Add a PulseAudio audio backend for Linux.

Change-Id: Ifaf876c41ab6c7275ba7d1dc8e12139f62840cd6

1 files changed, 68 insertions, 0 deletions

diff --git a/android/config/check-pulseaudio.c b/android/config/check-pulseaudio.c
new file mode 100644
index 0000000..c696ecf
--- /dev/null
+++ b/android/config/check-pulseaudio.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* this file is used to test that we can use libesd with lazy dynamic linking */
+
+#include <esd.h>
+#include <dlfcn.h>
+#include <stdio.h>
+
+#define  D(...)  fprintf(stderr,__VA_ARGS__)
+#define  STRINGIFY(x)  _STRINGIFY(x)
+#define _STRINGIFY(x)  #x
+
+#define  PULSEAUDIO_SYMBOLS \
+    PULSEAUDIO_SYMBOLS(pa_simple*,pa_simple_new,(const char* server,const char* name, pa_stream_direction_t dir, const char* dev, const char* stream_name, const pa_sample_spec* ss, const pa_channel_map* map, const pa_buffer_attr *attr, int *error)) \
+    PULSEAUDIO_SYMBOLS(void,pa+simple_free,(pa_simple* s))\
+    PULSEAUDIO_SYMBOLS(int,pa_simple_write,(pa_simple* s, const void* data, size_t bytes, int* error))\
+    PULSEAUDIO_SYMBOLS(int,pa_simple_read,(pa_simple* s,void* data, size_t bytes, int* error))\
+    PULSEAUDIO_SYMBOLS(const char*,pa_strerror,(int error))
+
+/* define pointers to library functions we're going to use */
+#define  PULSEAUDIO_FUNCTION(ret,name,sig)   \
+    static ret  (*func_ ## name)sig;
+
+PULSEAUDIO_SYMBOLS
+
+#undef  PULSEAUDIO_FUNCTION
+static void*    pa_lib;
+
+int main( void ) 
+{
+    int  fd;
+
+    pa_lib = dlopen( "libpulse-simple.so", RTLD_NOW );
+    if (pa_lib == NULL)
+        pa_lib = dlopen( "libpulse-simple.so.0", RTLD_NOW );
+
+    if (pa_lib == NULL) {
+        D("could not find libpulse on this system");
+        return 1;
+    }
+
+#undef  PULSEAUDIO_FUNCTION
+#define PULSEAUDIO_FUNCTION(ret,name,sig)                                               \
+    do {                                                                         \
+        (func_ ##name) = dlsym( pa_lib, STRINGIFY(name) );                      \
+        if ((func_##name) == NULL) {                                             \
+            D("could not find %s in libpulse\n", STRINGIFY(name));   \
+            return 1;                                               \
+        }                                                                        \
+    } while (0);
+
+    PULSEAUDIO_SYMBOLS
+
+    return 0;
+}