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| author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2020-01-13 19:03:43 +0100 |
|---|---|---|
| committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2020-01-13 19:03:43 +0100 |
| commit | afd175ff93417cf3f49d790af1c7f9d4198fed2c (patch) | |
| tree | c214b076f2a5ef9210d7ddf1cbf16215a385d487 /nihav-duck/src | |
| parent | 138b7d0a1f3baeac9427f194fd9a3f83abb22651 (diff) | |
| download | nihav-afd175ff93417cf3f49d790af1c7f9d4198fed2c.tar.gz | |
vp3: VP30 should update golden frames on low quants
Diffstat (limited to 'nihav-duck/src')
| -rw-r--r-- | nihav-duck/src/codecs/vp3.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nihav-duck/src/codecs/vp3.rs b/nihav-duck/src/codecs/vp3.rs index eace89e..17365ff 100644 --- a/nihav-duck/src/codecs/vp3.rs +++ b/nihav-duck/src/codecs/vp3.rs @@ -312,6 +312,7 @@ struct VP34Decoder { mb_h: usize, version: u8, is_intra: bool, + update_gf: bool, quant: usize, shuf: VPShuffler, codes: Codes, @@ -573,6 +574,7 @@ impl VP34Decoder { mb_h: 0, version, is_intra: true, + update_gf: false, quant: 0, shuf: VPShuffler::new(), codes: Codes::None, @@ -1266,6 +1268,9 @@ impl VP34Decoder { } let dc_quant = VP30_DC_SCALES[self.quant] * 10; let ac_quant = VP30_AC_SCALES[self.quant]; + + self.update_gf = ac_quant <= 50; + rescale_qmat(&mut self.qmat_y, VP3_QMAT_Y, dc_quant, ac_quant, 2); rescale_qmat(&mut self.qmat_c, VP3_QMAT_C, dc_quant, ac_quant, 2); rescale_qmat(&mut self.qmat_y_p, VP3_QMAT_INTER, dc_quant, ac_quant, 4); @@ -1835,7 +1840,7 @@ impl NADecoder for VP34Decoder { _ => return Err(DecoderError::Bug), } - if self.is_intra { + if self.is_intra || self.update_gf { self.shuf.add_golden_frame(buf.clone()); } self.shuf.add_frame(buf.clone()); |