Introduce CodecModuleIface for progressive decoder modules.

Another step before trying to fix the memory issue. Forces common
APIs on the bunch of decoders, though some methods are unused.
Requires adding some arguments/return values to get to a common
API which are not used in all cases (yet?). Required converting
some args to spans. Required proxying a GetJumpMark() call through
the public module API to the private context.

Bug: pdfium:1082

Change-Id: I0c0b7415141ff2a6f4f44777ca3d05521f08130d
Reviewed-on: https://pdfium-review.googlesource.com/41950
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

1 files changed, 9 insertions, 6 deletions

diff --git a/core/fxcodec/codec/ccodec_tiffmodule.h b/core/fxcodec/codec/ccodec_tiffmodule.h
index 8d3bed7df2..15d2a9f6d2 100644
--- a/core/fxcodec/codec/ccodec_tiffmodule.h
+++ b/core/fxcodec/codec/ccodec_tiffmodule.h
@@ -9,6 +9,7 @@
 
 #include <memory>
 
+#include "core/fxcodec/codec/codec_module_iface.h"
 #include "core/fxcrt/fx_system.h"
 #include "core/fxcrt/retain_ptr.h"
 #include "core/fxge/dib/cfx_dibitmap.h"
@@ -16,15 +17,17 @@
 class CFX_DIBAttribute;
 class IFX_SeekableReadStream;
 
-class CCodec_TiffModule {
+class CCodec_TiffModule final : public CodecModuleIface {
  public:
-  class Context {
-   public:
-    virtual ~Context() {}
-  };
-
   std::unique_ptr<Context> CreateDecoder(
       const RetainPtr<IFX_SeekableReadStream>& file_ptr);
+
+  // CodecModuleIface:
+  FX_FILESIZE GetAvailInput(Context* pContext) const override;
+  bool Input(Context* pContext,
+             pdfium::span<uint8_t> src_buf,
+             CFX_DIBAttribute* pAttribute) override;
+
   bool LoadFrameInfo(Context* ctx,
                      int32_t frame,
                      int32_t* width,