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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
// Copyright 2014 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 "ppapi/proxy/media_stream_audio_track_resource.h"
#include "ppapi/proxy/audio_buffer_resource.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/media_stream_audio_track_shared.h"
#include "ppapi/shared_impl/media_stream_buffer.h"
#include "ppapi/shared_impl/var.h"
namespace ppapi {
namespace proxy {
MediaStreamAudioTrackResource::MediaStreamAudioTrackResource(
Connection connection,
PP_Instance instance,
int pending_renderer_id,
const std::string& id)
: MediaStreamTrackResourceBase(
connection, instance, pending_renderer_id, id),
get_buffer_output_(NULL) {
}
MediaStreamAudioTrackResource::~MediaStreamAudioTrackResource() {
Close();
}
thunk::PPB_MediaStreamAudioTrack_API*
MediaStreamAudioTrackResource::AsPPB_MediaStreamAudioTrack_API() {
return this;
}
PP_Var MediaStreamAudioTrackResource::GetId() {
return StringVar::StringToPPVar(id());
}
PP_Bool MediaStreamAudioTrackResource::HasEnded() {
return PP_FromBool(has_ended());
}
int32_t MediaStreamAudioTrackResource::Configure(
const int32_t attrib_list[],
scoped_refptr<TrackedCallback> callback) {
if (has_ended())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(configure_callback_) ||
TrackedCallback::IsPending(get_buffer_callback_)) {
return PP_ERROR_INPROGRESS;
}
// Do not support configure if audio buffers are held by plugin.
if (!buffers_.empty())
return PP_ERROR_INPROGRESS;
MediaStreamAudioTrackShared::Attributes attributes;
int i = 0;
for (; attrib_list[i] != PP_MEDIASTREAMAUDIOTRACK_ATTRIB_NONE; i += 2) {
switch (attrib_list[i]) {
case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_BUFFERS:
attributes.buffers = attrib_list[i + 1];
break;
case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_DURATION:
attributes.duration = attrib_list[i + 1];
break;
case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_SAMPLE_RATE:
case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_SAMPLE_SIZE:
case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_CHANNELS:
return PP_ERROR_NOTSUPPORTED;
default:
return PP_ERROR_BADARGUMENT;
}
}
if (!MediaStreamAudioTrackShared::VerifyAttributes(attributes))
return PP_ERROR_BADARGUMENT;
configure_callback_ = callback;
Call<PpapiPluginMsg_MediaStreamAudioTrack_ConfigureReply>(
RENDERER,
PpapiHostMsg_MediaStreamAudioTrack_Configure(attributes),
base::Bind(&MediaStreamAudioTrackResource::OnPluginMsgConfigureReply,
base::Unretained(this)),
callback);
return PP_OK_COMPLETIONPENDING;
}
int32_t MediaStreamAudioTrackResource::GetAttrib(
PP_MediaStreamAudioTrack_Attrib attrib,
int32_t* value) {
// TODO(penghuang): Implement this function.
return PP_ERROR_NOTSUPPORTED;
}
int32_t MediaStreamAudioTrackResource::GetBuffer(
PP_Resource* buffer,
scoped_refptr<TrackedCallback> callback) {
if (has_ended())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(configure_callback_) ||
TrackedCallback::IsPending(get_buffer_callback_))
return PP_ERROR_INPROGRESS;
*buffer = GetAudioBuffer();
if (*buffer)
return PP_OK;
// TODO(penghuang): Use the callback as hints to determine which thread will
// use the resource, so we could deliver buffers to the target thread directly
// for better performance.
get_buffer_output_ = buffer;
get_buffer_callback_ = callback;
return PP_OK_COMPLETIONPENDING;
}
int32_t MediaStreamAudioTrackResource::RecycleBuffer(PP_Resource buffer) {
BufferMap::iterator it = buffers_.find(buffer);
if (it == buffers_.end())
return PP_ERROR_BADRESOURCE;
scoped_refptr<AudioBufferResource> buffer_resource = it->second;
buffers_.erase(it);
if (has_ended())
return PP_OK;
DCHECK_GE(buffer_resource->GetBufferIndex(), 0);
SendEnqueueBufferMessageToHost(buffer_resource->GetBufferIndex());
buffer_resource->Invalidate();
return PP_OK;
}
void MediaStreamAudioTrackResource::Close() {
if (has_ended())
return;
if (TrackedCallback::IsPending(get_buffer_callback_)) {
*get_buffer_output_ = 0;
get_buffer_callback_->PostAbort();
get_buffer_callback_ = NULL;
get_buffer_output_ = 0;
}
ReleaseBuffers();
MediaStreamTrackResourceBase::CloseInternal();
}
void MediaStreamAudioTrackResource::OnNewBufferEnqueued() {
if (!TrackedCallback::IsPending(get_buffer_callback_))
return;
*get_buffer_output_ = GetAudioBuffer();
int32_t result = *get_buffer_output_ ? PP_OK : PP_ERROR_FAILED;
get_buffer_output_ = NULL;
scoped_refptr<TrackedCallback> callback;
callback.swap(get_buffer_callback_);
callback->Run(result);
}
PP_Resource MediaStreamAudioTrackResource::GetAudioBuffer() {
int32_t index = buffer_manager()->DequeueBuffer();
if (index < 0)
return 0;
MediaStreamBuffer* buffer = buffer_manager()->GetBufferPointer(index);
DCHECK(buffer);
scoped_refptr<AudioBufferResource> resource =
new AudioBufferResource(pp_instance(), index, buffer);
// Add |pp_resource()| and |resource| into |buffers_|.
// |buffers_| uses scoped_ptr<> to hold a ref of |resource|. It keeps the
// resource alive.
buffers_.insert(BufferMap::value_type(resource->pp_resource(), resource));
return resource->GetReference();
}
void MediaStreamAudioTrackResource::ReleaseBuffers() {
for (BufferMap::iterator it = buffers_.begin(); it != buffers_.end(); ++it) {
// Just invalidate and release VideoBufferResorce, but keep PP_Resource.
// So plugin can still use |RecycleBuffer()|.
it->second->Invalidate();
it->second = NULL;
}
}
void MediaStreamAudioTrackResource::OnPluginMsgConfigureReply(
const ResourceMessageReplyParams& params) {
if (TrackedCallback::IsPending(configure_callback_)) {
scoped_refptr<TrackedCallback> callback;
callback.swap(configure_callback_);
callback->Run(params.result());
}
}
} // namespace proxy
} // namespace ppapi
|
