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(svn r23889) -Codechange: Centralise sprite resizing in one place. (peter1138)

release/1.2
michi_cc 2012-02-04 13:29:13 +00:00
parent 2909e39e99
commit e85d5b5d31
9 changed files with 257 additions and 151 deletions
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54
src/blitter/32bpp_optimized.cpp
View File

@ -207,55 +207,6 @@ void Blitter_32bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode,
}
}
/**
* Resizes the sprite in a very simple way, takes every n-th pixel and every n-th row
*
* @param sprite_src sprite to resize
* @param zoom resizing scale
* @return resized sprite
*/
static const SpriteLoader::Sprite *ResizeSprite(const SpriteLoader::Sprite *sprite_src, ZoomLevel zoom)
{
SpriteLoader::Sprite *sprite = MallocT<SpriteLoader::Sprite>(1);
if (zoom == ZOOM_LVL_NORMAL) {
memcpy(sprite, sprite_src, sizeof(*sprite));
uint size = sprite_src->height * sprite_src->width;
sprite->data = MallocT<SpriteLoader::CommonPixel>(size);
memcpy(sprite->data, sprite_src->data, size * sizeof(SpriteLoader::CommonPixel));
return sprite;
}
sprite->height = UnScaleByZoom(sprite_src->height, zoom);
sprite->width = UnScaleByZoom(sprite_src->width, zoom);
sprite->x_offs = UnScaleByZoom(sprite_src->x_offs, zoom);
sprite->y_offs = UnScaleByZoom(sprite_src->y_offs, zoom);
uint size = sprite->height * sprite->width;
SpriteLoader::CommonPixel *dst = sprite->data = CallocT<SpriteLoader::CommonPixel>(size);
const SpriteLoader::CommonPixel *src = (SpriteLoader::CommonPixel *)sprite_src->data;
const SpriteLoader::CommonPixel *src_end = src + sprite_src->height * sprite_src->width;
uint scaled_1 = ScaleByZoom(1, zoom);
for (uint y = 0; y < sprite->height; y++) {
if (src >= src_end) src = src_end - sprite_src->width;
const SpriteLoader::CommonPixel *src_ln = src + sprite_src->width * scaled_1;
for (uint x = 0; x < sprite->width; x++) {
if (src >= src_ln) src = src_ln - 1;
*dst = *src;
dst++;
src += scaled_1;
}
src = src_ln;
}
return sprite;
}
Sprite *Blitter_32bppOptimized::Encode(SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
{
/* streams of pixels (a, r, g, b channels)
@ -287,7 +238,7 @@ Sprite *Blitter_32bppOptimized::Encode(SpriteLoader::Sprite *sprite, AllocatorPr
}
for (ZoomLevel z = zoom_min; z <= zoom_max; z++) {
const SpriteLoader::Sprite *src_orig = ResizeSprite(sprite, z);
const SpriteLoader::Sprite *src_orig = &sprite[z];
uint size = src_orig->height * src_orig->width;
@ -371,9 +322,6 @@ Sprite *Blitter_32bppOptimized::Encode(SpriteLoader::Sprite *sprite, AllocatorPr
lengths[z][0] = (byte *)dst_px_ln - (byte *)dst_px_orig[z]; // all are aligned to 4B boundary
lengths[z][1] = (byte *)dst_n_ln - (byte *)dst_n_orig[z];
free(src_orig->data);
free(src_orig);
}
uint len = 0; // total length of data

19
src/blitter/8bpp_optimized.cpp
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@ -130,7 +130,7 @@ Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, AllocatorPro
}
for (ZoomLevel i = zoom_min; i <= zoom_max; i++) {
memory += UnScaleByZoom(sprite->height, i) * UnScaleByZoom(sprite->width, i);
memory += sprite[i].width * sprite[i].height;
}
/* We have no idea how much memory we really need, so just guess something */
@ -150,9 +150,8 @@ Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, AllocatorPro
temp_dst->offset[i] = offset;
/* cache values, because compiler can't cache it */
int scaled_height = UnScaleByZoom(sprite->height, i);
int scaled_width = UnScaleByZoom(sprite->width, i);
int scaled_1 = ScaleByZoom(1, i);
int scaled_height = sprite[i].height;
int scaled_width = sprite[i].width;
for (int y = 0; y < scaled_height; y++) {
uint trans = 0;
@ -161,18 +160,10 @@ Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, AllocatorPro
byte *count_dst = NULL;
/* Store the scaled image */
const SpriteLoader::CommonPixel *src = &sprite->data[ScaleByZoom(y, i) * sprite->width];
const SpriteLoader::CommonPixel *src_end = &src[sprite->width];
const SpriteLoader::CommonPixel *src = &sprite[i].data[y * sprite[i].width];
for (int x = 0; x < scaled_width; x++) {
uint colour = 0;
/* Get the colour keeping in mind the zoom-level */
for (int j = 0; j < scaled_1; j++) {
if (src->m != 0) colour = src->m;
/* Because of the scaling it might happen we read outside the buffer. Avoid that. */
if (++src == src_end) break;
}
uint colour = src++->m;
if (last_colour == 0 || colour == 0 || pixels == 255) {
if (count_dst != NULL) {

2
src/fontcache.cpp
View File

@ -1152,7 +1152,7 @@ const Sprite *GetGlyph(FontSize size, WChar key)
if (width > 256 || height > 256) usererror("Font glyph is too large");
/* FreeType has rendered the glyph, now we allocate a sprite and copy the image into it */
sprite.AllocateData(width * height);
sprite.AllocateData(ZOOM_LVL_NORMAL, width * height);
sprite.type = ST_FONT;
sprite.width = width;
sprite.height = height;

215
src/spritecache.cpp
View File

@ -13,11 +13,14 @@
#include "fileio_func.h"
#include "spriteloader/grf.hpp"
#include "gfx_func.h"
#include "zoom_func.h"
#include "settings_type.h"
#ifdef WITH_PNG
#include "spriteloader/png.hpp"
#endif /* WITH_PNG */
#include "blitter/factory.hpp"
#include "core/math_func.hpp"
#include "core/mem_func.hpp"
#include "table/sprites.h"
#include "table/palette_convert.h"
@ -156,6 +159,177 @@ uint GetMaxSpriteID()
return _spritecache_items;
}
static bool ResizeSpriteIn(SpriteLoader::Sprite *sprite, ZoomLevel src, ZoomLevel tgt)
{
uint8 scaled_1 = UnScaleByZoom(1, (ZoomLevel)(tgt - src));
/* Check for possible memory overflow. */
if (sprite[src].width * scaled_1 > UINT16_MAX || sprite[src].height * scaled_1 > UINT16_MAX) return false;
sprite[tgt].width = sprite[src].width * scaled_1;
sprite[tgt].height = sprite[src].height * scaled_1;
sprite[tgt].x_offs = sprite[src].x_offs * scaled_1;
sprite[tgt].y_offs = sprite[src].y_offs * scaled_1;
sprite[tgt].AllocateData(tgt, sprite[tgt].width * sprite[tgt].height);
SpriteLoader::CommonPixel *dst = sprite[tgt].data;
for (int y = 0; y < sprite[tgt].height; y++) {
const SpriteLoader::CommonPixel *src_ln = &sprite[src].data[y / scaled_1 * sprite[src].width];
for (int x = 0; x < sprite[tgt].width; x++) {
*dst = src_ln[x / scaled_1];
dst++;
}
}
return true;
}
static void ResizeSpriteOut(SpriteLoader::Sprite *sprite, ZoomLevel zoom)
{
/* Algorithm based on 32bpp_Optimized::ResizeSprite() */
sprite[zoom].width = UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].width, zoom);
sprite[zoom].height = UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].height, zoom);
sprite[zoom].x_offs = UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].x_offs, zoom);
sprite[zoom].y_offs = UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].y_offs, zoom);
sprite[zoom].AllocateData(zoom, sprite[zoom].height * sprite[zoom].width);
SpriteLoader::CommonPixel *dst = sprite[zoom].data;
const SpriteLoader::CommonPixel *src = sprite[zoom - 1].data;
const SpriteLoader::CommonPixel *src_end = src + sprite[zoom - 1].height * sprite[zoom - 1].width;
for (uint y = 0; y < sprite[zoom].height; y++) {
if (src >= src_end) src = src_end - sprite[zoom - 1].width;
const SpriteLoader::CommonPixel *src_ln = src + sprite[zoom - 1].width * 2;
for (uint x = 0; x < sprite[zoom].width; x++) {
if (src >= src_ln) src = src_ln - 1;
if ((src + 1)->a != 0) { *dst = *(src + 1); }
else { *dst = *src; }
dst++;
src += 2;
}
src = src_ln;
}
}
static bool PadSingleSprite(SpriteLoader::Sprite *sprite, ZoomLevel zoom, uint pad_left, uint pad_top, uint pad_right, uint pad_bottom)
{
uint width = sprite->width + pad_left + pad_right;
uint height = sprite->height + pad_top + pad_bottom;
if (width > UINT16_MAX || height > UINT16_MAX) return false;
/* Copy source data and reallocate sprite memory. */
SpriteLoader::CommonPixel *src_data = MallocT<SpriteLoader::CommonPixel>(sprite->width * sprite->height);
MemCpyT(src_data, sprite->data, sprite->width * sprite->height);
sprite->AllocateData(zoom, width * height);
/* Copy with padding to destination. */
SpriteLoader::CommonPixel *src = src_data;
SpriteLoader::CommonPixel *data = sprite->data;
for (uint y = 0; y < height; y++) {
if (y < pad_top || pad_bottom + y >= height) {
/* Top/bottom padding. */
MemSetT(data, 0, width);
data += width;
} else {
if (pad_left > 0) {
/* Pad left. */
MemSetT(data, 0, pad_left);
data += pad_left;
}
/* Copy pixels. */
MemCpyT(data, src, sprite->width);
src += sprite->width;
data += sprite->width;
if (pad_right > 0) {
/* Pad right. */
MemSetT(data, 0, pad_right);
data += pad_right;
}
}
}
free(src_data);
/* Update sprite size. */
sprite->width = width;
sprite->height = height;
sprite->x_offs -= pad_left;
sprite->y_offs -= pad_top;
return true;
}
static bool PadSprites(SpriteLoader::Sprite *sprite, uint8 sprite_avail)
{
int left = sprite[ZOOM_LVL_NORMAL].x_offs;
int top = sprite[ZOOM_LVL_NORMAL].y_offs;
int right = sprite[ZOOM_LVL_NORMAL].x_offs + sprite[ZOOM_LVL_NORMAL].width;
int bottom = sprite[ZOOM_LVL_NORMAL].y_offs + sprite[ZOOM_LVL_NORMAL].height;
/* Find combined bounds of all zoom levels.*/
for (ZoomLevel zoom = ZOOM_LVL_OUT_2X; zoom != ZOOM_LVL_END; zoom++) {
if (HasBit(sprite_avail, zoom)) {
uint8 scaled_1 = ScaleByZoom(1, zoom);
left = min(left, sprite[zoom].x_offs * scaled_1);
top = min(top, sprite[zoom].y_offs * scaled_1);
right = max(right, (sprite[zoom].x_offs + sprite[zoom].width - 1) * scaled_1);
bottom = max(bottom, (sprite[zoom].y_offs + sprite[zoom].height - 1) * scaled_1);
}
}
/* Pad too small sprites. */
SetBit(sprite_avail, ZOOM_LVL_NORMAL);
for (ZoomLevel zoom = ZOOM_LVL_BEGIN; zoom != ZOOM_LVL_END; zoom++) {
if (HasBit(sprite_avail, zoom)) {
int pad_left = sprite[zoom].x_offs - UnScaleByZoom(left, zoom);
int pad_top = sprite[zoom].y_offs - UnScaleByZoom(top, zoom);
int pad_right = UnScaleByZoom(right, zoom) - (sprite[zoom].x_offs + sprite[zoom].width);
int pad_bottom = UnScaleByZoom(bottom, zoom) - (sprite[zoom].y_offs + sprite[zoom].height);
if (pad_left != 0 || pad_right != 0 || pad_top != 0 || pad_bottom != 0) {
if (!PadSingleSprite(&sprite[zoom], zoom, pad_left, pad_top, pad_right, pad_bottom)) return false;
}
}
}
return true;
}
static bool ResizeSprites(SpriteLoader::Sprite *sprite, uint8 sprite_avail, uint32 file_slot, uint32 file_pos)
{
/* Create a fully zoomed image if it does not exist */
ZoomLevel first_avail = static_cast<ZoomLevel>(FIND_FIRST_BIT(sprite_avail));
if (first_avail != ZOOM_LVL_NORMAL) {
if (!ResizeSpriteIn(sprite, first_avail, ZOOM_LVL_NORMAL)) return false;
}
/* Pad sprites to make sizes match. */
if (!PadSprites(sprite, sprite_avail)) return false;
/* Create other missing zoom levels */
for (ZoomLevel zoom = ZOOM_LVL_OUT_2X; zoom != ZOOM_LVL_END; zoom++) {
if (HasBit(sprite_avail, zoom)) {
/* Check that size and offsets match the fully zoomed image. */
assert(sprite[zoom].width == UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].width, zoom));
assert(sprite[zoom].height == UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].height, zoom));
assert(sprite[zoom].x_offs == UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].x_offs, zoom));
assert(sprite[zoom].y_offs == UnScaleByZoom(sprite[ZOOM_LVL_NORMAL].y_offs, zoom));
}
/* Zoom level is not available, or unusable, so create it */
if (!HasBit(sprite_avail, zoom)) ResizeSpriteOut(sprite, zoom);
}
return true;
}
/**
* Load a recolour sprite into memory.
* @param file_slot GRF we're reading from.
@ -208,15 +382,21 @@ static void *ReadSprite(const SpriteCache *sc, SpriteID id, SpriteType sprite_ty
DEBUG(sprite, 9, "Load sprite %d", id);
SpriteLoader::Sprite sprite[ZOOM_LVL_COUNT];
uint8 sprite_avail = 0;
sprite[ZOOM_LVL_NORMAL].type = sprite_type;
if (sprite_type == ST_NORMAL && BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() == 32) {
#ifdef WITH_PNG
/* Try loading 32bpp graphics in case we are 32bpp output */
SpriteLoaderPNG sprite_loader;
SpriteLoader::Sprite sprite;
sprite.type = sprite_type;
if (sprite_loader.LoadSprite(&sprite, file_slot, sc->id, sprite_type)) {
return BlitterFactoryBase::GetCurrentBlitter()->Encode(&sprite, allocator);
sprite_avail = sprite_loader.LoadSprite(sprite, file_slot, sc->id, sprite_type);
if (sprite_avail != 0) {
if (ResizeSprites(sprite, sprite_avail, file_slot, sc->id)) {
return BlitterFactoryBase::GetCurrentBlitter()->Encode(sprite, allocator);
}
}
/* If the PNG couldn't be loaded, fall back to 8bpp grfs */
#else
@ -229,10 +409,9 @@ static void *ReadSprite(const SpriteCache *sc, SpriteID id, SpriteType sprite_ty
}
SpriteLoaderGrf sprite_loader(sc->container_ver);
SpriteLoader::Sprite sprite;
sprite.type = sprite_type;
sprite_avail = sprite_loader.LoadSprite(sprite, file_slot, file_pos, sprite_type);
if (!sprite_loader.LoadSprite(&sprite, file_slot, file_pos, sprite_type)) {
if (sprite_avail == 0) {
if (sprite_type == ST_MAPGEN) return NULL;
if (id == SPR_IMG_QUERY) usererror("Okay... something went horribly wrong. I couldn't load the fallback sprite. What should I do?");
return (void*)GetRawSprite(SPR_IMG_QUERY, ST_NORMAL, allocator);
@ -248,15 +427,15 @@ static void *ReadSprite(const SpriteCache *sc, SpriteID id, SpriteType sprite_ty
* Ugly: yes. Other solution: no. Blame the original author or
* something ;) The image should really have been a data-stream
* (so type = 0xFF basicly). */
uint num = sprite.width * sprite.height;
uint num = sprite[ZOOM_LVL_NORMAL].width * sprite[ZOOM_LVL_NORMAL].height;
Sprite *s = (Sprite *)allocator(sizeof(*s) + num);
s->width = sprite.width;
s->height = sprite.height;
s->x_offs = sprite.x_offs;
s->y_offs = sprite.y_offs;
s->width = sprite[ZOOM_LVL_NORMAL].width;
s->height = sprite[ZOOM_LVL_NORMAL].height;
s->x_offs = sprite[ZOOM_LVL_NORMAL].x_offs;
s->y_offs = sprite[ZOOM_LVL_NORMAL].y_offs;
SpriteLoader::CommonPixel *src = sprite.data;
SpriteLoader::CommonPixel *src = sprite[ZOOM_LVL_NORMAL].data;
byte *dest = s->data;
while (num-- > 0) {
*dest++ = src->m;
@ -266,7 +445,13 @@ static void *ReadSprite(const SpriteCache *sc, SpriteID id, SpriteType sprite_ty
return s;
}
return BlitterFactoryBase::GetCurrentBlitter()->Encode(&sprite, allocator);
if (sprite_type == ST_NORMAL) {
if (!ResizeSprites(sprite, sprite_avail, file_slot, sc->id)) {
if (id == SPR_IMG_QUERY) usererror("Okay... something went horribly wrong. I couldn't resize the fallback sprite. What should I do?");
return (void*)GetRawSprite(SPR_IMG_QUERY, ST_NORMAL, allocator);
}
}
return BlitterFactoryBase::GetCurrentBlitter()->Encode(sprite, allocator);
}
@ -704,4 +889,4 @@ void GfxClearSpriteCache()
}
}
/* static */ ReusableBuffer<SpriteLoader::CommonPixel> SpriteLoader::Sprite::buffer;
/* static */ ReusableBuffer<SpriteLoader::CommonPixel> SpriteLoader::Sprite::buffer[ZOOM_LVL_COUNT];

73
src/spriteloader/grf.cpp
View File

@ -59,9 +59,10 @@ static bool WarnCorruptSprite(uint8 file_slot, size_t file_pos, int line)
* @param sprite_type Type of the sprite we're decoding.
* @param num Size of the decompressed sprite.
* @param type Type of the encoded sprite.
* @param zoom_lvl Requested zoom level.
* @return True if the sprite was successfully loaded.
*/
bool DecodeSingleSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type, int64 num, byte type)
bool DecodeSingleSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type, int64 num, byte type, ZoomLevel zoom_lvl)
{
AutoFreePtr<byte> dest_orig(MallocT<byte>(num));
byte *dest = dest_orig;
@ -96,7 +97,7 @@ bool DecodeSingleSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t fi
if (num != 0) return WarnCorruptSprite(file_slot, file_pos, __LINE__);
sprite->AllocateData(sprite->width * sprite->height * ZOOM_LVL_BASE * ZOOM_LVL_BASE);
sprite->AllocateData(zoom_lvl, sprite->width * sprite->height);
/* When there are transparency pixels, this format has another trick.. decode it */
if (type & 0x08) {
@ -161,22 +162,6 @@ bool DecodeSingleSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t fi
}
}
if (ZOOM_LVL_BASE != 1 && sprite_type == ST_NORMAL) {
/* Simple scaling, back-to-front so that no intermediate buffers are needed. */
int width = sprite->width * ZOOM_LVL_BASE;
int height = sprite->height * ZOOM_LVL_BASE;
for (int y = height - 1; y >= 0; y--) {
for (int x = width - 1; x >= 0; x--) {
sprite->data[y * width + x] = sprite->data[y / ZOOM_LVL_BASE * sprite->width + x / ZOOM_LVL_BASE];
}
}
sprite->width *= ZOOM_LVL_BASE;
sprite->height *= ZOOM_LVL_BASE;
sprite->x_offs *= ZOOM_LVL_BASE;
sprite->y_offs *= ZOOM_LVL_BASE;
}
/* Make sure to mark all transparent pixels transparent on the alpha channel too */
for (int i = 0; i < sprite->width * sprite->height; i++) {
if (sprite->data[i].m != 0) sprite->data[i].a = 0xFF;
@ -185,7 +170,7 @@ bool DecodeSingleSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t fi
return true;
}
bool LoadSpriteV1(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
uint8 LoadSpriteV1(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
{
/* Open the right file and go to the correct position */
FioSeekToFile(file_slot, file_pos);
@ -195,24 +180,28 @@ bool LoadSpriteV1(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos
byte type = FioReadByte();
/* Type 0xFF indicates either a colourmap or some other non-sprite info; we do not handle them here */
if (type == 0xFF) return false;
if (type == 0xFF) return 0;
sprite->height = FioReadByte();
sprite->width = FioReadWord();
sprite->x_offs = FioReadWord();
sprite->y_offs = FioReadWord();
ZoomLevel zoom_lvl = (sprite_type == ST_NORMAL) ? ZOOM_LVL_OUT_4X : ZOOM_LVL_NORMAL;
sprite[zoom_lvl].height = FioReadByte();
sprite[zoom_lvl].width = FioReadWord();
sprite[zoom_lvl].x_offs = FioReadWord();
sprite[zoom_lvl].y_offs = FioReadWord();
/* 0x02 indicates it is a compressed sprite, so we can't rely on 'num' to be valid.
* In case it is uncompressed, the size is 'num' - 8 (header-size). */
num = (type & 0x02) ? sprite->width * sprite->height : num - 8;
num = (type & 0x02) ? sprite[zoom_lvl].width * sprite[zoom_lvl].height : num - 8;
return DecodeSingleSprite(sprite, file_slot, file_pos, sprite_type, num, type);
if (DecodeSingleSprite(&sprite[zoom_lvl], file_slot, file_pos, sprite_type, num, type, zoom_lvl)) return 1 << zoom_lvl;
return 0;
}
bool LoadSpriteV2(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
uint8 LoadSpriteV2(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
{
/* Is the sprite not present/stripped in the GRF? */
if (file_pos == SIZE_MAX) return false;
if (file_pos == SIZE_MAX) return 0;
/* Open the right file and go to the correct position */
FioSeekToFile(file_slot, file_pos);
@ -225,27 +214,33 @@ bool LoadSpriteV2(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos
byte type = FioReadByte();
/* Type 0xFF indicates either a colourmap or some other non-sprite info; we do not handle them here. */
if (type == 0xFF) return false;
if (type == 0xFF) return 0;
byte colour = type & SCC_MASK;
byte zoom = FioReadByte();
if (colour == SCC_PAL && zoom == 0) {
sprite->height = FioReadWord();
sprite->width = FioReadWord();
sprite->x_offs = FioReadWord();
sprite->y_offs = FioReadWord();
ZoomLevel zoom_lvl = (sprite_type == ST_NORMAL) ? ZOOM_LVL_OUT_4X : ZOOM_LVL_NORMAL;
sprite[zoom_lvl].height = FioReadWord();
sprite[zoom_lvl].width = FioReadWord();
sprite[zoom_lvl].x_offs = FioReadWord();
sprite[zoom_lvl].y_offs = FioReadWord();
/* Mask out colour information. */
type = type & ~SCC_MASK;
/* For chunked encoding we store the decompressed size in the file,
* otherwise we can calculate it from the image dimensions. */
uint decomp_size = (type & 0x08) ? FioReadDword() : sprite->width * sprite->height;
uint decomp_size = (type & 0x08) ? FioReadDword() : sprite[zoom_lvl].width * sprite[zoom_lvl].height;
bool valid = DecodeSingleSprite(sprite, file_slot, file_pos, sprite_type, decomp_size, type);
if (FioGetPos() != start_pos + num) return WarnCorruptSprite(file_slot, file_pos, __LINE__);
return valid;
bool valid = DecodeSingleSprite(&sprite[zoom_lvl], file_slot, file_pos, sprite_type, decomp_size, type, zoom_lvl);
if (FioGetPos() != start_pos + num) {
WarnCorruptSprite(file_slot, file_pos, __LINE__);
return 0;
}
return 1 << zoom_lvl;
} else {
/* Not the wanted zoom level or colour depth, continue searching. */
FioSkipBytes(num - 2);
@ -253,10 +248,10 @@ bool LoadSpriteV2(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos
} while (FioReadDword() == id);
return false;
return 0;
}
bool SpriteLoaderGrf::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
uint8 SpriteLoaderGrf::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
{
if (this->container_ver >= 2) {
return LoadSpriteV2(sprite, file_slot, file_pos, sprite_type);

2
src/spriteloader/grf.hpp
View File

@ -19,7 +19,7 @@ class SpriteLoaderGrf : public SpriteLoader {
byte container_ver;
public:
SpriteLoaderGrf(byte container_ver) : container_ver(container_ver) {}
bool LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type);
uint8 LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type);
};
#endif /* SPRITELOADER_GRF_HPP */

30
src/spriteloader/png.cpp
View File

@ -51,7 +51,7 @@ static bool OpenPNGFile(const char *filename, uint32 id, bool mask)
return false;
}
static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 id, volatile bool mask)
static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 id, volatile bool mask, ZoomLevel zoom)
{
png_byte header[8];
png_structp png_ptr;
@ -115,7 +115,7 @@ static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 i
}
sprite->height = height;
sprite->width = width;
sprite->AllocateData(sprite->width * sprite->height * ZOOM_LVL_BASE * ZOOM_LVL_BASE);
sprite->AllocateData(zoom, sprite->width * sprite->height);
} else if (sprite->height != png_get_image_height(png_ptr, info_ptr) || sprite->width != png_get_image_width(png_ptr, info_ptr)) {
/* Make sure the mask image isn't larger than the sprite image. */
DEBUG(misc, 0, "Ignoring mask for SpriteID %d as it isn't the same dimension as the masked sprite", id);
@ -206,29 +206,15 @@ static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 i
return true;
}
bool SpriteLoaderPNG::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
uint8 SpriteLoaderPNG::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type)
{
ZoomLevel zoom_lvl = (sprite_type == ST_NORMAL) ? ZOOM_LVL_OUT_4X : ZOOM_LVL_NORMAL;
const char *filename = FioGetFilename(file_slot);
if (!LoadPNG(sprite, filename, (uint32)file_pos, false)) return false;
if (!LoadPNG(sprite, filename, (uint32)file_pos, true)) return false;
if (!LoadPNG(&sprite[zoom_lvl], filename, (uint32)file_pos, false, zoom_lvl)) return 0;
if (!LoadPNG(&sprite[zoom_lvl], filename, (uint32)file_pos, true, zoom_lvl)) return 0;
if (ZOOM_LVL_BASE != 1 && sprite_type == ST_NORMAL) {
/* Simple scaling, back-to-front so that no intermediate buffers are needed. */
int width = sprite->width * ZOOM_LVL_BASE;
int height = sprite->height * ZOOM_LVL_BASE;
for (int y = height - 1; y >= 0; y--) {
for (int x = width - 1; x >= 0; x--) {
sprite->data[y * width + x] = sprite->data[y / ZOOM_LVL_BASE * sprite->width + x / ZOOM_LVL_BASE];
}
}
sprite->width *= ZOOM_LVL_BASE;
sprite->height *= ZOOM_LVL_BASE;
sprite->x_offs *= ZOOM_LVL_BASE;
sprite->y_offs *= ZOOM_LVL_BASE;
}
return true;
return 1 << zoom_lvl;
}
#endif /* WITH_PNG */

2
src/spriteloader/png.hpp
View File

@ -17,7 +17,7 @@
/** Sprite loader for graphics coming from a PNG image. */
class SpriteLoaderPNG : public SpriteLoader {
public:
bool LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type);
uint8 LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type);
};
#endif /* SPRITELOADER_PNG_HPP */

11
src/spriteloader/spriteloader.hpp
View File

@ -43,23 +43,24 @@ public:
/**
* Allocate the sprite data of this sprite.
* @param zoom Zoom level to allocate the data for.
* @param size the minimum size of the data field.
*/
void AllocateData(size_t size) { this->data = Sprite::buffer.ZeroAllocate(size); }
void AllocateData(ZoomLevel zoom, size_t size) { this->data = Sprite::buffer[zoom].ZeroAllocate(size); }
private:
/** Allocated memory to pass sprite data around */
static ReusableBuffer<SpriteLoader::CommonPixel> buffer;
static ReusableBuffer<SpriteLoader::CommonPixel> buffer[ZOOM_LVL_COUNT];
};
/**
* Load a sprite from the disk and return a sprite struct which is the same for all loaders.
* @param sprite The sprite to fill with data.
* @param[out] sprite The sprites to fill with data.
* @param file_slot The file "descriptor" of the file we read from.
* @param file_pos The position within the file the image begins.
* @param sprite_type The type of sprite we're trying to load.
* @return true iff loading went okay.
* @return Bit mask of the zoom levels successfully loaded or 0 if no sprite could be loaded.
*/
virtual bool LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type) = 0;
virtual uint8 LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type) = 0;
virtual ~SpriteLoader() { }
};