1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <avdec.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int track = 0;
int stream = 0;
int sample_accurate = 0;
int main(int argc, char ** argv)
{
bgav_t * file;
int arg_index;
bgav_options_t * opt;
int64_t count;
int64_t first_pts = GAVL_TIME_UNDEFINED;
const gavl_audio_format_t * format;
gavl_audio_frame_t * frame;
int skip_neg = 1;
if(argc == 1)
{
fprintf(stderr,
"Usage: count_samples [-s] [-as stream] [-t track] [-n] <location>\n");
return 0;
}
file = bgav_create();
arg_index = 1;
while(arg_index < argc - 1)
{
if(!strcmp(argv[arg_index], "-s"))
{
sample_accurate = 1;
arg_index++;
}
else if(!strcmp(argv[arg_index], "-n"))
{
skip_neg = 0;
arg_index++;
}
else if(!strcmp(argv[arg_index], "-as"))
{
stream = strtol(argv[arg_index+1], NULL, 10);
arg_index+=2;
}
else if(!strcmp(argv[arg_index], "-t"))
{
track = strtol(argv[arg_index+1], NULL, 10);
arg_index+=2;
}
else
arg_index++;
}
opt = bgav_get_options(file);
if(sample_accurate)
bgav_options_set_sample_accurate(opt, 1);
if(!bgav_open(file, argv[argc-1]))
{
fprintf(stderr, "Could not open file %s\n",
argv[argc-1]);
bgav_close(file);
return -1;
}
if(track < 0 || track >= bgav_num_tracks(file))
{
fprintf(stderr,
"No such track %d\n", track);
return -1;
}
bgav_select_track(file, track);
if(sample_accurate && !bgav_can_seek_sample(file))
{
fprintf(stderr,
"Sample accurate access not possible for track %d\n", track+1);
return -1;
}
if(stream < 0 || stream >= bgav_num_audio_streams(file, track))
{
fprintf(stderr,
"No such stream %d\n", stream);
return -1;
}
bgav_set_audio_stream(file, stream, BGAV_STREAM_DECODE);
if(!bgav_start(file))
{
fprintf(stderr, "Starting decoders failed\n");
return -1;
}
else
fprintf(stderr, "Starting decoders done\n");
format = bgav_get_audio_format(file, stream);
frame = gavl_audio_frame_create(format);
count = 0;
while(bgav_read_audio(file, frame, stream, format->samples_per_frame))
{
if(first_pts == GAVL_TIME_UNDEFINED)
first_pts = frame->timestamp;
count += frame->valid_samples;
}
if(skip_neg)
{
if(first_pts < 0)
fprintf(stderr,
"Track %d stream %d contains %"PRId64" samples (skipped %"PRId64" below zero)\n",
track+1, stream+1, count + first_pts, -first_pts);
else
fprintf(stderr, "Track %d stream %d contains %"PRId64" samples\n",
track+1, stream+1, count);
}
else
{
if(first_pts < 0)
fprintf(stderr, "Track %d stream %d contains %"PRId64" samples (%"PRId64" below zero)\n",
track+1, stream+1, count, -first_pts);
else
fprintf(stderr, "Track %d stream %d contains %"PRId64" samples\n",
track+1, stream+1, count);
}
bgav_close(file);
gavl_audio_frame_destroy(frame);
return 0;
}
|
