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#include "mem.h"
#include "wavelet.h"
/**
* (The transform code is in wavelet_xform.c)
*/
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define MAX3(a,b,c) (MAX(a,MAX(b,c)))
Wavelet3DBuf* wavelet_3d_buf_new (uint32_t width, uint32_t height,
uint32_t frames)
{
Wavelet3DBuf* buf = (Wavelet3DBuf*) MALLOC (sizeof (Wavelet3DBuf));
uint32_t _w = width;
uint32_t _h = height;
uint32_t _f = frames;
int level;
if (!buf)
return NULL;
buf->data = (TYPE*) MALLOC (width * height * frames * sizeof (TYPE));
if (!buf->data) {
wavelet_3d_buf_destroy (buf);
return NULL;
}
buf->width = width;
buf->height = height;
buf->frames = frames;
buf->scales = 1;
while (_w > 1 || _h > 1 || _f > 1) {
buf->scales++;
_w = (_w+1)/2;
_h = (_h+1)/2;
_f = (_f+1)/2;
}
buf->w = (uint32_t*) MALLOC (buf->scales * sizeof (uint32_t));
buf->h = (uint32_t*) MALLOC (buf->scales * sizeof (uint32_t));
buf->f = (uint32_t*) MALLOC (buf->scales * sizeof (uint32_t));
buf->offset = (uint32_t (*) [8]) MALLOC (8 * buf->scales * sizeof (uint32_t));
buf->scratchbuf = (TYPE*) MALLOC (MAX3(width, height, frames) * sizeof (TYPE));
if (!buf->w || !buf->h || !buf->f || !buf->offset || !buf->scratchbuf) {
wavelet_3d_buf_destroy (buf);
return NULL;
}
buf->w [buf->scales-1] = width;
buf->h [buf->scales-1] = height;
buf->f [buf->scales-1] = frames;
for (level=buf->scales-2; level>=0; level--) {
buf->w [level] = (buf->w [level+1] + 1) / 2;
buf->h [level] = (buf->h [level+1] + 1) / 2;
buf->f [level] = (buf->f [level+1] + 1) / 2;
buf->offset[level][0] = 0;
buf->offset[level][1] = buf->w [level];
buf->offset[level][2] = buf->h [level] * width;
buf->offset[level][3] = buf->f [level] * width * height;
buf->offset[level][4] = buf->offset [level][2] + buf->w [level];
buf->offset[level][5] = buf->offset [level][3] + buf->w [level];
buf->offset[level][6] = buf->offset [level][3] + buf->offset [level][2];
buf->offset[level][7] = buf->offset [level][6] + buf->w [level];
}
return buf;
}
void wavelet_3d_buf_destroy (Wavelet3DBuf* buf)
{
if (buf) {
if (buf->data)
FREE (buf->data);
if (buf->w)
FREE (buf->w);
if (buf->h)
FREE (buf->h);
if (buf->f)
FREE (buf->f);
if (buf->offset)
FREE (buf->offset);
if (buf->scratchbuf)
FREE (buf->scratchbuf);
FREE (buf);
}
}
#if defined(DBG_XFORM)
#include "pnm.h"
void wavelet_3d_buf_dump (char *fmt,
uint32_t first_frame_in_buf,
uint32_t id,
Wavelet3DBuf* buf,
int16_t offset)
{
char fname [256];
uint32_t f;
for (f=0; f<buf->frames; f++) {
snprintf (fname, 256, fmt, id, first_frame_in_buf + f);
write_pgm16 (fname, buf->data + f * buf->width * buf->height,
buf->width, buf->height, offset);
}
}
#endif
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