stream 播放支持选择 ffmpeg 配置

组件化 manage-database

internal/pkg/api/api.go

@@ -10,6 +10,7 @@ import (
 	"os"
 	"os/exec"
 	"strconv"
+	"strings"
 )
 
 type API struct {
@@ -19,6 +20,20 @@ type API struct {
 	APIConfig APIConfig
 }
 
+type FfmpegConfigs struct {
+	FfmpegConfigs map[string]*FfmpegConfig `json:"ffmpeg_configs"`
+}
+
+type AddFfmpegConfigRequest struct {
+	Token string `json:"token"`
+	FfmpegConfig FfmpegConfig `json:"ffmpeg_config"`
+}
+
+type FfmpegConfig struct {
+	Name string `json:"name"`
+	Args string `json:"args"`
+}
+
 type Status struct {
 	Status string `json:"status,omitempty"`
 }
@@ -310,6 +325,12 @@ func (api *API) HandleGetFileStream(w http.ResponseWriter, r *http.Request) {
 		api.HandleErrorString(w, r, `parameter "id" should be an integer`)
 		return
 	}
+	configs := q["config"]
+	if len(configs) == 0 {
+		api.HandleErrorString(w, r, `parameter "config" can't be empty`)
+		return
+	}
+	configName := configs[0]
 	file, err := api.Db.GetFile(int64(id))
 	if err != nil {
 		api.HandleError(w, r, err)
@@ -322,16 +343,19 @@ func (api *API) HandleGetFileStream(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	log.Println("[api] Stream file", path)
+	log.Println("[api] Stream file", path, configName)
 
-	cmd := exec.Command("ffmpeg",
-		"-i", path,
-		"-c:a", "libopus",
-		"-ab", "128k",
-		"-vn",
-		"-f", "matroska",
-		"-",
-	)
+	ffmpegConfig, ok := api.APIConfig.FfmpegConfigs[configName]
+	if !ok {
+		api.HandleErrorStringCode(w, r, `ffmpeg config not found`, 404)
+		return
+	}
+	args := strings.Split(ffmpegConfig.Args, " ")
+	startArgs := []string {"-i", path}
+	endArgs := []string {"-vn", "-f", "matroska", "-"}
+	ffmpegArgs := append(startArgs, args...)
+	ffmpegArgs = append(ffmpegArgs, endArgs...)
+	cmd := exec.Command("ffmpeg", ffmpegArgs...)
 	cmd.Stdout = w
 	err = cmd.Run()
 	if err != nil {
@@ -409,10 +433,56 @@ func (api *API) HandleGetFile(w http.ResponseWriter, r *http.Request) {
 	io.Copy(w, src)
 }
 
+func (api *API) HandleGetFfmpegConfigs(w http.ResponseWriter, r *http.Request) {
+	log.Println("[api] Get ffmpeg config list")
+	ffmpegConfigs:= &FfmpegConfigs{
+		FfmpegConfigs: api.APIConfig.FfmpegConfigs,
+	}
+	json.NewEncoder(w).Encode(&ffmpegConfigs)
+}
+
+func (api *API) HandleAddFfmpegConfig(w http.ResponseWriter, r *http.Request) {
+	addFfmpegConfigRequest := AddFfmpegConfigRequest{}
+	err := json.NewDecoder(r.Body).Decode(&addFfmpegConfigRequest)
+	if err != nil {
+		api.HandleError(w, r, err)
+		return
+	}
+
+	// check token
+	err = api.CheckToken(w, r, addFfmpegConfigRequest.Token)
+	if err != nil {
+		return
+	}
+
+	// check name and args not null
+	if addFfmpegConfigRequest.FfmpegConfig.Name == "" {
+		api.HandleErrorString(w, r, `"ffmpeg_config.name" can't be empty`)
+		return
+	}
+	if addFfmpegConfigRequest.FfmpegConfig.Args == "" {
+		api.HandleErrorString(w, r, `"ffmpeg_config.args" can't be empty`)
+		return
+	}
+
+	log.Println("[api] Add ffmpeg config")
+
+	api.APIConfig.FfmpegConfigs[addFfmpegConfigRequest.FfmpegConfig.Name] = &addFfmpegConfigRequest.FfmpegConfig
+	api.HandleOK(w, r)
+}
+
+func NewAPIConfig() (APIConfig) {
+	apiConfig := APIConfig{
+		FfmpegConfigs: make(map[string]*FfmpegConfig),
+	}
+	return apiConfig
+}
+
 type APIConfig struct {
-	DatabaseName string
-	Addr string
-	Token string
+	DatabaseName string `json:"database_name"`
+	Addr string `json:"addr"`
+	Token string `json:"token"`
+	FfmpegConfigs map[string]*FfmpegConfig `json:"ffmpeg_configs"`
 }
 
 func NewAPI(apiConfig APIConfig) (*API, error) {
@@ -444,9 +514,11 @@ func NewAPI(apiConfig APIConfig) (*API, error) {
 	apiMux.HandleFunc("/get_files_in_folder", api.HandleGetFilesInFolder)
 	apiMux.HandleFunc("/get_random_files", api.HandleGetRandomFiles)
 	apiMux.HandleFunc("/get_file_stream", api.HandleGetFileStream)
+	apiMux.HandleFunc("/get_ffmpeg_config_list", api.HandleGetFfmpegConfigs)
 	// below needs token
 	apiMux.HandleFunc("/walk", api.HandleWalk)
 	apiMux.HandleFunc("/reset", api.HandleReset)
+	apiMux.HandleFunc("/add_ffmpeg_config", api.HandleAddFfmpegConfig)
 
 	mux.Handle("/api/v1/", http.StripPrefix("/api/v1", apiMux))
 	mux.Handle("/web/", http.StripPrefix("/web", http.FileServer(http.Dir("web"))))

main.go

@@ -18,11 +18,18 @@ func init() {
 
 func main() {
 	flag.Parse()
-	apiConfig := api.APIConfig{
-		DatabaseName: DatabaseName,
-		Addr: Listen,
-		Token: Token,
+	apiConfig := api.NewAPIConfig()
+	apiConfig.FfmpegConfigs["libopus 128k"] = &api.FfmpegConfig{
+		Name: "libopus 128k",
+		Args: "-c:a libopus -ab 128k",
 	}
+	apiConfig.FfmpegConfigs["libopus 256k"] = &api.FfmpegConfig{
+		Name: "libopus 256k",
+		Args: "-c:a libopus -ab 256k",
+	}
+	apiConfig.DatabaseName = DatabaseName
+	apiConfig.Addr = Listen
+	apiConfig.Token = Token
 	api, err := api.NewAPI(apiConfig)
 	if err != nil {
 		log.Fatal(err)

web/index.html

@@ -26,7 +26,7 @@
 			</nav>
 		</header>
 		<main>
-			<router-view @set_token="set_token" @play_audio="play_audio"></router-view>
+			<router-view :token="token" @set_token="set_token" @play_audio="play_audio"></router-view>
 		</main>
 		<footer>
 			<component-audio-player :file=playing_audio_file></component-audio-player>

web/index.js

@@ -149,10 +149,6 @@ const component_manage= {
 	emits: ['set_token'],
 	data() {
 		return {
-			root: "",
-			pattern: [".flac", ".mp3"],
-			pattern_tmp: "",
-			s: "",
 		}
 	},
 	template: `
@@ -161,6 +157,22 @@ const component_manage= {
 <p>本站是 MSW Project 的一个应用，希望以个人之力分享被隐藏在历史中的音乐。</p>
 <p>自己是V家厨，喜欢的p主包括 wonder-k, buzzG, *luna 等，但却因为种种原因淹没在主流音乐APP的曲库中。本站的初衷是为了让那些知名度低的 VOCALOID / ACG / 东方曲，能够被更多有缘人听到，同时有一个跨平台的工具，能够在低网速的条件下享受硬盘中的无损音乐。</p>
 <component-token :token="token" @set_token="$emit('set_token', $event)"></component-token>
+<component-manage-database :token="token"></component-manage-database>
+</div>
+`,
+}
+const component_manage_database = {
+	props: ['token'],
+	data() {
+		return {
+			root: "",
+			pattern: [".flac", ".mp3"],
+			pattern_tmp: "",
+			s: "",
+		}
+	},
+	template: `
+<div>
 <table>
 <tbody>
 <tr>
@@ -352,24 +364,33 @@ const component_audio_player = {
 	data() {
 		return {
 			loop: true,
+			ffmpeg_config: {},
 		}
 	},
 	props: ["file"],
 	template: `
+<div>
 <div v-if="computed_show">
 <span>{{ file.filename }} / {{ file.foldername }}</span><br />
 <input type="checkbox" v-model="loop" />
 <label>Loop</label><br />
-<video class="audio-player" :src="computed_playing_audio_file_url" controls autoplay :loop="loop">
+<video v-if="computed_show" class="audio-player" :src="computed_playing_audio_file_url" controls autoplay :loop="loop">
 </video>
 </div>
+<component-stream-config @set_ffmpeg_config="set_ffmpeg_config"></component-stream-config>
+</div>
 `,
+	methods: {
+		set_ffmpeg_config(ffmpeg_config) {
+			this.ffmpeg_config = ffmpeg_config
+		},
+	},
 	computed: {
 		computed_playing_audio_file_url() {
 			if (this.file.play_back_type === 'raw') {
 				return '/api/v1/get_file_direct?id=' + this.file.id
 			} else if (this.file.play_back_type === 'stream') {
-				return '/api/v1/get_file_stream?id=' + this.file.id
+				return '/api/v1/get_file_stream?id=' + this.file.id + '&config=' + this.ffmpeg_config.name
 			}
 		},
 		computed_show() {
@@ -480,6 +501,46 @@ const component_get_random_files = {
 	},
 }
 
+const component_stream_config = {
+	emits: ['set_ffmpeg_config'],
+	data() {
+		return {
+			ffmpeg_config_list: [],
+			selected_ffmpeg_config: {},
+		}
+	},
+	template: `
+<div>
+<select v-model="selected_ffmpeg_config">
+	<option v-for="ffmpeg_config in ffmpeg_config_list" :value="ffmpeg_config">
+		{{ ffmpeg_config.name }}
+	</option>
+</select>
+</div>
+`,
+	mounted() {
+		axios.get('/api/v1/get_ffmpeg_config_list',
+		).then(response => {
+			var ffmpeg_configs = response.data.ffmpeg_configs
+			var tmp_list = []
+			for (var key in ffmpeg_configs) {
+				tmp_list.push(ffmpeg_configs[key])
+			}
+			tmp_list.sort()
+			this.ffmpeg_config_list = tmp_list
+			this.selected_ffmpeg_config = this.ffmpeg_config_list[0]
+		}).catch(err => {
+			this.ffmpeg_config_list = [{name: 'No avaliable config'}]
+			this.selected_ffmpeg_config = this.ffmpeg_config_list[0]
+		})
+	},
+	watch: {
+		selected_ffmpeg_config(n, o) {
+			this.$emit('set_ffmpeg_config', this.selected_ffmpeg_config)
+		},
+	},
+}
+
 const routes = [
 	{ path: '/', component: component_get_random_files},
 	{ path: '/search_files', component: component_search_files},
@@ -517,6 +578,8 @@ app.component('component-search-files', component_search_files)
 app.component('component-get-random-files', component_get_random_files)
 app.component('component-file-dialog', component_file_dialog)
 app.component('component-token', component_token)
+app.component('component-stream-config', component_stream_config)
+app.component('component-manage-database', component_manage_database)
 
 app.use(router)