mpv/libmpcodecs/vf_screenshot.c

221 lines
6.6 KiB
C

/*
* 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>
#include <string.h>
#include <inttypes.h>
#include "mp_msg.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "vf_scale.h"
#include "fmt-conversion.h"
#include "libvo/fastmemcpy.h"
#include <libswscale/swscale.h>
struct vf_priv_s {
mp_image_t *image;
void (*image_callback)(void *, mp_image_t *);
void *image_callback_ctx;
int shot, store_slices;
};
//===========================================================================//
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt)
{
free_mp_image(vf->priv->image);
vf->priv->image = new_mp_image(width, height);
mp_image_setfmt(vf->priv->image, outfmt);
vf->priv->image->w = d_width;
vf->priv->image->h = d_height;
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
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->image->flags & MP_IMGFLAG_ALLOCATED))
mp_image_alloc_planes(vf->priv->image);
}
}
static void memcpy_pic_slice(unsigned char *dst, unsigned char *src,
int bytesPerLine, int y, int h,
int dstStride, int srcStride)
{
memcpy_pic(dst + h * dstStride, src + h * srcStride, bytesPerLine,
h, dstStride, srcStride);
}
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) {
mp_image_t *dst = vf->priv->image;
int bp = (dst->bpp + 7) / 8;
if (dst->flags & MP_IMGFLAG_PLANAR) {
int bytes_per_line[3] = { w * bp, dst->chroma_width, dst->chroma_width };
for (int n = 0; n < 3; n++) {
memcpy_pic_slice(dst->planes[n], src[n], bytes_per_line[n],
y, h, dst->stride[n], stride[n]);
}
} else {
memcpy_pic_slice(dst->planes[0], src[0], dst->w*bp, y, dst->h,
dst->stride[0], stride[0]);
}
}
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);
for (int i = 0; i < MP_MAX_PLANES; i++) {
mpi->planes[i]=vf->dmpi->planes[i];
mpi->stride[i]=vf->dmpi->stride[i];
}
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);
for (int i = 0; i < MP_MAX_PLANES; i++) {
dmpi->planes[i]=mpi->planes[i];
dmpi->stride[i]=mpi->stride[i];
}
dmpi->width=mpi->width;
dmpi->height=mpi->height;
}
if(vf->priv->shot) {
vf->priv->shot=0;
mp_image_t image;
if (!vf->priv->store_slices)
image = *dmpi;
else
image = *vf->priv->image;
image.w = vf->priv->image->w;
image.h = vf->priv->image->h;
vf->priv->image_callback(vf->priv->image_callback_ctx, &image);
vf->priv->store_slices = 0;
}
return vf_next_put_image(vf, dmpi, pts);
}
static int control (vf_instance_t *vf, int request, void *data)
{
if(request==VFCTRL_SCREENSHOT) {
struct vf_ctrl_screenshot *cmd = (struct vf_ctrl_screenshot *)data;
vf->priv->image_callback = cmd->image_callback;
vf->priv->image_callback_ctx = cmd->image_callback_ctx;
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)
{
enum PixelFormat av_format = imgfmt2pixfmt(fmt);
if (av_format != PIX_FMT_NONE && sws_isSupportedInput(av_format))
return vf_next_query_format(vf, fmt);
return 0;
}
static void uninit(vf_instance_t *vf)
{
free_mp_image(vf->priv->image);
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->shot=0;
vf->priv->store_slices=0;
vf->priv->image=NULL;
return 1;
}
const vf_info_t vf_info_screenshot = {
"screenshot to file",
"screenshot",
"A'rpi, Jindrich Makovicka",
"",
vf_open,
NULL
};
// screenshot.c will look for a filter named "screenshot_force", and not use
// the VO based screenshot code if it's in the filter chain.
const vf_info_t vf_info_screenshot_force = {
"screenshot to file (override VO based screenshot code)",
"screenshot_force",
"A'rpi, Jindrich Makovicka",
"",
vf_open,
NULL
};
//===========================================================================//