libmpcodecs/vf_yuvcsp.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 struct vf_priv_s {
  32     int csp;
  33 };
  34
  35 //===========================================================================//
  36
  37 static int config(struct vf_instance* vf,
  38         int width, int height, int d_width, int d_height,
  39         unsigned int flags, unsigned int outfmt){
  40     return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
  41 }
  42
  43 static inline int clamp_y(int x){
  44     return (x > 235) ? 235 : (x < 16) ? 16 : x;
  45 }
  46
  47 static inline int clamp_c(int x){
  48     return (x > 240) ? 240 : (x < 16) ? 16 : x;
  49 }
  50
  51 static int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts){
  52     int i,j;
  53     uint8_t *y_in, *cb_in, *cr_in;
  54     uint8_t *y_out, *cb_out, *cr_out;
  55
  56     vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
  57         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
  58         mpi->width, mpi->height);
  59
  60     y_in = mpi->planes[0];
  61     cb_in = mpi->planes[1];
  62     cr_in = mpi->planes[2];
  63
  64     y_out = vf->dmpi->planes[0];
  65     cb_out = vf->dmpi->planes[1];
  66     cr_out = vf->dmpi->planes[2];
  67
  68     for (i = 0; i < mpi->height; i++)
  69         for (j = 0; j < mpi->width; j++)
  70             y_out[i*vf->dmpi->stride[0]+j] = clamp_y(y_in[i*mpi->stride[0]+j]);
  71
  72     for (i = 0; i < mpi->chroma_height; i++)
  73         for (j = 0; j < mpi->chroma_width; j++)
  74         {
  75             cb_out[i*vf->dmpi->stride[1]+j] = clamp_c(cb_in[i*mpi->stride[1]+j]);
  76             cr_out[i*vf->dmpi->stride[2]+j] = clamp_c(cr_in[i*mpi->stride[2]+j]);
  77         }
  78
  79     return vf_next_put_image(vf,vf->dmpi, pts);
  80 }
  81
  82 //===========================================================================//
  83
  84 /*
  85 static void uninit(struct vf_instance* vf){
  86         free(vf->priv);
  87 }
  88 */
  89
  90 static int query_format(struct vf_instance* vf, unsigned int fmt){
  91     switch(fmt){
  92         case IMGFMT_YV12:
  93         case IMGFMT_I420:
  94         case IMGFMT_IYUV:
  95             return 1;
  96     }
  97     return 0;
  98 }
  99
 100 static int vf_open(vf_instance_t *vf, char *args){
 101     vf->config=config;
 102     vf->put_image=put_image;
 103 //    vf->uninit=uninit;
 104     vf->query_format=query_format;
 105 //    vf->priv=calloc(1, sizeof(struct vf_priv_s));
 106 //    if (args)
 107 //      vf->priv->csp = atoi(args);
 108     return 1;
 109 }
 110
 111 const vf_info_t vf_info_yuvcsp = {
 112     "yuv colorspace converter",
 113     "yuvcsp",
 114     "Alex Beregszaszi",
 115     "",
 116     vf_open,
 117     NULL
 118 };
 119
 120 //===========================================================================//