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 GST_PAD_EVENT_MASK_FUNCTION (gst_filesrc_get_event_mask,
106 { GST_EVENT_SEEK, GST_SEEK_METHOD_CUR |
107 GST_SEEK_METHOD_SET |
108 GST_SEEK_METHOD_END |
109 GST_SEEK_FLAG_FLUSH },
110 { GST_EVENT_FLUSH, 0 },
111 { GST_EVENT_SIZE, 0 }
114 GST_PAD_QUERY_TYPE_FUNCTION (gst_filesrc_get_query_types,
119 GST_PAD_FORMATS_FUNCTION (gst_filesrc_get_formats,
123 static void gst_filesrc_dispose (GObject *object);
125 static void gst_filesrc_set_property (GObject *object, guint prop_id,
126 const GValue *value, GParamSpec *pspec);
127 static void gst_filesrc_get_property (GObject *object, guint prop_id,
128 GValue *value, GParamSpec *pspec);
130 static gboolean gst_filesrc_check_filesize (GstFileSrc *src);
131 static GstData * gst_filesrc_get (GstPad *pad);
132 static gboolean gst_filesrc_srcpad_event (GstPad *pad, GstEvent *event);
133 static gboolean gst_filesrc_srcpad_query (GstPad *pad, GstQueryType type,
134 GstFormat *format, gint64 *value);
136 static GstElementStateReturn gst_filesrc_change_state (GstElement *element);
138 static void gst_filesrc_uri_handler_init (gpointer g_iface, gpointer iface_data);
141 _do_init (GType filesrc_type)
143 static const GInterfaceInfo urihandler_info = {
144 gst_filesrc_uri_handler_init,
148 g_type_add_interface_static (filesrc_type, GST_TYPE_URI_HANDLER, &urihandler_info);
149 GST_DEBUG_CATEGORY_INIT (gst_filesrc_debug, "filesrc", 0, "filesrc element");
152 GST_BOILERPLATE_FULL (GstFileSrc, gst_filesrc, GstElement, GST_TYPE_ELEMENT, _do_init);
155 gst_filesrc_base_init (gpointer g_class)
157 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
159 gst_element_class_set_details (gstelement_class, &gst_filesrc_details);
162 gst_filesrc_class_init (GstFileSrcClass *klass)
164 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
165 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
167 gobject_class = (GObjectClass*)klass;
170 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
171 g_param_spec_int ("fd", "File-descriptor", "File-descriptor for the file being mmap()d",
172 0, G_MAXINT, 0, G_PARAM_READABLE));
173 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOCATION,
174 g_param_spec_string ("location", "File Location", "Location of the file to read",
175 NULL, G_PARAM_READWRITE));
176 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
177 g_param_spec_ulong ("blocksize", "Block size", "Size in bytes to read per buffer",
178 1, G_MAXULONG, DEFAULT_BLOCKSIZE, G_PARAM_READWRITE));
179 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MMAPSIZE,
180 g_param_spec_ulong ("mmapsize", "mmap() Block Size",
181 "Size in bytes of mmap()d regions",
182 0, G_MAXULONG, DEFAULT_MMAPSIZE, G_PARAM_READWRITE));
183 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOUCH,
184 g_param_spec_boolean ("touch", "Touch read data",
185 "Touch data to force disk read",
186 FALSE, G_PARAM_READWRITE));
188 gobject_class->dispose = gst_filesrc_dispose;
189 gobject_class->set_property = gst_filesrc_set_property;
190 gobject_class->get_property = gst_filesrc_get_property;
192 gstelement_class->change_state = gst_filesrc_change_state;
196 gst_filesrc_init (GstFileSrc *src)
198 src->srcpad = gst_pad_new ("src", GST_PAD_SRC);
199 gst_pad_set_get_function (src->srcpad, gst_filesrc_get);
200 gst_pad_set_event_function (src->srcpad, gst_filesrc_srcpad_event);
201 gst_pad_set_event_mask_function (src->srcpad, gst_filesrc_get_event_mask);
202 gst_pad_set_query_function (src->srcpad, gst_filesrc_srcpad_query);
203 gst_pad_set_query_type_function (src->srcpad, gst_filesrc_get_query_types);
204 gst_pad_set_formats_function (src->srcpad, gst_filesrc_get_formats);
205 gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
207 src->pagesize = getpagesize();
209 src->filename = NULL;
214 src->block_size = DEFAULT_BLOCKSIZE;
218 src->mapsize = DEFAULT_MMAPSIZE; /* default is 4MB */
220 src->seek_happened = FALSE;
224 gst_filesrc_dispose (GObject *object)
228 src = GST_FILESRC (object);
230 G_OBJECT_CLASS (parent_class)->dispose (object);
233 g_free (src->filename);
239 gst_filesrc_set_location (GstFileSrc *src, const gchar *location)
241 /* the element must be stopped in order to do this */
242 if (GST_STATE (src) != GST_STATE_READY &&
243 GST_STATE (src) != GST_STATE_NULL)
246 if (src->filename) g_free (src->filename);
247 if (src->uri) g_free (src->uri);
248 /* clear the filename if we get a NULL (is that possible?) */
249 if (location == NULL) {
250 src->filename = NULL;
253 src->filename = g_strdup (location);
254 src->uri = gst_uri_construct ("file", src->filename);
256 g_object_notify (G_OBJECT (src), "location");
257 gst_uri_handler_new_uri (GST_URI_HANDLER (src), src->uri);
263 gst_filesrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
267 /* it's not null if we got it, but it might not be ours */
268 g_return_if_fail (GST_IS_FILESRC (object));
270 src = GST_FILESRC (object);
274 gst_filesrc_set_location (src, g_value_get_string (value));
277 src->block_size = g_value_get_ulong (value);
278 g_object_notify (G_OBJECT (src), "blocksize");
281 if ((src->mapsize % src->pagesize) == 0) {
282 src->mapsize = g_value_get_ulong (value);
283 g_object_notify (G_OBJECT (src), "mmapsize");
285 GST_INFO_OBJECT (src, "invalid mapsize, must be a multiple of pagesize, which is %d",
290 src->touch = g_value_get_boolean (value);
291 g_object_notify (G_OBJECT (src), "touch");
299 gst_filesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
303 /* it's not null if we got it, but it might not be ours */
304 g_return_if_fail (GST_IS_FILESRC (object));
306 src = GST_FILESRC (object);
310 g_value_set_string (value, src->filename);
313 g_value_set_int (value, src->fd);
316 g_value_set_ulong (value, src->block_size);
319 g_value_set_ulong (value, src->mapsize);
322 g_value_set_boolean (value, src->touch);
325 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
331 gst_filesrc_free_parent_mmap (GstBuffer *buf)
333 GST_LOG ("freeing mmap()d buffer at %"G_GUINT64_FORMAT"+%u",
334 GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf));
337 /* madvise to tell the kernel what to do with it */
338 madvise (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), MADV_DONTNEED);
340 /* now unmap the memory */
341 munmap (GST_BUFFER_DATA (buf), GST_BUFFER_MAXSIZE (buf));
342 /* cast to unsigned long, since there's no gportable way to print
344 GST_LOG ("unmapped region %08lx+%08lx at %p",
345 (unsigned long) GST_BUFFER_OFFSET (buf),
346 (unsigned long) GST_BUFFER_MAXSIZE (buf),
347 GST_BUFFER_DATA (buf));
349 GST_BUFFER_DATA (buf) = NULL;
353 gst_filesrc_map_region (GstFileSrc *src, off_t offset, size_t size)
359 g_return_val_if_fail (offset >= 0, NULL);
361 GST_LOG_OBJECT (src, "mapping region %08llx+%08lx from file into memory",offset,(unsigned long)size);
362 mmapregion = mmap (NULL, size, PROT_READ, MAP_SHARED, src->fd, offset);
364 if (mmapregion == NULL) {
365 GST_ELEMENT_ERROR (src, RESOURCE, TOO_LAZY, (NULL), ("mmap call failed."));
368 else if (mmapregion == MAP_FAILED) {
369 GST_WARNING_OBJECT (src, "mmap (0x%08lx, %d, 0x%llx) failed: %s",
370 (unsigned long)size, src->fd, offset, strerror (errno));
373 GST_LOG_OBJECT (src, "mapped region %08lx+%08lx from file into memory at %p",
374 (unsigned long)offset, (unsigned long)size, mmapregion);
376 /* time to allocate a new mapbuf */
377 buf = gst_buffer_new ();
378 /* mmap() the data into this new buffer */
379 GST_BUFFER_DATA (buf) = mmapregion;
381 #ifdef MADV_SEQUENTIAL
382 /* madvise to tell the kernel what to do with it */
383 retval = madvise (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), MADV_SEQUENTIAL);
385 /* fill in the rest of the fields */
386 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_READONLY);
387 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_ORIGINAL);
388 GST_BUFFER_SIZE (buf) = size;
389 GST_BUFFER_MAXSIZE (buf) = size;
390 GST_BUFFER_OFFSET (buf) = offset;
391 GST_BUFFER_OFFSET_END (buf) = offset + size;
392 GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
393 GST_BUFFER_PRIVATE (buf) = src;
394 GST_BUFFER_FREE_DATA_FUNC (buf) = gst_filesrc_free_parent_mmap;
400 gst_filesrc_map_small_region (GstFileSrc *src, off_t offset, size_t size)
406 /* printf("attempting to map a small buffer at %d+%d\n",offset,size); */
408 /* if the offset starts at a non-page boundary, we have to special case */
409 if ((mod = offset % src->pagesize)) {
412 mapbase = offset - mod;
413 mapsize = ((size + mod + src->pagesize - 1) / src->pagesize) * src->pagesize;
414 /* printf("not on page boundaries, resizing map to %d+%d\n",mapbase,mapsize);*/
415 map = gst_filesrc_map_region(src, mapbase, mapsize);
419 ret = gst_buffer_create_sub (map, offset - mapbase, size);
420 GST_BUFFER_OFFSET (ret) = GST_BUFFER_OFFSET (map) + offset - mapbase;
422 gst_buffer_unref (map);
427 return gst_filesrc_map_region(src,offset,size);
431 * gst_filesrc_get_mmap:
432 * @pad: #GstPad to push a buffer from
434 * Push a new buffer from the filesrc at the current offset.
437 gst_filesrc_get_mmap (GstFileSrc *src)
439 GstBuffer *buf = NULL;
440 size_t readsize, mapsize;
441 off_t readend,mapstart,mapend;
444 /* calculate end pointers so we don't have to do so repeatedly later */
445 readsize = src->block_size;
446 readend = src->curoffset + src->block_size; /* note this is the byte *after* the read */
447 mapstart = GST_BUFFER_OFFSET (src->mapbuf);
448 mapsize = GST_BUFFER_SIZE (src->mapbuf);
449 mapend = mapstart + mapsize; /* note this is the byte *after* the map */
451 /* check to see if we're going to overflow the end of the file */
452 if (readend > src->filelen) {
453 if (!gst_filesrc_check_filesize (src) || readend > src->filelen) {
454 readsize = src->filelen - src->curoffset;
455 readend = src->curoffset + readsize;
459 GST_LOG ("attempting to read %08lx, %08lx, %08lx, %08lx",
460 (unsigned long)readsize, (unsigned long)readend,
461 (unsigned long)mapstart, (unsigned long)mapend);
463 /* if the start is past the mapstart */
464 if (src->curoffset >= mapstart) {
465 /* if the end is before the mapend, the buffer is in current mmap region... */
466 /* ('cause by definition if readend is in the buffer, so's readstart) */
467 if (readend <= mapend) {
468 GST_LOG_OBJECT (src, "read buf %llu+%d lives in current mapbuf %lld+%d, creating subbuffer of mapbuf",
469 src->curoffset, readsize, mapstart, mapsize);
470 buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - mapstart,
472 GST_BUFFER_OFFSET (buf) = src->curoffset;
474 /* if the start actually is within the current mmap region, map an overlap buffer */
475 } else if (src->curoffset < mapend) {
476 GST_LOG_OBJECT (src, "read buf %llu+%d starts in mapbuf %d+%d but ends outside, creating new mmap",
477 (unsigned long long) src->curoffset, (gint) readsize, (gint) mapstart, (gint) mapsize);
478 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
483 /* the only other option is that buffer is totally outside, which means we search for it */
485 /* now we can assume that the start is *before* the current mmap region */
486 /* if the readend is past mapstart, we have two options */
487 } else if (readend >= mapstart) {
488 /* either the read buffer overlaps the start of the mmap region */
489 /* or the read buffer fully contains the current mmap region */
490 /* either way, it's really not relevant, we just create a new region anyway*/
491 GST_LOG_OBJECT (src, "read buf %llu+%d starts before mapbuf %d+%d, but overlaps it",
492 (unsigned long long) src->curoffset, (gint) readsize, (gint) mapstart, (gint) mapsize);
493 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
498 /* then deal with the case where the read buffer is totally outside */
500 /* first check to see if there's a map that covers the right region already */
501 GST_LOG_OBJECT (src, "searching for mapbuf to cover %llu+%d",src->curoffset,readsize);
503 /* if the read buffer crosses a mmap region boundary, create a one-off region */
504 if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) {
505 GST_LOG_OBJECT (src, "read buf %llu+%d crosses a %d-byte boundary, creating a one-off",
506 src->curoffset,readsize,src->mapsize);
507 buf = gst_filesrc_map_small_region (src, src->curoffset, readsize);
511 /* otherwise we will create a new mmap region and set it to the default */
515 off_t nextmap = src->curoffset - (src->curoffset % src->mapsize);
516 GST_LOG_OBJECT (src, "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering",
517 src->curoffset, readsize, nextmap, src->mapsize);
518 /* first, we're done with the old mapbuf */
519 gst_buffer_unref(src->mapbuf);
520 mapsize = src->mapsize;
522 /* double the mapsize as long as the readsize is smaller */
523 while (readsize - (src->curoffset - nextmap) > mapsize) {
524 GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d", readsize, mapsize);
527 /* create a new one */
528 src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize);
529 if (src->mapbuf == NULL)
533 buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap, readsize);
534 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap;
538 /* if we need to touch the buffer (to bring it into memory), do so */
540 volatile guchar *p = GST_BUFFER_DATA (buf), c;
542 for (i=0; i < GST_BUFFER_SIZE (buf); i += src->pagesize)
546 /* we're done, return the buffer */
547 g_assert (src->curoffset == GST_BUFFER_OFFSET (buf));
548 src->curoffset += GST_BUFFER_SIZE(buf);
553 gst_filesrc_get_read (GstFileSrc *src)
555 GstBuffer *buf = NULL;
559 readsize = src->block_size;
560 if (src->curoffset + readsize > src->filelen) {
561 if (!gst_filesrc_check_filesize (src) || src->curoffset + readsize > src->filelen) {
562 readsize = src->filelen - src->curoffset;
566 buf = gst_buffer_new_and_alloc (readsize);
567 g_return_val_if_fail (buf != NULL, NULL);
569 ret = read (src->fd, GST_BUFFER_DATA (buf), readsize);
571 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
574 if (ret < readsize) {
575 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), ("unexpected end of file."));
579 GST_BUFFER_SIZE (buf) = readsize;
580 GST_BUFFER_MAXSIZE (buf) = readsize;
581 GST_BUFFER_OFFSET (buf) = src->curoffset;
582 GST_BUFFER_OFFSET_END (buf) = src->curoffset + readsize;
583 src->curoffset += readsize;
589 gst_filesrc_get (GstPad *pad)
593 g_return_val_if_fail (pad != NULL, NULL);
594 src = GST_FILESRC (gst_pad_get_parent (pad));
595 g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN), NULL);
597 /* check for flush */
598 if (src->need_flush) {
599 src->need_flush = FALSE;
600 GST_DEBUG_OBJECT (src, "sending flush");
601 return GST_DATA (gst_event_new_flush ());
604 if (src->seek_happened) {
607 src->seek_happened = FALSE;
608 GST_DEBUG_OBJECT (src, "sending discont");
609 event = gst_event_new_discontinuous (FALSE, GST_FORMAT_BYTES, src->curoffset, NULL);
610 return GST_DATA (event);
614 g_assert (src->curoffset <= src->filelen);
615 if (src->curoffset == src->filelen) {
616 if (!gst_filesrc_check_filesize (src) || src->curoffset >= src->filelen) {
617 GST_DEBUG_OBJECT (src, "eos %" G_GINT64_FORMAT" %" G_GINT64_FORMAT,
618 src->curoffset, src->filelen);
619 gst_element_set_eos (GST_ELEMENT (src));
620 return GST_DATA (gst_event_new (GST_EVENT_EOS));
624 if (src->using_mmap){
625 return GST_DATA (gst_filesrc_get_mmap (src));
627 return GST_DATA (gst_filesrc_get_read (src));
631 /* TRUE if the filesize of the file was updated */
633 gst_filesrc_check_filesize (GstFileSrc *src)
635 struct stat stat_results;
637 g_return_val_if_fail (GST_FLAG_IS_SET (src ,GST_FILESRC_OPEN), FALSE);
639 fstat(src->fd, &stat_results);
640 GST_DEBUG_OBJECT (src, "checked filesize on %s (was %"G_GUINT64_FORMAT", is %"G_GUINT64_FORMAT")",
641 src->filename, src->filelen, (guint64) stat_results.st_size);
642 if (src->filelen == (guint64) stat_results.st_size)
644 src->filelen = stat_results.st_size;
647 /* open the file and mmap it, necessary to go to READY state */
649 gst_filesrc_open_file (GstFileSrc *src)
651 g_return_val_if_fail (!GST_FLAG_IS_SET (src ,GST_FILESRC_OPEN), FALSE);
653 if (src->filename == NULL)
655 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
656 (_("No filename specified.")), (NULL));
660 if (src->filename == NULL)
662 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
663 (_("No file specified for reading.")), (NULL));
668 GST_INFO_OBJECT (src, "opening file %s",src->filename);
671 src->fd = open (src->filename, O_RDONLY);
675 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), (NULL));
677 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
678 (_("Could not open file \"%s\" for reading."), src->filename),
682 /* check if it is a regular file, otherwise bail out */
683 struct stat stat_results;
685 fstat(src->fd, &stat_results);
687 if (!S_ISREG(stat_results.st_mode)) {
688 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
689 (_("File \"%s\" isn't a regular file."), src->filename),
695 /* find the file length */
696 src->filelen = stat_results.st_size;
698 /* allocate the first mmap'd region */
699 src->mapbuf = gst_filesrc_map_region (src, 0, src->mapsize);
700 if (src->mapbuf == NULL) {
701 src->using_mmap = FALSE;
703 src->using_mmap = TRUE;
708 GST_FLAG_SET (src, GST_FILESRC_OPEN);
713 /* unmap and close the file */
715 gst_filesrc_close_file (GstFileSrc *src)
717 g_return_if_fail (GST_FLAG_IS_SET (src, GST_FILESRC_OPEN));
722 /* zero out a lot of our state */
728 gst_buffer_unref (src->mapbuf);
732 GST_FLAG_UNSET (src, GST_FILESRC_OPEN);
736 static GstElementStateReturn
737 gst_filesrc_change_state (GstElement *element)
739 GstFileSrc *src = GST_FILESRC(element);
741 switch (GST_STATE_TRANSITION (element)) {
742 case GST_STATE_NULL_TO_READY:
744 case GST_STATE_READY_TO_NULL:
746 case GST_STATE_READY_TO_PAUSED:
747 if (!GST_FLAG_IS_SET (element, GST_FILESRC_OPEN)) {
748 if (!gst_filesrc_open_file (GST_FILESRC (element)))
749 return GST_STATE_FAILURE;
752 case GST_STATE_PAUSED_TO_READY:
753 if (GST_FLAG_IS_SET (element, GST_FILESRC_OPEN))
754 gst_filesrc_close_file (GST_FILESRC (element));
755 src->seek_happened = TRUE;
761 if (GST_ELEMENT_CLASS (parent_class)->change_state)
762 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
764 return GST_STATE_SUCCESS;
768 gst_filesrc_srcpad_query (GstPad *pad, GstQueryType type,
769 GstFormat *format, gint64 *value)
771 GstFileSrc *src = GST_FILESRC (GST_PAD_PARENT (pad));
774 case GST_QUERY_TOTAL:
775 if (*format != GST_FORMAT_BYTES) {
778 gst_filesrc_check_filesize (src);
779 *value = src->filelen;
781 case GST_QUERY_POSITION:
783 case GST_FORMAT_BYTES:
784 *value = src->curoffset;
786 case GST_FORMAT_PERCENT:
787 if (src->filelen == 0)
789 *value = src->curoffset * GST_FORMAT_PERCENT_MAX / src->filelen;
803 gst_filesrc_srcpad_event (GstPad *pad, GstEvent *event)
805 GstFileSrc *src = GST_FILESRC (GST_PAD_PARENT (pad));
807 GST_DEBUG_OBJECT (src, "event %d", GST_EVENT_TYPE (event));
809 switch (GST_EVENT_TYPE (event)) {
814 if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES) {
818 offset = GST_EVENT_SEEK_OFFSET (event);
820 switch (GST_EVENT_SEEK_METHOD (event)) {
821 case GST_SEEK_METHOD_SET:
822 if (offset > src->filelen && (!gst_filesrc_check_filesize (src) || offset > src->filelen)) {
825 src->curoffset = offset;
826 GST_DEBUG_OBJECT (src, "seek set pending to %" G_GINT64_FORMAT, src->curoffset);
828 case GST_SEEK_METHOD_CUR:
829 if (offset + src->curoffset > src->filelen)
830 if (!gst_filesrc_check_filesize (src) || offset + src->curoffset > src->filelen)
832 src->curoffset += offset;
833 GST_DEBUG_OBJECT (src, "seek cur pending to %" G_GINT64_FORMAT, src->curoffset);
835 case GST_SEEK_METHOD_END:
836 if (ABS (offset) > src->filelen) {
837 if (!gst_filesrc_check_filesize (src) || ABS (offset) > src->filelen)
841 src->curoffset = src->filelen - ABS (offset);
842 GST_DEBUG_OBJECT (src, "seek end pending to %" G_GINT64_FORMAT, src->curoffset);
848 src->seek_happened = TRUE;
849 src->need_flush = GST_EVENT_SEEK_FLAGS(event) & GST_SEEK_FLAG_FLUSH;
853 if (GST_EVENT_SIZE_FORMAT (event) != GST_FORMAT_BYTES) {
856 src->block_size = GST_EVENT_SIZE_VALUE (event);
857 g_object_notify (G_OBJECT (src), "blocksize");
859 case GST_EVENT_FLUSH:
860 src->need_flush = TRUE;
866 gst_event_unref (event);
870 gst_event_unref (event);
874 /*** GSTURIHANDLER INTERFACE *************************************************/
877 gst_filesrc_uri_get_type (void)
882 gst_filesrc_uri_get_protocols(void)
884 static gchar *protocols[] = {"file", NULL};
888 gst_filesrc_uri_get_uri (GstURIHandler *handler)
890 GstFileSrc *src = GST_FILESRC (handler);
895 gst_filesrc_uri_set_uri (GstURIHandler *handler, const gchar *uri)
897 gchar *protocol, *location;
899 GstFileSrc *src = GST_FILESRC (handler);
901 protocol = gst_uri_get_protocol (uri);
902 if (strcmp (protocol, "file") != 0) {
907 location = gst_uri_get_location (uri);
908 ret = gst_filesrc_set_location (src, location);
915 gst_filesrc_uri_handler_init (gpointer g_iface, gpointer iface_data)
917 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
919 iface->get_type = gst_filesrc_uri_get_type;
920 iface->get_protocols = gst_filesrc_uri_get_protocols;
921 iface->get_uri = gst_filesrc_uri_get_uri;
922 iface->set_uri = gst_filesrc_uri_set_uri;