mirror of https://github.com/FFmpeg/FFmpeg.git
It has been disabled as 'broken' over 3 years ago in b716a792
pull/53/head
Anton Khirnov
11 years ago
parent
a4d0c6e050
commit
a3a55645f0
4 changed files with 0 additions and 151 deletions
@ -1,147 +0,0 @@ |
||||
/*
|
||||
* BlackFin MPEGVIDEO OPTIMIZATIONS |
||||
* |
||||
* Copyright (C) 2007 Marc Hoffman <mmh@pleasantst.com> |
||||
* |
||||
* This file is part of Libav. |
||||
* |
||||
* Libav 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. |
||||
* |
||||
* Libav 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 Libav; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
#include "libavutil/attributes.h" |
||||
#include "libavcodec/avcodec.h" |
||||
#include "libavcodec/mpegvideo.h" |
||||
#include "dsputil_bfin.h" |
||||
|
||||
static int dct_quantize_bfin (MpegEncContext *s, |
||||
int16_t *block, int n, |
||||
int qscale, int *overflow) |
||||
{ |
||||
int last_non_zero, q, start_i; |
||||
const short *qmat; |
||||
short *bias; |
||||
const uint8_t *scantable= s->intra_scantable.scantable; |
||||
short dc; |
||||
int max=0; |
||||
|
||||
PROF("fdct",0); |
||||
s->dsp.fdct(block); |
||||
EPROF(); |
||||
|
||||
PROF("denoise",1); |
||||
if(s->dct_error_sum) |
||||
s->denoise_dct(s, block); |
||||
EPROF(); |
||||
|
||||
PROF("quant-init",2); |
||||
if (s->mb_intra) { |
||||
if (!s->h263_aic) { |
||||
if (n < 4) |
||||
q = s->y_dc_scale; |
||||
else |
||||
q = s->c_dc_scale; |
||||
q = q << 3; |
||||
} else |
||||
/* For AIC we skip quant/dequant of INTRADC */ |
||||
q = 1 << 3; |
||||
|
||||
/* note: block[0] is assumed to be positive */ |
||||
dc = block[0] = (block[0] + (q >> 1)) / q; |
||||
start_i = 1; |
||||
last_non_zero = 0; |
||||
bias = s->q_intra_matrix16[qscale][1]; |
||||
qmat = s->q_intra_matrix16[qscale][0]; |
||||
|
||||
} else { |
||||
start_i = 0; |
||||
last_non_zero = -1; |
||||
bias = s->q_inter_matrix16[qscale][1]; |
||||
qmat = s->q_inter_matrix16[qscale][0]; |
||||
|
||||
} |
||||
EPROF(); |
||||
|
||||
PROF("quantize",4); |
||||
|
||||
/* for(i=start_i; i<64; i++) { */ |
||||
/* sign = (block[i]>>15)|1; */ |
||||
/* level = ((abs(block[i])+bias[0])*qmat[i])>>16; */ |
||||
/* if (level < 0) level = 0; */ |
||||
/* max |= level; */ |
||||
/* level = level * sign; */ |
||||
/* block[i] = level; */ |
||||
/* } */ |
||||
|
||||
__asm__ volatile |
||||
("i2=%1;\n\t" |
||||
"r1=[%1++]; \n\t" |
||||
"r0=r1>>>15 (v); \n\t" |
||||
"lsetup (0f,1f) lc0=%3; \n\t" |
||||
"0: r0=r0|%4; \n\t" |
||||
" r1=abs r1 (v) || r2=[%2++];\n\t" |
||||
" r1=r1+|+%5; \n\t" |
||||
" r1=max(r1,%6) (v); \n\t" |
||||
" r1.h=(a1 =r1.h*r2.h), r1.l=(a0 =r1.l*r2.l) (tfu); \n\t" |
||||
" %0=%0|r1; \n\t" |
||||
" r0.h=(a1 =r1.h*r0.h), r0.l=(a0 =r1.l*r0.l) (is) || r1=[%1++];\n\t" |
||||
"1: r0=r1>>>15 (v) || [i2++]=r0;\n\t" |
||||
"r1=%0>>16; \n\t" |
||||
"%0=%0|r1; \n\t" |
||||
"%0.h=0; \n\t" |
||||
: "=&d" (max) |
||||
: "b" (block), "b" (qmat), "a" (32), "d" (0x00010001), "d" (bias[0]*0x10001), "d" (0) |
||||
: "R0","R1","R2", "I2"); |
||||
if (start_i == 1) block[0] = dc; |
||||
|
||||
EPROF(); |
||||
|
||||
|
||||
PROF("zzscan",5); |
||||
|
||||
__asm__ volatile |
||||
("r0=b[%1--] (x); \n\t" |
||||
"lsetup (0f,1f) lc0=%3; \n\t" /* for(i=63; i>=start_i; i--) { */ |
||||
"0: p0=r0; \n\t" /* j = scantable[i]; */ |
||||
" p0=%2+(p0<<1); \n\t" /* if (block[j]) { */ |
||||
" r0=w[p0]; \n\t" /* last_non_zero = i; */ |
||||
" cc=r0==0; \n\t" /* break; */ |
||||
" if !cc jump 2f; \n\t" /* } */ |
||||
"1: r0=b[%1--] (x); \n\t" /* } */ |
||||
" %0=%4; \n\t" |
||||
" jump 3f; \n\t" |
||||
"2: %0=lc0; \n\t" |
||||
"3:\n\t" |
||||
|
||||
: "=d" (last_non_zero) |
||||
: "a" (scantable+63), "a" (block), "a" (63), "d" (last_non_zero) |
||||
: "P0","R0"); |
||||
|
||||
EPROF(); |
||||
|
||||
*overflow= s->max_qcoeff < max; //overflow might have happened
|
||||
|
||||
bfprof(); |
||||
|
||||
/* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */ |
||||
if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM) |
||||
ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero); |
||||
|
||||
return last_non_zero; |
||||
} |
||||
|
||||
av_cold void ff_MPV_common_init_bfin (MpegEncContext *s) |
||||
{ |
||||
/* s->dct_quantize= dct_quantize_bfin; */ |
||||
} |
||||
Loading…
Reference in new issue