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1 /* | 1 /* |
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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96 void DecisionLogic::SetSampleRate(int fs_hz, size_t output_size_samples) { | 96 void DecisionLogic::SetSampleRate(int fs_hz, size_t output_size_samples) { |
97 // TODO(hlundin): Change to an enumerator and skip assert. | 97 // TODO(hlundin): Change to an enumerator and skip assert. |
98 assert(fs_hz == 8000 || fs_hz == 16000 || fs_hz == 32000 || fs_hz == 48000); | 98 assert(fs_hz == 8000 || fs_hz == 16000 || fs_hz == 32000 || fs_hz == 48000); |
99 fs_mult_ = fs_hz / 8000; | 99 fs_mult_ = fs_hz / 8000; |
100 output_size_samples_ = output_size_samples; | 100 output_size_samples_ = output_size_samples; |
101 } | 101 } |
102 | 102 |
103 Operations DecisionLogic::GetDecision(const SyncBuffer& sync_buffer, | 103 Operations DecisionLogic::GetDecision(const SyncBuffer& sync_buffer, |
104 const Expand& expand, | 104 const Expand& expand, |
105 size_t decoder_frame_length, | 105 size_t decoder_frame_length, |
106 const RTPHeader* packet_header, | 106 const Packet* next_packet, |
107 Modes prev_mode, | 107 Modes prev_mode, |
108 bool play_dtmf, | 108 bool play_dtmf, |
109 size_t generated_noise_samples, | 109 size_t generated_noise_samples, |
110 bool* reset_decoder) { | 110 bool* reset_decoder) { |
111 // If last mode was CNG (or Expand, since this could be covering up for | 111 // If last mode was CNG (or Expand, since this could be covering up for |
112 // a lost CNG packet), remember that CNG is on. This is needed if comfort | 112 // a lost CNG packet), remember that CNG is on. This is needed if comfort |
113 // noise is interrupted by DTMF. | 113 // noise is interrupted by DTMF. |
114 if (prev_mode == kModeRfc3389Cng) { | 114 if (prev_mode == kModeRfc3389Cng) { |
115 cng_state_ = kCngRfc3389On; | 115 cng_state_ = kCngRfc3389On; |
116 } else if (prev_mode == kModeCodecInternalCng) { | 116 } else if (prev_mode == kModeCodecInternalCng) { |
117 cng_state_ = kCngInternalOn; | 117 cng_state_ = kCngInternalOn; |
118 } | 118 } |
119 | 119 |
120 const size_t samples_left = | 120 const size_t samples_left = |
121 sync_buffer.FutureLength() - expand.overlap_length(); | 121 sync_buffer.FutureLength() - expand.overlap_length(); |
122 const size_t cur_size_samples = | 122 const size_t cur_size_samples = |
123 samples_left + packet_buffer_.NumSamplesInBuffer(decoder_frame_length); | 123 samples_left + packet_buffer_.NumSamplesInBuffer(decoder_frame_length); |
124 | 124 |
125 prev_time_scale_ = prev_time_scale_ && | 125 prev_time_scale_ = prev_time_scale_ && |
126 (prev_mode == kModeAccelerateSuccess || | 126 (prev_mode == kModeAccelerateSuccess || |
127 prev_mode == kModeAccelerateLowEnergy || | 127 prev_mode == kModeAccelerateLowEnergy || |
128 prev_mode == kModePreemptiveExpandSuccess || | 128 prev_mode == kModePreemptiveExpandSuccess || |
129 prev_mode == kModePreemptiveExpandLowEnergy); | 129 prev_mode == kModePreemptiveExpandLowEnergy); |
130 | 130 |
131 FilterBufferLevel(cur_size_samples, prev_mode); | 131 FilterBufferLevel(cur_size_samples, prev_mode); |
132 | 132 |
133 return GetDecisionSpecialized(sync_buffer, expand, decoder_frame_length, | 133 return GetDecisionSpecialized(sync_buffer, expand, decoder_frame_length, |
134 packet_header, prev_mode, play_dtmf, | 134 next_packet, prev_mode, play_dtmf, |
135 reset_decoder, generated_noise_samples); | 135 reset_decoder, generated_noise_samples); |
136 } | 136 } |
137 | 137 |
138 void DecisionLogic::ExpandDecision(Operations operation) { | 138 void DecisionLogic::ExpandDecision(Operations operation) { |
139 if (operation == kExpand) { | 139 if (operation == kExpand) { |
140 num_consecutive_expands_++; | 140 num_consecutive_expands_++; |
141 } else { | 141 } else { |
142 num_consecutive_expands_ = 0; | 142 num_consecutive_expands_ = 0; |
143 } | 143 } |
144 } | 144 } |
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162 timescale_countdown_ = | 162 timescale_countdown_ = |
163 tick_timer_->GetNewCountdown(kMinTimescaleInterval); | 163 tick_timer_->GetNewCountdown(kMinTimescaleInterval); |
164 } | 164 } |
165 buffer_level_filter_->Update(buffer_size_packets, sample_memory_local, | 165 buffer_level_filter_->Update(buffer_size_packets, sample_memory_local, |
166 packet_length_samples_); | 166 packet_length_samples_); |
167 prev_time_scale_ = false; | 167 prev_time_scale_ = false; |
168 } | 168 } |
169 } | 169 } |
170 | 170 |
171 } // namespace webrtc | 171 } // namespace webrtc |
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