gstreamer/tools/gst-discoverer.c
Vineeth TM b632b206e1 tools: discoverer: When info is NULL just print error and return
In case discover_uri returns NULL info, passing the info to discoverer APIs
result in critical assertion errors. Hence instead of passing NULL info along,
print the error and return.

https://bugzilla.gnome.org/show_bug.cgi?id=753701
2015-08-19 10:20:58 +03:00

614 lines
16 KiB
C

/* GStreamer
* Copyright (C) 2009 Edward Hervey <edward.hervey@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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <locale.h>
#include <stdlib.h>
#include <glib.h>
#include <gst/gst.h>
#include <gst/pbutils/pbutils.h>
#define MAX_INDENT 40
/* *INDENT-OFF* */
static void my_g_string_append_printf (GString * str, int depth, const gchar * format, ...) G_GNUC_PRINTF (3, 4);
/* *INDENT-ON* */
static gboolean async = FALSE;
static gboolean show_toc = FALSE;
static gboolean verbose = FALSE;
typedef struct
{
GstDiscoverer *dc;
int argc;
char **argv;
} PrivStruct;
static void
my_g_string_append_printf (GString * str, int depth, const gchar * format, ...)
{
va_list args;
while (depth-- > 0) {
g_string_append (str, " ");
}
va_start (args, format);
g_string_append_vprintf (str, format, args);
va_end (args);
}
static void
gst_stream_information_to_string (GstDiscovererStreamInfo * info, GString * s,
guint depth)
{
gchar *tmp;
GstCaps *caps;
const GstStructure *misc;
my_g_string_append_printf (s, depth, "Codec:\n");
caps = gst_discoverer_stream_info_get_caps (info);
tmp = gst_caps_to_string (caps);
gst_caps_unref (caps);
my_g_string_append_printf (s, depth, " %s\n", tmp);
g_free (tmp);
my_g_string_append_printf (s, depth, "Additional info:\n");
if ((misc = gst_discoverer_stream_info_get_misc (info))) {
tmp = gst_structure_to_string (misc);
my_g_string_append_printf (s, depth, " %s\n", tmp);
g_free (tmp);
} else {
my_g_string_append_printf (s, depth, " None\n");
}
my_g_string_append_printf (s, depth, "Stream ID: %s\n",
gst_discoverer_stream_info_get_stream_id (info));
}
static void
print_tag_foreach (const GstTagList * tags, const gchar * tag,
gpointer user_data)
{
GValue val = { 0, };
gchar *str;
guint depth = GPOINTER_TO_UINT (user_data);
if (!gst_tag_list_copy_value (&val, tags, tag))
return;
if (G_VALUE_HOLDS_STRING (&val)) {
str = g_value_dup_string (&val);
} else if (G_VALUE_TYPE (&val) == GST_TYPE_SAMPLE) {
GstSample *sample = gst_value_get_sample (&val);
GstBuffer *img = gst_sample_get_buffer (sample);
GstCaps *caps = gst_sample_get_caps (sample);
if (img) {
if (caps) {
gchar *caps_str;
caps_str = gst_caps_to_string (caps);
str = g_strdup_printf ("buffer of %" G_GSIZE_FORMAT " bytes, "
"type: %s", gst_buffer_get_size (img), caps_str);
g_free (caps_str);
} else {
str = g_strdup_printf ("buffer of %" G_GSIZE_FORMAT " bytes",
gst_buffer_get_size (img));
}
} else {
str = g_strdup ("NULL buffer");
}
} else {
str = gst_value_serialize (&val);
}
g_print ("%*s%s: %s\n", 2 * depth, " ", gst_tag_get_nick (tag), str);
g_free (str);
g_value_unset (&val);
}
static void
print_tags_topology (guint depth, const GstTagList * tags)
{
g_print ("%*sTags:\n", 2 * depth, " ");
if (tags) {
gst_tag_list_foreach (tags, print_tag_foreach,
GUINT_TO_POINTER (depth + 1));
} else {
g_print ("%*sNone\n", 2 * (depth + 1), " ");
}
if (verbose)
g_print ("%*s\n", 2 * depth, " ");
}
static gchar *
gst_stream_audio_information_to_string (GstDiscovererStreamInfo * info,
guint depth)
{
GstDiscovererAudioInfo *audio_info;
GString *s;
const gchar *ctmp;
int len = 400;
const GstTagList *tags;
g_return_val_if_fail (info != NULL, NULL);
s = g_string_sized_new (len);
gst_stream_information_to_string (info, s, depth);
audio_info = (GstDiscovererAudioInfo *) info;
ctmp = gst_discoverer_audio_info_get_language (audio_info);
my_g_string_append_printf (s, depth, "Language: %s\n",
ctmp ? ctmp : "<unknown>");
my_g_string_append_printf (s, depth, "Channels: %u\n",
gst_discoverer_audio_info_get_channels (audio_info));
my_g_string_append_printf (s, depth, "Sample rate: %u\n",
gst_discoverer_audio_info_get_sample_rate (audio_info));
my_g_string_append_printf (s, depth, "Depth: %u\n",
gst_discoverer_audio_info_get_depth (audio_info));
my_g_string_append_printf (s, depth, "Bitrate: %u\n",
gst_discoverer_audio_info_get_bitrate (audio_info));
my_g_string_append_printf (s, depth, "Max bitrate: %u\n",
gst_discoverer_audio_info_get_max_bitrate (audio_info));
tags = gst_discoverer_stream_info_get_tags (info);
print_tags_topology (depth, tags);
return g_string_free (s, FALSE);
}
static gchar *
gst_stream_video_information_to_string (GstDiscovererStreamInfo * info,
guint depth)
{
GstDiscovererVideoInfo *video_info;
GString *s;
int len = 500;
const GstTagList *tags;
g_return_val_if_fail (info != NULL, NULL);
s = g_string_sized_new (len);
gst_stream_information_to_string (info, s, depth);
video_info = (GstDiscovererVideoInfo *) info;
my_g_string_append_printf (s, depth, "Width: %u\n",
gst_discoverer_video_info_get_width (video_info));
my_g_string_append_printf (s, depth, "Height: %u\n",
gst_discoverer_video_info_get_height (video_info));
my_g_string_append_printf (s, depth, "Depth: %u\n",
gst_discoverer_video_info_get_depth (video_info));
my_g_string_append_printf (s, depth, "Frame rate: %u/%u\n",
gst_discoverer_video_info_get_framerate_num (video_info),
gst_discoverer_video_info_get_framerate_denom (video_info));
my_g_string_append_printf (s, depth, "Pixel aspect ratio: %u/%u\n",
gst_discoverer_video_info_get_par_num (video_info),
gst_discoverer_video_info_get_par_denom (video_info));
my_g_string_append_printf (s, depth, "Interlaced: %s\n",
gst_discoverer_video_info_is_interlaced (video_info) ? "true" : "false");
my_g_string_append_printf (s, depth, "Bitrate: %u\n",
gst_discoverer_video_info_get_bitrate (video_info));
my_g_string_append_printf (s, depth, "Max bitrate: %u\n",
gst_discoverer_video_info_get_max_bitrate (video_info));
tags = gst_discoverer_stream_info_get_tags (info);
print_tags_topology (depth, tags);
return g_string_free (s, FALSE);
}
static gchar *
gst_stream_subtitle_information_to_string (GstDiscovererStreamInfo * info,
guint depth)
{
GstDiscovererSubtitleInfo *subtitle_info;
GString *s;
const gchar *ctmp;
int len = 400;
const GstTagList *tags;
g_return_val_if_fail (info != NULL, NULL);
s = g_string_sized_new (len);
gst_stream_information_to_string (info, s, depth);
subtitle_info = (GstDiscovererSubtitleInfo *) info;
ctmp = gst_discoverer_subtitle_info_get_language (subtitle_info);
my_g_string_append_printf (s, depth, "Language: %s\n",
ctmp ? ctmp : "<unknown>");
tags = gst_discoverer_stream_info_get_tags (info);
print_tags_topology (depth, tags);
return g_string_free (s, FALSE);
}
static void
print_stream_info (GstDiscovererStreamInfo * info, void *depth)
{
gchar *desc = NULL;
GstCaps *caps;
caps = gst_discoverer_stream_info_get_caps (info);
if (caps) {
if (gst_caps_is_fixed (caps) && !verbose)
desc = gst_pb_utils_get_codec_description (caps);
else
desc = gst_caps_to_string (caps);
gst_caps_unref (caps);
}
g_print ("%*s%s: %s\n", 2 * GPOINTER_TO_INT (depth), " ",
gst_discoverer_stream_info_get_stream_type_nick (info), desc);
if (desc) {
g_free (desc);
desc = NULL;
}
if (verbose) {
if (GST_IS_DISCOVERER_AUDIO_INFO (info))
desc =
gst_stream_audio_information_to_string (info,
GPOINTER_TO_INT (depth) + 1);
else if (GST_IS_DISCOVERER_VIDEO_INFO (info))
desc =
gst_stream_video_information_to_string (info,
GPOINTER_TO_INT (depth) + 1);
else if (GST_IS_DISCOVERER_SUBTITLE_INFO (info))
desc =
gst_stream_subtitle_information_to_string (info,
GPOINTER_TO_INT (depth) + 1);
if (desc) {
g_print ("%s", desc);
g_free (desc);
}
}
}
static void
print_topology (GstDiscovererStreamInfo * info, guint depth)
{
GstDiscovererStreamInfo *next;
if (!info)
return;
print_stream_info (info, GINT_TO_POINTER (depth));
next = gst_discoverer_stream_info_get_next (info);
if (next) {
print_topology (next, depth + 1);
gst_discoverer_stream_info_unref (next);
} else if (GST_IS_DISCOVERER_CONTAINER_INFO (info)) {
GList *tmp, *streams;
streams =
gst_discoverer_container_info_get_streams (GST_DISCOVERER_CONTAINER_INFO
(info));
for (tmp = streams; tmp; tmp = tmp->next) {
GstDiscovererStreamInfo *tmpinf = (GstDiscovererStreamInfo *) tmp->data;
print_topology (tmpinf, depth + 1);
}
gst_discoverer_stream_info_list_free (streams);
}
}
static void
print_toc_entry (gpointer data, gpointer user_data)
{
GstTocEntry *entry = (GstTocEntry *) data;
guint depth = GPOINTER_TO_UINT (user_data);
guint indent = MIN (GPOINTER_TO_UINT (user_data), MAX_INDENT);
GstTagList *tags;
GList *subentries;
gint64 start, stop;
gst_toc_entry_get_start_stop_times (entry, &start, &stop);
g_print ("%*s%s: start: %" GST_TIME_FORMAT " stop: %" GST_TIME_FORMAT "\n",
depth, " ",
gst_toc_entry_type_get_nick (gst_toc_entry_get_entry_type (entry)),
GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
indent += 2;
/* print tags */
tags = gst_toc_entry_get_tags (entry);
if (tags) {
g_print ("%*sTags:\n", 2 * depth, " ");
gst_tag_list_foreach (tags, print_tag_foreach, GUINT_TO_POINTER (indent));
}
/* loop over sub-toc entries */
subentries = gst_toc_entry_get_sub_entries (entry);
g_list_foreach (subentries, print_toc_entry, GUINT_TO_POINTER (indent));
}
static void
print_properties (GstDiscovererInfo * info, gint tab)
{
const GstTagList *tags;
const GstToc *toc;
g_print ("%*sDuration: %" GST_TIME_FORMAT "\n", tab + 1, " ",
GST_TIME_ARGS (gst_discoverer_info_get_duration (info)));
g_print ("%*sSeekable: %s\n", tab + 1, " ",
(gst_discoverer_info_get_seekable (info) ? "yes" : "no"));
if ((tags = gst_discoverer_info_get_tags (info))) {
g_print ("%*sTags: \n", tab + 1, " ");
gst_tag_list_foreach (tags, print_tag_foreach, GUINT_TO_POINTER (tab + 2));
}
if (show_toc && (toc = gst_discoverer_info_get_toc (info))) {
GList *entries;
g_print ("%*sTOC: \n", tab + 1, " ");
entries = gst_toc_get_entries (toc);
g_list_foreach (entries, print_toc_entry, GUINT_TO_POINTER (tab + 5));
}
}
static void
print_info (GstDiscovererInfo * info, GError * err)
{
GstDiscovererResult result;
GstDiscovererStreamInfo *sinfo;
if (!info) {
g_print ("Could not discover URI\n");
g_print (" %s\n", err->message);
return;
}
result = gst_discoverer_info_get_result (info);
g_print ("Done discovering %s\n", gst_discoverer_info_get_uri (info));
switch (result) {
case GST_DISCOVERER_OK:
{
break;
}
case GST_DISCOVERER_URI_INVALID:
{
g_print ("URI is not valid\n");
break;
}
case GST_DISCOVERER_ERROR:
{
g_print ("An error was encountered while discovering the file\n");
g_print (" %s\n", err->message);
break;
}
case GST_DISCOVERER_TIMEOUT:
{
g_print ("Analyzing URI timed out\n");
break;
}
case GST_DISCOVERER_BUSY:
{
g_print ("Discoverer was busy\n");
break;
}
case GST_DISCOVERER_MISSING_PLUGINS:
{
g_print ("Missing plugins\n");
if (verbose) {
gint i = 0;
const gchar **installer_details =
gst_discoverer_info_get_missing_elements_installer_details (info);
while (installer_details[i]) {
g_print (" (%s)\n", installer_details[i]);
i++;
}
}
break;
}
}
if ((sinfo = gst_discoverer_info_get_stream_info (info))) {
g_print ("\nTopology:\n");
print_topology (sinfo, 1);
g_print ("\nProperties:\n");
print_properties (info, 1);
gst_discoverer_stream_info_unref (sinfo);
}
g_print ("\n");
}
static void
process_file (GstDiscoverer * dc, const gchar * filename)
{
GError *err = NULL;
GDir *dir;
gchar *uri, *path;
GstDiscovererInfo *info;
if (!gst_uri_is_valid (filename)) {
/* Recurse into directories */
if ((dir = g_dir_open (filename, 0, NULL))) {
const gchar *entry;
while ((entry = g_dir_read_name (dir))) {
gchar *path;
path = g_strconcat (filename, G_DIR_SEPARATOR_S, entry, NULL);
process_file (dc, path);
g_free (path);
}
g_dir_close (dir);
return;
}
if (!g_path_is_absolute (filename)) {
gchar *cur_dir;
cur_dir = g_get_current_dir ();
path = g_build_filename (cur_dir, filename, NULL);
g_free (cur_dir);
} else {
path = g_strdup (filename);
}
uri = g_filename_to_uri (path, NULL, &err);
g_free (path);
path = NULL;
if (err) {
g_warning ("Couldn't convert filename to URI: %s\n", err->message);
g_error_free (err);
return;
}
} else {
uri = g_strdup (filename);
}
if (!async) {
g_print ("Analyzing %s\n", uri);
info = gst_discoverer_discover_uri (dc, uri, &err);
print_info (info, err);
if (err)
g_error_free (err);
gst_discoverer_info_unref (info);
} else {
gst_discoverer_discover_uri_async (dc, uri);
}
g_free (uri);
}
static void
_new_discovered_uri (GstDiscoverer * dc, GstDiscovererInfo * info, GError * err)
{
print_info (info, err);
}
static gboolean
_run_async (PrivStruct * ps)
{
gint i;
for (i = 1; i < ps->argc; i++)
process_file (ps->dc, ps->argv[i]);
return FALSE;
}
static void
_discoverer_finished (GstDiscoverer * dc, GMainLoop * ml)
{
g_main_loop_quit (ml);
}
int
main (int argc, char **argv)
{
GError *err = NULL;
GstDiscoverer *dc;
gint timeout = 10;
GOptionEntry options[] = {
{"async", 'a', 0, G_OPTION_ARG_NONE, &async,
"Run asynchronously", NULL},
{"timeout", 't', 0, G_OPTION_ARG_INT, &timeout,
"Specify timeout (in seconds, default 10)", "T"},
/* {"elem", 'e', 0, G_OPTION_ARG_NONE, &elem_seek, */
/* "Seek on elements instead of pads", NULL}, */
{"toc", 'c', 0, G_OPTION_ARG_NONE, &show_toc,
"Output TOC (chapters and editions)", NULL},
{"verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose,
"Verbose properties", NULL},
{NULL}
};
GOptionContext *ctx;
setlocale (LC_ALL, "");
ctx =
g_option_context_new
("- discover files synchronously with GstDiscoverer");
g_option_context_add_main_entries (ctx, options, NULL);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_print ("Error initializing: %s\n", err->message);
g_option_context_free (ctx);
g_clear_error (&err);
exit (1);
}
g_option_context_free (ctx);
if (argc < 2) {
g_print ("usage: %s <uris>\n", argv[0]);
exit (-1);
}
dc = gst_discoverer_new (timeout * GST_SECOND, &err);
if (G_UNLIKELY (dc == NULL)) {
g_print ("Error initializing: %s\n", err->message);
g_clear_error (&err);
exit (1);
}
if (!async) {
gint i;
for (i = 1; i < argc; i++)
process_file (dc, argv[i]);
} else {
PrivStruct *ps = g_new0 (PrivStruct, 1);
GMainLoop *ml = g_main_loop_new (NULL, FALSE);
ps->dc = dc;
ps->argc = argc;
ps->argv = argv;
/* adding uris will be started when the mainloop runs */
g_idle_add ((GSourceFunc) _run_async, ps);
/* connect signals */
g_signal_connect (dc, "discovered", G_CALLBACK (_new_discovered_uri), NULL);
g_signal_connect (dc, "finished", G_CALLBACK (_discoverer_finished), ml);
gst_discoverer_start (dc);
/* run mainloop */
g_main_loop_run (ml);
gst_discoverer_stop (dc);
g_free (ps);
g_main_loop_unref (ml);
}
g_object_unref (dc);
return 0;
}