[FL-3211][FL-3212] Debug apps: speaker, uart_echo with baudrate (#2812)

* Music player: move music_worker to library
* Music player: drop cli
* Debug: speaker debug app
* Debug: baudrate arg in uart_echo app
* Libs: add music_worker to api
* Libs: add music_worker to targets linker_dependencies

Co-authored-by: あく <alleteam@gmail.com>

applications/debug/application.fam

@@ -12,5 +12,6 @@ App(
         "display_test",
         "text_box_test",
         "file_browser_test",
+        "speaker_debug",
     ],
 )

applications/debug/speaker_debug/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="speaker_debug",
+    name="Speaker Debug",
+    apptype=FlipperAppType.DEBUG,
+    entry_point="speaker_debug_app",
+    requires=["gui", "notification"],
+    stack_size=2 * 1024,
+    order=10,
+    fap_category="Debug",
+    fap_libs=["music_worker"],
+)

applications/debug/speaker_debug/speaker_debug.c

@@ -0,0 +1,120 @@
+#include <furi.h>
+#include <notification/notification.h>
+#include <music_worker/music_worker.h>
+#include <cli/cli.h>
+#include <toolbox/args.h>
+
+#define TAG "SpeakerDebug"
+#define CLI_COMMAND "speaker_debug"
+
+typedef enum {
+    SpeakerDebugAppMessageTypeStop,
+} SpeakerDebugAppMessageType;
+
+typedef struct {
+    SpeakerDebugAppMessageType type;
+} SpeakerDebugAppMessage;
+
+typedef struct {
+    MusicWorker* music_worker;
+    FuriMessageQueue* message_queue;
+    Cli* cli;
+} SpeakerDebugApp;
+
+static SpeakerDebugApp* speaker_app_alloc() {
+    SpeakerDebugApp* app = (SpeakerDebugApp*)malloc(sizeof(SpeakerDebugApp));
+    app->music_worker = music_worker_alloc();
+    app->message_queue = furi_message_queue_alloc(8, sizeof(SpeakerDebugAppMessage));
+    app->cli = furi_record_open(RECORD_CLI);
+    return app;
+}
+
+static void speaker_app_free(SpeakerDebugApp* app) {
+    music_worker_free(app->music_worker);
+    furi_message_queue_free(app->message_queue);
+    furi_record_close(RECORD_CLI);
+    free(app);
+}
+
+static void speaker_app_cli(Cli* cli, FuriString* args, void* context) {
+    UNUSED(cli);
+
+    SpeakerDebugApp* app = (SpeakerDebugApp*)context;
+    SpeakerDebugAppMessage message;
+    FuriString* cmd = furi_string_alloc();
+
+    if(!args_read_string_and_trim(args, cmd)) {
+        furi_string_free(cmd);
+        printf("Usage:\r\n");
+        printf("\t" CLI_COMMAND " stop\r\n");
+        return;
+    }
+
+    if(furi_string_cmp(cmd, "stop") == 0) {
+        message.type = SpeakerDebugAppMessageTypeStop;
+        FuriStatus status = furi_message_queue_put(app->message_queue, &message, 100);
+        if(status != FuriStatusOk) {
+            printf("Failed to send message\r\n");
+        } else {
+            printf("Stopping\r\n");
+        }
+    } else {
+        printf("Usage:\r\n");
+        printf("\t" CLI_COMMAND " stop\r\n");
+    }
+
+    furi_string_free(cmd);
+}
+
+static bool speaker_app_music_play(SpeakerDebugApp* app, const char* rtttl) {
+    if(music_worker_is_playing(app->music_worker)) {
+        music_worker_stop(app->music_worker);
+    }
+
+    if(!music_worker_load_rtttl_from_string(app->music_worker, rtttl)) {
+        FURI_LOG_E(TAG, "Failed to load RTTTL");
+        return false;
+    }
+
+    music_worker_set_volume(app->music_worker, 1.0f);
+    music_worker_start(app->music_worker);
+
+    return true;
+}
+
+static void speaker_app_music_stop(SpeakerDebugApp* app) {
+    if(music_worker_is_playing(app->music_worker)) {
+        music_worker_stop(app->music_worker);
+    }
+}
+
+static void speaker_app_run(SpeakerDebugApp* app, const char* arg) {
+    if(!arg || !speaker_app_music_play(app, arg)) {
+        FURI_LOG_E(TAG, "Provided RTTTL is invalid");
+        return;
+    }
+
+    cli_add_command(app->cli, CLI_COMMAND, CliCommandFlagParallelSafe, speaker_app_cli, app);
+
+    SpeakerDebugAppMessage message;
+    FuriStatus status;
+    while(true) {
+        status = furi_message_queue_get(app->message_queue, &message, FuriWaitForever);
+
+        if(status == FuriStatusOk) {
+            if(message.type == SpeakerDebugAppMessageTypeStop) {
+                speaker_app_music_stop(app);
+                break;
+            }
+        }
+    }
+
+    cli_delete_command(app->cli, CLI_COMMAND);
+}
+
+int32_t speaker_debug_app(void* arg) {
+    SpeakerDebugApp* app = speaker_app_alloc();
+    speaker_app_run(app, arg);
+    speaker_app_free(app);
+    return 0;
+}

applications/debug/uart_echo/uart_echo.c

@@ -10,6 +10,8 @@
 
 #define LINES_ON_SCREEN 6
 #define COLUMNS_ON_SCREEN 21
+#define TAG "UartEcho"
+#define DEFAULT_BAUD_RATE 230400
 
 typedef struct UartDumpModel UartDumpModel;
 
@@ -179,7 +181,7 @@ static int32_t uart_echo_worker(void* context) {
     return 0;
 }
 
-static UartEchoApp* uart_echo_app_alloc() {
+static UartEchoApp* uart_echo_app_alloc(uint32_t baudrate) {
     UartEchoApp* app = malloc(sizeof(UartEchoApp));
 
     app->rx_stream = furi_stream_buffer_alloc(2048, 1);
@@ -220,7 +222,7 @@ static UartEchoApp* uart_echo_app_alloc() {
 
     // Enable uart listener
     furi_hal_console_disable();
-    furi_hal_uart_set_br(FuriHalUartIdUSART1, 115200);
+    furi_hal_uart_set_br(FuriHalUartIdUSART1, baudrate);
     furi_hal_uart_set_irq_cb(FuriHalUartIdUSART1, uart_echo_on_irq_cb, app);
 
     return app;
@@ -263,8 +265,18 @@ static void uart_echo_app_free(UartEchoApp* app) {
 }
 
 int32_t uart_echo_app(void* p) {
-    UNUSED(p);
-    UartEchoApp* app = uart_echo_app_alloc();
+    uint32_t baudrate = DEFAULT_BAUD_RATE;
+    if(p) {
+        const char* baudrate_str = p;
+        if(sscanf(baudrate_str, "%lu", &baudrate) != 1) {
+            FURI_LOG_E(TAG, "Invalid baudrate: %s", baudrate_str);
+            baudrate = DEFAULT_BAUD_RATE;
+        }
+    }
+
+    FURI_LOG_I(TAG, "Using baudrate: %lu", baudrate);
+
+    UartEchoApp* app = uart_echo_app_alloc(baudrate);
     view_dispatcher_run(app->view_dispatcher);
     uart_echo_app_free(app);
     return 0;

applications/external/music_player/application.fam

@@ -7,18 +7,10 @@ App(
         "gui",
         "dialogs",
     ],
-    provides=["music_player_start"],
     stack_size=2 * 1024,
     order=20,
     fap_icon="icons/music_10px.png",
     fap_category="Media",
     fap_icon_assets="icons",
-)
-
-App(
-    appid="music_player_start",
-    apptype=FlipperAppType.STARTUP,
-    entry_point="music_player_on_system_start",
-    requires=["music_player"],
-    order=30,
+    fap_libs=["music_worker"],
 )

applications/external/music_player/music_player.c

@@ -1,4 +1,4 @@
-#include "music_player_worker.h"
+#include <music_worker/music_worker.h>
 
 #include <furi.h>
 #include <furi_hal.h>
@@ -34,7 +34,7 @@ typedef struct {
     ViewPort* view_port;
     Gui* gui;
 
-    MusicPlayerWorker* worker;
+    MusicWorker* worker;
 } MusicPlayer;
 
 static const float MUSIC_PLAYER_VOLUMES[] = {0, .25, .5, .75, 1};
@@ -218,7 +218,7 @@ static void input_callback(InputEvent* input_event, void* ctx) {
     }
 }
 
-static void music_player_worker_callback(
+static void music_worker_callback(
     uint8_t semitone,
     uint8_t dots,
     uint8_t duration,
@@ -250,7 +250,7 @@ static void music_player_worker_callback(
 void music_player_clear(MusicPlayer* instance) {
     memset(instance->model->duration_history, 0xff, MUSIC_PLAYER_SEMITONE_HISTORY_SIZE);
     memset(instance->model->semitone_history, 0xff, MUSIC_PLAYER_SEMITONE_HISTORY_SIZE);
-    music_player_worker_clear(instance->worker);
+    music_worker_clear(instance->worker);
 }
 
 MusicPlayer* music_player_alloc() {
@@ -263,10 +263,9 @@ MusicPlayer* music_player_alloc() {
 
     instance->input_queue = furi_message_queue_alloc(8, sizeof(InputEvent));
 
-    instance->worker = music_player_worker_alloc();
-    music_player_worker_set_volume(
-        instance->worker, MUSIC_PLAYER_VOLUMES[instance->model->volume]);
-    music_player_worker_set_callback(instance->worker, music_player_worker_callback, instance);
+    instance->worker = music_worker_alloc();
+    music_worker_set_volume(instance->worker, MUSIC_PLAYER_VOLUMES[instance->model->volume]);
+    music_worker_set_callback(instance->worker, music_worker_callback, instance);
 
     music_player_clear(instance);
 
@@ -286,7 +285,7 @@ void music_player_free(MusicPlayer* instance) {
     furi_record_close(RECORD_GUI);
     view_port_free(instance->view_port);
 
-    music_player_worker_free(instance->worker);
+    music_worker_free(instance->worker);
 
     furi_message_queue_free(instance->input_queue);
 
@@ -330,12 +329,12 @@ int32_t music_player_app(void* p) {
             }
         }
 
-        if(!music_player_worker_load(music_player->worker, furi_string_get_cstr(file_path))) {
+        if(!music_worker_load(music_player->worker, furi_string_get_cstr(file_path))) {
             FURI_LOG_E(TAG, "Unable to load file");
             break;
         }
 
-        music_player_worker_start(music_player->worker);
+        music_worker_start(music_player->worker);
 
         InputEvent input;
         while(furi_message_queue_get(music_player->input_queue, &input, FuriWaitForever) ==
@@ -349,11 +348,11 @@ int32_t music_player_app(void* p) {
             } else if(input.key == InputKeyUp) {
                 if(music_player->model->volume < COUNT_OF(MUSIC_PLAYER_VOLUMES) - 1)
                     music_player->model->volume++;
-                music_player_worker_set_volume(
+                music_worker_set_volume(
                     music_player->worker, MUSIC_PLAYER_VOLUMES[music_player->model->volume]);
             } else if(input.key == InputKeyDown) {
                 if(music_player->model->volume > 0) music_player->model->volume--;
-                music_player_worker_set_volume(
+                music_worker_set_volume(
                     music_player->worker, MUSIC_PLAYER_VOLUMES[music_player->model->volume]);
             }
 
@@ -361,7 +360,7 @@ int32_t music_player_app(void* p) {
             view_port_update(music_player->view_port);
         }
 
-        music_player_worker_stop(music_player->worker);
+        music_worker_stop(music_player->worker);
         if(p && strlen(p)) break; // Exit instead of going to browser if launched with arg
         music_player_clear(music_player);
     } while(1);

applications/external/music_player/music_player_cli.c

@@ -1,48 +0,0 @@
-#include <furi.h>
-#include <cli/cli.h>
-#include <storage/storage.h>
-#include "music_player_worker.h"
-
-static void music_player_cli(Cli* cli, FuriString* args, void* context) {
-    UNUSED(context);
-    MusicPlayerWorker* music_player_worker = music_player_worker_alloc();
-    Storage* storage = furi_record_open(RECORD_STORAGE);
-
-    do {
-        if(storage_common_stat(storage, furi_string_get_cstr(args), NULL) == FSE_OK) {
-            if(!music_player_worker_load(music_player_worker, furi_string_get_cstr(args))) {
-                printf("Failed to open file %s\r\n", furi_string_get_cstr(args));
-                break;
-            }
-        } else {
-            if(!music_player_worker_load_rtttl_from_string(
-                   music_player_worker, furi_string_get_cstr(args))) {
-                printf("Argument is not a file or RTTTL\r\n");
-                break;
-            }
-        }
-
-        printf("Press CTRL+C to stop\r\n");
-        music_player_worker_set_volume(music_player_worker, 1.0f);
-        music_player_worker_start(music_player_worker);
-        while(!cli_cmd_interrupt_received(cli)) {
-            furi_delay_ms(50);
-        }
-        music_player_worker_stop(music_player_worker);
-    } while(0);
-
-    furi_record_close(RECORD_STORAGE);
-    music_player_worker_free(music_player_worker);
-}
-
-void music_player_on_system_start() {
-#ifdef SRV_CLI
-    Cli* cli = furi_record_open(RECORD_CLI);
-
-    cli_add_command(cli, "music_player", CliCommandFlagDefault, music_player_cli, NULL);
-
-    furi_record_close(RECORD_CLI);
-#else
-    UNUSED(music_player_cli);
-#endif
-}

applications/external/music_player/music_player_worker.h

@@ -1,38 +0,0 @@
-#pragma once
-
-#include <stdbool.h>
-#include <stdint.h>
-
-typedef void (*MusicPlayerWorkerCallback)(
-    uint8_t semitone,
-    uint8_t dots,
-    uint8_t duration,
-    float position,
-    void* context);
-
-typedef struct MusicPlayerWorker MusicPlayerWorker;
-
-MusicPlayerWorker* music_player_worker_alloc();
-
-void music_player_worker_clear(MusicPlayerWorker* instance);
-
-void music_player_worker_free(MusicPlayerWorker* instance);
-
-bool music_player_worker_load(MusicPlayerWorker* instance, const char* file_path);
-
-bool music_player_worker_load_fmf_from_file(MusicPlayerWorker* instance, const char* file_path);
-
-bool music_player_worker_load_rtttl_from_file(MusicPlayerWorker* instance, const char* file_path);
-
-bool music_player_worker_load_rtttl_from_string(MusicPlayerWorker* instance, const char* string);
-
-void music_player_worker_set_callback(
-    MusicPlayerWorker* instance,
-    MusicPlayerWorkerCallback callback,
-    void* context);
-
-void music_player_worker_set_volume(MusicPlayerWorker* instance, float volume);
-
-void music_player_worker_start(MusicPlayerWorker* instance);
-
-void music_player_worker_stop(MusicPlayerWorker* instance);

firmware/targets/f18/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,31.2,,
+Version,+,31.3,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -128,6 +128,7 @@ Header,+,lib/mlib/m-list.h,,
 Header,+,lib/mlib/m-rbtree.h,,
 Header,+,lib/mlib/m-tuple.h,,
 Header,+,lib/mlib/m-variant.h,,
+Header,+,lib/music_worker/music_worker.h,,
 Header,+,lib/one_wire/maxim_crc.h,,
 Header,+,lib/one_wire/one_wire_host.h,,
 Header,+,lib/one_wire/one_wire_slave.h,,
@@ -1519,6 +1520,18 @@ Function,-,mkstemps,int,"char*, int"
 Function,-,mktemp,char*,char*
 Function,-,mktime,time_t,tm*
 Function,-,mrand48,long,
+Function,-,music_worker_alloc,MusicWorker*,
+Function,-,music_worker_clear,void,MusicWorker*
+Function,-,music_worker_free,void,MusicWorker*
+Function,-,music_worker_is_playing,_Bool,MusicWorker*
+Function,-,music_worker_load,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_load_fmf_from_file,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_load_rtttl_from_file,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_load_rtttl_from_string,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_set_callback,void,"MusicWorker*, MusicWorkerCallback, void*"
+Function,-,music_worker_set_volume,void,"MusicWorker*, float"
+Function,-,music_worker_start,void,MusicWorker*
+Function,-,music_worker_stop,void,MusicWorker*
 Function,+,notification_internal_message,void,"NotificationApp*, const NotificationSequence*"
 Function,+,notification_internal_message_block,void,"NotificationApp*, const NotificationSequence*"
 Function,+,notification_message,void,"NotificationApp*, const NotificationSequence*"

firmware/targets/f18/target.json

@@ -25,6 +25,7 @@
         "appframe",
         "assets",
         "one_wire",
+        "music_worker",
         "misc",
         "flipper_application",
         "flipperformat",

firmware/targets/f7/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,31.2,,
+Version,+,31.3,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -146,6 +146,7 @@ Header,+,lib/mlib/m-list.h,,
 Header,+,lib/mlib/m-rbtree.h,,
 Header,+,lib/mlib/m-tuple.h,,
 Header,+,lib/mlib/m-variant.h,,
+Header,+,lib/music_worker/music_worker.h,,
 Header,+,lib/nfc/nfc_device.h,,
 Header,+,lib/nfc/protocols/nfc_util.h,,
 Header,+,lib/one_wire/maxim_crc.h,,
@@ -1220,12 +1221,12 @@ Function,+,furi_hal_mpu_protect_disable,void,FuriHalMpuRegion
 Function,+,furi_hal_mpu_protect_no_access,void,"FuriHalMpuRegion, uint32_t, FuriHalMPURegionSize"
 Function,+,furi_hal_mpu_protect_read_only,void,"FuriHalMpuRegion, uint32_t, FuriHalMPURegionSize"
 Function,+,furi_hal_nfc_activate_nfca,_Bool,"uint32_t, uint32_t*"
-Function,+,furi_hal_nfc_field_is_present,_Bool,
-Function,+,furi_hal_nfc_field_detect_start,void,
 Function,-,furi_hal_nfc_deinit,void,
 Function,+,furi_hal_nfc_detect,_Bool,"FuriHalNfcDevData*, uint32_t"
 Function,+,furi_hal_nfc_emulate_nfca,_Bool,"uint8_t*, uint8_t, uint8_t*, uint8_t, FuriHalNfcEmulateCallback, void*, uint32_t"
 Function,+,furi_hal_nfc_exit_sleep,void,
+Function,+,furi_hal_nfc_field_detect_start,void,
+Function,+,furi_hal_nfc_field_is_present,_Bool,
 Function,+,furi_hal_nfc_field_off,void,
 Function,+,furi_hal_nfc_field_on,void,
 Function,-,furi_hal_nfc_init,void,
@@ -1307,9 +1308,9 @@ Function,-,furi_hal_resources_init_early,void,
 Function,+,furi_hal_rfid_comp_set_callback,void,"FuriHalRfidCompCallback, void*"
 Function,+,furi_hal_rfid_comp_start,void,
 Function,+,furi_hal_rfid_comp_stop,void,
-Function,+,furi_hal_rfid_field_is_present,_Bool,uint32_t*
 Function,+,furi_hal_rfid_field_detect_start,void,
 Function,+,furi_hal_rfid_field_detect_stop,void,
+Function,+,furi_hal_rfid_field_is_present,_Bool,uint32_t*
 Function,-,furi_hal_rfid_init,void,
 Function,+,furi_hal_rfid_pin_pull_pulldown,void,
 Function,+,furi_hal_rfid_pin_pull_release,void,
@@ -2063,6 +2064,18 @@ Function,-,modf,double,"double, double*"
 Function,-,modff,float,"float, float*"
 Function,-,modfl,long double,"long double, long double*"
 Function,-,mrand48,long,
+Function,-,music_worker_alloc,MusicWorker*,
+Function,-,music_worker_clear,void,MusicWorker*
+Function,-,music_worker_free,void,MusicWorker*
+Function,-,music_worker_is_playing,_Bool,MusicWorker*
+Function,-,music_worker_load,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_load_fmf_from_file,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_load_rtttl_from_file,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_load_rtttl_from_string,_Bool,"MusicWorker*, const char*"
+Function,-,music_worker_set_callback,void,"MusicWorker*, MusicWorkerCallback, void*"
+Function,-,music_worker_set_volume,void,"MusicWorker*, float"
+Function,-,music_worker_start,void,MusicWorker*
+Function,-,music_worker_stop,void,MusicWorker*
 Function,-,nan,double,const char*
 Function,-,nanf,float,const char*
 Function,-,nanl,long double,const char*

firmware/targets/f7/target.json

@@ -38,6 +38,7 @@
         "assets",
         "one_wire",
         "ibutton",
+        "music_worker",
         "misc",
         "mbedtls",
         "lfrfid",

lib/SConscript

@@ -15,6 +15,7 @@ env.Append(
         Dir("u8g2"),
         Dir("update_util"),
         Dir("print"),
+        Dir("music_worker"),
     ],
 )
 
@@ -100,6 +101,7 @@ libs = env.BuildModules(
         "misc",
         "lfrfid",
         "flipper_application",
+        "music_worker",
     ],
 )
 

lib/music_worker/SConscript

@@ -0,0 +1,27 @@
+Import("env")
+
+env.Append(
+    CPPPATH=[
+        "#/lib/music_worker",
+    ],
+    SDK_HEADERS=[
+        File("music_worker.h"),
+    ],
+)
+
+libenv = env.Clone(FW_LIB_NAME="music_worker")
+libenv.ApplyLibFlags()
+
+libenv.AppendUnique(
+    CCFLAGS=[
+        # Required for lib to be linkable with .faps
+        "-mword-relocations",
+        "-mlong-calls",
+    ],
+)
+
+sources = libenv.GlobRecursive("*.c*")
+
+lib = libenv.StaticLibrary("${FW_LIB_NAME}", sources)
+libenv.Install("${LIB_DIST_DIR}", lib)
+Return("lib")

lib/music_worker/music_worker.c

@@ -1,4 +1,4 @@
-#include "music_player_worker.h"
+#include "music_worker.h"
 
 #include <furi_hal.h>
 #include <furi.h>
@@ -9,7 +9,7 @@
 #include <math.h>
 #include <m-array.h>
 
-#define TAG "MusicPlayerWorker"
+#define TAG "MusicWorker"
 
 #define MUSIC_PLAYER_FILETYPE "Flipper Music Format"
 #define MUSIC_PLAYER_VERSION 0
@@ -28,11 +28,11 @@ typedef struct {
 
 ARRAY_DEF(NoteBlockArray, NoteBlock, M_POD_OPLIST);
 
-struct MusicPlayerWorker {
+struct MusicWorker {
     FuriThread* thread;
     bool should_work;
 
-    MusicPlayerWorkerCallback callback;
+    MusicWorkerCallback callback;
     void* callback_context;
 
     float volume;
@@ -42,9 +42,9 @@ struct MusicPlayerWorker {
     NoteBlockArray_t notes;
 };
 
-static int32_t music_player_worker_thread_callback(void* context) {
+static int32_t music_worker_thread_callback(void* context) {
     furi_assert(context);
-    MusicPlayerWorker* instance = context;
+    MusicWorker* instance = context;
 
     NoteBlockArray_it_t it;
     NoteBlockArray_it(it, instance->notes);
@@ -97,24 +97,24 @@ static int32_t music_player_worker_thread_callback(void* context) {
     return 0;
 }
 
-MusicPlayerWorker* music_player_worker_alloc() {
-    MusicPlayerWorker* instance = malloc(sizeof(MusicPlayerWorker));
+MusicWorker* music_worker_alloc() {
+    MusicWorker* instance = malloc(sizeof(MusicWorker));
 
     NoteBlockArray_init(instance->notes);
 
-    instance->thread = furi_thread_alloc_ex(
-        "MusicPlayerWorker", 1024, music_player_worker_thread_callback, instance);
+    instance->thread =
+        furi_thread_alloc_ex("MusicWorker", 1024, music_worker_thread_callback, instance);
 
     instance->volume = 1.0f;
 
     return instance;
 }
 
-void music_player_worker_clear(MusicPlayerWorker* instance) {
+void music_worker_clear(MusicWorker* instance) {
     NoteBlockArray_reset(instance->notes);
 }
 
-void music_player_worker_free(MusicPlayerWorker* instance) {
+void music_worker_free(MusicWorker* instance) {
     furi_assert(instance);
     furi_thread_free(instance->thread);
     NoteBlockArray_clear(instance->notes);
@@ -186,11 +186,8 @@ static size_t skip_till(const char* string, const char symbol) {
     return ret;
 }
 
-static bool music_player_worker_add_note(
-    MusicPlayerWorker* instance,
-    uint8_t semitone,
-    uint8_t duration,
-    uint8_t dots) {
+static bool
+    music_worker_add_note(MusicWorker* instance, uint8_t semitone, uint8_t duration, uint8_t dots) {
     NoteBlock note_block;
 
     note_block.semitone = semitone;
@@ -228,7 +225,7 @@ static int8_t note_to_semitone(const char note) {
     }
 }
 
-static bool music_player_worker_parse_notes(MusicPlayerWorker* instance, const char* string) {
+static bool music_worker_parse_notes(MusicWorker* instance, const char* string) {
     const char* cursor = string;
     bool result = true;
 
@@ -286,7 +283,7 @@ static bool music_player_worker_parse_notes(MusicPlayerWorker* instance, const c
                 semitone += sharp_char == '#' ? 1 : 0;
             }
 
-            if(music_player_worker_add_note(instance, semitone, duration, dots)) {
+            if(music_worker_add_note(instance, semitone, duration, dots)) {
                 FURI_LOG_D(
                     TAG,
                     "Added note: %c%c%lu.%lu = %u %lu",
@@ -316,20 +313,20 @@ static bool music_player_worker_parse_notes(MusicPlayerWorker* instance, const c
     return result;
 }
 
-bool music_player_worker_load(MusicPlayerWorker* instance, const char* file_path) {
+bool music_worker_load(MusicWorker* instance, const char* file_path) {
     furi_assert(instance);
     furi_assert(file_path);
 
     bool ret = false;
     if(strcasestr(file_path, ".fmf")) {
-        ret = music_player_worker_load_fmf_from_file(instance, file_path);
+        ret = music_worker_load_fmf_from_file(instance, file_path);
     } else {
-        ret = music_player_worker_load_rtttl_from_file(instance, file_path);
+        ret = music_worker_load_rtttl_from_file(instance, file_path);
     }
     return ret;
 }
 
-bool music_player_worker_load_fmf_from_file(MusicPlayerWorker* instance, const char* file_path) {
+bool music_worker_load_fmf_from_file(MusicWorker* instance, const char* file_path) {
     furi_assert(instance);
     furi_assert(file_path);
 
@@ -369,7 +366,7 @@ bool music_player_worker_load_fmf_from_file(MusicPlayerWorker* instance, const c
             break;
         }
 
-        if(!music_player_worker_parse_notes(instance, furi_string_get_cstr(temp_str))) {
+        if(!music_worker_parse_notes(instance, furi_string_get_cstr(temp_str))) {
             break;
         }
 
@@ -383,7 +380,7 @@ bool music_player_worker_load_fmf_from_file(MusicPlayerWorker* instance, const c
     return result;
 }
 
-bool music_player_worker_load_rtttl_from_file(MusicPlayerWorker* instance, const char* file_path) {
+bool music_worker_load_rtttl_from_file(MusicWorker* instance, const char* file_path) {
     furi_assert(instance);
     furi_assert(file_path);
 
@@ -414,7 +411,7 @@ bool music_player_worker_load_rtttl_from_file(MusicPlayerWorker* instance, const
             break;
         }
 
-        if(!music_player_worker_load_rtttl_from_string(instance, furi_string_get_cstr(content))) {
+        if(!music_worker_load_rtttl_from_string(instance, furi_string_get_cstr(content))) {
             FURI_LOG_E(TAG, "Invalid file content");
             break;
         }
@@ -429,7 +426,7 @@ bool music_player_worker_load_rtttl_from_file(MusicPlayerWorker* instance, const
     return result;
 }
 
-bool music_player_worker_load_rtttl_from_string(MusicPlayerWorker* instance, const char* string) {
+bool music_worker_load_rtttl_from_string(MusicWorker* instance, const char* string) {
     furi_assert(instance);
 
     const char* cursor = string;
@@ -470,28 +467,25 @@ bool music_player_worker_load_rtttl_from_string(MusicPlayerWorker* instance, con
         return false;
     }
     cursor++;
-    if(!music_player_worker_parse_notes(instance, cursor)) {
+    if(!music_worker_parse_notes(instance, cursor)) {
         return false;
     }
 
     return true;
 }
 
-void music_player_worker_set_callback(
-    MusicPlayerWorker* instance,
-    MusicPlayerWorkerCallback callback,
-    void* context) {
+void music_worker_set_callback(MusicWorker* instance, MusicWorkerCallback callback, void* context) {
     furi_assert(instance);
     instance->callback = callback;
     instance->callback_context = context;
 }
 
-void music_player_worker_set_volume(MusicPlayerWorker* instance, float volume) {
+void music_worker_set_volume(MusicWorker* instance, float volume) {
     furi_assert(instance);
     instance->volume = volume;
 }
 
-void music_player_worker_start(MusicPlayerWorker* instance) {
+void music_worker_start(MusicWorker* instance) {
     furi_assert(instance);
     furi_assert(instance->should_work == false);
 
@@ -499,10 +493,15 @@ void music_player_worker_start(MusicPlayerWorker* instance) {
     furi_thread_start(instance->thread);
 }
 
-void music_player_worker_stop(MusicPlayerWorker* instance) {
+void music_worker_stop(MusicWorker* instance) {
     furi_assert(instance);
     furi_assert(instance->should_work == true);
 
     instance->should_work = false;
     furi_thread_join(instance->thread);
 }
+
+bool music_worker_is_playing(MusicWorker* instance) {
+    furi_assert(instance);
+    return instance->should_work;
+}

lib/music_worker/music_worker.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef void (*MusicWorkerCallback)(
+    uint8_t semitone,
+    uint8_t dots,
+    uint8_t duration,
+    float position,
+    void* context);
+
+typedef struct MusicWorker MusicWorker;
+
+MusicWorker* music_worker_alloc();
+
+void music_worker_clear(MusicWorker* instance);
+
+void music_worker_free(MusicWorker* instance);
+
+bool music_worker_load(MusicWorker* instance, const char* file_path);
+
+bool music_worker_load_fmf_from_file(MusicWorker* instance, const char* file_path);
+
+bool music_worker_load_rtttl_from_file(MusicWorker* instance, const char* file_path);
+
+bool music_worker_load_rtttl_from_string(MusicWorker* instance, const char* string);
+
+void music_worker_set_callback(MusicWorker* instance, MusicWorkerCallback callback, void* context);
+
+void music_worker_set_volume(MusicWorker* instance, float volume);
+
+void music_worker_start(MusicWorker* instance);
+
+void music_worker_stop(MusicWorker* instance);
+
+bool music_worker_is_playing(MusicWorker* instance);