The CL adds libpoppler to DEPS and adds a libpoppler-cpp gyp target for Linux, Windows, and Mac. This does not currently change the GM tool to use poppler - that will be a refactor job in a separate CL.

Several third-party libraries are pulled in, and platform-specific headers are included under third_party/(library name). Chromium style READMEs containing a description of the library, as well as a LICENSE file are also included in that directory. (is there a Skia-specific style for these?)

R=vandebo@chromium.org, edisonn@google.com, djsollen@chromium.org, bungeman@chromium.org, open-source-third-party-reviews@google.com, thestig@chromium.org

Author: richardlin@chromium.org

Review URL: https://chromiumcodereview.appspot.com/20220002

git-svn-id: http://skia.googlecode.com/svn/trunk@10823 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 88 insertions, 0 deletions

diff --git a/src/utils/SkPDFRasterizer.cpp b/src/utils/SkPDFRasterizer.cpp
new file mode 100644
index 0000000000..3fd2728a16
--- /dev/null
+++ b/src/utils/SkPDFRasterizer.cpp
@@ -0,0 +1,73 @@
+
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifdef SK_BUILD_FOR_WIN32
+#pragma warning(push)
+#pragma warning(disable : 4530)
+#endif
+
+#include <poppler-document.h>
+#include <poppler-image.h>
+#include <poppler-page.h>
+#include <poppler-page-renderer.h>
+
+#include "SkPDFRasterizer.h"
+#include "SkColorPriv.h"
+
+bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output) {
+  size_t size = pdf->getLength();
+  void* buffer = sk_malloc_throw(size);
+  pdf->read(buffer, size);
+
+  SkAutoTDelete<poppler::document> doc(
+      poppler::document::load_from_raw_data((const char*)buffer, size));
+  if (!doc.get() || doc->is_locked()) {
+    return false;
+  }
+
+  SkAutoTDelete<poppler::page> page(doc->create_page(0));
+  poppler::page_renderer renderer;
+  poppler::image image = renderer.render_page(page.get());
+
+  if (!image.is_valid() || image.format() != poppler::image::format_argb32) {
+    return false;
+  }
+
+  size_t width = image.width(), height = image.height();
+  size_t rowSize = image.bytes_per_row();
+  char *imgData = image.data();
+
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
+  if (!bitmap.allocPixels()) {
+      return false;
+  }
+  bitmap.eraseColor(SK_ColorWHITE);
+  SkPMColor* bitmapPixels = (SkPMColor*)bitmap.getPixels();
+
+  // do pixel-by-pixel copy to deal with RGBA ordering conversions
+  for (size_t y = 0; y < height; y++) {
+    char *rowData = imgData;
+    for (size_t x = 0; x < width; x++) {
+      uint8_t a = rowData[3];
+      uint8_t r = rowData[2];
+      uint8_t g = rowData[1];
+      uint8_t b = rowData[0];
+
+      *bitmapPixels = SkPreMultiplyARGB(a, r, g, b);
+
+      bitmapPixels++;
+      rowData += 4;
+    }
+    imgData += rowSize;
+  }
+
+  output->swap(bitmap);
+
+  return true;
+}
diff --git a/src/utils/SkPDFRasterizer.h b/src/utils/SkPDFRasterizer.h
new file mode 100644
index 0000000000..4a4083cc21
--- /dev/null
+++ b/src/utils/SkPDFRasterizer.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkPDFRasterizer_DEFINED
+#define SkPDFRasterizer_DEFINED
+
+#include "SkBitmap.h"
+#include "SkStream.h"
+
+bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output);
+
+#endif