Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(931)

Issues Search
    My Issues | Starred     Open | Closed | All

Unified Diff: skia/effects/SkColorMatrixFilter.cpp

Issue 113827: Remove the remainder of the skia source code from the Chromium repo.... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: Created 11 years, 7 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « skia/effects/SkColorMatrix.cpp ('k') | skia/effects/SkCornerPathEffect.cpp » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: skia/effects/SkColorMatrixFilter.cpp
===================================================================
--- skia/effects/SkColorMatrixFilter.cpp (revision 16859)
+++ skia/effects/SkColorMatrixFilter.cpp (working copy)
@@ -1,330 +0,0 @@
-#include "SkColorMatrixFilter.h"
-#include "SkColorMatrix.h"
-#include "SkColorPriv.h"
-#include "SkUnPreMultiply.h"
-
-static int32_t rowmul4(const int32_t array[], unsigned r, unsigned g,
- unsigned b, unsigned a) {
- return array[0] * r + array[1] * g + array[2] * b + array[3] * a + array[4];
-}
-
-static int32_t rowmul3(const int32_t array[], unsigned r, unsigned g,
- unsigned b) {
- return array[0] * r + array[1] * g + array[2] * b + array[4];
-}
-
-static void General(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- const int shift = state->fShift;
- int32_t* SK_RESTRICT result = state->fResult;
-
- result[0] = rowmul4(&array[0], r, g, b, a) >> shift;
- result[1] = rowmul4(&array[5], r, g, b, a) >> shift;
- result[2] = rowmul4(&array[10], r, g, b, a) >> shift;
- result[3] = rowmul4(&array[15], r, g, b, a) >> shift;
-}
-
-static void General16(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- int32_t* SK_RESTRICT result = state->fResult;
-
- result[0] = rowmul4(&array[0], r, g, b, a) >> 16;
- result[1] = rowmul4(&array[5], r, g, b, a) >> 16;
- result[2] = rowmul4(&array[10], r, g, b, a) >> 16;
- result[3] = rowmul4(&array[15], r, g, b, a) >> 16;
-}
-
-static void AffineAdd(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- const int shift = state->fShift;
- int32_t* SK_RESTRICT result = state->fResult;
-
- result[0] = rowmul3(&array[0], r, g, b) >> shift;
- result[1] = rowmul3(&array[5], r, g, b) >> shift;
- result[2] = rowmul3(&array[10], r, g, b) >> shift;
- result[3] = a;
-}
-
-static void AffineAdd16(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- int32_t* SK_RESTRICT result = state->fResult;
-
- result[0] = rowmul3(&array[0], r, g, b) >> 16;
- result[1] = rowmul3(&array[5], r, g, b) >> 16;
- result[2] = rowmul3(&array[10], r, g, b) >> 16;
- result[3] = a;
-}
-
-static void ScaleAdd(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- const int shift = state->fShift;
- int32_t* SK_RESTRICT result = state->fResult;
-
- // cast to (int) to keep the expression signed for the shift
- result[0] = (array[0] * (int)r + array[4]) >> shift;
- result[1] = (array[6] * (int)g + array[9]) >> shift;
- result[2] = (array[12] * (int)b + array[14]) >> shift;
- result[3] = a;
-}
-
-static void ScaleAdd16(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- int32_t* SK_RESTRICT result = state->fResult;
-
- // cast to (int) to keep the expression signed for the shift
- result[0] = (array[0] * (int)r + array[4]) >> 16;
- result[1] = (array[6] * (int)g + array[9]) >> 16;
- result[2] = (array[12] * (int)b + array[14]) >> 16;
- result[3] = a;
-}
-
-static void Add(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- const int shift = state->fShift;
- int32_t* SK_RESTRICT result = state->fResult;
-
- result[0] = r + (array[4] >> shift);
- result[1] = g + (array[9] >> shift);
- result[2] = b + (array[14] >> shift);
- result[3] = a;
-}
-
-static void Add16(SkColorMatrixFilter::State* state,
- unsigned r, unsigned g, unsigned b, unsigned a) {
- const int32_t* SK_RESTRICT array = state->fArray;
- int32_t* SK_RESTRICT result = state->fResult;
-
- result[0] = r + (array[4] >> 16);
- result[1] = g + (array[9] >> 16);
- result[2] = b + (array[14] >> 16);
- result[3] = a;
-}
-
-#define kNO_ALPHA_FLAGS (SkColorFilter::kAlphaUnchanged_Flag | \
- SkColorFilter::kHasFilter16_Flag)
-
-void SkColorMatrixFilter::setup(const SkScalar SK_RESTRICT src[20]) {
- if (NULL == src) {
- fProc = NULL; // signals identity
- fFlags = kNO_ALPHA_FLAGS;
- // fState is undefined, but that is OK, since we shouldn't look at it
- return;
- }
-
- int32_t* SK_RESTRICT array = fState.fArray;
-
- int i;
- SkFixed max = 0;
-
- for (int i = 0; i < 20; i++) {
- SkFixed value = SkScalarToFixed(src[i]);
- array[i] = value;
- value = SkAbs32(value);
- max = SkMax32(max, value);
- }
-
- /* All of fArray[] values must fit in 23 bits, to safely allow me to
- multiply them by 8bit unsigned values, and get a signed answer without
- overflow. This means clz needs to be 9 or bigger
- */
- int bits = SkCLZ(max);
- int32_t one = SK_Fixed1;
-
- fState.fShift = 16; // we are starting out as fixed 16.16
- if (bits < 9) {
- bits = 9 - bits;
- fState.fShift -= bits;
- for (i = 0; i < 20; i++) {
- array[i] >>= bits;
- }
- one >>= bits;
- }
-
- // check if we have to munge Alpha
- int32_t changesAlpha = (array[15] | array[16] | array[17] |
- (array[18] - one) | array[19]);
- int32_t usesAlpha = (array[3] | array[8] | array[13]);
- bool shiftIs16 = (16 == fState.fShift);
-
- if (changesAlpha | usesAlpha) {
- fProc = shiftIs16 ? General16 : General;
- fFlags = changesAlpha ? 0 : SkColorFilter::kAlphaUnchanged_Flag;
- } else {
- fFlags = kNO_ALPHA_FLAGS;
-
- int32_t needsScale = (array[0] - one) | // red axis
- (array[6] - one) | // green axis
- (array[12] - one); // blue axis
-
- int32_t needs3x3 = array[1] | array[2] | // red off-axis
- array[5] | array[7] | // green off-axis
- array[10] | array[11]; // blue off-axis
-
- if (needs3x3) {
- fProc = shiftIs16 ? AffineAdd16 : AffineAdd;
- } else if (needsScale) {
- fProc = shiftIs16 ? ScaleAdd16 : ScaleAdd;
- } else if (array[4] | array[9] | array[14]) { // needs add
- fProc = shiftIs16 ? Add16 : Add;
- } else {
- fProc = NULL; // identity
- }
- }
-
- /* preround our add values so we get a rounded shift. We do this after we
- analyze the array, so we don't miss the case where the caller has zeros
- which could make us accidentally take the General or Add case.
- */
- if (NULL != fProc) {
- int32_t add = 1 << (fState.fShift - 1);
- array[4] += add;
- array[9] += add;
- array[14] += add;
- array[19] += add;
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-static int32_t pin(int32_t value, int32_t max) {
- if (value < 0) {
- value = 0;
- }
- if (value > max) {
- value = max;
- }
- return value;
-}
-
-SkColorMatrixFilter::SkColorMatrixFilter() {
- this->setup(NULL);
-}
-
-SkColorMatrixFilter::SkColorMatrixFilter(const SkColorMatrix& cm) {
- this->setup(cm.fMat);
-}
-
-SkColorMatrixFilter::SkColorMatrixFilter(const SkScalar array[20]) {
- this->setup(array);
-}
-
-uint32_t SkColorMatrixFilter::getFlags() {
- return this->INHERITED::getFlags() | fFlags;
-}
-
-void SkColorMatrixFilter::filterSpan(const SkPMColor src[], int count,
- SkPMColor dst[]) {
- Proc proc = fProc;
- State* state = &fState;
- int32_t* SK_RESTRICT result = state->fResult;
-
- if (NULL == proc) {
- if (src != dst) {
- memcpy(dst, src, count * sizeof(SkPMColor));
- }
- return;
- }
-
- const SkUnPreMultiply::Scale* table = SkUnPreMultiply::GetScaleTable();
-
- for (int i = 0; i < count; i++) {
- SkPMColor c = src[i];
-
- unsigned r = SkGetPackedR32(c);
- unsigned g = SkGetPackedG32(c);
- unsigned b = SkGetPackedB32(c);
- unsigned a = SkGetPackedA32(c);
-
- // need our components to be un-premultiplied
- if (255 != a) {
- SkUnPreMultiply::Scale scale = table[a];
- r = SkUnPreMultiply::ApplyScale(scale, r);
- g = SkUnPreMultiply::ApplyScale(scale, g);
- b = SkUnPreMultiply::ApplyScale(scale, b);
-
- SkASSERT(r <= 255);
- SkASSERT(g <= 255);
- SkASSERT(b <= 255);
- }
-
- proc(state, r, g, b, a);
-
- r = pin(result[0], SK_R32_MASK);
- g = pin(result[1], SK_G32_MASK);
- b = pin(result[2], SK_B32_MASK);
- a = pin(result[3], SK_A32_MASK);
- // re-prepremultiply if needed
- if (255 != a) {
- int scale = SkAlpha255To256(a);
- r = SkAlphaMul(r, scale);
- g = SkAlphaMul(g, scale);
- b = SkAlphaMul(b, scale);
- }
- dst[i] = SkPackARGB32(a, r, g, b);
- }
-}
-
-void SkColorMatrixFilter::filterSpan16(const uint16_t src[], int count,
- uint16_t dst[]) {
- SkASSERT(fFlags & SkColorFilter::kHasFilter16_Flag);
-
- Proc proc = fProc;
- State* state = &fState;
- int32_t* SK_RESTRICT result = state->fResult;
-
- if (NULL == proc) {
- if (src != dst) {
- memcpy(dst, src, count * sizeof(uint16_t));
- }
- return;
- }
-
- for (int i = 0; i < count; i++) {
- uint16_t c = src[i];
-
- // expand to 8bit components (since our matrix translate is 8bit biased
- unsigned r = SkPacked16ToR32(c);
- unsigned g = SkPacked16ToG32(c);
- unsigned b = SkPacked16ToB32(c);
-
- proc(state, r, g, b, 0);
-
- r = pin(result[0], SK_R32_MASK);
- g = pin(result[1], SK_G32_MASK);
- b = pin(result[2], SK_B32_MASK);
-
- // now packed it back down to 16bits (hmmm, could dither...)
- dst[i] = SkPack888ToRGB16(r, g, b);
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-void SkColorMatrixFilter::flatten(SkFlattenableWriteBuffer& buffer) {
- this->INHERITED::flatten(buffer);
-
- buffer.writeFunctionPtr((void*)fProc);
- buffer.writeMul4(&fState, sizeof(fState));
- buffer.write32(fFlags);
-}
-
-SkFlattenable::Factory SkColorMatrixFilter::getFactory() { return CreateProc; }
-
-SkColorMatrixFilter::SkColorMatrixFilter(SkFlattenableReadBuffer& buffer)
- : INHERITED(buffer) {
- fProc = (Proc)buffer.readFunctionPtr();
- buffer.read(&fState, sizeof(fState));
- fFlags = buffer.readU32();
-}
-
-SkFlattenable* SkColorMatrixFilter::CreateProc(SkFlattenableReadBuffer& buf) {
- return SkNEW_ARGS(SkColorMatrixFilter, (buf));
-}
-
« no previous file with comments | « skia/effects/SkColorMatrix.cpp ('k') | skia/effects/SkCornerPathEffect.cpp » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698