mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 16:26:39 +00:00
421 lines
9.9 KiB
C
421 lines
9.9 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 <assert.h>
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#include "wavelet.h"
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static void
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fwd_analyze_1 (const TYPE * x, TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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for (i = 0; i < k; i++)
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d[i] = x[(2 * i + 1) * stride] - x[2 * i * stride];
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}
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static void
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fwd_synthesize_1 (const TYPE * x, TYPE * s, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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for (i = 0; i < k; i++)
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s[i * stride] = x[2 * i * stride] + d[i] / 2;
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if (n & 1)
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s[k * stride] = x[2 * k * stride] + d[k - 1] / 2;
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}
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static void
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inv_analyze_1 (TYPE * x, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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for (i = 0; i < k; i++)
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x[(2 * i + 1) * stride] = d[i] + x[2 * i * stride];
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}
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static void
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inv_synthesize_1 (TYPE * x, const TYPE * s, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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for (i = 0; i < k; i++)
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x[2 * i * stride] = s[i] - d[i] / 2;
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if (n & 1)
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x[2 * k * stride] = s[k] - d[k - 1] / 2;
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}
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static void
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fwd_analyze_2 (const TYPE * x, TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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if (n & 1) {
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for (i = 0; i < k; i++)
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d[i] =
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x[(2 * i + 1) * stride] - (x[2 * i * stride] + x[(2 * i +
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2) * stride]) / 2;
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} else {
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for (i = 0; i < k - 1; i++)
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d[i] =
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x[(2 * i + 1) * stride] - (x[2 * i * stride] + x[(2 * i +
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2) * stride]) / 2;
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d[k - 1] = x[(n - 1) * stride] - x[(n - 2) * stride];
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}
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}
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static void
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fwd_synthesize_2 (const TYPE * x, TYPE * s, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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s[0] = x[0] + d[1] / 2;
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for (i = 1; i < k; i++)
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s[i * stride] = x[2 * i * stride] + (d[i - 1] + d[i]) / 4;
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if (n & 1)
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s[k * stride] = x[2 * k * stride] + d[k - 1] / 2;
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}
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static inline void
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inv_analyze_2 (TYPE * x, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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if (n & 1) {
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for (i = 0; i < k; i++)
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x[(2 * i + 1) * stride] =
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d[i] + (x[2 * i * stride] + x[(2 * i + 2) * stride]) / 2;
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} else {
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for (i = 0; i < k - 1; i++)
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x[(2 * i + 1) * stride] =
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d[i] + (x[2 * i * stride] + x[(2 * i + 2) * stride]) / 2;
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x[(n - 1) * stride] = d[k - 1] + x[(n - 2) * stride];
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}
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}
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static inline void
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inv_synthesize_2 (TYPE * x, const TYPE * s, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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x[0] = s[0] - d[1] / 2;
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for (i = 1; i < k; i++)
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x[2 * i * stride] = s[i] - (d[i - 1] + d[i]) / 4;
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if (n & 1)
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x[2 * k * stride] = s[k] - d[k - 1] / 2;
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}
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static void
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fwd_analyze_4 (const TYPE * x, TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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d[0] = x[stride] - (x[0] + x[2 * stride]) / 2;
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if (n & 1) {
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for (i = 1; i < k - 1; i++)
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d[i] = x[(2 * i + 1) * stride]
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- ((uint32_t) 9 * (x[2 * i * stride] + x[(2 * i + 2) * stride])
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- (x[(2 * i - 2) * stride] + x[(2 * i + 4) * stride])) / 16;
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if (k > 1)
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d[k - 1] =
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x[(2 * k - 1) * stride] - (x[(2 * k - 2) * stride] +
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x[2 * k * stride]) / 2;
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} else {
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for (i = 1; i < k - 2; i++)
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d[i] = x[(2 * i + 1) * stride]
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- ((uint32_t) 9 * (x[2 * i * stride] + x[(2 * i + 2) * stride])
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- (x[(2 * i - 2) * stride] + x[(2 * i + 4) * stride])) / 16;
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if (k > 2)
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d[k - 2] = x[(2 * k - 3) * stride] - (x[(2 * k - 4) * stride]
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+ x[(2 * k - 2) * stride]) / 2;
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if (k > 1)
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d[k - 1] = x[(n - 1) * stride] - x[(n - 2) * stride];
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}
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}
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static void
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fwd_synthesize_4 (const TYPE * x, TYPE * s, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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s[0] = x[0] + d[1] / 2;
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if (k > 1)
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s[stride] = x[2 * stride] + (d[0] + d[1]) / 4;
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for (i = 2; i < k - 1; i++)
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s[i * stride] = x[2 * i * stride]
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+ ((uint32_t) 9 * (d[i - 1] + d[i]) - (d[i - 2] + d[i + 1])) / 32;
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if (k > 2)
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s[(k - 1) * stride] = x[(2 * k - 2) * stride] + (d[k - 2] + d[k - 1]) / 4;
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if (n & 1)
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s[k * stride] = x[2 * k * stride] + d[k - 1] / 2;
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}
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static void
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inv_analyze_4 (TYPE * x, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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x[stride] = d[0] + (x[0] + x[2 * stride]) / 2;
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if (n & 1) {
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for (i = 1; i < k - 1; i++)
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x[(2 * i + 1) * stride] = d[i]
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+ ((uint32_t) 9 * (x[2 * i * stride] + x[(2 * i + 2) * stride])
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- (x[(2 * i - 2) * stride] + x[(2 * i + 4) * stride])) / 16;
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if (k > 1)
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x[(2 * k - 1) * stride] =
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d[k - 1] + (x[(2 * k - 2) * stride] + x[2 * k * stride]) / 2;
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} else {
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for (i = 1; i < k - 2; i++)
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x[(2 * i + 1) * stride] = d[i]
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+ (9 * (x[2 * i * stride] + x[(2 * i + 2) * stride])
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- (x[(2 * i - 2) * stride] + x[(2 * i + 4) * stride])) / 16;
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if (k > 2)
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x[(2 * k - 3) * stride] = d[k - 2] + (x[(2 * k - 4) * stride]
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+ x[(2 * k - 2) * stride]) / 2;
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if (k > 1)
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x[(n - 1) * stride] = d[k - 1] + x[(n - 2) * stride];
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}
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}
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static void
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inv_synthesize_4 (TYPE * x, const TYPE * s, const TYPE * d, int stride, int n)
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{
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int i, k = n / 2;
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x[0] = s[0] - d[1] / 2;
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if (k > 1)
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x[2 * stride] = s[1] - (d[0] + d[1]) / 4;
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for (i = 2; i < k - 1; i++)
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x[2 * i * stride] = s[i] - ((uint32_t) 9 * (d[i - 1] + d[i])
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- (d[i - 2] + d[i + 1])) / 32;
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if (k > 2)
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x[(2 * k - 2) * stride] = s[k - 1] - (d[k - 2] + d[k - 1]) / 4;
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if (n & 1)
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x[2 * k * stride] = s[k] - d[k - 1] / 2;
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}
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static inline void
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copyback_d (TYPE * x, const TYPE * d, int stride, int n)
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{
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int i, j, k = n / 2;
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for (i = n - k, j = 0; i < n; i++, j++)
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x[i * stride] = d[j];
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}
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static inline void
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copy_s_d (const TYPE * x, TYPE * s_d, int stride, int n)
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{
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int i;
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for (i = 0; i < n; i++)
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s_d[i] = x[i * stride];
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}
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typedef
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void (*FwdSFnc) (const TYPE * x, TYPE * s, const TYPE * d, int stride,
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int n);
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typedef void (*FwdAFnc) (const TYPE * x, TYPE * d, int stride, int n);
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typedef
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void (*InvSFnc) (TYPE * x, const TYPE * s, const TYPE * d, int stride,
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int n);
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typedef void (*InvAFnc) (TYPE * x, const TYPE * d, int stride, int n);
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static FwdSFnc fwd_synthesize[] = { NULL, fwd_synthesize_1, fwd_synthesize_2,
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NULL, fwd_synthesize_4
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};
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static FwdAFnc fwd_analyze[] = { NULL, fwd_analyze_1, fwd_analyze_2,
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NULL, fwd_analyze_4
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};
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static InvSFnc inv_synthesize[] = { NULL, inv_synthesize_1, inv_synthesize_2,
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NULL, inv_synthesize_4
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};
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static InvAFnc inv_analyze[] = { NULL, inv_analyze_1, inv_analyze_2,
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NULL, inv_analyze_4
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};
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static inline void
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fwd_xform (TYPE * scratchbuf, TYPE * data, int stride, int n,
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int a_moments, int s_moments)
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{
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TYPE *x = data;
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TYPE *d = scratchbuf;
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TYPE *s = data;
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assert (a_moments == 1 || a_moments == 2 || a_moments == 4);
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assert (s_moments == 1 || s_moments == 2 || s_moments == 4);
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/* XXX FIXME: Ugly hack to work around */
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/* the short-row bug in high */
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/* order xform functions */
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if (n < 9)
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a_moments = s_moments = 2;
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if (n < 5)
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a_moments = s_moments = 1;
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fwd_analyze[a_moments] (x, d, stride, n);
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fwd_synthesize[s_moments] (x, s, d, stride, n);
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copyback_d (x, d, stride, n);
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}
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static inline void
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inv_xform (TYPE * scratchbuf, TYPE * data, int stride, int n,
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int a_moments, int s_moments)
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{
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int k = n / 2;
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TYPE *x = data;
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TYPE *s = scratchbuf;
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TYPE *d = scratchbuf + n - k;
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assert (a_moments == 1 || a_moments == 2 || a_moments == 4);
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assert (s_moments == 1 || s_moments == 2 || s_moments == 4);
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/* XXX FIXME: Ugly hack to work around */
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/* the short-row bug in high */
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/* order xform functions */
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if (n < 9)
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a_moments = s_moments = 2;
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if (n < 5)
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a_moments = s_moments = 1;
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copy_s_d (data, scratchbuf, stride, n);
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inv_synthesize[s_moments] (x, s, d, stride, n);
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inv_analyze[a_moments] (x, d, stride, n);
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}
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void
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wavelet_3d_buf_fwd_xform (Wavelet3DBuf * buf, int a_moments, int s_moments)
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{
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int level;
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for (level = buf->scales - 1; level > 0; level--) {
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uint32_t w = buf->w[level];
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uint32_t h = buf->h[level];
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uint32_t f = buf->f[level];
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if (w > 1) {
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int row, frame;
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for (frame = 0; frame < f; frame++) {
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for (row = 0; row < h; row++) {
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TYPE *data = buf->data + (frame * buf->height + row) * buf->width;
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fwd_xform (buf->scratchbuf, data, 1, w, a_moments, s_moments);
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}
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}
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}
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if (h > 1) {
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int col, frame;
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for (frame = 0; frame < f; frame++) {
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for (col = 0; col < w; col++) {
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TYPE *data = buf->data + frame * buf->width * buf->height + col;
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fwd_xform (buf->scratchbuf, data, buf->width, h,
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a_moments, s_moments);
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}
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}
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}
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if (f > 1) {
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int i, j;
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for (j = 0; j < h; j++) {
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for (i = 0; i < w; i++) {
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TYPE *data = buf->data + j * buf->width + i;
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fwd_xform (buf->scratchbuf, data, buf->width * buf->height, f,
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a_moments, s_moments);
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}
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}
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}
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}
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}
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void
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wavelet_3d_buf_inv_xform (Wavelet3DBuf * buf, int a_moments, int s_moments)
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{
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int level;
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for (level = 1; level < buf->scales; level++) {
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uint32_t w = buf->w[level];
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uint32_t h = buf->h[level];
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uint32_t f = buf->f[level];
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if (f > 1) {
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int i, j;
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for (j = 0; j < h; j++) {
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for (i = 0; i < w; i++) {
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TYPE *data = buf->data + j * buf->width + i;
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inv_xform (buf->scratchbuf, data, buf->width * buf->height, f,
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a_moments, s_moments);
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}
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}
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}
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if (h > 1) {
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int col, frame;
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for (frame = 0; frame < f; frame++) {
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for (col = 0; col < w; col++) {
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TYPE *data = buf->data + frame * buf->width * buf->height + col;
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inv_xform (buf->scratchbuf, data, buf->width, h,
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a_moments, s_moments);
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}
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}
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}
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if (w > 1) {
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int row, frame;
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for (frame = 0; frame < f; frame++) {
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for (row = 0; row < h; row++) {
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TYPE *data = buf->data + (frame * buf->height + row) * buf->width;
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inv_xform (buf->scratchbuf, data, 1, w, a_moments, s_moments);
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}
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}
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}
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}
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}
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