| 1 | /* |
| 2 | * libx265 encoder |
| 3 | * |
| 4 | * Copyright (c) 2013-2014 Derek Buitenhuis |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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 |
| 21 | */ |
| 22 | |
| 23 | #if defined(_MSC_VER) |
| 24 | #define X265_API_IMPORTS 1 |
| 25 | #endif |
| 26 | |
| 27 | #include <x265.h> |
| 28 | |
| 29 | #include "libavutil/internal.h" |
| 30 | #include "libavutil/common.h" |
| 31 | #include "libavutil/opt.h" |
| 32 | #include "libavutil/pixdesc.h" |
| 33 | #include "avcodec.h" |
| 34 | #include "internal.h" |
| 35 | |
| 36 | typedef struct libx265Context { |
| 37 | const AVClass *class; |
| 38 | |
| 39 | x265_encoder *encoder; |
| 40 | x265_param *params; |
| 41 | |
| 42 | char *preset; |
| 43 | char *tune; |
| 44 | char *x265_opts; |
| 45 | } libx265Context; |
| 46 | |
| 47 | static int is_keyframe(NalUnitType naltype) |
| 48 | { |
| 49 | switch (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: |
| 56 | return 1; |
| 57 | default: |
| 58 | return 0; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | static av_cold int libx265_encode_close(AVCodecContext *avctx) |
| 63 | { |
| 64 | libx265Context *ctx = avctx->priv_data; |
| 65 | |
| 66 | av_frame_free(&avctx->coded_frame); |
| 67 | |
| 68 | x265_param_free(ctx->params); |
| 69 | |
| 70 | if (ctx->encoder) |
| 71 | x265_encoder_close(ctx->encoder); |
| 72 | |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | static av_cold int libx265_encode_init(AVCodecContext *avctx) |
| 77 | { |
| 78 | libx265Context *ctx = avctx->priv_data; |
| 79 | x265_nal *nal; |
| 80 | char sar[12]; |
| 81 | int sar_num, sar_den; |
| 82 | int nnal; |
| 83 | |
| 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); |
| 90 | } |
| 91 | |
| 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); |
| 96 | } |
| 97 | |
| 98 | ctx->params = x265_param_alloc(); |
| 99 | if (!ctx->params) { |
| 100 | av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param structure.\n"); |
| 101 | return AVERROR(ENOMEM); |
| 102 | } |
| 103 | |
| 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); |
| 107 | } |
| 108 | |
| 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 & CODEC_FLAG_PSNR); |
| 115 | |
| 116 | if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0) { |
| 117 | av_reduce(&sar_num, &sar_den, |
| 118 | avctx->sample_aspect_ratio.num, |
| 119 | avctx->sample_aspect_ratio.den, 65535); |
| 120 | snprintf(sar, sizeof(sar), "%d:%d", sar_num, sar_den); |
| 121 | if (x265_param_parse(ctx->params, "sar", sar) == X265_PARAM_BAD_VALUE) { |
| 122 | av_log(avctx, AV_LOG_ERROR, "Invalid SAR: %d:%d.\n", sar_num, sar_den); |
| 123 | return AVERROR_INVALIDDATA; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | switch (avctx->pix_fmt) { |
| 128 | case AV_PIX_FMT_YUV420P: |
| 129 | case AV_PIX_FMT_YUV420P10: |
| 130 | ctx->params->internalCsp = X265_CSP_I420; |
| 131 | break; |
| 132 | case AV_PIX_FMT_YUV422P: |
| 133 | case AV_PIX_FMT_YUV422P10: |
| 134 | ctx->params->internalCsp = X265_CSP_I422; |
| 135 | break; |
| 136 | case AV_PIX_FMT_YUV444P: |
| 137 | case AV_PIX_FMT_YUV444P10: |
| 138 | ctx->params->internalCsp = X265_CSP_I444; |
| 139 | break; |
| 140 | } |
| 141 | |
| 142 | if (avctx->bit_rate > 0) { |
| 143 | ctx->params->rc.bitrate = avctx->bit_rate / 1000; |
| 144 | ctx->params->rc.rateControlMode = X265_RC_ABR; |
| 145 | } |
| 146 | |
| 147 | if (!(avctx->flags & CODEC_FLAG_GLOBAL_HEADER)) |
| 148 | ctx->params->bRepeatHeaders = 1; |
| 149 | |
| 150 | if (ctx->x265_opts) { |
| 151 | AVDictionary *dict = NULL; |
| 152 | AVDictionaryEntry *en = NULL; |
| 153 | |
| 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); |
| 157 | |
| 158 | switch (parse_ret) { |
| 159 | case X265_PARAM_BAD_NAME: |
| 160 | av_log(avctx, AV_LOG_WARNING, |
| 161 | "Unknown option: %s.\n", en->key); |
| 162 | break; |
| 163 | case X265_PARAM_BAD_VALUE: |
| 164 | av_log(avctx, AV_LOG_WARNING, |
| 165 | "Invalid value for %s: %s.\n", en->key, en->value); |
| 166 | break; |
| 167 | default: |
| 168 | break; |
| 169 | } |
| 170 | } |
| 171 | av_dict_free(&dict); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | ctx->encoder = x265_encoder_open(ctx->params); |
| 176 | if (!ctx->encoder) { |
| 177 | av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n"); |
| 178 | libx265_encode_close(avctx); |
| 179 | return AVERROR_INVALIDDATA; |
| 180 | } |
| 181 | |
| 182 | if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { |
| 183 | avctx->extradata_size = x265_encoder_headers(ctx->encoder, &nal, &nnal); |
| 184 | if (avctx->extradata_size <= 0) { |
| 185 | av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n"); |
| 186 | libx265_encode_close(avctx); |
| 187 | return AVERROR_INVALIDDATA; |
| 188 | } |
| 189 | |
| 190 | avctx->extradata = av_malloc(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); |
| 191 | if (!avctx->extradata) { |
| 192 | av_log(avctx, AV_LOG_ERROR, |
| 193 | "Cannot allocate HEVC header of size %d.\n", avctx->extradata_size); |
| 194 | libx265_encode_close(avctx); |
| 195 | return AVERROR(ENOMEM); |
| 196 | } |
| 197 | |
| 198 | memcpy(avctx->extradata, nal[0].payload, avctx->extradata_size); |
| 199 | } |
| 200 | |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| 205 | const AVFrame *pic, int *got_packet) |
| 206 | { |
| 207 | libx265Context *ctx = avctx->priv_data; |
| 208 | x265_picture x265pic; |
| 209 | x265_picture x265pic_out = { { 0 } }; |
| 210 | x265_nal *nal; |
| 211 | uint8_t *dst; |
| 212 | int payload = 0; |
| 213 | int nnal; |
| 214 | int ret; |
| 215 | int i; |
| 216 | |
| 217 | x265_picture_init(ctx->params, &x265pic); |
| 218 | |
| 219 | if (pic) { |
| 220 | for (i = 0; i < 3; i++) { |
| 221 | x265pic.planes[i] = pic->data[i]; |
| 222 | x265pic.stride[i] = pic->linesize[i]; |
| 223 | } |
| 224 | |
| 225 | x265pic.pts = pic->pts; |
| 226 | x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1; |
| 227 | } |
| 228 | |
| 229 | ret = x265_encoder_encode(ctx->encoder, &nal, &nnal, |
| 230 | pic ? &x265pic : NULL, &x265pic_out); |
| 231 | if (ret < 0) |
| 232 | return AVERROR_EXTERNAL; |
| 233 | |
| 234 | if (!nnal) |
| 235 | return 0; |
| 236 | |
| 237 | for (i = 0; i < nnal; i++) |
| 238 | payload += nal[i].sizeBytes; |
| 239 | |
| 240 | ret = ff_alloc_packet(pkt, payload); |
| 241 | if (ret < 0) { |
| 242 | av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); |
| 243 | return ret; |
| 244 | } |
| 245 | dst = pkt->data; |
| 246 | |
| 247 | for (i = 0; i < nnal; i++) { |
| 248 | memcpy(dst, nal[i].payload, nal[i].sizeBytes); |
| 249 | dst += nal[i].sizeBytes; |
| 250 | |
| 251 | if (is_keyframe(nal[i].type)) |
| 252 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 253 | } |
| 254 | |
| 255 | pkt->pts = x265pic_out.pts; |
| 256 | pkt->dts = x265pic_out.dts; |
| 257 | |
| 258 | *got_packet = 1; |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | static const enum AVPixelFormat x265_csp_eight[] = { |
| 263 | AV_PIX_FMT_YUV420P, |
| 264 | AV_PIX_FMT_YUV422P, |
| 265 | AV_PIX_FMT_YUV444P, |
| 266 | AV_PIX_FMT_NONE |
| 267 | }; |
| 268 | |
| 269 | static const enum AVPixelFormat x265_csp_twelve[] = { |
| 270 | AV_PIX_FMT_YUV420P, |
| 271 | AV_PIX_FMT_YUV422P, |
| 272 | AV_PIX_FMT_YUV444P, |
| 273 | AV_PIX_FMT_YUV420P10, |
| 274 | AV_PIX_FMT_YUV422P10, |
| 275 | AV_PIX_FMT_YUV444P10, |
| 276 | AV_PIX_FMT_NONE |
| 277 | }; |
| 278 | |
| 279 | static av_cold void libx265_encode_init_csp(AVCodec *codec) |
| 280 | { |
| 281 | if (x265_max_bit_depth == 8) |
| 282 | codec->pix_fmts = x265_csp_eight; |
| 283 | else if (x265_max_bit_depth == 12) |
| 284 | codec->pix_fmts = x265_csp_twelve; |
| 285 | } |
| 286 | |
| 287 | #define OFFSET(x) offsetof(libx265Context, x) |
| 288 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
| 289 | static const AVOption options[] = { |
| 290 | { "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, |
| 291 | { "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE }, |
| 292 | { "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 }, |
| 293 | { NULL } |
| 294 | }; |
| 295 | |
| 296 | static const AVClass class = { |
| 297 | .class_name = "libx265", |
| 298 | .item_name = av_default_item_name, |
| 299 | .option = options, |
| 300 | .version = LIBAVUTIL_VERSION_INT, |
| 301 | }; |
| 302 | |
| 303 | static const AVCodecDefault x265_defaults[] = { |
| 304 | { "b", "0" }, |
| 305 | { NULL }, |
| 306 | }; |
| 307 | |
| 308 | AVCodec ff_libx265_encoder = { |
| 309 | .name = "libx265", |
| 310 | .long_name = NULL_IF_CONFIG_SMALL("libx265 H.265 / HEVC"), |
| 311 | .type = AVMEDIA_TYPE_VIDEO, |
| 312 | .id = AV_CODEC_ID_HEVC, |
| 313 | .init = libx265_encode_init, |
| 314 | .init_static_data = libx265_encode_init_csp, |
| 315 | .encode2 = libx265_encode_frame, |
| 316 | .close = libx265_encode_close, |
| 317 | .priv_data_size = sizeof(libx265Context), |
| 318 | .priv_class = &class, |
| 319 | .defaults = x265_defaults, |
| 320 | .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, |
| 321 | }; |