struct audio_route *audio_route_init(void)
{
struct config_parse_state state;
XML_Parser parser;
FILE *file;
int bytes_read;
void *buf;
int i;
struct mixer_path *path;
struct audio_route *ar;
ar = calloc(1, sizeof(struct audio_route));
if (!ar)
goto err_calloc;
ar->mixer = mixer_open(MIXER_CARD);
if (!ar->mixer) {
ALOGE("Unable to open the mixer, aborting.");
goto err_mixer_open;
}
ar->mixer_path = NULL;
ar->mixer_path_size = 0;
ar->num_mixer_paths = 0;
/* allocate space for and read current mixer settings */
if (alloc_mixer_state(ar) < 0)
goto err_mixer_state;
file = fopen(MIXER_XML_PATH, "r");
if (!file) {
ALOGE("Failed to open %s", MIXER_XML_PATH);
goto err_fopen;
}
parser = XML_ParserCreate(NULL);
if (!parser) {
ALOGE("Failed to create XML parser");
goto err_parser_create;
}
memset(&state, 0, sizeof(state));
state.ar = ar;
XML_SetUserData(parser, &state);
XML_SetElementHandler(parser, start_tag, end_tag);
for (;;) {
buf = XML_GetBuffer(parser, BUF_SIZE);
if (buf == NULL)
goto err_parse;
bytes_read = fread(buf, 1, BUF_SIZE, file);
if (bytes_read < 0)
goto err_parse;
if (XML_ParseBuffer(parser, bytes_read,
bytes_read == 0) == XML_STATUS_ERROR) {
ALOGE("Error in mixer xml (%s)", MIXER_XML_PATH);
goto err_parse;
}
if (bytes_read == 0)
break;
}
audio_route_apply_path(ar, "init");
/* apply the initial mixer values, and save them so we can reset the
mixer to the original values */
update_mixer_state(ar);
save_mixer_state(ar);
XML_ParserFree(parser);
fclose(file);
return ar;
err_parse:
XML_ParserFree(parser);
err_parser_create:
fclose(file);
err_fopen:
free_mixer_state(ar);
err_mixer_state:
mixer_close(ar->mixer);
err_mixer_open:
free(ar);
ar = NULL;
err_calloc:
return NULL;
}
struct audio_route *audio_route_init(unsigned int card_slot)
{
struct config_parse_state state;
XML_Parser parser;
FILE *file;
int bytes_read;
void *buf;
int fd, cnt;
struct mixer_path *path;
struct audio_route *ar;
char vendor_xml_path[PATH_MAX];
char codec_vendor_name[PATH_MAX];
char vendor_name[255];
char *tmpchar;
ar = calloc(1, sizeof(struct audio_route));
if (!ar)
goto err_calloc;
ar->mixer = mixer_open(card_slot);
if (!ar->mixer) {
ALOGE("Unable to open the mixer, aborting.");
goto err_mixer_open;
}
ALOGV("Mixer open successful.");
ar->mixer_path = NULL;
ar->mixer_path_size = 0;
ar->num_mixer_paths = 0;
/* allocate space for and read current mixer settings */
if (alloc_mixer_state(ar) < 0)
goto err_mixer_state;
snprintf(codec_vendor_name, sizeof(codec_vendor_name), CODEC_CHIP_NAME_PATH, card_slot);
fd = open(codec_vendor_name, O_RDONLY);
if (fd == -1) {
ALOGE("Failed to open %s", codec_vendor_name);
/* If no codec name file, then use unknown. */
strcpy(vendor_name, CODEC_CHIP_NAME_UNKNOWN);
} else {
cnt = read(fd, vendor_name, 255);
if (cnt <= 0) {
ALOGE("Failed to read vendor name:%s.", vendor_name);
/* If no codec name file, then use unknown. */
strcpy(vendor_name, CODEC_CHIP_NAME_UNKNOWN);
} else {
vendor_name[cnt-1] = '\0';
}
close(fd);
}
/* Replace spaces with underscore in vendor name */
tmpchar = vendor_name;
while (*tmpchar) {
if (*tmpchar == ' ')
*tmpchar = '_';
tmpchar++;
}
sprintf(vendor_xml_path, MIXER_XML_PATH, vendor_name);
ALOGV("Opening up %s.", vendor_xml_path);
file = fopen(vendor_xml_path, "r");
if (!file) {
ALOGE("Failed to open %s", vendor_xml_path);
goto err_fopen;
}
parser = XML_ParserCreate(NULL);
if (!parser) {
ALOGE("Failed to create XML parser");
goto err_parser_create;
}
memset(&state, 0, sizeof(state));
state.ar = ar;
XML_SetUserData(parser, &state);
XML_SetElementHandler(parser, start_tag, end_tag);
for (;;) {
buf = XML_GetBuffer(parser, BUF_SIZE);
if (buf == NULL)
goto err_parse;
bytes_read = fread(buf, 1, BUF_SIZE, file);
if (ferror(file))
goto err_parse;
if (XML_ParseBuffer(parser, bytes_read,
bytes_read == 0) == XML_STATUS_ERROR) {
ALOGE("Error in mixer xml (%s)", MIXER_XML_PATH);
goto err_parse;
}
if (bytes_read == 0)
break;
}
/* apply the initial mixer values, and save them so we can reset the
mixer to the original values */
update_mixer_state(ar);
save_mixer_state(ar);
XML_ParserFree(parser);
fclose(file);
return ar;
err_parse:
XML_ParserFree(parser);
err_parser_create:
fclose(file);
err_fopen:
free_mixer_state(ar);
err_mixer_state:
mixer_close(ar->mixer);
err_mixer_open:
free(ar);
ar = NULL;
err_calloc:
return NULL;
}