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fixing memory overwrite bugs in the new converters

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Originally committed as revision 6609 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer
2002-06-29 21:43:28 +00:00
parent 8f4260888a
commit 0598bcbb5f
1 changed files with 8 additions and 7 deletions
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15
postproc/rgb2rgb_template.c
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@@ -256,13 +256,13 @@ static inline void RENAME(rgb16to15)(const uint8_t *src,uint8_t *dst,unsigned sr
register const uint8_t* s=src; register const uint8_t* s=src;
register uint8_t* d=dst; register uint8_t* d=dst;
register const uint8_t *end; register const uint8_t *end;
uint8_t *mm_end; const uint8_t *mm_end;
end = s + src_size; end = s + src_size;
#ifdef HAVE_MMX #ifdef HAVE_MMX
__asm __volatile(PREFETCH" %0"::"m"(*s)); __asm __volatile(PREFETCH" %0"::"m"(*s));
__asm __volatile("movq %0, %%mm7"::"m"(mask15rg)); __asm __volatile("movq %0, %%mm7"::"m"(mask15rg));
__asm __volatile("movq %0, %%mm6"::"m"(mask15b)); __asm __volatile("movq %0, %%mm6"::"m"(mask15b));
mm_end = (uint8_t*)((((unsigned long)end)/16)*16); mm_end = end - 15;
while(s<mm_end) while(s<mm_end)
{ {
__asm __volatile( __asm __volatile(
@@ -290,7 +290,8 @@ static inline void RENAME(rgb16to15)(const uint8_t *src,uint8_t *dst,unsigned sr
__asm __volatile(SFENCE:::"memory"); __asm __volatile(SFENCE:::"memory");
__asm __volatile(EMMS:::"memory"); __asm __volatile(EMMS:::"memory");
#endif #endif
while(s < end) mm_end = end - 3;
while(s < mm_end)
{ {
register uint32_t x= *((uint32_t *)s); register uint32_t x= *((uint32_t *)s);
*((uint32_t *)d) = ((x>>1)&0x7FE07FE0) | (x&0x001F001F); *((uint32_t *)d) = ((x>>1)&0x7FE07FE0) | (x&0x001F001F);
@@ -385,7 +386,7 @@ static inline void RENAME(rgb32tobgr16)(const uint8_t *src, uint8_t *dst, unsign
"movq %0, %%mm7\n\t" "movq %0, %%mm7\n\t"
"movq %1, %%mm6\n\t" "movq %1, %%mm6\n\t"
::"m"(red_16mask),"m"(green_16mask)); ::"m"(red_16mask),"m"(green_16mask));
mm_end = (uint8_t*)((((unsigned long)end)/16)*16); mm_end = end - 15;
while(s < mm_end) while(s < mm_end)
{ {
__asm __volatile( __asm __volatile(
@@ -513,7 +514,7 @@ static inline void RENAME(rgb32tobgr15)(const uint8_t *src, uint8_t *dst, unsign
"movq %0, %%mm7\n\t" "movq %0, %%mm7\n\t"
"movq %1, %%mm6\n\t" "movq %1, %%mm6\n\t"
::"m"(red_15mask),"m"(green_15mask)); ::"m"(red_15mask),"m"(green_15mask));
mm_end = (uint8_t*)((((unsigned long)end)/16)*16); mm_end = end - 15;
while(s < mm_end) while(s < mm_end)
{ {
__asm __volatile( __asm __volatile(
@@ -640,7 +641,7 @@ static inline void RENAME(rgb24tobgr16)(const uint8_t *src, uint8_t *dst, unsign
"movq %0, %%mm7\n\t" "movq %0, %%mm7\n\t"
"movq %1, %%mm6\n\t" "movq %1, %%mm6\n\t"
::"m"(red_16mask),"m"(green_16mask)); ::"m"(red_16mask),"m"(green_16mask));
mm_end = (uint8_t*)((((unsigned long)end)/16)*16); mm_end = end - 15;
while(s < mm_end) while(s < mm_end)
{ {
__asm __volatile( __asm __volatile(
@@ -766,7 +767,7 @@ static inline void RENAME(rgb24tobgr15)(const uint8_t *src, uint8_t *dst, unsign
"movq %0, %%mm7\n\t" "movq %0, %%mm7\n\t"
"movq %1, %%mm6\n\t" "movq %1, %%mm6\n\t"
::"m"(red_15mask),"m"(green_15mask)); ::"m"(red_15mask),"m"(green_15mask));
mm_end = (uint8_t*)((((unsigned long)end)/16)*16); mm_end = end - 15;
while(s < mm_end) while(s < mm_end)
{ {
__asm __volatile( __asm __volatile(