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audio-channels: allow partially valid channel_mask

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Since WAVEFORMATEXTENSIBLE allows to have more channels than
bits in the channel mask we should allow this, too, to avoid
loss of information.

https://bugzilla.gnome.org/show_bug.cgi?id=733405
This commit is contained in:
Peter G. Baum 2014-10-03 12:54:17 +02:00 committed by Sebastian Dröge
parent a0b25a570a
commit c734fbc139
1 changed files with 4 additions and 10 deletions
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14
gst-libs/gst/audio/audio-channels.c
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@ -301,6 +301,8 @@ gst_audio_channel_positions_to_mask (const GstAudioChannelPosition * position,
* (which should have at least @channels entries ensured by caller).
* If @channel_mask is set to 0, it is considered as 'not present' for purpose
* of conversion.
* A partially valid @channel_mask with less bits set than the number
* of channels is considered valid.
*
* Returns: %TRUE if channel and channel mask are valid and could be converted
*/
@ -331,14 +333,12 @@ gst_audio_channel_positions_from_mask (gint channels, guint64 channel_mask,
if ((channel_mask & (G_GUINT64_CONSTANT (1) << i))) {
if (j < channels)
position[j] = default_channel_order[i];
if (default_channel_order[i] == GST_AUDIO_CHANNEL_POSITION_INVALID)
goto invalid_channel_mask;
j++;
}
}
if (j != channels)
goto invalid_channel_mask;
GST_WARNING ("Only partially valid channel mask 0x%016" G_GINT64_MODIFIER
"x for %d channels", channel_mask, channels);
}
return TRUE;
@ -349,12 +349,6 @@ no_channel_mask:
GST_ERROR ("no channel-mask property given");
return FALSE;
}
invalid_channel_mask:
{
GST_ERROR ("Invalid channel mask 0x%016" G_GINT64_MODIFIER
"x for %d channels", channel_mask, channels);
return FALSE;
}
}