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/* cropscale.c
Copyright (c) 2003-2018 HandBrake Team
This file is part of the HandBrake source code
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License v2.
For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
#include "hb.h"
#include "hbffmpeg.h"
#include "common.h"
struct hb_filter_private_s
{
hb_job_t *job;
int width_in;
int height_in;
int pix_fmt;
int pix_fmt_out;
int width_out;
int height_out;
int crop[4];
struct SwsContext * context;
};
static int hb_crop_scale_init( hb_filter_object_t * filter,
hb_filter_init_t * init );
static int hb_crop_scale_work( hb_filter_object_t * filter,
hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out );
static hb_filter_info_t * hb_crop_scale_info( hb_filter_object_t * filter );
static void hb_crop_scale_close( hb_filter_object_t * filter );
static const char crop_scale_template[] =
"width=^"HB_INT_REG"$:height=^"HB_INT_REG"$:"
"crop-top=^"HB_INT_REG"$:crop-bottom=^"HB_INT_REG"$:"
"crop-left=^"HB_INT_REG"$:crop-right=^"HB_INT_REG"$";
hb_filter_object_t hb_filter_crop_scale =
{
.id = HB_FILTER_CROP_SCALE,
.enforce_order = 1,
.name = "Crop and Scale",
.settings = NULL,
.init = hb_crop_scale_init,
.work = hb_crop_scale_work,
.close = hb_crop_scale_close,
.info = hb_crop_scale_info,
.settings_template = crop_scale_template,
};
static int hb_crop_scale_init( hb_filter_object_t * filter,
hb_filter_init_t * init )
{
filter->private_data = calloc( 1, sizeof(struct hb_filter_private_s) );
hb_filter_private_t * pv = filter->private_data;
// TODO: add pix format option to settings
pv->job = init->job;
pv->pix_fmt_out = init->pix_fmt;
pv->width_in = init->geometry.width;
pv->height_in = init->geometry.height;
pv->width_out = init->geometry.width - (init->crop[2] + init->crop[3]);
pv->height_out = init->geometry.height - (init->crop[0] + init->crop[1]);
memcpy( pv->crop, init->crop, sizeof( int[4] ) );
hb_dict_extract_int(&pv->width_out, filter->settings, "width");
hb_dict_extract_int(&pv->height_out, filter->settings, "height");
hb_dict_extract_int(&pv->crop[0], filter->settings, "crop-top");
hb_dict_extract_int(&pv->crop[1], filter->settings, "crop-bottom");
hb_dict_extract_int(&pv->crop[2], filter->settings, "crop-left");
hb_dict_extract_int(&pv->crop[3], filter->settings, "crop-right");
// Set init values so the next stage in the pipline
// knows what it will be getting
init->pix_fmt = pv->pix_fmt;
init->geometry.width = pv->width_out;
init->geometry.height = pv->height_out;
memcpy( init->crop, pv->crop, sizeof( int[4] ) );
return 0;
}
static hb_filter_info_t * hb_crop_scale_info( hb_filter_object_t * filter )
{
hb_filter_private_t * pv = filter->private_data;
hb_filter_info_t * info;
if( !pv )
return NULL;
info = calloc(1, sizeof(hb_filter_info_t));
info->human_readable_desc = malloc(128);
info->human_readable_desc[0] = 0;
info->out.pix_fmt = pv->pix_fmt;
info->out.geometry.width = pv->width_out;
info->out.geometry.height = pv->height_out;
memcpy( info->out.crop, pv->crop, sizeof( int[4] ) );
int cropped_width = pv->width_in - ( pv->crop[2] + pv->crop[3] );
int cropped_height = pv->height_in - ( pv->crop[0] + pv->crop[1] );
snprintf( info->human_readable_desc, 128,
"source: %d * %d, crop (%d/%d/%d/%d): %d * %d, scale: %d * %d",
pv->width_in, pv->height_in,
pv->crop[0], pv->crop[1], pv->crop[2], pv->crop[3],
cropped_width, cropped_height, pv->width_out, pv->height_out );
return info;
}
static void hb_crop_scale_close( hb_filter_object_t * filter )
{
hb_filter_private_t * pv = filter->private_data;
if ( !pv )
{
return;
}
if( pv->context )
{
sws_freeContext( pv->context );
}
free( pv );
filter->private_data = NULL;
}
static hb_buffer_t* crop_scale( hb_filter_private_t * pv, hb_buffer_t * in )
{
hb_buffer_t * out;
uint8_t * crop_data[4], * out_data[4];
int crop_stride[4], out_stride[4];
out = hb_video_buffer_init( pv->width_out, pv->height_out );
hb_picture_fill(out_data, out_stride, out);
// Crop; this alters the pointer to the data to point to the
// correct place for cropped frame
hb_picture_crop(crop_data, crop_stride, in, pv->crop[0], pv->crop[2]);
if (pv->context == NULL ||
pv->width_in != in->f.width ||
pv->height_in != in->f.height ||
pv->pix_fmt != in->f.fmt)
{
// Something changed, need a new scaling context.
if (pv->context != NULL)
{
sws_freeContext(pv->context);
}
pv->context = hb_sws_get_context(
in->f.width - (pv->crop[2] + pv->crop[3]),
in->f.height - (pv->crop[0] + pv->crop[1]),
in->f.fmt, out->f.width, out->f.height,
out->f.fmt, SWS_LANCZOS|SWS_ACCURATE_RND,
hb_ff_get_colorspace(pv->job->title->color_matrix));
pv->width_in = in->f.width;
pv->height_in = in->f.height;
pv->pix_fmt = in->f.fmt;
}
if (pv->context == NULL)
{
hb_buffer_close(&out);
return NULL;
}
// Scale crop into out according to the context set up above
sws_scale(pv->context,
(const uint8_t* const*)crop_data, crop_stride,
0, in->f.height - (pv->crop[0] + pv->crop[1]),
out_data, out_stride);
out->s = in->s;
return out;
}
static int hb_crop_scale_work( hb_filter_object_t * filter,
hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out )
{
hb_filter_private_t * pv = filter->private_data;
hb_buffer_t * in = *buf_in;
if (in->s.flags & HB_BUF_FLAG_EOF)
{
*buf_out = in;
*buf_in = NULL;
return HB_FILTER_DONE;
}
if ( !pv )
{
*buf_out = in;
*buf_in = NULL;
return HB_FILTER_OK;
}
// If width or height were not set, set them now based on the
// input width & height
if ( pv->width_out <= 0 || pv->height_out <= 0 )
{
pv->width_out = in->f.width - (pv->crop[2] + pv->crop[3]);
pv->height_out = in->f.height - (pv->crop[0] + pv->crop[1]);
}
if (!pv->crop[0] && !pv->crop[1] && !pv->crop[2] && !pv->crop[3] &&
in->f.fmt == pv->pix_fmt_out && in->f.width == pv->width_out &&
in->f.height == pv->height_out)
{
*buf_out = in;
*buf_in = NULL;
return HB_FILTER_OK;
}
*buf_out = crop_scale(pv, in);
return HB_FILTER_OK;
}
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