[FFmpeg-cvslog] avcodec/adpcmenc: Round up required buffer size

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Thu Sep 15 17:42:25 2022 +0200| [bffc8f9af1f8e760a63cbc3680ad814b3c1b99ec] | committer: Andreas Rheinhardt

avcodec/adpcmenc: Round up required buffer size

Otherwise the buffer might be too small. Fixes assert violations
when encoding mono audio with exactly one sample.

Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bffc8f9af1f8e760a63cbc3680ad814b3c1b99ec
---

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

diff --git a/libavcodec/adpcmenc.c b/libavcodec/adpcmenc.c
index 1ffc5b410f..57709b19a1 100644
--- a/libavcodec/adpcmenc.c
+++ b/libavcodec/adpcmenc.c
@@ -614,7 +614,7 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
         avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_ALP ||
         avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_APM ||
         avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_WS)
-        pkt_size = (frame->nb_samples * channels) / 2;
+        pkt_size = (frame->nb_samples * channels + 1) / 2;
     else
         pkt_size = avctx->block_align;
     if ((ret = ff_get_encode_buffer(avctx, avpkt, pkt_size, 0)) < 0)