libmpcodecs/vd_dshow.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <stdarg.h>
  22
  23 #include "config.h"
  24
  25 #include "mp_msg.h"
  26 #include "help_mp.h"
  27
  28 #include "vd_internal.h"
  29
  30 #include "loader/dshow/DS_VideoDecoder.h"
  31
  32 static const vd_info_t info = {
  33         "DirectShow video codecs",
  34         "dshow",
  35         "A'rpi",
  36         "based on http://avifile.sf.net",
  37         "win32 codecs"
  38 };
  39
  40 LIBVD_EXTERN(dshow)
  41
  42 // to set/get/query special features/parameters
  43 static int control(sh_video_t *sh,int cmd,void* arg,...){
  44     switch(cmd){
  45     case VDCTRL_QUERY_MAX_PP_LEVEL:
  46         return 4;
  47     case VDCTRL_SET_PP_LEVEL:
  48         if(!sh->context) return CONTROL_ERROR;
  49         DS_VideoDecoder_SetValue(sh->context,"Quality",*((int*)arg));
  50         return CONTROL_OK;
  51
  52     case VDCTRL_SET_EQUALIZER: {
  53         va_list ap;
  54         int value;
  55         va_start(ap, arg);
  56         value=va_arg(ap, int);
  57         va_end(ap);
  58         if(DS_VideoDecoder_SetValue(sh->context,arg,50+value/2)==0)
  59             return CONTROL_OK;
  60         return CONTROL_FALSE;
  61     }
  62
  63     }
  64     return CONTROL_UNKNOWN;
  65 }
  66
  67 // init driver
  68 static int init(sh_video_t *sh){
  69     unsigned int out_fmt=sh->codec->outfmt[0];
  70
  71     /* Hack for VSSH codec: new dll can't decode old files
  72      * In my samples old files have no extradata, so use that info
  73      * to decide what dll should be used (here and in vd_vfw).
  74      */
  75     if (!strcmp(sh->codec->dll, "vsshdsd.dll") && (sh->bih->biSize == 40))
  76       return 0;
  77
  78     if(!(sh->context=DS_VideoDecoder_Open(sh->codec->dll,&sh->codec->guid, sh->bih, 0, 0))){
  79         mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingDLLcodec,sh->codec->dll);
  80         mp_msg(MSGT_DECVIDEO,MSGL_HINT,MSGTR_DownloadCodecPackage);
  81         return 0;
  82     }
  83     if(!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,out_fmt)) return 0;
  84     // mpcodecs_config_vo can change the format
  85     out_fmt=sh->codec->outfmt[sh->outfmtidx];
  86     switch(out_fmt){
  87     case IMGFMT_YUY2:
  88     case IMGFMT_UYVY:
  89         DS_VideoDecoder_SetDestFmt(sh->context,16,out_fmt);break; // packed YUV
  90     case IMGFMT_YV12:
  91     case IMGFMT_I420:
  92     case IMGFMT_IYUV:
  93         DS_VideoDecoder_SetDestFmt(sh->context,12,out_fmt);break; // planar YUV
  94     case IMGFMT_YVU9:
  95         DS_VideoDecoder_SetDestFmt(sh->context,9,out_fmt);break;
  96     default:
  97         DS_VideoDecoder_SetDestFmt(sh->context,out_fmt&255,0);    // RGB/BGR
  98     }
  99     DS_SetAttr_DivX("Quality",divx_quality);
 100     DS_VideoDecoder_StartInternal(sh->context);
 101     mp_msg(MSGT_DECVIDEO,MSGL_V,MSGTR_DShowInitOK);
 102     return 1;
 103 }
 104
 105 // uninit driver
 106 static void uninit(sh_video_t *sh){
 107     DS_VideoDecoder_Destroy(sh->context);
 108 }
 109
 110 //mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
 111
 112 // decode a frame
 113 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
 114     mp_image_t* mpi;
 115     if(len<=0) return NULL; // skipped frame
 116
 117     if(flags&3){
 118         // framedrop:
 119         DS_VideoDecoder_DecodeInternal(sh->context, data, len, 0, 0);
 120         return NULL;
 121     }
 122
 123     mpi=mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_COMMON_PLANE,
 124         sh->disp_w, sh->disp_h);
 125
 126     if(!mpi){   // temporary!
 127         mp_msg(MSGT_DECVIDEO,MSGL_WARN,MSGTR_MPCODECS_CouldntAllocateImageForCinepakCodec);
 128         return NULL;
 129     }
 130
 131     DS_VideoDecoder_DecodeInternal(sh->context, data, len, 0, mpi->planes[0]);
 132
 133     return mpi;
 134 }