diff --git a/Makefile b/Makefile index c25344b5..e99c4f79 100644 --- a/Makefile +++ b/Makefile @@ -15,6 +15,10 @@ ifdef CONFIG_AO SRCS += audio_ao.c endif +ifdef CONFIG_PULSE + SRCS += audio_pulse.c +endif + ifdef CONFIG_AVAHI SRCS += avahi.c endif diff --git a/audio.c b/audio.c index df5f8825..f3497e62 100644 --- a/audio.c +++ b/audio.c @@ -32,9 +32,15 @@ #ifdef CONFIG_AO extern audio_output audio_ao; #endif +#ifdef CONFIG_PULSE +extern audio_output audio_pulse; +#endif extern audio_output audio_dummy, audio_pipe; static audio_output *outputs[] = { +#ifdef CONFIG_PULSE + &audio_pulse, +#endif #ifdef CONFIG_AO &audio_ao, #endif diff --git a/audio_pulse.c b/audio_pulse.c new file mode 100644 index 00000000..0fb06248 --- /dev/null +++ b/audio_pulse.c @@ -0,0 +1,128 @@ +/* + * PulseAudio output driver. This file is part of Shairport. + * Copyright (c) Paul Lietar 2013 + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +#include +#include +#include +#include +#include +#include "common.h" +#include "audio.h" + +static pa_simple *pa_dev = NULL; +static int pa_error; +static const char *pa_server = NULL; +static const char *pa_sink = NULL; +static const char *pa_appname = NULL; + +static void help(void) { + printf(" -a server set the server name\n" + " -s sink set the output sink\n" + " -n name set the application name, as seen by PulseAudio\n" + " defaults to the access point name\n" + ); +} + +static int init(int argc, char **argv) { + pa_appname = config.apname; + + optind = 1; // optind=0 is equivalent to optind=1 plus special behaviour + argv--; // so we shift the arguments to satisfy getopt() + argc++; + + // some platforms apparently require optreset = 1; - which? + int opt; + char *mid; + while ((opt = getopt(argc, argv, "a:s:n:")) > 0) { + switch (opt) { + case 'a': + pa_server = optarg; + break; + case 's': + pa_sink = optarg; + break; + case 'n': + pa_appname = optarg; + break; + default: + help(); + die("Invalid audio option -%c specified", opt); + } + } + + if (optind < argc) + die("Invalid audio argument: %s", argv[optind]); + + return 0; +} + +static void deinit(void) { +} + +static void start(int sample_rate) { + const pa_sample_spec ss = { + .format = PA_SAMPLE_S16LE, + .rate = sample_rate, + .channels = 2 + }; + + pa_dev = pa_simple_new(pa_server, + pa_appname, + PA_STREAM_PLAYBACK, + pa_sink, + "Shairport Stream", + &ss, NULL, NULL, + &pa_error); + + if (!pa_dev) + die("Could not connect to pulseaudio server: %s", pa_strerror(pa_error)); +} + +static void play(short buf[], int samples) { + if( pa_simple_write(pa_dev, (char *)buf, (size_t)samples * 4, &pa_error) < 0 ) + warn("pa_simple_write() failed: %s\n", pa_strerror(pa_error)); +} + +static void stop(void) { + if (pa_simple_drain(pa_dev, &pa_error) < 0) + warn("pa_simple_drain() failed: %s\n", pa_strerror(pa_error)); + + if (pa_dev) + pa_simple_free(pa_dev); + pa_dev = NULL; +} + +audio_output audio_pulse = { + .name = "pulse", + .help = &help, + .init = &init, + .deinit = &deinit, + .start = &start, + .stop = &stop, + .play = &play, + .volume = NULL +}; diff --git a/configure b/configure index e0b1d12c..e32793f6 100755 --- a/configure +++ b/configure @@ -33,6 +33,16 @@ else echo libao or its dev package not found fi +if pkg-config libpulse-simple 2>/dev/null; then + CFLAGS="${CFLAGS} `pkg-config --cflags libpulse-simple`" + LDFLAGS="${LDFLAGS} `pkg-config --libs libpulse-simple`" + echo "#define CONFIG_PULSE" >> config.h + echo "CONFIG_PULSE=yes" >> config.mk + echo libpulse found +else + echo libpulse or its dev package not found +fi + if pkg-config avahi-client 2>/dev/null; then CFLAGS="${CFLAGS} `pkg-config --cflags avahi-client`" LDFLAGS="${LDFLAGS} `pkg-config --libs avahi-client`"