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make generic loader 2 stage (head + data) 

SVN revision: 58927
This commit is contained in:
Carsten Haitzler 2011-04-26 09:41:07 +00:00
parent cb561612f2
commit 54f2389187
1 changed files with 80 additions and 56 deletions
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136
legacy/evas/src/modules/loaders/generic/evas_image_load_generic.c
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@ -102,7 +102,7 @@ dotcat(char *dest, const char *src)
}
static Eina_Bool
evas_image_load_file_head_generic(Image_Entry *ie, const char *file, const char *key, int *error)
_load(Image_Entry *ie, const char *file, const char *key, int *error, Eina_Bool get_data)
{
Eina_Bool res = EINA_FALSE;
int w = 0, h = 0, alpha = 0;
@ -185,6 +185,10 @@ evas_image_load_file_head_generic(Image_Entry *ie, const char *file, const char
// filename first arg
len = strlen(cmd);
escape_copy(file, cmd + len);
if (!get_data)
{
strcat(cmd, " -head ");
}
if (key)
{
strcat(cmd, " -key ");
@ -265,6 +269,11 @@ evas_image_load_file_head_generic(Image_Entry *ie, const char *file, const char
read_data = 1;
goto getdata;
}
else if (!strncmp(buf, "done", 4))
{
read_data = 2;
goto getdata;
}
}
}
getdata:
@ -279,67 +288,79 @@ getdata:
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto on_error;
}
body = evas_cache_image_pixels(ie);
if (body)
{
if ((w != (int)ie->w) || (h != (int)ie->h))
{
*error = EVAS_LOAD_ERROR_CORRUPT_FILE;
goto on_error;
}
}
if (alpha) ie->flags.alpha = 1;
ie->w = w;
ie->h = h;
evas_cache_image_surface_alloc(ie, ie->w, ie->h);
body = evas_cache_image_pixels(ie);
if (!body)
if (get_data)
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto on_error;
}
if ((tmpfname) || (shmfname))
{
int fd = -1;
// open
if (tmpfname)
fd = open(tmpfname, O_RDONLY, S_IRUSR);
#ifdef HAVE_SHM_OPEN
else if (shmfname)
fd = shm_open(shmfname, O_RDONLY, S_IRUSR);
#endif
if (fd >= 0)
{
void *addr;
// mmap
addr = mmap(NULL, w * h * sizeof(DATA32),
PROT_READ, MAP_SHARED, fd, 0);
if (addr != MAP_FAILED)
{
memcpy(body, addr, w * h * sizeof(DATA32));
munmap(addr, w * h * sizeof(DATA32));
}
// close
if (tmpfname)
{
close(fd);
unlink(tmpfname);
}
#ifdef HAVE_SHM_OPEN
else if (shmfname)
{
close(fd);
shm_unlink(shmfname);
}
#endif
}
else
if (!body) evas_cache_image_surface_alloc(ie, ie->w, ie->h);
body = evas_cache_image_pixels(ie);
if (!body)
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto on_error;
}
}
else if (read_data)
{
if (fread(body, w * h * sizeof(DATA32), 1, f) != 1)
if ((tmpfname) || (shmfname))
{
*error = EVAS_LOAD_ERROR_CORRUPT_FILE;
goto on_error;
int fd = -1;
// open
if (tmpfname)
fd = open(tmpfname, O_RDONLY, S_IRUSR);
#ifdef HAVE_SHM_OPEN
else if (shmfname)
fd = shm_open(shmfname, O_RDONLY, S_IRUSR);
#endif
if (fd >= 0)
{
void *addr;
// mmap
addr = mmap(NULL, w * h * sizeof(DATA32),
PROT_READ, MAP_SHARED, fd, 0);
if (addr != MAP_FAILED)
{
memcpy(body, addr, w * h * sizeof(DATA32));
munmap(addr, w * h * sizeof(DATA32));
}
// close
if (tmpfname)
{
close(fd);
unlink(tmpfname);
}
#ifdef HAVE_SHM_OPEN
else if (shmfname)
{
close(fd);
shm_unlink(shmfname);
}
#endif
}
else
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto on_error;
}
}
else if (read_data)
{
if (fread(body, w * h * sizeof(DATA32), 1, f) != 1)
{
*error = EVAS_LOAD_ERROR_CORRUPT_FILE;
goto on_error;
}
}
}
@ -351,16 +372,19 @@ getdata:
return res;
}
static Eina_Bool
evas_image_load_file_head_generic(Image_Entry *ie, const char *file, const char *key, int *error)
{
return _load(ie, file, key, error, EINA_FALSE);
}
static Eina_Bool
evas_image_load_file_data_generic(Image_Entry *ie, const char *file, const char *key, int *error)
{
DATA32 *body;
body = evas_cache_image_pixels(ie);
if (!body)
{
return evas_image_load_file_head_generic(ie, file, key, error);
}
if (!body) return _load(ie, file, key, error, EINA_TRUE);
*error = EVAS_LOAD_ERROR_NONE;
return EINA_TRUE;
}