mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
459 lines
17 KiB
459 lines
17 KiB
/* |
|
* H.264 encoding using the x264 library |
|
* Copyright (C) 2005 Mans Rullgard <mans@mansr.com> |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; 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; |
|
int fastfirstpass; |
|
float crf; |
|
float crf_max; |
|
int cqp; |
|
int aq_mode; |
|
float aq_strength; |
|
float psy_rd; |
|
float psy_trellis; |
|
int rc_lookahead; |
|
int weightp; |
|
} 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) { |
|
memcpy(p, x4->sei, x4->sei_size); |
|
p += x4->sei_size; |
|
x4->sei_size = 0; |
|
} |
|
|
|
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; |
|
} |
|
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 bufsize, void *data) |
|
{ |
|
X264Context *x4 = ctx->priv_data; |
|
AVFrame *frame = data; |
|
x264_nal_t *nal; |
|
int nnal, i; |
|
x264_picture_t pic_out; |
|
|
|
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); |
|
} |
|
} |
|
|
|
do { |
|
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; |
|
} |
|
|
|
static av_cold int X264_init(AVCodecContext *avctx) |
|
{ |
|
X264Context *x4 = avctx->priv_data; |
|
|
|
x4->sei_size = 0; |
|
x264_param_default(&x4->params); |
|
|
|
x4->params.i_keyint_max = avctx->gop_size; |
|
|
|
x4->params.i_bframe = avctx->max_b_frames; |
|
x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC; |
|
x4->params.i_bframe_adaptive = avctx->b_frame_strategy; |
|
x4->params.i_bframe_bias = avctx->bframebias; |
|
x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE; |
|
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.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 if (avctx->me_method == ME_TESA) |
|
x4->params.analyse.i_me_method = X264_ME_TESA; |
|
else x4->params.analyse.i_me_method = X264_ME_HEX; |
|
|
|
x4->params.analyse.b_psy = avctx->flags2 & CODEC_FLAG2_PSY; |
|
|
|
x4->params.analyse.i_me_range = avctx->me_range; |
|
x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; |
|
|
|
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; |
|
|
|
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); |
|
} |
|
|
|
x4->params.pf_log = X264_log; |
|
x4->params.p_log_private = avctx; |
|
x4->params.i_log_level = X264_LOG_DEBUG; |
|
|
|
x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH; |
|
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; |
|
} |
|
|
|
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; |
|
} |
|
|
|
x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE); |
|
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 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; |
|
#endif |
|
|
|
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; |
|
if (x4->psy_rd >= 0) |
|
x4->params.analyse.f_psy_rd = x4->psy_rd; |
|
if (x4->psy_trellis >= 0) |
|
x4->params.analyse.f_psy_trellis = x4->psy_trellis; |
|
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->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.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM; |
|
|
|
x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD; |
|
|
|
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}, |
|
{ "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 }, |
|
{ "cqp", "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}, |
|
{ "pdy_rd", "Psy RD strength.", OFFSET(psy_rd), FF_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE}, |
|
{ "psy_trellis", "Psy trellis strength", OFFSET(psy_trellis), FF_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, 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 }, |
|
{ "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" }, |
|
{ 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" }, |
|
{ 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, |
|
};
|
|
|