From 8c3f822a3224477463989f8be27c46d70e257579 Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Sat, 20 May 2023 17:07:13 +0200 Subject: [PATCH] cinepakenc: try to calculate the number of strips automatically if requested --- nihav-commonfmt/src/codecs/cinepakenc.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/nihav-commonfmt/src/codecs/cinepakenc.rs b/nihav-commonfmt/src/codecs/cinepakenc.rs index f4ac9b2..8273de0 100644 --- a/nihav-commonfmt/src/codecs/cinepakenc.rs +++ b/nihav-commonfmt/src/codecs/cinepakenc.rs @@ -1000,6 +1000,12 @@ impl NAEncoder for CinepakEncoder { fn encode(&mut self, frm: &NAFrame) -> EncoderResult<()> { let buf = frm.get_buffer(); if let Some(ref vbuf) = buf.get_vbuf() { + if self.nstrips == 0 { + let (w, h) = vbuf.get_dimensions(0); + self.nstrips = ((((w * h) >> 4) + 1200) / 2400).max(1).min(3); + let strip_h = ((h + self.nstrips - 1) / self.nstrips + 3) & !3; + self.nstrips = (h + strip_h - 1) / strip_h; + } let cur_strips = self.v1_cb.len(); if cur_strips != self.nstrips { self.frmcount = 0; -- 2.30.2