[libav.git] / libavcodec / x264.c

/*
 * H.264 encoding using the x264 library
 * Copyright (C) 2005  Mans Rullgard <mru@inprovide.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 "avcodec.h"
#include <x264.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct X264Context {
    x264_param_t params;
    x264_t *enc;
    x264_picture_t pic;
    AVFrame out_pic;
} 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_ERROR,
        [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(uint8_t *buf, int size, x264_nal_t *nals, int nnal)
{
    uint8_t *p = buf;
    int i;

    for(i = 0; i < nnal; i++){
        int s = x264_nal_encode(p, &size, 1, nals + i);
        if(s < 0)
            return -1;
        p += s;
    }

    return p - buf;
}

static int
X264_frame(AVCodecContext *ctx, uint8_t *buf, int bufsize, void *data)
{
    X264Context *x4 = ctx->priv_data;
    AVFrame *frame = data;
    x264_nal_t *nal;
    int nnal, i;
    x264_picture_t pic_out;

    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 = X264_TYPE_AUTO;
    }

    if(x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL,
                           &pic_out))
        return -1;

    bufsize = encode_nals(buf, bufsize, nal, nnal);
    if(bufsize < 0)
        return -1;

    /* FIXME: dts */
    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 = FF_I_TYPE;
        break;
    case X264_TYPE_P:
        x4->out_pic.pict_type = FF_P_TYPE;
        break;
    case X264_TYPE_B:
    case X264_TYPE_BREF:
        x4->out_pic.pict_type = FF_B_TYPE;
        break;
    }

    x4->out_pic.key_frame = pic_out.i_type == X264_TYPE_IDR;
    x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;

    return bufsize;
}

static int
X264_close(AVCodecContext *avctx)
{
    X264Context *x4 = avctx->priv_data;

    if(x4->enc)
        x264_encoder_close(x4->enc);

    return 0;
}

static int
X264_init(AVCodecContext *avctx)
{
    X264Context *x4 = avctx->priv_data;

    x264_param_default(&x4->params);

    x4->params.pf_log = X264_log;
    x4->params.p_log_private = avctx;

    x4->params.i_keyint_max = avctx->gop_size;
    x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
    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(avctx->crf){
            x4->params.rc.i_rc_method = X264_RC_CRF;
            x4->params.rc.f_rf_constant = avctx->crf;
        }else if(avctx->cqp > -1){
            x4->params.rc.i_rc_method = X264_RC_CQP;
            x4->params.rc.i_qp_constant = avctx->cqp;
        }
    }

    // if neither crf nor cqp modes are selected we have to enable the RC
    // we do it this way because we cannot check if the bitrate has been set
    if(!(avctx->crf || (avctx->cqp > -1))) x4->params.rc.i_rc_method = X264_RC_ABR;

    x4->params.i_bframe = avctx->max_b_frames;
    x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
    x4->params.b_bframe_adaptive = avctx->b_frame_strategy;
    x4->params.i_bframe_bias = avctx->bframebias;
    x4->params.b_bframe_pyramid = (avctx->flags2 & CODEC_FLAG2_BPYRAMID);
    avctx->has_b_frames= (avctx->flags2 & CODEC_FLAG2_BPYRAMID) ? 2 : !!avctx->max_b_frames;

    x4->params.i_keyint_min = avctx->keyint_min;
    if(x4->params.i_keyint_min > x4->params.i_keyint_max)
        x4->params.i_keyint_min = x4->params.i_keyint_max;

    x4->params.i_scenecut_threshold = avctx->scenechange_threshold;

    x4->params.b_deblocking_filter = (avctx->flags & CODEC_FLAG_LOOP_FILTER);
    x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
    x4->params.i_deblocking_filter_beta = avctx->deblockbeta;

    x4->params.rc.i_qp_min = avctx->qmin;
    x4->params.rc.i_qp_max = avctx->qmax;
    x4->params.rc.i_qp_step = avctx->max_qdiff;

    x4->params.rc.f_qcompress = avctx->qcompress;  /* 0.0 => cbr, 1.0 => constant qp */
    x4->params.rc.f_qblur = avctx->qblur;        /* temporally blur quants */
    x4->params.rc.f_complexity_blur = avctx->complexityblur;

    x4->params.i_frame_reference = avctx->refs;

    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 = avctx->time_base.den;
    x4->params.i_fps_den = avctx->time_base.num;

    x4->params.analyse.inter = 0;
    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;
    }

    x4->params.analyse.i_direct_mv_pred = avctx->directpred;

    x4->params.analyse.b_weighted_bipred = (avctx->flags2 & CODEC_FLAG2_WPRED);

    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 x4->params.analyse.i_me_method = X264_ME_HEX;

    x4->params.analyse.i_me_range = avctx->me_range;
    x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;

    x4->params.analyse.b_bidir_me = (avctx->bidir_refine > 0);
    x4->params.analyse.b_bframe_rdo = (avctx->flags2 & CODEC_FLAG2_BRDO);
    x4->params.analyse.b_mixed_references =
        (avctx->flags2 & CODEC_FLAG2_MIXED_REFS);
    x4->params.analyse.b_chroma_me = (avctx->me_cmp & FF_CMP_CHROMA);
    x4->params.analyse.b_transform_8x8 = (avctx->flags2 & CODEC_FLAG2_8X8DCT);
    x4->params.analyse.b_fast_pskip = (avctx->flags2 & CODEC_FLAG2_FASTPSKIP);

    x4->params.analyse.i_trellis = avctx->trellis;
    x4->params.analyse.i_noise_reduction = avctx->noise_reduction;

    if(avctx->level > 0) x4->params.i_level_idc = avctx->level;

    x4->params.rc.f_rate_tolerance =
        (float)avctx->bit_rate_tolerance/avctx->bit_rate;

    if((avctx->rc_buffer_size != 0) &&
            (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;
    }
    else x4->params.rc.f_vbv_buffer_init = 0.9;

    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;
    x4->params.rc.psz_rc_eq = avctx->rc_eq;

    x4->params.analyse.b_psnr = (avctx->flags & CODEC_FLAG_PSNR);
    x4->params.i_log_level = X264_LOG_DEBUG;

    x4->params.b_aud = (avctx->flags2 & CODEC_FLAG2_AUD);

    x4->params.i_threads = avctx->thread_count;

    if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
        x4->params.b_repeat_headers = 0;
    }

    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, i, s = 0;

        x264_encoder_headers(x4->enc, &nal, &nnal);

        /* 5 bytes NAL header + worst case escaping */
        for(i = 0; i < nnal; i++)
            s += 5 + nal[i].i_payload * 4 / 3;

        avctx->extradata = av_malloc(s);
        avctx->extradata_size = encode_nals(avctx->extradata, s, nal, nnal);
    }

    return 0;
}

AVCodec x264_encoder = {
    .name = "h264",
    .type = CODEC_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 = (enum PixelFormat[]) { PIX_FMT_YUV420P, -1 }
};
Commit	Line	Data
6662ec29 MN	1	/*
6662ec29 MN	2	* H.264 encoding using the x264 library
f9791751	3	* Copyright (C) 2005 Mans Rullgard <mru@inprovide.com>
6662ec29	4	*
b78e7197 DB	5	* This file is part of FFmpeg.
	6	*
	7	* FFmpeg is free software; you can redistribute it and/or
6662ec29 MN	8	* modify it under the terms of the GNU Lesser General Public
6662ec29 MN	9	* License as published by the Free Software Foundation; either
b78e7197	10	* version 2.1 of the License, or (at your option) any later version.
6662ec29	11	*
b78e7197	12	* FFmpeg is distributed in the hope that it will be useful,
6662ec29 MN	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* Lesser General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public
b78e7197	18	* License along with FFmpeg; if not, write to the Free Software
5509bffa	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6662ec29 MN	20	*/
	21
	22	#include "avcodec.h"
	23	#include <x264.h>
337afd14	24	#include <math.h>
58f7833e RS	25	#include <stdio.h>
	26	#include <stdlib.h>
	27	#include <string.h>
6662ec29 MN	28
	29	typedef struct X264Context {
	30	x264_param_t params;
	31	x264_t *enc;
	32	x264_picture_t pic;
	33	AVFrame out_pic;
	34	} X264Context;
	35
	36	static void
	37	X264_log(void p, int level, const char fmt, va_list args)
	38	{
	39	static const int level_map[] = {
bb270c08 DB	40	[X264_LOG_ERROR] = AV_LOG_ERROR,
	41	[X264_LOG_WARNING] = AV_LOG_ERROR,
	42	[X264_LOG_INFO] = AV_LOG_INFO,
	43	[X264_LOG_DEBUG] = AV_LOG_DEBUG
6662ec29 MN	44	};
	45
	46	if(level < 0 \|\| level > X264_LOG_DEBUG)
bb270c08	47	return;
6662ec29 MN	48
	49	av_vlog(p, level_map[level], fmt, args);
	50	}
	51
	52
	53	static int
f40487c2	54	encode_nals(uint8_t buf, int size, x264_nal_t nals, int nnal)
6662ec29	55	{
f40487c2	56	uint8_t *p = buf;
6662ec29 MN	57	int i;
	58
	59	for(i = 0; i < nnal; i++){
bb270c08 DB	60	int s = x264_nal_encode(p, &size, 1, nals + i);
	61	if(s < 0)
	62	return -1;
	63	p += s;
6662ec29 MN	64	}
	65
	66	return p - buf;
	67	}
	68
c328f313	69	static int
6662ec29 MN	70	X264_frame(AVCodecContext ctx, uint8_t buf, int bufsize, void *data)
	71	{
	72	X264Context *x4 = ctx->priv_data;
	73	AVFrame *frame = data;
	74	x264_nal_t *nal;
	75	int nnal, i;
	76	x264_picture_t pic_out;
	77
	78	x4->pic.img.i_csp = X264_CSP_I420;
	79	x4->pic.img.i_plane = 3;
	80
84278104	81	if (frame) {
67bcc870 MR	82	for(i = 0; i < 3; i++){
	83	x4->pic.img.plane[i] = frame->data[i];
	84	x4->pic.img.i_stride[i] = frame->linesize[i];
	85	}
6662ec29	86
67bcc870 MR	87	x4->pic.i_pts = frame->pts;
67bcc870 MR	88	x4->pic.i_type = X264_TYPE_AUTO;
84278104	89	}
6662ec29	90
84278104 MR	91	if(x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL,
84278104 MR	92	&pic_out))
bb270c08	93	return -1;
6662ec29 MN	94
	95	bufsize = encode_nals(buf, bufsize, nal, nnal);
	96	if(bufsize < 0)
bb270c08	97	return -1;
6662ec29 MN	98
	99	/* FIXME: dts */
	100	x4->out_pic.pts = pic_out.i_pts;
	101
	102	switch(pic_out.i_type){
	103	case X264_TYPE_IDR:
	104	case X264_TYPE_I:
	105	x4->out_pic.pict_type = FF_I_TYPE;
	106	break;
	107	case X264_TYPE_P:
	108	x4->out_pic.pict_type = FF_P_TYPE;
	109	break;
	110	case X264_TYPE_B:
	111	case X264_TYPE_BREF:
	112	x4->out_pic.pict_type = FF_B_TYPE;
	113	break;
	114	}
	115
68c6d60f MR	116	x4->out_pic.key_frame = pic_out.i_type == X264_TYPE_IDR;
68c6d60f MR	117	x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
6662ec29 MN	118
	119	return bufsize;
	120	}
	121
	122	static int
	123	X264_close(AVCodecContext *avctx)
	124	{
	125	X264Context *x4 = avctx->priv_data;
	126
	127	if(x4->enc)
bb270c08	128	x264_encoder_close(x4->enc);
6662ec29 MN	129
	130	return 0;
	131	}
	132
c328f313	133	static int
6662ec29 MN	134	X264_init(AVCodecContext *avctx)
	135	{
	136	X264Context *x4 = avctx->priv_data;
	137
	138	x264_param_default(&x4->params);
	139
	140	x4->params.pf_log = X264_log;
	141	x4->params.p_log_private = avctx;
	142
	143	x4->params.i_keyint_max = avctx->gop_size;
	144	x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
3f9d3777	145	x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
18ae520b	146	x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
58f7833e RS	147	x4->params.rc.b_stat_write = (avctx->flags & CODEC_FLAG_PASS1);
	148	if(avctx->flags & CODEC_FLAG_PASS2) x4->params.rc.b_stat_read = 1;
	149	else{
8b75e45d LM	150	if(avctx->crf){
8b75e45d LM	151	x4->params.rc.i_rc_method = X264_RC_CRF;
9f1c1c99	152	x4->params.rc.f_rf_constant = avctx->crf;
8b75e45d LM	153	}else if(avctx->cqp > -1){
	154	x4->params.rc.i_rc_method = X264_RC_CQP;
	155	x4->params.rc.i_qp_constant = avctx->cqp;
	156	}
58f7833e RS	157	}
	158
	159	// if neither crf nor cqp modes are selected we have to enable the RC
	160	// we do it this way because we cannot check if the bitrate has been set
8b75e45d	161	if(!(avctx->crf \|\| (avctx->cqp > -1))) x4->params.rc.i_rc_method = X264_RC_ABR;
58f7833e	162
d4e87f79 MR	163	x4->params.i_bframe = avctx->max_b_frames;
d4e87f79 MR	164	x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
58f7833e RS	165	x4->params.b_bframe_adaptive = avctx->b_frame_strategy;
	166	x4->params.i_bframe_bias = avctx->bframebias;
	167	x4->params.b_bframe_pyramid = (avctx->flags2 & CODEC_FLAG2_BPYRAMID);
504ee036	168	avctx->has_b_frames= (avctx->flags2 & CODEC_FLAG2_BPYRAMID) ? 2 : !!avctx->max_b_frames;
58f7833e RS	169
	170	x4->params.i_keyint_min = avctx->keyint_min;
	171	if(x4->params.i_keyint_min > x4->params.i_keyint_max)
	172	x4->params.i_keyint_min = x4->params.i_keyint_max;
	173
	174	x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
	175
	176	x4->params.b_deblocking_filter = (avctx->flags & CODEC_FLAG_LOOP_FILTER);
	177	x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
	178	x4->params.i_deblocking_filter_beta = avctx->deblockbeta;
f9791751	179
6662ec29 MN	180	x4->params.rc.i_qp_min = avctx->qmin;
	181	x4->params.rc.i_qp_max = avctx->qmax;
	182	x4->params.rc.i_qp_step = avctx->max_qdiff;
	183
18ae520b DA	184	x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
18ae520b DA	185	x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
58f7833e	186	x4->params.rc.f_complexity_blur = avctx->complexityblur;
18ae520b	187
58f7833e	188	x4->params.i_frame_reference = avctx->refs;
68c6d60f	189
6662ec29 MN	190	x4->params.i_width = avctx->width;
	191	x4->params.i_height = avctx->height;
	192	x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
	193	x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
c0df9d75 MN	194	x4->params.i_fps_num = avctx->time_base.den;
c0df9d75 MN	195	x4->params.i_fps_den = avctx->time_base.num;
6662ec29	196
58f7833e RS	197	x4->params.analyse.inter = 0;
	198	if(avctx->partitions){
	199	if(avctx->partitions & X264_PART_I4X4)
	200	x4->params.analyse.inter \|= X264_ANALYSE_I4x4;
	201	if(avctx->partitions & X264_PART_I8X8)
	202	x4->params.analyse.inter \|= X264_ANALYSE_I8x8;
	203	if(avctx->partitions & X264_PART_P8X8)
	204	x4->params.analyse.inter \|= X264_ANALYSE_PSUB16x16;
	205	if(avctx->partitions & X264_PART_P4X4)
	206	x4->params.analyse.inter \|= X264_ANALYSE_PSUB8x8;
	207	if(avctx->partitions & X264_PART_B8X8)
	208	x4->params.analyse.inter \|= X264_ANALYSE_BSUB16x16;
	209	}
	210
	211	x4->params.analyse.i_direct_mv_pred = avctx->directpred;
	212
	213	x4->params.analyse.b_weighted_bipred = (avctx->flags2 & CODEC_FLAG2_WPRED);
	214
	215	if(avctx->me_method == ME_EPZS)
	216	x4->params.analyse.i_me_method = X264_ME_DIA;
	217	else if(avctx->me_method == ME_HEX)
	218	x4->params.analyse.i_me_method = X264_ME_HEX;
	219	else if(avctx->me_method == ME_UMH)
	220	x4->params.analyse.i_me_method = X264_ME_UMH;
	221	else if(avctx->me_method == ME_FULL)
	222	x4->params.analyse.i_me_method = X264_ME_ESA;
	223	else x4->params.analyse.i_me_method = X264_ME_HEX;
	224
	225	x4->params.analyse.i_me_range = avctx->me_range;
	226	x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
	227
a5474d50	228	x4->params.analyse.b_bidir_me = (avctx->bidir_refine > 0);
58f7833e RS	229	x4->params.analyse.b_bframe_rdo = (avctx->flags2 & CODEC_FLAG2_BRDO);
	230	x4->params.analyse.b_mixed_references =
	231	(avctx->flags2 & CODEC_FLAG2_MIXED_REFS);
	232	x4->params.analyse.b_chroma_me = (avctx->me_cmp & FF_CMP_CHROMA);
	233	x4->params.analyse.b_transform_8x8 = (avctx->flags2 & CODEC_FLAG2_8X8DCT);
	234	x4->params.analyse.b_fast_pskip = (avctx->flags2 & CODEC_FLAG2_FASTPSKIP);
	235
	236	x4->params.analyse.i_trellis = avctx->trellis;
277fe229	237	x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
58f7833e RS	238
	239	if(avctx->level > 0) x4->params.i_level_idc = avctx->level;
	240
4f59b684	241	x4->params.rc.f_rate_tolerance =
58f7833e RS	242	(float)avctx->bit_rate_tolerance/avctx->bit_rate;
	243
	244	if((avctx->rc_buffer_size != 0) &&
	245	(avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)){
	246	x4->params.rc.f_vbv_buffer_init =
	247	(float)avctx->rc_initial_buffer_occupancy/avctx->rc_buffer_size;
	248	}
	249	else x4->params.rc.f_vbv_buffer_init = 0.9;
	250
	251	x4->params.rc.f_ip_factor = 1/fabs(avctx->i_quant_factor);
	252	x4->params.rc.f_pb_factor = avctx->b_quant_factor;
	253	x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
	254	x4->params.rc.psz_rc_eq = avctx->rc_eq;
	255
	256	x4->params.analyse.b_psnr = (avctx->flags & CODEC_FLAG_PSNR);
	257	x4->params.i_log_level = X264_LOG_DEBUG;
	258
	259	x4->params.b_aud = (avctx->flags2 & CODEC_FLAG2_AUD);
	260
568d4b81 MR	261	x4->params.i_threads = avctx->thread_count;
568d4b81 MR	262
806011f2 MR	263	if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
	264	x4->params.b_repeat_headers = 0;
	265	}
	266
6662ec29 MN	267	x4->enc = x264_encoder_open(&x4->params);
	268	if(!x4->enc)
	269	return -1;
	270
	271	avctx->coded_frame = &x4->out_pic;
	272
806011f2	273	if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){
4f59b684 DB	274	x264_nal_t *nal;
4f59b684 DB	275	int nnal, i, s = 0;
806011f2	276
4f59b684	277	x264_encoder_headers(x4->enc, &nal, &nnal);
806011f2	278
4f59b684 DB	279	/* 5 bytes NAL header + worst case escaping */
	280	for(i = 0; i < nnal; i++)
	281	s += 5 + nal[i].i_payload * 4 / 3;
806011f2 MR	282
	283	avctx->extradata = av_malloc(s);
	284	avctx->extradata_size = encode_nals(avctx->extradata, s, nal, nnal);
	285	}
	286
6662ec29 MN	287	return 0;
	288	}
	289
	290	AVCodec x264_encoder = {
	291	.name = "h264",
	292	.type = CODEC_TYPE_VIDEO,
	293	.id = CODEC_ID_H264,
	294	.priv_data_size = sizeof(X264Context),
	295	.init = X264_init,
	296	.encode = X264_frame,
	297	.close = X264_close,
84278104	298	.capabilities = CODEC_CAP_DELAY,
6662ec29 MN	299	.pix_fmts = (enum PixelFormat[]) { PIX_FMT_YUV420P, -1 }
6662ec29 MN	300	};