diff options
| -rw-r--r-- | gst/aiff/aiffparse.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gst/aiff/aiffparse.c b/gst/aiff/aiffparse.c index 7ca19c6ea..5600a7eb8 100644 --- a/gst/aiff/aiffparse.c +++ b/gst/aiff/aiffparse.c @@ -816,11 +816,14 @@ too_small: } +#define _P(pos) (G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_ ##pos) + static GstCaps * gst_aiff_parse_create_caps (GstAiffParse * aiff) { GstCaps *caps = NULL; const gchar *format = NULL; + guint64 channel_mask; if (aiff->floating_point) { if (aiff->endianness == G_BIG_ENDIAN) { @@ -858,6 +861,44 @@ gst_aiff_parse_create_caps (GstAiffParse * aiff) "rate", G_TYPE_INT, aiff->rate, NULL); } + if (aiff->channels > 2) { + GST_FIXME_OBJECT (aiff, "using fallback channel layout for %d channels", + aiff->channels); + + /* based on AIFF-1.3.pdf */ + switch (aiff->channels) { + case 1: + channel_mask = 0; + break; + case 2: + channel_mask = _P (FRONT_LEFT) | _P (FRONT_RIGHT); + break; + case 3: + channel_mask = _P (FRONT_LEFT) | _P (FRONT_RIGHT) | _P (FRONT_CENTER); + break; + case 4: + /* lists both this and 'quad' but doesn't say how to distinguish the two */ + channel_mask = + _P (FRONT_LEFT) | _P (FRONT_RIGHT) | _P (REAR_LEFT) | + _P (REAR_RIGHT); + break; + case 6: + channel_mask = + _P (FRONT_LEFT) | _P (FRONT_LEFT_OF_CENTER) | _P (FRONT_CENTER) | + _P (FRONT_RIGHT) | _P (FRONT_RIGHT_OF_CENTER) | _P (LFE1); + break; + default: + channel_mask = gst_audio_channel_get_fallback_mask (aiff->channels); + break; + } + + + if (channel_mask != 0) { + gst_caps_set_simple (caps, "channel-mask", GST_TYPE_BITMASK, channel_mask, + NULL); + } + } + GST_DEBUG_OBJECT (aiff, "Created caps: %" GST_PTR_FORMAT, caps); return caps; @@ -1050,6 +1091,11 @@ gst_aiff_parse_stream_headers (GstAiffParse * aiff) } break; } + case GST_MAKE_FOURCC ('C', 'H', 'A', 'N'):{ + GST_FIXME_OBJECT (aiff, "Handle CHAN chunk with channel layouts"); + gst_aiff_parse_ignore_chunk (aiff, tag, size); + break; + } default: gst_aiff_parse_ignore_chunk (aiff, tag, size); } |