1
2 /*
3 * Copyright 2013 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9 #ifdef SK_BUILD_FOR_WIN32
10 #pragma warning(push)
11 #pragma warning(disable : 4530)
12 #endif
13
14 #include <poppler-document.h>
15 #include <poppler-image.h>
16 #include <poppler-page.h>
17 #include <poppler-page-renderer.h>
18
19 #include "SkPDFRasterizer.h"
20 #include "SkColorPriv.h"
21 #ifdef SK_BUILD_NATIVE_PDF_RENDERER
22 #include "SkPdfRenderer.h"
23 #endif // SK_BUILD_NATIVE_PDF_RENDERER
24
SkPopplerRasterizePDF(SkStream * pdf,SkBitmap * output)25 bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output) {
26 size_t size = pdf->getLength();
27 SkAutoFree buffer(sk_malloc_throw(size));
28 pdf->read(buffer.get(), size);
29
30 SkAutoTDelete<poppler::document> doc(
31 poppler::document::load_from_raw_data((const char*)buffer.get(), size));
32 if (!doc.get() || doc->is_locked()) {
33 return false;
34 }
35
36 SkAutoTDelete<poppler::page> page(doc->create_page(0));
37 poppler::page_renderer renderer;
38 poppler::image image = renderer.render_page(page.get());
39
40 if (!image.is_valid() || image.format() != poppler::image::format_argb32) {
41 return false;
42 }
43
44 int width = image.width(), height = image.height();
45 size_t rowSize = image.bytes_per_row();
46 char *imgData = image.data();
47
48 SkBitmap bitmap;
49 bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
50 if (!bitmap.allocPixels()) {
51 return false;
52 }
53 bitmap.eraseColor(SK_ColorWHITE);
54 SkPMColor* bitmapPixels = (SkPMColor*)bitmap.getPixels();
55
56 // do pixel-by-pixel copy to deal with RGBA ordering conversions
57 for (int y = 0; y < height; y++) {
58 char *rowData = imgData;
59 for (int x = 0; x < width; x++) {
60 uint8_t a = rowData[3];
61 uint8_t r = rowData[2];
62 uint8_t g = rowData[1];
63 uint8_t b = rowData[0];
64
65 *bitmapPixels = SkPreMultiplyARGB(a, r, g, b);
66
67 bitmapPixels++;
68 rowData += 4;
69 }
70 imgData += rowSize;
71 }
72
73 output->swap(bitmap);
74
75 return true;
76 }
77
78 #ifdef SK_BUILD_NATIVE_PDF_RENDERER
SkNativeRasterizePDF(SkStream * pdf,SkBitmap * output)79 bool SkNativeRasterizePDF(SkStream* pdf, SkBitmap* output) {
80 return SkPDFNativeRenderToBitmap(pdf, output);
81 }
82 #endif // SK_BUILD_NATIVE_PDF_RENDERER
83