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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkTextureCompressor_DEFINED | 8 #ifndef SkTextureCompressor_DEFINED |
9 #define SkTextureCompressor_DEFINED | 9 #define SkTextureCompressor_DEFINED |
10 | 10 |
11 #include "SkImageInfo.h" | 11 #include "SkImageInfo.h" |
12 | 12 |
13 class SkBitmap; | 13 class SkBitmap; |
14 class SkData; | 14 class SkData; |
15 | 15 |
16 namespace SkTextureCompressor { | 16 namespace SkTextureCompressor { |
17 // Various texture compression formats that we support. | 17 // Various texture compression formats that we support. |
18 enum Format { | 18 enum Format { |
19 // Alpha only format. | 19 // Alpha only formats. |
20 kLATC_Format, | 20 kLATC_Format, |
| 21 kR11_EAC_Format, |
21 | 22 |
22 kLast_Format = kLATC_Format | 23 kLast_Format = kR11_EAC_Format |
23 }; | 24 }; |
24 static const int kFormatCnt = kLast_Format + 1; | 25 static const int kFormatCnt = kLast_Format + 1; |
25 | 26 |
26 // Returns an SkData holding a blob of compressed data that corresponds | 27 // Returns an SkData holding a blob of compressed data that corresponds |
27 // to the bitmap. If the bitmap colorType cannot be compressed using the | 28 // to the bitmap. If the bitmap colorType cannot be compressed using the |
28 // associated format, then we return NULL. The caller is responsible for | 29 // associated format, then we return NULL. The caller is responsible for |
29 // calling unref() on the returned data. | 30 // calling unref() on the returned data. |
30 SkData* CompressBitmapToFormat(const SkBitmap& bitmap, Format format); | 31 SkData* CompressBitmapToFormat(const SkBitmap& bitmap, Format format); |
31 | 32 |
32 // Compresses the given src data into dst. The src data is assumed to be | 33 // Compresses the given src data into dst. The src data is assumed to be |
33 // large enough to hold width*height pixels. The dst data is expected to | 34 // large enough to hold width*height pixels. The dst data is expected to |
34 // be large enough to hold the compressed data according to the format. | 35 // be large enough to hold the compressed data according to the format. |
35 bool CompressBufferToFormat(uint8_t* dst, const uint8_t* src, SkColorType sr
cColorType, | 36 bool CompressBufferToFormat(uint8_t* dst, const uint8_t* src, SkColorType sr
cColorType, |
36 int width, int height, int rowBytes, Format form
at); | 37 int width, int height, int rowBytes, Format form
at); |
37 } | 38 } |
38 | 39 |
39 #endif | 40 #endif |
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