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png_reverse_filter_wrapper - more cleanups

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This commit is contained in:
twinaphex 2015-02-26 07:44:45 +01:00
parent a7d4b0e8bc
commit 9e9dcc12ab
1 changed files with 11 additions and 2 deletions
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13
libretro-common/formats/png/rpng_decode_common.h
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@ -99,6 +99,7 @@ static void png_reverse_filter_deinit(struct rpng_process_t *pngp)
pngp->prev_scanline = NULL;
pngp->pass_initialized = false;
pngp->h = 0;
}
static bool png_reverse_filter_init(uint32_t *data, const struct png_ihdr *ihdr,
@ -138,8 +139,10 @@ static int png_reverse_filter_wrapper(uint32_t *data, const struct png_ihdr *ihd
if (!pngp)
return -1;
if (!pngp->pass_initialized)
{
if (!png_reverse_filter_init(data, ihdr, inflate_buf, pngp, palette))
return -1;
}
cont = pngp->h < ihdr->height;
@ -149,9 +152,15 @@ static int png_reverse_filter_wrapper(uint32_t *data, const struct png_ihdr *ihd
return 1;
}
for (; pngp->h < ihdr->height; )
for (;; )
{
unsigned filter = *inflate_buf++;
unsigned filter;
if (pngp->h < ihdr->height) {}
else
break;
filter = *inflate_buf++;
switch (filter)
{