63 lines
2.4 KiB
Plaintext
63 lines
2.4 KiB
Plaintext
$OpenBSD: patch-libavcodec_aacenc_quantization_misc_h,v 1.2 2016/03/09 17:29:36 ajacoutot Exp $
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AAC encoder: memoize quantize_band_cost
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aacenc: use generational cache instead of resetting.
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--- libavcodec/aacenc_quantization_misc.h.orig Tue Mar 8 19:20:55 2016
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+++ libavcodec/aacenc_quantization_misc.h Tue Mar 8 19:23:47 2016
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@@ -0,0 +1,53 @@
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+/*
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+ * AAC encoder quantization
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+ * Copyright (C) 2015 Claudio Freire
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+ *
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+ * This file is part of FFmpeg.
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+ *
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+ * FFmpeg is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU Lesser General Public
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+ * License as published by the Free Software Foundation; either
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+ * version 2.1 of the License, or (at your option) any later version.
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+ *
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+ * FFmpeg is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * Lesser General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Lesser General Public
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+ * License along with FFmpeg; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+ */
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+
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+/**
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+ * @file
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+ * AAC encoder quantization misc reusable function templates
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+ * @author Claudio Freire ( klaussfreire gmail com )
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+ */
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+
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+#ifndef AVCODEC_AACENC_QUANTIZATION_MISC_H
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+#define AVCODEC_AACENC_QUANTIZATION_MISC_H
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+
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+static inline float quantize_band_cost_cached(struct AACEncContext *s, int w, int g, const float *in,
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+ const float *scaled, int size, int scale_idx,
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+ int cb, const float lambda, const float uplim,
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+ int *bits, float *energy, int rtz)
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+{
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+ AACQuantizeBandCostCacheEntry *entry;
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+ av_assert1(scale_idx >= 0 && scale_idx < 256);
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+ entry = &s->quantize_band_cost_cache[scale_idx][w*16+g];
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+ if (entry->generation != s->quantize_band_cost_cache_generation || entry->cb != cb || entry->rtz != rtz) {
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+ entry->rd = quantize_band_cost(s, in, scaled, size, scale_idx,
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+ cb, lambda, uplim, &entry->bits, &entry->energy, rtz);
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+ entry->cb = cb;
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+ entry->rtz = rtz;
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+ entry->generation = s->quantize_band_cost_cache_generation;
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+ }
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+ if (bits)
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+ *bits = entry->bits;
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+ if (energy)
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+ *energy = entry->energy;
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+ return entry->rd;
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+}
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+
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+#endif /* AVCODEC_AACENC_QUANTIZATION_MISC_H */
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