| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package image |
| |
| import ( |
| "bytes" |
| "image" |
| "image/color" |
| "image/png" |
| |
| "android.googlesource.com/platform/tools/gpu/binary" |
| ) |
| |
| type fmtPNG struct{ binary.Generate } |
| |
| func (*fmtPNG) String() string { return "PNG" } |
| func (*fmtPNG) Check(d []byte, w, h int) error { return nil } |
| |
| // PNG returns a format representing the the texture compression format with the |
| // same name. |
| func PNG() Format { return &fmtPNG{} } |
| |
| func init() { |
| RegisterConverter(RGBA(), PNG(), |
| func(src []byte, width, height int) ([]byte, error) { |
| img := image.NewRGBA(image.Rect(0, 0, width, height)) |
| i := 0 |
| for y := 0; y < height; y++ { |
| for x := 0; x < width; x++ { |
| img.Set(x, y, color.RGBA{src[i+0], src[i+1], src[i+2], src[i+3]}) |
| i += 4 |
| } |
| } |
| |
| buffer := bytes.Buffer{} |
| png.Encode(&buffer, img) |
| return buffer.Bytes(), nil |
| }) |
| } |