vp9_dct_sse2: make some functions static

silences missing prototype warnings

Change-Id: I773b6a6b5bd7c57db18c3b17c519534f80e131de

vp9/encoder/x86/vp9_dct_sse2.c

@@ -96,7 +96,7 @@ static INLINE void transpose_4x4(__m128i *res) {
   res[3] = _mm_unpackhi_epi64(res[2], res[2]);
 }
 
-void fdct4_sse2(__m128i *in) {
+static void fdct4_sse2(__m128i *in) {
   const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)cospi_16_64);
   const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
   const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
@@ -129,7 +129,7 @@ void fdct4_sse2(__m128i *in) {
   transpose_4x4(in);
 }
 
-void fadst4_sse2(__m128i *in) {
+static void fadst4_sse2(__m128i *in) {
   const __m128i k__sinpi_p01_p02 = pair_set_epi16(sinpi_1_9, sinpi_2_9);
   const __m128i k__sinpi_p04_m01 = pair_set_epi16(sinpi_4_9, -sinpi_1_9);
   const __m128i k__sinpi_p03_p04 = pair_set_epi16(sinpi_3_9, sinpi_4_9);
@@ -831,7 +831,7 @@ static INLINE void array_transpose_8x8(__m128i *in, __m128i *res) {
   // 07 17 27 37 47 57 67 77
 }
 
-void fdct8_sse2(__m128i *in) {
+static void fdct8_sse2(__m128i *in) {
   // constants
   const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)cospi_16_64);
   const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
@@ -971,7 +971,7 @@ void fdct8_sse2(__m128i *in) {
   array_transpose_8x8(in, in);
 }
 
-void fadst8_sse2(__m128i *in) {
+static void fadst8_sse2(__m128i *in) {
   // Constants
   const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64);
   const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64);
@@ -1353,7 +1353,7 @@ static INLINE void right_shift_16x16(__m128i *res0, __m128i *res1) {
   right_shift_8x8(res1 + 8, 2);
 }
 
-void fdct16_8col(__m128i *in) {
+static void fdct16_8col(__m128i *in) {
   // perform 16x16 1-D DCT for 8 columns
   __m128i i[8], s[8], p[8], t[8], u[16], v[16];
   const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)cospi_16_64);
@@ -1675,7 +1675,7 @@ void fdct16_8col(__m128i *in) {
   in[15] = _mm_packs_epi32(v[14], v[15]);
 }
 
-void fadst16_8col(__m128i *in) {
+static void fadst16_8col(__m128i *in) {
   // perform 16x16 1-D ADST for 8 columns
   __m128i s[16], x[16], u[32], v[32];
   const __m128i k__cospi_p01_p31 = pair_set_epi16(cospi_1_64, cospi_31_64);
@@ -2145,13 +2145,13 @@ void fadst16_8col(__m128i *in) {
   in[15] = _mm_sub_epi16(kZero, s[1]);
 }
 
-void fdct16_sse2(__m128i *in0, __m128i *in1) {
+static void fdct16_sse2(__m128i *in0, __m128i *in1) {
   fdct16_8col(in0);
   fdct16_8col(in1);
   array_transpose_16x16(in0, in1);
 }
 
-void fadst16_sse2(__m128i *in0, __m128i *in1) {
+static void fadst16_sse2(__m128i *in0, __m128i *in1) {
   fadst16_8col(in0);
   fadst16_8col(in1);
   array_transpose_16x16(in0, in1);