| 1 | import distutils.ccompiler |
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| 2 | import sys |
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| 3 | import os |
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| 4 | import subprocess |
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| 5 | import glob |
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| 6 | from distutils.sysconfig import customize_compiler |
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| 7 | from gen_code import MappedObject |
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| 8 | |
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| 9 | header = os.path.join('src', 'aubio.h') |
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| 10 | output_path = os.path.join('python', 'gen') |
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| 11 | |
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| 12 | source_header = """// this file is generated! do not modify |
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| 13 | #include "aubio-types.h" |
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| 14 | """ |
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| 15 | |
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| 16 | default_skip_objects = [ |
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| 17 | # already in ext/ |
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| 18 | 'fft', |
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| 19 | 'pvoc', |
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| 20 | 'filter', |
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| 21 | 'filterbank', |
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| 22 | # AUBIO_UNSTABLE |
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| 23 | 'hist', |
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| 24 | 'parameter', |
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| 25 | 'scale', |
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| 26 | 'beattracking', |
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| 27 | 'resampler', |
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| 28 | 'peakpicker', |
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| 29 | 'pitchfcomb', |
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| 30 | 'pitchmcomb', |
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| 31 | 'pitchschmitt', |
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| 32 | 'pitchspecacf', |
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| 33 | 'pitchyin', |
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| 34 | 'pitchyinfft', |
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| 35 | 'pitchyinfast', |
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| 36 | 'sink', |
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| 37 | 'sink_apple_audio', |
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| 38 | 'sink_sndfile', |
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| 39 | 'sink_wavwrite', |
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| 40 | #'mfcc', |
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| 41 | 'source', |
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| 42 | 'source_apple_audio', |
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| 43 | 'source_sndfile', |
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| 44 | 'source_avcodec', |
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| 45 | 'source_wavread', |
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| 46 | #'sampler', |
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| 47 | 'audio_unit', |
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| 48 | 'spectral_whitening', |
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| 49 | ] |
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| 50 | |
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| 51 | |
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| 52 | def get_preprocessor(): |
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| 53 | # findout which compiler to use |
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| 54 | compiler_name = distutils.ccompiler.get_default_compiler() |
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| 55 | compiler = distutils.ccompiler.new_compiler(compiler=compiler_name) |
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| 56 | try: |
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| 57 | customize_compiler(compiler) |
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| 58 | except AttributeError as e: |
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| 59 | print("Warning: failed customizing compiler ({:s})".format(repr(e))) |
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| 60 | |
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| 61 | if hasattr(compiler, 'initialize'): |
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| 62 | try: |
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| 63 | compiler.initialize() |
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| 64 | except ValueError as e: |
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| 65 | print("Warning: failed initializing compiler ({:s})".format(repr(e))) |
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| 66 | |
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| 67 | cpp_cmd = None |
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| 68 | if hasattr(compiler, 'preprocessor'): # for unixccompiler |
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| 69 | cpp_cmd = compiler.preprocessor |
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| 70 | elif hasattr(compiler, 'compiler'): # for ccompiler |
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| 71 | cpp_cmd = compiler.compiler.split() |
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| 72 | cpp_cmd += ['-E'] |
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| 73 | elif hasattr(compiler, 'cc'): # for msvccompiler |
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| 74 | cpp_cmd = compiler.cc.split() |
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| 75 | cpp_cmd += ['-E'] |
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| 76 | |
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| 77 | if not cpp_cmd: |
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| 78 | print("Warning: could not guess preprocessor, using env's CC") |
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| 79 | cpp_cmd = os.environ.get('CC', 'cc').split() |
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| 80 | cpp_cmd += ['-E'] |
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| 81 | if 'emcc' in cpp_cmd: |
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| 82 | cpp_cmd += ['-x', 'c'] # emcc defaults to c++, force C language |
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| 83 | return cpp_cmd |
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| 84 | |
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| 85 | |
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| 86 | def get_c_declarations(header=header, usedouble=False): |
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| 87 | ''' return a dense and preprocessed string of all c declarations implied by aubio.h |
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| 88 | ''' |
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| 89 | cpp_output = get_cpp_output(header=header, usedouble=usedouble) |
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| 90 | return filter_cpp_output (cpp_output) |
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| 91 | |
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| 92 | |
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| 93 | def get_cpp_output(header=header, usedouble=False): |
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| 94 | ''' find and run a C pre-processor on aubio.h ''' |
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| 95 | cpp_cmd = get_preprocessor() |
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| 96 | |
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| 97 | macros = [('AUBIO_UNSTABLE', 1)] |
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| 98 | if usedouble: |
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| 99 | macros += [('HAVE_AUBIO_DOUBLE', 1)] |
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| 100 | |
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| 101 | if not os.path.isfile(header): |
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| 102 | raise Exception("could not find include file " + header) |
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| 103 | |
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| 104 | includes = [os.path.dirname(header)] |
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| 105 | cpp_cmd += distutils.ccompiler.gen_preprocess_options(macros, includes) |
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| 106 | cpp_cmd += [header] |
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| 107 | |
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| 108 | print("Running command: {:s}".format(" ".join(cpp_cmd))) |
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| 109 | proc = subprocess.Popen(cpp_cmd, |
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| 110 | stderr=subprocess.PIPE, |
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| 111 | stdout=subprocess.PIPE) |
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| 112 | assert proc, 'Proc was none' |
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| 113 | cpp_output = proc.stdout.read() |
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| 114 | err_output = proc.stderr.read() |
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| 115 | if err_output: |
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| 116 | print("Warning: preprocessor produced errors or warnings:\n%s" \ |
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| 117 | % err_output.decode('utf8')) |
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| 118 | if not cpp_output: |
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| 119 | raise_msg = "preprocessor output is empty! Running command " \ |
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| 120 | + "\"%s\" failed" % " ".join(cpp_cmd) |
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| 121 | if err_output: |
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| 122 | raise_msg += " with stderr: \"%s\"" % err_output.decode('utf8') |
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| 123 | else: |
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| 124 | raise_msg += " with no stdout or stderr" |
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| 125 | raise Exception(raise_msg) |
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| 126 | if not isinstance(cpp_output, list): |
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| 127 | cpp_output = [l.strip() for l in cpp_output.decode('utf8').split('\n')] |
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| 128 | |
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| 129 | return cpp_output |
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| 130 | |
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| 131 | def filter_cpp_output(cpp_raw_output): |
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| 132 | ''' prepare cpp-output for parsing ''' |
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| 133 | cpp_output = filter(lambda y: len(y) > 1, cpp_raw_output) |
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| 134 | cpp_output = list(filter(lambda y: not y.startswith('#'), cpp_output)) |
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| 135 | |
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| 136 | i = 1 |
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| 137 | while 1: |
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| 138 | if i >= len(cpp_output): |
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| 139 | break |
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| 140 | if ('{' in cpp_output[i - 1]) and ('}' not in cpp_output[i - 1]) or (';' not in cpp_output[i - 1]): |
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| 141 | cpp_output[i] = cpp_output[i - 1] + ' ' + cpp_output[i] |
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| 142 | cpp_output.pop(i - 1) |
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| 143 | elif ('}' in cpp_output[i]): |
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| 144 | cpp_output[i] = cpp_output[i - 1] + ' ' + cpp_output[i] |
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| 145 | cpp_output.pop(i - 1) |
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| 146 | else: |
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| 147 | i += 1 |
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| 148 | |
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| 149 | # clean pointer notations |
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| 150 | tmp = [] |
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| 151 | for l in cpp_output: |
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| 152 | tmp += [l.replace(' *', ' * ')] |
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| 153 | cpp_output = tmp |
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| 154 | |
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| 155 | return cpp_output |
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| 156 | |
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| 157 | |
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| 158 | def get_cpp_objects_from_c_declarations(c_declarations, skip_objects=None): |
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| 159 | if skip_objects is None: |
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| 160 | skip_objects = default_skip_objects |
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| 161 | typedefs = filter(lambda y: y.startswith('typedef struct _aubio'), c_declarations) |
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| 162 | cpp_objects = [a.split()[3][:-1] for a in typedefs] |
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| 163 | cpp_objects_filtered = filter(lambda y: not y[6:-2] in skip_objects, cpp_objects) |
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| 164 | return cpp_objects_filtered |
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| 165 | |
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| 166 | |
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| 167 | def get_all_func_names_from_lib(lib): |
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| 168 | ''' return flat string of all function used in lib |
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| 169 | ''' |
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| 170 | res = [] |
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| 171 | for _, v in lib.items(): |
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| 172 | if isinstance(v, dict): |
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| 173 | res += get_all_func_names_from_lib(v) |
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| 174 | elif isinstance(v, list): |
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| 175 | for elem in v: |
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| 176 | e = elem.split('(') |
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| 177 | if len(e) < 2: |
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| 178 | continue # not a function |
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| 179 | fname_part = e[0].strip().split(' ') |
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| 180 | fname = fname_part[-1] |
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| 181 | if fname: |
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| 182 | res += [fname] |
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| 183 | else: |
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| 184 | raise NameError('gen_lib : weird function: ' + str(e)) |
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| 185 | |
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| 186 | return res |
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| 187 | |
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| 188 | |
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| 189 | def generate_lib_from_c_declarations(cpp_objects, c_declarations): |
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| 190 | ''' returns a lib from given cpp_object names |
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| 191 | |
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| 192 | a lib is a dict grouping functions by family (onset,pitch...) |
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| 193 | each eement is itself a dict of functions grouped by puposes as : |
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| 194 | struct, new, del, do, get, set and other |
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| 195 | ''' |
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| 196 | lib = {} |
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| 197 | |
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| 198 | for o in cpp_objects: |
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| 199 | shortname = o |
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| 200 | if o[:6] == 'aubio_': |
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| 201 | shortname = o[6:-2] # without aubio_ prefix and _t suffix |
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| 202 | |
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| 203 | lib[shortname] = {'struct': [], 'new': [], 'del': [], 'do': [], 'rdo': [], 'get': [], 'set': [], 'other': []} |
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| 204 | lib[shortname]['longname'] = o |
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| 205 | lib[shortname]['shortname'] = shortname |
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| 206 | |
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| 207 | fullshortname = o[:-2] # name without _t suffix |
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| 208 | |
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| 209 | for fn in c_declarations: |
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| 210 | func_name = fn.split('(')[0].strip().split(' ')[-1] |
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| 211 | if func_name.startswith(fullshortname + '_') or func_name.endswith(fullshortname): |
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| 212 | # print "found", shortname, "in", fn |
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| 213 | if 'typedef struct ' in fn: |
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| 214 | lib[shortname]['struct'].append(fn) |
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| 215 | elif '_do' in fn: |
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| 216 | lib[shortname]['do'].append(fn) |
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| 217 | elif '_rdo' in fn: |
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| 218 | lib[shortname]['rdo'].append(fn) |
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| 219 | elif 'new_' in fn: |
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| 220 | lib[shortname]['new'].append(fn) |
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| 221 | elif 'del_' in fn: |
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| 222 | lib[shortname]['del'].append(fn) |
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| 223 | elif '_get_' in fn: |
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| 224 | lib[shortname]['get'].append(fn) |
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| 225 | elif '_set_' in fn: |
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| 226 | lib[shortname]['set'].append(fn) |
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| 227 | else: |
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| 228 | # print "no idea what to do about", fn |
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| 229 | lib[shortname]['other'].append(fn) |
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| 230 | return lib |
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| 231 | |
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| 232 | |
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| 233 | def print_c_declarations_results(lib, c_declarations): |
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| 234 | for fn in c_declarations: |
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| 235 | found = 0 |
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| 236 | for o in lib: |
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| 237 | for family in lib[o]: |
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| 238 | if fn in lib[o][family]: |
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| 239 | found = 1 |
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| 240 | if found == 0: |
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| 241 | print("missing", fn) |
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| 242 | |
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| 243 | for o in lib: |
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| 244 | for family in lib[o]: |
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| 245 | if type(lib[o][family]) == str: |
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| 246 | print("{:15s} {:10s} {:s}".format(o, family, lib[o][family])) |
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| 247 | elif len(lib[o][family]) == 1: |
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| 248 | print("{:15s} {:10s} {:s}".format(o, family, lib[o][family][0])) |
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| 249 | else: |
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| 250 | print("{:15s} {:10s} {:s}".format(o, family, lib[o][family])) |
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| 251 | |
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| 252 | |
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| 253 | def generate_external(header=header, output_path=output_path, usedouble=False, overwrite=True): |
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| 254 | if not os.path.isdir(output_path): |
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| 255 | os.mkdir(output_path) |
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| 256 | elif not overwrite: |
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| 257 | return sorted(glob.glob(os.path.join(output_path, '*.c'))) |
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| 258 | |
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| 259 | c_declarations = get_c_declarations(header, usedouble=usedouble) |
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| 260 | cpp_objects = get_cpp_objects_from_c_declarations(c_declarations) |
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| 261 | |
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| 262 | lib = generate_lib_from_c_declarations(cpp_objects, c_declarations) |
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| 263 | # print_c_declarations_results(lib, c_declarations) |
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| 264 | |
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| 265 | sources_list = [] |
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| 266 | for o in lib: |
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| 267 | out = source_header |
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| 268 | mapped = MappedObject(lib[o], usedouble=usedouble) |
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| 269 | out += mapped.gen_code() |
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| 270 | output_file = os.path.join(output_path, 'gen-%s.c' % o) |
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| 271 | with open(output_file, 'w') as f: |
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| 272 | f.write(out) |
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| 273 | print("wrote %s" % output_file) |
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| 274 | sources_list.append(output_file) |
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| 275 | |
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| 276 | out = source_header |
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| 277 | out += "#include \"aubio-generated.h\"" |
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| 278 | check_types = "\n || ".join(["PyType_Ready(&Py_%sType) < 0" % o for o in lib]) |
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| 279 | out += """ |
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| 280 | |
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| 281 | int generated_types_ready (void) |
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| 282 | {{ |
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| 283 | return ({pycheck_types}); |
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| 284 | }} |
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| 285 | """.format(pycheck_types=check_types) |
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| 286 | |
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| 287 | add_types = "".join([""" |
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| 288 | Py_INCREF (&Py_{name}Type); |
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| 289 | PyModule_AddObject(m, "{name}", (PyObject *) & Py_{name}Type);""".format(name=o) for o in lib]) |
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| 290 | out += """ |
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| 291 | |
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| 292 | void add_generated_objects ( PyObject *m ) |
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| 293 | {{ |
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| 294 | {add_types} |
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| 295 | }} |
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| 296 | """.format(add_types=add_types) |
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| 297 | |
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| 298 | output_file = os.path.join(output_path, 'aubio-generated.c') |
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| 299 | with open(output_file, 'w') as f: |
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| 300 | f.write(out) |
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| 301 | print("wrote %s" % output_file) |
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| 302 | sources_list.append(output_file) |
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| 303 | |
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| 304 | objlist = "".join(["extern PyTypeObject Py_%sType;\n" % p for p in lib]) |
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| 305 | out = """// generated list of objects created with gen_external.py |
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| 306 | |
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| 307 | #include <Python.h> |
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| 308 | """ |
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| 309 | if usedouble: |
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| 310 | out += """ |
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| 311 | #ifndef HAVE_AUBIO_DOUBLE |
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| 312 | #define HAVE_AUBIO_DOUBLE 1 |
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| 313 | #endif |
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| 314 | """ |
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| 315 | out += """ |
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| 316 | {objlist} |
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| 317 | int generated_objects ( void ); |
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| 318 | void add_generated_objects( PyObject *m ); |
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| 319 | """.format(objlist=objlist) |
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| 320 | |
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| 321 | output_file = os.path.join(output_path, 'aubio-generated.h') |
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| 322 | with open(output_file, 'w') as f: |
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| 323 | f.write(out) |
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| 324 | print("wrote %s" % output_file) |
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| 325 | # no need to add header to list of sources |
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| 326 | |
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| 327 | return sorted(sources_list) |
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| 328 | |
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| 329 | if __name__ == '__main__': |
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| 330 | if len(sys.argv) > 1: |
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| 331 | header = sys.argv[1] |
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| 332 | if len(sys.argv) > 2: |
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| 333 | output_path = sys.argv[2] |
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| 334 | generate_external(header, output_path) |
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