| // Copyright (C) 2016 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 ( |
| "android.googlesource.com/platform/tools/gpu/framework/binary" |
| "android.googlesource.com/platform/tools/gpu/framework/math/sint" |
| "android.googlesource.com/platform/tools/gpu/gapid/image" |
| ) |
| |
| func init() { |
| image.RegisterConverter(image.ATC_RGB_AMD(), image.RGBA(), |
| func(src []byte, width, height int) ([]byte, error) { |
| dst, j := make([]byte, width*height*4), 0 |
| |
| blockWidth := sint.Max(width/4, 1) |
| blockHeight := sint.Max(height/4, 1) |
| |
| bs := binary.BitStream{Data: src} |
| |
| c := [4][3]uint32{ |
| {0, 0, 0}, |
| {0, 0, 0}, |
| {0, 0, 0}, |
| {0, 0, 0}, |
| } |
| |
| for by := 0; by < blockHeight; by++ { |
| for bx := 0; bx < blockWidth; bx++ { |
| c[0][2] = bs.Read(5) << 3 |
| c[0][1] = bs.Read(5) << 3 |
| c[0][0] = bs.Read(5) << 3 |
| alt := bs.ReadBit() != 0 |
| c[3][2] = bs.Read(5) << 3 |
| c[3][1] = bs.Read(6) << 2 |
| c[3][0] = bs.Read(5) << 3 |
| for i := 0; i < 3; i++ { |
| if alt { |
| c[2][i] = c[0][i] |
| c[1][i] = c[0][i] - c[3][i]/4 |
| c[0][i] = 0 |
| } else { |
| c[1][i] = (c[0][i]*2 + c[3][i]*1) / 3 |
| c[2][i] = (c[0][i]*1 + c[3][i]*2) / 3 |
| } |
| } |
| for y := by * 4; y < (by+1)*4; y++ { |
| for x := bx * 4; x < (bx+1)*4; x++ { |
| idx := bs.Read(2) |
| if x < width && y < height { |
| j = 4 * (y*width + x) |
| dst[j+0] = uint8(c[idx][0]) |
| dst[j+1] = uint8(c[idx][1]) |
| dst[j+2] = uint8(c[idx][2]) |
| dst[j+3] = 255 |
| } |
| } |
| } |
| } |
| } |
| |
| return dst, nil |
| }) |
| |
| image.RegisterConverter(image.ATC_RGBA_EXPLICIT_ALPHA_AMD(), image.RGBA(), |
| func(src []byte, width, height int) ([]byte, error) { |
| dst, j := make([]byte, width*height*4), 0 |
| |
| blockWidth := sint.Max(width/4, 1) |
| blockHeight := sint.Max(height/4, 1) |
| |
| bs := binary.BitStream{Data: src} |
| |
| a := [16]uint8{ |
| 0, 0, 0, 0, |
| 0, 0, 0, 0, |
| 0, 0, 0, 0, |
| 0, 0, 0, 0, |
| } |
| |
| c := [4][3]uint32{ |
| {0, 0, 0}, |
| {0, 0, 0}, |
| {0, 0, 0}, |
| {0, 0, 0}, |
| } |
| |
| for by := 0; by < blockHeight; by++ { |
| for bx := 0; bx < blockWidth; bx++ { |
| for i := 0; i < 16; i++ { |
| a[i] = uint8(bs.Read(4) << 4) |
| } |
| c[0][2] = bs.Read(5) << 3 |
| c[0][1] = bs.Read(5) << 3 |
| c[0][0] = bs.Read(5) << 3 |
| bs.ReadBit() |
| c[3][2] = bs.Read(5) << 3 |
| c[3][1] = bs.Read(6) << 2 |
| c[3][0] = bs.Read(5) << 3 |
| for i := 0; i < 3; i++ { |
| c[1][i] = (c[0][i]*2 + c[3][i]*1) / 3 |
| c[2][i] = (c[0][i]*1 + c[3][i]*2) / 3 |
| } |
| p := 0 |
| for y := by * 4; y < (by+1)*4; y++ { |
| for x := bx * 4; x < (bx+1)*4; x++ { |
| idx := bs.Read(2) |
| if x < width && y < height { |
| j = 4 * (y*width + x) |
| dst[j+0] = uint8(c[idx][0]) |
| dst[j+1] = uint8(c[idx][1]) |
| dst[j+2] = uint8(c[idx][2]) |
| dst[j+3] = a[p] |
| p++ |
| } |
| } |
| } |
| } |
| } |
| |
| return dst, nil |
| }) |
| |
| image.RegisterConverter(image.ATC_RGBA_INTERPOLATED_ALPHA_AMD(), image.RGBA(), |
| func(src []byte, width, height int) ([]byte, error) { |
| dst, j := make([]byte, width*height*4), 0 |
| |
| blockWidth := sint.Max(width/4, 1) |
| blockHeight := sint.Max(height/4, 1) |
| |
| bs := binary.BitStream{Data: src} |
| |
| t := [8]uint8{} |
| |
| a := [16]uint8{ |
| 0, 0, 0, 0, |
| 0, 0, 0, 0, |
| 0, 0, 0, 0, |
| 0, 0, 0, 0, |
| } |
| |
| c := [4][3]uint32{ |
| {0, 0, 0}, |
| {0, 0, 0}, |
| {0, 0, 0}, |
| {0, 0, 0}, |
| } |
| |
| for by := 0; by < blockHeight; by++ { |
| for bx := 0; bx < blockWidth; bx++ { |
| t0 := uint(bs.Read(8)) |
| t1 := uint(bs.Read(8)) |
| t[0] = uint8(t0) |
| t[1] = uint8(t1) |
| |
| if t0 > t1 { |
| t[2] = uint8((6*t0 + 1*t1) / 7) |
| t[3] = uint8((5*t0 + 2*t1) / 7) |
| t[4] = uint8((4*t0 + 3*t1) / 7) |
| t[5] = uint8((3*t0 + 4*t1) / 7) |
| t[6] = uint8((2*t0 + 5*t1) / 7) |
| t[7] = uint8((1*t0 + 6*t1) / 7) |
| } else { |
| t[2] = uint8((4*t0 + 1*t1) / 5) |
| t[3] = uint8((3*t0 + 2*t1) / 5) |
| t[4] = uint8((2*t0 + 3*t1) / 5) |
| t[5] = uint8((1*t0 + 3*t1) / 5) |
| t[6] = 0 |
| t[7] = 255 |
| } |
| |
| for i := range a { |
| a[i] = t[bs.Read(3)] |
| } |
| |
| c[0][2] = bs.Read(5) << 3 |
| c[0][1] = bs.Read(5) << 3 |
| c[0][0] = bs.Read(5) << 3 |
| bs.ReadBit() |
| c[3][2] = bs.Read(5) << 3 |
| c[3][1] = bs.Read(6) << 2 |
| c[3][0] = bs.Read(5) << 3 |
| for i := 0; i < 3; i++ { |
| c[1][i] = (c[0][i]*2 + c[3][i]*1) / 3 |
| c[2][i] = (c[0][i]*1 + c[3][i]*2) / 3 |
| } |
| p := 0 |
| for y := by * 4; y < (by+1)*4; y++ { |
| for x := bx * 4; x < (bx+1)*4; x++ { |
| idx := bs.Read(2) |
| if x < width && y < height { |
| j = 4 * (y*width + x) |
| dst[j+0] = uint8(c[idx][0]) |
| dst[j+1] = uint8(c[idx][1]) |
| dst[j+2] = uint8(c[idx][2]) |
| dst[j+3] = a[p] |
| p++ |
| } |
| } |
| } |
| } |
| } |
| |
| return dst, nil |
| }) |
| } |