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
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_EXTERNAL
;
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
,