Merge commit '47e547b321338c73c21fa623789f1efbd80a297a'

[ffmpeg] / libavcodec / opus_rc.h

diff --git a/libavcodec/opus_rc.h b/libavcodec/opus_rc.h
index 821eeadd6ed5aef5fd9e9adf0509daeb70871db1..627f83229ed2eb7be35d7238e06a295e20a2cd8e 100644 (file)
--- a/libavcodec/opus_rc.h
+++ b/libavcodec/opus_rc.h
@@ -109,4 +109,18 @@ void     ff_opus_rc_dec_raw_init(OpusRangeCoder *rc, const uint8_t *rightend, ui
 void     ff_opus_rc_enc_end(OpusRangeCoder *rc, uint8_t *dst, int size);
 void     ff_opus_rc_enc_init(OpusRangeCoder *rc);
 
+#define OPUS_RC_CHECKPOINT_UPDATE(rc) \
+    rc_rollback_bits = opus_rc_tell_frac(rc); \
+    rc_rollback_ctx  = *rc
+
+#define OPUS_RC_CHECKPOINT_SPAWN(rc) \
+    uint32_t rc_rollback_bits = opus_rc_tell_frac(rc); \
+    OpusRangeCoder rc_rollback_ctx = *rc \
+
+#define OPUS_RC_CHECKPOINT_BITS(rc) \
+    (opus_rc_tell_frac(rc) - rc_rollback_bits)
+
+#define OPUS_RC_CHECKPOINT_ROLLBACK(rc) \
+    memcpy(rc, &rc_rollback_ctx, sizeof(OpusRangeCoder)); \
+
 #endif /* AVCODEC_OPUS_RC_H */