0,0 → 1,855 |
/* |
* 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 "idctdsp.h" |
#include "internal.h" |
#include "mathops.h" |
#include "qpeldsp.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) || |
(mvP->ref != mvQ->ref)) |
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) || |
(mvP->ref != mvQ->ref)) |
return 1; |
} |
return 0; |
} |
|
#define SET_PARAMS \ |
alpha = alpha_tab[av_clip_uintp2(qp_avg + h->alpha_offset, 6)]; \ |
beta = beta_tab[av_clip_uintp2(qp_avg + h->beta_offset, 6)]; \ |
tc = tc_tab[av_clip_uintp2(qp_avg + h->alpha_offset, 6)]; |
|
/** |
* 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]); |
qp_avg = (ff_cavs_chroma_qp[h->qp] + ff_cavs_chroma_qp[h->left_qp] + 1) >> 1; |
SET_PARAMS; |
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]); |
qp_avg = (ff_cavs_chroma_qp[h->qp] + ff_cavs_chroma_qp[h->top_qp[h->mbx]] + 1) >> 1; |
SET_PARAMS; |
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]; |
if(h->flags & C_AVAIL) { |
h->top_border_u[h->mbx*10 + 9] = h->top_border_u[h->mbx*10 + 11]; |
h->top_border_v[h->mbx*10 + 9] = h->top_border_v[h->mbx*10 + 11]; |
} else { |
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->flags & A_AVAIL) && (h->flags & B_AVAIL)) { |
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_crop_tab + 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[FFMAX(src->ref, 0)]; |
|
*d_x = (src->x * distp * den + 256 + FF_SIGNBIT(src->x)) >> 9; |
*d_y = (src->y * distp * den + 256 + FF_SIGNBIT(src->y)) >> 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 || (nP == MV_FWD_X3) || (nP == MV_BWD_X3 )) |
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 |
*/ |
int 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_array(h->mb_width * 2 + 1, sizeof(cavs_vector)); |
h->top_mv[1] = av_mallocz_array(h->mb_width * 2 + 1, sizeof(cavs_vector)); |
h->top_pred_Y = av_mallocz_array(h->mb_width * 2, sizeof(*h->top_pred_Y)); |
h->top_border_y = av_mallocz_array(h->mb_width + 1, 16); |
h->top_border_u = av_mallocz_array(h->mb_width, 10); |
h->top_border_v = av_mallocz_array(h->mb_width, 10); |
|
/* alloc space for co-located MVs and types */ |
h->col_mv = av_mallocz_array(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)); |
|
if (!h->top_qp || !h->top_mv[0] || !h->top_mv[1] || !h->top_pred_Y || |
!h->top_border_y || !h->top_border_u || !h->top_border_v || |
!h->col_mv || !h->col_type_base || !h->block) { |
av_freep(&h->top_qp); |
av_freep(&h->top_mv[0]); |
av_freep(&h->top_mv[1]); |
av_freep(&h->top_pred_Y); |
av_freep(&h->top_border_y); |
av_freep(&h->top_border_u); |
av_freep(&h->top_border_v); |
av_freep(&h->col_mv); |
av_freep(&h->col_type_base); |
av_freep(&h->block); |
return AVERROR(ENOMEM); |
} |
return 0; |
} |
|
av_cold int ff_cavs_init(AVCodecContext *avctx) |
{ |
AVSContext *h = avctx->priv_data; |
|
ff_blockdsp_init(&h->bdsp, avctx); |
ff_h264chroma_init(&h->h264chroma, 8); |
ff_idctdsp_init(&h->idsp, avctx); |
ff_videodsp_init(&h->vdsp, 8); |
ff_cavsdsp_init(&h->cdsp, avctx); |
ff_init_scantable_permutation(h->idsp.idct_permutation, |
h->cdsp.idct_perm); |
ff_init_scantable(h->idsp.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_freep(&h->top_qp); |
av_freep(&h->top_mv[0]); |
av_freep(&h->top_mv[1]); |
av_freep(&h->top_pred_Y); |
av_freep(&h->top_border_y); |
av_freep(&h->top_border_u); |
av_freep(&h->top_border_v); |
av_freep(&h->col_mv); |
av_freep(&h->col_type_base); |
av_freep(&h->block); |
av_freep(&h->edge_emu_buffer); |
return 0; |
} |