diff options
Diffstat (limited to 'libavcodec/arm/sbcdsp_init_arm.c')
| -rw-r--r-- | libavcodec/arm/sbcdsp_init_arm.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/libavcodec/arm/sbcdsp_init_arm.c b/libavcodec/arm/sbcdsp_init_arm.c new file mode 100644 index 0000000000..6bf7e729ef --- /dev/null +++ b/libavcodec/arm/sbcdsp_init_arm.c @@ -0,0 +1,105 @@ +/* + * 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; + } + } +} |