[WIP] Move ImageDecoders to SkCodec

third_party/WebKit/Source/platform/image-decoders/bmp/BMPImageDecoder.cpp

Index: third_party/WebKit/Source/platform/image-decoders/bmp/BMPImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/bmp/BMPImageDecoder.cpp b/third_party/WebKit/Source/platform/image-decoders/bmp/BMPImageDecoder.cpp
deleted file mode 100644
index 5666ef6a3b367ae10ae274c0b5a20eed2219b5a0..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/image-decoders/bmp/BMPImageDecoder.cpp
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "platform/image-decoders/bmp/BMPImageDecoder.h"
-
-#include "platform/image-decoders/FastSharedBufferReader.h"
-#include "platform/wtf/PtrUtil.h"
-
-namespace blink {
-
-// Number of bits in .BMP used to store the file header (doesn't match
-// "sizeof(BMPImageDecoder::BitmapFileHeader)" since we omit some fields and
-// don't pack).
-static const size_t kSizeOfFileHeader = 14;
-
-BMPImageDecoder::BMPImageDecoder(AlphaOption alpha_option,
-                                 const ColorBehavior& color_behavior,
-                                 size_t max_decoded_bytes)
-    : ImageDecoder(alpha_option, color_behavior, max_decoded_bytes),
-      decoded_offset_(0) {}
-
-void BMPImageDecoder::OnSetData(SegmentReader* data) {
-  if (reader_)
-    reader_->SetData(data);
-}
-
-bool BMPImageDecoder::SetFailed() {
-  reader_.reset();
-  return ImageDecoder::SetFailed();
-}
-
-void BMPImageDecoder::Decode(bool only_size) {
-  if (Failed())
-    return;
-
-  // If we couldn't decode the image but we've received all the data, decoding
-  // has failed.
-  if (!DecodeHelper(only_size) && IsAllDataReceived())
-    SetFailed();
-  // If we're done decoding the image, we don't need the BMPImageReader
-  // anymore.  (If we failed, |reader_| has already been cleared.)
-  else if (!frame_buffer_cache_.IsEmpty() &&
-           (frame_buffer_cache_.front().GetStatus() ==
-            ImageFrame::kFrameComplete))
-    reader_.reset();
-}
-
-bool BMPImageDecoder::DecodeHelper(bool only_size) {
-  size_t img_data_offset = 0;
-  if ((decoded_offset_ < kSizeOfFileHeader) &&
-      !ProcessFileHeader(img_data_offset))
-    return false;
-
-  if (!reader_) {
-    reader_ = WTF::WrapUnique(
-        new BMPImageReader(this, decoded_offset_, img_data_offset, false));
-    reader_->SetData(data_.Get());
-  }
-
-  if (!frame_buffer_cache_.IsEmpty())
-    reader_->SetBuffer(&frame_buffer_cache_.front());
-
-  return reader_->DecodeBMP(only_size);
-}
-
-bool BMPImageDecoder::ProcessFileHeader(size_t& img_data_offset) {
-  // Read file header.
-  DCHECK(!decoded_offset_);
-  if (data_->size() < kSizeOfFileHeader)
-    return false;
-
-  char buffer[kSizeOfFileHeader];
-  FastSharedBufferReader fast_reader(data_);
-  const char* file_header =
-      fast_reader.GetConsecutiveData(0, kSizeOfFileHeader, buffer);
-  const uint16_t file_type =
-      (file_header[0] << 8) | static_cast<uint8_t>(file_header[1]);
-  img_data_offset = BMPImageReader::ReadUint32(&file_header[10]);
-  decoded_offset_ = kSizeOfFileHeader;
-
-  // See if this is a bitmap filetype we understand.
-  enum {
-    BMAP = 0x424D,  // "BM"
-    // The following additional OS/2 2.x header values (see
-    // http://www.fileformat.info/format/os2bmp/egff.htm ) aren't widely
-    // decoded, and are unlikely to be in much use.
-    /*
-    ICON = 0x4943,  // "IC"
-    POINTER = 0x5054,  // "PT"
-    COLORICON = 0x4349,  // "CI"
-    COLORPOINTER = 0x4350,  // "CP"
-    BITMAPARRAY = 0x4241,  // "BA"
-    */
-  };
-  return (file_type == BMAP) || SetFailed();
-}
-
-}  // namespace blink