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// 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_video_track_resource.h"
#include "base/logging.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/video_frame_resource.h"
#include "ppapi/shared_impl/media_stream_buffer.h"
#include "ppapi/shared_impl/media_stream_video_track_shared.h"
#include "ppapi/shared_impl/var.h"
namespace ppapi {
namespace proxy {
MediaStreamVideoTrackResource::MediaStreamVideoTrackResource(
Connection connection,
PP_Instance instance,
int pending_renderer_id,
const std::string& id)
: MediaStreamTrackResourceBase(
connection, instance, pending_renderer_id, id),
get_frame_output_(NULL) {
}
MediaStreamVideoTrackResource::~MediaStreamVideoTrackResource() {
Close();
}
thunk::PPB_MediaStreamVideoTrack_API*
MediaStreamVideoTrackResource::AsPPB_MediaStreamVideoTrack_API() {
return this;
}
PP_Var MediaStreamVideoTrackResource::GetId() {
return StringVar::StringToPPVar(id());
}
PP_Bool MediaStreamVideoTrackResource::HasEnded() {
return PP_FromBool(has_ended());
}
int32_t MediaStreamVideoTrackResource::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_frame_callback_)) {
return PP_ERROR_INPROGRESS;
}
// Do not support configure, if frames are hold by plugin.
if (!frames_.empty())
return PP_ERROR_INPROGRESS;
MediaStreamVideoTrackShared::Attributes attributes;
int i = 0;
for (;attrib_list[i] != PP_MEDIASTREAMVIDEOTRACK_ATTRIB_NONE; i += 2) {
switch (attrib_list[i]) {
case PP_MEDIASTREAMVIDEOTRACK_ATTRIB_BUFFERED_FRAMES:
attributes.buffers = attrib_list[i + 1];
break;
case PP_MEDIASTREAMVIDEOTRACK_ATTRIB_WIDTH:
attributes.width = attrib_list[i + 1];
break;
case PP_MEDIASTREAMVIDEOTRACK_ATTRIB_HEIGHT:
attributes.height = attrib_list[i + 1];
break;
case PP_MEDIASTREAMVIDEOTRACK_ATTRIB_FORMAT:
attributes.format = static_cast<PP_VideoFrame_Format>(attrib_list[i + 1]);
break;
default:
return PP_ERROR_BADARGUMENT;
}
}
if (!MediaStreamVideoTrackShared::VerifyAttributes(attributes))
return PP_ERROR_BADARGUMENT;
configure_callback_ = callback;
Call<PpapiPluginMsg_MediaStreamVideoTrack_ConfigureReply>(
RENDERER,
PpapiHostMsg_MediaStreamVideoTrack_Configure(attributes),
base::Bind(&MediaStreamVideoTrackResource::OnPluginMsgConfigureReply,
base::Unretained(this)),
callback);
return PP_OK_COMPLETIONPENDING;
}
int32_t MediaStreamVideoTrackResource::GetAttrib(
PP_MediaStreamVideoTrack_Attrib attrib,
int32_t* value) {
// TODO(penghuang): implement this function.
return PP_ERROR_NOTSUPPORTED;
}
int32_t MediaStreamVideoTrackResource::GetFrame(
PP_Resource* frame,
scoped_refptr<TrackedCallback> callback) {
if (has_ended())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(configure_callback_) ||
TrackedCallback::IsPending(get_frame_callback_)) {
return PP_ERROR_INPROGRESS;
}
*frame = GetVideoFrame();
if (*frame)
return PP_OK;
get_frame_output_ = frame;
get_frame_callback_ = callback;
return PP_OK_COMPLETIONPENDING;
}
int32_t MediaStreamVideoTrackResource::RecycleFrame(PP_Resource frame) {
FrameMap::iterator it = frames_.find(frame);
if (it == frames_.end())
return PP_ERROR_BADRESOURCE;
scoped_refptr<VideoFrameResource> frame_resource = it->second;
frames_.erase(it);
if (has_ended())
return PP_OK;
DCHECK_GE(frame_resource->GetBufferIndex(), 0);
SendEnqueueBufferMessageToHost(frame_resource->GetBufferIndex());
frame_resource->Invalidate();
return PP_OK;
}
void MediaStreamVideoTrackResource::Close() {
if (has_ended())
return;
if (TrackedCallback::IsPending(get_frame_callback_)) {
*get_frame_output_ = 0;
get_frame_callback_->PostAbort();
get_frame_callback_ = NULL;
get_frame_output_ = 0;
}
ReleaseFrames();
MediaStreamTrackResourceBase::CloseInternal();
}
void MediaStreamVideoTrackResource::OnNewBufferEnqueued() {
if (!TrackedCallback::IsPending(get_frame_callback_))
return;
*get_frame_output_ = GetVideoFrame();
int32_t result = *get_frame_output_ ? PP_OK : PP_ERROR_FAILED;
get_frame_output_ = NULL;
scoped_refptr<TrackedCallback> callback;
callback.swap(get_frame_callback_);
callback->Run(result);
}
PP_Resource MediaStreamVideoTrackResource::GetVideoFrame() {
int32_t index = buffer_manager()->DequeueBuffer();
if (index < 0)
return 0;
MediaStreamBuffer* buffer = buffer_manager()->GetBufferPointer(index);
DCHECK(buffer);
scoped_refptr<VideoFrameResource> resource =
new VideoFrameResource(pp_instance(), index, buffer);
// Add |pp_resource()| and |resource| into |frames_|.
// |frames_| uses scoped_ptr<> to hold a ref of |resource|. It keeps the
// resource alive.
frames_.insert(FrameMap::value_type(resource->pp_resource(), resource));
return resource->GetReference();
}
void MediaStreamVideoTrackResource::ReleaseFrames() {
FrameMap::iterator it = frames_.begin();
while (it != frames_.end()) {
// Just invalidate and release VideoFrameResorce, but keep PP_Resource.
// So plugin can still use |RecycleFrame()|.
it->second->Invalidate();
it->second = NULL;
}
}
void MediaStreamVideoTrackResource::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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