Use spatial histogram image input for HyperHDR instead of solid color

native/test_spatial_image.c

@@ -0,0 +1,17 @@
+#include <assert.h>
+#include <string.h>
+#include "spatial_image.h"
+int main(void){
+ (void)layout_from_json;
+ unsigned char regions[16][3];for(unsigned i=0;i<16;i++){regions[i][0]=11;regions[i][1]=22;regions[i][2]=33;}
+ char *command=spatial_image_command(regions,149);assert(command);
+ assert(strstr(command,"\"command\":\"image\"") && strstr(command,"\"priority\":149") && strstr(command,"\"format\":\"rgb\""));
+ const char *encoded=strstr(command,"\"imagedata\":\"")+13;
+ for(unsigned i=0;i<SPATIAL_PIXELS;i++)assert(!memcmp(encoded+i*4,"CxYh",4));
+ assert(!strcmp(encoded+SPATIAL_PIXELS*4,"\"}\n"));free(command);
+ for(unsigned i=0;i<16;i++){regions[i][0]=i*16;regions[i][1]=255-i*16;regions[i][2]=i*8;}
+ command=spatial_image_command(regions,149);encoded=strstr(command,"\"imagedata\":\"")+13;
+ assert(memcmp(encoded,encoded+(SPATIAL_WIDTH-1)*4,4));
+ assert(memcmp(encoded,encoded+(SPATIAL_PIXELS-SPATIAL_WIDTH)*4,4));free(command);
+ puts("PASS: image command, exact neutral RGB base64, spatial edge differences and cached geometry");return 0;
+}