/*
 *  Copyright (c) 2012 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 "webrtc/system_wrappers/include/file_wrapper.h"
#include "webrtc/system_wrappers/include/trace.h"
#include "webrtc/voice_engine/include/voe_errors.h"
#include "webrtc/voice_engine/voe_rtp_rtcp_impl.h"
#include "webrtc/voice_engine/voice_engine_impl.h"

#include "webrtc/voice_engine/channel.h"
#include "webrtc/voice_engine/transmit_mixer.h"

namespace webrtc {

VoERTP_RTCP* VoERTP_RTCP::GetInterface(VoiceEngine* voiceEngine) {
  if (NULL == voiceEngine) {
    return NULL;
  }
  VoiceEngineImpl* s = static_cast<VoiceEngineImpl*>(voiceEngine);
  s->AddRef();
  return s;
}

VoERTP_RTCPImpl::VoERTP_RTCPImpl(voe::SharedData* shared) : _shared(shared) {
  WEBRTC_TRACE(kTraceMemory, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "VoERTP_RTCPImpl::VoERTP_RTCPImpl() - ctor");
}

VoERTP_RTCPImpl::~VoERTP_RTCPImpl() {
  WEBRTC_TRACE(kTraceMemory, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "VoERTP_RTCPImpl::~VoERTP_RTCPImpl() - dtor");
}

int VoERTP_RTCPImpl::SetLocalSSRC(int channel, unsigned int ssrc) {
  WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "SetLocalSSRC(channel=%d, %lu)", channel, ssrc);
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "SetLocalSSRC() failed to locate channel");
    return -1;
  }
  return channelPtr->SetLocalSSRC(ssrc);
}

int VoERTP_RTCPImpl::GetLocalSSRC(int channel, unsigned int& ssrc) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetLocalSSRC() failed to locate channel");
    return -1;
  }
  return channelPtr->GetLocalSSRC(ssrc);
}

int VoERTP_RTCPImpl::GetRemoteSSRC(int channel, unsigned int& ssrc) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetRemoteSSRC() failed to locate channel");
    return -1;
  }
  return channelPtr->GetRemoteSSRC(ssrc);
}

int VoERTP_RTCPImpl::SetSendAudioLevelIndicationStatus(int channel,
                                                       bool enable,
                                                       unsigned char id) {
  WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "SetSendAudioLevelIndicationStatus(channel=%d, enable=%d,"
               " ID=%u)",
               channel, enable, id);
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  if (enable && (id < kVoiceEngineMinRtpExtensionId ||
                 id > kVoiceEngineMaxRtpExtensionId)) {
    // [RFC5285] The 4-bit id is the local identifier of this element in
    // the range 1-14 inclusive.
    _shared->SetLastError(
        VE_INVALID_ARGUMENT, kTraceError,
        "SetSendAudioLevelIndicationStatus() invalid ID parameter");
    return -1;
  }

  // Set state and id for the specified channel.
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(
        VE_CHANNEL_NOT_VALID, kTraceError,
        "SetSendAudioLevelIndicationStatus() failed to locate channel");
    return -1;
  }
  return channelPtr->SetSendAudioLevelIndicationStatus(enable, id);
}

int VoERTP_RTCPImpl::SetReceiveAudioLevelIndicationStatus(int channel,
                                                          bool enable,
                                                          unsigned char id) {
  WEBRTC_TRACE(
      kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
      "SetReceiveAudioLevelIndicationStatus(channel=%d, enable=%d, id=%u)",
      channel, enable, id);
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  if (enable && (id < kVoiceEngineMinRtpExtensionId ||
                 id > kVoiceEngineMaxRtpExtensionId)) {
    // [RFC5285] The 4-bit id is the local identifier of this element in
    // the range 1-14 inclusive.
    _shared->SetLastError(
        VE_INVALID_ARGUMENT, kTraceError,
        "SetReceiveAudioLevelIndicationStatus() invalid id parameter");
    return -1;
  }
  // Set state and id for the specified channel.
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channel_ptr = ch.channel();
  if (channel_ptr == NULL) {
    _shared->SetLastError(
        VE_CHANNEL_NOT_VALID, kTraceError,
        "SetReceiveAudioLevelIndicationStatus() failed to locate channel");
    return -1;
  }
  return channel_ptr->SetReceiveAudioLevelIndicationStatus(enable, id);
}

int VoERTP_RTCPImpl::SetRTCPStatus(int channel, bool enable) {
  WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "SetRTCPStatus(channel=%d, enable=%d)", channel, enable);
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "SetRTCPStatus() failed to locate channel");
    return -1;
  }
  channelPtr->SetRTCPStatus(enable);
  return 0;
}

int VoERTP_RTCPImpl::GetRTCPStatus(int channel, bool& enabled) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetRTCPStatus() failed to locate channel");
    return -1;
  }
  return channelPtr->GetRTCPStatus(enabled);
}

int VoERTP_RTCPImpl::SetRTCP_CNAME(int channel, const char cName[256]) {
  WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "SetRTCP_CNAME(channel=%d, cName=%s)", channel, cName);
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "SetRTCP_CNAME() failed to locate channel");
    return -1;
  }
  return channelPtr->SetRTCP_CNAME(cName);
}

int VoERTP_RTCPImpl::GetRemoteRTCP_CNAME(int channel, char cName[256]) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetRemoteRTCP_CNAME() failed to locate channel");
    return -1;
  }
  return channelPtr->GetRemoteRTCP_CNAME(cName);
}

int VoERTP_RTCPImpl::GetRemoteRTCPData(
    int channel,
    unsigned int& NTPHigh,           // from sender info in SR
    unsigned int& NTPLow,            // from sender info in SR
    unsigned int& timestamp,         // from sender info in SR
    unsigned int& playoutTimestamp,  // derived locally
    unsigned int* jitter,            // from report block 1 in SR/RR
    unsigned short* fractionLost)    // from report block 1 in SR/RR
{
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetRemoteRTCP_CNAME() failed to locate channel");
    return -1;
  }
  return channelPtr->GetRemoteRTCPData(NTPHigh, NTPLow, timestamp,
                                       playoutTimestamp, jitter, fractionLost);
}

int VoERTP_RTCPImpl::GetRTPStatistics(int channel,
                                      unsigned int& averageJitterMs,
                                      unsigned int& maxJitterMs,
                                      unsigned int& discardedPackets) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetRTPStatistics() failed to locate channel");
    return -1;
  }
  return channelPtr->GetRTPStatistics(averageJitterMs, maxJitterMs,
                                      discardedPackets);
}

int VoERTP_RTCPImpl::GetRTCPStatistics(int channel, CallStatistics& stats) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "GetRTPStatistics() failed to locate channel");
    return -1;
  }
  return channelPtr->GetRTPStatistics(stats);
}

int VoERTP_RTCPImpl::GetRemoteRTCPReportBlocks(
    int channel, std::vector<ReportBlock>* report_blocks) {
  if (!_shared->statistics().Initialized()) {
    _shared->SetLastError(VE_NOT_INITED, kTraceError);
    return -1;
  }
  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channel_ptr = ch.channel();
  if (channel_ptr == NULL) {
    _shared->SetLastError(
        VE_CHANNEL_NOT_VALID, kTraceError,
        "GetRemoteRTCPReportBlocks() failed to locate channel");
    return -1;
  }
  return channel_ptr->GetRemoteRTCPReportBlocks(report_blocks);
}

int VoERTP_RTCPImpl::SetNACKStatus(int channel, bool enable, int maxNoPackets) {
  WEBRTC_TRACE(kTraceApiCall, kTraceVoice, VoEId(_shared->instance_id(), -1),
               "SetNACKStatus(channel=%d, enable=%d, maxNoPackets=%d)", channel,
               enable, maxNoPackets);

  voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
  voe::Channel* channelPtr = ch.channel();
  if (channelPtr == NULL) {
    _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                          "SetNACKStatus() failed to locate channel");
    return -1;
  }
  channelPtr->SetNACKStatus(enable, maxNoPackets);
  return 0;
}

}  // namespace webrtc