Move the daala_idtx32() function into daala_tx.c.

This commit has no impact on metrics.

Change-Id: I5d3dd031703b48e2efd3aaaebef070569c0c4a2d

av1/common/daala_tx.c

diff --git a/av1/common/daala_tx.c b/av1/common/daala_tx.c
index b1519bb..cf96918 100644
--- a/av1/common/daala_tx.c
+++ b/av1/common/daala_tx.c
@@ -4248,6 +4248,11 @@
   for (i = 0; i < 32; i++) output[i] = (tran_low_t)x[i];
 }
 
+void daala_idtx32(const tran_low_t *input, tran_low_t *output) {
+  int i;
+  for (i = 0; i < 32; i++) output[i] = input[i];
+}
+
 #if CONFIG_TX64X64
 void daala_fdct64(const tran_low_t *input, tran_low_t *output) {
   int i;

av1/common/daala_tx.h

diff --git a/av1/common/daala_tx.h b/av1/common/daala_tx.h
index ee288da..efef05c 100644
--- a/av1/common/daala_tx.h
+++ b/av1/common/daala_tx.h
@@ -21,6 +21,7 @@
 void daala_idtx16(const tran_low_t *input, tran_low_t *output);
 void daala_fdct32(const tran_low_t *input, tran_low_t *output);
 void daala_idct32(const tran_low_t *input, tran_low_t *output);
+void daala_idtx32(const tran_low_t *input, tran_low_t *output);
 #if CONFIG_TX64X64
 void daala_fdct64(const tran_low_t *input, tran_low_t *output);
 void daala_idct64(const tran_low_t *input, tran_low_t *output);

av1/common/idct.c

diff --git a/av1/common/idct.c b/av1/common/idct.c
index 21ed042..a9b23e1 100644
--- a/av1/common/idct.c
+++ b/av1/common/idct.c
@@ -57,11 +57,7 @@
 static void iidtx32_c(const tran_low_t *input, tran_low_t *output) {
   int i;
   for (i = 0; i < 32; ++i) {
-#if CONFIG_DAALA_DCT32
-    output[i] = input[i];
-#else
     output[i] = input[i] * 4;
-#endif
   }
 }
 
@@ -1381,13 +1377,13 @@
     { ihalfright32_c, ihalfright32_c },  // FLIPADST_FLIPADST
     { ihalfright32_c, ihalfright32_c },  // ADST_FLIPADST
     { ihalfright32_c, ihalfright32_c },  // FLIPADST_ADST
-    { iidtx32_c, iidtx32_c },            // IDTX
-    { daala_idct32, iidtx32_c },         // V_DCT
-    { iidtx32_c, daala_idct32 },         // H_DCT
-    { ihalfright32_c, iidtx32_c },       // V_ADST
-    { iidtx32_c, ihalfright32_c },       // H_ADST
-    { ihalfright32_c, iidtx32_c },       // V_FLIPADST
-    { iidtx32_c, ihalfright32_c },       // H_FLIPADST
+    { daala_idtx32, daala_idtx32 },      // IDTX
+    { daala_idct32, daala_idtx32 },      // V_DCT
+    { daala_idtx32, daala_idct32 },      // H_DCT
+    { ihalfright32_c, daala_idtx32 },    // V_ADST
+    { daala_idtx32, ihalfright32_c },    // H_ADST
+    { ihalfright32_c, daala_idtx32 },    // V_FLIPADST
+    { daala_idtx32, ihalfright32_c },    // H_FLIPADST
 #endif
 #else
     { aom_idct32_c, aom_idct32_c },      // DCT_DCT

av1/encoder/dct.c

diff --git a/av1/encoder/dct.c b/av1/encoder/dct.c
index c37ffc4..0ebc73a 100644
--- a/av1/encoder/dct.c
+++ b/av1/encoder/dct.c
@@ -1140,11 +1140,7 @@
 static void fidtx32(const tran_low_t *input, tran_low_t *output) {
   int i;
   for (i = 0; i < 32; ++i) {
-#if CONFIG_DAALA_DCT32
-    output[i] = input[i];
-#else
     output[i] = input[i] * 4;
-#endif
   }
 }
 
@@ -2429,13 +2425,13 @@
     { fhalfright32, fhalfright32 },  // FLIPADST_FLIPADST
     { fhalfright32, fhalfright32 },  // ADST_FLIPADST
     { fhalfright32, fhalfright32 },  // FLIPADST_ADST
-    { fidtx32, fidtx32 },            // IDTX
-    { daala_fdct32, fidtx32 },       // V_DCT
-    { fidtx32, daala_fdct32 },       // H_DCT
-    { fhalfright32, fidtx32 },       // V_ADST
-    { fidtx32, fhalfright32 },       // H_ADST
-    { fhalfright32, fidtx32 },       // V_FLIPADST
-    { fidtx32, fhalfright32 },       // H_FLIPADST
+    { daala_idtx32, daala_idtx32 },  // IDTX
+    { daala_fdct32, daala_idtx32 },  // V_DCT
+    { daala_idtx32, daala_fdct32 },  // H_DCT
+    { fhalfright32, daala_idtx32 },  // V_ADST
+    { daala_idtx32, fhalfright32 },  // H_ADST
+    { fhalfright32, daala_idtx32 },  // V_FLIPADST
+    { daala_idtx32, fhalfright32 },  // H_FLIPADST
 #endif
 #else
     { fdct32, fdct32 },              // DCT_DCT