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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# pylint: disable=missing-docstring
#
import sys
import unittest
import opuslib.api
import opuslib.api.decoder
import opuslib.api.ctl
__author__ = 'Никита Кузнецов <self@svartalf.info>'
__copyright__ = 'Copyright (c) 2012, SvartalF'
__license__ = 'BSD 3-Clause License'
class DecoderTest(unittest.TestCase):
"""Decoder basic API tests
From the `tests/test_opus_api.c`
"""
def test_get_size(self):
"""Invalid configurations which should fail"""
for csx in range(4):
ixx = opuslib.api.decoder.libopus_get_size(csx)
if csx in (1, 2):
self.assertFalse(1 << 16 < ixx <= 2048)
else:
self.assertEqual(ixx, 0)
def _test_unsupported_sample_rates(self):
"""
Unsupported sample rates
TODO: make the same test with a opus_decoder_init() function
"""
for csx in range(4):
for ixx in range(-7, 96000):
if ixx in (8000, 12000, 16000, 24000, 48000) and csx in (1, 2):
continue
if ixx == -5:
fsx = -8000
elif ixx == -6:
fsx = sys.maxsize # TODO: should be a INT32_MAX
elif ixx == -7:
fsx = -1 * (sys.maxsize - 1) # Emulation of the INT32_MIN
else:
fsx = ixx
try:
dec = opuslib.api.decoder.create_state(fsx, csx)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.BAD_ARG)
else:
opuslib.api.decoder.destroy(dec)
@classmethod
def test_create(cls):
try:
dec = opuslib.api.decoder.create_state(48000, 2)
except opuslib.OpusError:
raise AssertionError()
else:
opuslib.api.decoder.destroy(dec)
# TODO: rewrite this code
# VG_CHECK(dec,opus_decoder_get_size(2));
@classmethod
def test_get_final_range(cls):
dec = opuslib.api.decoder.create_state(48000, 2)
opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.get_final_range)
opuslib.api.decoder.destroy(dec)
def test_unimplemented(self):
dec = opuslib.api.decoder.create_state(48000, 2)
try:
opuslib.api.decoder.decoder_ctl(
dec, opuslib.api.ctl.unimplemented)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.UNIMPLEMENTED)
opuslib.api.decoder.destroy(dec)
def test_get_bandwidth(self):
dec = opuslib.api.decoder.create_state(48000, 2)
value = opuslib.api.decoder.decoder_ctl(
dec, opuslib.api.ctl.get_bandwidth)
self.assertEqual(value, 0)
opuslib.api.decoder.destroy(dec)
def test_get_pitch(self):
dec = opuslib.api.decoder.create_state(48000, 2)
i = opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.get_pitch)
self.assertIn(i, (-1, 0))
packet = bytes([252, 0, 0])
opuslib.api.decoder.decode(dec, packet, 3, 960, False)
i = opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.get_pitch)
self.assertIn(i, (-1, 0))
packet = bytes([1, 0, 0])
opuslib.api.decoder.decode(dec, packet, 3, 960, False)
i = opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.get_pitch)
self.assertIn(i, (-1, 0))
opuslib.api.decoder.destroy(dec)
def test_gain(self):
dec = opuslib.api.decoder.create_state(48000, 2)
i = opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.get_gain)
self.assertEqual(i, 0)
try:
opuslib.api.decoder.decoder_ctl(
dec, opuslib.api.ctl.set_gain, -32769)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.BAD_ARG)
try:
opuslib.api.decoder.decoder_ctl(
dec, opuslib.api.ctl.set_gain, 32768)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.BAD_ARG)
opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.set_gain, -15)
i = opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.get_gain)
self.assertEqual(i, -15)
opuslib.api.decoder.destroy(dec)
@classmethod
def test_reset_state(cls):
dec = opuslib.api.decoder.create_state(48000, 2)
opuslib.api.decoder.decoder_ctl(dec, opuslib.api.ctl.reset_state)
opuslib.api.decoder.destroy(dec)
def test_get_nb_samples(self):
"""opus_decoder_get_nb_samples()"""
dec = opuslib.api.decoder.create_state(48000, 2)
self.assertEqual(
480, opuslib.api.decoder.get_nb_samples(dec, bytes([0]), 1))
packet = bytes()
for xxc in ((63 << 2) | 3, 63):
packet += bytes([xxc])
# TODO: check for exception code
self.assertRaises(
opuslib.OpusError,
lambda: opuslib.api.decoder.get_nb_samples(dec, packet, 2)
)
opuslib.api.decoder.destroy(dec)
def test_packet_get_nb_frames(self):
"""opus_packet_get_nb_frames()"""
packet = bytes()
for xxc in ((63 << 2) | 3, 63):
packet += bytes([xxc])
self.assertRaises(
opuslib.OpusError,
lambda: opuslib.api.decoder.packet_get_nb_frames(packet, 0)
)
l1res = (1, 2, 2, opuslib.INVALID_PACKET)
for ixc in range(0, 256):
packet = bytes([ixc])
expected_result = l1res[ixc & 3]
try:
self.assertEqual(
expected_result,
opuslib.api.decoder.packet_get_nb_frames(packet, 1)
)
except opuslib.OpusError as exc:
if exc.code == expected_result:
continue
for jxc in range(0, 256):
packet = bytes([ixc, jxc])
self.assertEqual(
expected_result if expected_result != 3 else (packet[1] & 63), # NOQA
opuslib.api.decoder.packet_get_nb_frames(packet, 2)
)
def test_packet_get_bandwidth(self):
"""Tests `opuslib.api.decoder.opus_packet_get_bandwidth()`"""
for ixc in range(0, 256):
packet = bytes([ixc])
bwx = ixc >> 4
# Very cozy code from the test_opus_api.c
_bwx = opuslib.BANDWIDTH_NARROWBAND + (((((bwx & 7) * 9) & (63 - (bwx & 8))) + 2 + 12 * ((bwx & 8) != 0)) >> 4) # NOQA pylint: disable=line-too-long
self.assertEqual(
_bwx, opuslib.api.decoder.packet_get_bandwidth(packet)
)
def test_decode(self):
"""opus_decode()"""
packet = bytes([255, 49])
for _ in range(2, 51):
packet += bytes([0])
dec = opuslib.api.decoder.create_state(48000, 2)
try:
opuslib.api.decoder.decode(dec, packet, 51, 960, 0)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.INVALID_PACKET)
packet = bytes([252, 0, 0])
try:
opuslib.api.decoder.decode(dec, packet, -1, 960, 0)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.BAD_ARG)
try:
opuslib.api.decoder.decode(dec, packet, 3, 60, 0)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.BUFFER_TOO_SMALL)
try:
opuslib.api.decoder.decode(dec, packet, 3, 480, 0)
except opuslib.OpusError as exc:
self.assertEqual(exc.code, opuslib.BUFFER_TOO_SMALL)
try:
opuslib.api.decoder.decode(dec, packet, 3, 960, 0)
except opuslib.OpusError:
self.fail('Decode failed')
opuslib.api.decoder.destroy(dec)
def test_decode_float(self):
dec = opuslib.api.decoder.create_state(48000, 2)
packet = bytes([252, 0, 0])
try:
opuslib.api.decoder.decode_float(dec, packet, 3, 960, 0)
except opuslib.OpusError:
self.fail('Decode failed')
opuslib.api.decoder.destroy(dec)
|
