1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
6 #define PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
7 
8 #include <stdint.h>
9 
10 #include <map>
11 #include <string>
12 
13 #include "base/macros.h"
14 #include "base/memory/ref_counted.h"
15 #include "ppapi/proxy/media_stream_track_resource_base.h"
16 #include "ppapi/proxy/ppapi_proxy_export.h"
17 #include "ppapi/thunk/ppb_media_stream_audio_track_api.h"
18 
19 namespace ppapi {
20 namespace proxy {
21 
22 class AudioBufferResource;
23 
24 class PPAPI_PROXY_EXPORT MediaStreamAudioTrackResource
25     : public MediaStreamTrackResourceBase,
26       public thunk::PPB_MediaStreamAudioTrack_API {
27  public:
28   MediaStreamAudioTrackResource(Connection connection,
29                                 PP_Instance instance,
30                                 int pending_renderer_id,
31                                 const std::string& id);
32 
33   ~MediaStreamAudioTrackResource() override;
34 
35   // Resource overrides:
36   thunk::PPB_MediaStreamAudioTrack_API* AsPPB_MediaStreamAudioTrack_API()
37       override;
38 
39   // PPB_MediaStreamAudioTrack_API overrides:
40   PP_Var GetId() override;
41   PP_Bool HasEnded() override;
42   int32_t Configure(const int32_t attrib_list[],
43                     scoped_refptr<TrackedCallback> callback) override;
44   int32_t GetAttrib(PP_MediaStreamAudioTrack_Attrib attrib,
45                     int32_t* value) override;
46   int32_t GetBuffer(PP_Resource* buffer,
47                     scoped_refptr<TrackedCallback> callback) override;
48   int32_t RecycleBuffer(PP_Resource buffer) override;
49   void Close() override;
50 
51   // MediaStreamBufferManager::Delegate overrides:
52   void OnNewBufferEnqueued() override;
53 
54  private:
55   PP_Resource GetAudioBuffer();
56 
57   void ReleaseBuffers();
58 
59   // IPC message handlers.
60   void OnPluginMsgConfigureReply(const ResourceMessageReplyParams& params);
61 
62   // Allocated buffer resources by |GetBuffer()|.
63   typedef std::map<PP_Resource, scoped_refptr<AudioBufferResource> > BufferMap;
64   BufferMap buffers_;
65 
66   PP_Resource* get_buffer_output_;
67 
68   scoped_refptr<TrackedCallback> configure_callback_;
69 
70   scoped_refptr<TrackedCallback> get_buffer_callback_;
71 
72   DISALLOW_COPY_AND_ASSIGN(MediaStreamAudioTrackResource);
73 };
74 
75 }  // namespace proxy
76 }  // namespace ppapi
77 
78 #endif  // PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
79