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author | James Dong <jdong@google.com> | 2012-03-28 10:42:44 -0700 |
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committer | James Dong <jdong@google.com> | 2012-03-28 10:42:44 -0700 |
commit | d927a1d99630c05ff773f0e9e8791ca9a965e020 (patch) | |
tree | 760f8a19e317d68f937eda312efab59200880ecd /media/libstagefright/codecs/aacdec/fwd_long_complex_rot.cpp | |
parent | f9c1f9935b349fe1a3f27be4462026dd212f8b78 (diff) | |
download | frameworks_base-d927a1d99630c05ff773f0e9e8791ca9a965e020.zip frameworks_base-d927a1d99630c05ff773f0e9e8791ca9a965e020.tar.gz frameworks_base-d927a1d99630c05ff773f0e9e8791ca9a965e020.tar.bz2 |
Deleted the media, camera, drm related files since they are relocated
Change-Id: I9bc5573ee07e30b305b5b879023aa9ec69e10b91
Diffstat (limited to 'media/libstagefright/codecs/aacdec/fwd_long_complex_rot.cpp')
-rw-r--r-- | media/libstagefright/codecs/aacdec/fwd_long_complex_rot.cpp | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/media/libstagefright/codecs/aacdec/fwd_long_complex_rot.cpp b/media/libstagefright/codecs/aacdec/fwd_long_complex_rot.cpp deleted file mode 100644 index b85c7df..0000000 --- a/media/libstagefright/codecs/aacdec/fwd_long_complex_rot.cpp +++ /dev/null @@ -1,284 +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. - * ------------------------------------------------------------------- - */ -/* - - Pathname: ./src/fwd_long_complex_rot.c - Funtions: fwd_long_complex_rot - ------------------------------------------------------------------------------- - REVISION HISTORY - - Date: 10/18/2002 - Description: - (1) Change the input arguments, no shifts information from - long_fft_rx4 is passed, only a single max is passed. - (2) Eliminate search for max, a fixed shift has replaced the - search for max with minimal loss of precision. - (3) Eliminated unused variables - - Date: 10/28/2002 - Description: - (1) Added comments per code review - (2) Eliminated hardly used condition on if-else (exp==0) - - Description: - - ------------------------------------------------------------------------------ - INPUT AND OUTPUT DEFINITIONS - - Inputs: - - Data_in = Input vector (sized for long windows - TWICE_FWD_LONG_CX_ROT_LENGTH), with time domain samples - type Int32 * - - Data_out = Output vector with a post-rotation by exp(-j(2pi/N)(k+1/8)), - (sized for long windows TWICE_FWD_LONG_CX_ROT_LENGTH) - type Int32 * - - max = Input, carries the maximum value of the input vector - "Data_in" - type Int32 - - - Local Stores/Buffers/Pointers Needed: - None - - Global Stores/Buffers/Pointers Needed: - None - - Outputs: - exp = shift factor to reflect signal scaling - - Pointers and Buffers Modified: - Results are return in "Data_out" - - Local Stores Modified: - None - - Global Stores Modified: - None ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - fwd_long_complex_rot() performs the pre complex rotation for the MDCT - for the case of long windows. It also performs digit reverse ordering of - the first and second halves of the input vector "Data_in", as well as - reordering of the two half vectors (following radix-2 decomposition) - Word normalization is also done to ensure 16 by 16 bit multiplications. - ------------------------------------------------------------------------------- - REQUIREMENTS - - fwd_long_complex_rot() should execute a pre-rotation by - exp(-j(2pi/N)(k+1/8)), digit reverse ordering and normalization ------------------------------------------------------------------------------- - REFERENCES - ------------------------------------------------------------------------------- - RESOURCES USED - When the code is written for a specific target processor the - the resources used should be documented below. - - STACK USAGE: [stack count for this module] + [variable to represent - stack usage for each subroutine called] - - where: [stack usage variable] = stack usage for [subroutine - name] (see [filename].ext) - - DATA MEMORY USED: x words - - PROGRAM MEMORY USED: x words - - CLOCK CYCLES: [cycle count equation for this module] + [variable - used to represent cycle count for each subroutine - called] - - where: [cycle count variable] = cycle count for [subroutine - name] (see [filename].ext) - ------------------------------------------------------------------------------- -*/ - - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ - -#include "fwd_long_complex_rot.h" -#include "digit_reversal_tables.h" -#include "imdct_fxp.h" -#include "pv_normalize.h" - -#include "fxp_mul32.h" - -/*---------------------------------------------------------------------------- -; MACROS -; Define module specific macros here -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; DEFINES -; Include all pre-processor statements here. Include conditional -; compile variables also. -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL FUNCTION DEFINITIONS -; Function Prototype declaration -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL VARIABLE DEFINITIONS -; Variable declaration - defined here and used outside this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL FUNCTION REFERENCES -; Declare functions defined elsewhere and referenced in this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL VARIABLES REFERENCES -; Declare variables used in this module but defined elsewhere -----------------------------------------------------------------------------*/ - -Int fwd_long_complex_rot( - Int32 *Data_in, - Int32 *Data_out, - Int32 max) -{ - Int i; - const Int32 *p_rotate; - Int32 temp_re; - Int32 temp_im; - Int32 *pData_in_ref1; - Int32 *pData_in_ref2; - Int32 exp_jw; - Int32 temp_re_32; - Int32 temp_im_32; - - Int32 *pData_out_1; - Int32 *pData_out_2; - Int32 *pData_out_3; - Int32 *pData_out_4; - - Int32 *pData_in_1; - Int32 *pData_in_2; - - Int exp; - - p_rotate = exp_rotation_N_2048; - - pData_in_ref1 = Data_in; - pData_in_ref2 = &Data_in[TWICE_FWD_LONG_CX_ROT_LENGTH]; - - pData_out_1 = Data_out; - pData_out_2 = &Data_out[LONG_WINDOW_LENGTH_m_1]; - pData_out_3 = &Data_out[LONG_WINDOW_LENGTH]; - pData_out_4 = &Data_out[TWICE_LONG_WINDOW_LENGTH_m_1]; - - /* - * Data_out - * >>>> <<<< - * pData_out_3 pData_out_4 - * | | | | | - * pData_out_1 pData_out_2 - * >>>> <<<< - */ - - - exp = 16 - pv_normalize(max); - - if (exp < 0) - { - exp = 0; - } - - /* - * Apply A/2^(diff) + B - */ - - - pData_in_1 = pData_in_ref1; - pData_in_2 = pData_in_ref2; - - for (i = FWD_LONG_CX_ROT_LENGTH; i != 0; i--) - { - - /* - * cos_n + j*sin_n == exp(j(2pi/N)(k+1/8)) - */ - - exp_jw = *p_rotate++; - - /* - * Use auxiliary variables to avoid double accesses to memory. - * Data in is scaled to use only lower 16 bits. - */ - - temp_re = *(pData_in_1++) >> exp; - temp_im = *(pData_in_1++) >> exp; - - /* - * Pre-rotation - */ - - temp_re_32 = (cmplx_mul32_by_16(temp_re, temp_im, exp_jw)); - temp_im_32 = (cmplx_mul32_by_16(temp_im, -temp_re, exp_jw)); - - *(pData_out_1++) = - temp_re_32; - *(pData_out_2--) = temp_im_32; - *(pData_out_3++) = - temp_im_32; - *(pData_out_4--) = temp_re_32; - - /* - * Pointer increment to jump over imag (1 & 4) or real parts - * (2 & 3) - */ - pData_out_1++; - pData_out_2--; - pData_out_3++; - pData_out_4--; - - /* - * Repeat procedure for odd index at the output - */ - - exp_jw = *p_rotate++; - - temp_re = *(pData_in_2++) >> exp; - temp_im = *(pData_in_2++) >> exp; - - temp_re_32 = (cmplx_mul32_by_16(temp_re, temp_im, exp_jw)); - temp_im_32 = (cmplx_mul32_by_16(temp_im, -temp_re, exp_jw)); - - *(pData_out_1++) = - temp_re_32; - *(pData_out_2--) = temp_im_32; - *(pData_out_3++) = - temp_im_32; - *(pData_out_4--) = temp_re_32; - - pData_out_1++; - pData_out_2--; - pData_out_3++; - pData_out_4--; - - } - - return (exp + 1); -} |