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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /media/ffvpx/libavcodec/ratecontrol.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/ffvpx/libavcodec/ratecontrol.h')
-rw-r--r--media/ffvpx/libavcodec/ratecontrol.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/ratecontrol.h b/media/ffvpx/libavcodec/ratecontrol.h
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+/*
+ * Ratecontrol
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_RATECONTROL_H
+#define AVCODEC_RATECONTROL_H
+
+/**
+ * @file
+ * ratecontrol header.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include "libavutil/eval.h"
+
+typedef struct Predictor{
+ double coeff;
+ double count;
+ double decay;
+} Predictor;
+
+typedef struct RateControlEntry{
+ int pict_type;
+ float qscale;
+ int mv_bits;
+ int i_tex_bits;
+ int p_tex_bits;
+ int misc_bits;
+ int header_bits;
+ uint64_t expected_bits;
+ int new_pict_type;
+ float new_qscale;
+ int64_t mc_mb_var_sum;
+ int64_t mb_var_sum;
+ int i_count;
+ int skip_count;
+ int f_code;
+ int b_code;
+}RateControlEntry;
+
+/**
+ * rate control context.
+ */
+typedef struct RateControlContext{
+ int num_entries; ///< number of RateControlEntries
+ RateControlEntry *entry;
+ double buffer_index; ///< amount of bits in the video/audio buffer
+ Predictor pred[5];
+ double short_term_qsum; ///< sum of recent qscales
+ double short_term_qcount; ///< count of recent qscales
+ double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
+ double pass1_wanted_bits; ///< bits which should have been output by the pass1 code (including complexity init)
+ double last_qscale;
+ double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
+ int64_t last_mc_mb_var_sum;
+ int64_t last_mb_var_sum;
+ uint64_t i_cplx_sum[5];
+ uint64_t p_cplx_sum[5];
+ uint64_t mv_bits_sum[5];
+ uint64_t qscale_sum[5];
+ int frame_count[5];
+ int last_non_b_pict_type;
+
+ AVExpr * rc_eq_eval;
+}RateControlContext;
+
+struct MpegEncContext;
+
+/* rate control */
+int ff_rate_control_init(struct MpegEncContext *s);
+float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
+void ff_write_pass1_stats(struct MpegEncContext *s);
+void ff_rate_control_uninit(struct MpegEncContext *s);
+int ff_vbv_update(struct MpegEncContext *s, int frame_size);
+void ff_get_2pass_fcode(struct MpegEncContext *s);
+
+#endif /* AVCODEC_RATECONTROL_H */