mirror of
https://github.com/mpv-player/mpv
synced 2024-12-17 20:34:58 +00:00
cc54377463
...because everything is terrible. strerror() is not documented as having to be thread-safe by POSIX and C11. (Which is pretty much bullshit, because both mandate threads and some form of thread-local storage - so there's no excuse why implementation couldn't implement this in a thread-safe way. Especially with C11 this is ridiculous, because there is no way to use threads and convert error numbers to strings at the same time!) Since we heavily use threads now, we should avoid unsafe functions like strerror(). strerror_r() is in POSIX, but GNU/glibc deliberately fucks it up and gives the function different semantics than the POSIX one. It's a bit of work to convince this piece of shit to expose the POSIX standard function, and not the messed up GNU one. strerror_l() is also in POSIX, but only since the 2008 standard, and thus is not widespread. The solution is using avlibc (libavutil, by its official name), which handles the unportable details for us, mostly. We avoid some pain.
156 lines
3.8 KiB
C
156 lines
3.8 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 "misc/bstr.h"
|
|
#include "osdep/io.h"
|
|
#include "options/path.h"
|
|
#include "talloc.h"
|
|
#include "common/common.h"
|
|
#include "common/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/osd.h"
|
|
#include "options/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 = mp_strerror(errno);
|
|
if (errno == EEXIST) {
|
|
struct stat stat_p;
|
|
if (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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void draw_image(struct vo *vo, mp_image_t *mpi)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
|
|
p->current = mpi;
|
|
|
|
struct mp_osd_res dim = osd_res_from_image_params(vo->params);
|
|
osd_draw_on_image(vo->osd, dim, mpi->pts, OSD_DRAW_SUB_ONLY, p->current);
|
|
}
|
|
|
|
static void flip_page(struct vo *vo)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
if (!p->current)
|
|
return;
|
|
|
|
(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, vo->log);
|
|
|
|
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)
|
|
{
|
|
struct priv *p = vo->priv;
|
|
if (p->outdir && !checked_mkdir(vo, p->outdir))
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int control(struct vo *vo, uint32_t request, void *data)
|
|
{
|
|
return VO_NOTIMPL;
|
|
}
|
|
|
|
#define OPT_BASE_STRUCT struct priv
|
|
|
|
const struct vo_driver video_out_image =
|
|
{
|
|
.description = "Write video frames to image files",
|
|
.name = "image",
|
|
.untimed = true,
|
|
.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,
|
|
.flip_page = flip_page,
|
|
.uninit = uninit,
|
|
};
|