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author | nick <nick@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-01-05 10:13:25 +0000 |
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committer | nick <nick@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-01-05 10:13:25 +0000 |
commit | 76c7e8371b711de7d00736588ff766eb763e829c (patch) | |
tree | 6c27fe9570cad774c1b91c08c6b566595074cc03 /vidix/vidixlib.c | |
parent | 71d96baf240f404bb0dd102a7bcab46f7d0bc811 (diff) | |
download | mpv-76c7e8371b711de7d00736588ff766eb763e829c.tar.bz2 mpv-76c7e8371b711de7d00736588ff766eb763e829c.tar.xz |
preliminary version
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3992 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'vidix/vidixlib.c')
-rw-r--r-- | vidix/vidixlib.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/vidix/vidixlib.c b/vidix/vidixlib.c new file mode 100644 index 0000000000..1dc4a53e26 --- /dev/null +++ b/vidix/vidixlib.c @@ -0,0 +1,207 @@ +/* + * vidixlib.c + * VIDIXLib - Library for VIDeo Interface for *niX + * This interface is introduced as universal one to MPEG decoder, + * BES == Back End Scaler and YUV2RGB hw accelerators. + * In the future it may be expanded up to capturing and audio things. + * Main goal of this this interface imlpementation is providing DGA + * everywhere where it's possible (unlike X11 and other). + * Copyright 2002 Nick Kurshev + * Licence: GPL + * This interface is based on v4l2, fbvid.h, mga_vid.h projects + * and personally my ideas. + * NOTE: This interface is introduces as APP interface. + * Don't use it for driver. + * It provides multistreaming. This mean that APP can handle + * several streams simultaneously. (Example: Video capturing and video + * playback or capturing, video playback, audio encoding and so on). +*/ +#include <stdlib.h> +#include <stdio.h> +#include <errno.h> +#include <string.h> + +#include <dlfcn.h> /* GLIBC specific. Exists under cygwin too! */ +#include <dirent.h> + +#include "vidixlib.h" + + +typedef struct vdl_stream_s +{ + void * handle; + int (*get_caps)(vidix_capability_t *); + int (*query_fourcc)(vidix_fourcc_t *); + int (*config_playback)(const vidix_playback_t *); + int (*map_playback)(vidix_dga_t *); + int (*playback_on)( void ); + int (*playback_off)( void ); + /* Functions below can be missed in driver ;) */ + int (*init)(void); + void (*destroy)(void); + int (*frame_sel)( unsigned frame_idx ); + int (*get_eq)( vidix_video_eq_t * ); + int (*set_eq)( const vidix_video_eq_t * ); + int (*copy_frame)( const vidix_dma_t * ); +}vdl_stream_t; + +#define t_vdl(p) (((vdl_stream_t *)p)) + +extern unsigned vdlGetVersion( void ) +{ + return VIDIX_VERSION; +} + +static int vdl_fill_driver(VDL_HANDLE stream) +{ + t_vdl(stream)->init = dlsym(t_vdl(stream)->handle,"vixInit"); + t_vdl(stream)->destroy = dlsym(t_vdl(stream)->handle,"vixDestroy"); + t_vdl(stream)->get_caps = dlsym(t_vdl(stream)->handle,"vixGetCapability"); + t_vdl(stream)->query_fourcc = dlsym(t_vdl(stream)->handle,"vixQueryFourcc"); + t_vdl(stream)->config_playback= dlsym(t_vdl(stream)->handle,"vixConfigPlayback"); + t_vdl(stream)->map_playback = dlsym(t_vdl(stream)->handle,"vixMapPlayback"); + t_vdl(stream)->playback_on = dlsym(t_vdl(stream)->handle,"vixPlaybackOn"); + t_vdl(stream)->playback_off = dlsym(t_vdl(stream)->handle,"vixPlaybackOff"); + t_vdl(stream)->frame_sel = dlsym(t_vdl(stream)->handle,"vixPlaybackFrameSelect"); + t_vdl(stream)->get_eq = dlsym(t_vdl(stream)->handle,"vixPlaybackGetEq"); + t_vdl(stream)->set_eq = dlsym(t_vdl(stream)->handle,"vixPlaybackSetEq"); + t_vdl(stream)->copy_frame = dlsym(t_vdl(stream)->handle,"vixPlaybackCopyFrame"); + /* check driver viability */ + if(!( t_vdl(stream)->get_caps && t_vdl(stream)->query_fourcc && t_vdl(stream)->config_playback && + t_vdl(stream)->map_playback && t_vdl(stream)->playback_on && t_vdl(stream)->playback_off)) + return 0; + return 1; +} + +static int vdl_probe_driver(VDL_HANDLE stream,const char *path,const char *name,unsigned cap) +{ + char drv_name[FILENAME_MAX]; + vidix_capability_t vid_cap; + unsigned (*_ver)(void); + int (*_probe)(void); + int (*_cap)(vidix_capability_t*); + strcpy(drv_name,path); + strcat(drv_name,name); + if(!(t_vdl(stream)->handle = dlopen(drv_name,RTLD_NOW|RTLD_GLOBAL))) return 0; + _ver = dlsym(t_vdl(stream)->handle,"vixGetVersion"); + _probe = dlsym(t_vdl(stream)->handle,"vixProbe"); + _cap = dlsym(t_vdl(stream)->handle,"vixGetCapability"); + if(_ver) { if((*_ver)() != VIDIX_VERSION) { err: dlclose(t_vdl(stream)->handle); t_vdl(stream)->handle = 0; return 0; } } + else goto err; + if(_probe) { if((*_probe)() != 0) goto err; } + else goto err; + if(_cap) { if((*_cap)(&vid_cap) != 0) goto err; } + else goto err; + if((vid_cap.type & cap) != cap) goto err; + return 1; +} + +static int vdl_find_driver(VDL_HANDLE stream,const char *path,unsigned cap) +{ + DIR *dstream; + struct dirent *name; + int done = 0; + if(!(dstream = opendir(path))) return 0; + while(!done) + { + name = readdir(dstream); + if(name) { if(vdl_probe_driver(stream,path,name->d_name,cap)) break; } + else done = 1; + } + closedir(dstream); + return done?0:1; +} + +VDL_HANDLE vdlOpen(const char *path,const char *name,unsigned cap) +{ + vdl_stream_t *stream; + char drv_name[FILENAME_MAX]; + if(!(stream = malloc(sizeof(vdl_stream_t)))) return NULL; + memset(stream,0,sizeof(vdl_stream_t)); + if(name) + { + unsigned (*ver)(void); + unsigned version = 0; + strcpy(drv_name,path); + strcat(drv_name,name); + if(!(t_vdl(stream)->handle = dlopen(drv_name,RTLD_NOW|RTLD_GLOBAL))) + { + err: + free(stream); + return NULL; + } + ver = dlsym(t_vdl(stream)->handle,"vixGetVersion"); + if(ver) version = (*ver)(); + if(version != VIDIX_VERSION) + { + drv_err: + if(t_vdl(stream)->handle) dlclose(t_vdl(stream)->handle); + goto err; + } + fill: + if(!vdl_fill_driver(stream)) goto drv_err; + } + else + if(vdl_find_driver(stream,path,cap)) goto fill; + else goto err; + if(t_vdl(stream)->init) t_vdl(stream)->init(); + return stream; +} + +void vdlClose(VDL_HANDLE stream) +{ + if(t_vdl(stream)->destroy) t_vdl(stream)->destroy(); + dlclose(t_vdl(stream)->handle); + memset(stream,0,sizeof(vdl_stream_t)); /* <- it's not stupid */ + free(stream); +} + +int vdlGetCapability(VDL_HANDLE handle, vidix_capability_t *cap) +{ + return t_vdl(handle)->get_caps(cap); +} + +int vdlQueryFourcc(VDL_HANDLE handle,vidix_fourcc_t *f) +{ + return t_vdl(handle)->query_fourcc(f); +} + +int vdlConfigPlayback(VDL_HANDLE handle,const vidix_playback_t *p) +{ + return t_vdl(handle)->config_playback(p); +} + +int vdlMapPlayback(VDL_HANDLE handle,vidix_dga_t *m) +{ + return t_vdl(handle)->map_playback(m); +} + +int vdlPlaybackOn(VDL_HANDLE handle) +{ + return t_vdl(handle)->playback_on(); +} + +int vdlPlaybackOff(VDL_HANDLE handle) +{ + return t_vdl(handle)->playback_off(); +} + +int vdlPlaybackFrameSelect(VDL_HANDLE handle, unsigned frame_idx ) +{ + return t_vdl(handle)->frame_sel ? t_vdl(handle)->frame_sel(frame_idx) : ENOSYS; +} + +int vdlPlaybackGetEq(VDL_HANDLE handle, vidix_video_eq_t * e) +{ + return t_vdl(handle)->get_eq ? t_vdl(handle)->get_eq(e) : ENOSYS; +} + +int vdlPlaybackSetEq(VDL_HANDLE handle, const vidix_video_eq_t * e) +{ + return t_vdl(handle)->set_eq ? t_vdl(handle)->set_eq(e) : ENOSYS; +} + +int vdlPlaybackCopyFrame(VDL_HANDLE handle, const vidix_dma_t * f) +{ + return t_vdl(handle)->copy_frame ? t_vdl(handle)->copy_frame(f) : ENOSYS; +} |