diff options
Diffstat (limited to 'experimental/tools/coreGraphicsPdf2png.cpp')
-rw-r--r-- | experimental/tools/coreGraphicsPdf2png.cpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/experimental/tools/coreGraphicsPdf2png.cpp b/experimental/tools/coreGraphicsPdf2png.cpp new file mode 100644 index 0000000000..98c5b286c8 --- /dev/null +++ b/experimental/tools/coreGraphicsPdf2png.cpp @@ -0,0 +1,57 @@ +/* + * Copyright 2015 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <stdio.h> + +#include "SkBitmap.h" +#include "SkCGUtils.h" +#include "SkImageEncoder.h" +#include "SkStream.h" + +class StdOutWStream : public SkWStream { +public: + StdOutWStream() : fBytesWritten(0) {} + bool write(const void* buffer, size_t size) final { + fBytesWritten += size; + return size == fwrite(buffer, 1, size, stdout); + } + size_t bytesWritten() const final { return fBytesWritten; } + +private: + size_t fBytesWritten; +}; + +static SkStreamAsset* open_for_reading(const char* path) { + if (!path || !path[0] || 0 == strcmp(path, "-")) { + return new SkFILEStream(stdin, SkFILEStream::kCallerRetains_Ownership); + } + return SkStream::NewFromFile(path); +} + +static SkWStream* open_for_writing(const char* path) { + if (!path || !path[0] || 0 == strcmp(path, "-")) { + return new StdOutWStream; + } + return new SkFILEWStream(path); +} + +static bool to_png(SkWStream* o, const SkBitmap& bm) { + return SkImageEncoder::EncodeStream(o, bm, SkImageEncoder::kPNG_Type, 100); +} + +// Note: I could implement this using only MacOS|CG API calls, but +// since most of this is already done in Skia, here it is. +int main(int argc, char** argv) { + SkBitmap bm; + SkAutoTDelete<SkStream> in(open_for_reading(argc > 1 ? argv[1] : NULL)); + SkAutoTDelete<SkWStream> out(open_for_writing(argc > 2 ? argv[2] : NULL)); + if (SkPDFDocumentToBitmap(in.detach(), &bm) && to_png(out, bm)) { + return 0; + } else { + return 1; + } +} |