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
24 #define X265_API_IMPORTS 1
29 #include "libavutil/internal.h"
30 #include "libavutil/common.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
36 typedef struct libx265Context {
39 x265_encoder *encoder;
47 static int is_keyframe(NalUnitType naltype)
50 case NAL_UNIT_CODED_SLICE_BLA_W_LP:
51 case NAL_UNIT_CODED_SLICE_BLA_W_RADL:
52 case NAL_UNIT_CODED_SLICE_BLA_N_LP:
53 case NAL_UNIT_CODED_SLICE_IDR_W_RADL:
54 case NAL_UNIT_CODED_SLICE_IDR_N_LP:
55 case NAL_UNIT_CODED_SLICE_CRA:
62 static av_cold int libx265_encode_close(AVCodecContext *avctx)
64 libx265Context *ctx = avctx->priv_data;
66 av_frame_free(&avctx->coded_frame);
68 x265_param_free(ctx->params);
71 x265_encoder_close(ctx->encoder);
76 static av_cold int libx265_encode_init(AVCodecContext *avctx)
78 libx265Context *ctx = avctx->priv_data;
84 if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL &&
85 !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w) {
86 av_log(avctx, AV_LOG_ERROR,
87 "4:2:2 and 4:4:4 support is not fully defined for HEVC yet. "
88 "Set -strict experimental to encode anyway.\n");
89 return AVERROR(ENOSYS);
92 avctx->coded_frame = av_frame_alloc();
93 if (!avctx->coded_frame) {
94 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
95 return AVERROR(ENOMEM);
98 ctx->params = x265_param_alloc();
100 av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param structure.\n");
101 return AVERROR(ENOMEM);
104 if (x265_param_default_preset(ctx->params, ctx->preset, ctx->tune) < 0) {
105 av_log(avctx, AV_LOG_ERROR, "Invalid preset or tune.\n");
106 return AVERROR(EINVAL);
109 ctx->params->frameNumThreads = avctx->thread_count;
110 ctx->params->fpsNum = avctx->time_base.den;
111 ctx->params->fpsDenom = avctx->time_base.num * avctx->ticks_per_frame;
112 ctx->params->sourceWidth = avctx->width;
113 ctx->params->sourceHeight = avctx->height;
115 if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0) {
116 av_reduce(&sar_num, &sar_den,
117 avctx->sample_aspect_ratio.num,
118 avctx->sample_aspect_ratio.den, 65535);
119 snprintf(sar, sizeof(sar), "%d:%d", sar_num, sar_den);
120 if (x265_param_parse(ctx->params, "sar", sar) == X265_PARAM_BAD_VALUE) {
121 av_log(avctx, AV_LOG_ERROR, "Invalid SAR: %d:%d.\n", sar_num, sar_den);
122 return AVERROR_INVALIDDATA;
126 switch (avctx->pix_fmt) {
127 case AV_PIX_FMT_YUV420P:
128 case AV_PIX_FMT_YUV420P10:
129 ctx->params->internalCsp = X265_CSP_I420;
131 case AV_PIX_FMT_YUV422P:
132 case AV_PIX_FMT_YUV422P10:
133 ctx->params->internalCsp = X265_CSP_I422;
135 case AV_PIX_FMT_YUV444P:
136 case AV_PIX_FMT_YUV444P10:
137 ctx->params->internalCsp = X265_CSP_I444;
141 if (avctx->bit_rate > 0) {
142 ctx->params->rc.bitrate = avctx->bit_rate / 1000;
143 ctx->params->rc.rateControlMode = X265_RC_ABR;
146 if (!(avctx->flags & CODEC_FLAG_GLOBAL_HEADER))
147 ctx->params->bRepeatHeaders = 1;
149 if (ctx->x265_opts) {
150 AVDictionary *dict = NULL;
151 AVDictionaryEntry *en = NULL;
153 if (!av_dict_parse_string(&dict, ctx->x265_opts, "=", ":", 0)) {
154 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
155 int parse_ret = x265_param_parse(ctx->params, en->key, en->value);
158 case X265_PARAM_BAD_NAME:
159 av_log(avctx, AV_LOG_WARNING,
160 "Unknown option: %s.\n", en->key);
162 case X265_PARAM_BAD_VALUE:
163 av_log(avctx, AV_LOG_WARNING,
164 "Invalid value for %s: %s.\n", en->key, en->value);
174 ctx->encoder = x265_encoder_open(ctx->params);
176 av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n");
177 libx265_encode_close(avctx);
178 return AVERROR_INVALIDDATA;
181 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
182 avctx->extradata_size = x265_encoder_headers(ctx->encoder, &nal, &nnal);
183 if (avctx->extradata_size <= 0) {
184 av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n");
185 libx265_encode_close(avctx);
186 return AVERROR_INVALIDDATA;
189 avctx->extradata = av_malloc(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
190 if (!avctx->extradata) {
191 av_log(avctx, AV_LOG_ERROR,
192 "Cannot allocate HEVC header of size %d.\n", avctx->extradata_size);
193 libx265_encode_close(avctx);
194 return AVERROR(ENOMEM);
197 memcpy(avctx->extradata, nal[0].payload, avctx->extradata_size);
203 static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
204 const AVFrame *pic, int *got_packet)
206 libx265Context *ctx = avctx->priv_data;
207 x265_picture x265pic;
208 x265_picture x265pic_out = { { 0 } };
216 x265_picture_init(ctx->params, &x265pic);
219 for (i = 0; i < 3; i++) {
220 x265pic.planes[i] = pic->data[i];
221 x265pic.stride[i] = pic->linesize[i];
224 x265pic.pts = pic->pts;
225 x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1;
228 ret = x265_encoder_encode(ctx->encoder, &nal, &nnal,
229 pic ? &x265pic : NULL, &x265pic_out);
231 return AVERROR_UNKNOWN;
236 for (i = 0; i < nnal; i++)
237 payload += nal[i].sizeBytes;
239 ret = ff_alloc_packet(pkt, payload);
241 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
246 for (i = 0; i < nnal; i++) {
247 memcpy(dst, nal[i].payload, nal[i].sizeBytes);
248 dst += nal[i].sizeBytes;
250 if (is_keyframe(nal[i].type))
251 pkt->flags |= AV_PKT_FLAG_KEY;
254 pkt->pts = x265pic_out.pts;
255 pkt->dts = x265pic_out.dts;
261 static const enum AVPixelFormat x265_csp_eight[] = {
268 static const enum AVPixelFormat x265_csp_twelve[] = {
272 AV_PIX_FMT_YUV420P10,
273 AV_PIX_FMT_YUV422P10,
274 AV_PIX_FMT_YUV444P10,
278 static av_cold void libx265_encode_init_csp(AVCodec *codec)
280 if (x265_max_bit_depth == 8)
281 codec->pix_fmts = x265_csp_eight;
282 else if (x265_max_bit_depth == 12)
283 codec->pix_fmts = x265_csp_twelve;
286 #define OFFSET(x) offsetof(libx265Context, x)
287 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
288 static const AVOption options[] = {
289 { "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
290 { "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
291 { "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 },
295 static const AVClass class = {
296 .class_name = "libx265",
297 .item_name = av_default_item_name,
299 .version = LIBAVUTIL_VERSION_INT,
302 static const AVCodecDefault x265_defaults[] = {
307 AVCodec ff_libx265_encoder = {
309 .long_name = NULL_IF_CONFIG_SMALL("libx265 H.265 / HEVC"),
310 .type = AVMEDIA_TYPE_VIDEO,
311 .id = AV_CODEC_ID_HEVC,
312 .init = libx265_encode_init,
313 .init_static_data = libx265_encode_init_csp,
314 .encode2 = libx265_encode_frame,
315 .close = libx265_encode_close,
316 .priv_data_size = sizeof(libx265Context),
317 .priv_class = &class,
318 .defaults = x265_defaults,
319 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,