From 99c2e698d2a3c56649e42d8d2133706cd8c9501e Mon Sep 17 00:00:00 2001 From: Moonchild Date: Wed, 20 May 2020 10:19:04 +0000 Subject: Issue #1538 - remove speech recognition engine This removes speech recognition, pocketsphinx, training models and the speech automated test interface. This also re-establishes proper use of MOZ_WEBSPEECH to work for the speech API (synthesis part only) that was a broken mess before, with some synth parts being always built, some parts being built only with it enabled and recognition parts being dependent on it. I'm pretty sure it'd be totally busted if you'd ever have tried building without MOZ_WEBPEECH before. Tested that synthesis still works as-intended. This resolves #1538 --- dom/media/webspeech/recognition/endpointer.h | 180 --------------------------- 1 file changed, 180 deletions(-) delete mode 100644 dom/media/webspeech/recognition/endpointer.h (limited to 'dom/media/webspeech/recognition/endpointer.h') diff --git a/dom/media/webspeech/recognition/endpointer.h b/dom/media/webspeech/recognition/endpointer.h deleted file mode 100644 index 7879d6b9f..000000000 --- a/dom/media/webspeech/recognition/endpointer.h +++ /dev/null @@ -1,180 +0,0 @@ -// Copyright (c) 2013 The Chromium Authors. All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef CONTENT_BROWSER_SPEECH_ENDPOINTER_ENDPOINTER_H_ -#define CONTENT_BROWSER_SPEECH_ENDPOINTER_ENDPOINTER_H_ - -#include "energy_endpointer.h" - -namespace mozilla { - -struct AudioChunk; - -// A simple interface to the underlying energy-endpointer implementation, this -// class lets callers provide audio as being recorded and let them poll to find -// when the user has stopped speaking. -// -// There are two events that may trigger the end of speech: -// -// speechInputPossiblyComplete event: -// -// Signals that silence/noise has been detected for a *short* amount of -// time after some speech has been detected. It can be used for low latency -// UI feedback. To disable it, set it to a large amount. -// -// speechInputComplete event: -// -// This event is intended to signal end of input and to stop recording. -// The amount of time to wait after speech is set by -// speech_input_complete_silence_length_ and optionally two other -// parameters (see below). -// This time can be held constant, or can change as more speech is detected. -// In the latter case, the time changes after a set amount of time from the -// *beginning* of speech. This is motivated by the expectation that there -// will be two distinct types of inputs: short search queries and longer -// dictation style input. -// -// Three parameters are used to define the piecewise constant timeout function. -// The timeout length is speech_input_complete_silence_length until -// long_speech_length, when it changes to -// long_speech_input_complete_silence_length. -class Endpointer { - public: - explicit Endpointer(int sample_rate); - - // Start the endpointer. This should be called at the beginning of a session. - void StartSession(); - - // Stop the endpointer. - void EndSession(); - - // Start environment estimation. Audio will be used for environment estimation - // i.e. noise level estimation. - void SetEnvironmentEstimationMode(); - - // Start user input. This should be called when the user indicates start of - // input, e.g. by pressing a button. - void SetUserInputMode(); - - // Process a segment of audio, which may be more than one frame. - // The status of the last frame will be returned. - EpStatus ProcessAudio(const AudioChunk& raw_audio, float* rms_out); - - // Get the status of the endpointer. - EpStatus Status(int64_t *time_us); - - // Get the expected frame size for audio chunks. Audio chunks are expected - // to contain a number of samples that is a multiple of this number, and extra - // samples will be dropped. - int32_t FrameSize() const { - return frame_size_; - } - - // Returns true if the endpointer detected reasonable audio levels above - // background noise which could be user speech, false if not. - bool DidStartReceivingSpeech() const { - return speech_previously_detected_; - } - - bool IsEstimatingEnvironment() const { - return energy_endpointer_.estimating_environment(); - } - - void set_speech_input_complete_silence_length(int64_t time_us) { - speech_input_complete_silence_length_us_ = time_us; - } - - void set_long_speech_input_complete_silence_length(int64_t time_us) { - long_speech_input_complete_silence_length_us_ = time_us; - } - - void set_speech_input_possibly_complete_silence_length(int64_t time_us) { - speech_input_possibly_complete_silence_length_us_ = time_us; - } - - void set_long_speech_length(int64_t time_us) { - long_speech_length_us_ = time_us; - } - - bool speech_input_complete() const { - return speech_input_complete_; - } - - // RMS background noise level in dB. - float NoiseLevelDb() const { return energy_endpointer_.GetNoiseLevelDb(); } - - private: - // Reset internal states. Helper method common to initial input utterance - // and following input utternaces. - void Reset(); - - // Minimum allowable length of speech input. - int64_t speech_input_minimum_length_us_; - - // The speechInputPossiblyComplete event signals that silence/noise has been - // detected for a *short* amount of time after some speech has been detected. - // This proporty specifies the time period. - int64_t speech_input_possibly_complete_silence_length_us_; - - // The speechInputComplete event signals that silence/noise has been - // detected for a *long* amount of time after some speech has been detected. - // This property specifies the time period. - int64_t speech_input_complete_silence_length_us_; - - // Same as above, this specifies the required silence period after speech - // detection. This period is used instead of - // speech_input_complete_silence_length_ when the utterance is longer than - // long_speech_length_. This parameter is optional. - int64_t long_speech_input_complete_silence_length_us_; - - // The period of time after which the endpointer should consider - // long_speech_input_complete_silence_length_ as a valid silence period - // instead of speech_input_complete_silence_length_. This parameter is - // optional. - int64_t long_speech_length_us_; - - // First speech onset time, used in determination of speech complete timeout. - int64_t speech_start_time_us_; - - // Most recent end time, used in determination of speech complete timeout. - int64_t speech_end_time_us_; - - int64_t audio_frame_time_us_; - EpStatus old_ep_status_; - bool waiting_for_speech_possibly_complete_timeout_; - bool waiting_for_speech_complete_timeout_; - bool speech_previously_detected_; - bool speech_input_complete_; - EnergyEndpointer energy_endpointer_; - int sample_rate_; - int32_t frame_size_; -}; - -} // namespace mozilla - -#endif // CONTENT_BROWSER_SPEECH_ENDPOINTER_ENDPOINTER_H_ -- cgit v1.2.3