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#!/usr/bin/python
# Build VDPDeviceImpl.h
# (C) Wladimir J. van der Laan 2008
from sys import stderr
def process_file(fname):
"""Process include file"""
f = open(fname, "r")
while True:
line = f.readline()
if not line:
break
line = line.rstrip()
if line.startswith("#define VDP_FUNC_ID_"):
begin = line.find("VDP_")
end = line.find(" ", begin)
funcname = line[begin:end]
functions.append(funcname)
if line.startswith("typedef") and line.endswith("("):
begin = line.rfind("Vdp")
end = line.find("(")
typename = line[begin:end]
types[typename[3:].lower()] = typename
f.close()
def lower_case(s):
"BLA_BLA to blabla"
parts = s.split("_")
parts = [x.lower() for x in parts]
return "".join(parts)
functions = []
types = {}
process_file("/usr/include/vdpau/vdpau.h")
process_file("/usr/include/vdpau/vdpau_x11.h")
# Prototype
proto = []
for f in functions:
if f == "VDP_FUNC_ID_BASE_WINSYS": # skip this one
continue
base = f[12:]
# to camelcase
base = lower_case(base)
try:
proto.append((f, types[base], types[base][3:]))
except KeyError:
stderr.write("No prototype found for %s (%s)\n" %(f, base))
# We now have an array of prototypes and VDP_FUNC_ID...
# Build our impl class
print "#ifndef H_VDPDeviceImpl"
print "#define H_VDPDeviceImpl"
print "#include <assert.h>"
print "struct VDPDeviceImpl {"
print " VDPDeviceImpl(VdpDevice device, VdpGetProcAddress *get_proc_address);"
print " VdpDevice device;"
print
for (id, type, name) in proto:
print " %s *%s;" % (type, name)
print "};";
print "#define GETADDR(device, function_id, function_pointer) \\"
print " assert(get_proc_address(device, function_id, function_pointer) == VDP_STATUS_OK)"
print "VDPDeviceImpl::VDPDeviceImpl(VdpDevice device, VdpGetProcAddress *get_proc_address):"
print " device(device)"
print "{"
# look'em up
for (id, type, name) in proto:
print " GETADDR(device, %s, (void**)&%s);" % (id, name)
print "}"
print "#undef GETADDR"
print "#endif"
#print proto
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