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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 |
| 11 #include "webrtc/modules/audio_coding/neteq/decision_logic_fax.h" | 11 #include "webrtc/modules/audio_coding/neteq/decision_logic_fax.h" |
| 12 | 12 |
| 13 #include <assert.h> | 13 #include <assert.h> |
| 14 | 14 |
| 15 #include <algorithm> | 15 #include <algorithm> |
| 16 | 16 |
| 17 #include "webrtc/modules/audio_coding/neteq/decoder_database.h" | 17 #include "webrtc/modules/audio_coding/neteq/decoder_database.h" |
| 18 #include "webrtc/modules/audio_coding/neteq/sync_buffer.h" | 18 #include "webrtc/modules/audio_coding/neteq/sync_buffer.h" |
| 19 | 19 |
| 20 namespace webrtc { | 20 namespace webrtc { |
| 21 | 21 |
| 22 Operations DecisionLogicFax::GetDecisionSpecialized( | 22 Operations DecisionLogicFax::GetDecisionSpecialized( |
| 23 const SyncBuffer& sync_buffer, | 23 const SyncBuffer& sync_buffer, |
| 24 const Expand& expand, | 24 const Expand& expand, |
| 25 size_t decoder_frame_length, | 25 size_t decoder_frame_length, |
| 26 const RTPHeader* packet_header, | 26 const Packet* next_packet, |
| 27 Modes prev_mode, | 27 Modes prev_mode, |
| 28 bool play_dtmf, | 28 bool play_dtmf, |
| 29 bool* reset_decoder, | 29 bool* reset_decoder, |
| 30 size_t generated_noise_samples) { | 30 size_t generated_noise_samples) { |
| 31 assert(playout_mode_ == kPlayoutFax || playout_mode_ == kPlayoutOff); | 31 assert(playout_mode_ == kPlayoutFax || playout_mode_ == kPlayoutOff); |
| 32 uint32_t target_timestamp = sync_buffer.end_timestamp(); | 32 uint32_t target_timestamp = sync_buffer.end_timestamp(); |
| 33 uint32_t available_timestamp = 0; | 33 uint32_t available_timestamp = 0; |
| 34 int is_cng_packet = 0; | 34 int is_cng_packet = 0; |
| 35 if (packet_header) { | 35 if (next_packet) { |
| 36 available_timestamp = packet_header->timestamp; | 36 available_timestamp = next_packet->timestamp; |
| 37 is_cng_packet = | 37 is_cng_packet = decoder_database_->IsComfortNoise(next_packet->payloadType); |
| 38 decoder_database_->IsComfortNoise(packet_header->payloadType); | |
| 39 } | 38 } |
| 40 if (is_cng_packet) { | 39 if (is_cng_packet) { |
| 41 if (static_cast<int32_t>((generated_noise_samples + target_timestamp) | 40 if (static_cast<int32_t>((generated_noise_samples + target_timestamp) |
| 42 - available_timestamp) >= 0) { | 41 - available_timestamp) >= 0) { |
| 43 // Time to play this packet now. | 42 // Time to play this packet now. |
| 44 return kRfc3389Cng; | 43 return kRfc3389Cng; |
| 45 } else { | 44 } else { |
| 46 // Wait before playing this packet. | 45 // Wait before playing this packet. |
| 47 return kRfc3389CngNoPacket; | 46 return kRfc3389CngNoPacket; |
| 48 } | 47 } |
| 49 } | 48 } |
| 50 if (!packet_header) { | 49 if (!next_packet) { |
| 51 // No packet. If in CNG mode, play as usual. Otherwise, use other method to | 50 // No packet. If in CNG mode, play as usual. Otherwise, use other method to |
| 52 // generate data. | 51 // generate data. |
| 53 if (cng_state_ == kCngRfc3389On) { | 52 if (cng_state_ == kCngRfc3389On) { |
| 54 // Continue playing comfort noise. | 53 // Continue playing comfort noise. |
| 55 return kRfc3389CngNoPacket; | 54 return kRfc3389CngNoPacket; |
| 56 } else if (cng_state_ == kCngInternalOn) { | 55 } else if (cng_state_ == kCngInternalOn) { |
| 57 // Continue playing codec-internal comfort noise. | 56 // Continue playing codec-internal comfort noise. |
| 58 return kCodecInternalCng; | 57 return kCodecInternalCng; |
| 59 } else { | 58 } else { |
| 60 // Nothing to play. Generate some data to play out. | 59 // Nothing to play. Generate some data to play out. |
| (...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 94 assert(0); | 93 assert(0); |
| 95 return kUndefined; | 94 return kUndefined; |
| 96 } | 95 } |
| 97 } | 96 } |
| 98 } | 97 } |
| 99 } | 98 } |
| 100 } | 99 } |
| 101 | 100 |
| 102 | 101 |
| 103 } // namespace webrtc | 102 } // namespace webrtc |
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