1/*
2 * avprobe : Simple Media Prober based on the Libav libraries
3 * Copyright (c) 2007-2010 Stefano Sabatini
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "config.h"
23
24#include "libavformat/avformat.h"
25#include "libavcodec/avcodec.h"
26#include "libavutil/opt.h"
27#include "libavutil/pixdesc.h"
28#include "libavutil/dict.h"
29#include "libavdevice/avdevice.h"
30#include "cmdutils.h"
31
32const char program_name[] = "avprobe";
33const int program_birth_year = 2007;
34
35static int do_show_format  = 0;
36static int do_show_packets = 0;
37static int do_show_streams = 0;
38
39static int show_value_unit              = 0;
40static int use_value_prefix             = 0;
41static int use_byte_value_binary_prefix = 0;
42static int use_value_sexagesimal_format = 0;
43
44/* globals */
45static const OptionDef options[];
46
47/* AVprobe context */
48static const char *input_filename;
49static AVInputFormat *iformat = NULL;
50
51static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
52static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P"  };
53
54static const char *unit_second_str          = "s"    ;
55static const char *unit_hertz_str           = "Hz"   ;
56static const char *unit_byte_str            = "byte" ;
57static const char *unit_bit_per_second_str  = "bit/s";
58
59void exit_program(int ret)
60{
61    exit(ret);
62}
63
64static char *value_string(char *buf, int buf_size, double val, const char *unit)
65{
66    if (unit == unit_second_str && use_value_sexagesimal_format) {
67        double secs;
68        int hours, mins;
69        secs  = val;
70        mins  = (int)secs / 60;
71        secs  = secs - mins * 60;
72        hours = mins / 60;
73        mins %= 60;
74        snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
75    } else if (use_value_prefix) {
76        const char *prefix_string;
77        int index;
78
79        if (unit == unit_byte_str && use_byte_value_binary_prefix) {
80            index = (int) (log(val)/log(2)) / 10;
81            index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
82            val  /= pow(2, index * 10);
83            prefix_string = binary_unit_prefixes[index];
84        } else {
85            index = (int) (log10(val)) / 3;
86            index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
87            val  /= pow(10, index * 3);
88            prefix_string = decimal_unit_prefixes[index];
89        }
90
91        snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string,
92                 show_value_unit ? unit : "");
93    } else {
94        snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
95    }
96
97    return buf;
98}
99
100static char *time_value_string(char *buf, int buf_size, int64_t val,
101                               const AVRational *time_base)
102{
103    if (val == AV_NOPTS_VALUE) {
104        snprintf(buf, buf_size, "N/A");
105    } else {
106        value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
107    }
108
109    return buf;
110}
111
112static char *ts_value_string (char *buf, int buf_size, int64_t ts)
113{
114    if (ts == AV_NOPTS_VALUE) {
115        snprintf(buf, buf_size, "N/A");
116    } else {
117        snprintf(buf, buf_size, "%"PRId64, ts);
118    }
119
120    return buf;
121}
122
123static const char *media_type_string(enum AVMediaType media_type)
124{
125    switch (media_type) {
126    case AVMEDIA_TYPE_VIDEO:      return "video";
127    case AVMEDIA_TYPE_AUDIO:      return "audio";
128    case AVMEDIA_TYPE_DATA:       return "data";
129    case AVMEDIA_TYPE_SUBTITLE:   return "subtitle";
130    case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
131    default:                      return "unknown";
132    }
133}
134
135static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
136{
137    char val_str[128];
138    AVStream *st = fmt_ctx->streams[pkt->stream_index];
139
140    printf("[PACKET]\n");
141    printf("codec_type=%s\n", media_type_string(st->codec->codec_type));
142    printf("stream_index=%d\n", pkt->stream_index);
143    printf("pts=%s\n", ts_value_string(val_str, sizeof(val_str), pkt->pts));
144    printf("pts_time=%s\n", time_value_string(val_str, sizeof(val_str),
145                                              pkt->pts, &st->time_base));
146    printf("dts=%s\n", ts_value_string(val_str, sizeof(val_str), pkt->dts));
147    printf("dts_time=%s\n", time_value_string(val_str, sizeof(val_str),
148                                              pkt->dts, &st->time_base));
149    printf("duration=%s\n", ts_value_string(val_str, sizeof(val_str),
150                                            pkt->duration));
151    printf("duration_time=%s\n", time_value_string(val_str, sizeof(val_str),
152                                                   pkt->duration,
153                                                   &st->time_base));
154    printf("size=%s\n", value_string(val_str, sizeof(val_str),
155                                     pkt->size, unit_byte_str));
156    printf("pos=%"PRId64"\n", pkt->pos);
157    printf("flags=%c\n", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
158    printf("[/PACKET]\n");
159}
160
161static void show_packets(AVFormatContext *fmt_ctx)
162{
163    AVPacket pkt;
164
165    av_init_packet(&pkt);
166
167    while (!av_read_frame(fmt_ctx, &pkt))
168        show_packet(fmt_ctx, &pkt);
169}
170
171static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
172{
173    AVStream *stream = fmt_ctx->streams[stream_idx];
174    AVCodecContext *dec_ctx;
175    AVCodec *dec;
176    char val_str[128];
177    AVDictionaryEntry *tag = NULL;
178    AVRational display_aspect_ratio;
179
180    printf("[STREAM]\n");
181
182    printf("index=%d\n", stream->index);
183
184    if ((dec_ctx = stream->codec)) {
185        if ((dec = dec_ctx->codec)) {
186            printf("codec_name=%s\n", dec->name);
187            printf("codec_long_name=%s\n", dec->long_name);
188        } else {
189            printf("codec_name=unknown\n");
190        }
191
192        printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type));
193        printf("codec_time_base=%d/%d\n",
194               dec_ctx->time_base.num, dec_ctx->time_base.den);
195
196        /* print AVI/FourCC tag */
197        av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
198        printf("codec_tag_string=%s\n", val_str);
199        printf("codec_tag=0x%04x\n", dec_ctx->codec_tag);
200
201        switch (dec_ctx->codec_type) {
202        case AVMEDIA_TYPE_VIDEO:
203            printf("width=%d\n", dec_ctx->width);
204            printf("height=%d\n", dec_ctx->height);
205            printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
206            if (dec_ctx->sample_aspect_ratio.num) {
207                printf("sample_aspect_ratio=%d:%d\n",
208                       dec_ctx->sample_aspect_ratio.num,
209                       dec_ctx->sample_aspect_ratio.den);
210                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
211                          dec_ctx->width  * dec_ctx->sample_aspect_ratio.num,
212                          dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
213                          1024*1024);
214                printf("display_aspect_ratio=%d:%d\n",
215                       display_aspect_ratio.num, display_aspect_ratio.den);
216            }
217            printf("pix_fmt=%s\n",
218                   dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name
219                                                    : "unknown");
220            printf("level=%d\n", dec_ctx->level);
221            break;
222
223        case AVMEDIA_TYPE_AUDIO:
224            printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
225                                                    dec_ctx->sample_rate,
226                                                    unit_hertz_str));
227            printf("channels=%d\n", dec_ctx->channels);
228            printf("bits_per_sample=%d\n",
229                   av_get_bits_per_sample(dec_ctx->codec_id));
230            break;
231        }
232    } else {
233        printf("codec_type=unknown\n");
234    }
235
236    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
237        printf("id=0x%x\n", stream->id);
238    printf("r_frame_rate=%d/%d\n",
239           stream->r_frame_rate.num, stream->r_frame_rate.den);
240    printf("avg_frame_rate=%d/%d\n",
241           stream->avg_frame_rate.num, stream->avg_frame_rate.den);
242    printf("time_base=%d/%d\n",
243           stream->time_base.num, stream->time_base.den);
244    printf("start_time=%s\n",
245           time_value_string(val_str, sizeof(val_str),
246                             stream->start_time, &stream->time_base));
247    printf("duration=%s\n",
248           time_value_string(val_str, sizeof(val_str),
249                             stream->duration, &stream->time_base));
250    if (stream->nb_frames)
251        printf("nb_frames=%"PRId64"\n", stream->nb_frames);
252
253    while ((tag = av_dict_get(stream->metadata, "", tag,
254                              AV_DICT_IGNORE_SUFFIX)))
255        printf("TAG:%s=%s\n", tag->key, tag->value);
256
257    printf("[/STREAM]\n");
258}
259
260static void show_format(AVFormatContext *fmt_ctx)
261{
262    AVDictionaryEntry *tag = NULL;
263    char val_str[128];
264    int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
265
266    printf("[FORMAT]\n");
267
268    printf("filename=%s\n", fmt_ctx->filename);
269    printf("nb_streams=%d\n", fmt_ctx->nb_streams);
270    printf("format_name=%s\n", fmt_ctx->iformat->name);
271    printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
272    printf("start_time=%s\n",
273           time_value_string(val_str, sizeof(val_str),
274                             fmt_ctx->start_time, &AV_TIME_BASE_Q));
275    printf("duration=%s\n",
276           time_value_string(val_str, sizeof(val_str),
277                             fmt_ctx->duration, &AV_TIME_BASE_Q));
278    printf("size=%s\n", size >= 0 ? value_string(val_str, sizeof(val_str),
279                                                 size, unit_byte_str)
280                                  : "unknown");
281    printf("bit_rate=%s\n",
282           value_string(val_str, sizeof(val_str),
283                        fmt_ctx->bit_rate, unit_bit_per_second_str));
284
285    while ((tag = av_dict_get(fmt_ctx->metadata, "", tag,
286                              AV_DICT_IGNORE_SUFFIX)))
287        printf("TAG:%s=%s\n", tag->key, tag->value);
288
289    printf("[/FORMAT]\n");
290}
291
292static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
293{
294    int err, i;
295    AVFormatContext *fmt_ctx = NULL;
296    AVDictionaryEntry *t;
297
298    if ((err = avformat_open_input(&fmt_ctx, filename,
299                                   iformat, &format_opts)) < 0) {
300        print_error(filename, err);
301        return err;
302    }
303    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
304        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
305        return AVERROR_OPTION_NOT_FOUND;
306    }
307
308
309    /* fill the streams in the format context */
310    if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
311        print_error(filename, err);
312        return err;
313    }
314
315    av_dump_format(fmt_ctx, 0, filename, 0);
316
317    /* bind a decoder to each input stream */
318    for (i = 0; i < fmt_ctx->nb_streams; i++) {
319        AVStream *stream = fmt_ctx->streams[i];
320        AVCodec *codec;
321
322        if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
323            fprintf(stderr,
324                    "Unsupported codec with id %d for input stream %d\n",
325                    stream->codec->codec_id, stream->index);
326        } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
327            fprintf(stderr, "Error while opening codec for input stream %d\n",
328                    stream->index);
329        }
330    }
331
332    *fmt_ctx_ptr = fmt_ctx;
333    return 0;
334}
335
336static int probe_file(const char *filename)
337{
338    AVFormatContext *fmt_ctx;
339    int ret, i;
340
341    if ((ret = open_input_file(&fmt_ctx, filename)))
342        return ret;
343
344    if (do_show_packets)
345        show_packets(fmt_ctx);
346
347    if (do_show_streams)
348        for (i = 0; i < fmt_ctx->nb_streams; i++)
349            show_stream(fmt_ctx, i);
350
351    if (do_show_format)
352        show_format(fmt_ctx);
353
354    avformat_close_input(&fmt_ctx);
355    return 0;
356}
357
358static void show_usage(void)
359{
360    printf("Simple multimedia streams analyzer\n");
361    printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
362    printf("\n");
363}
364
365static int opt_format(const char *opt, const char *arg)
366{
367    iformat = av_find_input_format(arg);
368    if (!iformat) {
369        fprintf(stderr, "Unknown input format: %s\n", arg);
370        return AVERROR(EINVAL);
371    }
372    return 0;
373}
374
375static void opt_input_file(void *optctx, const char *arg)
376{
377    if (input_filename) {
378        fprintf(stderr,
379                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
380                arg, input_filename);
381        exit(1);
382    }
383    if (!strcmp(arg, "-"))
384        arg = "pipe:";
385    input_filename = arg;
386}
387
388static void show_help(void)
389{
390    av_log_set_callback(log_callback_help);
391    show_usage();
392    show_help_options(options, "Main options:\n", 0, 0);
393    printf("\n");
394    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
395}
396
397static void opt_pretty(void)
398{
399    show_value_unit              = 1;
400    use_value_prefix             = 1;
401    use_byte_value_binary_prefix = 1;
402    use_value_sexagesimal_format = 1;
403}
404
405static const OptionDef options[] = {
406#include "cmdutils_common_opts.h"
407    { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
408    { "unit", OPT_BOOL, {(void*)&show_value_unit},
409      "show unit of the displayed values" },
410    { "prefix", OPT_BOOL, {(void*)&use_value_prefix},
411      "use SI prefixes for the displayed values" },
412    { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
413      "use binary prefixes for byte units" },
414    { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
415      "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
416    { "pretty", 0, {(void*)&opt_pretty},
417      "prettify the format of displayed values, make it more human readable" },
418    { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
419    { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
420    { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
421    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default},
422      "generic catch all option", "" },
423    { NULL, },
424};
425
426int main(int argc, char **argv)
427{
428    int ret;
429
430    parse_loglevel(argc, argv, options);
431    av_register_all();
432    avformat_network_init();
433    init_opts();
434#if CONFIG_AVDEVICE
435    avdevice_register_all();
436#endif
437
438    show_banner();
439    parse_options(NULL, argc, argv, options, opt_input_file);
440
441    if (!input_filename) {
442        show_usage();
443        fprintf(stderr, "You have to specify one input file.\n");
444        fprintf(stderr,
445                "Use -h to get full help or, even better, run 'man %s'.\n",
446                program_name);
447        exit(1);
448    }
449
450    ret = probe_file(input_filename);
451
452    avformat_network_deinit();
453
454    return ret;
455}
456