diff options
Diffstat (limited to 'libs/backends/wavesaudio/portmidi/src/pm_mac/pmmacosxcm.c')
| -rw-r--r-- | libs/backends/wavesaudio/portmidi/src/pm_mac/pmmacosxcm.c | 1021 |
1 files changed, 0 insertions, 1021 deletions
diff --git a/libs/backends/wavesaudio/portmidi/src/pm_mac/pmmacosxcm.c b/libs/backends/wavesaudio/portmidi/src/pm_mac/pmmacosxcm.c deleted file mode 100644 index 6432d2b55d..0000000000 --- a/libs/backends/wavesaudio/portmidi/src/pm_mac/pmmacosxcm.c +++ /dev/null @@ -1,1021 +0,0 @@ -/* - * Platform interface to the MacOS X CoreMIDI framework - * - * Jon Parise <jparise at cmu.edu> - * and subsequent work by Andrew Zeldis and Zico Kolter - * and Roger B. Dannenberg - * - * $Id: pmmacosx.c,v 1.17 2002/01/27 02:40:40 jon Exp $ - */ - -/* Notes: - since the input and output streams are represented by MIDIEndpointRef - values and almost no other state, we store the MIDIEndpointRef on - descriptors[midi->device_id].descriptor. The only other state we need - is for errors: we need to know if there is an error and if so, what is - the error text. We use a structure with two kinds of - host error: "error" and "callback_error". That way, asynchronous callbacks - do not interfere with other error information. - - OS X does not seem to have an error-code-to-text function, so we will - just use text messages instead of error codes. - */ - -#include <stdlib.h> - -//#define CM_DEBUG 1 - -#include "portmidi.h" -#include "pmutil.h" -#include "pminternal.h" -#include "porttime.h" -#include "pmmac.h" -#include "pmmacosxcm.h" - -#include <stdio.h> -#include <string.h> - -#include <CoreServices/CoreServices.h> -#include <CoreMIDI/MIDIServices.h> -#include <CoreAudio/HostTime.h> -#include <unistd.h> - -#define PACKET_BUFFER_SIZE 1024 -/* maximum overall data rate (OS X limit is 15000 bytes/second) */ -#define MAX_BYTES_PER_S 14000 - -/* Apple reports that packets are dropped when the MIDI bytes/sec - exceeds 15000. This is computed by "tracking the number of MIDI - bytes scheduled into 1-second buckets over the last six seconds - and averaging these counts." - - This is apparently based on timestamps, not on real time, so - we have to avoid constructing packets that schedule high speed - output even if the actual writes are delayed (which was my first - solution). - - The LIMIT_RATE symbol, if defined, enables code to modify - timestamps as follows: - After each packet is formed, the next allowable timestamp is - computed as this_packet_time + this_packet_len * delay_per_byte - - This is the minimum timestamp allowed in the next packet. - - Note that this distorts accurate timestamps somewhat. - */ -#define LIMIT_RATE 1 - -#define SYSEX_BUFFER_SIZE 128 - -#define VERBOSE_ON 1 -#define VERBOSE if (VERBOSE_ON) - -#define MIDI_SYSEX 0xf0 -#define MIDI_EOX 0xf7 -#define MIDI_STATUS_MASK 0x80 - -// "Ref"s are pointers on 32-bit machines and ints on 64 bit machines -// NULL_REF is our representation of either 0 or NULL -#ifdef __LP64__ -#define NULL_REF 0 -#else -#define NULL_REF NULL -#endif - -static MIDIClientRef client = NULL_REF; /* Client handle to the MIDI server */ -static MIDIPortRef portIn = NULL_REF; /* Input port handle */ -static MIDIPortRef portOut = NULL_REF; /* Output port handle */ - -extern pm_fns_node pm_macosx_in_dictionary; -extern pm_fns_node pm_macosx_out_dictionary; - -typedef struct midi_macosxcm_struct { - PmTimestamp sync_time; /* when did we last determine delta? */ - UInt64 delta; /* difference between stream time and real time in ns */ - UInt64 last_time; /* last output time in host units*/ - int first_message; /* tells midi_write to sychronize timestamps */ - int sysex_mode; /* middle of sending sysex */ - uint32_t sysex_word; /* accumulate data when receiving sysex */ - uint32_t sysex_byte_count; /* count how many received */ - char error[PM_HOST_ERROR_MSG_LEN]; - char callback_error[PM_HOST_ERROR_MSG_LEN]; - Byte packetBuffer[PACKET_BUFFER_SIZE]; - MIDIPacketList *packetList; /* a pointer to packetBuffer */ - MIDIPacket *packet; - Byte sysex_buffer[SYSEX_BUFFER_SIZE]; /* temp storage for sysex data */ - MIDITimeStamp sysex_timestamp; /* timestamp to use with sysex data */ - /* allow for running status (is running status possible here? -rbd): -cpr */ - unsigned char last_command; - int32_t last_msg_length; - /* limit midi data rate (a CoreMidi requirement): */ - UInt64 min_next_time; /* when can the next send take place? */ - int byte_count; /* how many bytes in the next packet list? */ - Float64 us_per_host_tick; /* host clock frequency, units of min_next_time */ - UInt64 host_ticks_per_byte; /* host clock units per byte at maximum rate */ -} midi_macosxcm_node, *midi_macosxcm_type; - -/* private function declarations */ -MIDITimeStamp timestamp_pm_to_cm(PmTimestamp timestamp); -PmTimestamp timestamp_cm_to_pm(MIDITimeStamp timestamp); - -char* cm_get_full_endpoint_name(MIDIEndpointRef endpoint); - - -static int -midi_length(int32_t msg) -{ - int status, high, low; - static int high_lengths[] = { - 1, 1, 1, 1, 1, 1, 1, 1, /* 0x00 through 0x70 */ - 3, 3, 3, 3, 2, 2, 3, 1 /* 0x80 through 0xf0 */ - }; - static int low_lengths[] = { - 1, 2, 3, 2, 1, 1, 1, 1, /* 0xf0 through 0xf8 */ - 1, 1, 1, 1, 1, 1, 1, 1 /* 0xf9 through 0xff */ - }; - - status = msg & 0xFF; - high = status >> 4; - low = status & 15; - - return (high != 0xF) ? high_lengths[high] : low_lengths[low]; -} - -static PmTimestamp midi_synchronize(PmInternal *midi) -{ - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - UInt64 pm_stream_time_2 = - AudioConvertHostTimeToNanos(AudioGetCurrentHostTime()); - PmTimestamp real_time; - UInt64 pm_stream_time; - /* if latency is zero and this is an output, there is no - time reference and midi_synchronize should never be called */ - assert(midi->time_proc); - assert(!(midi->write_flag && midi->latency == 0)); - do { - /* read real_time between two reads of stream time */ - pm_stream_time = pm_stream_time_2; - real_time = (*midi->time_proc)(midi->time_info); - pm_stream_time_2 = AudioConvertHostTimeToNanos(AudioGetCurrentHostTime()); - /* repeat if more than 0.5 ms has elapsed */ - } while (pm_stream_time_2 > pm_stream_time + 500000); - m->delta = pm_stream_time - ((UInt64) real_time * (UInt64) 1000000); - m->sync_time = real_time; - return real_time; -} - - -static void -process_packet(MIDIPacket *packet, PmEvent *event, - PmInternal *midi, midi_macosxcm_type m) -{ - /* handle a packet of MIDI messages from CoreMIDI */ - /* there may be multiple short messages in one packet (!) */ - unsigned int remaining_length = packet->length; - unsigned char *cur_packet_data = packet->data; - while (remaining_length > 0) { - if (cur_packet_data[0] == MIDI_SYSEX || - /* are we in the middle of a sysex message? */ - (m->last_command == 0 && - !(cur_packet_data[0] & MIDI_STATUS_MASK))) { - m->last_command = 0; /* no running status */ - unsigned int amt = pm_read_bytes(midi, cur_packet_data, - remaining_length, - event->timestamp); - remaining_length -= amt; - cur_packet_data += amt; - } else if (cur_packet_data[0] == MIDI_EOX) { - /* this should never happen, because pm_read_bytes should - * get and read all EOX bytes*/ - midi->sysex_in_progress = FALSE; - m->last_command = 0; - } else if (cur_packet_data[0] & MIDI_STATUS_MASK) { - /* compute the length of the next (short) msg in packet */ - unsigned int cur_message_length = midi_length(cur_packet_data[0]); - if (cur_message_length > remaining_length) { -#ifdef DEBUG - printf("PortMidi debug msg: not enough data"); -#endif - /* since there's no more data, we're done */ - return; - } - m->last_msg_length = cur_message_length; - m->last_command = cur_packet_data[0]; - switch (cur_message_length) { - case 1: - event->message = Pm_Message(cur_packet_data[0], 0, 0); - break; - case 2: - event->message = Pm_Message(cur_packet_data[0], - cur_packet_data[1], 0); - break; - case 3: - event->message = Pm_Message(cur_packet_data[0], - cur_packet_data[1], - cur_packet_data[2]); - break; - default: - /* PortMIDI internal error; should never happen */ - assert(cur_message_length == 1); - return; /* give up on packet if continued after assert */ - } - pm_read_short(midi, event); - remaining_length -= m->last_msg_length; - cur_packet_data += m->last_msg_length; - } else if (m->last_msg_length > remaining_length + 1) { - /* we have running status, but not enough data */ -#ifdef DEBUG - printf("PortMidi debug msg: not enough data in CoreMIDI packet"); -#endif - /* since there's no more data, we're done */ - return; - } else { /* output message using running status */ - switch (m->last_msg_length) { - case 1: - event->message = Pm_Message(m->last_command, 0, 0); - break; - case 2: - event->message = Pm_Message(m->last_command, - cur_packet_data[0], 0); - break; - case 3: - event->message = Pm_Message(m->last_command, - cur_packet_data[0], - cur_packet_data[1]); - break; - default: - /* last_msg_length is invalid -- internal PortMIDI error */ - assert(m->last_msg_length == 1); - } - pm_read_short(midi, event); - remaining_length -= (m->last_msg_length - 1); - cur_packet_data += (m->last_msg_length - 1); - } - } -} - - - -/* called when MIDI packets are received */ -static void -readProc(const MIDIPacketList *newPackets, void *refCon, void *connRefCon) -{ - PmInternal *midi; - midi_macosxcm_type m; - PmEvent event; - MIDIPacket *packet; - unsigned int packetIndex; - uint32_t now; - unsigned int status; - -#ifdef CM_DEBUG - printf("readProc: numPackets %d: ", newPackets->numPackets); -#endif - - /* Retrieve the context for this connection */ - midi = (PmInternal *) connRefCon; - m = (midi_macosxcm_type) midi->descriptor; - assert(m); - - /* synchronize time references every 100ms */ - now = (*midi->time_proc)(midi->time_info); - if (m->first_message || m->sync_time + 100 /*ms*/ < now) { - /* time to resync */ - now = midi_synchronize(midi); - m->first_message = FALSE; - } - - packet = (MIDIPacket *) &newPackets->packet[0]; - /* printf("readproc packet status %x length %d\n", packet->data[0], - packet->length); */ - for (packetIndex = 0; packetIndex < newPackets->numPackets; packetIndex++) { - /* Set the timestamp and dispatch this message */ - event.timestamp = (PmTimestamp) /* explicit conversion */ ( - (AudioConvertHostTimeToNanos(packet->timeStamp) - m->delta) / - (UInt64) 1000000); - status = packet->data[0]; - /* process packet as sysex data if it begins with MIDI_SYSEX, or - MIDI_EOX or non-status byte with no running status */ -#ifdef CM_DEBUG - printf(" %d", packet->length); -#endif - if (status == MIDI_SYSEX || status == MIDI_EOX || - ((!(status & MIDI_STATUS_MASK)) && !m->last_command)) { - /* previously was: !(status & MIDI_STATUS_MASK)) { - * but this could mistake running status for sysex data - */ - /* reset running status data -cpr */ - m->last_command = 0; - m->last_msg_length = 0; - /* printf("sysex packet length: %d\n", packet->length); */ - pm_read_bytes(midi, packet->data, packet->length, event.timestamp); - } else { - process_packet(packet, &event, midi, m); - } - packet = MIDIPacketNext(packet); - } -#ifdef CM_DEBUG - printf("\n"); -#endif -} - -static PmError -midi_in_open(PmInternal *midi, void *driverInfo) -{ - MIDIEndpointRef endpoint; - midi_macosxcm_type m; - OSStatus macHostError; - - /* insure that we have a time_proc for timing */ - if (midi->time_proc == NULL) { - if (!Pt_Started()) - Pt_Start(1, 0, 0); - /* time_get does not take a parameter, so coerce */ - midi->time_proc = (PmTimeProcPtr) Pt_Time; - } - endpoint = (MIDIEndpointRef) (long) descriptors[midi->device_id].descriptor; - if (endpoint == NULL_REF) { - return pmInvalidDeviceId; - } - - m = (midi_macosxcm_type) pm_alloc(sizeof(midi_macosxcm_node)); /* create */ - midi->descriptor = m; - if (!m) { - return pmInsufficientMemory; - } - m->error[0] = 0; - m->callback_error[0] = 0; - m->sync_time = 0; - m->delta = 0; - m->last_time = 0; - m->first_message = TRUE; - m->sysex_mode = FALSE; - m->sysex_word = 0; - m->sysex_byte_count = 0; - m->packetList = NULL; - m->packet = NULL; - m->last_command = 0; - m->last_msg_length = 0; - - macHostError = MIDIPortConnectSource(portIn, endpoint, midi); - if (macHostError != noErr) { - pm_hosterror = macHostError; - sprintf(pm_hosterror_text, - "Host error %ld: MIDIPortConnectSource() in midi_in_open()", - (long) macHostError); - midi->descriptor = NULL; - pm_free(m); - return pmHostError; - } - - return pmNoError; -} - -static PmError -midi_in_close(PmInternal *midi) -{ - MIDIEndpointRef endpoint; - OSStatus macHostError; - PmError err = pmNoError; - - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - - if (!m) return pmBadPtr; - - endpoint = (MIDIEndpointRef) (long) descriptors[midi->device_id].descriptor; - if (endpoint == NULL_REF) { - pm_hosterror = pmBadPtr; - } - - /* shut off the incoming messages before freeing data structures */ - macHostError = MIDIPortDisconnectSource(portIn, endpoint); - if (macHostError != noErr) { - pm_hosterror = macHostError; - sprintf(pm_hosterror_text, - "Host error %ld: MIDIPortDisconnectSource() in midi_in_close()", - (long) macHostError); - err = pmHostError; - } - - midi->descriptor = NULL; - pm_free(midi->descriptor); - - return err; -} - - -static PmError -midi_out_open(PmInternal *midi, void *driverInfo) -{ - midi_macosxcm_type m; - - m = (midi_macosxcm_type) pm_alloc(sizeof(midi_macosxcm_node)); /* create */ - midi->descriptor = m; - if (!m) { - return pmInsufficientMemory; - } - m->error[0] = 0; - m->callback_error[0] = 0; - m->sync_time = 0; - m->delta = 0; - m->last_time = 0; - m->first_message = TRUE; - m->sysex_mode = FALSE; - m->sysex_word = 0; - m->sysex_byte_count = 0; - m->packetList = (MIDIPacketList *) m->packetBuffer; - m->packet = NULL; - m->last_command = 0; - m->last_msg_length = 0; - m->min_next_time = 0; - m->byte_count = 0; - m->us_per_host_tick = 1000000.0 / AudioGetHostClockFrequency(); - m->host_ticks_per_byte = (UInt64) (1000000.0 / - (m->us_per_host_tick * MAX_BYTES_PER_S)); - return pmNoError; -} - - -static PmError -midi_out_close(PmInternal *midi) -{ - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - if (!m) return pmBadPtr; - - midi->descriptor = NULL; - pm_free(midi->descriptor); - - return pmNoError; -} - -static PmError -midi_abort(PmInternal *midi) -{ - PmError err = pmNoError; - OSStatus macHostError; - MIDIEndpointRef endpoint = - (MIDIEndpointRef) (long) descriptors[midi->device_id].descriptor; - macHostError = MIDIFlushOutput(endpoint); - if (macHostError != noErr) { - pm_hosterror = macHostError; - sprintf(pm_hosterror_text, - "Host error %ld: MIDIFlushOutput()", (long) macHostError); - err = pmHostError; - } - return err; -} - - -static PmError -midi_write_flush(PmInternal *midi, PmTimestamp timestamp) -{ - OSStatus macHostError; - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - MIDIEndpointRef endpoint = - (MIDIEndpointRef) (long) descriptors[midi->device_id].descriptor; - assert(m); - assert(endpoint); - if (m->packet != NULL) { - /* out of space, send the buffer and start refilling it */ - /* before we can send, maybe delay to limit data rate. OS X allows - * 15KB/s. */ - UInt64 now = AudioGetCurrentHostTime(); - if (now < m->min_next_time) { - usleep((useconds_t) - ((m->min_next_time - now) * m->us_per_host_tick)); - } - macHostError = MIDISend(portOut, endpoint, m->packetList); - m->packet = NULL; /* indicate no data in packetList now */ - m->min_next_time = now + m->byte_count * m->host_ticks_per_byte; - m->byte_count = 0; - if (macHostError != noErr) goto send_packet_error; - } - return pmNoError; - -send_packet_error: - pm_hosterror = macHostError; - sprintf(pm_hosterror_text, - "Host error %ld: MIDISend() in midi_write()", - (long) macHostError); - return pmHostError; - -} - - -static PmError -send_packet(PmInternal *midi, Byte *message, unsigned int messageLength, - MIDITimeStamp timestamp) -{ - PmError err; - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - assert(m); - - /* printf("add %d to packet %p len %d\n", message[0], m->packet, messageLength); */ - m->packet = MIDIPacketListAdd(m->packetList, sizeof(m->packetBuffer), - m->packet, timestamp, messageLength, - message); - m->byte_count += messageLength; - if (m->packet == NULL) { - /* out of space, send the buffer and start refilling it */ - /* make midi->packet non-null to fool midi_write_flush into sending */ - m->packet = (MIDIPacket *) 4; - /* timestamp is 0 because midi_write_flush ignores timestamp since - * timestamps are already in packets. The timestamp parameter is here - * because other API's need it. midi_write_flush can be called - * from system-independent code that must be cross-API. - */ - if ((err = midi_write_flush(midi, 0)) != pmNoError) return err; - m->packet = MIDIPacketListInit(m->packetList); - assert(m->packet); /* if this fails, it's a programming error */ - m->packet = MIDIPacketListAdd(m->packetList, sizeof(m->packetBuffer), - m->packet, timestamp, messageLength, - message); - assert(m->packet); /* can't run out of space on first message */ - } - return pmNoError; -} - - -static PmError -midi_write_short(PmInternal *midi, PmEvent *event) -{ - PmTimestamp when = event->timestamp; - PmMessage what = event->message; - MIDITimeStamp timestamp; - UInt64 when_ns; - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - Byte message[4]; - unsigned int messageLength; - - if (m->packet == NULL) { - m->packet = MIDIPacketListInit(m->packetList); - /* this can never fail, right? failure would indicate something - unrecoverable */ - assert(m->packet); - } - - /* compute timestamp */ - if (when == 0) when = midi->now; - /* if latency == 0, midi->now is not valid. We will just set it to zero */ - if (midi->latency == 0) when = 0; - when_ns = ((UInt64) (when + midi->latency) * (UInt64) 1000000) + m->delta; - timestamp = (MIDITimeStamp) AudioConvertNanosToHostTime(when_ns); - - message[0] = Pm_MessageStatus(what); - message[1] = Pm_MessageData1(what); - message[2] = Pm_MessageData2(what); - messageLength = midi_length(what); - - /* make sure we go foreward in time */ - if (timestamp < m->min_next_time) timestamp = m->min_next_time; - - #ifdef LIMIT_RATE - if (timestamp < m->last_time) - timestamp = m->last_time; - m->last_time = timestamp + messageLength * m->host_ticks_per_byte; - #endif - - /* Add this message to the packet list */ - return send_packet(midi, message, messageLength, timestamp); -} - - -static PmError -midi_begin_sysex(PmInternal *midi, PmTimestamp when) -{ - UInt64 when_ns; - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - assert(m); - m->sysex_byte_count = 0; - - /* compute timestamp */ - if (when == 0) when = midi->now; - /* if latency == 0, midi->now is not valid. We will just set it to zero */ - if (midi->latency == 0) when = 0; - when_ns = ((UInt64) (when + midi->latency) * (UInt64) 1000000) + m->delta; - m->sysex_timestamp = (MIDITimeStamp) AudioConvertNanosToHostTime(when_ns); - - if (m->packet == NULL) { - m->packet = MIDIPacketListInit(m->packetList); - /* this can never fail, right? failure would indicate something - unrecoverable */ - assert(m->packet); - } - return pmNoError; -} - - -static PmError -midi_end_sysex(PmInternal *midi, PmTimestamp when) -{ - PmError err; - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - assert(m); - - /* make sure we go foreward in time */ - if (m->sysex_timestamp < m->min_next_time) - m->sysex_timestamp = m->min_next_time; - - #ifdef LIMIT_RATE - if (m->sysex_timestamp < m->last_time) - m->sysex_timestamp = m->last_time; - m->last_time = m->sysex_timestamp + m->sysex_byte_count * - m->host_ticks_per_byte; - #endif - - /* now send what's in the buffer */ - err = send_packet(midi, m->sysex_buffer, m->sysex_byte_count, - m->sysex_timestamp); - m->sysex_byte_count = 0; - if (err != pmNoError) { - m->packet = NULL; /* flush everything in the packet list */ - return err; - } - return pmNoError; -} - - -static PmError -midi_write_byte(PmInternal *midi, unsigned char byte, PmTimestamp timestamp) -{ - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - assert(m); - if (m->sysex_byte_count >= SYSEX_BUFFER_SIZE) { - PmError err = midi_end_sysex(midi, timestamp); - if (err != pmNoError) return err; - } - m->sysex_buffer[m->sysex_byte_count++] = byte; - return pmNoError; -} - - -static PmError -midi_write_realtime(PmInternal *midi, PmEvent *event) -{ - /* to send a realtime message during a sysex message, first - flush all pending sysex bytes into packet list */ - PmError err = midi_end_sysex(midi, 0); - if (err != pmNoError) return err; - /* then we can just do a normal midi_write_short */ - return midi_write_short(midi, event); -} - -static unsigned int midi_has_host_error(PmInternal *midi) -{ - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - return (m->callback_error[0] != 0) || (m->error[0] != 0); -} - - -static void midi_get_host_error(PmInternal *midi, char *msg, unsigned int len) -{ - midi_macosxcm_type m = (midi_macosxcm_type) midi->descriptor; - msg[0] = 0; /* initialize to empty string */ - if (m) { /* make sure there is an open device to examine */ - if (m->error[0]) { - strncpy(msg, m->error, len); - m->error[0] = 0; /* clear the error */ - } else if (m->callback_error[0]) { - strncpy(msg, m->callback_error, len); - m->callback_error[0] = 0; /* clear the error */ - } - msg[len - 1] = 0; /* make sure string is terminated */ - } -} - - -MIDITimeStamp timestamp_pm_to_cm(PmTimestamp timestamp) -{ - UInt64 nanos; - if (timestamp <= 0) { - return (MIDITimeStamp)0; - } else { - nanos = (UInt64)timestamp * (UInt64)1000000; - return (MIDITimeStamp)AudioConvertNanosToHostTime(nanos); - } -} - -PmTimestamp timestamp_cm_to_pm(MIDITimeStamp timestamp) -{ - UInt64 nanos; - nanos = AudioConvertHostTimeToNanos(timestamp); - return (PmTimestamp)(nanos / (UInt64)1000000); -} - - -// -// Code taken from http://developer.apple.com/qa/qa2004/qa1374.html -////////////////////////////////////// -// Obtain the name of an endpoint without regard for whether it has connections. -// The result should be released by the caller. -CFStringRef EndpointName(MIDIEndpointRef endpoint, bool isExternal) -{ - CFMutableStringRef result = CFStringCreateMutable(NULL, 0); - CFStringRef str; - - // begin with the endpoint's name - str = NULL; - MIDIObjectGetStringProperty(endpoint, kMIDIPropertyName, &str); - if (str != NULL) { - CFStringAppend(result, str); - CFRelease(str); - } - - MIDIEntityRef entity = NULL_REF; - MIDIEndpointGetEntity(endpoint, &entity); - if (entity == NULL_REF) - // probably virtual - return result; - - if (CFStringGetLength(result) == 0) { - // endpoint name has zero length -- try the entity - str = NULL; - MIDIObjectGetStringProperty(entity, kMIDIPropertyName, &str); - if (str != NULL) { - CFStringAppend(result, str); - CFRelease(str); - } - } - // now consider the device's name - MIDIDeviceRef device = NULL_REF; - MIDIEntityGetDevice(entity, &device); - if (device == NULL_REF) - return result; - - str = NULL; - MIDIObjectGetStringProperty(device, kMIDIPropertyName, &str); - if (CFStringGetLength(result) == 0) { - CFRelease(result); - return str; - } - if (str != NULL) { - // if an external device has only one entity, throw away - // the endpoint name and just use the device name - if (isExternal && MIDIDeviceGetNumberOfEntities(device) < 2) { - CFRelease(result); - return str; - } else { - if (CFStringGetLength(str) == 0) { - CFRelease(str); - return result; - } - // does the entity name already start with the device name? - // (some drivers do this though they shouldn't) - // if so, do not prepend - if (CFStringCompareWithOptions( result, /* endpoint name */ - str /* device name */, - CFRangeMake(0, CFStringGetLength(str)), 0) != kCFCompareEqualTo) { - // prepend the device name to the entity name - if (CFStringGetLength(result) > 0) - CFStringInsert(result, 0, CFSTR(" ")); - CFStringInsert(result, 0, str); - } - CFRelease(str); - } - } - return result; -} - - -// Obtain the name of an endpoint, following connections. -// The result should be released by the caller. -static CFStringRef ConnectedEndpointName(MIDIEndpointRef endpoint) -{ - CFMutableStringRef result = CFStringCreateMutable(NULL, 0); - CFStringRef str; - OSStatus err; - long i; - - // Does the endpoint have connections? - CFDataRef connections = NULL; - long nConnected = 0; - bool anyStrings = false; - err = MIDIObjectGetDataProperty(endpoint, kMIDIPropertyConnectionUniqueID, &connections); - if (connections != NULL) { - // It has connections, follow them - // Concatenate the names of all connected devices - nConnected = CFDataGetLength(connections) / (int32_t) sizeof(MIDIUniqueID); - if (nConnected) { - const SInt32 *pid = (const SInt32 *)(CFDataGetBytePtr(connections)); - for (i = 0; i < nConnected; ++i, ++pid) { - MIDIUniqueID id = EndianS32_BtoN(*pid); - MIDIObjectRef connObject; - MIDIObjectType connObjectType; - err = MIDIObjectFindByUniqueID(id, &connObject, &connObjectType); - if (err == noErr) { - if (connObjectType == kMIDIObjectType_ExternalSource || - connObjectType == kMIDIObjectType_ExternalDestination) { - // Connected to an external device's endpoint (10.3 and later). - str = EndpointName((MIDIEndpointRef)(connObject), true); - } else { - // Connected to an external device (10.2) (or something else, catch-all) - str = NULL; - MIDIObjectGetStringProperty(connObject, kMIDIPropertyName, &str); - } - if (str != NULL) { - if (anyStrings) - CFStringAppend(result, CFSTR(", ")); - else anyStrings = true; - CFStringAppend(result, str); - CFRelease(str); - } - } - } - } - CFRelease(connections); - } - if (anyStrings) - return result; - - // Here, either the endpoint had no connections, or we failed to obtain names for any of them. - return EndpointName(endpoint, false); -} - - -char* cm_get_full_endpoint_name(MIDIEndpointRef endpoint) -{ -#ifdef OLDCODE - MIDIEntityRef entity; - MIDIDeviceRef device; - - CFStringRef endpointName = NULL; - CFStringRef deviceName = NULL; -#endif - CFStringRef fullName = NULL; - CFStringEncoding defaultEncoding; - char* newName; - - /* get the default string encoding */ - defaultEncoding = CFStringGetSystemEncoding(); - - fullName = ConnectedEndpointName(endpoint); - -#ifdef OLDCODE - /* get the entity and device info */ - MIDIEndpointGetEntity(endpoint, &entity); - MIDIEntityGetDevice(entity, &device); - - /* create the nicely formated name */ - MIDIObjectGetStringProperty(endpoint, kMIDIPropertyName, &endpointName); - MIDIObjectGetStringProperty(device, kMIDIPropertyName, &deviceName); - if (deviceName != NULL) { - fullName = CFStringCreateWithFormat(NULL, NULL, CFSTR("%@: %@"), - deviceName, endpointName); - } else { - fullName = endpointName; - } -#endif - /* copy the string into our buffer */ - if (fullName) { - newName = (char *) malloc(CFStringGetLength(fullName) + 1); - CFStringGetCString(fullName, newName, CFStringGetLength(fullName) + 1, - defaultEncoding); - } else { - newName = NULL; - } - - /* clean up */ -#ifdef OLDCODE - if (endpointName) CFRelease(endpointName); - if (deviceName) CFRelease(deviceName); -#endif - if (fullName) CFRelease(fullName); - - return newName; -} - - - -pm_fns_node pm_macosx_in_dictionary = { - none_write_short, - none_sysex, - none_sysex, - none_write_byte, - none_write_short, - none_write_flush, - none_synchronize, - midi_in_open, - midi_abort, - midi_in_close, - success_poll, - midi_has_host_error, - midi_get_host_error, -}; - -pm_fns_node pm_macosx_out_dictionary = { - midi_write_short, - midi_begin_sysex, - midi_end_sysex, - midi_write_byte, - midi_write_realtime, - midi_write_flush, - midi_synchronize, - midi_out_open, - midi_abort, - midi_out_close, - success_poll, - midi_has_host_error, - midi_get_host_error, -}; - - -PmError pm_macosxcm_init(void) -{ - ItemCount numInputs, numOutputs, numDevices; - MIDIEndpointRef endpoint; - int i; - OSStatus macHostError; - char *error_text; - - /* Determine the number of MIDI devices on the system */ - numDevices = MIDIGetNumberOfDevices(); - numInputs = MIDIGetNumberOfSources(); - numOutputs = MIDIGetNumberOfDestinations(); - - /* Return prematurely if no devices exist on the system - Note that this is not an error. There may be no devices. - Pm_CountDevices() will return zero, which is correct and - useful information - */ - if (numDevices <= 0) { - return pmNoError; - } - - - /* Initialize the client handle */ - macHostError = MIDIClientCreate(CFSTR("PortMidi"), NULL, NULL, &client); - if (macHostError != noErr) { - error_text = "MIDIClientCreate() in pm_macosxcm_init()"; - goto error_return; - } - - /* Create the input port */ - macHostError = MIDIInputPortCreate(client, CFSTR("Input port"), readProc, - NULL, &portIn); - if (macHostError != noErr) { - error_text = "MIDIInputPortCreate() in pm_macosxcm_init()"; - goto error_return; - } - - /* Create the output port */ - macHostError = MIDIOutputPortCreate(client, CFSTR("Output port"), &portOut); - if (macHostError != noErr) { - error_text = "MIDIOutputPortCreate() in pm_macosxcm_init()"; - goto error_return; - } - - /* Iterate over the MIDI input devices */ - for (i = 0; i < numInputs; i++) { - endpoint = MIDIGetSource(i); - if (endpoint == NULL_REF) { - continue; - } - - /* set the first input we see to the default */ - if (pm_default_input_device_id == -1) - pm_default_input_device_id = pm_descriptor_index; - - /* Register this device with PortMidi */ - char* full_endpoint_name = cm_get_full_endpoint_name(endpoint); - if (full_endpoint_name != NULL) { - pm_add_device("CoreMIDI", full_endpoint_name, - TRUE, (void *) (long) endpoint, &pm_macosx_in_dictionary); - - } - } - - /* Iterate over the MIDI output devices */ - for (i = 0; i < numOutputs; i++) { - endpoint = MIDIGetDestination(i); - if (endpoint == NULL_REF) { - continue; - } - - /* set the first output we see to the default */ - if (pm_default_output_device_id == -1) - pm_default_output_device_id = pm_descriptor_index; - - /* Register this device with PortMidi */ - char* full_endpoint_name = cm_get_full_endpoint_name(endpoint); - if (full_endpoint_name != NULL) { - pm_add_device("CoreMIDI", full_endpoint_name, - FALSE, (void *) (long) endpoint, - &pm_macosx_out_dictionary); - } - } - return pmNoError; - -error_return: - pm_hosterror = macHostError; - sprintf(pm_hosterror_text, "Host error %ld: %s\n", (long) macHostError, - error_text); - pm_macosxcm_term(); /* clear out any opened ports */ - return pmHostError; -} - -void pm_macosxcm_term(void) -{ - if (client != NULL_REF) MIDIClientDispose(client); - if (portIn != NULL_REF) MIDIPortDispose(portIn); - if (portOut != NULL_REF) MIDIPortDispose(portOut); -} |