[alsa-devel] [PATCH 1/2] New Control Plugin - arcam-av
Peter Stokes
linux at dadeos.co.uk
Sun Jan 4 13:37:11 CET 2009
On Saturday 03 January 2009 23:35:58 Robin H. Johnson wrote:
> On Sat, Jan 03, 2009 at 08:56:35PM +0000, Peter Stokes wrote:
> > Signed-off-by: Peter Stokes <linux at dadeos.co.uk>
>
> Please exclude the changes to Makefile.in in patches 1 and 2.
> Makefile.am is the only ones that are needed since Makefile.in is
> generated.
Sorry about that.
Please find below a consolidated patch with Makefile.in changes excluded.
Signed-off-by: Peter Stokes <linux at dadeos.co.uk>
diff -Nrup alsa-plugins-1.0.18-orig/Makefile.am
alsa-plugins-1.0.18/Makefile.am
--- alsa-plugins-1.0.18-orig/Makefile.am 2008-10-29 12:42:13.000000000 +0000
+++ alsa-plugins-1.0.18/Makefile.am 2009-01-02 22:22:26.000000000 +0000
@@ -18,7 +18,7 @@ if HAVE_PPH
PPHDIR = pph
endif
-SUBDIRS = oss mix $(PPHDIR) $(JACKDIR) $(PULSEDIR) $(SAMPLERATEDIR) $(A52DIR)
$(LAVCRATEDIR) $(MAEMODIR) usb_stream doc
+SUBDIRS = oss mix $(PPHDIR) $(JACKDIR) $(PULSEDIR) $(SAMPLERATEDIR) $(A52DIR)
$(LAVCRATEDIR) $(MAEMODIR) usb_stream arcam-av doc
EXTRA_DIST = gitcompile version COPYING.GPL
AUTOMAKE_OPTIONS = foreign
diff -Nrup alsa-plugins-1.0.18-orig/arcam-av/Makefile.am
alsa-plugins-1.0.18/arcam-av/Makefile.am
--- alsa-plugins-1.0.18-orig/arcam-av/Makefile.am 1970-01-01
01:00:00.000000000 +0100
+++ alsa-plugins-1.0.18/arcam-av/Makefile.am 2009-01-02 22:31:03.000000000
+0000
@@ -0,0 +1,9 @@
+asound_module_ctl_arcam_av_LTLIBRARIES = libasound_module_ctl_arcam_av.la
+
+asound_module_ctl_arcam_avdir = @ALSA_PLUGIN_DIR@
+
+AM_CFLAGS = -Wall -g @ALSA_CFLAGS@
+AM_LDFLAGS = -module -avoid-version -export-dynamic -no-undefined
+
+libasound_module_ctl_arcam_av_la_SOURCES = ctl_arcam_av.c arcam_av.c
arcam_av.h
+libasound_module_ctl_arcam_av_la_LIBADD = @ALSA_LIBS@
diff -Nrup alsa-plugins-1.0.18-orig/arcam-av/arcam_av.c
alsa-plugins-1.0.18/arcam-av/arcam_av.c
--- alsa-plugins-1.0.18-orig/arcam-av/arcam_av.c 1970-01-01 01:00:00.000000000
+0100
+++ alsa-plugins-1.0.18/arcam-av/arcam_av.c 2009-01-02 22:30:55.000000000
+0000
@@ -0,0 +1,638 @@
+/*
+ * ALSA -> Arcam AV control plugin
+ *
+ * Copyright (c) 2009 by Peter Stokes <linux at dadeos.co.uk>
+ *
+ * This library 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.
+ *
+ * This program 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include "arcam_av.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+
+int arcam_av_connect(const char* port)
+{
+ int fd = open(port, O_RDWR | O_NOCTTY);
+ if (fd < 0)
+ return -errno;
+
+ struct termios portsettings;
+ bzero(&portsettings, sizeof(portsettings));
+ portsettings.c_cflag = B38400 | CS8 | CLOCAL | CREAD;
+ portsettings.c_iflag = IGNPAR;
+ portsettings.c_oflag = 0;
+ portsettings.c_lflag = 0;
+ portsettings.c_cc[VTIME] = 0;
+ portsettings.c_cc[VMIN] = 5;
+ tcflush(fd, TCIFLUSH);
+ tcsetattr(fd, TCSANOW, &portsettings);
+
+ return fd;
+}
+
+
+int arcam_av_send(int fd, arcam_av_cc_t command, unsigned char param1,
unsigned char param2)
+{
+ char buffer[7] = {'P', 'C', '_', command, param1, param2, 0x0D};
+
+ tcdrain(fd);
+ ssize_t bytes = write(fd, buffer, 7);
+
+ if (bytes == 7)
+ return 0;
+ else if (bytes >= 0)
+ return -1;
+ else
+ return -errno;
+}
+
+
+static int arcam_av_receive(int fd, arcam_av_cc_t* command, unsigned char*
param1, unsigned char* param2)
+{
+ static int index = 0;
+ static arcam_av_cc_t received_command;
+ static unsigned char received_param1;
+ static unsigned char received_param2;
+
+ do {
+ static char buffer[8];
+ ssize_t bytes = read(fd, buffer, sizeof buffer - index);
+
+ if (bytes <= 0)
+ return -errno;
+
+ char* cursor = buffer;
+
+ while(bytes > 0) {
+ switch(index++) {
+ case 0:
+ if (*cursor != 'A')
+ index = 0;
+ break;
+
+ case 1:
+ if (*cursor != 'V') {
+ index = 0;
+ continue;
+ }
+ break;
+
+ case 2:
+ if (*cursor != '_') {
+ index = 0;
+ continue;
+ }
+ break;
+
+ case 3:
+ received_command = *cursor;
+ break;
+
+ case 4:
+ if (*cursor != ARCAM_AV_OK) {
+ index = 0;
+ continue;
+ }
+ break;
+
+ case 5:
+ received_param1 = *cursor;
+ break;
+
+ case 6:
+ received_param2 = *cursor;
+ break;
+
+ case 7:
+ if (*cursor != 0x0D) {
+ index = 0;
+ continue;
+ }
+ break;
+ }
+
+ ++cursor;
+ --bytes;
+ }
+ } while (index < 8);
+
+ index = 0;
+ *command = received_command;
+ *param1 = received_param1;
+ *param2 = received_param2;
+
+ return 0;
+}
+
+
+static int arcam_av_update(arcam_av_state_t* state, int fd)
+{
+ int result = -1;
+
+ arcam_av_cc_t command = 0;
+ unsigned char param1 = 0;
+ unsigned char param2 = 0;
+
+ while (!arcam_av_receive(fd, &command, ¶m1, ¶m2)) {
+ switch(command) {
+ case ARCAM_AV_POWER:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.power = param2;
+ result = 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ state->zone2.power = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_VOLUME_CHANGE:
+ case ARCAM_AV_VOLUME_SET:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.volume = param2;
+ result = 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ state->zone2.volume = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_MUTE:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.mute = param2;
+ result = 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ state->zone2.mute = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_DIRECT:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.direct = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_SOURCE:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.source = param2;
+ result = 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ state->zone2.source = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_SOURCE_TYPE:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.source_type = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_STEREO_DECODE:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.stereo_decode = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_STEREO_EFFECT:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.stereo_effect = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case ARCAM_AV_MULTI_DECODE:
+ switch(param1) {
+ case ARCAM_AV_ZONE1:
+ state->zone1.multi_decode = param2;
+ result = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return result;
+}
+
+
+static void arcam_av_state_query(int fd)
+{
+ arcam_av_send(fd, ARCAM_AV_POWER, ARCAM_AV_ZONE1, ARCAM_AV_POWER_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_VOLUME_CHANGE, ARCAM_AV_ZONE1,
ARCAM_AV_VOLUME_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_MUTE, ARCAM_AV_ZONE1, ARCAM_AV_MUTE_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_DIRECT, ARCAM_AV_ZONE1, ARCAM_AV_DIRECT_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_SOURCE, ARCAM_AV_ZONE1, ARCAM_AV_SOURCE_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_SOURCE_TYPE, ARCAM_AV_ZONE1,
ARCAM_AV_SOURCE_TYPE_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_STEREO_DECODE, ARCAM_AV_ZONE1,
ARCAM_AV_STEREO_DECODE_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_MULTI_DECODE, ARCAM_AV_ZONE1,
ARCAM_AV_MULTI_DECODE_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_STEREO_EFFECT, ARCAM_AV_ZONE1,
ARCAM_AV_STEREO_EFFECT_REQUEST);
+
+ arcam_av_send(fd, ARCAM_AV_POWER, ARCAM_AV_ZONE2, ARCAM_AV_POWER_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_VOLUME_CHANGE, ARCAM_AV_ZONE2,
ARCAM_AV_VOLUME_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_MUTE, ARCAM_AV_ZONE2, ARCAM_AV_MUTE_REQUEST);
+ arcam_av_send(fd, ARCAM_AV_SOURCE, ARCAM_AV_ZONE2, ARCAM_AV_SOURCE_REQUEST);
+}
+
+
+static int arcam_av_state_shm_id = -1;
+
+arcam_av_state_t* arcam_av_state_attach(const char* port)
+{
+ if (arcam_av_state_shm_id < 0) {
+ struct stat port_stat;
+ if (stat(port, &port_stat))
+ return NULL;
+
+ key_t ipc_key = ftok(port, 'A');
+ if (ipc_key < 0)
+ return NULL;
+
+ int shmflg = IPC_CREAT | (port_stat.st_mode & (S_IRWXU | S_IRWXG |
S_IRWXO));
+ arcam_av_state_shm_id = shmget(ipc_key, sizeof(arcam_av_state_t), shmflg);
+ if (arcam_av_state_shm_id < 0)
+ return NULL;
+
+ struct shmid_ds shm_stat;
+ if (shmctl(arcam_av_state_shm_id, IPC_STAT, &shm_stat))
+ return NULL;
+
+ shm_stat.shm_perm.uid = port_stat.st_uid;
+ shm_stat.shm_perm.gid = port_stat.st_gid;
+ shmctl(arcam_av_state_shm_id, IPC_SET, &shm_stat);
+ }
+
+ arcam_av_state_t* state = shmat(arcam_av_state_shm_id, NULL, 0);
+
+ return (state == (void*)-1) ? NULL : state;
+}
+
+
+int arcam_av_state_detach(arcam_av_state_t* state)
+{
+ if (shmdt(state))
+ return -1;
+
+ struct shmid_ds shm_stat;
+ if (shmctl(arcam_av_state_shm_id, IPC_STAT, &shm_stat))
+ return -1;
+
+ if (!shm_stat.shm_nattch) {
+ shmctl(arcam_av_state_shm_id, IPC_RMID, NULL);
+ arcam_av_state_shm_id = -1;
+ }
+
+ return 0;
+}
+
+
+static void arcam_av_server_broadcast(fd_set* fds, int fd_max, void* buffer,
int bytes)
+{
+ int fd;
+ for (fd = 0; fd <= fd_max; ++fd) {
+ if (FD_ISSET(fd, fds)) {
+ send(fd, buffer, bytes, 0);
+ }
+ }
+}
+
+
+static int arcam_av_server_master(int server_fd)
+{
+ int result = 0;
+
+ struct sockaddr_un server_address;
+ socklen_t server_address_length = sizeof(server_address) - 1;
+ if (getsockname(server_fd, (struct sockaddr*) &server_address,
&server_address_length))
+ return -errno;
+
+ server_address.sun_path[server_address_length - offsetof(struct sockaddr_un,
sun_path)] = '\0';
+
+ const char* port = server_address.sun_path + 1;
+
+ int arcam_fd = arcam_av_connect(port);
+
+ arcam_av_state_t* state = arcam_av_state_attach(port);
+ if (!state) {
+ close(arcam_fd);
+ return -errno;
+ }
+
+ arcam_av_state_query(arcam_fd);
+
+ fcntl(arcam_fd, F_SETFL, O_NONBLOCK);
+
+ fd_set all_fds, client_fds, read_fds;
+
+ FD_ZERO(&all_fds);
+ FD_ZERO(&client_fds);
+ FD_SET(arcam_fd, &all_fds);
+ FD_SET(server_fd, &all_fds);
+ int fd, fd_max = MAX(arcam_fd, server_fd);
+
+ for(;;) {
+ read_fds = all_fds;
+
+ if (select(fd_max + 1, &read_fds, NULL, NULL, NULL) < 0) {
+ perror("arcam_av_server_master(): select");
+ result = -errno;
+ break;
+ }
+
+ for(fd = fd_max; fd; --fd) {
+ if (FD_ISSET(fd, &read_fds)) {
+ if (fd == arcam_fd) {
+ if (arcam_av_update(state, arcam_fd))
+ continue;
+
+ arcam_av_server_broadcast(&client_fds, fd_max, "", 1);
+ } else if (fd == server_fd) {
+ struct sockaddr_un client_address;
+ socklen_t client_address_length = sizeof(client_address);
+ int client_fd = accept(server_fd, (struct sockaddr*) &client_address,
&client_address_length);
+
+ if (client_fd >= 0) {
+ FD_SET(client_fd, &all_fds);
+ FD_SET(client_fd, &client_fds);
+ fd_max = MAX(fd_max, client_fd);
+ } else {
+ perror("arcam_av_server_master(): accept");
+ result = -errno;
+ goto exit;
+ }
+ } else {
+ pthread_t thread;
+ int bytes = recv(fd, &thread, sizeof(pthread_t), 0);
+
+ if (bytes > 0) {
+ if (bytes == sizeof(pthread_t)) {
+ if (thread == pthread_self())
+ goto exit;
+
+ arcam_av_server_broadcast(&client_fds, fd_max, &thread,
sizeof(pthread_t));
+ }
+ } else {
+ close(fd);
+ FD_CLR(fd, &all_fds);
+ FD_CLR(fd, &client_fds);
+ fd_max -= (fd_max == fd);
+ }
+ }
+ }
+ }
+ }
+
+exit:
+
+ for (fd = 0; fd <= fd_max; ++fd) {
+ if (fd != server_fd && FD_ISSET(fd, &all_fds)) {
+ close(fd);
+ }
+ }
+
+ if (state)
+ arcam_av_state_detach(state);
+
+ return result;
+}
+
+
+static int arcam_av_server_slave(int server_fd)
+{
+ for (;;) {
+ pthread_t thread;
+ int bytes = recv(server_fd, &thread, sizeof(pthread_t), 0);
+
+ if (bytes > 0) {
+ if (bytes == sizeof(pthread_t))
+ if (thread == pthread_self())
+ return 0;
+ } else {
+ break;
+ }
+ }
+
+ return -1;
+}
+
+
+static void* arcam_av_server_thread(void* context)
+{
+ sem_t* semaphore = context;
+ const char* port = *(const char**)(semaphore + 1);
+
+ struct sockaddr_un address;
+ address.sun_family = AF_FILE;
+ address.sun_path[0] = '\0';
+ strncpy(&address.sun_path[1], port, sizeof(address.sun_path) - 1);
+ int size = offsetof(struct sockaddr_un, sun_path) +
+ MIN(strlen(port) + 1, sizeof(address.sun_path));
+
+ signal(SIGPIPE, SIG_IGN);
+
+ int quit = 0;
+
+ while (!quit) {
+ int server_fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if (server_fd < 0) {
+ perror("arcam_av_server_thread(): socket");
+ break;
+ }
+
+ if (!bind(server_fd, (struct sockaddr*) &address, size)) {
+ if (!listen(server_fd, 10)) {
+ if (semaphore) {
+ sem_post(semaphore);
+ semaphore = NULL;
+ }
+ arcam_av_server_master(server_fd);
+ } else {
+ perror("arcam_av_server_master(): listen");
+ }
+ quit = 1;
+ } else if (errno != EADDRINUSE) {
+ perror("arcam_av_server_thread(): bind");
+ quit = 1;
+ } else if (!connect(server_fd, (struct sockaddr*) &address, size)) {
+ if (semaphore) {
+ sem_post(semaphore);
+ semaphore = NULL;
+ }
+ quit = !arcam_av_server_slave(server_fd);
+ } else {
+ perror("arcam_av_server_thread(): connect");
+ quit = 1;
+ }
+
+ close(server_fd);
+ }
+
+ if (semaphore)
+ sem_post(semaphore);
+
+ return NULL;
+}
+
+
+int arcam_av_server_start(pthread_t* thread, const char* port)
+{
+ struct {
+ sem_t semaphore;
+ const char* port;
+ } context;
+
+ int result = 0;
+
+ if (sem_init(&context.semaphore, 0, 0))
+ return -1;
+
+ context.port = port;
+
+ if (pthread_create(thread, NULL, arcam_av_server_thread, &context))
+ result = -1;
+ else
+ sem_wait(&context.semaphore);
+
+ sem_destroy(&context.semaphore);
+
+ return result;
+}
+
+
+int arcam_av_server_stop(pthread_t thread, const char* port)
+{
+ int client_fd = arcam_av_client(port);
+ if (client_fd < 0)
+ return -1;
+
+ if (send(client_fd, &thread, sizeof(pthread_t), 0) > 0)
+ pthread_join(thread, NULL);
+
+ close(client_fd);
+ return 0;
+}
+
+
+int arcam_av_client(const char* port)
+{
+ int client_fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if (client_fd < 0)
+ return -1;
+
+ struct sockaddr_un address;
+ address.sun_family = AF_FILE;
+ address.sun_path[0] = '\0';
+ strncpy(&address.sun_path[1], port, sizeof(address.sun_path) - 1);
+ int size = offsetof(struct sockaddr_un, sun_path) +
+ MIN(strlen(port) + 1, sizeof(address.sun_path));
+
+ const int max_retries = 5;
+ int retries = max_retries;
+
+ do {
+ if (!connect(client_fd, (struct sockaddr*) &address, size))
+ return client_fd;
+
+ if (!retries--)
+ break;
+
+ struct timeval sleep = {0, 10 * (max_retries - retries)};
+
+ select(0, NULL, NULL, NULL, &sleep);
+
+ } while (errno == ECONNREFUSED);
+
+ perror("arcam_av_client(): connect");
+
+ close(client_fd);
+ return -1;
+}
+
diff -Nrup alsa-plugins-1.0.18-orig/arcam-av/arcam_av.h
alsa-plugins-1.0.18/arcam-av/arcam_av.h
--- alsa-plugins-1.0.18-orig/arcam-av/arcam_av.h 1970-01-01 01:00:00.000000000
+0100
+++ alsa-plugins-1.0.18/arcam-av/arcam_av.h 2009-01-02 22:30:58.000000000
+0000
@@ -0,0 +1,161 @@
+/*
+ * ALSA -> Arcam AV control plugin
+ *
+ * Copyright (c) 2009 by Peter Stokes <linux at dadeos.co.uk>
+ *
+ * This library 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.
+ *
+ * This program 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <pthread.h>
+
+typedef enum {
+ ARCAM_AV_ZONE1 = '1',
+ ARCAM_AV_ZONE2 = '2'
+} arcam_av_zone_t;
+
+
+typedef enum {
+ ARCAM_AV_POWER = '*',
+ ARCAM_AV_VOLUME_CHANGE = '/',
+ ARCAM_AV_VOLUME_SET = '0',
+ ARCAM_AV_MUTE = '.',
+ ARCAM_AV_SOURCE = '1',
+ ARCAM_AV_SOURCE_TYPE = '7',
+ ARCAM_AV_DIRECT = '3',
+ ARCAM_AV_STEREO_DECODE = '4',
+ ARCAM_AV_MULTI_DECODE = '5',
+ ARCAM_AV_STEREO_EFFECT = '6'
+} arcam_av_cc_t;
+
+
+typedef enum {
+ ARCAM_AV_OK = 'P',
+ ARCAM_AV_ERROR = 'R'
+} arcam_av_rc_t;
+
+
+typedef enum {
+ ARCAM_AV_POWER_STAND_BY = '0',
+ ARCAM_AV_POWER_ON = '1',
+ ARCAM_AV_POWER_REQUEST = '9'
+} arcam_av_power_t;
+
+
+typedef enum {
+ ARCAM_AV_VOLUME_MIN = '0',
+ ARCAM_AV_VOLUME_REQUEST = '9'
+} arcam_av_volume_t;
+
+
+typedef enum {
+ ARCAM_AV_MUTE_ON = '0',
+ ARCAM_AV_MUTE_OFF = '1',
+ ARCAM_AV_MUTE_REQUEST = '9'
+} arcam_av_mute_t;
+
+
+typedef enum {
+ ARCAM_AV_DIRECT_DISABLE = '0',
+ ARCAM_AV_DIRECT_ENABLE = '1',
+ ARCAM_AV_DIRECT_REQUEST = '9'
+} arcam_av_direct_t;
+
+
+typedef enum {
+ ARCAM_AV_SOURCE_DVD = '0',
+ ARCAM_AV_SOURCE_SAT = '1',
+ ARCAM_AV_SOURCE_AV = '2',
+ ARCAM_AV_SOURCE_PVR = '3',
+ ARCAM_AV_SOURCE_VCR = '4',
+ ARCAM_AV_SOURCE_CD = '5',
+ ARCAM_AV_SOURCE_FM = '6',
+ ARCAM_AV_SOURCE_AM = '7',
+ ARCAM_AV_SOURCE_DVDA = '8',
+ ARCAM_AV_SOURCE_REQUEST = '9'
+} arcam_av_source_t;
+
+
+typedef enum {
+ ARCAM_AV_SOURCE_TYPE_ANALOGUE = '0',
+ ARCAM_AV_SOURCE_TYPE_DIGITAL = '1',
+ ARCAM_AV_SOURCE_TYPE_REQUEST = '9'
+} arcam_av_source_type_t;
+
+
+typedef enum {
+ ARCAM_AV_STEREO_DECODE_MONO = '.',
+ ARCAM_AV_STEREO_DECODE_STEREO = '/',
+ ARCAM_AV_STEREO_DECODE_PLII_MOVIE = '0',
+ ARCAM_AV_STEREO_DECODE_PLII_MUSIC = '1',
+ ARCAM_AV_STEREO_DECODE_PLIIx_MOVIE = '3',
+ ARCAM_AV_STEREO_DECODE_PLIIx_MUSIC = '4',
+ ARCAM_AV_STEREO_DECODE_DOLBY_PL = '6',
+ ARCAM_AV_STEREO_DECODE_NEO6_CINEMA = '7',
+ ARCAM_AV_STEREO_DECODE_NEO6_MUSIC = '8',
+ ARCAM_AV_STEREO_DECODE_REQUEST = '9'
+} arcam_av_stereo_decode_t;
+
+
+typedef enum {
+ ARCAM_AV_MULTI_DECODE_MONO = '.',
+ ARCAM_AV_MULTI_DECODE_STEREO = '/',
+ ARCAM_AV_MULTI_DECODE_MULTI_CHANNEL = '0',
+ ARCAM_AV_MULTI_DECODE_PLIIx = '2',
+ ARCAM_AV_MULTI_DECODE_REQUEST = '9'
+} arcam_av_multi_decode_t;
+
+
+typedef enum {
+ ARCAM_AV_STEREO_EFFECT_NONE = '0',
+ ARCAM_AV_STEREO_EFFECT_MUSIC = '1',
+ ARCAM_AV_STEREO_EFFECT_PARTY = '2',
+ ARCAM_AV_STEREO_EFFECT_CLUB = '3',
+ ARCAM_AV_STEREO_EFFECT_HALL = '4',
+ ARCAM_AV_STEREO_EFFECT_SPORTS = '5',
+ ARCAM_AV_STEREO_EFFECT_CHURCH = '6',
+ ARCAM_AV_STEREO_EFFECT_REQUEST = '9'
+} arcam_av_stereo_effect_t;
+
+int arcam_av_connect(const char* port);
+int arcam_av_send(int fd, arcam_av_cc_t command, unsigned char param1,
unsigned char param2);
+
+
+typedef struct arcam_av_state {
+ struct {
+ arcam_av_power_t power;
+ unsigned char volume;
+ arcam_av_mute_t mute;
+ arcam_av_direct_t direct;
+ arcam_av_source_t source;
+ arcam_av_source_type_t source_type;
+ arcam_av_stereo_decode_t stereo_decode;
+ arcam_av_stereo_effect_t stereo_effect;
+ arcam_av_multi_decode_t multi_decode;
+ } zone1;
+ struct {
+ arcam_av_power_t power;
+ unsigned char volume;
+ arcam_av_mute_t mute;
+ arcam_av_source_t source;
+ } zone2;
+} arcam_av_state_t;
+
+arcam_av_state_t* arcam_av_state_attach(const char* port);
+int arcam_av_state_detach(arcam_av_state_t* state);
+
+int arcam_av_server_start(pthread_t* thread, const char* port);
+int arcam_av_server_stop(pthread_t thread, const char* port);
+
+int arcam_av_client(const char* port);
diff -Nrup alsa-plugins-1.0.18-orig/arcam-av/ctl_arcam_av.c
alsa-plugins-1.0.18/arcam-av/ctl_arcam_av.c
--- alsa-plugins-1.0.18-orig/arcam-av/ctl_arcam_av.c 1970-01-01
01:00:00.000000000 +0100
+++ alsa-plugins-1.0.18/arcam-av/ctl_arcam_av.c 2009-01-02 22:30:55.000000000
+0000
@@ -0,0 +1,1024 @@
+/*
+ * ALSA -> Arcam AV control plugin
+ *
+ * Copyright (c) 2009 by Peter Stokes <linux at dadeos.co.uk>
+ *
+ * This library 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.
+ *
+ * This program 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <sys/socket.h>
+#include <alsa/asoundlib.h>
+#include <alsa/control_external.h>
+
+#include "arcam_av.h"
+
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MID(a, b, c) ((a) < (b) ? ((b) < (c) ? (b) : ((a) < (c) ? (c) :
(a))) \
+ : ((b) > (c) ? (b) : ((a) > (c) ? (c) :
(a))))
+
+
+static const char* arcam_av_name = "Arcam AV";
+static const char* arcam_av_power_name = "Power Switch";
+static const char* arcam_av_volume_name = "Master Playback Volume";
+static const char* arcam_av_mute_name = "Master Playback Switch";
+static const char* arcam_av_direct_name = "Direct Playback Switch";
+static const char* arcam_av_source_name = "Source Playback Route";
+static const char* arcam_av_source_type_name = "Source Type Playback Route";
+static const char* arcam_av_stereo_decode_name = "Stereo Decode Playback
Route";
+static const char* arcam_av_multi_decode_name = "Multi-Channel Decode
Playback Route";
+static const char* arcam_av_stereo_effect_name = "Stereo Effect Playback
Route";
+
+static const struct {
+ arcam_av_source_t code;
+ const char* name;
+} arcam_av_sources[] = {
+ {ARCAM_AV_SOURCE_DVD, "DVD" },
+ {ARCAM_AV_SOURCE_SAT, "SAT" },
+ {ARCAM_AV_SOURCE_AV, "AV" },
+ {ARCAM_AV_SOURCE_PVR, "PVR" },
+ {ARCAM_AV_SOURCE_VCR, "VCR" },
+ {ARCAM_AV_SOURCE_CD, "CD" },
+ {ARCAM_AV_SOURCE_FM, "FM" },
+ {ARCAM_AV_SOURCE_AM, "AM" },
+ {ARCAM_AV_SOURCE_DVDA, "DVDA" }
+};
+
+static const struct {
+ arcam_av_source_type_t code;
+ const char* name;
+} arcam_av_source_types[] = {
+ {ARCAM_AV_SOURCE_TYPE_ANALOGUE, "Analogue" },
+ {ARCAM_AV_SOURCE_TYPE_DIGITAL, "Digital" }
+};
+
+static const struct {
+ arcam_av_direct_t code;
+ const char* name;
+} arcam_av_direct[] = {
+ {ARCAM_AV_DIRECT_DISABLE, "Disable" },
+ {ARCAM_AV_DIRECT_ENABLE, "Enable" }
+};
+
+static const struct {
+ arcam_av_stereo_decode_t code;
+ const char* name;
+} arcam_av_stereo_decode_modes[] = {
+ {ARCAM_AV_STEREO_DECODE_MONO, "Mono" },
+ {ARCAM_AV_STEREO_DECODE_STEREO, "Stereo" },
+ {ARCAM_AV_STEREO_DECODE_PLII_MOVIE, "Pro Logic II Movie" },
+ {ARCAM_AV_STEREO_DECODE_PLII_MUSIC, "Pro Logic II Music" },
+ {ARCAM_AV_STEREO_DECODE_PLIIx_MOVIE, "Pro Logic IIx Movie" },
+ {ARCAM_AV_STEREO_DECODE_PLIIx_MUSIC, "Pro Logic IIx Music" },
+ {ARCAM_AV_STEREO_DECODE_DOLBY_PL, "Dolby Pro Logic" },
+ {ARCAM_AV_STEREO_DECODE_NEO6_CINEMA, "Neo:6 Cinema" },
+ {ARCAM_AV_STEREO_DECODE_NEO6_MUSIC, "Neo:6 Music" }
+};
+
+static const struct {
+ arcam_av_multi_decode_t code;
+ const char* name;
+} arcam_av_multi_decode_modes[] = {
+ {ARCAM_AV_MULTI_DECODE_MONO, "Mono down-mix" },
+ {ARCAM_AV_MULTI_DECODE_STEREO, "Stereo down-mix" },
+ {ARCAM_AV_MULTI_DECODE_MULTI_CHANNEL, "Multi-channel" },
+ {ARCAM_AV_MULTI_DECODE_PLIIx, "Pro Logic IIx" }
+};
+
+static const struct {
+ arcam_av_stereo_effect_t code;
+ const char* name;
+} arcam_av_stereo_effects[] = {
+ {ARCAM_AV_STEREO_EFFECT_NONE, "None" },
+ {ARCAM_AV_STEREO_EFFECT_MUSIC, "Music" },
+ {ARCAM_AV_STEREO_EFFECT_PARTY, "Party" },
+ {ARCAM_AV_STEREO_EFFECT_CLUB, "Club" },
+ {ARCAM_AV_STEREO_EFFECT_HALL, "Hall" },
+ {ARCAM_AV_STEREO_EFFECT_SPORTS, "Sports" },
+ {ARCAM_AV_STEREO_EFFECT_CHURCH, "Church" }
+};
+
+
+typedef struct snd_ctl_arcam_av {
+ snd_ctl_ext_t ext;
+ int port_fd;
+ int shm_id;
+ const char* port;
+ arcam_av_zone_t zone;
+ arcam_av_state_t local;
+ arcam_av_state_t* global;
+ pthread_t server;
+} snd_ctl_arcam_av_t;
+
+static void arcam_av_close(snd_ctl_ext_t *ext)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ if (arcam_av->port_fd >= 0)
+ close(arcam_av->port_fd);
+
+ if (arcam_av->global)
+ arcam_av_state_detach(arcam_av->global);
+
+ if (arcam_av->ext.poll_fd >= 0) {
+ close(arcam_av->ext.poll_fd);
+ arcam_av_server_stop(arcam_av->server, arcam_av->port);
+ }
+
+ free(arcam_av);
+}
+
+static int arcam_av_elem_count(snd_ctl_ext_t *ext)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ return arcam_av->zone == ARCAM_AV_ZONE1 ? 9 : 4;
+}
+
+static int arcam_av_elem_list(snd_ctl_ext_t *ext, unsigned int offset,
snd_ctl_elem_id_t *id)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
+
+ if (arcam_av->zone == ARCAM_AV_ZONE1) {
+ switch(offset) {
+ case 0:
+ snd_ctl_elem_id_set_name(id, arcam_av_power_name);
+ break;
+
+ case 1:
+ snd_ctl_elem_id_set_name(id, arcam_av_volume_name);
+ break;
+
+ case 2:
+ snd_ctl_elem_id_set_name(id, arcam_av_mute_name);
+ break;
+
+ case 3:
+ snd_ctl_elem_id_set_name(id, arcam_av_direct_name);
+ break;
+
+ case 4:
+ snd_ctl_elem_id_set_name(id, arcam_av_source_name);
+ break;
+
+ case 5:
+ snd_ctl_elem_id_set_name(id, arcam_av_source_type_name);
+ break;
+
+ case 6:
+ snd_ctl_elem_id_set_name(id, arcam_av_stereo_decode_name);
+ break;
+
+ case 7:
+ snd_ctl_elem_id_set_name(id, arcam_av_multi_decode_name);
+ break;
+
+ case 8:
+ snd_ctl_elem_id_set_name(id, arcam_av_stereo_effect_name);
+ break;
+ }
+ } else {
+ switch(offset) {
+ case 0:
+ snd_ctl_elem_id_set_name(id, arcam_av_power_name);
+ break;
+
+ case 1:
+ snd_ctl_elem_id_set_name(id, arcam_av_volume_name);
+ break;
+
+ case 2:
+ snd_ctl_elem_id_set_name(id, arcam_av_mute_name);
+ break;
+
+ case 3:
+ snd_ctl_elem_id_set_name(id, arcam_av_source_name);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static snd_ctl_ext_key_t arcam_av_find_elem(snd_ctl_ext_t *ext
ATTRIBUTE_UNUSED,
+ const snd_ctl_elem_id_t *id)
+{
+ const char *name;
+
+ name = snd_ctl_elem_id_get_name(id);
+ if (!strcmp(name, arcam_av_power_name)) {
+ return ARCAM_AV_POWER;
+ } else if (!strcmp(name, arcam_av_volume_name)) {
+ return ARCAM_AV_VOLUME_SET;
+ } else if (!strcmp(name, arcam_av_mute_name)) {
+ return ARCAM_AV_MUTE;
+ } else if (!strcmp(name, arcam_av_direct_name)) {
+ return ARCAM_AV_DIRECT;
+ } else if (!strcmp(name, arcam_av_source_name)) {
+ return ARCAM_AV_SOURCE;
+ } else if (!strcmp(name, arcam_av_source_type_name)) {
+ return ARCAM_AV_SOURCE_TYPE;
+ } else if (!strcmp(name, arcam_av_stereo_decode_name)) {
+ return ARCAM_AV_STEREO_DECODE;
+ } else if (!strcmp(name, arcam_av_multi_decode_name)) {
+ return ARCAM_AV_MULTI_DECODE;
+ } else if (!strcmp(name, arcam_av_stereo_effect_name)) {
+ return ARCAM_AV_STEREO_EFFECT;
+ }
+
+ return SND_CTL_EXT_KEY_NOT_FOUND;
+}
+
+static int arcam_av_get_attribute(snd_ctl_ext_t *ext ATTRIBUTE_UNUSED,
+ snd_ctl_ext_key_t key, int *type,
+ unsigned int *acc, unsigned int *count)
+{
+ switch(key) {
+ case ARCAM_AV_POWER:
+ *type = SND_CTL_ELEM_TYPE_BOOLEAN;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_VOLUME_SET:
+ *type = SND_CTL_ELEM_TYPE_INTEGER;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_MUTE:
+ *type = SND_CTL_ELEM_TYPE_BOOLEAN;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_DIRECT:
+ *type = SND_CTL_ELEM_TYPE_ENUMERATED;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_SOURCE:
+ *type = SND_CTL_ELEM_TYPE_ENUMERATED;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_SOURCE_TYPE:
+ *type = SND_CTL_ELEM_TYPE_ENUMERATED;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_STEREO_DECODE:
+ *type = SND_CTL_ELEM_TYPE_ENUMERATED;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_MULTI_DECODE:
+ *type = SND_CTL_ELEM_TYPE_ENUMERATED;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ case ARCAM_AV_STEREO_EFFECT:
+ *type = SND_CTL_ELEM_TYPE_ENUMERATED;
+ *acc = SND_CTL_EXT_ACCESS_READWRITE;
+ *count = 1;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int arcam_av_get_integer_info(snd_ctl_ext_t *ext,
+ snd_ctl_ext_key_t key,
+ long *imin, long *imax, long *istep)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ switch(key) {
+ case ARCAM_AV_VOLUME_SET:
+ *istep = 1;
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ *imin = 0;
+ *imax = 100;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ *imin = 20;
+ *imax = 83;
+ break;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int arcam_av_get_enumerated_info(snd_ctl_ext_t *ext ATTRIBUTE_UNUSED,
+ snd_ctl_ext_key_t key,
+ unsigned int *items)
+{
+ switch(key) {
+ case ARCAM_AV_SOURCE:
+ *items = ARRAY_SIZE(arcam_av_sources);
+ break;
+
+ case ARCAM_AV_SOURCE_TYPE:
+ *items = ARRAY_SIZE(arcam_av_source_types);
+ break;
+
+ case ARCAM_AV_DIRECT:
+ *items = ARRAY_SIZE(arcam_av_direct);
+ break;
+
+ case ARCAM_AV_STEREO_DECODE:
+ *items = ARRAY_SIZE(arcam_av_stereo_decode_modes);
+ break;
+
+ case ARCAM_AV_MULTI_DECODE:
+ *items = ARRAY_SIZE(arcam_av_multi_decode_modes);
+ break;
+
+ case ARCAM_AV_STEREO_EFFECT:
+ *items = ARRAY_SIZE(arcam_av_stereo_effects);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int arcam_av_get_enumerated_name(snd_ctl_ext_t *ext ATTRIBUTE_UNUSED,
+ snd_ctl_ext_key_t key,
+ unsigned int item, char *name,
+ size_t name_max_len)
+{
+ const char* label;
+
+ switch(key) {
+ case ARCAM_AV_SOURCE:
+ if (item >= ARRAY_SIZE(arcam_av_sources))
+ return -EINVAL;
+
+ label = arcam_av_sources[item].name;
+ break;
+
+ case ARCAM_AV_SOURCE_TYPE:
+ if (item >= ARRAY_SIZE(arcam_av_source_types))
+ return -EINVAL;
+
+ label = arcam_av_source_types[item].name;
+ break;
+
+ case ARCAM_AV_DIRECT:
+ if (item >= ARRAY_SIZE(arcam_av_direct))
+ return -EINVAL;
+
+ label = arcam_av_direct[item].name;
+ break;
+
+ case ARCAM_AV_STEREO_DECODE:
+ if (item >= ARRAY_SIZE(arcam_av_stereo_decode_modes))
+ return -EINVAL;
+
+ label = arcam_av_stereo_decode_modes[item].name;
+ break;
+
+ case ARCAM_AV_MULTI_DECODE:
+ if (item >= ARRAY_SIZE(arcam_av_multi_decode_modes))
+ return -EINVAL;
+
+ label = arcam_av_multi_decode_modes[item].name;
+ break;
+
+ case ARCAM_AV_STEREO_EFFECT:
+ if (item >= ARRAY_SIZE(arcam_av_stereo_effects))
+ return -EINVAL;
+
+ label = arcam_av_stereo_effects[item].name;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ strncpy(name, label, name_max_len - 1);
+ name[name_max_len - 1] = '\0';
+
+ return 0;
+}
+
+static int arcam_av_read_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ switch(key) {
+ case ARCAM_AV_POWER:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.power = arcam_av->global->zone1.power;
+ *value = !(arcam_av->local.zone1.power == ARCAM_AV_POWER_STAND_BY);
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.power = arcam_av->global->zone2.power;
+ *value = !(arcam_av->local.zone2.power == ARCAM_AV_POWER_STAND_BY);
+ break;
+ }
+ break;
+
+ case ARCAM_AV_VOLUME_SET:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.volume = arcam_av->global->zone1.volume;
+ *value = MID(0, arcam_av->local.zone1.volume - ARCAM_AV_VOLUME_MIN, 100);
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.volume = arcam_av->global->zone2.volume;
+ *value = MID(20, arcam_av->local.zone2.volume - ARCAM_AV_VOLUME_MIN, 83);
+ break;
+ }
+ break;
+
+ case ARCAM_AV_MUTE:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.mute = arcam_av->global->zone1.mute;
+ *value = !(arcam_av->local.zone1.mute == ARCAM_AV_MUTE_ON);
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.mute = arcam_av->global->zone2.mute;
+ *value = !(arcam_av->local.zone2.mute == ARCAM_AV_MUTE_ON);
+ break;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int arcam_av_read_enumerated(snd_ctl_ext_t *ext,
+ snd_ctl_ext_key_t key,
+ unsigned int *item)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+ unsigned int i;
+
+ switch(key) {
+ case ARCAM_AV_SOURCE:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.source = arcam_av->global->zone1.source;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_sources); ++i) {
+ if (arcam_av_sources[i].code == arcam_av->local.zone1.source) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.source = arcam_av->global->zone2.source;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_sources); ++i) {
+ if (arcam_av_sources[i].code == arcam_av->local.zone2.source) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+ }
+ break;
+
+ case ARCAM_AV_SOURCE_TYPE:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.source_type = arcam_av->global->zone1.source_type;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_source_types); ++i) {
+ if (arcam_av_source_types[i].code == arcam_av->local.zone1.source_type) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_DIRECT:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.direct = arcam_av->global->zone1.direct;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_direct); ++i) {
+ if (arcam_av_direct[i].code == arcam_av->local.zone1.direct) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_STEREO_DECODE:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.stereo_decode =
arcam_av->global->zone1.stereo_decode;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_stereo_decode_modes); ++i) {
+ if (arcam_av_stereo_decode_modes[i].code ==
arcam_av->local.zone1.stereo_decode) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_STEREO_EFFECT:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.stereo_effect =
arcam_av->global->zone1.stereo_effect;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_stereo_effects); ++i) {
+ if (arcam_av_stereo_effects[i].code ==
arcam_av->local.zone1.stereo_effect) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_MULTI_DECODE:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.multi_decode = arcam_av->global->zone1.multi_decode;
+ for (i = 0; i < ARRAY_SIZE(arcam_av_multi_decode_modes); ++i) {
+ if (arcam_av_multi_decode_modes[i].code ==
arcam_av->local.zone1.multi_decode) {
+ *item = i;
+ break;
+ }
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int arcam_av_write_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+ unsigned char volume = ARCAM_AV_VOLUME_MIN;
+
+ switch(key) {
+ case ARCAM_AV_POWER:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.power = ARCAM_AV_POWER_STAND_BY + *value;
+ if (arcam_av->global->zone1.power == arcam_av->local.zone1.power)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.power = ARCAM_AV_POWER_STAND_BY + *value;
+ if (arcam_av->global->zone2.power == arcam_av->local.zone2.power)
+ return 0;
+ break;
+ }
+ break;
+
+ case ARCAM_AV_VOLUME_SET:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.volume = ARCAM_AV_VOLUME_MIN + *value;
+ if (arcam_av->global->zone1.volume == arcam_av->local.zone1.volume)
+ return 0;
+
+ if (arcam_av->global->zone1.mute == ARCAM_AV_MUTE_ON) {
+ arcam_av->global->zone1.volume = arcam_av->local.zone1.volume;
+ return 1;
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.volume = ARCAM_AV_VOLUME_MIN + *value;
+ if (arcam_av->global->zone2.volume == arcam_av->local.zone2.volume)
+ return 0;
+
+ if (arcam_av->global->zone2.mute == ARCAM_AV_MUTE_ON) {
+ arcam_av->global->zone2.volume = arcam_av->local.zone2.volume;
+ return 1;
+ }
+ break;
+ }
+ break;
+
+ case ARCAM_AV_MUTE:
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.mute = ARCAM_AV_MUTE_ON + *value;
+ if (arcam_av->global->zone1.mute == arcam_av->local.zone1.mute)
+ return 0;
+
+ volume = arcam_av->global->zone1.volume;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.mute = ARCAM_AV_MUTE_ON + *value;
+ if (arcam_av->global->zone2.mute == arcam_av->local.zone2.mute)
+ return 0;
+
+ volume = arcam_av->global->zone2.volume;
+ break;
+ }
+
+ if (*value)
+ arcam_av_send(arcam_av->port_fd, ARCAM_AV_VOLUME_SET, arcam_av->zone,
volume);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (!arcam_av_send(arcam_av->port_fd, key, arcam_av->zone, '0' + *value))
+ return 1;
+ else
+ return -1;
+}
+
+static int arcam_av_write_enumerated(snd_ctl_ext_t *ext, snd_ctl_ext_key_t
key, unsigned int *item)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ char code;
+
+ switch(key) {
+ case ARCAM_AV_SOURCE:
+ if (*item >= ARRAY_SIZE(arcam_av_sources))
+ return -EINVAL;
+
+ code = arcam_av_sources[*item].code;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.source = code;
+ if (arcam_av->global->zone1.source == code)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ arcam_av->local.zone2.source = code;
+ if (arcam_av->global->zone2.source == code)
+ return 0;
+ break;
+ }
+ break;
+
+ case ARCAM_AV_SOURCE_TYPE:
+ if (*item >= ARRAY_SIZE(arcam_av_source_types))
+ return -EINVAL;
+
+ code = arcam_av_source_types[*item].code;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.source_type = code;
+ if (arcam_av->global->zone1.source_type == code)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_DIRECT:
+ if (*item >= ARRAY_SIZE(arcam_av_direct))
+ return -EINVAL;
+
+ code = arcam_av_direct[*item].code;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.direct = code;
+ if (arcam_av->global->zone1.direct == code)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_STEREO_DECODE:
+ if (*item >= ARRAY_SIZE(arcam_av_stereo_decode_modes))
+ return -EINVAL;
+
+ code = arcam_av_stereo_decode_modes[*item].code;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.stereo_decode = code;
+ if (arcam_av->global->zone1.stereo_decode == code)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_STEREO_EFFECT:
+ if (*item >= ARRAY_SIZE(arcam_av_stereo_effects))
+ return -EINVAL;
+
+ code = arcam_av_stereo_effects[*item].code;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.stereo_effect = code;
+ if (arcam_av->global->zone1.stereo_effect == code)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ case ARCAM_AV_MULTI_DECODE:
+ if (*item >= ARRAY_SIZE(arcam_av_multi_decode_modes))
+ return -EINVAL;
+
+ code = arcam_av_multi_decode_modes[*item].code;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ arcam_av->local.zone1.multi_decode = code;
+ if (arcam_av->global->zone1.multi_decode == code)
+ return 0;
+ break;
+
+ case ARCAM_AV_ZONE2:
+ return -EINVAL;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (!arcam_av_send(arcam_av->port_fd, key, arcam_av->zone, code))
+ return 1;
+ else
+ return -1;
+}
+
+
+static int arcam_av_read_event(snd_ctl_ext_t *ext, snd_ctl_elem_id_t *id,
unsigned int *event_mask)
+{
+ snd_ctl_arcam_av_t *arcam_av = ext->private_data;
+
+ switch(arcam_av->zone) {
+ case ARCAM_AV_ZONE1:
+ if (arcam_av->local.zone1.power != arcam_av->global->zone1.power) {
+ snd_ctl_elem_id_set_name(id, arcam_av_power_name);
+ arcam_av->local.zone1.power = arcam_av->global->zone1.power;
+ } else if (arcam_av->local.zone1.volume != arcam_av->global->zone1.volume)
{
+ snd_ctl_elem_id_set_name(id, arcam_av_volume_name);
+ arcam_av->local.zone1.volume = arcam_av->global->zone1.volume;
+ } else if (arcam_av->local.zone1.mute != arcam_av->global->zone1.mute) {
+ snd_ctl_elem_id_set_name(id, arcam_av_mute_name);
+ arcam_av->local.zone1.mute = arcam_av->global->zone1.mute;
+ } else if (arcam_av->local.zone1.direct != arcam_av->global->zone1.direct)
{
+ snd_ctl_elem_id_set_name(id, arcam_av_direct_name);
+ arcam_av->local.zone1.direct = arcam_av->global->zone1.direct;
+ } else if (arcam_av->local.zone1.source != arcam_av->global->zone1.source)
{
+ snd_ctl_elem_id_set_name(id, arcam_av_source_name);
+ arcam_av->local.zone1.source = arcam_av->global->zone1.source;
+ } else if (arcam_av->local.zone1.source_type !=
arcam_av->global->zone1.source_type) {
+ snd_ctl_elem_id_set_name(id, arcam_av_source_type_name);
+ arcam_av->local.zone1.source_type = arcam_av->global->zone1.source_type;
+ } else if (arcam_av->local.zone1.stereo_decode !=
arcam_av->global->zone1.stereo_decode) {
+ snd_ctl_elem_id_set_name(id, arcam_av_stereo_decode_name);
+ arcam_av->local.zone1.stereo_decode =
arcam_av->global->zone1.stereo_decode;
+ } else if (arcam_av->local.zone1.stereo_effect !=
arcam_av->global->zone1.stereo_effect) {
+ snd_ctl_elem_id_set_name(id, arcam_av_stereo_effect_name);
+ arcam_av->local.zone1.stereo_effect =
arcam_av->global->zone1.stereo_effect;
+ } else if (arcam_av->local.zone1.multi_decode !=
arcam_av->global->zone1.multi_decode) {
+ snd_ctl_elem_id_set_name(id, arcam_av_multi_decode_name);
+ arcam_av->local.zone1.multi_decode = arcam_av->global->zone1.multi_decode;
+ } else {
+ char buf[10];
+ if (recv(arcam_av->ext.poll_fd, buf, sizeof(buf), 0) <= 0) {
+ close(arcam_av->ext.poll_fd);
+ arcam_av->ext.poll_fd = arcam_av_client(arcam_av->port);
+ if (arcam_av->ext.poll_fd > 0)
+ fcntl(arcam_av->ext.poll_fd, F_SETFL, O_NONBLOCK);
+ }
+
+ return -EAGAIN;
+ }
+ break;
+
+ case ARCAM_AV_ZONE2:
+ if (arcam_av->local.zone2.power != arcam_av->global->zone2.power) {
+ snd_ctl_elem_id_set_name(id, arcam_av_power_name);
+ arcam_av->local.zone2.power = arcam_av->global->zone2.power;
+ } else if (arcam_av->local.zone2.volume != arcam_av->global->zone2.volume)
{
+ snd_ctl_elem_id_set_name(id, arcam_av_volume_name);
+ arcam_av->local.zone2.volume = arcam_av->global->zone2.volume;
+ } else if (arcam_av->local.zone2.mute != arcam_av->global->zone2.mute) {
+ snd_ctl_elem_id_set_name(id, arcam_av_mute_name);
+ arcam_av->local.zone2.mute = arcam_av->global->zone2.mute;
+ } else if (arcam_av->local.zone2.source != arcam_av->global->zone2.source)
{
+ snd_ctl_elem_id_set_name(id, arcam_av_source_name);
+ arcam_av->local.zone2.source = arcam_av->global->zone2.source;
+ } else {
+ char buf[10];
+ if (recv(arcam_av->ext.poll_fd, buf, sizeof(buf), 0) <= 0) {
+ close(arcam_av->ext.poll_fd);
+ arcam_av->ext.poll_fd = arcam_av_client(arcam_av->port);
+ if (arcam_av->ext.poll_fd > 0)
+ fcntl(arcam_av->ext.poll_fd, F_SETFL, O_NONBLOCK);
+ }
+
+ return -EAGAIN;
+ }
+ break;
+ }
+
+ snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
+
+ *event_mask = SND_CTL_EVENT_MASK_VALUE;
+
+ return 1;
+}
+
+
+static snd_ctl_ext_callback_t arcam_av_ext_callback = {
+ .close = arcam_av_close,
+ .elem_count = arcam_av_elem_count,
+ .elem_list = arcam_av_elem_list,
+ .find_elem = arcam_av_find_elem,
+ .get_attribute = arcam_av_get_attribute,
+ .get_integer_info = arcam_av_get_integer_info,
+ .get_enumerated_info = arcam_av_get_enumerated_info,
+ .get_enumerated_name = arcam_av_get_enumerated_name,
+ .read_integer = arcam_av_read_integer,
+ .read_enumerated = arcam_av_read_enumerated,
+ .write_integer = arcam_av_write_integer,
+ .write_enumerated = arcam_av_write_enumerated,
+ .read_event = arcam_av_read_event,
+};
+
+
+SND_CTL_PLUGIN_DEFINE_FUNC(arcam_av)
+{
+ snd_config_iterator_t it, next;
+ const char *port = "/dev/ttyS0";
+ long zone = 1;
+ int err;
+ snd_ctl_arcam_av_t *arcam_av = NULL;
+
+ snd_config_for_each(it, next, conf) {
+ snd_config_t *n = snd_config_iterator_entry(it);
+ const char *id;
+ if (snd_config_get_id(n, &id) < 0)
+ continue;
+ if (strcmp(id, "comment") == 0 || strcmp(id, "type") == 0)
+ continue;
+ if (strcmp(id, "port") == 0) {
+ if (snd_config_get_string(n, &port) < 0) {
+ SNDERR("Invalid type for %s", id);
+ return -EINVAL;
+ }
+ continue;
+ }
+ if (strcmp(id, "zone") == 0) {
+ if (snd_config_get_integer(n, &zone) < 0) {
+ SNDERR("Invalid type for %s", id);
+ return -EINVAL;
+ }
+ if (zone < 1 || zone > 2) {
+ SNDERR("Invalid value for %s", id);
+ return -EINVAL;
+ }
+ continue;
+ }
+ SNDERR("Unknown field %s", id);
+ return -EINVAL;
+ }
+
+ if (access(port, R_OK | W_OK) < 0) {
+ err = -errno;
+ goto error;
+ }
+
+ arcam_av = calloc(1, sizeof(*arcam_av) + strlen(port) + 1);
+
+ if (!arcam_av)
+ return -ENOMEM;
+
+ arcam_av->ext.version = SND_CTL_EXT_VERSION;
+ arcam_av->ext.card_idx = 0;
+ strncpy(arcam_av->ext.id, arcam_av_name, sizeof(arcam_av->ext.id) - 1);
+ strncpy(arcam_av->ext.name, arcam_av_name, sizeof(arcam_av->ext.name) - 1);
+ strncpy(arcam_av->ext.longname, arcam_av_name,
sizeof(arcam_av->ext.longname) - 1);
+ strncpy(arcam_av->ext.mixername, arcam_av_name,
sizeof(arcam_av->ext.mixername) - 1);
+ arcam_av->ext.poll_fd = -1;
+ arcam_av->ext.callback = &arcam_av_ext_callback;
+ arcam_av->ext.private_data = arcam_av;
+
+ arcam_av->shm_id= -1;
+ arcam_av->port_fd = -1;
+ arcam_av->port = strcpy((char*)(arcam_av + 1), port);
+ arcam_av->zone = zone != 2 ? ARCAM_AV_ZONE1 : ARCAM_AV_ZONE2;
+
+ arcam_av->port_fd = arcam_av_connect(arcam_av->port);
+ if (arcam_av->port_fd < 0) {
+ err = -errno;
+ goto error;
+ }
+
+ if (arcam_av_server_start(&arcam_av->server, arcam_av->port)) {
+ err = -errno;
+ goto error;
+ }
+
+ arcam_av->ext.poll_fd = arcam_av_client(arcam_av->port);
+ if (arcam_av->ext.poll_fd < 0) {
+ err = -errno;
+ goto error;
+ }
+
+ fcntl(arcam_av->ext.poll_fd, F_SETFL, O_NONBLOCK);
+
+ arcam_av->global = arcam_av_state_attach(arcam_av->port);
+ if (!arcam_av->global) {
+ err = -errno;
+ goto error;
+ }
+
+ err = snd_ctl_ext_create(&arcam_av->ext, name, mode);
+ if (err < 0)
+ goto error;
+
+ *handlep = arcam_av->ext.handle;
+ return 0;
+
+ error:
+ perror("arcam_av()");
+ arcam_av_close(&arcam_av->ext);
+ return err;
+}
+
+SND_CTL_PLUGIN_SYMBOL(arcam_av);
diff -Nrup alsa-plugins-1.0.18-orig/configure.in
alsa-plugins-1.0.18/configure.in
--- alsa-plugins-1.0.18-orig/configure.in 2008-10-29 12:42:13.000000000 +0000
+++ alsa-plugins-1.0.18/configure.in 2009-01-02 22:25:12.000000000 +0000
@@ -140,6 +140,7 @@ AC_OUTPUT([
maemo/Makefile
doc/Makefile
usb_stream/Makefile
+ arcam-av/Makefile
])
dnl Show the build conditions
diff -Nrup alsa-plugins-1.0.18-orig/doc/Makefile.am
alsa-plugins-1.0.18/doc/Makefile.am
--- alsa-plugins-1.0.18-orig/doc/Makefile.am 2008-10-29 12:42:13.000000000
+0000
+++ alsa-plugins-1.0.18/doc/Makefile.am 2009-01-02 23:19:19.000000000 +0000
@@ -1,3 +1,3 @@
EXTRA_DIST = README-pcm-oss README-jack README-pulse README-maemo \
upmix.txt vdownmix.txt samplerate.txt a52.txt lavcrate.txt \
- speexrate.txt
+ speexrate.txt README-arcam-av
diff -Nrup alsa-plugins-1.0.18-orig/doc/README-arcam-av
alsa-plugins-1.0.18/doc/README-arcam-av
--- alsa-plugins-1.0.18-orig/doc/README-arcam-av 1970-01-01 01:00:00.000000000
+0100
+++ alsa-plugins-1.0.18/doc/README-arcam-av 2009-01-02 23:18:14.000000000
+0000
@@ -0,0 +1,29 @@
+Arcam AV Amplifier ALSA Control plugin
+======================================
+
+This plugin exposes the controls for an Arcam AV amplifier
+(see: http://www.arcam.co.uk/) as an ALSA mixer device.
+
+To use this plugin you will need to connect the amplifier
+to the PC using an RS-232 null-modem cable and use the
+following ALSA configuration:
+
+ ctl.arcam_av {
+ type arcam_av
+ port /dev/ttyS0
+ }
+
+The "port" parameter is required and indicates the serial
+port to be used to communicate with the amplifier. There is
+an optional "zone" parameter, which accepts a value of
+either "1" (default) or "2", that indicates which of the
+amplifiers zones should be controlled.
+
+NB: You must ensure that any user accounts that are to use
+this plugin have both read and write access rights for the
+configured serial port.
+
+This plugin was developed and tested using an Arcam AVR 300
+amplifier. I believe most Arcam amplifiers use a sufficiently
+similar control system to be compatible with this plugin but
+your mileage may vary.
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