mirror of
https://github.com/outbackdingo/UltraGrid.git
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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/**
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* Copyright (c) 2011, CESNET z.s.p.o
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* Copyright (c) 2011, Silicon Genome, LLC.
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef GPUJPEG_ENCODER_H
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#define GPUJPEG_ENCODER_H
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#include "gpujpeg_common.h"
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#include "gpujpeg_table.h"
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#include "gpujpeg_writer.h"
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/**
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* JPEG encoder structure
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*/
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struct gpujpeg_encoder
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{
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// JPEG coder structure
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struct gpujpeg_coder coder;
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// JPEG writer structure
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struct gpujpeg_writer* writer;
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// Quantization tables
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struct gpujpeg_table_quantization table_quantization[GPUJPEG_COMPONENT_TYPE_COUNT];
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// Huffman coder tables
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struct gpujpeg_table_huffman_encoder table_huffman[GPUJPEG_COMPONENT_TYPE_COUNT][GPUJPEG_HUFFMAN_TYPE_COUNT];
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// Huffman coder tables in device memory
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struct gpujpeg_table_huffman_encoder* d_table_huffman[GPUJPEG_COMPONENT_TYPE_COUNT][GPUJPEG_HUFFMAN_TYPE_COUNT];
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};
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/**
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* Create JPEG encoder
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*
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* @param param Parameters for coder
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* @param param_image Parameters for image data
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* @return encoder structure if succeeds, otherwise NULL
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*/
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struct gpujpeg_encoder*
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gpujpeg_encoder_create(struct gpujpeg_parameters* param, struct gpujpeg_image_parameters* param_image);
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/**
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* Compress image by encoder
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*
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* @param encoder Encoder structure
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* @param image Source image data
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* @param image_compressed Pointer to variable where compressed image data buffer will be placed
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* @param image_compressed_size Pointer to variable where compressed image size will be placed
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* @return 0 if succeeds, otherwise nonzero
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*/
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int
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gpujpeg_encoder_encode(struct gpujpeg_encoder* encoder, uint8_t* image, uint8_t** image_compressed, int* image_compressed_size);
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/**
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* Destory JPEG encoder
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*
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* @param encoder Encoder structure
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* @return 0 if succeeds, otherwise nonzero
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*/
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int
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gpujpeg_encoder_destroy(struct gpujpeg_encoder* encoder);
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#endif // GPUJPEG_ENCODER_H
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