h264dsp_init.c
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1 /*
2  * Copyright (c) 2004-2005 Michael Niedermayer, Loren Merritt
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg 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 GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/asm.h"
24 #include "libavutil/x86/cpu.h"
25 #include "libavcodec/h264dsp.h"
26 #include "dsputil_mmx.h"
27 
28 /***********************************/
29 /* IDCT */
30 #define IDCT_ADD_FUNC(NUM, DEPTH, OPT) \
31 void ff_h264_idct ## NUM ## _add_ ## DEPTH ## _ ## OPT(uint8_t *dst, \
32  int16_t *block, \
33  int stride);
34 
35 IDCT_ADD_FUNC(, 8, mmx)
36 IDCT_ADD_FUNC(, 10, sse2)
37 IDCT_ADD_FUNC(_dc, 8, mmxext)
38 IDCT_ADD_FUNC(_dc, 10, mmxext)
39 IDCT_ADD_FUNC(8_dc, 8, mmxext)
40 IDCT_ADD_FUNC(8_dc, 10, sse2)
41 IDCT_ADD_FUNC(8, 8, mmx)
42 IDCT_ADD_FUNC(8, 8, sse2)
43 IDCT_ADD_FUNC(8, 10, sse2)
44 IDCT_ADD_FUNC(, 10, avx)
45 IDCT_ADD_FUNC(8_dc, 10, avx)
46 IDCT_ADD_FUNC(8, 10, avx)
47 
48 
49 #define IDCT_ADD_REP_FUNC(NUM, REP, DEPTH, OPT) \
50 void ff_h264_idct ## NUM ## _add ## REP ## _ ## DEPTH ## _ ## OPT \
51  (uint8_t *dst, const int *block_offset, \
52  int16_t *block, int stride, const uint8_t nnzc[6 * 8]);
53 
54 IDCT_ADD_REP_FUNC(8, 4, 8, mmx)
55 IDCT_ADD_REP_FUNC(8, 4, 8, mmxext)
56 IDCT_ADD_REP_FUNC(8, 4, 8, sse2)
57 IDCT_ADD_REP_FUNC(8, 4, 10, sse2)
58 IDCT_ADD_REP_FUNC(8, 4, 10, avx)
59 IDCT_ADD_REP_FUNC(, 16, 8, mmx)
60 IDCT_ADD_REP_FUNC(, 16, 8, mmxext)
61 IDCT_ADD_REP_FUNC(, 16, 8, sse2)
62 IDCT_ADD_REP_FUNC(, 16, 10, sse2)
63 IDCT_ADD_REP_FUNC(, 16intra, 8, mmx)
64 IDCT_ADD_REP_FUNC(, 16intra, 8, mmxext)
65 IDCT_ADD_REP_FUNC(, 16intra, 8, sse2)
66 IDCT_ADD_REP_FUNC(, 16intra, 10, sse2)
67 IDCT_ADD_REP_FUNC(, 16, 10, avx)
68 IDCT_ADD_REP_FUNC(, 16intra, 10, avx)
69 
70 
71 #define IDCT_ADD_REP_FUNC2(NUM, REP, DEPTH, OPT) \
72 void ff_h264_idct ## NUM ## _add ## REP ## _ ## DEPTH ## _ ## OPT \
73  (uint8_t **dst, const int *block_offset, \
74  int16_t *block, int stride, const uint8_t nnzc[6 * 8]);
75 
76 IDCT_ADD_REP_FUNC2(, 8, 8, mmx)
77 IDCT_ADD_REP_FUNC2(, 8, 8, mmxext)
78 IDCT_ADD_REP_FUNC2(, 8, 8, sse2)
79 IDCT_ADD_REP_FUNC2(, 8, 10, sse2)
80 IDCT_ADD_REP_FUNC2(, 8, 10, avx)
81 
82 void ff_h264_luma_dc_dequant_idct_mmx(int16_t *output, int16_t *input, int qmul);
83 void ff_h264_luma_dc_dequant_idct_sse2(int16_t *output, int16_t *input, int qmul);
84 
85 /***********************************/
86 /* deblocking */
87 
88 void ff_h264_loop_filter_strength_mmxext(int16_t bS[2][4][4], uint8_t nnz[40],
89  int8_t ref[2][40],
90  int16_t mv[2][40][2],
91  int bidir, int edges, int step,
92  int mask_mv0, int mask_mv1, int field);
93 
94 #define LF_FUNC(DIR, TYPE, DEPTH, OPT) \
95 void ff_deblock_ ## DIR ## _ ## TYPE ## _ ## DEPTH ## _ ## OPT(uint8_t *pix, \
96  int stride, \
97  int alpha, \
98  int beta, \
99  int8_t *tc0);
100 #define LF_IFUNC(DIR, TYPE, DEPTH, OPT) \
101 void ff_deblock_ ## DIR ## _ ## TYPE ## _ ## DEPTH ## _ ## OPT(uint8_t *pix, \
102  int stride, \
103  int alpha, \
104  int beta);
105 
106 #define LF_FUNCS(type, depth) \
107 LF_FUNC(h, chroma, depth, mmxext) \
108 LF_IFUNC(h, chroma_intra, depth, mmxext) \
109 LF_FUNC(v, chroma, depth, mmxext) \
110 LF_IFUNC(v, chroma_intra, depth, mmxext) \
111 LF_FUNC(h, luma, depth, mmxext) \
112 LF_IFUNC(h, luma_intra, depth, mmxext) \
113 LF_FUNC(h, luma, depth, sse2) \
114 LF_IFUNC(h, luma_intra, depth, sse2) \
115 LF_FUNC(v, luma, depth, sse2) \
116 LF_IFUNC(v, luma_intra, depth, sse2) \
117 LF_FUNC(h, chroma, depth, sse2) \
118 LF_IFUNC(h, chroma_intra, depth, sse2) \
119 LF_FUNC(v, chroma, depth, sse2) \
120 LF_IFUNC(v, chroma_intra, depth, sse2) \
121 LF_FUNC(h, luma, depth, avx) \
122 LF_IFUNC(h, luma_intra, depth, avx) \
123 LF_FUNC(v, luma, depth, avx) \
124 LF_IFUNC(v, luma_intra, depth, avx) \
125 LF_FUNC(h, chroma, depth, avx) \
126 LF_IFUNC(h, chroma_intra, depth, avx) \
127 LF_FUNC(v, chroma, depth, avx) \
128 LF_IFUNC(v, chroma_intra, depth, avx)
129 
130 LF_FUNCS(uint8_t, 8)
131 LF_FUNCS(uint16_t, 10)
132 
133 #if ARCH_X86_32 && HAVE_MMXEXT_EXTERNAL
134 LF_FUNC(v8, luma, 8, mmxext)
135 static void ff_deblock_v_luma_8_mmxext(uint8_t *pix, int stride, int alpha,
136  int beta, int8_t *tc0)
137 {
138  if ((tc0[0] & tc0[1]) >= 0)
139  ff_deblock_v8_luma_8_mmxext(pix + 0, stride, alpha, beta, tc0);
140  if ((tc0[2] & tc0[3]) >= 0)
141  ff_deblock_v8_luma_8_mmxext(pix + 8, stride, alpha, beta, tc0 + 2);
142 }
143 LF_IFUNC(v8, luma_intra, 8, mmxext)
144 static void ff_deblock_v_luma_intra_8_mmxext(uint8_t *pix, int stride,
145  int alpha, int beta)
146 {
147  ff_deblock_v8_luma_intra_8_mmxext(pix + 0, stride, alpha, beta);
148  ff_deblock_v8_luma_intra_8_mmxext(pix + 8, stride, alpha, beta);
149 }
150 #endif /* ARCH_X86_32 && HAVE_MMXEXT_EXTERNAL */
151 
152 LF_FUNC(v, luma, 10, mmxext)
153 LF_IFUNC(v, luma_intra, 10, mmxext)
154 
155 /***********************************/
156 /* weighted prediction */
157 
158 #define H264_WEIGHT(W, OPT) \
159 void ff_h264_weight_ ## W ## _ ## OPT(uint8_t *dst, int stride, \
160  int height, int log2_denom, \
161  int weight, int offset);
162 
163 #define H264_BIWEIGHT(W, OPT) \
164 void ff_h264_biweight_ ## W ## _ ## OPT(uint8_t *dst, uint8_t *src, \
165  int stride, int height, \
166  int log2_denom, int weightd, \
167  int weights, int offset);
168 
169 #define H264_BIWEIGHT_MMX(W) \
170  H264_WEIGHT(W, mmxext) \
171  H264_BIWEIGHT(W, mmxext)
172 
173 #define H264_BIWEIGHT_MMX_SSE(W) \
174  H264_BIWEIGHT_MMX(W) \
175  H264_WEIGHT(W, sse2) \
176  H264_BIWEIGHT(W, sse2) \
177  H264_BIWEIGHT(W, ssse3)
178 
179 H264_BIWEIGHT_MMX_SSE(16)
180 H264_BIWEIGHT_MMX_SSE(8)
181 H264_BIWEIGHT_MMX(4)
182 
183 #define H264_WEIGHT_10(W, DEPTH, OPT) \
184 void ff_h264_weight_ ## W ## _ ## DEPTH ## _ ## OPT(uint8_t *dst, \
185  int stride, \
186  int height, \
187  int log2_denom, \
188  int weight, \
189  int offset);
190 
191 #define H264_BIWEIGHT_10(W, DEPTH, OPT) \
192 void ff_h264_biweight_ ## W ## _ ## DEPTH ## _ ## OPT(uint8_t *dst, \
193  uint8_t *src, \
194  int stride, \
195  int height, \
196  int log2_denom, \
197  int weightd, \
198  int weights, \
199  int offset);
200 
201 #define H264_BIWEIGHT_10_SSE(W, DEPTH) \
202  H264_WEIGHT_10(W, DEPTH, sse2) \
203  H264_WEIGHT_10(W, DEPTH, sse4) \
204  H264_BIWEIGHT_10(W, DEPTH, sse2) \
205  H264_BIWEIGHT_10(W, DEPTH, sse4)
206 
207 H264_BIWEIGHT_10_SSE(16, 10)
208 H264_BIWEIGHT_10_SSE(8, 10)
209 H264_BIWEIGHT_10_SSE(4, 10)
210 
211 av_cold void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth,
212  const int chroma_format_idc)
213 {
214 #if HAVE_YASM
215  int mm_flags = av_get_cpu_flags();
216 
217  if (chroma_format_idc == 1 && EXTERNAL_MMXEXT(mm_flags))
218  c->h264_loop_filter_strength = ff_h264_loop_filter_strength_mmxext;
219 
220  if (bit_depth == 8) {
221  if (EXTERNAL_MMX(mm_flags)) {
222  c->h264_idct_dc_add =
223  c->h264_idct_add = ff_h264_idct_add_8_mmx;
224  c->h264_idct8_dc_add =
225  c->h264_idct8_add = ff_h264_idct8_add_8_mmx;
226 
227  c->h264_idct_add16 = ff_h264_idct_add16_8_mmx;
228  c->h264_idct8_add4 = ff_h264_idct8_add4_8_mmx;
229  if (chroma_format_idc == 1)
230  c->h264_idct_add8 = ff_h264_idct_add8_8_mmx;
231  c->h264_idct_add16intra = ff_h264_idct_add16intra_8_mmx;
232  if (mm_flags & AV_CPU_FLAG_CMOV)
233  c->h264_luma_dc_dequant_idct = ff_h264_luma_dc_dequant_idct_mmx;
234 
235  if (EXTERNAL_MMXEXT(mm_flags)) {
236  c->h264_idct_dc_add = ff_h264_idct_dc_add_8_mmxext;
237  c->h264_idct8_dc_add = ff_h264_idct8_dc_add_8_mmxext;
238  c->h264_idct_add16 = ff_h264_idct_add16_8_mmxext;
239  c->h264_idct8_add4 = ff_h264_idct8_add4_8_mmxext;
240  if (chroma_format_idc == 1)
241  c->h264_idct_add8 = ff_h264_idct_add8_8_mmxext;
242  c->h264_idct_add16intra = ff_h264_idct_add16intra_8_mmxext;
243 
244  c->h264_v_loop_filter_chroma = ff_deblock_v_chroma_8_mmxext;
245  c->h264_v_loop_filter_chroma_intra = ff_deblock_v_chroma_intra_8_mmxext;
246  if (chroma_format_idc == 1) {
247  c->h264_h_loop_filter_chroma = ff_deblock_h_chroma_8_mmxext;
248  c->h264_h_loop_filter_chroma_intra = ff_deblock_h_chroma_intra_8_mmxext;
249  }
250 #if ARCH_X86_32 && HAVE_MMXEXT_EXTERNAL
251  c->h264_v_loop_filter_luma = ff_deblock_v_luma_8_mmxext;
252  c->h264_h_loop_filter_luma = ff_deblock_h_luma_8_mmxext;
253  c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_8_mmxext;
254  c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_8_mmxext;
255 #endif /* ARCH_X86_32 && HAVE_MMXEXT_EXTERNAL */
256  c->weight_h264_pixels_tab[0] = ff_h264_weight_16_mmxext;
257  c->weight_h264_pixels_tab[1] = ff_h264_weight_8_mmxext;
258  c->weight_h264_pixels_tab[2] = ff_h264_weight_4_mmxext;
259 
260  c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_mmxext;
261  c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_mmxext;
262  c->biweight_h264_pixels_tab[2] = ff_h264_biweight_4_mmxext;
263 
264  if (EXTERNAL_SSE2(mm_flags)) {
265  c->h264_idct8_add = ff_h264_idct8_add_8_sse2;
266 
267  c->h264_idct_add16 = ff_h264_idct_add16_8_sse2;
268  c->h264_idct8_add4 = ff_h264_idct8_add4_8_sse2;
269  if (chroma_format_idc == 1)
270  c->h264_idct_add8 = ff_h264_idct_add8_8_sse2;
271  c->h264_idct_add16intra = ff_h264_idct_add16intra_8_sse2;
272  c->h264_luma_dc_dequant_idct = ff_h264_luma_dc_dequant_idct_sse2;
273 
274  c->weight_h264_pixels_tab[0] = ff_h264_weight_16_sse2;
275  c->weight_h264_pixels_tab[1] = ff_h264_weight_8_sse2;
276 
277  c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_sse2;
278  c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_sse2;
279 
280  c->h264_v_loop_filter_luma = ff_deblock_v_luma_8_sse2;
281  c->h264_h_loop_filter_luma = ff_deblock_h_luma_8_sse2;
282  c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_8_sse2;
283  c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_8_sse2;
284  }
285  if (EXTERNAL_SSSE3(mm_flags)) {
286  c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_ssse3;
287  c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_ssse3;
288  }
289  if (EXTERNAL_AVX(mm_flags)) {
290  c->h264_v_loop_filter_luma = ff_deblock_v_luma_8_avx;
291  c->h264_h_loop_filter_luma = ff_deblock_h_luma_8_avx;
292  c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_8_avx;
293  c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_8_avx;
294  }
295  }
296  }
297  } else if (bit_depth == 10) {
298  if (EXTERNAL_MMX(mm_flags)) {
299  if (EXTERNAL_MMXEXT(mm_flags)) {
300 #if ARCH_X86_32
301  c->h264_v_loop_filter_chroma = ff_deblock_v_chroma_10_mmxext;
302  c->h264_v_loop_filter_chroma_intra = ff_deblock_v_chroma_intra_10_mmxext;
303  c->h264_v_loop_filter_luma = ff_deblock_v_luma_10_mmxext;
304  c->h264_h_loop_filter_luma = ff_deblock_h_luma_10_mmxext;
305  c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_10_mmxext;
306  c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_10_mmxext;
307 #endif /* ARCH_X86_32 */
308  c->h264_idct_dc_add = ff_h264_idct_dc_add_10_mmxext;
309  if (EXTERNAL_SSE2(mm_flags)) {
310  c->h264_idct_add = ff_h264_idct_add_10_sse2;
311  c->h264_idct8_dc_add = ff_h264_idct8_dc_add_10_sse2;
312 
313  c->h264_idct_add16 = ff_h264_idct_add16_10_sse2;
314  if (chroma_format_idc == 1)
315  c->h264_idct_add8 = ff_h264_idct_add8_10_sse2;
316  c->h264_idct_add16intra = ff_h264_idct_add16intra_10_sse2;
317 #if HAVE_ALIGNED_STACK
318  c->h264_idct8_add = ff_h264_idct8_add_10_sse2;
319  c->h264_idct8_add4 = ff_h264_idct8_add4_10_sse2;
320 #endif /* HAVE_ALIGNED_STACK */
321 
322  c->weight_h264_pixels_tab[0] = ff_h264_weight_16_10_sse2;
323  c->weight_h264_pixels_tab[1] = ff_h264_weight_8_10_sse2;
324  c->weight_h264_pixels_tab[2] = ff_h264_weight_4_10_sse2;
325 
326  c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_10_sse2;
327  c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_10_sse2;
328  c->biweight_h264_pixels_tab[2] = ff_h264_biweight_4_10_sse2;
329 
330  c->h264_v_loop_filter_chroma = ff_deblock_v_chroma_10_sse2;
331  c->h264_v_loop_filter_chroma_intra = ff_deblock_v_chroma_intra_10_sse2;
332 #if HAVE_ALIGNED_STACK
333  c->h264_v_loop_filter_luma = ff_deblock_v_luma_10_sse2;
334  c->h264_h_loop_filter_luma = ff_deblock_h_luma_10_sse2;
335  c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_10_sse2;
336  c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_10_sse2;
337 #endif /* HAVE_ALIGNED_STACK */
338  }
339  if (EXTERNAL_SSE4(mm_flags)) {
340  c->weight_h264_pixels_tab[0] = ff_h264_weight_16_10_sse4;
341  c->weight_h264_pixels_tab[1] = ff_h264_weight_8_10_sse4;
342  c->weight_h264_pixels_tab[2] = ff_h264_weight_4_10_sse4;
343 
344  c->biweight_h264_pixels_tab[0] = ff_h264_biweight_16_10_sse4;
345  c->biweight_h264_pixels_tab[1] = ff_h264_biweight_8_10_sse4;
346  c->biweight_h264_pixels_tab[2] = ff_h264_biweight_4_10_sse4;
347  }
348  if (EXTERNAL_AVX(mm_flags)) {
349  c->h264_idct_dc_add =
350  c->h264_idct_add = ff_h264_idct_add_10_avx;
351  c->h264_idct8_dc_add = ff_h264_idct8_dc_add_10_avx;
352 
353  c->h264_idct_add16 = ff_h264_idct_add16_10_avx;
354  if (chroma_format_idc == 1)
355  c->h264_idct_add8 = ff_h264_idct_add8_10_avx;
356  c->h264_idct_add16intra = ff_h264_idct_add16intra_10_avx;
357 #if HAVE_ALIGNED_STACK
358  c->h264_idct8_add = ff_h264_idct8_add_10_avx;
359  c->h264_idct8_add4 = ff_h264_idct8_add4_10_avx;
360 #endif /* HAVE_ALIGNED_STACK */
361 
362  c->h264_v_loop_filter_chroma = ff_deblock_v_chroma_10_avx;
363  c->h264_v_loop_filter_chroma_intra = ff_deblock_v_chroma_intra_10_avx;
364 #if HAVE_ALIGNED_STACK
365  c->h264_v_loop_filter_luma = ff_deblock_v_luma_10_avx;
366  c->h264_h_loop_filter_luma = ff_deblock_h_luma_10_avx;
367  c->h264_v_loop_filter_luma_intra = ff_deblock_v_luma_intra_10_avx;
368  c->h264_h_loop_filter_luma_intra = ff_deblock_h_luma_intra_10_avx;
369 #endif /* HAVE_ALIGNED_STACK */
370  }
371  }
372  }
373  }
374 #endif
375 }
LF_FUNCS
#define LF_FUNCS(type, depth)
Definition: h264dsp_init.c:106
EXTERNAL_MMX
#define EXTERNAL_MMX(flags)
Definition: x86/cpu.h:33
v
float v
Definition: avf_showspectrum.c:88
ref
FIXME Range Coding of cr are ref
Definition: snow.txt:367
ff_h264_luma_dc_dequant_idct_sse2
void ff_h264_luma_dc_dequant_idct_sse2(int16_t *output, int16_t *input, int qmul)
LF_FUNC
#define LF_FUNC(DIR, TYPE, DEPTH, OPT)
Definition: h264dsp_init.c:94
AV_CPU_FLAG_CMOV
#define AV_CPU_FLAG_CMOV
supports cmov instruction
Definition: cpu.h:47
stride
int stride
Definition: mace.c:144
h264dsp.h
H.264 DSP functions.
attributes.h
Macro definitions for various function/variable attributes.
EXTERNAL_SSE4
#define EXTERNAL_SSE4(flags)
Definition: x86/cpu.h:39
uint8_t
uint8_t
Definition: audio_convert.c:194
av_cold
#define av_cold
Definition: attributes.h:78
IDCT_ADD_REP_FUNC
#define IDCT_ADD_REP_FUNC(NUM, REP, DEPTH, OPT)
Definition: h264dsp_init.c:49
ff_h264_luma_dc_dequant_idct_mmx
void ff_h264_luma_dc_dequant_idct_mmx(int16_t *output, int16_t *input, int qmul)
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition: x86/cpu.h:36
alpha
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:86
ff_h264_loop_filter_strength_mmxext
void ff_h264_loop_filter_strength_mmxext(int16_t bS[2][4][4], uint8_t nnz[40], int8_t ref[2][40], int16_t mv[2][40][2], int bidir, int edges, int step, int mask_mv0, int mask_mv1, int field)
input
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an input
Definition: filter_design.txt:216
H264_BIWEIGHT_MMX_SSE
#define H264_BIWEIGHT_MMX_SSE(W)
Definition: h264dsp_init.c:173
H264_BIWEIGHT_10_SSE
#define H264_BIWEIGHT_10_SSE(W, DEPTH)
Definition: h264dsp_init.c:201
ff_h264dsp_init_x86
av_cold void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init.c:211
H264DSPContext
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
LF_IFUNC
#define LF_IFUNC(DIR, TYPE, DEPTH, OPT)
Definition: h264dsp_init.c:100
mv
static const int8_t mv[256][2]
Definition: libavcodec/4xm.c:73
dsputil_mmx.h
EXTERNAL_SSSE3
#define EXTERNAL_SSSE3(flags)
Definition: x86/cpu.h:38
IDCT_ADD_FUNC
#define IDCT_ADD_FUNC(NUM, DEPTH, OPT)
Definition: h264dsp_init.c:30
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:30
EXTERNAL_MMXEXT
#define EXTERNAL_MMXEXT(flags)
Definition: x86/cpu.h:34
c
static double c[64]
Definition: vsrc_mptestsrc.c:88
output
these buffered frames must be flushed immediately if a new input produces new output(Example:frame rate-doubling filter:filter_frame must(1) flush the second copy of the previous frame, if it is still there,(2) push the first copy of the incoming frame,(3) keep the second copy for later.) If the input frame is not enough to produce output
IDCT_ADD_REP_FUNC2
#define IDCT_ADD_REP_FUNC2(NUM, REP, DEPTH, OPT)
Definition: h264dsp_init.c:71
H264_BIWEIGHT_MMX
#define H264_BIWEIGHT_MMX(W)
Definition: h264dsp_init.c:169
EXTERNAL_AVX
#define EXTERNAL_AVX(flags)
Definition: x86/cpu.h:41
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:12
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