增加景点长播放语音功能

custom/attr_broadcast/src/attr_broadcast.c

@@ -28,18 +28,31 @@
 #define PLAY_DISTANCE_THRESHOLD 50.0 // 有效播报距离(米)
 #define DISTANCE_CHANGE_THRESHOLD 10.0 // 距离变化阈值(米)
 #define TTS_PRIORITY 5           // TTS播报优先级
+#define MAX_TTS_SEGMENT_LEN 50   // TTS每段最大长度(字符)
+
 
 static nmeaPARSER parser;
 
 //该版本仅实现基本的靠近播报功能，长文字播放功能待开发
 
 
-// 全局景点链表
+// 文本分段结构 [新增]
+typedef struct {
+    char** segments;    // 分段文本数组
+    int count;          // 分段数量
+} SegmentedText;
+
+
+// 修改景点节点结构 [修改]
 typedef struct AttractionNode {
-    Attraction attraction;
+    double longitude;
+    double latitude;
+    char name[50];
+    SegmentedText description; // 从char[]改为SegmentedText结构 [关键修改]
     struct AttractionNode* next;
 } AttractionNode;
 
+
 // 播报状态
 typedef struct {
     AttractionNode* last_broadcast;
@@ -76,6 +89,48 @@ static int tts_volume = 10;
 static osThreadId_t Attr_Broadcast_ThreadId = NULL; //串口数据接收、解析任务Handle
 
 
+// 智能分段函数 
+SegmentedText smart_segment_text(const char* text, int max_segment_len) {
+    SegmentedText result = {0};
+    if (!text || *text == '\0') return result;
+    
+    int text_len = strlen(text);
+    int max_segments = (text_len / max_segment_len) + 2;
+    result.segments = cm_malloc(max_segments * sizeof(char*));
+    
+    int start = 0;
+    int segment_count = 0;
+    
+    while (start < text_len && segment_count < max_segments) {
+        int end = start + max_segment_len;
+        if (end > text_len) end = text_len;
+        
+        if (end < text_len) {
+            // 寻找最佳分割点（标点符号优先）
+            int best_break = end;
+            for (int i = end; i > start; i--) {
+                if (strchr("。！？，;.!?", text[i])) {
+                    best_break = i + 1;
+                    break;
+                }
+            }
+            end = best_break;
+        }
+        
+        // 创建分段
+        int seg_len = end - start;
+        result.segments[segment_count] = cm_malloc(seg_len + 1);
+        strncpy(result.segments[segment_count], text + start, seg_len);
+        result.segments[segment_count][seg_len] = '\0';
+        segment_count++;
+        
+        start = end;
+    }
+    
+    result.count = segment_count;
+    return result;
+}
+
 
 
 //多文字tts，景区播报专用
@@ -92,6 +147,18 @@ void safe_tts_play(const char* segments[], int count) {
 }
 
 
+// 释放分段内存 [新增]
+void free_segmented_text(SegmentedText* st) {
+    if (st && st->segments) {
+        for (int i = 0; i < st->count; i++) {
+            cm_free(st->segments[i]);
+        }
+        cm_free(st->segments);
+        st->segments = NULL;
+        st->count = 0;
+    }
+}
+
 
 //计算到景点的距离
 double location_service_calculate_distance(Location loc1, Location loc2) {
@@ -141,11 +208,13 @@ void attr_broadcast_add_attraction(double lon, double lat,
     }
     
     // 填充景点信息
-    new_node->attraction.longitude = lon;
-    new_node->attraction.latitude = lat;
-    strncpy(new_node->attraction.name, name, sizeof(new_node->attraction.name)-1);
-    strncpy(new_node->attraction.description, desc, sizeof(new_node->attraction.description)-1);
-    
+    new_node->longitude = lon;
+    new_node->latitude = lat;
+    strncpy(new_node->name, name, sizeof(new_node->name)-1);
+    new_node->name[sizeof(new_node->name)-1] = '\0';
+
+    new_node->description = smart_segment_text(desc, MAX_TTS_SEGMENT_LEN);
+
     // 添加到链表头部
     new_node->next = attractions_head;
     attractions_head = new_node;
@@ -154,6 +223,26 @@ void attr_broadcast_add_attraction(double lon, double lat,
 }
 
 
+// 释放所有景点内存    最新添加
+void attr_broadcast_free_all() {
+    if (attractions_mutex == NULL) return;
+    
+    osMutexAcquire(attractions_mutex, osWaitForever);
+    
+    AttractionNode* current = attractions_head;
+    while (current) {
+        AttractionNode* next = current->next;
+        free_segmented_text(&current->description);
+        cm_free(current);
+        current = next;
+    }
+    
+    attractions_head = NULL;
+    osMutexRelease(attractions_mutex);
+}
+
+
+
 // 设置播报距离阈值 (米)
 void attr_broadcast_set_distance_threshold(double threshold) {
     if (threshold > 0) {
@@ -171,13 +260,13 @@ static AttractionNode* find_nearest_attraction(Location current_pos) {
     AttractionNode* current = attractions_head;
     AttractionNode* nearest = attractions_head;
     double min_distance = location_service_calculate_distance(
-        (Location){current->attraction.longitude, current->attraction.latitude},
+        (Location){current->longitude, current->latitude},
         current_pos
     );
     
     while (current != NULL) {
         double distance = location_service_calculate_distance(
-            (Location){current->attraction.longitude, current->attraction.latitude},
+            (Location){current->longitude, current->latitude},
             current_pos
         );
         
@@ -197,25 +286,34 @@ static AttractionNode* find_nearest_attraction(Location current_pos) {
 static void play_attraction_info(AttractionNode* attraction, double distance) {
     if (!attraction) return;
     
-    // 构建播报文本
-    char buffer[300];
-    snprintf(buffer, sizeof(buffer), "您已到达%s，%s。距离%.1f米。",
-             attraction->attraction.name,
-             attraction->attraction.description,
-             distance);
-
-        
-    broadcast_state.is_playing = 1;
-    // 调用TTS接口播放文本
-    local_tts_text_play(buffer, 0, 1);
+    // 构建距离提示
+    char distance_msg[100];
+    snprintf(distance_msg, sizeof(distance_msg), "您已到达%s，距离%.1f米。",
+             attraction->name, distance);
     
-    //等待
-    while(local_tts_get_play_state() != 0) {
-        osDelay(100);
+    // 创建播放数组（距离提示 + 所有描述分段）
+    int total_segments = attraction->description.count + 1;
+    const char** segments = cm_malloc(total_segments * sizeof(char*));
+    if (!segments) return;
+    
+    segments[0] = distance_msg;
+    for (int i = 0; i < attraction->description.count; i++) {
+        segments[i+1] = attraction->description.segments[i];
     }
+    
+    broadcast_state.is_playing = 1;
+    DEBUG("Playing attraction info: %s (%d segments)\n", 
+          attraction->name, total_segments);
+    
+    // 播放所有分段
+    safe_tts_play(segments, total_segments);
+    
+    cm_free(segments);
+    
     // 更新播报状态
     broadcast_state.last_broadcast = attraction;
     broadcast_state.last_distance = distance;
+    broadcast_state.is_playing = 0;
 }
 
 
@@ -247,7 +345,7 @@ static void attr_broadcast_task(void* arg) {
         if (nearest != NULL) {
             // 计算距离
             double distance = location_service_calculate_distance(
-                (Location){nearest->attraction.longitude, nearest->attraction.latitude},
+                (Location){nearest->longitude, nearest->latitude},
                 current_pos
             );
             
@@ -314,7 +412,7 @@ void attr_broadcast_init(void) {
 
     osThreadAttr_t attr_broadcast_task_attr = {0};
     attr_broadcast_task_attr.name = "attr_broadcast_task";
-    attr_broadcast_task_attr.stack_size = 4096 * 5;
+    attr_broadcast_task_attr.stack_size = 4096 * 8;
     attr_broadcast_task_attr.priority= osPriorityNormal;
 
     Attr_Broadcast_ThreadId= osThreadNew(attr_broadcast_task, 0, &attr_broadcast_task_attr);