avcodec/h264_slice: assert relation between current_slice ans slice_ctx
[ffmpeg.git] / libavcodec / mpegvideo_enc.c
1 /*
2  * The simplest mpeg encoder (well, it was the simplest!)
3  * Copyright (c) 2000,2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24
25 /*
26  * non linear quantizers with large QPs and VBV with restrictive qmin fixes sponsored by NOA GmbH
27  */
28
29 /**
30  * @file
31  * The simplest mpeg encoder (well, it was the simplest!).
32  */
33
34 #include <stdint.h>
35
36 #include "libavutil/internal.h"
37 #include "libavutil/intmath.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/timer.h"
42 #include "avcodec.h"
43 #include "dct.h"
44 #include "idctdsp.h"
45 #include "mpeg12.h"
46 #include "mpegvideo.h"
47 #include "mpegvideodata.h"
48 #include "h261.h"
49 #include "h263.h"
50 #include "h263data.h"
51 #include "mjpegenc_common.h"
52 #include "mathops.h"
53 #include "mpegutils.h"
54 #include "mjpegenc.h"
55 #include "msmpeg4.h"
56 #include "pixblockdsp.h"
57 #include "qpeldsp.h"
58 #include "faandct.h"
59 #include "thread.h"
60 #include "aandcttab.h"
61 #include "flv.h"
62 #include "mpeg4video.h"
63 #include "internal.h"
64 #include "bytestream.h"
65 #include "wmv2.h"
66 #include "rv10.h"
67 #include <limits.h>
68 #include "sp5x.h"
69
70 #define QUANT_BIAS_SHIFT 8
71
72 #define QMAT_SHIFT_MMX 16
73 #define QMAT_SHIFT 21
74
75 static int encode_picture(MpegEncContext *s, int picture_number);
76 static int dct_quantize_refine(MpegEncContext *s, int16_t *block, int16_t *weight, int16_t *orig, int n, int qscale);
77 static int sse_mb(MpegEncContext *s);
78 static void denoise_dct_c(MpegEncContext *s, int16_t *block);
79 static int dct_quantize_trellis_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
80
81 static uint8_t default_mv_penalty[MAX_FCODE + 1][MAX_DMV * 2 + 1];
82 static uint8_t default_fcode_tab[MAX_MV * 2 + 1];
83
84 const AVOption ff_mpv_generic_options[] = {
85     FF_MPV_COMMON_OPTS
86     { NULL },
87 };
88
89 void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64],
90                        uint16_t (*qmat16)[2][64],
91                        const uint16_t *quant_matrix,
92                        int bias, int qmin, int qmax, int intra)
93 {
94     FDCTDSPContext *fdsp = &s->fdsp;
95     int qscale;
96     int shift = 0;
97
98     for (qscale = qmin; qscale <= qmax; qscale++) {
99         int i;
100         int qscale2;
101
102         if (s->q_scale_type) qscale2 = ff_mpeg2_non_linear_qscale[qscale];
103         else                 qscale2 = qscale << 1;
104
105         if (fdsp->fdct == ff_jpeg_fdct_islow_8  ||
106 #if CONFIG_FAANDCT
107             fdsp->fdct == ff_faandct            ||
108 #endif /* CONFIG_FAANDCT */
109             fdsp->fdct == ff_jpeg_fdct_islow_10) {
110             for (i = 0; i < 64; i++) {
111                 const int j = s->idsp.idct_permutation[i];
112                 int64_t den = (int64_t) qscale2 * quant_matrix[j];
113                 /* 16 <= qscale * quant_matrix[i] <= 7905
114                  * Assume x = ff_aanscales[i] * qscale * quant_matrix[i]
115                  *             19952 <=              x  <= 249205026
116                  * (1 << 36) / 19952 >= (1 << 36) / (x) >= (1 << 36) / 249205026
117                  *           3444240 >= (1 << 36) / (x) >= 275 */
118
119                 qmat[qscale][i] = (int)((UINT64_C(2) << QMAT_SHIFT) / den);
120             }
121         } else if (fdsp->fdct == ff_fdct_ifast) {
122             for (i = 0; i < 64; i++) {
123                 const int j = s->idsp.idct_permutation[i];
124                 int64_t den = ff_aanscales[i] * (int64_t) qscale2 * quant_matrix[j];
125                 /* 16 <= qscale * quant_matrix[i] <= 7905
126                  * Assume x = ff_aanscales[i] * qscale * quant_matrix[i]
127                  *             19952 <=              x  <= 249205026
128                  * (1 << 36) / 19952 >= (1 << 36) / (x) >= (1 << 36) / 249205026
129                  *           3444240 >= (1 << 36) / (x) >= 275 */
130
131                 qmat[qscale][i] = (int)((UINT64_C(2) << (QMAT_SHIFT + 14)) / den);
132             }
133         } else {
134             for (i = 0; i < 64; i++) {
135                 const int j = s->idsp.idct_permutation[i];
136                 int64_t den = (int64_t) qscale2 * quant_matrix[j];
137                 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
138                  * Assume x = qscale * quant_matrix[i]
139                  * So             16 <=              x  <= 7905
140                  * so (1 << 19) / 16 >= (1 << 19) / (x) >= (1 << 19) / 7905
141                  * so          32768 >= (1 << 19) / (x) >= 67 */
142                 qmat[qscale][i] = (int)((UINT64_C(2) << QMAT_SHIFT) / den);
143                 //qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) /
144                 //                    (qscale * quant_matrix[i]);
145                 qmat16[qscale][0][i] = (2 << QMAT_SHIFT_MMX) / den;
146
147                 if (qmat16[qscale][0][i] == 0 ||
148                     qmat16[qscale][0][i] == 128 * 256)
149                     qmat16[qscale][0][i] = 128 * 256 - 1;
150                 qmat16[qscale][1][i] =
151                     ROUNDED_DIV(bias * (1<<(16 - QUANT_BIAS_SHIFT)),
152                                 qmat16[qscale][0][i]);
153             }
154         }
155
156         for (i = intra; i < 64; i++) {
157             int64_t max = 8191;
158             if (fdsp->fdct == ff_fdct_ifast) {
159                 max = (8191LL * ff_aanscales[i]) >> 14;
160             }
161             while (((max * qmat[qscale][i]) >> shift) > INT_MAX) {
162                 shift++;
163             }
164         }
165     }
166     if (shift) {
167         av_log(NULL, AV_LOG_INFO,
168                "Warning, QMAT_SHIFT is larger than %d, overflows possible\n",
169                QMAT_SHIFT - shift);
170     }
171 }
172
173 static inline void update_qscale(MpegEncContext *s)
174 {
175     if (s->q_scale_type == 1 && 0) {
176         int i;
177         int bestdiff=INT_MAX;
178         int best = 1;
179
180         for (i = 0 ; i<FF_ARRAY_ELEMS(ff_mpeg2_non_linear_qscale); i++) {
181             int diff = FFABS((ff_mpeg2_non_linear_qscale[i]<<(FF_LAMBDA_SHIFT + 6)) - (int)s->lambda * 139);
182             if (ff_mpeg2_non_linear_qscale[i] < s->avctx->qmin ||
183                 (ff_mpeg2_non_linear_qscale[i] > s->avctx->qmax && !s->vbv_ignore_qmax))
184                 continue;
185             if (diff < bestdiff) {
186                 bestdiff = diff;
187                 best = i;
188             }
189         }
190         s->qscale = best;
191     } else {
192         s->qscale = (s->lambda * 139 + FF_LAMBDA_SCALE * 64) >>
193                     (FF_LAMBDA_SHIFT + 7);
194         s->qscale = av_clip(s->qscale, s->avctx->qmin, s->vbv_ignore_qmax ? 31 : s->avctx->qmax);
195     }
196
197     s->lambda2 = (s->lambda * s->lambda + FF_LAMBDA_SCALE / 2) >>
198                  FF_LAMBDA_SHIFT;
199 }
200
201 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix)
202 {
203     int i;
204
205     if (matrix) {
206         put_bits(pb, 1, 1);
207         for (i = 0; i < 64; i++) {
208             put_bits(pb, 8, matrix[ff_zigzag_direct[i]]);
209         }
210     } else
211         put_bits(pb, 1, 0);
212 }
213
214 /**
215  * init s->current_picture.qscale_table from s->lambda_table
216  */
217 void ff_init_qscale_tab(MpegEncContext *s)
218 {
219     int8_t * const qscale_table = s->current_picture.qscale_table;
220     int i;
221
222     for (i = 0; i < s->mb_num; i++) {
223         unsigned int lam = s->lambda_table[s->mb_index2xy[i]];
224         int qp = (lam * 139 + FF_LAMBDA_SCALE * 64) >> (FF_LAMBDA_SHIFT + 7);
225         qscale_table[s->mb_index2xy[i]] = av_clip(qp, s->avctx->qmin,
226                                                   s->avctx->qmax);
227     }
228 }
229
230 static void update_duplicate_context_after_me(MpegEncContext *dst,
231                                               MpegEncContext *src)
232 {
233 #define COPY(a) dst->a= src->a
234     COPY(pict_type);
235     COPY(current_picture);
236     COPY(f_code);
237     COPY(b_code);
238     COPY(qscale);
239     COPY(lambda);
240     COPY(lambda2);
241     COPY(picture_in_gop_number);
242     COPY(gop_picture_number);
243     COPY(frame_pred_frame_dct); // FIXME don't set in encode_header
244     COPY(progressive_frame);    // FIXME don't set in encode_header
245     COPY(partitioned_frame);    // FIXME don't set in encode_header
246 #undef COPY
247 }
248
249 /**
250  * Set the given MpegEncContext to defaults for encoding.
251  * the changed fields will not depend upon the prior state of the MpegEncContext.
252  */
253 static void mpv_encode_defaults(MpegEncContext *s)
254 {
255     int i;
256     ff_mpv_common_defaults(s);
257
258     for (i = -16; i < 16; i++) {
259         default_fcode_tab[i + MAX_MV] = 1;
260     }
261     s->me.mv_penalty = default_mv_penalty;
262     s->fcode_tab     = default_fcode_tab;
263
264     s->input_picture_number  = 0;
265     s->picture_in_gop_number = 0;
266 }
267
268 av_cold int ff_dct_encode_init(MpegEncContext *s) {
269     if (ARCH_X86)
270         ff_dct_encode_init_x86(s);
271
272     if (CONFIG_H263_ENCODER)
273         ff_h263dsp_init(&s->h263dsp);
274     if (!s->dct_quantize)
275         s->dct_quantize = ff_dct_quantize_c;
276     if (!s->denoise_dct)
277         s->denoise_dct  = denoise_dct_c;
278     s->fast_dct_quantize = s->dct_quantize;
279     if (s->avctx->trellis)
280         s->dct_quantize  = dct_quantize_trellis_c;
281
282     return 0;
283 }
284
285 /* init video encoder */
286 av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
287 {
288     MpegEncContext *s = avctx->priv_data;
289     AVCPBProperties *cpb_props;
290     int i, ret, format_supported;
291
292     mpv_encode_defaults(s);
293
294     switch (avctx->codec_id) {
295     case AV_CODEC_ID_MPEG2VIDEO:
296         if (avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
297             avctx->pix_fmt != AV_PIX_FMT_YUV422P) {
298             av_log(avctx, AV_LOG_ERROR,
299                    "only YUV420 and YUV422 are supported\n");
300             return -1;
301         }
302         break;
303     case AV_CODEC_ID_MJPEG:
304     case AV_CODEC_ID_AMV:
305         format_supported = 0;
306         /* JPEG color space */
307         if (avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
308             avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
309             avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
310             (avctx->color_range == AVCOL_RANGE_JPEG &&
311              (avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
312               avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
313               avctx->pix_fmt == AV_PIX_FMT_YUV444P)))
314             format_supported = 1;
315         /* MPEG color space */
316         else if (avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL &&
317                  (avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
318                   avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
319                   avctx->pix_fmt == AV_PIX_FMT_YUV444P))
320             format_supported = 1;
321
322         if (!format_supported) {
323             av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
324             return -1;
325         }
326         break;
327     default:
328         if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
329             av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
330             return -1;
331         }
332     }
333
334     switch (avctx->pix_fmt) {
335     case AV_PIX_FMT_YUVJ444P:
336     case AV_PIX_FMT_YUV444P:
337         s->chroma_format = CHROMA_444;
338         break;
339     case AV_PIX_FMT_YUVJ422P:
340     case AV_PIX_FMT_YUV422P:
341         s->chroma_format = CHROMA_422;
342         break;
343     case AV_PIX_FMT_YUVJ420P:
344     case AV_PIX_FMT_YUV420P:
345     default:
346         s->chroma_format = CHROMA_420;
347         break;
348     }
349
350     avctx->bits_per_raw_sample = av_clip(avctx->bits_per_raw_sample, 0, 8);
351
352 #if FF_API_PRIVATE_OPT
353 FF_DISABLE_DEPRECATION_WARNINGS
354     if (avctx->rtp_payload_size)
355         s->rtp_payload_size = avctx->rtp_payload_size;
356     if (avctx->me_penalty_compensation)
357         s->me_penalty_compensation = avctx->me_penalty_compensation;
358     if (avctx->pre_me)
359         s->me_pre = avctx->pre_me;
360 FF_ENABLE_DEPRECATION_WARNINGS
361 #endif
362
363     s->bit_rate = avctx->bit_rate;
364     s->width    = avctx->width;
365     s->height   = avctx->height;
366     if (avctx->gop_size > 600 &&
367         avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
368         av_log(avctx, AV_LOG_WARNING,
369                "keyframe interval too large!, reducing it from %d to %d\n",
370                avctx->gop_size, 600);
371         avctx->gop_size = 600;
372     }
373     s->gop_size     = avctx->gop_size;
374     s->avctx        = avctx;
375     if (avctx->max_b_frames > MAX_B_FRAMES) {
376         av_log(avctx, AV_LOG_ERROR, "Too many B-frames requested, maximum "
377                "is %d.\n", MAX_B_FRAMES);
378         avctx->max_b_frames = MAX_B_FRAMES;
379     }
380     s->max_b_frames = avctx->max_b_frames;
381     s->codec_id     = avctx->codec->id;
382     s->strict_std_compliance = avctx->strict_std_compliance;
383     s->quarter_sample     = (avctx->flags & AV_CODEC_FLAG_QPEL) != 0;
384     s->rtp_mode           = !!s->rtp_payload_size;
385     s->intra_dc_precision = avctx->intra_dc_precision;
386
387     // workaround some differences between how applications specify dc precision
388     if (s->intra_dc_precision < 0) {
389         s->intra_dc_precision += 8;
390     } else if (s->intra_dc_precision >= 8)
391         s->intra_dc_precision -= 8;
392
393     if (s->intra_dc_precision < 0) {
394         av_log(avctx, AV_LOG_ERROR,
395                 "intra dc precision must be positive, note some applications use"
396                 " 0 and some 8 as base meaning 8bit, the value must not be smaller than that\n");
397         return AVERROR(EINVAL);
398     }
399
400     if (s->intra_dc_precision > (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO ? 3 : 0)) {
401         av_log(avctx, AV_LOG_ERROR, "intra dc precision too large\n");
402         return AVERROR(EINVAL);
403     }
404     s->user_specified_pts = AV_NOPTS_VALUE;
405
406     if (s->gop_size <= 1) {
407         s->intra_only = 1;
408         s->gop_size   = 12;
409     } else {
410         s->intra_only = 0;
411     }
412
413 #if FF_API_MOTION_EST
414 FF_DISABLE_DEPRECATION_WARNINGS
415     s->me_method = avctx->me_method;
416 FF_ENABLE_DEPRECATION_WARNINGS
417 #endif
418
419     /* Fixed QSCALE */
420     s->fixed_qscale = !!(avctx->flags & AV_CODEC_FLAG_QSCALE);
421
422 #if FF_API_MPV_OPT
423     FF_DISABLE_DEPRECATION_WARNINGS
424     if (avctx->border_masking != 0.0)
425         s->border_masking = avctx->border_masking;
426     FF_ENABLE_DEPRECATION_WARNINGS
427 #endif
428
429     s->adaptive_quant = (s->avctx->lumi_masking ||
430                          s->avctx->dark_masking ||
431                          s->avctx->temporal_cplx_masking ||
432                          s->avctx->spatial_cplx_masking  ||
433                          s->avctx->p_masking      ||
434                          s->border_masking ||
435                          (s->mpv_flags & FF_MPV_FLAG_QP_RD)) &&
436                         !s->fixed_qscale;
437
438     s->loop_filter = !!(s->avctx->flags & AV_CODEC_FLAG_LOOP_FILTER);
439
440     if (avctx->rc_max_rate && !avctx->rc_buffer_size) {
441         switch(avctx->codec_id) {
442         case AV_CODEC_ID_MPEG1VIDEO:
443         case AV_CODEC_ID_MPEG2VIDEO:
444             avctx->rc_buffer_size = FFMAX(avctx->rc_max_rate, 15000000) * 112LL / 15000000 * 16384;
445             break;
446         case AV_CODEC_ID_MPEG4:
447         case AV_CODEC_ID_MSMPEG4V1:
448         case AV_CODEC_ID_MSMPEG4V2:
449         case AV_CODEC_ID_MSMPEG4V3:
450             if       (avctx->rc_max_rate >= 15000000) {
451                 avctx->rc_buffer_size = 320 + (avctx->rc_max_rate - 15000000LL) * (760-320) / (38400000 - 15000000);
452             } else if(avctx->rc_max_rate >=  2000000) {
453                 avctx->rc_buffer_size =  80 + (avctx->rc_max_rate -  2000000LL) * (320- 80) / (15000000 -  2000000);
454             } else if(avctx->rc_max_rate >=   384000) {
455                 avctx->rc_buffer_size =  40 + (avctx->rc_max_rate -   384000LL) * ( 80- 40) / ( 2000000 -   384000);
456             } else
457                 avctx->rc_buffer_size = 40;
458             avctx->rc_buffer_size *= 16384;
459             break;
460         }
461         if (avctx->rc_buffer_size) {
462             av_log(avctx, AV_LOG_INFO, "Automatically choosing VBV buffer size of %d kbyte\n", avctx->rc_buffer_size/8192);
463         }
464     }
465
466     if ((!avctx->rc_max_rate) != (!avctx->rc_buffer_size)) {
467         av_log(avctx, AV_LOG_ERROR, "Either both buffer size and max rate or neither must be specified\n");
468         return -1;
469     }
470
471     if (avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate) {
472         av_log(avctx, AV_LOG_INFO,
473                "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
474     }
475
476     if (avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate) {
477         av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
478         return -1;
479     }
480
481     if (avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate) {
482         av_log(avctx, AV_LOG_ERROR, "bitrate above max bitrate\n");
483         return -1;
484     }
485
486     if (avctx->rc_max_rate &&
487         avctx->rc_max_rate == avctx->bit_rate &&
488         avctx->rc_max_rate != avctx->rc_min_rate) {
489         av_log(avctx, AV_LOG_INFO,
490                "impossible bitrate constraints, this will fail\n");
491     }
492
493     if (avctx->rc_buffer_size &&
494         avctx->bit_rate * (int64_t)avctx->time_base.num >
495             avctx->rc_buffer_size * (int64_t)avctx->time_base.den) {
496         av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
497         return -1;
498     }
499
500     if (!s->fixed_qscale &&
501         avctx->bit_rate * av_q2d(avctx->time_base) >
502             avctx->bit_rate_tolerance) {
503         av_log(avctx, AV_LOG_WARNING,
504                "bitrate tolerance %d too small for bitrate %"PRId64", overriding\n", avctx->bit_rate_tolerance, (int64_t)avctx->bit_rate);
505         avctx->bit_rate_tolerance = 5 * avctx->bit_rate * av_q2d(avctx->time_base);
506     }
507
508     if (s->avctx->rc_max_rate &&
509         s->avctx->rc_min_rate == s->avctx->rc_max_rate &&
510         (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
511          s->codec_id == AV_CODEC_ID_MPEG2VIDEO) &&
512         90000LL * (avctx->rc_buffer_size - 1) >
513             s->avctx->rc_max_rate * 0xFFFFLL) {
514         av_log(avctx, AV_LOG_INFO,
515                "Warning vbv_delay will be set to 0xFFFF (=VBR) as the "
516                "specified vbv buffer is too large for the given bitrate!\n");
517     }
518
519     if ((s->avctx->flags & AV_CODEC_FLAG_4MV) && s->codec_id != AV_CODEC_ID_MPEG4 &&
520         s->codec_id != AV_CODEC_ID_H263 && s->codec_id != AV_CODEC_ID_H263P &&
521         s->codec_id != AV_CODEC_ID_FLV1) {
522         av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
523         return -1;
524     }
525
526     if (s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE) {
527         av_log(avctx, AV_LOG_ERROR,
528                "OBMC is only supported with simple mb decision\n");
529         return -1;
530     }
531
532     if (s->quarter_sample && s->codec_id != AV_CODEC_ID_MPEG4) {
533         av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
534         return -1;
535     }
536
537     if (s->max_b_frames                    &&
538         s->codec_id != AV_CODEC_ID_MPEG4      &&
539         s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
540         s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
541         av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
542         return -1;
543     }
544     if (s->max_b_frames < 0) {
545         av_log(avctx, AV_LOG_ERROR,
546                "max b frames must be 0 or positive for mpegvideo based encoders\n");
547         return -1;
548     }
549
550     if ((s->codec_id == AV_CODEC_ID_MPEG4 ||
551          s->codec_id == AV_CODEC_ID_H263  ||
552          s->codec_id == AV_CODEC_ID_H263P) &&
553         (avctx->sample_aspect_ratio.num > 255 ||
554          avctx->sample_aspect_ratio.den > 255)) {
555         av_log(avctx, AV_LOG_WARNING,
556                "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
557                avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
558         av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
559                    avctx->sample_aspect_ratio.num,  avctx->sample_aspect_ratio.den, 255);
560     }
561
562     if ((s->codec_id == AV_CODEC_ID_H263  ||
563          s->codec_id == AV_CODEC_ID_H263P) &&
564         (avctx->width  > 2048 ||
565          avctx->height > 1152 )) {
566         av_log(avctx, AV_LOG_ERROR, "H.263 does not support resolutions above 2048x1152\n");
567         return -1;
568     }
569     if ((s->codec_id == AV_CODEC_ID_H263  ||
570          s->codec_id == AV_CODEC_ID_H263P) &&
571         ((avctx->width &3) ||
572          (avctx->height&3) )) {
573         av_log(avctx, AV_LOG_ERROR, "w/h must be a multiple of 4\n");
574         return -1;
575     }
576
577     if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO &&
578         (avctx->width  > 4095 ||
579          avctx->height > 4095 )) {
580         av_log(avctx, AV_LOG_ERROR, "MPEG-1 does not support resolutions above 4095x4095\n");
581         return -1;
582     }
583
584     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
585         (avctx->width  > 16383 ||
586          avctx->height > 16383 )) {
587         av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support resolutions above 16383x16383\n");
588         return -1;
589     }
590
591     if (s->codec_id == AV_CODEC_ID_RV10 &&
592         (avctx->width &15 ||
593          avctx->height&15 )) {
594         av_log(avctx, AV_LOG_ERROR, "width and height must be a multiple of 16\n");
595         return AVERROR(EINVAL);
596     }
597
598     if (s->codec_id == AV_CODEC_ID_RV20 &&
599         (avctx->width &3 ||
600          avctx->height&3 )) {
601         av_log(avctx, AV_LOG_ERROR, "width and height must be a multiple of 4\n");
602         return AVERROR(EINVAL);
603     }
604
605     if ((s->codec_id == AV_CODEC_ID_WMV1 ||
606          s->codec_id == AV_CODEC_ID_WMV2) &&
607          avctx->width & 1) {
608          av_log(avctx, AV_LOG_ERROR, "width must be multiple of 2\n");
609          return -1;
610     }
611
612     if ((s->avctx->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME)) &&
613         s->codec_id != AV_CODEC_ID_MPEG4 && s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
614         av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
615         return -1;
616     }
617
618 #if FF_API_PRIVATE_OPT
619     FF_DISABLE_DEPRECATION_WARNINGS
620     if (avctx->mpeg_quant)
621         s->mpeg_quant = avctx->mpeg_quant;
622     FF_ENABLE_DEPRECATION_WARNINGS
623 #endif
624
625     // FIXME mpeg2 uses that too
626     if (s->mpeg_quant && (   s->codec_id != AV_CODEC_ID_MPEG4
627                           && s->codec_id != AV_CODEC_ID_MPEG2VIDEO)) {
628         av_log(avctx, AV_LOG_ERROR,
629                "mpeg2 style quantization not supported by codec\n");
630         return -1;
631     }
632
633     if ((s->mpv_flags & FF_MPV_FLAG_CBP_RD) && !avctx->trellis) {
634         av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
635         return -1;
636     }
637
638     if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) &&
639         s->avctx->mb_decision != FF_MB_DECISION_RD) {
640         av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
641         return -1;
642     }
643
644 #if FF_API_PRIVATE_OPT
645 FF_DISABLE_DEPRECATION_WARNINGS
646     if (avctx->scenechange_threshold)
647         s->scenechange_threshold = avctx->scenechange_threshold;
648 FF_ENABLE_DEPRECATION_WARNINGS
649 #endif
650
651     if (s->scenechange_threshold < 1000000000 &&
652         (s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP)) {
653         av_log(avctx, AV_LOG_ERROR,
654                "closed gop with scene change detection are not supported yet, "
655                "set threshold to 1000000000\n");
656         return -1;
657     }
658
659     if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY) {
660         if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
661             av_log(avctx, AV_LOG_ERROR,
662                   "low delay forcing is only available for mpeg2\n");
663             return -1;
664         }
665         if (s->max_b_frames != 0) {
666             av_log(avctx, AV_LOG_ERROR,
667                    "b frames cannot be used with low delay\n");
668             return -1;
669         }
670     }
671
672     if (s->q_scale_type == 1) {
673         if (avctx->qmax > 28) {
674             av_log(avctx, AV_LOG_ERROR,
675                    "non linear quant only supports qmax <= 28 currently\n");
676             return -1;
677         }
678     }
679
680     if (avctx->slices > 1 &&
681         (avctx->codec_id == AV_CODEC_ID_FLV1 || avctx->codec_id == AV_CODEC_ID_H261)) {
682         av_log(avctx, AV_LOG_ERROR, "Multiple slices are not supported by this codec\n");
683         return AVERROR(EINVAL);
684     }
685
686     if (s->avctx->thread_count > 1         &&
687         s->codec_id != AV_CODEC_ID_MPEG4      &&
688         s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
689         s->codec_id != AV_CODEC_ID_MPEG2VIDEO &&
690         s->codec_id != AV_CODEC_ID_MJPEG      &&
691         (s->codec_id != AV_CODEC_ID_H263P)) {
692         av_log(avctx, AV_LOG_ERROR,
693                "multi threaded encoding not supported by codec\n");
694         return -1;
695     }
696
697     if (s->avctx->thread_count < 1) {
698         av_log(avctx, AV_LOG_ERROR,
699                "automatic thread number detection not supported by codec, "
700                "patch welcome\n");
701         return -1;
702     }
703
704     if (!avctx->time_base.den || !avctx->time_base.num) {
705         av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
706         return -1;
707     }
708
709 #if FF_API_PRIVATE_OPT
710 FF_DISABLE_DEPRECATION_WARNINGS
711     if (avctx->b_frame_strategy)
712         s->b_frame_strategy = avctx->b_frame_strategy;
713     if (avctx->b_sensitivity != 40)
714         s->b_sensitivity = avctx->b_sensitivity;
715 FF_ENABLE_DEPRECATION_WARNINGS
716 #endif
717
718     if (s->b_frame_strategy && (avctx->flags & AV_CODEC_FLAG_PASS2)) {
719         av_log(avctx, AV_LOG_INFO,
720                "notice: b_frame_strategy only affects the first pass\n");
721         s->b_frame_strategy = 0;
722     }
723
724     i = av_gcd(avctx->time_base.den, avctx->time_base.num);
725     if (i > 1) {
726         av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
727         avctx->time_base.den /= i;
728         avctx->time_base.num /= i;
729         //return -1;
730     }
731
732     if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || s->codec_id == AV_CODEC_ID_MJPEG || s->codec_id==AV_CODEC_ID_AMV) {
733         // (a + x * 3 / 8) / x
734         s->intra_quant_bias = 3 << (QUANT_BIAS_SHIFT - 3);
735         s->inter_quant_bias = 0;
736     } else {
737         s->intra_quant_bias = 0;
738         // (a - x / 4) / x
739         s->inter_quant_bias = -(1 << (QUANT_BIAS_SHIFT - 2));
740     }
741
742     if (avctx->qmin > avctx->qmax || avctx->qmin <= 0) {
743         av_log(avctx, AV_LOG_ERROR, "qmin and or qmax are invalid, they must be 0 < min <= max\n");
744         return AVERROR(EINVAL);
745     }
746
747 #if FF_API_QUANT_BIAS
748 FF_DISABLE_DEPRECATION_WARNINGS
749     if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
750         s->intra_quant_bias = avctx->intra_quant_bias;
751     if (avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
752         s->inter_quant_bias = avctx->inter_quant_bias;
753 FF_ENABLE_DEPRECATION_WARNINGS
754 #endif
755
756     av_log(avctx, AV_LOG_DEBUG, "intra_quant_bias = %d inter_quant_bias = %d\n",s->intra_quant_bias,s->inter_quant_bias);
757
758     if (avctx->codec_id == AV_CODEC_ID_MPEG4 &&
759         s->avctx->time_base.den > (1 << 16) - 1) {
760         av_log(avctx, AV_LOG_ERROR,
761                "timebase %d/%d not supported by MPEG 4 standard, "
762                "the maximum admitted value for the timebase denominator "
763                "is %d\n", s->avctx->time_base.num, s->avctx->time_base.den,
764                (1 << 16) - 1);
765         return -1;
766     }
767     s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
768
769     switch (avctx->codec->id) {
770     case AV_CODEC_ID_MPEG1VIDEO:
771         s->out_format = FMT_MPEG1;
772         s->low_delay  = !!(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY);
773         avctx->delay  = s->low_delay ? 0 : (s->max_b_frames + 1);
774         break;
775     case AV_CODEC_ID_MPEG2VIDEO:
776         s->out_format = FMT_MPEG1;
777         s->low_delay  = !!(s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY);
778         avctx->delay  = s->low_delay ? 0 : (s->max_b_frames + 1);
779         s->rtp_mode   = 1;
780         break;
781     case AV_CODEC_ID_MJPEG:
782     case AV_CODEC_ID_AMV:
783         s->out_format = FMT_MJPEG;
784         s->intra_only = 1; /* force intra only for jpeg */
785         if (!CONFIG_MJPEG_ENCODER ||
786             ff_mjpeg_encode_init(s) < 0)
787             return -1;
788         avctx->delay = 0;
789         s->low_delay = 1;
790         break;
791     case AV_CODEC_ID_H261:
792         if (!CONFIG_H261_ENCODER)
793             return -1;
794         if (ff_h261_get_picture_format(s->width, s->height) < 0) {
795             av_log(avctx, AV_LOG_ERROR,
796                    "The specified picture size of %dx%d is not valid for the "
797                    "H.261 codec.\nValid sizes are 176x144, 352x288\n",
798                     s->width, s->height);
799             return -1;
800         }
801         s->out_format = FMT_H261;
802         avctx->delay  = 0;
803         s->low_delay  = 1;
804         s->rtp_mode   = 0; /* Sliced encoding not supported */
805         break;
806     case AV_CODEC_ID_H263:
807         if (!CONFIG_H263_ENCODER)
808             return -1;
809         if (ff_match_2uint16(ff_h263_format, FF_ARRAY_ELEMS(ff_h263_format),
810                              s->width, s->height) == 8) {
811             av_log(avctx, AV_LOG_ERROR,
812                    "The specified picture size of %dx%d is not valid for "
813                    "the H.263 codec.\nValid sizes are 128x96, 176x144, "
814                    "352x288, 704x576, and 1408x1152. "
815                    "Try H.263+.\n", s->width, s->height);
816             return -1;
817         }
818         s->out_format = FMT_H263;
819         avctx->delay  = 0;
820         s->low_delay  = 1;
821         break;
822     case AV_CODEC_ID_H263P:
823         s->out_format = FMT_H263;
824         s->h263_plus  = 1;
825         /* Fx */
826         s->h263_aic        = (avctx->flags & AV_CODEC_FLAG_AC_PRED) ? 1 : 0;
827         s->modified_quant  = s->h263_aic;
828         s->loop_filter     = (avctx->flags & AV_CODEC_FLAG_LOOP_FILTER) ? 1 : 0;
829         s->unrestricted_mv = s->obmc || s->loop_filter || s->umvplus;
830
831         /* /Fx */
832         /* These are just to be sure */
833         avctx->delay = 0;
834         s->low_delay = 1;
835         break;
836     case AV_CODEC_ID_FLV1:
837         s->out_format      = FMT_H263;
838         s->h263_flv        = 2; /* format = 1; 11-bit codes */
839         s->unrestricted_mv = 1;
840         s->rtp_mode  = 0; /* don't allow GOB */
841         avctx->delay = 0;
842         s->low_delay = 1;
843         break;
844     case AV_CODEC_ID_RV10:
845         s->out_format = FMT_H263;
846         avctx->delay  = 0;
847         s->low_delay  = 1;
848         break;
849     case AV_CODEC_ID_RV20:
850         s->out_format      = FMT_H263;
851         avctx->delay       = 0;
852         s->low_delay       = 1;
853         s->modified_quant  = 1;
854         s->h263_aic        = 1;
855         s->h263_plus       = 1;
856         s->loop_filter     = 1;
857         s->unrestricted_mv = 0;
858         break;
859     case AV_CODEC_ID_MPEG4:
860         s->out_format      = FMT_H263;
861         s->h263_pred       = 1;
862         s->unrestricted_mv = 1;
863         s->low_delay       = s->max_b_frames ? 0 : 1;
864         avctx->delay       = s->low_delay ? 0 : (s->max_b_frames + 1);
865         break;
866     case AV_CODEC_ID_MSMPEG4V2:
867         s->out_format      = FMT_H263;
868         s->h263_pred       = 1;
869         s->unrestricted_mv = 1;
870         s->msmpeg4_version = 2;
871         avctx->delay       = 0;
872         s->low_delay       = 1;
873         break;
874     case AV_CODEC_ID_MSMPEG4V3:
875         s->out_format        = FMT_H263;
876         s->h263_pred         = 1;
877         s->unrestricted_mv   = 1;
878         s->msmpeg4_version   = 3;
879         s->flipflop_rounding = 1;
880         avctx->delay         = 0;
881         s->low_delay         = 1;
882         break;
883     case AV_CODEC_ID_WMV1:
884         s->out_format        = FMT_H263;
885         s->h263_pred         = 1;
886         s->unrestricted_mv   = 1;
887         s->msmpeg4_version   = 4;
888         s->flipflop_rounding = 1;
889         avctx->delay         = 0;
890         s->low_delay         = 1;
891         break;
892     case AV_CODEC_ID_WMV2:
893         s->out_format        = FMT_H263;
894         s->h263_pred         = 1;
895         s->unrestricted_mv   = 1;
896         s->msmpeg4_version   = 5;
897         s->flipflop_rounding = 1;
898         avctx->delay         = 0;
899         s->low_delay         = 1;
900         break;
901     default:
902         return -1;
903     }
904
905 #if FF_API_PRIVATE_OPT
906     FF_DISABLE_DEPRECATION_WARNINGS
907     if (avctx->noise_reduction)
908         s->noise_reduction = avctx->noise_reduction;
909     FF_ENABLE_DEPRECATION_WARNINGS
910 #endif
911
912     avctx->has_b_frames = !s->low_delay;
913
914     s->encoding = 1;
915
916     s->progressive_frame    =
917     s->progressive_sequence = !(avctx->flags & (AV_CODEC_FLAG_INTERLACED_DCT |
918                                                 AV_CODEC_FLAG_INTERLACED_ME) ||
919                                 s->alternate_scan);
920
921     /* init */
922     ff_mpv_idct_init(s);
923     if (ff_mpv_common_init(s) < 0)
924         return -1;
925
926     ff_fdctdsp_init(&s->fdsp, avctx);
927     ff_me_cmp_init(&s->mecc, avctx);
928     ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
929     ff_pixblockdsp_init(&s->pdsp, avctx);
930     ff_qpeldsp_init(&s->qdsp);
931
932     if (s->msmpeg4_version) {
933         FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_stats,
934                           2 * 2 * (MAX_LEVEL + 1) *
935                           (MAX_RUN + 1) * 2 * sizeof(int), fail);
936     }
937     FF_ALLOCZ_OR_GOTO(s->avctx, s->avctx->stats_out, 256, fail);
938
939     FF_ALLOCZ_OR_GOTO(s->avctx, s->q_intra_matrix,   64 * 32 * sizeof(int), fail);
940     FF_ALLOCZ_OR_GOTO(s->avctx, s->q_chroma_intra_matrix, 64 * 32 * sizeof(int), fail);
941     FF_ALLOCZ_OR_GOTO(s->avctx, s->q_inter_matrix,   64 * 32 * sizeof(int), fail);
942     FF_ALLOCZ_OR_GOTO(s->avctx, s->q_intra_matrix16, 64 * 32 * 2 * sizeof(uint16_t), fail);
943     FF_ALLOCZ_OR_GOTO(s->avctx, s->q_chroma_intra_matrix16, 64 * 32 * 2 * sizeof(uint16_t), fail);
944     FF_ALLOCZ_OR_GOTO(s->avctx, s->q_inter_matrix16, 64 * 32 * 2 * sizeof(uint16_t), fail);
945     FF_ALLOCZ_OR_GOTO(s->avctx, s->input_picture,
946                       MAX_PICTURE_COUNT * sizeof(Picture *), fail);
947     FF_ALLOCZ_OR_GOTO(s->avctx, s->reordered_input_picture,
948                       MAX_PICTURE_COUNT * sizeof(Picture *), fail);
949
950
951     if (s->noise_reduction) {
952         FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_offset,
953                           2 * 64 * sizeof(uint16_t), fail);
954     }
955
956     ff_dct_encode_init(s);
957
958     if ((CONFIG_H263P_ENCODER || CONFIG_RV20_ENCODER) && s->modified_quant)
959         s->chroma_qscale_table = ff_h263_chroma_qscale_table;
960
961     if (s->slice_context_count > 1) {
962         s->rtp_mode = 1;
963
964         if (avctx->codec_id == AV_CODEC_ID_H263P)
965             s->h263_slice_structured = 1;
966     }
967
968     s->quant_precision = 5;
969
970 #if FF_API_PRIVATE_OPT
971 FF_DISABLE_DEPRECATION_WARNINGS
972     if (avctx->frame_skip_threshold)
973         s->frame_skip_threshold = avctx->frame_skip_threshold;
974     if (avctx->frame_skip_factor)
975         s->frame_skip_factor = avctx->frame_skip_factor;
976     if (avctx->frame_skip_exp)
977         s->frame_skip_exp = avctx->frame_skip_exp;
978     if (avctx->frame_skip_cmp != FF_CMP_DCTMAX)
979         s->frame_skip_cmp = avctx->frame_skip_cmp;
980 FF_ENABLE_DEPRECATION_WARNINGS
981 #endif
982
983     ff_set_cmp(&s->mecc, s->mecc.ildct_cmp,      s->avctx->ildct_cmp);
984     ff_set_cmp(&s->mecc, s->mecc.frame_skip_cmp, s->frame_skip_cmp);
985
986     if (CONFIG_H261_ENCODER && s->out_format == FMT_H261)
987         ff_h261_encode_init(s);
988     if (CONFIG_H263_ENCODER && s->out_format == FMT_H263)
989         ff_h263_encode_init(s);
990     if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
991         if ((ret = ff_msmpeg4_encode_init(s)) < 0)
992             return ret;
993     if ((CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
994         && s->out_format == FMT_MPEG1)
995         ff_mpeg1_encode_init(s);
996
997     /* init q matrix */
998     for (i = 0; i < 64; i++) {
999         int j = s->idsp.idct_permutation[i];
1000         if (CONFIG_MPEG4_ENCODER && s->codec_id == AV_CODEC_ID_MPEG4 &&
1001             s->mpeg_quant) {
1002             s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
1003             s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
1004         } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1005             s->intra_matrix[j] =
1006             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
1007         } else {
1008             /* mpeg1/2 */
1009             s->chroma_intra_matrix[j] =
1010             s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
1011             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
1012         }
1013         if (s->avctx->intra_matrix)
1014             s->intra_matrix[j] = s->avctx->intra_matrix[i];
1015         if (s->avctx->inter_matrix)
1016             s->inter_matrix[j] = s->avctx->inter_matrix[i];
1017     }
1018
1019     /* precompute matrix */
1020     /* for mjpeg, we do include qscale in the matrix */
1021     if (s->out_format != FMT_MJPEG) {
1022         ff_convert_matrix(s, s->q_intra_matrix, s->q_intra_matrix16,
1023                           s->intra_matrix, s->intra_quant_bias, avctx->qmin,
1024                           31, 1);
1025         ff_convert_matrix(s, s->q_inter_matrix, s->q_inter_matrix16,
1026                           s->inter_matrix, s->inter_quant_bias, avctx->qmin,
1027                           31, 0);
1028     }
1029
1030     if (ff_rate_control_init(s) < 0)
1031         return -1;
1032
1033 #if FF_API_ERROR_RATE
1034     FF_DISABLE_DEPRECATION_WARNINGS
1035     if (avctx->error_rate)
1036         s->error_rate = avctx->error_rate;
1037     FF_ENABLE_DEPRECATION_WARNINGS;
1038 #endif
1039
1040 #if FF_API_NORMALIZE_AQP
1041     FF_DISABLE_DEPRECATION_WARNINGS
1042     if (avctx->flags & CODEC_FLAG_NORMALIZE_AQP)
1043         s->mpv_flags |= FF_MPV_FLAG_NAQ;
1044     FF_ENABLE_DEPRECATION_WARNINGS;
1045 #endif
1046
1047 #if FF_API_MV0
1048     FF_DISABLE_DEPRECATION_WARNINGS
1049     if (avctx->flags & CODEC_FLAG_MV0)
1050         s->mpv_flags |= FF_MPV_FLAG_MV0;
1051     FF_ENABLE_DEPRECATION_WARNINGS
1052 #endif
1053
1054 #if FF_API_MPV_OPT
1055     FF_DISABLE_DEPRECATION_WARNINGS
1056     if (avctx->rc_qsquish != 0.0)
1057         s->rc_qsquish = avctx->rc_qsquish;
1058     if (avctx->rc_qmod_amp != 0.0)
1059         s->rc_qmod_amp = avctx->rc_qmod_amp;
1060     if (avctx->rc_qmod_freq)
1061         s->rc_qmod_freq = avctx->rc_qmod_freq;
1062     if (avctx->rc_buffer_aggressivity != 1.0)
1063         s->rc_buffer_aggressivity = avctx->rc_buffer_aggressivity;
1064     if (avctx->rc_initial_cplx != 0.0)
1065         s->rc_initial_cplx = avctx->rc_initial_cplx;
1066     if (avctx->lmin)
1067         s->lmin = avctx->lmin;
1068     if (avctx->lmax)
1069         s->lmax = avctx->lmax;
1070
1071     if (avctx->rc_eq) {
1072         av_freep(&s->rc_eq);
1073         s->rc_eq = av_strdup(avctx->rc_eq);
1074         if (!s->rc_eq)
1075             return AVERROR(ENOMEM);
1076     }
1077     FF_ENABLE_DEPRECATION_WARNINGS
1078 #endif
1079
1080 #if FF_API_PRIVATE_OPT
1081     FF_DISABLE_DEPRECATION_WARNINGS
1082     if (avctx->brd_scale)
1083         s->brd_scale = avctx->brd_scale;
1084
1085     if (avctx->prediction_method)
1086         s->pred = avctx->prediction_method + 1;
1087     FF_ENABLE_DEPRECATION_WARNINGS
1088 #endif
1089
1090     if (s->b_frame_strategy == 2) {
1091         for (i = 0; i < s->max_b_frames + 2; i++) {
1092             s->tmp_frames[i] = av_frame_alloc();
1093             if (!s->tmp_frames[i])
1094                 return AVERROR(ENOMEM);
1095
1096             s->tmp_frames[i]->format = AV_PIX_FMT_YUV420P;
1097             s->tmp_frames[i]->width  = s->width  >> s->brd_scale;
1098             s->tmp_frames[i]->height = s->height >> s->brd_scale;
1099
1100             ret = av_frame_get_buffer(s->tmp_frames[i], 32);
1101             if (ret < 0)
1102                 return ret;
1103         }
1104     }
1105
1106     cpb_props = ff_add_cpb_side_data(avctx);
1107     if (!cpb_props)
1108         return AVERROR(ENOMEM);
1109     cpb_props->max_bitrate = avctx->rc_max_rate;
1110     cpb_props->min_bitrate = avctx->rc_min_rate;
1111     cpb_props->avg_bitrate = avctx->bit_rate;
1112     cpb_props->buffer_size = avctx->rc_buffer_size;
1113
1114     return 0;
1115 fail:
1116     ff_mpv_encode_end(avctx);
1117     return AVERROR_UNKNOWN;
1118 }
1119
1120 av_cold int ff_mpv_encode_end(AVCodecContext *avctx)
1121 {
1122     MpegEncContext *s = avctx->priv_data;
1123     int i;
1124
1125     ff_rate_control_uninit(s);
1126
1127     ff_mpv_common_end(s);
1128     if (CONFIG_MJPEG_ENCODER &&
1129         s->out_format == FMT_MJPEG)
1130         ff_mjpeg_encode_close(s);
1131
1132     av_freep(&avctx->extradata);
1133
1134     for (i = 0; i < FF_ARRAY_ELEMS(s->tmp_frames); i++)
1135         av_frame_free(&s->tmp_frames[i]);
1136
1137     ff_free_picture_tables(&s->new_picture);
1138     ff_mpeg_unref_picture(s->avctx, &s->new_picture);
1139
1140     av_freep(&s->avctx->stats_out);
1141     av_freep(&s->ac_stats);
1142
1143     if(s->q_chroma_intra_matrix   != s->q_intra_matrix  ) av_freep(&s->q_chroma_intra_matrix);
1144     if(s->q_chroma_intra_matrix16 != s->q_intra_matrix16) av_freep(&s->q_chroma_intra_matrix16);
1145     s->q_chroma_intra_matrix=   NULL;
1146     s->q_chroma_intra_matrix16= NULL;
1147     av_freep(&s->q_intra_matrix);
1148     av_freep(&s->q_inter_matrix);
1149     av_freep(&s->q_intra_matrix16);
1150     av_freep(&s->q_inter_matrix16);
1151     av_freep(&s->input_picture);
1152     av_freep(&s->reordered_input_picture);
1153     av_freep(&s->dct_offset);
1154
1155     return 0;
1156 }
1157
1158 static int get_sae(uint8_t *src, int ref, int stride)
1159 {
1160     int x,y;
1161     int acc = 0;
1162
1163     for (y = 0; y < 16; y++) {
1164         for (x = 0; x < 16; x++) {
1165             acc += FFABS(src[x + y * stride] - ref);
1166         }
1167     }
1168
1169     return acc;
1170 }
1171
1172 static int get_intra_count(MpegEncContext *s, uint8_t *src,
1173                            uint8_t *ref, int stride)
1174 {
1175     int x, y, w, h;
1176     int acc = 0;
1177
1178     w = s->width  & ~15;
1179     h = s->height & ~15;
1180
1181     for (y = 0; y < h; y += 16) {
1182         for (x = 0; x < w; x += 16) {
1183             int offset = x + y * stride;
1184             int sad  = s->mecc.sad[0](NULL, src + offset, ref + offset,
1185                                       stride, 16);
1186             int mean = (s->mpvencdsp.pix_sum(src + offset, stride) + 128) >> 8;
1187             int sae  = get_sae(src + offset, mean, stride);
1188
1189             acc += sae + 500 < sad;
1190         }
1191     }
1192     return acc;
1193 }
1194
1195 static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
1196 {
1197     return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 1,
1198                             s->chroma_x_shift, s->chroma_y_shift, s->out_format,
1199                             s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
1200                             &s->linesize, &s->uvlinesize);
1201 }
1202
1203 static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
1204 {
1205     Picture *pic = NULL;
1206     int64_t pts;
1207     int i, display_picture_number = 0, ret;
1208     int encoding_delay = s->max_b_frames ? s->max_b_frames
1209                                          : (s->low_delay ? 0 : 1);
1210     int flush_offset = 1;
1211     int direct = 1;
1212
1213     if (pic_arg) {
1214         pts = pic_arg->pts;
1215         display_picture_number = s->input_picture_number++;
1216
1217         if (pts != AV_NOPTS_VALUE) {
1218             if (s->user_specified_pts != AV_NOPTS_VALUE) {
1219                 int64_t last = s->user_specified_pts;
1220
1221                 if (pts <= last) {
1222                     av_log(s->avctx, AV_LOG_ERROR,
1223                            "Invalid pts (%"PRId64") <= last (%"PRId64")\n",
1224                            pts, last);
1225                     return AVERROR(EINVAL);
1226                 }
1227
1228                 if (!s->low_delay && display_picture_number == 1)
1229                     s->dts_delta = pts - last;
1230             }
1231             s->user_specified_pts = pts;
1232         } else {
1233             if (s->user_specified_pts != AV_NOPTS_VALUE) {
1234                 s->user_specified_pts =
1235                 pts = s->user_specified_pts + 1;
1236                 av_log(s->avctx, AV_LOG_INFO,
1237                        "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n",
1238                        pts);
1239             } else {
1240                 pts = display_picture_number;
1241             }
1242         }
1243
1244         if (!pic_arg->buf[0] ||
1245             pic_arg->linesize[0] != s->linesize ||
1246             pic_arg->linesize[1] != s->uvlinesize ||
1247             pic_arg->linesize[2] != s->uvlinesize)
1248             direct = 0;
1249         if ((s->width & 15) || (s->height & 15))
1250             direct = 0;
1251         if (((intptr_t)(pic_arg->data[0])) & (STRIDE_ALIGN-1))
1252             direct = 0;
1253         if (s->linesize & (STRIDE_ALIGN-1))
1254             direct = 0;
1255
1256         ff_dlog(s->avctx, "%d %d %"PTRDIFF_SPECIFIER" %"PTRDIFF_SPECIFIER"\n", pic_arg->linesize[0],
1257                 pic_arg->linesize[1], s->linesize, s->uvlinesize);
1258
1259         i = ff_find_unused_picture(s->avctx, s->picture, direct);
1260         if (i < 0)
1261             return i;
1262
1263         pic = &s->picture[i];
1264         pic->reference = 3;
1265
1266         if (direct) {
1267             if ((ret = av_frame_ref(pic->f, pic_arg)) < 0)
1268                 return ret;
1269         }
1270         ret = alloc_picture(s, pic, direct);
1271         if (ret < 0)
1272             return ret;
1273
1274         if (!direct) {
1275             if (pic->f->data[0] + INPLACE_OFFSET == pic_arg->data[0] &&
1276                 pic->f->data[1] + INPLACE_OFFSET == pic_arg->data[1] &&
1277                 pic->f->data[2] + INPLACE_OFFSET == pic_arg->data[2]) {
1278                 // empty
1279             } else {
1280                 int h_chroma_shift, v_chroma_shift;
1281                 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1282                                                  &h_chroma_shift,
1283                                                  &v_chroma_shift);
1284
1285                 for (i = 0; i < 3; i++) {
1286                     int src_stride = pic_arg->linesize[i];
1287                     int dst_stride = i ? s->uvlinesize : s->linesize;
1288                     int h_shift = i ? h_chroma_shift : 0;
1289                     int v_shift = i ? v_chroma_shift : 0;
1290                     int w = s->width  >> h_shift;
1291                     int h = s->height >> v_shift;
1292                     uint8_t *src = pic_arg->data[i];
1293                     uint8_t *dst = pic->f->data[i];
1294                     int vpad = 16;
1295
1296                     if (   s->codec_id == AV_CODEC_ID_MPEG2VIDEO
1297                         && !s->progressive_sequence
1298                         && FFALIGN(s->height, 32) - s->height > 16)
1299                         vpad = 32;
1300
1301                     if (!s->avctx->rc_buffer_size)
1302                         dst += INPLACE_OFFSET;
1303
1304                     if (src_stride == dst_stride)
1305                         memcpy(dst, src, src_stride * h);
1306                     else {
1307                         int h2 = h;
1308                         uint8_t *dst2 = dst;
1309                         while (h2--) {
1310                             memcpy(dst2, src, w);
1311                             dst2 += dst_stride;
1312                             src += src_stride;
1313                         }
1314                     }
1315                     if ((s->width & 15) || (s->height & (vpad-1))) {
1316                         s->mpvencdsp.draw_edges(dst, dst_stride,
1317                                                 w, h,
1318                                                 16 >> h_shift,
1319                                                 vpad >> v_shift,
1320                                                 EDGE_BOTTOM);
1321                     }
1322                 }
1323             }
1324         }
1325         ret = av_frame_copy_props(pic->f, pic_arg);
1326         if (ret < 0)
1327             return ret;
1328
1329         pic->f->display_picture_number = display_picture_number;
1330         pic->f->pts = pts; // we set this here to avoid modifiying pic_arg
1331     } else {
1332         /* Flushing: When we have not received enough input frames,
1333          * ensure s->input_picture[0] contains the first picture */
1334         for (flush_offset = 0; flush_offset < encoding_delay + 1; flush_offset++)
1335             if (s->input_picture[flush_offset])
1336                 break;
1337
1338         if (flush_offset <= 1)
1339             flush_offset = 1;
1340         else
1341             encoding_delay = encoding_delay - flush_offset + 1;
1342     }
1343
1344     /* shift buffer entries */
1345     for (i = flush_offset; i < MAX_PICTURE_COUNT /*s->encoding_delay + 1*/; i++)
1346         s->input_picture[i - flush_offset] = s->input_picture[i];
1347
1348     s->input_picture[encoding_delay] = (Picture*) pic;
1349
1350     return 0;
1351 }
1352
1353 static int skip_check(MpegEncContext *s, Picture *p, Picture *ref)
1354 {
1355     int x, y, plane;
1356     int score = 0;
1357     int64_t score64 = 0;
1358
1359     for (plane = 0; plane < 3; plane++) {
1360         const int stride = p->f->linesize[plane];
1361         const int bw = plane ? 1 : 2;
1362         for (y = 0; y < s->mb_height * bw; y++) {
1363             for (x = 0; x < s->mb_width * bw; x++) {
1364                 int off = p->shared ? 0 : 16;
1365                 uint8_t *dptr = p->f->data[plane] + 8 * (x + y * stride) + off;
1366                 uint8_t *rptr = ref->f->data[plane] + 8 * (x + y * stride);
1367                 int v = s->mecc.frame_skip_cmp[1](s, dptr, rptr, stride, 8);
1368
1369                 switch (FFABS(s->frame_skip_exp)) {
1370                 case 0: score    =  FFMAX(score, v);          break;
1371                 case 1: score   += FFABS(v);                  break;
1372                 case 2: score64 += v * (int64_t)v;                       break;
1373                 case 3: score64 += FFABS(v * (int64_t)v * v);            break;
1374                 case 4: score64 += (v * (int64_t)v) * (v * (int64_t)v);  break;
1375                 }
1376             }
1377         }
1378     }
1379     emms_c();
1380
1381     if (score)
1382         score64 = score;
1383     if (s->frame_skip_exp < 0)
1384         score64 = pow(score64 / (double)(s->mb_width * s->mb_height),
1385                       -1.0/s->frame_skip_exp);
1386
1387     if (score64 < s->frame_skip_threshold)
1388         return 1;
1389     if (score64 < ((s->frame_skip_factor * (int64_t) s->lambda) >> 8))
1390         return 1;
1391     return 0;
1392 }
1393
1394 static int encode_frame(AVCodecContext *c, AVFrame *frame)
1395 {
1396     AVPacket pkt = { 0 };
1397     int ret, got_output;
1398
1399     av_init_packet(&pkt);
1400     ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
1401     if (ret < 0)
1402         return ret;
1403
1404     ret = pkt.size;
1405     av_packet_unref(&pkt);
1406     return ret;
1407 }
1408
1409 static int estimate_best_b_count(MpegEncContext *s)
1410 {
1411     AVCodec *codec    = avcodec_find_encoder(s->avctx->codec_id);
1412     AVCodecContext *c = avcodec_alloc_context3(NULL);
1413     const int scale = s->brd_scale;
1414     int i, j, out_size, p_lambda, b_lambda, lambda2;
1415     int64_t best_rd  = INT64_MAX;
1416     int best_b_count = -1;
1417
1418     if (!c)
1419         return AVERROR(ENOMEM);
1420     av_assert0(scale >= 0 && scale <= 3);
1421
1422     //emms_c();
1423     //s->next_picture_ptr->quality;
1424     p_lambda = s->last_lambda_for[AV_PICTURE_TYPE_P];
1425     //p_lambda * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
1426     b_lambda = s->last_lambda_for[AV_PICTURE_TYPE_B];
1427     if (!b_lambda) // FIXME we should do this somewhere else
1428         b_lambda = p_lambda;
1429     lambda2  = (b_lambda * b_lambda + (1 << FF_LAMBDA_SHIFT) / 2) >>
1430                FF_LAMBDA_SHIFT;
1431
1432     c->width        = s->width  >> scale;
1433     c->height       = s->height >> scale;
1434     c->flags        = AV_CODEC_FLAG_QSCALE | AV_CODEC_FLAG_PSNR;
1435     c->flags       |= s->avctx->flags & AV_CODEC_FLAG_QPEL;
1436     c->mb_decision  = s->avctx->mb_decision;
1437     c->me_cmp       = s->avctx->me_cmp;
1438     c->mb_cmp       = s->avctx->mb_cmp;
1439     c->me_sub_cmp   = s->avctx->me_sub_cmp;
1440     c->pix_fmt      = AV_PIX_FMT_YUV420P;
1441     c->time_base    = s->avctx->time_base;
1442     c->max_b_frames = s->max_b_frames;
1443
1444     if (avcodec_open2(c, codec, NULL) < 0)
1445         return -1;
1446
1447     for (i = 0; i < s->max_b_frames + 2; i++) {
1448         Picture pre_input, *pre_input_ptr = i ? s->input_picture[i - 1] :
1449                                                 s->next_picture_ptr;
1450         uint8_t *data[4];
1451
1452         if (pre_input_ptr && (!i || s->input_picture[i - 1])) {
1453             pre_input = *pre_input_ptr;
1454             memcpy(data, pre_input_ptr->f->data, sizeof(data));
1455
1456             if (!pre_input.shared && i) {
1457                 data[0] += INPLACE_OFFSET;
1458                 data[1] += INPLACE_OFFSET;
1459                 data[2] += INPLACE_OFFSET;
1460             }
1461
1462             s->mpvencdsp.shrink[scale](s->tmp_frames[i]->data[0],
1463                                        s->tmp_frames[i]->linesize[0],
1464                                        data[0],
1465                                        pre_input.f->linesize[0],
1466                                        c->width, c->height);
1467             s->mpvencdsp.shrink[scale](s->tmp_frames[i]->data[1],
1468                                        s->tmp_frames[i]->linesize[1],
1469                                        data[1],
1470                                        pre_input.f->linesize[1],
1471                                        c->width >> 1, c->height >> 1);
1472             s->mpvencdsp.shrink[scale](s->tmp_frames[i]->data[2],
1473                                        s->tmp_frames[i]->linesize[2],
1474                                        data[2],
1475                                        pre_input.f->linesize[2],
1476                                        c->width >> 1, c->height >> 1);
1477         }
1478     }
1479
1480     for (j = 0; j < s->max_b_frames + 1; j++) {
1481         int64_t rd = 0;
1482
1483         if (!s->input_picture[j])
1484             break;
1485
1486         c->error[0] = c->error[1] = c->error[2] = 0;
1487
1488         s->tmp_frames[0]->pict_type = AV_PICTURE_TYPE_I;
1489         s->tmp_frames[0]->quality   = 1 * FF_QP2LAMBDA;
1490
1491         out_size = encode_frame(c, s->tmp_frames[0]);
1492
1493         //rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
1494
1495         for (i = 0; i < s->max_b_frames + 1; i++) {
1496             int is_p = i % (j + 1) == j || i == s->max_b_frames;
1497
1498             s->tmp_frames[i + 1]->pict_type = is_p ?
1499                                      AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_B;
1500             s->tmp_frames[i + 1]->quality   = is_p ? p_lambda : b_lambda;
1501
1502             out_size = encode_frame(c, s->tmp_frames[i + 1]);
1503
1504             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
1505         }
1506
1507         /* get the delayed frames */
1508         while (out_size) {
1509             out_size = encode_frame(c, NULL);
1510             rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
1511         }
1512
1513         rd += c->error[0] + c->error[1] + c->error[2];
1514
1515         if (rd < best_rd) {
1516             best_rd = rd;
1517             best_b_count = j;
1518         }
1519     }
1520
1521     avcodec_close(c);
1522     av_freep(&c);
1523
1524     return best_b_count;
1525 }
1526
1527 static int select_input_picture(MpegEncContext *s)
1528 {
1529     int i, ret;
1530
1531     for (i = 1; i < MAX_PICTURE_COUNT; i++)
1532         s->reordered_input_picture[i - 1] = s->reordered_input_picture[i];
1533     s->reordered_input_picture[MAX_PICTURE_COUNT - 1] = NULL;
1534
1535     /* set next picture type & ordering */
1536     if (!s->reordered_input_picture[0] && s->input_picture[0]) {
1537         if (s->frame_skip_threshold || s->frame_skip_factor) {
1538             if (s->picture_in_gop_number < s->gop_size &&
1539                 s->next_picture_ptr &&
1540                 skip_check(s, s->input_picture[0], s->next_picture_ptr)) {
1541                 // FIXME check that te gop check above is +-1 correct
1542                 av_frame_unref(s->input_picture[0]->f);
1543
1544                 ff_vbv_update(s, 0);
1545
1546                 goto no_output_pic;
1547             }
1548         }
1549
1550         if (/*s->picture_in_gop_number >= s->gop_size ||*/
1551             !s->next_picture_ptr || s->intra_only) {
1552             s->reordered_input_picture[0] = s->input_picture[0];
1553             s->reordered_input_picture[0]->f->pict_type = AV_PICTURE_TYPE_I;
1554             s->reordered_input_picture[0]->f->coded_picture_number =
1555                 s->coded_picture_number++;
1556         } else {
1557             int b_frames = 0;
1558
1559             if (s->avctx->flags & AV_CODEC_FLAG_PASS2) {
1560                 for (i = 0; i < s->max_b_frames + 1; i++) {
1561                     int pict_num = s->input_picture[0]->f->display_picture_number + i;
1562
1563                     if (pict_num >= s->rc_context.num_entries)
1564                         break;
1565                     if (!s->input_picture[i]) {
1566                         s->rc_context.entry[pict_num - 1].new_pict_type = AV_PICTURE_TYPE_P;
1567                         break;
1568                     }
1569
1570                     s->input_picture[i]->f->pict_type =
1571                         s->rc_context.entry[pict_num].new_pict_type;
1572                 }
1573             }
1574
1575             if (s->b_frame_strategy == 0) {
1576                 b_frames = s->max_b_frames;
1577                 while (b_frames && !s->input_picture[b_frames])
1578                     b_frames--;
1579             } else if (s->b_frame_strategy == 1) {
1580                 for (i = 1; i < s->max_b_frames + 1; i++) {
1581                     if (s->input_picture[i] &&
1582                         s->input_picture[i]->b_frame_score == 0) {
1583                         s->input_picture[i]->b_frame_score =
1584                             get_intra_count(s,
1585                                             s->input_picture[i    ]->f->data[0],
1586                                             s->input_picture[i - 1]->f->data[0],
1587                                             s->linesize) + 1;
1588                     }
1589                 }
1590                 for (i = 0; i < s->max_b_frames + 1; i++) {
1591                     if (!s->input_picture[i] ||
1592                         s->input_picture[i]->b_frame_score - 1 >
1593                             s->mb_num / s->b_sensitivity)
1594                         break;
1595                 }
1596
1597                 b_frames = FFMAX(0, i - 1);
1598
1599                 /* reset scores */
1600                 for (i = 0; i < b_frames + 1; i++) {
1601                     s->input_picture[i]->b_frame_score = 0;
1602                 }
1603             } else if (s->b_frame_strategy == 2) {
1604                 b_frames = estimate_best_b_count(s);
1605             }
1606
1607             emms_c();
1608
1609             for (i = b_frames - 1; i >= 0; i--) {
1610                 int type = s->input_picture[i]->f->pict_type;
1611                 if (type && type != AV_PICTURE_TYPE_B)
1612                     b_frames = i;
1613             }
1614             if (s->input_picture[b_frames]->f->pict_type == AV_PICTURE_TYPE_B &&
1615                 b_frames == s->max_b_frames) {
1616                 av_log(s->avctx, AV_LOG_ERROR,
1617                        "warning, too many b frames in a row\n");
1618             }
1619
1620             if (s->picture_in_gop_number + b_frames >= s->gop_size) {
1621                 if ((s->mpv_flags & FF_MPV_FLAG_STRICT_GOP) &&
1622                     s->gop_size > s->picture_in_gop_number) {
1623                     b_frames = s->gop_size - s->picture_in_gop_number - 1;
1624                 } else {
1625                     if (s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP)
1626                         b_frames = 0;
1627                     s->input_picture[b_frames]->f->pict_type = AV_PICTURE_TYPE_I;
1628                 }
1629             }
1630
1631             if ((s->avctx->flags & AV_CODEC_FLAG_CLOSED_GOP) && b_frames &&
1632                 s->input_picture[b_frames]->f->pict_type == AV_PICTURE_TYPE_I)
1633                 b_frames--;
1634
1635             s->reordered_input_picture[0] = s->input_picture[b_frames];
1636             if (s->reordered_input_picture[0]->f->pict_type != AV_PICTURE_TYPE_I)
1637                 s->reordered_input_picture[0]->f->pict_type = AV_PICTURE_TYPE_P;
1638             s->reordered_input_picture[0]->f->coded_picture_number =
1639                 s->coded_picture_number++;
1640             for (i = 0; i < b_frames; i++) {
1641                 s->reordered_input_picture[i + 1] = s->input_picture[i];
1642                 s->reordered_input_picture[i + 1]->f->pict_type =
1643                     AV_PICTURE_TYPE_B;
1644                 s->reordered_input_picture[i + 1]->f->coded_picture_number =
1645                     s->coded_picture_number++;
1646             }
1647         }
1648     }
1649 no_output_pic:
1650     ff_mpeg_unref_picture(s->avctx, &s->new_picture);
1651
1652     if (s->reordered_input_picture[0]) {
1653         s->reordered_input_picture[0]->reference =
1654            s->reordered_input_picture[0]->f->pict_type !=
1655                AV_PICTURE_TYPE_B ? 3 : 0;
1656
1657         if ((ret = ff_mpeg_ref_picture(s->avctx, &s->new_picture, s->reordered_input_picture[0])))
1658             return ret;
1659
1660         if (s->reordered_input_picture[0]->shared || s->avctx->rc_buffer_size) {
1661             // input is a shared pix, so we can't modifiy it -> alloc a new
1662             // one & ensure that the shared one is reuseable
1663
1664             Picture *pic;
1665             int i = ff_find_unused_picture(s->avctx, s->picture, 0);
1666             if (i < 0)
1667                 return i;
1668             pic = &s->picture[i];
1669
1670             pic->reference = s->reordered_input_picture[0]->reference;
1671             if (alloc_picture(s, pic, 0) < 0) {
1672                 return -1;
1673             }
1674
1675             ret = av_frame_copy_props(pic->f, s->reordered_input_picture[0]->f);
1676             if (ret < 0)
1677                 return ret;
1678
1679             /* mark us unused / free shared pic */
1680             av_frame_unref(s->reordered_input_picture[0]->f);
1681             s->reordered_input_picture[0]->shared = 0;
1682
1683             s->current_picture_ptr = pic;
1684         } else {
1685             // input is not a shared pix -> reuse buffer for current_pix
1686             s->current_picture_ptr = s->reordered_input_picture[0];
1687             for (i = 0; i < 4; i++) {
1688                 s->new_picture.f->data[i] += INPLACE_OFFSET;
1689             }
1690         }
1691         ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1692         if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1693                                        s->current_picture_ptr)) < 0)
1694             return ret;
1695
1696         s->picture_number = s->new_picture.f->display_picture_number;
1697     }
1698     return 0;
1699 }
1700
1701 static void frame_end(MpegEncContext *s)
1702 {
1703     if (s->unrestricted_mv &&
1704         s->current_picture.reference &&
1705         !s->intra_only) {
1706         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1707         int hshift = desc->log2_chroma_w;
1708         int vshift = desc->log2_chroma_h;
1709         s->mpvencdsp.draw_edges(s->current_picture.f->data[0],
1710                                 s->current_picture.f->linesize[0],
1711                                 s->h_edge_pos, s->v_edge_pos,
1712                                 EDGE_WIDTH, EDGE_WIDTH,
1713                                 EDGE_TOP | EDGE_BOTTOM);
1714         s->mpvencdsp.draw_edges(s->current_picture.f->data[1],
1715                                 s->current_picture.f->linesize[1],
1716                                 s->h_edge_pos >> hshift,
1717                                 s->v_edge_pos >> vshift,
1718                                 EDGE_WIDTH >> hshift,
1719                                 EDGE_WIDTH >> vshift,
1720                                 EDGE_TOP | EDGE_BOTTOM);
1721         s->mpvencdsp.draw_edges(s->current_picture.f->data[2],
1722                                 s->current_picture.f->linesize[2],
1723                                 s->h_edge_pos >> hshift,
1724                                 s->v_edge_pos >> vshift,
1725                                 EDGE_WIDTH >> hshift,
1726                                 EDGE_WIDTH >> vshift,
1727                                 EDGE_TOP | EDGE_BOTTOM);
1728     }
1729
1730     emms_c();
1731
1732     s->last_pict_type                 = s->pict_type;
1733     s->last_lambda_for [s->pict_type] = s->current_picture_ptr->f->quality;
1734     if (s->pict_type!= AV_PICTURE_TYPE_B)
1735         s->last_non_b_pict_type = s->pict_type;
1736
1737 #if FF_API_CODED_FRAME
1738 FF_DISABLE_DEPRECATION_WARNINGS
1739     av_frame_copy_props(s->avctx->coded_frame, s->current_picture.f);
1740 FF_ENABLE_DEPRECATION_WARNINGS
1741 #endif
1742 #if FF_API_ERROR_FRAME
1743 FF_DISABLE_DEPRECATION_WARNINGS
1744     memcpy(s->current_picture.f->error, s->current_picture.encoding_error,
1745            sizeof(s->current_picture.encoding_error));
1746 FF_ENABLE_DEPRECATION_WARNINGS
1747 #endif
1748 }
1749
1750 static void update_noise_reduction(MpegEncContext *s)
1751 {
1752     int intra, i;
1753
1754     for (intra = 0; intra < 2; intra++) {
1755         if (s->dct_count[intra] > (1 << 16)) {
1756             for (i = 0; i < 64; i++) {
1757                 s->dct_error_sum[intra][i] >>= 1;
1758             }
1759             s->dct_count[intra] >>= 1;
1760         }
1761
1762         for (i = 0; i < 64; i++) {
1763             s->dct_offset[intra][i] = (s->noise_reduction *
1764                                        s->dct_count[intra] +
1765                                        s->dct_error_sum[intra][i] / 2) /
1766                                       (s->dct_error_sum[intra][i] + 1);
1767         }
1768     }
1769 }
1770
1771 static int frame_start(MpegEncContext *s)
1772 {
1773     int ret;
1774
1775     /* mark & release old frames */
1776     if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1777         s->last_picture_ptr != s->next_picture_ptr &&
1778         s->last_picture_ptr->f->buf[0]) {
1779         ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
1780     }
1781
1782     s->current_picture_ptr->f->pict_type = s->pict_type;
1783     s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1784
1785     ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1786     if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1787                                    s->current_picture_ptr)) < 0)
1788         return ret;
1789
1790     if (s->pict_type != AV_PICTURE_TYPE_B) {
1791         s->last_picture_ptr = s->next_picture_ptr;
1792         if (!s->droppable)
1793             s->next_picture_ptr = s->current_picture_ptr;
1794     }
1795
1796     if (s->last_picture_ptr) {
1797         ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1798         if (s->last_picture_ptr->f->buf[0] &&
1799             (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1800                                        s->last_picture_ptr)) < 0)
1801             return ret;
1802     }
1803     if (s->next_picture_ptr) {
1804         ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1805         if (s->next_picture_ptr->f->buf[0] &&
1806             (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1807                                        s->next_picture_ptr)) < 0)
1808             return ret;
1809     }
1810
1811     if (s->picture_structure!= PICT_FRAME) {
1812         int i;
1813         for (i = 0; i < 4; i++) {
1814             if (s->picture_structure == PICT_BOTTOM_FIELD) {
1815                 s->current_picture.f->data[i] +=
1816                     s->current_picture.f->linesize[i];
1817             }
1818             s->current_picture.f->linesize[i] *= 2;
1819             s->last_picture.f->linesize[i]    *= 2;
1820             s->next_picture.f->linesize[i]    *= 2;
1821         }
1822     }
1823
1824     if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1825         s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
1826         s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
1827     } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1828         s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
1829         s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
1830     } else {
1831         s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
1832         s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
1833     }
1834
1835     if (s->dct_error_sum) {
1836         av_assert2(s->noise_reduction && s->encoding);
1837         update_noise_reduction(s);
1838     }
1839
1840     return 0;
1841 }
1842
1843 int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
1844                           const AVFrame *pic_arg, int *got_packet)
1845 {
1846     MpegEncContext *s = avctx->priv_data;
1847     int i, stuffing_count, ret;
1848     int context_count = s->slice_context_count;
1849
1850     s->vbv_ignore_qmax = 0;
1851
1852     s->picture_in_gop_number++;
1853
1854     if (load_input_picture(s, pic_arg) < 0)
1855         return -1;
1856
1857     if (select_input_picture(s) < 0) {
1858         return -1;
1859     }
1860
1861     /* output? */
1862     if (s->new_picture.f->data[0]) {
1863         int growing_buffer = context_count == 1 && !pkt->data && !s->data_partitioning;
1864         int pkt_size = growing_buffer ? FFMAX(s->mb_width*s->mb_height*64+10000, avctx->internal->byte_buffer_size) - AV_INPUT_BUFFER_PADDING_SIZE
1865                                               :
1866                                               s->mb_width*s->mb_height*(MAX_MB_BYTES+100)+10000;
1867         if ((ret = ff_alloc_packet2(avctx, pkt, pkt_size, 0)) < 0)
1868             return ret;
1869         if (s->mb_info) {
1870             s->mb_info_ptr = av_packet_new_side_data(pkt,
1871                                  AV_PKT_DATA_H263_MB_INFO,
1872                                  s->mb_width*s->mb_height*12);
1873             s->prev_mb_info = s->last_mb_info = s->mb_info_size = 0;
1874         }
1875
1876         for (i = 0; i < context_count; i++) {
1877             int start_y = s->thread_context[i]->start_mb_y;
1878             int   end_y = s->thread_context[i]->  end_mb_y;
1879             int h       = s->mb_height;
1880             uint8_t *start = pkt->data + (size_t)(((int64_t) pkt->size) * start_y / h);
1881             uint8_t *end   = pkt->data + (size_t)(((int64_t) pkt->size) *   end_y / h);
1882
1883             init_put_bits(&s->thread_context[i]->pb, start, end - start);
1884         }
1885
1886         s->pict_type = s->new_picture.f->pict_type;
1887         //emms_c();
1888         ret = frame_start(s);
1889         if (ret < 0)
1890             return ret;
1891 vbv_retry:
1892         ret = encode_picture(s, s->picture_number);
1893         if (growing_buffer) {
1894             av_assert0(s->pb.buf == avctx->internal->byte_buffer);
1895             pkt->data = s->pb.buf;
1896             pkt->size = avctx->internal->byte_buffer_size;
1897         }
1898         if (ret < 0)
1899             return -1;
1900
1901 #if FF_API_STAT_BITS
1902 FF_DISABLE_DEPRECATION_WARNINGS
1903         avctx->header_bits = s->header_bits;
1904         avctx->mv_bits     = s->mv_bits;
1905         avctx->misc_bits   = s->misc_bits;
1906         avctx->i_tex_bits  = s->i_tex_bits;
1907         avctx->p_tex_bits  = s->p_tex_bits;
1908         avctx->i_count     = s->i_count;
1909         // FIXME f/b_count in avctx
1910         avctx->p_count     = s->mb_num - s->i_count - s->skip_count;
1911         avctx->skip_count  = s->skip_count;
1912 FF_ENABLE_DEPRECATION_WARNINGS
1913 #endif
1914
1915         frame_end(s);
1916
1917         if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
1918             ff_mjpeg_encode_picture_trailer(&s->pb, s->header_bits);
1919
1920         if (avctx->rc_buffer_size) {
1921             RateControlContext *rcc = &s->rc_context;
1922             int max_size = FFMAX(rcc->buffer_index * avctx->rc_max_available_vbv_use, rcc->buffer_index - 500);
1923             int hq = (s->avctx->mb_decision == FF_MB_DECISION_RD || s->avctx->trellis);
1924             int min_step = hq ? 1 : (1<<(FF_LAMBDA_SHIFT + 7))/139;
1925
1926             if (put_bits_count(&s->pb) > max_size &&
1927                 s->lambda < s->lmax) {
1928                 s->next_lambda = FFMAX(s->lambda + min_step, s->lambda *
1929                                        (s->qscale + 1) / s->qscale);
1930                 if (s->adaptive_quant) {
1931                     int i;
1932                     for (i = 0; i < s->mb_height * s->mb_stride; i++)
1933                         s->lambda_table[i] =
1934                             FFMAX(s->lambda_table[i] + min_step,
1935                                   s->lambda_table[i] * (s->qscale + 1) /
1936                                   s->qscale);
1937                 }
1938                 s->mb_skipped = 0;        // done in frame_start()
1939                 // done in encode_picture() so we must undo it
1940                 if (s->pict_type == AV_PICTURE_TYPE_P) {
1941                     if (s->flipflop_rounding          ||
1942                         s->codec_id == AV_CODEC_ID_H263P ||
1943                         s->codec_id == AV_CODEC_ID_MPEG4)
1944                         s->no_rounding ^= 1;
1945                 }
1946                 if (s->pict_type != AV_PICTURE_TYPE_B) {
1947                     s->time_base       = s->last_time_base;
1948                     s->last_non_b_time = s->time - s->pp_time;
1949                 }
1950                 for (i = 0; i < context_count; i++) {
1951                     PutBitContext *pb = &s->thread_context[i]->pb;
1952                     init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
1953                 }
1954                 s->vbv_ignore_qmax = 1;
1955                 av_log(s->avctx, AV_LOG_VERBOSE, "reencoding frame due to VBV\n");
1956                 goto vbv_retry;
1957             }
1958
1959             av_assert0(s->avctx->rc_max_rate);
1960         }
1961
1962         if (s->avctx->flags & AV_CODEC_FLAG_PASS1)
1963             ff_write_pass1_stats(s);
1964
1965         for (i = 0; i < 4; i++) {
1966             s->current_picture_ptr->encoding_error[i] = s->current_picture.encoding_error[i];
1967             avctx->error[i] += s->current_picture_ptr->encoding_error[i];
1968         }
1969         ff_side_data_set_encoder_stats(pkt, s->current_picture.f->quality,
1970                                        s->current_picture_ptr->encoding_error,
1971                                        (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1972                                        s->pict_type);
1973
1974         if (s->avctx->flags & AV_CODEC_FLAG_PASS1)
1975             assert(put_bits_count(&s->pb) == s->header_bits + s->mv_bits +
1976                                              s->misc_bits + s->i_tex_bits +
1977                                              s->p_tex_bits);
1978         flush_put_bits(&s->pb);
1979         s->frame_bits  = put_bits_count(&s->pb);
1980
1981         stuffing_count = ff_vbv_update(s, s->frame_bits);
1982         s->stuffing_bits = 8*stuffing_count;
1983         if (stuffing_count) {
1984             if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) <
1985                     stuffing_count + 50) {
1986                 av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
1987                 return -1;
1988             }
1989
1990             switch (s->codec_id) {
1991             case AV_CODEC_ID_MPEG1VIDEO:
1992             case AV_CODEC_ID_MPEG2VIDEO:
1993                 while (stuffing_count--) {
1994                     put_bits(&s->pb, 8, 0);
1995                 }
1996             break;
1997             case AV_CODEC_ID_MPEG4:
1998                 put_bits(&s->pb, 16, 0);
1999                 put_bits(&s->pb, 16, 0x1C3);
2000                 stuffing_count -= 4;
2001                 while (stuffing_count--) {
2002                     put_bits(&s->pb, 8, 0xFF);
2003                 }
2004             break;
2005             default:
2006                 av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
2007             }
2008             flush_put_bits(&s->pb);
2009             s->frame_bits  = put_bits_count(&s->pb);
2010         }
2011
2012         /* update mpeg1/2 vbv_delay for CBR */
2013         if (s->avctx->rc_max_rate                          &&
2014             s->avctx->rc_min_rate == s->avctx->rc_max_rate &&
2015             s->out_format == FMT_MPEG1                     &&
2016             90000LL * (avctx->rc_buffer_size - 1) <=
2017                 s->avctx->rc_max_rate * 0xFFFFLL) {
2018             AVCPBProperties *props;
2019             size_t props_size;
2020
2021             int vbv_delay, min_delay;
2022             double inbits  = s->avctx->rc_max_rate *
2023                              av_q2d(s->avctx->time_base);
2024             int    minbits = s->frame_bits - 8 *
2025                              (s->vbv_delay_ptr - s->pb.buf - 1);
2026             double bits    = s->rc_context.buffer_index + minbits - inbits;
2027
2028             if (bits < 0)
2029                 av_log(s->avctx, AV_LOG_ERROR,
2030                        "Internal error, negative bits\n");
2031
2032             assert(s->repeat_first_field == 0);
2033
2034             vbv_delay = bits * 90000 / s->avctx->rc_max_rate;
2035             min_delay = (minbits * 90000LL + s->avctx->rc_max_rate - 1) /
2036                         s->avctx->rc_max_rate;
2037
2038             vbv_delay = FFMAX(vbv_delay, min_delay);
2039
2040             av_assert0(vbv_delay < 0xFFFF);
2041
2042             s->vbv_delay_ptr[0] &= 0xF8;
2043             s->vbv_delay_ptr[0] |= vbv_delay >> 13;
2044             s->vbv_delay_ptr[1]  = vbv_delay >> 5;
2045             s->vbv_delay_ptr[2] &= 0x07;
2046             s->vbv_delay_ptr[2] |= vbv_delay << 3;
2047
2048             props = av_cpb_properties_alloc(&props_size);
2049             if (!props)
2050                 return AVERROR(ENOMEM);
2051             props->vbv_delay = vbv_delay * 300;
2052
2053             ret = av_packet_add_side_data(pkt, AV_PKT_DATA_CPB_PROPERTIES,
2054                                           (uint8_t*)props, props_size);
2055             if (ret < 0) {
2056                 av_freep(&props);
2057                 return ret;
2058             }
2059
2060 #if FF_API_VBV_DELAY
2061 FF_DISABLE_DEPRECATION_WARNINGS
2062             avctx->vbv_delay     = vbv_delay * 300;
2063 FF_ENABLE_DEPRECATION_WARNINGS
2064 #endif
2065         }
2066         s->total_bits     += s->frame_bits;
2067 #if FF_API_STAT_BITS
2068 FF_DISABLE_DEPRECATION_WARNINGS
2069         avctx->frame_bits  = s->frame_bits;
2070 FF_ENABLE_DEPRECATION_WARNINGS
2071 #endif
2072
2073
2074         pkt->pts = s->current_picture.f->pts;
2075         if (!s->low_delay && s->pict_type != AV_PICTURE_TYPE_B) {
2076             if (!s->current_picture.f->coded_picture_number)
2077                 pkt->dts = pkt->pts - s->dts_delta;
2078             else
2079                 pkt->dts = s->reordered_pts;
2080             s->reordered_pts = pkt->pts;
2081         } else
2082             pkt->dts = pkt->pts;
2083         if (s->current_picture.f->key_frame)
2084             pkt->flags |= AV_PKT_FLAG_KEY;
2085         if (s->mb_info)
2086             av_packet_shrink_side_data(pkt, AV_PKT_DATA_H263_MB_INFO, s->mb_info_size);
2087     } else {
2088         s->frame_bits = 0;
2089     }
2090
2091     /* release non-reference frames */
2092     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
2093         if (!s->picture[i].reference)
2094             ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2095     }
2096
2097     av_assert1((s->frame_bits & 7) == 0);
2098
2099     pkt->size = s->frame_bits / 8;
2100     *got_packet = !!pkt->size;
2101     return 0;
2102 }
2103
2104 static inline void dct_single_coeff_elimination(MpegEncContext *s,
2105                                                 int n, int threshold)
2106 {
2107     static const char tab[64] = {
2108         3, 2, 2, 1, 1, 1, 1, 1,
2109         1, 1, 1, 1, 1, 1, 1, 1,
2110         1, 1, 1, 1, 1, 1, 1, 1,
2111         0, 0, 0, 0, 0, 0, 0, 0,
2112         0, 0, 0, 0, 0, 0, 0, 0,
2113         0, 0, 0, 0, 0, 0, 0, 0,
2114         0, 0, 0, 0, 0, 0, 0, 0,
2115         0, 0, 0, 0, 0, 0, 0, 0
2116     };
2117     int score = 0;
2118     int run = 0;
2119     int i;
2120     int16_t *block = s->block[n];
2121     const int last_index = s->block_last_index[n];
2122     int skip_dc;
2123
2124     if (threshold < 0) {
2125         skip_dc = 0;
2126         threshold = -threshold;
2127     } else
2128         skip_dc = 1;
2129
2130     /* Are all we could set to zero already zero? */
2131     if (last_index <= skip_dc - 1)
2132         return;
2133
2134     for (i = 0; i <= last_index; i++) {
2135         const int j = s->intra_scantable.permutated[i];
2136         const int level = FFABS(block[j]);
2137         if (level == 1) {
2138             if (skip_dc && i == 0)
2139                 continue;
2140             score += tab[run];
2141             run = 0;
2142         } else if (level > 1) {
2143             return;
2144         } else {
2145             run++;
2146         }
2147     }
2148     if (score >= threshold)
2149         return;
2150     for (i = skip_dc; i <= last_index; i++) {
2151         const int j = s->intra_scantable.permutated[i];
2152         block[j] = 0;
2153     }
2154     if (block[0])
2155         s->block_last_index[n] = 0;
2156     else
2157         s->block_last_index[n] = -1;
2158 }
2159
2160 static inline void clip_coeffs(MpegEncContext *s, int16_t *block,
2161                                int last_index)
2162 {
2163     int i;
2164     const int maxlevel = s->max_qcoeff;
2165     const int minlevel = s->min_qcoeff;
2166     int overflow = 0;
2167
2168     if (s->mb_intra) {
2169         i = 1; // skip clipping of intra dc
2170     } else
2171         i = 0;
2172
2173     for (; i <= last_index; i++) {
2174         const int j = s->intra_scantable.permutated[i];
2175         int level = block[j];
2176
2177         if (level > maxlevel) {
2178             level = maxlevel;
2179             overflow++;
2180         } else if (level < minlevel) {
2181             level = minlevel;
2182             overflow++;
2183         }
2184
2185         block[j] = level;
2186     }
2187
2188     if (overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
2189         av_log(s->avctx, AV_LOG_INFO,
2190                "warning, clipping %d dct coefficients to %d..%d\n",
2191                overflow, minlevel, maxlevel);
2192 }
2193
2194 static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride)
2195 {
2196     int x, y;
2197     // FIXME optimize
2198     for (y = 0; y < 8; y++) {
2199         for (x = 0; x < 8; x++) {
2200             int x2, y2;
2201             int sum = 0;
2202             int sqr = 0;
2203             int count = 0;
2204
2205             for (y2 = FFMAX(y - 1, 0); y2 < FFMIN(8, y + 2); y2++) {
2206                 for (x2= FFMAX(x - 1, 0); x2 < FFMIN(8, x + 2); x2++) {
2207                     int v = ptr[x2 + y2 * stride];
2208                     sum += v;
2209                     sqr += v * v;
2210                     count++;
2211                 }
2212             }
2213             weight[x + 8 * y]= (36 * ff_sqrt(count * sqr - sum * sum)) / count;
2214         }
2215     }
2216 }
2217
2218 static av_always_inline void encode_mb_internal(MpegEncContext *s,
2219                                                 int motion_x, int motion_y,
2220                                                 int mb_block_height,
2221                                                 int mb_block_width,
2222                                                 int mb_block_count)
2223 {
2224     int16_t weight[12][64];
2225     int16_t orig[12][64];
2226     const int mb_x = s->mb_x;
2227     const int mb_y = s->mb_y;
2228     int i;
2229     int skip_dct[12];
2230     int dct_offset = s->linesize * 8; // default for progressive frames
2231     int uv_dct_offset = s->uvlinesize * 8;
2232     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
2233     ptrdiff_t wrap_y, wrap_c;
2234
2235     for (i = 0; i < mb_block_count; i++)
2236         skip_dct[i] = s->skipdct;
2237
2238     if (s->adaptive_quant) {
2239         const int last_qp = s->qscale;
2240         const int mb_xy = mb_x + mb_y * s->mb_stride;
2241
2242         s->lambda = s->lambda_table[mb_xy];
2243         update_qscale(s);
2244
2245         if (!(s->mpv_flags & FF_MPV_FLAG_QP_RD)) {
2246             s->qscale = s->current_picture_ptr->qscale_table[mb_xy];
2247             s->dquant = s->qscale - last_qp;
2248
2249             if (s->out_format == FMT_H263) {
2250                 s->dquant = av_clip(s->dquant, -2, 2);
2251
2252                 if (s->codec_id == AV_CODEC_ID_MPEG4) {
2253                     if (!s->mb_intra) {
2254                         if (s->pict_type == AV_PICTURE_TYPE_B) {
2255                             if (s->dquant & 1 || s->mv_dir & MV_DIRECT)
2256                                 s->dquant = 0;
2257                         }
2258                         if (s->mv_type == MV_TYPE_8X8)
2259                             s->dquant = 0;
2260                     }
2261                 }
2262             }
2263         }
2264         ff_set_qscale(s, last_qp + s->dquant);
2265     } else if (s->mpv_flags & FF_MPV_FLAG_QP_RD)
2266         ff_set_qscale(s, s->qscale + s->dquant);
2267
2268     wrap_y = s->linesize;
2269     wrap_c = s->uvlinesize;
2270     ptr_y  = s->new_picture.f->data[0] +
2271              (mb_y * 16 * wrap_y)              + mb_x * 16;
2272     ptr_cb = s->new_picture.f->data[1] +
2273              (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
2274     ptr_cr = s->new_picture.f->data[2] +
2275              (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
2276
2277     if((mb_x * 16 + 16 > s->width || mb_y * 16 + 16 > s->height) && s->codec_id != AV_CODEC_ID_AMV){
2278         uint8_t *ebuf = s->sc.edge_emu_buffer + 36 * wrap_y;
2279         int cw = (s->width  + s->chroma_x_shift) >> s->chroma_x_shift;
2280         int ch = (s->height + s->chroma_y_shift) >> s->chroma_y_shift;
2281         s->vdsp.emulated_edge_mc(ebuf, ptr_y,
2282                                  wrap_y, wrap_y,
2283                                  16, 16, mb_x * 16, mb_y * 16,
2284                                  s->width, s->height);
2285         ptr_y = ebuf;
2286         s->vdsp.emulated_edge_mc(ebuf + 16 * wrap_y, ptr_cb,
2287                                  wrap_c, wrap_c,
2288                                  mb_block_width, mb_block_height,
2289                                  mb_x * mb_block_width, mb_y * mb_block_height,
2290                                  cw, ch);
2291         ptr_cb = ebuf + 16 * wrap_y;
2292         s->vdsp.emulated_edge_mc(ebuf + 16 * wrap_y + 16, ptr_cr,
2293                                  wrap_c, wrap_c,
2294                                  mb_block_width, mb_block_height,
2295                                  mb_x * mb_block_width, mb_y * mb_block_height,
2296                                  cw, ch);
2297         ptr_cr = ebuf + 16 * wrap_y + 16;
2298     }
2299
2300     if (s->mb_intra) {
2301         if (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) {
2302             int progressive_score, interlaced_score;
2303
2304             s->interlaced_dct = 0;
2305             progressive_score = s->mecc.ildct_cmp[4](s, ptr_y, NULL, wrap_y, 8) +
2306                                 s->mecc.ildct_cmp[4](s, ptr_y + wrap_y * 8,
2307                                                      NULL, wrap_y, 8) - 400;
2308
2309             if (progressive_score > 0) {
2310                 interlaced_score = s->mecc.ildct_cmp[4](s, ptr_y,
2311                                                         NULL, wrap_y * 2, 8) +
2312                                    s->mecc.ildct_cmp[4](s, ptr_y + wrap_y,
2313                                                         NULL, wrap_y * 2, 8);
2314                 if (progressive_score > interlaced_score) {
2315                     s->interlaced_dct = 1;
2316
2317                     dct_offset = wrap_y;
2318                     uv_dct_offset = wrap_c;
2319                     wrap_y <<= 1;
2320                     if (s->chroma_format == CHROMA_422 ||
2321                         s->chroma_format == CHROMA_444)
2322                         wrap_c <<= 1;
2323                 }
2324             }
2325         }
2326
2327         s->pdsp.get_pixels(s->block[0], ptr_y,                  wrap_y);
2328         s->pdsp.get_pixels(s->block[1], ptr_y + 8,              wrap_y);
2329         s->pdsp.get_pixels(s->block[2], ptr_y + dct_offset,     wrap_y);
2330         s->pdsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
2331
2332         if (s->avctx->flags & AV_CODEC_FLAG_GRAY) {
2333             skip_dct[4] = 1;
2334             skip_dct[5] = 1;
2335         } else {
2336             s->pdsp.get_pixels(s->block[4], ptr_cb, wrap_c);
2337             s->pdsp.get_pixels(s->block[5], ptr_cr, wrap_c);
2338             if (!s->chroma_y_shift && s->chroma_x_shift) { /* 422 */
2339                 s->pdsp.get_pixels(s->block[6], ptr_cb + uv_dct_offset, wrap_c);
2340                 s->pdsp.get_pixels(s->block[7], ptr_cr + uv_dct_offset, wrap_c);
2341             } else if (!s->chroma_y_shift && !s->chroma_x_shift) { /* 444 */
2342                 s->pdsp.get_pixels(s->block[ 6], ptr_cb + 8, wrap_c);
2343                 s->pdsp.get_pixels(s->block[ 7], ptr_cr + 8, wrap_c);
2344                 s->pdsp.get_pixels(s->block[ 8], ptr_cb + uv_dct_offset, wrap_c);
2345                 s->pdsp.get_pixels(s->block[ 9], ptr_cr + uv_dct_offset, wrap_c);
2346                 s->pdsp.get_pixels(s->block[10], ptr_cb + uv_dct_offset + 8, wrap_c);
2347                 s->pdsp.get_pixels(s->block[11], ptr_cr + uv_dct_offset + 8, wrap_c);
2348             }
2349         }
2350     } else {
2351         op_pixels_func (*op_pix)[4];
2352         qpel_mc_func (*op_qpix)[16];
2353         uint8_t *dest_y, *dest_cb, *dest_cr;
2354
2355         dest_y  = s->dest[0];
2356         dest_cb = s->dest[1];
2357         dest_cr = s->dest[2];
2358
2359         if ((!s->no_rounding) || s->pict_type == AV_PICTURE_TYPE_B) {
2360             op_pix  = s->hdsp.put_pixels_tab;
2361             op_qpix = s->qdsp.put_qpel_pixels_tab;
2362         } else {
2363             op_pix  = s->hdsp.put_no_rnd_pixels_tab;
2364             op_qpix = s->qdsp.put_no_rnd_qpel_pixels_tab;
2365         }
2366
2367         if (s->mv_dir & MV_DIR_FORWARD) {
2368             ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0,
2369                           s->last_picture.f->data,
2370                           op_pix, op_qpix);
2371             op_pix  = s->hdsp.avg_pixels_tab;
2372             op_qpix = s->qdsp.avg_qpel_pixels_tab;
2373         }
2374         if (s->mv_dir & MV_DIR_BACKWARD) {
2375             ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1,
2376                           s->next_picture.f->data,
2377                           op_pix, op_qpix);
2378         }
2379
2380         if (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) {
2381             int progressive_score, interlaced_score;
2382
2383             s->interlaced_dct = 0;
2384             progressive_score = s->mecc.ildct_cmp[0](s, dest_y, ptr_y, wrap_y, 8) +
2385                                 s->mecc.ildct_cmp[0](s, dest_y + wrap_y * 8,
2386                                                      ptr_y + wrap_y * 8,
2387                                                      wrap_y, 8) - 400;
2388
2389             if (s->avctx->ildct_cmp == FF_CMP_VSSE)
2390                 progressive_score -= 400;
2391
2392             if (progressive_score > 0) {
2393                 interlaced_score = s->mecc.ildct_cmp[0](s, dest_y, ptr_y,
2394                                                         wrap_y * 2, 8) +
2395                                    s->mecc.ildct_cmp[0](s, dest_y + wrap_y,
2396                                                         ptr_y + wrap_y,
2397                                                         wrap_y * 2, 8);
2398
2399                 if (progressive_score > interlaced_score) {
2400                     s->interlaced_dct = 1;
2401
2402                     dct_offset = wrap_y;
2403                     uv_dct_offset = wrap_c;
2404                     wrap_y <<= 1;
2405                     if (s->chroma_format == CHROMA_422)
2406                         wrap_c <<= 1;
2407                 }
2408             }
2409         }
2410
2411         s->pdsp.diff_pixels(s->block[0], ptr_y, dest_y, wrap_y);
2412         s->pdsp.diff_pixels(s->block[1], ptr_y + 8, dest_y + 8, wrap_y);
2413         s->pdsp.diff_pixels(s->block[2], ptr_y + dct_offset,
2414                             dest_y + dct_offset, wrap_y);
2415         s->pdsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8,
2416                             dest_y + dct_offset + 8, wrap_y);
2417
2418         if (s->avctx->flags & AV_CODEC_FLAG_GRAY) {
2419             skip_dct[4] = 1;
2420             skip_dct[5] = 1;
2421         } else {
2422             s->pdsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
2423             s->pdsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
2424             if (!s->chroma_y_shift) { /* 422 */
2425                 s->pdsp.diff_pixels(s->block[6], ptr_cb + uv_dct_offset,
2426                                     dest_cb + uv_dct_offset, wrap_c);
2427                 s->pdsp.diff_pixels(s->block[7], ptr_cr + uv_dct_offset,
2428                                     dest_cr + uv_dct_offset, wrap_c);
2429             }
2430         }
2431         /* pre quantization */
2432         if (s->current_picture.mc_mb_var[s->mb_stride * mb_y + mb_x] <
2433                 2 * s->qscale * s->qscale) {
2434             // FIXME optimize
2435             if (s->mecc.sad[1](NULL, ptr_y, dest_y, wrap_y, 8) < 20 * s->qscale)
2436                 skip_dct[0] = 1;
2437             if (s->mecc.sad[1](NULL, ptr_y + 8, dest_y + 8, wrap_y, 8) < 20 * s->qscale)
2438                 skip_dct[1] = 1;
2439             if (s->mecc.sad[1](NULL, ptr_y + dct_offset, dest_y + dct_offset,
2440                                wrap_y, 8) < 20 * s->qscale)
2441                 skip_dct[2] = 1;
2442             if (s->mecc.sad[1](NULL, ptr_y + dct_offset + 8, dest_y + dct_offset + 8,
2443                                wrap_y, 8) < 20 * s->qscale)
2444                 skip_dct[3] = 1;
2445             if (s->mecc.sad[1](NULL, ptr_cb, dest_cb, wrap_c, 8) < 20 * s->qscale)
2446                 skip_dct[4] = 1;
2447             if (s->mecc.sad[1](NULL, ptr_cr, dest_cr, wrap_c, 8) < 20 * s->qscale)
2448                 skip_dct[5] = 1;
2449             if (!s->chroma_y_shift) { /* 422 */
2450                 if (s->mecc.sad[1](NULL, ptr_cb + uv_dct_offset,
2451                                    dest_cb + uv_dct_offset,
2452                                    wrap_c, 8) < 20 * s->qscale)
2453                     skip_dct[6] = 1;
2454                 if (s->mecc.sad[1](NULL, ptr_cr + uv_dct_offset,
2455                                    dest_cr + uv_dct_offset,
2456                                    wrap_c, 8) < 20 * s->qscale)
2457                     skip_dct[7] = 1;
2458             }
2459         }
2460     }
2461
2462     if (s->quantizer_noise_shaping) {
2463         if (!skip_dct[0])
2464             get_visual_weight(weight[0], ptr_y                 , wrap_y);
2465         if (!skip_dct[1])
2466             get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
2467         if (!skip_dct[2])
2468             get_visual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
2469         if (!skip_dct[3])
2470             get_visual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
2471         if (!skip_dct[4])
2472             get_visual_weight(weight[4], ptr_cb                , wrap_c);
2473         if (!skip_dct[5])
2474             get_visual_weight(weight[5], ptr_cr                , wrap_c);
2475         if (!s->chroma_y_shift) { /* 422 */
2476             if (!skip_dct[6])
2477                 get_visual_weight(weight[6], ptr_cb + uv_dct_offset,
2478                                   wrap_c);
2479             if (!skip_dct[7])
2480                 get_visual_weight(weight[7], ptr_cr + uv_dct_offset,
2481                                   wrap_c);
2482         }
2483         memcpy(orig[0], s->block[0], sizeof(int16_t) * 64 * mb_block_count);
2484     }
2485
2486     /* DCT & quantize */
2487     av_assert2(s->out_format != FMT_MJPEG || s->qscale == 8);
2488     {
2489         for (i = 0; i < mb_block_count; i++) {
2490             if (!skip_dct[i]) {
2491                 int overflow;
2492                 s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
2493                 // FIXME we could decide to change to quantizer instead of
2494                 // clipping
2495                 // JS: I don't think that would be a good idea it could lower
2496                 //     quality instead of improve it. Just INTRADC clipping
2497                 //     deserves changes in quantizer
2498                 if (overflow)
2499                     clip_coeffs(s, s->block[i], s->block_last_index[i]);
2500             } else
2501                 s->block_last_index[i] = -1;
2502         }
2503         if (s->quantizer_noise_shaping) {
2504             for (i = 0; i < mb_block_count; i++) {
2505                 if (!skip_dct[i]) {
2506                     s->block_last_index[i] =
2507                         dct_quantize_refine(s, s->block[i], weight[i],
2508                                             orig[i], i, s->qscale);
2509                 }
2510             }
2511         }
2512
2513         if (s->luma_elim_threshold && !s->mb_intra)
2514             for (i = 0; i < 4; i++)
2515                 dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
2516         if (s->chroma_elim_threshold && !s->mb_intra)
2517             for (i = 4; i < mb_block_count; i++)
2518                 dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
2519
2520         if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) {
2521             for (i = 0; i < mb_block_count; i++) {
2522                 if (s->block_last_index[i] == -1)
2523                     s->coded_score[i] = INT_MAX / 256;
2524             }
2525         }
2526     }
2527
2528     if ((s->avctx->flags & AV_CODEC_FLAG_GRAY) && s->mb_intra) {
2529         s->block_last_index[4] =
2530         s->block_last_index[5] = 0;
2531         s->block[4][0] =
2532         s->block[5][0] = (1024 + s->c_dc_scale / 2) / s->c_dc_scale;
2533         if (!s->chroma_y_shift) { /* 422 / 444 */
2534             for (i=6; i<12; i++) {
2535                 s->block_last_index[i] = 0;
2536                 s->block[i][0] = s->block[4][0];
2537             }
2538         }
2539     }
2540
2541     // non c quantize code returns incorrect block_last_index FIXME
2542     if (s->alternate_scan && s->dct_quantize != ff_dct_quantize_c) {
2543         for (i = 0; i < mb_block_count; i++) {
2544             int j;
2545             if (s->block_last_index[i] > 0) {
2546                 for (j = 63; j > 0; j--) {
2547                     if (s->block[i][s->intra_scantable.permutated[j]])
2548                         break;
2549                 }
2550                 s->block_last_index[i] = j;
2551             }
2552         }
2553     }
2554
2555     /* huffman encode */
2556     switch(s->codec_id){ //FIXME funct ptr could be slightly faster
2557     case AV_CODEC_ID_MPEG1VIDEO:
2558     case AV_CODEC_ID_MPEG2VIDEO:
2559         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
2560             ff_mpeg1_encode_mb(s, s->block, motion_x, motion_y);
2561         break;
2562     case AV_CODEC_ID_MPEG4:
2563         if (CONFIG_MPEG4_ENCODER)
2564             ff_mpeg4_encode_mb(s, s->block, motion_x, motion_y);
2565         break;
2566     case AV_CODEC_ID_MSMPEG4V2:
2567     case AV_CODEC_ID_MSMPEG4V3:
2568     case AV_CODEC_ID_WMV1:
2569         if (CONFIG_MSMPEG4_ENCODER)
2570             ff_msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
2571         break;
2572     case AV_CODEC_ID_WMV2:
2573         if (CONFIG_WMV2_ENCODER)
2574             ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
2575         break;
2576     case AV_CODEC_ID_H261:
2577         if (CONFIG_H261_ENCODER)
2578             ff_h261_encode_mb(s, s->block, motion_x, motion_y);
2579         break;
2580     case AV_CODEC_ID_H263:
2581     case AV_CODEC_ID_H263P:
2582     case AV_CODEC_ID_FLV1:
2583     case AV_CODEC_ID_RV10:
2584     case AV_CODEC_ID_RV20:
2585         if (CONFIG_H263_ENCODER)
2586             ff_h263_encode_mb(s, s->block, motion_x, motion_y);
2587         break;
2588     case AV_CODEC_ID_MJPEG:
2589     case AV_CODEC_ID_AMV:
2590         if (CONFIG_MJPEG_ENCODER)
2591             ff_mjpeg_encode_mb(s, s->block);
2592         break;
2593     default:
2594         av_assert1(0);
2595     }
2596 }
2597
2598 static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
2599 {
2600     if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 8, 6);
2601     else if (s->chroma_format == CHROMA_422) encode_mb_internal(s, motion_x, motion_y, 16, 8, 8);
2602     else encode_mb_internal(s, motion_x, motion_y, 16, 16, 12);
2603 }
2604
2605 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
2606     int i;
2607
2608     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
2609
2610     /* mpeg1 */
2611     d->mb_skip_run= s->mb_skip_run;
2612     for(i=0; i<3; i++)
2613         d->last_dc[i] = s->last_dc[i];
2614
2615     /* statistics */
2616     d->mv_bits= s->mv_bits;
2617     d->i_tex_bits= s->i_tex_bits;
2618     d->p_tex_bits= s->p_tex_bits;
2619     d->i_count= s->i_count;
2620     d->f_count= s->f_count;
2621     d->b_count= s->b_count;
2622     d->skip_count= s->skip_count;
2623     d->misc_bits= s->misc_bits;
2624     d->last_bits= 0;
2625
2626     d->mb_skipped= 0;
2627     d->qscale= s->qscale;
2628     d->dquant= s->dquant;
2629
2630     d->esc3_level_length= s->esc3_level_length;
2631 }
2632
2633 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
2634     int i;
2635
2636     memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
2637     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
2638
2639     /* mpeg1 */
2640     d->mb_skip_run= s->mb_skip_run;
2641     for(i=0; i<3; i++)
2642         d->last_dc[i] = s->last_dc[i];
2643
2644     /* statistics */
2645     d->mv_bits= s->mv_bits;
2646     d->i_tex_bits= s->i_tex_bits;
2647     d->p_tex_bits= s->p_tex_bits;
2648     d->i_count= s->i_count;
2649     d->f_count= s->f_count;
2650     d->b_count= s->b_count;
2651     d->skip_count= s->skip_count;
2652     d->misc_bits= s->misc_bits;
2653
2654     d->mb_intra= s->mb_intra;
2655     d->mb_skipped= s->mb_skipped;
2656     d->mv_type= s->mv_type;
2657     d->mv_dir= s->mv_dir;
2658     d->pb= s->pb;
2659     if(s->data_partitioning){
2660         d->pb2= s->pb2;
2661         d->tex_pb= s->tex_pb;
2662     }
2663     d->block= s->block;
2664     for(i=0; i<8; i++)
2665         d->block_last_index[i]= s->block_last_index[i];
2666     d->interlaced_dct= s->interlaced_dct;
2667     d->qscale= s->qscale;
2668
2669     d->esc3_level_length= s->esc3_level_length;
2670 }
2671
2672 static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
2673                            PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
2674                            int *dmin, int *next_block, int motion_x, int motion_y)
2675 {
2676     int score;
2677     uint8_t *dest_backup[3];
2678
2679     copy_context_before_encode(s, backup, type);
2680
2681     s->block= s->blocks[*next_block];
2682     s->pb= pb[*next_block];
2683     if(s->data_partitioning){
2684         s->pb2   = pb2   [*next_block];
2685         s->tex_pb= tex_pb[*next_block];
2686     }
2687
2688     if(*next_block){
2689         memcpy(dest_backup, s->dest, sizeof(s->dest));
2690         s->dest[0] = s->sc.rd_scratchpad;
2691         s->dest[1] = s->sc.rd_scratchpad + 16*s->linesize;
2692         s->dest[2] = s->sc.rd_scratchpad + 16*s->linesize + 8;
2693         av_assert0(s->linesize >= 32); //FIXME
2694     }
2695
2696     encode_mb(s, motion_x, motion_y);
2697
2698     score= put_bits_count(&s->pb);
2699     if(s->data_partitioning){
2700         score+= put_bits_count(&s->pb2);
2701         score+= put_bits_count(&s->tex_pb);
2702     }
2703
2704     if(s->avctx->mb_decision == FF_MB_DECISION_RD){
2705         ff_mpv_decode_mb(s, s->block);
2706
2707         score *= s->lambda2;
2708         score += sse_mb(s) << FF_LAMBDA_SHIFT;
2709     }
2710
2711     if(*next_block){
2712         memcpy(s->dest, dest_backup, sizeof(s->dest));
2713     }
2714
2715     if(score<*dmin){
2716         *dmin= score;
2717         *next_block^=1;
2718
2719         copy_context_after_encode(best, s, type);
2720     }
2721 }
2722
2723 static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
2724     uint32_t *sq = ff_square_tab + 256;
2725     int acc=0;
2726     int x,y;
2727
2728     if(w==16 && h==16)
2729         return s->mecc.sse[0](NULL, src1, src2, stride, 16);
2730     else if(w==8 && h==8)
2731         return s->mecc.sse[1](NULL, src1, src2, stride, 8);
2732
2733     for(y=0; y<h; y++){
2734         for(x=0; x<w; x++){
2735             acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
2736         }
2737     }
2738
2739     av_assert2(acc>=0);
2740
2741     return acc;
2742 }
2743
2744 static int sse_mb(MpegEncContext *s){
2745     int w= 16;
2746     int h= 16;
2747
2748     if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
2749     if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
2750
2751     if(w==16 && h==16)
2752       if(s->avctx->mb_cmp == FF_CMP_NSSE){
2753         return s->mecc.nsse[0](s, s->new_picture.f->data[0] + s->mb_x * 16 + s->mb_y * s->linesize   * 16, s->dest[0], s->linesize,   16) +
2754                s->mecc.nsse[1](s, s->new_picture.f->data[1] + s->mb_x *  8 + s->mb_y * s->uvlinesize *  8, s->dest[1], s->uvlinesize,  8) +
2755                s->mecc.nsse[1](s, s->new_picture.f->data[2] + s->mb_x *  8 + s->mb_y * s->uvlinesize *  8, s->dest[2], s->uvlinesize,  8);
2756       }else{
2757         return s->mecc.sse[0](NULL, s->new_picture.f->data[0] + s->mb_x * 16 + s->mb_y * s->linesize   * 16, s->dest[0], s->linesize,   16) +
2758                s->mecc.sse[1](NULL, s->new_picture.f->data[1] + s->mb_x *  8 + s->mb_y * s->uvlinesize *  8, s->dest[1], s->uvlinesize,  8) +
2759                s->mecc.sse[1](NULL, s->new_picture.f->data[2] + s->mb_x *  8 + s->mb_y * s->uvlinesize *  8, s->dest[2], s->uvlinesize,  8);
2760       }
2761     else
2762         return  sse(s, s->new_picture.f->data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], w, h, s->linesize)
2763                +sse(s, s->new_picture.f->data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], w>>1, h>>1, s->uvlinesize)
2764                +sse(s, s->new_picture.f->data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], w>>1, h>>1, s->uvlinesize);
2765 }
2766
2767 static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
2768     MpegEncContext *s= *(void**)arg;
2769
2770
2771     s->me.pre_pass=1;
2772     s->me.dia_size= s->avctx->pre_dia_size;
2773     s->first_slice_line=1;
2774     for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
2775         for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
2776             ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
2777         }
2778         s->first_slice_line=0;
2779     }
2780
2781     s->me.pre_pass=0;
2782
2783     return 0;
2784 }
2785
2786 static int estimate_motion_thread(AVCodecContext *c, void *arg){
2787     MpegEncContext *s= *(void**)arg;
2788
2789     ff_check_alignment();
2790
2791     s->me.dia_size= s->avctx->dia_size;
2792     s->first_slice_line=1;
2793     for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
2794         s->mb_x=0; //for block init below
2795         ff_init_block_index(s);
2796         for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
2797             s->block_index[0]+=2;
2798             s->block_index[1]+=2;
2799             s->block_index[2]+=2;
2800             s->block_index[3]+=2;
2801
2802             /* compute motion vector & mb_type and store in context */
2803             if(s->pict_type==AV_PICTURE_TYPE_B)
2804                 ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
2805             else
2806                 ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
2807         }
2808         s->first_slice_line=0;
2809     }
2810     return 0;
2811 }
2812
2813 static int mb_var_thread(AVCodecContext *c, void *arg){
2814     MpegEncContext *s= *(void**)arg;
2815     int mb_x, mb_y;
2816
2817     ff_check_alignment();
2818
2819     for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
2820         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
2821             int xx = mb_x * 16;
2822             int yy = mb_y * 16;
2823             uint8_t *pix = s->new_picture.f->data[0] + (yy * s->linesize) + xx;
2824             int varc;
2825             int sum = s->mpvencdsp.pix_sum(pix, s->linesize);
2826
2827             varc = (s->mpvencdsp.pix_norm1(pix, s->linesize) -
2828                     (((unsigned) sum * sum) >> 8) + 500 + 128) >> 8;
2829
2830             s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
2831             s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
2832             s->me.mb_var_sum_temp    += varc;
2833         }
2834     }
2835     return 0;
2836 }
2837
2838 static void write_slice_end(MpegEncContext *s){
2839     if(CONFIG_MPEG4_ENCODER && s->codec_id==AV_CODEC_ID_MPEG4){
2840         if(s->partitioned_frame){
2841             ff_mpeg4_merge_partitions(s);
2842         }
2843
2844         ff_mpeg4_stuffing(&s->pb);
2845     }else if(CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
2846         ff_mjpeg_encode_stuffing(s);
2847     }
2848
2849     avpriv_align_put_bits(&s->pb);
2850     flush_put_bits(&s->pb);
2851
2852     if ((s->avctx->flags & AV_CODEC_FLAG_PASS1) && !s->partitioned_frame)
2853         s->misc_bits+= get_bits_diff(s);
2854 }
2855
2856 static void write_mb_info(MpegEncContext *s)
2857 {
2858     uint8_t *ptr = s->mb_info_ptr + s->mb_info_size - 12;
2859     int offset = put_bits_count(&s->pb);
2860     int mba  = s->mb_x + s->mb_width * (s->mb_y % s->gob_index);
2861     int gobn = s->mb_y / s->gob_index;
2862     int pred_x, pred_y;
2863     if (CONFIG_H263_ENCODER)
2864         ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
2865     bytestream_put_le32(&ptr, offset);
2866     bytestream_put_byte(&ptr, s->qscale);
2867     bytestream_put_byte(&ptr, gobn);
2868     bytestream_put_le16(&ptr, mba);
2869     bytestream_put_byte(&ptr, pred_x); /* hmv1 */
2870     bytestream_put_byte(&ptr, pred_y); /* vmv1 */
2871     /* 4MV not implemented */
2872     bytestream_put_byte(&ptr, 0); /* hmv2 */
2873     bytestream_put_byte(&ptr, 0); /* vmv2 */
2874 }
2875
2876 static void update_mb_info(MpegEncContext *s, int startcode)
2877 {
2878     if (!s->mb_info)
2879         return;
2880     if (put_bits_count(&s->pb) - s->prev_mb_info*8 >= s->mb_info*8) {
2881         s->mb_info_size += 12;
2882         s->prev_mb_info = s->last_mb_info;
2883     }
2884     if (startcode) {
2885         s->prev_mb_info = put_bits_count(&s->pb)/8;
2886         /* This might have incremented mb_info_size above, and we return without
2887          * actually writing any info into that slot yet. But in that case,
2888          * this will be called again at the start of the after writing the
2889          * start code, actually writing the mb info. */
2890         return;
2891     }
2892
2893     s->last_mb_info = put_bits_count(&s->pb)/8;
2894     if (!s->mb_info_size)
2895         s->mb_info_size += 12;
2896     write_mb_info(s);
2897 }
2898
2899 int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t size_increase)
2900 {
2901     if (   s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < threshold
2902         && s->slice_context_count == 1
2903         && s->pb.buf == s->avctx->internal->byte_buffer) {
2904         int lastgob_pos = s->ptr_lastgob - s->pb.buf;
2905         int vbv_pos     = s->vbv_delay_ptr - s->pb.buf;
2906
2907         uint8_t *new_buffer = NULL;
2908         int new_buffer_size = 0;
2909
2910         if ((s->avctx->internal->byte_buffer_size + size_increase) >= INT_MAX/8) {
2911             av_log(s->avctx, AV_LOG_ERROR, "Cannot reallocate putbit buffer\n");
2912             return AVERROR(ENOMEM);
2913         }
2914
2915         av_fast_padded_malloc(&new_buffer, &new_buffer_size,
2916                               s->avctx->internal->byte_buffer_size + size_increase);
2917         if (!new_buffer)
2918             return AVERROR(ENOMEM);
2919
2920         memcpy(new_buffer, s->avctx->internal->byte_buffer, s->avctx->internal->byte_buffer_size);
2921         av_free(s->avctx->internal->byte_buffer);
2922         s->avctx->internal->byte_buffer      = new_buffer;
2923         s->avctx->internal->byte_buffer_size = new_buffer_size;
2924         rebase_put_bits(&s->pb, new_buffer, new_buffer_size);
2925         s->ptr_lastgob   = s->pb.buf + lastgob_pos;
2926         s->vbv_delay_ptr = s->pb.buf + vbv_pos;
2927     }
2928     if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < threshold)
2929         return AVERROR(EINVAL);
2930     return 0;
2931 }
2932
2933 static int encode_thread(AVCodecContext *c, void *arg){
2934     MpegEncContext *s= *(void**)arg;
2935     int mb_x, mb_y, pdif = 0;
2936     int chr_h= 16>>s->chroma_y_shift;
2937     int i, j;
2938     MpegEncContext best_s = { 0 }, backup_s;
2939     uint8_t bit_buf[2][MAX_MB_BYTES];
2940     uint8_t bit_buf2[2][MAX_MB_BYTES];
2941     uint8_t bit_buf_tex[2][MAX_MB_BYTES];
2942     PutBitContext pb[2], pb2[2], tex_pb[2];
2943
2944     ff_check_alignment();
2945
2946     for(i=0; i<2; i++){
2947         init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
2948         init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
2949         init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
2950     }
2951
2952     s->last_bits= put_bits_count(&s->pb);
2953     s->mv_bits=0;
2954     s->misc_bits=0;
2955     s->i_tex_bits=0;
2956     s->p_tex_bits=0;
2957     s->i_count=0;
2958     s->f_count=0;
2959     s->b_count=0;
2960     s->skip_count=0;
2961
2962     for(i=0; i<3; i++){
2963         /* init last dc values */
2964         /* note: quant matrix value (8) is implied here */
2965         s->last_dc[i] = 128 << s->intra_dc_precision;
2966
2967         s->current_picture.encoding_error[i] = 0;
2968     }
2969     if(s->codec_id==AV_CODEC_ID_AMV){
2970         s->last_dc[0] = 128*8/13;
2971         s->last_dc[1] = 128*8/14;
2972         s->last_dc[2] = 128*8/14;
2973     }
2974     s->mb_skip_run = 0;
2975     memset(s->last_mv, 0, sizeof(s->last_mv));
2976
2977     s->last_mv_dir = 0;
2978
2979     switch(s->codec_id){
2980     case AV_CODEC_ID_H263:
2981     case AV_CODEC_ID_H263P:
2982     case AV_CODEC_ID_FLV1:
2983         if (CONFIG_H263_ENCODER)
2984             s->gob_index = H263_GOB_HEIGHT(s->height);
2985         break;
2986     case AV_CODEC_ID_MPEG4:
2987         if(CONFIG_MPEG4_ENCODER && s->partitioned_frame)
2988             ff_mpeg4_init_partitions(s);
2989         break;
2990     }
2991
2992     s->resync_mb_x=0;
2993     s->resync_mb_y=0;
2994     s->first_slice_line = 1;
2995     s->ptr_lastgob = s->pb.buf;
2996     for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
2997         s->mb_x=0;
2998         s->mb_y= mb_y;
2999
3000         ff_set_qscale(s, s->qscale);
3001         ff_init_block_index(s);
3002
3003         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
3004             int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
3005             int mb_type= s->mb_type[xy];
3006 //            int d;
3007             int dmin= INT_MAX;
3008             int dir;
3009             int size_increase =  s->avctx->internal->byte_buffer_size/4
3010                                + s->mb_width*MAX_MB_BYTES;
3011
3012             ff_mpv_reallocate_putbitbuffer(s, MAX_MB_BYTES, size_increase);
3013             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
3014                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
3015                 return -1;
3016             }
3017             if(s->data_partitioning){
3018                 if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
3019                    || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
3020                     av_log(s->avctx, AV_LOG_ERROR, "encoded partitioned frame too large\n");
3021                     return -1;
3022                 }
3023             }
3024
3025             s->mb_x = mb_x;
3026             s->mb_y = mb_y;  // moved into loop, can get changed by H.261
3027             ff_update_block_index(s);
3028
3029             if(CONFIG_H261_ENCODER && s->codec_id == AV_CODEC_ID_H261){
3030                 ff_h261_reorder_mb_index(s);
3031                 xy= s->mb_y*s->mb_stride + s->mb_x;
3032                 mb_type= s->mb_type[xy];
3033             }
3034
3035             /* write gob / video packet header  */
3036             if(s->rtp_mode){
3037                 int current_packet_size, is_gob_start;
3038
3039                 current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
3040
3041                 is_gob_start = s->rtp_payload_size &&
3042                                current_packet_size >= s->rtp_payload_size &&
3043                                mb_y + mb_x > 0;
3044
3045                 if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
3046
3047                 switch(s->codec_id){
3048                 case AV_CODEC_ID_H263:
3049                 case AV_CODEC_ID_H263P:
3050                     if(!s->h263_slice_structured)
3051                         if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
3052                     break;
3053                 case AV_CODEC_ID_MPEG2VIDEO:
3054                     if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
3055                 case AV_CODEC_ID_MPEG1VIDEO:
3056                     if(s->mb_skip_run) is_gob_start=0;
3057                     break;
3058                 case AV_CODEC_ID_MJPEG:
3059                     if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
3060                     break;
3061                 }
3062
3063                 if(is_gob_start){
3064                     if(s->start_mb_y != mb_y || mb_x!=0){
3065                         write_slice_end(s);
3066
3067                         if(CONFIG_MPEG4_ENCODER && s->codec_id==AV_CODEC_ID_MPEG4 && s->partitioned_frame){
3068                             ff_mpeg4_init_partitions(s);
3069                         }
3070                     }
3071
3072                     av_assert2((put_bits_count(&s->pb)&7) == 0);
3073                     current_packet_size= put_bits_ptr(&s->pb) - s->ptr_lastgob;
3074
3075                     if (s->error_rate && s->resync_mb_x + s->resync_mb_y > 0) {
3076                         int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
3077                         int d = 100 / s->error_rate;
3078                         if(r % d == 0){
3079                             current_packet_size=0;
3080                             s->pb.buf_ptr= s->ptr_lastgob;
3081                             assert(put_bits_ptr(&s->pb) == s->ptr_lastgob);
3082                         }
3083                     }
3084
3085 #if FF_API_RTP_CALLBACK
3086 FF_DISABLE_DEPRECATION_WARNINGS
3087                     if (s->avctx->rtp_callback){
3088                         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
3089                         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
3090                     }
3091 FF_ENABLE_DEPRECATION_WARNINGS
3092 #endif
3093                     update_mb_info(s, 1);
3094
3095                     switch(s->codec_id){
3096                     case AV_CODEC_ID_MPEG4:
3097                         if (CONFIG_MPEG4_ENCODER) {
3098                             ff_mpeg4_encode_video_packet_header(s);
3099                             ff_mpeg4_clean_buffers(s);
3100                         }
3101                     break;
3102                     case AV_CODEC_ID_MPEG1VIDEO:
3103                     case AV_CODEC_ID_MPEG2VIDEO:
3104                         if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER) {
3105                             ff_mpeg1_encode_slice_header(s);
3106                             ff_mpeg1_clean_buffers(s);
3107                         }
3108                     break;
3109                     case AV_CODEC_ID_H263:
3110                     case AV_CODEC_ID_H263P:
3111                         if (CONFIG_H263_ENCODER)
3112                             ff_h263_encode_gob_header(s, mb_y);
3113                     break;
3114                     }
3115
3116                     if (s->avctx->flags & AV_CODEC_FLAG_PASS1) {
3117                         int bits= put_bits_count(&s->pb);
3118                         s->misc_bits+= bits - s->last_bits;
3119                         s->last_bits= bits;
3120                     }
3121
3122                     s->ptr_lastgob += current_packet_size;
3123                     s->first_slice_line=1;
3124                     s->resync_mb_x=mb_x;
3125                     s->resync_mb_y=mb_y;
3126                 }
3127             }
3128
3129             if(  (s->resync_mb_x   == s->mb_x)
3130                && s->resync_mb_y+1 == s->mb_y){
3131                 s->first_slice_line=0;
3132             }
3133
3134             s->mb_skipped=0;
3135             s->dquant=0; //only for QP_RD
3136
3137             update_mb_info(s, 0);
3138
3139             if (mb_type & (mb_type-1) || (s->mpv_flags & FF_MPV_FLAG_QP_RD)) { // more than 1 MB type possible or FF_MPV_FLAG_QP_RD
3140                 int next_block=0;
3141                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
3142
3143                 copy_context_before_encode(&backup_s, s, -1);
3144                 backup_s.pb= s->pb;
3145                 best_s.data_partitioning= s->data_partitioning;
3146                 best_s.partitioned_frame= s->partitioned_frame;
3147                 if(s->data_partitioning){
3148                     backup_s.pb2= s->pb2;
3149                     backup_s.tex_pb= s->tex_pb;
3150                 }
3151
3152                 if(mb_type&CANDIDATE_MB_TYPE_INTER){
3153                     s->mv_dir = MV_DIR_FORWARD;
3154                     s->mv_type = MV_TYPE_16X16;
3155                     s->mb_intra= 0;
3156                     s->mv[0][0][0] = s->p_mv_table[xy][0];
3157                     s->mv[0][0][1] = s->p_mv_table[xy][1];
3158                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
3159                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
3160                 }
3161                 if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
3162                     s->mv_dir = MV_DIR_FORWARD;
3163                     s->mv_type = MV_TYPE_FIELD;
3164                     s->mb_intra= 0;
3165                     for(i=0; i<2; i++){
3166                         j= s->field_select[0][i] = s->p_field_select_table[i][xy];
3167                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
3168                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
3169                     }
3170                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
3171                                  &dmin, &next_block, 0, 0);
3172                 }
3173                 if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
3174                     s->mv_dir = MV_DIR_FORWARD;
3175                     s->mv_type = MV_TYPE_16X16;
3176                     s->mb_intra= 0;
3177                     s->mv[0][0][0] = 0;
3178                     s->mv[0][0][1] = 0;
3179                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
3180                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
3181                 }
3182                 if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
3183                     s->mv_dir = MV_DIR_FORWARD;
3184                     s->mv_type = MV_TYPE_8X8;
3185                     s->mb_intra= 0;
3186                     for(i=0; i<4; i++){
3187                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
3188                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
3189                     }
3190                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
3191                                  &dmin, &next_block, 0, 0);
3192                 }
3193                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
3194                     s->mv_dir = MV_DIR_FORWARD;
3195                     s->mv_type = MV_TYPE_16X16;
3196                     s->mb_intra= 0;
3197                     s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
3198                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
3199                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
3200                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
3201                 }
3202                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
3203                     s->mv_dir = MV_DIR_BACKWARD;
3204                     s->mv_type = MV_TYPE_16X16;
3205                     s->mb_intra= 0;
3206                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
3207                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
3208                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
3209                                  &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
3210                 }
3211                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
3212                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
3213                     s->mv_type = MV_TYPE_16X16;
3214                     s->mb_intra= 0;
3215                     s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
3216                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
3217                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
3218                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
3219                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
3220                                  &dmin, &next_block, 0, 0);
3221                 }
3222                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
3223                     s->mv_dir = MV_DIR_FORWARD;
3224                     s->mv_type = MV_TYPE_FIELD;
3225                     s->mb_intra= 0;
3226                     for(i=0; i<2; i++){
3227                         j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
3228                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
3229                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
3230                     }
3231                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
3232                                  &dmin, &next_block, 0, 0);
3233                 }
3234                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
3235                     s->mv_dir = MV_DIR_BACKWARD;
3236                     s->mv_type = MV_TYPE_FIELD;
3237                     s->mb_intra= 0;
3238                     for(i=0; i<2; i++){
3239                         j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
3240                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
3241                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
3242                     }
3243                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
3244                                  &dmin, &next_block, 0, 0);
3245                 }
3246                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
3247                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
3248                     s->mv_type = MV_TYPE_FIELD;
3249                     s->mb_intra= 0;
3250                     for(dir=0; dir<2; dir++){
3251                         for(i=0; i<2; i++){
3252                             j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
3253                             s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
3254                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
3255                         }
3256                     }
3257                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
3258                                  &dmin, &next_block, 0, 0);
3259                 }
3260                 if(mb_type&CANDIDATE_MB_TYPE_INTRA){
3261                     s->mv_dir = 0;
3262                     s->mv_type = MV_TYPE_16X16;
3263                     s->mb_intra= 1;
3264                     s->mv[0][0][0] = 0;
3265                     s->mv[0][0][1] = 0;
3266                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
3267                                  &dmin, &next_block, 0, 0);
3268                     if(s->h263_pred || s->h263_aic){
3269                         if(best_s.mb_intra)
3270                             s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
3271                         else
3272                             ff_clean_intra_table_entries(s); //old mode?
3273                     }
3274                 }
3275
3276                 if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) && dmin < INT_MAX) {
3277                     if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
3278                         const int last_qp= backup_s.qscale;
3279                         int qpi, qp, dc[6];
3280                         int16_t ac[6][16];
3281                         const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
3282                         static const int dquant_tab[4]={-1,1,-2,2};
3283                         int storecoefs = s->mb_intra && s->dc_val[0];
3284
3285                         av_assert2(backup_s.dquant == 0);
3286
3287                         //FIXME intra
3288                         s->mv_dir= best_s.mv_dir;
3289                         s->mv_type = MV_TYPE_16X16;
3290                         s->mb_intra= best_s.mb_intra;
3291                         s->mv[0][0][0] = best_s.mv[0][0][0];
3292                         s->mv[0][0][1] = best_s.mv[0][0][1];
3293                         s->mv[1][0][0] = best_s.mv[1][0][0];
3294                         s->mv[1][0][1] = best_s.mv[1][0][1];
3295
3296                         qpi = s->pict_type == AV_PICTURE_TYPE_B ? 2 : 0;
3297                         for(; qpi<4; qpi++){
3298                             int dquant= dquant_tab[qpi];
3299                             qp= last_qp + dquant;
3300                             if(qp < s->avctx->qmin || qp > s->avctx->qmax)
3301                                 continue;
3302                             backup_s.dquant= dquant;
3303                             if(storecoefs){
3304                                 for(i=0; i<6; i++){
3305                                     dc[i]= s->dc_val[0][ s->block_index[i] ];
3306                                     memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(int16_t)*16);
3307                                 }
3308                             }
3309
3310                             encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
3311                                          &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
3312                             if(best_s.qscale != qp){
3313                                 if(storecoefs){
3314                                     for(i=0; i<6; i++){
3315                                         s->dc_val[0][ s->block_index[i] ]= dc[i];
3316                                         memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(int16_t)*16);
3317                                     }
3318                                 }
3319                             }
3320                         }
3321                     }
3322                 }
3323                 if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT){
3324                     int mx= s->b_direct_mv_table[xy][0];
3325                     int my= s->b_direct_mv_table[xy][1];
3326
3327                     backup_s.dquant = 0;
3328                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
3329                     s->mb_intra= 0;
3330                     ff_mpeg4_set_direct_mv(s, mx, my);
3331                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
3332                                  &dmin, &next_block, mx, my);
3333                 }
3334                 if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT0){
3335                     backup_s.dquant = 0;
3336                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
3337                     s->mb_intra= 0;
3338                     ff_mpeg4_set_direct_mv(s, 0, 0);
3339                     encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
3340                                  &dmin, &next_block, 0, 0);
3341                 }
3342                 if (!best_s.mb_intra && s->mpv_flags & FF_MPV_FLAG_SKIP_RD) {
3343                    &n