yading@10: /* yading@10: * RV40 decoder yading@10: * Copyright (c) 2007 Konstantin Shishkov yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: /** yading@10: * @file yading@10: * RV40 decoder yading@10: */ yading@10: yading@10: #include "libavutil/imgutils.h" yading@10: yading@10: #include "avcodec.h" yading@10: #include "mpegvideo.h" yading@10: #include "golomb.h" yading@10: yading@10: #include "rv34.h" yading@10: #include "rv40vlc2.h" yading@10: #include "rv40data.h" yading@10: yading@10: static VLC aic_top_vlc; yading@10: static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM]; yading@10: static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS]; yading@10: yading@10: static const int16_t mode2_offs[] = { yading@10: 0, 614, 1222, 1794, 2410, 3014, 3586, 4202, 4792, 5382, 5966, 6542, yading@10: 7138, 7716, 8292, 8864, 9444, 10030, 10642, 11212, 11814 yading@10: }; yading@10: yading@10: /** yading@10: * Initialize all tables. yading@10: */ yading@10: static av_cold void rv40_init_tables(void) yading@10: { yading@10: int i; yading@10: static VLC_TYPE aic_table[1 << AIC_TOP_BITS][2]; yading@10: static VLC_TYPE aic_mode1_table[AIC_MODE1_NUM << AIC_MODE1_BITS][2]; yading@10: static VLC_TYPE aic_mode2_table[11814][2]; yading@10: static VLC_TYPE ptype_table[NUM_PTYPE_VLCS << PTYPE_VLC_BITS][2]; yading@10: static VLC_TYPE btype_table[NUM_BTYPE_VLCS << BTYPE_VLC_BITS][2]; yading@10: yading@10: aic_top_vlc.table = aic_table; yading@10: aic_top_vlc.table_allocated = 1 << AIC_TOP_BITS; yading@10: init_vlc(&aic_top_vlc, AIC_TOP_BITS, AIC_TOP_SIZE, yading@10: rv40_aic_top_vlc_bits, 1, 1, yading@10: rv40_aic_top_vlc_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); yading@10: for(i = 0; i < AIC_MODE1_NUM; i++){ yading@10: // Every tenth VLC table is empty yading@10: if((i % 10) == 9) continue; yading@10: aic_mode1_vlc[i].table = &aic_mode1_table[i << AIC_MODE1_BITS]; yading@10: aic_mode1_vlc[i].table_allocated = 1 << AIC_MODE1_BITS; yading@10: init_vlc(&aic_mode1_vlc[i], AIC_MODE1_BITS, AIC_MODE1_SIZE, yading@10: aic_mode1_vlc_bits[i], 1, 1, yading@10: aic_mode1_vlc_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); yading@10: } yading@10: for(i = 0; i < AIC_MODE2_NUM; i++){ yading@10: aic_mode2_vlc[i].table = &aic_mode2_table[mode2_offs[i]]; yading@10: aic_mode2_vlc[i].table_allocated = mode2_offs[i + 1] - mode2_offs[i]; yading@10: init_vlc(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE, yading@10: aic_mode2_vlc_bits[i], 1, 1, yading@10: aic_mode2_vlc_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); yading@10: } yading@10: for(i = 0; i < NUM_PTYPE_VLCS; i++){ yading@10: ptype_vlc[i].table = &ptype_table[i << PTYPE_VLC_BITS]; yading@10: ptype_vlc[i].table_allocated = 1 << PTYPE_VLC_BITS; yading@10: ff_init_vlc_sparse(&ptype_vlc[i], PTYPE_VLC_BITS, PTYPE_VLC_SIZE, yading@10: ptype_vlc_bits[i], 1, 1, yading@10: ptype_vlc_codes[i], 1, 1, yading@10: ptype_vlc_syms, 1, 1, INIT_VLC_USE_NEW_STATIC); yading@10: } yading@10: for(i = 0; i < NUM_BTYPE_VLCS; i++){ yading@10: btype_vlc[i].table = &btype_table[i << BTYPE_VLC_BITS]; yading@10: btype_vlc[i].table_allocated = 1 << BTYPE_VLC_BITS; yading@10: ff_init_vlc_sparse(&btype_vlc[i], BTYPE_VLC_BITS, BTYPE_VLC_SIZE, yading@10: btype_vlc_bits[i], 1, 1, yading@10: btype_vlc_codes[i], 1, 1, yading@10: btype_vlc_syms, 1, 1, INIT_VLC_USE_NEW_STATIC); yading@10: } yading@10: } yading@10: yading@10: /** yading@10: * Get stored dimension from bitstream. yading@10: * yading@10: * If the width/height is the standard one then it's coded as a 3-bit index. yading@10: * Otherwise it is coded as escaped 8-bit portions. yading@10: */ yading@10: static int get_dimension(GetBitContext *gb, const int *dim) yading@10: { yading@10: int t = get_bits(gb, 3); yading@10: int val = dim[t]; yading@10: if(val < 0) yading@10: val = dim[get_bits1(gb) - val]; yading@10: if(!val){ yading@10: do{ yading@10: t = get_bits(gb, 8); yading@10: val += t << 2; yading@10: }while(t == 0xFF); yading@10: } yading@10: return val; yading@10: } yading@10: yading@10: /** yading@10: * Get encoded picture size - usually this is called from rv40_parse_slice_header. yading@10: */ yading@10: static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h) yading@10: { yading@10: *w = get_dimension(gb, rv40_standard_widths); yading@10: *h = get_dimension(gb, rv40_standard_heights); yading@10: } yading@10: yading@10: static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si) yading@10: { yading@10: int mb_bits; yading@10: int w = r->s.width, h = r->s.height; yading@10: int mb_size; yading@10: yading@10: memset(si, 0, sizeof(SliceInfo)); yading@10: if(get_bits1(gb)) yading@10: return -1; yading@10: si->type = get_bits(gb, 2); yading@10: if(si->type == 1) si->type = 0; yading@10: si->quant = get_bits(gb, 5); yading@10: if(get_bits(gb, 2)) yading@10: return -1; yading@10: si->vlc_set = get_bits(gb, 2); yading@10: skip_bits1(gb); yading@10: si->pts = get_bits(gb, 13); yading@10: if(!si->type || !get_bits1(gb)) yading@10: rv40_parse_picture_size(gb, &w, &h); yading@10: if(av_image_check_size(w, h, 0, r->s.avctx) < 0) yading@10: return -1; yading@10: si->width = w; yading@10: si->height = h; yading@10: mb_size = ((w + 15) >> 4) * ((h + 15) >> 4); yading@10: mb_bits = ff_rv34_get_start_offset(gb, mb_size); yading@10: si->start = get_bits(gb, mb_bits); yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: /** yading@10: * Decode 4x4 intra types array. yading@10: */ yading@10: static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst) yading@10: { yading@10: MpegEncContext *s = &r->s; yading@10: int i, j, k, v; yading@10: int A, B, C; yading@10: int pattern; yading@10: int8_t *ptr; yading@10: yading@10: for(i = 0; i < 4; i++, dst += r->intra_types_stride){ yading@10: if(!i && s->first_slice_line){ yading@10: pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1); yading@10: dst[0] = (pattern >> 2) & 2; yading@10: dst[1] = (pattern >> 1) & 2; yading@10: dst[2] = pattern & 2; yading@10: dst[3] = (pattern << 1) & 2; yading@10: continue; yading@10: } yading@10: ptr = dst; yading@10: for(j = 0; j < 4; j++){ yading@10: /* Coefficients are read using VLC chosen by the prediction pattern yading@10: * The first one (used for retrieving a pair of coefficients) is yading@10: * constructed from the top, top right and left coefficients yading@10: * The second one (used for retrieving only one coefficient) is yading@10: * top + 10 * left. yading@10: */ yading@10: A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row yading@10: B = ptr[-r->intra_types_stride]; yading@10: C = ptr[-1]; yading@10: pattern = A + (B << 4) + (C << 8); yading@10: for(k = 0; k < MODE2_PATTERNS_NUM; k++) yading@10: if(pattern == rv40_aic_table_index[k]) yading@10: break; yading@10: if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients yading@10: v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2); yading@10: *ptr++ = v/9; yading@10: *ptr++ = v%9; yading@10: j++; yading@10: }else{ yading@10: if(B != -1 && C != -1) yading@10: v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1); yading@10: else{ // tricky decoding yading@10: v = 0; yading@10: switch(C){ yading@10: case -1: // code 0 -> 1, 1 -> 0 yading@10: if(B < 2) yading@10: v = get_bits1(gb) ^ 1; yading@10: break; yading@10: case 0: yading@10: case 2: // code 0 -> 2, 1 -> 0 yading@10: v = (get_bits1(gb) ^ 1) << 1; yading@10: break; yading@10: } yading@10: } yading@10: *ptr++ = v; yading@10: } yading@10: } yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: /** yading@10: * Decode macroblock information. yading@10: */ yading@10: static int rv40_decode_mb_info(RV34DecContext *r) yading@10: { yading@10: MpegEncContext *s = &r->s; yading@10: GetBitContext *gb = &s->gb; yading@10: int q, i; yading@10: int prev_type = 0; yading@10: int mb_pos = s->mb_x + s->mb_y * s->mb_stride; yading@10: yading@10: if(!r->s.mb_skip_run) { yading@10: r->s.mb_skip_run = svq3_get_ue_golomb(gb) + 1; yading@10: if(r->s.mb_skip_run > (unsigned)s->mb_num) yading@10: return -1; yading@10: } yading@10: yading@10: if(--r->s.mb_skip_run) yading@10: return RV34_MB_SKIP; yading@10: yading@10: if(r->avail_cache[6-4]){ yading@10: int blocks[RV34_MB_TYPES] = {0}; yading@10: int count = 0; yading@10: if(r->avail_cache[6-1]) yading@10: blocks[r->mb_type[mb_pos - 1]]++; yading@10: blocks[r->mb_type[mb_pos - s->mb_stride]]++; yading@10: if(r->avail_cache[6-2]) yading@10: blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++; yading@10: if(r->avail_cache[6-5]) yading@10: blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++; yading@10: for(i = 0; i < RV34_MB_TYPES; i++){ yading@10: if(blocks[i] > count){ yading@10: count = blocks[i]; yading@10: prev_type = i; yading@10: if(count>1) yading@10: break; yading@10: } yading@10: } yading@10: } else if (r->avail_cache[6-1]) yading@10: prev_type = r->mb_type[mb_pos - 1]; yading@10: yading@10: if(s->pict_type == AV_PICTURE_TYPE_P){ yading@10: prev_type = block_num_to_ptype_vlc_num[prev_type]; yading@10: q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1); yading@10: if(q < PBTYPE_ESCAPE) yading@10: return q; yading@10: q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1); yading@10: av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n"); yading@10: }else{ yading@10: prev_type = block_num_to_btype_vlc_num[prev_type]; yading@10: q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1); yading@10: if(q < PBTYPE_ESCAPE) yading@10: return q; yading@10: q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1); yading@10: av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n"); yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: enum RV40BlockPos{ yading@10: POS_CUR, yading@10: POS_TOP, yading@10: POS_LEFT, yading@10: POS_BOTTOM, yading@10: }; yading@10: yading@10: #define MASK_CUR 0x0001 yading@10: #define MASK_RIGHT 0x0008 yading@10: #define MASK_BOTTOM 0x0010 yading@10: #define MASK_TOP 0x1000 yading@10: #define MASK_Y_TOP_ROW 0x000F yading@10: #define MASK_Y_LAST_ROW 0xF000 yading@10: #define MASK_Y_LEFT_COL 0x1111 yading@10: #define MASK_Y_RIGHT_COL 0x8888 yading@10: #define MASK_C_TOP_ROW 0x0003 yading@10: #define MASK_C_LAST_ROW 0x000C yading@10: #define MASK_C_LEFT_COL 0x0005 yading@10: #define MASK_C_RIGHT_COL 0x000A yading@10: yading@10: static const int neighbour_offs_x[4] = { 0, 0, -1, 0 }; yading@10: static const int neighbour_offs_y[4] = { 0, -1, 0, 1 }; yading@10: yading@10: static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp, yading@10: uint8_t *src, int stride, int dmode, yading@10: int lim_q1, int lim_p1, yading@10: int alpha, int beta, int beta2, yading@10: int chroma, int edge, int dir) yading@10: { yading@10: int filter_p1, filter_q1; yading@10: int strong; yading@10: int lims; yading@10: yading@10: strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2, yading@10: edge, &filter_p1, &filter_q1); yading@10: yading@10: lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1; yading@10: yading@10: if (strong) { yading@10: rdsp->rv40_strong_loop_filter[dir](src, stride, alpha, yading@10: lims, dmode, chroma); yading@10: } else if (filter_p1 & filter_q1) { yading@10: rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta, yading@10: lims, lim_q1, lim_p1); yading@10: } else if (filter_p1 | filter_q1) { yading@10: rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1, yading@10: alpha, beta, lims >> 1, lim_q1 >> 1, yading@10: lim_p1 >> 1); yading@10: } yading@10: } yading@10: yading@10: /** yading@10: * RV40 loop filtering function yading@10: */ yading@10: static void rv40_loop_filter(RV34DecContext *r, int row) yading@10: { yading@10: MpegEncContext *s = &r->s; yading@10: int mb_pos, mb_x; yading@10: int i, j, k; yading@10: uint8_t *Y, *C; yading@10: int alpha, beta, betaY, betaC; yading@10: int q; yading@10: int mbtype[4]; ///< current macroblock and its neighbours types yading@10: /** yading@10: * flags indicating that macroblock can be filtered with strong filter yading@10: * it is set only for intra coded MB and MB with DCs coded separately yading@10: */ yading@10: int mb_strong[4]; yading@10: int clip[4]; ///< MB filter clipping value calculated from filtering strength yading@10: /** yading@10: * coded block patterns for luma part of current macroblock and its neighbours yading@10: * Format: yading@10: * LSB corresponds to the top left block, yading@10: * each nibble represents one row of subblocks. yading@10: */ yading@10: int cbp[4]; yading@10: /** yading@10: * coded block patterns for chroma part of current macroblock and its neighbours yading@10: * Format is the same as for luma with two subblocks in a row. yading@10: */ yading@10: int uvcbp[4][2]; yading@10: /** yading@10: * This mask represents the pattern of luma subblocks that should be filtered yading@10: * in addition to the coded ones because because they lie at the edge of yading@10: * 8x8 block with different enough motion vectors yading@10: */ yading@10: unsigned mvmasks[4]; yading@10: yading@10: mb_pos = row * s->mb_stride; yading@10: for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ yading@10: int mbtype = s->current_picture_ptr->mb_type[mb_pos]; yading@10: if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype)) yading@10: r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF; yading@10: if(IS_INTRA(mbtype)) yading@10: r->cbp_chroma[mb_pos] = 0xFF; yading@10: } yading@10: mb_pos = row * s->mb_stride; yading@10: for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ yading@10: int y_h_deblock, y_v_deblock; yading@10: int c_v_deblock[2], c_h_deblock[2]; yading@10: int clip_left; yading@10: int avail[4]; yading@10: unsigned y_to_deblock; yading@10: int c_to_deblock[2]; yading@10: yading@10: q = s->current_picture_ptr->qscale_table[mb_pos]; yading@10: alpha = rv40_alpha_tab[q]; yading@10: beta = rv40_beta_tab [q]; yading@10: betaY = betaC = beta * 3; yading@10: if(s->width * s->height <= 176*144) yading@10: betaY += beta; yading@10: yading@10: avail[0] = 1; yading@10: avail[1] = row; yading@10: avail[2] = mb_x; yading@10: avail[3] = row < s->mb_height - 1; yading@10: for(i = 0; i < 4; i++){ yading@10: if(avail[i]){ yading@10: int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride; yading@10: mvmasks[i] = r->deblock_coefs[pos]; yading@10: mbtype [i] = s->current_picture_ptr->mb_type[pos]; yading@10: cbp [i] = r->cbp_luma[pos]; yading@10: uvcbp[i][0] = r->cbp_chroma[pos] & 0xF; yading@10: uvcbp[i][1] = r->cbp_chroma[pos] >> 4; yading@10: }else{ yading@10: mvmasks[i] = 0; yading@10: mbtype [i] = mbtype[0]; yading@10: cbp [i] = 0; yading@10: uvcbp[i][0] = uvcbp[i][1] = 0; yading@10: } yading@10: mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]); yading@10: clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q]; yading@10: } yading@10: y_to_deblock = mvmasks[POS_CUR] yading@10: | (mvmasks[POS_BOTTOM] << 16); yading@10: /* This pattern contains bits signalling that horizontal edges of yading@10: * the current block can be filtered. yading@10: * That happens when either of adjacent subblocks is coded or lies on yading@10: * the edge of 8x8 blocks with motion vectors differing by more than yading@10: * 3/4 pel in any component (any edge orientation for some reason). yading@10: */ yading@10: y_h_deblock = y_to_deblock yading@10: | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW) yading@10: | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12); yading@10: /* This pattern contains bits signalling that vertical edges of yading@10: * the current block can be filtered. yading@10: * That happens when either of adjacent subblocks is coded or lies on yading@10: * the edge of 8x8 blocks with motion vectors differing by more than yading@10: * 3/4 pel in any component (any edge orientation for some reason). yading@10: */ yading@10: y_v_deblock = y_to_deblock yading@10: | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL) yading@10: | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3); yading@10: if(!mb_x) yading@10: y_v_deblock &= ~MASK_Y_LEFT_COL; yading@10: if(!row) yading@10: y_h_deblock &= ~MASK_Y_TOP_ROW; yading@10: if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM])) yading@10: y_h_deblock &= ~(MASK_Y_TOP_ROW << 16); yading@10: /* Calculating chroma patterns is similar and easier since there is yading@10: * no motion vector pattern for them. yading@10: */ yading@10: for(i = 0; i < 2; i++){ yading@10: c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i]; yading@10: c_v_deblock[i] = c_to_deblock[i] yading@10: | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL) yading@10: | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1); yading@10: c_h_deblock[i] = c_to_deblock[i] yading@10: | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2) yading@10: | (uvcbp[POS_CUR][i] << 2); yading@10: if(!mb_x) yading@10: c_v_deblock[i] &= ~MASK_C_LEFT_COL; yading@10: if(!row) yading@10: c_h_deblock[i] &= ~MASK_C_TOP_ROW; yading@10: if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM])) yading@10: c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4); yading@10: } yading@10: yading@10: for(j = 0; j < 16; j += 4){ yading@10: Y = s->current_picture_ptr->f.data[0] + mb_x*16 + (row*16 + j) * s->linesize; yading@10: for(i = 0; i < 4; i++, Y += 4){ yading@10: int ij = i + j; yading@10: int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0; yading@10: int dither = j ? ij : i*4; yading@10: yading@10: // if bottom block is coded then we can filter its top edge yading@10: // (or bottom edge of this block, which is the same) yading@10: if(y_h_deblock & (MASK_BOTTOM << ij)){ yading@10: rv40_adaptive_loop_filter(&r->rdsp, Y+4*s->linesize, yading@10: s->linesize, dither, yading@10: y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0, yading@10: clip_cur, alpha, beta, betaY, yading@10: 0, 0, 0); yading@10: } yading@10: // filter left block edge in ordinary mode (with low filtering strength) yading@10: if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){ yading@10: if(!i) yading@10: clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0; yading@10: else yading@10: clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0; yading@10: rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither, yading@10: clip_cur, yading@10: clip_left, yading@10: alpha, beta, betaY, 0, 0, 1); yading@10: } yading@10: // filter top edge of the current macroblock when filtering strength is high yading@10: if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){ yading@10: rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither, yading@10: clip_cur, yading@10: mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0, yading@10: alpha, beta, betaY, 0, 1, 0); yading@10: } yading@10: // filter left block edge in edge mode (with high filtering strength) yading@10: if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){ yading@10: clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0; yading@10: rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither, yading@10: clip_cur, yading@10: clip_left, yading@10: alpha, beta, betaY, 0, 1, 1); yading@10: } yading@10: } yading@10: } yading@10: for(k = 0; k < 2; k++){ yading@10: for(j = 0; j < 2; j++){ yading@10: C = s->current_picture_ptr->f.data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize; yading@10: for(i = 0; i < 2; i++, C += 4){ yading@10: int ij = i + j*2; yading@10: int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0; yading@10: if(c_h_deblock[k] & (MASK_CUR << (ij+2))){ yading@10: int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0; yading@10: rv40_adaptive_loop_filter(&r->rdsp, C+4*s->uvlinesize, s->uvlinesize, i*8, yading@10: clip_bot, yading@10: clip_cur, yading@10: alpha, beta, betaC, 1, 0, 0); yading@10: } yading@10: if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){ yading@10: if(!i) yading@10: clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0; yading@10: else yading@10: clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0; yading@10: rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8, yading@10: clip_cur, yading@10: clip_left, yading@10: alpha, beta, betaC, 1, 0, 1); yading@10: } yading@10: if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){ yading@10: int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0; yading@10: rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8, yading@10: clip_cur, yading@10: clip_top, yading@10: alpha, beta, betaC, 1, 1, 0); yading@10: } yading@10: if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){ yading@10: clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0; yading@10: rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8, yading@10: clip_cur, yading@10: clip_left, yading@10: alpha, beta, betaC, 1, 1, 1); yading@10: } yading@10: } yading@10: } yading@10: } yading@10: } yading@10: } yading@10: yading@10: /** yading@10: * Initialize decoder. yading@10: */ yading@10: static av_cold int rv40_decode_init(AVCodecContext *avctx) yading@10: { yading@10: RV34DecContext *r = avctx->priv_data; yading@10: yading@10: r->rv30 = 0; yading@10: ff_rv34_decode_init(avctx); yading@10: if(!aic_top_vlc.bits) yading@10: rv40_init_tables(); yading@10: r->parse_slice_header = rv40_parse_slice_header; yading@10: r->decode_intra_types = rv40_decode_intra_types; yading@10: r->decode_mb_info = rv40_decode_mb_info; yading@10: r->loop_filter = rv40_loop_filter; yading@10: r->luma_dc_quant_i = rv40_luma_dc_quant[0]; yading@10: r->luma_dc_quant_p = rv40_luma_dc_quant[1]; yading@10: return 0; yading@10: } yading@10: yading@10: AVCodec ff_rv40_decoder = { yading@10: .name = "rv40", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_RV40, yading@10: .priv_data_size = sizeof(RV34DecContext), yading@10: .init = rv40_decode_init, yading@10: .close = ff_rv34_decode_end, yading@10: .decode = ff_rv34_decode_frame, yading@10: .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | yading@10: CODEC_CAP_FRAME_THREADS, yading@10: .flush = ff_mpeg_flush, yading@10: .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"), yading@10: .pix_fmts = ff_pixfmt_list_420, yading@10: .init_thread_copy = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_init_thread_copy), yading@10: .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context), yading@10: };