changeset 1740:c77b5ab7b99d

camera work
author drewp@bigasterisk.com
date Fri, 01 Sep 2023 17:13:51 -0700
parents 28a3e35bc23f
children 097bfd91187d
files espNode/cam.yaml espNode/component/cam.h espNode/readcam.py espNode/signalgen/main.py
diffstat 4 files changed, 201 insertions(+), 53 deletions(-) [+]
line wrap: on
line diff
--- a/espNode/cam.yaml	Fri Sep 01 17:12:06 2023 -0700
+++ b/espNode/cam.yaml	Fri Sep 01 17:13:51 2023 -0700
@@ -53,3 +53,62 @@
       // App.register_component(camc);
       return {camc};
 
+
+# ffplay -i http://10.2.0.22:81/stream -vf hqdn3d=luma_spatial=0:chroma_spatial=50:luma_tmp=10:chroma_tmp=10
+
+# maybe this first:
+#  vaguedenoiser=threshold=5
+
+
+
+
+
+# # https://randomnerdtutorials.com/esp32-cam-ai-thinker-pinout/
+# esp32_camera:
+#   external_clock:
+#     pin: GPIO0
+#     frequency: 20MHz
+#   i2c_pins:
+#     sda: GPIO26
+#     scl: GPIO27
+#   data_pins: [GPIO5, GPIO18, GPIO19, GPIO21, GPIO36, GPIO39, GPIO34, GPIO35]
+#   vsync_pin: GPIO25
+#   href_pin: GPIO23
+#   pixel_clock_pin: GPIO22
+#   power_down_pin: GPIO32
+
+#   name: camera
+
+#   # https://github.com/esphome/esphome/blob/dev/esphome/components/esp32_camera/esp32_camera.cpp#L265 says a 'stream' is 5 sec long
+
+#   # setting to 5 causes 'Setup Failed: ERROR'
+#   # max_framerate: 4 fps
+#   # https://github.com/raphaelbs/esp32-cam-ai-thinker#capabilities says camera
+#   # is likely ov2640 with these native resolutions:
+#   # uxga=1600x1200 svga=800x600 cif=400x296
+  
+#   #   160x120 (QQVGA)    'Got invalid frame', then no more
+#   #   128x160 (QQVGA2)
+#   #   176x144 (QCIF)     fps: 25 jpg: 20 img: 2KB burst of frames then stopped. 
+#   #                      fps: 20 jpg: 20 no frames
+#   #   240x176 (HQVGA)
+#   #   320x240 (QVGA)     fps: 10 jpg: 20 some frames, 4.5KB
+#   #   400x296 (CIF)
+#   #   640x480 (VGA)      fps: 4 jpg: 10 works,  20KB
+#   #   800x600 (SVGA)
+#   #   1024x768 (XGA)
+#   #   1280x1024 (SXGA)   fps: 1  works
+#   #   1600x1200 (UXGA)
+
+#   resolution: 320x240
+  
+#   # 10 to 63. default=10. higher is
+#   # worse. https://github.com/esphome/esphome/blob/6682c43dfaeb1c006943ae546145e5f22262cadb/esphome/components/esp32_camera/__init__.py#L84
+#   # sets the lower limit to 10, but
+#   # https://github.com/raphaelbs/esp32-cam-ai-thinker/blob/master/components/ov2640/sensors/ov2640.c#L345
+#   # suggests that it might be 0 (for an ov2640, anyway).
+#   # jpeg_quality: 10
+
+# esp32_camera_web_server:
+#   - {port: 8000, mode: stream}
+#   - {port: 8001, mode: snapshot}
--- a/espNode/component/cam.h	Fri Sep 01 17:12:06 2023 -0700
+++ b/espNode/component/cam.h	Fri Sep 01 17:13:51 2023 -0700
@@ -33,6 +33,17 @@
 
 static const char *TAG = "cam";
 
+#define PART_BOUNDARY "123456789000000000000987654321"
+static const char *_STREAM_CONTENT_TYPE =
+    "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
+static const char *_STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
+static const char *_STREAM_PART =
+    "Content-Type: image/jpeg\r\nContent-Length: %u\r\nX-Timestamp: "
+    "%d.%06d\r\n\r\n";
+
+httpd_handle_t camera_httpd = NULL;
+httpd_handle_t stream_httpd = NULL;
+
 typedef struct {
   httpd_req_t *req;
   size_t len;
@@ -66,7 +77,7 @@
     config.pin_pwdn = PWDN_GPIO_NUM;
     config.pin_reset = RESET_GPIO_NUM;
     config.xclk_freq_hz = 20000000;
-    config.frame_size = FRAMESIZE_QVGA;
+    config.frame_size = FRAMESIZE_SVGA;
     config.pixel_format = PIXFORMAT_JPEG;  // for streaming
     // config.pixel_format = PIXFORMAT_RGB565; // for face detection/recognition
     //  config.grab_mode = CAMERA_GRAB_WHEN_EMPTY;
@@ -84,6 +95,7 @@
     esp_err_t err = esp_camera_init(&config);
     if (err != ESP_OK) {
       Serial.printf("Camera init failed with error 0x%x", err);
+      mark_failed();
       return;
     }
 
@@ -143,10 +155,90 @@
     return res;
   }
 
+  static esp_err_t stream_handler(httpd_req_t *req) {
+    camera_fb_t *fb = NULL;
+    struct timeval _timestamp;
+    esp_err_t res = ESP_OK;
+    size_t _jpg_buf_len = 0;
+    uint8_t *_jpg_buf = NULL;
+    char *part_buf[128];
+
+    static int64_t last_frame = 0;
+    if (!last_frame) {
+      last_frame = esp_timer_get_time();
+    }
+
+    res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
+    if (res != ESP_OK) {
+      return res;
+    }
+
+    while (true) {
+      fb = esp_camera_fb_get();
+      if (!fb) {
+        ESP_LOGE(TAG, "Camera capture failed");
+        res = ESP_FAIL;
+      } else {
+        _timestamp.tv_sec = fb->timestamp.tv_sec;
+        _timestamp.tv_usec = fb->timestamp.tv_usec;
+        if (fb->format != PIXFORMAT_JPEG) {
+          ESP_LOGI(TAG, "format was %d; sw convert to jpeg", fb->format);
+          bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
+          esp_camera_fb_return(fb);
+          fb = NULL;
+          if (!jpeg_converted) {
+            ESP_LOGE(TAG, "JPEG compression failed");
+            res = ESP_FAIL;
+          }
+        } else {
+          _jpg_buf_len = fb->len;
+          _jpg_buf = fb->buf;
+        }
+      }
+      if (res == ESP_OK) {
+        res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY,
+                                    strlen(_STREAM_BOUNDARY));
+      }
+      if (res == ESP_OK) {
+        size_t hlen =
+            snprintf((char *)part_buf, 128, _STREAM_PART, _jpg_buf_len,
+                     _timestamp.tv_sec, _timestamp.tv_usec);
+        res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
+      }
+      if (res == ESP_OK) {
+        res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
+      }
+      if (fb) {
+        esp_camera_fb_return(fb);
+        fb = NULL;
+        _jpg_buf = NULL;
+      } else if (_jpg_buf) {
+        free(_jpg_buf);
+        _jpg_buf = NULL;
+      }
+      if (res != ESP_OK) {
+        ESP_LOGE(TAG, "send frame failed failed");
+        break;
+      }
+      int64_t fr_end = esp_timer_get_time();
+
+      int64_t frame_time = fr_end - last_frame;
+      frame_time /= 1000;
+      uint32_t avg_frame_time = -1;
+      // ESP_LOGI(TAG, "MJPG: %uB %ums (%.1ffps), AVG: %ums (%.1ffps)"
+      //          ,
+      //          (uint32_t)(_jpg_buf_len), (uint32_t)frame_time,
+      //          1000.0 / (uint32_t)frame_time, avg_frame_time,
+      //          1000.0 / avg_frame_time);
+    }
+
+    return res;
+  }
+
   void startCameraServer() {
     ESP_LOGD(TAG, "startCameraServer");
     httpd_config_t config = HTTPD_DEFAULT_CONFIG();
-    config.server_port = 8000;
+    config.server_port = 80;
     config.max_uri_handlers = 16;
 
     httpd_uri_t capture_uri = {.uri = "/capture",
@@ -154,18 +246,16 @@
                                .handler = capture_handler,
                                .user_ctx = NULL};
 
-    // httpd_uri_t stream_uri = {
-    //     .uri = "/stream",
-    //     .method = HTTP_GET,
-    //     .handler = stream_handler,
-    //     .user_ctx = NULL
-    // };
+    httpd_uri_t stream_uri = {.uri = "/stream",
+                              .method = HTTP_GET,
+                              .handler = stream_handler,
+                              .user_ctx = NULL};
 
     // ra_filter_init(&ra_filter, 20);
     ESP_LOGCONFIG(TAG, "startCameraServer2");
 
     ESP_LOGI(TAG, "Starting web server on port: '%d'", config.server_port);
-    httpd_handle_t camera_httpd = NULL;
+
     if (httpd_start(&camera_httpd, &config) == ESP_OK) {
       // httpd_register_uri_handler(camera_httpd, &index_uri);
       // httpd_register_uri_handler(camera_httpd, &cmd_uri);
@@ -180,13 +270,12 @@
       // httpd_register_uri_handler(camera_httpd, &win_uri);
     }
 
-    // config.server_port += 1;
-    // config.ctrl_port += 1;
-    // ESP_LOGI(TAG, "Starting stream server on port: '%d'",
-    // config.server_port); if (httpd_start(&stream_httpd, &config) == ESP_OK)
-    // {
-    //     httpd_register_uri_handler(stream_httpd, &stream_uri);
-    // }
+    config.server_port += 1;
+    config.ctrl_port += 1;
+    ESP_LOGI(TAG, "Starting stream server on port: '%d'", config.server_port);
+    if (httpd_start(&stream_httpd, &config) == ESP_OK) {
+      httpd_register_uri_handler(stream_httpd, &stream_uri);
+    }
   }
 
   void loop() override {}
--- a/espNode/readcam.py	Fri Sep 01 17:12:06 2023 -0700
+++ b/espNode/readcam.py	Fri Sep 01 17:13:51 2023 -0700
@@ -1,59 +1,56 @@
 #!camtest/bin/python3
+import asyncio
 import binascii
+import io
+import json
 import logging
-import time
-import io
 import os
-import json
-from docopt import docopt
-from standardservice.logsetup import log, verboseLogging
+import time
 
-logging.basicConfig(level=logging.INFO)
+import apriltag
+import cv2
+import numpy
+from aioesphomeapi.client import APIClient
+from aioesphomeapi.model import CameraState
 from aiohttp import web
 from aiohttp.web import Response
 from aiohttp_sse import sse_response
-
-import asyncio
+from docopt import docopt
 
-from aioesphomeapi import APIClient
-from aioesphomeapi.model import CameraState
-import apriltag
-import cv2
-import numpy
+logging.basicConfig(level=logging.INFO)
+log = logging.getLogger(__name__)
+
 
 class CameraReceiver:
-    def __init__(self, loop, host):
+
+    def __init__(self, host):
         self.lastFrameTime = None
-        self.loop = loop
         self.host = host
         self.lastFrame = b"", ''
         self.recent = []
 
     async def start(self):
         try:
-            self.c = c = APIClient(self.loop, 
-            self.host,
-            6053, 'MyPassword')
+            self.c = c = APIClient(self.host, 6053, 'MyPassword')
             await c.connect(login=True)
             await c.subscribe_states(on_state=self.on_state)
         except OSError:
-            loop.stop()
             return
-        self.loop.create_task(self.start_requesting_image_stream_forever())
+        self.t = asyncio.create_task(
+            self.start_requesting_image_stream_forever())
 
     async def start_requesting_image_stream_forever(self):
         while True:
             try:
                 await self.c.request_image_stream()
             except AttributeError:
-                self.loop.stop()
                 return
             # https://github.com/esphome/esphome/blob/dev/esphome/components/esp32_camera/esp32_camera.cpp#L265 says a 'stream' is 5 sec long
             await asyncio.sleep(4)
 
     def on_state(self, s):
         if isinstance(s, CameraState):
-            jpg = s.image
+            jpg = s.data
             if len(self.recent) > 10:
                 self.recent = self.recent[-10:]
 
@@ -64,8 +61,7 @@
             print('other on_state', s)
 
     def analyze(self, jpg):
-        img = cv2.imdecode(numpy.asarray(bytearray(jpg)),
-                           cv2.IMREAD_GRAYSCALE)
+        img = cv2.imdecode(numpy.asarray(bytearray(jpg)), cv2.IMREAD_GRAYSCALE)
         result = detector.detect(img)
         msg = {}
         if result:
@@ -92,6 +88,7 @@
 def imageUri(jpg):
     return 'data:image/jpeg;base64,' + binascii.b2a_base64(jpg).decode('ascii')
 
+
 async def stream(request):
     async with sse_response(request) as resp:
         await resp.send(imageUri(recv.lastFrame[0]))
@@ -101,6 +98,7 @@
             await resp.send(imageUri(frame))
     return resp
 
+
 async def index(request):
     d = r"""
         <html>
@@ -146,31 +144,26 @@
 this
 
 Usage:
-  this [-v] [--cam host] [--port to_serve]
+this [-v] [--cam host] [--port to_serve]
 
 Options:
-  -v --verbose       more log
-  --port n           http server [default: 10020]
-  --cam host         hostname of esphome server
+--port n           http server [default: 10020]
+--cam host         hostname of esphome server
 ''')
 
-verboseLogging(arguments['--verbose'])
 logging.getLogger('aioesphomeapi.connection').setLevel(logging.INFO)
 
-loop = asyncio.get_event_loop()
+recv = CameraReceiver(arguments['--cam'])
 
-recv = CameraReceiver(loop, arguments['--cam'])
 detector = apriltag.Detector()
 
 f = recv.start()
-loop.create_task(f)
+async def starter(app): 
+    asyncio.create_task(f)
 
 start_time = time.time()
 app = web.Application()
+app.on_startup.append(starter)
 app.router.add_route('GET', '/stream', stream)
 app.router.add_route('GET', '/', index)
-try:
-    web.run_app(app, host='0.0.0.0', port=int(arguments['--port']))
-except RuntimeError as e:
-    log.error(e)
-log.info(f'run_app stopped after {time.time() - start_time} sec')
\ No newline at end of file
+web.run_app(app, port=int(arguments['--port']))
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/espNode/signalgen/main.py	Fri Sep 01 17:13:51 2023 -0700
@@ -0,0 +1,7 @@
+from machine import Pin, PWM
+pwm0 = PWM(Pin(23), freq=31250, duty=512)
+
+
+
+
+print(pwm0)