diff options
Diffstat (limited to 'ffmpeg/libavcodec/cavs.c')
| -rw-r--r-- | ffmpeg/libavcodec/cavs.c | 824 |
1 files changed, 0 insertions, 824 deletions
diff --git a/ffmpeg/libavcodec/cavs.c b/ffmpeg/libavcodec/cavs.c deleted file mode 100644 index cc54429..0000000 --- a/ffmpeg/libavcodec/cavs.c +++ /dev/null @@ -1,824 +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 - * Chinese AVS video (AVS1-P2, JiZhun profile) decoder - * @author Stefan Gehrer <stefan.gehrer@gmx.de> - */ - -#include "avcodec.h" -#include "get_bits.h" -#include "golomb.h" -#include "h264chroma.h" -#include "mathops.h" -#include "cavs.h" - -static const uint8_t alpha_tab[64] = { - 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, - 4, 4, 5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 18, 20, - 22, 24, 26, 28, 30, 33, 33, 35, 35, 36, 37, 37, 39, 39, 42, 44, - 46, 48, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64 -}; - -static const uint8_t beta_tab[64] = { - 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, - 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, - 6, 7, 7, 7, 8, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 14, - 15, 16, 17, 18, 19, 20, 21, 22, 23, 23, 24, 24, 25, 25, 26, 27 -}; - -static const uint8_t tc_tab[64] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, - 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, - 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9 -}; - -/** mark block as unavailable, i.e. out of picture - * or not yet decoded */ -static const cavs_vector un_mv = { 0, 0, 1, NOT_AVAIL }; - -static const int8_t left_modifier_l[8] = { 0, -1, 6, -1, -1, 7, 6, 7 }; -static const int8_t top_modifier_l[8] = { -1, 1, 5, -1, -1, 5, 7, 7 }; -static const int8_t left_modifier_c[7] = { 5, -1, 2, -1, 6, 5, 6 }; -static const int8_t top_modifier_c[7] = { 4, 1, -1, -1, 4, 6, 6 }; - -/***************************************************************************** - * - * in-loop deblocking filter - * - ****************************************************************************/ - -static inline int get_bs(cavs_vector *mvP, cavs_vector *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 cavs_mb mb_type) -{ - 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) - memset(bs, 2, 8); - else { - memset(bs, 0, 8); - 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 (AV_RN64(bs)) { - if (h->flags & A_AVAIL) { - qp_avg = (h->qp + h->left_qp + 1) >> 1; - SET_PARAMS; - h->cdsp.cavs_filter_lv(h->cy, h->l_stride, alpha, beta, tc, bs[0], bs[1]); - h->cdsp.cavs_filter_cv(h->cu, h->c_stride, alpha, beta, tc, bs[0], bs[1]); - h->cdsp.cavs_filter_cv(h->cv, h->c_stride, alpha, beta, tc, bs[0], bs[1]); - } - qp_avg = h->qp; - SET_PARAMS; - h->cdsp.cavs_filter_lv(h->cy + 8, h->l_stride, alpha, beta, tc, bs[2], bs[3]); - h->cdsp.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->cdsp.cavs_filter_lh(h->cy, h->l_stride, alpha, beta, tc, bs[4], bs[5]); - h->cdsp.cavs_filter_ch(h->cu, h->c_stride, alpha, beta, tc, bs[4], bs[5]); - h->cdsp.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; - const 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 - -static inline void modify_pred(const int8_t *mod_table, int *mode) -{ - *mode = mod_table[*mode]; - if (*mode < 0) { - av_log(NULL, AV_LOG_ERROR, "Illegal intra prediction mode\n"); - *mode = 0; - } -} - -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(left_modifier_l, &h->pred_mode_Y[4]); - modify_pred(left_modifier_l, &h->pred_mode_Y[7]); - modify_pred(left_modifier_c, pred_mode_uv); - } - if (!(h->flags & B_AVAIL)) { - modify_pred(top_modifier_l, &h->pred_mode_Y[4]); - modify_pred(top_modifier_l, &h->pred_mode_Y[5]); - modify_pred(top_modifier_c, pred_mode_uv); - } -} - -/***************************************************************************** - * - * motion compensation - * - ****************************************************************************/ - -static inline void mc_dir_part(AVSContext *h, AVFrame *pic, 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, cavs_vector *mv) -{ - 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; - int extra_height = extra_width; - 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; - int emu = 0; - - 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) { - h->vdsp.emulated_edge_mc(h->edge_emu_buffer, - src_y - 2 - 2 * h->l_stride, - h->l_stride, h->l_stride, - 16 + 5, 16 + 5 /* FIXME */, - full_mx - 2, full_my - 2, - pic_width, pic_height); - src_y = h->edge_emu_buffer + 2 + 2 * h->l_stride; - emu = 1; - } - - // FIXME try variable height perhaps? - qpix_op[luma_xy](dest_y, src_y, h->l_stride); - - if (emu) { - h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb, - h->c_stride, h->c_stride, - 9, 9 /* FIXME */, - mx >> 3, my >> 3, - pic_width >> 1, pic_height >> 1); - src_cb = h->edge_emu_buffer; - } - 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, 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 += x_offset * 2 + y_offset * h->l_stride * 2; - 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 - * - ****************************************************************************/ - -int 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; - - return 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; -} |