mirror of
https://github.com/TomHarte/CLK.git
synced 2024-07-17 13:29:02 +00:00
63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
//
|
|
// CRTInputBufferBuilder.hpp
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 08/03/2016.
|
|
// Copyright © 2016 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#ifndef CRTInputBufferBuilder_hpp
|
|
#define CRTInputBufferBuilder_hpp
|
|
|
|
#include <stdint.h>
|
|
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
#include "CRTConstants.hpp"
|
|
#include "OpenGL.hpp"
|
|
#include <memory>
|
|
|
|
namespace Outputs {
|
|
namespace CRT {
|
|
|
|
struct CRTInputBufferBuilder {
|
|
CRTInputBufferBuilder(size_t bytes_per_pixel);
|
|
|
|
void allocate_write_area(size_t required_length);
|
|
void reduce_previous_allocation_to(size_t actual_length);
|
|
|
|
uint16_t get_and_finalise_current_line();
|
|
uint8_t *get_image_pointer();
|
|
|
|
uint8_t *get_write_target();
|
|
|
|
uint16_t get_last_write_x_position();
|
|
|
|
uint16_t get_last_write_y_position();
|
|
|
|
size_t get_bytes_per_pixel();
|
|
|
|
bool is_full();
|
|
|
|
private:
|
|
// where pixel data will be put to the next time a write is requested
|
|
uint16_t _next_write_x_position, _next_write_y_position;
|
|
|
|
// the most recent position returned for pixel data writing
|
|
uint16_t _write_x_position, _write_y_position;
|
|
|
|
// details of the most recent allocation
|
|
size_t _write_target_pointer;
|
|
size_t _last_allocation_amount;
|
|
|
|
// the buffer size
|
|
size_t _bytes_per_pixel;
|
|
|
|
// the buffer
|
|
std::unique_ptr<uint8_t> _image;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* CRTInputBufferBuilder_hpp */
|