4 * Copyright (c) 2013-2014 Derek Buitenhuis
6 * This file is part of FFmpeg.
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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
30 #include "libavutil/internal.h"
31 #include "libavutil/common.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixdesc.h"
37 typedef struct libx265Context {
40 x265_encoder *encoder;
50 static int is_keyframe(NalUnitType naltype)
53 case NAL_UNIT_CODED_SLICE_BLA_W_LP:
54 case NAL_UNIT_CODED_SLICE_BLA_W_RADL:
55 case NAL_UNIT_CODED_SLICE_BLA_N_LP:
56 case NAL_UNIT_CODED_SLICE_IDR_W_RADL:
57 case NAL_UNIT_CODED_SLICE_IDR_N_LP:
58 case NAL_UNIT_CODED_SLICE_CRA:
65 static av_cold int libx265_encode_close(AVCodecContext *avctx)
67 libx265Context *ctx = avctx->priv_data;
69 ctx->api->param_free(ctx->params);
72 ctx->api->encoder_close(ctx->encoder);
77 static av_cold int libx265_encode_init(AVCodecContext *avctx)
79 libx265Context *ctx = avctx->priv_data;
81 ctx->api = x265_api_get(av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth);
83 ctx->api = x265_api_get(0);
85 ctx->params = ctx->api->param_alloc();
87 av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param structure.\n");
88 return AVERROR(ENOMEM);
91 if (ctx->api->param_default_preset(ctx->params, ctx->preset, ctx->tune) < 0) {
94 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", ctx->preset, ctx->tune);
95 av_log(avctx, AV_LOG_INFO, "Possible presets:");
96 for (i = 0; x265_preset_names[i]; i++)
97 av_log(avctx, AV_LOG_INFO, " %s", x265_preset_names[i]);
99 av_log(avctx, AV_LOG_INFO, "\n");
100 av_log(avctx, AV_LOG_INFO, "Possible tunes:");
101 for (i = 0; x265_tune_names[i]; i++)
102 av_log(avctx, AV_LOG_INFO, " %s", x265_tune_names[i]);
104 av_log(avctx, AV_LOG_INFO, "\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;
114 ctx->params->bEnablePsnr = !!(avctx->flags & AV_CODEC_FLAG_PSNR);
116 if ((avctx->color_primaries <= AVCOL_PRI_BT2020 &&
117 avctx->color_primaries != AVCOL_PRI_UNSPECIFIED) ||
118 (avctx->color_trc <= AVCOL_TRC_BT2020_12 &&
119 avctx->color_trc != AVCOL_TRC_UNSPECIFIED) ||
120 (avctx->colorspace <= AVCOL_SPC_BT2020_CL &&
121 avctx->colorspace != AVCOL_SPC_UNSPECIFIED)) {
123 ctx->params->vui.bEnableVideoSignalTypePresentFlag = 1;
124 ctx->params->vui.bEnableColorDescriptionPresentFlag = 1;
126 // x265 validates the parameters internally
127 ctx->params->vui.colorPrimaries = avctx->color_primaries;
128 ctx->params->vui.transferCharacteristics = avctx->color_trc;
129 ctx->params->vui.matrixCoeffs = avctx->colorspace;
132 if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0) {
134 int sar_num, sar_den;
136 av_reduce(&sar_num, &sar_den,
137 avctx->sample_aspect_ratio.num,
138 avctx->sample_aspect_ratio.den, 65535);
139 snprintf(sar, sizeof(sar), "%d:%d", sar_num, sar_den);
140 if (ctx->api->param_parse(ctx->params, "sar", sar) == X265_PARAM_BAD_VALUE) {
141 av_log(avctx, AV_LOG_ERROR, "Invalid SAR: %d:%d.\n", sar_num, sar_den);
142 return AVERROR_INVALIDDATA;
146 switch (avctx->pix_fmt) {
147 case AV_PIX_FMT_YUV420P:
148 case AV_PIX_FMT_YUV420P10:
149 case AV_PIX_FMT_YUV420P12:
150 ctx->params->internalCsp = X265_CSP_I420;
152 case AV_PIX_FMT_YUV422P:
153 case AV_PIX_FMT_YUV422P10:
154 case AV_PIX_FMT_YUV422P12:
155 ctx->params->internalCsp = X265_CSP_I422;
157 case AV_PIX_FMT_YUV444P:
158 case AV_PIX_FMT_YUV444P10:
159 case AV_PIX_FMT_YUV444P12:
160 ctx->params->internalCsp = X265_CSP_I444;
167 snprintf(crf, sizeof(crf), "%2.2f", ctx->crf);
168 if (ctx->api->param_parse(ctx->params, "crf", crf) == X265_PARAM_BAD_VALUE) {
169 av_log(avctx, AV_LOG_ERROR, "Invalid crf: %2.2f.\n", ctx->crf);
170 return AVERROR(EINVAL);
172 } else if (avctx->bit_rate > 0) {
173 ctx->params->rc.bitrate = avctx->bit_rate / 1000;
174 ctx->params->rc.rateControlMode = X265_RC_ABR;
177 if (!(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER))
178 ctx->params->bRepeatHeaders = 1;
180 if (ctx->x265_opts) {
181 AVDictionary *dict = NULL;
182 AVDictionaryEntry *en = NULL;
184 if (!av_dict_parse_string(&dict, ctx->x265_opts, "=", ":", 0)) {
185 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
186 int parse_ret = ctx->api->param_parse(ctx->params, en->key, en->value);
189 case X265_PARAM_BAD_NAME:
190 av_log(avctx, AV_LOG_WARNING,
191 "Unknown option: %s.\n", en->key);
193 case X265_PARAM_BAD_VALUE:
194 av_log(avctx, AV_LOG_WARNING,
195 "Invalid value for %s: %s.\n", en->key, en->value);
205 ctx->encoder = ctx->api->encoder_open(ctx->params);
207 av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n");
208 libx265_encode_close(avctx);
209 return AVERROR_INVALIDDATA;
212 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
216 avctx->extradata_size = ctx->api->encoder_headers(ctx->encoder, &nal, &nnal);
217 if (avctx->extradata_size <= 0) {
218 av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n");
219 libx265_encode_close(avctx);
220 return AVERROR_INVALIDDATA;
223 avctx->extradata = av_malloc(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
224 if (!avctx->extradata) {
225 av_log(avctx, AV_LOG_ERROR,
226 "Cannot allocate HEVC header of size %d.\n", avctx->extradata_size);
227 libx265_encode_close(avctx);
228 return AVERROR(ENOMEM);
231 memcpy(avctx->extradata, nal[0].payload, avctx->extradata_size);
237 static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
238 const AVFrame *pic, int *got_packet)
240 libx265Context *ctx = avctx->priv_data;
241 x265_picture x265pic;
242 x265_picture x265pic_out = { 0 };
250 ctx->api->picture_init(ctx->params, &x265pic);
253 for (i = 0; i < 3; i++) {
254 x265pic.planes[i] = pic->data[i];
255 x265pic.stride[i] = pic->linesize[i];
258 x265pic.pts = pic->pts;
259 x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth;
261 x265pic.sliceType = pic->pict_type == AV_PICTURE_TYPE_I ? X265_TYPE_I :
262 pic->pict_type == AV_PICTURE_TYPE_P ? X265_TYPE_P :
263 pic->pict_type == AV_PICTURE_TYPE_B ? X265_TYPE_B :
267 ret = ctx->api->encoder_encode(ctx->encoder, &nal, &nnal,
268 pic ? &x265pic : NULL, &x265pic_out);
270 return AVERROR_EXTERNAL;
275 for (i = 0; i < nnal; i++)
276 payload += nal[i].sizeBytes;
278 ret = ff_alloc_packet(pkt, payload);
280 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
285 for (i = 0; i < nnal; i++) {
286 memcpy(dst, nal[i].payload, nal[i].sizeBytes);
287 dst += nal[i].sizeBytes;
289 if (is_keyframe(nal[i].type))
290 pkt->flags |= AV_PKT_FLAG_KEY;
293 pkt->pts = x265pic_out.pts;
294 pkt->dts = x265pic_out.dts;
296 #if FF_API_CODED_FRAME
297 FF_DISABLE_DEPRECATION_WARNINGS
298 switch (x265pic_out.sliceType) {
301 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
304 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
307 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
310 FF_ENABLE_DEPRECATION_WARNINGS
317 static const enum AVPixelFormat x265_csp_eight[] = {
324 static const enum AVPixelFormat x265_csp_ten[] = {
328 AV_PIX_FMT_YUV420P10,
329 AV_PIX_FMT_YUV422P10,
330 AV_PIX_FMT_YUV444P10,
334 static const enum AVPixelFormat x265_csp_twelve[] = {
338 AV_PIX_FMT_YUV420P10,
339 AV_PIX_FMT_YUV422P10,
340 AV_PIX_FMT_YUV444P10,
341 AV_PIX_FMT_YUV420P12,
342 AV_PIX_FMT_YUV422P12,
343 AV_PIX_FMT_YUV444P12,
347 static av_cold void libx265_encode_init_csp(AVCodec *codec)
349 if (x265_api_get(12))
350 codec->pix_fmts = x265_csp_twelve;
351 else if (x265_api_get(10))
352 codec->pix_fmts = x265_csp_ten;
353 else if (x265_api_get(8))
354 codec->pix_fmts = x265_csp_eight;
357 #define OFFSET(x) offsetof(libx265Context, x)
358 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
359 static const AVOption options[] = {
360 { "crf", "set the x265 crf", OFFSET(crf), AV_OPT_TYPE_FLOAT, { .dbl = -1 }, -1, FLT_MAX, VE },
361 { "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
362 { "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
363 { "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 },
367 static const AVClass class = {
368 .class_name = "libx265",
369 .item_name = av_default_item_name,
371 .version = LIBAVUTIL_VERSION_INT,
374 static const AVCodecDefault x265_defaults[] = {
379 AVCodec ff_libx265_encoder = {
381 .long_name = NULL_IF_CONFIG_SMALL("libx265 H.265 / HEVC"),
382 .type = AVMEDIA_TYPE_VIDEO,
383 .id = AV_CODEC_ID_HEVC,
384 .init = libx265_encode_init,
385 .init_static_data = libx265_encode_init_csp,
386 .encode2 = libx265_encode_frame,
387 .close = libx265_encode_close,
388 .priv_data_size = sizeof(libx265Context),
389 .priv_class = &class,
390 .defaults = x265_defaults,
391 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,