source: python/lib/gen_external.py @ dbdb48a

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5
Last change on this file since dbdb48a was dbdb48a, checked in by Paul Brossier <piem@piem.org>, 6 years ago

python/lib/gen_external.py: pass '-x c' to emcc only

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[19c3d75]1import distutils.ccompiler
[541ea280]2import sys
3import os
4import subprocess
5import glob
[ccb9fb5]6
[89b04e8]7header = os.path.join('src', 'aubio.h')
8output_path = os.path.join('python', 'gen')
[1167631]9
10source_header = """// this file is generated! do not modify
[ccb9fb5]11#include "aubio-types.h"
12"""
13
[51ca615]14default_skip_objects = [
[541ea280]15    # already in ext/
16    'fft',
17    'pvoc',
18    'filter',
19    'filterbank',
20    # AUBIO_UNSTABLE
21    'hist',
22    'parameter',
23    'scale',
24    'beattracking',
25    'resampler',
26    'peakpicker',
27    'pitchfcomb',
28    'pitchmcomb',
29    'pitchschmitt',
30    'pitchspecacf',
31    'pitchyin',
32    'pitchyinfft',
[9fa0ed1]33    'pitchyinfast',
[541ea280]34    'sink',
35    'sink_apple_audio',
36    'sink_sndfile',
37    'sink_wavwrite',
38    #'mfcc',
39    'source',
40    'source_apple_audio',
41    'source_sndfile',
42    'source_avcodec',
43    'source_wavread',
44    #'sampler',
45    'audio_unit',
46    'spectral_whitening',
47]
48
[ccb9fb5]49
[19c3d75]50def get_preprocessor():
51    # findout which compiler to use
52    from distutils.sysconfig import customize_compiler
53    compiler_name = distutils.ccompiler.get_default_compiler()
54    compiler = distutils.ccompiler.new_compiler(compiler=compiler_name)
55    try:
56        customize_compiler(compiler)
57    except AttributeError as e:
58        print("Warning: failed customizing compiler ({:s})".format(repr(e)))
59
60    if hasattr(compiler, 'initialize'):
61        try:
62            compiler.initialize()
63        except ValueError as e:
64            print("Warning: failed initializing compiler ({:s})".format(repr(e)))
65
66    cpp_cmd = None
[541ea280]67    if hasattr(compiler, 'preprocessor'):  # for unixccompiler
[19c3d75]68        cpp_cmd = compiler.preprocessor
[541ea280]69    elif hasattr(compiler, 'compiler'):  # for ccompiler
[19c3d75]70        cpp_cmd = compiler.compiler.split()
71        cpp_cmd += ['-E']
[541ea280]72    elif hasattr(compiler, 'cc'):  # for msvccompiler
[19c3d75]73        cpp_cmd = compiler.cc.split()
74        cpp_cmd += ['-E']
75
76    if not cpp_cmd:
77        print("Warning: could not guess preprocessor, using env's CC")
78        cpp_cmd = os.environ.get('CC', 'cc').split()
79        cpp_cmd += ['-E']
[dbdb48a]80    if 'emcc' in cpp_cmd:
81        cpp_cmd += ['-x', 'c'] # emcc defaults to c++, force C language
[19c3d75]82    return cpp_cmd
[ccb9fb5]83
[150ec2d]84
85def get_c_declarations(header=header, usedouble=False):
86    ''' return a dense and preprocessed  string of all c declarations implied by aubio.h
87    '''
[19c3d75]88    cpp_cmd = get_preprocessor()
89
90    macros = [('AUBIO_UNSTABLE', 1)]
[3d14829]91    if usedouble:
92        macros += [('HAVE_AUBIO_DOUBLE', 1)]
[19c3d75]93
94    if not os.path.isfile(header):
95        raise Exception("could not find include file " + header)
96
97    includes = [os.path.dirname(header)]
98    cpp_cmd += distutils.ccompiler.gen_preprocess_options(macros, includes)
99    cpp_cmd += [header]
100
101    print("Running command: {:s}".format(" ".join(cpp_cmd)))
102    proc = subprocess.Popen(cpp_cmd,
[541ea280]103                            stderr=subprocess.PIPE,
104                            stdout=subprocess.PIPE)
[19c3d75]105    assert proc, 'Proc was none'
106    cpp_output = proc.stdout.read()
107    err_output = proc.stderr.read()
108    if not cpp_output:
109        raise Exception("preprocessor output is empty:\n%s" % err_output)
110    elif err_output:
[541ea280]111        print("Warning: preprocessor produced warnings:\n%s" % err_output)
[19c3d75]112    if not isinstance(cpp_output, list):
113        cpp_output = [l.strip() for l in cpp_output.decode('utf8').split('\n')]
[ccb9fb5]114
115    cpp_output = filter(lambda y: len(y) > 1, cpp_output)
[19c3d75]116    cpp_output = list(filter(lambda y: not y.startswith('#'), cpp_output))
[ccb9fb5]117
118    i = 1
119    while 1:
[541ea280]120        if i >= len(cpp_output):
121            break
[50853b0]122        if ('{' in cpp_output[i - 1]) and ('}' not in cpp_output[i - 1]) or (';' not in cpp_output[i - 1]):
[541ea280]123            cpp_output[i] = cpp_output[i - 1] + ' ' + cpp_output[i]
124            cpp_output.pop(i - 1)
[15a43e0]125        elif ('}' in cpp_output[i]):
126            cpp_output[i] = cpp_output[i - 1] + ' ' + cpp_output[i]
127            cpp_output.pop(i - 1)
[ccb9fb5]128        else:
129            i += 1
130
[eea6101]131    # clean pointer notations
132    tmp = []
133    for l in cpp_output:
[2f5f1e4]134        tmp += [l.replace(' *', ' * ')]
[541ea280]135    cpp_output = tmp
[ccb9fb5]136
[150ec2d]137    return cpp_output
[ccb9fb5]138
[541ea280]139
[dad51ce]140def get_cpp_objects_from_c_declarations(c_declarations, skip_objects=None):
[50853b0]141    if skip_objects is None:
[51ca615]142        skip_objects = default_skip_objects
[541ea280]143    typedefs = filter(lambda y: y.startswith('typedef struct _aubio'), c_declarations)
[ccb9fb5]144    cpp_objects = [a.split()[3][:-1] for a in typedefs]
[51ca615]145    cpp_objects_filtered = filter(lambda y: not y[6:-2] in skip_objects, cpp_objects)
146    return cpp_objects_filtered
[ccb9fb5]147
[6cbf34b]148
[50853b0]149def get_all_func_names_from_lib(lib):
[6cbf34b]150    ''' return flat string of all function used in lib
151    '''
152    res = []
[50853b0]153    for _, v in lib.items():
[6cbf34b]154        if isinstance(v, dict):
[50853b0]155            res += get_all_func_names_from_lib(v)
[6cbf34b]156        elif isinstance(v, list):
157            for elem in v:
158                e = elem.split('(')
159                if len(e) < 2:
160                    continue  # not a function
161                fname_part = e[0].strip().split(' ')
162                fname = fname_part[-1]
163                if fname:
164                    res += [fname]
165                else:
166                    raise NameError('gen_lib : weird function: ' + str(e))
[ccb9fb5]167
[6cbf34b]168    return res
[ccb9fb5]169
[41fc24f]170
[6cbf34b]171def generate_lib_from_c_declarations(cpp_objects, c_declarations):
172    ''' returns a lib from given cpp_object names
173
174    a lib is a dict grouping functions by family (onset,pitch...)
175        each eement is itself a dict of functions grouped by puposes as :
176        struct, new, del, do, get, set and other
177    '''
[ccb9fb5]178    lib = {}
179
180    for o in cpp_objects:
[0b2643b]181        shortname = o
[5674833]182        if o[:6] == 'aubio_':
[0b2643b]183            shortname = o[6:-2]  # without aubio_ prefix and _t suffix
[541ea280]184
[c96e6c0]185        lib[shortname] = {'struct': [], 'new': [], 'del': [], 'do': [], 'rdo': [], 'get': [], 'set': [], 'other': []}
[ccb9fb5]186        lib[shortname]['longname'] = o
187        lib[shortname]['shortname'] = shortname
[5674833]188
[0b2643b]189        fullshortname = o[:-2]  # name without _t suffix
190
[150ec2d]191        for fn in c_declarations:
[0b2643b]192            func_name = fn.split('(')[0].strip().split(' ')[-1]
193            if func_name.startswith(fullshortname + '_') or func_name.endswith(fullshortname):
[5674833]194                # print "found", shortname, "in", fn
[ccb9fb5]195                if 'typedef struct ' in fn:
196                    lib[shortname]['struct'].append(fn)
197                elif '_do' in fn:
198                    lib[shortname]['do'].append(fn)
[c96e6c0]199                elif '_rdo' in fn:
200                    lib[shortname]['rdo'].append(fn)
[ccb9fb5]201                elif 'new_' in fn:
202                    lib[shortname]['new'].append(fn)
203                elif 'del_' in fn:
204                    lib[shortname]['del'].append(fn)
205                elif '_get_' in fn:
206                    lib[shortname]['get'].append(fn)
207                elif '_set_' in fn:
208                    lib[shortname]['set'].append(fn)
209                else:
[541ea280]210                    # print "no idea what to do about", fn
[ccb9fb5]211                    lib[shortname]['other'].append(fn)
[41fc24f]212    return lib
[ccb9fb5]213
[541ea280]214
[150ec2d]215def print_c_declarations_results(lib, c_declarations):
216    for fn in c_declarations:
[ccb9fb5]217        found = 0
218        for o in lib:
219            for family in lib[o]:
220                if fn in lib[o][family]:
221                    found = 1
222        if found == 0:
[541ea280]223            print("missing", fn)
[ccb9fb5]224
225    for o in lib:
226        for family in lib[o]:
227            if type(lib[o][family]) == str:
[541ea280]228                print("{:15s} {:10s} {:s}".format(o, family, lib[o][family]))
[ccb9fb5]229            elif len(lib[o][family]) == 1:
[541ea280]230                print("{:15s} {:10s} {:s}".format(o, family, lib[o][family][0]))
[a7f398d]231            else:
[541ea280]232                print("{:15s} {:10s} {:s}".format(o, family, lib[o][family]))
[41fc24f]233
[ccb9fb5]234
[41fc24f]235def generate_external(header=header, output_path=output_path, usedouble=False, overwrite=True):
[541ea280]236    if not os.path.isdir(output_path):
237        os.mkdir(output_path)
238    elif not overwrite:
239        return sorted(glob.glob(os.path.join(output_path, '*.c')))
[41fc24f]240
[150ec2d]241    c_declarations = get_c_declarations(header, usedouble=usedouble)
242    cpp_objects = get_cpp_objects_from_c_declarations(c_declarations)
[41fc24f]243
[6cbf34b]244    lib = generate_lib_from_c_declarations(cpp_objects, c_declarations)
[150ec2d]245    # print_c_declarations_results(lib, c_declarations)
[41fc24f]246
247    sources_list = []
[1167631]248    try:
249        from .gen_code import MappedObject
[19c3d75]250    except (SystemError, ValueError):
[1167631]251        from gen_code import MappedObject
[ccb9fb5]252    for o in lib:
[1167631]253        out = source_header
[541ea280]254        mapped = MappedObject(lib[o], usedouble=usedouble)
[ccb9fb5]255        out += mapped.gen_code()
256        output_file = os.path.join(output_path, 'gen-%s.c' % o)
257        with open(output_file, 'w') as f:
258            f.write(out)
[541ea280]259            print("wrote %s" % output_file)
[ccb9fb5]260            sources_list.append(output_file)
261
[1167631]262    out = source_header
[ccb9fb5]263    out += "#include \"aubio-generated.h\""
264    check_types = "\n     ||  ".join(["PyType_Ready(&Py_%sType) < 0" % o for o in lib])
265    out += """
266
267int generated_types_ready (void)
268{{
269  return ({pycheck_types});
270}}
[541ea280]271""".format(pycheck_types=check_types)
[ccb9fb5]272
273    add_types = "".join(["""
274  Py_INCREF (&Py_{name}Type);
[541ea280]275  PyModule_AddObject(m, "{name}", (PyObject *) & Py_{name}Type);""".format(name=o) for o in lib])
[ccb9fb5]276    out += """
277
278void add_generated_objects ( PyObject *m )
279{{
280{add_types}
281}}
[541ea280]282""".format(add_types=add_types)
[ccb9fb5]283
284    output_file = os.path.join(output_path, 'aubio-generated.c')
285    with open(output_file, 'w') as f:
286        f.write(out)
[541ea280]287        print("wrote %s" % output_file)
[ccb9fb5]288        sources_list.append(output_file)
[a7f398d]289
[b6230d8]290    objlist = "".join(["extern PyTypeObject Py_%sType;\n" % p for p in lib])
[a89ed31]291    out = """// generated list of objects created with gen_external.py
[ccb9fb5]292
[a89ed31]293#include <Python.h>
294"""
295    if usedouble:
296        out += """
297#ifndef HAVE_AUBIO_DOUBLE
298#define HAVE_AUBIO_DOUBLE 1
299#endif
300"""
301    out += """
[ccb9fb5]302{objlist}
303int generated_objects ( void );
304void add_generated_objects( PyObject *m );
[541ea280]305""".format(objlist=objlist)
[ccb9fb5]306
307    output_file = os.path.join(output_path, 'aubio-generated.h')
308    with open(output_file, 'w') as f:
309        f.write(out)
[541ea280]310        print("wrote %s" % output_file)
[ccb9fb5]311        # no need to add header to list of sources
312
[ee7e543]313    return sorted(sources_list)
[ccb9fb5]314
315if __name__ == '__main__':
[541ea280]316    if len(sys.argv) > 1:
317        header = sys.argv[1]
318    if len(sys.argv) > 2:
319        output_path = sys.argv[2]
[1167631]320    generate_external(header, output_path)
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