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>
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() {
25 delete dtmf_critsect_;
26 }
27
AddDTMF(uint8_t key,uint16_t len,uint8_t level)28 int32_t DTMFqueue::AddDTMF(uint8_t key, uint16_t len, uint8_t level) {
29 CriticalSectionScoped lock(dtmf_critsect_);
30
31 if (next_empty_index_ >= DTMF_OUTBAND_MAX) {
32 return -1;
33 }
34 int32_t index = next_empty_index_;
35 dtmf_key_[index] = key;
36 dtmf_length[index] = len;
37 dtmf_level_[index] = level;
38 next_empty_index_++;
39 return 0;
40 }
41
NextDTMF(uint8_t * dtmf_key,uint16_t * len,uint8_t * level)42 int8_t DTMFqueue::NextDTMF(uint8_t* dtmf_key, uint16_t* len, uint8_t* level) {
43 CriticalSectionScoped lock(dtmf_critsect_);
44 if (next_empty_index_ == 0)
45 return -1;
46
47 *dtmf_key = dtmf_key_[0];
48 *len = dtmf_length[0];
49 *level = dtmf_level_[0];
50
51 memmove(&(dtmf_key_[0]), &(dtmf_key_[1]),
52 next_empty_index_ * sizeof(uint8_t));
53 memmove(&(dtmf_length[0]), &(dtmf_length[1]),
54 next_empty_index_ * sizeof(uint16_t));
55 memmove(&(dtmf_level_[0]), &(dtmf_level_[1]),
56 next_empty_index_ * sizeof(uint8_t));
57
58 next_empty_index_--;
59 return 0;
60 }
61
PendingDTMF()62 bool DTMFqueue::PendingDTMF() {
63 CriticalSectionScoped lock(dtmf_critsect_);
64 return next_empty_index_ > 0;
65 }
66
ResetDTMF()67 void DTMFqueue::ResetDTMF() {
68 CriticalSectionScoped lock(dtmf_critsect_);
69 next_empty_index_ = 0;
70 }
71 } // namespace webrtc
72