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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
commit | 15f767b960b38059a74a42a33e16d8df2aec8bc1 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /include/media/ToneGenerator.h | |
parent | ad04d9201452001dbaac4349f084cc9316190b89 (diff) | |
download | frameworks_av-15f767b960b38059a74a42a33e16d8df2aec8bc1.zip frameworks_av-15f767b960b38059a74a42a33e16d8df2aec8bc1.tar.gz frameworks_av-15f767b960b38059a74a42a33e16d8df2aec8bc1.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'include/media/ToneGenerator.h')
-rw-r--r-- | include/media/ToneGenerator.h | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/include/media/ToneGenerator.h b/include/media/ToneGenerator.h deleted file mode 100644 index ec64e4d..0000000 --- a/include/media/ToneGenerator.h +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * 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. - */ - -#ifndef ANDROID_TONEGENERATOR_H_ -#define ANDROID_TONEGENERATOR_H_ - -#include <utils/RefBase.h> -#include <utils/Vector.h> -#include <utils/threads.h> -#include <media/AudioSystem.h> -#include <media/AudioTrack.h> - -namespace android { - -class ToneGenerator { -public: - - // List of all available tones - // This enum must be kept consistant with constants in ToneGenerator JAVA class - enum tone_type { - // DTMF tones ITU-T Recommendation Q.23 - TONE_DTMF_0 = 0, // 0 key: 1336Hz, 941Hz - TONE_DTMF_1, // 1 key: 1209Hz, 697Hz - TONE_DTMF_2, // 2 key: 1336Hz, 697Hz - TONE_DTMF_3, // 3 key: 1477Hz, 697Hz - TONE_DTMF_4, // 4 key: 1209Hz, 770Hz - TONE_DTMF_5, // 5 key: 1336Hz, 770Hz - TONE_DTMF_6, // 6 key: 1477Hz, 770Hz - TONE_DTMF_7, // 7 key: 1209Hz, 852Hz - TONE_DTMF_8, // 8 key: 1336Hz, 852Hz - TONE_DTMF_9, // 9 key: 1477Hz, 852Hz - TONE_DTMF_S, // * key: 1209Hz, 941Hz - TONE_DTMF_P, // # key: 1477Hz, 941Hz - TONE_DTMF_A, // A key: 1633Hz, 697Hz - TONE_DTMF_B, // B key: 1633Hz, 770Hz - TONE_DTMF_C, // C key: 1633Hz, 852Hz - TONE_DTMF_D, // D key: 1633Hz, 941Hz - // Call supervisory tones: 3GPP TS 22.001 (CEPT) - TONE_SUP_DIAL, // Dial tone: 425Hz, continuous - TONE_SUP_BUSY, // Busy tone: 425Hz, 500ms ON, 500ms OFF... - TONE_SUP_CONGESTION, // Congestion tone: 425Hz, 200ms ON, 200ms OFF... - TONE_SUP_RADIO_ACK, // Radio path acknowlegment: 425Hz, 200ms ON - TONE_SUP_RADIO_NOTAVAIL, // Radio path not available: 425Hz, 200ms ON, 200 OFF 3 bursts - TONE_SUP_ERROR, // Error/Special info: 950Hz+1400Hz+1800Hz, 330ms ON, 1s OFF... - TONE_SUP_CALL_WAITING, // Call Waiting: 425Hz, 200ms ON, 600ms OFF, 200ms ON, 3s OFF... - TONE_SUP_RINGTONE, // Ring Tone: 425Hz, 1s ON, 4s OFF... - // Proprietary tones: 3GPP TS 31.111 - TONE_PROP_BEEP, // General beep: 400Hz+1200Hz, 35ms ON - TONE_PROP_ACK, // Positive Acknowlgement: 1200Hz, 100ms ON, 100ms OFF 2 bursts - TONE_PROP_NACK, // Negative Acknowlgement: 300Hz+400Hz+500Hz, 400ms ON - TONE_PROP_PROMPT, // Prompt tone: 400Hz+1200Hz, 200ms ON - TONE_PROP_BEEP2, // General double beep: 400Hz+1200Hz, 35ms ON, 200ms OFF, 35ms on - NUM_TONES - }; - - ToneGenerator(int streamType, float volume); - ~ToneGenerator(); - - bool startTone(int toneType); - void stopTone(); - - bool isInited() { return (mState == TONE_IDLE)?false:true;} - -private: - - enum tone_state { - TONE_IDLE, // ToneGenerator is being initialized or initialization failed - TONE_INIT, // ToneGenerator has been successfully initialized and is not playing - TONE_STARTING, // ToneGenerator is starting playing - TONE_PLAYING, // ToneGenerator is playing - TONE_STOPPING, // ToneGenerator is stoping - TONE_RESTARTING // - }; - - static const unsigned int TONEGEN_MAX_WAVES = 3; - static const unsigned int TONEGEN_MAX_SEGMENTS = 4; // Maximun number of elenemts in - static const unsigned int TONEGEN_INF = 0xFFFFFFFF; // Represents infinite time duration - static const float TONEGEN_GAIN = 0.9; // Default gain passed to WaveGenerator(). - - // ToneDescriptor class contains all parameters needed to generate a tone: - // - The array waveFreq[] contains the frequencies of all individual waves making the multi-tone. - // The number of sine waves varies from 1 to TONEGEN_MAX_WAVES. - // The first null value indicates that no more waves are needed. - // - The array segments[] is used to generate the tone pulses. A segment is a period of time - // during which the tone is ON or OFF. Segments with even index (starting from 0) - // correspond to tone ON state and segments with odd index to OFF state. - // The data stored in segments[] is the duration of the corresponding period in ms. - // The first segment encountered with a 0 duration indicates that no more segment follows. - // - repeatCnt indicates the number of times the sequence described by segments[] array must be repeated. - // When the tone generator encounters the first 0 duration segment, it will compare repeatCnt to mCurCount. - // If mCurCount > repeatCnt, the tone is stopped automatically. - - class ToneDescriptor { - public: - unsigned short waveFreq[TONEGEN_MAX_WAVES+1]; - unsigned long segments[TONEGEN_MAX_SEGMENTS+1]; - unsigned long repeatCnt; - }; - - static const ToneDescriptor toneDescriptors[NUM_TONES]; - - unsigned int mTotalSmp; // Total number of audio samples played (gives current time) - unsigned int mNextSegSmp; // Position of next segment transition expressed in samples - // NOTE: because mTotalSmp, mNextSegSmp are stored on 32 bit, current design will operate properly - // only if tone duration is less than about 27 Hours(@44100Hz sampling rate). If this time is exceeded, - // no crash will occur but tone sequence will show a glitch. - - unsigned short mCurSegment; // Current segment index in ToneDescriptor segments[] - unsigned short mCurCount; // Current sequence repeat count - volatile unsigned short mState; // ToneGenerator state (tone_state) - const ToneDescriptor *mpToneDesc; // pointer to active tone descriptor - const ToneDescriptor *mpNewToneDesc; // pointer to next active tone descriptor - - int mSamplingRate; // AudioFlinger Sampling rate - AudioTrack *mpAudioTrack; // Pointer to audio track used for playback - Mutex mLock; // Mutex to control concurent access to ToneGenerator object from audio callback and application API - Mutex mCbkCondLock; // Mutex associated to mWaitCbkCond - Condition mWaitCbkCond; // condition enabling interface to wait for audio callback completion after a change is requested - float mVolume; // Volume applied to audio track - int mStreamType; // Audio stream used for output - unsigned int mProcessSize; // Size of audio blocks generated at a time by audioCallback() (in PCM frames). - - bool initAudioTrack(); - static void audioCallback(int event, void* user, void *info); - bool prepareWave(); - unsigned int numWaves(); - void clearWaveGens(); - - // WaveGenerator generates a single sine wave - class WaveGenerator { - public: - enum gen_command { - WAVEGEN_START, // Start/restart wave from phase 0 - WAVEGEN_CONT, // Continue wave from current phase - WAVEGEN_STOP // Stop wave on zero crossing - }; - - WaveGenerator(unsigned short samplingRate, unsigned short frequency, - float volume); - ~WaveGenerator(); - - void getSamples(short *outBuffer, unsigned int count, - unsigned int command); - - private: - static const short GEN_AMP = 32000; // amplitude of generator - static const short S_Q14 = 14; // shift for Q14 - static const short S_Q15 = 15; // shift for Q15 - - short mA1_Q14; // Q14 coefficient - // delay line of full amplitude generator - short mS1, mS2; // delay line S2 oldest - short mS2_0; // saved value for reinitialisation - short mAmplitude_Q15; // Q15 amplitude - }; - - Vector<WaveGenerator *> mWaveGens; // list of active wave generators. -}; - -} -; // namespace android - -#endif /*ANDROID_TONEGENERATOR_H_*/ |