| /* GStreamer |
| * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
| * 2000 Wim Taymans <wtay@chello.be> |
| * 2003 Colin Walters <cwalters@gnome.org> |
| * 2005 Wim Taymans <wim@fluendo.com> |
| * |
| * gstqueue.c: |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:element-queue |
| * @title: queue |
| * |
| * Data is queued until one of the limits specified by the |
| * #GstQueue:max-size-buffers, #GstQueue:max-size-bytes and/or |
| * #GstQueue:max-size-time properties has been reached. Any attempt to push |
| * more buffers into the queue will block the pushing thread until more space |
| * becomes available. |
| * |
| * The queue will create a new thread on the source pad to decouple the |
| * processing on sink and source pad. |
| * |
| * You can query how many buffers are queued by reading the |
| * #GstQueue:current-level-buffers property. You can track changes |
| * by connecting to the notify::current-level-buffers signal (which |
| * like all signals will be emitted from the streaming thread). The same |
| * applies to the #GstQueue:current-level-time and |
| * #GstQueue:current-level-bytes properties. |
| * |
| * The default queue size limits are 200 buffers, 10MB of data, or |
| * one second worth of data, whichever is reached first. |
| * |
| * As said earlier, the queue blocks by default when one of the specified |
| * maximums (bytes, time, buffers) has been reached. You can set the |
| * #GstQueue:leaky property to specify that instead of blocking it should |
| * leak (drop) new or old buffers. |
| * |
| * The #GstQueue::underrun signal is emitted when the queue has less data than |
| * the specified minimum thresholds require (by default: when the queue is |
| * empty). The #GstQueue::overrun signal is emitted when the queue is filled |
| * up. Both signals are emitted from the context of the streaming thread. |
| */ |
| |
| #include "gst/gst_private.h" |
| |
| #include <gst/gst.h> |
| #include "gstqueue.h" |
| |
| #include "../../gst/gst-i18n-lib.h" |
| #include "../../gst/glib-compat-private.h" |
| |
| static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS_ANY); |
| |
| static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS_ANY); |
| |
| GST_DEBUG_CATEGORY_STATIC (queue_debug); |
| #define GST_CAT_DEFAULT (queue_debug) |
| GST_DEBUG_CATEGORY_STATIC (queue_dataflow); |
| |
| #define STATUS(queue, pad, msg) \ |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, \ |
| "(%s:%s) " msg ": %u of %u-%u buffers, %u of %u-%u " \ |
| "bytes, %" G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT \ |
| "-%" G_GUINT64_FORMAT " ns, %u items", \ |
| GST_DEBUG_PAD_NAME (pad), \ |
| queue->cur_level.buffers, \ |
| queue->min_threshold.buffers, \ |
| queue->max_size.buffers, \ |
| queue->cur_level.bytes, \ |
| queue->min_threshold.bytes, \ |
| queue->max_size.bytes, \ |
| queue->cur_level.time, \ |
| queue->min_threshold.time, \ |
| queue->max_size.time, \ |
| gst_queue_array_get_length (queue->queue)) |
| |
| /* Queue signals and args */ |
| enum |
| { |
| SIGNAL_UNDERRUN, |
| SIGNAL_RUNNING, |
| SIGNAL_OVERRUN, |
| SIGNAL_PUSHING, |
| LAST_SIGNAL |
| }; |
| |
| enum |
| { |
| PROP_0, |
| /* FIXME: don't we have another way of doing this |
| * "Gstreamer format" (frame/byte/time) queries? */ |
| PROP_CUR_LEVEL_BUFFERS, |
| PROP_CUR_LEVEL_BYTES, |
| PROP_CUR_LEVEL_TIME, |
| PROP_MAX_SIZE_BUFFERS, |
| PROP_MAX_SIZE_BYTES, |
| PROP_MAX_SIZE_TIME, |
| PROP_MIN_THRESHOLD_BUFFERS, |
| PROP_MIN_THRESHOLD_BYTES, |
| PROP_MIN_THRESHOLD_TIME, |
| PROP_LEAKY, |
| PROP_SILENT, |
| PROP_FLUSH_ON_EOS |
| }; |
| |
| /* default property values */ |
| #define DEFAULT_MAX_SIZE_BUFFERS 200 /* 200 buffers */ |
| #define DEFAULT_MAX_SIZE_BYTES (10 * 1024 * 1024) /* 10 MB */ |
| #define DEFAULT_MAX_SIZE_TIME GST_SECOND /* 1 second */ |
| |
| #define GST_QUEUE_MUTEX_LOCK(q) G_STMT_START { \ |
| g_mutex_lock (&q->qlock); \ |
| } G_STMT_END |
| |
| #define GST_QUEUE_MUTEX_LOCK_CHECK(q,label) G_STMT_START { \ |
| GST_QUEUE_MUTEX_LOCK (q); \ |
| if (q->srcresult != GST_FLOW_OK) \ |
| goto label; \ |
| } G_STMT_END |
| |
| #define GST_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \ |
| g_mutex_unlock (&q->qlock); \ |
| } G_STMT_END |
| |
| #define GST_QUEUE_WAIT_DEL_CHECK(q, label) G_STMT_START { \ |
| STATUS (q, q->sinkpad, "wait for DEL"); \ |
| q->waiting_del = TRUE; \ |
| g_cond_wait (&q->item_del, &q->qlock); \ |
| q->waiting_del = FALSE; \ |
| if (q->srcresult != GST_FLOW_OK) { \ |
| STATUS (q, q->srcpad, "received DEL wakeup"); \ |
| goto label; \ |
| } \ |
| STATUS (q, q->sinkpad, "received DEL"); \ |
| } G_STMT_END |
| |
| #define GST_QUEUE_WAIT_ADD_CHECK(q, label) G_STMT_START { \ |
| STATUS (q, q->srcpad, "wait for ADD"); \ |
| q->waiting_add = TRUE; \ |
| g_cond_wait (&q->item_add, &q->qlock); \ |
| q->waiting_add = FALSE; \ |
| if (q->srcresult != GST_FLOW_OK) { \ |
| STATUS (q, q->srcpad, "received ADD wakeup"); \ |
| goto label; \ |
| } \ |
| STATUS (q, q->srcpad, "received ADD"); \ |
| } G_STMT_END |
| |
| #define GST_QUEUE_SIGNAL_DEL(q) G_STMT_START { \ |
| if (q->waiting_del) { \ |
| STATUS (q, q->srcpad, "signal DEL"); \ |
| g_cond_signal (&q->item_del); \ |
| } \ |
| } G_STMT_END |
| |
| #define GST_QUEUE_SIGNAL_ADD(q) G_STMT_START { \ |
| if (q->waiting_add) { \ |
| STATUS (q, q->sinkpad, "signal ADD"); \ |
| g_cond_signal (&q->item_add); \ |
| } \ |
| } G_STMT_END |
| |
| #define _do_init \ |
| GST_DEBUG_CATEGORY_INIT (queue_debug, "queue", 0, "queue element"); \ |
| GST_DEBUG_CATEGORY_INIT (queue_dataflow, "queue_dataflow", 0, \ |
| "dataflow inside the queue element"); |
| #define gst_queue_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstQueue, gst_queue, GST_TYPE_ELEMENT, _do_init); |
| |
| static void gst_queue_finalize (GObject * object); |
| static void gst_queue_set_property (GObject * object, |
| guint prop_id, const GValue * value, GParamSpec * pspec); |
| static void gst_queue_get_property (GObject * object, |
| guint prop_id, GValue * value, GParamSpec * pspec); |
| |
| static GstFlowReturn gst_queue_chain (GstPad * pad, GstObject * parent, |
| GstBuffer * buffer); |
| static GstFlowReturn gst_queue_chain_list (GstPad * pad, GstObject * parent, |
| GstBufferList * buffer_list); |
| static GstFlowReturn gst_queue_push_one (GstQueue * queue); |
| static void gst_queue_loop (GstPad * pad); |
| |
| static GstFlowReturn gst_queue_handle_sink_event (GstPad * pad, |
| GstObject * parent, GstEvent * event); |
| static gboolean gst_queue_handle_sink_query (GstPad * pad, GstObject * parent, |
| GstQuery * query); |
| |
| static gboolean gst_queue_handle_src_event (GstPad * pad, GstObject * parent, |
| GstEvent * event); |
| static gboolean gst_queue_handle_src_query (GstPad * pad, GstObject * parent, |
| GstQuery * query); |
| |
| static void gst_queue_locked_flush (GstQueue * queue, gboolean full); |
| |
| static gboolean gst_queue_src_activate_mode (GstPad * pad, GstObject * parent, |
| GstPadMode mode, gboolean active); |
| static gboolean gst_queue_sink_activate_mode (GstPad * pad, GstObject * parent, |
| GstPadMode mode, gboolean active); |
| |
| static gboolean gst_queue_is_empty (GstQueue * queue); |
| static gboolean gst_queue_is_filled (GstQueue * queue); |
| |
| |
| typedef struct |
| { |
| GstMiniObject *item; |
| gsize size; |
| gboolean is_query; |
| } GstQueueItem; |
| |
| #define GST_TYPE_QUEUE_LEAKY (queue_leaky_get_type ()) |
| |
| static GType |
| queue_leaky_get_type (void) |
| { |
| static GType queue_leaky_type = 0; |
| static const GEnumValue queue_leaky[] = { |
| {GST_QUEUE_NO_LEAK, "Not Leaky", "no"}, |
| {GST_QUEUE_LEAK_UPSTREAM, "Leaky on upstream (new buffers)", "upstream"}, |
| {GST_QUEUE_LEAK_DOWNSTREAM, "Leaky on downstream (old buffers)", |
| "downstream"}, |
| {0, NULL, NULL}, |
| }; |
| |
| if (!queue_leaky_type) { |
| queue_leaky_type = g_enum_register_static ("GstQueueLeaky", queue_leaky); |
| } |
| return queue_leaky_type; |
| } |
| |
| static guint gst_queue_signals[LAST_SIGNAL] = { 0 }; |
| |
| static void |
| gst_queue_class_init (GstQueueClass * klass) |
| { |
| GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
| GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); |
| |
| gobject_class->set_property = gst_queue_set_property; |
| gobject_class->get_property = gst_queue_get_property; |
| |
| /* signals */ |
| /** |
| * GstQueue::underrun: |
| * @queue: the queue instance |
| * |
| * Reports that the buffer became empty (underrun). |
| * A buffer is empty if the total amount of data inside it (num-buffers, time, |
| * size) is lower than the boundary values which can be set through the |
| * GObject properties. |
| */ |
| gst_queue_signals[SIGNAL_UNDERRUN] = |
| g_signal_new ("underrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, |
| G_STRUCT_OFFSET (GstQueueClass, underrun), NULL, NULL, |
| g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); |
| /** |
| * GstQueue::running: |
| * @queue: the queue instance |
| * |
| * Reports that enough (min-threshold) data is in the queue. Use this signal |
| * together with the underrun signal to pause the pipeline on underrun and |
| * wait for the queue to fill-up before resume playback. |
| */ |
| gst_queue_signals[SIGNAL_RUNNING] = |
| g_signal_new ("running", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, |
| G_STRUCT_OFFSET (GstQueueClass, running), NULL, NULL, |
| g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); |
| /** |
| * GstQueue::overrun: |
| * @queue: the queue instance |
| * |
| * Reports that the buffer became full (overrun). |
| * A buffer is full if the total amount of data inside it (num-buffers, time, |
| * size) is higher than the boundary values which can be set through the |
| * GObject properties. |
| */ |
| gst_queue_signals[SIGNAL_OVERRUN] = |
| g_signal_new ("overrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, |
| G_STRUCT_OFFSET (GstQueueClass, overrun), NULL, NULL, |
| g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); |
| /** |
| * GstQueue::pushing: |
| * @queue: the queue instance |
| * |
| * Reports when the queue has enough data to start pushing data again on the |
| * source pad. |
| */ |
| gst_queue_signals[SIGNAL_PUSHING] = |
| g_signal_new ("pushing", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, |
| G_STRUCT_OFFSET (GstQueueClass, pushing), NULL, NULL, |
| g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); |
| |
| /* properties */ |
| g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BYTES, |
| g_param_spec_uint ("current-level-bytes", "Current level (kB)", |
| "Current amount of data in the queue (bytes)", |
| 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BUFFERS, |
| g_param_spec_uint ("current-level-buffers", "Current level (buffers)", |
| "Current number of buffers in the queue", |
| 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_TIME, |
| g_param_spec_uint64 ("current-level-time", "Current level (ns)", |
| "Current amount of data in the queue (in ns)", |
| 0, G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES, |
| g_param_spec_uint ("max-size-bytes", "Max. size (kB)", |
| "Max. amount of data in the queue (bytes, 0=disable)", |
| 0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BUFFERS, |
| g_param_spec_uint ("max-size-buffers", "Max. size (buffers)", |
| "Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT, |
| DEFAULT_MAX_SIZE_BUFFERS, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME, |
| g_param_spec_uint64 ("max-size-time", "Max. size (ns)", |
| "Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64, |
| DEFAULT_MAX_SIZE_TIME, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_MIN_THRESHOLD_BYTES, |
| g_param_spec_uint ("min-threshold-bytes", "Min. threshold (kB)", |
| "Min. amount of data in the queue to allow reading (bytes, 0=disable)", |
| 0, G_MAXUINT, 0, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_MIN_THRESHOLD_BUFFERS, |
| g_param_spec_uint ("min-threshold-buffers", "Min. threshold (buffers)", |
| "Min. number of buffers in the queue to allow reading (0=disable)", 0, |
| G_MAXUINT, 0, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_MIN_THRESHOLD_TIME, |
| g_param_spec_uint64 ("min-threshold-time", "Min. threshold (ns)", |
| "Min. amount of data in the queue to allow reading (in ns, 0=disable)", |
| 0, G_MAXUINT64, 0, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_LEAKY, |
| g_param_spec_enum ("leaky", "Leaky", |
| "Where the queue leaks, if at all", |
| GST_TYPE_QUEUE_LEAKY, GST_QUEUE_NO_LEAK, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| |
| /** |
| * GstQueue:silent |
| * |
| * Don't emit queue signals. Makes queues more lightweight if no signals are |
| * needed. |
| */ |
| g_object_class_install_property (gobject_class, PROP_SILENT, |
| g_param_spec_boolean ("silent", "Silent", |
| "Don't emit queue signals", FALSE, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| |
| /** |
| * GstQueue:flush-on-eos |
| * |
| * Discard all data in the queue when an EOS event is received, and pass |
| * on the EOS event as soon as possible (instead of waiting until all |
| * buffers in the queue have been processed, which is the default behaviour). |
| * |
| * Flushing the queue on EOS might be useful when capturing and encoding |
| * from a live source, to finish up the recording quickly in cases when |
| * the encoder is slow. Note that this might mean some data from the end of |
| * the recording data might be lost though (never more than the configured |
| * max. sizes though). |
| * |
| * Since: 1.2 |
| */ |
| g_object_class_install_property (gobject_class, PROP_FLUSH_ON_EOS, |
| g_param_spec_boolean ("flush-on-eos", "Flush on EOS", |
| "Discard all data in the queue when an EOS event is received", FALSE, |
| G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | |
| G_PARAM_STATIC_STRINGS)); |
| |
| gobject_class->finalize = gst_queue_finalize; |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "Queue", |
| "Generic", "Simple data queue", "Erik Walthinsen <omega@cse.ogi.edu>"); |
| gst_element_class_add_static_pad_template (gstelement_class, &srctemplate); |
| gst_element_class_add_static_pad_template (gstelement_class, &sinktemplate); |
| |
| /* Registering debug symbols for function pointers */ |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_src_activate_mode); |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_sink_event); |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_sink_query); |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_src_event); |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_src_query); |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_chain); |
| GST_DEBUG_REGISTER_FUNCPTR (gst_queue_chain_list); |
| } |
| |
| static void |
| gst_queue_init (GstQueue * queue) |
| { |
| queue->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink"); |
| |
| gst_pad_set_chain_function (queue->sinkpad, gst_queue_chain); |
| gst_pad_set_chain_list_function (queue->sinkpad, gst_queue_chain_list); |
| gst_pad_set_activatemode_function (queue->sinkpad, |
| gst_queue_sink_activate_mode); |
| gst_pad_set_event_full_function (queue->sinkpad, gst_queue_handle_sink_event); |
| gst_pad_set_query_function (queue->sinkpad, gst_queue_handle_sink_query); |
| GST_PAD_SET_PROXY_CAPS (queue->sinkpad); |
| gst_element_add_pad (GST_ELEMENT (queue), queue->sinkpad); |
| |
| queue->srcpad = gst_pad_new_from_static_template (&srctemplate, "src"); |
| |
| gst_pad_set_activatemode_function (queue->srcpad, |
| gst_queue_src_activate_mode); |
| gst_pad_set_event_function (queue->srcpad, gst_queue_handle_src_event); |
| gst_pad_set_query_function (queue->srcpad, gst_queue_handle_src_query); |
| GST_PAD_SET_PROXY_CAPS (queue->srcpad); |
| gst_element_add_pad (GST_ELEMENT (queue), queue->srcpad); |
| |
| GST_QUEUE_CLEAR_LEVEL (queue->cur_level); |
| queue->max_size.buffers = DEFAULT_MAX_SIZE_BUFFERS; |
| queue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES; |
| queue->max_size.time = DEFAULT_MAX_SIZE_TIME; |
| GST_QUEUE_CLEAR_LEVEL (queue->min_threshold); |
| GST_QUEUE_CLEAR_LEVEL (queue->orig_min_threshold); |
| gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME); |
| gst_segment_init (&queue->src_segment, GST_FORMAT_TIME); |
| queue->head_needs_discont = queue->tail_needs_discont = FALSE; |
| |
| queue->leaky = GST_QUEUE_NO_LEAK; |
| queue->srcresult = GST_FLOW_FLUSHING; |
| |
| g_mutex_init (&queue->qlock); |
| g_cond_init (&queue->item_add); |
| g_cond_init (&queue->item_del); |
| g_cond_init (&queue->query_handled); |
| |
| queue->queue = |
| gst_queue_array_new_for_struct (sizeof (GstQueueItem), |
| DEFAULT_MAX_SIZE_BUFFERS * 3 / 2); |
| |
| queue->sinktime = GST_CLOCK_STIME_NONE; |
| queue->srctime = GST_CLOCK_STIME_NONE; |
| |
| queue->sink_tainted = TRUE; |
| queue->src_tainted = TRUE; |
| |
| queue->newseg_applied_to_src = FALSE; |
| |
| GST_DEBUG_OBJECT (queue, |
| "initialized queue's not_empty & not_full conditions"); |
| } |
| |
| /* called only once, as opposed to dispose */ |
| static void |
| gst_queue_finalize (GObject * object) |
| { |
| GstQueue *queue = GST_QUEUE (object); |
| GstQueueItem *qitem; |
| |
| GST_DEBUG_OBJECT (queue, "finalizing queue"); |
| |
| while ((qitem = gst_queue_array_pop_head_struct (queue->queue))) { |
| /* FIXME: if it's a query, shouldn't we unref that too? */ |
| if (!qitem->is_query) |
| gst_mini_object_unref (qitem->item); |
| } |
| gst_queue_array_free (queue->queue); |
| |
| g_mutex_clear (&queue->qlock); |
| g_cond_clear (&queue->item_add); |
| g_cond_clear (&queue->item_del); |
| g_cond_clear (&queue->query_handled); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| /* Convenience function */ |
| static inline GstClockTimeDiff |
| my_segment_to_running_time (GstSegment * segment, GstClockTime val) |
| { |
| GstClockTimeDiff res = GST_CLOCK_STIME_NONE; |
| |
| if (GST_CLOCK_TIME_IS_VALID (val)) { |
| gboolean sign = |
| gst_segment_to_running_time_full (segment, GST_FORMAT_TIME, val, &val); |
| if (sign > 0) |
| res = val; |
| else if (sign < 0) |
| res = -val; |
| } |
| return res; |
| } |
| |
| /* calculate the diff between running time on the sink and src of the queue. |
| * This is the total amount of time in the queue. */ |
| static void |
| update_time_level (GstQueue * queue) |
| { |
| gint64 sink_time, src_time; |
| |
| if (queue->sink_tainted) { |
| GST_LOG_OBJECT (queue, "update sink time"); |
| queue->sinktime = |
| my_segment_to_running_time (&queue->sink_segment, |
| queue->sink_segment.position); |
| queue->sink_tainted = FALSE; |
| } |
| sink_time = queue->sinktime; |
| |
| if (queue->src_tainted) { |
| GST_LOG_OBJECT (queue, "update src time"); |
| queue->srctime = |
| my_segment_to_running_time (&queue->src_segment, |
| queue->src_segment.position); |
| queue->src_tainted = FALSE; |
| } |
| src_time = queue->srctime; |
| |
| GST_LOG_OBJECT (queue, "sink %" GST_STIME_FORMAT ", src %" GST_STIME_FORMAT, |
| GST_STIME_ARGS (sink_time), GST_STIME_ARGS (src_time)); |
| |
| if (GST_CLOCK_STIME_IS_VALID (src_time) |
| && GST_CLOCK_STIME_IS_VALID (sink_time) && sink_time >= src_time) |
| queue->cur_level.time = sink_time - src_time; |
| else |
| queue->cur_level.time = 0; |
| } |
| |
| /* take a SEGMENT event and apply the values to segment, updating the time |
| * level of queue. */ |
| static void |
| apply_segment (GstQueue * queue, GstEvent * event, GstSegment * segment, |
| gboolean sink) |
| { |
| gst_event_copy_segment (event, segment); |
| |
| /* now configure the values, we use these to track timestamps on the |
| * sinkpad. */ |
| if (segment->format != GST_FORMAT_TIME) { |
| /* non-time format, pretent the current time segment is closed with a |
| * 0 start and unknown stop time. */ |
| segment->format = GST_FORMAT_TIME; |
| segment->start = 0; |
| segment->stop = -1; |
| segment->time = 0; |
| } |
| if (sink) |
| queue->sink_tainted = TRUE; |
| else |
| queue->src_tainted = TRUE; |
| |
| GST_DEBUG_OBJECT (queue, "configured SEGMENT %" GST_SEGMENT_FORMAT, segment); |
| |
| /* segment can update the time level of the queue */ |
| update_time_level (queue); |
| } |
| |
| static void |
| apply_gap (GstQueue * queue, GstEvent * event, |
| GstSegment * segment, gboolean is_sink) |
| { |
| GstClockTime timestamp; |
| GstClockTime duration; |
| |
| gst_event_parse_gap (event, ×tamp, &duration); |
| |
| if (GST_CLOCK_TIME_IS_VALID (timestamp)) { |
| |
| if (GST_CLOCK_TIME_IS_VALID (duration)) { |
| timestamp += duration; |
| } |
| |
| segment->position = timestamp; |
| |
| if (is_sink) |
| queue->sink_tainted = TRUE; |
| else |
| queue->src_tainted = TRUE; |
| |
| /* calc diff with other end */ |
| update_time_level (queue); |
| } |
| } |
| |
| |
| /* take a buffer and update segment, updating the time level of the queue. */ |
| static void |
| apply_buffer (GstQueue * queue, GstBuffer * buffer, GstSegment * segment, |
| gboolean sink) |
| { |
| GstClockTime duration, timestamp; |
| |
| timestamp = GST_BUFFER_DTS_OR_PTS (buffer); |
| duration = GST_BUFFER_DURATION (buffer); |
| |
| /* if no timestamp is set, assume it's continuous with the previous |
| * time */ |
| if (timestamp == GST_CLOCK_TIME_NONE) |
| timestamp = segment->position; |
| |
| /* add duration */ |
| if (duration != GST_CLOCK_TIME_NONE) |
| timestamp += duration; |
| |
| GST_LOG_OBJECT (queue, "%s position updated to %" GST_TIME_FORMAT, |
| segment == &queue->sink_segment ? "sink" : "src", |
| GST_TIME_ARGS (timestamp)); |
| |
| segment->position = timestamp; |
| if (sink) |
| queue->sink_tainted = TRUE; |
| else |
| queue->src_tainted = TRUE; |
| |
| |
| /* calc diff with other end */ |
| update_time_level (queue); |
| } |
| |
| static gboolean |
| buffer_list_apply_time (GstBuffer ** buf, guint idx, gpointer user_data) |
| { |
| GstClockTime *timestamp = user_data; |
| GstClockTime btime; |
| |
| GST_TRACE ("buffer %u has pts %" GST_TIME_FORMAT " dts %" GST_TIME_FORMAT |
| " duration %" GST_TIME_FORMAT, idx, GST_TIME_ARGS (GST_BUFFER_DTS (*buf)), |
| GST_TIME_ARGS (GST_BUFFER_PTS (*buf)), |
| GST_TIME_ARGS (GST_BUFFER_DURATION (*buf))); |
| |
| btime = GST_BUFFER_DTS_OR_PTS (*buf); |
| if (GST_CLOCK_TIME_IS_VALID (btime)) |
| *timestamp = btime; |
| |
| if (GST_BUFFER_DURATION_IS_VALID (*buf)) |
| *timestamp += GST_BUFFER_DURATION (*buf); |
| |
| GST_TRACE ("ts now %" GST_TIME_FORMAT, GST_TIME_ARGS (*timestamp)); |
| |
| return TRUE; |
| } |
| |
| /* take a buffer list and update segment, updating the time level of the queue */ |
| static void |
| apply_buffer_list (GstQueue * queue, GstBufferList * buffer_list, |
| GstSegment * segment, gboolean sink) |
| { |
| GstClockTime timestamp; |
| |
| /* if no timestamp is set, assume it's continuous with the previous time */ |
| timestamp = segment->position; |
| |
| gst_buffer_list_foreach (buffer_list, buffer_list_apply_time, ×tamp); |
| |
| GST_DEBUG_OBJECT (queue, "position updated to %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (timestamp)); |
| |
| segment->position = timestamp; |
| |
| if (sink) |
| queue->sink_tainted = TRUE; |
| else |
| queue->src_tainted = TRUE; |
| |
| /* calc diff with other end */ |
| update_time_level (queue); |
| } |
| |
| static void |
| gst_queue_locked_flush (GstQueue * queue, gboolean full) |
| { |
| GstQueueItem *qitem; |
| |
| while ((qitem = gst_queue_array_pop_head_struct (queue->queue))) { |
| /* Then lose another reference because we are supposed to destroy that |
| data when flushing */ |
| if (!full && !qitem->is_query && GST_IS_EVENT (qitem->item) |
| && GST_EVENT_IS_STICKY (qitem->item) |
| && GST_EVENT_TYPE (qitem->item) != GST_EVENT_SEGMENT |
| && GST_EVENT_TYPE (qitem->item) != GST_EVENT_EOS) { |
| gst_pad_store_sticky_event (queue->srcpad, GST_EVENT_CAST (qitem->item)); |
| } |
| if (!qitem->is_query) |
| gst_mini_object_unref (qitem->item); |
| memset (qitem, 0, sizeof (GstQueueItem)); |
| } |
| queue->last_query = FALSE; |
| g_cond_signal (&queue->query_handled); |
| GST_QUEUE_CLEAR_LEVEL (queue->cur_level); |
| queue->min_threshold.buffers = queue->orig_min_threshold.buffers; |
| queue->min_threshold.bytes = queue->orig_min_threshold.bytes; |
| queue->min_threshold.time = queue->orig_min_threshold.time; |
| gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME); |
| gst_segment_init (&queue->src_segment, GST_FORMAT_TIME); |
| queue->head_needs_discont = queue->tail_needs_discont = FALSE; |
| |
| queue->sinktime = queue->srctime = GST_CLOCK_STIME_NONE; |
| queue->sink_tainted = queue->src_tainted = TRUE; |
| |
| /* we deleted a lot of something */ |
| GST_QUEUE_SIGNAL_DEL (queue); |
| } |
| |
| /* enqueue an item an update the level stats, with QUEUE_LOCK */ |
| static inline void |
| gst_queue_locked_enqueue_buffer (GstQueue * queue, gpointer item) |
| { |
| GstQueueItem qitem; |
| GstBuffer *buffer = GST_BUFFER_CAST (item); |
| gsize bsize = gst_buffer_get_size (buffer); |
| |
| /* add buffer to the statistics */ |
| queue->cur_level.buffers++; |
| queue->cur_level.bytes += bsize; |
| apply_buffer (queue, buffer, &queue->sink_segment, TRUE); |
| |
| qitem.item = item; |
| qitem.is_query = FALSE; |
| qitem.size = bsize; |
| gst_queue_array_push_tail_struct (queue->queue, &qitem); |
| GST_QUEUE_SIGNAL_ADD (queue); |
| } |
| |
| static inline void |
| gst_queue_locked_enqueue_buffer_list (GstQueue * queue, gpointer item) |
| { |
| GstQueueItem qitem; |
| GstBufferList *buffer_list = GST_BUFFER_LIST_CAST (item); |
| gsize bsize; |
| |
| bsize = gst_buffer_list_calculate_size (buffer_list); |
| |
| /* add buffer to the statistics */ |
| queue->cur_level.buffers += gst_buffer_list_length (buffer_list); |
| queue->cur_level.bytes += bsize; |
| apply_buffer_list (queue, buffer_list, &queue->sink_segment, TRUE); |
| |
| qitem.item = item; |
| qitem.is_query = FALSE; |
| qitem.size = bsize; |
| gst_queue_array_push_tail_struct (queue->queue, &qitem); |
| GST_QUEUE_SIGNAL_ADD (queue); |
| } |
| |
| static inline void |
| gst_queue_locked_enqueue_event (GstQueue * queue, gpointer item) |
| { |
| GstQueueItem qitem; |
| GstEvent *event = GST_EVENT_CAST (item); |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_EOS: |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from upstream"); |
| /* Zero the thresholds, this makes sure the queue is completely |
| * filled and we can read all data from the queue. */ |
| if (queue->flush_on_eos) |
| gst_queue_locked_flush (queue, FALSE); |
| else |
| GST_QUEUE_CLEAR_LEVEL (queue->min_threshold); |
| /* mark the queue as EOS. This prevents us from accepting more data. */ |
| queue->eos = TRUE; |
| break; |
| case GST_EVENT_SEGMENT: |
| apply_segment (queue, event, &queue->sink_segment, TRUE); |
| /* if the queue is empty, apply sink segment on the source */ |
| if (gst_queue_array_is_empty (queue->queue)) { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "Apply segment on srcpad"); |
| apply_segment (queue, event, &queue->src_segment, FALSE); |
| queue->newseg_applied_to_src = TRUE; |
| } |
| /* a new segment allows us to accept more buffers if we got EOS |
| * from downstream */ |
| queue->unexpected = FALSE; |
| break; |
| case GST_EVENT_GAP: |
| apply_gap (queue, event, &queue->sink_segment, TRUE); |
| break; |
| default: |
| break; |
| } |
| |
| qitem.item = item; |
| qitem.is_query = FALSE; |
| qitem.size = 0; |
| gst_queue_array_push_tail_struct (queue->queue, &qitem); |
| GST_QUEUE_SIGNAL_ADD (queue); |
| } |
| |
| /* dequeue an item from the queue and update level stats, with QUEUE_LOCK */ |
| static GstMiniObject * |
| gst_queue_locked_dequeue (GstQueue * queue) |
| { |
| GstQueueItem *qitem; |
| GstMiniObject *item; |
| gsize bufsize; |
| |
| qitem = gst_queue_array_pop_head_struct (queue->queue); |
| if (qitem == NULL) |
| goto no_item; |
| |
| item = qitem->item; |
| bufsize = qitem->size; |
| |
| if (GST_IS_BUFFER (item)) { |
| GstBuffer *buffer = GST_BUFFER_CAST (item); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "retrieved buffer %p from queue", buffer); |
| |
| queue->cur_level.buffers--; |
| queue->cur_level.bytes -= bufsize; |
| apply_buffer (queue, buffer, &queue->src_segment, FALSE); |
| |
| /* if the queue is empty now, update the other side */ |
| if (queue->cur_level.buffers == 0) |
| queue->cur_level.time = 0; |
| } else if (GST_IS_BUFFER_LIST (item)) { |
| GstBufferList *buffer_list = GST_BUFFER_LIST_CAST (item); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "retrieved buffer list %p from queue", buffer_list); |
| |
| queue->cur_level.buffers -= gst_buffer_list_length (buffer_list); |
| queue->cur_level.bytes -= bufsize; |
| apply_buffer_list (queue, buffer_list, &queue->src_segment, FALSE); |
| |
| /* if the queue is empty now, update the other side */ |
| if (queue->cur_level.buffers == 0) |
| queue->cur_level.time = 0; |
| } else if (GST_IS_EVENT (item)) { |
| GstEvent *event = GST_EVENT_CAST (item); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "retrieved event %p from queue", event); |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_EOS: |
| /* queue is empty now that we dequeued the EOS */ |
| GST_QUEUE_CLEAR_LEVEL (queue->cur_level); |
| break; |
| case GST_EVENT_SEGMENT: |
| /* apply newsegment if it has not already been applied */ |
| if (G_LIKELY (!queue->newseg_applied_to_src)) { |
| apply_segment (queue, event, &queue->src_segment, FALSE); |
| } else { |
| queue->newseg_applied_to_src = FALSE; |
| } |
| break; |
| case GST_EVENT_GAP: |
| apply_gap (queue, event, &queue->src_segment, FALSE); |
| break; |
| default: |
| break; |
| } |
| } else if (GST_IS_QUERY (item)) { |
| GstQuery *query = GST_QUERY_CAST (item); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "retrieved query %p from queue", query); |
| } else { |
| g_warning |
| ("Unexpected item %p dequeued from queue %s (refcounting problem?)", |
| item, GST_OBJECT_NAME (queue)); |
| item = NULL; |
| } |
| GST_QUEUE_SIGNAL_DEL (queue); |
| |
| return item; |
| |
| /* ERRORS */ |
| no_item: |
| { |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "the queue is empty"); |
| return NULL; |
| } |
| } |
| |
| static GstFlowReturn |
| gst_queue_handle_sink_event (GstPad * pad, GstObject * parent, GstEvent * event) |
| { |
| gboolean ret = TRUE; |
| GstQueue *queue; |
| |
| queue = GST_QUEUE (parent); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "Received event '%s'", |
| GST_EVENT_TYPE_NAME (event)); |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_FLUSH_START: |
| /* forward event */ |
| ret = gst_pad_push_event (queue->srcpad, event); |
| |
| /* now unblock the chain function */ |
| GST_QUEUE_MUTEX_LOCK (queue); |
| queue->srcresult = GST_FLOW_FLUSHING; |
| /* unblock the loop and chain functions */ |
| GST_QUEUE_SIGNAL_ADD (queue); |
| GST_QUEUE_SIGNAL_DEL (queue); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| /* make sure it pauses, this should happen since we sent |
| * flush_start downstream. */ |
| gst_pad_pause_task (queue->srcpad); |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "loop stopped"); |
| |
| /* unblock query handler after the streaming thread is shut down. |
| * Otherwise downstream might have a query that is already unreffed |
| * upstream */ |
| GST_QUEUE_MUTEX_LOCK (queue); |
| queue->last_query = FALSE; |
| g_cond_signal (&queue->query_handled); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| break; |
| case GST_EVENT_FLUSH_STOP: |
| /* forward event */ |
| ret = gst_pad_push_event (queue->srcpad, event); |
| |
| GST_QUEUE_MUTEX_LOCK (queue); |
| gst_queue_locked_flush (queue, FALSE); |
| queue->srcresult = GST_FLOW_OK; |
| queue->eos = FALSE; |
| queue->unexpected = FALSE; |
| if (gst_pad_is_active (queue->srcpad)) { |
| gst_pad_start_task (queue->srcpad, (GstTaskFunction) gst_queue_loop, |
| queue->srcpad, NULL); |
| } else { |
| GST_INFO_OBJECT (queue->srcpad, "not re-starting task on srcpad, " |
| "pad not active any longer"); |
| } |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| STATUS (queue, pad, "after flush"); |
| break; |
| default: |
| if (GST_EVENT_IS_SERIALIZED (event)) { |
| /* serialized events go in the queue */ |
| GST_QUEUE_MUTEX_LOCK (queue); |
| |
| /* STREAM_START and SEGMENT reset the EOS status of a |
| * pad. Change the cached sinkpad flow result accordingly */ |
| if (queue->srcresult == GST_FLOW_EOS |
| && (GST_EVENT_TYPE (event) == GST_EVENT_STREAM_START |
| || GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT)) |
| queue->srcresult = GST_FLOW_OK; |
| |
| if (queue->srcresult != GST_FLOW_OK) { |
| /* Errors in sticky event pushing are no problem and ignored here |
| * as they will cause more meaningful errors during data flow. |
| * For EOS events, that are not followed by data flow, we still |
| * return FALSE here though and report an error. |
| */ |
| if (!GST_EVENT_IS_STICKY (event)) { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| goto out_flow_error; |
| } else if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) { |
| if (queue->srcresult == GST_FLOW_NOT_LINKED |
| || queue->srcresult < GST_FLOW_EOS) { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| GST_ELEMENT_FLOW_ERROR (queue, queue->srcresult); |
| } else { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } |
| goto out_flow_error; |
| } |
| } |
| |
| /* refuse more events on EOS unless they unset the EOS status */ |
| if (queue->eos) { |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_STREAM_START: |
| case GST_EVENT_SEGMENT: |
| /* Restart the loop */ |
| if (GST_PAD_MODE (queue->srcpad) == GST_PAD_MODE_PUSH) { |
| queue->srcresult = GST_FLOW_OK; |
| queue->eos = FALSE; |
| queue->unexpected = FALSE; |
| gst_pad_start_task (queue->srcpad, |
| (GstTaskFunction) gst_queue_loop, queue->srcpad, NULL); |
| } else { |
| queue->eos = FALSE; |
| queue->unexpected = FALSE; |
| } |
| |
| break; |
| default: |
| goto out_eos; |
| } |
| } |
| |
| gst_queue_locked_enqueue_event (queue, event); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } else { |
| /* non-serialized events are forwarded downstream immediately */ |
| ret = gst_pad_push_event (queue->srcpad, event); |
| } |
| break; |
| } |
| if (ret == FALSE) { |
| GST_ERROR_OBJECT (queue, "Failed to push event"); |
| return GST_FLOW_ERROR; |
| } |
| return GST_FLOW_OK; |
| |
| /* ERRORS */ |
| out_eos: |
| { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "refusing event, we are EOS"); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| gst_event_unref (event); |
| return GST_FLOW_EOS; |
| } |
| out_flow_error: |
| { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "refusing event, we have a downstream flow error: %s", |
| gst_flow_get_name (queue->srcresult)); |
| gst_event_unref (event); |
| return queue->srcresult; |
| } |
| } |
| |
| static gboolean |
| gst_queue_handle_sink_query (GstPad * pad, GstObject * parent, GstQuery * query) |
| { |
| GstQueue *queue = GST_QUEUE_CAST (parent); |
| gboolean res; |
| |
| switch (GST_QUERY_TYPE (query)) { |
| default: |
| if (G_UNLIKELY (GST_QUERY_IS_SERIALIZED (query))) { |
| GstQueueItem qitem; |
| |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| GST_LOG_OBJECT (queue, "queuing query %p (%s)", query, |
| GST_QUERY_TYPE_NAME (query)); |
| qitem.item = GST_MINI_OBJECT_CAST (query); |
| qitem.is_query = TRUE; |
| qitem.size = 0; |
| gst_queue_array_push_tail_struct (queue->queue, &qitem); |
| GST_QUEUE_SIGNAL_ADD (queue); |
| while (queue->srcresult == GST_FLOW_OK && |
| queue->last_handled_query != query) |
| g_cond_wait (&queue->query_handled, &queue->qlock); |
| queue->last_handled_query = NULL; |
| if (queue->srcresult != GST_FLOW_OK) |
| goto out_flushing; |
| res = queue->last_query; |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } else { |
| res = gst_pad_query_default (pad, parent, query); |
| } |
| break; |
| } |
| return res; |
| |
| /* ERRORS */ |
| out_flushing: |
| { |
| GST_DEBUG_OBJECT (queue, "we are flushing"); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_queue_is_empty (GstQueue * queue) |
| { |
| GstQueueItem *tail; |
| |
| tail = gst_queue_array_peek_tail_struct (queue->queue); |
| |
| if (tail == NULL) |
| return TRUE; |
| |
| /* Only consider the queue empty if the minimum thresholds |
| * are not reached and data is at the queue tail. Otherwise |
| * we would block forever on serialized queries. |
| */ |
| if (!GST_IS_BUFFER (tail->item) && !GST_IS_BUFFER_LIST (tail->item)) |
| return FALSE; |
| |
| /* It is possible that a max size is reached before all min thresholds are. |
| * Therefore, only consider it empty if it is not filled. */ |
| return ((queue->min_threshold.buffers > 0 && |
| queue->cur_level.buffers < queue->min_threshold.buffers) || |
| (queue->min_threshold.bytes > 0 && |
| queue->cur_level.bytes < queue->min_threshold.bytes) || |
| (queue->min_threshold.time > 0 && |
| queue->cur_level.time < queue->min_threshold.time)) && |
| !gst_queue_is_filled (queue); |
| } |
| |
| static gboolean |
| gst_queue_is_filled (GstQueue * queue) |
| { |
| return (((queue->max_size.buffers > 0 && |
| queue->cur_level.buffers >= queue->max_size.buffers) || |
| (queue->max_size.bytes > 0 && |
| queue->cur_level.bytes >= queue->max_size.bytes) || |
| (queue->max_size.time > 0 && |
| queue->cur_level.time >= queue->max_size.time))); |
| } |
| |
| static void |
| gst_queue_leak_downstream (GstQueue * queue) |
| { |
| /* for as long as the queue is filled, dequeue an item and discard it */ |
| while (gst_queue_is_filled (queue)) { |
| GstMiniObject *leak; |
| |
| leak = gst_queue_locked_dequeue (queue); |
| /* there is nothing to dequeue and the queue is still filled.. This should |
| * not happen */ |
| g_assert (leak != NULL); |
| |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, |
| "queue is full, leaking item %p on downstream end", leak); |
| if (GST_IS_EVENT (leak) && GST_EVENT_IS_STICKY (leak)) { |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, |
| "Storing sticky event %s on srcpad", GST_EVENT_TYPE_NAME (leak)); |
| gst_pad_store_sticky_event (queue->srcpad, GST_EVENT_CAST (leak)); |
| } |
| |
| if (!GST_IS_QUERY (leak)) |
| gst_mini_object_unref (leak); |
| |
| /* last buffer needs to get a DISCONT flag */ |
| queue->head_needs_discont = TRUE; |
| } |
| } |
| |
| static gboolean |
| discont_first_buffer (GstBuffer ** buffer, guint i, gpointer user_data) |
| { |
| GstQueue *queue = user_data; |
| GstBuffer *subbuffer = gst_buffer_make_writable (*buffer); |
| |
| if (subbuffer) { |
| *buffer = subbuffer; |
| GST_BUFFER_FLAG_SET (*buffer, GST_BUFFER_FLAG_DISCONT); |
| } else { |
| GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT"); |
| } |
| |
| return FALSE; |
| } |
| |
| static GstFlowReturn |
| gst_queue_chain_buffer_or_list (GstPad * pad, GstObject * parent, |
| GstMiniObject * obj, gboolean is_list) |
| { |
| GstQueue *queue; |
| |
| queue = GST_QUEUE_CAST (parent); |
| |
| /* we have to lock the queue since we span threads */ |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| /* when we received EOS, we refuse any more data */ |
| if (queue->eos) |
| goto out_eos; |
| if (queue->unexpected) |
| goto out_unexpected; |
| |
| if (!is_list) { |
| GstClockTime duration, timestamp; |
| GstBuffer *buffer = GST_BUFFER_CAST (obj); |
| |
| timestamp = GST_BUFFER_DTS_OR_PTS (buffer); |
| duration = GST_BUFFER_DURATION (buffer); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received buffer %p of size %" |
| G_GSIZE_FORMAT ", time %" GST_TIME_FORMAT ", duration %" |
| GST_TIME_FORMAT, buffer, gst_buffer_get_size (buffer), |
| GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration)); |
| } else { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "received buffer list %p with %u buffers", obj, |
| gst_buffer_list_length (GST_BUFFER_LIST_CAST (obj))); |
| } |
| |
| /* We make space available if we're "full" according to whatever |
| * the user defined as "full". Note that this only applies to buffers. |
| * We always handle events and they don't count in our statistics. */ |
| while (gst_queue_is_filled (queue)) { |
| if (!queue->silent) { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| g_signal_emit (queue, gst_queue_signals[SIGNAL_OVERRUN], 0); |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| /* we recheck, the signal could have changed the thresholds */ |
| if (!gst_queue_is_filled (queue)) |
| break; |
| } |
| |
| /* how are we going to make space for this buffer? */ |
| switch (queue->leaky) { |
| case GST_QUEUE_LEAK_UPSTREAM: |
| /* next buffer needs to get a DISCONT flag */ |
| queue->tail_needs_discont = TRUE; |
| /* leak current buffer */ |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, |
| "queue is full, leaking buffer on upstream end"); |
| /* now we can clean up and exit right away */ |
| goto out_unref; |
| case GST_QUEUE_LEAK_DOWNSTREAM: |
| gst_queue_leak_downstream (queue); |
| break; |
| default: |
| g_warning ("Unknown leaky type, using default"); |
| /* fall-through */ |
| case GST_QUEUE_NO_LEAK: |
| { |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, |
| "queue is full, waiting for free space"); |
| |
| /* don't leak. Instead, wait for space to be available */ |
| do { |
| /* for as long as the queue is filled, wait till an item was deleted. */ |
| GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing); |
| } while (gst_queue_is_filled (queue)); |
| |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not full"); |
| |
| if (!queue->silent) { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0); |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| } |
| break; |
| } |
| } |
| } |
| |
| if (queue->tail_needs_discont) { |
| if (!is_list) { |
| GstBuffer *buffer = GST_BUFFER_CAST (obj); |
| GstBuffer *subbuffer = gst_buffer_make_writable (buffer); |
| |
| if (subbuffer) { |
| buffer = subbuffer; |
| GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); |
| } else { |
| GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT"); |
| } |
| |
| obj = GST_MINI_OBJECT_CAST (buffer); |
| } else { |
| GstBufferList *buffer_list = GST_BUFFER_LIST_CAST (obj); |
| |
| buffer_list = gst_buffer_list_make_writable (buffer_list); |
| gst_buffer_list_foreach (buffer_list, discont_first_buffer, queue); |
| obj = GST_MINI_OBJECT_CAST (buffer_list); |
| } |
| queue->tail_needs_discont = FALSE; |
| } |
| |
| /* put buffer in queue now */ |
| if (is_list) |
| gst_queue_locked_enqueue_buffer_list (queue, obj); |
| else |
| gst_queue_locked_enqueue_buffer (queue, obj); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| return GST_FLOW_OK; |
| |
| /* special conditions */ |
| out_unref: |
| { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| gst_mini_object_unref (obj); |
| |
| return GST_FLOW_OK; |
| } |
| out_flushing: |
| { |
| GstFlowReturn ret = queue->srcresult; |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "exit because task paused, reason: %s", gst_flow_get_name (ret)); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| gst_mini_object_unref (obj); |
| |
| return ret; |
| } |
| out_eos: |
| { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS"); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| gst_mini_object_unref (obj); |
| |
| return GST_FLOW_EOS; |
| } |
| out_unexpected: |
| { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS"); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| gst_mini_object_unref (obj); |
| |
| return GST_FLOW_EOS; |
| } |
| } |
| |
| static GstFlowReturn |
| gst_queue_chain_list (GstPad * pad, GstObject * parent, |
| GstBufferList * buffer_list) |
| { |
| return gst_queue_chain_buffer_or_list (pad, parent, |
| GST_MINI_OBJECT_CAST (buffer_list), TRUE); |
| } |
| |
| static GstFlowReturn |
| gst_queue_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer) |
| { |
| return gst_queue_chain_buffer_or_list (pad, parent, |
| GST_MINI_OBJECT_CAST (buffer), FALSE); |
| } |
| |
| /* dequeue an item from the queue an push it downstream. This functions returns |
| * the result of the push. */ |
| static GstFlowReturn |
| gst_queue_push_one (GstQueue * queue) |
| { |
| GstFlowReturn result = queue->srcresult; |
| GstMiniObject *data; |
| gboolean is_list; |
| |
| data = gst_queue_locked_dequeue (queue); |
| if (data == NULL) |
| goto no_item; |
| |
| next: |
| is_list = GST_IS_BUFFER_LIST (data); |
| |
| if (GST_IS_BUFFER (data) || is_list) { |
| if (!is_list) { |
| GstBuffer *buffer; |
| |
| buffer = GST_BUFFER_CAST (data); |
| |
| if (queue->head_needs_discont) { |
| GstBuffer *subbuffer = gst_buffer_make_writable (buffer); |
| |
| if (subbuffer) { |
| buffer = subbuffer; |
| GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); |
| } else { |
| GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT"); |
| } |
| queue->head_needs_discont = FALSE; |
| } |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| result = gst_pad_push (queue->srcpad, buffer); |
| } else { |
| GstBufferList *buffer_list; |
| |
| buffer_list = GST_BUFFER_LIST_CAST (data); |
| |
| if (queue->head_needs_discont) { |
| buffer_list = gst_buffer_list_make_writable (buffer_list); |
| gst_buffer_list_foreach (buffer_list, discont_first_buffer, queue); |
| queue->head_needs_discont = FALSE; |
| } |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| result = gst_pad_push_list (queue->srcpad, buffer_list); |
| } |
| |
| /* need to check for srcresult here as well */ |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| |
| if (result == GST_FLOW_EOS) { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from downstream"); |
| /* stop pushing buffers, we dequeue all items until we see an item that we |
| * can push again, which is EOS or SEGMENT. If there is nothing in the |
| * queue we can push, we set a flag to make the sinkpad refuse more |
| * buffers with an EOS return value. */ |
| while ((data = gst_queue_locked_dequeue (queue))) { |
| if (GST_IS_BUFFER (data)) { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "dropping EOS buffer %p", data); |
| gst_buffer_unref (GST_BUFFER_CAST (data)); |
| } else if (GST_IS_BUFFER_LIST (data)) { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "dropping EOS buffer list %p", data); |
| gst_buffer_list_unref (GST_BUFFER_LIST_CAST (data)); |
| } else if (GST_IS_EVENT (data)) { |
| GstEvent *event = GST_EVENT_CAST (data); |
| GstEventType type = GST_EVENT_TYPE (event); |
| |
| if (type == GST_EVENT_EOS || type == GST_EVENT_SEGMENT |
| || type == GST_EVENT_STREAM_START) { |
| /* we found a pushable item in the queue, push it out */ |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "pushing pushable event %s after EOS", |
| GST_EVENT_TYPE_NAME (event)); |
| goto next; |
| } |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "dropping EOS event %p", event); |
| gst_event_unref (event); |
| } else if (GST_IS_QUERY (data)) { |
| GstQuery *query = GST_QUERY_CAST (data); |
| |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "dropping query %p because of EOS", query); |
| queue->last_query = FALSE; |
| g_cond_signal (&queue->query_handled); |
| } |
| } |
| /* no more items in the queue. Set the unexpected flag so that upstream |
| * make us refuse any more buffers on the sinkpad. Since we will still |
| * accept EOS and SEGMENT we return _FLOW_OK to the caller so that the |
| * task function does not shut down. */ |
| queue->unexpected = TRUE; |
| result = GST_FLOW_OK; |
| } |
| } else if (GST_IS_EVENT (data)) { |
| GstEvent *event = GST_EVENT_CAST (data); |
| GstEventType type = GST_EVENT_TYPE (event); |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| gst_pad_push_event (queue->srcpad, event); |
| |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| /* if we're EOS, return EOS so that the task pauses. */ |
| if (type == GST_EVENT_EOS) { |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "pushed EOS event %p, return EOS", event); |
| result = GST_FLOW_EOS; |
| } |
| } else if (GST_IS_QUERY (data)) { |
| GstQuery *query = GST_QUERY_CAST (data); |
| gboolean ret; |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| ret = gst_pad_peer_query (queue->srcpad, query); |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing_query); |
| queue->last_query = ret; |
| queue->last_handled_query = query; |
| g_cond_signal (&queue->query_handled); |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "did query %p, return %d", query, queue->last_query); |
| } |
| return result; |
| |
| /* ERRORS */ |
| no_item: |
| { |
| GST_CAT_ERROR_OBJECT (queue_dataflow, queue, |
| "exit because we have no item in the queue"); |
| return GST_FLOW_ERROR; |
| } |
| out_flushing: |
| { |
| GstFlowReturn ret = queue->srcresult; |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "exit because task paused, reason: %s", gst_flow_get_name (ret)); |
| return ret; |
| } |
| out_flushing_query: |
| { |
| GstFlowReturn ret = queue->srcresult; |
| queue->last_query = FALSE; |
| g_cond_signal (&queue->query_handled); |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "exit because task paused, reason: %s", gst_flow_get_name (ret)); |
| return ret; |
| } |
| } |
| |
| static void |
| gst_queue_loop (GstPad * pad) |
| { |
| GstQueue *queue; |
| GstFlowReturn ret; |
| |
| queue = (GstQueue *) GST_PAD_PARENT (pad); |
| |
| /* have to lock for thread-safety */ |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| |
| while (gst_queue_is_empty (queue)) { |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is empty"); |
| if (!queue->silent) { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| g_signal_emit (queue, gst_queue_signals[SIGNAL_UNDERRUN], 0); |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| } |
| |
| /* we recheck, the signal could have changed the thresholds */ |
| while (gst_queue_is_empty (queue)) { |
| GST_QUEUE_WAIT_ADD_CHECK (queue, out_flushing); |
| } |
| |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not empty"); |
| if (!queue->silent) { |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0); |
| g_signal_emit (queue, gst_queue_signals[SIGNAL_PUSHING], 0); |
| GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing); |
| } |
| } |
| |
| ret = gst_queue_push_one (queue); |
| queue->srcresult = ret; |
| if (ret != GST_FLOW_OK) |
| goto out_flushing; |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| return; |
| |
| /* ERRORS */ |
| out_flushing: |
| { |
| gboolean eos = queue->eos; |
| GstFlowReturn ret = queue->srcresult; |
| |
| gst_pad_pause_task (queue->srcpad); |
| GST_CAT_LOG_OBJECT (queue_dataflow, queue, |
| "pause task, reason: %s", gst_flow_get_name (ret)); |
| if (ret == GST_FLOW_FLUSHING) { |
| gst_queue_locked_flush (queue, FALSE); |
| } else { |
| GST_QUEUE_SIGNAL_DEL (queue); |
| queue->last_query = FALSE; |
| g_cond_signal (&queue->query_handled); |
| } |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| /* let app know about us giving up if upstream is not expected to do so */ |
| /* EOS is already taken care of elsewhere */ |
| if (eos && (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS)) { |
| GST_ELEMENT_FLOW_ERROR (queue, ret); |
| gst_pad_push_event (queue->srcpad, gst_event_new_eos ()); |
| } |
| return; |
| } |
| } |
| |
| static gboolean |
| gst_queue_handle_src_event (GstPad * pad, GstObject * parent, GstEvent * event) |
| { |
| gboolean res = TRUE; |
| GstQueue *queue = GST_QUEUE (parent); |
| |
| #ifndef GST_DISABLE_GST_DEBUG |
| GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%d)", |
| event, GST_EVENT_TYPE (event)); |
| #endif |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_RECONFIGURE: |
| GST_QUEUE_MUTEX_LOCK (queue); |
| if (queue->srcresult == GST_FLOW_NOT_LINKED) { |
| /* when we got not linked, assume downstream is linked again now and we |
| * can try to start pushing again */ |
| queue->srcresult = GST_FLOW_OK; |
| gst_pad_start_task (pad, (GstTaskFunction) gst_queue_loop, pad, NULL); |
| } |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| res = gst_pad_push_event (queue->sinkpad, event); |
| break; |
| default: |
| res = gst_pad_event_default (pad, parent, event); |
| break; |
| } |
| |
| |
| return res; |
| } |
| |
| static gboolean |
| gst_queue_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query) |
| { |
| GstQueue *queue = GST_QUEUE (parent); |
| gboolean res; |
| |
| switch (GST_QUERY_TYPE (query)) { |
| case GST_QUERY_SCHEDULING:{ |
| gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH); |
| res = TRUE; |
| break; |
| } |
| default: |
| res = gst_pad_query_default (pad, parent, query); |
| break; |
| } |
| |
| if (!res) |
| return FALSE; |
| |
| /* Adjust peer response for data contained in queue */ |
| switch (GST_QUERY_TYPE (query)) { |
| case GST_QUERY_POSITION: |
| { |
| gint64 peer_pos; |
| GstFormat format; |
| |
| /* get peer position */ |
| gst_query_parse_position (query, &format, &peer_pos); |
| |
| /* FIXME: this code assumes that there's no discont in the queue */ |
| switch (format) { |
| case GST_FORMAT_BYTES: |
| peer_pos -= queue->cur_level.bytes; |
| if (peer_pos < 0) /* Clamp result to 0 */ |
| peer_pos = 0; |
| break; |
| case GST_FORMAT_TIME: |
| peer_pos -= queue->cur_level.time; |
| if (peer_pos < 0) /* Clamp result to 0 */ |
| peer_pos = 0; |
| break; |
| default: |
| GST_DEBUG_OBJECT (queue, "Can't adjust query in %s format, don't " |
| "know how to adjust value", gst_format_get_name (format)); |
| return TRUE; |
| } |
| /* set updated position */ |
| gst_query_set_position (query, format, peer_pos); |
| break; |
| } |
| case GST_QUERY_LATENCY: |
| { |
| gboolean live; |
| GstClockTime min, max; |
| |
| gst_query_parse_latency (query, &live, &min, &max); |
| |
| /* we can delay up to the limit of the queue in time. If we have no time |
| * limit, the best thing we can do is to return an infinite delay. In |
| * reality a better estimate would be the byte/buffer rate but that is not |
| * possible right now. */ |
| /* TODO: Use CONVERT query? */ |
| if (queue->max_size.time > 0 && max != -1 |
| && queue->leaky == GST_QUEUE_NO_LEAK) |
| max += queue->max_size.time; |
| else if (queue->max_size.time > 0 && queue->leaky != GST_QUEUE_NO_LEAK) |
| max = MIN (queue->max_size.time, max); |
| else |
| max = -1; |
| |
| /* adjust for min-threshold */ |
| if (queue->min_threshold.time > 0) |
| min += queue->min_threshold.time; |
| |
| gst_query_set_latency (query, live, min, max); |
| break; |
| } |
| default: |
| /* peer handled other queries */ |
| break; |
| } |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_queue_sink_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode, |
| gboolean active) |
| { |
| gboolean result; |
| GstQueue *queue; |
| |
| queue = GST_QUEUE (parent); |
| |
| switch (mode) { |
| case GST_PAD_MODE_PUSH: |
| if (active) { |
| GST_QUEUE_MUTEX_LOCK (queue); |
| queue->srcresult = GST_FLOW_OK; |
| queue->eos = FALSE; |
| queue->unexpected = FALSE; |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } else { |
| /* step 1, unblock chain function */ |
| GST_QUEUE_MUTEX_LOCK (queue); |
| queue->srcresult = GST_FLOW_FLUSHING; |
| /* the item del signal will unblock */ |
| GST_QUEUE_SIGNAL_DEL (queue); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| /* step 2, wait until streaming thread stopped and flush queue */ |
| GST_PAD_STREAM_LOCK (pad); |
| GST_QUEUE_MUTEX_LOCK (queue); |
| gst_queue_locked_flush (queue, TRUE); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| GST_PAD_STREAM_UNLOCK (pad); |
| } |
| result = TRUE; |
| break; |
| default: |
| result = FALSE; |
| break; |
| } |
| return result; |
| } |
| |
| static gboolean |
| gst_queue_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode, |
| gboolean active) |
| { |
| gboolean result; |
| GstQueue *queue; |
| |
| queue = GST_QUEUE (parent); |
| |
| switch (mode) { |
| case GST_PAD_MODE_PUSH: |
| if (active) { |
| GST_QUEUE_MUTEX_LOCK (queue); |
| queue->srcresult = GST_FLOW_OK; |
| queue->eos = FALSE; |
| queue->unexpected = FALSE; |
| result = |
| gst_pad_start_task (pad, (GstTaskFunction) gst_queue_loop, pad, |
| NULL); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } else { |
| /* step 1, unblock loop function */ |
| GST_QUEUE_MUTEX_LOCK (queue); |
| queue->srcresult = GST_FLOW_FLUSHING; |
| /* the item add signal will unblock */ |
| g_cond_signal (&queue->item_add); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| |
| /* step 2, make sure streaming finishes */ |
| result = gst_pad_stop_task (pad); |
| |
| GST_QUEUE_MUTEX_LOCK (queue); |
| gst_queue_locked_flush (queue, FALSE); |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } |
| break; |
| default: |
| result = FALSE; |
| break; |
| } |
| return result; |
| } |
| |
| static void |
| queue_capacity_change (GstQueue * queue) |
| { |
| if (queue->leaky == GST_QUEUE_LEAK_DOWNSTREAM) { |
| gst_queue_leak_downstream (queue); |
| } |
| |
| /* changing the capacity of the queue must wake up |
| * the _chain function, it might have more room now |
| * to store the buffer/event in the queue */ |
| GST_QUEUE_SIGNAL_DEL (queue); |
| } |
| |
| /* Changing the minimum required fill level must |
| * wake up the _loop function as it might now |
| * be able to preceed. |
| */ |
| #define QUEUE_THRESHOLD_CHANGE(q)\ |
| GST_QUEUE_SIGNAL_ADD (q); |
| |
| static void |
| gst_queue_set_property (GObject * object, |
| guint prop_id, const GValue * value, GParamSpec * pspec) |
| { |
| GstQueue *queue = GST_QUEUE (object); |
| |
| /* someone could change levels here, and since this |
| * affects the get/put funcs, we need to lock for safety. */ |
| GST_QUEUE_MUTEX_LOCK (queue); |
| |
| switch (prop_id) { |
| case PROP_MAX_SIZE_BYTES: |
| queue->max_size.bytes = g_value_get_uint (value); |
| queue_capacity_change (queue); |
| break; |
| case PROP_MAX_SIZE_BUFFERS: |
| queue->max_size.buffers = g_value_get_uint (value); |
| queue_capacity_change (queue); |
| break; |
| case PROP_MAX_SIZE_TIME: |
| queue->max_size.time = g_value_get_uint64 (value); |
| queue_capacity_change (queue); |
| break; |
| case PROP_MIN_THRESHOLD_BYTES: |
| queue->min_threshold.bytes = g_value_get_uint (value); |
| queue->orig_min_threshold.bytes = queue->min_threshold.bytes; |
| QUEUE_THRESHOLD_CHANGE (queue); |
| break; |
| case PROP_MIN_THRESHOLD_BUFFERS: |
| queue->min_threshold.buffers = g_value_get_uint (value); |
| queue->orig_min_threshold.buffers = queue->min_threshold.buffers; |
| QUEUE_THRESHOLD_CHANGE (queue); |
| break; |
| case PROP_MIN_THRESHOLD_TIME: |
| queue->min_threshold.time = g_value_get_uint64 (value); |
| queue->orig_min_threshold.time = queue->min_threshold.time; |
| QUEUE_THRESHOLD_CHANGE (queue); |
| break; |
| case PROP_LEAKY: |
| queue->leaky = g_value_get_enum (value); |
| break; |
| case PROP_SILENT: |
| queue->silent = g_value_get_boolean (value); |
| break; |
| case PROP_FLUSH_ON_EOS: |
| queue->flush_on_eos = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } |
| |
| static void |
| gst_queue_get_property (GObject * object, |
| guint prop_id, GValue * value, GParamSpec * pspec) |
| { |
| GstQueue *queue = GST_QUEUE (object); |
| |
| GST_QUEUE_MUTEX_LOCK (queue); |
| |
| switch (prop_id) { |
| case PROP_CUR_LEVEL_BYTES: |
| g_value_set_uint (value, queue->cur_level.bytes); |
| break; |
| case PROP_CUR_LEVEL_BUFFERS: |
| g_value_set_uint (value, queue->cur_level.buffers); |
| break; |
| case PROP_CUR_LEVEL_TIME: |
| g_value_set_uint64 (value, queue->cur_level.time); |
| break; |
| case PROP_MAX_SIZE_BYTES: |
| g_value_set_uint (value, queue->max_size.bytes); |
| break; |
| case PROP_MAX_SIZE_BUFFERS: |
| g_value_set_uint (value, queue->max_size.buffers); |
| break; |
| case PROP_MAX_SIZE_TIME: |
| g_value_set_uint64 (value, queue->max_size.time); |
| break; |
| case PROP_MIN_THRESHOLD_BYTES: |
| g_value_set_uint (value, queue->min_threshold.bytes); |
| break; |
| case PROP_MIN_THRESHOLD_BUFFERS: |
| g_value_set_uint (value, queue->min_threshold.buffers); |
| break; |
| case PROP_MIN_THRESHOLD_TIME: |
| g_value_set_uint64 (value, queue->min_threshold.time); |
| break; |
| case PROP_LEAKY: |
| g_value_set_enum (value, queue->leaky); |
| break; |
| case PROP_SILENT: |
| g_value_set_boolean (value, queue->silent); |
| break; |
| case PROP_FLUSH_ON_EOS: |
| g_value_set_boolean (value, queue->flush_on_eos); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| |
| GST_QUEUE_MUTEX_UNLOCK (queue); |
| } |
