gstreamer/examples/indexing/indexmpeg.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#include <string.h>
#include <gst/gst.h>
static gboolean verbose = FALSE;
static gboolean quiet = FALSE;
static void
entry_added (GstIndex * index, GstIndexEntry * entry)
{
switch (entry->type) {
case GST_INDEX_ENTRY_ID:
g_print ("id %d describes writer %s\n", entry->id,
GST_INDEX_ID_DESCRIPTION (entry));
break;
case GST_INDEX_ENTRY_FORMAT:
g_print ("%d: registered format %d for %s\n", entry->id,
GST_INDEX_FORMAT_FORMAT (entry), GST_INDEX_FORMAT_KEY (entry));
break;
case GST_INDEX_ENTRY_ASSOCIATION:
{
gint i;
g_print ("%p, %d: %08x ", entry, entry->id,
GST_INDEX_ASSOC_FLAGS (entry));
for (i = 0; i < GST_INDEX_NASSOCS (entry); i++) {
g_print ("%d %" G_GINT64_FORMAT " ", GST_INDEX_ASSOC_FORMAT (entry, i),
GST_INDEX_ASSOC_VALUE (entry, i));
}
g_print ("\n");
break;
}
default:
break;
}
}
typedef struct
{
const gchar *padname;
GstPad *target;
GstElement *bin;
GstElement *pipeline;
GstIndex *index;
}
dyn_link;
static void
dynamic_link (GstPadTemplate * templ, GstPad * newpad, gpointer data)
{
dyn_link *link = (dyn_link *) data;
if (!strcmp (gst_pad_get_name (newpad), link->padname)) {
gst_element_set_state (link->pipeline, GST_STATE_PAUSED);
gst_bin_add (GST_BIN (link->pipeline), link->bin);
gst_pad_link (newpad, link->target);
gst_element_set_index (link->bin, link->index);
gst_element_set_state (link->pipeline, GST_STATE_PLAYING);
}
}
static void
setup_dynamic_linking (GstElement * pipeline,
GstElement * element,
const gchar * padname, GstPad * target, GstElement * bin, GstIndex * index)
{
dyn_link *link;
link = g_new0 (dyn_link, 1);
link->padname = g_strdup (padname);
link->target = target;
link->bin = bin;
link->pipeline = pipeline;
link->index = index;
g_signal_connect (G_OBJECT (element), "new_pad", G_CALLBACK (dynamic_link),
link);
}
static GstElement *
make_mpeg_systems_pipeline (const gchar * path, GstIndex * index)
{
GstElement *pipeline;
GstElement *src, *demux;
pipeline = gst_pipeline_new ("pipeline");
src = gst_element_factory_make ("filesrc", "src");
g_object_set (G_OBJECT (src), "location", path, NULL);
demux = gst_element_factory_make ("mpegdemux", "demux");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), demux);
if (index) {
gst_element_set_index (pipeline, index);
}
gst_element_link_pads (src, "src", demux, "sink");
return pipeline;
}
static GstElement *
make_mpeg_decoder_pipeline (const gchar * path, GstIndex * index)
{
GstElement *pipeline;
GstElement *src, *demux;
GstElement *video_bin, *audio_bin;
GstElement *video_decoder, *audio_decoder;
pipeline = gst_pipeline_new ("pipeline");
src = gst_element_factory_make ("filesrc", "src");
g_object_set (G_OBJECT (src), "location", path, NULL);
demux = gst_element_factory_make ("mpegdemux", "demux");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), demux);
gst_element_link_pads (src, "src", demux, "sink");
video_bin = gst_bin_new ("video_bin");
video_decoder = gst_element_factory_make ("mpeg2dec", "video_decoder");
gst_bin_add (GST_BIN (video_bin), video_decoder);
setup_dynamic_linking (pipeline, demux, "video_00",
gst_element_get_pad (video_decoder, "sink"), video_bin, index);
audio_bin = gst_bin_new ("audio_bin");
audio_decoder = gst_element_factory_make ("mad", "audio_decoder");
setup_dynamic_linking (pipeline, demux, "audio_00",
gst_element_get_pad (audio_decoder, "sink"), audio_bin, index);
gst_bin_add (GST_BIN (audio_bin), audio_decoder);
if (index) {
gst_element_set_index (pipeline, index);
}
return pipeline;
}
static void
print_progress (GstPad * pad)
{
gint i = 0;
gchar status[53];
GstFormat format;
gboolean res;
gint64 value;
gint percent = 0;
status[0] = '|';
format = GST_FORMAT_PERCENT;
res = gst_pad_query (pad, GST_QUERY_POSITION, &format, &value);
if (res) {
percent = value / (2 * GST_FORMAT_PERCENT_SCALE);
}
for (i = 0; i < percent; i++) {
status[i + 1] = '=';
}
for (i = percent; i < 50; i++) {
status[i + 1] = ' ';
}
status[51] = '|';
status[52] = 0;
g_print ("%s\r", status);
}
gint
main (gint argc, gchar * argv[])
{
GstElement *pipeline;
GstElement *src;
GstPad *pad;
GstIndex *index;
gint count = 0;
GstEvent *event;
gboolean res;
GstElement *sink;
struct poptOption options[] = {
{"verbose", 'v', POPT_ARG_NONE | POPT_ARGFLAG_STRIP, &verbose, 0,
"Print index entries", NULL},
{"quiet", 'q', POPT_ARG_NONE | POPT_ARGFLAG_STRIP, &quiet, 0,
"don't print progress bar", NULL},
POPT_TABLEEND
};
if (!gst_init_check_with_popt_table (&argc, &argv, options) || argc < 3) {
g_print ("usage: %s [-v] <type> <filename> \n"
" type can be: 0 mpeg_systems\n"
" 1 mpeg_decoder\n"
" -v : report added index entries\n"
" -q : don't print progress\n", argv[0]);
return -1;
}
/* create index that elements can fill */
index = gst_index_factory_make ("memindex");
if (index) {
if (verbose)
g_signal_connect (G_OBJECT (index), "entry_added",
G_CALLBACK (entry_added), NULL);
g_object_set (G_OBJECT (index), "resolver", 1, NULL);
}
/* construct pipeline */
switch (atoi (argv[1])) {
case 0:
pipeline = make_mpeg_systems_pipeline (argv[2], index);
break;
case 1:
pipeline = make_mpeg_decoder_pipeline (argv[2], index);
break;
default:
g_print ("unknown type %d\n", atoi (argv[1]));
return -1;
}
/* setup some default info/error handlers */
g_signal_connect (G_OBJECT (pipeline), "deep_notify",
G_CALLBACK (gst_element_default_deep_notify), NULL);
g_signal_connect (G_OBJECT (pipeline), "error",
G_CALLBACK (gst_element_default_error), NULL);
/* get a pad to perform progress reporting on */
src = gst_bin_get_by_name (GST_BIN (pipeline), "src");
pad = gst_element_get_pad (src, "src");
/* prepare for iteration */
gst_element_set_state (pipeline, GST_STATE_PLAYING);
g_print ("indexing %s...\n", argv[2]);
/* run through the complete stream to let it generate an index */
while (gst_bin_iterate (GST_BIN (pipeline))) {
if (!quiet && (count % 1000 == 0)) {
print_progress (pad);
}
count++;
}
g_print ("\n");
/* bring to ready to restart the pipeline */
gst_element_set_state (pipeline, GST_STATE_READY);
gst_element_set_state (pipeline, GST_STATE_PAUSED);
if (index)
GST_OBJECT_FLAG_UNSET (index, GST_INDEX_WRITABLE);
src = gst_bin_get_by_name (GST_BIN (pipeline), "video_decoder");
{
gint id;
GstIndexEntry *entry;
gint64 result;
gint total_tm;
gst_index_get_writer_id (index, GST_OBJECT (src), &id);
entry = gst_index_get_assoc_entry (index, id, GST_INDEX_LOOKUP_BEFORE, 0,
GST_FORMAT_TIME, G_MAXINT64);
g_assert (entry);
gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &result);
total_tm = result * 60 / GST_SECOND;
g_print ("total time = %.2fs\n", total_tm / 60.0);
}
pad = gst_element_get_pad (src, "src");
sink = gst_element_factory_make ("fakesink", "sink");
gst_element_link_pads (src, "src", sink, "sink");
gst_bin_add (GST_BIN (pipeline), sink);
g_print ("seeking %s...\n", argv[2]);
event = gst_event_new_seek (GST_FORMAT_TIME |
GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH, 5 * GST_SECOND);
res = gst_pad_send_event (pad, event);
if (!res) {
g_warning ("seek failed");
}
gst_element_set_state (pipeline, GST_STATE_PLAYING);
count = 0;
while (gst_bin_iterate (GST_BIN (pipeline))) {
if (!quiet && (count % 1000 == 0)) {
print_progress (pad);
}
count++;
}
gst_element_set_state (pipeline, GST_STATE_NULL);
return 1;
}