1.SS528V100 22AP30Hi3531DV200开发注意事项
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SS528V100 22AP30Hi3531DV200开发注意事项
一、源码在反复开关视频采集编码程序一定次数后,源码mpp会全局初始化失败,源码只能重启开发板才能恢复。源码初步排查有可能是源码VB设置cfg失败,尝试在启动编码程序时,源码付费起名源码调用hi_mpi_sys_exit()和mpi_vb_exit(),源码再调用想要的init(),但是源码出问题的时候,仍旧是源码恢复不了;
解答思路:这种大概率是程序获取了vb没释放导致的,处理方式有两种:1.排查程序资源释放,源码在调用hi_mpi_sys_exit()和mpi_vb_exit()确保所有vb正确释放;2.开启强制销毁vb,源码这么做有一定的源码风险,建议优先按方式1处理;
二、源码SSV 光电冗余备份,源码光口不自识别千兆
**问题描述**使用RTLF网卡芯片,源码作为光电冗余备份,光口仅能识别到Mbps,UE源码版编译需要使用ethtool工具设置后方可识别到1Gbps,电口正常;请问如何设置能使光口主动识别到千兆?所处环境:室内,SFP-GE-LX-SM千兆单模光模块,RTLF网卡芯片
解答思路:用ethtol工具强制千兆;
三、ss 系统启动后,第一次执行sample_audio 录音失败
问题描述:1、系统启动(上电启动或reboot重启)后,第一次执行sample_audio录音失败。怎样辨别正版源码2、之后再次执行就正常了。所处环境:ubuntu . lts server
解答思路:主从模式改一下。
四、ssv uboot 不需要压缩,怎么去除
问题描述:ssv uboot 启动慢,该怎么去除压缩?所处环境:ubuntu . lts server
解决思路:要去除SSV U-Boot的压缩,你可以按照以下步骤进行操作:1、epoll移植win源码在Ubuntu . LTS Server上安装所需的工具链。你可以使用以下命令安装:sudo apt-get update sudo apt-get install build-essential;2、下载SSV U-Boot源代码。你可以从相关网站或官方渠道获取源代码,并将其解压到一个目录中;3、进入U-Boot源代码目录,并打开include/configs/your_board.h文件(其中your_board.h是你的开发板配置文件)。找到并注释掉以下两行代码(如果存在):#define CONFIG_SYS_BOOTM_LEN ( << ) #define CONFIG_SYS_MALLOC_LEN ( * * );4、freemodbus源码详解目录打开include/config_defaults.h文件,并找到以下行:#define CONFIG_SYS_TEXT_BASE 0x。将该行修改为:#define CONFIG_SYS_TEXT_BASE 0x;5、进入U-Boot源代码目录,并执行以下命令编译U-Boot:make your_board_defconfig make;6、编译完成后,在输出目录中找到生成的u-boot.bin文件。7、将生成的u-boot.bin文件刷写至你的SSV开发板中。这样,你就成功去除了SSV U-Boot的压缩,从而提高了启动速度。请确保在进行任何修改之前备份好相关文件,以防止意外情况发生。
解决思路2:使用预编译的uboot镜像;更新最新版SDK,E
五、SS(HiD)编解码,图形层和视频层都绑定在同一设备层上的话,可以叠加显示吗?
问题描述:实际场景需求:图形层做的是交互,视频层做的是拉流显示,要叠加显示
解决思路:一般是用colorkey的方式让图形层透明让视频层显示出来。设置的是hifb的参数,只要把lvgl的背景色设置为colorkey的值就可以透明了
六、用ffmpeg拉多个视频流的话,是不是一个流开一个vdec通道?解决思路:当使用FFmpeg来提取多个视频流时,通常会为每个视频流打开一个独立的视频解码器(vdec)通道。每个视频流都会被视为一个独立的输入,并通过相应的解码器进行解码。先从flv取出h拿去解码,再使用,不能直接使用。
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#include <windows.h>
#include "cefsimple/simple_app.h"
#include "include/cef_sandbox_win.h"
// Set to 0 to disable sandbox support.
#define CEF_ENABLE_SANDBOX 1
#if CEF_ENABLE_SANDBOX
// The cef_sandbox.lib static library is currently built with VS. It may not
// link successfully with other VS versions.
#pragma comment(lib, "cef_sandbox.lib")
#endif
// Entry point function for all processes.
int APIENTRY wWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow) {
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
void* sandbox_info = NULL;
#if CEF_ENABLE_SANDBOX
// Manage the life span of the sandbox information object. This is necessary
// for sandbox support on Windows. See cef_sandbox_win.h for complete details.
CefScopedSandboxInfo scoped_sandbox;
sandbox_info = scoped_sandbox.sandbox_info();
#endif
// Provide CEF with command-line arguments.
CefMainArgs main_args(hInstance);
// SimpleApp implements application-level callbacks. It will create the first
// browser instance in OnContextInitialized() after CEF has initialized.
CefRefPtr<SimpleApp> app(new SimpleApp);
// CEF applications have multiple sub-processes (render, plugin, GPU, etc)
// that share the same executable. This function checks the command-line and,
// if this is a sub-process, executes the appropriate logic.
int exit_code = CefExecuteProcess(main_args, app.get(), sandbox_info);
if (exit_code >= 0) {
// The sub-process has completed so return here.
return exit_code;
}
// Specify CEF global settings here.
CefSettings settings;
#if !CEF_ENABLE_SANDBOX
settings.no_sandbox = true;
#endif
// Initialize CEF.
CefInitialize(main_args, settings, app.get(), sandbox_info);
// Run the CEF message loop. This will block until CefQuitMessageLoop() is
// called.
CefRunMessageLoop();
// Shut down CEF.
CefShutdown();
return 0;
}
SimpleApp
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// simple_app.h
#include "include/cef_app.h"
class SimpleApp : public CefApp,
public CefBrowserProcessHandler {
public:
SimpleApp();
// CefApp methods:
virtual CefRefPtr<CefBrowserProcessHandler> GetBrowserProcessHandler()
OVERRIDE { return this; }
// CefBrowserProcessHandler methods:
virtual void OnContextInitialized() OVERRIDE;
private:
// Include the default reference counting implementation.
IMPLEMENT_REFCOUNTING(SimpleApp);
};
// simple_app.cpp
#include "cefsimple/simple_app.h"
#include <string>
#include "cefsimple/simple_handler.h"
#include "cefsimple/util.h"
#include "include/cef_browser.h"
#include "include/cef_command_line.h"
SimpleApp::SimpleApp() {
}
void SimpleApp::OnContextInitialized() {
REQUIRE_UI_THREAD();
// Information used when creating the native window.
CefWindowInfo window_info;
#if defined(OS_WIN)
// On Windows we need to specify certain flags that will be passed to
// CreateWindowEx().
window_info.SetAsPopup(NULL, "cefsimple");
#endif
// SimpleHandler implements browser-level callbacks.
CefRefPtr<SimpleHandler> handler(new SimpleHandler());
// Specify CEF browser settings here.
CefBrowserSettings browser_settings;
std::string url;
// Check if a "--url=" value was provided via the command-line. If so, use
// that instead of the default URL.
CefRefPtr<CefCommandLine> command_line =
CefCommandLine::GetGlobalCommandLine();
url = command_line->GetSwitchValue("url");
if (url.empty())
url = "xxx";
// Create the first browser window.
CefBrowserHost::CreateBrowserSync(window_info, handler.get(), url,
browser_settings, NULL);
}
SimpleHandler
SimpleHandler è´è´£å¤çæµè§å¨çº§å«çåè°æ¹æ³ãè¿äºåè°æ¹æ³ä¼å¨æµè§å¨è¿ç¨ä¸æ§è¡ãå¨è¿ä¸ªé¡¹ç®ä¸ï¼é对ææçæµè§å¨ä½¿ç¨ç¸åç CefClient å®ä¾ï¼ä½æ¯å¦æä½ æ¿æï¼å¯ä»¥å¨èªå·±çåºç¨ç¨åºä¸ä½¿ç¨ä¸åç CefClientå®ä¾çã
// simple_handler.h
#include "include/cef_client.h"
#include <list>
class SimpleHandler : public CefClient,
public CefDisplayHandler,
public CefLifeSpanHandler,
public CefLoadHandler {
public:
SimpleHandler();
~SimpleHandler();
// Provide access to the single global instance of this object.
static SimpleHandler* GetInstance();
// CefClient methods:
virtual CefRefPtr<CefDisplayHandler> GetDisplayHandler() OVERRIDE {
return this;
}
virtual CefRefPtr<CefLifeSpanHandler> GetLifeSpanHandler() OVERRIDE {
return this;
}
virtual CefRefPtr<CefLoadHandler> GetLoadHandler() OVERRIDE {
return this;
}
// CefDisplayHandler methods:
virtual void OnTitleChange(CefRefPtr<CefBrowser> browser,
const CefString& title) OVERRIDE;
// CefLifeSpanHandler methods:
virtual void OnAfterCreated(CefRefPtr<CefBrowser> browser) OVERRIDE;
virtual void OnBeforeClose(CefRefPtr<CefBrowser> browser) OVERRIDE;
// CefLoadHandler methods:
virtual void OnLoadError(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
ErrorCode errorCode,
const CefString& errorText,
const CefString& failedUrl) OVERRIDE;
// Request that all existing browser windows close.
void CloseAllBrowsers(bool force_close);
private:
// List of existing browser windows. Only accessed on the CEF UI thread.
typedef std::list<CefRefPtr<CefBrowser> > BrowserList;
BrowserList browser_list_;
// Include the default reference counting implementation.
IMPLEMENT_REFCOUNTING(SimpleHandler);
};
// simple_handler.cpp
#include "cefsimple/simple_handler.h"
#include <sstream>
#include <string>
#include "cefsimple/util.h"
#include "include/cef_app.h"
#include "include/cef_runnable.h"
namespace {
SimpleHandler* g_instance = NULL;
} // namespace
SimpleHandler::SimpleHandler() {
ASSERT(!g_instance);
g_instance = this;
}
SimpleHandler::~SimpleHandler() {
g_instance = NULL;
}
// static
SimpleHandler* SimpleHandler::GetInstance() {
return g_instance;
}
void SimpleHandler::OnAfterCreated(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD();
// Add to the list of existing browsers.
browser_list_.push_back(browser);
}
void SimpleHandler::OnBeforeClose(CefRefPtr<CefBrowser> browser) {
REQUIRE_UI_THREAD();
// Remove from the list of existing browsers.
BrowserList::iterator bit = browser_list_.begin();
for (; bit != browser_list_.end(); ++bit) {
if ((*bit)->IsSame(browser)) {
browser_list_.erase(bit);
break;
}
}
if (browser_list_.empty()) {
// All browser windows have closed. Quit the application message loop.
CefQuitMessageLoop();
}
}
void SimpleHandler::OnLoadError(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
ErrorCode errorCode,
const CefString& errorText,
const CefString& failedUrl) {
REQUIRE_UI_THREAD();
// Don't display an error for downloaded files.
if (errorCode == ERR_ABORTED)
return;
// Display a load error message.
std::stringstream ss;
ss << "<html><body bgcolor=\"white\">"
"<h2>Failed to load URL " << std::string(failedUrl) <<
" with error " << std::string(errorText) << " (" << errorCode <<
").</h2></body></html>";
frame->LoadString(ss.str(), failedUrl);
}