Hi,
ALSA IEC 61883-1/6 packet streaming engine controls OHCI 1394 controller
to generate hardware IRQ for fixed number (=16) of isoc packets.
Additionally, the size of packet buffer is fixed for triple of interval
of hardware IRQ (=48).
This commit allows ALSA PCM applications to configure these parameters
by ALSA PCM interface. As a result, the size of PCM period is available
in the range between 125 usec and 64 msec (or 32 msec). The hardware
IRQ is scheduled for isoc packet which includes event across PCM period
boundary.
Takashi Sakamoto (12):
ALSA: firewire-lib: use variable size of queue for isoc packets
instead of fixed size
ALSA: bebob: share PCM buffer size for both direction
ALSA: fireworks: share PCM buffer size for both direction
ALSA: oxfw: share PCM buffer size for both direction
ALSA: dice: share PCM buffer size for both direction
ALSA: firewire-digi00x: share PCM buffer size for both direction
ALSA: firewire-tascam: share PCM buffer size for both direction
ALSA: firewire-motu: share PCM buffer size for both direction
ALSA: fireface: share PCM buffer size for both direction
ALSA: firewire-lib: schedule hardware IRQ according to the size of PCM
period
ALSA: firewire-lib: tune the maximum available size of PCM period
ALSA: firewire-lib: tune the minimum available size of PCM period
sound/firewire/amdtp-stream.c | 154 ++++++++++++++------
sound/firewire/amdtp-stream.h | 9 +-
sound/firewire/bebob/bebob.h | 3 +-
sound/firewire/bebob/bebob_midi.c | 2 +-
sound/firewire/bebob/bebob_pcm.c | 12 +-
sound/firewire/bebob/bebob_stream.c | 5 +-
sound/firewire/dice/dice-midi.c | 2 +-
sound/firewire/dice/dice-pcm.c | 20 ++-
sound/firewire/dice/dice-stream.c | 5 +-
sound/firewire/dice/dice.h | 3 +-
sound/firewire/digi00x/digi00x-midi.c | 2 +-
sound/firewire/digi00x/digi00x-pcm.c | 12 +-
sound/firewire/digi00x/digi00x-stream.c | 5 +-
sound/firewire/digi00x/digi00x.h | 3 +-
sound/firewire/fireface/ff-pcm.c | 13 +-
sound/firewire/fireface/ff-stream.c | 5 +-
sound/firewire/fireface/ff.h | 3 +-
sound/firewire/fireworks/fireworks.h | 3 +-
sound/firewire/fireworks/fireworks_midi.c | 2 +-
sound/firewire/fireworks/fireworks_pcm.c | 12 +-
sound/firewire/fireworks/fireworks_stream.c | 5 +-
sound/firewire/motu/motu-midi.c | 2 +-
sound/firewire/motu/motu-pcm.c | 12 +-
sound/firewire/motu/motu-stream.c | 5 +-
sound/firewire/motu/motu.h | 3 +-
sound/firewire/oxfw/oxfw-midi.c | 4 +-
sound/firewire/oxfw/oxfw-pcm.c | 17 ++-
sound/firewire/oxfw/oxfw-stream.c | 5 +-
sound/firewire/oxfw/oxfw.h | 3 +-
sound/firewire/tascam/tascam-pcm.c | 12 +-
sound/firewire/tascam/tascam-stream.c | 5 +-
sound/firewire/tascam/tascam.h | 3 +-
32 files changed, 266 insertions(+), 85 deletions(-)
--
2.20.1
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