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Side by Side 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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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
22 bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output) {
23 size_t size = pdf->getLength();
24 void* buffer = sk_malloc_throw(size);
25 pdf->read(buffer, size);
26
27 SkAutoTDelete<poppler::document> doc(
28 poppler::document::load_from_raw_data((const char*)buffer, size));
29 if (!doc.get() || doc->is_locked()) {
30 return false;
31 }
32
33 SkAutoTDelete<poppler::page> page(doc->create_page(0));
34 poppler::page_renderer renderer;
35 poppler::image image = renderer.render_page(page.get());
36
37 if (!image.is_valid() || image.format() != poppler::image::format_argb32) {
38 return false;
39 }
40
41 size_t width = image.width(), height = image.height();
42 size_t rowSize = image.bytes_per_row();
43 char *imgData = image.data();
44
45 SkBitmap bitmap;
46 bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
47 if (!bitmap.allocPixels()) {
48 return false;
49 }
50 bitmap.eraseColor(SK_ColorWHITE);
51 SkPMColor* bitmapPixels = (SkPMColor*)bitmap.getPixels();
52
53 // do pixel-by-pixel copy to deal with RGBA ordering conversions
54 for (size_t y = 0; y < height; y++) {
55 char *rowData = imgData;
56 for (size_t x = 0; x < width; x++) {
57 uint8_t a = rowData[3];
58 uint8_t r = rowData[2];
59 uint8_t g = rowData[1];
60 uint8_t b = rowData[0];
61
62 *bitmapPixels = SkPreMultiplyARGB(a, r, g, b);
63
64 bitmapPixels++;
65 rowData += 4;
66 }
67 imgData += rowSize;
68 }
69
70 output->swap(bitmap);
71
72 return true;
73 }
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