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-rw-r--r--trunk/src/player.c530
1 files changed, 530 insertions, 0 deletions
diff --git a/trunk/src/player.c b/trunk/src/player.c
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+++ b/trunk/src/player.c
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+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * 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 "player.h"
+#include "path.h"
+#include "decode.h"
+#include "command.h"
+#include "interface.h"
+#include "playlist.h"
+#include "ls.h"
+#include "listen.h"
+#include "log.h"
+#include "utils.h"
+#include "directory.h"
+#include "volume.h"
+#include "playerData.h"
+#include "permission.h"
+#include "sig_handlers.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+
+volatile int player_pid = 0;
+
+void clearPlayerPid(void)
+{
+ player_pid = 0;
+}
+
+static void resetPlayerMetadata(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (pc->metadataState == PLAYER_METADATA_STATE_READ) {
+ pc->metadataState = PLAYER_METADATA_STATE_WRITE;
+ }
+}
+
+static void resetPlayer(void)
+{
+ int pid;
+
+ clearPlayerPid();
+ getPlayerData()->playerControl.stop = 0;
+ getPlayerData()->playerControl.play = 0;
+ getPlayerData()->playerControl.pause = 0;
+ getPlayerData()->playerControl.lockQueue = 0;
+ getPlayerData()->playerControl.unlockQueue = 0;
+ getPlayerData()->playerControl.state = PLAYER_STATE_STOP;
+ getPlayerData()->playerControl.queueState = PLAYER_QUEUE_UNLOCKED;
+ getPlayerData()->playerControl.seek = 0;
+ getPlayerData()->playerControl.metadataState =
+ PLAYER_METADATA_STATE_WRITE;
+ pid = getPlayerData()->playerControl.decode_pid;
+ if (pid > 0)
+ kill(pid, SIGTERM);
+ getPlayerData()->playerControl.decode_pid = 0;
+}
+
+void player_sigChldHandler(int pid, int status)
+{
+ if (player_pid == pid)
+ {
+ DEBUG("SIGCHLD caused by player process\n");
+ if (WIFSIGNALED(status) &&
+ WTERMSIG(status) != SIGTERM &&
+ WTERMSIG(status) != SIGINT)
+ {
+ ERROR("player process died from signal: %i\n",
+ WTERMSIG(status));
+ }
+ resetPlayer();
+ }
+ else if (pid == getPlayerData()->playerControl.decode_pid &&
+ player_pid <= 0)
+ {
+ if (WIFSIGNALED(status) && WTERMSIG(status) != SIGTERM)
+ {
+ ERROR("(caught by master parent) "
+ "decode process died from a "
+ "non-TERM signal: %i\n", WTERMSIG(status));
+ }
+ getPlayerData()->playerControl.decode_pid = 0;
+ }
+}
+
+int playerInit(void)
+{
+ blockSignals();
+ player_pid = fork();
+ if (player_pid==0)
+ {
+ clock_t start = clock();
+
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ unblockSignals();
+
+ setSigHandlersForDecoder();
+
+ closeAllListenSockets();
+ freeAllInterfaces();
+ finishPlaylist();
+ closeMp3Directory();
+ finishPermissions();
+ finishCommands();
+ finishVolume();
+
+ DEBUG("took %f to init player\n",
+ (float)(clock()-start)/CLOCKS_PER_SEC);
+
+ while (1) {
+ if (pc->play)
+ decode();
+ else if (pc->stop)
+ pc->stop = 0;
+ else if (pc->seek)
+ pc->seek = 0;
+ else if (pc->pause)
+ pc->pause = 0;
+ else if (pc->closeAudio) {
+ closeAudioDevice();
+ pc->closeAudio = 0;
+ kill(getppid(), SIGUSR1);
+ } else if (pc->lockQueue) {
+ pc->queueLockState = PLAYER_QUEUE_LOCKED;
+ pc->lockQueue = 0;
+ } else if (pc->unlockQueue) {
+ pc->queueLockState = PLAYER_QUEUE_UNLOCKED;
+ pc->unlockQueue = 0;
+ } else if (pc->cycleLogFiles) {
+ cycle_log_files();
+ pc->cycleLogFiles = 0;
+ } else
+ my_usleep(10000);
+ }
+
+ exit(EXIT_SUCCESS);
+ }
+ else if (player_pid < 0)
+ {
+ unblockSignals();
+ ERROR("player Problems fork()'ing\n");
+ player_pid = 0;
+ return -1;
+ }
+
+ unblockSignals();
+
+ return 0;
+}
+
+int playerPlay(int fd, Song * song)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (playerStop(fd) < 0)
+ return -1;
+
+ if (song->tag)
+ pc->fileTime = song->tag->time;
+ else
+ pc->fileTime = 0;
+
+ copyMpdTagToMetadataChunk(song->tag, &(pc->fileMetadataChunk));
+
+ pathcpy_trunc(pc->utf8url, getSongUrl(song));
+
+ pc->play = 1;
+ if (player_pid == 0 && playerInit() < 0) {
+ pc->play = 0;
+ return -1;
+ }
+
+ resetPlayerMetadata();
+ while (player_pid > 0 && pc->play)
+ my_usleep(1000);
+
+ return 0;
+}
+
+int playerStop(int fd)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (player_pid > 0 && pc->state != PLAYER_STATE_STOP) {
+ pc->stop = 1;
+ while (player_pid > 0 && pc->stop)
+ my_usleep(1000);
+ }
+
+ pc->queueState = PLAYER_QUEUE_BLANK;
+ playerQueueUnlock();
+
+ return 0;
+}
+
+void playerKill(void)
+{
+ int pid;
+ /*PlayerControl * pc = &(getPlayerData()->playerControl);
+
+ playerStop(stderr);
+ playerCloseAudio(stderr);
+ if(player_pid>0 && pc->closeAudio) sleep(1); */
+
+ pid = player_pid;
+ if (pid > 0)
+ kill(pid, SIGTERM);
+}
+
+int playerPause(int fd)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (player_pid > 0 && pc->state != PLAYER_STATE_STOP) {
+ pc->pause = 1;
+ while (player_pid > 0 && pc->pause)
+ my_usleep(1000);
+ }
+
+ return 0;
+}
+
+int playerSetPause(int fd, int pause)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (player_pid <= 0)
+ return 0;
+
+ switch (pc->state) {
+ case PLAYER_STATE_PLAY:
+ if (pause)
+ playerPause(fd);
+ break;
+ case PLAYER_STATE_PAUSE:
+ if (!pause)
+ playerPause(fd);
+ break;
+ }
+
+ return 0;
+}
+
+int getPlayerElapsedTime(void)
+{
+ return (int)(getPlayerData()->playerControl.elapsedTime + 0.5);
+}
+
+unsigned long getPlayerBitRate(void)
+{
+ return getPlayerData()->playerControl.bitRate;
+}
+
+int getPlayerTotalTime(void)
+{
+ return (int)(getPlayerData()->playerControl.totalTime + 0.5);
+}
+
+int getPlayerState(void)
+{
+ return getPlayerData()->playerControl.state;
+}
+
+void clearPlayerError(void)
+{
+ getPlayerData()->playerControl.error = 0;
+}
+
+int getPlayerError(void)
+{
+ return getPlayerData()->playerControl.error;
+}
+
+char *getPlayerErrorStr(void)
+{
+ static char *error;
+ int errorlen = MAXPATHLEN + 1024;
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ error = xrealloc(error, errorlen);
+ error[0] = '\0';
+
+ switch (pc->error) {
+ case PLAYER_ERROR_FILENOTFOUND:
+ snprintf(error, errorlen,
+ "file \"%s\" does not exist or is inaccessible",
+ pc->erroredUrl);
+ break;
+ case PLAYER_ERROR_FILE:
+ snprintf(error, errorlen, "problems decoding \"%s\"",
+ pc->erroredUrl);
+ break;
+ case PLAYER_ERROR_AUDIO:
+ snprintf(error, errorlen, "problems opening audio device");
+ break;
+ case PLAYER_ERROR_SYSTEM:
+ snprintf(error, errorlen, "system error occured");
+ break;
+ case PLAYER_ERROR_UNKTYPE:
+ snprintf(error, errorlen, "file type of \"%s\" is unknown",
+ pc->erroredUrl);
+ default:
+ break;
+ }
+
+ errorlen = strlen(error);
+ error = xrealloc(error, errorlen + 1);
+
+ if (errorlen)
+ return error;
+
+ return NULL;
+}
+
+void playerCloseAudio(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (player_pid > 0) {
+ if (playerStop(STDERR_FILENO) < 0)
+ return;
+ pc->closeAudio = 1;
+ }
+}
+
+int queueSong(Song * song)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (pc->queueState == PLAYER_QUEUE_BLANK) {
+ pathcpy_trunc(pc->utf8url, getSongUrl(song));
+
+ if (song->tag)
+ pc->fileTime = song->tag->time;
+ else
+ pc->fileTime = 0;
+
+ copyMpdTagToMetadataChunk(song->tag, &(pc->fileMetadataChunk));
+
+ pc->queueState = PLAYER_QUEUE_FULL;
+ return 0;
+ }
+
+ return -1;
+}
+
+int getPlayerQueueState(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ return pc->queueState;
+}
+
+void setQueueState(int queueState)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ pc->queueState = queueState;
+}
+
+void playerQueueLock(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (player_pid > 0 && pc->queueLockState == PLAYER_QUEUE_UNLOCKED) {
+ pc->lockQueue = 1;
+ while (player_pid > 0 && pc->lockQueue)
+ my_usleep(1000);
+ }
+}
+
+void playerQueueUnlock(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (player_pid > 0 && pc->queueLockState == PLAYER_QUEUE_LOCKED) {
+ pc->unlockQueue = 1;
+ while (player_pid > 0 && pc->unlockQueue)
+ my_usleep(1000);
+ }
+}
+
+int playerSeek(int fd, Song * song, float time)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (pc->state == PLAYER_STATE_STOP) {
+ commandError(fd, ACK_ERROR_PLAYER_SYNC,
+ "player not currently playing");
+ return -1;
+ }
+
+ if (strcmp(pc->utf8url, getSongUrl(song)) != 0) {
+ if (song->tag)
+ pc->fileTime = song->tag->time;
+ else
+ pc->fileTime = 0;
+
+ copyMpdTagToMetadataChunk(song->tag, &(pc->fileMetadataChunk));
+
+ pathcpy_trunc(pc->utf8url, getSongUrl(song));
+ }
+
+ if (pc->error == PLAYER_ERROR_NOERROR) {
+ resetPlayerMetadata();
+ pc->seekWhere = time;
+ pc->seek = 1;
+ while (player_pid > 0 && pc->seek)
+ my_usleep(1000);
+ }
+
+ return 0;
+}
+
+float getPlayerCrossFade(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ return pc->crossFade;
+}
+
+void setPlayerCrossFade(float crossFadeInSeconds)
+{
+ PlayerControl *pc;
+ if (crossFadeInSeconds < 0)
+ crossFadeInSeconds = 0;
+
+ pc = &(getPlayerData()->playerControl);
+
+ pc->crossFade = crossFadeInSeconds;
+}
+
+void setPlayerSoftwareVolume(int volume)
+{
+ PlayerControl *pc;
+ volume = (volume > 1000) ? 1000 : (volume < 0 ? 0 : volume);
+
+ pc = &(getPlayerData()->playerControl);
+
+ pc->softwareVolume = volume;
+}
+
+double getPlayerTotalPlayTime(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ return pc->totalPlayTime;
+}
+
+unsigned int getPlayerSampleRate(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ return pc->sampleRate;
+}
+
+int getPlayerBits(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ return pc->bits;
+}
+
+int getPlayerChannels(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ return pc->channels;
+}
+
+void playerCycleLogFiles(void)
+{
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+ DecoderControl *dc = &(getPlayerData()->decoderControl);
+
+ pc->cycleLogFiles = 1;
+ dc->cycleLogFiles = 1;
+}
+
+/* this actually creates a dupe of the current metadata */
+Song *playerCurrentDecodeSong(void)
+{
+ static Song *song;
+ static MetadataChunk *prev;
+ Song *ret = NULL;
+ PlayerControl *pc = &(getPlayerData()->playerControl);
+
+ if (pc->metadataState == PLAYER_METADATA_STATE_READ) {
+ DEBUG("playerCurrentDecodeSong: caught new metadata!\n");
+ if (prev)
+ free(prev);
+ prev = xmalloc(sizeof(MetadataChunk));
+ memcpy(prev, &(pc->metadataChunk), sizeof(MetadataChunk));
+ if (song)
+ freeJustSong(song);
+ song = newNullSong();
+ song->url = xstrdup(pc->currentUrl);
+ song->tag = metadataChunkToMpdTagDup(prev);
+ ret = song;
+ resetPlayerMetadata();
+ }
+
+ return ret;
+}
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