summaryrefslogtreecommitdiff
path: root/libavformat/raw.c
blob: 969858346d046edc247e6cba69079d8776761723 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
/*
 * RAW muxer and demuxer
 * Copyright (c) 2001 Fabrice Bellard
 * Copyright (c) 2005 Alex Beregszaszi
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/crc.h"
#include "libavcodec/ac3_parser.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "raw.h"
#include "id3v2.h"
#include "id3v1.h"

/* simple formats */

#if CONFIG_NULL_MUXER
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
    return 0;
}
#endif

#if CONFIG_MUXERS
int ff_raw_write_packet(AVFormatContext *s, AVPacket *pkt)
{
    put_buffer(s->pb, pkt->data, pkt->size);
    put_flush_packet(s->pb);
    return 0;
}
#endif

#if CONFIG_DEMUXERS
/* raw input */
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
    AVStream *st;
    enum CodecID id;

    st = av_new_stream(s, 0);
    if (!st)
        return AVERROR(ENOMEM);

        id = s->iformat->value;
        if (id == CODEC_ID_RAWVIDEO) {
            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
        } else {
            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
        }
        st->codec->codec_id = id;

        switch(st->codec->codec_type) {
        case AVMEDIA_TYPE_AUDIO:
            st->codec->sample_rate = ap->sample_rate;
            if(ap->channels) st->codec->channels = ap->channels;
            else             st->codec->channels = 1;
            st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
            assert(st->codec->bits_per_coded_sample > 0);
            st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
            break;
        case AVMEDIA_TYPE_VIDEO:
            if(ap->time_base.num)
                av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
            else
                av_set_pts_info(st, 64, 1, 25);
            st->codec->width = ap->width;
            st->codec->height = ap->height;
            st->codec->pix_fmt = ap->pix_fmt;
            if(st->codec->pix_fmt == PIX_FMT_NONE)
                st->codec->pix_fmt= PIX_FMT_YUV420P;
            break;
        default:
            return -1;
        }
    return 0;
}

#define RAW_PACKET_SIZE 1024
#define RAW_SAMPLES     1024

static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
{
    int ret, size, bps;
    //    AVStream *st = s->streams[0];

    size= RAW_SAMPLES*s->streams[0]->codec->block_align;

    ret= av_get_packet(s->pb, pkt, size);

    pkt->stream_index = 0;
    if (ret < 0)
        return ret;

    bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
    assert(bps); // if false there IS a bug elsewhere (NOT in this function)
    pkt->dts=
    pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);

    return ret;
}

int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
{
    int ret, size;

    size = RAW_PACKET_SIZE;

    if (av_new_packet(pkt, size) < 0)
        return AVERROR(ENOMEM);

    pkt->pos= url_ftell(s->pb);
    pkt->stream_index = 0;
    ret = get_partial_buffer(s->pb, pkt->data, size);
    if (ret < 0) {
        av_free_packet(pkt);
        return ret;
    }
    pkt->size = ret;
    return ret;
}
#endif

#if CONFIG_RAWVIDEO_DEMUXER
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
{
    int packet_size, ret, width, height;
    AVStream *st = s->streams[0];

    width = st->codec->width;
    height = st->codec->height;

    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
    if (packet_size < 0)
        return -1;

    ret= av_get_packet(s->pb, pkt, packet_size);
    pkt->pts=
    pkt->dts= pkt->pos / packet_size;

    pkt->stream_index = 0;
    if (ret < 0)
        return ret;
    return 0;
}
#endif

#if CONFIG_INGENIENT_DEMUXER
// http://www.artificis.hu/files/texts/ingenient.txt
static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
{
    int ret, size, w, h, unk1, unk2;

    if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
        return AVERROR(EIO); // FIXME

    size = get_le32(s->pb);

    w = get_le16(s->pb);
    h = get_le16(s->pb);

    url_fskip(s->pb, 8); // zero + size (padded?)
    url_fskip(s->pb, 2);
    unk1 = get_le16(s->pb);
    unk2 = get_le16(s->pb);
    url_fskip(s->pb, 22); // ASCII timestamp

    av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
        size, w, h, unk1, unk2);

    if (av_new_packet(pkt, size) < 0)
        return AVERROR(ENOMEM);

    pkt->pos = url_ftell(s->pb);
    pkt->stream_index = 0;
    ret = get_buffer(s->pb, pkt->data, size);
    if (ret < 0) {
        av_free_packet(pkt);
        return ret;
    }
    pkt->size = ret;
    return ret;
}
#endif

#if CONFIG_DEMUXERS
int pcm_read_seek(AVFormatContext *s,
                  int stream_index, int64_t timestamp, int flags)
{
    AVStream *st;
    int block_align, byte_rate;
    int64_t pos, ret;

    st = s->streams[0];

    block_align = st->codec->block_align ? st->codec->block_align :
        (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
    byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
        block_align * st->codec->sample_rate;

    if (block_align <= 0 || byte_rate <= 0)
        return -1;
    if (timestamp < 0) timestamp = 0;

    /* compute the position by aligning it to block_align */
    pos = av_rescale_rnd(timestamp * byte_rate,
                         st->time_base.num,
                         st->time_base.den * (int64_t)block_align,
                         (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
    pos *= block_align;

    /* recompute exact position */
    st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
    if ((ret = url_fseek(s->pb, pos + s->data_offset, SEEK_SET)) < 0)
        return ret;
    return 0;
}

static int audio_read_header(AVFormatContext *s,
                             AVFormatParameters *ap)
{
    AVStream *st = av_new_stream(s, 0);
    if (!st)
        return AVERROR(ENOMEM);
    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
    st->codec->codec_id = s->iformat->value;
    st->need_parsing = AVSTREAM_PARSE_FULL;
    /* the parameters will be extracted from the compressed bitstream */

    return 0;
}

/* MPEG-1/H.263 input */
static int video_read_header(AVFormatContext *s,
                             AVFormatParameters *ap)
{
    AVStream *st;

    st = av_new_stream(s, 0);
    if (!st)
        return AVERROR(ENOMEM);

    st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
    st->codec->codec_id = s->iformat->value;
    st->need_parsing = AVSTREAM_PARSE_FULL;

    /* for MJPEG, specify frame rate */
    /* for MPEG-4 specify it, too (most MPEG-4 streams do not have the fixed_vop_rate set ...)*/
    if (ap->time_base.num) {
        st->codec->time_base= ap->time_base;
    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
                st->codec->codec_id == CODEC_ID_MPEG4 ||
                st->codec->codec_id == CODEC_ID_DIRAC ||
                st->codec->codec_id == CODEC_ID_DNXHD ||
                st->codec->codec_id == CODEC_ID_VC1   ||
                st->codec->codec_id == CODEC_ID_H264) {
        st->codec->time_base= (AVRational){1,25};
    }
    av_set_pts_info(st, 64, 1, 1200000);

    return 0;
}
#endif

#if CONFIG_MPEGVIDEO_DEMUXER
#define SEQ_START_CODE          0x000001b3
#define GOP_START_CODE          0x000001b8
#define PICTURE_START_CODE      0x00000100
#define SLICE_START_CODE        0x00000101
#define PACK_START_CODE         0x000001ba
#define VIDEO_ID                0x000001e0
#define AUDIO_ID                0x000001c0

static int mpegvideo_probe(AVProbeData *p)
{
    uint32_t code= -1;
    int pic=0, seq=0, slice=0, pspack=0, pes=0;
    int i;

    for(i=0; i<p->buf_size; i++){
        code = (code<<8) + p->buf[i];
        if ((code & 0xffffff00) == 0x100) {
            switch(code){
            case     SEQ_START_CODE:   seq++; break;
            case PICTURE_START_CODE:   pic++; break;
            case   SLICE_START_CODE: slice++; break;
            case    PACK_START_CODE: pspack++; break;
            }
            if     ((code & 0x1f0) == VIDEO_ID)   pes++;
            else if((code & 0x1e0) == AUDIO_ID)   pes++;
        }
    }
    if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
        return pic>1 ? AVPROBE_SCORE_MAX/2+1 : AVPROBE_SCORE_MAX/4; // +1 for .mpg
    return 0;
}
#endif

#if CONFIG_CAVSVIDEO_DEMUXER
#define CAVS_SEQ_START_CODE       0x000001b0
#define CAVS_PIC_I_START_CODE     0x000001b3
#define CAVS_UNDEF_START_CODE     0x000001b4
#define CAVS_PIC_PB_START_CODE    0x000001b6
#define CAVS_VIDEO_EDIT_CODE      0x000001b7
#define CAVS_PROFILE_JIZHUN       0x20

static int cavsvideo_probe(AVProbeData *p)
{
    uint32_t code= -1;
    int pic=0, seq=0, slice_pos = 0;
    int i;

    for(i=0; i<p->buf_size; i++){
        code = (code<<8) + p->buf[i];
        if ((code & 0xffffff00) == 0x100) {
            if(code < CAVS_SEQ_START_CODE) {
                /* slices have to be consecutive */
                if(code < slice_pos)
                    return 0;
                slice_pos = code;
            } else {
                slice_pos = 0;
            }
            if (code == CAVS_SEQ_START_CODE) {
                seq++;
                /* check for the only currently supported profile */
                if(p->buf[i+1] != CAVS_PROFILE_JIZHUN)
                    return 0;
            } else if ((code == CAVS_PIC_I_START_CODE) ||
                       (code == CAVS_PIC_PB_START_CODE)) {
                pic++;
            } else if ((code == CAVS_UNDEF_START_CODE) ||
                       (code >  CAVS_VIDEO_EDIT_CODE)) {
                return 0;
            }
        }
    }
    if(seq && seq*9<=pic*10)
        return AVPROBE_SCORE_MAX/2;
    return 0;
}
#endif

#if CONFIG_M4V_DEMUXER
#define VISUAL_OBJECT_START_CODE       0x000001b5
#define VOP_START_CODE                 0x000001b6

static int mpeg4video_probe(AVProbeData *probe_packet)
{
    uint32_t temp_buffer= -1;
    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
    int i;

    for(i=0; i<probe_packet->buf_size; i++){
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
        if ((temp_buffer & 0xffffff00) != 0x100)
            continue;

        if (temp_buffer == VOP_START_CODE)                         VOP++;
        else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;
        else if (temp_buffer < 0x120)                              VO++;
        else if (temp_buffer < 0x130)                              VOL++;
        else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)
                 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;
    }

    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
        return AVPROBE_SCORE_MAX/2;
    return 0;
}
#endif

#if CONFIG_H264_DEMUXER
static int h264_probe(AVProbeData *p)
{
    uint32_t code= -1;
    int sps=0, pps=0, idr=0, res=0, sli=0;
    int i;

    for(i=0; i<p->buf_size; i++){
        code = (code<<8) + p->buf[i];
        if ((code & 0xffffff00) == 0x100) {
            int ref_idc= (code>>5)&3;
            int type   = code & 0x1F;
            static const int8_t ref_zero[32]={
                2, 0, 0, 0, 0,-1, 1,-1,
               -1, 1, 1, 1, 1,-1, 2, 2,
                2, 2, 2, 0, 2, 2, 2, 2,
                2, 2, 2, 2, 2, 2, 2, 2
            };

            if(code & 0x80) //forbidden bit
                return 0;

            if(ref_zero[type] == 1 && ref_idc)
                return 0;
            if(ref_zero[type] ==-1 && !ref_idc)
                return 0;
            if(ref_zero[type] == 2)
                res++;

            switch(type){
            case     1:   sli++; break;
            case     5:   idr++; break;
            case     7:
                if(p->buf[i+2]&0x0F)
                    return 0;
                sps++;
                break;
            case     8:   pps++; break;
            }
        }
    }
    if(sps && pps && (idr||sli>3) && res<(sps+pps+idr))
        return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
    return 0;
}
#endif

#if CONFIG_H263_DEMUXER
static int h263_probe(AVProbeData *p)
{
    uint64_t code= -1;
    int i;
    int valid_psc=0;
    int invalid_psc=0;
    int res_change=0;
    int src_fmt, last_src_fmt=-1;
    int last_gn=0;

    for(i=0; i<p->buf_size; i++){
        code = (code<<8) + p->buf[i];
        if ((code & 0xfffffc0000) == 0x800000) {
            src_fmt= (code>>2)&3;
            if(   src_fmt != last_src_fmt
               && last_src_fmt>0 && last_src_fmt<6
               && src_fmt<6)
                res_change++;

            if((code&0x300)==0x200 && src_fmt){
                valid_psc++;
                last_gn=0;
            }else
                invalid_psc++;
            last_src_fmt= src_fmt;
        } else if((code & 0xffff800000) == 0x800000) {
            int gn= (code>>(23-5)) & 0x1F;
            if(gn<last_gn){
                invalid_psc++;
            }else
                last_gn= gn;
        }
    }
//av_log(NULL, AV_LOG_ERROR, "h263_probe: psc:%d invalid:%d res_change:%d\n", valid_psc, invalid_psc, res_change);
//h263_probe: psc:3 invalid:0 res_change:0 (1588/recent_ffmpeg_parses_mpg_incorrectly.mpg)
    if(valid_psc > 2*invalid_psc + 2*res_change + 3){
        return 50;
    }else if(valid_psc > 2*invalid_psc)
        return 25;
    return 0;
}
#endif

#if CONFIG_H261_DEMUXER
static int h261_probe(AVProbeData *p)
{
    uint32_t code= -1;
    int i;
    int valid_psc=0;
    int invalid_psc=0;
    int next_gn=0;
    int src_fmt=0;
    GetBitContext gb;

    init_get_bits(&gb, p->buf, p->buf_size*8);

    for(i=0; i<p->buf_size*8; i++){
        if ((code & 0x01ff0000) || !(code & 0xff00)) {
            code = (code<<8) + get_bits(&gb, 8);
            i += 7;
        } else
            code = (code<<1) + get_bits1(&gb);
        if ((code & 0xffff0000) == 0x10000) {
            int gn= (code>>12)&0xf;
            if(!gn)
                src_fmt= code&8;
            if(gn != next_gn) invalid_psc++;
            else              valid_psc++;

            if(src_fmt){ // CIF
                next_gn= (gn+1     )%13;
            }else{       //QCIF
                next_gn= (gn+1+!!gn)% 7;
            }
        }
    }
    if(valid_psc > 2*invalid_psc + 6){
        return 50;
    }else if(valid_psc > 2*invalid_psc + 2)
        return 25;
    return 0;
}
#endif

#if CONFIG_DTS_DEMUXER
#define DCA_MARKER_14B_BE 0x1FFFE800
#define DCA_MARKER_14B_LE 0xFF1F00E8
#define DCA_MARKER_RAW_BE 0x7FFE8001
#define DCA_MARKER_RAW_LE 0xFE7F0180
static int dts_probe(AVProbeData *p)
{
    const uint8_t *buf, *bufp;
    uint32_t state = -1;
    int markers[3] = {0};
    int sum, max;

    buf = p->buf;

    for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
        bufp = buf;
        state = (state << 16) | bytestream_get_be16(&bufp);

        /* regular bitstream */
        if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
            markers[0]++;

        /* 14 bits big-endian bitstream */
        if (state == DCA_MARKER_14B_BE)
            if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
                markers[1]++;

        /* 14 bits little-endian bitstream */
        if (state == DCA_MARKER_14B_LE)
            if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
                markers[2]++;
    }
    sum = markers[0] + markers[1] + markers[2];
    max = markers[1] > markers[0];
    max = markers[2] > markers[max] ? 2 : max;
    if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
        markers[max] * 4 > sum * 3)
        return AVPROBE_SCORE_MAX/2+1;

    return 0;
}
#endif

#if CONFIG_DIRAC_DEMUXER
static int dirac_probe(AVProbeData *p)
{
    if (AV_RL32(p->buf) == MKTAG('B', 'B', 'C', 'D'))
        return AVPROBE_SCORE_MAX;
    else
        return 0;
}
#endif

#if CONFIG_DNXHD_DEMUXER
static int dnxhd_probe(AVProbeData *p)
{
    static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01};
    int w, h, compression_id;
    if (p->buf_size < 0x2c)
        return 0;
    if (memcmp(p->buf, header, 5))
        return 0;
    h = AV_RB16(p->buf + 0x18);
    w = AV_RB16(p->buf + 0x1a);
    if (!w || !h)
        return 0;
    compression_id = AV_RB32(p->buf + 0x28);
    if (compression_id < 1237 || compression_id > 1253)
        return 0;
    return AVPROBE_SCORE_MAX;
}
#endif

#if CONFIG_AC3_DEMUXER || CONFIG_EAC3_DEMUXER
static int ac3_eac3_probe(AVProbeData *p, enum CodecID expected_codec_id)
{
    int max_frames, first_frames = 0, frames;
    uint8_t *buf, *buf2, *end;
    AC3HeaderInfo hdr;
    GetBitContext gbc;
    enum CodecID codec_id = CODEC_ID_AC3;

    max_frames = 0;
    buf = p->buf;
    end = buf + p->buf_size;

    for(; buf < end; buf++) {
        buf2 = buf;

        for(frames = 0; buf2 < end; frames++) {
            init_get_bits(&gbc, buf2, 54);
            if(ff_ac3_parse_header(&gbc, &hdr) < 0)
                break;
            if(buf2 + hdr.frame_size > end ||
               av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, buf2 + 2, hdr.frame_size - 2))
                break;
            if (hdr.bitstream_id > 10)
                codec_id = CODEC_ID_EAC3;
            buf2 += hdr.frame_size;
        }
        max_frames = FFMAX(max_frames, frames);
        if(buf == p->buf)
            first_frames = frames;
    }
    if(codec_id != expected_codec_id) return 0;
    // keep this in sync with mp3 probe, both need to avoid
    // issues with MPEG-files!
    if   (first_frames>=4) return AVPROBE_SCORE_MAX/2+1;
    else if(max_frames>500)return AVPROBE_SCORE_MAX/2;
    else if(max_frames>=4) return AVPROBE_SCORE_MAX/4;
    else if(max_frames>=1) return 1;
    else                   return 0;
}
#endif

#if CONFIG_AC3_DEMUXER
static int ac3_probe(AVProbeData *p)
{
    return ac3_eac3_probe(p, CODEC_ID_AC3);
}
#endif

#if CONFIG_EAC3_DEMUXER
static int eac3_probe(AVProbeData *p)
{
    return ac3_eac3_probe(p, CODEC_ID_EAC3);
}
#endif

/* Note: Do not forget to add new entries to the Makefile as well. */

#if CONFIG_AC3_DEMUXER
AVInputFormat ac3_demuxer = {
    "ac3",
    NULL_IF_CONFIG_SMALL("raw AC-3"),
    0,
    ac3_probe,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "ac3",
    .value = CODEC_ID_AC3,
};
#endif

#if CONFIG_AC3_MUXER
AVOutputFormat ac3_muxer = {
    "ac3",
    NULL_IF_CONFIG_SMALL("raw AC-3"),
    "audio/x-ac3",
    "ac3",
    0,
    CODEC_ID_AC3,
    CODEC_ID_NONE,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_DIRAC_DEMUXER
AVInputFormat dirac_demuxer = {
    "dirac",
    NULL_IF_CONFIG_SMALL("raw Dirac"),
    0,
    dirac_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .value = CODEC_ID_DIRAC,
};
#endif

#if CONFIG_DIRAC_MUXER
AVOutputFormat dirac_muxer = {
    "dirac",
    NULL_IF_CONFIG_SMALL("raw Dirac"),
    NULL,
    "drc",
    0,
    CODEC_ID_NONE,
    CODEC_ID_DIRAC,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_DNXHD_DEMUXER
AVInputFormat dnxhd_demuxer = {
    "dnxhd",
    NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
    0,
    dnxhd_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .value = CODEC_ID_DNXHD,
};
#endif

#if CONFIG_DNXHD_MUXER
AVOutputFormat dnxhd_muxer = {
    "dnxhd",
    NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
    NULL,
    "dnxhd",
    0,
    CODEC_ID_NONE,
    CODEC_ID_DNXHD,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_DTS_DEMUXER
AVInputFormat dts_demuxer = {
    "dts",
    NULL_IF_CONFIG_SMALL("raw DTS"),
    0,
    dts_probe,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "dts",
    .value = CODEC_ID_DTS,
};
#endif

#if CONFIG_DTS_MUXER
AVOutputFormat dts_muxer = {
    "dts",
    NULL_IF_CONFIG_SMALL("raw DTS"),
    "audio/x-dca",
    "dts",
    0,
    CODEC_ID_DTS,
    CODEC_ID_NONE,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_EAC3_DEMUXER
AVInputFormat eac3_demuxer = {
    "eac3",
    NULL_IF_CONFIG_SMALL("raw E-AC-3"),
    0,
    eac3_probe,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "eac3",
    .value = CODEC_ID_EAC3,
};
#endif

#if CONFIG_EAC3_MUXER
AVOutputFormat eac3_muxer = {
    "eac3",
    NULL_IF_CONFIG_SMALL("raw E-AC-3"),
    "audio/x-eac3",
    "eac3",
    0,
    CODEC_ID_EAC3,
    CODEC_ID_NONE,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_GSM_DEMUXER
AVInputFormat gsm_demuxer = {
    "gsm",
    NULL_IF_CONFIG_SMALL("raw GSM"),
    0,
    NULL,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "gsm",
    .value = CODEC_ID_GSM,
};
#endif

#if CONFIG_H261_DEMUXER
AVInputFormat h261_demuxer = {
    "h261",
    NULL_IF_CONFIG_SMALL("raw H.261"),
    0,
    h261_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "h261",
    .value = CODEC_ID_H261,
};
#endif

#if CONFIG_H261_MUXER
AVOutputFormat h261_muxer = {
    "h261",
    NULL_IF_CONFIG_SMALL("raw H.261"),
    "video/x-h261",
    "h261",
    0,
    CODEC_ID_NONE,
    CODEC_ID_H261,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_H263_DEMUXER
AVInputFormat h263_demuxer = {
    "h263",
    NULL_IF_CONFIG_SMALL("raw H.263"),
    0,
    h263_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
    .value = CODEC_ID_H263,
};
#endif

#if CONFIG_H263_MUXER
AVOutputFormat h263_muxer = {
    "h263",
    NULL_IF_CONFIG_SMALL("raw H.263"),
    "video/x-h263",
    "h263",
    0,
    CODEC_ID_NONE,
    CODEC_ID_H263,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_H264_DEMUXER
AVInputFormat h264_demuxer = {
    "h264",
    NULL_IF_CONFIG_SMALL("raw H.264 video format"),
    0,
    h264_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
    .value = CODEC_ID_H264,
};
#endif

#if CONFIG_H264_MUXER
AVOutputFormat h264_muxer = {
    "h264",
    NULL_IF_CONFIG_SMALL("raw H.264 video format"),
    NULL,
    "h264",
    0,
    CODEC_ID_NONE,
    CODEC_ID_H264,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_CAVSVIDEO_MUXER
AVOutputFormat cavsvideo_muxer = {
    "cavsvideo",
    NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),
    NULL,
    "cavs",
    0,
    CODEC_ID_NONE,
    CODEC_ID_CAVS,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_INGENIENT_DEMUXER
AVInputFormat ingenient_demuxer = {
    "ingenient",
    NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
    0,
    NULL,
    video_read_header,
    ingenient_read_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "cgi", // FIXME
    .value = CODEC_ID_MJPEG,
};
#endif

#if CONFIG_M4V_DEMUXER
AVInputFormat m4v_demuxer = {
    "m4v",
    NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),
    0,
    mpeg4video_probe, /** probing for MPEG-4 data */
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "m4v",
    .value = CODEC_ID_MPEG4,
};
#endif

#if CONFIG_M4V_MUXER
AVOutputFormat m4v_muxer = {
    "m4v",
    NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),
    NULL,
    "m4v",
    0,
    CODEC_ID_NONE,
    CODEC_ID_MPEG4,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_MJPEG_DEMUXER
AVInputFormat mjpeg_demuxer = {
    "mjpeg",
    NULL_IF_CONFIG_SMALL("raw MJPEG video"),
    0,
    NULL,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "mjpg,mjpeg",
    .value = CODEC_ID_MJPEG,
};
#endif

#if CONFIG_MJPEG_MUXER
AVOutputFormat mjpeg_muxer = {
    "mjpeg",
    NULL_IF_CONFIG_SMALL("raw MJPEG video"),
    "video/x-mjpeg",
    "mjpg,mjpeg",
    0,
    CODEC_ID_NONE,
    CODEC_ID_MJPEG,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_MLP_DEMUXER
AVInputFormat mlp_demuxer = {
    "mlp",
    NULL_IF_CONFIG_SMALL("raw MLP"),
    0,
    NULL,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "mlp",
    .value = CODEC_ID_MLP,
};
#endif

#if CONFIG_MLP_MUXER
AVOutputFormat mlp_muxer = {
    "mlp",
    NULL_IF_CONFIG_SMALL("raw MLP"),
    NULL,
    "mlp",
    0,
    CODEC_ID_MLP,
    CODEC_ID_NONE,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_SRT_MUXER
AVOutputFormat srt_muxer = {
    .name           = "srt",
    .long_name      = NULL_IF_CONFIG_SMALL("SubRip subtitle format"),
    .mime_type      = "application/x-subrip",
    .extensions     = "srt",
    .write_packet   = ff_raw_write_packet,
    .flags          = AVFMT_NOTIMESTAMPS,
    .subtitle_codec = CODEC_ID_SRT,
};
#endif

#if CONFIG_TRUEHD_DEMUXER
AVInputFormat truehd_demuxer = {
    "truehd",
    NULL_IF_CONFIG_SMALL("raw TrueHD"),
    0,
    NULL,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "thd",
    .value = CODEC_ID_TRUEHD,
};
#endif

#if CONFIG_TRUEHD_MUXER
AVOutputFormat truehd_muxer = {
    "truehd",
    NULL_IF_CONFIG_SMALL("raw TrueHD"),
    NULL,
    "thd",
    0,
    CODEC_ID_TRUEHD,
    CODEC_ID_NONE,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_MPEG1VIDEO_MUXER
AVOutputFormat mpeg1video_muxer = {
    "mpeg1video",
    NULL_IF_CONFIG_SMALL("raw MPEG-1 video"),
    "video/x-mpeg",
    "mpg,mpeg,m1v",
    0,
    CODEC_ID_NONE,
    CODEC_ID_MPEG1VIDEO,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_MPEG2VIDEO_MUXER
AVOutputFormat mpeg2video_muxer = {
    "mpeg2video",
    NULL_IF_CONFIG_SMALL("raw MPEG-2 video"),
    NULL,
    "m2v",
    0,
    CODEC_ID_NONE,
    CODEC_ID_MPEG2VIDEO,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_MPEGVIDEO_DEMUXER
AVInputFormat mpegvideo_demuxer = {
    "mpegvideo",
    NULL_IF_CONFIG_SMALL("raw MPEG video"),
    0,
    mpegvideo_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .value = CODEC_ID_MPEG1VIDEO,
};
#endif

#if CONFIG_CAVSVIDEO_DEMUXER
AVInputFormat cavsvideo_demuxer = {
    "cavsvideo",
    NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),
    0,
    cavsvideo_probe,
    video_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .value = CODEC_ID_CAVS,
};
#endif

#if CONFIG_NULL_MUXER
AVOutputFormat null_muxer = {
    "null",
    NULL_IF_CONFIG_SMALL("raw null video format"),
    NULL,
    NULL,
    0,
    AV_NE(CODEC_ID_PCM_S16BE, CODEC_ID_PCM_S16LE),
    CODEC_ID_RAWVIDEO,
    NULL,
    null_write_packet,
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_RAWVIDEO_DEMUXER
AVInputFormat rawvideo_demuxer = {
    "rawvideo",
    NULL_IF_CONFIG_SMALL("raw video format"),
    0,
    NULL,
    raw_read_header,
    rawvideo_read_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "yuv,cif,qcif,rgb",
    .value = CODEC_ID_RAWVIDEO,
};
#endif

#if CONFIG_RAWVIDEO_MUXER
AVOutputFormat rawvideo_muxer = {
    "rawvideo",
    NULL_IF_CONFIG_SMALL("raw video format"),
    NULL,
    "yuv,rgb",
    0,
    CODEC_ID_NONE,
    CODEC_ID_RAWVIDEO,
    NULL,
    ff_raw_write_packet,
    .flags= AVFMT_NOTIMESTAMPS,
};
#endif

#if CONFIG_SHORTEN_DEMUXER
AVInputFormat shorten_demuxer = {
    "shn",
    NULL_IF_CONFIG_SMALL("raw Shorten"),
    0,
    NULL,
    audio_read_header,
    ff_raw_read_partial_packet,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "shn",
    .value = CODEC_ID_SHORTEN,
};
#endif

#if CONFIG_VC1_DEMUXER
AVInputFormat vc1_demuxer = {
    "vc1",
    NULL_IF_CONFIG_SMALL("raw VC-1"),
    0,
    NULL /* vc1_probe */,
    video_read_header,
    ff_raw_read_partial_packet,
    .extensions = "vc1",
    .value = CODEC_ID_VC1,
};
#endif

/* PCM formats */

#define PCMINPUTDEF(name, long_name, ext, codec) \
AVInputFormat pcm_ ## name ## _demuxer = {\
    #name,\
    NULL_IF_CONFIG_SMALL(long_name),\
    0,\
    NULL,\
    raw_read_header,\
    raw_read_packet,\
    NULL,\
    pcm_read_seek,\
    .flags= AVFMT_GENERIC_INDEX,\
    .extensions = ext,\
    .value = codec,\
};

#define PCMOUTPUTDEF(name, long_name, ext, codec) \
AVOutputFormat pcm_ ## name ## _muxer = {\
    #name,\
    NULL_IF_CONFIG_SMALL(long_name),\
    NULL,\
    ext,\
    0,\
    codec,\
    CODEC_ID_NONE,\
    NULL,\
    ff_raw_write_packet,\
    .flags= AVFMT_NOTIMESTAMPS,\
};


#if  !CONFIG_MUXERS && CONFIG_DEMUXERS
#define PCMDEF(name, long_name, ext, codec) \
        PCMINPUTDEF(name, long_name, ext, codec)
#elif CONFIG_MUXERS && !CONFIG_DEMUXERS
#define PCMDEF(name, long_name, ext, codec) \
        PCMOUTPUTDEF(name, long_name, ext, codec)
#elif CONFIG_MUXERS && CONFIG_DEMUXERS
#define PCMDEF(name, long_name, ext, codec) \
        PCMINPUTDEF(name, long_name, ext, codec)\
        PCMOUTPUTDEF(name, long_name, ext, codec)
#else
#define PCMDEF(name, long_name, ext, codec)
#endif

#if HAVE_BIGENDIAN
#define BE_DEF(s) s
#define LE_DEF(s) NULL
#else
#define BE_DEF(s) NULL
#define LE_DEF(s) s
#endif

PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
       NULL, CODEC_ID_PCM_F64BE)

PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
       NULL, CODEC_ID_PCM_F64LE)

PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
       NULL, CODEC_ID_PCM_F32BE)

PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
       NULL, CODEC_ID_PCM_F32LE)

PCMDEF(s32be, "PCM signed 32 bit big-endian format",
       NULL, CODEC_ID_PCM_S32BE)

PCMDEF(s32le, "PCM signed 32 bit little-endian format",
       NULL, CODEC_ID_PCM_S32LE)

PCMDEF(s24be, "PCM signed 24 bit big-endian format",
       NULL, CODEC_ID_PCM_S24BE)

PCMDEF(s24le, "PCM signed 24 bit little-endian format",
       NULL, CODEC_ID_PCM_S24LE)

PCMDEF(s16be, "PCM signed 16 bit big-endian format",
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)

PCMDEF(s16le, "PCM signed 16 bit little-endian format",
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)

PCMDEF(s8, "PCM signed 8 bit format",
       "sb", CODEC_ID_PCM_S8)

PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
       NULL, CODEC_ID_PCM_U32BE)

PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
       NULL, CODEC_ID_PCM_U32LE)

PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
       NULL, CODEC_ID_PCM_U24BE)

PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
       NULL, CODEC_ID_PCM_U24LE)

PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)

PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)

PCMDEF(u8, "PCM unsigned 8 bit format",
       "ub", CODEC_ID_PCM_U8)

PCMDEF(alaw, "PCM A-law format",
       "al", CODEC_ID_PCM_ALAW)

PCMDEF(mulaw, "PCM mu-law format",
       "ul", CODEC_ID_PCM_MULAW)