| Message ID | 20200508043635.349339-1-o-takashi@sakamocchi.jp (mailing list archive) |
|---|---|
| Headers | show |
| Series | ALSA: firewire-lib: pool sequence of syt offset and data blocks in AMDTP domain structure | expand |
On Fri, 08 May 2020 06:36:25 +0200, Takashi Sakamoto wrote: > > Hi, > > In current implementation, the packets for outgoing AMDTP streams are > processed by per-stream calculation of syt offset and the number of data > blocks per packet. > > This patchset is a preparation for future extension that the packets for > outgoing AMDTP streams are processed according to the result of 'sampling > clock recovery' in IEC 61883-6:2005 from selected incoming AMDTP stream. > The preparation is to process packets for outgoing AMDTP streams by pool > in AMDTP domain structure for the sequence of syt offset and the number > of data blocks. The way to generate sequence is still the same as the > current implementation, which generates by ideal sampling transmission > frequency against IEEE 1394 bus clock. > > Takashi Sakamoto (10): > ALSA: firewire-lib: fix invalid assignment to union data for > directional parameter > ALSA: firewire-lib: use macro for maximum value of second in 1394 OHCI > isoc descriptor > ALSA: firewire-lib: add reference to domain structure from stream > structure > ALSA: firewire-lib: code refactoring for parameters of packet queue > and IRQ timing > ALSA: firewire-lib: code refactoring for syt computation > ALSA: firewire-lib: code refactoring for syt offset calculation > ALSA: firewire-lib: code refactoring for data block calculation > ALSA: firewire-lib: add cache for packet sequence to AMDTP domain > structure > ALSA: firewire-lib: pool ideal sequence of syt offset and data block > ALSA: firewire-lib: use sequence of syt offset and data block on pool > in AMDTP domain Applied all ten patches to for-next branch now. thanks, Takashi
Hi, In current implementation, the packets for outgoing AMDTP streams are processed by per-stream calculation of syt offset and the number of data blocks per packet. This patchset is a preparation for future extension that the packets for outgoing AMDTP streams are processed according to the result of 'sampling clock recovery' in IEC 61883-6:2005 from selected incoming AMDTP stream. The preparation is to process packets for outgoing AMDTP streams by pool in AMDTP domain structure for the sequence of syt offset and the number of data blocks. The way to generate sequence is still the same as the current implementation, which generates by ideal sampling transmission frequency against IEEE 1394 bus clock. Takashi Sakamoto (10): ALSA: firewire-lib: fix invalid assignment to union data for directional parameter ALSA: firewire-lib: use macro for maximum value of second in 1394 OHCI isoc descriptor ALSA: firewire-lib: add reference to domain structure from stream structure ALSA: firewire-lib: code refactoring for parameters of packet queue and IRQ timing ALSA: firewire-lib: code refactoring for syt computation ALSA: firewire-lib: code refactoring for syt offset calculation ALSA: firewire-lib: code refactoring for data block calculation ALSA: firewire-lib: add cache for packet sequence to AMDTP domain structure ALSA: firewire-lib: pool ideal sequence of syt offset and data block ALSA: firewire-lib: use sequence of syt offset and data block on pool in AMDTP domain sound/firewire/amdtp-am824.c | 3 +- sound/firewire/amdtp-stream.c | 326 ++++++++++++++++++++-------------- sound/firewire/amdtp-stream.h | 20 ++- 3 files changed, 209 insertions(+), 140 deletions(-)