move renderer_short/test_renderer.py -> renderer/test_renderer_short.py

========================================

THIS FOLDER WILL NOT BE PART OF DELIVERY

========================================

# External Renderer Tests

See also the [contribution page](https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/wikis/Contributions/2-external-renderer) for related presentations.

### Run tests with:

## Smoke test:

```bash

python3 -m pytest -q -n auto tests/renderer/test_renderer.py

```

## Comparison test:

```bash

python3 -m pytest -q -n auto tests/renderer/test_renderer.py --create_ref # requires IVAS_rend_ref in root!

python3 -m pytest -q -n auto tests/renderer/test_renderer.py --create_cut

```

### Important flags (see [pytest docs](https://docs.pytest.org/en/7.2.x/) for more information):

- `-k` flag can filter test cases, e.g. `-k "test_ism_binaural_static"`

- `-rA` reports ALL (pass, xpass, xfail, fail) instead of the default behaviour of reporting only failed tests\

  this option will also report captured logs, **required for obtaining the commandline of testcases that pass or xfail**

- `--last-failed` re-runs only the cases that failed in the last test run

- `--collect-only` is useful when adding new testcases to check if argument parametrization is working correctly

### Directory tree

```

.

├── compare_audio.py                    ->  Python implementation of CompAudio, used for comparisons in tests

├── conftest.py                         ->  Pytest configuration (enable commandline argument ingestion)

├── constants.py                        ->  Important paths, formats, metadata files and commandline templates

├── cut                                 ->  Default location for output files for test conditions

├── data                                ->  Input test vectors

├── ref                                 ->  Default location for output files for reference conditions

├── test_renderer.py                    ->  Runs the renderer for all modes

└── utils.py                            ->  Wrapper functions for executables for use in testcases

```

#!/usr/bin/env python3

"""

   (C) 2022-2026 IVAS codec Public Collaboration with portions copyright Dolby International AB, Ericsson AB,

   Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,

   Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,

   Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other

   contributors to this repository. All Rights Reserved.

   This software is protected by copyright law and by international treaties.

   The IVAS codec Public Collaboration consisting of Dolby International AB, Ericsson AB,

   Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,

   Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,

   Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other

   contributors to this repository retain full ownership rights in their respective contributions in

   the software. This notice grants no license of any kind, including but not limited to patent

   license, nor is any license granted by implication, estoppel or otherwise.

   Contributors are required to enter into the IVAS codec Public Collaboration agreement before making

   contributions.

   This software is provided "AS IS", without any express or implied warranties. The software is in the

   development stage. It is intended exclusively for experts who have experience with such software and

   solely for the purpose of inspection. All implied warranties of non-infringement, merchantability

   and fitness for a particular purpose are hereby disclaimed and excluded.

   Any dispute, controversy or claim arising under or in relation to providing this software shall be

   submitted to and settled by the final, binding jurisdiction of the courts of Munich, Germany in

   accordance with the laws of the Federal Republic of Germany excluding its conflict of law rules and

   the United Nations Convention on Contracts on the International Sales of Goods.

"""

#!/usr/bin/env python3

"""

   (C) 2022-2026 IVAS codec Public Collaboration with portions copyright Dolby International AB, Ericsson AB,

   Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,

   Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,

   Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other

   contributors to this repository. All Rights Reserved.

   This software is protected by copyright law and by international treaties.

   The IVAS codec Public Collaboration consisting of Dolby International AB, Ericsson AB,

   Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,

   Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,

   Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other

   contributors to this repository retain full ownership rights in their respective contributions in

   the software. This notice grants no license of any kind, including but not limited to patent

   license, nor is any license granted by implication, estoppel or otherwise.

   Contributors are required to enter into the IVAS codec Public Collaboration agreement before making

   contributions.

   This software is provided "AS IS", without any express or implied warranties. The software is in the

   development stage. It is intended exclusively for experts who have experience with such software and

   solely for the purpose of inspection. All implied warranties of non-infringement, merchantability

   and fitness for a particular purpose are hereby disclaimed and excluded.

   Any dispute, controversy or claim arising under or in relation to providing this software shall be

   submitted to and settled by the final, binding jurisdiction of the courts of Munich, Germany in

   accordance with the laws of the Federal Republic of Germany excluding its conflict of law rules and

   the United Nations Convention on Contracts on the International Sales of Goods.

"""

import sys

import warnings

from typing import Tuple

import numpy as np

from .constants import SCRIPTS_DIR

sys.path.append(str(SCRIPTS_DIR))

from pyaudio3dtools.audioarray import getdelay

def compare_audio_arrays(

    left: np.ndarray, left_fs: int, right: np.ndarray, right_fs: int

) -> Tuple[float, float]:

    if left_fs != right_fs:

        return ValueError(f"Differing samplerates: {left_fs} vs {right_fs}!")

    if left.shape[1] != right.shape[1]:

        cmp_ch = min(left.shape[1], right.shape[1])

        warnings.warn(

            f"Differing number of channels: {left.shape[1]} vs {right.shape[1]}! Comparing first {cmp_ch} channel(s)",

            category=RuntimeWarning,

        )

        left = left[:, :cmp_ch]

        right = right[:, :cmp_ch]

    if left.shape[0] != right.shape[0]:

        cmp_smp = min(left.shape[0], right.shape[0])

        warnings.warn(

            f"Warning - different durations: {left.shape[0] / left_fs:.2f}s vs {right.shape[0] / right_fs:.2f}s! Comparing first {cmp_smp / left_fs : .2f} sample(s)",

            category=RuntimeWarning,

        )

        left = left[:cmp_smp, :]

        right = right[:cmp_smp, :]

    if not np.array_equal(left, right):

        delay = getdelay(left, right)

        delay_abs = np.abs(delay)

        # getdelay can return large values if signals are quite different

        # limit any delay compensation to 20 ms

        if delay != 0 and (delay_abs < left_fs / 50):

            warnings.warn(

                f"File B is delayed by {delay} samples ({delay*1000 / left_fs : .2f}ms)!",

                category=RuntimeWarning,

            )

            # shift array

            left = np.roll(left, delay, axis=0)

            # zero shifted out samples

            if delay < 0:

                left[-np.abs(delay) :, :] = 0

            elif delay > 0:

                left[: np.abs(delay), :] = 0

        """

        http://www-mmsp.ece.mcgill.ca/Documents/Software/Packages/AFsp/AFsp/CompAudio.html

        """

        num = np.sum(left * right)

        den = np.sqrt(np.sum(left**2) * np.sum(right**2))

        if den > 0:

            r = num / den

        else:

            r = np.inf

        snr = 10 * np.log10(1 / (1 - (r**2)))

        gain_b = num / np.sum(right**2)

        max_diff = np.abs(np.max(left - right))

    else:

        snr = np.inf

        gain_b = 1

        max_diff = 0

    return snr, gain_b, max_diff