av_cold int MPV_common_init(MpegEncContext *s) { int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y, threads; if(s->codec_id == CODEC_ID_MPEG2VIDEO && !s->progressive_sequence) s->mb_height = (s->height + 31) / 32 * 2; else if (s->codec_id != CODEC_ID_H264) s->mb_height = (s->height + 15) / 16; if(s->avctx->pix_fmt == PIX_FMT_NONE){ av_log(s->avctx, AV_LOG_ERROR, "decoding to PIX_FMT_NONE is not supported.\n"); return -1; } if((s->encoding || (s->avctx->active_thread_type & FF_THREAD_SLICE)) && (s->avctx->thread_count > MAX_THREADS || (s->avctx->thread_count > s->mb_height && s->mb_height))){ av_log(s->avctx, AV_LOG_ERROR, "too many threads\n"); return -1; } if((s->width || s->height) && av_image_check_size(s->width, s->height, 0, s->avctx)) return -1; dsputil_init(&s->dsp, s->avctx); ff_dct_common_init(s); s->flags= s->avctx->flags; s->flags2= s->avctx->flags2; if (s->width && s->height) { s->mb_width = (s->width + 15) / 16; s->mb_stride = s->mb_width + 1; s->b8_stride = s->mb_width*2 + 1; s->b4_stride = s->mb_width*4 + 1; mb_array_size= s->mb_height * s->mb_stride; mv_table_size= (s->mb_height+2) * s->mb_stride + 1; /* set chroma shifts */ avcodec_get_chroma_sub_sample(s->avctx->pix_fmt,&(s->chroma_x_shift), &(s->chroma_y_shift) ); /* set default edge pos, will be overriden in decode_header if needed */ s->h_edge_pos= s->mb_width*16; s->v_edge_pos= s->mb_height*16; s->mb_num = s->mb_width * s->mb_height; s->block_wrap[0]= s->block_wrap[1]= s->block_wrap[2]= s->block_wrap[3]= s->b8_stride; s->block_wrap[4]= s->block_wrap[5]= s->mb_stride; y_size = s->b8_stride * (2 * s->mb_height + 1); c_size = s->mb_stride * (s->mb_height + 1); yc_size = y_size + 2 * c_size; /* convert fourcc to upper case */ s->codec_tag = ff_toupper4(s->avctx->codec_tag); s->stream_codec_tag = ff_toupper4(s->avctx->stream_codec_tag); s->avctx->coded_frame= (AVFrame*)&s->current_picture; FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num+1)*sizeof(int), fail) //error ressilience code looks cleaner with this for(y=0; y<s->mb_height; y++){ for(x=0; x<s->mb_width; x++){ s->mb_index2xy[ x + y*s->mb_width ] = x + y*s->mb_stride; } } s->mb_index2xy[ s->mb_height*s->mb_width ] = (s->mb_height-1)*s->mb_stride + s->mb_width; //FIXME really needed? if (s->encoding) { /* Allocate MV tables */ FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base , mv_table_size * 2 * sizeof(int16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base , mv_table_size * 2 * sizeof(int16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base , mv_table_size * 2 * sizeof(int16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base , mv_table_size * 2 * sizeof(int16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base , mv_table_size * 2 * sizeof(int16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base , mv_table_size * 2 * sizeof(int16_t), fail) s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1; s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1; s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1; s->b_bidir_forw_mv_table= s->b_bidir_forw_mv_table_base + s->mb_stride + 1; s->b_bidir_back_mv_table= s->b_bidir_back_mv_table_base + s->mb_stride + 1; s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1; if(s->msmpeg4_version){ FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_stats, 2*2*(MAX_LEVEL+1)*(MAX_RUN+1)*2*sizeof(int), fail); } FF_ALLOCZ_OR_GOTO(s->avctx, s->avctx->stats_out, 256, fail); /* Allocate MB type table */ FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type , mb_array_size * sizeof(uint16_t), fail) //needed for encoding FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->q_intra_matrix , 64*32 * sizeof(int), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->q_inter_matrix , 64*32 * sizeof(int), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->q_intra_matrix16, 64*32*2 * sizeof(uint16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->q_inter_matrix16, 64*32*2 * sizeof(uint16_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->input_picture, MAX_PICTURE_COUNT * sizeof(Picture*), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->reordered_input_picture, MAX_PICTURE_COUNT * sizeof(Picture*), fail) if(s->avctx->noise_reduction){ FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_offset, 2 * 64 * sizeof(uint16_t), fail) } } } s->picture_count = MAX_PICTURE_COUNT * FFMAX(1, s->avctx->thread_count); FF_ALLOCZ_OR_GOTO(s->avctx, s->picture, s->picture_count * sizeof(Picture), fail) for(i = 0; i < s->picture_count; i++) { avcodec_get_frame_defaults((AVFrame *)&s->picture[i]); } if (s->width && s->height) { FF_ALLOCZ_OR_GOTO(s->avctx, s->error_status_table, mb_array_size*sizeof(uint8_t), fail) if(s->codec_id==CODEC_ID_MPEG4 || (s->flags & CODEC_FLAG_INTERLACED_ME)){ /* interlaced direct mode decoding tables */ for(i=0; i<2; i++){ int j, k; for(j=0; j<2; j++){ for(k=0; k<2; k++){ FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_mv_table_base[i][j][k], mv_table_size * 2 * sizeof(int16_t), fail) s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] + s->mb_stride + 1; } FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail) s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j]+ s->mb_stride + 1; } FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail) } } if (s->out_format == FMT_H263) { /* cbp values */ FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size, fail); s->coded_block= s->coded_block_base + s->b8_stride + 1; /* cbp, ac_pred, pred_dir */ FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table , mb_array_size * sizeof(uint8_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail) } if (s->h263_pred || s->h263_plus || !s->encoding) { /* dc values */ //MN: we need these for error resilience of intra-frames FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail); s->dc_val[0] = s->dc_val_base + s->b8_stride + 1; s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1; s->dc_val[2] = s->dc_val[1] + c_size; for(i=0;i<yc_size;i++) s->dc_val_base[i] = 1024; } /* which mb is a intra block */ FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail); memset(s->mbintra_table, 1, mb_array_size); /* init macroblock skip table */ FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size+2, fail); //Note the +1 is for a quicker mpeg4 slice_end detection FF_ALLOCZ_OR_GOTO(s->avctx, s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE, fail); s->parse_context.state= -1; if((s->avctx->debug&(FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) || (s->avctx->debug_mv)){ s->visualization_buffer[0] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH); s->visualization_buffer[1] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH); s->visualization_buffer[2] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH); } } s->context_initialized = 1; s->thread_context[0]= s; if (s->width && s->height) { if (s->encoding || (HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_SLICE)) { threads = s->avctx->thread_count; for(i=1; i<threads; i++){ s->thread_context[i]= av_malloc(sizeof(MpegEncContext)); memcpy(s->thread_context[i], s, sizeof(MpegEncContext)); } for(i=0; i<threads; i++){ if(init_duplicate_context(s->thread_context[i], s) < 0) goto fail; s->thread_context[i]->start_mb_y= (s->mb_height*(i ) + s->avctx->thread_count/2) / s->avctx->thread_count; s->thread_context[i]->end_mb_y = (s->mb_height*(i+1) + s->avctx->thread_count/2) / s->avctx->thread_count; } } else { if(init_duplicate_context(s, s) < 0) goto fail; s->start_mb_y = 0; s->end_mb_y = s->mb_height; } } return 0; fail: MPV_common_end(s); return -1; }