283c2621f3
Don't depend on the daemon's locale settings. Comment names are ASCII.
392 lines
9.3 KiB
C
392 lines
9.3 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* TODO 'ogg' should probably be replaced with 'oggvorbis' in all instances */
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#include "_ogg_common.h"
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#include "config.h"
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#ifndef HAVE_TREMOR
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#include <vorbis/vorbisfile.h>
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#else
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#include <tremor/ivorbisfile.h>
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/* Macros to make Tremor's API look like libogg. Tremor always
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returns host-byte-order 16-bit signed data, and uses integer
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milliseconds where libogg uses double seconds.
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*/
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#define ov_read(VF, BUFFER, LENGTH, BIGENDIANP, WORD, SGNED, BITSTREAM) \
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ov_read(VF, BUFFER, LENGTH, BITSTREAM)
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#define ov_time_total(VF, I) ((double)ov_time_total(VF, I)/1000)
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#define ov_time_tell(VF) ((double)ov_time_tell(VF)/1000)
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#define ov_time_seek_page(VF, S) (ov_time_seek_page(VF, (S)*1000))
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#endif /* HAVE_TREMOR */
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#include <glib.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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#define OGG_DECODE_USE_BIGENDIAN 1
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#else
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#define OGG_DECODE_USE_BIGENDIAN 0
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#endif
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typedef struct _OggCallbackData {
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struct decoder *decoder;
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struct input_stream *input_stream;
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} OggCallbackData;
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static size_t ogg_read_cb(void *ptr, size_t size, size_t nmemb, void *vdata)
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{
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size_t ret;
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OggCallbackData *data = (OggCallbackData *) vdata;
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ret = decoder_read(data->decoder, data->input_stream, ptr, size * nmemb);
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errno = 0;
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return ret / size;
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}
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static int ogg_seek_cb(void *vdata, ogg_int64_t offset, int whence)
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{
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const OggCallbackData *data = (const OggCallbackData *) vdata;
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if(decoder_get_command(data->decoder) == DECODE_COMMAND_STOP)
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return -1;
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return input_stream_seek(data->input_stream, offset, whence) ? 0 : -1;
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}
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/* TODO: check Ogg libraries API and see if we can just not have this func */
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static int ogg_close_cb(G_GNUC_UNUSED void *vdata)
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{
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return 0;
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}
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static long ogg_tell_cb(void *vdata)
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{
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const OggCallbackData *data = (const OggCallbackData *) vdata;
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return (long)data->input_stream->offset;
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}
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static const char *
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vorbis_comment_value(const char *comment, const char *needle)
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{
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size_t len = strlen(needle);
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if (g_ascii_strncasecmp(comment, needle, len) == 0 &&
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comment[len] == '=')
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return comment + len + 1;
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return NULL;
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}
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static struct replay_gain_info *
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vorbis_comments_to_replay_gain(char **comments)
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{
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struct replay_gain_info *rgi;
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const char *temp;
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bool found = false;
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rgi = replay_gain_info_new();
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while (*comments) {
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if ((temp =
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vorbis_comment_value(*comments, "replaygain_track_gain"))) {
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rgi->tuples[REPLAY_GAIN_TRACK].gain = atof(temp);
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found = true;
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} else if ((temp = vorbis_comment_value(*comments,
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"replaygain_album_gain"))) {
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rgi->tuples[REPLAY_GAIN_ALBUM].gain = atof(temp);
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found = true;
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} else if ((temp = vorbis_comment_value(*comments,
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"replaygain_track_peak"))) {
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rgi->tuples[REPLAY_GAIN_TRACK].peak = atof(temp);
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found = true;
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} else if ((temp = vorbis_comment_value(*comments,
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"replaygain_album_peak"))) {
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rgi->tuples[REPLAY_GAIN_ALBUM].peak = atof(temp);
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found = true;
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}
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comments++;
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}
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if (!found) {
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replay_gain_info_free(rgi);
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rgi = NULL;
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}
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return rgi;
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}
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static const char *VORBIS_COMMENT_TRACK_KEY = "tracknumber";
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static const char *VORBIS_COMMENT_DISC_KEY = "discnumber";
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/**
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* Check if the comment's name equals the passed name, and if so, copy
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* the comment value into the tag.
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*/
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static bool
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vorbis_copy_comment(struct tag *tag, const char *comment,
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const char *name, enum tag_type tag_type)
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{
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const char *value;
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value = vorbis_comment_value(comment, name);
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if (value != NULL) {
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tag_add_item(tag, tag_type, value);
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return true;
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}
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return false;
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}
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static void
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vorbis_parse_comment(struct tag *tag, const char *comment)
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{
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assert(tag != NULL);
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if (vorbis_copy_comment(tag, comment, VORBIS_COMMENT_TRACK_KEY,
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TAG_ITEM_TRACK) ||
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vorbis_copy_comment(tag, comment, VORBIS_COMMENT_DISC_KEY,
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TAG_ITEM_DISC))
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return;
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for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
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if (vorbis_copy_comment(tag, comment,
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mpdTagItemKeys[i], i))
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return;
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}
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static struct tag *
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vorbis_comments_to_tag(char **comments)
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{
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struct tag *tag = tag_new();
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while (*comments)
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vorbis_parse_comment(tag, *comments++);
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if (tag_is_empty(tag)) {
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tag_free(tag);
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tag = NULL;
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}
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return tag;
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}
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static void
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vorbis_send_comments(struct decoder *decoder, struct input_stream *is,
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char **comments)
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{
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struct tag *tag;
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tag = vorbis_comments_to_tag(comments);
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if (!tag)
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return;
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decoder_tag(decoder, is, tag);
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tag_free(tag);
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}
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/* public */
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static void
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vorbis_stream_decode(struct decoder *decoder,
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struct input_stream *input_stream)
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{
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OggVorbis_File vf;
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ov_callbacks callbacks;
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OggCallbackData data;
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struct audio_format audio_format;
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int current_section;
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int prev_section = -1;
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long ret;
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#define OGG_CHUNK_SIZE 4096
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char chunk[OGG_CHUNK_SIZE];
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long bitRate = 0;
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long test;
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struct replay_gain_info *replay_gain_info = NULL;
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char **comments;
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bool initialized = false;
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enum decoder_command cmd = DECODE_COMMAND_NONE;
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if (ogg_stream_type_detect(input_stream) != VORBIS)
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return;
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/* rewind the stream, because ogg_stream_type_detect() has
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moved it */
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input_stream_seek(input_stream, 0, SEEK_SET);
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data.input_stream = input_stream;
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data.decoder = decoder;
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callbacks.read_func = ogg_read_cb;
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callbacks.seek_func = ogg_seek_cb;
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callbacks.close_func = ogg_close_cb;
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callbacks.tell_func = ogg_tell_cb;
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if ((ret = ov_open_callbacks(&data, &vf, NULL, 0, callbacks)) < 0) {
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const char *error;
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if (decoder_get_command(decoder) != DECODE_COMMAND_NONE)
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return;
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switch (ret) {
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case OV_EREAD:
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error = "read error";
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break;
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case OV_ENOTVORBIS:
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error = "not vorbis stream";
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break;
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case OV_EVERSION:
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error = "vorbis version mismatch";
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break;
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case OV_EBADHEADER:
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error = "invalid vorbis header";
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break;
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case OV_EFAULT:
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error = "internal logic error";
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break;
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default:
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error = "unknown error";
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break;
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}
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g_warning("Error decoding Ogg Vorbis stream: %s", error);
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return;
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}
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audio_format.bits = 16;
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do {
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if (cmd == DECODE_COMMAND_SEEK) {
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double seek_where = decoder_seek_where(decoder);
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if (0 == ov_time_seek_page(&vf, seek_where)) {
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decoder_command_finished(decoder);
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} else
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decoder_seek_error(decoder);
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}
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ret = ov_read(&vf, chunk, sizeof(chunk),
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OGG_DECODE_USE_BIGENDIAN, 2, 1, ¤t_section);
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if (ret == OV_HOLE) /* bad packet */
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ret = 0;
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else if (ret <= 0)
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/* break on EOF or other error */
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break;
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if (current_section != prev_section) {
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/*printf("new song!\n"); */
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vorbis_info *vi = ov_info(&vf, -1);
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struct replay_gain_info *new_rgi;
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audio_format.channels = vi->channels;
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audio_format.sample_rate = vi->rate;
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if (!audio_format_valid(&audio_format)) {
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g_warning("Invalid audio format: %u:%u:%u\n",
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audio_format.sample_rate,
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audio_format.bits,
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audio_format.channels);
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break;
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}
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if (!initialized) {
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float total_time = ov_time_total(&vf, -1);
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if (total_time < 0)
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total_time = 0;
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decoder_initialized(decoder, &audio_format,
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input_stream->seekable,
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total_time);
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initialized = true;
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}
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comments = ov_comment(&vf, -1)->user_comments;
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vorbis_send_comments(decoder, input_stream, comments);
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new_rgi = vorbis_comments_to_replay_gain(comments);
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if (new_rgi != NULL) {
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if (replay_gain_info != NULL)
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replay_gain_info_free(replay_gain_info);
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replay_gain_info = new_rgi;
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}
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}
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prev_section = current_section;
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if ((test = ov_bitrate_instant(&vf)) > 0)
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bitRate = test / 1000;
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cmd = decoder_data(decoder, input_stream,
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chunk, ret,
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ov_pcm_tell(&vf) / audio_format.sample_rate,
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bitRate, replay_gain_info);
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} while (cmd != DECODE_COMMAND_STOP);
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if (replay_gain_info)
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replay_gain_info_free(replay_gain_info);
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ov_clear(&vf);
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}
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static struct tag *
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vorbis_tag_dup(const char *file)
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{
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struct tag *ret;
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FILE *fp;
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OggVorbis_File vf;
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fp = fopen(file, "r");
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if (!fp) {
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return NULL;
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}
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if (ov_open(fp, &vf, NULL, 0) < 0) {
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fclose(fp);
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return NULL;
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}
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ret = vorbis_comments_to_tag(ov_comment(&vf, -1)->user_comments);
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if (!ret)
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ret = tag_new();
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ret->time = (int)(ov_time_total(&vf, -1) + 0.5);
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ov_clear(&vf);
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return ret;
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}
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static const char *const vorbis_suffixes[] = {
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"ogg", "oga", NULL
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};
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static const char *const vorbis_mime_types[] = {
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"application/ogg",
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"audio/x-vorbis+ogg",
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"application/x-ogg",
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NULL
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};
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const struct decoder_plugin vorbis_decoder_plugin = {
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.name = "oggvorbis",
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.stream_decode = vorbis_stream_decode,
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.tag_dup = vorbis_tag_dup,
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.suffixes = vorbis_suffixes,
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.mime_types = vorbis_mime_types
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};
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