Add support to input devices in ffprobe.
[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 #include "config.h"
23
24 #undef HAVE_AV_CONFIG_H
25 #include "libavformat/avformat.h"
26 #include "libavcodec/avcodec.h"
27 #include "libavcodec/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavdevice/avdevice.h"
30 #include "cmdutils.h"
31
32 const char program_name[] = "FFprobe";
33 const int program_birth_year = 2007;
34
35 static int do_show_format = 0;
36 static int do_show_streams = 0;
37
38 static int show_value_unit = 0;
39 static int use_value_prefix = 0;
40 static int use_byte_value_binary_prefix = 0;
41 static int use_value_sexagesimal_format = 0;
42
43 /* globals */
44 static const OptionDef options[];
45
46 /* FFprobe context */
47 static const char *input_filename;
48 static AVInputFormat *iformat = NULL;
49
50 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
51 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
52
53 static const char *unit_second_str = "s" ;
54 static const char *unit_hertz_str = "Hz" ;
55 static const char *unit_byte_str = "byte" ;
56 static const char *unit_bit_per_second_str = "bit/s";
57
58 static char *value_string(char *buf, int buf_size, double val, const char *unit)
59 {
60 if (unit == unit_second_str && use_value_sexagesimal_format) {
61 double secs;
62 int hours, mins;
63 secs = val;
64 mins = (int)secs / 60;
65 secs = secs - mins * 60;
66 hours = mins / 60;
67 mins %= 60;
68 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
69 } else if (use_value_prefix) {
70 const char *prefix_string;
71 int index;
72
73 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
74 index = (int) (log(val)/log(2)) / 10;
75 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
76 val /= pow(2, index*10);
77 prefix_string = binary_unit_prefixes[index];
78 } else {
79 index = (int) (log10(val)) / 3;
80 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
81 val /= pow(10, index*3);
82 prefix_string = decimal_unit_prefixes[index];
83 }
84
85 snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
86 } else {
87 snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
88 }
89
90 return buf;
91 }
92
93 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
94 {
95 if (val == AV_NOPTS_VALUE) {
96 snprintf(buf, buf_size, "N/A");
97 } else {
98 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
99 }
100
101 return buf;
102 }
103
104 static const char *codec_type_string(enum CodecType codec_type)
105 {
106 switch (codec_type) {
107 case CODEC_TYPE_VIDEO: return "video";
108 case CODEC_TYPE_AUDIO: return "audio";
109 case CODEC_TYPE_DATA: return "data";
110 case CODEC_TYPE_SUBTITLE: return "subtitle";
111 case CODEC_TYPE_ATTACHMENT: return "attachment";
112 default: return "unknown";
113 }
114 }
115
116 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
117 {
118 AVStream *stream = fmt_ctx->streams[stream_idx];
119 AVCodecContext *dec_ctx;
120 AVCodec *dec;
121 char val_str[128];
122 AVMetadataTag *tag;
123 char a, b, c, d;
124
125 printf("[STREAM]\n");
126
127 printf("index=%d\n", stream->index);
128
129 if ((dec_ctx = stream->codec)) {
130 if ((dec = dec_ctx->codec)) {
131 printf("codec_name=%s\n", dec->name);
132 printf("codec_long_name=%s\n", dec->long_name);
133 } else {
134 printf("codec_name=unknown\n");
135 }
136
137 printf("codec_type=%s\n", codec_type_string(dec_ctx->codec_type));
138 printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
139
140 /* print AVI/FourCC tag */
141 a = dec_ctx->codec_tag & 0xff;
142 b = dec_ctx->codec_tag>>8 & 0xff;
143 c = dec_ctx->codec_tag>>16 & 0xff;
144 d = dec_ctx->codec_tag>>24 & 0xff;
145 printf("codec_tag_string=");
146 if (isprint(a)) printf("%c", a); else printf("[%d]", a);
147 if (isprint(b)) printf("%c", b); else printf("[%d]", b);
148 if (isprint(c)) printf("%c", c); else printf("[%d]", c);
149 if (isprint(d)) printf("%c", d); else printf("[%d]", d);
150 printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag);
151
152 switch (dec_ctx->codec_type) {
153 case CODEC_TYPE_VIDEO:
154 printf("width=%d\n", dec_ctx->width);
155 printf("height=%d\n", dec_ctx->height);
156 printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
157 printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
158 dec_ctx->sample_aspect_ratio.den);
159 printf("display_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
160 dec_ctx->sample_aspect_ratio.den);
161 printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ?
162 av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
163 break;
164
165 case CODEC_TYPE_AUDIO:
166 printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
167 dec_ctx->sample_rate,
168 unit_hertz_str));
169 printf("channels=%d\n", dec_ctx->channels);
170 printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id));
171 break;
172 }
173 } else {
174 printf("codec_type=unknown\n");
175 }
176
177 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
178 printf("id=0x%x\n", stream->id);
179 printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den);
180 printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
181 printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den);
182 if (stream->language[0])
183 printf("language=%s\n", stream->language);
184 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time,
185 &stream->time_base));
186 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration,
187 &stream->time_base));
188
189 while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
190 printf("TAG:%s=%s\n", tag->key, tag->value);
191
192 printf("[/STREAM]\n");
193 }
194
195 static void show_format(AVFormatContext *fmt_ctx)
196 {
197 AVMetadataTag *tag = NULL;
198 char val_str[128];
199
200 printf("[FORMAT]\n");
201
202 printf("filename=%s\n", fmt_ctx->filename);
203 printf("nb_streams=%d\n", fmt_ctx->nb_streams);
204 printf("format_name=%s\n", fmt_ctx->iformat->name);
205 printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
206 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
207 &AV_TIME_BASE_Q));
208 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
209 &AV_TIME_BASE_Q));
210 printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
211 unit_byte_str));
212 printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
213 unit_bit_per_second_str));
214
215 while ((tag = av_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
216 printf("TAG:%s=%s\n", tag->key, tag->value);
217
218 printf("[/FORMAT]\n");
219 }
220
221 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
222 {
223 int err, i;
224 AVFormatContext *fmt_ctx;
225
226 fmt_ctx = avformat_alloc_context();
227
228 if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {
229 print_error(filename, err);
230 return err;
231 }
232
233 /* fill the streams in the format context */
234 if ((err = av_find_stream_info(fmt_ctx)) < 0) {
235 print_error(filename, err);
236 return err;
237 }
238
239 dump_format(fmt_ctx, 0, filename, 0);
240
241 /* bind a decoder to each input stream */
242 for (i = 0; i < fmt_ctx->nb_streams; i++) {
243 AVStream *stream = fmt_ctx->streams[i];
244 AVCodec *codec;
245
246 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
247 fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n",
248 stream->codec->codec_id, stream->index);
249 } else if (avcodec_open(stream->codec, codec) < 0) {
250 fprintf(stderr, "Error while opening codec for input stream %d\n",
251 stream->index);
252 }
253 }
254
255 *fmt_ctx_ptr = fmt_ctx;
256 return 0;
257 }
258
259 static int probe_file(const char *filename)
260 {
261 AVFormatContext *fmt_ctx;
262 int ret, i;
263
264 if ((ret = open_input_file(&fmt_ctx, filename)))
265 return ret;
266
267 if (do_show_streams)
268 for (i = 0; i < fmt_ctx->nb_streams; i++)
269 show_stream(fmt_ctx, i);
270
271 if (do_show_format)
272 show_format(fmt_ctx);
273
274 av_close_input_file(fmt_ctx);
275 return 0;
276 }
277
278 static void show_usage(void)
279 {
280 printf("Simple multimedia streams analyzer\n");
281 printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
282 printf("\n");
283 }
284
285 static void opt_format(const char *arg)
286 {
287 iformat = av_find_input_format(arg);
288 if (!iformat) {
289 fprintf(stderr, "Unknown input format: %s\n", arg);
290 exit(1);
291 }
292 }
293
294 static void opt_input_file(const char *arg)
295 {
296 if (input_filename) {
297 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
298 arg, input_filename);
299 exit(1);
300 }
301 if (!strcmp(arg, "-"))
302 arg = "pipe:";
303 input_filename = arg;
304 }
305
306 static void show_help(void)
307 {
308 show_usage();
309 show_help_options(options, "Main options:\n", 0, 0);
310 printf("\n");
311 }
312
313 static void opt_pretty(void)
314 {
315 show_value_unit = 1;
316 use_value_prefix = 1;
317 use_byte_value_binary_prefix = 1;
318 use_value_sexagesimal_format = 1;
319 }
320
321 static const OptionDef options[] = {
322 #include "cmdutils_common_opts.h"
323 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
324 { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
325 { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
326 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
327 "use binary prefixes for byte units" },
328 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
329 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
330 { "pretty", 0, {(void*)&opt_pretty},
331 "prettify the format of displayed values, make it more human readable" },
332 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
333 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
334 { NULL, },
335 };
336
337 int main(int argc, char **argv)
338 {
339 av_register_all();
340 #if CONFIG_AVDEVICE
341 avdevice_register_all();
342 #endif
343
344 show_banner();
345 parse_options(argc, argv, options, opt_input_file);
346
347 if (!input_filename) {
348 show_usage();
349 fprintf(stderr, "You have to specify one input file.\n");
350 fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
351 exit(1);
352 }
353
354 return probe_file(input_filename);
355 }