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https://github.com/FFmpeg/FFmpeg.git
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libx264: add preset, tune, profile and fastfirstpass private options
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Baptiste Coudurier
Anton Khirnov
parent
b2700a5c7c
commit
07a227b432
@ -19,6 +19,7 @@
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include <x264.h>
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#include <math.h>
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@ -27,12 +28,17 @@
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#include <string.h>
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typedef struct X264Context {
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AVClass *class;
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x264_param_t params;
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x264_t *enc;
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x264_picture_t pic;
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uint8_t *sei;
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int sei_size;
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AVFrame out_pic;
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char *preset;
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char *tune;
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char *profile;
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int fastfirstpass;
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} X264Context;
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static void X264_log(void *p, int level, const char *fmt, va_list args)
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@ -163,32 +169,7 @@ static av_cold int X264_init(AVCodecContext *avctx)
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x4->sei_size = 0;
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x264_param_default(&x4->params);
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x4->params.pf_log = X264_log;
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x4->params.p_log_private = avctx;
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x4->params.i_keyint_max = avctx->gop_size;
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x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
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x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
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x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
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x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
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x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
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if (avctx->flags & CODEC_FLAG_PASS2) {
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x4->params.rc.b_stat_read = 1;
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} else {
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if (avctx->crf) {
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x4->params.rc.i_rc_method = X264_RC_CRF;
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x4->params.rc.f_rf_constant = avctx->crf;
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x4->params.rc.f_rf_constant_max = avctx->crf_max;
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} else if (avctx->cqp > -1) {
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x4->params.rc.i_rc_method = X264_RC_CQP;
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x4->params.rc.i_qp_constant = avctx->cqp;
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}
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}
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// if neither crf nor cqp modes are selected we have to enable the RC
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// we do it this way because we cannot check if the bitrate has been set
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if (!(avctx->crf || (avctx->cqp > -1)))
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x4->params.rc.i_rc_method = X264_RC_ABR;
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x4->params.i_bframe = avctx->max_b_frames;
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x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
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@ -217,13 +198,6 @@ static av_cold int X264_init(AVCodecContext *avctx)
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x4->params.i_frame_reference = avctx->refs;
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x4->params.i_width = avctx->width;
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x4->params.i_height = avctx->height;
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x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
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x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
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x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
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x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
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x4->params.analyse.inter = 0;
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if (avctx->partitions) {
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if (avctx->partitions & X264_PART_I4X4)
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@ -277,6 +251,39 @@ static av_cold int X264_init(AVCodecContext *avctx)
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if (avctx->level > 0)
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x4->params.i_level_idc = avctx->level;
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if (x4->preset || x4->tune)
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if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
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return AVERROR(EINVAL);
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}
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x4->params.pf_log = X264_log;
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x4->params.p_log_private = avctx;
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x4->params.i_log_level = X264_LOG_DEBUG;
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x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
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x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
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x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
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x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
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x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
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if (avctx->flags & CODEC_FLAG_PASS2) {
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x4->params.rc.b_stat_read = 1;
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} else {
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if (avctx->crf) {
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x4->params.rc.i_rc_method = X264_RC_CRF;
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x4->params.rc.f_rf_constant = avctx->crf;
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x4->params.rc.f_rf_constant_max = avctx->crf_max;
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} else if (avctx->cqp > -1) {
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x4->params.rc.i_rc_method = X264_RC_CQP;
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x4->params.rc.i_qp_constant = avctx->cqp;
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}
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}
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// if neither crf nor cqp modes are selected we have to enable the RC
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// we do it this way because we cannot check if the bitrate has been set
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if (!(avctx->crf || (avctx->cqp > -1)))
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x4->params.rc.i_rc_method = X264_RC_ABR;
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if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
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(avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
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x4->params.rc.f_vbv_buffer_init =
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@ -288,9 +295,24 @@ static av_cold int X264_init(AVCodecContext *avctx)
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x4->params.rc.f_pb_factor = avctx->b_quant_factor;
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x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
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if (x4->fastfirstpass)
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x264_param_apply_fastfirstpass(&x4->params);
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if (x4->profile)
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if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
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return AVERROR(EINVAL);
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}
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x4->params.i_width = avctx->width;
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x4->params.i_height = avctx->height;
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x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
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x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
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x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
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x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
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x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
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x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;
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x4->params.i_log_level = X264_LOG_DEBUG;
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x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD;
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@ -307,6 +329,12 @@ static av_cold int X264_init(AVCodecContext *avctx)
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if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
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x4->params.b_repeat_headers = 0;
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// update AVCodecContext with x264 parameters
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avctx->has_b_frames = x4->params.i_bframe ?
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x4->params.i_bframe_pyramid ? 2 : 1 : 0;
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avctx->bit_rate = x4->params.rc.i_bitrate*1000;
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avctx->crf = x4->params.rc.f_rf_constant;
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x4->enc = x264_encoder_open(&x4->params);
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if (!x4->enc)
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return -1;
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@ -330,6 +358,23 @@ static av_cold int X264_init(AVCodecContext *avctx)
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return 0;
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}
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#define OFFSET(x) offsetof(X264Context, x)
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#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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{ "preset", "Set the encoding preset", OFFSET(preset), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
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{ "tune", "Tune the encoding params", OFFSET(tune), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
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{ "profile", "Set profile restrictions", OFFSET(profile), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
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{ "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), FF_OPT_TYPE_INT, { 1 }, 0, 1, VE},
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{ NULL },
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};
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static const AVClass class = {
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.class_name = "libx264",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVCodec ff_libx264_encoder = {
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.name = "libx264",
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.type = AVMEDIA_TYPE_VIDEO,
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@ -341,4 +386,5 @@ AVCodec ff_libx264_encoder = {
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.capabilities = CODEC_CAP_DELAY,
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.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_NONE },
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.long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
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.priv_class = &class,
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};
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