def __init__(self, header, data, dpds=None, seek=None, needs_swap=False):
self.header_raw = header
self.data_raw = data
self.dpds_raw = dpds
self.seek_raw = seek
self.needs_swap = needs_swap
h_s = BinaryStream(data=self.header_raw, big_endian=needs_swap)
waveformatex_size = h_s.calc_size(self._waveformatex)
(self.h_format_tag, self.h_channels, self.h_samples_per_sec,
self.h_avg_bytes_per_sec, self.h_block_align,
self.h_bits_per_sample) = h_s.unpack(self._waveformatex)
header_size = waveformatex_size
# do we have a WAVEFORMATEX
self.h_size = None
if len(self.header_raw) >= waveformatex_size + 2:
self.h_size = h_s.read_uint16()
header_size += 2
if self.h_format_tag == WAVE_FORMAT_XMA2:
waveformat_xma2_size = h_s.calc_size(self._waveformat_xma2)
if self.h_size != waveformat_xma2_size:
raise ReaderError(
"Unknown cbSize for XMA2WAVEFORMATEX: {}".format(
self.h_size))
(self.hx_num_streams, self.hx_channel_mask,
self.hx_samples_encoded, self.hx_bytes_per_block,
self.hx_play_begin, self.hx_play_length, self.hx_loop_begin,
self.hx_loop_length, self.hx_loop_count,
self.hx_encoder_version,
self.hx_block_count) = h_s.unpack(self._waveformat_xma2)
header_size += waveformat_xma2_size
elif self.h_format_tag == WAVE_FORMAT_EXTENSIBLE:
waveformat_extensible_size = h_s.calc_size(
self._waveformat_extensible)
if self.h_size < waveformat_extensible_size:
raise ReaderError(
"Invalid cbSize for WAVEFORMATEXTENSIBLE: {}".format(
self.h_size))
(self.he_valid_bits_per_sample, self.he_channel_mask,
he_subformat_bytes) = h_s.unpack(self._waveformat_extensible)
self.he_subformat = UUID(bytes_le=he_subformat_bytes)
header_size += waveformat_extensible_size
self.he_remainder = None
if self.h_size > waveformat_extensible_size:
self.he_remainder = h_s.read(self.h_size -
waveformat_extensible_size)
header_size += self.h_size - waveformat_extensible_size
raise ReaderError(
"Extra bytes in WAVEFORMATEXTENSIBLE: {}".format(
len(self.he_remainder)))
self.h_remainder = h_s.read()
if len(self.h_remainder):
header_size += len(self.h_remainder)
if header_size != len(self.header_raw):
raise ReaderError("Header size mismatch: {} != {}".format(
header_size, len(self.header_raw)))
def __init__(self, header, data, dpds=None, seek=None, needs_swap=False):
self.header_raw = header
self.data_raw = data
self.dpds_raw = dpds
self.seek_raw = seek
self.needs_swap = needs_swap
h_s = BinaryStream(data=self.header_raw, big_endian=needs_swap)
waveformatex_size = h_s.calc_size(self._waveformatex)
(self.h_format_tag, self.h_channels, self.h_samples_per_sec, self.h_avg_bytes_per_sec, self.h_block_align,
self.h_bits_per_sample) = h_s.unpack(self._waveformatex)
header_size = waveformatex_size
# do we have a WAVEFORMATEX
self.h_size = None
if len(self.header_raw) >= waveformatex_size + 2:
self.h_size = h_s.read_uint16()
header_size += 2
if self.h_format_tag == WAVE_FORMAT_XMA2:
waveformat_xma2_size = h_s.calc_size(self._waveformat_xma2)
if self.h_size != waveformat_xma2_size:
raise ReaderError("Unknown cbSize for XMA2WAVEFORMATEX: {}".format(self.h_size))
(self.hx_num_streams, self.hx_channel_mask, self.hx_samples_encoded, self.hx_bytes_per_block,
self.hx_play_begin, self.hx_play_length, self.hx_loop_begin, self.hx_loop_length, self.hx_loop_count,
self.hx_encoder_version, self.hx_block_count) = h_s.unpack(self._waveformat_xma2)
header_size += waveformat_xma2_size
elif self.h_format_tag == WAVE_FORMAT_EXTENSIBLE:
waveformat_extensible_size = h_s.calc_size(self._waveformat_extensible)
if self.h_size < waveformat_extensible_size:
raise ReaderError("Invalid cbSize for WAVEFORMATEXTENSIBLE: {}".format(self.h_size))
(self.he_valid_bits_per_sample, self.he_channel_mask,
he_subformat_bytes) = h_s.unpack(self._waveformat_extensible)
self.he_subformat = UUID(bytes_le=he_subformat_bytes)
header_size += waveformat_extensible_size
self.he_remainder = None
if self.h_size > waveformat_extensible_size:
self.he_remainder = h_s.read(self.h_size - waveformat_extensible_size)
header_size += self.h_size - waveformat_extensible_size
raise ReaderError("Extra bytes in WAVEFORMATEXTENSIBLE: {}".format(len(self.he_remainder)))
self.h_remainder = h_s.read()
if len(self.h_remainder):
header_size += len(self.h_remainder)
if header_size != len(self.header_raw):
raise ReaderError("Header size mismatch: {} != {}".format(header_size, len(self.header_raw)))
