dce40cf804
use of int16_t/uint16_t. This is the upshot of a recommendation by henrik.lundin and kwiberg on an original small change ( https://webrtc-codereview.appspot.com/42569004/#ps1 ) to stop using int16_t just because values could fit in it, and is similar in nature to a previous "mass change to use size_t more" ( https://webrtc-codereview.appspot.com/23129004/ ) which also needed to be split up for review but to land all at once, since, like adding "const", such changes tend to cause a lot of transitive effects. This was be reviewed and approved in pieces: https://codereview.webrtc.org/1224093003 https://codereview.webrtc.org/1224123002 https://codereview.webrtc.org/1224163002 https://codereview.webrtc.org/1225133003 https://codereview.webrtc.org/1225173002 https://codereview.webrtc.org/1227163003 https://codereview.webrtc.org/1227203003 https://codereview.webrtc.org/1227213002 https://codereview.webrtc.org/1227893002 https://codereview.webrtc.org/1228793004 https://codereview.webrtc.org/1228803003 https://codereview.webrtc.org/1228823002 https://codereview.webrtc.org/1228823003 https://codereview.webrtc.org/1228843002 https://codereview.webrtc.org/1230693002 https://codereview.webrtc.org/1231713002 The change is being landed as TBR to all the folks who reviewed the above. BUG=chromium:81439 TEST=none R=andrew@webrtc.org, pbos@webrtc.org TBR=aluebs, andrew, asapersson, henrika, hlundin, jan.skoglund, kwiberg, minyue, pbos, pthatcher Review URL: https://codereview.webrtc.org/1230503003 . Cr-Commit-Position: refs/heads/master@{#9768}
103 lines
3.2 KiB
C++
103 lines
3.2 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 "webrtc/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 "webrtc/modules/audio_coding/neteq/decoder_database.h"
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#include "webrtc/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 RTPHeader* packet_header,
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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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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 (packet_header) {
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available_timestamp = packet_header->timestamp;
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is_cng_packet =
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decoder_database_->IsComfortNoise(packet_header->payloadType);
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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 (!packet_header) {
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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_samples_ will
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// be increased.
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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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