skia2/include/encode/SkWebpEncoder.h
Mike Klein 4bf6fd68db Revert "add runtime registration for encoders"
This reverts commit 940c3f136d.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> add runtime registration for encoders
> 
> If we want to make these external dependencies mix-and-match in Google3,
> we'll need to group together the encoders and decoders, everything that
> dependends on each external library.
> 
> I was tempted to try to remove these generic encoder entrypoints and
> replace them with calls to the direct equivalents, but I'm not sure
> that's necessary.  I think we can just register encoders like decoders.
> 
> Change-Id: I41d2d1bb3ceb1daafa62c95d345eb6a70249be75
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/213880
> Commit-Queue: Mike Klein <mtklein@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>

TBR=mtklein@google.com,scroggo@google.com,brianosman@google.com

Change-Id: I3ee9353ca6b3c6c11feba0503b672d8986a347be
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/214107
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2019-05-15 22:02:39 +00:00

49 lines
1.5 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkWebpEncoder_DEFINED
#define SkWebpEncoder_DEFINED
#include "include/encode/SkEncoder.h"
class SkWStream;
namespace SkWebpEncoder {
enum class Compression {
kLossy,
kLossless,
};
struct SK_API Options {
/**
* |fCompression| determines whether we will use webp lossy or lossless compression.
*
* |fQuality| must be in [0.0f, 100.0f].
* If |fCompression| is kLossy, |fQuality| corresponds to the visual quality of the
* encoding. Decreasing the quality will result in a smaller encoded image.
* If |fCompression| is kLossless, |fQuality| corresponds to the amount of effort
* put into the encoding. Lower values will compress faster into larger files,
* while larger values will compress slower into smaller files.
*
* This scheme is designed to match the libwebp API.
*/
Compression fCompression = Compression::kLossy;
float fQuality = 100.0f;
};
/**
* Encode the |src| pixels to the |dst| stream.
* |options| may be used to control the encoding behavior.
*
* Returns true on success. Returns false on an invalid or unsupported |src|.
*/
SK_API bool Encode(SkWStream* dst, const SkPixmap& src, const Options& options);
}
#endif