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.
5 #include "ppapi/proxy/media_stream_audio_track_resource.h"
7 #include "ppapi/proxy/audio_buffer_resource.h"
8 #include "ppapi/shared_impl/media_stream_buffer.h"
9 #include "ppapi/shared_impl/var.h"
14 MediaStreamAudioTrackResource::MediaStreamAudioTrackResource(
15 Connection connection,
17 int pending_renderer_id,
18 const std::string& id)
19 : MediaStreamTrackResourceBase(
20 connection, instance, pending_renderer_id, id),
21 get_buffer_output_(NULL) {
24 MediaStreamAudioTrackResource::~MediaStreamAudioTrackResource() {
28 thunk::PPB_MediaStreamAudioTrack_API*
29 MediaStreamAudioTrackResource::AsPPB_MediaStreamAudioTrack_API() {
33 PP_Var MediaStreamAudioTrackResource::GetId() {
34 return StringVar::StringToPPVar(id());
37 PP_Bool MediaStreamAudioTrackResource::HasEnded() {
38 return PP_FromBool(has_ended());
41 int32_t MediaStreamAudioTrackResource::Configure(
42 const int32_t attrib_list[],
43 scoped_refptr<TrackedCallback> callback) {
44 // TODO(penghuang): Implement this function.
45 return PP_ERROR_NOTSUPPORTED;
48 int32_t MediaStreamAudioTrackResource::GetAttrib(
49 PP_MediaStreamAudioTrack_Attrib attrib,
51 // TODO(penghuang): Implement this function.
52 return PP_ERROR_NOTSUPPORTED;
55 int32_t MediaStreamAudioTrackResource::GetBuffer(
57 scoped_refptr<TrackedCallback> callback) {
59 return PP_ERROR_FAILED;
61 if (TrackedCallback::IsPending(get_buffer_callback_))
62 return PP_ERROR_INPROGRESS;
64 *buffer = GetAudioBuffer();
68 // TODO(penghuang): Use the callback as hints to determine which thread will
69 // use the resource, so we could deliver buffers to the target thread directly
70 // for better performance.
71 get_buffer_output_ = buffer;
72 get_buffer_callback_ = callback;
73 return PP_OK_COMPLETIONPENDING;
76 int32_t MediaStreamAudioTrackResource::RecycleBuffer(PP_Resource buffer) {
77 BufferMap::iterator it = buffers_.find(buffer);
78 if (it == buffers_.end())
79 return PP_ERROR_BADRESOURCE;
81 scoped_refptr<AudioBufferResource> buffer_resource = it->second;
87 DCHECK_GE(buffer_resource->GetBufferIndex(), 0);
89 SendEnqueueBufferMessageToHost(buffer_resource->GetBufferIndex());
90 buffer_resource->Invalidate();
94 void MediaStreamAudioTrackResource::Close() {
98 if (TrackedCallback::IsPending(get_buffer_callback_)) {
99 *get_buffer_output_ = 0;
100 get_buffer_callback_->PostAbort();
101 get_buffer_callback_ = NULL;
102 get_buffer_output_ = 0;
106 MediaStreamTrackResourceBase::CloseInternal();
109 void MediaStreamAudioTrackResource::OnNewBufferEnqueued() {
110 if (!TrackedCallback::IsPending(get_buffer_callback_))
113 *get_buffer_output_ = GetAudioBuffer();
114 int32_t result = *get_buffer_output_ ? PP_OK : PP_ERROR_FAILED;
115 get_buffer_output_ = NULL;
116 scoped_refptr<TrackedCallback> callback;
117 callback.swap(get_buffer_callback_);
118 callback->Run(result);
121 PP_Resource MediaStreamAudioTrackResource::GetAudioBuffer() {
122 int32_t index = buffer_manager()->DequeueBuffer();
126 MediaStreamBuffer* buffer = buffer_manager()->GetBufferPointer(index);
128 scoped_refptr<AudioBufferResource> resource =
129 new AudioBufferResource(pp_instance(), index, buffer);
130 // Add |pp_resource()| and |resource| into |buffers_|.
131 // |buffers_| uses scoped_ptr<> to hold a ref of |resource|. It keeps the
133 buffers_.insert(BufferMap::value_type(resource->pp_resource(), resource));
134 return resource->GetReference();
137 void MediaStreamAudioTrackResource::ReleaseBuffers() {
138 BufferMap::iterator it = buffers_.begin();
139 while (it != buffers_.end()) {
140 // Just invalidate and release VideoBufferResorce, but keep PP_Resource.
141 // So plugin can still use |RecycleBuffer()|.
142 it->second->Invalidate();