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);
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
83 #define DEFAULT_LOCATION "%05d"
84 #define DEFAULT_INDEX 0
87 GST_BOILERPLATE (GstMultiFileSrc, gst_multi_file_src, GstPushSrc,
91 gst_multi_file_src_base_init (gpointer g_class)
93 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
95 GST_DEBUG_CATEGORY_INIT (gst_multi_file_src_debug, "multifilesrc", 0,
96 "multifilesrc element");
98 gst_element_class_add_static_pad_template (gstelement_class,
99 &gst_multi_file_src_pad_template);
100 gst_element_class_set_details_simple (gstelement_class, "Multi-File Source",
102 "Read a sequentially named set of files into buffers",
103 "David Schleef <ds@schleef.org>");
107 gst_multi_file_src_class_init (GstMultiFileSrcClass * klass)
109 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
110 GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
111 GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
113 gobject_class->set_property = gst_multi_file_src_set_property;
114 gobject_class->get_property = gst_multi_file_src_get_property;
116 g_object_class_install_property (gobject_class, ARG_LOCATION,
117 g_param_spec_string ("location", "File Location",
118 "Pattern to create file names of input files. File names are "
119 "created by calling sprintf() with the pattern and the current "
120 "index.", DEFAULT_LOCATION,
121 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
122 g_object_class_install_property (gobject_class, ARG_INDEX,
123 g_param_spec_int ("index", "File Index",
124 "Index to use with location property to create file names. The "
125 "index is incremented by one for each buffer read.",
126 0, INT_MAX, DEFAULT_INDEX,
127 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
128 g_object_class_install_property (gobject_class, ARG_START_INDEX,
129 g_param_spec_int ("start-index", "Start Index",
130 "Start value of index. The initial value of index can be set "
131 "either by setting index or start-index. When the end of the loop "
132 "is reached, the index will be set to the value start-index.",
133 0, INT_MAX, DEFAULT_INDEX,
134 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
135 g_object_class_install_property (gobject_class, ARG_STOP_INDEX,
136 g_param_spec_int ("stop-index", "Start Index",
137 "Stop value of index. The special value -1 means no stop.",
138 -1, INT_MAX, DEFAULT_INDEX,
139 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
140 g_object_class_install_property (gobject_class, ARG_CAPS,
141 g_param_spec_boxed ("caps", "Caps",
142 "Caps describing the format of the data.",
143 GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
144 g_object_class_install_property (gobject_class, ARG_LOOP,
145 g_param_spec_boolean ("loop", "Loop",
146 "Whether to repeat from the beginning when all files have been read.",
147 FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
149 gobject_class->dispose = gst_multi_file_src_dispose;
151 gstbasesrc_class->get_caps = gst_multi_file_src_getcaps;
152 gstbasesrc_class->query = gst_multi_file_src_query;
154 gstpushsrc_class->create = gst_multi_file_src_create;
156 if (sizeof (off_t) < 8) {
157 GST_LOG ("No large file support, sizeof (off_t) = %" G_GSIZE_FORMAT,
163 gst_multi_file_src_init (GstMultiFileSrc * multifilesrc,
164 GstMultiFileSrcClass * g_class)
166 multifilesrc->start_index = DEFAULT_INDEX;
167 multifilesrc->index = DEFAULT_INDEX;
168 multifilesrc->stop_index = -1;
169 multifilesrc->filename = g_strdup (DEFAULT_LOCATION);
170 multifilesrc->successful_read = FALSE;
174 gst_multi_file_src_dispose (GObject * object)
176 GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
178 g_free (src->filename);
179 src->filename = NULL;
181 gst_caps_unref (src->caps);
183 G_OBJECT_CLASS (parent_class)->dispose (object);
187 gst_multi_file_src_getcaps (GstBaseSrc * src)
189 GstMultiFileSrc *multi_file_src = GST_MULTI_FILE_SRC (src);
191 GST_DEBUG_OBJECT (src, "returning %" GST_PTR_FORMAT, multi_file_src->caps);
193 if (multi_file_src->caps) {
194 return gst_caps_ref (multi_file_src->caps);
196 return gst_caps_new_any ();
201 gst_multi_file_src_query (GstBaseSrc * src, GstQuery * query)
204 GstMultiFileSrc *mfsrc;
206 mfsrc = GST_MULTI_FILE_SRC (src);
208 switch (GST_QUERY_TYPE (query)) {
209 case GST_QUERY_POSITION:
213 gst_query_parse_position (query, &format, NULL);
215 case GST_FORMAT_BUFFERS:
216 case GST_FORMAT_DEFAULT:
217 gst_query_set_position (query, GST_FORMAT_BUFFERS, mfsrc->index);
221 res = GST_BASE_SRC_CLASS (parent_class)->query (src, query);
227 res = GST_BASE_SRC_CLASS (parent_class)->query (src, query);
234 gst_multi_file_src_set_location (GstMultiFileSrc * src, const gchar * location)
236 g_free (src->filename);
237 if (location != NULL) {
238 src->filename = g_strdup (location);
240 src->filename = NULL;
247 gst_multi_file_src_set_property (GObject * object, guint prop_id,
248 const GValue * value, GParamSpec * pspec)
250 GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
254 gst_multi_file_src_set_location (src, g_value_get_string (value));
257 src->index = g_value_get_int (value);
259 case ARG_START_INDEX:
260 src->start_index = g_value_get_int (value);
263 src->stop_index = g_value_get_int (value);
267 const GstCaps *caps = gst_value_get_caps (value);
271 new_caps = gst_caps_new_any ();
273 new_caps = gst_caps_copy (caps);
275 gst_caps_replace (&src->caps, new_caps);
276 gst_pad_set_caps (GST_BASE_SRC_PAD (src), new_caps);
280 src->loop = g_value_get_boolean (value);
283 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
289 gst_multi_file_src_get_property (GObject * object, guint prop_id,
290 GValue * value, GParamSpec * pspec)
292 GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
296 g_value_set_string (value, src->filename);
299 g_value_set_int (value, src->index);
301 case ARG_START_INDEX:
302 g_value_set_int (value, src->start_index);
305 g_value_set_int (value, src->stop_index);
308 gst_value_set_caps (value, src->caps);
311 g_value_set_boolean (value, src->loop);
314 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
320 gst_multi_file_src_get_filename (GstMultiFileSrc * multifilesrc)
324 GST_DEBUG ("%d", multifilesrc->index);
325 filename = g_strdup_printf (multifilesrc->filename, multifilesrc->index);
331 gst_multi_file_src_create (GstPushSrc * src, GstBuffer ** buffer)
333 GstMultiFileSrc *multifilesrc;
339 GError *error = NULL;
341 multifilesrc = GST_MULTI_FILE_SRC (src);
343 if (multifilesrc->index < multifilesrc->start_index) {
344 multifilesrc->index = multifilesrc->start_index;
346 filename = gst_multi_file_src_get_filename (multifilesrc);
348 GST_DEBUG_OBJECT (multifilesrc, "reading from file \"%s\".", filename);
350 ret = g_file_get_contents (filename, &data, &size, &error);
352 if (multifilesrc->successful_read) {
353 /* If we've read at least one buffer successfully, not finding the
354 * next file is EOS. */
357 g_error_free (error);
359 if (multifilesrc->loop) {
361 multifilesrc->index = multifilesrc->start_index;
363 filename = gst_multi_file_src_get_filename (multifilesrc);
364 ret = g_file_get_contents (filename, &data, &size, &error);
368 g_error_free (error);
370 return GST_FLOW_UNEXPECTED;
373 return GST_FLOW_UNEXPECTED;
380 multifilesrc->successful_read = TRUE;
381 multifilesrc->index++;
382 if (multifilesrc->stop_index != -1 &&
383 multifilesrc->index >= multifilesrc->stop_index) {
384 multifilesrc->index = multifilesrc->start_index;
387 buf = gst_buffer_new ();
388 GST_BUFFER_DATA (buf) = (unsigned char *) data;
389 GST_BUFFER_MALLOCDATA (buf) = GST_BUFFER_DATA (buf);
390 GST_BUFFER_SIZE (buf) = size;
391 GST_BUFFER_OFFSET (buf) = multifilesrc->offset;
392 GST_BUFFER_OFFSET_END (buf) = multifilesrc->offset + size;
393 multifilesrc->offset += size;
394 gst_buffer_set_caps (buf, multifilesrc->caps);
396 GST_DEBUG_OBJECT (multifilesrc, "read file \"%s\".", filename);
405 GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
406 ("Error while reading from file \"%s\".", filename),
407 ("%s", error->message));
408 g_error_free (error);
410 GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
411 ("Error while reading from file \"%s\".", filename),
412 ("%s", g_strerror (errno)));
415 return GST_FLOW_ERROR;