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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "ppapi/proxy/media_stream_audio_track_resource.h"
#include "base/functional/bind.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::BindOnce(&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_.reset();
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 std::unique_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.reset();
}
}
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
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