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