gstreamer/gst/elements/gstfilesink.c

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstfilesink.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 <gst/gst.h>
#include <errno.h>
#include "gstfilesink.h"
#include <string.h>
GstElementDetails gst_filesink_details = {
"File Sink",
"Sink/File",
"LGPL",
"Write stream to a file",
VERSION,
"Thomas <thomas@apestaart.org>",
"(C) 2001"
};
/* FileSink signals and args */
enum {
/* FILL ME */
SIGNAL_HANDOFF,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOCATION,
ARG_MAXFILESIZE,
};
GST_EVENT_MASK_FUNCTION (gst_filesink_get_event_mask,
{ GST_EVENT_SEEK, GST_SEEK_METHOD_CUR |
GST_SEEK_METHOD_SET |
GST_SEEK_METHOD_END |
GST_SEEK_FLAG_FLUSH },
{ GST_EVENT_FLUSH, 0 },
{ GST_EVENT_DISCONTINUOUS, 0 },
{ GST_EVENT_NEW_MEDIA, 0 }
)
static void gst_filesink_class_init (GstFileSinkClass *klass);
static void gst_filesink_init (GstFileSink *filesink);
static void gst_filesink_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_filesink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static gboolean gst_filesink_open_file (GstFileSink *sink);
static void gst_filesink_close_file (GstFileSink *sink);
static gboolean gst_filesink_handle_event (GstPad *pad, GstEvent *event);
static void gst_filesink_chain (GstPad *pad,GstBuffer *buf);
static GstElementStateReturn gst_filesink_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
static guint gst_filesink_signals[LAST_SIGNAL] = { 0 };
GType
gst_filesink_get_type (void)
{
static GType filesink_type = 0;
if (!filesink_type) {
static const GTypeInfo filesink_info = {
sizeof(GstFileSinkClass), NULL,
NULL,
(GClassInitFunc)gst_filesink_class_init,
NULL,
NULL,
sizeof(GstFileSink),
0,
(GInstanceInitFunc)gst_filesink_init,
};
filesink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstFileSink", &filesink_info, 0);
}
return filesink_type;
}
static void
gst_filesink_class_init (GstFileSinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOCATION,
g_param_spec_string ("location", "File Location", "Location of the file to write",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MAXFILESIZE,
g_param_spec_int ("maxfilesize", "MaxFileSize", "Maximum Size Per File in MB (-1 == no limit)",
-1, G_MAXINT, -1, G_PARAM_READWRITE));
gst_filesink_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstFileSinkClass, handoff), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gobject_class->set_property = gst_filesink_set_property;
gobject_class->get_property = gst_filesink_get_property;
gstelement_class->change_state = gst_filesink_change_state;
}
static void
gst_filesink_init (GstFileSink *filesink)
{
GstPad *pad;
pad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (filesink), pad);
gst_pad_set_chain_function (pad, gst_filesink_chain);
GST_FLAG_SET (GST_ELEMENT(filesink), GST_ELEMENT_EVENT_AWARE);
gst_pad_set_event_function(pad, gst_filesink_handle_event);
gst_pad_set_event_mask_function(pad, gst_filesink_get_event_mask);
filesink->filename = NULL;
filesink->file = NULL;
filesink->filenum = 0;
filesink->maxfilesize = -1;
}
static char *
gst_filesink_getcurrentfilename (GstFileSink *filesink)
{
g_return_val_if_fail(filesink != NULL, NULL);
g_return_val_if_fail(GST_IS_FILESINK(filesink), NULL);
if (filesink->filename == NULL) return NULL;
g_return_val_if_fail(filesink->filenum >= 0, NULL);
if (!strstr(filesink->filename, "%"))
{
if (!filesink->filenum)
return g_strdup(filesink->filename);
else
return NULL;
}
return g_strdup_printf(filesink->filename, filesink->filenum);
}
static void
gst_filesink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstFileSink *sink;
/* it's not null if we got it, but it might not be ours */
sink = GST_FILESINK (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 (sink) < GST_STATE_PLAYING)
|| (GST_STATE (sink) == GST_STATE_PAUSED));
if (sink->filename)
g_free (sink->filename);
sink->filename = g_strdup (g_value_get_string (value));
if ( (GST_STATE (sink) == GST_STATE_PAUSED)
&& (sink->filename != NULL))
{
gst_filesink_close_file (sink);
gst_filesink_open_file (sink);
}
break;
case ARG_MAXFILESIZE:
sink->maxfilesize = g_value_get_int(value);
break;
default:
break;
}
}
static void
gst_filesink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstFileSink *sink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FILESINK (object));
sink = GST_FILESINK (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, gst_filesink_getcurrentfilename(sink));
break;
case ARG_MAXFILESIZE:
g_value_set_int (value, sink->maxfilesize);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_filesink_open_file (GstFileSink *sink)
{
g_return_val_if_fail (!GST_FLAG_IS_SET (sink, GST_FILESINK_OPEN), FALSE);
/* open the file */
if (!gst_filesink_getcurrentfilename(sink))
{
/* Out of files */
return FALSE;
}
sink->file = fopen (gst_filesink_getcurrentfilename(sink), "w");
if (sink->file == NULL) {
perror ("open");
gst_element_error (GST_ELEMENT (sink), g_strconcat("Error opening file \"",
gst_filesink_getcurrentfilename(sink), "\": ", g_strerror(errno), NULL));
return FALSE;
}
GST_FLAG_SET (sink, GST_FILESINK_OPEN);
sink->data_written = 0;
return TRUE;
}
static void
gst_filesink_close_file (GstFileSink *sink)
{
g_return_if_fail (GST_FLAG_IS_SET (sink, GST_FILESINK_OPEN));
if (fclose (sink->file) != 0)
{
perror ("close");
gst_element_error (GST_ELEMENT (sink), g_strconcat("Error closing file \"",
gst_filesink_getcurrentfilename(sink), "\": ", g_strerror(errno), NULL));
}
else {
GST_FLAG_UNSET (sink, GST_FILESINK_OPEN);
}
}
/* handle events (search) */
static gboolean
gst_filesink_handle_event (GstPad *pad, GstEvent *event)
{
GstEventType type;
GstFileSink *filesink;
filesink = GST_FILESINK (gst_pad_get_parent (pad));
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_SEEK:
/* we need to seek */
if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH)
if (fflush(filesink->file))
gst_element_error(GST_ELEMENT(filesink),
"Error flushing the buffer cache of file \'%s\' to disk: %s",
gst_filesink_getcurrentfilename(filesink), g_strerror(errno));
if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES) {
g_warning("Any other then byte-offset seeking is not supported!\n");
}
switch (GST_EVENT_SEEK_METHOD(event))
{
case GST_SEEK_METHOD_SET:
fseek(filesink->file, GST_EVENT_SEEK_OFFSET(event), SEEK_SET);
break;
case GST_SEEK_METHOD_CUR:
fseek(filesink->file, GST_EVENT_SEEK_OFFSET(event), SEEK_CUR);
break;
case GST_SEEK_METHOD_END:
fseek(filesink->file, GST_EVENT_SEEK_OFFSET(event), SEEK_END);
break;
default:
g_warning("unkown seek method!\n");
break;
}
break;
case GST_EVENT_DISCONTINUOUS:
{
gint64 offset;
if (gst_event_discont_get_value (event, GST_FORMAT_BYTES, &offset))
fseek(filesink->file, offset, SEEK_SET);
gst_event_unref (event);
break;
}
case GST_EVENT_NEW_MEDIA:
/* we need to open a new file! */
gst_filesink_close_file(filesink);
filesink->filenum++;
if (!gst_filesink_open_file(filesink)) {
/* no more files, give EOS */
gst_element_set_eos(GST_ELEMENT(filesink));
return FALSE;
}
break;
case GST_EVENT_FLUSH:
if (fflush(filesink->file))
gst_element_error(GST_ELEMENT(filesink),
"Error flushing the buffer cache of file \'%s\' to disk: %s",
gst_filesink_getcurrentfilename(filesink), g_strerror(errno));
break;
default:
gst_pad_event_default (pad, event);
break;
}
return TRUE;
}
/**
* gst_filesink_chain:
* @pad: the pad this filesink is connected to
* @buf: the buffer that has to be absorbed
*
* take the buffer from the pad and write to file if it's open
*/
static void
gst_filesink_chain (GstPad *pad, GstBuffer *buf)
{
GstFileSink *filesink;
gint bytes_written = 0;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
filesink = GST_FILESINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT(buf))
{
gst_filesink_handle_event(pad, GST_EVENT(buf));
return;
}
if (filesink->maxfilesize > 0)
{
if ((filesink->data_written + GST_BUFFER_SIZE(buf))/(1024*1024) > filesink->maxfilesize)
{
if (GST_ELEMENT_IS_EVENT_AWARE(GST_ELEMENT(filesink)))
{
GstEvent *event;
event = gst_event_new(GST_EVENT_NEW_MEDIA);
gst_pad_send_event(pad, event);
}
}
}
if (GST_FLAG_IS_SET (filesink, GST_FILESINK_OPEN))
{
bytes_written = fwrite (GST_BUFFER_DATA (buf), 1, GST_BUFFER_SIZE (buf), filesink->file);
if (bytes_written < GST_BUFFER_SIZE (buf))
{
printf ("filesink : Warning : %d bytes should be written, only %d bytes written\n",
GST_BUFFER_SIZE (buf), bytes_written);
}
}
filesink->data_written += GST_BUFFER_SIZE(buf);
gst_buffer_unref (buf);
g_signal_emit (G_OBJECT (filesink), gst_filesink_signals[SIGNAL_HANDOFF], 0,
filesink);
}
static GstElementStateReturn
gst_filesink_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_FILESINK (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_FILESINK_OPEN))
gst_filesink_close_file (GST_FILESINK (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_FILESINK_OPEN)) {
if (!gst_filesink_open_file (GST_FILESINK (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;
}