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ffmpeg / libavformat / rmdec.c @ 470bce2b

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1 de6d9b64 Fabrice Bellard
/*
2 7b2a2ce5 Aurelien Jacobs
 * "Real" compatible demuxer.
3 19720f15 Fabrice Bellard
 * Copyright (c) 2000, 2001 Fabrice Bellard.
4 de6d9b64 Fabrice Bellard
 *
5 b78e7197 Diego Biurrun
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8 19720f15 Fabrice Bellard
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10 b78e7197 Diego Biurrun
 * version 2.1 of the License, or (at your option) any later version.
11 de6d9b64 Fabrice Bellard
 *
12 b78e7197 Diego Biurrun
 * FFmpeg is distributed in the hope that it will be useful,
13 de6d9b64 Fabrice Bellard
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 19720f15 Fabrice Bellard
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16 de6d9b64 Fabrice Bellard
 *
17 19720f15 Fabrice Bellard
 * You should have received a copy of the GNU Lesser General Public
18 b78e7197 Diego Biurrun
 * License along with FFmpeg; if not, write to the Free Software
19 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 de6d9b64 Fabrice Bellard
 */
21 245976da Diego Biurrun
22
#include "libavutil/avstring.h"
23 de6d9b64 Fabrice Bellard
#include "avformat.h"
24 ba614729 Ronald S. Bultje
#include "rm.h"
25 1edddc99 Ronald S. Bultje
26 ba614729 Ronald S. Bultje
struct RMStream {
27 0b4ff0c9 Michael Niedermayer
    AVPacket pkt;      ///< place to store merged video frame / reordered audio data
28 1edddc99 Ronald S. Bultje
    int videobufsize;  ///< current assembled frame size
29
    int videobufpos;   ///< position for the next slice in the video buffer
30
    int curpic_num;    ///< picture number of current frame
31
    int cur_slice, slices;
32
    int64_t pktpos;    ///< first slice position in file
33
    /// Audio descrambling matrix parameters
34
    int64_t audiotimestamp; ///< Audio packet timestamp
35
    int sub_packet_cnt; // Subpacket counter, used while reading
36
    int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
37 ba614729 Ronald S. Bultje
    int audio_framesize; /// Audio frame size from container
38
    int sub_packet_lengths[16]; /// Length of each subpacket
39
};
40
41
typedef struct {
42
    int nb_packets;
43
    int old_format;
44
    int current_stream;
45
    int remaining_len;
46 1edddc99 Ronald S. Bultje
    int audio_stream_num; ///< Stream number for audio packets
47
    int audio_pkt_cnt; ///< Output packet counter
48
} RMDemuxContext;
49 de6d9b64 Fabrice Bellard
50 36cf20f5 Ronald S. Bultje
static inline void get_strl(ByteIOContext *pb, char *buf, int buf_size, int len)
51 de6d9b64 Fabrice Bellard
{
52 36cf20f5 Ronald S. Bultje
    int i;
53 28263f5f Ronald S. Bultje
    char *q, r;
54 de6d9b64 Fabrice Bellard
55
    q = buf;
56
    for(i=0;i<len;i++) {
57 28263f5f Ronald S. Bultje
        r = get_byte(pb);
58 de6d9b64 Fabrice Bellard
        if (i < buf_size - 1)
59 28263f5f Ronald S. Bultje
            *q++ = r;
60 de6d9b64 Fabrice Bellard
    }
61 28263f5f Ronald S. Bultje
    if (buf_size > 0) *q = '\0';
62 de6d9b64 Fabrice Bellard
}
63
64 36cf20f5 Ronald S. Bultje
static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
65 de6d9b64 Fabrice Bellard
{
66 36cf20f5 Ronald S. Bultje
    get_strl(pb, buf, buf_size, get_be16(pb));
67
}
68 de6d9b64 Fabrice Bellard
69 36cf20f5 Ronald S. Bultje
static void get_str8(ByteIOContext *pb, char *buf, int buf_size)
70
{
71
    get_strl(pb, buf, buf_size, get_byte(pb));
72 de6d9b64 Fabrice Bellard
}
73
74 ba614729 Ronald S. Bultje
RMStream *ff_rm_alloc_rmstream (void)
75
{
76
    RMStream *rms = av_mallocz(sizeof(RMStream));
77
    rms->curpic_num = -1;
78
    return rms;
79
}
80
81
void ff_rm_free_rmstream (RMStream *rms)
82
{
83 0b4ff0c9 Michael Niedermayer
    av_free_packet(&rms->pkt);
84 ba614729 Ronald S. Bultje
}
85
86 fcc995a5 Ronald S. Bultje
static int rm_read_audio_stream_info(AVFormatContext *s, ByteIOContext *pb,
87 886e89d0 Ronald S. Bultje
                                     AVStream *st, RMStream *ast, int read_all)
88 c9510803 Fabrice Bellard
{
89 1e4668d1 Roberto Togni
    char buf[256];
90 c9510803 Fabrice Bellard
    uint32_t version;
91
92
    /* ra type header */
93
    version = get_be32(pb); /* version */
94
    if (((version >> 16) & 0xff) == 3) {
95 1e4668d1 Roberto Togni
        int64_t startpos = url_ftell(pb);
96 b9b2b8c9 Ronald S. Bultje
        url_fskip(pb, 14);
97 c9510803 Fabrice Bellard
        get_str8(pb, s->title, sizeof(s->title));
98
        get_str8(pb, s->author, sizeof(s->author));
99
        get_str8(pb, s->copyright, sizeof(s->copyright));
100
        get_str8(pb, s->comment, sizeof(s->comment));
101 1e4668d1 Roberto Togni
        if ((startpos + (version & 0xffff)) >= url_ftell(pb) + 2) {
102 76f940b2 Ronald S. Bultje
            // fourcc (should always be "lpcJ")
103
            get_byte(pb);
104
            get_str8(pb, buf, sizeof(buf));
105 1e4668d1 Roberto Togni
        }
106
        // Skip extra header crap (this should never happen)
107
        if ((startpos + (version & 0xffff)) > url_ftell(pb))
108
            url_fskip(pb, (version & 0xffff) + startpos - url_ftell(pb));
109 01f4895c Michael Niedermayer
        st->codec->sample_rate = 8000;
110
        st->codec->channels = 1;
111
        st->codec->codec_type = CODEC_TYPE_AUDIO;
112
        st->codec->codec_id = CODEC_ID_RA_144;
113 c9510803 Fabrice Bellard
    } else {
114 e0f7e329 Benjamin Larsson
        int flavor, sub_packet_h, coded_framesize, sub_packet_size;
115 c9510803 Fabrice Bellard
        /* old version (4) */
116
        get_be32(pb); /* .ra4 */
117 72aef198 Michael Niedermayer
        get_be32(pb); /* data size */
118
        get_be16(pb); /* version2 */
119 c9510803 Fabrice Bellard
        get_be32(pb); /* header size */
120 72aef198 Michael Niedermayer
        flavor= get_be16(pb); /* add codec info / flavor */
121 ba614729 Ronald S. Bultje
        ast->coded_framesize = coded_framesize = get_be32(pb); /* coded frame size */
122 c9510803 Fabrice Bellard
        get_be32(pb); /* ??? */
123
        get_be32(pb); /* ??? */
124
        get_be32(pb); /* ??? */
125 ba614729 Ronald S. Bultje
        ast->sub_packet_h = sub_packet_h = get_be16(pb); /* 1 */
126 01f4895c Michael Niedermayer
        st->codec->block_align= get_be16(pb); /* frame size */
127 ba614729 Ronald S. Bultje
        ast->sub_packet_size = sub_packet_size = get_be16(pb); /* sub packet size */
128 72aef198 Michael Niedermayer
        get_be16(pb); /* ??? */
129 e0f7e329 Benjamin Larsson
        if (((version >> 16) & 0xff) == 5) {
130 127ed7b0 Ronald S. Bultje
            get_be16(pb); get_be16(pb); get_be16(pb);
131
        }
132 01f4895c Michael Niedermayer
        st->codec->sample_rate = get_be16(pb);
133 c9510803 Fabrice Bellard
        get_be32(pb);
134 01f4895c Michael Niedermayer
        st->codec->channels = get_be16(pb);
135 e0f7e329 Benjamin Larsson
        if (((version >> 16) & 0xff) == 5) {
136
            get_be32(pb);
137 b9b2b8c9 Ronald S. Bultje
            get_buffer(pb, buf, 4);
138 bb270c08 Diego Biurrun
            buf[4] = 0;
139
        } else {
140 e344c1ea Steve L'Homme
            get_str8(pb, buf, sizeof(buf)); /* desc */
141
            get_str8(pb, buf, sizeof(buf)); /* desc */
142 bb270c08 Diego Biurrun
        }
143 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_AUDIO;
144 c9510803 Fabrice Bellard
        if (!strcmp(buf, "dnet")) {
145 01f4895c Michael Niedermayer
            st->codec->codec_id = CODEC_ID_AC3;
146 bf415121 Justin Ruggles
            st->need_parsing = AVSTREAM_PARSE_FULL;
147 72aef198 Michael Niedermayer
        } else if (!strcmp(buf, "28_8")) {
148 01f4895c Michael Niedermayer
            st->codec->codec_id = CODEC_ID_RA_288;
149 e0f7e329 Benjamin Larsson
            st->codec->extradata_size= 0;
150 ba614729 Ronald S. Bultje
            ast->audio_framesize = st->codec->block_align;
151 e0f7e329 Benjamin Larsson
            st->codec->block_align = coded_framesize;
152 a443a253 Michael Niedermayer
153 ba614729 Ronald S. Bultje
            if(ast->audio_framesize >= UINT_MAX / sub_packet_h){
154
                av_log(s, AV_LOG_ERROR, "ast->audio_framesize * sub_packet_h too large\n");
155 a443a253 Michael Niedermayer
                return -1;
156
            }
157
158 0b4ff0c9 Michael Niedermayer
            av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h);
159 2426bb96 Benjamin Larsson
        } else if ((!strcmp(buf, "cook")) || (!strcmp(buf, "atrc")) || (!strcmp(buf, "sipr"))) {
160 b9b2b8c9 Ronald S. Bultje
            int codecdata_length;
161 e0f7e329 Benjamin Larsson
            get_be16(pb); get_byte(pb);
162
            if (((version >> 16) & 0xff) == 5)
163
                get_byte(pb);
164
            codecdata_length = get_be32(pb);
165 a443a253 Michael Niedermayer
            if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
166
                av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
167
                return -1;
168
            }
169
170 f23938f5 Michael Niedermayer
            if(sub_packet_size <= 0){
171
                av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
172
                return -1;
173
            }
174
175 10e26bc7 Benjamin Larsson
            if (!strcmp(buf, "cook")) st->codec->codec_id = CODEC_ID_COOK;
176 2426bb96 Benjamin Larsson
            else if (!strcmp(buf, "sipr")) st->codec->codec_id = CODEC_ID_SIPR;
177 10e26bc7 Benjamin Larsson
            else st->codec->codec_id = CODEC_ID_ATRAC3;
178 e0f7e329 Benjamin Larsson
            st->codec->extradata_size= codecdata_length;
179 d76319b1 Jindřich Makovička
            st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
180 b9b2b8c9 Ronald S. Bultje
            get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
181 ba614729 Ronald S. Bultje
            ast->audio_framesize = st->codec->block_align;
182
            st->codec->block_align = ast->sub_packet_size;
183 a443a253 Michael Niedermayer
184 ba614729 Ronald S. Bultje
            if(ast->audio_framesize >= UINT_MAX / sub_packet_h){
185 a443a253 Michael Niedermayer
                av_log(s, AV_LOG_ERROR, "rm->audio_framesize * sub_packet_h too large\n");
186
                return -1;
187
            }
188
189 0b4ff0c9 Michael Niedermayer
            av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h);
190 a194f595 Roberto Togni
        } else if (!strcmp(buf, "raac") || !strcmp(buf, "racp")) {
191 b9b2b8c9 Ronald S. Bultje
            int codecdata_length;
192 a194f595 Roberto Togni
            get_be16(pb); get_byte(pb);
193
            if (((version >> 16) & 0xff) == 5)
194
                get_byte(pb);
195
            st->codec->codec_id = CODEC_ID_AAC;
196
            codecdata_length = get_be32(pb);
197 a9d4a6ef Roberto Togni
            if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
198
                av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
199
                return -1;
200
            }
201 a194f595 Roberto Togni
            if (codecdata_length >= 1) {
202
                st->codec->extradata_size = codecdata_length - 1;
203
                st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
204
                get_byte(pb);
205 b9b2b8c9 Ronald S. Bultje
                get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
206 a194f595 Roberto Togni
            }
207 c9510803 Fabrice Bellard
        } else {
208 01f4895c Michael Niedermayer
            st->codec->codec_id = CODEC_ID_NONE;
209 75e61b0e Måns Rullgård
            av_strlcpy(st->codec->codec_name, buf, sizeof(st->codec->codec_name));
210 c9510803 Fabrice Bellard
        }
211
        if (read_all) {
212
            get_byte(pb);
213
            get_byte(pb);
214
            get_byte(pb);
215 115329f1 Diego Biurrun
216 c9510803 Fabrice Bellard
            get_str8(pb, s->title, sizeof(s->title));
217
            get_str8(pb, s->author, sizeof(s->author));
218
            get_str8(pb, s->copyright, sizeof(s->copyright));
219
            get_str8(pb, s->comment, sizeof(s->comment));
220
        }
221
    }
222 a9d4a6ef Roberto Togni
    return 0;
223 c9510803 Fabrice Bellard
}
224
225 0fd36362 Ronald S. Bultje
int
226 fcc995a5 Ronald S. Bultje
ff_rm_read_mdpr_codecdata (AVFormatContext *s, ByteIOContext *pb,
227 886e89d0 Ronald S. Bultje
                           AVStream *st, RMStream *rst, int codec_data_size)
228 ff1463dc Ronald S. Bultje
{
229
    unsigned int v;
230 79d5045d Ronald S. Bultje
    int size;
231 ff1463dc Ronald S. Bultje
    int64_t codec_pos;
232
233 15995030 Ronald S. Bultje
    av_set_pts_info(st, 64, 1, 1000);
234 ff1463dc Ronald S. Bultje
    codec_pos = url_ftell(pb);
235
    v = get_be32(pb);
236
    if (v == MKTAG(0xfd, 'a', 'r', '.')) {
237
        /* ra type header */
238 886e89d0 Ronald S. Bultje
        if (rm_read_audio_stream_info(s, pb, st, rst, 0))
239 ff1463dc Ronald S. Bultje
            return -1;
240
    } else {
241
        int fps, fps2;
242
        if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) {
243
        fail1:
244
            av_log(st->codec, AV_LOG_ERROR, "Unsupported video codec\n");
245
            goto skip;
246
        }
247
        st->codec->codec_tag = get_le32(pb);
248
//        av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
249
        if (   st->codec->codec_tag != MKTAG('R', 'V', '1', '0')
250
            && st->codec->codec_tag != MKTAG('R', 'V', '2', '0')
251
            && st->codec->codec_tag != MKTAG('R', 'V', '3', '0')
252 b93dd838 Vitor Sessak
            && st->codec->codec_tag != MKTAG('R', 'V', '4', '0')
253
            && st->codec->codec_tag != MKTAG('R', 'V', 'T', 'R'))
254 ff1463dc Ronald S. Bultje
            goto fail1;
255
        st->codec->width = get_be16(pb);
256
        st->codec->height = get_be16(pb);
257
        st->codec->time_base.num= 1;
258
        fps= get_be16(pb);
259
        st->codec->codec_type = CODEC_TYPE_VIDEO;
260
        get_be32(pb);
261
        fps2= get_be16(pb);
262
        get_be16(pb);
263
264
        st->codec->extradata_size= codec_data_size - (url_ftell(pb) - codec_pos);
265
266
        if(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){
267
            //check is redundant as get_buffer() will catch this
268
            av_log(s, AV_LOG_ERROR, "st->codec->extradata_size too large\n");
269
            return -1;
270
        }
271
        st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
272 437fd77b Panagiotis Issaris
        if (!st->codec->extradata)
273
            return AVERROR(ENOMEM);
274 ff1463dc Ronald S. Bultje
        get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
275
276
//        av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2);
277
        st->codec->time_base.den = fps * st->codec->time_base.num;
278
        switch(((uint8_t*)st->codec->extradata)[4]>>4){
279
        case 1: st->codec->codec_id = CODEC_ID_RV10; break;
280
        case 2: st->codec->codec_id = CODEC_ID_RV20; break;
281
        case 3: st->codec->codec_id = CODEC_ID_RV30; break;
282
        case 4: st->codec->codec_id = CODEC_ID_RV40; break;
283
        default: goto fail1;
284
        }
285
    }
286
287
skip:
288
    /* skip codec info */
289
    size = url_ftell(pb) - codec_pos;
290
    url_fskip(pb, codec_data_size - size);
291
292 36c9e40a Benoit Fouet
    return 0;
293 ff1463dc Ronald S. Bultje
}
294
295
296 c9510803 Fabrice Bellard
static int rm_read_header_old(AVFormatContext *s, AVFormatParameters *ap)
297
{
298 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
299 c9510803 Fabrice Bellard
    AVStream *st;
300
301
    rm->old_format = 1;
302
    st = av_new_stream(s, 0);
303
    if (!st)
304 a9d4a6ef Roberto Togni
        return -1;
305 886e89d0 Ronald S. Bultje
    st->priv_data = ff_rm_alloc_rmstream();
306
    return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
307 c9510803 Fabrice Bellard
}
308
309 de6d9b64 Fabrice Bellard
static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
310
{
311 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
312 de6d9b64 Fabrice Bellard
    AVStream *st;
313 899681cd Björn Axelsson
    ByteIOContext *pb = s->pb;
314 ff1463dc Ronald S. Bultje
    unsigned int tag;
315 07cb073b Diego Biurrun
    int tag_size;
316 36c32bdd Diego Biurrun
    unsigned int start_time, duration;
317 de6d9b64 Fabrice Bellard
    char buf[128];
318 5d6ef63f Philip Gladstone
    int flags = 0;
319 de6d9b64 Fabrice Bellard
320 c9510803 Fabrice Bellard
    tag = get_le32(pb);
321
    if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
322
        /* very old .ra format */
323
        return rm_read_header_old(s, ap);
324
    } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
325 6f3e0b21 Panagiotis Issaris
        return AVERROR(EIO);
326 c9510803 Fabrice Bellard
    }
327 de6d9b64 Fabrice Bellard
328
    get_be32(pb); /* header size */
329
    get_be16(pb);
330
    get_be32(pb);
331
    get_be32(pb); /* number of headers */
332 115329f1 Diego Biurrun
333 de6d9b64 Fabrice Bellard
    for(;;) {
334
        if (url_feof(pb))
335 ccafd472 Baptiste Coudurier
            return -1;
336 de6d9b64 Fabrice Bellard
        tag = get_le32(pb);
337
        tag_size = get_be32(pb);
338
        get_be16(pb);
339
#if 0
340 115329f1 Diego Biurrun
        printf("tag=%c%c%c%c (%08x) size=%d\n",
341 de6d9b64 Fabrice Bellard
               (tag) & 0xff,
342
               (tag >> 8) & 0xff,
343
               (tag >> 16) & 0xff,
344
               (tag >> 24) & 0xff,
345
               tag,
346
               tag_size);
347
#endif
348 9786bd4d Michael Niedermayer
        if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
349 ccafd472 Baptiste Coudurier
            return -1;
350 de6d9b64 Fabrice Bellard
        switch(tag) {
351
        case MKTAG('P', 'R', 'O', 'P'):
352
            /* file header */
353
            get_be32(pb); /* max bit rate */
354
            get_be32(pb); /* avg bit rate */
355
            get_be32(pb); /* max packet size */
356
            get_be32(pb); /* avg packet size */
357
            get_be32(pb); /* nb packets */
358
            get_be32(pb); /* duration */
359
            get_be32(pb); /* preroll */
360
            get_be32(pb); /* index offset */
361
            get_be32(pb); /* data offset */
362
            get_be16(pb); /* nb streams */
363 5d6ef63f Philip Gladstone
            flags = get_be16(pb); /* flags */
364 de6d9b64 Fabrice Bellard
            break;
365
        case MKTAG('C', 'O', 'N', 'T'):
366 36cf20f5 Ronald S. Bultje
            get_str16(pb, s->title, sizeof(s->title));
367
            get_str16(pb, s->author, sizeof(s->author));
368
            get_str16(pb, s->copyright, sizeof(s->copyright));
369
            get_str16(pb, s->comment, sizeof(s->comment));
370 de6d9b64 Fabrice Bellard
            break;
371
        case MKTAG('M', 'D', 'P', 'R'):
372 247eadca Fabrice Bellard
            st = av_new_stream(s, 0);
373 de6d9b64 Fabrice Bellard
            if (!st)
374 ccafd472 Baptiste Coudurier
                return AVERROR(ENOMEM);
375 de6d9b64 Fabrice Bellard
            st->id = get_be16(pb);
376
            get_be32(pb); /* max bit rate */
377 01f4895c Michael Niedermayer
            st->codec->bit_rate = get_be32(pb); /* bit rate */
378 de6d9b64 Fabrice Bellard
            get_be32(pb); /* max packet size */
379
            get_be32(pb); /* avg packet size */
380 247eadca Fabrice Bellard
            start_time = get_be32(pb); /* start time */
381 de6d9b64 Fabrice Bellard
            get_be32(pb); /* preroll */
382 247eadca Fabrice Bellard
            duration = get_be32(pb); /* duration */
383 c0df9d75 Michael Niedermayer
            st->start_time = start_time;
384
            st->duration = duration;
385 de6d9b64 Fabrice Bellard
            get_str8(pb, buf, sizeof(buf)); /* desc */
386
            get_str8(pb, buf, sizeof(buf)); /* mimetype */
387 01f4895c Michael Niedermayer
            st->codec->codec_type = CODEC_TYPE_DATA;
388 886e89d0 Ronald S. Bultje
            st->priv_data = ff_rm_alloc_rmstream();
389
            if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
390
                                          get_be32(pb)) < 0)
391 ff1463dc Ronald S. Bultje
                return -1;
392 de6d9b64 Fabrice Bellard
            break;
393
        case MKTAG('D', 'A', 'T', 'A'):
394
            goto header_end;
395
        default:
396
            /* unknown tag: skip it */
397
            url_fskip(pb, tag_size - 10);
398
            break;
399
        }
400
    }
401
 header_end:
402
    rm->nb_packets = get_be32(pb); /* number of packets */
403 5d6ef63f Philip Gladstone
    if (!rm->nb_packets && (flags & 4))
404
        rm->nb_packets = 3600 * 25;
405 de6d9b64 Fabrice Bellard
    get_be32(pb); /* next data header */
406
    return 0;
407
}
408
409 4c2bc159 Michael Niedermayer
static int get_num(ByteIOContext *pb, int *len)
410
{
411
    int n, n1;
412
413
    n = get_be16(pb);
414
    (*len)-=2;
415 e3052ce7 Roberto Togni
    n &= 0x7FFF;
416 4c2bc159 Michael Niedermayer
    if (n >= 0x4000) {
417
        return n - 0x4000;
418
    } else {
419
        n1 = get_be16(pb);
420
        (*len)-=2;
421
        return (n << 16) | n1;
422
    }
423
}
424
425 c9510803 Fabrice Bellard
/* multiple of 20 bytes for ra144 (ugly) */
426
#define RAW_PACKET_SIZE 1000
427
428 37e85dac Michael Niedermayer
static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
429 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
430 899681cd Björn Axelsson
    ByteIOContext *pb = s->pb;
431 bc17df09 Michael Niedermayer
    int len, num, res, i;
432
    AVStream *st;
433 119cebf4 Michael Niedermayer
    uint32_t state=0xFFFFFFFF;
434 bc17df09 Michael Niedermayer
435
    while(!url_feof(pb)){
436 fd31550d Michael Niedermayer
        *pos= url_ftell(pb) - 3;
437 bc17df09 Michael Niedermayer
        if(rm->remaining_len > 0){
438
            num= rm->current_stream;
439
            len= rm->remaining_len;
440
            *timestamp = AV_NOPTS_VALUE;
441
            *flags= 0;
442
        }else{
443 119cebf4 Michael Niedermayer
            state= (state<<8) + get_byte(pb);
444 115329f1 Diego Biurrun
445 119cebf4 Michael Niedermayer
            if(state == MKBETAG('I', 'N', 'D', 'X')){
446
                len = get_be16(pb) - 6;
447
                if(len<0)
448
                    continue;
449
                goto skip;
450
            }
451 115329f1 Diego Biurrun
452 119cebf4 Michael Niedermayer
            if(state > (unsigned)0xFFFF || state < 12)
453 bc17df09 Michael Niedermayer
                continue;
454 119cebf4 Michael Niedermayer
            len=state;
455
            state= 0xFFFFFFFF;
456
457 bc17df09 Michael Niedermayer
            num = get_be16(pb);
458
            *timestamp = get_be32(pb);
459
            res= get_byte(pb); /* reserved */
460
            *flags = get_byte(pb); /* flags */
461 37e85dac Michael Niedermayer
462 115329f1 Diego Biurrun
463 bc17df09 Michael Niedermayer
            len -= 12;
464
        }
465
        for(i=0;i<s->nb_streams;i++) {
466
            st = s->streams[i];
467
            if (num == st->id)
468
                break;
469
        }
470
        if (i == s->nb_streams) {
471 119cebf4 Michael Niedermayer
skip:
472 bc17df09 Michael Niedermayer
            /* skip packet if unknown number */
473
            url_fskip(pb, len);
474
            rm->remaining_len -= len;
475
            continue;
476
        }
477
        *stream_index= i;
478 115329f1 Diego Biurrun
479 bc17df09 Michael Niedermayer
        return len;
480
    }
481
    return -1;
482
}
483
484 fcc995a5 Ronald S. Bultje
static int rm_assemble_video_frame(AVFormatContext *s, ByteIOContext *pb,
485 ba614729 Ronald S. Bultje
                                   RMDemuxContext *rm, RMStream *vst,
486
                                   AVPacket *pkt, int len)
487 383b123e Kostya Shishkov
{
488
    int hdr, seq, pic_num, len2, pos;
489
    int type;
490
491
    hdr = get_byte(pb); len--;
492
    type = hdr >> 6;
493 f48d5457 Michael Niedermayer
494
    if(type != 3){  // not frame as a part of packet
495 383b123e Kostya Shishkov
        seq = get_byte(pb); len--;
496 f48d5457 Michael Niedermayer
    }
497
    if(type != 1){  // not whole frame
498 383b123e Kostya Shishkov
        len2 = get_num(pb, &len);
499 f48d5457 Michael Niedermayer
        pos  = get_num(pb, &len);
500 383b123e Kostya Shishkov
        pic_num = get_byte(pb); len--;
501 f48d5457 Michael Niedermayer
    }
502
    if(len<0)
503
        return -1;
504
    rm->remaining_len = len;
505
    if(type&1){     // frame, not slice
506
        if(type == 3)  // frame as a part of packet
507
            len= len2;
508
        if(rm->remaining_len < len)
509 e45673cb Michael Niedermayer
            return -1;
510 f48d5457 Michael Niedermayer
        rm->remaining_len -= len;
511 383b123e Kostya Shishkov
        if(av_new_packet(pkt, len + 9) < 0)
512
            return AVERROR(EIO);
513
        pkt->data[0] = 0;
514
        AV_WL32(pkt->data + 1, 1);
515
        AV_WL32(pkt->data + 5, 0);
516
        get_buffer(pb, pkt->data + 9, len);
517
        return 0;
518
    }
519
    //now we have to deal with single slice
520
521 ba614729 Ronald S. Bultje
    if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
522
        vst->slices = ((hdr & 0x3F) << 1) + 1;
523
        vst->videobufsize = len2 + 8*vst->slices + 1;
524 0b4ff0c9 Michael Niedermayer
        av_free_packet(&vst->pkt); //FIXME this should be output.
525
        if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
526 52537534 Roberto Togni
            return AVERROR(ENOMEM);
527 ba614729 Ronald S. Bultje
        vst->videobufpos = 8*vst->slices + 1;
528
        vst->cur_slice = 0;
529
        vst->curpic_num = pic_num;
530
        vst->pktpos = url_ftell(pb);
531 383b123e Kostya Shishkov
    }
532 e35033e6 Roberto Togni
    if(type == 2)
533 383b123e Kostya Shishkov
        len = FFMIN(len, pos);
534
535 ba614729 Ronald S. Bultje
    if(++vst->cur_slice > vst->slices)
536 383b123e Kostya Shishkov
        return 1;
537 0b4ff0c9 Michael Niedermayer
    AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
538
    AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
539 ba614729 Ronald S. Bultje
    if(vst->videobufpos + len > vst->videobufsize)
540 383b123e Kostya Shishkov
        return 1;
541 0b4ff0c9 Michael Niedermayer
    if (get_buffer(pb, vst->pkt.data + vst->videobufpos, len) != len)
542 383b123e Kostya Shishkov
        return AVERROR(EIO);
543 ba614729 Ronald S. Bultje
    vst->videobufpos += len;
544 383b123e Kostya Shishkov
    rm->remaining_len-= len;
545
546 ba614729 Ronald S. Bultje
    if(type == 2 || (vst->videobufpos) == vst->videobufsize){
547 188e67ea Michael Niedermayer
        vst->pkt.data[0] = vst->cur_slice-1;
548
        *pkt= vst->pkt;
549 6fde7afa Dominique Leuenberger
        vst->pkt.data= NULL;
550 188e67ea Michael Niedermayer
        vst->pkt.size= 0;
551
        if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
552 0b4ff0c9 Michael Niedermayer
            memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
553 ba614729 Ronald S. Bultje
                vst->videobufpos - 1 - 8*vst->slices);
554 ce0453aa Michael Niedermayer
        pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
555 188e67ea Michael Niedermayer
        pkt->pts = AV_NOPTS_VALUE;
556
        pkt->pos = vst->pktpos;
557
        return 0;
558 383b123e Kostya Shishkov
    }
559
560
    return 1;
561
}
562
563 5c470b91 Ronald S. Bultje
static inline void
564
rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
565
{
566
    uint8_t *ptr;
567
    int j;
568
569
    if (st->codec->codec_id == CODEC_ID_AC3) {
570
        ptr = pkt->data;
571
        for (j=0;j<pkt->size;j+=2) {
572
            FFSWAP(int, ptr[0], ptr[1]);
573
            ptr += 2;
574
        }
575
    }
576
}
577
578 0fd36362 Ronald S. Bultje
int
579 fcc995a5 Ronald S. Bultje
ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
580 886e89d0 Ronald S. Bultje
                    AVStream *st, RMStream *ast, int len, AVPacket *pkt,
581 afd302fa Ronald S. Bultje
                    int *seq, int *flags, int64_t *timestamp)
582
{
583 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
584 afd302fa Ronald S. Bultje
585
    if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
586
        rm->current_stream= st->id;
587 51d6852f Michael Niedermayer
        if(rm_assemble_video_frame(s, pb, rm, ast, pkt, len))
588 afd302fa Ronald S. Bultje
            return -1; //got partial frame
589
    } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
590
        if ((st->codec->codec_id == CODEC_ID_RA_288) ||
591
            (st->codec->codec_id == CODEC_ID_COOK) ||
592 2426bb96 Benjamin Larsson
            (st->codec->codec_id == CODEC_ID_ATRAC3) ||
593
            (st->codec->codec_id == CODEC_ID_SIPR)) {
594 afd302fa Ronald S. Bultje
            int x;
595 ba614729 Ronald S. Bultje
            int sps = ast->sub_packet_size;
596
            int cfs = ast->coded_framesize;
597
            int h = ast->sub_packet_h;
598
            int y = ast->sub_packet_cnt;
599
            int w = ast->audio_framesize;
600 afd302fa Ronald S. Bultje
601
            if (*flags & 2)
602 ba614729 Ronald S. Bultje
                y = ast->sub_packet_cnt = 0;
603 afd302fa Ronald S. Bultje
            if (!y)
604 ba614729 Ronald S. Bultje
                ast->audiotimestamp = *timestamp;
605 afd302fa Ronald S. Bultje
606
            switch(st->codec->codec_id) {
607
                case CODEC_ID_RA_288:
608
                    for (x = 0; x < h/2; x++)
609 0b4ff0c9 Michael Niedermayer
                        get_buffer(pb, ast->pkt.data+x*2*w+y*cfs, cfs);
610 afd302fa Ronald S. Bultje
                    break;
611
                case CODEC_ID_ATRAC3:
612
                case CODEC_ID_COOK:
613
                    for (x = 0; x < w/sps; x++)
614 0b4ff0c9 Michael Niedermayer
                        get_buffer(pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
615 afd302fa Ronald S. Bultje
                    break;
616
            }
617
618 ba614729 Ronald S. Bultje
            if (++(ast->sub_packet_cnt) < h)
619 afd302fa Ronald S. Bultje
                return -1;
620
            else {
621 ba614729 Ronald S. Bultje
                ast->sub_packet_cnt = 0;
622 afd302fa Ronald S. Bultje
                rm->audio_stream_num = st->index;
623
                rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
624
                // Release first audio packet
625
                av_new_packet(pkt, st->codec->block_align);
626 0b4ff0c9 Michael Niedermayer
                memcpy(pkt->data, ast->pkt.data, st->codec->block_align); //FIXME avoid this
627 ba614729 Ronald S. Bultje
                *timestamp = ast->audiotimestamp;
628 afd302fa Ronald S. Bultje
                *flags = 2; // Mark first packet as keyframe
629
            }
630
        } else if (st->codec->codec_id == CODEC_ID_AAC) {
631
            int x;
632
            rm->audio_stream_num = st->index;
633 ba614729 Ronald S. Bultje
            ast->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
634
            if (ast->sub_packet_cnt) {
635
                for (x = 0; x < ast->sub_packet_cnt; x++)
636
                    ast->sub_packet_lengths[x] = get_be16(pb);
637 afd302fa Ronald S. Bultje
                // Release first audio packet
638 ba614729 Ronald S. Bultje
                rm->audio_pkt_cnt = ast->sub_packet_cnt - 1;
639
                av_get_packet(pb, pkt, ast->sub_packet_lengths[0]);
640 afd302fa Ronald S. Bultje
                *flags = 2; // Mark first packet as keyframe
641
            }
642 badbe09a Roberto Togni
        } else {
643 afd302fa Ronald S. Bultje
            av_get_packet(pb, pkt, len);
644 e29378ff Roberto Togni
            rm_ac3_swap_bytes(st, pkt);
645 badbe09a Roberto Togni
        }
646 afd302fa Ronald S. Bultje
    } else
647
        av_get_packet(pb, pkt, len);
648
649
    if(  (st->discard >= AVDISCARD_NONKEY && !(*flags&2))
650
       || st->discard >= AVDISCARD_ALL){
651
        av_free_packet(pkt);
652
        return -1;
653
    }
654
655
    pkt->stream_index = st->index;
656
657
#if 0
658
    if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
659
        if(st->codec->codec_id == CODEC_ID_RV20){
660
            int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
661
            av_log(NULL, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
662

663
            seq |= (*timestamp&~0x3FFF);
664
            if(seq - *timestamp >  0x2000) seq -= 0x4000;
665
            if(seq - *timestamp < -0x2000) seq += 0x4000;
666
        }
667
    }
668
#endif
669
670
    pkt->pts= *timestamp;
671
    if (*flags & 2)
672
        pkt->flags |= PKT_FLAG_KEY;
673
674 a15ebf34 Ronald S. Bultje
    return st->codec->codec_type == CODEC_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
675 afd302fa Ronald S. Bultje
}
676
677 a9f84821 Ronald S. Bultje
int
678 fcc995a5 Ronald S. Bultje
ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
679 886e89d0 Ronald S. Bultje
                      AVStream *st, RMStream *ast, AVPacket *pkt)
680 d4d1b5fb Ronald S. Bultje
{
681 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
682 d4d1b5fb Ronald S. Bultje
683
    assert (rm->audio_pkt_cnt > 0);
684
685
    if (st->codec->codec_id == CODEC_ID_AAC)
686 ba614729 Ronald S. Bultje
        av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
687 d4d1b5fb Ronald S. Bultje
    else {
688
        av_new_packet(pkt, st->codec->block_align);
689 0b4ff0c9 Michael Niedermayer
        memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
690 ba614729 Ronald S. Bultje
               (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
691 d4d1b5fb Ronald S. Bultje
               st->codec->block_align);
692
    }
693
    rm->audio_pkt_cnt--;
694
    pkt->flags = 0;
695
    pkt->stream_index = st->index;
696 a9f84821 Ronald S. Bultje
697
    return rm->audio_pkt_cnt;
698 d4d1b5fb Ronald S. Bultje
}
699
700 de6d9b64 Fabrice Bellard
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
701
{
702 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
703 899681cd Björn Axelsson
    ByteIOContext *pb = s->pb;
704 de6d9b64 Fabrice Bellard
    AVStream *st;
705 5c470b91 Ronald S. Bultje
    int i, len;
706 37e85dac Michael Niedermayer
    int64_t timestamp, pos;
707 bc17df09 Michael Niedermayer
    int flags;
708 de6d9b64 Fabrice Bellard
709 c69e7914 Roberto Togni
    if (rm->audio_pkt_cnt) {
710 e0f7e329 Benjamin Larsson
        // If there are queued audio packet return them first
711
        st = s->streams[rm->audio_stream_num];
712 886e89d0 Ronald S. Bultje
        ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
713 c69e7914 Roberto Togni
    } else if (rm->old_format) {
714 ba614729 Ronald S. Bultje
        RMStream *ast;
715
716 c69e7914 Roberto Togni
        st = s->streams[0];
717 ba614729 Ronald S. Bultje
        ast = st->priv_data;
718 c69e7914 Roberto Togni
        if (st->codec->codec_id == CODEC_ID_RA_288) {
719
            int x, y;
720
721 ba614729 Ronald S. Bultje
            for (y = 0; y < ast->sub_packet_h; y++)
722
                for (x = 0; x < ast->sub_packet_h/2; x++)
723 0b4ff0c9 Michael Niedermayer
                    if (get_buffer(pb, ast->pkt.data+x*2*ast->audio_framesize+y*ast->coded_framesize, ast->coded_framesize) <= 0)
724 6f3e0b21 Panagiotis Issaris
                        return AVERROR(EIO);
725 c69e7914 Roberto Togni
            rm->audio_stream_num = 0;
726 ba614729 Ronald S. Bultje
            rm->audio_pkt_cnt = ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - 1;
727 c69e7914 Roberto Togni
            // Release first audio packet
728
            av_new_packet(pkt, st->codec->block_align);
729 0b4ff0c9 Michael Niedermayer
            memcpy(pkt->data, ast->pkt.data, st->codec->block_align); //FIXME avoid this
730 c69e7914 Roberto Togni
            pkt->flags |= PKT_FLAG_KEY; // Mark first packet as keyframe
731
            pkt->stream_index = 0;
732
        } else {
733
            /* just read raw bytes */
734
            len = RAW_PACKET_SIZE;
735
            len= av_get_packet(pb, pkt, len);
736
            pkt->stream_index = 0;
737
            if (len <= 0) {
738 6f3e0b21 Panagiotis Issaris
                return AVERROR(EIO);
739 c69e7914 Roberto Togni
            }
740
            pkt->size = len;
741
        }
742 e29378ff Roberto Togni
        rm_ac3_swap_bytes(st, pkt);
743 c9510803 Fabrice Bellard
    } else {
744 37e85dac Michael Niedermayer
        int seq=1;
745 b9866ebc Michael Niedermayer
resync:
746 37e85dac Michael Niedermayer
        len=sync(s, &timestamp, &flags, &i, &pos);
747 bc17df09 Michael Niedermayer
        if(len<0)
748 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
749 bc17df09 Michael Niedermayer
        st = s->streams[i];
750
751 886e89d0 Ronald S. Bultje
        if (ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
752
                                &seq, &flags, &timestamp) < 0)
753 b9866ebc Michael Niedermayer
            goto resync;
754 d880240e Michael Niedermayer
755 9b41eb37 Diego Biurrun
        if((flags&2) && (seq&0x7F) == 1)
756 8f8fae80 Diego Biurrun
            av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
757 5d6ef63f Philip Gladstone
    }
758
759 de6d9b64 Fabrice Bellard
    return 0;
760
}
761
762
static int rm_read_close(AVFormatContext *s)
763
{
764 ba614729 Ronald S. Bultje
    int i;
765
766
    for (i=0;i<s->nb_streams;i++)
767
        ff_rm_free_rmstream(s->streams[i]->priv_data);
768 e0f7e329 Benjamin Larsson
769 de6d9b64 Fabrice Bellard
    return 0;
770
}
771
772 c9a65ca8 Fabrice Bellard
static int rm_probe(AVProbeData *p)
773
{
774
    /* check file header */
775 c9510803 Fabrice Bellard
    if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
776
         p->buf[2] == 'M' && p->buf[3] == 'F' &&
777
         p->buf[4] == 0 && p->buf[5] == 0) ||
778
        (p->buf[0] == '.' && p->buf[1] == 'r' &&
779
         p->buf[2] == 'a' && p->buf[3] == 0xfd))
780 c9a65ca8 Fabrice Bellard
        return AVPROBE_SCORE_MAX;
781
    else
782
        return 0;
783
}
784
785 115329f1 Diego Biurrun
static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
786 bc17df09 Michael Niedermayer
                               int64_t *ppos, int64_t pos_limit)
787
{
788 1edddc99 Ronald S. Bultje
    RMDemuxContext *rm = s->priv_data;
789 bc17df09 Michael Niedermayer
    int64_t pos, dts;
790 37e85dac Michael Niedermayer
    int stream_index2, flags, len, h;
791 bc17df09 Michael Niedermayer
792
    pos = *ppos;
793 115329f1 Diego Biurrun
794 bc17df09 Michael Niedermayer
    if(rm->old_format)
795
        return AV_NOPTS_VALUE;
796
797 899681cd Björn Axelsson
    url_fseek(s->pb, pos, SEEK_SET);
798 bc17df09 Michael Niedermayer
    rm->remaining_len=0;
799
    for(;;){
800 37e85dac Michael Niedermayer
        int seq=1;
801
        AVStream *st;
802
803
        len=sync(s, &dts, &flags, &stream_index2, &pos);
804 bc17df09 Michael Niedermayer
        if(len<0)
805
            return AV_NOPTS_VALUE;
806 37e85dac Michael Niedermayer
807
        st = s->streams[stream_index2];
808 01f4895c Michael Niedermayer
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
809 899681cd Björn Axelsson
            h= get_byte(s->pb); len--;
810 37e85dac Michael Niedermayer
            if(!(h & 0x40)){
811 899681cd Björn Axelsson
                seq = get_byte(s->pb); len--;
812 bc17df09 Michael Niedermayer
            }
813
        }
814 115329f1 Diego Biurrun
815 37e85dac Michael Niedermayer
        if((flags&2) && (seq&0x7F) == 1){
816 949b1a13 Steve L'Homme
//            av_log(s, AV_LOG_DEBUG, "%d %d-%d %"PRId64" %d\n", flags, stream_index2, stream_index, dts, seq);
817 30a43f2d Michael Niedermayer
            av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
818 37e85dac Michael Niedermayer
            if(stream_index2 == stream_index)
819
                break;
820
        }
821
822 899681cd Björn Axelsson
        url_fskip(s->pb, len);
823 bc17df09 Michael Niedermayer
    }
824
    *ppos = pos;
825
    return dts;
826
}
827
828 ff70e601 Måns Rullgård
AVInputFormat rm_demuxer = {
829 c9a65ca8 Fabrice Bellard
    "rm",
830 bde15e74 Stefano Sabatini
    NULL_IF_CONFIG_SMALL("RM format"),
831 1edddc99 Ronald S. Bultje
    sizeof(RMDemuxContext),
832 c9a65ca8 Fabrice Bellard
    rm_probe,
833
    rm_read_header,
834
    rm_read_packet,
835
    rm_read_close,
836 bc17df09 Michael Niedermayer
    NULL,
837
    rm_read_dts,
838 c9a65ca8 Fabrice Bellard
};
839 ff13ba92 Ronald S. Bultje
840
AVInputFormat rdt_demuxer = {
841
    "rdt",
842
    NULL_IF_CONFIG_SMALL("RDT demuxer"),
843 1edddc99 Ronald S. Bultje
    sizeof(RMDemuxContext),
844 ff13ba92 Ronald S. Bultje
    NULL, NULL, NULL, rm_read_close, NULL, NULL
845
};