ao_pulse: work around PulseAudio timing bugs
[mplayer.git] / libmpcodecs / vf_boxblur.c
blobcc15efccf4dec890c9695f8a2d57172159484e42
1 /*
2 * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of MPlayer.
6 * MPlayer is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * MPlayer is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <inttypes.h>
25 #include <assert.h>
27 #include "mp_msg.h"
28 #include "img_format.h"
29 #include "mp_image.h"
30 #include "vf.h"
33 //===========================================================================//
35 typedef struct FilterParam{
36 int radius;
37 int power;
38 }FilterParam;
40 struct vf_priv_s {
41 FilterParam lumaParam;
42 FilterParam chromaParam;
46 /***************************************************************************/
49 static int config(struct vf_instance *vf,
50 int width, int height, int d_width, int d_height,
51 unsigned int flags, unsigned int outfmt){
53 return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
56 static inline void blur(uint8_t *dst, uint8_t *src, int w, int radius, int dstStep, int srcStep){
57 int x;
58 const int length= radius*2 + 1;
59 const int inv= ((1<<16) + length/2)/length;
61 int sum= 0;
63 for(x=0; x<radius; x++){
64 sum+= src[x*srcStep]<<1;
66 sum+= src[radius*srcStep];
68 for(x=0; x<=radius; x++){
69 sum+= src[(radius+x)*srcStep] - src[(radius-x)*srcStep];
70 dst[x*dstStep]= (sum*inv + (1<<15))>>16;
73 for(; x<w-radius; x++){
74 sum+= src[(radius+x)*srcStep] - src[(x-radius-1)*srcStep];
75 dst[x*dstStep]= (sum*inv + (1<<15))>>16;
78 for(; x<w; x++){
79 sum+= src[(2*w-radius-x-1)*srcStep] - src[(x-radius-1)*srcStep];
80 dst[x*dstStep]= (sum*inv + (1<<15))>>16;
84 static inline void blur2(uint8_t *dst, uint8_t *src, int w, int radius, int power, int dstStep, int srcStep){
85 uint8_t temp[2][4096];
86 uint8_t *a= temp[0], *b=temp[1];
88 if(radius){
89 blur(a, src, w, radius, 1, srcStep);
90 for(; power>2; power--){
91 uint8_t *c;
92 blur(b, a, w, radius, 1, 1);
93 c=a; a=b; b=c;
95 if(power>1)
96 blur(dst, a, w, radius, dstStep, 1);
97 else{
98 int i;
99 for(i=0; i<w; i++)
100 dst[i*dstStep]= a[i];
102 }else{
103 int i;
104 for(i=0; i<w; i++)
105 dst[i*dstStep]= src[i*srcStep];
109 static void hBlur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int radius, int power){
110 int y;
112 if(radius==0 && dst==src) return;
114 for(y=0; y<h; y++){
115 blur2(dst + y*dstStride, src + y*srcStride, w, radius, power, 1, 1);
119 //FIXME optimize (x before y !!!)
120 static void vBlur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int radius, int power){
121 int x;
123 if(radius==0 && dst==src) return;
125 for(x=0; x<w; x++){
126 blur2(dst + x, src + x, h, radius, power, dstStride, srcStride);
130 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
131 int cw= mpi->w >> mpi->chroma_x_shift;
132 int ch= mpi->h >> mpi->chroma_y_shift;
134 mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
135 MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_READABLE,
136 mpi->w,mpi->h);
138 assert(mpi->flags&MP_IMGFLAG_PLANAR);
140 hBlur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h,
141 dmpi->stride[0], mpi->stride[0], vf->priv->lumaParam.radius, vf->priv->lumaParam.power);
142 hBlur(dmpi->planes[1], mpi->planes[1], cw,ch,
143 dmpi->stride[1], mpi->stride[1], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
144 hBlur(dmpi->planes[2], mpi->planes[2], cw,ch,
145 dmpi->stride[2], mpi->stride[2], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
147 vBlur(dmpi->planes[0], dmpi->planes[0], mpi->w,mpi->h,
148 dmpi->stride[0], dmpi->stride[0], vf->priv->lumaParam.radius, vf->priv->lumaParam.power);
149 vBlur(dmpi->planes[1], dmpi->planes[1], cw,ch,
150 dmpi->stride[1], dmpi->stride[1], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
151 vBlur(dmpi->planes[2], dmpi->planes[2], cw,ch,
152 dmpi->stride[2], dmpi->stride[2], vf->priv->chromaParam.radius, vf->priv->chromaParam.power);
154 return vf_next_put_image(vf,dmpi, pts);
157 //===========================================================================//
159 static int query_format(struct vf_instance *vf, unsigned int fmt){
160 switch(fmt)
162 case IMGFMT_YV12:
163 case IMGFMT_I420:
164 case IMGFMT_IYUV:
165 case IMGFMT_YVU9:
166 case IMGFMT_444P:
167 case IMGFMT_422P:
168 case IMGFMT_411P:
169 return vf_next_query_format(vf, fmt);
171 return 0;
174 static int vf_open(vf_instance_t *vf, char *args){
175 int e;
177 vf->config=config;
178 vf->put_image=put_image;
179 // vf->get_image=get_image;
180 vf->query_format=query_format;
181 vf->priv=malloc(sizeof(struct vf_priv_s));
182 memset(vf->priv, 0, sizeof(struct vf_priv_s));
184 if(args==NULL) return 0;
186 e=sscanf(args, "%d:%d:%d:%d",
187 &vf->priv->lumaParam.radius,
188 &vf->priv->lumaParam.power,
189 &vf->priv->chromaParam.radius,
190 &vf->priv->chromaParam.power
193 if(e==2){
194 vf->priv->chromaParam.radius= vf->priv->lumaParam.radius;
195 vf->priv->chromaParam.power = vf->priv->lumaParam.power;
196 }else if(e!=4)
197 return 0;
199 if(vf->priv->lumaParam.radius < 0) return 0;
200 if(vf->priv->chromaParam.radius < 0) return 0;
202 return 1;
205 const vf_info_t vf_info_boxblur = {
206 "box blur",
207 "boxblur",
208 "Michael Niedermayer",
210 vf_open,
211 NULL
214 //===========================================================================//