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ucm: add binary configure file parse

PATCH In review [email protected] 2 participants 2 messages Jan 15, 2015

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#0 lore raw

PATCH 1/1 ucm: add binary configure file parse

From: "Lu, Han" <[email protected]>

with cset command, UCM set kcontrol parameters directly:

    cset "name='<KCONTROL_NAME>' 1<,2,3,...>"
This patch enables UCM to set kcontrol with parameters from
configure file:
    cset-bin-file "name='<KCONTROL_NAME>' <path/to/file>"

where "cset-bin-file" is a newly added keyword alongside of "cset", to indicate cset with binary data in file.
The binary data is parameter only for audio DSPs, and it's just passed by UCM/ALSA as raw data. The data type of the parameter element must be byte, and the maxim number of parameter elements is 512 (the maxim value that struct snd_ctl_elem_value can hold).

Signed-off-by Lu, Han <[email protected]>
src/ucm/main.c +41 -3
index 37ae4c8..d2b1e15 100644
@@ -160,11 +160,45 @@ static int open_ctl(snd_use_case_mgr_t *uc_mgr,
 	return 0;
 }
 
+static int binary_file_parse(snd_ctl_elem_value_t *dst,
+			      const char *filepath)
+{
+	int err = 0;
+	FILE *in;
+	long len;
+	char *res;
+	unsigned int idx;
+
+	in = fopen(filepath, "r");
+	if (!in) {
+		err = -errno;
+		goto __fail;
+	}
+	fseek(in, 0L, SEEK_END);
+	len = ftell(in);
+	rewind(in);
+	if (len > 512)
+		len = 512;
+	res = calloc(1, (size_t)len);
+	if (res == NULL) {
+		err = -ENOMEM;
+		goto __fail_nomem;
+	}
+	fread(res, (size_t)len, 1, in);
+	for (idx = 0; idx < len; idx++)
+		snd_ctl_elem_value_set_byte(dst, idx, *(res + idx));
+	free(res);
+      __fail_nomem:
+	fclose(in);
+      __fail:
+	return err;
+}
+
 extern int __snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst,
 					 const char *str,
 					 const char **ret_ptr);
 
-static int execute_cset(snd_ctl_t *ctl, const char *cset)
+static int execute_cset(snd_ctl_t *ctl, const char *cset, int isbin)
 {
 	const char *pos;
 	int err;

@@ -194,7 +228,10 @@ static int execute_cset(snd_ctl_t *ctl, const char *cset)
 	err = snd_ctl_elem_info(ctl, info);
 	if (err < 0)
 		goto __fail;
-	err = snd_ctl_ascii_value_parse(ctl, value, info, pos);
+	if (isbin)
+		err = binary_file_parse(value, pos);
+	else
+		err = snd_ctl_ascii_value_parse(ctl, value, info, pos);
 	if (err < 0)
 		goto __fail;
 	err = snd_ctl_elem_write(ctl, value);

@@ -239,6 +276,7 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
 				goto __fail_nomem;
 			break;
 		case SEQUENCE_ELEMENT_TYPE_CSET:
+		case SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE:
 			if (cdev == NULL) {
 				const char *cdev1 = NULL, *cdev2 = NULL;
 				err = get_value3(&cdev1, "PlaybackCTL",

@@ -274,7 +312,7 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
 					goto __fail;
 				}
 			}
-			err = execute_cset(ctl, s->data.cset);
+			err = execute_cset(ctl, s->data.cset, s->isbin);
 			if (err < 0) {
 				uc_error("unable to execute cset '%s'\n", s->data.cset);
 				goto __fail;
src/ucm/parser.c +11 -0
index d7517f6..fb5a033 100644
@@ -306,6 +306,17 @@ static int parse_sequence(snd_use_case_mgr_t *uc_mgr ATTRIBUTE_UNUSED,
 			continue;
 		}
 
+		if (strcmp(cmd, "cset-bin-file") == 0) {
+			curr->type = SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE;
+			curr->isbin = 1;
+			err = parse_string(n, &curr->data.cset);
+			if (err < 0) {
+				uc_error("error: cset-bin-file requires a string!");
+				return err;
+			}
+			continue;
+		}
+
 		if (strcmp(cmd, "usleep") == 0) {
 			curr->type = SEQUENCE_ELEMENT_TYPE_SLEEP;
 			err = snd_config_get_integer(n, &curr->data.sleep);
src/ucm/ucm_local.h +2 -0
index 87f14a2..d0a609b 100644
@@ -47,6 +47,7 @@
 #define SEQUENCE_ELEMENT_TYPE_CSET	2
 #define SEQUENCE_ELEMENT_TYPE_SLEEP	3
 #define SEQUENCE_ELEMENT_TYPE_EXEC	4
+#define SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE	5
 
 struct ucm_value {
         struct list_head list;

@@ -63,6 +64,7 @@ struct sequence_element {
 		char *cset;
 		char *exec;
 	} data;
+	int isbin;          /* Indicate cset to handle binary or ascii array */
 };
 
 /*
Signature · 1 line
1.9.1
#1 lore raw

At Thu, 15 Jan 2015 09:26:28 +0800,

Quoted 32 lines · [email protected] wrote:

From: "Lu, Han" <[email protected]>

with cset command, UCM set kcontrol parameters directly:

    cset "name='<KCONTROL_NAME>' 1<,2,3,...>"
This patch enables UCM to set kcontrol with parameters from
configure file:
    cset-bin-file "name='<KCONTROL_NAME>' <path/to/file>"

where "cset-bin-file" is a newly added keyword alongside of "cset", to indicate cset with binary data in file.
The binary data is parameter only for audio DSPs, and it's just passed by UCM/ALSA as raw data. The data type of the parameter element must be byte, and the maxim number of parameter elements is 512 (the maxim value that struct snd_ctl_elem_value can hold).

Signed-off-by Lu, Han <[email protected]>
src/ucm/main.c +7 -0
index 37ae4c8..d2b1e15 100644
@@ -160,11 +160,45 @@ static int open_ctl(snd_use_case_mgr_t *uc_mgr,
 	return 0;
 }
 
+static int binary_file_parse(snd_ctl_elem_value_t *dst,
+			      const char *filepath)
+{
+	int err = 0;
+	FILE *in;
+	long len;
+	char *res;

src/ucm/main.c static int open_ctl(snd_use_case_mgr_t *uc_mgr, · line 179

Quoted 10 lines
src/ucm/main.c +10 -0
+	unsigned int idx;
+
+	in = fopen(filepath, "r");
+	if (!in) {
+		err = -errno;
+		goto __fail;
+	}
+	fseek(in, 0L, SEEK_END);
+	len = ftell(in);
+	rewind(in);

There is a better way to identify the length of a file. Also, for reading a file as a chunk, no need to use the buffered access.

src/ucm/main.c static int open_ctl(snd_use_case_mgr_t *uc_mgr, · line 189

Quoted 10 lines
src/ucm/main.c +10 -0
+	if (len > 512)
+		len = 512;
+	res = calloc(1, (size_t)len);
+	if (res == NULL) {
+		err = -ENOMEM;
+		goto __fail_nomem;
+	}
+	fread(res, (size_t)len, 1, in);
+	for (idx = 0; idx < len; idx++)
+		snd_ctl_elem_value_set_byte(dst, idx, *(res + idx));

What if the ctl element isn't a binary type?

Quoted 37 lines
src/ucm/main.c +13 -2
+	free(res);
+      __fail_nomem:
+	fclose(in);
+      __fail:
+	return err;
+}
+
 extern int __snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst,
 					 const char *str,
 					 const char **ret_ptr);
 
-static int execute_cset(snd_ctl_t *ctl, const char *cset)
+static int execute_cset(snd_ctl_t *ctl, const char *cset, int isbin)
 {
 	const char *pos;
 	int err;

@@ -194,7 +228,10 @@ static int execute_cset(snd_ctl_t *ctl, const char *cset)
 	err = snd_ctl_elem_info(ctl, info);
 	if (err < 0)
 		goto __fail;
-	err = snd_ctl_ascii_value_parse(ctl, value, info, pos);
+	if (isbin)
+		err = binary_file_parse(value, pos);
+	else
+		err = snd_ctl_ascii_value_parse(ctl, value, info, pos);
 	if (err < 0)
 		goto __fail;
 	err = snd_ctl_elem_write(ctl, value);

@@ -239,6 +276,7 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
 				goto __fail_nomem;
 			break;
 		case SEQUENCE_ELEMENT_TYPE_CSET:
+		case SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE:
 			if (cdev == NULL) {
 				const char *cdev1 = NULL, *cdev2 = NULL;
 				err = get_value3(&cdev1, "PlaybackCTL",

src/ucm/main.c static int execute_sequence(snd_use_case_mgr_t *uc_mgr, · line 315

Quoted 5 lines
src/ucm/main.c +1 -1
@@ -274,7 +312,7 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
 					goto __fail;
 				}
 			}
-			err = execute_cset(ctl, s->data.cset);
+			err = execute_cset(ctl, s->data.cset, s->isbin);

isbin doesn't have to be a struct member at all since it's referred only here can be identified via s->type.

Takashi

Quoted 48 lines
src/ucm/main.c +0 -0
 			if (err < 0) {
 				uc_error("unable to execute cset '%s'\n", s->data.cset);
 				goto __fail;
src/ucm/parser.c +11 -0
index d7517f6..fb5a033 100644
@@ -306,6 +306,17 @@ static int parse_sequence(snd_use_case_mgr_t *uc_mgr ATTRIBUTE_UNUSED,
 			continue;
 		}
 
+		if (strcmp(cmd, "cset-bin-file") == 0) {
+			curr->type = SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE;
+			curr->isbin = 1;
+			err = parse_string(n, &curr->data.cset);
+			if (err < 0) {
+				uc_error("error: cset-bin-file requires a string!");
+				return err;
+			}
+			continue;
+		}
+
 		if (strcmp(cmd, "usleep") == 0) {
 			curr->type = SEQUENCE_ELEMENT_TYPE_SLEEP;
 			err = snd_config_get_integer(n, &curr->data.sleep);
src/ucm/ucm_local.h +2 -0
index 87f14a2..d0a609b 100644
@@ -47,6 +47,7 @@
 #define SEQUENCE_ELEMENT_TYPE_CSET	2
 #define SEQUENCE_ELEMENT_TYPE_SLEEP	3
 #define SEQUENCE_ELEMENT_TYPE_EXEC	4
+#define SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE	5
 
 struct ucm_value {
         struct list_head list;

@@ -63,6 +64,7 @@ struct sequence_element {
 		char *cset;
 		char *exec;
 	} data;
+	int isbin;          /* Indicate cset to handle binary or ascii array */
 };
 
 /*
Signature · 1 line
1.9.1