skia2/include/images/SkForceLinking.h

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "SkTypes.h"

/**
 *  This function's sole purpose is to trick the linker into not discarding
 *  SkImageDecoder subclasses just because we do not directly call them.
 *  This is necessary in applications that will create image decoders from
 *  a stream.
 *  Call this function with an expression that evaluates to false to ensure
 *  that the linker includes the subclasses.
 *  Passing true will result in leaked objects.
 */
int SkForceLinking(bool doNotPassTrue);

#define __SK_FORCE_IMAGE_DECODER_LINKING       \
SK_UNUSED static int linking_forced = SkForceLinking(false)
Separate core and images project. SkImage calls functions on SkImageDecoder and SkImageEncoder. This is desired behavior, and it is also desired to include SkImage as a part of core. In order to keep core from depending on images, update SkImageDecoder_empty.cpp to implement all of SkImageDecoder and SkImageEncoder. This file will be built by chrome (in https://codereview.chromium.org/15960015). Move force_linking from SkImageDecoder.cpp to its own file. It must be called to force linking with the image decoders if desired. Call the function in tools that need it: sk_image render_pictures render_pdfs sk_hello filter bench_pictures debugger SkImageDecoder: Derive from SkNoncopyable, instead of duplicating its hiding of constructors. skhello: Return rather than trying to write a null SkData to the stream. Revert "Hamfistedly removed core dependence on images" (commit 0f05f682a90bc125323677abf3476e1027d174f5) and "Move SkImage::encode to SkImage_Codec.cpp." (commit 83e47a954d0bf65439f3d9c0c93213063dd70da3.) These two commits were temporary fixes that this change cleans up. SkSnapshot.cpp: Check for a NULL encoder returned by SkImageEncoder::Create. BUG=https://code.google.com/p/skia/issues/detail?id=1275 R=djsollen@google.com, robertphillips@google.com Review URL: https://codereview.chromium.org/15806010 git-svn-id: http://skia.googlecode.com/svn/trunk@9364 2bbb7eff-a529-9590-31e7-b0007b416f81 2013-05-31 14:00:10 +00:00			`/*`
			`* Copyright 2013 Google Inc.`
			`*`
			`* Use of this source code is governed by a BSD-style license that can be`
			`* found in the LICENSE file.`
			`*/`

gn: fix fiddle - __SK_FORCE_IMAGE_DECODER_LINKING makes sure the PNG encoder is linked - updated path to make working with sample draw.cpp easier. No public API changes. TBR=reed@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2202353002 Review-Url: https://codereview.chromium.org/2202353002 2016-08-02 18:13:48 +00:00			`#include "SkTypes.h"`

Separate core and images project. SkImage calls functions on SkImageDecoder and SkImageEncoder. This is desired behavior, and it is also desired to include SkImage as a part of core. In order to keep core from depending on images, update SkImageDecoder_empty.cpp to implement all of SkImageDecoder and SkImageEncoder. This file will be built by chrome (in https://codereview.chromium.org/15960015). Move force_linking from SkImageDecoder.cpp to its own file. It must be called to force linking with the image decoders if desired. Call the function in tools that need it: sk_image render_pictures render_pdfs sk_hello filter bench_pictures debugger SkImageDecoder: Derive from SkNoncopyable, instead of duplicating its hiding of constructors. skhello: Return rather than trying to write a null SkData to the stream. Revert "Hamfistedly removed core dependence on images" (commit 0f05f682a90bc125323677abf3476e1027d174f5) and "Move SkImage::encode to SkImage_Codec.cpp." (commit 83e47a954d0bf65439f3d9c0c93213063dd70da3.) These two commits were temporary fixes that this change cleans up. SkSnapshot.cpp: Check for a NULL encoder returned by SkImageEncoder::Create. BUG=https://code.google.com/p/skia/issues/detail?id=1275 R=djsollen@google.com, robertphillips@google.com Review URL: https://codereview.chromium.org/15806010 git-svn-id: http://skia.googlecode.com/svn/trunk@9364 2bbb7eff-a529-9590-31e7-b0007b416f81 2013-05-31 14:00:10 +00:00			`/**`
			`* This function's sole purpose is to trick the linker into not discarding`
			`* SkImageDecoder subclasses just because we do not directly call them.`
			`* This is necessary in applications that will create image decoders from`
			`* a stream.`
			`* Call this function with an expression that evaluates to false to ensure`
			`* that the linker includes the subclasses.`
			`* Passing true will result in leaked objects.`
			`*/`
			`int SkForceLinking(bool doNotPassTrue);`

			`#define __SK_FORCE_IMAGE_DECODER_LINKING \`
Label some unused static vars as SK_UNUSED Makes my gcc 5.1.1 much happier. R=mtklein@google.com,scroggo@google.com [ mtklein mischief below here ] No public API changes. TBR=reed@google.com Review URL: https://codereview.chromium.org/1170863006 2015-06-10 17:46:50 +00:00			`SK_UNUSED static int linking_forced = SkForceLinking(false)`