3 ** Copyright 2007, The Android Open Source Project
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
9 ** http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include <cutils/properties.h>
21 //#define LOG_NDEBUG 0
23 #define LOG_TAG "AudioHardwareInterface"
24 #include <utils/Log.h>
25 #include <utils/String8.h>
27 #include "AudioHardwareStub.h"
28 #include "AudioHardwareGeneric.h"
30 #include "A2dpAudioInterface.h"
33 #ifdef ENABLE_AUDIO_DUMP
34 #include "AudioDumpInterface.h"
38 // change to 1 to log routing calls
39 #define LOG_ROUTING_CALLS 1
41 namespace android_audio_legacy {
44 static const char* routingModeStrings[] =
55 static const char* routeNone = "NONE";
57 static const char* displayMode(int mode)
59 if ((mode < AudioSystem::MODE_INVALID) || (mode >= AudioSystem::NUM_MODES))
60 return routingModeStrings[0];
61 return routingModeStrings[mode+3];
65 // ----------------------------------------------------------------------------
67 AudioHardwareInterface* AudioHardwareInterface::create()
72 AudioStreamOut::~AudioStreamOut()
76 AudioStreamIn::~AudioStreamIn() {}
78 AudioHardwareBase::AudioHardwareBase()
83 status_t AudioHardwareBase::setMode(int mode)
86 ALOGD("setMode(%s)", displayMode(mode));
88 if ((mode < 0) || (mode >= AudioSystem::NUM_MODES))
91 return ALREADY_EXISTS;
96 // default implementation
97 status_t AudioHardwareBase::setParameters(const String8& keyValuePairs)
102 // default implementation
103 String8 AudioHardwareBase::getParameters(const String8& keys)
105 AudioParameter param = AudioParameter(keys);
106 return param.toString();
109 // default implementation
110 size_t AudioHardwareBase::getInputBufferSize(uint32_t sampleRate, int format, int channelCount)
112 if (sampleRate != 8000) {
113 ALOGW("getInputBufferSize bad sampling rate: %d", sampleRate);
116 if (format != AudioSystem::PCM_16_BIT) {
117 ALOGW("getInputBufferSize bad format: %d", format);
120 if (channelCount != 1) {
121 ALOGW("getInputBufferSize bad channel count: %d", channelCount);
128 status_t AudioHardwareBase::dumpState(int fd, const Vector<String16>& args)
130 const size_t SIZE = 256;
133 snprintf(buffer, SIZE, "AudioHardwareBase::dumpState\n");
134 result.append(buffer);
135 snprintf(buffer, SIZE, "\tmMode: %d\n", mMode);
136 result.append(buffer);
137 ::write(fd, result.string(), result.size());
138 dump(fd, args); // Dump the state of the concrete child.
142 // ----------------------------------------------------------------------------
144 }; // namespace android