1 /* Copyright (c) 2012, The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer in the documentation and/or other materials provided
11 * with the distribution.
12 * * Neither the name of The Linux Foundation nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30 #include <stdio.h>
31 #include <string.h>
32 #include <stdlib.h>
33
34 #include "metadata-defs.h"
35
parse_metadata(char * metadata,char ** metadata_saveptr,char * attribute,int attribute_size,char * value,int value_size)36 int parse_metadata(char *metadata, char **metadata_saveptr,
37 char *attribute, int attribute_size, char *value, int value_size)
38 {
39 char *attribute_string;
40 char *attribute_value_delim;
41 unsigned int bytes_to_copy;
42
43 attribute_string = strtok_r(metadata, ATTRIBUTE_STRING_DELIM,
44 metadata_saveptr);
45
46 if (attribute_string == NULL)
47 return METADATA_PARSING_DONE;
48
49 attribute[0] = value[0] = '\0';
50
51 if ((attribute_value_delim = strchr(attribute_string,
52 ATTRIBUTE_VALUE_DELIM)) != NULL) {
53 bytes_to_copy = MIN((attribute_value_delim - attribute_string),
54 attribute_size - 1);
55 strncpy(attribute, attribute_string,
56 bytes_to_copy);
57 attribute[bytes_to_copy] = '\0';
58
59 bytes_to_copy = MIN(strlen(attribute_string) - strlen(attribute) - 1,
60 value_size - 1);
61 strncpy(value, attribute_value_delim + 1,
62 bytes_to_copy);
63 value[bytes_to_copy] = '\0';
64 }
65
66 return METADATA_PARSING_CONTINUE;
67 }
68
parse_video_encode_metadata(char * metadata,struct video_encode_metadata_t * video_encode_metadata)69 int parse_video_encode_metadata(char *metadata,
70 struct video_encode_metadata_t *video_encode_metadata)
71 {
72 char attribute[1024], value[1024], *saveptr;
73 char *temp_metadata = metadata;
74 int parsing_status;
75
76 while ((parsing_status = parse_metadata(temp_metadata, &saveptr,
77 attribute, sizeof(attribute), value, sizeof(value))) == METADATA_PARSING_CONTINUE) {
78 if (strlen(attribute) == strlen("hint_id") &&
79 (strncmp(attribute, "hint_id", strlen("hint_id")) == 0)) {
80 if (strlen(value) > 0) {
81 video_encode_metadata->hint_id = atoi(value);
82 }
83 }
84
85 if (strlen(attribute) == strlen("state") &&
86 (strncmp(attribute, "state", strlen("state")) == 0)) {
87 if (strlen(value) > 0) {
88 video_encode_metadata->state = atoi(value);
89 }
90 }
91
92 temp_metadata = NULL;
93 }
94
95 if (parsing_status == METADATA_PARSING_ERR)
96 return -1;
97
98 return 0;
99 }
100
parse_video_decode_metadata(char * metadata,struct video_decode_metadata_t * video_decode_metadata)101 int parse_video_decode_metadata(char *metadata,
102 struct video_decode_metadata_t *video_decode_metadata)
103 {
104 char attribute[1024], value[1024], *saveptr;
105 char *temp_metadata = metadata;
106 int parsing_status;
107
108 while ((parsing_status = parse_metadata(temp_metadata, &saveptr,
109 attribute, sizeof(attribute), value, sizeof(value))) == METADATA_PARSING_CONTINUE) {
110 if (strlen(attribute) == strlen("hint_id") &&
111 (strncmp(attribute, "hint_id", strlen("hint_id")) == 0)) {
112 if (strlen(value) > 0) {
113 video_decode_metadata->hint_id = atoi(value);
114 }
115 }
116
117 if (strlen(attribute) == strlen("state") &&
118 (strncmp(attribute, "state", strlen("state")) == 0)) {
119 if (strlen(value) > 0) {
120 video_decode_metadata->state = atoi(value);
121 }
122 }
123
124 temp_metadata = NULL;
125 }
126
127 if (parsing_status == METADATA_PARSING_ERR)
128 return -1;
129
130 return 0;
131 }
132