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/main/acm2/acm_cng.h" 12 13 #include "webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h" 14 #include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h" 15 #include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h" 16 #include "webrtc/system_wrappers/interface/trace.h" 17 18 namespace webrtc { 19 20 namespace acm2 { 21 22 ACMCNG::ACMCNG(int16_t codec_id) { 23 encoder_inst_ptr_ = NULL; 24 codec_id_ = codec_id; 25 samp_freq_hz_ = ACMCodecDB::CodecFreq(codec_id_); 26 return; 27 } 28 29 ACMCNG::~ACMCNG() { 30 if (encoder_inst_ptr_ != NULL) { 31 WebRtcCng_FreeEnc(encoder_inst_ptr_); 32 encoder_inst_ptr_ = NULL; 33 } 34 return; 35 } 36 37 // CNG is not like a regular encoder, this function 38 // should not be called normally 39 // instead the following function is called from inside 40 // ACMGenericCodec::ProcessFrameVADDTX 41 int16_t ACMCNG::InternalEncode(uint8_t* /* bitstream */, 42 int16_t* /* bitstream_len_byte */) { 43 return -1; 44 } 45 46 // CNG is not like a regular encoder, 47 // this function should not be called normally 48 // instead the following function is called from inside 49 // ACMGenericCodec::ProcessFrameVADDTX 50 int16_t ACMCNG::InternalInitEncoder(WebRtcACMCodecParams* /* codec_params */) { 51 return -1; 52 } 53 54 ACMGenericCodec* ACMCNG::CreateInstance(void) { return NULL; } 55 56 int16_t ACMCNG::InternalCreateEncoder() { 57 if (WebRtcCng_CreateEnc(&encoder_inst_ptr_) < 0) { 58 encoder_inst_ptr_ = NULL; 59 return -1; 60 } else { 61 return 0; 62 } 63 } 64 65 void ACMCNG::DestructEncoderSafe() { 66 if (encoder_inst_ptr_ != NULL) { 67 WebRtcCng_FreeEnc(encoder_inst_ptr_); 68 encoder_inst_ptr_ = NULL; 69 } 70 encoder_exist_ = false; 71 encoder_initialized_ = false; 72 } 73 74 } // namespace acm2 75 76 } // namespace webrtc 77
