4xm, timefilter: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 475 insertions, 423 deletions

diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c
index da682dfb00..8d7db98653 100644
--- a/libavcodec/4xm.c
+++ b/libavcodec/4xm.c
@@ -26,9 +26,9 @@
 
 #include "libavutil/intreadwrite.h"
 #include "avcodec.h"
+#include "bytestream.h"
 #include "dsputil.h"
 #include "get_bits.h"
-#include "bytestream.h"
 
 //#undef NDEBUG
 //#include <assert.h>
@@ -38,95 +38,96 @@
 
 #define CFRAME_BUFFER_COUNT 100
 
-static const uint8_t block_type_tab[2][4][8][2]={
- {
-  {   //{8,4,2}x{8,4,2}
-    { 0,1}, { 2,2}, { 6,3}, {14,4}, {30,5}, {31,5}, { 0,0}
-  },{ //{8,4}x1
-    { 0,1}, { 0,0}, { 2,2}, { 6,3}, {14,4}, {15,4}, { 0,0}
-  },{ //1x{8,4}
-    { 0,1}, { 2,2}, { 0,0}, { 6,3}, {14,4}, {15,4}, { 0,0}
-  },{ //1x2, 2x1
-    { 0,1}, { 0,0}, { 0,0}, { 2,2}, { 6,3}, {14,4}, {15,4}
-  }
- },{
-  {  //{8,4,2}x{8,4,2}
-    { 1,2}, { 4,3}, { 5,3}, {0,2}, {6,3}, {7,3}, {0,0}
-  },{//{8,4}x1
-    { 1,2}, { 0,0}, { 2,2}, {0,2}, {6,3}, {7,3}, {0,0}
-  },{//1x{8,4}
-    { 1,2}, { 2,2}, { 0,0}, {0,2}, {6,3}, {7,3}, {0,0}
-  },{//1x2, 2x1
-    { 1,2}, { 0,0}, { 0,0}, {0,2}, {2,2}, {6,3}, {7,3}
-  }
- }
+static const uint8_t block_type_tab[2][4][8][2] = {
+    {
+        {    // { 8, 4, 2 } x { 8, 4, 2}
+            { 0, 1 }, { 2, 2 }, { 6, 3 }, { 14, 4 }, { 30, 5 }, { 31, 5 }, { 0, 0 }
+        }, { // { 8, 4 } x 1
+            { 0, 1 }, { 0, 0 }, { 2, 2 }, { 6, 3 }, { 14, 4 }, { 15, 4 }, { 0, 0 }
+        }, { // 1 x { 8, 4 }
+            { 0, 1 }, { 2, 2 }, { 0, 0 }, { 6, 3 }, { 14, 4 }, { 15, 4 }, { 0, 0 }
+        }, { // 1 x 2, 2 x 1
+            { 0, 1 }, { 0, 0 }, { 0, 0 }, { 2, 2 }, { 6, 3 }, { 14, 4 }, { 15, 4 }
+        }
+    }, {
+        {   // { 8, 4, 2 } x { 8, 4, 2}
+            { 1, 2 }, { 4, 3 }, { 5, 3 }, { 0, 2 }, { 6, 3 }, { 7, 3 }, { 0, 0 }
+        }, {// { 8, 4 } x 1
+            { 1, 2 }, { 0, 0 }, { 2, 2 }, { 0, 2 }, { 6, 3 }, { 7, 3 }, { 0, 0 }
+        }, {// 1 x { 8, 4 }
+            { 1, 2 }, { 2, 2 }, { 0, 0 }, { 0, 2 }, { 6, 3 }, { 7, 3 }, { 0, 0 }
+        }, {// 1 x 2, 2 x 1
+            { 1, 2 }, { 0, 0 }, { 0, 0 }, { 0, 2 }, { 2, 2 }, { 6, 3 }, { 7, 3 }
+      }
+    }
 };
 
-static const uint8_t size2index[4][4]={
-  {-1, 3, 1, 1},
-  { 3, 0, 0, 0},
-  { 2, 0, 0, 0},
-  { 2, 0, 0, 0},
+static const uint8_t size2index[4][4] = {
+    { -1, 3, 1, 1 },
+    {  3, 0, 0, 0 },
+    {  2, 0, 0, 0 },
+    {  2, 0, 0, 0 },
 };
 
-static const int8_t mv[256][2]={
-{  0,  0},{  0, -1},{ -1,  0},{  1,  0},{  0,  1},{ -1, -1},{  1, -1},{ -1,  1},
-{  1,  1},{  0, -2},{ -2,  0},{  2,  0},{  0,  2},{ -1, -2},{  1, -2},{ -2, -1},
-{  2, -1},{ -2,  1},{  2,  1},{ -1,  2},{  1,  2},{ -2, -2},{  2, -2},{ -2,  2},
-{  2,  2},{  0, -3},{ -3,  0},{  3,  0},{  0,  3},{ -1, -3},{  1, -3},{ -3, -1},
-{  3, -1},{ -3,  1},{  3,  1},{ -1,  3},{  1,  3},{ -2, -3},{  2, -3},{ -3, -2},
-{  3, -2},{ -3,  2},{  3,  2},{ -2,  3},{  2,  3},{  0, -4},{ -4,  0},{  4,  0},
-{  0,  4},{ -1, -4},{  1, -4},{ -4, -1},{  4, -1},{  4,  1},{ -1,  4},{  1,  4},
-{ -3, -3},{ -3,  3},{  3,  3},{ -2, -4},{ -4, -2},{  4, -2},{ -4,  2},{ -2,  4},
-{  2,  4},{ -3, -4},{  3, -4},{  4, -3},{ -5,  0},{ -4,  3},{ -3,  4},{  3,  4},
-{ -1, -5},{ -5, -1},{ -5,  1},{ -1,  5},{ -2, -5},{  2, -5},{  5, -2},{  5,  2},
-{ -4, -4},{ -4,  4},{ -3, -5},{ -5, -3},{ -5,  3},{  3,  5},{ -6,  0},{  0,  6},
-{ -6, -1},{ -6,  1},{  1,  6},{  2, -6},{ -6,  2},{  2,  6},{ -5, -4},{  5,  4},
-{  4,  5},{ -6, -3},{  6,  3},{ -7,  0},{ -1, -7},{  5, -5},{ -7,  1},{ -1,  7},
-{  4, -6},{  6,  4},{ -2, -7},{ -7,  2},{ -3, -7},{  7, -3},{  3,  7},{  6, -5},
-{  0, -8},{ -1, -8},{ -7, -4},{ -8,  1},{  4,  7},{  2, -8},{ -2,  8},{  6,  6},
-{ -8,  3},{  5, -7},{ -5,  7},{  8, -4},{  0, -9},{ -9, -1},{  1,  9},{  7, -6},
-{ -7,  6},{ -5, -8},{ -5,  8},{ -9,  3},{  9, -4},{  7, -7},{  8, -6},{  6,  8},
-{ 10,  1},{-10,  2},{  9, -5},{ 10, -3},{ -8, -7},{-10, -4},{  6, -9},{-11,  0},
-{ 11,  1},{-11, -2},{ -2, 11},{  7, -9},{ -7,  9},{ 10,  6},{ -4, 11},{  8, -9},
-{  8,  9},{  5, 11},{  7,-10},{ 12, -3},{ 11,  6},{ -9, -9},{  8, 10},{  5, 12},
-{-11,  7},{ 13,  2},{  6,-12},{ 10,  9},{-11,  8},{ -7, 12},{  0, 14},{ 14, -2},
-{ -9, 11},{ -6, 13},{-14, -4},{ -5,-14},{  5, 14},{-15, -1},{-14, -6},{  3,-15},
-{ 11,-11},{ -7, 14},{ -5, 15},{  8,-14},{ 15,  6},{  3, 16},{  7,-15},{-16,  5},
-{  0, 17},{-16, -6},{-10, 14},{-16,  7},{ 12, 13},{-16,  8},{-17,  6},{-18,  3},
-{ -7, 17},{ 15, 11},{ 16, 10},{  2,-19},{  3,-19},{-11,-16},{-18,  8},{-19, -6},
-{  2,-20},{-17,-11},{-10,-18},{  8, 19},{-21, -1},{-20,  7},{ -4, 21},{ 21,  5},
-{ 15, 16},{  2,-22},{-10,-20},{-22,  5},{ 20,-11},{ -7,-22},{-12, 20},{ 23, -5},
-{ 13,-20},{ 24, -2},{-15, 19},{-11, 22},{ 16, 19},{ 23,-10},{-18,-18},{ -9,-24},
-{ 24,-10},{ -3, 26},{-23, 13},{-18,-20},{ 17, 21},{ -4, 27},{ 27,  6},{  1,-28},
-{-11, 26},{-17,-23},{  7, 28},{ 11,-27},{ 29,  5},{-23,-19},{-28,-11},{-21, 22},
-{-30,  7},{-17, 26},{-27, 16},{ 13, 29},{ 19,-26},{ 10,-31},{-14,-30},{ 20,-27},
-{-29, 18},{-16,-31},{-28,-22},{ 21,-30},{-25, 28},{ 26,-29},{ 25,-32},{-32,-32}
+static const int8_t mv[256][2] = {
+    {   0,   0 }, {   0,  -1 }, {  -1,   0 }, {   1,   0 }, {   0,   1 }, {  -1,  -1 }, {   1,  -1 }, {  -1,   1 },
+    {   1,   1 }, {   0,  -2 }, {  -2,   0 }, {   2,   0 }, {   0,   2 }, {  -1,  -2 }, {   1,  -2 }, {  -2,  -1 },
+    {   2,  -1 }, {  -2,   1 }, {   2,   1 }, {  -1,   2 }, {   1,   2 }, {  -2,  -2 }, {   2,  -2 }, {  -2,   2 },
+    {   2,   2 }, {   0,  -3 }, {  -3,   0 }, {   3,   0 }, {   0,   3 }, {  -1,  -3 }, {   1,  -3 }, {  -3,  -1 },
+    {   3,  -1 }, {  -3,   1 }, {   3,   1 }, {  -1,   3 }, {   1,   3 }, {  -2,  -3 }, {   2,  -3 }, {  -3,  -2 },
+    {   3,  -2 }, {  -3,   2 }, {   3,   2 }, {  -2,   3 }, {   2,   3 }, {   0,  -4 }, {  -4,   0 }, {   4,   0 },
+    {   0,   4 }, {  -1,  -4 }, {   1,  -4 }, {  -4,  -1 }, {   4,  -1 }, {   4,   1 }, {  -1,   4 }, {   1,   4 },
+    {  -3,  -3 }, {  -3,   3 }, {   3,   3 }, {  -2,  -4 }, {  -4,  -2 }, {   4,  -2 }, {  -4,   2 }, {  -2,   4 },
+    {   2,   4 }, {  -3,  -4 }, {   3,  -4 }, {   4,  -3 }, {  -5,   0 }, {  -4,   3 }, {  -3,   4 }, {   3,   4 },
+    {  -1,  -5 }, {  -5,  -1 }, {  -5,   1 }, {  -1,   5 }, {  -2,  -5 }, {   2,  -5 }, {   5,  -2 }, {   5,   2 },
+    {  -4,  -4 }, {  -4,   4 }, {  -3,  -5 }, {  -5,  -3 }, {  -5,   3 }, {   3,   5 }, {  -6,   0 }, {   0,   6 },
+    {  -6,  -1 }, {  -6,   1 }, {   1,   6 }, {   2,  -6 }, {  -6,   2 }, {   2,   6 }, {  -5,  -4 }, {   5,   4 },
+    {   4,   5 }, {  -6,  -3 }, {   6,   3 }, {  -7,   0 }, {  -1,  -7 }, {   5,  -5 }, {  -7,   1 }, {  -1,   7 },
+    {   4,  -6 }, {   6,   4 }, {  -2,  -7 }, {  -7,   2 }, {  -3,  -7 }, {   7,  -3 }, {   3,   7 }, {   6,  -5 },
+    {   0,  -8 }, {  -1,  -8 }, {  -7,  -4 }, {  -8,   1 }, {   4,   7 }, {   2,  -8 }, {  -2,   8 }, {   6,   6 },
+    {  -8,   3 }, {   5,  -7 }, {  -5,   7 }, {   8,  -4 }, {   0,  -9 }, {  -9,  -1 }, {   1,   9 }, {   7,  -6 },
+    {  -7,   6 }, {  -5,  -8 }, {  -5,   8 }, {  -9,   3 }, {   9,  -4 }, {   7,  -7 }, {   8,  -6 }, {   6,   8 },
+    {  10,   1 }, { -10,   2 }, {   9,  -5 }, {  10,  -3 }, {  -8,  -7 }, { -10,  -4 }, {   6,  -9 }, { -11,   0 },
+    {  11,   1 }, { -11,  -2 }, {  -2,  11 }, {   7,  -9 }, {  -7,   9 }, {  10,   6 }, {  -4,  11 }, {   8,  -9 },
+    {   8,   9 }, {   5,  11 }, {   7, -10 }, {  12,  -3 }, {  11,   6 }, {  -9,  -9 }, {   8,  10 }, {   5,  12 },
+    { -11,   7 }, {  13,   2 }, {   6, -12 }, {  10,   9 }, { -11,   8 }, {  -7,  12 }, {   0,  14 }, {  14,  -2 },
+    {  -9,  11 }, {  -6,  13 }, { -14,  -4 }, {  -5, -14 }, {   5,  14 }, { -15,  -1 }, { -14,  -6 }, {   3, -15 },
+    {  11, -11 }, {  -7,  14 }, {  -5,  15 }, {   8, -14 }, {  15,   6 }, {   3,  16 }, {   7, -15 }, { -16,   5 },
+    {   0,  17 }, { -16,  -6 }, { -10,  14 }, { -16,   7 }, {  12,  13 }, { -16,   8 }, { -17,   6 }, { -18,   3 },
+    {  -7,  17 }, {  15,  11 }, {  16,  10 }, {   2, -19 }, {   3, -19 }, { -11, -16 }, { -18,   8 }, { -19,  -6 },
+    {   2, -20 }, { -17, -11 }, { -10, -18 }, {   8,  19 }, { -21,  -1 }, { -20,   7 }, {  -4,  21 }, {  21,   5 },
+    {  15,  16 }, {   2, -22 }, { -10, -20 }, { -22,   5 }, {  20, -11 }, {  -7, -22 }, { -12,  20 }, {  23,  -5 },
+    {  13, -20 }, {  24,  -2 }, { -15,  19 }, { -11,  22 }, {  16,  19 }, {  23, -10 }, { -18, -18 }, {  -9, -24 },
+    {  24, -10 }, {  -3,  26 }, { -23,  13 }, { -18, -20 }, {  17,  21 }, {  -4,  27 }, {  27,   6 }, {   1, -28 },
+    { -11,  26 }, { -17, -23 }, {   7,  28 }, {  11, -27 }, {  29,   5 }, { -23, -19 }, { -28, -11 }, { -21,  22 },
+    { -30,   7 }, { -17,  26 }, { -27,  16 }, {  13,  29 }, {  19, -26 }, {  10, -31 }, { -14, -30 }, {  20, -27 },
+    { -29,  18 }, { -16, -31 }, { -28, -22 }, {  21, -30 }, { -25,  28 }, {  26, -29 }, {  25, -32 }, { -32, -32 }
 };
 
-// this is simply the scaled down elementwise product of the standard jpeg quantizer table and the AAN premul table
-static const uint8_t dequant_table[64]={
- 16, 15, 13, 19, 24, 31, 28, 17,
- 17, 23, 25, 31, 36, 63, 45, 21,
- 18, 24, 27, 37, 52, 59, 49, 20,
- 16, 28, 34, 40, 60, 80, 51, 20,
- 18, 31, 48, 66, 68, 86, 56, 21,
- 19, 38, 56, 59, 64, 64, 48, 20,
- 27, 48, 55, 55, 56, 51, 35, 15,
- 20, 35, 34, 32, 31, 22, 15,  8,
+/* This is simply the scaled down elementwise product of the standard JPEG
+ * quantizer table and the AAN premul table. */
+static const uint8_t dequant_table[64] = {
+    16, 15, 13, 19, 24, 31, 28, 17,
+    17, 23, 25, 31, 36, 63, 45, 21,
+    18, 24, 27, 37, 52, 59, 49, 20,
+    16, 28, 34, 40, 60, 80, 51, 20,
+    18, 31, 48, 66, 68, 86, 56, 21,
+    19, 38, 56, 59, 64, 64, 48, 20,
+    27, 48, 55, 55, 56, 51, 35, 15,
+    20, 35, 34, 32, 31, 22, 15,  8,
 };
 
 static VLC block_type_vlc[2][4];
 
 
-typedef struct CFrameBuffer{
+typedef struct CFrameBuffer {
     unsigned int allocated_size;
     unsigned int size;
     int id;
     uint8_t *data;
-}CFrameBuffer;
+} CFrameBuffer;
 
-typedef struct FourXContext{
+typedef struct FourXContext {
     AVCodecContext *avctx;
     DSPContext dsp;
     AVFrame current_picture, last_picture;
@@ -150,54 +151,55 @@ typedef struct FourXContext{
 #define FIX_1_847759065 121095
 #define FIX_2_613125930 171254
 
-#define MULTIPLY(var,const)  (((var)*(const)) >> 16)
+#define MULTIPLY(var, const) (((var) * (const)) >> 16)
 
-static void idct(DCTELEM block[64]){
+static void idct(DCTELEM block[64])
+{
     int tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
     int tmp10, tmp11, tmp12, tmp13;
     int z5, z10, z11, z12, z13;
     int i;
     int temp[64];
 
-    for(i=0; i<8; i++){
-        tmp10 = block[8*0 + i] + block[8*4 + i];
-        tmp11 = block[8*0 + i] - block[8*4 + i];
+    for (i = 0; i < 8; i++) {
+        tmp10 = block[8 * 0 + i] + block[8 * 4 + i];
+        tmp11 = block[8 * 0 + i] - block[8 * 4 + i];
 
-        tmp13 =          block[8*2 + i] + block[8*6 + i];
-        tmp12 = MULTIPLY(block[8*2 + i] - block[8*6 + i], FIX_1_414213562) - tmp13;
+        tmp13 = block[8 * 2 + i] + block[8 * 6 + i];
+        tmp12 = MULTIPLY(block[8 * 2 + i] - block[8 * 6 + i], FIX_1_414213562) - tmp13;
 
         tmp0 = tmp10 + tmp13;
         tmp3 = tmp10 - tmp13;
         tmp1 = tmp11 + tmp12;
         tmp2 = tmp11 - tmp12;
 
-        z13 = block[8*5 + i] + block[8*3 + i];
-        z10 = block[8*5 + i] - block[8*3 + i];
-        z11 = block[8*1 + i] + block[8*7 + i];
-        z12 = block[8*1 + i] - block[8*7 + i];
+        z13 = block[8 * 5 + i] + block[8 * 3 + i];
+        z10 = block[8 * 5 + i] - block[8 * 3 + i];
+        z11 = block[8 * 1 + i] + block[8 * 7 + i];
+        z12 = block[8 * 1 + i] - block[8 * 7 + i];
 
         tmp7  =          z11 + z13;
         tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562);
 
         z5    = MULTIPLY(z10 + z12, FIX_1_847759065);
-        tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5;
-        tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5;
+        tmp10 = MULTIPLY(z12,  FIX_1_082392200) - z5;
+        tmp12 = MULTIPLY(z10, -FIX_2_613125930) + z5;
 
         tmp6 = tmp12 - tmp7;
         tmp5 = tmp11 - tmp6;
         tmp4 = tmp10 + tmp5;
 
-        temp[8*0 + i] = tmp0 + tmp7;
-        temp[8*7 + i] = tmp0 - tmp7;
-        temp[8*1 + i] = tmp1 + tmp6;
-        temp[8*6 + i] = tmp1 - tmp6;
-        temp[8*2 + i] = tmp2 + tmp5;
-        temp[8*5 + i] = tmp2 - tmp5;
-        temp[8*4 + i] = tmp3 + tmp4;
-        temp[8*3 + i] = tmp3 - tmp4;
+        temp[8 * 0 + i] = tmp0 + tmp7;
+        temp[8 * 7 + i] = tmp0 - tmp7;
+        temp[8 * 1 + i] = tmp1 + tmp6;
+        temp[8 * 6 + i] = tmp1 - tmp6;
+        temp[8 * 2 + i] = tmp2 + tmp5;
+        temp[8 * 5 + i] = tmp2 - tmp5;
+        temp[8 * 4 + i] = tmp3 + tmp4;
+        temp[8 * 3 + i] = tmp3 - tmp4;
     }
 
-    for(i=0; i<8*8; i+=8){
+    for (i = 0; i < 8 * 8; i += 8) {
         tmp10 = temp[0 + i] + temp[4 + i];
         tmp11 = temp[0 + i] - temp[4 + i];
 
@@ -214,207 +216,228 @@ static void idct(DCTELEM block[64]){
         z11 = temp[1 + i] + temp[7 + i];
         z12 = temp[1 + i] - temp[7 + i];
 
-        tmp7 = z11 + z13;
+        tmp7  = z11 + z13;
         tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562);
 
-        z5 = MULTIPLY(z10 + z12, FIX_1_847759065);
-        tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5;
-        tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5;
+        z5    = MULTIPLY(z10 + z12, FIX_1_847759065);
+        tmp10 = MULTIPLY(z12,  FIX_1_082392200) - z5;
+        tmp12 = MULTIPLY(z10, -FIX_2_613125930) + z5;
 
         tmp6 = tmp12 - tmp7;
         tmp5 = tmp11 - tmp6;
         tmp4 = tmp10 + tmp5;
 
-        block[0 + i] = (tmp0 + tmp7)>>6;
-        block[7 + i] = (tmp0 - tmp7)>>6;
-        block[1 + i] = (tmp1 + tmp6)>>6;
-        block[6 + i] = (tmp1 - tmp6)>>6;
-        block[2 + i] = (tmp2 + tmp5)>>6;
-        block[5 + i] = (tmp2 - tmp5)>>6;
-        block[4 + i] = (tmp3 + tmp4)>>6;
-        block[3 + i] = (tmp3 - tmp4)>>6;
+        block[0 + i] = (tmp0 + tmp7) >> 6;
+        block[7 + i] = (tmp0 - tmp7) >> 6;
+        block[1 + i] = (tmp1 + tmp6) >> 6;
+        block[6 + i] = (tmp1 - tmp6) >> 6;
+        block[2 + i] = (tmp2 + tmp5) >> 6;
+        block[5 + i] = (tmp2 - tmp5) >> 6;
+        block[4 + i] = (tmp3 + tmp4) >> 6;
+        block[3 + i] = (tmp3 - tmp4) >> 6;
     }
 }
 
-static av_cold void init_vlcs(FourXContext *f){
+static av_cold void init_vlcs(FourXContext *f)
+{
     static VLC_TYPE table[8][32][2];
     int i;
 
-    for(i=0; i<8; i++){
-        block_type_vlc[0][i].table= table[i];
-        block_type_vlc[0][i].table_allocated= 32;
+    for (i = 0; i < 8; i++) {
+        block_type_vlc[0][i].table           = table[i];
+        block_type_vlc[0][i].table_allocated = 32;
         init_vlc(&block_type_vlc[0][i], BLOCK_TYPE_VLC_BITS, 7,
                  &block_type_tab[0][i][0][1], 2, 1,
                  &block_type_tab[0][i][0][0], 2, 1, INIT_VLC_USE_NEW_STATIC);
     }
 }
 
-static void init_mv(FourXContext *f){
+static void init_mv(FourXContext *f)
+{
     int i;
 
-    for(i=0; i<256; i++){
-        if(f->version>1)
-            f->mv[i] = mv[i][0]   + mv[i][1]  *f->current_picture.linesize[0]/2;
+    for (i = 0; i < 256; i++) {
+        if (f->version > 1)
+            f->mv[i] = mv[i][0] + mv[i][1] * f->current_picture.linesize[0] / 2;
         else
-            f->mv[i] = (i&15) - 8 + ((i>>4)-8)*f->current_picture.linesize[0]/2;
+            f->mv[i] = (i & 15) - 8 + ((i >> 4) - 8) * f->current_picture.linesize[0] / 2;
     }
 }
 
 #if HAVE_BIGENDIAN
-#define LE_CENTRIC_MUL(dst, src, scale, dc) \
-    { \
+#define LE_CENTRIC_MUL(dst, src, scale, dc)             \
+    {                                                   \
         unsigned tmpval = AV_RN32(src);                 \
-        tmpval = (tmpval <<  16) | (tmpval >>  16);     \
+        tmpval = (tmpval << 16) | (tmpval >> 16);       \
         tmpval = tmpval * (scale) + (dc);               \
-        tmpval = (tmpval <<  16) | (tmpval >>  16);     \
+        tmpval = (tmpval << 16) | (tmpval >> 16);       \
         AV_WN32A(dst, tmpval);                          \
     }
 #else
-#define LE_CENTRIC_MUL(dst, src, scale, dc) \
-    { \
+#define LE_CENTRIC_MUL(dst, src, scale, dc)              \
+    {                                                    \
         unsigned tmpval = AV_RN32(src) * (scale) + (dc); \
         AV_WN32A(dst, tmpval);                           \
     }
 #endif
 
-static inline void mcdc(uint16_t *dst, uint16_t *src, int log2w, int h, int stride, int scale, unsigned dc){
-   int i;
-   dc*= 0x10001;
-
-   switch(log2w){
-   case 0:
-        for(i=0; i<h; i++){
-            dst[0] = scale*src[0] + dc;
-            if(scale) src += stride;
+static inline void mcdc(uint16_t *dst, uint16_t *src, int log2w,
+                        int h, int stride, int scale, unsigned dc)
+{
+    int i;
+    dc *= 0x10001;
+
+    switch (log2w) {
+    case 0:
+        for (i = 0; i < h; i++) {
+            dst[0] = scale * src[0] + dc;
+            if (scale)
+                src += stride;
             dst += stride;
         }
         break;
     case 1:
-        for(i=0; i<h; i++){
+        for (i = 0; i < h; i++) {
             LE_CENTRIC_MUL(dst, src, scale, dc);
-            if(scale) src += stride;
+            if (scale)
+                src += stride;
             dst += stride;
         }
         break;
     case 2:
-        for(i=0; i<h; i++){
-            LE_CENTRIC_MUL(dst,     src,     scale, dc);
+        for (i = 0; i < h; i++) {
+            LE_CENTRIC_MUL(dst, src, scale, dc);
             LE_CENTRIC_MUL(dst + 2, src + 2, scale, dc);
-            if(scale) src += stride;
+            if (scale)
+                src += stride;
             dst += stride;
         }
         break;
     case 3:
-        for(i=0; i<h; i++){
+        for (i = 0; i < h; i++) {
             LE_CENTRIC_MUL(dst,     src,     scale, dc);
             LE_CENTRIC_MUL(dst + 2, src + 2, scale, dc);
             LE_CENTRIC_MUL(dst + 4, src + 4, scale, dc);
             LE_CENTRIC_MUL(dst + 6, src + 6, scale, dc);
-            if(scale) src += stride;
+            if (scale)
+                src += stride;
             dst += stride;
         }
         break;
-    default: assert(0);
+    default:
+        assert(0);
     }
 }
 
-static void decode_p_block(FourXContext *f, uint16_t *dst, uint16_t *src, int log2w, int log2h, int stride){
-    const int index= size2index[log2h][log2w];
-    const int h= 1<<log2h;
-    int code= get_vlc2(&f->gb, block_type_vlc[1-(f->version>1)][index].table, BLOCK_TYPE_VLC_BITS, 1);
-    uint16_t *start= (uint16_t*)f->last_picture.data[0];
-    uint16_t *end= start + stride*(f->avctx->height-h+1) - (1<<log2w);
+static void decode_p_block(FourXContext *f, uint16_t *dst, uint16_t *src,
+                           int log2w, int log2h, int stride)
+{
+    const int index = size2index[log2h][log2w];
+    const int h     = 1 << log2h;
+    int code        = get_vlc2(&f->gb,
+                               block_type_vlc[1 - (f->version > 1)][index].table,
+                               BLOCK_TYPE_VLC_BITS, 1);
+    uint16_t *start = (uint16_t *)f->last_picture.data[0];
+    uint16_t *end   = start + stride * (f->avctx->height - h + 1) - (1 << log2w);
 
-    assert(code>=0 && code<=6);
+    assert(code >= 0 && code <= 6);
 
-    if(code == 0){
+    if (code == 0) {
         src += f->mv[bytestream2_get_byte(&f->g)];
-        if(start > src || src > end){
+        if (start > src || src > end) {
             av_log(f->avctx, AV_LOG_ERROR, "mv out of pic\n");
             return;
         }
         mcdc(dst, src, log2w, h, stride, 1, 0);
-    }else if(code == 1){
+    } else if (code == 1) {
         log2h--;
-        decode_p_block(f, dst                  , src                  , log2w, log2h, stride);
-        decode_p_block(f, dst + (stride<<log2h), src + (stride<<log2h), log2w, log2h, stride);
-    }else if(code == 2){
+        decode_p_block(f, dst, src, log2w, log2h, stride);
+        decode_p_block(f, dst + (stride << log2h),
+                          src + (stride << log2h), log2w, log2h, stride);
+    } else if (code == 2) {
         log2w--;
-        decode_p_block(f, dst             , src             , log2w, log2h, stride);
-        decode_p_block(f, dst + (1<<log2w), src + (1<<log2w), log2w, log2h, stride);
-    }else if(code == 3 && f->version<2){
+        decode_p_block(f, dst , src, log2w, log2h, stride);
+        decode_p_block(f, dst + (1 << log2w),
+                          src + (1 << log2w), log2w, log2h, stride);
+    } else if (code == 3 && f->version < 2) {
         mcdc(dst, src, log2w, h, stride, 1, 0);
-    }else if(code == 4){
+    } else if (code == 4) {
         src += f->mv[bytestream2_get_byte(&f->g)];
-        if(start > src || src > end){
+        if (start > src || src > end) {
             av_log(f->avctx, AV_LOG_ERROR, "mv out of pic\n");
             return;
         }
         mcdc(dst, src, log2w, h, stride, 1, bytestream2_get_le16(&f->g2));
-    }else if(code == 5){
+    } else if (code == 5) {
         mcdc(dst, src, log2w, h, stride, 0, bytestream2_get_le16(&f->g2));
-    }else if(code == 6){
-        if(log2w){
-            dst[0] = bytestream2_get_le16(&f->g2);
-            dst[1] = bytestream2_get_le16(&f->g2);
-        }else{
-            dst[0     ] = bytestream2_get_le16(&f->g2);
+    } else if (code == 6) {
+        if (log2w) {
+            dst[0]      = bytestream2_get_le16(&f->g2);
+            dst[1]      = bytestream2_get_le16(&f->g2);
+        } else {
+            dst[0]      = bytestream2_get_le16(&f->g2);
             dst[stride] = bytestream2_get_le16(&f->g2);
         }
     }
 }
 
-static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){
+static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length)
+{
     int x, y;
-    const int width= f->avctx->width;
-    const int height= f->avctx->height;
-    uint16_t *src= (uint16_t*)f->last_picture.data[0];
-    uint16_t *dst= (uint16_t*)f->current_picture.data[0];
-    const int stride= f->current_picture.linesize[0]>>1;
-    unsigned int bitstream_size, bytestream_size, wordstream_size, extra, bytestream_offset, wordstream_offset;
-
-    if(f->version>1){
-        extra=20;
-        bitstream_size= AV_RL32(buf+8);
-        wordstream_size= AV_RL32(buf+12);
-        bytestream_size= AV_RL32(buf+16);
-    }else{
-        extra=0;
-        bitstream_size = AV_RL16(buf-4);
-        wordstream_size= AV_RL16(buf-2);
-        bytestream_size= FFMAX(length - bitstream_size - wordstream_size, 0);
+    const int width  = f->avctx->width;
+    const int height = f->avctx->height;
+    uint16_t *src    = (uint16_t *)f->last_picture.data[0];
+    uint16_t *dst    = (uint16_t *)f->current_picture.data[0];
+    const int stride =             f->current_picture.linesize[0] >> 1;
+    unsigned int bitstream_size, bytestream_size, wordstream_size, extra,
+                 bytestream_offset, wordstream_offset;
+
+    if (f->version > 1) {
+        extra           = 20;
+        bitstream_size  = AV_RL32(buf + 8);
+        wordstream_size = AV_RL32(buf + 12);
+        bytestream_size = AV_RL32(buf + 16);
+    } else {
+        extra           = 0;
+        bitstream_size  = AV_RL16(buf - 4);
+        wordstream_size = AV_RL16(buf - 2);
+        bytestream_size = FFMAX(length - bitstream_size - wordstream_size, 0);
     }
 
-    if(bitstream_size+ bytestream_size+ wordstream_size + extra != length
-       || bitstream_size  > (1<<26)
-       || bytestream_size > (1<<26)
-       || wordstream_size > (1<<26)
-       ){
-        av_log(f->avctx, AV_LOG_ERROR, "lengths %d %d %d %d\n", bitstream_size, bytestream_size, wordstream_size,
-        bitstream_size+ bytestream_size+ wordstream_size - length);
+    if (bitstream_size + bytestream_size + wordstream_size + extra != length
+        || bitstream_size  > (1 << 26)
+        || bytestream_size > (1 << 26)
+        || wordstream_size > (1 << 26)) {
+        av_log(f->avctx, AV_LOG_ERROR, "lengths %d %d %d %d\n",
+               bitstream_size, bytestream_size, wordstream_size,
+               bitstream_size + bytestream_size + wordstream_size - length);
         return -1;
     }
 
-    av_fast_malloc(&f->bitstream_buffer, &f->bitstream_buffer_size, bitstream_size + FF_INPUT_BUFFER_PADDING_SIZE);
+    av_fast_malloc(&f->bitstream_buffer, &f->bitstream_buffer_size,
+                   bitstream_size + FF_INPUT_BUFFER_PADDING_SIZE);
     if (!f->bitstream_buffer)
         return AVERROR(ENOMEM);
-    f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)(buf + extra), bitstream_size/4);
-    memset((uint8_t*)f->bitstream_buffer + bitstream_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
-    init_get_bits(&f->gb, f->bitstream_buffer, 8*bitstream_size);
+    f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)(buf + extra),
+                     bitstream_size / 4);
+    memset((uint8_t*)f->bitstream_buffer + bitstream_size,
+           0, FF_INPUT_BUFFER_PADDING_SIZE);
+    init_get_bits(&f->gb, f->bitstream_buffer, 8 * bitstream_size);
 
     wordstream_offset = extra + bitstream_size;
     bytestream_offset = extra + bitstream_size + wordstream_size;
-    bytestream2_init(&f->g2, buf + wordstream_offset, length - wordstream_offset);
-    bytestream2_init(&f->g,  buf + bytestream_offset, length - bytestream_offset);
+    bytestream2_init(&f->g2, buf + wordstream_offset,
+                     length - wordstream_offset);
+    bytestream2_init(&f->g, buf + bytestream_offset,
+                     length - bytestream_offset);
 
     init_mv(f);
 
-    for(y=0; y<height; y+=8){
-        for(x=0; x<width; x+=8){
+    for (y = 0; y < height; y += 8) {
+        for (x = 0; x < width; x += 8)
             decode_p_block(f, dst + x, src + x, 3, 3, stride);
-        }
-        src += 8*stride;
-        dst += 8*stride;
+        src += 8 * stride;
+        dst += 8 * stride;
     }
 
     return 0;
@@ -424,24 +447,23 @@ static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){
  * decode block and dequantize.
  * Note this is almost identical to MJPEG.
  */
-static int decode_i_block(FourXContext *f, DCTELEM *block){
+static int decode_i_block(FourXContext *f, DCTELEM *block)
+{
     int code, i, j, level, val;
 
     /* DC coef */
     val = get_vlc2(&f->pre_gb, f->pre_vlc.table, ACDC_VLC_BITS, 3);
-    if (val>>4){
+    if (val >> 4)
         av_log(f->avctx, AV_LOG_ERROR, "error dc run != 0\n");
-    }
 
-    if(val)
+    if (val)
         val = get_xbits(&f->gb, val);
 
-    val = val * dequant_table[0] + f->last_dc;
-    f->last_dc =
-    block[0] = val;
+    val        = val * dequant_table[0] + f->last_dc;
+    f->last_dc = block[0] = val;
     /* AC coefs */
     i = 1;
-    for(;;) {
+    for (;;) {
         code = get_vlc2(&f->pre_gb, f->pre_vlc.table, ACDC_VLC_BITS, 3);
 
         /* EOB */
@@ -451,13 +473,13 @@ static int decode_i_block(FourXContext *f, DCTELEM *block){
             i += 16;
         } else {
             level = get_xbits(&f->gb, code & 0xf);
-            i += code >> 4;
+            i    += code >> 4;
             if (i >= 64) {
                 av_log(f->avctx, AV_LOG_ERROR, "run %d oveflow\n", i);
                 return 0;
             }
 
-            j= ff_zigzag_direct[i];
+            j = ff_zigzag_direct[i];
             block[j] = level * dequant_table[j];
             i++;
             if (i >= 64)
@@ -468,185 +490,199 @@ static int decode_i_block(FourXContext *f, DCTELEM *block){
     return 0;
 }
 
-static inline void idct_put(FourXContext *f, int x, int y){
-    DCTELEM (*block)[64]= f->block;
-    int stride= f->current_picture.linesize[0]>>1;
+static inline void idct_put(FourXContext *f, int x, int y)
+{
+    DCTELEM (*block)[64] = f->block;
+    int stride           = f->current_picture.linesize[0] >> 1;
     int i;
     uint16_t *dst = ((uint16_t*)f->current_picture.data[0]) + y * stride + x;
 
-    for(i=0; i<4; i++){
-        block[i][0] += 0x80*8*8;
+    for (i = 0; i < 4; i++) {
+        block[i][0] += 0x80 * 8 * 8;
         idct(block[i]);
     }
 
-    if(!(f->avctx->flags&CODEC_FLAG_GRAY)){
-        for(i=4; i<6; i++) idct(block[i]);
+    if (!(f->avctx->flags & CODEC_FLAG_GRAY)) {
+        for (i = 4; i < 6; i++)
+            idct(block[i]);
     }
 
-/* Note transform is:
-y= ( 1b + 4g + 2r)/14
-cb=( 3b - 2g - 1r)/14
-cr=(-1b - 4g + 5r)/14
-*/
-    for(y=0; y<8; y++){
-        for(x=0; x<8; x++){
-            DCTELEM *temp= block[(x>>2) + 2*(y>>2)] + 2*(x&3) + 2*8*(y&3); //FIXME optimize
-            int cb= block[4][x + 8*y];
-            int cr= block[5][x + 8*y];
-            int cg= (cb + cr)>>1;
+    /* Note transform is:
+     * y  = ( 1b + 4g + 2r) / 14
+     * cb = ( 3b - 2g - 1r) / 14
+     * cr = (-1b - 4g + 5r) / 14 */
+    for (y = 0; y < 8; y++) {
+        for (x = 0; x < 8; x++) {
+            DCTELEM *temp = block[(x >> 2) + 2 * (y >> 2)] +
+                            2 * (x & 3) + 2 * 8 * (y & 3); // FIXME optimize
+            int cb = block[4][x + 8 * y];
+            int cr = block[5][x + 8 * y];
+            int cg = (cb + cr) >> 1;
             int y;
 
-            cb+=cb;
-
-            y = temp[0];
-            dst[0       ]= ((y+cb)>>3) + (((y-cg)&0xFC)<<3) + (((y+cr)&0xF8)<<8);
-            y = temp[1];
-            dst[1       ]= ((y+cb)>>3) + (((y-cg)&0xFC)<<3) + (((y+cr)&0xF8)<<8);
-            y = temp[8];
-            dst[  stride]= ((y+cb)>>3) + (((y-cg)&0xFC)<<3) + (((y+cr)&0xF8)<<8);
-            y = temp[9];
-            dst[1+stride]= ((y+cb)>>3) + (((y-cg)&0xFC)<<3) + (((y+cr)&0xF8)<<8);
-            dst += 2;
+            cb += cb;
+
+            y               = temp[0];
+            dst[0]          = ((y + cb) >> 3) + (((y - cg) & 0xFC) << 3) + (((y + cr) & 0xF8) << 8);
+            y               = temp[1];
+            dst[1]          = ((y + cb) >> 3) + (((y - cg) & 0xFC) << 3) + (((y + cr) & 0xF8) << 8);
+            y               = temp[8];
+            dst[stride]     = ((y + cb) >> 3) + (((y - cg) & 0xFC) << 3) + (((y + cr) & 0xF8) << 8);
+            y               = temp[9];
+            dst[1 + stride] = ((y + cb) >> 3) + (((y - cg) & 0xFC) << 3) + (((y + cr) & 0xF8) << 8);
+            dst            += 2;
         }
-        dst += 2*stride - 2*8;
+        dst += 2 * stride - 2 * 8;
     }
 }
 
-static int decode_i_mb(FourXContext *f){
+static int decode_i_mb(FourXContext *f)
+{
     int i;
 
     f->dsp.clear_blocks(f->block[0]);
 
-    for(i=0; i<6; i++){
-        if(decode_i_block(f, f->block[i]) < 0)
+    for (i = 0; i < 6; i++)
+        if (decode_i_block(f, f->block[i]) < 0)
             return -1;
-    }
 
     return 0;
 }
 
-static const uint8_t *read_huffman_tables(FourXContext *f, const uint8_t * const buf){
+static const uint8_t *read_huffman_tables(FourXContext *f,
+                                          const uint8_t * const buf)
+{
     int frequency[512];
     uint8_t flag[512];
     int up[512];
     uint8_t len_tab[257];
     int bits_tab[257];
     int start, end;
-    const uint8_t *ptr= buf;
+    const uint8_t *ptr = buf;
     int j;
 
     memset(frequency, 0, sizeof(frequency));
     memset(up, -1, sizeof(up));
 
-    start= *ptr++;
-    end= *ptr++;
-    for(;;){
+    start = *ptr++;
+    end   = *ptr++;
+    for (;;) {
         int i;
 
-        for(i=start; i<=end; i++){
-            frequency[i]= *ptr++;
-        }
-        start= *ptr++;
-        if(start==0) break;
+        for (i = start; i <= end; i++)
+            frequency[i] = *ptr++;
+        start = *ptr++;
+        if (start == 0)
+            break;
 
-        end= *ptr++;
+        end = *ptr++;
     }
-    frequency[256]=1;
+    frequency[256] = 1;
 
-    while((ptr - buf)&3) ptr++; // 4byte align
+    while ((ptr - buf) & 3)
+        ptr++; // 4byte align
 
-    for(j=257; j<512; j++){
-        int min_freq[2]= {256*256, 256*256};
-        int smallest[2]= {0, 0};
+    for (j = 257; j < 512; j++) {
+        int min_freq[2] = { 256 * 256, 256 * 256 };
+        int smallest[2] = { 0, 0 };
         int i;
-        for(i=0; i<j; i++){
-            if(frequency[i] == 0) continue;
-            if(frequency[i] < min_freq[1]){
-                if(frequency[i] < min_freq[0]){
-                    min_freq[1]= min_freq[0]; smallest[1]= smallest[0];
-                    min_freq[0]= frequency[i];smallest[0]= i;
-                }else{
-                    min_freq[1]= frequency[i];smallest[1]= i;
+        for (i = 0; i < j; i++) {
+            if (frequency[i] == 0)
+                continue;
+            if (frequency[i] < min_freq[1]) {
+                if (frequency[i] < min_freq[0]) {
+                    min_freq[1] = min_freq[0];
+                    smallest[1] = smallest[0];
+                    min_freq[0] = frequency[i];
+                    smallest[0] = i;
+                } else {
+                    min_freq[1] = frequency[i];
+                    smallest[1] = i;
                 }
             }
         }
-        if(min_freq[1] == 256*256) break;
-
-        frequency[j]= min_freq[0] + min_freq[1];
-        flag[ smallest[0] ]= 0;
-        flag[ smallest[1] ]= 1;
-        up[ smallest[0] ]=
-        up[ smallest[1] ]= j;
-        frequency[ smallest[0] ]= frequency[ smallest[1] ]= 0;
+        if (min_freq[1] == 256 * 256)
+            break;
+
+        frequency[j]           = min_freq[0] + min_freq[1];
+        flag[smallest[0]]      = 0;
+        flag[smallest[1]]      = 1;
+        up[smallest[0]]        =
+        up[smallest[1]]        = j;
+        frequency[smallest[0]] = frequency[smallest[1]] = 0;
     }
 
-    for(j=0; j<257; j++){
-        int node;
-        int len=0;
-        int bits=0;
+    for (j = 0; j < 257; j++) {
+        int node, len = 0, bits = 0;
 
-        for(node= j; up[node] != -1; node= up[node]){
-            bits += flag[node]<<len;
+        for (node = j; up[node] != -1; node = up[node]) {
+            bits += flag[node] << len;
             len++;
-            if(len > 31) av_log(f->avctx, AV_LOG_ERROR, "vlc length overflow\n"); //can this happen at all ?
+            if (len > 31)
+                // can this happen at all ?
+                av_log(f->avctx, AV_LOG_ERROR,
+                       "vlc length overflow\n");
         }
 
-        bits_tab[j]= bits;
-        len_tab[j]= len;
+        bits_tab[j] = bits;
+        len_tab[j]  = len;
     }
 
-    if (init_vlc(&f->pre_vlc, ACDC_VLC_BITS, 257,
-                 len_tab , 1, 1,
+    if (init_vlc(&f->pre_vlc, ACDC_VLC_BITS, 257, len_tab, 1, 1,
                  bits_tab, 4, 4, 0))
         return NULL;
 
     return ptr;
 }
 
-static int mix(int c0, int c1){
-    int blue = 2*(c0&0x001F) + (c1&0x001F);
-    int green= (2*(c0&0x03E0) + (c1&0x03E0))>>5;
-    int red  = 2*(c0>>10) + (c1>>10);
-    return red/3*1024 + green/3*32 + blue/3;
+static int mix(int c0, int c1)
+{
+    int blue  =  2 * (c0 & 0x001F) + (c1 & 0x001F);
+    int green = (2 * (c0 & 0x03E0) + (c1 & 0x03E0)) >> 5;
+    int red   =  2 * (c0 >> 10)    + (c1 >> 10);
+    return red / 3 * 1024 + green / 3 * 32 + blue / 3;
 }
 
-static int decode_i2_frame(FourXContext *f, const uint8_t *buf, int length){
+static int decode_i2_frame(FourXContext *f, const uint8_t *buf, int length)
+{
     int x, y, x2, y2;
-    const int width= f->avctx->width;
-    const int height= f->avctx->height;
-    const int mbs = (FFALIGN(width, 16) >> 4) * (FFALIGN(height, 16) >> 4);
-    uint16_t *dst= (uint16_t*)f->current_picture.data[0];
-    const int stride= f->current_picture.linesize[0]>>1;
+    const int width  = f->avctx->width;
+    const int height = f->avctx->height;
+    const int mbs    = (FFALIGN(width, 16) >> 4) * (FFALIGN(height, 16) >> 4);
+    uint16_t *dst    = (uint16_t*)f->current_picture.data[0];
+    const int stride =            f->current_picture.linesize[0]>>1;
     GetByteContext g3;
 
-    if(length < mbs * 8) {
+    if (length < mbs * 8) {
         av_log(f->avctx, AV_LOG_ERROR, "packet size too small\n");
         return AVERROR_INVALIDDATA;
     }
     bytestream2_init(&g3, buf, length);
 
-    for(y=0; y<height; y+=16){
-        for(x=0; x<width; x+=16){
+    for (y = 0; y < height; y += 16) {
+        for (x = 0; x < width; x += 16) {
             unsigned int color[4], bits;
             memset(color, 0, sizeof(color));
-//warning following is purely guessed ...
-            color[0]= bytestream2_get_le16u(&g3);
-            color[1]= bytestream2_get_le16u(&g3);
-
-            if(color[0]&0x8000) av_log(NULL, AV_LOG_ERROR, "unk bit 1\n");
-            if(color[1]&0x8000) av_log(NULL, AV_LOG_ERROR, "unk bit 2\n");
-
-            color[2]= mix(color[0], color[1]);
-            color[3]= mix(color[1], color[0]);
-
-            bits= bytestream2_get_le32u(&g3);
-            for(y2=0; y2<16; y2++){
-                for(x2=0; x2<16; x2++){
-                    int index= 2*(x2>>2) + 8*(y2>>2);
-                    dst[y2*stride+x2]= color[(bits>>index)&3];
+            // warning following is purely guessed ...
+            color[0] = bytestream2_get_le16u(&g3);
+            color[1] = bytestream2_get_le16u(&g3);
+
+            if (color[0] & 0x8000)
+                av_log(NULL, AV_LOG_ERROR, "unk bit 1\n");
+            if (color[1] & 0x8000)
+                av_log(NULL, AV_LOG_ERROR, "unk bit 2\n");
+
+            color[2] = mix(color[0], color[1]);
+            color[3] = mix(color[1], color[0]);
+
+            bits = bytestream2_get_le32u(&g3);
+            for (y2 = 0; y2 < 16; y2++) {
+                for (x2 = 0; x2 < 16; x2++) {
+                    int index = 2 * (x2 >> 2) + 8 * (y2 >> 2);
+                    dst[y2 * stride + x2] = color[(bits >> index) & 3];
                 }
             }
-            dst+=16;
+            dst += 16;
         }
         dst += 16 * stride - x;
     }
@@ -654,11 +690,12 @@ static int decode_i2_frame(FourXContext *f, const uint8_t *buf, int length){
     return 0;
 }
 
-static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length){
+static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length)
+{
     int x, y;
-    const int width= f->avctx->width;
-    const int height= f->avctx->height;
-    const unsigned int bitstream_size= AV_RL32(buf);
+    const int width  = f->avctx->width;
+    const int height = f->avctx->height;
+    const unsigned int bitstream_size = AV_RL32(buf);
     int token_count av_unused;
     unsigned int prestream_size;
     const uint8_t *prestream;
@@ -668,159 +705,169 @@ static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length){
         return AVERROR_INVALIDDATA;
     }
 
-    token_count    = AV_RL32(buf + bitstream_size + 8);
+    token_count    =     AV_RL32(buf + bitstream_size + 8);
     prestream_size = 4 * AV_RL32(buf + bitstream_size + 4);
-    prestream      = buf + bitstream_size + 12;
+    prestream      =             buf + bitstream_size + 12;
 
-    if(prestream_size + bitstream_size + 12 != length
-       || bitstream_size > (1<<26)
-       || prestream_size > (1<<26)){
-        av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d %d\n", prestream_size, bitstream_size, length);
+    if (prestream_size + bitstream_size + 12 != length
+        || bitstream_size > (1 << 26)
+        || prestream_size > (1 << 26)) {
+        av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d %d\n",
+               prestream_size, bitstream_size, length);
         return -1;
     }
 
-    prestream= read_huffman_tables(f, prestream);
+    prestream = read_huffman_tables(f, prestream);
 
-    init_get_bits(&f->gb, buf + 4, 8*bitstream_size);
+    init_get_bits(&f->gb, buf + 4, 8 * bitstream_size);
 
-    prestream_size= length + buf - prestream;
+    prestream_size = length + buf - prestream;
 
-    av_fast_malloc(&f->bitstream_buffer, &f->bitstream_buffer_size, prestream_size + FF_INPUT_BUFFER_PADDING_SIZE);
+    av_fast_malloc(&f->bitstream_buffer, &f->bitstream_buffer_size,
+                   prestream_size + FF_INPUT_BUFFER_PADDING_SIZE);
     if (!f->bitstream_buffer)
         return AVERROR(ENOMEM);
-    f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)prestream, prestream_size/4);
-    memset((uint8_t*)f->bitstream_buffer + prestream_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
-    init_get_bits(&f->pre_gb, f->bitstream_buffer, 8*prestream_size);
+    f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)prestream,
+                     prestream_size / 4);
+    memset((uint8_t*)f->bitstream_buffer + prestream_size,
+           0, FF_INPUT_BUFFER_PADDING_SIZE);
+    init_get_bits(&f->pre_gb, f->bitstream_buffer, 8 * prestream_size);
 
-    f->last_dc= 0*128*8*8;
+    f->last_dc = 0 * 128 * 8 * 8;
 
-    for(y=0; y<height; y+=16){
-        for(x=0; x<width; x+=16){
-            if(decode_i_mb(f) < 0)
+    for (y = 0; y < height; y += 16) {
+        for (x = 0; x < width; x += 16) {
+            if (decode_i_mb(f) < 0)
                 return -1;
 
             idct_put(f, x, y);
         }
     }
 
-    if(get_vlc2(&f->pre_gb, f->pre_vlc.table, ACDC_VLC_BITS, 3) != 256)
+    if (get_vlc2(&f->pre_gb, f->pre_vlc.table, ACDC_VLC_BITS, 3) != 256)
         av_log(f->avctx, AV_LOG_ERROR, "end mismatch\n");
 
     return 0;
 }
 
-static int decode_frame(AVCodecContext *avctx,
-                        void *data, int *data_size,
-                        AVPacket *avpkt)
+static int decode_frame(AVCodecContext *avctx, void *data,
+                        int *data_size, AVPacket *avpkt)
 {
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    FourXContext * const f = avctx->priv_data;
-    AVFrame *picture = data;
+    const uint8_t *buf    = avpkt->data;
+    int buf_size          = avpkt->size;
+    FourXContext *const f = avctx->priv_data;
+    AVFrame *picture      = data;
     AVFrame *p, temp;
     int i, frame_4cc, frame_size;
 
-    frame_4cc= AV_RL32(buf);
-    if(buf_size != AV_RL32(buf+4)+8 || buf_size < 20){
-        av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d\n", buf_size, AV_RL32(buf+4));
-    }
+    frame_4cc = AV_RL32(buf);
+    if (buf_size != AV_RL32(buf + 4) + 8 || buf_size < 20)
+        av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d\n",
+               buf_size, AV_RL32(buf + 4));
 
-    if(frame_4cc == AV_RL32("cfrm")){
-        int free_index=-1;
-        const int data_size= buf_size - 20;
-        const int id= AV_RL32(buf+12);
-        const int whole_size= AV_RL32(buf+16);
+    if (frame_4cc == AV_RL32("cfrm")) {
+        int free_index       = -1;
+        const int data_size  = buf_size - 20;
+        const int id         = AV_RL32(buf + 12);
+        const int whole_size = AV_RL32(buf + 16);
         CFrameBuffer *cfrm;
 
-        for(i=0; i<CFRAME_BUFFER_COUNT; i++){
-            if(f->cfrm[i].id && f->cfrm[i].id < avctx->frame_number)
-                av_log(f->avctx, AV_LOG_ERROR, "lost c frame %d\n", f->cfrm[i].id);
-        }
+        for (i = 0; i < CFRAME_BUFFER_COUNT; i++)
+            if (f->cfrm[i].id && f->cfrm[i].id < avctx->frame_number)
+                av_log(f->avctx, AV_LOG_ERROR, "lost c frame %d\n",
+                       f->cfrm[i].id);
 
-        for(i=0; i<CFRAME_BUFFER_COUNT; i++){
-            if(f->cfrm[i].id   == id) break;
-            if(f->cfrm[i].size == 0 ) free_index= i;
+        for (i = 0; i < CFRAME_BUFFER_COUNT; i++) {
+            if (f->cfrm[i].id == id)
+                break;
+            if (f->cfrm[i].size == 0)
+                free_index = i;
         }
 
-        if(i>=CFRAME_BUFFER_COUNT){
-            i= free_index;
-            f->cfrm[i].id= id;
+        if (i >= CFRAME_BUFFER_COUNT) {
+            i             = free_index;
+            f->cfrm[i].id = id;
         }
-        cfrm= &f->cfrm[i];
+        cfrm = &f->cfrm[i];
 
-        cfrm->data= av_fast_realloc(cfrm->data, &cfrm->allocated_size, cfrm->size + data_size + FF_INPUT_BUFFER_PADDING_SIZE);
-        if(!cfrm->data){ //explicit check needed as memcpy below might not catch a NULL
+        cfrm->data = av_fast_realloc(cfrm->data, &cfrm->allocated_size,
+                                     cfrm->size + data_size + FF_INPUT_BUFFER_PADDING_SIZE);
+        // explicit check needed as memcpy below might not catch a NULL
+        if (!cfrm->data) {
             av_log(f->avctx, AV_LOG_ERROR, "realloc falure");
             return -1;
         }
 
-        memcpy(cfrm->data + cfrm->size, buf+20, data_size);
+        memcpy(cfrm->data + cfrm->size, buf + 20, data_size);
         cfrm->size += data_size;
 
-        if(cfrm->size >= whole_size){
-            buf= cfrm->data;
-            frame_size= cfrm->size;
+        if (cfrm->size >= whole_size) {
+            buf        = cfrm->data;
+            frame_size = cfrm->size;
 
-            if(id != avctx->frame_number){
-                av_log(f->avctx, AV_LOG_ERROR, "cframe id mismatch %d %d\n", id, avctx->frame_number);
-            }
+            if (id != avctx->frame_number)
+                av_log(f->avctx, AV_LOG_ERROR, "cframe id mismatch %d %d\n",
+                       id, avctx->frame_number);
 
-            cfrm->size= cfrm->id= 0;
-            frame_4cc= AV_RL32("pfrm");
-        }else
+            cfrm->size = cfrm->id = 0;
+            frame_4cc  = AV_RL32("pfrm");
+        } else
             return buf_size;
-    }else{
-        buf= buf + 12;
-        frame_size= buf_size - 12;
+    } else {
+        buf        = buf      + 12;
+        frame_size = buf_size - 12;
     }
 
-    temp= f->current_picture;
-    f->current_picture= f->last_picture;
-    f->last_picture= temp;
+    temp               = f->current_picture;
+    f->current_picture = f->last_picture;
+    f->last_picture    = temp;
 
-    p= &f->current_picture;
-    avctx->coded_frame= p;
+    p                  = &f->current_picture;
+    avctx->coded_frame = p;
 
-    avctx->flags |= CODEC_FLAG_EMU_EDGE; // alternatively we would have to use our own buffer management
+    // alternatively we would have to use our own buffer management
+    avctx->flags |= CODEC_FLAG_EMU_EDGE;
 
-    if(p->data[0])
+    if (p->data[0])
         avctx->release_buffer(avctx, p);
 
-    p->reference= 1;
-    if(avctx->get_buffer(avctx, p) < 0){
+    p->reference = 1;
+    if (avctx->get_buffer(avctx, p) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
 
-    if(frame_4cc == AV_RL32("ifr2")){
-        p->pict_type= AV_PICTURE_TYPE_I;
-        if(decode_i2_frame(f, buf-4, frame_size + 4) < 0)
+    if (frame_4cc == AV_RL32("ifr2")) {
+        p->pict_type = AV_PICTURE_TYPE_I;
+        if (decode_i2_frame(f, buf - 4, frame_size + 4) < 0)
             return -1;
-    }else if(frame_4cc == AV_RL32("ifrm")){
-        p->pict_type= AV_PICTURE_TYPE_I;
-        if(decode_i_frame(f, buf, frame_size) < 0)
+    } else if (frame_4cc == AV_RL32("ifrm")) {
+        p->pict_type = AV_PICTURE_TYPE_I;
+        if (decode_i_frame(f, buf, frame_size) < 0)
             return -1;
-    }else if(frame_4cc == AV_RL32("pfrm") || frame_4cc == AV_RL32("pfr2")){
-        if(!f->last_picture.data[0]){
-            f->last_picture.reference= 1;
-            if(avctx->get_buffer(avctx, &f->last_picture) < 0){
+    } else if (frame_4cc == AV_RL32("pfrm") || frame_4cc == AV_RL32("pfr2")) {
+        if (!f->last_picture.data[0]) {
+            f->last_picture.reference = 1;
+            if (avctx->get_buffer(avctx, &f->last_picture) < 0) {
                 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                 return -1;
             }
         }
 
-        p->pict_type= AV_PICTURE_TYPE_P;
-        if(decode_p_frame(f, buf, frame_size) < 0)
+        p->pict_type = AV_PICTURE_TYPE_P;
+        if (decode_p_frame(f, buf, frame_size) < 0)
             return -1;
-    }else if(frame_4cc == AV_RL32("snd_")){
-        av_log(avctx, AV_LOG_ERROR, "ignoring snd_ chunk length:%d\n", buf_size);
-    }else{
-        av_log(avctx, AV_LOG_ERROR, "ignoring unknown chunk length:%d\n", buf_size);
+    } else if (frame_4cc == AV_RL32("snd_")) {
+        av_log(avctx, AV_LOG_ERROR, "ignoring snd_ chunk length:%d\n",
+               buf_size);
+    } else {
+        av_log(avctx, AV_LOG_ERROR, "ignoring unknown chunk length:%d\n",
+               buf_size);
     }
 
-    p->key_frame= p->pict_type == AV_PICTURE_TYPE_I;
+    p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;
 
-    *picture= *p;
+    *picture   = *p;
     *data_size = sizeof(AVPicture);
 
     emms_c();
@@ -829,47 +876,52 @@ static int decode_frame(AVCodecContext *avctx,
 }
 
 
-static av_cold void common_init(AVCodecContext *avctx){
+static av_cold void common_init(AVCodecContext *avctx)
+{
     FourXContext * const f = avctx->priv_data;
 
     dsputil_init(&f->dsp, avctx);
 
-    f->avctx= avctx;
+    f->avctx = avctx;
 }
 
-static av_cold int decode_init(AVCodecContext *avctx){
+static av_cold int decode_init(AVCodecContext *avctx)
+{
     FourXContext * const f = avctx->priv_data;
 
-    if(avctx->extradata_size != 4 || !avctx->extradata) {
+    if (avctx->extradata_size != 4 || !avctx->extradata) {
         av_log(avctx, AV_LOG_ERROR, "extradata wrong or missing\n");
         return 1;
     }
 
-    f->version= AV_RL32(avctx->extradata)>>16;
+    f->version = AV_RL32(avctx->extradata) >> 16;
     common_init(avctx);
     init_vlcs(f);
 
-    if(f->version>2) avctx->pix_fmt= PIX_FMT_RGB565;
-    else             avctx->pix_fmt= PIX_FMT_BGR555;
+    if (f->version > 2)
+        avctx->pix_fmt = PIX_FMT_RGB565;
+    else
+        avctx->pix_fmt = PIX_FMT_BGR555;
 
     return 0;
 }
 
 
-static av_cold int decode_end(AVCodecContext *avctx){
+static av_cold int decode_end(AVCodecContext *avctx)
+{
     FourXContext * const f = avctx->priv_data;
     int i;
 
     av_freep(&f->bitstream_buffer);
-    f->bitstream_buffer_size=0;
-    for(i=0; i<CFRAME_BUFFER_COUNT; i++){
+    f->bitstream_buffer_size = 0;
+    for (i = 0; i < CFRAME_BUFFER_COUNT; i++) {
         av_freep(&f->cfrm[i].data);
-        f->cfrm[i].allocated_size= 0;
+        f->cfrm[i].allocated_size = 0;
     }
     free_vlc(&f->pre_vlc);
-    if(f->current_picture.data[0])
+    if (f->current_picture.data[0])
         avctx->release_buffer(avctx, &f->current_picture);
-    if(f->last_picture.data[0])
+    if (f->last_picture.data[0])
         avctx->release_buffer(avctx, &f->last_picture);
 
     return 0;
@@ -884,5 +936,5 @@ AVCodec ff_fourxm_decoder = {
     .close          = decode_end,
     .decode         = decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name = NULL_IF_CONFIG_SMALL("4X Movie"),
+    .long_name      = NULL_IF_CONFIG_SMALL("4X Movie"),
 };