Add a hack to send AudioSystem::setParameters' args over TCP.

This is needed to send parameters out to card_parameters_setter,
to send these parameters to Pulseaudio.

media/libmedia/AudioSystem.cpp

@@ -25,6 +25,12 @@
 #include <media/IAudioPolicyService.h>
 #include <math.h>
 
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
 #include <system/audio.h>
 
 // ----------------------------------------------------------------------------
@@ -201,6 +207,41 @@ status_t AudioSystem::setMode(audio_mode_t mode)
 }
 
 status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) {
+    if (ioHandle == 0) { //Indicate global param
+        int sockfd, portno = 9999, bytes_written;
+        struct sockaddr_in serv_addr;
+        char buffer[256];
+
+        sockfd = socket(AF_INET, SOCK_STREAM, 0);
+        if (sockfd < 0) {
+          ALOGE("setParameters: ERROR opening socket");
+          return PERMISSION_DENIED;
+        }
+
+        bzero((char *) &serv_addr, sizeof(serv_addr));
+        serv_addr.sin_family = AF_INET;
+        inet_aton("127.0.0.1", &serv_addr.sin_addr);
+        serv_addr.sin_port = htons(portno);
+
+        if (connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0) {
+            ALOGE("setParameters: ERROR connecting");
+            return PERMISSION_DENIED;
+        }
+
+        strcpy(buffer, keyValuePairs.string());
+        strcat(buffer, "\n");
+
+        bytes_written = write(sockfd, buffer, strlen(buffer));
+        if (bytes_written < 0) {
+            ALOGE("setParameters: ERROR writing to socket");
+            close(sockfd);
+            return PERMISSION_DENIED;
+        }
+
+        close(sockfd);
+        return OK;
+    }
+
     const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
     if (af == 0) return PERMISSION_DENIED;
     return af->setParameters(ioHandle, keyValuePairs);