X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=src%2Fcodecs%2Fh263%2Fdecoder.rs;h=08b47516b901bc58df4a105c984f31c69a2aae06;hb=47add47cb6a02a68e6e94755ba24ff348ca2065b;hp=b200bd55460655cb32839f6418f3e9204cbe7159;hpb=effbebce8a7acf0cbdd6075b523bbe0b1c33bb57;p=nihav.git

diff --git a/src/codecs/h263/decoder.rs b/src/codecs/h263/decoder.rs
index b200bd5..08b4751 100644
--- a/src/codecs/h263/decoder.rs
+++ b/src/codecs/h263/decoder.rs
@@ -81,7 +81,7 @@ impl MVInfo {
                 _ => {},
             };
         }
-        
+
         new_mv
     }
     fn set_zero_mv(&mut self, mb_x: usize) {
@@ -133,6 +133,7 @@ pub struct H263BaseDecoder {
     b_data:     Vec<BMB>,
     pred_coeffs: Vec<PredCoeffs>,
     is_gob:     bool,
+    slice_reset: bool,
     may_have_b_frames: bool,
     mv_data:    Vec<BlockMVInfo>,
 }
@@ -153,7 +154,7 @@ fn clip_ac(ac: i16) -> i16 {
 
 #[allow(dead_code)]
 impl H263BaseDecoder {
-    pub fn new_with_opts(is_gob: bool, may_have_b_frames: bool) -> Self {
+    pub fn new_with_opts(is_gob: bool, slice_reset: bool, may_have_b_frames: bool) -> Self {
         H263BaseDecoder{
             w: 0, h: 0, mb_w: 0, mb_h: 0, num_mb: 0,
             ftype: Type::Special,
@@ -161,16 +162,16 @@ impl H263BaseDecoder {
             last_ts: 0, next_ts: 0, tsdiff: 0,
             has_b: false, b_data: Vec::new(),
             pred_coeffs: Vec::new(),
-            is_gob: is_gob,
+            is_gob: is_gob, slice_reset: slice_reset,
             may_have_b_frames: may_have_b_frames,
             mv_data: Vec::new(),
         }
     }
     pub fn new(is_gob: bool) -> Self {
-        Self::new_with_opts(is_gob, false)
+        Self::new_with_opts(is_gob, true, false)
     }
     pub fn new_b_frames(is_gob: bool) -> Self {
-        Self::new_with_opts(is_gob, true)
+        Self::new_with_opts(is_gob, true, true)
     }
 
     pub fn is_intra(&self) -> bool { self.ftype == Type::I }
@@ -242,19 +243,21 @@ impl H263BaseDecoder {
             self.pred_coeffs.truncate(0);
             self.pred_coeffs.resize(self.mb_w * self.mb_h, ZERO_PRED_COEFFS);
         }
+        sstate.quant = slice.quant;
         for mb_y in 0..self.mb_h {
             for mb_x in 0..self.mb_w {
                 for i in 0..6 { for j in 0..64 { blk[i][j] = 0; } }
 
                 if slice.is_at_end(mb_pos) || (slice.needs_check() && mb_pos > 0 && bd.is_slice_end()) {
                     slice = bd.decode_slice_header(&pinfo)?;
-                    if !self.is_gob {
+                    if !self.is_gob && self.slice_reset {
                         mvi.reset(self.mb_w, mb_x, pinfo.get_mvmode());
                         if is_b || pinfo.is_pb() {
                             mvi2.reset(self.mb_w, mb_x, pinfo.get_mvmode());
                         }
                         cbpi.reset(self.mb_w);
                         sstate.reset_slice(mb_x, mb_y);
+                        sstate.quant = slice.quant;
                     }
                 }
 
@@ -262,6 +265,7 @@ impl H263BaseDecoder {
                 let cbp = binfo.get_cbp();
                 cbpi.set_cbp(mb_x, cbp);
                 cbpi.set_q(mb_x, binfo.get_q());
+                sstate.quant = binfo.get_q();
                 if binfo.is_intra() {
                     if save_b_data {
                         self.mv_data.push(BlockMVInfo::Intra);