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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/plugins/ppapi/ppb_audio_impl.h"
#include "base/logging.h"
#include "media/audio/audio_output_controller.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/ppb_audio.h"
#include "ppapi/c/ppb_audio_config.h"
#include "ppapi/c/trusted/ppb_audio_trusted.h"
#include "ppapi/shared_impl/resource_tracker.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_audio_config_api.h"
#include "ppapi/thunk/thunk.h"
#include "webkit/plugins/ppapi/common.h"
#include "webkit/plugins/ppapi/resource_helper.h"
using ppapi::PpapiGlobals;
using ppapi::thunk::EnterResourceNoLock;
using ppapi::thunk::PPB_Audio_API;
using ppapi::thunk::PPB_AudioConfig_API;
using ppapi::TrackedCallback;
namespace webkit {
namespace ppapi {
// PPB_Audio_Impl --------------------------------------------------------------
PPB_Audio_Impl::PPB_Audio_Impl(PP_Instance instance)
: Resource(::ppapi::OBJECT_IS_IMPL, instance),
audio_(NULL) {
}
PPB_Audio_Impl::~PPB_Audio_Impl() {
// Calling ShutDown() makes sure StreamCreated cannot be called anymore and
// releases the audio data associated with the pointer. Note however, that
// until ShutDown returns, StreamCreated may still be called. This will be
// OK since we'll just immediately clean up the data it stored later in this
// destructor.
if (audio_) {
audio_->ShutDown();
audio_ = NULL;
}
}
// static
PP_Resource PPB_Audio_Impl::Create(PP_Instance instance,
PP_Resource config,
PPB_Audio_Callback audio_callback,
void* user_data) {
scoped_refptr<PPB_Audio_Impl> audio(new PPB_Audio_Impl(instance));
if (!audio->Init(config, audio_callback, user_data))
return 0;
CHECK(media::AudioOutputController::kPauseMark ==
::ppapi::PPB_Audio_Shared::kPauseMark);
return audio->GetReference();
}
PPB_Audio_API* PPB_Audio_Impl::AsPPB_Audio_API() {
return this;
}
bool PPB_Audio_Impl::Init(PP_Resource config,
PPB_Audio_Callback callback, void* user_data) {
// Validate the config and keep a reference to it.
EnterResourceNoLock<PPB_AudioConfig_API> enter(config, true);
if (enter.failed())
return false;
config_ = config;
if (!callback)
return false;
SetCallback(callback, user_data);
PluginDelegate* plugin_delegate = ResourceHelper::GetPluginDelegate(this);
if (!plugin_delegate)
return false;
// When the stream is created, we'll get called back on StreamCreated().
CHECK(!audio_);
audio_ = plugin_delegate->CreateAudioOutput(
enter.object()->GetSampleRate(), enter.object()->GetSampleFrameCount(),
this);
return audio_ != NULL;
}
PP_Resource PPB_Audio_Impl::GetCurrentConfig() {
// AddRef on behalf of caller, while keeping a ref for ourselves.
PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(config_);
return config_;
}
PP_Bool PPB_Audio_Impl::StartPlayback() {
if (!audio_)
return PP_FALSE;
if (playing())
return PP_TRUE;
SetStartPlaybackState();
return BoolToPPBool(audio_->StartPlayback());
}
PP_Bool PPB_Audio_Impl::StopPlayback() {
if (!audio_)
return PP_FALSE;
if (!playing())
return PP_TRUE;
if (!audio_->StopPlayback())
return PP_FALSE;
SetStopPlaybackState();
return PP_TRUE;
}
int32_t PPB_Audio_Impl::OpenTrusted(
PP_Resource config,
scoped_refptr<TrackedCallback> create_callback) {
// Validate the config and keep a reference to it.
EnterResourceNoLock<PPB_AudioConfig_API> enter(config, true);
if (enter.failed())
return PP_ERROR_FAILED;
config_ = config;
PluginDelegate* plugin_delegate = ResourceHelper::GetPluginDelegate(this);
if (!plugin_delegate)
return PP_ERROR_FAILED;
// When the stream is created, we'll get called back on StreamCreated().
DCHECK(!audio_);
audio_ = plugin_delegate->CreateAudioOutput(
enter.object()->GetSampleRate(), enter.object()->GetSampleFrameCount(),
this);
if (!audio_)
return PP_ERROR_FAILED;
// At this point, we are guaranteeing ownership of the completion
// callback. Audio promises to fire the completion callback
// once and only once.
SetCreateCallback(create_callback);
return PP_OK_COMPLETIONPENDING;
}
int32_t PPB_Audio_Impl::GetSyncSocket(int* sync_socket) {
return GetSyncSocketImpl(sync_socket);
}
int32_t PPB_Audio_Impl::GetSharedMemory(int* shm_handle,
uint32_t* shm_size) {
return GetSharedMemoryImpl(shm_handle, shm_size);
}
void PPB_Audio_Impl::OnSetStreamInfo(
base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size,
base::SyncSocket::Handle socket_handle) {
SetStreamInfo(pp_instance(), shared_memory_handle, shared_memory_size,
socket_handle);
}
} // namespace ppapi
} // namespace webkit
|