auto import from //branches/cupcake/...@125939

1 files changed, 159 insertions, 0 deletions

diff --git a/src/animator/SkOperandIterpolator.cpp b/src/animator/SkOperandIterpolator.cpp
new file mode 100644
index 0000000..2bddd34
--- /dev/null
+++ b/src/animator/SkOperandIterpolator.cpp
@@ -0,0 +1,159 @@
+/* libs/graphics/animator/SkOperandIterpolator.cpp
+**
+** Copyright 2006, 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 "SkOperandInterpolator.h"
+#include "SkScript.h"
+
+SkOperandInterpolator::SkOperandInterpolator() {
+    INHERITED::reset(0, 0);
+    fType = SkType_Unknown;
+}
+
+SkOperandInterpolator::SkOperandInterpolator(int elemCount, int frameCount, 
+                                             SkDisplayTypes type)
+{
+    this->reset(elemCount, frameCount, type);
+}
+
+void SkOperandInterpolator::reset(int elemCount, int frameCount, SkDisplayTypes type)
+{
+//  SkASSERT(type == SkType_String || type == SkType_Float || type == SkType_Int ||
+//      type == SkType_Displayable || type == SkType_Drawable);
+    INHERITED::reset(elemCount, frameCount);
+    fType = type;
+    fStorage = sk_malloc_throw((sizeof(SkOperand) * elemCount + sizeof(SkTimeCode)) * frameCount);
+    fTimes = (SkTimeCode*) fStorage;
+    fValues = (SkOperand*) ((char*) fStorage + sizeof(SkTimeCode) * frameCount);
+#ifdef SK_DEBUG
+    fTimesArray = (SkTimeCode(*)[10]) fTimes;
+    fValuesArray = (SkOperand(*)[10]) fValues;
+#endif
+}
+
+bool SkOperandInterpolator::setKeyFrame(int index, SkMSec time, const SkOperand values[], SkScalar blend)
+{
+    SkASSERT(values != NULL);
+    blend = SkScalarPin(blend, 0, SK_Scalar1);
+
+    bool success = ~index == SkTSearch<SkMSec>(&fTimes->fTime, index, time, sizeof(SkTimeCode));
+    SkASSERT(success);
+    if (success) {
+        SkTimeCode* timeCode = &fTimes[index];
+        timeCode->fTime = time;
+        timeCode->fBlend[0] = SK_Scalar1 - blend;
+        timeCode->fBlend[1] = 0;
+        timeCode->fBlend[2] = 0;
+        timeCode->fBlend[3] = SK_Scalar1 - blend;
+        SkOperand* dst = &fValues[fElemCount * index];
+        memcpy(dst, values, fElemCount * sizeof(SkOperand));
+    }
+    return success;
+}
+
+SkInterpolatorBase::Result SkOperandInterpolator::timeToValues(SkMSec time, SkOperand values[]) const
+{
+    SkScalar T;
+    int index;
+    SkBool exact;
+    Result result = timeToT(time, &T, &index, &exact);
+    if (values)
+    {
+        const SkOperand* nextSrc = &fValues[index * fElemCount];
+
+        if (exact)
+            memcpy(values, nextSrc, fElemCount * sizeof(SkScalar));
+        else
+        {
+            SkASSERT(index > 0);
+
+            const SkOperand* prevSrc = nextSrc - fElemCount;
+
+            if (fType == SkType_Float || fType == SkType_3D_Point) {
+                for (int i = fElemCount - 1; i >= 0; --i)
+                    values[i].fScalar = SkScalarInterp(prevSrc[i].fScalar, nextSrc[i].fScalar, T);
+            } else if (fType == SkType_Int || fType == SkType_MSec) {
+                for (int i = fElemCount - 1; i >= 0; --i) {
+                    int32_t a = prevSrc[i].fS32;
+                    int32_t b = nextSrc[i].fS32;
+                    values[i].fS32 = a + SkScalarRound((b - a) * T);
+                }
+            } else
+                memcpy(values, prevSrc, sizeof(SkOperand) * fElemCount);
+        }
+    }
+    return result;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////////////
+
+#ifdef SK_DEBUG
+
+#ifdef SK_SUPPORT_UNITTEST
+    static SkOperand* iset(SkOperand array[3], int a, int b, int c)
+    {
+        array[0].fScalar = SkIntToScalar(a);
+        array[1].fScalar = SkIntToScalar(b);
+        array[2].fScalar = SkIntToScalar(c);
+        return array;
+    }
+#endif
+
+void SkOperandInterpolator::UnitTest()
+{
+#ifdef SK_SUPPORT_UNITTEST
+    SkOperandInterpolator   inter(3, 2, SkType_Float);
+    SkOperand       v1[3], v2[3], v[3], vv[3];
+    Result          result;
+
+    inter.setKeyFrame(0, 100, iset(v1, 10, 20, 30), 0);
+    inter.setKeyFrame(1, 200, iset(v2, 110, 220, 330));
+
+    result = inter.timeToValues(0, v);
+    SkASSERT(result == kFreezeStart_Result);
+    SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
+
+    result = inter.timeToValues(99, v);
+    SkASSERT(result == kFreezeStart_Result);
+    SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
+
+    result = inter.timeToValues(100, v);
+    SkASSERT(result == kNormal_Result);
+    SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
+
+    result = inter.timeToValues(200, v);
+    SkASSERT(result == kNormal_Result);
+    SkASSERT(memcmp(v, v2, sizeof(v)) == 0);
+
+    result = inter.timeToValues(201, v);
+    SkASSERT(result == kFreezeEnd_Result);
+    SkASSERT(memcmp(v, v2, sizeof(v)) == 0);
+
+    result = inter.timeToValues(150, v);
+    SkASSERT(result == kNormal_Result);
+    SkASSERT(memcmp(v, iset(vv, 60, 120, 180), sizeof(v)) == 0);
+
+    result = inter.timeToValues(125, v);
+    SkASSERT(result == kNormal_Result);
+    result = inter.timeToValues(175, v);
+    SkASSERT(result == kNormal_Result);
+#endif
+}
+
+#endif
+
+