diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/cavs.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/cavs.c | 716 |
1 files changed, 0 insertions, 716 deletions
diff --git a/contrib/ffmpeg/libavcodec/cavs.c b/contrib/ffmpeg/libavcodec/cavs.c deleted file mode 100644 index 2867c0679..000000000 --- a/contrib/ffmpeg/libavcodec/cavs.c +++ /dev/null @@ -1,716 +0,0 @@ -/* - * Chinese AVS video (AVS1-P2, JiZhun profile) decoder. - * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file cavs.c - * Chinese AVS video (AVS1-P2, JiZhun profile) decoder - * @author Stefan Gehrer <stefan.gehrer@gmx.de> - */ - -#include "avcodec.h" -#include "bitstream.h" -#include "golomb.h" -#include "cavs.h" -#include "cavsdata.h" - -/***************************************************************************** - * - * in-loop deblocking filter - * - ****************************************************************************/ - -static inline int get_bs(vector_t *mvP, vector_t *mvQ, int b) { - if((mvP->ref == REF_INTRA) || (mvQ->ref == REF_INTRA)) - return 2; - if( (abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4) ) - return 1; - if(b){ - mvP += MV_BWD_OFFS; - mvQ += MV_BWD_OFFS; - if( (abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4) ) - return 1; - }else{ - if(mvP->ref != mvQ->ref) - return 1; - } - return 0; -} - -#define SET_PARAMS \ - alpha = alpha_tab[av_clip(qp_avg + h->alpha_offset,0,63)]; \ - beta = beta_tab[av_clip(qp_avg + h->beta_offset, 0,63)]; \ - tc = tc_tab[av_clip(qp_avg + h->alpha_offset,0,63)]; - -/** - * in-loop deblocking filter for a single macroblock - * - * boundary strength (bs) mapping: - * - * --4---5-- - * 0 2 | - * | 6 | 7 | - * 1 3 | - * --------- - * - */ -void ff_cavs_filter(AVSContext *h, enum mb_t mb_type) { - DECLARE_ALIGNED_8(uint8_t, bs[8]); - int qp_avg, alpha, beta, tc; - int i; - - /* save un-deblocked lines */ - h->topleft_border_y = h->top_border_y[h->mbx*16+15]; - h->topleft_border_u = h->top_border_u[h->mbx*10+8]; - h->topleft_border_v = h->top_border_v[h->mbx*10+8]; - memcpy(&h->top_border_y[h->mbx*16], h->cy + 15* h->l_stride,16); - memcpy(&h->top_border_u[h->mbx*10+1], h->cu + 7* h->c_stride,8); - memcpy(&h->top_border_v[h->mbx*10+1], h->cv + 7* h->c_stride,8); - for(i=0;i<8;i++) { - h->left_border_y[i*2+1] = *(h->cy + 15 + (i*2+0)*h->l_stride); - h->left_border_y[i*2+2] = *(h->cy + 15 + (i*2+1)*h->l_stride); - h->left_border_u[i+1] = *(h->cu + 7 + i*h->c_stride); - h->left_border_v[i+1] = *(h->cv + 7 + i*h->c_stride); - } - if(!h->loop_filter_disable) { - /* determine bs */ - if(mb_type == I_8X8) - *((uint64_t *)bs) = 0x0202020202020202ULL; - else{ - *((uint64_t *)bs) = 0; - if(ff_cavs_partition_flags[mb_type] & SPLITV){ - bs[2] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X1], mb_type > P_8X8); - bs[3] = get_bs(&h->mv[MV_FWD_X2], &h->mv[MV_FWD_X3], mb_type > P_8X8); - } - if(ff_cavs_partition_flags[mb_type] & SPLITH){ - bs[6] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X2], mb_type > P_8X8); - bs[7] = get_bs(&h->mv[MV_FWD_X1], &h->mv[MV_FWD_X3], mb_type > P_8X8); - } - bs[0] = get_bs(&h->mv[MV_FWD_A1], &h->mv[MV_FWD_X0], mb_type > P_8X8); - bs[1] = get_bs(&h->mv[MV_FWD_A3], &h->mv[MV_FWD_X2], mb_type > P_8X8); - bs[4] = get_bs(&h->mv[MV_FWD_B2], &h->mv[MV_FWD_X0], mb_type > P_8X8); - bs[5] = get_bs(&h->mv[MV_FWD_B3], &h->mv[MV_FWD_X1], mb_type > P_8X8); - } - if( *((uint64_t *)bs) ) { - if(h->flags & A_AVAIL) { - qp_avg = (h->qp + h->left_qp + 1) >> 1; - SET_PARAMS; - h->s.dsp.cavs_filter_lv(h->cy,h->l_stride,alpha,beta,tc,bs[0],bs[1]); - h->s.dsp.cavs_filter_cv(h->cu,h->c_stride,alpha,beta,tc,bs[0],bs[1]); - h->s.dsp.cavs_filter_cv(h->cv,h->c_stride,alpha,beta,tc,bs[0],bs[1]); - } - qp_avg = h->qp; - SET_PARAMS; - h->s.dsp.cavs_filter_lv(h->cy + 8,h->l_stride,alpha,beta,tc,bs[2],bs[3]); - h->s.dsp.cavs_filter_lh(h->cy + 8*h->l_stride,h->l_stride,alpha,beta,tc, - bs[6],bs[7]); - - if(h->flags & B_AVAIL) { - qp_avg = (h->qp + h->top_qp[h->mbx] + 1) >> 1; - SET_PARAMS; - h->s.dsp.cavs_filter_lh(h->cy,h->l_stride,alpha,beta,tc,bs[4],bs[5]); - h->s.dsp.cavs_filter_ch(h->cu,h->c_stride,alpha,beta,tc,bs[4],bs[5]); - h->s.dsp.cavs_filter_ch(h->cv,h->c_stride,alpha,beta,tc,bs[4],bs[5]); - } - } - } - h->left_qp = h->qp; - h->top_qp[h->mbx] = h->qp; -} - -#undef SET_PARAMS - -/***************************************************************************** - * - * spatial intra prediction - * - ****************************************************************************/ - -void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, - uint8_t **left, int block) { - int i; - - switch(block) { - case 0: - *left = h->left_border_y; - h->left_border_y[0] = h->left_border_y[1]; - memset(&h->left_border_y[17],h->left_border_y[16],9); - memcpy(&top[1],&h->top_border_y[h->mbx*16],16); - top[17] = top[16]; - top[0] = top[1]; - if((h->flags & A_AVAIL) && (h->flags & B_AVAIL)) - h->left_border_y[0] = top[0] = h->topleft_border_y; - break; - case 1: - *left = h->intern_border_y; - for(i=0;i<8;i++) - h->intern_border_y[i+1] = *(h->cy + 7 + i*h->l_stride); - memset(&h->intern_border_y[9],h->intern_border_y[8],9); - h->intern_border_y[0] = h->intern_border_y[1]; - memcpy(&top[1],&h->top_border_y[h->mbx*16+8],8); - if(h->flags & C_AVAIL) - memcpy(&top[9],&h->top_border_y[(h->mbx + 1)*16],8); - else - memset(&top[9],top[8],9); - top[17] = top[16]; - top[0] = top[1]; - if(h->flags & B_AVAIL) - h->intern_border_y[0] = top[0] = h->top_border_y[h->mbx*16+7]; - break; - case 2: - *left = &h->left_border_y[8]; - memcpy(&top[1],h->cy + 7*h->l_stride,16); - top[17] = top[16]; - top[0] = top[1]; - if(h->flags & A_AVAIL) - top[0] = h->left_border_y[8]; - break; - case 3: - *left = &h->intern_border_y[8]; - for(i=0;i<8;i++) - h->intern_border_y[i+9] = *(h->cy + 7 + (i+8)*h->l_stride); - memset(&h->intern_border_y[17],h->intern_border_y[16],9); - memcpy(&top[0],h->cy + 7 + 7*h->l_stride,9); - memset(&top[9],top[8],9); - break; - } -} - -void ff_cavs_load_intra_pred_chroma(AVSContext *h) { - /* extend borders by one pixel */ - h->left_border_u[9] = h->left_border_u[8]; - h->left_border_v[9] = h->left_border_v[8]; - h->top_border_u[h->mbx*10+9] = h->top_border_u[h->mbx*10+8]; - h->top_border_v[h->mbx*10+9] = h->top_border_v[h->mbx*10+8]; - if(h->mbx && h->mby) { - h->top_border_u[h->mbx*10] = h->left_border_u[0] = h->topleft_border_u; - h->top_border_v[h->mbx*10] = h->left_border_v[0] = h->topleft_border_v; - } else { - h->left_border_u[0] = h->left_border_u[1]; - h->left_border_v[0] = h->left_border_v[1]; - h->top_border_u[h->mbx*10] = h->top_border_u[h->mbx*10+1]; - h->top_border_v[h->mbx*10] = h->top_border_v[h->mbx*10+1]; - } -} - -static void intra_pred_vert(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int y; - uint64_t a = AV_RN64(&top[1]); - for(y=0;y<8;y++) { - *((uint64_t *)(d+y*stride)) = a; - } -} - -static void intra_pred_horiz(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int y; - uint64_t a; - for(y=0;y<8;y++) { - a = left[y+1] * 0x0101010101010101ULL; - *((uint64_t *)(d+y*stride)) = a; - } -} - -static void intra_pred_dc_128(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int y; - uint64_t a = 0x8080808080808080ULL; - for(y=0;y<8;y++) - *((uint64_t *)(d+y*stride)) = a; -} - -static void intra_pred_plane(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int x,y,ia; - int ih = 0; - int iv = 0; - uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; - - for(x=0; x<4; x++) { - ih += (x+1)*(top[5+x]-top[3-x]); - iv += (x+1)*(left[5+x]-left[3-x]); - } - ia = (top[8]+left[8])<<4; - ih = (17*ih+16)>>5; - iv = (17*iv+16)>>5; - for(y=0; y<8; y++) - for(x=0; x<8; x++) - d[y*stride+x] = cm[(ia+(x-3)*ih+(y-3)*iv+16)>>5]; -} - -#define LOWPASS(ARRAY,INDEX) \ - (( ARRAY[(INDEX)-1] + 2*ARRAY[(INDEX)] + ARRAY[(INDEX)+1] + 2) >> 2) - -static void intra_pred_lp(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int x,y; - for(y=0; y<8; y++) - for(x=0; x<8; x++) - d[y*stride+x] = (LOWPASS(top,x+1) + LOWPASS(left,y+1)) >> 1; -} - -static void intra_pred_down_left(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int x,y; - for(y=0; y<8; y++) - for(x=0; x<8; x++) - d[y*stride+x] = (LOWPASS(top,x+y+2) + LOWPASS(left,x+y+2)) >> 1; -} - -static void intra_pred_down_right(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int x,y; - for(y=0; y<8; y++) - for(x=0; x<8; x++) - if(x==y) - d[y*stride+x] = (left[1]+2*top[0]+top[1]+2)>>2; - else if(x>y) - d[y*stride+x] = LOWPASS(top,x-y); - else - d[y*stride+x] = LOWPASS(left,y-x); -} - -static void intra_pred_lp_left(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int x,y; - for(y=0; y<8; y++) - for(x=0; x<8; x++) - d[y*stride+x] = LOWPASS(left,y+1); -} - -static void intra_pred_lp_top(uint8_t *d,uint8_t *top,uint8_t *left,int stride) { - int x,y; - for(y=0; y<8; y++) - for(x=0; x<8; x++) - d[y*stride+x] = LOWPASS(top,x+1); -} - -#undef LOWPASS - -void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv) { - /* save pred modes before they get modified */ - h->pred_mode_Y[3] = h->pred_mode_Y[5]; - h->pred_mode_Y[6] = h->pred_mode_Y[8]; - h->top_pred_Y[h->mbx*2+0] = h->pred_mode_Y[7]; - h->top_pred_Y[h->mbx*2+1] = h->pred_mode_Y[8]; - - /* modify pred modes according to availability of neighbour samples */ - if(!(h->flags & A_AVAIL)) { - modify_pred(ff_left_modifier_l, &h->pred_mode_Y[4] ); - modify_pred(ff_left_modifier_l, &h->pred_mode_Y[7] ); - modify_pred(ff_left_modifier_c, pred_mode_uv ); - } - if(!(h->flags & B_AVAIL)) { - modify_pred(ff_top_modifier_l, &h->pred_mode_Y[4] ); - modify_pred(ff_top_modifier_l, &h->pred_mode_Y[5] ); - modify_pred(ff_top_modifier_c, pred_mode_uv ); - } -} - -/***************************************************************************** - * - * motion compensation - * - ****************************************************************************/ - -static inline void mc_dir_part(AVSContext *h,Picture *pic,int square, - int chroma_height,int delta,int list,uint8_t *dest_y, - uint8_t *dest_cb,uint8_t *dest_cr,int src_x_offset, - int src_y_offset,qpel_mc_func *qpix_op, - h264_chroma_mc_func chroma_op,vector_t *mv){ - MpegEncContext * const s = &h->s; - const int mx= mv->x + src_x_offset*8; - const int my= mv->y + src_y_offset*8; - const int luma_xy= (mx&3) + ((my&3)<<2); - uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->l_stride; - uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->c_stride; - uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->c_stride; - int extra_width= 0; //(s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; - int extra_height= extra_width; - int emu=0; - const int full_mx= mx>>2; - const int full_my= my>>2; - const int pic_width = 16*h->mb_width; - const int pic_height = 16*h->mb_height; - - if(!pic->data[0]) - return; - if(mx&7) extra_width -= 3; - if(my&7) extra_height -= 3; - - if( full_mx < 0-extra_width - || full_my < 0-extra_height - || full_mx + 16/*FIXME*/ > pic_width + extra_width - || full_my + 16/*FIXME*/ > pic_height + extra_height){ - ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->l_stride, h->l_stride, - 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height); - src_y= s->edge_emu_buffer + 2 + 2*h->l_stride; - emu=1; - } - - qpix_op[luma_xy](dest_y, src_y, h->l_stride); //FIXME try variable height perhaps? - if(!square){ - qpix_op[luma_xy](dest_y + delta, src_y + delta, h->l_stride); - } - - if(emu){ - ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->c_stride, - 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1); - src_cb= s->edge_emu_buffer; - } - chroma_op(dest_cb, src_cb, h->c_stride, chroma_height, mx&7, my&7); - - if(emu){ - ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->c_stride, - 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1); - src_cr= s->edge_emu_buffer; - } - chroma_op(dest_cr, src_cr, h->c_stride, chroma_height, mx&7, my&7); -} - -static inline void mc_part_std(AVSContext *h,int square,int chroma_height,int delta, - uint8_t *dest_y,uint8_t *dest_cb,uint8_t *dest_cr, - int x_offset, int y_offset,qpel_mc_func *qpix_put, - h264_chroma_mc_func chroma_put,qpel_mc_func *qpix_avg, - h264_chroma_mc_func chroma_avg, vector_t *mv){ - qpel_mc_func *qpix_op= qpix_put; - h264_chroma_mc_func chroma_op= chroma_put; - - dest_y += 2*x_offset + 2*y_offset*h->l_stride; - dest_cb += x_offset + y_offset*h->c_stride; - dest_cr += x_offset + y_offset*h->c_stride; - x_offset += 8*h->mbx; - y_offset += 8*h->mby; - - if(mv->ref >= 0){ - Picture *ref= &h->DPB[mv->ref]; - mc_dir_part(h, ref, square, chroma_height, delta, 0, - dest_y, dest_cb, dest_cr, x_offset, y_offset, - qpix_op, chroma_op, mv); - - qpix_op= qpix_avg; - chroma_op= chroma_avg; - } - - if((mv+MV_BWD_OFFS)->ref >= 0){ - Picture *ref= &h->DPB[0]; - mc_dir_part(h, ref, square, chroma_height, delta, 1, - dest_y, dest_cb, dest_cr, x_offset, y_offset, - qpix_op, chroma_op, mv+MV_BWD_OFFS); - } -} - -void ff_cavs_inter(AVSContext *h, enum mb_t mb_type) { - if(ff_cavs_partition_flags[mb_type] == 0){ // 16x16 - mc_part_std(h, 1, 8, 0, h->cy, h->cu, h->cv, 0, 0, - h->s.dsp.put_cavs_qpel_pixels_tab[0], - h->s.dsp.put_h264_chroma_pixels_tab[0], - h->s.dsp.avg_cavs_qpel_pixels_tab[0], - h->s.dsp.avg_h264_chroma_pixels_tab[0],&h->mv[MV_FWD_X0]); - }else{ - mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 0, 0, - h->s.dsp.put_cavs_qpel_pixels_tab[1], - h->s.dsp.put_h264_chroma_pixels_tab[1], - h->s.dsp.avg_cavs_qpel_pixels_tab[1], - h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X0]); - mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 4, 0, - h->s.dsp.put_cavs_qpel_pixels_tab[1], - h->s.dsp.put_h264_chroma_pixels_tab[1], - h->s.dsp.avg_cavs_qpel_pixels_tab[1], - h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X1]); - mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 0, 4, - h->s.dsp.put_cavs_qpel_pixels_tab[1], - h->s.dsp.put_h264_chroma_pixels_tab[1], - h->s.dsp.avg_cavs_qpel_pixels_tab[1], - h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X2]); - mc_part_std(h, 1, 4, 0, h->cy, h->cu, h->cv, 4, 4, - h->s.dsp.put_cavs_qpel_pixels_tab[1], - h->s.dsp.put_h264_chroma_pixels_tab[1], - h->s.dsp.avg_cavs_qpel_pixels_tab[1], - h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X3]); - } -} - -/***************************************************************************** - * - * motion vector prediction - * - ****************************************************************************/ - -static inline void scale_mv(AVSContext *h, int *d_x, int *d_y, vector_t *src, int distp) { - int den = h->scale_den[src->ref]; - - *d_x = (src->x*distp*den + 256 + (src->x>>31)) >> 9; - *d_y = (src->y*distp*den + 256 + (src->y>>31)) >> 9; -} - -static inline void mv_pred_median(AVSContext *h, vector_t *mvP, vector_t *mvA, vector_t *mvB, vector_t *mvC) { - int ax, ay, bx, by, cx, cy; - int len_ab, len_bc, len_ca, len_mid; - - /* scale candidates according to their temporal span */ - scale_mv(h, &ax, &ay, mvA, mvP->dist); - scale_mv(h, &bx, &by, mvB, mvP->dist); - scale_mv(h, &cx, &cy, mvC, mvP->dist); - /* find the geometrical median of the three candidates */ - len_ab = abs(ax - bx) + abs(ay - by); - len_bc = abs(bx - cx) + abs(by - cy); - len_ca = abs(cx - ax) + abs(cy - ay); - len_mid = mid_pred(len_ab, len_bc, len_ca); - if(len_mid == len_ab) { - mvP->x = cx; - mvP->y = cy; - } else if(len_mid == len_bc) { - mvP->x = ax; - mvP->y = ay; - } else { - mvP->x = bx; - mvP->y = by; - } -} - -void ff_cavs_mv(AVSContext *h, enum mv_loc_t nP, enum mv_loc_t nC, - enum mv_pred_t mode, enum block_t size, int ref) { - vector_t *mvP = &h->mv[nP]; - vector_t *mvA = &h->mv[nP-1]; - vector_t *mvB = &h->mv[nP-4]; - vector_t *mvC = &h->mv[nC]; - const vector_t *mvP2 = NULL; - - mvP->ref = ref; - mvP->dist = h->dist[mvP->ref]; - if(mvC->ref == NOT_AVAIL) - mvC = &h->mv[nP-5]; // set to top-left (mvD) - if((mode == MV_PRED_PSKIP) && - ((mvA->ref == NOT_AVAIL) || (mvB->ref == NOT_AVAIL) || - ((mvA->x | mvA->y | mvA->ref) == 0) || - ((mvB->x | mvB->y | mvB->ref) == 0) )) { - mvP2 = &ff_cavs_un_mv; - /* if there is only one suitable candidate, take it */ - } else if((mvA->ref >= 0) && (mvB->ref < 0) && (mvC->ref < 0)) { - mvP2= mvA; - } else if((mvA->ref < 0) && (mvB->ref >= 0) && (mvC->ref < 0)) { - mvP2= mvB; - } else if((mvA->ref < 0) && (mvB->ref < 0) && (mvC->ref >= 0)) { - mvP2= mvC; - } else if(mode == MV_PRED_LEFT && mvA->ref == ref){ - mvP2= mvA; - } else if(mode == MV_PRED_TOP && mvB->ref == ref){ - mvP2= mvB; - } else if(mode == MV_PRED_TOPRIGHT && mvC->ref == ref){ - mvP2= mvC; - } - if(mvP2){ - mvP->x = mvP2->x; - mvP->y = mvP2->y; - }else - mv_pred_median(h, mvP, mvA, mvB, mvC); - - if(mode < MV_PRED_PSKIP) { - mvP->x += get_se_golomb(&h->s.gb); - mvP->y += get_se_golomb(&h->s.gb); - } - set_mvs(mvP,size); -} - -/***************************************************************************** - * - * macroblock level - * - ****************************************************************************/ - -/** - * initialise predictors for motion vectors and intra prediction - */ -void ff_cavs_init_mb(AVSContext *h) { - int i; - - /* copy predictors from top line (MB B and C) into cache */ - for(i=0;i<3;i++) { - h->mv[MV_FWD_B2+i] = h->top_mv[0][h->mbx*2+i]; - h->mv[MV_BWD_B2+i] = h->top_mv[1][h->mbx*2+i]; - } - h->pred_mode_Y[1] = h->top_pred_Y[h->mbx*2+0]; - h->pred_mode_Y[2] = h->top_pred_Y[h->mbx*2+1]; - /* clear top predictors if MB B is not available */ - if(!(h->flags & B_AVAIL)) { - h->mv[MV_FWD_B2] = ff_cavs_un_mv; - h->mv[MV_FWD_B3] = ff_cavs_un_mv; - h->mv[MV_BWD_B2] = ff_cavs_un_mv; - h->mv[MV_BWD_B3] = ff_cavs_un_mv; - h->pred_mode_Y[1] = h->pred_mode_Y[2] = NOT_AVAIL; - h->flags &= ~(C_AVAIL|D_AVAIL); - } else if(h->mbx) { - h->flags |= D_AVAIL; - } - if(h->mbx == h->mb_width-1) //MB C not available - h->flags &= ~C_AVAIL; - /* clear top-right predictors if MB C is not available */ - if(!(h->flags & C_AVAIL)) { - h->mv[MV_FWD_C2] = ff_cavs_un_mv; - h->mv[MV_BWD_C2] = ff_cavs_un_mv; - } - /* clear top-left predictors if MB D is not available */ - if(!(h->flags & D_AVAIL)) { - h->mv[MV_FWD_D3] = ff_cavs_un_mv; - h->mv[MV_BWD_D3] = ff_cavs_un_mv; - } - /* set pointer for co-located macroblock type */ - h->col_type = &h->col_type_base[h->mby*h->mb_width + h->mbx]; -} - -/** - * save predictors for later macroblocks and increase - * macroblock address - * @returns 0 if end of frame is reached, 1 otherwise - */ -int ff_cavs_next_mb(AVSContext *h) { - int i; - - h->flags |= A_AVAIL; - h->cy += 16; - h->cu += 8; - h->cv += 8; - /* copy mvs as predictors to the left */ - for(i=0;i<=20;i+=4) - h->mv[i] = h->mv[i+2]; - /* copy bottom mvs from cache to top line */ - h->top_mv[0][h->mbx*2+0] = h->mv[MV_FWD_X2]; - h->top_mv[0][h->mbx*2+1] = h->mv[MV_FWD_X3]; - h->top_mv[1][h->mbx*2+0] = h->mv[MV_BWD_X2]; - h->top_mv[1][h->mbx*2+1] = h->mv[MV_BWD_X3]; - /* next MB address */ - h->mbx++; - if(h->mbx == h->mb_width) { //new mb line - h->flags = B_AVAIL|C_AVAIL; - /* clear left pred_modes */ - h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; - /* clear left mv predictors */ - for(i=0;i<=20;i+=4) - h->mv[i] = ff_cavs_un_mv; - h->mbx = 0; - h->mby++; - /* re-calculate sample pointers */ - h->cy = h->picture.data[0] + h->mby*16*h->l_stride; - h->cu = h->picture.data[1] + h->mby*8*h->c_stride; - h->cv = h->picture.data[2] + h->mby*8*h->c_stride; - if(h->mby == h->mb_height) { //frame end - return 0; - } else { - //check_for_slice(h); - } - } - return 1; -} - -/***************************************************************************** - * - * frame level - * - ****************************************************************************/ - -void ff_cavs_init_pic(AVSContext *h) { - int i; - - /* clear some predictors */ - for(i=0;i<=20;i+=4) - h->mv[i] = ff_cavs_un_mv; - h->mv[MV_BWD_X0] = ff_cavs_dir_mv; - set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); - h->mv[MV_FWD_X0] = ff_cavs_dir_mv; - set_mvs(&h->mv[MV_FWD_X0], BLK_16X16); - h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; - h->cy = h->picture.data[0]; - h->cu = h->picture.data[1]; - h->cv = h->picture.data[2]; - h->l_stride = h->picture.linesize[0]; - h->c_stride = h->picture.linesize[1]; - h->luma_scan[2] = 8*h->l_stride; - h->luma_scan[3] = 8*h->l_stride+8; - h->mbx = h->mby = 0; - h->flags = 0; -} - -/***************************************************************************** - * - * headers and interface - * - ****************************************************************************/ - -/** - * some predictions require data from the top-neighbouring macroblock. - * this data has to be stored for one complete row of macroblocks - * and this storage space is allocated here - */ -void ff_cavs_init_top_lines(AVSContext *h) { - /* alloc top line of predictors */ - h->top_qp = av_malloc( h->mb_width); - h->top_mv[0] = av_malloc((h->mb_width*2+1)*sizeof(vector_t)); - h->top_mv[1] = av_malloc((h->mb_width*2+1)*sizeof(vector_t)); - h->top_pred_Y = av_malloc( h->mb_width*2*sizeof(*h->top_pred_Y)); - h->top_border_y = av_malloc((h->mb_width+1)*16); - h->top_border_u = av_malloc((h->mb_width)*10); - h->top_border_v = av_malloc((h->mb_width)*10); - - /* alloc space for co-located MVs and types */ - h->col_mv = av_malloc( h->mb_width*h->mb_height*4*sizeof(vector_t)); - h->col_type_base = av_malloc(h->mb_width*h->mb_height); - h->block = av_mallocz(64*sizeof(DCTELEM)); -} - -int ff_cavs_init(AVCodecContext *avctx) { - AVSContext *h = avctx->priv_data; - MpegEncContext * const s = &h->s; - - MPV_decode_defaults(s); - s->avctx = avctx; - - avctx->pix_fmt= PIX_FMT_YUV420P; - - h->luma_scan[0] = 0; - h->luma_scan[1] = 8; - h->intra_pred_l[ INTRA_L_VERT] = intra_pred_vert; - h->intra_pred_l[ INTRA_L_HORIZ] = intra_pred_horiz; - h->intra_pred_l[ INTRA_L_LP] = intra_pred_lp; - h->intra_pred_l[ INTRA_L_DOWN_LEFT] = intra_pred_down_left; - h->intra_pred_l[INTRA_L_DOWN_RIGHT] = intra_pred_down_right; - h->intra_pred_l[ INTRA_L_LP_LEFT] = intra_pred_lp_left; - h->intra_pred_l[ INTRA_L_LP_TOP] = intra_pred_lp_top; - h->intra_pred_l[ INTRA_L_DC_128] = intra_pred_dc_128; - h->intra_pred_c[ INTRA_C_LP] = intra_pred_lp; - h->intra_pred_c[ INTRA_C_HORIZ] = intra_pred_horiz; - h->intra_pred_c[ INTRA_C_VERT] = intra_pred_vert; - h->intra_pred_c[ INTRA_C_PLANE] = intra_pred_plane; - h->intra_pred_c[ INTRA_C_LP_LEFT] = intra_pred_lp_left; - h->intra_pred_c[ INTRA_C_LP_TOP] = intra_pred_lp_top; - h->intra_pred_c[ INTRA_C_DC_128] = intra_pred_dc_128; - h->mv[ 7] = ff_cavs_un_mv; - h->mv[19] = ff_cavs_un_mv; - return 0; -} - -int ff_cavs_end(AVCodecContext *avctx) { - AVSContext *h = avctx->priv_data; - - av_free(h->top_qp); - av_free(h->top_mv[0]); - av_free(h->top_mv[1]); - av_free(h->top_pred_Y); - av_free(h->top_border_y); - av_free(h->top_border_u); - av_free(h->top_border_v); - av_free(h->col_mv); - av_free(h->col_type_base); - av_free(h->block); - return 0; -} |