char * hb_dict_to_encopts( hb_dict_t * dict )
{
int first_opt = 1;
char *tmp, *encopts_tmp, *encopts = NULL;
hb_dict_entry_t * entry = NULL;
while( ( entry = hb_dict_next( dict, entry ) ) )
{
tmp = hb_strdup_printf( "%s%s%s%s",
first_opt ? "" : ":",
entry->key,
entry->value ? "=" : "",
entry->value ? entry->value : "" );
if( tmp )
{
encopts_tmp = hb_strncat_dup( encopts, tmp, strlen( tmp ) );
if( encopts_tmp )
{
if( encopts )
free( encopts );
encopts = encopts_tmp;
}
first_opt = 0;
free( tmp );
}
}
return encopts;
}
/***********************************************************************
* hb_work_encx265_init
***********************************************************************
*
**********************************************************************/
int encx265Init(hb_work_object_t *w, hb_job_t *job)
{
hb_work_private_t *pv = calloc(1, sizeof(hb_work_private_t));
pv->next_chapter_pts = AV_NOPTS_VALUE;
pv->delayed_chapters = hb_list_init();
pv->job = job;
w->private_data = pv;
int i, vrate, vrate_base;
x265_nal *nal;
uint32_t nnal;
x265_param *param = pv->param = x265_param_alloc();
if (x265_param_default_preset(param,
job->encoder_preset, job->encoder_tune) < 0)
{
free(pv);
pv = NULL;
return 1;
}
/* If the PSNR or SSIM tunes are in use, enable the relevant metric */
param->bEnablePsnr = param->bEnableSsim = 0;
if (job->encoder_tune != NULL && *job->encoder_tune)
{
char *tmp = strdup(job->encoder_tune);
char *tok = strtok(tmp, ",./-+");
do
{
if (!strncasecmp(tok, "psnr", 4))
{
param->bEnablePsnr = 1;
break;
}
if (!strncasecmp(tok, "ssim", 4))
{
param->bEnableSsim = 1;
break;
}
}
while ((tok = strtok(NULL, ",./-+")) != NULL);
free(tmp);
}
/*
* Some HandBrake-specific defaults; users can override them
* using the encoder_options string.
*/
hb_reduce(&vrate, &vrate_base, job->vrate, job->vrate_base);
param->fpsNum = vrate;
param->fpsDenom = vrate_base;
param->keyframeMin = (int)((double)vrate / (double)vrate_base + 0.5);
param->keyframeMax = param->keyframeMin * 10;
/* iterate through x265_opts and parse the options */
hb_dict_entry_t *entry = NULL;
hb_dict_t *x265_opts = hb_encopts_to_dict(job->encoder_options, job->vcodec);
while ((entry = hb_dict_next(x265_opts, entry)) != NULL)
{
// here's where the strings are passed to libx265 for parsing
int ret = x265_param_parse(param, entry->key, entry->value);
// let x265 sanity check the options for us
switch (ret)
{
case X265_PARAM_BAD_NAME:
hb_log("encx265: unknown option '%s'", entry->key);
break;
case X265_PARAM_BAD_VALUE:
hb_log("encx265: bad argument '%s=%s'", entry->key,
entry->value ? entry->value : "(null)");
break;
default:
break;
}
}
hb_dict_free(&x265_opts);
/*
* Settings which can't be overriden in the encodeer_options string
* (muxer-specific settings, resolution, ratecontrol, etc.).
*/
param->sourceWidth = job->width;
param->sourceHeight = job->height;
if (job->vquality > 0)
{
param->rc.rateControlMode = X265_RC_CRF;
param->rc.rfConstant = job->vquality;
}
else
{
param->rc.rateControlMode = X265_RC_ABR;
param->rc.bitrate = job->vbitrate;
}
/* statsfile (but not 2-pass) */
memset(pv->csvfn, 0, sizeof(pv->csvfn));
if (param->logLevel >= X265_LOG_DEBUG)
{
if (param->csvfn == NULL)
{
hb_get_tempory_filename(job->h, pv->csvfn, "x265.csv");
param->csvfn = pv->csvfn;
}
else
{
strncpy(pv->csvfn, param->csvfn, sizeof(pv->csvfn));
}
}
/* Apply profile and level settings last. */
if (x265_param_apply_profile(param, job->encoder_profile) < 0)
{
free(pv);
pv = NULL;
return 1;
}
/* we should now know whether B-frames are enabled */
job->areBframes = (param->bframes > 0) + (param->bframes > 0 &&
param->bBPyramid > 0);
pv->x265 = x265_encoder_open(param);
if (pv->x265 == NULL)
{
hb_error("encx265: x265_encoder_open failed.");
free(pv);
pv = NULL;
return 1;
}
if (x265_encoder_headers(pv->x265, &nal, &nnal) < 0)
{
hb_error("encx265: x265_encoder_headers failed.");
free(pv);
pv = NULL;
return 1;
}
/*
* x265's output (headers and bitstream) are in Annex B format.
*
* Write the header as is, and let the muxer reformat
* the extradata and output bitstream properly for us.
*/
w->config->h265.headers_length = 0;
for (i = 0; i < nnal; i++)
{
if (w->config->h265.headers_length +
nal[i].sizeBytes > HB_CONFIG_MAX_SIZE)
{
hb_error("encx265: bitstream headers too large");
free(pv);
pv = NULL;
return 1;
}
memcpy(w->config->h265.headers +
w->config->h265.headers_length,
nal[i].payload, nal[i].sizeBytes);
w->config->h265.headers_length += nal[i].sizeBytes;
}
return 0;
}