blob: 28676ca8d599c3e218a701ec67519109256931b5
| 1 | /* |
| 2 | * AAC encoder quantization |
| 3 | * Copyright (C) 2015 Claudio Freire |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * AAC encoder quantization misc reusable function templates |
| 25 | * @author Claudio Freire ( klaussfreire gmail com ) |
| 26 | */ |
| 27 | |
| 28 | #ifndef AVCODEC_AACENC_QUANTIZATION_MISC_H |
| 29 | #define AVCODEC_AACENC_QUANTIZATION_MISC_H |
| 30 | |
| 31 | static inline float quantize_band_cost_cached(struct AACEncContext *s, int w, int g, const float *in, |
| 32 | const float *scaled, int size, int scale_idx, |
| 33 | int cb, const float lambda, const float uplim, |
| 34 | int *bits, float *energy, int rtz) |
| 35 | { |
| 36 | AACQuantizeBandCostCacheEntry *entry; |
| 37 | av_assert1(scale_idx >= 0 && scale_idx < 256); |
| 38 | entry = &s->quantize_band_cost_cache[scale_idx][w*16+g]; |
| 39 | if (entry->generation != s->quantize_band_cost_cache_generation || entry->cb != cb || entry->rtz != rtz) { |
| 40 | entry->rd = quantize_band_cost(s, in, scaled, size, scale_idx, |
| 41 | cb, lambda, uplim, &entry->bits, &entry->energy, rtz); |
| 42 | entry->cb = cb; |
| 43 | entry->rtz = rtz; |
| 44 | entry->generation = s->quantize_band_cost_cache_generation; |
| 45 | } |
| 46 | if (bits) |
| 47 | *bits = entry->bits; |
| 48 | if (energy) |
| 49 | *energy = entry->energy; |
| 50 | return entry->rd; |
| 51 | } |
| 52 | |
| 53 | #endif /* AVCODEC_AACENC_QUANTIZATION_MISC_H */ |
| 54 |