diff options
Diffstat (limited to 'media/libstagefright/codecs/aacdec/idct32.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/idct32.cpp | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/media/libstagefright/codecs/aacdec/idct32.cpp b/media/libstagefright/codecs/aacdec/idct32.cpp deleted file mode 100644 index ac9773b..0000000 --- a/media/libstagefright/codecs/aacdec/idct32.cpp +++ /dev/null @@ -1,196 +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: idct32.c - ------------------------------------------------------------------------------- - REVISION HISTORY - - - Who: Date: MM/DD/YYYY - Description: - ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Int32 x 32-bit integer input length 32 - - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - Implement inverse discrete cosine transform of lenght 32 - ------------------------------------------------------------------------------- - REQUIREMENTS - - ------------------------------------------------------------------------------- - REFERENCES - ------------------------------------------------------------------------------- - PSEUDO-CODE - ------------------------------------------------------------------------------- -*/ - - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ - -#ifdef AAC_PLUS - -#include "idct32.h" -#include "dst32.h" -#include "idct16.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_SHIFT1 29 -#define Qfmt1(x) (Int32)(x*((Int32)1<<R_SHIFT1) + (x>=0?0.5F:-0.5F)) - -#define Qfmt3(a) (Int32)(a*0x7FFFFFFF + (a>=0?0.5F:-0.5F)) - - -/*---------------------------------------------------------------------------- -; 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 idct_32(Int32 vec[], Int32 scratch_mem[]) /* scratch_mem size 32 */ -{ - Int32 *temp_even = scratch_mem; - - Int32 i; - const Int32 *pt_cos = CosTable_16; - 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++); - tmp2 = 0; - - for (i = 7; i != 0; i--) - { - *(pt_odd++) = tmp2 + tmp1; - *(pt_even++) = *(pt_vec++); - tmp2 = *(pt_vec++); - *(pt_even++) = *(pt_vec++); - *(pt_odd++) = tmp2 + tmp1; - tmp1 = *(pt_vec++); - } - - *(pt_odd++) = tmp2 + tmp1; - *(pt_even++) = *(pt_vec++); - tmp2 = *(pt_vec++); - *(pt_odd++) = tmp2 + tmp1; - - - idct_16(temp_even, &scratch_mem[16]); - idct_16(vec, &scratch_mem[24]); - - - pt_cos = &CosTable_16[13]; - - pt_vec = &vec[15]; - - pt_even = &temp_even[15]; - pt_vecN_1 = &vec[16]; - - tmp1 = *(pt_even--); - - - tmp3 = fxp_mul32_Q31(*(pt_vec) << 3, Qfmt3(0.63687550772175F)) << 2; - tmp2 = *(pt_even--); - *(pt_vecN_1++) = tmp1 - tmp3; - *(pt_vec--) = tmp1 + tmp3; - tmp3 = fxp_mul32_Q31(*(pt_vec) << 3, Qfmt3(0.85190210461718F)); - - tmp1 = *(pt_even--); - *(pt_vecN_1++) = tmp2 - tmp3; - *(pt_vec--) = tmp2 + tmp3; - - for (i = 2; i != 0; i--) - { - tmp3 = fxp_mul32_Q29(*(pt_vec), *(pt_cos--)); - tmp2 = *(pt_even--); - *(pt_vecN_1++) = tmp1 - tmp3; - *(pt_vec--) = tmp1 + tmp3; - tmp3 = fxp_mul32_Q29(*(pt_vec), *(pt_cos--)); - tmp1 = *(pt_even--); - *(pt_vecN_1++) = tmp2 - tmp3; - *(pt_vec--) = tmp2 + tmp3; - } - - for (i = 5; i != 0; i--) - { - tmp3 = fxp_mul32_Q31(*(pt_vec) << 1, *(pt_cos--)); - tmp2 = *(pt_even--); - *(pt_vecN_1++) = tmp1 - tmp3; - *(pt_vec--) = tmp1 + tmp3; - tmp3 = fxp_mul32_Q31(*(pt_vec) << 1, *(pt_cos--)); - tmp1 = *(pt_even--); - *(pt_vecN_1++) = tmp2 - tmp3; - *(pt_vec--) = tmp2 + tmp3; - } -} - - - -#endif |