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FFmpeg/libavcodec/mpegvideoenc.h
Andreas Rheinhardt 505510acda avcodec/mpegvideo: Move parent to MPVEncContext 
This is more type-safe and avoids having parent contexts
when unnecessary.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-05-16 01:37:35 +02:00

398 lines
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/*
* Generic DCT based hybrid video encoder
* 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
*/
/**
* @file
* mpegvideo header.
*/
#ifndef AVCODEC_MPEGVIDEOENC_H
#define AVCODEC_MPEGVIDEOENC_H
#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "fdctdsp.h"
#include "motion_est.h"
#include "mpegvideo.h"
#include "mpegvideoencdsp.h"
#include "pixblockdsp.h"
#include "put_bits.h"
#include "ratecontrol.h"
#define MPVENC_MAX_B_FRAMES 16
typedef struct MPVEncContext {
MpegEncContext c; ///< the common base context
/** bit output */
PutBitContext pb;
unsigned int lambda; ///< Lagrange multiplier used in rate distortion
unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
int *lambda_table;
int adaptive_quant; ///< use adaptive quantization
int dquant; ///< qscale difference to prev qscale
int skipdct; ///< skip dct and code zero residual
int quantizer_noise_shaping;
int luma_elim_threshold;
int chroma_elim_threshold;
int mpv_flags; ///< flags set by private options
/// Bitfield containing information which frames to reconstruct.
int frame_reconstruction_bitfield;
/**
* Reference to the source picture.
*/
AVFrame *new_pic;
struct MPVMainEncContext *parent;
FDCTDSPContext fdsp;
MpegvideoEncDSPContext mpvencdsp;
PixblockDSPContext pdsp;
MotionEstContext me;
int f_code; ///< forward MV resolution
int b_code; ///< backward MV resolution for B-frames
int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) P-frame
int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode B-frame
int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode B-frame
int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame
int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame
int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode B-frame
int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame
uint8_t (*p_field_select_table[2]); ///< Only the first element is allocated
uint8_t (*b_field_select_table[2][2]); ///< allocated jointly with p_field_select_table
uint16_t *mb_type; ///< Table for candidate MB types
uint16_t *mb_var; ///< Table for MB variances
uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
uint8_t *mb_mean; ///< Table for MB luminance
uint64_t encoding_error[MPV_MAX_PLANES];
int intra_quant_bias; ///< bias for the quantizer
int inter_quant_bias; ///< bias for the quantizer
int min_qcoeff; ///< minimum encodable coefficient
int max_qcoeff; ///< maximum encodable coefficient
int ac_esc_length; ///< num of bits needed to encode the longest esc
const uint8_t *intra_ac_vlc_length;
const uint8_t *intra_ac_vlc_last_length;
const uint8_t *intra_chroma_ac_vlc_length;
const uint8_t *intra_chroma_ac_vlc_last_length;
const uint8_t *inter_ac_vlc_length;
const uint8_t *inter_ac_vlc_last_length;
const uint8_t *luma_dc_vlc_length;
int coded_score[12];
/** precomputed matrix (combine qscale and DCT renorm) */
int (*q_intra_matrix)[64];
int (*q_chroma_intra_matrix)[64];
int (*q_inter_matrix)[64];
/** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
uint16_t (*q_intra_matrix16)[2][64];
uint16_t (*q_chroma_intra_matrix16)[2][64];
uint16_t (*q_inter_matrix16)[2][64];
/* noise reduction */
void (*denoise_dct)(struct MPVEncContext *s, int16_t *block);
int (*dct_error_sum)[64];
int dct_count[2];
uint16_t (*dct_offset)[64];
/* statistics, used for 2-pass encoding */
int mv_bits;
int i_tex_bits;
int p_tex_bits;
int i_count;
int misc_bits; ///< cbp, mb_type
int last_bits; ///< temp var used for calculating the above vars
/* H.263 specific */
int mb_info; ///< interval for outputting info about mb offsets as side data
int prev_mb_info, last_mb_info;
int mb_info_size;
uint8_t *mb_info_ptr;
/* MJPEG specific */
struct MJpegContext *mjpeg_ctx;
int esc_pos;
/* MPEG-1 specific */
int last_mv_dir; ///< last mv_dir, used for B-frame encoding
/* MPEG-4 specific */
PutBitContext tex_pb; ///< used for data partitioned VOPs
PutBitContext pb2; ///< used for data partitioned VOPs
/* MSMPEG4 specific */
int esc3_level_length;
/* RTP specific */
int rtp_mode;
int rtp_payload_size;
int error_rate;
uint8_t *ptr_lastgob;
void (*encode_mb)(struct MPVEncContext *s, int16_t block[][64],
int motion_x, int motion_y);
int (*dct_quantize)(struct MPVEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
me_cmp_func ildct_cmp[2]; ///< 0 = intra, 1 = non-intra
me_cmp_func n_sse_cmp[2]; ///< either SSE or NSSE cmp func
me_cmp_func sad_cmp[2];
me_cmp_func sse_cmp[2];
int (*sum_abs_dctelem)(const int16_t *block);
int intra_penalty;
} MPVEncContext;
typedef struct MPVMainEncContext {
MPVEncContext s; ///< The main slicecontext
int intra_only; ///< if true, only intra pictures are generated
int gop_size;
int max_b_frames; ///< max number of B-frames
int picture_in_gop_number; ///< 0-> first pic in gop, ...
int input_picture_number; ///< used to set pic->display_picture_number
int coded_picture_number; ///< used to set pic->coded_picture_number
MPVPicture *input_picture[MPVENC_MAX_B_FRAMES + 1]; ///< next pictures in display order
MPVPicture *reordered_input_picture[MPVENC_MAX_B_FRAMES + 1]; ///< next pictures in coded order
int64_t user_specified_pts; ///< last non-zero pts from user-supplied AVFrame
/**
* pts difference between the first and second input frame, used for
* calculating dts of the first frame when there's a delay */
int64_t dts_delta;
/**
* reordered pts to be used as dts for the next output frame when there's
* a delay */
int64_t reordered_pts;
/// temporary frames used by b_frame_strategy = 2
AVFrame *tmp_frames[MPVENC_MAX_B_FRAMES + 2];
int b_frame_strategy;
int b_sensitivity;
int brd_scale;
int scenechange_threshold;
int noise_reduction;
float border_masking;
int lmin, lmax;
int vbv_ignore_qmax;
/* MPEG-1/2 specific */
int vbv_delay_pos; ///< offset of vbv_delay in the bitstream
const uint8_t *fcode_tab; ///< smallest fcode needed for each MV
/* frame skip options */
int frame_skip_threshold;
int frame_skip_factor;
int frame_skip_exp;
int frame_skip_cmp;
me_cmp_func frame_skip_cmp_fn;
int (*encode_picture_header)(struct MPVMainEncContext *m);
/* bit rate control */
int64_t bit_rate;
int64_t total_bits;
int frame_bits; ///< bits used for the current frame
int header_bits;
int stuffing_bits; ///< bits used for stuffing
int next_lambda; ///< next lambda used for retrying to encode a frame
int fixed_qscale; ///< fixed qscale if non zero
int last_lambda_for[5]; ///< last lambda for a specific pict type
int last_pict_type; //FIXME removes
int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol
RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
int me_penalty_compensation;
int me_pre; ///< prepass for motion estimation
int64_t mb_var_sum; ///< sum of MB variance for current frame
int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
char *me_map_base; ///< backs MotionEstContext.(map|score_map)
char *dct_error_sum_base; ///< backs dct_error_sum
int16_t (*mv_table_base)[2];
} MPVMainEncContext;
static inline const MPVMainEncContext *slice_to_mainenc(const MPVEncContext *s)
{
#ifdef NO_SLICE_THREADING_HERE
av_assert2(s->c.slice_context_count <= 1 &&
!(s->c.avctx->codec->capabilities & AV_CODEC_CAP_SLICE_THREADS));
return (const MPVMainEncContext*)s;
#else
return s->parent;
#endif
}
#define MAX_FCODE 7
#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
#define INPLACE_OFFSET 16
/* MB types for encoding */
#define CANDIDATE_MB_TYPE_INTRA (1 << 0)
#define CANDIDATE_MB_TYPE_INTER (1 << 1)
#define CANDIDATE_MB_TYPE_INTER4V (1 << 2)
#define CANDIDATE_MB_TYPE_SKIPPED (1 << 3)
#define CANDIDATE_MB_TYPE_DIRECT (1 << 4)
#define CANDIDATE_MB_TYPE_FORWARD (1 << 5)
#define CANDIDATE_MB_TYPE_BACKWARD (1 << 6)
#define CANDIDATE_MB_TYPE_BIDIR (1 << 7)
#define CANDIDATE_MB_TYPE_INTER_I (1 << 8)
#define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9)
#define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10)
#define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11)
#define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12)
/* mpegvideo_enc common options */
#define FF_MPV_FLAG_SKIP_RD 0x0001
#define FF_MPV_FLAG_STRICT_GOP 0x0002
#define FF_MPV_FLAG_QP_RD 0x0004
#define FF_MPV_FLAG_CBP_RD 0x0008
#define FF_MPV_FLAG_NAQ 0x0010
#define FF_MPV_FLAG_MV0 0x0020
#define FF_MPV_OPT_CMP_FUNC \
{ "sad", "Sum of absolute differences, fast", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "sse", "Sum of squared errors", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "satd", "Sum of absolute Hadamard transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SATD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "dct", "Sum of absolute DCT transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "psnr", "Sum of squared quantization errors, low quality", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_PSNR }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "bit", "Number of bits needed for the block", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_BIT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "rd", "Rate distortion optimal, slow", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_RD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "zero", "Zero", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_ZERO }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "vsad", "Sum of absolute vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "vsse", "Sum of squared vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "nsse", "Noise preserving sum of squared differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_NSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "dct264", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT264 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "dctmax", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "chroma", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_CHROMA }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{ "msad", "Sum of absolute differences, median predicted", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_MEDIAN_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }
#define FF_MPV_OFFSET(x) offsetof(MPVEncContext, x)
#define FF_MPV_MAIN_OFFSET(x) offsetof(MPVMainEncContext, x)
#define FF_RC_OFFSET(x) offsetof(MPVMainEncContext, rc_context.x)
#define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
#define FF_MPV_COMMON_OPTS \
FF_MPV_OPT_CMP_FUNC, \
{ "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{ "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{ "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{ "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{ "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{ "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{ "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
{ "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
{ "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
{ "error_rate", "Simulate errors in the bitstream to test error concealment.", \
FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
{"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", \
FF_RC_OFFSET(qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS}, \
{"rc_qmod_amp", "experimental quantizer modulation", FF_RC_OFFSET(qmod_amp), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
{"rc_qmod_freq", "experimental quantizer modulation", FF_RC_OFFSET(qmod_freq), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS}, \
{"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " \
"defined in the section 'Expression Evaluation', the following functions are available: " \
"bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " \
"fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", \
FF_RC_OFFSET(rc_eq), AV_OPT_TYPE_STRING, .flags = FF_MPV_OPT_FLAGS }, \
{"rc_init_cplx", "initial complexity for 1-pass encoding", FF_RC_OFFSET(initial_cplx), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
{"rc_buf_aggressivity", "currently useless", FF_RC_OFFSET(buffer_aggressivity), AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
{"border_mask", "increase the quantizer for macroblocks close to borders", FF_MPV_MAIN_OFFSET(border_masking), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
{"lmin", "minimum Lagrange factor (VBR)", FF_MPV_MAIN_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 = 2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"lmax", "maximum Lagrange factor (VBR)", FF_MPV_MAIN_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"skip_threshold", "Frame skip threshold", FF_MPV_MAIN_OFFSET(frame_skip_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"skip_factor", "Frame skip factor", FF_MPV_MAIN_OFFSET(frame_skip_factor), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"skip_exp", "Frame skip exponent", FF_MPV_MAIN_OFFSET(frame_skip_exp), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"skip_cmp", "Frame skip compare function", FF_MPV_MAIN_OFFSET(frame_skip_cmp), AV_OPT_TYPE_INT, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
{"noise_reduction", "Noise reduction", FF_MPV_MAIN_OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"ps", "RTP payload size in bytes", FF_MPV_OFFSET(rtp_payload_size), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
#define FF_MPV_COMMON_BFRAME_OPTS \
{"b_strategy", "Strategy to choose between I/P/B-frames", FF_MPV_MAIN_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FF_MPV_OPT_FLAGS }, \
{"b_sensitivity", "Adjust sensitivity of b_frame_strategy 1", FF_MPV_MAIN_OFFSET(b_sensitivity), AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"brd_scale", "Downscale frames for dynamic B-frame decision", FF_MPV_MAIN_OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 3, FF_MPV_OPT_FLAGS },
#define FF_MPV_COMMON_MOTION_EST_OPTS \
{ "mv0", "always try a mb with mv=<0,0>", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
{"motion_est", "motion estimation algorithm", FF_MPV_OFFSET(me.motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
{ "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
{ "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
{ "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
{"mepc", "Motion estimation bitrate penalty compensation (1.0 = 256)", FF_MPV_MAIN_OFFSET(me_penalty_compensation), AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"mepre", "pre motion estimation", FF_MPV_MAIN_OFFSET(me_pre), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
{"intra_penalty", "Penalty for intra blocks in block decision", FF_MPV_OFFSET(intra_penalty), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX/2, FF_MPV_OPT_FLAGS }, \
{"sc_threshold", "Scene change threshold", FF_MPV_MAIN_OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
extern const AVClass ff_mpv_enc_class;
int ff_mpv_encode_init(AVCodecContext *avctx);
int ff_mpv_encode_end(AVCodecContext *avctx);
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet);
int ff_mpv_reallocate_putbitbuffer(MPVEncContext *s, size_t threshold, size_t size_increase);
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
void ff_dct_encode_init(MPVEncContext *s);
void ff_mpvenc_dct_init_mips(MPVEncContext *s);
void ff_dct_encode_init_x86(MPVEncContext *s);
void ff_convert_matrix(MPVEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
void ff_block_permute(int16_t *block, const uint8_t *permutation,
const uint8_t *scantable, int last);
static inline int get_bits_diff(MPVEncContext *s)
{
const int bits = put_bits_count(&s->pb);
const int last = s->last_bits;
s->last_bits = bits;
return bits - last;
}
#endif
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