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gst/: More work on the generic source base class, implement seeking, query.

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Original commit message from CVS:
* gst/base/README:
* gst/base/gstbasesrc.c: (gst_basesrc_get_type),
(gst_basesrc_init), (gst_basesrc_get_formats), (gst_basesrc_query),
(gst_basesrc_get_event_mask), (gst_basesrc_do_seek),
(gst_basesrc_event_handler), (gst_basesrc_get_range_unlocked),
(gst_basesrc_check_get_range), (gst_basesrc_loop),
(gst_basesrc_unlock), (gst_basesrc_get_size), (gst_basesrc_start),
(gst_basesrc_stop), (gst_basesrc_activate),
(gst_basesrc_change_state), (basesrc_find_peek),
(basesrc_find_suggest), (gst_basesrc_type_find):
* gst/base/gstbasesrc.h:
* gst/elements/gstfilesrc.c: (gst_filesrc_base_init),
(gst_filesrc_class_init), (gst_filesrc_init),
(gst_filesrc_finalize), (gst_filesrc_set_location),
(gst_filesrc_set_property), (gst_filesrc_get_property),
(gst_filesrc_free_parent_mmap), (gst_filesrc_map_region),
(gst_filesrc_map_small_region), (gst_filesrc_create_mmap),
(gst_filesrc_create_read), (gst_filesrc_create),
(gst_filesrc_get_size), (gst_filesrc_start), (gst_filesrc_stop):
* gst/elements/gstfilesrc.h:
* gst/gstelement.c: (gst_element_get_state_func),
(gst_element_lost_state), (gst_element_pads_activate):
* gst/gstpad.c: (gst_pad_set_active), (gst_pad_peer_set_active),
(gst_pad_set_checkgetrange_function), (gst_pad_check_pull_range),
(gst_pad_pull_range):
* gst/gstpad.h:
More work on the generic source base class, implement seeking,
query.
Make filesrc extend the base source class.
Added gst_pad_set_checkgetrange_function to GstPad.
This commit is contained in:
Wim Taymans 2005-04-06 17:30:48 +00:00
parent 4c712824b9
commit aa00eb872d
14 changed files with 1643 additions and 1494 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
ChangeLog
View file

@ -1,3 +1,36 @@
2005-04-06 Wim Taymans <wim@fluendo.com>
* gst/base/README:
* gst/base/gstbasesrc.c: (gst_basesrc_get_type),
(gst_basesrc_init), (gst_basesrc_get_formats), (gst_basesrc_query),
(gst_basesrc_get_event_mask), (gst_basesrc_do_seek),
(gst_basesrc_event_handler), (gst_basesrc_get_range_unlocked),
(gst_basesrc_check_get_range), (gst_basesrc_loop),
(gst_basesrc_unlock), (gst_basesrc_get_size), (gst_basesrc_start),
(gst_basesrc_stop), (gst_basesrc_activate),
(gst_basesrc_change_state), (basesrc_find_peek),
(basesrc_find_suggest), (gst_basesrc_type_find):
* gst/base/gstbasesrc.h:
* gst/elements/gstfilesrc.c: (gst_filesrc_base_init),
(gst_filesrc_class_init), (gst_filesrc_init),
(gst_filesrc_finalize), (gst_filesrc_set_location),
(gst_filesrc_set_property), (gst_filesrc_get_property),
(gst_filesrc_free_parent_mmap), (gst_filesrc_map_region),
(gst_filesrc_map_small_region), (gst_filesrc_create_mmap),
(gst_filesrc_create_read), (gst_filesrc_create),
(gst_filesrc_get_size), (gst_filesrc_start), (gst_filesrc_stop):
* gst/elements/gstfilesrc.h:
* gst/gstelement.c: (gst_element_get_state_func),
(gst_element_lost_state), (gst_element_pads_activate):
* gst/gstpad.c: (gst_pad_set_active), (gst_pad_peer_set_active),
(gst_pad_set_checkgetrange_function), (gst_pad_check_pull_range),
(gst_pad_pull_range):
* gst/gstpad.h:
More work on the generic source base class, implement seeking,
query.
Make filesrc extend the base source class.
Added gst_pad_set_checkgetrange_function to GstPad.
2005-04-06 Andy Wingo <wingo@pobox.com>
* pkgconfig/gstreamer-base.pc.in:

1
gst/base/README
View file

@ -33,3 +33,4 @@ GstBaseSrc
- one sinkpad
- handles state changes
- pull/push mode
- handles seeking/query

472
gst/base/gstbasesrc.c
View file

@ -1,7 +1,6 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
* 2000,2005 Wim Taymans <wim@fluendo.com>
*
* gstbasesrc.c:
*
@ -92,12 +91,20 @@ static gboolean gst_basesrc_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value);
static const GstFormat *gst_basesrc_get_formats (GstPad * pad);
static gboolean gst_basesrc_unlock (GstBaseSrc * basesrc);
static gboolean gst_basesrc_get_size (GstBaseSrc * basesrc, guint64 * size);
static gboolean gst_basesrc_start (GstBaseSrc * basesrc);
static gboolean gst_basesrc_stop (GstBaseSrc * basesrc);
static GstElementStateReturn gst_basesrc_change_state (GstElement * element);
static void gst_basesrc_loop (GstPad * pad);
static gboolean gst_basesrc_check_get_range (GstPad * pad);
static GstFlowReturn gst_basesrc_get_range (GstPad * pad, guint64 offset,
guint length, GstBuffer ** buf);
static GstCaps *gst_basesrc_type_find (GstBaseSrc * src);
static void
gst_basesrc_base_init (gpointer g_class)
{
@ -145,12 +152,17 @@ gst_basesrc_init (GstBaseSrc * basesrc, gpointer g_class)
gst_pad_set_query_type_function (pad, gst_basesrc_get_query_types);
gst_pad_set_formats_function (pad, gst_basesrc_get_formats);
gst_pad_set_loop_function (pad, gst_basesrc_loop);
gst_pad_set_checkgetrange_function (pad, gst_basesrc_check_get_range);
gst_pad_set_getrange_function (pad, gst_basesrc_get_range);
/* hold ref to pad */
basesrc->srcpad = pad;
gst_element_add_pad (GST_ELEMENT (basesrc), pad);
basesrc->segment_start = -1;
basesrc->segment_end = -1;
basesrc->blocksize = DEFAULT_BLOCKSIZE;
GST_FLAG_UNSET (basesrc, GST_BASESRC_STARTED);
}
static const GstFormat *
@ -158,6 +170,7 @@ gst_basesrc_get_formats (GstPad * pad)
{
static const GstFormat formats[] = {
GST_FORMAT_DEFAULT,
GST_FORMAT_BYTES,
0,
};
@ -184,31 +197,156 @@ gst_basesrc_query (GstPad * pad, GstQueryType type,
{
GstBaseSrc *src = GST_BASESRC (GST_PAD_PARENT (pad));
if (*format == GST_FORMAT_DEFAULT)
*format = GST_FORMAT_BYTES;
switch (type) {
case GST_QUERY_TOTAL:
switch (*format) {
case GST_FORMAT_BYTES:
{
gboolean ret;
ret = gst_basesrc_get_size (src, value);
GST_DEBUG ("getting length %d %lld", ret, *value);
return ret;
}
case GST_FORMAT_PERCENT:
*value = GST_FORMAT_PERCENT_MAX;
return TRUE;
default:
return FALSE;
}
break;
case GST_QUERY_POSITION:
switch (*format) {
case GST_FORMAT_BYTES:
*value = src->offset;
break;
case GST_FORMAT_PERCENT:
if (!gst_basesrc_get_size (src, value))
return FALSE;
*value = src->offset * GST_FORMAT_PERCENT_MAX / *value;
return TRUE;
default:
return FALSE;
}
break;
case GST_QUERY_START:
*value = src->segment_start;
break;
return TRUE;
case GST_QUERY_SEGMENT_END:
*value = src->segment_end;
break;
return TRUE;
default:
return FALSE;
}
return TRUE;
return FALSE;
}
static const GstEventMask *
gst_basesrc_get_event_mask (GstPad * pad)
{
static const GstEventMask masks[] = {
{GST_EVENT_SEEK, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT_LOOP},
{GST_EVENT_SEEK, GST_SEEK_METHOD_CUR | GST_SEEK_METHOD_SET |
GST_SEEK_METHOD_END | GST_SEEK_FLAG_FLUSH |
GST_SEEK_FLAG_SEGMENT_LOOP},
{GST_EVENT_FLUSH, 0},
{GST_EVENT_SIZE, 0},
{0, 0},
};
return masks;
}
static gboolean
gst_basesrc_do_seek (GstBaseSrc * src, GstEvent * event)
{
GstFormat format;
gint64 offset;
format = GST_EVENT_SEEK_FORMAT (event);
/* get seek format */
if (format == GST_FORMAT_DEFAULT)
format = GST_FORMAT_BYTES;
/* we can only seek bytes */
if (format != GST_FORMAT_BYTES)
return FALSE;
/* get seek positions */
offset = GST_EVENT_SEEK_OFFSET (event);
src->segment_start = offset;
src->segment_end = GST_EVENT_SEEK_ENDOFFSET (event);
src->segment_loop = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_SEGMENT_LOOP;
/* send flush start */
gst_pad_push_event (src->srcpad, gst_event_new_flush (FALSE));
/* unblock streaming thread */
gst_basesrc_unlock (src);
/* grab streaming lock */
GST_STREAM_LOCK (src->srcpad);
switch (GST_EVENT_SEEK_METHOD (event)) {
case GST_SEEK_METHOD_SET:
if (offset < 0)
goto error;
src->offset = MIN (offset, src->size);
GST_DEBUG_OBJECT (src, "seek set pending to %" G_GINT64_FORMAT,
src->offset);
break;
case GST_SEEK_METHOD_CUR:
offset += src->offset;
src->offset = CLAMP (offset, 0, src->size);
GST_DEBUG_OBJECT (src, "seek cur pending to %" G_GINT64_FORMAT,
src->offset);
break;
case GST_SEEK_METHOD_END:
if (offset > 0)
goto error;
offset = src->size + offset;
src->offset = MAX (0, offset);
GST_DEBUG_OBJECT (src, "seek end pending to %" G_GINT64_FORMAT,
src->offset);
break;
default:
goto error;
}
/* send flush end */
gst_pad_push_event (src->srcpad, gst_event_new_flush (TRUE));
/* now send discont */
{
GstEvent *event;
event = gst_event_new_discontinuous (1.0,
GST_FORMAT_TIME,
(gint64) src->segment_start, (gint64) src->segment_end, NULL);
gst_pad_push_event (src->srcpad, event);
}
/* and restart the task */
if (GST_RPAD_TASK (src->srcpad)) {
gst_task_start (GST_RPAD_TASK (src->srcpad));
}
GST_STREAM_UNLOCK (src->srcpad);
gst_event_unref (event);
return TRUE;
/* ERROR */
error:
{
GST_DEBUG_OBJECT (src, "seek error");
GST_STREAM_UNLOCK (src->srcpad);
gst_event_unref (event);
return FALSE;
}
}
static gboolean
gst_basesrc_event_handler (GstPad * pad, GstEvent * event)
{
@ -218,12 +356,26 @@ gst_basesrc_event_handler (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
src->segment_start = GST_EVENT_SEEK_OFFSET (event);
src->segment_end = GST_EVENT_SEEK_ENDOFFSET (event);
src->segment_loop =
GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_SEGMENT_LOOP;
return gst_basesrc_do_seek (src, event);
case GST_EVENT_SIZE:
{
GstFormat format;
format = GST_EVENT_SIZE_FORMAT (event);
if (format == GST_FORMAT_DEFAULT)
format = GST_FORMAT_BYTES;
/* we can only accept bytes */
if (format != GST_FORMAT_BYTES)
return FALSE;
src->blocksize = GST_EVENT_SIZE_VALUE (event);
g_object_notify (G_OBJECT (src), "blocksize");
break;
}
case GST_EVENT_FLUSH:
/* cancel any blocking getrange */
if (!GST_EVENT_FLUSH_DONE (event))
gst_basesrc_unlock (src);
break;
default:
break;
@ -280,12 +432,41 @@ gst_basesrc_get_range_unlocked (GstPad * pad, guint64 offset, guint length,
src = GST_BASESRC (GST_OBJECT_PARENT (pad));
bclass = GST_BASESRC_GET_CLASS (src);
if (bclass->create)
ret = bclass->create (src, offset, length, buf);
else
ret = GST_FLOW_ERROR;
if (!GST_FLAG_IS_SET (src, GST_BASESRC_STARTED))
goto not_started;
if (!bclass->create)
goto no_function;
/* check size */
if (src->size != -1) {
if (offset + length > src->size) {
if (bclass->get_size)
bclass->get_size (src, &src->size);
if (offset + length > src->size) {
length = src->size - offset;
}
}
}
if (length == 0)
return GST_FLOW_UNEXPECTED;
ret = bclass->create (src, offset, length, buf);
return ret;
/* ERROR */
not_started:
{
GST_DEBUG_OBJECT (src, "getrange but not started");
return GST_FLOW_WRONG_STATE;
}
no_function:
{
GST_DEBUG_OBJECT (src, "no create function");
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
@ -303,6 +484,21 @@ gst_basesrc_get_range (GstPad * pad, guint64 offset, guint length,
return fret;
}
static gboolean
gst_basesrc_check_get_range (GstPad * pad)
{
GstBaseSrc *src;
src = GST_BASESRC (GST_OBJECT_PARENT (pad));
if (!GST_FLAG_IS_SET (src, GST_BASESRC_STARTED)) {
gst_basesrc_start (src);
gst_basesrc_stop (src);
}
return src->seekable;
}
static void
gst_basesrc_loop (GstPad * pad)
{
@ -314,11 +510,9 @@ gst_basesrc_loop (GstPad * pad)
GST_STREAM_LOCK (pad);
ret =
gst_basesrc_get_range_unlocked (pad, src->offset, DEFAULT_BLOCKSIZE,
&buf);
ret = gst_basesrc_get_range_unlocked (pad, src->offset, src->blocksize, &buf);
if (ret != GST_FLOW_OK)
goto pause;
goto eos;
src->offset += GST_BUFFER_SIZE (buf);
@ -329,22 +523,152 @@ gst_basesrc_loop (GstPad * pad)
GST_STREAM_UNLOCK (pad);
return;
eos:
{
GST_DEBUG_OBJECT (src, "going to EOS");
gst_task_pause (GST_RPAD_TASK (pad));
gst_pad_push_event (pad, gst_event_new (GST_EVENT_EOS));
GST_STREAM_UNLOCK (pad);
return;
}
pause:
{
GST_DEBUG_OBJECT (src, "pausing task");
gst_task_pause (GST_RPAD_TASK (pad));
GST_STREAM_UNLOCK (pad);
return;
}
}
static gboolean
gst_basesrc_unlock (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
gboolean result = FALSE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->unlock)
result = bclass->unlock (basesrc);
return result;
}
static gboolean
gst_basesrc_get_size (GstBaseSrc * basesrc, guint64 * size)
{
GstBaseSrcClass *bclass;
gboolean result = FALSE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->get_size)
result = bclass->get_size (basesrc, size);
if (result)
basesrc->size = *size;
return result;
}
static gboolean
gst_basesrc_start (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
gboolean result;
if (GST_FLAG_IS_SET (basesrc, GST_BASESRC_STARTED))
return TRUE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->start)
result = bclass->start (basesrc);
else
result = TRUE;
if (!result)
goto could_not_start;
GST_FLAG_SET (basesrc, GST_BASESRC_STARTED);
/* start in the beginning */
basesrc->offset = 0;
basesrc->segment_start = 0;
/* figure out the size */
if (bclass->get_size)
result = bclass->get_size (basesrc, &basesrc->size);
else
result = FALSE;
GST_DEBUG ("size %lld", basesrc->size);
/* we always run to the end */
basesrc->segment_end = -1;
/* check if we can seek */
if (bclass->is_seekable)
basesrc->seekable = bclass->is_seekable (basesrc);
else
basesrc->seekable = FALSE;
/* run typefind */
if (basesrc->seekable) {
GstCaps *caps;
caps = gst_basesrc_type_find (basesrc);
gst_pad_set_caps (basesrc->srcpad, caps);
}
return TRUE;
/* ERROR */
could_not_start:
{
GST_DEBUG_OBJECT (basesrc, "could not start");
return FALSE;
}
}
static gboolean
gst_basesrc_stop (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
gboolean result = TRUE;
if (!GST_FLAG_IS_SET (basesrc, GST_BASESRC_STARTED))
return TRUE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->stop)
result = bclass->stop (basesrc);
if (result)
GST_FLAG_UNSET (basesrc, GST_BASESRC_STARTED);
return result;
}
static gboolean
gst_basesrc_activate (GstPad * pad, GstActivateMode mode)
{
gboolean result = FALSE;
gboolean result;
GstBaseSrc *basesrc;
basesrc = GST_BASESRC (GST_OBJECT_PARENT (pad));
/* prepare subclass first */
switch (mode) {
case GST_ACTIVATE_PUSH:
case GST_ACTIVATE_PULL:
result = gst_basesrc_start (basesrc);
break;
default:
result = TRUE;
break;
}
/* if that failed we can stop here */
if (!result)
goto error_start;
result = FALSE;
switch (mode) {
case GST_ACTIVATE_PUSH:
/* if we have a scheduler we can start the task */
@ -379,6 +703,13 @@ gst_basesrc_activate (GstPad * pad, GstActivateMode mode)
break;
}
return result;
/* ERROR */
error_start:
{
GST_DEBUG_OBJECT (basesrc, "failed to start");
return FALSE;
}
}
static GstElementStateReturn
@ -396,10 +727,7 @@ gst_basesrc_change_state (GstElement * element)
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
{
basesrc->offset = 0;
break;
}
case GST_STATE_PAUSED_TO_PLAYING:
break;
default:
@ -412,6 +740,7 @@ gst_basesrc_change_state (GstElement * element)
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
result = gst_basesrc_stop (basesrc);
break;
case GST_STATE_READY_TO_NULL:
break;
@ -421,3 +750,100 @@ gst_basesrc_change_state (GstElement * element)
return result;
}
/**
* typefind code here
*/
typedef struct
{
GstBaseSrc *src;
guint best_probability;
GstCaps *caps;
GstBuffer *buffer;
}
BaseSrcTypeFind;
static guint8 *
basesrc_find_peek (gpointer data, gint64 offset, guint size)
{
BaseSrcTypeFind *find;
GstBuffer *buffer;
GstBaseSrc *src;
GstFlowReturn ret;
if (size == 0)
return NULL;
find = (BaseSrcTypeFind *) data;
src = find->src;
if (offset < 0) {
offset += src->size;
}
buffer = NULL;
ret = gst_basesrc_get_range_unlocked (src->srcpad, offset, size, &buffer);
if (find->buffer) {
gst_buffer_unref (find->buffer);
find->buffer = NULL;
}
if (ret != GST_FLOW_OK)
goto error;
find->buffer = buffer;
return GST_BUFFER_DATA (buffer);
error:
{
return NULL;
}
}
static void
basesrc_find_suggest (gpointer data, guint probability, const GstCaps * caps)
{
BaseSrcTypeFind *find = (BaseSrcTypeFind *) data;
if (probability > find->best_probability) {
gst_caps_replace (&find->caps, gst_caps_copy (caps));
find->best_probability = probability;
}
}
static GstCaps *
gst_basesrc_type_find (GstBaseSrc * src)
{
GstTypeFind gst_find;
BaseSrcTypeFind find;
GList *walk, *type_list = NULL;
GstCaps *result = NULL;
walk = type_list = gst_type_find_factory_get_list ();
find.src = src;
find.best_probability = 0;
find.caps = NULL;
find.buffer = NULL;
gst_find.data = &find;
gst_find.peek = basesrc_find_peek;
gst_find.suggest = basesrc_find_suggest;
gst_find.get_length = NULL;
while (walk) {
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
gst_type_find_factory_call_function (factory, &gst_find);
if (find.best_probability >= GST_TYPE_FIND_MAXIMUM)
break;
walk = g_list_next (walk);
}
if (find.best_probability > 0)
result = find.caps;
return result;
}

16
gst/base/gstbasesrc.h
View file

@ -35,19 +35,30 @@ G_BEGIN_DECLS
#define GST_IS_BASESRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASESRC))
#define GST_IS_BASESRC_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASESRC))
typedef enum {
GST_BASESRC_STARTED = GST_ELEMENT_FLAG_LAST,
GST_BASESRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2
} GstFileSrcFlags;
typedef struct _GstBaseSrc GstBaseSrc;
typedef struct _GstBaseSrcClass GstBaseSrcClass;
struct _GstBaseSrc {
GstElement element;
GstPad *srcpad;
gint blocksize;
gint64 segment_start;
gint64 segment_end;
gboolean segment_loop;
gboolean seekable;
guint64 offset;
guint64 size;
};
struct _GstBaseSrcClass {
@ -62,6 +73,11 @@ struct _GstBaseSrcClass {
void (*get_times) (GstBaseSrc *src, GstBuffer *buffer,
GstClockTime *start, GstClockTime *end);
gboolean (*get_size) (GstBaseSrc *src, guint64 *size);
gboolean (*is_seekable) (GstBaseSrc *src);
gboolean (*unlock) (GstBaseSrc *src);
gboolean (*event) (GstBaseSrc *src, GstEvent *event);
GstFlowReturn (*create) (GstBaseSrc *src, guint64 offset, guint size,
GstBuffer **buf);

1006
gst/elements/gstfilesrc.c
View file

File diff suppressed because it is too large Load diff

27
gst/elements/gstfilesrc.h
View file

@ -1,6 +1,7 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstfilesrc.h:
*
@ -20,16 +21,15 @@
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_FILESRC_H__
#define __GST_FILESRC_H__
#include <gst/gst.h>
#include <sys/types.h>
G_BEGIN_DECLS
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
G_BEGIN_DECLS
#define GST_TYPE_FILESRC \
(gst_filesrc_get_type())
@ -42,42 +42,29 @@ G_BEGIN_DECLS
#define GST_IS_FILESRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FILESRC))
typedef enum {
GST_FILESRC_OPEN = GST_ELEMENT_FLAG_LAST,
GST_FILESRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2
} GstFileSrcFlags;
typedef struct _GstFileSrc GstFileSrc;
typedef struct _GstFileSrcClass GstFileSrcClass;
struct _GstFileSrc {
GstElement element;
GstPad *srcpad;
GstBaseSrc element;
guint pagesize; /* system page size*/
gchar *filename; /* filename */
gchar *uri; /* caching the URI */
gint fd; /* open file descriptor*/
off_t filelen; /* what's the file length?*/
guint64 read_position; /* position of fd */
off_t curoffset; /* current offset in file*/
off_t block_size; /* bytes per read */
gboolean touch; /* whether to touch every page */
gboolean using_mmap; /* whether we opened it with mmap */
gboolean is_regular; /* whether it's (symlink to)
a regular file */
GstBuffer *mapbuf;
size_t mapsize;
gint need_discont;
gboolean need_flush;
};
struct _GstFileSrcClass {
GstElementClass parent_class;
GstBaseSrcClass parent_class;
};
GType gst_filesrc_get_type(void);

4
gst/gstelement.c
View file

@ -1987,8 +1987,8 @@ restart:
/* see if the pad has a loop function and grab
* the peer */
pad_get = gst_pad_check_pull_range (pad);
GST_LOCK (pad);
pad_get = GST_RPAD_GETRANGEFUNC (pad) != NULL;
pad_loop = GST_RPAD_LOOPFUNC (pad) != NULL;
peer = GST_RPAD_PEER (pad);
if (peer)
@ -1999,7 +1999,7 @@ restart:
gboolean peer_loop, peer_get;
/* see if the peer has a getrange function */
peer_get = GST_RPAD_GETRANGEFUNC (peer) != NULL;
peer_get = gst_pad_check_pull_range (pad);
/* see if the peer has a loop function */
peer_loop = GST_RPAD_LOOPFUNC (peer) != NULL;

55
gst/gstpad.c
View file

@ -837,6 +837,27 @@ gst_pad_set_getrange_function (GstPad * pad, GstPadGetRangeFunction get)
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (get));
}
/**
* gst_pad_set_checkgetrange_function:
* @pad: a real source #GstPad.
* @check: the #GstPadCheckGetRangeFunction to set.
*
* Sets the given checkgetrange function for the pad. Implement this function on
* a pad if you dynamically support getrange based scheduling on the pad.
*/
void
gst_pad_set_checkgetrange_function (GstPad * pad,
GstPadCheckGetRangeFunction check)
{
g_return_if_fail (GST_IS_REAL_PAD (pad));
g_return_if_fail (GST_RPAD_DIRECTION (pad) == GST_PAD_SRC);
GST_RPAD_CHECKGETRANGEFUNC (pad) = check;
GST_CAT_DEBUG (GST_CAT_PADS, "checkgetrangefunc for %s:%s set to %s",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_FUNCPTR_NAME (check));
}
/**
* gst_pad_set_event_function:
* @pad: a real source #GstPad.
@ -2980,11 +3001,11 @@ gst_pad_check_pull_range (GstPad * pad)
gboolean ret;
GstPadCheckGetRangeFunction checkgetrangefunc;
g_return_val_if_fail (GST_IS_REAL_PAD (pad), GST_FLOW_ERROR);
g_return_val_if_fail (GST_RPAD_DIRECTION (pad) == GST_PAD_SINK,
GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_REAL_PAD (pad), FALSE);
GST_LOCK (pad);
if (GST_RPAD_DIRECTION (pad) != GST_PAD_SINK)
goto wrong_direction;
if (G_UNLIKELY ((peer = GST_RPAD_PEER (pad)) == NULL))
goto not_connected;
@ -2993,33 +3014,31 @@ gst_pad_check_pull_range (GstPad * pad)
GST_UNLOCK (pad);
/* see note in above function */
if (G_UNLIKELY ((checkgetrangefunc = peer->checkgetrangefunc) == NULL))
goto no_function;
if (G_LIKELY ((checkgetrangefunc = peer->checkgetrangefunc) == NULL)) {
ret = GST_RPAD_GETRANGEFUNC (peer) != NULL;
} else {
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"calling checkgetrangefunc %s of peer pad %s:%s",
GST_DEBUG_FUNCPTR_NAME (checkgetrangefunc), GST_DEBUG_PAD_NAME (peer));
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"calling checkgetrangefunc %s of peer pad %s:%s",
GST_DEBUG_FUNCPTR_NAME (checkgetrangefunc), GST_DEBUG_PAD_NAME (peer));
ret = checkgetrangefunc (GST_PAD_CAST (peer));
ret = checkgetrangefunc (GST_PAD_CAST (peer));
}
gst_object_unref (GST_OBJECT_CAST (peer));
return ret;
/* ERROR recovery here */
not_connected:
wrong_direction:
{
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"checkinh pull range, but it was not linked");
GST_UNLOCK (pad);
return FALSE;
}
no_function:
not_connected:
{
GST_ELEMENT_ERROR (GST_PAD_PARENT (pad), CORE, PAD, (NULL),
("pad %s:%s checked pull_range but the peer pad %s:%s has no checkgetrangefunction",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (peer)));
gst_object_unref (GST_OBJECT (peer));
GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad,
"checking pull range, but it was not linked");
GST_UNLOCK (pad);
return FALSE;
}
}

1
gst/gstpad.h
View file

@ -484,6 +484,7 @@ void gst_pad_set_activate_function (GstPad *pad, GstPadActivateFunction activ
void gst_pad_set_loop_function (GstPad *pad, GstPadLoopFunction loop);
void gst_pad_set_chain_function (GstPad *pad, GstPadChainFunction chain);
void gst_pad_set_getrange_function (GstPad *pad, GstPadGetRangeFunction get);
void gst_pad_set_checkgetrange_function (GstPad *pad, GstPadCheckGetRangeFunction check);
void gst_pad_set_event_function (GstPad *pad, GstPadEventFunction event);
void gst_pad_set_event_mask_function (GstPad *pad, GstPadEventMaskFunction mask_func);
G_CONST_RETURN GstEventMask*

1
libs/gst/base/README
View file

@ -33,3 +33,4 @@ GstBaseSrc
- one sinkpad
- handles state changes
- pull/push mode
- handles seeking/query

472
libs/gst/base/gstbasesrc.c
View file

@ -1,7 +1,6 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
* 2000,2005 Wim Taymans <wim@fluendo.com>
*
* gstbasesrc.c:
*
@ -92,12 +91,20 @@ static gboolean gst_basesrc_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value);
static const GstFormat *gst_basesrc_get_formats (GstPad * pad);
static gboolean gst_basesrc_unlock (GstBaseSrc * basesrc);
static gboolean gst_basesrc_get_size (GstBaseSrc * basesrc, guint64 * size);
static gboolean gst_basesrc_start (GstBaseSrc * basesrc);
static gboolean gst_basesrc_stop (GstBaseSrc * basesrc);
static GstElementStateReturn gst_basesrc_change_state (GstElement * element);
static void gst_basesrc_loop (GstPad * pad);
static gboolean gst_basesrc_check_get_range (GstPad * pad);
static GstFlowReturn gst_basesrc_get_range (GstPad * pad, guint64 offset,
guint length, GstBuffer ** buf);
static GstCaps *gst_basesrc_type_find (GstBaseSrc * src);
static void
gst_basesrc_base_init (gpointer g_class)
{
@ -145,12 +152,17 @@ gst_basesrc_init (GstBaseSrc * basesrc, gpointer g_class)
gst_pad_set_query_type_function (pad, gst_basesrc_get_query_types);
gst_pad_set_formats_function (pad, gst_basesrc_get_formats);
gst_pad_set_loop_function (pad, gst_basesrc_loop);
gst_pad_set_checkgetrange_function (pad, gst_basesrc_check_get_range);
gst_pad_set_getrange_function (pad, gst_basesrc_get_range);
/* hold ref to pad */
basesrc->srcpad = pad;
gst_element_add_pad (GST_ELEMENT (basesrc), pad);
basesrc->segment_start = -1;
basesrc->segment_end = -1;
basesrc->blocksize = DEFAULT_BLOCKSIZE;
GST_FLAG_UNSET (basesrc, GST_BASESRC_STARTED);
}
static const GstFormat *
@ -158,6 +170,7 @@ gst_basesrc_get_formats (GstPad * pad)
{
static const GstFormat formats[] = {
GST_FORMAT_DEFAULT,
GST_FORMAT_BYTES,
0,
};
@ -184,31 +197,156 @@ gst_basesrc_query (GstPad * pad, GstQueryType type,
{
GstBaseSrc *src = GST_BASESRC (GST_PAD_PARENT (pad));
if (*format == GST_FORMAT_DEFAULT)
*format = GST_FORMAT_BYTES;
switch (type) {
case GST_QUERY_TOTAL:
switch (*format) {
case GST_FORMAT_BYTES:
{
gboolean ret;
ret = gst_basesrc_get_size (src, value);
GST_DEBUG ("getting length %d %lld", ret, *value);
return ret;
}
case GST_FORMAT_PERCENT:
*value = GST_FORMAT_PERCENT_MAX;
return TRUE;
default:
return FALSE;
}
break;
case GST_QUERY_POSITION:
switch (*format) {
case GST_FORMAT_BYTES:
*value = src->offset;
break;
case GST_FORMAT_PERCENT:
if (!gst_basesrc_get_size (src, value))
return FALSE;
*value = src->offset * GST_FORMAT_PERCENT_MAX / *value;
return TRUE;
default:
return FALSE;
}
break;
case GST_QUERY_START:
*value = src->segment_start;
break;
return TRUE;
case GST_QUERY_SEGMENT_END:
*value = src->segment_end;
break;
return TRUE;
default:
return FALSE;
}
return TRUE;
return FALSE;
}
static const GstEventMask *
gst_basesrc_get_event_mask (GstPad * pad)
{
static const GstEventMask masks[] = {
{GST_EVENT_SEEK, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT_LOOP},
{GST_EVENT_SEEK, GST_SEEK_METHOD_CUR | GST_SEEK_METHOD_SET |
GST_SEEK_METHOD_END | GST_SEEK_FLAG_FLUSH |
GST_SEEK_FLAG_SEGMENT_LOOP},
{GST_EVENT_FLUSH, 0},
{GST_EVENT_SIZE, 0},
{0, 0},
};
return masks;
}
static gboolean
gst_basesrc_do_seek (GstBaseSrc * src, GstEvent * event)
{
GstFormat format;
gint64 offset;
format = GST_EVENT_SEEK_FORMAT (event);
/* get seek format */
if (format == GST_FORMAT_DEFAULT)
format = GST_FORMAT_BYTES;
/* we can only seek bytes */
if (format != GST_FORMAT_BYTES)
return FALSE;
/* get seek positions */
offset = GST_EVENT_SEEK_OFFSET (event);
src->segment_start = offset;
src->segment_end = GST_EVENT_SEEK_ENDOFFSET (event);
src->segment_loop = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_SEGMENT_LOOP;
/* send flush start */
gst_pad_push_event (src->srcpad, gst_event_new_flush (FALSE));
/* unblock streaming thread */
gst_basesrc_unlock (src);
/* grab streaming lock */
GST_STREAM_LOCK (src->srcpad);
switch (GST_EVENT_SEEK_METHOD (event)) {
case GST_SEEK_METHOD_SET:
if (offset < 0)
goto error;
src->offset = MIN (offset, src->size);
GST_DEBUG_OBJECT (src, "seek set pending to %" G_GINT64_FORMAT,
src->offset);
break;
case GST_SEEK_METHOD_CUR:
offset += src->offset;
src->offset = CLAMP (offset, 0, src->size);
GST_DEBUG_OBJECT (src, "seek cur pending to %" G_GINT64_FORMAT,
src->offset);
break;
case GST_SEEK_METHOD_END:
if (offset > 0)
goto error;
offset = src->size + offset;
src->offset = MAX (0, offset);
GST_DEBUG_OBJECT (src, "seek end pending to %" G_GINT64_FORMAT,
src->offset);
break;
default:
goto error;
}
/* send flush end */
gst_pad_push_event (src->srcpad, gst_event_new_flush (TRUE));
/* now send discont */
{
GstEvent *event;
event = gst_event_new_discontinuous (1.0,
GST_FORMAT_TIME,
(gint64) src->segment_start, (gint64) src->segment_end, NULL);
gst_pad_push_event (src->srcpad, event);
}
/* and restart the task */
if (GST_RPAD_TASK (src->srcpad)) {
gst_task_start (GST_RPAD_TASK (src->srcpad));
}
GST_STREAM_UNLOCK (src->srcpad);
gst_event_unref (event);
return TRUE;
/* ERROR */
error:
{
GST_DEBUG_OBJECT (src, "seek error");
GST_STREAM_UNLOCK (src->srcpad);
gst_event_unref (event);
return FALSE;
}
}
static gboolean
gst_basesrc_event_handler (GstPad * pad, GstEvent * event)
{
@ -218,12 +356,26 @@ gst_basesrc_event_handler (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
src->segment_start = GST_EVENT_SEEK_OFFSET (event);
src->segment_end = GST_EVENT_SEEK_ENDOFFSET (event);
src->segment_loop =
GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_SEGMENT_LOOP;
return gst_basesrc_do_seek (src, event);
case GST_EVENT_SIZE:
{
GstFormat format;
format = GST_EVENT_SIZE_FORMAT (event);
if (format == GST_FORMAT_DEFAULT)
format = GST_FORMAT_BYTES;
/* we can only accept bytes */
if (format != GST_FORMAT_BYTES)
return FALSE;
src->blocksize = GST_EVENT_SIZE_VALUE (event);
g_object_notify (G_OBJECT (src), "blocksize");
break;
}
case GST_EVENT_FLUSH:
/* cancel any blocking getrange */
if (!GST_EVENT_FLUSH_DONE (event))
gst_basesrc_unlock (src);
break;
default:
break;
@ -280,12 +432,41 @@ gst_basesrc_get_range_unlocked (GstPad * pad, guint64 offset, guint length,
src = GST_BASESRC (GST_OBJECT_PARENT (pad));
bclass = GST_BASESRC_GET_CLASS (src);
if (bclass->create)
ret = bclass->create (src, offset, length, buf);
else
ret = GST_FLOW_ERROR;
if (!GST_FLAG_IS_SET (src, GST_BASESRC_STARTED))
goto not_started;
if (!bclass->create)
goto no_function;
/* check size */
if (src->size != -1) {
if (offset + length > src->size) {
if (bclass->get_size)
bclass->get_size (src, &src->size);
if (offset + length > src->size) {
length = src->size - offset;
}
}
}
if (length == 0)
return GST_FLOW_UNEXPECTED;
ret = bclass->create (src, offset, length, buf);
return ret;
/* ERROR */
not_started:
{
GST_DEBUG_OBJECT (src, "getrange but not started");
return GST_FLOW_WRONG_STATE;
}
no_function:
{
GST_DEBUG_OBJECT (src, "no create function");
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
@ -303,6 +484,21 @@ gst_basesrc_get_range (GstPad * pad, guint64 offset, guint length,
return fret;
}
static gboolean
gst_basesrc_check_get_range (GstPad * pad)
{
GstBaseSrc *src;
src = GST_BASESRC (GST_OBJECT_PARENT (pad));
if (!GST_FLAG_IS_SET (src, GST_BASESRC_STARTED)) {
gst_basesrc_start (src);
gst_basesrc_stop (src);
}
return src->seekable;
}
static void
gst_basesrc_loop (GstPad * pad)
{
@ -314,11 +510,9 @@ gst_basesrc_loop (GstPad * pad)
GST_STREAM_LOCK (pad);
ret =
gst_basesrc_get_range_unlocked (pad, src->offset, DEFAULT_BLOCKSIZE,
&buf);
ret = gst_basesrc_get_range_unlocked (pad, src->offset, src->blocksize, &buf);
if (ret != GST_FLOW_OK)
goto pause;
goto eos;
src->offset += GST_BUFFER_SIZE (buf);
@ -329,22 +523,152 @@ gst_basesrc_loop (GstPad * pad)
GST_STREAM_UNLOCK (pad);
return;
eos:
{
GST_DEBUG_OBJECT (src, "going to EOS");
gst_task_pause (GST_RPAD_TASK (pad));
gst_pad_push_event (pad, gst_event_new (GST_EVENT_EOS));
GST_STREAM_UNLOCK (pad);
return;
}
pause:
{
GST_DEBUG_OBJECT (src, "pausing task");
gst_task_pause (GST_RPAD_TASK (pad));
GST_STREAM_UNLOCK (pad);
return;
}
}
static gboolean
gst_basesrc_unlock (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
gboolean result = FALSE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->unlock)
result = bclass->unlock (basesrc);
return result;
}
static gboolean
gst_basesrc_get_size (GstBaseSrc * basesrc, guint64 * size)
{
GstBaseSrcClass *bclass;
gboolean result = FALSE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->get_size)
result = bclass->get_size (basesrc, size);
if (result)
basesrc->size = *size;
return result;
}
static gboolean
gst_basesrc_start (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
gboolean result;
if (GST_FLAG_IS_SET (basesrc, GST_BASESRC_STARTED))
return TRUE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->start)
result = bclass->start (basesrc);
else
result = TRUE;
if (!result)
goto could_not_start;
GST_FLAG_SET (basesrc, GST_BASESRC_STARTED);
/* start in the beginning */
basesrc->offset = 0;
basesrc->segment_start = 0;
/* figure out the size */
if (bclass->get_size)
result = bclass->get_size (basesrc, &basesrc->size);
else
result = FALSE;
GST_DEBUG ("size %lld", basesrc->size);
/* we always run to the end */
basesrc->segment_end = -1;
/* check if we can seek */
if (bclass->is_seekable)
basesrc->seekable = bclass->is_seekable (basesrc);
else
basesrc->seekable = FALSE;
/* run typefind */
if (basesrc->seekable) {
GstCaps *caps;
caps = gst_basesrc_type_find (basesrc);
gst_pad_set_caps (basesrc->srcpad, caps);
}
return TRUE;
/* ERROR */
could_not_start:
{
GST_DEBUG_OBJECT (basesrc, "could not start");
return FALSE;
}
}
static gboolean
gst_basesrc_stop (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
gboolean result = TRUE;
if (!GST_FLAG_IS_SET (basesrc, GST_BASESRC_STARTED))
return TRUE;
bclass = GST_BASESRC_GET_CLASS (basesrc);
if (bclass->stop)
result = bclass->stop (basesrc);
if (result)
GST_FLAG_UNSET (basesrc, GST_BASESRC_STARTED);
return result;
}
static gboolean
gst_basesrc_activate (GstPad * pad, GstActivateMode mode)
{
gboolean result = FALSE;
gboolean result;
GstBaseSrc *basesrc;
basesrc = GST_BASESRC (GST_OBJECT_PARENT (pad));
/* prepare subclass first */
switch (mode) {
case GST_ACTIVATE_PUSH:
case GST_ACTIVATE_PULL:
result = gst_basesrc_start (basesrc);
break;
default:
result = TRUE;
break;
}
/* if that failed we can stop here */
if (!result)
goto error_start;
result = FALSE;
switch (mode) {
case GST_ACTIVATE_PUSH:
/* if we have a scheduler we can start the task */
@ -379,6 +703,13 @@ gst_basesrc_activate (GstPad * pad, GstActivateMode mode)
break;
}
return result;
/* ERROR */
error_start:
{
GST_DEBUG_OBJECT (basesrc, "failed to start");
return FALSE;
}
}
static GstElementStateReturn
@ -396,10 +727,7 @@ gst_basesrc_change_state (GstElement * element)
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
{
basesrc->offset = 0;
break;
}
case GST_STATE_PAUSED_TO_PLAYING:
break;
default:
@ -412,6 +740,7 @@ gst_basesrc_change_state (GstElement * element)
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
result = gst_basesrc_stop (basesrc);
break;
case GST_STATE_READY_TO_NULL:
break;
@ -421,3 +750,100 @@ gst_basesrc_change_state (GstElement * element)
return result;
}
/**
* typefind code here
*/
typedef struct
{
GstBaseSrc *src;
guint best_probability;
GstCaps *caps;
GstBuffer *buffer;
}
BaseSrcTypeFind;
static guint8 *
basesrc_find_peek (gpointer data, gint64 offset, guint size)
{
BaseSrcTypeFind *find;
GstBuffer *buffer;
GstBaseSrc *src;
GstFlowReturn ret;
if (size == 0)
return NULL;
find = (BaseSrcTypeFind *) data;
src = find->src;
if (offset < 0) {
offset += src->size;
}
buffer = NULL;
ret = gst_basesrc_get_range_unlocked (src->srcpad, offset, size, &buffer);
if (find->buffer) {
gst_buffer_unref (find->buffer);
find->buffer = NULL;
}
if (ret != GST_FLOW_OK)
goto error;
find->buffer = buffer;
return GST_BUFFER_DATA (buffer);
error:
{
return NULL;
}
}
static void
basesrc_find_suggest (gpointer data, guint probability, const GstCaps * caps)
{
BaseSrcTypeFind *find = (BaseSrcTypeFind *) data;
if (probability > find->best_probability) {
gst_caps_replace (&find->caps, gst_caps_copy (caps));
find->best_probability = probability;
}
}
static GstCaps *
gst_basesrc_type_find (GstBaseSrc * src)
{
GstTypeFind gst_find;
BaseSrcTypeFind find;
GList *walk, *type_list = NULL;
GstCaps *result = NULL;
walk = type_list = gst_type_find_factory_get_list ();
find.src = src;
find.best_probability = 0;
find.caps = NULL;
find.buffer = NULL;
gst_find.data = &find;
gst_find.peek = basesrc_find_peek;
gst_find.suggest = basesrc_find_suggest;
gst_find.get_length = NULL;
while (walk) {
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
gst_type_find_factory_call_function (factory, &gst_find);
if (find.best_probability >= GST_TYPE_FIND_MAXIMUM)
break;
walk = g_list_next (walk);
}
if (find.best_probability > 0)
result = find.caps;
return result;
}

16
libs/gst/base/gstbasesrc.h
View file

@ -35,19 +35,30 @@ G_BEGIN_DECLS
#define GST_IS_BASESRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASESRC))
#define GST_IS_BASESRC_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASESRC))
typedef enum {
GST_BASESRC_STARTED = GST_ELEMENT_FLAG_LAST,
GST_BASESRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2
} GstFileSrcFlags;
typedef struct _GstBaseSrc GstBaseSrc;
typedef struct _GstBaseSrcClass GstBaseSrcClass;
struct _GstBaseSrc {
GstElement element;
GstPad *srcpad;
gint blocksize;
gint64 segment_start;
gint64 segment_end;
gboolean segment_loop;
gboolean seekable;
guint64 offset;
guint64 size;
};
struct _GstBaseSrcClass {
@ -62,6 +73,11 @@ struct _GstBaseSrcClass {
void (*get_times) (GstBaseSrc *src, GstBuffer *buffer,
GstClockTime *start, GstClockTime *end);
gboolean (*get_size) (GstBaseSrc *src, guint64 *size);
gboolean (*is_seekable) (GstBaseSrc *src);
gboolean (*unlock) (GstBaseSrc *src);
gboolean (*event) (GstBaseSrc *src, GstEvent *event);
GstFlowReturn (*create) (GstBaseSrc *src, guint64 offset, guint size,
GstBuffer **buf);

1006
plugins/elements/gstfilesrc.c
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File diff suppressed because it is too large Load diff

27
plugins/elements/gstfilesrc.h
View file

@ -1,6 +1,7 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstfilesrc.h:
*
@ -20,16 +21,15 @@
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_FILESRC_H__
#define __GST_FILESRC_H__
#include <gst/gst.h>
#include <sys/types.h>
G_BEGIN_DECLS
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
G_BEGIN_DECLS
#define GST_TYPE_FILESRC \
(gst_filesrc_get_type())
@ -42,42 +42,29 @@ G_BEGIN_DECLS
#define GST_IS_FILESRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FILESRC))
typedef enum {
GST_FILESRC_OPEN = GST_ELEMENT_FLAG_LAST,
GST_FILESRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2
} GstFileSrcFlags;
typedef struct _GstFileSrc GstFileSrc;
typedef struct _GstFileSrcClass GstFileSrcClass;
struct _GstFileSrc {
GstElement element;
GstPad *srcpad;
GstBaseSrc element;
guint pagesize; /* system page size*/
gchar *filename; /* filename */
gchar *uri; /* caching the URI */
gint fd; /* open file descriptor*/
off_t filelen; /* what's the file length?*/
guint64 read_position; /* position of fd */
off_t curoffset; /* current offset in file*/
off_t block_size; /* bytes per read */
gboolean touch; /* whether to touch every page */
gboolean using_mmap; /* whether we opened it with mmap */
gboolean is_regular; /* whether it's (symlink to)
a regular file */
GstBuffer *mapbuf;
size_t mapsize;
gint need_discont;
gboolean need_flush;
};
struct _GstFileSrcClass {
GstElementClass parent_class;
GstBaseSrcClass parent_class;
};
GType gst_filesrc_get_type(void);