1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
// 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.
#include "ui/gfx/codec/webp_codec.h"
#include <vector>
#include "base/feature_list.h"
#include "ui/gfx/codec/vector_wstream.h"
BASE_FEATURE(kUseLosslessWebPCompression,
"UseLosslessWebPCompression",
base::FEATURE_ENABLED_BY_DEFAULT);
namespace gfx {
// Encoder ---------------------------------------------------------------------
namespace {
std::optional<std::vector<uint8_t>> PixmapEncode(const SkPixmap& input,
int quality) {
std::vector<uint8_t> output;
VectorWStream dst(&output);
SkWebpEncoder::Options options;
options.fQuality = quality;
bool use_lossless_webp = quality >= 100 && base::FeatureList::IsEnabled(
kUseLosslessWebPCompression);
options.fCompression = use_lossless_webp
? SkWebpEncoder::Compression::kLossless
: SkWebpEncoder::Compression::kLossy;
if (!SkWebpEncoder::Encode(&dst, input, options)) {
return std::nullopt;
}
return output;
}
} // namespace
std::optional<std::vector<uint8_t>> WebpCodec::Encode(const SkBitmap& src,
int quality) {
SkPixmap pixmap;
if (!src.peekPixels(&pixmap)) {
return std::nullopt;
}
return PixmapEncode(pixmap, quality);
}
std::optional<std::vector<uint8_t>> WebpCodec::EncodeAnimated(
const std::vector<SkEncoder::Frame>& frames,
const SkWebpEncoder::Options& options) {
std::vector<uint8_t> output;
VectorWStream dst(&output);
if (!SkWebpEncoder::EncodeAnimated(&dst, frames, options)) {
return std::nullopt;
}
return output;
}
std::optional<std::vector<uint8_t>> WebpCodec::EncodeAnimated(
const std::vector<Frame>& frames,
const SkWebpEncoder::Options& options) {
std::vector<SkEncoder::Frame> pixmap_frames;
for (const auto& frame : frames) {
SkEncoder::Frame pixmap_frame;
if (!frame.bitmap.peekPixels(&pixmap_frame.pixmap)) {
return std::nullopt;
}
pixmap_frame.duration = frame.duration;
pixmap_frames.push_back(pixmap_frame);
}
return WebpCodec::EncodeAnimated(pixmap_frames, options);
}
} // namespace gfx
|
