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 {
DTMFqueue()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
~DTMFqueue()24 DTMFqueue::~DTMFqueue() { delete dtmf_critsect_; }
25
AddDTMF(uint8_t key,uint16_t len,uint8_t level)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
NextDTMF(uint8_t * dtmf_key,uint16_t * len,uint8_t * level)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
PendingDTMF()61 bool DTMFqueue::PendingDTMF() { return (next_empty_index_ > 0); }
62
ResetDTMF()63 void DTMFqueue::ResetDTMF() { next_empty_index_ = 0; }
64 } // namespace webrtc
65