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controller/Macro/PixelMap/pixel.h
2016-01-05 04:04:11 -08:00

128 lines
3.9 KiB
C

/* Copyright (C) 2015-2016 by Jacob Alexander
*
* This file is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this file. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
// ----- Includes -----
// Compiler Includes
#include <stdint.h>
// ----- Enums -----
typedef enum FrameState {
FrameState_Ready, // Buffers have been updated and are ready to send
FrameState_Sending, // Buffers are currently being sent, do not change
FrameState_Update, // Buffers need to be updated to latest frame
} FrameState;
// Pixel Change Storage
// - Store only the change of the pixel
// - Change is a value (size of the pixel)
// - Contiguous sets of pixel changes can be stored for maximized packing (with the same width)
// - Each value has a corresponding operator
// * Add
// * Subtract
// * Left shift
// * Right shift
// * Set
// * Add no-rollover
// * Subtract no-rollover
typedef enum PixelChange {
PixelChange_Set = 0, // =
PixelChange_Add, // +
PixelChange_Subtract, // -
PixelChange_NoRoll_Add, // +:
PixelChange_NoRoll_Subtract, // -:
PixelChange_LeftShift, // <<
PixelChange_RightShift, // >>
} PixelChange;
// Animation modifiers
typedef enum AnimationModifier {
AnimationModifier_None = 0x00,
AnimationModifier_Fallthrough = 0x01, // Process lower animation first
} AnimationModifier;
// ----- Structs -----
// Element of array of buffers pointers
typedef struct PixelBuf {
uint8_t size; // Number of elements
uint8_t width; // Width of each element
uint16_t offset; // Subtraction offset from absolute channel
void *data; // Pointer to start of buffer
} PixelBuf;
#define PixelBufElem(len,width,offset,ptr) { len, width, offset, (void*)ptr }
#define PixelBuf8(pixbuf, ch) ( ((uint8_t*) (pixbuf->data))[ ch - pixbuf->offset ] )
#define PixelBuf16(pixbuf, ch) ( ((uint16_t*)(pixbuf->data))[ ch - pixbuf->offset ] )
// Individual Pixel element
#define Pixel_MaxChannelPerPixel 3 // TODO Generate
typedef struct PixelElement {
uint8_t width; // Number of bits in a channel
uint8_t channels; // Number of channels
// Hardware indices for each channel
uint16_t indices[Pixel_MaxChannelPerPixel];
} PixelElement;
#define Pixel_RGBChannel(r,g,b) { 8, 3, { r, g, b } }
// TODO generate macro based on max channels
//#define Pixel_8bitChannel(c) { 8, 1, { c } }
typedef struct PixelMod {
uint16_t pixel; // Pixel index
PixelChange change; // Change to apply to pixel
uint8_t contiguousPixels; // # of contiguous pixels to apply same changes too
uint8_t data[0]; // Data size depends on PixelElement definition
} PixelMod;
// Animation stack element
typedef struct AnimationElement {
uint16_t index; // Animation id
uint16_t pos; // Current frame
uint8_t loops; // # of loops to run animation, 0 indicates infinite
uint8_t divider; // # of times to repeat each frame
AnimationModifier modifier; // Modifier applied to the entire animation
} AnimationElement;
// Animation stack
#define Pixel_AnimationStackSize 16
typedef struct AnimationStack {
uint16_t size;
AnimationElement stack[Pixel_AnimationStackSize];
} AnimationStack;
// ----- Variables -----
extern FrameState Pixel_FrameState;
// ----- Functions -----
void Pixel_process();
void Pixel_setup();