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