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gstreamer/plugins/elements/gstfakesrc.c
Wim Taymans 85c9543841 memory: group allocation parameters in a struct 
Group the extra allocation parameters in a GstAllocationParams structure to make
it easier to deal with them and so that we can extend them later if needed.
Make gst_buffer_new_allocate() take the GstAllocationParams for added
functionality.
Add boxed type for GstAllocationParams.
2012-03-15 13:42:17 +01:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim@fluendo.com>
*
* gstfakesrc.c:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-fakesrc
* @see_also: #GstFakeSink
*
* The fakesrc element is a multipurpose element that can generate
* a wide range of buffers and can operate in various scheduling modes.
*
* It is mostly used as a testing element, one trivial example for testing
* basic <application>GStreamer</application> core functionality is:
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v fakesrc num-buffers=5 ! fakesink
* ]| This pipeline will push 5 empty buffers to the fakesink element and then
* sends an EOS.
* </refsect2>
*
* Last reviewed on 2008-06-20 (0.10.21)
*/
/* FIXME: this ignores basesrc::blocksize property, which could be used as an
* alias to ::sizemax (see gst_base_src_get_blocksize()).
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include "gstfakesrc.h"
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (gst_fake_src_debug);
#define GST_CAT_DEFAULT gst_fake_src_debug
/* FakeSrc signals and args */
enum
{
/* FILL ME */
SIGNAL_HANDOFF,
LAST_SIGNAL
};
#define DEFAULT_OUTPUT FAKE_SRC_FIRST_LAST_LOOP
#define DEFAULT_DATA FAKE_SRC_DATA_ALLOCATE
#define DEFAULT_SIZETYPE FAKE_SRC_SIZETYPE_EMPTY
#define DEFAULT_SIZEMIN 0
#define DEFAULT_SIZEMAX 4096
#define DEFAULT_FILLTYPE FAKE_SRC_FILLTYPE_ZERO
#define DEFAULT_DATARATE 0
#define DEFAULT_SYNC FALSE
#define DEFAULT_PATTERN NULL
#define DEFAULT_EOS FALSE
#define DEFAULT_SIGNAL_HANDOFFS FALSE
#define DEFAULT_SILENT TRUE
#define DEFAULT_DUMP FALSE
#define DEFAULT_PARENTSIZE 4096*10
#define DEFAULT_CAN_ACTIVATE_PULL TRUE
#define DEFAULT_CAN_ACTIVATE_PUSH TRUE
#define DEFAULT_FORMAT GST_FORMAT_BYTES
enum
{
PROP_0,
PROP_OUTPUT,
PROP_DATA,
PROP_SIZETYPE,
PROP_SIZEMIN,
PROP_SIZEMAX,
PROP_FILLTYPE,
PROP_DATARATE,
PROP_SYNC,
PROP_PATTERN,
PROP_EOS,
PROP_SIGNAL_HANDOFFS,
PROP_SILENT,
PROP_DUMP,
PROP_PARENTSIZE,
PROP_LAST_MESSAGE,
PROP_CAN_ACTIVATE_PULL,
PROP_CAN_ACTIVATE_PUSH,
PROP_IS_LIVE,
PROP_FORMAT,
PROP_LAST,
};
/* not implemented
#define GST_TYPE_FAKE_SRC_OUTPUT (gst_fake_src_output_get_type())
static GType
gst_fake_src_output_get_type (void)
{
static GType fakesrc_output_type = 0;
static const GEnumValue fakesrc_output[] = {
{FAKE_SRC_FIRST_LAST_LOOP, "1", "First-Last loop"},
{FAKE_SRC_LAST_FIRST_LOOP, "2", "Last-First loop"},
{FAKE_SRC_PING_PONG, "3", "Ping-Pong"},
{FAKE_SRC_ORDERED_RANDOM, "4", "Ordered Random"},
{FAKE_SRC_RANDOM, "5", "Random"},
{FAKE_SRC_PATTERN_LOOP, "6", "Patttern loop"},
{FAKE_SRC_PING_PONG_PATTERN, "7", "Ping-Pong Pattern"},
{FAKE_SRC_GET_ALWAYS_SUCEEDS, "8", "'_get' Always succeeds"},
{0, NULL, NULL},
};
if (!fakesrc_output_type) {
fakesrc_output_type =
g_enum_register_static ("GstFakeSrcOutput", fakesrc_output);
}
return fakesrc_output_type;
}
*/
#define GST_TYPE_FAKE_SRC_DATA (gst_fake_src_data_get_type())
static GType
gst_fake_src_data_get_type (void)
{
static GType fakesrc_data_type = 0;
static const GEnumValue fakesrc_data[] = {
{FAKE_SRC_DATA_ALLOCATE, "Allocate data", "allocate"},
{FAKE_SRC_DATA_SUBBUFFER, "Subbuffer data", "subbuffer"},
{0, NULL, NULL},
};
if (!fakesrc_data_type) {
fakesrc_data_type =
g_enum_register_static ("GstFakeSrcDataType", fakesrc_data);
}
return fakesrc_data_type;
}
#define GST_TYPE_FAKE_SRC_SIZETYPE (gst_fake_src_sizetype_get_type())
static GType
gst_fake_src_sizetype_get_type (void)
{
static GType fakesrc_sizetype_type = 0;
static const GEnumValue fakesrc_sizetype[] = {
{FAKE_SRC_SIZETYPE_EMPTY, "Send empty buffers", "empty"},
{FAKE_SRC_SIZETYPE_FIXED, "Fixed size buffers (sizemax sized)", "fixed"},
{FAKE_SRC_SIZETYPE_RANDOM,
"Random sized buffers (sizemin <= size <= sizemax)", "random"},
{0, NULL, NULL},
};
if (!fakesrc_sizetype_type) {
fakesrc_sizetype_type =
g_enum_register_static ("GstFakeSrcSizeType", fakesrc_sizetype);
}
return fakesrc_sizetype_type;
}
#define GST_TYPE_FAKE_SRC_FILLTYPE (gst_fake_src_filltype_get_type())
static GType
gst_fake_src_filltype_get_type (void)
{
static GType fakesrc_filltype_type = 0;
static const GEnumValue fakesrc_filltype[] = {
{FAKE_SRC_FILLTYPE_NOTHING, "Leave data as malloced", "nothing"},
{FAKE_SRC_FILLTYPE_ZERO, "Fill buffers with zeros", "zero"},
{FAKE_SRC_FILLTYPE_RANDOM, "Fill buffers with random crap", "random"},
{FAKE_SRC_FILLTYPE_PATTERN, "Fill buffers with pattern 0x00 -> 0xff",
"pattern"},
{FAKE_SRC_FILLTYPE_PATTERN_CONT,
"Fill buffers with pattern 0x00 -> 0xff that spans buffers",
"pattern-span"},
{0, NULL, NULL},
};
if (!fakesrc_filltype_type) {
fakesrc_filltype_type =
g_enum_register_static ("GstFakeSrcFillType", fakesrc_filltype);
}
return fakesrc_filltype_type;
}
#define _do_init \
GST_DEBUG_CATEGORY_INIT (gst_fake_src_debug, "fakesrc", 0, "fakesrc element");
#define gst_fake_src_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstFakeSrc, gst_fake_src, GST_TYPE_BASE_SRC, _do_init);
static void gst_fake_src_finalize (GObject * object);
static void gst_fake_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_fake_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_fake_src_start (GstBaseSrc * basesrc);
static gboolean gst_fake_src_stop (GstBaseSrc * basesrc);
static gboolean gst_fake_src_is_seekable (GstBaseSrc * basesrc);
static gboolean gst_fake_src_event_handler (GstBaseSrc * src, GstEvent * event);
static void gst_fake_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end);
static GstFlowReturn gst_fake_src_create (GstBaseSrc * src, guint64 offset,
guint length, GstBuffer ** buf);
static guint gst_fake_src_signals[LAST_SIGNAL] = { 0 };
static GParamSpec *pspec_last_message = NULL;
static void
gst_fake_src_class_init (GstFakeSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSrcClass *gstbase_src_class;
gobject_class = G_OBJECT_CLASS (klass);
gstelement_class = GST_ELEMENT_CLASS (klass);
gstbase_src_class = GST_BASE_SRC_CLASS (klass);
gobject_class->finalize = gst_fake_src_finalize;
gobject_class->set_property = gst_fake_src_set_property;
gobject_class->get_property = gst_fake_src_get_property;
/*
FIXME: this is not implemented; would make sense once basesrc and fakesrc
support multiple pads
g_object_class_install_property (gobject_class, PROP_OUTPUT,
g_param_spec_enum ("output", "output", "Output method (currently unused)",
GST_TYPE_FAKE_SRC_OUTPUT, DEFAULT_OUTPUT, G_PARAM_READWRITE));
*/
g_object_class_install_property (gobject_class, PROP_DATA,
g_param_spec_enum ("data", "data", "Data allocation method",
GST_TYPE_FAKE_SRC_DATA, DEFAULT_DATA,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SIZETYPE,
g_param_spec_enum ("sizetype", "sizetype",
"How to determine buffer sizes", GST_TYPE_FAKE_SRC_SIZETYPE,
DEFAULT_SIZETYPE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SIZEMIN,
g_param_spec_int ("sizemin", "sizemin", "Minimum buffer size", 0,
G_MAXINT, DEFAULT_SIZEMIN,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SIZEMAX,
g_param_spec_int ("sizemax", "sizemax", "Maximum buffer size", 0,
G_MAXINT, DEFAULT_SIZEMAX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PARENTSIZE,
g_param_spec_int ("parentsize", "parentsize",
"Size of parent buffer for sub-buffered allocation", 0, G_MAXINT,
DEFAULT_PARENTSIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FILLTYPE,
g_param_spec_enum ("filltype", "filltype",
"How to fill the buffer, if at all", GST_TYPE_FAKE_SRC_FILLTYPE,
DEFAULT_FILLTYPE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DATARATE,
g_param_spec_int ("datarate", "Datarate",
"Timestamps buffers with number of bytes per second (0 = none)", 0,
G_MAXINT, DEFAULT_DATARATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SYNC,
g_param_spec_boolean ("sync", "Sync", "Sync to the clock to the datarate",
DEFAULT_SYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PATTERN,
g_param_spec_string ("pattern", "pattern", "pattern", DEFAULT_PATTERN,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
pspec_last_message = g_param_spec_string ("last-message", "last-message",
"The last status message", NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE,
pspec_last_message);
g_object_class_install_property (gobject_class, PROP_SILENT,
g_param_spec_boolean ("silent", "Silent",
"Don't produce last_message events", DEFAULT_SILENT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SIGNAL_HANDOFFS,
g_param_spec_boolean ("signal-handoffs", "Signal handoffs",
"Send a signal before pushing the buffer", DEFAULT_SIGNAL_HANDOFFS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DUMP,
g_param_spec_boolean ("dump", "Dump", "Dump buffer contents to stdout",
DEFAULT_DUMP, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CAN_ACTIVATE_PUSH,
g_param_spec_boolean ("can-activate-push", "Can activate push",
"Can activate in push mode", DEFAULT_CAN_ACTIVATE_PUSH,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CAN_ACTIVATE_PULL,
g_param_spec_boolean ("can-activate-pull", "Can activate pull",
"Can activate in pull mode", DEFAULT_CAN_ACTIVATE_PULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_IS_LIVE,
g_param_spec_boolean ("is-live", "Is this a live source",
"True if the element cannot produce data in PAUSED", FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
/**
* GstFakeSrc:format
*
* Set the format of the newsegment events to produce.
*
* Since: 0.10.20
*/
g_object_class_install_property (gobject_class, PROP_FORMAT,
g_param_spec_enum ("format", "Format",
"The format of the segment events", GST_TYPE_FORMAT,
DEFAULT_FORMAT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstFakeSrc::handoff:
* @fakesrc: the fakesrc instance
* @buffer: the buffer that will be pushed
* @pad: the pad that will sent it
*
* This signal gets emitted before sending the buffer.
*/
gst_fake_src_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstFakeSrcClass, handoff), NULL, NULL,
g_cclosure_marshal_generic, G_TYPE_NONE, 2,
GST_TYPE_BUFFER | G_SIGNAL_TYPE_STATIC_SCOPE, GST_TYPE_PAD);
gst_element_class_set_details_simple (gstelement_class,
"Fake Source",
"Source",
"Push empty (no data) buffers around",
"Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&srctemplate));
gstbase_src_class->is_seekable = GST_DEBUG_FUNCPTR (gst_fake_src_is_seekable);
gstbase_src_class->start = GST_DEBUG_FUNCPTR (gst_fake_src_start);
gstbase_src_class->stop = GST_DEBUG_FUNCPTR (gst_fake_src_stop);
gstbase_src_class->event = GST_DEBUG_FUNCPTR (gst_fake_src_event_handler);
gstbase_src_class->get_times = GST_DEBUG_FUNCPTR (gst_fake_src_get_times);
gstbase_src_class->create = GST_DEBUG_FUNCPTR (gst_fake_src_create);
}
static void
gst_fake_src_init (GstFakeSrc * fakesrc)
{
fakesrc->output = FAKE_SRC_FIRST_LAST_LOOP;
fakesrc->buffer_count = 0;
fakesrc->silent = DEFAULT_SILENT;
fakesrc->signal_handoffs = DEFAULT_SIGNAL_HANDOFFS;
fakesrc->dump = DEFAULT_DUMP;
fakesrc->pattern_byte = 0x00;
fakesrc->data = FAKE_SRC_DATA_ALLOCATE;
fakesrc->sizetype = FAKE_SRC_SIZETYPE_EMPTY;
fakesrc->filltype = FAKE_SRC_FILLTYPE_NOTHING;
fakesrc->sizemin = DEFAULT_SIZEMIN;
fakesrc->sizemax = DEFAULT_SIZEMAX;
fakesrc->parent = NULL;
fakesrc->parentsize = DEFAULT_PARENTSIZE;
fakesrc->last_message = NULL;
fakesrc->datarate = DEFAULT_DATARATE;
fakesrc->sync = DEFAULT_SYNC;
fakesrc->format = DEFAULT_FORMAT;
}
static void
gst_fake_src_finalize (GObject * object)
{
GstFakeSrc *src;
src = GST_FAKE_SRC (object);
g_free (src->last_message);
if (src->parent) {
gst_buffer_unref (src->parent);
src->parent = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_fake_src_event_handler (GstBaseSrc * basesrc, GstEvent * event)
{
GstFakeSrc *src;
src = GST_FAKE_SRC (basesrc);
if (!src->silent) {
const GstStructure *s;
const gchar *tstr;
gchar *sstr;
GST_OBJECT_LOCK (src);
g_free (src->last_message);
tstr = gst_event_type_get_name (GST_EVENT_TYPE (event));
if ((s = gst_event_get_structure (event)))
sstr = gst_structure_to_string (s);
else
sstr = g_strdup ("");
src->last_message =
g_strdup_printf ("event ******* (%s:%s) E (type: %s (%d), %s) %p",
GST_DEBUG_PAD_NAME (GST_BASE_SRC_CAST (src)->srcpad),
tstr, GST_EVENT_TYPE (event), sstr, event);
g_free (sstr);
GST_OBJECT_UNLOCK (src);
g_object_notify_by_pspec ((GObject *) src, pspec_last_message);
}
return GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
}
static void
gst_fake_src_alloc_parent (GstFakeSrc * src)
{
GstBuffer *buf;
buf = gst_buffer_new_allocate (NULL, src->parentsize, NULL);
src->parent = buf;
src->parentoffset = 0;
}
static void
gst_fake_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFakeSrc *src;
GstBaseSrc *basesrc;
src = GST_FAKE_SRC (object);
basesrc = GST_BASE_SRC (object);
switch (prop_id) {
case PROP_OUTPUT:
g_warning ("not yet implemented");
break;
case PROP_DATA:
src->data = g_value_get_enum (value);
if (src->data == FAKE_SRC_DATA_SUBBUFFER) {
if (!src->parent)
gst_fake_src_alloc_parent (src);
} else {
if (src->parent) {
gst_buffer_unref (src->parent);
src->parent = NULL;
}
}
break;
case PROP_SIZETYPE:
src->sizetype = g_value_get_enum (value);
break;
case PROP_SIZEMIN:
src->sizemin = g_value_get_int (value);
break;
case PROP_SIZEMAX:
src->sizemax = g_value_get_int (value);
break;
case PROP_PARENTSIZE:
src->parentsize = g_value_get_int (value);
break;
case PROP_FILLTYPE:
src->filltype = g_value_get_enum (value);
break;
case PROP_DATARATE:
src->datarate = g_value_get_int (value);
break;
case PROP_SYNC:
src->sync = g_value_get_boolean (value);
break;
case PROP_PATTERN:
break;
case PROP_SILENT:
src->silent = g_value_get_boolean (value);
break;
case PROP_SIGNAL_HANDOFFS:
src->signal_handoffs = g_value_get_boolean (value);
break;
case PROP_DUMP:
src->dump = g_value_get_boolean (value);
break;
case PROP_CAN_ACTIVATE_PUSH:
g_return_if_fail (!GST_OBJECT_FLAG_IS_SET (object,
GST_BASE_SRC_FLAG_STARTED));
GST_BASE_SRC (src)->can_activate_push = g_value_get_boolean (value);
break;
case PROP_CAN_ACTIVATE_PULL:
g_return_if_fail (!GST_OBJECT_FLAG_IS_SET (object,
GST_BASE_SRC_FLAG_STARTED));
src->can_activate_pull = g_value_get_boolean (value);
break;
case PROP_IS_LIVE:
gst_base_src_set_live (basesrc, g_value_get_boolean (value));
break;
case PROP_FORMAT:
src->format = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_fake_src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstFakeSrc *src;
GstBaseSrc *basesrc;
g_return_if_fail (GST_IS_FAKE_SRC (object));
src = GST_FAKE_SRC (object);
basesrc = GST_BASE_SRC (object);
switch (prop_id) {
case PROP_OUTPUT:
g_value_set_enum (value, src->output);
break;
case PROP_DATA:
g_value_set_enum (value, src->data);
break;
case PROP_SIZETYPE:
g_value_set_enum (value, src->sizetype);
break;
case PROP_SIZEMIN:
g_value_set_int (value, src->sizemin);
break;
case PROP_SIZEMAX:
g_value_set_int (value, src->sizemax);
break;
case PROP_PARENTSIZE:
g_value_set_int (value, src->parentsize);
break;
case PROP_FILLTYPE:
g_value_set_enum (value, src->filltype);
break;
case PROP_DATARATE:
g_value_set_int (value, src->datarate);
break;
case PROP_SYNC:
g_value_set_boolean (value, src->sync);
break;
case PROP_PATTERN:
g_value_set_string (value, src->pattern);
break;
case PROP_SILENT:
g_value_set_boolean (value, src->silent);
break;
case PROP_SIGNAL_HANDOFFS:
g_value_set_boolean (value, src->signal_handoffs);
break;
case PROP_DUMP:
g_value_set_boolean (value, src->dump);
break;
case PROP_LAST_MESSAGE:
GST_OBJECT_LOCK (src);
g_value_set_string (value, src->last_message);
GST_OBJECT_UNLOCK (src);
break;
case PROP_CAN_ACTIVATE_PUSH:
g_value_set_boolean (value, GST_BASE_SRC (src)->can_activate_push);
break;
case PROP_CAN_ACTIVATE_PULL:
g_value_set_boolean (value, src->can_activate_pull);
break;
case PROP_IS_LIVE:
g_value_set_boolean (value, gst_base_src_is_live (basesrc));
break;
case PROP_FORMAT:
g_value_set_enum (value, src->format);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_fake_src_prepare_buffer (GstFakeSrc * src, guint8 * data, gsize size)
{
if (size == 0)
return;
switch (src->filltype) {
case FAKE_SRC_FILLTYPE_ZERO:
memset (data, 0, size);
break;
case FAKE_SRC_FILLTYPE_RANDOM:
{
gint i;
guint8 *ptr = data;
for (i = size; i; i--) {
*ptr++ = g_random_int_range (0, 256);
}
break;
}
case FAKE_SRC_FILLTYPE_PATTERN:
src->pattern_byte = 0x00;
case FAKE_SRC_FILLTYPE_PATTERN_CONT:
{
gint i;
guint8 *ptr = data;
for (i = size; i; i--) {
*ptr++ = src->pattern_byte++;
}
break;
}
case FAKE_SRC_FILLTYPE_NOTHING:
default:
break;
}
}
static GstBuffer *
gst_fake_src_alloc_buffer (GstFakeSrc * src, guint size)
{
GstBuffer *buf;
gpointer data;
gboolean do_prepare = FALSE;
buf = gst_buffer_new ();
if (size != 0) {
switch (src->filltype) {
case FAKE_SRC_FILLTYPE_NOTHING:
data = g_malloc (size);
break;
case FAKE_SRC_FILLTYPE_ZERO:
data = g_malloc0 (size);
break;
case FAKE_SRC_FILLTYPE_RANDOM:
case FAKE_SRC_FILLTYPE_PATTERN:
case FAKE_SRC_FILLTYPE_PATTERN_CONT:
default:
data = g_malloc (size);
do_prepare = TRUE;
break;
}
if (do_prepare)
gst_fake_src_prepare_buffer (src, data, size);
gst_buffer_take_memory (buf, -1,
gst_memory_new_wrapped (0, data, size, 0, size, data, g_free));
}
return buf;
}
static guint
gst_fake_src_get_size (GstFakeSrc * src)
{
guint size;
switch (src->sizetype) {
case FAKE_SRC_SIZETYPE_FIXED:
size = src->sizemax;
break;
case FAKE_SRC_SIZETYPE_RANDOM:
size = g_random_int_range (src->sizemin, src->sizemax);
break;
case FAKE_SRC_SIZETYPE_EMPTY:
default:
size = 0;
break;
}
return size;
}
static GstBuffer *
gst_fake_src_create_buffer (GstFakeSrc * src, gsize * bufsize)
{
GstBuffer *buf;
gsize size = gst_fake_src_get_size (src);
gboolean dump = src->dump;
GstMapInfo info;
*bufsize = size;
switch (src->data) {
case FAKE_SRC_DATA_ALLOCATE:
buf = gst_fake_src_alloc_buffer (src, size);
break;
case FAKE_SRC_DATA_SUBBUFFER:
/* see if we have a parent to subbuffer */
if (!src->parent) {
gst_fake_src_alloc_parent (src);
g_assert (src->parent);
}
/* see if it's large enough */
if ((src->parentsize - src->parentoffset) >= size) {
buf =
gst_buffer_copy_region (src->parent, GST_BUFFER_COPY_ALL,
src->parentoffset, size);
src->parentoffset += size;
} else {
/* the parent is useless now */
gst_buffer_unref (src->parent);
src->parent = NULL;
/* try again (this will allocate a new parent) */
return gst_fake_src_create_buffer (src, bufsize);
}
gst_buffer_map (buf, &info, GST_MAP_WRITE);
gst_fake_src_prepare_buffer (src, info.data, info.size);
gst_buffer_unmap (buf, &info);
break;
default:
g_warning ("fakesrc: dunno how to allocate buffers !");
buf = gst_buffer_new ();
break;
}
if (dump) {
gst_buffer_map (buf, &info, GST_MAP_READ);
gst_util_dump_mem (info.data, info.size);
gst_buffer_unmap (buf, &info);
}
return buf;
}
static void
gst_fake_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
GstFakeSrc *src;
src = GST_FAKE_SRC (basesrc);
/* sync on the timestamp of the buffer if requested. */
if (src->sync) {
GstClockTime timestamp, duration;
/* first sync on DTS, else use PTS */
timestamp = GST_BUFFER_DTS (buffer);
if (!GST_CLOCK_TIME_IS_VALID (timestamp))
timestamp = GST_BUFFER_PTS (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* get duration to calculate end time */
duration = GST_BUFFER_DURATION (buffer);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
*end = timestamp + duration;
}
*start = timestamp;
}
} else {
*start = -1;
*end = -1;
}
}
static GstFlowReturn
gst_fake_src_create (GstBaseSrc * basesrc, guint64 offset, guint length,
GstBuffer ** ret)
{
GstFakeSrc *src;
GstBuffer *buf;
GstClockTime time;
gsize size;
src = GST_FAKE_SRC (basesrc);
buf = gst_fake_src_create_buffer (src, &size);
GST_BUFFER_OFFSET (buf) = src->buffer_count++;
if (src->datarate > 0) {
time = (src->bytes_sent * GST_SECOND) / src->datarate;
GST_BUFFER_DURATION (buf) = size * GST_SECOND / src->datarate;
} else if (gst_base_src_is_live (basesrc)) {
GstClock *clock;
clock = gst_element_get_clock (GST_ELEMENT (src));
if (clock) {
time = gst_clock_get_time (clock);
time -= gst_element_get_base_time (GST_ELEMENT (src));
gst_object_unref (clock);
} else {
/* not an error not to have a clock */
time = GST_CLOCK_TIME_NONE;
}
} else {
time = GST_CLOCK_TIME_NONE;
}
GST_BUFFER_DTS (buf) = time;
GST_BUFFER_PTS (buf) = time;
if (!src->silent) {
gchar dts_str[64], pts_str[64], dur_str[64];
gchar flag_str[100];
GST_OBJECT_LOCK (src);
g_free (src->last_message);
if (GST_BUFFER_DTS (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (dts_str, sizeof (dts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DTS (buf)));
} else {
g_strlcpy (dts_str, "none", sizeof (dts_str));
}
if (GST_BUFFER_PTS (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (pts_str, sizeof (pts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (buf)));
} else {
g_strlcpy (pts_str, "none", sizeof (pts_str));
}
if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
} else {
g_strlcpy (dur_str, "none", sizeof (dur_str));
}
{
const char *flag_list[15] = {
"", "", "", "", "live", "decode-only", "discont", "resync", "corrupted",
"marker", "header", "gap", "droppable", "delta-unit", "in-caps"
};
int i;
char *end = flag_str;
end[0] = '\0';
for (i = 0; i < G_N_ELEMENTS (flag_list); i++) {
if (GST_MINI_OBJECT_CAST (buf)->flags & (1 << i)) {
strcpy (end, flag_list[i]);
end += strlen (end);
end[0] = ' ';
end[1] = '\0';
end++;
}
}
}
src->last_message =
g_strdup_printf ("create ******* (%s:%s) (%u bytes, dts: %s, pts:%s"
", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %"
G_GINT64_FORMAT ", flags: %d %s) %p",
GST_DEBUG_PAD_NAME (GST_BASE_SRC_CAST (src)->srcpad), (guint) size,
dts_str, pts_str, dur_str, GST_BUFFER_OFFSET (buf),
GST_BUFFER_OFFSET_END (buf), GST_MINI_OBJECT_CAST (buf)->flags,
flag_str, buf);
GST_OBJECT_UNLOCK (src);
g_object_notify_by_pspec ((GObject *) src, pspec_last_message);
}
if (src->signal_handoffs) {
GST_LOG_OBJECT (src, "pre handoff emit");
g_signal_emit (src, gst_fake_src_signals[SIGNAL_HANDOFF], 0, buf,
basesrc->srcpad);
GST_LOG_OBJECT (src, "post handoff emit");
}
src->bytes_sent += size;
*ret = buf;
return GST_FLOW_OK;
}
static gboolean
gst_fake_src_start (GstBaseSrc * basesrc)
{
GstFakeSrc *src;
src = GST_FAKE_SRC (basesrc);
src->buffer_count = 0;
src->pattern_byte = 0x00;
src->bytes_sent = 0;
gst_base_src_set_format (basesrc, src->format);
return TRUE;
}
static gboolean
gst_fake_src_stop (GstBaseSrc * basesrc)
{
GstFakeSrc *src;
src = GST_FAKE_SRC (basesrc);
GST_OBJECT_LOCK (src);
if (src->parent) {
gst_buffer_unref (src->parent);
src->parent = NULL;
}
g_free (src->last_message);
src->last_message = NULL;
GST_OBJECT_UNLOCK (src);
return TRUE;
}
static gboolean
gst_fake_src_is_seekable (GstBaseSrc * basesrc)
{
GstFakeSrc *src = GST_FAKE_SRC (basesrc);
return src->can_activate_pull;
}
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