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Diffstat (limited to 'libavfilter/libmpcodecs/vf_screenshot.c')
-rw-r--r--libavfilter/libmpcodecs/vf_screenshot.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/libavfilter/libmpcodecs/vf_screenshot.c b/libavfilter/libmpcodecs/vf_screenshot.c
new file mode 100644
index 0000000000..82b345b446
--- /dev/null
+++ b/libavfilter/libmpcodecs/vf_screenshot.c
@@ -0,0 +1,322 @@
+/*
+ * 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
+};
+
+//===========================================================================//
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 11:52:38 +0000