[FFmpeg-cvslog] avcodec/on2avc: use the matching AVTX context for the 512 sized iMDCT

[Marton Balint]

ffmpeg | branch: release/6.0 | Marton Balint <cus at passwd.hu> | Sat Aug  5 10:21:24 2023 +0200| [d2efb800274df0be3ab9ac9c2c4fc61c58e329bb] | committer: Marton Balint

avcodec/on2avc: use the matching AVTX context for the 512 sized iMDCT

Improves the audio corruption regression caused by
6ba0aa1770ba29eb4126c6a706f6b0cd3809648f reported in ticket #10029.

There is still however a noticable audio glitch, so the FFT conversion to AVTX
probably also needs some modifications.

Signed-off-by: Marton Balint <cus at passwd.hu>
(cherry picked from commit f296c765905ca110a05d77a7e919d992800d2e11)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d2efb800274df0be3ab9ac9c2c4fc61c58e329bb
---

 libavcodec/on2avc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/on2avc.c b/libavcodec/on2avc.c
index 74be1dcb60..474adb149d 100644
--- a/libavcodec/on2avc.c
+++ b/libavcodec/on2avc.c
@@ -700,7 +700,7 @@ static int on2avc_reconstruct_channel_ext(On2AVCContext *c, AVFrame *dst, int of
             break;
         case WINDOW_TYPE_EXT5:
             c->wtf(c, buf, in, 512);
-            c->mdct_half_fn(c->mdct, buf + 512, in + 512, sizeof(float));
+            c->mdct_half_fn(c->mdct_half, buf + 512, in + 512, sizeof(float));
             for (i = 0; i < 256; i++) {
                 FFSWAP(float, buf[i + 512], buf[1023 - i]);
             }