1/* AudioUsbALSA.h
2
3Copyright (c) 2012, Code Aurora Forum. All rights reserved.
4
5Redistribution and use in source and binary forms, with or without
6modification, are permitted provided that the following conditions are
7met:
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
18THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
19WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
21ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
22BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
28IF 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
54extern "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
62namespace android_audio_legacy
63{
64using android::List;
65using android::Mutex;
66class AudioUsbALSA;
67
68class AudioUsbALSA
69{
70private:
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
122public:
123    AudioUsbALSA();
124    virtual            ~AudioUsbALSA();
125
126    void exitPlaybackThread(uint64_t writeVal);
127    void exitRecordingThread(uint64_t writeVal);
128    void setkillUsbRecordingThread(bool val);
129    bool getkillUsbPlaybackThread() {
130        return mkillPlayBackThread;
131    }
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