30 #define IdctAdjustBeforeShift 8
39 #define M(a,b) (((a) * (b))>>16)
45 int A,
B, C,
D, Ad, Bd, Cd, Dd,
E,
F,
G,
H;
46 int Ed, Gd, Add, Bdd, Fd, Hd;
51 for (i = 0; i < 8; i++) {
53 if ( ip[0] | ip[1] | ip[2] | ip[3] | ip[4] | ip[5] | ip[6] | ip[7] ) {
65 E =
M(
xC4S4, (ip[0] + ip[4]));
66 F =
M(
xC4S4, (ip[0] - ip[4]));
99 for ( i = 0; i < 8; i++) {
101 if ( ip[1 * 8] | ip[2 * 8] | ip[3 * 8] |
102 ip[4 * 8] | ip[5 * 8] | ip[6 * 8] | ip[7 * 8] ) {
115 E =
M(
xC4S4, (ip[0*8] + ip[4*8])) + 8;
116 F =
M(
xC4S4, (ip[0*8] - ip[4*8])) + 8;
137 ip[0*8] = (Gd + Cd ) >> 4;
138 ip[7*8] = (Gd - Cd ) >> 4;
140 ip[1*8] = (Add + Hd ) >> 4;
141 ip[2*8] = (Add - Hd ) >> 4;
143 ip[3*8] = (Ed + Dd ) >> 4;
144 ip[4*8] = (Ed - Dd ) >> 4;
146 ip[5*8] = (Fd + Bdd ) >> 4;
147 ip[6*8] = (Fd - Bdd ) >> 4;
149 dst[0*
stride] = av_clip_uint8((Gd + Cd ) >> 4);
150 dst[7*
stride] = av_clip_uint8((Gd - Cd ) >> 4);
152 dst[1*
stride] = av_clip_uint8((Add + Hd ) >> 4);
153 dst[2*
stride] = av_clip_uint8((Add - Hd ) >> 4);
155 dst[3*
stride] = av_clip_uint8((Ed + Dd ) >> 4);
156 dst[4*
stride] = av_clip_uint8((Ed - Dd ) >> 4);
158 dst[5*
stride] = av_clip_uint8((Fd + Bdd ) >> 4);
159 dst[6*
stride] = av_clip_uint8((Fd - Bdd ) >> 4);
161 dst[0*
stride] = av_clip_uint8(dst[0*stride] + ((Gd + Cd ) >> 4));
162 dst[7*
stride] = av_clip_uint8(dst[7*stride] + ((Gd - Cd ) >> 4));
164 dst[1*
stride] = av_clip_uint8(dst[1*stride] + ((Add + Hd ) >> 4));
165 dst[2*
stride] = av_clip_uint8(dst[2*stride] + ((Add - Hd ) >> 4));
167 dst[3*
stride] = av_clip_uint8(dst[3*stride] + ((Ed + Dd ) >> 4));
168 dst[4*
stride] = av_clip_uint8(dst[4*stride] + ((Ed - Dd ) >> 4));
170 dst[5*
stride] = av_clip_uint8(dst[5*stride] + ((Fd + Bdd ) >> 4));
171 dst[6*
stride] = av_clip_uint8(dst[6*stride] + ((Fd - Bdd ) >> 4));
183 ip[7*8] = ((
xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
195 int v= ((
xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
196 dst[0*
stride] = av_clip_uint8(dst[0*stride] + v);
197 dst[1*
stride] = av_clip_uint8(dst[1*stride] + v);
198 dst[2*
stride] = av_clip_uint8(dst[2*stride] + v);
199 dst[3*
stride] = av_clip_uint8(dst[3*stride] + v);
200 dst[4*
stride] = av_clip_uint8(dst[4*stride] + v);
201 dst[5*
stride] = av_clip_uint8(dst[5*stride] + v);
202 dst[6*
stride] = av_clip_uint8(dst[6*stride] + v);
203 dst[7*
stride] = av_clip_uint8(dst[7*stride] + v);
218 idct(dest, line_size, block, 1);
222 idct(dest, line_size, block, 2);
226 int i, dc = (block[0] + 15) >> 5;
228 for(i = 0; i < 8; i++){
229 dest[0] = av_clip_uint8(dest[0] + dc);
230 dest[1] = av_clip_uint8(dest[1] + dc);
231 dest[2] = av_clip_uint8(dest[2] + dc);
232 dest[3] = av_clip_uint8(dest[3] + dc);
233 dest[4] = av_clip_uint8(dest[4] + dc);
234 dest[5] = av_clip_uint8(dest[5] + dc);
235 dest[6] = av_clip_uint8(dest[6] + dc);
236 dest[7] = av_clip_uint8(dest[7] + dc);
245 const int nstride= -
stride;
247 for (end= first_pixel + 8; first_pixel < end; first_pixel++) {
249 (first_pixel[2 * nstride] - first_pixel[
stride])
250 +3*(first_pixel[0 ] - first_pixel[nstride]);
251 filter_value = bounding_values[(filter_value + 4) >> 3];
252 first_pixel[nstride] = av_clip_uint8(first_pixel[nstride] + filter_value);
253 first_pixel[0] = av_clip_uint8(first_pixel[0] - filter_value);
262 for (end= first_pixel + 8*stride; first_pixel != end; first_pixel +=
stride) {
264 (first_pixel[-2] - first_pixel[ 1])
265 +3*(first_pixel[ 0] - first_pixel[-1]);
266 filter_value = bounding_values[(filter_value + 4) >> 3];
267 first_pixel[-1] = av_clip_uint8(first_pixel[-1] + filter_value);
268 first_pixel[ 0] = av_clip_uint8(first_pixel[ 0] - filter_value);