libmpcodecs/mp_image.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 <string.h>
  24
  25 #if HAVE_MALLOC_H
  26 #include <malloc.h>
  27 #endif
  28
  29 #include "libmpcodecs/img_format.h"
  30 #include "libmpcodecs/mp_image.h"
  31
  32 #include "libvo/fastmemcpy.h"
  33 #include "libavutil/mem.h"
  34
  35 void mp_image_alloc_planes(mp_image_t *mpi) {
  36   // IF09 - allocate space for 4. plane delta info - unused
  37   if (mpi->imgfmt == IMGFMT_IF09) {
  38     mpi->planes[0]=av_malloc(mpi->bpp*mpi->width*(mpi->height+2)/8+
  39                             mpi->chroma_width*mpi->chroma_height);
  40   } else
  41     mpi->planes[0]=av_malloc(mpi->bpp*mpi->width*(mpi->height+2)/8);
  42   if (mpi->flags&MP_IMGFLAG_PLANAR) {
  43     int bpp = IMGFMT_IS_YUVP16(mpi->imgfmt)? 2 : 1;
  44     // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
  45     mpi->stride[0]=mpi->stride[3]=bpp*mpi->width;
  46     if(mpi->num_planes > 2){
  47       mpi->stride[1]=mpi->stride[2]=bpp*mpi->chroma_width;
  48       if(mpi->flags&MP_IMGFLAG_SWAPPED){
  49         // I420/IYUV  (Y,U,V)
  50         mpi->planes[1]=mpi->planes[0]+mpi->stride[0]*mpi->height;
  51         mpi->planes[2]=mpi->planes[1]+mpi->stride[1]*mpi->chroma_height;
  52         if (mpi->num_planes > 3)
  53             mpi->planes[3]=mpi->planes[2]+mpi->stride[2]*mpi->chroma_height;
  54       } else {
  55         // YV12,YVU9,IF09  (Y,V,U)
  56         mpi->planes[2]=mpi->planes[0]+mpi->stride[0]*mpi->height;
  57         mpi->planes[1]=mpi->planes[2]+mpi->stride[1]*mpi->chroma_height;
  58         if (mpi->num_planes > 3)
  59             mpi->planes[3]=mpi->planes[1]+mpi->stride[1]*mpi->chroma_height;
  60       }
  61     } else {
  62       // NV12/NV21
  63       mpi->stride[1]=mpi->chroma_width;
  64       mpi->planes[1]=mpi->planes[0]+mpi->stride[0]*mpi->height;
  65     }
  66   } else {
  67     mpi->stride[0]=mpi->width*mpi->bpp/8;
  68     if (mpi->flags & MP_IMGFLAG_RGB_PALETTE)
  69       mpi->planes[1] = av_malloc(1024);
  70   }
  71   mpi->flags|=MP_IMGFLAG_ALLOCATED;
  72 }
  73
  74 mp_image_t* alloc_mpi(int w, int h, unsigned long int fmt) {
  75   mp_image_t* mpi = new_mp_image(w,h);
  76
  77   mp_image_setfmt(mpi,fmt);
  78   mp_image_alloc_planes(mpi);
  79
  80   return mpi;
  81 }
  82
  83 void copy_mpi(mp_image_t *dmpi, mp_image_t *mpi) {
  84   if(mpi->flags&MP_IMGFLAG_PLANAR){
  85     memcpy_pic(dmpi->planes[0],mpi->planes[0], mpi->w, mpi->h,
  86                dmpi->stride[0],mpi->stride[0]);
  87     memcpy_pic(dmpi->planes[1],mpi->planes[1], mpi->chroma_width, mpi->chroma_height,
  88                dmpi->stride[1],mpi->stride[1]);
  89     memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->chroma_width, mpi->chroma_height,
  90                dmpi->stride[2],mpi->stride[2]);
  91   } else {
  92     memcpy_pic(dmpi->planes[0],mpi->planes[0],
  93                mpi->w*(dmpi->bpp/8), mpi->h,
  94                dmpi->stride[0],mpi->stride[0]);
  95   }
  96 }
  97
  98 void mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt){
  99     mpi->flags&=~(MP_IMGFLAG_PLANAR|MP_IMGFLAG_YUV|MP_IMGFLAG_SWAPPED);
 100     mpi->imgfmt=out_fmt;
 101     // compressed formats
 102     if(out_fmt == IMGFMT_MPEGPES ||
 103        out_fmt == IMGFMT_ZRMJPEGNI || out_fmt == IMGFMT_ZRMJPEGIT || out_fmt == IMGFMT_ZRMJPEGIB ||
 104        IMGFMT_IS_HWACCEL(out_fmt)){
 105         mpi->bpp=0;
 106         return;
 107     }
 108     mpi->num_planes=1;
 109     if (IMGFMT_IS_RGB(out_fmt)) {
 110         if (IMGFMT_RGB_DEPTH(out_fmt) < 8 && !(out_fmt&128))
 111             mpi->bpp = IMGFMT_RGB_DEPTH(out_fmt);
 112         else
 113             mpi->bpp=(IMGFMT_RGB_DEPTH(out_fmt)+7)&(~7);
 114         return;
 115     }
 116     if (IMGFMT_IS_BGR(out_fmt)) {
 117         if (IMGFMT_BGR_DEPTH(out_fmt) < 8 && !(out_fmt&128))
 118             mpi->bpp = IMGFMT_BGR_DEPTH(out_fmt);
 119         else
 120             mpi->bpp=(IMGFMT_BGR_DEPTH(out_fmt)+7)&(~7);
 121         mpi->flags|=MP_IMGFLAG_SWAPPED;
 122         return;
 123     }
 124     mpi->flags|=MP_IMGFLAG_YUV;
 125     mpi->num_planes=3;
 126     if (mp_get_chroma_shift(out_fmt, NULL, NULL)) {
 127         mpi->flags|=MP_IMGFLAG_PLANAR;
 128         mpi->bpp = mp_get_chroma_shift(out_fmt, &mpi->chroma_x_shift, &mpi->chroma_y_shift);
 129         mpi->chroma_width  = mpi->width  >> mpi->chroma_x_shift;
 130         mpi->chroma_height = mpi->height >> mpi->chroma_y_shift;
 131     }
 132     switch(out_fmt){
 133     case IMGFMT_I420:
 134     case IMGFMT_IYUV:
 135         mpi->flags|=MP_IMGFLAG_SWAPPED;
 136     case IMGFMT_YV12:
 137         return;
 138     case IMGFMT_420A:
 139     case IMGFMT_IF09:
 140         mpi->num_planes=4;
 141     case IMGFMT_YVU9:
 142     case IMGFMT_444P:
 143     case IMGFMT_422P:
 144     case IMGFMT_411P:
 145     case IMGFMT_440P:
 146     case IMGFMT_444P16_LE:
 147     case IMGFMT_444P16_BE:
 148     case IMGFMT_422P16_LE:
 149     case IMGFMT_422P16_BE:
 150     case IMGFMT_420P16_LE:
 151     case IMGFMT_420P16_BE:
 152         return;
 153     case IMGFMT_Y800:
 154     case IMGFMT_Y8:
 155         /* they're planar ones, but for easier handling use them as packed */
 156         mpi->flags&=~MP_IMGFLAG_PLANAR;
 157         mpi->num_planes=1;
 158         return;
 159     case IMGFMT_UYVY:
 160         mpi->flags|=MP_IMGFLAG_SWAPPED;
 161     case IMGFMT_YUY2:
 162         mpi->bpp=16;
 163         mpi->num_planes=1;
 164         return;
 165     case IMGFMT_NV12:
 166         mpi->flags|=MP_IMGFLAG_SWAPPED;
 167     case IMGFMT_NV21:
 168         mpi->flags|=MP_IMGFLAG_PLANAR;
 169         mpi->bpp=12;
 170         mpi->num_planes=2;
 171         mpi->chroma_width=(mpi->width>>0);
 172         mpi->chroma_height=(mpi->height>>1);
 173         mpi->chroma_x_shift=0;
 174         mpi->chroma_y_shift=1;
 175         return;
 176     }
 177     mp_msg(MSGT_DECVIDEO,MSGL_WARN,"mp_image: unknown out_fmt: 0x%X\n",out_fmt);
 178     mpi->bpp=0;
 179 }
 180
 181 mp_image_t* new_mp_image(int w,int h){
 182     mp_image_t* mpi = malloc(sizeof(mp_image_t));
 183     if(!mpi) return NULL; // error!
 184     memset(mpi,0,sizeof(mp_image_t));
 185     mpi->width=mpi->w=w;
 186     mpi->height=mpi->h=h;
 187     return mpi;
 188 }
 189
 190 void free_mp_image(mp_image_t* mpi){
 191     if(!mpi) return;
 192     if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 193         /* becouse we allocate the whole image in once */
 194         av_free(mpi->planes[0]);
 195         if (mpi->flags & MP_IMGFLAG_RGB_PALETTE)
 196             av_free(mpi->planes[1]);
 197     }
 198     free(mpi);
 199 }
 200