diff options
Diffstat (limited to 'src/pulsesink.c')
| -rw-r--r-- | src/pulsesink.c | 647 |
1 files changed, 647 insertions, 0 deletions
diff --git a/src/pulsesink.c b/src/pulsesink.c new file mode 100644 index 0000000..a1f5990 --- /dev/null +++ b/src/pulsesink.c @@ -0,0 +1,647 @@ +/* $Id$ */ + +/*** + This file is part of gst-pulse. + + gst-pulse 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 2.1 of the + License, or (at your option) any later version. + + gst-pulse 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with gst-pulse; 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 <string.h> +#include <stdio.h> + +#include <gst/base/gstbasesink.h> +#include <gst/gsttaglist.h> + +#include "pulsesink.h" +#include "pulseutil.h" + +GST_DEBUG_CATEGORY_EXTERN(pulse_debug); +#define GST_CAT_DEFAULT pulse_debug + +enum { + PROP_SERVER = 1, + PROP_DEVICE, +}; + +static GstAudioSinkClass *parent_class = NULL; + +static void gst_pulsesink_destroy_stream(GstPolypSink *pulsesink); +static void gst_pulsesink_destroy_context(GstPolypSink *pulsesink); + +static void gst_pulsesink_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); +static void gst_pulsesink_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); +static void gst_pulsesink_finalize(GObject *object); +static void gst_pulsesink_dispose(GObject *object); + +static gboolean gst_pulsesink_open(GstAudioSink *asink); +static gboolean gst_pulsesink_close(GstAudioSink *asink); + +static gboolean gst_pulsesink_prepare(GstAudioSink *asink, GstRingBufferSpec *spec); +static gboolean gst_pulsesink_unprepare(GstAudioSink *asink); + +static guint gst_pulsesink_write(GstAudioSink *asink, gpointer data, guint length); +static guint gst_pulsesink_delay(GstAudioSink *asink); +static void gst_pulsesink_reset(GstAudioSink *asink); + +static gboolean gst_pulsesink_event(GstBaseSink *sink, GstEvent *event); + +#if (G_BYTE_ORDER == G_LITTLE_ENDIAN) +# define ENDIANNESS "LITTLE_ENDIAN, BIG_ENDIAN" +#else +# define ENDIANNESS "BIG_ENDIAN, LITTLE_ENDIAN" +#endif + +static void gst_pulsesink_base_init(gpointer g_class) { + + static GstStaticPadTemplate pad_template = GST_STATIC_PAD_TEMPLATE( + "sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS( + "audio/x-raw-int, " + "endianness = (int) { " ENDIANNESS " }, " + "signed = (boolean) TRUE, " + "width = (int) 16, " + "depth = (int) 16, " + "rate = (int) [ 1, MAX ], " + "channels = (int) [ 1, 16 ];" + + "audio/x-raw-int, " + "signed = (boolean) FALSE, " + "width = (int) 8, " + "depth = (int) 8, " + "rate = (int) [ 1, MAX ], " + "channels = (int) [ 1, 16 ];" + + "audio/x-raw-float, " + "endianness = (int) { " ENDIANNESS " }, " + "width = (int) 32, " + "rate = (int) [ 1, MAX ], " + "channels = (int) [ 1, 16 ];" + + "audio/x-alaw, " + "rate = (int) [ 1, MAX], " + "channels = (int) [ 1, 16 ];" + + "audio/x-mulaw, " + "rate = (int) [ 1, MAX], " + "channels = (int) [ 1, 16 ]" + ) + ); + + static const GstElementDetails details = + GST_ELEMENT_DETAILS( + "PulseAudio Audio Sink", + "Sink/Audio", + "Plays audio to a PulseAudio server", + "Lennart Poettering"); + + GstElementClass *element_class = GST_ELEMENT_CLASS(g_class); + + gst_element_class_set_details(element_class, &details); + gst_element_class_add_pad_template(element_class, gst_static_pad_template_get(&pad_template)); +} + +static void gst_pulsesink_class_init( + gpointer g_class, + gpointer class_data) { + + GObjectClass *gobject_class = G_OBJECT_CLASS(g_class); + GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS(g_class); + GstAudioSinkClass *gstaudiosink_class = GST_AUDIO_SINK_CLASS(g_class); + parent_class = g_type_class_peek_parent(g_class); + + gobject_class->dispose = GST_DEBUG_FUNCPTR(gst_pulsesink_dispose); + gobject_class->finalize = GST_DEBUG_FUNCPTR(gst_pulsesink_finalize); + gobject_class->set_property = GST_DEBUG_FUNCPTR(gst_pulsesink_set_property); + gobject_class->get_property = GST_DEBUG_FUNCPTR(gst_pulsesink_get_property); + + gstbasesink_class->event = GST_DEBUG_FUNCPTR(gst_pulsesink_event); + + gstaudiosink_class->open = GST_DEBUG_FUNCPTR(gst_pulsesink_open); + gstaudiosink_class->close = GST_DEBUG_FUNCPTR(gst_pulsesink_close); + gstaudiosink_class->prepare = GST_DEBUG_FUNCPTR(gst_pulsesink_prepare); + gstaudiosink_class->unprepare = GST_DEBUG_FUNCPTR(gst_pulsesink_unprepare); + gstaudiosink_class->write = GST_DEBUG_FUNCPTR(gst_pulsesink_write); + gstaudiosink_class->delay = GST_DEBUG_FUNCPTR(gst_pulsesink_delay); + gstaudiosink_class->reset = GST_DEBUG_FUNCPTR(gst_pulsesink_reset); + + /* Overwrite GObject fields */ + g_object_class_install_property( + gobject_class, + PROP_SERVER, + g_param_spec_string("server", "Server", "The PulseAudio server to connect to", NULL, G_PARAM_READWRITE)); + g_object_class_install_property( + gobject_class, + PROP_DEVICE, + g_param_spec_string("device", "Sink", "The PulseAudio sink device to connect to", NULL, G_PARAM_READWRITE)); +} + +static void gst_pulsesink_init( + GTypeInstance * instance, + gpointer g_class) { + + GstPolypSink *pulsesink = GST_PULSESINK(instance); + int e; + + pulsesink->server = pulsesink->device = pulsesink->stream_name = NULL; + + pulsesink->context = NULL; + pulsesink->stream = NULL; + + pulsesink->mainloop = pa_threaded_mainloop_new(); + g_assert(pulsesink->mainloop); + + e = pa_threaded_mainloop_start(pulsesink->mainloop); + g_assert(e == 0); +} + +static void gst_pulsesink_destroy_stream(GstPolypSink* pulsesink) { + if (pulsesink->stream) { + pa_stream_disconnect(pulsesink->stream); + pa_stream_unref(pulsesink->stream); + pulsesink->stream = NULL; + } + + g_free(pulsesink->stream_name); + pulsesink->stream_name = NULL; +} + +static void gst_pulsesink_destroy_context(GstPolypSink* pulsesink) { + + gst_pulsesink_destroy_stream(pulsesink); + + if (pulsesink->context) { + pa_context_disconnect(pulsesink->context); + pa_context_unref(pulsesink->context); + pulsesink->context = NULL; + } +} + +static void gst_pulsesink_finalize(GObject * object) { + GstPolypSink *pulsesink = GST_PULSESINK(object); + + pa_threaded_mainloop_stop(pulsesink->mainloop); + + gst_pulsesink_destroy_context(pulsesink); + + g_free(pulsesink->server); + g_free(pulsesink->device); + g_free(pulsesink->stream_name); + + pa_threaded_mainloop_free(pulsesink->mainloop); + + G_OBJECT_CLASS(parent_class)->finalize(object); +} + +static void gst_pulsesink_dispose(GObject * object) { + G_OBJECT_CLASS(parent_class)->dispose(object); +} + +static void gst_pulsesink_set_property( + GObject * object, + guint prop_id, + const GValue * value, + GParamSpec * pspec) { + GstPolypSink *pulsesink = GST_PULSESINK(object); + + switch (prop_id) { + case PROP_SERVER: + g_free(pulsesink->server); + pulsesink->server = g_value_dup_string(value); + break; + + case PROP_DEVICE: + g_free(pulsesink->device); + pulsesink->device = g_value_dup_string(value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); + break; + } +} + +static void gst_pulsesink_get_property( + GObject * object, + guint prop_id, + GValue * value, + GParamSpec * pspec) { + + GstPolypSink *pulsesink = GST_PULSESINK(object); + + switch(prop_id) { + case PROP_SERVER: + g_value_set_string(value, pulsesink->server); + break; + + case PROP_DEVICE: + g_value_set_string(value, pulsesink->device); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); + break; + } +} + +static void gst_pulsesink_context_state_cb(pa_context *c, void *userdata) { + GstPolypSink *pulsesink = GST_PULSESINK(userdata); + + switch (pa_context_get_state(c)) { + case PA_CONTEXT_READY: + case PA_CONTEXT_TERMINATED: + case PA_CONTEXT_FAILED: + pa_threaded_mainloop_signal(pulsesink->mainloop, 0); + break; + + case PA_CONTEXT_UNCONNECTED: + case PA_CONTEXT_CONNECTING: + case PA_CONTEXT_AUTHORIZING: + case PA_CONTEXT_SETTING_NAME: + break; + } +} + +static void gst_pulsesink_stream_state_cb(pa_stream *s, void * userdata) { + GstPolypSink *pulsesink = GST_PULSESINK(userdata); + + switch (pa_stream_get_state(s)) { + + case PA_STREAM_READY: + case PA_STREAM_FAILED: + case PA_STREAM_TERMINATED: + pa_threaded_mainloop_signal(pulsesink->mainloop, 0); + break; + + case PA_STREAM_UNCONNECTED: + case PA_STREAM_CREATING: + break; + } +} + +static void gst_pulsesink_stream_request_cb(pa_stream *s, size_t length, void *userdata) { + GstPolypSink *pulsesink = GST_PULSESINK(userdata); + + pa_threaded_mainloop_signal(pulsesink->mainloop, 0); +} + +static void gst_pulsesink_stream_latency_update_cb(pa_stream *s, void *userdata) { + GstPolypSink *pulsesink = GST_PULSESINK(userdata); + + pa_threaded_mainloop_signal(pulsesink->mainloop, 0); +} + +static gboolean gst_pulsesink_open(GstAudioSink *asink) { + GstPolypSink *pulsesink = GST_PULSESINK(asink); + gchar *name = gst_pulse_client_name(); + + pa_threaded_mainloop_lock(pulsesink->mainloop); + + if (!(pulsesink->context = pa_context_new(pa_threaded_mainloop_get_api(pulsesink->mainloop), name))) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Failed to create context"), (NULL)); + goto unlock_and_fail; + } + + pa_context_set_state_callback(pulsesink->context, gst_pulsesink_context_state_cb, pulsesink); + + if (pa_context_connect(pulsesink->context, pulsesink->server, 0, NULL) < 0) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Failed to connect: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + /* Wait until the context is ready */ + pa_threaded_mainloop_wait(pulsesink->mainloop); + + if (pa_context_get_state(pulsesink->context) != PA_CONTEXT_READY) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Failed to connect: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + g_free(name); + return TRUE; + +unlock_and_fail: + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + g_free(name); + return FALSE; +} + +static gboolean gst_pulsesink_close(GstAudioSink *asink) { + GstPolypSink *pulsesink = GST_PULSESINK(asink); + + pa_threaded_mainloop_lock(pulsesink->mainloop); + gst_pulsesink_destroy_context(pulsesink); + pa_threaded_mainloop_unlock(pulsesink->mainloop); + + return TRUE; +} + +static gboolean gst_pulsesink_prepare(GstAudioSink *asink, GstRingBufferSpec *spec) { + pa_buffer_attr buf_attr; + + GstPolypSink *pulsesink = GST_PULSESINK(asink); + + if (!gst_pulse_fill_sample_spec(spec, &pulsesink->sample_spec)) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, SETTINGS, ("Invalid sample specification."), (NULL)); + goto unlock_and_fail; + } + + pa_threaded_mainloop_lock(pulsesink->mainloop); + + if (!pulsesink->context || pa_context_get_state(pulsesink->context) != PA_CONTEXT_READY) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Bad context state: %s", pulsesink->context ? pa_strerror(pa_context_errno(pulsesink->context)) : NULL), (NULL)); + goto unlock_and_fail; + } + + if (!(pulsesink->stream = pa_stream_new(pulsesink->context, pulsesink->stream_name ? pulsesink->stream_name : "Playback Stream", &pulsesink->sample_spec, NULL))) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Failed to create stream: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + pa_stream_set_state_callback(pulsesink->stream, gst_pulsesink_stream_state_cb, pulsesink); + pa_stream_set_write_callback(pulsesink->stream, gst_pulsesink_stream_request_cb, pulsesink); + pa_stream_set_latency_update_callback(pulsesink->stream, gst_pulsesink_stream_latency_update_cb, pulsesink); + + memset(&buf_attr, 0, sizeof(buf_attr)); + buf_attr.tlength = spec->segtotal*spec->segsize; + buf_attr.maxlength = buf_attr.tlength*2; + buf_attr.prebuf = buf_attr.minreq = spec->segsize; + + if (pa_stream_connect_playback(pulsesink->stream, pulsesink->device, &buf_attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE|PA_STREAM_NOT_MONOTONOUS, NULL, NULL) < 0) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Failed to connect stream: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + /* Wait until the stream is ready */ + pa_threaded_mainloop_wait(pulsesink->mainloop); + + if (pa_stream_get_state(pulsesink->stream) != PA_STREAM_READY) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Failed to connect stream: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + + spec->bytes_per_sample = pa_frame_size(&pulsesink->sample_spec); + memset(spec->silence_sample, 0, spec->bytes_per_sample); + + return TRUE; + +unlock_and_fail: + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + return FALSE; +} + +static gboolean gst_pulsesink_unprepare(GstAudioSink * asink) { + GstPolypSink *pulsesink = GST_PULSESINK(asink); + + pa_threaded_mainloop_lock(pulsesink->mainloop); + gst_pulsesink_destroy_stream(pulsesink); + pa_threaded_mainloop_unlock(pulsesink->mainloop); + + return TRUE; +} + +#define CHECK_DEAD_GOTO(pulsesink, label) \ +if (!(pulsesink)->context || pa_context_get_state((pulsesink)->context) != PA_CONTEXT_READY || \ + !(pulsesink)->stream || pa_stream_get_state((pulsesink)->stream) != PA_STREAM_READY) { \ + GST_ELEMENT_ERROR((pulsesink), RESOURCE, FAILED, ("Disconnected: %s", (pulsesink)->context ? pa_strerror(pa_context_errno((pulsesink)->context)) : NULL), (NULL)); \ + goto label; \ +} + +static guint gst_pulsesink_write(GstAudioSink *asink, gpointer data, guint length) { + GstPolypSink *pulsesink = GST_PULSESINK(asink); + size_t sum = 0; + + pa_threaded_mainloop_lock(pulsesink->mainloop); + + while (length > 0) { + size_t l; + + for (;;) { + CHECK_DEAD_GOTO(pulsesink, unlock_and_fail); + + if ((l = pa_stream_writable_size(pulsesink->stream)) == (size_t) -1) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("pa_stream_writable_size() failed: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + if (l > 0) + break; + + pa_threaded_mainloop_wait(pulsesink->mainloop); + } + + if (l > length) + l = length; + + if (pa_stream_write(pulsesink->stream, data, l, NULL, 0, PA_SEEK_RELATIVE) < 0) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("pa_stream_write() failed: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + data = (guint8*) data + l; + length -= l; + + sum += l; + } + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + + return sum; + +unlock_and_fail: + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + return 0; +} + +static guint gst_pulsesink_delay(GstAudioSink *asink) { + GstPolypSink *pulsesink = GST_PULSESINK(asink); + pa_usec_t t; + + pa_threaded_mainloop_lock(pulsesink->mainloop); + + for (;;) { + CHECK_DEAD_GOTO(pulsesink, unlock_and_fail); + + if (pa_stream_get_latency(pulsesink->stream, &t, NULL) >= 0) + break; + + if (pa_context_errno(pulsesink->context) != PA_ERR_NODATA) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("pa_stream_get_latency() failed: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + pa_threaded_mainloop_wait(pulsesink->mainloop); + } + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + + return gst_util_uint64_scale_int (t, pulsesink->sample_spec.rate, 1000000LL); + +unlock_and_fail: + + pa_threaded_mainloop_unlock(pulsesink->mainloop); + return 0; +} + +static void gst_pulsesink_success_cb(pa_stream *s, int success, void *userdata) { + GstPolypSink *pulsesink = GST_PULSESINK(userdata); + + pulsesink->operation_success = success; + pa_threaded_mainloop_signal(pulsesink->mainloop, 0); +} + +static void gst_pulsesink_reset(GstAudioSink *asink) { + GstPolypSink *pulsesink = GST_PULSESINK(asink); + pa_operation *o = NULL; + + pa_threaded_mainloop_lock(pulsesink->mainloop); + + CHECK_DEAD_GOTO(pulsesink, unlock_and_fail); + + if (!(o = pa_stream_flush(pulsesink->stream, gst_pulsesink_success_cb, pulsesink))) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("pa_stream_flush() failed: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + pulsesink->operation_success = 0; + while (pa_operation_get_state(o) != PA_OPERATION_DONE) { + CHECK_DEAD_GOTO(pulsesink, unlock_and_fail); + + pa_threaded_mainloop_wait(pulsesink->mainloop); + } + + if (!pulsesink->operation_success) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("Flush failed: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + +unlock_and_fail: + + if (o) { + pa_operation_cancel(o); + pa_operation_unref(o); + } + + pa_threaded_mainloop_unlock(pulsesink->mainloop); +} + +static void gst_pulsesink_change_title(GstPolypSink *pulsesink, const gchar *t) { + pa_operation *o = NULL; + + pa_threaded_mainloop_lock(pulsesink->mainloop); + + g_free(pulsesink->stream_name); + pulsesink->stream_name = g_strdup(t); + + if (!(pulsesink)->context || pa_context_get_state((pulsesink)->context) != PA_CONTEXT_READY || + !(pulsesink)->stream || pa_stream_get_state((pulsesink)->stream) != PA_STREAM_READY) { + goto unlock_and_fail; + } + + if (!(o = pa_stream_set_name(pulsesink->stream, pulsesink->stream_name, NULL, pulsesink))) { + GST_ELEMENT_ERROR(pulsesink, RESOURCE, FAILED, ("pa_stream_set_name() failed: %s", pa_strerror(pa_context_errno(pulsesink->context))), (NULL)); + goto unlock_and_fail; + } + + /* We're not interested if this operation failed or not */ + +unlock_and_fail: + + if (o) + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(pulsesink->mainloop); +} + +static gboolean gst_pulsesink_event(GstBaseSink *sink, GstEvent *event) { + GstPolypSink *pulsesink = GST_PULSESINK(sink); + + switch (GST_EVENT_TYPE(event)) { + case GST_EVENT_TAG: { + gchar *title = NULL, *artist = NULL, *location = NULL, *description = NULL, *t = NULL, *buf = NULL; + GstTagList *l; + + gst_event_parse_tag(event, &l); + + gst_tag_list_get_string(l, GST_TAG_TITLE, &title); + gst_tag_list_get_string(l, GST_TAG_ARTIST, &artist); + gst_tag_list_get_string(l, GST_TAG_LOCATION, &location); + gst_tag_list_get_string(l, GST_TAG_DESCRIPTION, &description); + + if (title && artist) + t = buf = g_strdup_printf("'%s' by '%s'", title, artist); + else if (title) + t = title; + else if (description) + t = description; + else if (location) + t = location; + + if (t) + gst_pulsesink_change_title(pulsesink, t); + + g_free(title); + g_free(artist); + g_free(location); + g_free(description); + g_free(buf); + + break; + } + default: + ; + } + + return GST_BASE_SINK_CLASS(parent_class)->event(sink, event); +} + +GType gst_pulsesink_get_type(void) { + static GType pulsesink_type = 0; + + if (!pulsesink_type) { + + static const GTypeInfo pulsesink_info = { + sizeof(GstPolypSinkClass), + gst_pulsesink_base_init, + NULL, + gst_pulsesink_class_init, + NULL, + NULL, + sizeof(GstPolypSink), + 0, + gst_pulsesink_init, + }; + + pulsesink_type = g_type_register_static( + GST_TYPE_AUDIO_SINK, + "GstPolypSink", + &pulsesink_info, + 0); + } + + return pulsesink_type; +} |