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-rw-r--r--libs/surfaceflinger/Transform.cpp392
1 files changed, 0 insertions, 392 deletions
diff --git a/libs/surfaceflinger/Transform.cpp b/libs/surfaceflinger/Transform.cpp
deleted file mode 100644
index 175f989..0000000
--- a/libs/surfaceflinger/Transform.cpp
+++ /dev/null
@@ -1,392 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <math.h>
-
-#include <cutils/compiler.h>
-#include <utils/String8.h>
-#include <ui/Region.h>
-
-#include "Transform.h"
-
-// ---------------------------------------------------------------------------
-
-namespace android {
-
-// ---------------------------------------------------------------------------
-
-template <typename T> inline T min(T a, T b) {
- return a<b ? a : b;
-}
-template <typename T> inline T min(T a, T b, T c) {
- return min(a, min(b, c));
-}
-template <typename T> inline T min(T a, T b, T c, T d) {
- return min(a, b, min(c, d));
-}
-
-template <typename T> inline T max(T a, T b) {
- return a>b ? a : b;
-}
-template <typename T> inline T max(T a, T b, T c) {
- return max(a, max(b, c));
-}
-template <typename T> inline T max(T a, T b, T c, T d) {
- return max(a, b, max(c, d));
-}
-
-// ---------------------------------------------------------------------------
-
-Transform::Transform() {
- reset();
-}
-
-Transform::Transform(const Transform& other)
- : mMatrix(other.mMatrix), mType(other.mType) {
-}
-
-Transform::Transform(uint32_t orientation) {
- set(orientation, 0, 0);
-}
-
-Transform::~Transform() {
-}
-
-static const float EPSILON = 0.0f;
-
-bool Transform::isZero(float f) {
- return fabs(f) <= EPSILON;
-}
-
-bool Transform::absIsOne(float f) {
- return isZero(fabs(f) - 1.0f);
-}
-
-Transform Transform::operator * (const Transform& rhs) const
-{
- if (CC_LIKELY(mType == IDENTITY))
- return rhs;
-
- Transform r(*this);
- if (rhs.mType == IDENTITY)
- return r;
-
- // TODO: we could use mType to optimize the matrix multiply
- const mat33& A(mMatrix);
- const mat33& B(rhs.mMatrix);
- mat33& D(r.mMatrix);
- for (int i=0 ; i<3 ; i++) {
- const float v0 = A[0][i];
- const float v1 = A[1][i];
- const float v2 = A[2][i];
- D[0][i] = v0*B[0][0] + v1*B[0][1] + v2*B[0][2];
- D[1][i] = v0*B[1][0] + v1*B[1][1] + v2*B[1][2];
- D[2][i] = v0*B[2][0] + v1*B[2][1] + v2*B[2][2];
- }
- r.mType |= rhs.mType;
-
- // TODO: we could recompute this value from r and rhs
- r.mType &= 0xFF;
- r.mType |= UNKNOWN_TYPE;
- return r;
-}
-
-float const* Transform::operator [] (int i) const {
- return mMatrix[i].v;
-}
-
-bool Transform::transformed() const {
- return type() > TRANSLATE;
-}
-
-int Transform::tx() const {
- return floorf(mMatrix[2][0] + 0.5f);
-}
-
-int Transform::ty() const {
- return floorf(mMatrix[2][1] + 0.5f);
-}
-
-void Transform::reset() {
- mType = IDENTITY;
- for(int i=0 ; i<3 ; i++) {
- vec3& v(mMatrix[i]);
- for (int j=0 ; j<3 ; j++)
- v[j] = ((i==j) ? 1.0f : 0.0f);
- }
-}
-
-void Transform::set(float tx, float ty)
-{
- mMatrix[2][0] = tx;
- mMatrix[2][1] = ty;
- mMatrix[2][2] = 1.0f;
-
- if (isZero(tx) && isZero(ty)) {
- mType &= ~TRANSLATE;
- } else {
- mType |= TRANSLATE;
- }
-}
-
-void Transform::set(float a, float b, float c, float d)
-{
- mat33& M(mMatrix);
- M[0][0] = a; M[1][0] = b;
- M[0][1] = c; M[1][1] = d;
- M[0][2] = 0; M[1][2] = 0;
- mType = UNKNOWN_TYPE;
-}
-
-status_t Transform::set(uint32_t flags, float w, float h)
-{
- if (flags & ROT_INVALID) {
- // that's not allowed!
- reset();
- return BAD_VALUE;
- }
-
- mType = flags << 8;
- float sx = (flags & FLIP_H) ? -1 : 1;
- float sy = (flags & FLIP_V) ? -1 : 1;
- float a=0, b=0, c=0, d=0, x=0, y=0;
- int xmask = 0;
-
- // computation of x,y
- // x y
- // 0 0 0
- // w 0 ROT90
- // w h FLIPH|FLIPV
- // 0 h FLIPH|FLIPV|ROT90
-
- if (flags & ROT_90) {
- mType |= ROTATE;
- b = -sy;
- c = sx;
- xmask = 1;
- } else {
- a = sx;
- d = sy;
- }
-
- if (flags & FLIP_H) {
- mType ^= SCALE;
- xmask ^= 1;
- }
-
- if (flags & FLIP_V) {
- mType ^= SCALE;
- y = h;
- }
-
- if ((flags & ROT_180) == ROT_180) {
- mType |= ROTATE;
- }
-
- if (xmask) {
- x = w;
- }
-
- if (!isZero(x) || !isZero(y)) {
- mType |= TRANSLATE;
- }
-
- mat33& M(mMatrix);
- M[0][0] = a; M[1][0] = b; M[2][0] = x;
- M[0][1] = c; M[1][1] = d; M[2][1] = y;
- M[0][2] = 0; M[1][2] = 0; M[2][2] = 1;
-
- return NO_ERROR;
-}
-
-Transform::vec2 Transform::transform(const vec2& v) const {
- vec2 r;
- const mat33& M(mMatrix);
- r[0] = M[0][0]*v[0] + M[1][0]*v[1] + M[2][0];
- r[1] = M[0][1]*v[0] + M[1][1]*v[1] + M[2][1];
- return r;
-}
-
-Transform::vec3 Transform::transform(const vec3& v) const {
- vec3 r;
- const mat33& M(mMatrix);
- r[0] = M[0][0]*v[0] + M[1][0]*v[1] + M[2][0]*v[2];
- r[1] = M[0][1]*v[0] + M[1][1]*v[1] + M[2][1]*v[2];
- r[2] = M[0][2]*v[0] + M[1][2]*v[1] + M[2][2]*v[2];
- return r;
-}
-
-void Transform::transform(fixed1616* point, int x, int y) const
-{
- const float toFixed = 65536.0f;
- const mat33& M(mMatrix);
- vec2 v(x, y);
- v = transform(v);
- point[0] = v[0] * toFixed;
- point[1] = v[1] * toFixed;
-}
-
-Rect Transform::makeBounds(int w, int h) const
-{
- return transform( Rect(w, h) );
-}
-
-Rect Transform::transform(const Rect& bounds) const
-{
- Rect r;
- vec2 lt( bounds.left, bounds.top );
- vec2 rt( bounds.right, bounds.top );
- vec2 lb( bounds.left, bounds.bottom );
- vec2 rb( bounds.right, bounds.bottom );
-
- lt = transform(lt);
- rt = transform(rt);
- lb = transform(lb);
- rb = transform(rb);
-
- r.left = floorf(min(lt[0], rt[0], lb[0], rb[0]) + 0.5f);
- r.top = floorf(min(lt[1], rt[1], lb[1], rb[1]) + 0.5f);
- r.right = floorf(max(lt[0], rt[0], lb[0], rb[0]) + 0.5f);
- r.bottom = floorf(max(lt[1], rt[1], lb[1], rb[1]) + 0.5f);
-
- return r;
-}
-
-Region Transform::transform(const Region& reg) const
-{
- Region out;
- if (CC_UNLIKELY(transformed())) {
- if (CC_LIKELY(preserveRects())) {
- Region::const_iterator it = reg.begin();
- Region::const_iterator const end = reg.end();
- while (it != end) {
- out.orSelf(transform(*it++));
- }
- } else {
- out.set(transform(reg.bounds()));
- }
- } else {
- out = reg.translate(tx(), ty());
- }
- return out;
-}
-
-uint32_t Transform::type() const
-{
- if (mType & UNKNOWN_TYPE) {
- // recompute what this transform is
-
- const mat33& M(mMatrix);
- const float a = M[0][0];
- const float b = M[1][0];
- const float c = M[0][1];
- const float d = M[1][1];
- const float x = M[2][0];
- const float y = M[2][1];
-
- bool scale = false;
- uint32_t flags = ROT_0;
- if (isZero(b) && isZero(c)) {
- if (a<0) flags |= FLIP_H;
- if (d<0) flags |= FLIP_V;
- if (!absIsOne(a) || !absIsOne(d)) {
- scale = true;
- }
- } else if (isZero(a) && isZero(d)) {
- flags |= ROT_90;
- if (b>0) flags |= FLIP_H;
- if (c<0) flags |= FLIP_V;
- if (!absIsOne(b) || !absIsOne(c)) {
- scale = true;
- }
- } else {
- flags = ROT_INVALID;
- }
-
- mType = flags << 8;
- if (flags & ROT_INVALID) {
- mType |= UNKNOWN;
- } else {
- if ((flags & ROT_90) || ((flags & ROT_180) == ROT_180))
- mType |= ROTATE;
- if (flags & FLIP_H)
- mType ^= SCALE;
- if (flags & FLIP_V)
- mType ^= SCALE;
- if (scale)
- mType |= SCALE;
- }
-
- if (!isZero(x) || !isZero(y))
- mType |= TRANSLATE;
- }
- return mType;
-}
-
-uint32_t Transform::getType() const {
- return type() & 0xFF;
-}
-
-uint32_t Transform::getOrientation() const
-{
- return (type() >> 8) & 0xFF;
-}
-
-bool Transform::preserveRects() const
-{
- return (type() & ROT_INVALID) ? false : true;
-}
-
-void Transform::dump(const char* name) const
-{
- type(); // updates the type
-
- String8 flags, type;
- const mat33& m(mMatrix);
- uint32_t orient = mType >> 8;
-
- if (orient&ROT_INVALID) {
- flags.append("ROT_INVALID ");
- } else {
- if (orient&ROT_90) {
- flags.append("ROT_90 ");
- } else {
- flags.append("ROT_0 ");
- }
- if (orient&FLIP_V)
- flags.append("FLIP_V ");
- if (orient&FLIP_H)
- flags.append("FLIP_H ");
- }
-
- if (!(mType&(SCALE|ROTATE|TRANSLATE)))
- type.append("IDENTITY ");
- if (mType&SCALE)
- type.append("SCALE ");
- if (mType&ROTATE)
- type.append("ROTATE ");
- if (mType&TRANSLATE)
- type.append("TRANSLATE ");
-
- LOGD("%s 0x%08x (%s, %s)", name, mType, flags.string(), type.string());
- LOGD("%.4f %.4f %.4f", m[0][0], m[1][0], m[2][0]);
- LOGD("%.4f %.4f %.4f", m[0][1], m[1][1], m[2][1]);
- LOGD("%.4f %.4f %.4f", m[0][2], m[1][2], m[2][2]);
-}
-
-// ---------------------------------------------------------------------------
-
-}; // namespace android
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