diff options
Diffstat (limited to 'src/polypsink.c')
-rw-r--r-- | src/polypsink.c | 611 |
1 files changed, 611 insertions, 0 deletions
diff --git a/src/polypsink.c b/src/polypsink.c new file mode 100644 index 0000000..bc37252 --- /dev/null +++ b/src/polypsink.c @@ -0,0 +1,611 @@ +#include <pthread.h> +#include <string.h> +#include <stdio.h> + +#include <polyp/polyplib-error.h> +#include <polyp/mainloop.h> + +#include "polypsink.h" + +enum { + ARG_0, + ARG_SERVER, + ARG_SINK, +}; + +static GstElementClass *parent_class = NULL; + +static void create_stream(GstPolypSink *polypsink); +static void destroy_stream(GstPolypSink *polypsink); + +static void create_context(GstPolypSink *polypsink); +static void destroy_context(GstPolypSink *polypsink); + +static void gst_polypsink_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) 1234, " /*{ LITTLE_ENDIAN , BIG_ENDIAN }, "*/ + "signed = (boolean) TRUE, " + "width = (int) 16, " + "depth = (int) 16, " + "rate = (int) 44100, " /*[ 1000, 192000 ], "*/ + "channels = (int) [ 1, 16 ]" /*[ 1, 16 ];"*/ + +/* "audio/x-raw-float, " */ +/* "endianness = (int) { LITTLE_ENDIAN, BIG_ENDIAN }, " */ +/* "width = (int) 32, " */ +/* "rate = (int) [ 1000, 192000 ], " */ +/* "channels = (int) [ 1, 16 ];" */ + +/* "audio/x-raw-int, " */ +/* "signed = (boolean) FALSE, " */ +/* "width = (int) 8, " */ +/* "depth = (int) 8, " */ +/* "rate = (int) [ 1000, 192000 ], " */ + /* "channels = (int) [ 1, 16 ]"*/) + ); + + static const GstElementDetails details = { + "Polypaudio Audio Sink", + "Sink/Audio", + "Plays audio to a Polypaudio server", + "Lennart Poettering", + }; + + GstElementClass *element_class = GST_ELEMENT_CLASS(g_class); + gst_element_class_add_pad_template(element_class, gst_static_pad_template_get(&pad_template)); + gst_element_class_set_details(element_class, &details); +} + +static void gst_polypsink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { + GstPolypSink *polypsink; + g_return_if_fail(GST_IS_POLYPSINK(object)); + polypsink = GST_POLYPSINK(object); + + switch (prop_id) { + case ARG_SERVER: + g_free(polypsink->server); + polypsink->server = g_strdup(g_value_get_string(value)); + break; + + case ARG_SINK: + g_free(polypsink->sink); + polypsink->sink = g_strdup(g_value_get_string(value)); + break; + + default: + g_message("Fehler!"); + G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); + break; + } +} + +static void gst_polypsink_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec * pspec) { + GstPolypSink *polypsink; + g_return_if_fail(GST_IS_POLYPSINK(object)); + polypsink = GST_POLYPSINK(object); + + switch (prop_id) { + case ARG_SERVER: + g_value_set_string(value, polypsink->server); + break; + + case ARG_SINK: + g_value_set_string(value, polypsink->sink); + break; + + default: + g_message("Fehler!"); + G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); + break; + } +} + +static GstElementStateReturn gst_polypsink_change_state(GstElement * element) { + GstPolypSink *polypsink; + + polypsink = GST_POLYPSINK (element); + + g_message("state change: %i -> %i" , GST_STATE(element), GST_STATE_PENDING(element)); + + switch(GST_STATE_TRANSITION(element)) { + + case GST_STATE_NULL_TO_READY: + g_message("NULL->READY"); + create_context(polypsink); + g_message("NULL->READY DONE"); + break; + + case GST_STATE_READY_TO_NULL: + g_message("READY->NULL"); + destroy_context(polypsink); + g_message("READY->NULL DONE"); + break; + + case GST_STATE_READY_TO_PAUSED: + + g_message("READY->PAUSED"); + + create_stream(polypsink); + + if (polypsink->stream && pa_stream_get_state(polypsink->stream) == PA_STREAM_READY) + pa_operation_unref(pa_stream_cork(polypsink->stream, 1, NULL, NULL)); + break; + + case GST_STATE_PLAYING_TO_PAUSED: + + g_message("PLAYING->PAUSED"); + + if (polypsink->stream && pa_stream_get_state(polypsink->stream) == PA_STREAM_READY) + pa_operation_unref(pa_stream_cork(polypsink->stream, 1, NULL, NULL)); + + break; + + case GST_STATE_PAUSED_TO_PLAYING: + + g_message("PAUSED->PLAYING"); + + create_stream(polypsink); + + if (polypsink->stream && pa_stream_get_state(polypsink->stream) == PA_STREAM_READY) + pa_operation_unref(pa_stream_cork(polypsink->stream, 0, NULL, NULL)); + + break; + + case GST_STATE_PAUSED_TO_READY: + + g_message("PAUSED->READY"); + + destroy_stream(polypsink); + break; + } + + if (GST_ELEMENT_CLASS(parent_class)->change_state) + return GST_ELEMENT_CLASS(parent_class)->change_state (element); + + return GST_STATE_SUCCESS; +} + + +static void do_write(GstPolypSink *polypsink, size_t length) { + size_t l; + + if (!polypsink->buffer) + return; + + g_assert(polypsink->buffer_index < GST_BUFFER_SIZE(polypsink->buffer)); + l = GST_BUFFER_SIZE(polypsink->buffer) - polypsink->buffer_index; + + if (l > length) + l = length; + + pa_stream_write(polypsink->stream, GST_BUFFER_DATA(polypsink->buffer) + polypsink->buffer_index, l, NULL, 0); + polypsink->buffer_index += l; + +/* g_message("WROTE: %i/%i", polypsink->buffer_index, GST_BUFFER_SIZE(polypsink->buffer)); */ + + if (polypsink->buffer_index >= GST_BUFFER_SIZE(polypsink->buffer)) { + gst_buffer_unref(polypsink->buffer); + polypsink->buffer = NULL; + polypsink->buffer_index = 0; + } +} + +static void stream_write_callback(struct pa_stream *s, size_t length, void *userdata) { + GstPolypSink *polypsink = userdata; + g_assert(s && length && polypsink); + + do_write(polypsink, length); +} + +static void stream_state_callback(struct pa_stream *s, void *userdata) { + GstPolypSink *polypsink = userdata; + g_assert(s && polypsink); + +/* g_message("stream_state_callback()"); */ + + switch (pa_stream_get_state(s)) { + case PA_STREAM_DISCONNECTED: + case PA_STREAM_CREATING: + break; + + case PA_STREAM_READY: + break; + + case PA_STREAM_FAILED: + GST_ELEMENT_ERROR(GST_ELEMENT(polypsink), RESOURCE, BUSY, ("Stream creation failed: %s", pa_strerror(pa_context_errno(pa_stream_get_context(s)))), (NULL)); + + /* Pass over */ + case PA_STREAM_TERMINATED: + default: + g_message("TERMINATED"); + polypsink->mainloop_api->quit(polypsink->mainloop_api, 1); + destroy_context(polypsink); + break; + } +} + +static void context_state_callback(struct pa_context *c, void *userdata) { + GstPolypSink *polypsink = userdata; + g_assert(c && polypsink); + +/* g_message("context_state_callback()"); */ + + switch (pa_context_get_state(c)) { + case PA_CONTEXT_UNCONNECTED: + case PA_CONTEXT_CONNECTING: + case PA_CONTEXT_AUTHORIZING: + case PA_CONTEXT_SETTING_NAME: + break; + + case PA_CONTEXT_READY: { + GstElementState state; + g_assert(!polypsink->stream); + + state = gst_element_get_state(GST_ELEMENT(polypsink)); + if (state == GST_STATE_PAUSED || state == GST_STATE_PLAYING) + create_stream(polypsink); + + break; + } + + case PA_CONTEXT_FAILED: + GST_ELEMENT_ERROR(GST_ELEMENT(polypsink), RESOURCE, BUSY, ("Connection failed: %s", pa_strerror(pa_context_errno(c))), (NULL)); + + /* Pass over */ + case PA_CONTEXT_TERMINATED: + default: + g_message("TERMINATED"); + polypsink->mainloop_api->quit(polypsink->mainloop_api, 1); + destroy_context(polypsink); + break; + } +} + +static void create_stream(GstPolypSink *polypsink) { + char t[256]; + g_assert(polypsink); + + if (polypsink->stream) + return; + + if (!polypsink->context) { + create_context(polypsink); + return; + } + + if (!polypsink->negotiated) + return; + + if (pa_context_get_state(polypsink->context) != PA_CONTEXT_READY) + return; + + g_message("creating stream"); + + pa_sample_spec_snprint(t, sizeof(t), &polypsink->sample_spec); + + polypsink->stream = pa_stream_new(polypsink->context, "gstreamer output", &polypsink->sample_spec); + g_assert(polypsink->stream); + + pa_stream_set_state_callback(polypsink->stream, stream_state_callback, polypsink); + pa_stream_set_write_callback(polypsink->stream, stream_write_callback, polypsink); + pa_stream_connect_playback(polypsink->stream, NULL, NULL); +} + +static void create_context(GstPolypSink *polypsink) { + g_assert(polypsink); + + if (polypsink->context) + return; + + g_message("creating context"); + + polypsink->context = pa_context_new(polypsink->mainloop_api, "gstreamer"); + g_assert(polypsink->context); + + pa_context_set_state_callback(polypsink->context, context_state_callback, polypsink); + pa_context_connect(polypsink->context, NULL); +} + +static void destroy_stream(GstPolypSink *polypsink) { + g_assert(polypsink); + + if (polypsink->stream) { + struct pa_stream *s = polypsink->stream; + polypsink->stream = NULL; + pa_stream_set_state_callback(s, NULL, NULL); + pa_stream_set_write_callback(s, NULL, NULL); + pa_stream_unref(s); + + g_message("destroying stream"); + } +} + +static void destroy_context(GstPolypSink *polypsink) { + destroy_stream(polypsink); + + if (polypsink->context) { + struct pa_context *c = polypsink->context; + polypsink->context = NULL; + pa_context_set_state_callback(c, NULL, NULL); + pa_context_unref(c); + + g_message("destroying context"); + } +} + +static void gst_polypsink_chain(GstPad *pad, GstData *data) { + GstPolypSink *polypsink = GST_POLYPSINK(gst_pad_get_parent(pad)); + + g_assert(!polypsink->buffer); + +/* g_message("chain-entry"); */ + + if (GST_IS_EVENT(data)) { + GstEvent *event = GST_EVENT(data); + + switch (GST_EVENT_TYPE(event)) { + case GST_EVENT_EOS: + g_message("EOS"); + if (polypsink->stream) { + struct pa_operation *o; + + pa_operation_unref(pa_stream_cork(polypsink->stream, 0, NULL, NULL)); + o = pa_stream_drain(polypsink->stream, NULL, NULL); + + /* drain now */ + while (pa_operation_get_state(o) == PA_OPERATION_RUNNING) { + if (pa_mainloop_iterate(polypsink->mainloop, 1, NULL) < 0) + return; + } + + pa_operation_unref(o); + } + + break; + case GST_EVENT_FLUSH: + g_message("FLUSH"); + if (polypsink->stream) + pa_operation_unref(pa_stream_flush(polypsink->stream, NULL, NULL)); + break; + + default: + g_message("other event: %i", GST_EVENT_TYPE(event)); + break; + } + + gst_pad_event_default(polypsink->sinkpad, event); + } else { + size_t l; + polypsink->buffer = GST_BUFFER(data); + polypsink->buffer_index = 0; + polypsink->counter += GST_BUFFER_SIZE(polypsink->buffer); + + if (polypsink->stream && (l = pa_stream_writable_size(polypsink->stream)) > 0) + do_write(polypsink, l); + } + + while (polypsink->context && (pa_context_is_pending(polypsink->context) || polypsink->buffer)) { +/* g_message("iterate start %i %i", !!pa_context_is_pending(polypsink->context), !!polypsink->buffer); */ + + if (pa_mainloop_iterate(polypsink->mainloop, 1, NULL) < 0) + return; + +/* g_message("iterate stop"); */ + } + +/* g_message("chain-exit"); */ +} + +/* static void stream_get_latency_callback(struct pa_stream *s, const struct pa_latency_info *i, void *userdata) { */ +/* GstPolypSink *polypsink = (GstPolypSink*) userdata; */ + +/* polypsink->latency = i->buffer_usec + i->sink_usec; */ +/* } */ + +/* static GstClockTime gst_polypsink_get_time(GstClock *clock, gpointer data) { */ +/* struct pa_operation *o; */ +/* GstPolypSink *polypsink = GST_POLYPSINK(data); */ +/* GstClockTime r, l; */ + +/* if (!polypsink->stream || pa_stream_get_state(polypsink->stream) != PA_STREAM_READY) */ +/* return 0; */ + +/* polypsink->latency = 0; */ + +/* o = pa_stream_get_latency(polypsink_>stream, latency_func, polypsink); */ +/* g_assert(o); */ + +/* while (pa_operation_get_state(o) == PA_OPERATION_RUNNING) { */ +/* if (pa_mainloop_iterate(polypsink->mainloop, 1, NULL) < 0) */ +/* return; */ +/* } */ + +/* r = ((GstClockTime) polypsink->counter / pa_frame_size(&polypsink->sample_spec))*GST_SECOND/polypsink->sample_spec.rate; */ +/* l = polypsink->latency*GST_USECOND; */ + +/* return r > l ? r - l : 0; */ +/* } */ + +/* static GstClock *gst_polypsink_get_clock(GstElement * element) { */ +/* GstPolypSink *polypsink = GST_POLYPSINK (element); */ +/* return GST_CLOCK (polypsink->provided_clock); */ +/* } */ + +/* static void gst_polypsink_set_clock (GstElement * element, GstClock * clock) { */ +/* GstPolypSink *polypsink = GST_POLYPSINK (element); */ +/* polypsink->clock = clock; */ +/* } */ + +static GstPadLinkReturn gst_polypsink_link(GstPad *pad, const GstCaps *caps) { + int depth = 16, endianness = 1234; + gboolean sign = TRUE; + GstPolypSink *polypsink; + GstStructure *structure; + const char *n; + char t[256]; + GstElementState state; + + polypsink = GST_POLYPSINK(gst_pad_get_parent(pad)); + + g_message("link: %p", polypsink); + + structure = gst_caps_get_structure(caps, 0); + + if (!(gst_structure_get_int(structure, "depth", &depth))) + gst_structure_get_int(structure, "width", &depth); + + gst_structure_get_int(structure, "endianness", &endianness); + gst_structure_get_boolean(structure, "signed", &sign); + + n = gst_structure_get_name(structure); + + if (depth == 16 && endianness == 1234 && sign && !strcmp(n, "audio/x-raw-int")) + polypsink->sample_spec.format = PA_SAMPLE_S16LE; + else if (depth == 16 && endianness == 4321 && sign && !strcmp(n, "audio/x-raw-int")) + polypsink->sample_spec.format = PA_SAMPLE_S16BE; + else if (depth == 8 && !sign && !strcmp(n, "audio/x-raw-int")) + polypsink->sample_spec.format = PA_SAMPLE_U8; + else if (depth == 32 && endianness == 1234 && !strcmp(n, "audio/x-raw-float")) + polypsink->sample_spec.format = PA_SAMPLE_FLOAT32LE; + else if (depth == 32 && endianness == 4321 && !strcmp(n, "audio/x-raw-float")) + polypsink->sample_spec.format = PA_SAMPLE_FLOAT32LE; + else + return GST_PAD_LINK_REFUSED; + + polypsink->sample_spec.rate = 44100; + polypsink->sample_spec.channels = 2; + + pa_sample_spec_snprint(t, sizeof(t), &polypsink->sample_spec); + g_message("using %s", t); + + gst_structure_get_int(structure, "channels", (int*) &polypsink->sample_spec.channels); + gst_structure_get_int(structure, "rate", &polypsink->sample_spec.rate); + + pa_sample_spec_snprint(t, sizeof(t), &polypsink->sample_spec); + g_message("using %s", t); + + if (!pa_sample_spec_valid(&polypsink->sample_spec)) + return GST_PAD_LINK_REFUSED; + + + + polypsink->negotiated = 1; + + destroy_stream(polypsink); + + state = gst_element_get_state(GST_ELEMENT(polypsink)); + if (state == GST_STATE_PAUSED || state == GST_STATE_PLAYING) + create_stream(polypsink); + + return GST_PAD_LINK_OK; +} + + +static void gst_polypsink_init(GTypeInstance* instance, gpointer g_class) { + GstPolypSink *polypsink = GST_POLYPSINK(instance); + + g_message("created: %p", polypsink); + + polypsink->sinkpad = gst_pad_new_from_template(gst_element_class_get_pad_template(GST_ELEMENT_GET_CLASS (instance), "sink"), "sink"); + + gst_element_add_pad(GST_ELEMENT(polypsink), polypsink->sinkpad); + gst_pad_set_chain_function(polypsink->sinkpad, gst_polypsink_chain); + gst_pad_set_link_function(polypsink->sinkpad, gst_polypsink_link); + +/* GST_FLAG_SET(polypsink, GST_ELEMENT_THREAD_SUGGESTED); */ + GST_FLAG_SET(polypsink, GST_ELEMENT_EVENT_AWARE); + + polypsink->context = NULL; + polypsink->stream = NULL; + + polypsink->mainloop = pa_mainloop_new(); + g_assert(polypsink->mainloop); + + polypsink->mainloop_api = pa_mainloop_get_api(polypsink->mainloop); + + polypsink->sample_spec.rate = 0; + polypsink->sample_spec.channels = 0; + polypsink->sample_spec.format = 0; + + polypsink->negotiated = 0; + + polypsink->buffer = NULL; + polypsink->buffer_index = 0; + + polypsink->latency = 0; + polypsink->counter = 0; +} + +static void gst_polypsink_dispose(GObject *object) { + GstPolypSink *polypsink = GST_POLYPSINK(object); + +/* gst_object_unparent(GST_OBJECT(polypsink->provided_clock)); */ + + + destroy_context(polypsink); + + if (polypsink->buffer) + gst_buffer_unref(polypsink->buffer); + + + g_free(polypsink->server); + g_free(polypsink->sink); + + pa_mainloop_free(polypsink->mainloop); + + G_OBJECT_CLASS(parent_class)->dispose(object); + + g_message("destroyed: %p", polypsink); +} + +static void gst_polypsink_class_init(gpointer g_class, gpointer class_data) { + GObjectClass *gobject_class = G_OBJECT_CLASS(g_class); + GstElementClass *gstelement_class = GST_ELEMENT_CLASS(g_class); + + parent_class = g_type_class_peek_parent(g_class); + + g_object_class_install_property(gobject_class, ARG_SERVER, g_param_spec_string("server", "server", "server", NULL, G_PARAM_READWRITE)); + g_object_class_install_property(gobject_class, ARG_SINK, g_param_spec_string("sink", "sink", "sink", NULL, G_PARAM_READWRITE)); + + gobject_class->set_property = gst_polypsink_set_property; + gobject_class->get_property = gst_polypsink_get_property; + gobject_class->dispose = gst_polypsink_dispose; + + gstelement_class->change_state = gst_polypsink_change_state; +/* gstelement_class->set_clock = gst_polypsink_set_clock; */ +/* gstelement_class->get_clock = gst_polypsink_get_clock; */ +} + + +gboolean gst_polypsink_factory_init(GstPlugin *plugin) { + return gst_element_register(plugin, "polypsink", GST_RANK_NONE, GST_TYPE_POLYPSINK); +} + +GType gst_polypsink_get_type(void) { + static GType polypsink_type = 0; + + if (!polypsink_type) { + + static const GTypeInfo polypsink_info = { + sizeof (GstPolypSinkClass), + gst_polypsink_base_init, + NULL, + gst_polypsink_class_init, + NULL, + NULL, + sizeof(GstPolypSink), + 0, + gst_polypsink_init, + }; + + polypsink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstPolypSink", &polypsink_info, 0); + } + + return polypsink_type; +} |