X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=images%2Fimage.c;h=c741d3960c60301d61c97ac580402db36e146ce5;hb=d5fdccbecd2acde9a6e067b54fcd69b02f31a820;hp=e030a94745d9426ae8f29e33bee87cac3a239f5b;hpb=0a023d6e079bbfc4112347b6943bad80685e7265;p=libucw.git

diff --git a/images/image.c b/images/image.c
index e030a947..c741d396 100644
--- a/images/image.c
+++ b/images/image.c
@@ -9,64 +9,42 @@
 
 #undef LOCAL_DEBUG
 
-#include "lib/lib.h"
-#include "lib/mempool.h"
+#include "ucw/lib.h"
+#include "ucw/mempool.h"
 #include "images/images.h"
-#include <string.h>
-
-#define MAX_IMAGE_BYTES (1 << 30)
+#include "images/error.h"
+#include "images/color.h"
 
-void
-image_thread_init(struct image_thread *it)
-{
-  DBG("image_thread_init()");
-  bzero(it, sizeof(*it));
-  it->pool = mp_new(1024);
-}
-
-void
-image_thread_cleanup(struct image_thread *it)
-{
-  DBG("image_thread_cleanup()");
-  mp_delete(it->pool);
-}
+#include <string.h>
 
-void
-image_thread_err_format(struct image_thread *it, uns code, char *msg, ...)
+static inline uns
+flags_to_pixel_size(uns flags)
 {
-  va_list args;
-  va_start(args, msg);
-  it->err_code = code;
-  it->err_msg = mp_vprintf(it->pool, msg, args);
-  va_end(args);
+  uns pixel_size = color_space_channels[flags & IMAGE_COLOR_SPACE];
+  if (flags & IMAGE_ALPHA)
+    pixel_size++;
+  return pixel_size;
 }
 
 struct image *
-image_new(struct image_thread *it, uns cols, uns rows, uns flags, struct mempool *pool)
+image_new(struct image_context *ctx, uns cols, uns rows, uns flags, struct mempool *pool)
 {
   DBG("image_new(cols=%u rows=%u flags=0x%x pool=%p)", cols, rows, flags, pool);
   flags &= IMAGE_NEW_FLAGS;
   if (unlikely(!image_dimensions_valid(cols, rows)))
     {
-      image_thread_err_format(it, IMAGE_ERR_INVALID_DIMENSIONS, "Invalid image dimensions (%ux%u)", cols, rows);
+      IMAGE_ERROR(ctx, IMAGE_ERROR_INVALID_DIMENSIONS, "Invalid image dimensions (%ux%u)", cols, rows);
       return NULL;
     }
   struct image *img;
-  uns pixel_size, row_size, align;
-  switch (flags & IMAGE_COLOR_SPACE)
+  uns channels, pixel_size, row_pixels_size, row_size, align;
+  pixel_size = channels = flags_to_pixel_size(flags);
+  if (!channels || channels > 4)
     {
-      case COLOR_SPACE_GRAYSCALE:
-	pixel_size = 1;
-	break;
-      case COLOR_SPACE_RGB:
-	pixel_size = 3;
-	break;
-      default:
-	ASSERT(0);
+      IMAGE_ERROR(ctx, IMAGE_ERROR_INVALID_PIXEL_FORMAT, "Invalid number of color channels (%u)", channels);
+      return NULL;
     }
-  if (flags & IMAGE_ALPHA)
-    pixel_size++;
-  switch (pixel_size)
+  switch (channels)
     {
       case 1:
       case 2:
@@ -86,13 +64,13 @@ image_new(struct image_thread *it, uns cols, uns rows, uns flags, struct mempool
     align = pixel_size;
   else
     align = 1;
-  row_size = cols * pixel_size;
-  row_size = ALIGN(row_size, align);
+  row_pixels_size = cols * pixel_size;
+  row_size = ALIGN_TO(row_pixels_size, align);
   u64 image_size_64 = (u64)row_size * rows;
   u64 bytes_64 = image_size_64 + (sizeof(struct image) + IMAGE_SSE_ALIGN_SIZE - 1 + sizeof(uns));
-  if (unlikely(bytes_64 > MAX_IMAGE_BYTES))
+  if (unlikely(bytes_64 > image_max_bytes))
     {
-      image_thread_err(it, IMAGE_ERR_INVALID_DIMENSIONS, "Image does not fit in memory");
+      IMAGE_ERROR(ctx, IMAGE_ERROR_INVALID_DIMENSIONS, "Image does not fit in memory");
       return NULL;
     }
   if (pool)
@@ -106,29 +84,33 @@ image_new(struct image_thread *it, uns cols, uns rows, uns flags, struct mempool
   byte *p = (byte *)img + sizeof(struct image);
   img->pixels = ALIGN_PTR(p, IMAGE_SSE_ALIGN_SIZE);
   img->flags = flags;
+  img->channels = channels;
   img->pixel_size = pixel_size;
   img->cols = cols;
   img->rows = rows;
   img->row_size = row_size;
-  img->image_size = bytes_64;
+  img->row_pixels_size = row_pixels_size;
+  img->image_size = image_size_64;
   DBG("img=%p flags=0x%x pixel_size=%u row_size=%u image_size=%u pixels=%p",
     img, img->flags, img->pixel_size, img->row_size, img->image_size, img->pixels);
   return img;
 }
 
 struct image *
-image_clone(struct image_thread *it, struct image *src, uns flags, struct mempool *pool)
+image_clone(struct image_context *ctx, struct image *src, uns flags, struct mempool *pool)
 {
   DBG("image_clone(src=%p flags=0x%x pool=%p)", src, src->flags, pool);
   struct image *img;
   flags &= IMAGE_NEW_FLAGS & ~IMAGE_CHANNELS_FORMAT;
   flags |= src->flags & IMAGE_CHANNELS_FORMAT;
-  if (!(img = image_new(it, src->cols, src->rows, flags, pool)))
+  if (!(img = image_new(ctx, src->cols, src->rows, flags, pool)))
     return NULL;
+  ASSERT(src->channels == img->channels);
   if (img->image_size)
     {
       if (src->pixel_size != img->pixel_size) /* conversion between aligned and unaligned RGB */
         {
+	  ASSERT(src->channels == 3);
 #	  define IMAGE_WALK_PREFIX(x) walk_##x
 #         define IMAGE_WALK_INLINE
 #	  define IMAGE_WALK_IMAGE img
@@ -137,14 +119,13 @@ image_clone(struct image_thread *it, struct image *src, uns flags, struct mempoo
 #         define IMAGE_WALK_DO_STEP do{ walk_pos[0] = walk_sec_pos[0]; walk_pos[1] = walk_sec_pos[1]; walk_pos[2] = walk_sec_pos[2]; }while(0)
 #         include "images/image-walk.h"
 	}
-      else if (src->row_size != img->row_size)
+      else if (src->row_size != img->row_size || ((img->flags | src->flags) & IMAGE_GAPS_PROTECTED))
         {
           byte *s = src->pixels;
           byte *d = img->pixels;
-          uns bytes = src->cols * img->pixel_size;
 	  for (uns row = src->rows; row--; )
             {
-	      memcpy(d, s, bytes);
+	      memcpy(d, s, src->row_pixels_size);
 	      d += img->row_size;
 	      s += src->row_size;
 	    }
@@ -164,86 +145,83 @@ image_destroy(struct image *img)
 }
 
 void
-image_clear(struct image_thread *it UNUSED, struct image *img)
+image_clear(struct image_context *ctx UNUSED, struct image *img)
 {
   DBG("image_clear(img=%p)", img);
   if (img->image_size)
-    bzero(img->pixels, img->image_size);
+    if (img->flags & IMAGE_GAPS_PROTECTED)
+      {
+        byte *p = img->pixels;
+        uns bytes = img->cols * img->pixel_size;
+	for (uns row = img->rows; row--; p += img->row_size)
+	  bzero(p, bytes);
+      }
+    else
+      bzero(img->pixels, img->image_size);
 }
 
-int
-image_init_matrix(struct image_thread *it, struct image *img, byte *pixels, uns cols, uns rows, uns row_size, uns flags)
+struct image *
+image_init_matrix(struct image_context *ctx, struct image *img, byte *pixels, uns cols, uns rows, uns row_size, uns flags)
 {
-  DBG("image_init_matrix(img=%p cols=%u rows=%u row_size=%u flags=0x%x)", img, cols, rows, row_size, uns flags);
+  DBG("image_init_matrix(img=%p pixels=%p cols=%u rows=%u row_size=%u flags=0x%x)", img, pixels, cols, rows, row_size, flags);
   if (unlikely(!image_dimensions_valid(cols, rows)))
     {
-      image_thread_err_format(it, IMAGE_ERR_INVALID_DIMENSIONS, "Invalid image dimensions (%ux%u)", cols, rows);
-      return 0;
+      IMAGE_ERROR(ctx, IMAGE_ERROR_INVALID_DIMENSIONS, "Invalid image dimensions (%ux%u)", cols, rows);
+      return NULL;
     }
   img->pixels = pixels;
   img->cols = cols;
   img->rows = rows;
+  img->pixel_size = img->channels = flags_to_pixel_size(flags);
   img->row_size = row_size;
+  img->row_pixels_size = cols * img->pixel_size;
   img->image_size = rows * row_size;
   img->flags = flags & (IMAGE_NEW_FLAGS | IMAGE_GAPS_PROTECTED);
-  return 1;
+  return img;
 }
 
-int
-image_init_subimage(struct image_thread *it UNUSED, struct image *img, struct image *src, uns left, uns top, uns cols, uns rows)
+struct image *
+image_init_subimage(struct image_context *ctx UNUSED, struct image *img, struct image *src, uns left, uns top, uns cols, uns rows)
 {
-  DBG("image_init_subimage(img=%p src=%p left=%u top=%u cols=%u rows=%u)");
+  DBG("image_init_subimage(img=%p src=%p left=%u top=%u cols=%u rows=%u)", img, src, left, top, cols, rows);
   ASSERT(left + cols <= src->cols && top + rows <= src->rows);
   img->pixels = src->pixels + left * src->pixel_size + top * src->row_size;
   img->cols = cols;
   img->rows = rows;
+  img->pixel_size = img->channels = src->pixel_size;
   img->row_size = src->row_size;
+  img->row_pixels_size = cols * src->pixel_size;
   img->image_size = src->row_size * rows;
   img->flags = src->flags & IMAGE_NEW_FLAGS;
   img->flags |= IMAGE_GAPS_PROTECTED;
-  return 1;
-}
-
-byte *
-color_space_to_name(enum color_space cs)
-{
-  return image_channels_format_to_name(cs);
+  return img;
 }
 
 byte *
-image_channels_format_to_name(uns format)
+image_channels_format_to_name(uns format, byte *buf)
 {
-  switch (format)
-    {
-      case COLOR_SPACE_GRAYSCALE:
-	return "Gray";
-      case COLOR_SPACE_GRAYSCALE | IMAGE_ALPHA:
-	return "GrayAlpha";
-      case COLOR_SPACE_RGB:
-	return "RGB";
-      case COLOR_SPACE_RGB | IMAGE_ALPHA:
-	return "RGBAlpha";
-      default:
-	return NULL;
-    }
+  byte *cs_name = color_space_id_to_name(format & IMAGE_COLOR_SPACE);
+  uns l = strlen(cs_name);
+  memcpy(buf, cs_name, l + 1);
+  if (format & IMAGE_ALPHA)
+    strcpy(buf + l, "+Alpha");
+  return buf;
 }
 
 uns
 image_name_to_channels_format(byte *name)
 {
-  if (!strcasecmp(name, "gray"))
-    return COLOR_SPACE_GRAYSCALE;
-  if (!strcasecmp(name, "grayscale"))
-    return COLOR_SPACE_GRAYSCALE;
-  if (!strcasecmp(name, "grayalpha"))
-    return COLOR_SPACE_GRAYSCALE | IMAGE_ALPHA;
-  if (!strcasecmp(name, "grayscalealpha"))
-    return COLOR_SPACE_GRAYSCALE | IMAGE_ALPHA;
-  if (!strcasecmp(name, "rgb"))
-    return COLOR_SPACE_RGB;
-  if (!strcasecmp(name, "rgbalpha"))
-    return COLOR_SPACE_RGB + IMAGE_ALPHA;
-  if (!strcasecmp(name, "rgba"))
-    return COLOR_SPACE_RGB + IMAGE_ALPHA;
+  uns i;
+  if (i = color_space_name_to_id(name))
+    return i;
+  uns l = strlen(name);
+  if (l > 6 && !strcasecmp(name + l - 5, "+alpha"))
+    {
+      byte buf[l + 1];
+      memcpy(buf, name, l - 6);
+      buf[l - 6] = 0;
+      if (i = color_space_name_to_id(name))
+	return i;
+    }
   return 0;
 }