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ffmpeg / libavformat / asf.c @ 470bce2b

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1 de6d9b64 Fabrice Bellard
/*
2 7fbde343 Aurelien Jacobs
 * ASF 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/common.h"
23
#include "libavcodec/mpegaudio.h"
24 de6d9b64 Fabrice Bellard
#include "avformat.h"
25 9d9f4119 Måns Rullgård
#include "riff.h"
26 542993b0 Konstantin Andreyev
#include "asf.h"
27 72be7db4 Reimar Döffinger
#include "asfcrypt.h"
28 de6d9b64 Fabrice Bellard
29 9686df2b Diego Biurrun
void ff_mms_set_stream_selection(URLContext *h, AVFormatContext *format);
30 49ce700a Björn Axelsson
31 580fb5e7 Michael Niedermayer
#undef NDEBUG
32
#include <assert.h>
33
34 615b92fd Konstantin Andreyev
#define FRAME_HEADER_SIZE 17
35 115329f1 Diego Biurrun
// Fix Me! FRAME_HEADER_SIZE may be different.
36 615b92fd Konstantin Andreyev
37 de6d9b64 Fabrice Bellard
static const GUID index_guid = {
38 24c14d6d Michael Niedermayer
    0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
39 de6d9b64 Fabrice Bellard
};
40
41 0e3b6a6f Ryan Martell
static const GUID stream_bitrate_guid = { /* (http://get.to/sdp) */
42
    0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
43
};
44 de6d9b64 Fabrice Bellard
/**********************************/
45
/* decoding */
46
47
//#define DEBUG
48
49
#ifdef DEBUG
50 5082f759 François Revol
#define PRINT_IF_GUID(g,cmp) \
51
if (!memcmp(g, &cmp, sizeof(GUID))) \
52 f94981ea Måns Rullgård
    dprintf(NULL, "(GUID: %s) ", #cmp)
53 5082f759 François Revol
54 de6d9b64 Fabrice Bellard
static void print_guid(const GUID *g)
55
{
56
    int i;
57 5082f759 François Revol
    PRINT_IF_GUID(g, asf_header);
58
    else PRINT_IF_GUID(g, file_header);
59
    else PRINT_IF_GUID(g, stream_header);
60
    else PRINT_IF_GUID(g, audio_stream);
61
    else PRINT_IF_GUID(g, audio_conceal_none);
62
    else PRINT_IF_GUID(g, video_stream);
63
    else PRINT_IF_GUID(g, video_conceal_none);
64 ae38261e Mike Brown
    else PRINT_IF_GUID(g, command_stream);
65 5082f759 François Revol
    else PRINT_IF_GUID(g, comment_header);
66
    else PRINT_IF_GUID(g, codec_comment_header);
67
    else PRINT_IF_GUID(g, codec_comment1_header);
68
    else PRINT_IF_GUID(g, data_header);
69
    else PRINT_IF_GUID(g, index_guid);
70
    else PRINT_IF_GUID(g, head1_guid);
71
    else PRINT_IF_GUID(g, head2_guid);
72
    else PRINT_IF_GUID(g, my_guid);
73 88141c91 Michael Niedermayer
    else PRINT_IF_GUID(g, ext_stream_header);
74
    else PRINT_IF_GUID(g, extended_content_header);
75
    else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
76
    else PRINT_IF_GUID(g, ext_stream_audio_stream);
77 30e88789 Michael Niedermayer
    else PRINT_IF_GUID(g, metadata_header);
78 0e3b6a6f Ryan Martell
    else PRINT_IF_GUID(g, stream_bitrate_guid);
79 5082f759 François Revol
    else
80 f94981ea Måns Rullgård
        dprintf(NULL, "(GUID: unknown) ");
81 24c14d6d Michael Niedermayer
    for(i=0;i<16;i++)
82 f94981ea Måns Rullgård
        dprintf(NULL, " 0x%02x,", (*g)[i]);
83
    dprintf(NULL, "}\n");
84 de6d9b64 Fabrice Bellard
}
85 6df84c3a Alex Beregszaszi
#undef PRINT_IF_GUID
86 f94981ea Måns Rullgård
#else
87
#define print_guid(g)
88 de6d9b64 Fabrice Bellard
#endif
89
90
static void get_guid(ByteIOContext *s, GUID *g)
91
{
92 24c14d6d Michael Niedermayer
    assert(sizeof(*g) == 16);
93 3dc761a4 Baptiste Coudurier
    get_buffer(s, *g, sizeof(*g));
94 de6d9b64 Fabrice Bellard
}
95
96
#if 0
97
static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
98
{
99
    int len, c;
100
    char *q;
101

102
    len = get_le16(pb);
103
    q = buf;
104
    while (len > 0) {
105
        c = get_le16(pb);
106
        if ((q - buf) < buf_size - 1)
107
            *q++ = c;
108
        len--;
109
    }
110
    *q = '\0';
111
}
112
#endif
113
114
static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
115
{
116 db5c43b4 Zuxy Meng
    char* q = buf;
117
    len /= 2;
118
    while (len--) {
119
        uint8_t tmp;
120
        PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
121 de6d9b64 Fabrice Bellard
    }
122
    *q = '\0';
123
}
124
125 c9a65ca8 Fabrice Bellard
static int asf_probe(AVProbeData *pd)
126
{
127
    /* check file header */
128 24c14d6d Michael Niedermayer
    if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
129 c9a65ca8 Fabrice Bellard
        return AVPROBE_SCORE_MAX;
130
    else
131
        return 0;
132
}
133
134 30e88789 Michael Niedermayer
static int get_value(ByteIOContext *pb, int type){
135
    switch(type){
136
        case 2: return get_le32(pb);
137
        case 3: return get_le32(pb);
138
        case 4: return get_le64(pb);
139
        case 5: return get_le16(pb);
140
        default:return INT_MIN;
141
    }
142
}
143
144 de6d9b64 Fabrice Bellard
static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
145
{
146 c9a65ca8 Fabrice Bellard
    ASFContext *asf = s->priv_data;
147 de6d9b64 Fabrice Bellard
    GUID g;
148 899681cd Björn Axelsson
    ByteIOContext *pb = s->pb;
149 de6d9b64 Fabrice Bellard
    AVStream *st;
150
    ASFStream *asf_st;
151 e095026a Fabrice Bellard
    int size, i;
152 0c1a9eda Zdenek Kabelac
    int64_t gsize;
153 30e88789 Michael Niedermayer
    AVRational dar[128];
154 d8470737 Zuxy Meng
    uint32_t bitrate[128];
155 30e88789 Michael Niedermayer
156
    memset(dar, 0, sizeof(dar));
157 d8470737 Zuxy Meng
    memset(bitrate, 0, sizeof(bitrate));
158 de6d9b64 Fabrice Bellard
159
    get_guid(pb, &g);
160
    if (memcmp(&g, &asf_header, sizeof(GUID)))
161 ccafd472 Baptiste Coudurier
        return -1;
162 de6d9b64 Fabrice Bellard
    get_le64(pb);
163
    get_le32(pb);
164
    get_byte(pb);
165
    get_byte(pb);
166 2141dc37 Zdenek Kabelac
    memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
167 de6d9b64 Fabrice Bellard
    for(;;) {
168
        get_guid(pb, &g);
169
        gsize = get_le64(pb);
170 f94981ea Måns Rullgård
        dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24);
171 de6d9b64 Fabrice Bellard
        print_guid(&g);
172 f94981ea Måns Rullgård
        dprintf(s, "  size=0x%"PRIx64"\n", gsize);
173 09d9672a Michael Niedermayer
        if (!memcmp(&g, &data_header, sizeof(GUID))) {
174
            asf->data_object_offset = url_ftell(pb);
175
            // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
176
            if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
177
                asf->data_object_size = gsize - 24;
178
            } else {
179
                asf->data_object_size = (uint64_t)-1;
180
            }
181
            break;
182
        }
183 de6d9b64 Fabrice Bellard
        if (gsize < 24)
184 ccafd472 Baptiste Coudurier
            return -1;
185 de6d9b64 Fabrice Bellard
        if (!memcmp(&g, &file_header, sizeof(GUID))) {
186 2a10020b Zdenek Kabelac
            get_guid(pb, &asf->hdr.guid);
187 bb270c08 Diego Biurrun
            asf->hdr.file_size          = get_le64(pb);
188
            asf->hdr.create_time        = get_le64(pb);
189 6bb2a2df Michael Niedermayer
            asf->nb_packets             = get_le64(pb);
190 bb270c08 Diego Biurrun
            asf->hdr.play_time          = get_le64(pb);
191 b4bbcd63 Rafaël Carré
            asf->hdr.send_time          = get_le64(pb);
192 bb270c08 Diego Biurrun
            asf->hdr.preroll            = get_le32(pb);
193
            asf->hdr.ignore             = get_le32(pb);
194
            asf->hdr.flags              = get_le32(pb);
195
            asf->hdr.min_pktsize        = get_le32(pb);
196
            asf->hdr.max_pktsize        = get_le32(pb);
197
            asf->hdr.max_bitrate        = get_le32(pb);
198
            asf->packet_size = asf->hdr.max_pktsize;
199 de6d9b64 Fabrice Bellard
        } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
200 fb65d2ca Diego Pettenò
            enum CodecType type;
201
            int type_specific_size, sizeX;
202 7ad5455c Michael Niedermayer
            uint64_t total_size;
203 de6d9b64 Fabrice Bellard
            unsigned int tag1;
204 371bf806 Michael Niedermayer
            int64_t pos1, pos2, start_time;
205 6fea687e John Donaghy
            int test_for_ext_stream_audio, is_dvr_ms_audio=0;
206 2a10020b Zdenek Kabelac
207 de6d9b64 Fabrice Bellard
            pos1 = url_ftell(pb);
208
209 247eadca Fabrice Bellard
            st = av_new_stream(s, 0);
210 de6d9b64 Fabrice Bellard
            if (!st)
211 ccafd472 Baptiste Coudurier
                return AVERROR(ENOMEM);
212 9ee91c2f Michael Niedermayer
            av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
213 de6d9b64 Fabrice Bellard
            asf_st = av_mallocz(sizeof(ASFStream));
214
            if (!asf_st)
215 ccafd472 Baptiste Coudurier
                return AVERROR(ENOMEM);
216 de6d9b64 Fabrice Bellard
            st->priv_data = asf_st;
217 371bf806 Michael Niedermayer
            start_time = asf->hdr.preroll;
218
219 73fe1052 Ryan Martell
            if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
220
                st->duration = asf->hdr.send_time /
221 371bf806 Michael Niedermayer
                    (10000000 / 1000) - start_time;
222 73fe1052 Ryan Martell
            }
223 de6d9b64 Fabrice Bellard
            get_guid(pb, &g);
224 88141c91 Michael Niedermayer
225
            test_for_ext_stream_audio = 0;
226 de6d9b64 Fabrice Bellard
            if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
227
                type = CODEC_TYPE_AUDIO;
228
            } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
229
                type = CODEC_TYPE_VIDEO;
230 ae38261e Mike Brown
            } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
231 3e86dba2 Michael Niedermayer
                type = CODEC_TYPE_DATA;
232 88141c91 Michael Niedermayer
            } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
233
                test_for_ext_stream_audio = 1;
234
                type = CODEC_TYPE_UNKNOWN;
235 de6d9b64 Fabrice Bellard
            } else {
236 ccafd472 Baptiste Coudurier
                return -1;
237 de6d9b64 Fabrice Bellard
            }
238
            get_guid(pb, &g);
239
            total_size = get_le64(pb);
240 2e7973bb Roman Shaposhnik
            type_specific_size = get_le32(pb);
241 de6d9b64 Fabrice Bellard
            get_le32(pb);
242 bb270c08 Diego Biurrun
            st->id = get_le16(pb) & 0x7f; /* stream id */
243 2a10020b Zdenek Kabelac
            // mapping of asf ID to AV stream ID;
244 247eadca Fabrice Bellard
            asf->asfid2avid[st->id] = s->nb_streams - 1;
245 2a10020b Zdenek Kabelac
246 de6d9b64 Fabrice Bellard
            get_le32(pb);
247 88141c91 Michael Niedermayer
248
            if (test_for_ext_stream_audio) {
249
                get_guid(pb, &g);
250
                if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
251
                    type = CODEC_TYPE_AUDIO;
252 6fea687e John Donaghy
                    is_dvr_ms_audio=1;
253 88141c91 Michael Niedermayer
                    get_guid(pb, &g);
254
                    get_le32(pb);
255
                    get_le32(pb);
256
                    get_le32(pb);
257
                    get_guid(pb, &g);
258
                    get_le32(pb);
259
                }
260
            }
261
262 bb270c08 Diego Biurrun
            st->codec->codec_type = type;
263 de6d9b64 Fabrice Bellard
            if (type == CODEC_TYPE_AUDIO) {
264 01f4895c Michael Niedermayer
                get_wav_header(pb, st->codec, type_specific_size);
265 6fea687e John Donaghy
                if (is_dvr_ms_audio) {
266
                    // codec_id and codec_tag are unreliable in dvr_ms
267
                    // files. Set them later by probing stream.
268 0bef08e5 Michael Niedermayer
                    st->codec->codec_id = CODEC_ID_PROBE;
269 6fea687e John Donaghy
                    st->codec->codec_tag = 0;
270
                }
271 57004ff1 Aurelien Jacobs
                st->need_parsing = AVSTREAM_PARSE_FULL;
272 bb270c08 Diego Biurrun
                /* We have to init the frame size at some point .... */
273
                pos2 = url_ftell(pb);
274 b9c6d01b Michael Niedermayer
                if (gsize >= (pos2 + 8 - pos1 + 24)) {
275 bb270c08 Diego Biurrun
                    asf_st->ds_span = get_byte(pb);
276
                    asf_st->ds_packet_size = get_le16(pb);
277
                    asf_st->ds_chunk_size = get_le16(pb);
278 6bb2a2df Michael Niedermayer
                    get_le16(pb); //ds_data_size
279
                    get_byte(pb); //ds_silence_data
280 bb270c08 Diego Biurrun
                }
281
                //printf("Descrambling: ps:%d cs:%d ds:%d s:%d  sd:%d\n",
282
                //       asf_st->ds_packet_size, asf_st->ds_chunk_size,
283
                //       asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
284
                if (asf_st->ds_span > 1) {
285
                    if (!asf_st->ds_chunk_size
286 05219463 Michael Niedermayer
                        || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
287
                        || asf_st->ds_packet_size % asf_st->ds_chunk_size)
288 bb270c08 Diego Biurrun
                        asf_st->ds_span = 0; // disable descrambling
289
                }
290 01f4895c Michael Niedermayer
                switch (st->codec->codec_id) {
291 80783dc2 Fabrice Bellard
                case CODEC_ID_MP3:
292 01f4895c Michael Niedermayer
                    st->codec->frame_size = MPA_FRAME_SIZE;
293 f80c1ac0 Philip Gladstone
                    break;
294
                case CODEC_ID_PCM_S16LE:
295
                case CODEC_ID_PCM_S16BE:
296
                case CODEC_ID_PCM_U16LE:
297
                case CODEC_ID_PCM_U16BE:
298
                case CODEC_ID_PCM_S8:
299
                case CODEC_ID_PCM_U8:
300
                case CODEC_ID_PCM_ALAW:
301
                case CODEC_ID_PCM_MULAW:
302 01f4895c Michael Niedermayer
                    st->codec->frame_size = 1;
303 f80c1ac0 Philip Gladstone
                    break;
304
                default:
305
                    /* This is probably wrong, but it prevents a crash later */
306 01f4895c Michael Niedermayer
                    st->codec->frame_size = 1;
307 f80c1ac0 Philip Gladstone
                    break;
308
                }
309 88141c91 Michael Niedermayer
            } else if (type == CODEC_TYPE_VIDEO) {
310 bb270c08 Diego Biurrun
                get_le32(pb);
311 de6d9b64 Fabrice Bellard
                get_le32(pb);
312
                get_byte(pb);
313
                size = get_le16(pb); /* size */
314 0ffd77b9 Michael Niedermayer
                sizeX= get_le32(pb); /* size */
315 01f4895c Michael Niedermayer
                st->codec->width = get_le32(pb);
316 bb270c08 Diego Biurrun
                st->codec->height = get_le32(pb);
317 2a10020b Zdenek Kabelac
                /* not available for asf */
318 de6d9b64 Fabrice Bellard
                get_le16(pb); /* panes */
319 dd1c8f3e Luca Abeni
                st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
320 de6d9b64 Fabrice Bellard
                tag1 = get_le32(pb);
321 bb270c08 Diego Biurrun
                url_fskip(pb, 20);
322 0ffd77b9 Michael Niedermayer
//                av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
323
                size= sizeX;
324 bb270c08 Diego Biurrun
                if (size > 40) {
325
                    st->codec->extradata_size = size - 40;
326
                    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
327
                    get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
328
                }
329 5e29abf8 Roberto Togni
330
        /* Extract palette from extradata if bpp <= 8 */
331
        /* This code assumes that extradata contains only palette */
332
        /* This is true for all paletted codecs implemented in ffmpeg */
333 dd1c8f3e Luca Abeni
        if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
334 01f4895c Michael Niedermayer
            st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
335 5e29abf8 Roberto Togni
#ifdef WORDS_BIGENDIAN
336 01f4895c Michael Niedermayer
            for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
337
                st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
338 5e29abf8 Roberto Togni
#else
339 01f4895c Michael Niedermayer
            memcpy(st->codec->palctrl->palette, st->codec->extradata,
340
                   FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
341 5e29abf8 Roberto Togni
#endif
342 01f4895c Michael Niedermayer
            st->codec->palctrl->palette_changed = 1;
343 5e29abf8 Roberto Togni
        }
344
345 01f4895c Michael Niedermayer
                st->codec->codec_tag = tag1;
346 bb270c08 Diego Biurrun
                st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
347 afbb5ce4 Michael Niedermayer
                if(tag1 == MKTAG('D', 'V', 'R', ' '))
348 57004ff1 Aurelien Jacobs
                    st->need_parsing = AVSTREAM_PARSE_FULL;
349 de6d9b64 Fabrice Bellard
            }
350
            pos2 = url_ftell(pb);
351
            url_fskip(pb, gsize - (pos2 - pos1 + 24));
352
        } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
353
            int len1, len2, len3, len4, len5;
354
355
            len1 = get_le16(pb);
356
            len2 = get_le16(pb);
357
            len3 = get_le16(pb);
358
            len4 = get_le16(pb);
359
            len5 = get_le16(pb);
360 4e15cc8b Michael Niedermayer
            get_str16_nolen(pb, len1, s->title    , sizeof(s->title));
361
            get_str16_nolen(pb, len2, s->author   , sizeof(s->author));
362 de6d9b64 Fabrice Bellard
            get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
363 4e15cc8b Michael Niedermayer
            get_str16_nolen(pb, len4, s->comment  , sizeof(s->comment));
364 bb270c08 Diego Biurrun
            url_fskip(pb, len5);
365 0e3b6a6f Ryan Martell
        } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) {
366
            int stream_count = get_le16(pb);
367
            int j;
368
369
//            av_log(NULL, AV_LOG_ERROR, "stream bitrate properties\n");
370
//            av_log(NULL, AV_LOG_ERROR, "streams %d\n", streams);
371
            for(j = 0; j < stream_count; j++) {
372
                int flags, bitrate, stream_id;
373
374
                flags= get_le16(pb);
375
                bitrate= get_le32(pb);
376
                stream_id= (flags & 0x7f);
377
//                av_log(NULL, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
378 a9054d91 Björn Axelsson
                asf->stream_bitrates[stream_id]= bitrate;
379 0e3b6a6f Ryan Martell
            }
380 d13431cd Kevin Kuphal
       } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
381
                int desc_count, i;
382
383
                desc_count = get_le16(pb);
384
                for(i=0;i<desc_count;i++)
385
                {
386 052aa2ad Steve L'Homme
                        int name_len,value_type,value_len;
387
                        uint64_t value_num = 0;
388 d045b8c1 Michael Niedermayer
                        char name[1024];
389 d13431cd Kevin Kuphal
390
                        name_len = get_le16(pb);
391 d045b8c1 Michael Niedermayer
                        get_str16_nolen(pb, name_len, name, sizeof(name));
392 d13431cd Kevin Kuphal
                        value_type = get_le16(pb);
393
                        value_len = get_le16(pb);
394 16428e63 Michael Niedermayer
                        if (value_type <= 1) // unicode or byte
395 d13431cd Kevin Kuphal
                        {
396 5e2a4855 Michael Niedermayer
                                if     (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
397
                                else if(!strcmp(name,"WM/Genre"     )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
398 0d4e281c Patrice Bensoussan
                                else if(!strcmp(name,"WM/Year"      )) {
399
                                    char year[8];
400
                                    get_str16_nolen(pb, value_len, year, sizeof(year));
401
                                    s->year = atoi(year);
402
                                }
403 6ec14b33 Patrice Bensoussan
                                else if(!strcmp(name,"WM/Track") && s->track == 0) {
404 629272d8 Patrice Bensoussan
                                    char track[8];
405
                                    get_str16_nolen(pb, value_len, track, sizeof(track));
406
                                    s->track = strtol(track, NULL, 10) + 1;
407
                                }
408
                                else if(!strcmp(name,"WM/TrackNumber")) {
409
                                    char track[8];
410
                                    get_str16_nolen(pb, value_len, track, sizeof(track));
411
                                    s->track = strtol(track, NULL, 10);
412
                                }
413 5e2a4855 Michael Niedermayer
                                else url_fskip(pb, value_len);
414 d13431cd Kevin Kuphal
                        }
415 16428e63 Michael Niedermayer
                        else if (value_type <= 5) // boolean or DWORD or QWORD or WORD
416 d13431cd Kevin Kuphal
                        {
417 30e88789 Michael Niedermayer
                                value_num= get_value(pb, value_type);
418 6ec14b33 Patrice Bensoussan
                                if (!strcmp(name,"WM/Track"      ) && s->track == 0) s->track = value_num + 1;
419 4e15cc8b Michael Niedermayer
                                if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
420 11c55efa Michael Niedermayer
                        }else
421
                            url_fskip(pb, value_len);
422 d13431cd Kevin Kuphal
                }
423 30e88789 Michael Niedermayer
        } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
424
            int n, stream_num, name_len, value_len, value_type, value_num;
425
            n = get_le16(pb);
426
427
            for(i=0;i<n;i++) {
428
                char name[1024];
429
430
                get_le16(pb); //lang_list_index
431
                stream_num= get_le16(pb);
432
                name_len=   get_le16(pb);
433
                value_type= get_le16(pb);
434
                value_len=  get_le32(pb);
435
436
                get_str16_nolen(pb, name_len, name, sizeof(name));
437
//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
438 755bfeab Diego Biurrun
                value_num= get_le16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
439 30e88789 Michael Niedermayer
                url_fskip(pb, value_len - 2);
440
441
                if(stream_num<128){
442
                    if     (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
443
                    else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
444
                }
445
            }
446 88141c91 Michael Niedermayer
        } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
447
            int ext_len, payload_ext_ct, stream_ct;
448 d8470737 Zuxy Meng
            uint32_t ext_d, leak_rate, stream_num;
449 1bd86246 Måns Rullgård
            int64_t pos_ex_st;
450 88141c91 Michael Niedermayer
            pos_ex_st = url_ftell(pb);
451
452 de3ae959 Michael Niedermayer
            get_le64(pb); // starttime
453
            get_le64(pb); // endtime
454 d8470737 Zuxy Meng
            leak_rate = get_le32(pb); // leak-datarate
455 de3ae959 Michael Niedermayer
            get_le32(pb); // bucket-datasize
456
            get_le32(pb); // init-bucket-fullness
457
            get_le32(pb); // alt-leak-datarate
458
            get_le32(pb); // alt-bucket-datasize
459
            get_le32(pb); // alt-init-bucket-fullness
460
            get_le32(pb); // max-object-size
461
            get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
462 d8470737 Zuxy Meng
            stream_num = get_le16(pb); // stream-num
463 de3ae959 Michael Niedermayer
            get_le16(pb); // stream-language-id-index
464
            get_le64(pb); // avg frametime in 100ns units
465
            stream_ct = get_le16(pb); //stream-name-count
466
            payload_ext_ct = get_le16(pb); //payload-extension-system-count
467 88141c91 Michael Niedermayer
468 d8470737 Zuxy Meng
            if (stream_num < 128)
469
                bitrate[stream_num] = leak_rate;
470
471 88141c91 Michael Niedermayer
            for (i=0; i<stream_ct; i++){
472
                get_le16(pb);
473
                ext_len = get_le16(pb);
474
                url_fseek(pb, ext_len, SEEK_CUR);
475
            }
476
477
            for (i=0; i<payload_ext_ct; i++){
478
                get_guid(pb, &g);
479
                ext_d=get_le16(pb);
480
                ext_len=get_le32(pb);
481
                url_fseek(pb, ext_len, SEEK_CUR);
482
            }
483
484
            // there could be a optional stream properties object to follow
485
            // if so the next iteration will pick it up
486 de6d9b64 Fabrice Bellard
        } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
487
            int v1, v2;
488
            get_guid(pb, &g);
489
            v1 = get_le32(pb);
490
            v2 = get_le16(pb);
491 88141c91 Michael Niedermayer
#if 0
492 de6d9b64 Fabrice Bellard
        } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
493
            int len, v1, n, num;
494
            char str[256], *q;
495
            char tag[16];
496

497
            get_guid(pb, &g);
498
            print_guid(&g);
499 2a10020b Zdenek Kabelac

500 de6d9b64 Fabrice Bellard
            n = get_le32(pb);
501
            for(i=0;i<n;i++) {
502
                num = get_le16(pb); /* stream number */
503
                get_str16(pb, str, sizeof(str));
504
                get_str16(pb, str, sizeof(str));
505
                len = get_le16(pb);
506
                q = tag;
507
                while (len > 0) {
508
                    v1 = get_byte(pb);
509
                    if ((q - tag) < sizeof(tag) - 1)
510
                        *q++ = v1;
511
                    len--;
512
                }
513
                *q = '\0';
514
            }
515
#endif
516
        } else if (url_feof(pb)) {
517 ccafd472 Baptiste Coudurier
            return -1;
518 de6d9b64 Fabrice Bellard
        } else {
519
            url_fseek(pb, gsize - 24, SEEK_CUR);
520
        }
521
    }
522
    get_guid(pb, &g);
523
    get_le64(pb);
524
    get_byte(pb);
525
    get_byte(pb);
526 2141dc37 Zdenek Kabelac
    if (url_feof(pb))
527 ccafd472 Baptiste Coudurier
        return -1;
528 2141dc37 Zdenek Kabelac
    asf->data_offset = url_ftell(pb);
529 de6d9b64 Fabrice Bellard
    asf->packet_size_left = 0;
530
531 30e88789 Michael Niedermayer
532
    for(i=0; i<128; i++){
533
        int stream_num= asf->asfid2avid[i];
534 d8470737 Zuxy Meng
        if(stream_num>=0){
535 59729451 Aurelien Jacobs
            AVStream *st = s->streams[stream_num];
536
            if (!st->codec->bit_rate)
537
                st->codec->bit_rate = bitrate[i];
538 d8470737 Zuxy Meng
            if (dar[i].num > 0 && dar[i].den > 0)
539 59729451 Aurelien Jacobs
                av_reduce(&st->sample_aspect_ratio.num,
540
                          &st->sample_aspect_ratio.den,
541 18d915dd Zuxy Meng
                          dar[i].num, dar[i].den, INT_MAX);
542 59729451 Aurelien Jacobs
//av_log(NULL, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
543 30e88789 Michael Niedermayer
        }
544
    }
545
546 de6d9b64 Fabrice Bellard
    return 0;
547
}
548
549 2a10020b Zdenek Kabelac
#define DO_2BITS(bits, var, defval) \
550
    switch (bits & 3) \
551
    { \
552
    case 3: var = get_le32(pb); rsize += 4; break; \
553
    case 2: var = get_le16(pb); rsize += 2; break; \
554
    case 1: var = get_byte(pb); rsize++; break; \
555
    default: var = defval; break; \
556
    }
557
558 1d217cdb Ronald S. Bultje
int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
559 de6d9b64 Fabrice Bellard
{
560
    ASFContext *asf = s->priv_data;
561 2a10020b Zdenek Kabelac
    uint32_t packet_length, padsize;
562 0c0d17f3 Michael Niedermayer
    int rsize = 8;
563 0fd9e6f3 Michael Niedermayer
    int c, d, e, off;
564
565 022f0b7c Ronald S. Bultje
    off= (url_ftell(pb) - s->data_offset) % asf->packet_size + 3;
566 0fd9e6f3 Michael Niedermayer
567
    c=d=e=-1;
568
    while(off-- > 0){
569
        c=d; d=e;
570
        e= get_byte(pb);
571
        if(c == 0x82 && !d && !e)
572
            break;
573
    }
574 115329f1 Diego Biurrun
575 1359c2d4 Zdenek Kabelac
    if (c != 0x82) {
576 5acdd6e6 Zdenek Kabelac
        if (!url_feof(pb))
577 bb270c08 Diego Biurrun
            av_log(s, AV_LOG_ERROR, "ff asf bad header %x  at:%"PRId64"\n", c, url_ftell(pb));
578 2a10020b Zdenek Kabelac
    }
579 0c0d17f3 Michael Niedermayer
    if ((c & 0x8f) == 0x82) {
580 0fd9e6f3 Michael Niedermayer
        if (d || e) {
581 5acdd6e6 Zdenek Kabelac
            if (!url_feof(pb))
582 bb270c08 Diego Biurrun
                av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
583 f7835507 Michael Niedermayer
            return -1;
584 bb270c08 Diego Biurrun
        }
585 0c0d17f3 Michael Niedermayer
        c= get_byte(pb);
586 0fd9e6f3 Michael Niedermayer
        d= get_byte(pb);
587 0c0d17f3 Michael Niedermayer
        rsize+=3;
588
    }else{
589
        url_fseek(pb, -1, SEEK_CUR); //FIXME
590 de6d9b64 Fabrice Bellard
    }
591 2a10020b Zdenek Kabelac
592 0c0d17f3 Michael Niedermayer
    asf->packet_flags    = c;
593
    asf->packet_property = d;
594 2a10020b Zdenek Kabelac
595
    DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
596
    DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
597
    DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
598
599 5b11e081 Michael Niedermayer
    //the following checks prevent overflows and infinite loops
600
    if(packet_length >= (1U<<29)){
601
        av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
602 ceba96cb Michael Niedermayer
        return -1;
603 5b11e081 Michael Niedermayer
    }
604 92216453 Michael Niedermayer
    if(padsize >= packet_length){
605 5b11e081 Michael Niedermayer
        av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
606 ceba96cb Michael Niedermayer
        return -1;
607 5b11e081 Michael Niedermayer
    }
608
609 2a10020b Zdenek Kabelac
    asf->packet_timestamp = get_le32(pb);
610 de6d9b64 Fabrice Bellard
    get_le16(pb); /* duration */
611 2141dc37 Zdenek Kabelac
    // rsize has at least 11 bytes which have to be present
612 2a10020b Zdenek Kabelac
613
    if (asf->packet_flags & 0x01) {
614 bb270c08 Diego Biurrun
        asf->packet_segsizetype = get_byte(pb); rsize++;
615 2a10020b Zdenek Kabelac
        asf->packet_segments = asf->packet_segsizetype & 0x3f;
616
    } else {
617 bb270c08 Diego Biurrun
        asf->packet_segments = 1;
618 2a10020b Zdenek Kabelac
        asf->packet_segsizetype = 0x80;
619
    }
620
    asf->packet_size_left = packet_length - padsize - rsize;
621 acbe6cfa Zdenek Kabelac
    if (packet_length < asf->hdr.min_pktsize)
622
        padsize += asf->hdr.min_pktsize - packet_length;
623 2a10020b Zdenek Kabelac
    asf->packet_padsize = padsize;
624 f94981ea Måns Rullgård
    dprintf(s, "packet: size=%d padsize=%d  left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
625 de6d9b64 Fabrice Bellard
    return 0;
626
}
627
628 ae60a857 Michael Niedermayer
/**
629
 *
630
 * @return <0 if error
631
 */
632 d7fb5a18 Ronald S. Bultje
static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
633 ae60a857 Michael Niedermayer
    ASFContext *asf = s->priv_data;
634
    int rsize = 1;
635
    int num = get_byte(pb);
636 559a55ad Michael Niedermayer
    int64_t ts0, ts1;
637 ae60a857 Michael Niedermayer
638
    asf->packet_segments--;
639
    asf->packet_key_frame = num >> 7;
640
    asf->stream_index = asf->asfid2avid[num & 0x7f];
641
    // sequence should be ignored!
642
    DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
643
    DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
644
    DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
645
//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
646
    if (asf->packet_replic_size >= 8) {
647
        asf->packet_obj_size = get_le32(pb);
648
        if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
649
            av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
650
            return -1;
651
        }
652
        asf->packet_frag_timestamp = get_le32(pb); // timestamp
653 559a55ad Michael Niedermayer
        if(asf->packet_replic_size >= 8+38+4){
654
//            for(i=0; i<asf->packet_replic_size-8; i++)
655
//                av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
656
//            av_log(s, AV_LOG_DEBUG, "\n");
657
            url_fskip(pb, 10);
658
            ts0= get_le64(pb);
659
            ts1= get_le64(pb);
660
            url_fskip(pb, 12);
661
            get_le32(pb);
662
            url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
663
            if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
664
            else         asf->packet_frag_timestamp= AV_NOPTS_VALUE;
665
        }else
666
            url_fskip(pb, asf->packet_replic_size - 8);
667 ae60a857 Michael Niedermayer
        rsize += asf->packet_replic_size; // FIXME - check validity
668
    } else if (asf->packet_replic_size==1){
669 efc90ebf Reimar Döffinger
        // multipacket - frag_offset is beginning timestamp
670 ae60a857 Michael Niedermayer
        asf->packet_time_start = asf->packet_frag_offset;
671
        asf->packet_frag_offset = 0;
672
        asf->packet_frag_timestamp = asf->packet_timestamp;
673
674
        asf->packet_time_delta = get_byte(pb);
675
        rsize++;
676
    }else if(asf->packet_replic_size!=0){
677
        av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
678
        return -1;
679
    }
680
    if (asf->packet_flags & 0x01) {
681
        DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
682 13f7e4b9 Michael Niedermayer
        if(asf->packet_frag_size > asf->packet_size_left - rsize){
683
            av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
684
            return -1;
685
        }
686 ae60a857 Michael Niedermayer
        //printf("Fragsize %d\n", asf->packet_frag_size);
687
    } else {
688
        asf->packet_frag_size = asf->packet_size_left - rsize;
689
        //printf("Using rest  %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
690
    }
691
    if (asf->packet_replic_size == 1) {
692
        asf->packet_multi_size = asf->packet_frag_size;
693
        if (asf->packet_multi_size > asf->packet_size_left)
694
            return -1;
695
    }
696
    asf->packet_size_left -= rsize;
697
    //printf("___objsize____  %d   %d    rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
698
699
    return 0;
700
}
701
702 1d217cdb Ronald S. Bultje
int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
703 de6d9b64 Fabrice Bellard
{
704
    ASFContext *asf = s->priv_data;
705 2a10020b Zdenek Kabelac
    ASFStream *asf_st = 0;
706
    for (;;) {
707 ceba96cb Michael Niedermayer
        if(url_feof(pb))
708 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
709 bb270c08 Diego Biurrun
        if (asf->packet_size_left < FRAME_HEADER_SIZE
710
            || asf->packet_segments < 1) {
711
            //asf->packet_size_left <= asf->packet_padsize) {
712
            int ret = asf->packet_size_left + asf->packet_padsize;
713 949b1a13 Steve L'Homme
            //printf("PacketLeftSize:%d  Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
714 5b11e081 Michael Niedermayer
            assert(ret>=0);
715 bb270c08 Diego Biurrun
            /* fail safe */
716
            url_fskip(pb, ret);
717 b04d5d31 Michael Niedermayer
718 022f0b7c Ronald S. Bultje
            asf->packet_pos= url_ftell(pb);
719 b6eaae39 Kohn Emil Dan
            if (asf->data_object_size != (uint64_t)-1 &&
720
                (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
721 6f3e0b21 Panagiotis Issaris
                return AVERROR(EIO); /* Do not exceed the size of the data object */
722 f27544fd Ronald S. Bultje
            return 1;
723 bb270c08 Diego Biurrun
        }
724
        if (asf->packet_time_start == 0) {
725 b0d75d60 Ronald S. Bultje
            if(asf_read_frame_header(s, pb) < 0){
726 ae60a857 Michael Niedermayer
                asf->packet_segments= 0;
727 236116cb Michael Niedermayer
                continue;
728 1305a9d5 Michael Niedermayer
            }
729 bb270c08 Diego Biurrun
            if (asf->stream_index < 0
730 f3356e9c Michael Niedermayer
                || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
731
                || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
732
                ) {
733 1359c2d4 Zdenek Kabelac
                asf->packet_time_start = 0;
734 bb270c08 Diego Biurrun
                /* unhandled packet (should not happen) */
735
                url_fskip(pb, asf->packet_frag_size);
736
                asf->packet_size_left -= asf->packet_frag_size;
737 b9866ebc Michael Niedermayer
                if(asf->stream_index < 0)
738 ae60a857 Michael Niedermayer
                    av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
739 1359c2d4 Zdenek Kabelac
                continue;
740 bb270c08 Diego Biurrun
            }
741
            asf->asf_st = s->streams[asf->stream_index]->priv_data;
742
        }
743
        asf_st = asf->asf_st;
744
745
        if (asf->packet_replic_size == 1) {
746 efc90ebf Reimar Döffinger
            // frag_offset is here used as the beginning timestamp
747 bb270c08 Diego Biurrun
            asf->packet_frag_timestamp = asf->packet_time_start;
748
            asf->packet_time_start += asf->packet_time_delta;
749
            asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
750
            asf->packet_size_left--;
751 2141dc37 Zdenek Kabelac
            asf->packet_multi_size--;
752 bb270c08 Diego Biurrun
            if (asf->packet_multi_size < asf->packet_obj_size)
753
            {
754
                asf->packet_time_start = 0;
755
                url_fskip(pb, asf->packet_multi_size);
756
                asf->packet_size_left -= asf->packet_multi_size;
757 2141dc37 Zdenek Kabelac
                continue;
758 bb270c08 Diego Biurrun
            }
759
            asf->packet_multi_size -= asf->packet_obj_size;
760
            //printf("COMPRESS size  %d  %d  %d   ms:%d\n", asf->packet_obj_size, asf->packet_frag_timestamp, asf->packet_size_left, asf->packet_multi_size);
761
        }
762 60ff1c44 Michael Niedermayer
        if(   /*asf->packet_frag_size == asf->packet_obj_size*/
763
              asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
764
           && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
765
            av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
766
                asf_st->frag_offset, asf->packet_frag_size,
767
                asf->packet_obj_size, asf_st->pkt.size);
768
            asf->packet_obj_size= asf_st->pkt.size;
769
        }
770
771 f8f0a0bd Michael Niedermayer
        if (   asf_st->pkt.size != asf->packet_obj_size
772
            || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
773 200026aa Michael Niedermayer
            if(asf_st->pkt.data){
774
                av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
775
                asf_st->frag_offset = 0;
776
                av_free_packet(&asf_st->pkt);
777
            }
778 bb270c08 Diego Biurrun
            /* new packet */
779
            av_new_packet(&asf_st->pkt, asf->packet_obj_size);
780
            asf_st->seq = asf->packet_seq;
781 eb63b051 Baptiste Coudurier
            asf_st->pkt.dts = asf->packet_frag_timestamp;
782 bb270c08 Diego Biurrun
            asf_st->pkt.stream_index = asf->stream_index;
783 115329f1 Diego Biurrun
            asf_st->pkt.pos =
784
            asf_st->packet_pos= asf->packet_pos;
785
//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
786 82b9e4a2 Michael Niedermayer
//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
787 01f4895c Michael Niedermayer
//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
788 bb270c08 Diego Biurrun
            if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
789
                asf->packet_key_frame = 1;
790
            if (asf->packet_key_frame)
791
                asf_st->pkt.flags |= PKT_FLAG_KEY;
792
        }
793
794
        /* read data */
795
        //printf("READ PACKET s:%d  os:%d  o:%d,%d  l:%d   DATA:%p\n",
796
        //       asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
797
        //       asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
798
        asf->packet_size_left -= asf->packet_frag_size;
799
        if (asf->packet_size_left < 0)
800 2141dc37 Zdenek Kabelac
            continue;
801 4c71d727 Michael Niedermayer
802
        if(   asf->packet_frag_offset >= asf_st->pkt.size
803
           || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
804
            av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
805
                asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
806
            continue;
807
        }
808
809 bb270c08 Diego Biurrun
        get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
810
                   asf->packet_frag_size);
811 72be7db4 Reimar Döffinger
        if (s->key && s->keylen == 20)
812
            ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
813
                            asf->packet_frag_size);
814 bb270c08 Diego Biurrun
        asf_st->frag_offset += asf->packet_frag_size;
815
        /* test if whole packet is read */
816
        if (asf_st->frag_offset == asf_st->pkt.size) {
817 da0b94f5 Michael Niedermayer
            //workaround for macroshit radio DVR-MS files
818
            if(   s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
819
               && asf_st->pkt.size > 100){
820
                int i;
821
                for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
822
                if(i == asf_st->pkt.size){
823
                    av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
824
                    asf_st->frag_offset = 0;
825
                    av_free_packet(&asf_st->pkt);
826
                    continue;
827
                }
828
            }
829
830 bb270c08 Diego Biurrun
            /* return packet */
831
            if (asf_st->ds_span > 1) {
832 05219463 Michael Niedermayer
              if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
833 b43387d4 Michael Niedermayer
                    av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span (%d %d %d)\n", asf_st->pkt.size, asf_st->ds_packet_size, asf_st->ds_span);
834 05219463 Michael Niedermayer
              }else{
835 bb270c08 Diego Biurrun
                /* packet descrambling */
836 191e8ca7 Måns Rullgård
                uint8_t *newdata = av_malloc(asf_st->pkt.size);
837 bb270c08 Diego Biurrun
                if (newdata) {
838
                    int offset = 0;
839
                    while (offset < asf_st->pkt.size) {
840
                        int off = offset / asf_st->ds_chunk_size;
841
                        int row = off / asf_st->ds_span;
842
                        int col = off % asf_st->ds_span;
843
                        int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
844
                        //printf("off:%d  row:%d  col:%d  idx:%d\n", off, row, col, idx);
845 05219463 Michael Niedermayer
846
                        assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
847
                        assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
848 bb270c08 Diego Biurrun
                        memcpy(newdata + offset,
849
                               asf_st->pkt.data + idx * asf_st->ds_chunk_size,
850
                               asf_st->ds_chunk_size);
851
                        offset += asf_st->ds_chunk_size;
852
                    }
853
                    av_free(asf_st->pkt.data);
854
                    asf_st->pkt.data = newdata;
855
                }
856 05219463 Michael Niedermayer
              }
857 bb270c08 Diego Biurrun
            }
858
            asf_st->frag_offset = 0;
859 b83e83b9 Michael Niedermayer
            *pkt= asf_st->pkt;
860 bb270c08 Diego Biurrun
            //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
861
            asf_st->pkt.size = 0;
862
            asf_st->pkt.data = 0;
863
            break; // packet completed
864
        }
865 de6d9b64 Fabrice Bellard
    }
866
    return 0;
867
}
868
869 f27544fd Ronald S. Bultje
static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
870
{
871
    ASFContext *asf = s->priv_data;
872
873
    for (;;) {
874
        int ret;
875
876
        /* parse cached packets, if any */
877 1d217cdb Ronald S. Bultje
        if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
878 f27544fd Ronald S. Bultje
            return ret;
879 1d217cdb Ronald S. Bultje
        if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
880 f27544fd Ronald S. Bultje
            assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
881
        asf->packet_time_start = 0;
882
    }
883
884
    return 0;
885
}
886
887 38376f00 Kevin Kuphal
// Added to support seeking after packets have been read
888
// If information is not reset, read_packet fails due to
889
// leftover information from previous reads
890
static void asf_reset_header(AVFormatContext *s)
891
{
892
    ASFContext *asf = s->priv_data;
893 82b9e4a2 Michael Niedermayer
    ASFStream *asf_st;
894
    int i;
895 38376f00 Kevin Kuphal
896
    asf->packet_nb_frames = 0;
897
    asf->packet_size_left = 0;
898
    asf->packet_segments = 0;
899
    asf->packet_flags = 0;
900
    asf->packet_property = 0;
901
    asf->packet_timestamp = 0;
902
    asf->packet_segsizetype = 0;
903
    asf->packet_segments = 0;
904
    asf->packet_seq = 0;
905
    asf->packet_replic_size = 0;
906
    asf->packet_key_frame = 0;
907
    asf->packet_padsize = 0;
908
    asf->packet_frag_offset = 0;
909
    asf->packet_frag_size = 0;
910
    asf->packet_frag_timestamp = 0;
911
    asf->packet_multi_size = 0;
912
    asf->packet_obj_size = 0;
913
    asf->packet_time_delta = 0;
914
    asf->packet_time_start = 0;
915 115329f1 Diego Biurrun
916 82b9e4a2 Michael Niedermayer
    for(i=0; i<s->nb_streams; i++){
917
        asf_st= s->streams[i]->priv_data;
918
        av_free_packet(&asf_st->pkt);
919
        asf_st->frag_offset=0;
920
        asf_st->seq=0;
921
    }
922
    asf->asf_st= NULL;
923 38376f00 Kevin Kuphal
}
924
925 5d25d2a9 Diego Biurrun
static int asf_read_close(AVFormatContext *s)
926
{
927
    int i;
928
929
    asf_reset_header(s);
930
    for(i=0;i<s->nb_streams;i++) {
931
        AVStream *st = s->streams[i];
932
        av_free(st->codec->palctrl);
933
    }
934
    return 0;
935
}
936
937 8d14a25c Michael Niedermayer
static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
938 38376f00 Kevin Kuphal
{
939
    ASFContext *asf = s->priv_data;
940
    AVPacket pkt1, *pkt = &pkt1;
941 82b9e4a2 Michael Niedermayer
    ASFStream *asf_st;
942 580fb5e7 Michael Niedermayer
    int64_t pts;
943 82b9e4a2 Michael Niedermayer
    int64_t pos= *ppos;
944 3e9245a9 Michael Niedermayer
    int i;
945
    int64_t start_pos[s->nb_streams];
946 115329f1 Diego Biurrun
947 3e9245a9 Michael Niedermayer
    for(i=0; i<s->nb_streams; i++){
948
        start_pos[i]= pos;
949
    }
950 115329f1 Diego Biurrun
951 8d14a25c Michael Niedermayer
    pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
952
    *ppos= pos;
953 899681cd Björn Axelsson
    url_fseek(s->pb, pos, SEEK_SET);
954 115329f1 Diego Biurrun
955 82b9e4a2 Michael Niedermayer
//printf("asf_read_pts\n");
956
    asf_reset_header(s);
957 3e9245a9 Michael Niedermayer
    for(;;){
958 82b9e4a2 Michael Niedermayer
        if (av_read_frame(s, pkt) < 0){
959 0b93103a Michael Niedermayer
            av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
960 bb270c08 Diego Biurrun
            return AV_NOPTS_VALUE;
961 82b9e4a2 Michael Niedermayer
        }
962 115329f1 Diego Biurrun
963 38cf2a72 Michael Niedermayer
        pts= pkt->pts;
964 580fb5e7 Michael Niedermayer
965
        av_free_packet(pkt);
966 3e9245a9 Michael Niedermayer
        if(pkt->flags&PKT_FLAG_KEY){
967
            i= pkt->stream_index;
968
969
            asf_st= s->streams[i]->priv_data;
970
971 0fd9e6f3 Michael Niedermayer
//            assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
972 8d14a25c Michael Niedermayer
            pos= asf_st->packet_pos;
973 09646bab Michael Niedermayer
974 52e54612 Michael Niedermayer
            av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
975 8d14a25c Michael Niedermayer
            start_pos[i]= asf_st->packet_pos + 1;
976 115329f1 Diego Biurrun
977 3e9245a9 Michael Niedermayer
            if(pkt->stream_index == stream_index)
978
               break;
979
        }
980
    }
981
982
    *ppos= pos;
983 949b1a13 Steve L'Homme
//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
984 580fb5e7 Michael Niedermayer
985
    return pts;
986 38376f00 Kevin Kuphal
}
987
988 56c96a22 Michael Niedermayer
static void asf_build_simple_index(AVFormatContext *s, int stream_index)
989
{
990
    GUID g;
991
    ASFContext *asf = s->priv_data;
992
    int64_t gsize, itime;
993
    int64_t pos, current_pos, index_pts;
994
    int i;
995
    int pct,ict;
996
997 899681cd Björn Axelsson
    current_pos = url_ftell(s->pb);
998 56c96a22 Michael Niedermayer
999 899681cd Björn Axelsson
    url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1000
    get_guid(s->pb, &g);
1001 56c96a22 Michael Niedermayer
    if (!memcmp(&g, &index_guid, sizeof(GUID))) {
1002 899681cd Björn Axelsson
        gsize = get_le64(s->pb);
1003
        get_guid(s->pb, &g);
1004
        itime=get_le64(s->pb);
1005
        pct=get_le32(s->pb);
1006
        ict=get_le32(s->pb);
1007 ccd3228e Dominik Mierzejewski
        av_log(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1008 56c96a22 Michael Niedermayer
1009
        for (i=0;i<ict;i++){
1010 899681cd Björn Axelsson
            int pktnum=get_le32(s->pb);
1011
            int pktct =get_le16(s->pb);
1012 56c96a22 Michael Niedermayer
            av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
1013
1014
            pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
1015
            index_pts=av_rescale(itime, i, 10000);
1016
1017
            av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
1018
        }
1019 52e54612 Michael Niedermayer
        asf->index_read= 1;
1020 56c96a22 Michael Niedermayer
    }
1021 899681cd Björn Axelsson
    url_fseek(s->pb, current_pos, SEEK_SET);
1022 56c96a22 Michael Niedermayer
}
1023
1024 3ba1438d Michael Niedermayer
static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1025 2a10020b Zdenek Kabelac
{
1026 afda223c Fabrice Bellard
    ASFContext *asf = s->priv_data;
1027 56c96a22 Michael Niedermayer
    AVStream *st = s->streams[stream_index];
1028
    int64_t pos;
1029
    int index;
1030 115329f1 Diego Biurrun
1031 a602556e Michael Niedermayer
    if (asf->packet_size <= 0)
1032 38376f00 Kevin Kuphal
        return -1;
1033
1034 fa13095a Björn Axelsson
    /* Try using the protocol's read_seek if available */
1035 fd2982a0 Aurelien Jacobs
    if(s->pb) {
1036 fa13095a Björn Axelsson
        int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1037
        if(ret >= 0)
1038
            asf_reset_header(s);
1039 fd2982a0 Aurelien Jacobs
        if (ret != AVERROR(ENOSYS))
1040 cd31f8dc Aurelien Jacobs
            return ret;
1041 fa13095a Björn Axelsson
    }
1042
1043 52e54612 Michael Niedermayer
    if (!asf->index_read)
1044 56c96a22 Michael Niedermayer
        asf_build_simple_index(s, stream_index);
1045
1046 52e54612 Michael Niedermayer
    if(!(asf->index_read && st->index_entries)){
1047 56c96a22 Michael Niedermayer
        if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1048
            return -1;
1049
    }else{
1050
        index= av_index_search_timestamp(st, pts, flags);
1051
        if(index<0)
1052
            return -1;
1053
1054
        /* find the position */
1055
        pos = st->index_entries[index].pos;
1056
        pts = st->index_entries[index].timestamp;
1057
1058
    // various attempts to find key frame have failed so far
1059
    //    asf_reset_header(s);
1060 899681cd Björn Axelsson
    //    url_fseek(s->pb, pos, SEEK_SET);
1061 56c96a22 Michael Niedermayer
    //    key_pos = pos;
1062
    //     for(i=0;i<16;i++){
1063 899681cd Björn Axelsson
    //         pos = url_ftell(s->pb);
1064 56c96a22 Michael Niedermayer
    //         if (av_read_frame(s, &pkt) < 0){
1065
    //             av_log(s, AV_LOG_INFO, "seek failed\n");
1066
    //             return -1;
1067
    //         }
1068
    //         asf_st = s->streams[stream_index]->priv_data;
1069
    //         pos += st->parser->frame_offset;
1070
    //
1071
    //         if (pkt.size > b) {
1072
    //             b = pkt.size;
1073
    //             key_pos = pos;
1074
    //         }
1075
    //
1076
    //         av_free_packet(&pkt);
1077
    //     }
1078
1079
        /* do the seek */
1080 ccd3228e Dominik Mierzejewski
        av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1081 899681cd Björn Axelsson
        url_fseek(s->pb, pos, SEEK_SET);
1082 56c96a22 Michael Niedermayer
    }
1083 38376f00 Kevin Kuphal
    asf_reset_header(s);
1084
    return 0;
1085 2a10020b Zdenek Kabelac
}
1086
1087 ff70e601 Måns Rullgård
AVInputFormat asf_demuxer = {
1088 c9a65ca8 Fabrice Bellard
    "asf",
1089 bde15e74 Stefano Sabatini
    NULL_IF_CONFIG_SMALL("ASF format"),
1090 c9a65ca8 Fabrice Bellard
    sizeof(ASFContext),
1091
    asf_probe,
1092
    asf_read_header,
1093
    asf_read_packet,
1094
    asf_read_close,
1095 2a10020b Zdenek Kabelac
    asf_read_seek,
1096 8d14a25c Michael Niedermayer
    asf_read_pts,
1097 c9a65ca8 Fabrice Bellard
};