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pcm: plug - add automatic conversion for iec958 subframe samples

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As Pavel noted, a possibility to automatically convert standard
linear samples to iec958 subframe format would be handy for latest
Raspberry HDMI driver.

Link: https://lore.kernel.org/alsa-devel/81b0be0a-5ab7-db91-21cb-0c59a55291e9@ivitera.com/
Suggested-by: Pavel Hofman <pavel.hofman@ivitera.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2024-02-09 11:21:04 +01:00
parent 2a736a0d25
commit d8ce72f256
3 changed files with 46 additions and 1 deletions
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13
include/pcm_plugin.h
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@ -133,6 +133,19 @@ int _snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
snd_config_t *root, snd_config_t *conf,
snd_pcm_stream_t stream, int mode);
/*
* IEC958 subframe conversion plugin
*/
int snd_pcm_iec958_open(snd_pcm_t **pcmp, const char *name,
snd_pcm_format_t sformat, snd_pcm_t *slave,
int close_slave,
const unsigned char *status_bits,
const unsigned char *preamble_vals,
int hdmi_mode);
int _snd_pcm_iec958_open(snd_pcm_t **pcmp, const char *name,
snd_config_t *root, snd_config_t *conf,
snd_pcm_stream_t stream, int mode);
/*
* Route plugin for linear formats
*/