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-rw-r--r--src/pulsecore/source-output.c241
1 files changed, 241 insertions, 0 deletions
diff --git a/src/pulsecore/source-output.c b/src/pulsecore/source-output.c
new file mode 100644
index 00000000..230b416d
--- /dev/null
+++ b/src/pulsecore/source-output.c
@@ -0,0 +1,241 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ PulseAudio 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 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <pulse/utf8.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core-subscribe.h>
+#include <pulsecore/log.h>
+
+#include "source-output.h"
+
+#define CHECK_VALIDITY_RETURN_NULL(condition) \
+do {\
+if (!(condition)) \
+ return NULL; \
+} while (0)
+
+pa_source_output* pa_source_output_new(
+ pa_source *s,
+ const char *driver,
+ const char *name,
+ const pa_sample_spec *spec,
+ const pa_channel_map *map,
+ int resample_method) {
+
+ pa_source_output *o;
+ pa_resampler *resampler = NULL;
+ int r;
+ char st[256];
+ pa_channel_map tmap;
+
+ assert(s);
+ assert(spec);
+ assert(s->state == PA_SOURCE_RUNNING);
+
+ CHECK_VALIDITY_RETURN_NULL(pa_sample_spec_valid(spec));
+
+ if (!map)
+ map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT);
+
+ CHECK_VALIDITY_RETURN_NULL(map && pa_channel_map_valid(map));
+ CHECK_VALIDITY_RETURN_NULL(map->channels == spec->channels);
+ CHECK_VALIDITY_RETURN_NULL(!driver || pa_utf8_valid(driver));
+ CHECK_VALIDITY_RETURN_NULL(pa_utf8_valid(name));
+
+ if (pa_idxset_size(s->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
+ pa_log(__FILE__": Failed to create source output: too many outputs per source.");
+ return NULL;
+ }
+
+ if (resample_method == PA_RESAMPLER_INVALID)
+ resample_method = s->core->resample_method;
+
+ if (!pa_sample_spec_equal(&s->sample_spec, spec) || !pa_channel_map_equal(&s->channel_map, map))
+ if (!(resampler = pa_resampler_new(&s->sample_spec, &s->channel_map, spec, map, s->core->memblock_stat, resample_method)))
+ return NULL;
+
+ o = pa_xnew(pa_source_output, 1);
+ o->ref = 1;
+ o->state = PA_SOURCE_OUTPUT_RUNNING;
+ o->name = pa_xstrdup(name);
+ o->driver = pa_xstrdup(driver);
+ o->owner = NULL;
+ o->source = s;
+ o->client = NULL;
+
+ o->sample_spec = *spec;
+ o->channel_map = *map;
+
+ o->push = NULL;
+ o->kill = NULL;
+ o->get_latency = NULL;
+ o->userdata = NULL;
+
+ o->resampler = resampler;
+
+ assert(s->core);
+ r = pa_idxset_put(s->core->source_outputs, o, &o->index);
+ assert(r == 0 && o->index != PA_IDXSET_INVALID);
+ r = pa_idxset_put(s->outputs, o, NULL);
+ assert(r == 0);
+
+ pa_sample_spec_snprint(st, sizeof(st), spec);
+ pa_log_info(__FILE__": created %u \"%s\" on %u with sample spec \"%s\"", o->index, o->name, s->index, st);
+
+ pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
+
+ return o;
+}
+
+void pa_source_output_disconnect(pa_source_output*o) {
+ assert(o);
+ assert(o->state != PA_SOURCE_OUTPUT_DISCONNECTED);
+ assert(o->source);
+ assert(o->source->core);
+
+ pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
+ pa_idxset_remove_by_data(o->source->outputs, o, NULL);
+
+ pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
+ o->source = NULL;
+
+ o->push = NULL;
+ o->kill = NULL;
+ o->get_latency = NULL;
+
+ o->state = PA_SOURCE_OUTPUT_DISCONNECTED;
+}
+
+static void source_output_free(pa_source_output* o) {
+ assert(o);
+
+ if (o->state != PA_SOURCE_OUTPUT_DISCONNECTED)
+ pa_source_output_disconnect(o);
+
+ pa_log_info(__FILE__": freed %u \"%s\"", o->index, o->name);
+
+ if (o->resampler)
+ pa_resampler_free(o->resampler);
+
+ pa_xfree(o->name);
+ pa_xfree(o->driver);
+ pa_xfree(o);
+}
+
+void pa_source_output_unref(pa_source_output* o) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ if (!(--o->ref))
+ source_output_free(o);
+}
+
+pa_source_output* pa_source_output_ref(pa_source_output *o) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ o->ref++;
+ return o;
+}
+
+
+void pa_source_output_kill(pa_source_output*o) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ if (o->kill)
+ o->kill(o);
+}
+
+void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
+ pa_memchunk rchunk;
+
+ assert(o);
+ assert(chunk);
+ assert(chunk->length);
+ assert(o->push);
+
+ if (o->state == PA_SOURCE_OUTPUT_CORKED)
+ return;
+
+ if (!o->resampler) {
+ o->push(o, chunk);
+ return;
+ }
+
+ pa_resampler_run(o->resampler, chunk, &rchunk);
+ if (!rchunk.length)
+ return;
+
+ assert(rchunk.memblock);
+ o->push(o, &rchunk);
+ pa_memblock_unref(rchunk.memblock);
+}
+
+void pa_source_output_set_name(pa_source_output *o, const char *name) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ pa_xfree(o->name);
+ o->name = pa_xstrdup(name);
+
+ pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
+}
+
+pa_usec_t pa_source_output_get_latency(pa_source_output *o) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ if (o->get_latency)
+ return o->get_latency(o);
+
+ return 0;
+}
+
+void pa_source_output_cork(pa_source_output *o, int b) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ if (o->state == PA_SOURCE_OUTPUT_DISCONNECTED)
+ return;
+
+ o->state = b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
+}
+
+pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
+ assert(o);
+ assert(o->ref >= 1);
+
+ if (!o->resampler)
+ return PA_RESAMPLER_INVALID;
+
+ return pa_resampler_get_method(o->resampler);
+}