+++ /dev/null
-/* 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;
-}
+++ /dev/null
-/* 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__ */
+++ /dev/null
-/* 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;
-}
+++ /dev/null
-/* 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__ */
projects / platform / upstream / gstreamer.git / commitdiff