Fall back to HE/ELD-SBR when trying to encode non-stereo material in HEv2 or ELDv2.

Author: enzo1982

components/encoder/coreaudio/coreaudio.cpp

@@ -1,5 +1,5 @@
  /* BoCA - BonkEnc Component Architecture
-  * Copyright (C) 2007-2022 Robert Kausch <robert.kausch@freac.org>
+  * Copyright (C) 2007-2024 Robert Kausch <robert.kausch@freac.org>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
@@ -159,6 +159,11 @@ Bool BoCA::EncoderCoreAudio::Activate()
 	Int		 kbps	      = config->GetIntValue(ConfigureCoreAudio::ConfigID, "Bitrate", 64);
 	Bool		 mp4Container = config->GetIntValue(ConfigureCoreAudio::ConfigID, "MP4Container", True);
 
+	/* Fall back to HE/ELD-SBR if HEv2/ELDv2 is selected for non-stereo input.
+	 */
+	if (codec == CA::kAudioFormatMPEG4AAC_HE_V2	     && format.channels != 2) codec = CA::kAudioFormatMPEG4AAC_HE;
+	if (codec == CA::kOptionalAudioFormatMPEG4AAC_ELD_V2 && format.channels != 2) codec = CA::kOptionalAudioFormatMPEG4AAC_ELD_SBR;
+
 	/* Fill out source format description.
 	 */
 	CA::AudioStreamBasicDescription	 sourceFormat = { 0 };

components/encoder/coreaudio/worker.cpp

@@ -1,5 +1,5 @@
  /* BoCA - BonkEnc Component Architecture
-  * Copyright (C) 2007-2021 Robert Kausch <robert.kausch@freac.org>
+  * Copyright (C) 2007-2024 Robert Kausch <robert.kausch@freac.org>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
@@ -38,6 +38,11 @@ BoCA::SuperWorker::SuperWorker(const Config *config, const Format &iFormat) : pr
 	CA::UInt32	 codec = config->GetIntValue(ConfigureCoreAudio::ConfigID, "Codec", CA::kAudioFormatMPEG4AAC);
 	Int		 kbps  = config->GetIntValue(ConfigureCoreAudio::ConfigID, "Bitrate", 64);
 
+	/* Fall back to HE/ELD-SBR if HEv2/ELDv2 is selected for non-stereo input.
+	 */
+	if (codec == CA::kAudioFormatMPEG4AAC_HE_V2	     && format.channels != 2) codec = CA::kAudioFormatMPEG4AAC_HE;
+	if (codec == CA::kOptionalAudioFormatMPEG4AAC_ELD_V2 && format.channels != 2) codec = CA::kOptionalAudioFormatMPEG4AAC_ELD_SBR;
+
 	/* Fill out source format description.
 	 */
 	CA::AudioStreamBasicDescription	 sourceFormat = { 0 };

components/encoder/coreaudioconnect/coreaudioconnect.cpp

@@ -1,5 +1,5 @@
  /* BoCA - BonkEnc Component Architecture
-  * Copyright (C) 2007-2022 Robert Kausch <robert.kausch@freac.org>
+  * Copyright (C) 2007-2024 Robert Kausch <robert.kausch@freac.org>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
@@ -171,6 +171,11 @@ Bool BoCA::EncoderCoreAudioConnect::Activate()
 	Int	 kbps	      = config->GetIntValue(ConfigureCoreAudio::ConfigID, "Bitrate", 64);
 	Bool	 mp4Container = config->GetIntValue(ConfigureCoreAudio::ConfigID, "MP4Container", True);
 
+	/* Fall back to HE/ELD-SBR if HEv2/ELDv2 is selected for non-stereo input.
+	 */
+	if (codec == CA::kAudioFormatMPEG4AAC_HE_V2  && format.channels != 2) codec = CA::kAudioFormatMPEG4AAC_HE;
+	if (codec == CA::kAudioFormatMPEG4AAC_ELD_V2 && format.channels != 2) codec = CA::kAudioFormatMPEG4AAC_ELD_SBR;
+
 	/* Get file type of output file.
 	 */
 	fileType = mp4Container ? CA::kAudioFileM4AType : CA::kAudioFileAAC_ADTSType;

components/encoder/fdkaac/fdkaac.cpp

@@ -207,6 +207,10 @@ Bool BoCA::EncoderFDKAAC::Activate()
 	Int	 bitrate      = config->GetIntValue(ConfigureFDKAAC::ConfigID, "Bitrate", 64);
 	Int	 quality      = config->GetIntValue(ConfigureFDKAAC::ConfigID, "Quality", 4);
 
+	/* Fall back to HE if HEv2 is selected for non-stereo input.
+	 */
+	if (aacType == AOT_PS && format.channels != 2) aacType = AOT_SBR;
+
 	/* Create and configure FDK AAC encoder.
 	 */
 	HANDLE_AACENCODER	 handle = NIL;

components/encoder/fdkaac/worker.cpp

@@ -1,5 +1,5 @@
  /* BoCA - BonkEnc Component Architecture
-  * Copyright (C) 2007-2021 Robert Kausch <robert.kausch@freac.org>
+  * Copyright (C) 2007-2024 Robert Kausch <robert.kausch@freac.org>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
@@ -36,6 +36,10 @@ BoCA::SuperWorker::SuperWorker(const Config *config, const Format &iFormat) : pr
 	Int	 quality      = config->GetIntValue(ConfigureFDKAAC::ConfigID, "Quality", 4);
 	Int	 bandwidth    = config->GetIntValue(ConfigureFDKAAC::ConfigID, "Bandwidth", 0);
 
+	/* Fall back to HE if HEv2 is selected for non-stereo input.
+	 */
+	if (aacType == AOT_PS && format.channels != 2) aacType = AOT_SBR;
+
 	/* Create and configure FDK AAC encoder.
 	 */
 	ex_aacEncOpen(&handle, 0x07, format.channels);