ref: 26739698504b1a2e2c8f44654727736613f61bce
dir: /external/SDL2/src/hidapi/android/hid.cpp/
//=================== Copyright Valve Corporation, All rights reserved. =======
//
// Purpose: A wrapper implementing "HID" API for Android
//
// This layer glues the hidapi API to Android's USB and BLE stack.
//
//=============================================================================
#include <jni.h>
#include <android/log.h>
#include <pthread.h>
#include <errno.h> // For ETIMEDOUT and ECONNRESET
#include <stdlib.h> // For malloc() and free()
#include <string.h> // For memcpy()
#define TAG "hidapi"
// Have error log always available
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
#ifdef DEBUG
#define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, TAG, __VA_ARGS__)
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__)
#else
#define LOGV(...)
#define LOGD(...)
#endif
#define SDL_JAVA_PREFIX org_libsdl_app
#define CONCAT1(prefix, class, function) CONCAT2(prefix, class, function)
#define CONCAT2(prefix, class, function) Java_ ## prefix ## _ ## class ## _ ## function
#define HID_DEVICE_MANAGER_JAVA_INTERFACE(function) CONCAT1(SDL_JAVA_PREFIX, HIDDeviceManager, function)
#include "../hidapi/hidapi.h"
typedef uint32_t uint32;
typedef uint64_t uint64;
struct hid_device_
{
int m_nId;
int m_nDeviceRefCount;
};
static JavaVM *g_JVM;
static pthread_key_t g_ThreadKey;
template<class T>
class hid_device_ref
{
public:
hid_device_ref( T *pObject = nullptr ) : m_pObject( nullptr )
{
SetObject( pObject );
}
hid_device_ref( const hid_device_ref &rhs ) : m_pObject( nullptr )
{
SetObject( rhs.GetObject() );
}
~hid_device_ref()
{
SetObject( nullptr );
}
void SetObject( T *pObject )
{
if ( m_pObject && m_pObject->DecrementRefCount() == 0 )
{
delete m_pObject;
}
m_pObject = pObject;
if ( m_pObject )
{
m_pObject->IncrementRefCount();
}
}
hid_device_ref &operator =( T *pObject )
{
SetObject( pObject );
return *this;
}
hid_device_ref &operator =( const hid_device_ref &rhs )
{
SetObject( rhs.GetObject() );
return *this;
}
T *GetObject() const
{
return m_pObject;
}
T* operator->() const
{
return m_pObject;
}
operator bool() const
{
return ( m_pObject != nullptr );
}
private:
T *m_pObject;
};
class hid_mutex_guard
{
public:
hid_mutex_guard( pthread_mutex_t *pMutex ) : m_pMutex( pMutex )
{
pthread_mutex_lock( m_pMutex );
}
~hid_mutex_guard()
{
pthread_mutex_unlock( m_pMutex );
}
private:
pthread_mutex_t *m_pMutex;
};
class hid_buffer
{
public:
hid_buffer() : m_pData( nullptr ), m_nSize( 0 ), m_nAllocated( 0 )
{
}
hid_buffer( const uint8_t *pData, size_t nSize ) : m_pData( nullptr ), m_nSize( 0 ), m_nAllocated( 0 )
{
assign( pData, nSize );
}
~hid_buffer()
{
delete[] m_pData;
}
void assign( const uint8_t *pData, size_t nSize )
{
if ( nSize > m_nAllocated )
{
delete[] m_pData;
m_pData = new uint8_t[ nSize ];
m_nAllocated = nSize;
}
m_nSize = nSize;
memcpy( m_pData, pData, nSize );
}
void clear()
{
m_nSize = 0;
}
size_t size() const
{
return m_nSize;
}
const uint8_t *data() const
{
return m_pData;
}
private:
uint8_t *m_pData;
size_t m_nSize;
size_t m_nAllocated;
};
class hid_buffer_pool
{
public:
hid_buffer_pool() : m_nSize( 0 ), m_pHead( nullptr ), m_pTail( nullptr ), m_pFree( nullptr )
{
}
~hid_buffer_pool()
{
clear();
while ( m_pFree )
{
hid_buffer_entry *pEntry = m_pFree;
m_pFree = m_pFree->m_pNext;
delete pEntry;
}
}
size_t size() const { return m_nSize; }
const hid_buffer &front() const { return m_pHead->m_buffer; }
void pop_front()
{
hid_buffer_entry *pEntry = m_pHead;
if ( pEntry )
{
m_pHead = pEntry->m_pNext;
if ( !m_pHead )
{
m_pTail = nullptr;
}
pEntry->m_pNext = m_pFree;
m_pFree = pEntry;
--m_nSize;
}
}
void emplace_back( const uint8_t *pData, size_t nSize )
{
hid_buffer_entry *pEntry;
if ( m_pFree )
{
pEntry = m_pFree;
m_pFree = m_pFree->m_pNext;
}
else
{
pEntry = new hid_buffer_entry;
}
pEntry->m_pNext = nullptr;
if ( m_pTail )
{
m_pTail->m_pNext = pEntry;
}
else
{
m_pHead = pEntry;
}
m_pTail = pEntry;
pEntry->m_buffer.assign( pData, nSize );
++m_nSize;
}
void clear()
{
while ( size() > 0 )
{
pop_front();
}
}
private:
struct hid_buffer_entry
{
hid_buffer m_buffer;
hid_buffer_entry *m_pNext;
};
size_t m_nSize;
hid_buffer_entry *m_pHead;
hid_buffer_entry *m_pTail;
hid_buffer_entry *m_pFree;
};
static jbyteArray NewByteArray( JNIEnv* env, const uint8_t *pData, size_t nDataLen )
{
jbyteArray array = env->NewByteArray( nDataLen );
jbyte *pBuf = env->GetByteArrayElements( array, NULL );
memcpy( pBuf, pData, nDataLen );
env->ReleaseByteArrayElements( array, pBuf, 0 );
return array;
}
static char *CreateStringFromJString( JNIEnv *env, const jstring &sString )
{
size_t nLength = env->GetStringUTFLength( sString );
const char *pjChars = env->GetStringUTFChars( sString, NULL );
char *psString = (char*)malloc( nLength + 1 );
memcpy( psString, pjChars, nLength );
psString[ nLength ] = '\0';
env->ReleaseStringUTFChars( sString, pjChars );
return psString;
}
static wchar_t *CreateWStringFromJString( JNIEnv *env, const jstring &sString )
{
size_t nLength = env->GetStringLength( sString );
const jchar *pjChars = env->GetStringChars( sString, NULL );
wchar_t *pwString = (wchar_t*)malloc( ( nLength + 1 ) * sizeof( wchar_t ) );
wchar_t *pwChars = pwString;
for ( size_t iIndex = 0; iIndex < nLength; ++iIndex )
{
pwChars[ iIndex ] = pjChars[ iIndex ];
}
pwString[ nLength ] = '\0';
env->ReleaseStringChars( sString, pjChars );
return pwString;
}
static wchar_t *CreateWStringFromWString( const wchar_t *pwSrc )
{
size_t nLength = wcslen( pwSrc );
wchar_t *pwString = (wchar_t*)malloc( ( nLength + 1 ) * sizeof( wchar_t ) );
memcpy( pwString, pwSrc, nLength * sizeof( wchar_t ) );
pwString[ nLength ] = '\0';
return pwString;
}
static hid_device_info *CopyHIDDeviceInfo( const hid_device_info *pInfo )
{
hid_device_info *pCopy = new hid_device_info;
*pCopy = *pInfo;
pCopy->path = strdup( pInfo->path );
pCopy->product_string = CreateWStringFromWString( pInfo->product_string );
pCopy->manufacturer_string = CreateWStringFromWString( pInfo->manufacturer_string );
pCopy->serial_number = CreateWStringFromWString( pInfo->serial_number );
return pCopy;
}
static void FreeHIDDeviceInfo( hid_device_info *pInfo )
{
free( pInfo->path );
free( pInfo->serial_number );
free( pInfo->manufacturer_string );
free( pInfo->product_string );
delete pInfo;
}
static jclass g_HIDDeviceManagerCallbackClass;
static jobject g_HIDDeviceManagerCallbackHandler;
static jmethodID g_midHIDDeviceManagerOpen;
static jmethodID g_midHIDDeviceManagerSendOutputReport;
static jmethodID g_midHIDDeviceManagerSendFeatureReport;
static jmethodID g_midHIDDeviceManagerGetFeatureReport;
static jmethodID g_midHIDDeviceManagerClose;
static uint64_t get_timespec_ms( const struct timespec &ts )
{
return (uint64_t)ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
}
class CHIDDevice
{
public:
CHIDDevice( int nDeviceID, hid_device_info *pInfo )
{
m_nId = nDeviceID;
m_pInfo = pInfo;
// The Bluetooth Steam Controller needs special handling
const int VALVE_USB_VID = 0x28DE;
const int D0G_BLE2_PID = 0x1106;
if ( pInfo->vendor_id == VALVE_USB_VID && pInfo->product_id == D0G_BLE2_PID )
{
m_bIsBLESteamController = true;
}
}
~CHIDDevice()
{
FreeHIDDeviceInfo( m_pInfo );
// Note that we don't delete m_pDevice, as the app may still have a reference to it
}
int IncrementRefCount()
{
int nValue;
pthread_mutex_lock( &m_refCountLock );
nValue = ++m_nRefCount;
pthread_mutex_unlock( &m_refCountLock );
return nValue;
}
int DecrementRefCount()
{
int nValue;
pthread_mutex_lock( &m_refCountLock );
nValue = --m_nRefCount;
pthread_mutex_unlock( &m_refCountLock );
return nValue;
}
int GetId()
{
return m_nId;
}
const hid_device_info *GetDeviceInfo()
{
return m_pInfo;
}
hid_device *GetDevice()
{
return m_pDevice;
}
void ExceptionCheck( JNIEnv *env, const char *pszMethodName )
{
if ( env->ExceptionCheck() )
{
// Get our exception
jthrowable jExcept = env->ExceptionOccurred();
// Clear the exception so we can call JNI again
env->ExceptionClear();
// Get our exception message
jclass jExceptClass = env->GetObjectClass( jExcept );
jmethodID jMessageMethod = env->GetMethodID( jExceptClass, "getMessage", "()Ljava/lang/String;" );
jstring jMessage = (jstring)( env->CallObjectMethod( jExcept, jMessageMethod ) );
const char *pszMessage = env->GetStringUTFChars( jMessage, NULL );
// ...and log it.
LOGE( "CHIDDevice::%s threw an exception: %s", pszMethodName, pszMessage );
// Cleanup
env->ReleaseStringUTFChars( jMessage, pszMessage );
env->DeleteLocalRef( jMessage );
env->DeleteLocalRef( jExceptClass );
env->DeleteLocalRef( jExcept );
}
}
bool BOpen()
{
// Make sure thread is attached to JVM/env
JNIEnv *env;
g_JVM->AttachCurrentThread( &env, NULL );
pthread_setspecific( g_ThreadKey, (void*)env );
m_bIsWaitingForOpen = false;
m_bOpenResult = env->CallBooleanMethod( g_HIDDeviceManagerCallbackHandler, g_midHIDDeviceManagerOpen, m_nId );
ExceptionCheck( env, "BOpen" );
if ( m_bIsWaitingForOpen )
{
hid_mutex_guard cvl( &m_cvLock );
const int OPEN_TIMEOUT_SECONDS = 60;
struct timespec ts, endtime;
clock_gettime( CLOCK_REALTIME, &ts );
endtime = ts;
endtime.tv_sec += OPEN_TIMEOUT_SECONDS;
do
{
if ( pthread_cond_timedwait( &m_cv, &m_cvLock, &endtime ) != 0 )
{
break;
}
}
while ( m_bIsWaitingForOpen && get_timespec_ms( ts ) < get_timespec_ms( endtime ) );
}
if ( !m_bOpenResult )
{
if ( m_bIsWaitingForOpen )
{
LOGV( "Device open failed - timed out waiting for device permission" );
}
else
{
LOGV( "Device open failed" );
}
return false;
}
m_pDevice = new hid_device;
m_pDevice->m_nId = m_nId;
m_pDevice->m_nDeviceRefCount = 1;
LOGD("Creating device %d (%p), refCount = 1\n", m_pDevice->m_nId, m_pDevice);
return true;
}
void SetOpenPending()
{
m_bIsWaitingForOpen = true;
}
void SetOpenResult( bool bResult )
{
if ( m_bIsWaitingForOpen )
{
m_bOpenResult = bResult;
m_bIsWaitingForOpen = false;
pthread_cond_signal( &m_cv );
}
}
void ProcessInput( const uint8_t *pBuf, size_t nBufSize )
{
hid_mutex_guard l( &m_dataLock );
size_t MAX_REPORT_QUEUE_SIZE = 16;
if ( m_vecData.size() >= MAX_REPORT_QUEUE_SIZE )
{
m_vecData.pop_front();
}
m_vecData.emplace_back( pBuf, nBufSize );
}
int GetInput( unsigned char *data, size_t length )
{
hid_mutex_guard l( &m_dataLock );
if ( m_vecData.size() == 0 )
{
// LOGV( "hid_read_timeout no data available" );
return 0;
}
const hid_buffer &buffer = m_vecData.front();
size_t nDataLen = buffer.size() > length ? length : buffer.size();
if ( m_bIsBLESteamController )
{
data[0] = 0x03;
memcpy( data + 1, buffer.data(), nDataLen );
++nDataLen;
}
else
{
memcpy( data, buffer.data(), nDataLen );
}
m_vecData.pop_front();
// LOGV("Read %u bytes", nDataLen);
// LOGV("%02x %02x %02x %02x %02x %02x %02x %02x ....",
// data[0], data[1], data[2], data[3],
// data[4], data[5], data[6], data[7]);
return nDataLen;
}
int SendOutputReport( const unsigned char *pData, size_t nDataLen )
{
// Make sure thread is attached to JVM/env
JNIEnv *env;
g_JVM->AttachCurrentThread( &env, NULL );
pthread_setspecific( g_ThreadKey, (void*)env );
jbyteArray pBuf = NewByteArray( env, pData, nDataLen );
int nRet = env->CallIntMethod( g_HIDDeviceManagerCallbackHandler, g_midHIDDeviceManagerSendOutputReport, m_nId, pBuf );
ExceptionCheck( env, "SendOutputReport" );
env->DeleteLocalRef( pBuf );
return nRet;
}
int SendFeatureReport( const unsigned char *pData, size_t nDataLen )
{
// Make sure thread is attached to JVM/env
JNIEnv *env;
g_JVM->AttachCurrentThread( &env, NULL );
pthread_setspecific( g_ThreadKey, (void*)env );
jbyteArray pBuf = NewByteArray( env, pData, nDataLen );
int nRet = env->CallIntMethod( g_HIDDeviceManagerCallbackHandler, g_midHIDDeviceManagerSendFeatureReport, m_nId, pBuf );
ExceptionCheck( env, "SendFeatureReport" );
env->DeleteLocalRef( pBuf );
return nRet;
}
void ProcessFeatureReport( const uint8_t *pBuf, size_t nBufSize )
{
hid_mutex_guard cvl( &m_cvLock );
if ( m_bIsWaitingForFeatureReport )
{
m_featureReport.assign( pBuf, nBufSize );
m_bIsWaitingForFeatureReport = false;
m_nFeatureReportError = 0;
pthread_cond_signal( &m_cv );
}
}
int GetFeatureReport( unsigned char *pData, size_t nDataLen )
{
// Make sure thread is attached to JVM/env
JNIEnv *env;
g_JVM->AttachCurrentThread( &env, NULL );
pthread_setspecific( g_ThreadKey, (void*)env );
{
hid_mutex_guard cvl( &m_cvLock );
if ( m_bIsWaitingForFeatureReport )
{
LOGV( "Get feature report already ongoing... bail" );
return -1; // Read already ongoing, we currently do not serialize, TODO
}
m_bIsWaitingForFeatureReport = true;
}
jbyteArray pBuf = NewByteArray( env, pData, nDataLen );
int nRet = env->CallBooleanMethod( g_HIDDeviceManagerCallbackHandler, g_midHIDDeviceManagerGetFeatureReport, m_nId, pBuf ) ? 0 : -1;
ExceptionCheck( env, "GetFeatureReport" );
env->DeleteLocalRef( pBuf );
if ( nRet < 0 )
{
LOGV( "GetFeatureReport failed" );
m_bIsWaitingForFeatureReport = false;
return -1;
}
{
hid_mutex_guard cvl( &m_cvLock );
if ( m_bIsWaitingForFeatureReport )
{
LOGV("=== Going to sleep" );
// Wait in CV until we are no longer waiting for a feature report.
const int FEATURE_REPORT_TIMEOUT_SECONDS = 2;
struct timespec ts, endtime;
clock_gettime( CLOCK_REALTIME, &ts );
endtime = ts;
endtime.tv_sec += FEATURE_REPORT_TIMEOUT_SECONDS;
do
{
if ( pthread_cond_timedwait( &m_cv, &m_cvLock, &endtime ) != 0 )
{
break;
}
}
while ( m_bIsWaitingForFeatureReport && get_timespec_ms( ts ) < get_timespec_ms( endtime ) );
// We are back
if ( m_bIsWaitingForFeatureReport )
{
m_nFeatureReportError = -ETIMEDOUT;
m_bIsWaitingForFeatureReport = false;
}
LOGV( "=== Got feature report err=%d", m_nFeatureReportError );
if ( m_nFeatureReportError != 0 )
{
return m_nFeatureReportError;
}
}
size_t uBytesToCopy = m_featureReport.size() > nDataLen ? nDataLen : m_featureReport.size();
memcpy( pData, m_featureReport.data(), uBytesToCopy );
m_featureReport.clear();
LOGV( "=== Got %u bytes", uBytesToCopy );
return uBytesToCopy;
}
}
void Close( bool bDeleteDevice )
{
// Make sure thread is attached to JVM/env
JNIEnv *env;
g_JVM->AttachCurrentThread( &env, NULL );
pthread_setspecific( g_ThreadKey, (void*)env );
env->CallVoidMethod( g_HIDDeviceManagerCallbackHandler, g_midHIDDeviceManagerClose, m_nId );
ExceptionCheck( env, "Close" );
hid_mutex_guard dataLock( &m_dataLock );
m_vecData.clear();
// Clean and release pending feature report reads
hid_mutex_guard cvLock( &m_cvLock );
m_featureReport.clear();
m_bIsWaitingForFeatureReport = false;
m_nFeatureReportError = -ECONNRESET;
pthread_cond_broadcast( &m_cv );
if ( bDeleteDevice )
{
delete m_pDevice;
m_pDevice = nullptr;
}
}
private:
pthread_mutex_t m_refCountLock = PTHREAD_MUTEX_INITIALIZER;
int m_nRefCount = 0;
int m_nId = 0;
hid_device_info *m_pInfo = nullptr;
hid_device *m_pDevice = nullptr;
bool m_bIsBLESteamController = false;
pthread_mutex_t m_dataLock = PTHREAD_MUTEX_INITIALIZER; // This lock has to be held to access m_vecData
hid_buffer_pool m_vecData;
// For handling get_feature_report
pthread_mutex_t m_cvLock = PTHREAD_MUTEX_INITIALIZER; // This lock has to be held to access any variables below
pthread_cond_t m_cv = PTHREAD_COND_INITIALIZER;
bool m_bIsWaitingForOpen = false;
bool m_bOpenResult = false;
bool m_bIsWaitingForFeatureReport = false;
int m_nFeatureReportError = 0;
hid_buffer m_featureReport;
public:
hid_device_ref<CHIDDevice> next;
};
class CHIDDevice;
static pthread_mutex_t g_DevicesMutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t g_DevicesRefCountMutex = PTHREAD_MUTEX_INITIALIZER;
static hid_device_ref<CHIDDevice> g_Devices;
static hid_device_ref<CHIDDevice> FindDevice( int nDeviceId )
{
hid_device_ref<CHIDDevice> pDevice;
hid_mutex_guard l( &g_DevicesMutex );
for ( pDevice = g_Devices; pDevice; pDevice = pDevice->next )
{
if ( pDevice->GetId() == nDeviceId )
{
break;
}
}
return pDevice;
}
static void ThreadDestroyed(void* value)
{
/* The thread is being destroyed, detach it from the Java VM and set the g_ThreadKey value to NULL as required */
JNIEnv *env = (JNIEnv*) value;
if (env != NULL) {
g_JVM->DetachCurrentThread();
pthread_setspecific(g_ThreadKey, NULL);
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceRegisterCallback)(JNIEnv *env, jobject thiz);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceReleaseCallback)(JNIEnv *env, jobject thiz);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceConnected)(JNIEnv *env, jobject thiz, int nDeviceID, jstring sIdentifier, int nVendorId, int nProductId, jstring sSerialNumber, int nReleaseNumber, jstring sManufacturer, jstring sProduct, int nInterface, int nInterfaceClass, int nInterfaceSubclass, int nInterfaceProtocol );
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenPending)(JNIEnv *env, jobject thiz, int nDeviceID);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenResult)(JNIEnv *env, jobject thiz, int nDeviceID, bool bOpened);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceDisconnected)(JNIEnv *env, jobject thiz, int nDeviceID);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceInputReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceFeatureReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value);
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceRegisterCallback)(JNIEnv *env, jobject thiz )
{
LOGV( "HIDDeviceRegisterCallback()");
env->GetJavaVM( &g_JVM );
/*
* Create mThreadKey so we can keep track of the JNIEnv assigned to each thread
* Refer to http://developer.android.com/guide/practices/design/jni.html for the rationale behind this
*/
if (pthread_key_create(&g_ThreadKey, ThreadDestroyed) != 0) {
__android_log_print(ANDROID_LOG_ERROR, TAG, "Error initializing pthread key");
}
if ( g_HIDDeviceManagerCallbackHandler != NULL )
{
env->DeleteGlobalRef( g_HIDDeviceManagerCallbackClass );
g_HIDDeviceManagerCallbackClass = NULL;
env->DeleteGlobalRef( g_HIDDeviceManagerCallbackHandler );
g_HIDDeviceManagerCallbackHandler = NULL;
}
g_HIDDeviceManagerCallbackHandler = env->NewGlobalRef( thiz );
jclass objClass = env->GetObjectClass( thiz );
if ( objClass )
{
g_HIDDeviceManagerCallbackClass = reinterpret_cast< jclass >( env->NewGlobalRef( objClass ) );
g_midHIDDeviceManagerOpen = env->GetMethodID( g_HIDDeviceManagerCallbackClass, "openDevice", "(I)Z" );
if ( !g_midHIDDeviceManagerOpen )
{
__android_log_print(ANDROID_LOG_ERROR, TAG, "HIDDeviceRegisterCallback: callback class missing openDevice" );
}
g_midHIDDeviceManagerSendOutputReport = env->GetMethodID( g_HIDDeviceManagerCallbackClass, "sendOutputReport", "(I[B)I" );
if ( !g_midHIDDeviceManagerSendOutputReport )
{
__android_log_print(ANDROID_LOG_ERROR, TAG, "HIDDeviceRegisterCallback: callback class missing sendOutputReport" );
}
g_midHIDDeviceManagerSendFeatureReport = env->GetMethodID( g_HIDDeviceManagerCallbackClass, "sendFeatureReport", "(I[B)I" );
if ( !g_midHIDDeviceManagerSendFeatureReport )
{
__android_log_print(ANDROID_LOG_ERROR, TAG, "HIDDeviceRegisterCallback: callback class missing sendFeatureReport" );
}
g_midHIDDeviceManagerGetFeatureReport = env->GetMethodID( g_HIDDeviceManagerCallbackClass, "getFeatureReport", "(I[B)Z" );
if ( !g_midHIDDeviceManagerGetFeatureReport )
{
__android_log_print(ANDROID_LOG_ERROR, TAG, "HIDDeviceRegisterCallback: callback class missing getFeatureReport" );
}
g_midHIDDeviceManagerClose = env->GetMethodID( g_HIDDeviceManagerCallbackClass, "closeDevice", "(I)V" );
if ( !g_midHIDDeviceManagerClose )
{
__android_log_print(ANDROID_LOG_ERROR, TAG, "HIDDeviceRegisterCallback: callback class missing closeDevice" );
}
env->DeleteLocalRef( objClass );
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceReleaseCallback)(JNIEnv *env, jobject thiz)
{
LOGV("HIDDeviceReleaseCallback");
if ( env->IsSameObject( thiz, g_HIDDeviceManagerCallbackHandler ) )
{
env->DeleteGlobalRef( g_HIDDeviceManagerCallbackClass );
g_HIDDeviceManagerCallbackClass = NULL;
env->DeleteGlobalRef( g_HIDDeviceManagerCallbackHandler );
g_HIDDeviceManagerCallbackHandler = NULL;
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceConnected)(JNIEnv *env, jobject thiz, int nDeviceID, jstring sIdentifier, int nVendorId, int nProductId, jstring sSerialNumber, int nReleaseNumber, jstring sManufacturer, jstring sProduct, int nInterface, int nInterfaceClass, int nInterfaceSubclass, int nInterfaceProtocol )
{
LOGV( "HIDDeviceConnected() id=%d VID/PID = %.4x/%.4x, interface %d\n", nDeviceID, nVendorId, nProductId, nInterface );
hid_device_info *pInfo = new hid_device_info;
memset( pInfo, 0, sizeof( *pInfo ) );
pInfo->path = CreateStringFromJString( env, sIdentifier );
pInfo->vendor_id = nVendorId;
pInfo->product_id = nProductId;
pInfo->serial_number = CreateWStringFromJString( env, sSerialNumber );
pInfo->release_number = nReleaseNumber;
pInfo->manufacturer_string = CreateWStringFromJString( env, sManufacturer );
pInfo->product_string = CreateWStringFromJString( env, sProduct );
pInfo->interface_number = nInterface;
pInfo->interface_class = nInterfaceClass;
pInfo->interface_subclass = nInterfaceSubclass;
pInfo->interface_protocol = nInterfaceProtocol;
hid_device_ref<CHIDDevice> pDevice( new CHIDDevice( nDeviceID, pInfo ) );
hid_mutex_guard l( &g_DevicesMutex );
hid_device_ref<CHIDDevice> pLast, pCurr;
for ( pCurr = g_Devices; pCurr; pLast = pCurr, pCurr = pCurr->next )
{
continue;
}
if ( pLast )
{
pLast->next = pDevice;
}
else
{
g_Devices = pDevice;
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenPending)(JNIEnv *env, jobject thiz, int nDeviceID)
{
LOGV( "HIDDeviceOpenPending() id=%d\n", nDeviceID );
hid_device_ref<CHIDDevice> pDevice = FindDevice( nDeviceID );
if ( pDevice )
{
pDevice->SetOpenPending();
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenResult)(JNIEnv *env, jobject thiz, int nDeviceID, bool bOpened)
{
LOGV( "HIDDeviceOpenResult() id=%d, result=%s\n", nDeviceID, bOpened ? "true" : "false" );
hid_device_ref<CHIDDevice> pDevice = FindDevice( nDeviceID );
if ( pDevice )
{
pDevice->SetOpenResult( bOpened );
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceDisconnected)(JNIEnv *env, jobject thiz, int nDeviceID)
{
LOGV( "HIDDeviceDisconnected() id=%d\n", nDeviceID );
hid_device_ref<CHIDDevice> pDevice;
{
hid_mutex_guard l( &g_DevicesMutex );
hid_device_ref<CHIDDevice> pLast, pCurr;
for ( pCurr = g_Devices; pCurr; pLast = pCurr, pCurr = pCurr->next )
{
if ( pCurr->GetId() == nDeviceID )
{
pDevice = pCurr;
if ( pLast )
{
pLast->next = pCurr->next;
}
else
{
g_Devices = pCurr->next;
}
}
}
}
if ( pDevice )
{
pDevice->Close( false );
}
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceInputReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value)
{
jbyte *pBuf = env->GetByteArrayElements(value, NULL);
jsize nBufSize = env->GetArrayLength(value);
// LOGV( "HIDDeviceInput() id=%d len=%u\n", nDeviceID, nBufSize );
hid_device_ref<CHIDDevice> pDevice = FindDevice( nDeviceID );
if ( pDevice )
{
pDevice->ProcessInput( reinterpret_cast< const uint8_t* >( pBuf ), nBufSize );
}
env->ReleaseByteArrayElements(value, pBuf, 0);
}
extern "C"
JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceFeatureReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value)
{
jbyte *pBuf = env->GetByteArrayElements(value, NULL);
jsize nBufSize = env->GetArrayLength(value);
LOGV( "HIDDeviceFeatureReport() id=%d len=%u\n", nDeviceID, nBufSize );
hid_device_ref<CHIDDevice> pDevice = FindDevice( nDeviceID );
if ( pDevice )
{
pDevice->ProcessFeatureReport( reinterpret_cast< const uint8_t* >( pBuf ), nBufSize );
}
env->ReleaseByteArrayElements(value, pBuf, 0);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
extern "C"
{
int hid_init(void)
{
return 0;
}
struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
struct hid_device_info *root = NULL;
hid_mutex_guard l( &g_DevicesMutex );
for ( hid_device_ref<CHIDDevice> pDevice = g_Devices; pDevice; pDevice = pDevice->next )
{
const hid_device_info *info = pDevice->GetDeviceInfo();
if ( ( vendor_id == 0 && product_id == 0 ) ||
( vendor_id == info->vendor_id && product_id == info->product_id ) )
{
hid_device_info *dev = CopyHIDDeviceInfo( info );
dev->next = root;
root = dev;
}
}
return root;
}
void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs)
{
while ( devs )
{
struct hid_device_info *next = devs->next;
FreeHIDDeviceInfo( devs );
devs = next;
}
}
HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
{
// TODO: Implement
return NULL;
}
HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path, int bExclusive)
{
LOGV( "hid_open_path( %s )", path );
hid_device_ref< CHIDDevice > pDevice;
{
hid_mutex_guard r( &g_DevicesRefCountMutex );
hid_mutex_guard l( &g_DevicesMutex );
for ( hid_device_ref<CHIDDevice> pCurr = g_Devices; pCurr; pCurr = pCurr->next )
{
if ( strcmp( pCurr->GetDeviceInfo()->path, path ) == 0 )
{
hid_device *pValue = pCurr->GetDevice();
if ( pValue )
{
++pValue->m_nDeviceRefCount;
LOGD("Incrementing device %d (%p), refCount = %d\n", pValue->m_nId, pValue, pValue->m_nDeviceRefCount);
return pValue;
}
// Hold a shared pointer to the controller for the duration
pDevice = pCurr;
break;
}
}
}
if ( pDevice && pDevice->BOpen() )
{
return pDevice->GetDevice();
}
return NULL;
}
int HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length)
{
if ( device )
{
LOGV( "hid_write id=%d length=%u", device->m_nId, length );
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
return pDevice->SendOutputReport( data, length );
}
}
return -1; // Controller was disconnected
}
// TODO: Implement timeout?
int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *device, unsigned char *data, size_t length, int milliseconds)
{
if ( device )
{
// LOGV( "hid_read_timeout id=%d length=%u timeout=%d", device->m_nId, length, milliseconds );
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
return pDevice->GetInput( data, length );
}
LOGV( "controller was disconnected" );
}
return -1; // Controller was disconnected
}
// TODO: Implement blocking
int HID_API_EXPORT HID_API_CALL hid_read(hid_device *device, unsigned char *data, size_t length)
{
LOGV( "hid_read id=%d length=%u", device->m_nId, length );
return hid_read_timeout( device, data, length, 0 );
}
// TODO: Implement?
int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *device, int nonblock)
{
return -1;
}
int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *device, const unsigned char *data, size_t length)
{
if ( device )
{
LOGV( "hid_send_feature_report id=%d length=%u", device->m_nId, length );
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
return pDevice->SendFeatureReport( data, length );
}
}
return -1; // Controller was disconnected
}
// Synchronous operation. Will block until completed.
int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *device, unsigned char *data, size_t length)
{
if ( device )
{
LOGV( "hid_get_feature_report id=%d length=%u", device->m_nId, length );
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
return pDevice->GetFeatureReport( data, length );
}
}
return -1; // Controller was disconnected
}
void HID_API_EXPORT HID_API_CALL hid_close(hid_device *device)
{
if ( device )
{
LOGV( "hid_close id=%d", device->m_nId );
hid_mutex_guard r( &g_DevicesRefCountMutex );
LOGD("Decrementing device %d (%p), refCount = %d\n", device->m_nId, device, device->m_nDeviceRefCount - 1);
if ( --device->m_nDeviceRefCount == 0 )
{
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
pDevice->Close( true );
}
else
{
delete device;
}
LOGD("Deleted device %p\n", device);
}
}
}
int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *device, wchar_t *string, size_t maxlen)
{
if ( device )
{
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
wcsncpy( string, pDevice->GetDeviceInfo()->manufacturer_string, maxlen );
return 0;
}
}
return -1;
}
int HID_API_EXPORT_CALL hid_get_product_string(hid_device *device, wchar_t *string, size_t maxlen)
{
if ( device )
{
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
wcsncpy( string, pDevice->GetDeviceInfo()->product_string, maxlen );
return 0;
}
}
return -1;
}
int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *device, wchar_t *string, size_t maxlen)
{
if ( device )
{
hid_device_ref<CHIDDevice> pDevice = FindDevice( device->m_nId );
if ( pDevice )
{
wcsncpy( string, pDevice->GetDeviceInfo()->serial_number, maxlen );
return 0;
}
}
return -1;
}
int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *device, int string_index, wchar_t *string, size_t maxlen)
{
return -1;
}
HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device)
{
return NULL;
}
int hid_exit(void)
{
return 0;
}
}