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/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "video_engine/vie_encryption_impl.h"
#include "system_wrappers/interface/trace.h"
#include "video_engine/include/vie_errors.h"
#include "video_engine/vie_channel.h"
#include "video_engine/vie_channel_manager.h"
#include "video_engine/vie_defines.h"
#include "video_engine/vie_impl.h"
#include "video_engine/vie_shared_data.h"
namespace webrtc {
ViEEncryption* ViEEncryption::GetInterface(VideoEngine* video_engine) {
#ifdef WEBRTC_VIDEO_ENGINE_ENCRYPTION_API
if (video_engine == NULL) {
return NULL;
}
VideoEngineImpl* vie_impl = reinterpret_cast<VideoEngineImpl*>(video_engine);
ViEEncryptionImpl* vie_encryption_impl = vie_impl;
// Increase ref count.
(*vie_encryption_impl)++;
return vie_encryption_impl;
#else
return NULL;
#endif
}
int ViEEncryptionImpl::Release() {
WEBRTC_TRACE(kTraceApiCall, kTraceVideo, shared_data_->instance_id(),
"ViEEncryptionImpl::Release()");
// Decrease ref count.
(*this)--;
WebRtc_Word32 ref_count = GetCount();
if (ref_count < 0) {
WEBRTC_TRACE(kTraceWarning, kTraceVideo, shared_data_->instance_id(),
"ViEEncryptionImpl release too many times");
shared_data_->SetLastError(kViEAPIDoesNotExist);
return -1;
}
WEBRTC_TRACE(kTraceInfo, kTraceVideo, shared_data_->instance_id(),
"ViEEncryptionImpl reference count: %d", ref_count);
return ref_count;
}
ViEEncryptionImpl::ViEEncryptionImpl(ViESharedData* shared_data)
: shared_data_(shared_data) {
WEBRTC_TRACE(kTraceMemory, kTraceVideo, shared_data_->instance_id(),
"ViEEncryptionImpl::ViEEncryptionImpl() Ctor");
}
ViEEncryptionImpl::~ViEEncryptionImpl() {
WEBRTC_TRACE(kTraceMemory, kTraceVideo, shared_data_->instance_id(),
"ViEEncryptionImpl::~ViEEncryptionImpl() Dtor");
}
int ViEEncryptionImpl::RegisterExternalEncryption(const int video_channel,
Encryption& encryption) {
WEBRTC_TRACE(kTraceApiCall, kTraceVideo,
ViEId(shared_data_->instance_id(), video_channel),
"RegisterExternalEncryption(video_channel=%d)", video_channel);
ViEChannelManagerScoped cs(*(shared_data_->channel_manager()));
ViEChannel* vie_channel = cs.Channel(video_channel);
if (vie_channel == NULL) {
WEBRTC_TRACE(kTraceError, kTraceVideo,
ViEId(shared_data_->instance_id(), video_channel),
"%s: No channel %d", __FUNCTION__, video_channel);
shared_data_->SetLastError(kViEEncryptionInvalidChannelId);
return -1;
}
if (vie_channel->RegisterExternalEncryption(&encryption) != 0) {
shared_data_->SetLastError(kViEEncryptionUnknownError);
return -1;
}
return 0;
}
int ViEEncryptionImpl::DeregisterExternalEncryption(const int video_channel) {
WEBRTC_TRACE(kTraceApiCall, kTraceVideo,
ViEId(shared_data_->instance_id(), video_channel),
"RegisterExternalEncryption(video_channel=%d)", video_channel);
ViEChannelManagerScoped cs(*(shared_data_->channel_manager()));
ViEChannel* vie_channel = cs.Channel(video_channel);
if (vie_channel == NULL) {
WEBRTC_TRACE(kTraceError, kTraceVideo,
ViEId(shared_data_->instance_id(), video_channel),
"%s: No channel %d", __FUNCTION__, video_channel);
shared_data_->SetLastError(kViEEncryptionInvalidChannelId);
return -1;
}
if (vie_channel->DeRegisterExternalEncryption() != 0) {
shared_data_->SetLastError(kViEEncryptionUnknownError);
return -1;
}
return 0;
}
} // namespace webrtc
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