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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_CODEC_WEBP_CODEC_H_
#define UI_GFX_CODEC_WEBP_CODEC_H_
#include <optional>
#include <vector>
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkPixmap.h"
#include "third_party/skia/include/encode/SkEncoder.h"
#include "third_party/skia/include/encode/SkWebpEncoder.h"
#include "ui/gfx/codec/codec_export.h"
class SkBitmap;
namespace gfx {
class Size;
// Interface for encoding WebP data. This is currently only used
// in the devtools protocol to encode screenshots, so currently only minimally
// supports lossy encoding.
class CODEC_EXPORT WebpCodec {
public:
struct CODEC_EXPORT Frame {
// Bitmap of the frame.
SkBitmap bitmap;
// Duration of the frame in milliseconds.
int duration;
};
WebpCodec(const WebpCodec&) = delete;
WebpCodec& operator=(const WebpCodec&) = delete;
// Encodes (lossy) the `input` bitmap.
//
// Returns the encoded data on success, or std::nullopt on failure.
//
// quality: an integer in the range 0-100, where 100 is the highest quality.
// Since this currently only supports lossy encoding, a higher
// quality means a higher visual quality.
static std::optional<std::vector<uint8_t>> Encode(const SkBitmap& input,
int quality);
// Encodes the pixmap 'frames' as an animated WebP image. Returns the encoded
// data on success, or std::nullopt on failure.
static std::optional<std::vector<uint8_t>> EncodeAnimated(
const std::vector<SkEncoder::Frame>& frames,
const SkWebpEncoder::Options& options);
// Encodes the bitmap 'frames' as an animated WebP image. Returns the encoded
// data on success, or std::nullopt on failure.
static std::optional<std::vector<uint8_t>> EncodeAnimated(
const std::vector<Frame>& frames,
const SkWebpEncoder::Options& options);
};
} // namespace gfx
#endif // UI_GFX_CODEC_WEBP_CODEC_H_
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