From 9851b98978d94e4f6d35969851658f58120c6863 Mon Sep 17 00:00:00 2001
From: Good Guy <good1.2guy@gmail.com>
Date: Wed, 4 May 2016 12:42:27 -0600
Subject: [PATCH] fix for ffmpeg seek pos 0, add pactl probe

---
 cinelerra-5.1/cinelerra/audioalsa.C |  2 ++
 cinelerra-5.1/cinelerra/ffmpeg.C    | 33 +++++++++++++----------------
 cinelerra-5.1/cinelerra/ffmpeg.h    |  8 ++++---
 cinelerra-5.1/configure             |  3 ++-
 cinelerra-5.1/global_config         |  1 +
 5 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/cinelerra-5.1/cinelerra/audioalsa.C b/cinelerra-5.1/cinelerra/audioalsa.C
index ee5b6530..166324d6 100644
--- a/cinelerra-5.1/cinelerra/audioalsa.C
+++ b/cinelerra-5.1/cinelerra/audioalsa.C
@@ -156,6 +156,7 @@ void AudioALSA::list_devices(ArrayList<char*> *devices, int pcm_title, int mode)
 		snd_ctl_close(handle);
 	}
 
+#ifdef HAVE_PACTL
 // attempt to add pulseaudio "monitor" devices
 //  run: pactl list <sources>|<sinks>
 //   scan output for <Source/Sink> #n,  Name: <device>
@@ -211,6 +212,7 @@ void AudioALSA::list_devices(ArrayList<char*> *devices, int pcm_title, int mode)
 		}
 		pclose(pactl);
 	}
+#endif
 }
 
 void AudioALSA::translate_name(char *output, char *input, int mode)
diff --git a/cinelerra-5.1/cinelerra/ffmpeg.C b/cinelerra-5.1/cinelerra/ffmpeg.C
index 51565786..74d1d745 100644
--- a/cinelerra-5.1/cinelerra/ffmpeg.C
+++ b/cinelerra-5.1/cinelerra/ffmpeg.C
@@ -47,21 +47,15 @@ static void ff_err(int ret, const char *fmt, ...)
 	fprintf(stderr,_("%s  err: %s\n"),msg, errmsg);
 }
 
-FFPacket::FFPacket()
-{
-	init();
-}
-
-FFPacket::~FFPacket()
-{
-	av_packet_unref(&pkt);
-}
-
 void FFPacket::init()
 {
 	av_init_packet(&pkt);
 	pkt.data = 0; pkt.size = 0;
 }
+void FFPacket::finit()
+{
+	av_packet_unref(&pkt);
+}
 
 FFrame::FFrame(FFStream *fst)
 {
@@ -449,7 +443,7 @@ int FFStream::flush()
 
 int FFStream::seek(int64_t no, double rate)
 {
-	if( no < 0 ) no = 0;
+	int64_t tstmp = -INT64_MAX+1;
 // default ffmpeg native seek
 	int npkts = 1;
 	int64_t pos = no, plmt = -1;
@@ -461,27 +455,30 @@ int FFStream::seek(int64_t no, double rate)
 		if( no-n < 30*rate ) {
 			if( n < 0 ) n = 0;
 			pos = n;
-			if( ++i < marks.size() ) plmt = marks[i].pos;
+			if( i < marks.size() ) plmt = marks[i].pos;
 			npkts = MAX_RETRY;
 		}
 	}
-	double secs = pos / rate;
-	int64_t pkt_ts, tstmp = secs * st->time_base.den / st->time_base.num;
-	if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
+	if( pos > 0 ) {
+		double secs = pos / rate;
+		tstmp = secs * st->time_base.den / st->time_base.num;
+		if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
+	}
 	int ret = avformat_seek_file(fmt_ctx, st->index,
 		-INT64_MAX, tstmp, INT64_MAX, AVSEEK_FLAG_ANY);
 	if( ret >= 0 ) {
 		avcodec_flush_buffers(st->codec);
+		ipkt.finit();  ipkt.init();
 		need_packet = 0;  flushed = 0;
 		seeked = 1;  st_eof(0);
 // read up to retry packets, limited to npkts in stream, and not past pkt.pos plmt
-		for( int retry=MAX_RETRY; ret>=0 && --retry>=0; ) {
+		for(;;) {
 			if( read_packet() <= 0 ) { ret = -1;  break; }
 			if( plmt >= 0 && ipkt->pos >= plmt ) break;
 			if( ipkt->stream_index != st->index ) continue;
 			if( --npkts <= 0 ) break;
-			if( (pkt_ts=ipkt->dts) == AV_NOPTS_VALUE &&
-			    (pkt_ts=ipkt->pts) == AV_NOPTS_VALUE ) continue;
+			int64_t pkt_ts = ipkt->dts != AV_NOPTS_VALUE ? ipkt->dts : ipkt->pts;
+			if( pkt_ts == AV_NOPTS_VALUE ) continue;
 			if( pkt_ts >= tstmp ) break;
 		}
 	}
diff --git a/cinelerra-5.1/cinelerra/ffmpeg.h b/cinelerra-5.1/cinelerra/ffmpeg.h
index 4860c002..674e2703 100644
--- a/cinelerra-5.1/cinelerra/ffmpeg.h
+++ b/cinelerra-5.1/cinelerra/ffmpeg.h
@@ -40,12 +40,14 @@ extern "C" {
 class FFPacket  {
 	AVPacket pkt;
 public:
-	FFPacket();
-	~FFPacket();
-	void init();
 	operator AVPacket*() { return &pkt; }
 	operator AVPacket&() { return pkt; }
 	AVPacket *operator ->() { return &pkt; }
+
+	void init();
+	void finit();
+	FFPacket() { init(); }
+	~FFPacket() { finit(); }
 };
 
 class FFrame : public ListItem<FFrame> {
diff --git a/cinelerra-5.1/configure b/cinelerra-5.1/configure
index 02e4c514..06bbc566 100755
--- a/cinelerra-5.1/configure
+++ b/cinelerra-5.1/configure
@@ -6,7 +6,7 @@
 #edit global_config and set HAVE_var to override probe
 
 PROBED="STATIC_LIBRARIES HAVE_VIDEO4LINUX2 HAVE_DVB HAVE_GL"
-PROBED="$PROBED HAVE_DL HAVE_NUMA"
+PROBED="$PROBED HAVE_DL HAVE_NUMA HAVE_PACTL"
 
 if [ $# -gt 0 ]; then
   if [ "$1" = "reset" ]; then
@@ -169,6 +169,7 @@ if [ -x a.out ]; then HAVE_NUMA=y; else HAVE_NUMA=n; fi
 
 rm -f a.out conftest.c
 
+if pactl --version >& /dev/null; then HAVE_PACTL=y; else HAVE_PACTL=n; fi
 
 # update global_config with probe data
 
diff --git a/cinelerra-5.1/global_config b/cinelerra-5.1/global_config
index 43126b32..e25ee315 100644
--- a/cinelerra-5.1/global_config
+++ b/cinelerra-5.1/global_config
@@ -18,6 +18,7 @@ HAVE_LADSPA := y
 #HAVE_GL := y
 #HAVE_DL := y
 #HAVE_NUMA := y
+#HAVE_PACTL := y
 
 OBJDIR := $(shell uname -m)
 
-- 
2.26.2