2019-12-03 20:01:13 +00:00
From c79f09e1f5e8b559b58dacdb00708d995b2e3aa5 Mon Sep 17 00:00:00 2001
From: paulhsia <paulhsia@chromium.org>
Date: Sat, 30 Nov 2019 03:35:30 +0800
Subject: [PATCH 01/10] ucm: Use strncmp to avoid access-out-of-boundary
If the length of the identifier is less than the length of the prefix,
access-out-of-boundary will occur in memcmp().
Signed-off-by: paulhsia <paulhsia@chromium.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
src/ucm/main.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/ucm/main.c b/src/ucm/main.c
index b0b6ffb3..252e50d9 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -61,11 +61,13 @@ static int check_identifier(const char *identifier, const char *prefix)
{
int len;
- if (strcmp(identifier, prefix) == 0)
- return 1;
len = strlen(prefix);
- if (memcmp(identifier, prefix, len) == 0 && identifier[len] == '/')
+ if (strncmp(identifier, prefix, len) != 0)
+ return 0;
+
+ if (identifier[len] == 0 || identifier[len] == '/')
return 1;
+
return 0;
}
--
2.20.1
From 9baf64da2f26844434ecea4825052937a3abe06c Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Fri, 29 Nov 2019 22:28:26 +0100
Subject: [PATCH 02/10] ucm: return always at least NULL if no list is
available in snd_use_case_get_list()
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
src/ucm/main.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/ucm/main.c b/src/ucm/main.c
index 252e50d9..b80db65f 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -1160,8 +1160,10 @@ static int get_supcon_device_list(snd_use_case_mgr_t *uc_mgr,
modifier = find_modifier(uc_mgr, verb, name, 0);
if (modifier) {
- if (modifier->dev_list.type != type)
+ if (modifier->dev_list.type != type) {
+ *list = NULL;
return 0;
+ }
return get_list(&modifier->dev_list.list, list,
struct dev_list_node, list,
name);
@@ -1169,8 +1171,10 @@ static int get_supcon_device_list(snd_use_case_mgr_t *uc_mgr,
device = find_device(uc_mgr, verb, name, 0);
if (device) {
- if (device->dev_list.type != type)
+ if (device->dev_list.type != type) {
+ *list = NULL;
return 0;
+ }
return get_list(&device->dev_list.list, list,
struct dev_list_node, list,
name);
--
2.20.1
From ebdd2b6cdb8119cf75f0dd0a3b283d271b3a547e Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Sat, 30 Nov 2019 20:31:55 +0100
Subject: [PATCH 03/10] ucm: add _identifiers list
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
include/use-case.h | 1 +
src/ucm/main.c | 268 ++++++++++++++++++++++++++++++++++-----------
2 files changed, 208 insertions(+), 61 deletions(-)
diff --git a/include/use-case.h b/include/use-case.h
index 8e7e838c..85c58ac0 100644
--- a/include/use-case.h
+++ b/include/use-case.h
@@ -206,6 +206,7 @@ int snd_use_case_free_list(const char *list[], int items);
* - _enadevs - get list of enabled devices
* - _enamods - get list of enabled modifiers
*
+ * - _identifiers/{modifier}|{device}[/{verb}] - list of value identifiers
* - _supporteddevs/{modifier}|{device}[/{verb}] - list of supported devices
* - _conflictingdevs/{modifier}|{device}[/{verb}] - list of conflicting devices
*
diff --git a/src/ucm/main.c b/src/ucm/main.c
index b80db65f..d2078a23 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -1072,7 +1072,6 @@ int snd_use_case_mgr_reset(snd_use_case_mgr_t *uc_mgr)
/**
* \brief Get list of verbs in pair verbname+comment
* \param list Returned list
- * \param verbname For verb (NULL = current)
* \return Number of list entries if success, otherwise a negative error code
*/
static int get_verb_list(snd_use_case_mgr_t *uc_mgr, const char **list[])
@@ -1181,7 +1180,6 @@ static int get_supcon_device_list(snd_use_case_mgr_t *uc_mgr,
}
return -ENOENT;
-
}
/**
@@ -1210,41 +1208,201 @@ static int get_conflicting_device_list(snd_use_case_mgr_t *uc_mgr,
#ifndef DOC_HIDDEN
struct myvalue {
- struct list_head list;
- char *value;
+ struct list_head list;
+ const char *text;
};
#endif
+/**
+ * \brief Convert myvalue list string list
+ * \param list myvalue list
+ * \param res string list
+ * \retval Number of list entries if success, otherwise a negativer error code
+ */
+static int myvalue_to_str_list(struct list_head *list, char ***res)
+{
+ struct list_head *pos;
+ struct myvalue *value;
+ char **p;
+ int cnt;
+
+ cnt = alloc_str_list(list, 1, res);
+ if (cnt < 0)
+ return cnt;
+ p = *res;
+ list_for_each(pos, list) {
+ value = list_entry(pos, struct myvalue, list);
+ *p = strdup(value->text);
+ if (*p == NULL) {
+ snd_use_case_free_list((const char **)p, cnt);
+ return -ENOMEM;
+ }
+ p++;
+ }
+ return cnt;
+}
+
+/**
+ * \brief Free myvalue list
+ * \param list myvalue list
+ */
+static void myvalue_list_free(struct list_head *list)
+{
+ struct list_head *pos, *npos;
+ struct myvalue *value;
+
+ list_for_each_safe(pos, npos, list) {
+ value = list_entry(pos, struct myvalue, list);
+ list_del(&value->list);
+ free(value);
+ }
+}
+
+/**
+ * \brief Merge one value to the myvalue list
+ * \param list The list with values
+ * \param value The value to be merged (without duplicates)
+ * \return 1 if dup, 0 if success, otherwise a negative error code
+ */
+static int merge_value(struct list_head *list, const char *text)
+{
+ struct list_head *pos;
+ struct myvalue *value;
+
+ list_for_each(pos, list) {
+ value = list_entry(pos, struct myvalue, list);
+ if (strcmp(value->text, text) == 0)
+ return 1;
+ }
+ value = malloc(sizeof(*value));
+ if (value == NULL)
+ return -ENOMEM;
+ value->text = text;
+ list_add_tail(&value->list, list);
+ return 0;
+}
+
+/**
+ * \brief Find all values for given identifier
+ * \param list Returned list
+ * \param source Source list with ucm_value structures
+ * \return Zero if success, otherwise a negative error code
+ */
+static int add_identifiers(struct list_head *list,
+ struct list_head *source)
+{
+ struct ucm_value *v;
+ struct list_head *pos;
+ int err;
+
+ list_for_each(pos, source) {
+ v = list_entry(pos, struct ucm_value, list);
+ err = merge_value(list, v->name);
+ if (err < 0)
+ return err;
+ }
+ return 0;
+}
+
+/**
+ * \brief Find all values for given identifier
+ * \param list Returned list
+ * \param identifier Identifier
+ * \param source Source list with ucm_value structures
+ */
static int add_values(struct list_head *list,
const char *identifier,
struct list_head *source)
{
- struct ucm_value *v;
- struct myvalue *val;
- struct list_head *pos, *pos1;
- int match;
+ struct ucm_value *v;
+ struct list_head *pos;
+ int err;
- list_for_each(pos, source) {
- v = list_entry(pos, struct ucm_value, list);
- if (check_identifier(identifier, v->name)) {
- match = 0;
- list_for_each(pos1, list) {
- val = list_entry(pos1, struct myvalue, list);
- if (strcmp(val->value, v->data) == 0) {
- match = 1;
- break;
- }
- }
- if (!match) {
- val = malloc(sizeof(struct myvalue));
- if (val == NULL)
- return -ENOMEM;
- val->value = v->data;
- list_add_tail(&val->list, list);
- }
- }
- }
- return 0;
+ list_for_each(pos, source) {
+ v = list_entry(pos, struct ucm_value, list);
+ if (check_identifier(identifier, v->name)) {
+ err = merge_value(list, v->data);
+ if (err < 0)
+ return err;
+ }
+ }
+ return 0;
+}
+
+/**
+ * \brief compare two identifiers
+ */
+static int identifier_cmp(const void *_a, const void *_b)
+{
+ const char * const *a = _a;
+ const char * const *b = _b;
+ return strcmp(*a, *b);
+}
+
+/**
+ * \brief Get list of available identifiers
+ * \param list Returned list
+ * \param name Name of verb or modifier to query
+ * \return Number of list entries if success, otherwise a negative error code
+ */
+static int get_identifiers_list(snd_use_case_mgr_t *uc_mgr,
+ const char **list[], char *name)
+{
+ struct use_case_verb *verb;
+ struct use_case_modifier *modifier;
+ struct use_case_device *device;
+ struct list_head mylist;
+ struct list_head *value_list;
+ char *str, **res;
+ int err;
+
+ if (!name)
+ return -ENOENT;
+
+ str = strchr(name, '/');
+ if (str) {
+ *str = '\0';
+ verb = find_verb(uc_mgr, str + 1);
+ }
+ else {
+ verb = uc_mgr->active_verb;
+ }
+ if (!verb)
+ return -ENOENT;
+
+ value_list = NULL;
+ modifier = find_modifier(uc_mgr, verb, name, 0);
+ if (modifier) {
+ value_list = &modifier->value_list;
+ } else {
+ device = find_device(uc_mgr, verb, name, 0);
+ if (device)
+ value_list = &device->value_list;
+ }
+ if (value_list == NULL)
+ return -ENOENT;
+
+ INIT_LIST_HEAD(&mylist);
+ err = add_identifiers(&mylist, &uc_mgr->value_list);
+ if (err < 0)
+ goto __fail;
+ err = add_identifiers(&mylist, &verb->value_list);
+ if (err < 0)
+ goto __fail;
+ err = add_identifiers(&mylist, value_list);
+ if (err < 0)
+ goto __fail;
+ err = myvalue_to_str_list(&mylist, &res);
+ if (err > 0)
+ *list = (const char **)res;
+ else if (err == 0)
+ *list = NULL;
+__fail:
+ myvalue_list_free(&mylist);
+ if (err <= 0)
+ return err;
+ qsort(*list, err, sizeof(char *), identifier_cmp);
+ return err;
}
/**
@@ -1258,8 +1416,7 @@ static int get_value_list(snd_use_case_mgr_t *uc_mgr,
const char **list[],
char *verbname)
{
- struct list_head mylist, *pos, *npos;
- struct myvalue *val;
+ struct list_head mylist, *pos;
struct use_case_verb *verb;
struct use_case_device *dev;
struct use_case_modifier *mod;
@@ -1292,26 +1449,13 @@ static int get_value_list(snd_use_case_mgr_t *uc_mgr,
if (err < 0)
goto __fail;
}
- err = alloc_str_list(&mylist, 1, &res);
- if (err >= 0) {
+ err = myvalue_to_str_list(&mylist, &res);
+ if (err > 0)
*list = (const char **)res;
- list_for_each(pos, &mylist) {
- val = list_entry(pos, struct myvalue, list);
- *res = strdup(val->value);
- if (*res == NULL) {
- snd_use_case_free_list((const char **)res, err);
- err = -ENOMEM;
- goto __fail;
- }
- res++;
- }
- }
+ else if (err == 0)
+ *list = NULL;
__fail:
- list_for_each_safe(pos, npos, &mylist) {
- val = list_entry(pos, struct myvalue, list);
- list_del(&val->list);
- free(val);
- }
+ myvalue_list_free(&mylist);
return err;
}
@@ -1381,21 +1525,23 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
} else {
str = NULL;
}
- if (check_identifier(identifier, "_devices"))
- err = get_device_list(uc_mgr, list, str);
+ if (check_identifier(identifier, "_devices"))
+ err = get_device_list(uc_mgr, list, str);
else if (check_identifier(identifier, "_modifiers"))
- err = get_modifier_list(uc_mgr, list, str);
- else if (check_identifier(identifier, "_supporteddevs"))
- err = get_supported_device_list(uc_mgr, list, str);
- else if (check_identifier(identifier, "_conflictingdevs"))
- err = get_conflicting_device_list(uc_mgr, list, str);
+ err = get_modifier_list(uc_mgr, list, str);
+ else if (check_identifier(identifier, "_identifiers"))
+ err = get_identifiers_list(uc_mgr, list, str);
+ else if (check_identifier(identifier, "_supporteddevs"))
+ err = get_supported_device_list(uc_mgr, list, str);
+ else if (check_identifier(identifier, "_conflictingdevs"))
+ err = get_conflicting_device_list(uc_mgr, list, str);
else if (identifier[0] == '_')
err = -ENOENT;
- else
- err = get_value_list(uc_mgr, identifier, list, str);
- if (str)
- free(str);
- }
+ else
+ err = get_value_list(uc_mgr, identifier, list, str);
+ if (str)
+ free(str);
+ }
__end:
pthread_mutex_unlock(&uc_mgr->mutex);
return err;
--
2.20.1
From 5ee5ef31b5ff3fb7c904054cb9cac7478a727f7c Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Sun, 1 Dec 2019 14:26:40 +0100
Subject: [PATCH 04/10] namehint: correct the @args check
BugLink: https://github.com/alsa-project/alsa-plugins/issues/3
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
src/control/namehint.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/control/namehint.c b/src/control/namehint.c
index 808df6b5..4927ef97 100644
--- a/src/control/namehint.c
+++ b/src/control/namehint.c
@@ -348,6 +348,12 @@ static int try_config(snd_config_t *config,
goto __cleanup;
if (snd_config_search(res, "@args", &cfg) >= 0) {
snd_config_for_each(i, next, cfg) {
+ /* skip the argument list */
+ snd_config_get_id(snd_config_iterator_entry(i), &str);
+ while (*str && *str >= '0' && *str <= '9') str++;
+ if (*str == '\0')
+ continue;
+ /* the argument definition must have the default */
if (snd_config_search(snd_config_iterator_entry(i),
"default", NULL) < 0) {
err = -EINVAL;
--
2.20.1
From 6055f8a584296abfc0cec0439ceb708f0eddcc9d Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Sun, 1 Dec 2019 14:30:54 +0100
Subject: [PATCH 05/10] namehint: improve the previous patch (check the
returned value)
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
src/control/namehint.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/control/namehint.c b/src/control/namehint.c
index 4927ef97..60c48ae3 100644
--- a/src/control/namehint.c
+++ b/src/control/namehint.c
@@ -349,7 +349,8 @@ static int try_config(snd_config_t *config,
if (snd_config_search(res, "@args", &cfg) >= 0) {
snd_config_for_each(i, next, cfg) {
/* skip the argument list */
- snd_config_get_id(snd_config_iterator_entry(i), &str);
+ if (snd_config_get_id(snd_config_iterator_entry(i), &str) < 0)
+ continue;
while (*str && *str >= '0' && *str <= '9') str++;
if (*str == '\0')
continue;
--
2.20.1
From 4dddcf733d56a13f4d042fefa1fb6230c09f1f65 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Mon, 2 Dec 2019 11:56:30 +0100
Subject: [PATCH 06/10] ucm: docs - allow spaces in device names for JackHWMute
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
include/use-case.h | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/include/use-case.h b/include/use-case.h
index 85c58ac0..e1f58027 100644
--- a/include/use-case.h
+++ b/include/use-case.h
@@ -326,7 +326,7 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* - Valid values: "soft" (software attenuation)
* - EDIDFile
* - Path to EDID file for HDMI devices
- * - JackControl, JackDev, JackHWMute
+ * - JackControl, JackDev
* - Jack information for a device. The jack status can be reported via
* a kcontrol and/or via an input device. **JackControl** is the
* kcontrol name of the jack, and **JackDev** is the input device id of
@@ -334,17 +334,18 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* JackDev value should be "foo"). UCM configuration files should
* contain both JackControl and JackDev when possible, because
* applications are likely to support only one or the other.
- *
- * If **JackHWMute** is set, it indicates that when the jack is plugged
- * in, the hardware automatically mutes some other device(s). The
- * JackHWMute value is a space-separated list of device names (this
- * isn't compatible with device names with spaces in them, so don't use
- * such device names!). Note that JackHWMute should be used only when
- * the hardware enforces the automatic muting. If the hardware doesn't
- * enforce any muting, it may still be tempting to set JackHWMute to
- * trick upper software layers to e.g. automatically mute speakers when
- * headphones are plugged in, but that's application policy
- * configuration that doesn't belong to UCM configuration files.
+ * - JackHWMute
+ * If this value is set, it indicates that when the jack is plugged
+ * in, the hardware automatically mutes some other device(s). The
+ * value is a space-separated list of device names. If the device
+ * name contains space, it must be enclosed to ' or ", e.g.:
+ * JackHWMute "'Dock Headphone' Headphone"
+ * Note that JackHWMute should be used only when the hardware enforces
+ * the automatic muting. If the hardware doesn't enforce any muting, it
+ * may still be tempting to set JackHWMute to trick upper software layers
+ * to e.g. automatically mute speakers when headphones are plugged in,
+ * but that's application policy configuration that doesn't belong
+ * to UCM configuration files.
* - MinBufferLevel
* - This is used on platform where reported buffer level is not accurate.
* E.g. "512", which holds 512 samples in device buffer. Note: this will
--
2.20.1
From 2a286ca9a8415571181ce58027686ec332a834e9 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Mon, 2 Dec 2019 11:57:18 +0100
Subject: [PATCH 07/10] use-case: docs - add PlaybackMixerCopy and
CaptureMixerCopy
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
include/use-case.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/use-case.h b/include/use-case.h
index e1f58027..71fcc949 100644
--- a/include/use-case.h
+++ b/include/use-case.h
@@ -309,8 +309,14 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* - PlaybackMixerElem
* - mixer element playback identifier
* - can be parsed using snd_use_case_parse_selem_id()
+ * - PlaybackMixerCopy
+ * - additional mixer element playback identifier
+ * - can be parsed using snd_use_case_parse_selem_id()
+ * - those elements should copy the volume and switch settings
+ * - element identifiers are separated using the | character
* - PlaybackMasterElem
* - mixer element playback identifier for the master control
+ * - can be parsed using snd_use_case_parse_selem_id()
* - PlaybackMasterType
* - type of the master volume control
* - Valid values: "soft" (software attenuation)
@@ -319,8 +325,14 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* - CaptureMixerElem
* - mixer element capture identifier
* - can be parsed using snd_use_case_parse_selem_id()
+ * - CaptureMixerCopy
+ * - additional mixer element capture identifier
+ * - can be parsed using snd_use_case_parse_selem_id()
+ * - those elements should copy the volume and switch settings
+ * - element identifiers are separated using the | character
* - CaptureMasterElem
* - mixer element playback identifier for the master control
+ * - can be parsed using snd_use_case_parse_selem_id()
* - CaptureMasterType
* - type of the master volume control
* - Valid values: "soft" (software attenuation)
--
2.20.1
From a0fc4447bb7c7f9a850a0a85f3a5a32c1509caf4 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Tue, 3 Dec 2019 15:01:04 +0100
Subject: [PATCH 08/10] ucm: docs - add JackCTL, rearrange JackControl and
JackDev
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
include/use-case.h | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/include/use-case.h b/include/use-case.h
index 71fcc949..25998cb9 100644
--- a/include/use-case.h
+++ b/include/use-case.h
@@ -338,14 +338,20 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* - Valid values: "soft" (software attenuation)
* - EDIDFile
* - Path to EDID file for HDMI devices
- * - JackControl, JackDev
- * - Jack information for a device. The jack status can be reported via
- * a kcontrol and/or via an input device. **JackControl** is the
- * kcontrol name of the jack, and **JackDev** is the input device id of
- * the jack (if the full input device path is /dev/input/by-id/foo, the
- * JackDev value should be "foo"). UCM configuration files should
- * contain both JackControl and JackDev when possible, because
- * applications are likely to support only one or the other.
+ * - JackCTL
+ * - jack control device name
+ * - JackControl
+ * - jack control identificator
+ * - can be parsed using snd_use_case_parse_ctl_elem_id()
+ * - UCM configuration files should contain both JackControl and JackDev
+ * when possible, because applications are likely to support only one
+ * or the other
+ * - JackDev
+ * - the input device id of the jack (if the full input device path is
+ * /dev/input/by-id/foo, the JackDev value should be "foo")
+ * - UCM configuration files should contain both JackControl and JackDev
+ * when possible, because applications are likely to support only one
+ * or the other
* - JackHWMute
* If this value is set, it indicates that when the jack is plugged
* in, the hardware automatically mutes some other device(s). The
--
2.20.1
From e59034a0bec257cc7422a1e9436d936be8696a6f Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Tue, 3 Dec 2019 18:27:39 +0100
Subject: [PATCH 09/10] ucm: Do not fail to parse configs on cards with an
empty CardComponents lists
Since the UCM profiles for all Bay- and Cherry-Trail SST cards have been
moved over to UCM2, parsing them fails with:
ALSA lib ucm_subs.c:220:(uc_mgr_get_substituted_value) variable '${CardComponents}' is not defined in this context!
This completely breaks audio support on all Bay- and Cherry-Trail devices.
This is caused by these non-SOF ASoC using cards having an empty
CardComponents list. Which in itself is fine, but is rejected by
the ucm_subs.c code. This commit changes the ucm_subs code to accept
an empty string as a valid value for CardComponents restoring audio
functionality on these boards.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
src/ucm/ucm_subs.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/src/ucm/ucm_subs.c b/src/ucm/ucm_subs.c
index 00afa9e3..90e395f0 100644
--- a/src/ucm/ucm_subs.c
+++ b/src/ucm/ucm_subs.c
@@ -25,6 +25,7 @@
*/
#include "ucm_local.h"
+#include <stdbool.h>
#include <sys/stat.h>
#include <limits.h>
@@ -145,10 +146,11 @@ static char *rval_sysfs(snd_use_case_mgr_t *uc_mgr ATTRIBUTE_UNUSED, const char
return strdup(path);
}
-#define MATCH_VARIABLE(name, id, fcn) \
+#define MATCH_VARIABLE(name, id, fcn, empty_ok) \
if (strncmp((name), (id), sizeof(id) - 1) == 0) { \
rval = fcn(uc_mgr); \
idsize = sizeof(id) - 1; \
+ allow_empty = (empty_ok); \
goto __rval; \
}
@@ -189,12 +191,14 @@ int uc_mgr_get_substituted_value(snd_use_case_mgr_t *uc_mgr,
while (*value) {
if (*value == '$' && *(value+1) == '{') {
- MATCH_VARIABLE(value, "${ConfName}", rval_conf_name);
- MATCH_VARIABLE(value, "${CardId}", rval_card_id);
- MATCH_VARIABLE(value, "${CardDriver}", rval_card_driver);
- MATCH_VARIABLE(value, "${CardName}", rval_card_name);
- MATCH_VARIABLE(value, "${CardLongName}", rval_card_longname);
- MATCH_VARIABLE(value, "${CardComponents}", rval_card_components);
+ bool allow_empty = false;
+
+ MATCH_VARIABLE(value, "${ConfName}", rval_conf_name, false);
+ MATCH_VARIABLE(value, "${CardId}", rval_card_id, false);
+ MATCH_VARIABLE(value, "${CardDriver}", rval_card_driver, false);
+ MATCH_VARIABLE(value, "${CardName}", rval_card_name, false);
+ MATCH_VARIABLE(value, "${CardLongName}", rval_card_longname, false);
+ MATCH_VARIABLE(value, "${CardComponents}", rval_card_components, true);
MATCH_VARIABLE2(value, "${env:", rval_env);
MATCH_VARIABLE2(value, "${sys:", rval_sysfs);
err = -EINVAL;
@@ -208,7 +212,7 @@ int uc_mgr_get_substituted_value(snd_use_case_mgr_t *uc_mgr,
}
goto __error;
__rval:
- if (rval == NULL || rval[0] == '\0') {
+ if (rval == NULL || (!allow_empty && rval[0] == '\0')) {
free(rval);
strncpy(r, value, idsize);
r[idsize] = '\0';
--
2.20.1
From 8e2c70add782f997f7c269ed3f722888e56ff024 Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Tue, 3 Dec 2019 18:56:40 +0100
Subject: [PATCH 10/10] src/ucm/main.c: fix build without mixer
Commit 4ce38a5ff466d18039b2606938f866ea3a6c9f3c breaks the build without
mixer on:
CCLD libasound.la
/home/buildroot/autobuild/instance-1/output-1/host/lib/gcc/xtensa-buildroot-linux-uclibc/8.3.0/../../../../xtensa-buildroot-linux-uclibc/bin/ld: ucm/.libs/libucm.a(main.o): in function `snd_use_case_set':
main.c:(.text+0x185c): undefined reference to `snd_mixer_selem_id_parse'
Fixes: http://autobuild.buildroot.org/results/4d91c9f82a2a61c50c457a851073b85cc09ea345
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
src/ucm/main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/ucm/main.c b/src/ucm/main.c
index d2078a23..61922f10 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -2115,8 +2115,10 @@ int snd_use_case_parse_selem_id(snd_mixer_selem_id_t *dst,
const char *ucm_id,
const char *value)
{
+#ifdef BUILD_MIXER
if (strcmp(ucm_id, "PlaybackMixerId") == 0 ||
strcmp(ucm_id, "CaptureMixerId") == 0)
return snd_mixer_selem_id_parse(dst, value);
+#endif
return -EINVAL;
}
--
2.20.1
