File: fake_mjpeg_decode_accelerator.h

package info (click to toggle)
chromium 138.0.7204.157-1
  • links: PTS, VCS
  • area: main
  • in suites: sid, trixie
  • size: 6,071,864 kB
  • sloc: cpp: 34,936,859; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,967; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (77 lines) | stat: -rw-r--r-- 2,768 bytes parent folder | download | duplicates (4)
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
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_CHROMEOS_CAMERA_FAKE_MJPEG_DECODE_ACCELERATOR_H_
#define COMPONENTS_CHROMEOS_CAMERA_FAKE_MJPEG_DECODE_ACCELERATOR_H_

#include <stdint.h>

#include "base/memory/raw_ptr.h"
#include "base/memory/shared_memory_mapping.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread.h"
#include "components/chromeos_camera/mjpeg_decode_accelerator.h"
#include "media/base/bitstream_buffer.h"

namespace base {
class SingleThreadTaskRunner;
}

namespace chromeos_camera {

// Uses software-based decoding. The purpose of this class is to enable testing
// of communication to the MjpegDecodeAccelerator without requiring an actual
// hardware decoder.
class FakeMjpegDecodeAccelerator : public MjpegDecodeAccelerator {
 public:
  FakeMjpegDecodeAccelerator(
      const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);

  FakeMjpegDecodeAccelerator(const FakeMjpegDecodeAccelerator&) = delete;
  FakeMjpegDecodeAccelerator& operator=(const FakeMjpegDecodeAccelerator&) =
      delete;

  ~FakeMjpegDecodeAccelerator() override;

  // MjpegDecodeAccelerator implementation.
  void InitializeAsync(chromeos_camera::MjpegDecodeAccelerator::Client* client,
                       InitCB init_cb) override;
  void Decode(media::BitstreamBuffer bitstream_buffer,
              scoped_refptr<media::VideoFrame> video_frame) override;
  void Decode(int32_t task_id,
              base::ScopedFD src_dmabuf_fd,
              size_t src_size,
              off_t src_offset,
              scoped_refptr<media::VideoFrame> dst_frame) override;
  bool IsSupported() override;

 private:
  void DecodeOnDecoderThread(int32_t task_id,
                             scoped_refptr<media::VideoFrame> video_frame,
                             base::WritableSharedMemoryMapping src_shm_mapping);
  void NotifyError(int32_t task_id, Error error);
  void NotifyErrorOnClientThread(int32_t task_id, Error error);
  void OnDecodeDoneOnClientThread(int32_t task_id);

  void InitializeOnTaskRunner(
      chromeos_camera::MjpegDecodeAccelerator::Client* client,
      InitCB init_cb);

  // Task runner for calls to |client_|.
  const scoped_refptr<base::SingleThreadTaskRunner> client_task_runner_;

  // GPU IO task runner.
  const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;

  raw_ptr<Client> client_ = nullptr;

  base::Thread decoder_thread_;
  scoped_refptr<base::SingleThreadTaskRunner> decoder_task_runner_;

  base::WeakPtrFactory<FakeMjpegDecodeAccelerator> weak_factory_{this};
};

}  // namespace chromeos_camera

#endif  // COMPONENTS_CHROMEOS_CAMERA_FAKE_MJPEG_DECODE_ACCELERATOR_H_