152 lines
4.5 KiB
C
152 lines
4.5 KiB
C
/*
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* Copyright (c) 2014, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define LOG_TAG "platform_info"
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#define LOG_NDDEBUG 0
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#include <errno.h>
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#include <stdio.h>
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#include <expat.h>
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#include <cutils/log.h>
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#include <audio_hw.h>
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#include "platform_api.h"
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#include <platform.h>
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#define BUF_SIZE 1024
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static void process_device(const XML_Char **attr)
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{
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int index;
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if (strcmp(attr[0], "name") != 0) {
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ALOGE("%s: 'name' not found, no ACDB ID set!", __func__);
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goto done;
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}
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index = platform_get_snd_device_index((char *)attr[1]);
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if (index < 0) {
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ALOGE("%s: Device %s in platform info xml not found, no ACDB ID set!",
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__func__, attr[1]);
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goto done;
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}
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if (strcmp(attr[2], "acdb_id") != 0) {
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ALOGE("%s: Device %s in platform info xml has no acdb_id, no ACDB ID set!",
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__func__, attr[1]);
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goto done;
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}
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if(platform_set_snd_device_acdb_id(index, atoi((char *)attr[3])) < 0) {
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ALOGE("%s: Device %s in platform info xml ACDB ID %d was not set!",
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__func__, attr[1], atoi((char *)attr[3]));
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goto done;
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}
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done:
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return;
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}
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static void start_tag(void *userdata, const XML_Char *tag_name,
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const XML_Char **attr)
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{
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const XML_Char *attr_name = NULL;
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const XML_Char *attr_value = NULL;
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unsigned int i;
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if (strcmp(tag_name, "device") == 0)
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process_device(attr);
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return;
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}
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static void end_tag(void *userdata, const XML_Char *tag_name)
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{
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}
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int platform_info_init(const char *filename)
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{
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XML_Parser parser;
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FILE *file;
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int ret = 0;
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int bytes_read;
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void *buf;
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file = fopen(filename, "r");
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if (!file) {
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ALOGD("%s: Failed to open %s, using defaults.",
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__func__, filename);
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ret = -ENODEV;
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goto done;
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}
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parser = XML_ParserCreate(NULL);
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if (!parser) {
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ALOGE("%s: Failed to create XML parser!", __func__);
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ret = -ENODEV;
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goto err_close_file;
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}
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XML_SetElementHandler(parser, start_tag, end_tag);
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while (1) {
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buf = XML_GetBuffer(parser, BUF_SIZE);
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if (buf == NULL) {
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ALOGE("%s: XML_GetBuffer failed", __func__);
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ret = -ENOMEM;
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goto err_free_parser;
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}
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bytes_read = fread(buf, 1, BUF_SIZE, file);
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if (bytes_read < 0) {
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ALOGE("%s: fread failed, bytes read = %d", __func__, bytes_read);
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ret = bytes_read;
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goto err_free_parser;
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}
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if (XML_ParseBuffer(parser, bytes_read,
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bytes_read == 0) == XML_STATUS_ERROR) {
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ALOGE("%s: XML_ParseBuffer failed, for %s",
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__func__, filename);
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ret = -EINVAL;
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goto err_free_parser;
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}
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if (bytes_read == 0)
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break;
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}
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err_free_parser:
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XML_ParserFree(parser);
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err_close_file:
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fclose(file);
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done:
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return ret;
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}
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