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-rw-r--r--media/ffvpx/compat/va_copy.h34
-rw-r--r--media/ffvpx/compat/w32pthreads.h418
2 files changed, 452 insertions, 0 deletions
diff --git a/media/ffvpx/compat/va_copy.h b/media/ffvpx/compat/va_copy.h
new file mode 100644
index 000000000..a40bbe663
--- /dev/null
+++ b/media/ffvpx/compat/va_copy.h
@@ -0,0 +1,34 @@
+/*
+ * MSVC Compatible va_copy macro
+ * Copyright (c) 2012 Derek Buitenhuis
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef COMPAT_VA_COPY_H
+#define COMPAT_VA_COPY_H
+
+#include <stdarg.h>
+
+#if !defined(va_copy) && defined(_MSC_VER)
+#define va_copy(dst, src) ((dst) = (src))
+#endif
+#if !defined(va_copy) && defined(__GNUC__) && __GNUC__ < 3
+#define va_copy(dst, src) __va_copy(dst, src)
+#endif
+
+#endif /* COMPAT_VA_COPY_H */
diff --git a/media/ffvpx/compat/w32pthreads.h b/media/ffvpx/compat/w32pthreads.h
new file mode 100644
index 000000000..4ac2a995b
--- /dev/null
+++ b/media/ffvpx/compat/w32pthreads.h
@@ -0,0 +1,418 @@
+/*
+ * Copyright (C) 2010-2011 x264 project
+ *
+ * Authors: Steven Walters <kemuri9@gmail.com>
+ * Pegasys Inc. <http://www.pegasys-inc.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * w32threads to pthreads wrapper
+ */
+
+#ifndef COMPAT_W32PTHREADS_H
+#define COMPAT_W32PTHREADS_H
+
+/* Build up a pthread-like API using underlying Windows API. Have only static
+ * methods so as to not conflict with a potentially linked in pthread-win32
+ * library.
+ * As most functions here are used without checking return values,
+ * only implement return values as necessary. */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <process.h>
+
+#if _WIN32_WINNT < 0x0600 && defined(__MINGW32__)
+#undef MemoryBarrier
+#define MemoryBarrier __sync_synchronize
+#endif
+
+#include "libavutil/attributes.h"
+#include "libavutil/common.h"
+#include "libavutil/internal.h"
+#include "libavutil/mem.h"
+
+typedef struct pthread_t {
+ void *handle;
+ void *(*func)(void* arg);
+ void *arg;
+ void *ret;
+} pthread_t;
+
+/* the conditional variable api for windows 6.0+ uses critical sections and
+ * not mutexes */
+typedef CRITICAL_SECTION pthread_mutex_t;
+
+/* This is the CONDITION_VARIABLE typedef for using Windows' native
+ * conditional variables on kernels 6.0+. */
+#if HAVE_CONDITION_VARIABLE_PTR
+typedef CONDITION_VARIABLE pthread_cond_t;
+#else
+typedef struct pthread_cond_t {
+ void *Ptr;
+} pthread_cond_t;
+#endif
+
+#if _WIN32_WINNT >= 0x0600
+#define InitializeCriticalSection(x) InitializeCriticalSectionEx(x, 0, 0)
+#define WaitForSingleObject(a, b) WaitForSingleObjectEx(a, b, FALSE)
+#endif
+
+static av_unused unsigned __stdcall attribute_align_arg win32thread_worker(void *arg)
+{
+ pthread_t *h = arg;
+ h->ret = h->func(h->arg);
+ return 0;
+}
+
+static av_unused int pthread_create(pthread_t *thread, const void *unused_attr,
+ void *(*start_routine)(void*), void *arg)
+{
+ thread->func = start_routine;
+ thread->arg = arg;
+#if HAVE_WINRT
+ thread->handle = (void*)CreateThread(NULL, 0, win32thread_worker, thread,
+ 0, NULL);
+#else
+ thread->handle = (void*)_beginthreadex(NULL, 0, win32thread_worker, thread,
+ 0, NULL);
+#endif
+ return !thread->handle;
+}
+
+static av_unused int pthread_join(pthread_t thread, void **value_ptr)
+{
+ DWORD ret = WaitForSingleObject(thread.handle, INFINITE);
+ if (ret != WAIT_OBJECT_0) {
+ if (ret == WAIT_ABANDONED)
+ return EINVAL;
+ else
+ return EDEADLK;
+ }
+ if (value_ptr)
+ *value_ptr = thread.ret;
+ CloseHandle(thread.handle);
+ return 0;
+}
+
+static inline int pthread_mutex_init(pthread_mutex_t *m, void* attr)
+{
+ InitializeCriticalSection(m);
+ return 0;
+}
+static inline int pthread_mutex_destroy(pthread_mutex_t *m)
+{
+ DeleteCriticalSection(m);
+ return 0;
+}
+static inline int pthread_mutex_lock(pthread_mutex_t *m)
+{
+ EnterCriticalSection(m);
+ return 0;
+}
+static inline int pthread_mutex_unlock(pthread_mutex_t *m)
+{
+ LeaveCriticalSection(m);
+ return 0;
+}
+
+#if _WIN32_WINNT >= 0x0600
+typedef INIT_ONCE pthread_once_t;
+#define PTHREAD_ONCE_INIT INIT_ONCE_STATIC_INIT
+
+static av_unused int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
+{
+ BOOL pending = FALSE;
+ InitOnceBeginInitialize(once_control, 0, &pending, NULL);
+ if (pending)
+ init_routine();
+ InitOnceComplete(once_control, 0, NULL);
+ return 0;
+}
+
+static inline int pthread_cond_init(pthread_cond_t *cond, const void *unused_attr)
+{
+ InitializeConditionVariable(cond);
+ return 0;
+}
+
+/* native condition variables do not destroy */
+static inline int pthread_cond_destroy(pthread_cond_t *cond)
+{
+ return 0;
+}
+
+static inline int pthread_cond_broadcast(pthread_cond_t *cond)
+{
+ WakeAllConditionVariable(cond);
+ return 0;
+}
+
+static inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+ SleepConditionVariableCS(cond, mutex, INFINITE);
+ return 0;
+}
+
+static inline int pthread_cond_signal(pthread_cond_t *cond)
+{
+ WakeConditionVariable(cond);
+ return 0;
+}
+
+#else // _WIN32_WINNT < 0x0600
+
+/* atomic init state of dynamically loaded functions */
+static LONG w32thread_init_state = 0;
+static av_unused void w32thread_init(void);
+
+/* for pre-Windows 6.0 platforms, define INIT_ONCE struct,
+ * compatible to the one used in the native API */
+
+typedef union pthread_once_t {
+ void * Ptr; ///< For the Windows 6.0+ native functions
+ LONG state; ///< For the pre-Windows 6.0 compat code
+} pthread_once_t;
+
+#define PTHREAD_ONCE_INIT {0}
+
+/* function pointers to init once API on windows 6.0+ kernels */
+static BOOL (WINAPI *initonce_begin)(pthread_once_t *lpInitOnce, DWORD dwFlags, BOOL *fPending, void **lpContext);
+static BOOL (WINAPI *initonce_complete)(pthread_once_t *lpInitOnce, DWORD dwFlags, void *lpContext);
+
+/* pre-Windows 6.0 compat using a spin-lock */
+static inline void w32thread_once_fallback(LONG volatile *state, void (*init_routine)(void))
+{
+ switch (InterlockedCompareExchange(state, 1, 0)) {
+ /* Initial run */
+ case 0:
+ init_routine();
+ InterlockedExchange(state, 2);
+ break;
+ /* Another thread is running init */
+ case 1:
+ while (1) {
+ MemoryBarrier();
+ if (*state == 2)
+ break;
+ Sleep(0);
+ }
+ break;
+ /* Initialization complete */
+ case 2:
+ break;
+ }
+}
+
+static av_unused int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
+{
+ w32thread_once_fallback(&w32thread_init_state, w32thread_init);
+
+ /* Use native functions on Windows 6.0+ */
+ if (initonce_begin && initonce_complete) {
+ BOOL pending = FALSE;
+ initonce_begin(once_control, 0, &pending, NULL);
+ if (pending)
+ init_routine();
+ initonce_complete(once_control, 0, NULL);
+ return 0;
+ }
+
+ w32thread_once_fallback(&once_control->state, init_routine);
+ return 0;
+}
+
+/* for pre-Windows 6.0 platforms we need to define and use our own condition
+ * variable and api */
+
+typedef struct win32_cond_t {
+ pthread_mutex_t mtx_broadcast;
+ pthread_mutex_t mtx_waiter_count;
+ volatile int waiter_count;
+ HANDLE semaphore;
+ HANDLE waiters_done;
+ volatile int is_broadcast;
+} win32_cond_t;
+
+/* function pointers to conditional variable API on windows 6.0+ kernels */
+static void (WINAPI *cond_broadcast)(pthread_cond_t *cond);
+static void (WINAPI *cond_init)(pthread_cond_t *cond);
+static void (WINAPI *cond_signal)(pthread_cond_t *cond);
+static BOOL (WINAPI *cond_wait)(pthread_cond_t *cond, pthread_mutex_t *mutex,
+ DWORD milliseconds);
+
+static av_unused int pthread_cond_init(pthread_cond_t *cond, const void *unused_attr)
+{
+ win32_cond_t *win32_cond = NULL;
+
+ w32thread_once_fallback(&w32thread_init_state, w32thread_init);
+
+ if (cond_init) {
+ cond_init(cond);
+ return 0;
+ }
+
+ /* non native condition variables */
+ win32_cond = av_mallocz(sizeof(win32_cond_t));
+ if (!win32_cond)
+ return ENOMEM;
+ cond->Ptr = win32_cond;
+ win32_cond->semaphore = CreateSemaphore(NULL, 0, 0x7fffffff, NULL);
+ if (!win32_cond->semaphore)
+ return ENOMEM;
+ win32_cond->waiters_done = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (!win32_cond->waiters_done)
+ return ENOMEM;
+
+ pthread_mutex_init(&win32_cond->mtx_waiter_count, NULL);
+ pthread_mutex_init(&win32_cond->mtx_broadcast, NULL);
+ return 0;
+}
+
+static av_unused int pthread_cond_destroy(pthread_cond_t *cond)
+{
+ win32_cond_t *win32_cond = cond->Ptr;
+ /* native condition variables do not destroy */
+ if (cond_init)
+ return 0;
+
+ /* non native condition variables */
+ CloseHandle(win32_cond->semaphore);
+ CloseHandle(win32_cond->waiters_done);
+ pthread_mutex_destroy(&win32_cond->mtx_waiter_count);
+ pthread_mutex_destroy(&win32_cond->mtx_broadcast);
+ av_freep(&win32_cond);
+ cond->Ptr = NULL;
+ return 0;
+}
+
+static av_unused int pthread_cond_broadcast(pthread_cond_t *cond)
+{
+ win32_cond_t *win32_cond = cond->Ptr;
+ int have_waiter;
+
+ if (cond_broadcast) {
+ cond_broadcast(cond);
+ return 0;
+ }
+
+ /* non native condition variables */
+ pthread_mutex_lock(&win32_cond->mtx_broadcast);
+ pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+ have_waiter = 0;
+
+ if (win32_cond->waiter_count) {
+ win32_cond->is_broadcast = 1;
+ have_waiter = 1;
+ }
+
+ if (have_waiter) {
+ ReleaseSemaphore(win32_cond->semaphore, win32_cond->waiter_count, NULL);
+ pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+ WaitForSingleObject(win32_cond->waiters_done, INFINITE);
+ ResetEvent(win32_cond->waiters_done);
+ win32_cond->is_broadcast = 0;
+ } else
+ pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+ pthread_mutex_unlock(&win32_cond->mtx_broadcast);
+ return 0;
+}
+
+static av_unused int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+ win32_cond_t *win32_cond = cond->Ptr;
+ int last_waiter;
+ if (cond_wait) {
+ cond_wait(cond, mutex, INFINITE);
+ return 0;
+ }
+
+ /* non native condition variables */
+ pthread_mutex_lock(&win32_cond->mtx_broadcast);
+ pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+ win32_cond->waiter_count++;
+ pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+ pthread_mutex_unlock(&win32_cond->mtx_broadcast);
+
+ // unlock the external mutex
+ pthread_mutex_unlock(mutex);
+ WaitForSingleObject(win32_cond->semaphore, INFINITE);
+
+ pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+ win32_cond->waiter_count--;
+ last_waiter = !win32_cond->waiter_count || !win32_cond->is_broadcast;
+ pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+
+ if (last_waiter)
+ SetEvent(win32_cond->waiters_done);
+
+ // lock the external mutex
+ return pthread_mutex_lock(mutex);
+}
+
+static av_unused int pthread_cond_signal(pthread_cond_t *cond)
+{
+ win32_cond_t *win32_cond = cond->Ptr;
+ int have_waiter;
+ if (cond_signal) {
+ cond_signal(cond);
+ return 0;
+ }
+
+ pthread_mutex_lock(&win32_cond->mtx_broadcast);
+
+ /* non-native condition variables */
+ pthread_mutex_lock(&win32_cond->mtx_waiter_count);
+ have_waiter = win32_cond->waiter_count;
+ pthread_mutex_unlock(&win32_cond->mtx_waiter_count);
+
+ if (have_waiter) {
+ ReleaseSemaphore(win32_cond->semaphore, 1, NULL);
+ WaitForSingleObject(win32_cond->waiters_done, INFINITE);
+ ResetEvent(win32_cond->waiters_done);
+ }
+
+ pthread_mutex_unlock(&win32_cond->mtx_broadcast);
+ return 0;
+}
+#endif
+
+static av_unused void w32thread_init(void)
+{
+#if _WIN32_WINNT < 0x0600
+ HANDLE kernel_dll = GetModuleHandle(TEXT("kernel32.dll"));
+ /* if one is available, then they should all be available */
+ cond_init =
+ (void*)GetProcAddress(kernel_dll, "InitializeConditionVariable");
+ cond_broadcast =
+ (void*)GetProcAddress(kernel_dll, "WakeAllConditionVariable");
+ cond_signal =
+ (void*)GetProcAddress(kernel_dll, "WakeConditionVariable");
+ cond_wait =
+ (void*)GetProcAddress(kernel_dll, "SleepConditionVariableCS");
+ initonce_begin =
+ (void*)GetProcAddress(kernel_dll, "InitOnceBeginInitialize");
+ initonce_complete =
+ (void*)GetProcAddress(kernel_dll, "InitOnceComplete");
+#endif
+
+}
+
+#endif /* COMPAT_W32PTHREADS_H */
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