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esp32cam-demo
kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Update ESP32cam-demo.ino

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Alan 2025-03-08 09:07:31 +00:00 zatwierdzone przez GitHub
rodzic 597f4f5fc0
commit 7b4242e43e
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ESP32cam-demo.ino
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@ -102,7 +102,7 @@
// ---------------------------------------------------------------
char* stitle = "ESP32Cam"; // title of this sketch
char* sversion = "23Feb25"; // Sketch version
char* sversion = "08Mar25"; // Sketch version
framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_SVGA; // default camera resolution
// Resolutions available:
@ -1464,48 +1464,49 @@ bool getNTPtime(int sec) {
// ----------------------------------------------------------------
bool handleJPG() {
WiFiClient client = server.client(); // open link with client
WiFiClient client = server.client();
char buf[32];
// capture the jpg image from camera
camera_fb_t * fb = NULL;
camera_fb_t * fb = NULL;
for (int attempts = 0; attempts < 3; attempts++) {
fb = esp_camera_fb_get();
// there is a bug where this buffer can be from previous capture so as workaround it is discarded and captured again
esp_camera_fb_return(fb); // dispose the buffered image
fb = NULL; // reset to capture errors
fb = esp_camera_fb_get(); // get fresh image
if (!fb) {
if (serialDebug) Serial.println("Error: failed to capture image");
return 0;
}
if (fb && fb->buf && fb->len > 0) break;
esp_camera_fb_return(fb);
fb = NULL;
delay(100); // Delay before retry
}
// store image resolution info.
ImageResDetails = String(fb->width) + "x" + String(fb->height);
if (!fb) {
if (serialDebug) Serial.println("Error: failed to capture image after retries");
return 0;
}
// html to send a jpg
const char HEADER[] = "HTTP/1.1 200 OK\r\nAccess-Control-Allow-Origin: *\r\n";
const char CTNTTYPE[] = "Content-Type: image/jpeg\r\nContent-Length: ";
const int hdrLen = strlen(HEADER);
const int cntLen = strlen(CTNTTYPE);
client.write(HEADER, hdrLen);
client.write(CTNTTYPE, cntLen);
sprintf( buf, "%d\r\n\r\n", fb->len); // put text size in to 'buf' char array and send
client.write(buf, strlen(buf));
ImageResDetails = String(fb->width) + "x" + String(fb->height);
// send the captured jpg data
client.write((char *)fb->buf, fb->len);
const char HEADER[] = "HTTP/1.1 200 OK\r\nAccess-Control-Allow-Origin: *\r\n";
const char CTNTTYPE[] = "Content-Type: image/jpeg\r\nContent-Length: ";
client.write(HEADER, strlen(HEADER));
client.write(CTNTTYPE, strlen(CTNTTYPE));
// close network client connection
delay(3);
client.stop();
sprintf(buf, "%d\r\n\r\n", fb->len);
client.write(buf, strlen(buf));
esp_camera_fb_return(fb); // return camera frame buffer
if (client.connected()) {
client.write((char *)fb->buf, fb->len);
} else {
if (serialDebug) Serial.println("Error: client disconnected during transmission");
}
delay(3);
client.flush();
client.stop();
esp_camera_fb_return(fb);
fb = NULL;
return 1;
} // handleJPG
}
// ----------------------------------------------------------------