Add a HTTP server for stream output.

[nageru] / httpd.h

diff --git a/httpd.h b/httpd.h
new file mode 100644 (file)
index 0000000..0a092aa
--- /dev/null
+++ b/httpd.h
@@ -0,0 +1,61 @@
+#ifndef _HTTPD_H
+#define _HTTPD_H
+
+#include <microhttpd.h>
+#include <deque>
+#include <string>
+#include <mutex>
+#include <condition_variable>
+#include <vector>
+
+extern "C" {
+#include <libavformat/avformat.h>
+}
+
+class HTTPD {
+public:
+       HTTPD();
+       void start(int port);
+       void add_packet(const AVPacket &pkt);
+
+private:
+       static int answer_to_connection_thunk(void *cls, MHD_Connection *connection,
+                                             const char *url, const char *method,
+                                             const char *version, const char *upload_data,
+                                             size_t *upload_data_size, void **con_cls);
+
+       int answer_to_connection(MHD_Connection *connection,
+                                const char *url, const char *method,
+                                const char *version, const char *upload_data,
+                                size_t *upload_data_size, void **con_cls);
+
+       static void free_stream(void *cls);
+
+       class Stream {
+       public:
+               Stream(AVOutputFormat *oformat);
+               ~Stream();
+
+               static ssize_t reader_callback_thunk(void *cls, uint64_t pos, char *buf, size_t max);
+               ssize_t reader_callback(uint64_t pos, char *buf, size_t max);
+
+               void add_packet(const AVPacket &pkt);
+
+       private:
+               static int write_packet_thunk(void *opaque, uint8_t *buf, int buf_size);
+               int write_packet(uint8_t *buf, int buf_size);
+
+               AVIOContext *avio;
+               AVFormatContext *avctx;
+               AVStream *avstream_video, *avstream_audio;
+
+               std::mutex buffer_mutex;
+               std::condition_variable has_buffered_data;
+               std::deque<std::string> buffered_data;  // Protected by <mutex>.
+               size_t used_of_buffered_data = 0;  // How many bytes of the first element of <buffered_data> that is already used. Protected by <mutex>.
+       };
+
+       std::vector<Stream *> streams;  // Not owned.
+};
+
+#endif  // !defined(_HTTPD_H)