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go away i tell you

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Original commit message from CVS:
go away i tell you
This commit is contained in:
Andy Wingo 2001-12-14 00:00:10 +00:00
parent a1669cdddd
commit 413a70a342
4 changed files with 0 additions and 950 deletions
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383
gst/elements/gstdisksrc.c
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@ -1,383 +0,0 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstdisksrc.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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
//#define GST_DEBUG_ENABLED
#include "gstdisksrc.h"
GstElementDetails gst_disksrc_details = {
"Disk Source",
"Source/File",
"Read from arbitrary point in a file",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
/* DiskSrc signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOCATION,
ARG_BYTESPERREAD,
ARG_OFFSET,
ARG_FILESIZE,
};
static void gst_disksrc_class_init (GstDiskSrcClass *klass);
static void gst_disksrc_init (GstDiskSrc *disksrc);
static void gst_disksrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_disksrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstBuffer* gst_disksrc_get (GstPad *pad);
static GstBufferPool* gst_disksrc_get_bufferpool (GstPad *pad);
static GstElementStateReturn
gst_disksrc_change_state (GstElement *element);
static gboolean gst_disksrc_open_file (GstDiskSrc *src);
static void gst_disksrc_close_file (GstDiskSrc *src);
static GstElementClass* parent_class = NULL;
//static guint gst_disksrc_signals[LAST_SIGNAL] = { 0 };
GType
gst_disksrc_get_type(void)
{
static GType disksrc_type = 0;
if (!disksrc_type) {
static const GTypeInfo disksrc_info = {
sizeof(GstDiskSrcClass), NULL,
NULL,
(GClassInitFunc)gst_disksrc_class_init,
NULL,
NULL,
sizeof(GstDiskSrc),
0,
(GInstanceInitFunc)gst_disksrc_init,
};
disksrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstDiskSrc", &disksrc_info, 0);
}
return disksrc_type;
}
static void
gst_disksrc_class_init (GstDiskSrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gst_element_install_std_props (
GST_ELEMENT_CLASS (klass),
"location", ARG_LOCATION, G_PARAM_READWRITE,
"bytesperread", ARG_BYTESPERREAD, G_PARAM_READWRITE,
"offset", ARG_OFFSET, G_PARAM_READWRITE,
"filesize", ARG_FILESIZE, G_PARAM_READABLE,
NULL);
gobject_class->set_property = gst_disksrc_set_property;
gobject_class->get_property = gst_disksrc_get_property;
gstelement_class->change_state = gst_disksrc_change_state;
}
static void
gst_disksrc_init (GstDiskSrc *disksrc)
{
// GST_FLAG_SET (disksrc, GST_SRC_);
disksrc->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_pad_set_get_function (disksrc->srcpad, gst_disksrc_get);
gst_pad_set_bufferpool_function (disksrc->srcpad, gst_disksrc_get_bufferpool);
gst_element_add_pad (GST_ELEMENT (disksrc), disksrc->srcpad);
disksrc->filename = NULL;
disksrc->fd = 0;
disksrc->size = 0;
disksrc->map = NULL;
disksrc->curoffset = 0;
disksrc->bytes_per_read = 4096;
disksrc->seq = 0;
disksrc->new_seek = FALSE;
}
static void
gst_disksrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstDiskSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DISKSRC (object));
src = GST_DISKSRC (object);
switch (prop_id) {
case ARG_LOCATION:
/* the element must be stopped or paused in order to do this */
g_return_if_fail ((GST_STATE (src) < GST_STATE_PLAYING)
|| (GST_STATE (src) == GST_STATE_PAUSED));
if (src->filename) g_free (src->filename);
/* clear the filename if we get a NULL (is that possible?) */
if (g_value_get_string (value) == NULL) {
gst_element_set_state (GST_ELEMENT (object), GST_STATE_NULL);
src->filename = NULL;
/* otherwise set the new filename */
} else {
src->filename = g_strdup (g_value_get_string (value));
}
if ((GST_STATE (src) == GST_STATE_PAUSED) && (src->filename != NULL))
{
gst_disksrc_close_file(src);
gst_disksrc_open_file(src);
}
break;
case ARG_BYTESPERREAD:
src->bytes_per_read = g_value_get_int (value);
break;
case ARG_OFFSET:
src->curoffset = g_value_get_long (value);
src->new_seek = TRUE;
break;
default:
break;
}
}
static void
gst_disksrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstDiskSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DISKSRC (object));
src = GST_DISKSRC (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, src->filename);
break;
case ARG_BYTESPERREAD:
g_value_set_int (value, src->bytes_per_read);
break;
case ARG_OFFSET:
g_value_set_long (value, src->curoffset);
break;
case ARG_FILESIZE:
g_value_set_long (value, src->size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstBuffer*
gst_disksrc_buffer_new (GstBufferPool *pool, gint64 location, gint size, gpointer user_data)
{
GstDiskSrc *src;
GstBuffer *buf;
src = GST_DISKSRC (user_data);
buf = gst_buffer_new ();
g_return_val_if_fail (buf != NULL, NULL);
/* simply set the buffer to point to the correct region of the file */
GST_BUFFER_DATA (buf) = src->map + location;
GST_BUFFER_OFFSET (buf) = location;
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_DONTFREE);
if ((location + size) > src->size)
GST_BUFFER_SIZE (buf) = src->size - location;
else
GST_BUFFER_SIZE (buf) = size;
GST_DEBUG (0,"map %p, offset %ld (%p), size %d\n", src->map, src->curoffset,
src->map + src->curoffset, GST_BUFFER_SIZE (buf));
return buf;
}
static void
gst_disksrc_buffer_free (GstBuffer *buf)
{
// FIXME do something here
}
static GstBufferPool*
gst_disksrc_get_bufferpool (GstPad *pad)
{
GstDiskSrc *src;
src = GST_DISKSRC (gst_pad_get_parent (pad));
if (!src->bufferpool) {
src->bufferpool = gst_buffer_pool_new ();
gst_buffer_pool_set_buffer_new_function (src->bufferpool, gst_disksrc_buffer_new);
gst_buffer_pool_set_buffer_free_function (src->bufferpool, gst_disksrc_buffer_free);
gst_buffer_pool_set_user_data (src->bufferpool, src);
}
return src->bufferpool;
}
/**
* gst_disksrc_get:
* @pad: #GstPad to push a buffer from
*
* Push a new buffer from the disksrc at the current offset.
*/
static GstBuffer *
gst_disksrc_get (GstPad *pad)
{
GstDiskSrc *src;
GstBuffer *buf;
g_return_val_if_fail (pad != NULL, NULL);
src = GST_DISKSRC (gst_pad_get_parent (pad));
g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_DISKSRC_OPEN), NULL);
/* deal with EOF state */
if (src->curoffset >= src->size) {
GST_DEBUG (0,"map offset %ld >= size %ld --> eos\n", src->curoffset, src->size);
return GST_BUFFER(gst_event_new (GST_EVENT_EOS));
}
// FIXME use a bufferpool
buf = gst_disksrc_buffer_new (NULL, src->curoffset, src->bytes_per_read, src);
//gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
src->curoffset += GST_BUFFER_SIZE (buf);
if (src->new_seek) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLUSH);
GST_DEBUG (0,"new seek\n");
src->new_seek = FALSE;
}
/* we're done, return the buffer */
return buf;
}
/* open the file and mmap it, necessary to go to READY state */
static gboolean
gst_disksrc_open_file (GstDiskSrc *src)
{
g_return_val_if_fail (!GST_FLAG_IS_SET (src ,GST_DISKSRC_OPEN), FALSE);
/* open the file */
src->fd = open (src->filename, O_RDONLY);
if (src->fd < 0) {
perror ("open");
gst_element_error (GST_ELEMENT (src), g_strconcat("opening file \"", src->filename, "\"", NULL));
return FALSE;
} else {
/* find the file length */
src->size = lseek (src->fd, 0, SEEK_END);
lseek (src->fd, 0, SEEK_SET);
/* map the file into memory */
src->map = mmap (NULL, src->size, PROT_READ, MAP_SHARED, src->fd, 0);
/* collapse state if that failed */
if (src->map == MAP_FAILED) {
perror ("disksrc:mmap");
close (src->fd);
gst_element_error (GST_ELEMENT (src),"mmapping file");
return FALSE;
}
madvise (src->map,src->size, 2);
GST_FLAG_SET (src, GST_DISKSRC_OPEN);
src->new_seek = TRUE;
}
return TRUE;
GST_DEBUG(0, "opened file %s\n",src->filename);
}
/* unmap and close the file */
static void
gst_disksrc_close_file (GstDiskSrc *src)
{
g_return_if_fail (GST_FLAG_IS_SET (src, GST_DISKSRC_OPEN));
/* unmap the file from memory */
munmap (src->map, src->size);
/* close the file */
close (src->fd);
/* zero out a lot of our state */
src->fd = 0;
src->size = 0;
src->map = NULL;
src->curoffset = 0;
src->seq = 0;
src->new_seek = FALSE;
GST_FLAG_UNSET (src, GST_DISKSRC_OPEN);
}
static GstElementStateReturn
gst_disksrc_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_DISKSRC (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_DISKSRC_OPEN))
gst_disksrc_close_file (GST_DISKSRC (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_DISKSRC_OPEN)) {
if (!gst_disksrc_open_file (GST_DISKSRC (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}

92
gst/elements/gstdisksrc.h
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@ -1,92 +0,0 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstdisksrc.h:
*
* 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.
*/
#ifndef __GST_DISKSRC_H__
#define __GST_DISKSRC_H__
#include <gst/gst.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
GstElementDetails gst_disksrc_details;
#define GST_TYPE_DISKSRC \
(gst_disksrc_get_type())
#define GST_DISKSRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISKSRC,GstDiskSrc))
#define GST_DISKSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DISKSRC,GstDiskSrcClass))
#define GST_IS_DISKSRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISKSRC))
#define GST_IS_DISKSRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DISKSRC))
typedef enum {
GST_DISKSRC_OPEN = GST_ELEMENT_FLAG_LAST,
GST_DISKSRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2,
} GstDiskSrcFlags;
typedef struct _GstDiskSrc GstDiskSrc;
typedef struct _GstDiskSrcClass GstDiskSrcClass;
struct _GstDiskSrc {
GstElement element;
/* pads */
GstPad *srcpad;
/* filename */
gchar *filename;
/* fd */
gint fd;
GstBufferPool *bufferpool;
/* mapping parameters */
gulong size; /* how long is the file? */
guchar *map; /* where the file is mapped to */
/* details for fallback synchronous read */
gulong curoffset; /* current offset in file */
gulong bytes_per_read; /* bytes per read */
gboolean new_seek;
gulong seq; /* buffer sequence number */
};
struct _GstDiskSrcClass {
GstElementClass parent_class;
};
GType gst_disksrc_get_type(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_DISKSRC_H__ */

383
plugins/elements/gstdisksrc.c
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@ -1,383 +0,0 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstdisksrc.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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
//#define GST_DEBUG_ENABLED
#include "gstdisksrc.h"
GstElementDetails gst_disksrc_details = {
"Disk Source",
"Source/File",
"Read from arbitrary point in a file",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
/* DiskSrc signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOCATION,
ARG_BYTESPERREAD,
ARG_OFFSET,
ARG_FILESIZE,
};
static void gst_disksrc_class_init (GstDiskSrcClass *klass);
static void gst_disksrc_init (GstDiskSrc *disksrc);
static void gst_disksrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_disksrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstBuffer* gst_disksrc_get (GstPad *pad);
static GstBufferPool* gst_disksrc_get_bufferpool (GstPad *pad);
static GstElementStateReturn
gst_disksrc_change_state (GstElement *element);
static gboolean gst_disksrc_open_file (GstDiskSrc *src);
static void gst_disksrc_close_file (GstDiskSrc *src);
static GstElementClass* parent_class = NULL;
//static guint gst_disksrc_signals[LAST_SIGNAL] = { 0 };
GType
gst_disksrc_get_type(void)
{
static GType disksrc_type = 0;
if (!disksrc_type) {
static const GTypeInfo disksrc_info = {
sizeof(GstDiskSrcClass), NULL,
NULL,
(GClassInitFunc)gst_disksrc_class_init,
NULL,
NULL,
sizeof(GstDiskSrc),
0,
(GInstanceInitFunc)gst_disksrc_init,
};
disksrc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstDiskSrc", &disksrc_info, 0);
}
return disksrc_type;
}
static void
gst_disksrc_class_init (GstDiskSrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gst_element_install_std_props (
GST_ELEMENT_CLASS (klass),
"location", ARG_LOCATION, G_PARAM_READWRITE,
"bytesperread", ARG_BYTESPERREAD, G_PARAM_READWRITE,
"offset", ARG_OFFSET, G_PARAM_READWRITE,
"filesize", ARG_FILESIZE, G_PARAM_READABLE,
NULL);
gobject_class->set_property = gst_disksrc_set_property;
gobject_class->get_property = gst_disksrc_get_property;
gstelement_class->change_state = gst_disksrc_change_state;
}
static void
gst_disksrc_init (GstDiskSrc *disksrc)
{
// GST_FLAG_SET (disksrc, GST_SRC_);
disksrc->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_pad_set_get_function (disksrc->srcpad, gst_disksrc_get);
gst_pad_set_bufferpool_function (disksrc->srcpad, gst_disksrc_get_bufferpool);
gst_element_add_pad (GST_ELEMENT (disksrc), disksrc->srcpad);
disksrc->filename = NULL;
disksrc->fd = 0;
disksrc->size = 0;
disksrc->map = NULL;
disksrc->curoffset = 0;
disksrc->bytes_per_read = 4096;
disksrc->seq = 0;
disksrc->new_seek = FALSE;
}
static void
gst_disksrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstDiskSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DISKSRC (object));
src = GST_DISKSRC (object);
switch (prop_id) {
case ARG_LOCATION:
/* the element must be stopped or paused in order to do this */
g_return_if_fail ((GST_STATE (src) < GST_STATE_PLAYING)
|| (GST_STATE (src) == GST_STATE_PAUSED));
if (src->filename) g_free (src->filename);
/* clear the filename if we get a NULL (is that possible?) */
if (g_value_get_string (value) == NULL) {
gst_element_set_state (GST_ELEMENT (object), GST_STATE_NULL);
src->filename = NULL;
/* otherwise set the new filename */
} else {
src->filename = g_strdup (g_value_get_string (value));
}
if ((GST_STATE (src) == GST_STATE_PAUSED) && (src->filename != NULL))
{
gst_disksrc_close_file(src);
gst_disksrc_open_file(src);
}
break;
case ARG_BYTESPERREAD:
src->bytes_per_read = g_value_get_int (value);
break;
case ARG_OFFSET:
src->curoffset = g_value_get_long (value);
src->new_seek = TRUE;
break;
default:
break;
}
}
static void
gst_disksrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstDiskSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DISKSRC (object));
src = GST_DISKSRC (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, src->filename);
break;
case ARG_BYTESPERREAD:
g_value_set_int (value, src->bytes_per_read);
break;
case ARG_OFFSET:
g_value_set_long (value, src->curoffset);
break;
case ARG_FILESIZE:
g_value_set_long (value, src->size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstBuffer*
gst_disksrc_buffer_new (GstBufferPool *pool, gint64 location, gint size, gpointer user_data)
{
GstDiskSrc *src;
GstBuffer *buf;
src = GST_DISKSRC (user_data);
buf = gst_buffer_new ();
g_return_val_if_fail (buf != NULL, NULL);
/* simply set the buffer to point to the correct region of the file */
GST_BUFFER_DATA (buf) = src->map + location;
GST_BUFFER_OFFSET (buf) = location;
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_DONTFREE);
if ((location + size) > src->size)
GST_BUFFER_SIZE (buf) = src->size - location;
else
GST_BUFFER_SIZE (buf) = size;
GST_DEBUG (0,"map %p, offset %ld (%p), size %d\n", src->map, src->curoffset,
src->map + src->curoffset, GST_BUFFER_SIZE (buf));
return buf;
}
static void
gst_disksrc_buffer_free (GstBuffer *buf)
{
// FIXME do something here
}
static GstBufferPool*
gst_disksrc_get_bufferpool (GstPad *pad)
{
GstDiskSrc *src;
src = GST_DISKSRC (gst_pad_get_parent (pad));
if (!src->bufferpool) {
src->bufferpool = gst_buffer_pool_new ();
gst_buffer_pool_set_buffer_new_function (src->bufferpool, gst_disksrc_buffer_new);
gst_buffer_pool_set_buffer_free_function (src->bufferpool, gst_disksrc_buffer_free);
gst_buffer_pool_set_user_data (src->bufferpool, src);
}
return src->bufferpool;
}
/**
* gst_disksrc_get:
* @pad: #GstPad to push a buffer from
*
* Push a new buffer from the disksrc at the current offset.
*/
static GstBuffer *
gst_disksrc_get (GstPad *pad)
{
GstDiskSrc *src;
GstBuffer *buf;
g_return_val_if_fail (pad != NULL, NULL);
src = GST_DISKSRC (gst_pad_get_parent (pad));
g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_DISKSRC_OPEN), NULL);
/* deal with EOF state */
if (src->curoffset >= src->size) {
GST_DEBUG (0,"map offset %ld >= size %ld --> eos\n", src->curoffset, src->size);
return GST_BUFFER(gst_event_new (GST_EVENT_EOS));
}
// FIXME use a bufferpool
buf = gst_disksrc_buffer_new (NULL, src->curoffset, src->bytes_per_read, src);
//gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
src->curoffset += GST_BUFFER_SIZE (buf);
if (src->new_seek) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLUSH);
GST_DEBUG (0,"new seek\n");
src->new_seek = FALSE;
}
/* we're done, return the buffer */
return buf;
}
/* open the file and mmap it, necessary to go to READY state */
static gboolean
gst_disksrc_open_file (GstDiskSrc *src)
{
g_return_val_if_fail (!GST_FLAG_IS_SET (src ,GST_DISKSRC_OPEN), FALSE);
/* open the file */
src->fd = open (src->filename, O_RDONLY);
if (src->fd < 0) {
perror ("open");
gst_element_error (GST_ELEMENT (src), g_strconcat("opening file \"", src->filename, "\"", NULL));
return FALSE;
} else {
/* find the file length */
src->size = lseek (src->fd, 0, SEEK_END);
lseek (src->fd, 0, SEEK_SET);
/* map the file into memory */
src->map = mmap (NULL, src->size, PROT_READ, MAP_SHARED, src->fd, 0);
/* collapse state if that failed */
if (src->map == MAP_FAILED) {
perror ("disksrc:mmap");
close (src->fd);
gst_element_error (GST_ELEMENT (src),"mmapping file");
return FALSE;
}
madvise (src->map,src->size, 2);
GST_FLAG_SET (src, GST_DISKSRC_OPEN);
src->new_seek = TRUE;
}
return TRUE;
GST_DEBUG(0, "opened file %s\n",src->filename);
}
/* unmap and close the file */
static void
gst_disksrc_close_file (GstDiskSrc *src)
{
g_return_if_fail (GST_FLAG_IS_SET (src, GST_DISKSRC_OPEN));
/* unmap the file from memory */
munmap (src->map, src->size);
/* close the file */
close (src->fd);
/* zero out a lot of our state */
src->fd = 0;
src->size = 0;
src->map = NULL;
src->curoffset = 0;
src->seq = 0;
src->new_seek = FALSE;
GST_FLAG_UNSET (src, GST_DISKSRC_OPEN);
}
static GstElementStateReturn
gst_disksrc_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_DISKSRC (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_DISKSRC_OPEN))
gst_disksrc_close_file (GST_DISKSRC (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_DISKSRC_OPEN)) {
if (!gst_disksrc_open_file (GST_DISKSRC (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}

92
plugins/elements/gstdisksrc.h
View file

@ -1,92 +0,0 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstdisksrc.h:
*
* 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.
*/
#ifndef __GST_DISKSRC_H__
#define __GST_DISKSRC_H__
#include <gst/gst.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
GstElementDetails gst_disksrc_details;
#define GST_TYPE_DISKSRC \
(gst_disksrc_get_type())
#define GST_DISKSRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DISKSRC,GstDiskSrc))
#define GST_DISKSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DISKSRC,GstDiskSrcClass))
#define GST_IS_DISKSRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DISKSRC))
#define GST_IS_DISKSRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DISKSRC))
typedef enum {
GST_DISKSRC_OPEN = GST_ELEMENT_FLAG_LAST,
GST_DISKSRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2,
} GstDiskSrcFlags;
typedef struct _GstDiskSrc GstDiskSrc;
typedef struct _GstDiskSrcClass GstDiskSrcClass;
struct _GstDiskSrc {
GstElement element;
/* pads */
GstPad *srcpad;
/* filename */
gchar *filename;
/* fd */
gint fd;
GstBufferPool *bufferpool;
/* mapping parameters */
gulong size; /* how long is the file? */
guchar *map; /* where the file is mapped to */
/* details for fallback synchronous read */
gulong curoffset; /* current offset in file */
gulong bytes_per_read; /* bytes per read */
gboolean new_seek;
gulong seq; /* buffer sequence number */
};
struct _GstDiskSrcClass {
GstElementClass parent_class;
};
GType gst_disksrc_get_type(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_DISKSRC_H__ */