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psxsdk/tools/wav2vag.c

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/*
* wav2vag
*
* Converts a WAV file to a PlayStation VAG file.
* Based on PSX VAG-Packer 0.1 by bITmASTER.
*
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include "endian.c"
#define BUFFER_SIZE 128*28
short wave[BUFFER_SIZE];
void find_predict( short *samples, double *d_samples, int *predict_nr, int *shift_factor );
void pack( double *d_samples, short *four_bit, int predict_nr, int shift_factor );
void fputi( int d, FILE *fp );
int main( int argc, char *argv[] )
{
FILE *fp, *vag;
short *ptr;
double d_samples[28];
short four_bit[28];
int predict_nr;
int shift_factor;
int flags;
int size;
int i, j, k;
unsigned char d;
char s[4];
int chunk_data;
short e;
int sample_freq = 0, sample_len;
char internal_name[16];
int enable_looping = 0;
int raw_output = 0;
int sraw = 0;
short sample_size;
unsigned char c;
if (argc < 3)
{
printf("wav2vag - Convert a WAV file to a PlayStation VAG sound file\n");
printf("usage: wav2vag [wav] [vag] <options>\n");
printf("\n");
printf("WAV files must have one channel (mono)\n");
printf("WAV data format must be either unsigned 8-bit or signed 16-bit PCM\n");
printf("\n");
printf("Options:\n");
printf(" -L - Make a looping sample (when it ends it is played again)\n");
printf(" -name=<name> - Set sample name\n");
printf(" -raw - Output only data, without VAG header\n");
printf(" -sraw8 - Source is RAW data, in 8-bit format\n");
printf(" -sraw16 - Source is RAW data, in 16-bit format\n");
printf(" -freq=<freq> - Force frequency in output VAG\n");
printf("\n");
printf("This utility is based on PSX VAG-Packer by bITmASTER\n");
return -1;
}
for(i = 0; i < sizeof(internal_name); i++)
internal_name[i] = 0;
strcpy(internal_name, "PSXSDK");
fp = fopen(argv[1], "rb");
if (fp == NULL)
{
printf("Can't open %s. Aborting.\n", argv[1]);
return -2;
}
for(i = 3; i < argc; i++)
{
if(strcmp(argv[i], "-L") == 0)
enable_looping = 1;
if(strncmp(argv[i], "-name=",6) == 0)
strncpy(internal_name, argv[i]+6, 15);
if(strcmp(argv[i], "-raw") == 0)
raw_output = 1;
if(strcmp(argv[i], "-sraw8") == 0)
{
fseek(fp, 0, SEEK_END);
sample_len = ftell(fp);
fseek(fp, 0, SEEK_SET);
sample_size = 8;
sample_freq = 44010;
sraw = 1;
}
if(strcmp(argv[i], "-sraw16") == 0)
{
fseek(fp, 0, SEEK_END);
sample_len = ftell(fp) / 2;
fseek(fp, 0, SEEK_SET);
sample_size = 16;
sample_freq = 44010;
sraw = 1;
}
if(strncmp(argv[i], "-freq=", 6) == 0)
{
sscanf(argv[i], "-freq=%d", &sample_freq);
}
}
if(sraw == 1)
goto convert_to_vag;
fread(s, 1, 4, fp);
if (strncmp(s, "RIFF", 4))
{
printf("%s is not in WAV format\n", argv[1]);
return -3;
}
fseek(fp, 8, SEEK_SET);
fread(s, 1, 4, fp);
if (strncmp(s, "WAVE", 4))
{
printf("%s is not in WAV format\n", argv[1]);
return -3;
}
fseek(fp, 8 + 4, SEEK_SET);
fread(s, 1, 4, fp);
if (strncmp(s, "fmt", 3))
{
printf("%s is not in WAV format\n", argv[1]);
return -3;
}
// fread(&chunk_data, sizeof(int), 1, fp);
chunk_data = read_le_dword(fp);
chunk_data += ftell(fp);
// fread(&e, 2, 1, fp);
e = read_le_word(fp);
if (e!=1)
{
printf("No PCM found in %s. Aborting.\n", argv[1]);
return -4;
}
// fread(&e, 2, 1, fp);
e = read_le_word(fp);
if (e!=1)
{
//printf( "must be MONO\n" );
printf("WAV file must have only one channel. Aborting.\n");
return -5;
}
if(sample_freq != 0)
fseek(fp, 4, SEEK_CUR);
else
//fread(&sample_freq, 4, 1, fp);
sample_freq = read_le_dword(fp);
fseek(fp, 4 + 2, SEEK_CUR);
// fread(&sample_size, 2, 1, fp);
sample_size = read_le_word(fp);
/* if (e!=16)
{
//printf( "only 16 bit samples\n" );
printf("The size of the samples of the WAV file must be 16-bit."
"Aborting.\n");
return -6;
}*/
fseek(fp, chunk_data, SEEK_SET);
fread(s, 1, 4, fp);
if (strncmp(s, "data", 4))
{
printf("No data chunk in %s. Aborting.\n", argv[1]);
return -7;
}
// fread(&sample_len, 4, 1, fp);
sample_len = read_le_dword(fp);
if(sample_size == 16)
sample_len /= 2;
/*strcpy( fname, argv[1] );
p = strrchr( fname, '.' );
p++;
strcpy( p, "vag" );*/
convert_to_vag:
vag = fopen(argv[2], "wb");
if (vag == NULL)
{
printf("Can't open output file. Aborting.\n");
return -8;
}
/* strcpy(internal_name, "PSXSDK");
for(i = 3; i < argc; i++)
{
if(strcmp(argv[i], "-L") == 0)
enable_looping = 1;
if(strncmp(argv[i], "-name=",6) == 0)
strncpy(internal_name, argv[i]+6, 15);
if(strcmp(argv[i], "-raw") == 0)
raw_output = 1;
}
*/
if(raw_output == 0)
{
fprintf( vag, "VAGp" ); // ID
fputi( 0x20, vag ); // Version
fputi( 0x00, vag ); // Reserved
size = sample_len / 28;
if( sample_len % 28 )
size++;
fputi( 16 * ( size + 2 ), vag ); // Data size
fputi( sample_freq, vag ); // Sampling frequency
for ( i = 0; i < 12; i++ ) // Reserved
fputc( 0, vag );
fwrite(internal_name, sizeof(char), 16, vag);
for( i = 0; i < 16; i++ )
fputc( 0, vag ); // ???
}
if(enable_looping)
flags = 6;
else
flags = 0;
while( sample_len > 0 ) {
size = ( sample_len >= BUFFER_SIZE ) ? BUFFER_SIZE : sample_len;
if(sample_size == 8)
{
for(i = 0; i < size; i++)
{
c = fgetc(fp);
wave[i] = c;
wave[i] ^= 0x80;
wave[i] <<= 8;
}
}
else
{
// fread( wave, sizeof( short ), size, fp );
for(i = 0; i < size; i++)
wave[i] = read_le_word(fp);
}
i = size / 28;
if ( size % 28 ) {
for ( j = size % 28; j < 28; j++ )
wave[28*i+j] = 0;
i++;
}
for ( j = 0; j < i; j++ ) { // pack 28 samples
ptr = wave + j * 28;
find_predict( ptr, d_samples, &predict_nr, &shift_factor );
pack( d_samples, four_bit, predict_nr, shift_factor );
d = ( predict_nr << 4 ) | shift_factor;
fputc( d, vag );
fputc( flags, vag );
for ( k = 0; k < 28; k += 2 ) {
d = ( ( four_bit[k+1] >> 8 ) & 0xf0 ) | ( ( four_bit[k] >> 12 ) & 0xf );
fputc( d, vag );
}
sample_len -= 28;
if ( sample_len < 28 && enable_looping == 0)
flags = 1;
if(enable_looping)
flags = 2;
}
}
fputc( ( predict_nr << 4 ) | shift_factor, vag );
if(enable_looping)
fputc(3, vag);
else
fputc( 7, vag ); // end flag
for ( i = 0; i < 14; i++ )
fputc( 0, vag );
fclose( fp );
fclose( vag );
// getch();
return( 0 );
}
static double f[5][2] = { { 0.0, 0.0 },
{ -60.0 / 64.0, 0.0 },
{ -115.0 / 64.0, 52.0 / 64.0 },
{ -98.0 / 64.0, 55.0 / 64.0 },
{ -122.0 / 64.0, 60.0 / 64.0 } };
void find_predict( short *samples, double *d_samples, int *predict_nr, int *shift_factor )
{
int i, j;
double buffer[28][5];
double min = 1e10;
double max[5];
double ds;
int min2;
int shift_mask;
static double _s_1 = 0.0; // s[t-1]
static double _s_2 = 0.0; // s[t-2]
double s_0, s_1, s_2;
for ( i = 0; i < 5; i++ ) {
max[i] = 0.0;
s_1 = _s_1;
s_2 = _s_2;
for ( j = 0; j < 28; j ++ ) {
s_0 = (double) samples[j]; // s[t-0]
if ( s_0 > 30719.0 )
s_0 = 30719.0;
if ( s_0 < - 30720.0 )
s_0 = -30720.0;
ds = s_0 + s_1 * f[i][0] + s_2 * f[i][1];
buffer[j][i] = ds;
if ( fabs( ds ) > max[i] )
max[i] = fabs( ds );
// printf( "%+5.2f\n", s2 );
s_2 = s_1; // new s[t-2]
s_1 = s_0; // new s[t-1]
}
if ( max[i] < min ) {
min = max[i];
*predict_nr = i;
}
if ( min <= 7 ) {
*predict_nr = 0;
break;
}
}
// store s[t-2] and s[t-1] in a static variable
// these than used in the next function call
_s_1 = s_1;
_s_2 = s_2;
for ( i = 0; i < 28; i++ )
d_samples[i] = buffer[i][*predict_nr];
// if ( min > 32767.0 )
// min = 32767.0;
min2 = ( int ) min;
shift_mask = 0x4000;
*shift_factor = 0;
while( *shift_factor < 12 ) {
if ( shift_mask & ( min2 + ( shift_mask >> 3 ) ) )
break;
(*shift_factor)++;
shift_mask = shift_mask >> 1;
}
}
void pack( double *d_samples, short *four_bit, int predict_nr, int shift_factor )
{
double ds;
int di;
double s_0;
static double s_1 = 0.0;
static double s_2 = 0.0;
int i;
for ( i = 0; i < 28; i++ ) {
s_0 = d_samples[i] + s_1 * f[predict_nr][0] + s_2 * f[predict_nr][1];
ds = s_0 * (double) ( 1 << shift_factor );
di = ( (int) ds + 0x800 ) & 0xfffff000;
if ( di > 32767 )
di = 32767;
if ( di < -32768 )
di = -32768;
four_bit[i] = (short) di;
di = di >> shift_factor;
s_2 = s_1;
s_1 = (double) di - s_0;
}
}
void fputi( int d, FILE *fp )
{
fputc( d >> 24, fp );
fputc( d >> 16, fp );
fputc( d >> 8, fp );
fputc( d, fp );
}
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