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Diffstat (limited to 'packages/TtsService/src/android/tts/SynthProxy.java')
| -rwxr-xr-x | packages/TtsService/src/android/tts/SynthProxy.java | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/packages/TtsService/src/android/tts/SynthProxy.java b/packages/TtsService/src/android/tts/SynthProxy.java deleted file mode 100755 index f5f5fcf..0000000 --- a/packages/TtsService/src/android/tts/SynthProxy.java +++ /dev/null @@ -1,238 +0,0 @@ -/* - * Copyright (C) 2009 Google Inc. - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may not - * use this file except in compliance with the License. You may obtain a copy of - * the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the - * License for the specific language governing permissions and limitations under - * the License. - */ -package android.tts; - -import android.media.AudioManager; -import android.media.AudioSystem; -import android.util.Log; -import java.lang.ref.WeakReference; - -/** - * @hide - * - * The SpeechSynthesis class provides a high-level api to create and play - * synthesized speech. This class is used internally to talk to a native - * TTS library that implements the interface defined in - * frameworks/base/include/tts/TtsEngine.h - * - */ -@SuppressWarnings("unused") -public class SynthProxy { - - // Default parameters of a filter to be applied when using the Pico engine. - // Such a huge filter gain is justified by how much energy in the low frequencies is "wasted" at - // the output of the synthesis. The low shelving filter removes it, leaving room for - // amplification. - private final static float PICO_FILTER_GAIN = 5.0f; // linear gain - private final static float PICO_FILTER_LOWSHELF_ATTENUATION = -18.0f; // in dB - private final static float PICO_FILTER_TRANSITION_FREQ = 1100.0f; // in Hz - private final static float PICO_FILTER_SHELF_SLOPE = 1.0f; // Q - - // - // External API - // - - /** - * Constructor; pass the location of the native TTS .so to use. - */ - public SynthProxy(String nativeSoLib, String engineConfig) { - boolean applyFilter = nativeSoLib.toLowerCase().contains("pico"); - Log.v(TtsService.SERVICE_TAG, "About to load "+ nativeSoLib + ", applyFilter="+applyFilter); - native_setup(new WeakReference<SynthProxy>(this), nativeSoLib, engineConfig); - native_setLowShelf(applyFilter, PICO_FILTER_GAIN, PICO_FILTER_LOWSHELF_ATTENUATION, - PICO_FILTER_TRANSITION_FREQ, PICO_FILTER_SHELF_SLOPE); - } - - /** - * Stops and clears the AudioTrack. - */ - public int stop() { - return native_stop(mJniData); - } - - /** - * Synchronous stop of the synthesizer. This method returns when the synth - * has completed the stop procedure and doesn't use any of the resources it - * was using while synthesizing. - * - * @return {@link android.speech.tts.TextToSpeech.SUCCESS} or - * {@link android.speech.tts.TextToSpeech.ERROR} - */ - public int stopSync() { - return native_stopSync(mJniData); - } - - /** - * Synthesize speech and speak it directly using AudioTrack. - */ - public int speak(String text, int streamType, float volume, float pan) { - Log.i(TAG, "speak() on stream "+ streamType); - if ((streamType > -1) && (streamType < AudioSystem.getNumStreamTypes())) { - return native_speak(mJniData, text, streamType, volume, pan); - } else { - Log.e("SynthProxy", "Trying to speak with invalid stream type " + streamType); - return native_speak(mJniData, text, AudioManager.STREAM_MUSIC, volume, pan); - } - } - - /** - * Synthesize speech to a file. The current implementation writes a valid - * WAV file to the given path, assuming it is writable. Something like - * "/sdcard/???.wav" is recommended. - */ - public int synthesizeToFile(String text, String filename) { - Log.i(TAG, "synthesizeToFile() to file "+ filename); - return native_synthesizeToFile(mJniData, text, filename); - } - - /** - * Queries for language support. - * Return codes are defined in android.speech.tts.TextToSpeech - */ - public int isLanguageAvailable(String language, String country, String variant) { - return native_isLanguageAvailable(mJniData, language, country, variant); - } - - /** - * Updates the engine configuration. - */ - public int setConfig(String engineConfig) { - return native_setConfig(mJniData, engineConfig); - } - - /** - * Sets the language. - */ - public int setLanguage(String language, String country, String variant) { - return native_setLanguage(mJniData, language, country, variant); - } - - /** - * Loads the language: it's not set, but prepared for use later. - */ - public int loadLanguage(String language, String country, String variant) { - return native_loadLanguage(mJniData, language, country, variant); - } - - /** - * Sets the speech rate. - */ - public final int setSpeechRate(int speechRate) { - return native_setSpeechRate(mJniData, speechRate); - } - - /** - * Sets the pitch of the synthesized voice. - */ - public final int setPitch(int pitch) { - return native_setPitch(mJniData, pitch); - } - - /** - * Returns the currently set language, country and variant information. - */ - public String[] getLanguage() { - return native_getLanguage(mJniData); - } - - /** - * Gets the currently set rate. - */ - public int getRate() { - return native_getRate(mJniData); - } - - /** - * Shuts down the native synthesizer. - */ - public void shutdown() { - native_shutdown(mJniData); - } - - // - // Internal - // - - protected void finalize() { - native_finalize(mJniData); - mJniData = 0; - } - - static { - System.loadLibrary("ttssynthproxy"); - } - - private final static String TAG = "SynthProxy"; - - /** - * Accessed by native methods - */ - private int mJniData = 0; - - private native final int native_setup(Object weak_this, String nativeSoLib, - String engineConfig); - - private native final int native_setLowShelf(boolean applyFilter, float filterGain, - float attenuationInDb, float freqInHz, float slope); - - private native final void native_finalize(int jniData); - - private native final int native_stop(int jniData); - - private native final int native_stopSync(int jniData); - - private native final int native_speak(int jniData, String text, int streamType, float volume, - float pan); - - private native final int native_synthesizeToFile(int jniData, String text, String filename); - - private native final int native_isLanguageAvailable(int jniData, String language, - String country, String variant); - - private native final int native_setLanguage(int jniData, String language, String country, - String variant); - - private native final int native_loadLanguage(int jniData, String language, String country, - String variant); - - private native final int native_setConfig(int jniData, String engineConfig); - - private native final int native_setSpeechRate(int jniData, int speechRate); - - private native final int native_setPitch(int jniData, int speechRate); - - private native final String[] native_getLanguage(int jniData); - - private native final int native_getRate(int jniData); - - private native final void native_shutdown(int jniData); - - - /** - * Callback from the C layer - */ - @SuppressWarnings("unused") - private static void postNativeSpeechSynthesizedInJava(Object tts_ref, - int bufferPointer, int bufferSize) { - - Log.i("TTS plugin debug", "bufferPointer: " + bufferPointer - + " bufferSize: " + bufferSize); - - SynthProxy nativeTTS = (SynthProxy)((WeakReference)tts_ref).get(); - // TODO notify TTS service of synthesis/playback completion, - // method definition to be changed. - } -} |