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mpegvideo.c
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1 /*
2  * Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
3  * h263, mpeg1, mpeg2 dequantizer & draw_edges by 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 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/x86/asm.h"
25 #include "libavutil/x86/cpu.h"
26 #include "libavcodec/avcodec.h"
27 #include "libavcodec/mpegvideo.h"
28 
29 #if HAVE_MMX_INLINE
30 
31 static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,
32  int16_t *block, int n, int qscale)
33 {
34  x86_reg level, qmul, qadd, nCoeffs;
35 
36  qmul = qscale << 1;
37 
38  av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
39 
40  if (!s->h263_aic) {
41  if (n < 4)
42  level = block[0] * s->y_dc_scale;
43  else
44  level = block[0] * s->c_dc_scale;
45  qadd = (qscale - 1) | 1;
46  }else{
47  qadd = 0;
48  level= block[0];
49  }
50  if(s->ac_pred)
51  nCoeffs=63;
52  else
53  nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
54 
55 __asm__ volatile(
56  "movd %1, %%mm6 \n\t" //qmul
57  "packssdw %%mm6, %%mm6 \n\t"
58  "packssdw %%mm6, %%mm6 \n\t"
59  "movd %2, %%mm5 \n\t" //qadd
60  "pxor %%mm7, %%mm7 \n\t"
61  "packssdw %%mm5, %%mm5 \n\t"
62  "packssdw %%mm5, %%mm5 \n\t"
63  "psubw %%mm5, %%mm7 \n\t"
64  "pxor %%mm4, %%mm4 \n\t"
65  ".p2align 4 \n\t"
66  "1: \n\t"
67  "movq (%0, %3), %%mm0 \n\t"
68  "movq 8(%0, %3), %%mm1 \n\t"
69 
70  "pmullw %%mm6, %%mm0 \n\t"
71  "pmullw %%mm6, %%mm1 \n\t"
72 
73  "movq (%0, %3), %%mm2 \n\t"
74  "movq 8(%0, %3), %%mm3 \n\t"
75 
76  "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
77  "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
78 
79  "pxor %%mm2, %%mm0 \n\t"
80  "pxor %%mm3, %%mm1 \n\t"
81 
82  "paddw %%mm7, %%mm0 \n\t"
83  "paddw %%mm7, %%mm1 \n\t"
84 
85  "pxor %%mm0, %%mm2 \n\t"
86  "pxor %%mm1, %%mm3 \n\t"
87 
88  "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
89  "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
90 
91  "pandn %%mm2, %%mm0 \n\t"
92  "pandn %%mm3, %%mm1 \n\t"
93 
94  "movq %%mm0, (%0, %3) \n\t"
95  "movq %%mm1, 8(%0, %3) \n\t"
96 
97  "add $16, %3 \n\t"
98  "jng 1b \n\t"
99  ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
100  : "memory"
101  );
102  block[0]= level;
103 }
104 
105 
106 static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,
107  int16_t *block, int n, int qscale)
108 {
109  x86_reg qmul, qadd, nCoeffs;
110 
111  qmul = qscale << 1;
112  qadd = (qscale - 1) | 1;
113 
114  av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
115 
116  nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
117 
118 __asm__ volatile(
119  "movd %1, %%mm6 \n\t" //qmul
120  "packssdw %%mm6, %%mm6 \n\t"
121  "packssdw %%mm6, %%mm6 \n\t"
122  "movd %2, %%mm5 \n\t" //qadd
123  "pxor %%mm7, %%mm7 \n\t"
124  "packssdw %%mm5, %%mm5 \n\t"
125  "packssdw %%mm5, %%mm5 \n\t"
126  "psubw %%mm5, %%mm7 \n\t"
127  "pxor %%mm4, %%mm4 \n\t"
128  ".p2align 4 \n\t"
129  "1: \n\t"
130  "movq (%0, %3), %%mm0 \n\t"
131  "movq 8(%0, %3), %%mm1 \n\t"
132 
133  "pmullw %%mm6, %%mm0 \n\t"
134  "pmullw %%mm6, %%mm1 \n\t"
135 
136  "movq (%0, %3), %%mm2 \n\t"
137  "movq 8(%0, %3), %%mm3 \n\t"
138 
139  "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
140  "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
141 
142  "pxor %%mm2, %%mm0 \n\t"
143  "pxor %%mm3, %%mm1 \n\t"
144 
145  "paddw %%mm7, %%mm0 \n\t"
146  "paddw %%mm7, %%mm1 \n\t"
147 
148  "pxor %%mm0, %%mm2 \n\t"
149  "pxor %%mm1, %%mm3 \n\t"
150 
151  "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
152  "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
153 
154  "pandn %%mm2, %%mm0 \n\t"
155  "pandn %%mm3, %%mm1 \n\t"
156 
157  "movq %%mm0, (%0, %3) \n\t"
158  "movq %%mm1, 8(%0, %3) \n\t"
159 
160  "add $16, %3 \n\t"
161  "jng 1b \n\t"
162  ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
163  : "memory"
164  );
165 }
166 
167 static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
168  int16_t *block, int n, int qscale)
169 {
170  x86_reg nCoeffs;
171  const uint16_t *quant_matrix;
172  int block0;
173 
174  av_assert2(s->block_last_index[n]>=0);
175 
176  nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
177 
178  if (n < 4)
179  block0 = block[0] * s->y_dc_scale;
180  else
181  block0 = block[0] * s->c_dc_scale;
182  /* XXX: only mpeg1 */
183  quant_matrix = s->intra_matrix;
184 __asm__ volatile(
185  "pcmpeqw %%mm7, %%mm7 \n\t"
186  "psrlw $15, %%mm7 \n\t"
187  "movd %2, %%mm6 \n\t"
188  "packssdw %%mm6, %%mm6 \n\t"
189  "packssdw %%mm6, %%mm6 \n\t"
190  "mov %3, %%"REG_a" \n\t"
191  ".p2align 4 \n\t"
192  "1: \n\t"
193  "movq (%0, %%"REG_a"), %%mm0 \n\t"
194  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
195  "movq (%1, %%"REG_a"), %%mm4 \n\t"
196  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
197  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
198  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
199  "pxor %%mm2, %%mm2 \n\t"
200  "pxor %%mm3, %%mm3 \n\t"
201  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
202  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
203  "pxor %%mm2, %%mm0 \n\t"
204  "pxor %%mm3, %%mm1 \n\t"
205  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
206  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
207  "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
208  "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
209  "pxor %%mm4, %%mm4 \n\t"
210  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
211  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
212  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
213  "psraw $3, %%mm0 \n\t"
214  "psraw $3, %%mm1 \n\t"
215  "psubw %%mm7, %%mm0 \n\t"
216  "psubw %%mm7, %%mm1 \n\t"
217  "por %%mm7, %%mm0 \n\t"
218  "por %%mm7, %%mm1 \n\t"
219  "pxor %%mm2, %%mm0 \n\t"
220  "pxor %%mm3, %%mm1 \n\t"
221  "psubw %%mm2, %%mm0 \n\t"
222  "psubw %%mm3, %%mm1 \n\t"
223  "pandn %%mm0, %%mm4 \n\t"
224  "pandn %%mm1, %%mm5 \n\t"
225  "movq %%mm4, (%0, %%"REG_a") \n\t"
226  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
227 
228  "add $16, %%"REG_a" \n\t"
229  "js 1b \n\t"
230  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
231  : "%"REG_a, "memory"
232  );
233  block[0]= block0;
234 }
235 
236 static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
237  int16_t *block, int n, int qscale)
238 {
239  x86_reg nCoeffs;
240  const uint16_t *quant_matrix;
241 
242  av_assert2(s->block_last_index[n]>=0);
243 
244  nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
245 
246  quant_matrix = s->inter_matrix;
247 __asm__ volatile(
248  "pcmpeqw %%mm7, %%mm7 \n\t"
249  "psrlw $15, %%mm7 \n\t"
250  "movd %2, %%mm6 \n\t"
251  "packssdw %%mm6, %%mm6 \n\t"
252  "packssdw %%mm6, %%mm6 \n\t"
253  "mov %3, %%"REG_a" \n\t"
254  ".p2align 4 \n\t"
255  "1: \n\t"
256  "movq (%0, %%"REG_a"), %%mm0 \n\t"
257  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
258  "movq (%1, %%"REG_a"), %%mm4 \n\t"
259  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
260  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
261  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
262  "pxor %%mm2, %%mm2 \n\t"
263  "pxor %%mm3, %%mm3 \n\t"
264  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
265  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
266  "pxor %%mm2, %%mm0 \n\t"
267  "pxor %%mm3, %%mm1 \n\t"
268  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
269  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
270  "paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
271  "paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
272  "paddw %%mm7, %%mm0 \n\t" // abs(block[i])*2 + 1
273  "paddw %%mm7, %%mm1 \n\t" // abs(block[i])*2 + 1
274  "pmullw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
275  "pmullw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
276  "pxor %%mm4, %%mm4 \n\t"
277  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
278  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
279  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
280  "psraw $4, %%mm0 \n\t"
281  "psraw $4, %%mm1 \n\t"
282  "psubw %%mm7, %%mm0 \n\t"
283  "psubw %%mm7, %%mm1 \n\t"
284  "por %%mm7, %%mm0 \n\t"
285  "por %%mm7, %%mm1 \n\t"
286  "pxor %%mm2, %%mm0 \n\t"
287  "pxor %%mm3, %%mm1 \n\t"
288  "psubw %%mm2, %%mm0 \n\t"
289  "psubw %%mm3, %%mm1 \n\t"
290  "pandn %%mm0, %%mm4 \n\t"
291  "pandn %%mm1, %%mm5 \n\t"
292  "movq %%mm4, (%0, %%"REG_a") \n\t"
293  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
294 
295  "add $16, %%"REG_a" \n\t"
296  "js 1b \n\t"
297  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
298  : "%"REG_a, "memory"
299  );
300 }
301 
302 static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
303  int16_t *block, int n, int qscale)
304 {
305  x86_reg nCoeffs;
306  const uint16_t *quant_matrix;
307  int block0;
308 
309  av_assert2(s->block_last_index[n]>=0);
310 
311  if(s->alternate_scan) nCoeffs= 63; //FIXME
312  else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
313 
314  if (n < 4)
315  block0 = block[0] * s->y_dc_scale;
316  else
317  block0 = block[0] * s->c_dc_scale;
318  quant_matrix = s->intra_matrix;
319 __asm__ volatile(
320  "pcmpeqw %%mm7, %%mm7 \n\t"
321  "psrlw $15, %%mm7 \n\t"
322  "movd %2, %%mm6 \n\t"
323  "packssdw %%mm6, %%mm6 \n\t"
324  "packssdw %%mm6, %%mm6 \n\t"
325  "mov %3, %%"REG_a" \n\t"
326  ".p2align 4 \n\t"
327  "1: \n\t"
328  "movq (%0, %%"REG_a"), %%mm0 \n\t"
329  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
330  "movq (%1, %%"REG_a"), %%mm4 \n\t"
331  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
332  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
333  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
334  "pxor %%mm2, %%mm2 \n\t"
335  "pxor %%mm3, %%mm3 \n\t"
336  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
337  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
338  "pxor %%mm2, %%mm0 \n\t"
339  "pxor %%mm3, %%mm1 \n\t"
340  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
341  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
342  "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
343  "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
344  "pxor %%mm4, %%mm4 \n\t"
345  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
346  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
347  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
348  "psraw $3, %%mm0 \n\t"
349  "psraw $3, %%mm1 \n\t"
350  "pxor %%mm2, %%mm0 \n\t"
351  "pxor %%mm3, %%mm1 \n\t"
352  "psubw %%mm2, %%mm0 \n\t"
353  "psubw %%mm3, %%mm1 \n\t"
354  "pandn %%mm0, %%mm4 \n\t"
355  "pandn %%mm1, %%mm5 \n\t"
356  "movq %%mm4, (%0, %%"REG_a") \n\t"
357  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
358 
359  "add $16, %%"REG_a" \n\t"
360  "jng 1b \n\t"
361  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
362  : "%"REG_a, "memory"
363  );
364  block[0]= block0;
365  //Note, we do not do mismatch control for intra as errors cannot accumulate
366 }
367 
368 static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
369  int16_t *block, int n, int qscale)
370 {
371  x86_reg nCoeffs;
372  const uint16_t *quant_matrix;
373 
374  av_assert2(s->block_last_index[n]>=0);
375 
376  if(s->alternate_scan) nCoeffs= 63; //FIXME
377  else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
378 
379  quant_matrix = s->inter_matrix;
380 __asm__ volatile(
381  "pcmpeqw %%mm7, %%mm7 \n\t"
382  "psrlq $48, %%mm7 \n\t"
383  "movd %2, %%mm6 \n\t"
384  "packssdw %%mm6, %%mm6 \n\t"
385  "packssdw %%mm6, %%mm6 \n\t"
386  "mov %3, %%"REG_a" \n\t"
387  ".p2align 4 \n\t"
388  "1: \n\t"
389  "movq (%0, %%"REG_a"), %%mm0 \n\t"
390  "movq 8(%0, %%"REG_a"), %%mm1 \n\t"
391  "movq (%1, %%"REG_a"), %%mm4 \n\t"
392  "movq 8(%1, %%"REG_a"), %%mm5 \n\t"
393  "pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
394  "pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
395  "pxor %%mm2, %%mm2 \n\t"
396  "pxor %%mm3, %%mm3 \n\t"
397  "pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
398  "pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
399  "pxor %%mm2, %%mm0 \n\t"
400  "pxor %%mm3, %%mm1 \n\t"
401  "psubw %%mm2, %%mm0 \n\t" // abs(block[i])
402  "psubw %%mm3, %%mm1 \n\t" // abs(block[i])
403  "paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
404  "paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
405  "pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*2*q
406  "pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*2*q
407  "paddw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
408  "paddw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
409  "pxor %%mm4, %%mm4 \n\t"
410  "pxor %%mm5, %%mm5 \n\t" // FIXME slow
411  "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
412  "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
413  "psrlw $4, %%mm0 \n\t"
414  "psrlw $4, %%mm1 \n\t"
415  "pxor %%mm2, %%mm0 \n\t"
416  "pxor %%mm3, %%mm1 \n\t"
417  "psubw %%mm2, %%mm0 \n\t"
418  "psubw %%mm3, %%mm1 \n\t"
419  "pandn %%mm0, %%mm4 \n\t"
420  "pandn %%mm1, %%mm5 \n\t"
421  "pxor %%mm4, %%mm7 \n\t"
422  "pxor %%mm5, %%mm7 \n\t"
423  "movq %%mm4, (%0, %%"REG_a") \n\t"
424  "movq %%mm5, 8(%0, %%"REG_a") \n\t"
425 
426  "add $16, %%"REG_a" \n\t"
427  "jng 1b \n\t"
428  "movd 124(%0, %3), %%mm0 \n\t"
429  "movq %%mm7, %%mm6 \n\t"
430  "psrlq $32, %%mm7 \n\t"
431  "pxor %%mm6, %%mm7 \n\t"
432  "movq %%mm7, %%mm6 \n\t"
433  "psrlq $16, %%mm7 \n\t"
434  "pxor %%mm6, %%mm7 \n\t"
435  "pslld $31, %%mm7 \n\t"
436  "psrlq $15, %%mm7 \n\t"
437  "pxor %%mm7, %%mm0 \n\t"
438  "movd %%mm0, 124(%0, %3) \n\t"
439 
440  ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
441  : "%"REG_a, "memory"
442  );
443 }
444 
445 #endif /* HAVE_MMX_INLINE */
446 
447 av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
448 {
449 #if HAVE_MMX_INLINE
450  int cpu_flags = av_get_cpu_flags();
451 
452  if (INLINE_MMX(cpu_flags)) {
453  s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
454  s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
455  s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
456  s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
457  if (!(s->avctx->flags & CODEC_FLAG_BITEXACT))
458  s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
459  s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
460  }
461 #endif /* HAVE_MMX_INLINE */
462 }
s
const char * s
Definition: avisynth_c.h:631
ScanTable::raster_end
uint8_t raster_end[64]
Definition: idctdsp.h:32
mpegvideo.h
mpegvideo header.
MpegEncContext::h263_aic
int h263_aic
Advanded INTRA Coding (AIC)
Definition: mpegvideo.h:156
MpegEncContext::dct_unquantize_h263_intra
void(* dct_unquantize_h263_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:574
attributes.h
Macro definitions for various function/variable attributes.
MpegEncContext::dct_unquantize_h263_inter
void(* dct_unquantize_h263_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:576
av_cold
#define av_cold
Definition: attributes.h:74
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
CODEC_FLAG_BITEXACT
#define CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:759
INLINE_MMX
#define INLINE_MMX(flags)
Definition: cpu.h:75
MpegEncContext::dct_unquantize_mpeg2_inter
void(* dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:572
MpegEncContext::dct_unquantize_mpeg1_intra
void(* dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:566
AVCodecContext::flags
int flags
CODEC_FLAG_*.
Definition: avcodec.h:1335
avcodec.h
Libavcodec external API header.
ff_mpv_common_init_x86
av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
Definition: mpegvideo.c:447
MpegEncContext::alternate_scan
int alternate_scan
Definition: mpegvideo.h:529
MpegEncContext::block_last_index
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:155
n
int n
Definition: avisynth_c.h:547
MpegEncContext::inter_matrix
uint16_t inter_matrix[64]
Definition: mpegvideo.h:369
MpegEncContext::intra_scantable
ScanTable intra_scantable
Definition: mpegvideo.h:160
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
level
uint8_t level
Definition: svq3.c:150
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:150
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:167
MpegEncContext::dct_unquantize_mpeg1_inter
void(* dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:568
x86_reg
int x86_reg
Definition: asm.h:71
MpegEncContext::dct_unquantize_mpeg2_intra
void(* dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, int16_t *block, int n, int qscale)
Definition: mpegvideo.h:570
MpegEncContext::intra_matrix
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:367
MpegEncContext::inter_scantable
ScanTable inter_scantable
if inter == intra then intra should be used to reduce tha cache usage
Definition: mpegvideo.h:159
block
static int16_t block[64]
Definition: dct-test.c:110
Generated on Wed Jun 10 2015 01:56:46 for FFmpeg by   doxygen 1.8.6