Implements basic surround masking
The idea is that the rate of each stream is adjusted based on its
contribution to the total energy of a stereo downmix.
diff --git a/celt/celt.h b/celt/celt.h
index a8f7cb0..ea8c2f9 100644
--- a/celt/celt.h
+++ b/celt/celt.h
@@ -110,6 +110,12 @@
#define OPUS_SET_LFE_REQUEST 10024
#define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x)
+#define OPUS_SET_ENERGY_SAVE_REQUEST 10026
+#define OPUS_SET_ENERGY_SAVE(x) OPUS_SET_ENERGY_SAVE_REQUEST, __opus_check_val16_ptr(x)
+
+#define OPUS_SET_ENERGY_MASK_REQUEST 10028
+#define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
+
/* Encoder stuff */
int celt_encoder_get_size(int channels);