Commit ddb8f9f6 authored by Wim Taymans's avatar Wim Taymans
Browse files

Added vorbis stream info extraction example

Original commit message from CVS:
Added vorbis stream info extraction example
parent 5821ffaf
examples = seek spider_seek cdplayer cdparanoia
examples = seek spider_seek cdplayer cdparanoia vorbisfile
noinst_PROGRAMS = $(examples)
# we have nothing but apps here, we can do this safely
LIBS = $(GST_LIBS) $(GTK_LIBS) $(FT2_LIBS)
AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) $(FT2_CFLAGS)
AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
#include <stdlib.h>
#include <gst/gst.h>
#include <string.h>
static gboolean ready = FALSE;
struct probe_context {
GstElement *pipeline;
GstElement *element;
GstPad *pad;
GstFormat ls_format;
gint total_ls;
GstCaps *metadata;
GstCaps *caps;
};
static void
print_metadata (GstCaps *caps)
{
g_print (" metadata:\n");
if (!caps || caps->properties == NULL) {
g_print (" none\n");
return;
}
if (!strcmp (gst_caps_get_mime (caps), "application/x-gst-metadata")) {
GstProps *props = caps->properties;
GList *walk = props->properties;
while (walk) {
GstPropsEntry *entry = (GstPropsEntry *) walk->data;
const gchar *name;
const gchar *str_val;
gint int_val;
GstPropsType type;
name = gst_props_entry_get_name (entry);
type = gst_props_entry_get_type (entry);
switch (type) {
case GST_PROPS_STRING_TYPE:
gst_props_entry_get_string (entry, &str_val);
g_print (" %s='%s'\n", name, str_val);
break;
case GST_PROPS_INT_TYPE:
gst_props_entry_get_int (entry, &int_val);
g_print (" %s=%d\n", name, int_val);
break;
default:
break;
}
walk = g_list_next (walk);
}
}
else {
g_print (" unkown metadata type\n");
}
}
static void
print_format (GstCaps *caps)
{
g_print (" format:\n");
if (!caps || caps->properties == NULL) {
g_print (" unkown\n");
return;
}
if (!strcmp (gst_caps_get_mime (caps), "audio/raw")) {
gint channels;
gint rate;
gst_caps_get_int (caps, "channels", &channels);
gst_caps_get_int (caps, "rate", &rate);
g_print (" channels: %d\n", channels);
g_print (" rate: %d\n", rate);
}
else {
g_print (" unkown format\n");
}
}
static void
print_lbs_info (struct probe_context *context, gint stream)
{
const GstFormat *formats;
g_print (" stream info:\n");
/* report info in all supported formats */
formats = gst_pad_get_formats (context->pad);
while (*formats) {
const GstFormatDefinition *definition;
gint64 value_start, value_end;
gboolean res;
GstFormat format;
if (*formats == context->ls_format) {
formats++;
continue;
}
definition = gst_format_get_details (*formats);
/* get start and end position of this stream */
format = *formats;
res = gst_pad_convert (context->pad,
context->ls_format, stream,
&format, &value_start);
res &= gst_pad_convert (context->pad,
context->ls_format, stream + 1,
&format, &value_end);
if (res) {
/* substract to get the length */
value_end -= value_start;
if (*formats == GST_FORMAT_TIME) {
value_end /= (GST_SECOND/100);
g_print (" %s: %lld:%02lld.%02lld\n", definition->nick,
value_end/6000, (value_end/100)%60, (value_end%100));
}
else {
g_print (" %s: %lld\n", definition->nick, value_end);
}
}
else
g_print (" could not get logical stream %s\n", definition->nick);
formats++;
}
}
static void
deep_notify (GObject *object, GstObject *origin,
GParamSpec *pspec, gpointer data)
{
struct probe_context *context = (struct probe_context *) data;
GValue value = { 0, };
if (!strcmp (pspec->name, "metadata")) {
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
context->metadata = g_value_peek_pointer (&value);
}
else if (!strcmp (pspec->name, "caps")) {
if (GST_IS_PAD (origin) && GST_PAD (origin) == context->pad) {
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
context->caps = g_value_peek_pointer (&value);
ready = TRUE;
}
}
}
static gboolean
collect_logical_stream_properties (struct probe_context *context, gint stream)
{
GstEvent *event;
gboolean res;
gint count;
g_print ("info for logical stream %d:\n", stream);
/* seek to stream */
event = gst_event_new_seek (context->ls_format |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH,
stream);
res = gst_pad_send_event (context->pad, event);
if (!res) {
g_warning ("seek to logical track failed");
return FALSE;
}
/* run the pipeline to get the info */
count = 0;
ready = FALSE;
while (gst_bin_iterate (GST_BIN (context->pipeline)) && !ready) {
count++;
if (count > 10) break;
}
print_metadata (context->metadata);
print_format (context->caps);
print_lbs_info (context, stream);
g_print ("\n");
return TRUE;
}
static void
collect_stream_properties (struct probe_context *context)
{
const GstFormat *formats;
ready = FALSE;
while (gst_bin_iterate (GST_BIN (context->pipeline)) && !ready);
g_print ("stream info:\n");
context->total_ls = -1;
/* report info in all supported formats */
formats = gst_pad_get_formats (context->pad);
while (*formats) {
const GstFormatDefinition *definition;
gint64 value;
gboolean res;
GstFormat format;
format = *formats;
res = gst_pad_query (context->pad, GST_PAD_QUERY_TOTAL,
&format, &value);
definition = gst_format_get_details (*formats);
if (res) {
if (format == GST_FORMAT_TIME) {
value /= (GST_SECOND/100);
g_print (" total %s: %lld:%02lld.%02lld\n", definition->nick,
value/6000, (value/100)%60, (value%100));
}
else {
if (format == context->ls_format)
context->total_ls = value;
g_print (" total %s: %lld\n", definition->nick, value);
}
}
formats++;
}
if (context->total_ls == -1) {
g_warning (" could not get number of logical streams");
}
g_print ("\n");
}
int
main (int argc, char **argv)
{
GstElement *pipeline;
GstElement *filesrc;
GstElement *vorbisfile;
GstPad *pad;
GstFormat logical_stream_format;
struct probe_context *context;
gint stream;
gst_init (&argc, &argv);
if (argc < 2) {
g_print ("usage: %s <oggfile>\n", argv[0]);
return (-1);
}
pipeline = gst_pipeline_new ("pipeline");
filesrc = gst_element_factory_make ("filesrc", "filesrc");
g_assert (filesrc);
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
vorbisfile = gst_element_factory_make ("vorbisfile", "vorbisfile");
g_assert (vorbisfile);
gst_bin_add (GST_BIN (pipeline), filesrc);
gst_bin_add (GST_BIN (pipeline), vorbisfile);
gst_element_connect_pads (filesrc, "src", vorbisfile, "sink");
pad = gst_element_get_pad (vorbisfile, "src");
g_assert (pad);
logical_stream_format = gst_format_get_by_nick ("logical_stream");
g_assert (logical_stream_format != 0);
context = g_new0 (struct probe_context, 1);
context->pipeline = pipeline;
context->element = vorbisfile;
context->pad = pad;
context->ls_format = logical_stream_format;
g_signal_connect (G_OBJECT (pipeline), "deep_notify",
G_CALLBACK (deep_notify), context);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* at this point we can inspect the stream */
collect_stream_properties (context);
/* loop over all logical streams to get info */
stream = 0;
while (stream < context->total_ls) {
collect_logical_stream_properties (context, stream);
stream++;
}
/* stop probe */
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_buffer_print_stats();
gst_event_print_stats();
return 0;
}
examples = seek spider_seek cdplayer cdparanoia
examples = seek spider_seek cdplayer cdparanoia vorbisfile
noinst_PROGRAMS = $(examples)
# we have nothing but apps here, we can do this safely
LIBS = $(GST_LIBS) $(GTK_LIBS) $(FT2_LIBS)
AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) $(FT2_CFLAGS)
AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
#include <stdlib.h>
#include <gst/gst.h>
#include <string.h>
static gboolean ready = FALSE;
struct probe_context {
GstElement *pipeline;
GstElement *element;
GstPad *pad;
GstFormat ls_format;
gint total_ls;
GstCaps *metadata;
GstCaps *caps;
};
static void
print_metadata (GstCaps *caps)
{
g_print (" metadata:\n");
if (!caps || caps->properties == NULL) {
g_print (" none\n");
return;
}
if (!strcmp (gst_caps_get_mime (caps), "application/x-gst-metadata")) {
GstProps *props = caps->properties;
GList *walk = props->properties;
while (walk) {
GstPropsEntry *entry = (GstPropsEntry *) walk->data;
const gchar *name;
const gchar *str_val;
gint int_val;
GstPropsType type;
name = gst_props_entry_get_name (entry);
type = gst_props_entry_get_type (entry);
switch (type) {
case GST_PROPS_STRING_TYPE:
gst_props_entry_get_string (entry, &str_val);
g_print (" %s='%s'\n", name, str_val);
break;
case GST_PROPS_INT_TYPE:
gst_props_entry_get_int (entry, &int_val);
g_print (" %s=%d\n", name, int_val);
break;
default:
break;
}
walk = g_list_next (walk);
}
}
else {
g_print (" unkown metadata type\n");
}
}
static void
print_format (GstCaps *caps)
{
g_print (" format:\n");
if (!caps || caps->properties == NULL) {
g_print (" unkown\n");
return;
}
if (!strcmp (gst_caps_get_mime (caps), "audio/raw")) {
gint channels;
gint rate;
gst_caps_get_int (caps, "channels", &channels);
gst_caps_get_int (caps, "rate", &rate);
g_print (" channels: %d\n", channels);
g_print (" rate: %d\n", rate);
}
else {
g_print (" unkown format\n");
}
}
static void
print_lbs_info (struct probe_context *context, gint stream)
{
const GstFormat *formats;
g_print (" stream info:\n");
/* report info in all supported formats */
formats = gst_pad_get_formats (context->pad);
while (*formats) {
const GstFormatDefinition *definition;
gint64 value_start, value_end;
gboolean res;
GstFormat format;
if (*formats == context->ls_format) {
formats++;
continue;
}
definition = gst_format_get_details (*formats);
/* get start and end position of this stream */
format = *formats;
res = gst_pad_convert (context->pad,
context->ls_format, stream,
&format, &value_start);
res &= gst_pad_convert (context->pad,
context->ls_format, stream + 1,
&format, &value_end);
if (res) {
/* substract to get the length */
value_end -= value_start;
if (*formats == GST_FORMAT_TIME) {
value_end /= (GST_SECOND/100);
g_print (" %s: %lld:%02lld.%02lld\n", definition->nick,
value_end/6000, (value_end/100)%60, (value_end%100));
}
else {
g_print (" %s: %lld\n", definition->nick, value_end);
}
}
else
g_print (" could not get logical stream %s\n", definition->nick);
formats++;
}
}
static void
deep_notify (GObject *object, GstObject *origin,
GParamSpec *pspec, gpointer data)
{
struct probe_context *context = (struct probe_context *) data;
GValue value = { 0, };
if (!strcmp (pspec->name, "metadata")) {
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
context->metadata = g_value_peek_pointer (&value);
}
else if (!strcmp (pspec->name, "caps")) {
if (GST_IS_PAD (origin) && GST_PAD (origin) == context->pad) {
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
context->caps = g_value_peek_pointer (&value);
ready = TRUE;
}
}
}
static gboolean
collect_logical_stream_properties (struct probe_context *context, gint stream)
{
GstEvent *event;
gboolean res;
gint count;
g_print ("info for logical stream %d:\n", stream);
/* seek to stream */
event = gst_event_new_seek (context->ls_format |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH,
stream);
res = gst_pad_send_event (context->pad, event);
if (!res) {
g_warning ("seek to logical track failed");
return FALSE;
}
/* run the pipeline to get the info */
count = 0;
ready = FALSE;
while (gst_bin_iterate (GST_BIN (context->pipeline)) && !ready) {
count++;
if (count > 10) break;
}
print_metadata (context->metadata);
print_format (context->caps);
print_lbs_info (context, stream);
g_print ("\n");
return TRUE;
}
static void
collect_stream_properties (struct probe_context *context)
{
const GstFormat *formats;
ready = FALSE;
while (gst_bin_iterate (GST_BIN (context->pipeline)) && !ready);
g_print ("stream info:\n");
context->total_ls = -1;
/* report info in all supported formats */
formats = gst_pad_get_formats (context->pad);
while (*formats) {
const GstFormatDefinition *definition;
gint64 value;
gboolean res;
GstFormat format;
format = *formats;
res = gst_pad_query (context->pad, GST_PAD_QUERY_TOTAL,
&format, &value);
definition = gst_format_get_details (*formats);
if (res) {
if (format == GST_FORMAT_TIME) {
value /= (GST_SECOND/100);
g_print (" total %s: %lld:%02lld.%02lld\n", definition->nick,
value/6000, (value/100)%60, (value%100));
}
else {
if (format == context->ls_format)
context->total_ls = value;
g_print (" total %s: %lld\n", definition->nick, value);
}
}
formats++;
}
if (context->total_ls == -1) {
g_warning (" could not get number of logical streams");
}
g_print ("\n");
}
int
main (int argc, char **argv)
{
GstElement *pipeline;
GstElement *filesrc;
GstElement *vorbisfile;
GstPad *pad;
GstFormat logical_stream_format;
struct probe_context *context;
gint stream;
gst_init (&argc, &argv);
if (argc < 2) {
g_print ("usage: %s <oggfile>\n", argv[0]);
return (-1);
}
pipeline = gst_pipeline_new ("pipeline");
filesrc = gst_element_factory_make ("filesrc", "filesrc");
g_assert (filesrc);
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
vorbisfile = gst_element_factory_make ("vorbisfile", "vorbisfile");
g_assert (vorbisfile);
gst_bin_add (GST_BIN (pipeline), filesrc);
gst_bin_add (GST_BIN (pipeline), vorbisfile);
gst_element_connect_pads (filesrc, "src", vorbisfile, "sink");
pad = gst_element_get_pad (vorbisfile, "src");
g_assert (pad);
logical_stream_format = gst_format_get_by_nick ("logical_stream");
g_assert (logical_stream_format != 0);
context = g_new0 (struct probe_context, 1);
context->pipeline = pipeline;
context->element = vorbisfile;
context->pad = pad;
context->ls_format = logical_stream_format;