FFmpeg  4.4.4
mpeg_er.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "error_resilience.h"
20 #include "mpegvideo.h"
21 #include "mpeg_er.h"
22 
23 static void set_erpic(ERPicture *dst, Picture *src)
24 {
25  int i;
26 
27  memset(dst, 0, sizeof(*dst));
28  if (!src) {
29  dst->f = NULL;
30  dst->tf = NULL;
31  return;
32  }
33 
34  dst->f = src->f;
35  dst->tf = &src->tf;
36 
37  for (i = 0; i < 2; i++) {
38  dst->motion_val[i] = src->motion_val[i];
39  dst->ref_index[i] = src->ref_index[i];
40  }
41 
42  dst->mb_type = src->mb_type;
43  dst->field_picture = src->field_picture;
44 }
45 
47 {
48  ERContext *er = &s->er;
49 
50  set_erpic(&er->cur_pic, s->current_picture_ptr);
51  set_erpic(&er->next_pic, s->next_picture_ptr);
52  set_erpic(&er->last_pic, s->last_picture_ptr);
53 
54  er->pp_time = s->pp_time;
55  er->pb_time = s->pb_time;
56  er->quarter_sample = s->quarter_sample;
57  er->partitioned_frame = s->partitioned_frame;
58 
60 }
61 
62 static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
63  int (*mv)[2][4][2], int mb_x, int mb_y,
64  int mb_intra, int mb_skipped)
65 {
66  MpegEncContext *s = opaque;
67 
68  s->mv_dir = mv_dir;
69  s->mv_type = mv_type;
70  s->mb_intra = mb_intra;
71  s->mb_skipped = mb_skipped;
72  s->mb_x = mb_x;
73  s->mb_y = mb_y;
74  s->mcsel = 0;
75  memcpy(s->mv, mv, sizeof(*mv));
76 
79 
80  s->bdsp.clear_blocks(s->block[0]);
81  if (!s->chroma_y_shift)
82  s->bdsp.clear_blocks(s->block[6]);
83 
84  s->dest[0] = s->current_picture.f->data[0] +
85  s->mb_y * 16 * s->linesize +
86  s->mb_x * 16;
87  s->dest[1] = s->current_picture.f->data[1] +
88  s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize +
89  s->mb_x * (16 >> s->chroma_x_shift);
90  s->dest[2] = s->current_picture.f->data[2] +
91  s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize +
92  s->mb_x * (16 >> s->chroma_x_shift);
93 
94  if (ref)
95  av_log(s->avctx, AV_LOG_DEBUG,
96  "Interlaced error concealment is not fully implemented\n");
97  ff_mpv_reconstruct_mb(s, s->block);
98 }
99 
101 {
102  ERContext *er = &s->er;
103  int mb_array_size = s->mb_height * s->mb_stride;
104  int i;
105 
106  er->avctx = s->avctx;
107 
108  er->mb_index2xy = s->mb_index2xy;
109  er->mb_num = s->mb_num;
110  er->mb_width = s->mb_width;
111  er->mb_height = s->mb_height;
112  er->mb_stride = s->mb_stride;
113  er->b8_stride = s->b8_stride;
114 
115  er->er_temp_buffer = av_malloc(s->mb_height * s->mb_stride * (4*sizeof(int) + 1));
116  er->error_status_table = av_mallocz(mb_array_size);
117  if (!er->er_temp_buffer || !er->error_status_table)
118  goto fail;
119 
120  er->mbskip_table = s->mbskip_table;
121  er->mbintra_table = s->mbintra_table;
122 
123  for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
124  er->dc_val[i] = s->dc_val[i];
125 
127  er->opaque = s;
128 
129  return 0;
130 fail:
131  av_freep(&er->er_temp_buffer);
133  return AVERROR(ENOMEM);
134 }
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
#define NULL
Definition: coverity.c:32
void ff_er_frame_start(ERContext *s)
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
int i
Definition: input.c:407
static const int8_t mv[256][2]
Definition: 4xm.c:78
static void set_erpic(ERPicture *dst, Picture *src)
Definition: mpeg_er.c:23
int ff_mpeg_er_init(MpegEncContext *s)
Definition: mpeg_er.c:100
static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
Definition: mpeg_er.c:62
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:46
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2248
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2267
mpegvideo header.
static void ff_update_block_index(MpegEncContext *s)
Definition: mpegvideo.h:750
#define FF_ARRAY_ELEMS(a)
ptrdiff_t mb_stride
uint16_t pp_time
ERPicture next_pic
int16_t * dc_val[3]
ERPicture cur_pic
uint8_t * er_temp_buffer
uint8_t * error_status_table
uint8_t * mbintra_table
uint16_t pb_time
int * mb_index2xy
ptrdiff_t b8_stride
int partitioned_frame
void(* decode_mb)(void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
AVCodecContext * avctx
ERPicture last_pic
uint8_t * mbskip_table
int8_t * ref_index[2]
int16_t(*[2] motion_val)[2]
AVFrame * f
ThreadFrame * tf
uint32_t * mb_type
MpegEncContext.
Definition: mpegvideo.h:81
Picture.
Definition: mpegpicture.h:45
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
#define src
Definition: vp8dsp.c:255
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107