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audio: expose API to convert channel array to a mask

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This commit is contained in:
Wim Taymans 2012-01-05 13:59:32 +01:00
parent f8ae2a0d5b
commit dd43d0697e
2 changed files with 20 additions and 0 deletions
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17
gst-libs/gst/audio/audio.c
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@ -1084,6 +1084,23 @@ gst_audio_check_valid_channel_positions (const GstAudioChannelPosition *
return check_valid_channel_positions (position, channels, force_order, NULL);
}
/**
* gst_audio_channel_positions_to_mask:
* @position: The %GstAudioChannelPositions
* @channels: The number of channels.
* @channel_mask: the output channel mask
*
* Convert the @position array of @channels channels to a bitmask.
*
* Returns: %TRUE if the channel positions are valid and could be converted.
*/
gboolean
gst_audio_channel_positions_to_mask (const GstAudioChannelPosition * position,
gint channels, guint64 * channel_mask)
{
return check_valid_channel_positions (position, channels, TRUE, channel_mask);
}
/**
* gst_audio_get_channel_reorder_map:
* @channels: The number of channels.

3
gst-libs/gst/audio/audio.h
View file

@ -553,6 +553,9 @@ gboolean gst_audio_channel_positions_to_valid_order (GstAudioChannelPositi
gboolean gst_audio_check_valid_channel_positions (const GstAudioChannelPosition *position,
gint channels, gboolean force_order);
gboolean gst_audio_channel_positions_to_mask (const GstAudioChannelPosition *position,
gint channels, guint64 *channel_mask);
gboolean gst_audio_get_channel_reorder_map (gint channels,
const GstAudioChannelPosition * from,
const GstAudioChannelPosition * to,