查看FFmpeg开发指南的源代码

==修改 FFmpeg 代码==

:*1.  config.h 修改：

:在文件的末尾增加如下代码：

 #undef HAVE_IO_H
 #define HAVE_IO_H 0
 
 #undef HAVE_FLT_LIM
 #define HAVE_FLT_LIM 0
 
 #undef HAVE_FORK
 #define HAVE_FORK 0
 
 #undef HAVE_GLOB
 #define HAVE_GLOB 0
 
 #undef HAVE_MACH_ABSOLUTE_TIME
 #define HAVE_MACH_ABSOLUTE_TIME 0
 
 #undef HAVE_SYSCTL
 #define HAVE_SYSCTL 0
 
 #undef HAVE_ARC4RANDOM
 #define HAVE_ARC4RANDOM 0
 
 /* 增加 closesocket 定义 */
 #define closesocket close

:*2.  ./libavutil/atomic_gcc.h 修改：

 #ifdef SYLIXOS
 #define avpriv_atomic_int_get atomic_int_get_gcc
 static inline int atomic_int_get_gcc(volatile int *ptr)
 {
     INTREG reg;
     int val;
     API_AtomicLock(&reg);
     val = *ptr;
     API_AtomicUnlock(reg);
     return val;
 }
 #define avpriv_atomic_int_set atomic_int_set_gcc
 static inline void atomic_int_set_gcc(volatile int *ptr, int val)
 {
     INTREG reg;
     API_AtomicLock(&reg);
     *ptr = val;
     API_AtomicUnlock(reg);
 }
 #define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
 static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
 {
     INTREG  reg;
     int val; 
     API_AtomicLock(&reg);
     val = *ptr = *ptr + inc;
     API_AtomicUnlock(reg);
     return val;
 }
 #define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
 static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
                                        void *oldval, void *newval)
 {
     INTREG  reg;
     void *val; 
     API_AtomicLock(&reg);
     val = *ptr;
     if (val == oldval) {
         *ptr = newval;
     }
     API_AtomicUnlock(reg);
     return val;
 }
 #else
     原有的函数定义，略。
 #endif