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author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2016-09-29 08:57:20 +0900 |
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committer | Takashi Iwai <tiwai@suse.de> | 2016-09-30 17:12:30 +0200 |
commit | 21dcb000c8cfe38d3120419e0bd5360855318e55 (patch) | |
tree | 844cb5d43a02d891beb3a48da63dd096bd7f184b | |
parent | 64481b3c72d758e8330e742aac95c7b66b863020 (diff) | |
download | alsa-lib-21dcb000c8cfe38d3120419e0bd5360855318e55.tar.gz |
Update include/sound/tlv.h from 4.9-pre kernel uapi
The UAPI header in 4.9-pre kernel newly includes existent macros related
to tlv operation, mainly for layout of TLV packet payload.
This commit updates corresponding backport header in this library.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r-- | include/sound/tlv.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/include/sound/tlv.h b/include/sound/tlv.h index 33d747df..b4df440c 100644 --- a/include/sound/tlv.h +++ b/include/sound/tlv.h @@ -20,4 +20,81 @@ #define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */ #define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */ +/* + * channel-mapping TLV items + * TLV length must match with num_channels + */ +#define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */ +#define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */ +#define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */ + +/* + * TLV structure is right behind the struct snd_ctl_tlv: + * unsigned int type - see SNDRV_CTL_TLVT_* + * unsigned int length + * .... data aligned to sizeof(unsigned int), use + * block_length = (length + (sizeof(unsigned int) - 1)) & + * ~(sizeof(unsigned int) - 1)) .... + */ +#define SNDRV_CTL_TLVD_ITEM(type, ...) \ + (type), SNDRV_CTL_TLVD_LENGTH(__VA_ARGS__), __VA_ARGS__ +#define SNDRV_CTL_TLVD_LENGTH(...) \ + ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ })) + +#define SNDRV_CTL_TLVD_CONTAINER_ITEM(...) \ + SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__) +#define SNDRV_CTL_TLVD_DECLARE_CONTAINER(name, ...) \ + unsigned int name[] = { \ + SNDRV_CTL_TLVD_CONTAINER_ITEM(__VA_ARGS__) \ + } + +#define SNDRV_CTL_TLVD_DB_SCALE_MASK 0xffff +#define SNDRV_CTL_TLVD_DB_SCALE_MUTE 0x10000 +#define SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \ + SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_SCALE, \ + (min), \ + ((step) & SNDRV_CTL_TLVD_DB_SCALE_MASK) | \ + ((mute) ? SNDRV_CTL_TLVD_DB_SCALE_MUTE : 0)) +#define SNDRV_CTL_TLVD_DECLARE_DB_SCALE(name, min, step, mute) \ + unsigned int name[] = { \ + SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \ + } + +/* dB scale specified with min/max values instead of step */ +#define SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) \ + SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB)) +#define SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ + SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB)) +#define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(name, min_dB, max_dB) \ + unsigned int name[] = { \ + SNDRV_CTL_TLVD_DB_MINMAX_ITEM(min_dB, max_dB) \ + } +#define SNDRV_CTL_TLVD_DECLARE_DB_MINMAX_MUTE(name, min_dB, max_dB) \ + unsigned int name[] = { \ + SNDRV_CTL_TLVD_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) \ + } + +/* linear volume between min_dB and max_dB (.01dB unit) */ +#define SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) \ + SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB)) +#define SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(name, min_dB, max_dB) \ + unsigned int name[] = { \ + SNDRV_CTL_TLVD_DB_LINEAR_ITEM(min_dB, max_dB) \ + } + +/* dB range container: + * Items in dB range container must be ordered by their values and by their + * dB values. This implies that larger values must correspond with larger + * dB values (which is also required for all other mixer controls). + */ +/* Each item is: <min> <max> <TLV> */ +#define SNDRV_CTL_TLVD_DB_RANGE_ITEM(...) \ + SNDRV_CTL_TLVD_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__) +#define SNDRV_CTL_TLVD_DECLARE_DB_RANGE(name, ...) \ + unsigned int name[] = { \ + SNDRV_CTL_TLVD_DB_RANGE_ITEM(__VA_ARGS__) \ + } + +#define SNDRV_CTL_TLVD_DB_GAIN_MUTE -9999999 + #endif |