗ asf_st->pkt.buf = buf;
1349 ✗ asf_st->pkt.data = buf->data;
1350 }
1351 }
1352 }
1353 2409 asf_st->frag_offset = 0;
1354 2409 *pkt = asf_st->pkt;
1355 2409 asf_st->pkt.buf = 0;
1356 2409 asf_st->pkt.size = 0;
1357 2409 asf_st->pkt.data = 0;
1358 2409 asf_st->pkt.side_data_elems = 0;
1359 2409 asf_st->pkt.side_data = NULL;
1360 2409 break; // packet completed
1361 }
1362 }
1363 2409 return 0;
1364 }
1365
1366 2464 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1367 {
1368 2464 ASFContext *asf = s->priv_data;
1369
1370 1958 for (;;) {
1371 int ret;
1372
1373 /* parse cached packets, if any */
1374
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 4422 if ((ret = asf_parse_packet(s, s->pb, pkt)) <= 0)
1375 2464 return ret;
1376
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 1958 if ((ret = asf_get_packet(s, s->pb)) < 0)
1377 ✗ assert(asf->packet_size_left < FRAME_HEADER_SIZE ||
1378 asf->packet_segments < 1);
1379 1958 asf->packet_time_start = 0;
1380 }
1381 }
1382
1383 // Added to support seeking after packets have been read
1384 // If information is not reset, read_packet fails due to
1385 // leftover information from previous reads
1386 82 static void asf_reset_header(AVFormatContext *s)
1387 {
1388 82 ASFContext *asf = s->priv_data;
1389 ASFStream *asf_st;
1390 int i;
1391
1392 82 asf->packet_size_left = 0;
1393 82 asf->packet_flags = 0;
1394 82 asf->packet_property = 0;
1395 82 asf->packet_timestamp = 0;
1396 82 asf->packet_segsizetype = 0;
1397 82 asf->packet_segments = 0;
1398 82 asf->packet_seq = 0;
1399 82 asf->packet_replic_size = 0;
1400 82 asf->packet_key_frame = 0;
1401 82 asf->packet_padsize = 0;
1402 82 asf->packet_frag_offset = 0;
1403 82 asf->packet_frag_size = 0;
1404 82 asf->packet_frag_timestamp = 0;
1405 82 asf->packet_multi_size = 0;
1406 82 asf->packet_time_delta = 0;
1407 82 asf->packet_time_start = 0;
1408
1409
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 10578 for (i = 0; i < 128; i++) {
1410 10496 asf_st = &asf->streams[i];
1411 10496 av_packet_unref(&asf_st->pkt);
1412 10496 asf_st->packet_obj_size = 0;
1413 10496 asf_st->frag_offset = 0;
1414 10496 asf_st->seq = 0;
1415 }
1416 82 asf->asf_st = NULL;
1417 82 }
1418
1419 26 static void skip_to_key(AVFormatContext *s)
1420 {
1421 26 ASFContext *asf = s->priv_data;
1422 int i;
1423
1424
2/2
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 3354 for (i = 0; i < 128; i++) {
1425 3328 int j = asf->asfid2avid[i];
1426 3328 ASFStream *asf_st = &asf->streams[i];
1427
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✓ Branch 3 taken 26 times.
 3328 if (j < 0 || s->streams[j]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1428 3302 continue;
1429
1430 26 asf_st->skip_to_key = 1;
1431 }
1432 26 }
1433
1434 33 static int asf_read_close(AVFormatContext *s)
1435 {
1436 33 asf_reset_header(s);
1437
1438 33 return 0;
1439 }
1440
1441 23 static int64_t asf_read_pts(AVFormatContext *s, int stream_index,
1442 int64_t *ppos, int64_t pos_limit)
1443 {
1444 23 FFFormatContext *const si = ffformatcontext(s);
1445 23 ASFContext *asf = s->priv_data;
1446 23 AVPacket pkt1, *pkt = &pkt1;
1447 ASFStream *asf_st;
1448 int64_t pts;
1449 23 int64_t pos = *ppos;
1450 int i;
1451 int64_t start_pos[ASF_MAX_STREAMS];
1452
1453
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 69 for (i = 0; i < s->nb_streams; i++)
1454 46 start_pos[i] = pos;
1455
1456
1/2
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 23 if (s->packet_size > 0)
1457 23 pos = (pos + s->packet_size - 1 - si->data_offset) /
1458 23 s->packet_size * s->packet_size +
1459 23 si->data_offset;
1460 23 *ppos = pos;
1461
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 23 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1462 ✗ return AV_NOPTS_VALUE;
1463
1464 23 ff_read_frame_flush(s);
1465 23 asf_reset_header(s);
1466 for (;;) {
1467
2/2
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 36 if (av_read_frame(s, pkt) < 0) {
1468 15 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1469 15 return AV_NOPTS_VALUE;
1470 }
1471
1472 21 pts = pkt->dts;
1473
1474
1/2
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 21 if (pkt->flags & AV_PKT_FLAG_KEY) {
1475 21 i = pkt->stream_index;
1476
1477 21 asf_st = &asf->streams[s->streams[i]->id];
1478
1479 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1480 21 pos = asf_st->packet_pos;
1481 av_assert1(pkt->pos == asf_st->packet_pos);
1482
1483 21 av_add_index_entry(s->streams[i], pos, pts, pkt->size,
1484 21 pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1485 21 start_pos[i] = asf_st->packet_pos + 1;
1486
1487
2/2
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 21 if (pkt->stream_index == stream_index) {
1488 8 av_packet_unref(pkt);
1489 8 break;
1490 }
1491 }
1492 13 av_packet_unref(pkt);
1493 }
1494
1495 8 *ppos = pos;
1496 8 return pts;
1497 }
1498
1499 1 static int asf_build_simple_index(AVFormatContext *s, int stream_index)
1500 {
1501 ff_asf_guid g;
1502 1 ASFContext *asf = s->priv_data;
1503 1 int64_t current_pos = avio_tell(s->pb);
1504 int64_t ret;
1505
1506
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 1 if((ret = avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET)) < 0) {
1507 ✗ return ret;
1508 }
1509
1510
1/2
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 1 if ((ret = ff_get_guid(s->pb, &g)) < 0)
1511 ✗ goto end;
1512
1513 /* the data object can be followed by other top-level objects,
1514 * skip them until the simple index object is reached */
1515
1/2
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 1 while (ff_guidcmp(&g, &ff_asf_simple_index_header)) {
1516 ✗ int64_t gsize = avio_rl64(s->pb);
1517 ✗ if (gsize < 24 || avio_feof(s->pb)) {
1518 ✗ goto end;
1519 }
1520 ✗ avio_skip(s->pb, gsize - 24);
1521 ✗ if ((ret = ff_get_guid(s->pb, &g)) < 0)
1522 ✗ goto end;
1523 }
1524
1525 {
1526 1 int64_t itime, last_pos = -1;
1527 int pct, ict;
1528 int i;
1529 1 av_unused int64_t gsize = avio_rl64(s->pb);
1530
1/2
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 1 if ((ret = ff_get_guid(s->pb, &g)) < 0)
1531 ✗ goto end;
1532 1 itime = avio_rl64(s->pb);
1533 1 pct = avio_rl32(s->pb);
1534 1 ict = avio_rl32(s->pb);
1535 1 av_log(s, AV_LOG_DEBUG,
1536 "itime:0x%"PRIx64", pct:%d, ict:%d\n", itime, pct, ict);
1537
1538
2/2
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 7 for (i = 0; i < ict; i++) {
1539 6 int pktnum = avio_rl32(s->pb);
1540 6 int pktct = avio_rl16(s->pb);
1541 6 int64_t pos = ffformatcontext(s)->data_offset + s->packet_size * (int64_t)pktnum;
1542 6 int64_t index_pts = FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1543
1544
1/2
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 6 if (avio_feof(s->pb)) {
1545 ✗ ret = AVERROR_INVALIDDATA;
1546 ✗ goto end;
1547 }
1548
1549
2/2
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 6 if (pos != last_pos) {
1550 3 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n",
1551 pktnum, pktct, index_pts);
1552 3 av_add_index_entry(s->streams[stream_index], pos, index_pts,
1553 3 s->packet_size, 0, AVINDEX_KEYFRAME);
1554 3 last_pos = pos;
1555 }
1556 }
1557 1 asf->index_read = ict > 1;
1558 }
1559 1 end:
1560 // if (avio_feof(s->pb)) {
1561 // ret = 0;
1562 // }
1563 1 avio_seek(s->pb, current_pos, SEEK_SET);
1564 1 return ret;
1565 }
1566
1567 26 static int asf_read_seek(AVFormatContext *s, int stream_index,
1568 int64_t pts, int flags)
1569 {
1570 26 ASFContext *asf = s->priv_data;
1571 26 AVStream *st = s->streams[stream_index];
1572 26 FFStream *const sti = ffstream(st);
1573 26 int ret = 0;
1574
1575
1/2
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 26 if (s->packet_size <= 0)
1576 ✗ return -1;
1577
1578 /* Try using the protocol's read_seek if available */
1579
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✗ Branch 1 not taken.
 26 if (s->pb) {
1580 26 int64_t ret64 = avio_seek_time(s->pb, stream_index, pts, flags);
1581
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 26 if (ret64 >= 0)
1582 ✗ asf_reset_header(s);
1583
1/2
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✓ Branch 1 taken 26 times.
 26 if (ret64 != AVERROR(ENOSYS))
1584 ✗ return ret64;
1585 }
1586
1587 /* explicitly handle the case of seeking to 0 */
1588
1/2
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✓ Branch 1 taken 26 times.
 26 if (!pts) {
1589 ✗ asf_reset_header(s);
1590 ✗ avio_seek(s->pb, ffformatcontext(s)->data_offset, SEEK_SET);
1591 ✗ return 0;
1592 }
1593
1594
2/2
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✓ Branch 1 taken 25 times.
 26 if (!asf->index_read) {
1595 1 ret = asf_build_simple_index(s, stream_index);
1596
1/2
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✓ Branch 1 taken 1 times.
 1 if (ret < 0)
1597 ✗ asf->index_read = -1;
1598 }
1599
1600
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✓ Branch 2 taken 26 times.
✗ Branch 3 not taken.
 26 if (asf->index_read > 0 && sti->index_entries) {
1601 26 int index = av_index_search_timestamp(st, pts, flags);
1602
2/2
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 26 if (index >= 0) {
1603 /* find the position */
1604 18 uint64_t pos = sti->index_entries[index].pos;
1605
1606 /* do the seek */
1607 18 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1608
1/2
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✓ Branch 2 taken 18 times.
 18 if(avio_seek(s->pb, pos, SEEK_SET) < 0)
1609 ✗ return -1;
1610 18 asf_reset_header(s);
1611 18 skip_to_key(s);
1612 18 return 0;
1613 }
1614 }
1615 /* no index or seeking by index failed */
1616
1/2
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✓ Branch 2 taken 8 times.
 8 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1617 ✗ return -1;
1618 8 asf_reset_header(s);
1619 8 skip_to_key(s);
1620 8 return 0;
1621 }
1622
1623 const FFInputFormat ff_asf_demuxer = {
1624 .p.name = "asf",
1625 .p.long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1626 .p.flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,
1627 .p.priv_class = &asf_class,
1628 .priv_data_size = sizeof(ASFContext),
1629 .read_probe = asf_probe,
1630 .read_header = asf_read_header,
1631 .read_packet = asf_read_packet,
1632 .read_close = asf_read_close,
1633 .read_seek = asf_read_seek,
1634 .read_timestamp = asf_read_pts,
1635 };
1636