1 files changed, 133 insertions, 0 deletions
diff --git a/metadata-parser.c b/metadata-parser.c
new file mode 100644
index 0000000..c9122a4
--- /dev/null
+++ b/metadata-parser.c
@@ -0,0 +1,133 @@
+/* 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 <string.h>
+#include <stdlib.h>
+
+#include "metadata-defs.h"
+
+int parse_metadata(char *metadata, char **metadata_saveptr,
+        char *attribute, int attribute_size, char *value, 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) {
+        bytes_to_copy = MIN((attribute_value_delim - attribute_string),
+                attribute_size - 1);
+        /* Replace strncpy with strlcpy
+         * Add +1 to bytes_to_copy as strlcpy copies size-1 bytes */
+        strlcpy(attribute, attribute_string,
+                bytes_to_copy+1);
+
+        bytes_to_copy = MIN(strlen(attribute_string) - strlen(attribute) - 1,
+                value_size - 1);
+        /* Replace strncpy with strlcpy
+         * Add +1 to bytes_to_copy as strlcpy copies size-1 bytes */
+        strlcpy(value, attribute_value_delim + 1,
+                bytes_to_copy+1);
+    }
+
+    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;
+}