From 30952face42de011d6805586b817184c4e90e7a6 Mon Sep 17 00:00:00 2001
From: Johns <johns98@gmx.net>
Date: Wed, 24 Oct 2012 15:38:09 +0200
Subject: [PATCH] Fix bug #1089: vdpau wrong number of mpeg refs.

---
 ChangeLog   |  1 +
 codec.c     | 24 ++++++++++++++++++++++--
 softhddev.c |  4 ++--
 video.c     |  6 +++---
 4 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index eec4301..abc76b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 User johns
 Date:
 
+    Fix bug #1089: Vdpau decoder used wrong number of mpeg reference frames.
     Fix bug: with some streams endless loop in pes audio parser.
     Report correct video size in cSoftHdDevice::GetVideoSize.
     Add picture adjustment support for vdpau.
diff --git a/codec.c b/codec.c
index 38702b3..7ba9676 100644
--- a/codec.c
+++ b/codec.c
@@ -385,6 +385,17 @@ void CodecVideoOpen(VideoDecoder * decoder, const char *name, int codec_id)
 	Fatal(_("codec: can't open video codec!\n"));
     }
 #else
+    if (video_codec->capabilities & (CODEC_CAP_HWACCEL_VDPAU |
+	    CODEC_CAP_HWACCEL)) {
+	Debug(3, "codec: video mpeg hack active\n");
+	// HACK around badly placed checks in mpeg_mc_decode_init
+	// taken from mplayer vd_ffmpeg.c
+	decoder->VideoCtx->slice_flags =
+	    SLICE_FLAG_CODED_ORDER | SLICE_FLAG_ALLOW_FIELD;
+	decoder->VideoCtx->thread_count = 1;
+	decoder->VideoCtx->active_thread_type = 0;
+    }
+
     if (avcodec_open2(decoder->VideoCtx, video_codec, NULL) < 0) {
 	pthread_mutex_unlock(&CodecLockMutex);
 	Fatal(_("codec: can't open video codec!\n"));
@@ -402,7 +413,7 @@ void CodecVideoOpen(VideoDecoder * decoder, const char *name, int codec_id)
     }
     if (video_codec->capabilities & CODEC_CAP_TRUNCATED) {
 	Debug(3, "codec: video can use truncated packets\n");
-	// we do not send complete frames
+	// we send incomplete frames, for old PES recordings
 	decoder->VideoCtx->flags |= CODEC_FLAG_TRUNCATED;
     }
     // FIXME: own memory management for video frames.
@@ -538,6 +549,11 @@ void CodecVideoDecode(VideoDecoder * decoder, const AVPacket * avpkt)
     Debug(4, "%s: %p %d -> %d %d\n", __FUNCTION__, pkt->data, pkt->size, used,
 	got_frame);
 
+    if (used < 0) {
+	Debug(3, "codec: bad video frame\n");
+	return;
+    }
+
     if (got_frame) {			// frame completed
 	//DisplayPts(video_ctx, frame);
 	VideoRenderFrame(decoder->HwDecoder, video_ctx, frame);
@@ -548,6 +564,9 @@ void CodecVideoDecode(VideoDecoder * decoder, const AVPacket * avpkt)
 	Debug(4, "codec: %8d incomplete interlaced frame %d bytes used\n",
 	    video_ctx->frame_number, used);
     }
+
+#if 1
+    // old code to support truncated or multi frame packets
     if (used != pkt->size) {
 	// ffmpeg 0.8.7 dislikes our seq_end_h264 and enters endless loop here
 	if (used == 0 && pkt->size == 5 && pkt->data[4] == 0x0A) {
@@ -561,10 +580,11 @@ void CodecVideoDecode(VideoDecoder * decoder, const AVPacket * avpkt)
 		used, pkt->size);
 	    pkt->size -= used;
 	    pkt->data += used;
+	    // FIXME: align problem?
 	    goto next_part;
 	}
-	Debug(3, "codec: bad frame %d\n", used);
     }
+#endif
 }
 
 /**
diff --git a/softhddev.c b/softhddev.c
index 5b48fa8..09e9f51 100644
--- a/softhddev.c
+++ b/softhddev.c
@@ -1236,7 +1236,7 @@ void SetVolumeDevice(int volume)
 #ifdef DEBUG
 uint32_t VideoSwitch;			///< debug video switch ticks
 #endif
-//#define STILL_DEBUG 1
+//#define STILL_DEBUG 2
 #ifdef STILL_DEBUG
 static char InStillPicture;		///< flag still picture
 #endif
@@ -1406,7 +1406,7 @@ static void VideoNextPacket(int codec_id)
 /**
 **	Fix packet for FFMpeg.
 **
-**	Some tv-stations sends mulitple pictures in a singe PES packet.
+**	Some tv-stations sends mulitple pictures in a single PES packet.
 **	Current ffmpeg 0.10 and libav-0.8 has problems with this.
 **	Split the packet into single picture packets.
 */
diff --git a/video.c b/video.c
index 6635daa..55808af 100644
--- a/video.c
+++ b/video.c
@@ -261,7 +261,7 @@ typedef struct _video_module_
 
 #define CODEC_SURFACES_MAX	31	///< maximal of surfaces
 
-#define CODEC_SURFACES_DEFAULT	(21+4)	///< default of surfaces
+#define CODEC_SURFACES_DEFAULT	21	///< default of surfaces
 // FIXME: video-xvba only supports 14
 #define xCODEC_SURFACES_DEFAULT	14	///< default of surfaces
 
@@ -6677,11 +6677,11 @@ static enum PixelFormat Vdpau_get_format(VdpauDecoder * decoder,
     // check profile
     switch (video_ctx->codec_id) {
 	case CODEC_ID_MPEG1VIDEO:
-	    max_refs = 2;
+	    max_refs = CODEC_SURFACES_MPEG2;
 	    profile = VdpauCheckProfile(decoder, VDP_DECODER_PROFILE_MPEG1);
 	    break;
 	case CODEC_ID_MPEG2VIDEO:
-	    max_refs = 2;
+	    max_refs = CODEC_SURFACES_MPEG2;
 	    profile =
 		VdpauCheckProfile(decoder, VDP_DECODER_PROFILE_MPEG2_MAIN);
 	    break;