创建线程解析packet并存入队列

include/decoder.h

@@ -6,23 +6,15 @@ extern "C" {
 #include "libavutil/imgutils.h"
 }
 #include <queue>
-#include <thread>
 #include <condition_variable>
 #include <mutex>
 
-struct VideoParam
-{
-	AVFormatContext* fmtCtx;
-	AVCodecContext* codecCtx;
-	int width;
-	int height;
-	int videoStreamIndex;
-};
-
 template<typename T>
 	requires std::is_same_v<T, AVPacket> || std::is_same_v<T, AVFrame>
 struct MediaQueue 
 {
+	static constexpr int MAX_SIZE = 500;
+	bool full = false;
 	std::queue<T> queue;
 	std::condition_variable cv;
 	std::mutex mut;
@@ -31,6 +23,7 @@ struct MediaQueue
 	uint32_t count;
 
 	MediaQueue() = default;
+	bool isFill() const { return full; }
 	bool push(const T* item);
 	bool pop(T* item, bool block = false, bool quit = false);
 };
@@ -38,18 +31,22 @@ struct MediaQueue
 template <typename T> requires std::is_same_v<T, AVPacket> || std::is_same_v<T, AVFrame>
 bool MediaQueue<T>::push(const T* item) {
 	if (item == nullptr) return false;
+	if (count >= MAX_SIZE)
+		return false;
 	std::unique_lock lock(mut);
 	if constexpr (std::is_same_v<T, AVPacket>) {
 		auto temp = av_packet_alloc();
 		av_packet_ref(temp, item);
-		queue.push(*temp);
 		size += temp->size;
-		count++;
+		queue.push(*temp);
 	}else if(std::is_same_v<T, AVFrame>) {
 		auto temp = av_frame_alloc();
 		av_frame_ref(temp, item);
 		queue.push(*temp);
-		count++;
+	}
+	count++;
+	if(count >= MAX_SIZE) {
+		full = true;
 	}
 	cv.notify_all();
 	return true;
@@ -75,6 +72,7 @@ bool MediaQueue<T>::pop(T* item, bool block, bool quit) {
 			}
 			queue.pop();
 			count--;
+			full = false;
 			return true; 
 		}
 		else if (block) {
@@ -88,8 +86,22 @@ bool MediaQueue<T>::pop(T* item, bool block, bool quit) {
 }
 
 
+struct VideoParam
+{
 
+	MediaQueue<AVPacket> queue;
+	AVFormatContext* fmtCtx;
+	AVCodecContext* codecCtx;
+	int width;
+	int height;
+	int videoStreamIndex;
+
+	bool eof = false;
+	bool pause = false;
+	bool quit = false;
+};
 
 void InitDecoder(const char* filepath, VideoParam& param);
+void RequestPacket(VideoParam& param);
 AVFrame* RequestFrame(VideoParam& param);
 #endif