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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* Copyright (C) 2008 Max Kellermann <max@duempel.org>
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "decoder_thread.h"
#include "decoder_control.h"
#include "decoder_internal.h"
#include "player_control.h"
#include "pipe.h"
#include "song.h"
#include "mapper.h"
#include "path.h"
#include "log.h"
#include "ls.h"
static bool
decoder_try_decode(const struct decoder_plugin *plugin,
struct input_stream *input_stream)
{
bool ret;
if (plugin->try_decode == NULL)
return true;
ret = plugin->try_decode(input_stream);
/* rewind the stream, so the next reader gets a fresh start */
input_stream_seek(input_stream, 0, SEEK_SET);
return ret;
}
static void decoder_run(void)
{
struct song *song = dc.next_song;
char buffer[MPD_PATH_MAX];
const char *uri;
struct decoder decoder;
int ret;
bool close_instream = true;
struct input_stream input_stream;
const struct decoder_plugin *plugin;
if (song_is_file(song))
uri = map_song_fs(song, buffer);
else
uri = song_get_url(song, buffer);
if (uri == NULL) {
dc.error = DECODE_ERROR_FILE;
return;
}
dc.current_song = dc.next_song; /* NEED LOCK */
if (!input_stream_open(&input_stream, uri)) {
dc.error = DECODE_ERROR_FILE;
return;
}
decoder.seeking = false;
decoder.stream_tag_sent = false;
dc.state = DECODE_STATE_START;
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
/* wait for the input stream to become ready; its metadata
will be available then */
while (!input_stream.ready) {
if (dc.command != DECODE_COMMAND_NONE) {
input_stream_close(&input_stream);
return;
}
ret = input_stream_buffer(&input_stream);
if (ret < 0) {
input_stream_close(&input_stream);
return;
}
}
if (dc.command == DECODE_COMMAND_STOP) {
input_stream_close(&input_stream);
return;
}
ret = false;
if (!song_is_file(song)) {
unsigned int next = 0;
/* first we try mime types: */
while ((plugin = decoder_plugin_from_mime_type(input_stream.mime, next++))) {
if (plugin->stream_decode == NULL)
continue;
if (!(plugin->stream_types & INPUT_PLUGIN_STREAM_URL))
continue;
if (!decoder_try_decode(plugin, &input_stream))
continue;
ret = plugin->stream_decode(&decoder, &input_stream);
break;
}
/* if that fails, try suffix matching the URL: */
if (plugin == NULL) {
const char *s = getSuffix(uri);
next = 0;
while ((plugin = decoder_plugin_from_suffix(s, next++))) {
if (plugin->stream_decode == NULL)
continue;
if (!(plugin->stream_types &
INPUT_PLUGIN_STREAM_URL))
continue;
if (!decoder_try_decode(plugin, &input_stream))
continue;
decoder.plugin = plugin;
ret = plugin->stream_decode(&decoder,
&input_stream);
break;
}
}
/* fallback to mp3: */
/* this is needed for bastard streams that don't have a suffix
or set the mimeType */
if (plugin == NULL) {
/* we already know our mp3Plugin supports streams, no
* need to check for stream{Types,DecodeFunc} */
if ((plugin = decoder_plugin_from_name("mp3"))) {
decoder.plugin = plugin;
ret = plugin->stream_decode(&decoder,
&input_stream);
}
}
} else {
unsigned int next = 0;
const char *s = getSuffix(uri);
while ((plugin = decoder_plugin_from_suffix(s, next++))) {
if (!plugin->stream_types & INPUT_PLUGIN_STREAM_FILE)
continue;
if (!decoder_try_decode(plugin, &input_stream))
continue;
if (plugin->file_decode != NULL) {
input_stream_close(&input_stream);
close_instream = false;
decoder.plugin = plugin;
ret = plugin->file_decode(&decoder, uri);
break;
} else if (plugin->stream_decode != NULL) {
decoder.plugin = plugin;
ret = plugin->stream_decode(&decoder,
&input_stream);
break;
}
}
}
music_pipe_flush();
if (!ret) {
dc.error = plugin == NULL
? DECODE_ERROR_UNKTYPE
: DECODE_ERROR_FILE;
}
if (close_instream)
input_stream_close(&input_stream);
}
static void * decoder_task(mpd_unused void *arg)
{
while (1) {
assert(dc.state == DECODE_STATE_STOP);
switch (dc.command) {
case DECODE_COMMAND_START:
case DECODE_COMMAND_SEEK:
decoder_run();
dc.state = DECODE_STATE_STOP;
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
break;
case DECODE_COMMAND_STOP:
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
break;
case DECODE_COMMAND_NONE:
notify_wait(&dc.notify);
break;
}
}
return NULL;
}
void decoder_thread_start(void)
{
pthread_attr_t attr;
pthread_t decoder_thread;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (pthread_create(&decoder_thread, &attr, decoder_task, NULL))
FATAL("Failed to spawn decoder task: %s\n", strerror(errno));
}
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