Audio: Selector: Tune: Add blob with all up/down-mix profiles

This patch modifies the configuration blobs build script
sof_selector_blobs.m to create one blob that contains several
of them for the purpose to up or down-mix DSP offloaded decoder
output. The blob uses the reserved fields of selector configuration
to describe source and sink channel counts and channel config
values. The exported blob is "stereo_endpoint_playback_updownmix.conf".

The single configuration blobs continue to be with the reserved
fields as zeros. The .conf blobs may be removed later when other
topologies are modified to not use them.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

Author: singalsu

src/audio/selector/tune/sof_selector_blobs.m

@@ -11,46 +11,57 @@
 
 % SPDX-License-Identifier: BSD-3-Clause
 %
-% Copyright (c) 2025, Intel Corporation.
+% Copyright (c) 2025-2026, Intel Corporation.
 
 function sof_selector_blobs()
 
 	% See ITU-R BS.775-4 for mix coefficient values
 	sof_selector_paths(true);
 
 	% Matrix for 1:1 pass-through
-	sel.rsvd0 = 0;
-	sel.rsvd1 = 0;
+	sel.ch_count = [8 8]; % Number of channels
+	sel.ch_config = [12 12]; % Values of enum ipc4_channel_config: IPC4_CHANNEL_CONFIG_7_POINT_1
+	sel.ch_out = 8;
 	sel.coeffs = diag(ones(8, 1));
-	write_blob(sel, "passthrough");
+	passthrough_pack8 = write_blob(sel, "passthrough");
 
 	% Stereo to mono downmix
+	sel.ch_count = [2 1];
+	sel.ch_config = [1 0];
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(1, 1) = 0.7071;
 	sel.coeffs(1, 2) = 0.7071;
-	write_blob(sel, "downmix_stereo_to_mono");
+	stereo_to_mono_pack8 = write_blob(sel, "downmix_stereo_to_mono");
 
 	% 5.1 to stereo downmix
+	sel.ch_count = [6 2];
+	sel.ch_config = [8 1]; % IPC4_CHANNEL_CONFIG_5_POINT_1 to IPC4_CHANNEL_CONFIG_STEREO
 	fl = 1; fr = 2; fc = 3; lfe = 4; sl = 5; sr = 6;
 	m = zeros(8,8);
 	m(1, fl) = 1.0000; m(1, fr) = 0.0000; m(1, fc) = 0.7071; m(1, sl) = 0.7071; m(1, sr) = 0.0000;
 	m(2, fl) = 0.0000; m(2, fr) = 1.0000; m(2, fc) = 0.7071; m(2, sl) = 0.0000; m(2, sr) = 0.7071;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_51_to_stereo");
 	sel.coeffs(1, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to left
 	sel.coeffs(2, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to right
-	write_blob(sel, "downmix_51_to_stereo_with_lfe");
+	sixch_to_stereo_pack8 = write_blob(sel, "downmix_51_to_stereo_with_lfe");
 
 	% 5.1 to mono downmix
+	sel.ch_count = [6 1];
+	sel.ch_config = [8 0]; % IPC4_CHANNEL_CONFIG_5_POINT_1 to IPC4_CHANNEL_CONFIG_MONO
+	sel.ch_in = 6;
+	sel.ch_out = 1;
 	fl = 1; fr = 2; fc = 3; lfe = 4; sl = 5; sr = 6;
 	m = zeros(8,8);
 	m(1, fl) = 0.7071; m(1, fr) = 0.7071; m(1, fc) = 1.0000; m(1, sl) = 0.5000; m(1, sr) = 0.5000;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_51_to_mono");
 	sel.coeffs(1, lfe) = 10^(+10/20);
-	write_blob(sel, "downmix_51_to_mono_with_lfe");
+	sixch_to_mono_pack8 = write_blob(sel, "downmix_51_to_mono_with_lfe");
 
 	% 7.1 to 5.1 downmix
+	sel.ch_count = [8 6];
+	sel.ch_config = [12 8]; % IPC4_CHANNEL_CONFIG_7_POINT_1 to IPC4_CHANNEL_CONFIG_5_POINT_1
+	sel.ch_in = 8;
+	sel.ch_out = 6;
 	fl8 = 1; fr8 = 2; fc8 = 3; lfe8 = 4; bl8 = 5; br8 = 6;	sl8 = 7; sr8 = 8;
 	fl6 = 1; fr6 = 2; fc6 = 3; lfe6 = 4; sl6 = 5; sr6 = 6;
 	m = zeros(8,8);
@@ -63,50 +74,83 @@ function sof_selector_blobs()
 	m(sr6, br8) = 1;
 	m(lfe6, lfe8) = 1;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_71_to_51");
+	eightch_to_sixch_pack8 = write_blob(sel, "downmix_71_to_51");
 
-	% 7.1 to 5.1 downmix
+	% 7.1 to stereo downmix
+	sel.ch_count = [8 2];
+	sel.ch_config = [12 1]; % IPC4_CHANNEL_CONFIG_7_POINT_1 to IPC4_CHANNEL_CONFIG_STEREO
+	sel.ch_in = 8;
+	sel.ch_out = 2;
 	fl = 1; fr = 2; fc = 3; lfe = 4; bl = 5; br = 6;  sl = 7; sr = 8;
 	m = zeros(8,8);
 	m(1, fl) = 1.0000; m(1, fr) = 0.0000; m(1, fc) = 0.7071; m(1, sl) = 0.7071; m(1, sr) = 0.0000; m(1, bl) = 0.7071; m(1, br) = 0.0000;
 	m(2, fl) = 0.0000; m(2, fr) = 1.0000; m(2, fc) = 0.7071; m(2, sl) = 0.0000; m(2, sr) = 0.7071; m(2, bl) = 0.0000; m(2, br) = 0.7071;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_71_to_stereo");
 	sel.coeffs(1, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to left
 	sel.coeffs(2, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to right
-	write_blob(sel, "downmix_71_to_stereo_with_lfe");
+	eightch_to_stereo_pack8 = write_blob(sel, "downmix_71_to_stereo_with_lfe");
 
 	% 7.1 to mono downmix
+	sel.ch_count = [8 1];
+	sel.ch_config = [12 0]; % IPC4_CHANNEL_CONFIG_7_POINT_1 to IPC4_CHANNEL_CONFIG_MONO
+	sel.ch_in = 8;
+	sel.ch_out = 1;
 	fl = 1; fc = 3; fr = 2; sr = 8; br = 6; bl = 5; sl = 7; lfe = 4;
 	m = zeros(8,8);
 	m(1, fl) = 0.7071; m(1, fr) = 0.7071; m(1, fc) = 1.0000; m(1, sl) = 0.5000; m(1, sr) = 0.5000; m(1, bl) = 0.5000; m(1, br) = 0.5000;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_71_to_mono");
 	m(1, lfe) = 10^(+19/20); % +10 dB
-	write_blob(sel, "downmix_71_to_mono_with_lfe");
+	eightch_to_mono_pack8 = write_blob(sel, "downmix_71_to_mono_with_lfe");
 
 	% mono to stereo upmix
+	sel.ch_count = [1 2];
+	sel.ch_config = [0 1]; % IPC4_CHANNEL_CONFIG_MONO to IPC4_CHANNEL_CONFIG_STEREO
+	sel.ch_in = 1;
+	sel.ch_out = 2;
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(1, 1) = 10^(-3/20);
 	sel.coeffs(2, 1) = 10^(-3/20);
-	write_blob(sel, "upmix_mono_to_stereo");
+	mono_to_stereo_pack8 = write_blob(sel, "upmix_mono_to_stereo");
 
 	% mono to 5.1 / 7.1 upmix
-	fc = 3
+	sel.ch_count = [1 6];
+	sel.ch_config = [0 8]; % IPC4_CHANNEL_CONFIG_MONO to IPC4_CHANNEL_CONFIG_5_POINT_1
+	sel.ch_in = 1;
+	sel.ch_out = 6;
+	fc = 3;
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(fc, 1) = 1;
-	write_blob(sel, "upmix_mono_to_51");
-	write_blob(sel, "upmix_mono_to_71");
+	mono_to_sixch_pack8 = write_blob(sel, "upmix_mono_to_51");
+	sel.ch_count = [1 8];
+	sel.ch_config = [0 12]; % IPC4_CHANNEL_CONFIG_MONO to IPC4_CHANNEL_CONFIG_7_POINT_1
+	mono_to_eightch_pack8 = write_blob(sel, "upmix_mono_to_71");
 
 	% stereo to 5.1 / 7.1 upmix
+	sel.ch_count = [2 6];
+	sel.ch_config = [1 8]; % IPC4_CHANNEL_CONFIG_STEREO to IPC4_CHANNEL_CONFIG_5_POINT_1
+	sel.ch_in = 2;
+	sel.ch_out = 6;
 	fl = 1; fr = 2;
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(fl, 1) = 1;
 	sel.coeffs(fr, 2) = 1;
-	write_blob(sel, "upmix_stereo_to_51");
-	write_blob(sel, "upmix_stereo_to_71");
+	stereo_to_sixch_pack8 = write_blob(sel, "upmix_stereo_to_51");
+	sel.ch_count = [2 8];
+	sel.ch_config = [1 12]; % IPC4_CHANNEL_CONFIG_STEREO to IPC4_CHANNEL_CONFIG_7_POINT_1
+	sel.ch_in = 2;
+	sel.ch_out = 8;
+	stereo_to_eightch_pack8 = write_blob(sel, "upmix_stereo_to_71");
+
+	% For blob format with multiple up/down-mix profiles, intended
+	% for playback decoder offload conversions.
+	multi_pack8 = [passthrough_pack8 mono_to_stereo_pack8 sixch_to_stereo_pack8 eightch_to_stereo_pack8];
+	write_8bit_packed(multi_pack8, 'stereo_endpoint_playback_updownmix');
 
 	% Stereo to L,L,R,R
+	sel.ch_count = [2 4];
+	sel.ch_config = [13 13]; % Using IPC4_CHANNEL_CONFIG_INVALID
+	sel.ch_in = 2;
+	sel.ch_out = 4;
 	sel.coeffs = [ 1 0 0 0 0 0 0 0 ; ...
 		       1 0 0 0 0 0 0 0 ; ...
 		       0 1 0 0 0 0 0 0 ; ...
@@ -118,6 +162,10 @@ function sof_selector_blobs()
 	write_blob(sel, "xover_selector_lr_to_llrr");
 
 	% Stereo to R,R,L,L
+	sel.ch_count = [2 4];
+	sel.ch_config = [13 13];
+	sel.ch_in = 2;
+	sel.ch_out = 4;
 	sel.coeffs = [ 0 1 0 0 0 0 0 0 ; ...
 		       0 1 0 0 0 0 0 0 ; ...
 		       1 0 0 0 0 0 0 0 ; ...
@@ -129,6 +177,10 @@ function sof_selector_blobs()
 	write_blob(sel, "xover_selector_lr_to_rrll");
 
 	% Stereo to L,R,L,R
+	sel.ch_count = [2 4];
+	sel.ch_config = [13 13];
+	sel.ch_in = 2;
+	sel.ch_out = 4;
 	sel.coeffs = [ 1 0 0 0 0 0 0 0 ; ...
 		       0 1 0 0 0 0 0 0 ; ...
 		       1 0 0 0 0 0 0 0 ; ...
@@ -142,32 +194,56 @@ function sof_selector_blobs()
 	sof_selector_paths(false);
 end
 
-function write_blob(sel, blobname)
+function pack8 = write_blob(sel, blobname)
+	pack8 = pack_selector_config(sel);
+	pack8_copy = pack8;
+	pack8_copy(1:4) = uint8([0 0 0 0]);
+	write_8bit_packed(pack8_copy, blobname);
+end
+
+function write_8bit_packed(pack8, blobname)
+	blob8 = sof_selector_build_blob(pack8);
 	str_config = "selector_config";
 	str_exported = "Exported with script sof_selector_blobs.m";
-	str_howto = "cd tools/tune/selector; octave sof_selector_blobs.m"
+	str_howto = "cd tools/tune/selector; octave sof_selector_blobs.m";
 	sof_tools = '../../../../tools';
 	sof_tplg = fullfile(sof_tools, 'topology');
 	sof_tplg_selector = fullfile(sof_tplg, 'topology2/include/components/micsel');
+	tplg2_fn = sprintf("%s/%s.conf", sof_tplg_selector, blobname);
+	sof_check_create_dir(tplg2_fn);
+	sof_tplg2_write(tplg2_fn, blob8, str_config, str_exported, str_howto);
+end
 
-	sel
+function pack8 = pack_selector_config(sel)
 
-	sum_coefs = sum(sel.coeffs, 2)'
-	max_sum_coef = max(sum_coefs)
+	sum_coefs = sum(sel.coeffs, 2)';
+	max_sum_coef = max(sum_coefs);
 	if max_sum_coef > 1
 		scale = 1 / max_sum_coef;
 	else
 		scale = 1;
 	end
 
-	scale
 	sel.coeffs = scale .* sel.coeffs';
+	coeffs_vec = reshape(sel.coeffs, 1, []); % convert to row vector
+	coeffs_q10 = int16(round(coeffs_vec .* 1024)); % Q6.10
+	pack8 = uint8(2 * length(coeffs_q10) + 4);
+	rsvd1 = 0;
 
-	blob8 = sof_selector_build_blob(sel);
-	tplg2_fn = sprintf("%s/%s.conf", sof_tplg_selector, blobname);
-	sof_check_create_dir(tplg2_fn);
-	sof_tplg2_write(tplg2_fn, blob8, str_config, str_exported, str_howto);
-end
+	% header
+	j = 1;
+	pack8(j:j + 1) = uint8(sel.ch_count);
+	j = j + 2;
+	pack8(j:j + 1) = uint8(sel.ch_config);
+	j = j + 2;
+
+	% coeffs matrix
+	for i = 1:length(coeffs_q10)
+		pack8(j:j+1) = int16_to_byte(coeffs_q10(i));
+		j = j + 2;
+	end
+
+   end
 
 function sof_selector_paths(enable)
 
@@ -179,33 +255,19 @@ function sof_selector_paths(enable)
 	end
 end
 
-function blob8 = sof_selector_build_blob(sel)
+function blob8 = sof_selector_build_blob(pack8)
 
-	s = size(sel.coeffs);
 	blob_type = 0;
 	blob_param_id = 0; % IPC4_SELECTOR_COEFFS_CONFIG_ID
-	data_length = s(1) * s(2) + 2;
-	data_size = 2 * data_length; % int16_t matrix
-	coeffs_vec = reshape(sel.coeffs, 1, []); % convert to row vector
-	coeffs_q10 = int16(round(coeffs_vec .* 1024)); % Q6.10
+	data_size = length(pack8);
 	ipc_ver = 4;
 	[abi_bytes, abi_size] = sof_get_abi(data_size, ipc_ver, blob_type, blob_param_id);
 	blob_size = data_size + abi_size;
 	blob8 = uint8(zeros(1, blob_size));
 	blob8(1:abi_size) = abi_bytes;
 	j = abi_size + 1;
 
-	% header
-	blob8(j:j+1) = int16_to_byte(int16(sel.rsvd0));
-	j = j + 2;
-	blob8(j:j+1) = int16_to_byte(int16(sel.rsvd1));
-	j = j + 2;
-
-	% coeffs matrix
-	for i = 1:(s(1) * s(2))
-		blob8(j:j+1) = int16_to_byte(coeffs_q10(i));
-		j = j + 2;
-	end
+	blob8(j:j+data_size-1) = pack8;
 end
 
 function bytes = int16_to_byte(word)