2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
8 * This file is part of FFmpeg.
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 * The simplest mpeg encoder (well, it was the simplest!).
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/motion_vector.h"
35 #include "libavutil/timer.h"
38 #include "h264chroma.h"
43 #include "mpegutils.h"
44 #include "mpegvideo.h"
45 #include "mpegvideodata.h"
53 static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
54 int16_t *block, int n, int qscale)
56 int i, level, nCoeffs;
57 const uint16_t *quant_matrix;
59 nCoeffs= s->block_last_index[n];
61 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
62 /* XXX: only MPEG-1 */
63 quant_matrix = s->intra_matrix;
64 for(i=1;i<=nCoeffs;i++) {
65 int j= s->intra_scantable.permutated[i];
70 level = (int)(level * qscale * quant_matrix[j]) >> 3;
71 level = (level - 1) | 1;
74 level = (int)(level * qscale * quant_matrix[j]) >> 3;
75 level = (level - 1) | 1;
82 static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
83 int16_t *block, int n, int qscale)
85 int i, level, nCoeffs;
86 const uint16_t *quant_matrix;
88 nCoeffs= s->block_last_index[n];
90 quant_matrix = s->inter_matrix;
91 for(i=0; i<=nCoeffs; i++) {
92 int j= s->intra_scantable.permutated[i];
97 level = (((level << 1) + 1) * qscale *
98 ((int) (quant_matrix[j]))) >> 4;
99 level = (level - 1) | 1;
102 level = (((level << 1) + 1) * qscale *
103 ((int) (quant_matrix[j]))) >> 4;
104 level = (level - 1) | 1;
111 static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
112 int16_t *block, int n, int qscale)
114 int i, level, nCoeffs;
115 const uint16_t *quant_matrix;
117 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
120 if(s->alternate_scan) nCoeffs= 63;
121 else nCoeffs= s->block_last_index[n];
123 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
124 quant_matrix = s->intra_matrix;
125 for(i=1;i<=nCoeffs;i++) {
126 int j= s->intra_scantable.permutated[i];
131 level = (int)(level * qscale * quant_matrix[j]) >> 4;
134 level = (int)(level * qscale * quant_matrix[j]) >> 4;
141 static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
142 int16_t *block, int n, int qscale)
144 int i, level, nCoeffs;
145 const uint16_t *quant_matrix;
148 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
151 if(s->alternate_scan) nCoeffs= 63;
152 else nCoeffs= s->block_last_index[n];
154 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
156 quant_matrix = s->intra_matrix;
157 for(i=1;i<=nCoeffs;i++) {
158 int j= s->intra_scantable.permutated[i];
163 level = (int)(level * qscale * quant_matrix[j]) >> 4;
166 level = (int)(level * qscale * quant_matrix[j]) >> 4;
175 static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
176 int16_t *block, int n, int qscale)
178 int i, level, nCoeffs;
179 const uint16_t *quant_matrix;
182 if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
185 if(s->alternate_scan) nCoeffs= 63;
186 else nCoeffs= s->block_last_index[n];
188 quant_matrix = s->inter_matrix;
189 for(i=0; i<=nCoeffs; i++) {
190 int j= s->intra_scantable.permutated[i];
195 level = (((level << 1) + 1) * qscale *
196 ((int) (quant_matrix[j]))) >> 5;
199 level = (((level << 1) + 1) * qscale *
200 ((int) (quant_matrix[j]))) >> 5;
209 static void dct_unquantize_h263_intra_c(MpegEncContext *s,
210 int16_t *block, int n, int qscale)
212 int i, level, qmul, qadd;
215 av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
220 block[0] *= n < 4 ? s->y_dc_scale : s->c_dc_scale;
221 qadd = (qscale - 1) | 1;
228 nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
230 for(i=1; i<=nCoeffs; i++) {
234 level = level * qmul - qadd;
236 level = level * qmul + qadd;
243 static void dct_unquantize_h263_inter_c(MpegEncContext *s,
244 int16_t *block, int n, int qscale)
246 int i, level, qmul, qadd;
249 av_assert2(s->block_last_index[n]>=0);
251 qadd = (qscale - 1) | 1;
254 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
256 for(i=0; i<=nCoeffs; i++) {
260 level = level * qmul - qadd;
262 level = level * qmul + qadd;
270 static void gray16(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
273 memset(dst + h*linesize, 128, 16);
276 static void gray8(uint8_t *dst, const uint8_t *src, ptrdiff_t linesize, int h)
279 memset(dst + h*linesize, 128, 8);
282 /* init common dct for both encoder and decoder */
283 static av_cold int dct_init(MpegEncContext *s)
285 ff_blockdsp_init(&s->bdsp, s->avctx);
286 ff_h264chroma_init(&s->h264chroma, 8); //for lowres
287 ff_hpeldsp_init(&s->hdsp, s->avctx->flags);
288 ff_mpegvideodsp_init(&s->mdsp);
289 ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample);
291 if (s->avctx->debug & FF_DEBUG_NOMC) {
293 for (i=0; i<4; i++) {
294 s->hdsp.avg_pixels_tab[0][i] = gray16;
295 s->hdsp.put_pixels_tab[0][i] = gray16;
296 s->hdsp.put_no_rnd_pixels_tab[0][i] = gray16;
298 s->hdsp.avg_pixels_tab[1][i] = gray8;
299 s->hdsp.put_pixels_tab[1][i] = gray8;
300 s->hdsp.put_no_rnd_pixels_tab[1][i] = gray8;
304 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
305 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
306 s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
307 s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
308 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
309 if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
310 s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
311 s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
313 if (HAVE_INTRINSICS_NEON)
314 ff_mpv_common_init_neon(s);
317 ff_mpv_common_init_axp(s);
319 ff_mpv_common_init_arm(s);
321 ff_mpv_common_init_ppc(s);
323 ff_mpv_common_init_x86(s);
325 ff_mpv_common_init_mips(s);
330 av_cold void ff_mpv_idct_init(MpegEncContext *s)
332 ff_idctdsp_init(&s->idsp, s->avctx);
334 /* load & permutate scantables
335 * note: only wmv uses different ones
337 if (s->alternate_scan) {
338 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
339 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
341 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
342 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
344 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
345 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
348 static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
350 return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
351 s->chroma_x_shift, s->chroma_y_shift, s->out_format,
352 s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
353 &s->linesize, &s->uvlinesize);
356 static int init_duplicate_context(MpegEncContext *s)
358 int y_size = s->b8_stride * (2 * s->mb_height + 1);
359 int c_size = s->mb_stride * (s->mb_height + 1);
360 int yc_size = y_size + 2 * c_size;
363 if (s->mb_height & 1)
364 yc_size += 2*s->b8_stride + 2*s->mb_stride;
366 s->sc.edge_emu_buffer =
369 s->sc.rd_scratchpad =
371 s->sc.obmc_scratchpad = NULL;
374 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map,
375 ME_MAP_SIZE * sizeof(uint32_t), fail)
376 FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map,
377 ME_MAP_SIZE * sizeof(uint32_t), fail)
378 if (s->noise_reduction) {
379 FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum,
380 2 * 64 * sizeof(int), fail)
383 FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail)
384 s->block = s->blocks[0];
386 for (i = 0; i < 12; i++) {
387 s->pblocks[i] = &s->block[i];
389 if (s->avctx->codec_tag == AV_RL32("VCR2")) {
391 FFSWAP(void *, s->pblocks[4], s->pblocks[5]);
394 if (s->out_format == FMT_H263) {
396 FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base,
397 yc_size * sizeof(int16_t) * 16, fail);
398 s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
399 s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
400 s->ac_val[2] = s->ac_val[1] + c_size;
405 return -1; // free() through ff_mpv_common_end()
408 static void free_duplicate_context(MpegEncContext *s)
413 av_freep(&s->sc.edge_emu_buffer);
414 av_freep(&s->me.scratchpad);
416 s->sc.rd_scratchpad =
418 s->sc.obmc_scratchpad = NULL;
420 av_freep(&s->dct_error_sum);
421 av_freep(&s->me.map);
422 av_freep(&s->me.score_map);
423 av_freep(&s->blocks);
424 av_freep(&s->ac_val_base);
428 static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src)
430 #define COPY(a) bak->a = src->a
431 COPY(sc.edge_emu_buffer);
434 COPY(sc.rd_scratchpad);
435 COPY(sc.b_scratchpad);
436 COPY(sc.obmc_scratchpad);
443 COPY(me.map_generation);
455 int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src)
459 // FIXME copy only needed parts
461 backup_duplicate_context(&bak, dst);
462 memcpy(dst, src, sizeof(MpegEncContext));
463 backup_duplicate_context(dst, &bak);
464 for (i = 0; i < 12; i++) {
465 dst->pblocks[i] = &dst->block[i];
467 if (dst->avctx->codec_tag == AV_RL32("VCR2")) {
469 FFSWAP(void *, dst->pblocks[4], dst->pblocks[5]);
471 if (!dst->sc.edge_emu_buffer &&
472 (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me,
473 &dst->sc, dst->linesize)) < 0) {
474 av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context "
475 "scratch buffers.\n");
478 // STOP_TIMER("update_duplicate_context")
479 // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
483 int ff_mpeg_update_thread_context(AVCodecContext *dst,
484 const AVCodecContext *src)
487 MpegEncContext *s = dst->priv_data, *s1 = src->priv_data;
494 // FIXME can parameters change on I-frames?
495 // in that case dst may need a reinit
496 if (!s->context_initialized) {
498 memcpy(s, s1, sizeof(MpegEncContext));
501 s->bitstream_buffer = NULL;
502 s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
504 if (s1->context_initialized){
505 // s->picture_range_start += MAX_PICTURE_COUNT;
506 // s->picture_range_end += MAX_PICTURE_COUNT;
508 if((err = ff_mpv_common_init(s)) < 0){
509 memset(s, 0, sizeof(MpegEncContext));
516 if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
517 s->context_reinit = 0;
518 s->height = s1->height;
519 s->width = s1->width;
520 if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
524 s->avctx->coded_height = s1->avctx->coded_height;
525 s->avctx->coded_width = s1->avctx->coded_width;
526 s->avctx->width = s1->avctx->width;
527 s->avctx->height = s1->avctx->height;
529 s->coded_picture_number = s1->coded_picture_number;
530 s->picture_number = s1->picture_number;
532 av_assert0(!s->picture || s->picture != s1->picture);
534 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
535 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
536 if (s1->picture && s1->picture[i].f->buf[0] &&
537 (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
541 #define UPDATE_PICTURE(pic)\
543 ff_mpeg_unref_picture(s->avctx, &s->pic);\
544 if (s1->pic.f && s1->pic.f->buf[0])\
545 ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
547 ret = ff_update_picture_tables(&s->pic, &s1->pic);\
552 UPDATE_PICTURE(current_picture);
553 UPDATE_PICTURE(last_picture);
554 UPDATE_PICTURE(next_picture);
556 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
557 ((pic && pic >= old_ctx->picture && \
558 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
559 &new_ctx->picture[pic - old_ctx->picture] : NULL)
561 s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
562 s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
563 s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
565 // Error/bug resilience
566 s->next_p_frame_damaged = s1->next_p_frame_damaged;
567 s->workaround_bugs = s1->workaround_bugs;
568 s->padding_bug_score = s1->padding_bug_score;
570 // MPEG-4 timing info
571 memcpy(&s->last_time_base, &s1->last_time_base,
572 (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
573 (char *) &s1->last_time_base);
576 s->max_b_frames = s1->max_b_frames;
577 s->low_delay = s1->low_delay;
578 s->droppable = s1->droppable;
580 // DivX handling (doesn't work)
581 s->divx_packed = s1->divx_packed;
583 if (s1->bitstream_buffer) {
584 if (s1->bitstream_buffer_size +
585 AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
586 av_fast_malloc(&s->bitstream_buffer,
587 &s->allocated_bitstream_buffer_size,
588 s1->allocated_bitstream_buffer_size);
589 if (!s->bitstream_buffer) {
590 s->bitstream_buffer_size = 0;
591 return AVERROR(ENOMEM);
594 s->bitstream_buffer_size = s1->bitstream_buffer_size;
595 memcpy(s->bitstream_buffer, s1->bitstream_buffer,
596 s1->bitstream_buffer_size);
597 memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
598 AV_INPUT_BUFFER_PADDING_SIZE);
601 // linesize-dependent scratch buffer allocation
602 if (!s->sc.edge_emu_buffer)
604 if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
605 &s->sc, s1->linesize) < 0) {
606 av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
607 "scratch buffers.\n");
608 return AVERROR(ENOMEM);
611 av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
612 "be allocated due to unknown size.\n");
615 // MPEG-2/interlacing info
616 memcpy(&s->progressive_sequence, &s1->progressive_sequence,
617 (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
619 if (!s1->first_field) {
620 s->last_pict_type = s1->pict_type;
621 if (s1->current_picture_ptr)
622 s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality;
629 * Set the given MpegEncContext to common defaults
630 * (same for encoding and decoding).
631 * The changed fields will not depend upon the
632 * prior state of the MpegEncContext.
634 void ff_mpv_common_defaults(MpegEncContext *s)
636 s->y_dc_scale_table =
637 s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
638 s->chroma_qscale_table = ff_default_chroma_qscale_table;
639 s->progressive_frame = 1;
640 s->progressive_sequence = 1;
641 s->picture_structure = PICT_FRAME;
643 s->coded_picture_number = 0;
644 s->picture_number = 0;
649 s->slice_context_count = 1;
653 * Set the given MpegEncContext to defaults for decoding.
654 * the changed fields will not depend upon
655 * the prior state of the MpegEncContext.
657 void ff_mpv_decode_defaults(MpegEncContext *s)
659 ff_mpv_common_defaults(s);
662 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
665 s->width = avctx->coded_width;
666 s->height = avctx->coded_height;
667 s->codec_id = avctx->codec->id;
668 s->workaround_bugs = avctx->workaround_bugs;
670 /* convert fourcc to upper case */
671 s->codec_tag = avpriv_toupper4(avctx->codec_tag);
675 * Initialize and allocates MpegEncContext fields dependent on the resolution.
677 static int init_context_frame(MpegEncContext *s)
679 int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
681 s->mb_width = (s->width + 15) / 16;
682 s->mb_stride = s->mb_width + 1;
683 s->b8_stride = s->mb_width * 2 + 1;
684 mb_array_size = s->mb_height * s->mb_stride;
685 mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
687 /* set default edge pos, will be overridden
688 * in decode_header if needed */
689 s->h_edge_pos = s->mb_width * 16;
690 s->v_edge_pos = s->mb_height * 16;
692 s->mb_num = s->mb_width * s->mb_height;
697 s->block_wrap[3] = s->b8_stride;
699 s->block_wrap[5] = s->mb_stride;
701 y_size = s->b8_stride * (2 * s->mb_height + 1);
702 c_size = s->mb_stride * (s->mb_height + 1);
703 yc_size = y_size + 2 * c_size;
705 if (s->mb_height & 1)
706 yc_size += 2*s->b8_stride + 2*s->mb_stride;
708 FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int),
709 fail); // error resilience code looks cleaner with this
710 for (y = 0; y < s->mb_height; y++)
711 for (x = 0; x < s->mb_width; x++)
712 s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride;
714 s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed?
717 /* Allocate MV tables */
718 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
719 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
720 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
721 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
722 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
723 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail)
724 s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
725 s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1;
726 s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1;
727 s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base + s->mb_stride + 1;
728 s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base + s->mb_stride + 1;
729 s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1;
731 /* Allocate MB type table */
732 FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail) // needed for encoding
734 FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail)
736 FF_ALLOC_OR_GOTO(s->avctx, s->cplx_tab,
737 mb_array_size * sizeof(float), fail);
738 FF_ALLOC_OR_GOTO(s->avctx, s->bits_tab,
739 mb_array_size * sizeof(float), fail);
743 if (s->codec_id == AV_CODEC_ID_MPEG4 ||
744 (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) {
745 /* interlaced direct mode decoding tables */
746 for (i = 0; i < 2; i++) {
748 for (j = 0; j < 2; j++) {
749 for (k = 0; k < 2; k++) {
750 FF_ALLOCZ_OR_GOTO(s->avctx,
751 s->b_field_mv_table_base[i][j][k],
752 mv_table_size * 2 * sizeof(int16_t),
754 s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] +
757 FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail)
758 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail)
759 s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
761 FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail)
764 if (s->out_format == FMT_H263) {
766 FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size + (s->mb_height&1)*2*s->b8_stride, fail);
767 s->coded_block = s->coded_block_base + s->b8_stride + 1;
769 /* cbp, ac_pred, pred_dir */
770 FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail);
771 FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail);
774 if (s->h263_pred || s->h263_plus || !s->encoding) {
776 // MN: we need these for error resilience of intra-frames
777 FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail);
778 s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
779 s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
780 s->dc_val[2] = s->dc_val[1] + c_size;
781 for (i = 0; i < yc_size; i++)
782 s->dc_val_base[i] = 1024;
785 /* which mb is an intra block */
786 FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail);
787 memset(s->mbintra_table, 1, mb_array_size);
789 /* init macroblock skip table */
790 FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail);
791 // Note the + 1 is for a quicker MPEG-4 slice_end detection
793 return ff_mpeg_er_init(s);
795 return AVERROR(ENOMEM);
798 static void clear_context(MpegEncContext *s)
802 memset(&s->next_picture, 0, sizeof(s->next_picture));
803 memset(&s->last_picture, 0, sizeof(s->last_picture));
804 memset(&s->current_picture, 0, sizeof(s->current_picture));
805 memset(&s->new_picture, 0, sizeof(s->new_picture));
807 memset(s->thread_context, 0, sizeof(s->thread_context));
810 s->me.score_map = NULL;
811 s->dct_error_sum = NULL;
814 memset(s->pblocks, 0, sizeof(s->pblocks));
815 s->ac_val_base = NULL;
819 s->sc.edge_emu_buffer = NULL;
820 s->me.scratchpad = NULL;
822 s->sc.rd_scratchpad =
824 s->sc.obmc_scratchpad = NULL;
827 s->bitstream_buffer = NULL;
828 s->allocated_bitstream_buffer_size = 0;
831 s->p_mv_table_base = NULL;
832 s->b_forw_mv_table_base = NULL;
833 s->b_back_mv_table_base = NULL;
834 s->b_bidir_forw_mv_table_base = NULL;
835 s->b_bidir_back_mv_table_base = NULL;
836 s->b_direct_mv_table_base = NULL;
837 s->p_mv_table = NULL;
838 s->b_forw_mv_table = NULL;
839 s->b_back_mv_table = NULL;
840 s->b_bidir_forw_mv_table = NULL;
841 s->b_bidir_back_mv_table = NULL;
842 s->b_direct_mv_table = NULL;
843 for (i = 0; i < 2; i++) {
844 for (j = 0; j < 2; j++) {
845 for (k = 0; k < 2; k++) {
846 s->b_field_mv_table_base[i][j][k] = NULL;
847 s->b_field_mv_table[i][j][k] = NULL;
849 s->b_field_select_table[i][j] = NULL;
850 s->p_field_mv_table_base[i][j] = NULL;
851 s->p_field_mv_table[i][j] = NULL;
853 s->p_field_select_table[i] = NULL;
856 s->dc_val_base = NULL;
857 s->coded_block_base = NULL;
858 s->mbintra_table = NULL;
860 s->pred_dir_table = NULL;
862 s->mbskip_table = NULL;
864 s->er.error_status_table = NULL;
865 s->er.er_temp_buffer = NULL;
866 s->mb_index2xy = NULL;
867 s->lambda_table = NULL;
874 * init common structure for both encoder and decoder.
875 * this assumes that some variables like width/height are already set
877 av_cold int ff_mpv_common_init(MpegEncContext *s)
880 int nb_slices = (HAVE_THREADS &&
881 s->avctx->active_thread_type & FF_THREAD_SLICE) ?
882 s->avctx->thread_count : 1;
886 if (s->encoding && s->avctx->slices)
887 nb_slices = s->avctx->slices;
889 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
890 s->mb_height = (s->height + 31) / 32 * 2;
892 s->mb_height = (s->height + 15) / 16;
894 if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) {
895 av_log(s->avctx, AV_LOG_ERROR,
896 "decoding to AV_PIX_FMT_NONE is not supported.\n");
900 if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) {
903 max_slices = FFMIN(MAX_THREADS, s->mb_height);
905 max_slices = MAX_THREADS;
906 av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
907 " reducing to %d\n", nb_slices, max_slices);
908 nb_slices = max_slices;
911 if ((s->width || s->height) &&
912 av_image_check_size(s->width, s->height, 0, s->avctx))
917 /* set chroma shifts */
918 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
924 FF_ALLOCZ_OR_GOTO(s->avctx, s->picture,
925 MAX_PICTURE_COUNT * sizeof(Picture), fail);
926 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
927 s->picture[i].f = av_frame_alloc();
928 if (!s->picture[i].f)
931 s->next_picture.f = av_frame_alloc();
932 if (!s->next_picture.f)
934 s->last_picture.f = av_frame_alloc();
935 if (!s->last_picture.f)
937 s->current_picture.f = av_frame_alloc();
938 if (!s->current_picture.f)
940 s->new_picture.f = av_frame_alloc();
941 if (!s->new_picture.f)
944 if (init_context_frame(s))
947 s->parse_context.state = -1;
949 s->context_initialized = 1;
950 memset(s->thread_context, 0, sizeof(s->thread_context));
951 s->thread_context[0] = s;
953 // if (s->width && s->height) {
955 for (i = 0; i < nb_slices; i++) {
957 s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
958 if (!s->thread_context[i])
961 if (init_duplicate_context(s->thread_context[i]) < 0)
963 s->thread_context[i]->start_mb_y =
964 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
965 s->thread_context[i]->end_mb_y =
966 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
969 if (init_duplicate_context(s) < 0)
972 s->end_mb_y = s->mb_height;
974 s->slice_context_count = nb_slices;
979 ff_mpv_common_end(s);
984 * Frees and resets MpegEncContext fields depending on the resolution.
985 * Is used during resolution changes to avoid a full reinitialization of the
988 static void free_context_frame(MpegEncContext *s)
992 av_freep(&s->mb_type);
993 av_freep(&s->p_mv_table_base);
994 av_freep(&s->b_forw_mv_table_base);
995 av_freep(&s->b_back_mv_table_base);
996 av_freep(&s->b_bidir_forw_mv_table_base);
997 av_freep(&s->b_bidir_back_mv_table_base);
998 av_freep(&s->b_direct_mv_table_base);
999 s->p_mv_table = NULL;
1000 s->b_forw_mv_table = NULL;
1001 s->b_back_mv_table = NULL;
1002 s->b_bidir_forw_mv_table = NULL;
1003 s->b_bidir_back_mv_table = NULL;
1004 s->b_direct_mv_table = NULL;
1005 for (i = 0; i < 2; i++) {
1006 for (j = 0; j < 2; j++) {
1007 for (k = 0; k < 2; k++) {
1008 av_freep(&s->b_field_mv_table_base[i][j][k]);
1009 s->b_field_mv_table[i][j][k] = NULL;
1011 av_freep(&s->b_field_select_table[i][j]);
1012 av_freep(&s->p_field_mv_table_base[i][j]);
1013 s->p_field_mv_table[i][j] = NULL;
1015 av_freep(&s->p_field_select_table[i]);
1018 av_freep(&s->dc_val_base);
1019 av_freep(&s->coded_block_base);
1020 av_freep(&s->mbintra_table);
1021 av_freep(&s->cbp_table);
1022 av_freep(&s->pred_dir_table);
1024 av_freep(&s->mbskip_table);
1026 av_freep(&s->er.error_status_table);
1027 av_freep(&s->er.er_temp_buffer);
1028 av_freep(&s->mb_index2xy);
1029 av_freep(&s->lambda_table);
1031 av_freep(&s->cplx_tab);
1032 av_freep(&s->bits_tab);
1034 s->linesize = s->uvlinesize = 0;
1037 int ff_mpv_common_frame_size_change(MpegEncContext *s)
1041 if (!s->context_initialized)
1042 return AVERROR(EINVAL);
1044 if (s->slice_context_count > 1) {
1045 for (i = 0; i < s->slice_context_count; i++) {
1046 free_duplicate_context(s->thread_context[i]);
1048 for (i = 1; i < s->slice_context_count; i++) {
1049 av_freep(&s->thread_context[i]);
1052 free_duplicate_context(s);
1054 free_context_frame(s);
1057 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1058 s->picture[i].needs_realloc = 1;
1061 s->last_picture_ptr =
1062 s->next_picture_ptr =
1063 s->current_picture_ptr = NULL;
1066 if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
1067 s->mb_height = (s->height + 31) / 32 * 2;
1069 s->mb_height = (s->height + 15) / 16;
1071 if ((s->width || s->height) &&
1072 (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
1075 if ((err = init_context_frame(s)))
1078 memset(s->thread_context, 0, sizeof(s->thread_context));
1079 s->thread_context[0] = s;
1081 if (s->width && s->height) {
1082 int nb_slices = s->slice_context_count;
1083 if (nb_slices > 1) {
1084 for (i = 0; i < nb_slices; i++) {
1086 s->thread_context[i] = av_memdup(s, sizeof(MpegEncContext));
1087 if (!s->thread_context[i]) {
1088 err = AVERROR(ENOMEM);
1092 if ((err = init_duplicate_context(s->thread_context[i])) < 0)
1094 s->thread_context[i]->start_mb_y =
1095 (s->mb_height * (i) + nb_slices / 2) / nb_slices;
1096 s->thread_context[i]->end_mb_y =
1097 (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices;
1100 err = init_duplicate_context(s);
1104 s->end_mb_y = s->mb_height;
1106 s->slice_context_count = nb_slices;
1111 ff_mpv_common_end(s);
1115 /* init common structure for both encoder and decoder */
1116 void ff_mpv_common_end(MpegEncContext *s)
1123 if (s->slice_context_count > 1) {
1124 for (i = 0; i < s->slice_context_count; i++) {
1125 free_duplicate_context(s->thread_context[i]);
1127 for (i = 1; i < s->slice_context_count; i++) {
1128 av_freep(&s->thread_context[i]);
1130 s->slice_context_count = 1;
1131 } else free_duplicate_context(s);
1133 av_freep(&s->parse_context.buffer);
1134 s->parse_context.buffer_size = 0;
1136 av_freep(&s->bitstream_buffer);
1137 s->allocated_bitstream_buffer_size = 0;
1140 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1141 ff_free_picture_tables(&s->picture[i]);
1142 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1143 av_frame_free(&s->picture[i].f);
1146 av_freep(&s->picture);
1147 ff_free_picture_tables(&s->last_picture);
1148 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1149 av_frame_free(&s->last_picture.f);
1150 ff_free_picture_tables(&s->current_picture);
1151 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1152 av_frame_free(&s->current_picture.f);
1153 ff_free_picture_tables(&s->next_picture);
1154 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1155 av_frame_free(&s->next_picture.f);
1156 ff_free_picture_tables(&s->new_picture);
1157 ff_mpeg_unref_picture(s->avctx, &s->new_picture);
1158 av_frame_free(&s->new_picture.f);
1160 free_context_frame(s);
1162 s->context_initialized = 0;
1163 s->last_picture_ptr =
1164 s->next_picture_ptr =
1165 s->current_picture_ptr = NULL;
1166 s->linesize = s->uvlinesize = 0;
1170 static void gray_frame(AVFrame *frame)
1172 int i, h_chroma_shift, v_chroma_shift;
1174 av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
1176 for(i=0; i<frame->height; i++)
1177 memset(frame->data[0] + frame->linesize[0]*i, 0x80, frame->width);
1178 for(i=0; i<AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
1179 memset(frame->data[1] + frame->linesize[1]*i,
1180 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1181 memset(frame->data[2] + frame->linesize[2]*i,
1182 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
1187 * generic function called after decoding
1188 * the header and before a frame is decoded.
1190 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
1196 if (!ff_thread_can_start_frame(avctx)) {
1197 av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1201 /* mark & release old frames */
1202 if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
1203 s->last_picture_ptr != s->next_picture_ptr &&
1204 s->last_picture_ptr->f->buf[0]) {
1205 ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
1208 /* release forgotten pictures */
1209 /* if (MPEG-124 / H.263) */
1210 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1211 if (&s->picture[i] != s->last_picture_ptr &&
1212 &s->picture[i] != s->next_picture_ptr &&
1213 s->picture[i].reference && !s->picture[i].needs_realloc) {
1214 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1218 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
1219 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
1220 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
1222 /* release non reference frames */
1223 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
1224 if (!s->picture[i].reference)
1225 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
1228 if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
1229 // we already have an unused image
1230 // (maybe it was set before reading the header)
1231 pic = s->current_picture_ptr;
1233 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1235 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1238 pic = &s->picture[i];
1242 if (!s->droppable) {
1243 if (s->pict_type != AV_PICTURE_TYPE_B)
1247 pic->f->coded_picture_number = s->coded_picture_number++;
1249 if (alloc_picture(s, pic, 0) < 0)
1252 s->current_picture_ptr = pic;
1253 // FIXME use only the vars from current_pic
1254 s->current_picture_ptr->f->top_field_first = s->top_field_first;
1255 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
1256 s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1257 if (s->picture_structure != PICT_FRAME)
1258 s->current_picture_ptr->f->top_field_first =
1259 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
1261 s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
1262 !s->progressive_sequence;
1263 s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
1265 s->current_picture_ptr->f->pict_type = s->pict_type;
1266 // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
1267 // s->current_picture_ptr->quality = s->new_picture_ptr->quality;
1268 s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1270 if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
1271 s->current_picture_ptr)) < 0)
1274 if (s->pict_type != AV_PICTURE_TYPE_B) {
1275 s->last_picture_ptr = s->next_picture_ptr;
1277 s->next_picture_ptr = s->current_picture_ptr;
1279 ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
1280 s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
1281 s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
1282 s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
1283 s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
1284 s->pict_type, s->droppable);
1286 if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
1287 (s->pict_type != AV_PICTURE_TYPE_I)) {
1288 int h_chroma_shift, v_chroma_shift;
1289 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
1290 &h_chroma_shift, &v_chroma_shift);
1291 if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
1292 av_log(avctx, AV_LOG_DEBUG,
1293 "allocating dummy last picture for B frame\n");
1294 else if (s->pict_type != AV_PICTURE_TYPE_I)
1295 av_log(avctx, AV_LOG_ERROR,
1296 "warning: first frame is no keyframe\n");
1298 /* Allocate a dummy frame */
1299 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1301 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1304 s->last_picture_ptr = &s->picture[i];
1306 s->last_picture_ptr->reference = 3;
1307 s->last_picture_ptr->f->key_frame = 0;
1308 s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
1310 if (alloc_picture(s, s->last_picture_ptr, 0) < 0) {
1311 s->last_picture_ptr = NULL;
1315 if (!avctx->hwaccel) {
1316 for(i=0; i<avctx->height; i++)
1317 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
1318 0x80, avctx->width);
1319 if (s->last_picture_ptr->f->data[2]) {
1320 for(i=0; i<AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
1321 memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
1322 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1323 memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
1324 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
1328 if(s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263){
1329 for(i=0; i<avctx->height; i++)
1330 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i, 16, avctx->width);
1334 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
1335 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
1337 if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
1338 s->pict_type == AV_PICTURE_TYPE_B) {
1339 /* Allocate a dummy frame */
1340 i = ff_find_unused_picture(s->avctx, s->picture, 0);
1342 av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1345 s->next_picture_ptr = &s->picture[i];
1347 s->next_picture_ptr->reference = 3;
1348 s->next_picture_ptr->f->key_frame = 0;
1349 s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
1351 if (alloc_picture(s, s->next_picture_ptr, 0) < 0) {
1352 s->next_picture_ptr = NULL;
1355 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
1356 ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
1359 #if 0 // BUFREF-FIXME
1360 memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
1361 memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
1363 if (s->last_picture_ptr) {
1364 if (s->last_picture_ptr->f->buf[0] &&
1365 (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
1366 s->last_picture_ptr)) < 0)
1369 if (s->next_picture_ptr) {
1370 if (s->next_picture_ptr->f->buf[0] &&
1371 (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
1372 s->next_picture_ptr)) < 0)
1376 av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
1377 s->last_picture_ptr->f->buf[0]));
1379 if (s->picture_structure!= PICT_FRAME) {
1381 for (i = 0; i < 4; i++) {
1382 if (s->picture_structure == PICT_BOTTOM_FIELD) {
1383 s->current_picture.f->data[i] +=
1384 s->current_picture.f->linesize[i];
1386 s->current_picture.f->linesize[i] *= 2;
1387 s->last_picture.f->linesize[i] *= 2;
1388 s->next_picture.f->linesize[i] *= 2;
1392 /* set dequantizer, we can't do it during init as
1393 * it might change for MPEG-4 and we can't do it in the header
1394 * decode as init is not called for MPEG-4 there yet */
1395 if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1396 s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
1397 s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
1398 } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
1399 s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
1400 s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
1402 s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
1403 s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
1406 if (s->avctx->debug & FF_DEBUG_NOMC) {
1407 gray_frame(s->current_picture_ptr->f);
1413 /* called after a frame has been decoded. */
1414 void ff_mpv_frame_end(MpegEncContext *s)
1418 if (s->current_picture.reference)
1419 ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1422 static int add_mb(AVMotionVector *mb, uint32_t mb_type,
1423 int dst_x, int dst_y,
1424 int motion_x, int motion_y, int motion_scale,
1427 mb->w = IS_8X8(mb_type) || IS_8X16(mb_type) ? 8 : 16;
1428 mb->h = IS_8X8(mb_type) || IS_16X8(mb_type) ? 8 : 16;
1429 mb->motion_x = motion_x;
1430 mb->motion_y = motion_y;
1431 mb->motion_scale = motion_scale;
1434 mb->src_x = dst_x + motion_x / motion_scale;
1435 mb->src_y = dst_y + motion_y / motion_scale;
1436 mb->source = direction ? 1 : -1;
1437 mb->flags = 0; // XXX: does mb_type contain extra information that could be exported here?
1442 * Print debugging info for the given picture.
1444 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table,
1445 uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2],
1447 int mb_width, int mb_height, int mb_stride, int quarter_sample)
1449 if ((avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) && mbtype_table && motion_val[0]) {
1450 const int shift = 1 + quarter_sample;
1451 const int scale = 1 << shift;
1452 const int mv_sample_log2 = avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_SVQ3 ? 2 : 1;
1453 const int mv_stride = (mb_width << mv_sample_log2) +
1454 (avctx->codec->id == AV_CODEC_ID_H264 ? 0 : 1);
1455 int mb_x, mb_y, mbcount = 0;
1457 /* size is width * height * 2 * 4 where 2 is for directions and 4 is
1458 * for the maximum number of MB (4 MB in case of IS_8x8) */
1459 AVMotionVector *mvs = av_malloc_array(mb_width * mb_height, 2 * 4 * sizeof(AVMotionVector));
1463 for (mb_y = 0; mb_y < mb_height; mb_y++) {
1464 for (mb_x = 0; mb_x < mb_width; mb_x++) {
1465 int i, direction, mb_type = mbtype_table[mb_x + mb_y * mb_stride];
1466 for (direction = 0; direction < 2; direction++) {
1467 if (!USES_LIST(mb_type, direction))
1469 if (IS_8X8(mb_type)) {
1470 for (i = 0; i < 4; i++) {
1471 int sx = mb_x * 16 + 4 + 8 * (i & 1);
1472 int sy = mb_y * 16 + 4 + 8 * (i >> 1);
1473 int xy = (mb_x * 2 + (i & 1) +
1474 (mb_y * 2 + (i >> 1)) * mv_stride) << (mv_sample_log2 - 1);
1475 int mx = motion_val[direction][xy][0];
1476 int my = motion_val[direction][xy][1];
1477 mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
1479 } else if (IS_16X8(mb_type)) {
1480 for (i = 0; i < 2; i++) {
1481 int sx = mb_x * 16 + 8;
1482 int sy = mb_y * 16 + 4 + 8 * i;
1483 int xy = (mb_x * 2 + (mb_y * 2 + i) * mv_stride) << (mv_sample_log2 - 1);
1484 int mx = motion_val[direction][xy][0];
1485 int my = motion_val[direction][xy][1];
1487 if (IS_INTERLACED(mb_type))
1490 mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
1492 } else if (IS_8X16(mb_type)) {
1493 for (i = 0; i < 2; i++) {
1494 int sx = mb_x * 16 + 4 + 8 * i;
1495 int sy = mb_y * 16 + 8;
1496 int xy = (mb_x * 2 + i + mb_y * 2 * mv_stride) << (mv_sample_log2 - 1);
1497 int mx = motion_val[direction][xy][0];
1498 int my = motion_val[direction][xy][1];
1500 if (IS_INTERLACED(mb_type))
1503 mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
1506 int sx = mb_x * 16 + 8;
1507 int sy = mb_y * 16 + 8;
1508 int xy = (mb_x + mb_y * mv_stride) << mv_sample_log2;
1509 int mx = motion_val[direction][xy][0];
1510 int my = motion_val[direction][xy][1];
1511 mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
1518 AVFrameSideData *sd;
1520 av_log(avctx, AV_LOG_DEBUG, "Adding %d MVs info to frame %d\n", mbcount, avctx->frame_number);
1521 sd = av_frame_new_side_data(pict, AV_FRAME_DATA_MOTION_VECTORS, mbcount * sizeof(AVMotionVector));
1526 memcpy(sd->data, mvs, mbcount * sizeof(AVMotionVector));
1532 /* TODO: export all the following to make them accessible for users (and filters) */
1533 if (avctx->hwaccel || !mbtype_table)
1537 if (avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) {
1540 av_log(avctx, AV_LOG_DEBUG, "New frame, type: %c\n",
1541 av_get_picture_type_char(pict->pict_type));
1542 for (y = 0; y < mb_height; y++) {
1543 for (x = 0; x < mb_width; x++) {
1544 if (avctx->debug & FF_DEBUG_SKIP) {
1545 int count = mbskip_table ? mbskip_table[x + y * mb_stride] : 0;
1548 av_log(avctx, AV_LOG_DEBUG, "%1d", count);
1550 if (avctx->debug & FF_DEBUG_QP) {
1551 av_log(avctx, AV_LOG_DEBUG, "%2d",
1552 qscale_table[x + y * mb_stride]);
1554 if (avctx->debug & FF_DEBUG_MB_TYPE) {
1555 int mb_type = mbtype_table[x + y * mb_stride];
1556 // Type & MV direction
1557 if (IS_PCM(mb_type))
1558 av_log(avctx, AV_LOG_DEBUG, "P");
1559 else if (IS_INTRA(mb_type) && IS_ACPRED(mb_type))
1560 av_log(avctx, AV_LOG_DEBUG, "A");
1561 else if (IS_INTRA4x4(mb_type))
1562 av_log(avctx, AV_LOG_DEBUG, "i");
1563 else if (IS_INTRA16x16(mb_type))
1564 av_log(avctx, AV_LOG_DEBUG, "I");
1565 else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type))
1566 av_log(avctx, AV_LOG_DEBUG, "d");
1567 else if (IS_DIRECT(mb_type))
1568 av_log(avctx, AV_LOG_DEBUG, "D");
1569 else if (IS_GMC(mb_type) && IS_SKIP(mb_type))
1570 av_log(avctx, AV_LOG_DEBUG, "g");
1571 else if (IS_GMC(mb_type))
1572 av_log(avctx, AV_LOG_DEBUG, "G");
1573 else if (IS_SKIP(mb_type))
1574 av_log(avctx, AV_LOG_DEBUG, "S");
1575 else if (!USES_LIST(mb_type, 1))
1576 av_log(avctx, AV_LOG_DEBUG, ">");
1577 else if (!USES_LIST(mb_type, 0))
1578 av_log(avctx, AV_LOG_DEBUG, "<");
1580 av_assert2(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
1581 av_log(avctx, AV_LOG_DEBUG, "X");
1585 if (IS_8X8(mb_type))
1586 av_log(avctx, AV_LOG_DEBUG, "+");
1587 else if (IS_16X8(mb_type))
1588 av_log(avctx, AV_LOG_DEBUG, "-");
1589 else if (IS_8X16(mb_type))
1590 av_log(avctx, AV_LOG_DEBUG, "|");
1591 else if (IS_INTRA(mb_type) || IS_16X16(mb_type))
1592 av_log(avctx, AV_LOG_DEBUG, " ");
1594 av_log(avctx, AV_LOG_DEBUG, "?");
1597 if (IS_INTERLACED(mb_type))
1598 av_log(avctx, AV_LOG_DEBUG, "=");
1600 av_log(avctx, AV_LOG_DEBUG, " ");
1603 av_log(avctx, AV_LOG_DEBUG, "\n");
1608 if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) ||
1609 (avctx->debug_mv)) {
1612 int h_chroma_shift, v_chroma_shift, block_height;
1613 const int mv_sample_log2 = avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_SVQ3 ? 2 : 1;
1614 const int mv_stride = (mb_width << mv_sample_log2) +
1615 (avctx->codec->id == AV_CODEC_ID_H264 ? 0 : 1);
1618 *low_delay = 0; // needed to see the vectors without trashing the buffers
1620 ret = av_pix_fmt_get_chroma_sub_sample (avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
1624 av_frame_make_writable(pict);
1626 pict->opaque = NULL;
1627 block_height = 16 >> v_chroma_shift;
1629 for (mb_y = 0; mb_y < mb_height; mb_y++) {
1631 for (mb_x = 0; mb_x < mb_width; mb_x++) {
1632 const int mb_index = mb_x + mb_y * mb_stride;
1633 if ((avctx->debug & FF_DEBUG_VIS_QP)) {
1634 uint64_t c = (qscale_table[mb_index] * 128 / 31) *
1635 0x0101010101010101ULL;
1637 for (y = 0; y < block_height; y++) {
1638 *(uint64_t *)(pict->data[1] + 8 * mb_x +
1639 (block_height * mb_y + y) *
1640 pict->linesize[1]) = c;
1641 *(uint64_t *)(pict->data[2] + 8 * mb_x +
1642 (block_height * mb_y + y) *
1643 pict->linesize[2]) = c;
1646 if ((avctx->debug & FF_DEBUG_VIS_MB_TYPE) &&
1648 int mb_type = mbtype_table[mb_index];
1651 #define COLOR(theta, r) \
1652 u = (int)(128 + r * cos(theta * M_PI / 180)); \
1653 v = (int)(128 + r * sin(theta * M_PI / 180));
1657 if (IS_PCM(mb_type)) {
1659 } else if ((IS_INTRA(mb_type) && IS_ACPRED(mb_type)) ||
1660 IS_INTRA16x16(mb_type)) {
1662 } else if (IS_INTRA4x4(mb_type)) {
1664 } else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type)) {
1666 } else if (IS_DIRECT(mb_type)) {
1668 } else if (IS_GMC(mb_type) && IS_SKIP(mb_type)) {
1670 } else if (IS_GMC(mb_type)) {
1672 } else if (IS_SKIP(mb_type)) {
1674 } else if (!USES_LIST(mb_type, 1)) {
1676 } else if (!USES_LIST(mb_type, 0)) {
1679 av_assert2(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
1683 u *= 0x0101010101010101ULL;
1684 v *= 0x0101010101010101ULL;
1685 for (y = 0; y < block_height; y++) {
1686 *(uint64_t *)(pict->data[1] + 8 * mb_x +
1687 (block_height * mb_y + y) * pict->linesize[1]) = u;
1688 *(uint64_t *)(pict->data[2] + 8 * mb_x +
1689 (block_height * mb_y + y) * pict->linesize[2]) = v;
1693 if (IS_8X8(mb_type) || IS_16X8(mb_type)) {
1694 *(uint64_t *)(pict->data[0] + 16 * mb_x + 0 +
1695 (16 * mb_y + 8) * pict->linesize[0]) ^= 0x8080808080808080ULL;
1696 *(uint64_t *)(pict->data[0] + 16 * mb_x + 8 +
1697 (16 * mb_y + 8) * pict->linesize[0]) ^= 0x8080808080808080ULL;
1699 if (IS_8X8(mb_type) || IS_8X16(mb_type)) {
1700 for (y = 0; y < 16; y++)
1701 pict->data[0][16 * mb_x + 8 + (16 * mb_y + y) *
1702 pict->linesize[0]] ^= 0x80;
1704 if (IS_8X8(mb_type) && mv_sample_log2 >= 2) {
1705 int dm = 1 << (mv_sample_log2 - 2);
1706 for (i = 0; i < 4; i++) {
1707 int sx = mb_x * 16 + 8 * (i & 1);
1708 int sy = mb_y * 16 + 8 * (i >> 1);
1709 int xy = (mb_x * 2 + (i & 1) +
1710 (mb_y * 2 + (i >> 1)) * mv_stride) << (mv_sample_log2 - 1);
1712 int32_t *mv = (int32_t *) &motion_val[0][xy];
1713 if (mv[0] != mv[dm] ||
1714 mv[dm * mv_stride] != mv[dm * (mv_stride + 1)])
1715 for (y = 0; y < 8; y++)
1716 pict->data[0][sx + 4 + (sy + y) * pict->linesize[0]] ^= 0x80;
1717 if (mv[0] != mv[dm * mv_stride] || mv[dm] != mv[dm * (mv_stride + 1)])
1718 *(uint64_t *)(pict->data[0] + sx + (sy + 4) *
1719 pict->linesize[0]) ^= 0x8080808080808080ULL;
1723 if (IS_INTERLACED(mb_type) &&
1724 avctx->codec->id == AV_CODEC_ID_H264) {
1729 mbskip_table[mb_index] = 0;
1736 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
1738 ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
1739 p->qscale_table, p->motion_val, &s->low_delay,
1740 s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
1743 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
1745 AVBufferRef *ref = av_buffer_ref(p->qscale_table_buf);
1746 int offset = 2*s->mb_stride + 1;
1748 return AVERROR(ENOMEM);
1749 av_assert0(ref->size >= offset + s->mb_stride * ((f->height+15)/16));
1750 ref->size -= offset;
1751 ref->data += offset;
1752 return av_frame_set_qp_table(f, ref, s->mb_stride, qp_type);
1755 static inline int hpel_motion_lowres(MpegEncContext *s,
1756 uint8_t *dest, uint8_t *src,
1757 int field_based, int field_select,
1758 int src_x, int src_y,
1759 int width, int height, ptrdiff_t stride,
1760 int h_edge_pos, int v_edge_pos,
1761 int w, int h, h264_chroma_mc_func *pix_op,
1762 int motion_x, int motion_y)
1764 const int lowres = s->avctx->lowres;
1765 const int op_index = FFMIN(lowres, 3);
1766 const int s_mask = (2 << lowres) - 1;
1770 if (s->quarter_sample) {
1775 sx = motion_x & s_mask;
1776 sy = motion_y & s_mask;
1777 src_x += motion_x >> lowres + 1;
1778 src_y += motion_y >> lowres + 1;
1780 src += src_y * stride + src_x;
1782 if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
1783 (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1784 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
1785 s->linesize, s->linesize,
1786 w + 1, (h + 1) << field_based,
1787 src_x, src_y << field_based,
1788 h_edge_pos, v_edge_pos);
1789 src = s->sc.edge_emu_buffer;
1793 sx = (sx << 2) >> lowres;
1794 sy = (sy << 2) >> lowres;
1797 pix_op[op_index](dest, src, stride, h, sx, sy);
1801 /* apply one mpeg motion vector to the three components */
1802 static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
1809 uint8_t **ref_picture,
1810 h264_chroma_mc_func *pix_op,
1811 int motion_x, int motion_y,
1814 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1815 int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
1816 ptrdiff_t uvlinesize, linesize;
1817 const int lowres = s->avctx->lowres;
1818 const int op_index = FFMIN(lowres-1+s->chroma_x_shift, 3);
1819 const int block_s = 8>>lowres;
1820 const int s_mask = (2 << lowres) - 1;
1821 const int h_edge_pos = s->h_edge_pos >> lowres;
1822 const int v_edge_pos = s->v_edge_pos >> lowres;
1823 linesize = s->current_picture.f->linesize[0] << field_based;
1824 uvlinesize = s->current_picture.f->linesize[1] << field_based;
1826 // FIXME obviously not perfect but qpel will not work in lowres anyway
1827 if (s->quarter_sample) {
1833 motion_y += (bottom_field - field_select)*((1 << lowres)-1);
1836 sx = motion_x & s_mask;
1837 sy = motion_y & s_mask;
1838 src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
1839 src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
1841 if (s->out_format == FMT_H263) {
1842 uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
1843 uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
1844 uvsrc_x = src_x >> 1;
1845 uvsrc_y = src_y >> 1;
1846 } else if (s->out_format == FMT_H261) {
1847 // even chroma mv's are full pel in H261
1850 uvsx = (2 * mx) & s_mask;
1851 uvsy = (2 * my) & s_mask;
1852 uvsrc_x = s->mb_x * block_s + (mx >> lowres);
1853 uvsrc_y = mb_y * block_s + (my >> lowres);
1855 if(s->chroma_y_shift){
1860 uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
1861 uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
1863 if(s->chroma_x_shift){
1867 uvsy = motion_y & s_mask;
1869 uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
1872 uvsx = motion_x & s_mask;
1873 uvsy = motion_y & s_mask;
1880 ptr_y = ref_picture[0] + src_y * linesize + src_x;
1881 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
1882 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
1884 if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
1885 (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
1886 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
1887 linesize >> field_based, linesize >> field_based,
1888 17, 17 + field_based,
1889 src_x, src_y << field_based, h_edge_pos,
1891 ptr_y = s->sc.edge_emu_buffer;
1892 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1893 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
1894 uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
1895 if (s->workaround_bugs & FF_BUG_IEDGE)
1896 vbuf -= s->uvlinesize;
1897 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
1898 uvlinesize >> field_based, uvlinesize >> field_based,
1900 uvsrc_x, uvsrc_y << field_based,
1901 h_edge_pos >> 1, v_edge_pos >> 1);
1902 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
1903 uvlinesize >> field_based,uvlinesize >> field_based,
1905 uvsrc_x, uvsrc_y << field_based,
1906 h_edge_pos >> 1, v_edge_pos >> 1);
1912 // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
1914 dest_y += s->linesize;
1915 dest_cb += s->uvlinesize;
1916 dest_cr += s->uvlinesize;
1920 ptr_y += s->linesize;
1921 ptr_cb += s->uvlinesize;
1922 ptr_cr += s->uvlinesize;
1925 sx = (sx << 2) >> lowres;
1926 sy = (sy << 2) >> lowres;
1927 pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
1929 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
1930 int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
1931 uvsx = (uvsx << 2) >> lowres;
1932 uvsy = (uvsy << 2) >> lowres;
1934 pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
1935 pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
1938 // FIXME h261 lowres loop filter
1941 static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
1942 uint8_t *dest_cb, uint8_t *dest_cr,
1943 uint8_t **ref_picture,
1944 h264_chroma_mc_func * pix_op,
1947 const int lowres = s->avctx->lowres;
1948 const int op_index = FFMIN(lowres, 3);
1949 const int block_s = 8 >> lowres;
1950 const int s_mask = (2 << lowres) - 1;
1951 const int h_edge_pos = s->h_edge_pos >> lowres + 1;
1952 const int v_edge_pos = s->v_edge_pos >> lowres + 1;
1953 int emu = 0, src_x, src_y, sx, sy;
1957 if (s->quarter_sample) {
1962 /* In case of 8X8, we construct a single chroma motion vector
1963 with a special rounding */
1964 mx = ff_h263_round_chroma(mx);
1965 my = ff_h263_round_chroma(my);
1969 src_x = s->mb_x * block_s + (mx >> lowres + 1);
1970 src_y = s->mb_y * block_s + (my >> lowres + 1);
1972 offset = src_y * s->uvlinesize + src_x;
1973 ptr = ref_picture[1] + offset;
1974 if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
1975 (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
1976 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
1977 s->uvlinesize, s->uvlinesize,
1979 src_x, src_y, h_edge_pos, v_edge_pos);
1980 ptr = s->sc.edge_emu_buffer;
1983 sx = (sx << 2) >> lowres;
1984 sy = (sy << 2) >> lowres;
1985 pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
1987 ptr = ref_picture[2] + offset;
1989 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
1990 s->uvlinesize, s->uvlinesize,
1992 src_x, src_y, h_edge_pos, v_edge_pos);
1993 ptr = s->sc.edge_emu_buffer;
1995 pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
1999 * motion compensation of a single macroblock
2001 * @param dest_y luma destination pointer
2002 * @param dest_cb chroma cb/u destination pointer
2003 * @param dest_cr chroma cr/v destination pointer
2004 * @param dir direction (0->forward, 1->backward)
2005 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
2006 * @param pix_op halfpel motion compensation function (average or put normally)
2007 * the motion vectors are taken from s->mv and the MV type from s->mv_type
2009 static inline void MPV_motion_lowres(MpegEncContext *s,
2010 uint8_t *dest_y, uint8_t *dest_cb,
2012 int dir, uint8_t **ref_picture,
2013 h264_chroma_mc_func *pix_op)
2017 const int lowres = s->avctx->lowres;
2018 const int block_s = 8 >>lowres;
2023 switch (s->mv_type) {
2025 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2027 ref_picture, pix_op,
2028 s->mv[dir][0][0], s->mv[dir][0][1],
2034 for (i = 0; i < 4; i++) {
2035 hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
2036 s->linesize) * block_s,
2037 ref_picture[0], 0, 0,
2038 (2 * mb_x + (i & 1)) * block_s,
2039 (2 * mb_y + (i >> 1)) * block_s,
2040 s->width, s->height, s->linesize,
2041 s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
2042 block_s, block_s, pix_op,
2043 s->mv[dir][i][0], s->mv[dir][i][1]);
2045 mx += s->mv[dir][i][0];
2046 my += s->mv[dir][i][1];
2049 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
2050 chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
2054 if (s->picture_structure == PICT_FRAME) {
2056 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2057 1, 0, s->field_select[dir][0],
2058 ref_picture, pix_op,
2059 s->mv[dir][0][0], s->mv[dir][0][1],
2062 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2063 1, 1, s->field_select[dir][1],
2064 ref_picture, pix_op,
2065 s->mv[dir][1][0], s->mv[dir][1][1],
2068 if (s->picture_structure != s->field_select[dir][0] + 1 &&
2069 s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
2070 ref_picture = s->current_picture_ptr->f->data;
2073 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2074 0, 0, s->field_select[dir][0],
2075 ref_picture, pix_op,
2077 s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
2081 for (i = 0; i < 2; i++) {
2082 uint8_t **ref2picture;
2084 if (s->picture_structure == s->field_select[dir][i] + 1 ||
2085 s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
2086 ref2picture = ref_picture;
2088 ref2picture = s->current_picture_ptr->f->data;
2091 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2092 0, 0, s->field_select[dir][i],
2093 ref2picture, pix_op,
2094 s->mv[dir][i][0], s->mv[dir][i][1] +
2095 2 * block_s * i, block_s, mb_y >> 1);
2097 dest_y += 2 * block_s * s->linesize;
2098 dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
2099 dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
2103 if (s->picture_structure == PICT_FRAME) {
2104 for (i = 0; i < 2; i++) {
2106 for (j = 0; j < 2; j++) {
2107 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2109 ref_picture, pix_op,
2110 s->mv[dir][2 * i + j][0],
2111 s->mv[dir][2 * i + j][1],
2114 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
2117 for (i = 0; i < 2; i++) {
2118 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
2119 0, 0, s->picture_structure != i + 1,
2120 ref_picture, pix_op,
2121 s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
2122 2 * block_s, mb_y >> 1);
2124 // after put we make avg of the same block
2125 pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
2127 // opposite parity is always in the same
2128 // frame if this is second field
2129 if (!s->first_field) {
2130 ref_picture = s->current_picture_ptr->f->data;
2141 * find the lowest MB row referenced in the MVs
2143 static int lowest_referenced_row(MpegEncContext *s, int dir)
2145 int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
2146 int my, off, i, mvs;
2148 if (s->picture_structure != PICT_FRAME || s->mcsel)
2151 switch (s->mv_type) {
2165 for (i = 0; i < mvs; i++) {
2166 my = s->mv[dir][i][1];
2167 my_max = FFMAX(my_max, my);
2168 my_min = FFMIN(my_min, my);
2171 off = ((FFMAX(-my_min, my_max)<<qpel_shift) + 63) >> 6;
2173 return av_clip(s->mb_y + off, 0, s->mb_height - 1);
2175 return s->mb_height-1;
2178 /* put block[] to dest[] */
2179 static inline void put_dct(MpegEncContext *s,
2180 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
2182 s->dct_unquantize_intra(s, block, i, qscale);
2183 s->idsp.idct_put(dest, line_size, block);
2186 /* add block[] to dest[] */
2187 static inline void add_dct(MpegEncContext *s,
2188 int16_t *block, int i, uint8_t *dest, int line_size)
2190 if (s->block_last_index[i] >= 0) {
2191 s->idsp.idct_add(dest, line_size, block);
2195 static inline void add_dequant_dct(MpegEncContext *s,
2196 int16_t *block, int i, uint8_t *dest, int line_size, int qscale)
2198 if (s->block_last_index[i] >= 0) {
2199 s->dct_unquantize_inter(s, block, i, qscale);
2201 s->idsp.idct_add(dest, line_size, block);
2206 * Clean dc, ac, coded_block for the current non-intra MB.
2208 void ff_clean_intra_table_entries(MpegEncContext *s)
2210 int wrap = s->b8_stride;
2211 int xy = s->block_index[0];
2214 s->dc_val[0][xy + 1 ] =
2215 s->dc_val[0][xy + wrap] =
2216 s->dc_val[0][xy + 1 + wrap] = 1024;
2218 memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
2219 memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
2220 if (s->msmpeg4_version>=3) {
2221 s->coded_block[xy ] =
2222 s->coded_block[xy + 1 ] =
2223 s->coded_block[xy + wrap] =
2224 s->coded_block[xy + 1 + wrap] = 0;
2227 wrap = s->mb_stride;
2228 xy = s->mb_x + s->mb_y * wrap;
2230 s->dc_val[2][xy] = 1024;
2232 memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
2233 memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
2235 s->mbintra_table[xy]= 0;
2238 /* generic function called after a macroblock has been parsed by the
2239 decoder or after it has been encoded by the encoder.
2241 Important variables used:
2242 s->mb_intra : true if intra macroblock
2243 s->mv_dir : motion vector direction
2244 s->mv_type : motion vector type
2245 s->mv : motion vector
2246 s->interlaced_dct : true if interlaced dct used (mpeg2)
2248 static av_always_inline
2249 void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
2250 int lowres_flag, int is_mpeg12)
2252 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
2255 s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) {
2256 s->avctx->hwaccel->decode_mb(s);//xvmc uses pblocks
2260 if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
2261 /* print DCT coefficients */
2263 av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
2265 for(j=0; j<64; j++){
2266 av_log(s->avctx, AV_LOG_DEBUG, "%5d",
2267 block[i][s->idsp.idct_permutation[j]]);
2269 av_log(s->avctx, AV_LOG_DEBUG, "\n");
2273 s->current_picture.qscale_table[mb_xy] = s->qscale;
2275 /* update DC predictors for P macroblocks */
2277 if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
2278 if(s->mbintra_table[mb_xy])
2279 ff_clean_intra_table_entries(s);
2283 s->last_dc[2] = 128 << s->intra_dc_precision;
2286 else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
2287 s->mbintra_table[mb_xy]=1;
2289 if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) || s->frame_skip_threshold || s->frame_skip_factor ||
2290 !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
2291 s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
2292 uint8_t *dest_y, *dest_cb, *dest_cr;
2293 int dct_linesize, dct_offset;
2294 op_pixels_func (*op_pix)[4];
2295 qpel_mc_func (*op_qpix)[16];
2296 const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2297 const int uvlinesize = s->current_picture.f->linesize[1];
2298 const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
2299 const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
2301 /* avoid copy if macroblock skipped in last frame too */
2302 /* skip only during decoding as we might trash the buffers during encoding a bit */
2304 uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
2306 if (s->mb_skipped) {
2308 av_assert2(s->pict_type!=AV_PICTURE_TYPE_I);
2310 } else if(!s->current_picture.reference) {
2313 *mbskip_ptr = 0; /* not skipped */
2317 dct_linesize = linesize << s->interlaced_dct;
2318 dct_offset = s->interlaced_dct ? linesize : linesize * block_size;
2322 dest_cb= s->dest[1];
2323 dest_cr= s->dest[2];
2325 dest_y = s->sc.b_scratchpad;
2326 dest_cb= s->sc.b_scratchpad+16*linesize;
2327 dest_cr= s->sc.b_scratchpad+32*linesize;
2331 /* motion handling */
2332 /* decoding or more than one mb_type (MC was already done otherwise) */
2335 if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
2336 if (s->mv_dir & MV_DIR_FORWARD) {
2337 ff_thread_await_progress(&s->last_picture_ptr->tf,
2338 lowest_referenced_row(s, 0),
2341 if (s->mv_dir & MV_DIR_BACKWARD) {
2342 ff_thread_await_progress(&s->next_picture_ptr->tf,
2343 lowest_referenced_row(s, 1),
2349 h264_chroma_mc_func *op_pix = s->h264chroma.put_h264_chroma_pixels_tab;
2351 if (s->mv_dir & MV_DIR_FORWARD) {
2352 MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix);
2353 op_pix = s->h264chroma.avg_h264_chroma_pixels_tab;
2355 if (s->mv_dir & MV_DIR_BACKWARD) {
2356 MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix);
2359 op_qpix = s->me.qpel_put;
2360 if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){
2361 op_pix = s->hdsp.put_pixels_tab;
2363 op_pix = s->hdsp.put_no_rnd_pixels_tab;
2365 if (s->mv_dir & MV_DIR_FORWARD) {
2366 ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix);
2367 op_pix = s->hdsp.avg_pixels_tab;
2368 op_qpix= s->me.qpel_avg;
2370 if (s->mv_dir & MV_DIR_BACKWARD) {
2371 ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix);
2376 /* skip dequant / idct if we are really late ;) */
2377 if(s->avctx->skip_idct){
2378 if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
2379 ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
2380 || s->avctx->skip_idct >= AVDISCARD_ALL)
2384 /* add dct residue */
2385 if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
2386 || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
2387 add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2388 add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2389 add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2390 add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2392 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2393 if (s->chroma_y_shift){
2394 add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2395 add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2399 add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2400 add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2401 add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2402 add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2405 } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){
2406 add_dct(s, block[0], 0, dest_y , dct_linesize);
2407 add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
2408 add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
2409 add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
2411 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2412 if(s->chroma_y_shift){//Chroma420
2413 add_dct(s, block[4], 4, dest_cb, uvlinesize);
2414 add_dct(s, block[5], 5, dest_cr, uvlinesize);
2417 dct_linesize = uvlinesize << s->interlaced_dct;
2418 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2420 add_dct(s, block[4], 4, dest_cb, dct_linesize);
2421 add_dct(s, block[5], 5, dest_cr, dct_linesize);
2422 add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
2423 add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
2424 if(!s->chroma_x_shift){//Chroma444
2425 add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
2426 add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
2427 add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
2428 add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
2433 else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) {
2434 ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
2437 /* dct only in intra block */
2438 if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
2439 put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
2440 put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
2441 put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
2442 put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
2444 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2445 if(s->chroma_y_shift){
2446 put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
2447 put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
2451 put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
2452 put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
2453 put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
2454 put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
2458 s->idsp.idct_put(dest_y, dct_linesize, block[0]);
2459 s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
2460 s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]);
2461 s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
2463 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2464 if(s->chroma_y_shift){
2465 s->idsp.idct_put(dest_cb, uvlinesize, block[4]);
2466 s->idsp.idct_put(dest_cr, uvlinesize, block[5]);
2469 dct_linesize = uvlinesize << s->interlaced_dct;
2470 dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize*block_size;
2472 s->idsp.idct_put(dest_cb, dct_linesize, block[4]);
2473 s->idsp.idct_put(dest_cr, dct_linesize, block[5]);
2474 s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
2475 s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
2476 if(!s->chroma_x_shift){//Chroma444
2477 s->idsp.idct_put(dest_cb + block_size, dct_linesize, block[8]);
2478 s->idsp.idct_put(dest_cr + block_size, dct_linesize, block[9]);
2479 s->idsp.idct_put(dest_cb + block_size + dct_offset, dct_linesize, block[10]);
2480 s->idsp.idct_put(dest_cr + block_size + dct_offset, dct_linesize, block[11]);
2488 s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
2489 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
2490 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
2491 s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
2497 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
2500 if(s->out_format == FMT_MPEG1) {
2501 if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 1);
2502 else mpv_reconstruct_mb_internal(s, block, 0, 1);
2505 if(s->avctx->lowres) mpv_reconstruct_mb_internal(s, block, 1, 0);
2506 else mpv_reconstruct_mb_internal(s, block, 0, 0);
2509 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
2511 ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
2512 s->last_picture_ptr ? s->last_picture_ptr->f : NULL, y, h, s->picture_structure,
2513 s->first_field, s->low_delay);
2516 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
2517 const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
2518 const int uvlinesize = s->current_picture.f->linesize[1];
2519 const int mb_size= 4 - s->avctx->lowres;
2521 s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
2522 s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
2523 s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
2524 s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
2525 s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2526 s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
2527 //block_index is not used by mpeg2, so it is not affected by chroma_format
2529 s->dest[0] = s->current_picture.f->data[0] + (int)((s->mb_x - 1U) << mb_size);
2530 s->dest[1] = s->current_picture.f->data[1] + (int)((s->mb_x - 1U) << (mb_size - s->chroma_x_shift));
2531 s->dest[2] = s->current_picture.f->data[2] + (int)((s->mb_x - 1U) << (mb_size - s->chroma_x_shift));
2533 if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
2535 if(s->picture_structure==PICT_FRAME){
2536 s->dest[0] += s->mb_y * linesize << mb_size;
2537 s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
2538 s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
2540 s->dest[0] += (s->mb_y>>1) * linesize << mb_size;
2541 s->dest[1] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
2542 s->dest[2] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift);
2543 av_assert1((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD));
2548 void ff_mpeg_flush(AVCodecContext *avctx){
2550 MpegEncContext *s = avctx->priv_data;
2552 if (!s || !s->picture)
2555 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2556 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
2557 s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
2559 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
2560 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
2561 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
2563 s->mb_x= s->mb_y= 0;
2566 s->parse_context.state= -1;
2567 s->parse_context.frame_start_found= 0;
2568 s->parse_context.overread= 0;
2569 s->parse_context.overread_index= 0;
2570 s->parse_context.index= 0;
2571 s->parse_context.last_index= 0;
2572 s->bitstream_buffer_size=0;
2577 * set qscale and update qscale dependent variables.
2579 void ff_set_qscale(MpegEncContext * s, int qscale)
2583 else if (qscale > 31)
2587 s->chroma_qscale= s->chroma_qscale_table[qscale];
2589 s->y_dc_scale= s->y_dc_scale_table[ qscale ];
2590 s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
2593 void ff_mpv_report_decode_progress(MpegEncContext *s)
2595 if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
2596 ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);