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https://github.com/ZLMediaKit/ZLMediaKit.git
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Merge branch 'master' of https://github.com/ZLMediaKit/ZLMediaKit
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commit
7d456a0513
@ -724,6 +724,14 @@ std::shared_ptr<MediaSourceEvent> MediaSourceEventInterceptor::getDelegate() con
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/////////////////////////////////////FlushPolicy//////////////////////////////////////
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template<>
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bool PacketCache<RtpPacket>::flushImmediatelyWhenCloseMerge() {
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//因为rtp的包很小,一个RtpPacket包中也不是完整的一帧图像,所以在关闭合并写时,
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//还是有必要缓冲一帧的rtp(也就是时间戳相同的rtp)再输出,这样虽然会增加一帧的延时
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//但是却对性能提升很大,这样做还是比较划算的
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return false;
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}
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static bool isFlushAble_default(bool is_video, uint64_t last_stamp, uint64_t new_stamp, size_t cache_size) {
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if (new_stamp + 500 < last_stamp) {
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//时间戳回退比较大(可能seek中),由于rtp中时间戳是pts,是可能存在一定程度的回退的
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@ -342,7 +342,8 @@ public:
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virtual ~PacketCache() = default;
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void inputPacket(uint64_t stamp, bool is_video, std::shared_ptr<packet> pkt, bool key_pos) {
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if (_policy.isFlushAble(is_video, key_pos, stamp, _cache->size())) {
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bool flush = flushImmediatelyWhenCloseMerge();
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if (!flush && _policy.isFlushAble(is_video, key_pos, stamp, _cache->size())) {
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flushAll();
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}
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@ -351,6 +352,10 @@ public:
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if (key_pos) {
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_key_pos = key_pos;
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}
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if (flush) {
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flushAll();
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}
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}
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virtual void clearCache() {
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@ -369,6 +374,12 @@ private:
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_key_pos = false;
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}
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bool flushImmediatelyWhenCloseMerge() {
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//一般的协议关闭合并写时,立即刷新缓存,这样可以减少一帧的延时,但是rtp例外,请看相应的模板特例化函数
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GET_CONFIG(int, mergeWriteMS, General::kMergeWriteMS);
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return mergeWriteMS <= 0;
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}
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private:
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bool _key_pos = false;
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policy _policy;
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