| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * AAC decoder | ||
| 3 | * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org ) | ||
| 4 | * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com ) | ||
| 5 | * Copyright (c) 2008-2013 Alex Converse <alex.converse@gmail.com> | ||
| 6 | * | ||
| 7 | * AAC LATM decoder | ||
| 8 | * Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz> | ||
| 9 | * Copyright (c) 2010 Janne Grunau <janne-libav@jannau.net> | ||
| 10 | * | ||
| 11 | * AAC decoder fixed-point implementation | ||
| 12 | * Copyright (c) 2013 | ||
| 13 | * MIPS Technologies, Inc., California. | ||
| 14 | * | ||
| 15 | * This file is part of FFmpeg. | ||
| 16 | * | ||
| 17 | * FFmpeg is free software; you can redistribute it and/or | ||
| 18 | * modify it under the terms of the GNU Lesser General Public | ||
| 19 | * License as published by the Free Software Foundation; either | ||
| 20 | * version 2.1 of the License, or (at your option) any later version. | ||
| 21 | * | ||
| 22 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 25 | * Lesser General Public License for more details. | ||
| 26 | * | ||
| 27 | * You should have received a copy of the GNU Lesser General Public | ||
| 28 | * License along with FFmpeg; if not, write to the Free Software | ||
| 29 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 30 | */ | ||
| 31 | |||
| 32 | #ifndef AVCODEC_AAC_AACDEC_FLOAT_COUPLING_H | ||
| 33 | #define AVCODEC_AAC_AACDEC_FLOAT_COUPLING_H | ||
| 34 | |||
| 35 | #include "aacdec.h" | ||
| 36 | |||
| 37 | /** | ||
| 38 | * Apply dependent channel coupling (applied before IMDCT). | ||
| 39 | * | ||
| 40 | * @param index index into coupling gain array | ||
| 41 | */ | ||
| 42 | 2743 | static void AAC_RENAME(apply_dependent_coupling)(AACDecContext *ac, | |
| 43 | SingleChannelElement *target, | ||
| 44 | ChannelElement *cce, int index) | ||
| 45 | { | ||
| 46 | 2743 | IndividualChannelStream *ics = &cce->ch[0].ics; | |
| 47 | 2743 | const uint16_t *offsets = ics->swb_offset; | |
| 48 | 2743 | float *dest = target->coeffs; | |
| 49 | 2743 | const float *src = cce->ch[0].coeffs; | |
| 50 | 2743 | int g, i, group, k, idx = 0; | |
| 51 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2743 times.
|
2743 | if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP) { |
| 52 | ✗ | av_log(ac->avctx, AV_LOG_ERROR, | |
| 53 | "Dependent coupling is not supported together with LTP\n"); | ||
| 54 | ✗ | return; | |
| 55 | } | ||
| 56 |
2/2✓ Branch 0 taken 2743 times.
✓ Branch 1 taken 2743 times.
|
5486 | for (g = 0; g < ics->num_window_groups; g++) { |
| 57 |
2/2✓ Branch 0 taken 109720 times.
✓ Branch 1 taken 2743 times.
|
112463 | for (i = 0; i < ics->max_sfb; i++, idx++) { |
| 58 |
2/2✓ Branch 0 taken 5196 times.
✓ Branch 1 taken 104524 times.
|
109720 | if (cce->ch[0].band_type[idx] != ZERO_BT) { |
| 59 | 5196 | const float gain = cce->coup.gain[index][idx]; | |
| 60 |
2/2✓ Branch 0 taken 5196 times.
✓ Branch 1 taken 5196 times.
|
10392 | for (group = 0; group < ics->group_len[g]; group++) { |
| 61 |
2/2✓ Branch 0 taken 76768 times.
✓ Branch 1 taken 5196 times.
|
81964 | for (k = offsets[i]; k < offsets[i + 1]; k++) { |
| 62 | // FIXME: SIMDify | ||
| 63 | 76768 | dest[group * 128 + k] += gain * src[group * 128 + k]; | |
| 64 | } | ||
| 65 | } | ||
| 66 | } | ||
| 67 | } | ||
| 68 | 2743 | dest += ics->group_len[g] * 128; | |
| 69 | 2743 | src += ics->group_len[g] * 128; | |
| 70 | } | ||
| 71 | } | ||
| 72 | |||
| 73 | /** | ||
| 74 | * Apply independent channel coupling (applied after IMDCT). | ||
| 75 | * | ||
| 76 | * @param index index into coupling gain array | ||
| 77 | */ | ||
| 78 | 1315 | static void AAC_RENAME(apply_independent_coupling)(AACDecContext *ac, | |
| 79 | SingleChannelElement *target, | ||
| 80 | ChannelElement *cce, int index) | ||
| 81 | { | ||
| 82 | 1315 | const float gain = cce->coup.gain[index][0]; | |
| 83 | 1315 | const float *src = cce->ch[0].output; | |
| 84 | 1315 | float *dest = target->output; | |
| 85 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 1315 times.
|
1315 | const int len = 1024 << (ac->oc[1].m4ac.sbr == 1); |
| 86 | |||
| 87 | 1315 | ac->fdsp->vector_fmac_scalar(dest, src, gain, len); | |
| 88 | 1315 | } | |
| 89 | |||
| 90 | #endif /* AVCODEC_AAC_AACDEC_FLOAT_COUPLING_H */ | ||
| 91 |