libmpcodecs/vd_dshow.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdarg.h>
   4
   5 #include "config.h"
   6 #ifdef USE_DIRECTSHOW
   7
   8 #include "mp_msg.h"
   9 #include "help_mp.h"
  10
  11 #include "vd_internal.h"
  12
  13 #include "loader/dshow/DS_VideoDecoder.h"
  14
  15 static vd_info_t info = {
  16         "DirectShow video codecs",
  17         "dshow",
  18         "A'rpi",
  19         "based on http://avifile.sf.net",
  20         "win32 codecs"
  21 };
  22
  23 LIBVD_EXTERN(dshow)
  24
  25 // to set/get/query special features/parameters
  26 static int control(sh_video_t *sh,int cmd,void* arg,...){
  27     switch(cmd){
  28     case VDCTRL_QUERY_MAX_PP_LEVEL:
  29         return 4;
  30     case VDCTRL_SET_PP_LEVEL:
  31         if(!sh->context) return CONTROL_ERROR;
  32         DS_VideoDecoder_SetValue(sh->context,"Quality",*((int*)arg));
  33         return CONTROL_OK;
  34
  35     case VDCTRL_SET_EQUALIZER: {
  36         va_list ap;
  37         int value;
  38         va_start(ap, arg);
  39         value=va_arg(ap, int);
  40         va_end(ap);
  41         if(DS_VideoDecoder_SetValue(sh->context,arg,50+value/2)==0)
  42             return CONTROL_OK;
  43         return CONTROL_FALSE;
  44     }
  45
  46     }
  47     return CONTROL_UNKNOWN;
  48 }
  49
  50 // init driver
  51 static int init(sh_video_t *sh){
  52     unsigned int out_fmt;
  53
  54     /* Hack for VSSH codec: new dll can't decode old files
  55      * In my samples old files have no extradata, so use that info
  56      * to decide what dll should be used (here and in vd_vfw).
  57      */
  58     if (!strcmp(sh->codec->dll, "vsshdsd.dll") && (sh->bih->biSize == 40))
  59       return 0;
  60
  61     if(!(sh->context=DS_VideoDecoder_Open(sh->codec->dll,&sh->codec->guid, sh->bih, 0, 0))){
  62         mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingDLLcodec,sh->codec->dll);
  63         mp_msg(MSGT_DECVIDEO,MSGL_HINT,MSGTR_DownloadCodecPackage);
  64         return 0;
  65     }
  66     if(!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YUY2)) return 0;
  67     out_fmt=sh->codec->outfmt[sh->outfmtidx];
  68     switch(out_fmt){
  69     case IMGFMT_YUY2:
  70     case IMGFMT_UYVY:
  71         DS_VideoDecoder_SetDestFmt(sh->context,16,out_fmt);break; // packed YUV
  72     case IMGFMT_YV12:
  73     case IMGFMT_I420:
  74     case IMGFMT_IYUV:
  75         DS_VideoDecoder_SetDestFmt(sh->context,12,out_fmt);break; // planar YUV
  76     case IMGFMT_YVU9:
  77         DS_VideoDecoder_SetDestFmt(sh->context,9,out_fmt);break;
  78     default:
  79         DS_VideoDecoder_SetDestFmt(sh->context,out_fmt&255,0);    // RGB/BGR
  80     }
  81     DS_SetAttr_DivX("Quality",divx_quality);
  82     DS_VideoDecoder_StartInternal(sh->context);
  83     mp_msg(MSGT_DECVIDEO,MSGL_V,MSGTR_DShowInitOK);
  84     return 1;
  85 }
  86
  87 // uninit driver
  88 static void uninit(sh_video_t *sh){
  89     DS_VideoDecoder_Destroy(sh->context);
  90 }
  91
  92 //mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
  93
  94 // decode a frame
  95 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
  96     mp_image_t* mpi;
  97     if(len<=0) return NULL; // skipped frame
  98
  99     if(flags&3){
 100         // framedrop:
 101         DS_VideoDecoder_DecodeInternal(sh->context, data, len, 0, 0);
 102         return NULL;
 103     }
 104
 105     mpi=mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, 0 /*MP_IMGFLAG_ACCEPT_STRIDE*/,
 106         sh->disp_w, sh->disp_h);
 107
 108     if(!mpi){   // temporary!
 109         mp_msg(MSGT_DECVIDEO,MSGL_WARN,MSGTR_MPCODECS_CouldntAllocateImageForCinepakCodec);
 110         return NULL;
 111     }
 112
 113     DS_VideoDecoder_DecodeInternal(sh->context, data, len, 0, mpi->planes[0]);
 114
 115     return mpi;
 116 }
 117
 118 #endif