Support audio-only FFmpeg inputs. Somewhat wonky, though.

[nageru] / defs.h

diff --git a/defs.h b/defs.h
index aa577bb607af039e8136c9e609e6e9027a872ea5..7b8cc696de1120de66ce04a1b2d29138089d024c 100644 (file)
--- a/defs.h
+++ b/defs.h
@@ -1,24 +1,39 @@
 #ifndef _DEFS_H
 #define _DEFS_H
 
-#define OUTPUT_FREQUENCY 48000
+#include <libavformat/version.h>
+
+// This flag is only supported in FFmpeg 3.3 and up, and we only require 3.1.
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 71, 100)
+#define MUX_SKIP_TRAILER "+skip_trailer"
+#else
+#define MUX_SKIP_TRAILER ""
+#endif
+
+#define OUTPUT_FREQUENCY 48000  // Currently needs to be exactly 48000, since bmusb outputs in that.
 #define MAX_FPS 60
-#define WIDTH 1280
-#define HEIGHT 720
-#define MAX_CARDS 16
+#define FAKE_FPS 25  // Must be an integer.
+#define MAX_VIDEO_CARDS 16
+#define MAX_ALSA_CARDS 16
+#define MAX_BUSES 256  // Audio buses.
 
 // For deinterlacing. See also comments on InputState.
 #define FRAME_HISTORY_LENGTH 5
 
 #define AUDIO_OUTPUT_CODEC_NAME "pcm_s32le"
 #define DEFAULT_AUDIO_OUTPUT_BIT_RATE 0
+#define DEFAULT_X264_OUTPUT_BIT_RATE 4500  // 5 Mbit after making room for some audio and TCP overhead.
 
 #define LOCAL_DUMP_PREFIX "record-"
 #define LOCAL_DUMP_SUFFIX ".nut"
 #define DEFAULT_STREAM_MUX_NAME "nut"  // Only for HTTP. Local dump guesses from LOCAL_DUMP_SUFFIX.
+#define DEFAULT_HTTPD_PORT 9095
 #define MUX_OPTS { \
-       /* Make seekable .mov files. */ \
-       { "movflags", "empty_moov+frag_keyframe+default_base_moof" }, \
+       /* Make seekable .mov files, and keep MP4 muxer from using unlimited amounts of memory. */ \
+       { "movflags", "empty_moov+frag_keyframe+default_base_moof" MUX_SKIP_TRAILER }, \
+       \
+       /* Make for somewhat less bursty stream output when using .mov. */ \
+       { "frag_duration", "125000" }, \
        \
        /* Keep nut muxer from using unlimited amounts of memory. */ \
        { "write_index", "0" } \