Remove useless checks for NULL before freeing
[profile/ivi/pixman.git] / pixman / pixman-general.c
index cc95eab..2ccdfcd 100644 (file)
@@ -1,5 +1,10 @@
 /*
  * Copyright © 2009 Red Hat, Inc.
+ * Copyright © 2000 SuSE, Inc.
+ * Copyright © 2007 Red Hat, Inc.
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ *             2005 Lars Knoll & Zack Rusin, Trolltech
+ *             2008 Aaron Plattner, NVIDIA Corporation
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  * SOFTWARE.
  */
+#ifdef HAVE_CONFIG_H
 #include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "pixman-private.h"
 
 static void
-combine_32 (pixman_implementation_t *imp, pixman_op_t op,
-           uint32_t *dest, const uint32_t *src, const uint32_t *mask,
-           int width)
+general_src_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter)
 {
-    CombineFunc32 f = pixman_composeFunctions.combineU[op];
+    pixman_image_t *image = iter->image;
 
-    f (dest, src, mask, width);
+    if (image->type == SOLID)
+       _pixman_solid_fill_iter_init (image, iter);
+    else if (image->type == LINEAR)
+       _pixman_linear_gradient_iter_init (image, iter);
+    else if (image->type == RADIAL)
+       _pixman_radial_gradient_iter_init (image, iter);
+    else if (image->type == CONICAL)
+       _pixman_conical_gradient_iter_init (image, iter);
+    else if (image->type == BITS)
+       _pixman_bits_image_src_iter_init (image, iter);
+    else
+       _pixman_log_error (FUNC, "Pixman bug: unknown image type\n");
 }
 
 static void
-combine_64 (pixman_implementation_t *imp, pixman_op_t op,
-           uint64_t *dest, const uint64_t *src, const uint64_t *mask,
-           int width)
+general_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter)
 {
-    CombineFunc64 f = pixman_composeFunctions64.combineU[op];
-
-    f (dest, src, mask, width);
+    if (iter->image->type == BITS)
+    {
+       _pixman_bits_image_dest_iter_init (iter->image, iter);
+    }
+    else
+    {
+       _pixman_log_error (FUNC, "Trying to write to a non-writable image");
+    }
 }
 
+typedef struct op_info_t op_info_t;
+struct op_info_t
+{
+    uint8_t src, dst;
+};
+
+#define ITER_IGNORE_BOTH                                               \
+    (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_LOCALIZED_ALPHA)
+
+static const op_info_t op_flags[PIXMAN_N_OPERATORS] =
+{
+    /* Src                   Dst                   */
+    { ITER_IGNORE_BOTH,      ITER_IGNORE_BOTH      }, /* CLEAR */
+    { ITER_LOCALIZED_ALPHA,  ITER_IGNORE_BOTH      }, /* SRC */
+    { ITER_IGNORE_BOTH,      ITER_LOCALIZED_ALPHA  }, /* DST */
+    { 0,                     ITER_LOCALIZED_ALPHA  }, /* OVER */
+    { ITER_LOCALIZED_ALPHA,  0                     }, /* OVER_REVERSE */
+    { ITER_LOCALIZED_ALPHA,  ITER_IGNORE_RGB       }, /* IN */
+    { ITER_IGNORE_RGB,       ITER_LOCALIZED_ALPHA  }, /* IN_REVERSE */
+    { ITER_LOCALIZED_ALPHA,  ITER_IGNORE_RGB       }, /* OUT */
+    { ITER_IGNORE_RGB,       ITER_LOCALIZED_ALPHA  }, /* OUT_REVERSE */
+    { 0,                     0                     }, /* ATOP */
+    { 0,                     0                     }, /* ATOP_REVERSE */
+    { 0,                     0                     }, /* XOR */
+    { ITER_LOCALIZED_ALPHA,  ITER_LOCALIZED_ALPHA  }, /* ADD */
+    { 0,                     0                     }, /* SATURATE */
+};
+
+#define SCANLINE_BUFFER_LENGTH 8192
+
 static void
-combine_32_ca (pixman_implementation_t *imp, pixman_op_t op,
-              uint32_t *dest, const uint32_t *src, const uint32_t *mask,
-              int width)
+general_composite_rect  (pixman_implementation_t *imp,
+                         pixman_composite_info_t *info)
 {
-    CombineFunc32 f = pixman_composeFunctions.combineC[op];
+    PIXMAN_COMPOSITE_ARGS (info);
+    uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8];
+    uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
+    uint8_t *src_buffer, *mask_buffer, *dest_buffer;
+    pixman_iter_t src_iter, mask_iter, dest_iter;
+    pixman_combine_32_func_t compose;
+    pixman_bool_t component_alpha;
+    iter_flags_t narrow, src_flags;
+    int Bpp;
+    int i;
+
+    if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT)                &&
+       (!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
+       (dest_image->common.flags & FAST_PATH_NARROW_FORMAT))
+    {
+       narrow = ITER_NARROW;
+       Bpp = 4;
+    }
+    else
+    {
+       narrow = 0;
+       Bpp = 8;
+    }
+
+    if (width * Bpp > SCANLINE_BUFFER_LENGTH)
+    {
+       scanline_buffer = pixman_malloc_abc (width, 3, Bpp);
+
+       if (!scanline_buffer)
+           return;
+    }
+
+    src_buffer = scanline_buffer;
+    mask_buffer = src_buffer + width * Bpp;
+    dest_buffer = mask_buffer + width * Bpp;
+
+    /* src iter */
+    src_flags = narrow | op_flags[op].src;
+
+    _pixman_implementation_src_iter_init (imp->toplevel, &src_iter, src_image,
+                                         src_x, src_y, width, height,
+                                         src_buffer, src_flags);
+
+    /* mask iter */
+    if ((src_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
+       (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
+    {
+       /* If it doesn't matter what the source is, then it doesn't matter
+        * what the mask is
+        */
+       mask_image = NULL;
+    }
 
-    f (dest, src, mask, width);
+    component_alpha =
+        mask_image                           &&
+        mask_image->common.type == BITS       &&
+        mask_image->common.component_alpha    &&
+        PIXMAN_FORMAT_RGB (mask_image->bits.format);
+
+    _pixman_implementation_src_iter_init (
+       imp->toplevel, &mask_iter, mask_image, mask_x, mask_y, width, height,
+       mask_buffer, narrow | (component_alpha? 0 : ITER_IGNORE_RGB));
+
+    /* dest iter */
+    _pixman_implementation_dest_iter_init (
+       imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
+       dest_buffer, narrow | op_flags[op].dst);
+
+    if (narrow)
+    {
+       if (component_alpha)
+           compose = _pixman_implementation_combine_32_ca;
+       else
+           compose = _pixman_implementation_combine_32;
+    }
+    else
+    {
+       if (component_alpha)
+           compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64_ca;
+       else
+           compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64;
+    }
+
+    if (!compose)
+       return;
+
+    for (i = 0; i < height; ++i)
+    {
+       uint32_t *s, *m, *d;
+
+       m = mask_iter.get_scanline (&mask_iter, NULL);
+       s = src_iter.get_scanline (&src_iter, m);
+       d = dest_iter.get_scanline (&dest_iter, NULL);
+
+       compose (imp->toplevel, op, d, s, m, width);
+
+       dest_iter.write_back (&dest_iter);
+    }
+
+    if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
+       free (scanline_buffer);
 }
 
-static void
-combine_64_ca (pixman_implementation_t *imp, pixman_op_t op,
-           uint64_t *dest, const uint64_t *src, const uint64_t *mask,
-           int width)
+static const pixman_fast_path_t general_fast_path[] =
 {
-    CombineFunc64 f = pixman_composeFunctions64.combineC[op];
+    { PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any,        0, PIXMAN_any, 0, general_composite_rect },
+    { PIXMAN_OP_NONE }
+};
 
-    f (dest, src, mask, width);
+static pixman_bool_t
+general_blt (pixman_implementation_t *imp,
+             uint32_t *               src_bits,
+             uint32_t *               dst_bits,
+             int                      src_stride,
+             int                      dst_stride,
+             int                      src_bpp,
+             int                      dst_bpp,
+             int                      src_x,
+             int                      src_y,
+             int                      dest_x,
+             int                      dest_y,
+             int                      width,
+             int                      height)
+{
+    /* We can't blit unless we have sse2 or mmx */
+
+    return FALSE;
+}
+
+static pixman_bool_t
+general_fill (pixman_implementation_t *imp,
+              uint32_t *               bits,
+              int                      stride,
+              int                      bpp,
+              int                      x,
+              int                      y,
+              int                      width,
+              int                      height,
+              uint32_t xor)
+{
+    return FALSE;
 }
 
 pixman_implementation_t *
-_pixman_implementation_create_general (pixman_implementation_t *toplevel)
+_pixman_implementation_create_general (void)
 {
-    pixman_implementation_t *imp = _pixman_implementation_create (toplevel, NULL);
-    int i;
+    pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path);
 
-    for (i = 0; i < PIXMAN_OP_LAST; ++i)
-    {
-       imp->combine_32[i] = combine_32;
-       imp->combine_64[i] = combine_64;
-       imp->combine_32_ca[i] = combine_32_ca;
-       imp->combine_64_ca[i] = combine_64_ca;
-    }
+    _pixman_setup_combiner_functions_32 (imp);
+    _pixman_setup_combiner_functions_64 (imp);
+
+    imp->blt = general_blt;
+    imp->fill = general_fill;
+    imp->src_iter_init = general_src_iter_init;
+    imp->dest_iter_init = general_dest_iter_init;
 
     return imp;
 }
+