reed@google.com | f309dbc | 2013-12-09 22:09:41 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkImageInfo.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 9 | #include "SkReadBuffer.h" |
| 10 | #include "SkWriteBuffer.h" |
reed@google.com | f309dbc | 2013-12-09 22:09:41 +0000 | [diff] [blame] | 11 | |
commit-bot@chromium.org | ef74fa1 | 2013-12-17 20:49:46 +0000 | [diff] [blame] | 12 | static bool alpha_type_is_valid(SkAlphaType alphaType) { |
| 13 | return (alphaType >= 0) && (alphaType <= kLastEnum_SkAlphaType); |
| 14 | } |
| 15 | |
| 16 | static bool color_type_is_valid(SkColorType colorType) { |
| 17 | return (colorType >= 0) && (colorType <= kLastEnum_SkColorType); |
| 18 | } |
| 19 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 20 | void SkImageInfo::unflatten(SkReadBuffer& buffer) { |
reed@google.com | f309dbc | 2013-12-09 22:09:41 +0000 | [diff] [blame] | 21 | fWidth = buffer.read32(); |
| 22 | fHeight = buffer.read32(); |
| 23 | |
| 24 | uint32_t packed = buffer.read32(); |
| 25 | SkASSERT(0 == (packed >> 16)); |
| 26 | fAlphaType = (SkAlphaType)((packed >> 8) & 0xFF); |
| 27 | fColorType = (SkColorType)((packed >> 0) & 0xFF); |
commit-bot@chromium.org | ef74fa1 | 2013-12-17 20:49:46 +0000 | [diff] [blame] | 28 | buffer.validate(alpha_type_is_valid(fAlphaType) && |
| 29 | color_type_is_valid(fColorType)); |
reed@google.com | f309dbc | 2013-12-09 22:09:41 +0000 | [diff] [blame] | 30 | } |
| 31 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 32 | void SkImageInfo::flatten(SkWriteBuffer& buffer) const { |
reed@google.com | f309dbc | 2013-12-09 22:09:41 +0000 | [diff] [blame] | 33 | buffer.write32(fWidth); |
| 34 | buffer.write32(fHeight); |
| 35 | |
| 36 | SkASSERT(0 == (fAlphaType & ~0xFF)); |
| 37 | SkASSERT(0 == (fColorType & ~0xFF)); |
| 38 | uint32_t packed = (fAlphaType << 8) | fColorType; |
| 39 | buffer.write32(packed); |
| 40 | } |