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gstreamer/gst/elements/gstfakesrc.c
Ramon Garcia Fernandez 4c4ff33d1f Trying to fix the mess that I made with the two previous commits. 
Original commit message from CVS:


Trying to fix the mess that I made with the two previous commits.

First commit, doing something wrong (fixing comparisons of signed and unsigned).
Second commit, trying to revert the previous, but changing other things and
reverting unrelated work of other people.
And this third, hopefully fixes it.
2004-02-07 15:51:39 +00:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* 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.
*/
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstfakesrc.h"
#include <gst/gstmarshal.h>
#define DEFAULT_SIZEMIN 0
#define DEFAULT_SIZEMAX 4096
#define DEFAULT_PARENTSIZE 4096*10
GST_DEBUG_CATEGORY_STATIC (gst_fakesrc_debug);
#define GST_CAT_DEFAULT gst_fakesrc_debug
GstElementDetails gst_fakesrc_details = GST_ELEMENT_DETAILS (
"Fake Source",
"Source",
"Push empty (no data) buffers around",
"Erik Walthinsen <omega@cse.ogi.edu>, "
"Wim Taymans <wim.taymans@chello.be>"
);
/* FakeSrc signals and args */
enum {
/* FILL ME */
SIGNAL_HANDOFF,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_NUM_SOURCES,
ARG_LOOP_BASED,
ARG_OUTPUT,
ARG_DATA,
ARG_SIZETYPE,
ARG_SIZEMIN,
ARG_SIZEMAX,
ARG_FILLTYPE,
ARG_PATTERN,
ARG_NUM_BUFFERS,
ARG_EOS,
ARG_SIGNAL_HANDOFFS,
ARG_SILENT,
ARG_DUMP,
ARG_PARENTSIZE,
ARG_LAST_MESSAGE,
};
GstStaticPadTemplate fakesrc_src_template = GST_STATIC_PAD_TEMPLATE (
"src%d",
GST_PAD_SRC,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY
);
#define GST_TYPE_FAKESRC_OUTPUT (gst_fakesrc_output_get_type())
static GType
gst_fakesrc_output_get_type (void)
{
static GType fakesrc_output_type = 0;
static GEnumValue fakesrc_output[] = {
{ FAKESRC_FIRST_LAST_LOOP, "1", "First-Last loop"},
{ FAKESRC_LAST_FIRST_LOOP, "2", "Last-First loop"},
{ FAKESRC_PING_PONG, "3", "Ping-Pong"},
{ FAKESRC_ORDERED_RANDOM, "4", "Ordered Random"},
{ FAKESRC_RANDOM, "5", "Random"},
{ FAKESRC_PATTERN_LOOP, "6", "Patttern loop"},
{ FAKESRC_PING_PONG_PATTERN, "7", "Ping-Pong Pattern"},
{ FAKESRC_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_FAKESRC_DATA (gst_fakesrc_data_get_type())
static GType
gst_fakesrc_data_get_type (void)
{
static GType fakesrc_data_type = 0;
static GEnumValue fakesrc_data[] = {
{ FAKESRC_DATA_ALLOCATE, "1", "Allocate data"},
{ FAKESRC_DATA_SUBBUFFER, "2", "Subbuffer data"},
{0, NULL, NULL},
};
if (!fakesrc_data_type) {
fakesrc_data_type = g_enum_register_static ("GstFakeSrcData", fakesrc_data);
}
return fakesrc_data_type;
}
#define GST_TYPE_FAKESRC_SIZETYPE (gst_fakesrc_sizetype_get_type())
static GType
gst_fakesrc_sizetype_get_type (void)
{
static GType fakesrc_sizetype_type = 0;
static GEnumValue fakesrc_sizetype[] = {
{ FAKESRC_SIZETYPE_NULL, "1", "Send empty buffers"},
{ FAKESRC_SIZETYPE_FIXED, "2", "Fixed size buffers (sizemax sized)"},
{ FAKESRC_SIZETYPE_RANDOM, "3", "Random sized buffers (sizemin <= size <= sizemax)"},
{0, NULL, NULL},
};
if (!fakesrc_sizetype_type) {
fakesrc_sizetype_type = g_enum_register_static ("GstFakeSrcSizeType", fakesrc_sizetype);
}
return fakesrc_sizetype_type;
}
#define GST_TYPE_FAKESRC_FILLTYPE (gst_fakesrc_filltype_get_type())
static GType
gst_fakesrc_filltype_get_type (void)
{
static GType fakesrc_filltype_type = 0;
static GEnumValue fakesrc_filltype[] = {
{ FAKESRC_FILLTYPE_NOTHING, "1", "Leave data as malloced"},
{ FAKESRC_FILLTYPE_NULL, "2", "Fill buffers with zeros"},
{ FAKESRC_FILLTYPE_RANDOM, "3", "Fill buffers with random crap"},
{ FAKESRC_FILLTYPE_PATTERN, "4", "Fill buffers with pattern 0x00 -> 0xff"},
{ FAKESRC_FILLTYPE_PATTERN_CONT, "5", "Fill buffers with pattern 0x00 -> 0xff that spans buffers"},
{0, NULL, NULL},
};
if (!fakesrc_filltype_type) {
fakesrc_filltype_type = g_enum_register_static ("GstFakeSrcFillType", fakesrc_filltype);
}
return fakesrc_filltype_type;
}
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_fakesrc_debug, "fakesrc", 0, "fakesrc element");
GST_BOILERPLATE_FULL (GstFakeSrc, gst_fakesrc, GstElement, GST_TYPE_ELEMENT, _do_init);
static GstPad* gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ,const gchar *unused);
static void gst_fakesrc_update_functions (GstFakeSrc *src);
static void gst_fakesrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_fakesrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_fakesrc_change_state (GstElement *element);
static GstData* gst_fakesrc_get (GstPad *pad);
static void gst_fakesrc_loop (GstElement *element);
static guint gst_fakesrc_signals[LAST_SIGNAL] = { 0 };
static void
gst_fakesrc_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (gstelement_class, &gst_fakesrc_details);
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&fakesrc_src_template));
}
static void
gst_fakesrc_class_init (GstFakeSrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_SOURCES,
g_param_spec_int ("num-sources", "num-sources", "Number of sources",
1, G_MAXINT, 1, G_PARAM_READABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOOP_BASED,
g_param_spec_boolean ("loop-based", "loop-based", "Enable loop-based operation",
FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_OUTPUT,
g_param_spec_enum ("output", "output", "Output method (currently unused)",
GST_TYPE_FAKESRC_OUTPUT, FAKESRC_FIRST_LAST_LOOP, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DATA,
g_param_spec_enum ("data", "data", "Data allocation method",
GST_TYPE_FAKESRC_DATA, FAKESRC_DATA_ALLOCATE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIZETYPE,
g_param_spec_enum ("sizetype", "sizetype", "How to determine buffer sizes",
GST_TYPE_FAKESRC_SIZETYPE, FAKESRC_SIZETYPE_NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIZEMIN,
g_param_spec_int ("sizemin","sizemin","Minimum buffer size",
0, G_MAXINT, DEFAULT_SIZEMIN, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIZEMAX,
g_param_spec_int ("sizemax","sizemax","Maximum buffer size",
0, G_MAXINT, DEFAULT_SIZEMAX, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PARENTSIZE,
g_param_spec_int ("parentsize","parentsize","Size of parent buffer for sub-buffered allocation",
0, G_MAXINT, DEFAULT_PARENTSIZE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FILLTYPE,
g_param_spec_enum ("filltype", "filltype", "How to fill the buffer, if at all",
GST_TYPE_FAKESRC_FILLTYPE, FAKESRC_FILLTYPE_NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PATTERN,
g_param_spec_string ("pattern", "pattern", "pattern",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_BUFFERS,
g_param_spec_int ("num-buffers", "num-buffers", "Number of buffers to output before sending EOS",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EOS,
g_param_spec_boolean ("eos", "eos", "Send out the EOS event?",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LAST_MESSAGE,
g_param_spec_string ("last-message", "last-message", "The last status message",
NULL, G_PARAM_READABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
g_param_spec_boolean ("silent", "Silent", "Don't produce last_message events",
FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SIGNAL_HANDOFFS,
g_param_spec_boolean ("signal-handoffs", "Signal handoffs", "Send a signal before pushing the buffer",
FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUMP,
g_param_spec_boolean ("dump", "Dump", "Dump produced bytes to stdout",
FALSE, G_PARAM_READWRITE));
gst_fakesrc_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstFakeSrcClass, handoff), NULL, NULL,
gst_marshal_VOID__POINTER_OBJECT, G_TYPE_NONE, 2,
GST_TYPE_BUFFER, GST_TYPE_PAD);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_fakesrc_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_fakesrc_get_property);
gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_fakesrc_request_new_pad);
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_fakesrc_change_state);
}
static void
gst_fakesrc_init (GstFakeSrc *fakesrc)
{
GstPad *pad;
/* create our first output pad */
pad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (fakesrc), pad);
fakesrc->loop_based = FALSE;
gst_fakesrc_update_functions (fakesrc);
fakesrc->output = FAKESRC_FIRST_LAST_LOOP;
fakesrc->segment_start = -1;
fakesrc->segment_end = -1;
fakesrc->num_buffers = -1;
fakesrc->rt_num_buffers = -1;
fakesrc->buffer_count = 0;
fakesrc->silent = FALSE;
fakesrc->signal_handoffs = FALSE;
fakesrc->dump = FALSE;
fakesrc->pattern_byte = 0x00;
fakesrc->need_flush = FALSE;
fakesrc->data = FAKESRC_DATA_ALLOCATE;
fakesrc->sizetype = FAKESRC_SIZETYPE_NULL;
fakesrc->filltype = FAKESRC_FILLTYPE_NOTHING;
fakesrc->sizemin = DEFAULT_SIZEMIN;
fakesrc->sizemax = DEFAULT_SIZEMAX;
fakesrc->parent = NULL;
fakesrc->parentsize = DEFAULT_PARENTSIZE;
fakesrc->last_message = NULL;
}
static GstPad*
gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar *unused)
{
gchar *name;
GstPad *srcpad;
GstFakeSrc *fakesrc;
g_return_val_if_fail (GST_IS_FAKESRC (element), NULL);
if (templ->direction != GST_PAD_SRC) {
g_warning ("gstfakesrc: request new pad that is not a SRC pad\n");
return NULL;
}
fakesrc = GST_FAKESRC (element);
name = g_strdup_printf ("src%d", GST_ELEMENT (fakesrc)->numsrcpads);
srcpad = gst_pad_new_from_template (templ, name);
gst_element_add_pad (GST_ELEMENT (fakesrc), srcpad);
gst_fakesrc_update_functions (fakesrc);
g_free (name);
return srcpad;
}
static const GstFormat *
gst_fakesrc_get_formats (GstPad *pad)
{
static const GstFormat formats[] = {
GST_FORMAT_DEFAULT,
0,
};
return formats;
}
static const GstQueryType *
gst_fakesrc_get_query_types (GstPad *pad)
{
static const GstQueryType types[] = {
GST_QUERY_TOTAL,
GST_QUERY_POSITION,
GST_QUERY_START,
GST_QUERY_SEGMENT_END,
0,
};
return types;
}
static gboolean
gst_fakesrc_query (GstPad *pad, GstQueryType type,
GstFormat *format, gint64 *value)
{
GstFakeSrc *src = GST_FAKESRC (GST_PAD_PARENT (pad));
switch (type) {
case GST_QUERY_TOTAL:
*value = src->num_buffers;
break;
case GST_QUERY_POSITION:
*value = src->buffer_count;
break;
case GST_QUERY_START:
*value = src->segment_start;
break;
case GST_QUERY_SEGMENT_END:
*value = src->segment_end;
break;
default:
return FALSE;
}
return TRUE;
}
static const GstEventMask *
gst_fakesrc_get_event_mask (GstPad *pad)
{
static const GstEventMask masks[] = {
{ GST_EVENT_SEEK, GST_SEEK_FLAG_FLUSH },
{ GST_EVENT_SEEK_SEGMENT, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT_LOOP },
{ GST_EVENT_FLUSH, 0 },
{ 0, 0 },
};
return masks;
}
static gboolean
gst_fakesrc_event_handler (GstPad *pad, GstEvent *event)
{
GstFakeSrc *src;
src = GST_FAKESRC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
src->buffer_count = GST_EVENT_SEEK_OFFSET (event);
if (!GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) {
break;
}
/* else we do a flush too */
case GST_EVENT_SEEK_SEGMENT:
src->segment_start = GST_EVENT_SEEK_OFFSET (event);
src->segment_end = GST_EVENT_SEEK_ENDOFFSET (event);
src->buffer_count = src->segment_start;
src->segment_loop = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_SEGMENT_LOOP;
break;
case GST_EVENT_FLUSH:
src->need_flush = TRUE;
break;
default:
break;
}
gst_event_unref (event);
return TRUE;
}
static void
gst_fakesrc_update_functions (GstFakeSrc *src)
{
GList *pads;
if (src->loop_based) {
gst_element_set_loop_function (GST_ELEMENT (src), GST_DEBUG_FUNCPTR (gst_fakesrc_loop));
}
else {
gst_element_set_loop_function (GST_ELEMENT (src), NULL);
}
pads = GST_ELEMENT (src)->pads;
while (pads) {
GstPad *pad = GST_PAD (pads->data);
if (src->loop_based) {
gst_pad_set_get_function (pad, NULL);
}
else {
gst_pad_set_get_function (pad, GST_DEBUG_FUNCPTR (gst_fakesrc_get));
}
gst_pad_set_event_function (pad, gst_fakesrc_event_handler);
gst_pad_set_event_mask_function (pad, gst_fakesrc_get_event_mask);
gst_pad_set_query_function (pad, gst_fakesrc_query);
gst_pad_set_query_type_function (pad, gst_fakesrc_get_query_types);
gst_pad_set_formats_function (pad, gst_fakesrc_get_formats);
pads = g_list_next (pads);
}
}
static void
gst_fakesrc_alloc_parent (GstFakeSrc *src)
{
GstBuffer *buf;
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = g_malloc (src->parentsize);
GST_BUFFER_SIZE (buf) = src->parentsize;
src->parent = buf;
src->parentoffset = 0;
}
static void
gst_fakesrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstFakeSrc *src;
/* it's not null if we got it, but it might not be ours */
src = GST_FAKESRC (object);
switch (prop_id) {
case ARG_LOOP_BASED:
src->loop_based = g_value_get_boolean (value);
gst_fakesrc_update_functions (src);
break;
case ARG_OUTPUT:
g_warning ("not yet implemented");
break;
case ARG_DATA:
src->data = g_value_get_enum (value);
if (src->data == FAKESRC_DATA_SUBBUFFER) {
if (!src->parent)
gst_fakesrc_alloc_parent (src);
} else {
if (src->parent) {
gst_buffer_unref (src->parent);
src->parent = NULL;
}
}
break;
case ARG_SIZETYPE:
src->sizetype = g_value_get_enum (value);
break;
case ARG_SIZEMIN:
src->sizemin = g_value_get_int (value);
break;
case ARG_SIZEMAX:
src->sizemax = g_value_get_int (value);
break;
case ARG_PARENTSIZE:
src->parentsize = g_value_get_int (value);
break;
case ARG_FILLTYPE:
src->filltype = g_value_get_enum (value);
break;
case ARG_PATTERN:
break;
case ARG_NUM_BUFFERS:
src->num_buffers = g_value_get_int (value);
break;
case ARG_EOS:
src->eos = g_value_get_boolean (value);
GST_INFO ( "will EOS on next buffer");
break;
case ARG_SILENT:
src->silent = g_value_get_boolean (value);
break;
case ARG_SIGNAL_HANDOFFS:
src->signal_handoffs = g_value_get_boolean (value);
break;
case ARG_DUMP:
src->dump = g_value_get_boolean (value);
break;
default:
break;
}
}
static void
gst_fakesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstFakeSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FAKESRC (object));
src = GST_FAKESRC (object);
switch (prop_id) {
case ARG_NUM_SOURCES:
g_value_set_int (value, GST_ELEMENT (src)->numsrcpads);
break;
case ARG_LOOP_BASED:
g_value_set_boolean (value, src->loop_based);
break;
case ARG_OUTPUT:
g_value_set_enum (value, src->output);
break;
case ARG_DATA:
g_value_set_enum (value, src->data);
break;
case ARG_SIZETYPE:
g_value_set_enum (value, src->sizetype);
break;
case ARG_SIZEMIN:
g_value_set_int (value, src->sizemin);
break;
case ARG_SIZEMAX:
g_value_set_int (value, src->sizemax);
break;
case ARG_PARENTSIZE:
g_value_set_int (value, src->parentsize);
break;
case ARG_FILLTYPE:
g_value_set_enum (value, src->filltype);
break;
case ARG_PATTERN:
g_value_set_string (value, src->pattern);
break;
case ARG_NUM_BUFFERS:
g_value_set_int (value, src->num_buffers);
break;
case ARG_EOS:
g_value_set_boolean (value, src->eos);
break;
case ARG_SILENT:
g_value_set_boolean (value, src->silent);
break;
case ARG_SIGNAL_HANDOFFS:
g_value_set_boolean (value, src->signal_handoffs);
break;
case ARG_DUMP:
g_value_set_boolean (value, src->dump);
break;
case ARG_LAST_MESSAGE:
g_value_set_string (value, src->last_message);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_fakesrc_prepare_buffer (GstFakeSrc *src, GstBuffer *buf)
{
if (GST_BUFFER_SIZE (buf) == 0)
return;
switch (src->filltype) {
case FAKESRC_FILLTYPE_NULL:
memset (GST_BUFFER_DATA (buf), 0, GST_BUFFER_SIZE (buf));
break;
case FAKESRC_FILLTYPE_RANDOM:
{
gint i;
guint8 *ptr = GST_BUFFER_DATA (buf);
for (i = GST_BUFFER_SIZE (buf); i; i--) {
*ptr++ = (gint8)((255.0)*rand()/(RAND_MAX));
}
break;
}
case FAKESRC_FILLTYPE_PATTERN:
src->pattern_byte = 0x00;
case FAKESRC_FILLTYPE_PATTERN_CONT:
{
gint i;
guint8 *ptr = GST_BUFFER_DATA (buf);
for (i = GST_BUFFER_SIZE (buf); i; i--) {
*ptr++ = src->pattern_byte++;
}
break;
}
case FAKESRC_FILLTYPE_NOTHING:
default:
break;
}
}
static GstBuffer*
gst_fakesrc_alloc_buffer (GstFakeSrc *src, guint size)
{
GstBuffer *buf;
buf = gst_buffer_new ();
GST_BUFFER_SIZE(buf) = size;
if (size != 0) {
switch (src->filltype) {
case FAKESRC_FILLTYPE_NOTHING:
GST_BUFFER_DATA(buf) = g_malloc (size);
break;
case FAKESRC_FILLTYPE_NULL:
GST_BUFFER_DATA(buf) = g_malloc0 (size);
break;
case FAKESRC_FILLTYPE_RANDOM:
case FAKESRC_FILLTYPE_PATTERN:
case FAKESRC_FILLTYPE_PATTERN_CONT:
default:
GST_BUFFER_DATA(buf) = g_malloc (size);
gst_fakesrc_prepare_buffer (src, buf);
break;
}
}
return buf;
}
static guint
gst_fakesrc_get_size (GstFakeSrc *src)
{
guint size;
switch (src->sizetype) {
case FAKESRC_SIZETYPE_FIXED:
size = src->sizemax;
break;
case FAKESRC_SIZETYPE_RANDOM:
size = src->sizemin + (guint8)(((gfloat)src->sizemax)*rand()/(RAND_MAX + (gfloat)src->sizemin));
break;
case FAKESRC_SIZETYPE_NULL:
default:
size = 0;
break;
}
return size;
}
static GstBuffer *
gst_fakesrc_create_buffer (GstFakeSrc *src)
{
GstBuffer *buf;
guint size;
gboolean dump = src->dump;
size = gst_fakesrc_get_size (src);
if (size == 0)
return gst_buffer_new();
switch (src->data) {
case FAKESRC_DATA_ALLOCATE:
buf = gst_fakesrc_alloc_buffer (src, size);
break;
case FAKESRC_DATA_SUBBUFFER:
/* see if we have a parent to subbuffer */
if (!src->parent) {
gst_fakesrc_alloc_parent (src);
g_assert (src->parent);
}
/* see if it's large enough */
if ((GST_BUFFER_SIZE (src->parent) - src->parentoffset) >= size) {
buf = gst_buffer_create_sub (src->parent, 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_fakesrc_create_buffer (src);
}
gst_fakesrc_prepare_buffer (src, buf);
break;
default:
g_warning ("fakesrc: dunno how to allocate buffers !");
buf = gst_buffer_new();
break;
}
if (dump) {
gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
}
return buf;
}
static GstData *
gst_fakesrc_get(GstPad *pad)
{
GstFakeSrc *src;
GstBuffer *buf;
g_return_val_if_fail (pad != NULL, NULL);
src = GST_FAKESRC (GST_OBJECT_PARENT (pad));
g_return_val_if_fail (GST_IS_FAKESRC (src), NULL);
if (src->need_flush) {
src->need_flush = FALSE;
return GST_DATA(gst_event_new (GST_EVENT_FLUSH));
}
if (src->buffer_count == src->segment_end) {
if (src->segment_loop) {
return GST_DATA(gst_event_new (GST_EVENT_SEGMENT_DONE));
}
else {
gst_element_set_eos (GST_ELEMENT (src));
return GST_DATA(gst_event_new (GST_EVENT_EOS));
}
}
if (src->rt_num_buffers == 0) {
gst_element_set_eos (GST_ELEMENT (src));
return GST_DATA(gst_event_new (GST_EVENT_EOS));
}
else {
if (src->rt_num_buffers > 0)
src->rt_num_buffers--;
}
if (src->eos) {
GST_INFO ( "fakesrc is setting eos on pad");
return GST_DATA(gst_event_new (GST_EVENT_EOS));
}
buf = gst_fakesrc_create_buffer (src);
GST_BUFFER_TIMESTAMP (buf) = src->buffer_count++;
if (!src->silent) {
g_free (src->last_message);
src->last_message = g_strdup_printf ("get ******* (%s:%s)> (%d bytes, %"
G_GUINT64_FORMAT " ) %p",
GST_DEBUG_PAD_NAME (pad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf), buf);
g_object_notify (G_OBJECT (src), "last_message");
}
if (src->signal_handoffs) {
GST_LOG_OBJECT (src, "pre handoff emit");
g_signal_emit (G_OBJECT (src), gst_fakesrc_signals[SIGNAL_HANDOFF], 0,
buf, pad);
GST_LOG_OBJECT (src, "post handoff emit");
}
return GST_DATA (buf);
}
/**
* gst_fakesrc_loop:
* @element: the faksesrc to loop
*
* generate an empty buffer and push it to the next element.
*/
static void
gst_fakesrc_loop(GstElement *element)
{
GstFakeSrc *src;
const GList *pads;
g_return_if_fail(element != NULL);
g_return_if_fail(GST_IS_FAKESRC(element));
src = GST_FAKESRC (element);
pads = gst_element_get_pad_list (element);
while (pads) {
GstPad *pad = GST_PAD (pads->data);
GstData *data;
data = gst_fakesrc_get (pad);
gst_pad_push (pad, data);
if (src->eos) {
return;
}
pads = g_list_next (pads);
}
}
static GstElementStateReturn
gst_fakesrc_change_state (GstElement *element)
{
GstFakeSrc *fakesrc;
g_return_val_if_fail (GST_IS_FAKESRC (element), GST_STATE_FAILURE);
fakesrc = GST_FAKESRC (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
fakesrc->buffer_count = 0;
fakesrc->pattern_byte = 0x00;
fakesrc->need_flush = FALSE;
fakesrc->eos = FALSE;
fakesrc->rt_num_buffers = fakesrc->num_buffers;
break;
case GST_STATE_PAUSED_TO_PLAYING:
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
if (fakesrc->parent) {
gst_buffer_unref (fakesrc->parent);
fakesrc->parent = NULL;
}
g_free (fakesrc->last_message);
fakesrc->last_message = NULL;
break;
case GST_STATE_READY_TO_NULL:
break;
default:
g_assert_not_reached ();
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
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