shithub: rtmp

ref: a73d1bc55bf8d60f5cdd23c0f99080024a4c5f72
dir: /main.c/

#include <u.h>
#include <libc.h>
#include <thread.h>
#include <bio.h>
#include "adts.h"
#include "ivf.h"
#include "rtmp.h"
#include "util.h"

typedef struct Conn Conn;

struct Conn {
	char *url;
	RTMP *r;
	ulong sid;
};

int mainstacksize = 65536;
int debug = 0;

static Conn *cs;
static int ncs;
static uvlong ns₀, vms;
static vlong aoff;

static uvlong
ns2ms(uvlong z, uvlong ns)
{
	if(z != 0 && z != Zns₀)
		ns = z - ns₀ + ns;

	return ns / 1000000ULL;
}

static void
audio(void *aux)
{
	ADTSFrame af;
	Biobuf *a;
	u64int ms;
	Conn *c;
	int i;

	a = aux;
	memset(&af, 0, sizeof(af));
	af.ns₀ = Zns₀;
	for(;;){
		if(adtsread(a, &af) != 0)
			sysfatal("%r");
		if(af.sz == 0) /* eof */
			break;
		ms = ns2ms(af.ns₀, af.ns);
		if((vlong)ms+aoff >= 0)
			ms += aoff;

		for(c = cs, i = 0; i < ncs; i++, c++){
			if(rtmpdata(c->r, c->sid, ms, Taudio, af.buf, af.sz) != 0){
				fprint(2, "%s: %r\n", c->url);
				goto out;
			}
		}

		/* protect against overruns */
		if(vms+200 < ms)
			sleep(100);
	}

	/* FIXME properly close RTMP connection */
out:
	threadexitsall(nil);
}

static void
usage(void)
{
	fprint(2, "usage: %s [-A AUDIOOFF] [-a AUDIO] URL [URL...]\n", argv0);
	threadexitsall("usage");
}

void
threadmain(int argc, char **argv)
{
	Biobuf *a, v;
	IVFrame vf;
	u64int ms;
	IVF ivf;
	Conn *c;
	int i;

	a = nil;
	ARGBEGIN{
	case 'd':
		debug++;
		break;
	case 'a':
		if((a = Bopen(EARGF(usage()), OREAD)) == nil)
			sysfatal("%r");
		break;
	case 'A':
		aoff = atoll(EARGF(usage()));
		break;
	default:
		usage();
	}ARGEND

	ncs = argc;
	if(ncs < 1)
		usage();
	ns₀ = nsec() - 10ULL*1000000000ULL; /* base, -10s */
	srand(time(nil));

	if(Binit(&v, 0, OREAD) != 0 || ivfopen(&v, &ivf) != 0)
		sysfatal("%r");
	if(strcmp(ivf.type, "AVC1") != 0)
		sysfatal("not H.264");

	cs = ecalloc(argc, sizeof(*cs));
	for(c = cs, i = 0; i < ncs; i++, c++){
		c->url = "rtmp://REDACTED";//FIXME the key has to be redacted argv[i];

		if((c->r = rtmpdial(argv[i])) == nil)
			sysfatal("%r");

		if(rtmpstream(c->r, &c->sid) != 0 ||
		   rtmppublish(c->r, c->sid, PubLive, nil) != 0 ||
		   rtmpmeta(c->r, c->sid, VcodecH264, ivf.w, ivf.h, a != nil ? AcodecAAC : -1) != 0){
			sysfatal("%r");
		}
	}

	if(a != nil)
		proccreate(audio, a, mainstacksize);

	memset(&vf, 0, sizeof(vf));
	for(;;){
		if(ivfread(&ivf, &vf) != 0)
			sysfatal("%r");
		if(vf.sz == 0)
			break;
		ms = ns2ms(ivf.ns₀, vf.ns);
		vms = ms;
		for(c = cs, i = 0; i < ncs; i++, c++){
			if(rtmpdata(c->r, c->sid, ms, Tvideo, vf.buf, vf.sz) != 0){
				fprint(2, "%s: %r\n", c->url);
				goto out;
			}
		}
	}

	/* FIXME properly close RTMP connection */
out:
	threadexitsall(nil);
}