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esp32cam-demo
kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Alan 2020-11-11 21:52:26 +00:00 zatwierdzone przez GitHub
rodzic 983be625a6
commit 422783b6e2
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24
esp32cam-demo.ino
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@ -49,10 +49,7 @@
// Camera related
const bool flashRequired = 1; // If flash to be used when capturing image (1 = yes)
const framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_VGA;
const int I_WIDTH = 640; // image dimensions (used for converting image to rgb)
const int I_HEIGHT = 480;
// Image resolution:
const framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_VGA; // Image resolution:
// default = "const framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_XGA"
// 160x120 (QQVGA), 128x160 (QQVGA2), 176x144 (QCIF), 240x176 (HQVGA),
// 320x240 (QVGA), 400x296 (CIF), 640x480 (VGA, default), 800x600 (SVGA),
@ -730,14 +727,15 @@ void readRGBImage() {
// capture live image (jpg)
camera_fb_t * fb = NULL;
fb = esp_camera_fb_get();
if (!fb) tReply+=" -Error capturing image from camera- ";
if (!fb) tReply+=" -Error capturing image from camera- ";
tReply+="(Image resolution=" + String(fb->width) + "x" + String(fb->height) + ")"; // display image resolution
// allocate memory to store rgb data in psram
if (!psramFound()) tReply+=" -Error no psram found- ";
void *ptrVal = NULL;
uint32_t ARRAY_LENGTH = I_WIDTH * I_HEIGHT * 3; // number of pixels in the jpg image x 3
bool memRes = ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM);
if (!memRes) tReply+=" -Error allocating memory for RGB data- ";
uint32_t ARRAY_LENGTH = fb->width * fb->height * 3; // number of pixels in the jpg image x 3
if (heap_caps_get_free_size( MALLOC_CAP_SPIRAM) < ARRAY_LENGTH) tReply+=" -Error not enough free psram to store rgb data- "; // check free memory in psram
ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM);
uint8_t *rgb = (uint8_t *)ptrVal;
// convert jpg to rgb (store in an array 'rgb')
@ -747,8 +745,8 @@ void readRGBImage() {
// display some of the resulting data
for (uint32_t i = 0; i < resultsToShow; i++) {
// // x and y coordinate of the pixel
// uint16_t x = i % I_WIDTH;
// uint16_t y = floor(i / I_WIDTH);
// uint16_t x = i % fb->width;
// uint16_t y = floor(i / fb->width);
if (i%3 == 0) tReply+="B";
else if (i%3 == 1) tReply+="G";
else if (i%3 == 2) tReply+="R";
@ -764,9 +762,9 @@ void readRGBImage() {
aGreen+=rgb[i+1];
aRed+=rgb[i+2];
}
aRed = aRed / (I_WIDTH * I_HEIGHT);
aGreen = aGreen / (I_WIDTH * I_HEIGHT);
aBlue = aBlue / (I_WIDTH * I_HEIGHT);
aRed = aRed / (fb->width * fb->height);
aGreen = aGreen / (fb->width * fb->height);
aBlue = aBlue / (fb->width * fb->height);
tReply+=" Average Red = " + String(aRed);
tReply+=", Average Green = " + String(aGreen);
tReply+=", Average Blue = " + String(aBlue);