#ifndef _HTTPD_H
#define _HTTPD_H
+// A class dealing with stream output to HTTP.
+
#include <microhttpd.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <condition_variable>
#include <deque>
-#include <string>
+#include <memory>
#include <mutex>
-#include <condition_variable>
-#include <vector>
+#include <set>
+#include <string>
-extern "C" {
-#include <libavformat/avformat.h>
-}
+struct MHD_Connection;
+struct MHD_Daemon;
class HTTPD {
public:
HTTPD();
+ ~HTTPD();
+
+ // Should be called before start().
+ void set_header(const std::string &data) {
+ header = data;
+ }
+
void start(int port);
- void add_packet(const AVPacket &pkt);
+ void add_data(const char *buf, size_t size, bool keyframe);
private:
static int answer_to_connection_thunk(void *cls, MHD_Connection *connection,
static void free_stream(void *cls);
+
class Stream {
public:
- Stream(AVOutputFormat *oformat);
- ~Stream();
+ enum Framing {
+ FRAMING_RAW,
+ FRAMING_METACUBE
+ };
+ Stream(HTTPD *parent, Framing framing) : parent(parent), framing(framing) {}
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);
+ enum DataType {
+ DATA_TYPE_HEADER,
+ DATA_TYPE_KEYFRAME,
+ DATA_TYPE_OTHER
+ };
+ void add_data(const char *buf, size_t size, DataType data_type);
+ void stop();
+ HTTPD *get_parent() const { return parent; }
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;
+ HTTPD *parent;
+ Framing framing;
std::mutex buffer_mutex;
+ bool should_quit = false; // Under <buffer_mutex>.
std::condition_variable has_buffered_data;
- std::deque<std::string> buffered_data; // Protected by <mutex>.
+ std::deque<std::string> buffered_data; // Protected by <buffer_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>.
+ size_t seen_keyframe = false;
};
- std::vector<Stream *> streams; // Not owned.
+ MHD_Daemon *mhd = nullptr;
+ std::mutex streams_mutex;
+ std::set<Stream *> streams; // Not owned.
+ std::string header;
};
#endif // !defined(_HTTPD_H)