1 /* 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_ 12 #define MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_ 13 14 #include <stddef.h> 15 16 #include <memory> 17 #include <vector> 18 19 #include "api/audio/echo_canceller3_config.h" 20 #include "api/audio/echo_control.h" 21 #include "modules/audio_processing/aec3/echo_remover.h" 22 #include "modules/audio_processing/aec3/render_delay_buffer.h" 23 #include "modules/audio_processing/aec3/render_delay_controller.h" 24 25 namespace webrtc { 26 27 // Class for performing echo cancellation on 64 sample blocks of audio data. 28 class BlockProcessor { 29 public: 30 static BlockProcessor* Create(const EchoCanceller3Config& config, 31 int sample_rate_hz, 32 size_t num_render_channels, 33 size_t num_capture_channels); 34 // Only used for testing purposes. 35 static BlockProcessor* Create( 36 const EchoCanceller3Config& config, 37 int sample_rate_hz, 38 size_t num_render_channels, 39 size_t num_capture_channels, 40 std::unique_ptr<RenderDelayBuffer> render_buffer); 41 static BlockProcessor* Create( 42 const EchoCanceller3Config& config, 43 int sample_rate_hz, 44 size_t num_render_channels, 45 size_t num_capture_channels, 46 std::unique_ptr<RenderDelayBuffer> render_buffer, 47 std::unique_ptr<RenderDelayController> delay_controller, 48 std::unique_ptr<EchoRemover> echo_remover); 49 50 virtual ~BlockProcessor() = default; 51 52 // Get current metrics. 53 virtual void GetMetrics(EchoControl::Metrics* metrics) const = 0; 54 55 // Provides an optional external estimate of the audio buffer delay. 56 virtual void SetAudioBufferDelay(int delay_ms) = 0; 57 58 // Processes a block of capture data. 59 virtual void ProcessCapture( 60 bool echo_path_gain_change, 61 bool capture_signal_saturation, 62 std::vector<std::vector<std::vector<float>>>* linear_output, 63 std::vector<std::vector<std::vector<float>>>* capture_block) = 0; 64 65 // Buffers a block of render data supplied by a FrameBlocker object. 66 virtual void BufferRender( 67 const std::vector<std::vector<std::vector<float>>>& render_block) = 0; 68 69 // Reports whether echo leakage has been detected in the echo canceller 70 // output. 71 virtual void UpdateEchoLeakageStatus(bool leakage_detected) = 0; 72 }; 73 74 } // namespace webrtc 75 76 #endif // MODULES_AUDIO_PROCESSING_AEC3_BLOCK_PROCESSOR_H_ 77