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Diffstat (limited to 'libopenjpeg/mct.c')
| -rw-r--r-- | libopenjpeg/mct.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/libopenjpeg/mct.c b/libopenjpeg/mct.c deleted file mode 100644 index ef371e92..00000000 --- a/libopenjpeg/mct.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - * Copyright (c) 2001-2002, David Janssens - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "mct.h" -#include "fix.h" - -/* <summary> */ -/* This table contains the norms of the basis function of the reversible MCT. */ -/* </summary> */ -double mct_norms[3] = { 1.732, .8292, .8292 }; - -/* <summary> */ -/* This table contains the norms of the basis function of the irreversible MCT. */ -/* </summary> */ -double mct_norms_real[3] = { 1.732, 1.805, 1.573 }; - -/* <summary> */ -/* Foward reversible MCT. */ -/* </summary> */ -void mct_encode(int *c0, int *c1, int *c2, int n) -{ - int i; - for (i = 0; i < n; i++) { - int r, g, b, y, u, v; - r = c0[i]; - g = c1[i]; - b = c2[i]; - y = (r + (g << 1) + b) >> 2; - u = b - g; - v = r - g; - c0[i] = y; - c1[i] = u; - c2[i] = v; - } -} - -/* <summary> */ -/* Inverse reversible MCT. */ -/* </summary> */ -void mct_decode(int *c0, int *c1, int *c2, int n) -{ - int i; - for (i = 0; i < n; i++) { - int y, u, v, r, g, b; - y = c0[i]; - u = c1[i]; - v = c2[i]; - g = y - ((u + v) >> 2); - r = v + g; - b = u + g; - c0[i] = r; - c1[i] = g; - c2[i] = b; - } -} - -/* <summary> */ -/* Get norm of basis function of reversible MCT. */ -/* </summary> */ -double mct_getnorm(int compno) -{ - return mct_norms[compno]; -} - -/* <summary> */ -/* Foward irreversible MCT. */ -/* </summary> */ -void mct_encode_real(int *c0, int *c1, int *c2, int n) -{ - int i; - for (i = 0; i < n; i++) { - int r, g, b, y, u, v; - r = c0[i]; - g = c1[i]; - b = c2[i]; - y = fix_mul(r, 2449) + fix_mul(g, 4809) + fix_mul(b, 934); - u = -fix_mul(r, 1382) - fix_mul(g, 2714) + fix_mul(b, 4096); - v = fix_mul(r, 4096) - fix_mul(g, 3430) - fix_mul(b, 666); - c0[i] = y; - c1[i] = u; - c2[i] = v; - } -} - -/* <summary> */ -/* Inverse irreversible MCT. */ -/* </summary> */ -void mct_decode_real(int *c0, int *c1, int *c2, int n) -{ - int i; - for (i = 0; i < n; i++) { - int y, u, v, r, g, b; - y = c0[i]; - u = c1[i]; - v = c2[i]; - r = y + fix_mul(v, 11485); - g = y - fix_mul(u, 2819) - fix_mul(v, 5850); - b = y + fix_mul(u, 14516); - c0[i] = r; - c1[i] = g; - c2[i] = b; - } -} - -/* <summary> */ -/* Get norm of basis function of irreversible MCT. */ -/* </summary> */ -double mct_getnorm_real(int compno) -{ - return mct_norms_real[compno]; -} |