libmpcodecs/vd_dmo.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 "config.h"
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <stdarg.h>
  24
  25 #include "mp_msg.h"
  26
  27 #include "vd_internal.h"
  28
  29 #include "loader/dmo/DMO_VideoDecoder.h"
  30
  31 static const vd_info_t info = {
  32         "DMO video codecs",
  33         "dmo",
  34         "A'rpi",
  35         "based on http://avifile.sf.net",
  36         "win32 codecs"
  37 };
  38
  39 LIBVD_EXTERN(dmo)
  40
  41 struct context {
  42     void *decoder;
  43     uint8_t *buffer;
  44     int stride;
  45 };
  46
  47 // to set/get/query special features/parameters
  48 static int control(sh_video_t *sh,int cmd,void* arg,...){
  49     return CONTROL_UNKNOWN;
  50 }
  51
  52 // init driver
  53 static int init(sh_video_t *sh){
  54     unsigned int out_fmt=sh->codec->outfmt[0];
  55     struct context *ctx;
  56     void *decoder;
  57     if(!(decoder=DMO_VideoDecoder_Open(sh->codec->dll,&sh->codec->guid, sh->bih, 0, 0))){
  58         mp_tmsg(MSGT_DECVIDEO,MSGL_ERR,"ERROR: Could not open required DirectShow codec %s.\n",sh->codec->dll);
  59         mp_tmsg(MSGT_DECVIDEO,MSGL_HINT,"You need to upgrade/install the binary codecs package.\nGo to http://www.mplayerhq.hu/dload.html\n");
  60         return 0;
  61     }
  62     if(!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,out_fmt)) return 0;
  63     // mpcodecs_config_vo can change the format
  64     out_fmt=sh->codec->outfmt[sh->outfmtidx];
  65     sh->context = ctx = calloc(1, sizeof(*ctx));
  66     ctx->decoder = decoder;
  67     switch(out_fmt){
  68     case IMGFMT_YUY2:
  69     case IMGFMT_UYVY:
  70         DMO_VideoDecoder_SetDestFmt(ctx->decoder,16,out_fmt);break; // packed YUV
  71     case IMGFMT_YV12:
  72     case IMGFMT_I420:
  73     case IMGFMT_IYUV:
  74         DMO_VideoDecoder_SetDestFmt(ctx->decoder,12,out_fmt);break; // planar YUV
  75     case IMGFMT_YVU9:
  76         DMO_VideoDecoder_SetDestFmt(ctx->decoder,9,out_fmt);break;
  77     case IMGFMT_RGB24:
  78     case IMGFMT_BGR24:
  79         if (sh->disp_w & 3)
  80         {
  81             ctx->stride = ((sh->disp_w * 3) + 3) & ~3;
  82             ctx->buffer = av_malloc(ctx->stride * sh->disp_h);
  83         }
  84     default:
  85         DMO_VideoDecoder_SetDestFmt(ctx->decoder,out_fmt&255,0);    // RGB/BGR
  86     }
  87     DMO_VideoDecoder_StartInternal(ctx->decoder);
  88     mp_tmsg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DMO video codec init OK.\n");
  89     return 1;
  90 }
  91
  92 // uninit driver
  93 static void uninit(sh_video_t *sh){
  94     struct context *ctx = sh->context;
  95     DMO_VideoDecoder_Destroy(ctx->decoder);
  96     av_free(ctx->buffer);
  97     free(ctx);
  98     sh->context = NULL;
  99 }
 100
 101 //mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
 102
 103 // decode a frame
 104 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
 105     struct context *ctx = sh->context;
 106     uint8_t *buffer = ctx->buffer;
 107     int type = ctx->buffer ? MP_IMGTYPE_EXPORT : MP_IMGTYPE_TEMP;
 108     mp_image_t* mpi;
 109     if(len<=0) return NULL; // skipped frame
 110
 111     if(flags&3){
 112         // framedrop:
 113         DMO_VideoDecoder_DecodeInternal(ctx->decoder, data, len, 0, 0);
 114         return NULL;
 115     }
 116
 117     mpi=mpcodecs_get_image(sh, type, MP_IMGFLAG_COMMON_PLANE,
 118         sh->disp_w, sh->disp_h);
 119     if (buffer) {
 120         mpi->planes[0] = buffer;
 121         mpi->stride[0] = ctx->stride;
 122     } else {
 123         buffer = mpi->planes[0];
 124     }
 125
 126     if(!mpi){   // temporary!
 127         mp_tmsg(MSGT_DECVIDEO,MSGL_WARN,"[VD_DMO] Couldn't allocate image for cinepak codec.\n");
 128         return NULL;
 129     }
 130
 131     DMO_VideoDecoder_DecodeInternal(ctx->decoder, data, len, 1, buffer);
 132
 133     return mpi;
 134 }