diff --git a/osdep/win32/include/pthread.h b/osdep/win32/include/pthread.h
deleted file mode 100644
index 71dc8084a4..0000000000
--- a/osdep/win32/include/pthread.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* Copyright (C) 2017 the mpv developers
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef MP_WRAP_PTHREAD_H_
-#define MP_WRAP_PTHREAD_H_
-
-// this is MinGW specific and sort of a hack but we really need to prevent
-// system pthread headers from being included, which can happen through <time.h>
-// and <unistd.h>:
-#define WIN_PTHREADS_TIME_H
-#define WIN_PTHREADS_UNISTD_H
-
-#include <windows.h>
-
-#include <sys/types.h>
-
-#define _POSIX_TIMERS 200809L
-
-// Note: all pthread functions are mangled to make static linking easier.
-#define pthread_once m_pthread_once
-#define pthread_mutex_destroy m_pthread_mutex_destroy
-#define pthread_mutex_init m_pthread_mutex_init
-#define pthread_mutex_lock m_pthread_mutex_lock
-#define pthread_mutex_trylock m_pthread_mutex_trylock
-#define pthread_mutex_unlock m_pthread_mutex_unlock
-#define pthread_cond_timedwait m_pthread_cond_timedwait
-#define pthread_cond_wait m_pthread_cond_wait
-#define pthread_exit m_pthread_exit
-#define pthread_join m_pthread_join
-#define pthread_detach m_pthread_detach
-#define pthread_create m_pthread_create
-#define pthread_set_name_np m_pthread_set_name_np
-#define clock_gettime m_clock_gettime
-
-#define pthread_once_t INIT_ONCE
-#define PTHREAD_ONCE_INIT INIT_ONCE_STATIC_INIT
-
-int pthread_once(pthread_once_t *once_control, void (*init_routine)(void));
-
-typedef struct {
-    char use_cs;
-    union {
-        SRWLOCK srw;
-        CRITICAL_SECTION cs;
-    } lock;
-} pthread_mutex_t;
-
-// Assume SRWLOCK_INIT is {0} so we can easily remain C89-compatible.
-#define PTHREAD_MUTEX_INITIALIZER {0}
-
-#define pthread_mutexattr_t int
-#define pthread_mutexattr_destroy(attr) (void)0
-#define pthread_mutexattr_init(attr) (*(attr) = 0)
-#define pthread_mutexattr_settype(attr, type) (*(attr) = (type))
-#define PTHREAD_MUTEX_RECURSIVE 1
-#define PTHREAD_MUTEX_ERRORCHECK 2 // unsupported
-
-int pthread_mutex_destroy(pthread_mutex_t *mutex);
-int pthread_mutex_init(pthread_mutex_t *restrict mutex,
-                       const pthread_mutexattr_t *restrict attr);
-
-int pthread_mutex_lock(pthread_mutex_t *mutex);
-int pthread_mutex_trylock(pthread_mutex_t *mutex);
-int pthread_mutex_unlock(pthread_mutex_t *mutex);
-
-#define pthread_cond_t CONDITION_VARIABLE
-#define pthread_condattr_t int
-
-#define PTHREAD_COND_INITIALIZER CONDITION_VARIABLE_INIT
-
-#define pthread_cond_init(cond, attr) InitializeConditionVariable(cond)
-#define pthread_cond_destroy(c) (void)0
-#define pthread_cond_broadcast(cond) WakeAllConditionVariable(cond)
-#define pthread_cond_signal(cond) WakeConditionVariable(cond)
-
-#define clockid_t int
-#define CLOCK_REALTIME 1
-
-int clock_gettime(clockid_t clockid, struct timespec *tp);
-
-int pthread_cond_timedwait(pthread_cond_t *restrict cond,
-                           pthread_mutex_t *restrict mutex,
-                           const struct timespec *restrict abstime);
-int pthread_cond_wait(pthread_cond_t *restrict cond,
-                      pthread_mutex_t *restrict mutex);
-
-#define pthread_t DWORD
-
-#define pthread_equal(a, b) ((a) == (b))
-#define pthread_self() (GetCurrentThreadId())
-
-void pthread_exit(void *retval);
-int pthread_join(pthread_t thread, void **retval);
-int pthread_detach(pthread_t thread);
-
-#define pthread_attr_t int
-
-int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
-                   void *(*start_routine) (void *), void *arg);
-
-void pthread_set_name_np(pthread_t thread, const char *name);
-
-#endif
diff --git a/osdep/win32/include/semaphore.h b/osdep/win32/include/semaphore.h
deleted file mode 100644
index eaa043254b..0000000000
--- a/osdep/win32/include/semaphore.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/* Copyright (C) 2017 the mpv developers
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef MP_WRAP_SEMAPHORE_H_
-#define MP_WRAP_SEMAPHORE_H_
-
-#include "osdep/threads.h"
-
-// See pthread.h for rationale.
-#define sem_init m_sem_init
-#define sem_destroy m_sem_destroy
-#define sem_wait m_sem_wait
-#define sem_trywait m_sem_trywait
-#define sem_timedwait m_sem_timedwait
-#define sem_post m_sem_post
-
-#define SEM_VALUE_MAX 100
-
-typedef struct {
-    mp_mutex lock;
-    mp_cond wakeup;
-    unsigned int value;
-} sem_t;
-
-int sem_init(sem_t *sem, int pshared, unsigned int value);
-int sem_destroy(sem_t *sem);
-int sem_wait(sem_t *sem);
-int sem_trywait(sem_t *sem);
-int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout);
-int sem_post(sem_t *sem);
-
-#endif
diff --git a/osdep/win32/pthread.c b/osdep/win32/pthread.c
deleted file mode 100644
index d25a3da693..0000000000
--- a/osdep/win32/pthread.c
+++ /dev/null
@@ -1,370 +0,0 @@
-/* Copyright (C) 2017 the mpv developers
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <pthread.h>
-#include <semaphore.h>
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <errno.h>
-#include <sys/time.h>
-#include <assert.h>
-#include <windows.h>
-
-#include "osdep/timer.h"  // mp_{start,end}_hires_timers
-
-int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
-{
-    BOOL pending;
-    if (!InitOnceBeginInitialize(once_control, 0, &pending, NULL))
-        abort();
-    if (pending) {
-        init_routine();
-        InitOnceComplete(once_control, 0, NULL);
-    }
-    return 0;
-}
-
-int pthread_mutex_destroy(pthread_mutex_t *mutex)
-{
-    if (mutex->use_cs)
-        DeleteCriticalSection(&mutex->lock.cs);
-    return 0;
-}
-
-int pthread_mutex_init(pthread_mutex_t *restrict mutex,
-                       const pthread_mutexattr_t *restrict attr)
-{
-    mutex->use_cs = attr && (*attr & PTHREAD_MUTEX_RECURSIVE);
-    if (mutex->use_cs) {
-        InitializeCriticalSection(&mutex->lock.cs);
-    } else {
-        InitializeSRWLock(&mutex->lock.srw);
-    }
-    return 0;
-}
-
-int pthread_mutex_lock(pthread_mutex_t *mutex)
-{
-    if (mutex->use_cs) {
-        EnterCriticalSection(&mutex->lock.cs);
-    } else {
-        AcquireSRWLockExclusive(&mutex->lock.srw);
-    }
-    return 0;
-}
-
-int pthread_mutex_trylock(pthread_mutex_t *mutex)
-{
-    if (mutex->use_cs) {
-        return !TryEnterCriticalSection(&mutex->lock.cs);
-    } else {
-        return !TryAcquireSRWLockExclusive(&mutex->lock.srw);
-    }
-}
-
-int pthread_mutex_unlock(pthread_mutex_t *mutex)
-{
-    if (mutex->use_cs) {
-        LeaveCriticalSection(&mutex->lock.cs);
-    } else {
-        ReleaseSRWLockExclusive(&mutex->lock.srw);
-    }
-    return 0;
-}
-
-int clock_gettime(clockid_t clockid, struct timespec *tp)
-{
-    if (clockid != CLOCK_REALTIME) {
-        errno = EINVAL;
-        return -1;
-    }
-    union {
-        FILETIME ft;
-        ULARGE_INTEGER i;
-    } r;
-    GetSystemTimePreciseAsFileTime(&r.ft);
-    r.i.QuadPart -= UINT64_C(116444736000000000); // MS epoch -> Unix epoch
-    tp->tv_sec = r.i.QuadPart / UINT64_C(10000000);
-    tp->tv_nsec = (r.i.QuadPart % UINT64_C(10000000)) * 100;
-    return 0;
-}
-
-static int cond_wait(pthread_cond_t *restrict cond,
-                     pthread_mutex_t *restrict mutex,
-                     DWORD ms)
-{
-    BOOL res;
-    int hrt = mp_start_hires_timers(ms);
-    if (mutex->use_cs) {
-        res = SleepConditionVariableCS(cond, &mutex->lock.cs, ms);
-    } else {
-        res = SleepConditionVariableSRW(cond, &mutex->lock.srw, ms, 0);
-    }
-    mp_end_hires_timers(hrt);
-    return res ? 0 : ETIMEDOUT;
-}
-
-int pthread_cond_timedwait(pthread_cond_t *restrict cond,
-                           pthread_mutex_t *restrict mutex,
-                           const struct timespec *restrict abstime)
-{
-    struct timespec ts;
-    clock_gettime(CLOCK_REALTIME, &ts);
-    DWORD timeout_ms = 0;
-    if (abstime->tv_sec >= INT64_MAX / 1000) { // overflow
-        timeout_ms = INFINITE;
-    } else if (abstime->tv_sec >= ts.tv_sec) {
-        int64_t msec = (abstime->tv_sec - ts.tv_sec) * INT64_C(1000) +
-            (abstime->tv_nsec - ts.tv_nsec) / INT64_C(1000000);
-        if (msec > ULONG_MAX) {
-            timeout_ms = INFINITE;
-        } else if (msec > 0) {
-            timeout_ms = msec;
-        }
-    }
-    return cond_wait(cond, mutex, timeout_ms);
-}
-
-int pthread_cond_wait(pthread_cond_t *restrict cond,
-                      pthread_mutex_t *restrict mutex)
-{
-    return cond_wait(cond, mutex, INFINITE);
-}
-
-static pthread_mutex_t pthread_table_lock = PTHREAD_MUTEX_INITIALIZER;
-static struct m_thread_info *pthread_table;
-size_t pthread_table_num;
-
-struct m_thread_info {
-    DWORD id;
-    HANDLE handle;
-    void *(*user_fn)(void *);
-    void *user_arg;
-    void *res;
-};
-
-static struct m_thread_info *find_thread_info(DWORD id)
-{
-    for (int n = 0; n < pthread_table_num; n++) {
-        if (id == pthread_table[n].id)
-            return &pthread_table[n];
-    }
-    return NULL;
-}
-
-static void remove_thread_info(struct m_thread_info *info)
-{
-    assert(pthread_table_num);
-    assert(info >= &pthread_table[0] && info < &pthread_table[pthread_table_num]);
-
-    pthread_table[info - pthread_table] = pthread_table[pthread_table_num - 1];
-    pthread_table_num -= 1;
-
-    // Avoid upsetting leak detectors.
-    if (pthread_table_num == 0) {
-        free(pthread_table);
-        pthread_table = NULL;
-    }
-}
-
-void pthread_exit(void *retval)
-{
-    pthread_mutex_lock(&pthread_table_lock);
-    struct m_thread_info *info = find_thread_info(pthread_self());
-    assert(info); // not started with pthread_create, or pthread_join() race
-    info->res = retval;
-    if (!info->handle)
-        remove_thread_info(info); // detached case
-    pthread_mutex_unlock(&pthread_table_lock);
-
-    ExitThread(0);
-}
-
-int pthread_join(pthread_t thread, void **retval)
-{
-    pthread_mutex_lock(&pthread_table_lock);
-    struct m_thread_info *info = find_thread_info(thread);
-    assert(info); // not started with pthread_create, or pthread_join() race
-    HANDLE h = info->handle;
-    assert(h); // thread was detached
-    pthread_mutex_unlock(&pthread_table_lock);
-
-    WaitForSingleObject(h, INFINITE);
-
-    pthread_mutex_lock(&pthread_table_lock);
-    info = find_thread_info(thread);
-    assert(info);
-    assert(info->handle == h);
-    CloseHandle(h);
-    if (retval)
-        *retval = info->res;
-    remove_thread_info(info);
-    pthread_mutex_unlock(&pthread_table_lock);
-
-    return 0;
-}
-
-int pthread_detach(pthread_t thread)
-{
-    if (!pthread_equal(thread, pthread_self()))
-        abort(); // restriction of this wrapper
-
-    pthread_mutex_lock(&pthread_table_lock);
-    struct m_thread_info *info = find_thread_info(thread);
-    assert(info); // not started with pthread_create
-    assert(info->handle); // already detached
-    CloseHandle(info->handle);
-    info->handle = NULL;
-    pthread_mutex_unlock(&pthread_table_lock);
-
-    return 0;
-}
-
-static DWORD WINAPI run_thread(LPVOID lpParameter)
-{
-    pthread_mutex_lock(&pthread_table_lock);
-    struct m_thread_info *pinfo = find_thread_info(pthread_self());
-    assert(pinfo);
-    struct m_thread_info info = *pinfo;
-    pthread_mutex_unlock(&pthread_table_lock);
-
-    pthread_exit(info.user_fn(info.user_arg));
-    abort(); // not reached
-}
-
-int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
-                   void *(*start_routine) (void *), void *arg)
-{
-    int res = 0;
-    pthread_mutex_lock(&pthread_table_lock);
-    void *nalloc =
-        realloc(pthread_table, (pthread_table_num + 1) * sizeof(pthread_table[0]));
-    if (!nalloc) {
-        res = EAGAIN;
-        goto done;
-    }
-    pthread_table = nalloc;
-    pthread_table_num += 1;
-    struct m_thread_info *info = &pthread_table[pthread_table_num - 1];
-    *info = (struct m_thread_info) {
-        .user_fn = start_routine,
-        .user_arg = arg,
-    };
-    info->handle = CreateThread(NULL, 0, run_thread, NULL, CREATE_SUSPENDED,
-                                &info->id);
-    if (!info->handle) {
-        remove_thread_info(info);
-        res = EAGAIN;
-        goto done;
-    }
-    *thread = info->id;
-    ResumeThread(info->handle);
-done:
-    pthread_mutex_unlock(&pthread_table_lock);
-    return res;
-}
-
-void pthread_set_name_np(pthread_t thread, const char *name)
-{
-#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && defined(_PROCESSTHREADSAPI_H_)
-    HMODULE kernel32 = GetModuleHandleW(L"kernel32.dll");
-    if (!kernel32)
-        return;
-    HRESULT (WINAPI *pSetThreadDescription)(HANDLE, PCWSTR) =
-        (void*)GetProcAddress(kernel32, "SetThreadDescription");
-    if (!pSetThreadDescription)
-        return;
-
-    HANDLE th = OpenThread(THREAD_SET_LIMITED_INFORMATION, FALSE, thread);
-    if (!th)
-        return;
-    wchar_t wname[80];
-    int wc = MultiByteToWideChar(CP_UTF8, 0, name, -1, wname,
-                                 sizeof(wname) / sizeof(wchar_t) - 1);
-    if (wc > 0) {
-        wname[wc] = L'\0';
-        pSetThreadDescription(th, wname);
-    }
-    CloseHandle(th);
-#endif
-}
-
-int sem_init(sem_t *sem, int pshared, unsigned int value)
-{
-    if (pshared)
-        abort(); // unsupported
-    pthread_mutex_init(&sem->lock, NULL);
-    pthread_cond_init(&sem->wakeup, NULL);
-    sem->value = value;
-    return 0;
-}
-
-int sem_destroy(sem_t *sem)
-{
-    pthread_mutex_destroy(&sem->lock);
-    pthread_cond_destroy(&sem->wakeup);
-    return 0;
-}
-
-int sem_wait(sem_t *sem)
-{
-    pthread_mutex_lock(&sem->lock);
-    while (!sem->value)
-        pthread_cond_wait(&sem->wakeup, &sem->lock);
-    sem->value -= 1;
-    pthread_mutex_unlock(&sem->lock);
-    return 0;
-}
-
-int sem_trywait(sem_t *sem)
-{
-    pthread_mutex_lock(&sem->lock);
-    int r;
-    if (sem->value > 0) {
-        sem->value -= 1;
-        r = 0;
-    } else {
-        errno = EAGAIN;
-        r = -1;
-    }
-    pthread_mutex_unlock(&sem->lock);
-    return r;
-}
-
-int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout)
-{
-    pthread_mutex_lock(&sem->lock);
-    while (!sem->value) {
-        int err = pthread_cond_timedwait(&sem->wakeup, &sem->lock, abs_timeout);
-        if (err) {
-            pthread_mutex_unlock(&sem->lock);
-            errno = err;
-            return -1;
-        }
-    }
-    sem->value -= 1;
-    pthread_mutex_unlock(&sem->lock);
-    return 0;
-}
-
-int sem_post(sem_t *sem)
-{
-    pthread_mutex_lock(&sem->lock);
-    sem->value += 1;
-    pthread_cond_broadcast(&sem->wakeup);
-    pthread_mutex_unlock(&sem->lock);
-    return 0;
-}