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92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_coding/neteq/decision_logic_fax.h"
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#include <assert.h>
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#include <algorithm>
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#include "modules/audio_coding/neteq/decoder_database.h"
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#include "modules/audio_coding/neteq/sync_buffer.h"
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namespace webrtc {
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Operations DecisionLogicFax::GetDecisionSpecialized(
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const SyncBuffer& sync_buffer,
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const Expand& expand,
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size_t decoder_frame_length,
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const Packet* next_packet,
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Modes prev_mode,
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bool play_dtmf,
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bool* reset_decoder,
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size_t generated_noise_samples) {
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assert(playout_mode_ == kPlayoutFax || playout_mode_ == kPlayoutOff);
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uint32_t target_timestamp = sync_buffer.end_timestamp();
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uint32_t available_timestamp = 0;
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int is_cng_packet = 0;
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if (next_packet) {
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available_timestamp = next_packet->timestamp;
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is_cng_packet =
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decoder_database_->IsComfortNoise(next_packet->payload_type);
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}
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if (is_cng_packet) {
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if (static_cast<int32_t>((generated_noise_samples + target_timestamp)
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- available_timestamp) >= 0) {
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// Time to play this packet now.
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return kRfc3389Cng;
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} else {
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// Wait before playing this packet.
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return kRfc3389CngNoPacket;
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}
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}
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if (!next_packet) {
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// No packet. If in CNG mode, play as usual. Otherwise, use other method to
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// generate data.
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if (cng_state_ == kCngRfc3389On) {
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// Continue playing comfort noise.
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return kRfc3389CngNoPacket;
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} else if (cng_state_ == kCngInternalOn) {
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// Continue playing codec-internal comfort noise.
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return kCodecInternalCng;
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} else {
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// Nothing to play. Generate some data to play out.
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switch (playout_mode_) {
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case kPlayoutOff:
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return kAlternativePlc;
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case kPlayoutFax:
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return kAudioRepetition;
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default:
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assert(false);
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return kUndefined;
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}
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}
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} else if (target_timestamp == available_timestamp) {
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return kNormal;
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} else {
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if (static_cast<int32_t>((generated_noise_samples + target_timestamp)
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- available_timestamp) >= 0) {
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return kNormal;
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} else {
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// If currently playing comfort noise, continue with that. Do not
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// increase the timestamp counter since generated_noise_stopwatch_ in
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// NetEqImpl will take care of the time-keeping.
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if (cng_state_ == kCngRfc3389On) {
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return kRfc3389CngNoPacket;
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} else if (cng_state_ == kCngInternalOn) {
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return kCodecInternalCng;
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} else {
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// Otherwise, do packet-loss concealment and increase the
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// timestamp while waiting for the time to play this packet.
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switch (playout_mode_) {
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case kPlayoutOff:
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return kAlternativePlcIncreaseTimestamp;
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case kPlayoutFax:
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return kAudioRepetitionIncreaseTimestamp;
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default:
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assert(0);
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return kUndefined;
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}
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}
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}
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}
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}
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} // namespace webrtc
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