2 * This file is part of FFmpeg.
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.
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.
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
19 #include "error_resilience.h"
20 #include "mpegvideo.h"
23 static void set_erpic(ERPicture *dst, Picture *src)
27 memset(dst, 0, sizeof(*dst));
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];
42 dst->mb_type = src->mb_type;
43 dst->field_picture = src->field_picture;
46 void ff_mpeg_er_frame_start(MpegEncContext *s)
48 ERContext *er = &s->er;
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);
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;
59 ff_er_frame_start(er);
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)
66 MpegEncContext *s = opaque;
70 s->mb_intra = mb_intra;
71 s->mb_skipped = mb_skipped;
75 memcpy(s->mv, mv, sizeof(*mv));
77 ff_init_block_index(s);
78 ff_update_block_index(s);
80 s->bdsp.clear_blocks(s->block[0]);
82 s->dest[0] = s->current_picture.f->data[0] +
83 s->mb_y * 16 * s->linesize +
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);
93 av_log(s->avctx, AV_LOG_DEBUG,
94 "Interlaced error concealment is not fully implemented\n");
95 ff_mpv_reconstruct_mb(s, s->block);
98 int ff_mpeg_er_init(MpegEncContext *s)
100 ERContext *er = &s->er;
101 int mb_array_size = s->mb_height * s->mb_stride;
104 er->avctx = s->avctx;
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;
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)
118 er->mbskip_table = s->mbskip_table;
119 er->mbintra_table = s->mbintra_table;
121 for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
122 er->dc_val[i] = s->dc_val[i];
124 er->decode_mb = mpeg_er_decode_mb;
129 av_freep(&er->er_temp_buffer);
130 av_freep(&er->error_status_table);
131 return AVERROR(ENOMEM);