diff options
Diffstat (limited to 'third_party/aom/av1/encoder/ratectrl_xiph.h')
| -rw-r--r-- | third_party/aom/av1/encoder/ratectrl_xiph.h | 200 |
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 |