def test_same_data_as_vorbis_file_using_as_array():
import numpy
# Load the demonstration file that is exactly 5 seconds long
filename = "../examples/left-right-demo-5s.ogg"
# Open the file using VorbisFile to read the entire file into memory
vorbis_file = pyogg.VorbisFile(filename)
# Open the file (again) using VorbisFileStream, which does not read
# the entire file immediately.
vorbis_stream = pyogg.VorbisFileStream(filename)
# Loop through the VorbisFileStream until we've read all the data
buf_all = None
while True:
# Read the next part of the stream
buf = vorbis_stream.get_buffer_as_array()
# Check if we've reached the end of the stream
if buf is None:
break
# Add the bytes we've read to buf_all. Note that this
# technique isn't efficient and shouldn't be used in
# production code.
if buf_all is None:
buf_all = buf
else:
buf_all = numpy.concatenate((buf_all, buf))
# Check that every byte is identical for both buffers
assert numpy.all(buf_all == vorbis_file.as_array())
def test_same_data_as_vorbis_file():
# Load the demonstration file that is exactly 5 seconds long
filename = "../examples/left-right-demo-5s.ogg"
# Open the file using VorbisFile to read the entire file into memory
vorbis_file = pyogg.VorbisFile(filename)
# Open the file (again) using VorbisFileStream, which does not read
# the entire file immediately.
vorbis_stream = pyogg.VorbisFileStream(filename)
# Loop through the VorbisFileStream until we've read all the data
buf_all = bytes()
while True:
# Read the next part of the stream
buf = vorbis_stream.get_buffer()
# Check if we've reached the end of the stream
if buf is None:
break
# Add the bytes we've read to buf_all. Note that this
# technique isn't efficient and shouldn't be used in
# production code.
buf_all += buf
assert buf_all == vorbis_file.buffer
def test_total_length():
# Load the demonstration file that is exactly 5 seconds long
filename = "../examples/left-right-demo-5s.ogg"
# Open the file using VorbisFileStream, which does not read the entire
# file immediately.
vorbis_stream = pyogg.VorbisFileStream(filename)
# Loop through the VorbisFileStream until we've read all the data
samples_read = 0
while True:
# Read the next part of the stream
buf = vorbis_stream.get_buffer_as_array()
# Check if we've reached the end of the stream
if buf is None:
break
# Increment the number of samples read
samples_read += buf.shape[0]
expected_duration_seconds = 5
samples_per_second = vorbis_stream.frequency
expected_duration_samples = (expected_duration_seconds *
samples_per_second)
duration_samples = samples_read
assert duration_samples == expected_duration_samples
vorbis_file_stream_filename = "left-right-demo-5s.ogg"
# Open the file using VorbisFile, which reads the entire file
# immediately and places it into an internal buffer.
start_time = time.time()
vorbis_file = pyogg.VorbisFile(vorbis_file_filename)
end_time = time.time()
duration = (end_time - start_time) * 1000
array = vorbis_file.as_array()
array_index = 0
print("Read {:d} samples from VorbisFile (in {:.1f} milliseconds).".format(
len(array), duration))
# Open the file using VorbisFileStream, which does not read the entire
# file immediately.
stream = pyogg.VorbisFileStream(vorbis_file_stream_filename)
# Loop through the VorbisFileStream until we've read all the data
samples_read = 0
identical = True
times = []
while True:
# Read the next part of the stream
start_time = time.time()
buf = stream.get_buffer_as_array()
end_time = time.time()
duration = (end_time - start_time) * 1000
times.append(duration)
# Check if we've reached the end of the stream
if buf is None:
def test_error_in_filename():
# Load a non-existant file
filename = "does-not-exist.ogg"
with pytest.raises(pyogg.PyOggError):
vorbis_stream = pyogg.VorbisFileStream(filename)
