Private
Public Access
30 lines
1.7 KiB
C
30 lines
1.7 KiB
C
#ifndef HYPERDRM_SPATIAL_IMAGE_H
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#define HYPERDRM_SPATIAL_IMAGE_H
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#include <stdlib.h>
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#include <stdio.h>
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#include "layout.h"
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#include "interpolation.h"
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#include "color_boost.h"
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enum {SPATIAL_WIDTH=160,SPATIAL_HEIGHT=90,SPATIAL_PIXELS=SPATIAL_WIDTH*SPATIAL_HEIGHT};
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/* Synthetic color plane from histogram samples, never captured video pixels.
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* HyperHDR 22 treats JSON color as a solid color; image input retains space.
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* The receiver samples this plane using its configured LED rectangles. */
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static char *spatial_image_command(const unsigned char regions[16][3],unsigned priority){
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static LedBlend blends[SPATIAL_PIXELS];static bool initialized;
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if(!initialized){
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for(unsigned y=0;y<SPATIAL_HEIGHT;y++)for(unsigned x=0;x<SPATIAL_WIDTH;x++)
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blends[y*SPATIAL_WIDTH+x]=layout_blend((x+0.5)/SPATIAL_WIDTH,(y+0.5)/SPATIAL_HEIGHT);
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initialized=true;
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}
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const char alphabet[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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size_t capacity=SPATIAL_PIXELS*4+256;char *line=malloc(capacity);if(!line)return NULL;
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size_t used=snprintf(line,capacity,"{\"command\":\"image\",\"priority\":%u,\"duration\":1500,\"origin\":\"HyperDRM\",\"imagewidth\":%u,\"imageheight\":%u,\"format\":\"rgb\",\"name\":\"Histogram colors\",\"imagedata\":\"",priority,SPATIAL_WIDTH,SPATIAL_HEIGHT);
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for(unsigned i=0;i<SPATIAL_PIXELS;i++){
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unsigned char rgb[3],color[3];LedBlend b=blends[i];blend_color(regions[b.a],regions[b.b],b.weight,rgb);boost_color(rgb,color);
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line[used++]=alphabet[color[0]>>2];line[used++]=alphabet[((color[0]&3)<<4)|(color[1]>>4)];
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line[used++]=alphabet[((color[1]&15)<<2)|(color[2]>>6)];line[used++]=alphabet[color[2]&63];
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}
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line[used++]='"';line[used++]='}';line[used++]='\n';line[used]=0;return line;
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}
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#endif
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