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
84
85
86
87
88
89
90
91
92
media / gpu / chromeos / image_processor_factory.h [blame]
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_GPU_CHROMEOS_IMAGE_PROCESSOR_FACTORY_H_
#define MEDIA_GPU_CHROMEOS_IMAGE_PROCESSOR_FACTORY_H_
#include <stdint.h>
#include <memory>
#include <optional>
#include <vector>
#include "base/functional/callback_forward.h"
#include "base/task/sequenced_task_runner.h"
#include "media/gpu/chromeos/fourcc.h"
#include "media/gpu/chromeos/image_processor.h"
#include "media/gpu/media_gpu_export.h"
#include "ui/gfx/geometry/size.h"
namespace media {
class MEDIA_GPU_EXPORT ImageProcessorFactory {
public:
// Callback to pick a valid format from the given |candidates| formats giving
// preference to |preferred_fourcc| if provided.
using PickFormatCB = base::RepeatingCallback<std::optional<Fourcc>(
const std::vector<Fourcc>& /* candidates */,
std::optional<Fourcc> /* preferred_fourcc */)>;
// Factory method to create ImageProcessor.
// Given input and output PortConfig, it tries to find out the most suitable
// ImageProcessor to be used for the current platform.
//
// Returns:
// Most suitable ImageProcessor instance. nullptr if no ImageProcessor
// is available for given parameters on current platform.
static std::unique_ptr<ImageProcessor> Create(
const ImageProcessor::PortConfig& input_config,
const ImageProcessor::PortConfig& output_config,
size_t num_buffers,
ImageProcessor::ErrorCB error_cb,
scoped_refptr<base::SequencedTaskRunner> client_task_runner);
// Factory method to create an ImageProcessor.
// Unlike Create(), the caller passes a list of supported inputs,
// |input_candidates|. It also passes the |input_visible_rect| and the desired
// |output_size|. |out_format_picker| allows us to negotiate the output
// format: we'll call it with a list of supported formats and (possibly) a
// preferred one and the callback picks one. With the rest of the parameters
// the factory can instantiate a suitable ImageProcessor. Returns nullptr if
// an ImageProcessor can't be created.
static std::unique_ptr<ImageProcessor> CreateWithInputCandidates(
const std::vector<ImageProcessor::PixelLayoutCandidate>& input_candidates,
const gfx::Rect& input_visible_rect,
const gfx::Size& output_size,
VideoFrame::StorageType output_storage_type,
size_t num_buffers,
scoped_refptr<base::SequencedTaskRunner> client_task_runner,
PickFormatCB out_format_picker,
ImageProcessor::ErrorCB error_cb);
#if BUILDFLAG(USE_V4L2_CODEC)
static std::unique_ptr<ImageProcessor>
CreateLibYUVImageProcessorWithInputCandidatesForTesting(
const std::vector<ImageProcessor::PixelLayoutCandidate>& input_candidates,
const gfx::Rect& input_visible_rect,
const gfx::Size& output_size,
size_t num_buffers,
scoped_refptr<base::SequencedTaskRunner> client_task_runner,
PickFormatCB out_format_picker,
ImageProcessor::ErrorCB error_cb);
static std::unique_ptr<ImageProcessor>
CreateGLImageProcessorWithInputCandidatesForTesting(
const std::vector<ImageProcessor::PixelLayoutCandidate>& input_candidates,
const gfx::Rect& input_visible_rect,
const gfx::Size& output_size,
size_t num_buffers,
scoped_refptr<base::SequencedTaskRunner> client_task_runner,
PickFormatCB out_format_picker,
ImageProcessor::ErrorCB error_cb);
#endif
ImageProcessorFactory() = delete;
ImageProcessorFactory(const ImageProcessorFactory&) = delete;
ImageProcessorFactory& operator=(const ImageProcessorFactory&) = delete;
};
} // namespace media
#endif // MEDIA_GPU_CHROMEOS_IMAGE_PROCESSOR_FACTORY_H_