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34974eed13
Original commit message from CVS: * ext/taglib/gstapev2mux.cc: * ext/taglib/gstid3v2mux.cc: Work around compiler warnings with g++-4.2 when assigning a string constant to a gchar * (partially fixes #478092).
378 lines
12 KiB
C++
378 lines
12 KiB
C++
/* GStreamer taglib-based APEv2 muxer
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* Copyright (C) 2006 Christophe Fergeau <teuf@gnome.org>
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* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
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* Copyright (C) 2006 Sebastian Dröge <slomo@circular-chaos.org>
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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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/**
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* SECTION:element-apev2mux
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* @see_also: #GstTagSetter
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*
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* <refsect2>
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* <para>
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* This element adds APEv2 tags to the beginning of a stream using the taglib
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* library.
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* </para>
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* <para>
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* Applications can set the tags to write using the #GstTagSetter interface.
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* Tags sent by upstream elements will be picked up automatically (and merged
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* according to the merge mode set via the tag setter interface).
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* </para>
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* <para>
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* Here is a simple pipeline that transcodes a file from Ogg/Vorbis to mp3
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* format with an APEv2 that contains the same as the the Ogg/Vorbis file:
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* <programlisting>
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* gst-launch -v filesrc location=foo.ogg ! decodebin ! audioconvert ! lame ! apev2mux ! filesink location=foo.mp3
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* </programlisting>
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* Make sure the Ogg/Vorbis file actually has comments to preserve.
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* You can verify the tags were written using:
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* <programlisting>
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* gst-launch -m filesrc location=foo.mp3 ! apedemux ! fakesink silent=TRUE 2> /dev/null | grep taglist
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* </programlisting>
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* </para>
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* </refsect2>
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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 "gstapev2mux.h"
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#include <string.h>
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#include <apetag.h>
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#include <gst/tag/tag.h>
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using namespace TagLib;
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GST_DEBUG_CATEGORY_STATIC (gst_apev2_mux_debug);
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#define GST_CAT_DEFAULT gst_apev2_mux_debug
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-apetag"));
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GST_BOILERPLATE (GstApev2Mux, gst_apev2_mux, GstTagLibMux,
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GST_TYPE_TAG_LIB_MUX);
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static GstBuffer *gst_apev2_mux_render_tag (GstTagLibMux * mux,
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GstTagList * taglist);
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static void
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gst_apev2_mux_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_template));
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gst_element_class_set_details_simple (element_class,
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"TagLib-based APEv2 Muxer", "Formatter/Metadata",
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"Adds an APEv2 header to the beginning of files using taglib",
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"Sebastian Dröge <slomo@circular-chaos.org>");
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GST_DEBUG_CATEGORY_INIT (gst_apev2_mux_debug, "apev2mux", 0,
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"taglib-based APEv2 tag muxer");
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}
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static void
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gst_apev2_mux_class_init (GstApev2MuxClass * klass)
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{
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GST_TAG_LIB_MUX_CLASS (klass)->render_tag =
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GST_DEBUG_FUNCPTR (gst_apev2_mux_render_tag);
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}
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static void
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gst_apev2_mux_init (GstApev2Mux * apev2mux, GstApev2MuxClass * apev2mux_class)
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{
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/* nothing to do */
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}
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static void
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add_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
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{
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APE::Tag * apev2tag = (APE::Tag *) user_data;
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gboolean result;
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/* FIXME: if there are several values set for the same tag, this won't
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* work, only the first value will be taken into account
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*/
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if (strcmp (tag, GST_TAG_TITLE) == 0) {
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char *title;
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result = gst_tag_list_get_string_index (list, tag, 0, &title);
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if (result != FALSE) {
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GST_DEBUG ("Setting title to %s", title);
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apev2tag->setTitle (String::String (title, String::UTF8));
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}
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g_free (title);
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} else if (strcmp (tag, GST_TAG_ALBUM) == 0) {
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char *album;
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result = gst_tag_list_get_string_index (list, tag, 0, &album);
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if (result != FALSE) {
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GST_DEBUG ("Setting album to %s", album);
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apev2tag->setAlbum (String::String (album, String::UTF8));
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}
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g_free (album);
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} else if (strcmp (tag, GST_TAG_ARTIST) == 0) {
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char *artist;
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result = gst_tag_list_get_string_index (list, tag, 0, &artist);
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if (result != FALSE) {
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GST_DEBUG ("Setting artist to %s", artist);
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apev2tag->setArtist (String::String (artist, String::UTF8));
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}
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g_free (artist);
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} else if (strcmp (tag, GST_TAG_GENRE) == 0) {
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char *genre;
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result = gst_tag_list_get_string_index (list, tag, 0, &genre);
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if (result != FALSE) {
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GST_DEBUG ("Setting genre to %s", genre);
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apev2tag->setGenre (String::String (genre, String::UTF8));
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}
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g_free (genre);
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} else if (strcmp (tag, GST_TAG_COMMENT) == 0) {
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char *comment;
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result = gst_tag_list_get_string_index (list, tag, 0, &comment);
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if (result != FALSE) {
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GST_DEBUG ("Setting comment to %s", comment);
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apev2tag->setComment (String::String (comment, String::UTF8));
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}
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g_free (comment);
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} else if (strcmp (tag, GST_TAG_DATE) == 0) {
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GDate *date;
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result = gst_tag_list_get_date_index (list, tag, 0, &date);
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if (result != FALSE) {
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GDateYear year;
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year = g_date_get_year (date);
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GST_DEBUG ("Setting track year to %d", year);
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apev2tag->setYear (year);
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g_date_free (date);
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}
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} else if (strcmp (tag, GST_TAG_TRACK_NUMBER) == 0) {
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guint track_number;
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result = gst_tag_list_get_uint_index (list, tag, 0, &track_number);
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if (result != FALSE) {
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guint total_tracks;
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result = gst_tag_list_get_uint_index (list, GST_TAG_TRACK_COUNT,
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0, &total_tracks);
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if (result) {
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gchar *tag_str;
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tag_str = g_strdup_printf ("%d/%d", track_number, total_tracks);
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GST_DEBUG ("Setting track number to %s", tag_str);
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apev2tag->addValue (String::String ("TRACK", String::UTF8),
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String::String (tag_str, String::UTF8), true);
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g_free (tag_str);
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} else {
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GST_DEBUG ("Setting track number to %d", track_number);
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apev2tag->setTrack (track_number);
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}
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}
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} else if (strcmp (tag, GST_TAG_TRACK_COUNT) == 0) {
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guint n;
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if (gst_tag_list_get_uint_index (list, GST_TAG_TRACK_NUMBER, 0, &n)) {
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GST_DEBUG ("track-count handled with track-number, skipping");
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} else if (gst_tag_list_get_uint_index (list, GST_TAG_TRACK_COUNT, 0, &n)) {
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gchar *tag_str;
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tag_str = g_strdup_printf ("0/%d", n);
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GST_DEBUG ("Setting track number to %s", tag_str);
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apev2tag->addValue (String::String ("TRACK", String::UTF8),
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String::String (tag_str, String::UTF8), true);
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g_free (tag_str);
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}
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#if 0
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} else if (strcmp (tag, GST_TAG_ALBUM_VOLUME_NUMBER) == 0) {
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guint volume_number;
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result = gst_tag_list_get_uint_index (list, tag, 0, &volume_number);
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if (result != FALSE) {
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guint volume_count;
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gchar *tag_str;
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result = gst_tag_list_get_uint_index (list, GST_TAG_ALBUM_VOLUME_COUNT,
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0, &volume_count);
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if (result) {
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tag_str = g_strdup_printf ("CD %d/%d", volume_number, volume_count);
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} else {
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tag_str = g_strdup_printf ("CD %d", volume_number);
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}
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GST_DEBUG ("Setting album number to %s", tag_str);
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apev2tag->addValue (String::String ("MEDIA", String::UTF8),
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String::String (tag_str, String::UTF8), true);
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g_free (tag_str);
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}
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} else if (strcmp (tag, GST_TAG_ALBUM_VOLUME_COUNT) == 0) {
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guint n;
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if (gst_tag_list_get_uint_index (list, GST_TAG_ALBUM_VOLUME_NUMBER, 0, &n)) {
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GST_DEBUG ("volume-count handled with volume-number, skipping");
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} else if (gst_tag_list_get_uint_index (list, GST_TAG_ALBUM_VOLUME_COUNT,
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0, &n)) {
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gchar *tag_str;
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tag_str = g_strdup_printf ("CD 0/%u", n);
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GST_DEBUG ("Setting album volume number/count to %s", tag_str);
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apev2tag->addValue (String::String ("MEDIA", String::UTF8),
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String::String (tag_str, String::UTF8), true);
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g_free (tag_str);
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}
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#endif
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} else if (strcmp (tag, GST_TAG_COPYRIGHT) == 0) {
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gchar *copyright;
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result = gst_tag_list_get_string_index (list, tag, 0, ©right);
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if (result != FALSE) {
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GST_DEBUG ("Setting copyright to %s", copyright);
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apev2tag->addValue (String::String ("COPYRIGHT", String::UTF8),
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String::String (copyright, String::UTF8), true);
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g_free (copyright);
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}
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} else if (strcmp (tag, GST_TAG_LOCATION) == 0) {
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gchar *location;
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result = gst_tag_list_get_string_index (list, tag, 0, &location);
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if (result != FALSE) {
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GST_DEBUG ("Setting location to %s", location);
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apev2tag->addValue (String::String ("FILE", String::UTF8),
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String::String (location, String::UTF8), true);
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g_free (location);
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}
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} else if (strcmp (tag, GST_TAG_ISRC) == 0) {
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gchar *isrc;
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result = gst_tag_list_get_string_index (list, tag, 0, &isrc);
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if (result != FALSE) {
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GST_DEBUG ("Setting ISRC to %s", isrc);
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apev2tag->addValue (String::String ("ISRC", String::UTF8),
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String::String (isrc, String::UTF8), true);
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g_free (isrc);
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}
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} else if (strcmp (tag, GST_TAG_TRACK_GAIN) == 0) {
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gdouble value;
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result = gst_tag_list_get_double_index (list, tag, 0, &value);
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if (result != FALSE) {
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gchar *track_gain = (gchar *) g_malloc0 (G_ASCII_DTOSTR_BUF_SIZE);
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track_gain = g_ascii_dtostr (track_gain, G_ASCII_DTOSTR_BUF_SIZE, value);
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GST_DEBUG ("Setting track gain to %s", track_gain);
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apev2tag->addValue (String::String ("REPLAYGAIN_TRACK_GAIN",
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String::UTF8), String::String (track_gain, String::UTF8), true);
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g_free (track_gain);
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}
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} else if (strcmp (tag, GST_TAG_TRACK_PEAK) == 0) {
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gdouble value;
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result = gst_tag_list_get_double_index (list, tag, 0, &value);
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if (result != FALSE) {
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gchar *track_peak = (gchar *) g_malloc0 (G_ASCII_DTOSTR_BUF_SIZE);
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track_peak = g_ascii_dtostr (track_peak, G_ASCII_DTOSTR_BUF_SIZE, value);
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GST_DEBUG ("Setting track peak to %s", track_peak);
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apev2tag->addValue (String::String ("REPLAYGAIN_TRACK_PEAK",
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String::UTF8), String::String (track_peak, String::UTF8), true);
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g_free (track_peak);
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}
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} else if (strcmp (tag, GST_TAG_ALBUM_GAIN) == 0) {
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gdouble value;
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result = gst_tag_list_get_double_index (list, tag, 0, &value);
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if (result != FALSE) {
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gchar *album_gain = (gchar *) g_malloc0 (G_ASCII_DTOSTR_BUF_SIZE);
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album_gain = g_ascii_dtostr (album_gain, G_ASCII_DTOSTR_BUF_SIZE, value);
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GST_DEBUG ("Setting album gain to %s", album_gain);
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apev2tag->addValue (String::String ("REPLAYGAIN_ALBUM_GAIN",
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String::UTF8), String::String (album_gain, String::UTF8), true);
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g_free (album_gain);
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}
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} else if (strcmp (tag, GST_TAG_ALBUM_PEAK) == 0) {
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gdouble value;
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result = gst_tag_list_get_double_index (list, tag, 0, &value);
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if (result != FALSE) {
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gchar *album_peak = (gchar *) g_malloc0 (G_ASCII_DTOSTR_BUF_SIZE);
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album_peak = g_ascii_dtostr (album_peak, G_ASCII_DTOSTR_BUF_SIZE, value);
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GST_DEBUG ("Setting album peak to %s", album_peak);
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apev2tag->addValue (String::String ("REPLAYGAIN_ALBUM_PEAK",
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String::UTF8), String::String (album_peak, String::UTF8), true);
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g_free (album_peak);
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}
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} else {
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GST_WARNING ("Unsupported tag: %s", tag);
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}
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}
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static GstBuffer *
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gst_apev2_mux_render_tag (GstTagLibMux * mux, GstTagList * taglist)
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{
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APE::Tag apev2tag;
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ByteVector rendered_tag;
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GstBuffer *buf;
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guint tag_size;
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/* Render the tag */
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gst_tag_list_foreach (taglist, add_one_tag, &apev2tag);
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rendered_tag = apev2tag.render ();
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tag_size = rendered_tag.size ();
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GST_LOG_OBJECT (mux, "tag size = %d bytes", tag_size);
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/* Create buffer with tag */
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buf = gst_buffer_new_and_alloc (tag_size);
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memcpy (GST_BUFFER_DATA (buf), rendered_tag.data (), tag_size);
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gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
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return buf;
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}
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gboolean
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gst_apev2_mux_plugin_init (GstPlugin * plugin)
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{
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if (!gst_element_register (plugin, "apev2mux", GST_RANK_NONE,
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GST_TYPE_APEV2_MUX))
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return FALSE;
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return TRUE;
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}
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