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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "APM::Devices"
     18 //#define LOG_NDEBUG 0
     19 
     20 #include "DeviceDescriptor.h"
     21 #include "AudioGain.h"
     22 #include "HwModule.h"
     23 #include "ConfigParsingUtils.h"
     24 
     25 namespace android {
     26 
     27 DeviceDescriptor::DeviceDescriptor(audio_devices_t type) :
     28     AudioPort(String8(""), AUDIO_PORT_TYPE_DEVICE,
     29               audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK :
     30                                              AUDIO_PORT_ROLE_SOURCE),
     31     mTag(""), mAddress(""), mDeviceType(type), mId(0)
     32 {
     33 
     34 }
     35 
     36 audio_port_handle_t DeviceDescriptor::getId() const
     37 {
     38     return mId;
     39 }
     40 
     41 void DeviceDescriptor::attach(const sp<HwModule>& module)
     42 {
     43     AudioPort::attach(module);
     44     mId = getNextUniqueId();
     45 }
     46 
     47 bool DeviceDescriptor::equals(const sp<DeviceDescriptor>& other) const
     48 {
     49     // Devices are considered equal if they:
     50     // - are of the same type (a device type cannot be AUDIO_DEVICE_NONE)
     51     // - have the same address or one device does not specify the address
     52     // - have the same channel mask or one device does not specify the channel mask
     53     if (other == 0) {
     54         return false;
     55     }
     56     return (mDeviceType == other->mDeviceType) &&
     57            (mAddress == "" || other->mAddress == "" || mAddress == other->mAddress) &&
     58            (mChannelMask == 0 || other->mChannelMask == 0 ||
     59                 mChannelMask == other->mChannelMask);
     60 }
     61 
     62 void DeviceDescriptor::loadGains(cnode *root)
     63 {
     64     AudioPort::loadGains(root);
     65     if (mGains.size() > 0) {
     66         mGains[0]->getDefaultConfig(&mGain);
     67     }
     68 }
     69 
     70 void DeviceVector::refreshTypes()
     71 {
     72     mDeviceTypes = AUDIO_DEVICE_NONE;
     73     for(size_t i = 0; i < size(); i++) {
     74         mDeviceTypes |= itemAt(i)->type();
     75     }
     76     ALOGV("DeviceVector::refreshTypes() mDeviceTypes %08x", mDeviceTypes);
     77 }
     78 
     79 ssize_t DeviceVector::indexOf(const sp<DeviceDescriptor>& item) const
     80 {
     81     for(size_t i = 0; i < size(); i++) {
     82         if (item->equals(itemAt(i))) {
     83             return i;
     84         }
     85     }
     86     return -1;
     87 }
     88 
     89 ssize_t DeviceVector::add(const sp<DeviceDescriptor>& item)
     90 {
     91     ssize_t ret = indexOf(item);
     92 
     93     if (ret < 0) {
     94         ret = SortedVector::add(item);
     95         if (ret >= 0) {
     96             refreshTypes();
     97         }
     98     } else {
     99         ALOGW("DeviceVector::add device %08x already in", item->type());
    100         ret = -1;
    101     }
    102     return ret;
    103 }
    104 
    105 ssize_t DeviceVector::remove(const sp<DeviceDescriptor>& item)
    106 {
    107     size_t i;
    108     ssize_t ret = indexOf(item);
    109 
    110     if (ret < 0) {
    111         ALOGW("DeviceVector::remove device %08x not in", item->type());
    112     } else {
    113         ret = SortedVector::removeAt(ret);
    114         if (ret >= 0) {
    115             refreshTypes();
    116         }
    117     }
    118     return ret;
    119 }
    120 
    121 audio_devices_t DeviceVector::getDevicesFromHwModule(audio_module_handle_t moduleHandle) const
    122 {
    123     audio_devices_t devices = AUDIO_DEVICE_NONE;
    124     for (size_t i = 0; i < size(); i++) {
    125         if (itemAt(i)->getModuleHandle() == moduleHandle) {
    126             devices |= itemAt(i)->type();
    127         }
    128     }
    129     return devices;
    130 }
    131 
    132 void DeviceVector::loadDevicesFromType(audio_devices_t types)
    133 {
    134     DeviceVector deviceList;
    135 
    136     uint32_t role_bit = AUDIO_DEVICE_BIT_IN & types;
    137     types &= ~role_bit;
    138 
    139     while (types) {
    140         uint32_t i = 31 - __builtin_clz(types);
    141         uint32_t type = 1 << i;
    142         types &= ~type;
    143         add(new DeviceDescriptor(type | role_bit));
    144     }
    145 }
    146 
    147 void DeviceVector::loadDevicesFromTag(char *tag,
    148                                        const DeviceVector& declaredDevices)
    149 {
    150     char *devTag = strtok(tag, "|");
    151     while (devTag != NULL) {
    152         if (strlen(devTag) != 0) {
    153             audio_devices_t type = ConfigParsingUtils::stringToEnum(sDeviceTypeToEnumTable,
    154                                  ARRAY_SIZE(sDeviceTypeToEnumTable),
    155                                  devTag);
    156             if (type != AUDIO_DEVICE_NONE) {
    157                 sp<DeviceDescriptor> dev = new DeviceDescriptor(type);
    158                 if (type == AUDIO_DEVICE_IN_REMOTE_SUBMIX ||
    159                         type == AUDIO_DEVICE_OUT_REMOTE_SUBMIX ) {
    160                     dev->mAddress = String8("0");
    161                 }
    162                 add(dev);
    163             } else {
    164                 sp<DeviceDescriptor> deviceDesc =
    165                         declaredDevices.getDeviceFromTag(String8(devTag));
    166                 if (deviceDesc != 0) {
    167                     add(deviceDesc);
    168                 }
    169             }
    170          }
    171          devTag = strtok(NULL, "|");
    172      }
    173 }
    174 
    175 sp<DeviceDescriptor> DeviceVector::getDevice(audio_devices_t type, String8 address) const
    176 {
    177     sp<DeviceDescriptor> device;
    178     for (size_t i = 0; i < size(); i++) {
    179         if (itemAt(i)->type() == type) {
    180             if (address == "" || itemAt(i)->mAddress == address) {
    181                 device = itemAt(i);
    182                 if (itemAt(i)->mAddress == address) {
    183                     break;
    184                 }
    185             }
    186         }
    187     }
    188     ALOGV("DeviceVector::getDevice() for type %08x address %s found %p",
    189           type, address.string(), device.get());
    190     return device;
    191 }
    192 
    193 sp<DeviceDescriptor> DeviceVector::getDeviceFromId(audio_port_handle_t id) const
    194 {
    195     sp<DeviceDescriptor> device;
    196     for (size_t i = 0; i < size(); i++) {
    197         if (itemAt(i)->getId() == id) {
    198             device = itemAt(i);
    199             break;
    200         }
    201     }
    202     return device;
    203 }
    204 
    205 DeviceVector DeviceVector::getDevicesFromType(audio_devices_t type) const
    206 {
    207     DeviceVector devices;
    208     bool isOutput = audio_is_output_devices(type);
    209     type &= ~AUDIO_DEVICE_BIT_IN;
    210     for (size_t i = 0; (i < size()) && (type != AUDIO_DEVICE_NONE); i++) {
    211         bool curIsOutput = audio_is_output_devices(itemAt(i)->mDeviceType);
    212         audio_devices_t curType = itemAt(i)->mDeviceType & ~AUDIO_DEVICE_BIT_IN;
    213         if ((isOutput == curIsOutput) && ((type & curType) != 0)) {
    214             devices.add(itemAt(i));
    215             type &= ~curType;
    216             ALOGV("DeviceVector::getDevicesFromType() for type %x found %p",
    217                   itemAt(i)->type(), itemAt(i).get());
    218         }
    219     }
    220     return devices;
    221 }
    222 
    223 DeviceVector DeviceVector::getDevicesFromTypeAddr(
    224         audio_devices_t type, String8 address) const
    225 {
    226     DeviceVector devices;
    227     for (size_t i = 0; i < size(); i++) {
    228         if (itemAt(i)->type() == type) {
    229             if (itemAt(i)->mAddress == address) {
    230                 devices.add(itemAt(i));
    231             }
    232         }
    233     }
    234     return devices;
    235 }
    236 
    237 sp<DeviceDescriptor> DeviceVector::getDeviceFromTag(const String8& tag) const
    238 {
    239     sp<DeviceDescriptor> device;
    240     for (size_t i = 0; i < size(); i++) {
    241         if (itemAt(i)->mTag == tag) {
    242             device = itemAt(i);
    243             break;
    244         }
    245     }
    246     return device;
    247 }
    248 
    249 
    250 status_t DeviceVector::dump(int fd, const String8 &direction) const
    251 {
    252     const size_t SIZE = 256;
    253     char buffer[SIZE];
    254 
    255     snprintf(buffer, SIZE, "\n Available %s devices:\n", direction.string());
    256     write(fd, buffer, strlen(buffer));
    257     for (size_t i = 0; i < size(); i++) {
    258         itemAt(i)->dump(fd, 2, i);
    259     }
    260     return NO_ERROR;
    261 }
    262 
    263 audio_policy_dev_state_t DeviceVector::getDeviceConnectionState(const sp<DeviceDescriptor> &devDesc) const
    264 {
    265     ssize_t index = indexOf(devDesc);
    266     return index >= 0 ? AUDIO_POLICY_DEVICE_STATE_AVAILABLE : AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
    267 }
    268 
    269 void DeviceDescriptor::toAudioPortConfig(struct audio_port_config *dstConfig,
    270                                          const struct audio_port_config *srcConfig) const
    271 {
    272     dstConfig->config_mask = AUDIO_PORT_CONFIG_CHANNEL_MASK|AUDIO_PORT_CONFIG_GAIN;
    273     if (srcConfig != NULL) {
    274         dstConfig->config_mask |= srcConfig->config_mask;
    275     }
    276 
    277     AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig);
    278 
    279     dstConfig->id = mId;
    280     dstConfig->role = audio_is_output_device(mDeviceType) ?
    281                         AUDIO_PORT_ROLE_SINK : AUDIO_PORT_ROLE_SOURCE;
    282     dstConfig->type = AUDIO_PORT_TYPE_DEVICE;
    283     dstConfig->ext.device.type = mDeviceType;
    284 
    285     //TODO Understand why this test is necessary. i.e. why at boot time does it crash
    286     // without the test?
    287     // This has been demonstrated to NOT be true (at start up)
    288     // ALOG_ASSERT(mModule != NULL);
    289     dstConfig->ext.device.hw_module = mModule != 0 ? mModule->mHandle : AUDIO_IO_HANDLE_NONE;
    290     strncpy(dstConfig->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN);
    291 }
    292 
    293 void DeviceDescriptor::toAudioPort(struct audio_port *port) const
    294 {
    295     ALOGV("DeviceDescriptor::toAudioPort() handle %d type %x", mId, mDeviceType);
    296     AudioPort::toAudioPort(port);
    297     port->id = mId;
    298     toAudioPortConfig(&port->active_config);
    299     port->ext.device.type = mDeviceType;
    300     port->ext.device.hw_module = mModule->mHandle;
    301     strncpy(port->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN);
    302 }
    303 
    304 void DeviceDescriptor::importAudioPort(const sp<AudioPort> port) {
    305     AudioPort::importAudioPort(port);
    306     mSamplingRate = port->pickSamplingRate();
    307     mFormat = port->pickFormat();
    308     mChannelMask = port->pickChannelMask();
    309 }
    310 
    311 status_t DeviceDescriptor::dump(int fd, int spaces, int index) const
    312 {
    313     const size_t SIZE = 256;
    314     char buffer[SIZE];
    315     String8 result;
    316 
    317     snprintf(buffer, SIZE, "%*sDevice %d:\n", spaces, "", index+1);
    318     result.append(buffer);
    319     if (mId != 0) {
    320         snprintf(buffer, SIZE, "%*s- id: %2d\n", spaces, "", mId);
    321         result.append(buffer);
    322     }
    323     snprintf(buffer, SIZE, "%*s- type: %-48s\n", spaces, "",
    324             ConfigParsingUtils::enumToString(sDeviceTypeToEnumTable,
    325                     ARRAY_SIZE(sDeviceTypeToEnumTable),
    326                     mDeviceType));
    327     result.append(buffer);
    328     if (mAddress.size() != 0) {
    329         snprintf(buffer, SIZE, "%*s- address: %-32s\n", spaces, "", mAddress.string());
    330         result.append(buffer);
    331     }
    332     write(fd, result.string(), result.size());
    333     AudioPort::dump(fd, spaces);
    334 
    335     return NO_ERROR;
    336 }
    337 
    338 void DeviceDescriptor::log() const
    339 {
    340     ALOGI("Device id:%d type:0x%X:%s, addr:%s",
    341           mId,
    342           mDeviceType,
    343           ConfigParsingUtils::enumToString(
    344              sDeviceNameToEnumTable, ARRAY_SIZE(sDeviceNameToEnumTable), mDeviceType),
    345           mAddress.string());
    346 
    347     AudioPort::log("  ");
    348 }
    349 
    350 }; // namespace android
    351