Initial Android support

* Adds an 'android' feature, which is automatically detected.
* Android has a broken strnlen, so a wrapper is added from FreeBSD.

audio/out/ao_wasapi_utils.c

@@ -29,6 +29,7 @@
 #include "audio/format.h"
 #include "osdep/timer.h"
 #include "osdep/io.h"
+#include "osdep/strnlen.h"
 #include "ao_wasapi.h"
 
 #define MIXER_DEFAULT_LABEL L"mpv - video player"

common/common.c

@@ -25,6 +25,7 @@
 #include "misc/bstr.h"
 #include "misc/ctype.h"
 #include "common/common.h"
+#include "osdep/strnlen.h"
 
 #define appendf(ptr, ...) \
     do {(*(ptr)) = talloc_asprintf_append_buffer(*(ptr), __VA_ARGS__);} while(0)

osdep/android/strnlen.c

@@ -0,0 +1,40 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stddef.h>
+#include "osdep/android/strnlen.h"
+
+size_t
+freebsd_strnlen(const char *s, size_t maxlen)
+{
+	size_t len;
+
+	for (len = 0; len < maxlen; len++, s++) {
+		if (!*s)
+			break;
+	}
+	return (len);
+}

osdep/android/strnlen.h

@@ -0,0 +1,33 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef MP_OSDEP_ANDROID_STRNLEN
+#define MP_OSDEP_ANDROID_STRNLEN
+
+size_t
+freebsd_strnlen(const char *s, size_t maxlen);
+
+#endif

osdep/strnlen.h

@@ -0,0 +1,29 @@
+/*
+ * strnlen wrapper
+ *
+ * This file is part of mpv.
+ *
+ * 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
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MP_OSDEP_STRNLEN
+#define MP_OSDEP_STRNLEN
+
+#ifdef __ANDROID__
+// strnlen is broken on current android ndk, see https://code.google.com/p/android/issues/detail?id=74741
+#include "osdep/android/strnlen.h"
+#define strnlen freebsd_strnlen
+#endif
+
+#endif

ta/ta_utils.c

@@ -15,6 +15,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <assert.h>
+#include "osdep/strnlen.h"
 
 #define TA_NO_WRAPPERS
 #include "ta.h"

wscript

@@ -740,6 +740,10 @@ video_output_features = [
         'desc': 'Direct3D support',
         'deps': [ 'win32' ],
         'func': check_cc(header_name='d3d9.h'),
+    }, {
+        'name': '--android',
+        'desc': 'Android support',
+        'func': check_statement('android/api-level.h', '(void)__ANDROID__'),  # arbitrary android-specific header
     }, {
         # We need MMAL/bcm_host/dispmanx APIs. Also, most RPI distros require
         # every project to hardcode the paths to the include directories. Also,

wscript_build.py

@@ -396,6 +396,7 @@ def build(ctx):
         ( "osdep/windows_utils.c",               "win32" ),
         ( "osdep/mpv.rc",                        "win32-executable" ),
         ( "osdep/win32/pthread.c",               "win32-internal-pthreads"),
+        ( "osdep/android/strnlen.c",             "android"),
 
         ## tree_allocator
         "ta/ta.c", "ta/ta_talloc.c", "ta/ta_utils.c"