[alsa-devel] [PATCH] control: Allow cset'ing specific values in the multi-value case
From: Arun Raghavan git@arunraghavan.net
This works with syntax like ...
amixer cset 'IIR1 Band1' ,,200
... to set the third value of the control to 200. --- src/control/ctlparse.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/control/ctlparse.c b/src/control/ctlparse.c index 8d6c385..64c6480 100644 --- a/src/control/ctlparse.c +++ b/src/control/ctlparse.c @@ -48,9 +48,9 @@ static inline long int convert_prange1(long val, long min, long max) #define check_range(val, min, max) \ ((val < min) ? (min) : ((val > max) ? (max) : (val)))
-static long get_integer(const char **ptr, long min, long max) +static long get_integer(const char **ptr, long def, long min, long max) { - long val = min; + long val = def; char *p = (char *)*ptr, *s;
if (*p == ':') @@ -351,6 +351,8 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, break; case SND_CTL_ELEM_TYPE_INTEGER: tmp = get_integer(&ptr, + snd_ctl_elem_value_get_integer(dst, + idx), snd_ctl_elem_info_get_min(info), snd_ctl_elem_info_get_max(info)); snd_ctl_elem_value_set_integer(dst, idx, tmp); @@ -364,12 +366,12 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = get_ctl_enum_item_index(handle, info, &ptr); if (tmp < 0) - tmp = get_integer(&ptr, 0, + tmp = get_integer(&ptr, 0, 0, snd_ctl_elem_info_get_items(info) - 1); snd_ctl_elem_value_set_enumerated(dst, idx, tmp); break; case SND_CTL_ELEM_TYPE_BYTES: - tmp = get_integer(&ptr, 0, 255); + tmp = get_integer(&ptr, 0, 0, 255); snd_ctl_elem_value_set_byte(dst, idx, tmp); break; default:
At Tue, 9 Jun 2015 16:25:07 +0530, arun@accosted.net wrote:
From: Arun Raghavan git@arunraghavan.net
This works with syntax like ...
amixer cset 'IIR1 Band1' ,,200
... to set the third value of the control to 200.
src/control/ctlparse.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/control/ctlparse.c b/src/control/ctlparse.c index 8d6c385..64c6480 100644 --- a/src/control/ctlparse.c +++ b/src/control/ctlparse.c @@ -48,9 +48,9 @@ static inline long int convert_prange1(long val, long min, long max) #define check_range(val, min, max) \ ((val < min) ? (min) : ((val > max) ? (max) : (val)))
-static long get_integer(const char **ptr, long min, long max) +static long get_integer(const char **ptr, long def, long min, long max) {
- long val = min;
long val = def; char *p = (char *)*ptr, *s;
if (*p == ':')
@@ -351,6 +351,8 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, break; case SND_CTL_ELEM_TYPE_INTEGER: tmp = get_integer(&ptr,
snd_ctl_elem_value_get_integer(dst,
idx), snd_ctl_elem_info_get_min(info), snd_ctl_elem_info_get_max(info)); snd_ctl_elem_value_set_integer(dst, idx, tmp);
@@ -364,12 +366,12 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = get_ctl_enum_item_index(handle, info, &ptr); if (tmp < 0)
tmp = get_integer(&ptr, 0,
case SND_CTL_ELEM_TYPE_BYTES:tmp = get_integer(&ptr, 0, 0, snd_ctl_elem_info_get_items(info) - 1); snd_ctl_elem_value_set_enumerated(dst, idx, tmp); break;
tmp = get_integer(&ptr, 0, 255);
tmp = get_integer(&ptr, 0, 0, 255); snd_ctl_elem_value_set_byte(dst, idx, tmp); break;
Hmm, if it's just about skipping the empty element, how about the patch below instead?
thanks,
Takashi
--- diff --git a/src/control/ctlparse.c b/src/control/ctlparse.c index 8d6c3859bec4..877a05e3a1f1 100644 --- a/src/control/ctlparse.c +++ b/src/control/ctlparse.c @@ -325,6 +325,8 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, snd_ctl_elem_value_set_id(dst, myid); for (idx = 0; idx < count && idx < 128 && ptr && *ptr; idx++) { + if (*ptr == ',') + goto skip; switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: tmp = 0; @@ -375,6 +377,7 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, default: break; } + skip: if (!strchr(value, ',')) ptr = value; else if (*ptr == ',')
On 9 June 2015 at 17:33, Takashi Iwai tiwai@suse.de wrote:
At Tue, 9 Jun 2015 16:25:07 +0530, arun@accosted.net wrote:
From: Arun Raghavan git@arunraghavan.net
This works with syntax like ...
amixer cset 'IIR1 Band1' ,,200
... to set the third value of the control to 200.
src/control/ctlparse.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/control/ctlparse.c b/src/control/ctlparse.c index 8d6c385..64c6480 100644 --- a/src/control/ctlparse.c +++ b/src/control/ctlparse.c @@ -48,9 +48,9 @@ static inline long int convert_prange1(long val, long min, long max) #define check_range(val, min, max) \ ((val < min) ? (min) : ((val > max) ? (max) : (val)))
-static long get_integer(const char **ptr, long min, long max) +static long get_integer(const char **ptr, long def, long min, long max) {
long val = min;
long val = def; char *p = (char *)*ptr, *s; if (*p == ':')
@@ -351,6 +351,8 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, break; case SND_CTL_ELEM_TYPE_INTEGER: tmp = get_integer(&ptr,
snd_ctl_elem_value_get_integer(dst,
idx), snd_ctl_elem_info_get_min(info), snd_ctl_elem_info_get_max(info)); snd_ctl_elem_value_set_integer(dst, idx, tmp);
@@ -364,12 +366,12 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = get_ctl_enum_item_index(handle, info, &ptr); if (tmp < 0)
tmp = get_integer(&ptr, 0,
tmp = get_integer(&ptr, 0, 0, snd_ctl_elem_info_get_items(info) - 1); snd_ctl_elem_value_set_enumerated(dst, idx, tmp); break; case SND_CTL_ELEM_TYPE_BYTES:
tmp = get_integer(&ptr, 0, 255);
tmp = get_integer(&ptr, 0, 0, 255); snd_ctl_elem_value_set_byte(dst, idx, tmp); break;
Hmm, if it's just about skipping the empty element, how about the patch below instead?
Thanks, this works and does look better.
Cheers, Arun
diff --git a/src/control/ctlparse.c b/src/control/ctlparse.c index 8d6c3859bec4..877a05e3a1f1 100644 --- a/src/control/ctlparse.c +++ b/src/control/ctlparse.c @@ -325,6 +325,8 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, snd_ctl_elem_value_set_id(dst, myid);
for (idx = 0; idx < count && idx < 128 && ptr && *ptr; idx++) {
if (*ptr == ',')
goto skip; switch (type) { case SND_CTL_ELEM_TYPE_BOOLEAN: tmp = 0;
@@ -375,6 +377,7 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, default: break; }
skip: if (!strchr(value, ',')) ptr = value; else if (*ptr == ',')
At Wed, 10 Jun 2015 14:26:48 +0530, Arun Raghavan wrote:
On 9 June 2015 at 17:33, Takashi Iwai tiwai@suse.de wrote:
At Tue, 9 Jun 2015 16:25:07 +0530, arun@accosted.net wrote:
From: Arun Raghavan git@arunraghavan.net
This works with syntax like ...
amixer cset 'IIR1 Band1' ,,200
... to set the third value of the control to 200.
src/control/ctlparse.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/control/ctlparse.c b/src/control/ctlparse.c index 8d6c385..64c6480 100644 --- a/src/control/ctlparse.c +++ b/src/control/ctlparse.c @@ -48,9 +48,9 @@ static inline long int convert_prange1(long val, long min, long max) #define check_range(val, min, max) \ ((val < min) ? (min) : ((val > max) ? (max) : (val)))
-static long get_integer(const char **ptr, long min, long max) +static long get_integer(const char **ptr, long def, long min, long max) {
long val = min;
long val = def; char *p = (char *)*ptr, *s; if (*p == ':')
@@ -351,6 +351,8 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, break; case SND_CTL_ELEM_TYPE_INTEGER: tmp = get_integer(&ptr,
snd_ctl_elem_value_get_integer(dst,
idx), snd_ctl_elem_info_get_min(info), snd_ctl_elem_info_get_max(info)); snd_ctl_elem_value_set_integer(dst, idx, tmp);
@@ -364,12 +366,12 @@ int snd_ctl_ascii_value_parse(snd_ctl_t *handle, case SND_CTL_ELEM_TYPE_ENUMERATED: tmp = get_ctl_enum_item_index(handle, info, &ptr); if (tmp < 0)
tmp = get_integer(&ptr, 0,
tmp = get_integer(&ptr, 0, 0, snd_ctl_elem_info_get_items(info) - 1); snd_ctl_elem_value_set_enumerated(dst, idx, tmp); break; case SND_CTL_ELEM_TYPE_BYTES:
tmp = get_integer(&ptr, 0, 255);
tmp = get_integer(&ptr, 0, 0, 255); snd_ctl_elem_value_set_byte(dst, idx, tmp); break;
Hmm, if it's just about skipping the empty element, how about the patch below instead?
Thanks, this works and does look better.
Pushed to git tree now. Thanks.
Takashi
participants (3)
-
Arun Raghavan
-
arun@accosted.net
-
Takashi Iwai