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- /*
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include "config.h"
- #include <stdio.h>
- #include <stdlib.h>
- #if HAVE_MALLOC_H
- #include <malloc.h>
- #endif
- #include <string.h>
- #include <inttypes.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <unistd.h>
- #include "mp_msg.h"
- #include "img_format.h"
- #include "mp_image.h"
- #include "vf.h"
- #include "vf_scale.h"
- #include "libswscale/swscale.h"
- #include "libavcodec/avcodec.h"
- struct vf_priv_s {
- int frameno;
- char fname[102];
- /// shot stores current screenshot mode:
- /// 0: don't take screenshots
- /// 1: take single screenshot, reset to 0 afterwards
- /// 2: take screenshots of each frame
- int shot, store_slices;
- int dw, dh, stride;
- uint8_t *buffer;
- struct SwsContext *ctx;
- AVCodecContext *avctx;
- uint8_t *outbuffer;
- int outbuffer_size;
- };
- //===========================================================================//
- static int config(struct vf_instance *vf,
- int width, int height, int d_width, int d_height,
- unsigned int flags, unsigned int outfmt)
- {
- vf->priv->ctx=sws_getContextFromCmdLine(width, height, outfmt,
- d_width, d_height, IMGFMT_RGB24);
- vf->priv->outbuffer_size = d_width * d_height * 3 * 2;
- vf->priv->outbuffer = realloc(vf->priv->outbuffer, vf->priv->outbuffer_size);
- vf->priv->avctx->width = d_width;
- vf->priv->avctx->height = d_height;
- vf->priv->avctx->pix_fmt = PIX_FMT_RGB24;
- vf->priv->avctx->compression_level = 0;
- vf->priv->dw = d_width;
- vf->priv->dh = d_height;
- vf->priv->stride = (3*vf->priv->dw+15)&~15;
- free(vf->priv->buffer); // probably reconfigured
- vf->priv->buffer = NULL;
- return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
- }
- static void write_png(struct vf_priv_s *priv)
- {
- char *fname = priv->fname;
- FILE * fp;
- AVFrame pic;
- int size;
- fp = fopen (fname, "wb");
- if (fp == NULL) {
- mp_msg(MSGT_VFILTER,MSGL_ERR,"\nPNG Error opening %s for writing!\n", fname);
- return;
- }
- pic.data[0] = priv->buffer;
- pic.linesize[0] = priv->stride;
- size = avcodec_encode_video(priv->avctx, priv->outbuffer, priv->outbuffer_size, &pic);
- if (size > 0)
- fwrite(priv->outbuffer, size, 1, fp);
- fclose (fp);
- }
- static int fexists(char *fname)
- {
- struct stat dummy;
- if (stat(fname, &dummy) == 0) return 1;
- else return 0;
- }
- static void gen_fname(struct vf_priv_s* priv)
- {
- do {
- snprintf (priv->fname, 100, "shot%04d.png", ++priv->frameno);
- } while (fexists(priv->fname) && priv->frameno < 100000);
- if (fexists(priv->fname)) {
- priv->fname[0] = '\0';
- return;
- }
- mp_msg(MSGT_VFILTER,MSGL_INFO,"*** screenshot '%s' ***\n",priv->fname);
- }
- static void scale_image(struct vf_priv_s* priv, mp_image_t *mpi)
- {
- uint8_t *dst[MP_MAX_PLANES] = {NULL};
- int dst_stride[MP_MAX_PLANES] = {0};
- dst_stride[0] = priv->stride;
- if (!priv->buffer)
- priv->buffer = av_malloc(dst_stride[0]*priv->dh);
- dst[0] = priv->buffer;
- sws_scale(priv->ctx, mpi->planes, mpi->stride, 0, priv->dh, dst, dst_stride);
- }
- static void start_slice(struct vf_instance *vf, mp_image_t *mpi)
- {
- vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
- mpi->type, mpi->flags, mpi->width, mpi->height);
- if (vf->priv->shot) {
- vf->priv->store_slices = 1;
- if (!vf->priv->buffer)
- vf->priv->buffer = av_malloc(vf->priv->stride*vf->priv->dh);
- }
- }
- static void draw_slice(struct vf_instance *vf, unsigned char** src,
- int* stride, int w,int h, int x, int y)
- {
- if (vf->priv->store_slices) {
- uint8_t *dst[MP_MAX_PLANES] = {NULL};
- int dst_stride[MP_MAX_PLANES] = {0};
- dst_stride[0] = vf->priv->stride;
- dst[0] = vf->priv->buffer;
- sws_scale(vf->priv->ctx, src, stride, y, h, dst, dst_stride);
- }
- vf_next_draw_slice(vf,src,stride,w,h,x,y);
- }
- static void get_image(struct vf_instance *vf, mp_image_t *mpi)
- {
- // FIXME: should vf.c really call get_image when using slices??
- if (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK)
- return;
- vf->dmpi= vf_get_image(vf->next, mpi->imgfmt,
- mpi->type, mpi->flags/* | MP_IMGFLAG_READABLE*/, mpi->width, mpi->height);
- mpi->planes[0]=vf->dmpi->planes[0];
- mpi->stride[0]=vf->dmpi->stride[0];
- if(mpi->flags&MP_IMGFLAG_PLANAR){
- mpi->planes[1]=vf->dmpi->planes[1];
- mpi->planes[2]=vf->dmpi->planes[2];
- mpi->stride[1]=vf->dmpi->stride[1];
- mpi->stride[2]=vf->dmpi->stride[2];
- }
- mpi->width=vf->dmpi->width;
- mpi->flags|=MP_IMGFLAG_DIRECT;
- mpi->priv=(void*)vf->dmpi;
- }
- static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
- {
- mp_image_t *dmpi = (mp_image_t *)mpi->priv;
- if (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK)
- dmpi = vf->dmpi;
- else
- if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
- dmpi=vf_get_image(vf->next,mpi->imgfmt,
- MP_IMGTYPE_EXPORT, 0,
- mpi->width, mpi->height);
- vf_clone_mpi_attributes(dmpi, mpi);
- dmpi->planes[0]=mpi->planes[0];
- dmpi->planes[1]=mpi->planes[1];
- dmpi->planes[2]=mpi->planes[2];
- dmpi->stride[0]=mpi->stride[0];
- dmpi->stride[1]=mpi->stride[1];
- dmpi->stride[2]=mpi->stride[2];
- dmpi->width=mpi->width;
- dmpi->height=mpi->height;
- }
- if(vf->priv->shot) {
- if (vf->priv->shot==1)
- vf->priv->shot=0;
- gen_fname(vf->priv);
- if (vf->priv->fname[0]) {
- if (!vf->priv->store_slices)
- scale_image(vf->priv, dmpi);
- write_png(vf->priv);
- }
- vf->priv->store_slices = 0;
- }
- return vf_next_put_image(vf, dmpi, pts);
- }
- static int control (vf_instance_t *vf, int request, void *data)
- {
- /** data contains an integer argument
- * 0: take screenshot with the next frame
- * 1: take screenshots with each frame until the same command is given once again
- **/
- if(request==VFCTRL_SCREENSHOT) {
- if (data && *(int*)data) { // repeated screenshot mode
- if (vf->priv->shot==2)
- vf->priv->shot=0;
- else
- vf->priv->shot=2;
- } else { // single screenshot
- if (!vf->priv->shot)
- vf->priv->shot=1;
- }
- return CONTROL_TRUE;
- }
- return vf_next_control (vf, request, data);
- }
- //===========================================================================//
- static int query_format(struct vf_instance *vf, unsigned int fmt)
- {
- switch(fmt){
- case IMGFMT_YV12:
- case IMGFMT_I420:
- case IMGFMT_IYUV:
- case IMGFMT_UYVY:
- case IMGFMT_YUY2:
- case IMGFMT_BGR32:
- case IMGFMT_BGR24:
- case IMGFMT_BGR16:
- case IMGFMT_BGR15:
- case IMGFMT_BGR12:
- case IMGFMT_RGB32:
- case IMGFMT_RGB24:
- case IMGFMT_Y800:
- case IMGFMT_Y8:
- case IMGFMT_YVU9:
- case IMGFMT_IF09:
- case IMGFMT_444P:
- case IMGFMT_422P:
- case IMGFMT_411P:
- return vf_next_query_format(vf, fmt);
- }
- return 0;
- }
- static void uninit(vf_instance_t *vf)
- {
- avcodec_close(vf->priv->avctx);
- av_freep(&vf->priv->avctx);
- if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
- av_free(vf->priv->buffer);
- free(vf->priv->outbuffer);
- free(vf->priv);
- }
- static int vf_open(vf_instance_t *vf, char *args)
- {
- vf->config=config;
- vf->control=control;
- vf->put_image=put_image;
- vf->query_format=query_format;
- vf->start_slice=start_slice;
- vf->draw_slice=draw_slice;
- vf->get_image=get_image;
- vf->uninit=uninit;
- vf->priv=malloc(sizeof(struct vf_priv_s));
- vf->priv->frameno=0;
- vf->priv->shot=0;
- vf->priv->store_slices=0;
- vf->priv->buffer=0;
- vf->priv->outbuffer=0;
- vf->priv->ctx=0;
- vf->priv->avctx = avcodec_alloc_context();
- avcodec_register_all();
- if (avcodec_open(vf->priv->avctx, avcodec_find_encoder(CODEC_ID_PNG))) {
- mp_msg(MSGT_VFILTER, MSGL_FATAL, "Could not open libavcodec PNG encoder\n");
- return 0;
- }
- return 1;
- }
- const vf_info_t vf_info_screenshot = {
- "screenshot to file",
- "screenshot",
- "A'rpi, Jindrich Makovicka",
- "",
- vf_open,
- NULL
- };
- //===========================================================================//
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