1/* //device/servers/AudioFlinger/AudioHardwareStub.cpp
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#include <stdint.h>
19#include <sys/types.h>
20
21#include <stdlib.h>
22#include <unistd.h>
23#include <utils/String8.h>
24
25#include "AudioHardwareStub.h"
26#include <media/AudioRecord.h>
27
28namespace android {
29
30// ----------------------------------------------------------------------------
31
32AudioHardwareStub::AudioHardwareStub() : mMicMute(false)
33{
34}
35
36AudioHardwareStub::~AudioHardwareStub()
37{
38}
39
40status_t AudioHardwareStub::initCheck()
41{
42    return NO_ERROR;
43}
44
45AudioStreamOut* AudioHardwareStub::openOutputStream(
46        uint32_t devices, int *format, uint32_t *channels, uint32_t *sampleRate, status_t *status)
47{
48    AudioStreamOutStub* out = new AudioStreamOutStub();
49    status_t lStatus = out->set(format, channels, sampleRate);
50    if (status) {
51        *status = lStatus;
52    }
53    if (lStatus == NO_ERROR)
54        return out;
55    delete out;
56    return 0;
57}
58
59void AudioHardwareStub::closeOutputStream(AudioStreamOut* out)
60{
61    delete out;
62}
63
64AudioStreamIn* AudioHardwareStub::openInputStream(
65        uint32_t devices, int *format, uint32_t *channels, uint32_t *sampleRate,
66        status_t *status, AudioSystem::audio_in_acoustics acoustics)
67{
68    // check for valid input source
69    if (!AudioSystem::isInputDevice((AudioSystem::audio_devices)devices)) {
70        return 0;
71    }
72
73    AudioStreamInStub* in = new AudioStreamInStub();
74    status_t lStatus = in->set(format, channels, sampleRate, acoustics);
75    if (status) {
76        *status = lStatus;
77    }
78    if (lStatus == NO_ERROR)
79        return in;
80    delete in;
81    return 0;
82}
83
84void AudioHardwareStub::closeInputStream(AudioStreamIn* in)
85{
86    delete in;
87}
88
89status_t AudioHardwareStub::setVoiceVolume(float volume)
90{
91    return NO_ERROR;
92}
93
94status_t AudioHardwareStub::setMasterVolume(float volume)
95{
96    return NO_ERROR;
97}
98
99status_t AudioHardwareStub::dumpInternals(int fd, const Vector<String16>& args)
100{
101    const size_t SIZE = 256;
102    char buffer[SIZE];
103    String8 result;
104    result.append("AudioHardwareStub::dumpInternals\n");
105    snprintf(buffer, SIZE, "\tmMicMute: %s\n", mMicMute? "true": "false");
106    result.append(buffer);
107    ::write(fd, result.string(), result.size());
108    return NO_ERROR;
109}
110
111status_t AudioHardwareStub::dump(int fd, const Vector<String16>& args)
112{
113    dumpInternals(fd, args);
114    return NO_ERROR;
115}
116
117// ----------------------------------------------------------------------------
118
119status_t AudioStreamOutStub::set(int *pFormat, uint32_t *pChannels, uint32_t *pRate)
120{
121    if (pFormat) *pFormat = format();
122    if (pChannels) *pChannels = channels();
123    if (pRate) *pRate = sampleRate();
124
125    return NO_ERROR;
126}
127
128ssize_t AudioStreamOutStub::write(const void* buffer, size_t bytes)
129{
130    // fake timing for audio output
131    usleep(bytes * 1000000 / sizeof(int16_t) / AudioSystem::popCount(channels()) / sampleRate());
132    return bytes;
133}
134
135status_t AudioStreamOutStub::standby()
136{
137    return NO_ERROR;
138}
139
140status_t AudioStreamOutStub::dump(int fd, const Vector<String16>& args)
141{
142    const size_t SIZE = 256;
143    char buffer[SIZE];
144    String8 result;
145    snprintf(buffer, SIZE, "AudioStreamOutStub::dump\n");
146    snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate());
147    snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize());
148    snprintf(buffer, SIZE, "\tchannels: %d\n", channels());
149    snprintf(buffer, SIZE, "\tformat: %d\n", format());
150    result.append(buffer);
151    ::write(fd, result.string(), result.size());
152    return NO_ERROR;
153}
154
155String8 AudioStreamOutStub::getParameters(const String8& keys)
156{
157    AudioParameter param = AudioParameter(keys);
158    return param.toString();
159}
160
161status_t AudioStreamOutStub::getRenderPosition(uint32_t *dspFrames)
162{
163    return INVALID_OPERATION;
164}
165
166// ----------------------------------------------------------------------------
167
168status_t AudioStreamInStub::set(int *pFormat, uint32_t *pChannels, uint32_t *pRate,
169                AudioSystem::audio_in_acoustics acoustics)
170{
171    return NO_ERROR;
172}
173
174ssize_t AudioStreamInStub::read(void* buffer, ssize_t bytes)
175{
176    // fake timing for audio input
177    usleep(bytes * 1000000 / sizeof(int16_t) / AudioSystem::popCount(channels()) / sampleRate());
178    memset(buffer, 0, bytes);
179    return bytes;
180}
181
182status_t AudioStreamInStub::dump(int fd, const Vector<String16>& args)
183{
184    const size_t SIZE = 256;
185    char buffer[SIZE];
186    String8 result;
187    snprintf(buffer, SIZE, "AudioStreamInStub::dump\n");
188    result.append(buffer);
189    snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate());
190    result.append(buffer);
191    snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize());
192    result.append(buffer);
193    snprintf(buffer, SIZE, "\tchannels: %d\n", channels());
194    result.append(buffer);
195    snprintf(buffer, SIZE, "\tformat: %d\n", format());
196    result.append(buffer);
197    ::write(fd, result.string(), result.size());
198    return NO_ERROR;
199}
200
201String8 AudioStreamInStub::getParameters(const String8& keys)
202{
203    AudioParameter param = AudioParameter(keys);
204    return param.toString();
205}
206
207// ----------------------------------------------------------------------------
208
209}; // namespace android
210