aboutsummaryrefslogtreecommitdiff
path: root/fileops.c
diff options
context:
space:
mode:
Diffstat (limited to 'fileops.c')
-rw-r--r--fileops.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/fileops.c b/fileops.c
new file mode 100644
index 0000000..17fbe47
--- /dev/null
+++ b/fileops.c
@@ -0,0 +1,60 @@
+/*
+ * V4L2 Codec decoding example application
+ * Kamil Debski <k.debski@samsung.com>
+ *
+ * File operations
+ *
+ * Copyright 2012 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "fileops.h"
+
+int input_open(struct instance *i, char *name)
+{
+ struct stat in_stat;
+
+ i->in.fd = open(name, O_RDONLY);
+ if (!i->in.fd) {
+ err("Failed to open file: %s", i->in.name);
+ return -1;
+ }
+
+ fstat(i->in.fd, &in_stat);
+
+ i->in.size = in_stat.st_size;
+ i->in.offs = 0;
+ i->in.p = mmap(0, i->in.size, PROT_READ, MAP_SHARED, i->in.fd, 0);
+ if (i->in.p == MAP_FAILED) {
+ err("Failed to map input file");
+ return -1;
+ }
+
+ return 0;
+}
+
+void input_close(struct instance *i)
+{
+ munmap(i->in.p, i->in.size);
+ close(i->in.fd);
+}
+