[2/4]解决USB摄像头打开相机预览界面绿屏

liyujie

2025-08-28 d9927380ed7c8366f762049be9f3fee225860833

 android/hardware/aw/camera/3_4/common.cpp
..
..
@@ -57,6 +57,39 @@
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   }
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 }
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+bool saveBuffers(const char *path,
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+                 void *y_addr,
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+                 void *cr_addr,
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+                 unsigned int y_size,
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+                 unsigned int cr_size,
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+                 bool is_oneframe) {
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+  int fd;
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+  HAL_LOGD("Debug to save a frame!");
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+  if((access(path, 0) != -1) && (is_oneframe)) {
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+    HAL_LOGD("File %s is exists!!!\n", path);
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+  }
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+  if(is_oneframe)
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+    fd = open(path, O_CREAT|O_RDWR|O_TRUNC, 0777); //save one frame data
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+  else
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+    fd = open(path, O_CREAT|O_RDWR|O_APPEND, 0777); //save more frames
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+  if(!fd) {
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+    HAL_LOGE("Open file error");
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+    return false;
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+  }
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+  if(write(fd, y_addr, y_size)){
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+    HAL_LOGD("Write Y data successfully");
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+    if(write(fd, cr_addr, cr_size)){
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+      HAL_LOGD("Write U data successfully");
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+      close(fd);
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+      return true;
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+    }
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+  }
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+  HAL_LOGE("Write file fail");
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+  close(fd);
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+  return false;
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+}
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+
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+
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 bool saveSizes(int width, int height) {
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   int fd;
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   char buf[128];