/*****************************************************************************
* gstcopypicture.h: copy GStreamer frames into pictures
*****************************************************************************
* Copyright (C) 2022 VLC authors and VideoLAN
*
* Author: Yann Lochet <yann@l0chet.fr>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include <vlc_picture.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gstcopypicture.h"
/* Copy the frame data from the GstBuffer (from decoder)
* to the picture obtained from downstream in VLC.
* This function should be avoided as much
* as possible, since it involves a complete frame copy. */
void gst_CopyPicture( picture_t *p_pic, GstVideoFrame *p_frame )
{
int i_plane, i_planes, i_line, i_dst_stride, i_src_stride;
uint8_t *p_dst, *p_src;
int i_w, i_h;
i_planes = p_pic->i_planes;
for( i_plane = 0; i_plane < i_planes; i_plane++ )
{
p_dst = p_pic->p[i_plane].p_pixels;
p_src = GST_VIDEO_FRAME_PLANE_DATA( p_frame, i_plane );
i_dst_stride = p_pic->p[i_plane].i_pitch;
i_src_stride = GST_VIDEO_FRAME_PLANE_STRIDE( p_frame, i_plane );
i_w = GST_VIDEO_FRAME_COMP_WIDTH( p_frame,
i_plane ) * GST_VIDEO_FRAME_COMP_PSTRIDE( p_frame, i_plane );
i_h = GST_VIDEO_FRAME_COMP_HEIGHT( p_frame, i_plane );
for( i_line = 0;
i_line < __MIN( p_pic->p[i_plane].i_lines, i_h );
i_line++ )
{
memcpy( p_dst, p_src, i_w );
p_src += i_src_stride;
p_dst += i_dst_stride;
}
}
}
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