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emul_rsound.c
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emul_rsound.c
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//emul_rsound.c:
/*
* Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010
*
* This file is part of roard a part of RoarAudio,
* a cross-platform sound system for both, home and professional use.
* See README for details.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3
* as published by the Free Software Foundation.
*
* RoarAudio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "roard.h"
#ifndef ROAR_WITHOUT_DCOMP_EMUL_RSOUND
static int emul_rsound_lastcon = -1;
int emul_rsound_new_client (int client, int data);
int emul_rsound_on_connect (int fh, struct roard_listen * lsock) {
int oldfh = emul_rsound_lastcon;
int client;
union {
int32_t i[4];
char c[16];
} buf;
// TODO: add error handling
roar_socket_nonblock(fh, ROAR_SOCKET_NONBLOCK);
if ( emul_rsound_lastcon == -1 ) {
emul_rsound_lastcon = fh;
return -2;
} else {
emul_rsound_lastcon = -1;
client = clients_new();
if ( client == -1 )
return -1;
if ( clients_set_fh(client, fh) == -1 ) {
ROAR_ERR("net_get_new_client(void): Can not set client's fh");
clients_delete(client);
close(oldfh);
close(fh);
ROAR_DBG("net_get_new_client(void) = -1");
return -1;
}
if ( emul_rsound_new_client(client, oldfh) == -1 ) {
clients_delete(client);
return -1;
}
// LATENCY:
// we currently don't know what we need to set here.
buf.i[0] = ROAR_HOST2NET32(0);
// block size used by roard.
buf.i[1] = ROAR_HOST2NET32(ROAR_OUTPUT_BUFFER_SAMPLES * roar_info2framesize(g_sa) / 8);
// Magic zeros to enable protocol handling.
// (RSD_CONN_PROTO)
buf.i[2] = ROAR_HOST2NET32(0);
buf.i[3] = ROAR_HOST2NET32(0);
ROAR_NETWORK_WRITE(oldfh, buf.c, sizeof(buf.c));
return client;
}
return -1;
}
int emul_rsound_new_client (int client, int data) {
struct roar_stream_server * ss;
struct roar_stream * s;
struct roar_client * c;
int stream;
if ( clients_get(client, &c) == -1 ) {
return -1;
}
if ((stream = streams_new()) == -1 ) {
clients_delete(client);
return -1;
}
if ( streams_get(stream, &ss) == -1 ) {
streams_delete(stream);
clients_delete(client);
return -1;
}
s = ROAR_STREAM(ss);
if ( client_stream_add(client, stream) == -1 ) {
streams_delete(stream);
clients_delete(client);
return -1;
}
memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info));
ss->codec_orgi = s->info.codec = ROAR_CODEC_RIFF_WAVE;
if ( streams_set_dir(stream, ROAR_DIR_PLAY, 1) == -1 ) {
clients_delete(client);
return -1;
}
/*
if ( client_stream_exec(client, stream) == -1 ) {
clients_delete(client);
return -1;
}
*/
if ( client_stream_set_fh(client, stream, data) == -1 ) {
streams_delete(stream);
clients_delete(client);
return -1;
}
return 0;
}
int emul_rsound_vrecv_msg(struct emul_rsound_msg * msg, struct roar_vio_calls * vio) {
struct roar_vio_select select;
struct roar_vio_selecttv tv = {
.sec = 0,
.nsec = 0
};
ssize_t ret;
int num;
if ( msg == NULL || vio == NULL )
return -1;
ROAR_VIO_SELECT_SETVIO(&select, vio, ROAR_VIO_SELECT_READ);
if ( roar_vio_select(&select, 1, &tv, NULL) == -1 )
return -1;
if ( !(select.eventsa & ROAR_VIO_SELECT_READ) ) {
errno = EAGAIN;
return -1;
}
ret = roar_vio_read(vio, msg->header, EMUL_RSOUND_MSG_HEADER_LEN);
if ( ret != EMUL_RSOUND_MSG_HEADER_LEN )
return -1;
msg->header[ret] = 0;
if ( msg->header[0] != 'R' || msg->header[1] != 'S' || msg->header[2] != 'D' )
return -1;
if ( sscanf(&(msg->header[3]), "%5d", &num) != 1 )
return -1;
if ( num > EMUL_RSOUND_MSG_DATA_LEN )
return -1;
msg->datalen = num;
ret = roar_vio_read(vio, msg->data, num);
if ( ret != (ssize_t)num )
return -1;
msg->data[num] = 0;
msg->datasp = msg->data;
msg->dataslen = msg->datalen;
for (num = 0; msg->data[num] == ' '; num++) {
msg->datasp++;
msg->dataslen--;
}
return 0;
}
int emul_rsound_vsend_msg(struct emul_rsound_msg * msg, struct roar_vio_calls * vio) {
struct roar_vio_select select;
struct roar_vio_selecttv tv = {
.sec = 0,
.nsec = 0
};
ssize_t ret;
if ( msg == NULL || vio == NULL )
return -1;
ROAR_VIO_SELECT_SETVIO(&select, vio, ROAR_VIO_SELECT_WRITE);
if ( roar_vio_select(&select, 1, &tv, NULL) == -1 )
return -1;
if ( !(select.eventsa & ROAR_VIO_SELECT_WRITE) ) {
errno = EAGAIN;
return -1;
}
snprintf(msg->header, EMUL_RSOUND_MSG_HEADER_LEN+1, "RSD%5d", (int)msg->datalen);
ret = roar_vio_write(vio, msg->header, EMUL_RSOUND_MSG_HEADER_LEN);
if ( ret != EMUL_RSOUND_MSG_HEADER_LEN )
return -1;
ret = roar_vio_write(vio, msg->data, msg->datalen);
if ( ret != (ssize_t)msg->datalen )
return -1;
return 0;
}
int emul_rsound_check_client(int client, struct roar_vio_calls * vio) {
struct roar_vio_calls rvio;
struct emul_rsound_msg msg;
struct roar_client * c;
struct roar_stream_server * ss;
int streamid;
int i;
ssize_t ptr;
size_t max_len;
if ( vio == NULL ) {
vio = &rvio;
roar_vio_open_fh_socket(vio, clients_get_fh(client));
}
// we get called in a loop, in case this fails no problem, just
// return -1, caller will delete us in case of real error.
if ( emul_rsound_vrecv_msg(&msg, vio) == -1 )
return -1;
if ( !strncmp(msg.datasp, "INFO", 4) ) {
if ( clients_get(client, &c) == -1 )
return clients_delete(client);
streamid = -1;
for (i = 0; i < ROAR_CLIENTS_MAX_STREAMS_PER_CLIENT; i++)
if ( c->streams[i] > streamid )
streamid = c->streams[i];
if ( streamid == -1 )
return clients_delete(client);
if ( streams_get(streamid, &ss) == -1 )
return clients_delete(client);
ptr = roar_info2samplesize(&(ROAR_STREAM(ss)->info));
if ( ptr == -1 )
return clients_delete(client);
ptr *= ROAR_STREAM(ss)->pos;
ptr /= 8; // bits -> bytes
i = snprintf(msg.data+msg.datalen, EMUL_RSOUND_MSG_DATA_LEN - msg.datalen, " %lld", (long long int)ptr);
msg.datalen += i;
return emul_rsound_vsend_msg(&msg, vio);
} else if ( !strncmp(msg.datasp, "NULL", 4) ) {
// NULL is simular to NOOP
} else if ( !strncmp(msg.datasp, "STOP", 4) ) {
// This is quit.
return clients_delete(client);
} else if ( !strncmp(msg.datasp, "IDENTITY ", 9) ) {
if ( msg.dataslen < (8+1+1) )
return clients_delete(client);
msg.datasp += 9;
msg.dataslen -= 9;
if ( clients_get(client, &c) == -1 )
return clients_delete(client);
max_len = msg.dataslen < (ROAR_BUFFER_NAME-1) ? msg.dataslen : (ROAR_BUFFER_NAME-1);
strncpy(c->name, msg.datasp, max_len);
c->name[max_len] = 0;
} else if ( !strncmp(msg.datasp, "CLOSECTL", 9) ) {
if ( clients_get(client, &c) == -1 )
return clients_delete(client);
strncpy(msg.data, " CLOSECTL OK", EMUL_RSOUND_MSG_DATA_LEN);
msg.datalen = 12; //strlen(" CLOSECTL OK");
if ( emul_rsound_vsend_msg(&msg, vio) == -1 )
return clients_delete(client);
streamid = c->streams[0];
if ( client_stream_exec(client, streamid) == -1 )
return clients_delete(client);
return 0;
} else {
// Unknown command, kill the client.
return clients_delete(client);
}
return 0;
}
#endif
//ll