From: Kostya Shishkov Date: Mon, 15 Jun 2020 17:03:16 +0000 (+0200) Subject: cinepakenc: take into account the number of quantised entries X-Git-Url: https://git.nihav.org/?a=commitdiff_plain;h=592d288947c53bae97b76985c70f37e2b0ff820f;p=nihav.git cinepakenc: take into account the number of quantised entries --- diff --git a/nihav-commonfmt/src/codecs/cinepakenc.rs b/nihav-commonfmt/src/codecs/cinepakenc.rs index d258df9..bf6c25c 100644 --- a/nihav-commonfmt/src/codecs/cinepakenc.rs +++ b/nihav-commonfmt/src/codecs/cinepakenc.rs @@ -243,6 +243,8 @@ struct CinepakEncoder { v4_cb: [YUVCode; 256], v1_cur_cb: [YUVCode; 256], v4_cur_cb: [YUVCode; 256], + v1_len: usize, + v4_len: usize, v1_idx: Vec, v4_idx: Vec, grayscale: bool, @@ -280,6 +282,8 @@ impl CinepakEncoder { v4_cb: [YUVCode::default(); 256], v1_cur_cb: [YUVCode::default(); 256], v4_cur_cb: [YUVCode::default(); 256], + v1_len: 0, + v4_len: 0, grayscale: false, rng: RNG::new(), v1_idx: Vec::new(), @@ -339,7 +343,7 @@ impl CinepakEncoder { voff += vstride * 2; } } - fn find_nearest(codebook: &[YUVCode; 256], code: YUVCode) -> (u8, u32) { + fn find_nearest(codebook: &[YUVCode], code: YUVCode) -> (u8, u32) { let mut min_dist = std::u32::MAX; let mut idx = 0; for (i, cw) in codebook.iter().enumerate() { @@ -600,22 +604,33 @@ impl CinepakEncoder { QuantMode::ELBG => { let mut elbg_v1: ELBG = ELBG::new(&self.v1_cb); let mut elbg_v4: ELBG = ELBG::new(&self.v4_cb); - elbg_v1.quantise(&self.v1_entries, &mut self.v1_cur_cb); - elbg_v4.quantise(&self.v4_entries, &mut self.v4_cur_cb); + + for entry in self.v1_cb.iter_mut().skip(self.v1_len) { + self.rng.fill_entry(entry); + } + for entry in self.v4_cb.iter_mut().skip(self.v4_len) { + self.rng.fill_entry(entry); + } + + self.v1_len = elbg_v1.quantise(&self.v1_entries, &mut self.v1_cur_cb); + self.v4_len = elbg_v4.quantise(&self.v4_entries, &mut self.v4_cur_cb); }, QuantMode::Hybrid => { quantise_median_cut::(&self.v1_entries, &mut self.v1_cur_cb); quantise_median_cut::(&self.v4_entries, &mut self.v4_cur_cb); let mut elbg_v1: ELBG = ELBG::new(&self.v1_cur_cb); let mut elbg_v4: ELBG = ELBG::new(&self.v4_cur_cb); - elbg_v1.quantise(&self.v1_entries, &mut self.v1_cur_cb); - elbg_v4.quantise(&self.v4_entries, &mut self.v4_cur_cb); + self.v1_len = elbg_v1.quantise(&self.v1_entries, &mut self.v1_cur_cb); + self.v4_len = elbg_v4.quantise(&self.v4_entries, &mut self.v4_cur_cb); }, QuantMode::MedianCut => { - quantise_median_cut::(&self.v1_entries, &mut self.v1_cur_cb); - quantise_median_cut::(&self.v4_entries, &mut self.v4_cur_cb); + self.v1_len = quantise_median_cut::(&self.v1_entries, &mut self.v1_cur_cb); + self.v4_len = quantise_median_cut::(&self.v4_entries, &mut self.v4_cur_cb); }, }; + + for e in self.v1_cur_cb.iter_mut().skip(self.v1_len) { *e = YUVCode::default(); } + for e in self.v4_cur_cb.iter_mut().skip(self.v4_len) { *e = YUVCode::default(); } } fn encode_intra(&mut self, bw: &mut ByteWriter, in_frm: &NAVideoBuffer) -> EncoderResult { let (width, height) = in_frm.get_dimensions(0); @@ -660,16 +675,16 @@ impl CinepakEncoder { self.masks.reset(); for (v1_entry, v4_entries) in self.v1_entries.iter().zip(self.v4_entries.chunks(4)) { - let (v1_idx, v1_dist) = Self::find_nearest(&self.v1_cur_cb, *v1_entry); + let (v1_idx, v1_dist) = Self::find_nearest(&self.v1_cur_cb[..self.v1_len], *v1_entry); if v1_dist == 0 { self.masks.put_v1(); self.v1_idx.push(v1_idx); continue; } - let (v40_idx, v40_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[0]); - let (v41_idx, v41_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[1]); - let (v42_idx, v42_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[2]); - let (v43_idx, v43_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[3]); + let (v40_idx, v40_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[0]); + let (v41_idx, v41_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[1]); + let (v42_idx, v42_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[2]); + let (v43_idx, v43_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[3]); if v40_dist + v41_dist + v42_dist + v43_dist > v1_dist { self.masks.put_v4(); self.v4_idx.push(v40_idx); @@ -796,7 +811,7 @@ impl CinepakEncoder { self.masks.put_inter(true); continue; } - let (v1_idx, v1_dist) = Self::find_nearest(&self.v1_cur_cb, *v1_entry); + let (v1_idx, v1_dist) = Self::find_nearest(&self.v1_cur_cb[..self.v1_len], *v1_entry); if skip_dist < v1_dist { self.masks.put_inter(true); continue; @@ -808,10 +823,10 @@ impl CinepakEncoder { self.v1_idx.push(v1_idx); continue; } - let (v40_idx, v40_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[0]); - let (v41_idx, v41_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[1]); - let (v42_idx, v42_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[2]); - let (v43_idx, v43_dist) = Self::find_nearest(&self.v4_cur_cb, v4_entries[3]); + let (v40_idx, v40_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[0]); + let (v41_idx, v41_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[1]); + let (v42_idx, v42_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[2]); + let (v43_idx, v43_dist) = Self::find_nearest(&self.v4_cur_cb[..self.v4_len], v4_entries[3]); if v40_dist + v41_dist + v42_dist + v43_dist > v1_dist { self.masks.put_v4(); self.v4_idx.push(v40_idx);