Simplify some output messages in the v4l2 input device
[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 #include "libavformat/avformat.h"
25 #include "libavcodec/avcodec.h"
26 #include "libavcodec/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavdevice/avdevice.h"
29 #include "cmdutils.h"
30
31 const char program_name[] = "FFprobe";
32 const int program_birth_year = 2007;
33
34 static int do_show_format = 0;
35 static int do_show_streams = 0;
36
37 static int convert_tags = 0;
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 *media_type_string(enum AVMediaType media_type)
105 {
106 switch (media_type) {
107 case AVMEDIA_TYPE_VIDEO: return "video";
108 case AVMEDIA_TYPE_AUDIO: return "audio";
109 case AVMEDIA_TYPE_DATA: return "data";
110 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
111 case AVMEDIA_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 = NULL;
123 char a, b, c, d;
124 AVRational display_aspect_ratio;
125
126 printf("[STREAM]\n");
127
128 printf("index=%d\n", stream->index);
129
130 if ((dec_ctx = stream->codec)) {
131 if ((dec = dec_ctx->codec)) {
132 printf("codec_name=%s\n", dec->name);
133 printf("codec_long_name=%s\n", dec->long_name);
134 } else {
135 printf("codec_name=unknown\n");
136 }
137
138 printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type));
139 printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
140
141 /* print AVI/FourCC tag */
142 a = dec_ctx->codec_tag & 0xff;
143 b = dec_ctx->codec_tag>>8 & 0xff;
144 c = dec_ctx->codec_tag>>16 & 0xff;
145 d = dec_ctx->codec_tag>>24 & 0xff;
146 printf("codec_tag_string=");
147 if (isprint(a)) printf("%c", a); else printf("[%d]", a);
148 if (isprint(b)) printf("%c", b); else printf("[%d]", b);
149 if (isprint(c)) printf("%c", c); else printf("[%d]", c);
150 if (isprint(d)) printf("%c", d); else printf("[%d]", d);
151 printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag);
152
153 switch (dec_ctx->codec_type) {
154 case AVMEDIA_TYPE_VIDEO:
155 printf("width=%d\n", dec_ctx->width);
156 printf("height=%d\n", dec_ctx->height);
157 printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
158 printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
159 dec_ctx->sample_aspect_ratio.den);
160 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
161 dec_ctx->width*dec_ctx->sample_aspect_ratio.num,
162 dec_ctx->height*dec_ctx->sample_aspect_ratio.den,
163 1024*1024);
164 printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num,
165 display_aspect_ratio.den);
166 printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ?
167 av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
168 break;
169
170 case AVMEDIA_TYPE_AUDIO:
171 printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
172 dec_ctx->sample_rate,
173 unit_hertz_str));
174 printf("channels=%d\n", dec_ctx->channels);
175 printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id));
176 break;
177 }
178 } else {
179 printf("codec_type=unknown\n");
180 }
181
182 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
183 printf("id=0x%x\n", stream->id);
184 printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den);
185 printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
186 printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den);
187 if (stream->language[0])
188 printf("language=%s\n", stream->language);
189 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time,
190 &stream->time_base));
191 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration,
192 &stream->time_base));
193 if (stream->nb_frames)
194 printf("nb_frames=%"PRId64"\n", stream->nb_frames);
195
196 while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
197 printf("TAG:%s=%s\n", tag->key, tag->value);
198
199 printf("[/STREAM]\n");
200 }
201
202 static void show_format(AVFormatContext *fmt_ctx)
203 {
204 AVMetadataTag *tag = NULL;
205 char val_str[128];
206
207 printf("[FORMAT]\n");
208
209 printf("filename=%s\n", fmt_ctx->filename);
210 printf("nb_streams=%d\n", fmt_ctx->nb_streams);
211 printf("format_name=%s\n", fmt_ctx->iformat->name);
212 printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
213 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
214 &AV_TIME_BASE_Q));
215 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
216 &AV_TIME_BASE_Q));
217 printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
218 unit_byte_str));
219 printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
220 unit_bit_per_second_str));
221
222 if (convert_tags)
223 av_metadata_conv(fmt_ctx, NULL, fmt_ctx->iformat->metadata_conv);
224 while ((tag = av_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
225 printf("TAG:%s=%s\n", tag->key, tag->value);
226
227 printf("[/FORMAT]\n");
228 }
229
230 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
231 {
232 int err, i;
233 AVFormatContext *fmt_ctx;
234
235 fmt_ctx = avformat_alloc_context();
236
237 if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {
238 print_error(filename, err);
239 return err;
240 }
241
242 /* fill the streams in the format context */
243 if ((err = av_find_stream_info(fmt_ctx)) < 0) {
244 print_error(filename, err);
245 return err;
246 }
247
248 dump_format(fmt_ctx, 0, filename, 0);
249
250 /* bind a decoder to each input stream */
251 for (i = 0; i < fmt_ctx->nb_streams; i++) {
252 AVStream *stream = fmt_ctx->streams[i];
253 AVCodec *codec;
254
255 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
256 fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n",
257 stream->codec->codec_id, stream->index);
258 } else if (avcodec_open(stream->codec, codec) < 0) {
259 fprintf(stderr, "Error while opening codec for input stream %d\n",
260 stream->index);
261 }
262 }
263
264 *fmt_ctx_ptr = fmt_ctx;
265 return 0;
266 }
267
268 static int probe_file(const char *filename)
269 {
270 AVFormatContext *fmt_ctx;
271 int ret, i;
272
273 if ((ret = open_input_file(&fmt_ctx, filename)))
274 return ret;
275
276 if (do_show_streams)
277 for (i = 0; i < fmt_ctx->nb_streams; i++)
278 show_stream(fmt_ctx, i);
279
280 if (do_show_format)
281 show_format(fmt_ctx);
282
283 av_close_input_file(fmt_ctx);
284 return 0;
285 }
286
287 static void show_usage(void)
288 {
289 printf("Simple multimedia streams analyzer\n");
290 printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
291 printf("\n");
292 }
293
294 static void opt_format(const char *arg)
295 {
296 iformat = av_find_input_format(arg);
297 if (!iformat) {
298 fprintf(stderr, "Unknown input format: %s\n", arg);
299 exit(1);
300 }
301 }
302
303 static void opt_input_file(const char *arg)
304 {
305 if (input_filename) {
306 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
307 arg, input_filename);
308 exit(1);
309 }
310 if (!strcmp(arg, "-"))
311 arg = "pipe:";
312 input_filename = arg;
313 }
314
315 static void show_help(void)
316 {
317 show_usage();
318 show_help_options(options, "Main options:\n", 0, 0);
319 printf("\n");
320 }
321
322 static void opt_pretty(void)
323 {
324 show_value_unit = 1;
325 use_value_prefix = 1;
326 use_byte_value_binary_prefix = 1;
327 use_value_sexagesimal_format = 1;
328 }
329
330 static const OptionDef options[] = {
331 #include "cmdutils_common_opts.h"
332 { "convert_tags", OPT_BOOL, {(void*)&convert_tags}, "convert tag names to the FFmpeg generic tag names" },
333 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
334 { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
335 { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
336 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
337 "use binary prefixes for byte units" },
338 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
339 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
340 { "pretty", 0, {(void*)&opt_pretty},
341 "prettify the format of displayed values, make it more human readable" },
342 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
343 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
344 { NULL, },
345 };
346
347 int main(int argc, char **argv)
348 {
349 av_register_all();
350 #if CONFIG_AVDEVICE
351 avdevice_register_all();
352 #endif
353
354 show_banner();
355 parse_options(argc, argv, options, opt_input_file);
356
357 if (!input_filename) {
358 show_usage();
359 fprintf(stderr, "You have to specify one input file.\n");
360 fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
361 exit(1);
362 }
363
364 return probe_file(input_filename);
365 }