Fix incorrect increment in sgidec.c

[ffmpeg] / libavcodec / aacsbr.c

diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
index a2138271323abf49645fd64b2100440c7ce18ebb..d2f37c5e10cb38225ddd04addebb815129f93e77 100644 (file)
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@@ -1187,7 +1187,7 @@ static void sbr_qmf_synthesis(DSPContext *dsp, FFTContext *mdct,
     const float *sbr_qmf_window = div ? sbr_qmf_window_ds : sbr_qmf_window_us;
     float *v;
     for (i = 0; i < 32; i++) {
-        if (*v_off == 0) {
+        if (*v_off < 128 >> div) {
             int saved_samples = (1280 - 128) >> div;
             memcpy(&v0[SBR_SYNTHESIS_BUF_SIZE - saved_samples], v0, saved_samples * sizeof(float));
             *v_off = SBR_SYNTHESIS_BUF_SIZE - saved_samples - (128 >> div);