Revert of Combine PDF plugin into the Chromium binary.

pdf/pdf.cc

 // Copyright (c) 2010 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.
 
 #include "pdf/pdf.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "pdf/instance.h"
 #include "pdf/out_of_process_instance.h"
 #include "ppapi/c/ppp.h"
-#include "ppapi/cpp/private/internal_module.h"
 #include "ppapi/cpp/private/pdf.h"
 #include "v8/include/v8.h"
 
 bool g_sdk_initialized_via_pepper = false;
 
+// The Mac release builds discard CreateModule and the entire PDFModule
+// definition because they are not referenced here. This causes the Pepper
+// exports (PPP_GetInterface etc) to not be exported. So we force the linker
+// to include this code by using __attribute__((used)).
+#if __GNUC__ >= 4
+#define PDF_USED __attribute__((used))
+#else
+#define PDF_USED
+#endif
+
+#if defined(OS_WIN)
+
+void HandleInvalidParameter(const wchar_t* expression,
+                            const wchar_t* function,
+                            const wchar_t* file,
+                            unsigned int line,
+                            uintptr_t reserved) {
+  // Do the same as Chrome's CHECK(false) which is undefined.
+  ::base::debug::BreakDebugger();
+  return;
+}
+
+void HandlePureVirtualCall() {
+  // Do the same as Chrome's CHECK(false) which is undefined.
+  ::base::debug::BreakDebugger();
+  return;
+}
+
+
+BOOL APIENTRY DllMain(HMODULE module, DWORD reason_for_call, LPVOID reserved) {
+  if (reason_for_call == DLL_PROCESS_ATTACH) {
+    // On windows following handlers work only inside module. So breakpad in
+    // chrome.dll does not catch that. To avoid linking related code or
+    // duplication breakpad_win.cc::InitCrashReporter() just catch errors here
+    // and crash in a way interceptable by breakpad of parent module.
+    _set_invalid_parameter_handler(HandleInvalidParameter);
+    _set_purecall_handler(HandlePureVirtualCall);
+
+#if defined(ARCH_CPU_X86_64) && _MSC_VER <= 1800
+    // VS2013's CRT only checks the existence of FMA3 instructions, not the
+    // enabled-ness of them at the OS level (this is fixed in VS2015). We force
+    // off usage of FMA3 instructions in the CRT to avoid using that path and
+    // hitting illegal instructions when running on CPUs that support FMA3, but
+    // OSs that don't. Because we use the static library CRT we have to call
+    // this function once in each DLL.
+    // See http://crbug.com/436603.
+    _set_FMA3_enable(0);
+#endif  // ARCH_CPU_X86_64 && _MSC_VER <= 1800
+  }
+  return TRUE;
+}
+
+#endif
+
+namespace pp {
+
+PDF_USED Module* CreateModule() {
+  return new chrome_pdf::PDFModule();
+}
+
+}  // namespace pp
+
 namespace chrome_pdf {
 
 PDFModule::PDFModule() {
 }
 
 PDFModule::~PDFModule() {
   if (g_sdk_initialized_via_pepper) {
     chrome_pdf::ShutdownSDK();
     g_sdk_initialized_via_pepper = false;
   }
@@ skipping 17 matching lines @@
     if (!chrome_pdf::InitializeSDK())
       return NULL;
     g_sdk_initialized_via_pepper = true;
   }
 
   if (pp::PDF::IsOutOfProcess(pp::InstanceHandle(instance)))
     return new OutOfProcessInstance(instance);
   return new Instance(instance);
 }
 
+}  // namespace chrome_pdf
 
-// Implementation of Global PPP functions ---------------------------------
-int32_t PPP_InitializeModule(PP_Module module_id,
-                             PPB_GetInterface get_browser_interface) {
-  PDFModule* module = new PDFModule();
-  if (!module->InternalInit(module_id, get_browser_interface)) {
-    delete module;
-    return PP_ERROR_FAILED;
-  }
+extern "C" {
 
-  pp::InternalSetModuleSingleton(module);
-  return PP_OK;
-}
-
-void PPP_ShutdownModule() {
-  delete pp::Module::Get();
-  pp::InternalSetModuleSingleton(NULL);
-}
-
-const void* PPP_GetInterface(const char* interface_name) {
-  if (!pp::Module::Get())
-    return NULL;
-  return pp::Module::Get()->GetPluginInterface(interface_name);
-}
-
+// TODO(sanjeevr): It might make sense to provide more stateful wrappers over
+// the internal PDF SDK (such as LoadDocument, LoadPage etc). Determine if we
+// need to provide this.
+// Wrapper exports over the PDF engine that can be used by an external module
+// such as Chrome (since Chrome cannot directly pull in PDFium sources).
 #if defined(OS_WIN)
-bool RenderPDFPageToDC(const void* pdf_buffer,
+// |pdf_buffer| is the buffer that contains the entire PDF document to be
+//     rendered.
+// |buffer_size| is the size of |pdf_buffer| in bytes.
+// |page_number| is the 0-based index of the page to be rendered.
+// |dc| is the device context to render into.
+// |dpi_x| and |dpi_y| are the x and y resolutions respectively. If either
+//     value is -1, the dpi from the DC will be used.
+// |bounds_origin_x|, |bounds_origin_y|, |bounds_width| and |bounds_height|
+//     specify a bounds rectangle within the DC in which to render the PDF
+//     page.
+// |fit_to_bounds| specifies whether the output should be shrunk to fit the
+//     supplied bounds if the page size is larger than the bounds in any
+//     dimension. If this is false, parts of the PDF page that lie outside
+//     the bounds will be clipped.
+// |stretch_to_bounds| specifies whether the output should be stretched to fit
+//     the supplied bounds if the page size is smaller than the bounds in any
+//     dimension.
+// If both |fit_to_bounds| and |stretch_to_bounds| are true, then
+//     |fit_to_bounds| is honored first.
+// |keep_aspect_ratio| If any scaling is to be done is true, this flag
+//     specifies whether the original aspect ratio of the page should be
+//     preserved while scaling.
+// |center_in_bounds| specifies whether the final image (after any scaling is
+//     done) should be centered within the given bounds.
+// |autorotate| specifies whether the final image should be rotated to match
+//     the output bound.
+// Returns false if the document or the page number are not valid.
+PP_EXPORT bool RenderPDFPageToDC(const void* pdf_buffer,
                                  int buffer_size,
                                  int page_number,
                                  HDC dc,
-                                 int dpi,
+                                 int dpi_x,
+                                 int dpi_y,
                                  int bounds_origin_x,
                                  int bounds_origin_y,
                                  int bounds_width,
                                  int bounds_height,
                                  bool fit_to_bounds,
                                  bool stretch_to_bounds,
                                  bool keep_aspect_ratio,
                                  bool center_in_bounds,
                                  bool autorotate) {
   if (!g_sdk_initialized_via_pepper) {
     if (!chrome_pdf::InitializeSDK()) {
       return false;
     }
   }
   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
       chrome_pdf::PDFEngineExports::Create());
   chrome_pdf::PDFEngineExports::RenderingSettings settings(
-      dpi, dpi, pp::Rect(bounds_origin_x, bounds_origin_y, bounds_width,
-                         bounds_height),
+      dpi_x, dpi_y, pp::Rect(bounds_origin_x, bounds_origin_y, bounds_width,
+                             bounds_height),
       fit_to_bounds, stretch_to_bounds, keep_aspect_ratio, center_in_bounds,
       autorotate);
   bool ret = engine_exports->RenderPDFPageToDC(pdf_buffer, buffer_size,
                                                page_number, settings, dc);
   if (!g_sdk_initialized_via_pepper) {
     chrome_pdf::ShutdownSDK();
   }
   return ret;
 }
 
 #endif  // OS_WIN
 
+// |page_count| and |max_page_width| are optional and can be NULL.
+// Returns false if the document is not valid.
+PDF_USED PP_EXPORT
 bool GetPDFDocInfo(const void* pdf_buffer,
                    int buffer_size, int* page_count,
                    double* max_page_width) {
   if (!g_sdk_initialized_via_pepper) {
     if (!chrome_pdf::InitializeSDK())
       return false;
   }
   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
       chrome_pdf::PDFEngineExports::Create());
   bool ret = engine_exports->GetPDFDocInfo(
       pdf_buffer, buffer_size, page_count, max_page_width);
   if (!g_sdk_initialized_via_pepper) {
     chrome_pdf::ShutdownSDK();
   }
   return ret;
 }
 
+// Gets the dimensions of a specific page in a document.
+// |pdf_buffer| is the buffer that contains the entire PDF document to be
+//     rendered.
+// |pdf_buffer_size| is the size of |pdf_buffer| in bytes.
+// |page_number| is the page number that the function will get the dimensions
+//     of.
+// |width| is the output for the width of the page in points.
+// |height| is the output for the height of the page in points.
+// Returns false if the document or the page number are not valid.
+PDF_USED PP_EXPORT
 bool GetPDFPageSizeByIndex(const void* pdf_buffer,
                            int pdf_buffer_size, int page_number,
                            double* width, double* height) {
   if (!g_sdk_initialized_via_pepper) {
     if (!chrome_pdf::InitializeSDK())
       return false;
   }
   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
       chrome_pdf::PDFEngineExports::Create());
   bool ret = engine_exports->GetPDFPageSizeByIndex(
       pdf_buffer, pdf_buffer_size, page_number, width, height);
   if (!g_sdk_initialized_via_pepper)
     chrome_pdf::ShutdownSDK();
   return ret;
 }
 
+// Renders PDF page into 4-byte per pixel BGRA color bitmap.
+// |pdf_buffer| is the buffer that contains the entire PDF document to be
+//     rendered.
+// |pdf_buffer_size| is the size of |pdf_buffer| in bytes.
+// |page_number| is the 0-based index of the page to be rendered.
+// |bitmap_buffer| is the output buffer for bitmap.
+// |bitmap_width| is the width of the output bitmap.
+// |bitmap_height| is the height of the output bitmap.
+// |dpi| is the resolutions.
+// |autorotate| specifies whether the final image should be rotated to match
+//     the output bound.
+// Returns false if the document or the page number are not valid.
+PDF_USED PP_EXPORT
 bool RenderPDFPageToBitmap(const void* pdf_buffer,
                            int pdf_buffer_size,
                            int page_number,
                            void* bitmap_buffer,
                            int bitmap_width,
                            int bitmap_height,
                            int dpi,
                            bool autorotate) {
   if (!g_sdk_initialized_via_pepper) {
     if (!chrome_pdf::InitializeSDK())
       return false;
   }
   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
       chrome_pdf::PDFEngineExports::Create());
   chrome_pdf::PDFEngineExports::RenderingSettings settings(
       dpi, dpi, pp::Rect(bitmap_width, bitmap_height), true, false, true, true,
       autorotate);
   bool ret = engine_exports->RenderPDFPageToBitmap(
       pdf_buffer, pdf_buffer_size, page_number, settings, bitmap_buffer);
   if (!g_sdk_initialized_via_pepper) {
     chrome_pdf::ShutdownSDK();
   }
   return ret;
 }
 
-}  // namespace chrome_pdf
+}  // extern "C"