1/* //device/servers/AudioFlinger/AudioHardwareStub.h
2**
3** Copyright 2007, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#ifndef ANDROID_AUDIO_HARDWARE_STUB_H
19#define ANDROID_AUDIO_HARDWARE_STUB_H
20
21#include <stdint.h>
22#include <sys/types.h>
23
24#include <hardware_legacy/AudioHardwareBase.h>
25
26namespace android_audio_legacy {
27
28// ----------------------------------------------------------------------------
29
30class AudioStreamOutStub : public AudioStreamOut {
31public:
32    virtual status_t    set(int *pFormat, uint32_t *pChannels, uint32_t *pRate);
33    virtual uint32_t    sampleRate() const { return 44100; }
34    virtual size_t      bufferSize() const { return 4096; }
35    virtual uint32_t    channels() const { return AudioSystem::CHANNEL_OUT_STEREO; }
36    virtual int         format() const { return AudioSystem::PCM_16_BIT; }
37    virtual uint32_t    latency() const { return 0; }
38    virtual status_t    setVolume(float left, float right) { return NO_ERROR; }
39    virtual ssize_t     write(const void* buffer, size_t bytes);
40    virtual status_t    standby();
41    virtual status_t    dump(int fd, const Vector<String16>& args);
42    virtual status_t    setParameters(const String8& keyValuePairs) { return NO_ERROR;}
43    virtual String8     getParameters(const String8& keys);
44    virtual status_t    getRenderPosition(uint32_t *dspFrames);
45};
46
47class AudioStreamInStub : public AudioStreamIn {
48public:
49    virtual status_t    set(int *pFormat, uint32_t *pChannels, uint32_t *pRate, AudioSystem::audio_in_acoustics acoustics);
50    virtual uint32_t    sampleRate() const { return 8000; }
51    virtual size_t      bufferSize() const { return 320; }
52    virtual uint32_t    channels() const { return AudioSystem::CHANNEL_IN_MONO; }
53    virtual int         format() const { return AudioSystem::PCM_16_BIT; }
54    virtual status_t    setGain(float gain) { return NO_ERROR; }
55    virtual ssize_t     read(void* buffer, ssize_t bytes);
56    virtual status_t    dump(int fd, const Vector<String16>& args);
57    virtual status_t    standby() { return NO_ERROR; }
58    virtual status_t    setParameters(const String8& keyValuePairs) { return NO_ERROR;}
59    virtual String8     getParameters(const String8& keys);
60    virtual unsigned int  getInputFramesLost() const { return 0; }
61    virtual status_t addAudioEffect(effect_handle_t effect) { return NO_ERROR; }
62    virtual status_t removeAudioEffect(effect_handle_t effect) { return NO_ERROR; }
63};
64
65class AudioHardwareStub : public  AudioHardwareBase
66{
67public:
68                        AudioHardwareStub();
69    virtual             ~AudioHardwareStub();
70    virtual status_t    initCheck();
71    virtual status_t    setVoiceVolume(float volume);
72    virtual status_t    setMasterVolume(float volume);
73
74    // mic mute
75    virtual status_t    setMicMute(bool state) { mMicMute = state;  return  NO_ERROR; }
76    virtual status_t    getMicMute(bool* state) { *state = mMicMute ; return NO_ERROR; }
77
78    // create I/O streams
79    virtual AudioStreamOut* openOutputStream(
80                                uint32_t devices,
81                                int *format=0,
82                                uint32_t *channels=0,
83                                uint32_t *sampleRate=0,
84                                status_t *status=0);
85    virtual    void        closeOutputStream(AudioStreamOut* out);
86
87    virtual AudioStreamIn* openInputStream(
88                                uint32_t devices,
89                                int *format,
90                                uint32_t *channels,
91                                uint32_t *sampleRate,
92                                status_t *status,
93                                AudioSystem::audio_in_acoustics acoustics);
94    virtual    void        closeInputStream(AudioStreamIn* in);
95
96protected:
97    virtual status_t    dump(int fd, const Vector<String16>& args);
98
99            bool        mMicMute;
100private:
101    status_t            dumpInternals(int fd, const Vector<String16>& args);
102};
103
104// ----------------------------------------------------------------------------
105
106}; // namespace android
107
108#endif // ANDROID_AUDIO_HARDWARE_STUB_H
109