1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "webrtc/modules/rtp_rtcp/source/dtmf_queue.h" 12 13 #include <string.h> //memset 14 15 namespace webrtc { 16 DTMFqueue::DTMFqueue() 17 : dtmf_critsect_(CriticalSectionWrapper::CreateCriticalSection()), 18 next_empty_index_(0) { 19 memset(dtmf_key_, 0, sizeof(dtmf_key_)); 20 memset(dtmf_length, 0, sizeof(dtmf_length)); 21 memset(dtmf_level_, 0, sizeof(dtmf_level_)); 22 } 23 24 DTMFqueue::~DTMFqueue() { delete dtmf_critsect_; } 25 26 int32_t DTMFqueue::AddDTMF(uint8_t key, uint16_t len, uint8_t level) { 27 CriticalSectionScoped lock(dtmf_critsect_); 28 29 if (next_empty_index_ >= DTMF_OUTBAND_MAX) { 30 return -1; 31 } 32 int32_t index = next_empty_index_; 33 dtmf_key_[index] = key; 34 dtmf_length[index] = len; 35 dtmf_level_[index] = level; 36 next_empty_index_++; 37 return 0; 38 } 39 40 int8_t DTMFqueue::NextDTMF(uint8_t* dtmf_key, uint16_t* len, uint8_t* level) { 41 CriticalSectionScoped lock(dtmf_critsect_); 42 43 if (!PendingDTMF()) { 44 return -1; 45 } 46 *dtmf_key = dtmf_key_[0]; 47 *len = dtmf_length[0]; 48 *level = dtmf_level_[0]; 49 50 memmove(&(dtmf_key_[0]), &(dtmf_key_[1]), 51 next_empty_index_ * sizeof(uint8_t)); 52 memmove(&(dtmf_length[0]), &(dtmf_length[1]), 53 next_empty_index_ * sizeof(uint16_t)); 54 memmove(&(dtmf_level_[0]), &(dtmf_level_[1]), 55 next_empty_index_ * sizeof(uint8_t)); 56 57 next_empty_index_--; 58 return 0; 59 } 60 61 bool DTMFqueue::PendingDTMF() { return (next_empty_index_ > 0); } 62 63 void DTMFqueue::ResetDTMF() { next_empty_index_ = 0; } 64 } // namespace webrtc 65
