[FFmpeg-devel] [PATCH 2/3] avcodec/pcm-dvdenc: Fix encoding 24bit samples

Andreas Rheinhardt andreas.rheinhardt at outlook.com
Sun Jul 10 16:45:56 EEST 2022


The earlier code ignored the lower 16 bits and instead used
the highest 8 bits twice.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavcodec/pcm-dvdenc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/libavcodec/pcm-dvdenc.c b/libavcodec/pcm-dvdenc.c
index c7f1d46ba3..0881697c17 100644
--- a/libavcodec/pcm-dvdenc.c
+++ b/libavcodec/pcm-dvdenc.c
@@ -146,8 +146,8 @@ static int pcm_dvd_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
                 for (int i = 2; i; i--) {
                     bytestream2_put_be16(&pb, src32[0] >> 16);
                     bytestream2_put_be16(&pb, src32[1] >> 16);
-                    bytestream2_put_byte(&pb, (*src32++) >> 24);
-                    bytestream2_put_byte(&pb, (*src32++) >> 24);
+                    bytestream2_put_byte(&pb, (uint8_t)((*src32++) >> 8));
+                    bytestream2_put_byte(&pb, (uint8_t)((*src32++) >> 8));
                 }
             } while (--blocks);
         } else {
@@ -157,10 +157,10 @@ static int pcm_dvd_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
                     bytestream2_put_be16(&pb, src32[1] >> 16);
                     bytestream2_put_be16(&pb, src32[2] >> 16);
                     bytestream2_put_be16(&pb, src32[3] >> 16);
-                    bytestream2_put_byte(&pb, (*src32++) >> 24);
-                    bytestream2_put_byte(&pb, (*src32++) >> 24);
-                    bytestream2_put_byte(&pb, (*src32++) >> 24);
-                    bytestream2_put_byte(&pb, (*src32++) >> 24);
+                    bytestream2_put_byte(&pb, (uint8_t)((*src32++) >> 8));
+                    bytestream2_put_byte(&pb, (uint8_t)((*src32++) >> 8));
+                    bytestream2_put_byte(&pb, (uint8_t)((*src32++) >> 8));
+                    bytestream2_put_byte(&pb, (uint8_t)((*src32++) >> 8));
                 }
             } while (--blocks);
         }
-- 
2.34.1



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