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authorMax Kellermann <max@duempel.org>2009-11-06 18:55:26 +0100
committerMax Kellermann <max@duempel.org>2009-11-06 18:55:26 +0100
commit2598dd510910d3a39eb665216760a705c26ccf50 (patch)
tree5a4ef3cc7a68e2c45f3bf06f0b4e0a59a949b291 /src/output/jack_output_plugin.c
parentfac6e9ecdba34f98e55644010527c0b8f960e98e (diff)
downloadmpd-2598dd510910d3a39eb665216760a705c26ccf50.tar.gz
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output/jack: dynamic destination port list
Support up to 16 configured destination ports, that should really be enough for everybody.
Diffstat (limited to 'src/output/jack_output_plugin.c')
-rw-r--r--src/output/jack_output_plugin.c96
1 files changed, 71 insertions, 25 deletions
diff --git a/src/output/jack_output_plugin.c b/src/output/jack_output_plugin.c
index d4aea0f67..14493715f 100644
--- a/src/output/jack_output_plugin.c
+++ b/src/output/jack_output_plugin.c
@@ -36,6 +36,10 @@
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "jack"
+enum {
+ MAX_PORTS = 16,
+};
+
static const size_t sample_size = sizeof(jack_default_audio_sample_t);
static const char *const port_names[2] = {
@@ -52,7 +56,8 @@ struct jack_data {
/* configuration */
- char *destination_ports[2];
+ char *destination_ports[MAX_PORTS];
+ unsigned num_destination_ports;
size_t ringbuffer_size;
@@ -217,6 +222,35 @@ mpd_jack_test_default_device(void)
return true;
}
+static unsigned
+parse_port_list(int line, const char *source, char **dest, GError **error_r)
+{
+ char **list = g_strsplit(source, ",", 0);
+ unsigned n = 0;
+
+ for (n = 0; list[n] != NULL; ++n) {
+ if (n >= MAX_PORTS) {
+ g_set_error(error_r, jack_output_quark(), 0,
+ "too many port names in line %d",
+ line);
+ return 0;
+ }
+
+ dest[n] = list[n];
+ }
+
+ g_free(list);
+
+ if (n == 0) {
+ g_set_error(error_r, jack_output_quark(), 0,
+ "at least one port name expected in line %d",
+ line);
+ return 0;
+ }
+
+ return n;
+}
+
static void *
mpd_jack_init(G_GNUC_UNUSED const struct audio_format *audio_format,
const struct config_param *param, GError **error_r)
@@ -248,22 +282,13 @@ mpd_jack_init(G_GNUC_UNUSED const struct audio_format *audio_format,
}
if (value != NULL) {
- char **ports = g_strsplit(value, ",", 0);
-
- if (ports[0] == NULL || ports[1] == NULL || ports[2] != NULL) {
- g_set_error(error_r, jack_output_quark(), 0,
- "two port names expected in line %d",
- param->line);
+ jd->num_destination_ports =
+ parse_port_list(param->line, value,
+ jd->destination_ports, error_r);
+ if (jd->num_destination_ports == 0)
return NULL;
- }
-
- jd->destination_ports[0] = ports[0];
- jd->destination_ports[1] = ports[1];
-
- g_free(ports);
} else {
- jd->destination_ports[0] = NULL;
- jd->destination_ports[1] = NULL;
+ jd->num_destination_ports = 0;
}
jd->ringbuffer_size =
@@ -283,7 +308,7 @@ mpd_jack_finish(void *data)
{
struct jack_data *jd = data;
- for (unsigned i = 0; i < G_N_ELEMENTS(jd->destination_ports); ++i)
+ for (unsigned i = 0; i < jd->num_destination_ports; ++i)
g_free(jd->destination_ports[i]);
g_free(jd);
@@ -338,7 +363,8 @@ mpd_jack_stop(struct jack_data *jd)
static bool
mpd_jack_start(struct jack_data *jd, GError **error_r)
{
- const char *destination_ports[2], **jports;
+ const char *destination_ports[MAX_PORTS], **jports;
+ unsigned num_destination_ports;
assert(jd->client != NULL);
@@ -363,7 +389,7 @@ mpd_jack_start(struct jack_data *jd, GError **error_r)
return false;
}
- if (jd->destination_ports[1] == NULL) {
+ if (jd->num_destination_ports == 0) {
/* no output ports were configured - ask libjack for
defaults */
jports = jack_get_ports(jd->client, NULL, NULL,
@@ -375,19 +401,39 @@ mpd_jack_start(struct jack_data *jd, GError **error_r)
return false;
}
- destination_ports[0] = jports[0];
- destination_ports[1] = jports[1] != NULL ? jports[1] : jports[0];
-
- g_debug("destination_ports: %s %s", jports[0], jports[1]);
+ assert(*jports != NULL);
+
+ for (num_destination_ports = 0;
+ num_destination_ports < MAX_PORTS &&
+ jports[num_destination_ports] != NULL;
+ ++num_destination_ports) {
+ g_debug("destination_port[%u] = '%s'\n",
+ num_destination_ports,
+ jports[num_destination_ports]);
+ destination_ports[num_destination_ports] =
+ jports[num_destination_ports];
+ }
} else {
/* use the configured output ports */
- destination_ports[0] = jd->destination_ports[0];
- destination_ports[1] = jd->destination_ports[1];
+ num_destination_ports = jd->num_destination_ports;
+ memcpy(destination_ports, jd->destination_ports,
+ num_destination_ports * sizeof(*destination_ports));
jports = NULL;
}
+ assert(num_destination_ports > 0);
+
+ if (jd->audio_format.channels == 2 && num_destination_ports == 1) {
+ /* mix stereo signal on one speaker */
+
+ destination_ports[1] = destination_ports[0];
+ num_destination_ports = 2;
+ }
+
+ assert(jd->audio_format.channels <= num_destination_ports);
+
for (unsigned i = 0; i < jd->audio_format.channels; ++i) {
int ret;
@@ -406,7 +452,7 @@ mpd_jack_start(struct jack_data *jd, GError **error_r)
}
}
- if (jd->audio_format.channels == 1) {
+ if (jd->audio_format.channels == 1 && num_destination_ports == 2) {
/* mono input file: connect the one source channel to
the both destination channels */
int ret;