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"
38 #include "../gst-i18n-lib.h"
41 /**********************************************************************
42 * GStreamer Default File Source
45 * This source uses mmap(2) to efficiently load data from a file.
46 * To do this without seriously polluting the applications' memory
47 * space, it must do so in smaller chunks, say 1-4MB at a time.
48 * Buffers are then subdivided from these mmap'd chunks, to directly
49 * make use of the mmap.
51 * To handle refcounting so that the mmap can be freed at the appropriate
52 * time, a buffer will be created for each mmap'd region, and all new
53 * buffers will be sub-buffers of this top-level buffer. As they are
54 * freed, the refcount goes down on the mmap'd buffer and its free()
55 * function is called, which will call munmap(2) on itself.
57 * If a buffer happens to cross the boundaries of an mmap'd region, we
58 * have to decide whether it's more efficient to copy the data into a
59 * new buffer, or mmap() just that buffer. There will have to be a
60 * breakpoint size to determine which will be done. The mmap() size
61 * has a lot to do with this as well, because you end up in double-
62 * jeopardy: the larger the outgoing buffer, the more data to copy when
63 * it overlaps, *and* the more frequently you'll have buffers that *do*
66 * Seeking is another tricky aspect to do efficiently. The initial
67 * implementation of this source won't make use of these features, however.
68 * The issue is that if an application seeks backwards in a file, *and*
69 * that region of the file is covered by an mmap that hasn't been fully
70 * deallocated, we really should re-use it. But keeping track of these
71 * regions is tricky because we have to lock the structure that holds
72 * them. We need to settle on a locking primitive (GMutex seems to be
73 * a really good option...), then we can do that.
77 GST_DEBUG_CATEGORY_STATIC (gst_filesrc_debug);
78 #define GST_CAT_DEFAULT gst_filesrc_debug
80 GstElementDetails gst_filesrc_details = GST_ELEMENT_DETAILS (
83 "Read from arbitrary point in a file",
84 "Erik Walthinsen <omega@cse.ogi.edu>"
87 #define DEFAULT_BLOCKSIZE 4*1024
88 #define DEFAULT_MMAPSIZE 4*1024*1024
90 /* FileSrc signals and args */
105 static const GstEventMask *
106 gst_filesrc_get_event_mask (GstPad *pad)
108 static const GstEventMask masks[] = {
109 { GST_EVENT_SEEK, GST_SEEK_METHOD_CUR |
110 GST_SEEK_METHOD_SET |
111 GST_SEEK_METHOD_END |
112 GST_SEEK_FLAG_FLUSH },
113 { GST_EVENT_FLUSH, 0 },
114 { GST_EVENT_SIZE, 0 },
120 static const GstQueryType *
121 gst_filesrc_get_query_types (GstPad *pad)
123 static const GstQueryType types[] = {
131 static const GstFormat *
132 gst_filesrc_get_formats (GstPad *pad)
134 static const GstFormat formats[] = {
141 static void gst_filesrc_dispose (GObject *object);
143 static void gst_filesrc_set_property (GObject *object, guint prop_id,
144 const GValue *value, GParamSpec *pspec);
145 static void gst_filesrc_get_property (GObject *object, guint prop_id,
146 GValue *value, GParamSpec *pspec);
148 static gboolean gst_filesrc_check_filesize (GstFileSrc *src);
149 static GstData * gst_filesrc_get (GstPad *pad);
150 static gboolean gst_filesrc_srcpad_event (GstPad *pad, GstEvent *event);
151 static gboolean gst_filesrc_srcpad_query (GstPad *pad, GstQueryType type,
152 GstFormat *format, gint64 *value);
154 static GstElementStateReturn gst_filesrc_change_state (GstElement *element);
156 static void gst_filesrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
159 _do_init (GType filesrc_type)
161 static const GInterfaceInfo urihandler_info = {
162 gst_filesrc_uri_handler_init,
166 g_type_add_interface_static (filesrc_type, GST_TYPE_URI_HANDLER, &urihandler_info);
167 GST_DEBUG_CATEGORY_INIT (gst_filesrc_debug, "filesrc", 0, "filesrc element");
170 GST_BOILERPLATE_FULL (GstFileSrc, gst_filesrc, GstElement, GST_TYPE_ELEMENT, _do_init);
173 gst_filesrc_base_init (gpointer g_class)
175 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
177 gst_element_class_set_details (gstelement_class, &gst_filesrc_details);
180 gst_filesrc_class_init (GstFileSrcClass *klass)
182 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
183 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
185 gobject_class = (GObjectClass*)klass;
188 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
189 g_param_spec_int ("fd", "File-descriptor", "File-descriptor for the file being mmap()d",
190 0, G_MAXINT, 0, G_PARAM_READABLE));
191 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOCATION,
192 g_param_spec_string ("location", "File Location", "Location of the file to read",
193 NULL, G_PARAM_READWRITE));
194 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
195 g_param_spec_ulong ("blocksize", "Block size", "Size in bytes to read per buffer",
196 1, G_MAXULONG, DEFAULT_BLOCKSIZE, G_PARAM_READWRITE));
197 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MMAPSIZE,
198 g_param_spec_ulong ("mmapsize", "mmap() Block Size",
199 "Size in bytes of mmap()d regions",
200 0, G_MAXULONG, DEFAULT_MMAPSIZE, G_PARAM_READWRITE));
201 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOUCH,
202 g_param_spec_boolean ("touch", "Touch read data",
203 "Touch data to force disk read",
204 FALSE, G_PARAM_READWRITE));
206 gobject_class->dispose = gst_filesrc_dispose;
207 gobject_class->set_property = gst_filesrc_set_property;
208 gobject_class->get_property = gst_filesrc_get_property;
210 gstelement_class->change_state = gst_filesrc_change_state;
214 gst_filesrc_init (GstFileSrc *src)
216 src->srcpad = gst_pad_new ("src", GST_PAD_SRC);
217 gst_pad_set_get_function (src->srcpad, gst_filesrc_get);
218 gst_pad_set_event_function (src->srcpad, gst_filesrc_srcpad_event);
219 gst_pad_set_event_mask_function (src->srcpad, gst_filesrc_get_event_mask);
220 gst_pad_set_query_function (src->srcpad, gst_filesrc_srcpad_query);
221 gst_pad_set_query_type_function (src->srcpad, gst_filesrc_get_query_types);
222 gst_pad_set_formats_function (src->srcpad, gst_filesrc_get_formats);
223 gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
225 src->pagesize = getpagesize();
227 src->filename = NULL;
232 src->block_size = DEFAULT_BLOCKSIZE;
236 src->mapsize = DEFAULT_MMAPSIZE; /* default is 4MB */
238 src->seek_happened = FALSE;
242 gst_filesrc_dispose (GObject *object)
246 src = GST_FILESRC (object);
248 G_OBJECT_CLASS (parent_class)->dispose (object);
251 g_free (src->filename);
257 gst_filesrc_set_location (GstFileSrc *src, const gchar *location)
259 /* the element must be stopped in order to do this */
260 if (GST_STATE (src) != GST_STATE_READY &&
261 GST_STATE (src) != GST_STATE_NULL)
264 if (src->filename) g_free (src->filename);
265 if (src->uri) g_free (src->uri);
266 /* clear the filename if we get a NULL (is that possible?) */
267 if (location == NULL) {
268 src->filename = NULL;
271 src->filename = g_strdup (location);
272 src->uri = gst_uri_construct ("file", src->filename);
274 g_object_notify (G_OBJECT (src), "location");
275 gst_uri_handler_new_uri (GST_URI_HANDLER (src), src->uri);
281 gst_filesrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
285 /* it's not null if we got it, but it might not be ours */
286 g_return_if_fail (GST_IS_FILESRC (object));
288 src = GST_FILESRC (object);
292 gst_filesrc_set_location (src, g_value_get_string (value));
295 src->block_size = g_value_get_ulong (value);
296 g_object_notify (G_OBJECT (src), "blocksize");
299 if ((src->mapsize % src->pagesize) == 0) {
300 src->mapsize = g_value_get_ulong (value);
301 g_object_notify (G_OBJECT (src), "mmapsize");
303 GST_INFO_OBJECT (src, "invalid mapsize, must be a multiple of pagesize, which is %d",
308 src->touch = g_value_get_boolean (value);
309 g_object_notify (G_OBJECT (src), "touch");
317 gst_filesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
321 /* it's not null if we got it, but it might not be ours */
322 g_return_if_fail (GST_IS_FILESRC (object));
324 src = GST_FILESRC (object);
328 g_value_set_string (value, src->filename);
331 g_value_set_int (value, src->fd);
334 g_value_set_ulong (value, src->block_size);
337 g_value_set_ulong (value, src->mapsize);
340 g_value_set_boolean (value, src->touch);
343 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
349 gst_filesrc_free_parent_mmap (GstBuffer *buf)
351 GST_LOG ("freeing mmap()d buffer at %"G_GUINT64_FORMAT"+%u",
352 GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf));
355 /* madvise to tell the kernel what to do with it */
356 madvise (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), MADV_DONTNEED);
358 /* now unmap the memory */
359 munmap (GST_BUFFER_DATA (buf), GST_BUFFER_MAXSIZE (buf));
360 /* cast to unsigned long, since there's no gportable way to print
362 GST_LOG ("unmapped region %08lx+%08lx at %p",
363 (unsigned long) GST_BUFFER_OFFSET (buf),
364 (unsigned long) GST_BUFFER_MAXSIZE (buf),
365 GST_BUFFER_DATA (buf));
367 GST_BUFFER_DATA (buf) = NULL;
371 gst_filesrc_map_region (GstFileSrc *src, off_t offset, size_t size)
377 g_return_val_if_fail (offset >= 0, NULL);
379 GST_LOG_OBJECT (src, "mapping region %08llx+%08lx from file into memory",offset,(unsigned long)size);
380 mmapregion = mmap (NULL, size, PROT_READ, MAP_SHARED, src->fd, offset);
382 if (mmapregion == NULL) {
383 GST_ELEMENT_ERROR (src, RESOURCE, TOO_LAZY, (NULL), ("mmap call failed."));
386 else if (mmapregion == MAP_FAILED) {
387 GST_WARNING_OBJECT (src, "mmap (0x%08lx, %d, 0x%llx) failed: %s",
388 (unsigned long)size, src->fd, offset, strerror (errno));
391 GST_LOG_OBJECT (src, "mapped region %08lx+%08lx from file into memory at %p",
392 (unsigned long)offset, (unsigned long)size, mmapregion);
394 /* time to allocate a new mapbuf */
395 buf = gst_buffer_new ();
396 /* mmap() the data into this new buffer */
397 GST_BUFFER_DATA (buf) = mmapregion;
399 #ifdef MADV_SEQUENTIAL
400 /* madvise to tell the kernel what to do with it */
401 retval = madvise (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), MADV_SEQUENTIAL);
403 /* fill in the rest of the fields */
404 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_READONLY);
405 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_ORIGINAL);
406 GST_BUFFER_SIZE (buf) = size;
407 GST_BUFFER_MAXSIZE (buf) = size;
408 GST_BUFFER_OFFSET (buf) = offset;
409 GST_BUFFER_OFFSET_END (buf) = offset + size;
410 GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
411 GST_BUFFER_PRIVATE (buf) = src;
412 GST_BUFFER_FREE_DATA_FUNC (buf) = gst_filesrc_free_parent_mmap;
418 gst_filesrc_map_small_region (GstFileSrc *src, off_t offset, size_t size)
424 /* printf("attempting to map a small buffer at %d+%d\n",offset,size); */
426 /* if the offset starts at a non-page boundary, we have to special case */
427 if ((mod = offset % src->pagesize)) {
430 mapbase = offset - mod;
431 mapsize = ((size + mod + src->pagesize - 1) / src->pagesize) * src->pagesize;
432 /* printf("not on page boundaries, resizing map to %d+%d\n",mapbase,mapsize);*/
433 map = gst_filesrc_map_region(src, mapbase, mapsize);
437 ret = gst_buffer_create_sub (map, offset - mapbase, size);
438 GST_BUFFER_OFFSET (ret) = GST_BUFFER_OFFSET (map) + offset - mapbase;
440 gst_buffer_unref (map);
445 return gst_filesrc_map_region(src,offset,size);
449 * gst_filesrc_get_mmap:
450 * @pad: #GstPad to push a buffer from
452 * Push a new buffer from the filesrc at the current offset.
455 gst_filesrc_get_mmap (GstFileSrc *src)
457 GstBuffer *buf = NULL;
458 size_t readsize, mapsize;
459 off_t readend,mapstart,mapend;
462 /* calculate end pointers so we don't have to do so repeatedly later */
463 readsize = src->block_size;
464 readend = src->curoffset + src->block_size; /* note this is the byte *after* the read */
465 mapstart = GST_BUFFER_OFFSET (src->mapbuf);
466 mapsize = GST_BUFFER_SIZE (src->mapbuf);
467 mapend = mapstart + mapsize; /* note this is the byte *after* the map */
469 /* check to see if we're going to overflow the end of the file */
470 if (readend > src->filelen) {
471 if (!gst_filesrc_check_filesize (src) || readend > src->filelen) {
472 readsize = src->filelen - src->curoffset;
473 readend = src->curoffset + readsize;
477 GST_LOG ("attempting to read %08lx, %08lx, %08lx, %08lx",
478 (unsigned long)readsize, (unsigned long)readend,
479 (unsigned long)mapstart, (unsigned long)mapend);
481 /* if the start is past the mapstart */
482 if (src->curoffset >= mapstart) {
483 /* if the end is before the mapend, the buffer is in current mmap region... */
484 /* ('cause by definition if readend is in the buffer, so's readstart) */
485 if (readend <= mapend) {
486 GST_LOG_OBJECT (src, "read buf %llu+%d lives in current mapbuf %lld+%d, creating subbuffer of mapbuf",
487 src->curoffset, (int)readsize, mapstart, mapsize);
488 buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - mapstart,
490 GST_BUFFER_OFFSET (buf) = src->curoffset;
492 /* if the start actually is within the current mmap region, map an overlap buffer */
493 } else if (src->curoffset < mapend) {
494 GST_LOG_OBJECT (src, "read buf %llu+%d starts in mapbuf %d+%d but ends outside, creating new mmap",
495 (unsigned long long) src->curoffset, (gint) readsize, (gint) mapstart, (gint) mapsize);
496 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
501 /* the only other option is that buffer is totally outside, which means we search for it */
503 /* now we can assume that the start is *before* the current mmap region */
504 /* if the readend is past mapstart, we have two options */
505 } else if (readend >= mapstart) {
506 /* either the read buffer overlaps the start of the mmap region */
507 /* or the read buffer fully contains the current mmap region */
508 /* either way, it's really not relevant, we just create a new region anyway*/
509 GST_LOG_OBJECT (src, "read buf %llu+%d starts before mapbuf %d+%d, but overlaps it",
510 (unsigned long long) src->curoffset, (gint) readsize, (gint) mapstart, (gint) mapsize);
511 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
516 /* then deal with the case where the read buffer is totally outside */
518 /* first check to see if there's a map that covers the right region already */
519 GST_LOG_OBJECT (src, "searching for mapbuf to cover %llu+%d",
520 src->curoffset,(int)readsize);
522 /* if the read buffer crosses a mmap region boundary, create a one-off region */
523 if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) {
524 GST_LOG_OBJECT (src, "read buf %llu+%d crosses a %d-byte boundary, creating a one-off",
525 src->curoffset,(int)readsize,(int)src->mapsize);
526 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
530 /* otherwise we will create a new mmap region and set it to the default */
534 off_t nextmap = src->curoffset - (src->curoffset % src->mapsize);
535 GST_LOG_OBJECT (src, "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering",
536 src->curoffset, readsize, nextmap, src->mapsize);
537 /* first, we're done with the old mapbuf */
538 gst_buffer_unref(src->mapbuf);
539 mapsize = src->mapsize;
541 /* double the mapsize as long as the readsize is smaller */
542 while (readsize - (src->curoffset - nextmap) > mapsize) {
543 GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d",
544 readsize, (int)mapsize);
547 /* create a new one */
548 src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize);
549 if (src->mapbuf == NULL)
553 buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap, readsize);
554 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap;
558 /* if we need to touch the buffer (to bring it into memory), do so */
560 volatile guchar *p = GST_BUFFER_DATA (buf), c;
562 for (i=0; i < GST_BUFFER_SIZE (buf); i += src->pagesize)
566 /* we're done, return the buffer */
567 g_assert (src->curoffset == GST_BUFFER_OFFSET (buf));
568 src->curoffset += GST_BUFFER_SIZE(buf);
573 gst_filesrc_get_read (GstFileSrc *src)
575 GstBuffer *buf = NULL;
579 readsize = src->block_size;
580 if (src->curoffset + readsize > src->filelen) {
581 if (!gst_filesrc_check_filesize (src) || src->curoffset + readsize > src->filelen) {
582 readsize = src->filelen - src->curoffset;
586 buf = gst_buffer_new_and_alloc (readsize);
587 g_return_val_if_fail (buf != NULL, NULL);
589 ret = read (src->fd, GST_BUFFER_DATA (buf), readsize);
591 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
594 if (ret < readsize) {
595 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), ("unexpected end of file."));
599 GST_BUFFER_SIZE (buf) = readsize;
600 GST_BUFFER_MAXSIZE (buf) = readsize;
601 GST_BUFFER_OFFSET (buf) = src->curoffset;
602 GST_BUFFER_OFFSET_END (buf) = src->curoffset + readsize;
603 src->curoffset += readsize;
609 gst_filesrc_get (GstPad *pad)
613 g_return_val_if_fail (pad != NULL, NULL);
614 src = GST_FILESRC (gst_pad_get_parent (pad));
615 g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN), NULL);
617 /* check for flush */
618 if (src->need_flush) {
619 src->need_flush = FALSE;
620 GST_DEBUG_OBJECT (src, "sending flush");
621 return GST_DATA (gst_event_new_flush ());
624 if (src->seek_happened) {
627 src->seek_happened = FALSE;
628 GST_DEBUG_OBJECT (src, "sending discont");
629 event = gst_event_new_discontinuous (FALSE, GST_FORMAT_BYTES, src->curoffset, NULL);
630 return GST_DATA (event);
634 g_assert (src->curoffset <= src->filelen);
635 if (src->curoffset == src->filelen) {
636 if (!gst_filesrc_check_filesize (src) || src->curoffset >= src->filelen) {
637 GST_DEBUG_OBJECT (src, "eos %" G_GINT64_FORMAT" %" G_GINT64_FORMAT,
638 src->curoffset, src->filelen);
639 gst_element_set_eos (GST_ELEMENT (src));
640 return GST_DATA (gst_event_new (GST_EVENT_EOS));
644 if (src->using_mmap){
645 return GST_DATA (gst_filesrc_get_mmap (src));
647 return GST_DATA (gst_filesrc_get_read (src));
651 /* TRUE if the filesize of the file was updated */
653 gst_filesrc_check_filesize (GstFileSrc *src)
655 struct stat stat_results;
657 g_return_val_if_fail (GST_FLAG_IS_SET (src ,GST_FILESRC_OPEN), FALSE);
659 fstat(src->fd, &stat_results);
660 GST_DEBUG_OBJECT (src, "checked filesize on %s (was %"G_GUINT64_FORMAT", is %"G_GUINT64_FORMAT")",
661 src->filename, src->filelen, (guint64) stat_results.st_size);
662 if (src->filelen == (guint64) stat_results.st_size)
664 src->filelen = stat_results.st_size;
667 /* open the file and mmap it, necessary to go to READY state */
669 gst_filesrc_open_file (GstFileSrc *src)
671 g_return_val_if_fail (!GST_FLAG_IS_SET (src ,GST_FILESRC_OPEN), FALSE);
673 if (src->filename == NULL || src->filename[0] == '\0')
675 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
676 (_("No file name specified for reading.")), (NULL));
681 GST_INFO_OBJECT (src, "opening file %s",src->filename);
684 src->fd = open (src->filename, O_RDONLY);
688 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), (NULL));
690 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
691 (_("Could not open file \"%s\" for reading."), src->filename),
695 /* check if it is a regular file, otherwise bail out */
696 struct stat stat_results;
698 fstat(src->fd, &stat_results);
700 if (!S_ISREG(stat_results.st_mode)) {
701 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
702 (_("File \"%s\" isn't a regular file."), src->filename),
708 /* find the file length */
709 src->filelen = stat_results.st_size;
711 /* allocate the first mmap'd region */
712 src->mapbuf = gst_filesrc_map_region (src, 0, src->mapsize);
713 if (src->mapbuf == NULL) {
714 src->using_mmap = FALSE;
716 src->using_mmap = TRUE;
721 GST_FLAG_SET (src, GST_FILESRC_OPEN);
726 /* unmap and close the file */
728 gst_filesrc_close_file (GstFileSrc *src)
730 g_return_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN));
735 /* zero out a lot of our state */
741 gst_buffer_unref (src->mapbuf);
745 GST_FLAG_UNSET (src, GST_FILESRC_OPEN);
749 static GstElementStateReturn
750 gst_filesrc_change_state (GstElement *element)
752 GstFileSrc *src = GST_FILESRC(element);
754 switch (GST_STATE_TRANSITION (element)) {
755 case GST_STATE_NULL_TO_READY:
757 case GST_STATE_READY_TO_NULL:
759 case GST_STATE_READY_TO_PAUSED:
760 if (!GST_FLAG_IS_SET (element, GST_FILESRC_OPEN)) {
761 if (!gst_filesrc_open_file (GST_FILESRC (element)))
762 return GST_STATE_FAILURE;
765 case GST_STATE_PAUSED_TO_READY:
766 if (GST_FLAG_IS_SET (element, GST_FILESRC_OPEN))
767 gst_filesrc_close_file (GST_FILESRC (element));
768 src->seek_happened = TRUE;
774 if (GST_ELEMENT_CLASS (parent_class)->change_state)
775 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
777 return GST_STATE_SUCCESS;
781 gst_filesrc_srcpad_query (GstPad *pad, GstQueryType type,
782 GstFormat *format, gint64 *value)
784 GstFileSrc *src = GST_FILESRC (GST_PAD_PARENT (pad));
787 case GST_QUERY_TOTAL:
788 if (*format != GST_FORMAT_BYTES) {
791 gst_filesrc_check_filesize (src);
792 *value = src->filelen;
794 case GST_QUERY_POSITION:
796 case GST_FORMAT_BYTES:
797 *value = src->curoffset;
799 case GST_FORMAT_PERCENT:
800 if (src->filelen == 0)
802 *value = src->curoffset * GST_FORMAT_PERCENT_MAX / src->filelen;
816 gst_filesrc_srcpad_event (GstPad *pad, GstEvent *event)
818 GstFileSrc *src = GST_FILESRC (GST_PAD_PARENT (pad));
820 GST_DEBUG_OBJECT (src, "event %d", GST_EVENT_TYPE (event));
822 switch (GST_EVENT_TYPE (event)) {
827 if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES) {
831 offset = GST_EVENT_SEEK_OFFSET (event);
833 switch (GST_EVENT_SEEK_METHOD (event)) {
834 case GST_SEEK_METHOD_SET:
835 if (offset > src->filelen && (!gst_filesrc_check_filesize (src) || offset > src->filelen)) {
838 src->curoffset = offset;
839 GST_DEBUG_OBJECT (src, "seek set pending to %" G_GINT64_FORMAT, src->curoffset);
841 case GST_SEEK_METHOD_CUR:
842 if (offset + src->curoffset > src->filelen)
843 if (!gst_filesrc_check_filesize (src) || offset + src->curoffset > src->filelen)
845 src->curoffset += offset;
846 GST_DEBUG_OBJECT (src, "seek cur pending to %" G_GINT64_FORMAT, src->curoffset);
848 case GST_SEEK_METHOD_END:
849 if (ABS (offset) > src->filelen) {
850 if (!gst_filesrc_check_filesize (src) || ABS (offset) > src->filelen)
854 src->curoffset = src->filelen - ABS (offset);
855 GST_DEBUG_OBJECT (src, "seek end pending to %" G_GINT64_FORMAT, src->curoffset);
861 src->seek_happened = TRUE;
862 src->need_flush = GST_EVENT_SEEK_FLAGS(event) & GST_SEEK_FLAG_FLUSH;
866 if (GST_EVENT_SIZE_FORMAT (event) != GST_FORMAT_BYTES) {
869 src->block_size = GST_EVENT_SIZE_VALUE (event);
870 g_object_notify (G_OBJECT (src), "blocksize");
872 case GST_EVENT_FLUSH:
873 src->need_flush = TRUE;
879 gst_event_unref (event);
883 gst_event_unref (event);
887 /*** GSTURIHANDLER INTERFACE *************************************************/
890 gst_filesrc_uri_get_type (void)
895 gst_filesrc_uri_get_protocols(void)
897 static gchar *protocols[] = {"file", NULL};
901 gst_filesrc_uri_get_uri (GstURIHandler *handler)
903 GstFileSrc *src = GST_FILESRC (handler);
908 gst_filesrc_uri_set_uri (GstURIHandler *handler, const gchar *uri)
910 gchar *protocol, *location;
912 GstFileSrc *src = GST_FILESRC (handler);
914 protocol = gst_uri_get_protocol (uri);
915 if (strcmp (protocol, "file") != 0) {
920 location = gst_uri_get_location (uri);
921 ret = gst_filesrc_set_location (src, location);
928 gst_filesrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
930 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
932 iface->get_type = gst_filesrc_uri_get_type;
933 iface->get_protocols = gst_filesrc_uri_get_protocols;
934 iface->get_uri = gst_filesrc_uri_get_uri;
935 iface->set_uri = gst_filesrc_uri_set_uri;