mpv/osdep/subprocess.c

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/*
* This file is part of mpv.
*
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv 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
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* GNU Lesser General Public License for more details.
*
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <pthread.h>
#include "config.h"
#include "common/common.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "subprocess.h"
void mp_devnull(void *ctx, char *data, size_t size)
{
}
#if HAVE_POSIX
int mp_subprocess(char **args, struct mp_cancel *cancel, void *ctx,
subprocess_read_cb on_stdout, subprocess_read_cb on_stderr,
char **error)
{
struct mp_subprocess_opts opts = {
.exe = args[0],
.args = args,
.cancel = cancel,
};
opts.fds[opts.num_fds++] = (struct mp_subprocess_fd){
.fd = 0, // stdin
.src_fd = 0,
};
opts.fds[opts.num_fds++] = (struct mp_subprocess_fd){
.fd = 1, // stdout
.on_read = on_stdout,
.on_read_ctx = ctx,
.src_fd = on_stdout ? -1 : 1,
};
opts.fds[opts.num_fds++] = (struct mp_subprocess_fd){
.fd = 2, // stderr
.on_read = on_stderr,
.on_read_ctx = ctx,
.src_fd = on_stderr ? -1 : 2,
};
struct mp_subprocess_result res;
mp_subprocess2(&opts, &res);
if (res.error < 0) {
*error = (char *)mp_subprocess_err_str(res.error);
return res.error;
}
return res.exit_status;
}
void mp_subprocess_detached(struct mp_log *log, char **args)
{
mp_msg_flush_status_line(log);
struct mp_subprocess_opts opts = {
.exe = args[0],
.args = args,
.fds = {
{.fd = 0, .src_fd = 0,},
{.fd = 1, .src_fd = 1,},
{.fd = 2, .src_fd = 2,},
},
.num_fds = 3,
.detach = true,
};
struct mp_subprocess_result res;
mp_subprocess2(&opts, &res);
if (res.error < 0) {
mp_err(log, "Starting subprocess failed: %s\n",
mp_subprocess_err_str(res.error));
}
}
#else
struct subprocess_args {
struct mp_log *log;
char **args;
};
static void *run_subprocess(void *ptr)
{
struct subprocess_args *p = ptr;
pthread_detach(pthread_self());
mp_msg_flush_status_line(p->log);
char *err = NULL;
if (mp_subprocess(p->args, NULL, NULL, NULL, NULL, &err) < 0)
mp_err(p->log, "Running subprocess failed: %s\n", err);
talloc_free(p);
return NULL;
}
void mp_subprocess_detached(struct mp_log *log, char **args)
{
struct subprocess_args *p = talloc_zero(NULL, struct subprocess_args);
p->log = mp_log_new(p, log, NULL);
int num_args = 0;
for (int n = 0; args[n]; n++)
MP_TARRAY_APPEND(p, p->args, num_args, talloc_strdup(p, args[n]));
MP_TARRAY_APPEND(p, p->args, num_args, NULL);
pthread_t thread;
if (pthread_create(&thread, NULL, run_subprocess, p))
talloc_free(p);
}
void mp_subprocess2(struct mp_subprocess_opts *opts,
struct mp_subprocess_result *res)
{
*res = (struct mp_subprocess_result){.error = MP_SUBPROCESS_EUNSUPPORTED};
}
#endif
const char *mp_subprocess_err_str(int num)
{
// Note: these are visible to the public client API
switch (num) {
case MP_SUBPROCESS_OK: return "success";
case MP_SUBPROCESS_EKILLED_BY_US: return "killed";
case MP_SUBPROCESS_EINIT: return "init";
case MP_SUBPROCESS_EUNSUPPORTED: return "unsupported";
case MP_SUBPROCESS_EGENERIC: // fall through
default: return "unknown";
}
}