When doing a cut, do the shutdown in a separate thread.

[nageru] / mux.cpp

diff --git a/mux.cpp b/mux.cpp
index e16943828fcccaa8f9d5e65ad9008cc9bb1456dd..b9860b943c402f08f8263de63ccd40aca3719c3b 100644 (file)
--- a/mux.cpp
+++ b/mux.cpp
@@ -1,5 +1,6 @@
 #include <assert.h>
 
+#include <algorithm>
 #include <mutex>
 #include <string>
 #include <vector>
@@ -107,8 +108,10 @@ void Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
        }
 
        {
-               lock_guard<mutex> lock(ctx_mu);
-               if (av_interleaved_write_frame(avctx, &pkt_copy) < 0) {
+               lock_guard<mutex> lock(mu);
+               if (plug_count > 0) {
+                       plugged_packets.push_back(av_packet_clone(&pkt_copy));
+               } else if (av_interleaved_write_frame(avctx, &pkt_copy) < 0) {
                        fprintf(stderr, "av_interleaved_write_frame() failed\n");
                        exit(1);
                }
@@ -116,3 +119,37 @@ void Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
 
        av_packet_unref(&pkt_copy);
 }
+
+void Mux::plug()
+{
+       lock_guard<mutex> lock(mu);
+       ++plug_count;
+}
+
+void Mux::unplug()
+{
+       lock_guard<mutex> lock(mu);
+       if (--plug_count > 0) {
+               return;
+       }
+       assert(plug_count >= 0);
+
+       sort(plugged_packets.begin(), plugged_packets.end(), [](const AVPacket *a, const AVPacket *b) {
+               int64_t a_dts = (a->dts == AV_NOPTS_VALUE ? a->pts : a->dts);
+               int64_t b_dts = (b->dts == AV_NOPTS_VALUE ? b->pts : b->dts);
+               if (a_dts != b_dts) {
+                       return a_dts < b_dts;
+               } else {
+                       return a->pts < b->pts;
+               }
+       });
+
+       for (AVPacket *pkt : plugged_packets) {
+               if (av_interleaved_write_frame(avctx, pkt) < 0) {
+                       fprintf(stderr, "av_interleaved_write_frame() failed\n");
+                       exit(1);
+               }
+               av_packet_free(&pkt);
+       }
+       plugged_packets.clear();
+}