Takashi Sakamoto wrote: > On Aug 30 2016 14:32, Takashi Iwai wrote: >> Takashi Sakamoto wrote: >>> - orig[0] = snd_ctl_elem_id_get_numid(trial->id); >>> + orig[0] = SNDRV_CTL_TLVT_CONTAINER; >>> orig[1] = 6 * sizeof(orig[0]); >>> orig[2] = 'a'; >>> orig[3] = 'b'; >> >> The container TLV type expects other TLVs as its content. So the >> above looks buggy to me... > > This is a test program just to serve to myself. So I hope this degree of roughness is allowed... > > Or could you please construct valid TLV array here? 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; Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
