2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
23 #include "mpegvideo.h"
26 #include "fastmemcpy.h"
29 static void encode_picture(MpegEncContext *s, int picture_number);
30 static void dct_unquantize_mpeg1_c(MpegEncContext *s,
31 DCTELEM *block, int n, int qscale);
32 static void dct_unquantize_mpeg2_c(MpegEncContext *s,
33 DCTELEM *block, int n, int qscale);
34 static void dct_unquantize_h263_c(MpegEncContext *s,
35 DCTELEM *block, int n, int qscale);
36 static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w);
37 static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
39 int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow)= dct_quantize_c;
40 void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w)= draw_edges_c;
44 /* enable all paranoid tests for rounding, overflows, etc... */
50 /* for jpeg fast DCT */
53 static const unsigned short aanscales[64] = {
54 /* precomputed values scaled up by 14 bits */
55 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
56 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
57 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
58 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
59 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
60 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
61 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446,
62 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
65 static UINT8 h263_chroma_roundtab[16] = {
66 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
69 static UINT16 default_mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
70 static UINT8 default_fcode_tab[MAX_MV*2+1];
72 extern UINT8 zigzag_end[64];
74 /* default motion estimation */
75 int motion_estimation_method = ME_EPZS;
77 static void convert_matrix(int (*qmat)[64], uint16_t (*qmat16)[64], uint16_t (*qmat16_bias)[64],
78 const UINT16 *quant_matrix, int bias)
82 for(qscale=1; qscale<32; qscale++){
84 if (av_fdct == fdct_ifast) {
86 const int j= block_permute_op(i);
87 /* 16 <= qscale * quant_matrix[i] <= 7905 */
88 /* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
89 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
90 /* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
92 qmat[qscale][j] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) /
93 (aanscales[i] * qscale * quant_matrix[j]));
97 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
98 So 16 <= qscale * quant_matrix[i] <= 7905
99 so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
100 so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67
102 qmat [qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
103 qmat16[qscale][i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
105 if(qmat16[qscale][i]==0 || qmat16[qscale][i]==128*256) qmat16[qscale][i]=128*256-1;
107 qmat16_bias[qscale][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][i]);
112 // move into common.c perhaps
113 #define CHECKED_ALLOCZ(p, size)\
115 p= av_mallocz(size);\
122 /* init common structure for both encoder and decoder */
123 int MPV_common_init(MpegEncContext *s)
128 s->dct_unquantize_h263 = dct_unquantize_h263_c;
129 s->dct_unquantize_mpeg1 = dct_unquantize_mpeg1_c;
130 s->dct_unquantize_mpeg2 = dct_unquantize_mpeg2_c;
133 MPV_common_init_mmx(s);
136 MPV_common_init_axp(s);
138 //setup default unquantizers (mpeg4 might change it later)
139 if(s->out_format == FMT_H263)
140 s->dct_unquantize = s->dct_unquantize_h263;
142 s->dct_unquantize = s->dct_unquantize_mpeg1;
144 s->mb_width = (s->width + 15) / 16;
145 s->mb_height = (s->height + 15) / 16;
146 s->mb_num = s->mb_width * s->mb_height;
147 s->linesize = s->mb_width * 16 + 2 * EDGE_WIDTH;
150 int w, h, shift, pict_start;
153 h = s->mb_height * 16 + 2 * EDGE_WIDTH;
154 shift = (i == 0) ? 0 : 1;
155 c_size = (w >> shift) * (h >> shift);
156 pict_start = (w >> shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
158 CHECKED_ALLOCZ(pict, c_size)
159 s->last_picture_base[i] = pict;
160 s->last_picture[i] = pict + pict_start;
161 if(i>0) memset(s->last_picture_base[i], 128, c_size);
163 CHECKED_ALLOCZ(pict, c_size)
164 s->next_picture_base[i] = pict;
165 s->next_picture[i] = pict + pict_start;
166 if(i>0) memset(s->next_picture_base[i], 128, c_size);
168 if (s->has_b_frames || s->codec_id==CODEC_ID_MPEG4) {
169 /* Note the MPEG4 stuff is here cuz of buggy encoders which dont set the low_delay flag but
170 do low-delay encoding, so we cant allways distinguish b-frame containing streams from low_delay streams */
171 CHECKED_ALLOCZ(pict, c_size)
172 s->aux_picture_base[i] = pict;
173 s->aux_picture[i] = pict + pict_start;
174 if(i>0) memset(s->aux_picture_base[i], 128, c_size);
180 int mv_table_size= (s->mb_width+2)*(s->mb_height+2);
182 CHECKED_ALLOCZ(s->mb_var , s->mb_num * sizeof(INT16))
183 CHECKED_ALLOCZ(s->mc_mb_var, s->mb_num * sizeof(INT16))
185 /* Allocate MV tables */
186 CHECKED_ALLOCZ(s->p_mv_table , mv_table_size * 2 * sizeof(INT16))
187 CHECKED_ALLOCZ(s->b_forw_mv_table , mv_table_size * 2 * sizeof(INT16))
188 CHECKED_ALLOCZ(s->b_back_mv_table , mv_table_size * 2 * sizeof(INT16))
189 CHECKED_ALLOCZ(s->b_bidir_forw_mv_table , mv_table_size * 2 * sizeof(INT16))
190 CHECKED_ALLOCZ(s->b_bidir_back_mv_table , mv_table_size * 2 * sizeof(INT16))
191 CHECKED_ALLOCZ(s->b_direct_forw_mv_table, mv_table_size * 2 * sizeof(INT16))
192 CHECKED_ALLOCZ(s->b_direct_back_mv_table, mv_table_size * 2 * sizeof(INT16))
193 CHECKED_ALLOCZ(s->b_direct_mv_table , mv_table_size * 2 * sizeof(INT16))
195 CHECKED_ALLOCZ(s->me_scratchpad, s->linesize*16*3*sizeof(uint8_t))
197 CHECKED_ALLOCZ(s->me_map , ME_MAP_SIZE*sizeof(uint32_t))
198 CHECKED_ALLOCZ(s->me_score_map, ME_MAP_SIZE*sizeof(uint16_t))
201 for(j=0; j<REORDER_BUFFER_SIZE; j++){
207 h = s->mb_height * 16;
208 shift = (i == 0) ? 0 : 1;
209 c_size = (w >> shift) * (h >> shift);
211 CHECKED_ALLOCZ(pict, c_size);
212 s->picture_buffer[j][i] = pict;
217 if(s->codec_id==CODEC_ID_MPEG4){
218 CHECKED_ALLOCZ(s->tex_pb_buffer, PB_BUFFER_SIZE);
219 CHECKED_ALLOCZ( s->pb2_buffer, PB_BUFFER_SIZE);
223 if (s->out_format == FMT_H263 || s->encoding) {
225 /* Allocate MB type table */
226 CHECKED_ALLOCZ(s->mb_type , s->mb_num * sizeof(UINT8))
229 size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
230 CHECKED_ALLOCZ(s->motion_val, size * 2 * sizeof(INT16));
233 if (s->h263_pred || s->h263_plus) {
234 int y_size, c_size, i, size;
238 y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
239 c_size = (s->mb_width + 2) * (s->mb_height + 2);
240 size = y_size + 2 * c_size;
241 CHECKED_ALLOCZ(s->dc_val[0], size * sizeof(INT16));
242 s->dc_val[1] = s->dc_val[0] + y_size;
243 s->dc_val[2] = s->dc_val[1] + c_size;
245 s->dc_val[0][i] = 1024;
248 CHECKED_ALLOCZ(s->ac_val[0], size * sizeof(INT16) * 16);
249 s->ac_val[1] = s->ac_val[0] + y_size;
250 s->ac_val[2] = s->ac_val[1] + c_size;
253 CHECKED_ALLOCZ(s->coded_block, y_size);
255 /* which mb is a intra block */
256 CHECKED_ALLOCZ(s->mbintra_table, s->mb_num);
257 memset(s->mbintra_table, 1, s->mb_num);
259 /* divx501 bitstream reorder buffer */
260 CHECKED_ALLOCZ(s->bitstream_buffer, BITSTREAM_BUFFER_SIZE);
262 /* cbp, ac_pred, pred_dir */
263 CHECKED_ALLOCZ(s->cbp_table , s->mb_num * sizeof(UINT8))
264 CHECKED_ALLOCZ(s->pred_dir_table, s->mb_num * sizeof(UINT8))
266 CHECKED_ALLOCZ(s->qscale_table , s->mb_num * sizeof(UINT8))
268 /* default structure is frame */
269 s->picture_structure = PICT_FRAME;
271 /* init macroblock skip table */
272 CHECKED_ALLOCZ(s->mbskip_table, s->mb_num);
274 s->block= s->blocks[0];
276 s->context_initialized = 1;
286 /* init common structure for both encoder and decoder */
287 void MPV_common_end(MpegEncContext *s)
291 av_freep(&s->mb_type);
292 av_freep(&s->mb_var);
293 av_freep(&s->mc_mb_var);
294 av_freep(&s->p_mv_table);
295 av_freep(&s->b_forw_mv_table);
296 av_freep(&s->b_back_mv_table);
297 av_freep(&s->b_bidir_forw_mv_table);
298 av_freep(&s->b_bidir_back_mv_table);
299 av_freep(&s->b_direct_forw_mv_table);
300 av_freep(&s->b_direct_back_mv_table);
301 av_freep(&s->b_direct_mv_table);
302 av_freep(&s->motion_val);
303 av_freep(&s->dc_val[0]);
304 av_freep(&s->ac_val[0]);
305 av_freep(&s->coded_block);
306 av_freep(&s->mbintra_table);
307 av_freep(&s->cbp_table);
308 av_freep(&s->pred_dir_table);
309 av_freep(&s->qscale_table);
310 av_freep(&s->me_scratchpad);
311 av_freep(&s->me_map);
312 av_freep(&s->me_score_map);
314 av_freep(&s->mbskip_table);
315 av_freep(&s->bitstream_buffer);
316 av_freep(&s->tex_pb_buffer);
317 av_freep(&s->pb2_buffer);
320 av_freep(&s->last_picture_base[i]);
321 av_freep(&s->next_picture_base[i]);
322 av_freep(&s->aux_picture_base[i]);
323 for(j=0; j<REORDER_BUFFER_SIZE; j++){
324 av_freep(&s->picture_buffer[j][i]);
327 s->context_initialized = 0;
330 /* init video encoder */
331 int MPV_encode_init(AVCodecContext *avctx)
333 MpegEncContext *s = avctx->priv_data;
336 avctx->pix_fmt = PIX_FMT_YUV420P;
338 s->bit_rate = avctx->bit_rate;
339 s->bit_rate_tolerance = avctx->bit_rate_tolerance;
340 s->frame_rate = avctx->frame_rate;
341 s->width = avctx->width;
342 s->height = avctx->height;
343 if(avctx->gop_size > 600){
344 fprintf(stderr, "Warning keyframe interval too large! reducing it ...\n");
347 s->gop_size = avctx->gop_size;
348 s->rtp_mode = avctx->rtp_mode;
349 s->rtp_payload_size = avctx->rtp_payload_size;
350 if (avctx->rtp_callback)
351 s->rtp_callback = avctx->rtp_callback;
352 s->qmin= avctx->qmin;
353 s->qmax= avctx->qmax;
354 s->max_qdiff= avctx->max_qdiff;
355 s->qcompress= avctx->qcompress;
356 s->qblur= avctx->qblur;
357 s->b_quant_factor= avctx->b_quant_factor;
358 s->b_quant_offset= avctx->b_quant_offset;
360 s->aspect_ratio_info= avctx->aspect_ratio_info;
361 s->flags= avctx->flags;
362 s->max_b_frames= avctx->max_b_frames;
363 s->rc_strategy= avctx->rc_strategy;
364 s->b_frame_strategy= avctx->b_frame_strategy;
365 s->codec_id= avctx->codec->id;
366 s->luma_elim_threshold = avctx->luma_elim_threshold;
367 s->chroma_elim_threshold= avctx->chroma_elim_threshold;
368 s->strict_std_compliance= avctx->strict_std_compliance;
369 s->data_partitioning= avctx->flags & CODEC_FLAG_PART;
371 if (s->gop_size <= 1) {
379 if (avctx->me_method == 0)
380 /* For compatibility */
381 s->me_method = motion_estimation_method;
383 s->me_method = avctx->me_method;
386 s->fixed_qscale = (avctx->flags & CODEC_FLAG_QSCALE);
388 switch(avctx->codec->id) {
389 case CODEC_ID_MPEG1VIDEO:
390 s->out_format = FMT_MPEG1;
391 avctx->delay=0; //FIXME not sure, should check the spec
394 s->out_format = FMT_MJPEG;
395 s->intra_only = 1; /* force intra only for jpeg */
396 s->mjpeg_write_tables = 1; /* write all tables */
397 s->mjpeg_data_only_frames = 0; /* write all the needed headers */
398 s->mjpeg_vsample[0] = 2; /* set up default sampling factors */
399 s->mjpeg_vsample[1] = 1; /* the only currently supported values */
400 s->mjpeg_vsample[2] = 1;
401 s->mjpeg_hsample[0] = 2;
402 s->mjpeg_hsample[1] = 1;
403 s->mjpeg_hsample[2] = 1;
404 if (mjpeg_init(s) < 0)
409 if (h263_get_picture_format(s->width, s->height) == 7) {
410 printf("Input picture size isn't suitable for h263 codec! try h263+\n");
413 s->out_format = FMT_H263;
417 s->out_format = FMT_H263;
419 s->rtp_payload_size = 1200;
421 s->unrestricted_mv = 1;
424 /* These are just to be sure */
430 s->out_format = FMT_H263;
435 s->out_format = FMT_H263;
437 s->unrestricted_mv = 1;
438 s->has_b_frames= s->max_b_frames ? 1 : 0;
440 avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
442 case CODEC_ID_MSMPEG4V1:
443 s->out_format = FMT_H263;
446 s->unrestricted_mv = 1;
447 s->msmpeg4_version= 1;
450 case CODEC_ID_MSMPEG4V2:
451 s->out_format = FMT_H263;
454 s->unrestricted_mv = 1;
455 s->msmpeg4_version= 2;
458 case CODEC_ID_MSMPEG4V3:
459 s->out_format = FMT_H263;
462 s->unrestricted_mv = 1;
463 s->msmpeg4_version= 3;
467 s->out_format = FMT_H263;
470 s->unrestricted_mv = 1;
471 s->msmpeg4_version= 4;
475 s->out_format = FMT_H263;
478 s->unrestricted_mv = 1;
479 s->msmpeg4_version= 5;
486 { /* set up some save defaults, some codecs might override them later */
491 memset(default_mv_penalty, 0, sizeof(UINT16)*(MAX_FCODE+1)*(2*MAX_MV+1));
492 memset(default_fcode_tab , 0, sizeof(UINT8)*(2*MAX_MV+1));
494 for(i=-16; i<16; i++){
495 default_fcode_tab[i + MAX_MV]= 1;
499 s->mv_penalty= default_mv_penalty;
500 s->fcode_tab= default_fcode_tab;
502 s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
504 if (s->out_format == FMT_H263)
506 else if (s->out_format == FMT_MPEG1)
507 ff_mpeg1_encode_init(s);
508 if(s->msmpeg4_version)
509 ff_msmpeg4_encode_init(s);
511 /* dont use mv_penalty table for crap MV as it would be confused */
512 if (s->me_method < ME_EPZS) s->mv_penalty = default_mv_penalty;
517 if (MPV_common_init(s) < 0)
520 /* init default q matrix */
522 if(s->out_format == FMT_H263)
523 s->intra_matrix[i] = default_non_intra_matrix[i];
525 s->intra_matrix[i] = default_intra_matrix[i];
527 s->inter_matrix[i] = default_non_intra_matrix[i];
530 /* precompute matrix */
531 /* for mjpeg, we do include qscale in the matrix */
532 if (s->out_format != FMT_MJPEG) {
533 convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->q_intra_matrix16_bias,
534 s->intra_matrix, s->intra_quant_bias);
535 convert_matrix(s->q_inter_matrix, s->q_inter_matrix16, s->q_inter_matrix16_bias,
536 s->inter_matrix, s->inter_quant_bias);
539 if(ff_rate_control_init(s) < 0)
542 s->picture_number = 0;
543 s->picture_in_gop_number = 0;
544 s->fake_picture_number = 0;
545 /* motion detector init */
552 int MPV_encode_end(AVCodecContext *avctx)
554 MpegEncContext *s = avctx->priv_data;
560 ff_rate_control_uninit(s);
563 if (s->out_format == FMT_MJPEG)
569 /* draw the edges of width 'w' of an image of size width, height */
570 static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w)
572 UINT8 *ptr, *last_line;
575 last_line = buf + (height - 1) * wrap;
578 memcpy(buf - (i + 1) * wrap, buf, width);
579 memcpy(last_line + (i + 1) * wrap, last_line, width);
583 for(i=0;i<height;i++) {
584 memset(ptr - w, ptr[0], w);
585 memset(ptr + width, ptr[width-1], w);
590 memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
591 memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
592 memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
593 memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
597 /* generic function for encode/decode called before a frame is coded/decoded */
598 void MPV_frame_start(MpegEncContext *s)
606 if (s->pict_type == B_TYPE) {
608 s->current_picture[i] = s->aux_picture[i];
612 /* swap next and last */
613 tmp = s->last_picture[i];
614 s->last_picture[i] = s->next_picture[i];
615 s->next_picture[i] = tmp;
616 s->current_picture[i] = tmp;
621 /* generic function for encode/decode called after a frame has been coded/decoded */
622 void MPV_frame_end(MpegEncContext *s)
624 // if((s->picture_number%100)==0 && s->encoding) printf("sads:%d //\n", sads);
626 /* draw edge for correct motion prediction if outside */
627 if (s->pict_type != B_TYPE && !s->intra_only) {
628 if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4 || s->divx_version>=500){
629 draw_edges(s->current_picture[0], s->linesize, s->mb_width*16, s->mb_height*16, EDGE_WIDTH);
630 draw_edges(s->current_picture[1], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
631 draw_edges(s->current_picture[2], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
633 /* mpeg4? / opendivx / xvid */
634 draw_edges(s->current_picture[0], s->linesize, s->width, s->height, EDGE_WIDTH);
635 draw_edges(s->current_picture[1], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
636 draw_edges(s->current_picture[2], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
641 if(s->pict_type!=B_TYPE){
642 s->last_non_b_pict_type= s->pict_type;
643 s->last_non_b_qscale= s->qscale;
644 s->last_non_b_mc_mb_var= s->mc_mb_var_sum;
645 s->num_available_buffers++;
646 if(s->num_available_buffers>2) s->num_available_buffers= 2;
650 /* reorder input for encoding */
651 void reorder_input(MpegEncContext *s, AVPicture *pict)
655 if(s->max_b_frames > FF_MAX_B_FRAMES) s->max_b_frames= FF_MAX_B_FRAMES;
657 // delay= s->max_b_frames+1; (or 0 if no b frames cuz decoder diff)
659 for(j=0; j<REORDER_BUFFER_SIZE-1; j++){
660 s->coded_order[j]= s->coded_order[j+1];
662 s->coded_order[j].picture[0]= s->coded_order[j].picture[1]= s->coded_order[j].picture[2]= NULL; //catch uninitalized buffers
663 s->coded_order[j].pict_type=0;
665 switch(s->input_pict_type){
670 index= s->max_b_frames - s->b_frames_since_non_b;
671 s->b_frames_since_non_b=0;
674 index= s->max_b_frames + 1;
675 s->b_frames_since_non_b++;
678 //printf("index:%d type:%d strides: %d %d\n", index, s->input_pict_type, pict->linesize[0], s->linesize);
679 if( (index==0 || (s->flags&CODEC_FLAG_INPUT_PRESERVED))
680 && pict->linesize[0] == s->linesize
681 && pict->linesize[1] == s->linesize>>1
682 && pict->linesize[2] == s->linesize>>1){
685 s->coded_order[index].picture[i]= pict->data[i];
690 uint8_t *src = pict->data[i];
692 int src_wrap = pict->linesize[i];
693 int dest_wrap = s->linesize;
697 if(index==0) dest= s->last_picture[i]+16; //is current_picture indeed but the switch hapens after reordering
698 else dest= s->picture_buffer[s->picture_buffer_index][i];
706 s->coded_order[index].picture[i]= dest;
708 memcpy(dest, src, w);
714 s->picture_buffer_index++;
715 if(s->picture_buffer_index >= REORDER_BUFFER_SIZE-1) s->picture_buffer_index=0;
718 s->coded_order[index].pict_type = s->input_pict_type;
719 s->coded_order[index].qscale = s->input_qscale;
720 s->coded_order[index].force_type= s->force_input_type;
721 s->coded_order[index].picture_in_gop_number= s->input_picture_in_gop_number;
722 s->coded_order[index].picture_number= s->input_picture_number;
725 s->new_picture[i]= s->coded_order[0].picture[i];
729 int MPV_encode_picture(AVCodecContext *avctx,
730 unsigned char *buf, int buf_size, void *data)
732 MpegEncContext *s = avctx->priv_data;
733 AVPicture *pict = data;
735 s->input_qscale = avctx->quality;
737 init_put_bits(&s->pb, buf, buf_size, NULL, NULL);
739 if(avctx->flags&CODEC_FLAG_TYPE){
741 s->force_input_type= avctx->key_frame ? I_TYPE : P_TYPE;
742 }else if(s->flags&CODEC_FLAG_PASS2){
744 s->force_input_type= s->rc_context.entry[s->input_picture_number].new_pict_type;
746 s->force_input_type=0;
747 if (!s->intra_only) {
748 /* first picture of GOP is intra */
749 if (s->input_picture_in_gop_number % s->gop_size==0){
750 s->input_pict_type = I_TYPE;
751 }else if(s->max_b_frames==0){
752 s->input_pict_type = P_TYPE;
754 if(s->b_frames_since_non_b < s->max_b_frames) //FIXME more IQ
755 s->input_pict_type = B_TYPE;
757 s->input_pict_type = P_TYPE;
760 s->input_pict_type = I_TYPE;
764 if(s->input_pict_type==I_TYPE)
765 s->input_picture_in_gop_number=0;
767 reorder_input(s, pict);
770 if(s->coded_order[0].picture[0]){
772 s->pict_type= s->coded_order[0].pict_type;
773 if (s->fixed_qscale) /* the ratecontrol needs the last qscale so we dont touch it for CBR */
774 s->qscale= s->coded_order[0].qscale;
775 s->force_type= s->coded_order[0].force_type;
776 s->picture_in_gop_number= s->coded_order[0].picture_in_gop_number;
777 s->picture_number= s->coded_order[0].picture_number;
781 encode_picture(s, s->picture_number);
782 avctx->key_frame = (s->pict_type == I_TYPE);
783 avctx->pict_type = s->pict_type;
784 avctx->real_pict_num = s->picture_number;
785 avctx->header_bits = s->header_bits;
786 avctx->mv_bits = s->mv_bits;
787 avctx->misc_bits = s->misc_bits;
788 avctx->i_tex_bits = s->i_tex_bits;
789 avctx->p_tex_bits = s->p_tex_bits;
790 avctx->i_count = s->i_count;
791 avctx->p_count = s->p_count;
792 avctx->skip_count = s->skip_count;
796 if (s->out_format == FMT_MJPEG)
797 mjpeg_picture_trailer(s);
799 avctx->quality = s->qscale;
801 if(s->flags&CODEC_FLAG_PASS1)
802 ff_write_pass1_stats(s);
806 s->input_picture_number++;
807 s->input_picture_in_gop_number++;
809 flush_put_bits(&s->pb);
810 s->frame_bits = (pbBufPtr(&s->pb) - s->pb.buf) * 8;
811 if(s->pict_type==B_TYPE) s->pb_frame_bits+= s->frame_bits;
812 else s->pb_frame_bits= s->frame_bits;
814 s->total_bits += s->frame_bits;
815 avctx->frame_bits = s->frame_bits;
816 //printf("fcode: %d, type: %d, head: %d, mv: %d, misc: %d, frame: %d, itex: %d, ptex: %d\n",
817 //s->f_code, avctx->key_frame, s->header_bits, s->mv_bits, s->misc_bits, s->frame_bits, s->i_tex_bits, s->p_tex_bits);
819 if (avctx->get_psnr) {
820 /* At this point pict->data should have the original frame */
821 /* an s->current_picture should have the coded/decoded frame */
822 get_psnr(pict->data, s->current_picture,
823 pict->linesize, s->linesize, avctx);
824 // printf("%f\n", avctx->psnr_y);
826 return pbBufPtr(&s->pb) - s->pb.buf;
829 static inline void gmc1_motion(MpegEncContext *s,
830 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
832 UINT8 **ref_picture, int src_offset,
836 int offset, src_x, src_y, linesize;
837 int motion_x, motion_y;
839 if(s->real_sprite_warping_points>1) printf("more than 1 warp point isnt supported\n");
840 motion_x= s->sprite_offset[0][0];
841 motion_y= s->sprite_offset[0][1];
842 src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
843 src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
844 motion_x<<=(3-s->sprite_warping_accuracy);
845 motion_y<<=(3-s->sprite_warping_accuracy);
846 src_x = clip(src_x, -16, s->width);
847 if (src_x == s->width)
849 src_y = clip(src_y, -16, s->height);
850 if (src_y == s->height)
853 linesize = s->linesize;
854 ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
857 gmc1(dest_y , ptr , linesize, h, motion_x&15, motion_y&15, s->no_rounding);
858 gmc1(dest_y+8, ptr+8, linesize, h, motion_x&15, motion_y&15, s->no_rounding);
860 motion_x= s->sprite_offset[1][0];
861 motion_y= s->sprite_offset[1][1];
862 src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
863 src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
864 motion_x<<=(3-s->sprite_warping_accuracy);
865 motion_y<<=(3-s->sprite_warping_accuracy);
866 src_x = clip(src_x, -8, s->width>>1);
867 if (src_x == s->width>>1)
869 src_y = clip(src_y, -8, s->height>>1);
870 if (src_y == s->height>>1)
873 offset = (src_y * linesize>>1) + src_x + (src_offset>>1);
874 ptr = ref_picture[1] + offset;
875 gmc1(dest_cb + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
876 ptr = ref_picture[2] + offset;
877 gmc1(dest_cr + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
882 /* apply one mpeg motion vector to the three components */
883 static inline void mpeg_motion(MpegEncContext *s,
884 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
886 UINT8 **ref_picture, int src_offset,
887 int field_based, op_pixels_func *pix_op,
888 int motion_x, int motion_y, int h)
891 int dxy, offset, mx, my, src_x, src_y, height, linesize;
892 if(s->quarter_sample)
897 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
898 src_x = s->mb_x * 16 + (motion_x >> 1);
899 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 1);
901 /* WARNING: do no forget half pels */
902 height = s->height >> field_based;
903 src_x = clip(src_x, -16, s->width);
904 if (src_x == s->width)
906 src_y = clip(src_y, -16, height);
909 linesize = s->linesize << field_based;
910 ptr = ref_picture[0] + (src_y * linesize) + (src_x) + src_offset;
911 dest_y += dest_offset;
912 pix_op[dxy](dest_y, ptr, linesize, h);
913 pix_op[dxy](dest_y + 8, ptr + 8, linesize, h);
915 if(s->flags&CODEC_FLAG_GRAY) return;
917 if (s->out_format == FMT_H263) {
919 if ((motion_x & 3) != 0)
921 if ((motion_y & 3) != 0)
928 dxy = ((my & 1) << 1) | (mx & 1);
933 src_x = s->mb_x * 8 + mx;
934 src_y = s->mb_y * (8 >> field_based) + my;
935 src_x = clip(src_x, -8, s->width >> 1);
936 if (src_x == (s->width >> 1))
938 src_y = clip(src_y, -8, height >> 1);
939 if (src_y == (height >> 1))
942 offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
943 ptr = ref_picture[1] + offset;
944 pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
945 ptr = ref_picture[2] + offset;
946 pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
949 static inline void qpel_motion(MpegEncContext *s,
950 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
952 UINT8 **ref_picture, int src_offset,
953 int field_based, op_pixels_func *pix_op,
954 qpel_mc_func *qpix_op,
955 int motion_x, int motion_y, int h)
958 int dxy, offset, mx, my, src_x, src_y, height, linesize;
960 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
961 src_x = s->mb_x * 16 + (motion_x >> 2);
962 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
964 height = s->height >> field_based;
965 src_x = clip(src_x, -16, s->width);
966 if (src_x == s->width)
968 src_y = clip(src_y, -16, height);
971 linesize = s->linesize << field_based;
972 ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
973 dest_y += dest_offset;
974 //printf("%d %d %d\n", src_x, src_y, dxy);
975 qpix_op[dxy](dest_y , ptr , linesize, linesize, motion_x&3, motion_y&3);
976 qpix_op[dxy](dest_y + 8, ptr + 8, linesize, linesize, motion_x&3, motion_y&3);
977 qpix_op[dxy](dest_y + linesize*8 , ptr + linesize*8 , linesize, linesize, motion_x&3, motion_y&3);
978 qpix_op[dxy](dest_y + linesize*8 + 8, ptr + linesize*8 + 8, linesize, linesize, motion_x&3, motion_y&3);
980 if(s->flags&CODEC_FLAG_GRAY) return;
982 mx= (motion_x>>1) | (motion_x&1);
983 my= (motion_y>>1) | (motion_y&1);
993 src_x = s->mb_x * 8 + mx;
994 src_y = s->mb_y * (8 >> field_based) + my;
995 src_x = clip(src_x, -8, s->width >> 1);
996 if (src_x == (s->width >> 1))
998 src_y = clip(src_y, -8, height >> 1);
999 if (src_y == (height >> 1))
1002 offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
1003 ptr = ref_picture[1] + offset;
1004 pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
1005 ptr = ref_picture[2] + offset;
1006 pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
1010 static inline void MPV_motion(MpegEncContext *s,
1011 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
1012 int dir, UINT8 **ref_picture,
1013 op_pixels_func *pix_op, qpel_mc_func *qpix_op)
1015 int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y;
1022 switch(s->mv_type) {
1026 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
1029 s->sprite_offset[0][0]>>3,
1030 s->sprite_offset[0][1]>>3,
1033 gmc1_motion(s, dest_y, dest_cb, dest_cr, 0,
1037 }else if(s->quarter_sample && dir==0){ //FIXME
1038 qpel_motion(s, dest_y, dest_cb, dest_cr, 0,
1041 s->mv[dir][0][0], s->mv[dir][0][1], 16);
1043 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
1046 s->mv[dir][0][0], s->mv[dir][0][1], 16);
1051 motion_x = s->mv[dir][i][0];
1052 motion_y = s->mv[dir][i][1];
1054 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
1055 src_x = mb_x * 16 + (motion_x >> 1) + (i & 1) * 8;
1056 src_y = mb_y * 16 + (motion_y >> 1) + (i >>1) * 8;
1058 /* WARNING: do no forget half pels */
1059 src_x = clip(src_x, -16, s->width);
1060 if (src_x == s->width)
1062 src_y = clip(src_y, -16, s->height);
1063 if (src_y == s->height)
1066 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
1067 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
1068 pix_op[dxy](dest, ptr, s->linesize, 8);
1071 if(s->flags&CODEC_FLAG_GRAY) break;
1072 /* In case of 8X8, we construct a single chroma motion vector
1073 with a special rounding */
1077 mx += s->mv[dir][i][0];
1078 my += s->mv[dir][i][1];
1081 mx = (h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
1084 mx = -(h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
1087 my = (h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
1090 my = -(h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
1092 dxy = ((my & 1) << 1) | (mx & 1);
1096 src_x = mb_x * 8 + mx;
1097 src_y = mb_y * 8 + my;
1098 src_x = clip(src_x, -8, s->width/2);
1099 if (src_x == s->width/2)
1101 src_y = clip(src_y, -8, s->height/2);
1102 if (src_y == s->height/2)
1105 offset = (src_y * (s->linesize >> 1)) + src_x;
1106 ptr = ref_picture[1] + offset;
1107 pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8);
1108 ptr = ref_picture[2] + offset;
1109 pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8);
1112 if (s->picture_structure == PICT_FRAME) {
1114 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
1115 ref_picture, s->field_select[dir][0] ? s->linesize : 0,
1117 s->mv[dir][0][0], s->mv[dir][0][1], 8);
1119 mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
1120 ref_picture, s->field_select[dir][1] ? s->linesize : 0,
1122 s->mv[dir][1][0], s->mv[dir][1][1], 8);
1132 /* put block[] to dest[] */
1133 static inline void put_dct(MpegEncContext *s,
1134 DCTELEM *block, int i, UINT8 *dest, int line_size)
1137 s->dct_unquantize(s, block, i, s->qscale);
1138 ff_idct_put (dest, line_size, block);
1141 /* add block[] to dest[] */
1142 static inline void add_dct(MpegEncContext *s,
1143 DCTELEM *block, int i, UINT8 *dest, int line_size)
1145 if (s->block_last_index[i] >= 0) {
1146 ff_idct_add (dest, line_size, block);
1150 static inline void add_dequant_dct(MpegEncContext *s,
1151 DCTELEM *block, int i, UINT8 *dest, int line_size)
1153 if (s->block_last_index[i] >= 0) {
1154 s->dct_unquantize(s, block, i, s->qscale);
1156 ff_idct_add (dest, line_size, block);
1161 * cleans dc, ac, coded_block for the current non intra MB
1163 void ff_clean_intra_table_entries(MpegEncContext *s)
1165 int wrap = s->block_wrap[0];
1166 int xy = s->block_index[0];
1169 s->dc_val[0][xy + 1 ] =
1170 s->dc_val[0][xy + wrap] =
1171 s->dc_val[0][xy + 1 + wrap] = 1024;
1173 memset(s->ac_val[0][xy ], 0, 32 * sizeof(INT16));
1174 memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(INT16));
1175 if (s->msmpeg4_version>=3) {
1176 s->coded_block[xy ] =
1177 s->coded_block[xy + 1 ] =
1178 s->coded_block[xy + wrap] =
1179 s->coded_block[xy + 1 + wrap] = 0;
1182 wrap = s->block_wrap[4];
1183 xy = s->mb_x + 1 + (s->mb_y + 1) * wrap;
1185 s->dc_val[2][xy] = 1024;
1187 memset(s->ac_val[1][xy], 0, 16 * sizeof(INT16));
1188 memset(s->ac_val[2][xy], 0, 16 * sizeof(INT16));
1190 s->mbintra_table[s->mb_x + s->mb_y*s->mb_width]= 0;
1193 /* generic function called after a macroblock has been parsed by the
1194 decoder or after it has been encoded by the encoder.
1196 Important variables used:
1197 s->mb_intra : true if intra macroblock
1198 s->mv_dir : motion vector direction
1199 s->mv_type : motion vector type
1200 s->mv : motion vector
1201 s->interlaced_dct : true if interlaced dct used (mpeg2)
1203 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
1206 const int mb_xy = s->mb_y * s->mb_width + s->mb_x;
1211 #ifdef FF_POSTPROCESS
1212 /* Obsolete. Exists for compatibility with mplayer only. */
1213 quant_store[mb_y][mb_x]=s->qscale;
1214 //printf("[%02d][%02d] %d\n",mb_x,mb_y,s->qscale);
1216 if(s->avctx->quant_store) s->avctx->quant_store[mb_y*s->avctx->qstride+mb_x] = s->qscale;
1219 /* update DC predictors for P macroblocks */
1221 if (s->h263_pred || s->h263_aic) {
1222 if(s->mbintra_table[mb_xy])
1223 ff_clean_intra_table_entries(s);
1227 s->last_dc[2] = 128 << s->intra_dc_precision;
1230 else if (s->h263_pred || s->h263_aic)
1231 s->mbintra_table[mb_xy]=1;
1233 /* update motion predictor, not for B-frames as they need the motion_val from the last P/S-Frame */
1234 if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE) { //FIXME move into h263.c if possible, format specific stuff shouldnt be here
1235 int motion_x, motion_y;
1237 const int wrap = s->block_wrap[0];
1238 const int xy = s->block_index[0];
1243 } else if (s->mv_type == MV_TYPE_16X16) {
1244 motion_x = s->mv[0][0][0];
1245 motion_y = s->mv[0][0][1];
1247 /* no update if 8X8 because it has been done during parsing */
1248 s->motion_val[xy][0] = motion_x;
1249 s->motion_val[xy][1] = motion_y;
1250 s->motion_val[xy + 1][0] = motion_x;
1251 s->motion_val[xy + 1][1] = motion_y;
1252 s->motion_val[xy + wrap][0] = motion_x;
1253 s->motion_val[xy + wrap][1] = motion_y;
1254 s->motion_val[xy + 1 + wrap][0] = motion_x;
1255 s->motion_val[xy + 1 + wrap][1] = motion_y;
1259 if (!(s->encoding && (s->intra_only || s->pict_type==B_TYPE))) {
1260 UINT8 *dest_y, *dest_cb, *dest_cr;
1261 int dct_linesize, dct_offset;
1262 op_pixels_func *op_pix;
1263 qpel_mc_func *op_qpix;
1265 /* avoid copy if macroblock skipped in last frame too
1266 dont touch it for B-frames as they need the skip info from the next p-frame */
1267 if (s->pict_type != B_TYPE) {
1268 UINT8 *mbskip_ptr = &s->mbskip_table[mb_xy];
1271 /* if previous was skipped too, then nothing to do !
1272 skip only during decoding as we might trash the buffers during encoding a bit */
1273 if (*mbskip_ptr != 0 && !s->encoding)
1275 *mbskip_ptr = 1; /* indicate that this time we skiped it */
1277 *mbskip_ptr = 0; /* not skipped */
1281 dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize) + mb_x * 16;
1282 dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
1283 dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
1285 if (s->interlaced_dct) {
1286 dct_linesize = s->linesize * 2;
1287 dct_offset = s->linesize;
1289 dct_linesize = s->linesize;
1290 dct_offset = s->linesize * 8;
1294 /* motion handling */
1295 /* decoding or more than one mb_type (MC was allready done otherwise) */
1296 if((!s->encoding) || (s->mb_type[mb_xy]&(s->mb_type[mb_xy]-1))){
1297 if ((!s->no_rounding) || s->pict_type==B_TYPE){
1298 op_pix = put_pixels_tab;
1299 op_qpix= qpel_mc_rnd_tab;
1301 op_pix = put_no_rnd_pixels_tab;
1302 op_qpix= qpel_mc_no_rnd_tab;
1305 if (s->mv_dir & MV_DIR_FORWARD) {
1306 MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture, op_pix, op_qpix);
1307 if ((!s->no_rounding) || s->pict_type==B_TYPE)
1308 op_pix = avg_pixels_tab;
1310 op_pix = avg_no_rnd_pixels_tab;
1312 if (s->mv_dir & MV_DIR_BACKWARD) {
1313 MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix, op_qpix);
1317 /* skip dequant / idct if we are really late ;) */
1318 if(s->hurry_up>1) goto the_end;
1320 /* add dct residue */
1321 if(!s->mpeg2 && (s->encoding || (!s->h263_msmpeg4))){
1322 add_dequant_dct(s, block[0], 0, dest_y, dct_linesize);
1323 add_dequant_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1324 add_dequant_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1325 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1327 if(!(s->flags&CODEC_FLAG_GRAY)){
1328 add_dequant_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1329 add_dequant_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
1332 add_dct(s, block[0], 0, dest_y, dct_linesize);
1333 add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1334 add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1335 add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1337 if(!(s->flags&CODEC_FLAG_GRAY)){
1338 add_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1339 add_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
1343 /* dct only in intra block */
1344 put_dct(s, block[0], 0, dest_y, dct_linesize);
1345 put_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1346 put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1347 put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1349 if(!(s->flags&CODEC_FLAG_GRAY)){
1350 put_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1351 put_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
1356 emms_c(); //FIXME remove
1359 static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold, int skip_dc)
1361 static const char tab[64]=
1373 DCTELEM *block= s->block[n];
1374 const int last_index= s->block_last_index[n];
1376 if(skip_dc) skip_dc=1;
1378 /* are all which we could set to zero are allready zero? */
1379 if(last_index<=skip_dc - 1) return;
1381 for(i=0; i<=last_index; i++){
1382 const int j = zigzag_direct[i];
1383 const int level = ABS(block[j]);
1385 if(skip_dc && i==0) continue;
1394 if(score >= threshold) return;
1395 for(i=skip_dc; i<=last_index; i++){
1396 const int j = zigzag_direct[i];
1399 if(block[0]) s->block_last_index[n]= 0;
1400 else s->block_last_index[n]= -1;
1403 static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index)
1406 const int maxlevel= s->max_qcoeff;
1407 const int minlevel= s->min_qcoeff;
1409 for(i=0;i<=last_index; i++){
1410 const int j = zigzag_direct[i];
1411 int level = block[j];
1413 if (level>maxlevel) level=maxlevel;
1414 else if(level<minlevel) level=minlevel;
1419 static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
1421 const int mb_x= s->mb_x;
1422 const int mb_y= s->mb_y;
1426 if (s->interlaced_dct) {
1427 dct_linesize = s->linesize * 2;
1428 dct_offset = s->linesize;
1430 dct_linesize = s->linesize;
1431 dct_offset = s->linesize * 8;
1434 for(i=0; i<6; i++) skip_dct[i]=0;
1441 ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
1442 get_pixels(s->block[0], ptr , wrap);
1443 get_pixels(s->block[1], ptr + 8, wrap);
1444 get_pixels(s->block[2], ptr + 8 * wrap , wrap);
1445 get_pixels(s->block[3], ptr + 8 * wrap + 8, wrap);
1447 if(s->flags&CODEC_FLAG_GRAY){
1452 ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
1453 get_pixels(s->block[4], ptr, wrap);
1455 ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
1456 get_pixels(s->block[5], ptr, wrap);
1459 op_pixels_func *op_pix;
1460 qpel_mc_func *op_qpix;
1461 UINT8 *dest_y, *dest_cb, *dest_cr;
1462 UINT8 *ptr_y, *ptr_cb, *ptr_cr;
1465 dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize ) + mb_x * 16;
1466 dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
1467 dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
1468 wrap_y = s->linesize;
1470 ptr_y = s->new_picture[0] + (mb_y * 16 * wrap_y) + mb_x * 16;
1471 ptr_cb = s->new_picture[1] + (mb_y * 8 * wrap_c) + mb_x * 8;
1472 ptr_cr = s->new_picture[2] + (mb_y * 8 * wrap_c) + mb_x * 8;
1474 if ((!s->no_rounding) || s->pict_type==B_TYPE){
1475 op_pix = put_pixels_tab;
1476 op_qpix= qpel_mc_rnd_tab;
1478 op_pix = put_no_rnd_pixels_tab;
1479 op_qpix= qpel_mc_no_rnd_tab;
1482 if (s->mv_dir & MV_DIR_FORWARD) {
1483 MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture, op_pix, op_qpix);
1484 if ((!s->no_rounding) || s->pict_type==B_TYPE)
1485 op_pix = avg_pixels_tab;
1487 op_pix = avg_no_rnd_pixels_tab;
1489 if (s->mv_dir & MV_DIR_BACKWARD) {
1490 MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix, op_qpix);
1493 diff_pixels(s->block[0], ptr_y , dest_y , wrap_y);
1494 diff_pixels(s->block[1], ptr_y + 8, dest_y + 8, wrap_y);
1495 diff_pixels(s->block[2], ptr_y + 8 * wrap_y , dest_y + 8 * wrap_y , wrap_y);
1496 diff_pixels(s->block[3], ptr_y + 8 * wrap_y + 8, dest_y + 8 * wrap_y + 8, wrap_y);
1498 if(s->flags&CODEC_FLAG_GRAY){
1502 diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
1503 diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
1506 /* pre quantization */
1507 if(s->mc_mb_var[s->mb_width*mb_y+ mb_x]<2*s->qscale*s->qscale){
1508 if(pix_abs8x8(ptr_y , dest_y , wrap_y) < 20*s->qscale) skip_dct[0]= 1;
1509 if(pix_abs8x8(ptr_y + 8, dest_y + 8, wrap_y) < 20*s->qscale) skip_dct[1]= 1;
1510 if(pix_abs8x8(ptr_y + 8*wrap_y , dest_y + 8*wrap_y , wrap_y) < 20*s->qscale) skip_dct[2]= 1;
1511 if(pix_abs8x8(ptr_y + 8*wrap_y + 8, dest_y + 8*wrap_y + 8, wrap_y) < 20*s->qscale) skip_dct[3]= 1;
1512 if(pix_abs8x8(ptr_cb , dest_cb , wrap_y) < 20*s->qscale) skip_dct[4]= 1;
1513 if(pix_abs8x8(ptr_cr , dest_cr , wrap_y) < 20*s->qscale) skip_dct[5]= 1;
1519 if(skip_dct[i]) num++;
1522 if(s->mb_x==0 && s->mb_y==0){
1524 printf("%6d %1d\n", stat[i], i);
1537 adap_parm = ((s->avg_mb_var << 1) + s->mb_var[s->mb_width*mb_y+mb_x] + 1.0) /
1538 ((s->mb_var[s->mb_width*mb_y+mb_x] << 1) + s->avg_mb_var + 1.0);
1540 printf("\ntype=%c qscale=%2d adap=%0.2f dquant=%4.2f var=%4d avgvar=%4d",
1541 (s->mb_type[s->mb_width*mb_y+mb_x] > 0) ? 'I' : 'P',
1542 s->qscale, adap_parm, s->qscale*adap_parm,
1543 s->mb_var[s->mb_width*mb_y+mb_x], s->avg_mb_var);
1546 /* DCT & quantize */
1547 if(s->out_format==FMT_MJPEG){
1550 s->block_last_index[i] = dct_quantize(s, s->block[i], i, 8, &overflow);
1551 if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
1557 s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale, &overflow);
1558 // FIXME we could decide to change to quantizer instead of clipping
1559 // JS: I don't think that would be a good idea it could lower quality instead
1560 // of improve it. Just INTRADC clipping deserves changes in quantizer
1561 if (overflow) clip_coeffs(s, s->block[i], s->block_last_index[i]);
1563 s->block_last_index[i]= -1;
1565 if(s->luma_elim_threshold && !s->mb_intra)
1567 dct_single_coeff_elimination(s, i, s->luma_elim_threshold, 0);
1568 if(s->chroma_elim_threshold && !s->mb_intra)
1570 dct_single_coeff_elimination(s, i, s->chroma_elim_threshold, 1);
1573 if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
1574 s->block_last_index[4]=
1575 s->block_last_index[5]= 0;
1577 s->block[5][0]= 128;
1580 /* huffman encode */
1581 switch(s->out_format) {
1583 mpeg1_encode_mb(s, s->block, motion_x, motion_y);
1586 if (s->h263_msmpeg4)
1587 msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
1588 else if(s->h263_pred)
1589 mpeg4_encode_mb(s, s->block, motion_x, motion_y);
1591 h263_encode_mb(s, s->block, motion_x, motion_y);
1594 mjpeg_encode_mb(s, s->block);
1599 void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length)
1601 int bytes= length>>4;
1602 int bits= length&15;
1605 if(length==0) return;
1607 for(i=0; i<bytes; i++) put_bits(pb, 16, be2me_16(((uint16_t*)src)[i]));
1608 put_bits(pb, bits, be2me_16(((uint16_t*)src)[i])>>(16-bits));
1611 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
1614 memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1617 d->mb_incr= s->mb_incr;
1619 d->last_dc[i]= s->last_dc[i];
1622 d->mv_bits= s->mv_bits;
1623 d->i_tex_bits= s->i_tex_bits;
1624 d->p_tex_bits= s->p_tex_bits;
1625 d->i_count= s->i_count;
1626 d->p_count= s->p_count;
1627 d->skip_count= s->skip_count;
1628 d->misc_bits= s->misc_bits;
1631 d->mb_skiped= s->mb_skiped;
1634 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
1637 memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
1638 memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
1641 d->mb_incr= s->mb_incr;
1643 d->last_dc[i]= s->last_dc[i];
1646 d->mv_bits= s->mv_bits;
1647 d->i_tex_bits= s->i_tex_bits;
1648 d->p_tex_bits= s->p_tex_bits;
1649 d->i_count= s->i_count;
1650 d->p_count= s->p_count;
1651 d->skip_count= s->skip_count;
1652 d->misc_bits= s->misc_bits;
1654 d->mb_intra= s->mb_intra;
1655 d->mb_skiped= s->mb_skiped;
1656 d->mv_type= s->mv_type;
1657 d->mv_dir= s->mv_dir;
1659 if(s->data_partitioning){
1661 d->tex_pb= s->tex_pb;
1665 d->block_last_index[i]= s->block_last_index[i];
1668 static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
1669 PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
1670 int *dmin, int *next_block, int motion_x, int motion_y)
1674 copy_context_before_encode(s, backup, type);
1676 s->block= s->blocks[*next_block];
1677 s->pb= pb[*next_block];
1678 if(s->data_partitioning){
1679 s->pb2 = pb2 [*next_block];
1680 s->tex_pb= tex_pb[*next_block];
1683 encode_mb(s, motion_x, motion_y);
1685 bits_count= get_bit_count(&s->pb);
1686 if(s->data_partitioning){
1687 bits_count+= get_bit_count(&s->pb2);
1688 bits_count+= get_bit_count(&s->tex_pb);
1691 if(bits_count<*dmin){
1695 copy_context_after_encode(best, s, type);
1699 static void encode_picture(MpegEncContext *s, int picture_number)
1701 int mb_x, mb_y, last_gob, pdif = 0;
1704 MpegEncContext best_s, backup_s;
1705 UINT8 bit_buf[2][3000];
1706 UINT8 bit_buf2[2][3000];
1707 UINT8 bit_buf_tex[2][3000];
1708 PutBitContext pb[2], pb2[2], tex_pb[2];
1711 init_put_bits(&pb [i], bit_buf [i], 3000, NULL, NULL);
1712 init_put_bits(&pb2 [i], bit_buf2 [i], 3000, NULL, NULL);
1713 init_put_bits(&tex_pb[i], bit_buf_tex[i], 3000, NULL, NULL);
1716 s->picture_number = picture_number;
1721 s->block_wrap[3]= s->mb_width*2 + 2;
1723 s->block_wrap[5]= s->mb_width + 2;
1725 /* Reset the average MB variance */
1727 s->mc_mb_var_sum = 0;
1729 /* we need to initialize some time vars before we can encode b-frames */
1730 if (s->h263_pred && !s->h263_msmpeg4)
1731 ff_set_mpeg4_time(s, s->picture_number);
1733 /* Estimate motion for every MB */
1734 if(s->pict_type != I_TYPE){
1735 for(mb_y=0; mb_y < s->mb_height; mb_y++) {
1736 s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
1737 s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
1738 s->block_index[2]= s->block_wrap[0]*(mb_y*2 + 2) - 1;
1739 s->block_index[3]= s->block_wrap[0]*(mb_y*2 + 2);
1740 for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1743 s->block_index[0]+=2;
1744 s->block_index[1]+=2;
1745 s->block_index[2]+=2;
1746 s->block_index[3]+=2;
1748 /* compute motion vector & mb_type and store in context */
1749 if(s->pict_type==B_TYPE)
1750 ff_estimate_b_frame_motion(s, mb_x, mb_y);
1752 ff_estimate_p_frame_motion(s, mb_x, mb_y);
1753 // s->mb_type[mb_y*s->mb_width + mb_x]=MB_TYPE_INTER;
1757 }else /* if(s->pict_type == I_TYPE) */{
1759 //FIXME do we need to zero them?
1760 memset(s->motion_val[0], 0, sizeof(INT16)*(s->mb_width*2 + 2)*(s->mb_height*2 + 2)*2);
1761 memset(s->p_mv_table , 0, sizeof(INT16)*(s->mb_width+2)*(s->mb_height+2)*2);
1762 memset(s->mb_type , MB_TYPE_INTRA, sizeof(UINT8)*s->mb_width*s->mb_height);
1765 if(s->mb_var_sum < s->mc_mb_var_sum && s->pict_type == P_TYPE){ //FIXME subtract MV bits
1766 s->pict_type= I_TYPE;
1767 memset(s->mb_type , MB_TYPE_INTRA, sizeof(UINT8)*s->mb_width*s->mb_height);
1768 if(s->max_b_frames==0){
1769 s->input_pict_type= I_TYPE;
1770 s->input_picture_in_gop_number=0;
1772 //printf("Scene change detected, encoding as I Frame\n");
1775 if(s->pict_type==P_TYPE || s->pict_type==S_TYPE)
1776 s->f_code= ff_get_best_fcode(s, s->p_mv_table, MB_TYPE_INTER);
1777 ff_fix_long_p_mvs(s);
1778 if(s->pict_type==B_TYPE){
1779 s->f_code= ff_get_best_fcode(s, s->b_forw_mv_table, MB_TYPE_FORWARD);
1780 s->b_code= ff_get_best_fcode(s, s->b_back_mv_table, MB_TYPE_BACKWARD);
1782 ff_fix_long_b_mvs(s, s->b_forw_mv_table, s->f_code, MB_TYPE_FORWARD);
1783 ff_fix_long_b_mvs(s, s->b_back_mv_table, s->b_code, MB_TYPE_BACKWARD);
1784 ff_fix_long_b_mvs(s, s->b_bidir_forw_mv_table, s->f_code, MB_TYPE_BIDIR);
1785 ff_fix_long_b_mvs(s, s->b_bidir_back_mv_table, s->b_code, MB_TYPE_BIDIR);
1788 //printf("f_code %d ///\n", s->f_code);
1790 // printf("%d %d\n", s->avg_mb_var, s->mc_mb_var);
1792 if(s->flags&CODEC_FLAG_PASS2)
1793 s->qscale = ff_rate_estimate_qscale_pass2(s);
1794 else if (!s->fixed_qscale)
1795 s->qscale = ff_rate_estimate_qscale(s);
1797 if (s->out_format == FMT_MJPEG) {
1798 /* for mjpeg, we do include qscale in the matrix */
1799 s->intra_matrix[0] = default_intra_matrix[0];
1801 s->intra_matrix[i] = CLAMP_TO_8BIT((default_intra_matrix[i] * s->qscale) >> 3);
1802 convert_matrix(s->q_intra_matrix, s->q_intra_matrix16,
1803 s->q_intra_matrix16_bias, s->intra_matrix, s->intra_quant_bias);
1806 s->last_bits= get_bit_count(&s->pb);
1807 switch(s->out_format) {
1809 mjpeg_picture_header(s);
1812 if (s->h263_msmpeg4)
1813 msmpeg4_encode_picture_header(s, picture_number);
1814 else if (s->h263_pred)
1815 mpeg4_encode_picture_header(s, picture_number);
1816 else if (s->h263_rv10)
1817 rv10_encode_picture_header(s, picture_number);
1819 h263_encode_picture_header(s, picture_number);
1822 mpeg1_encode_picture_header(s, picture_number);
1825 bits= get_bit_count(&s->pb);
1826 s->header_bits= bits - s->last_bits;
1836 /* init last dc values */
1837 /* note: quant matrix value (8) is implied here */
1838 s->last_dc[0] = 128;
1839 s->last_dc[1] = 128;
1840 s->last_dc[2] = 128;
1842 s->last_mv[0][0][0] = 0;
1843 s->last_mv[0][0][1] = 0;
1845 /* Get the GOB height based on picture height */
1846 if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4) {
1847 if (s->height <= 400)
1849 else if (s->height <= 800)
1853 }else if(s->codec_id==CODEC_ID_MPEG4){
1857 if(s->codec_id==CODEC_ID_MPEG4 && s->data_partitioning && s->pict_type!=B_TYPE)
1858 ff_mpeg4_init_partitions(s);
1862 for(mb_y=0; mb_y < s->mb_height; mb_y++) {
1863 /* Put GOB header based on RTP MTU for formats which support it per line (H263*)*/
1864 /* TODO: Put all this stuff in a separate generic function */
1867 s->ptr_lastgob = s->pb.buf;
1868 s->ptr_last_mb_line = s->pb.buf;
1869 } else if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4 && !(mb_y % s->gob_index)) {
1870 // MN: we could move the space check from h263 -> here, as its not h263 specific
1871 last_gob = h263_encode_gob_header(s, mb_y);
1873 s->first_slice_line = 1;
1875 /*MN: we reset it here instead at the end of each line cuz mpeg4 can have
1876 slice lines starting & ending in the middle*/
1877 s->first_slice_line = 0;
1882 s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
1883 s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
1885 s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
1886 s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
1887 s->block_index[2]= s->block_wrap[0]*(mb_y*2 + 2) - 1;
1888 s->block_index[3]= s->block_wrap[0]*(mb_y*2 + 2);
1889 s->block_index[4]= s->block_wrap[4]*(mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2);
1890 s->block_index[5]= s->block_wrap[4]*(mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2);
1891 for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1892 const int mb_type= s->mb_type[mb_y * s->mb_width + mb_x];
1893 const int xy= (mb_y+1) * (s->mb_width+2) + mb_x + 1;
1899 s->block_index[0]+=2;
1900 s->block_index[1]+=2;
1901 s->block_index[2]+=2;
1902 s->block_index[3]+=2;
1903 s->block_index[4]++;
1904 s->block_index[5]++;
1906 /* write gob / video packet header for formats which support it at any MB (MPEG4) */
1907 if(s->rtp_mode && s->mb_y>0 && s->codec_id==CODEC_ID_MPEG4){
1908 int pdif= pbBufPtr(&s->pb) - s->ptr_lastgob;
1910 //the *2 is there so we stay below the requested size
1911 if(pdif + s->mb_line_avgsize/s->mb_width >= s->rtp_payload_size){
1912 if(s->codec_id==CODEC_ID_MPEG4){
1913 if(s->data_partitioning && s->pict_type!=B_TYPE){
1914 ff_mpeg4_merge_partitions(s);
1915 ff_mpeg4_init_partitions(s);
1917 ff_mpeg4_encode_video_packet_header(s);
1919 if(s->flags&CODEC_FLAG_PASS1){
1920 int bits= get_bit_count(&s->pb);
1921 s->misc_bits+= bits - s->last_bits;
1924 ff_mpeg4_clean_buffers(s);
1926 s->ptr_lastgob = pbBufPtr(&s->pb);
1927 s->first_slice_line=1;
1928 s->resync_mb_x=mb_x;
1929 s->resync_mb_y=mb_y;
1932 if( (s->resync_mb_x == s->mb_x)
1933 && s->resync_mb_y+1 == s->mb_y){
1934 s->first_slice_line=0;
1938 if(mb_type & (mb_type-1)){ // more than 1 MB type possible
1940 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
1942 copy_context_before_encode(&backup_s, s, -1);
1944 best_s.data_partitioning= s->data_partitioning;
1945 if(s->data_partitioning){
1946 backup_s.pb2= s->pb2;
1947 backup_s.tex_pb= s->tex_pb;
1950 if(mb_type&MB_TYPE_INTER){
1951 s->mv_dir = MV_DIR_FORWARD;
1952 s->mv_type = MV_TYPE_16X16;
1954 s->mv[0][0][0] = s->p_mv_table[xy][0];
1955 s->mv[0][0][1] = s->p_mv_table[xy][1];
1956 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_INTER, pb, pb2, tex_pb,
1957 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
1959 if(mb_type&MB_TYPE_INTER4V){
1960 s->mv_dir = MV_DIR_FORWARD;
1961 s->mv_type = MV_TYPE_8X8;
1964 s->mv[0][i][0] = s->motion_val[s->block_index[i]][0];
1965 s->mv[0][i][1] = s->motion_val[s->block_index[i]][1];
1967 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_INTER4V, pb, pb2, tex_pb,
1968 &dmin, &next_block, 0, 0);
1970 if(mb_type&MB_TYPE_FORWARD){
1971 s->mv_dir = MV_DIR_FORWARD;
1972 s->mv_type = MV_TYPE_16X16;
1974 s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
1975 s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
1976 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_FORWARD, pb, pb2, tex_pb,
1977 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
1979 if(mb_type&MB_TYPE_BACKWARD){
1980 s->mv_dir = MV_DIR_BACKWARD;
1981 s->mv_type = MV_TYPE_16X16;
1983 s->mv[1][0][0] = s->b_back_mv_table[xy][0];
1984 s->mv[1][0][1] = s->b_back_mv_table[xy][1];
1985 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_BACKWARD, pb, pb2, tex_pb,
1986 &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
1988 if(mb_type&MB_TYPE_BIDIR){
1989 s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
1990 s->mv_type = MV_TYPE_16X16;
1992 s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
1993 s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
1994 s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
1995 s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
1996 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_BIDIR, pb, pb2, tex_pb,
1997 &dmin, &next_block, 0, 0);
1999 if(mb_type&MB_TYPE_DIRECT){
2000 s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2001 s->mv_type = MV_TYPE_16X16; //FIXME
2003 s->mv[0][0][0] = s->b_direct_forw_mv_table[xy][0];
2004 s->mv[0][0][1] = s->b_direct_forw_mv_table[xy][1];
2005 s->mv[1][0][0] = s->b_direct_back_mv_table[xy][0];
2006 s->mv[1][0][1] = s->b_direct_back_mv_table[xy][1];
2007 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_DIRECT, pb, pb2, tex_pb,
2008 &dmin, &next_block, s->b_direct_mv_table[xy][0], s->b_direct_mv_table[xy][1]);
2010 if(mb_type&MB_TYPE_INTRA){
2011 s->mv_dir = MV_DIR_FORWARD;
2012 s->mv_type = MV_TYPE_16X16;
2016 encode_mb_hq(s, &backup_s, &best_s, MB_TYPE_INTRA, pb, pb2, tex_pb,
2017 &dmin, &next_block, 0, 0);
2018 /* force cleaning of ac/dc pred stuff if needed ... */
2019 if(s->h263_pred || s->h263_aic)
2020 s->mbintra_table[mb_x + mb_y*s->mb_width]=1;
2022 copy_context_after_encode(s, &best_s, -1);
2024 pb_bits_count= get_bit_count(&s->pb);
2025 flush_put_bits(&s->pb);
2026 ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
2029 if(s->data_partitioning){
2030 pb2_bits_count= get_bit_count(&s->pb2);
2031 flush_put_bits(&s->pb2);
2032 ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
2033 s->pb2= backup_s.pb2;
2035 tex_pb_bits_count= get_bit_count(&s->tex_pb);
2036 flush_put_bits(&s->tex_pb);
2037 ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
2038 s->tex_pb= backup_s.tex_pb;
2040 s->last_bits= get_bit_count(&s->pb);
2042 int motion_x, motion_y;
2043 s->mv_type=MV_TYPE_16X16;
2044 // only one MB-Type possible
2047 s->mv_dir = MV_DIR_FORWARD;
2049 motion_x= s->mv[0][0][0] = 0;
2050 motion_y= s->mv[0][0][1] = 0;
2053 s->mv_dir = MV_DIR_FORWARD;
2055 motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
2056 motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
2058 case MB_TYPE_INTER4V:
2059 s->mv_dir = MV_DIR_FORWARD;
2060 s->mv_type = MV_TYPE_8X8;
2063 s->mv[0][i][0] = s->motion_val[s->block_index[i]][0];
2064 s->mv[0][i][1] = s->motion_val[s->block_index[i]][1];
2066 motion_x= motion_y= 0;
2068 case MB_TYPE_DIRECT:
2069 s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
2071 motion_x=s->b_direct_mv_table[xy][0];
2072 motion_y=s->b_direct_mv_table[xy][1];
2073 s->mv[0][0][0] = s->b_direct_forw_mv_table[xy][0];
2074 s->mv[0][0][1] = s->b_direct_forw_mv_table[xy][1];
2075 s->mv[1][0][0] = s->b_direct_back_mv_table[xy][0];
2076 s->mv[1][0][1] = s->b_direct_back_mv_table[xy][1];
2079 s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
2083 s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
2084 s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
2085 s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
2086 s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
2088 case MB_TYPE_BACKWARD:
2089 s->mv_dir = MV_DIR_BACKWARD;
2091 motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
2092 motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
2094 case MB_TYPE_FORWARD:
2095 s->mv_dir = MV_DIR_FORWARD;
2097 motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
2098 motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
2099 // printf(" %d %d ", motion_x, motion_y);
2102 motion_x=motion_y=0; //gcc warning fix
2103 printf("illegal MB type\n");
2105 encode_mb(s, motion_x, motion_y);
2107 /* clean the MV table in IPS frames for direct mode in B frames */
2108 if(s->mb_intra /* && I,P,S_TYPE */){
2109 s->p_mv_table[xy][0]=0;
2110 s->p_mv_table[xy][1]=0;
2113 MPV_decode_mb(s, s->block);
2114 //printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_width, get_bit_count(&s->pb));
2118 /* Obtain average GOB size for RTP */
2121 s->mb_line_avgsize = pbBufPtr(&s->pb) - s->ptr_last_mb_line;
2122 else if (!(mb_y % s->gob_index)) {
2123 s->mb_line_avgsize = (s->mb_line_avgsize + pbBufPtr(&s->pb) - s->ptr_last_mb_line) >> 1;
2124 s->ptr_last_mb_line = pbBufPtr(&s->pb);
2126 //fprintf(stderr, "\nMB line: %d\tSize: %u\tAvg. Size: %u", s->mb_y,
2127 // (s->pb.buf_ptr - s->ptr_last_mb_line), s->mb_line_avgsize);
2128 if(s->codec_id!=CODEC_ID_MPEG4) s->first_slice_line = 0; //FIXME clean
2133 if(s->codec_id==CODEC_ID_MPEG4 && s->data_partitioning && s->pict_type!=B_TYPE)
2134 ff_mpeg4_merge_partitions(s);
2136 if (s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
2137 msmpeg4_encode_ext_header(s);
2139 if(s->codec_id==CODEC_ID_MPEG4)
2140 ff_mpeg4_stuffing(&s->pb);
2142 //if (s->gob_number)
2143 // fprintf(stderr,"\nNumber of GOB: %d", s->gob_number);
2145 /* Send the last GOB if RTP */
2147 flush_put_bits(&s->pb);
2148 pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
2149 /* Call the RTP callback to send the last GOB */
2150 if (s->rtp_callback)
2151 s->rtp_callback(s->ptr_lastgob, pdif, s->gob_number);
2152 s->ptr_lastgob = pbBufPtr(&s->pb);
2153 //fprintf(stderr,"\nGOB: %2d size: %d (last)", s->gob_number, pdif);
2157 static int dct_quantize_c(MpegEncContext *s,
2158 DCTELEM *block, int n,
2159 int qscale, int *overflow)
2161 int i, j, level, last_non_zero, q;
2165 unsigned int threshold1, threshold2;
2169 /* we need this permutation so that we correct the IDCT
2170 permutation. will be moved into DCT code */
2171 block_permute(block);
2181 /* For AIC we skip quant/dequant of INTRADC */
2184 /* note: block[0] is assumed to be positive */
2185 block[0] = (block[0] + (q >> 1)) / q;
2188 qmat = s->q_intra_matrix[qscale];
2189 bias= s->intra_quant_bias<<(QMAT_SHIFT - 3 - QUANT_BIAS_SHIFT);
2193 qmat = s->q_inter_matrix[qscale];
2194 bias= s->inter_quant_bias<<(QMAT_SHIFT - 3 - QUANT_BIAS_SHIFT);
2196 threshold1= (1<<(QMAT_SHIFT - 3)) - bias - 1;
2197 threshold2= threshold1<<1;
2200 j = zigzag_direct[i];
2202 level = level * qmat[j];
2204 // if( bias+level >= (1<<(QMAT_SHIFT - 3))
2205 // || bias-level >= (1<<(QMAT_SHIFT - 3))){
2206 if(((unsigned)(level+threshold1))>threshold2){
2208 level= (bias + level)>>(QMAT_SHIFT - 3);
2211 level= (bias - level)>>(QMAT_SHIFT - 3);
2220 *overflow= s->max_qcoeff < max; //overflow might have happend
2222 return last_non_zero;
2225 static void dct_unquantize_mpeg1_c(MpegEncContext *s,
2226 DCTELEM *block, int n, int qscale)
2228 int i, level, nCoeffs;
2229 const UINT16 *quant_matrix;
2231 if(s->alternate_scan) nCoeffs= 64;
2232 else nCoeffs= s->block_last_index[n]+1;
2236 block[0] = block[0] * s->y_dc_scale;
2238 block[0] = block[0] * s->c_dc_scale;
2239 /* XXX: only mpeg1 */
2240 quant_matrix = s->intra_matrix;
2241 for(i=1;i<nCoeffs;i++) {
2242 int j= zigzag_direct[i];
2247 level = (int)(level * qscale * quant_matrix[j]) >> 3;
2248 level = (level - 1) | 1;
2251 level = (int)(level * qscale * quant_matrix[j]) >> 3;
2252 level = (level - 1) | 1;
2255 if (level < -2048 || level > 2047)
2256 fprintf(stderr, "unquant error %d %d\n", i, level);
2263 quant_matrix = s->inter_matrix;
2264 for(;i<nCoeffs;i++) {
2265 int j= zigzag_direct[i];
2270 level = (((level << 1) + 1) * qscale *
2271 ((int) (quant_matrix[j]))) >> 4;
2272 level = (level - 1) | 1;
2275 level = (((level << 1) + 1) * qscale *
2276 ((int) (quant_matrix[j]))) >> 4;
2277 level = (level - 1) | 1;
2280 if (level < -2048 || level > 2047)
2281 fprintf(stderr, "unquant error %d %d\n", i, level);
2289 static void dct_unquantize_mpeg2_c(MpegEncContext *s,
2290 DCTELEM *block, int n, int qscale)
2292 int i, level, nCoeffs;
2293 const UINT16 *quant_matrix;
2295 if(s->alternate_scan) nCoeffs= 64;
2296 else nCoeffs= s->block_last_index[n]+1;
2300 block[0] = block[0] * s->y_dc_scale;
2302 block[0] = block[0] * s->c_dc_scale;
2303 quant_matrix = s->intra_matrix;
2304 for(i=1;i<nCoeffs;i++) {
2305 int j= zigzag_direct[i];
2310 level = (int)(level * qscale * quant_matrix[j]) >> 3;
2313 level = (int)(level * qscale * quant_matrix[j]) >> 3;
2316 if (level < -2048 || level > 2047)
2317 fprintf(stderr, "unquant error %d %d\n", i, level);
2325 quant_matrix = s->inter_matrix;
2326 for(;i<nCoeffs;i++) {
2327 int j= zigzag_direct[i];
2332 level = (((level << 1) + 1) * qscale *
2333 ((int) (quant_matrix[j]))) >> 4;
2336 level = (((level << 1) + 1) * qscale *
2337 ((int) (quant_matrix[j]))) >> 4;
2340 if (level < -2048 || level > 2047)
2341 fprintf(stderr, "unquant error %d %d\n", i, level);
2352 static void dct_unquantize_h263_c(MpegEncContext *s,
2353 DCTELEM *block, int n, int qscale)
2355 int i, level, qmul, qadd;
2361 block[0] = block[0] * s->y_dc_scale;
2363 block[0] = block[0] * s->c_dc_scale;
2366 nCoeffs= 64; //does not allways use zigzag table
2369 nCoeffs= zigzag_end[ s->block_last_index[n] ];
2372 qmul = s->qscale << 1;
2373 if (s->h263_aic && s->mb_intra)
2376 qadd = (s->qscale - 1) | 1;
2378 for(;i<nCoeffs;i++) {
2382 level = level * qmul - qadd;
2384 level = level * qmul + qadd;
2387 if (level < -2048 || level > 2047)
2388 fprintf(stderr, "unquant error %d %d\n", i, level);
2395 static void remove_ac(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
2397 int dc, dcb, dcr, y, i;
2399 dc= s->dc_val[0][mb_x*2+1 + (i&1) + (mb_y*2+1 + (i>>1))*(s->mb_width*2+2)];
2403 dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8;
2407 dcb = s->dc_val[1][mb_x+1 + (mb_y+1)*(s->mb_width+2)];
2408 dcr= s->dc_val[2][mb_x+1 + (mb_y+1)*(s->mb_width+2)];
2412 dest_cb[x + y*(s->linesize>>1)]= dcb/8;
2413 dest_cr[x + y*(s->linesize>>1)]= dcr/8;
2419 * will conceal past errors, and allso drop b frames if needed
2422 void ff_conceal_past_errors(MpegEncContext *s, int unknown_pos)
2427 int i, intra_count=0, inter_count=0;
2428 int intra_conceal= s->msmpeg4_version ? 50 : 50; //FIXME finetune
2429 int inter_conceal= s->msmpeg4_version ? 50 : 50;
2432 if(mb_x>=s->mb_width) mb_x= s->mb_width -1;
2433 if(mb_y>=s->mb_height) mb_y= s->mb_height-1;
2435 if(s->decoding_error==0 && unknown_pos){
2436 if(s->data_partitioning && s->pict_type!=B_TYPE)
2437 s->decoding_error= DECODING_AC_LOST;
2439 s->decoding_error= DECODING_DESYNC;
2442 if(s->decoding_error==DECODING_DESYNC && s->pict_type!=B_TYPE) s->next_p_frame_damaged=1;
2444 for(i=mb_x + mb_y*s->mb_width; i>=0; i--){
2445 if(s->mbintra_table[i]) intra_count++;
2449 if(s->decoding_error==DECODING_AC_LOST){
2452 }else if(s->decoding_error==DECODING_ACDC_LOST){
2457 if(unknown_pos && (intra_count<inter_count)){
2458 intra_conceal= inter_conceal= s->mb_num;
2459 // printf("%d %d\n",intra_count, inter_count);
2462 fprintf(stderr, "concealing errors\n");
2464 /* for all MBs from the current one back until the last resync marker */
2465 for(; mb_y>=0 && mb_y>=s->resync_mb_y; mb_y--){
2466 for(; mb_x>=0; mb_x--){
2467 uint8_t *dest_y = s->current_picture[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2468 uint8_t *dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
2469 uint8_t *dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
2470 int mb_x_backup= s->mb_x; //FIXME pass xy to mpeg_motion
2471 int mb_y_backup= s->mb_y;
2474 if(s->mbintra_table[mb_y*s->mb_width + mb_x] && mb_dist<intra_conceal){
2475 if(s->decoding_error==DECODING_AC_LOST){
2476 remove_ac(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
2477 // printf("remove ac to %d %d\n", mb_x, mb_y);
2479 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
2480 s->last_picture, 0, 0, put_pixels_tab,
2481 0/*mx*/, 0/*my*/, 16);
2484 else if(!s->mbintra_table[mb_y*s->mb_width + mb_x] && mb_dist<inter_conceal){
2488 if(s->decoding_error!=DECODING_DESYNC){
2489 int xy= mb_x*2+1 + (mb_y*2+1)*(s->mb_width*2+2);
2490 mx= s->motion_val[ xy ][0];
2491 my= s->motion_val[ xy ][1];
2494 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
2495 s->last_picture, 0, 0, put_pixels_tab,
2498 s->mb_x= mb_x_backup;
2499 s->mb_y= mb_y_backup;
2501 if(mb_x== s->resync_mb_x && mb_y== s->resync_mb_y) return;
2502 if(!s->mbskip_table[mb_x + mb_y*s->mb_width]) mb_dist++;
2508 AVCodec mpeg1video_encoder = {
2511 CODEC_ID_MPEG1VIDEO,
2512 sizeof(MpegEncContext),
2518 AVCodec h263_encoder = {
2522 sizeof(MpegEncContext),
2528 AVCodec h263p_encoder = {
2532 sizeof(MpegEncContext),
2538 AVCodec rv10_encoder = {
2542 sizeof(MpegEncContext),
2548 AVCodec mjpeg_encoder = {
2552 sizeof(MpegEncContext),
2558 AVCodec mpeg4_encoder = {
2562 sizeof(MpegEncContext),
2568 AVCodec msmpeg4v1_encoder = {
2572 sizeof(MpegEncContext),
2578 AVCodec msmpeg4v2_encoder = {
2582 sizeof(MpegEncContext),
2588 AVCodec msmpeg4v3_encoder = {
2592 sizeof(MpegEncContext),
2598 AVCodec wmv1_encoder = {
2602 sizeof(MpegEncContext),
2608 AVCodec wmv2_encoder = {
2612 sizeof(MpegEncContext),