skia2/include/core/SkPackBits.h
epoger@google.com ec3ed6a5eb Automatic update of all copyright notices to reflect new license terms.
I have manually examined all of these diffs and restored a few files that
seem to require manual adjustment.

The following files still need to be modified manually, in a separate CL:

android_sample/SampleApp/AndroidManifest.xml
android_sample/SampleApp/res/layout/layout.xml
android_sample/SampleApp/res/menu/sample.xml
android_sample/SampleApp/res/values/strings.xml
android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java
android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java
experimental/CiCarbonSampleMain.c
experimental/CocoaDebugger/main.m
experimental/FileReaderApp/main.m
experimental/SimpleCocoaApp/main.m
experimental/iOSSampleApp/Shared/SkAlertPrompt.h
experimental/iOSSampleApp/Shared/SkAlertPrompt.m
experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig
experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig
experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig
gpu/src/android/GrGLDefaultInterface_android.cpp
gyp/common.gypi
gyp_skia
include/ports/SkHarfBuzzFont.h
include/views/SkOSWindow_wxwidgets.h
make.bat
make.py
src/opts/memset.arm.S
src/opts/memset16_neon.S
src/opts/memset32_neon.S
src/opts/opts_check_arm.cpp
src/ports/SkDebug_brew.cpp
src/ports/SkMemory_brew.cpp
src/ports/SkOSFile_brew.cpp
src/ports/SkXMLParser_empty.cpp
src/utils/ios/SkImageDecoder_iOS.mm
src/utils/ios/SkOSFile_iOS.mm
src/utils/ios/SkStream_NSData.mm
tests/FillPathTest.cpp
Review URL: http://codereview.appspot.com/4816058

git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00

80 lines
3.3 KiB
C++

/*
* Copyright 2008 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPackBits_DEFINED
#define SkPackBits_DEFINED
#include "SkTypes.h"
class SkPackBits {
public:
/** Given the number of 16bit values that will be passed to Pack16,
returns the worst-case size needed for the dst[] buffer.
*/
static size_t ComputeMaxSize16(int count);
/** Given the number of 8bit values that will be passed to Pack8,
returns the worst-case size needed for the dst[] buffer.
*/
static size_t ComputeMaxSize8(int count);
/** Write the src array into a packed format. The packing process may end
up writing more bytes than it read, so dst[] must be large enough.
@param src Input array of 16bit values
@param count Number of entries in src[]
@param dst Buffer (allocated by caller) to write the packed data
into
@return the number of bytes written to dst[]
*/
static size_t Pack16(const uint16_t src[], int count, uint8_t dst[]);
/** Write the src array into a packed format. The packing process may end
up writing more bytes than it read, so dst[] must be large enough.
@param src Input array of 8bit values
@param count Number of entries in src[]
@param dst Buffer (allocated by caller) to write the packed data
into
@return the number of bytes written to dst[]
*/
static size_t Pack8(const uint8_t src[], int count, uint8_t dst[]);
/** Unpack the data in src[], and expand it into dst[]. The src[] data was
written by a previous call to Pack16.
@param src Input data to unpack, previously created by Pack16.
@param srcSize Number of bytes of src to unpack
@param dst Buffer (allocated by caller) to expand the src[] into.
@return the number of dst elements (not bytes) written into dst.
*/
static int Unpack16(const uint8_t src[], size_t srcSize, uint16_t dst[]);
/** Unpack the data in src[], and expand it into dst[]. The src[] data was
written by a previous call to Pack8.
@param src Input data to unpack, previously created by Pack8.
@param srcSize Number of bytes of src to unpack
@param dst Buffer (allocated by caller) to expand the src[] into.
@return the number of bytes written into dst.
*/
static int Unpack8(const uint8_t src[], size_t srcSize, uint8_t dst[]);
/** Unpack the data from src[], skip the first dstSkip bytes, then write
dstWrite bytes into dst[]. The src[] data was written by a previous
call to Pack8. Return the number of bytes actually writtten into dst[]
@param src Input data to unpack, previously created by Pack8.
@param dst Buffer (allocated by caller) to expand the src[] into.
@param dstSkip Number of bytes of unpacked src to skip before writing
into dst
@param dstWrite Number of bytes of unpacked src to write into dst (after
skipping dstSkip bytes)
*/
static void Unpack8(uint8_t dst[], size_t dstSkip, size_t dstWrite,
const uint8_t src[]);
};
#endif