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Imported from libpng-1.0.9beta10.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-01-15 22:01:20 -06:00
parent 5e5c1e1f56
commit fbbb5ecb52
100 changed files with 2541 additions and 1279 deletions
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182
pngvcrd.c
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@@ -2,13 +2,20 @@
*
* For Intel x86 CPU and Microsoft Visual C++ compiler
*
* libpng 1.0.9beta1 - November 10, 2000
* libpng 1.0.9beta10 - January 16, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
*
* Contributed by Nirav Chhatrapati, Intel Corporation, 1998
* Interface to libpng contributed by Gilles Vollant, 1999
* Debugging and cleanup by Greg Roelofs, 2000, 2001
*
* In png_do_read_interlace() in libpng versions 1.0.3a through 1.0.4d,
* a sign error in the post-MMX cleanup code for each pixel_depth resulted
* in bad pixels at the beginning of some rows of some images, and also
* (due to out-of-range memory reads and writes) caused heap corruption
* when compiled with MSVC 6.0. The error was fixed in version 1.0.4e.
*
* [png_read_filter_row_mmx_avg() bpp == 2 bugfix, GRR 20000916]
*
@@ -19,19 +26,11 @@
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD)
/*
One of these might need to be defined.
#define DISABLE_PNGVCRD_COMBINE
#define DISABLE_PNGVCRD_INTERLACE
*/
static int mmx_supported=2;
void /* PRIVATE */
png_read_filter_row_c(png_structp png_ptr, png_row_infop row_info,
png_bytep row, png_bytep prev_row, int filter);
static int mmxsupport()
int PNGAPI
png_mmx_support(void)
{
int mmx_supported_local = 0;
_asm {
@@ -83,6 +82,7 @@ NOT_SUPPORTED:
//mmx_supported_local=0; // test code for force don't support MMX
//printf("MMX : %u (1=MMX supported)\n",mmx_supported_local);
mmx_supported = mmx_supported_local;
return mmx_supported_local;
}
@@ -106,19 +106,12 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
#ifdef PNG_USE_LOCAL_ARRAYS
const int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
#ifdef DISABLE_PNGVCRD_COMBINE
int save_mmx_supported = mmx_supported;
#endif
png_debug(1,"in png_combine_row_asm\n");
#ifdef DISABLE_PNGVCRD_COMBINE
if ((png_ptr->transformations & PNG_INTERLACE) && png_ptr->pass != 6)
mmx_supported = 0;
else
#endif
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (mmx_supported == 2) {
png_mmx_support();
}
if (mask == 0xff)
{
@@ -307,7 +300,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
__int64 mask0=0x0102040810204080;
if (mmx_supported)
if ( mmx_supported )
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@@ -407,7 +400,7 @@ end8:
__int64 mask1=0x0101020204040808,
mask0=0x1010202040408080;
if (mmx_supported)
if ( mmx_supported )
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@@ -527,7 +520,7 @@ end16:
len = (png_ptr->width)&~7;
diff = (png_ptr->width)&7;
if (mmx_supported)
if ( mmx_supported )
{
_asm
{
@@ -658,7 +651,7 @@ end24:
len = (png_ptr->width)&~7;
diff = (png_ptr->width)&7;
if (mmx_supported)
if ( mmx_supported )
{
_asm
{
@@ -792,7 +785,7 @@ end32:
mask1=0x2020202040404040,
mask0=0x4040808080808080;
if (mmx_supported)
if ( mmx_supported )
{
srcptr = png_ptr->row_buf + 1;
dstptr = row;
@@ -963,43 +956,27 @@ end48:
} /* end switch (png_ptr->row_info.pixel_depth) */
} /* end if (non-trivial mask) */
#ifdef DISABLE_PNGVCRD_COMBINE
mmx_supported = save_mmx_supported;
#endif
} /* end png_combine_row() */
#if defined(PNG_READ_INTERLACING_SUPPORTED)
void /* PRIVATE */
png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
png_uint_32 transformations)
png_do_read_interlace(png_structp png_ptr)
{
png_row_infop row_info = &(png_ptr->row_info);
png_bytep row = png_ptr->row_buf + 1;
int pass = png_ptr->pass;
png_uint_32 transformations = png_ptr->transformations;
#ifdef PNG_USE_LOCAL_ARRAYS
const int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
#ifdef DISABLE_PNGVCRD_INTERLACE
int save_mmx_supported = mmx_supported;
#endif
png_debug(1,"in png_do_read_interlace\n");
#ifdef DISABLE_PNGVCRD_INTERLACE
/* In libpng versions 1.0.3a through 1.0.4d,
* a sign error in the post-MMX cleanup code for each pixel_depth resulted
* in bad pixels at the beginning of some rows of some images, and also
* (due to out-of-range memory reads and writes) caused heap corruption
* when compiled with MSVC 6.0. The error was fixed in version 1.0.4e,
* and the code appears to work completely correctly, so it is enabled
* by default.
*/
if (1) /* all passes caused a heap problem in the old code */
mmx_supported = 0;
else
#endif
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (mmx_supported == 2) {
png_mmx_support();
}
if (row != NULL && row_info != NULL)
{
@@ -1197,7 +1174,8 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
// sign fix by GRR
// NOTE: there is NO MMX code for 48-bit and 64-bit images
if (mmx_supported) // use MMX routine if machine supports it
// use MMX routine if machine supports it
if ( mmx_supported )
{
if (pixel_bytes == 3)
{
@@ -1885,9 +1863,6 @@ loop4_pass4:
(png_uint_32)row_info->pixel_depth + 7) >> 3);
}
#ifdef DISABLE_PNGVCRD_INTERLACE
mmx_supported = save_mmx_supported;
#endif
}
#endif /* PNG_READ_INTERLACING_SUPPORTED */
@@ -3323,7 +3298,7 @@ dsub3lp:
case 1:
{
// Placed here just in case this is a duplicate of the
// non-MMX code for the SUB filter in png_read_filter_row above
// non-MMX code for the SUB filter in png_read_filter_row below
//
// png_bytep rp;
// png_bytep lp;
@@ -3658,61 +3633,50 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
row, png_bytep prev_row, int filter)
{
#ifdef PNG_DEBUG
char filnm[6];
char filnm[10];
#endif
#define UseMMX 1
if (mmx_supported == 2)
mmx_supported = mmxsupport();
if (!mmx_supported)
{
png_read_filter_row_c(png_ptr, row_info, row, prev_row, filter);
return ;
if (mmx_supported == 2) {
png_mmx_support();
}
#ifdef PNG_DEBUG
png_debug(1, "in png_read_filter_row\n");
# if (UseMMX == 1)
png_debug1(0,"%s, ", "MMX");
# else
png_debug1(0,"%s, ", "x86");
# endif
switch (filter)
{
case 0: sprintf(filnm, "None ");
case 0: sprintf(filnm, "none");
break;
case 1: sprintf(filnm, "Sub ");
case 1: sprintf(filnm, "sub-%s", "MMX");
break;
case 2: sprintf(filnm, "Up ");
case 2: sprintf(filnm, "up-%s", "MMX");
break;
case 3: sprintf(filnm, "Avg ");
case 3: sprintf(filnm, "avg-%s", "MMX");
break;
case 4: sprintf(filnm, "Paeth");
case 4: sprintf(filnm, "Paeth-%s", "MMX");
break;
default: sprintf(filnm, "Unknw");
default: sprintf(filnm, "unknw");
break;
}
png_debug2(0,"row=%5d, %s, ", png_ptr->row_number, filnm);
png_debug2(0, "pd=%2d, b=%d, ", (int)row_info->pixel_depth,
(int)((row_info->pixel_depth + 7) >> 3));
png_debug1(0,"len=%8d, ", row_info->rowbytes);
#endif
#endif /* PNG_DEBUG */
switch (filter)
{
case PNG_FILTER_VALUE_NONE:
break;
case PNG_FILTER_VALUE_SUB:
{
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
{
png_read_filter_row_mmx_sub(row_info, row);
}
else
#endif
{
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
@@ -3725,41 +3689,43 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
*rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
rp++;
}
} //end !UseMMX
}
break;
}
case PNG_FILTER_VALUE_UP:
{
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
{
png_read_filter_row_mmx_up(row_info, row, prev_row);
} //end if UseMMX
}
else
#endif
{
png_bytep rp;
png_bytep pp;
png_uint_32 i;
for (i = 0, rp = row, pp = prev_row;
i < row_info->rowbytes; i++, rp++, pp++)
png_uint_32 istop = row_info->rowbytes;
png_bytep rp = row;
png_bytep pp = prev_row;
for (i = 0; i < istop; ++i)
{
*rp = (png_byte)(((int)(*rp) + (int)(*pp)) & 0xff);
*rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
rp++;
}
} //end !UseMMX
}
break;
}
case PNG_FILTER_VALUE_AVG:
{
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
{
png_read_filter_row_mmx_avg(row_info, row, prev_row);
} //end if UseMMX
}
else
#endif
{
png_uint_32 i;
png_bytep rp = row;
@@ -3781,19 +3747,19 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
((int)(*pp++ + *lp++) >> 1)) & 0xff);
rp++;
}
} //end !UseMMX
}
break;
}
case PNG_FILTER_VALUE_PAETH:
{
#if (UseMMX == 1)
if ((row_info->pixel_depth > 8) &&
(row_info->rowbytes >= 128) )
if (
(row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
(row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
{
png_read_filter_row_mmx_paeth(row_info, row, prev_row);
} //end if UseMMX
}
else
#endif
{
png_uint_32 i;
png_bytep rp = row;
@@ -3844,13 +3810,15 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
*rp = (png_byte)(((int)(*rp) + p) & 0xff);
rp++;
}
} //end !UseMMX
}
break;
}
default:
png_warning(png_ptr, "Ignoring bad adaptive filter type");
png_warning(png_ptr, "Ignoring bad row filter type");
*row=0;
break;
}
}
#endif
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED && PNG_USE_PNGVCRD */