The sequencer API is totally recoded with the style of "encapsulation"
in other api.
The structure becomes opaque and accessed only via functions.
Other changes:
- There is no longer group in client and port info.
- snd_seq_query_subs_t is renamed to snd_seq_query_subscribe_t.
- snd_seq_delete_port takes only the port id argument instead of
port_info structure.
- snd_seq_input/output_buffer_size are renamed
as snd_seq_get_input/output_buffer_size.
Similarly snd_seq_resize_input/output_buffer are renamed as
snd_seq_set_input/output_buffer_size.
- snd_seq_get_named_queue is renamed to snd_seq_query_named_queue.
- Sync codes are removed temporarily from API.
- Subscription conditions are accessed via the corresponding functions.
convert_time is named now as time_update.
- snd_seq_get/set_queue_owner are removed.
Use snd_seq_get/set_queue_info instead.
- Instrument put/get/remove structure is unified as snd_instr_header_t.
- dead SMP lock in es1968 (maestro2) driver.
Bugfix & enhances of sequencer stuff
by Scott McNab <sdm@fractalgraphics.com.au>:
- fix for the insrument list locking in SND_SEQ_EVENT_INSTR_BEGIN
and SND_SEQ_EVENT_INSTR_END events.
Note that nothing seems to really take notice of the list locking.
This is more an issue when we add support for editing instruments
anyway.
- added new alsa-lib utility function snd_seq_ev_set_varusr() which
is similar to snd_seq_ev_set_variable(), but specifies userspace
extended event data.
This is required in order to use the SND_SEQ_EVENT_INSTR_PUT
command (took me bloody ages to work this out btw)
- minor correction for gus & trident synth drivers
Fri, 17 Sep 1999 17:24:43 +0200
OK, the attached is the patch to alsa-driver and alsa-lib.
It will really violate the source/binary compatibility as
I wrote :-p
It includes:
- change of event data for accessing Timer Port
- new middle-level functions for sequencer in alsa-lib
- some comments / fixes
The test programs in alsa-lib (playmidi1, aconnect, aseqnet)
were rewritten to use the new functions above.
I included also a patch to pmidi-1.2.2.
