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}
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modules/audio_coding/acm2/rent_a_codec.h
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207
modules/audio_coding/acm2/rent_a_codec.h
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/*
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* Copyright (c) 2015 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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#ifndef WEBRTC_MODULES_AUDIO_CODING_ACM2_RENT_A_CODEC_H_
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#define WEBRTC_MODULES_AUDIO_CODING_ACM2_RENT_A_CODEC_H_
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#include <stddef.h>
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#include <map>
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#include <memory>
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#include "webrtc/api/array_view.h"
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#include "webrtc/api/audio_codecs/audio_decoder.h"
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#include "webrtc/api/audio_codecs/audio_encoder.h"
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#include "webrtc/api/optional.h"
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#include "webrtc/modules/audio_coding/include/audio_coding_module_typedefs.h"
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#include "webrtc/modules/audio_coding/neteq/neteq_decoder_enum.h"
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#include "webrtc/rtc_base/constructormagic.h"
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#include "webrtc/rtc_base/scoped_ref_ptr.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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struct CodecInst;
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class LockedIsacBandwidthInfo;
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namespace acm2 {
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class RentACodec {
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public:
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enum class CodecId {
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#if defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX)
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kISAC,
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#endif
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#ifdef WEBRTC_CODEC_ISAC
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kISACSWB,
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#endif
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// Mono
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kPCM16B,
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kPCM16Bwb,
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kPCM16Bswb32kHz,
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// Stereo
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kPCM16B_2ch,
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kPCM16Bwb_2ch,
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kPCM16Bswb32kHz_2ch,
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// Mono
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kPCMU,
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kPCMA,
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// Stereo
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kPCMU_2ch,
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kPCMA_2ch,
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#ifdef WEBRTC_CODEC_ILBC
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kILBC,
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#endif
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#ifdef WEBRTC_CODEC_G722
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kG722, // Mono
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kG722_2ch, // Stereo
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#endif
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#ifdef WEBRTC_CODEC_OPUS
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kOpus, // Mono and stereo
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#endif
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kCNNB,
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kCNWB,
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kCNSWB,
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#ifdef ENABLE_48000_HZ
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kCNFB,
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#endif
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kAVT,
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kAVT16kHz,
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kAVT32kHz,
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kAVT48kHz,
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#ifdef WEBRTC_CODEC_RED
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kRED,
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#endif
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kNumCodecs, // Implementation detail. Don't use.
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// Set unsupported codecs to -1.
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#if !defined(WEBRTC_CODEC_ISAC) && !defined(WEBRTC_CODEC_ISACFX)
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kISAC = -1,
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#endif
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#ifndef WEBRTC_CODEC_ISAC
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kISACSWB = -1,
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#endif
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// 48 kHz not supported, always set to -1.
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kPCM16Bswb48kHz = -1,
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#ifndef WEBRTC_CODEC_ILBC
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kILBC = -1,
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#endif
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#ifndef WEBRTC_CODEC_G722
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kG722 = -1, // Mono
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kG722_2ch = -1, // Stereo
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#endif
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#ifndef WEBRTC_CODEC_OPUS
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kOpus = -1, // Mono and stereo
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#endif
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#ifndef WEBRTC_CODEC_RED
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kRED = -1,
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#endif
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#ifndef ENABLE_48000_HZ
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kCNFB = -1,
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#endif
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kNone = -1
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};
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static inline size_t NumberOfCodecs() {
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return static_cast<size_t>(CodecId::kNumCodecs);
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}
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static inline rtc::Optional<int> CodecIndexFromId(CodecId codec_id) {
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const int i = static_cast<int>(codec_id);
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return i >= 0 && i < static_cast<int>(NumberOfCodecs())
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? rtc::Optional<int>(i)
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: rtc::Optional<int>();
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}
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static inline rtc::Optional<CodecId> CodecIdFromIndex(int codec_index) {
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return static_cast<size_t>(codec_index) < NumberOfCodecs()
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? rtc::Optional<RentACodec::CodecId>(
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static_cast<RentACodec::CodecId>(codec_index))
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: rtc::Optional<RentACodec::CodecId>();
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}
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static rtc::Optional<CodecId> CodecIdByParams(const char* payload_name,
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int sampling_freq_hz,
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size_t channels);
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static rtc::Optional<CodecInst> CodecInstById(CodecId codec_id);
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static rtc::Optional<CodecId> CodecIdByInst(const CodecInst& codec_inst);
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static rtc::Optional<CodecInst> CodecInstByParams(const char* payload_name,
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int sampling_freq_hz,
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size_t channels);
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static bool IsCodecValid(const CodecInst& codec_inst);
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static inline bool IsPayloadTypeValid(int payload_type) {
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return payload_type >= 0 && payload_type <= 127;
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}
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static rtc::ArrayView<const CodecInst> Database();
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static rtc::Optional<bool> IsSupportedNumChannels(CodecId codec_id,
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size_t num_channels);
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static rtc::Optional<NetEqDecoder> NetEqDecoderFromCodecId(
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CodecId codec_id,
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size_t num_channels);
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// Parse codec_inst and extract payload types. If the given CodecInst was for
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// the wrong sort of codec, return kSkip; otherwise, if the rate was illegal,
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// return kBadFreq; otherwise, update the given RTP timestamp rate (Hz) ->
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// payload type map and return kOk.
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enum class RegistrationResult { kOk, kSkip, kBadFreq };
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static RegistrationResult RegisterCngPayloadType(std::map<int, int>* pt_map,
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const CodecInst& codec_inst);
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static RegistrationResult RegisterRedPayloadType(std::map<int, int>* pt_map,
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const CodecInst& codec_inst);
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RentACodec();
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~RentACodec();
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// Creates and returns an audio encoder built to the given specification.
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// Returns null in case of error.
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std::unique_ptr<AudioEncoder> RentEncoder(const CodecInst& codec_inst);
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struct StackParameters {
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StackParameters();
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~StackParameters();
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std::unique_ptr<AudioEncoder> speech_encoder;
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bool use_codec_fec = false;
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bool use_red = false;
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bool use_cng = false;
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ACMVADMode vad_mode = VADNormal;
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// Maps from RTP timestamp rate (in Hz) to payload type.
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std::map<int, int> cng_payload_types;
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std::map<int, int> red_payload_types;
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};
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// Creates and returns an audio encoder stack constructed to the given
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// specification. If the specification isn't compatible with the encoder, it
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// will be changed to match (things will be switched off). The speech encoder
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// will be stolen. If the specification isn't complete, returns nullptr.
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std::unique_ptr<AudioEncoder> RentEncoderStack(StackParameters* param);
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// Creates and returns an iSAC decoder.
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std::unique_ptr<AudioDecoder> RentIsacDecoder(int sample_rate_hz);
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private:
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std::unique_ptr<AudioEncoder> speech_encoder_;
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std::unique_ptr<AudioEncoder> cng_encoder_;
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std::unique_ptr<AudioEncoder> red_encoder_;
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rtc::scoped_refptr<LockedIsacBandwidthInfo> isac_bandwidth_info_;
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RTC_DISALLOW_COPY_AND_ASSIGN(RentACodec);
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};
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} // namespace acm2
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_CODING_ACM2_RENT_A_CODEC_H_
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