skia2/include/core/SkImageEncoder.h
Mike Reed ac9f0c9e27 Bitmap.asImage()
... and lots and lots of IWYU

Change-Id: Ie5157dcdd2e6d29b95c71b39153278ab48ef4eb3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/346778
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2020-12-23 15:54:57 +00:00

73 lines
2.4 KiB
C++

/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkImageEncoder_DEFINED
#define SkImageEncoder_DEFINED
// TODO: update clients so we can remove this include, they should IWYU
#include "include/core/SkBitmap.h"
#include "include/core/SkData.h"
#include "include/core/SkEncodedImageFormat.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkStream.h"
class SkBitmap;
/**
* Encode SkPixmap in the given binary image format.
*
* @param dst results are written to this stream.
* @param src source pixels.
* @param format image format, not all formats are supported.
* @param quality range from 0-100, this is supported by jpeg and webp.
* higher values correspond to improved visual quality, but less compression.
*
* @return false iff input is bad or format is unsupported.
*
* Will always return false if Skia is compiled without image
* encoders.
*
* For SkEncodedImageFormat::kWEBP, if quality is 100, it will use lossless compression. Otherwise
* it will use lossy.
*
* For examples of encoding an image to a file or to a block of memory,
* see tools/ToolUtils.h.
*/
SK_API bool SkEncodeImage(SkWStream* dst, const SkPixmap& src,
SkEncodedImageFormat format, int quality);
/**
* The following helper function wraps SkEncodeImage().
*/
SK_API bool SkEncodeImage(SkWStream* dst, const SkBitmap& src, SkEncodedImageFormat f, int q);
/**
* Encode SkPixmap in the given binary image format.
*
* @param src source pixels.
* @param format image format, not all formats are supported.
* @param quality range from 0-100, this is supported by jpeg and webp.
* higher values correspond to improved visual quality, but less compression.
*
* @return encoded data or nullptr if input is bad or format is unsupported.
*
* Will always return nullptr if Skia is compiled without image
* encoders.
*
* For SkEncodedImageFormat::kWEBP, if quality is 100, it will use lossless compression. Otherwise
* it will use lossy.
*/
SK_API sk_sp<SkData> SkEncodePixmap(const SkPixmap& src, SkEncodedImageFormat format, int quality);
/**
* Helper that extracts the pixmap from the bitmap, and then calls SkEncodePixmap()
*/
SK_API sk_sp<SkData> SkEncodeBitmap(const SkBitmap& src, SkEncodedImageFormat format, int quality);
#endif // SkImageEncoder_DEFINED