FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/rmdec.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 598 909 65.8%
Functions: 24 27 88.9%
Branches: 314 579 54.2%
Line Branch Exec Source
1 /*
2 * "Real" 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/avassert.h"
25 #include "libavutil/channel_layout.h"
26 #include "libavutil/internal.h"
27 #include "libavutil/intreadwrite.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/mem.h"
30 #include "avformat.h"
31 #include "avio_internal.h"
32 #include "demux.h"
33 #include "internal.h"
34 #include "rmsipr.h"
35 #include "rm.h"
36
37 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC
38 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
39 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
40 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
41 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
42 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
43
44 struct RMStream {
45 AVPacket pkt; ///< place to store merged video frame / reordered audio data
46 int videobufsize; ///< current assembled frame size
47 int videobufpos; ///< position for the next slice in the video buffer
48 int curpic_num; ///< picture number of current frame
49 int cur_slice, slices;
50 int64_t pktpos; ///< first slice position in file
51 /// Audio descrambling matrix parameters
52 int64_t audiotimestamp; ///< Audio packet timestamp
53 int sub_packet_cnt; // Subpacket counter, used while reading
54 int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
55 int audio_framesize; ///< Audio frame size from container
56 int sub_packet_lengths[16]; ///< Length of each subpacket
57 int32_t deint_id; ///< deinterleaver used in audio stream
58 };
59
60 typedef struct RMDemuxContext {
61 int nb_packets;
62 int old_format;
63 int current_stream;
64 int remaining_len;
65 int audio_stream_num; ///< Stream number for audio packets
66 int audio_pkt_cnt; ///< Output packet counter
67 int data_end;
68 } RMDemuxContext;
69
70 303 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
71 {
72 303 int read = avio_get_str(pb, len, buf, buf_size);
73
74
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 303 if (read > 0)
75 293 avio_skip(pb, len - read);
76 303 }
77
78 193 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
79 {
80 193 get_strl(pb, buf, buf_size, avio_r8(pb));
81 193 }
82
83 30 static int rm_read_extradata(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, unsigned size)
84 {
85
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 30 if (size >= 1<<24) {
86 ✗ av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
87 ✗ return -1;
88 }
89 30 return ff_get_extradata(s, par, pb, size);
90 }
91
92 27 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
93 {
94 char buf[1024];
95 int i;
96
97
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 135 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
98
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 108 int len = wide ? avio_rb16(pb) : avio_r8(pb);
99
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 108 if (len > 0) {
100 33 get_strl(pb, buf, sizeof(buf), len);
101 33 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
102 }
103 }
104 27 }
105
106 45 RMStream *ff_rm_alloc_rmstream (void)
107 {
108 45 RMStream *rms = av_mallocz(sizeof(RMStream));
109
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 45 if (!rms)
110 ✗ return NULL;
111 45 rms->curpic_num = -1;
112 45 return rms;
113 }
114
115 35 void ff_rm_free_rmstream (RMStream *rms)
116 {
117
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 35 if (!rms)
118 ✗ return;
119
120 35 av_packet_unref(&rms->pkt);
121 }
122
123 14 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
124 AVStream *st, RMStream *ast, int read_all)
125 {
126 14 FFStream *const sti = ffstream(st);
127 char buf[256];
128 uint32_t version;
129 int ret;
130
131 /* ra type header */
132 14 version = avio_rb16(pb); /* version */
133
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 14 if (version == 3) {
134 unsigned bytes_per_minute;
135 2 int header_size = avio_rb16(pb);
136 2 int64_t startpos = avio_tell(pb);
137 2 avio_skip(pb, 8);
138 2 bytes_per_minute = avio_rb16(pb);
139 2 avio_skip(pb, 4);
140 2 rm_read_metadata(s, pb, 0);
141
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 2 if ((startpos + header_size) >= avio_tell(pb) + 2) {
142 // fourcc (should always be "lpcJ")
143 2 avio_r8(pb);
144 2 get_str8(pb, buf, sizeof(buf));
145 }
146 // Skip extra header crap (this should never happen)
147
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 2 if ((startpos + header_size) > avio_tell(pb))
148 ✗ avio_skip(pb, header_size + startpos - avio_tell(pb));
149
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 2 if (bytes_per_minute)
150 2 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
151 2 st->codecpar->sample_rate = 8000;
152 2 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
153 2 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
154 2 st->codecpar->codec_id = AV_CODEC_ID_RA_144;
155 2 ast->deint_id = DEINT_ID_INT0;
156 } else {
157 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
158 int codecdata_length;
159 unsigned bytes_per_minute;
160 /* old version (4) */
161 12 avio_skip(pb, 2); /* unused */
162 12 avio_rb32(pb); /* .ra4 */
163 12 avio_rb32(pb); /* data size */
164 12 avio_rb16(pb); /* version2 */
165 12 avio_rb32(pb); /* header size */
166 12 flavor= avio_rb16(pb); /* add codec info / flavor */
167 12 coded_framesize = avio_rb32(pb); /* coded frame size */
168
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 12 if (coded_framesize < 0)
169 ✗ return AVERROR_INVALIDDATA;
170 12 ast->coded_framesize = coded_framesize;
171
172 12 avio_rb32(pb); /* ??? */
173 12 bytes_per_minute = avio_rb32(pb);
174
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 12 if (version == 4) {
175
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 7 if (bytes_per_minute)
176 7 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
177 }
178 12 avio_rb32(pb); /* ??? */
179 12 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
180 12 st->codecpar->block_align= avio_rb16(pb); /* frame size */
181 12 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
182 12 avio_rb16(pb); /* ??? */
183
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 12 if (version == 5) {
184 5 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
185 }
186 12 st->codecpar->sample_rate = avio_rb16(pb);
187 12 avio_rb32(pb);
188 12 st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
189
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 12 if (version == 5) {
190 5 ast->deint_id = avio_rl32(pb);
191 5 avio_read(pb, buf, 4);
192 5 buf[4] = 0;
193 } else {
194 7 AV_WL32(buf, 0);
195 7 get_str8(pb, buf, sizeof(buf)); /* desc */
196 7 ast->deint_id = AV_RL32(buf);
197 7 get_str8(pb, buf, sizeof(buf)); /* desc */
198 }
199 12 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
200 12 st->codecpar->codec_tag = AV_RL32(buf);
201 24 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
202 12 st->codecpar->codec_tag);
203
204
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 12 switch (st->codecpar->codec_id) {
205 1 case AV_CODEC_ID_AC3:
206 1 sti->need_parsing = AVSTREAM_PARSE_FULL;
207 1 break;
208 1 case AV_CODEC_ID_RA_288:
209 1 st->codecpar->extradata_size= 0;
210 1 av_freep(&st->codecpar->extradata);
211 1 ast->audio_framesize = st->codecpar->block_align;
212 1 st->codecpar->block_align = coded_framesize;
213 1 break;
214 5 case AV_CODEC_ID_COOK:
215 5 sti->need_parsing = AVSTREAM_PARSE_HEADERS;
216 9 case AV_CODEC_ID_ATRAC3:
217 case AV_CODEC_ID_SIPR:
218
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 9 if (read_all) {
219 ✗ codecdata_length = 0;
220 } else {
221 9 avio_rb16(pb); avio_r8(pb);
222
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 9 if (version == 5)
223 5 avio_r8(pb);
224 9 codecdata_length = avio_rb32(pb);
225
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 9 if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
226 ✗ av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
227 ✗ return -1;
228 }
229 }
230
231 9 ast->audio_framesize = st->codecpar->block_align;
232
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 9 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
233
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 4 if (flavor > 3) {
234 ✗ av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
235 flavor);
236 ✗ return -1;
237 }
238 4 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
239 4 sti->need_parsing = AVSTREAM_PARSE_FULL_RAW;
240 } else {
241
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 5 if(sub_packet_size <= 0){
242 ✗ av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
243 ✗ return -1;
244 }
245 5 st->codecpar->block_align = ast->sub_packet_size;
246 }
247
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 9 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
248 ✗ return ret;
249
250 9 break;
251 ✗ case AV_CODEC_ID_AAC:
252 ✗ avio_rb16(pb); avio_r8(pb);
253 ✗ if (version == 5)
254 ✗ avio_r8(pb);
255 ✗ codecdata_length = avio_rb32(pb);
256 ✗ if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){
257 ✗ av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
258 ✗ return -1;
259 }
260 ✗ if (codecdata_length >= 1) {
261 ✗ avio_r8(pb);
262 ✗ if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
263 ✗ return ret;
264 }
265 ✗ break;
266 }
267
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 12 switch (ast->deint_id) {
268 1 case DEINT_ID_INT4:
269
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 1 if (ast->coded_framesize > ast->audio_framesize ||
270 1 sub_packet_h <= 1 ||
271
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 1 ast->coded_framesize * (uint64_t)sub_packet_h > (2LL + (sub_packet_h & 1)) * ast->audio_framesize)
272 ✗ return AVERROR_INVALIDDATA;
273
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 1 if (ast->coded_framesize * (uint64_t)sub_packet_h != 2LL*ast->audio_framesize) {
274 ✗ avpriv_request_sample(s, "mismatching interleaver parameters");
275 ✗ return AVERROR_INVALIDDATA;
276 }
277 1 break;
278 5 case DEINT_ID_GENR:
279
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 5 if (ast->sub_packet_size <= 0 ||
280
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 5 ast->sub_packet_size > ast->audio_framesize)
281 ✗ return AVERROR_INVALIDDATA;
282
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 5 if (ast->audio_framesize % ast->sub_packet_size)
283 ✗ return AVERROR_INVALIDDATA;
284 5 break;
285 6 case DEINT_ID_SIPR:
286 case DEINT_ID_INT0:
287 case DEINT_ID_VBRS:
288 case DEINT_ID_VBRF:
289 6 break;
290 ✗ default:
291 ✗ av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
292 ✗ return AVERROR_INVALIDDATA;
293 }
294
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 12 if (ast->deint_id == DEINT_ID_INT4 ||
295
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 11 ast->deint_id == DEINT_ID_GENR ||
296
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 6 ast->deint_id == DEINT_ID_SIPR) {
297
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 10 if (st->codecpar->block_align <= 0 ||
298
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 10 ast->audio_framesize * (uint64_t)sub_packet_h > (unsigned)INT_MAX ||
299
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 10 ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
300 ✗ return AVERROR_INVALIDDATA;
301
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 10 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
302 ✗ return AVERROR(ENOMEM);
303 }
304
305
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 12 if (read_all) {
306 ✗ avio_r8(pb);
307 ✗ avio_r8(pb);
308 ✗ avio_r8(pb);
309 ✗ rm_read_metadata(s, pb, 0);
310 }
311 }
312 14 return 0;
313 }
314
315 44 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
316 AVStream *st, RMStream *rst,
317 unsigned int codec_data_size, const uint8_t *mime)
318 {
319 unsigned int v;
320 int size;
321 int64_t codec_pos;
322 int ret;
323
324
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 44 if (codec_data_size > INT_MAX)
325 ✗ return AVERROR_INVALIDDATA;
326
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 44 if (codec_data_size == 0)
327 ✗ return 0;
328
329 // Duplicate tags
330
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 44 if ( st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN
331
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 44 && st->codecpar->codec_type != AVMEDIA_TYPE_DATA)
332 ✗ return AVERROR_INVALIDDATA;
333
334 44 avpriv_set_pts_info(st, 64, 1, 1000);
335 44 codec_pos = avio_tell(pb);
336 44 v = avio_rb32(pb);
337
338
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 44 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
339 /* ra type header */
340
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 13 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
341 ✗ return -1;
342
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 31 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
343 1 avio_seek(pb, -4, SEEK_CUR);
344
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 1 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
345 ✗ return ret;
346
347 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
348 1 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
349 1 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
350 1 st->codecpar->codec_tag);
351
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 40 } else if(mime && !strcmp(mime, "logical-fileinfo")){
352 int stream_count, rule_count, property_count, i;
353 10 ff_remove_stream(s, st);
354
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 10 if (avio_rb16(pb) != 0) {
355 ✗ av_log(s, AV_LOG_WARNING, "Unsupported version\n");
356 ✗ goto skip;
357 }
358 10 stream_count = avio_rb16(pb);
359 10 avio_skip(pb, 6*stream_count);
360 10 rule_count = avio_rb16(pb);
361 10 avio_skip(pb, 2*rule_count);
362 10 property_count = avio_rb16(pb);
363
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 99 for(i=0; i<property_count; i++){
364 uint8_t name[128], val[128];
365 89 avio_rb32(pb);
366
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 89 if (avio_rb16(pb) != 0) {
367 ✗ av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
368 ✗ goto skip; //FIXME skip just this one
369 }
370 89 get_str8(pb, name, sizeof(name));
371
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 89 switch(avio_rb32(pb)) {
372 77 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
373 77 av_dict_set(&s->metadata, name, val, 0);
374 77 break;
375 12 default: avio_skip(pb, avio_rb16(pb));
376 }
377 }
378 } else {
379 int fps;
380
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 20 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
381 ✗ fail1:
382 ✗ av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
383 ✗ goto skip;
384 }
385 20 st->codecpar->codec_tag = avio_rl32(pb);
386 40 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
387 20 st->codecpar->codec_tag);
388 20 av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
389 20 st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
390
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 20 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
391 ✗ goto fail1;
392 20 st->codecpar->width = avio_rb16(pb);
393 20 st->codecpar->height = avio_rb16(pb);
394 20 avio_skip(pb, 2); // looks like bits per sample
395 20 avio_skip(pb, 4); // always zero?
396 20 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
397 20 ffstream(st)->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
398 20 fps = avio_rb32(pb);
399
400
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 20 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
401 ✗ return ret;
402
403
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 20 if (fps > 0) {
404 19 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
405 0x10000, fps, (1 << 30) - 1);
406 #if FF_API_R_FRAME_RATE
407 19 st->r_frame_rate = st->avg_frame_rate;
408 #endif
409
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 1 } else if (s->error_recognition & AV_EF_EXPLODE) {
410 ✗ av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
411 ✗ return AVERROR_INVALIDDATA;
412 }
413 }
414
415 1 skip:
416 /* skip codec info */
417 44 size = avio_tell(pb) - codec_pos;
418
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 44 if (codec_data_size >= size) {
419 44 avio_skip(pb, codec_data_size - size);
420 } else {
421 ✗ av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
422 }
423
424 44 return 0;
425 }
426
427 /** this function assumes that the demuxer has already seeked to the start
428 * of the INDX chunk, and will bail out if not. */
429 12 static int rm_read_index(AVFormatContext *s)
430 {
431 12 AVIOContext *pb = s->pb;
432 unsigned int size, ver, n_pkts, str_id, next_off, n, pts;
433 uint64_t pos;
434 AVStream *st;
435
436 do {
437
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 14 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
438 10 return -1;
439 4 size = avio_rb32(pb);
440
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 4 if (size < 20)
441 ✗ return -1;
442 4 ver = avio_rb16(pb);
443
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 4 if (ver != 0 && ver != 2)
444 ✗ return AVERROR_INVALIDDATA;
445 4 n_pkts = avio_rb32(pb);
446 4 str_id = avio_rb16(pb);
447 4 next_off = avio_rb32(pb);
448
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 4 if (ver == 2)
449 ✗ avio_skip(pb, 4);
450
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 6 for (n = 0; n < s->nb_streams; n++)
451
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 5 if (s->streams[n]->id == str_id) {
452 3 st = s->streams[n];
453 3 break;
454 }
455
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 4 if (n == s->nb_streams) {
456 1 av_log(s, AV_LOG_ERROR,
457 "Invalid stream index %d for index at pos %"PRId64"\n",
458 str_id, avio_tell(pb));
459 1 goto skip;
460
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✓ Branch 3 taken 3 times.
 3 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
461 ✗ av_log(s, AV_LOG_ERROR,
462 "Nr. of packets in packet index for stream index %d "
463 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
464 str_id, avio_size(pb), avio_tell(pb),
465 ✗ (avio_size(pb) - avio_tell(pb)) / 14);
466 ✗ goto skip;
467 }
468
469
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 21 for (n = 0; n < n_pkts; n++) {
470
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 18 if (avio_feof(pb))
471 ✗ return AVERROR_INVALIDDATA;
472 18 avio_skip(pb, 2);
473 18 pts = avio_rb32(pb);
474
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 18 pos = (ver == 0) ? avio_rb32(pb) : avio_rb64(pb);
475 18 avio_skip(pb, 4); /* packet no. */
476
477 18 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
478 }
479
480 3 skip:
481
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 4 if (next_off && avio_tell(pb) < next_off &&
482 ✗ avio_seek(pb, next_off, SEEK_SET) < 0) {
483 ✗ av_log(s, AV_LOG_ERROR,
484 "Non-linear index detected, not supported\n");
485 ✗ return -1;
486 }
487
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 4 } while (next_off);
488
489 2 return 0;
490 }
491
492 1 static int rm_read_header_old(AVFormatContext *s)
493 {
494 1 RMDemuxContext *rm = s->priv_data;
495 AVStream *st;
496
497 1 rm->old_format = 1;
498 1 st = avformat_new_stream(s, NULL);
499
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 1 if (!st)
500 ✗ return -1;
501 1 st->priv_data = ff_rm_alloc_rmstream();
502
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 1 if (!st->priv_data)
503 ✗ return AVERROR(ENOMEM);
504 1 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
505 }
506
507 ✗ static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
508 AVStream *st, char *mime)
509 {
510 ✗ int number_of_streams = avio_rb16(pb);
511 int number_of_mdpr;
512 int i, ret;
513 unsigned size2;
514 ✗ for (i = 0; i<number_of_streams; i++)
515 ✗ avio_rb16(pb);
516 ✗ number_of_mdpr = avio_rb16(pb);
517 ✗ if (number_of_mdpr != 1) {
518 ✗ avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
519 }
520 ✗ for (i = 0; i < number_of_mdpr; i++) {
521 AVStream *st2;
522 ✗ if (i > 0) {
523 ✗ st2 = avformat_new_stream(s, NULL);
524 ✗ if (!st2) {
525 ✗ ret = AVERROR(ENOMEM);
526 ✗ return ret;
527 }
528 ✗ st2->id = st->id + (i<<16);
529 ✗ st2->codecpar->bit_rate = st->codecpar->bit_rate;
530 ✗ st2->start_time = st->start_time;
531 ✗ st2->duration = st->duration;
532 ✗ st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
533 ✗ st2->priv_data = ff_rm_alloc_rmstream();
534 ✗ if (!st2->priv_data)
535 ✗ return AVERROR(ENOMEM);
536 } else
537 ✗ st2 = st;
538
539 ✗ size2 = avio_rb32(pb);
540 ✗ ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
541 size2, NULL);
542 ✗ if (ret < 0)
543 ✗ return ret;
544 }
545 ✗ return 0;
546 }
547
548 26 static int rm_read_header(AVFormatContext *s)
549 {
550 26 RMDemuxContext *rm = s->priv_data;
551 AVStream *st;
552 26 AVIOContext *pb = s->pb;
553 unsigned int tag;
554 int tag_size;
555 int ver;
556 unsigned int start_time, duration;
557 26 unsigned int data_off = 0;
558 26 uint64_t indx_off = 0;
559 char buf[128], mime[128];
560 26 int flags = 0;
561 int ret;
562 unsigned size, v;
563 int64_t codec_pos;
564
565 26 tag = avio_rl32(pb);
566
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 26 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
567 /* very old .ra format */
568 1 return rm_read_header_old(s);
569
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 25 } else if (tag != MKTAG('.', 'R', 'M', 'F') && tag != MKTAG('.', 'R', 'M', 'P')) {
570 ✗ return AVERROR(EIO);
571 }
572
573 25 tag_size = avio_rb32(pb);
574
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 25 if (tag_size < 0)
575 ✗ return AVERROR_INVALIDDATA;
576 25 avio_skip(pb, tag_size - 8);
577
578 94 for(;;) {
579
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✓ Branch 2 taken 119 times.
 119 if (avio_feof(pb))
580 ✗ return AVERROR_INVALIDDATA;
581 119 tag = avio_rl32(pb);
582 119 tag_size = avio_rb32(pb);
583 119 ver = avio_rb16(pb);
584 119 av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
585 119 av_fourcc2str(tag), tag_size);
586
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 119 if ((tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A')) ||
587
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 4 (ver != 0 && ver != 2))
588 ✗ return AVERROR_INVALIDDATA;
589
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 119 switch(tag) {
590 25 case MKTAG('P', 'R', 'O', 'P'):
591 /* file header */
592 25 avio_rb32(pb); /* max bit rate */
593 25 avio_rb32(pb); /* avg bit rate */
594 25 avio_rb32(pb); /* max packet size */
595 25 avio_rb32(pb); /* avg packet size */
596 25 avio_rb32(pb); /* nb packets */
597 25 duration = avio_rb32(pb); /* duration */
598 25 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
599 25 avio_rb32(pb); /* preroll */
600
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 25 indx_off = (ver == 0) ? avio_rb32(pb) : avio_rb64(pb); /* index offset */
601 25 data_off = avio_rb32(pb); /* data offset */
602 25 avio_rb16(pb); /* nb streams */
603 25 flags = avio_rb16(pb); /* flags */
604 25 break;
605 25 case MKTAG('C', 'O', 'N', 'T'):
606 25 rm_read_metadata(s, pb, 1);
607 25 break;
608 44 case MKTAG('M', 'D', 'P', 'R'):
609 44 st = avformat_new_stream(s, NULL);
610
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 44 if (!st)
611 ✗ return AVERROR(ENOMEM);
612 44 st->id = avio_rb16(pb);
613 44 avio_rb32(pb); /* max bit rate */
614 44 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
615 44 avio_rb32(pb); /* max packet size */
616 44 avio_rb32(pb); /* avg packet size */
617 44 start_time = avio_rb32(pb); /* start time */
618 44 avio_rb32(pb); /* preroll */
619 44 duration = avio_rb32(pb); /* duration */
620 44 st->start_time = start_time;
621 44 st->duration = duration;
622
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 44 if(duration>0)
623 33 s->duration = AV_NOPTS_VALUE;
624 44 get_str8(pb, buf, sizeof(buf)); /* desc */
625 44 get_str8(pb, mime, sizeof(mime)); /* mimetype */
626 44 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
627 44 st->priv_data = ff_rm_alloc_rmstream();
628
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 44 if (!st->priv_data)
629 ✗ return AVERROR(ENOMEM);
630
631 44 size = avio_rb32(pb);
632 44 codec_pos = avio_tell(pb);
633
634 44 ffio_ensure_seekback(pb, 4);
635 44 v = avio_rb32(pb);
636
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 44 if (v == MKBETAG('M', 'L', 'T', 'I')) {
637 ✗ ret = rm_read_multi(s, s->pb, st, mime);
638 ✗ if (ret < 0)
639 ✗ return ret;
640 ✗ avio_seek(pb, codec_pos + size, SEEK_SET);
641 } else {
642 44 avio_skip(pb, -4);
643 44 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
644 size, mime);
645
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 44 if (ret < 0)
646 ✗ return ret;
647 }
648
649 44 break;
650 25 case MKTAG('D', 'A', 'T', 'A'):
651 25 goto header_end;
652 ✗ default:
653 /* unknown tag: skip it */
654 ✗ avio_skip(pb, tag_size - 10);
655 ✗ break;
656 }
657 }
658 25 header_end:
659 25 rm->nb_packets = avio_rb32(pb); /* number of packets */
660
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 25 if (!rm->nb_packets && (flags & 4))
661 ✗ rm->nb_packets = 3600 * 25;
662
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 25 if (ver == 2)
663 2 avio_skip(pb, 12);
664 25 avio_rb32(pb); /* next data header */
665
666
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 25 if (!data_off)
667 ✗ data_off = avio_tell(pb) - (ver == 0 ? 18 : 30);
668
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 25 if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
669
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 24 !(s->flags & AVFMT_FLAG_IGNIDX) &&
670 12 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
671 12 rm_read_index(s);
672
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 12 avio_seek(pb, data_off + (ver == 0 ? 18 : 30), SEEK_SET);
673 }
674
675 25 return 0;
676 }
677
678 7544 static int get_num(AVIOContext *pb, int *len)
679 {
680 int n, n1;
681
682 7544 n = avio_rb16(pb);
683 7544 (*len)-=2;
684 7544 n &= 0x7FFF;
685
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 7544 if (n >= 0x4000) {
686 6786 return n - 0x4000;
687 } else {
688 758 n1 = avio_rb16(pb);
689 758 (*len)-=2;
690 758 return (n << 16) | n1;
691 }
692 }
693
694 /* multiple of 20 bytes for ra144 (ugly) */
695 #define RAW_PACKET_SIZE 1000
696
697 7301 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
698 7301 RMDemuxContext *rm = s->priv_data;
699 7301 AVIOContext *pb = s->pb;
700 AVStream *st;
701 7301 uint32_t state=0xFFFFFFFF;
702
703
2/2
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 1356688 while(!avio_feof(pb)){
704 int len, num, i;
705 int mlti_id;
706 1356568 *pos= avio_tell(pb) - 3;
707
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 1356568 if(rm->remaining_len > 0){
708 559 num= rm->current_stream;
709 559 mlti_id = 0;
710 559 len= rm->remaining_len;
711 559 *timestamp = AV_NOPTS_VALUE;
712 559 *flags= 0;
713 }else{
714 1356009 state= (state<<8) + avio_r8(pb);
715
716
2/2
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✓ Branch 1 taken 1356005 times.
 1356009 if(state == MKBETAG('I', 'N', 'D', 'X')){
717 int ver;
718 int n_pkts;
719 int64_t expected_len;
720 4 len = avio_rb32(pb);
721 4 ver = avio_rb16(pb);
722
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 4 if (ver != 0 && ver != 2)
723 ✗ return AVERROR_INVALIDDATA;
724 4 n_pkts = avio_rb32(pb);
725
726
1/2
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✗ Branch 1 not taken.
 4 if (ver == 0)
727 4 expected_len = 20 + n_pkts * 14LL;
728 ✗ else if (ver == 2)
729 ✗ expected_len = 24 + n_pkts * 18LL;
730
731
3/4
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 4 if (len == 20 && expected_len <= INT_MAX)
732 /* some files don't add index entries to chunk size... */
733 2 len = expected_len;
734
1/2
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 2 else if (len != expected_len)
735 ✗ av_log(s, AV_LOG_WARNING,
736 "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
737 len, n_pkts, expected_len);
738
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 4 if(len < 14)
739 ✗ continue;
740 4 len -= 14; // we already read part of the index header
741 4 goto skip;
742
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 1356005 } else if (state == MKBETAG('D','A','T','A')) {
743 ✗ av_log(s, AV_LOG_WARNING,
744 "DATA tag in middle of chunk, file may be broken.\n");
745 }
746
747
4/4
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 1356005 if(state > (unsigned)0xFFFF || state <= 12)
748 1349318 continue;
749 6687 len=state - 12;
750 6687 state= 0xFFFFFFFF;
751
752 6687 num = avio_rb16(pb);
753 6687 *timestamp = avio_rb32(pb);
754 6687 mlti_id = (avio_r8(pb) >> 1) - 1;
755 6687 mlti_id = FFMAX(mlti_id, 0) << 16;
756 6687 *flags = avio_r8(pb); /* flags */
757 }
758
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 10322 for(i=0;i<s->nb_streams;i++) {
759 10257 st = s->streams[i];
760
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 10257 if (mlti_id + num == st->id)
761 7181 break;
762 }
763
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 7246 if (i == s->nb_streams) {
764 65 skip:
765 /* skip packet if unknown number */
766 69 avio_skip(pb, len);
767 69 rm->remaining_len = 0;
768 69 continue;
769 }
770 7181 *stream_index= i;
771
772 7181 return len;
773 }
774 120 return -1;
775 }
776
777 3776 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
778 RMDemuxContext *rm, RMStream *vst,
779 AVPacket *pkt, int len, int *pseq,
780 int64_t *timestamp)
781 {
782 int hdr;
783 3776 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
784 int type;
785 int ret;
786
787 3776 hdr = avio_r8(pb); len--;
788 3776 type = hdr >> 6;
789
790
2/2
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 3776 if(type != 3){ // not frame as a part of packet
791 2536 seq = avio_r8(pb); len--;
792 }
793
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✓ Branch 1 taken 4 times.
 3776 if(type != 1){ // not whole frame
794 3772 len2 = get_num(pb, &len);
795 3772 pos = get_num(pb, &len);
796 3772 pic_num = avio_r8(pb); len--;
797 }
798
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 3776 if(len<0) {
799 ✗ av_log(s, AV_LOG_ERROR, "Insufficient data\n");
800 ✗ return -1;
801 }
802 3776 rm->remaining_len = len;
803
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 3776 if(type&1){ // frame, not slice
804
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 1244 if(type == 3){ // frame as a part of packet
805 1240 len= len2;
806 1240 *timestamp = pos;
807 }
808
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 1244 if(rm->remaining_len < len) {
809 1 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
810 1 return -1;
811 }
812 1243 rm->remaining_len -= len;
813
1/2
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✓ Branch 2 taken 1243 times.
 1243 if ((ret = av_new_packet(pkt, len + 9)) < 0)
814 ✗ return ret;
815 1243 pkt->data[0] = 0;
816 1243 AV_WL32(pkt->data + 1, 1);
817 1243 AV_WL32(pkt->data + 5, 0);
818
2/2
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✓ Branch 2 taken 1241 times.
 1243 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
819 2 av_packet_unref(pkt);
820 2 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
821
1/2
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 2 return ret < 0 ? ret : AVERROR(EIO);
822 }
823 1241 return 0;
824 }
825 //now we have to deal with single slice
826
827 2532 *pseq = seq;
828
4/4
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 2532 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
829
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 1031 if (len2 > ffio_limit(pb, len2)) {
830 3 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
831 3 return AVERROR_INVALIDDATA;
832 }
833 1028 vst->slices = ((hdr & 0x3F) << 1) + 1;
834 1028 vst->videobufsize = len2 + 8*vst->slices + 1;
835 1028 av_packet_unref(&vst->pkt); //FIXME this should be output.
836
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 1028 if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
837 ✗ return ret;
838 1028 vst->videobufpos = 8*vst->slices + 1;
839 1028 vst->cur_slice = 0;
840 1028 vst->curpic_num = pic_num;
841 1028 vst->pktpos = avio_tell(pb);
842 }
843
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 2529 if(type == 2)
844 1017 len = FFMIN(len, pos);
845
846
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 2529 if(++vst->cur_slice > vst->slices) {
847 ✗ av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
848 ✗ return 1;
849 }
850
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 2529 if(!vst->pkt.data)
851 ✗ return AVERROR(ENOMEM);
852 2529 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
853 2529 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
854
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 2529 if(vst->videobufpos + len > vst->videobufsize) {
855 ✗ av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
856 ✗ return 1;
857 }
858
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 2529 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
859 ✗ return AVERROR(EIO);
860 2529 vst->videobufpos += len;
861 2529 rm->remaining_len-= len;
862
863
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 2529 if (type == 2 || vst->videobufpos == vst->videobufsize) {
864 1028 vst->pkt.data[0] = vst->cur_slice-1;
865 1028 av_packet_move_ref(pkt, &vst->pkt);
866
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 1028 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
867 785 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
868 785 vst->videobufpos - 1 - 8*vst->slices);
869 1028 av_shrink_packet(pkt, vst->videobufpos + 8*(vst->cur_slice - vst->slices));
870 1028 pkt->pts = AV_NOPTS_VALUE;
871 1028 pkt->pos = vst->pktpos;
872 1028 vst->slices = 0;
873 1028 return 0;
874 }
875
876 1501 return 1;
877 }
878
879 static inline void
880 956 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
881 {
882 uint8_t *ptr;
883 int j;
884
885
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 956 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
886 10 ptr = pkt->data;
887
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 1401 for (j=0;j<pkt->size;j+=2) {
888 1391 FFSWAP(int, ptr[0], ptr[1]);
889 1391 ptr += 2;
890 }
891 }
892 956 }
893
894 4196 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
895 4196 int ret = avio_read(pb, dst, n);
896
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 4196 if (ret != n) {
897
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 7 if (ret >= 0) memset(dst + ret, 0, n - ret);
898 5 else memset(dst , 0, n);
899 7 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
900 }
901 4196 return ret;
902 }
903
904 int
905 5928 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
906 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
907 int *seq, int flags, int64_t timestamp)
908 {
909 5928 RMDemuxContext *rm = s->priv_data;
910 int ret;
911
912
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 5928 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
913 3776 rm->current_stream= st->id;
914 3776 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp);
915
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 3776 if(ret)
916 1507 return ret < 0 ? ret : -1; //got partial frame or error
917
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✗ Branch 1 not taken.
 2152 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
918
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 2152 if ((ast->deint_id == DEINT_ID_GENR) ||
919
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 1900 (ast->deint_id == DEINT_ID_INT4) ||
920
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 1485 (ast->deint_id == DEINT_ID_SIPR)) {
921 int x;
922 1195 int sps = ast->sub_packet_size;
923 1195 int cfs = ast->coded_framesize;
924 1195 int h = ast->sub_packet_h;
925 1195 int y = ast->sub_packet_cnt;
926 1195 int w = ast->audio_framesize;
927
928
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 1195 if (flags & 2)
929 141 y = ast->sub_packet_cnt = 0;
930
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 1195 if (!y)
931 141 ast->audiotimestamp = timestamp;
932
933
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✗ Branch 3 not taken.
 1195 switch (ast->deint_id) {
934 415 case DEINT_ID_INT4:
935
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 2905 for (x = 0; x < h/2; x++)
936 2490 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
937 415 break;
938 252 case DEINT_ID_GENR:
939
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 1430 for (x = 0; x < w/sps; x++)
940 1178 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
941 252 break;
942 528 case DEINT_ID_SIPR:
943 528 readfull(s, pb, ast->pkt.data + y * w, w);
944 528 break;
945 }
946
947
2/2
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 1195 if (++(ast->sub_packet_cnt) < h)
948 1060 return -1;
949
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 135 if (ast->deint_id == DEINT_ID_SIPR)
950 88 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
951
952 135 ast->sub_packet_cnt = 0;
953 135 rm->audio_stream_num = st->index;
954
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 135 if (st->codecpar->block_align <= 0) {
955 ✗ av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
956 ✗ return AVERROR_INVALIDDATA;
957 }
958 135 rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
959
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 957 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
960
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 957 (ast->deint_id == DEINT_ID_VBRS)) {
961 int x;
962 ✗ rm->audio_stream_num = st->index;
963 ✗ ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
964 ✗ if (ast->sub_packet_cnt) {
965 ✗ for (x = 0; x < ast->sub_packet_cnt; x++)
966 ✗ ast->sub_packet_lengths[x] = avio_rb16(pb);
967 ✗ rm->audio_pkt_cnt = ast->sub_packet_cnt;
968 ✗ ast->audiotimestamp = timestamp;
969 } else
970 ✗ return -1;
971 } else {
972 957 ret = av_get_packet(pb, pkt, len);
973
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 957 if (ret < 0)
974 1 return ret;
975 956 rm_ac3_swap_bytes(st, pkt);
976 }
977 } else {
978 ✗ ret = av_get_packet(pb, pkt, len);
979 ✗ if (ret < 0)
980 ✗ return ret;
981 }
982
983 3360 pkt->stream_index = st->index;
984
985 3360 pkt->pts = timestamp;
986
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 3360 if (flags & 2)
987 689 pkt->flags |= AV_PKT_FLAG_KEY;
988
989
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 3360 return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
990 }
991
992 int
993 9917 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
994 AVStream *st, RMStream *ast, AVPacket *pkt)
995 {
996 9917 RMDemuxContext *rm = s->priv_data;
997 int ret;
998
999
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 9917 av_assert0 (rm->audio_pkt_cnt > 0);
1000
1001
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 9917 if (ast->deint_id == DEINT_ID_VBRF ||
1002
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 9917 ast->deint_id == DEINT_ID_VBRS) {
1003 ✗ ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
1004 ✗ if (ret < 0)
1005 ✗ return ret;
1006 } else {
1007 9917 ret = av_new_packet(pkt, st->codecpar->block_align);
1008
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 9917 if (ret < 0)
1009 ✗ return ret;
1010 9917 memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
1011 9917 (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
1012 9917 st->codecpar->block_align);
1013 }
1014 9917 rm->audio_pkt_cnt--;
1015
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 9917 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1016 135 ast->audiotimestamp = AV_NOPTS_VALUE;
1017 135 pkt->flags = AV_PKT_FLAG_KEY;
1018 } else
1019 9782 pkt->flags = 0;
1020 9917 pkt->stream_index = st->index;
1021
1022 9917 return rm->audio_pkt_cnt;
1023 }
1024
1025 11529 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
1026 {
1027 11529 RMDemuxContext *rm = s->priv_data;
1028 11529 AVStream *st = NULL; // init to silence compiler warning
1029 11529 int i, res, seq = 1;
1030 int64_t timestamp, pos, len;
1031 int flags;
1032
1033 for (;;) {
1034
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 15867 if (rm->audio_pkt_cnt) {
1035 // If there are queued audio packet return them first
1036 9917 st = s->streams[rm->audio_stream_num];
1037 9917 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1038
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 9917 if(res < 0)
1039 ✗ return res;
1040 9917 flags = 0;
1041 } else {
1042
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 5950 if (rm->old_format) {
1043 RMStream *ast;
1044
1045 3 st = s->streams[0];
1046 3 ast = st->priv_data;
1047 3 timestamp = AV_NOPTS_VALUE;
1048
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 3 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1049 ✗ ast->coded_framesize * (int64_t)ast->sub_packet_h / 2;
1050
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 3 if (len > INT_MAX)
1051 ✗ return AVERROR_INVALIDDATA;
1052
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 3 flags = (seq++ == 1) ? 2 : 0;
1053 3 pos = avio_tell(s->pb);
1054 } else {
1055 5947 len = rm_sync(s, &timestamp, &flags, &i, &pos);
1056
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 5947 if (len > 0)
1057 5928 st = s->streams[i];
1058 }
1059
1060
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 5950 if (avio_feof(s->pb))
1061 22 return AVERROR_EOF;
1062
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 5928 if (len <= 0)
1063 ✗ return AVERROR(EIO);
1064
1065 5928 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1066 &seq, flags, timestamp);
1067
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 5928 if (res < -1)
1068 6 return res;
1069
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 5922 if((flags&2) && (seq&0x7F) == 1)
1070 794 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1071
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 5922 if (res)
1072 2697 continue;
1073 }
1074
1075
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 13142 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1076
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✓ Branch 1 taken 11501 times.
 11523 || st->discard >= AVDISCARD_ALL){
1077 1641 av_packet_unref(pkt);
1078 } else
1079 break;
1080 }
1081
1082 11501 return 0;
1083 }
1084
1085 26 static int rm_read_close(AVFormatContext *s)
1086 {
1087 int i;
1088
1089
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 61 for (i=0;i<s->nb_streams;i++)
1090 35 ff_rm_free_rmstream(s->streams[i]->priv_data);
1091
1092 26 return 0;
1093 }
1094
1095 7186 static int rm_probe(const AVProbeData *p)
1096 {
1097 /* check file header */
1098
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 7186 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1099
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 25 p->buf[2] == 'M' && (p->buf[3] == 'F' || p->buf[3] == 'P') &&
1100
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 25 p->buf[4] == 0 && p->buf[5] == 0) ||
1101
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 7161 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1102
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 1 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1103 26 return AVPROBE_SCORE_MAX;
1104 else
1105 7160 return 0;
1106 }
1107
1108 248 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1109 int64_t *ppos, int64_t pos_limit)
1110 {
1111 248 RMDemuxContext *rm = s->priv_data;
1112 int64_t pos, dts;
1113 int stream_index2, flags, len, h;
1114
1115 248 pos = *ppos;
1116
1117
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 248 if(rm->old_format)
1118 ✗ return AV_NOPTS_VALUE;
1119
1120
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✓ Branch 2 taken 248 times.
 248 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1121 ✗ return AV_NOPTS_VALUE;
1122
1123 248 rm->remaining_len=0;
1124 1106 for(;;){
1125 1354 int seq=1;
1126 AVStream *st;
1127
1128 1354 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1129
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✓ Branch 1 taken 1253 times.
 1354 if(len<0)
1130 101 return AV_NOPTS_VALUE;
1131
1132 1253 st = s->streams[stream_index2];
1133
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✓ Branch 1 taken 218 times.
 1253 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1134 1035 h= avio_r8(s->pb); len--;
1135
1/2
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✗ Branch 1 not taken.
 1035 if(!(h & 0x40)){
1136 1035 seq = avio_r8(s->pb); len--;
1137 }
1138 }
1139
1140
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✗ Branch 3 not taken.
 1253 if((flags&2) && (seq&0x7F) == 1){
1141 355 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1142 flags, stream_index2, stream_index, dts, seq);
1143 355 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1144
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✓ Branch 1 taken 208 times.
 355 if(stream_index2 == stream_index)
1145 147 break;
1146 }
1147
1148 1106 avio_skip(s->pb, len);
1149 }
1150 147 *ppos = pos;
1151 147 return dts;
1152 }
1153
1154 78 static int rm_read_seek(AVFormatContext *s, int stream_index,
1155 int64_t pts, int flags)
1156 {
1157 78 RMDemuxContext *rm = s->priv_data;
1158
1159
2/2
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✓ Branch 2 taken 77 times.
 78 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1160 1 return -1;
1161 77 rm->audio_pkt_cnt = 0;
1162 77 return 0;
1163 }
1164
1165
1166 const FFInputFormat ff_rm_demuxer = {
1167 .p.name = "rm",
1168 .p.long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1169 .priv_data_size = sizeof(RMDemuxContext),
1170 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
1171 .read_probe = rm_probe,
1172 .read_header = rm_read_header,
1173 .read_packet = rm_read_packet,
1174 .read_close = rm_read_close,
1175 .read_timestamp = rm_read_dts,
1176 .read_seek = rm_read_seek,
1177 };
1178
1179 const FFInputFormat ff_rdt_demuxer = {
1180 .p.name = "rdt",
1181 .p.long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1182 .p.flags = AVFMT_NOFILE,
1183 .priv_data_size = sizeof(RMDemuxContext),
1184 .read_close = rm_read_close,
1185 };
1186
1187 7186 static int ivr_probe(const AVProbeData *p)
1188 {
1189
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✗ Branch 1 not taken.
 7186 if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1190
1/2
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✗ Branch 1 not taken.
 7186 memcmp(p->buf, ".REC", 4))
1191 7186 return 0;
1192
1193 ✗ return AVPROBE_SCORE_MAX;
1194 }
1195
1196 ✗ static int ivr_read_header(AVFormatContext *s)
1197 {
1198 unsigned tag, type, len, tlen, value;
1199 ✗ int i, j, n, count, nb_streams = 0, ret;
1200 uint8_t key[256], val[256];
1201 ✗ AVIOContext *pb = s->pb;
1202 AVStream *st;
1203 ✗ int64_t pos, offset=0, temp;
1204
1205 ✗ pos = avio_tell(pb);
1206 ✗ tag = avio_rl32(pb);
1207 ✗ if (tag == MKTAG('.','R','1','M')) {
1208 ✗ if (avio_rb16(pb) != 1)
1209 ✗ return AVERROR_INVALIDDATA;
1210 ✗ if (avio_r8(pb) != 1)
1211 ✗ return AVERROR_INVALIDDATA;
1212 ✗ len = avio_rb32(pb);
1213 ✗ avio_skip(pb, len);
1214 ✗ avio_skip(pb, 5);
1215 ✗ temp = avio_rb64(pb);
1216 ✗ while (!avio_feof(pb) && temp) {
1217 ✗ offset = temp;
1218 ✗ temp = avio_rb64(pb);
1219 }
1220 ✗ if (offset <= 0)
1221 ✗ return AVERROR_INVALIDDATA;
1222 ✗ avio_skip(pb, offset - avio_tell(pb));
1223 ✗ if (avio_r8(pb) != 1)
1224 ✗ return AVERROR_INVALIDDATA;
1225 ✗ len = avio_rb32(pb);
1226 ✗ avio_skip(pb, len);
1227 ✗ if (avio_r8(pb) != 2)
1228 ✗ return AVERROR_INVALIDDATA;
1229 ✗ avio_skip(pb, 16);
1230 ✗ pos = avio_tell(pb);
1231 ✗ tag = avio_rl32(pb);
1232 }
1233
1234 ✗ if (tag != MKTAG('.','R','E','C'))
1235 ✗ return AVERROR_INVALIDDATA;
1236
1237 ✗ if (avio_r8(pb) != 0)
1238 ✗ return AVERROR_INVALIDDATA;
1239 ✗ count = avio_rb32(pb);
1240 ✗ for (i = 0; i < count; i++) {
1241 ✗ if (avio_feof(pb))
1242 ✗ return AVERROR_INVALIDDATA;
1243
1244 ✗ type = avio_r8(pb);
1245 ✗ tlen = avio_rb32(pb);
1246 ✗ avio_get_str(pb, tlen, key, sizeof(key));
1247 ✗ len = avio_rb32(pb);
1248 ✗ if (type == 5) {
1249 ✗ avio_get_str(pb, len, val, sizeof(val));
1250 ✗ av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1251 ✗ } else if (type == 4) {
1252 ✗ av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1253 ✗ for (j = 0; j < len; j++) {
1254 ✗ if (avio_feof(pb))
1255 ✗ return AVERROR_INVALIDDATA;
1256 ✗ av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1257 }
1258 ✗ av_log(s, AV_LOG_DEBUG, "'\n");
1259 ✗ } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1260 ✗ nb_streams = value = avio_rb32(pb);
1261 ✗ } else if (len == 4 && type == 3) {
1262 ✗ value = avio_rb32(pb);
1263 ✗ av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1264 } else {
1265 ✗ av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1266 ✗ avio_skip(pb, len);
1267 }
1268 }
1269
1270 ✗ for (n = 0; n < nb_streams; n++) {
1271 ✗ if (!(st = avformat_new_stream(s, NULL)) ||
1272 ✗ !(st->priv_data = ff_rm_alloc_rmstream()))
1273 ✗ return AVERROR(ENOMEM);
1274
1275 ✗ if (avio_r8(pb) != 1)
1276 ✗ return AVERROR_INVALIDDATA;
1277
1278 ✗ count = avio_rb32(pb);
1279 ✗ for (i = 0; i < count; i++) {
1280 ✗ if (avio_feof(pb))
1281 ✗ return AVERROR_INVALIDDATA;
1282
1283 ✗ type = avio_r8(pb);
1284 ✗ tlen = avio_rb32(pb);
1285 ✗ avio_get_str(pb, tlen, key, sizeof(key));
1286 ✗ len = avio_rb32(pb);
1287 ✗ if (type == 5) {
1288 ✗ avio_get_str(pb, len, val, sizeof(val));
1289 ✗ av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1290 ✗ } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1291 ✗ ret = ffio_ensure_seekback(pb, 4);
1292 ✗ if (ret < 0)
1293 ✗ return ret;
1294 ✗ if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1295 ✗ ret = rm_read_multi(s, pb, st, NULL);
1296 } else {
1297 ✗ if (avio_feof(pb))
1298 ✗ return AVERROR_INVALIDDATA;
1299 ✗ avio_seek(pb, -4, SEEK_CUR);
1300 ✗ ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1301 }
1302
1303 ✗ if (ret < 0)
1304 ✗ return ret;
1305 ✗ } else if (type == 4) {
1306 int j;
1307
1308 ✗ av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1309 ✗ for (j = 0; j < len; j++) {
1310 ✗ if (avio_feof(pb))
1311 ✗ return AVERROR_INVALIDDATA;
1312 ✗ av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1313 }
1314 ✗ av_log(s, AV_LOG_DEBUG, "'\n");
1315 ✗ } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1316 ✗ st->duration = avio_rb32(pb);
1317 ✗ } else if (len == 4 && type == 3) {
1318 ✗ value = avio_rb32(pb);
1319 ✗ av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1320 } else {
1321 ✗ av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1322 ✗ avio_skip(pb, len);
1323 }
1324 }
1325 }
1326
1327 ✗ if (avio_r8(pb) != 6)
1328 ✗ return AVERROR_INVALIDDATA;
1329 ✗ avio_skip(pb, 12);
1330 ✗ avio_seek(pb, avio_rb64(pb) + pos, SEEK_SET);
1331 ✗ if (avio_r8(pb) != 8)
1332 ✗ return AVERROR_INVALIDDATA;
1333 ✗ avio_skip(pb, 8);
1334
1335 ✗ return 0;
1336 }
1337
1338 ✗ static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
1339 {
1340 ✗ RMDemuxContext *rm = s->priv_data;
1341 ✗ int ret = AVERROR_EOF, opcode;
1342 ✗ AVIOContext *pb = s->pb;
1343 unsigned size, index;
1344 int64_t pos, pts;
1345
1346 ✗ if (avio_feof(pb) || rm->data_end)
1347 ✗ return AVERROR_EOF;
1348
1349 ✗ pos = avio_tell(pb);
1350
1351 for (;;) {
1352 ✗ if (rm->audio_pkt_cnt) {
1353 // If there are queued audio packet return them first
1354 AVStream *st;
1355
1356 ✗ st = s->streams[rm->audio_stream_num];
1357 ✗ ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1358 ✗ if (ret < 0) {
1359 ✗ return ret;
1360 }
1361 } else {
1362 ✗ if (rm->remaining_len) {
1363 ✗ avio_skip(pb, rm->remaining_len);
1364 ✗ rm->remaining_len = 0;
1365 }
1366
1367 ✗ if (avio_feof(pb))
1368 ✗ return AVERROR_EOF;
1369
1370 ✗ opcode = avio_r8(pb);
1371 ✗ if (opcode == 2) {
1372 AVStream *st;
1373 ✗ int seq = 1;
1374
1375 ✗ pts = avio_rb32(pb);
1376 ✗ index = avio_rb16(pb);
1377 ✗ if (index >= s->nb_streams)
1378 ✗ return AVERROR_INVALIDDATA;
1379
1380 ✗ avio_skip(pb, 4);
1381 ✗ size = avio_rb32(pb);
1382 ✗ avio_skip(pb, 4);
1383
1384 ✗ if (size < 1 || size > INT_MAX/4) {
1385 ✗ av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1386 ✗ return AVERROR_INVALIDDATA;
1387 }
1388
1389 ✗ st = s->streams[index];
1390 ✗ ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1391 &seq, 0, pts);
1392 ✗ if (ret < -1) {
1393 ✗ return ret;
1394 ✗ } else if (ret) {
1395 ✗ continue;
1396 }
1397
1398 ✗ pkt->pos = pos;
1399 ✗ pkt->pts = pts;
1400 ✗ pkt->stream_index = index;
1401 ✗ } else if (opcode == 7) {
1402 ✗ pos = avio_rb64(pb);
1403 ✗ if (!pos) {
1404 ✗ rm->data_end = 1;
1405 ✗ return AVERROR_EOF;
1406 }
1407 } else {
1408 ✗ av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1409 ✗ return AVERROR(EIO);
1410 }
1411 }
1412
1413 ✗ break;
1414 }
1415
1416 ✗ return ret;
1417 }
1418
1419 const FFInputFormat ff_ivr_demuxer = {
1420 .p.name = "ivr",
1421 .p.long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1422 .p.extensions = "ivr",
1423 .priv_data_size = sizeof(RMDemuxContext),
1424 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
1425 .read_probe = ivr_probe,
1426 .read_header = ivr_read_header,
1427 .read_packet = ivr_read_packet,
1428 .read_close = rm_read_close,
1429 };
1430