Revert of remvoe duplicate impl for SkImageInfo flattening

src/core/SkMallocPixelRef.cpp

Index: src/core/SkMallocPixelRef.cpp
diff --git a/src/core/SkMallocPixelRef.cpp b/src/core/SkMallocPixelRef.cpp
index 613491a3aabc9079a2d599b715206871f83cc153..f229e9de34d0fa8dbdd29304dd0ac0f7a78e5611 100644
--- a/src/core/SkMallocPixelRef.cpp
+++ b/src/core/SkMallocPixelRef.cpp
@@ -1,105 +1,27 @@
+
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
-
 #include "SkMallocPixelRef.h"
 #include "SkBitmap.h"
 #include "SkFlattenableBuffers.h"
 
-static bool check_info(const SkImageInfo& info, SkColorTable* ctable) {
-    if (info.fWidth < 0 ||
-        info.fHeight < 0 ||
-        (unsigned)info.fColorType > (unsigned)kLastEnum_SkColorType ||
-        (unsigned)info.fAlphaType > (unsigned)kLastEnum_SkAlphaType)
-    {
-        return false;
+SkMallocPixelRef::SkMallocPixelRef(void* storage, size_t size,
+                                   SkColorTable* ctable, bool ownPixels) {
+    if (NULL == storage) {
+        SkASSERT(ownPixels);
+        storage = sk_malloc_throw(size);
     }
-    
-    // these seem like good checks, but currently we have (at least) tests
-    // that expect the pixelref to succeed even when there is a mismatch
-    // with colortables. fix?
-#if 0
-    if (kIndex8_SkColorType == info.fColorType && NULL == ctable) {
-        return false;
-    }
-    if (kIndex8_SkColorType != info.fColorType && NULL != ctable) {
-        return false;
-    }
-#endif
-    return true;
-}
+    fStorage = storage;
+    fSize = size;
+    fCTable = ctable;
+    SkSafeRef(ctable);
+    fOwnPixels = ownPixels;
 
-SkMallocPixelRef* SkMallocPixelRef::NewDirect(const SkImageInfo& info,
-                                              void* addr,
-                                              size_t rowBytes,
-                                              SkColorTable* ctable) {
-    if (!check_info(info, ctable)) {
-        return NULL;
-    }
-    return SkNEW_ARGS(SkMallocPixelRef, (info, addr, rowBytes, ctable, false));
-}
-
-SkMallocPixelRef* SkMallocPixelRef::NewAllocate(const SkImageInfo& info,
-                                                size_t requestedRowBytes,
-                                                SkColorTable* ctable) {
-    if (!check_info(info, ctable)) {
-        return NULL;
-    }
-
-    int32_t minRB = info.minRowBytes();
-    if (minRB < 0) {
-        return NULL;    // allocation will be too large
-    }
-    if (requestedRowBytes > 0 && (int32_t)requestedRowBytes < minRB) {
-        return NULL;    // cannot meet requested rowbytes
-    }
-
-    int32_t rowBytes;
-    if (requestedRowBytes) {
-        rowBytes = requestedRowBytes;
-    } else {
-        rowBytes = minRB;
-    }
-
-    Sk64 bigSize;
-    bigSize.setMul(info.fHeight, rowBytes);
-    if (!bigSize.is32()) {
-        return NULL;
-    }
-
-    size_t size = bigSize.get32();
-    void* addr = sk_malloc_flags(size, 0);
-    if (NULL == addr) {
-        return NULL;
-    }
-
-    return SkNEW_ARGS(SkMallocPixelRef, (info, addr, rowBytes, ctable, true));
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage,
-                                   size_t rowBytes, SkColorTable* ctable,
-                                   bool ownsPixels)
-    : SkPixelRef(info)
-    , fOwnPixels(ownsPixels)
-{
-    SkASSERT(check_info(info, ctable));
-    SkASSERT(rowBytes >= info.minRowBytes());
-
-    if (kIndex_8_SkColorType != info.fColorType) {
-        ctable = NULL;
-    }
-
-    fStorage = storage;
-    fCTable = ctable;
-    fRB = rowBytes;
-    SkSafeRef(ctable);
-    
-    this->setPreLocked(fStorage, fRB, fCTable);
+    this->setPreLocked(fStorage, fCTable);
 }
 
 SkMallocPixelRef::~SkMallocPixelRef() {
@@ -109,30 +31,19 @@
     }
 }
 
-bool SkMallocPixelRef::onNewLockPixels(LockRec* rec) {
-    rec->fPixels = fStorage;
-    rec->fRowBytes = fRB;
-    rec->fColorTable = fCTable;
-    return true;
+void* SkMallocPixelRef::onLockPixels(SkColorTable** ct) {
+    *ct = fCTable;
+    return fStorage;
 }
 
 void SkMallocPixelRef::onUnlockPixels() {
     // nothing to do
 }
 
-size_t SkMallocPixelRef::getAllocatedSizeInBytes() const {
-    return this->info().getSafeSize(fRB);
-}
-
 void SkMallocPixelRef::flatten(SkFlattenableWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
 
-    buffer.write32(fRB);
-
-    // TODO: replace this bulk write with a chunky one that can trim off any
-    // trailing bytes on each scanline (in case rowbytes > width*size)
-    size_t size = this->info().getSafeSize(fRB);
-    buffer.writeByteArray(fStorage, size);
+    buffer.writeByteArray(fStorage, fSize);
     buffer.writeBool(fCTable != NULL);
     if (fCTable) {
         fCTable->writeToBuffer(buffer);
@@ -140,18 +51,16 @@
 }
 
 SkMallocPixelRef::SkMallocPixelRef(SkFlattenableReadBuffer& buffer)
-    : INHERITED(buffer, NULL)
-    , fOwnPixels(true)
-{
-    fRB = buffer.read32();
-    size_t size = this->info().getSafeSize(fRB);
-    fStorage = sk_malloc_throw(size);
-    buffer.readByteArray(fStorage, size);
+        : INHERITED(buffer, NULL) {
+    fSize = buffer.getArrayCount();
+    fStorage = sk_malloc_throw(fSize);
+    buffer.readByteArray(fStorage, fSize);
     if (buffer.readBool()) {
         fCTable = SkNEW_ARGS(SkColorTable, (buffer));
     } else {
         fCTable = NULL;
     }
+    fOwnPixels = true;
 
-    this->setPreLocked(fStorage, fRB, fCTable);
+    this->setPreLocked(fStorage, fCTable);
 }