Update of /cvsroot/pure-data/pd/portmidi
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv32724/pd/portmidi
Added Files:
Makefile README.txt portmidi.dsp portmidi.dsw
Log Message:
Add new portmidi and update portaudio. CHanges to makefile.nt and various
sources. Checking that I'm in sync with "help" file changes. I ended
up deleting help files in extra and recreating them under the new names.
--- NEW FILE: portmidi.dsw ---
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--- NEW FILE: Makefile ---
# MAKEFILE FOR PORTMIDI AND PORTTIME
# For debugging, define PM_CHECK_ERRORS
PMFLAGS = -DPM_CHECK_ERRORS
# Otherwise do not define PM_CHECK_ERRORS
# PMFLAGS =
# Use this for linux alsa (0.9x) version
versions = pm_linux/pmlinuxalsa.o
ALSALIB = -lasound
VFLAGS = -DPMALSA
# Use this for null (a dummy implementation for no Midi I/O:
# versions = pmlinuxnull.o
# ALSALIB =
# VFLAGS = -DPMNULL
pmlib = pm_linux/libportmidi.a
ptlib = porttime/libporttime.a
CC = gcc $(VFLAGS) $(PMFLAGS) -g -Ipm_common -Iporttime
pmobjects = pm_common/pmutil.o $(versions) pm_linux/pmlinux.o \
pm_common/portmidi.o pm_linux/pmlinuxalsa.o
ptobjects = porttime/porttime.o porttime/ptlinux.o
current: all
all: $(pmlib) $(ptlib) pm_test/test pm_test/sysex pm_test/midithread \
pm_test/latency pm_test/midithru
$(pmlib): Makefile $(pmobjects)
ar -cr $(pmlib) $(pmobjects)
$(ptlib): Makefile $(ptobjects)
ar -cr $(ptlib) $(ptobjects)
pm_linux/pmlinuxalsa.o: Makefile pm_linux/pmlinuxalsa.c pm_linux/pmlinuxalsa.h
$(CC) -c pm_linux/pmlinuxalsa.c -o pm_linux/pmlinuxalsa.o
pm_test/test: Makefile pm_test/test.o $(pmlib) $(ptlib)
$(CC) pm_test/test.c -o pm_test/test $(pmlib) $(ptlib) $(ALSALIB)
pm_test/sysex: Makefile pm_test/sysex.o $(pmlib) $(ptlib)
$(CC) pm_test/sysex.c -o pm_test/sysex $(pmlib) $(ptlib) $(ALSALIB)
pm_test/midithread: Makefile pm_test/midithread.o $(pmlib) $(ptlib)
$(CC) pm_test/midithread.c -o pm_test/midithread \
$(pmlib) $(ptlib) $(ALSALIB)
pm_test/latency: Makefile $(ptlib) pm_test/latency.o
$(CC) pm_test/latency.c -o pm_test/latency $(pmlib) $(ptlib) \
$(ALSALIB) -lpthread -lm
pm_test/midithru: Makefile $(ptlib) pm_test/midithru.o
$(CC) pm_test/midithru.c -o pm_test/midithru $(pmlib) $(ptlib) \
$(ALSALIB) -lpthread -lm
porttime/ptlinux.o: Makefile porttime/ptlinux.c
$(CC) -c porttime/ptlinux.c -o porttime/ptlinux.o
clean:
rm -f *.o *~ core* */*.o */*~ */core* pm_test/*/pm_dll.dll
rm -f *.opt *.ncb *.plg pm_win/Debug/pm_dll.lib pm_win/Release/pm_dll.lib
rm -f pm_test/*.opt pm_test/*.ncb
cleaner: clean
cleanest: cleaner
rm -f $(pmlib) $(ptlib) pm_test/test pm_test/sysex pm_test/midithread
rm -f pm_test/latency pm_test/midithru
backup: cleanest
cd ..; zip -r portmidi.zip portmidi
--- NEW FILE: portmidi.dsp ---
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CFG=portmidi - Win32 Debug
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--- NEW FILE: README.txt ---
README for PortMidi
Roger Dannenberg
6 April 2003
revised May 2004
For Windows, please see also README_WIN.txt and debugging_dlls.txt
in pm_win.
For Linux, please see also README_LINUX.txt in pm_linux.
POINTERS VS DEVICE NUMBERS
When you open a MIDI port, PortMidi allocates a structure to
maintain the state of the open device. Since every device is
also listed in a table, you might think it would be simpler to
use the table index rather than a pointer to identify a device.
This would also help with error checking (it's hard to make
sure a pointer is valid). PortMidi's design parallels that of
PortAudio.
ERROR HANDLING
Error handling turned out to be much more complicated than expected.
PortMidi functions return error codes that the caller can check.
In addition, errors may occur asynchronously due to MIDI input. In
this case, the error code is transferred to the next call to
Pm_Read or Pm_Write. Furthermore, an error can arise during a MIDI THRU
operation that is also invoked as a side effect of polling for input.
Ordinarily, the caller checks for an error code. If the error is
system-dependent, pmHostError is returned and the caller can
call Pm_GetHostErrorText to get a text description of the error.
Host errors are recorded in the system-specific data allocated for
each open MIDI port. However, if an error occurs on open or close,
we cannot store the error with the device because there will be
no device data (assuming PortMidi cleans up after devices that
are not open). For open and close, we will store the host error
in a global variable. The PortMidi is smart enough to look here
first when the user asks for ErrorText.
Because output to a MIDI Thru stream can be invoked as a side-effect
of a MIDI read operation, some errors normally associated with
writing MIDI can be returned from Pm_Read.
DEBUGGING
If you are building a console application for research, we suggest
compiling with the option PM_CHECK_ERRORS. This will insert a
check for error return values at the end of each PortMidi
function. If an error is encountered, a text message is printed
using printf(), the user is asked to type ENTER, and then exit(-1)
is called to clean up and terminate the program.
You should not use PM_CHECK_ERRORS if printf() does not work
(e.g. this is not a console application under Windows, or there
is no visible console on some other OS), and you should not use
PM_CHECK_ERRORS if you intend to recover from errors rather than
abruptly terminate the program.
The Windows version (and perhaps others) also offers a DEBUG
compile-time option. See README_WIN.txt.
