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[FFmpeg-devel,1/3] avcodec/ffv1enc: Slice combination is unsupported

Message ID 20231007001444.31861-1-michael@niedermayer.cc
State New
Headers show
Series [FFmpeg-devel,1/3] avcodec/ffv1enc: Slice combination is unsupported | expand

Commit Message

Michael Niedermayer Oct. 7, 2023, 12:14 a.m. UTC 
We always write minimal slices, the size calculation is wrong in some
corner cases but as its always 1x1 (minus1) we can for now just hard-code it

This helps with ticket 5548

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/ffv1enc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 2778c63012e..4d0ddc167ae 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -914,8 +914,8 @@  static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
 
     put_symbol(c, state, (fs->slice_x     +1)*f->num_h_slices / f->width   , 0);
     put_symbol(c, state, (fs->slice_y     +1)*f->num_v_slices / f->height  , 0);
-    put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
-    put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
+    put_symbol(c, state, 0, 0);
+    put_symbol(c, state, 0, 0);
     for (j=0; j<f->plane_count; j++) {
         put_symbol(c, state, f->plane[j].quant_table_index, 0);
         av_assert0(f->plane[j].quant_table_index == f->context_model);