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/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "metadata-defs.h"
int parse_metadata(char* metadata, char** metadata_saveptr, char* attribute,
unsigned int attribute_size, char* value, unsigned int value_size) {
char* attribute_string;
char* attribute_value_delim;
unsigned int bytes_to_copy;
attribute_string = strtok_r(metadata, ATTRIBUTE_STRING_DELIM, metadata_saveptr);
if (attribute_string == NULL) return METADATA_PARSING_DONE;
attribute[0] = value[0] = '\0';
if ((attribute_value_delim = strchr(attribute_string, ATTRIBUTE_VALUE_DELIM)) != NULL) {
unsigned int attribute_len = (unsigned int)(attribute_value_delim - attribute_string);
/* copy only attribute len + NUL character, or as much as can be fit */
bytes_to_copy = MIN(attribute_len + 1, attribute_size);
strlcpy(attribute, attribute_string, bytes_to_copy);
strlcpy(value, attribute_value_delim + 1, value_size);
}
return METADATA_PARSING_CONTINUE;
}
int parse_video_encode_metadata(char* metadata,
struct video_encode_metadata_t* video_encode_metadata) {
char attribute[1024], value[1024], *saveptr;
char* temp_metadata = metadata;
int parsing_status;
while ((parsing_status = parse_metadata(temp_metadata, &saveptr, attribute, sizeof(attribute),
value, sizeof(value))) == METADATA_PARSING_CONTINUE) {
if (strlen(attribute) == strlen("hint_id") &&
(strncmp(attribute, "hint_id", strlen("hint_id")) == 0)) {
if (strlen(value) > 0) {
video_encode_metadata->hint_id = atoi(value);
}
}
if (strlen(attribute) == strlen("state") &&
(strncmp(attribute, "state", strlen("state")) == 0)) {
if (strlen(value) > 0) {
video_encode_metadata->state = atoi(value);
}
}
temp_metadata = NULL;
}
if (parsing_status == METADATA_PARSING_ERR) return -1;
return 0;
}
int parse_video_decode_metadata(char* metadata,
struct video_decode_metadata_t* video_decode_metadata) {
char attribute[1024], value[1024], *saveptr;
char* temp_metadata = metadata;
int parsing_status;
while ((parsing_status = parse_metadata(temp_metadata, &saveptr, attribute, sizeof(attribute),
value, sizeof(value))) == METADATA_PARSING_CONTINUE) {
if (strlen(attribute) == strlen("hint_id") &&
(strncmp(attribute, "hint_id", strlen("hint_id")) == 0)) {
if (strlen(value) > 0) {
video_decode_metadata->hint_id = atoi(value);
}
}
if (strlen(attribute) == strlen("state") &&
(strncmp(attribute, "state", strlen("state")) == 0)) {
if (strlen(value) > 0) {
video_decode_metadata->state = atoi(value);
}
}
temp_metadata = NULL;
}
if (parsing_status == METADATA_PARSING_ERR) return -1;
return 0;
}
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