77 строки
2.5 KiB
C
77 строки
2.5 KiB
C
/*
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* For multichannel support
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*/
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#ifndef __SOUND_HDA_CHMAP_H
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#define __SOUND_HDA_CHMAP_H
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#include <sound/pcm.h>
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#include <sound/hdaudio.h>
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#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
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struct hdac_cea_channel_speaker_allocation {
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int ca_index;
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int speakers[8];
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/* derived values, just for convenience */
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int channels;
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int spk_mask;
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};
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struct hdac_chmap;
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struct hdac_chmap_ops {
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/*
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* Helpers for producing the channel map TLVs. These can be overridden
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* for devices that have non-standard mapping requirements.
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*/
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int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap,
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struct hdac_cea_channel_speaker_allocation *cap, int channels);
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void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,
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struct hdac_cea_channel_speaker_allocation *cap,
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unsigned int *chmap, int channels);
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/* check that the user-given chmap is supported */
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int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,
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int channels, unsigned char *chmap);
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void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
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unsigned char *chmap);
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void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
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unsigned char *chmap, int prepared);
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bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
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/* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
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int (*pin_get_slot_channel)(struct hdac_device *codec,
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hda_nid_t pin_nid, int asp_slot);
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int (*pin_set_slot_channel)(struct hdac_device *codec,
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hda_nid_t pin_nid, int asp_slot, int channel);
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void (*set_channel_count)(struct hdac_device *codec,
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hda_nid_t cvt_nid, int chs);
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};
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struct hdac_chmap {
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unsigned int channels_max; /* max over all cvts */
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struct hdac_chmap_ops ops;
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struct hdac_device *hdac;
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};
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void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
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struct hdac_chmap *chmap);
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int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
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int channels, bool chmap_set,
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bool non_pcm, unsigned char *map);
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int snd_hdac_get_active_channels(int ca);
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void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
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hda_nid_t pin_nid, bool non_pcm, int ca,
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int channels, unsigned char *map,
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bool chmap_set);
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void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
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struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
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int snd_hdac_chmap_to_spk_mask(unsigned char c);
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int snd_hdac_spk_to_chmap(int spk);
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int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
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struct hdac_chmap *chmap);
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#endif /* __SOUND_HDA_CHMAP_H */
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