FFmpeg
rv30dsp.c
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1 /*
2  * RV30 decoder motion compensation functions
3  * Copyright (c) 2007 Konstantin Shishkov
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  * RV30 decoder motion compensation functions
25  */
26 
27 #include "avcodec.h"
28 #include "h264chroma.h"
29 #include "h264qpel.h"
30 #include "mathops.h"
31 #include "rv34dsp.h"
32 
33 #define RV30_LOWPASS(OPNAME, OP) \
34 static void OPNAME ## rv30_tpel8_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, const int C1, const int C2){\
35  const int h = 8;\
36  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
37  int i;\
38  for(i = 0; i < h; i++)\
39  {\
40  OP(dst[0], (-(src[-1]+src[2]) + src[0]*C1 + src[1]*C2 + 8)>>4);\
41  OP(dst[1], (-(src[ 0]+src[3]) + src[1]*C1 + src[2]*C2 + 8)>>4);\
42  OP(dst[2], (-(src[ 1]+src[4]) + src[2]*C1 + src[3]*C2 + 8)>>4);\
43  OP(dst[3], (-(src[ 2]+src[5]) + src[3]*C1 + src[4]*C2 + 8)>>4);\
44  OP(dst[4], (-(src[ 3]+src[6]) + src[4]*C1 + src[5]*C2 + 8)>>4);\
45  OP(dst[5], (-(src[ 4]+src[7]) + src[5]*C1 + src[6]*C2 + 8)>>4);\
46  OP(dst[6], (-(src[ 5]+src[8]) + src[6]*C1 + src[7]*C2 + 8)>>4);\
47  OP(dst[7], (-(src[ 6]+src[9]) + src[7]*C1 + src[8]*C2 + 8)>>4);\
48  dst += dstStride;\
49  src += srcStride;\
50  }\
51 }\
52 \
53 static void OPNAME ## rv30_tpel8_v_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, const int C1, const int C2){\
54  const int w = 8;\
55  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
56  int i;\
57  for(i = 0; i < w; i++)\
58  {\
59  const int srcA = src[-1*srcStride];\
60  const int src0 = src[0 *srcStride];\
61  const int src1 = src[1 *srcStride];\
62  const int src2 = src[2 *srcStride];\
63  const int src3 = src[3 *srcStride];\
64  const int src4 = src[4 *srcStride];\
65  const int src5 = src[5 *srcStride];\
66  const int src6 = src[6 *srcStride];\
67  const int src7 = src[7 *srcStride];\
68  const int src8 = src[8 *srcStride];\
69  const int src9 = src[9 *srcStride];\
70  OP(dst[0*dstStride], (-(srcA+src2) + src0*C1 + src1*C2 + 8)>>4);\
71  OP(dst[1*dstStride], (-(src0+src3) + src1*C1 + src2*C2 + 8)>>4);\
72  OP(dst[2*dstStride], (-(src1+src4) + src2*C1 + src3*C2 + 8)>>4);\
73  OP(dst[3*dstStride], (-(src2+src5) + src3*C1 + src4*C2 + 8)>>4);\
74  OP(dst[4*dstStride], (-(src3+src6) + src4*C1 + src5*C2 + 8)>>4);\
75  OP(dst[5*dstStride], (-(src4+src7) + src5*C1 + src6*C2 + 8)>>4);\
76  OP(dst[6*dstStride], (-(src5+src8) + src6*C1 + src7*C2 + 8)>>4);\
77  OP(dst[7*dstStride], (-(src6+src9) + src7*C1 + src8*C2 + 8)>>4);\
78  dst++;\
79  src++;\
80  }\
81 }\
82 \
83 static void OPNAME ## rv30_tpel8_hv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
84  const int w = 8;\
85  const int h = 8;\
86  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
87  int i, j;\
88  for(j = 0; j < h; j++){\
89  for(i = 0; i < w; i++){\
90  OP(dst[i], (\
91  src[srcStride*-1+i-1] -12*src[srcStride*-1+i] -6*src[srcStride*-1+i+1] +src[srcStride*-1+i+2]+\
92  -12*src[srcStride* 0+i-1] +144*src[srcStride* 0+i] +72*src[srcStride* 0+i+1] -12*src[srcStride* 0+i+2] +\
93  -6*src[srcStride* 1+i-1] +72*src[srcStride* 1+i] +36*src[srcStride* 1+i+1] -6*src[srcStride* 1+i+2] +\
94  src[srcStride* 2+i-1] -12*src[srcStride* 2+i] -6*src[srcStride* 2+i+1] +src[srcStride* 2+i+2] +\
95  128)>>8);\
96  }\
97  src += srcStride;\
98  dst += dstStride;\
99  }\
100 }\
101 \
102 static void OPNAME ## rv30_tpel8_hhv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
103  const int w = 8;\
104  const int h = 8;\
105  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
106  int i, j;\
107  for(j = 0; j < h; j++){\
108  for(i = 0; i < w; i++){\
109  OP(dst[i], (\
110  src[srcStride*-1+i-1] -12*src[srcStride*-1+i+1] -6*src[srcStride*-1+i] +src[srcStride*-1+i+2]+\
111  -12*src[srcStride* 0+i-1] +144*src[srcStride* 0+i+1] +72*src[srcStride* 0+i] -12*src[srcStride* 0+i+2]+\
112  -6*src[srcStride* 1+i-1] +72*src[srcStride* 1+i+1] +36*src[srcStride* 1+i] -6*src[srcStride* 1+i+2]+\
113  src[srcStride* 2+i-1] -12*src[srcStride* 2+i+1] -6*src[srcStride* 2+i] +src[srcStride* 2+i+2]+\
114  128)>>8);\
115  }\
116  src += srcStride;\
117  dst += dstStride;\
118  }\
119 }\
120 \
121 static void OPNAME ## rv30_tpel8_hvv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
122  const int w = 8;\
123  const int h = 8;\
124  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
125  int i, j;\
126  for(j = 0; j < h; j++){\
127  for(i = 0; i < w; i++){\
128  OP(dst[i], (\
129  src[srcStride*-1+i-1] -12*src[srcStride*-1+i] -6*src[srcStride*-1+i+1] +src[srcStride*-1+i+2]+\
130  -6*src[srcStride* 0+i-1] +72*src[srcStride* 0+i] +36*src[srcStride* 0+i+1] -6*src[srcStride* 0+i+2]+\
131  -12*src[srcStride* 1+i-1] +144*src[srcStride* 1+i] +72*src[srcStride* 1+i+1] -12*src[srcStride* 1+i+2]+\
132  src[srcStride* 2+i-1] -12*src[srcStride* 2+i] -6*src[srcStride* 2+i+1] +src[srcStride* 2+i+2]+\
133  128)>>8);\
134  }\
135  src += srcStride;\
136  dst += dstStride;\
137  }\
138 }\
139 \
140 static void OPNAME ## rv30_tpel8_hhvv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
141  const int w = 8;\
142  const int h = 8;\
143  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
144  int i, j;\
145  for(j = 0; j < h; j++){\
146  for(i = 0; i < w; i++){\
147  OP(dst[i], (\
148  36*src[i+srcStride*0] +54*src[i+1+srcStride*0] +6*src[i+2+srcStride*0]+\
149  54*src[i+srcStride*1] +81*src[i+1+srcStride*1] +9*src[i+2+srcStride*1]+\
150  6*src[i+srcStride*2] + 9*src[i+1+srcStride*2] + src[i+2+srcStride*2]+\
151  128)>>8);\
152  }\
153  src += srcStride;\
154  dst += dstStride;\
155  }\
156 }\
157 \
158 static void OPNAME ## rv30_tpel16_v_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, const int C1, const int C2){\
159  OPNAME ## rv30_tpel8_v_lowpass(dst , src , dstStride, srcStride, C1, C2);\
160  OPNAME ## rv30_tpel8_v_lowpass(dst+8, src+8, dstStride, srcStride, C1, C2);\
161  src += 8*srcStride;\
162  dst += 8*dstStride;\
163  OPNAME ## rv30_tpel8_v_lowpass(dst , src , dstStride, srcStride, C1, C2);\
164  OPNAME ## rv30_tpel8_v_lowpass(dst+8, src+8, dstStride, srcStride, C1, C2);\
165 }\
166 \
167 static void OPNAME ## rv30_tpel16_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, const int C1, const int C2){\
168  OPNAME ## rv30_tpel8_h_lowpass(dst , src , dstStride, srcStride, C1, C2);\
169  OPNAME ## rv30_tpel8_h_lowpass(dst+8, src+8, dstStride, srcStride, C1, C2);\
170  src += 8*srcStride;\
171  dst += 8*dstStride;\
172  OPNAME ## rv30_tpel8_h_lowpass(dst , src , dstStride, srcStride, C1, C2);\
173  OPNAME ## rv30_tpel8_h_lowpass(dst+8, src+8, dstStride, srcStride, C1, C2);\
174 }\
175 \
176 static void OPNAME ## rv30_tpel16_hv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
177  OPNAME ## rv30_tpel8_hv_lowpass(dst , src , dstStride, srcStride);\
178  OPNAME ## rv30_tpel8_hv_lowpass(dst+8, src+8, dstStride, srcStride);\
179  src += 8*srcStride;\
180  dst += 8*dstStride;\
181  OPNAME ## rv30_tpel8_hv_lowpass(dst , src , dstStride, srcStride);\
182  OPNAME ## rv30_tpel8_hv_lowpass(dst+8, src+8, dstStride, srcStride);\
183 }\
184 \
185 static void OPNAME ## rv30_tpel16_hhv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
186  OPNAME ## rv30_tpel8_hhv_lowpass(dst , src , dstStride, srcStride);\
187  OPNAME ## rv30_tpel8_hhv_lowpass(dst+8, src+8, dstStride, srcStride);\
188  src += 8*srcStride;\
189  dst += 8*dstStride;\
190  OPNAME ## rv30_tpel8_hhv_lowpass(dst , src , dstStride, srcStride);\
191  OPNAME ## rv30_tpel8_hhv_lowpass(dst+8, src+8, dstStride, srcStride);\
192 }\
193 \
194 static void OPNAME ## rv30_tpel16_hvv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
195  OPNAME ## rv30_tpel8_hvv_lowpass(dst , src , dstStride, srcStride);\
196  OPNAME ## rv30_tpel8_hvv_lowpass(dst+8, src+8, dstStride, srcStride);\
197  src += 8*srcStride;\
198  dst += 8*dstStride;\
199  OPNAME ## rv30_tpel8_hvv_lowpass(dst , src , dstStride, srcStride);\
200  OPNAME ## rv30_tpel8_hvv_lowpass(dst+8, src+8, dstStride, srcStride);\
201 }\
202 \
203 static void OPNAME ## rv30_tpel16_hhvv_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride){\
204  OPNAME ## rv30_tpel8_hhvv_lowpass(dst , src , dstStride, srcStride);\
205  OPNAME ## rv30_tpel8_hhvv_lowpass(dst+8, src+8, dstStride, srcStride);\
206  src += 8*srcStride;\
207  dst += 8*dstStride;\
208  OPNAME ## rv30_tpel8_hhvv_lowpass(dst , src , dstStride, srcStride);\
209  OPNAME ## rv30_tpel8_hhvv_lowpass(dst+8, src+8, dstStride, srcStride);\
210 }\
211 \
212 
213 #define RV30_MC(OPNAME, SIZE) \
214 static void OPNAME ## rv30_tpel ## SIZE ## _mc10_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
215 {\
216  OPNAME ## rv30_tpel ## SIZE ## _h_lowpass(dst, src, stride, stride, 12, 6);\
217 }\
218 \
219 static void OPNAME ## rv30_tpel ## SIZE ## _mc20_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
220 {\
221  OPNAME ## rv30_tpel ## SIZE ## _h_lowpass(dst, src, stride, stride, 6, 12);\
222 }\
223 \
224 static void OPNAME ## rv30_tpel ## SIZE ## _mc01_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
225 {\
226  OPNAME ## rv30_tpel ## SIZE ## _v_lowpass(dst, src, stride, stride, 12, 6);\
227 }\
228 \
229 static void OPNAME ## rv30_tpel ## SIZE ## _mc02_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
230 {\
231  OPNAME ## rv30_tpel ## SIZE ## _v_lowpass(dst, src, stride, stride, 6, 12);\
232 }\
233 \
234 static void OPNAME ## rv30_tpel ## SIZE ## _mc11_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
235 {\
236  OPNAME ## rv30_tpel ## SIZE ## _hv_lowpass(dst, src, stride, stride);\
237 }\
238 \
239 static void OPNAME ## rv30_tpel ## SIZE ## _mc12_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
240 {\
241  OPNAME ## rv30_tpel ## SIZE ## _hvv_lowpass(dst, src, stride, stride);\
242 }\
243 \
244 static void OPNAME ## rv30_tpel ## SIZE ## _mc21_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
245 {\
246  OPNAME ## rv30_tpel ## SIZE ## _hhv_lowpass(dst, src, stride, stride);\
247 }\
248 \
249 static void OPNAME ## rv30_tpel ## SIZE ## _mc22_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
250 {\
251  OPNAME ## rv30_tpel ## SIZE ## _hhvv_lowpass(dst, src, stride, stride);\
252 }\
253 \
254 
255 #define op_avg(a, b) a = (((a)+cm[b]+1)>>1)
256 #define op_put(a, b) a = cm[b]
257 
258 RV30_LOWPASS(put_ , op_put)
259 RV30_LOWPASS(avg_ , op_avg)
260 RV30_MC(put_, 8)
261 RV30_MC(put_, 16)
262 RV30_MC(avg_, 8)
263 RV30_MC(avg_, 16)
264 
265 av_cold void ff_rv30dsp_init(RV34DSPContext *c)
266 {
267  H264ChromaContext h264chroma;
268  H264QpelContext qpel;
269 
270  ff_rv34dsp_init(c);
271  ff_h264chroma_init(&h264chroma, 8);
272  ff_h264qpel_init(&qpel, 8);
273 
274  c->put_pixels_tab[0][ 0] = qpel.put_h264_qpel_pixels_tab[0][0];
275  c->put_pixels_tab[0][ 1] = put_rv30_tpel16_mc10_c;
276  c->put_pixels_tab[0][ 2] = put_rv30_tpel16_mc20_c;
277  c->put_pixels_tab[0][ 4] = put_rv30_tpel16_mc01_c;
278  c->put_pixels_tab[0][ 5] = put_rv30_tpel16_mc11_c;
279  c->put_pixels_tab[0][ 6] = put_rv30_tpel16_mc21_c;
280  c->put_pixels_tab[0][ 8] = put_rv30_tpel16_mc02_c;
281  c->put_pixels_tab[0][ 9] = put_rv30_tpel16_mc12_c;
282  c->put_pixels_tab[0][10] = put_rv30_tpel16_mc22_c;
283  c->avg_pixels_tab[0][ 0] = qpel.avg_h264_qpel_pixels_tab[0][0];
284  c->avg_pixels_tab[0][ 1] = avg_rv30_tpel16_mc10_c;
285  c->avg_pixels_tab[0][ 2] = avg_rv30_tpel16_mc20_c;
286  c->avg_pixels_tab[0][ 4] = avg_rv30_tpel16_mc01_c;
287  c->avg_pixels_tab[0][ 5] = avg_rv30_tpel16_mc11_c;
288  c->avg_pixels_tab[0][ 6] = avg_rv30_tpel16_mc21_c;
289  c->avg_pixels_tab[0][ 8] = avg_rv30_tpel16_mc02_c;
290  c->avg_pixels_tab[0][ 9] = avg_rv30_tpel16_mc12_c;
291  c->avg_pixels_tab[0][10] = avg_rv30_tpel16_mc22_c;
292  c->put_pixels_tab[1][ 0] = qpel.put_h264_qpel_pixels_tab[1][0];
293  c->put_pixels_tab[1][ 1] = put_rv30_tpel8_mc10_c;
294  c->put_pixels_tab[1][ 2] = put_rv30_tpel8_mc20_c;
295  c->put_pixels_tab[1][ 4] = put_rv30_tpel8_mc01_c;
296  c->put_pixels_tab[1][ 5] = put_rv30_tpel8_mc11_c;
297  c->put_pixels_tab[1][ 6] = put_rv30_tpel8_mc21_c;
298  c->put_pixels_tab[1][ 8] = put_rv30_tpel8_mc02_c;
299  c->put_pixels_tab[1][ 9] = put_rv30_tpel8_mc12_c;
300  c->put_pixels_tab[1][10] = put_rv30_tpel8_mc22_c;
301  c->avg_pixels_tab[1][ 0] = qpel.avg_h264_qpel_pixels_tab[1][0];
302  c->avg_pixels_tab[1][ 1] = avg_rv30_tpel8_mc10_c;
303  c->avg_pixels_tab[1][ 2] = avg_rv30_tpel8_mc20_c;
304  c->avg_pixels_tab[1][ 4] = avg_rv30_tpel8_mc01_c;
305  c->avg_pixels_tab[1][ 5] = avg_rv30_tpel8_mc11_c;
306  c->avg_pixels_tab[1][ 6] = avg_rv30_tpel8_mc21_c;
307  c->avg_pixels_tab[1][ 8] = avg_rv30_tpel8_mc02_c;
308  c->avg_pixels_tab[1][ 9] = avg_rv30_tpel8_mc12_c;
309  c->avg_pixels_tab[1][10] = avg_rv30_tpel8_mc22_c;
310 
311  c->put_chroma_pixels_tab[0] = h264chroma.put_h264_chroma_pixels_tab[0];
312  c->put_chroma_pixels_tab[1] = h264chroma.put_h264_chroma_pixels_tab[1];
313  c->avg_chroma_pixels_tab[0] = h264chroma.avg_h264_chroma_pixels_tab[0];
314  c->avg_chroma_pixels_tab[1] = h264chroma.avg_h264_chroma_pixels_tab[1];
315 }
H264ChromaContext::avg_h264_chroma_pixels_tab
h264_chroma_mc_func avg_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:29
H264QpelContext::avg_h264_qpel_pixels_tab
qpel_mc_func avg_h264_qpel_pixels_tab[4][16]
Definition: h264qpel.h:29
h264qpel.h
ff_rv30dsp_init
av_cold void ff_rv30dsp_init(RV34DSPContext *c)
Definition: rv30dsp.c:265
op_put
#define op_put(a, b)
Definition: rv30dsp.c:256
op_avg
#define op_avg(a, b)
Definition: rv30dsp.c:255
ff_h264qpel_init
av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
Definition: h264qpel.c:49
av_cold
#define av_cold
Definition: attributes.h:90
ff_rv34dsp_init
av_cold void ff_rv34dsp_init(RV34DSPContext *c)
Definition: rv34dsp.c:131
mathops.h
H264ChromaContext::put_h264_chroma_pixels_tab
h264_chroma_mc_func put_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:28
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
RV34DSPContext
Definition: rv34dsp.h:57
RV30_MC
#define RV30_MC(OPNAME, SIZE)
Definition: rv30dsp.c:213
rv34dsp.h
h264chroma.h
ff_h264chroma_init
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
H264QpelContext
Definition: h264qpel.h:27
avcodec.h
H264QpelContext::put_h264_qpel_pixels_tab
qpel_mc_func put_h264_qpel_pixels_tab[4][16]
Definition: h264qpel.h:28
H264ChromaContext
Definition: h264chroma.h:27
RV30_LOWPASS
#define RV30_LOWPASS(OPNAME, OP)
Definition: rv30dsp.c:33
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