static void
send_flush_on_unlink (GstPad * pad, GstPad * peer, gpointer user_data)
{
if (GST_OBJECT_FLAG_IS_SET (pad, GST_PAD_FLAG_EOS)) {
gst_pad_send_event (pad, gst_event_new_flush_start ());
gst_pad_send_event (pad, gst_event_new_flush_stop (FALSE));
}
}
static HRESULT WINAPI Gstreamer_transform_BeginFlush(TransformFilter *iface)
{
GstTfImpl *This = (GstTfImpl*)iface;
TRACE("%p\n", This);
mark_wine_thread();
gst_pad_push_event(This->my_src, gst_event_new_flush_start());
return S_OK;
}
static VALUE
flush_start_initialize(VALUE self)
{
GstEvent *event;
event = gst_event_new_flush_start();
G_INITIALIZE(self, event);
return Qnil;
}
static gboolean
gst_frei0r_mixer_src_event (GstPad * pad, GstEvent * event)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
gboolean ret = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:
/* QoS might be tricky */
ret = FALSE;
break;
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
/* parse the seek parameters */
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL, NULL);
/* check if we are flushing */
if (flags & GST_SEEK_FLAG_FLUSH) {
/* make sure we accept nothing anymore and return WRONG_STATE */
gst_collect_pads_set_flushing (self->collect, TRUE);
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP. */
gst_pad_push_event (self->src, gst_event_new_flush_start ());
}
ret = forward_event (self, event);
break;
}
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
ret = FALSE;
break;
default:
/* just forward the rest for now */
ret = forward_event (self, event);
break;
}
gst_object_unref (self);
return ret;
}
static void
distribute_running_time (GstElement * element, const GstSegment * segment)
{
GstEvent *event;
GstPad *pad;
pad = gst_element_get_static_pad (element, "sink");
gst_pad_send_event (pad, gst_event_new_flush_start ());
gst_pad_send_event (pad, gst_event_new_flush_stop (FALSE));
if (segment->format != GST_FORMAT_UNDEFINED) {
event = gst_event_new_segment (segment);
gst_pad_send_event (pad, event);
}
gst_object_unref (pad);
}
static void
kms_element_release_pad (GstElement * element, GstPad * pad)
{
GstElement *agnosticbin;
GstPad *target;
GstPad *peer;
if (g_str_has_prefix (GST_OBJECT_NAME (pad), "audio_src")) {
agnosticbin = KMS_ELEMENT (element)->priv->audio_agnosticbin;
} else if (g_str_has_prefix (GST_OBJECT_NAME (pad), "video_src")) {
agnosticbin = KMS_ELEMENT (element)->priv->video_agnosticbin;
} else {
return;
}
// TODO: Remove pad if is a sinkpad
target = gst_ghost_pad_get_target (GST_GHOST_PAD (pad));
if (target != NULL) {
if (agnosticbin != NULL) {
gst_element_release_request_pad (agnosticbin, target);
}
g_object_unref (target);
}
peer = gst_pad_get_peer (pad);
gst_pad_push_event (pad, gst_event_new_flush_start ());
if (GST_STATE (element) >= GST_STATE_PAUSED
|| GST_STATE_PENDING (element) >= GST_STATE_PAUSED) {
gst_pad_set_active (pad, FALSE);
}
if (peer) {
gst_pad_send_event (peer, gst_event_new_flush_stop (FALSE));
g_object_unref (peer);
}
gst_element_remove_pad (element, pad);
}
static void
kms_element_set_target_on_linked (GstPad * pad, GstPad * peer,
GstElement * element)
{
GstPad *target;
target = gst_element_get_request_pad (element, "src_%u");
if (GST_PAD_IS_FLUSHING (peer)) {
gst_pad_send_event (peer, gst_event_new_flush_start ());
gst_pad_send_event (peer, gst_event_new_flush_stop (FALSE));
}
GST_DEBUG_OBJECT (pad, "Setting target %" GST_PTR_FORMAT, target);
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (pad), target)) {
GST_ERROR_OBJECT (pad, "Can not set target pad");
}
g_object_unref (target);
}
static gboolean
gst_frei0r_mixer_src_event (GstPad * pad, GstObject * object, GstEvent * event)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (object);
gboolean ret = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:
/* QoS might be tricky */
ret = FALSE;
break;
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
/* parse the seek parameters */
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL, NULL);
/* check if we are flushing */
if (flags & GST_SEEK_FLAG_FLUSH) {
/* make sure we accept nothing anymore and return WRONG_STATE */
gst_collect_pads_set_flushing (self->collect, TRUE);
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP. */
gst_pad_push_event (self->src, gst_event_new_flush_start ());
}
ret = gst_pad_event_default (pad, GST_OBJECT (self), event);
break;
}
default:
ret = gst_pad_event_default (pad, GST_OBJECT (self), event);
break;
}
return ret;
}
static gboolean
gst_timidity_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = FALSE;
GstTimidity *timidity = GST_TIMIDITY (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (pad, "%s event received", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat src_format, dst_format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 orig_start, start, stop;
gboolean flush, update;
if (!timidity->song)
break;
gst_event_parse_seek (event, &rate, &src_format, &flags,
&start_type, &orig_start, &stop_type, &stop);
dst_format = GST_FORMAT_DEFAULT;
gst_timidity_src_convert (timidity, src_format, orig_start,
&dst_format, &start);
gst_timidity_src_convert (timidity, src_format, stop, &dst_format, &stop);
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
if (flush) {
GST_DEBUG ("performing flush");
gst_pad_push_event (timidity->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (timidity->sinkpad);
}
GST_PAD_STREAM_LOCK (timidity->sinkpad);
if (flush) {
gst_pad_push_event (timidity->srcpad, gst_event_new_flush_stop ());
}
gst_segment_set_seek (timidity->o_segment, rate, dst_format, flags,
start_type, start, stop_type, stop, &update);
if ((flags && GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
GST_DEBUG_OBJECT (timidity, "received segment seek %d, %d",
(gint) start_type, (gint) stop_type);
} else {
GST_DEBUG_OBJECT (timidity, "received normal seek %d",
(gint) start_type);
update = FALSE;
}
gst_pad_push_event (timidity->srcpad,
gst_timidity_get_new_segment_event (timidity, GST_FORMAT_TIME,
update));
timidity->o_seek = TRUE;
gst_pad_start_task (timidity->sinkpad,
(GstTaskFunction) gst_timidity_loop, timidity->sinkpad);
GST_PAD_STREAM_UNLOCK (timidity->sinkpad);
GST_DEBUG ("seek done");
}
res = TRUE;
break;
default:
break;
}
g_object_unref (timidity);
return res;
}
static gboolean
gst_wildmidi_do_seek (GstWildmidi * wildmidi, GstEvent * event)
{
gdouble rate;
GstFormat src_format, dst_format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean flush, update;
#ifdef HAVE_WILDMIDI_0_2_2
gboolean accurate;
#endif
gboolean res;
unsigned long int sample;
GstSegment *segment;
if (!wildmidi->song)
return FALSE;
gst_event_parse_seek (event, &rate, &src_format, &flags,
&start_type, &start, &stop_type, &stop);
/* convert the input format to samples */
dst_format = GST_FORMAT_DEFAULT;
res = TRUE;
if (start_type != GST_SEEK_TYPE_NONE) {
res =
gst_wildmidi_src_convert (wildmidi, src_format, start, &dst_format,
&start);
}
if (res && stop_type != GST_SEEK_TYPE_NONE) {
res =
gst_wildmidi_src_convert (wildmidi, src_format, stop, &dst_format,
&stop);
}
/* unsupported format */
if (!res)
return res;
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
#ifdef HAVE_WILDMIDI_0_2_2
accurate = ((flags & GST_SEEK_FLAG_ACCURATE) == GST_SEEK_FLAG_ACCURATE);
#endif
if (flush) {
GST_DEBUG ("performing flush");
gst_pad_push_event (wildmidi->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (wildmidi->sinkpad);
}
segment = wildmidi->o_segment;
GST_PAD_STREAM_LOCK (wildmidi->sinkpad);
if (flush) {
gst_pad_push_event (wildmidi->srcpad, gst_event_new_flush_stop (TRUE));
}
/* update the segment now */
gst_segment_do_seek (segment, rate, dst_format, flags,
start_type, start, stop_type, stop, &update);
/* we need to seek to position in the segment now, sample will be updated */
sample = segment->position;
GST_OBJECT_LOCK (wildmidi);
#ifdef HAVE_WILDMIDI_0_2_2
if (accurate) {
WildMidi_SampledSeek (wildmidi->song, &sample);
} else {
WildMidi_FastSeek (wildmidi->song, &sample);
}
#else
WildMidi_FastSeek (wildmidi->song, &sample);
#endif
GST_OBJECT_UNLOCK (wildmidi);
segment->start = segment->time = segment->position = sample;
gst_pad_push_event (wildmidi->srcpad,
gst_wildmidi_get_new_segment_event (wildmidi, GST_FORMAT_TIME));
gst_pad_start_task (wildmidi->sinkpad,
(GstTaskFunction) gst_wildmidi_loop, wildmidi->sinkpad, NULL);
wildmidi->discont = TRUE;
GST_PAD_STREAM_UNLOCK (wildmidi->sinkpad);
GST_DEBUG ("seek done");
return TRUE;
}
static GstFlowReturn
new_sample_cb (GstElement * appsink, gpointer user_data)
{
GstElement *appsrc = GST_ELEMENT (user_data);
GstFlowReturn ret;
GstSample *sample;
GstBuffer *buffer;
GstClockTime *base_time;
GstPad *src, *sink;
g_signal_emit_by_name (appsink, "pull-sample", &sample);
if (sample == NULL)
return GST_FLOW_OK;
buffer = gst_sample_get_buffer (sample);
if (buffer == NULL) {
ret = GST_FLOW_OK;
goto end;
}
gst_buffer_ref (buffer);
buffer = gst_buffer_make_writable (buffer);
KMS_ELEMENT_LOCK (GST_OBJECT_PARENT (appsrc));
base_time =
g_object_get_data (G_OBJECT (GST_OBJECT_PARENT (appsrc)), BASE_TIME_DATA);
if (base_time == NULL) {
GstClock *clock;
clock = gst_element_get_clock (appsrc);
base_time = g_slice_new0 (GstClockTime);
g_object_set_data_full (G_OBJECT (GST_OBJECT_PARENT (appsrc)),
BASE_TIME_DATA, base_time, release_gst_clock);
*base_time =
gst_clock_get_time (clock) - gst_element_get_base_time (appsrc);
g_object_unref (clock);
GST_DEBUG ("Setting base time to: %" G_GUINT64_FORMAT, *base_time);
}
src = gst_element_get_static_pad (appsrc, "src");
sink = gst_pad_get_peer (src);
if (sink != NULL) {
if (GST_OBJECT_FLAG_IS_SET (sink, GST_PAD_FLAG_EOS)) {
GST_INFO_OBJECT (sink, "Sending flush events");
gst_pad_send_event (sink, gst_event_new_flush_start ());
gst_pad_send_event (sink, gst_event_new_flush_stop (FALSE));
}
g_object_unref (sink);
}
g_object_unref (src);
if (GST_BUFFER_PTS_IS_VALID (buffer))
buffer->pts += *base_time;
if (GST_BUFFER_DTS_IS_VALID (buffer))
buffer->dts += *base_time;
KMS_ELEMENT_UNLOCK (GST_OBJECT_PARENT (appsrc));
// TODO: Do something to fix a possible previous EOS event
g_signal_emit_by_name (appsrc, "push-buffer", buffer, &ret);
gst_buffer_unref (buffer);
if (ret != GST_FLOW_OK) {
/* something wrong */
GST_ERROR ("Could not send buffer to appsrc %s. Cause: %s",
GST_ELEMENT_NAME (appsrc), gst_flow_get_name (ret));
}
end:
if (sample != NULL)
gst_sample_unref (sample);
return ret;
}
static GstFlowReturn
gst_tcp_mix_src_pad_read (GstTCPMixSrcPad * pad, GstBuffer ** outbuf)
{
GstTCPMixSrc *src = GST_TCP_MIX_SRC (GST_PAD_PARENT (pad));
gssize avail, receivedBytes;
GstMapInfo map;
GError *err = NULL;
/* if we have a client, wait for read */
GST_LOG_OBJECT (pad, "asked for a buffer");
if (!pad->client) {
if (src->mode == MODE_LOOP)
goto loop_read;
else
goto no_client;
}
/* read the buffer header */
read_available_bytes:
avail = g_socket_get_available_bytes (pad->client);
if (avail < 0) {
goto socket_get_available_bytes_error;
} else if (avail == 0) {
GIOCondition condition;
if (!g_socket_condition_wait (pad->client,
G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP, pad->cancellable, &err))
goto socket_condition_wait_error;
condition = g_socket_condition_check (pad->client,
G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP);
if ((condition & G_IO_ERR))
goto socket_condition_error;
else if ((condition & G_IO_HUP))
goto socket_condition_hup;
avail = g_socket_get_available_bytes (pad->client);
if (avail < 0)
goto socket_get_available_bytes_error;
}
if (0 < avail) {
gsize readBytes = MIN (avail, MAX_READ_SIZE);
*outbuf = gst_buffer_new_and_alloc (readBytes);
gst_buffer_map (*outbuf, &map, GST_MAP_READWRITE);
receivedBytes = g_socket_receive (pad->client, (gchar *) map.data,
readBytes, pad->cancellable, &err);
} else {
/* Connection closed */
receivedBytes = 0;
*outbuf = NULL;
}
if (receivedBytes == 0)
goto socket_connection_closed;
else if (receivedBytes < 0)
goto socket_receive_error;
gst_buffer_unmap (*outbuf, &map);
gst_buffer_resize (*outbuf, 0, receivedBytes);
#if 0
GST_LOG_OBJECT (pad,
"Returning buffer from _get of size %" G_GSIZE_FORMAT
", ts %" GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT
", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT,
gst_buffer_get_size (*outbuf),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*outbuf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (*outbuf)),
GST_BUFFER_OFFSET (*outbuf), GST_BUFFER_OFFSET_END (*outbuf));
#endif
g_clear_error (&err);
return GST_FLOW_OK;
/* Handling Errors */
no_client:
{
GST_ELEMENT_ERROR (pad, RESOURCE, READ, (NULL),
("No client socket (%s)", GST_PAD_NAME (pad)));
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_ERROR;
}
socket_get_available_bytes_error:
{
GST_ELEMENT_ERROR (pad, RESOURCE, READ, (NULL),
("Failed to get available bytes from socket"));
gst_tcp_mix_src_pad_reset (pad);
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_ERROR;
}
socket_condition_wait_error:
{
GST_ELEMENT_ERROR (pad, RESOURCE, READ, (NULL),
("Select failed: %s", err->message));
g_clear_error (&err);
gst_tcp_mix_src_pad_reset (pad);
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_ERROR;
}
socket_condition_error:
{
GST_ELEMENT_ERROR (pad, RESOURCE, READ, (NULL), ("Socket in error state"));
*outbuf = NULL;
gst_tcp_mix_src_pad_reset (pad);
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_ERROR;
}
socket_condition_hup:
{
GST_DEBUG_OBJECT (pad, "Connection closed");
*outbuf = NULL;
gst_tcp_mix_src_pad_reset (pad);
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_EOS;
}
socket_connection_closed:
{
GST_DEBUG_OBJECT (pad, "Connection closed");
if (*outbuf) {
gst_buffer_unmap (*outbuf, &map);
gst_buffer_unref (*outbuf);
}
*outbuf = NULL;
gst_tcp_mix_src_pad_reset (pad);
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_EOS;
}
socket_receive_error:
{
gst_buffer_unmap (*outbuf, &map);
gst_buffer_unref (*outbuf);
*outbuf = NULL;
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
GST_DEBUG_OBJECT (pad, "Cancelled reading from socket");
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_FLUSHING;
} else {
GST_ELEMENT_ERROR (pad, RESOURCE, READ, (NULL),
("Failed to read from socket: %s", err->message));
if (src->mode == MODE_LOOP)
goto loop_read;
return GST_FLOW_ERROR;
}
}
loop_read:
{
#if 0
GstEvent *event = gst_event_new_flush_start ();
if (!gst_pad_push_event (pad, event)) {
GST_ERROR_OBJECT (src, "Failed to flush data on %s.%s",
GST_ELEMENT_NAME (src), GST_PAD_NAME (pad));
}
#endif
#if 0
GST_DEBUG_OBJECT (pad, "Looping");
#endif
if (src->fill == FILL_NONE) {
gst_tcp_mix_src_pad_wait_for_client (pad);
goto read_available_bytes;
}
enum
{ buffer_size = 1024 };
*outbuf = gst_buffer_new_and_alloc (buffer_size);
switch (src->fill) {
case FILL_ZERO:
break;
case FILL_RAND:
{
guchar *p;
gst_buffer_map (*outbuf, &map, GST_MAP_READWRITE);
for (p = map.data; p < map.data + buffer_size; p += 4) {
*((int *) p) = rand ();
}
} break;
}
return GST_FLOW_OK;
}
}
static void
helper (gboolean flush)
{
GstElement *filter;
GstBus *bus;
GstPad *mysrcpad;
GstPad *mysinkpad;
/* init */
filter = gst_check_setup_element ("omx_dummy");
mysrcpad = gst_check_setup_src_pad (filter, &srctemplate, NULL);
mysinkpad = gst_check_setup_sink_pad (filter, &sinktemplate, NULL);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
/* need to know when we are eos */
gst_pad_set_event_function (mysinkpad, test_sink_event);
/* and notify the test run */
eos_mutex = g_mutex_new ();
eos_cond = g_cond_new ();
eos_arrived = FALSE;
g_object_set (G_OBJECT (filter), "library-name", "libomxil-foo.so", NULL);
/* start */
fail_unless_equals_int (gst_element_set_state (filter, GST_STATE_PLAYING),
GST_STATE_CHANGE_SUCCESS);
bus = gst_bus_new ();
gst_element_set_bus (filter, bus);
/* send buffers in order*/
{
guint i;
for (i = 0; i < BUFFER_COUNT; i++)
{
GstBuffer *inbuffer;
inbuffer = gst_buffer_new_and_alloc (BUFFER_SIZE);
GST_BUFFER_DATA(inbuffer)[0] = i;
ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
if (flush && i % FLUSH_AT == 0)
{
gst_pad_push_event (mysrcpad, gst_event_new_flush_start ());
gst_pad_push_event (mysrcpad, gst_event_new_flush_stop ());
i += FLUSH_AT;
}
}
}
{
GstMessage *message;
fail_if ((message = gst_bus_pop (bus)) != NULL);
/* make sure there's no error on the bus */
message = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0);
fail_if (message);
}
gst_pad_push_event (mysrcpad, gst_event_new_eos ());
/* need to wait a bit to make sure src pad task digested all and sent eos */
g_mutex_lock (eos_mutex);
while (!eos_arrived)
g_cond_wait (eos_cond, eos_mutex);
g_mutex_unlock (eos_mutex);
/* check the order of the buffers*/
if (!flush)
{
GList *cur;
guint i;
for (cur = buffers, i = 0; cur; cur = g_list_next (cur), i++)
{
GstBuffer *buffer;
buffer = cur->data;
fail_unless (GST_BUFFER_DATA(buffer)[0] == i);
}
fail_unless (i == BUFFER_COUNT);
}
/* cleanup */
gst_bus_set_flushing (bus, TRUE);
gst_element_set_bus (filter, NULL);
gst_object_unref (GST_OBJECT (bus));
gst_check_drop_buffers ();
/* deinit */
gst_element_set_state (filter, GST_STATE_NULL);
gst_pad_set_active (mysrcpad, FALSE);
gst_pad_set_active (mysinkpad, FALSE);
gst_check_teardown_src_pad (filter);
gst_check_teardown_sink_pad (filter);
gst_check_teardown_element (filter);
g_mutex_free (eos_mutex);
g_cond_free (eos_cond);
}
static gboolean
gst_adder_src_event (GstPad * pad, GstEvent * event)
{
GstAdder *adder;
gboolean result;
adder = GST_ADDER (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (pad, "Got %s event on src pad from %s",
GST_EVENT_TYPE_NAME (event), GST_OBJECT_NAME (GST_EVENT_SRC (event)));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
GstSeekType curtype, endtype;
gint64 cur, end;
gboolean flush;
/* parse the seek parameters */
gst_event_parse_seek (event, &adder->segment_rate, NULL, &flags, &curtype,
&cur, &endtype, &end);
if ((curtype != GST_SEEK_TYPE_NONE) && (curtype != GST_SEEK_TYPE_SET)) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek type for start: %d", curtype);
goto done;
}
if ((endtype != GST_SEEK_TYPE_NONE) && (endtype != GST_SEEK_TYPE_SET)) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek type for end: %d", endtype);
goto done;
}
flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
/* check if we are flushing */
if (flush) {
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP.
* Make sure we accept nothing anymore and return WRONG_STATE.
* We send a flush-start before, to ensure no streaming is done
* as we need to take the stream lock.
*/
gst_pad_push_event (adder->srcpad, gst_event_new_flush_start ());
gst_collect_pads2_set_flushing (adder->collect, TRUE);
/* We can't send FLUSH_STOP here since upstream could start pushing data
* after we unlock adder->collect.
* We set flush_stop_pending to TRUE instead and send FLUSH_STOP after
* forwarding the seek upstream or from gst_adder_collected,
* whichever happens first.
*/
g_atomic_int_set (&adder->flush_stop_pending, TRUE);
}
GST_DEBUG_OBJECT (adder, "handling seek event: %" GST_PTR_FORMAT, event);
/* now wait for the collected to be finished and mark a new
* segment. After we have the lock, no collect function is running and no
* new collect function will be called for as long as we're flushing. */
GST_COLLECT_PADS2_STREAM_LOCK (adder->collect);
if (curtype == GST_SEEK_TYPE_SET)
adder->segment_start = cur;
else
adder->segment_start = 0;
if (endtype == GST_SEEK_TYPE_SET)
adder->segment_end = end;
else
adder->segment_end = GST_CLOCK_TIME_NONE;
if (flush) {
/* Yes, we need to call _set_flushing again *WHEN* the streaming threads
* have stopped so that the cookie gets properly updated. */
gst_collect_pads2_set_flushing (adder->collect, TRUE);
}
GST_COLLECT_PADS2_STREAM_UNLOCK (adder->collect);
GST_DEBUG_OBJECT (adder, "forwarding seek event: %" GST_PTR_FORMAT,
event);
/* we're forwarding seek to all upstream peers and wait for one to reply
* with a newsegment-event before we send a newsegment-event downstream */
g_atomic_int_set (&adder->wait_for_new_segment, TRUE);
result = forward_event (adder, event, flush);
if (!result) {
/* seek failed. maybe source is a live source. */
GST_DEBUG_OBJECT (adder, "seeking failed");
}
if (g_atomic_int_compare_and_exchange (&adder->flush_stop_pending,
TRUE, FALSE)) {
GST_DEBUG_OBJECT (adder, "pending flush stop");
gst_pad_push_event (adder->srcpad, gst_event_new_flush_stop ());
}
break;
}
case GST_EVENT_QOS:
/* QoS might be tricky */
result = FALSE;
break;
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
result = FALSE;
break;
default:
/* just forward the rest for now */
GST_DEBUG_OBJECT (adder, "forward unhandled event: %s",
GST_EVENT_TYPE_NAME (event));
result = forward_event (adder, event, FALSE);
break;
}
done:
gst_object_unref (adder);
return result;
}
static gboolean
gst_musepackdec_handle_seek_event (GstMusepackDec * dec, GstEvent * event)
{
GstSeekType start_type, stop_type;
GstSeekFlags flags;
GstSegment segment;
GstFormat format;
gboolean flush;
gdouble rate;
gint64 start, stop;
gint samplerate;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT) {
GST_DEBUG_OBJECT (dec, "seek failed: only TIME or DEFAULT format allowed");
return FALSE;
}
samplerate = g_atomic_int_get (&dec->rate);
if (format == GST_FORMAT_TIME) {
if (start_type != GST_SEEK_TYPE_NONE)
start = gst_util_uint64_scale_int (start, samplerate, GST_SECOND);
if (stop_type != GST_SEEK_TYPE_NONE)
stop = gst_util_uint64_scale_int (stop, samplerate, GST_SECOND);
}
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
if (flush)
gst_pad_push_event (dec->srcpad, gst_event_new_flush_start ());
else
gst_pad_pause_task (dec->sinkpad); /* not _stop_task()? */
GST_PAD_STREAM_LOCK (dec->sinkpad);
/* operate on segment copy until we know the seek worked */
segment = dec->segment;
gst_segment_do_seek (&segment, rate, GST_FORMAT_DEFAULT,
flags, start_type, start, stop_type, stop, NULL);
gst_pad_push_event (dec->sinkpad, gst_event_new_flush_stop (TRUE));
GST_DEBUG_OBJECT (dec, "segment: [%" G_GINT64_FORMAT "-%" G_GINT64_FORMAT
"] = [%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "]",
segment.start, segment.stop,
GST_TIME_ARGS (segment.start * GST_SECOND / dec->rate),
GST_TIME_ARGS (segment.stop * GST_SECOND / dec->rate));
GST_DEBUG_OBJECT (dec, "performing seek to sample %" G_GINT64_FORMAT,
segment.start);
if (segment.start >= segment.duration) {
GST_WARNING_OBJECT (dec, "seek out of bounds");
goto failed;
}
if (mpc_demux_seek_sample (dec->d, segment.start) != MPC_STATUS_OK)
goto failed;
if ((flags & GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
GST_DEBUG_OBJECT (dec, "posting SEGMENT_START message");
gst_element_post_message (GST_ELEMENT (dec),
gst_message_new_segment_start (GST_OBJECT (dec), GST_FORMAT_TIME,
gst_util_uint64_scale_int (segment.start, GST_SECOND, dec->rate)));
}
if (flush) {
gst_pad_push_event (dec->srcpad, gst_event_new_flush_stop (TRUE));
}
segment.position = segment.start;
dec->segment = segment;
gst_musepackdec_send_newsegment (dec);
GST_DEBUG_OBJECT (dec, "seek successful");
gst_pad_start_task (dec->sinkpad,
(GstTaskFunction) gst_musepackdec_loop, dec->sinkpad, NULL);
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return TRUE;
failed:
{
GST_WARNING_OBJECT (dec, "seek failed");
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return FALSE;
}
}
static gboolean
gst_gme_dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstGmeDec *gme = GST_GME_DEC (parent);
gboolean result = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean flush;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
gst_event_unref (event);
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (gme, "seeking is only supported in TIME format");
break;
}
if (start_type != GST_SEEK_TYPE_SET || stop_type != GST_SEEK_TYPE_NONE) {
GST_DEBUG_OBJECT (gme, "unsupported seek type");
break;
}
if (stop_type == GST_SEEK_TYPE_NONE)
stop = GST_CLOCK_TIME_NONE;
if (start_type == GST_SEEK_TYPE_SET) {
GstSegment seg;
guint64 cur = gme_tell (gme->player) * GST_MSECOND;
guint64 dest = (guint64) start;
if (gme->total_duration != GST_CLOCK_TIME_NONE)
dest = CLAMP (dest, 0, gme->total_duration);
else
dest = MAX (0, dest);
if (dest == cur)
break;
flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
if (flush) {
gst_pad_push_event (gme->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (gme->srcpad);
}
GST_PAD_STREAM_LOCK (gme->srcpad);
if (flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT (gme),
gst_message_new_segment_start (GST_OBJECT (gme), format, cur));
}
if (flush) {
gst_pad_push_event (gme->srcpad, gst_event_new_flush_stop (TRUE));
}
if (stop == GST_CLOCK_TIME_NONE
&& gme->total_duration != GST_CLOCK_TIME_NONE)
stop = gme->total_duration;
gst_segment_init (&seg, GST_FORMAT_TIME);
seg.rate = rate;
seg.start = dest;
seg.stop = stop;
seg.time = dest;
gst_pad_push_event (gme->srcpad, gst_event_new_segment (&seg));
gme->seekpoint = dest / GST_MSECOND; /* nsecs to msecs */
gme->seeking = TRUE;
gst_pad_start_task (gme->srcpad, (GstTaskFunction) gst_gme_play,
gme->srcpad, NULL);
GST_PAD_STREAM_UNLOCK (gme->srcpad);
result = TRUE;
}
break;
}
default:
result = gst_pad_push_event (gme->sinkpad, event);
break;
}
return result;
}
static gboolean
gst_spc_dec_src_event (GstPad * pad, GstEvent * event)
{
GstSpcDec *spc = GST_SPC_DEC (gst_pad_get_parent (pad));
gboolean result = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean flush;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (spc, "seeking is only supported in TIME format");
break;
}
if (start_type != GST_SEEK_TYPE_SET || stop_type != GST_SEEK_TYPE_NONE) {
GST_DEBUG_OBJECT (spc, "unsupported seek type");
break;
}
if (stop_type == GST_SEEK_TYPE_NONE)
stop = GST_CLOCK_TIME_NONE;
if (start_type == GST_SEEK_TYPE_SET) {
guint64 cur =
gst_util_uint64_scale (spc->byte_pos, GST_SECOND, 32000 * 2 * 2);
guint64 dest = (guint64) start;
dest = CLAMP (dest, 0, gst_spc_duration (spc) + gst_spc_fadeout (spc));
if (dest == cur)
break;
flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
if (flush) {
gst_pad_push_event (spc->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (spc->srcpad);
}
GST_PAD_STREAM_LOCK (spc->srcpad);
if (flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT (spc),
gst_message_new_segment_start (GST_OBJECT (spc), format, cur));
}
if (flush) {
gst_pad_push_event (spc->srcpad, gst_event_new_flush_stop ());
}
if (stop == GST_CLOCK_TIME_NONE)
stop = (guint64) (gst_spc_duration (spc) + gst_spc_fadeout (spc));
gst_pad_push_event (spc->srcpad, gst_event_new_new_segment (FALSE, rate,
GST_FORMAT_TIME, dest, stop, dest));
/* spc->byte_pos += OSPC_Run(-1, NULL, (unsigned int) (gst_util_uint64_scale(dest - cur, 32000*2*2, GST_SECOND))); */
spc->seekpoint =
gst_util_uint64_scale (dest, 32000 * 2 * 2, GST_SECOND);
spc->seeking = TRUE;
gst_pad_start_task (spc->srcpad, (GstTaskFunction) spc_play,
spc->srcpad);
GST_PAD_STREAM_UNLOCK (spc->srcpad);
result = TRUE;
}
break;
}
default:
break;
}
gst_event_unref (event);
gst_object_unref (spc);
return result;
}
static gboolean
gst_wavpack_parse_handle_seek_event (GstWavpackParse * wvparse,
GstEvent * event)
{
GstSeekFlags seek_flags;
GstSeekType start_type;
GstSeekType stop_type;
GstSegment segment;
GstFormat format;
gboolean only_update;
gboolean flush, ret;
gdouble speed;
gint64 stop;
gint64 start; /* sample we want to seek to */
gint64 byte_offset; /* byte offset the chunk we seek to starts at */
gint64 chunk_start; /* first sample in chunk we seek to */
guint rate;
gint64 last_stop;
if (wvparse->adapter) {
GST_DEBUG_OBJECT (wvparse, "seeking in streaming mode not implemented yet");
return FALSE;
}
gst_event_parse_seek (event, &speed, &format, &seek_flags, &start_type,
&start, &stop_type, &stop);
if (format != GST_FORMAT_DEFAULT && format != GST_FORMAT_TIME) {
GST_DEBUG ("seeking is only supported in TIME or DEFAULT format");
return FALSE;
}
if (speed < 0.0) {
GST_DEBUG ("only forward playback supported, rate %f not allowed", speed);
return FALSE;
}
GST_OBJECT_LOCK (wvparse);
rate = wvparse->samplerate;
if (rate == 0) {
GST_OBJECT_UNLOCK (wvparse);
GST_DEBUG ("haven't read header yet");
return FALSE;
}
/* figure out the last position we need to play. If it's configured (stop !=
* -1), use that, else we play until the total duration of the file */
if (stop == -1)
stop = wvparse->segment.duration;
/* convert from time to samples if necessary */
if (format == GST_FORMAT_TIME) {
if (start_type != GST_SEEK_TYPE_NONE)
start = gst_util_uint64_scale_int (start, rate, GST_SECOND);
if (stop_type != GST_SEEK_TYPE_NONE)
stop = gst_util_uint64_scale_int (stop, rate, GST_SECOND);
}
if (start < 0) {
GST_OBJECT_UNLOCK (wvparse);
GST_DEBUG_OBJECT (wvparse, "Invalid start sample %" G_GINT64_FORMAT, start);
return FALSE;
}
flush = ((seek_flags & GST_SEEK_FLAG_FLUSH) != 0);
/* operate on segment copy until we know the seek worked */
segment = wvparse->segment;
gst_segment_set_seek (&segment, speed, GST_FORMAT_DEFAULT,
seek_flags, start_type, start, stop_type, stop, &only_update);
#if 0
if (only_update) {
wvparse->segment = segment;
gst_wavpack_parse_send_newsegment (wvparse, TRUE);
goto done;
}
#endif
gst_pad_push_event (wvparse->sinkpad, gst_event_new_flush_start ());
if (flush) {
gst_pad_push_event (wvparse->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_pause_task (wvparse->sinkpad);
}
GST_PAD_STREAM_LOCK (wvparse->sinkpad);
/* Save current position */
last_stop = wvparse->segment.last_stop;
gst_pad_push_event (wvparse->sinkpad, gst_event_new_flush_stop ());
if (flush) {
gst_pad_push_event (wvparse->srcpad, gst_event_new_flush_stop ());
}
GST_DEBUG_OBJECT (wvparse, "Performing seek to %" GST_TIME_FORMAT " sample %"
G_GINT64_FORMAT, GST_TIME_ARGS (segment.start * GST_SECOND / rate),
start);
ret = gst_wavpack_parse_scan_to_find_sample (wvparse, segment.start,
&byte_offset, &chunk_start);
if (ret) {
GST_DEBUG_OBJECT (wvparse, "new offset: %" G_GINT64_FORMAT, byte_offset);
wvparse->current_offset = byte_offset;
/* we want to send a newsegment event with the actual seek position
* as start, even though our first buffer might start before the
* configured segment. We leave it up to the decoder or sink to crop
* the output buffers accordingly */
wvparse->segment = segment;
wvparse->segment.last_stop = chunk_start;
wvparse->need_newsegment = TRUE;
wvparse->discont = (last_stop != chunk_start) ? TRUE : FALSE;
/* if we're doing a segment seek, post a SEGMENT_START message */
if (wvparse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT_CAST (wvparse),
gst_message_new_segment_start (GST_OBJECT_CAST (wvparse),
wvparse->segment.format, wvparse->segment.last_stop));
}
} else {
GST_DEBUG_OBJECT (wvparse, "seek failed: don't know where to seek to");
}
GST_PAD_STREAM_UNLOCK (wvparse->sinkpad);
GST_OBJECT_UNLOCK (wvparse);
gst_pad_start_task (wvparse->sinkpad,
(GstTaskFunction) gst_wavpack_parse_loop, wvparse);
return ret;
}
static gboolean
gst_swfdec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstSwfdec *swfdec;
#define MAX_SEEK_FORMATS 1 /* we can only do time seeking for now */
swfdec = GST_SWFDEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
#if 0
/* the all-formats seek logic */
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
int new_frame;
int ret;
int n_frames;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
new_frame = start / swfdec->interval;
ret = swfdec_decoder_get_n_frames (swfdec->decoder, &n_frames);
if (new_frame >= 0 && new_frame < n_frames) {
GstEvent *event;
GST_DEBUG ("seeking to frame %d\n", new_frame);
swfdec_render_seek (swfdec->decoder, new_frame);
GST_DEBUG ("sending flush event\n");
event = gst_event_new_flush_start ();
gst_pad_push_event (swfdec->videopad, event);
event = gst_event_new_flush_start ();
gst_pad_push_event (swfdec->audiopad, event);
swfdec->send_discont = TRUE;
swfdec->seek_frame = new_frame;
}
res = TRUE;
break;
}
#endif
case GST_EVENT_NAVIGATION:
{
const GstStructure *structure = gst_event_get_structure (event);
const char *type;
type = gst_structure_get_string (structure, "event");
GST_DEBUG ("got nav event %s", type);
if (g_str_equal (type, "mouse-move")) {
gst_structure_get_double (structure, "pointer_x", &swfdec->x);
gst_structure_get_double (structure, "pointer_y", &swfdec->y);
} else if (g_str_equal (type, "mouse-button-press")) {
gst_structure_get_double (structure, "pointer_x", &swfdec->x);
gst_structure_get_double (structure, "pointer_y", &swfdec->y);
swfdec->button = 1;
} else if (g_str_equal (type, "mouse-button-release")) {
gst_structure_get_double (structure, "pointer_x", &swfdec->x);
gst_structure_get_double (structure, "pointer_y", &swfdec->y);
swfdec->button = 0;
}
break;
}
default:
res = gst_pad_event_default (pad, event);
event = NULL;
break;
}
if (event) {
gst_event_unref (event);
}
gst_object_unref (swfdec);
return res;
}
/***********************************************************************************
* Seek implementation
***********************************************************************************/
static gboolean progress_buffer_perform_push_seek(ProgressBuffer *element, GstPad *pad, GstEvent *event)
{
GstFormat format;
gdouble rate;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 position;
GstSegment segment;
gst_event_parse_seek(event, &rate, &format, &flags, &start_type, &position, &stop_type, NULL);
if (format != GST_FORMAT_BYTES || start_type != GST_SEEK_TYPE_SET)
return FALSE;
if (stop_type != GST_SEEK_TYPE_NONE)
{
gst_element_message_full(GST_ELEMENT(element),
GST_MESSAGE_WARNING,
GST_CORE_ERROR,
GST_CORE_ERROR_SEEK, g_strdup("stop_type != GST_SEEK_TYPE_NONE. Seeking to stop is not supported."), NULL,
("progressbuffer.c"), ("progress_buffer_perform_push_seek"), 0);
return FALSE;
}
if (flags & GST_SEEK_FLAG_FLUSH)
gst_pad_push_event(pad, gst_event_new_flush_start());
// Signal the task to stop if it's waiting.
g_mutex_lock(&element->lock);
element->srcresult = GST_FLOW_FLUSHING;
g_cond_signal(&element->add_cond);
g_mutex_unlock(&element->lock);
GST_PAD_STREAM_LOCK(pad); // Wait for task to stop
g_mutex_lock(&element->lock);
element->srcresult = GST_FLOW_OK;
#ifdef ENABLE_SOURCE_SEEKING
element->instant_seek = (position >= element->sink_segment.start &&
(position - (gint64)element->sink_segment.position) <= element->bandwidth * element->wait_tolerance);
if (element->instant_seek)
{
cache_set_read_position(element->cache, position - element->cache_read_offset);
gst_segment_init(&segment, GST_FORMAT_BYTES);
segment.rate = rate;
segment.start = position;
segment.stop = element->sink_segment.stop;
segment.position = position;
progress_buffer_set_pending_event(element, gst_event_new_segment(&segment));
}
else
{
// Clear any pending events, since we doing seek.
reset_eos(element, TRUE);
}
#else
cache_set_read_position(element->cache, position - element->cache_read_offset);
gst_segment_init(&segment, GST_FORMAT_BYTES);
segment.rate = rate;
segment.start = position;
segment.stop = element->sink_segment.stop;
segment.position = position;
progress_buffer_set_pending_event(element, gst_event_new_segment(&segment));
#endif
g_mutex_unlock(&element->lock);
#ifdef ENABLE_SOURCE_SEEKING
if (!element->instant_seek)
{
element->is_source_seeking = TRUE;
if (!gst_pad_push_event(element->sinkpad, gst_event_new_seek(rate, GST_FORMAT_BYTES, flags, GST_SEEK_TYPE_SET, position, GST_SEEK_TYPE_NONE, 0)))
{
element->instant_seek = TRUE;
cache_set_read_position(element->cache, position - element->cache_read_offset);
gst_segment_init(&segment, GST_FORMAT_BYTES);
segment.rate = rate;
segment.start = position;
segment.stop = element->sink_segment.stop;
segment.position = position;
progress_buffer_set_pending_event(element, gst_event_new_segment(&segment));
}
element->is_source_seeking = FALSE;
}
#endif
if (flags & GST_SEEK_FLAG_FLUSH)
gst_pad_push_event(pad, gst_event_new_flush_stop(TRUE));
gst_pad_start_task(element->srcpad, progress_buffer_loop, element, NULL);
GST_PAD_STREAM_UNLOCK(pad);
// INLINE - gst_event_unref()
gst_event_unref(event);
return TRUE;
}
static gboolean
gst_type_find_element_seek (GstTypeFindElement * typefind, GstEvent * event)
{
GstSeekFlags flags;
GstSeekType start_type, stop_type;
GstFormat format;
gboolean flush;
gdouble rate;
gint64 start, stop;
GstSegment seeksegment = { 0, };
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
/* we can only seek on bytes */
if (format != GST_FORMAT_BYTES) {
GST_DEBUG_OBJECT (typefind, "Can only seek on BYTES");
return FALSE;
}
/* copy segment, we need this because we still need the old
* segment when we close the current segment. */
memcpy (&seeksegment, &typefind->segment, sizeof (GstSegment));
GST_DEBUG_OBJECT (typefind, "configuring seek");
gst_segment_do_seek (&seeksegment, rate, format, flags,
start_type, start, stop_type, stop, NULL);
flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
GST_DEBUG_OBJECT (typefind, "New segment %" GST_SEGMENT_FORMAT, &seeksegment);
if (flush) {
GST_DEBUG_OBJECT (typefind, "Starting flush");
gst_pad_push_event (typefind->sink, gst_event_new_flush_start ());
gst_pad_push_event (typefind->src, gst_event_new_flush_start ());
} else {
GST_DEBUG_OBJECT (typefind, "Non-flushing seek, pausing task");
gst_pad_pause_task (typefind->sink);
}
/* now grab the stream lock so that streaming cannot continue, for
* non flushing seeks when the element is in PAUSED this could block
* forever. */
GST_DEBUG_OBJECT (typefind, "Waiting for streaming to stop");
GST_PAD_STREAM_LOCK (typefind->sink);
if (flush) {
GST_DEBUG_OBJECT (typefind, "Stopping flush");
gst_pad_push_event (typefind->sink, gst_event_new_flush_stop (TRUE));
gst_pad_push_event (typefind->src, gst_event_new_flush_stop (TRUE));
}
/* now update the real segment info */
GST_DEBUG_OBJECT (typefind, "Committing new seek segment");
memcpy (&typefind->segment, &seeksegment, sizeof (GstSegment));
typefind->offset = typefind->segment.start;
/* notify start of new segment */
if (typefind->segment.flags & GST_SEGMENT_FLAG_SEGMENT) {
GstMessage *msg;
msg = gst_message_new_segment_start (GST_OBJECT (typefind),
GST_FORMAT_BYTES, typefind->segment.start);
gst_element_post_message (GST_ELEMENT (typefind), msg);
}
typefind->need_segment = TRUE;
/* restart our task since it might have been stopped when we did the
* flush. */
gst_pad_start_task (typefind->sink,
(GstTaskFunction) gst_type_find_element_loop, typefind->sink, NULL);
/* streaming can continue now */
GST_PAD_STREAM_UNLOCK (typefind->sink);
return TRUE;
}
static void
_audiodecoder_flush_events (gboolean send_buffers)
{
GstSegment segment;
GstBuffer *buffer;
guint64 i;
GList *events_iter;
GstMessage *msg;
setup_audiodecodertester ();
gst_pad_set_active (mysrcpad, TRUE);
gst_element_set_state (dec, GST_STATE_PLAYING);
gst_pad_set_active (mysinkpad, TRUE);
send_startup_events ();
/* push a new segment */
gst_segment_init (&segment, GST_FORMAT_TIME);
fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_segment (&segment)));
if (send_buffers) {
/* push buffers, the data is actually a number so we can track them */
for (i = 0; i < NUM_BUFFERS; i++) {
if (i % 10 == 0) {
GstTagList *tags;
tags = gst_tag_list_new (GST_TAG_TRACK_NUMBER, i, NULL);
fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_tag (tags)));
} else {
buffer = create_test_buffer (i);
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
}
} else {
/* push sticky event */
GstTagList *tags;
tags = gst_tag_list_new (GST_TAG_TRACK_NUMBER, 0, NULL);
fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_tag (tags)));
}
msg =
gst_message_new_element (GST_OBJECT (mysrcpad),
gst_structure_new_empty ("test"));
fail_unless (gst_pad_push_event (mysrcpad,
gst_event_new_sink_message ("test", msg)));
gst_message_unref (msg);
fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_eos ()));
events_iter = events;
/* make sure the usual events have been received */
{
GstEvent *sstart = events_iter->data;
fail_unless (GST_EVENT_TYPE (sstart) == GST_EVENT_STREAM_START);
events_iter = g_list_next (events_iter);
}
if (send_buffers) {
{
GstEvent *caps_event = events_iter->data;
fail_unless (GST_EVENT_TYPE (caps_event) == GST_EVENT_CAPS);
events_iter = g_list_next (events_iter);
}
{
GstEvent *segment_event = events_iter->data;
fail_unless (GST_EVENT_TYPE (segment_event) == GST_EVENT_SEGMENT);
events_iter = g_list_next (events_iter);
}
for (int i=0; i< NUM_BUFFERS / 10; i++)
{
GstEvent *tag_event = events_iter->data;
fail_unless (GST_EVENT_TYPE (tag_event) == GST_EVENT_TAG);
events_iter = g_list_next (events_iter);
}
}
{
GstEvent *eos_event = events_iter->data;
fail_unless (GST_EVENT_TYPE (eos_event) == GST_EVENT_EOS);
events_iter = g_list_next (events_iter);
}
/* check that EOS was received */
fail_unless (GST_PAD_IS_EOS (mysrcpad));
fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_flush_start ()));
fail_unless (GST_PAD_IS_EOS (mysrcpad));
/* Check that we have tags */
{
GstEvent *tags = gst_pad_get_sticky_event (mysrcpad, GST_EVENT_TAG, 0);
fail_unless (tags != NULL);
gst_event_unref (tags);
}
/* Check that we still have a segment set */
{
GstEvent *segment =
gst_pad_get_sticky_event (mysrcpad, GST_EVENT_SEGMENT, 0);
fail_unless (segment != NULL);
gst_event_unref (segment);
}
fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_flush_stop (TRUE)));
fail_if (GST_PAD_IS_EOS (mysrcpad));
/* Check that the segment was flushed on FLUSH_STOP */
{
GstEvent *segment =
gst_pad_get_sticky_event (mysrcpad, GST_EVENT_SEGMENT, 0);
fail_unless (segment == NULL);
}
/* Check the tags were not lost on FLUSH_STOP */
{
GstEvent *tags = gst_pad_get_sticky_event (mysrcpad, GST_EVENT_TAG, 0);
fail_unless (tags != NULL);
gst_event_unref (tags);
}
g_list_free_full (buffers, (GDestroyNotify) gst_buffer_unref);
buffers = NULL;
gst_element_set_state (dec, GST_STATE_NULL);
cleanup_audiodecodertest ();
}
static gboolean
gst_image_freeze_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstImageFreeze *self = GST_IMAGE_FREEZE (parent);
gboolean ret;
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
case GST_EVENT_QOS:
case GST_EVENT_LATENCY:
case GST_EVENT_STEP:
GST_DEBUG_OBJECT (pad, "Dropping event");
gst_event_unref (event);
ret = TRUE;
break;
case GST_EVENT_SEEK: {
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gint64 last_stop;
gboolean start_task;
gboolean flush;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
gst_event_unref (event);
flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT) {
GST_ERROR_OBJECT (pad, "Seek in invalid format: %s",
gst_format_get_name (format));
ret = FALSE;
break;
}
if (format == GST_FORMAT_DEFAULT) {
format = GST_FORMAT_TIME;
if (!gst_image_freeze_convert (self, GST_FORMAT_DEFAULT, start, &format,
&start)
|| !gst_image_freeze_convert (self, GST_FORMAT_DEFAULT, stop,
&format, &stop)
|| start == -1 || stop == -1) {
GST_ERROR_OBJECT (pad,
"Failed to convert seek from DEFAULT format into TIME format");
ret = FALSE;
break;
}
}
if (flush) {
GstEvent *e;
g_atomic_int_set (&self->seeking, 1);
e = gst_event_new_flush_start ();
gst_pad_push_event (self->srcpad, e);
} else {
gst_pad_pause_task (self->srcpad);
}
GST_PAD_STREAM_LOCK (self->srcpad);
g_mutex_lock (&self->lock);
gst_segment_do_seek (&self->segment, rate, format, flags, start_type,
start, stop_type, stop, NULL);
self->need_segment = TRUE;
last_stop = self->segment.position;
start_task = self->buffer != NULL;
g_mutex_unlock (&self->lock);
if (flush) {
GstEvent *e;
e = gst_event_new_flush_stop (TRUE);
gst_pad_push_event (self->srcpad, e);
g_atomic_int_set (&self->seeking, 0);
}
if (flags & GST_SEEK_FLAG_SEGMENT) {
GstMessage *m;
m = gst_message_new_segment_start (GST_OBJECT (self),
format, last_stop);
gst_element_post_message (GST_ELEMENT (self), m);
}
GST_PAD_STREAM_UNLOCK (self->srcpad);
GST_DEBUG_OBJECT (pad, "Seek successful");
if (start_task) {
g_mutex_lock (&self->lock);
if (self->buffer != NULL)
gst_pad_start_task (self->srcpad,
(GstTaskFunction) gst_image_freeze_src_loop, self->srcpad, NULL);
g_mutex_unlock (&self->lock);
}
ret = TRUE;
break;
}
case GST_EVENT_FLUSH_START:
gst_image_freeze_reset (self);
/* fall through */
default:
ret = gst_pad_push_event (self->sinkpad, event);
break;
}
return ret;
}
static gboolean
gst_raw_parse_handle_seek_pull (GstRawParse * rp, GstEvent * event)
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gint64 last_stop;
gboolean ret = FALSE;
gboolean flush;
GstSegment seeksegment;
if (event) {
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
/* convert input offsets to time */
ret = gst_raw_parse_convert (rp, format, start, GST_FORMAT_TIME, &start);
ret &= gst_raw_parse_convert (rp, format, stop, GST_FORMAT_TIME, &stop);
if (!ret)
goto convert_failed;
GST_DEBUG_OBJECT (rp, "converted start - stop to time");
format = GST_FORMAT_TIME;
gst_event_unref (event);
} else {
format = GST_FORMAT_TIME;
flags = 0;
}
flush = ((flags & GST_SEEK_FLAG_FLUSH) != 0);
/* start flushing up and downstream so that the loop function pauses and we
* can acquire the STREAM_LOCK. */
if (flush) {
GST_LOG_OBJECT (rp, "flushing");
gst_pad_push_event (rp->sinkpad, gst_event_new_flush_start ());
gst_pad_push_event (rp->srcpad, gst_event_new_flush_start ());
} else {
GST_LOG_OBJECT (rp, "pause task");
gst_pad_pause_task (rp->sinkpad);
}
GST_PAD_STREAM_LOCK (rp->sinkpad);
memcpy (&seeksegment, &rp->segment, sizeof (GstSegment));
if (event) {
/* configure the seek values */
gst_segment_do_seek (&seeksegment, rate, format, flags,
start_type, start, stop_type, stop, NULL);
}
/* get the desired position */
last_stop = seeksegment.position;
GST_LOG_OBJECT (rp, "seeking to %" GST_TIME_FORMAT,
GST_TIME_ARGS (last_stop));
/* convert the desired position to bytes */
ret =
gst_raw_parse_convert (rp, format, last_stop, GST_FORMAT_BYTES,
&last_stop);
/* prepare for streaming */
if (flush) {
GST_LOG_OBJECT (rp, "stop flush");
gst_pad_push_event (rp->sinkpad, gst_event_new_flush_stop (TRUE));
gst_pad_push_event (rp->srcpad, gst_event_new_flush_stop (TRUE));
}
if (ret) {
/* seek done */
/* Seek on a frame boundary */
last_stop -= last_stop % rp->framesize;
rp->offset = last_stop;
rp->n_frames = last_stop / rp->framesize;
GST_LOG_OBJECT (rp, "seeking to bytes %" G_GINT64_FORMAT, last_stop);
memcpy (&rp->segment, &seeksegment, sizeof (GstSegment));
if (rp->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT_CAST (rp),
gst_message_new_segment_start (GST_OBJECT_CAST (rp),
rp->segment.format, rp->segment.position));
}
/* for deriving a stop position for the playback segment from the seek
* segment, we must take the duration when the stop is not set */
if ((stop = rp->segment.stop) == -1)
stop = rp->segment.duration;
GST_DEBUG_OBJECT (rp, "preparing newsegment from %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, rp->segment.start, stop);
/* now replace the old segment so that we send it in the stream thread the
* next time it is scheduled. */
if (rp->start_segment)
gst_event_unref (rp->start_segment);
rp->start_segment = gst_event_new_segment (&rp->segment);
}
rp->discont = TRUE;
GST_LOG_OBJECT (rp, "start streaming");
gst_pad_start_task (rp->sinkpad, (GstTaskFunction) gst_raw_parse_loop, rp,
NULL);
GST_PAD_STREAM_UNLOCK (rp->sinkpad);
return ret;
/* ERRORS */
convert_failed:
{
GST_DEBUG_OBJECT (rp, "Seek failed: couldn't convert to byte positions");
return FALSE;
}
}
gboolean
mpegts_base_handle_seek_event (MpegTSBase * base, GstPad * pad,
GstEvent * event)
{
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
GstFlowReturn ret = GST_FLOW_ERROR;
gdouble rate;
gboolean flush;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GstEvent *flush_event = NULL;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME)
return FALSE;
if (GST_EVENT_SEQNUM (event) == base->last_seek_seqnum) {
GST_DEBUG_OBJECT (base, "Skipping already handled seek");
return TRUE;
}
if (base->mode == BASE_MODE_PUSHING) {
/* First try if upstream supports seeking in TIME format */
if (gst_pad_push_event (base->sinkpad, gst_event_ref (event))) {
GST_DEBUG ("upstream handled SEEK event");
return TRUE;
}
/* If the subclass can seek, do that */
if (klass->seek) {
ret = klass->seek (base, event);
if (G_UNLIKELY (ret != GST_FLOW_OK))
GST_WARNING ("seeking failed %s", gst_flow_get_name (ret));
else {
GstEvent *new_seek;
if (GST_CLOCK_TIME_IS_VALID (base->seek_offset)) {
base->mode = BASE_MODE_SEEKING;
new_seek = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
GST_SEEK_TYPE_SET, base->seek_offset, GST_SEEK_TYPE_NONE, -1);
gst_event_set_seqnum (new_seek, GST_EVENT_SEQNUM (event));
if (!gst_pad_push_event (base->sinkpad, new_seek))
ret = GST_FLOW_ERROR;
else
base->last_seek_seqnum = GST_EVENT_SEQNUM (event);
}
base->mode = BASE_MODE_PUSHING;
}
} else {
GST_WARNING ("subclass has no seek implementation");
}
return ret == GST_FLOW_OK;
}
if (!klass->seek) {
GST_WARNING ("subclass has no seek implementation");
return FALSE;
}
if (rate <= 0.0) {
GST_WARNING ("Negative rate not supported");
return FALSE;
}
GST_DEBUG ("seek event, rate: %f start: %" GST_TIME_FORMAT
" stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
GST_TIME_ARGS (stop));
flush = flags & GST_SEEK_FLAG_FLUSH;
/* stop streaming, either by flushing or by pausing the task */
base->mode = BASE_MODE_SEEKING;
if (flush) {
GST_DEBUG_OBJECT (base, "sending flush start");
flush_event = gst_event_new_flush_start ();
gst_event_set_seqnum (flush_event, GST_EVENT_SEQNUM (event));
gst_pad_push_event (base->sinkpad, gst_event_ref (flush_event));
GST_MPEGTS_BASE_GET_CLASS (base)->push_event (base, flush_event);
} else
gst_pad_pause_task (base->sinkpad);
/* wait for streaming to finish */
GST_PAD_STREAM_LOCK (base->sinkpad);
if (flush) {
/* send a FLUSH_STOP for the sinkpad, since we need data for seeking */
GST_DEBUG_OBJECT (base, "sending flush stop");
flush_event = gst_event_new_flush_stop (TRUE);
gst_event_set_seqnum (flush_event, GST_EVENT_SEQNUM (event));
/* ref for it to be reused later */
gst_pad_push_event (base->sinkpad, gst_event_ref (flush_event));
/* And actually flush our pending data but allow to preserve some info
* to perform the seek */
mpegts_base_flush (base, FALSE);
mpegts_packetizer_flush (base->packetizer, FALSE);
}
if (flags & (GST_SEEK_FLAG_SEGMENT)) {
GST_WARNING ("seek flags 0x%x are not supported", (int) flags);
goto done;
}
/* If the subclass can seek, do that */
ret = klass->seek (base, event);
if (G_UNLIKELY (ret != GST_FLOW_OK))
GST_WARNING ("seeking failed %s", gst_flow_get_name (ret));
else
base->last_seek_seqnum = GST_EVENT_SEQNUM (event);
if (flush_event) {
/* if we sent a FLUSH_START, we now send a FLUSH_STOP */
GST_DEBUG_OBJECT (base, "sending flush stop");
GST_MPEGTS_BASE_GET_CLASS (base)->push_event (base, flush_event);
flush_event = NULL;
}
done:
if (flush_event)
gst_event_unref (flush_event);
gst_pad_start_task (base->sinkpad, (GstTaskFunction) mpegts_base_loop, base,
NULL);
GST_PAD_STREAM_UNLOCK (base->sinkpad);
return ret == GST_FLOW_OK;
}
static gboolean
gst_ts_shifter_handle_seek (GstTSShifter * ts, GstEvent * event)
{
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gdouble rate;
guint64 offset = 0;
gboolean ret = FALSE;
gst_event_parse_seek (event, &rate, &format, &flags,
&start_type, &start, &stop_type, &stop);
if (!(flags & GST_SEEK_FLAG_FLUSH)) {
GST_WARNING_OBJECT (ts, "we only support flushing seeks");
goto beach;
}
offset = gst_ts_shifter_get_bytes_offset (ts, format, start_type, start);
if (G_UNLIKELY (offset == (guint64) - 1
|| !gst_ts_cache_has_offset (ts->cache, offset))) {
GST_WARNING_OBJECT (ts, "seek failed");
goto beach;
}
/* remember the rate */
ts->segment.rate = rate;
ts->segment.flags |= GST_SEGMENT_FLAG_RESET;
GST_DEBUG_OBJECT (ts, "seeking at offset %" G_GUINT64_FORMAT, offset);
/* now unblock the loop function */
FLOW_MUTEX_LOCK (ts);
/* Flush start downstream to make sure loop is idle */
gst_pad_push_event (ts->srcpad, gst_event_new_flush_start ());
ts->srcresult = GST_FLOW_FLUSHING;
/* unblock the loop function */
FLOW_SIGNAL_ADD (ts);
FLOW_MUTEX_UNLOCK (ts);
/* make sure it pauses, this should happen since we sent
* flush_start downstream. */
gst_pad_pause_task (ts->srcpad);
GST_DEBUG_OBJECT (ts, "loop stopped");
/* Flush stop downstream to ensure that all pushed cache slots come back
* to our control */
gst_pad_push_event (ts->srcpad, gst_event_new_flush_stop (TRUE));
/* Reconfigure the cache to handle the new offset */
FLOW_MUTEX_LOCK (ts);
gst_ts_cache_seek (ts->cache, offset);
/* Restart the pushing loop */
ts->srcresult = GST_FLOW_OK;
ts->is_eos = FALSE;
ts->unexpected = FALSE;
ts->need_newsegment = TRUE;
gst_pad_start_task (ts->srcpad, (GstTaskFunction) gst_ts_shifter_loop,
ts->srcpad, NULL);
FLOW_MUTEX_UNLOCK (ts);
GST_DEBUG_OBJECT (ts, "loop started");
ret = TRUE;
beach:
return ret;
}
static gboolean
gst_hls_demux_src_event (GstPad * pad, GstEvent * event)
{
GstHLSDemux *demux;
demux = GST_HLS_DEMUX (gst_pad_get_element_private (pad));
switch (event->type) {
case GST_EVENT_SEEK:
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
GList *walk;
gint current_pos;
gint current_sequence;
gint target_second;
GstM3U8MediaFile *file;
GST_INFO_OBJECT (demux, "Received GST_EVENT_SEEK");
if (gst_m3u8_client_is_live (demux->client)) {
GST_WARNING_OBJECT (demux, "Received seek event for live stream");
return FALSE;
}
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME)
return FALSE;
GST_DEBUG_OBJECT (demux, "seek event, rate: %f start: %" GST_TIME_FORMAT
" stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
GST_TIME_ARGS (stop));
file = GST_M3U8_MEDIA_FILE (demux->client->current->files->data);
current_sequence = file->sequence;
current_pos = 0;
target_second = start / GST_SECOND;
GST_DEBUG_OBJECT (demux, "Target seek to %d", target_second);
for (walk = demux->client->current->files; walk; walk = walk->next) {
file = walk->data;
current_sequence = file->sequence;
if (current_pos <= target_second
&& target_second < current_pos + file->duration) {
break;
}
current_pos += file->duration;
}
if (walk == NULL) {
GST_WARNING_OBJECT (demux, "Could not find seeked fragment");
return FALSE;
}
if (flags & GST_SEEK_FLAG_FLUSH) {
GST_DEBUG_OBJECT (demux, "sending flush start");
gst_pad_push_event (demux->srcpad, gst_event_new_flush_start ());
}
demux->cancelled = TRUE;
gst_task_pause (demux->task);
g_mutex_lock (demux->fetcher_lock);
gst_hls_demux_stop_fetcher (demux, TRUE);
g_mutex_unlock (demux->fetcher_lock);
g_mutex_lock (demux->thread_lock);
g_cond_signal (demux->thread_cond);
g_mutex_unlock (demux->thread_lock);
gst_task_pause (demux->task);
/* wait for streaming to finish */
g_static_rec_mutex_lock (&demux->task_lock);
demux->need_cache = TRUE;
while (!g_queue_is_empty (demux->queue)) {
GstBuffer *buf = g_queue_pop_head (demux->queue);
gst_buffer_unref (buf);
}
GST_DEBUG_OBJECT (demux, "seeking to sequence %d", current_sequence);
demux->client->sequence = current_sequence;
demux->position = start;
demux->need_segment = TRUE;
if (flags & GST_SEEK_FLAG_FLUSH) {
GST_DEBUG_OBJECT (demux, "sending flush stop");
gst_pad_push_event (demux->srcpad, gst_event_new_flush_stop ());
}
demux->cancelled = FALSE;
gst_task_start (demux->task);
g_static_rec_mutex_unlock (&demux->task_lock);
return TRUE;
}
default:
break;
}
return gst_pad_event_default (pad, event);
}
static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
gboolean ret = FALSE;
GstCaps *caps;
GstPad *pad, *peer;
GST_DEBUG_OBJECT (self, "Starting image capture");
gst_element_set_state (self->src_vid_src, GST_STATE_READY);
/* FIXME - V4L2 source will not close the device until all buffers have came
* back. Flushing the pipeline, will ensure it's properly closed, and that
* setting it back to PLAYING will work. This is more a workaround then a
* solution to buffer reclaiming. */
pad = gst_element_get_static_pad (self->src_vid_src, "src");
peer = gst_pad_get_peer (pad);
gst_object_unref (pad);
gst_pad_send_event (peer, gst_event_new_flush_start ());
gst_pad_send_event (peer, gst_event_new_flush_stop (TRUE));
gst_object_unref (peer);
if (self->image_renegotiate) {
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);
if (self->src_zoom_filter)
g_object_set (self->src_zoom_filter, "caps", NULL, NULL);
caps = gst_pad_get_allowed_caps (self->imgsrc);
gst_caps_replace (&self->image_capture_caps, caps);
gst_caps_unref (caps);
/* FIXME - do we need to update basecamerasrc width/height somehow here?
* if not, i think we need to do something about _when_ they get updated
* to be sure that set_element_zoom doesn't use the wrong values */
/* We caught this event in the src pad event handler and now we want to
* actually push it upstream */
gst_pad_send_event (self->outsel_imgpad, gst_event_new_reconfigure ());
self->image_renegotiate = FALSE;
}
if (photography) {
gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
self->image_capture_caps);
ret = gst_photography_prepare_for_capture (photography,
(GstPhotographyCapturePrepared) img_capture_prepared,
self->image_capture_caps, self);
} else {
g_mutex_unlock (&bcamsrc->capturing_mutex);
gst_wrapper_camera_bin_reset_video_src_caps (self,
self->image_capture_caps);
g_mutex_lock (&bcamsrc->capturing_mutex);
ret = TRUE;
gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
}
return ret;
}
/* This function is used to perform seeks on the element in
* pull mode.
*
* It also works when event is NULL, in which case it will just
* start from the last configured segment. This technique is
* used when activating the element and to perform the seek in
* READY.
*/
static gboolean
gst_aiff_parse_perform_seek (GstAiffParse * aiff, GstEvent * event)
{
gboolean res;
gdouble rate;
GstFormat format, bformat;
GstSeekFlags flags;
GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
gint64 cur, stop, upstream_size;
gboolean flush;
gboolean update;
GstSegment seeksegment = { 0, };
gint64 last_stop;
if (event) {
GST_DEBUG_OBJECT (aiff, "doing seek with event");
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
/* no negative rates yet */
if (rate < 0.0)
goto negative_rate;
if (format != aiff->segment.format) {
GST_INFO_OBJECT (aiff, "converting seek-event from %s to %s",
gst_format_get_name (format),
gst_format_get_name (aiff->segment.format));
res = TRUE;
if (cur_type != GST_SEEK_TYPE_NONE)
res =
gst_pad_query_convert (aiff->srcpad, format, cur,
&aiff->segment.format, &cur);
if (res && stop_type != GST_SEEK_TYPE_NONE)
res =
gst_pad_query_convert (aiff->srcpad, format, stop,
&aiff->segment.format, &stop);
if (!res)
goto no_format;
format = aiff->segment.format;
}
} else {
GST_DEBUG_OBJECT (aiff, "doing seek without event");
flags = 0;
rate = 1.0;
cur_type = GST_SEEK_TYPE_SET;
stop_type = GST_SEEK_TYPE_SET;
}
/* get flush flag */
flush = flags & GST_SEEK_FLAG_FLUSH;
/* now we need to make sure the streaming thread is stopped. We do this by
* either sending a FLUSH_START event downstream which will cause the
* streaming thread to stop with a WRONG_STATE.
* For a non-flushing seek we simply pause the task, which will happen as soon
* as it completes one iteration (and thus might block when the sink is
* blocking in preroll). */
if (flush) {
GST_DEBUG_OBJECT (aiff, "sending flush start");
gst_pad_push_event (aiff->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_pause_task (aiff->sinkpad);
}
/* we should now be able to grab the streaming thread because we stopped it
* with the above flush/pause code */
GST_PAD_STREAM_LOCK (aiff->sinkpad);
/* save current position */
last_stop = aiff->segment.last_stop;
GST_DEBUG_OBJECT (aiff, "stopped streaming at %" G_GINT64_FORMAT, last_stop);
/* copy segment, we need this because we still need the old
* segment when we close the current segment. */
memcpy (&seeksegment, &aiff->segment, sizeof (GstSegment));
/* configure the seek parameters in the seeksegment. We will then have the
* right values in the segment to perform the seek */
if (event) {
GST_DEBUG_OBJECT (aiff, "configuring seek");
gst_segment_set_seek (&seeksegment, rate, format, flags,
cur_type, cur, stop_type, stop, &update);
}
/* figure out the last position we need to play. If it's configured (stop !=
* -1), use that, else we play until the total duration of the file */
if ((stop = seeksegment.stop) == -1)
stop = seeksegment.duration;
GST_DEBUG_OBJECT (aiff, "cur_type =%d", cur_type);
if ((cur_type != GST_SEEK_TYPE_NONE)) {
/* bring offset to bytes, if the bps is 0, we have the segment in BYTES and
* we can just copy the last_stop. If not, we use the bps to convert TIME to
* bytes. */
if (aiff->bps > 0)
aiff->offset =
uint64_ceiling_scale (seeksegment.last_stop, (guint64) aiff->bps,
GST_SECOND);
else
aiff->offset = seeksegment.last_stop;
GST_LOG_OBJECT (aiff, "offset=%" G_GUINT64_FORMAT, aiff->offset);
aiff->offset -= (aiff->offset % aiff->bytes_per_sample);
GST_LOG_OBJECT (aiff, "offset=%" G_GUINT64_FORMAT, aiff->offset);
aiff->offset += aiff->datastart;
GST_LOG_OBJECT (aiff, "offset=%" G_GUINT64_FORMAT, aiff->offset);
} else {
GST_LOG_OBJECT (aiff, "continue from offset=%" G_GUINT64_FORMAT,
aiff->offset);
}
if (stop_type != GST_SEEK_TYPE_NONE) {
if (aiff->bps > 0)
aiff->end_offset =
uint64_ceiling_scale (stop, (guint64) aiff->bps, GST_SECOND);
else
aiff->end_offset = stop;
GST_LOG_OBJECT (aiff, "end_offset=%" G_GUINT64_FORMAT, aiff->end_offset);
aiff->end_offset -= (aiff->end_offset % aiff->bytes_per_sample);
GST_LOG_OBJECT (aiff, "end_offset=%" G_GUINT64_FORMAT, aiff->end_offset);
aiff->end_offset += aiff->datastart;
GST_LOG_OBJECT (aiff, "end_offset=%" G_GUINT64_FORMAT, aiff->end_offset);
} else {
GST_LOG_OBJECT (aiff, "continue to end_offset=%" G_GUINT64_FORMAT,
aiff->end_offset);
}
/* make sure filesize is not exceeded due to rounding errors or so,
* same precaution as in _stream_headers */
bformat = GST_FORMAT_BYTES;
if (gst_pad_query_peer_duration (aiff->sinkpad, &bformat, &upstream_size))
aiff->end_offset = MIN (aiff->end_offset, upstream_size);
/* this is the range of bytes we will use for playback */
aiff->offset = MIN (aiff->offset, aiff->end_offset);
aiff->dataleft = aiff->end_offset - aiff->offset;
GST_DEBUG_OBJECT (aiff,
"seek: rate %lf, offset %" G_GUINT64_FORMAT ", end %" G_GUINT64_FORMAT
", segment %" GST_TIME_FORMAT " -- %" GST_TIME_FORMAT, rate, aiff->offset,
aiff->end_offset, GST_TIME_ARGS (seeksegment.start),
GST_TIME_ARGS (stop));
/* prepare for streaming again */
if (flush) {
/* if we sent a FLUSH_START, we now send a FLUSH_STOP */
GST_DEBUG_OBJECT (aiff, "sending flush stop");
gst_pad_push_event (aiff->srcpad, gst_event_new_flush_stop ());
} else if (aiff->segment_running) {
/* we are running the current segment and doing a non-flushing seek,
* close the segment first based on the previous last_stop. */
GST_DEBUG_OBJECT (aiff, "closing running segment %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, aiff->segment.accum, aiff->segment.last_stop);
/* queue the segment for sending in the stream thread */
if (aiff->close_segment)
gst_event_unref (aiff->close_segment);
aiff->close_segment = gst_event_new_new_segment (TRUE,
aiff->segment.rate, aiff->segment.format,
aiff->segment.accum, aiff->segment.last_stop, aiff->segment.accum);
/* keep track of our last_stop */
seeksegment.accum = aiff->segment.last_stop;
}
/* now we did the seek and can activate the new segment values */
memcpy (&aiff->segment, &seeksegment, sizeof (GstSegment));
/* if we're doing a segment seek, post a SEGMENT_START message */
if (aiff->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT_CAST (aiff),
gst_message_new_segment_start (GST_OBJECT_CAST (aiff),
aiff->segment.format, aiff->segment.last_stop));
}
/* now create the newsegment */
GST_DEBUG_OBJECT (aiff, "Creating newsegment from %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, aiff->segment.last_stop, stop);
/* store the newsegment event so it can be sent from the streaming thread. */
if (aiff->start_segment)
gst_event_unref (aiff->start_segment);
aiff->start_segment =
gst_event_new_new_segment (FALSE, aiff->segment.rate,
aiff->segment.format, aiff->segment.last_stop, stop,
aiff->segment.last_stop);
/* mark discont if we are going to stream from another position. */
if (last_stop != aiff->segment.last_stop) {
GST_DEBUG_OBJECT (aiff, "mark DISCONT, we did a seek to another position");
aiff->discont = TRUE;
}
/* and start the streaming task again */
aiff->segment_running = TRUE;
if (!aiff->streaming) {
gst_pad_start_task (aiff->sinkpad, (GstTaskFunction) gst_aiff_parse_loop,
aiff->sinkpad);
}
GST_PAD_STREAM_UNLOCK (aiff->sinkpad);
return TRUE;
/* ERRORS */
negative_rate:
{
GST_DEBUG_OBJECT (aiff, "negative playback rates are not supported yet.");
return FALSE;
}
no_format:
{
GST_DEBUG_OBJECT (aiff, "unsupported format given, seek aborted.");
return FALSE;
}
}
static gboolean
gst_real_audio_demux_handle_seek (GstRealAudioDemux * demux, GstEvent * event)
{
GstFormat format;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gboolean flush, update;
gdouble rate;
guint64 seek_pos;
gint64 cur, stop;
if (!demux->seekable)
goto not_seekable;
if (demux->byterate_num == 0 || demux->byterate_denom == 0)
goto no_bitrate;
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
if (format != GST_FORMAT_TIME)
goto only_time_format_supported;
if (rate <= 0.0)
goto cannot_do_backwards_playback;
flush = ((flags & GST_SEEK_FLAG_FLUSH) != 0);
GST_DEBUG_OBJECT (demux, "flush=%d, rate=%g", flush, rate);
/* unlock streaming thread and make streaming stop */
if (flush) {
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_start ());
gst_pad_push_event (demux->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_pause_task (demux->sinkpad);
}
GST_PAD_STREAM_LOCK (demux->sinkpad);
if (demux->segment_running && !flush) {
GstEvent *newseg;
newseg = gst_event_new_new_segment_full (TRUE, demux->segment.rate,
demux->segment.applied_rate, GST_FORMAT_TIME, demux->segment.start,
demux->segment.last_stop, demux->segment.time);
GST_DEBUG_OBJECT (demux, "sending NEWSEGMENT event to close the current "
"segment: %" GST_PTR_FORMAT, newseg);
gst_pad_push_event (demux->srcpad, newseg);
}
gst_segment_set_seek (&demux->segment, rate, format, flags,
cur_type, cur, stop_type, stop, &update);
GST_DEBUG_OBJECT (demux, "segment: %" GST_SEGMENT_FORMAT, &demux->segment);
seek_pos = gst_util_uint64_scale (demux->segment.start,
demux->byterate_num, demux->byterate_denom * GST_SECOND);
if (demux->packet_size > 0) {
seek_pos -= seek_pos % demux->packet_size;
}
seek_pos += demux->data_offset;
GST_DEBUG_OBJECT (demux, "seek_pos = %" G_GUINT64_FORMAT, seek_pos);
/* stop flushing */
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_stop ());
gst_pad_push_event (demux->srcpad, gst_event_new_flush_stop ());
demux->offset = seek_pos;
demux->need_newsegment = TRUE;
/* notify start of new segment */
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_segment_start (GST_OBJECT (demux),
GST_FORMAT_TIME, demux->segment.last_stop));
}
demux->segment_running = TRUE;
/* restart our task since it might have been stopped when we did the flush */
gst_pad_start_task (demux->sinkpad,
(GstTaskFunction) gst_real_audio_demux_loop, demux);
/* streaming can continue now */
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
return TRUE;
/* ERRORS */
not_seekable:
{
GST_DEBUG_OBJECT (demux, "seek failed: cannot seek in streaming mode");
return FALSE;
}
no_bitrate:
{
GST_DEBUG_OBJECT (demux, "seek failed: bitrate unknown");
return FALSE;
}
only_time_format_supported:
{
GST_DEBUG_OBJECT (demux, "can only seek in TIME format");
return FALSE;
}
cannot_do_backwards_playback:
{
GST_DEBUG_OBJECT (demux, "can only seek with positive rate, not %lf", rate);
return FALSE;
}
}
