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efl/src/lib/ector/software/ector_software_buffer.c

327 lines
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C
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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "Ector_Software.h"
#include "ector_private.h"
#include "ector_software_private.h"
#include "ector_buffer.h"
#include "draw.h"
#define MY_CLASS ECTOR_SOFTWARE_BUFFER_CLASS
typedef struct _Ector_Software_Buffer_Map
{
EINA_INLIST;
uint8_t *ptr;
unsigned int size, stride; // in bytes
unsigned int x, y, w, h;
Efl_Gfx_Colorspace cspace;
Eina_Bool allocated;
Ector_Buffer_Access_Flag mode;
} Ector_Software_Buffer_Map;
/* FIXME: Conversion routines don't belong here */
static inline void
_pixels_argb_to_gry8_convert(uint8_t *dst, const uint32_t *src, int len)
{
int k;
for (k = 0; k < len; k++)
{
const uint32_t *s = src++;
*dst++ = A_VAL(s);
}
}
static inline void
_pixels_gry8_to_argb_convert(uint32_t *dst, const uint8_t *src, int len)
{
int k;
for (k = 0; k < len; k++)
{
uint8_t s = *src++;
*dst++ = DRAW_ARGB_JOIN(s, s, s, s);
}
}
EOLIAN static void
_ector_software_buffer_base_pixels_clear(Eo *obj EINA_UNUSED, Ector_Software_Buffer_Base_Data *pd)
{
if (!pd->pixels.u8) return;
if (pd->internal.maps)
{
ERR("Can not call pixels_clear when the buffer is mapped.");
return;
}
//TODO: Neccessary?
// efl_event_callback_call(obj, ECTOR_BUFFER_EVENT_DETACHED, pd->pixels.u8);
if (!pd->nofree) free(pd->pixels.u8);
pd->pixels.u8 = NULL;
pd->nofree = EINA_FALSE;
}
EOLIAN static Eina_Bool
_ector_software_buffer_base_ector_buffer_pixels_get(Eo *obj EINA_UNUSED, Ector_Software_Buffer_Base_Data *pd,
void **pixels, int* width, int* height, int* stride)
{
if (*pixels) *pixels = pd->pixels.u8;
if (*width) *width = pd->generic->w;
if (*height) *height = pd->generic->h;
if (*stride) *stride = pd->stride;
return pd->writable;
}
EOLIAN static Eina_Bool
_ector_software_buffer_base_ector_buffer_pixels_set(Eo *obj, Ector_Software_Buffer_Base_Data *pd,
void *pixels, int width, int height, int stride,
Efl_Gfx_Colorspace cspace, Eina_Bool writable)
{
unsigned int pxs;
#if 0
if (pd->generic->immutable)
{
ERR("This buffer is immutable.");
return EINA_FALSE;
}
#endif
if (pd->internal.maps) return EINA_FALSE;
if (cspace == EFL_GFX_COLORSPACE_ARGB8888) pxs = 4;
else if (cspace == EFL_GFX_COLORSPACE_GRY8) pxs = 1;
else return EINA_FALSE;
if (stride == 0) stride = width * pxs;
else if (stride < (int)(width * pxs)) return EINA_FALSE;
if (pd->pixels.u8 && (pd->pixels.u8 != pixels))
_ector_software_buffer_base_pixels_clear(obj, pd);
if (pixels)
{
pd->pixels.u8 = pixels;
pd->nofree = EINA_TRUE;
pd->writable = !!writable;
}
else if (stride > 0 && height > 0)
{
pd->pixels.u8 = calloc(stride * height, 1);
pd->nofree = EINA_FALSE;
pd->writable = EINA_TRUE;
}
pd->generic->w = width;
pd->generic->h = height;
pd->generic->cspace = cspace;
pd->stride = stride;
pd->pixel_size = pxs;
return EINA_TRUE;
}
EOLIAN static void *
_ector_software_buffer_base_ector_buffer_map(Eo *obj EINA_UNUSED, Ector_Software_Buffer_Base_Data *pd,
unsigned int *length, Ector_Buffer_Access_Flag mode,
unsigned int x, unsigned int y, unsigned int w, unsigned int h,
Efl_Gfx_Colorspace cspace EINA_UNUSED, unsigned int *stride)
{
Ector_Software_Buffer_Map *map = NULL;
Eina_Bool need_cow = EINA_FALSE;
unsigned int off, k, dst_stride, pxs, pxs_dest;
if (!w) w = pd->generic->w;
if (!h) h = pd->generic->h;
if (!pd->pixels.u8 || !pd->stride) goto on_fail;
if (((x + w) > pd->generic->w) || (y + h > pd->generic->h))
{
ERR("Invalid region requested: wanted %u,%u %ux%u but image is %ux%u",
x, y, w, h, pd->generic->w, pd->generic->h);
goto on_fail;
}
if ((mode & ECTOR_BUFFER_ACCESS_FLAG_WRITE) && !pd->writable)
{
ERR("Can not map a read-only buffer for writing");
goto on_fail;
}
pxs = (pd->generic->cspace == EFL_GFX_COLORSPACE_ARGB8888) ? 4 : 1;
if (cspace == EFL_GFX_COLORSPACE_ARGB8888) pxs_dest = 4;
else if (cspace == EFL_GFX_COLORSPACE_GRY8) pxs_dest = 1;
else
{
ERR("Unsupported colorspace: %u", cspace);
goto on_fail;
}
if ((mode & ECTOR_BUFFER_ACCESS_FLAG_WRITE) &&
(mode & ECTOR_BUFFER_ACCESS_FLAG_COW))
{
EINA_INLIST_FOREACH(pd->internal.maps, map)
if (map->mode == ECTOR_BUFFER_ACCESS_FLAG_READ)
{
need_cow = EINA_TRUE;
break;
}
}
map = calloc(1, sizeof(Ector_Software_Buffer_Map));
if (!map) goto on_fail;
off = (pxs * x) + (pd->stride * y);
dst_stride = w * pxs_dest;
map->mode = mode;
map->cspace = cspace;
map->stride = dst_stride;
map->x = x;
map->y = y;
map->w = w;
map->h = h;
if (cspace != pd->generic->cspace)
{
// convert on the fly
map->size = w * h * pxs_dest;
map->allocated = EINA_TRUE;
map->ptr = malloc(map->size);
if (!map->ptr) goto on_fail;
if (cspace == EFL_GFX_COLORSPACE_ARGB8888)
{
for (k = 0; k < h; k++)
_pixels_gry8_to_argb_convert((uint32_t *) map->ptr + (k * w), pd->pixels.u8 + off + (k * pd->stride), w);
}
else
{
for (k = 0; k < h; k++)
_pixels_argb_to_gry8_convert(map->ptr + (k * w), (uint32_t *) (pd->pixels.u8 + off + (k * pd->stride)), w);
}
}
else if (need_cow)
{
// copy-on-write access
map->size = w * h * pxs_dest;
map->allocated = EINA_TRUE;
map->ptr = malloc(map->size);
if (!map->ptr) goto on_fail;
for (k = 0; k < h; k++)
memcpy(map->ptr + k * dst_stride, pd->pixels.u8 + x + (k + y) * pd->stride, dst_stride);
}
else
{
// direct access, zero-copy
map->size = (pd->stride * h) - off;
map->ptr = pd->pixels.u8 + off;
dst_stride = pd->stride;
}
pd->internal.maps = eina_inlist_prepend(pd->internal.maps, EINA_INLIST_GET(map));
if (length) *length = map->size;
if (stride) *stride = dst_stride;
return map->ptr;
on_fail:
free(map);
if (length) *length = 0;
if (stride) *stride = 0;
return NULL;
}
EOLIAN static void
_ector_software_buffer_base_ector_buffer_unmap(Eo *obj EINA_UNUSED, Ector_Software_Buffer_Base_Data *pd,
void *data, unsigned int length)
{
Ector_Software_Buffer_Map *map;
if (!data) return;
EINA_INLIST_FOREACH(pd->internal.maps, map)
{
if ((map->ptr == data) && ((map->size == length) || (length == (unsigned int) -1)))
{
pd->internal.maps = eina_inlist_remove(pd->internal.maps, EINA_INLIST_GET(map));
if (map->allocated)
{
if (map->mode & ECTOR_BUFFER_ACCESS_FLAG_WRITE)
{
unsigned k;
if (map->cspace != pd->generic->cspace)
{
if (pd->generic->cspace == EFL_GFX_COLORSPACE_ARGB8888)
{
for (k = 0; k < map->h; k++)
_pixels_gry8_to_argb_convert((uint32_t *) (pd->pixels.u8 + (k + map->y) * pd->stride),
map->ptr + (k * map->w),
map->w);
}
else
{
for (k = 0; k < map->h; k++)
_pixels_argb_to_gry8_convert(pd->pixels.u8 + (k + map->y) * pd->stride,
(uint32_t *) map->ptr + (k * map->w),
map->w);
}
}
else
{
for (k = 0; k < map->h; k++)
{
memcpy(pd->pixels.u8 + map->x + (k + map->y) * pd->stride,
map->ptr + k * map->stride, map->stride);
}
}
}
free(map->ptr);
}
free(map);
return;
}
}
CRI("Tried to unmap a non-mapped region!");
}
EOLIAN static Ector_Buffer_Flag
_ector_software_buffer_base_ector_buffer_flags_get(const Eo *obj EINA_UNUSED, Ector_Software_Buffer_Base_Data *pd)
{
return ECTOR_BUFFER_FLAG_CPU_READABLE |
ECTOR_BUFFER_FLAG_DRAWABLE |
ECTOR_BUFFER_FLAG_CPU_READABLE_FAST |
(pd->writable ? (ECTOR_BUFFER_FLAG_CPU_WRITABLE |
ECTOR_BUFFER_FLAG_RENDERABLE |
ECTOR_BUFFER_FLAG_CPU_WRITABLE_FAST)
: 0);
}
EOLIAN static Efl_Object *
_ector_software_buffer_efl_object_constructor(Eo *obj, void *data EINA_UNUSED)
{
Ector_Software_Buffer_Base_Data *pd;
obj = efl_constructor(efl_super(obj, MY_CLASS));
pd = efl_data_scope_get(obj, ECTOR_SOFTWARE_BUFFER_BASE_MIXIN);
pd->generic = efl_data_ref(obj, ECTOR_BUFFER_MIXIN);
pd->generic->eo = obj;
return obj;
}
EOLIAN static void
_ector_software_buffer_efl_object_destructor(Eo *obj, void *data EINA_UNUSED)
{
Ector_Software_Buffer_Base_Data *pd = efl_data_scope_get(obj, ECTOR_SOFTWARE_BUFFER_BASE_MIXIN);
_ector_software_buffer_base_pixels_clear(obj, pd);
efl_data_unref(obj, pd->generic);
efl_destructor(efl_super(obj, MY_CLASS));
if (pd->internal.maps)
ERR("Pixel data is still mapped during destroy!");
}
#include "ector_software_buffer.eo.c"
#include "ector_software_buffer_base.eo.c"
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