/home/orangepi/code/mpp/osal/inc/mpp_time.h:29: error: expected ‘,’ or ‘...’ before numeric constant In file included from /home/orangepi/code/mpp_rtsp/MppDecode.h:17, from /home/orangepi/code/mpp_rtsp/MppDecode.cpp:5: /home/orangepi/code/mpp/osal/inc/mpp_time.h:29:44: error: expected ‘,’ or ‘...’ before numeric constant 29 | #define msleep(x) usleep(x * 1000) | ^~~~
时间: 2023-09-12 22:09:48 浏览: 44
这个错误是因为在 `mpp_time.h` 头文件中的 `msleep` 宏定义中出现了一个预处理器错误。这个错误可能是由于在宏定义中使用了一个数字常量而没有给它命名,或者在头文件中定义了一个与 `msleep` 名称相同的常量。
你可以在 `MppDecode.cpp` 文件中使用 `#undef msleep` 来取消 `msleep` 宏定义,然后按照需要重新定义它。或者你也可以在 `mpp_time.h` 文件中给数字常量命名,例如:
```c
#define MSLEEP_TIME_FACTOR 1000
#define msleep(x) usleep(x * MSLEEP_TIME_FACTOR)
```
这样就可以避免这个错误了。
相关问题
#if defined(_WIN32) && !defined(__MINGW32CE__) #include <windows.h> #define msleep Sleep #define sleep(x) Sleep(x *1000) #else #define msleep(x) usleep(x * 1000) #endif这一段代码发生了这样一个报错/home/orangepi/code/mpp/osal/inc/mpp_time.h:29: error: expected ‘,’ or ‘...’ before numeric constant In file included from /home/orangepi/code/mpp_rtsp/MppDecode.h:17, from /home/orangepi/code/mpp_rtsp/MppDecode.cpp:5: /home/orangepi/code/mpp/osal/inc/mpp_time.h:29:44: error: expected ‘,’ or ‘...’ before numeric constant 29 | #define msleep(x) usleep(x * 1000) | ^~~~
这个报错是因为在这段代码中,宏定义 `msleep(x)` 的后面没有加上分号,导致编译器无法正确解析代码。你可以在这行代码的末尾加上分号,如下所示:
```
#define msleep(x) usleep(x * 1000);
```
这样就可以解决这个报错了。另外,注意在使用宏定义时,最好加上括号,以避免优先级问题导致的错误。例如:
```
msleep(1000); // 最好改为 msleep(1000);
```
error while loading shared libraries: /athrun/lib/librockchip_mpp.so.1: file too short
The error message "error while loading shared libraries: /athrun/lib/librockchip_mpp.so.1: file too short" typically indicates that the shared library file `librockchip_mpp.so.1` is corrupted or incomplete. This can occur due to various reasons, such as incomplete installation or file corruption.
To resolve this issue, you can try the following steps:
1. First, check if the library file exists in the specified path (`/athrun/lib/`). You can use the `ls` command to verify its presence:
```
ls /athrun/lib/librockchip_mpp.so.1
```
2. If the file exists, try reinstalling the library by downloading it from a reliable source or reinstalling the package it belongs to. Make sure to download or install the complete and uncorrupted file.
3. If the file doesn't exist or reinstalling doesn't solve the issue, it's possible that there was an error during the installation or an issue with the file itself. In such cases, you may need to contact the software or library provider for further assistance.
Additionally, you can also check if there are any dependencies required by the library and make sure they are installed correctly. The `ldd` command can help you identify the dependencies:
```
ldd /athrun/lib/librockchip_mpp.so.1
```
Make sure all the listed dependencies are present and properly installed on your system.
If the issue persists or you need further assistance, please provide more details about your system, the software or package you are working with, and any additional error messages you encounter.