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 #if HAVE_MALLOC_H
  22 #include <malloc.h>
  23 #endif
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27
  28 #include "mp_msg.h"
  29 #include "help_mp.h"
  30
  31 #include "vd_internal.h"
  32
  33 #include "loader/dmo/DMO_VideoDecoder.h"
  34
  35 static const vd_info_t info = {
  36         "DMO video codecs",
  37         "dmo",
  38         "A'rpi",
  39         "based on http://avifile.sf.net",
  40         "win32 codecs"
  41 };
  42
  43 LIBVD_EXTERN(dmo)
  44
  45 struct context {
  46     void *decoder;
  47     uint8_t *buffer;
  48     int stride;
  49 };
  50
  51 // to set/get/query special features/parameters
  52 static int control(sh_video_t *sh,int cmd,void* arg,...){
  53     return CONTROL_UNKNOWN;
  54 }
  55
  56 // init driver
  57 static int init(sh_video_t *sh){
  58     unsigned int out_fmt=sh->codec->outfmt[0];
  59     struct context *ctx;
  60     void *decoder;
  61     if(!(decoder=DMO_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,out_fmt)) return 0;
  67     // mpcodecs_config_vo can change the format
  68     out_fmt=sh->codec->outfmt[sh->outfmtidx];
  69     sh->context = ctx = calloc(1, sizeof(*ctx));
  70     ctx->decoder = decoder;
  71     switch(out_fmt){
  72     case IMGFMT_YUY2:
  73     case IMGFMT_UYVY:
  74         DMO_VideoDecoder_SetDestFmt(ctx->decoder,16,out_fmt);break; // packed YUV
  75     case IMGFMT_YV12:
  76     case IMGFMT_I420:
  77     case IMGFMT_IYUV:
  78         DMO_VideoDecoder_SetDestFmt(ctx->decoder,12,out_fmt);break; // planar YUV
  79     case IMGFMT_YVU9:
  80         DMO_VideoDecoder_SetDestFmt(ctx->decoder,9,out_fmt);break;
  81     case IMGFMT_RGB24:
  82     case IMGFMT_BGR24:
  83         if (sh->disp_w & 3)
  84         {
  85             ctx->stride = ((sh->disp_w * 3) + 3) & ~3;
  86             ctx->buffer = memalign(64, ctx->stride * sh->disp_h);
  87         }
  88     default:
  89         DMO_VideoDecoder_SetDestFmt(ctx->decoder,out_fmt&255,0);    // RGB/BGR
  90     }
  91     DMO_VideoDecoder_StartInternal(ctx->decoder);
  92     mp_msg(MSGT_DECVIDEO,MSGL_V,MSGTR_DMOInitOK);
  93     return 1;
  94 }
  95
  96 // uninit driver
  97 static void uninit(sh_video_t *sh){
  98     struct context *ctx = sh->context;
  99     DMO_VideoDecoder_Destroy(ctx->decoder);
 100     free(ctx);
 101     sh->context = NULL;
 102 }
 103
 104 //mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
 105
 106 // decode a frame
 107 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
 108     struct context *ctx = sh->context;
 109     uint8_t *buffer = ctx->buffer;
 110     int type = ctx->buffer ? MP_IMGTYPE_EXPORT : MP_IMGTYPE_TEMP;
 111     mp_image_t* mpi;
 112     if(len<=0) return NULL; // skipped frame
 113
 114     if(flags&3){
 115         // framedrop:
 116         DMO_VideoDecoder_DecodeInternal(ctx->decoder, data, len, 0, 0);
 117         return NULL;
 118     }
 119
 120     mpi=mpcodecs_get_image(sh, type, MP_IMGFLAG_COMMON_PLANE,
 121         sh->disp_w, sh->disp_h);
 122     if (buffer) {
 123         mpi->planes[0] = buffer;
 124         mpi->stride[0] = ctx->stride;
 125     } else {
 126         buffer = mpi->planes[0];
 127     }
 128
 129     if(!mpi){   // temporary!
 130         mp_msg(MSGT_DECVIDEO,MSGL_WARN,MSGTR_MPCODECS_CouldntAllocateImageForCinepakCodec);
 131         return NULL;
 132     }
 133
 134     DMO_VideoDecoder_DecodeInternal(ctx->decoder, data, len, 1, buffer);
 135
 136     return mpi;
 137 }