splashbuilder/splashbuilder.py
2019-10-01 17:42:53 +01:00

179 lines
4.7 KiB
Python

"""
Some info.
Size =
0 = 1BDh
1 = 3BDh
Tilemap screen1 base = 800h
Tilemap screen2 base = 1000h
Tileset base = 2000h
Sprite base = 1800h
0000:7000 store the screen orientation
0000:7001 and onward can be used by the boot splash for variables
Splash flags, bit 7 > 0 = 1BPP tiles, 1 = 2BPP tiles
bit 4-0 store amount of palettes to copy.
For 1bpp tiles, each palettes store 2 colours.
For 2bpp tiles, each palettes store 4 colours.
Splash data is copied at
0600:0000
Avail color for console name:
0600:06e6 [0] 0h, F00h, F70h, FF0h
0600:06ee [4] 7F0h, F0h, F7h, FFh
0600:06f6 [8] 7Fh, Fh, 70Fh, F0Fh
0600:06fe [12] F07h, FFFh, 777h
On the VBlank code,
CS = 0600h
DS = 0600h
ES = ??
SS = 0000h
struct bootsplash_t
{
uint8_t padding[3];
uint8_t consoleFlags;
uint8_t consoleNameColor;
uint8_t padding2;
uint8_t size;
uint8_t startFrame;
uint8_t endFrame;
uint8_t spriteCount;
uint8_t paletteFlags;
uint8_t tilesCount;
uint16_t paletteOffset;
uint16_t tilesetOffset;
uint16_t tilemapOffset;
uint16_t horizontalTilemapDestOffset;
uint16_t verticalTilemapDestOffset;
uint8_t tilemapWidth;
uint8_t tilemapHeight;
uint32_t splashCodePointer;
uint16_t consoleNameHorizontalPos;
uint16_t consoleNameVerticalPos;
uint8_t padding3[2];
uint16_t soundSampleOffset;
uint16_t soundChannelDataOffset[3]
};
Sounds seems to be
uint32_t
duration (8 bit) (in vblank)
Volume (8bit)
Pitch (16bit)
if pitch bit 7 is set then the channel is stopped.
"""
import json
import struct
import argparse
class Coordinates(object):
def __init__(self, config):
self.x = config["top"]
self.y = config["left"]
class Animation(object):
def __init__(self, config):
self.start = config["startTime"]
self.end = config["endTime"]
class ConsoleName(object):
def __init__(self, config):
self.vertical = Coordinates(config["vertical"])
self.horizontal = Coordinates(config["horizontal"])
self.color = config["color"]
class Tiles(object):
def __init__(self, config):
self.bpp = config["bpp"]
self.count = config["count"]
self.binfile = config["binfile"]
self.data = open(self.binfile, "rb").read()
class Tilemap(object):
def __init__(self, config):
self.vertical = Coordinates(config["vertical"])
self.horizontal = Coordinates(config["horizontal"])
self.height = config["height"]
self.width = config["width"]
self.binfile = config["binfile"]
self.data = open(self.binfile, "rb").read()
class VBlankCode(object):
def __init__(self, config):
self.asmfile = config["asm"]
runcmd = "nasm -f bin -o {output} {input}"
class Sound(object):
def __init__(self, config):
self.channelwaves = config["channelwaves"]
self.waves = open(self.channelwaves, "rb").read()
self.channeldata = config["channeldata"]
self.chdata = {}
self.chdata[0] = None
self.chdata[1] = None
self.chdata[2] = None
self.chdata[3] = None
if self.channeldata["ch0"] is not "":
self.chdata[0] = open(self.channeldata["ch0"], "rb").read()
if self.channeldata["ch1"] is not "":
self.chdata[1] = open(self.channeldata["ch1"], "rb").read()
if self.channeldata["ch2"] is not "":
self.chdata[2] = open(self.channeldata["ch2"], "rb").read()
if self.channeldata["ch3"] is not "":
self.chdata[3] = open(self.channeldata["ch3"], "rb").read()
class BootSplash(object):
def __init__(self, config_json):
self._spriteCount = config_json["sprite"]["count"]
self._animation = Animation(config_json["animation"])
self._consoleName = ConsoleName(config_json["consoleName"])
self._palettes = config_json["palette"]
self._tiles = Tiles(config_json["tiles"])
self._tilemap = Tilemap(config_json["tilemap"])
self._vblankcode = VBlankCode(config_json["vblankCode"])
self._sound = Sound(config_json["sound"])
def write(self, filename):
print(self)
def main():
parser = argparse.ArgumentParser()
parser.add_argument("-c", "--config", required=True, type=str, help="Configuration file")
parser.add_argument("-o", "--output", type=str, help="Output file", default="output.bin")
args = parser.parse_args()
try:
with open(args.config, "rt") as f:
config = json.load(f)
except IOError:
print("Error: config file '{f}' not found".format(f=args.config))
return -1
bs = BootSplash(config)
bs.write(args.output)
if __name__ == "__main__":
main()