mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 06:42:03 +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.
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_MPCOMMON_H
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#define MPLAYER_MPCOMMON_H
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "osdep/compiler.h"
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#include "talloc.h"
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// double should be able to represent this exactly
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#define MP_NOPTS_VALUE (-0x1p+63)
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#define MP_CONCAT_(a, b) a ## b
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#define MP_CONCAT(a, b) MP_CONCAT_(a, b)
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#define ROUND(x) ((int)((x) < 0 ? (x) - 0.5 : (x) + 0.5))
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#define MPMAX(a, b) ((a) > (b) ? (a) : (b))
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#define MPMIN(a, b) ((a) > (b) ? (b) : (a))
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#define MPCLAMP(a, min, max) (((a) < (min)) ? (min) : (((a) > (max)) ? (max) : (a)))
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#define MPSWAP(type, a, b) \
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do { type SWAP_tmp = b; b = a; a = SWAP_tmp; } while (0)
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#define MP_ARRAY_SIZE(s) (sizeof(s) / sizeof((s)[0]))
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// align must be a power of two (align >= 1), x >= 0
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#define MP_ALIGN_UP(x, align) (((x) + (align) - 1) & ~((align) - 1))
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#define MP_ALIGN_DOWN(x, align) ((x) & ~((align) - 1))
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#define CONTROL_OK 1
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#define CONTROL_TRUE 1
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#define CONTROL_FALSE 0
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#define CONTROL_UNKNOWN -1
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#define CONTROL_ERROR -2
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#define CONTROL_NA -3
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enum stream_type {
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STREAM_VIDEO,
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STREAM_AUDIO,
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STREAM_SUB,
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STREAM_TYPE_COUNT,
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};
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extern const char *const mpv_version;
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extern const char *const mpv_builddate;
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char *mp_format_time(double time, bool fractions);
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char *mp_format_time_fmt(const char *fmt, double time);
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struct mp_rect {
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int x0, y0;
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int x1, y1;
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};
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#define mp_rect_w(r) ((r).x1 - (r).x0)
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#define mp_rect_h(r) ((r).y1 - (r).y0)
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void mp_rect_union(struct mp_rect *rc, const struct mp_rect *src);
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bool mp_rect_intersection(struct mp_rect *rc, const struct mp_rect *rc2);
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int mp_snprintf_cat(char *str, size_t size, const char *format, ...)
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PRINTF_ATTRIBUTE(3, 4);
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struct bstr;
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void mp_append_utf8_bstr(void *talloc_ctx, struct bstr *buf, uint32_t codepoint);
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bool mp_append_escaped_string_noalloc(void *talloc_ctx, struct bstr *dst,
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struct bstr *src);
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bool mp_append_escaped_string(void *talloc_ctx, struct bstr *dst,
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struct bstr *src);
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char *mp_strerror_buf(char *buf, size_t buf_size, int errnum);
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#define mp_strerror(e) mp_strerror_buf((char[80]){0}, 80, e)
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#endif /* MPLAYER_MPCOMMON_H */
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