audio: extend platform parser
Extend platform parser with support for additional sections.
Supported sections now include acdb ids, pcm device ids and backend names.
Change-Id: Idfbc8a8bb490606686436c107db5b0c7d636ccbe
diff --git a/hal/platform_info.c b/hal/platform_info.c
index 409c396..832c0f0 100644
--- a/hal/platform_info.c
+++ b/hal/platform_info.c
@@ -27,7 +27,137 @@
#define PLATFORM_INFO_XML_PATH "/system/etc/audio_platform_info.xml"
-static void process_device(const XML_Char **attr)
+typedef enum {
+ ROOT,
+ ACDB,
+ PCM_ID,
+ BACKEND_NAME,
+} section_t;
+
+typedef void (* section_process_fn)(const XML_Char **attr);
+
+static void process_acdb_id(const XML_Char **attr);
+static void process_pcm_id(const XML_Char **attr);
+static void process_backend_name(const XML_Char **attr);
+static void process_root(const XML_Char **attr);
+
+static section_process_fn section_table[] = {
+ [ROOT] = process_root,
+ [ACDB] = process_acdb_id,
+ [PCM_ID] = process_pcm_id,
+ [BACKEND_NAME] = process_backend_name,
+};
+
+static section_t section;
+
+/*
+ * <audio_platform_info>
+ * <acdb_ids>
+ * <device name="???" acdb_id="???"/>
+ * ...
+ * ...
+ * </acdb_ids>
+ * <backend_names>
+ * <device name="???" backend="???"/>
+ * ...
+ * ...
+ * </backend_names>
+ * <pcm_ids>
+ * <usecase name="???" type="in/out" id="???"/>
+ * ...
+ * ...
+ * </pcm_ids>
+ * </audio_platform_info>
+ */
+
+static void process_root(const XML_Char **attr __unused)
+{
+}
+
+/* mapping from usecase to pcm dev id */
+static void process_pcm_id(const XML_Char **attr)
+{
+ int index;
+
+ if (strcmp(attr[0], "name") != 0) {
+ ALOGE("%s: 'name' not found, no ACDB ID set!", __func__);
+ goto done;
+ }
+
+ index = platform_get_usecase_index((char *)attr[1]);
+ if (index < 0) {
+ ALOGE("%s: usecase %s in %s not found!",
+ __func__, attr[1], PLATFORM_INFO_XML_PATH);
+ goto done;
+ }
+
+ if (strcmp(attr[2], "type") != 0) {
+ ALOGE("%s: usecase type not mentioned", __func__);
+ goto done;
+ }
+
+ int type = -1;
+
+ if (!strcasecmp((char *)attr[3], "in")) {
+ type = 1;
+ } else if (!strcasecmp((char *)attr[3], "out")) {
+ type = 0;
+ } else {
+ ALOGE("%s: type must be IN or OUT", __func__);
+ goto done;
+ }
+
+ if (strcmp(attr[4], "id") != 0) {
+ ALOGE("%s: usecase id not mentioned", __func__);
+ goto done;
+ }
+
+ int id = atoi((char *)attr[5]);
+
+ if (platform_set_usecase_pcm_id(index, type, id) < 0) {
+ ALOGE("%s: usecase %s in %s, type %d id %d was not set!",
+ __func__, attr[1], PLATFORM_INFO_XML_PATH, type, id);
+ goto done;
+ }
+
+done:
+ return;
+}
+
+/* backend to be used for a device */
+static void process_backend_name(const XML_Char **attr)
+{
+ int index;
+
+ if (strcmp(attr[0], "name") != 0) {
+ ALOGE("%s: 'name' not found, no ACDB ID set!", __func__);
+ goto done;
+ }
+
+ index = platform_get_snd_device_index((char *)attr[1]);
+ if (index < 0) {
+ ALOGE("%s: Device %s in %s not found, no ACDB ID set!",
+ __func__, attr[1], PLATFORM_INFO_XML_PATH);
+ goto done;
+ }
+
+ if (strcmp(attr[2], "backend") != 0) {
+ ALOGE("%s: Device %s in %s has no backed set!",
+ __func__, attr[1], PLATFORM_INFO_XML_PATH);
+ goto done;
+ }
+
+ if (platform_set_snd_device_backend(index, attr[3]) < 0) {
+ ALOGE("%s: Device %s in %s, backend %s was not set!",
+ __func__, attr[1], PLATFORM_INFO_XML_PATH, attr[3]);
+ goto done;
+ }
+
+done:
+ return;
+}
+
+static void process_acdb_id(const XML_Char **attr)
{
int index;
@@ -49,7 +179,7 @@
goto done;
}
- if(platform_set_snd_device_acdb_id(index, atoi((char *)attr[3])) < 0) {
+ if (platform_set_snd_device_acdb_id(index, atoi((char *)attr[3])) < 0) {
ALOGE("%s: Device %s in %s, ACDB ID %d was not set!",
__func__, attr[1], PLATFORM_INFO_XML_PATH, atoi((char *)attr[3]));
goto done;
@@ -66,15 +196,43 @@
const XML_Char *attr_value = NULL;
unsigned int i;
- if (strcmp(tag_name, "device") == 0)
- process_device(attr);
+ if (strcmp(tag_name, "acdb_ids") == 0) {
+ section = ACDB;
+ } else if (strcmp(tag_name, "pcm_ids") == 0) {
+ section = PCM_ID;
+ } else if (strcmp(tag_name, "backend_names") == 0) {
+ section = BACKEND_NAME;
+ } else if (strcmp(tag_name, "device") == 0) {
+ if ((section != ACDB) && (section != BACKEND_NAME)) {
+ ALOGE("device tag only supported for acdb/backend names");
+ return;
+ }
+
+ /* call into process function for the current section */
+ section_process_fn fn = section_table[section];
+ fn(attr);
+ } else if (strcmp(tag_name, "usecase") == 0) {
+ if (section != PCM_ID) {
+ ALOGE("usecase tag only supported with PCM_ID section");
+ return;
+ }
+
+ section_process_fn fn = section_table[PCM_ID];
+ fn(attr);
+ }
return;
}
-static void end_tag(void *userdata __unused, const XML_Char *tag_name __unused)
+static void end_tag(void *userdata __unused, const XML_Char *tag_name)
{
-
+ if (strcmp(tag_name, "acdb_ids") == 0) {
+ section = ROOT;
+ } else if (strcmp(tag_name, "pcm_ids") == 0) {
+ section = ROOT;
+ } else if (strcmp(tag_name, "backend_names") == 0) {
+ section = ROOT;
+ }
}
int platform_info_init(void)
@@ -86,6 +244,8 @@
void *buf;
static const uint32_t kBufSize = 1024;
+ section = ROOT;
+
file = fopen(PLATFORM_INFO_XML_PATH, "r");
if (!file) {
ALOGD("%s: Failed to open %s, using defaults.",