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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2016-05-09 23:15:50 +0900
committerTakashi Iwai <tiwai@suse.de>2016-05-10 17:03:57 +0200
commitc71283cb682c28085125bea35e4c6149b538f5db (patch)
tree6c3eadd10d68059851e7d87058afcab1033b9e6d /sound/firewire/fireworks/fireworks_stream.c
parent2e00fde5c6ed8535244332ebb55e881baa54ae46 (diff)
ALSA: bebob: drop reuse of incoming packet parameter for outgoing packet parameter
Windows driver for BeBoB-based models mostly wait for transmitted packets, then transfer packets to the models. This looks for the relationship between incoming packets and outgoing packets to synchronize the sequence of presentation timestamp. However, the sequence between packets of both direction has no relationship. Even if receiving NO-DATA packets, the drivers transfer packets with meaningful value in SYT field. Additionally, the order of starting packets is always the same, independently of the source of clock. The corresponding driver is expected as a generator of presentation timestamp and these models can select it as a source of sampling clock. This commit drops reusing SYT sequence from ALSA bebob driver. The driver always transfer packets with presentation timestamp generated by ALSA firewire stack, without re-using the sequence of value in SYT field in incoming packets to outgoing packets. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/fireworks/fireworks_stream.c')
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