diff options
Diffstat (limited to 'chromium/third_party/webrtc/modules/audio_coding/main/source/acm_isac.cc')
| -rw-r--r-- | chromium/third_party/webrtc/modules/audio_coding/main/source/acm_isac.cc | 903 |
1 files changed, 0 insertions, 903 deletions
diff --git a/chromium/third_party/webrtc/modules/audio_coding/main/source/acm_isac.cc b/chromium/third_party/webrtc/modules/audio_coding/main/source/acm_isac.cc deleted file mode 100644 index 61fa32f6d6d..00000000000 --- a/chromium/third_party/webrtc/modules/audio_coding/main/source/acm_isac.cc +++ /dev/null @@ -1,903 +0,0 @@ -/* - * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ -#include "webrtc/modules/audio_coding/main/source/acm_isac.h" - -#include "webrtc/modules/audio_coding/main/source/acm_codec_database.h" -#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h" -#include "webrtc/modules/audio_coding/main/source/acm_neteq.h" -#include "webrtc/modules/audio_coding/neteq/interface/webrtc_neteq.h" -#include "webrtc/modules/audio_coding/neteq/interface/webrtc_neteq_help_macros.h" -#include "webrtc/system_wrappers/interface/trace.h" - -#ifdef WEBRTC_CODEC_ISAC -#include "webrtc/modules/audio_coding/codecs/isac/main/interface/isac.h" -#include "webrtc/modules/audio_coding/main/source/acm_isac_macros.h" -#endif - -#ifdef WEBRTC_CODEC_ISACFX -#include "webrtc/modules/audio_coding/codecs/isac/fix/interface/isacfix.h" -#include "webrtc/modules/audio_coding/main/source/acm_isac_macros.h" -#endif - -namespace webrtc { - -namespace acm1 { - -// we need this otherwise we cannot use forward declaration -// in the header file -#if (defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX)) -struct ACMISACInst { - ACM_ISAC_STRUCT *inst; -}; -#endif - -#define ISAC_MIN_RATE 10000 -#define ISAC_MAX_RATE 56000 - -// Tables for bandwidth estimates -#define NR_ISAC_BANDWIDTHS 24 -static const int32_t kIsacRatesWb[NR_ISAC_BANDWIDTHS] = { - 10000, 11100, 12300, 13700, 15200, 16900, - 18800, 20900, 23300, 25900, 28700, 31900, - 10100, 11200, 12400, 13800, 15300, 17000, - 18900, 21000, 23400, 26000, 28800, 32000 -}; - -static const int32_t kIsacRatesSwb[NR_ISAC_BANDWIDTHS] = { - 10000, 11000, 12400, 13800, 15300, 17000, - 18900, 21000, 23200, 25400, 27600, 29800, - 32000, 34100, 36300, 38500, 40700, 42900, - 45100, 47300, 49500, 51700, 53900, 56000, -}; - -#if (!defined(WEBRTC_CODEC_ISAC) && !defined(WEBRTC_CODEC_ISACFX)) - -ACMISAC::ACMISAC(int16_t /* codec_id */) - : codec_inst_ptr_(NULL), - is_enc_initialized_(false), - isac_coding_mode_(CHANNEL_INDEPENDENT), - enforce_frame_size_(false), - isac_currentBN_(32000), - samples_in10MsAudio_(160) { // Initiates to 16 kHz mode. - // Initiate decoder parameters for the 32 kHz mode. - memset(&decoder_params32kHz_, 0, sizeof(WebRtcACMCodecParams)); - decoder_params32kHz_.codec_inst.pltype = -1; - - return; -} - -ACMISAC::~ACMISAC() { - return; -} - -ACMGenericCodec* ACMISAC::CreateInstance(void) { - return NULL; -} - -int16_t ACMISAC::InternalEncode( - uint8_t* /* bitstream */, - int16_t* /* bitstream_len_byte */) { - return -1; -} - -int16_t ACMISAC::DecodeSafe(uint8_t* /* bitstream */, - int16_t /* bitstream_len_byte */, - int16_t* /* audio */, - int16_t* /* audio_samples */, - int8_t* /* speech_type */) { - return 0; -} - -int16_t ACMISAC::InternalInitEncoder( - WebRtcACMCodecParams* /* codec_params */) { - return -1; -} - -int16_t ACMISAC::InternalInitDecoder( - WebRtcACMCodecParams* /* codec_params */) { - return -1; -} - -int16_t ACMISAC::InternalCreateDecoder() { - return -1; -} - -void ACMISAC::DestructDecoderSafe() { - return; -} - -int16_t ACMISAC::InternalCreateEncoder() { - return -1; -} - -void ACMISAC::DestructEncoderSafe() { - return; -} - -int32_t ACMISAC::CodecDef(WebRtcNetEQ_CodecDef& /* codec_def */, - const CodecInst& /* codec_inst */) { - return -1; -} - -void ACMISAC::InternalDestructEncoderInst(void* /* ptr_inst */) { - return; -} - -int16_t ACMISAC::DeliverCachedIsacData( - uint8_t* /* bitstream */, - int16_t* /* bitstream_len_byte */, - uint32_t* /* timestamp */, - WebRtcACMEncodingType* /* encoding_type */, - const uint16_t /* isac_rate */, - const uint8_t /* isac_bw_estimate */) { - return -1; -} - -int16_t ACMISAC::Transcode(uint8_t* /* bitstream */, - int16_t* /* bitstream_len_byte */, - int16_t /* q_bwe */, - int32_t /* scale */, - bool /* is_red */) { - return -1; -} - -int16_t ACMISAC::SetBitRateSafe(int32_t /* bit_rate */) { - return -1; -} - -int32_t ACMISAC::GetEstimatedBandwidthSafe() { - return -1; -} - -int32_t ACMISAC::SetEstimatedBandwidthSafe( - int32_t /* estimated_bandwidth */) { - return -1; -} - -int32_t ACMISAC::GetRedPayloadSafe(uint8_t* /* red_payload */, - int16_t* /* payload_bytes */) { - return -1; -} - -int16_t ACMISAC::UpdateDecoderSampFreq(int16_t /* codec_id */) { - return -1; -} - -int16_t ACMISAC::UpdateEncoderSampFreq( - uint16_t /* encoder_samp_freq_hz */) { - return -1; -} - -int16_t ACMISAC::EncoderSampFreq(uint16_t& /* samp_freq_hz */) { - return -1; -} - -int32_t ACMISAC::ConfigISACBandwidthEstimator( - const uint8_t /* init_frame_size_msec */, - const uint16_t /* init_rate_bit_per_sec */, - const bool /* enforce_frame_size */) { - return -1; -} - -int32_t ACMISAC::SetISACMaxPayloadSize( - const uint16_t /* max_payload_len_bytes */) { - return -1; -} - -int32_t ACMISAC::SetISACMaxRate( - const uint32_t /* max_rate_bit_per_sec */) { - return -1; -} - -void ACMISAC::UpdateFrameLen() { - return; -} - -void ACMISAC::CurrentRate(int32_t& /*rate_bit_per_sec */) { - return; -} - -bool -ACMISAC::DecoderParamsSafe( - WebRtcACMCodecParams* /* dec_params */, - const uint8_t /* payload_type */) { - return false; -} - -void -ACMISAC::SaveDecoderParamSafe( - const WebRtcACMCodecParams* /* codec_params */) { - return; -} - -int16_t ACMISAC::REDPayloadISAC( - const int32_t /* isac_rate */, - const int16_t /* isac_bw_estimate */, - uint8_t* /* payload */, - int16_t* /* payload_len_bytes */) { - return -1; -} - -#else //===================== Actual Implementation ======================= - -#ifdef WEBRTC_CODEC_ISACFX - -// How the scaling is computed. iSAC computes a gain based on the -// bottleneck. It follows the following expression for that -// -// G(BN_kbps) = pow(10, (a + b * BN_kbps + c * BN_kbps * BN_kbps) / 20.0) -// / 3.4641; -// -// Where for 30 ms framelength we have, -// -// a = -23; b = 0.48; c = 0; -// -// As the default encoder is operating at 32kbps we have the scale as -// -// S(BN_kbps) = G(BN_kbps) / G(32); - -#define ISAC_NUM_SUPPORTED_RATES 9 - -static const uint16_t kIsacSuportedRates[ISAC_NUM_SUPPORTED_RATES] = { - 32000, 30000, 26000, 23000, 21000, - 19000, 17000, 15000, 12000 -}; - -static const float kIsacScale[ISAC_NUM_SUPPORTED_RATES] = { - 1.0f, 0.8954f, 0.7178f, 0.6081f, 0.5445f, - 0.4875f, 0.4365f, 0.3908f, 0.3311f -}; - -enum IsacSamplingRate { - kIsacWideband = 16, - kIsacSuperWideband = 32 -}; - -static float ACMISACFixTranscodingScale(uint16_t rate) { - // find the scale for transcoding, the scale is rounded - // downward - float scale = -1; - for (int16_t n = 0; n < ISAC_NUM_SUPPORTED_RATES; n++) { - if (rate >= kIsacSuportedRates[n]) { - scale = kIsacScale[n]; - break; - } - } - return scale; -} - -static void ACMISACFixGetSendBitrate(ACM_ISAC_STRUCT* inst, - int32_t* bottleneck) { - *bottleneck = WebRtcIsacfix_GetUplinkBw(inst); -} - -static int16_t ACMISACFixGetNewBitstream(ACM_ISAC_STRUCT* inst, - int16_t bwe_index, - int16_t /* jitter_index */, - int32_t rate, - int16_t* bitstream, - bool is_red) { - if (is_red) { - // RED not supported with iSACFIX - return -1; - } - float scale = ACMISACFixTranscodingScale((uint16_t) rate); - return WebRtcIsacfix_GetNewBitStream(inst, bwe_index, scale, bitstream); -} - -static int16_t ACMISACFixGetSendBWE(ACM_ISAC_STRUCT* inst, - int16_t* rate_index, - int16_t* /* dummy */) { - int16_t local_rate_index; - int16_t status = WebRtcIsacfix_GetDownLinkBwIndex(inst, - &local_rate_index); - if (status < 0) { - return -1; - } else { - *rate_index = local_rate_index; - return 0; - } -} - -static int16_t ACMISACFixControlBWE(ACM_ISAC_STRUCT* inst, - int32_t rate_bps, - int16_t frame_size_ms, - int16_t enforce_frame_size) { - return WebRtcIsacfix_ControlBwe(inst, (int16_t) rate_bps, frame_size_ms, - enforce_frame_size); -} - -static int16_t ACMISACFixControl(ACM_ISAC_STRUCT* inst, - int32_t rate_bps, - int16_t frame_size_ms) { - return WebRtcIsacfix_Control(inst, (int16_t) rate_bps, frame_size_ms); -} - -// The following two function should have the same signature as their counter -// part in iSAC floating-point, i.e. WebRtcIsac_EncSampRate & -// WebRtcIsac_DecSampRate. -static uint16_t ACMISACFixGetEncSampRate(ACM_ISAC_STRUCT* /* inst */) { - return 16000; -} - -static uint16_t ACMISACFixGetDecSampRate(ACM_ISAC_STRUCT* /* inst */) { - return 16000; -} - -#endif - -ACMISAC::ACMISAC(int16_t codec_id) - : is_enc_initialized_(false), - isac_coding_mode_(CHANNEL_INDEPENDENT), - enforce_frame_size_(false), - isac_current_bn_(32000), - samples_in_10ms_audio_(160) { // Initiates to 16 kHz mode. - codec_id_ = codec_id; - - // Create codec instance. - codec_inst_ptr_ = new ACMISACInst; - if (codec_inst_ptr_ == NULL) { - return; - } - codec_inst_ptr_->inst = NULL; - - // Initiate decoder parameters for the 32 kHz mode. - memset(&decoder_params_32khz_, 0, sizeof(WebRtcACMCodecParams)); - decoder_params_32khz_.codec_inst.pltype = -1; - - // TODO(tlegrand): Check if the following is really needed, now that - // ACMGenericCodec has been updated to initialize this value. - // Initialize values that can be used uninitialized otherwise - decoder_params_.codec_inst.pltype = -1; -} - -ACMISAC::~ACMISAC() { - if (codec_inst_ptr_ != NULL) { - if (codec_inst_ptr_->inst != NULL) { - ACM_ISAC_FREE(codec_inst_ptr_->inst); - codec_inst_ptr_->inst = NULL; - } - delete codec_inst_ptr_; - codec_inst_ptr_ = NULL; - } - return; -} - -ACMGenericCodec* ACMISAC::CreateInstance(void) { - return NULL; -} - -int16_t ACMISAC::InternalEncode(uint8_t* bitstream, - int16_t* bitstream_len_byte) { - // ISAC takes 10ms audio everytime we call encoder, therefor, - // it should be treated like codecs with 'basic coding block' - // non-zero, and the following 'while-loop' should not be necessary. - // However, due to a mistake in the codec the frame-size might change - // at the first 10ms pushed in to iSAC if the bit-rate is low, this is - // sort of a bug in iSAC. to address this we treat iSAC as the - // following. - if (codec_inst_ptr_ == NULL) { - return -1; - } - *bitstream_len_byte = 0; - while ((*bitstream_len_byte == 0) && (in_audio_ix_read_ < frame_len_smpl_)) { - if (in_audio_ix_read_ > in_audio_ix_write_) { - // something is wrong. - WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, - "The actual fram-size of iSAC appears to be larger that " - "expected. All audio pushed in but no bit-stream is " - "generated."); - return -1; - } - *bitstream_len_byte = ACM_ISAC_ENCODE(codec_inst_ptr_->inst, - &in_audio_[in_audio_ix_read_], - (int16_t*)bitstream); - // increment the read index this tell the caller that how far - // we have gone forward in reading the audio buffer - in_audio_ix_read_ += samples_in_10ms_audio_; - } - if (*bitstream_len_byte == 0) { - WEBRTC_TRACE(webrtc::kTraceWarning, webrtc::kTraceAudioCoding, unique_id_, - "ISAC Has encoded the whole frame but no bit-stream is " - "generated."); - } - - // a packet is generated iSAC, is set in adaptive mode may change - // the frame length and we like to update the bottleneck value as - // well, although updating bottleneck is not crucial - if ((*bitstream_len_byte > 0) && (isac_coding_mode_ == ADAPTIVE)) { - ACM_ISAC_GETSENDBITRATE(codec_inst_ptr_->inst, &isac_current_bn_); - } - UpdateFrameLen(); - return *bitstream_len_byte; -} - -int16_t ACMISAC::DecodeSafe(uint8_t* /* bitstream */, - int16_t /* bitstream_len_byte */, - int16_t* /* audio */, - int16_t* /* audio_sample */, - int8_t* /* speech_type */) { - return 0; -} - -int16_t ACMISAC::InternalInitEncoder(WebRtcACMCodecParams* codec_params) { - // if rate is set to -1 then iSAC has to be in adaptive mode - if (codec_params->codec_inst.rate == -1) { - isac_coding_mode_ = ADAPTIVE; - } else if ((codec_params->codec_inst.rate >= ISAC_MIN_RATE) && - (codec_params->codec_inst.rate <= ISAC_MAX_RATE)) { - // sanity check that rate is in acceptable range - isac_coding_mode_ = CHANNEL_INDEPENDENT; - isac_current_bn_ = codec_params->codec_inst.rate; - } else { - return -1; - } - - // we need to set the encoder sampling frequency. - if (UpdateEncoderSampFreq((uint16_t) codec_params->codec_inst.plfreq) - < 0) { - return -1; - } - if (ACM_ISAC_ENCODERINIT(codec_inst_ptr_->inst, isac_coding_mode_) < 0) { - return -1; - } - - // apply the frame-size and rate if operating in - // channel-independent mode - if (isac_coding_mode_ == CHANNEL_INDEPENDENT) { - if (ACM_ISAC_CONTROL(codec_inst_ptr_->inst, - codec_params->codec_inst.rate, - codec_params->codec_inst.pacsize / - (codec_params->codec_inst.plfreq / 1000)) < 0) { - return -1; - } - } else { - // We need this for adaptive case and has to be called - // after initialization - ACM_ISAC_GETSENDBITRATE(codec_inst_ptr_->inst, &isac_current_bn_); - } - frame_len_smpl_ = ACM_ISAC_GETNEWFRAMELEN(codec_inst_ptr_->inst); - return 0; -} - -int16_t ACMISAC::InternalInitDecoder(WebRtcACMCodecParams* codec_params) { - if (codec_inst_ptr_ == NULL) { - return -1; - } - - // set decoder sampling frequency. - if (codec_params->codec_inst.plfreq == 32000 || - codec_params->codec_inst.plfreq == 48000) { - UpdateDecoderSampFreq(ACMCodecDB::kISACSWB); - } else { - UpdateDecoderSampFreq(ACMCodecDB::kISAC); - } - - // in a one-way communication we may never register send-codec. - // However we like that the BWE to work properly so it has to - // be initialized. The BWE is initialized when iSAC encoder is initialized. - // Therefore, we need this. - if (!encoder_initialized_) { - // Since we don't require a valid rate or a valid packet size when - // initializing the decoder, we set valid values before initializing encoder - codec_params->codec_inst.rate = kIsacWbDefaultRate; - codec_params->codec_inst.pacsize = kIsacPacSize960; - if (InternalInitEncoder(codec_params) < 0) { - return -1; - } - encoder_initialized_ = true; - } - - return ACM_ISAC_DECODERINIT(codec_inst_ptr_->inst); -} - -int16_t ACMISAC::InternalCreateDecoder() { - if (codec_inst_ptr_ == NULL) { - return -1; - } - int16_t status = ACM_ISAC_CREATE(&(codec_inst_ptr_->inst)); - - // specific to codecs with one instance for encoding and decoding - encoder_initialized_ = false; - if (status < 0) { - encoder_exist_ = false; - } else { - encoder_exist_ = true; - } - return status; -} - -void ACMISAC::DestructDecoderSafe() { - // codec with shared instance cannot delete. - decoder_initialized_ = false; - return; -} - -int16_t ACMISAC::InternalCreateEncoder() { - if (codec_inst_ptr_ == NULL) { - return -1; - } - int16_t status = ACM_ISAC_CREATE(&(codec_inst_ptr_->inst)); - - // specific to codecs with one instance for encoding and decoding - decoder_initialized_ = false; - if (status < 0) { - decoder_exist_ = false; - } else { - decoder_exist_ = true; - } - return status; -} - -void ACMISAC::DestructEncoderSafe() { - // codec with shared instance cannot delete. - encoder_initialized_ = false; - return; -} - -int32_t ACMISAC::CodecDef(WebRtcNetEQ_CodecDef& codec_def, - const CodecInst& codec_inst) { - // Sanity checks - if (codec_inst_ptr_ == NULL) { - return -1; - } - if (!decoder_initialized_ || !decoder_exist_) { - return -1; - } - // Fill up the structure by calling - // "SET_CODEC_PAR" & "SET_ISAC_FUNCTION." - // Then call NetEQ to add the codec to it's - // database. - if (codec_inst.plfreq == 16000) { - SET_CODEC_PAR((codec_def), kDecoderISAC, codec_inst.pltype, - codec_inst_ptr_->inst, 16000); -#ifdef WEBRTC_CODEC_ISAC - SET_ISAC_FUNCTIONS((codec_def)); -#else - SET_ISACfix_FUNCTIONS((codec_def)); -#endif - } else { -#ifdef WEBRTC_CODEC_ISAC - // Decoder is either @ 16 kHz or 32 kHz. Even if encoder is set @ 48 kHz - // decoding is @ 32 kHz. - if (codec_inst.plfreq == 32000) { - SET_CODEC_PAR((codec_def), kDecoderISACswb, codec_inst.pltype, - codec_inst_ptr_->inst, 32000); - SET_ISACSWB_FUNCTIONS((codec_def)); - } else { - SET_CODEC_PAR((codec_def), kDecoderISACfb, codec_inst.pltype, - codec_inst_ptr_->inst, 32000); - SET_ISACFB_FUNCTIONS((codec_def)); - } -#else - return -1; -#endif - } - return 0; -} - -void ACMISAC::InternalDestructEncoderInst(void* ptr_inst) { - if (ptr_inst != NULL) { - ACM_ISAC_FREE((ACM_ISAC_STRUCT *) ptr_inst); - } - return; -} - -int16_t ACMISAC::Transcode(uint8_t* bitstream, - int16_t* bitstream_len_byte, - int16_t q_bwe, - int32_t rate, - bool is_red) { - int16_t jitter_info = 0; - // transcode from a higher rate to lower rate sanity check - if (codec_inst_ptr_ == NULL) { - return -1; - } - - *bitstream_len_byte = ACM_ISAC_GETNEWBITSTREAM(codec_inst_ptr_->inst, q_bwe, - jitter_info, rate, - (int16_t*)bitstream, - (is_red) ? 1 : 0); - - if (*bitstream_len_byte < 0) { - // error happened - *bitstream_len_byte = 0; - return -1; - } else { - return *bitstream_len_byte; - } -} - -int16_t ACMISAC::SetBitRateSafe(int32_t bit_rate) { - if (codec_inst_ptr_ == NULL) { - return -1; - } - uint16_t encoder_samp_freq; - EncoderSampFreq(encoder_samp_freq); - bool reinit = false; - // change the BN of iSAC - if (bit_rate == -1) { - // ADAPTIVE MODE - // Check if it was already in adaptive mode - if (isac_coding_mode_ != ADAPTIVE) { - // was not in adaptive, then set the mode to adaptive - // and flag for re-initialization - isac_coding_mode_ = ADAPTIVE; - reinit = true; - } - } else if ((bit_rate >= ISAC_MIN_RATE) && (bit_rate <= ISAC_MAX_RATE)) { - // Sanity check if the rate valid - // check if it was in channel-independent mode before - if (isac_coding_mode_ != CHANNEL_INDEPENDENT) { - // was not in channel independent, set the mode to - // channel-independent and flag for re-initialization - isac_coding_mode_ = CHANNEL_INDEPENDENT; - reinit = true; - } - // store the bottleneck - isac_current_bn_ = (uint16_t) bit_rate; - } else { - // invlaid rate - return -1; - } - - int16_t status = 0; - if (reinit) { - // initialize and check if it is successful - if (ACM_ISAC_ENCODERINIT(codec_inst_ptr_->inst, isac_coding_mode_) < 0) { - // failed initialization - return -1; - } - } - if (isac_coding_mode_ == CHANNEL_INDEPENDENT) { - status = ACM_ISAC_CONTROL( - codec_inst_ptr_->inst, isac_current_bn_, - (encoder_samp_freq == 32000 || encoder_samp_freq == 48000) ? 30 : - (frame_len_smpl_ / 16)); - if (status < 0) { - status = -1; - } - } - - // Update encoder parameters - encoder_params_.codec_inst.rate = bit_rate; - - UpdateFrameLen(); - return status; -} - -int32_t ACMISAC::GetEstimatedBandwidthSafe() { - int16_t bandwidth_index = 0; - int16_t delay_index = 0; - int samp_rate; - - // Get bandwidth information - ACM_ISAC_GETSENDBWE(codec_inst_ptr_->inst, &bandwidth_index, &delay_index); - - // Validy check of index - if ((bandwidth_index < 0) || (bandwidth_index >= NR_ISAC_BANDWIDTHS)) { - return -1; - } - - // Check sample frequency - samp_rate = ACM_ISAC_GETDECSAMPRATE(codec_inst_ptr_->inst); - if (samp_rate == 16000) { - return kIsacRatesWb[bandwidth_index]; - } else { - return kIsacRatesSwb[bandwidth_index]; - } -} - -int32_t ACMISAC::SetEstimatedBandwidthSafe( - int32_t estimated_bandwidth) { - int samp_rate; - int16_t bandwidth_index; - - // Check sample frequency and choose appropriate table - samp_rate = ACM_ISAC_GETENCSAMPRATE(codec_inst_ptr_->inst); - - if (samp_rate == 16000) { - // Search through the WB rate table to find the index - bandwidth_index = NR_ISAC_BANDWIDTHS / 2 - 1; - for (int i = 0; i < (NR_ISAC_BANDWIDTHS / 2); i++) { - if (estimated_bandwidth == kIsacRatesWb[i]) { - bandwidth_index = i; - break; - } else if (estimated_bandwidth - == kIsacRatesWb[i + NR_ISAC_BANDWIDTHS / 2]) { - bandwidth_index = i + NR_ISAC_BANDWIDTHS / 2; - break; - } else if (estimated_bandwidth < kIsacRatesWb[i]) { - bandwidth_index = i; - break; - } - } - } else { - // Search through the SWB rate table to find the index - bandwidth_index = NR_ISAC_BANDWIDTHS - 1; - for (int i = 0; i < NR_ISAC_BANDWIDTHS; i++) { - if (estimated_bandwidth <= kIsacRatesSwb[i]) { - bandwidth_index = i; - break; - } - } - } - - // Set iSAC Bandwidth Estimate - ACM_ISAC_SETBWE(codec_inst_ptr_->inst, bandwidth_index); - - return 0; -} - -int32_t ACMISAC::GetRedPayloadSafe( -#if (!defined(WEBRTC_CODEC_ISAC)) - uint8_t* /* red_payload */, int16_t* /* payload_bytes */) { - return -1; -#else - uint8_t* red_payload, int16_t* payload_bytes) { - int16_t bytes = WebRtcIsac_GetRedPayload(codec_inst_ptr_->inst, - (int16_t*)red_payload); - if (bytes < 0) { - return -1; - } - *payload_bytes = bytes; - return 0; -#endif -} - -int16_t ACMISAC::UpdateDecoderSampFreq( -#ifdef WEBRTC_CODEC_ISAC - int16_t codec_id) { - // The decoder supports only wideband and super-wideband. - if (ACMCodecDB::kISAC == codec_id) { - return WebRtcIsac_SetDecSampRate(codec_inst_ptr_->inst, 16000); - } else if (ACMCodecDB::kISACSWB == codec_id || - ACMCodecDB::kISACFB == codec_id) { - return WebRtcIsac_SetDecSampRate(codec_inst_ptr_->inst, 32000); - } else { - return -1; - } -#else - int16_t /* codec_id */) { - return 0; -#endif -} - -int16_t ACMISAC::UpdateEncoderSampFreq( -#ifdef WEBRTC_CODEC_ISAC - uint16_t encoder_samp_freq_hz) { - uint16_t current_samp_rate_hz; - EncoderSampFreq(current_samp_rate_hz); - - if (current_samp_rate_hz != encoder_samp_freq_hz) { - if ((encoder_samp_freq_hz != 16000) && - (encoder_samp_freq_hz != 32000) && - (encoder_samp_freq_hz != 48000)) { - return -1; - } else { - in_audio_ix_read_ = 0; - in_audio_ix_write_ = 0; - in_timestamp_ix_write_ = 0; - if (WebRtcIsac_SetEncSampRate(codec_inst_ptr_->inst, - encoder_samp_freq_hz) < 0) { - return -1; - } - samples_in_10ms_audio_ = encoder_samp_freq_hz / 100; - frame_len_smpl_ = ACM_ISAC_GETNEWFRAMELEN(codec_inst_ptr_->inst); - encoder_params_.codec_inst.pacsize = frame_len_smpl_; - encoder_params_.codec_inst.plfreq = encoder_samp_freq_hz; - return 0; - } - } -#else - uint16_t /* codec_id */) { -#endif - return 0; -} - -int16_t ACMISAC::EncoderSampFreq(uint16_t& samp_freq_hz) { - samp_freq_hz = ACM_ISAC_GETENCSAMPRATE(codec_inst_ptr_->inst); - return 0; -} - -int32_t ACMISAC::ConfigISACBandwidthEstimator( - const uint8_t init_frame_size_msec, - const uint16_t init_rate_bit_per_sec, - const bool enforce_frame_size) { - int16_t status; - { - uint16_t samp_freq_hz; - EncoderSampFreq(samp_freq_hz); - // TODO(turajs): at 32kHz we hardcode calling with 30ms and enforce - // the frame-size otherwise we might get error. Revise if - // control-bwe is changed. - if (samp_freq_hz == 32000 || samp_freq_hz == 48000) { - status = ACM_ISAC_CONTROL_BWE(codec_inst_ptr_->inst, - init_rate_bit_per_sec, 30, 1); - } else { - status = ACM_ISAC_CONTROL_BWE(codec_inst_ptr_->inst, - init_rate_bit_per_sec, - init_frame_size_msec, - enforce_frame_size ? 1 : 0); - } - } - if (status < 0) { - WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, - "Couldn't config iSAC BWE."); - return -1; - } - UpdateFrameLen(); - ACM_ISAC_GETSENDBITRATE(codec_inst_ptr_->inst, &isac_current_bn_); - return 0; -} - -int32_t ACMISAC::SetISACMaxPayloadSize( - const uint16_t max_payload_len_bytes) { - return ACM_ISAC_SETMAXPAYLOADSIZE(codec_inst_ptr_->inst, - max_payload_len_bytes); -} - -int32_t ACMISAC::SetISACMaxRate( - const uint32_t max_rate_bit_per_sec) { - return ACM_ISAC_SETMAXRATE(codec_inst_ptr_->inst, max_rate_bit_per_sec); -} - -void ACMISAC::UpdateFrameLen() { - frame_len_smpl_ = ACM_ISAC_GETNEWFRAMELEN(codec_inst_ptr_->inst); - encoder_params_.codec_inst.pacsize = frame_len_smpl_; -} - -void ACMISAC::CurrentRate(int32_t& rate_bit_per_sec) { - if (isac_coding_mode_ == ADAPTIVE) { - ACM_ISAC_GETSENDBITRATE(codec_inst_ptr_->inst, &rate_bit_per_sec); - } -} - -bool ACMISAC::DecoderParamsSafe(WebRtcACMCodecParams* dec_params, - const uint8_t payload_type) { - if (decoder_initialized_) { - if (payload_type == decoder_params_.codec_inst.pltype) { - memcpy(dec_params, &decoder_params_, sizeof(WebRtcACMCodecParams)); - return true; - } - if (payload_type == decoder_params_32khz_.codec_inst.pltype) { - memcpy(dec_params, &decoder_params_32khz_, sizeof(WebRtcACMCodecParams)); - return true; - } - } - return false; -} - -void ACMISAC::SaveDecoderParamSafe(const WebRtcACMCodecParams* codec_params) { - // set decoder sampling frequency. - if (codec_params->codec_inst.plfreq == 32000 || - codec_params->codec_inst.plfreq == 48000) { - memcpy(&decoder_params_32khz_, codec_params, sizeof(WebRtcACMCodecParams)); - } else { - memcpy(&decoder_params_, codec_params, sizeof(WebRtcACMCodecParams)); - } -} - -int16_t ACMISAC::REDPayloadISAC(const int32_t isac_rate, - const int16_t isac_bw_estimate, - uint8_t* payload, - int16_t* payload_len_bytes) { - int16_t status; - ReadLockScoped rl(codec_wrapper_lock_); - status = Transcode(payload, payload_len_bytes, isac_bw_estimate, isac_rate, - true); - return status; -} - -#endif - -} // namespace acm1 - -} // namespace webrtc |