Merge branch 'conformance/add-be-test-instructions-to-readme' into 'main'

  lsb_release -d | grep Ubuntu

  ```

  <span style="color: green;"> # It might be similar to Ubuntu 24.04.3 LTS </span>

It might be similar to Ubuntu 24.04.3 LTS

- Install Clang 18 compiler

  +- split_rendering/ : Folder containing all split rendering enc/dec tests

```

## Perform the MLD based analysis on the CUT outputs on reference platform (Ubuntu 24.04)

## Perform analysis on the reference platform (Ubuntu 24.04)

   If CUT test execution is done on a different platform, the scripts/CUT_OUTPUTS must be copied and provided in the reference platform's scripts/CUT_OUTPUTS. Then the following command is used to perform MLD based analysis on the same, encoded outputs will be implicitly decoded using reference decoder executables and MLD analysis performed on the reference decoded outputs.

If CUT test execution is done on a different platform, the scripts/CUT_OUTPUTS must be copied and provided in the reference platform's scripts/CUT_OUTPUTS. Then the BE analysis or non-BE analysis procedure below should be followed. It is recommended to perform first analysis with BE comparison and then analysis with non-BE comparison if non-BE outputs were found. Note, non-BE conformance applies currently only if metadata file output is BE and there are non-BE results only in wave-file output.

### Perform the BE comparison on the CUT outputs on reference platform 

The BE comparison is performed to the CUT outputs using the command below. Encoded outputs will be decoded using the reference decoder executables as part of the process. The BE comparison is then performed between the CUT and reference decoded outputs. This includes comparison of ".wav"-files, and ".csv" and ".met" metadata files. If any non-BE results are observed, this is reported on the command-line and link to an analysis ".csv" file is given. The analysis file shows which exact files were non-BE. An example passing output is shown below. If all test sets print `PASSED BE TEST`, then CUT outputs are BE-conformant.

```shell

   PYTHONPATH=scripts python scripts/ivas_conformance/runConformance.py --testvecDir $PWD/testvec --ref_build_path=testvec/bin --analyse

PYTHONPATH=scripts python scripts/ivas_conformance/runConformance.py --testvecDir $PWD/testvec --ref_build_path=testvec/bin --analyse --be-test

```

<details>

<summary>Example Output of CUT Analysis</summary>

<summary>Example Output of BE comparison</summary>

<pre><code>

Accumulating commands from Readme_IVAS_dec.txt

Accumulating commands from Readme_IVAS_rend.txt

Accumulating commands from Readme_IVAS_enc.txt

Accumulating commands from Readme_IVAS_ISAR_post_rend.txt

Accumulating commands from Readme_IVAS_rend.txt

Accumulating commands from Readme_IVAS_JBM_dec.txt

Accumulating commands from Readme_IVAS_ISAR_dec.txt

Accumulating commands from Readme_IVAS_ISAR_post_rend.txt

No of tests :

    ENC : 374

    DEC : 638

    REND : 911

    ISAR_ENC : 1032

    ISAR : 1252

Analysing tests for ENC   (374 tests)

<ENC> PASSED BE TEST

Analysing tests for DEC   (638 tests)

<DEC> PASSED BE TEST

Analysing tests for REND   (911 tests)

<REND> PASSED BE TEST

Analysing tests for ISAR_ENC   (1032 tests)

<ISAR_ENC> PASSED BE TEST

Analysing tests for ISAR   (1252 tests)

<ISAR> PASSED BE TEST

</code></pre>

</details>

### Perform the MLD based non-BE analysis on the CUT outputs on reference platform (Ubuntu 24.04)

The MLD-based non-BE analysis is performed to the CUT outputs with the command below. Encoded outputs will be decoded using the reference decoder executables as part of the process. The MLD analysis is then performed between the CUT and reference decoded outputs (only ".wav" files are compared). Comparison to MLD corridor is also done as part of this process. An example passing output is shown below. If all test sets print `MLD Corridor passed for...` and there were no non-BE metadata comparisons in BE-test, then CUT outputs are Non-BE conformant.

```shell

PYTHONPATH=scripts python scripts/ivas_conformance/runConformance.py --testvecDir $PWD/testvec --ref_build_path=testvec/bin --analyse

```

<details>

<summary>Example Output of non-BE analysis</summary>

<pre><code>

Accumulating commands from Readme_IVAS_dec.txt

Accumulating commands from Readme_IVAS_enc.txt

Accumulating commands from Readme_IVAS_rend.txt

Accumulating commands from Readme_IVAS_JBM_dec.txt

Accumulating commands from Readme_IVAS_ISAR_dec.txt

Accumulating commands from Readme_IVAS_ISAR_post_rend.txt

No of tests :

    ENC : 381

    DEC : 637

    REND : 666

    ENC : 374

    DEC : 638

    REND : 911

    ISAR_ENC : 1032

    ISAR : 1032

Analysing tests for ENC   (381 tests)

    ISAR : 1252

Analysing tests for ENC   (374 tests)

##########################################################

<ENC> Total Frames: 2635800

<ENC> Total Frames: 3074220

<ENC> MAX MLD across all frames : 0.0

<ENC> Frames with MLD == 0 : 2635800 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 1 : 2635800 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 2 : 2635800 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 5 : 2635800 frames (100.0%)

<ENC> BE frames percentage = 100.0

<ENC> Frames with MLD == 0 : 3074220 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 0.5 : 3074220 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 1 : 3074220 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 2 : 3074220 frames (100.0%)

&lt;ENC&gt; Frames with MLD <= 5 : 3074220 frames (100.0%)

<ENC> BE samples percentage = 100.0

<ENC> max absolute diff = 0.0, sample range (-32768, 32767)

##########################################################

Analysing tests for DEC   (637 tests)

MLD Corridor passed for ENC with max MLD diff of 0.0

Analysing tests for DEC   (638 tests)

##########################################################

<DEC> Total Frames: 4342140

<DEC> Total Frames: 5079252

<DEC> MAX MLD across all frames : 0.0

<DEC> Frames with MLD == 0 : 4342140 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 1 : 4342140 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 2 : 4342140 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 5 : 4342140 frames (100.0%)

<DEC> BE frames percentage = 100.0

<DEC> Frames with MLD == 0 : 5079252 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 0.5 : 5079252 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 1 : 5079252 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 2 : 5079252 frames (100.0%)

&lt;DEC&gt; Frames with MLD <= 5 : 5079252 frames (100.0%)

<DEC> BE samples percentage = 100.0

<DEC> max absolute diff = 0.0, sample range (-32768, 32767)

##########################################################

Analysing tests for REND   (666 tests)

MLD Corridor passed for DEC with max MLD diff of 0.0

Analysing tests for REND   (911 tests)

##########################################################

<REND> Total Frames: 4799952

<REND> Total Frames: 5576907

<REND> MAX MLD across all frames : 0.0

<REND> Frames with MLD == 0 : 4799952 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 1 : 4799952 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 2 : 4799952 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 5 : 4799952 frames (100.0%)

<REND> BE frames percentage = 100.0

<REND> Frames with MLD == 0 : 5576907 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 0.5 : 5576907 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 1 : 5576907 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 2 : 5576907 frames (100.0%)

&lt;REND&gt; Frames with MLD <= 5 : 5576907 frames (100.0%)

<REND> BE samples percentage = 100.0

<REND> max absolute diff = 0.0, sample range (-32768, 32767)

##########################################################

MLD Corridor passed for REND with max MLD diff of 0.0

Analysing tests for ISAR_ENC   (1032 tests)

##########################################################

<ISAR_ENC> Total Frames: 2125956

<ISAR_ENC> MAX MLD across all frames : 0.0

<ISAR_ENC> Frames with MLD == 0 : 2125956 frames (100.0%)

&lt;ISAR_ENC&gt; Frames with MLD <= 0.5 : 2125956 frames (100.0%)

&lt;ISAR_ENC&gt; Frames with MLD <= 1 : 2125956 frames (100.0%)

&lt;ISAR_ENC&gt; Frames with MLD <= 2 : 2125956 frames (100.0%)

&lt;ISAR_ENC&gt; Frames with MLD <= 5 : 2125956 frames (100.0%)

<ISAR_ENC> BE frames percentage = 100.0

<ISAR_ENC> BE samples percentage = 100.0

<ISAR_ENC> max absolute diff = 0.0, sample range (-32768, 32767)

##########################################################

Analysing tests for ISAR   (1032 tests)

MLD Corridor passed for ISAR_ENC with max MLD diff of 0.0

Analysing tests for ISAR   (1252 tests)

##########################################################

<ISAR> Total Frames: 2125956

<ISAR> Total Frames: 2590956

<ISAR> MAX MLD across all frames : 0.0

<ISAR> Frames with MLD == 0 : 2125956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 1 : 2125956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 2 : 2125956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 5 : 2125956 frames (100.0%)

<ISAR> BE frames percentage = 100.0

<ISAR> Frames with MLD == 0 : 2590956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 0.5 : 2590956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 1 : 2590956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 2 : 2590956 frames (100.0%)

&lt;ISAR&gt; Frames with MLD <= 5 : 2590956 frames (100.0%)

<ISAR> BE samples percentage = 100.0

<ISAR> max absolute diff = 0.0, sample range (-32768, 32767)

##########################################################

MLD Corridor passed for ISAR with max MLD diff of 0.0

</code></pre>

</details>

## Executing specific tests only

All CUT tests can be run specifically for IVAS Encoder,IVAS Decoder,IVAS Renderer, ISAR Encoder and ISAR Decoder only. The commandline allows for ```-test-mode=<PARAM>``` for this functionality, examples : -

All CUT tests can be run specifically for IVAS Encoder,IVAS Decoder,IVAS Renderer, ISAR Encoder and ISAR Decoder only. The commandline allows for ```-test-mode=<PARAM>``` for this functionality, examples:

- Run DUT IVAS Encoder Tests Only (on Target Platform)