/* AudioUsbALSA.h

Copyright (c) 2012, The Linux Foundation. All rights reserved.

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      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.
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      contributors may be used to endorse or promote products derived
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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#ifndef ANDROID_AUDIO_USB_ALSA_H
#define ANDROID_AUDIO_USB_ALSA_H

#include <utils/List.h>
#include <hardware_legacy/AudioHardwareBase.h>

#include <hardware_legacy/AudioHardwareInterface.h>
#include <hardware_legacy/AudioSystemLegacy.h>
#include <system/audio.h>
#include <hardware/audio.h>
#include <utils/threads.h>

#define DEFAULT_BUFFER_SIZE   2048
#define POLL_TIMEOUT   3000
#define DEFAULT_CHANNEL_MODE  2
#define CHANNEL_MODE_ONE  1
#define PROXY_DEFAULT_SAMPLING_RATE 48000
#define SIGNAL_EVENT_TIMEOUT 1
#define SIGNAL_EVENT_KILLTHREAD 2

#define BUFFSIZE 1000000

#define PATH "/proc/asound/card1/stream0"

extern "C" {
   #include <sound/asound.h>
   #include "alsa_audio.h"
   #include "msm8960_use_cases.h"
}

#include <hardware/hardware.h>

namespace android_audio_legacy
{
using android::List;
using android::Mutex;
class AudioUsbALSA;

class AudioUsbALSA
{
private:
    int mproxypfdPlayback;
    int musbpfdPlayback;
    int mnfdsPlayback;
    int mnfdsRecording;
    int mtimeOut;
    int mtimeOutRecording;
    struct pcm *mproxyRecordingHandle;
    struct pcm *musbRecordingHandle;
    struct pcm *mproxyPlaybackHandle;
    struct pcm *musbPlaybackHandle;
    u_int8_t *mdstUsb_addr;
    u_int8_t *msrcProxy_addr;
    bool mkillPlayBackThread;
    bool mkillRecordingThread;
    pthread_t mPlaybackUsb;
    pthread_t mRecordingUsb;
    snd_use_case_mgr_t *mUcMgr;

    //Helper functions
    struct pcm * configureDevice(unsigned flags, char* hw, int sampleRate, int channelCount, int periodSize, bool playback);
    status_t syncPtr(struct pcm *handle, bool *killThread);

    //playback
    void pollForProxyData();
    void pollForUsbData();

    //recording
    void pollForUsbDataForRecording();
    void pollForProxyDataForRecording();

    status_t startDevice(pcm *handle, bool *killThread);

    void PlaybackThreadEntry();
    static void *PlaybackThreadWrapper(void *me);

    void RecordingThreadEntry();
    static void *RecordingThreadWrapper(void *me);

    status_t setHardwareParams(pcm *local_handle, uint32_t sampleRate, uint32_t channels, int periodSize);

    status_t setSoftwareParams(pcm *pcm, bool playback);

    status_t closeDevice(pcm *handle);

    status_t getCap(char * type, int &channels, int &sampleRate);
    int         getnumOfRates(char *rateStr);
    int         mchannelsPlayback;
    int         msampleRatePlayback;
    int         mchannelsCapture;
    int         msampleRateCapture;

public:
    AudioUsbALSA();
    virtual            ~AudioUsbALSA();

    void exitPlaybackThread(uint64_t writeVal);
    void exitRecordingThread(uint64_t writeVal);
    void setkillUsbRecordingThread(bool val);
    bool getkillUsbPlaybackThread() {
        return mkillPlayBackThread;
    }
    bool getkillUsbRecordingThread() {
        return mkillRecordingThread;
    }
    //Playback
    void startPlayback();

    //Capture
    void startRecording();
};

};        // namespace android_audio_legacy
#endif    // ANDROID_AUDIO_USB_ALSA_H