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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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3273 lines
101 KiB
C
3273 lines
101 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2003 Colin Walters <cwalters@gnome.org>
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* 2000,2005,2007 Wim Taymans <wim.taymans@gmail.com>
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* 2007 Thiago Sousa Santos <thiagoss@lcc.ufcg.edu.br>
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* SA 2010 ST-Ericsson <benjamin.gaignard@stericsson.com>
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*
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* gstqueue2.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-queue2
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*
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* Data is queued until one of the limits specified by the
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* #GstQueue2:max-size-buffers, #GstQueue2:max-size-bytes and/or
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* #GstQueue2:max-size-time properties has been reached. Any attempt to push
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* more buffers into the queue will block the pushing thread until more space
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* becomes available.
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*
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* The queue will create a new thread on the source pad to decouple the
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* processing on sink and source pad.
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*
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* You can query how many buffers are queued by reading the
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* #GstQueue2:current-level-buffers property.
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*
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* The default queue size limits are 100 buffers, 2MB of data, or
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* two seconds worth of data, whichever is reached first.
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*
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* If you set temp-tmpl to a value such as /tmp/gstreamer-XXXXXX, the element
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* will allocate a random free filename and buffer data in the file.
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* By using this, it will buffer the entire stream data on the file independently
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* of the queue size limits, they will only be used for buffering statistics.
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*
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* Since 0.10.24, setting the temp-location property with a filename is deprecated
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* because it's impossible to securely open a temporary file in this way. The
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* property will still be used to notify the application of the allocated
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* filename, though.
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*
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* Last reviewed on 2009-07-10 (0.10.24)
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstqueue2.h"
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#include <glib/gstdio.h>
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#include "gst/gst-i18n-lib.h"
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#include "gst/glib-compat-private.h"
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#include <string.h>
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#ifdef G_OS_WIN32
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#include <io.h> /* lseek, open, close, read */
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#undef lseek
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#define lseek _lseeki64
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#undef off_t
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#define off_t guint64
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#else
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#include <unistd.h>
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#endif
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (queue_debug);
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#define GST_CAT_DEFAULT (queue_debug)
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GST_DEBUG_CATEGORY_STATIC (queue_dataflow);
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enum
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{
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LAST_SIGNAL
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};
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/* other defines */
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#define DEFAULT_BUFFER_SIZE 4096
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#define QUEUE_IS_USING_TEMP_FILE(queue) ((queue)->temp_location_set || (queue)->temp_template != NULL)
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#define QUEUE_IS_USING_RING_BUFFER(queue) ((queue)->ring_buffer_max_size != 0) /* for consistency with the above macro */
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#define QUEUE_IS_USING_QUEUE(queue) (!QUEUE_IS_USING_TEMP_FILE(queue) && !QUEUE_IS_USING_RING_BUFFER (queue))
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#define QUEUE_MAX_BYTES(queue) MIN((queue)->max_level.bytes, (queue)->ring_buffer_max_size)
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/* default property values */
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#define DEFAULT_MAX_SIZE_BUFFERS 100 /* 100 buffers */
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#define DEFAULT_MAX_SIZE_BYTES (2 * 1024 * 1024) /* 2 MB */
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#define DEFAULT_MAX_SIZE_TIME 2 * GST_SECOND /* 2 seconds */
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#define DEFAULT_USE_BUFFERING FALSE
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#define DEFAULT_USE_RATE_ESTIMATE TRUE
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#define DEFAULT_LOW_PERCENT 10
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#define DEFAULT_HIGH_PERCENT 99
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#define DEFAULT_TEMP_REMOVE TRUE
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#define DEFAULT_RING_BUFFER_MAX_SIZE 0
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enum
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{
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PROP_0,
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PROP_CUR_LEVEL_BUFFERS,
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PROP_CUR_LEVEL_BYTES,
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PROP_CUR_LEVEL_TIME,
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PROP_MAX_SIZE_BUFFERS,
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PROP_MAX_SIZE_BYTES,
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PROP_MAX_SIZE_TIME,
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PROP_USE_BUFFERING,
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PROP_USE_RATE_ESTIMATE,
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PROP_LOW_PERCENT,
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PROP_HIGH_PERCENT,
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PROP_TEMP_TEMPLATE,
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PROP_TEMP_LOCATION,
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PROP_TEMP_REMOVE,
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PROP_RING_BUFFER_MAX_SIZE,
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PROP_LAST
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};
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#define GST_QUEUE2_CLEAR_LEVEL(l) G_STMT_START { \
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l.buffers = 0; \
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l.bytes = 0; \
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l.time = 0; \
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l.rate_time = 0; \
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} G_STMT_END
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#define STATUS(queue, pad, msg) \
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GST_CAT_LOG_OBJECT (queue_dataflow, queue, \
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"(%s:%s) " msg ": %u of %u buffers, %u of %u " \
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"bytes, %" G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT \
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" ns, %"G_GUINT64_FORMAT" items", \
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GST_DEBUG_PAD_NAME (pad), \
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queue->cur_level.buffers, \
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queue->max_level.buffers, \
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queue->cur_level.bytes, \
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queue->max_level.bytes, \
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queue->cur_level.time, \
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queue->max_level.time, \
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(guint64) (!QUEUE_IS_USING_QUEUE(queue) ? \
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queue->current->writing_pos - queue->current->max_reading_pos : \
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queue->queue.length))
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#define GST_QUEUE2_MUTEX_LOCK(q) G_STMT_START { \
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g_mutex_lock (&q->qlock); \
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} G_STMT_END
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#define GST_QUEUE2_MUTEX_LOCK_CHECK(q,res,label) G_STMT_START { \
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GST_QUEUE2_MUTEX_LOCK (q); \
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if (res != GST_FLOW_OK) \
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goto label; \
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} G_STMT_END
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#define GST_QUEUE2_MUTEX_UNLOCK(q) G_STMT_START { \
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g_mutex_unlock (&q->qlock); \
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} G_STMT_END
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#define GST_QUEUE2_WAIT_DEL_CHECK(q, res, label) G_STMT_START { \
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STATUS (queue, q->sinkpad, "wait for DEL"); \
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q->waiting_del = TRUE; \
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g_cond_wait (&q->item_del, &queue->qlock); \
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q->waiting_del = FALSE; \
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if (res != GST_FLOW_OK) { \
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STATUS (queue, q->srcpad, "received DEL wakeup"); \
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goto label; \
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} \
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STATUS (queue, q->sinkpad, "received DEL"); \
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} G_STMT_END
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#define GST_QUEUE2_WAIT_ADD_CHECK(q, res, label) G_STMT_START { \
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STATUS (queue, q->srcpad, "wait for ADD"); \
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q->waiting_add = TRUE; \
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g_cond_wait (&q->item_add, &q->qlock); \
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q->waiting_add = FALSE; \
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if (res != GST_FLOW_OK) { \
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STATUS (queue, q->srcpad, "received ADD wakeup"); \
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goto label; \
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} \
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STATUS (queue, q->srcpad, "received ADD"); \
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} G_STMT_END
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#define GST_QUEUE2_SIGNAL_DEL(q) G_STMT_START { \
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if (q->waiting_del) { \
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STATUS (q, q->srcpad, "signal DEL"); \
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g_cond_signal (&q->item_del); \
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} \
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} G_STMT_END
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#define GST_QUEUE2_SIGNAL_ADD(q) G_STMT_START { \
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if (q->waiting_add) { \
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STATUS (q, q->sinkpad, "signal ADD"); \
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g_cond_signal (&q->item_add); \
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} \
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} G_STMT_END
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#define _do_init \
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GST_DEBUG_CATEGORY_INIT (queue_debug, "queue2", 0, "queue element"); \
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GST_DEBUG_CATEGORY_INIT (queue_dataflow, "queue2_dataflow", 0, \
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"dataflow inside the queue element");
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#define gst_queue2_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstQueue2, gst_queue2, GST_TYPE_ELEMENT, _do_init);
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static void gst_queue2_finalize (GObject * object);
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static void gst_queue2_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_queue2_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_queue2_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static GstFlowReturn gst_queue2_chain_list (GstPad * pad, GstObject * parent,
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GstBufferList * buffer_list);
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static GstFlowReturn gst_queue2_push_one (GstQueue2 * queue);
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static void gst_queue2_loop (GstPad * pad);
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static gboolean gst_queue2_handle_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_queue2_handle_sink_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_queue2_handle_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_queue2_handle_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_queue2_handle_query (GstElement * element,
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GstQuery * query);
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static GstFlowReturn gst_queue2_get_range (GstPad * pad, GstObject * parent,
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guint64 offset, guint length, GstBuffer ** buffer);
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static gboolean gst_queue2_src_activate_mode (GstPad * pad, GstObject * parent,
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GstPadMode mode, gboolean active);
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static gboolean gst_queue2_sink_activate_mode (GstPad * pad, GstObject * parent,
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GstPadMode mode, gboolean active);
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static GstStateChangeReturn gst_queue2_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_queue2_is_empty (GstQueue2 * queue);
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static gboolean gst_queue2_is_filled (GstQueue2 * queue);
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static void update_cur_level (GstQueue2 * queue, GstQueue2Range * range);
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typedef enum
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{
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GST_QUEUE2_ITEM_TYPE_UNKNOWN = 0,
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GST_QUEUE2_ITEM_TYPE_BUFFER,
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GST_QUEUE2_ITEM_TYPE_BUFFER_LIST,
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GST_QUEUE2_ITEM_TYPE_EVENT
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} GstQueue2ItemType;
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/* static guint gst_queue2_signals[LAST_SIGNAL] = { 0 }; */
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static void
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gst_queue2_class_init (GstQueue2Class * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_queue2_set_property;
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gobject_class->get_property = gst_queue2_get_property;
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/* properties */
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g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BYTES,
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g_param_spec_uint ("current-level-bytes", "Current level (kB)",
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"Current amount of data in the queue (bytes)",
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0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BUFFERS,
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g_param_spec_uint ("current-level-buffers", "Current level (buffers)",
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"Current number of buffers in the queue",
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0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_TIME,
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g_param_spec_uint64 ("current-level-time", "Current level (ns)",
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"Current amount of data in the queue (in ns)",
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0, G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES,
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g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
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"Max. amount of data in the queue (bytes, 0=disable)",
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0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BUFFERS,
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g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
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"Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
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DEFAULT_MAX_SIZE_BUFFERS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
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g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
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"Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
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DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
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g_param_spec_boolean ("use-buffering", "Use buffering",
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"Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
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DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_USE_RATE_ESTIMATE,
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g_param_spec_boolean ("use-rate-estimate", "Use Rate Estimate",
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"Estimate the bitrate of the stream to calculate time level",
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DEFAULT_USE_RATE_ESTIMATE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_LOW_PERCENT,
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g_param_spec_int ("low-percent", "Low percent",
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"Low threshold for buffering to start. Only used if use-buffering is True",
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0, 100, DEFAULT_LOW_PERCENT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_HIGH_PERCENT,
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g_param_spec_int ("high-percent", "High percent",
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"High threshold for buffering to finish. Only used if use-buffering is True",
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0, 100, DEFAULT_HIGH_PERCENT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_TEMP_TEMPLATE,
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g_param_spec_string ("temp-template", "Temporary File Template",
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"File template to store temporary files in, should contain directory "
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"and XXXXXX. (NULL == disabled)",
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NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_TEMP_LOCATION,
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g_param_spec_string ("temp-location", "Temporary File Location",
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"Location to store temporary files in (Deprecated: Only read this "
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"property, use temp-template to configure the name template)",
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NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstQueue2:temp-remove
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*
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* When temp-template is set, remove the temporary file when going to READY.
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*
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* Since: 0.10.26
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*/
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g_object_class_install_property (gobject_class, PROP_TEMP_REMOVE,
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g_param_spec_boolean ("temp-remove", "Remove the Temporary File",
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"Remove the temp-location after use",
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DEFAULT_TEMP_REMOVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstQueue2:ring-buffer-max-size
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*
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* The maximum size of the ring buffer in bytes. If set to 0, the ring
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* buffer is disabled. Default 0.
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*
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* Since: 0.10.31
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*/
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g_object_class_install_property (gobject_class, PROP_RING_BUFFER_MAX_SIZE,
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g_param_spec_uint64 ("ring-buffer-max-size",
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"Max. ring buffer size (bytes)",
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"Max. amount of data in the ring buffer (bytes, 0 = disabled)",
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0, G_MAXUINT64, DEFAULT_RING_BUFFER_MAX_SIZE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/* set several parent class virtual functions */
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gobject_class->finalize = gst_queue2_finalize;
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&srctemplate));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_set_details_simple (gstelement_class, "Queue 2",
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"Generic",
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"Simple data queue",
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"Erik Walthinsen <omega@cse.ogi.edu>, "
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"Wim Taymans <wim.taymans@gmail.com>");
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_queue2_change_state);
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gstelement_class->query = GST_DEBUG_FUNCPTR (gst_queue2_handle_query);
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}
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static void
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gst_queue2_init (GstQueue2 * queue)
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{
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queue->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
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gst_pad_set_chain_function (queue->sinkpad,
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GST_DEBUG_FUNCPTR (gst_queue2_chain));
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gst_pad_set_chain_list_function (queue->sinkpad,
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GST_DEBUG_FUNCPTR (gst_queue2_chain_list));
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gst_pad_set_activatemode_function (queue->sinkpad,
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GST_DEBUG_FUNCPTR (gst_queue2_sink_activate_mode));
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gst_pad_set_event_function (queue->sinkpad,
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GST_DEBUG_FUNCPTR (gst_queue2_handle_sink_event));
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gst_pad_set_query_function (queue->sinkpad,
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GST_DEBUG_FUNCPTR (gst_queue2_handle_sink_query));
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GST_PAD_SET_PROXY_CAPS (queue->sinkpad);
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GST_PAD_SET_PROXY_ALLOCATION (queue->sinkpad);
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gst_element_add_pad (GST_ELEMENT (queue), queue->sinkpad);
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queue->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
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gst_pad_set_activatemode_function (queue->srcpad,
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GST_DEBUG_FUNCPTR (gst_queue2_src_activate_mode));
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gst_pad_set_getrange_function (queue->srcpad,
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GST_DEBUG_FUNCPTR (gst_queue2_get_range));
|
|
gst_pad_set_event_function (queue->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_queue2_handle_src_event));
|
|
gst_pad_set_query_function (queue->srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_queue2_handle_src_query));
|
|
GST_PAD_SET_PROXY_CAPS (queue->srcpad);
|
|
gst_element_add_pad (GST_ELEMENT (queue), queue->srcpad);
|
|
|
|
/* levels */
|
|
GST_QUEUE2_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->sinktime = GST_CLOCK_TIME_NONE;
|
|
queue->srctime = GST_CLOCK_TIME_NONE;
|
|
queue->sink_tainted = TRUE;
|
|
queue->src_tainted = TRUE;
|
|
|
|
queue->srcresult = GST_FLOW_FLUSHING;
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
queue->is_eos = FALSE;
|
|
queue->in_timer = g_timer_new ();
|
|
queue->out_timer = g_timer_new ();
|
|
|
|
g_mutex_init (&queue->qlock);
|
|
queue->waiting_add = FALSE;
|
|
g_cond_init (&queue->item_add);
|
|
queue->waiting_del = FALSE;
|
|
g_cond_init (&queue->item_del);
|
|
g_queue_init (&queue->queue);
|
|
|
|
queue->buffering_percent = 100;
|
|
|
|
/* tempfile related */
|
|
queue->temp_template = NULL;
|
|
queue->temp_location = NULL;
|
|
queue->temp_location_set = FALSE;
|
|
queue->temp_remove = DEFAULT_TEMP_REMOVE;
|
|
|
|
queue->ring_buffer = NULL;
|
|
queue->ring_buffer_max_size = DEFAULT_RING_BUFFER_MAX_SIZE;
|
|
|
|
GST_DEBUG_OBJECT (queue,
|
|
"initialized queue's not_empty & not_full conditions");
|
|
}
|
|
|
|
/* called only once, as opposed to dispose */
|
|
static void
|
|
gst_queue2_finalize (GObject * object)
|
|
{
|
|
GstQueue2 *queue = GST_QUEUE2 (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_clear (&queue->queue);
|
|
g_mutex_clear (&queue->qlock);
|
|
g_cond_clear (&queue->item_add);
|
|
g_cond_clear (&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 void
|
|
debug_ranges (GstQueue2 * queue)
|
|
{
|
|
GstQueue2Range *walk;
|
|
|
|
for (walk = queue->ranges; walk; walk = walk->next) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"range [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT "] (rb [%"
|
|
G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT "]), reading %" G_GUINT64_FORMAT
|
|
" current range? %s", walk->offset, walk->writing_pos, walk->rb_offset,
|
|
walk->rb_writing_pos, walk->reading_pos,
|
|
walk == queue->current ? "**y**" : " n ");
|
|
}
|
|
}
|
|
|
|
/* clear all the downloaded ranges */
|
|
static void
|
|
clean_ranges (GstQueue2 * queue)
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "clean queue ranges");
|
|
|
|
g_slice_free_chain (GstQueue2Range, queue->ranges, next);
|
|
queue->ranges = NULL;
|
|
queue->current = NULL;
|
|
}
|
|
|
|
/* find a range that contains @offset or NULL when nothing does */
|
|
static GstQueue2Range *
|
|
find_range (GstQueue2 * queue, guint64 offset)
|
|
{
|
|
GstQueue2Range *range = NULL;
|
|
GstQueue2Range *walk;
|
|
|
|
/* first do a quick check for the current range */
|
|
for (walk = queue->ranges; walk; walk = walk->next) {
|
|
if (offset >= walk->offset && offset <= walk->writing_pos) {
|
|
/* we can reuse an existing range */
|
|
range = walk;
|
|
break;
|
|
}
|
|
}
|
|
if (range) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"found range for %" G_GUINT64_FORMAT ": [%" G_GUINT64_FORMAT "-%"
|
|
G_GUINT64_FORMAT "]", offset, range->offset, range->writing_pos);
|
|
} else {
|
|
GST_DEBUG_OBJECT (queue, "no range for %" G_GUINT64_FORMAT, offset);
|
|
}
|
|
return range;
|
|
}
|
|
|
|
static void
|
|
update_cur_level (GstQueue2 * queue, GstQueue2Range * range)
|
|
{
|
|
guint64 max_reading_pos, writing_pos;
|
|
|
|
writing_pos = range->writing_pos;
|
|
max_reading_pos = range->max_reading_pos;
|
|
|
|
if (writing_pos > max_reading_pos)
|
|
queue->cur_level.bytes = writing_pos - max_reading_pos;
|
|
else
|
|
queue->cur_level.bytes = 0;
|
|
}
|
|
|
|
/* make a new range for @offset or reuse an existing range */
|
|
static GstQueue2Range *
|
|
add_range (GstQueue2 * queue, guint64 offset)
|
|
{
|
|
GstQueue2Range *range, *prev, *next;
|
|
|
|
GST_DEBUG_OBJECT (queue, "find range for %" G_GUINT64_FORMAT, offset);
|
|
|
|
if ((range = find_range (queue, offset))) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"reusing range %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT, range->offset,
|
|
range->writing_pos);
|
|
range->writing_pos = offset;
|
|
} else {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"new range %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT, offset, offset);
|
|
|
|
range = g_slice_new0 (GstQueue2Range);
|
|
range->offset = offset;
|
|
/* we want to write to the next location in the ring buffer */
|
|
range->rb_offset = queue->current ? queue->current->rb_writing_pos : 0;
|
|
range->writing_pos = offset;
|
|
range->rb_writing_pos = range->rb_offset;
|
|
range->reading_pos = offset;
|
|
range->max_reading_pos = offset;
|
|
|
|
/* insert sorted */
|
|
prev = NULL;
|
|
next = queue->ranges;
|
|
while (next) {
|
|
if (next->offset > offset) {
|
|
/* insert before next */
|
|
GST_DEBUG_OBJECT (queue,
|
|
"insert before range %p, offset %" G_GUINT64_FORMAT, next,
|
|
next->offset);
|
|
break;
|
|
}
|
|
/* try next */
|
|
prev = next;
|
|
next = next->next;
|
|
}
|
|
range->next = next;
|
|
if (prev)
|
|
prev->next = range;
|
|
else
|
|
queue->ranges = range;
|
|
}
|
|
debug_ranges (queue);
|
|
|
|
/* update the stats for this range */
|
|
update_cur_level (queue, range);
|
|
|
|
return range;
|
|
}
|
|
|
|
|
|
/* clear and init the download ranges for offset 0 */
|
|
static void
|
|
init_ranges (GstQueue2 * queue)
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "init queue ranges");
|
|
|
|
/* get rid of all the current ranges */
|
|
clean_ranges (queue);
|
|
/* make a range for offset 0 */
|
|
queue->current = add_range (queue, 0);
|
|
}
|
|
|
|
/* 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 (GstQueue2 * queue)
|
|
{
|
|
if (queue->sink_tainted) {
|
|
queue->sinktime =
|
|
gst_segment_to_running_time (&queue->sink_segment, GST_FORMAT_TIME,
|
|
queue->sink_segment.position);
|
|
queue->sink_tainted = FALSE;
|
|
}
|
|
|
|
if (queue->src_tainted) {
|
|
queue->srctime =
|
|
gst_segment_to_running_time (&queue->src_segment, GST_FORMAT_TIME,
|
|
queue->src_segment.position);
|
|
queue->src_tainted = FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (queue, "sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (queue->sinktime), GST_TIME_ARGS (queue->srctime));
|
|
|
|
if (queue->sinktime != GST_CLOCK_TIME_NONE
|
|
&& queue->srctime != GST_CLOCK_TIME_NONE
|
|
&& queue->sinktime >= queue->srctime)
|
|
queue->cur_level.time = queue->sinktime - queue->srctime;
|
|
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 (GstQueue2 * queue, GstEvent * event, GstSegment * segment,
|
|
gboolean is_sink)
|
|
{
|
|
gst_event_copy_segment (event, segment);
|
|
|
|
if (segment->format == GST_FORMAT_BYTES) {
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
/* start is where we'll be getting from and as such writing next */
|
|
queue->current = add_range (queue, segment->start);
|
|
/* update the stats for this range */
|
|
update_cur_level (queue, queue->current);
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (queue, "configured SEGMENT %" GST_SEGMENT_FORMAT, segment);
|
|
|
|
if (is_sink)
|
|
queue->sink_tainted = TRUE;
|
|
else
|
|
queue->src_tainted = TRUE;
|
|
|
|
/* 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 (GstQueue2 * queue, GstBuffer * buffer, GstSegment * segment,
|
|
gboolean is_sink)
|
|
{
|
|
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->position;
|
|
|
|
/* add duration */
|
|
if (duration != GST_CLOCK_TIME_NONE)
|
|
timestamp += duration;
|
|
|
|
GST_DEBUG_OBJECT (queue, "position updated to %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (timestamp));
|
|
|
|
segment->position = timestamp;
|
|
|
|
if (is_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 data)
|
|
{
|
|
GstClockTime *timestamp = data;
|
|
|
|
GST_TRACE ("buffer %u has ts %" GST_TIME_FORMAT
|
|
" duration %" GST_TIME_FORMAT, idx,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*buf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (*buf)));
|
|
|
|
if (GST_BUFFER_TIMESTAMP_IS_VALID (*buf))
|
|
*timestamp = GST_BUFFER_TIMESTAMP (*buf);
|
|
|
|
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 (GstQueue2 * queue, GstBufferList * buffer_list,
|
|
GstSegment * segment, gboolean is_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, "last_stop updated to %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (timestamp));
|
|
|
|
segment->position = timestamp;
|
|
|
|
if (is_sink)
|
|
queue->sink_tainted = TRUE;
|
|
else
|
|
queue->src_tainted = TRUE;
|
|
|
|
/* calc diff with other end */
|
|
update_time_level (queue);
|
|
}
|
|
|
|
static void
|
|
update_buffering (GstQueue2 * queue)
|
|
{
|
|
gint64 percent;
|
|
gboolean post = FALSE;
|
|
|
|
if (queue->high_percent <= 0)
|
|
return;
|
|
|
|
#define GET_PERCENT(format,alt_max) ((queue->max_level.format) > 0 ? (queue->cur_level.format) * 100 / ((alt_max) > 0 ? MIN ((alt_max), (queue->max_level.format)) : (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
|
|
* reuse the logic below to stop buffering */
|
|
percent = 100;
|
|
GST_LOG_OBJECT (queue, "we are EOS");
|
|
} else {
|
|
/* figure out the percent we are filled, we take the max of all formats. */
|
|
|
|
if (!QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
percent = GET_PERCENT (bytes, 0);
|
|
} else {
|
|
guint64 rb_size = queue->ring_buffer_max_size;
|
|
percent = GET_PERCENT (bytes, rb_size);
|
|
}
|
|
percent = MAX (percent, GET_PERCENT (time, 0));
|
|
percent = MAX (percent, GET_PERCENT (buffers, 0));
|
|
|
|
/* also apply the rate estimate when we need to */
|
|
if (queue->use_rate_estimate)
|
|
percent = MAX (percent, GET_PERCENT (rate_time, 0));
|
|
}
|
|
|
|
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;
|
|
gint64 buffering_left = -1;
|
|
|
|
/* scale to high percent so that it becomes the 100% mark */
|
|
percent = percent * 100 / queue->high_percent;
|
|
/* clip */
|
|
if (percent > 100)
|
|
percent = 100;
|
|
|
|
if (percent != queue->buffering_percent) {
|
|
queue->buffering_percent = percent;
|
|
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
gint64 duration;
|
|
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue))
|
|
mode = GST_BUFFERING_TIMESHIFT;
|
|
else
|
|
mode = GST_BUFFERING_DOWNLOAD;
|
|
|
|
if (queue->byte_in_rate > 0) {
|
|
if (gst_pad_peer_query_duration (queue->sinkpad, GST_FORMAT_BYTES,
|
|
&duration)) {
|
|
buffering_left =
|
|
(gdouble) ((duration -
|
|
queue->current->writing_pos) * 1000) / queue->byte_in_rate;
|
|
}
|
|
} else {
|
|
buffering_left = G_MAXINT64;
|
|
}
|
|
} else {
|
|
mode = GST_BUFFERING_STREAM;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (queue, "buffering %d percent", (gint) percent);
|
|
message = gst_message_new_buffering (GST_OBJECT_CAST (queue),
|
|
(gint) percent);
|
|
gst_message_set_buffering_stats (message, mode,
|
|
queue->byte_in_rate, queue->byte_out_rate, buffering_left);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (queue), message);
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (queue, "filled %d percent", (gint) percent);
|
|
}
|
|
|
|
#undef GET_PERCENT
|
|
}
|
|
|
|
static void
|
|
reset_rate_timer (GstQueue2 * queue)
|
|
{
|
|
queue->bytes_in = 0;
|
|
queue->bytes_out = 0;
|
|
queue->byte_in_rate = 0.0;
|
|
queue->byte_in_period = 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.
|
|
* However, initial input rate may be subject to a burst, and should therefore
|
|
* initially also adapt more quickly to changes, and only later on give higher
|
|
* weight to previous values. */
|
|
#define AVG_IN(avg,val,w1,w2) ((avg) * (w1) + (val) * (w2)) / ((w1) + (w2))
|
|
#define AVG_OUT(avg,val) ((avg) * 3.0 + (val)) / 4.0
|
|
|
|
static void
|
|
update_in_rates (GstQueue2 * 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 ", global period %f",
|
|
period, queue->bytes_in, queue->byte_in_period);
|
|
|
|
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,
|
|
(double) queue->byte_in_period, period);
|
|
|
|
/* another data point, cap at 16 for long time running average */
|
|
if (queue->byte_in_period < 16 * RATE_INTERVAL)
|
|
queue->byte_in_period += period;
|
|
|
|
/* 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 (GstQueue2 * 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
|
|
update_cur_pos (GstQueue2 * queue, GstQueue2Range * range, guint64 pos)
|
|
{
|
|
guint64 reading_pos, max_reading_pos;
|
|
|
|
reading_pos = pos;
|
|
max_reading_pos = range->max_reading_pos;
|
|
|
|
max_reading_pos = MAX (max_reading_pos, reading_pos);
|
|
|
|
GST_DEBUG_OBJECT (queue,
|
|
"updating max_reading_pos from %" G_GUINT64_FORMAT " to %"
|
|
G_GUINT64_FORMAT, range->max_reading_pos, max_reading_pos);
|
|
range->max_reading_pos = max_reading_pos;
|
|
|
|
update_cur_level (queue, range);
|
|
}
|
|
|
|
static gboolean
|
|
perform_seek_to_offset (GstQueue2 * queue, guint64 offset)
|
|
{
|
|
GstEvent *event;
|
|
gboolean res;
|
|
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
GST_DEBUG_OBJECT (queue, "Seeking to %" G_GUINT64_FORMAT, offset);
|
|
|
|
event =
|
|
gst_event_new_seek (1.0, GST_FORMAT_BYTES,
|
|
GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
|
|
GST_SEEK_TYPE_NONE, -1);
|
|
|
|
res = gst_pad_push_event (queue->sinkpad, event);
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
|
|
if (res)
|
|
queue->current = add_range (queue, offset);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* see if there is enough data in the file to read a full buffer */
|
|
static gboolean
|
|
gst_queue2_have_data (GstQueue2 * queue, guint64 offset, guint length)
|
|
{
|
|
GstQueue2Range *range;
|
|
|
|
GST_DEBUG_OBJECT (queue, "looking for offset %" G_GUINT64_FORMAT ", len %u",
|
|
offset, length);
|
|
|
|
if ((range = find_range (queue, offset))) {
|
|
if (queue->current != range) {
|
|
GST_DEBUG_OBJECT (queue, "switching ranges, do seek to range position");
|
|
perform_seek_to_offset (queue, range->writing_pos);
|
|
}
|
|
|
|
GST_INFO_OBJECT (queue, "cur_level.bytes %u (max %" G_GUINT64_FORMAT ")",
|
|
queue->cur_level.bytes, QUEUE_MAX_BYTES (queue));
|
|
|
|
/* we have a range for offset */
|
|
GST_DEBUG_OBJECT (queue,
|
|
"we have a range %p, offset %" G_GUINT64_FORMAT ", writing_pos %"
|
|
G_GUINT64_FORMAT, range, range->offset, range->writing_pos);
|
|
|
|
if (!QUEUE_IS_USING_RING_BUFFER (queue) && queue->is_eos)
|
|
return TRUE;
|
|
|
|
if (offset + length <= range->writing_pos)
|
|
return TRUE;
|
|
else
|
|
GST_DEBUG_OBJECT (queue,
|
|
"Need more data (%" G_GUINT64_FORMAT " bytes more)",
|
|
(offset + length) - range->writing_pos);
|
|
|
|
} else {
|
|
GST_INFO_OBJECT (queue, "not found in any range");
|
|
/* we don't have the range, see how far away we are, FIXME, find a good
|
|
* threshold based on the incoming rate. */
|
|
if (!queue->is_eos && queue->current) {
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
if (offset < queue->current->offset || offset >
|
|
queue->current->writing_pos + QUEUE_MAX_BYTES (queue) -
|
|
queue->cur_level.bytes) {
|
|
perform_seek_to_offset (queue, offset);
|
|
} else {
|
|
GST_INFO_OBJECT (queue,
|
|
"requested data is within range, wait for data");
|
|
}
|
|
} else if (offset < queue->current->writing_pos + 200000) {
|
|
update_cur_pos (queue, queue->current, offset + length);
|
|
GST_INFO_OBJECT (queue, "wait for data");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* too far away, do a seek */
|
|
perform_seek_to_offset (queue, offset);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
#ifdef HAVE_FSEEKO
|
|
#define FSEEK_FILE(file,offset) (fseeko (file, (off_t) offset, SEEK_SET) != 0)
|
|
#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
|
|
#define FSEEK_FILE(file,offset) (lseek (fileno (file), (off_t) offset, SEEK_SET) == (off_t) -1)
|
|
#else
|
|
#define FSEEK_FILE(file,offset) (fseek (file, offset, SEEK_SET) != 0)
|
|
#endif
|
|
|
|
static GstFlowReturn
|
|
gst_queue2_read_data_at_offset (GstQueue2 * queue, guint64 offset, guint length,
|
|
guint8 * dst, gint64 * read_return)
|
|
{
|
|
guint8 *ring_buffer;
|
|
size_t res;
|
|
|
|
ring_buffer = queue->ring_buffer;
|
|
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue) && FSEEK_FILE (queue->temp_file, offset))
|
|
goto seek_failed;
|
|
|
|
/* this should not block */
|
|
GST_LOG_OBJECT (queue, "Reading %d bytes from offset %" G_GUINT64_FORMAT,
|
|
length, offset);
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
res = fread (dst, 1, length, queue->temp_file);
|
|
} else {
|
|
memcpy (dst, ring_buffer + offset, length);
|
|
res = length;
|
|
}
|
|
|
|
GST_LOG_OBJECT (queue, "read %" G_GSIZE_FORMAT " bytes", res);
|
|
|
|
if (G_UNLIKELY (res < length)) {
|
|
if (!QUEUE_IS_USING_TEMP_FILE (queue))
|
|
goto could_not_read;
|
|
/* check for errors or EOF */
|
|
if (ferror (queue->temp_file))
|
|
goto could_not_read;
|
|
if (feof (queue->temp_file) && length > 0)
|
|
goto eos;
|
|
}
|
|
|
|
*read_return = res;
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
seek_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (queue, RESOURCE, SEEK, (NULL), GST_ERROR_SYSTEM);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
could_not_read:
|
|
{
|
|
GST_ELEMENT_ERROR (queue, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
eos:
|
|
{
|
|
GST_DEBUG ("non-regular file hits EOS");
|
|
return GST_FLOW_EOS;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_queue2_create_read (GstQueue2 * queue, guint64 offset, guint length,
|
|
GstBuffer ** buffer)
|
|
{
|
|
GstBuffer *buf;
|
|
GstMapInfo info;
|
|
guint8 *data;
|
|
guint64 file_offset;
|
|
guint block_length, remaining, read_length;
|
|
guint64 rb_size;
|
|
guint64 rpos;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
/* allocate the output buffer of the requested size */
|
|
buf = gst_buffer_new_allocate (NULL, length, 0);
|
|
gst_buffer_map (buf, &info, GST_MAP_WRITE);
|
|
data = info.data;
|
|
|
|
GST_DEBUG_OBJECT (queue, "Reading %u bytes from %" G_GUINT64_FORMAT, length,
|
|
offset);
|
|
|
|
rpos = offset;
|
|
rb_size = queue->ring_buffer_max_size;
|
|
|
|
remaining = length;
|
|
while (remaining > 0) {
|
|
/* configure how much/whether to read */
|
|
if (!gst_queue2_have_data (queue, rpos, remaining)) {
|
|
read_length = 0;
|
|
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
guint64 level;
|
|
|
|
/* calculate how far away the offset is */
|
|
if (queue->current->writing_pos > rpos)
|
|
level = queue->current->writing_pos - rpos;
|
|
else
|
|
level = 0;
|
|
|
|
GST_DEBUG_OBJECT (queue,
|
|
"reading %" G_GUINT64_FORMAT ", writing %" G_GUINT64_FORMAT
|
|
", level %" G_GUINT64_FORMAT,
|
|
rpos, queue->current->writing_pos, level);
|
|
|
|
if (level >= rb_size) {
|
|
/* we don't have the data but if we have a ring buffer that is full, we
|
|
* need to read */
|
|
GST_DEBUG_OBJECT (queue,
|
|
"ring buffer full, reading ring-buffer-max-size %"
|
|
G_GUINT64_FORMAT " bytes", rb_size);
|
|
read_length = rb_size;
|
|
} else if (queue->is_eos) {
|
|
/* won't get any more data so read any data we have */
|
|
if (level) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"EOS hit but read %" G_GUINT64_FORMAT " bytes that we have",
|
|
level);
|
|
read_length = level;
|
|
} else
|
|
goto hit_eos;
|
|
}
|
|
}
|
|
|
|
if (read_length == 0) {
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)
|
|
&& queue->current->max_reading_pos > rpos) {
|
|
/* protect cached data (data between offset and max_reading_pos)
|
|
* and update current level */
|
|
GST_DEBUG_OBJECT (queue,
|
|
"protecting cached data [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT
|
|
"]", rpos, queue->current->max_reading_pos);
|
|
queue->current->max_reading_pos = rpos;
|
|
update_cur_level (queue, queue->current);
|
|
}
|
|
GST_DEBUG_OBJECT (queue, "waiting for add");
|
|
GST_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
|
|
continue;
|
|
}
|
|
} else {
|
|
/* we have the requested data so read it */
|
|
read_length = remaining;
|
|
}
|
|
|
|
/* set range reading_pos to actual reading position for this read */
|
|
queue->current->reading_pos = rpos;
|
|
|
|
/* configure how much and from where to read */
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
file_offset =
|
|
(queue->current->rb_offset + (rpos -
|
|
queue->current->offset)) % rb_size;
|
|
if (file_offset + read_length > rb_size) {
|
|
block_length = rb_size - file_offset;
|
|
} else {
|
|
block_length = read_length;
|
|
}
|
|
} else {
|
|
file_offset = rpos;
|
|
block_length = read_length;
|
|
}
|
|
|
|
/* while we still have data to read, we loop */
|
|
while (read_length > 0) {
|
|
gint64 read_return;
|
|
|
|
ret =
|
|
gst_queue2_read_data_at_offset (queue, file_offset, block_length,
|
|
data, &read_return);
|
|
if (ret != GST_FLOW_OK)
|
|
goto read_error;
|
|
|
|
file_offset += read_return;
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue))
|
|
file_offset %= rb_size;
|
|
|
|
data += read_return;
|
|
read_length -= read_return;
|
|
block_length = read_length;
|
|
remaining -= read_return;
|
|
|
|
rpos = (queue->current->reading_pos += read_return);
|
|
update_cur_pos (queue, queue->current, queue->current->reading_pos);
|
|
}
|
|
GST_QUEUE2_SIGNAL_DEL (queue);
|
|
GST_DEBUG_OBJECT (queue, "%u bytes left to read", remaining);
|
|
}
|
|
|
|
gst_buffer_unmap (buf, &info);
|
|
gst_buffer_resize (buf, 0, length);
|
|
|
|
GST_BUFFER_OFFSET (buf) = offset;
|
|
GST_BUFFER_OFFSET_END (buf) = offset + length;
|
|
|
|
*buffer = buf;
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
hit_eos:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "EOS hit and we don't have any requested data");
|
|
gst_buffer_unmap (buf, &info);
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_EOS;
|
|
}
|
|
out_flushing:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "we are flushing");
|
|
gst_buffer_unmap (buf, &info);
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_FLUSHING;
|
|
}
|
|
read_error:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "we have a read error");
|
|
gst_buffer_unmap (buf, &info);
|
|
gst_buffer_unref (buf);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* should be called with QUEUE_LOCK */
|
|
static GstMiniObject *
|
|
gst_queue2_read_item_from_file (GstQueue2 * queue)
|
|
{
|
|
GstMiniObject *item;
|
|
|
|
if (queue->stream_start_event != NULL) {
|
|
item = GST_MINI_OBJECT_CAST (queue->stream_start_event);
|
|
queue->stream_start_event = NULL;
|
|
} else if (queue->starting_segment != NULL) {
|
|
item = GST_MINI_OBJECT_CAST (queue->starting_segment);
|
|
queue->starting_segment = NULL;
|
|
} else {
|
|
GstFlowReturn ret;
|
|
GstBuffer *buffer;
|
|
guint64 reading_pos;
|
|
|
|
reading_pos = queue->current->reading_pos;
|
|
|
|
ret =
|
|
gst_queue2_create_read (queue, reading_pos, DEFAULT_BUFFER_SIZE,
|
|
&buffer);
|
|
|
|
switch (ret) {
|
|
case GST_FLOW_OK:
|
|
item = GST_MINI_OBJECT_CAST (buffer);
|
|
break;
|
|
case GST_FLOW_EOS:
|
|
item = GST_MINI_OBJECT_CAST (gst_event_new_eos ());
|
|
break;
|
|
default:
|
|
item = NULL;
|
|
break;
|
|
}
|
|
}
|
|
return item;
|
|
}
|
|
|
|
/* must be called with MUTEX_LOCK. Will briefly release the lock when notifying
|
|
* the temp filename. */
|
|
static gboolean
|
|
gst_queue2_open_temp_location_file (GstQueue2 * queue)
|
|
{
|
|
gint fd = -1;
|
|
gchar *name = NULL;
|
|
|
|
if (queue->temp_file)
|
|
goto already_opened;
|
|
|
|
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;
|
|
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
/* we can't emit the notify with the lock */
|
|
g_object_notify (G_OBJECT (queue), "temp-location");
|
|
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
} 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;
|
|
}
|
|
GST_DEBUG_OBJECT (queue, "opened temp file %s", queue->temp_template);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
already_opened:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "temp file was already open");
|
|
return TRUE;
|
|
}
|
|
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_queue2_close_temp_location_file (GstQueue2 * queue)
|
|
{
|
|
/* nothing to do */
|
|
if (queue->temp_file == NULL)
|
|
return;
|
|
|
|
GST_DEBUG_OBJECT (queue, "closing temp file");
|
|
|
|
fflush (queue->temp_file);
|
|
fclose (queue->temp_file);
|
|
|
|
if (queue->temp_remove)
|
|
remove (queue->temp_location);
|
|
|
|
queue->temp_file = NULL;
|
|
clean_ranges (queue);
|
|
}
|
|
|
|
static void
|
|
gst_queue2_flush_temp_file (GstQueue2 * 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);
|
|
}
|
|
|
|
static void
|
|
gst_queue2_locked_flush (GstQueue2 * queue)
|
|
{
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue))
|
|
gst_queue2_flush_temp_file (queue);
|
|
init_ranges (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_QUEUE2_CLEAR_LEVEL (queue->cur_level);
|
|
gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
|
|
gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
|
|
queue->sinktime = queue->srctime = GST_CLOCK_TIME_NONE;
|
|
queue->sink_tainted = queue->src_tainted = TRUE;
|
|
if (queue->starting_segment != NULL)
|
|
gst_event_unref (queue->starting_segment);
|
|
queue->starting_segment = NULL;
|
|
queue->segment_event_received = FALSE;
|
|
gst_event_replace (&queue->stream_start_event, NULL);
|
|
|
|
/* we deleted a lot of something */
|
|
GST_QUEUE2_SIGNAL_DEL (queue);
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_wait_free_space (GstQueue2 * queue)
|
|
{
|
|
/* We make space available if we're "full" according to whatever
|
|
* the user defined as "full". */
|
|
if (gst_queue2_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_QUEUE2_WAIT_DEL_CHECK (queue, queue->sinkresult, out_flushing);
|
|
}
|
|
while (gst_queue2_is_filled (queue));
|
|
|
|
/* and continue if we were running before */
|
|
if (started)
|
|
g_timer_continue (queue->in_timer);
|
|
}
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
out_flushing:
|
|
{
|
|
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is flushing");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_create_write (GstQueue2 * queue, GstBuffer * buffer)
|
|
{
|
|
GstMapInfo info;
|
|
guint8 *data, *ring_buffer;
|
|
guint size, rb_size;
|
|
guint64 writing_pos, new_writing_pos;
|
|
GstQueue2Range *range, *prev, *next;
|
|
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue))
|
|
writing_pos = queue->current->rb_writing_pos;
|
|
else
|
|
writing_pos = queue->current->writing_pos;
|
|
ring_buffer = queue->ring_buffer;
|
|
rb_size = queue->ring_buffer_max_size;
|
|
|
|
gst_buffer_map (buffer, &info, GST_MAP_READ);
|
|
|
|
size = info.size;
|
|
data = info.data;
|
|
|
|
GST_DEBUG_OBJECT (queue, "Writing %u bytes to %" G_GUINT64_FORMAT, size,
|
|
GST_BUFFER_OFFSET (buffer));
|
|
|
|
while (size > 0) {
|
|
guint to_write;
|
|
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
gint64 space;
|
|
|
|
/* calculate the space in the ring buffer not used by data from
|
|
* the current range */
|
|
while (QUEUE_MAX_BYTES (queue) <= queue->cur_level.bytes) {
|
|
/* wait until there is some free space */
|
|
GST_QUEUE2_WAIT_DEL_CHECK (queue, queue->sinkresult, out_flushing);
|
|
}
|
|
/* get the amount of space we have */
|
|
space = QUEUE_MAX_BYTES (queue) - queue->cur_level.bytes;
|
|
|
|
/* calculate if we need to split or if we can write the entire
|
|
* buffer now */
|
|
to_write = MIN (size, space);
|
|
|
|
/* the writing position in the ring buffer after writing (part
|
|
* or all of) the buffer */
|
|
new_writing_pos = (writing_pos + to_write) % rb_size;
|
|
|
|
prev = NULL;
|
|
range = queue->ranges;
|
|
|
|
/* if we need to overwrite data in the ring buffer, we need to
|
|
* update the ranges
|
|
*
|
|
* warning: this code is complicated and includes some
|
|
* simplifications - pen, paper and diagrams for the cases
|
|
* recommended! */
|
|
while (range) {
|
|
guint64 range_data_start, range_data_end;
|
|
GstQueue2Range *range_to_destroy = NULL;
|
|
|
|
range_data_start = range->rb_offset;
|
|
range_data_end = range->rb_writing_pos;
|
|
|
|
/* handle the special case where the range has no data in it */
|
|
if (range->writing_pos == range->offset) {
|
|
if (range != queue->current) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
|
|
G_GUINT64_FORMAT, range->offset, range->writing_pos);
|
|
/* remove range */
|
|
range_to_destroy = range;
|
|
if (prev)
|
|
prev->next = range->next;
|
|
}
|
|
goto next_range;
|
|
}
|
|
|
|
if (range_data_end > range_data_start) {
|
|
if (writing_pos >= range_data_end && new_writing_pos >= writing_pos)
|
|
goto next_range;
|
|
|
|
if (new_writing_pos > range_data_start) {
|
|
if (new_writing_pos >= range_data_end) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
|
|
G_GUINT64_FORMAT, range->offset, range->writing_pos);
|
|
/* remove range */
|
|
range_to_destroy = range;
|
|
if (prev)
|
|
prev->next = range->next;
|
|
} else {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"advancing offsets from %" G_GUINT64_FORMAT " (%"
|
|
G_GUINT64_FORMAT ") to %" G_GUINT64_FORMAT " (%"
|
|
G_GUINT64_FORMAT ")", range->offset, range->rb_offset,
|
|
range->offset + new_writing_pos - range_data_start,
|
|
new_writing_pos);
|
|
range->offset += (new_writing_pos - range_data_start);
|
|
range->rb_offset = new_writing_pos;
|
|
}
|
|
}
|
|
} else {
|
|
guint64 new_wpos_virt = writing_pos + to_write;
|
|
|
|
if (new_wpos_virt <= range_data_start)
|
|
goto next_range;
|
|
|
|
if (new_wpos_virt > rb_size && new_writing_pos >= range_data_end) {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
|
|
G_GUINT64_FORMAT, range->offset, range->writing_pos);
|
|
/* remove range */
|
|
range_to_destroy = range;
|
|
if (prev)
|
|
prev->next = range->next;
|
|
} else {
|
|
GST_DEBUG_OBJECT (queue,
|
|
"advancing offsets from %" G_GUINT64_FORMAT " (%"
|
|
G_GUINT64_FORMAT ") to %" G_GUINT64_FORMAT " (%"
|
|
G_GUINT64_FORMAT ")", range->offset, range->rb_offset,
|
|
range->offset + new_writing_pos - range_data_start,
|
|
new_writing_pos);
|
|
range->offset += (new_wpos_virt - range_data_start);
|
|
range->rb_offset = new_writing_pos;
|
|
}
|
|
}
|
|
|
|
next_range:
|
|
if (!range_to_destroy)
|
|
prev = range;
|
|
|
|
range = range->next;
|
|
if (range_to_destroy) {
|
|
if (range_to_destroy == queue->ranges)
|
|
queue->ranges = range;
|
|
g_slice_free (GstQueue2Range, range_to_destroy);
|
|
range_to_destroy = NULL;
|
|
}
|
|
}
|
|
} else {
|
|
to_write = size;
|
|
new_writing_pos = writing_pos + to_write;
|
|
}
|
|
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)
|
|
&& FSEEK_FILE (queue->temp_file, writing_pos))
|
|
goto seek_failed;
|
|
|
|
if (new_writing_pos > writing_pos) {
|
|
GST_INFO_OBJECT (queue,
|
|
"writing %u bytes to range [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT
|
|
"] (rb wpos %" G_GUINT64_FORMAT ")", to_write, queue->current->offset,
|
|
queue->current->writing_pos, queue->current->rb_writing_pos);
|
|
/* either not using ring buffer or no wrapping, just write */
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
if (fwrite (data, to_write, 1, queue->temp_file) != 1)
|
|
goto handle_error;
|
|
} else {
|
|
memcpy (ring_buffer + writing_pos, data, to_write);
|
|
}
|
|
|
|
if (!QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
/* try to merge with next range */
|
|
while ((next = queue->current->next)) {
|
|
GST_INFO_OBJECT (queue,
|
|
"checking merge with next range %" G_GUINT64_FORMAT " < %"
|
|
G_GUINT64_FORMAT, new_writing_pos, next->offset);
|
|
if (new_writing_pos < next->offset)
|
|
break;
|
|
|
|
GST_DEBUG_OBJECT (queue, "merging ranges %" G_GUINT64_FORMAT,
|
|
next->writing_pos);
|
|
|
|
/* remove the group, we could choose to not read the data in this range
|
|
* again. This would involve us doing a seek to the current writing position
|
|
* in the range. FIXME, It would probably make sense to do a seek when there
|
|
* is a lot of data in the range we merged with to avoid reading it all
|
|
* again. */
|
|
queue->current->next = next->next;
|
|
g_slice_free (GstQueue2Range, next);
|
|
|
|
debug_ranges (queue);
|
|
}
|
|
goto update_and_signal;
|
|
}
|
|
} else {
|
|
/* wrapping */
|
|
guint block_one, block_two;
|
|
|
|
block_one = rb_size - writing_pos;
|
|
block_two = to_write - block_one;
|
|
|
|
if (block_one > 0) {
|
|
GST_INFO_OBJECT (queue, "writing %u bytes", block_one);
|
|
/* write data to end of ring buffer */
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
if (fwrite (data, block_one, 1, queue->temp_file) != 1)
|
|
goto handle_error;
|
|
} else {
|
|
memcpy (ring_buffer + writing_pos, data, block_one);
|
|
}
|
|
}
|
|
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue) && FSEEK_FILE (queue->temp_file, 0))
|
|
goto seek_failed;
|
|
|
|
if (block_two > 0) {
|
|
GST_INFO_OBJECT (queue, "writing %u bytes", block_two);
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
if (fwrite (data + block_one, block_two, 1, queue->temp_file) != 1)
|
|
goto handle_error;
|
|
} else {
|
|
memcpy (ring_buffer, data + block_one, block_two);
|
|
}
|
|
}
|
|
}
|
|
|
|
update_and_signal:
|
|
/* update the writing positions */
|
|
size -= to_write;
|
|
GST_INFO_OBJECT (queue,
|
|
"wrote %u bytes to %" G_GUINT64_FORMAT " (%u bytes remaining to write)",
|
|
to_write, writing_pos, size);
|
|
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
data += to_write;
|
|
queue->current->writing_pos += to_write;
|
|
queue->current->rb_writing_pos = writing_pos = new_writing_pos;
|
|
} else {
|
|
queue->current->writing_pos = writing_pos = new_writing_pos;
|
|
}
|
|
update_cur_level (queue, queue->current);
|
|
|
|
/* update the buffering status */
|
|
if (queue->use_buffering)
|
|
update_buffering (queue);
|
|
|
|
GST_INFO_OBJECT (queue, "cur_level.bytes %u (max %" G_GUINT64_FORMAT ")",
|
|
queue->cur_level.bytes, QUEUE_MAX_BYTES (queue));
|
|
|
|
GST_QUEUE2_SIGNAL_ADD (queue);
|
|
}
|
|
|
|
gst_buffer_unmap (buffer, &info);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
out_flushing:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "we are flushing");
|
|
gst_buffer_unmap (buffer, &info);
|
|
/* FIXME - GST_FLOW_EOS ? */
|
|
return FALSE;
|
|
}
|
|
seek_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (queue, RESOURCE, SEEK, (NULL), GST_ERROR_SYSTEM);
|
|
gst_buffer_unmap (buffer, &info);
|
|
return FALSE;
|
|
}
|
|
handle_error:
|
|
{
|
|
switch (errno) {
|
|
case ENOSPC:{
|
|
GST_ELEMENT_ERROR (queue, RESOURCE, NO_SPACE_LEFT, (NULL), (NULL));
|
|
break;
|
|
}
|
|
default:{
|
|
GST_ELEMENT_ERROR (queue, RESOURCE, WRITE,
|
|
(_("Error while writing to download file.")),
|
|
("%s", g_strerror (errno)));
|
|
}
|
|
}
|
|
gst_buffer_unmap (buffer, &info);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
buffer_list_create_write (GstBuffer ** buf, guint idx, gpointer q)
|
|
{
|
|
GstQueue2 *queue = q;
|
|
|
|
GST_TRACE_OBJECT (queue,
|
|
"writing buffer %u of size %" G_GSIZE_FORMAT " bytes", idx,
|
|
gst_buffer_get_size (*buf));
|
|
|
|
if (!gst_queue2_create_write (queue, *buf)) {
|
|
GST_INFO_OBJECT (queue, "create_write() returned FALSE, bailing out");
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
buffer_list_calc_size (GstBuffer ** buf, guint idx, gpointer data)
|
|
{
|
|
guint *p_size = data;
|
|
gsize buf_size;
|
|
|
|
buf_size = gst_buffer_get_size (*buf);
|
|
GST_TRACE ("buffer %u in has size %" G_GSIZE_FORMAT, idx, buf_size);
|
|
*p_size += buf_size;
|
|
return TRUE;
|
|
}
|
|
|
|
/* enqueue an item an update the level stats */
|
|
static void
|
|
gst_queue2_locked_enqueue (GstQueue2 * queue, gpointer item,
|
|
GstQueue2ItemType item_type)
|
|
{
|
|
if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
|
|
GstBuffer *buffer;
|
|
guint size;
|
|
|
|
buffer = GST_BUFFER_CAST (item);
|
|
size = gst_buffer_get_size (buffer);
|
|
|
|
/* add buffer to the statistics */
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
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, TRUE);
|
|
/* update the byterate stats */
|
|
update_in_rates (queue);
|
|
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
/* FIXME - check return value? */
|
|
gst_queue2_create_write (queue, buffer);
|
|
}
|
|
} else if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
|
|
GstBufferList *buffer_list;
|
|
guint size = 0;
|
|
|
|
buffer_list = GST_BUFFER_LIST_CAST (item);
|
|
|
|
gst_buffer_list_foreach (buffer_list, buffer_list_calc_size, &size);
|
|
GST_LOG_OBJECT (queue, "total size of buffer list: %u bytes", size);
|
|
|
|
/* add buffer to the statistics */
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
queue->cur_level.buffers++;
|
|
queue->cur_level.bytes += size;
|
|
}
|
|
queue->bytes_in += size;
|
|
|
|
/* apply new buffer to segment stats */
|
|
apply_buffer_list (queue, buffer_list, &queue->sink_segment, TRUE);
|
|
|
|
/* update the byterate stats */
|
|
update_in_rates (queue);
|
|
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
gst_buffer_list_foreach (buffer_list, buffer_list_create_write, queue);
|
|
}
|
|
} else if (item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
|
|
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. */
|
|
GST_DEBUG_OBJECT (queue, "we have EOS");
|
|
queue->is_eos = TRUE;
|
|
break;
|
|
case GST_EVENT_SEGMENT:
|
|
apply_segment (queue, event, &queue->sink_segment, TRUE);
|
|
/* This is our first new segment, we hold it
|
|
* as we can't save it on the temp file */
|
|
if (!QUEUE_IS_USING_QUEUE (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 EOS
|
|
* from downstream */
|
|
queue->unexpected = FALSE;
|
|
break;
|
|
case GST_EVENT_STREAM_START:
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
gst_event_replace (&queue->stream_start_event, event);
|
|
gst_event_unref (event);
|
|
item = NULL;
|
|
}
|
|
break;
|
|
default:
|
|
if (!QUEUE_IS_USING_QUEUE (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 */
|
|
if (queue->use_buffering)
|
|
update_buffering (queue);
|
|
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
g_queue_push_tail (&queue->queue, item);
|
|
} else {
|
|
gst_mini_object_unref (GST_MINI_OBJECT_CAST (item));
|
|
}
|
|
|
|
GST_QUEUE2_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_queue2_locked_dequeue (GstQueue2 * queue, GstQueue2ItemType * item_type)
|
|
{
|
|
GstMiniObject *item;
|
|
|
|
if (!QUEUE_IS_USING_QUEUE (queue))
|
|
item = gst_queue2_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_get_size (buffer);
|
|
*item_type = GST_QUEUE2_ITEM_TYPE_BUFFER;
|
|
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"retrieved buffer %p from queue", buffer);
|
|
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
queue->cur_level.buffers--;
|
|
queue->cur_level.bytes -= size;
|
|
}
|
|
queue->bytes_out += size;
|
|
|
|
apply_buffer (queue, buffer, &queue->src_segment, FALSE);
|
|
/* update the byterate stats */
|
|
update_out_rates (queue);
|
|
/* update the buffering */
|
|
if (queue->use_buffering)
|
|
update_buffering (queue);
|
|
|
|
} else if (GST_IS_EVENT (item)) {
|
|
GstEvent *event = GST_EVENT_CAST (item);
|
|
|
|
*item_type = GST_QUEUE2_ITEM_TYPE_EVENT;
|
|
|
|
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_QUEUE2_CLEAR_LEVEL (queue->cur_level);
|
|
break;
|
|
case GST_EVENT_SEGMENT:
|
|
apply_segment (queue, event, &queue->src_segment, FALSE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (GST_IS_BUFFER_LIST (item)) {
|
|
GstBufferList *buffer_list;
|
|
guint size = 0;
|
|
|
|
buffer_list = GST_BUFFER_LIST_CAST (item);
|
|
gst_buffer_list_foreach (buffer_list, buffer_list_calc_size, &size);
|
|
*item_type = GST_QUEUE2_ITEM_TYPE_BUFFER_LIST;
|
|
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"retrieved buffer list %p from queue", buffer_list);
|
|
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
queue->cur_level.buffers--;
|
|
queue->cur_level.bytes -= size;
|
|
}
|
|
queue->bytes_out += size;
|
|
|
|
apply_buffer_list (queue, buffer_list, &queue->src_segment, FALSE);
|
|
/* update the byterate stats */
|
|
update_out_rates (queue);
|
|
/* update the buffering */
|
|
if (queue->use_buffering)
|
|
update_buffering (queue);
|
|
|
|
} else {
|
|
g_warning
|
|
("Unexpected item %p dequeued from queue %s (refcounting problem?)",
|
|
item, GST_OBJECT_NAME (queue));
|
|
item = NULL;
|
|
*item_type = GST_QUEUE2_ITEM_TYPE_UNKNOWN;
|
|
}
|
|
GST_QUEUE2_SIGNAL_DEL (queue);
|
|
|
|
return item;
|
|
|
|
/* ERRORS */
|
|
no_item:
|
|
{
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue, "the queue is empty");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_handle_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_START:
|
|
{
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush start event");
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
/* forward event */
|
|
gst_pad_push_event (queue->srcpad, event);
|
|
|
|
/* now unblock the chain function */
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
queue->srcresult = GST_FLOW_FLUSHING;
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
/* unblock the loop and chain functions */
|
|
GST_QUEUE2_SIGNAL_ADD (queue);
|
|
GST_QUEUE2_SIGNAL_DEL (queue);
|
|
GST_QUEUE2_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");
|
|
} else {
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
/* flush the sink pad */
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
GST_QUEUE2_SIGNAL_DEL (queue);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
gst_event_unref (event);
|
|
}
|
|
goto done;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
{
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush stop event");
|
|
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
/* forward event */
|
|
gst_pad_push_event (queue->srcpad, event);
|
|
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
gst_queue2_locked_flush (queue);
|
|
queue->srcresult = GST_FLOW_OK;
|
|
queue->sinkresult = 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_queue2_loop,
|
|
queue->srcpad);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
} else {
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
queue->segment_event_received = FALSE;
|
|
queue->is_eos = FALSE;
|
|
queue->unexpected = FALSE;
|
|
queue->sinkresult = GST_FLOW_OK;
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
gst_event_unref (event);
|
|
}
|
|
goto done;
|
|
}
|
|
default:
|
|
if (GST_EVENT_IS_SERIALIZED (event)) {
|
|
/* serialized events go in the queue */
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->sinkresult, out_flushing);
|
|
/* refuse more events on EOS */
|
|
if (queue->is_eos)
|
|
goto out_eos;
|
|
gst_queue2_locked_enqueue (queue, event, GST_QUEUE2_ITEM_TYPE_EVENT);
|
|
GST_QUEUE2_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_QUEUE2_MUTEX_UNLOCK (queue);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
out_eos:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "refusing event, we are EOS");
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_handle_sink_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
gboolean res;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_is_empty (GstQueue2 * queue)
|
|
{
|
|
/* never empty on EOS */
|
|
if (queue->is_eos)
|
|
return FALSE;
|
|
|
|
if (!QUEUE_IS_USING_QUEUE (queue) && queue->current) {
|
|
return queue->current->writing_pos <= queue->current->max_reading_pos;
|
|
} else {
|
|
if (queue->queue.length == 0)
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_is_filled (GstQueue2 * queue)
|
|
{
|
|
gboolean res;
|
|
|
|
/* always filled on EOS */
|
|
if (queue->is_eos)
|
|
return TRUE;
|
|
|
|
#define CHECK_FILLED(format,alt_max) ((queue->max_level.format) > 0 && \
|
|
(queue->cur_level.format) >= ((alt_max) ? \
|
|
MIN ((queue->max_level.format), (alt_max)) : (queue->max_level.format)))
|
|
|
|
/* if using a ring buffer we're filled if all ring buffer space is used
|
|
* _by the current range_ */
|
|
if (QUEUE_IS_USING_RING_BUFFER (queue)) {
|
|
guint64 rb_size = queue->ring_buffer_max_size;
|
|
GST_DEBUG_OBJECT (queue,
|
|
"max bytes %u, rb size %" G_GUINT64_FORMAT ", cur bytes %u",
|
|
queue->max_level.bytes, rb_size, queue->cur_level.bytes);
|
|
return CHECK_FILLED (bytes, rb_size);
|
|
}
|
|
|
|
/* 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;
|
|
|
|
/* we are filled if one of the current levels exceeds the max */
|
|
res = CHECK_FILLED (buffers, 0) || CHECK_FILLED (bytes, 0)
|
|
|| CHECK_FILLED (time, 0);
|
|
|
|
/* 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, 0);
|
|
|
|
#undef CHECK_FILLED
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_queue2_chain_buffer_or_buffer_list (GstQueue2 * queue,
|
|
GstMiniObject * item, GstQueue2ItemType item_type)
|
|
{
|
|
/* we have to lock the queue since we span threads */
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->sinkresult, 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;
|
|
|
|
if (!gst_queue2_wait_free_space (queue))
|
|
goto out_flushing;
|
|
|
|
/* put buffer in queue now */
|
|
gst_queue2_locked_enqueue (queue, item, item_type);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
/* special conditions */
|
|
out_flushing:
|
|
{
|
|
GstFlowReturn ret = queue->sinkresult;
|
|
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"exit because task paused, reason: %s", gst_flow_get_name (ret));
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
gst_mini_object_unref (item);
|
|
|
|
return ret;
|
|
}
|
|
out_eos:
|
|
{
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
gst_mini_object_unref (item);
|
|
|
|
return GST_FLOW_EOS;
|
|
}
|
|
out_unexpected:
|
|
{
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
gst_mini_object_unref (item);
|
|
|
|
return GST_FLOW_EOS;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_queue2_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
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 (GST_BUFFER_TIMESTAMP (buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
|
|
|
|
return gst_queue2_chain_buffer_or_buffer_list (queue,
|
|
GST_MINI_OBJECT_CAST (buffer), GST_QUEUE2_ITEM_TYPE_BUFFER);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_queue2_chain_list (GstPad * pad, GstObject * parent,
|
|
GstBufferList * buffer_list)
|
|
{
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"received buffer list %p", buffer_list);
|
|
|
|
return gst_queue2_chain_buffer_or_buffer_list (queue,
|
|
GST_MINI_OBJECT_CAST (buffer_list), GST_QUEUE2_ITEM_TYPE_BUFFER_LIST);
|
|
}
|
|
|
|
static GstMiniObject *
|
|
gst_queue2_dequeue_on_eos (GstQueue2 * queue, GstQueue2ItemType * item_type)
|
|
{
|
|
GstMiniObject *data;
|
|
|
|
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 until we receive something
|
|
* pushable again or we get flushed. */
|
|
while ((data = gst_queue2_locked_dequeue (queue, item_type))) {
|
|
if (*item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"dropping EOS buffer %p", data);
|
|
gst_buffer_unref (GST_BUFFER_CAST (data));
|
|
} else if (*item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
|
|
GstEvent *event = GST_EVENT_CAST (data);
|
|
GstEventType type = GST_EVENT_TYPE (event);
|
|
|
|
if (type == GST_EVENT_EOS || type == GST_EVENT_SEGMENT) {
|
|
/* 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));
|
|
return data;
|
|
}
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"dropping EOS event %p", event);
|
|
gst_event_unref (event);
|
|
} else if (*item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"dropping EOS buffer list %p", data);
|
|
gst_buffer_list_unref (GST_BUFFER_LIST_CAST (data));
|
|
}
|
|
}
|
|
/* 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;
|
|
return NULL;
|
|
}
|
|
|
|
/* dequeue an item from the queue an push it downstream. This functions returns
|
|
* the result of the push. */
|
|
static GstFlowReturn
|
|
gst_queue2_push_one (GstQueue2 * queue)
|
|
{
|
|
GstFlowReturn result = GST_FLOW_OK;
|
|
GstMiniObject *data;
|
|
GstQueue2ItemType item_type;
|
|
|
|
data = gst_queue2_locked_dequeue (queue, &item_type);
|
|
if (data == NULL)
|
|
goto no_item;
|
|
|
|
next:
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
|
|
GstBuffer *buffer;
|
|
#if 0
|
|
GstCaps *caps;
|
|
#endif
|
|
|
|
buffer = GST_BUFFER_CAST (data);
|
|
#if 0
|
|
caps = GST_BUFFER_CAPS (buffer);
|
|
#endif
|
|
|
|
#if 0
|
|
/* 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);
|
|
#endif
|
|
|
|
result = gst_pad_push (queue->srcpad, buffer);
|
|
|
|
/* need to check for srcresult here as well */
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
|
|
if (result == GST_FLOW_EOS) {
|
|
data = gst_queue2_dequeue_on_eos (queue, &item_type);
|
|
if (data != NULL)
|
|
goto next;
|
|
/* Since we will still accept EOS and SEGMENT we return _FLOW_OK
|
|
* to the caller so that the task function does not shut down */
|
|
result = GST_FLOW_OK;
|
|
}
|
|
} else if (item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
|
|
GstEvent *event = GST_EVENT_CAST (data);
|
|
GstEventType type = GST_EVENT_TYPE (event);
|
|
|
|
gst_pad_push_event (queue->srcpad, event);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
|
|
} else if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
|
|
GstBufferList *buffer_list;
|
|
#if 0
|
|
GstBuffer *first_buf;
|
|
GstCaps *caps;
|
|
#endif
|
|
|
|
buffer_list = GST_BUFFER_LIST_CAST (data);
|
|
|
|
#if 0
|
|
first_buf = gst_buffer_list_get (buffer_list, 0);
|
|
caps = (first_buf != NULL) ? GST_BUFFER_CAPS (first_buf) : NULL;
|
|
|
|
/* 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);
|
|
#endif
|
|
|
|
result = gst_pad_push_list (queue->srcpad, buffer_list);
|
|
|
|
/* need to check for srcresult here as well */
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
|
|
if (result == GST_FLOW_EOS) {
|
|
data = gst_queue2_dequeue_on_eos (queue, &item_type);
|
|
if (data != NULL)
|
|
goto next;
|
|
/* Since we will still accept EOS and SEGMENT we return _FLOW_OK
|
|
* to the caller so that the task function does not shut down */
|
|
result = GST_FLOW_OK;
|
|
}
|
|
}
|
|
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_FLUSHING;
|
|
}
|
|
}
|
|
|
|
/* called repeatedly with @pad as the source pad. This function should push out
|
|
* data to the peer element. */
|
|
static void
|
|
gst_queue2_loop (GstPad * pad)
|
|
{
|
|
GstQueue2 *queue;
|
|
GstFlowReturn ret;
|
|
|
|
queue = GST_QUEUE2 (GST_PAD_PARENT (pad));
|
|
|
|
/* have to lock for thread-safety */
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
|
|
|
|
if (gst_queue2_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_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
|
|
}
|
|
while (gst_queue2_is_empty (queue));
|
|
|
|
/* and continue if we were running before */
|
|
if (started)
|
|
g_timer_continue (queue->out_timer);
|
|
}
|
|
ret = gst_queue2_push_one (queue);
|
|
queue->srcresult = ret;
|
|
queue->sinkresult = ret;
|
|
if (ret != GST_FLOW_OK)
|
|
goto out_flushing;
|
|
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
return;
|
|
|
|
/* ERRORS */
|
|
out_flushing:
|
|
{
|
|
gboolean eos = queue->is_eos;
|
|
GstFlowReturn ret = queue->srcresult;
|
|
|
|
gst_pad_pause_task (queue->srcpad);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
GST_CAT_LOG_OBJECT (queue_dataflow, queue,
|
|
"pause task, reason: %s", gst_flow_get_name (queue->srcresult));
|
|
/* 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_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_queue2_handle_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstQueue2 *queue = GST_QUEUE2 (parent);
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%s)",
|
|
event, GST_EVENT_TYPE_NAME (event));
|
|
#endif
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_START:
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
/* just forward upstream */
|
|
res = gst_pad_push_event (queue->sinkpad, event);
|
|
} else {
|
|
/* now unblock the getrange function */
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
GST_DEBUG_OBJECT (queue, "flushing");
|
|
queue->srcresult = GST_FLOW_FLUSHING;
|
|
GST_QUEUE2_SIGNAL_ADD (queue);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
/* when using a temp file, we eat the event */
|
|
res = TRUE;
|
|
gst_event_unref (event);
|
|
}
|
|
break;
|
|
case GST_EVENT_FLUSH_STOP:
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
/* just forward upstream */
|
|
res = gst_pad_push_event (queue->sinkpad, event);
|
|
} else {
|
|
/* now unblock the getrange function */
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
queue->srcresult = GST_FLOW_OK;
|
|
if (queue->current) {
|
|
/* forget the highest read offset, we'll calculate a new one when we
|
|
* get the next getrange request. We need to do this in order to reset
|
|
* the buffering percentage */
|
|
queue->current->max_reading_pos = 0;
|
|
}
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
/* when using a temp file, we eat the event */
|
|
res = TRUE;
|
|
gst_event_unref (event);
|
|
}
|
|
break;
|
|
default:
|
|
res = gst_pad_push_event (queue->sinkpad, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
gint64 peer_pos;
|
|
GstFormat format;
|
|
|
|
if (!gst_pad_peer_query (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_pad_peer_query (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");
|
|
|
|
/* FIXME - is this condition correct? what should ring buffer do? */
|
|
if (QUEUE_IS_USING_QUEUE (queue)) {
|
|
/* no temp file, just forward to the peer */
|
|
if (!gst_pad_peer_query (queue->sinkpad, query))
|
|
goto peer_failed;
|
|
GST_DEBUG_OBJECT (queue, "buffering forwarded to peer");
|
|
} else {
|
|
gint64 start, stop, range_start, range_stop;
|
|
guint64 writing_pos;
|
|
gint percent;
|
|
gint64 estimated_total, buffering_left;
|
|
gint64 duration;
|
|
gboolean peer_res, is_buffering, is_eos;
|
|
gdouble byte_in_rate, byte_out_rate;
|
|
GstQueue2Range *queued_ranges;
|
|
|
|
/* we need a current download region */
|
|
if (queue->current == NULL)
|
|
return FALSE;
|
|
|
|
writing_pos = queue->current->writing_pos;
|
|
byte_in_rate = queue->byte_in_rate;
|
|
byte_out_rate = queue->byte_out_rate;
|
|
is_buffering = queue->is_buffering;
|
|
is_eos = queue->is_eos;
|
|
percent = queue->buffering_percent;
|
|
|
|
if (is_eos) {
|
|
/* we're EOS, we know the duration in bytes now */
|
|
peer_res = TRUE;
|
|
duration = writing_pos;
|
|
} else {
|
|
/* get duration of upstream in bytes */
|
|
peer_res = gst_pad_peer_query_duration (queue->sinkpad,
|
|
GST_FORMAT_BYTES, &duration);
|
|
}
|
|
|
|
/* calculate remaining and total download time */
|
|
if (peer_res && byte_in_rate > 0.0) {
|
|
estimated_total = (duration * 1000) / byte_in_rate;
|
|
buffering_left = ((duration - writing_pos) * 1000) / byte_in_rate;
|
|
} else {
|
|
estimated_total = -1;
|
|
buffering_left = -1;
|
|
}
|
|
GST_DEBUG_OBJECT (queue, "estimated %" G_GINT64_FORMAT ", left %"
|
|
G_GINT64_FORMAT, estimated_total, buffering_left);
|
|
|
|
gst_query_parse_buffering_range (query, &format, NULL, NULL, NULL);
|
|
|
|
switch (format) {
|
|
case GST_FORMAT_PERCENT:
|
|
/* we need duration */
|
|
if (!peer_res)
|
|
goto peer_failed;
|
|
|
|
GST_DEBUG_OBJECT (queue,
|
|
"duration %" G_GINT64_FORMAT ", writing %" G_GINT64_FORMAT,
|
|
duration, writing_pos);
|
|
|
|
start = 0;
|
|
/* get our available data relative to the duration */
|
|
if (duration != -1)
|
|
stop = GST_FORMAT_PERCENT_MAX * writing_pos / duration;
|
|
else
|
|
stop = -1;
|
|
break;
|
|
case GST_FORMAT_BYTES:
|
|
start = 0;
|
|
stop = writing_pos;
|
|
break;
|
|
default:
|
|
start = -1;
|
|
stop = -1;
|
|
break;
|
|
}
|
|
|
|
/* fill out the buffered ranges */
|
|
for (queued_ranges = queue->ranges; queued_ranges;
|
|
queued_ranges = queued_ranges->next) {
|
|
switch (format) {
|
|
case GST_FORMAT_PERCENT:
|
|
if (duration == -1) {
|
|
range_start = 0;
|
|
range_stop = 0;
|
|
break;
|
|
}
|
|
range_start = 100 * queued_ranges->offset / duration;
|
|
range_stop = 100 * queued_ranges->writing_pos / duration;
|
|
break;
|
|
case GST_FORMAT_BYTES:
|
|
range_start = queued_ranges->offset;
|
|
range_stop = queued_ranges->writing_pos;
|
|
break;
|
|
default:
|
|
range_start = -1;
|
|
range_stop = -1;
|
|
break;
|
|
}
|
|
if (range_start == range_stop)
|
|
continue;
|
|
GST_DEBUG_OBJECT (queue,
|
|
"range starting at %" G_GINT64_FORMAT " and finishing at %"
|
|
G_GINT64_FORMAT, range_start, range_stop);
|
|
gst_query_add_buffering_range (query, range_start, range_stop);
|
|
}
|
|
|
|
gst_query_set_buffering_percent (query, is_buffering, percent);
|
|
gst_query_set_buffering_range (query, format, start, stop,
|
|
estimated_total);
|
|
gst_query_set_buffering_stats (query, GST_BUFFERING_DOWNLOAD,
|
|
byte_in_rate, byte_out_rate, buffering_left);
|
|
}
|
|
break;
|
|
}
|
|
case GST_QUERY_SCHEDULING:
|
|
{
|
|
gboolean pull_mode;
|
|
GstSchedulingFlags flags = 0;
|
|
|
|
/* we can operate in pull mode when we are using a tempfile */
|
|
pull_mode = !QUEUE_IS_USING_QUEUE (queue);
|
|
|
|
if (pull_mode)
|
|
flags |= GST_SCHEDULING_FLAG_SEEKABLE;
|
|
gst_query_set_scheduling (query, flags, 0, -1, 0);
|
|
if (pull_mode)
|
|
gst_query_add_scheduling_mode (query, GST_PAD_MODE_PULL);
|
|
gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
|
|
break;
|
|
}
|
|
default:
|
|
/* peer handled other queries */
|
|
if (!gst_pad_query_default (pad, parent, query))
|
|
goto peer_failed;
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
peer_failed:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "failed peer query");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_handle_query (GstElement * element, GstQuery * query)
|
|
{
|
|
GstQueue2 *queue = GST_QUEUE2 (element);
|
|
|
|
/* simply forward to the srcpad query function */
|
|
return gst_queue2_handle_src_query (queue->srcpad, GST_OBJECT_CAST (element),
|
|
query);
|
|
}
|
|
|
|
static void
|
|
gst_queue2_update_upstream_size (GstQueue2 * queue)
|
|
{
|
|
gint64 upstream_size = -1;
|
|
|
|
if (gst_pad_peer_query_duration (queue->sinkpad, GST_FORMAT_BYTES,
|
|
&upstream_size)) {
|
|
GST_INFO_OBJECT (queue, "upstream size: %" G_GINT64_FORMAT, upstream_size);
|
|
queue->upstream_size = upstream_size;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_queue2_get_range (GstPad * pad, GstObject * parent, guint64 offset,
|
|
guint length, GstBuffer ** buffer)
|
|
{
|
|
GstQueue2 *queue;
|
|
GstFlowReturn ret;
|
|
|
|
queue = GST_QUEUE2_CAST (parent);
|
|
|
|
length = (length == -1) ? DEFAULT_BUFFER_SIZE : length;
|
|
GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
|
|
offset = (offset == -1) ? queue->current->reading_pos : offset;
|
|
|
|
GST_DEBUG_OBJECT (queue,
|
|
"Getting range: offset %" G_GUINT64_FORMAT ", length %u", offset, length);
|
|
|
|
/* catch any reads beyond the size of the file here to make sure queue2
|
|
* doesn't send seek events beyond the size of the file upstream, since
|
|
* that would confuse elements such as souphttpsrc and/or http servers.
|
|
* Demuxers often just loop until EOS at the end of the file to figure out
|
|
* when they've read all the end-headers or index chunks. */
|
|
if (G_UNLIKELY (offset >= queue->upstream_size)) {
|
|
gst_queue2_update_upstream_size (queue);
|
|
if (queue->upstream_size > 0 && offset >= queue->upstream_size)
|
|
goto out_unexpected;
|
|
}
|
|
|
|
if (G_UNLIKELY (offset + length > queue->upstream_size)) {
|
|
gst_queue2_update_upstream_size (queue);
|
|
if (queue->upstream_size > 0 && offset + length >= queue->upstream_size) {
|
|
length = queue->upstream_size - offset;
|
|
GST_DEBUG_OBJECT (queue, "adjusting length downto %d", length);
|
|
}
|
|
}
|
|
|
|
/* FIXME - function will block when the range is not yet available */
|
|
ret = gst_queue2_create_read (queue, offset, length, buffer);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
out_flushing:
|
|
{
|
|
ret = queue->srcresult;
|
|
|
|
GST_DEBUG_OBJECT (queue, "we are flushing");
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
return ret;
|
|
}
|
|
out_unexpected:
|
|
{
|
|
GST_DEBUG_OBJECT (queue, "read beyond end of file");
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
return GST_FLOW_EOS;
|
|
}
|
|
}
|
|
|
|
/* sink currently only operates in push mode */
|
|
static gboolean
|
|
gst_queue2_sink_activate_mode (GstPad * pad, GstObject * parent,
|
|
GstPadMode mode, gboolean active)
|
|
{
|
|
gboolean result;
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PUSH:
|
|
if (active) {
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
GST_DEBUG_OBJECT (queue, "activating push mode");
|
|
queue->srcresult = GST_FLOW_OK;
|
|
queue->sinkresult = GST_FLOW_OK;
|
|
queue->is_eos = FALSE;
|
|
queue->unexpected = FALSE;
|
|
reset_rate_timer (queue);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
} else {
|
|
/* unblock chain function */
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
GST_DEBUG_OBJECT (queue, "deactivating push mode");
|
|
queue->srcresult = GST_FLOW_FLUSHING;
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
gst_queue2_locked_flush (queue);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
}
|
|
result = TRUE;
|
|
break;
|
|
default:
|
|
result = FALSE;
|
|
break;
|
|
}
|
|
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_queue2_src_activate_push (GstPad * pad, GstObject * parent, gboolean active)
|
|
{
|
|
gboolean result = FALSE;
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
if (active) {
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
GST_DEBUG_OBJECT (queue, "activating push mode");
|
|
queue->srcresult = GST_FLOW_OK;
|
|
queue->sinkresult = GST_FLOW_OK;
|
|
queue->is_eos = FALSE;
|
|
queue->unexpected = FALSE;
|
|
result = gst_pad_start_task (pad, (GstTaskFunction) gst_queue2_loop, pad);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
} else {
|
|
/* unblock loop function */
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
GST_DEBUG_OBJECT (queue, "deactivating push mode");
|
|
queue->srcresult = GST_FLOW_FLUSHING;
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
/* the item add signal will unblock */
|
|
GST_QUEUE2_SIGNAL_ADD (queue);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
|
|
/* step 2, make sure streaming finishes */
|
|
result = gst_pad_stop_task (pad);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* pull mode, downstream will call our getrange function */
|
|
static gboolean
|
|
gst_queue2_src_activate_pull (GstPad * pad, GstObject * parent, gboolean active)
|
|
{
|
|
gboolean result;
|
|
GstQueue2 *queue;
|
|
|
|
queue = GST_QUEUE2 (parent);
|
|
|
|
if (active) {
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
/* open the temp file now */
|
|
result = gst_queue2_open_temp_location_file (queue);
|
|
} else if (!queue->ring_buffer) {
|
|
queue->ring_buffer = g_malloc (queue->ring_buffer_max_size);
|
|
result = ! !queue->ring_buffer;
|
|
} else {
|
|
result = TRUE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (queue, "activating pull mode");
|
|
init_ranges (queue);
|
|
queue->srcresult = GST_FLOW_OK;
|
|
queue->sinkresult = GST_FLOW_OK;
|
|
queue->is_eos = FALSE;
|
|
queue->unexpected = FALSE;
|
|
queue->upstream_size = 0;
|
|
} else {
|
|
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_FLUSHING;
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
result = FALSE;
|
|
}
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
} else {
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
GST_DEBUG_OBJECT (queue, "deactivating pull mode");
|
|
queue->srcresult = GST_FLOW_FLUSHING;
|
|
queue->sinkresult = GST_FLOW_FLUSHING;
|
|
/* this will unlock getrange */
|
|
GST_QUEUE2_SIGNAL_ADD (queue);
|
|
result = TRUE;
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_queue2_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
|
|
gboolean active)
|
|
{
|
|
gboolean res;
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PULL:
|
|
res = gst_queue2_src_activate_pull (pad, parent, active);
|
|
break;
|
|
case GST_PAD_MODE_PUSH:
|
|
res = gst_queue2_src_activate_push (pad, parent, active);
|
|
break;
|
|
default:
|
|
GST_LOG_OBJECT (pad, "unknown activation mode %d", mode);
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_queue2_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstQueue2 *queue;
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
|
|
queue = GST_QUEUE2 (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
if (!gst_queue2_open_temp_location_file (queue))
|
|
ret = GST_STATE_CHANGE_FAILURE;
|
|
} else {
|
|
if (queue->ring_buffer) {
|
|
g_free (queue->ring_buffer);
|
|
queue->ring_buffer = NULL;
|
|
}
|
|
if (!(queue->ring_buffer = g_malloc (queue->ring_buffer_max_size)))
|
|
ret = GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
init_ranges (queue);
|
|
}
|
|
queue->segment_event_received = FALSE;
|
|
queue->starting_segment = NULL;
|
|
gst_event_replace (&queue->stream_start_event, NULL);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
GST_QUEUE2_MUTEX_LOCK (queue);
|
|
if (!QUEUE_IS_USING_QUEUE (queue)) {
|
|
if (QUEUE_IS_USING_TEMP_FILE (queue)) {
|
|
gst_queue2_close_temp_location_file (queue);
|
|
} else if (queue->ring_buffer) {
|
|
g_free (queue->ring_buffer);
|
|
queue->ring_buffer = NULL;
|
|
}
|
|
clean_ranges (queue);
|
|
}
|
|
if (queue->starting_segment != NULL) {
|
|
gst_event_unref (queue->starting_segment);
|
|
queue->starting_segment = NULL;
|
|
}
|
|
gst_event_replace (&queue->stream_start_event, NULL);
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
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)\
|
|
GST_QUEUE2_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_QUEUE2_SIGNAL_ADD (queue);
|
|
|
|
static void
|
|
gst_queue2_set_temp_template (GstQueue2 * 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_queue2_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstQueue2 *queue = GST_QUEUE2 (object);
|
|
|
|
/* someone could change levels here, and since this
|
|
* affects the get/put funcs, we need to lock for safety. */
|
|
GST_QUEUE2_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_queue2_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;
|
|
case PROP_TEMP_REMOVE:
|
|
queue->temp_remove = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_RING_BUFFER_MAX_SIZE:
|
|
queue->ring_buffer_max_size = g_value_get_uint64 (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
}
|
|
|
|
static void
|
|
gst_queue2_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstQueue2 *queue = GST_QUEUE2 (object);
|
|
|
|
GST_QUEUE2_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;
|
|
case PROP_TEMP_REMOVE:
|
|
g_value_set_boolean (value, queue->temp_remove);
|
|
break;
|
|
case PROP_RING_BUFFER_MAX_SIZE:
|
|
g_value_set_uint64 (value, queue->ring_buffer_max_size);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
GST_QUEUE2_MUTEX_UNLOCK (queue);
|
|
}
|