Moving src/webrtc into src/.
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
This commit is contained in:
Mirko Bonadei
committed by
Commit Bot
Commit Bot
parent
6674846b4a
commit
bb547203bf
170
modules/audio_coding/neteq/decision_logic.cc
Normal file
170
modules/audio_coding/neteq/decision_logic.cc
Normal file
@ -0,0 +1,170 @@
|
||||
/*
|
||||
* Copyright (c) 2013 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/neteq/decision_logic.h"
|
||||
|
||||
#include <algorithm>
|
||||
|
||||
#include "webrtc/modules/audio_coding/neteq/buffer_level_filter.h"
|
||||
#include "webrtc/modules/audio_coding/neteq/decision_logic_fax.h"
|
||||
#include "webrtc/modules/audio_coding/neteq/decision_logic_normal.h"
|
||||
#include "webrtc/modules/audio_coding/neteq/delay_manager.h"
|
||||
#include "webrtc/modules/audio_coding/neteq/expand.h"
|
||||
#include "webrtc/modules/audio_coding/neteq/packet_buffer.h"
|
||||
#include "webrtc/modules/audio_coding/neteq/sync_buffer.h"
|
||||
|
||||
namespace webrtc {
|
||||
|
||||
DecisionLogic* DecisionLogic::Create(int fs_hz,
|
||||
size_t output_size_samples,
|
||||
NetEqPlayoutMode playout_mode,
|
||||
DecoderDatabase* decoder_database,
|
||||
const PacketBuffer& packet_buffer,
|
||||
DelayManager* delay_manager,
|
||||
BufferLevelFilter* buffer_level_filter,
|
||||
const TickTimer* tick_timer) {
|
||||
switch (playout_mode) {
|
||||
case kPlayoutOn:
|
||||
case kPlayoutStreaming:
|
||||
return new DecisionLogicNormal(
|
||||
fs_hz, output_size_samples, playout_mode, decoder_database,
|
||||
packet_buffer, delay_manager, buffer_level_filter, tick_timer);
|
||||
case kPlayoutFax:
|
||||
case kPlayoutOff:
|
||||
return new DecisionLogicFax(
|
||||
fs_hz, output_size_samples, playout_mode, decoder_database,
|
||||
packet_buffer, delay_manager, buffer_level_filter, tick_timer);
|
||||
}
|
||||
// This line cannot be reached, but must be here to avoid compiler errors.
|
||||
assert(false);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
DecisionLogic::DecisionLogic(int fs_hz,
|
||||
size_t output_size_samples,
|
||||
NetEqPlayoutMode playout_mode,
|
||||
DecoderDatabase* decoder_database,
|
||||
const PacketBuffer& packet_buffer,
|
||||
DelayManager* delay_manager,
|
||||
BufferLevelFilter* buffer_level_filter,
|
||||
const TickTimer* tick_timer)
|
||||
: decoder_database_(decoder_database),
|
||||
packet_buffer_(packet_buffer),
|
||||
delay_manager_(delay_manager),
|
||||
buffer_level_filter_(buffer_level_filter),
|
||||
tick_timer_(tick_timer),
|
||||
cng_state_(kCngOff),
|
||||
packet_length_samples_(0),
|
||||
sample_memory_(0),
|
||||
prev_time_scale_(false),
|
||||
timescale_countdown_(
|
||||
tick_timer_->GetNewCountdown(kMinTimescaleInterval + 1)),
|
||||
num_consecutive_expands_(0),
|
||||
playout_mode_(playout_mode) {
|
||||
delay_manager_->set_streaming_mode(playout_mode_ == kPlayoutStreaming);
|
||||
SetSampleRate(fs_hz, output_size_samples);
|
||||
}
|
||||
|
||||
DecisionLogic::~DecisionLogic() = default;
|
||||
|
||||
void DecisionLogic::Reset() {
|
||||
cng_state_ = kCngOff;
|
||||
noise_fast_forward_ = 0;
|
||||
packet_length_samples_ = 0;
|
||||
sample_memory_ = 0;
|
||||
prev_time_scale_ = false;
|
||||
timescale_countdown_.reset();
|
||||
num_consecutive_expands_ = 0;
|
||||
}
|
||||
|
||||
void DecisionLogic::SoftReset() {
|
||||
packet_length_samples_ = 0;
|
||||
sample_memory_ = 0;
|
||||
prev_time_scale_ = false;
|
||||
timescale_countdown_ =
|
||||
tick_timer_->GetNewCountdown(kMinTimescaleInterval + 1);
|
||||
}
|
||||
|
||||
void DecisionLogic::SetSampleRate(int fs_hz, size_t output_size_samples) {
|
||||
// TODO(hlundin): Change to an enumerator and skip assert.
|
||||
assert(fs_hz == 8000 || fs_hz == 16000 || fs_hz == 32000 || fs_hz == 48000);
|
||||
fs_mult_ = fs_hz / 8000;
|
||||
output_size_samples_ = output_size_samples;
|
||||
}
|
||||
|
||||
Operations DecisionLogic::GetDecision(const SyncBuffer& sync_buffer,
|
||||
const Expand& expand,
|
||||
size_t decoder_frame_length,
|
||||
const Packet* next_packet,
|
||||
Modes prev_mode,
|
||||
bool play_dtmf,
|
||||
size_t generated_noise_samples,
|
||||
bool* reset_decoder) {
|
||||
// If last mode was CNG (or Expand, since this could be covering up for
|
||||
// a lost CNG packet), remember that CNG is on. This is needed if comfort
|
||||
// noise is interrupted by DTMF.
|
||||
if (prev_mode == kModeRfc3389Cng) {
|
||||
cng_state_ = kCngRfc3389On;
|
||||
} else if (prev_mode == kModeCodecInternalCng) {
|
||||
cng_state_ = kCngInternalOn;
|
||||
}
|
||||
|
||||
const size_t samples_left =
|
||||
sync_buffer.FutureLength() - expand.overlap_length();
|
||||
const size_t cur_size_samples =
|
||||
samples_left + packet_buffer_.NumSamplesInBuffer(decoder_frame_length);
|
||||
|
||||
prev_time_scale_ = prev_time_scale_ &&
|
||||
(prev_mode == kModeAccelerateSuccess ||
|
||||
prev_mode == kModeAccelerateLowEnergy ||
|
||||
prev_mode == kModePreemptiveExpandSuccess ||
|
||||
prev_mode == kModePreemptiveExpandLowEnergy);
|
||||
|
||||
FilterBufferLevel(cur_size_samples, prev_mode);
|
||||
|
||||
return GetDecisionSpecialized(sync_buffer, expand, decoder_frame_length,
|
||||
next_packet, prev_mode, play_dtmf,
|
||||
reset_decoder, generated_noise_samples);
|
||||
}
|
||||
|
||||
void DecisionLogic::ExpandDecision(Operations operation) {
|
||||
if (operation == kExpand) {
|
||||
num_consecutive_expands_++;
|
||||
} else {
|
||||
num_consecutive_expands_ = 0;
|
||||
}
|
||||
}
|
||||
|
||||
void DecisionLogic::FilterBufferLevel(size_t buffer_size_samples,
|
||||
Modes prev_mode) {
|
||||
// Do not update buffer history if currently playing CNG since it will bias
|
||||
// the filtered buffer level.
|
||||
if ((prev_mode != kModeRfc3389Cng) && (prev_mode != kModeCodecInternalCng)) {
|
||||
buffer_level_filter_->SetTargetBufferLevel(
|
||||
delay_manager_->base_target_level());
|
||||
|
||||
size_t buffer_size_packets = 0;
|
||||
if (packet_length_samples_ > 0) {
|
||||
// Calculate size in packets.
|
||||
buffer_size_packets = buffer_size_samples / packet_length_samples_;
|
||||
}
|
||||
int sample_memory_local = 0;
|
||||
if (prev_time_scale_) {
|
||||
sample_memory_local = sample_memory_;
|
||||
timescale_countdown_ =
|
||||
tick_timer_->GetNewCountdown(kMinTimescaleInterval);
|
||||
}
|
||||
buffer_level_filter_->Update(buffer_size_packets, sample_memory_local,
|
||||
packet_length_samples_);
|
||||
prev_time_scale_ = false;
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace webrtc
|
||||
Reference in New Issue
Block a user