Combined Workspace for Encoder and Decoder (#33)

* Combined Workspace for Encoder and Decoder

* Addressed review comments and some minor edits

---------

Co-authored-by: Divya B M <100655@ittiam.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/encoder/ixheaace_common_rom.h b/encoder/ixheaace_common_rom.h
new file mode 100644
index 0000000..9765e4a
--- /dev/null
+++ b/encoder/ixheaace_common_rom.h
@@ -0,0 +1,55 @@
+/******************************************************************************
+ *                                                                            *
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+ */
+
+#pragma once
+
+typedef struct {
+  const WORD32 sqrt_tab[513];
+  const WORD32 sine_array[3];
+  const WORD32 cosine_array[3];
+  const FLOAT32 sin_arr[3];
+  const FLOAT32 cos_arr[3];
+  const WORD32 power_of_2_table_pos[256];
+  const WORD32 power_of_2_table_neg[256];
+  const WORD32 log_natural_Q25[128];
+  const WORD32 sfb_width_pow_point_25_Q28[25];
+  const short ia_enhaacplus_enc_w1024[768];
+} ixheaace_common_tables;
+
+extern
+    const ixheaace_common_tables ia_enhaacplus_enc_common_tab;
+
+typedef struct {
+  ixheaace_common_tables *pstr_common_tab;
+} ixheaace_comm_tables;
+
+extern const FLOAT64 ia_enhaacplus_enc_twiddle_table_3pr[1155];
+
+extern const FLOAT64 ia_enhaacplus_enc_twiddle_table_3pi[1155];
+
+extern const FLOAT64 ia_enhaacplus_enc_twiddle_table_fft_32x32[514];
+
+extern const WORD32 ia_enhaacplus_enc_fft240_table1[240];
+
+extern const WORD32 ia_enhaacplus_enc_fft240_table2[240];
+
+extern const UWORD32 ia_sampl_freq_table[16];
+
+extern const UWORD32 ia_usac_sampl_freq_table[32];