53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
// Copyright 2020 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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REG_FIDDLE(SkImage_to_PPM_binary, 256, 256, true, 4) {
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void print_data(const SkData* data, const char* name) {
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if (data) {
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SkDebugf("\nxxd -r -p > %s << EOF", name);
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size_t s = data->size();
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const uint8_t* d = data->bytes();
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for (size_t i = 0; i < s; ++i) {
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if (i % 40 == 0) {
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SkDebugf("\n");
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}
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SkDebugf("%02x", d[i]);
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}
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SkDebugf("\nEOF\n\n");
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}
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}
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sk_sp<SkData> Encode_PPM_B(const SkPixmap& src) {
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if (src.width() <= 0 || src.height() <= 0 || !src.addr() ||
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src.colorType() == kUnknown_SkColorType) {
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return nullptr;
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}
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SkString s = SkStringPrintf("P6\n%d %d\n255\n", src.width(), src.height());
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auto result = SkData::MakeUninitialized(s.size() + 3 * src.width() * src.height());
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uint8_t* ptr = static_cast<uint8_t*>(result->writable_data());
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memcpy(ptr, s.c_str(), s.size());
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ptr += s.size();
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for (int y = 0; y < src.height(); ++y) {
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for (int x = 0; x < src.height(); ++x) {
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SkColor c = src.getColor(x, y);
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*ptr++ = SkColorGetR(c);
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*ptr++ = SkColorGetG(c);
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*ptr++ = SkColorGetB(c);
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}
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}
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return result;
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}
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SkBitmap ToBitmap(SkImage * img) {
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SkBitmap bitmap;
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(void)img->asLegacyBitmap(&bitmap, SkImage::kRO_LegacyBitmapMode);
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return bitmap;
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}
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void draw(SkCanvas*) {
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SkBitmap bitmap = ToBitmap(image.get());
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sk_sp<SkData> data = Encode_PPM_B(bitmap.pixmap());
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print_data(data.get(), "foo.ppm");
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}
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} // END FIDDLE
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