mirror of https://github.com/mpv-player/mpv
196 lines
6.3 KiB
C
196 lines
6.3 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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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 <assert.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 "config.h"
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#if HAVE_POSIX || defined(__MINGW32__)
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#include <strings.h>
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#include <unistd.h>
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#endif
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#include "osdep/compiler.h"
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#include "mpv_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 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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#define MP_DIV_UP(x, y) (((x) + (y) - 1) / (y))
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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 MP_IS_ALIGNED(x, align) (!((x) & ((align) - 1)))
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#define MP_IS_POWER_OF_2(x) ((x) > 0 && !((x) & ((x) - 1)))
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// align to non power of two
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#define MP_ALIGN_NPOT(x, align) ((align) ? MP_DIV_UP(x, align) * (align) : (x))
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// Return "a", or if that is NOPTS, return "def".
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#define MP_PTS_OR_DEF(a, def) ((a) == MP_NOPTS_VALUE ? (def) : (a))
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// If one of the values is NOPTS, always pick the other one.
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#define MP_PTS_MIN(a, b) MPMIN(MP_PTS_OR_DEF(a, b), MP_PTS_OR_DEF(b, a))
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#define MP_PTS_MAX(a, b) MPMAX(MP_PTS_OR_DEF(a, b), MP_PTS_OR_DEF(b, a))
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// Return a+b, unless a is NOPTS. b must not be NOPTS.
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#define MP_ADD_PTS(a, b) ((a) == MP_NOPTS_VALUE ? (a) : ((a) + (b)))
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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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enum video_sync {
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VS_DEFAULT = 0,
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VS_DISP_RESAMPLE,
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VS_DISP_RESAMPLE_VDROP,
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VS_DISP_RESAMPLE_NONE,
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VS_DISP_TEMPO,
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VS_DISP_ADROP,
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VS_DISP_VDROP,
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VS_DISP_NONE,
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VS_NONE,
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};
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#define VS_IS_DISP(x) ((x) == VS_DISP_RESAMPLE || \
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(x) == VS_DISP_RESAMPLE_VDROP || \
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(x) == VS_DISP_RESAMPLE_NONE || \
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(x) == VS_DISP_TEMPO || \
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(x) == VS_DISP_ADROP || \
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(x) == VS_DISP_VDROP || \
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(x) == VS_DISP_NONE)
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extern const char mpv_version[];
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extern const char mpv_builddate[];
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extern const char mpv_copyright[];
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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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// Formats a double value to a string with the specified precision.
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// Trailing zeros (and the dot) can be trimmed.
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// Optionally, a plus sign and a percent sign can be added.
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char *mp_format_double(void *talloc_ctx, double val, int precision,
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bool plus_sign, bool percent_sign, bool trim);
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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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bool mp_rect_contains(struct mp_rect *rc, int x, int y);
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bool mp_rect_equals(const struct mp_rect *rc1, const struct mp_rect *rc2);
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int mp_rect_subtract(const struct mp_rect *rc1, const struct mp_rect *rc2,
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struct mp_rect res_array[4]);
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void mp_rect_rotate(struct mp_rect *rc, int w, int h, int rotation);
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unsigned int mp_log2(uint32_t v);
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uint32_t mp_round_next_power_of_2(uint32_t v);
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int mp_lcm(int x, int y);
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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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char *mp_tag_str_buf(char *buf, size_t buf_size, uint32_t tag);
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#define mp_tag_str(t) mp_tag_str_buf((char[22]){0}, 22, t)
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// Return a printf(format, ...) formatted string of the given SIZE. SIZE must
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// be a compile time constant. The result is allocated on the stack and valid
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// only within the current block scope.
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#define mp_tprintf(SIZE, format, ...) \
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mp_tprintf_buf((char[SIZE]){0}, (SIZE), (format), __VA_ARGS__)
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char *mp_tprintf_buf(char *buf, size_t buf_size, const char *format, ...)
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PRINTF_ATTRIBUTE(3, 4);
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char **mp_dup_str_array(void *tctx, char **s);
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// We generally do not handle allocation failure of small malloc()s. This would
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// create a large number of rarely tested code paths, which would probably
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// regress and cause security issues. We prefer to fail fast.
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// This macro generally behaves like an assert(), except it will make sure to
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// kill the process even with NDEBUG.
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#define MP_HANDLE_OOM(x) do { \
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assert(x); \
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if (!(x)) \
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abort(); \
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} while (0)
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#ifdef _MSC_VER
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#define strncasecmp _strnicmp
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#define strcasecmp _stricmp
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#ifndef STDIN_FILENO
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#define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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#define STDOUT_FILENO 1
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#endif
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#ifndef STDERR_FILENO
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#define STDERR_FILENO 2
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#endif
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#ifndef O_NONBLOCK
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#define O_NONBLOCK 0
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#endif
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typedef long long ssize_t;
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typedef unsigned short mode_t;
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#endif
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#endif /* MPLAYER_MPCOMMON_H */
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