Add the pdf plugin's source in src\pdf.

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/pdf.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)
+HMODULE g_hmodule;
+
+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) {
+  g_hmodule = module;
+  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);
+  }
+  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;
+  }
+}
+
+bool PDFModule::Init() {
+  return true;
+}
+
+pp::Instance* PDFModule::CreateInstance(PP_Instance instance) {
+  if (!g_sdk_initialized_via_pepper) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      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
+
+extern "C" {
+
+// 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)
+// |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_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(g_hmodule)) {
+      return false;
+    }
+  }
+  scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
+      chrome_pdf::PDFEngineExports::Create());
+  chrome_pdf::PDFEngineExports::RenderingSettings settings(
+      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) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      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;
+}
+
+// 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) {
+    void* data = NULL;
+#if defined(OS_WIN)
+    data = g_hmodule;
+#endif
+    if (!chrome_pdf::InitializeSDK(data))
+      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;
+}
+
+}  // extern "C"