1 /* 2 * Copyright (c) 2012 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/audio_coding/include/audio_coding_module.h" 12 13 #include "webrtc/base/checks.h" 14 #include "webrtc/common_types.h" 15 #include "webrtc/modules/audio_coding/acm2/audio_coding_module_impl.h" 16 #include "webrtc/modules/audio_coding/acm2/rent_a_codec.h" 17 #include "webrtc/system_wrappers/include/clock.h" 18 #include "webrtc/system_wrappers/include/trace.h" 19 20 namespace webrtc { 21 22 // Create module 23 AudioCodingModule* AudioCodingModule::Create(int id) { 24 Config config; 25 config.id = id; 26 config.clock = Clock::GetRealTimeClock(); 27 return Create(config); 28 } 29 30 AudioCodingModule* AudioCodingModule::Create(int id, Clock* clock) { 31 Config config; 32 config.id = id; 33 config.clock = clock; 34 return Create(config); 35 } 36 37 AudioCodingModule* AudioCodingModule::Create(const Config& config) { 38 return new acm2::AudioCodingModuleImpl(config); 39 } 40 41 int AudioCodingModule::NumberOfCodecs() { 42 return static_cast<int>(acm2::RentACodec::NumberOfCodecs()); 43 } 44 45 int AudioCodingModule::Codec(int list_id, CodecInst* codec) { 46 auto codec_id = acm2::RentACodec::CodecIdFromIndex(list_id); 47 if (!codec_id) 48 return -1; 49 auto ci = acm2::RentACodec::CodecInstById(*codec_id); 50 if (!ci) 51 return -1; 52 *codec = *ci; 53 return 0; 54 } 55 56 int AudioCodingModule::Codec(const char* payload_name, 57 CodecInst* codec, 58 int sampling_freq_hz, 59 size_t channels) { 60 rtc::Optional<CodecInst> ci = acm2::RentACodec::CodecInstByParams( 61 payload_name, sampling_freq_hz, channels); 62 if (ci) { 63 *codec = *ci; 64 return 0; 65 } else { 66 // We couldn't find a matching codec, so set the parameters to unacceptable 67 // values and return. 68 codec->plname[0] = '\0'; 69 codec->pltype = -1; 70 codec->pacsize = 0; 71 codec->rate = 0; 72 codec->plfreq = 0; 73 return -1; 74 } 75 } 76 77 int AudioCodingModule::Codec(const char* payload_name, 78 int sampling_freq_hz, 79 size_t channels) { 80 rtc::Optional<acm2::RentACodec::CodecId> ci = 81 acm2::RentACodec::CodecIdByParams(payload_name, sampling_freq_hz, 82 channels); 83 if (!ci) 84 return -1; 85 rtc::Optional<int> i = acm2::RentACodec::CodecIndexFromId(*ci); 86 return i ? *i : -1; 87 } 88 89 // Checks the validity of the parameters of the given codec 90 bool AudioCodingModule::IsCodecValid(const CodecInst& codec) { 91 bool valid = acm2::RentACodec::IsCodecValid(codec); 92 if (!valid) 93 WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, -1, 94 "Invalid codec setting"); 95 return valid; 96 } 97 98 } // namespace webrtc 99
