core/scale: use BT.601 YUV by default in conversion

[nihav.git] / nihav-core / src / scale / mod.rs

diff --git a/nihav-core/src/scale/mod.rs b/nihav-core/src/scale/mod.rs
index 0ba1e21ed124c61d6469025f745664ee9a479ed7..caf489bb63a4188651b838c54720cb995684fd45 100644 (file)
--- a/nihav-core/src/scale/mod.rs
+++ b/nihav-core/src/scale/mod.rs
@@ -21,8 +21,13 @@ mod kernel;
 
 mod colorcvt;
 mod repack;
+#[allow(clippy::module_inception)]
 mod scale;
 
+mod palette;
+
+pub use crate::scale::palette::{palettise_frame, QuantisationMode, PaletteSearchMode};
+
 /// Image format information used by the converter.
 #[derive(Clone,Copy,PartialEq)]
 pub struct ScaleInfo {
@@ -84,6 +89,7 @@ const KERNELS: &[KernelDesc] = &[
     KernelDesc { name: "pack",          create: repack::create_pack },
     KernelDesc { name: "unpack",        create: repack::create_unpack },
     KernelDesc { name: "depal",         create: repack::create_depal },
+    KernelDesc { name: "palette",       create: palette::create_palettise },
     KernelDesc { name: "scale",         create: scale::create_scale },
     KernelDesc { name: "rgb_to_yuv",    create: colorcvt::create_rgb2yuv },
     KernelDesc { name: "yuv_to_rgb",    create: colorcvt::create_yuv2rgb },
@@ -185,6 +191,39 @@ fn copy(pic_in: &NABufferType, pic_out: &mut NABufferType)
                 }
             }
         }
+    } else if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf16(), pic_out.get_vbuf16()) {
+        let mut same = true;
+        let num_components = sbuf.get_info().get_format().get_num_comp();
+        for i in 0..num_components {
+            if sbuf.get_stride(i) != dbuf.get_stride(i) {
+                same = false;
+                break;
+            }
+            if sbuf.get_offset(i) != dbuf.get_offset(i) {
+                same = false;
+                break;
+            }
+        }
+        if same {
+            let sdata = sbuf.get_data();
+            let ddata = dbuf.get_data_mut().unwrap();
+            ddata.copy_from_slice(&sdata[0..]);
+        } else {
+            let sdata = sbuf.get_data();
+            for comp in 0..num_components {
+                let (_, h) = sbuf.get_dimensions(comp);
+                let src = &sdata[sbuf.get_offset(comp)..];
+                let sstride = sbuf.get_stride(comp);
+                let doff = dbuf.get_offset(comp);
+                let dstride = dbuf.get_stride(comp);
+                let ddata = dbuf.get_data_mut().unwrap();
+                let dst = &mut ddata[doff..];
+                let copy_size = sstride.min(dstride);
+                for (dline, sline) in dst.chunks_exact_mut(dstride).take(h).zip(src.chunks_exact(sstride)) {
+                    (&mut dline[..copy_size]).copy_from_slice(&sline[..copy_size]);
+                }
+            }
+        }
     } else {
         unimplemented!();
     }
@@ -227,6 +266,7 @@ println!("convert {} -> {}", ifmt, ofmt);
     let needs_convert = inname != outname;
     let scale_before_cvt = is_better_fmt(&ifmt, &ofmt) && needs_convert
                            && (ofmt.fmt.get_max_subsampling() == 0);
+    let needs_palettise = ofmt.fmt.palette;
 //todo stages for model and gamma conversion
 
     let mut stages: Option<Stage> = None;
@@ -264,12 +304,18 @@ println!("[adding scale]");
         cur_fmt = new_stage.fmt_out;
         add_stage!(stages, new_stage);
     }
-    if needs_pack {
+    if needs_pack && !needs_palettise {
 println!("[adding pack]");
         let new_stage = Stage::new("pack", &cur_fmt, &ofmt)?;
         //cur_fmt = new_stage.fmt_out;
         add_stage!(stages, new_stage);
     }
+    if needs_palettise {
+println!("[adding palettise]");
+        let new_stage = Stage::new("palette", &cur_fmt, &ofmt)?;
+        //cur_fmt = new_stage.fmt_out;
+        add_stage!(stages, new_stage);
+    }
 
     if let Some(ref mut head) = stages {
         head.drop_last_tmp();
@@ -307,7 +353,7 @@ pub fn flip_picture(pic: &mut NABufferType) -> ScaleResult<()> {
             }
         },
         NABufferType::Video16(ref mut vb) => {
-            let ncomp = vb.get_num_components();
+            let ncomp = vb.get_num_components().max(1);
             for comp in 0..ncomp {
                 let off    = vb.get_offset(comp);
                 let stride = vb.get_stride(comp);
@@ -319,7 +365,7 @@ pub fn flip_picture(pic: &mut NABufferType) -> ScaleResult<()> {
             }
         },
         NABufferType::Video32(ref mut vb) => {
-            let ncomp = vb.get_num_components();
+            let ncomp = vb.get_num_components().max(1);
             for comp in 0..ncomp {
                 let off    = vb.get_offset(comp);
                 let stride = vb.get_stride(comp);
@@ -341,6 +387,15 @@ pub fn flip_picture(pic: &mut NABufferType) -> ScaleResult<()> {
                 let mut line1 = vec![0; stride];
                 swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice());
             }
+            if ncomp == 0 && vb.get_stride(0) != 0 {
+                let off    = vb.get_offset(0);
+                let stride = vb.get_stride(0);
+                let (_, h) = vb.get_dimensions(0);
+                let data = vb.get_data_mut().unwrap();
+                let mut line0 = vec![0; stride];
+                let mut line1 = vec![0; stride];
+                swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice());
+            }
         },
         _ => { return Err(ScaleError::InvalidArgument); },
     };
@@ -475,8 +530,27 @@ mod test {
         let uoff = obuf.get_offset(1);
         let voff = obuf.get_offset(2);
         let odata = obuf.get_data();
-        assert_eq!(odata[yoff], 28);
-        assert_eq!(odata[uoff], 154);
-        assert_eq!(odata[voff], 103);
+        assert_eq!(odata[yoff], 11);
+        assert_eq!(odata[uoff], 162);
+        assert_eq!(odata[voff], 118);
+    }
+    #[test]
+    fn test_scale_and_convert_to_pal() {
+        let mut in_pic = alloc_video_buffer(NAVideoInfo::new(7, 3, false, YUV420_FORMAT), 3).unwrap();
+        fill_pic(&mut in_pic, 142);
+        let mut out_pic = alloc_video_buffer(NAVideoInfo::new(4, 4, false, PAL8_FORMAT), 0).unwrap();
+        fill_pic(&mut out_pic, 0);
+        let ifmt = get_scale_fmt_from_pic(&in_pic);
+        let ofmt = get_scale_fmt_from_pic(&out_pic);
+        let mut scaler = NAScale::new(ifmt, ofmt).unwrap();
+        scaler.convert(&in_pic, &mut out_pic).unwrap();
+        let obuf = out_pic.get_vbuf().unwrap();
+        let dataoff = obuf.get_offset(0);
+        let paloff  = obuf.get_offset(1);
+        let odata = obuf.get_data();
+        assert_eq!(odata[dataoff], 0);
+        assert_eq!(odata[paloff], 157);
+        assert_eq!(odata[paloff + 1], 129);
+        assert_eq!(odata[paloff + 2], 170);
     }
 }