This source file includes following definitions.
- is_keyframe
- libx265_encode_close
- libx265_encode_init
- libx265_encode_frame
- libx265_encode_init_csp
#if defined(_MSC_VER)
#define X265_API_IMPORTS 1
#endif
#include <x265.h>
#include <float.h>
#include "libavutil/internal.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "internal.h"
typedef struct libx265Context {
const AVClass *class;
x265_encoder *encoder;
x265_param *params;
float crf;
char *preset;
char *tune;
char *x265_opts;
} libx265Context;
static int is_keyframe(NalUnitType naltype)
{
switch (naltype) {
case NAL_UNIT_CODED_SLICE_BLA_W_LP:
case NAL_UNIT_CODED_SLICE_BLA_W_RADL:
case NAL_UNIT_CODED_SLICE_BLA_N_LP:
case NAL_UNIT_CODED_SLICE_IDR_W_RADL:
case NAL_UNIT_CODED_SLICE_IDR_N_LP:
case NAL_UNIT_CODED_SLICE_CRA:
return 1;
default:
return 0;
}
}
static av_cold int libx265_encode_close(AVCodecContext *avctx)
{
libx265Context *ctx = avctx->priv_data;
av_frame_free(&avctx->coded_frame);
x265_param_free(ctx->params);
if (ctx->encoder)
x265_encoder_close(ctx->encoder);
return 0;
}
static av_cold int libx265_encode_init(AVCodecContext *avctx)
{
libx265Context *ctx = avctx->priv_data;
if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL &&
!av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w) {
av_log(avctx, AV_LOG_ERROR,
"4:2:2 and 4:4:4 support is not fully defined for HEVC yet. "
"Set -strict experimental to encode anyway.\n");
return AVERROR(ENOSYS);
}
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
return AVERROR(ENOMEM);
}
ctx->params = x265_param_alloc();
if (!ctx->params) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate x265 param structure.\n");
return AVERROR(ENOMEM);
}
if (x265_param_default_preset(ctx->params, ctx->preset, ctx->tune) < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid preset or tune.\n");
return AVERROR(EINVAL);
}
ctx->params->frameNumThreads = avctx->thread_count;
ctx->params->fpsNum = avctx->time_base.den;
ctx->params->fpsDenom = avctx->time_base.num * avctx->ticks_per_frame;
ctx->params->sourceWidth = avctx->width;
ctx->params->sourceHeight = avctx->height;
ctx->params->bEnablePsnr = !!(avctx->flags & CODEC_FLAG_PSNR);
if (avctx->sample_aspect_ratio.num > 0 && avctx->sample_aspect_ratio.den > 0) {
char sar[12];
int sar_num, sar_den;
av_reduce(&sar_num, &sar_den,
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den, 65535);
snprintf(sar, sizeof(sar), "%d:%d", sar_num, sar_den);
if (x265_param_parse(ctx->params, "sar", sar) == X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid SAR: %d:%d.\n", sar_num, sar_den);
return AVERROR_INVALIDDATA;
}
}
switch (avctx->pix_fmt) {
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUV420P10:
ctx->params->internalCsp = X265_CSP_I420;
break;
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV422P10:
ctx->params->internalCsp = X265_CSP_I422;
break;
case AV_PIX_FMT_YUV444P:
case AV_PIX_FMT_YUV444P10:
ctx->params->internalCsp = X265_CSP_I444;
break;
}
if (ctx->crf >= 0) {
char crf[6];
snprintf(crf, sizeof(crf), "%2.2f", ctx->crf);
if (x265_param_parse(ctx->params, "crf", crf) == X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid crf: %2.2f.\n", ctx->crf);
return AVERROR(EINVAL);
}
} else if (avctx->bit_rate > 0) {
ctx->params->rc.bitrate = avctx->bit_rate / 1000;
ctx->params->rc.rateControlMode = X265_RC_ABR;
}
if (!(avctx->flags & CODEC_FLAG_GLOBAL_HEADER))
ctx->params->bRepeatHeaders = 1;
if (ctx->x265_opts) {
AVDictionary *dict = NULL;
AVDictionaryEntry *en = NULL;
if (!av_dict_parse_string(&dict, ctx->x265_opts, "=", ":", 0)) {
while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
int parse_ret = x265_param_parse(ctx->params, en->key, en->value);
switch (parse_ret) {
case X265_PARAM_BAD_NAME:
av_log(avctx, AV_LOG_WARNING,
"Unknown option: %s.\n", en->key);
break;
case X265_PARAM_BAD_VALUE:
av_log(avctx, AV_LOG_WARNING,
"Invalid value for %s: %s.\n", en->key, en->value);
break;
default:
break;
}
}
av_dict_free(&dict);
}
}
ctx->encoder = x265_encoder_open(ctx->params);
if (!ctx->encoder) {
av_log(avctx, AV_LOG_ERROR, "Cannot open libx265 encoder.\n");
libx265_encode_close(avctx);
return AVERROR_INVALIDDATA;
}
if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
x265_nal *nal;
int nnal;
avctx->extradata_size = x265_encoder_headers(ctx->encoder, &nal, &nnal);
if (avctx->extradata_size <= 0) {
av_log(avctx, AV_LOG_ERROR, "Cannot encode headers.\n");
libx265_encode_close(avctx);
return AVERROR_INVALIDDATA;
}
avctx->extradata = av_malloc(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata) {
av_log(avctx, AV_LOG_ERROR,
"Cannot allocate HEVC header of size %d.\n", avctx->extradata_size);
libx265_encode_close(avctx);
return AVERROR(ENOMEM);
}
memcpy(avctx->extradata, nal[0].payload, avctx->extradata_size);
}
return 0;
}
static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
libx265Context *ctx = avctx->priv_data;
x265_picture x265pic;
x265_picture x265pic_out = { { 0 } };
x265_nal *nal;
uint8_t *dst;
int payload = 0;
int nnal;
int ret;
int i;
x265_picture_init(ctx->params, &x265pic);
if (pic) {
for (i = 0; i < 3; i++) {
x265pic.planes[i] = pic->data[i];
x265pic.stride[i] = pic->linesize[i];
}
x265pic.pts = pic->pts;
x265pic.bitDepth = av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1;
x265pic.sliceType = pic->pict_type == AV_PICTURE_TYPE_I ? X265_TYPE_I :
pic->pict_type == AV_PICTURE_TYPE_P ? X265_TYPE_P :
pic->pict_type == AV_PICTURE_TYPE_B ? X265_TYPE_B :
X265_TYPE_AUTO;
}
ret = x265_encoder_encode(ctx->encoder, &nal, &nnal,
pic ? &x265pic : NULL, &x265pic_out);
if (ret < 0)
return AVERROR_EXTERNAL;
if (!nnal)
return 0;
for (i = 0; i < nnal; i++)
payload += nal[i].sizeBytes;
ret = ff_alloc_packet(pkt, payload);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
return ret;
}
dst = pkt->data;
for (i = 0; i < nnal; i++) {
memcpy(dst, nal[i].payload, nal[i].sizeBytes);
dst += nal[i].sizeBytes;
if (is_keyframe(nal[i].type))
pkt->flags |= AV_PKT_FLAG_KEY;
}
pkt->pts = x265pic_out.pts;
pkt->dts = x265pic_out.dts;
*got_packet = 1;
return 0;
}
static const enum AVPixelFormat x265_csp_eight[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV444P,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat x265_csp_twelve[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUV420P10,
AV_PIX_FMT_YUV422P10,
AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_NONE
};
static av_cold void libx265_encode_init_csp(AVCodec *codec)
{
if (x265_max_bit_depth == 8)
codec->pix_fmts = x265_csp_eight;
else if (x265_max_bit_depth == 12)
codec->pix_fmts = x265_csp_twelve;
}
#define OFFSET(x) offsetof(libx265Context, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "crf", "set the x265 crf", OFFSET(crf), AV_OPT_TYPE_FLOAT, { .dbl = -1 }, -1, FLT_MAX, VE },
{ "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ "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 },
{ NULL }
};
static const AVClass class = {
.class_name = "libx265",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVCodecDefault x265_defaults[] = {
{ "b", "0" },
{ NULL },
};
AVCodec ff_libx265_encoder = {
.name = "libx265",
.long_name = NULL_IF_CONFIG_SMALL("libx265 H.265 / HEVC"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_HEVC,
.init = libx265_encode_init,
.init_static_data = libx265_encode_init_csp,
.encode2 = libx265_encode_frame,
.close = libx265_encode_close,
.priv_data_size = sizeof(libx265Context),
.priv_class = &class,
.defaults = x265_defaults,
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
};