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44c21f48ee
Follows https://webrtc-review.googlesource.com/c/src/+/129768 closely. Adds an ENCODER and sets it up to parse SDP config for multistream opus. E.g. this is the new SDP syntax for 6.1 surround sound: "multiopus/48000/6 channel_mapping=0,4,1,2,3,5 num_streams=4 coupled_streams=2" Bug: webrtc:8649 Change-Id: I3fc341e76f5c41dab0243cf65f6461e4c3d9d67d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132001 Commit-Queue: Alex Loiko <aleloi@webrtc.org> Reviewed-by: Oskar Sundbom <ossu@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27775}
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
/*
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* Copyright (c) 2017 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 "api/audio_codecs/opus/audio_encoder_opus_config.h"
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namespace webrtc {
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namespace {
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#if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS) || defined(WEBRTC_ARCH_ARM)
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// If we are on Android, iOS and/or ARM, use a lower complexity setting by
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// default, to save encoder complexity.
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constexpr int kDefaultComplexity = 5;
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#else
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constexpr int kDefaultComplexity = 9;
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#endif
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constexpr int kDefaultLowRateComplexity =
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WEBRTC_OPUS_VARIABLE_COMPLEXITY ? 9 : kDefaultComplexity;
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} // namespace
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constexpr int AudioEncoderOpusConfig::kDefaultFrameSizeMs;
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constexpr int AudioEncoderOpusConfig::kMinBitrateBps;
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constexpr int AudioEncoderOpusConfig::kMaxBitrateBps;
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AudioEncoderOpusConfig::AudioEncoderOpusConfig()
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: frame_size_ms(kDefaultFrameSizeMs),
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num_channels(1),
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application(ApplicationMode::kVoip),
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bitrate_bps(32000),
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fec_enabled(false),
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cbr_enabled(false),
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max_playback_rate_hz(48000),
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complexity(kDefaultComplexity),
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low_rate_complexity(kDefaultLowRateComplexity),
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complexity_threshold_bps(12500),
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complexity_threshold_window_bps(1500),
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dtx_enabled(false),
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uplink_bandwidth_update_interval_ms(200),
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payload_type(-1) {}
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AudioEncoderOpusConfig::AudioEncoderOpusConfig(const AudioEncoderOpusConfig&) =
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default;
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AudioEncoderOpusConfig::~AudioEncoderOpusConfig() = default;
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AudioEncoderOpusConfig& AudioEncoderOpusConfig::operator=(
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const AudioEncoderOpusConfig&) = default;
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bool AudioEncoderOpusConfig::IsOk() const {
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if (frame_size_ms <= 0 || frame_size_ms % 10 != 0)
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return false;
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if (num_channels < 0 || num_channels >= 255) {
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return false;
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}
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if (!bitrate_bps)
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return false;
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if (*bitrate_bps < kMinBitrateBps || *bitrate_bps > kMaxBitrateBps)
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return false;
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if (complexity < 0 || complexity > 10)
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return false;
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if (low_rate_complexity < 0 || low_rate_complexity > 10)
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return false;
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return true;
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}
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} // namespace webrtc
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