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qtdemux: add support for LPCM fourcc (uncompressed audio in Quicktime7)

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=663458
This commit is contained in:
Youness Alaoui 2013-01-08 20:45:21 -05:00 committed by Tim-Philipp Müller
parent 69b814546a
commit a76524ea08
1 changed files with 56 additions and 0 deletions
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56
gst/isomp4/qtdemux.c
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@ -9848,6 +9848,62 @@ qtdemux_audio_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
_codec ("WMA");
caps = gst_caps_new_empty_simple ("audio/x-wma");
break;
case GST_MAKE_FOURCC ('l', 'p', 'c', 'm'):
{
guint32 flags = 0;
guint32 depth = 0;
guint32 width = 0;
GstAudioFormat format;
enum
{
FLAG_IS_FLOAT = 0x1,
FLAG_IS_BIG_ENDIAN = 0x2,
FLAG_IS_SIGNED = 0x4,
FLAG_IS_PACKED = 0x8,
FLAG_IS_ALIGNED_HIGH = 0x10,
FLAG_IS_NON_INTERLEAVED = 0x20
};
_codec ("Raw LPCM audio");
if (data && len >= 56) {
depth = QT_UINT32 (data + 40);
flags = QT_UINT32 (data + 44);
width = QT_UINT32 (data + 48) * 8 / stream->n_channels;
}
if ((flags & FLAG_IS_FLOAT) == 0) {
if (depth == 0)
depth = 16;
if (width == 0)
width = 16;
format = gst_audio_format_build_integer ((flags & FLAG_IS_SIGNED) ?
TRUE : FALSE, (flags & FLAG_IS_BIG_ENDIAN) ?
G_BIG_ENDIAN : G_LITTLE_ENDIAN, width, depth);
// FIXME: check FLAG_IS_NON_INTERLEAVED flag for layout
caps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, gst_audio_format_to_string (format),
"layout", G_TYPE_STRING, "interleaved", NULL);
} else {
if (depth == 0)
depth = 32;
if (width == 0)
width = 32;
if (width == 64) {
if (flags & FLAG_IS_BIG_ENDIAN)
format = GST_AUDIO_FORMAT_F64BE;
else
format = GST_AUDIO_FORMAT_F64LE;
} else {
if (flags & FLAG_IS_BIG_ENDIAN)
format = GST_AUDIO_FORMAT_F32BE;
else
format = GST_AUDIO_FORMAT_F32LE;
}
caps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, gst_audio_format_to_string (format),
"layout", G_TYPE_STRING, "interleaved", NULL);
}
break;
}
case GST_MAKE_FOURCC ('q', 't', 'v', 'r'):
/* ? */
default: