diff options
Diffstat (limited to 'libavcodec/libx264.c')
| -rw-r--r-- | libavcodec/libx264.c | 197 |
1 files changed, 150 insertions, 47 deletions
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c index e5fac00469..cc5b9837f8 100644 --- a/libavcodec/libx264.c +++ b/libavcodec/libx264.c @@ -2,23 +2,24 @@ * H.264 encoding using the x264 library * Copyright (C) 2005 Mans Rullgard <mans@mansr.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * 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 <x264.h> #include <math.h> @@ -27,12 +28,21 @@ #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 *weightp; + char *x264opts; } X264Context; static void X264_log(void *p, int level, const char *fmt, va_list args) @@ -109,6 +119,12 @@ static int X264_frame(AVCodecContext *ctx, uint8_t *buf, 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 { @@ -138,7 +154,8 @@ static int X264_frame(AVCodecContext *ctx, uint8_t *buf, } x4->out_pic.key_frame = pic_out.b_keyframe; - x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; + if (bufsize) + x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; return bufsize; } @@ -156,6 +173,40 @@ static av_cold int X264_close(AVCodecContext *avctx) return 0; } +/** + * Detect default settings and use default profile to avoid libx264 failure. + */ +static void check_default_settings(AVCodecContext *avctx) +{ + X264Context *x4 = avctx->priv_data; + + int score = 0; + score += x4->params.analyse.i_me_range == 0; + score += x4->params.rc.i_qp_step == 3; + score += x4->params.i_keyint_max == 12; + score += x4->params.rc.i_qp_min == 2; + score += x4->params.rc.i_qp_max == 31; + score += x4->params.rc.f_qcompress == 0.5; + score += fabs(x4->params.rc.f_ip_factor - 1.25) < 0.01; + score += fabs(x4->params.rc.f_pb_factor - 1.25) < 0.01; + score += x4->params.analyse.inter == 0 && x4->params.analyse.i_subpel_refine == 8; + if (score >= 5) { + av_log(avctx, AV_LOG_ERROR, "Default settings detected, using medium profile\n"); + x4->preset = av_strdup("medium"); + if (avctx->bit_rate == 200*1000) + avctx->crf = 23; + } +} + +#define OPT_STR(opt, param) \ + do { \ + if (param && x264_param_parse(&x4->params, opt, param) < 0) { \ + av_log(avctx, AV_LOG_ERROR, \ + "bad value for '%s': '%s'\n", opt, param); \ + return -1; \ + } \ + } while (0); \ + static av_cold int X264_init(AVCodecContext *avctx) { X264Context *x4 = avctx->priv_data; @@ -163,39 +214,13 @@ static av_cold int X264_init(AVCodecContext *avctx) x4->sei_size = 0; 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.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH; - 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; - 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; - } - } - - // 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.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) @@ -217,13 +242,6 @@ static av_cold int X264_init(AVCodecContext *avctx) 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 = 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.inter = 0; if (avctx->partitions) { if (avctx->partitions & X264_PART_I4X4) @@ -241,7 +259,6 @@ static av_cold int X264_init(AVCodecContext *avctx) x4->params.analyse.i_direct_mv_pred = avctx->directpred; x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED; - x4->params.analyse.i_weighted_pred = avctx->weighted_p_pred; if (avctx->me_method == ME_EPZS) x4->params.analyse.i_me_method = X264_ME_DIA; @@ -274,8 +291,49 @@ static av_cold int X264_init(AVCodecContext *avctx) 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.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 (!x4->preset) + check_default_settings(avctx); + + if (x4->preset || x4->tune) { + if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) + return -1; + } + + x4->params.pf_log = X264_log; + x4->params.p_log_private = avctx; + x4->params.i_log_level = X264_LOG_DEBUG; + + OPT_STR("weightp", x4->weightp); + + x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH; + 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; + 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; + } + } + + OPT_STR("stats", x4->stats); + + // 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; if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy && (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { @@ -283,14 +341,35 @@ static av_cold int X264_init(AVCodecContext *avctx) (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; + 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 (x4->fastfirstpass) + x264_param_apply_fastfirstpass(&x4->params); + + if (x4->profile) + if (x264_param_apply_profile(&x4->params, x4->profile) < 0) + return -1; + + 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.i_log_level = X264_LOG_DEBUG; x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD; @@ -298,7 +377,7 @@ static av_cold int X264_init(AVCodecContext *avctx) x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; - x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP); +// x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP); x4->params.i_slice_count = avctx->slices; @@ -307,6 +386,12 @@ static av_cold int X264_init(AVCodecContext *avctx) 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; + avctx->crf = x4->params.rc.f_rf_constant; + x4->enc = x264_encoder_open(&x4->params); if (!x4->enc) return -1; @@ -330,6 +415,23 @@ static av_cold int X264_init(AVCodecContext *avctx) 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", OFFSET(preset), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE}, + {"tune", "Tune the encoding params", OFFSET(tune), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE}, + {"fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), FF_OPT_TYPE_INT, {.dbl=1}, 0, 1, VE}, + {"profile", "Set profile restrictions", OFFSET(profile), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, 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(weightp), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE}, + {"x264opts", "x264 options", OFFSET(x264opts), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE}, + { NULL }, +}; + +static const AVClass class = { "libx264", av_default_item_name, options, LIBAVUTIL_VERSION_INT }; + AVCodec ff_libx264_encoder = { .name = "libx264", .type = AVMEDIA_TYPE_VIDEO, @@ -341,4 +443,5 @@ AVCodec ff_libx264_encoder = { .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, }; |