/* * Copyright (C) 2003-2010 The Music Player Daemon Project * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include "player_control.h" #include "decoder_control.h" #include "path.h" #include "log.h" #include "tag.h" #include "song.h" #include "idle.h" #include "pcm_volume.h" #include "main.h" #include <assert.h> #include <stdio.h> #include <math.h> struct player_control pc; static void pc_enqueue_song_locked(struct song *song); void pc_init(unsigned buffer_chunks, unsigned int buffered_before_play) { pc.buffer_chunks = buffer_chunks; pc.buffered_before_play = buffered_before_play; pc.mutex = g_mutex_new(); pc.cond = g_cond_new(); pc.command = PLAYER_COMMAND_NONE; pc.error = PLAYER_ERROR_NOERROR; pc.state = PLAYER_STATE_STOP; pc.cross_fade_seconds = 0; pc.mixramp_db = 0; pc.mixramp_delay_seconds = nanf(""); } void pc_deinit(void) { g_cond_free(pc.cond); g_mutex_free(pc.mutex); } void player_wait_decoder(struct decoder_control *dc) { /* during this function, the decoder lock is held, because we're waiting for the decoder thread */ g_cond_wait(pc.cond, dc->mutex); } void pc_song_deleted(const struct song *song) { if (pc.errored_song == song) { pc.error = PLAYER_ERROR_NOERROR; pc.errored_song = NULL; } } static void player_command_wait_locked(void) { while (pc.command != PLAYER_COMMAND_NONE) g_cond_wait(main_cond, pc.mutex); } static void player_command_locked(enum player_command cmd) { assert(pc.command == PLAYER_COMMAND_NONE); pc.command = cmd; player_signal(); player_command_wait_locked(); } static void player_command(enum player_command cmd) { player_lock(); player_command_locked(cmd); player_unlock(); } void pc_play(struct song *song) { assert(song != NULL); player_lock(); if (pc.state != PLAYER_STATE_STOP) player_command_locked(PLAYER_COMMAND_STOP); assert(pc.next_song == NULL); pc_enqueue_song_locked(song); assert(pc.next_song == NULL); player_unlock(); idle_add(IDLE_PLAYER); } void pc_cancel(void) { player_command(PLAYER_COMMAND_CANCEL); assert(pc.next_song == NULL); } void pc_stop(void) { player_command(PLAYER_COMMAND_CLOSE_AUDIO); assert(pc.next_song == NULL); idle_add(IDLE_PLAYER); } void pc_update_audio(void) { player_command(PLAYER_COMMAND_UPDATE_AUDIO); } void pc_kill(void) { assert(pc.thread != NULL); player_command(PLAYER_COMMAND_EXIT); g_thread_join(pc.thread); pc.thread = NULL; idle_add(IDLE_PLAYER); } void pc_pause(void) { player_lock(); if (pc.state != PLAYER_STATE_STOP) { player_command_locked(PLAYER_COMMAND_PAUSE); idle_add(IDLE_PLAYER); } player_unlock(); } static void pc_pause_locked(void) { if (pc.state != PLAYER_STATE_STOP) { player_command_locked(PLAYER_COMMAND_PAUSE); idle_add(IDLE_PLAYER); } } void pc_set_pause(bool pause_flag) { player_lock(); switch (pc.state) { case PLAYER_STATE_STOP: break; case PLAYER_STATE_PLAY: if (pause_flag) pc_pause_locked(); break; case PLAYER_STATE_PAUSE: if (!pause_flag) pc_pause_locked(); break; } player_unlock(); } void pc_get_status(struct player_status *status) { player_lock(); player_command_locked(PLAYER_COMMAND_REFRESH); status->state = pc.state; if (pc.state != PLAYER_STATE_STOP) { status->bit_rate = pc.bit_rate; status->audio_format = pc.audio_format; status->total_time = pc.total_time; status->elapsed_time = pc.elapsed_time; } player_unlock(); } enum player_state pc_get_state(void) { return pc.state; } void pc_clear_error(void) { player_lock(); pc.error = PLAYER_ERROR_NOERROR; pc.errored_song = NULL; player_unlock(); } enum player_error pc_get_error(void) { return pc.error; } static char * pc_errored_song_uri(void) { return song_get_uri(pc.errored_song); } char * pc_get_error_message(void) { char *error; char *uri; switch (pc.error) { case PLAYER_ERROR_NOERROR: return NULL; case PLAYER_ERROR_FILENOTFOUND: uri = pc_errored_song_uri(); error = g_strdup_printf("file \"%s\" does not exist or is inaccessible", uri); g_free(uri); return error; case PLAYER_ERROR_FILE: uri = pc_errored_song_uri(); error = g_strdup_printf("problems decoding \"%s\"", uri); g_free(uri); return error; case PLAYER_ERROR_AUDIO: return g_strdup("problems opening audio device"); case PLAYER_ERROR_SYSTEM: return g_strdup("system error occured"); case PLAYER_ERROR_UNKTYPE: uri = pc_errored_song_uri(); error = g_strdup_printf("file type of \"%s\" is unknown", uri); g_free(uri); return error; } assert(false); return NULL; } static void pc_enqueue_song_locked(struct song *song) { assert(song != NULL); assert(pc.next_song == NULL); pc.next_song = song; player_command_locked(PLAYER_COMMAND_QUEUE); } void pc_enqueue_song(struct song *song) { assert(song != NULL); player_lock(); pc_enqueue_song_locked(song); player_unlock(); } bool pc_seek(struct song *song, float seek_time) { assert(song != NULL); if (pc.state == PLAYER_STATE_STOP) return false; player_lock(); pc.next_song = song; pc.seek_where = seek_time; player_command_locked(PLAYER_COMMAND_SEEK); player_unlock(); assert(pc.next_song == NULL); idle_add(IDLE_PLAYER); return true; } float pc_get_cross_fade(void) { return pc.cross_fade_seconds; } void pc_set_cross_fade(float cross_fade_seconds) { if (cross_fade_seconds < 0) cross_fade_seconds = 0; pc.cross_fade_seconds = cross_fade_seconds; idle_add(IDLE_OPTIONS); } float pc_get_mixramp_db(void) { return pc.mixramp_db; } void pc_set_mixramp_db(float mixramp_db) { pc.mixramp_db = mixramp_db; idle_add(IDLE_OPTIONS); } float pc_get_mixramp_delay(void) { return pc.mixramp_delay_seconds; } void pc_set_mixramp_delay(float mixramp_delay_seconds) { pc.mixramp_delay_seconds = mixramp_delay_seconds; idle_add(IDLE_OPTIONS); } double pc_get_total_play_time(void) { return pc.total_play_time; }