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Cleanup of pic.c

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1. Report the true size of the document cache (0).
2. Cut down the number of pointer dereferences in drawPage().
This commit is contained in:
Tigran Aivazian 2012-10-13 09:39:34 +01:00
parent 081172a2ae
commit 56946f7393
1 changed files with 8 additions and 5 deletions
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13
pic.c
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@ -37,7 +37,9 @@ typedef struct PicDocument {
} PicDocument;
typedef struct PicPage {
int width, height;
int width;
int height;
uint8_t *image;
PicDocument *doc;
} PicPage;
@ -103,6 +105,7 @@ static int openPage(lua_State *L) {
page->width = doc->width;
page->height = doc->height;
page->image = doc->image;
page->doc = doc;
return 1;
@ -148,8 +151,8 @@ static int drawPage(lua_State *L) {
int x_offset = MAX(0, dc->offset_x);
int y_offset = MAX(0, dc->offset_y);
int x, y;
int img_width = page->doc->width;
int img_height = page->doc->height;
int img_width = page->width;
int img_height = page->height;
int img_new_width = bb->w;
int img_new_height = bb->h;
unsigned char adjusted_low[16], adjusted_high[16];
@ -168,7 +171,7 @@ static int drawPage(lua_State *L) {
if (!scaled_image)
return 0;
scaleImage(scaled_image, page->doc->image, img_width, img_height, img_new_width, img_new_height);
scaleImage(scaled_image, page->image, img_width, img_height, img_new_width, img_new_height);
uint8_t *bbptr = bb->data;
uint8_t *pmptr = scaled_image;
@ -195,7 +198,7 @@ static int drawPage(lua_State *L) {
static int getCacheSize(lua_State *L) {
PicDocument *doc = (PicDocument*) luaL_checkudata(L, 1, "picdocument");
lua_pushnumber(L, doc->width * doc->height * doc->components);
lua_pushnumber(L, 0);
return 1;
}