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Unified Diff: src/utils/SkPDFRasterizer.cpp

Issue 20220002: Add libpoppler PDF rasterizer (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Poppler gypfile simplification Created 7 years, 4 months ago
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Index: src/utils/SkPDFRasterizer.cpp
diff --git a/src/utils/SkPDFRasterizer.cpp b/src/utils/SkPDFRasterizer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3fd2728a16a51add623abf2c8aee0183fd463c81
--- /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;
+}
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