Function hb_video_buffer_realloc

libhb/fifo.c:963–998

this routine reallocs a buffer for an uncompressed video frame with dimensions width x height.

// this routine reallocs a buffer for an uncompressed video frame
// with dimensions width x height.
void hb_video_buffer_realloc( hb_buffer_t * buf, int width, int height )
{
    const AVPixFmtDescriptor * desc = av_pix_fmt_desc_get(buf->f.fmt);
    uint8_t                    has_plane[4] = {0,};
    int                        ii, pp;

    if (desc == NULL)
    {
        return;
    }

    buf->f.max_plane = 0;
    int size = 0;
    for (ii = 0; ii < desc->nb_components; ii++)
    {
        pp = desc->comp[ii].plane;
        if (pp > buf->f.max_plane)
        {
            buf->f.max_plane = pp;
        }
        if (!has_plane[pp])
        {
            has_plane[pp] = 1;
            size += hb_image_stride(buf->f.fmt, width, pp) *
                    hb_image_height(buf->f.fmt, height, pp );
        }
    }

    hb_buffer_realloc(buf, size );

    buf->f.width = width;
    buf->f.height = height;
    buf->size = size;

    hb_buffer_init_planes(buf);
}

// this routine 'moves' data from src to dst by interchanging 'data',
// 'size' & 'alloc' between them and copying the rest of the fields