Able to edit settings in interface

LICENSE

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+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -0,0 +1,273 @@
+<a name="readme-top"></a>
+
+<div align="center">
+
+# hathoris
+
+Simple, open-source, web interface & API for controlling your HiFi amplifier on Linux.
+
+</div>
+
+<div align="center"><h4><a href="#about-the-project">About the Project</a> • <a href="#goals-and-features">Goals and Features</a>  • <a href="#setup">Setup</a> • <a href="#configuration-and-usage">Configuration and Usage</a> • <a href="#compatible-hardware">Compatible Hardware</a> • <a href="#stack-tech">Stack Tech</a> • <a href="#license-and-contributions">License and Contributions</a></h4></div>
+
+<p align="center"><img src="./assets/mainscreen.png" alt="Main screen"/></p>
+
+## About the Project
+
+Hathoris is a web interface and API for controlling an audio amplifier on Linux. It allows selecting audio sources, whether virtual (web radio, streaming, local or remote sources) or physical (S/PDIF, analog line-in, etc., depending on the hardware). It also provides advanced control over exposed sound card parameters, such as overall volume, stereo balance, and on some hardware, settings like treble, bass, and surround.
+
+
+## Goals and Features
+
+Hathoris aims to provide a simple and accessible solution for controlling a HiFi amplifier over the network. The key features include:
+
+- **Easy sharing of HiFi equipment:** Allow multiple users in a household to control an amplifier over WiFi.
+
+- **Seamless integration:** Restore the simplicity of old HiFi systems while modernizing control.
+
+- **Support for multiple audio sources:** Handle both physical and virtual sources (S/PDIF input, ).
+
+- **Sound card/amplifier controls:** Use your browser or the API to remotely change the volume or any other parameters exposed by the sound card.
+
+- **Integration with multiple application:** Display the current track and/or control the underlying application (like [AirPlay](https://github.com/mikebrady/shairport-sync), [MPRIS2](https://mpris2.readthedocs.io/en/latest/) (Firefox, ...), [mpv](https://github.com/mpv-player/mpv), ...).
+
+- **Per input volume control:** Thanks to `pulseaudio`, every sink-inputs can be mixed at a given volume.
+
+
+## Setup
+
+### Prerequisites
+
+Hathoris is compatible with any Linux distribution that has PulseAudio. It also requires:
+
+- `alsa-utils` is required to control sound card parameters, and to handle some physical sources.
+- `mpv` and `yt-dlp` for managing virtual sources.
+- A compatible amplifier or sound card (see the [Compatible Hardware](#compatible-hardware) section).
+
+
+### Quick Installation Guide
+
+TODO: Add a quick installation guide.
+
+
+### Build the Project
+
+To build the project:
+
+
+1. Clone the repository:
+
+```
+git clone https://github.com/nemunaire/hathoris.git
+cd hathoris
+```
+
+2. Build the frontend:
+
+```
+cd ui
+npm install
+npm run build
+cd ..
+```
+
+3. Then, build the API (which embed the frontend):
+
+```
+go build
+```
+
+
+## Configuration and Usage
+
+### Audio Sources
+
+- **Physical sources** are automatically detected when implemented in the code.
+- **Application sources** like [shairport-sync](https://github.com/mikebrady/shairport-sync), a [pulseaudio/PipeWire tunnel](https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-tunnel-sinksource), [Firefox/Chrome/VLC/... and others MPRIS2 compatible softwares](https://mpris2.readthedocs.io/en/latest/)....
+- **Virtual sources** are configured via a JSON file. (A web configuration interface is planned.)
+
+Here is an JSON with 2 virtual sources:
+
+```json
+{
+  "custom_sources": [
+    {
+      "src": "mpv",
+      "kv": {
+        "file": "http://stream.syntheticfm.com:8040/stream",
+        "name": "Radio Synthetic FM"
+      }
+    },
+    {
+      "src": "mpv",
+      "kv": {
+        "file": "https://youtube.com/channel/UCD-4g5w1h8xQpLaNS_ghU4g",
+        "name": "NewRetroWave",
+        "opts": [
+          "--shuffle"
+        ]
+      }
+    }
+  ]
+}
+```
+
+### API
+
+The web interface talks directly to the REST API, so everything that can be perform in the browser can also be performed with the API.
+
+The API is not yet documented, but a Swagger specification is planned soon.
+
+
+#### Source Selection
+
+Here is a basic API call to start listening what's received on the S/PDIF port of the amplifier:
+
+```
+curl -X POST http://127.0.0.1:8080/api/sources/spdif/enable
+```
+
+Select a virtual source, as defined earlier:
+
+```
+curl -X POST http://127.0.0.1:8080/api/sources/mpv-0/enable
+```
+
+When enabling one source, any other active source is disabled beforehand.
+
+
+#### Volume Control
+
+You can control the sound card volume (and any other parameter it exposes):
+
+```
+curl -X POST -d '[108]' http://127.0.0.1:8080/api/mixer/1/values
+```
+
+`1` corresponds to the ALSA `NumID`, given by `/api/mixer`:
+
+```
+curl http://127.0.0.1:8080/api/mixer'
+[
+  {
+    "NumID": 1,
+    "Name": "Digital Playback Volume",
+    "Type": "INTEGER",
+    "RW": true,
+    "Min": 0,
+    "Max": 207,
+    "DBScale": {
+      "Min": -103.5,
+      "Step": 0.5,
+      "Mute": 1
+    },
+    "values": [
+      144,
+      144
+    ]
+  },
+  {
+    "NumID": 2,
+    "Name": "Analogue Playback Volume",
+    "Type": "INTEGER",
+    "RW": true,
+    "Min": 0,
+    "Max": 1,
+    "DBScale": {
+      "Min": -6,
+      "Step": 6
+    },
+    "values": [
+      1,
+      1
+    ]
+  },
+  {
+    "NumID": 3,
+    "Name": "Analogue Playback Boost Volume",
+    "Type": "INTEGER",
+    "RW": true,
+    "Min": 0,
+    "Max": 1,
+    "DBScale": {
+      "Min": 0,
+      "Step": 0.8
+    },
+    "values": [
+      1,
+      1
+    ]
+  },
+  {
+    "NumID": 4,
+    "Name": "Digital Playback Switch",
+    "Type": "BOOLEAN",
+    "RW": true,
+    "Min": 0,
+    "Max": 0,
+    "values": [
+      true,
+      true
+    ]
+  },
+  {
+    "NumID": 5,
+    "Name": "Deemphasis Switch",
+    "Type": "BOOLEAN",
+    "RW": true,
+    "Min": 0,
+    "Max": 0,
+    "values": [
+      true
+    ]
+  },
+  {
+    "NumID": 6,
+    "Name": "DSP Program",
+    "Type": "ENUMERATED",
+    "RW": true,
+    "Min": 0,
+    "Max": 0,
+    "values": [
+      0
+    ],
+    "items": [
+      "FIR interpolation with de-emphasis",
+      "Low latency IIR with de-emphasis",
+      "High attenuation with de-emphasis",
+      "Fixed process flow",
+      "Ringing-less low latency FIR"
+    ]
+  }
+]
+```
+
+
+## Compatible Hardware
+
+Hathoris has been tested on several hardware configurations, including:
+
+- [Voltastream AMP1](https://polyvection.com/news/flashback-how-voltastream-paved-our-way/)
+- [Voltastream Zero](https://polyvection.com/news/flashback-how-voltastream-paved-our-way/)
+- [Raspberry Pi with DigiAMP+](https://www.raspberrypi.com/products/digiamp-plus/)
+
+Additional compatible hardware may be added in the future (don't hesitate to contribute).
+
+
+## Stack Tech
+
+- [![Go][Go-badge]][Go-url] - A statically typed, concurrent, and garbage collected language
+
+[Go-badge]: https://img.shields.io/badge/Go-00ADD8?style=for-the-badge&logo=go
+[Go-url]: https://go.dev/
+- [![Svelte][Svelte-badge]][Svelte-url] - A high-performance reactive JavaScript UI library
+
+[Svelte-badge]: https://img.shields.io/badge/Svelte-FF3E00?style=for-the-badge&logo=svelte
+[Svelte-url]: https://svelte.dev/
+
+
+## License and Contributions
+
+This project is licensed under the [GNU Affero General Public License 3.0](https://www.gnu.org/licenses/agpl-3.0.html).
+
+Contributions are welcome! The goal is to keep the project simple, efficient, and compatible with as much Linux hardware as possible.

alsacontrol/cardcontrol.go

@@ -0,0 +1,215 @@
+package alsa
+
+import (
+	"bufio"
+	"fmt"
+	"os/exec"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+type CardControl struct {
+	NumID     int64
+	Interface string
+	Name      string
+	Type      string
+	Access    string
+	NValues   int64
+	Min       int64
+	Max       int64
+	Step      int64
+	DBScale   CardControldBScale
+	Values    []string
+	Items     []string
+}
+
+func (cc *CardControl) parseAmixerField(key, value string) (err error) {
+	switch key {
+	case "numid":
+		cc.NumID, err = strconv.ParseInt(value, 10, 64)
+	case "iface":
+		cc.Interface = value
+	case "name":
+		cc.Name = strings.TrimPrefix(strings.TrimSuffix(value, "'"), "'")
+	case "type":
+		cc.Type = value
+	case "access":
+		cc.Access = value
+	case "values":
+		cc.NValues, err = strconv.ParseInt(value, 10, 64)
+	case "min":
+		cc.Min, err = strconv.ParseInt(value, 10, 64)
+	case "max":
+		cc.Max, err = strconv.ParseInt(value, 10, 64)
+	case "step":
+		cc.Step, err = strconv.ParseInt(value, 10, 64)
+	}
+
+	return
+}
+
+func (cc *CardControl) ToCardControlState() *CardControlState {
+	ccs := &CardControlState{
+		NumID: cc.NumID,
+		Type:  cc.Type,
+		Name:  cc.Name,
+		RW:    strings.HasPrefix(cc.Access, "rw"),
+		Items: cc.Items,
+	}
+
+	if cc.DBScale.Min != 0 || cc.DBScale.Step != 0 {
+		ccs.DBScale = &cc.DBScale
+	}
+
+	// Convert values
+	for _, v := range cc.Values {
+		if cc.Type == "INTEGER" || cc.Type == "ENUMERATED" {
+			if tmp, err := strconv.ParseFloat(v, 10); err == nil {
+				ccs.Current = append(ccs.Current, tmp)
+			}
+		} else if cc.Type == "BOOLEAN" {
+			if v == "on" {
+				ccs.Current = append(ccs.Current, true)
+			} else {
+				ccs.Current = append(ccs.Current, false)
+			}
+		}
+	}
+
+	ccs.Min = cc.Min
+	ccs.Max = cc.Max
+
+	return ccs
+}
+
+type CardControldBScale struct {
+	Min  float64
+	Step float64
+	Mute int64 `json:",omitempty"`
+}
+
+func (cc *CardControldBScale) parseAmixerField(key, value string) (err error) {
+	switch key {
+	case "min":
+		cc.Min, err = strconv.ParseFloat(strings.TrimSuffix(value, "dB"), 10)
+	case "step":
+		cc.Step, err = strconv.ParseFloat(strings.TrimSuffix(value, "dB"), 10)
+	case "mute":
+		cc.Mute, err = strconv.ParseInt(value, 10, 64)
+	}
+
+	return
+}
+
+type CardControlState struct {
+	NumID   int64
+	Name    string
+	Type    string
+	RW      bool `json:"RW,omitempty"`
+	Min     int64
+	Max     int64
+	DBScale *CardControldBScale `json:",omitempty"`
+	Current []interface{}       `json:"values,omitempty"`
+	Items   []string            `json:"items,omitempty"`
+}
+
+func ParseAmixerContent(cardId string) ([]*CardControl, error) {
+	cardIdType := "-D"
+	if _, err := strconv.Atoi(cardId); err == nil {
+		cardIdType = "-c"
+	}
+
+	cmd := exec.Command("amixer", cardIdType, cardId, "-M", "contents")
+
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		return nil, err
+	}
+	if err := cmd.Start(); err != nil {
+		return nil, err
+	}
+
+	var ret []*CardControl
+
+	fscanner := bufio.NewScanner(stdout)
+	for fscanner.Scan() {
+		line := fscanner.Text()
+
+		if strings.HasPrefix(line, "  ; Item #") {
+			cc := ret[len(ret)-1]
+			cc.Items = append(cc.Items, strings.TrimSuffix(line[strings.Index(line, "'")+1:], "'"))
+		} else if strings.HasPrefix(line, "  :") {
+			cc := ret[len(ret)-1]
+			line = strings.TrimPrefix(line, "  : ")
+
+			kv := strings.SplitN(line, "=", 2)
+			if kv[0] == "values" {
+				cc.Values = strings.Split(kv[1], ",")
+			}
+		} else if strings.HasPrefix(line, "  |") || strings.HasPrefix(line, "    |") {
+			cc := ret[len(ret)-1]
+			line = strings.TrimSpace(line)
+			if strings.HasPrefix(line, "| dBscale-") {
+				line = strings.TrimPrefix(line, "| dBscale-")
+
+				fields := strings.Split(line, ",")
+
+				var scale CardControldBScale
+				for _, field := range fields {
+					kv := strings.SplitN(field, "=", 2)
+					scale.parseAmixerField(kv[0], kv[1])
+				}
+				cc.DBScale = scale
+			}
+		} else {
+			var cc *CardControl
+
+			if strings.HasPrefix(line, "numid=") {
+				cc = &CardControl{}
+				ret = append(ret, cc)
+			} else {
+				cc = ret[len(ret)-1]
+				line = strings.TrimPrefix(line, "  ; ")
+			}
+
+			fields := strings.Split(line, ",")
+
+			for _, field := range fields {
+				kv := strings.SplitN(field, "=", 2)
+				cc.parseAmixerField(kv[0], kv[1])
+			}
+		}
+	}
+
+	err = cmd.Wait()
+
+	// Sort mixers by NumID
+	sort.Sort(ByNumID(ret))
+
+	return ret, err
+}
+
+func (cc *CardControl) CsetAmixer(cardId string, values ...string) error {
+	opts := []string{
+		"-c",
+		cardId,
+		"-M",
+		"cset",
+		fmt.Sprintf("numid=%d", cc.NumID),
+	}
+	opts = append(opts, strings.Join(values, ","))
+	cmd := exec.Command("amixer", opts...)
+
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+
+	return cmd.Wait()
+}
+
+type ByNumID []*CardControl
+
+func (a ByNumID) Len() int           { return len(a) }
+func (a ByNumID) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ByNumID) Less(i, j int) bool { return a[i].NumID < a[j].NumID }

api/routes.go

@@ -4,12 +4,18 @@ import (
 	"github.com/gin-gonic/gin"
 
 	"git.nemunai.re/nemunaire/hathoris/config"
+	"git.nemunai.re/nemunaire/hathoris/settings"
 )
 
-func DeclareRoutes(router *gin.Engine, cfg *config.Config) {
+type SettingsGetter func() *settings.Settings
+
+type SettingsReloader func() error
+
+func DeclareRoutes(router *gin.Engine, cfg *config.Config, getsettings SettingsGetter, reloadsettings SettingsReloader) {
 	apiRoutes := router.Group("/api")
 
 	declareInputsRoutes(cfg, apiRoutes)
+	declareSettingsRoutes(cfg, getsettings, reloadsettings, apiRoutes)
 	declareSourcesRoutes(cfg, apiRoutes)
 	declareVolumeRoutes(cfg, apiRoutes)
 }

api/settings.go

@@ -0,0 +1,64 @@
+package api
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"git.nemunai.re/nemunaire/hathoris/config"
+	"git.nemunai.re/nemunaire/hathoris/settings"
+	"git.nemunai.re/nemunaire/hathoris/sources"
+)
+
+type loadableSourceExposed struct {
+	Description string                 `json:"description"`
+	Fields      []*sources.SourceField `json:"fields"`
+}
+
+func declareSettingsRoutes(cfg *config.Config, getsettings SettingsGetter, reloadsettings SettingsReloader, router *gin.RouterGroup) {
+	router.GET("/settings", func(c *gin.Context) {
+		c.JSON(http.StatusOK, getsettings())
+	})
+
+	router.POST("/settings", func(c *gin.Context) {
+		var params settings.Settings
+
+		// Parse settings
+		err := c.ShouldBindJSON(&params)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"errmsg": fmt.Sprintf("Something is wrong in received settings: %s", err.Error())})
+			return
+		}
+
+		// Reload current settings
+		*getsettings() = params
+
+		// Save settings
+		getsettings().Save(cfg.SettingsPath)
+
+		err = reloadsettings()
+		if err != nil {
+			log.Println("Unable to reload settings:", err.Error())
+			c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": fmt.Sprintf("Unable to reload settings: %s", err.Error())})
+			return
+		}
+
+		c.JSON(http.StatusOK, getsettings())
+	})
+
+	router.GET("/settings/loadable_sources", func(c *gin.Context) {
+		ret := map[string]loadableSourceExposed{}
+
+		for k, ls := range sources.LoadableSources {
+			ret[k] = loadableSourceExposed{
+				Description: ls.Description,
+				Fields:      sources.GenFields(ls.SourceDefinition),
+			}
+		}
+
+		c.JSON(http.StatusOK, ret)
+	})
+
+}

api/volume.go

@@ -1,16 +1,14 @@
 package api
 
 import (
-	"bufio"
 	"flag"
 	"fmt"
 	"net/http"
-	"os/exec"
 	"strconv"
-	"strings"
 
 	"github.com/gin-gonic/gin"
 
+	"git.nemunai.re/nemunaire/hathoris/alsacontrol"
 	"git.nemunai.re/nemunaire/hathoris/config"
 )
 
@@ -22,13 +20,13 @@ func init() {
 
 func declareVolumeRoutes(cfg *config.Config, router *gin.RouterGroup) {
 	router.GET("/mixer", func(c *gin.Context) {
-		cnt, err := parseAmixerContent()
+		cnt, err := alsa.ParseAmixerContent(cardId)
 		if err != nil {
 			c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": err.Error()})
 			return
 		}
 
-		var ret []*CardControlState
+		var ret []*alsa.CardControlState
 
 		for _, cc := range cnt {
 			ret = append(ret, cc.ToCardControlState())
@@ -41,12 +39,12 @@ func declareVolumeRoutes(cfg *config.Config, router *gin.RouterGroup) {
 	mixerRoutes.Use(MixerHandler)
 
 	mixerRoutes.GET("", func(c *gin.Context) {
-		cc := c.MustGet("mixer").(*CardControl)
+		cc := c.MustGet("mixer").(*alsa.CardControl)
 
 		c.JSON(http.StatusOK, cc.ToCardControlState())
 	})
 	mixerRoutes.POST("/values", func(c *gin.Context) {
-		cc := c.MustGet("mixer").(*CardControl)
+		cc := c.MustGet("mixer").(*alsa.CardControl)
 
 		var valuesINT []interface{}
 
@@ -73,7 +71,7 @@ func declareVolumeRoutes(cfg *config.Config, router *gin.RouterGroup) {
 			}
 		}
 
-		err = cc.CsetAmixer(values...)
+		err = cc.CsetAmixer(cardId, values...)
 		if err != nil {
 			c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": fmt.Sprintf("Unable to set values: %s", err.Error())})
 			return
@@ -84,7 +82,7 @@ func declareVolumeRoutes(cfg *config.Config, router *gin.RouterGroup) {
 }
 
 func MixerHandler(c *gin.Context) {
-	mixers, err := parseAmixerContent()
+	mixers, err := alsa.ParseAmixerContent(cardId)
 	if err != nil {
 		c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": err.Error()})
 		return
@@ -102,193 +100,3 @@ func MixerHandler(c *gin.Context) {
 
 	c.AbortWithStatusJSON(http.StatusNotFound, gin.H{"errmsg": "Mixer not found"})
 }
-
-type CardControl struct {
-	NumID     int64
-	Interface string
-	Name      string
-	Type      string
-	Access    string
-	NValues   int64
-	Min       int64
-	Max       int64
-	Step      int64
-	DBScale   CardControldBScale
-	Values    []string
-	Items     []string
-}
-
-func (cc *CardControl) parseAmixerField(key, value string) (err error) {
-	switch key {
-	case "numid":
-		cc.NumID, err = strconv.ParseInt(value, 10, 64)
-	case "iface":
-		cc.Interface = value
-	case "name":
-		cc.Name = strings.TrimPrefix(strings.TrimSuffix(value, "'"), "'")
-	case "type":
-		cc.Type = value
-	case "access":
-		cc.Access = value
-	case "values":
-		cc.NValues, err = strconv.ParseInt(value, 10, 64)
-	case "min":
-		cc.Min, err = strconv.ParseInt(value, 10, 64)
-	case "max":
-		cc.Max, err = strconv.ParseInt(value, 10, 64)
-	case "step":
-		cc.Step, err = strconv.ParseInt(value, 10, 64)
-	}
-
-	return
-}
-
-func (cc *CardControl) ToCardControlState() *CardControlState {
-	ccs := &CardControlState{
-		NumID: cc.NumID,
-		Type:  cc.Type,
-		Name:  cc.Name,
-		RW:    strings.HasPrefix(cc.Access, "rw"),
-		Items: cc.Items,
-	}
-
-	if cc.DBScale.Min != 0 || cc.DBScale.Step != 0 {
-		ccs.DBScale = &cc.DBScale
-	}
-
-	// Convert values
-	for _, v := range cc.Values {
-		if cc.Type == "INTEGER" || cc.Type == "ENUMERATED" {
-			if tmp, err := strconv.ParseFloat(v, 10); err == nil {
-				ccs.Current = append(ccs.Current, tmp)
-			}
-		} else if cc.Type == "BOOLEAN" {
-			if v == "on" {
-				ccs.Current = append(ccs.Current, true)
-			} else {
-				ccs.Current = append(ccs.Current, false)
-			}
-		}
-	}
-
-	ccs.Min = cc.Min
-	ccs.Max = cc.Max
-
-	return ccs
-}
-
-type CardControldBScale struct {
-	Min  float64
-	Step float64
-	Mute int64 `json:",omitempty"`
-}
-
-func (cc *CardControldBScale) parseAmixerField(key, value string) (err error) {
-	switch key {
-	case "min":
-		cc.Min, err = strconv.ParseFloat(strings.TrimSuffix(value, "dB"), 10)
-	case "step":
-		cc.Step, err = strconv.ParseFloat(strings.TrimSuffix(value, "dB"), 10)
-	case "mute":
-		cc.Mute, err = strconv.ParseInt(value, 10, 64)
-	}
-
-	return
-}
-
-type CardControlState struct {
-	NumID   int64
-	Name    string
-	Type    string
-	RW      bool `json:"RW,omitempty"`
-	Min     int64
-	Max     int64
-	DBScale *CardControldBScale `json:",omitempty"`
-	Current []interface{}       `json:"values,omitempty"`
-	Items   []string            `json:"items,omitempty"`
-}
-
-func parseAmixerContent() ([]*CardControl, error) {
-	cmd := exec.Command("amixer", "-c", cardId, "-M", "contents")
-
-	stdout, err := cmd.StdoutPipe()
-	if err != nil {
-		return nil, err
-	}
-	if err := cmd.Start(); err != nil {
-		return nil, err
-	}
-
-	var ret []*CardControl
-
-	fscanner := bufio.NewScanner(stdout)
-	for fscanner.Scan() {
-		line := fscanner.Text()
-
-		if strings.HasPrefix(line, "  ; Item #") {
-			cc := ret[len(ret)-1]
-			cc.Items = append(cc.Items, strings.TrimSuffix(line[strings.Index(line, "'")+1:], "'"))
-		} else if strings.HasPrefix(line, "  :") {
-			cc := ret[len(ret)-1]
-			line = strings.TrimPrefix(line, "  : ")
-
-			kv := strings.SplitN(line, "=", 2)
-			if kv[0] == "values" {
-				cc.Values = strings.Split(kv[1], ",")
-			}
-		} else if strings.HasPrefix(line, "  |") || strings.HasPrefix(line, "    |") {
-			cc := ret[len(ret)-1]
-			line = strings.TrimSpace(line)
-			if strings.HasPrefix(line, "| dBscale-") {
-				line = strings.TrimPrefix(line, "| dBscale-")
-
-				fields := strings.Split(line, ",")
-
-				var scale CardControldBScale
-				for _, field := range fields {
-					kv := strings.SplitN(field, "=", 2)
-					scale.parseAmixerField(kv[0], kv[1])
-				}
-				cc.DBScale = scale
-			}
-		} else {
-			var cc *CardControl
-
-			if strings.HasPrefix(line, "numid=") {
-				cc = &CardControl{}
-				ret = append(ret, cc)
-			} else {
-				cc = ret[len(ret)-1]
-				line = strings.TrimPrefix(line, "  ; ")
-			}
-
-			fields := strings.Split(line, ",")
-
-			for _, field := range fields {
-				kv := strings.SplitN(field, "=", 2)
-				cc.parseAmixerField(kv[0], kv[1])
-			}
-		}
-	}
-
-	err = cmd.Wait()
-	return ret, err
-}
-
-func (cc *CardControl) CsetAmixer(values ...string) error {
-	opts := []string{
-		"-c",
-		cardId,
-		"-M",
-		"cset",
-		fmt.Sprintf("numid=%d", cc.NumID),
-	}
-	opts = append(opts, strings.Join(values, ","))
-	cmd := exec.Command("amixer", opts...)
-
-	if err := cmd.Start(); err != nil {
-		return err
-	}
-
-	return cmd.Wait()
-}

app.go

@@ -49,7 +49,9 @@ func NewApp(cfg *config.Config) *App {
 
 	// Register routes
 	ui.DeclareRoutes(router, cfg)
-	api.DeclareRoutes(router, cfg)
+	api.DeclareRoutes(router, cfg, func() *settings.Settings {
+		return app.settings
+	}, app.loadCustomSources)
 
 	router.GET("/api/version", func(c *gin.Context) {
 		c.JSON(http.StatusOK, gin.H{"version": Version})
@@ -82,6 +84,21 @@ func (app *App) loadCustomSources() error {
 		}
 	}
 
+	// Delete old custom sources, no more in config
+	for id1 := range sources.SoundSources {
+		found := false
+		for id2, csrc := range app.settings.CustomSources {
+			if id1 == fmt.Sprintf("%s-%d", csrc.Source, id2) {
+				found = true
+				break
+			}
+		}
+
+		if !found {
+			delete(sources.SoundSources, id1)
+		}
+	}
+
 	return nil
 }
 

sources/fields.go

@@ -0,0 +1,53 @@
+package sources
+
+import (
+	"reflect"
+	"strings"
+)
+
+type SourceField struct {
+	Id          string      `json:"id"`
+	Type        string      `json:"type"`
+	Label       string      `json:"label,omitempty"`
+	Placeholder string      `json:"placeholder,omitempty"`
+	Default     interface{} `json:"default,omitempty"`
+	Required    bool        `json:"required,omitempty"`
+	Description string      `json:"description,omitempty"`
+}
+
+func GenFields(data interface{}) (fields []*SourceField) {
+	if data != nil {
+		dataMeta := reflect.Indirect(reflect.ValueOf(data)).Type()
+
+		for i := 0; i < dataMeta.NumField(); i += 1 {
+			field := dataMeta.Field(i)
+			if field.IsExported() {
+				fields = append(fields, GenField(field))
+			}
+		}
+	}
+	return
+}
+
+func GenField(field reflect.StructField) (f *SourceField) {
+	f = &SourceField{
+		Id:          field.Name,
+		Type:        field.Type.String(),
+		Label:       field.Tag.Get("label"),
+		Placeholder: field.Tag.Get("placeholder"),
+		Default:     field.Tag.Get("default"),
+		Description: field.Tag.Get("description"),
+	}
+
+	jsonTag := field.Tag.Get("json")
+	jsonTuples := strings.Split(jsonTag, ",")
+	if len(jsonTuples) > 0 && len(jsonTuples[0]) > 0 {
+		f.Id = jsonTuples[0]
+	}
+
+	if f.Label == "" {
+		f.Label = field.Name
+	}
+
+	return
+}

sources/spdif/source.go

@@ -3,16 +3,21 @@ package spdif
 import (
 	"fmt"
 	"io"
+	"log"
 	"os"
 	"os/exec"
 	"path"
+	"strconv"
+	"time"
 
+	"git.nemunai.re/nemunaire/hathoris/alsacontrol"
 	"git.nemunai.re/nemunaire/hathoris/sources"
 )
 
 type SPDIFSource struct {
 	processRec  *exec.Cmd
 	processPlay *exec.Cmd
+	endChan     chan bool
 	DeviceIn    string
 	DeviceOut   string
 	Bitrate     int64
@@ -28,12 +33,16 @@ func init() {
 				idfile := path.Join(thisdir, "id")
 				if fd, err := os.Open(idfile); err == nil {
 					if cnt, err := io.ReadAll(fd); err == nil && string(cnt) == "imxspdif\n" {
-						sources.SoundSources["imxspdif"] = &SPDIFSource{
-							DeviceIn:  "imxspdif",
-							DeviceOut: "is31ap2121",
-							Bitrate:   48000,
-							Channels:  2,
-							Format:    "S24_LE",
+						sr, err := getCardSampleRate("imxspdif")
+						if err == nil {
+							sources.SoundSources["imxspdif"] = &SPDIFSource{
+								endChan:   make(chan bool, 1),
+								DeviceIn:  "imxspdif",
+								DeviceOut: "is31ap2121",
+								Bitrate:   sr,
+								Channels:  2,
+								Format:    "S24_LE",
+							}
 						}
 					}
 					fd.Close()
@@ -44,6 +53,9 @@ func init() {
 }
 
 func (s *SPDIFSource) GetName() string {
+	if s.IsActive() {
+		return fmt.Sprintf("S/PDIF %.1f kHz", float32(s.Bitrate)/1000)
+	}
 	return "S/PDIF"
 }
 
@@ -63,6 +75,22 @@ func (s *SPDIFSource) Enable() error {
 		s.processPlay.Process.Kill()
 	}
 
+	// Update bitrate
+	sr, err := getCardSampleRate(s.DeviceIn)
+	if err != nil {
+		return err
+	}
+	// If no bitrate, asume soundcard is sleeping, try to wake up with a random bitrate
+	if sr == 0 {
+		sr = 44100
+	}
+	s.Bitrate = sr
+
+	// If no bitrate, asume soundcard is sleeping, try to wake up with a random bitrate
+	if sr == 0 {
+		sr = 44100
+	}
+
 	pipeR, pipeW, err := os.Pipe()
 	if err != nil {
 		return err
@@ -86,13 +114,15 @@ func (s *SPDIFSource) Enable() error {
 		s.processPlay = nil
 	}()
 
-	s.processRec = exec.Command("arecord", "-t", "wav", "-f", s.Format, fmt.Sprintf("-r%d", s.Bitrate), fmt.Sprintf("-c%d", s.Channels), "-D", "hw:"+s.DeviceIn, "-B0", "--buffer-size=512")
+	s.processRec = exec.Command("arecord", "-t", "wav", "-f", s.Format, fmt.Sprintf("-r%d", s.Bitrate), fmt.Sprintf("-c%d", s.Channels), "-D", "hw:"+s.DeviceIn, "-F0", "--period-size=512", "-B0", "--buffer-size=512")
 	s.processRec.Stdout = pipeW
 	if err := s.processRec.Start(); err != nil {
 		s.processPlay.Process.Kill()
 		return err
 	}
 
+	go s.watchBitrate()
+
 	go func() {
 		err := s.processRec.Wait()
 		if err != nil {
@@ -100,6 +130,7 @@ func (s *SPDIFSource) Enable() error {
 		}
 		pipeW.Close()
 
+		s.endChan <- true
 		s.processRec = nil
 	}()
 
@@ -116,3 +147,75 @@ func (s *SPDIFSource) Disable() error {
 
 	return nil
 }
+
+func getCardSampleRate(cardId string) (sr int64, err error) {
+	cc, err := alsa.ParseAmixerContent("hw:" + cardId)
+	if err != nil {
+		return 0, fmt.Errorf("unable to parse amixer content: %w", err)
+	}
+
+	for _, c := range cc {
+		if len(c.Values) == 1 {
+			val, err := strconv.Atoi(c.Values[0])
+			if c.Name == "RX Sample Rate" && err == nil {
+				return int64(val), nil
+			}
+		}
+	}
+
+	return 0, fmt.Errorf("unable to find 'RX Sample Rate' control value")
+}
+
+func (s *SPDIFSource) watchBitrate() {
+	ticker := time.NewTicker(time.Second)
+
+	nbAt0 := 0
+loop:
+	for {
+		select {
+		case <-ticker.C:
+			sr, err := getCardSampleRate(s.DeviceIn)
+			if err == nil {
+				if sr == 0 {
+					nbAt0 += 1
+					if nbAt0 >= 30 {
+						log.Printf("[SPDIF] Sample rate is at %d Hz for %d seconds, disabling", sr, nbAt0)
+						s.Disable()
+
+						// Wait process exited
+						for {
+							if s.processPlay == nil && s.processRec == nil {
+								break
+							}
+							time.Sleep(100 * time.Millisecond)
+						}
+					} else if nbAt0 == 1 || nbAt0%5 == 0 {
+						log.Printf("[SPDIF] Sample rate is at %d Hz for %d seconds", sr, nbAt0)
+					}
+				} else {
+					nbAt0 = 0
+					if s.Bitrate/10 != sr/10 {
+						log.Printf("[SPDIF] Sample rate changes from %d to %d Hz", s.Bitrate, sr)
+						s.Bitrate = sr
+
+						s.Disable()
+
+						// Wait process exited
+						for {
+							if s.processPlay == nil && s.processRec == nil {
+								break
+							}
+							time.Sleep(100 * time.Millisecond)
+						}
+
+						s.Enable()
+					}
+				}
+			}
+		case <-s.endChan:
+			break loop
+		}
+	}
+
+	ticker.Stop()
+}

ui/routes.go

@@ -64,6 +64,7 @@ func DeclareRoutes(router *gin.Engine, cfg *config.Config) {
 	}
 
 	router.GET("/", serveOrReverse("", cfg))
+	router.GET("/settings", serveOrReverse("", cfg))
 
 	router.GET("/_app/*_", serveOrReverse("", cfg))
 	router.GET("/img/*_", serveOrReverse("", cfg))

ui/src/lib/components/Inputs.svelte

@@ -20,12 +20,12 @@
     {#if (showInactives && $inputsList.length === 0) || (!showInactives && $activeInputs.length === 0)}
         <li class="list-group-item py-3">
             <span class="text-muted">
-                Aucune source active.
+                No active source.
             </span>
         </li>
     {/if}
     {#each $inputsList as input, iid}
-        {#if showInactives || input.active}
+        {#if input.streams && (showInactives || input.active)}
             {#each Object.keys(input.streams) as idstream}
                 {@const title = input.streams[idstream]}
                 <li class="list-group-item py-3 d-flex flex-column">

ui/src/lib/components/SettingInput.svelte

@@ -0,0 +1,58 @@
+<script>
+ import { createEventDispatcher } from 'svelte';
+
+ import BasicInput from '$lib/components/SettingInputBasic.svelte';
+
+ const dispatch = createEventDispatcher();
+
+ export let field = { };
+ export let id = null;
+ export let value = undefined;
+
+ if (field.type && (value === undefined || value === null)) {
+     if (field.type.startsWith('[]')) {
+         value = [];
+     } else if (field.type === 'int') {
+         value = 0;
+     } else {
+         value = "";
+     }
+ }
+
+ function addElement() {
+     if (field.type.endsWith('int')) {
+         value.push(0);
+     } else {
+         value.push("");
+     }
+     value = value;
+ }
+</script>
+
+{#if field.type.startsWith("[]")}
+    {#each value as val, k}
+        {#if k !== 0}<br>{/if}
+        <BasicInput
+            {field}
+            {id}
+            bind:value={value[k]}
+            on:change={(e) => dispatch('change', e)}
+            on:input={(e) => dispatch('input', e)}
+        />
+    {/each}
+    <button
+        class="btn btn-sm btn-info"
+        on:click={addElement}
+        on:keypress={addElement}
+    >
+        <i class="bi bi-plus" />
+    </button>
+{:else}
+    <BasicInput
+        {field}
+        {id}
+        bind:value={value}
+        on:change={(e) => dispatch('change', e)}
+        on:input={(e) => dispatch('input', e)}
+    />
+{/if}

ui/src/lib/components/SettingInputBasic.svelte

@@ -0,0 +1,31 @@
+<script>
+ import { createEventDispatcher } from 'svelte';
+
+ const dispatch = createEventDispatcher();
+
+ export let field = { };
+ export let id = null;
+ export let value = "";
+</script>
+
+{#if field.type.endsWith('int')}
+    <input
+        type="number"
+        id={id}
+        class="form-control form-control-sm"
+        placeholder={field.placeholder}
+        bind:value={value}
+        on:change={(e) => dispatch('change', e)}
+        on:input={(e) => dispatch('input', e)}
+    >
+{:else}
+    <input
+        type="text"
+        id={id}
+        class="form-control form-control-sm"
+        placeholder={field.placeholder}
+        bind:value={value}
+        on:change={(e) => dispatch('change', e)}
+        on:input={(e) => dispatch('input', e)}
+    >
+{/if}

ui/src/lib/components/SettingsButton.svelte

@@ -0,0 +1,20 @@
+<script>
+ import { page } from '$app/stores';
+
+ export { className as class };
+ let className = '';
+
+ function showModal() {
+
+ }
+</script>
+
+<div class={className}>
+    <a
+        href={$page.route.id == '/settings' ? "/" : "/settings"}
+        class="btn btn-link"
+        class:text-muted={$page.route.id == '/settings'}
+    >
+        <i class="bi bi-gear"></i>
+    </a>
+</div>

ui/src/lib/components/SourceSelection.svelte

@@ -4,12 +4,15 @@
  let activating_source = null;
  async function clickSource(src) {
      activating_source = src.id;
-     if (src.enabled) {
-         await src.deactivate();
-         await sources.refresh();
-     } else {
-         await src.activate();
-         await sources.refresh();
+     try {
+         if (src.enabled) {
+             await src.deactivate();
+             await sources.refresh();
+         } else {
+             await src.activate();
+             await sources.refresh();
+         }
+     } catch {
      }
      activating_source = null;
  }

ui/src/lib/custom_source.js

@@ -0,0 +1,26 @@
+export class CustomSource {
+  constructor(res) {
+    if (res) {
+      this.update(res);
+    }
+  }
+
+  update({ src, kv }) {
+    this.src = src;
+    this.kv = kv;
+  }
+}
+
+export async function retrieveLoadableSources() {
+  const res = await fetch(`api/settings/loadable_sources`, {headers: {'Accept': 'application/json'}})
+  if (res.status == 200) {
+    const data = await res.json();
+    if (data == null) {
+      return {}
+    } else {
+      return data;
+    }
+  } else {
+    throw new Error((await res.json()).errmsg);
+  }
+}

ui/src/lib/settings.js

@@ -0,0 +1,54 @@
+import { CustomSource } from '$lib/custom_source.js';
+
+export class Settings {
+  constructor(res) {
+    if (res) {
+      this.update(res);
+    }
+  }
+
+  update({ custom_sources }) {
+    if (custom_sources) {
+      this.custom_sources = custom_sources.map((e) => new CustomSource(e));
+    } else {
+      this.custom_sources = [];
+    }
+  }
+
+  async save(avoidStructUpdate) {
+    const res = await fetch('api/settings', {
+      headers: {'Accept': 'application/json'},
+      method: 'POST',
+      body: JSON.stringify(this),
+    });
+    if (res.status == 200) {
+      const data = await res.json();
+      if (!avoidStructUpdate) {
+        if (data == null) {
+          this.update({});
+        } else {
+          this.update(data);
+        }
+        return this;
+      } else {
+        return new Settings(data);
+      }
+    } else {
+      throw new Error((await res.json()).errmsg);
+    }
+  }
+}
+
+export async function getSettings() {
+  const res = await fetch(`api/settings`, {headers: {'Accept': 'application/json'}})
+  if (res.status == 200) {
+    const data = await res.json();
+    if (data == null) {
+      return {}
+    } else {
+      return new Settings(data);
+    }
+  } else {
+    throw new Error((await res.json()).errmsg);
+  }
+}

ui/src/lib/stores/loadable-sources.js

@@ -0,0 +1,24 @@
+import { derived, writable } from 'svelte/store';
+
+import { retrieveLoadableSources } from '$lib/custom_source'
+
+function createLoadableSourcesStore() {
+  const { subscribe, set, update } = writable(null);
+
+  return {
+    subscribe,
+
+    set: (v) => {
+      update((m) => v);
+    },
+
+    refresh: async () => {
+      const map = await retrieveLoadableSources();
+      update((m) => map);
+      return map;
+    },
+  };
+
+}
+
+export const loadablesSources = createLoadableSourcesStore();

ui/src/routes/+layout.svelte

@@ -10,6 +10,7 @@
  inputs.refresh();
  setInterval(inputs.refresh, 4500);
 
+ import SettingsButton from '$lib/components/SettingsButton.svelte';
  import SourceSelection from '$lib/components/SourceSelection.svelte';
 
  const version = fetch('api/version', {headers: {'Accept': 'application/json'}}).then((res) => res.json())
@@ -21,13 +22,17 @@
 
 <div class="flex-fill d-flex flex-column">
     <div class="container-fluid flex-fill d-flex flex-column justify-content-start">
+        <div class="position-absolute" style="right: 0.5rem">
+            <SettingsButton />
+        </div>
+
         <div class="my-3">
             <SourceSelection />
         </div>
 
         {#if $activeSources.length === 0 && $activeInputs.length === 0}
             <div class="text-muted text-center mt-1 mb-1">
-                Aucune source active pour l'instant.
+                No active audio source currently.
             </div>
         {:else}
             <marquee>
@@ -38,7 +43,7 @@
                                 {#if source.currentTitle}
                                     <strong>{source.currentTitle}</strong> <span class="text-muted">@ {source.name}</span>
                                 {:else}
-                                    {source.name} activée
+                                    {source.name} enabled
                                 {/if}
                             </div>
                         </div>
@@ -48,14 +53,14 @@
                     <div class="d-inline-block me-3">
                         <div class="d-flex justify-content-between align-items-center">
                             <div>
-                                {#if input.streams.length}
+                                {#if input.streams && input.streams.length}
                                     {#each Object.keys(input.streams) as idstream}
                                         {@const title = input.streams[idstream]}
                                         <strong>{title}</strong>
                                     {/each}
                                     <span class="text-muted">@ {input.name}</span>
                 {:else}
-                                    {input.name} activée
+                                    {input.name} enabled
                                 {/if}
                             </div>
                         </div>

ui/src/routes/+page.svelte

@@ -52,7 +52,7 @@
                     <div class="d-flex justify-content-between">
                         <div>
                             <i class="bi bi-speaker"></i>
-                            Sources
+                            Inputs
                         </div>
                         <button
                             class="btn btn-sm"

ui/src/routes/settings/+page.js

@@ -0,0 +1,24 @@
+import { error } from '@sveltejs/kit';
+import { getSettings } from '$lib/settings';
+import { loadablesSources } from '$lib/stores/loadable-sources.js';
+
+export const load = async({ parent, fetch }) => {
+  const data = await parent();
+
+  await loadablesSources.refresh();
+
+  let settings;
+  try {
+    settings = await getSettings();
+  } catch (err) {
+    throw error(err.status, err.statusText);
+  }
+
+  const version = fetch('/api/version').then((res) => res.json());
+
+  return {
+    ...data,
+    settings,
+    version,
+  };
+}

ui/src/routes/settings/+page.svelte

@@ -0,0 +1,153 @@
+<script>
+ import { invalidate } from '$app/navigation';
+ import { tick } from 'svelte';
+
+ import Input from '$lib/components/SettingInput.svelte';
+ import { loadablesSources } from '$lib/stores/loadable-sources';
+
+ export let data;
+
+ async function submitSettings(avoidStructUpdate) {
+     return await data.settings.save(avoidStructUpdate);
+ }
+
+ function addCustomSource() {
+     data.settings.custom_sources.push({ edit_name: true, kv: { name: "" } });
+     data.settings.custom_sources = data.settings.custom_sources;
+
+     tick().then(() => {
+         document.getElementById("src_name_" + (data.settings.custom_sources.length - 1)).focus();
+     })
+ }
+
+ async function deleteCustomSource(isrc) {
+     data.settings.custom_sources.splice(isrc);
+     data.settings = await submitSettings();
+ }
+</script>
+
+<div class="container">
+    <div class="card my-3">
+        <h4 class="card-header">
+            <div class="d-flex justify-content-between">
+                <div>
+                    <i class="bi bi-gear"></i>
+                    General Settings
+                </div>
+            </div>
+        </h4>
+        <div class="card-body">
+            <span class="text-muted">Version:</span>
+            {#await data.version then version}
+                {version.version}
+            {/await}
+        </div>
+    </div>
+
+    <div class="card my-3">
+        <h4 class="card-header">
+            <div class="d-flex justify-content-between">
+                <div>
+                    <i class="bi bi-cassette"></i>
+                    Custom Sources
+                </div>
+                <button
+                    class="btn btn-sm btn-primary"
+                    on:click={() => addCustomSource()}
+                    on:keypress={() => addCustomSource()}
+                >
+                    <i class="bi bi-plus"></i>
+                </button>
+            </div>
+        </h4>
+        <div class="list-group list-group-flush">
+            {#each data.settings.custom_sources as source, isrc}
+                <div class="list-group-item">
+                    <div class="d-flex justify-content-between align-items-start mb-1">
+                        <div class="d-flex gap-2 align-items-center">
+                            <h5
+                                class="mb-0"
+                                on:click={() => source.edit_name = true}
+                            >
+                                {#if source.kv && source.kv.name !== undefined}
+                                    {#if !source.edit_name}
+                                        {source.kv.name}
+                                    {:else}
+                                        <input
+                                            type="text"
+                                            id={"src_name_" + isrc}
+                                            class="form-control"
+                                            placeholder="Source's name"
+                                            bind:value={data.settings.custom_sources[isrc].kv["name"]}
+                                            on:input={submitSettings}
+                                        >
+                                    {/if}
+                                {:else}
+                                    {source.src} #{isrc}
+                                {/if}
+                            </h5>
+                            {#if source.src}
+                                <small class="badge bg-secondary">{source.src}</small>
+                            {/if}
+                        </div>
+                        <button
+                            type="button"
+                            class="btn btn-sm btn-danger"
+                            on:click={() => deleteCustomSource(isrc)}
+                            on:keypress={() => deleteCustomSource(isrc)}
+                        >
+                            <i class="bi bi-trash"></i>
+                        </button>
+                    </div>
+                    {#if source.src && source.kv}
+                        {#if $loadablesSources[source.src].fields}
+                            {#each $loadablesSources[source.src].fields.filter((e) => e.id !== "name") as field (field.id)}
+                                <div class="d-flex gap-3 mb-2">
+                                    <label for={"input_" + isrc + "_" + field.id} class="form-label">
+                                        {field.label}
+                                    </label>
+                                    <Input
+                                        id={"input_" + isrc + "_" + field.id}
+                                        {field}
+                                        bind:value={data.settings.custom_sources[isrc].kv[field.id]}
+                                        on:input={submitSettings}
+                                    />
+                                </div>
+                            {/each}
+                        {:else}
+                            {#each Object.keys(source.kv).filter((e) => e !== "name") as k}
+                                <div class="d-flex gap-3 mb-2">
+                                    <label for={"input_" + isrc + "_" + k} class="form-label">
+                                        {k}
+                                    </label>
+                                    <Input
+                                        id={"input_" + isrc + "_" + k}
+                                        {field}
+                                        bind:value={data.settings.custom_sources[isrc].kv[k]}
+                                        on:input={submitSettings}
+                                    />
+                                </div>
+                            {/each}
+                        {/if}
+                    {:else}
+                        Choose a new custom source:
+                        <div class="d-flex gap-3">
+                            {#if $loadablesSources}
+                                {#each Object.keys($loadablesSources) as kls}
+                                    <button
+                                        class="btn btn-sm btn-primary"
+                                        title={$loadablesSources[kls].description}
+                                        on:click={() => data.settings.custom_sources[isrc].src = kls}
+                                        on:keypress={() => data.settings.custom_sources[isrc].src = kls}
+                                    >
+                                        {kls}
+                                    </button>
+                                {/each}
+                            {/if}
+                        </div>
+                    {/if}
+                </div>
+            {/each}
+        </div>
+    </div>
+</div>