Revert "cabac: Allow hardcoding CABAC table."

This becomes unuseful in the following commit.

This reverts commit 092d1977cc7146f20c8db2155e7d648afb300de7.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

1 files changed, 72 insertions, 2 deletions

diff --git a/libavcodec/cabac.c b/libavcodec/cabac.c
index 8cc9333e09..bc0d8ac605 100644
--- a/libavcodec/cabac.c
+++ b/libavcodec/cabac.c
@@ -32,7 +32,55 @@
 #include "cabac.h"
 #include "cabac_functions.h"
 
-#include "cabac_tablegen.h"
+uint8_t ff_h264_cabac_tables[512 + 4*2*64 + 4*64 + 63];
+
+static const uint8_t lps_range[64][4]= {
+{128,176,208,240}, {128,167,197,227}, {128,158,187,216}, {123,150,178,205},
+{116,142,169,195}, {111,135,160,185}, {105,128,152,175}, {100,122,144,166},
+{ 95,116,137,158}, { 90,110,130,150}, { 85,104,123,142}, { 81, 99,117,135},
+{ 77, 94,111,128}, { 73, 89,105,122}, { 69, 85,100,116}, { 66, 80, 95,110},
+{ 62, 76, 90,104}, { 59, 72, 86, 99}, { 56, 69, 81, 94}, { 53, 65, 77, 89},
+{ 51, 62, 73, 85}, { 48, 59, 69, 80}, { 46, 56, 66, 76}, { 43, 53, 63, 72},
+{ 41, 50, 59, 69}, { 39, 48, 56, 65}, { 37, 45, 54, 62}, { 35, 43, 51, 59},
+{ 33, 41, 48, 56}, { 32, 39, 46, 53}, { 30, 37, 43, 50}, { 29, 35, 41, 48},
+{ 27, 33, 39, 45}, { 26, 31, 37, 43}, { 24, 30, 35, 41}, { 23, 28, 33, 39},
+{ 22, 27, 32, 37}, { 21, 26, 30, 35}, { 20, 24, 29, 33}, { 19, 23, 27, 31},
+{ 18, 22, 26, 30}, { 17, 21, 25, 28}, { 16, 20, 23, 27}, { 15, 19, 22, 25},
+{ 14, 18, 21, 24}, { 14, 17, 20, 23}, { 13, 16, 19, 22}, { 12, 15, 18, 21},
+{ 12, 14, 17, 20}, { 11, 14, 16, 19}, { 11, 13, 15, 18}, { 10, 12, 15, 17},
+{ 10, 12, 14, 16}, {  9, 11, 13, 15}, {  9, 11, 12, 14}, {  8, 10, 12, 14},
+{  8,  9, 11, 13}, {  7,  9, 11, 12}, {  7,  9, 10, 12}, {  7,  8, 10, 11},
+{  6,  8,  9, 11}, {  6,  7,  9, 10}, {  6,  7,  8,  9}, {  2,  2,  2,  2},
+};
+
+static const uint8_t mps_state[64]= {
+  1, 2, 3, 4, 5, 6, 7, 8,
+  9,10,11,12,13,14,15,16,
+ 17,18,19,20,21,22,23,24,
+ 25,26,27,28,29,30,31,32,
+ 33,34,35,36,37,38,39,40,
+ 41,42,43,44,45,46,47,48,
+ 49,50,51,52,53,54,55,56,
+ 57,58,59,60,61,62,62,63,
+};
+
+static const uint8_t lps_state[64]= {
+  0, 0, 1, 2, 2, 4, 4, 5,
+  6, 7, 8, 9, 9,11,11,12,
+ 13,13,15,15,16,16,18,18,
+ 19,19,21,21,22,22,23,24,
+ 24,25,26,26,27,27,28,29,
+ 29,30,30,30,31,32,32,33,
+ 33,33,34,34,35,35,35,36,
+ 36,36,37,37,37,38,38,63,
+};
+
+static const uint8_t last_coeff_flag_offset_8x8[63] = {
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
+ 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8
+};
 
 /**
  *
@@ -68,12 +116,34 @@ void ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size){
 
 void ff_init_cabac_states(void)
 {
+    int i, j;
     static int initialized = 0;
 
     if (initialized)
         return;
 
-    cabac_tableinit();
+    for (i = 0; i < 512; i++)
+        ff_h264_norm_shift[i] = i ? 8 - av_log2(i) : 9;
+
+    for(i=0; i<64; i++){
+        for(j=0; j<4; j++){ //FIXME check if this is worth the 1 shift we save
+            ff_h264_lps_range[j*2*64+2*i+0]=
+            ff_h264_lps_range[j*2*64+2*i+1]= lps_range[i][j];
+        }
+        ff_h264_mlps_state[128 + 2 * i + 0] = 2 * mps_state[i] + 0;
+        ff_h264_mlps_state[128 + 2 * i + 1] = 2 * mps_state[i] + 1;
+
+        if( i ){
+            ff_h264_mlps_state[128-2*i-1]= 2*lps_state[i]+0;
+            ff_h264_mlps_state[128-2*i-2]= 2*lps_state[i]+1;
+        }else{
+            ff_h264_mlps_state[128-2*i-1]= 1;
+            ff_h264_mlps_state[128-2*i-2]= 0;
+        }
+    }
+    for(i=0; i< 63; i++){
+      ff_h264_last_coeff_flag_offset_8x8[i] = last_coeff_flag_offset_8x8[i];
+    }
 
     initialized = 1;
 }