fix(audio): 修复导致完全没有声音的回归错误，添加超时防止挂起，修复等待缓冲区清空的逻辑

station_broadcast-warning.lua

@@ -61,6 +61,7 @@ local function playDfpwmFile(path, volume)
             for _, sp in ipairs(speakers) do
                 pending[peripheral.getName(sp)] = sp
             end
+            local maxAttempts = 20
             while next(pending) do
                 for name, sp in pairs(pending) do
                     if sp.playAudio(samples, volume) then
@@ -68,6 +69,10 @@ local function playDfpwmFile(path, volume)
                     end
                 end
                 if next(pending) then
+                    maxAttempts = maxAttempts - 1
+                    if maxAttempts <= 0 then
+                        break
+                    end
                     local timerId = os.startTimer(0.05)
                     while true do
                         local ev = { os.pullEvent() }

station_broadcast.lua

@@ -1,6 +1,6 @@
 
 -- 1. Configuration & Constants
-local APP_VERSION_TEXT = "v1.0.66"
+local APP_VERSION_TEXT = "v1.0.67"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -1216,12 +1216,17 @@ local function waitForNativeSpeakersEmpty(speakers, playSeq)
         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() }
         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] == timerId then
+            Utils.log("WARN", "Timeout waiting for native speakers to empty")
+            break
+        end
         if ev[1] == "speaker_audio_empty" and ev[2] and waiting[ev[2]] then
             waiting[ev[2]] = nil
         end
@@ -1284,6 +1289,7 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
     end
 
     local usedNativePath = false
+    local maxAttempts = 20
     while next(pending) do
         if shouldStop(playSeq) then return false end
         for name, sp in pairs(pending) do
@@ -1299,6 +1305,11 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
             end
         end
         if next(pending) then
+            maxAttempts = maxAttempts - 1
+            if maxAttempts <= 0 then
+                Utils.log("WARN", "Speaker buffer full or failed, skipping chunk")
+                break
+            end
             local timerId = os.startTimer(0.05)
             while true do
                 local ev = { os.pullEvent() }
@@ -1319,6 +1330,7 @@ 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
             while true do
                 if shouldStop(playSeq) then return false end
                 local ok = false
@@ -1326,6 +1338,11 @@ local function playChunkOnSpeakers(samples, volume, playSeq, waitForDrain)
                     ok = controller.playAudioAll(samples, volume)
                 end)
                 if ok then break end
+                maxAttempts = maxAttempts - 1
+                if maxAttempts <= 0 then
+                    Utils.log("WARN", "Controller buffer full or failed, skipping chunk")
+                    break
+                end
                 local timerId = os.startTimer(0.05)
                 while true do
                     local ev = { os.pullEvent() }
@@ -1765,7 +1782,7 @@ function Audio.playDfpwmItem(item)
         if chunk == nil then break end
         if type(chunk) == "string" and #chunk > 0 then
             local samples = decoder(chunk)
-            if samples and not playChunkOnSpeakers(samples, CONFIG.AUDIO_VOLUME, playSeq) then
+            if samples and not playChunkOnSpeakers(samples, CONFIG.AUDIO_VOLUME, playSeq, false) then
                 break
             end
         end
@@ -1826,7 +1843,7 @@ function Audio.playPcmItem(item)
         if chunk == nil then break end
         if type(chunk) == "string" and #chunk > 0 then
             local samples = decodePcmS8Chunk(chunk)
-            if samples and not playChunkOnSpeakers(samples, CONFIG.AUDIO_VOLUME, playSeq) then
+            if samples and not playChunkOnSpeakers(samples, CONFIG.AUDIO_VOLUME, playSeq, false) then
                 Audio.stop("current")
                 break
             end
@@ -1888,7 +1905,7 @@ function Audio.playPcmS16LEItem(item)
         if chunk == nil then break end
         if type(chunk) == "string" and #chunk > 0 then
             local samples = decodePcmS16LEChunk(chunk)
-            if samples and not playChunkOnSpeakers(samples, CONFIG.AUDIO_VOLUME, playSeq) then
+            if samples and not playChunkOnSpeakers(samples, CONFIG.AUDIO_VOLUME, playSeq, false) then
                 Audio.stop("current")
                 break
             end