diff options
Diffstat (limited to 'libavcodec/sbrdsp_template.c')
-rw-r--r-- | libavcodec/sbrdsp_template.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/libavcodec/sbrdsp_template.c b/libavcodec/sbrdsp_template.c new file mode 100644 index 0000000000..b649dfd7ee --- /dev/null +++ b/libavcodec/sbrdsp_template.c @@ -0,0 +1,97 @@ +/* + * AAC Spectral Band Replication decoding functions + * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl ) + * Copyright (c) 2009-2010 Alex Converse <alex.converse@gmail.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 + */ + +static void sbr_sum64x5_c(INTFLOAT *z) +{ + int k; + for (k = 0; k < 64; k++) { + INTFLOAT f = z[k] + z[k + 64] + z[k + 128] + z[k + 192] + z[k + 256]; + z[k] = f; + } +} + +static void sbr_qmf_deint_bfly_c(INTFLOAT *v, const INTFLOAT *src0, const INTFLOAT *src1) +{ + int i; + for (i = 0; i < 64; i++) { + v[ i] = AAC_SRA_R((src0[i] - src1[63 - i]), 5); + v[127 - i] = AAC_SRA_R((src0[i] + src1[63 - i]), 5); + } +} + +static void sbr_hf_apply_noise_0(INTFLOAT (*Y)[2], const AAC_FLOAT *s_m, + const AAC_FLOAT *q_filt, int noise, + int kx, int m_max) +{ + sbr_hf_apply_noise(Y, s_m, q_filt, noise, (INTFLOAT)1.0, (INTFLOAT)0.0, m_max); +} + +static void sbr_hf_apply_noise_1(INTFLOAT (*Y)[2], const AAC_FLOAT *s_m, + const AAC_FLOAT *q_filt, int noise, + int kx, int m_max) +{ + INTFLOAT phi_sign = 1 - 2 * (kx & 1); + sbr_hf_apply_noise(Y, s_m, q_filt, noise, (INTFLOAT)0.0, phi_sign, m_max); +} + +static void sbr_hf_apply_noise_2(INTFLOAT (*Y)[2], const AAC_FLOAT *s_m, + const AAC_FLOAT *q_filt, int noise, + int kx, int m_max) +{ + sbr_hf_apply_noise(Y, s_m, q_filt, noise, (INTFLOAT)-1.0, (INTFLOAT)0.0, m_max); +} + +static void sbr_hf_apply_noise_3(INTFLOAT (*Y)[2], const AAC_FLOAT *s_m, + const AAC_FLOAT *q_filt, int noise, + int kx, int m_max) +{ + INTFLOAT phi_sign = 1 - 2 * (kx & 1); + sbr_hf_apply_noise(Y, s_m, q_filt, noise, (INTFLOAT)0.0, -phi_sign, m_max); +} + +av_cold void AAC_RENAME(ff_sbrdsp_init)(SBRDSPContext *s) +{ + s->sum64x5 = sbr_sum64x5_c; + s->sum_square = sbr_sum_square_c; + s->neg_odd_64 = sbr_neg_odd_64_c; + s->qmf_pre_shuffle = sbr_qmf_pre_shuffle_c; + s->qmf_post_shuffle = sbr_qmf_post_shuffle_c; + s->qmf_deint_neg = sbr_qmf_deint_neg_c; + s->qmf_deint_bfly = sbr_qmf_deint_bfly_c; + s->autocorrelate = sbr_autocorrelate_c; + s->hf_gen = sbr_hf_gen_c; + s->hf_g_filt = sbr_hf_g_filt_c; + + s->hf_apply_noise[0] = sbr_hf_apply_noise_0; + s->hf_apply_noise[1] = sbr_hf_apply_noise_1; + s->hf_apply_noise[2] = sbr_hf_apply_noise_2; + s->hf_apply_noise[3] = sbr_hf_apply_noise_3; + +#if !USE_FIXED + if (ARCH_ARM) + ff_sbrdsp_init_arm(s); + if (ARCH_X86) + ff_sbrdsp_init_x86(s); + if (ARCH_MIPS) + ff_sbrdsp_init_mips(s); +#endif /* !USE_FIXED */ +} |