Separate muxing entirely out of the HTTPD class.

[nageru] / mux.cpp

diff --git a/mux.cpp b/mux.cpp
index addd24c7c8c739ced966f5ad51dba0b6d98c7fca..eff336f5799d01706fd7f9c4a2a0fc99356303f6 100644 (file)
--- a/mux.cpp
+++ b/mux.cpp
@@ -9,8 +9,8 @@
 
 using namespace std;
 
-Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const AVCodec *codec_audio, int time_base, int bit_rate)
-       : avctx(avctx)
+Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const AVCodec *codec_audio, int time_base, int bit_rate, KeyFrameSignalReceiver *keyframe_signal_receiver)
+       : avctx(avctx), keyframe_signal_receiver(keyframe_signal_receiver)
 {
        AVCodec *codec_video = avcodec_find_encoder((video_codec == CODEC_H264) ? AV_CODEC_ID_H264 : AV_CODEC_ID_RAWVIDEO);
        avstream_video = avformat_new_stream(avctx, codec_video);
@@ -70,6 +70,9 @@ Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const
                fprintf(stderr, "avformat_write_header() failed\n");
                exit(1);
        }
+
+       // Make sure the header is written before the constructor exits.
+       avio_flush(avctx->pb);
 }
 
 Mux::~Mux()
@@ -82,12 +85,6 @@ Mux::~Mux()
 
 void Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
 {
-       if (!seen_keyframe && !(pkt.stream_index == 0 && (pkt.flags & AV_PKT_FLAG_KEY))) {
-               // Wait until we see the first (video) key frame.
-               return;
-       }
-       seen_keyframe = true;
-
        AVPacket pkt_copy;
        av_copy_packet(&pkt_copy, &pkt);
        if (pkt.stream_index == 0) {
@@ -100,6 +97,15 @@ void Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
                assert(false);
        }
 
+       if (keyframe_signal_receiver) {
+               if (pkt.flags & AV_PKT_FLAG_KEY) {
+                       if (avctx->oformat->flags & AVFMT_ALLOW_FLUSH) {
+                               av_write_frame(avctx, nullptr);
+                       }
+                       keyframe_signal_receiver->signal_keyframe();
+               }
+       }
+
        if (av_interleaved_write_frame(avctx, &pkt_copy) < 0) {
                fprintf(stderr, "av_interleaved_write_frame() failed\n");
                exit(1);
@@ -107,4 +113,3 @@ void Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
 
        av_packet_unref(&pkt_copy);
 }
-