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FFmpeg/libavcodec/libx264.c

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/*
* H.264 encoding using the x264 library
* Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
*
* 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
*/
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include <x264.h>
#include <float.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct X264Context {
AVClass *class;
x264_param_t params;
x264_t *enc;
x264_picture_t pic;
uint8_t *sei;
int sei_size;
AVFrame out_pic;
char *preset;
char *tune;
char *profile;
char *level;
int fastfirstpass;
char *stats;
char *wpredp;
char *x264opts;
float crf;
float crf_max;
int cqp;
int aq_mode;
float aq_strength;
char *psy_rd;
int psy;
int rc_lookahead;
int weightp;
int weightb;
int ssim;
int intra_refresh;
int b_bias;
int b_pyramid;
int mixed_refs;
int dct8x8;
int fast_pskip;
int aud;
int mbtree;
char *deblock;
float cplxblur;
char *partitions;
int direct_pred;
int slice_max_size;
} X264Context;
static void X264_log(void *p, int level, const char *fmt, va_list args)
{
static const int level_map[] = {
[X264_LOG_ERROR] = AV_LOG_ERROR,
[X264_LOG_WARNING] = AV_LOG_WARNING,
[X264_LOG_INFO] = AV_LOG_INFO,
[X264_LOG_DEBUG] = AV_LOG_DEBUG
};
if (level < 0 || level > X264_LOG_DEBUG)
return;
av_vlog(p, level_map[level], fmt, args);
}
static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size,
x264_nal_t *nals, int nnal, int skip_sei)
{
X264Context *x4 = ctx->priv_data;
uint8_t *p = buf;
int i;
/* Write the SEI as part of the first frame. */
if (x4->sei_size > 0 && nnal > 0) {
if (x4->sei_size > size) {
av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
return -1;
}
memcpy(p, x4->sei, x4->sei_size);
p += x4->sei_size;
x4->sei_size = 0;
av_freep(&x4->sei);
}
for (i = 0; i < nnal; i++){
/* Don't put the SEI in extradata. */
if (skip_sei && nals[i].i_type == NAL_SEI) {
x4->sei_size = nals[i].i_payload;
x4->sei = av_malloc(x4->sei_size);
memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);
continue;
}
if (nals[i].i_payload > (size - (p - buf))) {
// return only complete nals which fit in buf
av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
break;
}
memcpy(p, nals[i].p_payload, nals[i].i_payload);
p += nals[i].i_payload;
}
return p - buf;
}
static int X264_frame(AVCodecContext *ctx, uint8_t *buf,
int orig_bufsize, void *data)
{
X264Context *x4 = ctx->priv_data;
AVFrame *frame = data;
x264_nal_t *nal;
int nnal, i;
x264_picture_t pic_out;
int bufsize;
x264_picture_init( &x4->pic );
x4->pic.img.i_csp = X264_CSP_I420;
x4->pic.img.i_plane = 3;
if (frame) {
for (i = 0; i < 3; i++) {
x4->pic.img.plane[i] = frame->data[i];
x4->pic.img.i_stride[i] = frame->linesize[i];
}
x4->pic.i_pts = frame->pts;
x4->pic.i_type =
frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
X264_TYPE_AUTO;
if (x4->params.b_tff != frame->top_field_first) {
x4->params.b_tff = frame->top_field_first;
x264_encoder_reconfig(x4->enc, &x4->params);
}
if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den
|| x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
x264_encoder_reconfig(x4->enc, &x4->params);
}
}
do {
bufsize = orig_bufsize;
if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
return -1;
bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
if (bufsize < 0)
return -1;
} while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc));
/* FIXME: libx264 now provides DTS, but AVFrame doesn't have a field for it. */
x4->out_pic.pts = pic_out.i_pts;
switch (pic_out.i_type) {
case X264_TYPE_IDR:
case X264_TYPE_I:
x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
break;
case X264_TYPE_P:
x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
break;
case X264_TYPE_B:
case X264_TYPE_BREF:
x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
break;
}
x4->out_pic.key_frame = pic_out.b_keyframe;
if (bufsize)
x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
return bufsize;
}
static av_cold int X264_close(AVCodecContext *avctx)
{
X264Context *x4 = avctx->priv_data;
av_freep(&avctx->extradata);
av_free(x4->sei);
if (x4->enc)
x264_encoder_close(x4->enc);
return 0;
}
#define OPT_STR(opt, param) \
do { \
int ret; \
if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
if(ret == X264_PARAM_BAD_NAME) \
av_log(avctx, AV_LOG_ERROR, \
"bad option '%s': '%s'\n", opt, param); \
else \
av_log(avctx, AV_LOG_ERROR, \
"bad value for '%s': '%s'\n", opt, param); \
return -1; \
} \
} while (0);
#define PARSE_X264_OPT(name, var)\
if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
return AVERROR(EINVAL);\
}
static av_cold int X264_init(AVCodecContext *avctx)
{
X264Context *x4 = avctx->priv_data;
x264_param_default(&x4->params);
x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
x4->params.rc.f_pb_factor = avctx->b_quant_factor;
x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
if (x4->preset || x4->tune)
if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
return AVERROR(EINVAL);
}
if (avctx->level > 0)
x4->params.i_level_idc = avctx->level;
x4->params.pf_log = X264_log;
x4->params.p_log_private = avctx;
x4->params.i_log_level = X264_LOG_DEBUG;
OPT_STR("weightp", x4->wpredp);
if (avctx->bit_rate) {
x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
x4->params.rc.i_rc_method = X264_RC_ABR;
}
x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
if (avctx->flags & CODEC_FLAG_PASS2) {
x4->params.rc.b_stat_read = 1;
} else {
#if FF_API_X264_GLOBAL_OPTS
if (avctx->crf) {
x4->params.rc.i_rc_method = X264_RC_CRF;
x4->params.rc.f_rf_constant = avctx->crf;
x4->params.rc.f_rf_constant_max = avctx->crf_max;
} else if (avctx->cqp > -1) {
x4->params.rc.i_rc_method = X264_RC_CQP;
x4->params.rc.i_qp_constant = avctx->cqp;
}
#endif
if (x4->crf >= 0) {
x4->params.rc.i_rc_method = X264_RC_CRF;
x4->params.rc.f_rf_constant = x4->crf;
} else if (x4->cqp >= 0) {
x4->params.rc.i_rc_method = X264_RC_CQP;
x4->params.rc.i_qp_constant = x4->cqp;
}
if (x4->crf_max >= 0)
x4->params.rc.f_rf_constant_max = x4->crf_max;
}
OPT_STR("stats", x4->stats);
if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
(avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
x4->params.rc.f_vbv_buffer_init =
(float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
}
OPT_STR("level", x4->level);
if(x4->x264opts){
const char *p= x4->x264opts;
while(p){
char param[256]={0}, val[256]={0};
sscanf(p, "%255[^:=]=%255[^:]", param, val);
OPT_STR(param, val);
p= strchr(p, ':');
p+=!!p;
}
}
#if FF_API_X264_GLOBAL_OPTS
if (avctx->aq_mode >= 0)
x4->params.rc.i_aq_mode = avctx->aq_mode;
if (avctx->aq_strength >= 0)
x4->params.rc.f_aq_strength = avctx->aq_strength;
if (avctx->psy_rd >= 0)
x4->params.analyse.f_psy_rd = avctx->psy_rd;
if (avctx->psy_trellis >= 0)
x4->params.analyse.f_psy_trellis = avctx->psy_trellis;
if (avctx->rc_lookahead >= 0)
x4->params.rc.i_lookahead = avctx->rc_lookahead;
if (avctx->weighted_p_pred >= 0)
x4->params.analyse.i_weighted_pred = avctx->weighted_p_pred;
if (avctx->bframebias)
x4->params.i_bframe_bias = avctx->bframebias;
if (avctx->deblockalpha)
x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
if (avctx->deblockbeta)
x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
if (avctx->complexityblur >= 0)
x4->params.rc.f_complexity_blur = avctx->complexityblur;
if (avctx->directpred >= 0)
x4->params.analyse.i_direct_mv_pred = avctx->directpred;
if (avctx->partitions) {
if (avctx->partitions & X264_PART_I4X4)
x4->params.analyse.inter |= X264_ANALYSE_I4x4;
if (avctx->partitions & X264_PART_I8X8)
x4->params.analyse.inter |= X264_ANALYSE_I8x8;
if (avctx->partitions & X264_PART_P8X8)
x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
if (avctx->partitions & X264_PART_P4X4)
x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
if (avctx->partitions & X264_PART_B8X8)
x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
}
if (avctx->flags2) {
x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;
x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;
x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED;
x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
x4->params.analyse.b_transform_8x8 = avctx->flags2 & CODEC_FLAG2_8X8DCT;
x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
x4->params.analyse.b_psy = avctx->flags2 & CODEC_FLAG2_PSY;
x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
}
#endif
if (avctx->me_method == ME_EPZS)
x4->params.analyse.i_me_method = X264_ME_DIA;
else if (avctx->me_method == ME_HEX)
x4->params.analyse.i_me_method = X264_ME_HEX;
else if (avctx->me_method == ME_UMH)
x4->params.analyse.i_me_method = X264_ME_UMH;
else if (avctx->me_method == ME_FULL)
x4->params.analyse.i_me_method = X264_ME_ESA;
else if (avctx->me_method == ME_TESA)
x4->params.analyse.i_me_method = X264_ME_TESA;
if (avctx->gop_size >= 0)
x4->params.i_keyint_max = avctx->gop_size;
if (avctx->max_b_frames >= 0)
x4->params.i_bframe = avctx->max_b_frames;
if (avctx->scenechange_threshold >= 0)
x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
if (avctx->qmin >= 0)
x4->params.rc.i_qp_min = avctx->qmin;
if (avctx->qmax >= 0)
x4->params.rc.i_qp_max = avctx->qmax;
if (avctx->max_qdiff >= 0)
x4->params.rc.i_qp_step = avctx->max_qdiff;
if (avctx->qblur >= 0)
x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
if (avctx->qcompress >= 0)
x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
if (avctx->refs >= 0)
x4->params.i_frame_reference = avctx->refs;
if (avctx->trellis >= 0)
x4->params.analyse.i_trellis = avctx->trellis;
if (avctx->me_range >= 0)
x4->params.analyse.i_me_range = avctx->me_range;
if (avctx->noise_reduction >= 0)
x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
if (avctx->me_subpel_quality >= 0)
x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
if (avctx->b_frame_strategy >= 0)
x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
if (avctx->keyint_min >= 0)
x4->params.i_keyint_min = avctx->keyint_min;
if (avctx->coder_type >= 0)
x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
if (avctx->me_cmp >= 0)
x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
if (x4->aq_mode >= 0)
x4->params.rc.i_aq_mode = x4->aq_mode;
if (x4->aq_strength >= 0)
x4->params.rc.f_aq_strength = x4->aq_strength;
PARSE_X264_OPT("psy-rd", psy_rd);
PARSE_X264_OPT("deblock", deblock);
PARSE_X264_OPT("partitions", partitions);
if (x4->psy >= 0)
x4->params.analyse.b_psy = x4->psy;
if (x4->rc_lookahead >= 0)
x4->params.rc.i_lookahead = x4->rc_lookahead;
if (x4->weightp >= 0)
x4->params.analyse.i_weighted_pred = x4->weightp;
if (x4->weightb >= 0)
x4->params.analyse.b_weighted_bipred = x4->weightb;
if (x4->cplxblur >= 0)
x4->params.rc.f_complexity_blur = x4->cplxblur;
if (x4->ssim >= 0)
x4->params.analyse.b_ssim = x4->ssim;
if (x4->intra_refresh >= 0)
x4->params.b_intra_refresh = x4->intra_refresh;
if (x4->b_bias != INT_MIN)
x4->params.i_bframe_bias = x4->b_bias;
if (x4->b_pyramid >= 0)
x4->params.i_bframe_pyramid = x4->b_pyramid;
if (x4->mixed_refs >= 0)
x4->params.analyse.b_mixed_references = x4->mixed_refs;
if (x4->dct8x8 >= 0)
x4->params.analyse.b_transform_8x8 = x4->dct8x8;
if (x4->fast_pskip >= 0)
x4->params.analyse.b_fast_pskip = x4->fast_pskip;
if (x4->aud >= 0)
x4->params.b_aud = x4->aud;
if (x4->mbtree >= 0)
x4->params.rc.b_mb_tree = x4->mbtree;
if (x4->direct_pred >= 0)
x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
if (x4->slice_max_size >= 0)
x4->params.i_slice_max_size = x4->slice_max_size;
if (x4->fastfirstpass)
x264_param_apply_fastfirstpass(&x4->params);
if (x4->profile)
if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
return AVERROR(EINVAL);
}
x4->params.i_width = avctx->width;
x4->params.i_height = avctx->height;
x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
x4->params.i_threads = avctx->thread_count;
x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
// x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
x4->params.i_slice_count = avctx->slices;
x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P;
if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
x4->params.b_repeat_headers = 0;
// update AVCodecContext with x264 parameters
avctx->has_b_frames = x4->params.i_bframe ?
x4->params.i_bframe_pyramid ? 2 : 1 : 0;
avctx->bit_rate = x4->params.rc.i_bitrate*1000;
#if FF_API_X264_GLOBAL_OPTS
avctx->crf = x4->params.rc.f_rf_constant;
#endif
x4->enc = x264_encoder_open(&x4->params);
if (!x4->enc)
return -1;
avctx->coded_frame = &x4->out_pic;
if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
x264_nal_t *nal;
int nnal, s, i;
s = x264_encoder_headers(x4->enc, &nal, &nnal);
for (i = 0; i < nnal; i++)
if (nal[i].i_type == NAL_SEI)
av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
avctx->extradata = av_malloc(s);
avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
}
return 0;
}
#define OFFSET(x) offsetof(X264Context, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), FF_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
{ "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
{ "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
{ "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), FF_OPT_TYPE_INT, { 1 }, 0, 1, VE},
{"level", "Specify level (as defined by Annex A)", OFFSET(level), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
{"passlogfile", "Filename for 2 pass stats", OFFSET(stats), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
{"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
{"x264opts", "x264 options", OFFSET(x264opts), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
{ "crf", "Select the quality for constant quality mode", OFFSET(crf), FF_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },
{ "crf_max", "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), FF_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },
{ "qp", "Constant quantization parameter rate control method",OFFSET(cqp), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
{ "aq-mode", "AQ method", OFFSET(aq_mode), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "aq_mode"},
{ "none", NULL, 0, FF_OPT_TYPE_CONST, {X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
{ "variance", "Variance AQ (complexity mask)", 0, FF_OPT_TYPE_CONST, {X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
{ "autovariance", "Auto-variance AQ (experimental)", 0, FF_OPT_TYPE_CONST, {X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
{ "aq-strength", "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), FF_OPT_TYPE_FLOAT, {-1}, -1, FLT_MAX, VE},
{ "psy", "Use psychovisual optimizations.", OFFSET(psy), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE },
{ "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), FF_OPT_TYPE_STRING, {0 }, 0, 0, VE},
{ "rc-lookahead", "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
{ "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE },
{ "weightp", "Weighted prediction analysis method.", OFFSET(weightp), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "weightp" },
{ "none", NULL, 0, FF_OPT_TYPE_CONST, {X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
{ "simple", NULL, 0, FF_OPT_TYPE_CONST, {X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
{ "smart", NULL, 0, FF_OPT_TYPE_CONST, {X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
{ "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE },
{ "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),FF_OPT_TYPE_INT, {-1 }, -1, 1, VE },
{ "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), FF_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE },
{ "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "b_pyramid" },
{ "none", NULL, 0, FF_OPT_TYPE_CONST, {X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
{ "strict", "Strictly hierarchical pyramid", 0, FF_OPT_TYPE_CONST, {X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
{ "normal", "Non-strict (not Blu-ray compatible)", 0, FF_OPT_TYPE_CONST, {X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
{ "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), FF_OPT_TYPE_INT, {-1}, -1, 1, VE },
{ "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE},
{ "fast-pskip", NULL, OFFSET(fast_pskip), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE},
{ "aud", "Use access unit delimiters.", OFFSET(aud), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE},
{ "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), FF_OPT_TYPE_INT, {-1 }, -1, 1, VE},
{ "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
{ "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), FF_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE},
{ "partitions", "A comma-separated list of partitions to consider. "
"Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
{ "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "direct-pred" },
{ "none", NULL, 0, FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
{ "spatial", NULL, 0, FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
{ "temporal", NULL, 0, FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
{ "auto", NULL, 0, FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
{ "slice-max-size","Constant quantization parameter rate control method",OFFSET(slice_max_size), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
{ NULL },
};
static const AVClass class = {
.class_name = "libx264",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVCodecDefault x264_defaults[] = {
{ "b", "0" },
{ "bf", "-1" },
{ "flags2", "0" },
{ "g", "-1" },
{ "qmin", "-1" },
{ "qmax", "-1" },
{ "qdiff", "-1" },
{ "qblur", "-1" },
{ "qcomp", "-1" },
{ "rc_lookahead", "-1" },
{ "refs", "-1" },
{ "sc_threshold", "-1" },
{ "trellis", "-1" },
{ "nr", "-1" },
{ "me_range", "-1" },
{ "me_method", "-1" },
{ "subq", "-1" },
{ "b_strategy", "-1" },
{ "keyint_min", "-1" },
{ "coder", "-1" },
{ "cmp", "-1" },
{ "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
{ NULL },
};
AVCodec ff_libx264_encoder = {
.name = "libx264",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_H264,
.priv_data_size = sizeof(X264Context),
.init = X264_init,
.encode = X264_frame,
.close = X264_close,
.capabilities = CODEC_CAP_DELAY,
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
.priv_class = &class,
.defaults = x264_defaults,
};