summaryrefslogtreecommitdiffstats
path: root/src/pulsecore/sink-input.c
diff options
context:
space:
mode:
authorLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
committerLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
commitf44ba092651aa75055e109e04b4164ea92ae7fdc (patch)
tree5dfe076191b32946e78edf64d584d0a65f320013 /src/pulsecore/sink-input.c
parentdd21f11deda64e65a6f75817496534c2c9dda1a8 (diff)
big s/polyp/pulse/g
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pulsecore/sink-input.c')
-rw-r--r--src/pulsecore/sink-input.c386
1 files changed, 386 insertions, 0 deletions
diff --git a/src/pulsecore/sink-input.c b/src/pulsecore/sink-input.c
new file mode 100644
index 00000000..8590a0b1
--- /dev/null
+++ b/src/pulsecore/sink-input.c
@@ -0,0 +1,386 @@
+/* $Id$ */
+
+/***
+ 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/sample-util.h>
+#include <pulsecore/core-subscribe.h>
+#include <pulsecore/log.h>
+
+#include "sink-input.h"
+
+#define CONVERT_BUFFER_LENGTH 4096
+
+#define CHECK_VALIDITY_RETURN_NULL(condition) \
+do {\
+if (!(condition)) \
+ return NULL; \
+} while (0)
+
+pa_sink_input* pa_sink_input_new(
+ pa_sink *s,
+ const char *driver,
+ const char *name,
+ const pa_sample_spec *spec,
+ const pa_channel_map *map,
+ const pa_cvolume *volume,
+ int variable_rate,
+ int resample_method) {
+
+ pa_sink_input *i;
+ pa_resampler *resampler = NULL;
+ int r;
+ char st[256];
+ pa_channel_map tmap;
+ pa_cvolume tvol;
+
+ assert(s);
+ assert(spec);
+ assert(s->state == PA_SINK_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);
+ if (!volume)
+ volume = pa_cvolume_reset(&tvol, spec->channels);
+
+ CHECK_VALIDITY_RETURN_NULL(map && pa_channel_map_valid(map));
+ CHECK_VALIDITY_RETURN_NULL(volume && pa_cvolume_valid(volume));
+ CHECK_VALIDITY_RETURN_NULL(map->channels == spec->channels);
+ CHECK_VALIDITY_RETURN_NULL(volume->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->inputs) >= PA_MAX_INPUTS_PER_SINK) {
+ pa_log_warn(__FILE__": Failed to create sink input: too many inputs per sink.");
+ return NULL;
+ }
+
+ if (resample_method == PA_RESAMPLER_INVALID)
+ resample_method = s->core->resample_method;
+
+ if (variable_rate || !pa_sample_spec_equal(spec, &s->sample_spec) || !pa_channel_map_equal(map, &s->channel_map))
+ if (!(resampler = pa_resampler_new(spec, map, &s->sample_spec, &s->channel_map, s->core->memblock_stat, resample_method)))
+ return NULL;
+
+ i = pa_xnew(pa_sink_input, 1);
+ i->ref = 1;
+ i->state = PA_SINK_INPUT_RUNNING;
+ i->name = pa_xstrdup(name);
+ i->driver = pa_xstrdup(driver);
+ i->owner = NULL;
+ i->sink = s;
+ i->client = NULL;
+
+ i->sample_spec = *spec;
+ i->channel_map = *map;
+ i->volume = *volume;
+
+ i->peek = NULL;
+ i->drop = NULL;
+ i->kill = NULL;
+ i->get_latency = NULL;
+ i->underrun = NULL;
+ i->userdata = NULL;
+
+ i->playing = 0;
+
+ pa_memchunk_reset(&i->resampled_chunk);
+ i->resampler = resampler;
+
+ assert(s->core);
+ r = pa_idxset_put(s->core->sink_inputs, i, &i->index);
+ assert(r == 0 && i->index != PA_IDXSET_INVALID);
+ r = pa_idxset_put(s->inputs, i, 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\"", i->index, i->name, s->index, st);
+
+ pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
+
+ return i;
+}
+
+void pa_sink_input_disconnect(pa_sink_input *i) {
+ assert(i);
+ assert(i->state != PA_SINK_INPUT_DISCONNECTED);
+ assert(i->sink);
+ assert(i->sink->core);
+
+ pa_idxset_remove_by_data(i->sink->core->sink_inputs, i, NULL);
+ pa_idxset_remove_by_data(i->sink->inputs, i, NULL);
+
+ pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
+ i->sink = NULL;
+
+ i->peek = NULL;
+ i->drop = NULL;
+ i->kill = NULL;
+ i->get_latency = NULL;
+ i->underrun = NULL;
+
+ i->playing = 0;
+ i->state = PA_SINK_INPUT_DISCONNECTED;
+}
+
+static void sink_input_free(pa_sink_input* i) {
+ assert(i);
+
+ if (i->state != PA_SINK_INPUT_DISCONNECTED)
+ pa_sink_input_disconnect(i);
+
+ pa_log_info(__FILE__": freed %u \"%s\"", i->index, i->name);
+
+ if (i->resampled_chunk.memblock)
+ pa_memblock_unref(i->resampled_chunk.memblock);
+
+ if (i->resampler)
+ pa_resampler_free(i->resampler);
+
+ pa_xfree(i->name);
+ pa_xfree(i->driver);
+ pa_xfree(i);
+}
+
+void pa_sink_input_unref(pa_sink_input *i) {
+ assert(i);
+ assert(i->ref >= 1);
+
+ if (!(--i->ref))
+ sink_input_free(i);
+}
+
+pa_sink_input* pa_sink_input_ref(pa_sink_input *i) {
+ assert(i);
+ assert(i->ref >= 1);
+
+ i->ref++;
+ return i;
+}
+
+void pa_sink_input_kill(pa_sink_input*i) {
+ assert(i);
+ assert(i->ref >= 1);
+
+ if (i->kill)
+ i->kill(i);
+}
+
+pa_usec_t pa_sink_input_get_latency(pa_sink_input *i) {
+ pa_usec_t r = 0;
+
+ assert(i);
+ assert(i->ref >= 1);
+
+ if (i->get_latency)
+ r += i->get_latency(i);
+
+ if (i->resampled_chunk.memblock)
+ r += pa_bytes_to_usec(i->resampled_chunk.length, &i->sample_spec);
+
+ return r;
+}
+
+int pa_sink_input_peek(pa_sink_input *i, pa_memchunk *chunk, pa_cvolume *volume) {
+ int ret = -1;
+ int do_volume_adj_here;
+
+ assert(i);
+ assert(i->ref >= 1);
+ assert(chunk);
+ assert(volume);
+
+ pa_sink_input_ref(i);
+
+ if (!i->peek || !i->drop || i->state == PA_SINK_INPUT_CORKED)
+ goto finish;
+
+ if (!i->resampler) {
+ do_volume_adj_here = 0;
+ ret = i->peek(i, chunk);
+ goto finish;
+ }
+
+ do_volume_adj_here = !pa_channel_map_equal(&i->channel_map, &i->sink->channel_map);
+
+ while (!i->resampled_chunk.memblock) {
+ pa_memchunk tchunk;
+ size_t l;
+
+ if ((ret = i->peek(i, &tchunk)) < 0)
+ goto finish;
+
+ assert(tchunk.length);
+
+ l = pa_resampler_request(i->resampler, CONVERT_BUFFER_LENGTH);
+
+ if (l > tchunk.length)
+ l = tchunk.length;
+
+ i->drop(i, &tchunk, l);
+ tchunk.length = l;
+
+ /* It might be necessary to adjust the volume here */
+ if (do_volume_adj_here) {
+ pa_memchunk_make_writable(&tchunk, i->sink->core->memblock_stat, 0);
+ pa_volume_memchunk(&tchunk, &i->sample_spec, &i->volume);
+ }
+
+ pa_resampler_run(i->resampler, &tchunk, &i->resampled_chunk);
+ pa_memblock_unref(tchunk.memblock);
+ }
+
+ assert(i->resampled_chunk.memblock);
+ assert(i->resampled_chunk.length);
+
+ *chunk = i->resampled_chunk;
+ pa_memblock_ref(i->resampled_chunk.memblock);
+
+ ret = 0;
+
+finish:
+
+ if (ret < 0 && i->playing && i->underrun)
+ i->underrun(i);
+
+ i->playing = ret >= 0;
+
+ if (ret >= 0) {
+ /* Let's see if we had to apply the volume adjustment
+ * ourselves, or if this can be done by the sink for us */
+
+ if (do_volume_adj_here)
+ /* We had different channel maps, so we already did the adjustment */
+ pa_cvolume_reset(volume, i->sink->sample_spec.channels);
+ else
+ /* We've both the same channel map, so let's have the sink do the adjustment for us*/
+ *volume = i->volume;
+ }
+
+ pa_sink_input_unref(i);
+
+ return ret;
+}
+
+void pa_sink_input_drop(pa_sink_input *i, const pa_memchunk *chunk, size_t length) {
+ assert(i);
+ assert(i->ref >= 1);
+ assert(length > 0);
+
+ if (!i->resampler) {
+ if (i->drop)
+ i->drop(i, chunk, length);
+ return;
+ }
+
+ assert(i->resampled_chunk.memblock);
+ assert(i->resampled_chunk.length >= length);
+
+ i->resampled_chunk.index += length;
+ i->resampled_chunk.length -= length;
+
+ if (i->resampled_chunk.length <= 0) {
+ pa_memblock_unref(i->resampled_chunk.memblock);
+ i->resampled_chunk.memblock = NULL;
+ i->resampled_chunk.index = i->resampled_chunk.length = 0;
+ }
+}
+
+void pa_sink_input_set_volume(pa_sink_input *i, const pa_cvolume *volume) {
+ assert(i);
+ assert(i->ref >= 1);
+ assert(i->sink);
+ assert(i->sink->core);
+
+ if (pa_cvolume_equal(&i->volume, volume))
+ return;
+
+ i->volume = *volume;
+ pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
+}
+
+const pa_cvolume * pa_sink_input_get_volume(pa_sink_input *i) {
+ assert(i);
+ assert(i->ref >= 1);
+
+ return &i->volume;
+}
+
+void pa_sink_input_cork(pa_sink_input *i, int b) {
+ int n;
+
+ assert(i);
+ assert(i->ref >= 1);
+
+ if (i->state == PA_SINK_INPUT_DISCONNECTED)
+ return;
+
+ n = i->state == PA_SINK_INPUT_CORKED && !b;
+
+ i->state = b ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING;
+
+ if (n)
+ pa_sink_notify(i->sink);
+}
+
+void pa_sink_input_set_rate(pa_sink_input *i, uint32_t rate) {
+ assert(i);
+ assert(i->resampler);
+ assert(i->ref >= 1);
+
+ if (i->sample_spec.rate == rate)
+ return;
+
+ i->sample_spec.rate = rate;
+ pa_resampler_set_input_rate(i->resampler, rate);
+}
+
+void pa_sink_input_set_name(pa_sink_input *i, const char *name) {
+ assert(i);
+ assert(i->ref >= 1);
+
+ pa_xfree(i->name);
+ i->name = pa_xstrdup(name);
+
+ pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
+}
+
+pa_resample_method_t pa_sink_input_get_resample_method(pa_sink_input *i) {
+ assert(i);
+ assert(i->ref >= 1);
+
+ if (!i->resampler)
+ return PA_RESAMPLER_INVALID;
+
+ return pa_resampler_get_method(i->resampler);
+}