static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmSink *self = GST_SHM_SINK (bsink);
int rv;
GstMapInfo map;
GST_OBJECT_LOCK (self);
while (self->wait_for_connection && !self->clients) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
}
while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
}
gst_buffer_map (buf, &map, GST_MAP_READ);
rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size,
GST_BUFFER_TIMESTAMP (buf));
gst_buffer_unmap (buf, &map);
if (rv == -1) {
ShmBlock *block = NULL;
gchar *shmbuf = NULL;
while ((block = sp_writer_alloc_block (self->pipe,
gst_buffer_get_size (buf))) == NULL) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
}
while (self->wait_for_connection && !self->clients) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
sp_writer_free_block (block);
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
}
shmbuf = sp_writer_block_get_buf (block);
gst_buffer_extract (buf, 0, shmbuf, gst_buffer_get_size (buf));
sp_writer_send_buf (self->pipe, shmbuf, gst_buffer_get_size (buf),
GST_BUFFER_TIMESTAMP (buf));
sp_writer_free_block (block);
}
GST_OBJECT_UNLOCK (self);
return GST_FLOW_OK;
}
/**
* gst_clock_wait_for_sync:
* @clock: a GstClock
* @timeout: timeout for waiting or %GST_CLOCK_TIME_NONE
*
* Waits until @clock is synced for reporting the current time. If @timeout
* is %GST_CLOCK_TIME_NONE it will wait forever, otherwise it will time out
* after @timeout nanoseconds.
*
* For asynchronous waiting, the GstClock::synced signal can be used.
*
*
* This returns immediately with TRUE if GST_CLOCK_FLAG_NEEDS_STARTUP_SYNC
* is not set on the clock, or if the clock is already synced.
*
* Returns: %TRUE if waiting was successful, or %FALSE on timeout
*
* Since: 1.6
*/
gboolean
gst_clock_wait_for_sync (GstClock * clock, GstClockTime timeout)
{
gboolean timed_out = FALSE;
g_return_val_if_fail (GST_IS_CLOCK (clock), FALSE);
GST_OBJECT_LOCK (clock);
if (!GST_OBJECT_FLAG_IS_SET (clock, GST_CLOCK_FLAG_NEEDS_STARTUP_SYNC)
|| clock->priv->synced) {
GST_OBJECT_UNLOCK (clock);
return TRUE;
}
if (timeout != GST_CLOCK_TIME_NONE) {
gint64 end_time = g_get_monotonic_time () + gst_util_uint64_scale (timeout,
G_TIME_SPAN_SECOND, GST_SECOND);
while (!clock->priv->synced && !timed_out) {
timed_out =
!g_cond_wait_until (&clock->priv->sync_cond,
GST_OBJECT_GET_LOCK (clock), end_time);
}
} else {
timed_out = FALSE;
while (!clock->priv->synced) {
g_cond_wait (&clock->priv->sync_cond, GST_OBJECT_GET_LOCK (clock));
}
}
GST_OBJECT_UNLOCK (clock);
return !timed_out;
}
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmSink *self = GST_SHM_SINK (bsink);
int rv;
GST_OBJECT_LOCK (self);
while (self->wait_for_connection && !self->clients) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
return GST_FLOW_WRONG_STATE;
}
}
rv = sp_writer_send_buf (self->pipe, (char *) GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
if (rv == -1) {
ShmBlock *block = NULL;
gchar *shmbuf = NULL;
while ((block = sp_writer_alloc_block (self->pipe,
GST_BUFFER_SIZE (buf))) == NULL) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
return GST_FLOW_WRONG_STATE;
}
}
while (self->wait_for_connection && !self->clients) {
g_cond_wait (self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
sp_writer_free_block (block);
GST_OBJECT_UNLOCK (self);
return GST_FLOW_WRONG_STATE;
}
}
shmbuf = sp_writer_block_get_buf (block);
memcpy (shmbuf, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
sp_writer_send_buf (self->pipe, shmbuf, GST_BUFFER_SIZE (buf));
sp_writer_free_block (block);
}
GST_OBJECT_UNLOCK (self);
return GST_FLOW_OK;
}
static void
gst_curl_smtp_sink_wait_for_transfer_end_unlocked (GstCurlSmtpSink * sink)
{
GST_LOG ("waiting for final data do be sent: %d", sink->transfer_end);
while (!sink->transfer_end) {
g_cond_wait (&sink->cond_transfer_end, GST_OBJECT_GET_LOCK (sink));
}
GST_LOG ("final data sent");
}
static GstFlowReturn
gst_v4l2_buffer_pool_poll (GstV4l2BufferPool * pool)
{
gint ret;
GST_OBJECT_LOCK (pool);
while (pool->empty)
g_cond_wait (&pool->empty_cond, GST_OBJECT_GET_LOCK (pool));
GST_OBJECT_UNLOCK (pool);
if (!pool->can_poll_device)
goto done;
GST_LOG_OBJECT (pool, "polling device");
again:
ret = gst_poll_wait (pool->poll, GST_CLOCK_TIME_NONE);
if (G_UNLIKELY (ret < 0)) {
switch (errno) {
case EBUSY:
goto stopped;
case EAGAIN:
case EINTR:
goto again;
case ENXIO:
GST_WARNING_OBJECT (pool,
"v4l2 device doesn't support polling. Disabling"
" using libv4l2 in this case may cause deadlocks");
pool->can_poll_device = FALSE;
goto done;
default:
goto select_error;
}
}
if (gst_poll_fd_has_error (pool->poll, &pool->pollfd))
goto select_error;
done:
return GST_FLOW_OK;
/* ERRORS */
stopped:
{
GST_DEBUG_OBJECT (pool, "stop called");
return GST_FLOW_FLUSHING;
}
select_error:
{
GST_ELEMENT_ERROR (pool->obj->element, RESOURCE, READ, (NULL),
("poll error %d: %s (%d)", ret, g_strerror (errno), errno));
return GST_FLOW_ERROR;
}
}
static void
gst_curl_base_sink_wait_for_response (GstCurlBaseSink * sink)
{
GST_LOG ("waiting for remote to send response code");
GST_OBJECT_LOCK (sink);
while (sink->transfer_cond->wait_for_response) {
g_cond_wait (&sink->transfer_cond->cond, GST_OBJECT_GET_LOCK (sink));
}
GST_OBJECT_UNLOCK (sink);
GST_LOG ("response code received");
}
static void
gst_curl_base_sink_wait_for_transfer_thread_to_send_unlocked
(GstCurlBaseSink * sink)
{
GST_LOG ("waiting for buffer send to complete");
/* this function should not check if the transfer thread is set to be closed
* since that flag only can be set by the EOS event (by the pipeline thread).
* This can therefore never happen while this function is running since this
* function also is called by the pipeline thread (in the render function) */
while (!sink->transfer_cond->data_sent) {
g_cond_wait (&sink->transfer_cond->cond, GST_OBJECT_GET_LOCK (sink));
}
GST_LOG ("buffer send completed");
}
static GstFlowReturn
gst_identity_do_sync (GstIdentity * identity, GstClockTime running_time)
{
GstFlowReturn ret = GST_FLOW_OK;
if (identity->sync &&
GST_BASE_TRANSFORM_CAST (identity)->segment.format == GST_FORMAT_TIME) {
GstClock *clock;
GST_OBJECT_LOCK (identity);
while (identity->blocked)
g_cond_wait (&identity->blocked_cond, GST_OBJECT_GET_LOCK (identity));
if ((clock = GST_ELEMENT (identity)->clock)) {
GstClockReturn cret;
GstClockTime timestamp;
timestamp = running_time + GST_ELEMENT (identity)->base_time +
identity->upstream_latency;
/* save id if we need to unlock */
identity->clock_id = gst_clock_new_single_shot_id (clock, timestamp);
GST_OBJECT_UNLOCK (identity);
cret = gst_clock_id_wait (identity->clock_id, NULL);
GST_OBJECT_LOCK (identity);
if (identity->clock_id) {
gst_clock_id_unref (identity->clock_id);
identity->clock_id = NULL;
}
if (cret == GST_CLOCK_UNSCHEDULED)
ret = GST_FLOW_EOS;
}
GST_OBJECT_UNLOCK (identity);
}
return ret;
}
static gboolean
gst_v4l2_device_provider_start (GstDeviceProvider * provider)
{
GstV4l2DeviceProvider *self = GST_V4L2_DEVICE_PROVIDER (provider);
GST_OBJECT_LOCK (self);
g_assert (self->context == NULL);
self->context = g_main_context_new ();
self->loop = g_main_loop_new (self->context, FALSE);
self->thread = g_thread_new ("v4l2-device-provider", provider_thread,
g_object_ref (self));
while (self->started == FALSE)
g_cond_wait (&self->started_cond, GST_OBJECT_GET_LOCK (self));
GST_OBJECT_UNLOCK (self);
return TRUE;
}
static gboolean
gst_curl_base_sink_wait_for_data_unlocked (GstCurlBaseSink * sink)
{
gboolean data_available = FALSE;
GST_LOG ("waiting for data");
while (!sink->transfer_cond->data_available &&
!sink->transfer_thread_close && !sink->new_file) {
g_cond_wait (&sink->transfer_cond->cond, GST_OBJECT_GET_LOCK (sink));
}
if (sink->transfer_thread_close) {
GST_LOG ("wait for data aborted due to thread close");
} else if (sink->new_file) {
GST_LOG ("wait for data aborted due to new file name");
} else {
GST_LOG ("wait for data completed");
data_available = TRUE;
}
return data_available;
}
static GstClockReturn
gst_test_clock_wait (GstClock * clock,
GstClockEntry * entry, GstClockTimeDiff * jitter)
{
GstTestClock *test_clock = GST_TEST_CLOCK (clock);
GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
GST_OBJECT_LOCK (test_clock);
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
"requesting synchronous clock notification at %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_CLOCK_ENTRY_TIME (entry)));
if (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_UNSCHEDULED)
goto was_unscheduled;
if (gst_test_clock_lookup_entry_context (test_clock, entry) == NULL)
gst_test_clock_add_entry (test_clock, entry, jitter);
GST_CLOCK_ENTRY_STATUS (entry) = GST_CLOCK_BUSY;
while (GST_CLOCK_ENTRY_STATUS (entry) == GST_CLOCK_BUSY)
g_cond_wait (&priv->entry_processed_cond, GST_OBJECT_GET_LOCK (test_clock));
GST_OBJECT_UNLOCK (test_clock);
return GST_CLOCK_ENTRY_STATUS (entry);
/* ERRORS */
was_unscheduled:
{
GST_CAT_DEBUG_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
"entry was unscheduled");
GST_OBJECT_UNLOCK (test_clock);
return GST_CLOCK_UNSCHEDULED;
}
}
gboolean
gst_uri_downloader_stream_uri (GstUriDownloader * downloader,
const gchar * uri, gint64 range_start, gint64 range_end,
GstUriDownloaderChainFunction chain_func, gpointer user_data)
{
GstStateChangeReturn ret;
GST_INFO_OBJECT (downloader, "fetching URI %s", uri);
g_mutex_lock (&downloader->download_lock);
downloader->chain = chain_func;
downloader->priv = user_data;
downloader->eos = FALSE;
gst_pad_set_active (downloader->pad, TRUE);
GST_OBJECT_LOCK (downloader);
if (downloader->cancelled)
goto quit;
if (!gst_uri_downloader_set_uri (downloader, uri)) {
GST_ERROR_OBJECT (downloader, "failed to set URI");
goto quit;
}
gst_bus_set_flushing (downloader->bus, FALSE);
GST_OBJECT_UNLOCK (downloader);
/* set to ready state first to allow setting range */
ret = gst_element_set_state (downloader->urisrc, GST_STATE_READY);
GST_OBJECT_LOCK (downloader);
if (ret == GST_STATE_CHANGE_FAILURE) {
GST_ERROR_OBJECT (downloader, "failed to set src to READY");
goto quit;
}
if (downloader->cancelled)
goto quit;
if (!gst_uri_downloader_set_range (downloader, range_start, range_end)) {
GST_ERROR_OBJECT (downloader, "failed to set range");
goto quit;
}
GST_OBJECT_UNLOCK (downloader);
ret = gst_element_set_state (downloader->urisrc, GST_STATE_PLAYING);
GST_OBJECT_LOCK (downloader);
if (ret == GST_STATE_CHANGE_FAILURE) {
GST_ERROR_OBJECT (downloader, "failed to set src to PLAYING");
goto quit;
}
if (downloader->cancelled)
goto quit;
if (!downloader->eos) {
/* wait until:
* - the download succeed (EOS in the src pad)
* - the download failed (Error message on the fetcher bus)
* - the download was canceled
*/
GST_DEBUG_OBJECT (downloader, "waiting to fetch the URI %s", uri);
g_cond_wait (&downloader->cond, GST_OBJECT_GET_LOCK (downloader));
}
quit:
{
gboolean ret = FALSE;
if (downloader->cancelled) {
GST_DEBUG_OBJECT (downloader, "download interrupted");
} else if (downloader->eos) {
GST_DEBUG_OBJECT (downloader, "URI fetched successfully");
ret = TRUE;
}
downloader->cancelled = FALSE;
gst_uri_downloader_stop (downloader);
GST_OBJECT_UNLOCK (downloader);
g_mutex_unlock (&downloader->download_lock);
return ret;
}
}
static void
gst_live_adder_loop (gpointer data)
{
GstLiveAdder *adder = GST_LIVE_ADDER (data);
GstClockTime buffer_timestamp = 0;
GstClockTime sync_time = 0;
GstClock *clock = NULL;
GstClockID id = NULL;
GstClockReturn ret;
GstBuffer *buffer = NULL;
GstFlowReturn result;
GstEvent *newseg_event = NULL;
GST_OBJECT_LOCK (adder);
again:
for (;;) {
if (adder->srcresult != GST_FLOW_OK)
goto flushing;
if (!g_queue_is_empty (adder->buffers))
break;
if (check_eos_locked (adder))
goto eos;
g_cond_wait (adder->not_empty_cond, GST_OBJECT_GET_LOCK (adder));
}
buffer_timestamp = GST_BUFFER_TIMESTAMP (g_queue_peek_head (adder->buffers));
clock = GST_ELEMENT_CLOCK (adder);
/* If we have no clock, then we can't do anything.. error */
if (!clock) {
if (adder->playing)
goto no_clock;
else
goto push_buffer;
}
GST_DEBUG_OBJECT (adder, "sync to timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (buffer_timestamp));
sync_time = buffer_timestamp + GST_ELEMENT_CAST (adder)->base_time;
/* add latency, this includes our own latency and the peer latency. */
sync_time += adder->latency_ms * GST_MSECOND;
sync_time += adder->peer_latency;
/* create an entry for the clock */
id = adder->clock_id = gst_clock_new_single_shot_id (clock, sync_time);
GST_OBJECT_UNLOCK (adder);
ret = gst_clock_id_wait (id, NULL);
GST_OBJECT_LOCK (adder);
/* and free the entry */
gst_clock_id_unref (id);
adder->clock_id = NULL;
/* at this point, the clock could have been unlocked by a timeout, a new
* head element was added to the queue or because we are shutting down. Check
* for shutdown first. */
if (adder->srcresult != GST_FLOW_OK)
goto flushing;
if (ret == GST_CLOCK_UNSCHEDULED) {
GST_DEBUG_OBJECT (adder,
"Wait got unscheduled, will retry to push with new buffer");
goto again;
}
if (ret != GST_CLOCK_OK && ret != GST_CLOCK_EARLY)
goto clock_error;
push_buffer:
buffer = g_queue_pop_head (adder->buffers);
if (!buffer)
goto again;
/*
* We make sure the timestamps are exactly contiguous
* If its only small skew (due to rounding errors), we correct it
* silently. Otherwise we put the discont flag
*/
if (GST_CLOCK_TIME_IS_VALID (adder->next_timestamp) &&
GST_BUFFER_TIMESTAMP (buffer) != adder->next_timestamp) {
GstClockTimeDiff diff = GST_CLOCK_DIFF (GST_BUFFER_TIMESTAMP (buffer),
adder->next_timestamp);
if (diff < 0)
diff = -diff;
if (diff < GST_SECOND / adder->rate) {
GST_BUFFER_TIMESTAMP (buffer) = adder->next_timestamp;
GST_DEBUG_OBJECT (adder, "Correcting slight skew");
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
} else {
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
GST_DEBUG_OBJECT (adder, "Expected buffer at %" GST_TIME_FORMAT
", but is at %" GST_TIME_FORMAT ", setting discont",
GST_TIME_ARGS (adder->next_timestamp),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
}
} else {
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
}
GST_BUFFER_OFFSET (buffer) = GST_BUFFER_OFFSET_NONE;
GST_BUFFER_OFFSET_END (buffer) = GST_BUFFER_OFFSET_NONE;
if (GST_BUFFER_DURATION_IS_VALID (buffer))
adder->next_timestamp = GST_BUFFER_TIMESTAMP (buffer) +
GST_BUFFER_DURATION (buffer);
else
adder->next_timestamp = GST_CLOCK_TIME_NONE;
if (adder->segment_pending) {
/*
* We set the start at 0, because we re-timestamps to the running time
*/
newseg_event = gst_event_new_new_segment_full (FALSE, 1.0, 1.0,
GST_FORMAT_TIME, 0, -1, 0);
adder->segment_pending = FALSE;
}
GST_OBJECT_UNLOCK (adder);
if (newseg_event)
gst_pad_push_event (adder->srcpad, newseg_event);
GST_LOG_OBJECT (adder, "About to push buffer time:%" GST_TIME_FORMAT
" duration:%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
result = gst_pad_push (adder->srcpad, buffer);
if (result != GST_FLOW_OK)
goto pause;
return;
flushing:
{
GST_DEBUG_OBJECT (adder, "we are flushing");
gst_pad_pause_task (adder->srcpad);
GST_OBJECT_UNLOCK (adder);
return;
}
clock_error:
{
gst_pad_pause_task (adder->srcpad);
GST_OBJECT_UNLOCK (adder);
GST_ELEMENT_ERROR (adder, STREAM, MUX, ("Error with the clock"),
("Error with the clock: %d", ret));
GST_ERROR_OBJECT (adder, "Error with the clock: %d", ret);
return;
}
no_clock:
{
gst_pad_pause_task (adder->srcpad);
GST_OBJECT_UNLOCK (adder);
GST_ELEMENT_ERROR (adder, STREAM, MUX, ("No available clock"),
("No available clock"));
GST_ERROR_OBJECT (adder, "No available clock");
return;
}
pause:
{
GST_DEBUG_OBJECT (adder, "pausing task, reason %s",
gst_flow_get_name (result));
GST_OBJECT_LOCK (adder);
/* store result */
adder->srcresult = result;
/* we don't post errors or anything because upstream will do that for us
* when we pass the return value upstream. */
gst_pad_pause_task (adder->srcpad);
GST_OBJECT_UNLOCK (adder);
return;
}
eos:
{
/* store result, we are flushing now */
GST_DEBUG_OBJECT (adder, "We are EOS, pushing EOS downstream");
adder->srcresult = GST_FLOW_UNEXPECTED;
gst_pad_pause_task (adder->srcpad);
GST_OBJECT_UNLOCK (adder);
gst_pad_push_event (adder->srcpad, gst_event_new_eos ());
return;
}
}
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmSink *self = GST_SHM_SINK (bsink);
int rv = 0;
GstMapInfo map;
gboolean need_new_memory = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
GstMemory *memory = NULL;
GstBuffer *sendbuf = NULL;
gsize written_bytes;
GST_OBJECT_LOCK (self);
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK)
GST_OBJECT_LOCK (self);
else
return ret;
}
}
while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK)
GST_OBJECT_LOCK (self);
else
return ret;
}
}
if (gst_buffer_n_memory (buf) > 1) {
GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
" one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
need_new_memory = TRUE;
} else {
memory = gst_buffer_peek_memory (buf, 0);
if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
need_new_memory = TRUE;
GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
"%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
}
}
if (need_new_memory) {
if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
gsize area_size = sp_writer_get_max_buf_size (self->pipe);
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT, (NULL),
("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
"buffer of size %" G_GSIZE_FORMAT, area_size,
gst_buffer_get_size (buf)));
goto error;
}
while ((memory =
gst_shm_sink_allocator_alloc_locked (self->allocator,
gst_buffer_get_size (buf), &self->params)) == NULL) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK)
GST_OBJECT_LOCK (self);
else
return ret;
}
}
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK) {
GST_OBJECT_LOCK (self);
} else {
gst_memory_unref (memory);
return ret;
}
}
}
if (!gst_memory_map (memory, &map, GST_MAP_WRITE)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to map memory"));
goto error;
}
GST_DEBUG_OBJECT (self,
"Copying %" G_GSIZE_FORMAT " bytes into map of size %" G_GSIZE_FORMAT
" bytes.", gst_buffer_get_size (buf), map.size);
written_bytes = gst_buffer_extract (buf, 0, map.data, map.size);
GST_DEBUG_OBJECT (self, "Copied %" G_GSIZE_FORMAT " bytes.", written_bytes);
gst_memory_unmap (memory, &map);
sendbuf = gst_buffer_new ();
if (!gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to copy data into send buffer"));
gst_buffer_unref (sendbuf);
goto error;
}
gst_buffer_append_memory (sendbuf, memory);
} else {
sendbuf = gst_buffer_ref (buf);
}
if (!gst_buffer_map (sendbuf, &map, GST_MAP_READ)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to map data into send buffer"));
goto error;
}
/* Make the memory readonly as of now as we've sent it to the other side
* We know it's not mapped for writing anywhere as we just mapped it for
* reading
*/
rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);
if (rv == -1) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to send data over SHM"));
gst_buffer_unmap (sendbuf, &map);
goto error;
}
gst_buffer_unmap (sendbuf, &map);
GST_OBJECT_UNLOCK (self);
if (rv == 0) {
GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
gst_buffer_unref (sendbuf);
}
return ret;
error:
GST_OBJECT_UNLOCK (self);
return GST_FLOW_ERROR;
}
/**
* gst_uri_downloader_fetch_uri_with_range:
* @downloader: the #GstUriDownloader
* @uri: the uri
* @range_start: the starting byte index
* @range_end: the final byte index, use -1 for unspecified
*
* Returns the downloaded #GstFragment
*/
GstFragment *
gst_uri_downloader_fetch_uri_with_range (GstUriDownloader * downloader,
const gchar * uri, gint64 range_start, gint64 range_end)
{
GstStateChangeReturn ret;
GstFragment *download = NULL;
GST_DEBUG_OBJECT (downloader, "Fetching URI %s", uri);
g_mutex_lock (&downloader->priv->download_lock);
GST_OBJECT_LOCK (downloader);
if (downloader->priv->cancelled) {
GST_DEBUG_OBJECT (downloader, "Cancelled, aborting fetch");
goto quit;
}
if (!gst_uri_downloader_set_uri (downloader, uri)) {
GST_WARNING_OBJECT (downloader, "Failed to set URI");
goto quit;
}
gst_bus_set_flushing (downloader->priv->bus, FALSE);
downloader->priv->download = gst_fragment_new ();
GST_OBJECT_UNLOCK (downloader);
ret = gst_element_set_state (downloader->priv->urisrc, GST_STATE_READY);
GST_OBJECT_LOCK (downloader);
if (ret == GST_STATE_CHANGE_FAILURE || downloader->priv->download == NULL) {
GST_WARNING_OBJECT (downloader, "Failed to set src to READY");
goto quit;
}
/* might have been cancelled because of failures in state change */
if (downloader->priv->cancelled) {
goto quit;
}
if (!gst_uri_downloader_set_range (downloader, range_start, range_end)) {
GST_WARNING_OBJECT (downloader, "Failed to set range");
goto quit;
}
GST_OBJECT_UNLOCK (downloader);
ret = gst_element_set_state (downloader->priv->urisrc, GST_STATE_PLAYING);
GST_OBJECT_LOCK (downloader);
if (ret == GST_STATE_CHANGE_FAILURE) {
if (downloader->priv->download) {
g_object_unref (downloader->priv->download);
downloader->priv->download = NULL;
}
goto quit;
}
/* might have been cancelled because of failures in state change */
if (downloader->priv->cancelled) {
goto quit;
}
/* wait until:
* - the download succeed (EOS in the src pad)
* - the download failed (Error message on the fetcher bus)
* - the download was canceled
*/
GST_DEBUG_OBJECT (downloader, "Waiting to fetch the URI %s", uri);
while (!downloader->priv->cancelled && !downloader->priv->download->completed)
g_cond_wait (&downloader->priv->cond, GST_OBJECT_GET_LOCK (downloader));
if (downloader->priv->cancelled) {
if (downloader->priv->download) {
g_object_unref (downloader->priv->download);
downloader->priv->download = NULL;
}
goto quit;
}
download = downloader->priv->download;
downloader->priv->download = NULL;
if (download != NULL)
GST_INFO_OBJECT (downloader, "URI fetched successfully");
else
GST_INFO_OBJECT (downloader, "Error fetching URI");
quit:
{
if (downloader->priv->urisrc) {
GstPad *pad;
GstElement *urisrc;
GST_DEBUG_OBJECT (downloader, "Stopping source element %s",
GST_ELEMENT_NAME (downloader->priv->urisrc));
/* remove the bus' sync handler */
gst_bus_set_sync_handler (downloader->priv->bus, NULL, NULL, NULL);
/* unlink the source element from the internal pad */
pad = gst_pad_get_peer (downloader->priv->pad);
if (pad) {
gst_pad_unlink (pad, downloader->priv->pad);
gst_object_unref (pad);
}
urisrc = downloader->priv->urisrc;
downloader->priv->urisrc = NULL;
GST_OBJECT_UNLOCK (downloader);
GST_DEBUG_OBJECT (downloader, "Stopping source element %s",
GST_ELEMENT_NAME (urisrc));
/* set the element state to NULL */
gst_bus_set_flushing (downloader->priv->bus, TRUE);
gst_element_set_state (urisrc, GST_STATE_NULL);
gst_element_get_state (urisrc, NULL, NULL, GST_CLOCK_TIME_NONE);
gst_element_set_bus (urisrc, NULL);
gst_object_unref (urisrc);
} else {
GST_OBJECT_UNLOCK (downloader);
}
g_mutex_unlock (&downloader->priv->download_lock);
return download;
}
}
static GstFlowReturn
gst_audio_ringbuffer_get_range (GstPad * pad, guint64 offset, guint length,
GstBuffer ** buffer)
{
GstAudioRingbuffer *ringbuffer;
GstRingBuffer *rbuf;
GstFlowReturn ret;
ringbuffer = GST_AUDIO_RINGBUFFER_CAST (gst_pad_get_parent (pad));
rbuf = ringbuffer->buffer;
if (ringbuffer->pulling) {
GST_DEBUG_OBJECT (ringbuffer, "proxy pulling range");
ret = gst_pad_pull_range (ringbuffer->sinkpad, offset, length, buffer);
} else {
guint8 *data;
guint len;
guint64 sample;
gint bps, segsize, segtotal, sps;
gint sampleslen, segdone;
gint readseg, sampleoff;
guint8 *dest;
GST_DEBUG_OBJECT (ringbuffer,
"pulling data at %" G_GUINT64_FORMAT ", length %u", offset, length);
if (offset != ringbuffer->src_segment.last_stop) {
GST_DEBUG_OBJECT (ringbuffer, "expected offset %" G_GINT64_FORMAT,
ringbuffer->src_segment.last_stop);
}
/* first wait till we have something in the ringbuffer and it
* is running */
GST_OBJECT_LOCK (ringbuffer);
if (ringbuffer->flushing)
goto flushing;
while (ringbuffer->waiting) {
GST_DEBUG_OBJECT (ringbuffer, "waiting for unlock");
g_cond_wait (ringbuffer->cond, GST_OBJECT_GET_LOCK (ringbuffer));
GST_DEBUG_OBJECT (ringbuffer, "unlocked");
if (ringbuffer->flushing)
goto flushing;
}
GST_OBJECT_UNLOCK (ringbuffer);
bps = rbuf->spec.bytes_per_sample;
if (G_UNLIKELY (length % bps) != 0)
goto wrong_size;
segsize = rbuf->spec.segsize;
segtotal = rbuf->spec.segtotal;
sps = rbuf->samples_per_seg;
dest = GST_BUFFER_DATA (rbuf->data);
sample = offset / bps;
len = length / bps;
*buffer = gst_buffer_new_and_alloc (length);
data = GST_BUFFER_DATA (*buffer);
while (len) {
gint diff;
/* figure out the segment and the offset inside the segment where
* the sample should be read from. */
readseg = sample / sps;
sampleoff = (sample % sps);
segdone = g_atomic_int_get (&rbuf->segdone) - rbuf->segbase;
diff = readseg - segdone;
/* we can read now */
readseg = readseg % segtotal;
sampleslen = MIN (sps - sampleoff, len);
GST_DEBUG_OBJECT (ringbuffer,
"read @%p seg %d, off %d, sampleslen %d, diff %d",
dest + readseg * segsize, readseg, sampleoff, sampleslen, diff);
memcpy (data, dest + (readseg * segsize) + (sampleoff * bps),
(sampleslen * bps));
if (diff > 0)
gst_ring_buffer_advance (rbuf, diff);
len -= sampleslen;
sample += sampleslen;
data += sampleslen * bps;
}
ringbuffer->src_segment.last_stop += length;
ret = GST_FLOW_OK;
}
gst_object_unref (ringbuffer);
return ret;
/* ERRORS */
flushing:
{
GST_DEBUG_OBJECT (ringbuffer, "we are flushing");
GST_OBJECT_UNLOCK (ringbuffer);
gst_object_unref (ringbuffer);
return GST_FLOW_WRONG_STATE;
}
wrong_size:
{
GST_DEBUG_OBJECT (ringbuffer, "wrong size");
GST_ELEMENT_ERROR (ringbuffer, STREAM, WRONG_TYPE,
(NULL), ("asked to pull buffer of wrong size."));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_shmdata_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmdataSink *self = GST_SHMDATA_SINK (bsink);
int rv = 0;
GstMapInfo map;
gboolean need_new_memory = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
GstMemory *memory = NULL;
GstBuffer *sendbuf = NULL;
GST_OBJECT_LOCK (self);
if (gst_buffer_n_memory (buf) > 1) {
GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
" one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
need_new_memory = TRUE;
} else {
memory = gst_buffer_peek_memory (buf, 0);
if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
need_new_memory = TRUE;
GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
"%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
}
}
if (need_new_memory) {
if (gst_buffer_get_size (buf) > shmdata_get_shmmax(NULL)) {
gsize area_size = shmdata_get_shmmax(NULL);
GST_OBJECT_UNLOCK (self);
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Shared memory area is too small"),
("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
"buffer of size %" G_GSIZE_FORMAT, area_size,
gst_buffer_get_size (buf)));
return GST_FLOW_ERROR;
}
while ((memory =
gst_shmdata_sink_allocator_alloc_locked (self->allocator,
gst_buffer_get_size (buf), &self->params)) == NULL) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
gst_memory_map (memory, &map, GST_MAP_WRITE);
gst_buffer_extract (buf, 0, map.data, map.size);
gst_memory_unmap (memory, &map);
sendbuf = gst_buffer_new ();
gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
gst_buffer_append_memory (sendbuf, memory);
} else {
sendbuf = gst_buffer_ref (buf);
}
gst_buffer_map (sendbuf, &map, GST_MAP_READ);
/* Make the memory readonly as of now as we've sent it to the other side
* We know it's not mapped for writing anywhere as we just mapped it for
* reading
*/
shmdata_notify_clients(self->access, map.size);
self->bytes_since_last_request += map.size;
shmdata_release_one_write_access(self->access);
// wait for client to read and take the write lock
self->access = shmdata_get_one_write_access(self->shmwriter);
gst_buffer_unmap (sendbuf, &map);
GST_OBJECT_UNLOCK (self);
GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
gst_buffer_unref (sendbuf);
/* If we allocated our own memory, then unmap it */
return ret;
flushing:
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
/**
* gst_uri_downloader_fetch_uri_with_range:
* @downloader: the #GstUriDownloader
* @uri: the uri
* @range_start: the starting byte index
* @range_end: the final byte index, use -1 for unspecified
*
* Returns the downloaded #GstFragment
*/
GstFragment *
gst_uri_downloader_fetch_uri_with_range (GstUriDownloader *
downloader, const gchar * uri, const gchar * referer, gboolean compress,
gboolean refresh, gboolean allow_cache,
gint64 range_start, gint64 range_end, GError ** err)
{
GstStateChangeReturn ret;
GstFragment *download = NULL;
GST_DEBUG_OBJECT (downloader, "Fetching URI %s", uri);
g_mutex_lock (&downloader->priv->download_lock);
downloader->priv->err = NULL;
downloader->priv->got_buffer = FALSE;
GST_OBJECT_LOCK (downloader);
if (downloader->priv->cancelled) {
GST_DEBUG_OBJECT (downloader, "Cancelled, aborting fetch");
goto quit;
}
if (!gst_uri_downloader_set_uri (downloader, uri, referer, compress, refresh,
allow_cache)) {
GST_WARNING_OBJECT (downloader, "Failed to set URI");
goto quit;
}
gst_bus_set_flushing (downloader->priv->bus, FALSE);
if (downloader->priv->download)
g_object_unref (downloader->priv->download);
downloader->priv->download = gst_fragment_new ();
downloader->priv->download->range_start = range_start;
downloader->priv->download->range_end = range_end;
GST_OBJECT_UNLOCK (downloader);
ret = gst_element_set_state (downloader->priv->urisrc, GST_STATE_READY);
GST_OBJECT_LOCK (downloader);
if (ret == GST_STATE_CHANGE_FAILURE || downloader->priv->download == NULL) {
GST_WARNING_OBJECT (downloader, "Failed to set src to READY");
goto quit;
}
/* might have been cancelled because of failures in state change */
if (downloader->priv->cancelled) {
goto quit;
}
if (range_start < 0 && range_end < 0) {
if (!gst_uri_downloader_set_method (downloader, "HEAD")) {
GST_WARNING_OBJECT (downloader, "Failed to set HTTP method");
goto quit;
}
} else {
if (!gst_uri_downloader_set_range (downloader, range_start, range_end)) {
GST_WARNING_OBJECT (downloader, "Failed to set range");
goto quit;
}
}
GST_OBJECT_UNLOCK (downloader);
ret = gst_element_set_state (downloader->priv->urisrc, GST_STATE_PLAYING);
GST_OBJECT_LOCK (downloader);
if (ret == GST_STATE_CHANGE_FAILURE) {
if (downloader->priv->download) {
g_object_unref (downloader->priv->download);
downloader->priv->download = NULL;
}
goto quit;
}
/* might have been cancelled because of failures in state change */
if (downloader->priv->cancelled) {
goto quit;
}
/* wait until:
* - the download succeed (EOS in the src pad)
* - the download failed (Error message on the fetcher bus)
* - the download was canceled
*/
GST_DEBUG_OBJECT (downloader, "Waiting to fetch the URI %s", uri);
while (!downloader->priv->cancelled && !downloader->priv->download->completed)
g_cond_wait (&downloader->priv->cond, GST_OBJECT_GET_LOCK (downloader));
if (downloader->priv->cancelled) {
if (downloader->priv->download) {
g_object_unref (downloader->priv->download);
downloader->priv->download = NULL;
}
goto quit;
}
download = downloader->priv->download;
downloader->priv->download = NULL;
if (!downloader->priv->got_buffer) {
if (download->range_start < 0 && download->range_end < 0) {
/* HEAD request, so we don't expect a response */
} else {
g_object_unref (download);
download = NULL;
GST_ERROR_OBJECT (downloader, "Didn't retrieve a buffer before EOS");
}
}
if (download != NULL)
GST_INFO_OBJECT (downloader, "URI fetched successfully");
else
GST_INFO_OBJECT (downloader, "Error fetching URI");
quit:
{
if (downloader->priv->urisrc) {
GstPad *pad;
GstElement *urisrc;
urisrc = downloader->priv->urisrc;
GST_DEBUG_OBJECT (downloader, "Stopping source element %s",
GST_ELEMENT_NAME (urisrc));
/* remove the bus' sync handler */
gst_bus_set_sync_handler (downloader->priv->bus, NULL, NULL, NULL);
gst_bus_set_flushing (downloader->priv->bus, TRUE);
/* set the element state to NULL */
GST_OBJECT_UNLOCK (downloader);
if (download == NULL) {
gst_element_set_state (urisrc, GST_STATE_NULL);
} else {
GstQuery *query;
/* Download successfull, let's query the URI */
query = gst_query_new_uri ();
if (gst_element_query (urisrc, query)) {
gst_query_parse_uri (query, &download->uri);
gst_query_parse_uri_redirection (query, &download->redirect_uri);
gst_query_parse_uri_redirection_permanent (query,
&download->redirect_permanent);
}
gst_query_unref (query);
gst_element_set_state (urisrc, GST_STATE_READY);
}
GST_OBJECT_LOCK (downloader);
gst_element_set_bus (urisrc, NULL);
/* unlink the source element from the internal pad */
pad = gst_pad_get_peer (downloader->priv->pad);
if (pad) {
gst_pad_unlink (pad, downloader->priv->pad);
gst_object_unref (pad);
}
}
GST_OBJECT_UNLOCK (downloader);
if (download == NULL) {
if (!downloader->priv->err) {
g_set_error (err, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_OPEN_READ,
"Failed to download '%s'", uri);
} else {
g_propagate_error (err, downloader->priv->err);
downloader->priv->err = NULL;
}
}
downloader->priv->cancelled = FALSE;
g_mutex_unlock (&downloader->priv->download_lock);
return download;
}
}
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmSink *self = GST_SHM_SINK (bsink);
int rv = 0;
GstMapInfo map;
gboolean need_new_memory = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
GstMemory *memory = NULL;
GstBuffer *sendbuf = NULL;
GST_OBJECT_LOCK (self);
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
if (gst_buffer_n_memory (buf) > 1) {
GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
" one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
need_new_memory = TRUE;
} else {
memory = gst_buffer_peek_memory (buf, 0);
if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
need_new_memory = TRUE;
GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
"%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
}
}
if (need_new_memory) {
if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
gsize area_size = sp_writer_get_max_buf_size (self->pipe);
GST_OBJECT_UNLOCK (self);
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Shared memory area is too small"),
("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
"buffer of size %" G_GSIZE_FORMAT, area_size,
gst_buffer_get_size (buf)));
return GST_FLOW_ERROR;
}
while ((memory =
gst_shm_sink_allocator_alloc_locked (self->allocator,
gst_buffer_get_size (buf), &self->params)) == NULL) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
gst_memory_unref (memory);
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
}
gst_memory_map (memory, &map, GST_MAP_WRITE);
gst_buffer_extract (buf, 0, map.data, map.size);
gst_memory_unmap (memory, &map);
sendbuf = gst_buffer_new ();
gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
gst_buffer_append_memory (sendbuf, memory);
} else {
sendbuf = gst_buffer_ref (buf);
}
gst_buffer_map (sendbuf, &map, GST_MAP_READ);
/* Make the memory readonly as of now as we've sent it to the other side
* We know it's not mapped for writing anywhere as we just mapped it for
* reading
*/
rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);
gst_buffer_unmap (sendbuf, &map);
GST_OBJECT_UNLOCK (self);
if (rv == 0) {
GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
gst_buffer_unref (sendbuf);
} else if (rv == -1) {
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Invalid allocated buffer"),
("The shmpipe library rejects our buffer, this is a bug"));
ret = GST_FLOW_ERROR;
}
/* If we allocated our own memory, then unmap it */
return ret;
flushing:
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}