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esp32cam-demo
kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Alan 2020-11-11 11:22:10 +00:00 zatwierdzone przez GitHub
rodzic 0f866e83de
commit 6418874f30
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esp32cam-demo.ino
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@ -661,8 +661,10 @@ void handleNotFound() {
// note: I do not know how high resolution you can go and not run out of memory // note: I do not know how high resolution you can go and not run out of memory
void readRGBImage() { void readRGBImage() {
Serial.println("Reading camera image as RGB");
String tHTML = "LIVE IMAGE AS RGB DATA: "; // reply to send to web client uint32_t resultsToShow = 40; // how much data to display
String tReply = "LIVE IMAGE AS RGB DATA: "; // reply to send to web client and serial port
// capture live image (jpg) // capture live image (jpg)
camera_fb_t * fb = NULL; camera_fb_t * fb = NULL;
@ -670,7 +672,7 @@ void readRGBImage() {
// allocate memory to store rgb data // allocate memory to store rgb data
void *ptrVal = NULL; void *ptrVal = NULL;
int ARRAY_LENGTH = I_WIDTH * I_HEIGHT * 3; // pixels in the image image x 3 uint32_t ARRAY_LENGTH = I_WIDTH * I_HEIGHT * 3; // pixels in the image image x 3
ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM); ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM);
uint8_t *rgb = (uint8_t *)ptrVal; uint8_t *rgb = (uint8_t *)ptrVal;
@ -678,28 +680,22 @@ void readRGBImage() {
fmt2rgb888(fb->buf, fb->len, PIXFORMAT_JPEG, rgb); fmt2rgb888(fb->buf, fb->len, PIXFORMAT_JPEG, rgb);
// display some of the result // display some of the result
int resultsToShow = 40; // how much data to display
String tOut;
Serial.println("RGB data: ");
for (uint32_t i = 0; i < resultsToShow; i++) { for (uint32_t i = 0; i < resultsToShow; i++) {
// const uint16_t x = i % I_WIDTH; // // x and y coordinate of the pixel
// const uint16_t y = floor(i / I_WIDTH); // uint16_t x = i % I_WIDTH;
tOut = ""; // uint16_t y = floor(i / I_WIDTH);
if (i%3 == 0) tOut="R"; if (i%3 == 0) tReply+=",B";
if (i%3 == 1) tOut="G"; else if (i%3 == 1) tReply+=",G";
if (i%3 == 2) tOut="B"; else if (i%3 == 2) tReply+=",R";
tOut+= String(rgb[i]); tReply+= String(rgb[i]);
tOut+=",";
Serial.print(tOut);
tHTML+=tOut;
} }
Serial.println();
// free up memory // free up memory
esp_camera_fb_return(fb); esp_camera_fb_return(fb);
heap_caps_free(ptrVal); heap_caps_free(ptrVal);
server.send ( 404, "text/plain", tHTML ); Serial.println(tReply);
server.send ( 404, "text/plain", tReply);
} }