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/*
* 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 "SkCommandLineFlags.h"
#include "SkCommonFlags.h"
#include "SkImageDecoder.h"
#include "SkStream.h"
#include "SkTypes.h"
#include "sk_tool_utils.h"
DEFINE_string(in, "input.png", "Input image");
DEFINE_string(out, "blurred.png", "Output image");
DEFINE_double(sigma, 1, "Sigma to be used for blur (> 0.0f)");
// This tool just performs a blur on an input image
// Return codes:
static const int kSuccess = 0;
static const int kError = 1;
int tool_main(int argc, char** argv);
int tool_main(int argc, char** argv) {
SkCommandLineFlags::SetUsage("Brute force blur of an image.");
SkCommandLineFlags::Parse(argc, argv);
if (FLAGS_sigma <= 0) {
if (!FLAGS_quiet) {
SkDebugf("Sigma must be greater than zero (it is %f).\n", FLAGS_sigma);
}
return kError;
}
SkFILEStream inputStream(FLAGS_in[0]);
if (!inputStream.isValid()) {
if (!FLAGS_quiet) {
SkDebugf("Couldn't open file: %s\n", FLAGS_in[0]);
}
return kError;
}
SkAutoTDelete<SkImageDecoder> codec(SkImageDecoder::Factory(&inputStream));
if (!codec) {
if (!FLAGS_quiet) {
SkDebugf("Couldn't create codec for: %s.\n", FLAGS_in[0]);
}
return kError;
}
SkBitmap src;
inputStream.rewind();
SkImageDecoder::Result res = codec->decode(&inputStream, &src,
kN32_SkColorType,
SkImageDecoder::kDecodePixels_Mode);
if (SkImageDecoder::kSuccess != res) {
if (!FLAGS_quiet) {
SkDebugf("Couldn't decode image: %s.\n", FLAGS_in[0]);
}
return kError;
}
SkBitmap dst = sk_tool_utils::slow_blur(src, (float) FLAGS_sigma);
if (!SkImageEncoder::EncodeFile(FLAGS_out[0], dst, SkImageEncoder::kPNG_Type, 100)) {
if (!FLAGS_quiet) {
SkDebugf("Couldn't write to file: %s\n", FLAGS_out[0]);
}
return kError;
}
return kSuccess;
}
#if !defined SK_BUILD_FOR_IOS
int main(int argc, char * const argv[]) {
return tool_main(argc, (char**) argv);
}
#endif
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