--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2009,2010 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio.
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define DO_DEBUG 0
+
+#include <usb.h>
+#include "fusb.h"
+#include "fusb_darwin.h"
+#include "darwin_libusb.h"
+#include <iostream>
+
+static const int USB_TIMEOUT = 100; // in milliseconds
+static const UInt8 NUM_QUEUE_ITEMS = 20;
+
+fusb_devhandle_darwin::fusb_devhandle_darwin (usb_dev_handle* udh)
+ : fusb_devhandle (udh)
+{
+ // that's it
+}
+
+fusb_devhandle_darwin::~fusb_devhandle_darwin ()
+{
+ // nop
+}
+
+fusb_ephandle*
+fusb_devhandle_darwin::make_ephandle (int endpoint, bool input_p,
+ int block_size, int nblocks)
+{
+ return new fusb_ephandle_darwin (this, endpoint, input_p,
+ block_size, nblocks);
+}
+
+// ----------------------------------------------------------------
+
+fusb_ephandle_darwin::fusb_ephandle_darwin (fusb_devhandle_darwin* dh,
+ int endpoint, bool input_p,
+ int block_size, int nblocks)
+ : fusb_ephandle (endpoint, input_p, block_size, nblocks),
+ d_devhandle (dh), d_pipeRef (0), d_transferType (0),
+ d_interfaceRef (0), d_interface (0), d_queue (0),
+ d_buffer (0), d_bufLenBytes (0)
+{
+ d_bufLenBytes = fusb_sysconfig::max_block_size();
+
+// create circular buffer
+ d_buffer = new circular_buffer<char> (NUM_QUEUE_ITEMS * d_bufLenBytes,
+ !d_input_p, d_input_p);
+
+// create the queue
+ d_queue = new circular_linked_list <s_buffer_ptr> (NUM_QUEUE_ITEMS);
+ d_queue->iterate_start ();
+ s_node_ptr l_node = d_queue->iterate_next ();
+ while (l_node) {
+ l_node->both (new s_both<s_buffer_ptr> (l_node, this));
+ s_buffer_ptr l_buf = new s_buffer (d_bufLenBytes);
+ l_node->object (l_buf);
+ l_node = d_queue->iterate_next ();
+ l_buf = NULL;
+ }
+
+ d_readRunning = new gruel::mutex ();
+ d_runThreadRunning = new gruel::mutex ();
+ d_runBlock = new gruel::condition_variable ();
+ d_readBlock = new gruel::condition_variable ();
+ d_runBlock_mutex = new gruel::mutex ();
+ d_readBlock_mutex = new gruel::mutex ();
+}
+
+fusb_ephandle_darwin::~fusb_ephandle_darwin ()
+{
+ stop ();
+
+ d_queue->iterate_start ();
+ s_node_ptr l_node = d_queue->iterate_next ();
+ while (l_node) {
+ s_both_ptr l_both = l_node->both ();
+ delete l_both;
+ l_both = NULL;
+ l_node->both (NULL);
+ s_buffer_ptr l_buf = l_node->object ();
+ delete l_buf;
+ l_buf = NULL;
+ l_node->object (NULL);
+ l_node = d_queue->iterate_next ();
+ }
+ delete d_queue;
+ d_queue = NULL;
+ delete d_buffer;
+ d_buffer = NULL;
+ delete d_readRunning;
+ d_readRunning = NULL;
+ delete d_runThreadRunning;
+ d_runThreadRunning = NULL;
+ delete d_runBlock_mutex;
+ d_runBlock_mutex = NULL;
+ delete d_readBlock_mutex;
+ d_readBlock_mutex = NULL;
+ delete d_runBlock;
+ d_runBlock = NULL;
+ delete d_readBlock;
+ d_readBlock = NULL;
+}
+
+bool
+fusb_ephandle_darwin::start ()
+{
+ UInt8 direction, number, interval;
+ UInt16 maxPacketSize;
+
+// reset circular buffer
+ d_buffer->reset ();
+
+// reset the queue
+ d_queue->num_used (0);
+ d_queue->iterate_start ();
+ s_node_ptr l_node = d_queue->iterate_next ();
+ while (l_node) {
+ l_node->both()->set (l_node, this);
+ l_node->object()->reset ();
+ l_node->set_available ();
+ l_node = d_queue->iterate_next ();
+ }
+
+ d_pipeRef = d_transferType = 0;
+
+ usb_dev_handle* dev = d_devhandle->get_usb_dev_handle ();
+ if (! dev)
+ USB_ERROR_STR (false, -ENXIO, "fusb_ephandle_darwin::start: "
+ "null device");
+
+ darwin_dev_handle* device = (darwin_dev_handle*) dev->impl_info;
+ if (! device)
+ USB_ERROR_STR (false, -ENOENT, "fusb_ephandle_darwin::start: "
+ "device not initialized");
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::start: dev = " <<
+ (void*) dev << ", device = " << (void*) device << std::endl;
+ }
+
+ d_interfaceRef = device->interface;
+ if (! d_interfaceRef)
+ USB_ERROR_STR (false, -EACCES, "fusb_ephandle_darwin::start: "
+ "interface used without being claimed");
+ d_interface = *d_interfaceRef;
+
+// get read or write pipe info (depends on "d_input_p")
+
+ if (usb_debug > 3) {
+ std::cerr << "fusb_ephandle_darwin::start d_endpoint = " << d_endpoint
+ << ", d_input_p = " << (d_input_p ? "TRUE" : "FALSE") << std::endl;
+ }
+
+ int l_endpoint = (d_input_p ? USB_ENDPOINT_IN : USB_ENDPOINT_OUT);
+ int pipeRef = ep_to_pipeRef (device, d_endpoint | l_endpoint);
+ if (pipeRef < 0)
+ USB_ERROR_STR (false, -EINVAL, "fusb_ephandle_darwin::start "
+ " invalid pipeRef.\n");
+
+ d_pipeRef = pipeRef;
+ d_interface->GetPipeProperties (d_interfaceRef,
+ d_pipeRef,
+ &direction,
+ &number,
+ &d_transferType,
+ &maxPacketSize,
+ &interval);
+ if (usb_debug == 3) {
+ std::cerr << "fusb_ephandle_darwin::start: " << (d_input_p ? "read" : "write")
+ << ": ep = " << d_endpoint << ", pipeRef = " << d_pipeRef << "interface = "
+ << d_interface << ", interfaceRef = " << d_interfaceRef
+ << ", if_direction = " << direction << ", if_# = " << number
+ << ", if_interval = " << interval << ", if_maxPacketSize = "
+ << maxPacketSize << std::endl;
+ }
+
+ // set global start boolean
+ d_started = true;
+
+ // lock the runBlock mutex, before creating the run thread.
+ // this guarantees that we can control execution between these 2 threads
+ gruel::scoped_lock l (*d_runBlock_mutex);
+
+ // create the run thread, which allows OSX to process I/O separately
+ d_runThread = new gruel::thread (run_thread, this);
+
+ // wait until the run thread (and possibky read thread) are -really-
+ // going; this will unlock the mutex before waiting for a signal ()
+ d_runBlock->wait (l);
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::start: " << (d_input_p ? "read" : "write")
+ << " started." << std::endl;
+ }
+
+ return (true);
+}
+
+void
+fusb_ephandle_darwin::run_thread (void* arg)
+{
+ fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(arg);
+
+ // lock the run thread running mutex; if ::stop() is called, it will
+ // first abort() the pipe then wait for the run thread to finish,
+ // via a lock() on this mutex
+ gruel::mutex* l_runThreadRunning = This->d_runThreadRunning;
+ gruel::scoped_lock l0 (*l_runThreadRunning);
+
+ gruel::mutex* l_readRunning = This->d_readRunning;
+ gruel::condition_variable* l_readBlock = This->d_readBlock;
+ gruel::mutex* l_readBlock_mutex = This->d_readBlock_mutex;
+
+ bool l_input_p = This->d_input_p;
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::run_thread: starting for "
+ << (l_input_p ? "read" : "write") << "." << std::endl;
+ }
+
+ usb_interface_t** l_interfaceRef = This->d_interfaceRef;
+ usb_interface_t* l_interface = This->d_interface;
+ CFRunLoopSourceRef l_cfSource;
+
+// create async run loop
+ l_interface->CreateInterfaceAsyncEventSource (l_interfaceRef, &l_cfSource);
+ CFRunLoopAddSource (CFRunLoopGetCurrent (), l_cfSource,
+ kCFRunLoopDefaultMode);
+// get run loop reference, to allow other threads to stop
+ This->d_CFRunLoopRef = CFRunLoopGetCurrent ();
+
+ gruel::thread* l_rwThread = NULL;
+
+ if (l_input_p) {
+ // lock the readBlock mutex, before creating the read thread.
+ // this guarantees that we can control execution between these 2 threads
+ gruel::scoped_lock l1 (*l_readBlock_mutex);
+ // create the read thread, which just issues all of the starting
+ // async read commands, then returns
+ l_rwThread = new gruel::thread (read_thread, arg);
+ // wait until the the read thread is -really- going; this will
+ // unlock the read block mutex before waiting for a signal ()
+ l_readBlock->wait (l1);
+ }
+
+ {
+ // now signal the run condition to release and finish ::start().
+
+ // lock the runBlock mutex first; this will force waiting until the
+ // ->wait() command is issued in ::start()
+ gruel::mutex* l_run_block_mutex = This->d_runBlock_mutex;
+ gruel::scoped_lock l2 (*l_run_block_mutex);
+
+ // now that the lock is in place, signal the parent thread that
+ // things are running
+ This->d_runBlock->notify_one ();
+ }
+
+ // run the loop
+ CFRunLoopRun ();
+
+ if (l_input_p) {
+ // wait for read_thread () to finish, if needed
+ gruel::scoped_lock l3 (*l_readRunning);
+ }
+
+ // remove run loop stuff
+ CFRunLoopRemoveSource (CFRunLoopGetCurrent (),
+ l_cfSource, kCFRunLoopDefaultMode);
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::run_thread: finished for "
+ << (l_input_p ? "read" : "write") << "." << std::endl;
+ }
+}
+
+void
+fusb_ephandle_darwin::read_thread (void* arg)
+{
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::read_thread: starting." << std::endl;
+ }
+
+ fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(arg);
+
+ // before doing anything else, lock the read running mutex. this
+ // mutex does flow control between this thread and the run_thread
+ gruel::mutex* l_readRunning = This->d_readRunning;
+ gruel::scoped_lock l0 (*l_readRunning);
+
+ // signal the read condition from run_thread() to continue
+
+ // lock the readBlock mutex first; this will force waiting until the
+ // ->wait() command is issued in ::run_thread()
+ gruel::condition_variable* l_readBlock = This->d_readBlock;
+ gruel::mutex* l_read_block_mutex = This->d_readBlock_mutex;
+
+ {
+ gruel::scoped_lock l1 (*l_read_block_mutex);
+
+ // now that the lock is in place, signal the parent thread that
+ // things are running here
+ l_readBlock->notify_one ();
+ }
+
+ // queue up all of the available read requests
+ s_queue_ptr l_queue = This->d_queue;
+ l_queue->iterate_start ();
+ s_node_ptr l_node = l_queue->iterate_next ();
+ while (l_node) {
+ This->read_issue (l_node->both ());
+ l_node = l_queue->iterate_next ();
+ }
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::read_thread: finished." << std::endl;
+ }
+}
+
+void
+fusb_ephandle_darwin::read_issue (s_both_ptr l_both)
+{
+ if ((! l_both) || (! d_started)) {
+ if (usb_debug > 4) {
+ std::cerr << "fusb_ephandle_darwin::read_issue: Doing nothing; "
+ << "l_both is " << (void*) l_both << "; started is "
+ << (d_started ? "TRUE" : "FALSE") << std::endl;
+ }
+ return;
+ }
+
+// set the node and buffer from the input "both"
+ s_node_ptr l_node = l_both->node ();
+ s_buffer_ptr l_buf = l_node->object ();
+ void* v_buffer = (void*) l_buf->buffer ();
+
+// read up to d_bufLenBytes
+ size_t bufLen = d_bufLenBytes;
+ l_buf->n_used (bufLen);
+
+// setup system call result
+ io_return_t result = kIOReturnSuccess;
+
+ if (d_transferType == kUSBInterrupt)
+/* This is an interrupt pipe. We can't specify a timeout. */
+ result = d_interface->ReadPipeAsync
+ (d_interfaceRef, d_pipeRef, v_buffer, bufLen,
+ (IOAsyncCallback1) read_completed, (void*) l_both);
+ else
+ result = d_interface->ReadPipeAsyncTO
+ (d_interfaceRef, d_pipeRef, v_buffer, bufLen, 0, USB_TIMEOUT,
+ (IOAsyncCallback1) read_completed, (void*) l_both);
+
+ if (result != kIOReturnSuccess)
+ USB_ERROR_STR_NO_RET (- darwin_to_errno (result),
+ "fusb_ephandle_darwin::read_issue "
+ "(ReadPipeAsync%s): %s",
+ d_transferType == kUSBInterrupt ? "" : "TO",
+ darwin_error_str (result));
+ else if (usb_debug > 4) {
+ std::cerr << "fusb_ephandle_darwin::read_issue: Queued " << (void*) l_both
+ << " (" << bufLen << " Bytes)" << std::endl;
+ }
+}
+
+void
+fusb_ephandle_darwin::read_completed (void* refCon,
+ io_return_t result,
+ void* io_size)
+{
+ size_t l_size = (size_t) io_size;
+ s_both_ptr l_both = static_cast<s_both_ptr>(refCon);
+ fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(l_both->This ());
+ s_node_ptr l_node = l_both->node ();
+ circular_buffer<char>* l_buffer = This->d_buffer;
+ s_buffer_ptr l_buf = l_node->object ();
+ size_t l_i_size = l_buf->n_used ();
+
+ if (This->d_started && (l_i_size != l_size)) {
+ std::cerr << "fusb_ephandle_darwin::read_completed: Expected " << l_i_size
+ << " bytes; read " << l_size << "." << std::endl;
+ } else if (usb_debug > 4) {
+ std::cerr << "fusb_ephandle_darwin::read_completed: Read " << (void*) l_both
+ << " (" << l_size << " bytes)" << std::endl;
+ }
+
+// add this read to the transfer buffer, and check for overflow
+// -> data is being enqueued faster than it can be dequeued
+ if (l_buffer->enqueue (l_buf->buffer (), l_size) == -1) {
+// print out that there's an overflow
+ fputs ("uO", stderr);
+ fflush (stderr);
+ }
+
+// set buffer's # data to 0
+ l_buf->n_used (0);
+
+// issue another read for this "both"
+ This->read_issue (l_both);
+}
+
+int
+fusb_ephandle_darwin::read (void* buffer, int nbytes)
+{
+ size_t l_nbytes = (size_t) nbytes;
+ d_buffer->dequeue ((char*) buffer, &l_nbytes);
+
+ if (usb_debug > 4) {
+ std::cerr << "fusb_ephandle_darwin::read: request for " << nbytes
+ << " bytes, " << l_nbytes << " bytes retrieved." << std::endl;
+ }
+
+ return ((int) l_nbytes);
+}
+
+int
+fusb_ephandle_darwin::write (const void* buffer, int nbytes)
+{
+ size_t l_nbytes = (size_t) nbytes;
+
+ if (! d_started) {
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::write: Not yet started." << std::endl;
+ }
+ return (0);
+ }
+
+ while (l_nbytes != 0) {
+// find out how much data to copy; limited to "d_bufLenBytes" per node
+ size_t t_nbytes = (l_nbytes > d_bufLenBytes) ? d_bufLenBytes : l_nbytes;
+
+// get next available node to write into;
+// blocks internally if none available
+ s_node_ptr l_node = d_queue->find_next_available_node ();
+
+// copy the input into the node's buffer
+ s_buffer_ptr l_buf = l_node->object ();
+ l_buf->buffer ((char*) buffer, t_nbytes);
+ void* v_buffer = (void*) l_buf->buffer ();
+
+// setup callback parameter & system call return
+ s_both_ptr l_both = l_node->both ();
+ io_return_t result = kIOReturnSuccess;
+
+ if (d_transferType == kUSBInterrupt)
+/* This is an interrupt pipe ... can't specify a timeout. */
+ result = d_interface->WritePipeAsync
+ (d_interfaceRef, d_pipeRef, v_buffer, t_nbytes,
+ (IOAsyncCallback1) write_completed, (void*) l_both);
+ else
+ result = d_interface->WritePipeAsyncTO
+ (d_interfaceRef, d_pipeRef, v_buffer, t_nbytes, 0, USB_TIMEOUT,
+ (IOAsyncCallback1) write_completed, (void*) l_both);
+
+ if (result != kIOReturnSuccess)
+ USB_ERROR_STR (-1, - darwin_to_errno (result),
+ "fusb_ephandle_darwin::write_thread "
+ "(WritePipeAsync%s): %s",
+ d_transferType == kUSBInterrupt ? "" : "TO",
+ darwin_error_str (result));
+ else if (usb_debug > 4) {
+ std::cerr << "fusb_ephandle_darwin::write_thread: Queued " << (void*) l_both
+ << " (" << t_nbytes << " Bytes)" << std::endl;
+ }
+ l_nbytes -= t_nbytes;
+ }
+
+ return (nbytes);
+}
+
+void
+fusb_ephandle_darwin::write_completed (void* refCon,
+ io_return_t result,
+ void* io_size)
+{
+ s_both_ptr l_both = static_cast<s_both_ptr>(refCon);
+ fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(l_both->This ());
+ size_t l_size = (size_t) io_size;
+ s_node_ptr l_node = l_both->node ();
+ s_queue_ptr l_queue = This->d_queue;
+ s_buffer_ptr l_buf = l_node->object ();
+ size_t l_i_size = l_buf->n_used ();
+
+ if (This->d_started && (l_i_size != l_size)) {
+ std::cerr << "fusb_ephandle_darwin::write_completed: Expected " << l_i_size
+ << " bytes written; wrote " << l_size << "." << std::endl;
+ } else if (usb_debug > 4) {
+ std::cerr << "fusb_ephandle_darwin::write_completed: Wrote " << (void*) l_both
+ << " (" << l_size << " Bytes)" << std::endl;
+ }
+
+// set buffer's # data to 0
+ l_buf->n_used (0);
+// make the node available for reuse
+ l_queue->make_node_available (l_node);
+}
+
+void
+fusb_ephandle_darwin::abort ()
+{
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::abort: starting." << std::endl;
+ }
+
+ io_return_t result = d_interface->AbortPipe (d_interfaceRef, d_pipeRef);
+
+ if (result != kIOReturnSuccess)
+ USB_ERROR_STR_NO_RET (- darwin_to_errno (result),
+ "fusb_ephandle_darwin::abort "
+ "(AbortPipe): %s", darwin_error_str (result));
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::abort: finished." << std::endl;
+ }
+}
+
+bool
+fusb_ephandle_darwin::stop ()
+{
+ if (! d_started)
+ return (true);
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::stop: stopping "
+ << (d_input_p ? "read" : "write") << "." << std::endl;
+ }
+
+ d_started = false;
+
+// abort any pending IO transfers
+ abort ();
+
+// wait for write transfer to finish
+ wait_for_completion ();
+
+// tell IO buffer to abort any waiting conditions
+ d_buffer->abort ();
+
+// stop the run loop
+ CFRunLoopStop (d_CFRunLoopRef);
+
+// wait for the runThread to stop
+ gruel::scoped_lock l (*d_runThreadRunning);
+
+ if (usb_debug) {
+ std::cerr << "fusb_ephandle_darwin::stop: " << (d_input_p ? "read" : "write")
+ << " stopped." << std::endl;
+ }
+
+ return (true);
+}
+
+void
+fusb_ephandle_darwin::wait_for_completion ()
+{
+ if (d_queue)
+ while (d_queue->in_use ())
+ usleep (1000);
+}
projects / debian / gnuradio / blobdiff