public static IntPtr libvlc_new(string[] arguments)
{
PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper();
argv.pointers = new IntPtr[11];
for (int i = 0; i < arguments.Length; i++)
{
argv.pointers[i] = Marshal.StringToHGlobalAnsi(arguments[i]);
}
IntPtr argvPtr = IntPtr.Zero;
try
{
int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper));
argvPtr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(argv, argvPtr, false);
return(libvlc_new(arguments.Length, argvPtr));
}
finally
{
for (int i = 0; i < arguments.Length + 1; i++)
{
if (argv.pointers[i] != IntPtr.Zero)
{
Marshal.FreeHGlobal(argv.pointers[i]);
}
}
if (argvPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(argvPtr);
}
}
}
//将string []转换为IntPtr
public static IntPtr StrToIntPtr(string[] args)
{
try
{
IntPtr ip_args = IntPtr.Zero;
PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper();
argv.pointers = new IntPtr[11];
for (int i = 0; i < args.Length; i++)
{
argv.pointers[i] = Marshal.StringToHGlobalAnsi(args[i]);
}
int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper));
ip_args = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(argv, ip_args, false);
return(ip_args);
}
catch (Exception)
{
return(IntPtr.Zero);
}
}
/// <summary>
/// 传入播放参数
/// </summary>
/// <param name="arguments"></param>
/// <returns></returns>
public static IntPtr libvlc_new(string[] arguments)
{
PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper();
argv.pointers = new IntPtr[11];
for (int i = 0; i < arguments.Length; i++)
{
argv.pointers[i] = Marshal.StringToHGlobalAnsi(arguments[i]); //将托管 System.String 中的内容复制到非托管内存，并在复制时转换为 ANSI 格式。
}
IntPtr argvPtr = IntPtr.Zero;
try
{
int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper)); //返回非托管类型的大小（以字节为单位）。
argvPtr = Marshal.AllocHGlobal(size); //从进程的非托管内存中分配内存。
Marshal.StructureToPtr(argv, argvPtr, false); //将数据从托管对象封送到非托管内存块。
return(libvlc_new(arguments.Length, argvPtr)); //创建一个libvlc实例，它是引用计数的
}
finally
{
for (int i = 0; i < arguments.Length + 1; i++)
{
if (argv.pointers[i] != IntPtr.Zero)
{
Marshal.FreeHGlobal(argv.pointers[i]); //释放以前使用 System.Runtime.InteropServices.Marshal.AllocHGlobal(System.IntPtr) 从进程的非托管内存中分配的内存。
}
}
if (argvPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(argvPtr); /* 释放以前使用 System.Runtime.InteropServices.Marshal.AllocHGlobal(System.IntPtr) 从进程的非托管内存中分配的内存。 */
}
}
}
public static IntPtr libvlc_new(string[] arguments)
{
PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper();
argv.pointers = new IntPtr[11];
for (int i = 0; i < arguments.Length; i++)
{
argv.pointers[i] = Marshal.StringToHGlobalAnsi(arguments[i]);
}
IntPtr argvPtr = IntPtr.Zero;
try
{
int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper));
argvPtr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(argv, argvPtr, false);
return libvlc_new(arguments.Length, argvPtr);
}
finally
{
for (int i = 0; i < arguments.Length + 1; i++)
{
if (argv.pointers[i] != IntPtr.Zero)
{
Marshal.FreeHGlobal(argv.pointers[i]);
}
}
if (argvPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(argvPtr);
}
}
}
