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788 lines
28 KiB
788 lines
28 KiB
/* |
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* Chinese AVS video (AVS1-P2, JiZhun profile) decoder. |
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* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/** |
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* @file |
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* Chinese AVS video (AVS1-P2, JiZhun profile) decoder |
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* @author Stefan Gehrer <stefan.gehrer@gmx.de> |
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*/ |
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#include "avcodec.h" |
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#include "get_bits.h" |
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#include "golomb.h" |
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#include "h264chroma.h" |
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#include "mathops.h" |
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#include "cavs.h" |
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static const uint8_t alpha_tab[64] = { |
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, |
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4, 4, 5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 18, 20, |
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22, 24, 26, 28, 30, 33, 33, 35, 35, 36, 37, 37, 39, 39, 42, 44, |
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46, 48, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64 |
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}; |
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static const uint8_t beta_tab[64] = { |
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, |
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2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, |
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6, 7, 7, 7, 8, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 14, |
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15, 16, 17, 18, 19, 20, 21, 22, 23, 23, 24, 24, 25, 25, 26, 27 |
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}; |
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static const uint8_t tc_tab[64] = { |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, |
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2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, |
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5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9 |
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}; |
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|
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/** mark block as unavailable, i.e. out of picture |
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or not yet decoded */ |
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static const cavs_vector un_mv = { 0, 0, 1, NOT_AVAIL }; |
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static const int8_t left_modifier_l[8] = { 0, -1, 6, -1, -1, 7, 6, 7 }; |
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static const int8_t top_modifier_l[8] = { -1, 1, 5, -1, -1, 5, 7, 7 }; |
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static const int8_t left_modifier_c[7] = { 5, -1, 2, -1, 6, 5, 6 }; |
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static const int8_t top_modifier_c[7] = { 4, 1, -1, -1, 4, 6, 6 }; |
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/***************************************************************************** |
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* |
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* in-loop deblocking filter |
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* |
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****************************************************************************/ |
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static inline int get_bs(cavs_vector *mvP, cavs_vector *mvQ, int b) |
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{ |
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if ((mvP->ref == REF_INTRA) || (mvQ->ref == REF_INTRA)) |
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return 2; |
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if ((abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4)) |
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return 1; |
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if (b) { |
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mvP += MV_BWD_OFFS; |
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mvQ += MV_BWD_OFFS; |
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if ((abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4)) |
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return 1; |
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} else { |
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if (mvP->ref != mvQ->ref) |
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return 1; |
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} |
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return 0; |
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} |
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#define SET_PARAMS \ |
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alpha = alpha_tab[av_clip(qp_avg + h->alpha_offset, 0, 63)]; \ |
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beta = beta_tab[av_clip(qp_avg + h->beta_offset, 0, 63)]; \ |
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tc = tc_tab[av_clip(qp_avg + h->alpha_offset, 0, 63)]; |
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|
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/** |
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* in-loop deblocking filter for a single macroblock |
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* |
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* boundary strength (bs) mapping: |
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* |
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* --4---5-- |
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* 0 2 | |
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* | 6 | 7 | |
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* 1 3 | |
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* --------- |
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* |
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*/ |
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void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type) |
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{ |
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uint8_t bs[8]; |
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int qp_avg, alpha, beta, tc; |
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int i; |
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|
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/* save un-deblocked lines */ |
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h->topleft_border_y = h->top_border_y[h->mbx * 16 + 15]; |
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h->topleft_border_u = h->top_border_u[h->mbx * 10 + 8]; |
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h->topleft_border_v = h->top_border_v[h->mbx * 10 + 8]; |
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memcpy(&h->top_border_y[h->mbx * 16], h->cy + 15 * h->l_stride, 16); |
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memcpy(&h->top_border_u[h->mbx * 10 + 1], h->cu + 7 * h->c_stride, 8); |
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memcpy(&h->top_border_v[h->mbx * 10 + 1], h->cv + 7 * h->c_stride, 8); |
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for (i = 0; i < 8; i++) { |
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h->left_border_y[i * 2 + 1] = *(h->cy + 15 + (i * 2 + 0) * h->l_stride); |
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h->left_border_y[i * 2 + 2] = *(h->cy + 15 + (i * 2 + 1) * h->l_stride); |
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h->left_border_u[i + 1] = *(h->cu + 7 + i * h->c_stride); |
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h->left_border_v[i + 1] = *(h->cv + 7 + i * h->c_stride); |
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} |
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if (!h->loop_filter_disable) { |
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/* determine bs */ |
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if (mb_type == I_8X8) |
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memset(bs, 2, 8); |
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else{ |
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memset(bs, 0, 8); |
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if (ff_cavs_partition_flags[mb_type] & SPLITV) { |
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bs[2] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X1], mb_type > P_8X8); |
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bs[3] = get_bs(&h->mv[MV_FWD_X2], &h->mv[MV_FWD_X3], mb_type > P_8X8); |
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} |
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if (ff_cavs_partition_flags[mb_type] & SPLITH) { |
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bs[6] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X2], mb_type > P_8X8); |
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bs[7] = get_bs(&h->mv[MV_FWD_X1], &h->mv[MV_FWD_X3], mb_type > P_8X8); |
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} |
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bs[0] = get_bs(&h->mv[MV_FWD_A1], &h->mv[MV_FWD_X0], mb_type > P_8X8); |
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bs[1] = get_bs(&h->mv[MV_FWD_A3], &h->mv[MV_FWD_X2], mb_type > P_8X8); |
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bs[4] = get_bs(&h->mv[MV_FWD_B2], &h->mv[MV_FWD_X0], mb_type > P_8X8); |
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bs[5] = get_bs(&h->mv[MV_FWD_B3], &h->mv[MV_FWD_X1], mb_type > P_8X8); |
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} |
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if (AV_RN64(bs)) { |
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if (h->flags & A_AVAIL) { |
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qp_avg = (h->qp + h->left_qp + 1) >> 1; |
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SET_PARAMS; |
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h->cdsp.cavs_filter_lv(h->cy, h->l_stride, alpha, beta, tc, bs[0], bs[1]); |
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h->cdsp.cavs_filter_cv(h->cu, h->c_stride, alpha, beta, tc, bs[0], bs[1]); |
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h->cdsp.cavs_filter_cv(h->cv, h->c_stride, alpha, beta, tc, bs[0], bs[1]); |
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} |
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qp_avg = h->qp; |
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SET_PARAMS; |
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h->cdsp.cavs_filter_lv(h->cy + 8, h->l_stride, alpha, beta, tc, bs[2], bs[3]); |
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h->cdsp.cavs_filter_lh(h->cy + 8 * h->l_stride, h->l_stride, alpha, beta, tc, bs[6], bs[7]); |
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if (h->flags & B_AVAIL) { |
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qp_avg = (h->qp + h->top_qp[h->mbx] + 1) >> 1; |
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SET_PARAMS; |
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h->cdsp.cavs_filter_lh(h->cy, h->l_stride, alpha, beta, tc, bs[4], bs[5]); |
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h->cdsp.cavs_filter_ch(h->cu, h->c_stride, alpha, beta, tc, bs[4], bs[5]); |
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h->cdsp.cavs_filter_ch(h->cv, h->c_stride, alpha, beta, tc, bs[4], bs[5]); |
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} |
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} |
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} |
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h->left_qp = h->qp; |
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h->top_qp[h->mbx] = h->qp; |
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} |
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#undef SET_PARAMS |
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/***************************************************************************** |
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* |
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* spatial intra prediction |
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* |
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****************************************************************************/ |
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void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, |
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uint8_t **left, int block) |
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{ |
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int i; |
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switch (block) { |
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case 0: |
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*left = h->left_border_y; |
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h->left_border_y[0] = h->left_border_y[1]; |
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memset(&h->left_border_y[17], h->left_border_y[16], 9); |
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memcpy(&top[1], &h->top_border_y[h->mbx * 16], 16); |
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top[17] = top[16]; |
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top[0] = top[1]; |
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if ((h->flags & A_AVAIL) && (h->flags & B_AVAIL)) |
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h->left_border_y[0] = top[0] = h->topleft_border_y; |
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break; |
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case 1: |
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*left = h->intern_border_y; |
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for (i = 0; i < 8; i++) |
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h->intern_border_y[i + 1] = *(h->cy + 7 + i * h->l_stride); |
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memset(&h->intern_border_y[9], h->intern_border_y[8], 9); |
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h->intern_border_y[0] = h->intern_border_y[1]; |
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memcpy(&top[1], &h->top_border_y[h->mbx * 16 + 8], 8); |
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if (h->flags & C_AVAIL) |
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memcpy(&top[9], &h->top_border_y[(h->mbx + 1) * 16], 8); |
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else |
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memset(&top[9], top[8], 9); |
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top[17] = top[16]; |
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top[0] = top[1]; |
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if (h->flags & B_AVAIL) |
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h->intern_border_y[0] = top[0] = h->top_border_y[h->mbx * 16 + 7]; |
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break; |
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case 2: |
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*left = &h->left_border_y[8]; |
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memcpy(&top[1], h->cy + 7 * h->l_stride, 16); |
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top[17] = top[16]; |
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top[0] = top[1]; |
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if (h->flags & A_AVAIL) |
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top[0] = h->left_border_y[8]; |
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break; |
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case 3: |
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*left = &h->intern_border_y[8]; |
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for (i = 0; i < 8; i++) |
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h->intern_border_y[i + 9] = *(h->cy + 7 + (i + 8) * h->l_stride); |
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memset(&h->intern_border_y[17], h->intern_border_y[16], 9); |
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memcpy(&top[0], h->cy + 7 + 7 * h->l_stride, 9); |
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memset(&top[9], top[8], 9); |
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break; |
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} |
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} |
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void ff_cavs_load_intra_pred_chroma(AVSContext *h) |
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{ |
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/* extend borders by one pixel */ |
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h->left_border_u[9] = h->left_border_u[8]; |
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h->left_border_v[9] = h->left_border_v[8]; |
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h->top_border_u[h->mbx * 10 + 9] = h->top_border_u[h->mbx * 10 + 8]; |
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h->top_border_v[h->mbx * 10 + 9] = h->top_border_v[h->mbx * 10 + 8]; |
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if (h->mbx && h->mby) { |
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h->top_border_u[h->mbx * 10] = h->left_border_u[0] = h->topleft_border_u; |
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h->top_border_v[h->mbx * 10] = h->left_border_v[0] = h->topleft_border_v; |
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} else { |
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h->left_border_u[0] = h->left_border_u[1]; |
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h->left_border_v[0] = h->left_border_v[1]; |
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h->top_border_u[h->mbx * 10] = h->top_border_u[h->mbx * 10 + 1]; |
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h->top_border_v[h->mbx * 10] = h->top_border_v[h->mbx * 10 + 1]; |
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} |
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} |
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static void intra_pred_vert(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int y; |
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uint64_t a = AV_RN64(&top[1]); |
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for (y = 0; y < 8; y++) { |
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*((uint64_t *)(d + y * stride)) = a; |
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} |
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} |
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static void intra_pred_horiz(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int y; |
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uint64_t a; |
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for (y = 0; y < 8; y++) { |
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a = left[y + 1] * 0x0101010101010101ULL; |
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*((uint64_t *)(d + y * stride)) = a; |
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} |
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} |
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static void intra_pred_dc_128(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int y; |
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uint64_t a = 0x8080808080808080ULL; |
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for (y = 0; y < 8; y++) |
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*((uint64_t *)(d + y * stride)) = a; |
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} |
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static void intra_pred_plane(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int x, y, ia; |
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int ih = 0; |
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int iv = 0; |
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uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; |
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|
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for (x = 0; x < 4; x++) { |
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ih += (x + 1) * (top [5 + x] - top [3 - x]); |
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iv += (x + 1) * (left[5 + x] - left[3 - x]); |
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} |
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ia = (top[8] + left[8]) << 4; |
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ih = (17 * ih + 16) >> 5; |
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iv = (17 * iv + 16) >> 5; |
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for (y = 0; y < 8; y++) |
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for (x = 0; x < 8; x++) |
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d[y * stride + x] = cm[(ia + (x - 3) * ih + (y - 3) * iv + 16) >> 5]; |
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} |
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#define LOWPASS(ARRAY,INDEX) \ |
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((ARRAY[(INDEX) - 1] + 2 * ARRAY[(INDEX)] + ARRAY[(INDEX) + 1] + 2) >> 2) |
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|
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static void intra_pred_lp(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int x, y; |
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for (y = 0; y < 8; y++) |
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for (x = 0; x < 8; x++) |
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d[y * stride + x] = (LOWPASS(top, x + 1) + LOWPASS(left, y + 1)) >> 1; |
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} |
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static void intra_pred_down_left(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int x, y; |
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for (y = 0; y < 8; y++) |
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for (x = 0; x < 8; x++) |
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d[y * stride + x] = (LOWPASS(top, x + y + 2) + LOWPASS(left, x + y + 2)) >> 1; |
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} |
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|
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static void intra_pred_down_right(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int x, y; |
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for (y = 0; y < 8; y++) |
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for (x = 0; x < 8; x++) |
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if (x == y) |
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d[y * stride + x] = (left[1] + 2 * top[0] + top[1] + 2) >> 2; |
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else if (x > y) |
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d[y * stride + x] = LOWPASS(top, x - y); |
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else |
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d[y * stride + x] = LOWPASS(left, y - x); |
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} |
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|
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static void intra_pred_lp_left(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int x, y; |
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for (y = 0; y < 8; y++) |
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for (x = 0; x < 8; x++) |
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d[y * stride + x] = LOWPASS(left, y + 1); |
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} |
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static void intra_pred_lp_top(uint8_t *d,uint8_t *top,uint8_t *left,int stride) |
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{ |
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int x, y; |
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for (y = 0; y < 8; y++) |
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for (x = 0; x < 8; x++) |
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d[y * stride + x] = LOWPASS(top, x + 1); |
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} |
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#undef LOWPASS |
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|
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static inline void modify_pred(const int8_t *mod_table, int *mode) |
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{ |
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*mode = mod_table[*mode]; |
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if (*mode < 0) { |
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av_log(NULL, AV_LOG_ERROR, "Illegal intra prediction mode\n"); |
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*mode = 0; |
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} |
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} |
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|
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void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv) |
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{ |
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/* save pred modes before they get modified */ |
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h->pred_mode_Y[3] = h->pred_mode_Y[5]; |
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h->pred_mode_Y[6] = h->pred_mode_Y[8]; |
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h->top_pred_Y[h->mbx * 2 + 0] = h->pred_mode_Y[7]; |
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h->top_pred_Y[h->mbx * 2 + 1] = h->pred_mode_Y[8]; |
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|
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/* modify pred modes according to availability of neighbour samples */ |
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if (!(h->flags & A_AVAIL)) { |
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modify_pred(left_modifier_l, &h->pred_mode_Y[4]); |
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modify_pred(left_modifier_l, &h->pred_mode_Y[7]); |
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modify_pred(left_modifier_c, pred_mode_uv); |
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} |
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if (!(h->flags & B_AVAIL)) { |
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modify_pred(top_modifier_l, &h->pred_mode_Y[4]); |
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modify_pred(top_modifier_l, &h->pred_mode_Y[5]); |
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modify_pred(top_modifier_c, pred_mode_uv); |
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} |
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} |
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|
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/***************************************************************************** |
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* |
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* motion compensation |
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* |
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****************************************************************************/ |
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|
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static inline void mc_dir_part(AVSContext *h, AVFrame *pic, |
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int chroma_height,int delta,int list,uint8_t *dest_y, |
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uint8_t *dest_cb,uint8_t *dest_cr,int src_x_offset, |
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int src_y_offset,qpel_mc_func *qpix_op, |
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h264_chroma_mc_func chroma_op,cavs_vector *mv) |
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{ |
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const int mx= mv->x + src_x_offset*8; |
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const int my= mv->y + src_y_offset*8; |
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const int luma_xy= (mx&3) + ((my&3)<<2); |
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uint8_t * src_y = pic->data[0] + (mx >> 2) + (my >> 2) * h->l_stride; |
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uint8_t * src_cb = pic->data[1] + (mx >> 3) + (my >> 3) * h->c_stride; |
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uint8_t * src_cr = pic->data[2] + (mx >> 3) + (my >> 3) * h->c_stride; |
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int extra_width = 0; |
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int extra_height= extra_width; |
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int emu=0; |
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const int full_mx= mx>>2; |
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const int full_my= my>>2; |
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const int pic_width = 16*h->mb_width; |
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const int pic_height = 16*h->mb_height; |
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|
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if (!pic->data[0]) |
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return; |
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if(mx&7) extra_width -= 3; |
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if(my&7) extra_height -= 3; |
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|
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if( full_mx < 0-extra_width |
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|| full_my < 0-extra_height |
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|| full_mx + 16/*FIXME*/ > pic_width + extra_width |
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|| full_my + 16/*FIXME*/ > pic_height + extra_height){ |
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h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_y - 2 - 2*h->l_stride, h->l_stride, |
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16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height); |
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src_y= h->edge_emu_buffer + 2 + 2*h->l_stride; |
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emu=1; |
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} |
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|
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qpix_op[luma_xy](dest_y, src_y, h->l_stride); //FIXME try variable height perhaps? |
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|
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if(emu){ |
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h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb, h->c_stride, |
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9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1); |
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src_cb= h->edge_emu_buffer; |
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} |
|
chroma_op(dest_cb, src_cb, h->c_stride, chroma_height, mx&7, my&7); |
|
|
|
if(emu){ |
|
h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr, h->c_stride, |
|
9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1); |
|
src_cr= h->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 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, cavs_vector *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){ |
|
AVFrame *ref = h->DPB[mv->ref].f; |
|
mc_dir_part(h, ref, 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){ |
|
AVFrame *ref = h->DPB[0].f; |
|
mc_dir_part(h, ref, 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 cavs_mb mb_type) { |
|
if(ff_cavs_partition_flags[mb_type] == 0){ // 16x16 |
|
mc_part_std(h, 8, 0, h->cy, h->cu, h->cv, 0, 0, |
|
h->cdsp.put_cavs_qpel_pixels_tab[0], |
|
h->h264chroma.put_h264_chroma_pixels_tab[0], |
|
h->cdsp.avg_cavs_qpel_pixels_tab[0], |
|
h->h264chroma.avg_h264_chroma_pixels_tab[0], |
|
&h->mv[MV_FWD_X0]); |
|
}else{ |
|
mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 0, 0, |
|
h->cdsp.put_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.put_h264_chroma_pixels_tab[1], |
|
h->cdsp.avg_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.avg_h264_chroma_pixels_tab[1], |
|
&h->mv[MV_FWD_X0]); |
|
mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 4, 0, |
|
h->cdsp.put_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.put_h264_chroma_pixels_tab[1], |
|
h->cdsp.avg_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.avg_h264_chroma_pixels_tab[1], |
|
&h->mv[MV_FWD_X1]); |
|
mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 0, 4, |
|
h->cdsp.put_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.put_h264_chroma_pixels_tab[1], |
|
h->cdsp.avg_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.avg_h264_chroma_pixels_tab[1], |
|
&h->mv[MV_FWD_X2]); |
|
mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 4, 4, |
|
h->cdsp.put_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.put_h264_chroma_pixels_tab[1], |
|
h->cdsp.avg_cavs_qpel_pixels_tab[1], |
|
h->h264chroma.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, cavs_vector *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, cavs_vector *mvP, |
|
cavs_vector *mvA, cavs_vector *mvB, cavs_vector *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 cavs_mv_loc nP, enum cavs_mv_loc nC, |
|
enum cavs_mv_pred mode, enum cavs_block size, int ref) { |
|
cavs_vector *mvP = &h->mv[nP]; |
|
cavs_vector *mvA = &h->mv[nP-1]; |
|
cavs_vector *mvB = &h->mv[nP-4]; |
|
cavs_vector *mvC = &h->mv[nC]; |
|
const cavs_vector *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 = &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->gb); |
|
mvP->y += get_se_golomb(&h->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] = un_mv; |
|
h->mv[MV_FWD_B3] = un_mv; |
|
h->mv[MV_BWD_B2] = un_mv; |
|
h->mv[MV_BWD_B3] = 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] = un_mv; |
|
h->mv[MV_BWD_C2] = un_mv; |
|
} |
|
/* clear top-left predictors if MB D is not available */ |
|
if(!(h->flags & D_AVAIL)) { |
|
h->mv[MV_FWD_D3] = un_mv; |
|
h->mv[MV_BWD_D3] = un_mv; |
|
} |
|
} |
|
|
|
/** |
|
* save predictors for later macroblocks and increase |
|
* macroblock address |
|
* @return 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->mbidx++; |
|
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] = un_mv; |
|
h->mbx = 0; |
|
h->mby++; |
|
/* re-calculate sample pointers */ |
|
h->cy = h->cur.f->data[0] + h->mby * 16 * h->l_stride; |
|
h->cu = h->cur.f->data[1] + h->mby * 8 * h->c_stride; |
|
h->cv = h->cur.f->data[2] + h->mby * 8 * h->c_stride; |
|
if(h->mby == h->mb_height) { //frame end |
|
return 0; |
|
} |
|
} |
|
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] = 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->cur.f->data[0]; |
|
h->cu = h->cur.f->data[1]; |
|
h->cv = h->cur.f->data[2]; |
|
h->l_stride = h->cur.f->linesize[0]; |
|
h->c_stride = h->cur.f->linesize[1]; |
|
h->luma_scan[2] = 8*h->l_stride; |
|
h->luma_scan[3] = 8*h->l_stride+8; |
|
h->mbx = h->mby = h->mbidx = 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_mallocz( h->mb_width); |
|
h->top_mv[0] = av_mallocz((h->mb_width*2+1)*sizeof(cavs_vector)); |
|
h->top_mv[1] = av_mallocz((h->mb_width*2+1)*sizeof(cavs_vector)); |
|
h->top_pred_Y = av_mallocz( h->mb_width*2*sizeof(*h->top_pred_Y)); |
|
h->top_border_y = av_mallocz((h->mb_width+1)*16); |
|
h->top_border_u = av_mallocz( h->mb_width * 10); |
|
h->top_border_v = av_mallocz( h->mb_width * 10); |
|
|
|
/* alloc space for co-located MVs and types */ |
|
h->col_mv = av_mallocz( h->mb_width*h->mb_height*4*sizeof(cavs_vector)); |
|
h->col_type_base = av_mallocz(h->mb_width*h->mb_height); |
|
h->block = av_mallocz(64*sizeof(int16_t)); |
|
} |
|
|
|
av_cold int ff_cavs_init(AVCodecContext *avctx) { |
|
AVSContext *h = avctx->priv_data; |
|
|
|
ff_dsputil_init(&h->dsp, avctx); |
|
ff_h264chroma_init(&h->h264chroma, 8); |
|
ff_videodsp_init(&h->vdsp, 8); |
|
ff_cavsdsp_init(&h->cdsp, avctx); |
|
ff_init_scantable_permutation(h->dsp.idct_permutation, |
|
h->cdsp.idct_perm); |
|
ff_init_scantable(h->dsp.idct_permutation, &h->scantable, ff_zigzag_direct); |
|
|
|
h->avctx = avctx; |
|
avctx->pix_fmt= AV_PIX_FMT_YUV420P; |
|
|
|
h->cur.f = av_frame_alloc(); |
|
h->DPB[0].f = av_frame_alloc(); |
|
h->DPB[1].f = av_frame_alloc(); |
|
if (!h->cur.f || !h->DPB[0].f || !h->DPB[1].f) { |
|
ff_cavs_end(avctx); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
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] = un_mv; |
|
h->mv[19] = un_mv; |
|
return 0; |
|
} |
|
|
|
av_cold int ff_cavs_end(AVCodecContext *avctx) { |
|
AVSContext *h = avctx->priv_data; |
|
|
|
av_frame_free(&h->cur.f); |
|
av_frame_free(&h->DPB[0].f); |
|
av_frame_free(&h->DPB[1].f); |
|
|
|
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); |
|
av_freep(&h->edge_emu_buffer); |
|
return 0; |
|
}
|
|
|