feat: add avpipes

app/mosh-pipe.cpp

@@ -0,0 +1,32 @@
+
+#include "mosh-me/avpipe.hpp"
+#include <avcpp/av.h>
+#include <avcpp/codeccontext.h>
+#include <avcpp/formatcontext.h>
+#include <avcpp/stream.h>
+#include <spdlog/spdlog.h>
+
+int main(int argc, char *argv[]) {
+  if (argc < 3) {
+    spdlog::error("Please invoke with {} <ifile> <ofile>", argv[0]);
+  }
+
+  av::init();
+
+  try {
+    auto pipe = mosh_me::VideoMuxer::link(std::filesystem::path(argv[2]))
+                << mosh_me::DropIFrames::link()
+                << mosh_me::MoshableVideoEncoder::link()
+                << mosh_me::VideoDecoder::link()
+                << mosh_me::VideoPacketSource::link(argv[1]);
+
+    pipe.propagateMeta();
+
+    if (auto result = pipe.pull(); !result.has_value()) {
+      spdlog::error("Pipe failed");
+    }
+
+  } catch (const av::Exception &e) {
+    spdlog::error("{}", e.what());
+  }
+}