| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2015 Peter Meerwald <pmeerw@pmeerw.net> | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "g722dsp.h" | ||
| 22 | #include "mathops.h" | ||
| 23 | |||
| 24 | /* | ||
| 25 | * quadrature mirror filter (QMF) coefficients (ITU-T G.722 Table 11) inlined | ||
| 26 | * in code below: 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11 | ||
| 27 | */ | ||
| 28 | |||
| 29 | 270862 | static void g722_apply_qmf(const int16_t *prev_samples, int xout[2]) | |
| 30 | { | ||
| 31 | 270862 | xout[1] = MUL16(*prev_samples++, 3); | |
| 32 | 270862 | xout[0] = MUL16(*prev_samples++, -11); | |
| 33 | |||
| 34 | 270862 | MAC16(xout[1], *prev_samples++, -11); | |
| 35 | 270862 | MAC16(xout[0], *prev_samples++, 53); | |
| 36 | |||
| 37 | 270862 | MAC16(xout[1], *prev_samples++, 12); | |
| 38 | 270862 | MAC16(xout[0], *prev_samples++, -156); | |
| 39 | |||
| 40 | 270862 | MAC16(xout[1], *prev_samples++, 32); | |
| 41 | 270862 | MAC16(xout[0], *prev_samples++, 362); | |
| 42 | |||
| 43 | 270862 | MAC16(xout[1], *prev_samples++, -210); | |
| 44 | 270862 | MAC16(xout[0], *prev_samples++, -805); | |
| 45 | |||
| 46 | 270862 | MAC16(xout[1], *prev_samples++, 951); | |
| 47 | 270862 | MAC16(xout[0], *prev_samples++, 3876); | |
| 48 | |||
| 49 | 270862 | MAC16(xout[1], *prev_samples++, 3876); | |
| 50 | 270862 | MAC16(xout[0], *prev_samples++, 951); | |
| 51 | |||
| 52 | 270862 | MAC16(xout[1], *prev_samples++, -805); | |
| 53 | 270862 | MAC16(xout[0], *prev_samples++, -210); | |
| 54 | |||
| 55 | 270862 | MAC16(xout[1], *prev_samples++, 362); | |
| 56 | 270862 | MAC16(xout[0], *prev_samples++, 32); | |
| 57 | |||
| 58 | 270862 | MAC16(xout[1], *prev_samples++, -156); | |
| 59 | 270862 | MAC16(xout[0], *prev_samples++, 12); | |
| 60 | |||
| 61 | 270862 | MAC16(xout[1], *prev_samples++, 53); | |
| 62 | 270862 | MAC16(xout[0], *prev_samples++, -11); | |
| 63 | |||
| 64 | 270862 | MAC16(xout[1], *prev_samples++, -11); | |
| 65 | 270862 | MAC16(xout[0], *prev_samples++, 3); | |
| 66 | 270862 | } | |
| 67 | |||
| 68 | 18 | av_cold void ff_g722dsp_init(G722DSPContext *c) | |
| 69 | { | ||
| 70 | 18 | c->apply_qmf = g722_apply_qmf; | |
| 71 | |||
| 72 | #if ARCH_ARM | ||
| 73 | ff_g722dsp_init_arm(c); | ||
| 74 | #elif ARCH_RISCV | ||
| 75 | ff_g722dsp_init_riscv(c); | ||
| 76 | #elif ARCH_X86 | ||
| 77 | 18 | ff_g722dsp_init_x86(c); | |
| 78 | #endif | ||
| 79 | 18 | } | |
| 80 |