Function hb_frame_buffer_init

libhb/fifo.c:839–881

this routine gets a buffer for an uncompressed picture with pixel format pix_fmt and dimensions width x height.

// this routine gets a buffer for an uncompressed picture
// with pixel format pix_fmt and dimensions width x height.
hb_buffer_t * hb_frame_buffer_init( int pix_fmt, int width, int height )
{
    const AVPixFmtDescriptor * desc = av_pix_fmt_desc_get(pix_fmt);
    hb_buffer_t              * buf;
    uint8_t                    has_plane[4] = {0,};
    int                        ii, pp, max_plane = 0;

    if (desc == NULL)
    {
        return NULL;
    }

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

    buf = hb_buffer_init_internal(size);

    if( buf == NULL )
        return NULL;

    buf->f.max_plane = max_plane;
    buf->s.type = FRAME_BUF;
    buf->f.width = width;
    buf->f.height = height;
    buf->f.fmt = pix_fmt;

    hb_buffer_init_planes(buf);

    return buf;
}

void hb_frame_buffer_blank_stride(hb_buffer_t * buf)
{