mirror of https://github.com/mpv-player/mpv
237 lines
5.5 KiB
C
237 lines
5.5 KiB
C
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#include "../config.h"
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#ifdef HAVE_PNG
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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 <inttypes.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <png.h>
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#include "../mp_msg.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 "vf_scale.h"
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#include "../libvo/fastmemcpy.h"
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#include "../postproc/swscale.h"
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#include "../postproc/rgb2rgb.h"
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struct vf_priv_s {
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int frameno;
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int shot;
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int dw, dh;
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uint8_t *buffer;
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struct SwsContext *ctx;
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mp_image_t *dmpi;
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};
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//===========================================================================//
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static int config(struct vf_instance_s* 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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{
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int int_sws_flags=0;
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SwsFilter *srcFilter, *dstFilter;
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sws_getFlagsAndFilterFromCmdLine(&int_sws_flags, &srcFilter, &dstFilter);
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vf->priv->ctx=sws_getContext(width, height, outfmt,
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d_width, d_height, IMGFMT_BGR24,
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int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, NULL);
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vf->priv->dw = d_width;
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vf->priv->dh = d_height;
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if (vf->priv->buffer) free(vf->priv->buffer); // probably reconfigured
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vf->priv->dmpi = NULL;
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
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}
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static int write_png(char *fname, unsigned char *buffer, int width, int height, int stride)
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{
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FILE * fp;
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png_structp png_ptr;
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png_infop info_ptr;
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png_byte **row_pointers;
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int k;
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png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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info_ptr = png_create_info_struct(png_ptr);
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fp = NULL;
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if (setjmp(png_ptr->jmpbuf)) {
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png_destroy_write_struct(&png_ptr, &info_ptr);
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fclose(fp);
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return 0;
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}
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fp = fopen (fname, "wb");
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if (fp == NULL) {
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mp_msg(MSGT_VFILTER,MSGL_ERR,"\nPNG Error opening %s for writing!\n", fname);
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return 0;
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}
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png_init_io(png_ptr, fp);
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png_set_compression_level(png_ptr, 0);
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png_set_IHDR(png_ptr, info_ptr, width, height,
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8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
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PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
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png_write_info(png_ptr, info_ptr);
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png_set_bgr(png_ptr);
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row_pointers = (png_byte**)malloc(height*sizeof(png_byte*));
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for ( k = 0; k <height; k++ ){
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unsigned char* s=buffer + stride*k;
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row_pointers[k] = s;
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}
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png_write_image(png_ptr, row_pointers);
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png_write_end(png_ptr, info_ptr);
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png_destroy_write_struct(&png_ptr, &info_ptr);
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free(row_pointers);
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fclose (fp);
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}
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static int fexists(char *fname)
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{
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struct stat dummy;
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if (stat(fname, &dummy) == 0) return 1;
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else return 0;
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}
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static void shot(struct vf_priv_s* priv)
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{
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char fname[102];
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uint8_t *dst[3];
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int dst_stride[3];
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priv->shot=0;
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do {
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snprintf (fname, 100, "shot%04d.png", ++priv->frameno);
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} while (fexists(fname) && priv->frameno < 100000);
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if (fexists(fname)) return;
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mp_msg(MSGT_VFILTER,MSGL_INFO,"*** screenshot '%s' ***\n",fname);
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dst_stride[0] = (3*priv->dw+15)&~15;
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dst_stride[1] = dst_stride[2] = 0;
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if (!priv->buffer)
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priv->buffer = (uint8_t*)memalign(16, dst_stride[0]*priv->dh);
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dst[0] = priv->buffer;
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dst[1] = dst[2] = 0;
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sws_scale_ordered(priv->ctx, priv->dmpi->planes, priv->dmpi->stride, 0, priv->dmpi->height, dst, dst_stride);
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write_png(fname, priv->buffer, priv->dw, priv->dh, dst_stride[0]);
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
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{
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vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
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MP_IMGTYPE_EXPORT, 0,
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mpi->w, mpi->h);
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vf->priv->dmpi->planes[0]=mpi->planes[0];
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vf->priv->dmpi->planes[1]=mpi->planes[1];
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vf->priv->dmpi->planes[2]=mpi->planes[2];
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vf->priv->dmpi->stride[0]=mpi->stride[0];
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vf->priv->dmpi->stride[1]=mpi->stride[1];
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vf->priv->dmpi->stride[2]=mpi->stride[2];
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vf->priv->dmpi->width=mpi->width;
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vf->priv->dmpi->height=mpi->height;
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if(vf->priv->shot) {
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shot(vf->priv);
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}
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return vf_next_put_image(vf, vf->priv->dmpi);
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}
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int control (vf_instance_t *vf, int request, void *data)
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{
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if(request==VFCTRL_SCREENSHOT) {
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vf->priv->shot=1;
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return CONTROL_TRUE;
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}
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return vf_next_control (vf, request, data);
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}
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//===========================================================================//
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static int query_format(struct vf_instance_s* vf, unsigned int fmt)
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{
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switch(fmt){
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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case IMGFMT_UYVY:
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case IMGFMT_YUY2:
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case IMGFMT_BGR32:
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case IMGFMT_BGR24:
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case IMGFMT_BGR16:
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case IMGFMT_BGR15:
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case IMGFMT_RGB32:
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case IMGFMT_RGB24:
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case IMGFMT_Y800:
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case IMGFMT_Y8:
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case IMGFMT_YVU9:
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case IMGFMT_IF09:
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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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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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static int open(vf_instance_t *vf, char* args)
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{
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vf->config=config;
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vf->control=control;
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vf->put_image=put_image;
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vf->query_format=query_format;
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vf->priv=malloc(sizeof(struct vf_priv_s));
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vf->priv->frameno=0;
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vf->priv->shot=0;
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vf->priv->buffer=0;
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vf->priv->ctx=0;
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return 1;
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}
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static void uninit(vf_instance_t *vf)
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{
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if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
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if (vf->priv->buffer) free(vf->priv->buffer);
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free(vf->priv);
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}
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vf_info_t vf_info_screenshot = {
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"screenshot to file",
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"screenshot",
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"A'rpi, Jindrich Makovicka",
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"",
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open,
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NULL
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};
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//===========================================================================//
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#endif /* HAVE_PNG */
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