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This commit moves the codes related to data block processing from packet streaming layer to AM824 layer. Each driver initializes amdtp stream structure for AM824 data block by calling amdtp_am824_init(). Then, a memory block is allocated for AM824 specific structure. This memory block is released by calling amdtp_stream_destroy(). When setting streaming parameters, it calls amdtp_am824_set_parameters(). When starting packet streaming, it calls amdtp_stream_start(). When stopping packet streaming, it calls amdtp_stream_stop(). Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
#ifndef SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
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#define SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
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#include <sound/pcm.h>
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#include <sound/rawmidi.h>
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#include "amdtp-stream.h"
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#define AM824_IN_PCM_FORMAT_BITS SNDRV_PCM_FMTBIT_S32
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#define AM824_OUT_PCM_FORMAT_BITS (SNDRV_PCM_FMTBIT_S16 | \
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SNDRV_PCM_FMTBIT_S32)
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/*
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* This module supports maximum 64 PCM channels for one PCM stream
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* This is for our convenience.
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*/
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#define AM824_MAX_CHANNELS_FOR_PCM 64
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/*
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* AMDTP packet can include channels for MIDI conformant data.
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* Each MIDI conformant data channel includes 8 MPX-MIDI data stream.
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* Each MPX-MIDI data stream includes one data stream from/to MIDI ports.
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*
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* This module supports maximum 1 MIDI conformant data channels.
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* Then this AMDTP packets can transfer maximum 8 MIDI data streams.
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*/
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#define AM824_MAX_CHANNELS_FOR_MIDI 1
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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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void amdtp_am824_set_pcm_position(struct amdtp_stream *s, unsigned int index,
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unsigned int position);
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void amdtp_am824_set_midi_position(struct amdtp_stream *s,
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unsigned int position);
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int amdtp_am824_add_pcm_hw_constraints(struct amdtp_stream *s,
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struct snd_pcm_runtime *runtime);
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void amdtp_am824_set_pcm_format(struct amdtp_stream *s,
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snd_pcm_format_t format);
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void amdtp_am824_midi_trigger(struct amdtp_stream *s, unsigned int port,
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struct snd_rawmidi_substream *midi);
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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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