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gstreamer/plugins/elements/gstfilesink.c
Mathieu Duponchelle 710ce84d0c filesink: port over unlock code from fdsink 
See also: 5216322d39

The previous code was causing "random" flushing returns
in scenarios with intensive state changes such as within
a buffering pipeline.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/476>
2020-05-20 14:10:14 +00:00

1158 lines
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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2006 Wim Taymans <wim@fluendo.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-filesink
* @title: filesink
* @see_also: #GstFileSrc
*
* Write incoming data to a file in the local file system.
*
* ## Example launch line
* |[
* gst-launch-1.0 v4l2src num-buffers=1 ! jpegenc ! filesink location=capture1.jpeg
* ]| Capture one frame from a v4l2 camera and save as jpeg image.
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "../../gst/gst-i18n-lib.h"
#include <gst/gst.h>
#include <stdio.h> /* for fseeko() */
#ifdef HAVE_STDIO_EXT_H
#include <stdio_ext.h> /* for __fbufsize, for debugging */
#endif
#include <errno.h>
#include "gstfilesink.h"
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef G_OS_WIN32
#include <io.h> /* lseek, open, close, read */
#undef lseek
#define lseek _lseeki64
#undef off_t
#define off_t guint64
#undef ftruncate
#define ftruncate _chsize
#undef fsync
#define fsync _commit
#ifdef _MSC_VER /* Check if we are using MSVC, fileno is deprecated in favour */
#define fileno _fileno /* of _fileno */
#endif
#endif
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "gstelements_private.h"
#include "gstfilesink.h"
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
#define GST_TYPE_FILE_SINK_BUFFER_MODE (gst_file_sink_buffer_mode_get_type ())
static GType
gst_file_sink_buffer_mode_get_type (void)
{
static GType buffer_mode_type = 0;
static const GEnumValue buffer_mode[] = {
{GST_FILE_SINK_BUFFER_MODE_DEFAULT, "Default buffering", "default"},
{GST_FILE_SINK_BUFFER_MODE_FULL, "Fully buffered", "full"},
{GST_FILE_SINK_BUFFER_MODE_LINE, "Line buffered (deprecated, like full)",
"line"},
{GST_FILE_SINK_BUFFER_MODE_UNBUFFERED, "Unbuffered", "unbuffered"},
{0, NULL, NULL},
};
if (!buffer_mode_type) {
buffer_mode_type =
g_enum_register_static ("GstFileSinkBufferMode", buffer_mode);
}
return buffer_mode_type;
}
GST_DEBUG_CATEGORY_STATIC (gst_file_sink_debug);
#define GST_CAT_DEFAULT gst_file_sink_debug
#define DEFAULT_LOCATION NULL
#define DEFAULT_BUFFER_MODE GST_FILE_SINK_BUFFER_MODE_DEFAULT
#define DEFAULT_BUFFER_SIZE 64 * 1024
#define DEFAULT_APPEND FALSE
#define DEFAULT_O_SYNC FALSE
#define DEFAULT_MAX_TRANSIENT_ERROR_TIMEOUT 0
enum
{
PROP_0,
PROP_LOCATION,
PROP_BUFFER_MODE,
PROP_BUFFER_SIZE,
PROP_APPEND,
PROP_O_SYNC,
PROP_MAX_TRANSIENT_ERROR_TIMEOUT,
PROP_LAST
};
/* Copy of glib's g_fopen due to win32 libc/cross-DLL brokenness: we can't
* use the 'file pointer' opened in glib (and returned from this function)
* in this library, as they may have unrelated C runtimes. */
static FILE *
gst_fopen (const gchar * filename, const gchar * mode, gboolean o_sync)
{
FILE *retval;
#ifdef G_OS_WIN32
wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
wchar_t *wmode;
int save_errno;
if (wfilename == NULL) {
errno = EINVAL;
return NULL;
}
wmode = g_utf8_to_utf16 (mode, -1, NULL, NULL, NULL);
if (wmode == NULL) {
g_free (wfilename);
errno = EINVAL;
return NULL;
}
retval = _wfopen (wfilename, wmode);
save_errno = errno;
g_free (wfilename);
g_free (wmode);
errno = save_errno;
return retval;
#else
int fd;
int flags = O_CREAT | O_WRONLY;
if (strcmp (mode, "wb") == 0)
flags |= O_TRUNC;
else if (strcmp (mode, "ab") == 0)
flags |= O_APPEND;
else
g_assert_not_reached ();
if (o_sync)
flags |= O_SYNC;
fd = open (filename, flags, 0666);
retval = fdopen (fd, mode);
return retval;
#endif
}
static void gst_file_sink_dispose (GObject * object);
static void gst_file_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_file_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_file_sink_open_file (GstFileSink * sink);
static void gst_file_sink_close_file (GstFileSink * sink);
static gboolean gst_file_sink_start (GstBaseSink * sink);
static gboolean gst_file_sink_stop (GstBaseSink * sink);
static gboolean gst_file_sink_event (GstBaseSink * sink, GstEvent * event);
static GstFlowReturn gst_file_sink_render (GstBaseSink * sink,
GstBuffer * buffer);
static GstFlowReturn gst_file_sink_render_list (GstBaseSink * sink,
GstBufferList * list);
static gboolean gst_file_sink_unlock (GstBaseSink * sink);
static gboolean gst_file_sink_unlock_stop (GstBaseSink * sink);
static gboolean gst_file_sink_do_seek (GstFileSink * filesink,
guint64 new_offset);
static gboolean gst_file_sink_get_current_offset (GstFileSink * filesink,
guint64 * p_pos);
static gboolean gst_file_sink_query (GstBaseSink * bsink, GstQuery * query);
static void gst_file_sink_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static GstFlowReturn gst_file_sink_flush_buffer (GstFileSink * filesink);
#define _do_init \
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_file_sink_uri_handler_init); \
GST_DEBUG_CATEGORY_INIT (gst_file_sink_debug, "filesink", 0, "filesink element");
#define gst_file_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstFileSink, gst_file_sink, GST_TYPE_BASE_SINK,
_do_init);
static void
gst_file_sink_class_init (GstFileSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS (klass);
gobject_class->dispose = gst_file_sink_dispose;
gobject_class->set_property = gst_file_sink_set_property;
gobject_class->get_property = gst_file_sink_get_property;
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "File Location",
"Location of the file to write", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFER_MODE,
g_param_spec_enum ("buffer-mode", "Buffering mode",
"The buffering mode to use", GST_TYPE_FILE_SINK_BUFFER_MODE,
DEFAULT_BUFFER_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BUFFER_SIZE,
g_param_spec_uint ("buffer-size", "Buffering size",
"Size of buffer in number of bytes for line or full buffer-mode", 0,
G_MAXUINT, DEFAULT_BUFFER_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstFileSink:append
*
* Append to an already existing file.
*/
g_object_class_install_property (gobject_class, PROP_APPEND,
g_param_spec_boolean ("append", "Append",
"Append to an already existing file", DEFAULT_APPEND,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_O_SYNC,
g_param_spec_boolean ("o-sync", "Synchronous IO",
"Open the file with O_SYNC for enabling synchronous IO",
DEFAULT_O_SYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_MAX_TRANSIENT_ERROR_TIMEOUT,
g_param_spec_int ("max-transient-error-timeout",
"Max Transient Error Timeout",
"Retry up to this many ms on transient errors (currently EACCES)", 0,
G_MAXINT, DEFAULT_MAX_TRANSIENT_ERROR_TIMEOUT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (gstelement_class,
"File Sink",
"Sink/File", "Write stream to a file",
"Thomas Vander Stichele <thomas at apestaart dot org>");
gst_element_class_add_static_pad_template (gstelement_class, &sinktemplate);
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_file_sink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_file_sink_stop);
gstbasesink_class->query = GST_DEBUG_FUNCPTR (gst_file_sink_query);
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_file_sink_render);
gstbasesink_class->render_list =
GST_DEBUG_FUNCPTR (gst_file_sink_render_list);
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_file_sink_event);
gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_file_sink_unlock);
gstbasesink_class->unlock_stop =
GST_DEBUG_FUNCPTR (gst_file_sink_unlock_stop);
if (sizeof (off_t) < 8) {
GST_LOG ("No large file support, sizeof (off_t) = %" G_GSIZE_FORMAT "!",
sizeof (off_t));
}
}
static void
gst_file_sink_init (GstFileSink * filesink)
{
filesink->filename = NULL;
filesink->file = NULL;
filesink->current_pos = 0;
filesink->buffer_mode = DEFAULT_BUFFER_MODE;
filesink->buffer_size = DEFAULT_BUFFER_SIZE;
filesink->append = FALSE;
gst_base_sink_set_sync (GST_BASE_SINK (filesink), FALSE);
}
static void
gst_file_sink_dispose (GObject * object)
{
GstFileSink *sink = GST_FILE_SINK (object);
G_OBJECT_CLASS (parent_class)->dispose (object);
g_free (sink->uri);
sink->uri = NULL;
g_free (sink->filename);
sink->filename = NULL;
}
static gboolean
gst_file_sink_set_location (GstFileSink * sink, const gchar * location,
GError ** error)
{
if (sink->file)
goto was_open;
g_free (sink->filename);
g_free (sink->uri);
if (location != NULL) {
/* we store the filename as we received it from the application. On Windows
* this should be in UTF8 */
sink->filename = g_strdup (location);
sink->uri = gst_filename_to_uri (location, NULL);
GST_INFO_OBJECT (sink, "filename : %s", sink->filename);
GST_INFO_OBJECT (sink, "uri : %s", sink->uri);
} else {
sink->filename = NULL;
sink->uri = NULL;
}
return TRUE;
/* ERRORS */
was_open:
{
g_warning ("Changing the `location' property on filesink when a file is "
"open is not supported.");
g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_STATE,
"Changing the 'location' property on filesink when a file is "
"open is not supported");
return FALSE;
}
}
static void
gst_file_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFileSink *sink = GST_FILE_SINK (object);
switch (prop_id) {
case PROP_LOCATION:
gst_file_sink_set_location (sink, g_value_get_string (value), NULL);
break;
case PROP_BUFFER_MODE:
sink->buffer_mode = g_value_get_enum (value);
break;
case PROP_BUFFER_SIZE:
sink->buffer_size = g_value_get_uint (value);
break;
case PROP_APPEND:
sink->append = g_value_get_boolean (value);
break;
case PROP_O_SYNC:
sink->o_sync = g_value_get_boolean (value);
break;
case PROP_MAX_TRANSIENT_ERROR_TIMEOUT:
sink->max_transient_error_timeout = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_file_sink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstFileSink *sink = GST_FILE_SINK (object);
switch (prop_id) {
case PROP_LOCATION:
g_value_set_string (value, sink->filename);
break;
case PROP_BUFFER_MODE:
g_value_set_enum (value, sink->buffer_mode);
break;
case PROP_BUFFER_SIZE:
g_value_set_uint (value, sink->buffer_size);
break;
case PROP_APPEND:
g_value_set_boolean (value, sink->append);
break;
case PROP_O_SYNC:
g_value_set_boolean (value, sink->o_sync);
break;
case PROP_MAX_TRANSIENT_ERROR_TIMEOUT:
g_value_set_int (value, sink->max_transient_error_timeout);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_file_sink_open_file (GstFileSink * sink)
{
/* open the file */
if (sink->filename == NULL || sink->filename[0] == '\0')
goto no_filename;
if (sink->append)
sink->file = gst_fopen (sink->filename, "ab", sink->o_sync);
else
sink->file = gst_fopen (sink->filename, "wb", sink->o_sync);
if (sink->file == NULL)
goto open_failed;
sink->current_pos = 0;
/* try to seek in the file to figure out if it is seekable */
sink->seekable = gst_file_sink_do_seek (sink, 0);
if (sink->buffer)
g_free (sink->buffer);
sink->buffer = NULL;
if (sink->buffer_list)
gst_buffer_list_unref (sink->buffer_list);
sink->buffer_list = NULL;
if (sink->buffer_mode != GST_FILE_SINK_BUFFER_MODE_UNBUFFERED) {
if (sink->buffer_size == 0) {
sink->buffer_size = DEFAULT_BUFFER_SIZE;
g_object_notify (G_OBJECT (sink), "buffer-size");
}
if (sink->buffer_mode == GST_FILE_SINK_BUFFER_MODE_FULL) {
sink->buffer = g_malloc (sink->buffer_size);
sink->allocated_buffer_size = sink->buffer_size;
} else {
sink->buffer_list = gst_buffer_list_new ();
}
sink->current_buffer_size = 0;
}
GST_DEBUG_OBJECT (sink, "opened file %s, seekable %d",
sink->filename, sink->seekable);
return TRUE;
/* ERRORS */
no_filename:
{
GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND,
(_("No file name specified for writing.")), (NULL));
return FALSE;
}
open_failed:
{
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(_("Could not open file \"%s\" for writing."), sink->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
}
static void
gst_file_sink_close_file (GstFileSink * sink)
{
if (sink->file) {
if (gst_file_sink_flush_buffer (sink) != GST_FLOW_OK)
GST_ELEMENT_ERROR (sink, RESOURCE, CLOSE,
(_("Error closing file \"%s\"."), sink->filename), NULL);
if (fclose (sink->file) != 0)
GST_ELEMENT_ERROR (sink, RESOURCE, CLOSE,
(_("Error closing file \"%s\"."), sink->filename), GST_ERROR_SYSTEM);
GST_DEBUG_OBJECT (sink, "closed file");
sink->file = NULL;
}
if (sink->buffer) {
g_free (sink->buffer);
sink->buffer = NULL;
}
sink->allocated_buffer_size = 0;
if (sink->buffer_list) {
gst_buffer_list_unref (sink->buffer_list);
sink->buffer_list = NULL;
}
sink->current_buffer_size = 0;
}
static gboolean
gst_file_sink_query (GstBaseSink * bsink, GstQuery * query)
{
gboolean res;
GstFileSink *self;
GstFormat format;
self = GST_FILE_SINK (bsink);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
gst_query_parse_position (query, &format, NULL);
switch (format) {
case GST_FORMAT_DEFAULT:
case GST_FORMAT_BYTES:
gst_query_set_position (query, GST_FORMAT_BYTES,
self->current_pos + self->current_buffer_size);
res = TRUE;
break;
default:
res = FALSE;
break;
}
break;
case GST_QUERY_FORMATS:
gst_query_set_formats (query, 2, GST_FORMAT_DEFAULT, GST_FORMAT_BYTES);
res = TRUE;
break;
case GST_QUERY_URI:
gst_query_set_uri (query, self->uri);
res = TRUE;
break;
case GST_QUERY_SEEKING:
gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
if (format == GST_FORMAT_BYTES || format == GST_FORMAT_DEFAULT) {
gst_query_set_seeking (query, GST_FORMAT_BYTES, self->seekable, 0, -1);
} else {
gst_query_set_seeking (query, format, FALSE, 0, -1);
}
res = TRUE;
break;
default:
res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
break;
}
return res;
}
#ifdef HAVE_FSEEKO
# define __GST_STDIO_SEEK_FUNCTION "fseeko"
#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
# define __GST_STDIO_SEEK_FUNCTION "lseek"
#else
# define __GST_STDIO_SEEK_FUNCTION "fseek"
#endif
static gboolean
gst_file_sink_do_seek (GstFileSink * filesink, guint64 new_offset)
{
GST_DEBUG_OBJECT (filesink, "Seeking to offset %" G_GUINT64_FORMAT
" using " __GST_STDIO_SEEK_FUNCTION, new_offset);
if (gst_file_sink_flush_buffer (filesink) != GST_FLOW_OK)
goto flush_buffer_failed;
#ifdef HAVE_FSEEKO
if (fseeko (filesink->file, (off_t) new_offset, SEEK_SET) != 0)
goto seek_failed;
#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
if (lseek (fileno (filesink->file), (off_t) new_offset,
SEEK_SET) == (off_t) - 1)
goto seek_failed;
#else
if (fseek (filesink->file, (long) new_offset, SEEK_SET) != 0)
goto seek_failed;
#endif
/* adjust position reporting after seek;
* presumably this should basically yield new_offset */
gst_file_sink_get_current_offset (filesink, &filesink->current_pos);
return TRUE;
/* ERRORS */
flush_buffer_failed:
{
GST_DEBUG_OBJECT (filesink, "Flushing buffer failed");
return FALSE;
}
seek_failed:
{
GST_DEBUG_OBJECT (filesink, "Seeking failed: %s", g_strerror (errno));
return FALSE;
}
}
/* handle events (search) */
static gboolean
gst_file_sink_event (GstBaseSink * sink, GstEvent * event)
{
GstEventType type;
GstFileSink *filesink;
filesink = GST_FILE_SINK (sink);
type = GST_EVENT_TYPE (event);
switch (type) {
case GST_EVENT_SEGMENT:
{
const GstSegment *segment;
gst_event_parse_segment (event, &segment);
if (segment->format == GST_FORMAT_BYTES) {
/* only try to seek and fail when we are going to a different
* position */
if (filesink->current_pos + filesink->current_buffer_size !=
segment->start) {
/* FIXME, the seek should be performed on the pos field, start/stop are
* just boundaries for valid bytes offsets. We should also fill the file
* with zeroes if the new position extends the current EOF (sparse streams
* and segment accumulation). */
if (!gst_file_sink_do_seek (filesink, (guint64) segment->start))
goto seek_failed;
} else {
GST_DEBUG_OBJECT (filesink, "Ignored SEGMENT, no seek needed");
}
} else {
GST_DEBUG_OBJECT (filesink,
"Ignored SEGMENT event of format %u (%s)", (guint) segment->format,
gst_format_get_name (segment->format));
}
break;
}
case GST_EVENT_FLUSH_STOP:
if (filesink->current_pos != 0 && filesink->seekable) {
gst_file_sink_do_seek (filesink, 0);
if (ftruncate (fileno (filesink->file), 0))
goto truncate_failed;
}
if (filesink->buffer_list) {
gst_buffer_list_unref (filesink->buffer_list);
filesink->buffer_list = gst_buffer_list_new ();
}
filesink->current_buffer_size = 0;
break;
case GST_EVENT_EOS:
if (gst_file_sink_flush_buffer (filesink) != GST_FLOW_OK)
goto flush_buffer_failed;
break;
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->event (sink, event);
/* ERRORS */
seek_failed:
{
GST_ELEMENT_ERROR (filesink, RESOURCE, SEEK,
(_("Error while seeking in file \"%s\"."), filesink->filename),
GST_ERROR_SYSTEM);
gst_event_unref (event);
return FALSE;
}
flush_buffer_failed:
{
GST_ELEMENT_ERROR (filesink, RESOURCE, WRITE,
(_("Error while writing to file \"%s\"."), filesink->filename), NULL);
gst_event_unref (event);
return FALSE;
}
truncate_failed:
{
GST_ELEMENT_ERROR (filesink, RESOURCE, WRITE,
(_("Error while writing to file \"%s\"."), filesink->filename),
GST_ERROR_SYSTEM);
gst_event_unref (event);
return FALSE;
}
}
static gboolean
gst_file_sink_get_current_offset (GstFileSink * filesink, guint64 * p_pos)
{
off_t ret = -1;
/* no need to flush internal buffer here as this is only called right
* after a seek. If this changes then the buffer should be flushed here
* too
*/
#ifdef HAVE_FTELLO
ret = ftello (filesink->file);
#elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
ret = lseek (fileno (filesink->file), 0, SEEK_CUR);
#else
ret = (off_t) ftell (filesink->file);
#endif
if (ret != (off_t) - 1)
*p_pos = (guint64) ret;
return (ret != (off_t) - 1);
}
static GstFlowReturn
gst_file_sink_render_list_internal (GstFileSink * sink,
GstBufferList * buffer_list)
{
GstFlowReturn flow;
guint num_buffers;
guint64 skip = 0;
num_buffers = gst_buffer_list_length (buffer_list);
if (num_buffers == 0)
goto no_data;
GST_DEBUG_OBJECT (sink,
"writing %u buffers at position %" G_GUINT64_FORMAT, num_buffers,
sink->current_pos);
for (;;) {
guint64 bytes_written = 0;
flow =
gst_writev_buffer_list (GST_OBJECT_CAST (sink), fileno (sink->file),
NULL, buffer_list, &bytes_written, skip,
sink->max_transient_error_timeout, sink->current_pos, &sink->flushing);
sink->current_pos += bytes_written;
skip += bytes_written;
if (flow != GST_FLOW_FLUSHING)
break;
flow = gst_base_sink_wait_preroll (GST_BASE_SINK (sink));
if (flow != GST_FLOW_OK)
return flow;
}
return flow;
no_data:
{
GST_LOG_OBJECT (sink, "empty buffer list");
return GST_FLOW_OK;
}
}
static GstFlowReturn
gst_file_sink_flush_buffer (GstFileSink * filesink)
{
GstFlowReturn flow_ret = GST_FLOW_OK;
GST_DEBUG_OBJECT (filesink, "Flushing out buffer of size %" G_GSIZE_FORMAT,
filesink->current_buffer_size);
if (filesink->buffer && filesink->current_buffer_size) {
guint64 skip = 0;
for (;;) {
guint64 bytes_written = 0;
flow_ret =
gst_writev_mem (GST_OBJECT_CAST (filesink), fileno (filesink->file),
NULL, filesink->buffer, filesink->current_buffer_size, &bytes_written,
skip, filesink->max_transient_error_timeout, filesink->current_pos,
&filesink->flushing);
filesink->current_pos += bytes_written;
skip += bytes_written;
if (flow_ret != GST_FLOW_FLUSHING)
break;
flow_ret = gst_base_sink_wait_preroll (GST_BASE_SINK (filesink));
if (flow_ret != GST_FLOW_OK)
break;
}
} else if (filesink->buffer_list && filesink->current_buffer_size) {
guint length;
length = gst_buffer_list_length (filesink->buffer_list);
if (length > 0) {
flow_ret =
gst_file_sink_render_list_internal (filesink, filesink->buffer_list);
/* Remove all buffers from the list but keep the list. This ensures that
* we don't re-allocate the array storing the buffers all the time */
gst_buffer_list_remove (filesink->buffer_list, 0, length);
}
}
filesink->current_buffer_size = 0;
return flow_ret;
}
static gboolean
has_sync_after_buffer (GstBuffer ** buffer, guint idx, gpointer user_data)
{
if (GST_BUFFER_FLAG_IS_SET (*buffer, GST_BUFFER_FLAG_SYNC_AFTER)) {
gboolean *sync_after = user_data;
*sync_after = TRUE;
return FALSE;
}
return TRUE;
}
static gboolean
accumulate_size (GstBuffer ** buffer, guint idx, gpointer user_data)
{
guint *size = user_data;
*size += gst_buffer_get_size (*buffer);
return TRUE;
}
static GstFlowReturn
render_buffer (GstFileSink * filesink, GstBuffer * buffer)
{
GstFlowReturn flow;
guint64 bytes_written = 0;
guint64 skip = 0;
for (;;) {
flow =
gst_writev_buffer (GST_OBJECT_CAST (filesink),
fileno (filesink->file), NULL, buffer, &bytes_written, skip,
filesink->max_transient_error_timeout, filesink->current_pos,
&filesink->flushing);
filesink->current_pos += bytes_written;
skip += bytes_written;
if (flow != GST_FLOW_FLUSHING)
break;
flow = gst_base_sink_wait_preroll (GST_BASE_SINK (filesink));
if (flow != GST_FLOW_OK)
break;
}
return flow;
}
static GstFlowReturn
gst_file_sink_render_list (GstBaseSink * bsink, GstBufferList * buffer_list)
{
GstFlowReturn flow;
GstFileSink *sink;
guint i, num_buffers;
gboolean sync_after = FALSE;
gint fsync_ret;
sink = GST_FILE_SINK_CAST (bsink);
num_buffers = gst_buffer_list_length (buffer_list);
if (num_buffers == 0)
goto no_data;
gst_buffer_list_foreach (buffer_list, has_sync_after_buffer, &sync_after);
if (sync_after || (!sink->buffer && !sink->buffer_list)) {
flow = gst_file_sink_flush_buffer (sink);
if (flow == GST_FLOW_OK)
flow = gst_file_sink_render_list_internal (sink, buffer_list);
} else {
guint size = 0;
gst_buffer_list_foreach (buffer_list, accumulate_size, &size);
GST_DEBUG_OBJECT (sink,
"Queueing buffer list of %u bytes (%u buffers) at offset %"
G_GUINT64_FORMAT, size, num_buffers,
sink->current_pos + sink->current_buffer_size);
if (sink->buffer) {
flow = GST_FLOW_OK;
for (i = 0; i < num_buffers && flow == GST_FLOW_OK; i++) {
GstBuffer *buffer = gst_buffer_list_get (buffer_list, i);
gsize buffer_size = gst_buffer_get_size (buffer);
if (sink->current_buffer_size + buffer_size >
sink->allocated_buffer_size) {
flow = gst_file_sink_flush_buffer (sink);
if (flow != GST_FLOW_OK)
return flow;
}
if (buffer_size > sink->allocated_buffer_size) {
GST_DEBUG_OBJECT (sink,
"writing buffer ( %" G_GSIZE_FORMAT
" bytes) at position %" G_GUINT64_FORMAT,
buffer_size, sink->current_pos);
flow = render_buffer (sink, buffer);
} else {
sink->current_buffer_size +=
gst_buffer_extract (buffer, 0,
sink->buffer + sink->current_buffer_size, buffer_size);
flow = GST_FLOW_OK;
}
}
} else {
for (i = 0; i < num_buffers; ++i)
gst_buffer_list_add (sink->buffer_list,
gst_buffer_ref (gst_buffer_list_get (buffer_list, i)));
sink->current_buffer_size += size;
if (sink->current_buffer_size > sink->buffer_size)
flow = gst_file_sink_flush_buffer (sink);
else
flow = GST_FLOW_OK;
}
}
if (flow == GST_FLOW_OK && sync_after) {
do {
fsync_ret = fsync (fileno (sink->file));
} while (fsync_ret < 0 && errno == EINTR);
if (fsync_ret) {
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
(_("Error while writing to file \"%s\"."), sink->filename),
("%s", g_strerror (errno)));
flow = GST_FLOW_ERROR;
}
}
return flow;
no_data:
{
GST_LOG_OBJECT (sink, "empty buffer list");
return GST_FLOW_OK;
}
}
static GstFlowReturn
gst_file_sink_render (GstBaseSink * sink, GstBuffer * buffer)
{
GstFileSink *filesink;
GstFlowReturn flow;
guint8 n_mem;
gboolean sync_after;
gint fsync_ret;
filesink = GST_FILE_SINK_CAST (sink);
sync_after = GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_SYNC_AFTER);
n_mem = gst_buffer_n_memory (buffer);
if (n_mem > 0 && (sync_after || (!filesink->buffer
&& !filesink->buffer_list))) {
flow = gst_file_sink_flush_buffer (filesink);
if (flow == GST_FLOW_OK) {
flow = render_buffer (filesink, buffer);
}
} else if (n_mem > 0) {
gsize size = gst_buffer_get_size (buffer);
GST_DEBUG_OBJECT (filesink,
"Queueing buffer of %" G_GSIZE_FORMAT " bytes at offset %"
G_GUINT64_FORMAT, size,
filesink->current_pos + filesink->current_buffer_size);
if (filesink->buffer) {
if (filesink->current_buffer_size + size >
filesink->allocated_buffer_size) {
flow = gst_file_sink_flush_buffer (filesink);
if (flow != GST_FLOW_OK)
return flow;
}
if (size > filesink->allocated_buffer_size) {
GST_DEBUG_OBJECT (sink,
"writing buffer ( %" G_GSIZE_FORMAT
" bytes) at position %" G_GUINT64_FORMAT,
size, filesink->current_pos);
flow = render_buffer (filesink, buffer);
} else {
filesink->current_buffer_size +=
gst_buffer_extract (buffer, 0,
filesink->buffer + filesink->current_buffer_size, size);
flow = GST_FLOW_OK;
}
} else {
filesink->current_buffer_size += gst_buffer_get_size (buffer);
gst_buffer_list_add (filesink->buffer_list, gst_buffer_ref (buffer));
if (filesink->current_buffer_size > filesink->buffer_size)
flow = gst_file_sink_flush_buffer (filesink);
else
flow = GST_FLOW_OK;
}
} else {
flow = GST_FLOW_OK;
}
if (flow == GST_FLOW_OK && sync_after) {
do {
fsync_ret = fsync (fileno (filesink->file));
} while (fsync_ret < 0 && errno == EINTR);
if (fsync_ret) {
GST_ELEMENT_ERROR (filesink, RESOURCE, WRITE,
(_("Error while writing to file \"%s\"."), filesink->filename),
("%s", g_strerror (errno)));
flow = GST_FLOW_ERROR;
}
}
return flow;
}
static gboolean
gst_file_sink_start (GstBaseSink * basesink)
{
GstFileSink *filesink;
filesink = GST_FILE_SINK_CAST (basesink);
g_atomic_int_set (&filesink->flushing, FALSE);
return gst_file_sink_open_file (filesink);
}
static gboolean
gst_file_sink_stop (GstBaseSink * basesink)
{
GstFileSink *filesink;
filesink = GST_FILE_SINK_CAST (basesink);
gst_file_sink_close_file (filesink);
return TRUE;
}
static gboolean
gst_file_sink_unlock (GstBaseSink * basesink)
{
GstFileSink *filesink;
filesink = GST_FILE_SINK_CAST (basesink);
g_atomic_int_set (&filesink->flushing, TRUE);
return TRUE;
}
static gboolean
gst_file_sink_unlock_stop (GstBaseSink * basesink)
{
GstFileSink *filesink;
filesink = GST_FILE_SINK_CAST (basesink);
g_atomic_int_set (&filesink->flushing, FALSE);
return TRUE;
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
gst_file_sink_uri_get_type (GType type)
{
return GST_URI_SINK;
}
static const gchar *const *
gst_file_sink_uri_get_protocols (GType type)
{
static const gchar *protocols[] = { "file", NULL };
return protocols;
}
static gchar *
gst_file_sink_uri_get_uri (GstURIHandler * handler)
{
GstFileSink *sink = GST_FILE_SINK (handler);
/* FIXME: make thread-safe */
return g_strdup (sink->uri);
}
static gboolean
gst_file_sink_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** error)
{
gchar *location;
gboolean ret;
GstFileSink *sink = GST_FILE_SINK (handler);
/* allow file://localhost/foo/bar by stripping localhost but fail
* for every other hostname */
if (g_str_has_prefix (uri, "file://localhost/")) {
char *tmp;
/* 16 == strlen ("file://localhost") */
tmp = g_strconcat ("file://", uri + 16, NULL);
/* we use gst_uri_get_location() although we already have the
* "location" with uri + 16 because it provides unescaping */
location = gst_uri_get_location (tmp);
g_free (tmp);
} else if (strcmp (uri, "file://") == 0) {
/* Special case for "file://" as this is used by some applications
* to test with gst_element_make_from_uri if there's an element
* that supports the URI protocol. */
gst_file_sink_set_location (sink, NULL, NULL);
return TRUE;
} else {
location = gst_uri_get_location (uri);
}
if (!location) {
g_set_error_literal (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"File URI without location");
return FALSE;
}
if (!g_path_is_absolute (location)) {
g_set_error_literal (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"File URI location must be an absolute path");
g_free (location);
return FALSE;
}
ret = gst_file_sink_set_location (sink, location, error);
g_free (location);
return ret;
}
static void
gst_file_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_file_sink_uri_get_type;
iface->get_protocols = gst_file_sink_uri_get_protocols;
iface->get_uri = gst_file_sink_uri_get_uri;
iface->set_uri = gst_file_sink_uri_set_uri;
}
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