ffmpeg | branch: master | Manuel Lauss <manuel.la...@gmail.com> | Fri Nov 8 12:51:15 2024 +0100| [a786dd4889ec82ddbddd869ad49a767a7b6cc42b] | committer: Anton Khirnov
libavcodec/sanm: codec47: apply top offset also to diff buffers SAN FRME objects specify width/height as well as offsets from top/left. These offsets need to be taken into account for the diff buffers as well. Fixes playback of all SAN videos of "Shadows of the Empire", which have a constant top offset of 60 (640x272 video on a 640x480 window) and show tons of ghosting and block artifacts. Signed-off-by: Manuel Lauss <manuel.la...@gmail.com> Signed-off-by: Anton Khirnov <an...@khirnov.net> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a786dd4889ec82ddbddd869ad49a767a7b6cc42b --- libavcodec/sanm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/sanm.c b/libavcodec/sanm.c index fcf6234d8a..8bcffb1e90 100644 --- a/libavcodec/sanm.c +++ b/libavcodec/sanm.c @@ -913,8 +913,8 @@ static int old_codec47(SANMVideoContext *ctx, int top, int i, j; ptrdiff_t stride = ctx->pitch; uint8_t *dst = (uint8_t *)ctx->frm0 + left + top * stride; - uint8_t *prev1 = (uint8_t *)ctx->frm1; - uint8_t *prev2 = (uint8_t *)ctx->frm2; + uint8_t *prev1 = (uint8_t *)ctx->frm1 + left + top * stride; + uint8_t *prev2 = (uint8_t *)ctx->frm2 + left + top * stride; uint8_t auxcol[2]; int tbl_pos = bytestream2_tell(&ctx->gb); int seq = bytestream2_get_le16(&ctx->gb); @@ -940,8 +940,8 @@ static int old_codec47(SANMVideoContext *ctx, int top, } if (!seq) { ctx->prev_seq = -1; - memset(prev1, auxcol[0], ctx->height * stride); - memset(prev2, auxcol[1], ctx->height * stride); + memset(prev1, auxcol[0], (ctx->height - top) * stride); + memset(prev2, auxcol[1], (ctx->height - top) * stride); } switch (compr) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
