Remove ICodec_* Interfaces.

All of the ICodec_* interfaces had a single implementation. This CL removes
the interfaces and uses the concrete classes in their place.

BUG=pdfium:468

Review URL: https://codereview.chromium.org/1876023003

1 files changed, 42 insertions, 0 deletions

diff --git a/core/fxcodec/codec/ccodec_pngmodule.h b/core/fxcodec/codec/ccodec_pngmodule.h
new file mode 100644
index 0000000000..23b5d4b5b9
--- /dev/null
+++ b/core/fxcodec/codec/ccodec_pngmodule.h
@@ -0,0 +1,42 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_
+#define CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_
+
+#include "core/fxcrt/include/fx_system.h"
+
+class CFX_DIBAttribute;
+struct FXPNG_Context;
+
+#define PNG_ERROR_SIZE 256
+
+class CCodec_PngModule {
+ public:
+  CCodec_PngModule() { FXSYS_memset(m_szLastError, 0, sizeof(m_szLastError)); }
+
+  FXPNG_Context* Start(void* pModule);
+  void Finish(FXPNG_Context* pContext);
+  FX_BOOL Input(FXPNG_Context* pContext,
+                const uint8_t* src_buf,
+                uint32_t src_size,
+                CFX_DIBAttribute* pAttribute);
+
+  FX_BOOL (*ReadHeaderCallback)(void* pModule,
+                                int width,
+                                int height,
+                                int bpc,
+                                int pass,
+                                int* color_type,
+                                double* gamma);
+  FX_BOOL (*AskScanlineBufCallback)(void* pModule, int line, uint8_t*& src_buf);
+  void (*FillScanlineBufCompletedCallback)(void* pModule, int pass, int line);
+
+ protected:
+  FX_CHAR m_szLastError[PNG_ERROR_SIZE];
+};
+
+#endif  // CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_