vpx_dsp/bitwriter.h: vp9_->vpx_

changes prefix vp9_ to vpx_ for non codec specific functions and
data structures.

Change-Id: I91a21548e39bd24d2c7caaaa223ae47240bb78c8

test/vp9_boolcoder_test.cc

@@ -50,9 +50,9 @@ TEST(VP9, TestBitIO) {
         const int random_seed = 6432;
         const int kBufferSize = 10000;
         ACMRandom bit_rnd(random_seed);
-        vp9_writer bw;
+        vpx_writer bw;
         uint8_t bw_buffer[kBufferSize];
-        vp9_start_encode(&bw, bw_buffer);
+        vpx_start_encode(&bw, bw_buffer);
 
         int bit = (bit_method == 0) ? 0 : (bit_method == 1) ? 1 : 0;
         for (int i = 0; i < kBitsToTest; ++i) {
@@ -61,10 +61,10 @@ TEST(VP9, TestBitIO) {
           } else if (bit_method == 3) {
             bit = bit_rnd(2);
           }
-          vp9_write(&bw, bit, static_cast<int>(probas[i]));
+          vpx_write(&bw, bit, static_cast<int>(probas[i]));
         }
 
-        vp9_stop_encode(&bw);
+        vpx_stop_encode(&bw);
 
         // First bit should be zero
         GTEST_ASSERT_EQ(bw_buffer[0] & 0x80, 0);

vp9/encoder/vp9_encodemv.c

@@ -29,7 +29,7 @@ void vp9_entropy_mv_init(void) {
   vp9_tokens_from_tree(mv_fp_encodings, vp9_mv_fp_tree);
 }
 
-static void encode_mv_component(vp9_writer* w, int comp,
+static void encode_mv_component(vpx_writer* w, int comp,
                                 const nmv_component* mvcomp, int usehp) {
   int offset;
   const int sign = comp < 0;
@@ -42,7 +42,7 @@ static void encode_mv_component(vp9_writer* w, int comp,
   assert(comp != 0);
 
   // Sign
-  vp9_write(w, sign, mvcomp->sign);
+  vpx_write(w, sign, mvcomp->sign);
 
   // Class
   vp9_write_token(w, vp9_mv_class_tree, mvcomp->classes,
@@ -56,7 +56,7 @@ static void encode_mv_component(vp9_writer* w, int comp,
     int i;
     const int n = mv_class + CLASS0_BITS - 1;  // number of bits
     for (i = 0; i < n; ++i)
-      vp9_write(w, (d >> i) & 1, mvcomp->bits[i]);
+      vpx_write(w, (d >> i) & 1, mvcomp->bits[i]);
   }
 
   // Fractional bits
@@ -66,7 +66,7 @@ static void encode_mv_component(vp9_writer* w, int comp,
 
   // High precision bit
   if (usehp)
-    vp9_write(w, hp,
+    vpx_write(w, hp,
               mv_class == MV_CLASS_0 ? mvcomp->class0_hp : mvcomp->hp);
 }
 
@@ -133,15 +133,15 @@ static void build_nmv_component_cost_table(int *mvcost,
   }
 }
 
-static int update_mv(vp9_writer *w, const unsigned int ct[2], vpx_prob *cur_p,
+static int update_mv(vpx_writer *w, const unsigned int ct[2], vpx_prob *cur_p,
                      vpx_prob upd_p) {
   const vpx_prob new_p = get_binary_prob(ct[0], ct[1]) | 1;
   const int update = cost_branch256(ct, *cur_p) + vp9_cost_zero(upd_p) >
                      cost_branch256(ct, new_p) + vp9_cost_one(upd_p) + 7 * 256;
-  vp9_write(w, update, upd_p);
+  vpx_write(w, update, upd_p);
   if (update) {
     *cur_p = new_p;
-    vp9_write_literal(w, new_p >> 1, 7);
+    vpx_write_literal(w, new_p >> 1, 7);
   }
   return update;
 }
@@ -149,7 +149,7 @@ static int update_mv(vp9_writer *w, const unsigned int ct[2], vpx_prob *cur_p,
 static void write_mv_update(const vpx_tree_index *tree,
                             vpx_prob probs[/*n - 1*/],
                             const unsigned int counts[/*n - 1*/],
-                            int n, vp9_writer *w) {
+                            int n, vpx_writer *w) {
   int i;
   unsigned int branch_ct[32][2];
 
@@ -161,7 +161,7 @@ static void write_mv_update(const vpx_tree_index *tree,
     update_mv(w, branch_ct[i], &probs[i], MV_UPDATE_PROB);
 }
 
-void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vp9_writer *w,
+void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vpx_writer *w,
                          nmv_context_counts *const counts) {
   int i, j;
   nmv_context *const mvc = &cm->fc->nmvc;
@@ -199,7 +199,7 @@ void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vp9_writer *w,
   }
 }
 
-void vp9_encode_mv(VP9_COMP* cpi, vp9_writer* w,
+void vp9_encode_mv(VP9_COMP* cpi, vpx_writer* w,
                    const MV* mv, const MV* ref,
                    const nmv_context* mvctx, int usehp) {
   const MV diff = {mv->row - ref->row,

vp9/encoder/vp9_encodemv.h

@@ -20,10 +20,10 @@ extern "C" {
 
 void vp9_entropy_mv_init(void);
 
-void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vp9_writer *w,
+void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vpx_writer *w,
                          nmv_context_counts *const counts);
 
-void vp9_encode_mv(VP9_COMP *cpi, vp9_writer* w, const MV* mv, const MV* ref,
+void vp9_encode_mv(VP9_COMP *cpi, vpx_writer* w, const MV* mv, const MV* ref,
                    const nmv_context* mvctx, int usehp);
 
 void vp9_build_nmv_cost_table(int *mvjoint, int *mvcost[2],

vp9/encoder/vp9_subexp.c

@@ -83,35 +83,35 @@ static int prob_diff_update_cost(vpx_prob newp, vpx_prob oldp) {
   return update_bits[delp] * 256;
 }
 
-static void encode_uniform(vp9_writer *w, int v) {
+static void encode_uniform(vpx_writer *w, int v) {
   const int l = 8;
   const int m = (1 << l) - 191;
   if (v < m) {
-    vp9_write_literal(w, v, l - 1);
+    vpx_write_literal(w, v, l - 1);
   } else {
-    vp9_write_literal(w, m + ((v - m) >> 1), l - 1);
-    vp9_write_literal(w, (v - m) & 1, 1);
+    vpx_write_literal(w, m + ((v - m) >> 1), l - 1);
+    vpx_write_literal(w, (v - m) & 1, 1);
   }
 }
 
-static INLINE int write_bit_gte(vp9_writer *w, int word, int test) {
-  vp9_write_literal(w, word >= test, 1);
+static INLINE int write_bit_gte(vpx_writer *w, int word, int test) {
+  vpx_write_literal(w, word >= test, 1);
   return word >= test;
 }
 
-static void encode_term_subexp(vp9_writer *w, int word) {
+static void encode_term_subexp(vpx_writer *w, int word) {
   if (!write_bit_gte(w, word, 16)) {
-    vp9_write_literal(w, word, 4);
+    vpx_write_literal(w, word, 4);
   } else if (!write_bit_gte(w, word, 32)) {
-    vp9_write_literal(w, word - 16, 4);
+    vpx_write_literal(w, word - 16, 4);
   } else if (!write_bit_gte(w, word, 64)) {
-    vp9_write_literal(w, word - 32, 5);
+    vpx_write_literal(w, word - 32, 5);
   } else {
     encode_uniform(w, word - 64);
   }
 }
 
-void vp9_write_prob_diff_update(vp9_writer *w, vpx_prob newp, vpx_prob oldp) {
+void vp9_write_prob_diff_update(vpx_writer *w, vpx_prob newp, vpx_prob oldp) {
   const int delp = remap_prob(newp, oldp);
   encode_term_subexp(w, delp);
 }
@@ -196,7 +196,7 @@ int vp9_prob_diff_update_savings_search_model(const unsigned int *ct,
   return bestsavings;
 }
 
-void vp9_cond_prob_diff_update(vp9_writer *w, vpx_prob *oldp,
+void vp9_cond_prob_diff_update(vpx_writer *w, vpx_prob *oldp,
                                const unsigned int ct[2]) {
   const vpx_prob upd = DIFF_UPDATE_PROB;
   vpx_prob newp = get_binary_prob(ct[0], ct[1]);
@@ -204,10 +204,10 @@ void vp9_cond_prob_diff_update(vp9_writer *w, vpx_prob *oldp,
                                                           upd);
   assert(newp >= 1);
   if (savings > 0) {
-    vp9_write(w, 1, upd);
+    vpx_write(w, 1, upd);
     vp9_write_prob_diff_update(w, newp, *oldp);
     *oldp = newp;
   } else {
-    vp9_write(w, 0, upd);
+    vpx_write(w, 0, upd);
   }
 }

vp9/encoder/vp9_subexp.h

@@ -18,12 +18,12 @@ extern "C" {
 
 #include "vpx_dsp/prob.h"
 
-struct vp9_writer;
+struct vpx_writer;
 
-void vp9_write_prob_diff_update(struct vp9_writer *w,
+void vp9_write_prob_diff_update(struct vpx_writer *w,
                                 vpx_prob newp, vpx_prob oldp);
 
-void vp9_cond_prob_diff_update(struct vp9_writer *w, vpx_prob *oldp,
+void vp9_cond_prob_diff_update(struct vpx_writer *w, vpx_prob *oldp,
                                const unsigned int ct[2]);
 
 int vp9_prob_diff_update_savings_search(const unsigned int *ct,

vp9/encoder/vp9_treewriter.h

@@ -28,17 +28,17 @@ struct vp9_token {
 
 void vp9_tokens_from_tree(struct vp9_token*, const vpx_tree_index *);
 
-static INLINE void vp9_write_tree(vp9_writer *w, const vpx_tree_index *tree,
+static INLINE void vp9_write_tree(vpx_writer *w, const vpx_tree_index *tree,
                                   const vpx_prob *probs, int bits, int len,
                                   vpx_tree_index i) {
   do {
     const int bit = (bits >> --len) & 1;
-    vp9_write(w, bit, probs[i >> 1]);
+    vpx_write(w, bit, probs[i >> 1]);
     i = tree[i + bit];
   } while (len);
 }
 
-static INLINE void vp9_write_token(vp9_writer *w, const vpx_tree_index *tree,
+static INLINE void vp9_write_token(vpx_writer *w, const vpx_tree_index *tree,
                                    const vpx_prob *probs,
                                    const struct vp9_token *token) {
   vp9_write_tree(w, tree, probs, token->value, token->len, 0);

vpx_dsp/bitwriter.c

@@ -12,20 +12,20 @@
 
 #include "./bitwriter.h"
 
-void vp9_start_encode(vp9_writer *br, uint8_t *source) {
+void vpx_start_encode(vpx_writer *br, uint8_t *source) {
   br->lowvalue = 0;
   br->range    = 255;
   br->count    = -24;
   br->buffer   = source;
   br->pos      = 0;
-  vp9_write_bit(br, 0);
+  vpx_write_bit(br, 0);
 }
 
-void vp9_stop_encode(vp9_writer *br) {
+void vpx_stop_encode(vpx_writer *br) {
   int i;
 
   for (i = 0; i < 32; i++)
-    vp9_write_bit(br, 0);
+    vpx_write_bit(br, 0);
 
   // Ensure there's no ambigous collision with any index marker bytes
   if ((br->buffer[br->pos - 1] & 0xe0) == 0xc0)

vpx_dsp/bitwriter.h

@@ -19,18 +19,18 @@
 extern "C" {
 #endif
 
-typedef struct vp9_writer {
+typedef struct vpx_writer {
   unsigned int lowvalue;
   unsigned int range;
   int count;
   unsigned int pos;
   uint8_t *buffer;
-} vp9_writer;
+} vpx_writer;
 
-void vp9_start_encode(vp9_writer *bc, uint8_t *buffer);
-void vp9_stop_encode(vp9_writer *bc);
+void vpx_start_encode(vpx_writer *bc, uint8_t *buffer);
+void vpx_stop_encode(vpx_writer *bc);
 
-static INLINE void vp9_write(vp9_writer *br, int bit, int probability) {
+static INLINE void vpx_write(vpx_writer *br, int bit, int probability) {
   unsigned int split;
   int count = br->count;
   unsigned int range = br->range;
@@ -78,18 +78,18 @@ static INLINE void vp9_write(vp9_writer *br, int bit, int probability) {
   br->range = range;
 }
 
-static INLINE void vp9_write_bit(vp9_writer *w, int bit) {
-  vp9_write(w, bit, 128);  // vpx_prob_half
+static INLINE void vpx_write_bit(vpx_writer *w, int bit) {
+  vpx_write(w, bit, 128);  // vpx_prob_half
 }
 
-static INLINE void vp9_write_literal(vp9_writer *w, int data, int bits) {
+static INLINE void vpx_write_literal(vpx_writer *w, int data, int bits) {
   int bit;
 
   for (bit = bits - 1; bit >= 0; bit--)
-    vp9_write_bit(w, 1 & (data >> bit));
+    vpx_write_bit(w, 1 & (data >> bit));
 }
 
-#define vp9_write_prob(w, v) vp9_write_literal((w), (v), 8)
+#define vpx_write_prob(w, v) vpx_write_literal((w), (v), 8)
 
 #ifdef __cplusplus
 }  // extern "C"