Added PulseAudio support

2 files changed, 322 insertions, 0 deletions

diff --git a/plugins/pulse/Makefile.am b/plugins/pulse/Makefile.am
new file mode 100644
index 00000000..c04bdb81
--- /dev/null
+++ b/plugins/pulse/Makefile.am
@@ -0,0 +1,7 @@
+pulsedir = $(libdir)/$(PACKAGE)
+pkglib_LTLIBRARIES = pulse.la
+AM_CFLAGS = $(CFLAGS) $(PULSE_DEPS_CFLAGS) -std=c99
+pulse_la_SOURCES = pulse.c
+pulse_la_LDFLAGS = -module
+pulse_la_LIBADD = $(LDADD) $(PULSE_DEPS_LIBS)
+
diff --git a/plugins/pulse/pulse.c b/plugins/pulse/pulse.c
new file mode 100644
index 00000000..a359bf19
--- /dev/null
+++ b/plugins/pulse/pulse.c
@@ -0,0 +1,315 @@
+/*
+    DeaDBeeF - ultimate music player for GNU/Linux systems with X11
+    Copyright (C) 2009-2010 Alexey Yakovenko <waker@users.sourceforge.net>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+
+    PulseAudio output plugin
+    Copyright (C) 2010 Anton Novikov <tonn.post@gmail.com>
+*/
+
+#ifdef HAVE_CONFIG_H
+#  include "../../config.h"
+#endif
+
+#include <pulse/simple.h>
+
+#include <stdint.h>
+#include <unistd.h>
+
+#ifdef __linux__
+    #include <sys/prctl.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include "../../deadbeef.h"
+
+#define trace(...) { fprintf(stdout, __VA_ARGS__); }
+//#define trace(fmt,...)
+
+static DB_output_t plugin;
+DB_functions_t * deadbeef;
+
+#define CONFSTR_PULSE_SAMPLERATE "pulse.samplerate"
+#define CONFSTR_PULSE_SERVERADDR "pulse.serveraddr"
+#define CONFSTR_PULSE_BUFFERSIZE "pulse.buffersize"
+
+static intptr_t pulse_tid;
+static int pulse_terminate;
+
+static pa_simple *s;
+static pa_sample_spec ss;
+static int state;
+static uintptr_t mutex;
+
+static int buffer_size;
+
+static void pulse_thread(void *context);
+
+static void pulse_callback(char *stream, int len);
+
+static int pulse_init(void)
+{
+    trace ("pulse_init\n");
+    state = OUTPUT_STATE_STOPPED;
+    pulse_terminate = 0;
+
+    // Read serveraddr from config
+    const char * server = deadbeef->conf_get_str(CONFSTR_PULSE_SERVERADDR, NULL);
+
+    if (server)
+        server = strcmp(server, "default") ? server : NULL;
+
+    // Read samplerate from config
+    ss.rate = deadbeef->conf_get_int(CONFSTR_PULSE_SAMPLERATE, 44100);
+    trace ("pulse: samplerate: %d\n", ss.rate);
+
+    // TODO: add config for this
+    pa_channel_map * map = NULL;//pa_channel_map_init_stereo(NULL);
+    ss.channels = 2;
+    ss.format = PA_SAMPLE_S16NE;
+
+    // TODO: where list of all available devices? add this option to config too..
+    char * dev = NULL;
+
+    pa_buffer_attr * attr = NULL;
+    //attr->maxlength = Maximum length of the buffer.
+    //attr->tlength = Playback only: target length of the buffer.
+    //attr->prebuf = Playback only: pre-buffering.
+    //attr->minreq = Playback only: minimum request.
+    //attr->fragsize = Recording only: fragment size.
+
+    buffer_size = deadbeef->conf_get_int(CONFSTR_PULSE_BUFFERSIZE, 4096);
+
+    int error;
+    s = pa_simple_new(server, "Deadbeef", PA_STREAM_PLAYBACK, dev, "Music", &ss, map, attr, &error);
+
+    if (!s)
+    {
+        return -1;
+    }
+
+    pulse_tid = deadbeef->thread_start(pulse_thread, NULL);
+
+    return 0;
+}
+
+static int pulse_free(void)
+{
+    trace("pulse_free\n");
+
+    if (pulse_tid)
+    {
+        pulse_terminate = 1;
+        deadbeef->thread_join(pulse_tid);
+    }
+
+    pulse_tid = 0;
+    state = OUTPUT_STATE_STOPPED;
+    pa_simple_free(s);
+    s = NULL;
+
+    return 0;
+}
+
+static int pulse_play(void)
+{
+    if (!pulse_tid)
+    {
+        if (pulse_init () < 0)
+        {
+            return -1;
+        }
+    }
+
+    state = OUTPUT_STATE_PLAYING;
+    return 0;
+}
+
+static int pulse_stop(void)
+{
+    state = OUTPUT_STATE_STOPPED;
+    deadbeef->streamer_reset(1);
+    return 0;
+}
+
+static int pulse_pause(void)
+{
+    if (state == OUTPUT_STATE_STOPPED)
+    {
+        return -1;
+    }
+
+    state = OUTPUT_STATE_PAUSED;
+
+    return 0;
+}
+
+static int pulse_unpause(void)
+{
+    if (state == OUTPUT_STATE_PAUSED)
+    {
+        state = OUTPUT_STATE_PLAYING;
+    }
+
+    return 0;
+}
+
+static int pulse_change_rate(int rate)
+{
+    pulse_free();
+    ss.rate = rate;
+
+    if (!pulse_init())
+        return -1;
+
+    return ss.rate;
+}
+
+static int pulse_get_rate(void)
+{
+    return ss.rate;
+}
+
+static int pulse_get_bps(void)
+{
+    return 16;
+}
+
+static int pulse_get_channels(void)
+{
+    return ss.channels;
+}
+
+static int pulse_get_endianness(void)
+{
+#if WORDS_BIGENDIAN
+    return 1;
+#else
+    return 0;
+#endif
+}
+
+static void pulse_thread(void *context)
+{
+#ifdef __linux__
+    prctl(PR_SET_NAME, "deadbeef-pulse", 0, 0, 0, 0);
+#endif
+
+    while (!pulse_terminate)
+    {
+        if (state != OUTPUT_STATE_PLAYING)
+        {
+            usleep(1000);
+        }
+        else
+        {
+            char buf[buffer_size];
+            pulse_callback (buf, sizeof (buf));
+            int error;
+
+            deadbeef->mutex_lock(mutex);
+            int res = pa_simple_write(s, buf, sizeof (buf), &error);
+            deadbeef->mutex_unlock(mutex);
+
+            if (res < 0)
+            {
+                fprintf(stderr, "pulse: failed to write buffer\n");
+                pulse_terminate = 1;
+            }
+        }
+    }
+}
+
+static void pulse_callback(char *stream, int len)
+{
+    if (!deadbeef->streamer_ok_to_read (len))
+    {
+        memset (stream, 0, len);
+        return;
+    }
+
+    int bytesread = deadbeef->streamer_read(stream, len);
+    int16_t ivolume = deadbeef->volume_get_amp() * 1000;
+
+    for (int i = 0; i < bytesread/2; i++)
+    {
+        ((int16_t*)stream)[i] = (int16_t)(((int32_t)(((int16_t*)stream)[i])) * ivolume / 1000);
+    }
+
+    if (bytesread < len)
+    {
+        memset (stream + bytesread, 0, len-bytesread);
+    }
+}
+
+static int pulse_get_state(void)
+{
+    return state;
+}
+
+static int pulse_plugin_start(void)
+{
+    mutex = deadbeef->mutex_create();
+
+    return 0;
+}
+
+static int pulse_plugin_stop(void)
+{
+    deadbeef->mutex_free(mutex);
+
+    return 0;
+}
+
+DB_plugin_t * pulse_load(DB_functions_t *api)
+{
+    deadbeef = api;
+    return DB_PLUGIN (&plugin);
+}
+
+static const char settings_dlg[] =
+    "property \"PulseAudio server\" entry " CONFSTR_PULSE_SERVERADDR " default;\n"
+    "property \"Preferred buffer size\" entry " CONFSTR_PULSE_BUFFERSIZE " 4096;\n"
+    "property \"Samplerate\" entry " CONFSTR_PULSE_SAMPLERATE " 44100;\n";
+
+static DB_output_t plugin =
+{
+    DB_PLUGIN_SET_API_VERSION
+    .plugin.version_major = 0,
+    .plugin.version_minor = 1,
+    .plugin.nostop = 0,
+    .plugin.type = DB_PLUGIN_OUTPUT,
+    .plugin.name = "PulseAudio output plugin",
+    .plugin.descr = "plays sound via pulse API",
+    .plugin.author = "Anton Novikov",
+    .plugin.email = "tonn.post@gmail.com",
+    .plugin.website = "http://deadbeef.sf.net",
+    .plugin.start = pulse_plugin_start,
+    .plugin.stop = pulse_plugin_stop,
+    .plugin.configdialog = settings_dlg,
+    .init = pulse_init,
+    .free = pulse_free,
+    .change_rate = pulse_change_rate,
+    .play = pulse_play,
+    .stop = pulse_stop,
+    .pause = pulse_pause,
+    .unpause = pulse_unpause,
+    .state = pulse_get_state,
+    .samplerate = pulse_get_rate,
+    .bitspersample = pulse_get_bps,
+    .channels = pulse_get_channels,
+    .endianness = pulse_get_endianness,
+};