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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_COMPONENTS_CDM_FACTORY_DAEMON_REMOTE_CDM_CONTEXT_H_
#define CHROMEOS_COMPONENTS_CDM_FACTORY_DAEMON_REMOTE_CDM_CONTEXT_H_
#include <memory>
#include "base/component_export.h"
#include "base/memory/ref_counted.h"
#include "chromeos/components/cdm_factory_daemon/chromeos_cdm_context.h"
#include "media/base/cdm_context.h"
#include "media/base/decryptor.h"
#include "media/mojo/mojom/cdm_context_for_oopvd.mojom.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
namespace chromeos {
// Provides the implementation that runs in out of process video decoding that
// proxies the media::CdmContext calls back through a mojom::CdmContextForOOPVD
// IPC connection.
//
// This particular media::CdmContext/chromeos::ChromeOsCdmContext implementation
// has some threading restrictions: after construction, all methods should be
// called on the same sequence unless otherwise noted (in particular, it's safe
// to release the last reference to a RemoteCdmContext on any sequence because
// we guarantee that sequence-affine state is destroyed on the correct
// sequence).
class COMPONENT_EXPORT(CDM_FACTORY_DAEMON) RemoteCdmContext
: public media::CdmContext,
public ChromeOsCdmContext,
public media::Decryptor,
public base::RefCountedThreadSafe<RemoteCdmContext> {
public:
explicit RemoteCdmContext(
mojo::PendingRemote<media::mojom::CdmContextForOOPVD>
cdm_context_for_oopvd);
RemoteCdmContext(const RemoteCdmContext&) = delete;
RemoteCdmContext& operator=(const RemoteCdmContext&) = delete;
// media::CdmContext:
std::unique_ptr<media::CallbackRegistration> RegisterEventCB(
EventCB event_cb) override;
media::Decryptor* GetDecryptor() override;
// GetChromeOsCdmContext() may be called on any sequence.
ChromeOsCdmContext* GetChromeOsCdmContext() override;
// chromeos::ChromeOsCdmContext:
void GetHwKeyData(const media::DecryptConfig* decrypt_config,
const std::vector<uint8_t>& hw_identifier,
GetHwKeyDataCB callback) override;
void GetHwConfigData(GetHwConfigDataCB callback) override;
void GetScreenResolutions(GetScreenResolutionsCB callback) override;
// GetCdmContextRef() may be called on any sequence.
std::unique_ptr<media::CdmContextRef> GetCdmContextRef() override;
// UsingArcCdm() may be called on any sequence.
bool UsingArcCdm() const override;
// IsRemoteCdm() may be called on any sequence.
bool IsRemoteCdm() const override;
void AllocateSecureBuffer(uint32_t size,
AllocateSecureBufferCB callback) override;
void ParseEncryptedSliceHeader(uint64_t secure_handle,
uint32_t offset,
const std::vector<uint8_t>& stream_data,
ParseEncryptedSliceHeaderCB callback) override;
// media::Decryptor:
void Decrypt(StreamType stream_type,
scoped_refptr<media::DecoderBuffer> encrypted,
DecryptCB decrypt_cb) override;
void CancelDecrypt(StreamType stream_type) override;
void InitializeAudioDecoder(const media::AudioDecoderConfig& config,
DecoderInitCB init_cb) override;
void InitializeVideoDecoder(const media::VideoDecoderConfig& config,
DecoderInitCB init_cb) override;
void DecryptAndDecodeAudio(scoped_refptr<media::DecoderBuffer> encrypted,
AudioDecodeCB audio_decode_cb) override;
void DecryptAndDecodeVideo(scoped_refptr<media::DecoderBuffer> encrypted,
VideoDecodeCB video_decode_cb) override;
void ResetDecoder(StreamType stream_type) override;
void DeinitializeDecoder(StreamType stream_type) override;
bool CanAlwaysDecrypt() override;
private:
friend class base::RefCountedThreadSafe<RemoteCdmContext>;
// MojoSequenceState encapsulates sequence-affine state that is initialized
// lazily. The custom deleter for |mojo_sequence_state_| guarantees that this
// state is destroyed on the correct sequence.
class MojoSequenceState;
~RemoteCdmContext() override;
void OnDecryptVideoBufferDone(DecryptCB decrypt_cb,
media::Decryptor::Status status,
media::mojom::DecoderBufferPtr decoder_buffer,
const std::vector<uint8_t>& bytes);
std::unique_ptr<MojoSequenceState, void (*)(MojoSequenceState*)>
mojo_sequence_state_;
};
} // namespace chromeos
#endif // CHROMEOS_COMPONENTS_CDM_FACTORY_DAEMON_REMOTE_CDM_CONTEXT_H_
|
