def get_recorded_binary(self, remote_path, record_format):
"""Gets remote recorded file binary.
Reads file from Chameleon host and handles scale if needed.
@param remote_path: The path to the recorded file on Chameleon.
@param record_format: The recorded data format. A dict containing
file_type: 'raw' or 'wav'.
sample_format: 'S32_LE' for 32-bit signed integer in
little-endian. Refer to aplay manpage for
other formats.
channel: channel number.
rate: sampling rate.
@returns: The recorded binary.
"""
with tempfile.NamedTemporaryFile(prefix='recorded_') as f:
self._chameleon_board.host.get_file(remote_path, f.name)
# Handles scaling using audio_test_data.
test_data = audio_test_data.AudioTestData(record_format, f.name)
converted_test_data = test_data.convert(record_format, self.scale)
try:
return converted_test_data.get_binary()
finally:
converted_test_data.delete()
def get_recorded_binary(self, remote_path, record_format):
"""Gets remote recorded file binary from Cros device..
Gets and reads recorded file from Cros device.
The argument 'record_format' is what API user want on output.
The real file format of file at 'remote_path' can be another source
format. This method handles the format conversion from source format
into record_format, and returns the converted binary.
Handle the format conversion from source format into record_format.
@param remote_path: The path to the recorded file on Cros device.
@param record_format: The data format of returned binary.
A dict containing
file_type: 'raw' or 'wav'.
sample_format: 'S32_LE' for 32-bit signed integer in
little-endian. Refer to aplay manpage for
other formats.
channel: channel number.
rate: sampling rate.
@returns: The recorded binary.
@raises: CrosInputWidgetHandlerError if record_format is not correct.
"""
if record_format != self._DEFAULT_DATA_FORMAT:
raise audio_widget.CrosInputWidgetHandlerError(
'Record format %r is not valid' % record_format)
ext = '.' + self._SOURCE_FORMAT['file_type']
with tempfile.NamedTemporaryFile(prefix='recorded_', suffix=ext) as f:
self._audio_facade.get_recorded_file(remote_path, f.name)
# Handles conversion from source format into record_format.
test_data = audio_test_data.AudioTestData(self._SOURCE_FORMAT,
f.name)
converted_test_data = test_data.convert(record_format, 1.0)
try:
return converted_test_data.get_binary()
finally:
converted_test_data.delete()