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| author | cbdev <cb@cbcdn.com> | 2019-12-05 21:05:14 +0100 |
|---|---|---|
| committer | cbdev <cb@cbcdn.com> | 2019-12-05 21:05:14 +0100 |
| commit | 3eada28582b144519e95a44ee3adc3f46d39036e (patch) | |
| tree | 4ba4e21ba4db75eaca30f888db9c2d1220a27299 /midimonster.h | |
| parent | d8d636901b43a4b94bc54052b3fb26517d48e055 (diff) | |
| download | midimonster-3eada28582b144519e95a44ee3adc3f46d39036e.tar.gz midimonster-3eada28582b144519e95a44ee3adc3f46d39036e.tar.bz2 midimonster-3eada28582b144519e95a44ee3adc3f46d39036e.zip | |
Add flags parameter to channel parser plugin API (Fixes #31)
Diffstat (limited to 'midimonster.h')
| -rw-r--r-- | midimonster.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/midimonster.h b/midimonster.h index 1192d6a..5ce0c73 100644 --- a/midimonster.h +++ b/midimonster.h @@ -87,8 +87,11 @@ struct _managed_fd; * Parse instance configuration from the user-supplied configuration * file. Returning a non-zero value fails config parsing. * * mmbackend_channel - * Parse a channel-spec to be mapped to/from. Returning NULL signals an - * out-of-memory condition and terminates the program. + * Parse a channel-spec to be mapped to/from. The `falgs` parameter supplies + * additional information to the parser, such as whether the channel is being + * queried for use as input (to the MIDIMonster core) and/or output + * (from the MIDIMonster core) channel (on a per-query basis). + * Returning NULL signals an out-of-memory condition and terminates the program. * * mmbackend_start * Called after all instances have been created and all mappings * have been set up. Only backends for which instances have been configured @@ -121,7 +124,7 @@ struct _managed_fd; */ typedef int (*mmbackend_handle_event)(struct _backend_instance* inst, size_t channels, struct _backend_channel** c, struct _channel_value* v); typedef struct _backend_instance* (*mmbackend_create_instance)(); -typedef struct _backend_channel* (*mmbackend_parse_channel)(struct _backend_instance* instance, char* spec); +typedef struct _backend_channel* (*mmbackend_parse_channel)(struct _backend_instance* instance, char* spec, uint8_t flags); typedef void (*mmbackend_free_channel)(struct _backend_channel* c); typedef int (*mmbackend_configure)(char* option, char* value); typedef int (*mmbackend_configure_instance)(struct _backend_instance* instance, char* option, char* value); @@ -130,6 +133,12 @@ typedef int (*mmbackend_start)(); typedef uint32_t (*mmbackend_interval)(); typedef int (*mmbackend_shutdown)(); +/* Bit masks for the `flags` parameter to mmbackend_parse_channel */ +typedef enum { + mmchannel_input = 0x1, + mmchannel_output = 0x2 +} mmbe_channel_flags; + /* Channel event value, .normalised is used by backends to determine channel values */ typedef struct _channel_value { union { |