| /* |
| * Bluetooth low-complexity, subband codec (SBC) |
| * |
| * Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org> |
| * Copyright (C) 2008-2010 Nokia Corporation |
| * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> |
| * Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch> |
| * Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * SBC ARMv6 optimization for some basic "building bricks" |
| */ |
| |
| #include "libavutil/cpu.h" |
| #include "libavutil/arm/cpu.h" |
| #include "libavcodec/sbcdsp.h" |
| |
| void ff_sbc_analyze_4_armv6(const int16_t *in, int32_t *out, const int16_t *consts); |
| void ff_sbc_analyze_8_armv6(const int16_t *in, int32_t *out, const int16_t *consts); |
| |
| void ff_sbc_analyze_4_neon(const int16_t *in, int32_t *out, const int16_t *consts); |
| void ff_sbc_analyze_8_neon(const int16_t *in, int32_t *out, const int16_t *consts); |
| void ff_sbc_calc_scalefactors_neon(int32_t sb_sample_f[16][2][8], |
| uint32_t scale_factor[2][8], |
| int blocks, int channels, int subbands); |
| int ff_sbc_calc_scalefactors_j_neon(int32_t sb_sample_f[16][2][8], |
| uint32_t scale_factor[2][8], |
| int blocks, int subbands); |
| int ff_sbc_enc_process_input_4s_neon(int position, const uint8_t *pcm, |
| int16_t X[2][SBC_X_BUFFER_SIZE], |
| int nsamples, int nchannels); |
| int ff_sbc_enc_process_input_8s_neon(int position, const uint8_t *pcm, |
| int16_t X[2][SBC_X_BUFFER_SIZE], |
| int nsamples, int nchannels); |
| |
| DECLARE_ALIGNED(SBC_ALIGN, int32_t, ff_sbcdsp_joint_bits_mask)[8] = { |
| 8, 4, 2, 1, 128, 64, 32, 16 |
| }; |
| |
| #if HAVE_BIGENDIAN |
| #define PERM(a, b, c, d) { \ |
| (a * 2) + 1, (a * 2) + 0, \ |
| (b * 2) + 1, (b * 2) + 0, \ |
| (c * 2) + 1, (c * 2) + 0, \ |
| (d * 2) + 1, (d * 2) + 0 \ |
| } |
| #else |
| #define PERM(a, b, c, d) { \ |
| (a * 2) + 0, (a * 2) + 1, \ |
| (b * 2) + 0, (b * 2) + 1, \ |
| (c * 2) + 0, (c * 2) + 1, \ |
| (d * 2) + 0, (d * 2) + 1 \ |
| } |
| #endif |
| |
| DECLARE_ALIGNED(SBC_ALIGN, uint8_t, ff_sbc_input_perm_4)[2][8] = { |
| PERM(7, 3, 6, 4), |
| PERM(0, 2, 1, 5) |
| }; |
| |
| DECLARE_ALIGNED(SBC_ALIGN, uint8_t, ff_sbc_input_perm_8)[4][8] = { |
| PERM(15, 7, 14, 8), |
| PERM(13, 9, 12, 10), |
| PERM(11, 3, 6, 0), |
| PERM( 5, 1, 4, 2) |
| }; |
| |
| av_cold void ff_sbcdsp_init_arm(SBCDSPContext *s) |
| { |
| int cpu_flags = av_get_cpu_flags(); |
| |
| if (have_armv6(cpu_flags)) { |
| s->sbc_analyze_4 = ff_sbc_analyze_4_armv6; |
| s->sbc_analyze_8 = ff_sbc_analyze_8_armv6; |
| } |
| |
| if (have_neon(cpu_flags)) { |
| s->sbc_analyze_4 = ff_sbc_analyze_4_neon; |
| s->sbc_analyze_8 = ff_sbc_analyze_8_neon; |
| s->sbc_calc_scalefactors = ff_sbc_calc_scalefactors_neon; |
| s->sbc_calc_scalefactors_j = ff_sbc_calc_scalefactors_j_neon; |
| if (s->increment != 1) { |
| s->sbc_enc_process_input_4s = ff_sbc_enc_process_input_4s_neon; |
| s->sbc_enc_process_input_8s = ff_sbc_enc_process_input_8s_neon; |
| } |
| } |
| } |