diff options
Diffstat (limited to 'media/libstagefright/codecs/aacdec/dst16.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/dst16.cpp | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/media/libstagefright/codecs/aacdec/dst16.cpp b/media/libstagefright/codecs/aacdec/dst16.cpp deleted file mode 100644 index 41c9259..0000000 --- a/media/libstagefright/codecs/aacdec/dst16.cpp +++ /dev/null @@ -1,172 +0,0 @@ -/* ------------------------------------------------------------------ - * Copyright (C) 1998-2009 PacketVideo - * - * 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. - * ------------------------------------------------------------------- - */ -/* - - Filename: dst16.c - ------------------------------------------------------------------------------- - REVISION HISTORY - - - Who: Date: MM/DD/YYYY - Description: - ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Int32 x 32-bit integer input length 16 - - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - Implement discrete sine transform of lenght 16 - ------------------------------------------------------------------------------- - REQUIREMENTS - - ------------------------------------------------------------------------------- - REFERENCES - ------------------------------------------------------------------------------- - PSEUDO-CODE - ------------------------------------------------------------------------------- -*/ - - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ - -#ifdef AAC_PLUS - -#include "dst16.h" -#include "dst8.h" -#include "fxp_mul32.h" - -/*---------------------------------------------------------------------------- -; MACROS -; Define module specific macros here -----------------------------------------------------------------------------*/ - - -/*---------------------------------------------------------------------------- -; DEFINES -; Include all pre-processor statements here. Include conditional -; compile variables also. -----------------------------------------------------------------------------*/ - - -#define R_SHIFT 28 -#define Qfmt(x) (Int32)(x*((Int32)1<<R_SHIFT) + (x>=0?0.5F:-0.5F)) - -const Int32 CosTable_8[8] = -{ - Qfmt(0.50241928618816F), Qfmt(0.52249861493969F), - Qfmt(0.56694403481636F), Qfmt(0.64682178335999F), - Qfmt(0.78815462345125F), Qfmt(1.06067768599035F), - Qfmt(1.72244709823833F), Qfmt(5.10114861868916F) -}; - -/*---------------------------------------------------------------------------- -; LOCAL FUNCTION DEFINITIONS -; Function Prototype declaration -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL STORE/BUFFER/POINTER DEFINITIONS -; Variable declaration - defined here and used outside this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL FUNCTION REFERENCES -; Declare functions defined elsewhere and referenced in this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES -; Declare variables used in this module but defined elsewhere -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; FUNCTION CODE -----------------------------------------------------------------------------*/ - - -void dst_16(Int32 vec[], Int32 scratch_mem[]) /* scratch_mem size 8 */ -{ - Int32 *temp_even = scratch_mem; - - Int i; - const Int32 *pt_cos = &CosTable_8[7]; - Int32 tmp0 = vec[15] >> 1; - Int32 tmp1, tmp2; - Int32 *pt_even = temp_even; - Int32 *pt_odd = vec; - Int32 *pt_vec = vec; - Int32 *pt_vecN_1; - Int32 tmp3; - - - *(pt_even++) = *(pt_vec++); - tmp1 = *(pt_vec++); - *(pt_odd++) = tmp1; - - for (i = 3; i != 0; i--) - { - *(pt_even++) = *(pt_vec++); - tmp2 = *(pt_vec++); - *(pt_even++) = *(pt_vec++); - tmp3 = *(pt_vec++); - *(pt_odd++) = tmp2 + tmp1; - *(pt_odd++) = tmp3 + tmp2; - tmp1 = tmp3; - - } - - *(pt_even) = *(pt_vec++); - *(pt_odd++) = *(pt_vec) + tmp1; - - - dst_8(temp_even); - dst_8(vec); - - pt_vec = &vec[7]; - - pt_even = &temp_even[7]; - pt_vecN_1 = &vec[8]; - - tmp1 = *(pt_even--); - - for (i = 4; i != 0; i--) - { - tmp3 = fxp_mul32_Q28((*(pt_vec) - tmp0), *(pt_cos--)); - tmp2 = *(pt_even--); - *(pt_vec--) = tmp3 + tmp1; - *(pt_vecN_1++) = tmp3 - tmp1; - tmp3 = fxp_mul32_Q28((*(pt_vec) + tmp0), *(pt_cos--)); - tmp1 = *(pt_even--); - *(pt_vecN_1++) = tmp3 - tmp2; - *(pt_vec--) = tmp3 + tmp2; - } - -} - -#endif |