2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
28 #include "gstfilesrc.h"
40 #include "../gst-i18n-lib.h"
43 /**********************************************************************
44 * GStreamer Default File Source
47 * This source uses mmap(2) to efficiently load data from a file.
48 * To do this without seriously polluting the applications' memory
49 * space, it must do so in smaller chunks, say 1-4MB at a time.
50 * Buffers are then subdivided from these mmap'd chunks, to directly
51 * make use of the mmap.
53 * To handle refcounting so that the mmap can be freed at the appropriate
54 * time, a buffer will be created for each mmap'd region, and all new
55 * buffers will be sub-buffers of this top-level buffer. As they are
56 * freed, the refcount goes down on the mmap'd buffer and its free()
57 * function is called, which will call munmap(2) on itself.
59 * If a buffer happens to cross the boundaries of an mmap'd region, we
60 * have to decide whether it's more efficient to copy the data into a
61 * new buffer, or mmap() just that buffer. There will have to be a
62 * breakpoint size to determine which will be done. The mmap() size
63 * has a lot to do with this as well, because you end up in double-
64 * jeopardy: the larger the outgoing buffer, the more data to copy when
65 * it overlaps, *and* the more frequently you'll have buffers that *do*
68 * Seeking is another tricky aspect to do efficiently. The initial
69 * implementation of this source won't make use of these features, however.
70 * The issue is that if an application seeks backwards in a file, *and*
71 * that region of the file is covered by an mmap that hasn't been fully
72 * deallocated, we really should re-use it. But keeping track of these
73 * regions is tricky because we have to lock the structure that holds
74 * them. We need to settle on a locking primitive (GMutex seems to be
75 * a really good option...), then we can do that.
79 GST_DEBUG_CATEGORY_STATIC (gst_filesrc_debug);
80 #define GST_CAT_DEFAULT gst_filesrc_debug
82 GstElementDetails gst_filesrc_details = GST_ELEMENT_DETAILS ("File Source",
84 "Read from arbitrary point in a file",
85 "Erik Walthinsen <omega@cse.ogi.edu>");
87 #define DEFAULT_BLOCKSIZE 4*1024
88 #define DEFAULT_MMAPSIZE 4*1024*1024
90 /* FileSrc signals and args */
107 static const GstEventMask *
108 gst_filesrc_get_event_mask (GstPad * pad)
110 static const GstEventMask masks[] = {
111 {GST_EVENT_SEEK, GST_SEEK_METHOD_CUR |
112 GST_SEEK_METHOD_SET | GST_SEEK_METHOD_END | GST_SEEK_FLAG_FLUSH},
113 {GST_EVENT_FLUSH, 0},
121 static const GstQueryType *
122 gst_filesrc_get_query_types (GstPad * pad)
124 static const GstQueryType types[] = {
133 static const GstFormat *
134 gst_filesrc_get_formats (GstPad * pad)
136 static const GstFormat formats[] = {
144 static void gst_filesrc_dispose (GObject * object);
146 static void gst_filesrc_set_property (GObject * object, guint prop_id,
147 const GValue * value, GParamSpec * pspec);
148 static void gst_filesrc_get_property (GObject * object, guint prop_id,
149 GValue * value, GParamSpec * pspec);
151 static gboolean gst_filesrc_check_filesize (GstFileSrc * src);
152 static GstData *gst_filesrc_get (GstPad * pad);
153 static gboolean gst_filesrc_srcpad_event (GstPad * pad, GstEvent * event);
154 static gboolean gst_filesrc_srcpad_query (GstPad * pad, GstQueryType type,
155 GstFormat * format, gint64 * value);
157 static GstElementStateReturn gst_filesrc_change_state (GstElement * element);
159 static void gst_filesrc_uri_handler_init (gpointer g_iface,
160 gpointer iface_data);
163 _do_init (GType filesrc_type)
165 static const GInterfaceInfo urihandler_info = {
166 gst_filesrc_uri_handler_init,
171 g_type_add_interface_static (filesrc_type, GST_TYPE_URI_HANDLER,
173 GST_DEBUG_CATEGORY_INIT (gst_filesrc_debug, "filesrc", 0, "filesrc element");
176 GST_BOILERPLATE_FULL (GstFileSrc, gst_filesrc, GstElement, GST_TYPE_ELEMENT,
180 gst_filesrc_base_init (gpointer g_class)
182 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
184 gst_element_class_set_details (gstelement_class, &gst_filesrc_details);
187 gst_filesrc_class_init (GstFileSrcClass * klass)
189 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
190 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
192 gobject_class = (GObjectClass *) klass;
195 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
196 g_param_spec_int ("fd", "File-descriptor",
197 "File-descriptor for the file being mmap()d", 0, G_MAXINT, 0,
199 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOCATION,
200 g_param_spec_string ("location", "File Location",
201 "Location of the file to read", NULL, G_PARAM_READWRITE));
202 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
203 g_param_spec_ulong ("blocksize", "Block size",
204 "Size in bytes to read per buffer", 1, G_MAXULONG, DEFAULT_BLOCKSIZE,
206 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MMAPSIZE,
207 g_param_spec_ulong ("mmapsize", "mmap() Block Size",
208 "Size in bytes of mmap()d regions", 0, G_MAXULONG, DEFAULT_MMAPSIZE,
210 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOUCH,
211 g_param_spec_boolean ("touch", "Touch read data",
212 "Touch data to force disk read", FALSE, G_PARAM_READWRITE));
214 gobject_class->dispose = gst_filesrc_dispose;
215 gobject_class->set_property = gst_filesrc_set_property;
216 gobject_class->get_property = gst_filesrc_get_property;
218 gstelement_class->change_state = gst_filesrc_change_state;
222 gst_filesrc_init (GstFileSrc * src)
224 src->srcpad = gst_pad_new ("src", GST_PAD_SRC);
225 gst_pad_set_get_function (src->srcpad, gst_filesrc_get);
226 gst_pad_set_event_function (src->srcpad, gst_filesrc_srcpad_event);
227 gst_pad_set_event_mask_function (src->srcpad, gst_filesrc_get_event_mask);
228 gst_pad_set_query_function (src->srcpad, gst_filesrc_srcpad_query);
229 gst_pad_set_query_type_function (src->srcpad, gst_filesrc_get_query_types);
230 gst_pad_set_formats_function (src->srcpad, gst_filesrc_get_formats);
231 gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
233 src->pagesize = getpagesize ();
235 src->filename = NULL;
241 src->block_size = DEFAULT_BLOCKSIZE;
245 src->mapsize = DEFAULT_MMAPSIZE; /* default is 4MB */
247 src->seek_happened = FALSE;
251 gst_filesrc_dispose (GObject * object)
255 src = GST_FILESRC (object);
257 g_free (src->filename);
260 /* dispose may be called multiple times */
261 src->filename = NULL;
264 G_OBJECT_CLASS (parent_class)->dispose (object);
268 gst_filesrc_set_location (GstFileSrc * src, const gchar * location)
270 /* the element must be stopped in order to do this */
271 if (GST_STATE (src) != GST_STATE_READY && GST_STATE (src) != GST_STATE_NULL)
274 g_free (src->filename);
277 /* clear the filename if we get a NULL (is that possible?) */
278 if (location == NULL) {
279 src->filename = NULL;
282 src->filename = g_strdup (location);
283 src->uri = gst_uri_construct ("file", src->filename);
285 g_object_notify (G_OBJECT (src), "location");
286 gst_uri_handler_new_uri (GST_URI_HANDLER (src), src->uri);
292 gst_filesrc_set_property (GObject * object, guint prop_id, const GValue * value,
297 /* it's not null if we got it, but it might not be ours */
298 g_return_if_fail (GST_IS_FILESRC (object));
300 src = GST_FILESRC (object);
304 gst_filesrc_set_location (src, g_value_get_string (value));
307 src->block_size = g_value_get_ulong (value);
308 g_object_notify (G_OBJECT (src), "blocksize");
311 if ((src->mapsize % src->pagesize) == 0) {
312 src->mapsize = g_value_get_ulong (value);
313 g_object_notify (G_OBJECT (src), "mmapsize");
315 GST_INFO_OBJECT (src,
316 "invalid mapsize, must be a multiple of pagesize, which is %d",
321 src->touch = g_value_get_boolean (value);
322 g_object_notify (G_OBJECT (src), "touch");
330 gst_filesrc_get_property (GObject * object, guint prop_id, GValue * value,
335 /* it's not null if we got it, but it might not be ours */
336 g_return_if_fail (GST_IS_FILESRC (object));
338 src = GST_FILESRC (object);
342 g_value_set_string (value, src->filename);
345 g_value_set_int (value, src->fd);
348 g_value_set_ulong (value, src->block_size);
351 g_value_set_ulong (value, src->mapsize);
354 g_value_set_boolean (value, src->touch);
357 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
364 gst_filesrc_free_parent_mmap (GstBuffer * buf)
366 GST_LOG ("freeing mmap()d buffer at %" G_GUINT64_FORMAT "+%u",
367 GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf));
370 /* madvise to tell the kernel what to do with it */
371 madvise (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), MADV_DONTNEED);
373 /* now unmap the memory */
374 munmap (GST_BUFFER_DATA (buf), GST_BUFFER_MAXSIZE (buf));
375 /* cast to unsigned long, since there's no gportable way to print
377 GST_LOG ("unmapped region %08lx+%08lx at %p",
378 (unsigned long) GST_BUFFER_OFFSET (buf),
379 (unsigned long) GST_BUFFER_MAXSIZE (buf), GST_BUFFER_DATA (buf));
381 GST_BUFFER_DATA (buf) = NULL;
387 gst_filesrc_map_region (GstFileSrc * src, off_t offset, size_t size)
393 g_return_val_if_fail (offset >= 0, NULL);
395 GST_LOG_OBJECT (src, "mapping region %08llx+%08lx from file into memory",
396 offset, (unsigned long) size);
397 mmapregion = mmap (NULL, size, PROT_READ, MAP_SHARED, src->fd, offset);
399 if (mmapregion == NULL) {
400 GST_ELEMENT_ERROR (src, RESOURCE, TOO_LAZY, (NULL), ("mmap call failed."));
402 } else if (mmapregion == MAP_FAILED) {
403 GST_WARNING_OBJECT (src, "mmap (0x%08lx, %d, 0x%llx) failed: %s",
404 (unsigned long) size, src->fd, offset, strerror (errno));
407 GST_LOG_OBJECT (src, "mapped region %08lx+%08lx from file into memory at %p",
408 (unsigned long) offset, (unsigned long) size, mmapregion);
410 /* time to allocate a new mapbuf */
411 buf = gst_buffer_new ();
412 /* mmap() the data into this new buffer */
413 GST_BUFFER_DATA (buf) = mmapregion;
415 #ifdef MADV_SEQUENTIAL
416 /* madvise to tell the kernel what to do with it */
418 madvise (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), MADV_SEQUENTIAL);
420 /* fill in the rest of the fields */
421 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_READONLY);
422 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_ORIGINAL);
423 GST_BUFFER_SIZE (buf) = size;
424 GST_BUFFER_MAXSIZE (buf) = size;
425 GST_BUFFER_OFFSET (buf) = offset;
426 GST_BUFFER_OFFSET_END (buf) = offset + size;
427 GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
428 GST_BUFFER_PRIVATE (buf) = src;
429 GST_BUFFER_FREE_DATA_FUNC (buf) = gst_filesrc_free_parent_mmap;
437 gst_filesrc_map_small_region (GstFileSrc * src, off_t offset, size_t size)
443 /* printf("attempting to map a small buffer at %d+%d\n",offset,size); */
445 /* if the offset starts at a non-page boundary, we have to special case */
446 if ((mod = offset % src->pagesize)) {
449 mapbase = offset - mod;
451 ((size + mod + src->pagesize - 1) / src->pagesize) * src->pagesize;
452 /* printf("not on page boundaries, resizing map to %d+%d\n",mapbase,mapsize);*/
453 map = gst_filesrc_map_region (src, mapbase, mapsize);
457 ret = gst_buffer_create_sub (map, offset - mapbase, size);
458 GST_BUFFER_OFFSET (ret) = GST_BUFFER_OFFSET (map) + offset - mapbase;
460 gst_buffer_unref (map);
465 return gst_filesrc_map_region (src, offset, size);
471 * gst_filesrc_get_mmap:
472 * @pad: #GstPad to push a buffer from
474 * Push a new buffer from the filesrc at the current offset.
477 gst_filesrc_get_mmap (GstFileSrc * src)
479 GstBuffer *buf = NULL;
480 size_t readsize, mapsize;
481 off_t readend, mapstart, mapend;
484 /* calculate end pointers so we don't have to do so repeatedly later */
485 readsize = src->block_size;
486 readend = src->curoffset + src->block_size; /* note this is the byte *after* the read */
487 mapstart = GST_BUFFER_OFFSET (src->mapbuf);
488 mapsize = GST_BUFFER_SIZE (src->mapbuf);
489 mapend = mapstart + mapsize; /* note this is the byte *after* the map */
491 /* check to see if we're going to overflow the end of the file */
492 if (readend > src->filelen) {
493 if (!gst_filesrc_check_filesize (src) || readend > src->filelen) {
494 readsize = src->filelen - src->curoffset;
495 readend = src->curoffset + readsize;
499 GST_LOG ("attempting to read %08lx, %08lx, %08lx, %08lx",
500 (unsigned long) readsize, (unsigned long) readend,
501 (unsigned long) mapstart, (unsigned long) mapend);
503 /* if the start is past the mapstart */
504 if (src->curoffset >= mapstart) {
505 /* if the end is before the mapend, the buffer is in current mmap region... */
506 /* ('cause by definition if readend is in the buffer, so's readstart) */
507 if (readend <= mapend) {
509 "read buf %llu+%d lives in current mapbuf %lld+%d, creating subbuffer of mapbuf",
510 src->curoffset, (int) readsize, mapstart, mapsize);
512 gst_buffer_create_sub (src->mapbuf, src->curoffset - mapstart,
514 GST_BUFFER_OFFSET (buf) = src->curoffset;
516 /* if the start actually is within the current mmap region, map an overlap buffer */
517 } else if (src->curoffset < mapend) {
519 "read buf %llu+%d starts in mapbuf %d+%d but ends outside, creating new mmap",
520 (unsigned long long) src->curoffset, (gint) readsize, (gint) mapstart,
522 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
527 /* the only other option is that buffer is totally outside, which means we search for it */
529 /* now we can assume that the start is *before* the current mmap region */
530 /* if the readend is past mapstart, we have two options */
531 } else if (readend >= mapstart) {
532 /* either the read buffer overlaps the start of the mmap region */
533 /* or the read buffer fully contains the current mmap region */
534 /* either way, it's really not relevant, we just create a new region anyway */
536 "read buf %llu+%d starts before mapbuf %d+%d, but overlaps it",
537 (unsigned long long) src->curoffset, (gint) readsize, (gint) mapstart,
539 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
544 /* then deal with the case where the read buffer is totally outside */
546 /* first check to see if there's a map that covers the right region already */
547 GST_LOG_OBJECT (src, "searching for mapbuf to cover %llu+%d",
548 src->curoffset, (int) readsize);
550 /* if the read buffer crosses a mmap region boundary, create a one-off region */
551 if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) {
553 "read buf %llu+%d crosses a %d-byte boundary, creating a one-off",
554 src->curoffset, (int) readsize, (int) src->mapsize);
555 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
559 /* otherwise we will create a new mmap region and set it to the default */
563 off_t nextmap = src->curoffset - (src->curoffset % src->mapsize);
566 "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering",
567 src->curoffset, readsize, nextmap, src->mapsize);
568 /* first, we're done with the old mapbuf */
569 gst_buffer_unref (src->mapbuf);
570 mapsize = src->mapsize;
572 /* double the mapsize as long as the readsize is smaller */
573 while (readsize - (src->curoffset - nextmap) > mapsize) {
574 GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d",
575 readsize, (int) mapsize);
578 /* create a new one */
579 src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize);
580 if (src->mapbuf == NULL)
585 gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap,
587 GST_BUFFER_OFFSET (buf) =
588 GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap;
592 /* if we need to touch the buffer (to bring it into memory), do so */
594 volatile guchar *p = GST_BUFFER_DATA (buf), c;
596 for (i = 0; i < GST_BUFFER_SIZE (buf); i += src->pagesize)
600 /* we're done, return the buffer */
601 g_assert (src->curoffset == GST_BUFFER_OFFSET (buf));
602 src->curoffset += GST_BUFFER_SIZE (buf);
608 gst_filesrc_get_read (GstFileSrc * src)
610 GstBuffer *buf = NULL;
614 readsize = src->block_size;
615 if (src->curoffset + readsize > src->filelen) {
616 if (!gst_filesrc_check_filesize (src)
617 || src->curoffset + readsize > src->filelen) {
618 readsize = src->filelen - src->curoffset;
622 buf = gst_buffer_new_and_alloc (readsize);
623 g_return_val_if_fail (buf != NULL, NULL);
625 ret = read (src->fd, GST_BUFFER_DATA (buf), readsize);
627 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
630 if (ret < readsize) {
631 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
632 ("unexpected end of file."));
636 GST_BUFFER_SIZE (buf) = readsize;
637 GST_BUFFER_MAXSIZE (buf) = readsize;
638 GST_BUFFER_OFFSET (buf) = src->curoffset;
639 GST_BUFFER_OFFSET_END (buf) = src->curoffset + readsize;
640 src->curoffset += readsize;
646 gst_filesrc_get (GstPad * pad)
650 g_return_val_if_fail (pad != NULL, NULL);
651 src = GST_FILESRC (gst_pad_get_parent (pad));
652 g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN), NULL);
654 /* check for flush */
655 if (src->need_flush) {
656 src->need_flush = FALSE;
657 GST_DEBUG_OBJECT (src, "sending flush");
658 return GST_DATA (gst_event_new_flush ());
661 if (src->seek_happened) {
664 src->seek_happened = FALSE;
665 GST_DEBUG_OBJECT (src, "sending discont");
667 gst_event_new_discontinuous (FALSE, GST_FORMAT_BYTES, src->curoffset,
669 return GST_DATA (event);
673 g_assert (src->curoffset <= src->filelen);
674 if (src->curoffset == src->filelen) {
675 if (!gst_filesrc_check_filesize (src) || src->curoffset >= src->filelen) {
676 GST_DEBUG_OBJECT (src, "eos %" G_GINT64_FORMAT " %" G_GINT64_FORMAT,
677 src->curoffset, src->filelen);
678 gst_element_set_eos (GST_ELEMENT (src));
679 return GST_DATA (gst_event_new (GST_EVENT_EOS));
683 if (src->using_mmap) {
684 return GST_DATA (gst_filesrc_get_mmap (src));
686 return GST_DATA (gst_filesrc_get_read (src));
689 return GST_DATA (gst_filesrc_get_read (src));
693 /* TRUE if the filesize of the file was updated */
695 gst_filesrc_check_filesize (GstFileSrc * src)
697 struct stat stat_results;
699 g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN), FALSE);
701 fstat (src->fd, &stat_results);
702 GST_DEBUG_OBJECT (src,
703 "checked filesize on %s (was %" G_GUINT64_FORMAT ", is %" G_GUINT64_FORMAT
704 ")", src->filename, src->filelen, (guint64) stat_results.st_size);
705 if (src->filelen == (guint64) stat_results.st_size)
707 src->filelen = stat_results.st_size;
711 /* open the file and mmap it, necessary to go to READY state */
713 gst_filesrc_open_file (GstFileSrc * src)
715 g_return_val_if_fail (!GST_FLAG_IS_SET (src, GST_FILESRC_OPEN), FALSE);
717 if (src->filename == NULL || src->filename[0] == '\0') {
718 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
719 (_("No file name specified for reading.")), (NULL));
724 GST_INFO_OBJECT (src, "opening file %s", src->filename);
727 src->fd = open (src->filename, O_RDONLY);
730 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), (NULL));
732 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
733 (_("Could not open file \"%s\" for reading."), src->filename),
737 /* check if it is a regular file, otherwise bail out */
738 struct stat stat_results;
740 fstat (src->fd, &stat_results);
742 if (!S_ISREG (stat_results.st_mode)) {
743 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
744 (_("File \"%s\" isn't a regular file."), src->filename), (NULL));
749 /* find the file length */
750 src->filelen = stat_results.st_size;
752 src->using_mmap = FALSE;
754 /* allocate the first mmap'd region */
755 src->mapbuf = gst_filesrc_map_region (src, 0, src->mapsize);
756 if (src->mapbuf != NULL) {
757 src->using_mmap = TRUE;
764 GST_FLAG_SET (src, GST_FILESRC_OPEN);
769 /* unmap and close the file */
771 gst_filesrc_close_file (GstFileSrc * src)
773 g_return_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN));
778 /* zero out a lot of our state */
784 gst_buffer_unref (src->mapbuf);
788 GST_FLAG_UNSET (src, GST_FILESRC_OPEN);
792 static GstElementStateReturn
793 gst_filesrc_change_state (GstElement * element)
795 GstFileSrc *src = GST_FILESRC (element);
797 switch (GST_STATE_TRANSITION (element)) {
798 case GST_STATE_NULL_TO_READY:
800 case GST_STATE_READY_TO_NULL:
802 case GST_STATE_READY_TO_PAUSED:
803 if (!GST_FLAG_IS_SET (element, GST_FILESRC_OPEN)) {
804 if (!gst_filesrc_open_file (GST_FILESRC (element)))
805 return GST_STATE_FAILURE;
808 case GST_STATE_PAUSED_TO_READY:
809 if (GST_FLAG_IS_SET (element, GST_FILESRC_OPEN))
810 gst_filesrc_close_file (GST_FILESRC (element));
811 src->seek_happened = TRUE;
817 if (GST_ELEMENT_CLASS (parent_class)->change_state)
818 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
820 return GST_STATE_SUCCESS;
824 gst_filesrc_srcpad_query (GstPad * pad, GstQueryType type,
825 GstFormat * format, gint64 * value)
827 GstFileSrc *src = GST_FILESRC (GST_PAD_PARENT (pad));
830 case GST_QUERY_TOTAL:
831 if (*format != GST_FORMAT_BYTES) {
834 gst_filesrc_check_filesize (src);
835 *value = src->filelen;
837 case GST_QUERY_POSITION:
839 case GST_FORMAT_BYTES:
840 *value = src->curoffset;
842 case GST_FORMAT_PERCENT:
843 if (src->filelen == 0)
845 *value = src->curoffset * GST_FORMAT_PERCENT_MAX / src->filelen;
859 gst_filesrc_srcpad_event (GstPad * pad, GstEvent * event)
861 GstFileSrc *src = GST_FILESRC (GST_PAD_PARENT (pad));
863 GST_DEBUG_OBJECT (src, "event %d", GST_EVENT_TYPE (event));
865 switch (GST_EVENT_TYPE (event)) {
870 if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES) {
874 offset = GST_EVENT_SEEK_OFFSET (event);
876 switch (GST_EVENT_SEEK_METHOD (event)) {
877 case GST_SEEK_METHOD_SET:
879 (offset > src->filelen && (!gst_filesrc_check_filesize (src)
880 || offset > src->filelen))) {
883 src->curoffset = offset;
884 GST_DEBUG_OBJECT (src, "seek set pending to %" G_GINT64_FORMAT,
887 case GST_SEEK_METHOD_CUR:
888 if (offset + src->curoffset > src->filelen)
889 if (!gst_filesrc_check_filesize (src)
890 || offset + src->curoffset > src->filelen)
892 src->curoffset += offset;
893 GST_DEBUG_OBJECT (src, "seek cur pending to %" G_GINT64_FORMAT,
896 case GST_SEEK_METHOD_END:
897 if (ABS (offset) > src->filelen) {
898 if (!gst_filesrc_check_filesize (src)
899 || ABS (offset) > src->filelen)
903 src->curoffset = src->filelen - ABS (offset);
904 GST_DEBUG_OBJECT (src, "seek end pending to %" G_GINT64_FORMAT,
911 src->seek_happened = TRUE;
912 src->need_flush = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH;
916 if (GST_EVENT_SIZE_FORMAT (event) != GST_FORMAT_BYTES) {
919 src->block_size = GST_EVENT_SIZE_VALUE (event);
920 g_object_notify (G_OBJECT (src), "blocksize");
922 case GST_EVENT_FLUSH:
923 src->need_flush = TRUE;
929 gst_event_unref (event);
933 gst_event_unref (event);
937 /*** GSTURIHANDLER INTERFACE *************************************************/
940 gst_filesrc_uri_get_type (void)
945 gst_filesrc_uri_get_protocols (void)
947 static gchar *protocols[] = { "file", NULL };
952 gst_filesrc_uri_get_uri (GstURIHandler * handler)
954 GstFileSrc *src = GST_FILESRC (handler);
960 gst_filesrc_uri_set_uri (GstURIHandler * handler, const gchar * uri)
962 gchar *protocol, *location;
964 GstFileSrc *src = GST_FILESRC (handler);
966 protocol = gst_uri_get_protocol (uri);
967 if (strcmp (protocol, "file") != 0) {
972 location = gst_uri_get_location (uri);
973 ret = gst_filesrc_set_location (src, location);
980 gst_filesrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
982 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
984 iface->get_type = gst_filesrc_uri_get_type;
985 iface->get_protocols = gst_filesrc_uri_get_protocols;
986 iface->get_uri = gst_filesrc_uri_get_uri;
987 iface->set_uri = gst_filesrc_uri_set_uri;