sm64ex-coop/tools/aiff_extract_codebook.c

186 lines
4.9 KiB
C

/**
* Create an ADPCM codebook either by extracting it from an AIFF section, or
* by executing tabledesign.
*/
#define _XOPEN_SOURCE 500
#include <unistd.h>
#include <math.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
typedef short s16;
typedef int s32;
typedef unsigned char u8;
typedef unsigned int u32;
#define BSWAP16(x) x = __builtin_bswap16(x)
#define BSWAP32(x) x = __builtin_bswap32(x)
#define NORETURN __attribute__((noreturn))
#define UNUSED __attribute__((unused))
typedef struct
{
u32 start;
u32 end;
u32 count;
s16 state[16];
} ALADPCMloop;
static const char usage[] = "input.aiff";
static const char *progname, *infilename;
#define checked_fread(a, b, c, d) if (fread(a, b, c, d) != c) fail_parse("error parsing file")
NORETURN
void fail_parse(const char *fmt, ...)
{
char *formatted = NULL;
va_list ap;
va_start(ap, fmt);
int size = vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
if (size >= 0) {
size++;
formatted = malloc(size);
if (formatted != NULL) {
va_start(ap, fmt);
size = vsnprintf(formatted, size, fmt, ap);
va_end(ap);
if (size < 0) {
free(formatted);
formatted = NULL;
}
}
}
if (formatted != NULL) {
fprintf(stderr, "%s: %s [%s]\n", progname, formatted, infilename);
free(formatted);
}
exit(1);
}
s32 readaifccodebook(FILE *fhandle, s32 ****table, s16 *order, s16 *npredictors)
{
checked_fread(order, sizeof(s16), 1, fhandle);
BSWAP16(*order);
checked_fread(npredictors, sizeof(s16), 1, fhandle);
BSWAP16(*npredictors);
*table = malloc(*npredictors * sizeof(s32 **));
for (s32 i = 0; i < *npredictors; i++) {
(*table)[i] = malloc(8 * sizeof(s32 *));
for (s32 j = 0; j < 8; j++) {
(*table)[i][j] = malloc((*order + 8) * sizeof(s32));
}
}
for (s32 i = 0; i < *npredictors; i++) {
s32 **table_entry = (*table)[i];
for (s32 j = 0; j < *order; j++) {
for (s32 k = 0; k < 8; k++) {
s16 ts;
checked_fread(&ts, sizeof(s16), 1, fhandle);
BSWAP16(ts);
table_entry[k][j] = ts;
}
}
for (s32 k = 1; k < 8; k++) {
table_entry[k][*order] = table_entry[k - 1][*order - 1];
}
table_entry[0][*order] = 1 << 11;
for (s32 k = 1; k < 8; k++) {
s32 j = 0;
for (; j < k; j++) {
table_entry[j][k + *order] = 0;
}
for (; j < 8; j++) {
table_entry[j][k + *order] = table_entry[j - k][*order];
}
}
}
return 0;
}
int main(int argc, char **argv)
{
s16 order = -1;
s16 npredictors = -1;
s32 ***coefTable = NULL;
FILE *ifile;
progname = argv[0];
if (argc < 2) {
fprintf(stderr, "%s %s\n", progname, usage);
exit(1);
}
infilename = argv[1];
if ((ifile = fopen(infilename, "rb")) == NULL) {
fail_parse("AIFF file could not be opened");
exit(1);
}
char buf[5] = {0};
checked_fread(buf, 4, 1, ifile);
if (strcmp(buf, "FORM") != 0) fail_parse("not an AIFF file");
checked_fread(buf, 4, 1, ifile);
checked_fread(buf, 4, 1, ifile);
if (strcmp(buf, "AIFF") != 0 && strcmp(buf, "AIFC") != 0) {
fail_parse("not an AIFF file");
}
for (;;) {
s32 size;
if (!fread(buf, 4, 1, ifile) || !fread(&size, 4, 1, ifile)) break;
BSWAP32(size);
s32 nextOffset = ftell(ifile) + ((size + 1) & ~1);
if (strcmp(buf, "APPL") == 0) {
checked_fread(buf, 4, 1, ifile);
if (strcmp(buf, "stoc") == 0) {
u8 len;
checked_fread(&len, 1, 1, ifile);
if (len == 11) {
char chunkName[12];
s16 version;
checked_fread(chunkName, 11, 1, ifile);
chunkName[11] = '\0';
if (strcmp(chunkName, "VADPCMCODES") == 0) {
checked_fread(&version, sizeof(s16), 1, ifile);
BSWAP16(version);
if (version == 1) {
readaifccodebook(ifile, &coefTable, &order, &npredictors);
}
}
}
}
}
fseek(ifile, nextOffset, SEEK_SET);
}
fclose(ifile);
if (coefTable == NULL) {
execl("./tools/tabledesign", "tabledesign", "-s", "1", infilename, NULL);
} else {
printf("%d\n%d\n", order, npredictors);
for (s32 i = 0; i < npredictors; i++) {
for (s32 j = 0; j < order; j++) {
for (s32 k = 0; k < 8; k++) {
printf("% 5d ", coefTable[i][k][j]);
}
puts("");
}
}
}
return 0;
}