/* * libx265 encoder * * Copyright (c) 2013-2014 Derek Buitenhuis * * This file is part of FFmpeg. * * 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. * * 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #if defined(_MSC_VER) #define X265_API_IMPORTS 1 #endif #include #include "libavutil/internal.h" #include "libavutil/common.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avcodec.h" #include "internal.h" typedef struct libx265Context { const AVClass *class; x265_encoder *encoder; x265_param *params; char *preset; char *tune; char *x265_opts; } libx265Context; static int is_keyframe(NalUnitType naltype) { switch (naltype) { case NAL_UNIT_CODED_SLICE_BLA_W_LP: case NAL_UNIT_CODED_SLICE_BLA_W_RADL: case NAL_UNIT_CODED_SLICE_BLA_N_LP: case NAL_UNIT_CODED_SLICE_IDR_W_RADL: case NAL_UNIT_CODED_SLICE_IDR_N_LP: case NAL_UNIT_CODED_SLICE_CRA: return 1; default: return 0; } } static av_cold int libx265_encode_close(AVCodecContext *avctx) { libx265Context *ctx = avctx->priv_data; av_frame_free(&avctx->coded_frame); x265_param_free(ctx->params); if (ctx->encoder) x265_encoder_close(ctx->encoder); return 0; } static av_cold int libx265_encode_init(AVCodecContext *avctx) { libx265Context *ctx = avctx->priv_data; if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL && !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w) { av_log(avctx, AV_LOG_ERROR, "4:2:2 and 4:4:4 support is not fully defined for HEVC yet. " "Set -strict experimental to encode anyway.\n"); return AVERROR(ENOSYS); } avctx->coded_frame = av_frame_alloc(); if (!avctx->coded_frame) { av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); return AVERROR(ENOMEM); } ctx->params = x265_param_alloc(); if (!ctx->params) { av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param structure.\n"); return AVERROR(ENOMEM); } if (x265_param_default_preset(ctx->params, ctx->preset, ctx->tune) < 0) { av_log(avctx, AV_LOG_ERROR, "Invalid preset or tune.\n"); return AVERROR(EINVAL); } ctx->params->frameNumThreads = avctx->thread_count; ctx->params->fpsNum = avctx->time_base.den; ctx->params->fpsDenom = avctx->time_base.num * avctx->ticks_per_frame; ctx->params->sourceWidth = avctx->width; ctx->params->sourceHeight = avctx->height; ctx->params->bEnablePsnr = !!(avctx->flags & CODEC_FLAG_PSNR); if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0) { char sar[12]; int sar_num, sar_den; av_reduce(&sar_num, &sar_den, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 65535); snprintf(sar, sizeof(sar), "%d:%d", sar_num, sar_den); if (x265_param_parse(ctx->params, "sar", sar) == X265_PARAM_BAD_VALUE) { av_log(avctx, AV_LOG_ERROR, "Invalid SAR: %d:%d.\n", sar_num, sar_den); return AVERROR_INVALIDDATA; } } switch (avctx->pix_fmt) { case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUV420P10: ctx->params->internalCsp = X265_CSP_I420; break; case AV_PIX_FMT_YUV422P: case AV_PIX_FMT_YUV422P10: ctx->params->internalCsp = X265_CSP_I422; break; case AV_PIX_FMT_YUV444P: case AV_PIX_FMT_YUV444P10: ctx->params->internalCsp = X265_CSP_I444; break; } if (avctx->bit_rate > 0) { ctx->params->rc.bitrate = avctx->bit_rate / 1000; ctx->params->rc.rateControlMode = X265_RC_ABR; } if (!(avctx->flags & CODEC_FLAG_GLOBAL_HEADER)) ctx->params->bRepeatHeaders = 1; if (ctx->x265_opts) { AVDictionary *dict = NULL; AVDictionaryEntry *en = NULL; if (!av_dict_parse_string(&dict, ctx->x265_opts, "=", ":", 0)) { while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) { int parse_ret = x265_param_parse(ctx->params, en->key, en->value); switch (parse_ret) { case X265_PARAM_BAD_NAME: av_log(avctx, AV_LOG_WARNING, "Unknown option: %s.\n", en->key); break; case X265_PARAM_BAD_VALUE: av_log(avctx, AV_LOG_WARNING, "Invalid value for %s: %s.\n", en->key, en->value); break; default: break; } } av_dict_free(&dict); } } ctx->encoder = x265_encoder_open(ctx->params); if (!ctx->encoder) { av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n"); libx265_encode_close(avctx); return AVERROR_INVALIDDATA; } if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { x265_nal *nal; int nnal; avctx->extradata_size = x265_encoder_headers(ctx->encoder, &nal, &nnal); if (avctx->extradata_size <= 0) { av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n"); libx265_encode_close(avctx); return AVERROR_INVALIDDATA; } avctx->extradata = av_malloc(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); if (!avctx->extradata) { av_log(avctx, AV_LOG_ERROR, "Cannot allocate HEVC header of size %d.\n", avctx->extradata_size); libx265_encode_close(avctx); return AVERROR(ENOMEM); } memcpy(avctx->extradata, nal[0].payload, avctx->extradata_size); } return 0; } static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet) { libx265Context *ctx = avctx->priv_data; x265_picture x265pic; x265_picture x265pic_out = { { 0 } }; x265_nal *nal; uint8_t *dst; int payload = 0; int nnal; int ret; int i; x265_picture_init(ctx->params, &x265pic); if (pic) { for (i = 0; i < 3; i++) { x265pic.planes[i] = pic->data[i]; x265pic.stride[i] = pic->linesize[i]; } x265pic.pts = pic->pts; x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1; x265pic.sliceType = pic->pict_type == AV_PICTURE_TYPE_I ? X265_TYPE_I : pic->pict_type == AV_PICTURE_TYPE_P ? X265_TYPE_P : pic->pict_type == AV_PICTURE_TYPE_B ? X265_TYPE_B : X265_TYPE_AUTO; } ret = x265_encoder_encode(ctx->encoder, &nal, &nnal, pic ? &x265pic : NULL, &x265pic_out); if (ret < 0) return AVERROR_EXTERNAL; if (!nnal) return 0; for (i = 0; i < nnal; i++) payload += nal[i].sizeBytes; ret = ff_alloc_packet(pkt, payload); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); return ret; } dst = pkt->data; for (i = 0; i < nnal; i++) { memcpy(dst, nal[i].payload, nal[i].sizeBytes); dst += nal[i].sizeBytes; if (is_keyframe(nal[i].type)) pkt->flags |= AV_PKT_FLAG_KEY; } pkt->pts = x265pic_out.pts; pkt->dts = x265pic_out.dts; *got_packet = 1; return 0; } static const enum AVPixelFormat x265_csp_eight[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE }; static const enum AVPixelFormat x265_csp_twelve[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE }; static av_cold void libx265_encode_init_csp(AVCodec *codec) { if (x265_max_bit_depth == 8) codec->pix_fmts = x265_csp_eight; else if (x265_max_bit_depth == 12) codec->pix_fmts = x265_csp_twelve; } #define OFFSET(x) offsetof(libx265Context, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, { "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, { "x265-params", "set the x265 configuration using a :-separated list of key=value parameters", OFFSET(x265_opts), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, { NULL } }; static const AVClass class = { .class_name = "libx265", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; static const AVCodecDefault x265_defaults[] = { { "b", "0" }, { NULL }, }; AVCodec ff_libx265_encoder = { .name = "libx265", .long_name = NULL_IF_CONFIG_SMALL("libx265 H.265 / HEVC"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_HEVC, .init = libx265_encode_init, .init_static_data = libx265_encode_init_csp, .encode2 = libx265_encode_frame, .close = libx265_encode_close, .priv_data_size = sizeof(libx265Context), .priv_class = &class, .defaults = x265_defaults, .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, };