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author | Ruben Brunk <rubenbrunk@google.com> | 2013-06-28 20:02:54 -0700 |
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committer | Ruben Brunk <rubenbrunk@google.com> | 2013-07-11 13:41:29 -0700 |
commit | a8221bbdb8ece9b02dbf7b72565f9fbc5b314f7c (patch) | |
tree | 0fd84567e4f8a8d2bff0e7dcd696c88d518251cb /jni_jpegstream/src/inputstream_wrapper.h | |
parent | 0c1b4c6422a4d2d9b81cc0946d1c9675440a94e2 (diff) | |
download | android_packages_apps_Gallery2-a8221bbdb8ece9b02dbf7b72565f9fbc5b314f7c.tar.gz android_packages_apps_Gallery2-a8221bbdb8ece9b02dbf7b72565f9fbc5b314f7c.tar.bz2 android_packages_apps_Gallery2-a8221bbdb8ece9b02dbf7b72565f9fbc5b314f7c.zip |
Added jpeg streaming classes.
- Provides streaming operations for decompressing/compressing
JPEG files.
- Allows pixel operations to be performed on large JPEG images
without holding the entire bitmap in memory.
Change-Id: I597ddf282b59d2ba6d6bca4722208121e3728f94
Diffstat (limited to 'jni_jpegstream/src/inputstream_wrapper.h')
-rw-r--r-- | jni_jpegstream/src/inputstream_wrapper.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/jni_jpegstream/src/inputstream_wrapper.h b/jni_jpegstream/src/inputstream_wrapper.h new file mode 100644 index 000000000..ed9942bab --- /dev/null +++ b/jni_jpegstream/src/inputstream_wrapper.h @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2013 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 INPUTSTREAM_WRAPPER_H_ +#define INPUTSTREAM_WRAPPER_H_ + +#include "jni_defines.h" +#include "stream_wrapper.h" + +#include <stdint.h> + +class InputStreamWrapper : public StreamWrapper { +public: + virtual int32_t read(int32_t length, int32_t offset); + virtual int64_t skip(int64_t count); + virtual int32_t forceReadEOI(); + + // Call this in JNI_OnLoad to cache read/skip method IDs + static void setReadSkipMethodIDs(jmethodID readID, jmethodID skipID); +protected: + static jmethodID sReadID; + static jmethodID sSkipID; +}; + +#endif // INPUTSTREAM_WRAPPER_H_ |