| /* |
| * 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 |
| */ |
| |
| #include <x265.h> |
| |
| #include "libavutil/internal.h" |
| #include "libavutil/common.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avcodec.h" |
| #include "internal.h" |
| |
| #if defined(_MSC_VER) |
| #define X265_API_IMPORTS 1 |
| #endif |
| |
| typedef struct libx265Context { |
| const AVClass *class; |
| |
| x265_encoder *encoder; |
| x265_param *params; |
| uint8_t *header; |
| int header_size; |
| |
| 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); |
| av_freep(&ctx->header); |
| |
| 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; |
| x265_nal *nal; |
| uint8_t *buf; |
| char sar[10]; |
| int sar_num, sar_den; |
| int nnal; |
| int ret; |
| int i; |
| |
| if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL && |
| !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w && |
| !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_h) { |
| av_log(avctx, AV_LOG_ERROR, |
| "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; |
| |
| av_reduce(&sar_num, &sar_den, |
| avctx->sample_aspect_ratio.num, |
| avctx->sample_aspect_ratio.den, 4096); |
| 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; |
| } |
| |
| if (x265_max_bit_depth == 8) |
| ctx->params->internalBitDepth = 8; |
| else if (x265_max_bit_depth == 12) |
| ctx->params->internalBitDepth = 10; |
| |
| 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_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 (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; |
| } |
| |
| ret = x265_encoder_headers(ctx->encoder, &nal, &nnal); |
| if (ret < 0) { |
| av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n"); |
| libx265_encode_close(avctx); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| for (i = 0; i < nnal; i++) |
| ctx->header_size += nal[i].sizeBytes; |
| |
| ctx->header = av_malloc(ctx->header_size + FF_INPUT_BUFFER_PADDING_SIZE); |
| if (!ctx->header) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Cannot allocate HEVC header of size %d.\n", ctx->header_size); |
| libx265_encode_close(avctx); |
| return AVERROR(ENOMEM); |
| } |
| |
| buf = ctx->header; |
| for (i = 0; i < nnal; i++) { |
| memcpy(buf, nal[i].payload, nal[i].sizeBytes); |
| buf += nal[i].sizeBytes; |
| } |
| |
| if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { |
| avctx->extradata_size = ctx->header_size; |
| avctx->extradata = ctx->header; |
| ctx->header_size = 0; |
| ctx->header = NULL; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| |
| payload += ctx->header_size; |
| |
| 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; |
| |
| if (ctx->header) { |
| memcpy(dst, ctx->header, ctx->header_size); |
| dst += ctx->header_size; |
| |
| av_freep(&ctx->header); |
| ctx->header_size = 0; |
| } |
| |
| 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_YUV444P, |
| AV_PIX_FMT_NONE |
| }; |
| |
| static const enum AVPixelFormat x265_csp_twelve[] = { |
| AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_YUV444P, |
| AV_PIX_FMT_YUV420P10, |
| 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, |
| }; |
| |
| 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, |
| .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, |
| }; |