51c29fd213
The value of FDF field in CIP header is protocol-dependent. Thus, it's better to allow data block processing layer to decide the value in any timing. In AM824 data format, the value of FDF field in CIP header indicates N-flag and Nominal Sampling Frequency Code (sfc). The N-flag is for switching 'Clock-based rate control mode' and 'Command-based rate control mode'. In our implementation, 'Clock-based rate control mode' is just supported. Therefore, When sampling transfer frequency is decided, then the FDF can be set. This commit replaces 'amdtp_stream_set_parameters' with 'amdtp_am824_set_parameters' to set the FDF. This is the same timing to decide the ration between the number of data blocks and the number of PCM frames. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 lines
439 B
C
14 lines
439 B
C
#ifndef SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
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#define SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
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#include "amdtp-stream.h"
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int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate,
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unsigned int pcm_channels,
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unsigned int midi_ports,
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bool double_pcm_frames);
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int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit,
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enum amdtp_stream_direction dir, enum cip_flags flags);
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#endif
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