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mpv/video/out/vo_image.c
2013-08-24 17:11:59 +02:00

179 lines
4.3 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdbool.h>
#include <sys/stat.h>
#include <libswscale/swscale.h>
#include "config.h"
#include "mpvcore/bstr.h"
#include "osdep/io.h"
#include "mpvcore/path.h"
#include "talloc.h"
#include "mpvcore/mp_msg.h"
#include "video/out/vo.h"
#include "video/csputils.h"
#include "video/vfcap.h"
#include "video/mp_image.h"
#include "video/fmt-conversion.h"
#include "video/image_writer.h"
#include "video/sws_utils.h"
#include "sub/sub.h"
#include "mpvcore/m_option.h"
struct priv {
struct image_writer_opts *opts;
char *outdir;
struct mp_image *current;
int frame;
};
static bool checked_mkdir(struct vo *vo, const char *buf)
{
MP_INFO(vo, "Creating output directory '%s'...\n", buf);
if (mkdir(buf, 0755) < 0) {
char *errstr = strerror(errno);
if (errno == EEXIST) {
struct stat stat_p;
if (mp_stat(buf, &stat_p ) == 0 && S_ISDIR(stat_p.st_mode))
return true;
}
MP_ERR(vo, "Error creating output directory: %s\n", errstr);
return false;
}
return true;
}
static int reconfig(struct vo *vo, struct mp_image_params *params, int flags)
{
struct priv *p = vo->priv;
mp_image_unrefp(&p->current);
if (p->outdir && vo->config_count < 1)
if (!checked_mkdir(vo, p->outdir))
return -1;
return 0;
}
static void draw_image(struct vo *vo, mp_image_t *mpi)
{
struct priv *p = vo->priv;
mp_image_setrefp(&p->current, mpi);
}
static void draw_osd(struct vo *vo, struct osd_state *osd)
{
struct priv *p = vo->priv;
struct aspect_data asp = vo->aspdat;
double sar = (double)asp.orgw / asp.orgh;
double dar = (double)asp.prew / asp.preh;
struct mp_osd_res dim = {
.w = asp.orgw,
.h = asp.orgh,
.display_par = sar / dar,
.video_par = dar / sar,
};
osd_draw_on_image(osd, dim, osd->vo_pts, OSD_DRAW_SUB_ONLY, p->current);
}
static void flip_page(struct vo *vo)
{
struct priv *p = vo->priv;
(p->frame)++;
void *t = talloc_new(NULL);
char *filename = talloc_asprintf(t, "%08d.%s", p->frame,
image_writer_file_ext(p->opts));
if (p->outdir && strlen(p->outdir))
filename = mp_path_join(t, bstr0(p->outdir), bstr0(filename));
MP_INFO(vo, "Saving %s\n", filename);
write_image(p->current, p->opts, filename);
talloc_free(t);
mp_image_unrefp(&p->current);
}
static int query_format(struct vo *vo, uint32_t fmt)
{
if (mp_sws_supported_format(fmt))
return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW;
return 0;
}
static void uninit(struct vo *vo)
{
struct priv *p = vo->priv;
mp_image_unrefp(&p->current);
}
static int preinit(struct vo *vo)
{
vo->untimed = true;
return 0;
}
static int control(struct vo *vo, uint32_t request, void *data)
{
switch (request) {
// prevent random frame stepping by frontend
case VOCTRL_REDRAW_FRAME:
return true;
}
return VO_NOTIMPL;
}
#define OPT_BASE_STRUCT struct priv
const struct vo_driver video_out_image =
{
.info = &(const vo_info_t) {
"Write video frames to image files",
"image",
"wm4",
""
},
.priv_size = sizeof(struct priv),
.options = (const struct m_option[]) {
OPT_SUBSTRUCT("", opts, image_writer_conf, 0),
OPT_STRING("outdir", outdir, 0),
{0},
},
.preinit = preinit,
.query_format = query_format,
.reconfig = reconfig,
.control = control,
.draw_image = draw_image,
.draw_osd = draw_osd,
.flip_page = flip_page,
.uninit = uninit,
};