videolan/ffmpeg
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minor QP bugfix

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Originally committed as revision 4400 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer 2002-01-28 22:38:15 +00:00
parent 5dfd24ac98
commit bdd677ac13
1 changed files with 9 additions and 9 deletions
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18
postproc/postprocess_template.c
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@ -1,5 +1,5 @@
/*
Copyright (C) 2001 Michael Niedermayer (michaelni@gmx.at)
Copyright (C) 2001-2002 Michael Niedermayer (michaelni@gmx.at)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -2587,7 +2587,7 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
after watching a black picture for 5 hours*/
static uint64_t *yHistogram= NULL;
int black=0, white=255; // blackest black and whitest white in the picture
int QPCorrecture= 256;
int QPCorrecture= 256*256;
/* Temporary buffers for handling the last row(s) */
static uint8_t *tempDst= NULL;
@ -2615,7 +2615,6 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
long long memcpyTime=0, vertTime=0, horizTime=0, sumTime;
sumTime= rdtsc();
#endif
dcOffset= ppMode->maxDcDiff;
dcThreshold= ppMode->maxDcDiff*2 + 1;
@ -2727,16 +2726,17 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
packedYScale|= packedYScale<<32;
packedYScale|= packedYScale<<16;
if(mode & LEVEL_FIX) QPCorrecture= (int)(scale*256*256 + 0.5);
else QPCorrecture= 256*256;
}
else
{
packedYScale= 0x0100010001000100LL;
packedYOffset= 0;
QPCorrecture= 256*256;
}
if(mode & LEVEL_FIX) QPCorrecture= packedYScale &0xFFFF;
else QPCorrecture= 256;
/* copy & deinterlace first row of blocks */
y=-BLOCK_SIZE;
{
@ -2819,8 +2819,8 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
#endif
#ifdef ARCH_X86
int *QPptr= isColor ? &QPs[(y>>3)*QPStride] :&QPs[(y>>4)*QPStride];
int QPDelta= isColor ? 1<<(32-3) : 1<<(32-4);
int QPFrac= QPDelta;
int QPDelta= isColor ? (-1) : 1<<31;
int QPFrac= 1<<30;
#endif
int QP=0;
/* can we mess with a 8x16 block from srcBlock/dstBlock downwards and 1 line upwards
@ -2875,7 +2875,7 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
#endif
if(!isColor)
{
QP= (QP* QPCorrecture)>>8;
QP= (QP* QPCorrecture + 256*128)>>16;
yHistogram[ srcBlock[srcStride*12 + 4] ]++;
}
#ifdef HAVE_MMX