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libavfilter/libmpcodecs/vf_eq.c

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00001 /*
00002  * This file is part of MPlayer.
00003  *
00004  * MPlayer is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * MPlayer is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License along
00015  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
00016  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00017  */
00018 
00019 #include <stdio.h>
00020 #include <stdlib.h>
00021 #include <string.h>
00022 #include <inttypes.h>
00023 
00024 #include "config.h"
00025 #include "mp_msg.h"
00026 #include "cpudetect.h"
00027 
00028 #include "img_format.h"
00029 #include "mp_image.h"
00030 #include "vf.h"
00031 
00032 #include "libvo/video_out.h"
00033 
00034 static struct vf_priv_s {
00035         unsigned char *buf;
00036         int brightness;
00037         int contrast;
00038 };
00039 
00040 #if HAVE_MMX
00041 static void process_MMX(unsigned char *dest, int dstride, unsigned char *src, int sstride,
00042                     int w, int h, int brightness, int contrast)
00043 {
00044         int i;
00045         int pel;
00046         int dstep = dstride-w;
00047         int sstep = sstride-w;
00048         short brvec[4];
00049         short contvec[4];
00050 
00051         contrast = ((contrast+100)*256*16)/100;
00052         brightness = ((brightness+100)*511)/200-128 - contrast/32;
00053 
00054         brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness;
00055         contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast;
00056 
00057         while (h--) {
00058                 __asm__ volatile (
00059                         "movq (%5), %%mm3 \n\t"
00060                         "movq (%6), %%mm4 \n\t"
00061                         "pxor %%mm0, %%mm0 \n\t"
00062                         "movl %4, %%eax\n\t"
00063                         ASMALIGN(4)
00064                         "1: \n\t"
00065                         "movq (%0), %%mm1 \n\t"
00066                         "movq (%0), %%mm2 \n\t"
00067                         "punpcklbw %%mm0, %%mm1 \n\t"
00068                         "punpckhbw %%mm0, %%mm2 \n\t"
00069                         "psllw $4, %%mm1 \n\t"
00070                         "psllw $4, %%mm2 \n\t"
00071                         "pmulhw %%mm4, %%mm1 \n\t"
00072                         "pmulhw %%mm4, %%mm2 \n\t"
00073                         "paddw %%mm3, %%mm1 \n\t"
00074                         "paddw %%mm3, %%mm2 \n\t"
00075                         "packuswb %%mm2, %%mm1 \n\t"
00076                         "add $8, %0 \n\t"
00077                         "movq %%mm1, (%1) \n\t"
00078                         "add $8, %1 \n\t"
00079                         "decl %%eax \n\t"
00080                         "jnz 1b \n\t"
00081                         : "=r" (src), "=r" (dest)
00082                         : "0" (src), "1" (dest), "r" (w>>3), "r" (brvec), "r" (contvec)
00083                         : "%eax"
00084                 );
00085 
00086                 for (i = w&7; i; i--)
00087                 {
00088                         pel = ((*src++* contrast)>>12) + brightness;
00089                         if(pel&768) pel = (-pel)>>31;
00090                         *dest++ = pel;
00091                 }
00092 
00093                 src += sstep;
00094                 dest += dstep;
00095         }
00096         __asm__ volatile ( "emms \n\t" ::: "memory" );
00097 }
00098 #endif
00099 
00100 static void process_C(unsigned char *dest, int dstride, unsigned char *src, int sstride,
00101                     int w, int h, int brightness, int contrast)
00102 {
00103         int i;
00104         int pel;
00105         int dstep = dstride-w;
00106         int sstep = sstride-w;
00107 
00108         contrast = ((contrast+100)*256*256)/100;
00109         brightness = ((brightness+100)*511)/200-128 - contrast/512;
00110 
00111         while (h--) {
00112                 for (i = w; i; i--)
00113                 {
00114                         pel = ((*src++* contrast)>>16) + brightness;
00115                         if(pel&768) pel = (-pel)>>31;
00116                         *dest++ = pel;
00117                 }
00118                 src += sstep;
00119                 dest += dstep;
00120         }
00121 }
00122 
00123 static void (*process)(unsigned char *dest, int dstride, unsigned char *src, int sstride,
00124                        int w, int h, int brightness, int contrast);
00125 
00126 /* FIXME: add packed yuv version of process */
00127 
00128 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
00129 {
00130         mp_image_t *dmpi;
00131 
00132         dmpi=vf_get_image(vf->next, mpi->imgfmt,
00133                           MP_IMGTYPE_EXPORT, 0,
00134                           mpi->w, mpi->h);
00135 
00136         dmpi->stride[0] = mpi->stride[0];
00137         dmpi->planes[1] = mpi->planes[1];
00138         dmpi->planes[2] = mpi->planes[2];
00139         dmpi->stride[1] = mpi->stride[1];
00140         dmpi->stride[2] = mpi->stride[2];
00141 
00142         if (!vf->priv->buf) vf->priv->buf = malloc(mpi->stride[0]*mpi->h);
00143 
00144         if ((vf->priv->brightness == 0) && (vf->priv->contrast == 0))
00145                 dmpi->planes[0] = mpi->planes[0];
00146         else {
00147                 dmpi->planes[0] = vf->priv->buf;
00148                 process(dmpi->planes[0], dmpi->stride[0],
00149                         mpi->planes[0], mpi->stride[0],
00150                         mpi->w, mpi->h, vf->priv->brightness,
00151                         vf->priv->contrast);
00152         }
00153 
00154         return vf_next_put_image(vf,dmpi, pts);
00155 }
00156 
00157 static int control(struct vf_instance *vf, int request, void* data)
00158 {
00159         vf_equalizer_t *eq;
00160 
00161         switch (request) {
00162         case VFCTRL_SET_EQUALIZER:
00163                 eq = data;
00164                 if (!strcmp(eq->item,"brightness")) {
00165                         vf->priv->brightness = eq->value;
00166                         return CONTROL_TRUE;
00167                 }
00168                 else if (!strcmp(eq->item,"contrast")) {
00169                         vf->priv->contrast = eq->value;
00170                         return CONTROL_TRUE;
00171                 }
00172                 break;
00173         case VFCTRL_GET_EQUALIZER:
00174                 eq = data;
00175                 if (!strcmp(eq->item,"brightness")) {
00176                         eq->value = vf->priv->brightness;
00177                         return CONTROL_TRUE;
00178                 }
00179                 else if (!strcmp(eq->item,"contrast")) {
00180                         eq->value = vf->priv->contrast;
00181                         return CONTROL_TRUE;
00182                 }
00183                 break;
00184         }
00185         return vf_next_control(vf, request, data);
00186 }
00187 
00188 static int query_format(struct vf_instance *vf, unsigned int fmt)
00189 {
00190         switch (fmt) {
00191         case IMGFMT_YVU9:
00192         case IMGFMT_IF09:
00193         case IMGFMT_YV12:
00194         case IMGFMT_I420:
00195         case IMGFMT_IYUV:
00196         case IMGFMT_CLPL:
00197         case IMGFMT_Y800:
00198         case IMGFMT_Y8:
00199         case IMGFMT_NV12:
00200         case IMGFMT_NV21:
00201         case IMGFMT_444P:
00202         case IMGFMT_422P:
00203         case IMGFMT_411P:
00204                 return vf_next_query_format(vf, fmt);
00205         }
00206         return 0;
00207 }
00208 
00209 static void uninit(struct vf_instance *vf)
00210 {
00211         free(vf->priv->buf);
00212         free(vf->priv);
00213 }
00214 
00215 static int vf_open(vf_instance_t *vf, char *args)
00216 {
00217         vf->control=control;
00218         vf->query_format=query_format;
00219         vf->put_image=put_image;
00220         vf->uninit=uninit;
00221 
00222     vf->priv = malloc(sizeof(struct vf_priv_s));
00223     memset(vf->priv, 0, sizeof(struct vf_priv_s));
00224     if (args) sscanf(args, "%d:%d", &vf->priv->brightness, &vf->priv->contrast);
00225 
00226         process = process_C;
00227 #if HAVE_MMX
00228         if(gCpuCaps.hasMMX) process = process_MMX;
00229 #endif
00230 
00231         return 1;
00232 }
00233 
00234 const vf_info_t vf_info_eq = {
00235         "soft video equalizer",
00236         "eq",
00237         "Richard Felker",
00238         "",
00239         vf_open,
00240 };

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