2 * Copyright (C) 2006 David A. Schleef <ds@schleef.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 * SECTION:element-multifilesrc
23 * @see_also: #GstFileSrc
25 * Reads buffers from sequentially named files. If used together with an image
26 * decoder, one needs to use the #GstMultiFileSrc:caps property or a capsfilter
27 * to force to caps containing a framerate. Otherwise image decoders send EOS
28 * after the first picture.
30 * File names are created by replacing "\%d" with the index using printf().
33 * <title>Example launch line</title>
35 * gst-launch multifilesrc location="img.%04d.png" index=0 caps="image/png,framerate=\(fraction\)12/1" ! \
36 * pngdec ! ffmpegcolorspace ! theoraenc ! oggmux ! \
37 * filesink location="images.ogg"
38 * ]| This pipeline creates a video file "images.ogg" by joining multiple PNG
39 * files named img.0000.png, img.0001.png, etc.
47 #include "gstmultifilesrc.h"
50 static GstFlowReturn gst_multi_file_src_create (GstPushSrc * src,
53 static void gst_multi_file_src_dispose (GObject * object);
55 static void gst_multi_file_src_set_property (GObject * object, guint prop_id,
56 const GValue * value, GParamSpec * pspec);
57 static void gst_multi_file_src_get_property (GObject * object, guint prop_id,
58 GValue * value, GParamSpec * pspec);
59 static GstCaps *gst_multi_file_src_getcaps (GstBaseSrc * src, GstCaps * filter);
60 static gboolean gst_multi_file_src_query (GstBaseSrc * src, GstQuery * query);
63 static GstStaticPadTemplate gst_multi_file_src_pad_template =
64 GST_STATIC_PAD_TEMPLATE ("src",
69 GST_DEBUG_CATEGORY_STATIC (gst_multi_file_src_debug);
70 #define GST_CAT_DEFAULT gst_multi_file_src_debug
80 #define DEFAULT_LOCATION "%05d"
81 #define DEFAULT_INDEX 0
83 #define gst_multi_file_src_parent_class parent_class
84 G_DEFINE_TYPE (GstMultiFileSrc, gst_multi_file_src, GST_TYPE_PUSH_SRC);
88 gst_multi_file_src_class_init (GstMultiFileSrcClass * klass)
90 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
91 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
92 GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
93 GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
95 gobject_class->set_property = gst_multi_file_src_set_property;
96 gobject_class->get_property = gst_multi_file_src_get_property;
98 g_object_class_install_property (gobject_class, ARG_LOCATION,
99 g_param_spec_string ("location", "File Location",
100 "Pattern to create file names of input files. File names are "
101 "created by calling sprintf() with the pattern and the current "
102 "index.", DEFAULT_LOCATION,
103 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
104 g_object_class_install_property (gobject_class, ARG_INDEX,
105 g_param_spec_int ("index", "File Index",
106 "Index to use with location property to create file names. The "
107 "index is incremented by one for each buffer read.",
108 0, INT_MAX, DEFAULT_INDEX,
109 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
110 g_object_class_install_property (gobject_class, ARG_CAPS,
111 g_param_spec_boxed ("caps", "Caps",
112 "Caps describing the format of the data.",
113 GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
115 gobject_class->dispose = gst_multi_file_src_dispose;
117 gstbasesrc_class->get_caps = gst_multi_file_src_getcaps;
118 gstbasesrc_class->query = gst_multi_file_src_query;
120 gstpushsrc_class->create = gst_multi_file_src_create;
122 if (sizeof (off_t) < 8) {
123 GST_LOG ("No large file support, sizeof (off_t) = %" G_GSIZE_FORMAT,
127 GST_DEBUG_CATEGORY_INIT (gst_multi_file_src_debug, "multifilesrc", 0,
128 "multifilesrc element");
130 gst_element_class_add_pad_template (gstelement_class,
131 gst_static_pad_template_get (&gst_multi_file_src_pad_template));
132 gst_element_class_set_details_simple (gstelement_class, "Multi-File Source",
134 "Read a sequentially named set of files into buffers",
135 "David Schleef <ds@schleef.org>");
139 gst_multi_file_src_init (GstMultiFileSrc * multifilesrc)
141 multifilesrc->index = DEFAULT_INDEX;
142 multifilesrc->filename = g_strdup (DEFAULT_LOCATION);
143 multifilesrc->successful_read = FALSE;
147 gst_multi_file_src_dispose (GObject * object)
149 GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
151 g_free (src->filename);
152 src->filename = NULL;
154 gst_caps_unref (src->caps);
156 G_OBJECT_CLASS (parent_class)->dispose (object);
160 gst_multi_file_src_getcaps (GstBaseSrc * src, GstCaps * filter)
162 GstMultiFileSrc *multi_file_src = GST_MULTI_FILE_SRC (src);
164 GST_DEBUG_OBJECT (src, "returning %" GST_PTR_FORMAT, multi_file_src->caps);
166 if (multi_file_src->caps) {
168 return gst_caps_intersect_full (filter, multi_file_src->caps,
169 GST_CAPS_INTERSECT_FIRST);
171 return gst_caps_ref (multi_file_src->caps);
174 return gst_caps_ref (filter);
176 return gst_caps_new_any ();
181 gst_multi_file_src_query (GstBaseSrc * src, GstQuery * query)
184 GstMultiFileSrc *mfsrc;
186 mfsrc = GST_MULTI_FILE_SRC (src);
188 switch (GST_QUERY_TYPE (query)) {
189 case GST_QUERY_POSITION:
193 gst_query_parse_position (query, &format, NULL);
195 case GST_FORMAT_BUFFERS:
196 case GST_FORMAT_DEFAULT:
197 gst_query_set_position (query, GST_FORMAT_BUFFERS, mfsrc->index);
201 res = GST_BASE_SRC_CLASS (parent_class)->query (src, query);
207 res = GST_BASE_SRC_CLASS (parent_class)->query (src, query);
214 gst_multi_file_src_set_location (GstMultiFileSrc * src, const gchar * location)
216 g_free (src->filename);
217 if (location != NULL) {
218 src->filename = g_strdup (location);
220 src->filename = NULL;
227 gst_multi_file_src_set_property (GObject * object, guint prop_id,
228 const GValue * value, GParamSpec * pspec)
230 GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
234 gst_multi_file_src_set_location (src, g_value_get_string (value));
237 src->index = g_value_get_int (value);
241 const GstCaps *caps = gst_value_get_caps (value);
245 new_caps = gst_caps_new_any ();
247 new_caps = gst_caps_copy (caps);
249 gst_caps_replace (&src->caps, new_caps);
250 gst_pad_set_caps (GST_BASE_SRC_PAD (src), new_caps);
254 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
260 gst_multi_file_src_get_property (GObject * object, guint prop_id,
261 GValue * value, GParamSpec * pspec)
263 GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
267 g_value_set_string (value, src->filename);
270 g_value_set_int (value, src->index);
273 gst_value_set_caps (value, src->caps);
276 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
282 gst_multi_file_src_get_filename (GstMultiFileSrc * multifilesrc)
286 filename = g_strdup_printf (multifilesrc->filename, multifilesrc->index);
292 gst_multi_file_src_create (GstPushSrc * src, GstBuffer ** buffer)
294 GstMultiFileSrc *multifilesrc;
300 GError *error = NULL;
302 multifilesrc = GST_MULTI_FILE_SRC (src);
304 filename = gst_multi_file_src_get_filename (multifilesrc);
306 GST_DEBUG_OBJECT (multifilesrc, "reading from file \"%s\".", filename);
308 ret = g_file_get_contents (filename, &data, &size, &error);
310 if (multifilesrc->successful_read) {
311 /* If we've read at least one buffer successfully, not finding the
312 * next file is EOS. */
315 g_error_free (error);
316 return GST_FLOW_UNEXPECTED;
322 multifilesrc->successful_read = TRUE;
323 multifilesrc->index++;
325 buf = gst_buffer_new ();
326 gst_buffer_take_memory (buf, -1,
327 gst_memory_new_wrapped (0, data, g_free, size, 0, size));
328 GST_BUFFER_OFFSET (buf) = multifilesrc->offset;
329 GST_BUFFER_OFFSET_END (buf) = multifilesrc->offset + size;
330 multifilesrc->offset += size;
332 GST_DEBUG_OBJECT (multifilesrc, "read file \"%s\".", filename);
341 GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
342 ("Error while reading from file \"%s\".", filename),
343 ("%s", error->message));
344 g_error_free (error);
346 GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
347 ("Error while reading from file \"%s\".", filename),
348 ("%s", g_strerror (errno)));
351 return GST_FLOW_ERROR;