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[djvu] Do not alloc image buffer, let cairo do that

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This commit is contained in:
Carlos Garcia Campos 2010-02-21 15:35:35 +01:00
parent 61262e4b30
commit 8521bad72c
1 changed files with 8 additions and 14 deletions
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22
backend/djvu/djvu-document.c
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@ -323,7 +323,6 @@ djvu_document_render (EvDocument *document,
ddjvu_page_t *d_page;
ddjvu_page_rotation_t rotation;
double page_width, page_height, tmp;
static const cairo_user_data_key_t key;
d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page->index);
@ -355,19 +354,12 @@ djvu_document_render (EvDocument *document,
default:
rotation = DDJVU_ROTATE_0;
}
#ifdef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH
rowstride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, page_width);
#else
rowstride = page_width * 4;
#endif
pixels = (gchar *) g_malloc (page_height * rowstride);
surface = cairo_image_surface_create_for_data ((guchar *)pixels,
CAIRO_FORMAT_RGB24,
page_width,
page_height,
rowstride);
cairo_surface_set_user_data (surface, &key,
pixels, (cairo_destroy_func_t)g_free);
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
page_width, page_height);
rowstride = cairo_image_surface_get_stride (surface);
pixels = (gchar *)cairo_image_surface_get_data (surface);
prect.x = 0;
prect.y = 0;
prect.w = page_width;
@ -383,6 +375,8 @@ djvu_document_render (EvDocument *document,
rowstride,
pixels);
cairo_surface_mark_dirty (surface);
return surface;
}