avinfo.c 17.2 KB
Newer Older
1
2
3
4
5
/* -*- tab-width:4;c-file-style:"cc-mode"; -*- */
/*
 * ffmpeg2theora.c -- Convert ffmpeg supported a/v files to Ogg Theora / Ogg Vorbis
 * Copyright (C) 2003-2008 <j@v2v.cc>
 *
6
 * gcc -o avinfo avinfo.c -DAVINFO `pkg-config --cflags --libs libavcodec libavformat`
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */

24
25
26
27
28
29
30
31
32
33
34
35
36
#if !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#if !defined(_LARGEFILE_SOURCE)
#define _LARGEFILE_SOURCE
#endif
#if !defined(_LARGEFILE64_SOURCE)
#define _LARGEFILE64_SOURCE
#endif
#if !defined(_FILE_OFFSET_BITS)
#define _FILE_OFFSET_BITS 64
#endif

37
38
39
40
41
42
43
44
45
46
47
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include <math.h>
#include <errno.h>
#include <sys/stat.h>

#include "libavformat/avformat.h"

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
#if !defined(off64_t)
#define off64_t off_t
#endif

#ifdef WIN32
#define fseeko fseeko64
#define ftello ftello64
#endif

#ifdef _BIG_ENDIAN
#define htonll(x) \
((((x) & 0xff00000000000000LL) >> 56) | \
(((x) & 0x00ff000000000000LL) >> 40) | \
(((x) & 0x0000ff0000000000LL) >> 24) | \
(((x) & 0x000000ff00000000LL) >> 8) | \
(((x) & 0x00000000ff000000LL) << 8) | \
(((x) & 0x0000000000ff0000LL) << 24) | \
(((x) & 0x000000000000ff00LL) << 40) | \
(((x) & 0x00000000000000ffLL) << 56))
#else
#define htonll(x) x
#endif

unsigned long long get_filesize(char const *filename) {
    unsigned long long size = 0;
    FILE *file = fopen(filename, "rb");
    if (file) {
        fseeko(file, 0, SEEK_END);
        size = ftello(file);
Jan Gerber's avatar
cleanup    
Jan Gerber committed
77
        fclose(file);
78
    }
79
    return size;
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
}

char const *fix_codec_name(char const *codec_name) {
    if (!strcmp(codec_name, "libschrodinger")) {
        codec_name = "dirac";
    }
    else if (!strcmp(codec_name, "vp6f")) {
        codec_name = "vp6";
    }
    else if (!strcmp(codec_name, "mpeg2video")) {
        codec_name = "mpeg2";
    }
    else if (!strcmp(codec_name, "mpeg1video")) {
        codec_name = "mpeg1";
    }
    else if (!strcmp(codec_name, "0x0000")) {
        codec_name = "mu-law";
    }
   return codec_name;
}

Jan Gerber's avatar
Jan Gerber committed
101
102
103
104
char *replace_str_all(char *str, char *orig, char *rep) {
  const char buffer[4096];
  char *p, *p_str = str, *p_buffer = (char *)buffer;
  int len = strlen(str);
Jan Gerber's avatar
Jan Gerber committed
105

Jan Gerber's avatar
Jan Gerber committed
106
107
108
109
110
111
112
113
114
115
116
117
  strncpy(p_buffer, str, len);
  while (p = strstr(p_str, orig)) {
    strncpy(p_buffer, p_str, p-p_str);
    p_buffer += (p-p_str);
    len = len - strlen(orig) + strlen(rep);    
    sprintf(p_buffer, "%s%s", rep, p+strlen(orig));
    p_str = p + strlen(orig);
    p_buffer += strlen(rep);
  }
  p = (char *)buffer;
  p[len] = '\0';
  return p;
Jan Gerber's avatar
Jan Gerber committed
118
119
}

120
121
122
enum {
    JSON_STRING,
    JSON_INT,
123
    JSON_LONGLONG,
124
125
126
    JSON_FLOAT,
} JSON_TYPES;

127
128
129
130
131
132
133
static void do_indent(FILE *output, int indent) {
    int i;
    for (i = 0; i < indent; i++)
        fprintf(output, "  ");
}

void json_add_key_value(FILE *output, char *key, void *value, int type, int last, int indent) {
Jan Gerber's avatar
Jan Gerber committed
134
    char *p;
135
136
137
    int i;
    
    do_indent(output, indent);
138
139
    switch(type) {
        case JSON_STRING:
Jan Gerber's avatar
Jan Gerber committed
140
            p = (char *)value;
Jan Gerber's avatar
Jan Gerber committed
141
142
            p = replace_str_all(p, "\\", "\\\\");
            p = replace_str_all(p, "\"", "\\\"");
143
            fprintf(output, "\"%s\": \"%s\"", key, p);
144
145
            break;
        case JSON_INT:
146
            fprintf(output, "\"%s\": %d", key, *(int *)value);
147
            break;
148
        case JSON_LONGLONG:
149
            fprintf(output, "\"%s\": %lld", key, *(unsigned long long *)value);
Jan Gerber's avatar
Jan Gerber committed
150
            break;
151
        case JSON_FLOAT:
152
            fprintf(output, "\"%s\": %f", key, *(float *)value);
153
154
            break;
    }
Jan Gerber's avatar
Jan Gerber committed
155
156
157
158
159
    if (last) {
        fprintf(output, "\n");
    } else {
        fprintf(output, ",\n");
    }
160
161
}

162
void json_codec_info(FILE *output, AVCodecContext *enc, int indent) {
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
    const char *codec_name;
    AVCodec *p;
    char buf1[32];
    int bitrate;
    AVRational display_aspect_ratio;

    p = avcodec_find_decoder(enc->codec_id);

    if (p) {
        codec_name = p->name;
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
        /* fake mpeg2 transport stream codec (currently not
           registered) */
        codec_name = "mpeg2ts";
    } else if (enc->codec_name[0] != '\0') {
        codec_name = enc->codec_name;
    } else {
        /* output avi tags */
        if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
           && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
            snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
                     enc->codec_tag & 0xff,
                     (enc->codec_tag >> 8) & 0xff,
                     (enc->codec_tag >> 16) & 0xff,
                     (enc->codec_tag >> 24) & 0xff,
                      enc->codec_tag);
        } else {
            snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
        }
        codec_name = buf1;
    }

    switch(enc->codec_type) {
    case CODEC_TYPE_VIDEO:
        codec_name = fix_codec_name(codec_name);
198
        json_add_key_value(output, "codec", (void *)codec_name, JSON_STRING, 0, indent);
199
        if (enc->pix_fmt != PIX_FMT_NONE) {
200
            json_add_key_value(output, "pixel_format", (void *)avcodec_get_pix_fmt_name(enc->pix_fmt), JSON_STRING, 0, indent);
201
202
        }
        if (enc->width) {
203
204
            json_add_key_value(output, "width", &enc->width, JSON_INT, 0, indent);
            json_add_key_value(output, "height", &enc->height, JSON_INT, 0, indent);
205
206
207
208
209
210
211
            if (enc->sample_aspect_ratio.num) {
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
                          enc->width*enc->sample_aspect_ratio.num,
                          enc->height*enc->sample_aspect_ratio.den,
                          1024*1024);
                snprintf(buf1, sizeof(buf1), "%d:%d",
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den);
212
                json_add_key_value(output, "pixel_aspect_ratio", buf1, JSON_STRING, 0, indent);
213
214
                snprintf(buf1, sizeof(buf1), "%d:%d",
                         display_aspect_ratio.num, display_aspect_ratio.den);
215
                json_add_key_value(output, "display_aspect_ratio", buf1, JSON_STRING, 0, indent);
216
217
218
219
220
            }
        }
        bitrate = enc->bit_rate;
        if (bitrate != 0) {
            float t = (float)bitrate / 1000;
221
            json_add_key_value(output, "bitrate", &t, JSON_FLOAT, 0, indent);
222
223
224
225
        }
        break;
    case CODEC_TYPE_AUDIO:
        codec_name = fix_codec_name(codec_name);
226
        json_add_key_value(output, "codec", (void *)codec_name, JSON_STRING, 0, indent);
227
        if (enc->sample_rate) {
228
            json_add_key_value(output, "samplerate", &enc->sample_rate, JSON_INT, 0, indent);
229
        }
230
        json_add_key_value(output, "channels", &enc->channels, JSON_INT, 0, indent);
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

        /* for PCM codecs, compute bitrate directly */
        switch(enc->codec_id) {
        case CODEC_ID_PCM_F64BE:
        case CODEC_ID_PCM_F64LE:
            bitrate = enc->sample_rate * enc->channels * 64;
            break;
        case CODEC_ID_PCM_S32LE:
        case CODEC_ID_PCM_S32BE:
        case CODEC_ID_PCM_U32LE:
        case CODEC_ID_PCM_U32BE:
        case CODEC_ID_PCM_F32BE:
        case CODEC_ID_PCM_F32LE:
            bitrate = enc->sample_rate * enc->channels * 32;
            break;
        case CODEC_ID_PCM_S24LE:
        case CODEC_ID_PCM_S24BE:
        case CODEC_ID_PCM_U24LE:
        case CODEC_ID_PCM_U24BE:
        case CODEC_ID_PCM_S24DAUD:
            bitrate = enc->sample_rate * enc->channels * 24;
            break;
        case CODEC_ID_PCM_S16LE:
        case CODEC_ID_PCM_S16BE:
        case CODEC_ID_PCM_S16LE_PLANAR:
        case CODEC_ID_PCM_U16LE:
        case CODEC_ID_PCM_U16BE:
            bitrate = enc->sample_rate * enc->channels * 16;
            break;
        case CODEC_ID_PCM_S8:
        case CODEC_ID_PCM_U8:
        case CODEC_ID_PCM_ALAW:
        case CODEC_ID_PCM_MULAW:
        case CODEC_ID_PCM_ZORK:
            bitrate = enc->sample_rate * enc->channels * 8;
            break;
        default:
            bitrate = enc->bit_rate;
            break;
        }
        if (bitrate != 0) {
            float t = (float)bitrate / 1000;
273
            json_add_key_value(output, "bitrate", &t, JSON_FLOAT, 0, indent);
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
        }
        break;
    /*
    case CODEC_TYPE_DATA:
        fprintf(output, "datacodec: %s\n", codec_name);
        bitrate = enc->bit_rate;
        break;
    case CODEC_TYPE_SUBTITLE:
        fprintf(output, "subtitle: %s\n", codec_name);
        bitrate = enc->bit_rate;
        break;
    case CODEC_TYPE_ATTACHMENT:
        fprintf(output, "attachment: : %s\n", codec_name);
        bitrate = enc->bit_rate;
        break;
    */
    default:
        //FIXME: ignore unkown for now
        /*
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
        */
        return;
    }
}


300
301
static void json_stream_format(FILE *output, AVFormatContext *ic, int i, int indent, int first, int type_filter) {
    static int _first = 1;
302
303
304
    char buf[1024];
    char buf1[32];
    int flags = ic->iformat->flags;
305

306
307
308
    AVStream *st = ic->streams[i];
    int g = av_gcd(st->time_base.num, st->time_base.den);
    AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL, 0);
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326

    if (first)
        _first = 1;

    if(st->codec->codec_type == type_filter){
        if (!_first)
            fprintf(output, ", ");
        _first = 0;
        fprintf(output, "{\n");

        json_codec_info(output, st->codec, indent + 1);
        if (st->sample_aspect_ratio.num && // default
            av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
            AVRational display_aspect_ratio;
            av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
                      st->codec->width*st->sample_aspect_ratio.num,
                      st->codec->height*st->sample_aspect_ratio.den,
                      1024*1024);
327
            snprintf(buf1, sizeof(buf1), "%d:%d",
328
329
                     st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
            json_add_key_value(output, "pixel_aspect_ratio", buf1, JSON_STRING, 0, indent + 1);
330
            snprintf(buf1, sizeof(buf1), "%d:%d",
331
332
333
334
335
336
337
338
339
340
341
342
343
                     display_aspect_ratio.num, display_aspect_ratio.den);
            json_add_key_value(output, "display_aspect_ratio", buf1, JSON_STRING, 0, indent + 1);
        }
        if(st->codec->codec_type == CODEC_TYPE_VIDEO){
            if (st->time_base.den && st->time_base.num && av_q2d(st->time_base) > 0.001) {
                snprintf(buf1, sizeof(buf1), "%d:%d",
                         st->time_base.den, st->time_base.num);
                json_add_key_value(output, "framerate", buf1, JSON_STRING, 0, indent + 1);
            } else {
                snprintf(buf1, sizeof(buf1), "%d:%d",
                         st->r_frame_rate.num, st->r_frame_rate.den);
                json_add_key_value(output, "framerate", buf1, JSON_STRING, 0, indent + 1);
            }
344
        }
345
346
347
        json_add_key_value(output, "id", &i, JSON_INT, 1, indent + 1);
        do_indent(output, indent-1);
        fprintf(output, "}");
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
static int utf8_validate (uint8_t *s, int n) {
  int i;
  int extra_bytes;
  int mask;

  i=0;
  while (i<n) {
    if (i < n-3 && (*(uint32_t *)(s+i) & 0x80808080) == 0) {
      i+=4;
      continue;
    }
    if (s[i] < 128) {
      i++;
      continue;
    }
    if ((s[i] & 0xe0) == 0xc0) {
      extra_bytes = 1;
      mask = 0x7f;
    } else if ((s[i] & 0xf0) == 0xe0) {
      extra_bytes = 2;
      mask = 0x1f;
    } else if ((s[i] & 0xf8) == 0xf0) {
      extra_bytes = 3;
      mask = 0x0f;
    } else {
      goto error;
    }
    if (i + extra_bytes >= n) goto error;
    while(extra_bytes--) {
      i++;
      if ((s[i] & 0xc0) != 0x80) goto error;
    }
    i++;
  }

error:
  return i == n;
}

void json_metadata(FILE *output, const AVFormatContext *av)
{
    int first = 1;
    AVMetadataTag *tag = NULL;
    while ((tag = av_metadata_get(av->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
        char uc_key[16];
        int i;
        if (strlen(tag->value) && utf8_validate (tag->value, strlen(tag->value))) {
            if (first) {
                first = 0;
                do_indent(output, 1);
                fprintf(output, "\"metadata\": {\n");
            }
            json_add_key_value(output, tag->key, tag->value, JSON_STRING, 0, 2);
        }
    }
    if (!first) {
        do_indent(output, 1);
        fprintf(output, "}\n");
    }
}

412
413
414
415
/* 
 * os hash
 * based on public domain example from
 * http://trac.opensubtitles.org/projects/opensubtitles/wiki/HashSourceCodes   
416
417
 * 
 * plus modification for files < 64k, buffer is filled with file data and padded with 0
418
 */
419

420
421
422
423
424
unsigned long long gen_oshash(char const *filename) {
    FILE *file;
    int i;
    unsigned long long t1=0;
    unsigned long long buffer1[8192*2];
Jan Gerber's avatar
Jan Gerber committed
425
    int used = 8192*2;
426
427
    file = fopen(filename, "rb");
    if (file) {
428
        //add filesize
429
430
431
432
        fseeko(file, 0, SEEK_END);
        t1 = ftello(file);
        fseeko(file, 0, SEEK_SET);

433
        if(t1 < 65536) {
Jan Gerber's avatar
Jan Gerber committed
434
435
            used = t1/8;
            fread(buffer1, used, 8, file);
436
437
        } else {
            fread(buffer1, 8192, 8, file);
438
            fseeko(file, -65536, SEEK_END);
439
440
            fread(&buffer1[8192], 8192, 8, file); 
        }
Jan Gerber's avatar
Jan Gerber committed
441
        for (i=0; i < used; i++)
442
            t1+=htonll(buffer1[i]);
443
444
445
446
447
        fclose(file);
    }
    return t1;
}

448
void json_oshash(FILE *output, char const *filename, int indent) {
Jan Gerber's avatar
Jan Gerber committed
449
    char hash[32];
Jan Gerber's avatar
Jan Gerber committed
450
#ifdef WIN32
451
    sprintf(hash,"%016I64x", gen_oshash(filename));
Jan Gerber's avatar
Jan Gerber committed
452
#else
453
    sprintf(hash,"%016qx", gen_oshash(filename));
Jan Gerber's avatar
Jan Gerber committed
454
#endif
Jan Gerber's avatar
cleanup    
Jan Gerber committed
455
456
    if (strcmp(hash,"0000000000000000") > 0)
        json_add_key_value(output, "oshash", (void *)hash, JSON_STRING, 0, indent);
457
458
459
}


460
461
462
/* "user interface" functions */
void json_format_info(FILE* output, AVFormatContext *ic, const char *url) {
    int i;
463
    unsigned long long filesize;
464
465

    fprintf(output, "{\n");
466
467
468
469
470
471
472
473
474
475
476
477
478
    if(ic) {
        if (ic->duration != AV_NOPTS_VALUE) {
            float secs;
            secs = (float)ic->duration / AV_TIME_BASE;
            json_add_key_value(output, "duration", &secs, JSON_FLOAT, 0, 1);
        } else {
            float t = -1;
            json_add_key_value(output, "duration", &t, JSON_FLOAT, 0, 1);
        }
        if (ic->bit_rate) {
            float t = (float)ic->bit_rate / 1000;
            json_add_key_value(output, "bitrate", &t, JSON_FLOAT, 0, 1);
        }
479

480
481
482
483
484
485
486
487
488
489
490
491
        do_indent(output, 1);
        fprintf(output, "\"video\": [");
        if(ic->nb_programs) {
            int j, k;
            for(j=0; j<ic->nb_programs; j++) {
                for(k=0; k<ic->programs[j]->nb_stream_indexes; k++)
                    json_stream_format(output, ic, ic->programs[j]->stream_index[k], 2, !k && !j, CODEC_TYPE_VIDEO);
             }
        } else {
            for(i=0;i<ic->nb_streams;i++) {
                json_stream_format(output, ic, i, 2, !i, CODEC_TYPE_VIDEO);
            }
492
        }
493
494
495
496
497
498
499
500
501
502
503
504
505
506
        fprintf(output, "],\n");

        do_indent(output, 1);
        fprintf(output, "\"audio\": [");
        if(ic->nb_programs) {
            int j, k;
            for(j=0; j<ic->nb_programs; j++) {
                for(k=0; k<ic->programs[j]->nb_stream_indexes; k++)
                    json_stream_format(output, ic, ic->programs[j]->stream_index[k], 2, !k && !j, CODEC_TYPE_AUDIO);
             }
        } else {
            for(i=0;i<ic->nb_streams;i++) {
                json_stream_format(output, ic, i, 2, !i, CODEC_TYPE_AUDIO);
            }
507
        }
508
        fprintf(output, "],\n");
509
        json_metadata(output, ic);
510
511
512
    } else {
        json_add_key_value(output, "code", "badfile", JSON_STRING, 0, 1);
        json_add_key_value(output, "error", "file does not exist or has unknown format.", JSON_STRING, 0, 1);
513
514
515
    }
    json_oshash(output, url, 1);
    json_add_key_value(output, "path", (void *)url, JSON_STRING, 0, 1);
516

Jan Gerber's avatar
Jan Gerber committed
517
    filesize = get_filesize(url);
518
    json_add_key_value(output, "size", &filesize, JSON_LONGLONG, 1, 1);
519

520
521
522
    fprintf(output, "}\n");
}

523
#ifdef AVINFO
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
int main(int argc, char **argv) {
    char inputfile_name[255];
    AVInputFormat *input_fmt = NULL;
    AVFormatParameters *formatParams = NULL;
    AVFormatContext *context;
    FILE* output = stdout;
    
    avcodec_register_all();
    av_register_all();

    if(argc == 1) {
        fprintf(stderr, "usage: %s avfile [outputfile]\n", argv[0]);
        exit(1);
    }
    snprintf(inputfile_name, sizeof(inputfile_name),"%s", argv[1]);
    if(argc == 3) {
        output = fopen(argv[2], "w");
    }
    
    if (av_open_input_file(&context, inputfile_name, input_fmt, 0, formatParams) >= 0) {
        if (av_find_stream_info(context) >= 0) {
            json_format_info(output, context, inputfile_name);
        }
    }
    if(output != stdout) {
        fclose(output);
    }
}
552
#endif