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Original commit message from CVS: * gst-libs/gst/tag/Makefile.am: * gst-libs/gst/tag/gstvorbistag.c: (gst_tag_list_to_vorbiscomment_buffer): Remove obsolete vorbistag element and debug category. * gst/playback/gstplaybasebin.c: (check_queue): Don't divide by 0 when queue-threshold is 0. * sys/ximage/ximagesink.c: (gst_ximagesink_set_property): Don't modify an existing pixel-aspect-ratio if we fail to read a new one.
433 lines
12 KiB
C
433 lines
12 KiB
C
/* GStreamer
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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*
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* gstvorbistagsetter.c: plugin for reading / modifying vorbis tags
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gsttagsetter.h>
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#include "gsttageditingprivate.h"
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#include <stdlib.h>
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#include <string.h>
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static GstTagEntryMatch tag_matches[] = {
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{GST_TAG_TITLE, "TITLE"},
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{GST_TAG_VERSION, "VERSION"},
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{GST_TAG_ALBUM, "ALBUM"},
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{GST_TAG_TRACK_NUMBER, "TRACKNUMBER"},
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{GST_TAG_ALBUM_VOLUME_NUMBER, "DISCNUMBER"},
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{GST_TAG_TRACK_COUNT, "TRACKTOTAL"},
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{GST_TAG_ALBUM_VOLUME_COUNT, "DISCTOTAL"},
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{GST_TAG_ARTIST, "ARTIST"},
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{GST_TAG_PERFORMER, "PERFORMER"},
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{GST_TAG_COPYRIGHT, "COPYRIGHT"},
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{GST_TAG_LICENSE, "LICENSE"},
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{GST_TAG_ORGANIZATION, "ORGANIZATION"},
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{GST_TAG_DESCRIPTION, "DESCRIPTION"},
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{GST_TAG_GENRE, "GENRE"},
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{GST_TAG_DATE, "DATE"},
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{GST_TAG_CONTACT, "CONTACT"},
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{GST_TAG_ISRC, "ISRC"},
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{GST_TAG_COMMENT, "COMMENT"},
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{GST_TAG_TRACK_GAIN, "REPLAYGAIN_TRACK_GAIN"},
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{GST_TAG_TRACK_PEAK, "REPLAYGAIN_TRACK_PEAK"},
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{GST_TAG_ALBUM_GAIN, "REPLAYGAIN_ALBUM_GAIN"},
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{GST_TAG_ALBUM_PEAK, "REPLAYGAIN_ALBUM_PEAK"},
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{NULL, NULL}
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};
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/**
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* gst_tag_from_vorbis_tag:
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* @vorbis_tag: vorbiscomment tag to convert to GStreamer tag
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*
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* Looks up the GStreamer tag for a vorbiscommment tag.
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*
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* Returns: The corresponding GStreamer tag or NULL if none exists.
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*/
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G_CONST_RETURN gchar *
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gst_tag_from_vorbis_tag (const gchar * vorbis_tag)
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{
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int i = 0;
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gchar *real_vorbis_tag;
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g_return_val_if_fail (vorbis_tag != NULL, NULL);
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real_vorbis_tag = g_ascii_strup (vorbis_tag, -1);
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while (tag_matches[i].gstreamer_tag != NULL) {
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if (strcmp (real_vorbis_tag, tag_matches[i].original_tag) == 0) {
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break;
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}
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i++;
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}
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g_free (real_vorbis_tag);
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return tag_matches[i].gstreamer_tag;
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}
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/**
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* gst_tag_to_vorbis_tag:
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* @gst_tag: GStreamer tag to convert to vorbiscomment tag
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*
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* Looks up the vorbiscommment tag for a GStreamer tag.
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*
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* Returns: The corresponding vorbiscommment tag or NULL if none exists.
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*/
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G_CONST_RETURN gchar *
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gst_tag_to_vorbis_tag (const gchar * gst_tag)
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{
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int i = 0;
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g_return_val_if_fail (gst_tag != NULL, NULL);
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while (tag_matches[i].gstreamer_tag != NULL) {
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if (strcmp (gst_tag, tag_matches[i].gstreamer_tag) == 0) {
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return tag_matches[i].original_tag;
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}
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i++;
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}
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return NULL;
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}
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void
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gst_vorbis_tag_add (GstTagList * list, const gchar * tag, const gchar * value)
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{
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const gchar *gst_tag = gst_tag_from_vorbis_tag (tag);
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GType tag_type;
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if (gst_tag == NULL)
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return;
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tag_type = gst_tag_get_type (gst_tag);
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switch (tag_type) {
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case G_TYPE_UINT:{
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guint tmp;
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gchar *check;
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gboolean is_track_number_tag;
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gboolean is_disc_number_tag;
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is_track_number_tag = (strcmp (gst_tag, GST_TAG_TRACK_NUMBER) == 0);
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is_disc_number_tag = (strcmp (gst_tag, GST_TAG_ALBUM_VOLUME_NUMBER) == 0);
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tmp = strtoul (value, &check, 10);
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if (*check == '/' && (is_track_number_tag || is_disc_number_tag)) {
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guint count;
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check++;
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count = strtoul (check, &check, 10);
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if (*check != '\0' || count == 0)
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break;
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if (is_track_number_tag) {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_TRACK_COUNT,
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count, NULL);
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} else {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND,
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GST_TAG_ALBUM_VOLUME_COUNT, count, NULL);
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}
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}
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if (*check == '\0') {
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, tmp, NULL);
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}
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break;
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}
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case G_TYPE_STRING:{
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gchar *valid;
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if (!g_utf8_validate (value, -1, (const gchar **) &valid)) {
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valid = g_strndup (value, valid - value);
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GST_DEBUG ("Invalid vorbis comment tag, truncated it to %s\n", valid);
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} else {
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valid = g_strdup (value);
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}
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, valid, NULL);
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g_free (valid);
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break;
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}
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case G_TYPE_DOUBLE:{
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, g_strtod (value,
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NULL), NULL);
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break;
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}
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default:{
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if (tag_type == GST_TYPE_DATE) {
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guint y, d = 1, m = 1;
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gchar *check = (gchar *) value;
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y = strtoul (check, &check, 10);
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if (*check == '-') {
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check++;
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m = strtoul (check, &check, 10);
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if (*check == '-') {
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check++;
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d = strtoul (check, &check, 10);
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}
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}
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if (*check == '\0' && y != 0 && g_date_valid_dmy (d, m, y)) {
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GDate *date;
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date = g_date_new_dmy (d, m, y);
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gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, date, NULL);
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g_date_free (date);
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} else {
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GST_DEBUG ("skipping invalid date '%s' (%u,%u,%u)", value, y, m, d);
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}
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} else {
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GST_WARNING ("Unhandled tag of type '%s' (%d)",
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g_type_name (tag_type), (gint) tag_type);
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}
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break;
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}
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}
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}
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/**
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* gst_tag_list_from_vorbiscomment_buffer:
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* @buffer: buffer to convert
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* @id_data: identification data at start of stream
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* @id_data_length: length of identification data
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* @ vendor_string: pointer to a string that should take the vendor string of this
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* vorbis comment or NULL if you don't need it.
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*
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* Creates a new tag list that contains the information parsed out of a
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* vorbiscomment packet.
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*
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* Returns: A new #GstTagList with all tags that could be extracted from the
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* given vorbiscomment buffer or NULL on error.
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*/
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GstTagList *
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gst_tag_list_from_vorbiscomment_buffer (const GstBuffer * buffer,
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const guint8 * id_data, const guint id_data_length, gchar ** vendor_string)
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{
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#define ADVANCE(x) G_STMT_START{ \
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data += x; \
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size -= x; \
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if (size < 4) goto error; \
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cur_size = GST_READ_UINT32_LE (data); \
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data += 4; \
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size -= 4; \
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if (cur_size > size) goto error; \
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cur = (gchar*)data; \
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}G_STMT_END
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gchar *cur, *value;
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guint cur_size;
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guint iterations;
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guint8 *data;
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guint size;
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GstTagList *list;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
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g_return_val_if_fail (id_data != NULL, NULL);
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g_return_val_if_fail (id_data_length > 0, NULL);
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data = GST_BUFFER_DATA (buffer);
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size = GST_BUFFER_SIZE (buffer);
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list = gst_tag_list_new ();
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if (size < 11)
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goto error;
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if (memcmp (data, id_data, id_data_length) != 0)
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goto error;
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ADVANCE (id_data_length);
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if (vendor_string)
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*vendor_string = g_strndup (cur, cur_size);
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ADVANCE (cur_size);
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iterations = cur_size;
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cur_size = 0;
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while (iterations) {
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ADVANCE (cur_size);
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iterations--;
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cur = g_strndup (cur, cur_size);
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value = strchr (cur, '=');
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if (value == NULL) {
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g_free (cur);
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continue;
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}
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*value = '\0';
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value++;
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if (!g_utf8_validate (value, -1, NULL)) {
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g_free (cur);
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continue;
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}
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gst_vorbis_tag_add (list, cur, value);
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g_free (cur);
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}
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return list;
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error:
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gst_tag_list_free (list);
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return NULL;
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#undef ADVANCE
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}
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typedef struct
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{
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guint count;
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guint data_count;
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GList *entries;
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}
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MyForEach;
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GList *
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gst_tag_to_vorbis_comments (const GstTagList * list, const gchar * tag)
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{
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GList *l = NULL;
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guint i;
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const gchar *vorbis_tag = gst_tag_to_vorbis_tag (tag);
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if (!vorbis_tag)
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return NULL;
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for (i = 0; i < gst_tag_list_get_tag_size (list, tag); i++) {
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GType tag_type = gst_tag_get_type (tag);
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gchar *result = NULL;
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switch (tag_type) {
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case G_TYPE_UINT:{
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guint u;
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if (!gst_tag_list_get_uint_index (list, tag, i, &u))
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g_return_val_if_reached (NULL);
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result = g_strdup_printf ("%s=%u", vorbis_tag, u);
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break;
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}
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case G_TYPE_STRING:{
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gchar *str;
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if (!gst_tag_list_get_string_index (list, tag, i, &str))
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g_return_val_if_reached (NULL);
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result = g_strdup_printf ("%s=%s", vorbis_tag, str);
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g_free (str);
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break;
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}
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case G_TYPE_DOUBLE:{
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gdouble value;
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if (!gst_tag_list_get_double_index (list, tag, i, &value))
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g_return_val_if_reached (NULL);
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/* FIXME: what about locale-specific floating point separators? */
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result = g_strdup_printf ("%s=%f", vorbis_tag, value);
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break;
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}
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default:{
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if (tag_type == GST_TYPE_DATE) {
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GDate *date;
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if (gst_tag_list_get_date_index (list, tag, i, &date)) {
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/* vorbis suggests using ISO date formats */
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result =
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g_strdup_printf ("%s=%04d-%02d-%02d", vorbis_tag,
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(gint) g_date_get_year (date), (gint) g_date_get_month (date),
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(gint) g_date_get_day (date));
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g_date_free (date);
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}
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} else {
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GST_DEBUG ("Couldn't write tag %s", tag);
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continue;
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}
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break;
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}
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}
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l = g_list_prepend (l, result);
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}
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return g_list_reverse (l);
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}
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static void
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write_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
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{
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MyForEach *data = (MyForEach *) user_data;
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GList *comments;
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GList *it;
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comments = gst_tag_to_vorbis_comments (list, tag);
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for (it = comments; it != NULL; it = it->next) {
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gchar *result = it->data;
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data->count++;
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data->data_count += strlen (result);
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data->entries = g_list_prepend (data->entries, result);
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}
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}
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/**
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* gst_tag_list_to_vorbiscomment_buffer:
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* @buffer: tag list to convert
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* @id_data: identification data at start of stream
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* @id_data_length: length of identification data
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* @ vendor_string: string that describes the vendor string or NULL
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*
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* Creates a new vorbiscomment buffer from a tag list.
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*
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* Returns: A new #GstBuffer containing a vorbiscomment buffer with all tags that
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* could be converted from the given tag list.
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*/
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GstBuffer *
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gst_tag_list_to_vorbiscomment_buffer (const GstTagList * list,
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const guint8 * id_data, const guint id_data_length,
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const gchar * vendor_string)
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{
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GstBuffer *buffer;
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guint8 *data;
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guint i;
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GList *l;
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MyForEach my_data = { 0, 0, NULL };
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guint vendor_len;
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int required_size;
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g_return_val_if_fail (GST_IS_TAG_LIST (list), NULL);
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g_return_val_if_fail (id_data != NULL, NULL);
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g_return_val_if_fail (id_data_length > 0, NULL);
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if (vendor_string == NULL)
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vendor_string = "GStreamer encoded vorbiscomment";
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vendor_len = strlen (vendor_string);
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required_size = id_data_length + 4 + vendor_len + 4 + 1;
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gst_tag_list_foreach ((GstTagList *) list, write_one_tag, &my_data);
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required_size += 4 * my_data.count + my_data.data_count;
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buffer = gst_buffer_new_and_alloc (required_size);
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data = GST_BUFFER_DATA (buffer);
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memcpy (data, id_data, id_data_length);
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data += id_data_length;
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*((guint32 *) data) = GUINT32_TO_LE (vendor_len);
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data += 4;
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memcpy (data, vendor_string, vendor_len);
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data += vendor_len;
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l = my_data.entries = g_list_reverse (my_data.entries);
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*((guint32 *) data) = GUINT32_TO_LE (my_data.count);
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data += 4;
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for (i = 0; i < my_data.count; i++) {
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guint size;
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gchar *cur;
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g_assert (l != NULL);
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cur = l->data;
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l = g_list_next (l);
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size = strlen (cur);
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*((guint32 *) data) = GUINT32_TO_LE (size);
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data += 4;
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memcpy (data, cur, size);
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data += size;
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}
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g_list_foreach (my_data.entries, (GFunc) g_free, NULL);
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g_list_free (my_data.entries);
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*data = 1;
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return buffer;
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}
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