Merge remote-tracking branch 'qatar/master'

* qatar/master:
  h264: new assembly version of get_cabac for x86_64 with PIC
  h264: use one table instead of several for cabac functions
  h264: (trivial) remove unneeded macro argument in x86/cabac.h
  libschroedingerdec: check malloc
  segment: reorder seg_write_header allocation
  avio: make avio_close(NULL) a no-op
  mov: Parse EC3SpecificBox (dec3 atom).

Conflicts:
	libavcodec/cabac.c
	libavcodec/x86/cabac.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>

3 files changed, 40 insertions, 9 deletions

diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 2f57c55e5b..45a8bad37e 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -785,8 +785,12 @@ int avio_open2(AVIOContext **s, const char *filename, int flags,
 
 int avio_close(AVIOContext *s)
 {
-    URLContext *h = s->opaque;
+    URLContext *h;
+
+    if (!s)
+        return 0;
 
+    h = s->opaque;
     av_free(s->buffer);
     av_free(s);
     return ffurl_close(h);
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 2f48f2e7ec..5a0353107b 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -596,6 +596,34 @@ static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     return 0;
 }
 
+static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+    AVStream *st;
+    int eac3info, acmod, lfeon, bsmod;
+
+    if (c->fc->nb_streams < 1)
+        return 0;
+    st = c->fc->streams[c->fc->nb_streams-1];
+
+    /* No need to parse fields for additional independent substreams and its
+     * associated dependent substreams since libavcodec's E-AC-3 decoder
+     * does not support them yet. */
+    avio_rb16(pb); /* data_rate and num_ind_sub */
+    eac3info = avio_rb24(pb);
+    bsmod = (eac3info >> 12) & 0x1f;
+    acmod = (eac3info >>  9) & 0x7;
+    lfeon = (eac3info >>  8) & 0x1;
+    st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
+    if (lfeon)
+        st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
+    st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout);
+    st->codec->audio_service_type = bsmod;
+    if (st->codec->channels > 1 && bsmod == 0x7)
+        st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
+
+    return 0;
+}
+
 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 {
     AVStream *st;
@@ -2605,6 +2633,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
 { MKTAG('w','a','v','e'), mov_read_wave },
 { MKTAG('e','s','d','s'), mov_read_esds },
 { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */
+{ MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */
 { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
 { MKTAG('w','f','e','x'), mov_read_wfex },
 { MKTAG('c','m','o','v'), mov_read_cmov },
diff --git a/libavformat/segment.c b/libavformat/segment.c
index 05f76a72c5..09949d7aeb 100644
--- a/libavformat/segment.c
+++ b/libavformat/segment.c
@@ -113,10 +113,15 @@ static int seg_write_header(AVFormatContext *s)
     seg->offset_time = 0;
     seg->recording_time = seg->time * 1000000;
 
+    oc = avformat_alloc_context();
+
+    if (!oc)
+        return AVERROR(ENOMEM);
+
     if (seg->list)
         if ((ret = avio_open2(&seg->pb, seg->list, AVIO_FLAG_WRITE,
                               &s->interrupt_callback, NULL)) < 0)
-            return ret;
+            goto fail;
 
     for (i = 0; i< s->nb_streams; i++)
         seg->has_video +=
@@ -127,13 +132,6 @@ static int seg_write_header(AVFormatContext *s)
                "More than a single video stream present, "
                "expect issues decoding it.\n");
 
-    oc = avformat_alloc_context();
-
-    if (!oc) {
-        ret = AVERROR(ENOMEM);
-        goto fail;
-    }
-
     oc->oformat = av_guess_format(seg->format, s->filename, NULL);
 
     if (!oc->oformat) {