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freeswitch/src/mod/applications/mod_ladspa/mod_ladspa.c

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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
*
* mod_ladspa.c -- LADSPA
*
*/
#include <switch.h>
#include "ladspa.h"
#include "utils.h"
/* Prototypes */
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_ladspa_shutdown);
SWITCH_MODULE_RUNTIME_FUNCTION(mod_ladspa_runtime);
SWITCH_MODULE_LOAD_FUNCTION(mod_ladspa_load);
/* SWITCH_MODULE_DEFINITION(name, load, shutdown, runtime)
* Defines a switch_loadable_module_function_table_t and a static const char[] modname
*/
SWITCH_MODULE_DEFINITION(mod_ladspa, mod_ladspa_load, mod_ladspa_shutdown, NULL);
#define MAX_INDEX 256
typedef struct {
switch_core_session_t *session;
char *plugin_name;
char *label_name;
void *library_handle;
const LADSPA_Descriptor *ldesc;
LADSPA_Handle handle;
LADSPA_Data config[MAX_INDEX];
int num_idx;
char *str_config[MAX_INDEX];
int str_idx;
uint8_t has_config[MAX_INDEX];
int skip;
LADSPA_Data in_buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
LADSPA_Data file_buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
LADSPA_Data out_buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
LADSPA_Data out_ports[MAX_INDEX];
switch_file_handle_t fh;
} switch_ladspa_t;
int check_range(const LADSPA_Descriptor *ldesc, int i, LADSPA_Data val)
{
if (ldesc->PortRangeHints[i].LowerBound && ldesc->PortRangeHints[i].UpperBound &&
(val < ldesc->PortRangeHints[i].LowerBound || val > ldesc->PortRangeHints[i].UpperBound)) {
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_ERROR, "Param %f out of bounds %f-%f\n",
val, ldesc->PortRangeHints[i].LowerBound, ldesc->PortRangeHints[i].UpperBound);
return 0;
}
return 1;
}
int find_default(const LADSPA_Descriptor *ldesc, int i, LADSPA_Data *ptr)
{
LADSPA_Data dftval = 0;
int fail = 0;
LADSPA_PortRangeHintDescriptor port_hint = ldesc->PortRangeHints[i].HintDescriptor;
switch (port_hint & LADSPA_HINT_DEFAULT_MASK) {
case LADSPA_HINT_DEFAULT_NONE:
break;
case LADSPA_HINT_DEFAULT_MINIMUM:
dftval = ldesc->PortRangeHints[i].LowerBound;
break;
case LADSPA_HINT_DEFAULT_LOW:
if (LADSPA_IS_HINT_LOGARITHMIC(port_hint)) {
dftval = exp(log(ldesc->PortRangeHints[i].LowerBound)
* 0.75 + log(ldesc->PortRangeHints[i].UpperBound)
* 0.25);
} else {
dftval = (ldesc->PortRangeHints[i].LowerBound * 0.75 + ldesc->PortRangeHints[i].UpperBound * 0.25);
}
break;
case LADSPA_HINT_DEFAULT_MIDDLE:
if (LADSPA_IS_HINT_LOGARITHMIC(port_hint)) {
dftval = sqrt(ldesc->PortRangeHints[i].LowerBound * ldesc->PortRangeHints[i].UpperBound);
} else {
dftval = 0.5 * (ldesc->PortRangeHints[i].LowerBound + ldesc->PortRangeHints[i].UpperBound);
}
break;
case LADSPA_HINT_DEFAULT_HIGH:
if (LADSPA_IS_HINT_LOGARITHMIC(port_hint)) {
dftval = exp(log(ldesc->PortRangeHints[i].LowerBound)
* 0.25 + log(ldesc->PortRangeHints[i].UpperBound)
* 0.75);
} else {
dftval = (ldesc->PortRangeHints[i].LowerBound * 0.25 + ldesc->PortRangeHints[i].UpperBound * 0.75);
}
break;
case LADSPA_HINT_DEFAULT_MAXIMUM:
dftval = ldesc->PortRangeHints[i].UpperBound;
break;
case LADSPA_HINT_DEFAULT_0:
dftval = 0;
break;
case LADSPA_HINT_DEFAULT_1:
dftval = 1;
break;
case LADSPA_HINT_DEFAULT_100:
dftval = 100;
break;
case LADSPA_HINT_DEFAULT_440:
dftval = 440;
break;
default:
fail = 1;
break;
}
if (!fail) {
*ptr = dftval;
}
return !fail;
}
static void dump_info(const LADSPA_Descriptor *ldesc)
{
int i = 0;
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Plugin Name: \"%s\"\n", ldesc->Name);
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Plugin Label: \"%s\"\n", ldesc->Label);
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Plugin Unique ID: %lu\n", ldesc->UniqueID);
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Maker: \"%s\"\n", ldesc->Maker);
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Copyright: \"%s\"\n", ldesc->Copyright);
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Must Run Real-Time: ");
if (LADSPA_IS_REALTIME(ldesc->Properties))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Yes\n");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "No\n");
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Has activate() Function: ");
if (ldesc->activate != NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Yes\n");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "No\n");
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Has deactivate() Function: ");
if (ldesc->deactivate != NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Yes\n");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "No\n");
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Has run_adding() Function: ");
if (ldesc->run_adding != NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Yes\n");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "No\n");
if (ldesc->instantiate == NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: PLUGIN HAS NO INSTANTIATE FUNCTION.\n");
if (ldesc->connect_port == NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: PLUGIN HAS NO CONNECT_PORT FUNCTION.\n");
if (ldesc->run == NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: PLUGIN HAS NO RUN FUNCTION.\n");
if (ldesc->run_adding != NULL && ldesc->set_run_adding_gain == NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: PLUGIN HAS RUN_ADDING FUNCTION BUT " "NOT SET_RUN_ADDING_GAIN.\n");
if (ldesc->run_adding == NULL && ldesc->set_run_adding_gain != NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: PLUGIN HAS SET_RUN_ADDING_GAIN FUNCTION BUT " "NOT RUN_ADDING.\n");
if (ldesc->cleanup == NULL)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: PLUGIN HAS NO CLEANUP FUNCTION.\n");
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Environment: ");
if (LADSPA_IS_HARD_RT_CAPABLE(ldesc->Properties))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Normal or Hard Real-Time\n");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Normal\n");
if (LADSPA_IS_INPLACE_BROKEN(ldesc->Properties))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "This plugin cannot use in-place processing. " "It will not work with all hosts.\n");
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Ports:");
if (ldesc->PortCount == 0)
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "\tERROR: PLUGIN HAS NO PORTS.\n");
for (i = 0; i < ldesc->PortCount; i++) {
LADSPA_Data dft = 0.0f;
int found = 0;
if (LADSPA_IS_PORT_CONTROL(ldesc->PortDescriptors[i])) {
found = find_default(ldesc, i, &dft);
}
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "\n \"%s\" ", ldesc->PortNames[i]);
if (LADSPA_IS_PORT_INPUT(ldesc->PortDescriptors[i])
&& LADSPA_IS_PORT_OUTPUT(ldesc->PortDescriptors[i]))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: INPUT AND OUTPUT");
else if (LADSPA_IS_PORT_INPUT(ldesc->PortDescriptors[i]))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "input");
else if (LADSPA_IS_PORT_OUTPUT(ldesc->PortDescriptors[i]))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "output");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "ERROR: NEITHER INPUT NOR OUTPUT");
if (LADSPA_IS_PORT_CONTROL(ldesc->PortDescriptors[i])
&& LADSPA_IS_PORT_AUDIO(ldesc->PortDescriptors[i]))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, ", ERROR: CONTROL AND AUDIO");
else if (LADSPA_IS_PORT_CONTROL(ldesc->PortDescriptors[i]))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, ", control");
else if (LADSPA_IS_PORT_AUDIO(ldesc->PortDescriptors[i]))
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, ", audio");
else
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, ", ERROR: NEITHER CONTROL NOR AUDIO");
if (LADSPA_IS_PORT_CONTROL(ldesc->PortDescriptors[i])) {
if (found) {
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "\n RANGE: %f-%f DEFAULT: %f\n",
ldesc->PortRangeHints[i].LowerBound, ldesc->PortRangeHints[i].UpperBound, dft);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "\n RANGE: %f-%f DEFAULT: none.\n",
ldesc->PortRangeHints[i].LowerBound, ldesc->PortRangeHints[i].UpperBound);
}
}
}
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "\n\n");
}
static switch_bool_t ladspa_callback(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
switch_ladspa_t *pvt = (switch_ladspa_t *) user_data;
//switch_frame_t *frame = NULL;
switch_channel_t *channel = switch_core_session_get_channel(pvt->session);
switch (type) {
case SWITCH_ABC_TYPE_INIT:
{
switch_codec_implementation_t read_impl = { 0 };
LADSPA_PortDescriptor port_desc;
int i = 0, j = 0, k = 0, str_idx = 0;
switch_core_session_get_read_impl(pvt->session, &read_impl);
if (!(pvt->library_handle = loadLADSPAPluginLibrary(pvt->plugin_name))) {
return SWITCH_FALSE;
}
if (!(pvt->ldesc = findLADSPAPluginDescriptor(pvt->library_handle, pvt->plugin_name, pvt->label_name))) {
return SWITCH_FALSE;
}
pvt->handle = pvt->ldesc->instantiate(pvt->ldesc, read_impl.actual_samples_per_second);
dump_info(pvt->ldesc);
for (i = 0; i < pvt->ldesc->PortCount; i++) {
port_desc = pvt->ldesc->PortDescriptors[i];
if (LADSPA_IS_PORT_CONTROL(port_desc) && LADSPA_IS_PORT_INPUT(port_desc)) {
LADSPA_Data dft = 0.0f;
int found = find_default(pvt->ldesc, i, &dft);
if (found && !pvt->has_config[j]) {
pvt->config[j] = dft;
pvt->has_config[j] = 1;
}
if (pvt->has_config[j]) {
if (!check_range(pvt->ldesc, i, pvt->config[j])) {
pvt->config[j] = dft;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_WARNING, "FALLING TO DEFAULT PARAM %d [%s] (%f)\n",
j+1,
pvt->ldesc->PortNames[i],
pvt->config[j]);
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_DEBUG, "ADDING PARAM %d [%s] (%f)\n",
j+1,
pvt->ldesc->PortNames[i],
pvt->config[j]);
pvt->ldesc->connect_port(pvt->handle, i, &pvt->config[j++]);
usleep(10000);
}
}
if (LADSPA_IS_PORT_INPUT(port_desc) && LADSPA_IS_PORT_AUDIO(port_desc)) {
int mapped = 0;
if (pvt->str_idx && !zstr(pvt->str_config[str_idx])) {
if (!strcasecmp(pvt->str_config[str_idx], "none")) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_DEBUG, "CONNECT NOTHING to port: %s\n",
pvt->ldesc->PortNames[i]
);
mapped = 1;
} else if (!strncasecmp(pvt->str_config[str_idx], "file:", 5)) {
char *file = pvt->str_config[str_idx] + 5;
if (switch_test_flag((&pvt->fh), SWITCH_FILE_OPEN)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session),
SWITCH_LOG_ERROR, "CAN'T CONNECT FILE [%s] File already mapped\n", file);
} else {
if (switch_core_file_open(&pvt->fh,
file,
read_impl.number_of_channels,
read_impl.actual_samples_per_second,
SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT, NULL) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_ERROR, "Cannot open file: %s\n", file);
return SWITCH_FALSE;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_DEBUG, "CONNECT FILE [%s] to port: %s\n",
file,
pvt->ldesc->PortNames[i]
);
pvt->ldesc->connect_port(pvt->handle, i, pvt->file_buf);
mapped = 1;
}
}
str_idx++;
}
if (!mapped) {
pvt->ldesc->connect_port(pvt->handle, i, pvt->in_buf);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_DEBUG, "CONNECT CHANNEL AUDIO to port: %s\n",
pvt->ldesc->PortNames[i]
);
}
}
if (LADSPA_IS_PORT_OUTPUT(port_desc)) {
if (LADSPA_IS_PORT_AUDIO(port_desc)) {
pvt->ldesc->connect_port(pvt->handle, i, pvt->out_buf);
} else if (k < MAX_INDEX) {
pvt->ldesc->connect_port(pvt->handle, i, &pvt->out_ports[k++]);
}
}
}
}
break;
case SWITCH_ABC_TYPE_CLOSE:
{
if (switch_test_flag((&pvt->fh), SWITCH_FILE_OPEN)) {
switch_core_file_close(&pvt->fh);
}
if (pvt->handle && pvt->ldesc) {
pvt->ldesc->cleanup(pvt->handle);
}
if (pvt->library_handle) {
unloadLADSPAPluginLibrary(pvt->library_handle);
}
}
break;
case SWITCH_ABC_TYPE_WRITE_REPLACE:
case SWITCH_ABC_TYPE_READ_REPLACE:
{
switch_frame_t *rframe;
int16_t *slin, abuf[SWITCH_RECOMMENDED_BUFFER_SIZE] = { 0 };
switch_size_t olen = 0;
if (type == SWITCH_ABC_TYPE_READ_REPLACE) {
rframe = switch_core_media_bug_get_read_replace_frame(bug);
} else {
rframe = switch_core_media_bug_get_write_replace_frame(bug);
}
slin = rframe->data;
if (switch_channel_media_ready(channel)) {
switch_short_to_float(slin, pvt->in_buf, rframe->samples);
if (switch_test_flag((&pvt->fh), SWITCH_FILE_OPEN)) {
olen = rframe->samples;
if (switch_core_file_read(&pvt->fh, abuf, &olen) != SWITCH_STATUS_SUCCESS) {
switch_codec_implementation_t read_impl = { 0 };
char *file = switch_core_session_strdup(pvt->session, pvt->fh.file_path);
switch_core_session_get_read_impl(pvt->session, &read_impl);
switch_core_file_close(&pvt->fh);
if (switch_core_file_open(&pvt->fh,
file,
read_impl.number_of_channels,
read_impl.actual_samples_per_second,
SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT, NULL) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_ERROR, "Cannot open file: %s\n", file);
return SWITCH_FALSE;
}
olen = rframe->samples;
if (switch_core_file_read(&pvt->fh, abuf, &olen) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(pvt->session), SWITCH_LOG_ERROR, "Cannot READ file: %s\n", file);
return SWITCH_FALSE;
}
}
switch_short_to_float(abuf, pvt->file_buf, olen);
}
pvt->ldesc->run(pvt->handle, rframe->samples);
switch_float_to_short(pvt->out_buf, slin, rframe->samples);
}
if (type == SWITCH_ABC_TYPE_READ_REPLACE) {
switch_core_media_bug_set_read_replace_frame(bug, rframe);
} else {
switch_core_media_bug_set_write_replace_frame(bug, rframe);
}
if (pvt->skip && !--pvt->skip) {
return SWITCH_FALSE;
}
}
break;
case SWITCH_ABC_TYPE_WRITE:
default:
break;
}
return SWITCH_TRUE;
}
switch_status_t stop_ladspa_session(switch_core_session_t *session)
{
switch_media_bug_t *bug;
switch_channel_t *channel = switch_core_session_get_channel(session);
if ((bug = switch_channel_get_private(channel, "ladspa"))) {
switch_channel_set_private(channel, "ladspa", NULL);
switch_core_media_bug_remove(session, &bug);
return SWITCH_STATUS_SUCCESS;
}
return SWITCH_STATUS_FALSE;
}
switch_status_t ladspa_session(switch_core_session_t *session, const char *flags, const char *plugin_name, const char *label, const char *params)
{
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_media_bug_t *bug;
switch_status_t status;
switch_ladspa_t *pvt = { 0 };
switch_codec_implementation_t read_impl = { 0 };
int i, bflags = SMBF_READ_REPLACE | SMBF_ANSWER_REQ;
char *pstr;
int argc;
char *argv[50];
char *dparams = NULL;
if (zstr(plugin_name)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s INVALID PLUGIN\n", switch_channel_get_name(channel));
return SWITCH_STATUS_FALSE;
}
if (zstr(flags)) {
flags = "r";
}
if (strchr(flags, 'w')) {
bflags = SMBF_WRITE_REPLACE;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "FLAGS: %s PLUGIN: %s LABEL: %s PARAMS: %s\n",
flags, plugin_name, label, params);
switch_core_session_get_read_impl(session, &read_impl);
pvt = switch_core_session_alloc(session, sizeof(*pvt));
pvt->session = session;
if (!zstr(label)) {
pvt->label_name = switch_core_session_strdup(session, label);
} else {
char *p;
pvt->label_name = switch_core_session_strdup(session, plugin_name);
if ((p = strrchr(pvt->label_name, '.'))) {
*p = '\0';
}
}
if (strstr(plugin_name, ".so")) {
pvt->plugin_name = switch_core_session_strdup(session, plugin_name);
} else {
pvt->plugin_name = switch_core_session_sprintf(session, "%s.so", plugin_name);
}
dparams = switch_core_session_strdup(session, params);
argc = switch_split(dparams, ' ', argv);
for (i = 0; i < argc; i++) {
if (switch_is_number(argv[i])) {
if (pvt->num_idx < MAX_INDEX) {
pvt->config[pvt->num_idx] = atof(argv[i]);
pvt->has_config[pvt->num_idx] = 1;
pvt->num_idx++;
}
} else {
if (pvt->str_idx < MAX_INDEX) {
pvt->str_config[pvt->str_idx++] = switch_core_session_strdup(session, argv[i]);
}
}
}
if (switch_channel_pre_answer(channel) != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_FALSE;
}
pstr = switch_core_session_sprintf(session, "%s|%s|%s|%s", flags, plugin_name, label, params);
if ((status = switch_core_media_bug_add(session, "ladspa", pstr,
ladspa_callback, pvt, 0, bflags | SMBF_NO_PAUSE, &bug)) != SWITCH_STATUS_SUCCESS) {
return status;
}
switch_channel_set_private(channel, "ladspa", bug);
return SWITCH_STATUS_SUCCESS;
}
static void ladspa_parse(switch_core_session_t *session, const char *data)
{
char *argv[5] = { 0 };
char *lbuf;
if (data) {
lbuf = strdup(data);
switch_separate_string(lbuf, '|', argv, (sizeof(argv) / sizeof(argv[0])));
ladspa_session(session, argv[0], argv[1], argv[2], argv[3]);
free(lbuf);
}
}
#define APP_SYNTAX "<flags>|<plugin>|<label>|<params>"
SWITCH_STANDARD_APP(ladspa_run_function)
{
ladspa_parse(session, data);
}
#define API_SYNTAX "<uuid> [start|stop] <flags>|<plugin>|<label>|<params>"
SWITCH_STANDARD_API(ladspa_api)
{
char *uuid = NULL;
char *data = NULL;
char *p, *action;
switch_core_session_t *ksession = NULL;
if (!cmd) {
stream->write_function(stream, "-ERR Operation Failed\n");
goto done;
}
data = strdup(cmd);
if ((p = strchr(data, ' '))) {
uuid = data;
*p++ = '\0';
if (!(ksession = switch_core_session_locate(uuid))) {
stream->write_function(stream, "-ERR non-existant UUID\n");
goto done;
}
if ((action = strstr(cmd, "stop"))) {
stop_ladspa_session(ksession);
switch_core_session_rwunlock(ksession);
stream->write_function(stream, "+OK\n");
goto done;
} else if ((action = strstr(cmd, "start"))) {
// Advance past 'start' conditional keyword and move on
p += 5 * sizeof(char);
*p++ = '\0';
switch_log_printf(SWITCH_CHANNEL_LOG_CLEAN, SWITCH_LOG_DEBUG, "Tried to remove 'start' and now the string is \"%s\"\n", p);
}
ladspa_parse(ksession, p);
stream->write_function(stream, "+OK\n");
} else {
stream->write_function(stream, "-ERR Usage %s\n", API_SYNTAX);
}
done:
switch_safe_free(data);
return SWITCH_STATUS_SUCCESS;
}
/* Macro expands to: switch_status_t mod_ladspa_load(switch_loadable_module_interface_t **module_interface, switch_memory_pool_t *pool) */
SWITCH_MODULE_LOAD_FUNCTION(mod_ladspa_load)
{
switch_application_interface_t *app_interface;
switch_api_interface_t *api_interface;
char *path = getenv("LADSPA_PATH");
if (zstr(path)) {
if (switch_directory_exists("/usr/lib64/ladspa/", pool) == SWITCH_STATUS_SUCCESS) {
setenv("LADSPA_PATH", "/usr/lib64/ladspa/:/usr/local/lib/ladspa", 1);
} else if (switch_directory_exists("/usr/lib/ladspa/", pool) == SWITCH_STATUS_SUCCESS) {
setenv("LADSPA_PATH", "/usr/lib/ladspa/:/usr/local/lib/ladspa", 1);
} else if (switch_directory_exists("/usr/local/lib/ladspa/", pool) == SWITCH_STATUS_SUCCESS) {
setenv("LADSPA_PATH", "/usr/local/lib/ladspa", 1);
}
}
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_APP(app_interface, "ladspa_run", "ladspa_run", NULL, ladspa_run_function, APP_SYNTAX, SAF_NONE);
SWITCH_ADD_API(api_interface, "uuid_ladspa", "ladspa", ladspa_api, API_SYNTAX);
switch_console_set_complete("add uuid_ladspa ::console::list_uuid");
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
/*
Called when the system shuts down
Macro expands to: switch_status_t mod_ladspa_shutdown() */
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_ladspa_shutdown)
{
/* Cleanup dynamically allocated config settings */
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet
*/
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