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// Copyright (c) 2012 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 "content/renderer/media/rtc_video_capture_delegate.h"
#include "base/bind.h"
namespace content {
RtcVideoCaptureDelegate::RtcVideoCaptureDelegate(
const media::VideoCaptureSessionId id,
VideoCaptureImplManager* vc_manager)
: session_id_(id),
vc_manager_(vc_manager),
capture_engine_(NULL),
got_first_frame_(false),
error_occured_(false) {
DVLOG(3) << " RtcVideoCaptureDelegate::ctor";
capture_engine_ = vc_manager_->AddDevice(session_id_, this);
}
RtcVideoCaptureDelegate::~RtcVideoCaptureDelegate() {
DVLOG(3) << " RtcVideoCaptureDelegate::dtor";
vc_manager_->RemoveDevice(session_id_, this);
}
void RtcVideoCaptureDelegate::StartCapture(
const media::VideoCaptureCapability& capability,
const FrameCapturedCallback& captured_callback,
const StateChangeCallback& state_callback) {
DVLOG(3) << " RtcVideoCaptureDelegate::StartCapture ";
message_loop_proxy_ = base::MessageLoopProxy::current();
captured_callback_ = captured_callback;
state_callback_ = state_callback;
got_first_frame_ = false;
error_occured_ = false;
// Increase the reference count to ensure we are not deleted until
// The we are unregistered in RtcVideoCaptureDelegate::OnRemoved.
AddRef();
capture_engine_->StartCapture(this, capability);
}
void RtcVideoCaptureDelegate::StopCapture() {
// Immediately make sure we don't provide more frames.
captured_callback_.Reset();
state_callback_.Reset();
capture_engine_->StopCapture(this);
}
void RtcVideoCaptureDelegate::OnStarted(media::VideoCapture* capture) {
DVLOG(3) << " RtcVideoCaptureDelegate::OnStarted";
}
void RtcVideoCaptureDelegate::OnStopped(media::VideoCapture* capture) {
}
void RtcVideoCaptureDelegate::OnPaused(media::VideoCapture* capture) {
NOTIMPLEMENTED();
}
void RtcVideoCaptureDelegate::OnError(media::VideoCapture* capture,
int error_code) {
DVLOG(3) << " RtcVideoCaptureDelegate::OnError";
message_loop_proxy_->PostTask(
FROM_HERE,
base::Bind(&RtcVideoCaptureDelegate::OnErrorOnCaptureThread,
this, capture));
}
void RtcVideoCaptureDelegate::OnRemoved(media::VideoCapture* capture) {
DVLOG(3) << " RtcVideoCaptureDelegate::OnRemoved";
message_loop_proxy_->PostTask(
FROM_HERE,
base::Bind(&RtcVideoCaptureDelegate::OnRemovedOnCaptureThread,
this, capture));
// Balance the AddRef in StartCapture.
// This means we are no longer registered as an event handler and can safely
// be deleted.
Release();
}
void RtcVideoCaptureDelegate::OnBufferReady(
media::VideoCapture* capture,
scoped_refptr<media::VideoCapture::VideoFrameBuffer> buf) {
message_loop_proxy_->PostTask(
FROM_HERE,
base::Bind(&RtcVideoCaptureDelegate::OnBufferReadyOnCaptureThread,
this, capture, buf));
}
void RtcVideoCaptureDelegate::OnDeviceInfoReceived(
media::VideoCapture* capture,
const media::VideoCaptureParams& device_info) {
NOTIMPLEMENTED();
}
void RtcVideoCaptureDelegate::OnBufferReadyOnCaptureThread(
media::VideoCapture* capture,
scoped_refptr<media::VideoCapture::VideoFrameBuffer> buf) {
if (!captured_callback_.is_null()) {
if (!got_first_frame_) {
got_first_frame_ = true;
if (!state_callback_.is_null())
state_callback_.Run(CAPTURE_RUNNING);
}
captured_callback_.Run(*buf);
}
capture->FeedBuffer(buf);
}
void RtcVideoCaptureDelegate::OnErrorOnCaptureThread(
media::VideoCapture* capture) {
error_occured_ = true;
if (!state_callback_.is_null())
state_callback_.Run(CAPTURE_FAILED);
}
void RtcVideoCaptureDelegate::OnRemovedOnCaptureThread(
media::VideoCapture* capture) {
if (!error_occured_ && !state_callback_.is_null())
state_callback_.Run(CAPTURE_STOPPED);
}
} // namespace content
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