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Make png_reverse_filter_wrapper nonblocking

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This commit is contained in:
twinaphex 2015-02-26 20:39:10 +01:00
parent 99b5ae18df
commit 75ccb24bf4
1 changed files with 11 additions and 14 deletions
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25
libretro-common/formats/png/rpng_decode_common.h
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@ -272,15 +272,11 @@ error:
static int png_reverse_filter_wrapper(uint32_t *data, const struct png_ihdr *ihdr,
const uint8_t *inflate_buf, struct rpng_process_t *pngp,
const uint32_t *palette)
const uint32_t *palette, unsigned filter)
{
unsigned i, filter;
unsigned i;
begin:
if (!(pngp->h < ihdr->height))
return 1;
switch (*inflate_buf++)
switch (filter)
{
case 0: /* None */
memcpy(pngp->decoded_scanline, inflate_buf, pngp->pitch);
@ -346,12 +342,6 @@ begin:
memcpy(pngp->prev_scanline, pngp->decoded_scanline, pngp->pitch);
pngp->h++;
inflate_buf += pngp->pitch;
data += ihdr->width;
goto begin;
return 0;
}
@ -370,14 +360,21 @@ static bool png_reverse_filter(uint32_t *data, const struct png_ihdr *ihdr,
ret = 1;
if (pngp->h < ihdr->height)
{
unsigned filter = *inflate_buf++;
ret = png_reverse_filter_wrapper(data,
ihdr, inflate_buf, pngp, palette);
ihdr, inflate_buf, pngp, palette, filter);
}
if (ret == 1 || ret == -1)
{
png_reverse_filter_deinit(pngp);
break;
}
pngp->h++;
inflate_buf += pngp->pitch;
data += ihdr->width;
}while(1);
if (ret == 1)