Rename SkBitmapRegionDecoder and Create function

tools/SkBitmapRegionDecoderInterface.cpp

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkBitmapRegionCanvas.h"
-#include "SkBitmapRegionCodec.h"
-#include "SkBitmapRegionDecoderInterface.h"
-#include "SkBitmapRegionSampler.h"
-#include "SkAndroidCodec.h"
-#include "SkCodec.h"
-#include "SkCodecPriv.h"
-#include "SkImageDecoder.h"
-
-SkBitmapRegionDecoderInterface* SkBitmapRegionDecoderInterface::CreateBitmapRegionDecoder(
-        SkData* data, Strategy strategy) {
-    return SkBitmapRegionDecoderInterface::CreateBitmapRegionDecoder(new SkMemoryStream(data),
-            strategy);
-}
-
-SkBitmapRegionDecoderInterface* SkBitmapRegionDecoderInterface::CreateBitmapRegionDecoder(
-        SkStreamRewindable* stream, Strategy strategy) {
-    SkAutoTDelete<SkStreamRewindable> streamDeleter(stream);
-    switch (strategy) {
-        case kOriginal_Strategy: {
-            SkImageDecoder* decoder = SkImageDecoder::Factory(streamDeleter);
-            int width, height;
-            if (nullptr == decoder) {
-                SkCodecPrintf("Error: Could not create image decoder.\n");
-                return nullptr;
-            }
-            if (!decoder->buildTileIndex(streamDeleter.detach(), &width, &height)) {
-                SkCodecPrintf("Error: Could not build tile index.\n");
-                delete decoder;
-                return nullptr;
-            }
-            return new SkBitmapRegionSampler(decoder, width, height);
-        }
-        case kCanvas_Strategy: {
-            SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(streamDeleter.detach()));
-            if (nullptr == codec) {
-                SkCodecPrintf("Error: Failed to create decoder.\n");
-                return nullptr;
-            }
-
-            if (SkEncodedFormat::kWEBP_SkEncodedFormat == codec->getEncodedFormat()) {
-                // FIXME: Support webp using a special case.  Webp does not support
-                //        scanline decoding.
-                return nullptr;
-            }
-
-            switch (codec->getScanlineOrder()) {
-                case SkCodec::kTopDown_SkScanlineOrder:
-                case SkCodec::kNone_SkScanlineOrder:
-                    break;
-                default:
-                    SkCodecPrintf("Error: Scanline ordering not supported.\n");
-                    return nullptr;
-            }
-            return new SkBitmapRegionCanvas(codec.detach());
-        }
-        case kAndroidCodec_Strategy: {
-            SkAutoTDelete<SkAndroidCodec> codec =
-                    SkAndroidCodec::NewFromStream(streamDeleter.detach());
-            if (NULL == codec) {
-                SkCodecPrintf("Error: Failed to create codec.\n");
-                return NULL;
-            }
-            return new SkBitmapRegionCodec(codec.detach());
-        }
-        default:
-            SkASSERT(false);
-            return nullptr;
-    }
-}