fixing bgr15&16 on big_endian
[libav.git] / libavcodec / mpegvideo.c
CommitLineData
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FB
1/*
2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Gerard Lantau.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program 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
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19#include <stdlib.h>
20#include <stdio.h>
21#include <math.h>
22#include <string.h>
23#include "avcodec.h"
24#include "dsputil.h"
25#include "mpegvideo.h"
26
54329dd5
NK
27#ifdef USE_FASTMEMCPY
28#include "fastmemcpy.h"
29#endif
30
21af69f7
FB
31static void encode_picture(MpegEncContext *s, int picture_number);
32static void rate_control_init(MpegEncContext *s);
33static int rate_estimate_qscale(MpegEncContext *s);
34static void dct_unquantize_mpeg1_c(MpegEncContext *s,
35 DCTELEM *block, int n, int qscale);
36static void dct_unquantize_h263_c(MpegEncContext *s,
37 DCTELEM *block, int n, int qscale);
3d9fccbf 38static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w);
2f349de2 39static int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale);
3d9fccbf 40
2f349de2 41int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale)= dct_quantize_c;
3d9fccbf
MN
42void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w)= draw_edges_c;
43
de6d9b64
FB
44#define EDGE_WIDTH 16
45
46/* enable all paranoid tests for rounding, overflows, etc... */
47//#define PARANOID
48
49//#define DEBUG
50
51/* for jpeg fast DCT */
52#define CONST_BITS 14
53
54static const unsigned short aanscales[64] = {
55 /* precomputed values scaled up by 14 bits */
56 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
57 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
58 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
59 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
60 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
61 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
62 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446,
63 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
64};
65
66static UINT8 h263_chroma_roundtab[16] = {
67 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
68};
69
de6d9b64
FB
70/* default motion estimation */
71int motion_estimation_method = ME_LOG;
72
badaf88e
MN
73extern UINT8 zigzag_end[64];
74
2f349de2 75static void convert_matrix(int *qmat, UINT16 *qmat16, const UINT16 *quant_matrix, int qscale)
de6d9b64
FB
76{
77 int i;
78
79 if (av_fdct == jpeg_fdct_ifast) {
80 for(i=0;i<64;i++) {
81 /* 16 <= qscale * quant_matrix[i] <= 7905 */
2f349de2
MN
82 /* 19952 <= aanscales[i] * qscale * quant_matrix[i] <= 249205026 */
83 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
84 /* 3444240 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
de6d9b64 85
2f349de2
MN
86 qmat[block_permute_op(i)] = (int)((UINT64_C(1) << (QMAT_SHIFT + 11)) /
87 (aanscales[i] * qscale * quant_matrix[block_permute_op(i)]));
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FB
88 }
89 } else {
90 for(i=0;i<64;i++) {
91 /* We can safely suppose that 16 <= quant_matrix[i] <= 255
2f349de2
MN
92 So 16 <= qscale * quant_matrix[i] <= 7905
93 so (1<<19) / 16 >= (1<<19) / (qscale * quant_matrix[i]) >= (1<<19) / 7905
94 so 32768 >= (1<<19) / (qscale * quant_matrix[i]) >= 67
de6d9b64 95 */
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MN
96 qmat[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[i]);
97 qmat16[i] = (1 << QMAT_SHIFT_MMX) / (qscale * quant_matrix[block_permute_op(i)]);
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98 }
99 }
100}
101
102/* init common structure for both encoder and decoder */
103int MPV_common_init(MpegEncContext *s)
104{
105 int c_size, i;
106 UINT8 *pict;
107
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108 if (s->out_format == FMT_H263)
109 s->dct_unquantize = dct_unquantize_h263_c;
110 else
111 s->dct_unquantize = dct_unquantize_mpeg1_c;
112
113#ifdef HAVE_MMX
114 MPV_common_init_mmx(s);
a9b3f630 115#endif
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116 s->mb_width = (s->width + 15) / 16;
117 s->mb_height = (s->height + 15) / 16;
e03c341e 118 s->mb_num = s->mb_width * s->mb_height;
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119 s->linesize = s->mb_width * 16 + 2 * EDGE_WIDTH;
120
121 for(i=0;i<3;i++) {
122 int w, h, shift, pict_start;
123
124 w = s->linesize;
125 h = s->mb_height * 16 + 2 * EDGE_WIDTH;
126 shift = (i == 0) ? 0 : 1;
127 c_size = (w >> shift) * (h >> shift);
128 pict_start = (w >> shift) * (EDGE_WIDTH >> shift) + (EDGE_WIDTH >> shift);
129
130 pict = av_mallocz(c_size);
131 if (pict == NULL)
132 goto fail;
133 s->last_picture_base[i] = pict;
134 s->last_picture[i] = pict + pict_start;
135
136 pict = av_mallocz(c_size);
137 if (pict == NULL)
138 goto fail;
139 s->next_picture_base[i] = pict;
140 s->next_picture[i] = pict + pict_start;
141
142 if (s->has_b_frames) {
143 pict = av_mallocz(c_size);
144 if (pict == NULL)
145 goto fail;
146 s->aux_picture_base[i] = pict;
147 s->aux_picture[i] = pict + pict_start;
148 }
149 }
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J
150
151 if (s->encoding) {
152 /* Allocate MB type table */
b4dbd87c 153 s->mb_type = av_mallocz(s->mb_num * sizeof(char));
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J
154 if (s->mb_type == NULL) {
155 perror("malloc");
156 goto fail;
157 }
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J
158
159 s->mb_var = av_mallocz(s->mb_num * sizeof(INT16));
160 if (s->mb_var == NULL) {
161 perror("malloc");
162 goto fail;
163 }
37fbfd0a
J
164 /* Allocate MV table */
165 /* By now we just have one MV per MB */
b4dbd87c
J
166 s->mv_table[0] = av_mallocz(s->mb_num * sizeof(INT16));
167 s->mv_table[1] = av_mallocz(s->mb_num * sizeof(INT16));
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J
168 if (s->mv_table[1] == NULL || s->mv_table[0] == NULL) {
169 perror("malloc");
170 goto fail;
171 }
172 }
173
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174 if (s->out_format == FMT_H263) {
175 int size;
176 /* MV prediction */
177 size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
178 s->motion_val = malloc(size * 2 * sizeof(INT16));
179 if (s->motion_val == NULL)
180 goto fail;
181 memset(s->motion_val, 0, size * 2 * sizeof(INT16));
182 }
183
d140623f 184 if (s->h263_pred || s->h263_plus) {
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185 int y_size, c_size, i, size;
186
187 /* dc values */
188
189 y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
190 c_size = (s->mb_width + 2) * (s->mb_height + 2);
191 size = y_size + 2 * c_size;
192 s->dc_val[0] = malloc(size * sizeof(INT16));
193 if (s->dc_val[0] == NULL)
194 goto fail;
195 s->dc_val[1] = s->dc_val[0] + y_size;
196 s->dc_val[2] = s->dc_val[1] + c_size;
197 for(i=0;i<size;i++)
198 s->dc_val[0][i] = 1024;
199
200 /* ac values */
201 s->ac_val[0] = av_mallocz(size * sizeof(INT16) * 16);
202 if (s->ac_val[0] == NULL)
203 goto fail;
204 s->ac_val[1] = s->ac_val[0] + y_size;
205 s->ac_val[2] = s->ac_val[1] + c_size;
206
207 /* cbp values */
208 s->coded_block = av_mallocz(y_size);
209 if (!s->coded_block)
210 goto fail;
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MN
211
212 /* which mb is a intra block */
e03c341e 213 s->mbintra_table = av_mallocz(s->mb_num);
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MN
214 if (!s->mbintra_table)
215 goto fail;
e03c341e 216 memset(s->mbintra_table, 1, s->mb_num);
5b3438c6 217 }
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218 /* default structure is frame */
219 s->picture_structure = PICT_FRAME;
220
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221 /* init macroblock skip table */
222 if (!s->encoding) {
e03c341e 223 s->mbskip_table = av_mallocz(s->mb_num);
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FB
224 if (!s->mbskip_table)
225 goto fail;
226 }
227
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228 s->context_initialized = 1;
229 return 0;
230 fail:
8257bf05 231 MPV_common_end(s);
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232 return -1;
233}
234
235/* init common structure for both encoder and decoder */
236void MPV_common_end(MpegEncContext *s)
237{
238 int i;
239
37fbfd0a
J
240 if (s->mb_type)
241 free(s->mb_type);
b4dbd87c
J
242 if (s->mb_var)
243 free(s->mb_var);
37fbfd0a
J
244 if (s->mv_table[0])
245 free(s->mv_table[0]);
246 if (s->mv_table[1])
247 free(s->mv_table[1]);
de6d9b64
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248 if (s->motion_val)
249 free(s->motion_val);
8257bf05 250 if (s->dc_val[0])
de6d9b64 251 free(s->dc_val[0]);
8257bf05 252 if (s->ac_val[0])
de6d9b64 253 free(s->ac_val[0]);
8257bf05 254 if (s->coded_block)
de6d9b64 255 free(s->coded_block);
8257bf05 256 if (s->mbintra_table)
5b3438c6 257 free(s->mbintra_table);
8257bf05 258
3bb4e23a
FB
259 if (s->mbskip_table)
260 free(s->mbskip_table);
de6d9b64 261 for(i=0;i<3;i++) {
8257bf05
ZK
262 if (s->last_picture_base[i])
263 free(s->last_picture_base[i]);
264 if (s->next_picture_base[i])
265 free(s->next_picture_base[i]);
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FB
266 if (s->has_b_frames)
267 free(s->aux_picture_base[i]);
268 }
269 s->context_initialized = 0;
270}
271
272/* init video encoder */
273int MPV_encode_init(AVCodecContext *avctx)
274{
275 MpegEncContext *s = avctx->priv_data;
519c2b6d 276 int i;
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FB
277
278 s->bit_rate = avctx->bit_rate;
9cdd6a24 279 s->bit_rate_tolerance = avctx->bit_rate_tolerance;
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FB
280 s->frame_rate = avctx->frame_rate;
281 s->width = avctx->width;
282 s->height = avctx->height;
283 s->gop_size = avctx->gop_size;
644d98a4
J
284 s->rtp_mode = avctx->rtp_mode;
285 s->rtp_payload_size = avctx->rtp_payload_size;
81401c1f
J
286 if (avctx->rtp_callback)
287 s->rtp_callback = avctx->rtp_callback;
9cdd6a24
MN
288 s->qmin= avctx->qmin;
289 s->qmax= avctx->qmax;
290 s->max_qdiff= avctx->max_qdiff;
291 s->qcompress= avctx->qcompress;
292 s->qblur= avctx->qblur;
477c35a9 293 s->avctx = avctx;
644d98a4 294
de6d9b64
FB
295 if (s->gop_size <= 1) {
296 s->intra_only = 1;
297 s->gop_size = 12;
298 } else {
299 s->intra_only = 0;
300 }
301 s->full_search = motion_estimation_method;
302
303 s->fixed_qscale = (avctx->flags & CODEC_FLAG_QSCALE);
37fbfd0a 304
de6d9b64
FB
305 switch(avctx->codec->id) {
306 case CODEC_ID_MPEG1VIDEO:
307 s->out_format = FMT_MPEG1;
308 break;
309 case CODEC_ID_MJPEG:
310 s->out_format = FMT_MJPEG;
311 s->intra_only = 1; /* force intra only for jpeg */
37fbfd0a
J
312 s->mjpeg_write_tables = 1; /* write all tables */
313 s->mjpeg_vsample[0] = 2; /* set up default sampling factors */
314 s->mjpeg_vsample[1] = 1; /* the only currently supported values */
315 s->mjpeg_vsample[2] = 1;
316 s->mjpeg_hsample[0] = 2;
317 s->mjpeg_hsample[1] = 1;
318 s->mjpeg_hsample[2] = 1;
de6d9b64
FB
319 if (mjpeg_init(s) < 0)
320 return -1;
321 break;
322 case CODEC_ID_H263:
37fbfd0a
J
323 if (h263_get_picture_format(s->width, s->height) == 7) {
324 printf("Input picture size isn't suitable for h263 codec! try h263+\n");
de6d9b64 325 return -1;
37fbfd0a 326 }
de6d9b64
FB
327 s->out_format = FMT_H263;
328 break;
329 case CODEC_ID_H263P:
330 s->out_format = FMT_H263;
644d98a4
J
331 s->rtp_mode = 1;
332 s->rtp_payload_size = 1200;
de6d9b64 333 s->h263_plus = 1;
6dbd39fe 334 s->unrestricted_mv = 1;
544286b3
J
335
336 /* These are just to be sure */
337 s->umvplus = 0;
338 s->umvplus_dec = 0;
de6d9b64
FB
339 break;
340 case CODEC_ID_RV10:
341 s->out_format = FMT_H263;
342 s->h263_rv10 = 1;
343 break;
58f26ba9 344 case CODEC_ID_MPEG4:
de6d9b64
FB
345 s->out_format = FMT_H263;
346 s->h263_pred = 1;
347 s->unrestricted_mv = 1;
348 break;
349 case CODEC_ID_MSMPEG4:
350 s->out_format = FMT_H263;
351 s->h263_msmpeg4 = 1;
352 s->h263_pred = 1;
353 s->unrestricted_mv = 1;
354 break;
355 default:
356 return -1;
357 }
358
359 if (s->out_format == FMT_H263)
360 h263_encode_init_vlc(s);
361
3bb4e23a
FB
362 s->encoding = 1;
363
de6d9b64
FB
364 /* init */
365 if (MPV_common_init(s) < 0)
366 return -1;
367
519c2b6d
FB
368 /* init default q matrix */
369 for(i=0;i<64;i++) {
370 s->intra_matrix[i] = default_intra_matrix[i];
371 s->non_intra_matrix[i] = default_non_intra_matrix[i];
372 }
373
de6d9b64
FB
374 /* rate control init */
375 rate_control_init(s);
376
377 s->picture_number = 0;
378 s->fake_picture_number = 0;
379 /* motion detector init */
380 s->f_code = 1;
381
382 return 0;
383}
384
385int MPV_encode_end(AVCodecContext *avctx)
386{
387 MpegEncContext *s = avctx->priv_data;
388
389#ifdef STATS
390 print_stats();
391#endif
392 MPV_common_end(s);
393 if (s->out_format == FMT_MJPEG)
394 mjpeg_close(s);
37fbfd0a 395
de6d9b64
FB
396 return 0;
397}
398
399/* draw the edges of width 'w' of an image of size width, height */
3d9fccbf 400static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w)
de6d9b64
FB
401{
402 UINT8 *ptr, *last_line;
403 int i;
404
405 last_line = buf + (height - 1) * wrap;
406 for(i=0;i<w;i++) {
407 /* top and bottom */
408 memcpy(buf - (i + 1) * wrap, buf, width);
409 memcpy(last_line + (i + 1) * wrap, last_line, width);
410 }
411 /* left and right */
412 ptr = buf;
413 for(i=0;i<height;i++) {
414 memset(ptr - w, ptr[0], w);
415 memset(ptr + width, ptr[width-1], w);
416 ptr += wrap;
417 }
418 /* corners */
419 for(i=0;i<w;i++) {
420 memset(buf - (i + 1) * wrap - w, buf[0], w); /* top left */
421 memset(buf - (i + 1) * wrap + width, buf[width-1], w); /* top right */
422 memset(last_line + (i + 1) * wrap - w, last_line[0], w); /* top left */
423 memset(last_line + (i + 1) * wrap + width, last_line[width-1], w); /* top right */
424 }
425}
426
de6d9b64
FB
427/* generic function for encode/decode called before a frame is coded/decoded */
428void MPV_frame_start(MpegEncContext *s)
429{
430 int i;
431 UINT8 *tmp;
432
425dddb7 433 s->mb_skiped = 0;
de6d9b64
FB
434 if (s->pict_type == B_TYPE) {
435 for(i=0;i<3;i++) {
436 s->current_picture[i] = s->aux_picture[i];
437 }
438 } else {
6f91bcd1 439 s->last_non_b_pict_type= s->pict_type;
de6d9b64
FB
440 for(i=0;i<3;i++) {
441 /* swap next and last */
442 tmp = s->last_picture[i];
443 s->last_picture[i] = s->next_picture[i];
444 s->next_picture[i] = tmp;
445 s->current_picture[i] = tmp;
446 }
447 }
448}
21af69f7 449
de6d9b64
FB
450/* generic function for encode/decode called after a frame has been coded/decoded */
451void MPV_frame_end(MpegEncContext *s)
452{
453 /* draw edge for correct motion prediction if outside */
2f349de2 454 if (s->pict_type != B_TYPE && !s->intra_only) {
1699d376 455 if(s->avctx==NULL || s->avctx->codec->id!=CODEC_ID_MPEG4 || s->divx_version==500){
393fe8dd
A
456 draw_edges(s->current_picture[0], s->linesize, s->mb_width*16, s->mb_height*16, EDGE_WIDTH);
457 draw_edges(s->current_picture[1], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
458 draw_edges(s->current_picture[2], s->linesize/2, s->mb_width*8, s->mb_height*8, EDGE_WIDTH/2);
ef093645 459 }else{
1699d376 460 /* mpeg4? / opendivx / xvid */
de6d9b64
FB
461 draw_edges(s->current_picture[0], s->linesize, s->width, s->height, EDGE_WIDTH);
462 draw_edges(s->current_picture[1], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
463 draw_edges(s->current_picture[2], s->linesize/2, s->width/2, s->height/2, EDGE_WIDTH/2);
ef093645 464 }
de6d9b64 465 }
5975626d 466 emms_c();
de6d9b64
FB
467}
468
469int MPV_encode_picture(AVCodecContext *avctx,
470 unsigned char *buf, int buf_size, void *data)
471{
472 MpegEncContext *s = avctx->priv_data;
473 AVPicture *pict = data;
474 int i, j;
475
476 if (s->fixed_qscale)
477 s->qscale = avctx->quality;
478
479 init_put_bits(&s->pb, buf, buf_size, NULL, NULL);
480
481 if (!s->intra_only) {
482 /* first picture of GOP is intra */
483 if ((s->picture_number % s->gop_size) == 0)
484 s->pict_type = I_TYPE;
485 else
486 s->pict_type = P_TYPE;
487 } else {
488 s->pict_type = I_TYPE;
489 }
de6d9b64
FB
490
491 MPV_frame_start(s);
2f349de2 492
de6d9b64
FB
493 for(i=0;i<3;i++) {
494 UINT8 *src = pict->data[i];
495 UINT8 *dest = s->current_picture[i];
496 int src_wrap = pict->linesize[i];
497 int dest_wrap = s->linesize;
498 int w = s->width;
499 int h = s->height;
500
501 if (i >= 1) {
502 dest_wrap >>= 1;
503 w >>= 1;
504 h >>= 1;
505 }
506
37fbfd0a
J
507 if(dest_wrap==src_wrap){
508 s->new_picture[i] = pict->data[i];
509 } else {
2f349de2
MN
510 for(j=0;j<h;j++) {
511 memcpy(dest, src, w);
512 dest += dest_wrap;
513 src += src_wrap;
514 }
0b2540a0 515 s->new_picture[i] = s->current_picture[i];
37fbfd0a 516 }
de6d9b64
FB
517 }
518
519 encode_picture(s, s->picture_number);
bd31a775 520 avctx->key_frame = (s->pict_type == I_TYPE);
de6d9b64
FB
521
522 MPV_frame_end(s);
523 s->picture_number++;
524
525 if (s->out_format == FMT_MJPEG)
526 mjpeg_picture_trailer(s);
527
528 flush_put_bits(&s->pb);
9cdd6a24
MN
529 s->last_frame_bits= s->frame_bits;
530 s->frame_bits = (pbBufPtr(&s->pb) - s->pb.buf) * 8;
531 s->total_bits += s->frame_bits;
17592475 532
de6d9b64 533 avctx->quality = s->qscale;
43f1708f
J
534 if (avctx->get_psnr) {
535 /* At this point pict->data should have the original frame */
536 /* an s->current_picture should have the coded/decoded frame */
537 get_psnr(pict->data, s->current_picture,
538 pict->linesize, s->linesize, avctx);
539 }
17592475 540 return pbBufPtr(&s->pb) - s->pb.buf;
de6d9b64
FB
541}
542
543static inline int clip(int a, int amin, int amax)
544{
545 if (a < amin)
546 return amin;
547 else if (a > amax)
548 return amax;
549 else
550 return a;
551}
552
44eb4951
MN
553static inline void gmc1_motion(MpegEncContext *s,
554 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
555 int dest_offset,
556 UINT8 **ref_picture, int src_offset,
557 int h)
558{
559 UINT8 *ptr;
560 int dxy, offset, mx, my, src_x, src_y, height, linesize;
561 int motion_x, motion_y;
562
d6231b9e 563 if(s->real_sprite_warping_points>1) printf("more than 1 warp point isnt supported\n");
44eb4951
MN
564 motion_x= s->sprite_offset[0][0];
565 motion_y= s->sprite_offset[0][1];
566 src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
567 src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
568 motion_x<<=(3-s->sprite_warping_accuracy);
569 motion_y<<=(3-s->sprite_warping_accuracy);
570 src_x = clip(src_x, -16, s->width);
571 if (src_x == s->width)
572 motion_x =0;
573 src_y = clip(src_y, -16, s->height);
574 if (src_y == s->height)
575 motion_y =0;
576
577 linesize = s->linesize;
578 ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
579
580 dest_y+=dest_offset;
581 gmc1(dest_y , ptr , linesize, h, motion_x&15, motion_y&15, s->no_rounding);
582 gmc1(dest_y+8, ptr+8, linesize, h, motion_x&15, motion_y&15, s->no_rounding);
583
584 motion_x= s->sprite_offset[1][0];
585 motion_y= s->sprite_offset[1][1];
586 src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
587 src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
588 motion_x<<=(3-s->sprite_warping_accuracy);
589 motion_y<<=(3-s->sprite_warping_accuracy);
590 src_x = clip(src_x, -8, s->width>>1);
591 if (src_x == s->width>>1)
592 motion_x =0;
593 src_y = clip(src_y, -8, s->height>>1);
594 if (src_y == s->height>>1)
595 motion_y =0;
596
597 offset = (src_y * linesize>>1) + src_x + (src_offset>>1);
598 ptr = ref_picture[1] + offset;
599 gmc1(dest_cb + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
600 ptr = ref_picture[2] + offset;
601 gmc1(dest_cr + (dest_offset>>1), ptr, linesize>>1, h>>1, motion_x&15, motion_y&15, s->no_rounding);
602
603 return;
604}
605
de6d9b64
FB
606/* apply one mpeg motion vector to the three components */
607static inline void mpeg_motion(MpegEncContext *s,
608 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
609 int dest_offset,
610 UINT8 **ref_picture, int src_offset,
611 int field_based, op_pixels_func *pix_op,
612 int motion_x, int motion_y, int h)
613{
614 UINT8 *ptr;
615 int dxy, offset, mx, my, src_x, src_y, height, linesize;
44eb4951
MN
616if(s->quarter_sample)
617{
618 motion_x>>=1;
619 motion_y>>=1;
620}
de6d9b64
FB
621 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
622 src_x = s->mb_x * 16 + (motion_x >> 1);
623 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 1);
624
625 /* WARNING: do no forget half pels */
626 height = s->height >> field_based;
627 src_x = clip(src_x, -16, s->width);
628 if (src_x == s->width)
629 dxy &= ~1;
630 src_y = clip(src_y, -16, height);
631 if (src_y == height)
632 dxy &= ~2;
633 linesize = s->linesize << field_based;
634 ptr = ref_picture[0] + (src_y * linesize) + (src_x) + src_offset;
635 dest_y += dest_offset;
636 pix_op[dxy](dest_y, ptr, linesize, h);
637 pix_op[dxy](dest_y + 8, ptr + 8, linesize, h);
638
639 if (s->out_format == FMT_H263) {
640 dxy = 0;
641 if ((motion_x & 3) != 0)
642 dxy |= 1;
643 if ((motion_y & 3) != 0)
644 dxy |= 2;
645 mx = motion_x >> 2;
646 my = motion_y >> 2;
647 } else {
648 mx = motion_x / 2;
649 my = motion_y / 2;
650 dxy = ((my & 1) << 1) | (mx & 1);
651 mx >>= 1;
652 my >>= 1;
653 }
654
655 src_x = s->mb_x * 8 + mx;
656 src_y = s->mb_y * (8 >> field_based) + my;
657 src_x = clip(src_x, -8, s->width >> 1);
658 if (src_x == (s->width >> 1))
659 dxy &= ~1;
660 src_y = clip(src_y, -8, height >> 1);
661 if (src_y == (height >> 1))
662 dxy &= ~2;
663
664 offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
665 ptr = ref_picture[1] + offset;
666 pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
667 ptr = ref_picture[2] + offset;
668 pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
669}
670
44eb4951
MN
671static inline void qpel_motion(MpegEncContext *s,
672 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
673 int dest_offset,
674 UINT8 **ref_picture, int src_offset,
675 int field_based, op_pixels_func *pix_op,
676 qpel_mc_func *qpix_op,
677 int motion_x, int motion_y, int h)
678{
679 UINT8 *ptr;
680 int dxy, offset, mx, my, src_x, src_y, height, linesize;
681
682 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
683 src_x = s->mb_x * 16 + (motion_x >> 2);
684 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
685
686 height = s->height >> field_based;
687 src_x = clip(src_x, -16, s->width);
688 if (src_x == s->width)
689 dxy &= ~3;
690 src_y = clip(src_y, -16, height);
691 if (src_y == height)
692 dxy &= ~12;
693 linesize = s->linesize << field_based;
694 ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
695 dest_y += dest_offset;
696//printf("%d %d %d\n", src_x, src_y, dxy);
697 qpix_op[dxy](dest_y , ptr , linesize, linesize, motion_x&3, motion_y&3);
698 qpix_op[dxy](dest_y + 8, ptr + 8, linesize, linesize, motion_x&3, motion_y&3);
699 qpix_op[dxy](dest_y + linesize*8 , ptr + linesize*8 , linesize, linesize, motion_x&3, motion_y&3);
700 qpix_op[dxy](dest_y + linesize*8 + 8, ptr + linesize*8 + 8, linesize, linesize, motion_x&3, motion_y&3);
701
702 mx= (motion_x>>1) | (motion_x&1);
703 my= (motion_y>>1) | (motion_y&1);
704
705 dxy = 0;
706 if ((mx & 3) != 0)
707 dxy |= 1;
708 if ((my & 3) != 0)
709 dxy |= 2;
710 mx = mx >> 2;
711 my = my >> 2;
712
713 src_x = s->mb_x * 8 + mx;
714 src_y = s->mb_y * (8 >> field_based) + my;
715 src_x = clip(src_x, -8, s->width >> 1);
716 if (src_x == (s->width >> 1))
717 dxy &= ~1;
718 src_y = clip(src_y, -8, height >> 1);
719 if (src_y == (height >> 1))
720 dxy &= ~2;
721
722 offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1);
723 ptr = ref_picture[1] + offset;
724 pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
725 ptr = ref_picture[2] + offset;
726 pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1);
727}
728
729
de6d9b64
FB
730static inline void MPV_motion(MpegEncContext *s,
731 UINT8 *dest_y, UINT8 *dest_cb, UINT8 *dest_cr,
732 int dir, UINT8 **ref_picture,
44eb4951 733 op_pixels_func *pix_op, qpel_mc_func *qpix_op)
de6d9b64
FB
734{
735 int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y;
736 int mb_x, mb_y, i;
737 UINT8 *ptr, *dest;
738
739 mb_x = s->mb_x;
740 mb_y = s->mb_y;
741
742 switch(s->mv_type) {
743 case MV_TYPE_16X16:
44eb4951
MN
744 if(s->mcsel){
745#if 0
746 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
747 ref_picture, 0,
748 0, pix_op,
749 s->sprite_offset[0][0]>>3,
750 s->sprite_offset[0][1]>>3,
751 16);
752#else
753 gmc1_motion(s, dest_y, dest_cb, dest_cr, 0,
754 ref_picture, 0,
755 16);
756#endif
6f91bcd1 757 }else if(s->quarter_sample && dir==0){ //FIXME
44eb4951
MN
758 qpel_motion(s, dest_y, dest_cb, dest_cr, 0,
759 ref_picture, 0,
760 0, pix_op, qpix_op,
761 s->mv[dir][0][0], s->mv[dir][0][1], 16);
762 }else{
763 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
764 ref_picture, 0,
765 0, pix_op,
766 s->mv[dir][0][0], s->mv[dir][0][1], 16);
767 }
de6d9b64
FB
768 break;
769 case MV_TYPE_8X8:
770 for(i=0;i<4;i++) {
771 motion_x = s->mv[dir][i][0];
772 motion_y = s->mv[dir][i][1];
773
774 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
775 src_x = mb_x * 16 + (motion_x >> 1) + (i & 1) * 8;
776 src_y = mb_y * 16 + (motion_y >> 1) + ((i >> 1) & 1) * 8;
777
778 /* WARNING: do no forget half pels */
779 src_x = clip(src_x, -16, s->width);
780 if (src_x == s->width)
781 dxy &= ~1;
782 src_y = clip(src_y, -16, s->height);
783 if (src_y == s->height)
784 dxy &= ~2;
785
786 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
787 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
788 pix_op[dxy](dest, ptr, s->linesize, 8);
789 }
790 /* In case of 8X8, we construct a single chroma motion vector
791 with a special rounding */
792 mx = 0;
793 my = 0;
794 for(i=0;i<4;i++) {
795 mx += s->mv[dir][i][0];
796 my += s->mv[dir][i][1];
797 }
798 if (mx >= 0)
799 mx = (h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
800 else {
801 mx = -mx;
802 mx = -(h263_chroma_roundtab[mx & 0xf] + ((mx >> 3) & ~1));
803 }
804 if (my >= 0)
805 my = (h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
806 else {
807 my = -my;
808 my = -(h263_chroma_roundtab[my & 0xf] + ((my >> 3) & ~1));
809 }
810 dxy = ((my & 1) << 1) | (mx & 1);
811 mx >>= 1;
812 my >>= 1;
813
814 src_x = mb_x * 8 + mx;
815 src_y = mb_y * 8 + my;
816 src_x = clip(src_x, -8, s->width/2);
817 if (src_x == s->width/2)
818 dxy &= ~1;
819 src_y = clip(src_y, -8, s->height/2);
820 if (src_y == s->height/2)
821 dxy &= ~2;
822
823 offset = (src_y * (s->linesize >> 1)) + src_x;
824 ptr = ref_picture[1] + offset;
825 pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8);
826 ptr = ref_picture[2] + offset;
827 pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8);
828 break;
829 case MV_TYPE_FIELD:
830 if (s->picture_structure == PICT_FRAME) {
831 /* top field */
832 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
833 ref_picture, s->field_select[dir][0] ? s->linesize : 0,
834 1, pix_op,
835 s->mv[dir][0][0], s->mv[dir][0][1], 8);
836 /* bottom field */
837 mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
838 ref_picture, s->field_select[dir][1] ? s->linesize : 0,
839 1, pix_op,
840 s->mv[dir][1][0], s->mv[dir][1][1], 8);
841 } else {
842
843
844 }
845 break;
846 }
847}
848
849
850/* put block[] to dest[] */
851static inline void put_dct(MpegEncContext *s,
852 DCTELEM *block, int i, UINT8 *dest, int line_size)
853{
854 if (!s->mpeg2)
21af69f7 855 s->dct_unquantize(s, block, i, s->qscale);
4af7bcc1 856 ff_idct (block);
de6d9b64
FB
857 put_pixels_clamped(block, dest, line_size);
858}
859
860/* add block[] to dest[] */
861static inline void add_dct(MpegEncContext *s,
862 DCTELEM *block, int i, UINT8 *dest, int line_size)
863{
864 if (s->block_last_index[i] >= 0) {
865 if (!s->mpeg2)
3d9fccbf 866 if(s->encoding || (!s->h263_msmpeg4))
badaf88e 867 s->dct_unquantize(s, block, i, s->qscale);
4af7bcc1 868 ff_idct (block);
de6d9b64
FB
869 add_pixels_clamped(block, dest, line_size);
870 }
871}
872
873/* generic function called after a macroblock has been parsed by the
874 decoder or after it has been encoded by the encoder.
875
876 Important variables used:
877 s->mb_intra : true if intra macroblock
878 s->mv_dir : motion vector direction
879 s->mv_type : motion vector type
880 s->mv : motion vector
881 s->interlaced_dct : true if interlaced dct used (mpeg2)
882 */
883void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
884{
8257bf05 885 int mb_x, mb_y;
de6d9b64
FB
886 int dct_linesize, dct_offset;
887 op_pixels_func *op_pix;
44eb4951 888 qpel_mc_func *op_qpix;
de6d9b64
FB
889
890 mb_x = s->mb_x;
891 mb_y = s->mb_y;
892
79e7b305
A
893#ifdef FF_POSTPROCESS
894 quant_store[mb_y][mb_x]=s->qscale;
895 //printf("[%02d][%02d] %d\n",mb_x,mb_y,s->qscale);
896#endif
897
de6d9b64
FB
898 /* update DC predictors for P macroblocks */
899 if (!s->mb_intra) {
9e15ad28 900 if (s->h263_pred || s->h263_aic) {
bff6ecaa
MN
901 if(s->mbintra_table[mb_x + mb_y*s->mb_width])
902 {
8257bf05 903 int wrap, xy, v;
bff6ecaa 904 s->mbintra_table[mb_x + mb_y*s->mb_width]=0;
de6d9b64 905 wrap = 2 * s->mb_width + 2;
8257bf05 906 xy = 2 * mb_x + 1 + (2 * mb_y + 1) * wrap;
de6d9b64 907 v = 1024;
bff6ecaa 908
9e15ad28 909 s->dc_val[0][xy] = v;
8257bf05
ZK
910 s->dc_val[0][xy + 1] = v;
911 s->dc_val[0][xy + wrap] = v;
912 s->dc_val[0][xy + 1 + wrap] = v;
de6d9b64 913 /* ac pred */
8257bf05
ZK
914 memset(s->ac_val[0][xy], 0, 16 * sizeof(INT16));
915 memset(s->ac_val[0][xy + 1], 0, 16 * sizeof(INT16));
916 memset(s->ac_val[0][xy + wrap], 0, 16 * sizeof(INT16));
917 memset(s->ac_val[0][xy + 1 + wrap], 0, 16 * sizeof(INT16));
de6d9b64 918 if (s->h263_msmpeg4) {
8257bf05
ZK
919 s->coded_block[xy] = 0;
920 s->coded_block[xy + 1] = 0;
921 s->coded_block[xy + wrap] = 0;
922 s->coded_block[xy + 1 + wrap] = 0;
de6d9b64
FB
923 }
924 /* chroma */
925 wrap = s->mb_width + 2;
8257bf05
ZK
926 xy = mb_x + 1 + (mb_y + 1) * wrap;
927 s->dc_val[1][xy] = v;
928 s->dc_val[2][xy] = v;
de6d9b64 929 /* ac pred */
8257bf05
ZK
930 memset(s->ac_val[1][xy], 0, 16 * sizeof(INT16));
931 memset(s->ac_val[2][xy], 0, 16 * sizeof(INT16));
bff6ecaa 932 }
de6d9b64
FB
933 } else {
934 s->last_dc[0] = 128 << s->intra_dc_precision;
935 s->last_dc[1] = 128 << s->intra_dc_precision;
936 s->last_dc[2] = 128 << s->intra_dc_precision;
937 }
938 }
9e15ad28 939 else if (s->h263_pred || s->h263_aic)
bff6ecaa
MN
940 s->mbintra_table[mb_x + mb_y*s->mb_width]=1;
941
6f91bcd1 942 /* update motion predictor, not for B-frames as they need the motion_val from the last P/S-Frame */
de6d9b64 943 if (s->out_format == FMT_H263) {
6f91bcd1 944 if(s->pict_type!=B_TYPE){
8257bf05 945 int xy, wrap, motion_x, motion_y;
de6d9b64 946
de6d9b64 947 wrap = 2 * s->mb_width + 2;
8257bf05 948 xy = 2 * mb_x + 1 + (2 * mb_y + 1) * wrap;
de6d9b64
FB
949 if (s->mb_intra) {
950 motion_x = 0;
951 motion_y = 0;
952 goto motion_init;
953 } else if (s->mv_type == MV_TYPE_16X16) {
954 motion_x = s->mv[0][0][0];
955 motion_y = s->mv[0][0][1];
956 motion_init:
957 /* no update if 8X8 because it has been done during parsing */
8257bf05
ZK
958 s->motion_val[xy][0] = motion_x;
959 s->motion_val[xy][1] = motion_y;
960 s->motion_val[xy + 1][0] = motion_x;
961 s->motion_val[xy + 1][1] = motion_y;
962 s->motion_val[xy + wrap][0] = motion_x;
963 s->motion_val[xy + wrap][1] = motion_y;
964 s->motion_val[xy + 1 + wrap][0] = motion_x;
965 s->motion_val[xy + 1 + wrap][1] = motion_y;
de6d9b64 966 }
6f91bcd1 967 }
de6d9b64
FB
968 }
969
970 if (!s->intra_only) {
971 UINT8 *dest_y, *dest_cb, *dest_cr;
3bb4e23a
FB
972 UINT8 *mbskip_ptr;
973
974 /* avoid copy if macroblock skipped in last frame too */
21af69f7 975 if (!s->encoding && s->pict_type != B_TYPE) {
3bb4e23a
FB
976 mbskip_ptr = &s->mbskip_table[s->mb_y * s->mb_width + s->mb_x];
977 if (s->mb_skiped) {
978 s->mb_skiped = 0;
979 /* if previous was skipped too, then nothing to do ! */
980 if (*mbskip_ptr != 0)
981 goto the_end;
982 *mbskip_ptr = 1; /* indicate that this time we skiped it */
983 } else {
984 *mbskip_ptr = 0; /* not skipped */
985 }
986 }
de6d9b64
FB
987
988 dest_y = s->current_picture[0] + (mb_y * 16 * s->linesize) + mb_x * 16;
989 dest_cb = s->current_picture[1] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
990 dest_cr = s->current_picture[2] + (mb_y * 8 * (s->linesize >> 1)) + mb_x * 8;
991
992 if (s->interlaced_dct) {
993 dct_linesize = s->linesize * 2;
994 dct_offset = s->linesize;
995 } else {
996 dct_linesize = s->linesize;
997 dct_offset = s->linesize * 8;
998 }
999
1000 if (!s->mb_intra) {
1001 /* motion handling */
44eb4951 1002 if (!s->no_rounding){
de6d9b64 1003 op_pix = put_pixels_tab;
44eb4951
MN
1004 op_qpix= qpel_mc_rnd_tab;
1005 }else{
de6d9b64 1006 op_pix = put_no_rnd_pixels_tab;
44eb4951
MN
1007 op_qpix= qpel_mc_no_rnd_tab;
1008 }
de6d9b64
FB
1009
1010 if (s->mv_dir & MV_DIR_FORWARD) {
44eb4951 1011 MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture, op_pix, op_qpix);
de6d9b64
FB
1012 if (!s->no_rounding)
1013 op_pix = avg_pixels_tab;
1014 else
1015 op_pix = avg_no_rnd_pixels_tab;
1016 }
1017 if (s->mv_dir & MV_DIR_BACKWARD) {
44eb4951 1018 MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture, op_pix, op_qpix);
de6d9b64
FB
1019 }
1020
1021 /* add dct residue */
1022 add_dct(s, block[0], 0, dest_y, dct_linesize);
1023 add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1024 add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1025 add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1026
51454751
FB
1027 add_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1028 add_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
de6d9b64
FB
1029 } else {
1030 /* dct only in intra block */
1031 put_dct(s, block[0], 0, dest_y, dct_linesize);
1032 put_dct(s, block[1], 1, dest_y + 8, dct_linesize);
1033 put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
1034 put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
1035
51454751
FB
1036 put_dct(s, block[4], 4, dest_cb, s->linesize >> 1);
1037 put_dct(s, block[5], 5, dest_cr, s->linesize >> 1);
de6d9b64
FB
1038 }
1039 }
3bb4e23a
FB
1040 the_end:
1041 emms_c();
de6d9b64
FB
1042}
1043
1044static void encode_picture(MpegEncContext *s, int picture_number)
1045{
81401c1f 1046 int mb_x, mb_y, wrap, last_gob, pdif = 0;
de6d9b64 1047 UINT8 *ptr;
de6d9b64
FB
1048 int i, motion_x, motion_y;
1049
1050 s->picture_number = picture_number;
9cdd6a24
MN
1051
1052 s->last_mc_mb_var = s->mc_mb_var;
1053 /* Reset the average MB variance */
1054 s->avg_mb_var = 0;
1055 s->mc_mb_var = 0;
1056
1057 /* Estimate motion for every MB */
1058 for(mb_y=0; mb_y < s->mb_height; mb_y++) {
1059 for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1060 int xy= mb_y * s->mb_width + mb_x;
1061 s->mb_x = mb_x;
1062 s->mb_y = mb_y;
1063
1064 /* compute motion vector and macro block type (intra or non intra) */
1065 motion_x = 0;
1066 motion_y = 0;
1067 if (s->pict_type == P_TYPE) {
1068 s->mb_intra = estimate_motion(s, mb_x, mb_y,
1069 &motion_x,
1070 &motion_y);
1071 } else {
1072 s->mb_intra = 1;
1073 }
1074 /* Store MB type and MV */
1075 s->mb_type[xy] = s->mb_intra;
1076 s->mv_table[0][xy] = motion_x;
1077 s->mv_table[1][xy] = motion_y;
1078 }
1079 }
1080
bd31a775
MN
1081 if(s->avg_mb_var < s->mc_mb_var && s->pict_type != B_TYPE){ //FIXME subtract MV bits
1082 int i;
1083 s->pict_type= I_TYPE;
1084 for(i=0; i<s->mb_height*s->mb_width; i++){
1085 s->mb_type[i] = I_TYPE;
1086 s->mv_table[0][i] = 0;
1087 s->mv_table[1][i] = 0;
1088 }
1089 }
1090
1091// printf("%d %d\n", s->avg_mb_var, s->mc_mb_var);
1092
de6d9b64
FB
1093 if (!s->fixed_qscale)
1094 s->qscale = rate_estimate_qscale(s);
1095
1096 /* precompute matrix */
1097 if (s->out_format == FMT_MJPEG) {
1098 /* for mjpeg, we do include qscale in the matrix */
1099 s->intra_matrix[0] = default_intra_matrix[0];
1100 for(i=1;i<64;i++)
1101 s->intra_matrix[i] = (default_intra_matrix[i] * s->qscale) >> 3;
2f349de2 1102 convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, 8);
de6d9b64 1103 } else {
2f349de2
MN
1104 convert_matrix(s->q_intra_matrix, s->q_intra_matrix16, s->intra_matrix, s->qscale);
1105 convert_matrix(s->q_non_intra_matrix, s->q_non_intra_matrix16, s->non_intra_matrix, s->qscale);
de6d9b64
FB
1106 }
1107
1108 switch(s->out_format) {
1109 case FMT_MJPEG:
1110 mjpeg_picture_header(s);
1111 break;
1112 case FMT_H263:
1113 if (s->h263_msmpeg4)
1114 msmpeg4_encode_picture_header(s, picture_number);
1115 else if (s->h263_pred)
1116 mpeg4_encode_picture_header(s, picture_number);
1117 else if (s->h263_rv10)
1118 rv10_encode_picture_header(s, picture_number);
1119 else
1120 h263_encode_picture_header(s, picture_number);
1121 break;
1122 case FMT_MPEG1:
1123 mpeg1_encode_picture_header(s, picture_number);
1124 break;
1125 }
1126
1127 /* init last dc values */
1128 /* note: quant matrix value (8) is implied here */
1129 s->last_dc[0] = 128;
1130 s->last_dc[1] = 128;
1131 s->last_dc[2] = 128;
1132 s->mb_incr = 1;
1133 s->last_mv[0][0][0] = 0;
1134 s->last_mv[0][0][1] = 0;
1135 s->mv_type = MV_TYPE_16X16;
1136 s->mv_dir = MV_DIR_FORWARD;
1137
644d98a4 1138 /* Get the GOB height based on picture height */
81401c1f 1139 if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4) {
644d98a4
J
1140 if (s->height <= 400)
1141 s->gob_index = 1;
1142 else if (s->height <= 800)
1143 s->gob_index = 2;
1144 else
1145 s->gob_index = 4;
1146 }
9cdd6a24 1147
e03c341e
J
1148 s->avg_mb_var = s->avg_mb_var / s->mb_num;
1149
4278e7a6
MN
1150 s->block_wrap[0]=
1151 s->block_wrap[1]=
1152 s->block_wrap[2]=
1153 s->block_wrap[3]= s->mb_width*2 + 2;
1154 s->block_wrap[4]=
1155 s->block_wrap[5]= s->mb_width + 2;
e03c341e
J
1156 for(mb_y=0; mb_y < s->mb_height; mb_y++) {
1157 /* Put GOB header based on RTP MTU */
1158 /* TODO: Put all this stuff in a separate generic function */
1159 if (s->rtp_mode) {
1160 if (!mb_y) {
1161 s->ptr_lastgob = s->pb.buf;
1162 s->ptr_last_mb_line = s->pb.buf;
1163 } else if (s->out_format == FMT_H263 && !s->h263_pred && !s->h263_msmpeg4 && !(mb_y % s->gob_index)) {
1164 last_gob = h263_encode_gob_header(s, mb_y);
1165 if (last_gob) {
1166 s->first_gob_line = 1;
1167 }
1168 }
1169 }
1170
4278e7a6
MN
1171 s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
1172 s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
1173 s->block_index[2]= s->block_wrap[0]*(mb_y*2 + 2) - 1;
1174 s->block_index[3]= s->block_wrap[0]*(mb_y*2 + 2);
1175 s->block_index[4]= s->block_wrap[4]*(mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2);
1176 s->block_index[5]= s->block_wrap[4]*(mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2);
37fbfd0a
J
1177 for(mb_x=0; mb_x < s->mb_width; mb_x++) {
1178
1179 s->mb_x = mb_x;
1180 s->mb_y = mb_y;
4278e7a6
MN
1181 s->block_index[0]+=2;
1182 s->block_index[1]+=2;
1183 s->block_index[2]+=2;
1184 s->block_index[3]+=2;
1185 s->block_index[4]++;
1186 s->block_index[5]++;
37fbfd0a
J
1187#if 0
1188 /* compute motion vector and macro block type (intra or non intra) */
1189 motion_x = 0;
1190 motion_y = 0;
1191 if (s->pict_type == P_TYPE) {
1192 s->mb_intra = estimate_motion(s, mb_x, mb_y,
1193 &motion_x,
1194 &motion_y);
1195 } else {
1196 s->mb_intra = 1;
1197 }
1198#endif
de6d9b64 1199
37fbfd0a
J
1200 s->mb_intra = s->mb_type[mb_y * s->mb_width + mb_x];
1201 motion_x = s->mv_table[0][mb_y * s->mb_width + mb_x];
1202 motion_y = s->mv_table[1][mb_y * s->mb_width + mb_x];
1203
de6d9b64
FB
1204 /* get the pixels */
1205 wrap = s->linesize;
1206 ptr = s->new_picture[0] + (mb_y * 16 * wrap) + mb_x * 16;
21af69f7
FB
1207 get_pixels(s->block[0], ptr, wrap);
1208 get_pixels(s->block[1], ptr + 8, wrap);
1209 get_pixels(s->block[2], ptr + 8 * wrap, wrap);
1210 get_pixels(s->block[3], ptr + 8 * wrap + 8, wrap);
de6d9b64
FB
1211 wrap = s->linesize >> 1;
1212 ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
21af69f7 1213 get_pixels(s->block[4], ptr, wrap);
de6d9b64
FB
1214
1215 wrap = s->linesize >> 1;
1216 ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
21af69f7 1217 get_pixels(s->block[5], ptr, wrap);
de6d9b64
FB
1218
1219 /* subtract previous frame if non intra */
1220 if (!s->mb_intra) {
1221 int dxy, offset, mx, my;
1222
1223 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
1224 ptr = s->last_picture[0] +
1225 ((mb_y * 16 + (motion_y >> 1)) * s->linesize) +
1226 (mb_x * 16 + (motion_x >> 1));
1227
21af69f7
FB
1228 sub_pixels_2(s->block[0], ptr, s->linesize, dxy);
1229 sub_pixels_2(s->block[1], ptr + 8, s->linesize, dxy);
1230 sub_pixels_2(s->block[2], ptr + s->linesize * 8, s->linesize, dxy);
1231 sub_pixels_2(s->block[3], ptr + 8 + s->linesize * 8, s->linesize ,dxy);
de6d9b64
FB
1232
1233 if (s->out_format == FMT_H263) {
1234 /* special rounding for h263 */
1235 dxy = 0;
1236 if ((motion_x & 3) != 0)
1237 dxy |= 1;
1238 if ((motion_y & 3) != 0)
1239 dxy |= 2;
1240 mx = motion_x >> 2;
1241 my = motion_y >> 2;
1242 } else {
1243 mx = motion_x / 2;
1244 my = motion_y / 2;
1245 dxy = ((my & 1) << 1) | (mx & 1);
1246 mx >>= 1;
1247 my >>= 1;
1248 }
1249 offset = ((mb_y * 8 + my) * (s->linesize >> 1)) + (mb_x * 8 + mx);
1250 ptr = s->last_picture[1] + offset;
21af69f7 1251 sub_pixels_2(s->block[4], ptr, s->linesize >> 1, dxy);
de6d9b64 1252 ptr = s->last_picture[2] + offset;
21af69f7 1253 sub_pixels_2(s->block[5], ptr, s->linesize >> 1, dxy);
de6d9b64 1254 }
3bb4e23a 1255 emms_c();
d140623f
J
1256
1257#if 0
1258 {
1259 float adap_parm;
1260
1261 adap_parm = ((s->avg_mb_var << 1) + s->mb_var[s->mb_width*mb_y+mb_x] + 1.0) /
1262 ((s->mb_var[s->mb_width*mb_y+mb_x] << 1) + s->avg_mb_var + 1.0);
1263
1264 printf("\ntype=%c qscale=%2d adap=%0.2f dquant=%4.2f var=%4d avgvar=%4d",
1265 (s->mb_type[s->mb_width*mb_y+mb_x] > 0) ? 'I' : 'P',
1266 s->qscale, adap_parm, s->qscale*adap_parm,
1267 s->mb_var[s->mb_width*mb_y+mb_x], s->avg_mb_var);
1268 }
1269#endif
de6d9b64
FB
1270 /* DCT & quantize */
1271 if (s->h263_msmpeg4) {
1272 msmpeg4_dc_scale(s);
1273 } else if (s->h263_pred) {
1274 h263_dc_scale(s);
1275 } else {
1276 /* default quantization values */
1277 s->y_dc_scale = 8;
1278 s->c_dc_scale = 8;
1279 }
de6d9b64 1280 for(i=0;i<6;i++) {
2f349de2 1281 s->block_last_index[i] = dct_quantize(s, s->block[i], i, s->qscale);
de6d9b64
FB
1282 }
1283
1284 /* huffman encode */
1285 switch(s->out_format) {
1286 case FMT_MPEG1:
21af69f7 1287 mpeg1_encode_mb(s, s->block, motion_x, motion_y);
de6d9b64
FB
1288 break;
1289 case FMT_H263:
1290 if (s->h263_msmpeg4)
21af69f7 1291 msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
d6231b9e
MN
1292 else if(s->h263_pred)
1293 mpeg4_encode_mb(s, s->block, motion_x, motion_y);
de6d9b64 1294 else
21af69f7 1295 h263_encode_mb(s, s->block, motion_x, motion_y);
de6d9b64
FB
1296 break;
1297 case FMT_MJPEG:
21af69f7 1298 mjpeg_encode_mb(s, s->block);
de6d9b64
FB
1299 break;
1300 }
1301
1302 /* decompress blocks so that we keep the state of the decoder */
1303 s->mv[0][0][0] = motion_x;
1304 s->mv[0][0][1] = motion_y;
1305
21af69f7 1306 MPV_decode_mb(s, s->block);
de6d9b64 1307 }
17592475
MN
1308
1309
81401c1f
J
1310 /* Obtain average GOB size for RTP */
1311 if (s->rtp_mode) {
1312 if (!mb_y)
17592475 1313 s->mb_line_avgsize = pbBufPtr(&s->pb) - s->ptr_last_mb_line;
81401c1f 1314 else if (!(mb_y % s->gob_index)) {
17592475
MN
1315 s->mb_line_avgsize = (s->mb_line_avgsize + pbBufPtr(&s->pb) - s->ptr_last_mb_line) >> 1;
1316 s->ptr_last_mb_line = pbBufPtr(&s->pb);
81401c1f
J
1317 }
1318 //fprintf(stderr, "\nMB line: %d\tSize: %u\tAvg. Size: %u", s->mb_y,
1319 // (s->pb.buf_ptr - s->ptr_last_mb_line), s->mb_line_avgsize);
1320 s->first_gob_line = 0;
1321 }
de6d9b64 1322 }
ae40484c 1323
2b9ab1d5 1324 if (s->h263_msmpeg4 && s->pict_type == I_TYPE)
ae40484c
MN
1325 msmpeg4_encode_ext_header(s);
1326
644d98a4
J
1327 //if (s->gob_number)
1328 // fprintf(stderr,"\nNumber of GOB: %d", s->gob_number);
81401c1f
J
1329
1330 /* Send the last GOB if RTP */
1331 if (s->rtp_mode) {
1332 flush_put_bits(&s->pb);
17592475 1333 pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
81401c1f
J
1334 /* Call the RTP callback to send the last GOB */
1335 if (s->rtp_callback)
1336 s->rtp_callback(s->ptr_lastgob, pdif, s->gob_number);
17592475 1337 s->ptr_lastgob = pbBufPtr(&s->pb);
81401c1f
J
1338 //fprintf(stderr,"\nGOB: %2d size: %d (last)", s->gob_number, pdif);
1339 }
1340
de6d9b64
FB
1341}
1342
2f349de2 1343static int dct_quantize_c(MpegEncContext *s,
de6d9b64
FB
1344 DCTELEM *block, int n,
1345 int qscale)
1346{
1347 int i, j, level, last_non_zero, q;
1348 const int *qmat;
4e3269e8
MN
1349 int minLevel, maxLevel;
1350
1351 if(s->avctx!=NULL && s->avctx->codec->id==CODEC_ID_MPEG4){
1352 /* mpeg4 */
1353 minLevel= -2048;
1354 maxLevel= 2047;
1355 }else if(s->out_format==FMT_MPEG1){
1356 /* mpeg1 */
1357 minLevel= -255;
1358 maxLevel= 255;
3cb32e3d
A
1359 }else if(s->out_format==FMT_MJPEG){
1360 /* (m)jpeg */
1361 minLevel= -1023;
1362 maxLevel= 1023;
4e3269e8
MN
1363 }else{
1364 /* h263 / msmpeg4 */
1365 minLevel= -128;
1366 maxLevel= 127;
1367 }
de6d9b64
FB
1368
1369 av_fdct (block);
1370
1a565432
FB
1371 /* we need this permutation so that we correct the IDCT
1372 permutation. will be moved into DCT code */
1373 block_permute(block);
1374
de6d9b64
FB
1375 if (s->mb_intra) {
1376 if (n < 4)
1377 q = s->y_dc_scale;
1378 else
1379 q = s->c_dc_scale;
1380 q = q << 3;
1381
1382 /* note: block[0] is assumed to be positive */
1383 block[0] = (block[0] + (q >> 1)) / q;
1384 i = 1;
1385 last_non_zero = 0;
1386 if (s->out_format == FMT_H263) {
1387 qmat = s->q_non_intra_matrix;
1388 } else {
1389 qmat = s->q_intra_matrix;
1390 }
1391 } else {
1392 i = 0;
1393 last_non_zero = -1;
1394 qmat = s->q_non_intra_matrix;
1395 }
1396
1397 for(;i<64;i++) {
1398 j = zigzag_direct[i];
1399 level = block[j];
1400 level = level * qmat[j];
1401#ifdef PARANOID
1402 {
1403 static int count = 0;
1404 int level1, level2, qmat1;
1405 double val;
1406 if (qmat == s->q_non_intra_matrix) {
1407 qmat1 = default_non_intra_matrix[j] * s->qscale;
1408 } else {
1409 qmat1 = default_intra_matrix[j] * s->qscale;
1410 }
1411 if (av_fdct != jpeg_fdct_ifast)
1412 val = ((double)block[j] * 8.0) / (double)qmat1;
1413 else
1414 val = ((double)block[j] * 8.0 * 2048.0) /
1415 ((double)qmat1 * aanscales[j]);
1416 level1 = (int)val;
1417 level2 = level / (1 << (QMAT_SHIFT - 3));
1418 if (level1 != level2) {
1419 fprintf(stderr, "%d: quant error qlevel=%d wanted=%d level=%d qmat1=%d qmat=%d wantedf=%0.6f\n",
1420 count, level2, level1, block[j], qmat1, qmat[j],
1421 val);
1422 count++;
1423 }
1424
1425 }
1426#endif
1427 /* XXX: slight error for the low range. Test should be equivalent to
1428 (level <= -(1 << (QMAT_SHIFT - 3)) || level >= (1 <<
1429 (QMAT_SHIFT - 3)))
1430 */
1431 if (((level << (31 - (QMAT_SHIFT - 3))) >> (31 - (QMAT_SHIFT - 3))) !=
1432 level) {
1433 level = level / (1 << (QMAT_SHIFT - 3));
1434 /* XXX: currently, this code is not optimal. the range should be:
1435 mpeg1: -255..255
1436 mpeg2: -2048..2047
1437 h263: -128..127
1438 mpeg4: -2048..2047
1439 */
4e3269e8
MN
1440 if (level > maxLevel)
1441 level = maxLevel;
1442 else if (level < minLevel)
1443 level = minLevel;
de6d9b64 1444
de6d9b64
FB
1445 block[j] = level;
1446 last_non_zero = i;
1447 } else {
1448 block[j] = 0;
1449 }
1450 }
1451 return last_non_zero;
1452}
1453
21af69f7
FB
1454static void dct_unquantize_mpeg1_c(MpegEncContext *s,
1455 DCTELEM *block, int n, int qscale)
de6d9b64 1456{
badaf88e 1457 int i, level, nCoeffs;
de6d9b64
FB
1458 const UINT16 *quant_matrix;
1459
badaf88e
MN
1460 if(s->alternate_scan) nCoeffs= 64;
1461 else nCoeffs= s->block_last_index[n]+1;
1462
de6d9b64
FB
1463 if (s->mb_intra) {
1464 if (n < 4)
1465 block[0] = block[0] * s->y_dc_scale;
1466 else
1467 block[0] = block[0] * s->c_dc_scale;
de6d9b64
FB
1468 /* XXX: only mpeg1 */
1469 quant_matrix = s->intra_matrix;
badaf88e
MN
1470 for(i=1;i<nCoeffs;i++) {
1471 int j= zigzag_direct[i];
1472 level = block[j];
de6d9b64
FB
1473 if (level) {
1474 if (level < 0) {
1475 level = -level;
badaf88e 1476 level = (int)(level * qscale * quant_matrix[j]) >> 3;
de6d9b64
FB
1477 level = (level - 1) | 1;
1478 level = -level;
1479 } else {
badaf88e 1480 level = (int)(level * qscale * quant_matrix[j]) >> 3;
de6d9b64
FB
1481 level = (level - 1) | 1;
1482 }
1483#ifdef PARANOID
1484 if (level < -2048 || level > 2047)
1485 fprintf(stderr, "unquant error %d %d\n", i, level);
1486#endif
badaf88e 1487 block[j] = level;
de6d9b64
FB
1488 }
1489 }
1490 } else {
1491 i = 0;
de6d9b64 1492 quant_matrix = s->non_intra_matrix;
d2b3c3d7 1493 for(;i<nCoeffs;i++) {
badaf88e
MN
1494 int j= zigzag_direct[i];
1495 level = block[j];
de6d9b64
FB
1496 if (level) {
1497 if (level < 0) {
1498 level = -level;
1499 level = (((level << 1) + 1) * qscale *
badaf88e 1500 ((int) (quant_matrix[j]))) >> 4;
de6d9b64
FB
1501 level = (level - 1) | 1;
1502 level = -level;
1503 } else {
1504 level = (((level << 1) + 1) * qscale *
badaf88e 1505 ((int) (quant_matrix[j]))) >> 4;
de6d9b64
FB
1506 level = (level - 1) | 1;
1507 }
1508#ifdef PARANOID
1509 if (level < -2048 || level > 2047)
1510 fprintf(stderr, "unquant error %d %d\n", i, level);
1511#endif
badaf88e 1512 block[j] = level;
de6d9b64
FB
1513 }
1514 }
1515 }
1516}
21af69f7
FB
1517
1518static void dct_unquantize_h263_c(MpegEncContext *s,
1519 DCTELEM *block, int n, int qscale)
1520{
1521 int i, level, qmul, qadd;
badaf88e 1522 int nCoeffs;
9e15ad28 1523
21af69f7 1524 if (s->mb_intra) {
9e15ad28
J
1525 if (!s->h263_aic) {
1526 if (n < 4)
1527 block[0] = block[0] * s->y_dc_scale;
1528 else
1529 block[0] = block[0] * s->c_dc_scale;
1530 }
21af69f7 1531 i = 1;
badaf88e 1532 nCoeffs= 64; //does not allways use zigzag table
21af69f7
FB
1533 } else {
1534 i = 0;
badaf88e 1535 nCoeffs= zigzag_end[ s->block_last_index[n] ];
21af69f7
FB
1536 }
1537
1538 qmul = s->qscale << 1;
d140623f
J
1539 if (s->h263_aic && s->mb_intra)
1540 qadd = 0;
1541 else
1542 qadd = (s->qscale - 1) | 1;
21af69f7 1543
badaf88e 1544 for(;i<nCoeffs;i++) {
21af69f7
FB
1545 level = block[i];
1546 if (level) {
1547 if (level < 0) {
1548 level = level * qmul - qadd;
1549 } else {
1550 level = level * qmul + qadd;
1551 }
1552#ifdef PARANOID
1553 if (level < -2048 || level > 2047)
1554 fprintf(stderr, "unquant error %d %d\n", i, level);
1555#endif
1556 block[i] = level;
1557 }
1558 }
1559}
de6d9b64
FB
1560
1561/* rate control */
1562
1563/* an I frame is I_FRAME_SIZE_RATIO bigger than a P frame */
1564#define I_FRAME_SIZE_RATIO 3.0
1565#define QSCALE_K 20
1566
1567static void rate_control_init(MpegEncContext *s)
1568{
9cdd6a24
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1569#if 1
1570 emms_c();
1571
1572 //initial values, they dont really matter as they will be totally different within a few frames
1573 s->i_pred.coeff= s->p_pred.coeff= 7.0;
1574 s->i_pred.count= s->p_pred.count= 1.0;
1575
1576 s->i_pred.decay= s->p_pred.decay= 0.4;
1577
1578 // use more bits at the beginning, otherwise high motion at the begin will look like shit
1579 s->qsum=100;
1580 s->qcount=100;
1581
1582 s->short_term_qsum=0.001;
1583 s->short_term_qcount=0.001;
1584#else
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1585 s->wanted_bits = 0;
1586
1587 if (s->intra_only) {
1588 s->I_frame_bits = ((INT64)s->bit_rate * FRAME_RATE_BASE) / s->frame_rate;
1589 s->P_frame_bits = s->I_frame_bits;
1590 } else {
1591 s->P_frame_bits = (int) ((float)(s->gop_size * s->bit_rate) /
1592 (float)((float)s->frame_rate / FRAME_RATE_BASE * (I_FRAME_SIZE_RATIO + s->gop_size - 1)));
1593 s->I_frame_bits = (int)(s->P_frame_bits * I_FRAME_SIZE_RATIO);
1594 }
9cdd6a24 1595
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1596#if defined(DEBUG)
1597 printf("I_frame_size=%d P_frame_size=%d\n",
1598 s->I_frame_bits, s->P_frame_bits);
1599#endif
9cdd6a24 1600#endif
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1601}
1602
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1603static double predict(Predictor *p, double q, double var)
1604{
1605 return p->coeff*var / (q*p->count);
1606}
1607
1608static void update_predictor(Predictor *p, double q, double var, double size)
1609{
1610 double new_coeff= size*q / (var + 1);
1611 if(var<1000) return;
1612/*{
1613int pred= predict(p, q, var);
1614int error= abs(pred-size);
1615static double sum=0;
1616static int count=0;
1617if(count>5) sum+=error;
1618count++;
1619if(256*256*256*64%count==0){
1620 printf("%d %f %f\n", count, sum/count, p->coeff);
1621}
1622}*/
1623 p->count*= p->decay;
1624 p->coeff*= p->decay;
1625 p->count++;
1626 p->coeff+= new_coeff;
1627}
de6d9b64 1628
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1629static int rate_estimate_qscale(MpegEncContext *s)
1630{
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1631#if 1
1632 int qmin= s->qmin;
1633 int qmax= s->qmax;
1634 int rate_q=5;
de6d9b64 1635 float q;
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1636 int qscale;
1637 float br_compensation;
1638 double diff;
1639 double short_term_q;
1640 double long_term_q;
1641 int last_qscale= s->qscale;
1642 double fps;
1643 INT64 wanted_bits;
1644 emms_c();
1645
1646 fps= (double)s->frame_rate / FRAME_RATE_BASE;
1647 wanted_bits= s->bit_rate*(double)s->picture_number/fps;
1648
1649
1650 if(s->picture_number>2){
1651 /* update predictors */
1652 if(s->last_pict_type == I_TYPE){
1653 //FIXME
1654 }else{ //P Frame
1655//printf("%d %d %d %f\n", s->qscale, s->last_mc_mb_var, s->frame_bits, s->p_pred.coeff);
1656 update_predictor(&s->p_pred, s->qscale, s->last_mc_mb_var, s->frame_bits);
1657 }
1658 }
1659
1660 if(s->pict_type == I_TYPE){
1661 //FIXME
1662 rate_q= s->qsum/s->qcount;
1663 }else{ //P Frame
1664 int i;
1665 int diff, best_diff=1000000000;
1666 for(i=1; i<=31; i++){
1667 diff= predict(&s->p_pred, i, s->mc_mb_var) - (double)s->bit_rate/fps;
1668 if(diff<0) diff= -diff;
1669 if(diff<best_diff){
1670 best_diff= diff;
1671 rate_q= i;
1672 }
1673 }
1674 }
1675
1676 s->short_term_qsum*=s->qblur;
1677 s->short_term_qcount*=s->qblur;
1678
1679 s->short_term_qsum+= rate_q;
1680 s->short_term_qcount++;
1681 short_term_q= s->short_term_qsum/s->short_term_qcount;
1682
1683 long_term_q= s->qsum/s->qcount*s->total_bits/wanted_bits;
1684
1685// q= (long_term_q - short_term_q)*s->qcompress + short_term_q;
1686 q= 1/((1/long_term_q - 1/short_term_q)*s->qcompress + 1/short_term_q);
1687
1688 diff= s->total_bits - wanted_bits;
1689 br_compensation= (s->bit_rate_tolerance - diff)/s->bit_rate_tolerance;
c6741159 1690 if(br_compensation<=0.0) br_compensation=0.001;
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1691 q/=br_compensation;
1692
1693 qscale= (int)(q + 0.5);
1694 if (qscale<qmin) qscale=qmin;
1695 else if(qscale>qmax) qscale=qmax;
1696
1697 if (qscale<last_qscale-s->max_qdiff) qscale=last_qscale-s->max_qdiff;
1698 else if(qscale>last_qscale+s->max_qdiff) qscale=last_qscale+s->max_qdiff;
1699
1700 s->qsum+= qscale;
1701 s->qcount++;
de6d9b64 1702
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1703 s->last_pict_type= s->pict_type;
1704//printf("q:%d diff:%d comp:%f rate_q:%d st_q:%d fvar:%d last_size:%d\n", qscale, (int)diff, br_compensation,
1705// rate_q, (int)short_term_q, s->mc_mb_var, s->frame_bits);
1706//printf("%d %d\n", s->bit_rate, (int)fps);
1707 return qscale;
1708#else
1709 INT64 diff, total_bits = s->total_bits;
1710 float q;
1711 int qscale;
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1712 if (s->pict_type == I_TYPE) {
1713 s->wanted_bits += s->I_frame_bits;
1714 } else {
1715 s->wanted_bits += s->P_frame_bits;
1716 }
1717 diff = s->wanted_bits - total_bits;
1718 q = 31.0 - (float)diff / (QSCALE_K * s->mb_height * s->mb_width);
1719 /* adjust for I frame */
1720 if (s->pict_type == I_TYPE && !s->intra_only) {
1721 q /= I_FRAME_SIZE_RATIO;
1722 }
1723
1724 /* using a too small Q scale leeds to problems in mpeg1 and h263
1725 because AC coefficients are clamped to 255 or 127 */
1726 qmin = 3;
1727 if (q < qmin)
1728 q = qmin;
1729 else if (q > 31)
1730 q = 31;
1731 qscale = (int)(q + 0.5);
1732#if defined(DEBUG)
d140623f 1733 printf("\n%d: total=%0.0f wanted=%0.0f br=%0.1f diff=%d qest=%2.1f\n",
de6d9b64 1734 s->picture_number,
1a565432 1735 (double)total_bits,
d140623f 1736 (double)s->wanted_bits,
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1737 (float)s->frame_rate / FRAME_RATE_BASE *
1738 total_bits / s->picture_number,
d140623f 1739 (int)diff, q);
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1740#endif
1741 return qscale;
9cdd6a24 1742#endif
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1743}
1744
1745AVCodec mpeg1video_encoder = {
1746 "mpeg1video",
1747 CODEC_TYPE_VIDEO,
1748 CODEC_ID_MPEG1VIDEO,
1749 sizeof(MpegEncContext),
1750 MPV_encode_init,
1751 MPV_encode_picture,
1752 MPV_encode_end,
1753};
1754
1755AVCodec h263_encoder = {
1756 "h263",
1757 CODEC_TYPE_VIDEO,
1758 CODEC_ID_H263,
1759 sizeof(MpegEncContext),
1760 MPV_encode_init,
1761 MPV_encode_picture,
1762 MPV_encode_end,
1763};
1764
1765AVCodec h263p_encoder = {
1766 "h263p",
1767 CODEC_TYPE_VIDEO,
1768 CODEC_ID_H263P,
1769 sizeof(MpegEncContext),
1770 MPV_encode_init,
1771 MPV_encode_picture,
1772 MPV_encode_end,
1773};
1774
1775AVCodec rv10_encoder = {
1776 "rv10",
1777 CODEC_TYPE_VIDEO,
1778 CODEC_ID_RV10,
1779 sizeof(MpegEncContext),
1780 MPV_encode_init,
1781 MPV_encode_picture,
1782 MPV_encode_end,
1783};
1784
1785AVCodec mjpeg_encoder = {
1786 "mjpeg",
1787 CODEC_TYPE_VIDEO,
1788 CODEC_ID_MJPEG,
1789 sizeof(MpegEncContext),
1790 MPV_encode_init,
1791 MPV_encode_picture,
1792 MPV_encode_end,
1793};
1794
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1795AVCodec mpeg4_encoder = {
1796 "mpeg4",
de6d9b64 1797 CODEC_TYPE_VIDEO,
58f26ba9 1798 CODEC_ID_MPEG4,
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1799 sizeof(MpegEncContext),
1800 MPV_encode_init,
1801 MPV_encode_picture,
1802 MPV_encode_end,
1803};
1804
1805AVCodec msmpeg4_encoder = {
1806 "msmpeg4",
1807 CODEC_TYPE_VIDEO,
1808 CODEC_ID_MSMPEG4,
1809 sizeof(MpegEncContext),
1810 MPV_encode_init,
1811 MPV_encode_picture,
1812 MPV_encode_end,
1813};