reduce preview window size to save cpu.

photobooth-app · Oct 25, 2024 · f694bdb · f694bdb
1 parent e6fe180
commit f694bdb
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Showing 4 changed files with 3 additions and 6 deletions.
diff --git a/node/services/backends/cameras/picamera2.py b/node/services/backends/cameras/picamera2.py
@@ -82,7 +82,7 @@ def start(self, nominal_framerate: int = None):
             # Preview.QT seems to work reasonably well, so use this for now hardcoded.
             # Further refs:
             # https://github.com/raspberrypi/picamera2/issues/989
-            self._picamera2.start_preview(Preview.QT, x=0, y=0, width=800, height=480)
+            self._picamera2.start_preview(Preview.QT, x=0, y=0, width=400, height=240)
             # self._qpicamera2 = QPicamera2(self._picamera2, width=800, height=480, keep_ar=True)
         else:
             pass

diff --git a/node/services/backends/cameras/virtualcamera.py b/node/services/backends/cameras/virtualcamera.py
@@ -36,8 +36,6 @@ def wait_for_lores_image(self):
         imarray = numpy.random.rand(200, 200, 3) * 255
         random_image = Image.fromarray(imarray.astype("uint8"), "RGB")
         random_image.save(byte_io, format="JPEG", quality=50)
-        # random_image = Image.new("RGB", (64, 64), color="green")
-        # random_image.save(byte_io, format="JPEG", quality=50)
 
         return byte_io.getbuffer()
 

diff --git a/node/services/backends/io/gpiobackend.py b/node/services/backends/io/gpiobackend.py
@@ -119,8 +119,7 @@ def set_hardware_clock(self, enable: bool = True):
         # duty cycle = period / 2
         """
         PWM_CHANNEL = self._config.pwm_channel
-        PERIOD = int(1.0 / self._config.FPS_NOMINAL * 1e9)  # 1e9=ns
-        # PERIOD = int(0.5 / self._config.FPS_NOMINAL * 1e9)  # 1e9=ns  # double frequency!
+        PERIOD = int(1.0 / self._config.fps_nominal * 1e9)  # 1e9=ns
         DUTY_CYCLE = PERIOD // 2
         PWM_SYSFS = Path(f"/sys/class/pwm/{self._config.pwmchip}")
 

diff --git a/node/services/config/models.py b/node/services/config/models.py
@@ -14,7 +14,7 @@ class ConfigBackendGpio(BaseModel):
     trigger_out_pin_name: str = Field(default="GPIO17")
 
     enable_clock: bool = Field(default=False)
-    FPS_NOMINAL: int = Field(default=9)  # needs to be lower than cameras mode max fps to allow for control reserve
+    fps_nominal: int = Field(default=9)  # needs to be lower than cameras mode max fps to allow for control reserve
     pwmchip: str = Field(default="pwmchip2")  # pi5: pwmchip2, other pwmchip0
     pwm_channel: int = Field(default=2)  # pi5: 2, other 0