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authorTom Sepez <tsepez@chromium.org>2017-03-01 12:15:00 -0800
committerChromium commit bot <commit-bot@chromium.org>2017-03-01 20:43:46 +0000
commitb4a261855b34b4c8d938118762ae609a34a3ae99 (patch)
tree7b084e874cbf41eec73a3cec949dc810983cc0cf /core/fxcodec/codec/icodec_gifmodule.h
parentfed39cf4a23341cf9cb5a5b432248b4247022282 (diff)
downloadpdfium-b4a261855b34b4c8d938118762ae609a34a3ae99.tar.xz
Create virtual codec APIs so chrome/fuzzers can link separately
The one step to make an actual concrete class is conditionalized in fpdfview and is unconditional in the fuzzer. Also replace the clumsy C-style callbacks with a delegate interface as long as we are making new interfaces. Change-Id: I733a437483ce5e0c34211cfbbda05105336f55b5 Reviewed-on: https://pdfium-review.googlesource.com/2887 Commit-Queue: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
Diffstat (limited to 'core/fxcodec/codec/icodec_gifmodule.h')
-rw-r--r--core/fxcodec/codec/icodec_gifmodule.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/core/fxcodec/codec/icodec_gifmodule.h b/core/fxcodec/codec/icodec_gifmodule.h
new file mode 100644
index 0000000000..9dc0708ebe
--- /dev/null
+++ b/core/fxcodec/codec/icodec_gifmodule.h
@@ -0,0 +1,68 @@
+// Copyright 2017 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_ICODEC_GIFMODULE_H_
+#define CORE_FXCODEC_CODEC_ICODEC_GIFMODULE_H_
+
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxcrt/fx_system.h"
+
+class CFX_DIBAttribute;
+struct FXGIF_Context;
+
+// Virtual interface to avoid linking in a concrete implementation
+// if we do not enable this codec.
+class ICodec_GifModule {
+ public:
+ class Delegate {
+ public:
+ virtual void GifRecordCurrentPosition(uint32_t& cur_pos) = 0;
+ virtual uint8_t* GifAskLocalPaletteBuf(int32_t frame_num,
+ int32_t pal_size) = 0;
+ virtual bool GifInputRecordPositionBuf(uint32_t rcd_pos,
+ const FX_RECT& img_rc,
+ int32_t pal_num,
+ void* pal_ptr,
+ int32_t delay_time,
+ bool user_input,
+ int32_t trans_index,
+ int32_t disposal_method,
+ bool interlace) = 0;
+ virtual void GifReadScanline(int32_t row_num, uint8_t* row_buf) = 0;
+ };
+
+ virtual ~ICodec_GifModule() {}
+
+ virtual FXGIF_Context* Start() = 0;
+ virtual void Finish(FXGIF_Context* pContext) = 0;
+ virtual uint32_t GetAvailInput(FXGIF_Context* pContext,
+ uint8_t** avail_buf_ptr = nullptr) = 0;
+
+ virtual void Input(FXGIF_Context* pContext,
+ const uint8_t* src_buf,
+ uint32_t src_size) = 0;
+
+ virtual int32_t ReadHeader(FXGIF_Context* pContext,
+ int* width,
+ int* height,
+ int* pal_num,
+ void** pal_pp,
+ int* bg_index,
+ CFX_DIBAttribute* pAttribute) = 0;
+
+ virtual int32_t LoadFrameInfo(FXGIF_Context* pContext, int* frame_num) = 0;
+ virtual int32_t LoadFrame(FXGIF_Context* pContext,
+ int frame_num,
+ CFX_DIBAttribute* pAttribute) = 0;
+
+ Delegate* GetDelegate() const { return m_pDelegate; }
+ void SetDelegate(Delegate* pDelegate) { m_pDelegate = pDelegate; }
+
+ protected:
+ Delegate* m_pDelegate;
+};
+
+#endif // CORE_FXCODEC_CODEC_ICODEC_GIFMODULE_H_