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Start splitting up rpng_nbio_load_image_argb

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This commit is contained in:
twinaphex 2015-02-21 02:28:59 +01:00
parent 65ea11f7be
commit d2206b8ab2
1 changed files with 81 additions and 43 deletions
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124
libretro-common/formats/png/rpng_nbio.c
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@ -318,71 +318,109 @@ bool rpng_nbio_load_image_argb_process(struct rpng_t *rpng,
return true;
}
void rpng_nbio_load_image_free(struct rpng_t *rpng)
{
if (!rpng)
return;
nbio_free((struct nbio_t*)rpng->userdata);
if (rpng->idat_buf.data)
free(rpng->idat_buf.data);
if (rpng->inflate_buf)
free(rpng->inflate_buf);
if (rpng)
free(rpng);
}
struct rpng_t *rpng_nbio_load_image_argb_init(const char *path)
{
unsigned i;
char header[8];
size_t file_len;
bool looped = false;
struct nbio_t* nbread = NULL;
struct rpng_t *rpng = (struct rpng_t*)calloc(1, sizeof(struct rpng_t));
if (!rpng)
goto error;
rpng->userdata = (void*)nbio_open(path, NBIO_READ);
nbread = (struct nbio_t*)rpng->userdata;
if (!nbread)
goto error;
rpng->ptr = nbio_get_ptr(nbread, &file_len);
nbio_begin_read(nbread);
while (!nbio_iterate(nbread))
looped = true;
rpng->ptr = nbio_get_ptr(nbread, &file_len);
(void)looped;
rpng->buff_data = (uint8_t*)rpng->ptr;
for (i = 0; i < 8; i++)
header[i] = rpng->buff_data[i];
if (memcmp(header, png_magic, sizeof(png_magic)) != 0)
goto error;
rpng->buff_data += 8;
return rpng;
error:
if (rpng)
{
rpng->userdata = NULL;
free(rpng);
}
if (nbread)
nbio_free(nbread);
return NULL;
}
bool rpng_nbio_load_image_argb(const char *path, uint32_t **data,
unsigned *width, unsigned *height)
{
size_t file_len;
struct rpng_t rpng = {0};
bool ret = true;
struct nbio_t* nbread = (struct nbio_t*)rpng.userdata;
struct rpng_t *rpng = rpng_nbio_load_image_argb_init(path);
{
bool looped = false;
nbread = nbio_open(path, NBIO_READ);
rpng.ptr = nbio_get_ptr(nbread, &file_len);
nbio_begin_read(nbread);
while (!nbio_iterate(nbread))
looped=true;
rpng.ptr = nbio_get_ptr(nbread, &file_len);
(void)looped;
rpng.buff_data = (uint8_t*)rpng.ptr;
}
{
unsigned i;
char header[8];
for (i = 0; i < 8; i++)
header[i] = rpng.buff_data[i];
if (memcmp(header, png_magic, sizeof(png_magic)) != 0)
return false;
rpng.buff_data += 8;
}
if (!rpng)
GOTO_END_ERROR();
while (1)
{
if (!rpng_nbio_load_image_argb_iterate(
rpng.buff_data, rpng.palette, &rpng.ihdr,
&rpng))
rpng->buff_data, rpng->palette, &rpng->ihdr,
rpng))
break;
}
#if 0
fprintf(stderr, "has_ihdr: %d\n", rpng.has_ihdr);
fprintf(stderr, "has_idat: %d\n", rpng.has_idat);
fprintf(stderr, "has_iend: %d\n", rpng.has_iend);
fprintf(stderr, "has_ihdr: %d\n", rpng->has_ihdr);
fprintf(stderr, "has_idat: %d\n", rpng->has_idat);
fprintf(stderr, "has_iend: %d\n", rpng->has_iend);
#endif
if (!rpng.has_ihdr || !rpng.has_idat || !rpng.has_iend)
if (!rpng->has_ihdr || !rpng->has_idat || !rpng->has_iend)
GOTO_END_ERROR();
rpng_nbio_load_image_argb_process(&rpng,
&rpng.ihdr, data, rpng.palette,
rpng_nbio_load_image_argb_process(rpng,
&rpng->ihdr, data, rpng->palette,
width, height);
end:
nbio_free((struct nbio_t*)rpng.userdata);
rpng_nbio_load_image_free(rpng);
rpng = NULL;
if (!ret)
free(*data);
if (rpng.idat_buf.data)
free(rpng.idat_buf.data);
if (rpng.inflate_buf)
free(rpng.inflate_buf);
return ret;
}