TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / android / camera / JpegCompressor.h

diff --git a/src/type3_AndroidCloud/anbox-master/android/camera/JpegCompressor.h b/src/type3_AndroidCloud/anbox-master/android/camera/JpegCompressor.h
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+/*
+ * Copyright (C) 2011 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 HW_EMULATOR_CAMERA_JPEG_COMPRESSOR_H
+#define HW_EMULATOR_CAMERA_JPEG_COMPRESSOR_H
+
+/*
+ * Contains declaration of a class NV21JpegCompressor that encapsulates a
+ * converter between YV21, and JPEG formats.
+ */
+
+#include "JpegStub.h"
+#include <utils/threads.h>
+
+namespace android {
+
+/* Encapsulates a converter between YV12, and JPEG formats.
+ */
+class NV21JpegCompressor
+{
+public:
+    /* Constructs JpegCompressor instance. */
+    NV21JpegCompressor();
+    /* Destructs JpegCompressor instance. */
+    ~NV21JpegCompressor();
+
+    /****************************************************************************
+     * Public API
+     ***************************************************************************/
+
+public:
+    /* Compresses raw NV21 image into a JPEG.
+     * The compressed image will be saved in mStream member of this class. Use
+     * getCompressedSize method to obtain buffer size of the compressed image,
+     * and getCompressedImage to copy out the compressed image.
+     * Param:
+     *  image - Raw NV21 image.
+     *  width, height - Image dimensions.
+     *  quality - JPEG quality.
+     * Return:
+     *  NO_ERROR on success, or an appropriate error status.
+     *
+     */
+    status_t compressRawImage(const void* image,
+                              int width,
+                              int height,
+                              int quality);
+
+    /* Get size of the compressed JPEG buffer.
+     * This method must be called only after a successful completion of
+     * compressRawImage call.
+     * Return:
+     *  Size of the compressed JPEG buffer.
+     */
+    size_t getCompressedSize();
+
+    /* Copies out compressed JPEG buffer.
+     * This method must be called only after a successful completion of
+     * compressRawImage call.
+     * Param:
+     *  buff - Buffer where to copy the JPEG. Must be large enough to contain the
+     *      entire image.
+     */
+    void getCompressedImage(void* buff);
+
+    /****************************************************************************
+     * Class data
+     ***************************************************************************/
+
+protected:
+    /* Strides for Y (the first element), and UV (the second one) panes. */
+    int                     mStrides[2];
+
+private:
+    // library handle to dlopen
+    static void* mDl;
+    JpegStub mStub;
+};
+
+}; /* namespace android */
+
+#endif  /* HW_EMULATOR_CAMERA_JPEG_COMPRESSOR_H */