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119 lines
4.6 KiB
119 lines
4.6 KiB
3 years ago
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/* Copyright (c) 2012, 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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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "metadata-defs.h"
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int parse_metadata(char* metadata, char** metadata_saveptr, char* attribute,
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unsigned int attribute_size, char* value, unsigned int value_size) {
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char* attribute_string;
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char* attribute_value_delim;
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unsigned int bytes_to_copy;
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attribute_string = strtok_r(metadata, ATTRIBUTE_STRING_DELIM, metadata_saveptr);
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if (attribute_string == NULL) return METADATA_PARSING_DONE;
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attribute[0] = value[0] = '\0';
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if ((attribute_value_delim = strchr(attribute_string, ATTRIBUTE_VALUE_DELIM)) != NULL) {
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unsigned int attribute_len = (unsigned int)(attribute_value_delim - attribute_string);
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/* copy only attribute len + NUL character, or as much as can be fit */
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bytes_to_copy = MIN(attribute_len + 1, attribute_size);
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strlcpy(attribute, attribute_string, bytes_to_copy);
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strlcpy(value, attribute_value_delim + 1, value_size);
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}
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return METADATA_PARSING_CONTINUE;
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}
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int parse_video_encode_metadata(char* metadata,
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struct video_encode_metadata_t* video_encode_metadata) {
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char attribute[1024], value[1024], *saveptr;
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char* temp_metadata = metadata;
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int parsing_status;
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while ((parsing_status = parse_metadata(temp_metadata, &saveptr, attribute, sizeof(attribute),
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value, sizeof(value))) == METADATA_PARSING_CONTINUE) {
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if (strlen(attribute) == strlen("hint_id") &&
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(strncmp(attribute, "hint_id", strlen("hint_id")) == 0)) {
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if (strlen(value) > 0) {
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video_encode_metadata->hint_id = atoi(value);
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}
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}
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if (strlen(attribute) == strlen("state") &&
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(strncmp(attribute, "state", strlen("state")) == 0)) {
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if (strlen(value) > 0) {
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video_encode_metadata->state = atoi(value);
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}
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}
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temp_metadata = NULL;
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}
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if (parsing_status == METADATA_PARSING_ERR) return -1;
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return 0;
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}
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int parse_video_decode_metadata(char* metadata,
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struct video_decode_metadata_t* video_decode_metadata) {
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char attribute[1024], value[1024], *saveptr;
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char* temp_metadata = metadata;
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int parsing_status;
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while ((parsing_status = parse_metadata(temp_metadata, &saveptr, attribute, sizeof(attribute),
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value, sizeof(value))) == METADATA_PARSING_CONTINUE) {
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if (strlen(attribute) == strlen("hint_id") &&
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(strncmp(attribute, "hint_id", strlen("hint_id")) == 0)) {
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if (strlen(value) > 0) {
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video_decode_metadata->hint_id = atoi(value);
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}
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}
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if (strlen(attribute) == strlen("state") &&
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(strncmp(attribute, "state", strlen("state")) == 0)) {
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if (strlen(value) > 0) {
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video_decode_metadata->state = atoi(value);
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}
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}
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temp_metadata = NULL;
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}
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if (parsing_status == METADATA_PARSING_ERR) return -1;
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return 0;
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}
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