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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 <audio_utils/string.h>
     21 #include "DeviceDescriptor.h"
     22 #include "TypeConverter.h"
     23 #include "AudioGain.h"
     24 #include "HwModule.h"
     25 
     26 namespace android {
     27 
     28 DeviceDescriptor::DeviceDescriptor(audio_devices_t type, const String8 &tagName) :
     29     AudioPort(String8(""), AUDIO_PORT_TYPE_DEVICE,
     30               audio_is_output_device(type) ? AUDIO_PORT_ROLE_SINK :
     31                                              AUDIO_PORT_ROLE_SOURCE),
     32     mAddress(""), mTagName(tagName), mDeviceType(type), mId(0)
     33 {
     34     if (type == AUDIO_DEVICE_IN_REMOTE_SUBMIX || type == AUDIO_DEVICE_OUT_REMOTE_SUBMIX ) {
     35         mAddress = String8("0");
     36     }
     37 }
     38 
     39 audio_port_handle_t DeviceDescriptor::getId() const
     40 {
     41     return mId;
     42 }
     43 
     44 void DeviceDescriptor::attach(const sp<HwModule>& module)
     45 {
     46     AudioPort::attach(module);
     47     mId = getNextUniqueId();
     48 }
     49 
     50 bool DeviceDescriptor::equals(const sp<DeviceDescriptor>& other) const
     51 {
     52     // Devices are considered equal if they:
     53     // - are of the same type (a device type cannot be AUDIO_DEVICE_NONE)
     54     // - have the same address
     55     if (other == 0) {
     56         return false;
     57     }
     58     return (mDeviceType == other->mDeviceType) && (mAddress == other->mAddress);
     59 }
     60 
     61 void DeviceVector::refreshTypes()
     62 {
     63     mDeviceTypes = AUDIO_DEVICE_NONE;
     64     for (size_t i = 0; i < size(); i++) {
     65         mDeviceTypes |= itemAt(i)->type();
     66     }
     67     ALOGV("DeviceVector::refreshTypes() mDeviceTypes %08x", mDeviceTypes);
     68 }
     69 
     70 ssize_t DeviceVector::indexOf(const sp<DeviceDescriptor>& item) const
     71 {
     72     for (size_t i = 0; i < size(); i++) {
     73         if (item->equals(itemAt(i))) {
     74             return i;
     75         }
     76     }
     77     return -1;
     78 }
     79 
     80 void DeviceVector::add(const DeviceVector &devices)
     81 {
     82     bool added = false;
     83     for (const auto& device : devices) {
     84         if (indexOf(device) < 0 && SortedVector::add(device) >= 0) {
     85             added = true;
     86         }
     87     }
     88     if (added) {
     89         refreshTypes();
     90     }
     91 }
     92 
     93 ssize_t DeviceVector::add(const sp<DeviceDescriptor>& item)
     94 {
     95     ssize_t ret = indexOf(item);
     96 
     97     if (ret < 0) {
     98         ret = SortedVector::add(item);
     99         if (ret >= 0) {
    100             refreshTypes();
    101         }
    102     } else {
    103         ALOGW("DeviceVector::add device %08x already in", item->type());
    104         ret = -1;
    105     }
    106     return ret;
    107 }
    108 
    109 ssize_t DeviceVector::remove(const sp<DeviceDescriptor>& item)
    110 {
    111     ssize_t ret = indexOf(item);
    112 
    113     if (ret < 0) {
    114         ALOGW("DeviceVector::remove device %08x not in", item->type());
    115     } else {
    116         ret = SortedVector::removeAt(ret);
    117         if (ret >= 0) {
    118             refreshTypes();
    119         }
    120     }
    121     return ret;
    122 }
    123 
    124 audio_devices_t DeviceVector::getDevicesFromHwModule(audio_module_handle_t moduleHandle) const
    125 {
    126     audio_devices_t devices = AUDIO_DEVICE_NONE;
    127     for (size_t i = 0; i < size(); i++) {
    128         if (itemAt(i)->getModuleHandle() == moduleHandle) {
    129             devices |= itemAt(i)->type();
    130         }
    131     }
    132     return devices;
    133 }
    134 
    135 sp<DeviceDescriptor> DeviceVector::getDevice(audio_devices_t type, const String8& address) const
    136 {
    137     sp<DeviceDescriptor> device;
    138     for (size_t i = 0; i < size(); i++) {
    139         if (itemAt(i)->type() == type) {
    140             if (address == "" || itemAt(i)->mAddress == address) {
    141                 device = itemAt(i);
    142                 if (itemAt(i)->mAddress == address) {
    143                     break;
    144                 }
    145             }
    146         }
    147     }
    148     ALOGV("DeviceVector::getDevice() for type %08x address %s found %p",
    149           type, address.string(), device.get());
    150     return device;
    151 }
    152 
    153 sp<DeviceDescriptor> DeviceVector::getDeviceFromId(audio_port_handle_t id) const
    154 {
    155     for (const auto& device : *this) {
    156         if (device->getId() == id) {
    157             return device;
    158         }
    159     }
    160     return nullptr;
    161 }
    162 
    163 DeviceVector DeviceVector::getDevicesFromType(audio_devices_t type) const
    164 {
    165     DeviceVector devices;
    166     bool isOutput = audio_is_output_devices(type);
    167     type &= ~AUDIO_DEVICE_BIT_IN;
    168     for (size_t i = 0; (i < size()) && (type != AUDIO_DEVICE_NONE); i++) {
    169         bool curIsOutput = audio_is_output_devices(itemAt(i)->mDeviceType);
    170         audio_devices_t curType = itemAt(i)->mDeviceType & ~AUDIO_DEVICE_BIT_IN;
    171         if ((isOutput == curIsOutput) && ((type & curType) != 0)) {
    172             devices.add(itemAt(i));
    173             type &= ~curType;
    174             ALOGV("DeviceVector::getDevicesFromType() for type %x found %p",
    175                   itemAt(i)->type(), itemAt(i).get());
    176         }
    177     }
    178     return devices;
    179 }
    180 
    181 DeviceVector DeviceVector::getDevicesFromTypeAddr(
    182         audio_devices_t type, const String8& address) const
    183 {
    184     DeviceVector devices;
    185     for (const auto& device : *this) {
    186         if (device->type() == type && device->mAddress == address) {
    187             devices.add(device);
    188         }
    189     }
    190     return devices;
    191 }
    192 
    193 sp<DeviceDescriptor> DeviceVector::getDeviceFromTagName(const String8 &tagName) const
    194 {
    195     for (const auto& device : *this) {
    196         if (device->getTagName() == tagName) {
    197             return device;
    198         }
    199     }
    200     return nullptr;
    201 }
    202 
    203 status_t DeviceVector::dump(int fd, const String8 &tag, int spaces, bool verbose) const
    204 {
    205     if (isEmpty()) {
    206         return NO_ERROR;
    207     }
    208     const size_t SIZE = 256;
    209     char buffer[SIZE];
    210 
    211     snprintf(buffer, SIZE, "%*s- %s devices:\n", spaces, "", tag.string());
    212     write(fd, buffer, strlen(buffer));
    213     for (size_t i = 0; i < size(); i++) {
    214         itemAt(i)->dump(fd, spaces + 2, i, verbose);
    215     }
    216     return NO_ERROR;
    217 }
    218 
    219 void DeviceDescriptor::toAudioPortConfig(struct audio_port_config *dstConfig,
    220                                          const struct audio_port_config *srcConfig) const
    221 {
    222     dstConfig->config_mask = AUDIO_PORT_CONFIG_GAIN;
    223     if (mSamplingRate != 0) {
    224         dstConfig->config_mask |= AUDIO_PORT_CONFIG_SAMPLE_RATE;
    225     }
    226     if (mChannelMask != AUDIO_CHANNEL_NONE) {
    227         dstConfig->config_mask |= AUDIO_PORT_CONFIG_CHANNEL_MASK;
    228     }
    229     if (mFormat != AUDIO_FORMAT_INVALID) {
    230         dstConfig->config_mask |= AUDIO_PORT_CONFIG_FORMAT;
    231     }
    232 
    233     if (srcConfig != NULL) {
    234         dstConfig->config_mask |= srcConfig->config_mask;
    235     }
    236 
    237     AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig);
    238 
    239     dstConfig->id = mId;
    240     dstConfig->role = audio_is_output_device(mDeviceType) ?
    241                         AUDIO_PORT_ROLE_SINK : AUDIO_PORT_ROLE_SOURCE;
    242     dstConfig->type = AUDIO_PORT_TYPE_DEVICE;
    243     dstConfig->ext.device.type = mDeviceType;
    244 
    245     //TODO Understand why this test is necessary. i.e. why at boot time does it crash
    246     // without the test?
    247     // This has been demonstrated to NOT be true (at start up)
    248     // ALOG_ASSERT(mModule != NULL);
    249     dstConfig->ext.device.hw_module =
    250             mModule != 0 ? mModule->getHandle() : AUDIO_MODULE_HANDLE_NONE;
    251     (void)audio_utils_strlcpy_zerofill(dstConfig->ext.device.address, mAddress.string());
    252 }
    253 
    254 void DeviceDescriptor::toAudioPort(struct audio_port *port) const
    255 {
    256     ALOGV("DeviceDescriptor::toAudioPort() handle %d type %x", mId, mDeviceType);
    257     AudioPort::toAudioPort(port);
    258     port->id = mId;
    259     toAudioPortConfig(&port->active_config);
    260     port->ext.device.type = mDeviceType;
    261     port->ext.device.hw_module = mModule->getHandle();
    262     (void)audio_utils_strlcpy_zerofill(port->ext.device.address, mAddress.string());
    263 }
    264 
    265 void DeviceDescriptor::importAudioPort(const sp<AudioPort>& port, bool force) {
    266     if (!force && !port->hasDynamicAudioProfile()) {
    267         return;
    268     }
    269     AudioPort::importAudioPort(port);
    270     port->pickAudioProfile(mSamplingRate, mChannelMask, mFormat);
    271 }
    272 
    273 status_t DeviceDescriptor::dump(int fd, int spaces, int index, bool verbose) const
    274 {
    275     const size_t SIZE = 256;
    276     char buffer[SIZE];
    277     String8 result;
    278 
    279     snprintf(buffer, SIZE, "%*sDevice %d:\n", spaces, "", index+1);
    280     result.append(buffer);
    281     if (mId != 0) {
    282         snprintf(buffer, SIZE, "%*s- id: %2d\n", spaces, "", mId);
    283         result.append(buffer);
    284     }
    285     if (!mTagName.isEmpty()) {
    286         snprintf(buffer, SIZE, "%*s- tag name: %s\n", spaces, "", mTagName.string());
    287         result.append(buffer);
    288     }
    289     std::string deviceLiteral;
    290     if (deviceToString(mDeviceType, deviceLiteral)) {
    291         snprintf(buffer, SIZE, "%*s- type: %-48s\n", spaces, "", deviceLiteral.c_str());
    292         result.append(buffer);
    293     }
    294     if (mAddress.size() != 0) {
    295         snprintf(buffer, SIZE, "%*s- address: %-32s\n", spaces, "", mAddress.string());
    296         result.append(buffer);
    297     }
    298     write(fd, result.string(), result.size());
    299     AudioPort::dump(fd, spaces, verbose);
    300 
    301     return NO_ERROR;
    302 }
    303 
    304 void DeviceDescriptor::log() const
    305 {
    306     std::string device;
    307     deviceToString(mDeviceType, device);
    308     ALOGI("Device id:%d type:0x%X:%s, addr:%s", mId,  mDeviceType, device.c_str(),
    309           mAddress.string());
    310 
    311     AudioPort::log("  ");
    312 }
    313 
    314 } // namespace android
    315