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Added code for sending an event to a pad.

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Original commit message from CVS:
Added code for sending an event to a pad.
Added code to handle the event in fakesrc and fakesink.
This commit is contained in:
Wim Taymans 2001-10-06 14:41:20 +00:00
parent 0fc739a48f
commit 9b7b1794bc
10 changed files with 178 additions and 60 deletions
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28
gst/elements/gstfakesink.c
View file

@ -67,7 +67,6 @@ static void gst_fakesink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static void gst_fakesink_chain (GstPad *pad, GstBuffer *buf);
static gboolean gst_fakesink_event (GstPad *pad, GstEventType event, guint64 timestamp, guint32 data);
static GstElementClass *parent_class = NULL;
static guint gst_fakesink_signals[LAST_SIGNAL] = { 0 };
@ -130,7 +129,6 @@ gst_fakesink_init (GstFakeSink *fakesink)
pad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (fakesink), pad);
gst_pad_set_chain_function (pad, GST_DEBUG_FUNCPTR (gst_fakesink_chain));
gst_pad_set_event_function (pad, GST_DEBUG_FUNCPTR (gst_fakesink_event));
fakesink->sinkpads = g_slist_prepend (NULL, pad);
fakesink->numsinkpads = 1;
@ -224,8 +222,18 @@ gst_fakesink_chain (GstPad *pad, GstBuffer *buf)
fakesink = GST_FAKESINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT(buf)) {
g_print("fakesink: have event!\n");
gst_element_set_state (GST_ELEMENT (fakesink), GST_STATE_PAUSED);
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
g_print("fakesink: have EOS event!\n");
gst_element_set_state (GST_ELEMENT (fakesink), GST_STATE_PAUSED);
break;
default:
g_print("fakesink: have unhandled event!\n");
break;
}
gst_event_free (event);
return;
}
@ -245,15 +253,3 @@ gst_fakesink_factory_init (GstElementFactory *factory)
return TRUE;
}
static gboolean
gst_fakesink_event (GstPad *pad, GstEventType event, guint64 timestamp, guint32 data)
{
GST_DEBUG (GST_CAT_EVENT, "fakesink has event %d on pad %s:%s\n",event,GST_DEBUG_PAD_NAME(pad));
if (event == GST_EVENT_EOS) {
GST_DEBUG(GST_CAT_EVENT, "have EOS\n");
}
return FALSE;
}

52
gst/elements/gstfakesrc.c
View file

@ -86,6 +86,7 @@ static void gst_fakesrc_class_init (GstFakeSrcClass *klass);
static void gst_fakesrc_init (GstFakeSrc *fakesrc);
static GstPad* gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ);
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);
@ -176,17 +177,12 @@ gst_fakesrc_init (GstFakeSrc *fakesrc)
fakesrc->srcpads = g_slist_append (NULL, pad);
fakesrc->loop_based = FALSE;
if (fakesrc->loop_based)
gst_element_set_loop_function (GST_ELEMENT (fakesrc), GST_DEBUG_FUNCPTR (gst_fakesrc_loop));
else
gst_pad_set_get_function (pad, GST_DEBUG_FUNCPTR (gst_fakesrc_get));
gst_fakesrc_update_functions (fakesrc);
fakesrc->num_buffers = -1;
fakesrc->buffer_count = 0;
fakesrc->silent = FALSE;
// we're ready right away, since we don't have any args...
// gst_element_set_state(GST_ELEMENT(fakesrc),GST_STATE_READY);
fakesrc->need_flush = FALSE;
}
static GstPad*
@ -216,6 +212,32 @@ gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ)
return srcpad;
}
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:
g_print("fakesrc: have seek event\n");
src->buffer_count = GST_EVENT_SEEK_OFFSET (event);
if (!GST_EVENT_SEEK_FLUSH (event)) {
gst_event_free (event);
break;
}
// else we do a flush too
case GST_EVENT_FLUSH:
g_print("fakesrc: have flush event\n");
src->need_flush = TRUE;
break;
default:
g_print("fakesrc: have unhandled event\n");
break;
}
}
static void
gst_fakesrc_update_functions (GstFakeSrc *src)
{
@ -238,6 +260,8 @@ gst_fakesrc_update_functions (GstFakeSrc *src)
else {
gst_pad_set_get_function (pad, GST_DEBUG_FUNCPTR (gst_fakesrc_get));
}
gst_pad_set_event_function (pad, gst_fakesrc_event_handler);
pads = g_slist_next (pads);
}
}
@ -333,6 +357,12 @@ gst_fakesrc_get(GstPad *pad)
g_return_val_if_fail (GST_IS_FAKESRC (src), NULL);
if (src->need_flush) {
src->need_flush = FALSE;
g_print("fakesrc: sending FLUSH\n");
return GST_BUFFER(gst_event_new (GST_EVENT_FLUSH));
}
if (src->num_buffers == 0) {
g_print("fakesrc: sending EOS\n");
gst_element_set_state (GST_ELEMENT (src), GST_STATE_PAUSED);
@ -388,17 +418,17 @@ gst_fakesrc_loop(GstElement *element)
GstBuffer *buf;
if (src->num_buffers == 0) {
gst_pad_event (pad, GST_EVENT_EOS, 0LL, 0);
return;
src->eos = TRUE;
}
else {
if (src->num_buffers > 0)
src->num_buffers--;
if (src->num_buffers > 0)
src->num_buffers--;
}
if (src->eos) {
GST_INFO (0, "fakesrc is setting eos on pad");
gst_pad_push(pad, GST_BUFFER(gst_event_new (GST_EVENT_EOS)));
return;
}
buf = gst_buffer_new();

1
gst/elements/gstfakesrc.h
View file

@ -74,6 +74,7 @@ struct _GstFakeSrc {
gint num_buffers;
guint64 buffer_count;
gboolean silent;
gboolean need_flush;
};
struct _GstFakeSrcClass {

14
gst/gstevent.c
View file

@ -80,3 +80,17 @@ gst_event_free (GstEvent* event)
g_mem_chunk_free (_gst_event_chunk, event);
g_mutex_unlock (_gst_event_chunk_lock);
}
/* seek stuff */
GstEvent*
gst_event_new_seek (GstSeekType type, guint64 offset, gboolean flush)
{
GstEvent *event;
event = gst_event_new (GST_EVENT_SEEK);
GST_EVENT_SEEK_TYPE (event) = type;
GST_EVENT_SEEK_OFFSET (event) = offset;
GST_EVENT_SEEK_FLUSH (event) = flush;
return event;
}

31
gst/gstevent.h
View file

@ -46,14 +46,35 @@ extern GType _gst_event_type;
#define GST_EVENT(event) ((GstEvent*)(event))
#define GST_IS_EVENT(event) (GST_DATA_TYPE(event) == GST_TYPE_EVENT)
#define GST_EVENT_TYPE(event) (GST_EVENT(event)->type)
#define GST_EVENT_TYPE(event) (GST_EVENT(event)->type)
#define GST_EVENT_TIMESTAMP(event) (GST_EVENT(event)->timstamp)
/* seek events */
typedef enum {
GST_SEEK_ANY,
GST_SEEK_TIMEOFFSET,
GST_SEEK_BYTEOFFSET
} GstSeekType;
#define GST_EVENT_SEEK_TYPE(event) (GST_EVENT(event)->event_data.seek.type)
#define GST_EVENT_SEEK_OFFSET(event) (GST_EVENT(event)->event_data.seek.offset)
#define GST_EVENT_SEEK_FLUSH(event) (GST_EVENT(event)->event_data.seek.flush)
typedef struct _GstEvent GstEvent;
struct _GstEvent {
GstData data;
GstEventType type;
GstEventType type;
guint64 timestamp;
union {
struct {
GstSeekType type;
guint64 offset;
gboolean flush;
} seek;
} event_data;
};
void _gst_event_initialize (void);
@ -61,6 +82,12 @@ void _gst_event_initialize (void);
GstEvent* gst_event_new (GstEventType type);
void gst_event_free (GstEvent* event);
/* seek events */
GstEvent* gst_event_new_seek (GstSeekType type, guint64 offset, gboolean flush);
/* flush events */
#define gst_event_new_flush() gst_event_new(GST_EVENT_FLUSH)
#ifdef __cplusplus
}
#endif /* __cplusplus */

28
gst/gstpad.c
View file

@ -1939,14 +1939,36 @@ gst_pad_event (GstPad *pad, GstEventType event, gint64 timestamp, guint32 data)
GST_DEBUG(GST_CAT_EVENT, "have event %d on pad %s:%s\n",(gint)event,GST_DEBUG_PAD_NAME(pad));
peer = GST_RPAD_PEER(pad);
if (GST_RPAD_EVENTFUNC(peer))
handled = GST_RPAD_EVENTFUNC(peer) (peer, event, timestamp, data);
if (GST_RPAD_EVENTFUNC(peer)) {
//handled = GST_RPAD_EVENTFUNC(peer) (peer, event, timestamp, data);
}
else {
GST_DEBUG(GST_CAT_EVENT, "there's no event function for peer %s:%s\n",GST_DEBUG_PAD_NAME(peer));
}
if (!handled) {
GST_DEBUG(GST_CAT_EVENT, "would proceed with default behavior here\n");
gst_pad_event_default(peer,event, timestamp, data);
//gst_pad_event_default(peer,event, timestamp, data);
}
}
gboolean
gst_pad_send_event (GstPad *pad, GstEvent *event)
{
gboolean handled = FALSE;
GST_DEBUG (GST_CAT_EVENT, "have event %d on pad %s:%s\n",
GST_EVENT_TYPE (event), GST_DEBUG_PAD_NAME (pad));
if (GST_RPAD_EVENTFUNC (pad))
handled = GST_RPAD_EVENTFUNC (pad) (pad, event);
else {
GST_DEBUG(GST_CAT_EVENT, "there's no event function for pad %s:%s\n", GST_DEBUG_PAD_NAME (pad));
}
if (!handled) {
GST_DEBUG(GST_CAT_EVENT, "would proceed with default behavior here\n");
//gst_pad_event_default (pad, event);
}
}

3
gst/gstpad.h
View file

@ -130,7 +130,7 @@ typedef enum {
* buf is the buffer being passed */
typedef void (*GstPadChainFunction) (GstPad *pad,GstBuffer *buf);
typedef GstBuffer* (*GstPadGetFunction) (GstPad *pad);
typedef gboolean (*GstPadEventFunction) (GstPad *pad, GstEventType event, gint64 timestamp, guint32 data);
typedef gboolean (*GstPadEventFunction) (GstPad *pad, GstEvent *event);
typedef GstBuffer* (*GstPadGetRegionFunction) (GstPad *pad, GstRegionType type, guint64 offset, guint64 len);
typedef GstBuffer* (*GstPadPullRegionFunction) (GstPad *pad, GstRegionType type, guint64 offset, guint64 len);
@ -412,6 +412,7 @@ FALSE )
}G_STMT_END
#endif
gboolean gst_pad_send_event (GstPad *pad, GstEvent *event);
GstBuffer* gst_pad_peek (GstPad *pad);
GstPad* gst_pad_select (GList *padlist);

28
plugins/elements/gstfakesink.c
View file

@ -67,7 +67,6 @@ static void gst_fakesink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static void gst_fakesink_chain (GstPad *pad, GstBuffer *buf);
static gboolean gst_fakesink_event (GstPad *pad, GstEventType event, guint64 timestamp, guint32 data);
static GstElementClass *parent_class = NULL;
static guint gst_fakesink_signals[LAST_SIGNAL] = { 0 };
@ -130,7 +129,6 @@ gst_fakesink_init (GstFakeSink *fakesink)
pad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (fakesink), pad);
gst_pad_set_chain_function (pad, GST_DEBUG_FUNCPTR (gst_fakesink_chain));
gst_pad_set_event_function (pad, GST_DEBUG_FUNCPTR (gst_fakesink_event));
fakesink->sinkpads = g_slist_prepend (NULL, pad);
fakesink->numsinkpads = 1;
@ -224,8 +222,18 @@ gst_fakesink_chain (GstPad *pad, GstBuffer *buf)
fakesink = GST_FAKESINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT(buf)) {
g_print("fakesink: have event!\n");
gst_element_set_state (GST_ELEMENT (fakesink), GST_STATE_PAUSED);
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
g_print("fakesink: have EOS event!\n");
gst_element_set_state (GST_ELEMENT (fakesink), GST_STATE_PAUSED);
break;
default:
g_print("fakesink: have unhandled event!\n");
break;
}
gst_event_free (event);
return;
}
@ -245,15 +253,3 @@ gst_fakesink_factory_init (GstElementFactory *factory)
return TRUE;
}
static gboolean
gst_fakesink_event (GstPad *pad, GstEventType event, guint64 timestamp, guint32 data)
{
GST_DEBUG (GST_CAT_EVENT, "fakesink has event %d on pad %s:%s\n",event,GST_DEBUG_PAD_NAME(pad));
if (event == GST_EVENT_EOS) {
GST_DEBUG(GST_CAT_EVENT, "have EOS\n");
}
return FALSE;
}

52
plugins/elements/gstfakesrc.c
View file

@ -86,6 +86,7 @@ static void gst_fakesrc_class_init (GstFakeSrcClass *klass);
static void gst_fakesrc_init (GstFakeSrc *fakesrc);
static GstPad* gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ);
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);
@ -176,17 +177,12 @@ gst_fakesrc_init (GstFakeSrc *fakesrc)
fakesrc->srcpads = g_slist_append (NULL, pad);
fakesrc->loop_based = FALSE;
if (fakesrc->loop_based)
gst_element_set_loop_function (GST_ELEMENT (fakesrc), GST_DEBUG_FUNCPTR (gst_fakesrc_loop));
else
gst_pad_set_get_function (pad, GST_DEBUG_FUNCPTR (gst_fakesrc_get));
gst_fakesrc_update_functions (fakesrc);
fakesrc->num_buffers = -1;
fakesrc->buffer_count = 0;
fakesrc->silent = FALSE;
// we're ready right away, since we don't have any args...
// gst_element_set_state(GST_ELEMENT(fakesrc),GST_STATE_READY);
fakesrc->need_flush = FALSE;
}
static GstPad*
@ -216,6 +212,32 @@ gst_fakesrc_request_new_pad (GstElement *element, GstPadTemplate *templ)
return srcpad;
}
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:
g_print("fakesrc: have seek event\n");
src->buffer_count = GST_EVENT_SEEK_OFFSET (event);
if (!GST_EVENT_SEEK_FLUSH (event)) {
gst_event_free (event);
break;
}
// else we do a flush too
case GST_EVENT_FLUSH:
g_print("fakesrc: have flush event\n");
src->need_flush = TRUE;
break;
default:
g_print("fakesrc: have unhandled event\n");
break;
}
}
static void
gst_fakesrc_update_functions (GstFakeSrc *src)
{
@ -238,6 +260,8 @@ gst_fakesrc_update_functions (GstFakeSrc *src)
else {
gst_pad_set_get_function (pad, GST_DEBUG_FUNCPTR (gst_fakesrc_get));
}
gst_pad_set_event_function (pad, gst_fakesrc_event_handler);
pads = g_slist_next (pads);
}
}
@ -333,6 +357,12 @@ gst_fakesrc_get(GstPad *pad)
g_return_val_if_fail (GST_IS_FAKESRC (src), NULL);
if (src->need_flush) {
src->need_flush = FALSE;
g_print("fakesrc: sending FLUSH\n");
return GST_BUFFER(gst_event_new (GST_EVENT_FLUSH));
}
if (src->num_buffers == 0) {
g_print("fakesrc: sending EOS\n");
gst_element_set_state (GST_ELEMENT (src), GST_STATE_PAUSED);
@ -388,17 +418,17 @@ gst_fakesrc_loop(GstElement *element)
GstBuffer *buf;
if (src->num_buffers == 0) {
gst_pad_event (pad, GST_EVENT_EOS, 0LL, 0);
return;
src->eos = TRUE;
}
else {
if (src->num_buffers > 0)
src->num_buffers--;
if (src->num_buffers > 0)
src->num_buffers--;
}
if (src->eos) {
GST_INFO (0, "fakesrc is setting eos on pad");
gst_pad_push(pad, GST_BUFFER(gst_event_new (GST_EVENT_EOS)));
return;
}
buf = gst_buffer_new();

1
plugins/elements/gstfakesrc.h
View file

@ -74,6 +74,7 @@ struct _GstFakeSrc {
gint num_buffers;
guint64 buffer_count;
gboolean silent;
gboolean need_flush;
};
struct _GstFakeSrcClass {