private void buttonSetEnvelope_Click(object sender, EventArgs e)
{
if (_currentTrack.Channel != 0)
{
BASS_MIXER_NODE[] nodes =
{
new BASS_MIXER_NODE(Bass.BASS_ChannelSeconds2Bytes(_mixer, 10d), 1f),
new BASS_MIXER_NODE(Bass.BASS_ChannelSeconds2Bytes(_mixer, 13d), 0f),
new BASS_MIXER_NODE(Bass.BASS_ChannelSeconds2Bytes(_mixer, 17d), 0f),
new BASS_MIXER_NODE(Bass.BASS_ChannelSeconds2Bytes(_mixer, 20d), 1f)
};
BassMix.BASS_Mixer_ChannelSetEnvelope(_currentTrack.Channel, BASSMIXEnvelope.BASS_MIXER_ENV_VOL, nodes);
// already align the envelope position to the current playback position
// pause mixer
Bass.BASS_ChannelLock(_mixer, true);
long pos = BassMix.BASS_Mixer_ChannelGetPosition(_currentTrack.Channel);
// convert source pos to mixer pos
long envPos = Bass.BASS_ChannelSeconds2Bytes(_mixer, Bass.BASS_ChannelBytes2Seconds(_currentTrack.Channel, pos));
BassMix.BASS_Mixer_ChannelSetEnvelopePos(_currentTrack.Channel, BASSMIXEnvelope.BASS_MIXER_ENV_VOL, envPos);
// resume mixer
Bass.BASS_ChannelLock(_mixer, false);
// and show it in our waveform
_WF.DrawVolume = WaveForm.VOLUMEDRAWTYPE.Solid;
foreach (BASS_MIXER_NODE node in nodes)
{
_WF.AddVolumePoint(node.pos, node.val);
}
DrawWave();
}
}
private void SetEnvelopePos(int source, long newPos)
{
// pause mixer
Bass.BASS_ChannelLock(_mixer, true);
BassMix.BASS_Mixer_ChannelSetPosition(source, newPos);
// convert source pos to mixer pos
long envPos = Bass.BASS_ChannelSeconds2Bytes(_mixer, Bass.BASS_ChannelBytes2Seconds(source, newPos));
BassMix.BASS_Mixer_ChannelSetEnvelopePos(source, BASSMIXEnvelope.BASS_MIXER_ENV_VOL, envPos);
// resume mixer
Bass.BASS_ChannelLock(_mixer, false);
}
