test-compressed-audio: add test

Add test that plays mp3 audio using cplay, and check PC states with
Socwatch

Signed-off-by: Emilia Kurdybelska <emiliax.kurdybelska@intel.com>

Author: ekurdybx

case-lib/lib.sh

@@ -1604,11 +1604,15 @@ analyze_mixed_sound()
     fi
 }
 
-# Generates 20s .mp3 file for testing
-# Arguments: 1 - output filename
+# Generates s 2-channels .mp3 file for testing
+# Arguments:
+# 1 - output filename
+# 2 - duration of the soundfile in seconds
+# 3 - number of channels
 generate_mp3_file()
 {
-    ffmpeg -f lavfi -i "sine=frequency=1000:duration=20" "$1"
+    mkdir -p "$HOME/Music"
+    ffmpeg -f lavfi -i "sine=frequency=1000:duration=$2" -ac "$3" "$1"
 }
 
 # Load socwatch and check if module was loaded correctly

test-case/test-compressed-audio.sh

@@ -0,0 +1,95 @@
+#!/bin/bash
+
+##
+## Case Name: test-compressed-audio
+##
+## Preconditions:
+##    TODO
+##
+## Description:
+##    TODO
+##
+## Case step:
+##    TODO
+##
+## Expect result:
+##    TODO
+##
+
+# shellcheck source=case-lib/lib.sh
+source "$(dirname "${BASH_SOURCE[0]}")"/../case-lib/lib.sh
+
+OPT_NAME['p']='pcm_p'     	    OPT_DESC['p']='compression device for playback. Example: 50'
+OPT_HAS_ARG['p']=1          	OPT_VAL['p']=''
+
+OPT_NAME['N']='channels_p'       OPT_DESC['N']='channel number for playback.'
+OPT_HAS_ARG['N']=1              OPT_VAL['N']='2'
+
+OPT_NAME['s']='sof-logger'      OPT_DESC['s']="Open sof-logger trace the data will store at $LOG_ROOT"
+OPT_HAS_ARG['s']=0              OPT_VAL['s']=1
+
+OPT_NAME['d']='duration'        OPT_DESC['d']='duration time for playing the test sound'
+OPT_HAS_ARG['d']=1              OPT_VAL['d']=10
+
+: "${SOCWATCH_PATH:=$HOME/socwatch}"
+SOCWATCH_VERSION=$(sudo "$SOCWATCH_PATH"/socwatch --version | grep Version)
+
+func_opt_parse_option "$@"
+setup_kernel_check_point
+
+pcm_p=${OPT_VAL['p']}
+channels_p=${OPT_VAL['N']}
+duration=${OPT_VAL['d']}
+
+analyze_socwatch_results()
+{
+    pc_states_file="$LOG_ROOT/pc_states.csv"
+    touch "$pc_states_file"
+    results=$(cat "$socwatch_output".csv | grep "Platform Monitoring Technology CPU Package C-States Residency Summary: Residency" -A 10)
+    echo "$results" | tee "$pc_states_file"
+
+    expected_results='{"PC0":12.00, "PC2":88, "PC6.1":0, "PC6.2":11, "PC10.1":2, "PC10.2":72, "PC10.3":0}'
+
+    # Analyze if the % of the time spent in given PC state was as expected
+    if python3 "$SCRIPT_HOME"/tools/analyze-pc-states.py "$pc_states_file" "$expected_results"; then
+        dlogi "All Package Residency (%) values were as expected"
+    else
+        die "Some Package Residency (%) values different from expected!"
+    fi
+}
+
+# Checks for soundfile needed for test, generates missing ones
+prepare_test_soundfile()
+{
+    if [ ! -f "$audio_filename" ]; then
+        dlogi "Generating audio file for the test..."
+        generate_mp3_file "$audio_filename" "$duration" "$channels_p"
+    fi
+}
+
+run_test()
+{
+    audio_filename="$HOME/Music/$channels_p-ch-$duration-s.mp3"
+    prepare_test_soundfile
+
+    socwatch_output="$LOG_ROOT/socwatch-results/socwatch_report"
+
+    # cplay -c 0 -d "$pcm_p" -I MP3 "$audio_filename" -v
+
+    play_command=("cplay" "-c" "0" "-d" "$pcm_p" "-I" "MP3" "${audio_filename}" "-v")
+    run_with_socwatch "$socwatch_output" "${play_command[@]}"
+    
+    analyze_socwatch_results
+}
+
+main()
+{
+    export RUN_SOCWATCH=true
+    start_test
+    logger_disabled || func_lib_start_log_collect
+    run_test
+}
+
+{
+    main "$@"; exit "$?"
+}