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73 lines
2.4 KiB
73 lines
2.4 KiB
/*
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* Copyright 2019, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _ANDROID_MEDIA_STREAMS_H_
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#define _ANDROID_MEDIA_STREAMS_H_
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#include "src/piex_types.h"
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#include "src/piex.h"
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#include <jni.h>
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#include <nativehelper/JNIHelp.h>
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#include <utils/KeyedVector.h>
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#include <utils/String8.h>
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#include <utils/StrongPointer.h>
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namespace android {
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class FileStream : public piex::StreamInterface {
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private:
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FILE *mFile;
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size_t mPosition;
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public:
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explicit FileStream(const int fd);
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explicit FileStream(const String8 filename);
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~FileStream();
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// Reads 'length' amount of bytes from 'offset' to 'data'. The 'data' buffer
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// provided by the caller, guaranteed to be at least "length" bytes long.
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// On 'kOk' the 'data' pointer contains 'length' valid bytes beginning at
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// 'offset' bytes from the start of the stream.
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// Returns 'kFail' if 'offset' + 'length' exceeds the stream and does not
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// change the contents of 'data'.
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piex::Error GetData(
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const size_t offset, const size_t length, std::uint8_t* data) override;
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bool exists() const;
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};
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// Reads EXIF metadata from a given raw image via piex.
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// And returns true if the operation is successful; otherwise, false.
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bool GetExifFromRawImage(
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piex::StreamInterface* stream, const String8& filename, piex::PreviewImageData& image_data);
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// Returns true if the conversion is successful; otherwise, false.
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bool ConvertKeyValueArraysToKeyedVector(
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JNIEnv *env, jobjectArray keys, jobjectArray values,
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KeyedVector<String8, String8>* vector);
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struct AMessage;
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status_t ConvertMessageToMap(
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JNIEnv *env, const sp<AMessage> &msg, jobject *map);
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status_t ConvertKeyValueArraysToMessage(
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JNIEnv *env, jobjectArray keys, jobjectArray values,
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sp<AMessage> *msg);
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}; // namespace android
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#endif // _ANDROID_MEDIA_STREAMS_H_
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