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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 
53 
54  er->pp_time = s->pp_time;
55  er->pb_time = s->pb_time;
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 
82  s->dest[0] = s->current_picture.f->data[0] +
83  s->mb_y * 16 * s->linesize +
84  s->mb_x * 16;
85  s->dest[1] = s->current_picture.f->data[1] +
86  s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize +
87  s->mb_x * (16 >> s->chroma_x_shift);
88  s->dest[2] = s->current_picture.f->data[2] +
89  s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize +
90  s->mb_x * (16 >> s->chroma_x_shift);
91 
92  if (ref)
94  "Interlaced error concealment is not fully implemented\n");
96 }
97 
99 {
100  ERContext *er = &s->er;
101  int mb_array_size = s->mb_height * s->mb_stride;
102  int i;
103 
104  er->avctx = s->avctx;
105 
106  er->mb_index2xy = s->mb_index2xy;
107  er->mb_num = s->mb_num;
108  er->mb_width = s->mb_width;
109  er->mb_height = s->mb_height;
110  er->mb_stride = s->mb_stride;
111  er->b8_stride = s->b8_stride;
112 
113  er->er_temp_buffer = av_malloc(s->mb_height * s->mb_stride * (4*sizeof(int) + 1));
114  er->error_status_table = av_mallocz(mb_array_size);
115  if (!er->er_temp_buffer || !er->error_status_table)
116  goto fail;
117 
118  er->mbskip_table = s->mbskip_table;
119  er->mbintra_table = s->mbintra_table;
120 
121  for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
122  er->dc_val[i] = s->dc_val[i];
123 
125  er->opaque = s;
126 
127  return 0;
128 fail:
129  av_freep(&er->er_temp_buffer);
131  return AVERROR(ENOMEM);
132 }
#define NULL
Definition: coverity.c:32
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2202
int8_t * ref_index[2]
Definition: mpegpicture.h:62
const char * s
Definition: avisynth_c.h:768
void(* clear_blocks)(int16_t *blocks)
Definition: blockdsp.h:37
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:79
uint32_t * mb_type
ERPicture last_pic
mpegvideo header.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:130
#define src
Definition: vp8dsp.c:254
int chroma_x_shift
Definition: mpegvideo.h:473
uint16_t pp_time
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
ptrdiff_t b8_stride
#define av_malloc(s)
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:177
ERPicture cur_pic
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:387
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
#define av_log(a,...)
static void ff_update_block_index(MpegEncContext *s)
Definition: mpegvideo.h:724
ThreadFrame tf
Definition: mpegpicture.h:47
int16_t * dc_val[3]
used for MPEG-4 DC prediction, all 3 arrays must be continuous
Definition: mpegvideo.h:184
int mb_skipped
MUST BE SET only during DECODING.
Definition: mpegvideo.h:192
int chroma_y_shift
Definition: mpegvideo.h:474
int partitioned_frame
is current frame partitioned
Definition: mpegvideo.h:400
#define AVERROR(e)
Definition: error.h:43
ERContext er
Definition: mpegvideo.h:548
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
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)
ThreadFrame * tf
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:396
static void set_erpic(ERPicture *dst, Picture *src)
Definition: mpeg_er.c:23
#define fail()
Definition: checkasm.h:112
uint8_t * mbintra_table
int * mb_index2xy
uint8_t * error_status_table
int ff_mpeg_er_init(MpegEncContext *s)
Definition: mpeg_er.c:98
uint8_t * er_temp_buffer
uint8_t * mbskip_table
used to avoid copy if macroblock skipped (for black regions for example) and used for B-frame encodin...
Definition: mpegvideo.h:193
int16_t(*[2] motion_val)[2]
Definition: mpegpicture.h:53
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
void ff_mpeg_er_frame_start(MpegEncContext *s)
Definition: mpeg_er.c:46
Picture.
Definition: mpegpicture.h:45
uint16_t pb_time
uint8_t * mbintra_table
used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
Definition: mpegvideo.h:195
#define FF_ARRAY_ELEMS(a)
int * mb_index2xy
mb_index -> mb_x + mb_y*mb_stride
Definition: mpegvideo.h:294
static const int8_t mv[256][2]
Definition: 4xm.c:77
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
BlockDSPContext bdsp
Definition: mpegvideo.h:223
ERPicture next_pic
struct AVFrame * f
Definition: mpegpicture.h:46
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
AVCodecContext * avctx
int8_t * ref_index[2]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
Definition: mpegvideo.h:273
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
MpegEncContext.
Definition: mpegvideo.h:78
Picture * next_picture_ptr
pointer to the next picture (for bidir pred)
Definition: mpegvideo.h:180
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
int partitioned_frame
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
uint8_t * dest[3]
Definition: mpegvideo.h:292
int16_t * dc_val[3]
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:179
AVFrame * f
int16_t(*[2] motion_val)[2]
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
Definition: mpegvideo.c:2183
int16_t(* block)[64]
points to one of the following blocks
Definition: mpegvideo.h:495
void ff_er_frame_start(ERContext *s)
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegpicture.h:56
#define av_freep(p)
ptrdiff_t mb_stride
uint8_t * mbskip_table
uint16_t pb_time
time distance between the last b and p,s,i frame
Definition: mpegvideo.h:388