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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "device/hid/hid_connection_mac.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/callback.h" | |
| 9 #include "base/mac/foundation_util.h" | |
| 10 #include "base/threading/thread_restrictions.h" | |
| 11 #include "base/tuple.h" | |
| 12 #include "device/hid/hid_service.h" | |
| 13 #include "device/hid/hid_service_mac.h" | |
| 14 #include "net/base/io_buffer.h" | |
| 15 | |
| 16 #include <CoreFoundation/CoreFoundation.h> | |
| 17 #include <IOKit/hid/IOHIDManager.h> | |
| 18 | |
| 19 namespace device { | |
| 20 | |
| 21 HidConnectionMac::HidConnectionMac(HidServiceMac* service, | |
| 22 HidDeviceInfo device_info, | |
| 23 IOHIDDeviceRef device) | |
| 24 : HidConnection(device_info), | |
| 25 service_(service), | |
| 26 device_(device), | |
| 27 disconnected_(false) { | |
| 28 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 29 | |
| 30 message_loop_ = base::MessageLoopProxy::current(); | |
| 31 | |
| 32 CFRetain(device); | |
| 33 inbound_buffer_.reset((uint8_t*) malloc(device_info.input_report_size + 1)); | |
| 34 IOHIDDeviceRegisterInputReportCallback( | |
| 35 device_.get(), | |
| 36 inbound_buffer_.get(), | |
| 37 device_info.input_report_size + 1, | |
| 38 &HidConnectionMac::InputReportCallback, | |
| 39 this); | |
| 40 IOHIDDeviceOpen(device_, kIOHIDOptionsTypeNone); | |
| 41 } | |
| 42 HidConnectionMac::~HidConnectionMac() { | |
| 43 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 44 | |
| 45 while (read_queue_.size()) { | |
| 46 read_queue_.front().c.Run(false, 0); | |
| 47 read_queue_.pop(); | |
| 48 } | |
| 49 | |
| 50 IOHIDDeviceClose(device_, kIOHIDOptionsTypeNone); | |
| 51 } | |
| 52 | |
| 53 void HidConnectionMac::InputReportCallback(void * context, | |
| 54 IOReturn result, | |
| 55 void * sender, | |
| 56 IOHIDReportType type, | |
| 57 uint32_t reportID, | |
| 58 uint8_t * report, | |
| 59 CFIndex reportLength) { | |
| 60 HidConnectionMac* connection = reinterpret_cast<HidConnectionMac*>(context); | |
| 61 size_t length = reportLength + (reportID != 0); | |
| 62 scoped_refptr<net::IOBuffer> buffer(new net::IOBuffer(length)); | |
| 63 if (reportID) { | |
| 64 buffer->data()[0] = reportID; | |
| 65 memcpy(buffer->data() + 1, report, reportLength); | |
| 66 } else { | |
| 67 memcpy(buffer->data(), report, reportLength); | |
| 68 } | |
| 69 connection->message_loop_->PostTask( | |
| 70 FROM_HERE, | |
| 71 base::Bind(&HidConnectionMac::ProcessInputReport, | |
| 72 connection, | |
| 73 type, | |
| 74 buffer, | |
| 75 length)); | |
| 76 } | |
| 77 | |
| 78 void HidConnectionMac::ProcessReadQueue() { | |
| 79 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 80 | |
| 81 while(read_queue_.size() && input_reports_.size()) { | |
| 82 PendingRead read = read_queue_.front(); | |
| 83 read_queue_.pop(); | |
| 84 PendingReport report = input_reports_.front(); | |
| 85 | |
| 86 if (read.b < report.second) { | |
| 87 read.c.Run(false, report.second); | |
| 88 } else { | |
| 89 memcpy(read.a->data(), report.first->data(), report.second); | |
| 90 input_reports_.pop(); | |
| 91 read.c.Run(true, report.second); | |
| 92 } | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 void HidConnectionMac::ProcessInputReport(IOHIDReportType type, | |
| 97 scoped_refptr<net::IOBuffer> report, | |
| 98 CFIndex reportLength) { | |
| 99 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 100 | |
| 101 input_reports_.push(std::make_pair(report, reportLength)); | |
| 102 ProcessReadQueue(); | |
| 103 } | |
| 104 | |
| 105 void HidConnectionMac::WriteReport(IOHIDReportType type, | |
| 106 scoped_refptr<net::IOBuffer> buffer, | |
| 107 size_t size, | |
| 108 const IOCallback& callback) { | |
| 109 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 110 if (disconnected_ || !device_) { | |
| 111 callback.Run(false, 0); | |
| 112 return; | |
| 113 } | |
| 114 const unsigned char* data_to_send = | |
| 115 reinterpret_cast<const unsigned char*>(buffer->data()); | |
| 116 size_t length_to_send = size; | |
| 117 if (data_to_send[0] == 0x0) { | |
| 118 /* Not using numbered Reports. | |
| 119 Don't send the report number. */ | |
| 120 ++data_to_send; | |
| 121 --length_to_send; | |
| 122 } | |
| 123 IOReturn res = IOHIDDeviceSetReport(device_.get(), | |
| 124 type, | |
| 125 buffer->data()[0], /* Report ID*/ | |
| 126 data_to_send, | |
| 127 length_to_send); | |
| 128 if (res != kIOReturnSuccess) { | |
| 129 callback.Run(false, 0); | |
| 130 } else { | |
| 131 callback.Run(true, size); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 void HidConnectionMac::Read(scoped_refptr<net::IOBuffer> buffer, | |
| 136 size_t size, | |
| 137 const IOCallback& callback) { | |
| 138 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 139 if (disconnected_ || !device_) { | |
| 140 callback.Run(false, 0); | |
| 141 return; | |
| 142 } | |
| 143 read_queue_.push(MakeTuple(buffer, size, callback)); | |
| 144 ProcessReadQueue(); | |
| 145 } | |
| 146 | |
| 147 void HidConnectionMac::Write(scoped_refptr<net::IOBuffer> buffer, | |
| 148 size_t size, | |
| 149 const IOCallback& callback) { | |
| 150 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 151 WriteReport(kIOHIDReportTypeOutput, buffer, size, callback); | |
| 152 } | |
| 153 | |
| 154 void HidConnectionMac::SendFeatureReport(scoped_refptr<net::IOBuffer> buffer, | |
| 155 size_t size, | |
| 156 const IOCallback& callback) { | |
| 157 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 158 WriteReport(kIOHIDReportTypeFeature, buffer, size, callback); | |
| 159 } | |
| 160 | |
| 161 void HidConnectionMac::GetFeatureReport(scoped_refptr<net::IOBuffer> buffer, | |
| 162 size_t size, | |
| 163 const IOCallback& callback) { | |
| 164 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 165 if (disconnected_ || !device_ || device_info_.feature_report_size == 0) { | |
| 166 callback.Run(false, 0); | |
| 167 return; | |
| 168 } | |
| 169 | |
| 170 if (device_info_.feature_report_size != 0 && | |
| 171 device_info_.feature_report_size != size) { | |
| 172 callback.Run(false, 0); | |
| 173 return; | |
| 174 } | |
| 175 | |
| 176 CFIndex len = device_info_.feature_report_size; | |
| 177 IOReturn res = IOHIDDeviceGetReport(device_, | |
| 178 kIOHIDReportTypeFeature, | |
| 179 0, | |
| 180 (uint8_t*) buffer->data(), | |
| 181 &len); | |
| 182 if (res == kIOReturnSuccess) | |
| 183 callback.Run(true, len); | |
| 184 else | |
| 185 callback.Run(false, 0); | |
| 186 } | |
| 187 | |
| 188 } // namespace device | |
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