mirror of
https://github.com/outbackdingo/UltraGrid.git
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133 lines
3.9 KiB
C
133 lines
3.9 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 <libgpujpeg/gpujpeg_common.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined _MSC_VER || defined __MINGW32__
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#ifdef GPUJPEG_EXPORTS
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#define GPUJPEG_API __declspec(dllexport)
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#else
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#define GPUJPEG_API __declspec(dllimport)
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#endif
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#else // other platforms
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#define GPUJPEG_API
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#endif
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struct gpujpeg_encoder;
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/**
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* Encoder input type
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*/
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enum gpujpeg_encoder_input_type {
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// Encoder will use custom input buffer
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GPUJPEG_ENCODER_INPUT_IMAGE,
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// Encoder will use OpenGL Texture PBO Resource as input buffer
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GPUJPEG_ENCODER_INPUT_OPENGL_TEXTURE,
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};
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/**
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* Encoder input structure
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*/
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struct gpujpeg_encoder_input
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{
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// Output type
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enum gpujpeg_encoder_input_type type;
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// Image data
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uint8_t* image;
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// Registered OpenGL Texture
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struct gpujpeg_opengl_texture* texture;
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};
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/**
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* Set encoder input to image data
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*
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* @param encoder_input Encoder input structure
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* @param image Input image data
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* @return void
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*/
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GPUJPEG_API void
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gpujpeg_encoder_input_set_image(struct gpujpeg_encoder_input* input, uint8_t* image);
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/**
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* Set encoder input to OpenGL texture
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*
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* @param encoder_input Encoder input structure
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* @param texture_id OpenGL texture id
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* @return void
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*/
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GPUJPEG_API void
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gpujpeg_encoder_input_set_texture(struct gpujpeg_encoder_input* input, struct gpujpeg_opengl_texture* texture);
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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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GPUJPEG_API 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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GPUJPEG_API int
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gpujpeg_encoder_encode(struct gpujpeg_encoder* encoder, struct gpujpeg_encoder_input* input, 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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GPUJPEG_API int
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gpujpeg_encoder_destroy(struct gpujpeg_encoder* encoder);
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#ifdef __cplusplus
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}
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#endif
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#endif // GPUJPEG_ENCODER_H
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