Move the JPEG and PNG codecs from base/gfx to app/gfx/codec. Move the classes...

base/gfx/png_decoder.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_GFX_PNG_DECODER_H_
-#define BASE_GFX_PNG_DECODER_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-
-class SkBitmap;
-
-// Interface for decoding PNG data. This is a wrapper around libpng,
-// which has an inconvenient interface for callers. This is currently designed
-// for use in tests only (where we control the files), so the handling isn't as
-// robust as would be required for a browser (see Decode() for more).  WebKit
-// has its own more complicated PNG decoder which handles, among other things,
-// partially downloaded data.
-class PNGDecoder {
- public:
-  enum ColorFormat {
-    // 3 bytes per pixel (packed), in RGB order regardless of endianness.
-    // This is the native JPEG format.
-    FORMAT_RGB,
-
-    // 4 bytes per pixel, in RGBA order in memory regardless of endianness.
-    FORMAT_RGBA,
-
-    // 4 bytes per pixel, in BGRA order in memory regardless of endianness.
-    // This is the default Windows DIB order.
-    FORMAT_BGRA
-  };
-
-  // Decodes the PNG data contained in input of length input_size. The
-  // decoded data will be placed in *output with the dimensions in *w and *h
-  // on success (returns true). This data will be written in the 'format'
-  // format. On failure, the values of these output variables are undefined.
-  //
-  // This function may not support all PNG types, and it hasn't been tested
-  // with a large number of images, so assume a new format may not work. It's
-  // really designed to be able to read in something written by Encode() above.
-  static bool Decode(const unsigned char* input, size_t input_size,
-                     ColorFormat format, std::vector<unsigned char>* output,
-                     int* w, int* h);
-
-  // A convenience function for decoding PNGs as previously encoded by the PNG
-  // encoder. Chrome encodes png in the format PNGDecoder::FORMAT_BGRA.
-  //
-  // Returns true if data is non-null and can be decoded as a png, false
-  // otherwise.
-  static bool Decode(const std::vector<unsigned char>* data, SkBitmap* icon);
-
-  // Create a SkBitmap from a decoded BGRA DIB. The caller owns the returned
-  // SkBitmap.
-  static SkBitmap* CreateSkBitmapFromBGRAFormat(
-      std::vector<unsigned char>& bgra, int width, int height);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(PNGDecoder);
-};
-
-#endif  // BASE_GFX_PNG_DECODER_H_