vp6: split data into separate module

diff --git a/nihav-duck/src/codecs/mod.rs b/nihav-duck/src/codecs/mod.rs
index da702b4649d327e3185d89a6e1428b496bfb8593..8464c30b6841dd1ec41dd11c2bbfe5edd54c579b 100644 (file)
--- a/nihav-duck/src/codecs/mod.rs
+++ b/nihav-duck/src/codecs/mod.rs
@@ -33,6 +33,8 @@ mod vp56;
 #[allow(clippy::needless_range_loop)]
 mod vp5;
 #[cfg(feature="decoder_vp6")]
+mod vp6data;
+#[cfg(feature="decoder_vp6")]
 #[allow(clippy::needless_range_loop)]
 mod vp6;
 #[cfg(feature="decoder_vp7")]

diff --git a/nihav-duck/src/codecs/vp6.rs b/nihav-duck/src/codecs/vp6.rs
index ca8946f5ad4d7032259c499c05dd875d3305b547..20491ed6445c66ac4a7768ebd6923b2c3ae7956e 100644 (file)
--- a/nihav-duck/src/codecs/vp6.rs
+++ b/nihav-duck/src/codecs/vp6.rs
@@ -4,13 +4,7 @@ use nihav_codec_support::codecs::{MV, ZIGZAG};
 use nihav_codec_support::codecs::blockdsp::edge_emu;
 use super::vpcommon::*;
 use super::vp56::*;
-
-const VERSION_VP60: u8 = 6;
-//const VERSION_VP61: u8 = 7;
-const VERSION_VP62: u8 = 8;
-
-const VP6_SIMPLE_PROFILE: u8    = 0;
-const VP6_ADVANCED_PROFILE: u8  = 3;
+use super::vp6data::*;
 
 #[derive(Default)]
 struct VP6BR {
@@ -110,8 +104,6 @@ impl VP56Parser for VP6BR {
         Ok(hdr)
     }
     fn decode_mv(&self, bc: &mut BoolCoder, model: &VP56MVModel) -> i16 {
-        const LONG_VECTOR_ORDER: [usize; 7] = [ 0, 1, 2, 7, 6, 5, 4 ];
-
         let val = if !bc.read_prob(model.nz_prob) { // short vector
                 vp_tree!(bc, model.tree_probs[0],
                          vp_tree!(bc, model.tree_probs[1],
@@ -139,20 +131,6 @@ impl VP56Parser for VP6BR {
         }
     }
     fn reset_models(&self, models: &mut VP56Models) {
-        const NZ_PROBS: [u8; 2] = [ 162, 164 ];
-        const RAW_PROBS: [[u8; 8]; 2] = [
-            [ 247, 210, 135, 68, 138, 220, 239, 246 ],
-            [ 244, 184, 201, 44, 173, 221, 239, 253 ]
-        ];
-        const TREE_PROBS: [[u8; 7]; 2] = [
-            [ 225, 146, 172, 147, 214,  39, 156 ],
-            [ 204, 170, 119, 235, 140, 230, 228 ]
-        ];
-        const ZERO_RUN_PROBS: [[u8; 14]; 2] = [
-            [ 198, 197, 196, 146, 198, 204, 169, 142, 130, 136, 149, 149, 191, 249 ],
-            [ 135, 201, 181, 154,  98, 117, 132, 126, 146, 169, 184, 240, 246, 254 ]
-        ];
-
         for (i, mdl) in models.mv_models.iter_mut().enumerate() {
             mdl.nz_prob         = NZ_PROBS[i];
             mdl.sign_prob       = 128;
@@ -163,17 +141,6 @@ impl VP56Parser for VP6BR {
         reset_scan(&mut models.vp6models, self.interlaced);
     }
     fn decode_mv_models(&self, bc: &mut BoolCoder, models: &mut [VP56MVModel; 2]) -> DecoderResult<()> {
-        const HAS_NZ_PROB: [u8; 2] = [ 237, 231 ];
-        const HAS_SIGN_PROB: [u8; 2] = [ 246, 243 ];
-        const HAS_TREE_PROB: [[u8; 7]; 2] = [
-            [ 253, 253, 254, 254, 254, 254, 254 ],
-            [ 245, 253, 254, 254, 254, 254, 254 ]
-        ];
-        const HAS_RAW_PROB: [[u8; 8]; 2] = [
-            [ 254, 254, 254, 254, 254, 250, 250, 252 ],
-            [ 254, 254, 254, 254, 254, 251, 251, 254 ]
-        ];
-
         for comp in 0..2 {
             if bc.read_prob(HAS_NZ_PROB[comp]) {
                 models[comp].nz_prob            = bc.read_probability();
@@ -199,29 +166,10 @@ impl VP56Parser for VP6BR {
         Ok(())
     }
     fn decode_coeff_models(&self, bc: &mut BoolCoder, models: &mut VP56Models, is_intra: bool) -> DecoderResult<()> {
-        const COEF_PROBS: [[u8; 11]; 2] = [
-            [ 146, 255, 181, 207, 232, 243, 238, 251, 244, 250, 249 ],
-            [ 179, 255, 214, 240, 250, 255, 244, 255, 255, 255, 255 ]
-        ];
-        const SCAN_UPD_PROBS: [u8; 64] = [
-              0, 132, 132, 159, 153, 151, 161, 170,
-            164, 162, 136, 110, 103, 114, 129, 118,
-            124, 125, 132, 136, 114, 110, 142, 135,
-            134, 123, 143, 126, 153, 183, 166, 161,
-            171, 180, 179, 164, 203, 218, 225, 217,
-            215, 206, 203, 217, 229, 241, 248, 243,
-            253, 255, 253, 255, 255, 255, 255, 255,
-            255, 255, 255, 255, 255, 255, 255, 255
-        ];
-        const ZERO_RUN_PROBS: [[u8; 14]; 2] = [
-            [ 219, 246, 238, 249, 232, 239, 249, 255, 248, 253, 239, 244, 241, 248 ],
-            [ 198, 232, 251, 253, 219, 241, 253, 255, 248, 249, 244, 238, 251, 255 ]
-        ];
-
         let mut def_prob = [128u8; 11];
         for plane in 0..2 {
             for i in 0..11 {
-                if bc.read_prob(COEF_PROBS[plane][i]) {
+                if bc.read_prob(HAS_COEF_PROBS[plane][i]) {
                     def_prob[i]                 = bc.read_probability();
                     models.coeff_models[plane].dc_value_probs[i] = def_prob[i];
                 } else if is_intra {
@@ -232,7 +180,7 @@ impl VP56Parser for VP6BR {
 
         if bc.read_bool() {
             for i in 1..64 {
-                if bc.read_prob(SCAN_UPD_PROBS[i]) {
+                if bc.read_prob(HAS_SCAN_UPD_PROBS[i]) {
                     models.vp6models.scan_order[i]  = bc.read_bits(4) as usize;
                 }
             }
@@ -243,7 +191,7 @@ impl VP56Parser for VP6BR {
 
         for comp in 0..2 {
             for i in 0..14 {
-                if bc.read_prob(ZERO_RUN_PROBS[comp][i]) {
+                if bc.read_prob(HAS_ZERO_RUN_PROBS[comp][i]) {
                     models.vp6models.zero_run_probs[comp][i] = bc.read_probability();
                 }
             }
@@ -423,27 +371,6 @@ fn update_scan(model: &mut VP6Models) {
 }
 
 fn reset_scan(model: &mut VP6Models, interlaced: bool) {
-    const VP6_DEFAULT_SCAN_ORDER: [usize; 64] = [
-         0,  0,  1,  1,  1,  2,  2,  2,
-         2,  2,  2,  3,  3,  4,  4,  4,
-         5,  5,  5,  5,  6,  6,  7,  7,
-         7,  7,  7,  8,  8,  9,  9,  9,
-         9,  9,  9, 10, 10, 11, 11, 11,
-        11, 11, 11, 12, 12, 12, 12, 12,
-        12, 13, 13, 13, 13, 13, 14, 14,
-        14, 14, 15, 15, 15, 15, 15, 15
-    ];
-    const VP6_INTERLACED_SCAN_ORDER: [usize; 64] = [
-         0,  1,  0,  1,  1,  2,  5,  3,
-         2,  2,  2,  2,  4,  7,  8, 10,
-         9,  7,  5,  4,  2,  3,  5,  6,
-         8,  9, 11, 12, 13, 12, 11, 10,
-         9,  7,  5,  4,  6,  7,  9, 11,
-        12, 12, 13, 13, 14, 12, 11,  9,
-         7,  9, 11, 12, 14, 14, 14, 15,
-        13, 11, 13, 15, 15, 15, 15, 15
-    ];
-
     if !interlaced {
         model.scan_order.copy_from_slice(&VP6_DEFAULT_SCAN_ORDER);
     } else {
@@ -493,7 +420,6 @@ fn decode_zero_run_bc(bc: &mut BoolCoder, probs: &[u8; 14]) -> usize {
 }
 
 fn decode_token_huff(br: &mut BitReader, huff: &VP6Huff) -> DecoderResult<(i16, bool)> {
-    const COEF_ADD_BITS: [u8; 6] = [ 1, 2, 3, 4, 5, 11 ];
     let tok                                     = br.read_huff(huff)?;
     match tok {
         0   => Ok((0, false)),
@@ -506,7 +432,7 @@ fn decode_token_huff(br: &mut BitReader, huff: &VP6Huff) -> DecoderResult<(i16,
         },
         5 | 6 | 7 | 8 | 9 | 10 => {
             let base = (tok - 5) as usize;
-            let add_bits                        = br.read(COEF_ADD_BITS[base])? as i16;
+            let add_bits                        = br.read(VP6_COEF_ADD_BITS[base])? as i16;
             let val = VP56_COEF_BASE[base] + add_bits;
             if !br.read_bool()? {
                 Ok((val, false))
@@ -764,231 +690,3 @@ mod test {
     }
     // todo find good sample for vp6a test
 }
-
-const VP6_AC_PROBS: [[[[u8; 11]; 6]; 2]; 3] = [
-  [
-    [
-      [ 227, 246, 230, 247, 244, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 209, 231, 231, 249, 249, 253, 255, 255, 255 ],
-      [ 255, 255, 225, 242, 241, 251, 253, 255, 255, 255, 255 ],
-      [ 255, 255, 241, 253, 252, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 248, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
-    ], [
-      [ 240, 255, 248, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 240, 253, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
-    ]
-  ], [
-    [
-      [ 206, 203, 227, 239, 247, 255, 253, 255, 255, 255, 255 ],
-      [ 207, 199, 220, 236, 243, 252, 252, 255, 255, 255, 255 ],
-      [ 212, 219, 230, 243, 244, 253, 252, 255, 255, 255, 255 ],
-      [ 236, 237, 247, 252, 253, 255, 255, 255, 255, 255, 255 ],
-      [ 240, 240, 248, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
-    ], [
-      [ 230, 233, 249, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 238, 238, 250, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 248, 251, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
-    ]
-  ], [
-    [
-      [ 225, 239, 227, 231, 244, 253, 243, 255, 255, 253, 255 ],
-      [ 232, 234, 224, 228, 242, 249, 242, 252, 251, 251, 255 ],
-      [ 235, 249, 238, 240, 251, 255, 249, 255, 253, 253, 255 ],
-      [ 249, 253, 251, 250, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 251, 250, 249, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
-    ], [
-      [ 243, 244, 250, 250, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 249, 248, 250, 253, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
-      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
-    ]
-  ]
-];
-
-const VP6_DC_WEIGHTS: [[[i16; 2]; 3]; 5] = [
-    [ [ 122, 133 ], [ 133,  51 ], [ 142, -16 ] ],
-    [ [   0,   1 ], [   0,   1 ], [   0,   1 ] ],
-    [ [  78, 171 ], [ 169,  71 ], [ 221, -30 ] ],
-    [ [ 139, 117 ], [ 214,  44 ], [ 246,  -3 ] ],
-    [ [ 168,  79 ], [ 210,  38 ], [ 203,  17 ] ]
-];
-
-const VP6_IDX_TO_AC_BAND: [usize; 64] = [
-    0, 0, 1, 1, 1, 2, 2, 2,
-    2, 2, 2, 3, 3, 3, 3, 3,
-    3, 3, 3, 3, 3, 3, 4, 4,
-    4, 4, 4, 4, 4, 4, 4, 4,
-    4, 4, 4, 4, 4, 5, 5, 5,
-    5, 5, 5, 5, 5, 5, 5, 5,
-    5, 5, 5, 5, 5, 5, 5, 5,
-    5, 5, 5, 5, 5, 5, 5, 5
-];
-
-const VP6_BICUBIC_COEFFS: [[[i16; 4]; 8]; 17] = [
-  [
-    [   0, 128,   0,   0 ],
-    [  -3, 122,   9,   0 ],
-    [  -4, 109,  24,  -1 ],
-    [  -5,  91,  45,  -3 ],
-    [  -4,  68,  68,  -4 ],
-    [  -3,  45,  91,  -5 ],
-    [  -1,  24, 109,  -4 ],
-    [   0,   9, 122,  -3 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -4, 124,   9,  -1 ],
-    [  -5, 110,  25,  -2 ],
-    [  -6,  91,  46,  -3 ],
-    [  -5,  69,  69,  -5 ],
-    [  -3,  46,  91,  -6 ],
-    [  -2,  25, 110,  -5 ],
-    [  -1,   9, 124,  -4 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -4, 123,  10,  -1 ],
-    [  -6, 110,  26,  -2 ],
-    [  -7,  92,  47,  -4 ],
-    [  -6,  70,  70,  -6 ],
-    [  -4,  47,  92,  -7 ],
-    [  -2,  26, 110,  -6 ],
-    [  -1,  10, 123,  -4 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -5, 124,  10,  -1 ],
-    [  -7, 110,  27,  -2 ],
-    [  -7,  91,  48,  -4 ],
-    [  -6,  70,  70,  -6 ],
-    [  -4,  48,  92,  -8 ],
-    [  -2,  27, 110,  -7 ],
-    [  -1,  10, 124,  -5 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -6, 124,  11,  -1 ],
-    [  -8, 111,  28,  -3 ],
-    [  -8,  92,  49,  -5 ],
-    [  -7,  71,  71,  -7 ],
-    [  -5,  49,  92,  -8 ],
-    [  -3,  28, 111,  -8 ],
-    [  -1,  11, 124,  -6 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -6, 123,  12,  -1 ],
-    [  -9, 111,  29,  -3 ],
-    [  -9,  93,  50,  -6 ],
-    [  -8,  72,  72,  -8 ],
-    [  -6,  50,  93,  -9 ],
-    [  -3,  29, 111,  -9 ],
-    [  -1,  12, 123,  -6 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -7, 124,  12,  -1 ],
-    [ -10, 111,  30,  -3 ],
-    [ -10,  93,  51,  -6 ],
-    [  -9,  73,  73,  -9 ],
-    [  -6,  51,  93, -10 ],
-    [  -3,  30, 111, -10 ],
-    [  -1,  12, 124,  -7 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -7, 123,  13,  -1 ],
-    [ -11, 112,  31,  -4 ],
-    [ -11,  94,  52,  -7 ],
-    [ -10,  74,  74, -10 ],
-    [  -7,  52,  94, -11 ],
-    [  -4,  31, 112, -11 ],
-    [  -1,  13, 123,  -7 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -8, 124,  13,  -1 ],
-    [ -12, 112,  32,  -4 ],
-    [ -12,  94,  53,  -7 ],
-    [ -10,  74,  74, -10 ],
-    [  -7,  53,  94, -12 ],
-    [  -4,  32, 112, -12 ],
-    [  -1,  13, 124,  -8 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -9, 124,  14,  -1 ],
-    [ -13, 112,  33,  -4 ],
-    [ -13,  95,  54,  -8 ],
-    [ -11,  75,  75, -11 ],
-    [  -8,  54,  95, -13 ],
-    [  -4,  33, 112, -13 ],
-    [  -1,  14, 124,  -9 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -9, 123,  15,  -1 ],
-    [ -14, 113,  34,  -5 ],
-    [ -14,  95,  55,  -8 ],
-    [ -12,  76,  76, -12 ],
-    [  -8,  55,  95, -14 ],
-    [  -5,  34, 112, -13 ],
-    [  -1,  15, 123,  -9 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [ -10, 124,  15,  -1 ],
-    [ -14, 113,  34,  -5 ],
-    [ -15,  96,  56,  -9 ],
-    [ -13,  77,  77, -13 ],
-    [  -9,  56,  96, -15 ],
-    [  -5,  34, 113, -14 ],
-    [  -1,  15, 124, -10 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [ -10, 123,  16,  -1 ],
-    [ -15, 113,  35,  -5 ],
-    [ -16,  98,  56, -10 ],
-    [ -14,  78,  78, -14 ],
-    [ -10,  56,  98, -16 ],
-    [  -5,  35, 113, -15 ],
-    [  -1,  16, 123, -10 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [ -11, 124,  17,  -2 ],
-    [ -16, 113,  36,  -5 ],
-    [ -17,  98,  57, -10 ],
-    [ -14,  78,  78, -14 ],
-    [ -10,  57,  98, -17 ],
-    [  -5,  36, 113, -16 ],
-    [  -2,  17, 124, -11 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [ -12, 125,  17,  -2 ],
-    [ -17, 114,  37,  -6 ],
-    [ -18,  99,  58, -11 ],
-    [ -15,  79,  79, -15 ],
-    [ -11,  58,  99, -18 ],
-    [  -6,  37, 114, -17 ],
-    [  -2,  17, 125, -12 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [ -12, 124,  18,  -2 ],
-    [ -18, 114,  38,  -6 ],
-    [ -19,  99,  59, -11 ],
-    [ -16,  80,  80, -16 ],
-    [ -11,  59,  99, -19 ],
-    [  -6,  38, 114, -18 ],
-    [  -2,  18, 124, -12 ]
-  ], [
-    [   0, 128,   0,   0 ],
-    [  -4, 118,  16,  -2 ],
-    [  -7, 106,  34,  -5 ],
-    [  -8,  90,  53,  -7 ],
-    [  -8,  72,  72,  -8 ],
-    [  -7,  53,  90,  -8 ],
-    [  -5,  34, 106,  -7 ],
-    [  -2,  16, 118,  -4 ]
-  ]
-];

diff --git a/nihav-duck/src/codecs/vp6data.rs b/nihav-duck/src/codecs/vp6data.rs
new file mode 100644 (file)
index 0000000..762e5a0
--- /dev/null
+++ b/nihav-duck/src/codecs/vp6data.rs
@@ -0,0 +1,303 @@
+pub const VERSION_VP60: u8 = 6;
+//pub const VERSION_VP61: u8 = 7;
+pub const VERSION_VP62: u8 = 8;
+
+pub const VP6_SIMPLE_PROFILE: u8    = 0;
+pub const VP6_ADVANCED_PROFILE: u8  = 3;
+
+pub const LONG_VECTOR_ORDER: [usize; 7] = [ 0, 1, 2, 7, 6, 5, 4 ];
+
+pub const NZ_PROBS: [u8; 2] = [ 162, 164 ];
+pub const RAW_PROBS: [[u8; 8]; 2] = [
+    [ 247, 210, 135, 68, 138, 220, 239, 246 ],
+    [ 244, 184, 201, 44, 173, 221, 239, 253 ]
+];
+pub const TREE_PROBS: [[u8; 7]; 2] = [
+    [ 225, 146, 172, 147, 214,  39, 156 ],
+    [ 204, 170, 119, 235, 140, 230, 228 ]
+];
+pub const ZERO_RUN_PROBS: [[u8; 14]; 2] = [
+    [ 198, 197, 196, 146, 198, 204, 169, 142, 130, 136, 149, 149, 191, 249 ],
+    [ 135, 201, 181, 154,  98, 117, 132, 126, 146, 169, 184, 240, 246, 254 ]
+];
+
+pub const HAS_NZ_PROB: [u8; 2] = [ 237, 231 ];
+pub const HAS_SIGN_PROB: [u8; 2] = [ 246, 243 ];
+pub const HAS_TREE_PROB: [[u8; 7]; 2] = [
+    [ 253, 253, 254, 254, 254, 254, 254 ],
+    [ 245, 253, 254, 254, 254, 254, 254 ]
+];
+pub const HAS_RAW_PROB: [[u8; 8]; 2] = [
+    [ 254, 254, 254, 254, 254, 250, 250, 252 ],
+    [ 254, 254, 254, 254, 254, 251, 251, 254 ]
+];
+
+pub const HAS_COEF_PROBS: [[u8; 11]; 2] = [
+    [ 146, 255, 181, 207, 232, 243, 238, 251, 244, 250, 249 ],
+    [ 179, 255, 214, 240, 250, 255, 244, 255, 255, 255, 255 ]
+];
+pub const HAS_SCAN_UPD_PROBS: [u8; 64] = [
+      0, 132, 132, 159, 153, 151, 161, 170,
+    164, 162, 136, 110, 103, 114, 129, 118,
+    124, 125, 132, 136, 114, 110, 142, 135,
+    134, 123, 143, 126, 153, 183, 166, 161,
+    171, 180, 179, 164, 203, 218, 225, 217,
+    215, 206, 203, 217, 229, 241, 248, 243,
+    253, 255, 253, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255
+];
+pub const HAS_ZERO_RUN_PROBS: [[u8; 14]; 2] = [
+    [ 219, 246, 238, 249, 232, 239, 249, 255, 248, 253, 239, 244, 241, 248 ],
+    [ 198, 232, 251, 253, 219, 241, 253, 255, 248, 249, 244, 238, 251, 255 ]
+];
+
+pub const VP6_AC_PROBS: [[[[u8; 11]; 6]; 2]; 3] = [
+  [
+    [
+      [ 227, 246, 230, 247, 244, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 209, 231, 231, 249, 249, 253, 255, 255, 255 ],
+      [ 255, 255, 225, 242, 241, 251, 253, 255, 255, 255, 255 ],
+      [ 255, 255, 241, 253, 252, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 248, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
+    ], [
+      [ 240, 255, 248, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 240, 253, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
+    ]
+  ], [
+    [
+      [ 206, 203, 227, 239, 247, 255, 253, 255, 255, 255, 255 ],
+      [ 207, 199, 220, 236, 243, 252, 252, 255, 255, 255, 255 ],
+      [ 212, 219, 230, 243, 244, 253, 252, 255, 255, 255, 255 ],
+      [ 236, 237, 247, 252, 253, 255, 255, 255, 255, 255, 255 ],
+      [ 240, 240, 248, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
+    ], [
+      [ 230, 233, 249, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 238, 238, 250, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 248, 251, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
+    ]
+  ], [
+    [
+      [ 225, 239, 227, 231, 244, 253, 243, 255, 255, 253, 255 ],
+      [ 232, 234, 224, 228, 242, 249, 242, 252, 251, 251, 255 ],
+      [ 235, 249, 238, 240, 251, 255, 249, 255, 253, 253, 255 ],
+      [ 249, 253, 251, 250, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 251, 250, 249, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
+    ], [
+      [ 243, 244, 250, 250, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 249, 248, 250, 253, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ],
+      [ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 ]
+    ]
+  ]
+];
+
+pub const VP6_DC_WEIGHTS: [[[i16; 2]; 3]; 5] = [
+    [ [ 122, 133 ], [ 133,  51 ], [ 142, -16 ] ],
+    [ [   0,   1 ], [   0,   1 ], [   0,   1 ] ],
+    [ [  78, 171 ], [ 169,  71 ], [ 221, -30 ] ],
+    [ [ 139, 117 ], [ 214,  44 ], [ 246,  -3 ] ],
+    [ [ 168,  79 ], [ 210,  38 ], [ 203,  17 ] ]
+];
+
+pub const VP6_IDX_TO_AC_BAND: [usize; 64] = [
+    0, 0, 1, 1, 1, 2, 2, 2,
+    2, 2, 2, 3, 3, 3, 3, 3,
+    3, 3, 3, 3, 3, 3, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 5, 5, 5,
+    5, 5, 5, 5, 5, 5, 5, 5,
+    5, 5, 5, 5, 5, 5, 5, 5,
+    5, 5, 5, 5, 5, 5, 5, 5
+];
+
+pub const VP6_BICUBIC_COEFFS: [[[i16; 4]; 8]; 17] = [
+  [
+    [   0, 128,   0,   0 ],
+    [  -3, 122,   9,   0 ],
+    [  -4, 109,  24,  -1 ],
+    [  -5,  91,  45,  -3 ],
+    [  -4,  68,  68,  -4 ],
+    [  -3,  45,  91,  -5 ],
+    [  -1,  24, 109,  -4 ],
+    [   0,   9, 122,  -3 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -4, 124,   9,  -1 ],
+    [  -5, 110,  25,  -2 ],
+    [  -6,  91,  46,  -3 ],
+    [  -5,  69,  69,  -5 ],
+    [  -3,  46,  91,  -6 ],
+    [  -2,  25, 110,  -5 ],
+    [  -1,   9, 124,  -4 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -4, 123,  10,  -1 ],
+    [  -6, 110,  26,  -2 ],
+    [  -7,  92,  47,  -4 ],
+    [  -6,  70,  70,  -6 ],
+    [  -4,  47,  92,  -7 ],
+    [  -2,  26, 110,  -6 ],
+    [  -1,  10, 123,  -4 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -5, 124,  10,  -1 ],
+    [  -7, 110,  27,  -2 ],
+    [  -7,  91,  48,  -4 ],
+    [  -6,  70,  70,  -6 ],
+    [  -4,  48,  92,  -8 ],
+    [  -2,  27, 110,  -7 ],
+    [  -1,  10, 124,  -5 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -6, 124,  11,  -1 ],
+    [  -8, 111,  28,  -3 ],
+    [  -8,  92,  49,  -5 ],
+    [  -7,  71,  71,  -7 ],
+    [  -5,  49,  92,  -8 ],
+    [  -3,  28, 111,  -8 ],
+    [  -1,  11, 124,  -6 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -6, 123,  12,  -1 ],
+    [  -9, 111,  29,  -3 ],
+    [  -9,  93,  50,  -6 ],
+    [  -8,  72,  72,  -8 ],
+    [  -6,  50,  93,  -9 ],
+    [  -3,  29, 111,  -9 ],
+    [  -1,  12, 123,  -6 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -7, 124,  12,  -1 ],
+    [ -10, 111,  30,  -3 ],
+    [ -10,  93,  51,  -6 ],
+    [  -9,  73,  73,  -9 ],
+    [  -6,  51,  93, -10 ],
+    [  -3,  30, 111, -10 ],
+    [  -1,  12, 124,  -7 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -7, 123,  13,  -1 ],
+    [ -11, 112,  31,  -4 ],
+    [ -11,  94,  52,  -7 ],
+    [ -10,  74,  74, -10 ],
+    [  -7,  52,  94, -11 ],
+    [  -4,  31, 112, -11 ],
+    [  -1,  13, 123,  -7 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -8, 124,  13,  -1 ],
+    [ -12, 112,  32,  -4 ],
+    [ -12,  94,  53,  -7 ],
+    [ -10,  74,  74, -10 ],
+    [  -7,  53,  94, -12 ],
+    [  -4,  32, 112, -12 ],
+    [  -1,  13, 124,  -8 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -9, 124,  14,  -1 ],
+    [ -13, 112,  33,  -4 ],
+    [ -13,  95,  54,  -8 ],
+    [ -11,  75,  75, -11 ],
+    [  -8,  54,  95, -13 ],
+    [  -4,  33, 112, -13 ],
+    [  -1,  14, 124,  -9 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -9, 123,  15,  -1 ],
+    [ -14, 113,  34,  -5 ],
+    [ -14,  95,  55,  -8 ],
+    [ -12,  76,  76, -12 ],
+    [  -8,  55,  95, -14 ],
+    [  -5,  34, 112, -13 ],
+    [  -1,  15, 123,  -9 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [ -10, 124,  15,  -1 ],
+    [ -14, 113,  34,  -5 ],
+    [ -15,  96,  56,  -9 ],
+    [ -13,  77,  77, -13 ],
+    [  -9,  56,  96, -15 ],
+    [  -5,  34, 113, -14 ],
+    [  -1,  15, 124, -10 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [ -10, 123,  16,  -1 ],
+    [ -15, 113,  35,  -5 ],
+    [ -16,  98,  56, -10 ],
+    [ -14,  78,  78, -14 ],
+    [ -10,  56,  98, -16 ],
+    [  -5,  35, 113, -15 ],
+    [  -1,  16, 123, -10 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [ -11, 124,  17,  -2 ],
+    [ -16, 113,  36,  -5 ],
+    [ -17,  98,  57, -10 ],
+    [ -14,  78,  78, -14 ],
+    [ -10,  57,  98, -17 ],
+    [  -5,  36, 113, -16 ],
+    [  -2,  17, 124, -11 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [ -12, 125,  17,  -2 ],
+    [ -17, 114,  37,  -6 ],
+    [ -18,  99,  58, -11 ],
+    [ -15,  79,  79, -15 ],
+    [ -11,  58,  99, -18 ],
+    [  -6,  37, 114, -17 ],
+    [  -2,  17, 125, -12 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [ -12, 124,  18,  -2 ],
+    [ -18, 114,  38,  -6 ],
+    [ -19,  99,  59, -11 ],
+    [ -16,  80,  80, -16 ],
+    [ -11,  59,  99, -19 ],
+    [  -6,  38, 114, -18 ],
+    [  -2,  18, 124, -12 ]
+  ], [
+    [   0, 128,   0,   0 ],
+    [  -4, 118,  16,  -2 ],
+    [  -7, 106,  34,  -5 ],
+    [  -8,  90,  53,  -7 ],
+    [  -8,  72,  72,  -8 ],
+    [  -7,  53,  90,  -8 ],
+    [  -5,  34, 106,  -7 ],
+    [  -2,  16, 118,  -4 ]
+  ]
+];
+
+pub const VP6_DEFAULT_SCAN_ORDER: [usize; 64] = [
+     0,  0,  1,  1,  1,  2,  2,  2,
+     2,  2,  2,  3,  3,  4,  4,  4,
+     5,  5,  5,  5,  6,  6,  7,  7,
+     7,  7,  7,  8,  8,  9,  9,  9,
+     9,  9,  9, 10, 10, 11, 11, 11,
+    11, 11, 11, 12, 12, 12, 12, 12,
+    12, 13, 13, 13, 13, 13, 14, 14,
+    14, 14, 15, 15, 15, 15, 15, 15
+];
+pub const VP6_INTERLACED_SCAN_ORDER: [usize; 64] = [
+     0,  1,  0,  1,  1,  2,  5,  3,
+     2,  2,  2,  2,  4,  7,  8, 10,
+     9,  7,  5,  4,  2,  3,  5,  6,
+     8,  9, 11, 12, 13, 12, 11, 10,
+     9,  7,  5,  4,  6,  7,  9, 11,
+    12, 12, 13, 13, 14, 12, 11,  9,
+     7,  9, 11, 12, 14, 14, 14, 15,
+    13, 11, 13, 15, 15, 15, 15, 15
+];
+
+pub const VP6_COEF_ADD_BITS: [u8; 6] = [ 1, 2, 3, 4, 5, 11 ];