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author | The Android Open Source Project <initial-contribution@android.com> | 2014-11-06 17:49:48 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2014-11-06 17:49:48 -0800 |
commit | e1a2df553a6d151807a5da738a3cd853bef908d9 (patch) | |
tree | 9015c1c9ad9ec69f1962657f70fe3df386fbb05a /media/img_utils/include/img_utils/Input.h | |
parent | bcf093bfef277a8ec0119da9e84e5abac58ad0b1 (diff) | |
parent | 841daebc75fbf5e7fb4dd71cab559b8f4d7150ae (diff) | |
download | frameworks_av-e1a2df553a6d151807a5da738a3cd853bef908d9.zip frameworks_av-e1a2df553a6d151807a5da738a3cd853bef908d9.tar.gz frameworks_av-e1a2df553a6d151807a5da738a3cd853bef908d9.tar.bz2 |
Resolve conflict
Diffstat (limited to 'media/img_utils/include/img_utils/Input.h')
-rw-r--r-- | media/img_utils/include/img_utils/Input.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/media/img_utils/include/img_utils/Input.h b/media/img_utils/include/img_utils/Input.h new file mode 100644 index 0000000..6a03647 --- /dev/null +++ b/media/img_utils/include/img_utils/Input.h @@ -0,0 +1,71 @@ +/* + * 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_INPUT_H +#define IMG_UTILS_INPUT_H + +#include <cutils/compiler.h> +#include <utils/Errors.h> +#include <stdint.h> + +namespace android { +namespace img_utils { + +/** + * Utility class used as a source of bytes. + */ +class ANDROID_API Input { + public: + virtual ~Input(); + + /** + * Open this Input. + * + * Returns OK on success, or a negative error code. + */ + virtual status_t open(); + + /** + * Read bytes 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, or NOT_ENOUGH_DATA if at the end of the file. If an + * error has occurred, this will return a negative error code other than NOT_ENOUGH_DATA. + */ + virtual ssize_t read(uint8_t* buf, size_t offset, size_t count) = 0; + + /** + * Skips bytes in the input. + * + * Returns the number of bytes skipped, or NOT_ENOUGH_DATA if at the end of the file. If an + * error has occurred, this will return a negative error code other than NOT_ENOUGH_DATA. + */ + virtual ssize_t skip(size_t count); + + /** + * Close the Input. It is not valid to call open on a previously closed Input. + * + * Returns OK on success, or a negative error code. + */ + virtual status_t close(); +}; + +} /*namespace img_utils*/ +} /*namespace android*/ + + +#endif /*IMG_UTILS_INPUT_H*/ |