diff options
Diffstat (limited to 'ext/gio/gstgiobasesrc.c')
| -rw-r--r-- | ext/gio/gstgiobasesrc.c | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/ext/gio/gstgiobasesrc.c b/ext/gio/gstgiobasesrc.c deleted file mode 100644 index 133e12c2..00000000 --- a/ext/gio/gstgiobasesrc.c +++ /dev/null @@ -1,447 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2007 Rene Stadler <mail@renestadler.de> - * Copyright (C) 2007-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include "gstgiobasesrc.h" - -#include <gst/base/gsttypefindhelper.h> - -GST_DEBUG_CATEGORY_STATIC (gst_gio_base_src_debug); -#define GST_CAT_DEFAULT gst_gio_base_src_debug - -static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS_ANY); - -GST_BOILERPLATE (GstGioBaseSrc, gst_gio_base_src, GstBaseSrc, - GST_TYPE_BASE_SRC); - -static void gst_gio_base_src_finalize (GObject * object); - -static gboolean gst_gio_base_src_start (GstBaseSrc * base_src); -static gboolean gst_gio_base_src_stop (GstBaseSrc * base_src); -static gboolean gst_gio_base_src_get_size (GstBaseSrc * base_src, - guint64 * size); -static gboolean gst_gio_base_src_is_seekable (GstBaseSrc * base_src); -static gboolean gst_gio_base_src_unlock (GstBaseSrc * base_src); -static gboolean gst_gio_base_src_unlock_stop (GstBaseSrc * base_src); -static gboolean gst_gio_base_src_check_get_range (GstBaseSrc * base_src); -static GstFlowReturn gst_gio_base_src_create (GstBaseSrc * base_src, - guint64 offset, guint size, GstBuffer ** buf); -static gboolean gst_gio_base_src_query (GstBaseSrc * base_src, - GstQuery * query); - -static void -gst_gio_base_src_base_init (gpointer gclass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); - - GST_DEBUG_CATEGORY_INIT (gst_gio_base_src_debug, "gio_base_src", 0, - "GIO base source"); - - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&src_factory)); -} - -static void -gst_gio_base_src_class_init (GstGioBaseSrcClass * klass) -{ - GObjectClass *gobject_class = (GObjectClass *) klass; - GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass; - - gobject_class->finalize = gst_gio_base_src_finalize; - - gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_gio_base_src_start); - gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_gio_base_src_stop); - gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_gio_base_src_get_size); - gstbasesrc_class->is_seekable = - GST_DEBUG_FUNCPTR (gst_gio_base_src_is_seekable); - gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_gio_base_src_unlock); - gstbasesrc_class->unlock_stop = - GST_DEBUG_FUNCPTR (gst_gio_base_src_unlock_stop); - gstbasesrc_class->check_get_range = - GST_DEBUG_FUNCPTR (gst_gio_base_src_check_get_range); - gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_gio_base_src_create); - gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_gio_base_src_query); -} - -static void -gst_gio_base_src_init (GstGioBaseSrc * src, GstGioBaseSrcClass * gclass) -{ - src->cancel = g_cancellable_new (); -} - -static void -gst_gio_base_src_finalize (GObject * object) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (object); - - if (src->cancel) { - g_object_unref (src->cancel); - src->cancel = NULL; - } - - if (src->stream) { - g_object_unref (src->stream); - src->stream = NULL; - } - - if (src->cache) { - gst_buffer_unref (src->cache); - src->cache = NULL; - } - - GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); -} - -static gboolean -gst_gio_base_src_start (GstBaseSrc * base_src) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - GstGioBaseSrcClass *gbsrc_class = GST_GIO_BASE_SRC_GET_CLASS (src); - - src->position = 0; - - /* FIXME: This will likely block */ - src->stream = gbsrc_class->get_stream (src); - if (G_UNLIKELY (!G_IS_INPUT_STREAM (src->stream))) { - GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), - ("No input stream provided by subclass")); - return FALSE; - } else if (G_UNLIKELY (g_input_stream_is_closed (src->stream))) { - GST_ELEMENT_ERROR (src, LIBRARY, FAILED, (NULL), - ("Input stream is already closed")); - return FALSE; - } - - if (G_IS_SEEKABLE (src->stream)) - src->position = g_seekable_tell (G_SEEKABLE (src->stream)); - - GST_DEBUG_OBJECT (src, "started source"); - - return TRUE; -} - -static gboolean -gst_gio_base_src_stop (GstBaseSrc * base_src) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - GstGioBaseSrcClass *klass = GST_GIO_BASE_SRC_GET_CLASS (src); - gboolean success; - GError *err = NULL; - - if (klass->close_on_stop && G_IS_INPUT_STREAM (src->stream)) { - GST_DEBUG_OBJECT (src, "closing stream"); - - /* FIXME: can block but unfortunately we can't use async operations - * here because they require a running main loop */ - success = g_input_stream_close (src->stream, src->cancel, &err); - - if (!success && !gst_gio_error (src, "g_input_stream_close", &err, NULL)) { - GST_ELEMENT_WARNING (src, RESOURCE, CLOSE, (NULL), - ("g_input_stream_close failed: %s", err->message)); - g_clear_error (&err); - } else if (!success) { - GST_ELEMENT_WARNING (src, RESOURCE, CLOSE, (NULL), - ("g_input_stream_close failed")); - } else { - GST_DEBUG_OBJECT (src, "g_input_stream_close succeeded"); - } - - g_object_unref (src->stream); - src->stream = NULL; - } else { - g_object_unref (src->stream); - src->stream = NULL; - } - - return TRUE; -} - -static gboolean -gst_gio_base_src_get_size (GstBaseSrc * base_src, guint64 * size) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - - if (G_IS_FILE_INPUT_STREAM (src->stream)) { - GFileInfo *info; - GError *err = NULL; - - info = g_file_input_stream_query_info (G_FILE_INPUT_STREAM (src->stream), - G_FILE_ATTRIBUTE_STANDARD_SIZE, src->cancel, &err); - - if (info != NULL) { - *size = g_file_info_get_size (info); - g_object_unref (info); - GST_DEBUG_OBJECT (src, "found size: %" G_GUINT64_FORMAT, *size); - return TRUE; - } - - if (!gst_gio_error (src, "g_file_input_stream_query_info", &err, NULL)) { - - if (GST_GIO_ERROR_MATCHES (err, NOT_SUPPORTED)) - GST_DEBUG_OBJECT (src, "size information not available"); - else - GST_WARNING_OBJECT (src, "size information retrieval failed: %s", - err->message); - - g_clear_error (&err); - } - } - - if (GST_GIO_STREAM_IS_SEEKABLE (src->stream)) { - goffset old; - goffset stream_size; - gboolean ret; - GSeekable *seekable = G_SEEKABLE (src->stream); - GError *err = NULL; - - old = g_seekable_tell (seekable); - - ret = g_seekable_seek (seekable, 0, G_SEEK_END, src->cancel, &err); - if (!ret) { - if (!gst_gio_error (src, "g_seekable_seek", &err, NULL)) { - if (GST_GIO_ERROR_MATCHES (err, NOT_SUPPORTED)) - GST_DEBUG_OBJECT (src, - "Seeking to the end of stream is not supported"); - else - GST_WARNING_OBJECT (src, "Seeking to end of stream failed: %s", - err->message); - g_clear_error (&err); - } else { - GST_WARNING_OBJECT (src, "Seeking to end of stream failed"); - } - return FALSE; - } - - stream_size = g_seekable_tell (seekable); - - ret = g_seekable_seek (seekable, old, G_SEEK_SET, src->cancel, &err); - if (!ret) { - if (!gst_gio_error (src, "g_seekable_seek", &err, NULL)) { - if (GST_GIO_ERROR_MATCHES (err, NOT_SUPPORTED)) - GST_ERROR_OBJECT (src, "Seeking to the old position not supported"); - else - GST_ERROR_OBJECT (src, "Seeking to the old position failed: %s", - err->message); - g_clear_error (&err); - } else { - GST_ERROR_OBJECT (src, "Seeking to the old position faile"); - } - return FALSE; - } - - if (stream_size >= 0) { - *size = stream_size; - return TRUE; - } - } - - return FALSE; -} - -static gboolean -gst_gio_base_src_is_seekable (GstBaseSrc * base_src) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - gboolean seekable; - - seekable = GST_GIO_STREAM_IS_SEEKABLE (src->stream); - - GST_DEBUG_OBJECT (src, "can seek: %d", seekable); - - return seekable; -} - -static gboolean -gst_gio_base_src_unlock (GstBaseSrc * base_src) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - - GST_LOG_OBJECT (src, "triggering cancellation"); - - g_cancellable_cancel (src->cancel); - - return TRUE; -} - -static gboolean -gst_gio_base_src_unlock_stop (GstBaseSrc * base_src) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - - GST_LOG_OBJECT (src, "resetting cancellable"); - - g_cancellable_reset (src->cancel); - - return TRUE; -} - -static gboolean -gst_gio_base_src_check_get_range (GstBaseSrc * base_src) -{ - return GST_CALL_PARENT_WITH_DEFAULT (GST_BASE_SRC_CLASS, - check_get_range, (base_src), FALSE); -} - -static GstFlowReturn -gst_gio_base_src_create (GstBaseSrc * base_src, guint64 offset, guint size, - GstBuffer ** buf_return) -{ - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - GstBuffer *buf; - GstFlowReturn ret = GST_FLOW_OK; - - g_return_val_if_fail (G_IS_INPUT_STREAM (src->stream), GST_FLOW_ERROR); - - /* If we have the requested part in our cache take a subbuffer of that, - * otherwise fill the cache again with at least 4096 bytes from the - * requested offset and return a subbuffer of that. - * - * We need caching because every read/seek operation will need to go - * over DBus if our backend is GVfs and this is painfully slow. */ - if (src->cache && offset >= GST_BUFFER_OFFSET (src->cache) && - offset + size <= GST_BUFFER_OFFSET_END (src->cache)) { - GST_DEBUG_OBJECT (src, "Creating subbuffer from cached buffer: offset %" - G_GUINT64_FORMAT " length %u", offset, size); - - buf = gst_buffer_create_sub (src->cache, - offset - GST_BUFFER_OFFSET (src->cache), size); - - GST_BUFFER_OFFSET (buf) = offset; - GST_BUFFER_OFFSET_END (buf) = offset + size; - GST_BUFFER_SIZE (buf) = size; - } else { - guint cachesize = MAX (4096, size); - gssize read, res; - gboolean success, eos; - GError *err = NULL; - - if (src->cache) { - gst_buffer_unref (src->cache); - src->cache = NULL; - } - - if (G_UNLIKELY (offset != src->position)) { - if (!GST_GIO_STREAM_IS_SEEKABLE (src->stream)) - return GST_FLOW_NOT_SUPPORTED; - - GST_DEBUG_OBJECT (src, "Seeking to position %" G_GUINT64_FORMAT, offset); - ret = gst_gio_seek (src, G_SEEKABLE (src->stream), offset, src->cancel); - - if (ret == GST_FLOW_OK) - src->position = offset; - else - return ret; - } - - src->cache = gst_buffer_try_new_and_alloc (cachesize); - if (G_UNLIKELY (src->cache == NULL)) { - GST_ERROR_OBJECT (src, "Failed to allocate %u bytes", cachesize); - return GST_FLOW_ERROR; - } - - GST_LOG_OBJECT (src, "Reading %u bytes from offset %" G_GUINT64_FORMAT, - cachesize, offset); - - /* GIO sometimes gives less bytes than requested although - * it's not at the end of file. SMB for example only - * supports reads up to 64k. So we loop here until we get at - * at least the requested amount of bytes or a read returns - * nothing. */ - read = 0; - while (size - read > 0 && (res = - g_input_stream_read (G_INPUT_STREAM (src->stream), - GST_BUFFER_DATA (src->cache) + read, cachesize - read, - src->cancel, &err)) > 0) { - read += res; - } - - success = (read >= 0); - eos = (cachesize > 0 && read == 0); - - if (!success && !gst_gio_error (src, "g_input_stream_read", &err, &ret)) { - GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), - ("Could not read from stream: %s", err->message)); - g_clear_error (&err); - } - - if (success && !eos) { - src->position += read; - GST_BUFFER_SIZE (src->cache) = read; - - GST_BUFFER_OFFSET (src->cache) = offset; - GST_BUFFER_OFFSET_END (src->cache) = offset + read; - - GST_DEBUG_OBJECT (src, "Read successful"); - GST_DEBUG_OBJECT (src, "Creating subbuffer from new " - "cached buffer: offset %" G_GUINT64_FORMAT " length %u", offset, - size); - - buf = gst_buffer_create_sub (src->cache, 0, MIN (size, read)); - - GST_BUFFER_OFFSET (buf) = offset; - GST_BUFFER_OFFSET_END (buf) = offset + MIN (size, read); - GST_BUFFER_SIZE (buf) = MIN (size, read); - } else { - GST_DEBUG_OBJECT (src, "Read not successful"); - gst_buffer_unref (src->cache); - src->cache = NULL; - buf = NULL; - } - - if (eos) - ret = GST_FLOW_UNEXPECTED; - } - - *buf_return = buf; - - return ret; -} - -static gboolean -gst_gio_base_src_query (GstBaseSrc * base_src, GstQuery * query) -{ - gboolean ret = FALSE; - GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src); - - switch (GST_QUERY_TYPE (query)) { - case GST_QUERY_URI: - if (GST_IS_URI_HANDLER (src)) { - const gchar *uri = gst_uri_handler_get_uri (GST_URI_HANDLER (src)); - gst_query_set_uri (query, uri); - ret = TRUE; - } - break; - default: - ret = FALSE; - break; - } - - if (!ret) - ret = GST_BASE_SRC_CLASS (parent_class)->query (base_src, query); - - return ret; -} |