libmpcodecs/vf_palette.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 <string.h>
  22 #include <inttypes.h>
  23
  24 #include "config.h"
  25 #include "mp_msg.h"
  26
  27 #include "img_format.h"
  28 #include "mp_image.h"
  29 #include "vf.h"
  30
  31 #include "libswscale/rgb2rgb.h"
  32
  33 //===========================================================================//
  34
  35 // commented out 16 and 15 bit output support, because the conversion
  36 // routines are incorrrect.  they assume the palette to be of the same
  37 // depth as the output, which is incorrect. --Joey
  38
  39 static const unsigned int bgr_list[]={
  40     IMGFMT_BGR32,
  41     IMGFMT_BGR24,
  42 //    IMGFMT_BGR16,
  43 //    IMGFMT_BGR15,
  44     0
  45 };
  46 static const unsigned int rgb_list[]={
  47     IMGFMT_RGB32,
  48     IMGFMT_RGB24,
  49 //    IMGFMT_RGB16,
  50 //    IMGFMT_RGB15,
  51     0
  52 };
  53
  54 static unsigned int gray_pal[256];
  55
  56 static unsigned int find_best(struct vf_instance* vf, unsigned int fmt){
  57     unsigned int best=0;
  58     int ret;
  59     const unsigned int* p;
  60     if(fmt==IMGFMT_BGR8) p=bgr_list;
  61     else if(fmt==IMGFMT_RGB8) p=rgb_list;
  62     else return 0;
  63     while(*p){
  64         ret=vf->next->query_format(vf->next,*p);
  65         mp_msg(MSGT_VFILTER,MSGL_DBG2,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
  66         if(ret&VFCAP_CSP_SUPPORTED_BY_HW){ best=*p; break;} // no conversion -> bingo!
  67         if(ret&VFCAP_CSP_SUPPORTED && !best) best=*p; // best with conversion
  68         ++p;
  69     }
  70     return best;
  71 }
  72
  73 //===========================================================================//
  74
  75 struct vf_priv_s {
  76     unsigned int fmt;
  77     int pal_msg;
  78 };
  79
  80 static int config(struct vf_instance* vf,
  81         int width, int height, int d_width, int d_height,
  82         unsigned int flags, unsigned int outfmt){
  83     if (!vf->priv->fmt)
  84         vf->priv->fmt=find_best(vf,outfmt);
  85     if(!vf->priv->fmt){
  86         // no matching fmt, so force one...
  87         if(outfmt==IMGFMT_RGB8) vf->priv->fmt=IMGFMT_RGB32;
  88         else if(outfmt==IMGFMT_BGR8) vf->priv->fmt=IMGFMT_BGR32;
  89         else return 0;
  90     }
  91     return vf_next_config(vf,width,height,d_width,d_height,flags,vf->priv->fmt);
  92 }
  93
  94 static int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts){
  95     mp_image_t *dmpi;
  96     uint8_t *old_palette = mpi->planes[1];
  97
  98     // hope we'll get DR buffer:
  99     dmpi=vf_get_image(vf->next,vf->priv->fmt,
 100         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 101         mpi->w, mpi->h);
 102
 103     if (!mpi->planes[1])
 104     {
 105         if(!vf->priv->pal_msg){
 106             mp_msg(MSGT_VFILTER,MSGL_V,"[%s] no palette given, assuming builtin grayscale one\n",vf->info->name);
 107             vf->priv->pal_msg=1;
 108         }
 109         mpi->planes[1] = (unsigned char*)gray_pal;
 110     }
 111
 112     if(mpi->w==mpi->stride[0] && dmpi->w*(dmpi->bpp>>3)==dmpi->stride[0]){
 113         // no stride conversion needed
 114         switch(IMGFMT_RGB_DEPTH(dmpi->imgfmt)){
 115         case 15:
 116             if (IMGFMT_IS_BGR(dmpi->imgfmt))
 117                 palette8tobgr15(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 118             else
 119                 palette8torgb15(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 120             break;
 121         case 16:
 122             if (IMGFMT_IS_BGR(dmpi->imgfmt))
 123                 palette8tobgr16(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 124             else
 125                 palette8torgb16(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 126             break;
 127         case 24:
 128             if (IMGFMT_IS_BGR(dmpi->imgfmt))
 129                 palette8topacked24(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 130             else
 131                 palette8topacked24(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 132             break;
 133         case 32:
 134             if (IMGFMT_IS_BGR(dmpi->imgfmt))
 135                 palette8topacked32(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 136             else
 137                 palette8topacked32(mpi->planes[0],dmpi->planes[0],mpi->h*mpi->w,mpi->planes[1]);
 138             break;
 139         }
 140     } else {
 141         int y;
 142         for(y=0;y<mpi->h;y++){
 143             unsigned char* src=mpi->planes[0]+y*mpi->stride[0];
 144             unsigned char* dst=dmpi->planes[0]+y*dmpi->stride[0];
 145             switch(IMGFMT_RGB_DEPTH(dmpi->imgfmt)){
 146             case 15:
 147                 if (IMGFMT_IS_BGR(dmpi->imgfmt))
 148                     palette8tobgr15(src,dst,mpi->w,mpi->planes[1]);
 149                 else
 150                     palette8torgb15(src,dst,mpi->w,mpi->planes[1]);
 151                 break;
 152             case 16:
 153                 if (IMGFMT_IS_BGR(dmpi->imgfmt))
 154                     palette8tobgr16(src,dst,mpi->w,mpi->planes[1]);
 155                 else
 156                     palette8torgb16(src,dst,mpi->w,mpi->planes[1]);
 157                 break;
 158             case 24:
 159                 if (IMGFMT_IS_BGR(dmpi->imgfmt))
 160                     palette8topacked24(src,dst,mpi->w,mpi->planes[1]);
 161                 else
 162                     palette8topacked24(src,dst,mpi->w,mpi->planes[1]);
 163                 break;
 164             case 32:
 165                 if (IMGFMT_IS_BGR(dmpi->imgfmt))
 166                     palette8topacked32(src,dst,mpi->w,mpi->planes[1]);
 167                 else
 168                     palette8topacked32(src,dst,mpi->w,mpi->planes[1]);
 169                 break;
 170             }
 171         }
 172     }
 173     mpi->planes[1] = old_palette;
 174
 175     return vf_next_put_image(vf,dmpi, pts);
 176 }
 177
 178 //===========================================================================//
 179
 180 static int query_format(struct vf_instance* vf, unsigned int fmt){
 181     int best=find_best(vf,fmt);
 182     if(!best) return 0; // no match
 183     return vf->next->query_format(vf->next,best);
 184 }
 185
 186 static void uninit(vf_instance_t *vf) {
 187   free(vf->priv);
 188 }
 189
 190 static int vf_open(vf_instance_t *vf, char *args){
 191     unsigned int i;
 192     vf->config=config;
 193     vf->uninit=uninit;
 194     vf->put_image=put_image;
 195     vf->query_format=query_format;
 196     vf->priv=malloc(sizeof(struct vf_priv_s));
 197     memset(vf->priv, 0, sizeof(struct vf_priv_s));
 198     for(i=0;i<256;i++) gray_pal[i]=0x01010101*i;
 199     if (args)
 200     {
 201         if (!strcasecmp(args,"rgb15")) vf->priv->fmt=IMGFMT_RGB15; else
 202         if (!strcasecmp(args,"rgb16")) vf->priv->fmt=IMGFMT_RGB16; else
 203         if (!strcasecmp(args,"rgb24")) vf->priv->fmt=IMGFMT_RGB24; else
 204         if (!strcasecmp(args,"rgb32")) vf->priv->fmt=IMGFMT_RGB32; else
 205         if (!strcasecmp(args,"bgr15")) vf->priv->fmt=IMGFMT_BGR15; else
 206         if (!strcasecmp(args,"bgr16")) vf->priv->fmt=IMGFMT_BGR16; else
 207         if (!strcasecmp(args,"bgr24")) vf->priv->fmt=IMGFMT_BGR24; else
 208         if (!strcasecmp(args,"bgr32")) vf->priv->fmt=IMGFMT_BGR32; else
 209         {
 210             mp_tmsg(MSGT_VFILTER, MSGL_WARN, "[VF_FORMAT] Unknown format name: '%s'.\n", args);
 211             return 0;
 212         }
 213     }
 214     return 1;
 215 }
 216
 217 const vf_info_t vf_info_palette = {
 218     "8bpp indexed (using palette) -> BGR 15/16/24/32 conversion",
 219     "palette",
 220     "A'rpi & Alex",
 221     "",
 222     vf_open,
 223     NULL
 224 };
 225
 226 //===========================================================================//