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 23static 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 46void ff_mpeg_er_frame_start(MpegEncContext *s) 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 59 ff_er_frame_start(er); 60} 61 62static 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 77 ff_init_block_index(s); 78 ff_update_block_index(s); 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 100int ff_mpeg_er_init(MpegEncContext *s) 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]; 125 126 er->decode_mb = mpeg_er_decode_mb; 127 er->opaque = s; 128 129 return 0; 130fail: 131 av_freep(&er->er_temp_buffer); 132 av_freep(&er->error_status_table); 133 return AVERROR(ENOMEM); 134} 135