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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 "webrtc/modules/rtp_rtcp/source/dtmf_queue.h"
#include <string.h> //memset
namespace webrtc {
DTMFqueue::DTMFqueue()
: dtmf_critsect_(CriticalSectionWrapper::CreateCriticalSection()),
next_empty_index_(0) {
memset(dtmf_key_, 0, sizeof(dtmf_key_));
memset(dtmf_length, 0, sizeof(dtmf_length));
memset(dtmf_level_, 0, sizeof(dtmf_level_));
}
DTMFqueue::~DTMFqueue() { delete dtmf_critsect_; }
int32_t DTMFqueue::AddDTMF(uint8_t key, uint16_t len, uint8_t level) {
CriticalSectionScoped lock(dtmf_critsect_);
if (next_empty_index_ >= DTMF_OUTBAND_MAX) {
return -1;
}
int32_t index = next_empty_index_;
dtmf_key_[index] = key;
dtmf_length[index] = len;
dtmf_level_[index] = level;
next_empty_index_++;
return 0;
}
int8_t DTMFqueue::NextDTMF(uint8_t* dtmf_key, uint16_t* len, uint8_t* level) {
CriticalSectionScoped lock(dtmf_critsect_);
if (!PendingDTMF()) {
return -1;
}
*dtmf_key = dtmf_key_[0];
*len = dtmf_length[0];
*level = dtmf_level_[0];
memmove(&(dtmf_key_[0]), &(dtmf_key_[1]),
next_empty_index_ * sizeof(uint8_t));
memmove(&(dtmf_length[0]), &(dtmf_length[1]),
next_empty_index_ * sizeof(uint16_t));
memmove(&(dtmf_level_[0]), &(dtmf_level_[1]),
next_empty_index_ * sizeof(uint8_t));
next_empty_index_--;
return 0;
}
bool DTMFqueue::PendingDTMF() { return (next_empty_index_ > 0); }
void DTMFqueue::ResetDTMF() { next_empty_index_ = 0; }
} // namespace webrtc
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