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Move all named constants to cdef? #42

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196 changes: 116 additions & 80 deletions pysoundfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,74 @@
_ffi = _FFI()
_ffi.cdef("""
enum
{
{ /* Major formats. */
SF_FORMAT_WAV = 0x010000, /* Microsoft WAV format (little endian default). */
SF_FORMAT_AIFF = 0x020000, /* Apple/SGI AIFF format (big endian). */
SF_FORMAT_AU = 0x030000, /* Sun/NeXT AU format (big endian). */
SF_FORMAT_RAW = 0x040000, /* RAW PCM data. */
SF_FORMAT_PAF = 0x050000, /* Ensoniq PARIS file format. */
SF_FORMAT_SVX = 0x060000, /* Amiga IFF / SVX8 / SV16 format. */
SF_FORMAT_NIST = 0x070000, /* Sphere NIST format. */
SF_FORMAT_VOC = 0x080000, /* VOC files. */
SF_FORMAT_IRCAM = 0x0A0000, /* Berkeley/IRCAM/CARL */
SF_FORMAT_W64 = 0x0B0000, /* Sonic Foundry's 64 bit RIFF/WAV */
SF_FORMAT_MAT4 = 0x0C0000, /* Matlab (tm) V4.2 / GNU Octave 2.0 */
SF_FORMAT_MAT5 = 0x0D0000, /* Matlab (tm) V5.0 / GNU Octave 2.1 */
SF_FORMAT_PVF = 0x0E0000, /* Portable Voice Format */
SF_FORMAT_XI = 0x0F0000, /* Fasttracker 2 Extended Instrument */
SF_FORMAT_HTK = 0x100000, /* HMM Tool Kit format */
SF_FORMAT_SDS = 0x110000, /* Midi Sample Dump Standard */
SF_FORMAT_AVR = 0x120000, /* Audio Visual Research */
SF_FORMAT_WAVEX = 0x130000, /* MS WAVE with WAVEFORMATEX */
SF_FORMAT_SD2 = 0x160000, /* Sound Designer 2 */
SF_FORMAT_FLAC = 0x170000, /* FLAC lossless file format */
SF_FORMAT_CAF = 0x180000, /* Core Audio File format */
SF_FORMAT_WVE = 0x190000, /* Psion WVE format */
SF_FORMAT_OGG = 0x200000, /* Xiph OGG container */
SF_FORMAT_MPC2K = 0x210000, /* Akai MPC 2000 sampler */
SF_FORMAT_RF64 = 0x220000, /* RF64 WAV file */

/* Subtypes from here on. */

SF_FORMAT_PCM_S8 = 0x0001, /* Signed 8 bit data */
SF_FORMAT_PCM_16 = 0x0002, /* Signed 16 bit data */
SF_FORMAT_PCM_24 = 0x0003, /* Signed 24 bit data */
SF_FORMAT_PCM_32 = 0x0004, /* Signed 32 bit data */

SF_FORMAT_PCM_U8 = 0x0005, /* Unsigned 8 bit data (WAV and RAW only) */

SF_FORMAT_FLOAT = 0x0006, /* 32 bit float data */
SF_FORMAT_DOUBLE = 0x0007, /* 64 bit float data */

SF_FORMAT_ULAW = 0x0010, /* U-Law encoded. */
SF_FORMAT_ALAW = 0x0011, /* A-Law encoded. */
SF_FORMAT_IMA_ADPCM = 0x0012, /* IMA ADPCM. */
SF_FORMAT_MS_ADPCM = 0x0013, /* Microsoft ADPCM. */

SF_FORMAT_GSM610 = 0x0020, /* GSM 6.10 encoding. */
SF_FORMAT_VOX_ADPCM = 0x0021, /* OKI / Dialogix ADPCM */

SF_FORMAT_G721_32 = 0x0030, /* 32kbs G721 ADPCM encoding. */
SF_FORMAT_G723_24 = 0x0031, /* 24kbs G723 ADPCM encoding. */
SF_FORMAT_G723_40 = 0x0032, /* 40kbs G723 ADPCM encoding. */

SF_FORMAT_DWVW_12 = 0x0040, /* 12 bit Delta Width Variable Word encoding. */
SF_FORMAT_DWVW_16 = 0x0041, /* 16 bit Delta Width Variable Word encoding. */
SF_FORMAT_DWVW_24 = 0x0042, /* 24 bit Delta Width Variable Word encoding. */
SF_FORMAT_DWVW_N = 0x0043, /* N bit Delta Width Variable Word encoding. */

SF_FORMAT_DPCM_8 = 0x0050, /* 8 bit differential PCM (XI only) */
SF_FORMAT_DPCM_16 = 0x0051, /* 16 bit differential PCM (XI only) */

SF_FORMAT_VORBIS = 0x0060, /* Xiph Vorbis encoding. */

/* Endian-ness options. */

SF_ENDIAN_FILE = 0x00000000, /* Default file endian-ness. */
SF_ENDIAN_LITTLE = 0x10000000, /* Force little endian-ness. */
SF_ENDIAN_BIG = 0x20000000, /* Force big endian-ness. */
SF_ENDIAN_CPU = 0x30000000, /* Force CPU endian-ness. */

SF_FORMAT_SUBMASK = 0x0000FFFF,
SF_FORMAT_TYPEMASK = 0x0FFF0000,
SF_FORMAT_ENDMASK = 0x30000000
Expand All @@ -59,10 +126,34 @@
SFC_GET_FORMAT_SUBTYPE = 0x1033,
} ;

/*
** String types that can be set and read from files. Not all file types
** support this and even the file types which support one, may not support
** all string types.
*/

enum
{
{ SF_STR_TITLE = 0x01,
SF_STR_COPYRIGHT = 0x02,
SF_STR_SOFTWARE = 0x03,
SF_STR_ARTIST = 0x04,
SF_STR_COMMENT = 0x05,
SF_STR_DATE = 0x06,
SF_STR_ALBUM = 0x07,
SF_STR_LICENSE = 0x08,
SF_STR_TRACKNUMBER = 0x09,
SF_STR_GENRE = 0x10
} ;

enum
{ /* True and false */
SF_FALSE = 0,
SF_TRUE = 1,

/* Modes for opening files. */
SFM_READ = 0x10,
SFM_WRITE = 0x20,
SFM_RDWR = 0x30,
} ;

typedef int64_t sf_count_t ;
Expand Down Expand Up @@ -147,85 +238,32 @@
} SF_FORMAT_INFO ;
""")

_open_modes = {
'r': 0x10,
'w': 0x20,
'rw': 0x30,
}

_str_types = {
'title': 0x01,
'copyright': 0x02,
'software': 0x03,
'artist': 0x04,
'comment': 0x05,
'date': 0x06,
'album': 0x07,
'license': 0x08,
'tracknumber': 0x09,
'genre': 0x10,
}

_formats = {
'WAV': 0x010000, # Microsoft WAV format (little endian default).
'AIFF': 0x020000, # Apple/SGI AIFF format (big endian).
'AU': 0x030000, # Sun/NeXT AU format (big endian).
'RAW': 0x040000, # RAW PCM data.
'PAF': 0x050000, # Ensoniq PARIS file format.
'SVX': 0x060000, # Amiga IFF / SVX8 / SV16 format.
'NIST': 0x070000, # Sphere NIST format.
'VOC': 0x080000, # VOC files.
'IRCAM': 0x0A0000, # Berkeley/IRCAM/CARL
'W64': 0x0B0000, # Sonic Foundry's 64 bit RIFF/WAV
'MAT4': 0x0C0000, # Matlab (tm) V4.2 / GNU Octave 2.0
'MAT5': 0x0D0000, # Matlab (tm) V5.0 / GNU Octave 2.1
'PVF': 0x0E0000, # Portable Voice Format
'XI': 0x0F0000, # Fasttracker 2 Extended Instrument
'HTK': 0x100000, # HMM Tool Kit format
'SDS': 0x110000, # Midi Sample Dump Standard
'AVR': 0x120000, # Audio Visual Research
'WAVEX': 0x130000, # MS WAVE with WAVEFORMATEX
'SD2': 0x160000, # Sound Designer 2
'FLAC': 0x170000, # FLAC lossless file format
'CAF': 0x180000, # Core Audio File format
'WVE': 0x190000, # Psion WVE format
'OGG': 0x200000, # Xiph OGG container
'MPC2K': 0x210000, # Akai MPC 2000 sampler
'RF64': 0x220000, # RF64 WAV file
}
_snd = _ffi.dlopen('sndfile')

_subtypes = {
'PCM_S8': 0x0001, # Signed 8 bit data
'PCM_16': 0x0002, # Signed 16 bit data
'PCM_24': 0x0003, # Signed 24 bit data
'PCM_32': 0x0004, # Signed 32 bit data
'PCM_U8': 0x0005, # Unsigned 8 bit data (WAV and RAW only)
'FLOAT': 0x0006, # 32 bit float data
'DOUBLE': 0x0007, # 64 bit float data
'ULAW': 0x0010, # U-Law encoded.
'ALAW': 0x0011, # A-Law encoded.
'IMA_ADPCM': 0x0012, # IMA ADPCM.
'MS_ADPCM': 0x0013, # Microsoft ADPCM.
'GSM610': 0x0020, # GSM 6.10 encoding.
'VOX_ADPCM': 0x0021, # OKI / Dialogix ADPCM
'G721_32': 0x0030, # 32kbs G721 ADPCM encoding.
'G723_24': 0x0031, # 24kbs G723 ADPCM encoding.
'G723_40': 0x0032, # 40kbs G723 ADPCM encoding.
'DWVW_12': 0x0040, # 12 bit Delta Width Variable Word encoding.
'DWVW_16': 0x0041, # 16 bit Delta Width Variable Word encoding.
'DWVW_24': 0x0042, # 24 bit Delta Width Variable Word encoding.
'DWVW_N': 0x0043, # N bit Delta Width Variable Word encoding.
'DPCM_8': 0x0050, # 8 bit differential PCM (XI only)
'DPCM_16': 0x0051, # 16 bit differential PCM (XI only)
'VORBIS': 0x0060, # Xiph Vorbis encoding.
_open_modes = {
'r': _snd.SFM_READ,
'w': _snd.SFM_WRITE,
'rw': _snd.SFM_RDWR,
}

_endians = {
'FILE': 0x00000000, # Default file endian-ness.
'LITTLE': 0x10000000, # Force little endian-ness.
'BIG': 0x20000000, # Force big endian-ness.
'CPU': 0x30000000, # Force CPU endian-ness.
}
_formats = {}
_subtypes = {}
_endians = {}
_str_types = {}

for k, v in vars(_snd).items():
if k.startswith('SF_FORMAT_'):
name = k[len('SF_FORMAT_'):]
if v & _snd.SF_FORMAT_TYPEMASK:
_formats[name] = v
elif v & _snd.SF_FORMAT_SUBMASK:
_subtypes[name] = v
elif k.startswith('SF_ENDIAN_'):
_endians[k[len('SF_ENDIAN_'):]] = v
elif k.startswith('SF_STR_'):
_str_types[k[len('SF_STR_'):].lower()] = v

del k, v, name

# libsndfile doesn't specify default subtypes, these are somehow arbitrary:
_default_subtypes = {
Expand Down Expand Up @@ -263,8 +301,6 @@
_np.dtype('int16'): 'short'
}

_snd = _ffi.dlopen('sndfile')


class SoundFile(object):

Expand Down