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 "SkPDFRasterizer.h"
15#include "SkColorPriv.h"
16
17#ifdef SK_BUILD_NATIVE_PDF_RENDERER
18#include "SkPdfRenderer.h"
19#endif  // SK_BUILD_NATIVE_PDF_RENDERER
20
21#ifdef SK_BUILD_POPPLER
22#include <poppler-document.h>
23#include <poppler-image.h>
24#include <poppler-page.h>
25#include <poppler-page-renderer.h>
26#endif  // SK_BUILD_POPPLER
27
28#ifdef SK_BUILD_POPPLER
29bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output) {
30  size_t size = pdf->getLength();
31  SkAutoFree buffer(sk_malloc_throw(size));
32  pdf->read(buffer.get(), size);
33
34  SkAutoTDelete<poppler::document> doc(
35      poppler::document::load_from_raw_data((const char*)buffer.get(), size));
36  if (!doc.get() || doc->is_locked()) {
37    return false;
38  }
39
40  SkAutoTDelete<poppler::page> page(doc->create_page(0));
41  poppler::page_renderer renderer;
42  poppler::image image = renderer.render_page(page.get());
43
44  if (!image.is_valid() || image.format() != poppler::image::format_argb32) {
45    return false;
46  }
47
48  int width = image.width(), height = image.height();
49  size_t rowSize = image.bytes_per_row();
50  char *imgData = image.data();
51
52  SkBitmap bitmap;
53  if (!bitmap.allocPixels(SkImageInfo::MakeN32Premul(width, height))) {
54    return false;
55  }
56  bitmap.eraseColor(SK_ColorWHITE);
57  SkPMColor* bitmapPixels = (SkPMColor*)bitmap.getPixels();
58
59  // do pixel-by-pixel copy to deal with RGBA ordering conversions
60  for (int y = 0; y < height; y++) {
61    char *rowData = imgData;
62    for (int x = 0; x < width; x++) {
63      uint8_t a = rowData[3];
64      uint8_t r = rowData[2];
65      uint8_t g = rowData[1];
66      uint8_t b = rowData[0];
67
68      *bitmapPixels = SkPreMultiplyARGB(a, r, g, b);
69
70      bitmapPixels++;
71      rowData += 4;
72    }
73    imgData += rowSize;
74  }
75
76  output->swap(bitmap);
77
78  return true;
79}
80#endif  // SK_BUILD_POPPLER
81
82#ifdef SK_BUILD_NATIVE_PDF_RENDERER
83bool SkNativeRasterizePDF(SkStream* pdf, SkBitmap* output) {
84    return SkPDFNativeRenderToBitmap(pdf, output);
85}
86#endif  // SK_BUILD_NATIVE_PDF_RENDERER
87