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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*
Audio File Library
Copyright 1998, Michael Pruett <michael@68k.org>
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307, USA.
*/
/*
printinfo.c
This file contains the function used by the sf commands to print
information regarding a file.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef __USE_SGI_HEADERS__
#include <dmedia/audiofile.h>
#else
#include <audiofile.h>
#endif
#include <stdio.h>
#include <stdlib.h>
char *copyrightstring (AFfilehandle file);
void printfileinfo (char *filename)
{
int version;
AFfilehandle file;
int sampleFormat, sampleWidth, byteOrder, compressionType;
char *copyright, *formatstring, *labelstring;
file = afOpenFile(filename, "r", NULL);
if (file == NULL)
return;
formatstring = afQueryPointer(AF_QUERYTYPE_FILEFMT, AF_QUERY_DESC,
afGetFileFormat(file, &version), 0, 0);
labelstring = afQueryPointer(AF_QUERYTYPE_FILEFMT, AF_QUERY_LABEL,
afGetFileFormat(file, &version), 0, 0);
if (formatstring == NULL || labelstring == NULL)
return;
printf("File Name %s\n", filename);
printf("File Format %s (%s)\n", formatstring, labelstring);
afGetSampleFormat(file, AF_DEFAULT_TRACK, &sampleFormat, &sampleWidth);
byteOrder = afGetByteOrder(file, AF_DEFAULT_TRACK);
printf("Data Format ");
compressionType = afGetCompression(file, AF_DEFAULT_TRACK);
if (compressionType == AF_COMPRESSION_NONE)
{
switch (sampleFormat)
{
case AF_SAMPFMT_TWOSCOMP:
printf("%d-bit integer (2's complement, %s)",
sampleWidth,
byteOrder == AF_BYTEORDER_BIGENDIAN ?
"big endian" : "little endian");
break;
case AF_SAMPFMT_UNSIGNED:
printf("%d-bit integer (unsigned, %s)",
sampleWidth,
byteOrder == AF_BYTEORDER_BIGENDIAN ?
"big endian" : "little endian");
break;
case AF_SAMPFMT_FLOAT:
printf("single-precision (32-bit) floating point, %s",
byteOrder == AF_BYTEORDER_BIGENDIAN ?
"big endian" : "little endian");
break;
case AF_SAMPFMT_DOUBLE:
printf("double-precision (64-bit) floating point, %s",
byteOrder == AF_BYTEORDER_BIGENDIAN ?
"big endian" : "little endian");
break;
default:
printf("unknown");
break;
}
}
else
{
char *compressionName;
compressionName = afQueryPointer(AF_QUERYTYPE_COMPRESSION,
AF_QUERY_NAME, compressionType,
0, 0);
if (compressionName == NULL)
printf("unknown compression");
else
printf("%s compression", compressionName);
}
printf("\n");
#if SIZEOF_OFF_T > SIZEOF_LONG
printf("Audio Data %lld bytes begins at offset %lld (%llx hex)\n",
#else
printf("Audio Data %ld bytes begins at offset %ld (%lx hex)\n",
#endif
afGetTrackBytes(file, AF_DEFAULT_TRACK),
afGetDataOffset(file, AF_DEFAULT_TRACK),
afGetDataOffset(file, AF_DEFAULT_TRACK));
#if SIZEOF_OFF_T > SIZEOF_LONG
printf(" %d channel%s, %lld frames\n",
#else
printf(" %d channel%s, %ld frames\n",
#endif
afGetChannels(file, AF_DEFAULT_TRACK),
afGetChannels(file, AF_DEFAULT_TRACK) > 1 ? "s" : "",
afGetFrameCount(file, AF_DEFAULT_TRACK));
printf("Sampling Rate %.2f Hz\n", afGetRate(file, AF_DEFAULT_TRACK));
printf("Duration %.3f seconds\n",
afGetFrameCount(file, AF_DEFAULT_TRACK) /
afGetRate(file, AF_DEFAULT_TRACK));
copyright = copyrightstring(file);
if (copyright)
{
printf("Copyright %s\n", copyright);
free(copyright);
}
afCloseFile(file);
}
char *copyrightstring (AFfilehandle file)
{
char *copyright = NULL;
int *miscids;
int i, misccount;
misccount = afGetMiscIDs(file, NULL);
miscids = malloc(sizeof (int) * misccount);
afGetMiscIDs(file, miscids);
for (i=0; i<misccount; i++)
{
char *data;
int datasize;
if (afGetMiscType(file, miscids[i]) != AF_MISC_COPY)
continue;
/*
If this code executes, the miscellaneous chunk is a
copyright chunk.
*/
datasize = afGetMiscSize(file, miscids[i]);
data = malloc(datasize);
afReadMisc(file, miscids[i], data, datasize);
copyright = data;
break;
}
free(miscids);
return copyright;
}
|
