mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-15 06:40:43 +01:00
6948d84f63
Update AudioEncoderFactoryTemplate implementation to expand unit tests to the new api. Bug: webrtc:343086059 Change-Id: Ib63640de38aa15cc36067d5a3d1de2bf42cec313 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/353981 Reviewed-by: Jakob Ivarsson <jakobi@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42500}
97 lines
3.8 KiB
C++
97 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2017 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.
|
|
*/
|
|
|
|
#ifndef API_AUDIO_CODECS_AUDIO_ENCODER_FACTORY_H_
|
|
#define API_AUDIO_CODECS_AUDIO_ENCODER_FACTORY_H_
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
#include "absl/types/optional.h"
|
|
#include "api/audio_codecs/audio_codec_pair_id.h"
|
|
#include "api/audio_codecs/audio_encoder.h"
|
|
#include "api/audio_codecs/audio_format.h"
|
|
#include "api/environment/environment.h"
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/ref_count.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// A factory that creates AudioEncoders.
|
|
class AudioEncoderFactory : public RefCountInterface {
|
|
public:
|
|
struct Options {
|
|
// TODO(ossu): Try to avoid audio encoders having to know their payload
|
|
// type.
|
|
int payload_type = -1;
|
|
absl::optional<AudioCodecPairId> codec_pair_id;
|
|
};
|
|
|
|
// Returns a prioritized list of audio codecs, to use for signaling etc.
|
|
virtual std::vector<AudioCodecSpec> GetSupportedEncoders() = 0;
|
|
|
|
// Returns information about how this format would be encoded, provided it's
|
|
// supported. More format and format variations may be supported than those
|
|
// returned by GetSupportedEncoders().
|
|
virtual absl::optional<AudioCodecInfo> QueryAudioEncoder(
|
|
const SdpAudioFormat& format) = 0;
|
|
|
|
// Creates an AudioEncoder for the specified format. The encoder will tags its
|
|
// payloads with the specified payload type. The `codec_pair_id` argument is
|
|
// used to link encoders and decoders that talk to the same remote entity: if
|
|
// a AudioEncoderFactory::MakeAudioEncoder() and a
|
|
// AudioDecoderFactory::MakeAudioDecoder() call receive non-null IDs that
|
|
// compare equal, the factory implementations may assume that the encoder and
|
|
// decoder form a pair. (The intended use case for this is to set up
|
|
// communication between the AudioEncoder and AudioDecoder instances, which is
|
|
// needed for some codecs with built-in bandwidth adaptation.)
|
|
//
|
|
// Returns null if the format isn't supported.
|
|
//
|
|
// Note: Implementations need to be robust against combinations other than
|
|
// one encoder, one decoder getting the same ID; such encoders must still
|
|
// work.
|
|
// TODO: bugs.webrtc.org/343086059 - make pure virtual when all
|
|
// implementations of the `AudioEncoderFactory` are updated.
|
|
virtual absl::Nullable<std::unique_ptr<AudioEncoder>>
|
|
Create(const Environment& env, const SdpAudioFormat& format, Options options);
|
|
|
|
// TODO: bugs.webrtc.org/343086059 - Update all callers to use `Create`
|
|
// instead, update implementations not to override it, then delete.
|
|
virtual std::unique_ptr<AudioEncoder> MakeAudioEncoder(
|
|
int payload_type,
|
|
const SdpAudioFormat& format,
|
|
absl::optional<AudioCodecPairId> codec_pair_id);
|
|
};
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Implementation details follow
|
|
//------------------------------------------------------------------------------
|
|
|
|
inline absl::Nullable<std::unique_ptr<AudioEncoder>>
|
|
AudioEncoderFactory::Create(const Environment& env,
|
|
const SdpAudioFormat& format,
|
|
Options options) {
|
|
return MakeAudioEncoder(options.payload_type, format, options.codec_pair_id);
|
|
}
|
|
|
|
inline absl::Nullable<std::unique_ptr<AudioEncoder>>
|
|
AudioEncoderFactory::MakeAudioEncoder(
|
|
int payload_type,
|
|
const SdpAudioFormat& format,
|
|
absl::optional<AudioCodecPairId> codec_pair_id) {
|
|
// Newer shouldn't call it.
|
|
// Older code should implement it.
|
|
RTC_CHECK_NOTREACHED();
|
|
}
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // API_AUDIO_CODECS_AUDIO_ENCODER_FACTORY_H_
|