mirror of
https://github.com/outbackdingo/UltraGrid.git
synced 2026-03-20 20:40:15 +00:00
136 lines
4.1 KiB
C
136 lines
4.1 KiB
C
/**
|
|
* Copyright (c) 2011, CESNET z.s.p.o
|
|
* Copyright (c) 2011, Silicon Genome, LLC.
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef GPUJPEG_ENCODER_H
|
|
#define GPUJPEG_ENCODER_H
|
|
|
|
#include <libgpujpeg/gpujpeg_common.h>
|
|
#include <libgpujpeg/gpujpeg_table.h>
|
|
#include <libgpujpeg/gpujpeg_writer.h>
|
|
|
|
/**
|
|
* Encoder input type
|
|
*/
|
|
enum gpujpeg_encoder_input_type {
|
|
// Encoder will use custom input buffer
|
|
GPUJPEG_ENCODER_INPUT_IMAGE,
|
|
// Encoder will use OpenGL Texture PBO Resource as input buffer
|
|
GPUJPEG_ENCODER_INPUT_OPENGL_TEXTURE,
|
|
};
|
|
|
|
/**
|
|
* Encoder input structure
|
|
*/
|
|
struct gpujpeg_encoder_input
|
|
{
|
|
// Output type
|
|
enum gpujpeg_encoder_input_type type;
|
|
|
|
// Image data
|
|
uint8_t* image;
|
|
|
|
// Registered OpenGL Texture
|
|
struct gpujpeg_opengl_texture* texture;
|
|
};
|
|
|
|
/**
|
|
* Set encoder input to image data
|
|
*
|
|
* @param encoder_input Encoder input structure
|
|
* @param image Input image data
|
|
* @return void
|
|
*/
|
|
void
|
|
gpujpeg_encoder_input_set_image(struct gpujpeg_encoder_input* input, uint8_t* image);
|
|
|
|
/**
|
|
* Set encoder input to OpenGL texture
|
|
*
|
|
* @param encoder_input Encoder input structure
|
|
* @param texture_id OpenGL texture id
|
|
* @return void
|
|
*/
|
|
void
|
|
gpujpeg_encoder_input_set_texture(struct gpujpeg_encoder_input* input, struct gpujpeg_opengl_texture* texture);
|
|
|
|
/**
|
|
* JPEG encoder structure
|
|
*/
|
|
struct gpujpeg_encoder
|
|
{
|
|
// JPEG coder structure
|
|
struct gpujpeg_coder coder;
|
|
|
|
// JPEG writer structure
|
|
struct gpujpeg_writer* writer;
|
|
|
|
// Quantization tables
|
|
struct gpujpeg_table_quantization table_quantization[GPUJPEG_COMPONENT_TYPE_COUNT];
|
|
|
|
// Huffman coder tables
|
|
struct gpujpeg_table_huffman_encoder table_huffman[GPUJPEG_COMPONENT_TYPE_COUNT][GPUJPEG_HUFFMAN_TYPE_COUNT];
|
|
|
|
// Timers
|
|
GPUJPEG_CUSTOM_TIMER_DECLARE(def)
|
|
GPUJPEG_CUSTOM_TIMER_DECLARE(in_gpu)
|
|
};
|
|
|
|
/**
|
|
* Create JPEG encoder
|
|
*
|
|
* @param param Parameters for coder
|
|
* @param param_image Parameters for image data
|
|
* @return encoder structure if succeeds, otherwise NULL
|
|
*/
|
|
struct gpujpeg_encoder*
|
|
gpujpeg_encoder_create(struct gpujpeg_parameters* param, struct gpujpeg_image_parameters* param_image);
|
|
|
|
/**
|
|
* Compress image by encoder
|
|
*
|
|
* @param encoder Encoder structure
|
|
* @param image Source image data
|
|
* @param image_compressed Pointer to variable where compressed image data buffer will be placed
|
|
* @param image_compressed_size Pointer to variable where compressed image size will be placed
|
|
* @return 0 if succeeds, otherwise nonzero
|
|
*/
|
|
int
|
|
gpujpeg_encoder_encode(struct gpujpeg_encoder* encoder, struct gpujpeg_encoder_input* input, uint8_t** image_compressed, int* image_compressed_size);
|
|
|
|
/**
|
|
* Destory JPEG encoder
|
|
*
|
|
* @param encoder Encoder structure
|
|
* @return 0 if succeeds, otherwise nonzero
|
|
*/
|
|
int
|
|
gpujpeg_encoder_destroy(struct gpujpeg_encoder* encoder);
|
|
|
|
#endif // GPUJPEG_ENCODER_H
|