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

1 files changed, 0 insertions, 193 deletions

diff --git a/dom/media/webspeech/recognition/endpointer.cc b/dom/media/webspeech/recognition/endpointer.cc
deleted file mode 100644
index 2347043d4..000000000
--- a/dom/media/webspeech/recognition/endpointer.cc
+++ /dev/null
@@ -1,193 +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.
-
-#include "endpointer.h"
-
-#include "AudioSegment.h"
-
-namespace {
-const int kFrameRate = 200;  // 1 frame = 5ms of audio.
-}
-
-namespace mozilla {
-
-Endpointer::Endpointer(int sample_rate)
-    : speech_input_possibly_complete_silence_length_us_(-1),
-      speech_input_complete_silence_length_us_(-1),
-      audio_frame_time_us_(0),
-      sample_rate_(sample_rate),
-      frame_size_(0) {
-  Reset();
-
-  frame_size_ = static_cast<int>(sample_rate / static_cast<float>(kFrameRate));
-
-  speech_input_minimum_length_us_ =
-      static_cast<int64_t>(1.7 * 1000000);
-  speech_input_complete_silence_length_us_ =
-      static_cast<int64_t>(0.5 * 1000000);
-  long_speech_input_complete_silence_length_us_ = -1;
-  long_speech_length_us_ = -1;
-  speech_input_possibly_complete_silence_length_us_ =
-      1 * 1000000;
-
-  // Set the default configuration for Push To Talk mode.
-  EnergyEndpointerParams ep_config;
-  ep_config.set_frame_period(1.0f / static_cast<float>(kFrameRate));
-  ep_config.set_frame_duration(1.0f / static_cast<float>(kFrameRate));
-  ep_config.set_endpoint_margin(0.2f);
-  ep_config.set_onset_window(0.15f);
-  ep_config.set_speech_on_window(0.4f);
-  ep_config.set_offset_window(0.15f);
-  ep_config.set_onset_detect_dur(0.09f);
-  ep_config.set_onset_confirm_dur(0.075f);
-  ep_config.set_on_maintain_dur(0.10f);
-  ep_config.set_offset_confirm_dur(0.12f);
-  ep_config.set_decision_threshold(1000.0f);
-  ep_config.set_min_decision_threshold(50.0f);
-  ep_config.set_fast_update_dur(0.2f);
-  ep_config.set_sample_rate(static_cast<float>(sample_rate));
-  ep_config.set_min_fundamental_frequency(57.143f);
-  ep_config.set_max_fundamental_frequency(400.0f);
-  ep_config.set_contamination_rejection_period(0.25f);
-  energy_endpointer_.Init(ep_config);
-}
-
-void Endpointer::Reset() {
-  old_ep_status_ = EP_PRE_SPEECH;
-  waiting_for_speech_possibly_complete_timeout_ = false;
-  waiting_for_speech_complete_timeout_ = false;
-  speech_previously_detected_ = false;
-  speech_input_complete_ = false;
-  audio_frame_time_us_ = 0; // Reset time for packets sent to endpointer.
-  speech_end_time_us_ = -1;
-  speech_start_time_us_ = -1;
-}
-
-void Endpointer::StartSession() {
-  Reset();
-  energy_endpointer_.StartSession();
-}
-
-void Endpointer::EndSession() {
-  energy_endpointer_.EndSession();
-}
-
-void Endpointer::SetEnvironmentEstimationMode() {
-  Reset();
-  energy_endpointer_.SetEnvironmentEstimationMode();
-}
-
-void Endpointer::SetUserInputMode() {
-  energy_endpointer_.SetUserInputMode();
-}
-
-EpStatus Endpointer::Status(int64_t *time) {
-  return energy_endpointer_.Status(time);
-}
-
-EpStatus Endpointer::ProcessAudio(const AudioChunk& raw_audio, float* rms_out) {
-  MOZ_ASSERT(raw_audio.mBufferFormat == AUDIO_FORMAT_S16, "Audio is not in 16 bit format");
-  const int16_t* audio_data = static_cast<const int16_t*>(raw_audio.mChannelData[0]);
-  const int num_samples = raw_audio.mDuration;
-  EpStatus ep_status = EP_PRE_SPEECH;
-
-  // Process the input data in blocks of frame_size_, dropping any incomplete
-  // frames at the end (which is ok since typically the caller will be recording
-  // audio in multiples of our frame size).
-  int sample_index = 0;
-  while (sample_index + frame_size_ <= num_samples) {
-    // Have the endpointer process the frame.
-    energy_endpointer_.ProcessAudioFrame(audio_frame_time_us_,
-                                         audio_data + sample_index,
-                                         frame_size_,
-                                         rms_out);
-    sample_index += frame_size_;
-    audio_frame_time_us_ += (frame_size_ * 1000000) /
-                         sample_rate_;
-
-    // Get the status of the endpointer.
-    int64_t ep_time;
-    ep_status = energy_endpointer_.Status(&ep_time);
-    if (old_ep_status_ != ep_status)
-        fprintf(stderr, "Status changed old= %d, new= %d\n", old_ep_status_, ep_status);
-
-    // Handle state changes.
-    if ((EP_SPEECH_PRESENT == ep_status) &&
-        (EP_POSSIBLE_ONSET == old_ep_status_)) {
-      speech_end_time_us_ = -1;
-      waiting_for_speech_possibly_complete_timeout_ = false;
-      waiting_for_speech_complete_timeout_ = false;
-      // Trigger SpeechInputDidStart event on first detection.
-      if (false == speech_previously_detected_) {
-        speech_previously_detected_ = true;
-        speech_start_time_us_ = ep_time;
-      }
-    }
-    if ((EP_PRE_SPEECH == ep_status) &&
-        (EP_POSSIBLE_OFFSET == old_ep_status_)) {
-      speech_end_time_us_ = ep_time;
-      waiting_for_speech_possibly_complete_timeout_ = true;
-      waiting_for_speech_complete_timeout_ = true;
-    }
-    if (ep_time > speech_input_minimum_length_us_) {
-      // Speech possibly complete timeout.
-      if ((waiting_for_speech_possibly_complete_timeout_) &&
-          (ep_time - speech_end_time_us_ >
-              speech_input_possibly_complete_silence_length_us_)) {
-        waiting_for_speech_possibly_complete_timeout_ = false;
-      }
-      if (waiting_for_speech_complete_timeout_) {
-        // The length of the silence timeout period can be held constant, or it
-        // can be changed after a fixed amount of time from the beginning of
-        // speech.
-        bool has_stepped_silence =
-            (long_speech_length_us_ > 0) &&
-            (long_speech_input_complete_silence_length_us_ > 0);
-        int64_t requested_silence_length;
-        if (has_stepped_silence &&
-            (ep_time - speech_start_time_us_) > long_speech_length_us_) {
-          requested_silence_length =
-              long_speech_input_complete_silence_length_us_;
-        } else {
-          requested_silence_length =
-              speech_input_complete_silence_length_us_;
-        }
-
-        // Speech complete timeout.
-        if ((ep_time - speech_end_time_us_) > requested_silence_length) {
-          waiting_for_speech_complete_timeout_ = false;
-          speech_input_complete_ = true;
-        }
-      }
-    }
-    old_ep_status_ = ep_status;
-  }
-  return ep_status;
-}
-
-}  // namespace mozilla