summaryrefslogtreecommitdiffstats
path: root/third_party/aom/av1/encoder/ratectrl_xiph.h
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/aom/av1/encoder/ratectrl_xiph.h')
-rw-r--r--third_party/aom/av1/encoder/ratectrl_xiph.h200
1 files changed, 0 insertions, 200 deletions
diff --git a/third_party/aom/av1/encoder/ratectrl_xiph.h b/third_party/aom/av1/encoder/ratectrl_xiph.h
index a4a9052fa..e69de29bb 100644
--- a/third_party/aom/av1/encoder/ratectrl_xiph.h
+++ b/third_party/aom/av1/encoder/ratectrl_xiph.h
@@ -1,200 +0,0 @@
-/*
- * Copyright (c) 2001-2017, Alliance for Open Media. All rights reserved
- *
- * This source code is subject to the terms of the BSD 2 Clause License and
- * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
- * was not distributed with this source code in the LICENSE file, you can
- * obtain it at www.aomedia.org/license/software. If the Alliance for Open
- * Media Patent License 1.0 was not distributed with this source code in the
- * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
- */
-
-#if !defined(_ratectrl_xiph_H)
-#define _ratectrl_xiph_H (1)
-
-#include "av1/encoder/ratectrl.h"
-#include "aom/internal/aom_codec_internal.h"
-
-/*Frame types.*/
-#define OD_I_FRAME (0)
-#define OD_P_FRAME (1)
-#define OD_GOLDEN_P_FRAME (2)
-#define OD_ALTREF_P_FRAME (3)
-
-#define OD_FRAME_NSUBTYPES (OD_ALTREF_P_FRAME + 1)
-
-/* Periodic boost (in between golden frames) strength - lower is more */
-#define OD_PERIODIC_BOOST_DIV (10)
-
-/* Constants for frame QP modulation <- tweak these
- * Adjusts how the rate control system decides the quantizers per frame
- * (sub)type */
-#define OD_MQP_I (0.98)
-#define OD_MQP_P (1.06)
-#define OD_MQP_GP (0.99)
-#define OD_MQP_AP (0.92)
-#define OD_DQP_I (-2)
-#define OD_DQP_P (0)
-#define OD_DQP_GP (-2)
-#define OD_DQP_AP (-2)
-
-/*Fractional_coded_quantizer ~=
- log2(quantizer / (1 << OD_COEFF_SHIFT))*6.307 + 6.235*/
-/*Base/scale factor for linear quantizer to fractional coded quantizer
- conversion (6.307 * 2^12) */
-#define OD_LOG_QUANTIZER_BASE_Q12 (0x0064EB)
-/*Inverse of above scale factor.*/
-#define OD_LOG_QUANTIZER_EXP_Q12 (0x000289)
-/*Offset for linear quantizer to fractional coded quantizer
- conversion (6.235 * 2^45) */
-#define OD_LOG_QUANTIZER_OFFSET_Q45 (0x0000C7851EB851ECLL)
-
-#define OD_RC_2PASS_MAGIC (0x53015641) /* [A, V, 1, S] in little endian */
-#define OD_RC_2PASS_SUMMARY_SZ (4 + 1 + (4 + 4 + 8) * OD_FRAME_NSUBTYPES)
-#define OD_RC_2PASS_PACKET_SZ (1 + 4)
-#define OD_RC_2PASS_MIN (OD_RC_2PASS_PACKET_SZ + OD_RC_2PASS_SUMMARY_SZ)
-#define OD_RC_2PASS_VERSION (1)
-
-/*A 2nd order low-pass Bessel follower.
- We use this for rate control because it has fast reaction time, but is
- critically damped.*/
-typedef struct od_iir_bessel2 {
- int32_t c[2];
- int64_t g;
- int32_t x[2];
- int32_t y[2];
-} od_iir_bessel2;
-
-/* The 2-pass metrics associated with a single frame. */
-typedef struct od_frame_metrics {
- /*The log base 2 of the scale factor for this frame in Q24 format.*/
- int64_t log_scale;
- /*The frame type from pass 1.*/
- unsigned frame_type : 1;
-} od_frame_metrics;
-
-/*Rate control setup and working state information.*/
-typedef struct od_rc_state {
- /* Image format */
- int frame_width;
- int frame_height;
- int bit_depth;
-
- /* Framerate */
- double framerate;
- /* Keyframe rate */
- int keyframe_rate;
- /* Golden frame period */
- int goldenframe_rate;
- /* Altref frame period */
- int altref_rate;
- /*The target bit-rate in bits per second.*/
- int64_t target_bitrate;
- /* Quality level for non-bitrate-targeting */
- int quality;
- /* Copied from oxcf->frame_periodic_boost */
- int periodic_boosts;
- /* Max Q */
- int maxq;
- /* Min Q */
- int minq;
- /* Quantizer to use for the first pass */
- int firstpass_quant;
-
- /* 2-pass metrics */
- od_frame_metrics cur_metrics;
-
- /* 2-pass state */
- int64_t scale_sum[OD_FRAME_NSUBTYPES];
- int nframes[OD_FRAME_NSUBTYPES];
-
- /* 2-pass bytestream reader/writer context */
- uint8_t *twopass_buffer;
- int twopass_buffer_bytes;
-
- /* Pass 1 stats packet storage */
- uint8_t firstpass_buffer[OD_RC_2PASS_SUMMARY_SZ];
-
- /* Every state packet from the first pass in a single buffer */
- uint8_t *twopass_allframes_buf;
- size_t twopass_allframes_buf_size;
-
- /* Actual returned quantizer */
- int target_quantizer;
- /*The full-precision, unmodulated quantizer upon which
- our modulated quantizers are based.*/
- int base_quantizer;
-
- /* Increments by 1 for each frame. */
- int64_t cur_frame;
-
- /* End of input flag */
- int end_of_input;
- /* Closed GOP flag */
- int closed_gop;
- /*The number of frames over which to distribute the reservoir usage.*/
- int reservoir_frame_delay;
- /*Will we drop frames to meet bitrate target?*/
- unsigned char drop_frames;
- /*Do we respect the maximum reservoir fullness?*/
- unsigned char cap_overflow;
- /*Can the reservoir go negative?*/
- unsigned char cap_underflow;
- /*Two-pass mode state.
- 0 => 1-pass encoding.
- 1 => 1st pass of 2-pass encoding.
- 2 => 2nd pass of 2-pass encoding.*/
- int twopass_state;
- /*The log of the number of pixels in a frame in Q57 format.*/
- int64_t log_npixels;
- /*The target average bits per frame.*/
- int64_t bits_per_frame;
- /*The current bit reservoir fullness (bits available to be used).*/
- int64_t reservoir_fullness;
- /*The target buffer fullness.
- This is where we'd like to be by the last keyframe the appears in the next
- buf_delay frames.*/
- int64_t reservoir_target;
- /*The maximum buffer fullness (total size of the buffer).*/
- int64_t reservoir_max;
- /*The log of estimated scale factor for the rate model in Q57 format.*/
- int64_t log_scale[OD_FRAME_NSUBTYPES];
- /*The exponent used in the rate model in Q8 format.*/
- unsigned exp[OD_FRAME_NSUBTYPES];
- /*The log of an estimated scale factor used to obtain the real framerate, for
- VFR sources or, e.g., 12 fps content doubled to 24 fps, etc.*/
- int64_t log_drop_scale[OD_FRAME_NSUBTYPES];
- /*The total drop count from the previous frame.*/
- uint32_t prev_drop_count[OD_FRAME_NSUBTYPES];
- /*Second-order lowpass filters to track scale and VFR/drops.*/
- od_iir_bessel2 scalefilter[OD_FRAME_NSUBTYPES];
- od_iir_bessel2 vfrfilter[OD_FRAME_NSUBTYPES];
- int frame_count[OD_FRAME_NSUBTYPES];
- int inter_p_delay;
- int inter_delay_target;
- /*The total accumulated estimation bias.*/
- int64_t rate_bias;
-} od_rc_state;
-
-int od_enc_rc_init(od_rc_state *rc, int64_t bitrate, int delay_ms);
-
-int od_enc_rc_select_quantizers_and_lambdas(od_rc_state *rc,
- int is_golden_frame,
- int is_altref_frame, int frame_type,
- int *bottom_idx, int *top_idx);
-
-/* Returns 1 if the frame should be dropped */
-int od_enc_rc_update_state(od_rc_state *rc, int64_t bits, int is_golden_frame,
- int is_altref_frame, int frame_type, int droppable);
-
-int od_frame_type(od_rc_state *rc, int64_t coding_frame_count, int *is_golden,
- int *is_altref, int64_t *ip_count);
-
-int od_enc_rc_resize(od_rc_state *rc);
-
-int od_enc_rc_2pass_out(od_rc_state *rc, struct aom_codec_pkt_list *pkt_list,
- int summary);
-
-int od_enc_rc_2pass_in(od_rc_state *rc);
-
-#endif