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/*
2
 * Copyright (c) 2000,2001 Fabrice Bellard
3
 * Copyright (c) 2002-2004 Michael Niedermayer 
4
 *
5
 * 4MV & hq & B-frame encoding stuff by Michael Niedermayer 
6
 *
7
 * This file is part of FFmpeg.
8
 *
9
 * FFmpeg is free software; you can redistribute it and/or
10
 * modify it under the terms of the GNU Lesser General Public
11
 * License as published by the Free Software Foundation; either
12
 * version 2.1 of the License, or (at your option) any later version.
13
 *
14
 * FFmpeg is distributed in the hope that it will be useful,
15
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17
 * Lesser General Public License for more details.
18
 *
19
 * You should have received a copy of the GNU Lesser General Public
20
 * License along with FFmpeg; if not, write to the Free Software
21
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22
 */
23
 
24
#include 
25
 
26
#include "libavutil/avassert.h"
27
#include "libavutil/internal.h"
28
#include "avcodec.h"
29
#include "dsputil.h"
30
#include "h261.h"
31
#include "mpegvideo.h"
32
#include "mjpegenc.h"
33
#include "msmpeg4.h"
34
#include 
35
 
36
static void gmc1_motion(MpegEncContext *s,
37
                        uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
38
                        uint8_t **ref_picture)
39
{
40
    uint8_t *ptr;
41
    int src_x, src_y, motion_x, motion_y;
42
    ptrdiff_t offset, linesize, uvlinesize;
43
    int emu = 0;
44
 
45
    motion_x   = s->sprite_offset[0][0];
46
    motion_y   = s->sprite_offset[0][1];
47
    src_x      = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy + 1));
48
    src_y      = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy + 1));
49
    motion_x <<= (3 - s->sprite_warping_accuracy);
50
    motion_y <<= (3 - s->sprite_warping_accuracy);
51
    src_x      = av_clip(src_x, -16, s->width);
52
    if (src_x == s->width)
53
        motion_x = 0;
54
    src_y = av_clip(src_y, -16, s->height);
55
    if (src_y == s->height)
56
        motion_y = 0;
57
 
58
    linesize   = s->linesize;
59
    uvlinesize = s->uvlinesize;
60
 
61
    ptr = ref_picture[0] + src_y * linesize + src_x;
62
 
63
        if ((unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0) ||
64
            (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)) {
65
            s->vdsp.emulated_edge_mc(s->edge_emu_buffer, linesize, ptr,
66
                                     linesize,
67
                                     17, 17,
68
                                     src_x, src_y,
69
                                     s->h_edge_pos, s->v_edge_pos);
70
            ptr = s->edge_emu_buffer;
71
        }
72
 
73
    if ((motion_x | motion_y) & 7) {
74
        s->dsp.gmc1(dest_y, ptr, linesize, 16,
75
                    motion_x & 15, motion_y & 15, 128 - s->no_rounding);
76
        s->dsp.gmc1(dest_y + 8, ptr + 8, linesize, 16,
77
                    motion_x & 15, motion_y & 15, 128 - s->no_rounding);
78
    } else {
79
        int dxy;
80
 
81
        dxy = ((motion_x >> 3) & 1) | ((motion_y >> 2) & 2);
82
        if (s->no_rounding) {
83
            s->hdsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
84
        } else {
85
            s->hdsp.put_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
86
        }
87
    }
88
 
89
    if (CONFIG_GRAY && s->flags & CODEC_FLAG_GRAY)
90
        return;
91
 
92
    motion_x   = s->sprite_offset[1][0];
93
    motion_y   = s->sprite_offset[1][1];
94
    src_x      = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy + 1));
95
    src_y      = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy + 1));
96
    motion_x <<= (3 - s->sprite_warping_accuracy);
97
    motion_y <<= (3 - s->sprite_warping_accuracy);
98
    src_x      = av_clip(src_x, -8, s->width >> 1);
99
    if (src_x == s->width >> 1)
100
        motion_x = 0;
101
    src_y = av_clip(src_y, -8, s->height >> 1);
102
    if (src_y == s->height >> 1)
103
        motion_y = 0;
104
 
105
    offset = (src_y * uvlinesize) + src_x;
106
    ptr    = ref_picture[1] + offset;
107
        if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - 9, 0) ||
108
            (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - 9, 0)) {
109
            s->vdsp.emulated_edge_mc(s->edge_emu_buffer, uvlinesize,
110
                                     ptr, uvlinesize,
111
                                     9, 9,
112
                                     src_x, src_y,
113
                                     s->h_edge_pos >> 1, s->v_edge_pos >> 1);
114
            ptr = s->edge_emu_buffer;
115
            emu = 1;
116
        }
117
    s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8,
118
                motion_x & 15, motion_y & 15, 128 - s->no_rounding);
119
 
120
    ptr = ref_picture[2] + offset;
121
    if (emu) {
122
        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, uvlinesize,
123
                                 ptr, uvlinesize,
124
                                 9, 9,
125
                                 src_x, src_y,
126
                                 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
127
        ptr = s->edge_emu_buffer;
128
    }
129
    s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8,
130
                motion_x & 15, motion_y & 15, 128 - s->no_rounding);
131
}
132
 
133
static void gmc_motion(MpegEncContext *s,
134
                       uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
135
                       uint8_t **ref_picture)
136
{
137
    uint8_t *ptr;
138
    int linesize, uvlinesize;
139
    const int a = s->sprite_warping_accuracy;
140
    int ox, oy;
141
 
142
    linesize   = s->linesize;
143
    uvlinesize = s->uvlinesize;
144
 
145
    ptr = ref_picture[0];
146
 
147
    ox = s->sprite_offset[0][0] + s->sprite_delta[0][0] * s->mb_x * 16 +
148
         s->sprite_delta[0][1] * s->mb_y * 16;
149
    oy = s->sprite_offset[0][1] + s->sprite_delta[1][0] * s->mb_x * 16 +
150
         s->sprite_delta[1][1] * s->mb_y * 16;
151
 
152
    s->dsp.gmc(dest_y, ptr, linesize, 16,
153
               ox, oy,
154
               s->sprite_delta[0][0], s->sprite_delta[0][1],
155
               s->sprite_delta[1][0], s->sprite_delta[1][1],
156
               a + 1, (1 << (2 * a + 1)) - s->no_rounding,
157
               s->h_edge_pos, s->v_edge_pos);
158
    s->dsp.gmc(dest_y + 8, ptr, linesize, 16,
159
               ox + s->sprite_delta[0][0] * 8,
160
               oy + s->sprite_delta[1][0] * 8,
161
               s->sprite_delta[0][0], s->sprite_delta[0][1],
162
               s->sprite_delta[1][0], s->sprite_delta[1][1],
163
               a + 1, (1 << (2 * a + 1)) - s->no_rounding,
164
               s->h_edge_pos, s->v_edge_pos);
165
 
166
    if (CONFIG_GRAY && s->flags & CODEC_FLAG_GRAY)
167
        return;
168
 
169
    ox = s->sprite_offset[1][0] + s->sprite_delta[0][0] * s->mb_x * 8 +
170
         s->sprite_delta[0][1] * s->mb_y * 8;
171
    oy = s->sprite_offset[1][1] + s->sprite_delta[1][0] * s->mb_x * 8 +
172
         s->sprite_delta[1][1] * s->mb_y * 8;
173
 
174
    ptr = ref_picture[1];
175
    s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
176
               ox, oy,
177
               s->sprite_delta[0][0], s->sprite_delta[0][1],
178
               s->sprite_delta[1][0], s->sprite_delta[1][1],
179
               a + 1, (1 << (2 * a + 1)) - s->no_rounding,
180
               s->h_edge_pos >> 1, s->v_edge_pos >> 1);
181
 
182
    ptr = ref_picture[2];
183
    s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
184
               ox, oy,
185
               s->sprite_delta[0][0], s->sprite_delta[0][1],
186
               s->sprite_delta[1][0], s->sprite_delta[1][1],
187
               a + 1, (1 << (2 * a + 1)) - s->no_rounding,
188
               s->h_edge_pos >> 1, s->v_edge_pos >> 1);
189
}
190
 
191
static inline int hpel_motion(MpegEncContext *s,
192
                              uint8_t *dest, uint8_t *src,
193
                              int src_x, int src_y,
194
                              op_pixels_func *pix_op,
195
                              int motion_x, int motion_y)
196
{
197
    int dxy = 0;
198
    int emu = 0;
199
 
200
    src_x += motion_x >> 1;
201
    src_y += motion_y >> 1;
202
 
203
    /* WARNING: do no forget half pels */
204
    src_x = av_clip(src_x, -16, s->width); // FIXME unneeded for emu?
205
    if (src_x != s->width)
206
        dxy |= motion_x & 1;
207
    src_y = av_clip(src_y, -16, s->height);
208
    if (src_y != s->height)
209
        dxy |= (motion_y & 1) << 1;
210
    src += src_y * s->linesize + src_x;
211
 
212
    if (s->unrestricted_mv && (s->flags & CODEC_FLAG_EMU_EDGE)) {
213
        if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 8, 0) ||
214
            (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 1) - 8, 0)) {
215
            s->vdsp.emulated_edge_mc(s->edge_emu_buffer, s->linesize, src,
216
                                     s->linesize,
217
                                     9, 9,
218
                                     src_x, src_y,
219
                                     s->h_edge_pos, s->v_edge_pos);
220
            src = s->edge_emu_buffer;
221
            emu = 1;
222
        }
223
    }
224
    pix_op[dxy](dest, src, s->linesize, 8);
225
    return emu;
226
}
227
 
228
static av_always_inline
229
void mpeg_motion_internal(MpegEncContext *s,
230
                          uint8_t *dest_y,
231
                          uint8_t *dest_cb,
232
                          uint8_t *dest_cr,
233
                          int field_based,
234
                          int bottom_field,
235
                          int field_select,
236
                          uint8_t **ref_picture,
237
                          op_pixels_func (*pix_op)[4],
238
                          int motion_x,
239
                          int motion_y,
240
                          int h,
241
                          int is_mpeg12,
242
                          int mb_y)
243
{
244
    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
245
    int dxy, uvdxy, mx, my, src_x, src_y,
246
        uvsrc_x, uvsrc_y, v_edge_pos;
247
    ptrdiff_t uvlinesize, linesize;
248
 
249
#if 0
250
    if (s->quarter_sample) {
251
        motion_x >>= 1;
252
        motion_y >>= 1;
253
    }
254
#endif
255
 
256
    v_edge_pos = s->v_edge_pos >> field_based;
257
    linesize   = s->current_picture.f.linesize[0] << field_based;
258
    uvlinesize = s->current_picture.f.linesize[1] << field_based;
259
 
260
    dxy   = ((motion_y & 1) << 1) | (motion_x & 1);
261
    src_x = s->mb_x * 16 + (motion_x >> 1);
262
    src_y = (mb_y << (4 - field_based)) + (motion_y >> 1);
263
 
264
    if (!is_mpeg12 && s->out_format == FMT_H263) {
265
        if ((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based) {
266
            mx      = (motion_x >> 1) | (motion_x & 1);
267
            my      = motion_y >> 1;
268
            uvdxy   = ((my & 1) << 1) | (mx & 1);
269
            uvsrc_x = s->mb_x * 8 + (mx >> 1);
270
            uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);
271
        } else {
272
            uvdxy   = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
273
            uvsrc_x = src_x >> 1;
274
            uvsrc_y = src_y >> 1;
275
        }
276
    // Even chroma mv's are full pel in H261
277
    } else if (!is_mpeg12 && s->out_format == FMT_H261) {
278
        mx      = motion_x / 4;
279
        my      = motion_y / 4;
280
        uvdxy   = 0;
281
        uvsrc_x = s->mb_x * 8 + mx;
282
        uvsrc_y = mb_y * 8 + my;
283
    } else {
284
        if (s->chroma_y_shift) {
285
            mx      = motion_x / 2;
286
            my      = motion_y / 2;
287
            uvdxy   = ((my & 1) << 1) | (mx & 1);
288
            uvsrc_x = s->mb_x * 8 + (mx >> 1);
289
            uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);
290
        } else {
291
            if (s->chroma_x_shift) {
292
                // Chroma422
293
                mx      = motion_x / 2;
294
                uvdxy   = ((motion_y & 1) << 1) | (mx & 1);
295
                uvsrc_x = s->mb_x * 8 + (mx >> 1);
296
                uvsrc_y = src_y;
297
            } else {
298
                // Chroma444
299
                uvdxy   = dxy;
300
                uvsrc_x = src_x;
301
                uvsrc_y = src_y;
302
            }
303
        }
304
    }
305
 
306
    ptr_y  = ref_picture[0] + src_y * linesize + src_x;
307
    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
308
    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
309
 
310
    if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 16, 0) ||
311
        (unsigned)src_y > FFMAX(   v_edge_pos - (motion_y & 1) - h , 0)) {
312
        if (is_mpeg12 ||
313
            s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
314
            s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
315
            av_log(s->avctx, AV_LOG_DEBUG,
316
                   "MPEG motion vector out of boundary (%d %d)\n", src_x,
317
                   src_y);
318
            return;
319
        }
320
        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, s->linesize, ptr_y,
321
                                 s->linesize,
322
                                 17, 17 + field_based,
323
                                 src_x, src_y << field_based,
324
                                 s->h_edge_pos, s->v_edge_pos);
325
        ptr_y = s->edge_emu_buffer;
326
        if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
327
            uint8_t *uvbuf = s->edge_emu_buffer + 18 * s->linesize;
328
            s->vdsp.emulated_edge_mc(uvbuf, s->uvlinesize, ptr_cb,
329
                                     s->uvlinesize,
330
                                     9, 9 + field_based,
331
                                     uvsrc_x, uvsrc_y << field_based,
332
                                     s->h_edge_pos >> 1, s->v_edge_pos >> 1);
333
            s->vdsp.emulated_edge_mc(uvbuf + 16, s->uvlinesize, ptr_cr,
334
                                     s->uvlinesize,
335
                                     9, 9 + field_based,
336
                                     uvsrc_x, uvsrc_y << field_based,
337
                                     s->h_edge_pos >> 1, s->v_edge_pos >> 1);
338
            ptr_cb = uvbuf;
339
            ptr_cr = uvbuf + 16;
340
        }
341
    }
342
 
343
    /* FIXME use this for field pix too instead of the obnoxious hack which
344
     * changes picture.data */
345
    if (bottom_field) {
346
        dest_y  += s->linesize;
347
        dest_cb += s->uvlinesize;
348
        dest_cr += s->uvlinesize;
349
    }
350
 
351
    if (field_select) {
352
        ptr_y  += s->linesize;
353
        ptr_cb += s->uvlinesize;
354
        ptr_cr += s->uvlinesize;
355
    }
356
 
357
    pix_op[0][dxy](dest_y, ptr_y, linesize, h);
358
 
359
    if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
360
        pix_op[s->chroma_x_shift][uvdxy]
361
            (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
362
        pix_op[s->chroma_x_shift][uvdxy]
363
            (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
364
    }
365
    if (!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
366
        s->out_format == FMT_H261) {
367
        ff_h261_loop_filter(s);
368
    }
369
}
370
/* apply one mpeg motion vector to the three components */
371
static void mpeg_motion(MpegEncContext *s,
372
                        uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
373
                        int field_select, uint8_t **ref_picture,
374
                        op_pixels_func (*pix_op)[4],
375
                        int motion_x, int motion_y, int h, int mb_y)
376
{
377
#if !CONFIG_SMALL
378
    if (s->out_format == FMT_MPEG1)
379
        mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
380
                             field_select, ref_picture, pix_op,
381
                             motion_x, motion_y, h, 1, mb_y);
382
    else
383
#endif
384
        mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
385
                             field_select, ref_picture, pix_op,
386
                             motion_x, motion_y, h, 0, mb_y);
387
}
388
 
389
static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y,
390
                              uint8_t *dest_cb, uint8_t *dest_cr,
391
                              int bottom_field, int field_select,
392
                              uint8_t **ref_picture,
393
                              op_pixels_func (*pix_op)[4],
394
                              int motion_x, int motion_y, int h, int mb_y)
395
{
396
#if !CONFIG_SMALL
397
    if (s->out_format == FMT_MPEG1)
398
        mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
399
                             bottom_field, field_select, ref_picture, pix_op,
400
                             motion_x, motion_y, h, 1, mb_y);
401
    else
402
#endif
403
        mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
404
                             bottom_field, field_select, ref_picture, pix_op,
405
                             motion_x, motion_y, h, 0, mb_y);
406
}
407
 
408
// FIXME move to dsputil, avg variant, 16x16 version
409
static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride)
410
{
411
    int x;
412
    uint8_t *const top    = src[1];
413
    uint8_t *const left   = src[2];
414
    uint8_t *const mid    = src[0];
415
    uint8_t *const right  = src[3];
416
    uint8_t *const bottom = src[4];
417
#define OBMC_FILTER(x, t, l, m, r, b)\
418
    dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
419
#define OBMC_FILTER4(x, t, l, m, r, b)\
420
    OBMC_FILTER(x         , t, l, m, r, b);\
421
    OBMC_FILTER(x+1       , t, l, m, r, b);\
422
    OBMC_FILTER(x  +stride, t, l, m, r, b);\
423
    OBMC_FILTER(x+1+stride, t, l, m, r, b);
424
 
425
    x = 0;
426
    OBMC_FILTER (x    , 2, 2, 4, 0, 0);
427
    OBMC_FILTER (x + 1, 2, 1, 5, 0, 0);
428
    OBMC_FILTER4(x + 2, 2, 1, 5, 0, 0);
429
    OBMC_FILTER4(x + 4, 2, 0, 5, 1, 0);
430
    OBMC_FILTER (x + 6, 2, 0, 5, 1, 0);
431
    OBMC_FILTER (x + 7, 2, 0, 4, 2, 0);
432
    x += stride;
433
    OBMC_FILTER (x    , 1, 2, 5, 0, 0);
434
    OBMC_FILTER (x + 1, 1, 2, 5, 0, 0);
435
    OBMC_FILTER (x + 6, 1, 0, 5, 2, 0);
436
    OBMC_FILTER (x + 7, 1, 0, 5, 2, 0);
437
    x += stride;
438
    OBMC_FILTER4(x    , 1, 2, 5, 0, 0);
439
    OBMC_FILTER4(x + 2, 1, 1, 6, 0, 0);
440
    OBMC_FILTER4(x + 4, 1, 0, 6, 1, 0);
441
    OBMC_FILTER4(x + 6, 1, 0, 5, 2, 0);
442
    x += 2 * stride;
443
    OBMC_FILTER4(x    , 0, 2, 5, 0, 1);
444
    OBMC_FILTER4(x + 2, 0, 1, 6, 0, 1);
445
    OBMC_FILTER4(x + 4, 0, 0, 6, 1, 1);
446
    OBMC_FILTER4(x + 6, 0, 0, 5, 2, 1);
447
    x += 2*stride;
448
    OBMC_FILTER (x    , 0, 2, 5, 0, 1);
449
    OBMC_FILTER (x + 1, 0, 2, 5, 0, 1);
450
    OBMC_FILTER4(x + 2, 0, 1, 5, 0, 2);
451
    OBMC_FILTER4(x + 4, 0, 0, 5, 1, 2);
452
    OBMC_FILTER (x + 6, 0, 0, 5, 2, 1);
453
    OBMC_FILTER (x + 7, 0, 0, 5, 2, 1);
454
    x += stride;
455
    OBMC_FILTER (x    , 0, 2, 4, 0, 2);
456
    OBMC_FILTER (x + 1, 0, 1, 5, 0, 2);
457
    OBMC_FILTER (x + 6, 0, 0, 5, 1, 2);
458
    OBMC_FILTER (x + 7, 0, 0, 4, 2, 2);
459
}
460
 
461
/* obmc for 1 8x8 luma block */
462
static inline void obmc_motion(MpegEncContext *s,
463
                               uint8_t *dest, uint8_t *src,
464
                               int src_x, int src_y,
465
                               op_pixels_func *pix_op,
466
                               int16_t mv[5][2] /* mid top left right bottom */)
467
#define MID    0
468
{
469
    int i;
470
    uint8_t *ptr[5];
471
 
472
    av_assert2(s->quarter_sample == 0);
473
 
474
    for (i = 0; i < 5; i++) {
475
        if (i && mv[i][0] == mv[MID][0] && mv[i][1] == mv[MID][1]) {
476
            ptr[i] = ptr[MID];
477
        } else {
478
            ptr[i] = s->obmc_scratchpad + 8 * (i & 1) +
479
                     s->linesize * 8 * (i >> 1);
480
            hpel_motion(s, ptr[i], src, src_x, src_y, pix_op,
481
                        mv[i][0], mv[i][1]);
482
        }
483
    }
484
 
485
    put_obmc(dest, ptr, s->linesize);
486
}
487
 
488
static inline void qpel_motion(MpegEncContext *s,
489
                               uint8_t *dest_y,
490
                               uint8_t *dest_cb,
491
                               uint8_t *dest_cr,
492
                               int field_based, int bottom_field,
493
                               int field_select, uint8_t **ref_picture,
494
                               op_pixels_func (*pix_op)[4],
495
                               qpel_mc_func (*qpix_op)[16],
496
                               int motion_x, int motion_y, int h)
497
{
498
    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
499
    int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos;
500
    ptrdiff_t linesize, uvlinesize;
501
 
502
    dxy   = ((motion_y & 3) << 2) | (motion_x & 3);
503
 
504
    src_x = s->mb_x *  16                 + (motion_x >> 2);
505
    src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
506
 
507
    v_edge_pos = s->v_edge_pos >> field_based;
508
    linesize   = s->linesize   << field_based;
509
    uvlinesize = s->uvlinesize << field_based;
510
 
511
    if (field_based) {
512
        mx = motion_x / 2;
513
        my = motion_y >> 1;
514
    } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA2) {
515
        static const int rtab[8] = { 0, 0, 1, 1, 0, 0, 0, 1 };
516
        mx = (motion_x >> 1) + rtab[motion_x & 7];
517
        my = (motion_y >> 1) + rtab[motion_y & 7];
518
    } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA) {
519
        mx = (motion_x >> 1) | (motion_x & 1);
520
        my = (motion_y >> 1) | (motion_y & 1);
521
    } else {
522
        mx = motion_x / 2;
523
        my = motion_y / 2;
524
    }
525
    mx = (mx >> 1) | (mx & 1);
526
    my = (my >> 1) | (my & 1);
527
 
528
    uvdxy = (mx & 1) | ((my & 1) << 1);
529
    mx  >>= 1;
530
    my  >>= 1;
531
 
532
    uvsrc_x = s->mb_x *  8                 + mx;
533
    uvsrc_y = s->mb_y * (8 >> field_based) + my;
534
 
535
    ptr_y  = ref_picture[0] + src_y   * linesize   + src_x;
536
    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
537
    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
538
 
539
    if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 16, 0) ||
540
        (unsigned)src_y > FFMAX(   v_edge_pos - (motion_y & 3) - h, 0)) {
541
        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
542
                                 s->linesize,
543
                                 ptr_y, s->linesize,
544
                                 17, 17 + field_based,
545
                                 src_x, src_y << field_based,
546
                                 s->h_edge_pos, s->v_edge_pos);
547
        ptr_y = s->edge_emu_buffer;
548
        if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
549
            uint8_t *uvbuf = s->edge_emu_buffer + 18 * s->linesize;
550
            s->vdsp.emulated_edge_mc(uvbuf, s->uvlinesize,
551
                                     ptr_cb,
552
                                     s->uvlinesize,
553
                                     9, 9 + field_based,
554
                                     uvsrc_x, uvsrc_y << field_based,
555
                                     s->h_edge_pos >> 1, s->v_edge_pos >> 1);
556
            s->vdsp.emulated_edge_mc(uvbuf + 16, s->uvlinesize,
557
                                     ptr_cr,
558
                                     s->uvlinesize,
559
                                     9, 9 + field_based,
560
                                     uvsrc_x, uvsrc_y << field_based,
561
                                     s->h_edge_pos >> 1, s->v_edge_pos >> 1);
562
            ptr_cb = uvbuf;
563
            ptr_cr = uvbuf + 16;
564
        }
565
    }
566
 
567
    if (!field_based)
568
        qpix_op[0][dxy](dest_y, ptr_y, linesize);
569
    else {
570
        if (bottom_field) {
571
            dest_y  += s->linesize;
572
            dest_cb += s->uvlinesize;
573
            dest_cr += s->uvlinesize;
574
        }
575
 
576
        if (field_select) {
577
            ptr_y  += s->linesize;
578
            ptr_cb += s->uvlinesize;
579
            ptr_cr += s->uvlinesize;
580
        }
581
        // damn interlaced mode
582
        // FIXME boundary mirroring is not exactly correct here
583
        qpix_op[1][dxy](dest_y, ptr_y, linesize);
584
        qpix_op[1][dxy](dest_y + 8, ptr_y + 8, linesize);
585
    }
586
    if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
587
        pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
588
        pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
589
    }
590
}
591
 
592
/**
593
 * h263 chroma 4mv motion compensation.
594
 */
595
static void chroma_4mv_motion(MpegEncContext *s,
596
                              uint8_t *dest_cb, uint8_t *dest_cr,
597
                              uint8_t **ref_picture,
598
                              op_pixels_func *pix_op,
599
                              int mx, int my)
600
{
601
    uint8_t *ptr;
602
    int src_x, src_y, dxy, emu = 0;
603
    ptrdiff_t offset;
604
 
605
    /* In case of 8X8, we construct a single chroma motion vector
606
     * with a special rounding */
607
    mx = ff_h263_round_chroma(mx);
608
    my = ff_h263_round_chroma(my);
609
 
610
    dxy  = ((my & 1) << 1) | (mx & 1);
611
    mx >>= 1;
612
    my >>= 1;
613
 
614
    src_x = s->mb_x * 8 + mx;
615
    src_y = s->mb_y * 8 + my;
616
    src_x = av_clip(src_x, -8, (s->width >> 1));
617
    if (src_x == (s->width >> 1))
618
        dxy &= ~1;
619
    src_y = av_clip(src_y, -8, (s->height >> 1));
620
    if (src_y == (s->height >> 1))
621
        dxy &= ~2;
622
 
623
    offset = src_y * s->uvlinesize + src_x;
624
    ptr    = ref_picture[1] + offset;
625
    if (s->flags & CODEC_FLAG_EMU_EDGE) {
626
        if ((unsigned)src_x > FFMAX((s->h_edge_pos >> 1) - (dxy & 1) - 8, 0) ||
627
            (unsigned)src_y > FFMAX((s->v_edge_pos >> 1) - (dxy >> 1) - 8, 0)) {
628
            s->vdsp.emulated_edge_mc(s->edge_emu_buffer, s->uvlinesize,
629
                                     ptr, s->uvlinesize,
630
                                     9, 9, src_x, src_y,
631
                                     s->h_edge_pos >> 1, s->v_edge_pos >> 1);
632
            ptr = s->edge_emu_buffer;
633
            emu = 1;
634
        }
635
    }
636
    pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
637
 
638
    ptr = ref_picture[2] + offset;
639
    if (emu) {
640
        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, s->uvlinesize,
641
                                 ptr, s->uvlinesize,
642
                                 9, 9, src_x, src_y,
643
                                 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
644
        ptr = s->edge_emu_buffer;
645
    }
646
    pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
647
}
648
 
649
static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir)
650
{
651
    /* fetch pixels for estimated mv 4 macroblocks ahead
652
     * optimized for 64byte cache lines */
653
    const int shift = s->quarter_sample ? 2 : 1;
654
    const int mx    = (s->mv[dir][0][0] >> shift) + 16 * s->mb_x + 8;
655
    const int my    = (s->mv[dir][0][1] >> shift) + 16 * s->mb_y;
656
    int off         = mx + (my + (s->mb_x & 3) * 4) * s->linesize + 64;
657
 
658
    s->vdsp.prefetch(pix[0] + off, s->linesize, 4);
659
    off = (mx >> 1) + ((my >> 1) + (s->mb_x & 7)) * s->uvlinesize + 64;
660
    s->vdsp.prefetch(pix[1] + off, pix[2] - pix[1], 2);
661
}
662
 
663
static inline void apply_obmc(MpegEncContext *s,
664
                              uint8_t *dest_y,
665
                              uint8_t *dest_cb,
666
                              uint8_t *dest_cr,
667
                              uint8_t **ref_picture,
668
                              op_pixels_func (*pix_op)[4])
669
{
670
    LOCAL_ALIGNED_8(int16_t, mv_cache, [4], [4][2]);
671
    Picture *cur_frame   = &s->current_picture;
672
    int mb_x = s->mb_x;
673
    int mb_y = s->mb_y;
674
    const int xy         = mb_x + mb_y * s->mb_stride;
675
    const int mot_stride = s->b8_stride;
676
    const int mot_xy     = mb_x * 2 + mb_y * 2 * mot_stride;
677
    int mx, my, i;
678
 
679
    av_assert2(!s->mb_skipped);
680
 
681
    AV_COPY32(mv_cache[1][1], cur_frame->motion_val[0][mot_xy]);
682
    AV_COPY32(mv_cache[1][2], cur_frame->motion_val[0][mot_xy + 1]);
683
 
684
    AV_COPY32(mv_cache[2][1],
685
              cur_frame->motion_val[0][mot_xy + mot_stride]);
686
    AV_COPY32(mv_cache[2][2],
687
              cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
688
 
689
    AV_COPY32(mv_cache[3][1],
690
              cur_frame->motion_val[0][mot_xy + mot_stride]);
691
    AV_COPY32(mv_cache[3][2],
692
              cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
693
 
694
    if (mb_y == 0 || IS_INTRA(cur_frame->mb_type[xy - s->mb_stride])) {
695
        AV_COPY32(mv_cache[0][1], mv_cache[1][1]);
696
        AV_COPY32(mv_cache[0][2], mv_cache[1][2]);
697
    } else {
698
        AV_COPY32(mv_cache[0][1],
699
                  cur_frame->motion_val[0][mot_xy - mot_stride]);
700
        AV_COPY32(mv_cache[0][2],
701
                  cur_frame->motion_val[0][mot_xy - mot_stride + 1]);
702
    }
703
 
704
    if (mb_x == 0 || IS_INTRA(cur_frame->mb_type[xy - 1])) {
705
        AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
706
        AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
707
    } else {
708
        AV_COPY32(mv_cache[1][0], cur_frame->motion_val[0][mot_xy - 1]);
709
        AV_COPY32(mv_cache[2][0],
710
                  cur_frame->motion_val[0][mot_xy - 1 + mot_stride]);
711
    }
712
 
713
    if (mb_x + 1 >= s->mb_width || IS_INTRA(cur_frame->mb_type[xy + 1])) {
714
        AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
715
        AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
716
    } else {
717
        AV_COPY32(mv_cache[1][3], cur_frame->motion_val[0][mot_xy + 2]);
718
        AV_COPY32(mv_cache[2][3],
719
                  cur_frame->motion_val[0][mot_xy + 2 + mot_stride]);
720
    }
721
 
722
    mx = 0;
723
    my = 0;
724
    for (i = 0; i < 4; i++) {
725
        const int x      = (i & 1) + 1;
726
        const int y      = (i >> 1) + 1;
727
        int16_t mv[5][2] = {
728
            { mv_cache[y][x][0],     mv_cache[y][x][1]         },
729
            { mv_cache[y - 1][x][0], mv_cache[y - 1][x][1]     },
730
            { mv_cache[y][x - 1][0], mv_cache[y][x - 1][1]     },
731
            { mv_cache[y][x + 1][0], mv_cache[y][x + 1][1]     },
732
            { mv_cache[y + 1][x][0], mv_cache[y + 1][x][1]     }
733
        };
734
        // FIXME cleanup
735
        obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
736
                    ref_picture[0],
737
                    mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >> 1) * 8,
738
                    pix_op[1],
739
                    mv);
740
 
741
        mx += mv[0][0];
742
        my += mv[0][1];
743
    }
744
    if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY))
745
        chroma_4mv_motion(s, dest_cb, dest_cr,
746
                          ref_picture, pix_op[1],
747
                          mx, my);
748
}
749
 
750
static inline void apply_8x8(MpegEncContext *s,
751
                             uint8_t *dest_y,
752
                             uint8_t *dest_cb,
753
                             uint8_t *dest_cr,
754
                             int dir,
755
                             uint8_t **ref_picture,
756
                             qpel_mc_func (*qpix_op)[16],
757
                             op_pixels_func (*pix_op)[4])
758
{
759
    int dxy, mx, my, src_x, src_y;
760
    int i;
761
    int mb_x = s->mb_x;
762
    int mb_y = s->mb_y;
763
    uint8_t *ptr, *dest;
764
 
765
    mx = 0;
766
    my = 0;
767
    if (s->quarter_sample) {
768
        for (i = 0; i < 4; i++) {
769
            int motion_x = s->mv[dir][i][0];
770
            int motion_y = s->mv[dir][i][1];
771
 
772
            dxy   = ((motion_y & 3) << 2) | (motion_x & 3);
773
            src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
774
            src_y = mb_y * 16 + (motion_y >> 2) + (i >> 1) * 8;
775
 
776
            /* WARNING: do no forget half pels */
777
            src_x = av_clip(src_x, -16, s->width);
778
            if (src_x == s->width)
779
                dxy &= ~3;
780
            src_y = av_clip(src_y, -16, s->height);
781
            if (src_y == s->height)
782
                dxy &= ~12;
783
 
784
            ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
785
            if (s->flags & CODEC_FLAG_EMU_EDGE) {
786
                if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 8, 0) ||
787
                    (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 3) - 8, 0)) {
788
                    s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
789
                                             s->linesize, ptr,
790
                                             s->linesize,
791
                                             9, 9,
792
                                             src_x, src_y,
793
                                             s->h_edge_pos,
794
                                             s->v_edge_pos);
795
                    ptr = s->edge_emu_buffer;
796
                }
797
            }
798
            dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
799
            qpix_op[1][dxy](dest, ptr, s->linesize);
800
 
801
            mx += s->mv[dir][i][0] / 2;
802
            my += s->mv[dir][i][1] / 2;
803
        }
804
    } else {
805
        for (i = 0; i < 4; i++) {
806
            hpel_motion(s,
807
                        dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
808
                        ref_picture[0],
809
                        mb_x * 16 + (i & 1) * 8,
810
                        mb_y * 16 + (i >> 1) * 8,
811
                        pix_op[1],
812
                        s->mv[dir][i][0],
813
                        s->mv[dir][i][1]);
814
 
815
            mx += s->mv[dir][i][0];
816
            my += s->mv[dir][i][1];
817
        }
818
    }
819
 
820
    if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY))
821
        chroma_4mv_motion(s, dest_cb, dest_cr,
822
                          ref_picture, pix_op[1], mx, my);
823
}
824
 
825
/**
826
 * motion compensation of a single macroblock
827
 * @param s context
828
 * @param dest_y luma destination pointer
829
 * @param dest_cb chroma cb/u destination pointer
830
 * @param dest_cr chroma cr/v destination pointer
831
 * @param dir direction (0->forward, 1->backward)
832
 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
833
 * @param pix_op halfpel motion compensation function (average or put normally)
834
 * @param qpix_op qpel motion compensation function (average or put normally)
835
 * the motion vectors are taken from s->mv and the MV type from s->mv_type
836
 */
837
static av_always_inline void MPV_motion_internal(MpegEncContext *s,
838
                                                 uint8_t *dest_y,
839
                                                 uint8_t *dest_cb,
840
                                                 uint8_t *dest_cr,
841
                                                 int dir,
842
                                                 uint8_t **ref_picture,
843
                                                 op_pixels_func (*pix_op)[4],
844
                                                 qpel_mc_func (*qpix_op)[16],
845
                                                 int is_mpeg12)
846
{
847
    int i;
848
    int mb_y = s->mb_y;
849
 
850
    prefetch_motion(s, ref_picture, dir);
851
 
852
    if (!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B) {
853
        apply_obmc(s, dest_y, dest_cb, dest_cr, ref_picture, pix_op);
854
        return;
855
    }
856
 
857
    switch (s->mv_type) {
858
    case MV_TYPE_16X16:
859
        if (s->mcsel) {
860
            if (s->real_sprite_warping_points == 1) {
861
                gmc1_motion(s, dest_y, dest_cb, dest_cr,
862
                            ref_picture);
863
            } else {
864
                gmc_motion(s, dest_y, dest_cb, dest_cr,
865
                           ref_picture);
866
            }
867
        } else if (!is_mpeg12 && s->quarter_sample) {
868
            qpel_motion(s, dest_y, dest_cb, dest_cr,
869
                        0, 0, 0,
870
                        ref_picture, pix_op, qpix_op,
871
                        s->mv[dir][0][0], s->mv[dir][0][1], 16);
872
        } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
873
                   s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {
874
            ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
875
                            ref_picture, pix_op,
876
                            s->mv[dir][0][0], s->mv[dir][0][1], 16);
877
        } else {
878
            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
879
                        ref_picture, pix_op,
880
                        s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
881
        }
882
        break;
883
    case MV_TYPE_8X8:
884
        if (!is_mpeg12)
885
            apply_8x8(s, dest_y, dest_cb, dest_cr,
886
                      dir, ref_picture, qpix_op, pix_op);
887
        break;
888
    case MV_TYPE_FIELD:
889
        if (s->picture_structure == PICT_FRAME) {
890
            if (!is_mpeg12 && s->quarter_sample) {
891
                for (i = 0; i < 2; i++)
892
                    qpel_motion(s, dest_y, dest_cb, dest_cr,
893
                                1, i, s->field_select[dir][i],
894
                                ref_picture, pix_op, qpix_op,
895
                                s->mv[dir][i][0], s->mv[dir][i][1], 8);
896
            } else {
897
                /* top field */
898
                mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
899
                                  0, s->field_select[dir][0],
900
                                  ref_picture, pix_op,
901
                                  s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
902
                /* bottom field */
903
                mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
904
                                  1, s->field_select[dir][1],
905
                                  ref_picture, pix_op,
906
                                  s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
907
            }
908
        } else {
909
            if (   s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field
910
                || !ref_picture[0]) {
911
                ref_picture = s->current_picture_ptr->f.data;
912
            }
913
 
914
            mpeg_motion(s, dest_y, dest_cb, dest_cr,
915
                        s->field_select[dir][0],
916
                        ref_picture, pix_op,
917
                        s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y >> 1);
918
        }
919
        break;
920
    case MV_TYPE_16X8:
921
        for (i = 0; i < 2; i++) {
922
            uint8_t **ref2picture;
923
 
924
            if ((s->picture_structure == s->field_select[dir][i] + 1
925
                || s->pict_type == AV_PICTURE_TYPE_B || s->first_field) && ref_picture[0]) {
926
                ref2picture = ref_picture;
927
            } else {
928
                ref2picture = s->current_picture_ptr->f.data;
929
            }
930
 
931
            mpeg_motion(s, dest_y, dest_cb, dest_cr,
932
                        s->field_select[dir][i],
933
                        ref2picture, pix_op,
934
                        s->mv[dir][i][0], s->mv[dir][i][1] + 16 * i,
935
                        8, mb_y >> 1);
936
 
937
            dest_y  += 16 * s->linesize;
938
            dest_cb += (16 >> s->chroma_y_shift) * s->uvlinesize;
939
            dest_cr += (16 >> s->chroma_y_shift) * s->uvlinesize;
940
        }
941
        break;
942
    case MV_TYPE_DMV:
943
        if (s->picture_structure == PICT_FRAME) {
944
            for (i = 0; i < 2; i++) {
945
                int j;
946
                for (j = 0; j < 2; j++)
947
                    mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
948
                                      j, j ^ i, ref_picture, pix_op,
949
                                      s->mv[dir][2 * i + j][0],
950
                                      s->mv[dir][2 * i + j][1], 8, mb_y);
951
                pix_op = s->hdsp.avg_pixels_tab;
952
            }
953
        } else {
954
            if (!ref_picture[0]) {
955
                ref_picture = s->current_picture_ptr->f.data;
956
            }
957
            for (i = 0; i < 2; i++) {
958
                mpeg_motion(s, dest_y, dest_cb, dest_cr,
959
                            s->picture_structure != i + 1,
960
                            ref_picture, pix_op,
961
                            s->mv[dir][2 * i][0], s->mv[dir][2 * i][1],
962
                            16, mb_y >> 1);
963
 
964
                // after put we make avg of the same block
965
                pix_op = s->hdsp.avg_pixels_tab;
966
 
967
                /* opposite parity is always in the same frame if this is
968
                 * second field */
969
                if (!s->first_field) {
970
                    ref_picture = s->current_picture_ptr->f.data;
971
                }
972
            }
973
        }
974
        break;
975
    default: av_assert2(0);
976
    }
977
}
978
 
979
void ff_MPV_motion(MpegEncContext *s,
980
                   uint8_t *dest_y, uint8_t *dest_cb,
981
                   uint8_t *dest_cr, int dir,
982
                   uint8_t **ref_picture,
983
                   op_pixels_func (*pix_op)[4],
984
                   qpel_mc_func (*qpix_op)[16])
985
{
986
#if !CONFIG_SMALL
987
    if (s->out_format == FMT_MPEG1)
988
        MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
989
                            ref_picture, pix_op, qpix_op, 1);
990
    else
991
#endif
992
        MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
993
                            ref_picture, pix_op, qpix_op, 0);
994
}