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alistair23-linux/sound/firewire/amdtp-am824.h

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ALSA: firewire-lib: add data block processing layer for AM824 format This commit adds data block processing layer for AM824 format. The new layer initializes streaming layer with its value for fmt field. Currently, most implementation of data block processing still remains streaming layer. In later commits, these codes will be moved to the layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-18 20:21:55 -06:00
#ifndef SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
#define SOUND_FIREWIRE_AMDTP_AM824_H_INCLUDED
ALSA: firewire-lib: move PCM substream constraint to AM824 layer In IEC 61883-6, PCM frames are transferred in Multi Bit Linear Audio data channel. The data channel transfers 16/20/24 bit PCM samples. Thus, PCM substream has a constrain about it. This commit moves codes related to the constraint from packet streaming layer to AM824 data block processing layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-18 20:21:57 -06:00
#include <sound/pcm.h>
ALSA: firewire-lib: add data block processing layer for AM824 format This commit adds data block processing layer for AM824 format. The new layer initializes streaming layer with its value for fmt field. Currently, most implementation of data block processing still remains streaming layer. In later commits, these codes will be moved to the layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-18 20:21:55 -06:00
#include "amdtp-stream.h"
ALSA: firewire-lib: rename parameter setting function for AM824 with FDF field 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>
2015-09-18 20:21:56 -06:00
int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate,
unsigned int pcm_channels,
unsigned int midi_ports,
bool double_pcm_frames);
ALSA: firewire-lib: move PCM substream constraint to AM824 layer In IEC 61883-6, PCM frames are transferred in Multi Bit Linear Audio data channel. The data channel transfers 16/20/24 bit PCM samples. Thus, PCM substream has a constrain about it. This commit moves codes related to the constraint from packet streaming layer to AM824 data block processing layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-18 20:21:57 -06:00
int amdtp_am824_add_pcm_hw_constraints(struct amdtp_stream *s,
struct snd_pcm_runtime *runtime);
ALSA: firewire-lib: add data block processing layer for AM824 format This commit adds data block processing layer for AM824 format. The new layer initializes streaming layer with its value for fmt field. Currently, most implementation of data block processing still remains streaming layer. In later commits, these codes will be moved to the layer. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-18 20:21:55 -06:00
int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir, enum cip_flags flags);
#endif