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ffmpeg / libavfilter / libmpcodecs / vf_tile.c @ e4852fb3

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/*
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 * filter to tile a serie of image in a single, bigger, image
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 *
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 * The parameters are:
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 *
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 *    xtile:  number of tile on the x axis (5)
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 *    ytile:  number of tile on the y axis (5)
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 *    xytile: when write the image, it can be different then xtile * ytile
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 *            (for example you can write 8 * 7 tile, writing the file every
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 *            50 frame, to have one image every 2 seconds @ 25 fps ).
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 *    start:  pixel at the start (x/y), default 2
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 *    delta:  pixel between 2 tile, (x/y), default 4
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 *
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 * For example a valid command line is:
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 *    ... -vf tile=10:5:-1:4:8 ...
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 * that make images of 10 * 5 tiles, with 4 pixel at the beginning and
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 * 8 pixel between tiles.
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 *
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 * The default command is:
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 *    ... -vf tile=5:5:25:2:4
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 *
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 * If you omit a parameter or put a value less then 0, the default is used.
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 *    ... -vf tile=10:5::-1:10
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 *
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 * You can also stop when you're ok
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 *    ... -vf tile=10:5
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 * (and this is probably the option you will use more often ...)
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 *
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 * Probably is good to put the scale filter before the tile :-)
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 *
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 * copyright (c) 2003 Daniele Forghieri ( guru@digitalfantasy.it )
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 *
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 * This file is part of MPlayer.
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 *
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 * MPlayer is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * MPlayer is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License along
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 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 */
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// strtoi memcpy_pic
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "cpudetect.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "libvo/fastmemcpy.h"
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/* private data */
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struct vf_priv_s {
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    /* configuration data */
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    /* Number on hor/ver tiles */
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    int  xtile;
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    int  ytile;
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    /* When write the whole frame (default = xtile * ytile) */
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    int  xytile;
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    /* pixel at start / end (default = 4) */
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    int  start;
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    /* pixel between image (default = 2) */
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    int  delta;
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//    /* Background color, in destination format */
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//    int  bkgSet;
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    /* Work data */
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    int  frame_cur;
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};
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static int config(struct vf_instance *vf,
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                  int width, int height, int d_width, int d_height,
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              unsigned int flags, unsigned int outfmt){
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    struct vf_priv_s  *priv;
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    int               xw;
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    int               yh;
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    /* Calculate new destination size */
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    priv = vf->priv;
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    xw = priv->start * 2 +
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        priv->xtile * width +
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        (priv->xtile - 1) * priv->delta;
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    yh = priv->start * 2 +
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        priv->ytile * height +
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        (priv->ytile - 1) * priv->delta;
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    mp_msg(MSGT_VFILTER,MSGL_V,"vf_tile:config size set to %d * %d\n", xw, yh);
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    return vf_next_config(vf, xw, yh, xw, yh, flags, outfmt);
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}
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/* Filter handler */
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static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
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{
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    mp_image_t        *dmpi;
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    struct vf_priv_s  *priv;
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    int               t;
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    int               xw;
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    int               yh;
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    int               xi;
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    int               yi;
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    int               by;
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    int               dw;
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    /* Calculate new size */
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    priv = vf->priv;
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    xw = priv->start * 2 +
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        priv->xtile * mpi->w +
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        (priv->xtile - 1) * priv->delta;
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    yh = priv->start * 2 +
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        priv->ytile * mpi->h+
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        (priv->ytile - 1) * priv->delta;
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    /* Get the big image! */
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    dmpi=vf_get_image(vf->next, mpi->imgfmt,
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                      MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE,
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                      xw, yh);
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    /* bytes x pixel & bytes x line */
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    if (mpi->flags & MP_IMGFLAG_PLANAR) {
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        by = 1;
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        dw = mpi->w;
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    }
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    else {
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        by = (mpi->bpp + 7) / 8;
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        dw = mpi->w * by;
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    }
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    /* Index position */
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    t = priv->frame_cur % priv->xytile;
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//    if ((t == 0) && (bkg != 0)) {
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//        /* First frame, delete the background */
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//
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//    }
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    /* Position of image */
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    xi = priv->start + (mpi->w + priv->delta) * (t % priv->xtile);
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    yi = priv->start + (mpi->h + priv->delta) * (t / priv->xtile);
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    /* Copy first (or only) plane */
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    memcpy_pic( dmpi->planes[0] + xi * by + yi * dmpi->stride[0],
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                mpi->planes[0],
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                dw,
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                mpi->h,
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                dmpi->stride[0],
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                mpi->stride[0]);
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    if (mpi->flags & MP_IMGFLAG_PLANAR) {
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        /* Copy the other 2 planes */
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        memcpy_pic( dmpi->planes[1] + (xi >> mpi->chroma_x_shift) + (yi >> mpi->chroma_y_shift) * dmpi->stride[1],
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                    mpi->planes[1],
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                    mpi->chroma_width,
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                    mpi->chroma_height,
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                    dmpi->stride[1],
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                    mpi->stride[1]);
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         memcpy_pic( dmpi->planes[2] + (xi >> mpi->chroma_x_shift) + (yi >> mpi->chroma_y_shift) * dmpi->stride[2],
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                    mpi->planes[2],
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                    mpi->chroma_width,
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                    mpi->chroma_height,
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                    dmpi->stride[2],
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                    mpi->stride[2]);
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    }
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    /* Increment current frame */
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    ++priv->frame_cur;
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    if (t == priv->xytile - 1)  {
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        /* Display the composition */
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        dmpi->width  = xw;
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        dmpi->height = yh;
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        return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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    }
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    else {
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        /* Skip the frame */
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        return 0;
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    }
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}
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static void uninit(struct vf_instance *vf)
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{
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    /* free local data */
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    free(vf->priv);
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}
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/* rgb/bgr 12...32 supported & some Yxxx */
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static int query_format(struct vf_instance *vf, unsigned int fmt)
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{
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    switch (fmt) {
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        /* rgb 12...32 bit */
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        case IMGFMT_RGB12:
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        case IMGFMT_RGB15:
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        case IMGFMT_RGB16:
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        case IMGFMT_RGB24:
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        case IMGFMT_RGB32:
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        /* bgr 12...32 bit */
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        case IMGFMT_BGR12:
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        case IMGFMT_BGR15:
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        case IMGFMT_BGR16:
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        case IMGFMT_BGR24:
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        case IMGFMT_BGR32:
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        /* Various Yxxx Formats */
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        case IMGFMT_444P:
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        case IMGFMT_422P:
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        case IMGFMT_411P:
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        case IMGFMT_YUY2:
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        case IMGFMT_YV12:
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        case IMGFMT_I420:
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        case IMGFMT_YVU9:
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        case IMGFMT_IF09:
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        case IMGFMT_IYUV:
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        return vf_next_query_format(vf, fmt);
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    }
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    return 0;
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}
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/* Get an integer from the string pointed by s, adjusting s.
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 * If the value is less then 0 def_val is used.
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 * Return 0 for ok
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 *
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 * Look below ( in vf_open(...) ) for a use ...
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 */
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static int parse_int(char **s, int *rt, int def_val)
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{
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    int     t = 0;
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    if (**s) {
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        /* Get value (dec, hex or octal) */
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        t = strtol( *s, s, 0 );
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        /* Use default */
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        if (t < 0) {
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            t = def_val;
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        }
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        if (**s == ':') {
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            /* Point to next character (problably a digit) */
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            ++(*s);
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        }
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        else if (**s != '\0') {
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            /* Error, we got some wrong char */
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            return 1;
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        }
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    }
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    else {
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        t = def_val;
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    }
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    *rt = t;
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    return 0;
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}
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/* Main entry funct for the filter */
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static int vf_open(vf_instance_t *vf, char *args)
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{
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    struct vf_priv_s *p;
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    int              er;
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    vf->put_image    = put_image;
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    vf->query_format = query_format;
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    vf->config       = config;
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    vf->uninit       = uninit;
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    vf->default_reqs = VFCAP_ACCEPT_STRIDE;
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    /* Private data */
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    vf->priv = p = calloc(1, sizeof(struct vf_priv_s));
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    if (p == NULL) {
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        return 0;
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    }
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    if (args == NULL) {
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        /* Use the default */
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        args = "";
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    }
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    /* Parse all the arguments */
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    er =  parse_int( &args, &p->xtile,  5 );
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    er |= parse_int( &args, &p->ytile,  5 );
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    er |= parse_int( &args, &p->xytile, 0 );
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    er |= parse_int( &args, &p->start,  2 );
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    er |= parse_int( &args, &p->delta,  4 );
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//    er |= parse_int( &args, &p->bkgSet, 0 );
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    if (er) {
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        mp_msg(MSGT_VFILTER, MSGL_ERR, MSGTR_MPCODECS_ErrorParsingArgument);
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        return 0;
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    }
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    /* Load some default */
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    if ((p->xytile <= 0) || (p->xytile > p->xtile * p->ytile)) {
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        p->xytile = p->xtile * p->ytile;
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    }
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    /* Say what happen: use mp_msg(...)? */
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    if ( mp_msg_test(MSGT_VFILTER,MSGL_V) ) {
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        printf("vf_tile: tiling %d * %d, output every %d frames\n",
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               p->xtile,
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               p->ytile,
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               p->xytile);
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        printf("vf_tile: start pixel %d, delta pixel %d\n",
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               p->start,
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               p->delta);
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//      printf("vf_tile: background 0x%x\n",
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//             p->bkgSet);
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    }
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    return 1;
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}
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const vf_info_t vf_info_tile = {
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    "Make a single image tiling x/y images",
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    "tile",
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    "Daniele Forghieri",
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    "",
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    vf_open,
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    NULL
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};