Add support to an option -f which forces the format to use for opening
[libav.git] / ffprobe.c
1 /*
2 * FFprobe : Simple Media Prober based on the FFmpeg libraries
3 * Copyright (c) 2007-2010 Stefano Sabatini
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #undef HAVE_AV_CONFIG_H
23 #include "libavformat/avformat.h"
24 #include "libavcodec/avcodec.h"
25 #include "libavcodec/opt.h"
26 #include "libavutil/pixdesc.h"
27 #include "cmdutils.h"
28
29 const char program_name[] = "FFprobe";
30 const int program_birth_year = 2007;
31
32 static int do_show_format = 0;
33 static int do_show_streams = 0;
34
35 static int show_value_unit = 0;
36 static int use_value_prefix = 0;
37 static int use_byte_value_binary_prefix = 0;
38 static int use_value_sexagesimal_format = 0;
39
40 /* globals */
41 static const OptionDef options[];
42
43 /* FFprobe context */
44 static const char *input_filename;
45 static AVInputFormat *iformat = NULL;
46
47 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
48 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
49
50 static const char *unit_second_str = "s" ;
51 static const char *unit_hertz_str = "Hz" ;
52 static const char *unit_byte_str = "byte" ;
53 static const char *unit_bit_per_second_str = "bit/s";
54
55 static char *value_string(char *buf, int buf_size, double val, const char *unit)
56 {
57 if (unit == unit_second_str && use_value_sexagesimal_format) {
58 double secs;
59 int hours, mins;
60 secs = val;
61 mins = (int)secs / 60;
62 secs = secs - mins * 60;
63 hours = mins / 60;
64 mins %= 60;
65 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
66 } else if (use_value_prefix) {
67 const char *prefix_string;
68 int index;
69
70 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
71 index = (int) (log(val)/log(2)) / 10;
72 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
73 val /= pow(2, index*10);
74 prefix_string = binary_unit_prefixes[index];
75 } else {
76 index = (int) (log10(val)) / 3;
77 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
78 val /= pow(10, index*3);
79 prefix_string = decimal_unit_prefixes[index];
80 }
81
82 snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
83 } else {
84 snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
85 }
86
87 return buf;
88 }
89
90 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
91 {
92 if (val == AV_NOPTS_VALUE) {
93 snprintf(buf, buf_size, "N/A");
94 } else {
95 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
96 }
97
98 return buf;
99 }
100
101 static const char *codec_type_string(enum CodecType codec_type)
102 {
103 switch (codec_type) {
104 case CODEC_TYPE_VIDEO: return "video";
105 case CODEC_TYPE_AUDIO: return "audio";
106 case CODEC_TYPE_DATA: return "data";
107 case CODEC_TYPE_SUBTITLE: return "subtitle";
108 case CODEC_TYPE_ATTACHMENT: return "attachment";
109 default: return "unknown";
110 }
111 }
112
113 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
114 {
115 AVStream *stream = fmt_ctx->streams[stream_idx];
116 AVCodecContext *dec_ctx;
117 AVCodec *dec;
118 char val_str[128];
119 AVMetadataTag *tag;
120 char a, b, c, d;
121
122 printf("[STREAM]\n");
123
124 printf("index=%d\n", stream->index);
125
126 if ((dec_ctx = stream->codec)) {
127 if ((dec = dec_ctx->codec)) {
128 printf("codec_name=%s\n", dec->name);
129 printf("codec_long_name=%s\n", dec->long_name);
130 } else {
131 printf("codec_name=unknown\n");
132 }
133
134 printf("codec_type=%s\n", codec_type_string(dec_ctx->codec_type));
135 printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
136
137 /* print AVI/FourCC tag */
138 a = dec_ctx->codec_tag & 0xff;
139 b = dec_ctx->codec_tag>>8 & 0xff;
140 c = dec_ctx->codec_tag>>16 & 0xff;
141 d = dec_ctx->codec_tag>>24 & 0xff;
142 printf("codec_tag_string=");
143 if (isprint(a)) printf("%c", a); else printf("[%d]", a);
144 if (isprint(b)) printf("%c", b); else printf("[%d]", b);
145 if (isprint(c)) printf("%c", c); else printf("[%d]", c);
146 if (isprint(d)) printf("%c", d); else printf("[%d]", d);
147 printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag);
148
149 switch (dec_ctx->codec_type) {
150 case CODEC_TYPE_VIDEO:
151 printf("width=%d\n", dec_ctx->width);
152 printf("height=%d\n", dec_ctx->height);
153 printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
154 printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
155 dec_ctx->sample_aspect_ratio.den);
156 printf("display_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
157 dec_ctx->sample_aspect_ratio.den);
158 printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ?
159 av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
160 break;
161
162 case CODEC_TYPE_AUDIO:
163 printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
164 dec_ctx->sample_rate,
165 unit_hertz_str));
166 printf("channels=%d\n", dec_ctx->channels);
167 printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id));
168 break;
169 }
170 } else {
171 printf("codec_type=unknown\n");
172 }
173
174 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
175 printf("id=0x%x\n", stream->id);
176 printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den);
177 printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
178 printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den);
179 if (stream->language[0])
180 printf("language=%s\n", stream->language);
181 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time,
182 &stream->time_base));
183 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration,
184 &stream->time_base));
185
186 while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
187 printf("%s=%s\n", tag->key, tag->value);
188
189 printf("[/STREAM]\n");
190 }
191
192 static void show_format(AVFormatContext *fmt_ctx)
193 {
194 AVMetadataTag *tag = NULL;
195 char val_str[128];
196
197 printf("[FORMAT]\n");
198
199 printf("filename=%s\n", fmt_ctx->filename);
200 printf("nb_streams=%d\n", fmt_ctx->nb_streams);
201 printf("format_name=%s\n", fmt_ctx->iformat->name);
202 printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
203 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
204 &AV_TIME_BASE_Q));
205 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
206 &AV_TIME_BASE_Q));
207 printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
208 unit_byte_str));
209 printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
210 unit_bit_per_second_str));
211
212 while ((tag = av_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
213 printf("TAG:%s=%s\n", tag->key, tag->value);
214
215 printf("[/FORMAT]\n");
216 }
217
218 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
219 {
220 int err, i;
221 AVFormatContext *fmt_ctx;
222
223 fmt_ctx = avformat_alloc_context();
224
225 if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {
226 print_error(filename, err);
227 return err;
228 }
229
230 /* fill the streams in the format context */
231 if ((err = av_find_stream_info(fmt_ctx)) < 0) {
232 print_error(filename, err);
233 return err;
234 }
235
236 dump_format(fmt_ctx, 0, filename, 0);
237
238 /* bind a decoder to each input stream */
239 for (i = 0; i < fmt_ctx->nb_streams; i++) {
240 AVStream *stream = fmt_ctx->streams[i];
241 AVCodec *codec;
242
243 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
244 fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n",
245 stream->codec->codec_id, stream->index);
246 } else if (avcodec_open(stream->codec, codec) < 0) {
247 fprintf(stderr, "Error while opening codec for input stream %d\n",
248 stream->index);
249 }
250 }
251
252 *fmt_ctx_ptr = fmt_ctx;
253 return 0;
254 }
255
256 static int probe_file(const char *filename)
257 {
258 AVFormatContext *fmt_ctx;
259 int ret, i;
260
261 if ((ret = open_input_file(&fmt_ctx, filename)))
262 return ret;
263
264 if (do_show_streams)
265 for (i = 0; i < fmt_ctx->nb_streams; i++)
266 show_stream(fmt_ctx, i);
267
268 if (do_show_format)
269 show_format(fmt_ctx);
270
271 av_close_input_file(fmt_ctx);
272 return 0;
273 }
274
275 static void show_usage(void)
276 {
277 printf("Simple multimedia streams analyzer\n");
278 printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
279 printf("\n");
280 }
281
282 static void opt_format(const char *arg)
283 {
284 iformat = av_find_input_format(arg);
285 if (!iformat) {
286 fprintf(stderr, "Unknown input format: %s\n", arg);
287 exit(1);
288 }
289 }
290
291 static void opt_input_file(const char *filename)
292 {
293 if (!strcmp(filename, "-"))
294 filename = "pipe:";
295 input_filename = filename;
296 }
297
298 static void show_help(void)
299 {
300 show_usage();
301 show_help_options(options, "Main options:\n", 0, 0);
302 printf("\n");
303 }
304
305 static void opt_pretty(void)
306 {
307 show_value_unit = 1;
308 use_value_prefix = 1;
309 use_byte_value_binary_prefix = 1;
310 use_value_sexagesimal_format = 1;
311 }
312
313 static const OptionDef options[] = {
314 #include "cmdutils_common_opts.h"
315 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
316 { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
317 { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
318 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
319 "use binary prefixes for byte units" },
320 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
321 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
322 { "pretty", 0, {(void*)&opt_pretty},
323 "prettify the format of displayed values, make it more human readable" },
324 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
325 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
326 { NULL, },
327 };
328
329 int main(int argc, char **argv)
330 {
331 av_register_all();
332
333 show_banner();
334 parse_options(argc, argv, options, opt_input_file);
335
336 if (!input_filename) {
337 show_usage();
338 fprintf(stderr, "You have to specify one input file.\n");
339 fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
340 exit(1);
341 }
342
343 return probe_file(input_filename);
344 }