COM-12461: Add MPEG-2 AAC reference decoder to fluster decoder list

Co-authored-by: Ruben Sanchez <[email protected]>

fluster/decoders/iso_mpeg2_aac.py

@@ -0,0 +1,51 @@
+# Fluster - testing framework for decoders conformance
+# Copyright (C) 2024, Fluendo, S.A.
+#  Author: Rubén Sánchez <[email protected]>, Fluendo, S.A.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation, either version 3
+# of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library. If not, see <https://www.gnu.org/licenses/>.
+
+from fluster.codec import Codec, OutputFormat
+from fluster.decoder import Decoder, register_decoder
+from fluster.utils import file_checksum, run_command
+
+
+@register_decoder
+class ISOAACDecoder(Decoder):
+    """ISO MPEG2 AAC reference decoder implementation"""
+
+    name = "ISO-MPEG2-AAC"
+    description = "ISO MPEG2 AAC reference decoder"
+    codec = Codec.AAC
+    binary = "aacdec_mc"
+
+    def decode(
+        self,
+        input_filepath: str,
+        output_filepath: str,
+        output_format: OutputFormat,
+        timeout: int,
+        verbose: bool,
+        keep_files: bool,
+    ) -> str:
+        """Decodes input_filepath in output_filepath"""
+        # pylint: disable=unused-argument
+        # Addition of .pcm as extension is a must. If it is something else, e.g. ".out" the decoder will output a
+        # ".wav", which is undesirable.
+        output_filepath += ".pcm"
+        run_command(
+            [self.binary, input_filepath, output_filepath],
+            timeout=timeout,
+            verbose=verbose,
+        )
+        return file_checksum(output_filepath)