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comparison libavcodec/h264_dsp.c @ 2:897f711a7157

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rearrange to work with autoconf
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Tue, 25 Sep 2012 15:55:33 +0200
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1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * H.264 / AVC / MPEG4 part10 DSP functions.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #include <stdint.h>
29 #include "avcodec.h"
30 #include "h264_dsp.h"
31
32 #define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + offset) >> log2_denom )
33 #define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + offset) >> (log2_denom+1))
34 #define H264_WEIGHT(W,H) \
35 static void weight_h264_pixels ## W ## x ## H ## _c(uint8_t *block, int stride, int log2_denom, int weight, int offset){ \
36 int y; \
37 offset <<= log2_denom; \
38 if(log2_denom) offset += 1<<(log2_denom-1); \
39 for(y=0; y<H; y++, block += stride){ \
40 op_scale1(0); \
41 op_scale1(1); \
42 if(W==2) continue; \
43 op_scale1(2); \
44 op_scale1(3); \
45 if(W==4) continue; \
46 op_scale1(4); \
47 op_scale1(5); \
48 op_scale1(6); \
49 op_scale1(7); \
50 if(W==8) continue; \
51 op_scale1(8); \
52 op_scale1(9); \
53 op_scale1(10); \
54 op_scale1(11); \
55 op_scale1(12); \
56 op_scale1(13); \
57 op_scale1(14); \
58 op_scale1(15); \
59 } \
60 } \
61 static void biweight_h264_pixels ## W ## x ## H ## _c(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offset){ \
62 int y; \
63 offset = ((offset + 1) | 1) << log2_denom; \
64 for(y=0; y<H; y++, dst += stride, src += stride){ \
65 op_scale2(0); \
66 op_scale2(1); \
67 if(W==2) continue; \
68 op_scale2(2); \
69 op_scale2(3); \
70 if(W==4) continue; \
71 op_scale2(4); \
72 op_scale2(5); \
73 op_scale2(6); \
74 op_scale2(7); \
75 if(W==8) continue; \
76 op_scale2(8); \
77 op_scale2(9); \
78 op_scale2(10); \
79 op_scale2(11); \
80 op_scale2(12); \
81 op_scale2(13); \
82 op_scale2(14); \
83 op_scale2(15); \
84 } \
85 }
86
87 H264_WEIGHT(16,16)
88 H264_WEIGHT(16,8)
89 H264_WEIGHT(8,16)
90 H264_WEIGHT(8,8)
91 H264_WEIGHT(8,4)
92 H264_WEIGHT(4,8)
93 H264_WEIGHT(4,4)
94 H264_WEIGHT(4,2)
95 H264_WEIGHT(2,4)
96 H264_WEIGHT(2,2)
97
98 #undef op_scale1
99 #undef op_scale2
100 #undef H264_WEIGHT
101
102 static av_always_inline void h264_loop_filter_luma_c(uint8_t *pix, int xstride, int ystride, int alpha, int beta, int8_t *tc0)
103 {
104 int i, d;
105 for( i = 0; i < 4; i++ ) {
106 if( tc0[i] < 0 ) {
107 pix += 4*ystride;
108 continue;
109 }
110 for( d = 0; d < 4; d++ ) {
111 const int p0 = pix[-1*xstride];
112 const int p1 = pix[-2*xstride];
113 const int p2 = pix[-3*xstride];
114 const int q0 = pix[0];
115 const int q1 = pix[1*xstride];
116 const int q2 = pix[2*xstride];
117
118 if( FFABS( p0 - q0 ) < alpha &&
119 FFABS( p1 - p0 ) < beta &&
120 FFABS( q1 - q0 ) < beta ) {
121
122 int tc = tc0[i];
123 int i_delta;
124
125 if( FFABS( p2 - p0 ) < beta ) {
126 if(tc0[i])
127 pix[-2*xstride] = p1 + av_clip( (( p2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - p1, -tc0[i], tc0[i] );
128 tc++;
129 }
130 if( FFABS( q2 - q0 ) < beta ) {
131 if(tc0[i])
132 pix[ xstride] = q1 + av_clip( (( q2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - q1, -tc0[i], tc0[i] );
133 tc++;
134 }
135
136 i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
137 pix[-xstride] = av_clip_uint8( p0 + i_delta ); /* p0' */
138 pix[0] = av_clip_uint8( q0 - i_delta ); /* q0' */
139 }
140 pix += ystride;
141 }
142 }
143 }
144 static void h264_v_loop_filter_luma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)
145 {
146 h264_loop_filter_luma_c(pix, stride, 1, alpha, beta, tc0);
147 }
148 static void h264_h_loop_filter_luma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)
149 {
150 h264_loop_filter_luma_c(pix, 1, stride, alpha, beta, tc0);
151 }
152
153 static av_always_inline void h264_loop_filter_luma_intra_c(uint8_t *pix, int xstride, int ystride, int alpha, int beta)
154 {
155 int d;
156 for( d = 0; d < 16; d++ ) {
157 const int p2 = pix[-3*xstride];
158 const int p1 = pix[-2*xstride];
159 const int p0 = pix[-1*xstride];
160
161 const int q0 = pix[ 0*xstride];
162 const int q1 = pix[ 1*xstride];
163 const int q2 = pix[ 2*xstride];
164
165 if( FFABS( p0 - q0 ) < alpha &&
166 FFABS( p1 - p0 ) < beta &&
167 FFABS( q1 - q0 ) < beta ) {
168
169 if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){
170 if( FFABS( p2 - p0 ) < beta)
171 {
172 const int p3 = pix[-4*xstride];
173 /* p0', p1', p2' */
174 pix[-1*xstride] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3;
175 pix[-2*xstride] = ( p2 + p1 + p0 + q0 + 2 ) >> 2;
176 pix[-3*xstride] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3;
177 } else {
178 /* p0' */
179 pix[-1*xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
180 }
181 if( FFABS( q2 - q0 ) < beta)
182 {
183 const int q3 = pix[3*xstride];
184 /* q0', q1', q2' */
185 pix[0*xstride] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3;
186 pix[1*xstride] = ( p0 + q0 + q1 + q2 + 2 ) >> 2;
187 pix[2*xstride] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3;
188 } else {
189 /* q0' */
190 pix[0*xstride] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
191 }
192 }else{
193 /* p0', q0' */
194 pix[-1*xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
195 pix[ 0*xstride] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
196 }
197 }
198 pix += ystride;
199 }
200 }
201 static void h264_v_loop_filter_luma_intra_c(uint8_t *pix, int stride, int alpha, int beta)
202 {
203 h264_loop_filter_luma_intra_c(pix, stride, 1, alpha, beta);
204 }
205 static void h264_h_loop_filter_luma_intra_c(uint8_t *pix, int stride, int alpha, int beta)
206 {
207 h264_loop_filter_luma_intra_c(pix, 1, stride, alpha, beta);
208 }
209
210 static av_always_inline void h264_loop_filter_chroma_c(uint8_t *pix, int xstride, int ystride, int alpha, int beta, int8_t *tc0)
211 {
212 int i, d;
213 for( i = 0; i < 4; i++ ) {
214 const int tc = tc0[i];
215 if( tc <= 0 ) {
216 pix += 2*ystride;
217 continue;
218 }
219 for( d = 0; d < 2; d++ ) {
220 const int p0 = pix[-1*xstride];
221 const int p1 = pix[-2*xstride];
222 const int q0 = pix[0];
223 const int q1 = pix[1*xstride];
224
225 if( FFABS( p0 - q0 ) < alpha &&
226 FFABS( p1 - p0 ) < beta &&
227 FFABS( q1 - q0 ) < beta ) {
228
229 int delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
230
231 pix[-xstride] = av_clip_uint8( p0 + delta ); /* p0' */
232 pix[0] = av_clip_uint8( q0 - delta ); /* q0' */
233 }
234 pix += ystride;
235 }
236 }
237 }
238 static void h264_v_loop_filter_chroma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)
239 {
240 h264_loop_filter_chroma_c(pix, stride, 1, alpha, beta, tc0);
241 }
242 static void h264_h_loop_filter_chroma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)
243 {
244 h264_loop_filter_chroma_c(pix, 1, stride, alpha, beta, tc0);
245 }
246
247 static av_always_inline void h264_loop_filter_chroma_intra_c(uint8_t *pix, int xstride, int ystride, int alpha, int beta)
248 {
249 int d;
250 for( d = 0; d < 8; d++ ) {
251 const int p0 = pix[-1*xstride];
252 const int p1 = pix[-2*xstride];
253 const int q0 = pix[0];
254 const int q1 = pix[1*xstride];
255
256 if( FFABS( p0 - q0 ) < alpha &&
257 FFABS( p1 - p0 ) < beta &&
258 FFABS( q1 - q0 ) < beta ) {
259
260 pix[-xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; /* p0' */
261 pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; /* q0' */
262 }
263 pix += ystride;
264 }
265 }
266 static void h264_v_loop_filter_chroma_intra_c(uint8_t *pix, int stride, int alpha, int beta)
267 {
268 h264_loop_filter_chroma_intra_c(pix, stride, 1, alpha, beta);
269 }
270 static void h264_h_loop_filter_chroma_intra_c(uint8_t *pix, int stride, int alpha, int beta)
271 {
272 h264_loop_filter_chroma_intra_c(pix, 1, stride, alpha, beta);
273 }
274
275 void ff_h264dsp_init(H264DSPContext *c)
276 {
277 c->h264_idct_add= ff_h264_idct_add_c;
278 c->h264_idct8_add= ff_h264_idct8_add_c;
279 c->h264_idct_dc_add= ff_h264_idct_dc_add_c;
280 c->h264_idct8_dc_add= ff_h264_idct8_dc_add_c;
281 c->h264_idct_add16 = ff_h264_idct_add16_c;
282 c->h264_idct8_add4 = ff_h264_idct8_add4_c;
283 c->h264_idct_add8 = ff_h264_idct_add8_c;
284 c->h264_idct_add16intra= ff_h264_idct_add16intra_c;
285
286 c->weight_h264_pixels_tab[0]= weight_h264_pixels16x16_c;
287 c->weight_h264_pixels_tab[1]= weight_h264_pixels16x8_c;
288 c->weight_h264_pixels_tab[2]= weight_h264_pixels8x16_c;
289 c->weight_h264_pixels_tab[3]= weight_h264_pixels8x8_c;
290 c->weight_h264_pixels_tab[4]= weight_h264_pixels8x4_c;
291 c->weight_h264_pixels_tab[5]= weight_h264_pixels4x8_c;
292 c->weight_h264_pixels_tab[6]= weight_h264_pixels4x4_c;
293 c->weight_h264_pixels_tab[7]= weight_h264_pixels4x2_c;
294 c->weight_h264_pixels_tab[8]= weight_h264_pixels2x4_c;
295 c->weight_h264_pixels_tab[9]= weight_h264_pixels2x2_c;
296 c->biweight_h264_pixels_tab[0]= biweight_h264_pixels16x16_c;
297 c->biweight_h264_pixels_tab[1]= biweight_h264_pixels16x8_c;
298 c->biweight_h264_pixels_tab[2]= biweight_h264_pixels8x16_c;
299 c->biweight_h264_pixels_tab[3]= biweight_h264_pixels8x8_c;
300 c->biweight_h264_pixels_tab[4]= biweight_h264_pixels8x4_c;
301 c->biweight_h264_pixels_tab[5]= biweight_h264_pixels4x8_c;
302 c->biweight_h264_pixels_tab[6]= biweight_h264_pixels4x4_c;
303 c->biweight_h264_pixels_tab[7]= biweight_h264_pixels4x2_c;
304 c->biweight_h264_pixels_tab[8]= biweight_h264_pixels2x4_c;
305 c->biweight_h264_pixels_tab[9]= biweight_h264_pixels2x2_c;
306
307 c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_c;
308 c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_c;
309 c->h264_v_loop_filter_luma_intra= h264_v_loop_filter_luma_intra_c;
310 c->h264_h_loop_filter_luma_intra= h264_h_loop_filter_luma_intra_c;
311 c->h264_v_loop_filter_chroma= h264_v_loop_filter_chroma_c;
312 c->h264_h_loop_filter_chroma= h264_h_loop_filter_chroma_c;
313 c->h264_v_loop_filter_chroma_intra= h264_v_loop_filter_chroma_intra_c;
314 c->h264_h_loop_filter_chroma_intra= h264_h_loop_filter_chroma_intra_c;
315 c->h264_loop_filter_strength= NULL;
316
317 if (ARCH_ARM) ff_h264dsp_init_arm(c);
318 if (HAVE_ALTIVEC) ff_h264dsp_init_ppc(c);
319 if (HAVE_MMX) ff_h264dsp_init_x86(c);
320 }