1 /* AudioUsbALSA.h 2 3 Copyright (c) 2012, Code Aurora Forum. All rights reserved. 4 5 Redistribution and use in source and binary forms, with or without 6 modification, are permitted provided that the following conditions are 7 met: 8 * Redistributions of source code must retain the above copyright 9 notice, this list of conditions and the following disclaimer. 10 * Redistributions in binary form must reproduce the above 11 copyright notice, this list of conditions and the following 12 disclaimer in the documentation and/or other materials provided 13 with the distribution. 14 * Neither the name of Code Aurora Forum, Inc. nor the names of its 15 contributors may be used to endorse or promote products derived 16 from this software without specific prior written permission. 17 18 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 19 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 21 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 22 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 25 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 27 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 28 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.*/ 29 30 #ifndef ANDROID_AUDIO_USB_ALSA_H 31 #define ANDROID_AUDIO_USB_ALSA_H 32 33 #include <utils/List.h> 34 #include <hardware_legacy/AudioHardwareBase.h> 35 36 #include <hardware_legacy/AudioHardwareInterface.h> 37 #include <hardware_legacy/AudioSystemLegacy.h> 38 #include <system/audio.h> 39 #include <hardware/audio.h> 40 #include <utils/threads.h> 41 42 #define DEFAULT_BUFFER_SIZE 2048 43 #define POLL_TIMEOUT 3000 44 #define DEFAULT_CHANNEL_MODE 2 45 #define CHANNEL_MODE_ONE 1 46 #define PROXY_DEFAULT_SAMPLING_RATE 48000 47 #define SIGNAL_EVENT_TIMEOUT 1 48 #define SIGNAL_EVENT_KILLTHREAD 2 49 50 #define BUFFSIZE 1000000 51 52 #define PATH "/proc/asound/card1/stream0" 53 54 extern "C" { 55 #include <sound/asound.h> 56 #include "alsa_audio.h" 57 #include "msm8960_use_cases.h" 58 } 59 60 #include <hardware/hardware.h> 61 62 namespace android_audio_legacy 63 { 64 using android::List; 65 using android::Mutex; 66 class AudioUsbALSA; 67 68 class AudioUsbALSA 69 { 70 private: 71 int mproxypfdPlayback; 72 int musbpfdPlayback; 73 int mnfdsPlayback; 74 int mnfdsRecording; 75 int mtimeOut; 76 int mtimeOutRecording; 77 struct pcm *mproxyRecordingHandle; 78 struct pcm *musbRecordingHandle; 79 struct pcm *mproxyPlaybackHandle; 80 struct pcm *musbPlaybackHandle; 81 u_int8_t *mdstUsb_addr; 82 u_int8_t *msrcProxy_addr; 83 bool mkillPlayBackThread; 84 bool mkillRecordingThread; 85 pthread_t mPlaybackUsb; 86 pthread_t mRecordingUsb; 87 snd_use_case_mgr_t *mUcMgr; 88 89 //Helper functions 90 struct pcm * configureDevice(unsigned flags, char* hw, int sampleRate, int channelCount, int periodSize, bool playback); 91 status_t syncPtr(struct pcm *handle, bool *killThread); 92 93 //playback 94 void pollForProxyData(); 95 void pollForUsbData(); 96 97 //recording 98 void pollForUsbDataForRecording(); 99 void pollForProxyDataForRecording(); 100 101 status_t startDevice(pcm *handle, bool *killThread); 102 103 void PlaybackThreadEntry(); 104 static void *PlaybackThreadWrapper(void *me); 105 106 void RecordingThreadEntry(); 107 static void *RecordingThreadWrapper(void *me); 108 109 status_t setHardwareParams(pcm *local_handle, uint32_t sampleRate, uint32_t channels, int periodSize); 110 111 status_t setSoftwareParams(pcm *pcm, bool playback); 112 113 status_t closeDevice(pcm *handle); 114 115 status_t getCap(char * type, int &channels, int &sampleRate); 116 int getnumOfRates(char *rateStr); 117 int mchannelsPlayback; 118 int msampleRatePlayback; 119 int mchannelsCapture; 120 int msampleRateCapture; 121 122 public: 123 AudioUsbALSA(); 124 virtual ~AudioUsbALSA(); 125 126 void exitPlaybackThread(uint64_t writeVal); 127 void exitRecordingThread(uint64_t writeVal); 128 void setkillUsbRecordingThread(bool val); getkillUsbPlaybackThread()129 bool getkillUsbPlaybackThread() { 130 return mkillPlayBackThread; 131 } getkillUsbRecordingThread()132 bool getkillUsbRecordingThread() { 133 return mkillRecordingThread; 134 } 135 //Playback 136 void startPlayback(); 137 138 //Capture 139 void startRecording(); 140 }; 141 142 }; // namespace android_audio_legacy 143 #endif // ANDROID_AUDIO_USB_ALSA_H 144