On Aug 30 2016 16:24, Clemens Ladisch wrote: > In the kernel, you could use the macros from include/sound/tlv.h. > > Either copy them into your test program, and use them directly: > > /* 4 words: */ > DECLARE_TLV_DB_MINMAX(orig, -60, +60); > /* container with only one subitem; 8 words: */ > DECLARE_TLV_CONTAINER(orig_container, > TLV_ITEM(SNDRV_CTL_TLVT_CHMAP_FIXED, > SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE) > ); > > or create the values by hand: > > orig[0] = SNDRV_CTL_TLVT_DB_MINMAX; > orig[1] = 2 * sizeof(*orig); > orig[2] = -60; > orig[3] = +60; > > orig_container[0] = SNDRV_CTL_TLVT_CONTAINER; > orig_container[1] = 6 * sizeof(*orig_container); > orig_container[2] = SNDRV_CTL_TLVT_CHMAP_FIXED; > orig_container[3] = 4 * sizeof(*orig_container); > orig_container[4] = SNDRV_CHMAP_FL > orig_container[5] = SNDRV_CHMAP_FR; > orig_container[6] = SNDRV_CHMAP_FC; > orig_container[7] = SNDRV_CHMAP_LFE; Mmm. For user-defined control element sets, these macros should be in UAPI. SNDRV_CTL_IOCTL_ELEM_ADD was really long abandoned... Thanks Takashi Sakamoto _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
