55 lines
1.8 KiB
C++
55 lines
1.8 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_ascii, 256, 256, true, 4) {
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void dump_txt(const SkData* data, const char* name) {
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if (data) {
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SkDebugf("\ncat > %s << EOF\n", name);
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size_t s = data->size();
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const char* d = (const char*)data->bytes();
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while (s > 0) {
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int l = (int)std::min(s, (size_t)1024);
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SkDebugf("%.*s", l, d);
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s -= l;
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d += l;
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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_A(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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SkDynamicMemoryWStream buf;
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SkString s = SkStringPrintf("P3\n%d %d\n255\n", src.width(), src.height());
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buf.write(s.c_str(), 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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char buffer[13];
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SkColor c = src.getColor(x, y);
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int n = snprintf(buffer, sizeof(buffer), "%d %d %d\n", SkColorGetR(c),
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SkColorGetG(c), SkColorGetB(c));
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if (n < 6 || n + 1 > (int)sizeof(buffer)) {
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return nullptr;
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}
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buf.write(buffer, n);
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}
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}
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return buf.detachAsData();
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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_A(bitmap.pixmap());
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dump_txt(data.get(), "fooa.ppm");
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}
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} // END FIDDLE
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