4 * Copyright (c) 2013-2014 Derek Buitenhuis
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libavutil/internal.h"
26 #include "libavutil/common.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
33 #define X265_API_IMPORTS 1
36 typedef struct libx265Context {
39 x265_encoder *encoder;
49 static int is_keyframe(NalUnitType naltype)
52 case NAL_UNIT_CODED_SLICE_BLA_W_LP:
53 case NAL_UNIT_CODED_SLICE_BLA_W_RADL:
54 case NAL_UNIT_CODED_SLICE_BLA_N_LP:
55 case NAL_UNIT_CODED_SLICE_IDR_W_RADL:
56 case NAL_UNIT_CODED_SLICE_IDR_N_LP:
57 case NAL_UNIT_CODED_SLICE_CRA:
64 static av_cold int libx265_encode_close(AVCodecContext *avctx)
66 libx265Context *ctx = avctx->priv_data;
68 av_frame_free(&avctx->coded_frame);
69 av_freep(&ctx->header);
71 x265_param_free(ctx->params);
74 x265_encoder_close(ctx->encoder);
79 static av_cold int libx265_encode_init(AVCodecContext *avctx)
81 libx265Context *ctx = avctx->priv_data;
88 if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL &&
89 !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w &&
90 !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_h) {
91 av_log(avctx, AV_LOG_ERROR,
92 "4:4:4 support is not fully defined for HEVC yet. "
93 "Set -strict experimental to encode anyway.\n");
94 return AVERROR(ENOSYS);
97 avctx->coded_frame = av_frame_alloc();
98 if (!avctx->coded_frame) {
99 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
100 return AVERROR(ENOMEM);
103 ctx->params = x265_param_alloc();
105 av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param structure.\n");
106 return AVERROR(ENOMEM);
109 if (x265_param_default_preset(ctx->params, ctx->preset, ctx->tune) < 0) {
110 av_log(avctx, AV_LOG_ERROR, "Invalid preset or tune.\n");
111 return AVERROR(EINVAL);
114 ctx->params->frameNumThreads = avctx->thread_count;
115 ctx->params->fpsNum = avctx->time_base.den;
116 ctx->params->fpsDenom = avctx->time_base.num * avctx->ticks_per_frame;
117 ctx->params->sourceWidth = avctx->width;
118 ctx->params->sourceHeight = avctx->height;
120 av_reduce(&sar_num, &sar_den,
121 avctx->sample_aspect_ratio.num,
122 avctx->sample_aspect_ratio.den, 4096);
123 ctx->params->vui.bEnableVuiParametersPresentFlag = 1;
124 ctx->params->vui.bEnableAspectRatioIdc = 1;
125 ctx->params->vui.aspectRatioIdc = 255;
126 ctx->params->vui.sarWidth = sar_num;
127 ctx->params->vui.sarHeight = sar_den;
129 if (x265_max_bit_depth == 8)
130 ctx->params->internalBitDepth = 8;
131 else if (x265_max_bit_depth == 12)
132 ctx->params->internalBitDepth = 10;
134 switch (avctx->pix_fmt) {
135 case AV_PIX_FMT_YUV420P:
136 case AV_PIX_FMT_YUV420P10:
137 ctx->params->internalCsp = X265_CSP_I420;
139 case AV_PIX_FMT_YUV444P:
140 case AV_PIX_FMT_YUV444P10:
141 ctx->params->internalCsp = X265_CSP_I444;
145 if (avctx->bit_rate > 0) {
146 ctx->params->rc.bitrate = avctx->bit_rate / 1000;
147 ctx->params->rc.rateControlMode = X265_RC_ABR;
150 if (ctx->x265_opts) {
151 AVDictionary *dict = NULL;
152 AVDictionaryEntry *en = NULL;
154 if (!av_dict_parse_string(&dict, ctx->x265_opts, "=", ":", 0)) {
155 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
156 int parse_ret = x265_param_parse(ctx->params, en->key, en->value);
159 case X265_PARAM_BAD_NAME:
160 av_log(avctx, AV_LOG_WARNING,
161 "Unknown option: %s.\n", en->key);
163 case X265_PARAM_BAD_VALUE:
164 av_log(avctx, AV_LOG_WARNING,
165 "Invalid value for %s: %s.\n", en->key, en->value);
175 ctx->encoder = x265_encoder_open(ctx->params);
177 av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n");
178 libx265_encode_close(avctx);
179 return AVERROR_INVALIDDATA;
182 ret = x265_encoder_headers(ctx->encoder, &nal, &nnal);
184 av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n");
185 libx265_encode_close(avctx);
186 return AVERROR_INVALIDDATA;
189 for (i = 0; i < nnal; i++)
190 ctx->header_size += nal[i].sizeBytes;
192 ctx->header = av_malloc(ctx->header_size + FF_INPUT_BUFFER_PADDING_SIZE);
194 av_log(avctx, AV_LOG_ERROR,
195 "Cannot allocate HEVC header of size %d.\n", ctx->header_size);
196 libx265_encode_close(avctx);
197 return AVERROR(ENOMEM);
200 memcpy(ctx->header, nal[0].payload, ctx->header_size);
202 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
203 avctx->extradata_size = ctx->header_size;
204 avctx->extradata = ctx->header;
206 ctx->header_size = 0;
213 static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
214 const AVFrame *pic, int *got_packet)
216 libx265Context *ctx = avctx->priv_data;
217 x265_picture x265pic;
218 x265_picture x265pic_out = { { 0 } };
226 x265_picture_init(ctx->params, &x265pic);
229 for (i = 0; i < 3; i++) {
230 x265pic.planes[i] = pic->data[i];
231 x265pic.stride[i] = pic->linesize[i];
234 x265pic.pts = pic->pts;
235 x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1;
238 ret = x265_encoder_encode(ctx->encoder, &nal, &nnal,
239 pic ? &x265pic : NULL, &x265pic_out);
241 return AVERROR_UNKNOWN;
246 for (i = 0; i < nnal; i++)
247 payload += nal[i].sizeBytes;
249 payload += ctx->header_size;
251 ret = ff_alloc_packet(pkt, payload);
253 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
259 memcpy(dst, ctx->header, ctx->header_size);
260 dst += ctx->header_size;
262 av_freep(&ctx->header);
263 ctx->header_size = 0;
266 for (i = 0; i < nnal; i++) {
267 memcpy(dst, nal[i].payload, nal[i].sizeBytes);
268 dst += nal[i].sizeBytes;
270 if (is_keyframe(nal[i].type))
271 pkt->flags |= AV_PKT_FLAG_KEY;
274 pkt->pts = x265pic_out.pts;
275 pkt->dts = x265pic_out.dts;
281 static const enum AVPixelFormat x265_csp_eight[] = {
287 static const enum AVPixelFormat x265_csp_twelve[] = {
290 AV_PIX_FMT_YUV420P10,
291 AV_PIX_FMT_YUV444P10,
295 static av_cold void libx265_encode_init_csp(AVCodec *codec)
297 if (x265_max_bit_depth == 8)
298 codec->pix_fmts = x265_csp_eight;
299 else if (x265_max_bit_depth == 12)
300 codec->pix_fmts = x265_csp_twelve;
303 #define OFFSET(x) offsetof(libx265Context, x)
304 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
305 static const AVOption options[] = {
306 { "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
307 { "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
308 { "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 },
312 static const AVClass class = {
313 .class_name = "libx265",
314 .item_name = av_default_item_name,
316 .version = LIBAVUTIL_VERSION_INT,
319 AVCodec ff_libx265_encoder = {
321 .long_name = NULL_IF_CONFIG_SMALL("libx265 H.265 / HEVC"),
322 .type = AVMEDIA_TYPE_VIDEO,
323 .id = AV_CODEC_ID_HEVC,
324 .init = libx265_encode_init,
325 .init_static_data = libx265_encode_init_csp,
326 .encode2 = libx265_encode_frame,
327 .close = libx265_encode_close,
328 .priv_data_size = sizeof(libx265Context),
329 .priv_class = &class,
330 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,