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-rw-r--r--trunk/example.c12
-rw-r--r--trunk/libsprite.c77
-rw-r--r--trunk/libsprite.h2
3 files changed, 47 insertions, 44 deletions
diff --git a/trunk/example.c b/trunk/example.c
index f161b58..6c81dc6 100644
--- a/trunk/example.c
+++ b/trunk/example.c
@@ -67,10 +67,10 @@ int main(int argc, char *argv[])
for (uint32_t i = 0; i < sprite_area->sprite_count; i++) {
struct rosprite* sprite = sprite_area->sprites[i];
printf("\nname %s\n", sprite->name);
- printf("color_model %s\n", sprite->mode->color_model == rosprite_rgb ? "RGB" : "CMYK");
- printf("colorbpp %u\n", sprite->mode->colorbpp);
- printf("xdpi %u\n", sprite->mode->xdpi);
- printf("ydpi %u\n", sprite->mode->ydpi);
+ printf("color_model %s\n", sprite->mode.color_model == rosprite_rgb ? "RGB" : "CMYK");
+ printf("colorbpp %u\n", sprite->mode.colorbpp);
+ printf("xdpi %u\n", sprite->mode.xdpi);
+ printf("ydpi %u\n", sprite->mode.ydpi);
printf("width %u px\n", sprite->width);
printf("height %u px\n", sprite->height);
@@ -78,8 +78,8 @@ int main(int argc, char *argv[])
if (sprite->has_palette) printf("paletteSize %u\n", sprite->palettesize);
printf("hasMask %s\n", sprite->has_mask ? "YES" : "NO");
- if (sprite->has_mask) printf("mask_width %u\n", sprite->mode->mask_width);
- if (sprite->has_mask) printf("maskbpp %u\n", sprite->mode->maskbpp);
+ if (sprite->has_mask) printf("mask_width %u\n", sprite->mode.mask_width);
+ if (sprite->has_mask) printf("maskbpp %u\n", sprite->mode.maskbpp);
sdl_blank(screen);
diff --git a/trunk/libsprite.c b/trunk/libsprite.c
index 9147fb8..fde7c9c 100644
--- a/trunk/libsprite.c
+++ b/trunk/libsprite.c
@@ -215,9 +215,9 @@ void sprite_read_bytes(FILE* stream, uint8_t* buf, size_t count)
}
}
-struct rosprite_mode* sprite_get_mode(uint32_t spriteMode)
+static struct rosprite_mode sprite_get_mode(uint32_t spriteMode)
{
- struct rosprite_mode* mode = malloc(sizeof(struct rosprite_mode));
+ struct rosprite_mode mode;
uint32_t spriteType = (spriteMode & 0x78000000) >> 27; /* preserve bits 27-30 only */
@@ -226,44 +226,51 @@ struct rosprite_mode* sprite_get_mode(uint32_t spriteMode)
/* new modes have 1bpp masks (PRM5a-111)
* unless bit 31 is set (http://select.riscos.com/prm/graphics/sprites/alphachannel.html)
*/
- mode->maskbpp = (hasEightBitAlpha ? 8 : 1);
- mode->mask_width = mode->maskbpp;
- mode->xdpi = (spriteMode & 0x07ffc000) >> 14; /* preserve bits 14-26 only */
- mode->ydpi = (spriteMode & 0x00003ffe) >> 1; /* preserve bits 1-13 only */
+ mode.maskbpp = (hasEightBitAlpha ? 8 : 1);
+ mode.mask_width = mode.maskbpp;
+ mode.xdpi = (spriteMode & 0x07ffc000) >> 14; /* preserve bits 14-26 only */
+ mode.ydpi = (spriteMode & 0x00003ffe) >> 1; /* preserve bits 1-13 only */
- mode->color_model = rosprite_rgb;
+ mode.color_model = rosprite_rgb;
switch (spriteType) {
case 1:
- mode->colorbpp = 1; break;
+ mode.colorbpp = 1; break;
case 2:
- mode->colorbpp = 2; break;
+ mode.colorbpp = 2; break;
case 3:
- mode->colorbpp = 4; break;
+ mode.colorbpp = 4; break;
case 4:
- mode->colorbpp = 8; break;
+ mode.colorbpp = 8; break;
case 5:
- mode->colorbpp = 16; break;
+ mode.colorbpp = 16; break;
case 6:
- mode->colorbpp = 32; break;
+ mode.colorbpp = 32; break;
case 7:
- mode->colorbpp = 32;
- mode->color_model = rosprite_cmyk;
+ mode.colorbpp = 32;
+ mode.color_model = rosprite_cmyk;
break;
case 8:
- mode->colorbpp = 24; break;
+ mode.colorbpp = 24; break;
default:
assert(false);
}
} else {
/* clone station mode and return */
assert(spriteMode < 256); /* don't think you can have modes over 255? */
- memcpy(mode, &(oldmodes[spriteMode]), sizeof(struct rosprite_mode));
+ assert(oldmodes[spriteMode].colorbpp > 0);
+
+ mode = oldmodes[spriteMode];
}
+ /* illegal mode check */
+ assert(mode.colorbpp > 0);
+ assert(mode.xdpi > 0);
+ assert(mode.ydpi > 0);
+
return mode;
}
-uint32_t sprite_palette_lookup(struct rosprite* sprite, uint32_t pixel)
+static uint32_t sprite_palette_lookup(struct rosprite* sprite, uint32_t pixel)
{
uint32_t translated_pixel;
/* because we're dealing with 8bpp or less */
@@ -271,7 +278,7 @@ uint32_t sprite_palette_lookup(struct rosprite* sprite, uint32_t pixel)
assert(pixel <= sprite->palettesize); /* TODO: what to do if your color depth is bigger than palette? */
translated_pixel = sprite->palette[pixel];
} else {
- switch (sprite->mode->colorbpp) {
+ switch (sprite->mode.colorbpp) {
case 8:
assert(pixel < 256);
translated_pixel = sprite_8bpp_palette[pixel];
@@ -316,7 +323,7 @@ static inline uint32_t sprite_cmyk_to_rgb(uint32_t cmyk)
}
/* TODO: could make static inline? */
-uint32_t sprite_upscale_color(uint32_t pixel, struct rosprite_mode* mode, bool* has_alpha_pixel_data)
+static uint32_t sprite_upscale_color(uint32_t pixel, struct rosprite_mode* mode, bool* has_alpha_pixel_data)
{
switch (mode->colorbpp) {
case 32:
@@ -369,23 +376,23 @@ uint32_t sprite_upscale_color(uint32_t pixel, struct rosprite_mode* mode, bool*
}
}
-void sprite_fix_alpha(uint32_t* image, uint32_t pixels)
+static inline void sprite_fix_alpha(uint32_t* image, uint32_t pixels)
{
for (uint32_t i = 0; i <= pixels; i++) {
image[i] = image[i] & 0xffffff00;
}
}
-struct rosprite_mask_state* sprite_init_mask_state(struct rosprite* sprite, struct rosprite_header* header, uint8_t* mask)
+static struct rosprite_mask_state* sprite_init_mask_state(struct rosprite* sprite, struct rosprite_header* header, uint8_t* mask)
{
struct rosprite_mask_state* mask_state = malloc(sizeof(struct rosprite_mask_state));
mask_state->x = header->first_used_bit;
mask_state->y = 0;
mask_state->first_used_bit = header->first_used_bit;
- mask_state->row_max_bit = sprite->width * sprite->mode->mask_width;
+ mask_state->row_max_bit = sprite->width * sprite->mode.mask_width;
mask_state->height = sprite->height;
- mask_state->bpp = sprite->mode->mask_width;
+ mask_state->bpp = sprite->mode.mask_width;
mask_state->current_word = BTUINT(mask);
mask_state->current_byte_index = 4;
@@ -395,7 +402,7 @@ struct rosprite_mask_state* sprite_init_mask_state(struct rosprite* sprite, stru
/* Get the next mask byte.
* Mask of 0xff denotes 100% opaque, 0x00 denotes 100% transparent
*/
-uint32_t sprite_next_mask_pixel(uint8_t* mask, struct rosprite_mask_state* mask_state)
+static uint32_t sprite_next_mask_pixel(uint8_t* mask, struct rosprite_mask_state* mask_state)
{
/* a 1bpp mask (for new mode sprites), each row is word aligned (therefore potential righthand wastage */
const uint32_t bitmask = (1 << mask_state->bpp) - 1;
@@ -429,7 +436,7 @@ uint32_t sprite_next_mask_pixel(uint8_t* mask, struct rosprite_mask_state* mask_
return pixel;
}
-void sprite_load_high_color(uint8_t* image_in, uint8_t* mask, struct rosprite* sprite, struct rosprite_header* header)
+static void sprite_load_high_color(uint8_t* image_in, uint8_t* mask, struct rosprite* sprite, struct rosprite_header* header)
{
struct rosprite_mask_state* mask_state = NULL;
if (sprite->has_mask) mask_state = sprite_init_mask_state(sprite, header, mask);
@@ -437,7 +444,7 @@ void sprite_load_high_color(uint8_t* image_in, uint8_t* mask, struct rosprite* s
sprite->image = malloc(sprite->width * sprite->height * 4); /* all image data is 32bpp going out */
uint32_t currentByteIndex = 0;
- const uint32_t bpp = sprite->mode->colorbpp;
+ const uint32_t bpp = sprite->mode.colorbpp;
const uint32_t bytesPerPixel = bpp / 8;
const uint32_t row_max_bit = header->width_words * 32 - (31 - header->last_used_bit); /* Last used bit in row */
@@ -456,7 +463,7 @@ void sprite_load_high_color(uint8_t* image_in, uint8_t* mask, struct rosprite* s
}
bool old_has_alpha = has_alpha_pixel_data;
- pixel = sprite_upscale_color(pixel, sprite->mode, &has_alpha_pixel_data);
+ pixel = sprite_upscale_color(pixel, &(sprite->mode), &has_alpha_pixel_data);
if (old_has_alpha != has_alpha_pixel_data) {
sprite_fix_alpha(sprite->image, (y * sprite->width) + x_pixels - 1);
}
@@ -478,14 +485,14 @@ void sprite_load_high_color(uint8_t* image_in, uint8_t* mask, struct rosprite* s
if (sprite->has_mask) free(mask_state);
}
-void sprite_load_low_color(uint8_t* image_in, uint8_t* mask, struct rosprite* sprite, struct rosprite_header* header)
+static void sprite_load_low_color(uint8_t* image_in, uint8_t* mask, struct rosprite* sprite, struct rosprite_header* header)
{
struct rosprite_mask_state* mask_state = NULL;
if (sprite->has_mask) mask_state = sprite_init_mask_state(sprite, header, mask);
sprite->image = malloc(sprite->width * sprite->height * 4); /* all image data is 32bpp going out */
- const uint32_t bpp = sprite->mode->colorbpp;
+ const uint32_t bpp = sprite->mode.colorbpp;
const uint32_t row_max_bit = header->width_words * 32 - (31 - header->last_used_bit); /* Last used bit in row */
const uint32_t bitmask = (1 << bpp) - 1; /* creates a mask of 1s that is bpp bits wide */
@@ -548,15 +555,12 @@ struct rosprite* sprite_load_sprite(FILE* spritefile)
uint32_t spriteModeWord = sprite_read_word(spritefile);
sprite->mode = sprite_get_mode(spriteModeWord);
- assert(sprite->mode->colorbpp > 0);
- assert(sprite->mode->xdpi > 0);
- assert(sprite->mode->ydpi > 0);
/* TODO left-hand wastage */
- assert((header->last_used_bit + 1) % sprite->mode->colorbpp == 0);
+ assert((header->last_used_bit + 1) % sprite->mode.colorbpp == 0);
/*assert(header->width_words % sprite->mode->colorbpp == 0);*/
- sprite->width = (header->width_words * 32 - header->first_used_bit - (31 - header->last_used_bit)) / sprite->mode->colorbpp;
+ sprite->width = (header->width_words * 32 - header->first_used_bit - (31 - header->last_used_bit)) / sprite->mode.colorbpp;
sprite->palettesize = imageOffset - 44;
sprite->has_palette = (sprite->palettesize > 0);
@@ -606,7 +610,7 @@ struct rosprite* sprite_load_sprite(FILE* spritefile)
/* sanity check image_size */
assert((header->width_words) * 4 * (sprite->height) == header->image_size);
/* TODO: sanity check mask_size */
- if (sprite->mode->colorbpp > 8) {
+ if (sprite->mode.colorbpp > 8) {
sprite_load_high_color(image, mask, sprite, header);
} else {
sprite_load_low_color(image, mask, sprite, header);
@@ -648,7 +652,6 @@ void rosprite_destroy_sprite_area(struct rosprite_area* sprite_area)
{
for (uint32_t i = 0; i < sprite_area->sprite_count; i++) {
struct rosprite* sprite = sprite_area->sprites[i];
- free(sprite->mode);
if (sprite->has_palette) free(sprite->palette);
free(sprite->image);
free(sprite);
diff --git a/trunk/libsprite.h b/trunk/libsprite.h
index 945e489..6c5b055 100644
--- a/trunk/libsprite.h
+++ b/trunk/libsprite.h
@@ -35,7 +35,7 @@ struct rosprite_palette {
struct rosprite {
unsigned char name[13]; /* last byte for 0 terminator */
- struct rosprite_mode* mode;
+ struct rosprite_mode mode;
bool has_mask;
bool has_palette;
uint32_t palettesize; /* in number of entries (each entry is a word) */
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-18 16:55:11 +0000