1/*
2 * Common mpeg video decoding code
3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include <limits.h>
24
25#include "libavutil/avassert.h"
26#include "libavutil/imgutils.h"
27#include "libavutil/internal.h"
28#include "libavutil/video_enc_params.h"
29
30#include "avcodec.h"
31#include "internal.h"
32#include "mpegutils.h"
33#include "mpegvideo.h"
34#include "mpegvideodec.h"
35#include "threadframe.h"
36
37void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
38{
39    ff_mpv_common_defaults(s);
40
41    s->avctx           = avctx;
42    s->width           = avctx->coded_width;
43    s->height          = avctx->coded_height;
44    s->codec_id        = avctx->codec->id;
45    s->workaround_bugs = avctx->workaround_bugs;
46
47    /* convert fourcc to upper case */
48    s->codec_tag       = ff_toupper4(avctx->codec_tag);
49}
50
51int ff_mpeg_update_thread_context(AVCodecContext *dst,
52                                  const AVCodecContext *src)
53{
54    MpegEncContext *const s1 = src->priv_data;
55    MpegEncContext *const s  = dst->priv_data;
56    int ret;
57
58    if (dst == src)
59        return 0;
60
61    av_assert0(s != s1);
62
63    // FIXME can parameters change on I-frames?
64    // in that case dst may need a reinit
65    if (!s->context_initialized) {
66        void *private_ctx = s->private_ctx;
67        int err;
68        memcpy(s, s1, sizeof(*s));
69
70        s->avctx                 = dst;
71        s->private_ctx           = private_ctx;
72        s->bitstream_buffer      = NULL;
73        s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
74
75        if (s1->context_initialized) {
76//             s->picture_range_start  += MAX_PICTURE_COUNT;
77//             s->picture_range_end    += MAX_PICTURE_COUNT;
78            ff_mpv_idct_init(s);
79            if ((err = ff_mpv_common_init(s)) < 0) {
80                memset(s, 0, sizeof(*s));
81                s->avctx = dst;
82                s->private_ctx = private_ctx;
83                return err;
84            }
85        }
86    }
87
88    if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
89        s->height = s1->height;
90        s->width  = s1->width;
91        if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
92            return ret;
93    }
94
95    s->avctx->coded_height  = s1->avctx->coded_height;
96    s->avctx->coded_width   = s1->avctx->coded_width;
97    s->avctx->width         = s1->avctx->width;
98    s->avctx->height        = s1->avctx->height;
99
100    s->quarter_sample       = s1->quarter_sample;
101
102    s->coded_picture_number = s1->coded_picture_number;
103    s->picture_number       = s1->picture_number;
104
105    av_assert0(!s->picture || s->picture != s1->picture);
106    if (s->picture)
107        for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
108            ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
109            if (s1->picture && s1->picture[i].f->buf[0] &&
110                (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
111                return ret;
112        }
113
114#define UPDATE_PICTURE(pic)\
115do {\
116    ff_mpeg_unref_picture(s->avctx, &s->pic);\
117    if (s1->pic.f && s1->pic.f->buf[0])\
118        ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
119    else\
120        ret = ff_update_picture_tables(&s->pic, &s1->pic);\
121    if (ret < 0)\
122        return ret;\
123} while (0)
124
125    UPDATE_PICTURE(current_picture);
126    UPDATE_PICTURE(last_picture);
127    UPDATE_PICTURE(next_picture);
128
129#define REBASE_PICTURE(pic, new_ctx, old_ctx)                                 \
130    ((pic && pic >= old_ctx->picture &&                                       \
131      pic < old_ctx->picture + MAX_PICTURE_COUNT) ?                           \
132        &new_ctx->picture[pic - old_ctx->picture] : NULL)
133
134    s->last_picture_ptr    = REBASE_PICTURE(s1->last_picture_ptr,    s, s1);
135    s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
136    s->next_picture_ptr    = REBASE_PICTURE(s1->next_picture_ptr,    s, s1);
137
138    // Error/bug resilience
139    s->workaround_bugs      = s1->workaround_bugs;
140    s->padding_bug_score    = s1->padding_bug_score;
141
142    // MPEG-4 timing info
143    memcpy(&s->last_time_base, &s1->last_time_base,
144           (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
145           (char *) &s1->last_time_base);
146
147    // B-frame info
148    s->max_b_frames = s1->max_b_frames;
149    s->low_delay    = s1->low_delay;
150    s->droppable    = s1->droppable;
151
152    // DivX handling (doesn't work)
153    s->divx_packed  = s1->divx_packed;
154
155    if (s1->bitstream_buffer) {
156        if (s1->bitstream_buffer_size +
157            AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
158            av_fast_malloc(&s->bitstream_buffer,
159                           &s->allocated_bitstream_buffer_size,
160                           s1->allocated_bitstream_buffer_size);
161            if (!s->bitstream_buffer) {
162                s->bitstream_buffer_size = 0;
163                return AVERROR(ENOMEM);
164            }
165        }
166        s->bitstream_buffer_size = s1->bitstream_buffer_size;
167        memcpy(s->bitstream_buffer, s1->bitstream_buffer,
168               s1->bitstream_buffer_size);
169        memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
170               AV_INPUT_BUFFER_PADDING_SIZE);
171    }
172
173    // linesize-dependent scratch buffer allocation
174    if (!s->sc.edge_emu_buffer)
175        if (s1->linesize) {
176            if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
177                                        &s->sc, s1->linesize) < 0) {
178                av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
179                       "scratch buffers.\n");
180                return AVERROR(ENOMEM);
181            }
182        } else {
183            av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
184                   "be allocated due to unknown size.\n");
185        }
186
187    // MPEG-2/interlacing info
188    memcpy(&s->progressive_sequence, &s1->progressive_sequence,
189           (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
190
191    return 0;
192}
193
194int ff_mpv_common_frame_size_change(MpegEncContext *s)
195{
196    int err = 0;
197
198    if (!s->context_initialized)
199        return AVERROR(EINVAL);
200
201    ff_mpv_free_context_frame(s);
202
203    if (s->picture)
204        for (int i = 0; i < MAX_PICTURE_COUNT; i++)
205            s->picture[i].needs_realloc = 1;
206
207    s->last_picture_ptr         =
208    s->next_picture_ptr         =
209    s->current_picture_ptr      = NULL;
210
211    // init
212    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
213        s->mb_height = (s->height + 31) / 32 * 2;
214    else
215        s->mb_height = (s->height + 15) / 16;
216
217    if ((s->width || s->height) &&
218        (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
219        goto fail;
220
221    /* set chroma shifts */
222    err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
223                                           &s->chroma_x_shift,
224                                           &s->chroma_y_shift);
225    if (err < 0)
226        goto fail;
227
228    if ((err = ff_mpv_init_context_frame(s)))
229        goto fail;
230
231    memset(s->thread_context, 0, sizeof(s->thread_context));
232    s->thread_context[0]   = s;
233
234    if (s->width && s->height) {
235        err = ff_mpv_init_duplicate_contexts(s);
236        if (err < 0)
237            goto fail;
238    }
239    s->context_reinit = 0;
240
241    return 0;
242 fail:
243    ff_mpv_free_context_frame(s);
244    s->context_reinit = 1;
245    return err;
246}
247
248static int alloc_picture(MpegEncContext *s, Picture *pic)
249{
250    return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, 0, 0,
251                            s->chroma_x_shift, s->chroma_y_shift, s->out_format,
252                            s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
253                            &s->linesize, &s->uvlinesize);
254}
255
256static void gray_frame(AVFrame *frame)
257{
258    int h_chroma_shift, v_chroma_shift;
259
260    av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
261
262    for (int i = 0; i < frame->height; i++)
263        memset(frame->data[0] + frame->linesize[0] * i, 0x80, frame->width);
264    for (int i = 0; i < AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
265        memset(frame->data[1] + frame->linesize[1] * i,
266               0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
267        memset(frame->data[2] + frame->linesize[2] * i,
268               0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
269    }
270}
271
272/**
273 * generic function called after decoding
274 * the header and before a frame is decoded.
275 */
276int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
277{
278    Picture *pic;
279    int idx, ret;
280
281    s->mb_skipped = 0;
282
283    if (!ff_thread_can_start_frame(avctx)) {
284        av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
285        return -1;
286    }
287
288    /* mark & release old frames */
289    if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
290        s->last_picture_ptr != s->next_picture_ptr &&
291        s->last_picture_ptr->f->buf[0]) {
292        ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
293    }
294
295    /* release forgotten pictures */
296    /* if (MPEG-124 / H.263) */
297    for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
298        if (&s->picture[i] != s->last_picture_ptr &&
299            &s->picture[i] != s->next_picture_ptr &&
300            s->picture[i].reference && !s->picture[i].needs_realloc) {
301            ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
302        }
303    }
304
305    ff_mpeg_unref_picture(s->avctx, &s->current_picture);
306    ff_mpeg_unref_picture(s->avctx, &s->last_picture);
307    ff_mpeg_unref_picture(s->avctx, &s->next_picture);
308
309    /* release non reference frames */
310    for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
311        if (!s->picture[i].reference)
312            ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
313    }
314
315    if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
316        // we already have an unused image
317        // (maybe it was set before reading the header)
318        pic = s->current_picture_ptr;
319    } else {
320        idx = ff_find_unused_picture(s->avctx, s->picture, 0);
321        if (idx < 0) {
322            av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
323            return idx;
324        }
325        pic = &s->picture[idx];
326    }
327
328    pic->reference = 0;
329    if (!s->droppable) {
330        if (s->pict_type != AV_PICTURE_TYPE_B)
331            pic->reference = 3;
332    }
333
334    pic->f->coded_picture_number = s->coded_picture_number++;
335
336    if (alloc_picture(s, pic) < 0)
337        return -1;
338
339    s->current_picture_ptr = pic;
340    // FIXME use only the vars from current_pic
341    s->current_picture_ptr->f->top_field_first = s->top_field_first;
342    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
343        s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
344        if (s->picture_structure != PICT_FRAME)
345            s->current_picture_ptr->f->top_field_first =
346                (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
347    }
348    s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
349                                                 !s->progressive_sequence;
350    s->current_picture_ptr->field_picture      =  s->picture_structure != PICT_FRAME;
351
352    s->current_picture_ptr->f->pict_type = s->pict_type;
353    s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
354
355    if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
356                                   s->current_picture_ptr)) < 0)
357        return ret;
358
359    if (s->pict_type != AV_PICTURE_TYPE_B) {
360        s->last_picture_ptr = s->next_picture_ptr;
361        if (!s->droppable)
362            s->next_picture_ptr = s->current_picture_ptr;
363    }
364    ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
365            s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
366            s->last_picture_ptr    ? s->last_picture_ptr->f->data[0]    : NULL,
367            s->next_picture_ptr    ? s->next_picture_ptr->f->data[0]    : NULL,
368            s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
369            s->pict_type, s->droppable);
370
371    if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
372        (s->pict_type != AV_PICTURE_TYPE_I)) {
373        int h_chroma_shift, v_chroma_shift;
374        av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
375                                         &h_chroma_shift, &v_chroma_shift);
376        if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
377            av_log(avctx, AV_LOG_DEBUG,
378                   "allocating dummy last picture for B frame\n");
379        else if (s->pict_type != AV_PICTURE_TYPE_I)
380            av_log(avctx, AV_LOG_ERROR,
381                   "warning: first frame is no keyframe\n");
382
383        /* Allocate a dummy frame */
384        idx = ff_find_unused_picture(s->avctx, s->picture, 0);
385        if (idx < 0) {
386            av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
387            return idx;
388        }
389        s->last_picture_ptr = &s->picture[idx];
390
391        s->last_picture_ptr->reference    = 3;
392        s->last_picture_ptr->f->key_frame = 0;
393        s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
394
395        if (alloc_picture(s, s->last_picture_ptr) < 0) {
396            s->last_picture_ptr = NULL;
397            return -1;
398        }
399
400        if (!avctx->hwaccel) {
401            for (int i = 0; i < avctx->height; i++)
402                memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
403                       0x80, avctx->width);
404            if (s->last_picture_ptr->f->data[2]) {
405                for (int i = 0; i < AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
406                    memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
407                        0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
408                    memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
409                        0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
410                }
411            }
412
413            if (s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263) {
414                for (int i = 0; i < avctx->height; i++)
415                    memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0] * i,
416                           16, avctx->width);
417            }
418        }
419
420        ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
421        ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
422    }
423    if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
424        s->pict_type == AV_PICTURE_TYPE_B) {
425        /* Allocate a dummy frame */
426        idx = ff_find_unused_picture(s->avctx, s->picture, 0);
427        if (idx < 0) {
428            av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
429            return idx;
430        }
431        s->next_picture_ptr = &s->picture[idx];
432
433        s->next_picture_ptr->reference   = 3;
434        s->next_picture_ptr->f->key_frame = 0;
435        s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
436
437        if (alloc_picture(s, s->next_picture_ptr) < 0) {
438            s->next_picture_ptr = NULL;
439            return -1;
440        }
441        ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
442        ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
443    }
444
445#if 0 // BUFREF-FIXME
446    memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
447    memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
448#endif
449    if (s->last_picture_ptr) {
450        if (s->last_picture_ptr->f->buf[0] &&
451            (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
452                                       s->last_picture_ptr)) < 0)
453            return ret;
454    }
455    if (s->next_picture_ptr) {
456        if (s->next_picture_ptr->f->buf[0] &&
457            (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
458                                       s->next_picture_ptr)) < 0)
459            return ret;
460    }
461
462    av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
463                                                 s->last_picture_ptr->f->buf[0]));
464
465    if (s->picture_structure != PICT_FRAME) {
466        for (int i = 0; i < 4; i++) {
467            if (s->picture_structure == PICT_BOTTOM_FIELD) {
468                s->current_picture.f->data[i] +=
469                    s->current_picture.f->linesize[i];
470            }
471            s->current_picture.f->linesize[i] *= 2;
472            s->last_picture.f->linesize[i]    *= 2;
473            s->next_picture.f->linesize[i]    *= 2;
474        }
475    }
476
477    /* set dequantizer, we can't do it during init as
478     * it might change for MPEG-4 and we can't do it in the header
479     * decode as init is not called for MPEG-4 there yet */
480    if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
481        s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
482        s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
483    } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
484        s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
485        s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
486    } else {
487        s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
488        s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
489    }
490
491    if (s->avctx->debug & FF_DEBUG_NOMC)
492        gray_frame(s->current_picture_ptr->f);
493
494    return 0;
495}
496
497/* called after a frame has been decoded. */
498void ff_mpv_frame_end(MpegEncContext *s)
499{
500    emms_c();
501
502    if (s->current_picture.reference)
503        ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
504}
505
506void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
507{
508    ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
509                         p->qscale_table, p->motion_val,
510                         s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
511}
512
513int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
514{
515    AVVideoEncParams *par;
516    int mult = (qp_type == FF_MPV_QSCALE_TYPE_MPEG1) ? 2 : 1;
517    unsigned int nb_mb = p->alloc_mb_height * p->alloc_mb_width;
518
519    if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS))
520        return 0;
521
522    par = av_video_enc_params_create_side_data(f, AV_VIDEO_ENC_PARAMS_MPEG2, nb_mb);
523    if (!par)
524        return AVERROR(ENOMEM);
525
526    for (unsigned y = 0; y < p->alloc_mb_height; y++)
527        for (unsigned x = 0; x < p->alloc_mb_width; x++) {
528            const unsigned int block_idx = y * p->alloc_mb_width + x;
529            const unsigned int     mb_xy = y * p->alloc_mb_stride + x;
530            AVVideoBlockParams *const b = av_video_enc_params_block(par, block_idx);
531
532            b->src_x = x * 16;
533            b->src_y = y * 16;
534            b->w     = 16;
535            b->h     = 16;
536
537            b->delta_qp = p->qscale_table[mb_xy] * mult;
538        }
539
540    return 0;
541}
542
543void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
544{
545    ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
546                       s->last_picture_ptr ? s->last_picture_ptr->f : NULL,
547                       y, h, s->picture_structure,
548                       s->first_field, s->low_delay);
549}
550
551void ff_mpeg_flush(AVCodecContext *avctx)
552{
553    MpegEncContext *const s = avctx->priv_data;
554
555    if (!s->picture)
556        return;
557
558    for (int i = 0; i < MAX_PICTURE_COUNT; i++)
559        ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
560    s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
561
562    ff_mpeg_unref_picture(s->avctx, &s->current_picture);
563    ff_mpeg_unref_picture(s->avctx, &s->last_picture);
564    ff_mpeg_unref_picture(s->avctx, &s->next_picture);
565
566    s->mb_x = s->mb_y = 0;
567
568#if FF_API_FLAG_TRUNCATED
569    s->parse_context.state = -1;
570    s->parse_context.frame_start_found = 0;
571    s->parse_context.overread = 0;
572    s->parse_context.overread_index = 0;
573    s->parse_context.index = 0;
574    s->parse_context.last_index = 0;
575#endif
576    s->bitstream_buffer_size = 0;
577    s->pp_time = 0;
578}
579
580void ff_mpv_report_decode_progress(MpegEncContext *s)
581{
582    if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
583        ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
584}
585