mirror of
https://github.com/weiju/amiga-stuff
synced 2025-11-20 08:48:41 +00:00
restructured source tree
This commit is contained in:
Wei-ju Wu
3
iffview/.gitignore
vendored
Normal file
3
iffview/.gitignore
vendored
Normal file
@ -0,0 +1,3 @@
|
||||
iffview
|
||||
ilbm
|
||||
examples
|
||||
17
iffview/Makefile
Normal file
17
iffview/Makefile
Normal file
@ -0,0 +1,17 @@
|
||||
#CC=vc +aos68k
|
||||
CC=vc +kick13
|
||||
CFLAGS=-c99 -I$(NDK_INC) -DDEBUG
|
||||
|
||||
all: iffview
|
||||
|
||||
clean:
|
||||
rm -f *.o iffview ilbm
|
||||
|
||||
iffview: iffview.o ilbm.o
|
||||
$(CC) $(CFLAGS) $^ -lamiga -lauto -o $@
|
||||
|
||||
# Mostly for testing
|
||||
# interestingly, when defining std=c99, LITTLE_ENDIAN disappears as a definition
|
||||
# in gcc, so we define it explicitly
|
||||
ilbm: ilbm.c
|
||||
gcc -o $@ $< -DSTANDALONE -DDEBUG -std=c99 -DLITTLE_ENDIAN
|
||||
23
iffview/README.md
Normal file
23
iffview/README.md
Normal file
@ -0,0 +1,23 @@
|
||||
## iffview - A simple IFF viewer application
|
||||
|
||||
### Description
|
||||
|
||||
Writing a simple IFF viewing tool. The learning purpose is to see how to use the
|
||||
different available display modes and screens on Intuition
|
||||
|
||||
### Building
|
||||
|
||||
Developed with VBCC, on your system type
|
||||
|
||||
```
|
||||
make
|
||||
```
|
||||
|
||||
### Running
|
||||
|
||||
Open the command line interface on your real Amiga or emulator and type
|
||||
|
||||
```
|
||||
iffview <your image>
|
||||
```
|
||||
|
||||
226
iffview/iffview.c
Normal file
226
iffview/iffview.c
Normal file
@ -0,0 +1,226 @@
|
||||
/* iffview.c - IFF ILBM viewer application for Amiga OS >= 1.3
|
||||
|
||||
This file is part of amiga30yrs.
|
||||
|
||||
amiga30yrs is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
amiga30yrs is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with amiga30yrs. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include <exec/libraries.h>
|
||||
#include <intuition/intuition.h>
|
||||
|
||||
#include <clib/alib_protos.h>
|
||||
#include <clib/exec_protos.h>
|
||||
#include <clib/graphics_protos.h>
|
||||
#include <clib/intuition_protos.h>
|
||||
|
||||
#ifdef __VBCC__
|
||||
#include <clib/alib_stdio_protos.h>
|
||||
#endif
|
||||
#include "ilbm.h"
|
||||
|
||||
#define WIN_TITLE "IFF Viewer"
|
||||
#define FILE_MENU_NUM 0
|
||||
#define NUM_FILE_MENU_ITEMS 2
|
||||
|
||||
#define QUIT_MENU_ITEM_NUM 0
|
||||
|
||||
struct NewWindow newwin = {
|
||||
0, 0, 0, 0, 0, 1,
|
||||
IDCMP_CLOSEWINDOW | IDCMP_MENUPICK,
|
||||
WFLG_CLOSEGADGET | WFLG_ACTIVATE | WFLG_NOCAREREFRESH | WFLG_BACKDROP,
|
||||
NULL, NULL, WIN_TITLE,
|
||||
NULL, NULL,
|
||||
0, 0,
|
||||
0, 0,
|
||||
CUSTOMSCREEN
|
||||
};
|
||||
|
||||
struct IntuiText menutext[] = {
|
||||
{0, 1, JAM2, 0, 1, NULL, "Open...", NULL},
|
||||
{0, 1, JAM2, 0, 1, NULL, "Quit", NULL}
|
||||
};
|
||||
|
||||
struct MenuItem fileMenuItems[] = {
|
||||
{NULL, 0, 0, 0, 0, ITEMTEXT | ITEMENABLED | HIGHCOMP | COMMSEQ, 0,
|
||||
&menutext[1], NULL, 'Q', NULL, 0}
|
||||
};
|
||||
|
||||
struct Menu menus[] = {
|
||||
{NULL, 20, 0, 0, 0, MENUENABLED | MIDRAWN, "File", &fileMenuItems[0], 0, 0, 0, 0}
|
||||
};
|
||||
|
||||
struct Window *window;
|
||||
struct Screen *screen;
|
||||
|
||||
void cleanup()
|
||||
{
|
||||
if (window) {
|
||||
ClearMenuStrip(window);
|
||||
CloseWindow(window);
|
||||
}
|
||||
if (screen) {
|
||||
CloseScreen(screen);
|
||||
}
|
||||
}
|
||||
|
||||
BOOL handle_menu(UWORD menuNum, UWORD itemNum, UWORD subItemNum)
|
||||
{
|
||||
printf("menu, menu num: %d, item num: %d, sub item num: %d\n",
|
||||
(int) menuNum, (int) itemNum, (int) subItemNum);
|
||||
if (menuNum == FILE_MENU_NUM && itemNum == QUIT_MENU_ITEM_NUM) {
|
||||
/* quit */
|
||||
return TRUE;
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
void handle_events()
|
||||
{
|
||||
BOOL done = FALSE;
|
||||
struct IntuiMessage *msg;
|
||||
ULONG msgClass;
|
||||
UWORD menuCode;
|
||||
int buttonId;
|
||||
|
||||
while (!done) {
|
||||
Wait(1 << window->UserPort->mp_SigBit);
|
||||
if (msg = (struct IntuiMessage *) GetMsg(window->UserPort)) {
|
||||
msgClass = msg->Class;
|
||||
switch (msgClass) {
|
||||
case IDCMP_CLOSEWINDOW:
|
||||
done = TRUE;
|
||||
break;
|
||||
case IDCMP_MENUPICK:
|
||||
menuCode = msg->Code;
|
||||
done = handle_menu(MENUNUM(menuCode), ITEMNUM(menuCode), SUBNUM(menuCode));
|
||||
break;
|
||||
case IDCMP_REQCLEAR:
|
||||
puts("requester closed");
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
ReplyMsg((struct Message *) msg);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void setup_menu()
|
||||
{
|
||||
UWORD txWidth, txHeight, txBaseline, txSpacing, itemWidth, itemHeight, numItems;
|
||||
struct RastPort *rp = &window->WScreen->RastPort;
|
||||
int i;
|
||||
|
||||
txWidth = rp->TxWidth;
|
||||
txHeight = rp->TxHeight;
|
||||
txBaseline = rp->TxBaseline;
|
||||
txSpacing = rp->TxSpacing;
|
||||
printf("TxWidth: %d, TxHeight: %d, TxBaseline: %d, TxSpacing: %d\n",
|
||||
(int) txWidth, (int) txHeight, (int) txBaseline, (int) txSpacing);
|
||||
|
||||
/* Set file menu bounds */
|
||||
menus[0].Width = TextLength(rp, "File", strlen("File")) + txWidth;
|
||||
menus[0].Height = txHeight;
|
||||
|
||||
/* Set file menu items bounds */
|
||||
/* We actually need to know what the command uses up */
|
||||
itemWidth = txWidth * strlen("Open...") + 50;
|
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itemHeight = txHeight + 2; /* 2 pixels adjustment */
|
||||
|
||||
numItems = sizeof(fileMenuItems) / sizeof(struct MenuItem);
|
||||
printf("# file items: %d\n", (int) numItems);
|
||||
for (i = 0; i < numItems; i++) {
|
||||
fileMenuItems[i].TopEdge = i * itemHeight;
|
||||
fileMenuItems[i].Height = itemHeight;
|
||||
fileMenuItems[i].Width = itemWidth;
|
||||
}
|
||||
|
||||
SetMenuStrip(window, &menus[0]);
|
||||
}
|
||||
|
||||
struct Image image = { 0, 0, 0, 0, 0, NULL, 0, 0, NULL};
|
||||
struct NewScreen newscreen = {
|
||||
0, 0, 320, 256, 5,
|
||||
0, 1, // pens
|
||||
0, // view modes
|
||||
CUSTOMSCREEN, // type
|
||||
NULL, // font
|
||||
"My Screen", // title
|
||||
NULL, // unused (gadgets)
|
||||
NULL // custom bitmap
|
||||
};
|
||||
|
||||
/* Defined automatically in VBCC */
|
||||
extern struct Library *DOSBase;
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
if (argc <= 1) {
|
||||
puts("Usage: iffview <iff-file>");
|
||||
return 0;
|
||||
}
|
||||
ILBMData *ilbm_data = NULL;
|
||||
ilbm_data = parse_file(argv[1]);
|
||||
if (!ilbm_data) {
|
||||
puts("error reading IFF file");
|
||||
exit(0);
|
||||
}
|
||||
image.Width = ilbm_data->bmheader->w;
|
||||
image.Height = ilbm_data->bmheader->h;
|
||||
image.Depth = ilbm_data->bmheader->nPlanes;
|
||||
// if image.Width must be a multiple of 16
|
||||
int mod16 = image.Width % 16;
|
||||
image.Width = mod16 == 0 ? image.Width : image.Width + (16 - mod16);
|
||||
int wordwidth = image.Width / 16;
|
||||
int finalsize = wordwidth * image.Height * image.Depth * sizeof(UWORD);
|
||||
image.ImageData = AllocMem(finalsize, MEMF_CHIP|MEMF_CLEAR);
|
||||
|
||||
if (!image.ImageData) {
|
||||
puts("can't allocate chip memory for image");
|
||||
free_ilbm_data(ilbm_data);
|
||||
exit(0);
|
||||
}
|
||||
ilbm_to_image_data((char *) image.ImageData, ilbm_data, image.Width, image.Height);
|
||||
image.PlanePick = (1 << image.Depth) - 1;
|
||||
|
||||
/* Adjust the new screen according to the IFF image */
|
||||
newscreen.ViewModes = ilbm_data->bmheader->camgFlags;
|
||||
newscreen.Depth = image.Depth;
|
||||
screen = OpenScreen(&newscreen);
|
||||
if (screen) {
|
||||
ShowTitle(screen, FALSE);
|
||||
for (int i = 0; i < ilbm_data->num_colors; i++) {
|
||||
ColorRegister *color = &ilbm_data->colors[i];
|
||||
SetRGB4(&screen->ViewPort, i, color->red >> 4,
|
||||
color->green >> 4, color->blue >> 4);
|
||||
}
|
||||
newwin.Width = newwin.MinWidth = newwin.MaxWidth = newscreen.Width;
|
||||
newwin.Height = newwin.MinHeight = newwin.MaxWidth = newscreen.Height;
|
||||
newwin.Screen = screen;
|
||||
if (window = OpenWindow(&newwin)) {
|
||||
setup_menu();
|
||||
// When drawing to a screen's rastport directly, the image must be contained
|
||||
// within its boundaries otherwise it crashes, draw to a Window and it will be clipped
|
||||
// Note: rastport is the entire window, including title bars
|
||||
if (screen) DrawImage(window->RPort, &image, 0, 0);
|
||||
handle_events();
|
||||
}
|
||||
}
|
||||
cleanup();
|
||||
if (ilbm_data) free_ilbm_data(ilbm_data);
|
||||
FreeMem(image.ImageData, finalsize);
|
||||
return 0;
|
||||
}
|
||||
303
iffview/ilbm.c
Normal file
303
iffview/ilbm.c
Normal file
@ -0,0 +1,303 @@
|
||||
/* ilbm.c - Universal IFF ILBM handling module
|
||||
|
||||
This file is part of amiga30yrs.
|
||||
|
||||
amiga30yrs is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
amiga30yrs is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with amiga30yrs. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "ilbm.h"
|
||||
|
||||
#ifdef LITTLE_ENDIAN
|
||||
#include <byteswap.h>
|
||||
#endif
|
||||
|
||||
#define IFF_HEADER_SIZE 12
|
||||
#define CHUNK_HEADER_SIZE 8
|
||||
|
||||
BitMapHeader *read_BMHD(FILE *fp, int datasize)
|
||||
{
|
||||
BitMapHeader *header;
|
||||
int bytes_read;
|
||||
|
||||
header = calloc(1, sizeof(BitMapHeader));
|
||||
bytes_read = fread(header, sizeof(char), datasize, fp);
|
||||
|
||||
#ifdef LITTLE_ENDIAN
|
||||
header->x = __bswap_16(header->x);
|
||||
header->y = __bswap_16(header->y);
|
||||
header->w = __bswap_16(header->w);
|
||||
header->h = __bswap_16(header->h);
|
||||
header->transparentColor = __bswap_16(header->transparentColor);
|
||||
header->pageWidth = __bswap_16(header->pageWidth);
|
||||
header->pageHeight = __bswap_16(header->pageHeight);
|
||||
#endif
|
||||
|
||||
/*
|
||||
printf("x: %d y: %d w: %d h: %d\n",
|
||||
header.x, header.y, header.w, header.h);
|
||||
printf("# planes: %d\n", header.nPlanes);
|
||||
printf("# transp col: %d\n", header.transparentColor);
|
||||
printf("pagewidth: %d pageheight: %d\n", header.pageWidth, header.pageHeight);
|
||||
*/
|
||||
if (header->compression == cmpNone) puts("no compression");
|
||||
else if (header->compression == cmpByteRun1) puts("Byte Run 1 compression");
|
||||
else puts("unknown compression");
|
||||
return header;
|
||||
}
|
||||
|
||||
ColorRegister *read_CMAP(FILE *fp, int datasize, int *ncols)
|
||||
{
|
||||
int num_colors = datasize / 3, bytes_read;
|
||||
ColorRegister *colors;
|
||||
|
||||
colors = malloc(datasize);
|
||||
bytes_read = fread(colors, sizeof(ColorRegister), num_colors, fp);
|
||||
*ncols = num_colors;
|
||||
return colors;
|
||||
}
|
||||
|
||||
ULONG read_CAMG(FILE *fp, int datasize)
|
||||
{
|
||||
ULONG flags, bytes_read;
|
||||
bytes_read = fread(&flags, sizeof(ULONG), 1, fp);
|
||||
#ifdef LITTLE_ENDIAN
|
||||
flags = __bswap_32(flags);
|
||||
#endif
|
||||
if (flags & HAM) puts("HAM mode !");
|
||||
else if (flags & EXTRA_HALFBRITE) puts("Extra Halfbrite mode !");
|
||||
|
||||
return flags;
|
||||
}
|
||||
|
||||
void read_CRNG(FILE *fp, int datasize)
|
||||
{
|
||||
ULONG bytes_read;
|
||||
CRange color_reg_range;
|
||||
bytes_read = fread(&color_reg_range, sizeof(CRange), 1, fp);
|
||||
#ifdef LITTLE_ENDIAN
|
||||
color_reg_range.rate = __bswap_16(color_reg_range.rate);
|
||||
color_reg_range.flags = __bswap_16(color_reg_range.flags);
|
||||
#endif
|
||||
#ifdef DEBUG
|
||||
printf("CRange, rate: %d, flags: %04x, low: %d, high: %d\n",
|
||||
(int) color_reg_range.rate, (int) color_reg_range.flags,
|
||||
(int) color_reg_range.low, (int) color_reg_range.high);
|
||||
#endif
|
||||
}
|
||||
|
||||
UBYTE *read_BODY(FILE *fp, int datasize, BitMapHeader *bmheader, int *data_bytes)
|
||||
{
|
||||
ULONG bytes_read;
|
||||
BYTE *buffer, *dst_buffer;
|
||||
int src_i = 0, dst_i = 0, dst_size;
|
||||
|
||||
buffer = malloc(datasize);
|
||||
*data_bytes = datasize;
|
||||
dst_size = bmheader->w * bmheader->h * bmheader->nPlanes / 8;
|
||||
printf("target size: %d, data size: %d\n", dst_size, datasize);
|
||||
bytes_read = fread(buffer, sizeof(char), datasize, fp);
|
||||
|
||||
if (bmheader->compression == cmpByteRun1) {
|
||||
BYTE b0, b1;
|
||||
int i;
|
||||
/* decompress data */
|
||||
dst_buffer = malloc(dst_size);
|
||||
*data_bytes = dst_size;
|
||||
while (src_i < datasize) {
|
||||
b0 = buffer[src_i++];
|
||||
if (b0 >= 0) {
|
||||
for (i = 0; i < b0 + 1; i++) dst_buffer[dst_i++] = buffer[src_i++];
|
||||
} else {
|
||||
b1 = buffer[src_i++];
|
||||
for (i = 0; i < -b0 + 1; i++) dst_buffer[dst_i++] = b1;
|
||||
}
|
||||
}
|
||||
free(buffer);
|
||||
return dst_buffer;
|
||||
}
|
||||
return buffer;
|
||||
}
|
||||
|
||||
#define skip_chunk(fp, datasize) fseek(fp, datasize, SEEK_CUR)
|
||||
|
||||
ILBMData *read_chunks(FILE *fp, int filesize, int total_read)
|
||||
{
|
||||
// make sure that our char buffers are aligned on word boundaries
|
||||
unsigned char buffer[CHUNK_HEADER_SIZE], id[5];
|
||||
int i, bytes_read, datasize, imgdata_size;
|
||||
BitMapHeader *bmheader = NULL;
|
||||
ColorRegister *colors = NULL;
|
||||
UBYTE *imgdata = NULL;
|
||||
ILBMData *result = calloc(1, sizeof(ILBMData));
|
||||
|
||||
while (total_read < filesize) {
|
||||
bytes_read = fread(buffer, sizeof(char), 8, fp);
|
||||
for (i = 0; i < 4; i++) id[i] = buffer[i];
|
||||
id[4] = 0;
|
||||
#ifdef LITTLE_ENDIAN
|
||||
datasize = __bswap_32(*((ULONG *) &buffer[4]));
|
||||
#else
|
||||
datasize = *((ULONG *) &buffer[4]);
|
||||
#endif
|
||||
if (!strncmp("BMHD", buffer, 4)) bmheader = read_BMHD(fp, datasize);
|
||||
else if (!strncmp("CMAP", buffer, 4)) colors = read_CMAP(fp, datasize, &result->num_colors);
|
||||
else if (!strncmp("CRNG", buffer, 4)) read_CRNG(fp, datasize);
|
||||
else if (!strncmp("CAMG", buffer, 4)) bmheader->camgFlags = read_CAMG(fp, datasize);
|
||||
else if (!strncmp("BODY", buffer, 4)) imgdata = read_BODY(fp, datasize, bmheader, &imgdata_size);
|
||||
else {
|
||||
#ifdef DEBUG
|
||||
printf("WARNING - Unsupported chunk '%s', size: %d\n", id, datasize);
|
||||
#endif
|
||||
skip_chunk(fp, datasize);
|
||||
}
|
||||
/* Padding to even if necessary */
|
||||
if (datasize % 2) {
|
||||
fseek(fp, 1, SEEK_CUR);
|
||||
datasize++;
|
||||
}
|
||||
total_read += datasize + CHUNK_HEADER_SIZE;
|
||||
}
|
||||
printf("total read: %d\n", total_read);
|
||||
result->imgdata = imgdata;
|
||||
result->data_bytes = imgdata_size;
|
||||
result->colors = colors;
|
||||
result->bmheader = bmheader;
|
||||
return result;
|
||||
}
|
||||
|
||||
ILBMData *parse_file(const char *path)
|
||||
{
|
||||
FILE *fp;
|
||||
char buffer[IFF_HEADER_SIZE];
|
||||
size_t bytes_read;
|
||||
ULONG filesize, total_read = 0;
|
||||
ILBMData *result = NULL;
|
||||
|
||||
fp = fopen(path, "rb");
|
||||
|
||||
/* need to check whether we actually can read this much*/
|
||||
bytes_read = fread(buffer, sizeof(char), IFF_HEADER_SIZE, fp);
|
||||
total_read += bytes_read;
|
||||
|
||||
if (!strncmp("FORM", buffer, 4)) {
|
||||
|
||||
#ifdef LITTLE_ENDIAN
|
||||
puts("little endian");
|
||||
filesize = __bswap_32(*((ULONG *) &buffer[4])) + CHUNK_HEADER_SIZE;
|
||||
#else
|
||||
puts("big endian");
|
||||
filesize = *((ULONG *) &buffer[4]) + CHUNK_HEADER_SIZE;
|
||||
#endif
|
||||
|
||||
if (!strncmp("ILBM", &buffer[8], 4)) {
|
||||
#ifdef DEBUG
|
||||
printf("IFF/ILBM file, file size: %d\n", (int) filesize);
|
||||
#endif
|
||||
result = read_chunks(fp, filesize, total_read);
|
||||
} else {
|
||||
puts("not an IFF ILBM file");
|
||||
}
|
||||
} else {
|
||||
puts("not an IFF file");
|
||||
}
|
||||
fclose(fp);
|
||||
return result;
|
||||
}
|
||||
|
||||
void free_ilbm_data(ILBMData *data)
|
||||
{
|
||||
if (data) {
|
||||
if (data->colors) free(data->colors);
|
||||
if (data->bmheader) free(data->bmheader);
|
||||
if (data->imgdata) free(data->imgdata);
|
||||
free(data);
|
||||
}
|
||||
}
|
||||
|
||||
void print_ilbm_info(ILBMData *data)
|
||||
{
|
||||
printf("width: %d, height: %d, # planes: %d # colors: %d\n",
|
||||
(int) data->bmheader->w,
|
||||
(int) data->bmheader->h,
|
||||
(int) data->bmheader->nPlanes,
|
||||
data->num_colors);
|
||||
}
|
||||
|
||||
/*
|
||||
* ILBM interleaved bit maps -> Intuition Image data
|
||||
* ILBM is interleaved
|
||||
* - plane 0/row 0 -> plane 1/row 0 -> ... plane 0/row 1 -> plane 1/row 1 ->...
|
||||
* - rows are multiples of 8
|
||||
*
|
||||
* but Intuition Image expects its data
|
||||
* - plane-by-plane
|
||||
* - as a multiple of 16
|
||||
*/
|
||||
void ilbm_to_image_data(char *dest, ILBMData *data, int dest_width, int dest_height)
|
||||
{
|
||||
if (data->bmheader->w % 8 != 0) {
|
||||
puts("ERROR: source width must be multiple of 8");
|
||||
return;
|
||||
}
|
||||
if (dest_width % 16 != 0) {
|
||||
puts("ERROR: destination width must be multiple of 16");
|
||||
return;
|
||||
}
|
||||
if (dest_width < data->bmheader->w || dest_height < data->bmheader->h) {
|
||||
puts("ERROR: destination dimensions are smaller than source");
|
||||
return;
|
||||
}
|
||||
int src_bytes_per_row = data->bmheader->w / 8;
|
||||
int dest_bytes_per_row = dest_width / 8;
|
||||
char *src_ptr = data->imgdata;
|
||||
int src_offset, img_height = data->bmheader->h, num_planes = data->bmheader->nPlanes;
|
||||
int row_data_size = num_planes * src_bytes_per_row;
|
||||
|
||||
for (int plane = 0; plane < num_planes; plane++) {
|
||||
// copy row-by-row
|
||||
for (int row = 0; row < img_height; row++) {
|
||||
src_offset = (row * row_data_size) + (plane * src_bytes_per_row);
|
||||
memcpy(dest, src_ptr + src_offset, src_bytes_per_row);
|
||||
dest += dest_bytes_per_row;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef STANDALONE
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
if (argc <= 1) {
|
||||
puts("usage: ilbm <image-file>");
|
||||
} else {
|
||||
ILBMData *data = parse_file(argv[1]);
|
||||
print_ilbm_info(data);
|
||||
int dest_width = data->bmheader->w;
|
||||
int mod16 = dest_width % 16;
|
||||
if (mod16 > 0) {
|
||||
dest_width += mod16;
|
||||
}
|
||||
int wordwidth = dest_width / 16;
|
||||
int dest_height = data->bmheader->h;
|
||||
int finalsize = wordwidth * data->bmheader->h * data->bmheader->nPlanes * 2;
|
||||
printf("loaded size: %d, final size: %d\n", data->data_bytes, finalsize);
|
||||
char *dest = calloc(finalsize, sizeof(char));
|
||||
ilbm_to_image_data(dest, data, dest_width, dest_height);
|
||||
free(dest);
|
||||
free_ilbm_data(data);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
95
iffview/ilbm.h
Normal file
95
iffview/ilbm.h
Normal file
@ -0,0 +1,95 @@
|
||||
/* ilbm.h - Definitions for IFF ILBM handling module
|
||||
|
||||
This file is part of amiga30yrs.
|
||||
|
||||
amiga30yrs is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
amiga30yrs is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with amiga30yrs. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#pragma once
|
||||
#ifndef __ILBM_H__
|
||||
#define __ILBM_H__
|
||||
|
||||
#ifdef __VBCC__
|
||||
|
||||
#include <exec/types.h>
|
||||
#include <graphics/view.h>
|
||||
|
||||
#else
|
||||
|
||||
#include <sys/types.h>
|
||||
#define ULONG u_int32_t
|
||||
#define UWORD u_int16_t
|
||||
#define UBYTE u_int8_t
|
||||
|
||||
#define LONG int32_t
|
||||
#define WORD int16_t
|
||||
#define BYTE int8_t
|
||||
typedef int BOOL;
|
||||
#define TRUE 1
|
||||
#define FALSE 0
|
||||
|
||||
#define HAM 0x800
|
||||
#define EXTRA_HALFBRITE 0x80
|
||||
|
||||
#endif
|
||||
|
||||
/*
|
||||
* From the specification
|
||||
*/
|
||||
typedef UBYTE Masking; /* Choice of masking technique. */
|
||||
|
||||
#define mskNone 0
|
||||
#define mskHasMask 1
|
||||
#define mskHasTransparentColor 2
|
||||
#define mskLasso 3
|
||||
|
||||
typedef UBYTE Compression;
|
||||
#define cmpNone 0
|
||||
#define cmpByteRun1 1
|
||||
|
||||
typedef struct {
|
||||
UWORD w, h;
|
||||
WORD x, y;
|
||||
UBYTE nPlanes;
|
||||
Masking masking;
|
||||
Compression compression;
|
||||
UBYTE pad1;
|
||||
UWORD transparentColor;
|
||||
UBYTE xAspect, yAspect;
|
||||
WORD pageWidth, pageHeight;
|
||||
ULONG camgFlags;
|
||||
} BitMapHeader;
|
||||
|
||||
/* Colors are in the range 0-255 */
|
||||
typedef struct {
|
||||
UBYTE red, green, blue;
|
||||
} ColorRegister;
|
||||
|
||||
typedef struct {
|
||||
WORD pad1;
|
||||
WORD rate;
|
||||
WORD flags;
|
||||
UBYTE low, high;
|
||||
} CRange;
|
||||
|
||||
typedef struct _ILBMData {
|
||||
BitMapHeader *bmheader;
|
||||
int num_colors, data_bytes;
|
||||
ColorRegister *colors;
|
||||
UBYTE *imgdata;
|
||||
} ILBMData;
|
||||
|
||||
extern ILBMData *parse_file(const char *path);
|
||||
extern void free_ilbm_data(ILBMData *data);
|
||||
extern void ilbm_to_image_data(char *dest, ILBMData *data, int dest_width, int dest_height);
|
||||
#endif /* __ILBM_H__ */
|
||||
Reference in New Issue
Block a user