2 * This file is part of MPlayer.
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * MPlayer is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include <sys/types.h>
35 #include "img_format.h"
40 #include "libswscale/swscale.h"
41 #include "libavcodec/avcodec.h"
46 /// shot stores current screenshot mode:
47 /// 0: don't take screenshots
48 /// 1: take single screenshot, reset to 0 afterwards
49 /// 2: take screenshots of each frame
50 int shot, store_slices;
53 struct SwsContext *ctx;
54 AVCodecContext *avctx;
59 //===========================================================================//
61 static int config(struct vf_instance *vf,
62 int width, int height, int d_width, int d_height,
63 unsigned int flags, unsigned int outfmt)
65 vf->priv->ctx=sws_getContextFromCmdLine(width, height, outfmt,
66 d_width, d_height, IMGFMT_RGB24);
68 vf->priv->outbuffer_size = d_width * d_height * 3 * 2;
69 vf->priv->outbuffer = realloc(vf->priv->outbuffer, vf->priv->outbuffer_size);
70 vf->priv->avctx->width = d_width;
71 vf->priv->avctx->height = d_height;
72 vf->priv->avctx->pix_fmt = PIX_FMT_RGB24;
73 vf->priv->avctx->compression_level = 0;
74 vf->priv->dw = d_width;
75 vf->priv->dh = d_height;
76 vf->priv->stride = (3*vf->priv->dw+15)&~15;
78 free(vf->priv->buffer); // probably reconfigured
79 vf->priv->buffer = NULL;
81 return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
84 static void write_png(struct vf_priv_s *priv)
86 char *fname = priv->fname;
91 fp = fopen (fname, "wb");
93 mp_msg(MSGT_VFILTER,MSGL_ERR,"\nPNG Error opening %s for writing!\n", fname);
97 pic.data[0] = priv->buffer;
98 pic.linesize[0] = priv->stride;
99 size = avcodec_encode_video(priv->avctx, priv->outbuffer, priv->outbuffer_size, &pic);
101 fwrite(priv->outbuffer, size, 1, fp);
106 static int fexists(char *fname)
109 if (stat(fname, &dummy) == 0) return 1;
113 static void gen_fname(struct vf_priv_s* priv)
116 snprintf (priv->fname, 100, "shot%04d.png", ++priv->frameno);
117 } while (fexists(priv->fname) && priv->frameno < 100000);
118 if (fexists(priv->fname)) {
119 priv->fname[0] = '\0';
123 mp_msg(MSGT_VFILTER,MSGL_INFO,"*** screenshot '%s' ***\n",priv->fname);
127 static void scale_image(struct vf_priv_s* priv, mp_image_t *mpi)
129 uint8_t *dst[MP_MAX_PLANES] = {NULL};
130 int dst_stride[MP_MAX_PLANES] = {0};
132 dst_stride[0] = priv->stride;
134 priv->buffer = av_malloc(dst_stride[0]*priv->dh);
136 dst[0] = priv->buffer;
137 sws_scale(priv->ctx, mpi->planes, mpi->stride, 0, priv->dh, dst, dst_stride);
140 static void start_slice(struct vf_instance *vf, mp_image_t *mpi)
142 vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
143 mpi->type, mpi->flags, mpi->width, mpi->height);
144 if (vf->priv->shot) {
145 vf->priv->store_slices = 1;
146 if (!vf->priv->buffer)
147 vf->priv->buffer = av_malloc(vf->priv->stride*vf->priv->dh);
152 static void draw_slice(struct vf_instance *vf, unsigned char** src,
153 int* stride, int w,int h, int x, int y)
155 if (vf->priv->store_slices) {
156 uint8_t *dst[MP_MAX_PLANES] = {NULL};
157 int dst_stride[MP_MAX_PLANES] = {0};
158 dst_stride[0] = vf->priv->stride;
159 dst[0] = vf->priv->buffer;
160 sws_scale(vf->priv->ctx, src, stride, y, h, dst, dst_stride);
162 vf_next_draw_slice(vf,src,stride,w,h,x,y);
165 static void get_image(struct vf_instance *vf, mp_image_t *mpi)
167 // FIXME: should vf.c really call get_image when using slices??
168 if (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK)
170 vf->dmpi= vf_get_image(vf->next, mpi->imgfmt,
171 mpi->type, mpi->flags/* | MP_IMGFLAG_READABLE*/, mpi->width, mpi->height);
173 mpi->planes[0]=vf->dmpi->planes[0];
174 mpi->stride[0]=vf->dmpi->stride[0];
175 if(mpi->flags&MP_IMGFLAG_PLANAR){
176 mpi->planes[1]=vf->dmpi->planes[1];
177 mpi->planes[2]=vf->dmpi->planes[2];
178 mpi->stride[1]=vf->dmpi->stride[1];
179 mpi->stride[2]=vf->dmpi->stride[2];
181 mpi->width=vf->dmpi->width;
183 mpi->flags|=MP_IMGFLAG_DIRECT;
185 mpi->priv=(void*)vf->dmpi;
188 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
190 mp_image_t *dmpi = (mp_image_t *)mpi->priv;
192 if (mpi->flags & MP_IMGFLAG_DRAW_CALLBACK)
195 if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
196 dmpi=vf_get_image(vf->next,mpi->imgfmt,
197 MP_IMGTYPE_EXPORT, 0,
198 mpi->width, mpi->height);
199 vf_clone_mpi_attributes(dmpi, mpi);
200 dmpi->planes[0]=mpi->planes[0];
201 dmpi->planes[1]=mpi->planes[1];
202 dmpi->planes[2]=mpi->planes[2];
203 dmpi->stride[0]=mpi->stride[0];
204 dmpi->stride[1]=mpi->stride[1];
205 dmpi->stride[2]=mpi->stride[2];
206 dmpi->width=mpi->width;
207 dmpi->height=mpi->height;
211 if (vf->priv->shot==1)
214 if (vf->priv->fname[0]) {
215 if (!vf->priv->store_slices)
216 scale_image(vf->priv, dmpi);
219 vf->priv->store_slices = 0;
222 return vf_next_put_image(vf, dmpi, pts);
225 static int control (vf_instance_t *vf, int request, void *data)
227 /** data contains an integer argument
228 * 0: take screenshot with the next frame
229 * 1: take screenshots with each frame until the same command is given once again
231 if(request==VFCTRL_SCREENSHOT) {
232 if (data && *(int*)data) { // repeated screenshot mode
233 if (vf->priv->shot==2)
237 } else { // single screenshot
243 return vf_next_control (vf, request, data);
247 //===========================================================================//
249 static int query_format(struct vf_instance *vf, unsigned int fmt)
271 return vf_next_query_format(vf, fmt);
276 static void uninit(vf_instance_t *vf)
278 avcodec_close(vf->priv->avctx);
279 av_freep(&vf->priv->avctx);
280 if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
281 av_free(vf->priv->buffer);
282 free(vf->priv->outbuffer);
286 static int vf_open(vf_instance_t *vf, char *args)
290 vf->put_image=put_image;
291 vf->query_format=query_format;
292 vf->start_slice=start_slice;
293 vf->draw_slice=draw_slice;
294 vf->get_image=get_image;
296 vf->priv=malloc(sizeof(struct vf_priv_s));
299 vf->priv->store_slices=0;
301 vf->priv->outbuffer=0;
303 vf->priv->avctx = avcodec_alloc_context();
304 avcodec_register_all();
305 if (avcodec_open(vf->priv->avctx, avcodec_find_encoder(CODEC_ID_PNG))) {
306 mp_msg(MSGT_VFILTER, MSGL_FATAL, "Could not open libavcodec PNG encoder\n");
313 const vf_info_t vf_info_screenshot = {
314 "screenshot to file",
316 "A'rpi, Jindrich Makovicka",
322 //===========================================================================//