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Fix SPARC memory alignment issues in Pack/Unpack functions

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This commit is contained in:
Jakub Kulík 2019-05-20 14:25:27 +02:00
parent 3368500f18
commit e073f4add0
2 changed files with 43 additions and 0 deletions
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10
src/libImaging/Pack.c
View File

@ -251,6 +251,15 @@ ImagingPackRGB(UINT8* out, const UINT8* in, int pixels)
{
int i = 0;
/* RGB triplets */
#ifdef __sparc
/* SPARC CPUs cannot read integers from nonaligned addresses. */
for (; i < pixels; i++) {
out[0] = in[R];
out[1] = in[G];
out[2] = in[B];
out += 3; in += 4;
}
#else
for (; i < pixels-1; i++) {
((UINT32*)out)[0] = ((UINT32*)in)[i];
out += 3;
@ -261,6 +270,7 @@ ImagingPackRGB(UINT8* out, const UINT8* in, int pixels)
out[2] = in[i*4+B];
out += 3;
}
#endif
}
void

33
src/libImaging/Unpack.c
View File

@ -480,6 +480,16 @@ void
ImagingUnpackRGB(UINT8* _out, const UINT8* in, int pixels)
{
int i = 0;
#ifdef __sparc
/* SPARC CPUs cannot read integers from nonaligned addresses. */
for (; i < pixels; i++) {
_out[R] = in[0];
_out[G] = in[1];
_out[B] = in[2];
_out[A] = 255;
_out += 4; in += 3;
}
#else
UINT32* out = (UINT32*) _out;
/* RGB triplets */
for (; i < pixels-1; i++) {
@ -490,6 +500,7 @@ ImagingUnpackRGB(UINT8* _out, const UINT8* in, int pixels)
out[i] = MAKE_UINT32(in[0], in[1], in[2], 255);
in += 3;
}
#endif
}
void
@ -1085,22 +1096,44 @@ static void
copy4skip1(UINT8* _out, const UINT8* in, int pixels)
{
int i;
#ifdef __sparc
/* SPARC CPUs cannot read integers from nonaligned addresses. */
for (i = 0; i < pixels; i++) {
_out[0] = in[0];
_out[1] = in[1];
_out[2] = in[2];
_out[3] = in[3];
_out += 4; in += 5;
}
#else
UINT32* out = (UINT32*) _out;
for (i = 0; i < pixels; i++) {
out[i] = *(UINT32*)&in[0];
in += 5;
}
#endif
}
static void
copy4skip2(UINT8* _out, const UINT8* in, int pixels)
{
int i;
#ifdef __sparc
/* SPARC CPUs cannot read integers from nonaligned addresses. */
for (i = 0; i < pixels; i++) {
_out[0] = in[0];
_out[1] = in[1];
_out[2] = in[2];
_out[3] = in[3];
_out += 4; in += 6;
}
#else
UINT32* out = (UINT32*) _out;
for (i = 0; i < pixels; i++) {
out[i] = *(UINT32*)&in[0];
in += 6;
}
#endif
}