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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*=============================================================================
//
// This software has been released under the terms of the GNU General Public
// license. See http://www.gnu.org/copyleft/gpl.html for details.
//
// Copyright 2005 Alex Beregszaszi
//
//=============================================================================
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <limits.h>
#include "af.h"
#include "help_mp.h"
// Convert from string to format
int af_str2fmt(const char* str)
{
int format=0;
// Scan for endianess
if(strstr(str,"be") || strstr(str,"BE"))
format |= AF_FORMAT_BE;
else if(strstr(str,"le") || strstr(str,"LE"))
format |= AF_FORMAT_LE;
else
format |= AF_FORMAT_NE;
// Scan for special formats
if(strstr(str,"mulaw") || strstr(str,"MULAW")){
format |= AF_FORMAT_MU_LAW; return format;
}
if(strstr(str,"alaw") || strstr(str,"ALAW")){
format |= AF_FORMAT_A_LAW; return format;
}
if(strstr(str,"ac3") || strstr(str,"AC3")){
format |= AF_FORMAT_AC3; return format;
}
if(strstr(str,"mpeg2") || strstr(str,"MPEG2")){
format |= AF_FORMAT_MPEG2; return format;
}
if(strstr(str,"imaadpcm") || strstr(str,"IMAADPCM")){
format |= AF_FORMAT_IMA_ADPCM; return format;
}
// Scan for int/float
if(strstr(str,"float") || strstr(str,"FLOAT")){
format |= AF_FORMAT_F; return format;
}
else
format |= AF_FORMAT_I;
// Scan for signed/unsigned
if(strstr(str,"unsigned") || strstr(str,"UNSIGNED"))
format |= AF_FORMAT_US;
else
format |= AF_FORMAT_SI;
return format;
}
inline int af_fmt2bits(int format)
{
return (format & AF_FORMAT_BITS_MASK)+8;
// return (((format & AF_FORMAT_BITS_MASK)>>3)+1) * 8;
#if 0
switch(format & AF_FORMAT_BITS_MASK)
{
case AF_FORMAT_8BIT: return 8;
case AF_FORMAT_16BIT: return 16;
case AF_FORMAT_24BIT: return 24;
case AF_FORMAT_32BIT: return 32;
case AF_FORMAT_48BIT: return 48;
}
#endif
return -1;
}
inline int af_bits2fmt(int bits)
{
return (bits/8 - 1) << 3;
}
/* Convert format to str input str is a buffer for the
converted string, size is the size of the buffer */
char* af_fmt2str(int format, char* str, int size)
{
int i=0;
if (size < 1)
return NULL;
size--; // reserve one for terminating 0
// Endianess
if(AF_FORMAT_LE == (format & AF_FORMAT_END_MASK))
i+=snprintf(str,size-i,"little-endian ");
else
i+=snprintf(str,size-i,"big-endian ");
if(format & AF_FORMAT_SPECIAL_MASK){
switch(format & AF_FORMAT_SPECIAL_MASK){
case(AF_FORMAT_MU_LAW):
i+=snprintf(&str[i],size-i,"mu-law "); break;
case(AF_FORMAT_A_LAW):
i+=snprintf(&str[i],size-i,"A-law "); break;
case(AF_FORMAT_MPEG2):
i+=snprintf(&str[i],size-i,"MPEG-2 "); break;
case(AF_FORMAT_AC3):
i+=snprintf(&str[i],size-i,"AC3 "); break;
case(AF_FORMAT_IMA_ADPCM):
i+=snprintf(&str[i],size-i,"IMA-ADPCM "); break;
default:
i+=snprintf(&str[i],size-i,MSGTR_AF_FORMAT_UnknownFormat);
}
}
else{
// Bits
i+=snprintf(&str[i],size-i,"%d-bit ", af_fmt2bits(format));
// Point
if(AF_FORMAT_F == (format & AF_FORMAT_POINT_MASK))
i+=snprintf(&str[i],size-i,"float ");
else{
// Sign
if(AF_FORMAT_US == (format & AF_FORMAT_SIGN_MASK))
i+=snprintf(&str[i],size-i,"unsigned ");
else
i+=snprintf(&str[i],size-i,"signed ");
i+=snprintf(&str[i],size-i,"int ");
}
}
// remove trailing space
if (i > 0 && str[i - 1] == ' ')
i--;
str[i] = 0; // make sure it is 0 terminated.
return str;
}
static struct {
const char *name;
const int format;
} af_fmtstr_table[] = {
{ "mulaw", AF_FORMAT_MU_LAW },
{ "alaw", AF_FORMAT_A_LAW },
{ "mpeg2", AF_FORMAT_MPEG2 },
{ "ac3", AF_FORMAT_AC3 },
{ "imaadpcm", AF_FORMAT_IMA_ADPCM },
{ "u8", AF_FORMAT_U8 },
{ "s8", AF_FORMAT_S8 },
{ "u16le", AF_FORMAT_U16_LE },
{ "u16be", AF_FORMAT_U16_BE },
{ "u16ne", AF_FORMAT_U16_NE },
{ "s16le", AF_FORMAT_S16_LE },
{ "s16be", AF_FORMAT_S16_BE },
{ "s16ne", AF_FORMAT_S16_NE },
{ "u24le", AF_FORMAT_U24_LE },
{ "u24be", AF_FORMAT_U24_BE },
{ "u24ne", AF_FORMAT_U24_NE },
{ "s24le", AF_FORMAT_S24_LE },
{ "s24be", AF_FORMAT_S24_BE },
{ "s24ne", AF_FORMAT_S24_NE },
{ "u32le", AF_FORMAT_U32_LE },
{ "u32be", AF_FORMAT_U32_BE },
{ "u32ne", AF_FORMAT_U32_NE },
{ "s32le", AF_FORMAT_S32_LE },
{ "s32be", AF_FORMAT_S32_BE },
{ "s32ne", AF_FORMAT_S32_NE },
{ "floatle", AF_FORMAT_FLOAT_LE },
{ "floatbe", AF_FORMAT_FLOAT_BE },
{ "floatne", AF_FORMAT_FLOAT_NE },
{ NULL, 0 }
};
const char *af_fmt2str_short(int format)
{
int i;
for (i = 0; af_fmtstr_table[i].name; i++)
if (af_fmtstr_table[i].format == format)
return af_fmtstr_table[i].name;
return "??";
}
int af_str2fmt_short(const char* str)
{
int i;
for (i = 0; af_fmtstr_table[i].name; i++)
if (!strcasecmp(str, af_fmtstr_table[i].name))
return af_fmtstr_table[i].format;
return -1;
}
|
