+++ /dev/null
-/* GStreamer
- * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
- * 2003 Colin Walters <cwalters@gnome.org>
- * 2000,2005,2007 Wim Taymans <wim.taymans@gmail.com>
- * 2007 Thiago Sousa Santos <thiagoss@lcc.ufcg.edu.br>
- *
- * gstqueue2.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., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/**
- * SECTION:element-queue2
- * @short_description: Asynchronous data queue.
- *
- * Data is queued until one of the limits specified by the
- * #GstQueue2:max-size-buffers, #GstQueue2:max-size-bytes and/or
- * #GstQueue2: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
- * #GstQueue2:current-level-buffers property.
- *
- * The default queue size limits are 100 buffers, 2MB of data, or
- * two seconds worth of data, whichever is reached first.
- *
- * If you set temp-tmpl to a value such as /tmp/gstreamer-XXXXXX, the element
- * will allocate a random free filename and buffer data in the file.
- * By using this, it will buffer the entire stream data on the file independently
- * of the queue size limits, they will only be used for buffering statistics.
- *
- * Since 0.10.24, setting the temp-location property with a filename is deprecated
- * because it's impossible to securely open a temporary file in this way. The
- * property will still be used to notify the application of the allocated
- * filename, though.
- *
- * Last reviewed on 2009-07-10 (0.10.24)
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <glib/gstdio.h>
-
-#include <gst/gst.h>
-#include <gst/gst-i18n-plugin.h>
-
-#ifdef G_OS_WIN32
-#include <io.h> /* lseek, open, close, read */
-#undef lseek
-#define lseek _lseeki64
-#undef off_t
-#define off_t guint64
-#else
-#include <unistd.h>
-#endif
-
-static const GstElementDetails gst_queue_details = GST_ELEMENT_DETAILS ("Queue",
- "Generic",
- "Simple data queue",
- "Erik Walthinsen <omega@cse.ogi.edu>, "
- "Wim Taymans <wim.taymans@gmail.com>");
-
-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);
-
-enum
-{
- LAST_SIGNAL
-};
-
-/* default property values */
-#define DEFAULT_MAX_SIZE_BUFFERS 100 /* 100 buffers */
-#define DEFAULT_MAX_SIZE_BYTES (2 * 1024 * 1024) /* 2 MB */
-#define DEFAULT_MAX_SIZE_TIME 2 * GST_SECOND /* 2 seconds */
-#define DEFAULT_USE_BUFFERING FALSE
-#define DEFAULT_USE_RATE_ESTIMATE TRUE
-#define DEFAULT_LOW_PERCENT 10
-#define DEFAULT_HIGH_PERCENT 99
-
-/* other defines */
-#define DEFAULT_BUFFER_SIZE 4096
-#define QUEUE_IS_USING_TEMP_FILE(queue) ((queue)->temp_location_set || (queue)->temp_template != NULL)
-
-enum
-{
- PROP_0,
- 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_USE_BUFFERING,
- PROP_USE_RATE_ESTIMATE,
- PROP_LOW_PERCENT,
- PROP_HIGH_PERCENT,
- PROP_TEMP_TEMPLATE,
- PROP_TEMP_LOCATION
-};
-
-#define GST_TYPE_QUEUE \
- (gst_queue_get_type())
-#define GST_QUEUE(obj) \
- (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUEUE,GstQueue))
-#define GST_QUEUE_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QUEUE,GstQueueClass))
-#define GST_IS_QUEUE(obj) \
- (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUEUE))
-#define GST_IS_QUEUE_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUEUE))
-#define GST_QUEUE_CAST(obj) \
- ((GstQueue *)(obj))
-
-typedef struct _GstQueue GstQueue;
-typedef struct _GstQueueSize GstQueueSize;
-typedef struct _GstQueueClass GstQueueClass;
-
-/* used to keep track of sizes (current and max) */
-struct _GstQueueSize
-{
- guint buffers;
- guint bytes;
- guint64 time;
- guint64 rate_time;
-};
-
-#define GST_QUEUE_CLEAR_LEVEL(l) G_STMT_START { \
- l.buffers = 0; \
- l.bytes = 0; \
- l.time = 0; \
- l.rate_time = 0; \
-} G_STMT_END
-
-struct _GstQueue
-{
- GstElement element;
-
- /*< private > */
- GstPad *sinkpad;
- GstPad *srcpad;
-
- /* segments to keep track of timestamps */
- GstSegment sink_segment;
- GstSegment src_segment;
-
- /* flowreturn when srcpad is paused */
- GstFlowReturn srcresult;
- gboolean is_eos;
- gboolean unexpected;
-
- /* the queue of data we're keeping our hands on */
- GQueue *queue;
-
- GstQueueSize cur_level; /* currently in the queue */
- GstQueueSize max_level; /* max. amount of data allowed in the queue */
- gboolean use_buffering;
- gboolean use_rate_estimate;
- GstClockTime buffering_interval;
- gint low_percent; /* low/high watermarks for buffering */
- gint high_percent;
-
- /* current buffering state */
- gboolean is_buffering;
- guint buffering_iteration;
-
- /* for measuring input/output rates */
- GTimer *in_timer;
- gboolean in_timer_started;
- gdouble last_in_elapsed;
- guint64 bytes_in;
- gdouble byte_in_rate;
-
- GTimer *out_timer;
- gboolean out_timer_started;
- gdouble last_out_elapsed;
- guint64 bytes_out;
- gdouble byte_out_rate;
-
- GMutex *qlock; /* lock for queue (vs object lock) */
- gboolean waiting_add;
- GCond *item_add; /* signals buffers now available for reading */
- gboolean waiting_del;
- GCond *item_del; /* signals space now available for writing */
-
- /* temp location stuff */
- gchar *temp_template;
- gboolean temp_location_set;
- gchar *temp_location;
- FILE *temp_file;
- guint64 writing_pos;
- guint64 reading_pos;
- guint64 max_reading_pos;
- /* we need this to send the first new segment event of the stream
- * because we can't save it on the file */
- gboolean segment_event_received;
- GstEvent *starting_segment;
-
-};
-
-struct _GstQueueClass
-{
- GstElementClass parent_class;
-};
-
-#define STATUS(queue, pad, msg) \
- GST_CAT_LOG_OBJECT (queue_dataflow, queue, \
- "(%s:%s) " msg ": %u of %u buffers, %u of %u " \
- "bytes, %" G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT \
- " ns, %"G_GUINT64_FORMAT" items", \
- GST_DEBUG_PAD_NAME (pad), \
- queue->cur_level.buffers, \
- queue->max_level.buffers, \
- queue->cur_level.bytes, \
- queue->max_level.bytes, \
- queue->cur_level.time, \
- queue->max_level.time, \
- (guint64) (QUEUE_IS_USING_TEMP_FILE(queue) ? \
- queue->writing_pos - queue->max_reading_pos : \
- queue->queue->length))
-
-#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 (queue, q->sinkpad, "wait for DEL"); \
- q->waiting_del = TRUE; \
- g_cond_wait (q->item_del, queue->qlock); \
- q->waiting_del = FALSE; \
- if (q->srcresult != GST_FLOW_OK) { \
- STATUS (queue, q->srcpad, "received DEL wakeup"); \
- goto label; \
- } \
- STATUS (queue, q->sinkpad, "received DEL"); \
-} G_STMT_END
-
-#define GST_QUEUE_WAIT_ADD_CHECK(q, label) G_STMT_START { \
- STATUS (queue, 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 (queue, q->srcpad, "received ADD wakeup"); \
- goto label; \
- } \
- STATUS (queue, 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(bla) \
-
-/* can't use boilerplate as we need to register with Queue2 to avoid conflicts
- * with queue in core elements */
-static void gst_queue_class_init (GstQueueClass * klass);
-static void gst_queue_init (GstQueue * queue, GstQueueClass * g_class);
-static GstElementClass *parent_class;
-
-static GType
-gst_queue_get_type (void)
-{
- static GType gst_queue_type = 0;
-
- if (!gst_queue_type) {
- static const GTypeInfo gst_queue_info = {
- sizeof (GstQueueClass),
- NULL,
- NULL,
- (GClassInitFunc) gst_queue_class_init,
- NULL,
- NULL,
- sizeof (GstQueue),
- 0,
- (GInstanceInitFunc) gst_queue_init,
- NULL
- };
-
- gst_queue_type =
- g_type_register_static (GST_TYPE_ELEMENT, "GstQueue2",
- &gst_queue_info, 0);
- }
- return gst_queue_type;
-}
-
-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, GstBuffer * buffer);
-static GstFlowReturn gst_queue_bufferalloc (GstPad * pad, guint64 offset,
- guint size, GstCaps * caps, GstBuffer ** buf);
-static GstFlowReturn gst_queue_push_one (GstQueue * queue);
-static void gst_queue_loop (GstPad * pad);
-
-static gboolean gst_queue_handle_sink_event (GstPad * pad, GstEvent * event);
-
-static gboolean gst_queue_handle_src_event (GstPad * pad, GstEvent * event);
-static gboolean gst_queue_handle_src_query (GstPad * pad, GstQuery * query);
-
-static GstCaps *gst_queue_getcaps (GstPad * pad);
-static gboolean gst_queue_acceptcaps (GstPad * pad, GstCaps * caps);
-
-static GstFlowReturn gst_queue_get_range (GstPad * pad, guint64 offset,
- guint length, GstBuffer ** buffer);
-static gboolean gst_queue_src_checkgetrange_function (GstPad * pad);
-
-static gboolean gst_queue_src_activate_pull (GstPad * pad, gboolean active);
-static gboolean gst_queue_src_activate_push (GstPad * pad, gboolean active);
-static gboolean gst_queue_sink_activate_push (GstPad * pad, gboolean active);
-static GstStateChangeReturn gst_queue_change_state (GstElement * element,
- GstStateChange transition);
-
-static gboolean gst_queue_is_empty (GstQueue * queue);
-static gboolean gst_queue_is_filled (GstQueue * queue);
-
-/* 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);
-
- parent_class = g_type_class_peek_parent (klass);
-
- gobject_class->set_property = gst_queue_set_property;
- gobject_class->get_property = gst_queue_get_property;
-
- /* 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 | 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 | 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 | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
- g_param_spec_boolean ("use-buffering", "Use buffering",
- "Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
- DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_USE_RATE_ESTIMATE,
- g_param_spec_boolean ("use-rate-estimate", "Use Rate Estimate",
- "Estimate the bitrate of the stream to calculate time level",
- DEFAULT_USE_RATE_ESTIMATE,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_LOW_PERCENT,
- g_param_spec_int ("low-percent", "Low percent",
- "Low threshold for buffering to start", 0, 100, DEFAULT_LOW_PERCENT,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_HIGH_PERCENT,
- g_param_spec_int ("high-percent", "High percent",
- "High threshold for buffering to finish", 0, 100,
- DEFAULT_HIGH_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_TEMP_TEMPLATE,
- g_param_spec_string ("temp-template", "Temporary File Template",
- "File template to store temporary files in, should contain directory "
- "and XXXXXX. (NULL == disabled)",
- NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_TEMP_LOCATION,
- g_param_spec_string ("temp-location", "Temporary File Location",
- "Location to store temporary files in (Deprecated: Only read this "
- "property, use temp-tmpl to configure the name template)",
- NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&srctemplate));
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&sinktemplate));
-
- gst_element_class_set_details (gstelement_class, &gst_queue_details);
-
- /* set several parent class virtual functions */
- gobject_class->finalize = gst_queue_finalize;
-
- gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_queue_change_state);
-}
-
-static void
-gst_queue_init (GstQueue * queue, GstQueueClass * g_class)
-{
- queue->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
-
- gst_pad_set_chain_function (queue->sinkpad,
- GST_DEBUG_FUNCPTR (gst_queue_chain));
- gst_pad_set_activatepush_function (queue->sinkpad,
- GST_DEBUG_FUNCPTR (gst_queue_sink_activate_push));
- gst_pad_set_event_function (queue->sinkpad,
- GST_DEBUG_FUNCPTR (gst_queue_handle_sink_event));
- gst_pad_set_getcaps_function (queue->sinkpad,
- GST_DEBUG_FUNCPTR (gst_queue_getcaps));
- gst_pad_set_acceptcaps_function (queue->sinkpad,
- GST_DEBUG_FUNCPTR (gst_queue_acceptcaps));
- gst_pad_set_bufferalloc_function (queue->sinkpad,
- GST_DEBUG_FUNCPTR (gst_queue_bufferalloc));
- gst_element_add_pad (GST_ELEMENT (queue), queue->sinkpad);
-
- queue->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
-
- gst_pad_set_activatepull_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_src_activate_pull));
- gst_pad_set_activatepush_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_src_activate_push));
- gst_pad_set_getrange_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_get_range));
- gst_pad_set_checkgetrange_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_src_checkgetrange_function));
- gst_pad_set_getcaps_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_getcaps));
- gst_pad_set_acceptcaps_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_acceptcaps));
- gst_pad_set_event_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_handle_src_event));
- gst_pad_set_query_function (queue->srcpad,
- GST_DEBUG_FUNCPTR (gst_queue_handle_src_query));
- gst_element_add_pad (GST_ELEMENT (queue), queue->srcpad);
-
- /* levels */
- GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
- queue->max_level.buffers = DEFAULT_MAX_SIZE_BUFFERS;
- queue->max_level.bytes = DEFAULT_MAX_SIZE_BYTES;
- queue->max_level.time = DEFAULT_MAX_SIZE_TIME;
- queue->max_level.rate_time = DEFAULT_MAX_SIZE_TIME;
- queue->use_buffering = DEFAULT_USE_BUFFERING;
- queue->use_rate_estimate = DEFAULT_USE_RATE_ESTIMATE;
- queue->low_percent = DEFAULT_LOW_PERCENT;
- queue->high_percent = DEFAULT_HIGH_PERCENT;
-
- gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
- gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
-
- queue->srcresult = GST_FLOW_WRONG_STATE;
- queue->is_eos = FALSE;
- queue->in_timer = g_timer_new ();
- queue->out_timer = g_timer_new ();
-
- queue->qlock = g_mutex_new ();
- queue->waiting_add = FALSE;
- queue->item_add = g_cond_new ();
- queue->waiting_del = FALSE;
- queue->item_del = g_cond_new ();
- queue->queue = g_queue_new ();
-
- /* tempfile related */
- queue->temp_template = NULL;
- queue->temp_location = NULL;
- queue->temp_location_set = 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);
-
- GST_DEBUG_OBJECT (queue, "finalizing queue");
-
- while (!g_queue_is_empty (queue->queue)) {
- GstMiniObject *data = g_queue_pop_head (queue->queue);
-
- gst_mini_object_unref (data);
- }
-
- g_queue_free (queue->queue);
- g_mutex_free (queue->qlock);
- g_cond_free (queue->item_add);
- g_cond_free (queue->item_del);
- g_timer_destroy (queue->in_timer);
- g_timer_destroy (queue->out_timer);
-
- /* temp_file path cleanup */
- g_free (queue->temp_template);
- g_free (queue->temp_location);
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static gboolean
-gst_queue_acceptcaps (GstPad * pad, GstCaps * caps)
-{
- GstQueue *queue;
- GstPad *otherpad;
- gboolean result;
-
- queue = GST_QUEUE (GST_PAD_PARENT (pad));
-
- otherpad = (pad == queue->srcpad ? queue->sinkpad : queue->srcpad);
- result = gst_pad_peer_accept_caps (otherpad, caps);
-
- return result;
-}
-
-static GstCaps *
-gst_queue_getcaps (GstPad * pad)
-{
- GstQueue *queue;
- GstPad *otherpad;
- GstCaps *result;
-
- queue = GST_QUEUE (GST_PAD_PARENT (pad));
-
- otherpad = (pad == queue->srcpad ? queue->sinkpad : queue->srcpad);
- result = gst_pad_peer_get_caps (otherpad);
- if (result == NULL)
- result = gst_caps_new_any ();
-
- return result;
-}
-
-static GstFlowReturn
-gst_queue_bufferalloc (GstPad * pad, guint64 offset, guint size, GstCaps * caps,
- GstBuffer ** buf)
-{
- GstQueue *queue;
- GstFlowReturn result;
-
- queue = GST_QUEUE (GST_PAD_PARENT (pad));
-
- /* Forward to src pad, without setting caps on the src pad */
- result = gst_pad_alloc_buffer (queue->srcpad, offset, size, caps, buf);
-
- return result;
-}
-
-/* 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;
-
- sink_time =
- gst_segment_to_running_time (&queue->sink_segment, GST_FORMAT_TIME,
- queue->sink_segment.last_stop);
-
- src_time = gst_segment_to_running_time (&queue->src_segment, GST_FORMAT_TIME,
- queue->src_segment.last_stop);
-
- GST_DEBUG_OBJECT (queue, "sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT,
- GST_TIME_ARGS (sink_time), GST_TIME_ARGS (src_time));
-
- if (sink_time >= src_time)
- queue->cur_level.time = sink_time - src_time;
- else
- queue->cur_level.time = 0;
-}
-
-/* take a NEWSEGMENT event and apply the values to segment, updating the time
- * level of queue. */
-static void
-apply_segment (GstQueue * queue, GstEvent * event, GstSegment * segment)
-{
- gboolean update;
- GstFormat format;
- gdouble rate, arate;
- gint64 start, stop, time;
-
- gst_event_parse_new_segment_full (event, &update, &rate, &arate,
- &format, &start, &stop, &time);
-
- GST_DEBUG_OBJECT (queue,
- "received NEWSEGMENT update %d, rate %lf, applied rate %lf, "
- "format %d, "
- "%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
- G_GINT64_FORMAT, update, rate, arate, format, start, stop, time);
-
- if (format == GST_FORMAT_BYTES) {
- }
-
- /* now configure the values, we use these to track timestamps on the
- * sinkpad. */
- if (format != GST_FORMAT_TIME) {
- /* non-time format, pretent the current time segment is closed with a
- * 0 start and unknown stop time. */
- update = FALSE;
- format = GST_FORMAT_TIME;
- start = 0;
- stop = -1;
- time = 0;
- }
- gst_segment_set_newsegment_full (segment, update,
- rate, arate, format, start, stop, time);
-
- GST_DEBUG_OBJECT (queue,
- "configured NEWSEGMENT %" GST_SEGMENT_FORMAT, segment);
-
- /* segment can update the time level of the queue */
- 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)
-{
- GstClockTime duration, timestamp;
-
- timestamp = GST_BUFFER_TIMESTAMP (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->last_stop;
-
- /* add duration */
- if (duration != GST_CLOCK_TIME_NONE)
- timestamp += duration;
-
- GST_DEBUG_OBJECT (queue, "last_stop updated to %" GST_TIME_FORMAT,
- GST_TIME_ARGS (timestamp));
-
- gst_segment_set_last_stop (segment, GST_FORMAT_TIME, timestamp);
-
- /* calc diff with other end */
- update_time_level (queue);
-}
-
-static void
-update_buffering (GstQueue * queue)
-{
- gint percent;
- gboolean post = FALSE;
-
- if (!queue->use_buffering || queue->high_percent <= 0)
- return;
-
-#define GET_PERCENT(format) ((queue->max_level.format) > 0 ? \
- (queue->cur_level.format) * 100 / (queue->max_level.format) : 0)
-
- if (queue->is_eos) {
- /* on EOS we are always 100% full, we set the var here so that it we can
- * resue the logic below to stop buffering */
- percent = 100;
- } else {
- /* figure out the percent we are filled, we take the max of all formats. */
- percent = GET_PERCENT (bytes);
- percent = MAX (percent, GET_PERCENT (time));
- percent = MAX (percent, GET_PERCENT (buffers));
-
- /* also apply the rate estimate when we need to */
- if (queue->use_rate_estimate)
- percent = MAX (percent, GET_PERCENT (rate_time));
- }
-
- if (queue->is_buffering) {
- post = TRUE;
- /* if we were buffering see if we reached the high watermark */
- if (percent >= queue->high_percent)
- queue->is_buffering = FALSE;
- } else {
- /* we were not buffering, check if we need to start buffering if we drop
- * below the low threshold */
- if (percent < queue->low_percent) {
- queue->is_buffering = TRUE;
- queue->buffering_iteration++;
- post = TRUE;
- }
- }
- if (post) {
- GstMessage *message;
- GstBufferingMode mode;
-
- /* scale to high percent so that it becomes the 100% mark */
- percent = percent * 100 / queue->high_percent;
- /* clip */
- if (percent > 100)
- percent = 100;
-
- if (QUEUE_IS_USING_TEMP_FILE (queue))
- mode = GST_BUFFERING_DOWNLOAD;
- else
- mode = GST_BUFFERING_STREAM;
-
- GST_DEBUG_OBJECT (queue, "buffering %d percent", percent);
- message = gst_message_new_buffering (GST_OBJECT_CAST (queue), percent);
- gst_message_set_buffering_stats (message, mode,
- queue->byte_in_rate, queue->byte_out_rate, -1);
-
- gst_element_post_message (GST_ELEMENT_CAST (queue), message);
-
- } else {
- GST_DEBUG_OBJECT (queue, "filled %d percent", percent);
- }
-
-#undef GET_PERCENT
-}
-
-static void
-reset_rate_timer (GstQueue * queue)
-{
- queue->bytes_in = 0;
- queue->bytes_out = 0;
- queue->byte_in_rate = 0.0;
- queue->byte_out_rate = 0.0;
- queue->last_in_elapsed = 0.0;
- queue->last_out_elapsed = 0.0;
- queue->in_timer_started = FALSE;
- queue->out_timer_started = FALSE;
-}
-
-/* the interval in seconds to recalculate the rate */
-#define RATE_INTERVAL 0.2
-/* Tuning for rate estimation. We use a large window for the input rate because
- * it should be stable when connected to a network. The output rate is less
- * stable (the elements preroll, queues behind a demuxer fill, ...) and should
- * therefore adapt more quickly. */
-#define AVG_IN(avg,val) ((avg) * 15.0 + (val)) / 16.0
-#define AVG_OUT(avg,val) ((avg) * 3.0 + (val)) / 4.0
-
-static void
-update_in_rates (GstQueue * queue)
-{
- gdouble elapsed, period;
- gdouble byte_in_rate;
-
- if (!queue->in_timer_started) {
- queue->in_timer_started = TRUE;
- g_timer_start (queue->in_timer);
- return;
- }
-
- elapsed = g_timer_elapsed (queue->in_timer, NULL);
-
- /* recalc after each interval. */
- if (queue->last_in_elapsed + RATE_INTERVAL < elapsed) {
- period = elapsed - queue->last_in_elapsed;
-
- GST_DEBUG_OBJECT (queue,
- "rates: period %f, in %" G_GUINT64_FORMAT, period, queue->bytes_in);
-
- byte_in_rate = queue->bytes_in / period;
-
- if (queue->byte_in_rate == 0.0)
- queue->byte_in_rate = byte_in_rate;
- else
- queue->byte_in_rate = AVG_IN (queue->byte_in_rate, byte_in_rate);
-
- /* reset the values to calculate rate over the next interval */
- queue->last_in_elapsed = elapsed;
- queue->bytes_in = 0;
- }
-
- if (queue->byte_in_rate > 0.0) {
- queue->cur_level.rate_time =
- queue->cur_level.bytes / queue->byte_in_rate * GST_SECOND;
- }
- GST_DEBUG_OBJECT (queue, "rates: in %f, time %" GST_TIME_FORMAT,
- queue->byte_in_rate, GST_TIME_ARGS (queue->cur_level.rate_time));
-}
-
-static void
-update_out_rates (GstQueue * queue)
-{
- gdouble elapsed, period;
- gdouble byte_out_rate;
-
- if (!queue->out_timer_started) {
- queue->out_timer_started = TRUE;
- g_timer_start (queue->out_timer);
- return;
- }
-
- elapsed = g_timer_elapsed (queue->out_timer, NULL);
-
- /* recalc after each interval. */
- if (queue->last_out_elapsed + RATE_INTERVAL < elapsed) {
- period = elapsed - queue->last_out_elapsed;
-
- GST_DEBUG_OBJECT (queue,
- "rates: period %f, out %" G_GUINT64_FORMAT, period, queue->bytes_out);
-
- byte_out_rate = queue->bytes_out / period;
-
- if (queue->byte_out_rate == 0.0)
- queue->byte_out_rate = byte_out_rate;
- else
- queue->byte_out_rate = AVG_OUT (queue->byte_out_rate, byte_out_rate);
-
- /* reset the values to calculate rate over the next interval */
- queue->last_out_elapsed = elapsed;
- queue->bytes_out = 0;
- }
- if (queue->byte_in_rate > 0.0) {
- queue->cur_level.rate_time =
- queue->cur_level.bytes / queue->byte_in_rate * GST_SECOND;
- }
- GST_DEBUG_OBJECT (queue, "rates: out %f, time %" GST_TIME_FORMAT,
- queue->byte_out_rate, GST_TIME_ARGS (queue->cur_level.rate_time));
-}
-
-static void
-gst_queue_write_buffer_to_file (GstQueue * queue, GstBuffer * buffer)
-{
- guint size;
- guint8 *data;
- int ret;
-
-#ifdef HAVE_FSEEKO
- fseeko (queue->temp_file, (off_t) queue->writing_pos, SEEK_SET);
-#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
- lseek (fileno (queue->temp_file), (off_t) queue->writing_pos, SEEK_SET);
-#else
- fseek (queue->temp_file, queue->writing_pos, SEEK_SET);
-#endif
-
- data = GST_BUFFER_DATA (buffer);
- size = GST_BUFFER_SIZE (buffer);
-
- ret = fwrite (data, 1, size, queue->temp_file);
- if (ret < size) {
- /* FIXME do something useful here */
- GST_ERROR_OBJECT (queue, "fwrite returned error");
- }
- queue->writing_pos += size;
-
- if (queue->writing_pos > queue->max_reading_pos)
- queue->cur_level.bytes = queue->writing_pos - queue->max_reading_pos;
- else
- queue->cur_level.bytes = 0;
-}
-
-/* see if there is enough data in the file to read a full buffer */
-static gboolean
-gst_queue_have_data (GstQueue * queue, guint64 offset, guint length)
-{
- GST_DEBUG_OBJECT (queue,
- "offset %" G_GUINT64_FORMAT ", len %u, write %" G_GUINT64_FORMAT, offset,
- length, queue->writing_pos);
- if (queue->is_eos)
- return TRUE;
-
- if (offset + length < queue->writing_pos)
- return TRUE;
-
- return FALSE;
-}
-
-static GstFlowReturn
-gst_queue_create_read (GstQueue * queue, guint64 offset, guint length,
- GstBuffer ** buffer)
-{
- size_t res;
- GstBuffer *buf;
-
- /* check if we have enough data at @offset. If there is not enough data, we
- * block and wait. */
- while (!gst_queue_have_data (queue, offset, length)) {
- GST_QUEUE_WAIT_ADD_CHECK (queue, out_flushing);
- }
-
-#ifdef HAVE_FSEEKO
- if (fseeko (queue->temp_file, (off_t) offset, SEEK_SET) != 0)
- goto seek_failed;
-#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
- if (lseek (fileno (queue->temp_file), (off_t) offset,
- SEEK_SET) == (off_t) - 1)
- goto seek_failed;
-#else
- if (fseek (queue->temp_file, (long) offset, SEEK_SET) != 0)
- goto seek_failed;
-#endif
-
- buf = gst_buffer_new_and_alloc (length);
-
- /* this should not block */
- GST_LOG_OBJECT (queue, "Reading %d bytes", length);
- res = fread (GST_BUFFER_DATA (buf), 1, length, queue->temp_file);
- GST_LOG_OBJECT (queue, "read %" G_GSIZE_FORMAT " bytes", res);
-
- if (G_UNLIKELY (res == 0)) {
- /* check for errors or EOF */
- if (ferror (queue->temp_file))
- goto could_not_read;
- if (feof (queue->temp_file) && length > 0)
- goto eos;
- }
-
- length = res;
-
- GST_BUFFER_SIZE (buf) = length;
- GST_BUFFER_OFFSET (buf) = offset;
- GST_BUFFER_OFFSET_END (buf) = offset + length;
-
- *buffer = buf;
-
- queue->reading_pos = offset + length;
- queue->max_reading_pos = MAX (queue->max_reading_pos, queue->reading_pos);
-
- if (queue->writing_pos > queue->max_reading_pos)
- queue->cur_level.bytes = queue->writing_pos - queue->max_reading_pos;
- else
- queue->cur_level.bytes = 0;
-
- return GST_FLOW_OK;
-
- /* ERRORS */
-out_flushing:
- {
- GST_DEBUG_OBJECT (queue, "we are flushing");
- return GST_FLOW_WRONG_STATE;
- }
-seek_failed:
- {
- GST_ELEMENT_ERROR (queue, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
- return GST_FLOW_ERROR;
- }
-could_not_read:
- {
- GST_ELEMENT_ERROR (queue, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
- gst_buffer_unref (buf);
- return GST_FLOW_ERROR;
- }
-eos:
- {
- GST_DEBUG ("non-regular file hits EOS");
- gst_buffer_unref (buf);
- return GST_FLOW_UNEXPECTED;
- }
-}
-
-/* should be called with QUEUE_LOCK */
-static GstMiniObject *
-gst_queue_read_item_from_file (GstQueue * queue)
-{
- GstMiniObject *item;
-
- if (queue->starting_segment != NULL) {
- item = GST_MINI_OBJECT_CAST (queue->starting_segment);
- queue->starting_segment = NULL;
- } else {
- GstFlowReturn ret;
- GstBuffer *buffer;
-
- ret =
- gst_queue_create_read (queue, queue->reading_pos, DEFAULT_BUFFER_SIZE,
- &buffer);
- switch (ret) {
- case GST_FLOW_OK:
- item = GST_MINI_OBJECT_CAST (buffer);
- break;
- case GST_FLOW_UNEXPECTED:
- item = GST_MINI_OBJECT_CAST (gst_event_new_eos ());
- break;
- default:
- item = NULL;
- break;
- }
- }
- return item;
-}
-
-static gboolean
-gst_queue_open_temp_location_file (GstQueue * queue)
-{
- gint fd = -1;
- gchar *name = NULL;
-
- GST_DEBUG_OBJECT (queue, "opening temp file %s", queue->temp_template);
-
- /* we have two cases:
- * - temp_location was set to something !NULL (Deprecated). in this case we
- * open the specified filename.
- * - temp_template was set, allocate a filename and open that filename
- */
- if (!queue->temp_location_set) {
- /* nothing to do */
- if (queue->temp_template == NULL)
- goto no_directory;
-
- /* make copy of the template, we don't want to change this */
- name = g_strdup (queue->temp_template);
- fd = g_mkstemp (name);
- if (fd == -1)
- goto mkstemp_failed;
-
- /* open the file for update/writing */
- queue->temp_file = fdopen (fd, "wb+");
- /* error creating file */
- if (queue->temp_file == NULL)
- goto open_failed;
-
- g_free (queue->temp_location);
- queue->temp_location = name;
-
- g_object_notify (G_OBJECT (queue), "temp-location");
- } else {
- /* open the file for update/writing, this is deprecated but we still need to
- * support it for API/ABI compatibility */
- queue->temp_file = g_fopen (queue->temp_location, "wb+");
- /* error creating file */
- if (queue->temp_file == NULL)
- goto open_failed;
- }
-
- queue->writing_pos = 0;
- queue->reading_pos = 0;
- queue->max_reading_pos = 0;
-
- return TRUE;
-
- /* ERRORS */
-no_directory:
- {
- GST_ELEMENT_ERROR (queue, RESOURCE, NOT_FOUND,
- (_("No Temp directory specified.")), (NULL));
- return FALSE;
- }
-mkstemp_failed:
- {
- GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
- (_("Could not create temp file \"%s\"."), queue->temp_template),
- GST_ERROR_SYSTEM);
- g_free (name);
- return FALSE;
- }
-open_failed:
- {
- GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
- (_("Could not open file \"%s\" for reading."), name), GST_ERROR_SYSTEM);
- g_free (name);
- if (fd != -1)
- close (fd);
- return FALSE;
- }
-}
-
-static void
-gst_queue_close_temp_location_file (GstQueue * queue)
-{
- /* nothing to do */
- if (queue->temp_file == NULL)
- return;
-
- GST_DEBUG_OBJECT (queue, "closing temp file");
-
- /* we don't remove the file so that the application can use it as a cache
- * later on */
- fflush (queue->temp_file);
- fclose (queue->temp_file);
- remove (queue->temp_location);
- queue->temp_file = NULL;
-}
-
-static void
-gst_queue_flush_temp_file (GstQueue * queue)
-{
- if (queue->temp_file == NULL)
- return;
-
- GST_DEBUG_OBJECT (queue, "flushing temp file");
-
- queue->temp_file = g_freopen (queue->temp_location, "wb+", queue->temp_file);
-
- queue->writing_pos = 0;
- queue->reading_pos = 0;
- queue->max_reading_pos = 0;
-}
-
-static void
-gst_queue_locked_flush (GstQueue * queue)
-{
- if (QUEUE_IS_USING_TEMP_FILE (queue)) {
- gst_queue_flush_temp_file (queue);
- } else {
- while (!g_queue_is_empty (queue->queue)) {
- GstMiniObject *data = g_queue_pop_head (queue->queue);
-
- /* Then lose another reference because we are supposed to destroy that
- data when flushing */
- gst_mini_object_unref (data);
- }
- }
- GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
- gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
- gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
- if (queue->starting_segment != NULL)
- gst_event_unref (queue->starting_segment);
- queue->starting_segment = NULL;
- queue->segment_event_received = FALSE;
-
- /* we deleted a lot of something */
- GST_QUEUE_SIGNAL_DEL (queue);
-}
-
-/* enqueue an item an update the level stats */
-static void
-gst_queue_locked_enqueue (GstQueue * queue, gpointer item)
-{
- if (GST_IS_BUFFER (item)) {
- GstBuffer *buffer;
- guint size;
-
- buffer = GST_BUFFER_CAST (item);
- size = GST_BUFFER_SIZE (buffer);
-
- /* add buffer to the statistics */
- queue->cur_level.buffers++;
- queue->cur_level.bytes += size;
- queue->bytes_in += size;
-
- /* apply new buffer to segment stats */
- apply_buffer (queue, buffer, &queue->sink_segment);
- /* update the byterate stats */
- update_in_rates (queue);
-
- if (QUEUE_IS_USING_TEMP_FILE (queue)) {
- gst_queue_write_buffer_to_file (queue, buffer);
- }
-
- } else if (GST_IS_EVENT (item)) {
- GstEvent *event;
-
- event = GST_EVENT_CAST (item);
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_EOS:
- /* Zero the thresholds, this makes sure the queue is completely
- * filled and we can read all data from the queue. */
- queue->is_eos = TRUE;
- break;
- case GST_EVENT_NEWSEGMENT:
- apply_segment (queue, event, &queue->sink_segment);
- /* This is our first new segment, we hold it
- * as we can't save it on the temp file */
- if (QUEUE_IS_USING_TEMP_FILE (queue)) {
- if (queue->segment_event_received)
- goto unexpected_event;
-
- queue->segment_event_received = TRUE;
- if (queue->starting_segment != NULL)
- gst_event_unref (queue->starting_segment);
- queue->starting_segment = event;
- item = NULL;
- }
- /* a new segment allows us to accept more buffers if we got UNEXPECTED
- * from downstream */
- queue->unexpected = FALSE;
- break;
- default:
- if (QUEUE_IS_USING_TEMP_FILE (queue))
- goto unexpected_event;
- break;
- }
- } else {
- g_warning ("Unexpected item %p added in queue %s (refcounting problem?)",
- item, GST_OBJECT_NAME (queue));
- /* we can't really unref since we don't know what it is */
- item = NULL;
- }
-
- if (item) {
- /* update the buffering status */
- update_buffering (queue);
-
- if (!QUEUE_IS_USING_TEMP_FILE (queue))
- g_queue_push_tail (queue->queue, item);
- else
- gst_mini_object_unref (GST_MINI_OBJECT_CAST (item));
-
- GST_QUEUE_SIGNAL_ADD (queue);
- }
-
- return;
-
- /* ERRORS */
-unexpected_event:
- {
- g_warning
- ("Unexpected event of kind %s can't be added in temp file of queue %s ",
- gst_event_type_get_name (GST_EVENT_TYPE (item)),
- GST_OBJECT_NAME (queue));
- gst_event_unref (GST_EVENT_CAST (item));
- return;
- }
-}
-
-/* dequeue an item from the queue and update level stats */
-static GstMiniObject *
-gst_queue_locked_dequeue (GstQueue * queue)
-{
- GstMiniObject *item;
-
- if (QUEUE_IS_USING_TEMP_FILE (queue))
- item = gst_queue_read_item_from_file (queue);
- else
- item = g_queue_pop_head (queue->queue);
-
- if (item == NULL)
- goto no_item;
-
- if (GST_IS_BUFFER (item)) {
- GstBuffer *buffer;
- guint size;
-
- buffer = GST_BUFFER_CAST (item);
- size = GST_BUFFER_SIZE (buffer);
-
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "retrieved buffer %p from queue", buffer);
-
- queue->cur_level.buffers--;
- queue->cur_level.bytes -= size;
- queue->bytes_out += size;
- apply_buffer (queue, buffer, &queue->src_segment);
- /* update the byterate stats */
- update_out_rates (queue);
- /* update the buffering */
- update_buffering (queue);
-
- } 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_NEWSEGMENT:
- apply_segment (queue, event, &queue->src_segment);
- break;
- default:
- break;
- }
- } 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_LOG_OBJECT (queue_dataflow, queue, "the queue is empty");
- return NULL;
- }
-}
-
-static gboolean
-gst_queue_handle_sink_event (GstPad * pad, GstEvent * event)
-{
- GstQueue *queue;
-
- queue = GST_QUEUE (GST_OBJECT_PARENT (pad));
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_FLUSH_START:
- {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush start event");
- /* forward event */
- gst_pad_push_event (queue->srcpad, event);
-
- /* now unblock the chain function */
- GST_QUEUE_MUTEX_LOCK (queue);
- queue->srcresult = GST_FLOW_WRONG_STATE;
- /* unblock the loop and chain functions */
- g_cond_signal (queue->item_add);
- g_cond_signal (queue->item_del);
- 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");
- goto done;
- }
- case GST_EVENT_FLUSH_STOP:
- {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush stop event");
- /* forward event */
- gst_pad_push_event (queue->srcpad, event);
-
- GST_QUEUE_MUTEX_LOCK (queue);
- gst_queue_locked_flush (queue);
- queue->srcresult = GST_FLOW_OK;
- queue->is_eos = FALSE;
- queue->unexpected = FALSE;
- /* reset rate counters */
- reset_rate_timer (queue);
- gst_pad_start_task (queue->srcpad, (GstTaskFunction) gst_queue_loop,
- queue->srcpad);
- GST_QUEUE_MUTEX_UNLOCK (queue);
- goto done;
- }
- default:
- if (GST_EVENT_IS_SERIALIZED (event)) {
- /* serialized events go in the queue */
- GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
- /* refuse more events on EOS */
- if (queue->is_eos)
- goto out_eos;
- gst_queue_locked_enqueue (queue, event);
- GST_QUEUE_MUTEX_UNLOCK (queue);
- } else {
- /* non-serialized events are passed upstream. */
- gst_pad_push_event (queue->srcpad, event);
- }
- break;
- }
-done:
- return TRUE;
-
- /* ERRORS */
-out_flushing:
- {
- GST_DEBUG_OBJECT (queue, "refusing event, we are flushing");
- GST_QUEUE_MUTEX_UNLOCK (queue);
- gst_event_unref (event);
- return FALSE;
- }
-out_eos:
- {
- GST_DEBUG_OBJECT (queue, "refusing event, we are EOS");
- GST_QUEUE_MUTEX_UNLOCK (queue);
- gst_event_unref (event);
- return FALSE;
- }
-}
-
-static gboolean
-gst_queue_is_empty (GstQueue * queue)
-{
- /* never empty on EOS */
- if (queue->is_eos)
- return FALSE;
-
- if (QUEUE_IS_USING_TEMP_FILE (queue)) {
- return queue->writing_pos == queue->max_reading_pos;
- } else {
- if (queue->queue->length == 0)
- return TRUE;
- }
-
- return FALSE;
-}
-
-static gboolean
-gst_queue_is_filled (GstQueue * queue)
-{
- gboolean res;
-
- /* always filled on EOS */
- if (queue->is_eos)
- return TRUE;
-
- /* if using file, we're never filled if we don't have EOS */
- if (QUEUE_IS_USING_TEMP_FILE (queue))
- return FALSE;
-
- /* we are never filled when we have no buffers at all */
- if (queue->cur_level.buffers == 0)
- return FALSE;
-
-#define CHECK_FILLED(format) ((queue->max_level.format) > 0 && \
- (queue->cur_level.format) >= (queue->max_level.format))
-
- /* we are filled if one of the current levels exceeds the max */
- res = CHECK_FILLED (buffers) || CHECK_FILLED (bytes) || CHECK_FILLED (time);
-
- /* if we need to, use the rate estimate to check against the max time we are
- * allowed to queue */
- if (queue->use_rate_estimate)
- res |= CHECK_FILLED (rate_time);
-
-#undef CHECK_FILLED
- return res;
-}
-
-static GstFlowReturn
-gst_queue_chain (GstPad * pad, GstBuffer * buffer)
-{
- GstQueue *queue;
-
- queue = GST_QUEUE (GST_OBJECT_PARENT (pad));
-
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "received buffer %p of size %d, time %" GST_TIME_FORMAT ", duration %"
- GST_TIME_FORMAT, buffer, GST_BUFFER_SIZE (buffer),
- GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
- GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
-
- /* we have to lock the queue since we span threads */
- GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
- /* when we received EOS, we refuse more data */
- if (queue->is_eos)
- goto out_eos;
- /* when we received unexpected from downstream, refuse more buffers */
- if (queue->unexpected)
- goto out_unexpected;
-
- /* We make space available if we're "full" according to whatever
- * the user defined as "full". */
- if (gst_queue_is_filled (queue)) {
- gboolean started;
-
- /* pause the timer while we wait. The fact that we are waiting does not mean
- * the byterate on the input pad is lower */
- if ((started = queue->in_timer_started))
- g_timer_stop (queue->in_timer);
-
- GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
- "queue is full, waiting for free space");
- do {
- /* Wait for space to be available, we could be unlocked because of a flush. */
- GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing);
- }
- while (gst_queue_is_filled (queue));
-
- /* and continue if we were running before */
- if (started)
- g_timer_continue (queue->in_timer);
- }
-
- /* put buffer in queue now */
- gst_queue_locked_enqueue (queue, buffer);
- GST_QUEUE_MUTEX_UNLOCK (queue);
-
- return GST_FLOW_OK;
-
- /* special conditions */
-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_buffer_unref (buffer);
-
- return ret;
- }
-out_eos:
- {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
- GST_QUEUE_MUTEX_UNLOCK (queue);
- gst_buffer_unref (buffer);
-
- return GST_FLOW_UNEXPECTED;
- }
-out_unexpected:
- {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "exit because we received UNEXPECTED");
- GST_QUEUE_MUTEX_UNLOCK (queue);
- gst_buffer_unref (buffer);
-
- return GST_FLOW_UNEXPECTED;
- }
-}
-
-/* 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 = GST_FLOW_OK;
- GstMiniObject *data;
-
- data = gst_queue_locked_dequeue (queue);
- if (data == NULL)
- goto no_item;
-
-next:
- if (GST_IS_BUFFER (data)) {
- GstBuffer *buffer;
- GstCaps *caps;
-
- buffer = GST_BUFFER_CAST (data);
- caps = GST_BUFFER_CAPS (buffer);
-
- GST_QUEUE_MUTEX_UNLOCK (queue);
-
- /* set caps before pushing the buffer so that core does not try to do
- * something fancy to check if this is possible. */
- if (caps && caps != GST_PAD_CAPS (queue->srcpad))
- gst_pad_set_caps (queue->srcpad, caps);
-
- result = gst_pad_push (queue->srcpad, buffer);
-
- /* need to check for srcresult here as well */
- GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
- if (result == GST_FLOW_UNEXPECTED) {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "got UNEXPECTED from downstream");
- /* stop pushing buffers, we dequeue all items until we see an item that we
- * can push again, which is EOS or NEWSEGMENT. If there is nothing in the
- * queue we can push, we set a flag to make the sinkpad refuse more
- * buffers with an UNEXPECTED return value until we receive something
- * pushable again or we get flushed. */
- while ((data = gst_queue_locked_dequeue (queue))) {
- if (GST_IS_BUFFER (data)) {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "dropping UNEXPECTED buffer %p", data);
- gst_buffer_unref (GST_BUFFER_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_NEWSEGMENT) {
- /* we found a pushable item in the queue, push it out */
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "pushing pushable event %s after UNEXPECTED",
- GST_EVENT_TYPE_NAME (event));
- goto next;
- }
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "dropping UNEXPECTED event %p", event);
- gst_event_unref (event);
- }
- }
- /* 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 NEWSEGMENT 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 UNEXPECTED so that the task pauses. */
- if (type == GST_EVENT_EOS) {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "pushed EOS event %p, return UNEXPECTED", event);
- result = GST_FLOW_UNEXPECTED;
- }
- }
- return result;
-
- /* ERRORS */
-no_item:
- {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue,
- "exit because we have no item in the queue");
- return GST_FLOW_ERROR;
- }
-out_flushing:
- {
- GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are flushing");
- return GST_FLOW_WRONG_STATE;
- }
-}
-
-/* called repeadedly with @pad as the source pad. This function should push out
- * data to the peer element. */
-static void
-gst_queue_loop (GstPad * pad)
-{
- GstQueue *queue;
- GstFlowReturn ret;
-
- queue = GST_QUEUE (GST_PAD_PARENT (pad));
-
- /* have to lock for thread-safety */
- GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
-
- if (gst_queue_is_empty (queue)) {
- gboolean started;
-
- /* pause the timer while we wait. The fact that we are waiting does not mean
- * the byterate on the output pad is lower */
- if ((started = queue->out_timer_started))
- g_timer_stop (queue->out_timer);
-
- GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
- "queue is empty, waiting for new data");
- do {
- /* Wait for data to be available, we could be unlocked because of a flush. */
- GST_QUEUE_WAIT_ADD_CHECK (queue, out_flushing);
- }
- while (gst_queue_is_empty (queue));
-
- /* and continue if we were running before */
- if (started)
- g_timer_continue (queue->out_timer);
- }
- 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->is_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 (queue->srcresult));
- GST_QUEUE_MUTEX_UNLOCK (queue);
- /* let app know about us giving up if upstream is not expected to do so */
- /* UNEXPECTED is already taken care of elsewhere */
- if (eos && (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) &&
- (ret != GST_FLOW_UNEXPECTED)) {
- GST_ELEMENT_ERROR (queue, STREAM, FAILED,
- (_("Internal data flow error.")),
- ("streaming task paused, reason %s (%d)",
- gst_flow_get_name (ret), ret));
- gst_pad_push_event (queue->srcpad, gst_event_new_eos ());
- }
- return;
- }
-}
-
-static gboolean
-gst_queue_handle_src_event (GstPad * pad, GstEvent * event)
-{
- gboolean res = TRUE;
- GstQueue *queue = GST_QUEUE (GST_PAD_PARENT (pad));
-
-#ifndef GST_DISABLE_GST_DEBUG
- GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%s)",
- event, GST_EVENT_TYPE_NAME (event));
-#endif
-
- if (!QUEUE_IS_USING_TEMP_FILE (queue)) {
- /* just forward upstream */
- res = gst_pad_push_event (queue->sinkpad, event);
- } else {
- /* when using a temp file, we unblock the pending read */
- res = TRUE;
- gst_event_unref (event);
- }
-
- return res;
-}
-
-static gboolean
-gst_queue_peer_query (GstQueue * queue, GstPad * pad, GstQuery * query)
-{
- gboolean ret = FALSE;
- GstPad *peer;
-
- if ((peer = gst_pad_get_peer (pad))) {
- ret = gst_pad_query (peer, query);
- gst_object_unref (peer);
- }
- return ret;
-}
-
-static gboolean
-gst_queue_handle_src_query (GstPad * pad, GstQuery * query)
-{
- GstQueue *queue;
-
- queue = GST_QUEUE (GST_PAD_PARENT (pad));
-
- switch (GST_QUERY_TYPE (query)) {
- case GST_QUERY_POSITION:
- {
- gint64 peer_pos;
- GstFormat format;
-
- if (!gst_queue_peer_query (queue, queue->sinkpad, query))
- goto peer_failed;
-
- /* 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;
- break;
- case GST_FORMAT_TIME:
- peer_pos -= queue->cur_level.time;
- break;
- default:
- GST_WARNING_OBJECT (queue, "dropping query in %s format, don't "
- "know how to adjust value", gst_format_get_name (format));
- return FALSE;
- }
- /* set updated position */
- gst_query_set_position (query, format, peer_pos);
- break;
- }
- case GST_QUERY_DURATION:
- {
- GST_DEBUG_OBJECT (queue, "doing peer query");
-
- if (!gst_queue_peer_query (queue, queue->sinkpad, query))
- goto peer_failed;
-
- GST_DEBUG_OBJECT (queue, "peer query success");
- break;
- }
- case GST_QUERY_BUFFERING:
- {
- GstFormat format;
-
- GST_DEBUG_OBJECT (queue, "query buffering");
-
- if (!QUEUE_IS_USING_TEMP_FILE (queue)) {
- /* no temp file, just forward to the peer */
- if (!gst_queue_peer_query (queue, queue->sinkpad, query))
- goto peer_failed;
- GST_DEBUG_OBJECT (queue, "buffering forwarded to peer");
- } else {
- gint64 start, stop;
-
- gst_query_parse_buffering_range (query, &format, NULL, NULL, NULL);
-
- switch (format) {
- case GST_FORMAT_PERCENT:
- {
- gint64 duration;
- GstFormat peer_fmt;
-
- peer_fmt = GST_FORMAT_BYTES;
-
- if (!gst_pad_query_peer_duration (queue->sinkpad, &peer_fmt,
- &duration))
- goto peer_failed;
-
- GST_DEBUG_OBJECT (queue, "duration %" G_GINT64_FORMAT ", writing %"
- G_GINT64_FORMAT, duration, queue->writing_pos);
-
- start = 0;
- /* get our available data relative to the duration */
- if (duration != -1)
- stop = GST_FORMAT_PERCENT_MAX * queue->writing_pos / duration;
- else
- stop = -1;
- break;
- }
- case GST_FORMAT_BYTES:
- start = 0;
- stop = queue->writing_pos;
- break;
- default:
- start = -1;
- stop = -1;
- break;
- }
- gst_query_set_buffering_percent (query, queue->is_buffering, 100);
- gst_query_set_buffering_range (query, format, start, stop, -1);
- }
- break;
- }
- default:
- /* peer handled other queries */
- if (!gst_queue_peer_query (queue, queue->sinkpad, query))
- goto peer_failed;
- break;
- }
-
- return TRUE;
-
- /* ERRORS */
-peer_failed:
- {
- GST_DEBUG_OBJECT (queue, "failed peer query");
- return FALSE;
- }
-}
-
-static GstFlowReturn
-gst_queue_get_range (GstPad * pad, guint64 offset, guint length,
- GstBuffer ** buffer)
-{
- GstQueue *queue;
- GstFlowReturn ret;
-
- queue = GST_QUEUE_CAST (gst_pad_get_parent (pad));
-
- GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
- length = (length == -1) ? DEFAULT_BUFFER_SIZE : length;
- offset = (offset == -1) ? queue->reading_pos : offset;
-
- /* function will block when the range is not yet available */
- ret = gst_queue_create_read (queue, offset, length, buffer);
- GST_QUEUE_MUTEX_UNLOCK (queue);
-
- gst_object_unref (queue);
-
- return ret;
-
- /* ERRORS */
-out_flushing:
- {
- GST_DEBUG_OBJECT (queue, "we are flushing");
- GST_QUEUE_MUTEX_UNLOCK (queue);
- return GST_FLOW_WRONG_STATE;
- }
-}
-
-static gboolean
-gst_queue_src_checkgetrange_function (GstPad * pad)
-{
- GstQueue *queue;
- gboolean ret;
-
- queue = GST_QUEUE (gst_pad_get_parent (pad));
-
- /* we can operate in pull mode when we are using a tempfile */
- ret = QUEUE_IS_USING_TEMP_FILE (queue);
-
- gst_object_unref (GST_OBJECT (queue));
-
- return ret;
-}
-
-/* sink currently only operates in push mode */
-static gboolean
-gst_queue_sink_activate_push (GstPad * pad, gboolean active)
-{
- gboolean result = TRUE;
- GstQueue *queue;
-
- queue = GST_QUEUE (gst_pad_get_parent (pad));
-
- if (active) {
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "activating push mode");
- queue->srcresult = GST_FLOW_OK;
- queue->is_eos = FALSE;
- queue->unexpected = FALSE;
- reset_rate_timer (queue);
- GST_QUEUE_MUTEX_UNLOCK (queue);
- } else {
- /* unblock chain function */
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "deactivating push mode");
- queue->srcresult = GST_FLOW_WRONG_STATE;
- gst_queue_locked_flush (queue);
- GST_QUEUE_MUTEX_UNLOCK (queue);
- }
-
- gst_object_unref (queue);
-
- return result;
-}
-
-/* src operating in push mode, we start a task on the source pad that pushes out
- * buffers from the queue */
-static gboolean
-gst_queue_src_activate_push (GstPad * pad, gboolean active)
-{
- gboolean result = FALSE;
- GstQueue *queue;
-
- queue = GST_QUEUE (gst_pad_get_parent (pad));
-
- if (active) {
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "activating push mode");
- queue->srcresult = GST_FLOW_OK;
- queue->is_eos = FALSE;
- queue->unexpected = FALSE;
- result = gst_pad_start_task (pad, (GstTaskFunction) gst_queue_loop, pad);
- GST_QUEUE_MUTEX_UNLOCK (queue);
- } else {
- /* unblock loop function */
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "deactivating push mode");
- queue->srcresult = GST_FLOW_WRONG_STATE;
- /* 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_object_unref (queue);
-
- return result;
-}
-
-/* pull mode, downstream will call our getrange function */
-static gboolean
-gst_queue_src_activate_pull (GstPad * pad, gboolean active)
-{
- gboolean result;
- GstQueue *queue;
-
- queue = GST_QUEUE (gst_pad_get_parent (pad));
-
- if (active) {
- if (QUEUE_IS_USING_TEMP_FILE (queue)) {
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "activating pull mode");
- queue->srcresult = GST_FLOW_OK;
- queue->is_eos = FALSE;
- queue->unexpected = FALSE;
- result = TRUE;
- GST_QUEUE_MUTEX_UNLOCK (queue);
- } else {
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "no temp file, cannot activate pull mode");
- /* this is not allowed, we cannot operate in pull mode without a temp
- * file. */
- queue->srcresult = GST_FLOW_WRONG_STATE;
- result = FALSE;
- GST_QUEUE_MUTEX_UNLOCK (queue);
- }
- } else {
- GST_QUEUE_MUTEX_LOCK (queue);
- GST_DEBUG_OBJECT (queue, "deactivating pull mode");
- queue->srcresult = GST_FLOW_WRONG_STATE;
- /* this will unlock getrange */
- g_cond_signal (queue->item_add);
- result = TRUE;
- GST_QUEUE_MUTEX_UNLOCK (queue);
- }
- gst_object_unref (queue);
-
- return result;
-}
-
-static GstStateChangeReturn
-gst_queue_change_state (GstElement * element, GstStateChange transition)
-{
- GstQueue *queue;
- GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
-
- queue = GST_QUEUE (element);
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- if (QUEUE_IS_USING_TEMP_FILE (queue)) {
- if (!gst_queue_open_temp_location_file (queue))
- ret = GST_STATE_CHANGE_FAILURE;
- }
- queue->segment_event_received = FALSE;
- queue->starting_segment = NULL;
- break;
- case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- switch (transition) {
- case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- if (QUEUE_IS_USING_TEMP_FILE (queue))
- gst_queue_close_temp_location_file (queue);
- if (queue->starting_segment != NULL) {
- gst_event_unref (queue->starting_segment);
- queue->starting_segment = NULL;
- }
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- break;
- default:
- break;
- }
-
- return ret;
-}
-
-/* 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 */
-#define QUEUE_CAPACITY_CHANGE(q)\
- g_cond_signal (queue->item_del);
-
-/* 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)\
- g_cond_signal (queue->item_add);
-
-static void
-gst_queue_set_temp_template (GstQueue * queue, const gchar * template)
-{
- GstState state;
-
- /* the element must be stopped in order to do this */
- GST_OBJECT_LOCK (queue);
- state = GST_STATE (queue);
- if (state != GST_STATE_READY && state != GST_STATE_NULL)
- goto wrong_state;
- GST_OBJECT_UNLOCK (queue);
-
- /* set new location */
- g_free (queue->temp_template);
- queue->temp_template = g_strdup (template);
-
- return;
-
-/* ERROR */
-wrong_state:
- {
- GST_WARNING_OBJECT (queue, "setting temp-template property in wrong state");
- GST_OBJECT_UNLOCK (queue);
- }
-}
-
-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_level.bytes = g_value_get_uint (value);
- QUEUE_CAPACITY_CHANGE (queue);
- break;
- case PROP_MAX_SIZE_BUFFERS:
- queue->max_level.buffers = g_value_get_uint (value);
- QUEUE_CAPACITY_CHANGE (queue);
- break;
- case PROP_MAX_SIZE_TIME:
- queue->max_level.time = g_value_get_uint64 (value);
- /* set rate_time to the same value. We use an extra field in the level
- * structure so that we can easily access and compare it */
- queue->max_level.rate_time = queue->max_level.time;
- QUEUE_CAPACITY_CHANGE (queue);
- break;
- case PROP_USE_BUFFERING:
- queue->use_buffering = g_value_get_boolean (value);
- break;
- case PROP_USE_RATE_ESTIMATE:
- queue->use_rate_estimate = g_value_get_boolean (value);
- break;
- case PROP_LOW_PERCENT:
- queue->low_percent = g_value_get_int (value);
- break;
- case PROP_HIGH_PERCENT:
- queue->high_percent = g_value_get_int (value);
- break;
- case PROP_TEMP_TEMPLATE:
- gst_queue_set_temp_template (queue, g_value_get_string (value));
- break;
- case PROP_TEMP_LOCATION:
- g_free (queue->temp_location);
- queue->temp_location = g_value_dup_string (value);
- /* you can set the property back to NULL to make it use the temp-tmpl
- * property. */
- queue->temp_location_set = queue->temp_location != NULL;
- 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_level.bytes);
- break;
- case PROP_MAX_SIZE_BUFFERS:
- g_value_set_uint (value, queue->max_level.buffers);
- break;
- case PROP_MAX_SIZE_TIME:
- g_value_set_uint64 (value, queue->max_level.time);
- break;
- case PROP_USE_BUFFERING:
- g_value_set_boolean (value, queue->use_buffering);
- break;
- case PROP_USE_RATE_ESTIMATE:
- g_value_set_boolean (value, queue->use_rate_estimate);
- break;
- case PROP_LOW_PERCENT:
- g_value_set_int (value, queue->low_percent);
- break;
- case PROP_HIGH_PERCENT:
- g_value_set_int (value, queue->high_percent);
- break;
- case PROP_TEMP_TEMPLATE:
- g_value_set_string (value, queue->temp_template);
- break;
- case PROP_TEMP_LOCATION:
- g_value_set_string (value, queue->temp_location);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-
- GST_QUEUE_MUTEX_UNLOCK (queue);
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- GST_DEBUG_CATEGORY_INIT (queue_debug, "queue2", 0, "queue element");
- GST_DEBUG_CATEGORY_INIT (queue_dataflow, "queue2_dataflow", 0,
- "dataflow inside the queue element");
-
-#ifdef ENABLE_NLS
- GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
- LOCALEDIR);
- bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
- bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
-#endif /* ENABLE_NLS */
-
- return gst_element_register (plugin, "queue2", GST_RANK_NONE, GST_TYPE_QUEUE);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "queue2",
- "Queue newer version", plugin_init, VERSION, GST_LICENSE,
- GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
projects / platform / upstream / gst-plugins-base.git / commitdiff