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lazy loader works better ;) 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4012 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nick 2002-01-06 17:08:54 +00:00
parent e68e3a36f5
commit d35b5e9752
1 changed files with 34 additions and 8 deletions
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42
vidix/vidixlib.c
View File

@ -26,6 +26,7 @@
#include "vidixlib.h" #include "vidixlib.h"
static char drv_name[FILENAME_MAX];
typedef struct vdl_stream_s typedef struct vdl_stream_s
{ {
@ -68,13 +69,15 @@ static int vdl_fill_driver(VDL_HANDLE stream)
if(!( t_vdl(stream)->get_caps && t_vdl(stream)->query_fourcc && if(!( t_vdl(stream)->get_caps && t_vdl(stream)->query_fourcc &&
t_vdl(stream)->config_playback && t_vdl(stream)->playback_on && t_vdl(stream)->config_playback && t_vdl(stream)->playback_on &&
t_vdl(stream)->playback_off)) t_vdl(stream)->playback_off))
return 0; {
printf("vidixlib: some features are missed in driver\n");
return 0;
}
return 1; return 1;
} }
static int vdl_probe_driver(VDL_HANDLE stream,const char *path,const char *name,unsigned cap,int verbose) static int vdl_probe_driver(VDL_HANDLE stream,const char *path,const char *name,unsigned cap,int verbose)
{ {
char drv_name[FILENAME_MAX];
vidix_capability_t vid_cap; vidix_capability_t vid_cap;
unsigned (*_ver)(void); unsigned (*_ver)(void);
int (*_probe)(int); int (*_probe)(int);
@ -82,7 +85,11 @@ static int vdl_probe_driver(VDL_HANDLE stream,const char *path,const char *name,
strcpy(drv_name,path); strcpy(drv_name,path);
strcat(drv_name,name); strcat(drv_name,name);
if(verbose) printf("vidixlib: PROBING: %s\n",drv_name); if(verbose) printf("vidixlib: PROBING: %s\n",drv_name);
if(!(t_vdl(stream)->handle = dlopen(drv_name,RTLD_NOW|RTLD_GLOBAL))) return 0; if(!(t_vdl(stream)->handle = dlopen(drv_name,RTLD_LAZY|RTLD_GLOBAL)))
{
if(verbose) printf("vidixlib: %s not driver: %s\n",drv_name,strerror(errno));
return 0;
}
_ver = dlsym(t_vdl(stream)->handle,"vixGetVersion"); _ver = dlsym(t_vdl(stream)->handle,"vixGetVersion");
_probe = dlsym(t_vdl(stream)->handle,"vixProbe"); _probe = dlsym(t_vdl(stream)->handle,"vixProbe");
_cap = dlsym(t_vdl(stream)->handle,"vixGetCapability"); _cap = dlsym(t_vdl(stream)->handle,"vixGetCapability");
@ -107,7 +114,11 @@ static int vdl_probe_driver(VDL_HANDLE stream,const char *path,const char *name,
else goto fatal_err; else goto fatal_err;
if(_cap) { if((*_cap)(&vid_cap) != 0) goto err; } if(_cap) { if((*_cap)(&vid_cap) != 0) goto err; }
else goto fatal_err; else goto fatal_err;
if((vid_cap.type & cap) != cap) goto err; if((vid_cap.type & cap) != cap)
{
if(verbose) printf("vidixlib: Found %s but has no required capability\n",drv_name);
goto err;
}
if(verbose) printf("vidixlib: %s probed o'k\n",drv_name); if(verbose) printf("vidixlib: %s probed o'k\n",drv_name);
return 1; return 1;
} }
@ -135,7 +146,7 @@ static int vdl_find_driver(VDL_HANDLE stream,const char *path,unsigned cap,int v
VDL_HANDLE vdlOpen(const char *path,const char *name,unsigned cap,int verbose) VDL_HANDLE vdlOpen(const char *path,const char *name,unsigned cap,int verbose)
{ {
vdl_stream_t *stream; vdl_stream_t *stream;
char drv_name[FILENAME_MAX]; int errcode;
if(!(stream = malloc(sizeof(vdl_stream_t)))) return NULL; if(!(stream = malloc(sizeof(vdl_stream_t)))) return NULL;
memset(stream,0,sizeof(vdl_stream_t)); memset(stream,0,sizeof(vdl_stream_t));
if(name) if(name)
@ -164,11 +175,26 @@ VDL_HANDLE vdlOpen(const char *path,const char *name,unsigned cap,int verbose)
else goto drv_err; else goto drv_err;
fill: fill:
if(!vdl_fill_driver(stream)) goto drv_err; if(!vdl_fill_driver(stream)) goto drv_err;
goto ok;
} }
else else
if(vdl_find_driver(stream,path,cap,verbose)) goto fill; if(vdl_find_driver(stream,path,cap,verbose))
else goto err; {
if(t_vdl(stream)->init) if(t_vdl(stream)->init()) goto drv_err; if(verbose) printf("vidixlib: will use %s driver\n",drv_name);
goto fill;
}
else goto err;
ok:
if(t_vdl(stream)->init)
{
if(verbose) printf("vidixlib: Attempt to initialize driver at: %p\n",t_vdl(stream)->init);
if((errcode=t_vdl(stream)->init())!=0)
{
if(verbose) printf("vidixlib: Can't init driver: %s\n",strerror(errcode));
goto drv_err;
}
}
if(verbose) printf("vidixlib: '%s'successfully loaded\n",drv_name);
return stream; return stream;
} }