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-rw-r--r--libavcodec/libx264.c195
1 files changed, 150 insertions, 45 deletions
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index e5fac00469..519dc511ec 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)
@@ -138,7 +148,8 @@ 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;
}
@@ -153,9 +164,50 @@ static av_cold int X264_close(AVCodecContext *avctx)
if (x4->enc)
x264_encoder_close(x4->enc);
+ av_free(x4->preset);
+ av_free(x4->tune);
+ av_free(x4->profile);
+ av_free(x4->level);
+ av_free(x4->stats);
+ av_free(x4->weightp);
+
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*100)
+ 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;
@@ -163,32 +215,7 @@ 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;
@@ -217,13 +244,6 @@ 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 +261,6 @@ 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 +293,49 @@ 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 +343,35 @@ 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;
@@ -307,6 +388,12 @@ 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 +417,23 @@ 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, 0, 0, 0, VE},
+ {"tune", "Tune the encoding params", OFFSET(tune), 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},
+ {"profile", "Set profile restrictions", OFFSET(profile), FF_OPT_TYPE_STRING, 0, 0, 0, VE},
+ {"level", "Specify level (as defined by Annex A)", OFFSET(level), FF_OPT_TYPE_STRING, 0, 0, 0, VE},
+ {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), FF_OPT_TYPE_STRING, 0, 0, 0, VE},
+ {"wpredp", "Weighted prediction for P-frames", OFFSET(weightp), FF_OPT_TYPE_STRING, 0, 0, 0, VE},
+ {"x264opts", "x264 options", OFFSET(x264opts), FF_OPT_TYPE_STRING, 0, 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 +445,5 @@ 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,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 12:53:10 +0000