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采集卡bug修复

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Ray
2025-10-29 16:28:06 +08:00
parent f0fc28d827
commit 7af3e2353a
3 changed files with 211 additions and 134 deletions
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142
preview.py
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@@ -9,16 +9,22 @@ import os
from config import config_manager
# 抑制OpenCV的警告信息（兼容不同版本）
os.environ['OPENCV_LOG_LEVEL'] = 'ERROR'
import sys
import io
os.environ['OPENCV_LOG_LEVEL'] = 'SILENT'
os.environ['OPENCV_IO_ENABLE_OPENEXR'] = '0'
try:
if hasattr(cv2, 'setLogLevel'):
# OpenCV 4.x
if hasattr(cv2, 'LOG_LEVEL_ERROR'):
if hasattr(cv2, 'LOG_LEVEL_SILENT'):
cv2.setLogLevel(cv2.LOG_LEVEL_SILENT)
elif hasattr(cv2, 'LOG_LEVEL_ERROR'):
cv2.setLogLevel(cv2.LOG_LEVEL_ERROR)
elif hasattr(cv2, 'utils'):
cv2.utils.setLogLevel(0) # 0=ERROR级别
cv2.utils.setLogLevel(0)
except Exception:
pass # 如果设置失败，继续执行
pass
class PreviewWindow:
"""采集卡预览窗口"""
@@ -40,65 +46,75 @@ class PreviewWindow:
print("⚠️ 没有活动的配置组，将尝试加载所有配置组")
active_groups = self.config['groups']
for i, group in enumerate(active_groups):
try:
cam_idx = group['camera_index']
print(f" 尝试打开采集卡 {cam_idx} ({group['name']})...")
cap = None
# 尝试多种后端打开
backends_to_try = [
(int(cam_idx), cv2.CAP_DSHOW),
(int(cam_idx), cv2.CAP_ANY),
(int(cam_idx), None),
]
for idx, backend in backends_to_try:
try:
with warnings.catch_warnings():
warnings.filterwarnings('ignore')
if backend is not None:
cap = cv2.VideoCapture(idx, backend)
else:
cap = cv2.VideoCapture(idx)
if cap.isOpened():
# 测试读取一帧
ret, test_frame = cap.read()
if ret and test_frame is not None:
break
else:
cap.release()
cap = None
except Exception:
if cap:
try:
cap.release()
except:
pass
cap = None
continue
if cap and cap.isOpened():
try:
cap.set(cv2.CAP_PROP_FRAME_WIDTH, group['camera_width'])
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, group['camera_height'])
except Exception as e:
print(f" ⚠️ 设置分辨率失败: {e}")
# 重定向stderr来抑制OpenCV的错误输出
old_stderr = sys.stderr
suppressed_output = io.StringIO()
try:
sys.stderr = suppressed_output
for i, group in enumerate(active_groups):
try:
cam_idx = group['camera_index']
print(f" 尝试打开采集卡 {cam_idx} ({group['name']})...")
self.caps[i] = {
'cap': cap,
'group': group,
'name': group['name']
}
loaded_count += 1
print(f" ✅ 采集卡 {cam_idx} 初始化成功")
else:
print(f" ❌ 采集卡 {cam_idx} 无法打开")
except Exception as e:
print(f" ❌ 采集卡 {group.get('camera_index', '?')} 初始化失败: {e}")
import traceback
traceback.print_exc()
cap = None
# 尝试多种后端打开
backends_to_try = [
(int(cam_idx), cv2.CAP_DSHOW),
(int(cam_idx), cv2.CAP_ANY),
(int(cam_idx), None),
]
for idx, backend in backends_to_try:
try:
with warnings.catch_warnings():
warnings.filterwarnings('ignore')
if backend is not None:
cap = cv2.VideoCapture(idx, backend)
else:
cap = cv2.VideoCapture(idx)
if cap.isOpened():
# 测试读取一帧
ret, test_frame = cap.read()
if ret and test_frame is not None:
break
else:
cap.release()
cap = None
except Exception:
if cap:
try:
cap.release()
except:
pass
cap = None
continue
if cap and cap.isOpened():
try:
cap.set(cv2.CAP_PROP_FRAME_WIDTH, group['camera_width'])
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, group['camera_height'])
except Exception as e:
print(f" ⚠️ 设置分辨率失败: {e}")
self.caps[i] = {
'cap': cap,
'group': group,
'name': group['name']
}
loaded_count += 1
print(f" ✅ 采集卡 {cam_idx} 初始化成功")
else:
print(f" ❌ 采集卡 {cam_idx} 无法打开")
except Exception as e:
print(f" ❌ 采集卡 {group.get('camera_index', '?')} 初始化失败: {e}")
import traceback
traceback.print_exc()
finally:
# 恢复stderr
sys.stderr = old_stderr
if loaded_count == 0:
print("⚠️ 警告：没有成功加载任何采集卡！")