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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <limits.h>
#include "af.h"
// Convert from string to format
int af_str2fmt(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:
printf("Unknown special\n");
}
}
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;
}
char *af_fmt2str_short(int format)
{
switch(format)
{
// special
case AF_FORMAT_MU_LAW: return "mulaw";
case AF_FORMAT_A_LAW: return "alaw";
case AF_FORMAT_MPEG2: return "mpeg2";
case AF_FORMAT_AC3: return "ac3";
case AF_FORMAT_IMA_ADPCM: return "imaadpcm";
// ordinary
case AF_FORMAT_U8: return "u8";
case AF_FORMAT_S8: return "s8";
case AF_FORMAT_U16_LE: return "u16le";
case AF_FORMAT_U16_BE: return "u16be";
case AF_FORMAT_S16_LE: return "s16le";
case AF_FORMAT_S16_BE: return "s16be";
case AF_FORMAT_U24_LE: return "u24le";
case AF_FORMAT_U24_BE: return "u24be";
case AF_FORMAT_S24_LE: return "s24le";
case AF_FORMAT_S24_BE: return "s24be";
case AF_FORMAT_U32_LE: return "u32le";
case AF_FORMAT_U32_BE: return "u32be";
case AF_FORMAT_S32_LE: return "s32le";
case AF_FORMAT_S32_BE: return "s32be";
case AF_FORMAT_FLOAT_LE: return "floatle";
case AF_FORMAT_FLOAT_BE: return "floatbe";
}
return "??";
}
int af_str2fmt_short(char* str)
{
int i;
static struct {
const char *name;
const int format;
} 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 }
};
for (i = 0; table[i].name; i++)
if (!strcasecmp(str, table[i].name))
return table[i].format;
return -1;
}
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