fix: 修复音乐和临时广播无法播放(AUDIO FREE)的问题

- 重写 waitForInterruptibleDelay/waitForNativeSpeakersEmpty 使用 os.clock()
  轮询，替换会抢占 websocket_message 事件的 os.pullEvent()
- 重写 queueSamplesSynchronized/playChunkOnSpeakers 重试循环使用
  os.sleep() 轮询，不再调用 pullEvent 吞掉音频分块事件
- 重写 Audio.createStream().read() 与 Audio.playerLoop 使用 sleep 轮询，
  不再使用 os.pullEvent('audio_chunk')/'audio_queue' 抢事件
- 修复 Audio.playItem 将 wav-stream/wav-stream-live 错误路由到
  playPcmS16LEItem，改为路由到 playWavStreamItem（服务端分块每块
  带完整 44 字节 WAV 头，需 decodeWavChunkToSamples）
- Network.messageLoop audio_start 分支将 wav-stream-live 加入流式
  接收判定，避免走 chunks 缓冲逻辑
- 版本号升级至 v1.0.97

station_broadcast.lua

@@ -1,6 +1,6 @@
 
 -- 1. Configuration & Constants
-local APP_VERSION_TEXT = "v1.0.76"
+local APP_VERSION_TEXT = "v1.0.97"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -1053,18 +1053,16 @@ function Audio.createStream()
     stream.push = function(chunk)
         if type(chunk) ~= "string" then return end
         table.insert(chunks, chunk)
-        os.queueEvent("audio_chunk")
     end
     
     stream.finish = function()
         finished = true
-        os.queueEvent("audio_chunk")
     end
     
     stream.read = function()
         while #chunks == 0 do
             if finished then return nil end
-            os.pullEvent("audio_chunk")
+            os.sleep(0.02)
         end
         return table.remove(chunks, 1)
     end
@@ -1156,7 +1154,6 @@ function Audio.enqueueItem(item)
         idx = idx + 1
     end
     table.insert(State.audioQueue, idx, item)
-    os.queueEvent("audio_queue")
 end
 
 function Audio.stop(mode, flushBelow)
@@ -1194,41 +1191,46 @@ local function shouldStop(playSeq)
 end
 
 local function waitForInterruptibleDelay(playSeq, seconds)
-    local timer = os.startTimer(seconds)
+    local endTime = os.clock() + seconds
-    while true do
+    while os.clock() < endTime do
-        local ev = { os.pullEvent() }
+        if shouldStop(playSeq) then
-        if ev[1] == "audio_interrupt" and tonumber(ev[2]) and tonumber(ev[2]) >= playSeq then
             return false
         end
-        if ev[1] == "timer" and ev[2] == timer then
+        local remaining = endTime - os.clock()
-            return true
+        if remaining <= 0 then break end
-        end
+        local sleepTime = math.min(remaining, 0.02)
+        os.sleep(sleepTime)
     end
+    return not shouldStop(playSeq)
 end
 
 local function waitForNativeSpeakersEmpty(speakers, playSeq)
-    local waiting = {}
+    local maxWait = os.clock() + 2.0
-    for _, sp in ipairs(speakers or {}) do
+    while os.clock() < maxWait do
-        local name = peripheral.getName(sp)
-        if name then waiting[name] = true end
-    end
-
-    local timerId = os.startTimer(2.0) -- Maximum 2 seconds wait for empty
-    while next(waiting) do
         if shouldStop(playSeq) then return false end
-        local ev = { os.pullEvent() }
+        local allEmpty = true
-        if ev[1] == "audio_interrupt" and tonumber(ev[2]) and tonumber(ev[2]) >= playSeq then
+        for _, sp in ipairs(speakers or {}) do
-            return false
+            local playing = false
+            local queued = 0
+            pcall(function()
+                if type(sp.speakIsPlaying) == "function" then
+                    playing = sp.speakIsPlaying() and true or false
+                end
+                if type(sp.speakQueueSize) == "function" then
+                    queued = tonumber(sp.speakQueueSize()) or 0
+                end
+            end)
+            if playing or queued > 0 then
+                allEmpty = false
+                break
+            end
         end
-        if ev[1] == "timer" and ev[2] == timerId then
+        if allEmpty then
-            Utils.log("WARN", "Timeout waiting for native speakers to empty")
+            return true
-            break
-        end
-        if ev[1] == "speaker_audio_empty" and ev[2] and waiting[ev[2]] then
-            waiting[ev[2]] = nil
         end
+        os.sleep(0.02)
     end
-
+    Utils.log("WARN", "Timeout waiting for native speakers to empty (polling)")
     return true
 end
 
@@ -1246,6 +1248,7 @@ local function queueSamplesSynchronized(samples, volume, playSeq)
         end
     end
 
+    local maxAttempts = 400
     while next(pending) do
         if shouldStop(playSeq) then return false end
         for name, sp in pairs(pending) do
@@ -1258,17 +1261,12 @@ local function queueSamplesSynchronized(samples, volume, playSeq)
             end
         end
         if next(pending) then
-            local timerId = os.startTimer(0.05)
+            maxAttempts = maxAttempts - 1
-            while true do
+            if maxAttempts <= 0 then
-                local ev = { os.pullEvent() }
+                Utils.log("WARN", "Speaker buffer full or failed, skipping chunk (sync)")
-                if ev[1] == "audio_interrupt" and tonumber(ev[2]) and tonumber(ev[2]) >= playSeq then
+                break
-                    return false
-                elseif ev[1] == "timer" and ev[2] == timerId then
-                    break
-                elseif ev[1] == "speaker_audio_empty" then
-                    break
-                end
             end
+            os.sleep(0.05)
         end
     end
 
@@ -1286,7 +1284,7 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
     end
 
     local usedNativePath = false
-    local maxAttempts = 20
+    local maxAttempts = 400
     while next(pending) do
         if shouldStop(playSeq) then return false end
         for name, sp in pairs(pending) do
@@ -1307,17 +1305,7 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
                 Utils.log("WARN", "Speaker buffer full or failed, skipping chunk")
                 break
             end
-            local timerId = os.startTimer(0.05)
+            os.sleep(0.05)
-            while true do
-                local ev = { os.pullEvent() }
-                if ev[1] == "audio_interrupt" and tonumber(ev[2]) and tonumber(ev[2]) >= playSeq then
-                    return false
-                elseif ev[1] == "timer" and ev[2] == timerId then
-                    break
-                elseif ev[1] == "speaker_audio_empty" then
-                    break
-                end
-            end
         end
     end
 
@@ -1327,7 +1315,7 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
         local controller = Peripherals.speakers[1]
         if controller and type(controller.playAudioAll) == "function" then
             Utils.log("WARN", "Falling back to controller.playAudioAll for decoded samples")
-            local maxAttempts = 20
+            local maxAttempts2 = 400
             while true do
                 if shouldStop(playSeq) then return false end
                 local ok = false
@@ -1335,22 +1323,12 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
                     ok = controller.playAudioAll(samples, volume)
                 end)
                 if ok then break end
-                maxAttempts = maxAttempts - 1
+                maxAttempts2 = maxAttempts2 - 1
-                if maxAttempts <= 0 then
+                if maxAttempts2 <= 0 then
                     Utils.log("WARN", "Controller buffer full or failed, skipping chunk")
                     break
                 end
-                local timerId = os.startTimer(0.05)
+                os.sleep(0.05)
-                while true do
-                    local ev = { os.pullEvent() }
-                    if ev[1] == "audio_interrupt" and tonumber(ev[2]) and tonumber(ev[2]) >= playSeq then
-                        return false
-                    elseif ev[1] == "timer" and ev[2] == timerId then
-                        break
-                    elseif ev[1] == "speaker_audio_empty" then
-                        break
-                    end
-                end
             end
         else
             return false
@@ -2027,7 +2005,7 @@ function Audio.playItem(item)
     elseif format == "pcm" then
         return Audio.playPcmItem(item)
     elseif format == "wav-stream" or format == "wav-stream-live" then
-        return Audio.playPcmS16LEItem(item)
+        return Audio.playWavStreamItem(item)
     end
     return Audio.playDfpwmItem(item)
 end
@@ -2035,7 +2013,7 @@ end
 function Audio.playerLoop()
     while true do
         if #State.audioQueue == 0 then
-            os.pullEvent("audio_queue")
+            os.sleep(0.05)
         else
             local item = table.remove(State.audioQueue, 1)
             State.currentPlaying = item
@@ -2403,12 +2381,12 @@ function Network.messageLoop()
                             audioId = data.audioId
                         })
                         State.audioRx = nil
-                    elseif audioFormat == "dfpwm" or audioFormat == "pcm" or audioFormat == "wav-stream" then
+                    elseif audioFormat == "dfpwm" or audioFormat == "pcm" or audioFormat == "wav-stream" or audioFormat == "wav-stream-live" then
                         local stream = Audio.createStream()
                         State.audioRx.stream = stream
                         if audioFormat == "pcm" then
                             Utils.log("INFO", "Receiving live PCM audio stream")
-                        elseif audioFormat == "wav-stream" then
+                        elseif audioFormat == "wav-stream" or audioFormat == "wav-stream-live" then
                             Utils.log("INFO", "Receiving live WAV chunk stream")
                         end
                         Audio.enqueueItem({