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-rw-r--r--media/img_utils/include/img_utils/FileInput.h76
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diff --git a/media/img_utils/include/img_utils/FileInput.h b/media/img_utils/include/img_utils/FileInput.h
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+/*
+ * Copyright 2014 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef IMG_UTILS_FILE_INPUT_H
+#define IMG_UTILS_FILE_INPUT_H
+
+#include <img_utils/Input.h>
+
+#include <cutils/compiler.h>
+#include <utils/Errors.h>
+#include <utils/String8.h>
+#include <stdio.h>
+#include <stdint.h>
+
+namespace android {
+namespace img_utils {
+
+/**
+ * Utility class for reading from a file.
+ */
+class ANDROID_API FileInput : public Input {
+ public:
+ /**
+ * Create a file input for the given path.
+ */
+ FileInput(String8 path);
+
+ virtual ~FileInput();
+
+ /**
+ * Open a file descriptor to the path given in the constructor.
+ *
+ * Returns OK on success, or a negative error code.
+ */
+ virtual status_t open();
+
+ /**
+ * Read bytes from the file into the given buffer. At most, the number
+ * of bytes given in the count argument will be read. Bytes will be written
+ * into the given buffer starting at the index given in the offset argument.
+ *
+ * Returns the number of bytes read. If an error has occurred, the value pointed
+ * to by the given status_t pointer will be set to a negative error code.
+ */
+ virtual size_t read(uint8_t* buf, size_t offset, size_t count, status_t* err);
+
+ /**
+ * Close the file descriptor to the path given in the constructor.
+ *
+ * Returns OK on success, or a negative error code.
+ */
+ virtual status_t close();
+ private:
+ FILE *mFp;
+ String8 mPath;
+ bool mOpen;
+};
+
+} /*namespace img_utils*/
+} /*namespace android*/
+
+
+#endif /*IMG_UTILS_INPUT_H*/