mirror of https://github.com/mpv-player/mpv
345 lines
10 KiB
C
345 lines
10 KiB
C
/*
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* vidixlib.c
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* VIDIXLib - Library for VIDeo Interface for *niX
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* This interface is introduced as universal one to MPEG decoder,
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* BES == Back End Scaler and YUV2RGB hw accelerators.
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* In the future it may be expanded up to capturing and audio things.
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* Main goal of this this interface imlpementation is providing DGA
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* everywhere where it's possible (unlike X11 and other).
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* Copyright 2002 Nick Kurshev
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* Licence: GPL
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* This interface is based on v4l2, fbvid.h, mga_vid.h projects
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* and personally my ideas.
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* NOTE: This interface is introduces as APP interface.
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* Don't use it for driver.
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* It provides multistreaming. This mean that APP can handle
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* several streams simultaneously. (Example: Video capturing and video
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* playback or capturing, video playback, audio encoding and so on).
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#ifndef WIN32
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#include <dlfcn.h> /* GLIBC specific. Exists under cygwin too! */
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#else
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#include <windows.h>
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#define dlsym(h,s) GetProcAddress(h,s)
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#define dlopen(h,s) LoadLibrary(h)
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#define dlclose(h) FreeLibrary(h)
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static char* dlerror(){
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char errormsg[10];
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sprintf(errormsg,"%i\n",GetLastError());
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return errormsg;
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}
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#endif
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#include <dirent.h>
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#if defined(__OpenBSD__) && !defined(__ELF__)
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#define dlsym(h,s) dlsym(h, "_" s)
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#endif
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#include "vidixlib.h"
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#include "../bswap.h"
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#include "../config.h"
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static char drv_name[FILENAME_MAX];
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typedef struct vdl_stream_s
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{
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void * handle;
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int (*get_caps)(vidix_capability_t *);
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int (*query_fourcc)(vidix_fourcc_t *);
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int (*config_playback)(vidix_playback_t *);
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int (*playback_on)( void );
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int (*playback_off)( void );
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/* Functions below can be missed in driver ;) */
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int (*init)(void);
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void (*destroy)(void);
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int (*frame_sel)( unsigned frame_idx );
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int (*get_eq)( vidix_video_eq_t * );
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int (*set_eq)( const vidix_video_eq_t * );
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int (*get_deint)( vidix_deinterlace_t * );
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int (*set_deint)( const vidix_deinterlace_t * );
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int (*copy_frame)( const vidix_dma_t * );
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int (*get_gkey)( vidix_grkey_t * );
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int (*set_gkey)( const vidix_grkey_t * );
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int (*get_num_fx)( unsigned * );
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int (*get_fx)( vidix_oem_fx_t * );
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int (*set_fx)( const vidix_oem_fx_t * );
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}vdl_stream_t;
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#define t_vdl(p) (((vdl_stream_t *)p))
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extern unsigned vdlGetVersion( void )
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{
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return VIDIX_VERSION;
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}
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static int vdl_fill_driver(VDL_HANDLE stream)
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{
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t_vdl(stream)->init = dlsym(t_vdl(stream)->handle,"vixInit");
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t_vdl(stream)->destroy = dlsym(t_vdl(stream)->handle,"vixDestroy");
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t_vdl(stream)->get_caps = dlsym(t_vdl(stream)->handle,"vixGetCapability");
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t_vdl(stream)->query_fourcc = dlsym(t_vdl(stream)->handle,"vixQueryFourcc");
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t_vdl(stream)->config_playback= dlsym(t_vdl(stream)->handle,"vixConfigPlayback");
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t_vdl(stream)->playback_on = dlsym(t_vdl(stream)->handle,"vixPlaybackOn");
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t_vdl(stream)->playback_off = dlsym(t_vdl(stream)->handle,"vixPlaybackOff");
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t_vdl(stream)->frame_sel = dlsym(t_vdl(stream)->handle,"vixPlaybackFrameSelect");
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t_vdl(stream)->get_eq = dlsym(t_vdl(stream)->handle,"vixPlaybackGetEq");
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t_vdl(stream)->set_eq = dlsym(t_vdl(stream)->handle,"vixPlaybackSetEq");
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t_vdl(stream)->get_gkey = dlsym(t_vdl(stream)->handle,"vixGetGrKeys");
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t_vdl(stream)->set_gkey = dlsym(t_vdl(stream)->handle,"vixSetGrKeys");
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t_vdl(stream)->get_deint = dlsym(t_vdl(stream)->handle,"vixPlaybackGetDeint");
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t_vdl(stream)->set_deint = dlsym(t_vdl(stream)->handle,"vixPlaybackSetDeint");
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t_vdl(stream)->copy_frame = dlsym(t_vdl(stream)->handle,"vixPlaybackCopyFrame");
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t_vdl(stream)->get_num_fx = dlsym(t_vdl(stream)->handle,"vixQueryNumOemEffects");
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t_vdl(stream)->get_fx = dlsym(t_vdl(stream)->handle,"vixGetOemEffect");
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t_vdl(stream)->set_fx = dlsym(t_vdl(stream)->handle,"vixSetOemEffect");
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/* check driver viability */
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if(!( t_vdl(stream)->get_caps && t_vdl(stream)->query_fourcc &&
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t_vdl(stream)->config_playback && t_vdl(stream)->playback_on &&
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t_vdl(stream)->playback_off))
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{
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printf("vidixlib: Incomplete driver: some of essential features are missed in it.\n");
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return 0;
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}
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return 1;
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}
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL RTLD_LAZY
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#endif
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#ifndef RTLD_NOW
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#define RTLD_NOW RTLD_LAZY
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#endif
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static int vdl_probe_driver(VDL_HANDLE stream,const char *path,const char *name,unsigned cap,int verbose)
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{
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vidix_capability_t vid_cap;
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unsigned (*_ver)(void);
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int (*_probe)(int,int);
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int (*_cap)(vidix_capability_t*);
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strlcpy(drv_name,path, sizeof( drv_name ));
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strlcat(drv_name,name, sizeof( drv_name ));
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if(verbose) printf("vidixlib: PROBING: %s\n",drv_name);
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if(!(t_vdl(stream)->handle = dlopen(drv_name,RTLD_LAZY|RTLD_GLOBAL)))
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{
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if(verbose) printf("vidixlib: %s not driver: %s\n",drv_name,dlerror());
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return 0;
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}
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_ver = dlsym(t_vdl(stream)->handle,"vixGetVersion");
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_probe = dlsym(t_vdl(stream)->handle,"vixProbe");
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_cap = dlsym(t_vdl(stream)->handle,"vixGetCapability");
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if(_ver)
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{
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if((*_ver)() != VIDIX_VERSION)
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{
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if(verbose) printf("vidixlib: %s has wrong version\n",drv_name);
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err:
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dlclose(t_vdl(stream)->handle);
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t_vdl(stream)->handle = 0;
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return 0;
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}
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}
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else
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{
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fatal_err:
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if(verbose) printf("vidixlib: %s has no function definition\n",drv_name);
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goto err;
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}
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if(_probe) { if((*_probe)(verbose,PROBE_NORMAL) != 0) goto err; }
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else goto fatal_err;
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if(_cap) { if((*_cap)(&vid_cap) != 0) goto err; }
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else goto fatal_err;
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if((vid_cap.type & cap) != cap)
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{
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if(verbose) printf("vidixlib: Found %s but has no required capability\n",drv_name);
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goto err;
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}
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if(verbose) printf("vidixlib: %s probed o'k\n",drv_name);
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return 1;
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}
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static int vdl_find_driver(VDL_HANDLE stream,const char *path,unsigned cap,int verbose)
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{
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DIR *dstream;
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struct dirent *name;
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int done = 0;
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if(!(dstream = opendir(path))) return 0;
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while(!done)
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{
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name = readdir(dstream);
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if(name)
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{
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if(name->d_name[0] != '.')
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if(vdl_probe_driver(stream,path,name->d_name,cap,verbose)) break;
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}
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else done = 1;
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}
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closedir(dstream);
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return done?0:1;
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}
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VDL_HANDLE vdlOpen(const char *path,const char *name,unsigned cap,int verbose)
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{
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vdl_stream_t *stream;
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int errcode;
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if(!(stream = malloc(sizeof(vdl_stream_t)))) return NULL;
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memset(stream,0,sizeof(vdl_stream_t));
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if(name)
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{
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unsigned (*ver)(void);
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int (*probe)(int,int);
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unsigned version = 0;
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strlcpy(drv_name,path, sizeof( drv_name ));
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strlcat(drv_name,name, sizeof( drv_name ));
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if(!(t_vdl(stream)->handle = dlopen(drv_name,RTLD_NOW|RTLD_GLOBAL)))
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{
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if (verbose)
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printf("vidixlib: dlopen error: %s\n", dlerror());
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err:
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free(stream);
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return NULL;
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}
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ver = dlsym(t_vdl(stream)->handle,"vixGetVersion");
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if(ver) version = (*ver)();
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if(version != VIDIX_VERSION)
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{
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drv_err:
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if(t_vdl(stream)->handle) dlclose(t_vdl(stream)->handle);
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goto err;
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}
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probe = dlsym(t_vdl(stream)->handle,"vixProbe");
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if(probe) { if((*probe)(verbose,PROBE_FORCE)!=0) goto drv_err; }
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else goto drv_err;
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fill:
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if(!vdl_fill_driver(stream)) goto drv_err;
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goto ok;
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}
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else
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if(vdl_find_driver(stream,path,cap,verbose))
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{
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if(verbose) printf("vidixlib: will use %s driver\n",drv_name);
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goto fill;
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}
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else goto err;
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ok:
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if(t_vdl(stream)->init)
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{
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if(verbose) printf("vidixlib: Attempt to initialize driver at: %p\n",t_vdl(stream)->init);
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if((errcode=t_vdl(stream)->init())!=0)
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{
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if(verbose) printf("vidixlib: Can't init driver: %s\n",strerror(errcode));
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goto drv_err;
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}
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}
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if(verbose) printf("vidixlib: '%s'successfully loaded\n",drv_name);
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return stream;
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}
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void vdlClose(VDL_HANDLE stream)
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{
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if(t_vdl(stream)->destroy) t_vdl(stream)->destroy();
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dlclose(t_vdl(stream)->handle);
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memset(stream,0,sizeof(vdl_stream_t)); /* <- it's not stupid */
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free(stream);
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}
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int vdlGetCapability(VDL_HANDLE handle, vidix_capability_t *cap)
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{
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return t_vdl(handle)->get_caps(cap);
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}
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#define MPLAYER_IMGFMT_RGB (('R'<<24)|('G'<<16)|('B'<<8))
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#define MPLAYER_IMGFMT_BGR (('B'<<24)|('G'<<16)|('R'<<8))
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#define MPLAYER_IMGFMT_RGB_MASK 0xFFFFFF00
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static uint32_t normalize_fourcc(uint32_t fourcc)
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{
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if((fourcc & MPLAYER_IMGFMT_RGB_MASK) == (MPLAYER_IMGFMT_RGB|0) ||
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(fourcc & MPLAYER_IMGFMT_RGB_MASK) == (MPLAYER_IMGFMT_BGR|0))
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return bswap_32(fourcc);
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else return fourcc;
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}
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int vdlQueryFourcc(VDL_HANDLE handle,vidix_fourcc_t *f)
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{
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f->fourcc = normalize_fourcc(f->fourcc);
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return t_vdl(handle)->query_fourcc(f);
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}
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int vdlConfigPlayback(VDL_HANDLE handle,vidix_playback_t *p)
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{
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p->fourcc = normalize_fourcc(p->fourcc);
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return t_vdl(handle)->config_playback(p);
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}
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int vdlPlaybackOn(VDL_HANDLE handle)
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{
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return t_vdl(handle)->playback_on();
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}
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int vdlPlaybackOff(VDL_HANDLE handle)
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{
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return t_vdl(handle)->playback_off();
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}
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int vdlPlaybackFrameSelect(VDL_HANDLE handle, unsigned frame_idx )
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{
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return t_vdl(handle)->frame_sel ? t_vdl(handle)->frame_sel(frame_idx) : ENOSYS;
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}
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int vdlPlaybackGetEq(VDL_HANDLE handle, vidix_video_eq_t * e)
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{
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return t_vdl(handle)->get_eq ? t_vdl(handle)->get_eq(e) : ENOSYS;
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}
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int vdlPlaybackSetEq(VDL_HANDLE handle, const vidix_video_eq_t * e)
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{
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return t_vdl(handle)->set_eq ? t_vdl(handle)->set_eq(e) : ENOSYS;
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}
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int vdlPlaybackCopyFrame(VDL_HANDLE handle, const vidix_dma_t * f)
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{
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return t_vdl(handle)->copy_frame ? t_vdl(handle)->copy_frame(f) : ENOSYS;
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}
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int vdlGetGrKeys(VDL_HANDLE handle, vidix_grkey_t * k)
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{
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return t_vdl(handle)->get_gkey ? t_vdl(handle)->get_gkey(k) : ENOSYS;
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}
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int vdlSetGrKeys(VDL_HANDLE handle, const vidix_grkey_t * k)
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{
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return t_vdl(handle)->set_gkey ? t_vdl(handle)->set_gkey(k) : ENOSYS;
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}
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int vdlPlaybackGetDeint(VDL_HANDLE handle, vidix_deinterlace_t * d)
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{
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return t_vdl(handle)->get_deint ? t_vdl(handle)->get_deint(d) : ENOSYS;
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}
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int vdlPlaybackSetDeint(VDL_HANDLE handle, const vidix_deinterlace_t * d)
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{
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return t_vdl(handle)->set_deint ? t_vdl(handle)->set_deint(d) : ENOSYS;
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}
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int vdlQueryNumOemEffects(VDL_HANDLE handle, unsigned * number )
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{
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return t_vdl(handle)->get_num_fx ? t_vdl(handle)->get_num_fx(number) : ENOSYS;
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}
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int vdlGetOemEffect(VDL_HANDLE handle, vidix_oem_fx_t * f)
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{
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return t_vdl(handle)->get_fx ? t_vdl(handle)->get_fx(f) : ENOSYS;
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}
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int vdlSetOemEffect(VDL_HANDLE handle, const vidix_oem_fx_t * f)
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{
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return t_vdl(handle)->set_fx ? t_vdl(handle)->set_fx(f) : ENOSYS;
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}
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