X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Flibx264.c;h=50688fd3ef828a50bf585e7e053b5d00760d39ff;hb=03eff2bf430a1d80e0854dfd58c8b353f774edde;hp=af17705de461a5cda4a9a91dccd737030b2ee686;hpb=682a48a1077200b947eb412aab8f5dacfa7d03a5;p=ffmpeg diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c index af17705de46..50688fd3ef8 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 * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * 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. * - * FFmpeg is distributed in the hope that it will be useful, + * 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 FFmpeg; if not, write to the Free Software + * 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 #include @@ -27,14 +28,20 @@ #include typedef struct X264Context { - x264_param_t params; - x264_t *enc; - x264_picture_t pic; - AVFrame out_pic; + 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; } X264Context; -static void -X264_log(void *p, int level, const char *fmt, va_list args) +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, @@ -43,31 +50,44 @@ X264_log(void *p, int level, const char *fmt, va_list args) [X264_LOG_DEBUG] = AV_LOG_DEBUG }; - if(level < 0 || level > X264_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) +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; - for(i = 0; i < nnal; i++){ - int s = x264_nal_encode(p, &size, 1, nals + i); - if(s < 0) - return -1; - p += s; + /* 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) +static int X264_frame(AVCodecContext *ctx, uint8_t *buf, + int bufsize, void *data) { X264Context *x4 = ctx->priv_data; AVFrame *frame = data; @@ -75,227 +95,297 @@ X264_frame(AVCodecContext *ctx, uint8_t *buf, int bufsize, void *data) int nnal, i; x264_picture_t pic_out; - x4->pic.img.i_csp = X264_CSP_I420; + 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]; + 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; + 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); + } } - if(x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, - &pic_out)) + do { + if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0) return -1; - bufsize = encode_nals(buf, bufsize, nal, nnal); - if(bufsize < 0) + bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0); + if (bufsize < 0) return -1; + } while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc)); - /* FIXME: dts */ + /* 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){ + switch (pic_out.i_type) { case X264_TYPE_IDR: case X264_TYPE_I: - x4->out_pic.pict_type = FF_I_TYPE; + x4->out_pic.pict_type = AV_PICTURE_TYPE_I; break; case X264_TYPE_P: - x4->out_pic.pict_type = FF_P_TYPE; + x4->out_pic.pict_type = AV_PICTURE_TYPE_P; break; case X264_TYPE_B: case X264_TYPE_BREF: - x4->out_pic.pict_type = FF_B_TYPE; + x4->out_pic.pict_type = AV_PICTURE_TYPE_B; break; } - x4->out_pic.key_frame = pic_out.i_type == X264_TYPE_IDR; - x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; + 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) +static av_cold int X264_close(AVCodecContext *avctx) { X264Context *x4 = avctx->priv_data; - if(x4->enc) + 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) +static av_cold int X264_init(AVCodecContext *avctx) { X264Context *x4 = avctx->priv_data; + 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.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_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) + 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.i_scenecut_threshold = avctx->scenechange_threshold; - x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; + 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.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.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_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_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 = 0; + if (avctx->partitions) { + if (avctx->partitions & X264_PART_I4X4) x4->params.analyse.inter |= X264_ANALYSE_I4x4; - if(avctx->partitions & X264_PART_I8X8) + if (avctx->partitions & X264_PART_I8X8) x4->params.analyse.inter |= X264_ANALYSE_I8x8; - if(avctx->partitions & X264_PART_P8X8) + if (avctx->partitions & X264_PART_P8X8) x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16; - if(avctx->partitions & X264_PART_P4X4) + if (avctx->partitions & X264_PART_P4X4) x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8; - if(avctx->partitions & X264_PART_B8X8) + 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.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) + if (avctx->me_method == ME_EPZS) x4->params.analyse.i_me_method = X264_ME_DIA; - else if(avctx->me_method == ME_HEX) + else if (avctx->me_method == ME_HEX) x4->params.analyse.i_me_method = X264_ME_HEX; - else if(avctx->me_method == ME_UMH) + else if (avctx->me_method == ME_UMH) x4->params.analyse.i_me_method = X264_ME_UMH; - else if(avctx->me_method == ME_FULL) + 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.i_me_range = avctx->me_range; - x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; + x4->params.rc.i_aq_mode = avctx->aq_mode; + x4->params.rc.f_aq_strength = avctx->aq_strength; + x4->params.rc.i_lookahead = avctx->rc_lookahead; + + x4->params.analyse.b_psy = avctx->flags2 & CODEC_FLAG2_PSY; + x4->params.analyse.f_psy_rd = avctx->psy_rd; + x4->params.analyse.f_psy_trellis = avctx->psy_trellis; - 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_me_range = avctx->me_range; + x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; - x4->params.analyse.i_trellis = avctx->trellis; - x4->params.analyse.i_noise_reduction = avctx->noise_reduction; + 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; - if(avctx->level > 0) x4->params.i_level_idc = avctx->level; + x4->params.analyse.i_trellis = avctx->trellis; + x4->params.analyse.i_noise_reduction = avctx->noise_reduction; - x4->params.rc.f_rate_tolerance = - (float)avctx->bit_rate_tolerance/avctx->bit_rate; + if (avctx->level > 0) + x4->params.i_level_idc = avctx->level; - if((avctx->rc_buffer_size != 0) && - (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)){ + 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; + 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; + + 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; + (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.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; - x4->params.rc.psz_rc_eq = avctx->rc_eq; + + 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.i_log_level = X264_LOG_DEBUG; + 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_aud = avctx->flags2 & CODEC_FLAG2_AUD; + x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; - x4->params.i_threads = avctx->thread_count; + x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP); - if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){ + 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; + avctx->crf = x4->params.rc.f_rf_constant; x4->enc = x264_encoder_open(&x4->params); - if(!x4->enc) + if (!x4->enc) return -1; avctx->coded_frame = &x4->out_pic; - if(avctx->flags & CODEC_FLAG_GLOBAL_HEADER){ + if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { x264_nal_t *nal; - int nnal, i, s = 0; + int nnal, s, i; - x264_encoder_headers(x4->enc, &nal, &nnal); + s = 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; + 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->extradata, s, nal, nnal); + avctx->extradata = av_malloc(s); + avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1); } return 0; } -AVCodec libx264_encoder = { - .name = "libx264", - .type = CODEC_TYPE_VIDEO, - .id = CODEC_ID_H264, +#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}, + { NULL }, +}; + +static const AVClass class = { + .class_name = "libx264", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +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 = (enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE }, - .long_name = "libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10", + .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, };