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pulsesink: handle pull-based scheduling

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Use the default basesink methods for implementing pull based scheduling, it
works fine for us.
This commit is contained in:
Wim Taymans 2009-04-09 13:14:14 +02:00
parent 8855ed90c0
commit 2e2f1d73ca
1 changed files with 11 additions and 118 deletions
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129
ext/pulse/pulsesink.c
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@ -125,8 +125,6 @@ static gboolean gst_pulseringbuffer_release (GstRingBuffer * buf);
static gboolean gst_pulseringbuffer_start (GstRingBuffer * buf);
static gboolean gst_pulseringbuffer_pause (GstRingBuffer * buf);
static gboolean gst_pulseringbuffer_stop (GstRingBuffer * buf);
static gboolean gst_pulseringbuffer_activate (GstRingBuffer * buf,
gboolean active);
static guint gst_pulseringbuffer_commit (GstRingBuffer * buf,
guint64 * sample, guchar * data, gint in_samples, gint out_samples,
gint * accum);
@ -186,8 +184,6 @@ gst_pulseringbuffer_class_init (GstPulseRingBufferClass * klass)
gstringbuffer_class->resume = GST_DEBUG_FUNCPTR (gst_pulseringbuffer_start);
gstringbuffer_class->stop = GST_DEBUG_FUNCPTR (gst_pulseringbuffer_stop);
gstringbuffer_class->activate =
GST_DEBUG_FUNCPTR (gst_pulseringbuffer_activate);
gstringbuffer_class->commit = GST_DEBUG_FUNCPTR (gst_pulseringbuffer_commit);
}
@ -470,99 +466,6 @@ gst_pulsering_stream_state_cb (pa_stream * s, void *userdata)
}
}
static void
gst_pulsering_pull (GstPulseSink * psink, GstPulseRingBuffer * pbuf)
{
GstBaseSink *basesink;
GstBaseAudioSink *sink;
GstBuffer *buf;
GstRingBuffer *rbuf;
GstFlowReturn ret;
guint len;
basesink = GST_BASE_SINK (psink);
sink = GST_BASE_AUDIO_SINK (psink);
rbuf = GST_RING_BUFFER_CAST (pbuf);
GST_PAD_STREAM_LOCK (basesink->sinkpad);
len = 882;
/* would be nice to arrange for pad_alloc_buffer to return data -- as it is we
will copy twice, once into data, once into DMA */
GST_LOG_OBJECT (basesink, "pulling %d bytes offset %" G_GUINT64_FORMAT
" to fill audio buffer", len, basesink->offset);
ret =
gst_pad_pull_range (basesink->sinkpad, basesink->segment.last_stop, len,
&buf);
if (ret != GST_FLOW_OK) {
if (ret == GST_FLOW_UNEXPECTED)
goto eos;
else
goto error;
}
GST_PAD_PREROLL_LOCK (basesink->sinkpad);
if (basesink->flushing)
goto flushing;
/* complete preroll and wait for PLAYING */
ret = gst_base_sink_do_preroll (basesink, GST_MINI_OBJECT_CAST (buf));
if (ret != GST_FLOW_OK)
goto preroll_error;
if (len != GST_BUFFER_SIZE (buf)) {
GST_INFO_OBJECT (basesink,
"got different size than requested from sink pad: %u != %u", len,
GST_BUFFER_SIZE (buf));
len = MIN (GST_BUFFER_SIZE (buf), len);
}
basesink->segment.last_stop += len;
GST_PAD_PREROLL_UNLOCK (basesink->sinkpad);
GST_PAD_STREAM_UNLOCK (basesink->sinkpad);
return;
error:
{
GST_WARNING_OBJECT (basesink, "Got flow '%s' but can't return it: %d",
gst_flow_get_name (ret), ret);
gst_ring_buffer_pause (rbuf);
GST_PAD_STREAM_UNLOCK (basesink->sinkpad);
return;
}
eos:
{
/* FIXME: this is not quite correct; we'll be called endlessly until
* the sink gets shut down; maybe we should set a flag somewhere, or
* set segment.stop and segment.duration to the last sample or so */
GST_DEBUG_OBJECT (sink, "EOS");
gst_ring_buffer_pause (rbuf);
gst_element_post_message (GST_ELEMENT_CAST (sink),
gst_message_new_eos (GST_OBJECT_CAST (sink)));
GST_PAD_STREAM_UNLOCK (basesink->sinkpad);
}
flushing:
{
GST_DEBUG_OBJECT (sink, "we are flushing");
gst_ring_buffer_pause (rbuf);
GST_PAD_PREROLL_UNLOCK (basesink->sinkpad);
GST_PAD_STREAM_UNLOCK (basesink->sinkpad);
return;
}
preroll_error:
{
GST_DEBUG_OBJECT (sink, "error %s", gst_flow_get_name (ret));
gst_ring_buffer_pause (rbuf);
GST_PAD_PREROLL_UNLOCK (basesink->sinkpad);
GST_PAD_STREAM_UNLOCK (basesink->sinkpad);
return;
}
}
static void
gst_pulsering_stream_request_cb (pa_stream * s, size_t length, void *userdata)
{
@ -574,10 +477,8 @@ gst_pulsering_stream_request_cb (pa_stream * s, size_t length, void *userdata)
GST_LOG_OBJECT (psink, "got request for length %" G_GSIZE_FORMAT, length);
if (GST_RING_BUFFER_CAST (pbuf)->callback) {
/* in pull mode */
gst_pulsering_pull (psink, pbuf);
} else if (pbuf->in_commit) {
if (pbuf->in_commit) {
/* only signal when we are waiting in the commit thread */
pa_threaded_mainloop_signal (psink->mainloop, 0);
}
}
@ -787,20 +688,6 @@ gst_pulseringbuffer_release (GstRingBuffer * buf)
return TRUE;
}
/* this method should start the thread that starts pulling data. Usually only
* used in pull-based scheduling */
static gboolean
gst_pulseringbuffer_activate (GstRingBuffer * buf, gboolean active)
{
GstPulseSink *psink;
psink = GST_PULSESINK_CAST (GST_OBJECT_PARENT (buf));
GST_DEBUG_OBJECT (psink, "activating");
return TRUE;
}
static void
gst_pulsering_success_cb (pa_stream * s, int success, void *userdata)
{
@ -1354,6 +1241,7 @@ gst_pulsesink_class_init (GstPulseSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS (klass);
GstBaseSinkClass *bc;
GstBaseAudioSinkClass *gstaudiosink_class = GST_BASE_AUDIO_SINK_CLASS (klass);
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_pulsesink_finalize);
@ -1362,6 +1250,10 @@ gst_pulsesink_class_init (GstPulseSinkClass * klass)
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_pulsesink_event);
/* restore the original basesink pull methods */
bc = g_type_class_peek (GST_TYPE_BASE_SINK);
gstbasesink_class->activate_pull = GST_DEBUG_FUNCPTR (bc->activate_pull);
gstaudiosink_class->create_ringbuffer =
GST_DEBUG_FUNCPTR (gst_pulsesink_create_ringbuffer);
@ -1435,9 +1327,10 @@ gst_pulsesink_init (GstPulseSink * pulsesink, GstPulseSinkClass * klass)
g_assert ((pulsesink->mainloop = pa_threaded_mainloop_new ()));
g_assert (pa_threaded_mainloop_start (pulsesink->mainloop) == 0);
GST_BASE_SINK (pulsesink)->can_activate_pull = TRUE;
pulsesink->probe = gst_pulseprobe_new (G_OBJECT (pulsesink), G_OBJECT_GET_CLASS (pulsesink), PROP_DEVICE, pulsesink->device, TRUE, FALSE); /* TRUE for sinks, FALSE for sources */
/* TRUE for sinks, FALSE for sources */
pulsesink->probe = gst_pulseprobe_new (G_OBJECT (pulsesink),
G_OBJECT_GET_CLASS (pulsesink), PROP_DEVICE, pulsesink->device,
TRUE, FALSE);
/* override with a custom clock */
if (GST_BASE_AUDIO_SINK (pulsesink)->provided_clock)