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RawMidi Interface

Macros

#define SND_RAWMIDI_DLSYM_VERSION   _dlsym_rawmidi_001
#define SND_RAWMIDI_APPEND
#define SND_RAWMIDI_NONBLOCK
#define SND_RAWMIDI_SYNC
#define snd_rawmidi_info_alloca(ptr)
 allocate an invalid snd_rawmidi_info_t using standard alloca
#define snd_rawmidi_params_alloca(ptr)
 allocate an invalid snd_rawmidi_params_t using standard alloca
#define snd_rawmidi_status_alloca(ptr)
 allocate an invalid snd_rawmidi_status_t using standard alloca

Typedefs

typedef struct _snd_rawmidi_info snd_rawmidi_info_t
typedef struct _snd_rawmidi_params snd_rawmidi_params_t
typedef struct _snd_rawmidi_status snd_rawmidi_status_t
typedef struct _snd_rawmidi snd_rawmidi_t

Enumerations

enum  snd_rawmidi_stream_t { SND_RAWMIDI_STREAM_OUTPUT = 0, SND_RAWMIDI_STREAM_INPUT, SND_RAWMIDI_STREAM_LAST = SND_RAWMIDI_STREAM_INPUT }
enum  snd_rawmidi_type_t { SND_RAWMIDI_TYPE_HW, SND_RAWMIDI_TYPE_SHM, SND_RAWMIDI_TYPE_INET, SND_RAWMIDI_TYPE_VIRTUAL }

Functions

int snd_rawmidi_open (snd_rawmidi_t **in_rmidi, snd_rawmidi_t **out_rmidi, const char *name, int mode)
 Opens a new connection to the RawMidi interface.
int snd_rawmidi_open_lconf (snd_rawmidi_t **in_rmidi, snd_rawmidi_t **out_rmidi, const char *name, int mode, snd_config_t *lconf)
 Opens a new connection to the RawMidi interface using local configuration.
int snd_rawmidi_close (snd_rawmidi_t *rmidi)
 close RawMidi handle
int snd_rawmidi_poll_descriptors_count (snd_rawmidi_t *rmidi)
 get count of poll descriptors for RawMidi handle
int snd_rawmidi_poll_descriptors (snd_rawmidi_t *rmidi, struct pollfd *pfds, unsigned int space)
 get poll descriptors
int snd_rawmidi_poll_descriptors_revents (snd_rawmidi_t *rawmidi, struct pollfd *pfds, unsigned int nfds, unsigned short *revent)
 get returned events from poll descriptors
int snd_rawmidi_nonblock (snd_rawmidi_t *rmidi, int nonblock)
 set nonblock mode
size_t snd_rawmidi_info_sizeof (void)
 get size of the snd_rawmidi_info_t structure in bytes
int snd_rawmidi_info_malloc (snd_rawmidi_info_t **ptr)
 allocate a new snd_rawmidi_info_t structure
void snd_rawmidi_info_free (snd_rawmidi_info_t *obj)
 frees the snd_rawmidi_info_t structure
void snd_rawmidi_info_copy (snd_rawmidi_info_t *dst, const snd_rawmidi_info_t *src)
 copy one snd_rawmidi_info_t structure to another
unsigned int snd_rawmidi_info_get_device (const snd_rawmidi_info_t *obj)
 get rawmidi device number
unsigned int snd_rawmidi_info_get_subdevice (const snd_rawmidi_info_t *obj)
 get rawmidi subdevice number
snd_rawmidi_stream_t snd_rawmidi_info_get_stream (const snd_rawmidi_info_t *obj)
 get rawmidi stream identification
int snd_rawmidi_info_get_card (const snd_rawmidi_info_t *obj)
 get rawmidi card number
unsigned int snd_rawmidi_info_get_flags (const snd_rawmidi_info_t *obj)
 get rawmidi flags
const char * snd_rawmidi_info_get_id (const snd_rawmidi_info_t *obj)
 get rawmidi hardware driver identifier
const char * snd_rawmidi_info_get_name (const snd_rawmidi_info_t *obj)
 get rawmidi hardware driver name
const char * snd_rawmidi_info_get_subdevice_name (const snd_rawmidi_info_t *obj)
 get rawmidi subdevice name
unsigned int snd_rawmidi_info_get_subdevices_count (const snd_rawmidi_info_t *obj)
 get rawmidi count of subdevices
unsigned int snd_rawmidi_info_get_subdevices_avail (const snd_rawmidi_info_t *obj)
 get rawmidi available count of subdevices
void snd_rawmidi_info_set_device (snd_rawmidi_info_t *obj, unsigned int val)
 set rawmidi device number
void snd_rawmidi_info_set_subdevice (snd_rawmidi_info_t *obj, unsigned int val)
 set rawmidi subdevice number
void snd_rawmidi_info_set_stream (snd_rawmidi_info_t *obj, snd_rawmidi_stream_t val)
 set rawmidi stream identifier
int snd_rawmidi_info (snd_rawmidi_t *rmidi, snd_rawmidi_info_t *info)
 get information about RawMidi handle
size_t snd_rawmidi_params_sizeof (void)
 get size of the snd_rawmidi_params_t structure in bytes
int snd_rawmidi_params_malloc (snd_rawmidi_params_t **ptr)
 allocate the snd_rawmidi_params_t structure
void snd_rawmidi_params_free (snd_rawmidi_params_t *obj)
 frees the snd_rawmidi_params_t structure
void snd_rawmidi_params_copy (snd_rawmidi_params_t *dst, const snd_rawmidi_params_t *src)
 copy one snd_rawmidi_params_t structure to another
int snd_rawmidi_params_set_buffer_size (snd_rawmidi_t *rmidi, snd_rawmidi_params_t *params, size_t val)
 set rawmidi I/O ring buffer size
size_t snd_rawmidi_params_get_buffer_size (const snd_rawmidi_params_t *params)
 get rawmidi I/O ring buffer size
int snd_rawmidi_params_set_avail_min (snd_rawmidi_t *rmidi, snd_rawmidi_params_t *params, size_t val)
 set minimum available bytes in rawmidi I/O ring buffer for wakeup
size_t snd_rawmidi_params_get_avail_min (const snd_rawmidi_params_t *params)
 get minimum available bytes in rawmidi I/O ring buffer for wakeup
int snd_rawmidi_params_set_no_active_sensing (snd_rawmidi_t *rmidi, snd_rawmidi_params_t *params, int val)
 set no-active-sensing action on snd_rawmidi_close()
int snd_rawmidi_params_get_no_active_sensing (const snd_rawmidi_params_t *params)
 get no-active-sensing action status
int snd_rawmidi_params (snd_rawmidi_t *rmidi, snd_rawmidi_params_t *params)
 set parameters about rawmidi stream
int snd_rawmidi_params_current (snd_rawmidi_t *rmidi, snd_rawmidi_params_t *params)
 get current parameters about rawmidi stream
size_t snd_rawmidi_status_sizeof (void)
 get size of the snd_rawmidi_status_t structure in bytes
int snd_rawmidi_status_malloc (snd_rawmidi_status_t **ptr)
 allocate the snd_rawmidi_status_t structure
void snd_rawmidi_status_free (snd_rawmidi_status_t *obj)
 frees the snd_rawmidi_status_t structure
void snd_rawmidi_status_copy (snd_rawmidi_status_t *dst, const snd_rawmidi_status_t *src)
 copy one snd_rawmidi_status_t structure to another
void snd_rawmidi_status_get_tstamp (const snd_rawmidi_status_t *obj, snd_htimestamp_t *ptr)
 get the start timestamp
size_t snd_rawmidi_status_get_avail (const snd_rawmidi_status_t *obj)
 get current available bytes in the rawmidi I/O ring buffer
size_t snd_rawmidi_status_get_xruns (const snd_rawmidi_status_t *obj)
 get count of xruns
int snd_rawmidi_status (snd_rawmidi_t *rmidi, snd_rawmidi_status_t *status)
 get status of rawmidi stream
int snd_rawmidi_drain (snd_rawmidi_t *rmidi)
 drain all bytes in the rawmidi I/O ring buffer
int snd_rawmidi_drop (snd_rawmidi_t *rmidi)
 drop all bytes in the rawmidi I/O ring buffer immediately
ssize_t snd_rawmidi_write (snd_rawmidi_t *rmidi, const void *buffer, size_t size)
 write MIDI bytes to MIDI stream
ssize_t snd_rawmidi_read (snd_rawmidi_t *rmidi, void *buffer, size_t size)
 read MIDI bytes from MIDI stream
const char * snd_rawmidi_name (snd_rawmidi_t *rmidi)
 get identifier of RawMidi handle
snd_rawmidi_type_t snd_rawmidi_type (snd_rawmidi_t *rmidi)
 get type of RawMidi handle
snd_rawmidi_stream_t snd_rawmidi_stream (snd_rawmidi_t *rawmidi)
 get stream (direction) of RawMidi handle

Detailed Description

The RawMidi Interface. See RawMidi interface page for more details.


Macro Definition Documentation

#define SND_RAWMIDI_APPEND

Append (flag to open mode)

#define SND_RAWMIDI_DLSYM_VERSION   _dlsym_rawmidi_001

dlsym version for interface entry callback

#define snd_rawmidi_info_alloca (   ptr)

allocate an invalid snd_rawmidi_info_t using standard alloca

Parameters:
ptrreturned pointer
#define SND_RAWMIDI_NONBLOCK

Non blocking mode (flag to open mode)

#define snd_rawmidi_params_alloca (   ptr)

allocate an invalid snd_rawmidi_params_t using standard alloca

Parameters:
ptrreturned pointer
#define snd_rawmidi_status_alloca (   ptr)

allocate an invalid snd_rawmidi_status_t using standard alloca

Parameters:
ptrreturned pointer
#define SND_RAWMIDI_SYNC

Write sync mode (Flag to open mode)


Typedef Documentation

typedef struct _snd_rawmidi_info snd_rawmidi_info_t

RawMidi information container

typedef struct _snd_rawmidi_params snd_rawmidi_params_t

RawMidi settings container

typedef struct _snd_rawmidi_status snd_rawmidi_status_t

RawMidi status container

typedef struct _snd_rawmidi snd_rawmidi_t

RawMidi handle


Enumeration Type Documentation

RawMidi stream (direction)

Enumerator:
SND_RAWMIDI_STREAM_OUTPUT 

Output stream

SND_RAWMIDI_STREAM_INPUT 

Input stream

RawMidi type

Enumerator:
SND_RAWMIDI_TYPE_HW 

Kernel level RawMidi

SND_RAWMIDI_TYPE_SHM 

Shared memory client RawMidi (not yet implemented)

SND_RAWMIDI_TYPE_INET 

INET client RawMidi (not yet implemented)

SND_RAWMIDI_TYPE_VIRTUAL 

Virtual (sequencer) RawMidi


Function Documentation

int snd_rawmidi_close ( snd_rawmidi_t rawmidi)

close RawMidi handle

Parameters:
rawmidiRawMidi handle
Returns:
0 on success otherwise a negative error code

Closes the specified RawMidi handle and frees all associated resources.

Examples:
/test/rawmidi.c.
int snd_rawmidi_drain ( snd_rawmidi_t rawmidi)

drain all bytes in the rawmidi I/O ring buffer

Parameters:
rawmidiRawMidi handle
Returns:
0 on success otherwise a negative error code

Waits until all MIDI bytes are not drained (sent) to the hardware device.

Examples:
/test/rawmidi.c.
int snd_rawmidi_drop ( snd_rawmidi_t rawmidi)

drop all bytes in the rawmidi I/O ring buffer immediately

Parameters:
rawmidiRawMidi handle
Returns:
0 on success otherwise a negative error code
int snd_rawmidi_info ( snd_rawmidi_t rawmidi,
snd_rawmidi_info_t info 
)

get information about RawMidi handle

Parameters:
rawmidiRawMidi handle
infopointer to a snd_rawmidi_info_t structure to be filled
Returns:
0 on success otherwise a negative error code
void snd_rawmidi_info_copy ( snd_rawmidi_info_t dst,
const snd_rawmidi_info_t src 
)

copy one snd_rawmidi_info_t structure to another

Parameters:
dstdestination snd_rawmidi_info_t structure
srcsource snd_rawmidi_info_t structure
void snd_rawmidi_info_free ( snd_rawmidi_info_t info)

frees the snd_rawmidi_info_t structure

Parameters:
infopointer to the snd_rawmidi_info_t structure to free

Frees the given snd_rawmidi_params_t structure using the standard free C library function.

int snd_rawmidi_info_get_card ( const snd_rawmidi_info_t info)

get rawmidi card number

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi card number
unsigned int snd_rawmidi_info_get_device ( const snd_rawmidi_info_t info)

get rawmidi device number

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi device number
unsigned int snd_rawmidi_info_get_flags ( const snd_rawmidi_info_t info)

get rawmidi flags

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi flags
const char* snd_rawmidi_info_get_id ( const snd_rawmidi_info_t info)

get rawmidi hardware driver identifier

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi hardware driver identifier
const char* snd_rawmidi_info_get_name ( const snd_rawmidi_info_t info)

get rawmidi hardware driver name

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi hardware driver name
snd_rawmidi_stream_t snd_rawmidi_info_get_stream ( const snd_rawmidi_info_t info)

get rawmidi stream identification

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi stream identification
unsigned int snd_rawmidi_info_get_subdevice ( const snd_rawmidi_info_t info)

get rawmidi subdevice number

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi subdevice number
const char* snd_rawmidi_info_get_subdevice_name ( const snd_rawmidi_info_t info)

get rawmidi subdevice name

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi subdevice name
unsigned int snd_rawmidi_info_get_subdevices_avail ( const snd_rawmidi_info_t info)

get rawmidi available count of subdevices

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi available count of subdevices
unsigned int snd_rawmidi_info_get_subdevices_count ( const snd_rawmidi_info_t info)

get rawmidi count of subdevices

Parameters:
infopointer to a snd_rawmidi_info_t structure
Returns:
rawmidi count of subdevices
int snd_rawmidi_info_malloc ( snd_rawmidi_info_t **  info)

allocate a new snd_rawmidi_info_t structure

Parameters:
inforeturned pointer
Returns:
0 on success otherwise a negative error code if fails

Allocates a new snd_rawmidi_params_t structure using the standard malloc C library function.

void snd_rawmidi_info_set_device ( snd_rawmidi_info_t info,
unsigned int  val 
)

set rawmidi device number

Parameters:
infopointer to a snd_rawmidi_info_t structure
valdevice number
void snd_rawmidi_info_set_stream ( snd_rawmidi_info_t info,
snd_rawmidi_stream_t  val 
)

set rawmidi stream identifier

Parameters:
infopointer to a snd_rawmidi_info_t structure
valrawmidi stream identifier
void snd_rawmidi_info_set_subdevice ( snd_rawmidi_info_t info,
unsigned int  val 
)

set rawmidi subdevice number

Parameters:
infopointer to a snd_rawmidi_info_t structure
valsubdevice number
size_t snd_rawmidi_info_sizeof ( void  )

get size of the snd_rawmidi_info_t structure in bytes

Returns:
size of the snd_rawmidi_info_t structure in bytes
const char* snd_rawmidi_name ( snd_rawmidi_t rawmidi)

get identifier of RawMidi handle

Parameters:
rawmidia RawMidi handle
Returns:
ascii identifier of RawMidi handle

Returns the ASCII identifier of given RawMidi handle. It's the same identifier specified in snd_rawmidi_open().

int snd_rawmidi_nonblock ( snd_rawmidi_t rawmidi,
int  nonblock 
)

set nonblock mode

Parameters:
rawmidiRawMidi handle
nonblock0 = block, 1 = nonblock mode
Returns:
0 on success otherwise a negative error code

The nonblock mode cannot be used when the stream is in SND_RAWMIDI_APPEND state.

int snd_rawmidi_open ( snd_rawmidi_t **  inputp,
snd_rawmidi_t **  outputp,
const char *  name,
int  mode 
)

Opens a new connection to the RawMidi interface.

Parameters:
inputpReturned input handle (NULL if not wanted)
outputpReturned output handle (NULL if not wanted)
nameASCII identifier of the RawMidi handle
modeOpen mode
Returns:
0 on success otherwise a negative error code

Opens a new connection to the RawMidi interface specified with an ASCII identifier and mode.

Examples:
/test/rawmidi.c.
int snd_rawmidi_open_lconf ( snd_rawmidi_t **  inputp,
snd_rawmidi_t **  outputp,
const char *  name,
int  mode,
snd_config_t lconf 
)

Opens a new connection to the RawMidi interface using local configuration.

Parameters:
inputpReturned input handle (NULL if not wanted)
outputpReturned output handle (NULL if not wanted)
nameASCII identifier of the RawMidi handle
modeOpen mode
lconfLocal configuration
Returns:
0 on success otherwise a negative error code

Opens a new connection to the RawMidi interface specified with an ASCII identifier and mode.

int snd_rawmidi_params ( snd_rawmidi_t rawmidi,
snd_rawmidi_params_t params 
)

set parameters about rawmidi stream

Parameters:
rawmidiRawMidi handle
paramspointer to a snd_rawmidi_params_t structure to be filled
Returns:
0 on success otherwise a negative error code
void snd_rawmidi_params_copy ( snd_rawmidi_params_t dst,
const snd_rawmidi_params_t src 
)

copy one snd_rawmidi_params_t structure to another

Parameters:
dstdestination snd_rawmidi_params_t structure
srcsource snd_rawmidi_params_t structure
int snd_rawmidi_params_current ( snd_rawmidi_t rawmidi,
snd_rawmidi_params_t params 
)

get current parameters about rawmidi stream

Parameters:
rawmidiRawMidi handle
paramspointer to a snd_rawmidi_params_t structure to be filled
Returns:
0 on success otherwise a negative error code
void snd_rawmidi_params_free ( snd_rawmidi_params_t params)

frees the snd_rawmidi_params_t structure

Parameters:
paramspointer to the snd_rawmidi_params_t structure to free

Frees the given snd_rawmidi_params_t structure using the standard free C library function.

size_t snd_rawmidi_params_get_avail_min ( const snd_rawmidi_params_t params)

get minimum available bytes in rawmidi I/O ring buffer for wakeup

Parameters:
paramspointer to snd_rawmidi_params_t structure
Returns:
minimum available bytes
size_t snd_rawmidi_params_get_buffer_size ( const snd_rawmidi_params_t params)

get rawmidi I/O ring buffer size

Parameters:
paramspointer to a snd_rawmidi_params_t structure
Returns:
size of rawmidi I/O ring buffer in bytes
int snd_rawmidi_params_get_no_active_sensing ( const snd_rawmidi_params_t params)

get no-active-sensing action status

Parameters:
paramspointer to snd_rawmidi_params_t structure
Returns:
the current status (0 = enable, 1 = disable the active sensing message)
int snd_rawmidi_params_malloc ( snd_rawmidi_params_t **  params)

allocate the snd_rawmidi_params_t structure

Parameters:
paramsreturned pointer
Returns:
0 on success otherwise a negative error code if fails

Allocates a new snd_rawmidi_params_t structure using the standard malloc C library function.

int snd_rawmidi_params_set_avail_min ( snd_rawmidi_t rawmidi,
snd_rawmidi_params_t params,
size_t  val 
)

set minimum available bytes in rawmidi I/O ring buffer for wakeup

Parameters:
rawmidiRawMidi handle
paramspointer to a snd_rawmidi_params_t structure
valdesired value
int snd_rawmidi_params_set_buffer_size ( snd_rawmidi_t rawmidi,
snd_rawmidi_params_t params,
size_t  val 
)

set rawmidi I/O ring buffer size

Parameters:
rawmidiRawMidi handle
paramspointer to a snd_rawmidi_params_t structure
valsize in bytes
Returns:
0 on success otherwise a negative error code
int snd_rawmidi_params_set_no_active_sensing ( snd_rawmidi_t rawmidi,
snd_rawmidi_params_t params,
int  val 
)

set no-active-sensing action on snd_rawmidi_close()

Parameters:
rawmidiRawMidi handle
paramspointer to snd_rawmidi_params_t structure
valvalue: 0 = enable to send the active sensing message, 1 = disable
Returns:
0 on success otherwise a negative error code
size_t snd_rawmidi_params_sizeof ( void  )

get size of the snd_rawmidi_params_t structure in bytes

Returns:
size of the snd_rawmidi_params_t structure in bytes
int snd_rawmidi_poll_descriptors ( snd_rawmidi_t rawmidi,
struct pollfd *  pfds,
unsigned int  space 
)

get poll descriptors

Parameters:
rawmidiRawMidi handle
pfdsarray of poll descriptors
spacespace in the poll descriptor array
Returns:
count of filled descriptors
int snd_rawmidi_poll_descriptors_count ( snd_rawmidi_t rawmidi)

get count of poll descriptors for RawMidi handle

Parameters:
rawmidiRawMidi handle
Returns:
count of poll descriptors
int snd_rawmidi_poll_descriptors_revents ( snd_rawmidi_t rawmidi,
struct pollfd *  pfds,
unsigned int  nfds,
unsigned short *  revents 
)

get returned events from poll descriptors

Parameters:
rawmidirawmidi RawMidi handle
pfdsarray of poll descriptors
nfdscount of poll descriptors
reventsreturned events
Returns:
zero if success, otherwise a negative error code
ssize_t snd_rawmidi_read ( snd_rawmidi_t rawmidi,
void *  buffer,
size_t  size 
)

read MIDI bytes from MIDI stream

Parameters:
rawmidiRawMidi handle
bufferbuffer to store the input MIDI bytes
sizeinput buffer size in bytes
Examples:
/test/rawmidi.c.
int snd_rawmidi_status ( snd_rawmidi_t rawmidi,
snd_rawmidi_status_t status 
)

get status of rawmidi stream

Parameters:
rawmidiRawMidi handle
statuspointer to a snd_rawmidi_status_t structure to be filled
Returns:
0 on success otherwise a negative error code
void snd_rawmidi_status_copy ( snd_rawmidi_status_t dst,
const snd_rawmidi_status_t src 
)

copy one snd_rawmidi_status_t structure to another

Parameters:
dstdestination snd_rawmidi_status_t structure
srcsource snd_rawmidi_status_t structure
void snd_rawmidi_status_free ( snd_rawmidi_status_t status)

frees the snd_rawmidi_status_t structure

Parameters:
statuspointer to the snd_rawmidi_status_t structure to free

Frees the given snd_rawmidi_status_t structure using the standard free C library function.

size_t snd_rawmidi_status_get_avail ( const snd_rawmidi_status_t status)

get current available bytes in the rawmidi I/O ring buffer

Parameters:
statuspointer to a snd_rawmidi_status_t structure
Returns:
current available bytes in the rawmidi I/O ring buffer
void snd_rawmidi_status_get_tstamp ( const snd_rawmidi_status_t status,
snd_htimestamp_t tstamp 
)

get the start timestamp

Parameters:
statuspointer to a snd_rawmidi_status_t structure
tstampreturned timestamp value
size_t snd_rawmidi_status_get_xruns ( const snd_rawmidi_status_t status)

get count of xruns

Parameters:
statuspointer to a snd_rawmidi_status_t structure
Returns:
count of xruns
int snd_rawmidi_status_malloc ( snd_rawmidi_status_t **  ptr)

allocate the snd_rawmidi_status_t structure

Parameters:
ptrreturned pointer
Returns:
0 on success otherwise a negative error code if fails

Allocates a new snd_rawmidi_status_t structure using the standard malloc C library function.

size_t snd_rawmidi_status_sizeof ( void  )

get size of the snd_rawmidi_status_t structure in bytes

Returns:
size of the snd_rawmidi_status_t structure in bytes
snd_rawmidi_stream_t snd_rawmidi_stream ( snd_rawmidi_t rawmidi)

get stream (direction) of RawMidi handle

Parameters:
rawmidia RawMidi handle
Returns:
stream of RawMidi handle

Returns the stream snd_rawmidi_stream_t of given RawMidi handle.

snd_rawmidi_type_t snd_rawmidi_type ( snd_rawmidi_t rawmidi)

get type of RawMidi handle

Parameters:
rawmidia RawMidi handle
Returns:
type of RawMidi handle

Returns the type snd_rawmidi_type_t of given RawMidi handle.

ssize_t snd_rawmidi_write ( snd_rawmidi_t rawmidi,
const void *  buffer,
size_t  size 
)

write MIDI bytes to MIDI stream

Parameters:
rawmidiRawMidi handle
bufferbuffer containing MIDI bytes
sizeoutput buffer size in bytes
Examples:
/test/rawmidi.c.