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mpegvideoencdsp.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <assert.h>
20 #include <stdint.h>
21 #include <string.h>
22 
23 #include "config.h"
24 #include "libavutil/avassert.h"
25 #include "libavutil/attributes.h"
26 #include "libavutil/imgutils.h"
27 #include "avcodec.h"
28 #include "me_cmp.h"
29 #include "mpegvideoencdsp.h"
30 
31 static int try_8x8basis_c(int16_t rem[64], int16_t weight[64],
32  int16_t basis[64], int scale)
33 {
34  int i;
35  unsigned int sum = 0;
36 
37  for (i = 0; i < 8 * 8; i++) {
38  int b = rem[i] + ((basis[i] * scale +
39  (1 << (BASIS_SHIFT - RECON_SHIFT - 1))) >>
41  int w = weight[i];
42  b >>= RECON_SHIFT;
43  av_assert2(-512 < b && b < 512);
44 
45  sum += (w * b) * (w * b) >> 4;
46  }
47  return sum >> 2;
48 }
49 
50 static void add_8x8basis_c(int16_t rem[64], int16_t basis[64], int scale)
51 {
52  int i;
53 
54  for (i = 0; i < 8 * 8; i++)
55  rem[i] += (basis[i] * scale +
56  (1 << (BASIS_SHIFT - RECON_SHIFT - 1))) >>
58 }
59 
60 static int pix_sum_c(uint8_t *pix, int line_size)
61 {
62  int s = 0, i, j;
63 
64  for (i = 0; i < 16; i++) {
65  for (j = 0; j < 16; j += 8) {
66  s += pix[0];
67  s += pix[1];
68  s += pix[2];
69  s += pix[3];
70  s += pix[4];
71  s += pix[5];
72  s += pix[6];
73  s += pix[7];
74  pix += 8;
75  }
76  pix += line_size - 16;
77  }
78  return s;
79 }
80 
81 static int pix_norm1_c(uint8_t *pix, int line_size)
82 {
83  int s = 0, i, j;
84  uint32_t *sq = ff_square_tab + 256;
85 
86  for (i = 0; i < 16; i++) {
87  for (j = 0; j < 16; j += 8) {
88 #if HAVE_FAST_64BIT
89  register uint64_t x = *(uint64_t *) pix;
90  s += sq[x & 0xff];
91  s += sq[(x >> 8) & 0xff];
92  s += sq[(x >> 16) & 0xff];
93  s += sq[(x >> 24) & 0xff];
94  s += sq[(x >> 32) & 0xff];
95  s += sq[(x >> 40) & 0xff];
96  s += sq[(x >> 48) & 0xff];
97  s += sq[(x >> 56) & 0xff];
98 #else
99  register uint32_t x = *(uint32_t *) pix;
100  s += sq[x & 0xff];
101  s += sq[(x >> 8) & 0xff];
102  s += sq[(x >> 16) & 0xff];
103  s += sq[(x >> 24) & 0xff];
104  x = *(uint32_t *) (pix + 4);
105  s += sq[x & 0xff];
106  s += sq[(x >> 8) & 0xff];
107  s += sq[(x >> 16) & 0xff];
108  s += sq[(x >> 24) & 0xff];
109 #endif
110  pix += 8;
111  }
112  pix += line_size - 16;
113  }
114  return s;
115 }
116 
117 /* draw the edges of width 'w' of an image of size width, height */
118 // FIXME: Check that this is OK for MPEG-4 interlaced.
119 static void draw_edges_8_c(uint8_t *buf, int wrap, int width, int height,
120  int w, int h, int sides)
121 {
122  uint8_t *ptr = buf, *last_line;
123  int i;
124 
125  /* left and right */
126  for (i = 0; i < height; i++) {
127  memset(ptr - w, ptr[0], w);
128  memset(ptr + width, ptr[width - 1], w);
129  ptr += wrap;
130  }
131 
132  /* top and bottom + corners */
133  buf -= w;
134  last_line = buf + (height - 1) * wrap;
135  if (sides & EDGE_TOP)
136  for (i = 0; i < h; i++)
137  // top
138  memcpy(buf - (i + 1) * wrap, buf, width + w + w);
139  if (sides & EDGE_BOTTOM)
140  for (i = 0; i < h; i++)
141  // bottom
142  memcpy(last_line + (i + 1) * wrap, last_line, width + w + w);
143 }
144 
145 /* 2x2 -> 1x1 */
146 static void shrink22(uint8_t *dst, int dst_wrap,
147  const uint8_t *src, int src_wrap,
148  int width, int height)
149 {
150  int w;
151  const uint8_t *s1, *s2;
152  uint8_t *d;
153 
154  for (; height > 0; height--) {
155  s1 = src;
156  s2 = s1 + src_wrap;
157  d = dst;
158  for (w = width; w >= 4; w -= 4) {
159  d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
160  d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
161  d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
162  d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
163  s1 += 8;
164  s2 += 8;
165  d += 4;
166  }
167  for (; w > 0; w--) {
168  d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
169  s1 += 2;
170  s2 += 2;
171  d++;
172  }
173  src += 2 * src_wrap;
174  dst += dst_wrap;
175  }
176 }
177 
178 /* 4x4 -> 1x1 */
179 static void shrink44(uint8_t *dst, int dst_wrap,
180  const uint8_t *src, int src_wrap,
181  int width, int height)
182 {
183  int w;
184  const uint8_t *s1, *s2, *s3, *s4;
185  uint8_t *d;
186 
187  for (; height > 0; height--) {
188  s1 = src;
189  s2 = s1 + src_wrap;
190  s3 = s2 + src_wrap;
191  s4 = s3 + src_wrap;
192  d = dst;
193  for (w = width; w > 0; w--) {
194  d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
195  s2[0] + s2[1] + s2[2] + s2[3] +
196  s3[0] + s3[1] + s3[2] + s3[3] +
197  s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
198  s1 += 4;
199  s2 += 4;
200  s3 += 4;
201  s4 += 4;
202  d++;
203  }
204  src += 4 * src_wrap;
205  dst += dst_wrap;
206  }
207 }
208 
209 /* 8x8 -> 1x1 */
210 static void shrink88(uint8_t *dst, int dst_wrap,
211  const uint8_t *src, int src_wrap,
212  int width, int height)
213 {
214  int w, i;
215 
216  for (; height > 0; height--) {
217  for(w = width;w > 0; w--) {
218  int tmp = 0;
219  for (i = 0; i < 8; i++) {
220  tmp += src[0] + src[1] + src[2] + src[3] +
221  src[4] + src[5] + src[6] + src[7];
222  src += src_wrap;
223  }
224  *(dst++) = (tmp + 32) >> 6;
225  src += 8 - 8 * src_wrap;
226  }
227  src += 8 * src_wrap - 8 * width;
228  dst += dst_wrap - width;
229  }
230 }
231 
233  AVCodecContext *avctx)
234 {
237 
238  c->shrink[0] = av_image_copy_plane;
239  c->shrink[1] = shrink22;
240  c->shrink[2] = shrink44;
241  c->shrink[3] = shrink88;
242 
243  c->pix_sum = pix_sum_c;
244  c->pix_norm1 = pix_norm1_c;
245 
247 
248  if (ARCH_ARM)
249  ff_mpegvideoencdsp_init_arm(c, avctx);
250  if (ARCH_PPC)
251  ff_mpegvideoencdsp_init_ppc(c, avctx);
252  if (ARCH_X86)
253  ff_mpegvideoencdsp_init_x86(c, avctx);
254  if (ARCH_MIPS)
256 }
int(* try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale)
const char * s
Definition: avisynth_c.h:768
#define RECON_SHIFT
static int pix_norm1_c(uint8_t *pix, int line_size)
misc image utilities
void(* shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
void(* add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale)
const char * b
Definition: vf_curves.c:113
av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
#define EDGE_TOP
static void shrink22(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
#define src
Definition: vp8dsp.c:254
uint32_t ff_square_tab[512]
Definition: me_cmp.c:32
Macro definitions for various function/variable attributes.
av_cold void ff_mpegvideoencdsp_init_mips(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
static void shrink88(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
#define height
static void draw_edges_8_c(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
#define s2
Definition: regdef.h:39
#define wrap(func)
Definition: neontest.h:65
uint16_t width
Definition: gdv.c:47
simple assert() macros that are a bit more flexible than ISO C assert().
int(* pix_sum)(uint8_t *pix, int line_size)
#define s4
Definition: regdef.h:41
#define s3
Definition: regdef.h:40
static void add_8x8basis_c(int16_t rem[64], int16_t basis[64], int scale)
Libavcodec external API header.
av_cold void ff_mpegvideoencdsp_init_arm(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
main external API structure.
Definition: avcodec.h:1488
void * buf
Definition: avisynth_c.h:690
int(* pix_norm1)(uint8_t *pix, int line_size)
static int pix_sum_c(uint8_t *pix, int line_size)
#define s1
Definition: regdef.h:38
static int weight(int i, int blen, int offset)
Definition: diracdec.c:1523
#define BASIS_SHIFT
void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
static double c[64]
static int16_t basis[64][64]
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
static void shrink44(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
#define EDGE_BOTTOM
static int try_8x8basis_c(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale)
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:338
static uint8_t tmp[11]
Definition: aes_ctr.c:26