diff options
Diffstat (limited to 'trunk/src/volume.c')
| -rw-r--r-- | trunk/src/volume.c | 552 |
1 files changed, 0 insertions, 552 deletions
diff --git a/trunk/src/volume.c b/trunk/src/volume.c deleted file mode 100644 index 59e8b550c..000000000 --- a/trunk/src/volume.c +++ /dev/null @@ -1,552 +0,0 @@ -/* 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 "volume.h" - -#include "command.h" -#include "conf.h" -#include "log.h" -#include "player.h" -#include "state_file.h" -#include "gcc.h" -#include "utils.h" - -#include <math.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include <fcntl.h> -#include <errno.h> -#ifdef HAVE_OSS -#include <sys/soundcard.h> -#endif -#ifdef HAVE_ALSA -#include <alsa/asoundlib.h> -#endif - -#define VOLUME_MIXER_TYPE_SOFTWARE 0 -#define VOLUME_MIXER_TYPE_OSS 1 -#define VOLUME_MIXER_TYPE_ALSA 2 - -#define VOLUME_MIXER_SOFTWARE_DEFAULT "" -#define VOLUME_MIXER_OSS_DEFAULT "/dev/mixer" -#define VOLUME_MIXER_ALSA_DEFAULT "default" -#define VOLUME_MIXER_ALSA_CONTROL_DEFAULT "PCM" -#define SW_VOLUME_STATE "sw_volume: " - -#ifdef HAVE_OSS -#define VOLUME_MIXER_TYPE_DEFAULT VOLUME_MIXER_TYPE_OSS -#define VOLUME_MIXER_DEVICE_DEFAULT VOLUME_MIXER_OSS_DEFAULT -#else -#ifdef HAVE_ALSA -#define VOLUME_MIXER_TYPE_DEFAULT VOLUME_MIXER_TYPE_ALSA -#define VOLUME_MIXER_DEVICE_DEFAULT VOLUME_MIXER_ALSA_DEFAULT -#else -#define VOLUME_MIXER_TYPE_DEFAULT VOLUME_MIXER_TYPE_SOFTWARE -#define VOLUME_MIXER_DEVICE_DEFAULT VOLUME_MIXER_SOFTWARE_DEFAULT -#endif -#endif - -static int volume_mixerType = VOLUME_MIXER_TYPE_DEFAULT; -static char *volume_mixerDevice = VOLUME_MIXER_DEVICE_DEFAULT; - -static int volume_softwareSet = 100; - -#ifdef HAVE_OSS -static int volume_ossFd = -1; -static int volume_ossControl = SOUND_MIXER_PCM; -#endif - -#ifdef HAVE_ALSA -static snd_mixer_t *volume_alsaMixerHandle; -static snd_mixer_elem_t *volume_alsaElem; -static long volume_alsaMin; -static long volume_alsaMax; -static int volume_alsaSet = -1; -#endif - -#ifdef HAVE_OSS - -static void closeOssMixer(void) -{ - while (close(volume_ossFd) && errno == EINTR) ; - volume_ossFd = -1; -} - -static int prepOssMixer(char *device) -{ - ConfigParam *param; - - if ((volume_ossFd = open(device, O_RDONLY)) < 0) { - WARNING("unable to open oss mixer \"%s\"\n", device); - return -1; - } - - param = getConfigParam(CONF_MIXER_CONTROL); - - if (param) { - char *labels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS; - char *dup; - int i, j; - int devmask = 0; - - if (ioctl(volume_ossFd, SOUND_MIXER_READ_DEVMASK, &devmask) < 0) { - WARNING("errors getting read_devmask for oss mixer\n"); - closeOssMixer(); - return -1; - } - - for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { - dup = xstrdup(labels[i]); - /* eliminate spaces at the end */ - j = strlen(dup) - 1; - while (j >= 0 && dup[j] == ' ') - dup[j--] = '\0'; - if (strcasecmp(dup, param->value) == 0) { - free(dup); - break; - } - free(dup); - } - - if (i >= SOUND_MIXER_NRDEVICES) { - WARNING("mixer control \"%s\" not found at line %i\n", - param->value, param->line); - closeOssMixer(); - return -1; - } else if (!((1 << i) & devmask)) { - WARNING("mixer control \"%s\" not usable at line %i\n", - param->value, param->line); - closeOssMixer(); - return -1; - } - - volume_ossControl = i; - } - - return 0; -} - -static int ensure_oss_open(void) -{ - if ((volume_ossFd < 0 && prepOssMixer(volume_mixerDevice) < 0)) - return -1; - return 0; -} - -static int getOssVolumeLevel(void) -{ - int left, right, level; - - if (ensure_oss_open() < 0) - return -1; - - if (ioctl(volume_ossFd, MIXER_READ(volume_ossControl), &level) < 0) { - closeOssMixer(); - WARNING("unable to read volume\n"); - return -1; - } - - left = level & 0xff; - right = (level & 0xff00) >> 8; - - if (left != right) { - WARNING("volume for left and right is not the same, \"%i\" and " - "\"%i\"\n", left, right); - } - - return left; -} - -static int changeOssVolumeLevel(int fd, int change, int rel) -{ - int current; - int new; - int level; - - if (rel) { - if ((current = getOssVolumeLevel()) < 0) { - commandError(fd, ACK_ERROR_SYSTEM, - "problem getting current volume"); - return -1; - } - - new = current + change; - } else { - if (ensure_oss_open() < 0) - return -1; - new = change; - } - - if (new < 0) - new = 0; - else if (new > 100) - new = 100; - - level = (new << 8) + new; - - if (ioctl(volume_ossFd, MIXER_WRITE(volume_ossControl), &level) < 0) { - closeOssMixer(); - commandError(fd, ACK_ERROR_SYSTEM, "problems setting volume"); - return -1; - } - - return 0; -} -#endif - -#ifdef HAVE_ALSA -static void closeAlsaMixer(void) -{ - snd_mixer_close(volume_alsaMixerHandle); - volume_alsaMixerHandle = NULL; -} - -static int prepAlsaMixer(char *card) -{ - int err; - snd_mixer_elem_t *elem; - char *controlName = VOLUME_MIXER_ALSA_CONTROL_DEFAULT; - ConfigParam *param; - - err = snd_mixer_open(&volume_alsaMixerHandle, 0); - snd_config_update_free_global(); - if (err < 0) { - WARNING("problems opening alsa mixer: %s\n", snd_strerror(err)); - return -1; - } - - if ((err = snd_mixer_attach(volume_alsaMixerHandle, card)) < 0) { - closeAlsaMixer(); - WARNING("problems attaching alsa mixer: %s\n", - snd_strerror(err)); - return -1; - } - - if ((err = - snd_mixer_selem_register(volume_alsaMixerHandle, NULL, - NULL)) < 0) { - closeAlsaMixer(); - WARNING("problems snd_mixer_selem_register'ing: %s\n", - snd_strerror(err)); - return -1; - } - - if ((err = snd_mixer_load(volume_alsaMixerHandle)) < 0) { - closeAlsaMixer(); - WARNING("problems snd_mixer_selem_register'ing: %s\n", - snd_strerror(err)); - return -1; - } - - elem = snd_mixer_first_elem(volume_alsaMixerHandle); - - param = getConfigParam(CONF_MIXER_CONTROL); - - if (param) { - controlName = param->value; - } - - while (elem) { - if (snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE) { - if (strcasecmp(controlName, - snd_mixer_selem_get_name(elem)) == 0) { - break; - } - } - elem = snd_mixer_elem_next(elem); - } - - if (elem) { - volume_alsaElem = elem; - snd_mixer_selem_get_playback_volume_range(volume_alsaElem, - &volume_alsaMin, - &volume_alsaMax); - return 0; - } - - WARNING("can't find alsa mixer_control \"%s\"\n", controlName); - - closeAlsaMixer(); - return -1; -} - -static int prep_alsa_get_level(long *level) -{ - const char *cmd; - int err; - - if (!volume_alsaMixerHandle && prepAlsaMixer(volume_mixerDevice) < 0) - return -1; - - if ((err = snd_mixer_handle_events(volume_alsaMixerHandle)) < 0) { - cmd = "handle_events"; - goto error; - } - if ((err = snd_mixer_selem_get_playback_volume(volume_alsaElem, - SND_MIXER_SCHN_FRONT_LEFT, - level)) < 0) { - cmd = "selem_get_playback_volume"; - goto error; - } - return 0; - -error: - WARNING("problems getting alsa volume: %s (snd_mixer_%s)\n", - snd_strerror(err), cmd); - closeAlsaMixer(); - return -1; -} - -static int getAlsaVolumeLevel(void) -{ - int ret; - long level; - long max = volume_alsaMax; - long min = volume_alsaMin; - - if (prep_alsa_get_level(&level) < 0) - return -1; - - ret = ((volume_alsaSet / 100.0) * (max - min) + min) + 0.5; - if (volume_alsaSet > 0 && ret == level) { - ret = volume_alsaSet; - } else - ret = (int)(100 * (((float)(level - min)) / (max - min)) + 0.5); - - return ret; -} - -static int changeAlsaVolumeLevel(int fd, int change, int rel) -{ - float vol; - long level; - long test; - long max = volume_alsaMax; - long min = volume_alsaMin; - int err; - - if (prep_alsa_get_level(&level) < 0) - return -1; - - if (rel) { - test = ((volume_alsaSet / 100.0) * (max - min) + min) + 0.5; - if (volume_alsaSet >= 0 && level == test) { - vol = volume_alsaSet; - } else - vol = 100.0 * (((float)(level - min)) / (max - min)); - vol += change; - } else - vol = change; - - volume_alsaSet = vol + 0.5; - volume_alsaSet = volume_alsaSet > 100 ? 100 : - (volume_alsaSet < 0 ? 0 : volume_alsaSet); - - level = (long)(((vol / 100.0) * (max - min) + min) + 0.5); - level = level > max ? max : level; - level = level < min ? min : level; - - if ((err = - snd_mixer_selem_set_playback_volume_all(volume_alsaElem, - level)) < 0) { - commandError(fd, ACK_ERROR_SYSTEM, "problems setting volume"); - WARNING("problems setting alsa volume: %s\n", - snd_strerror(err)); - closeAlsaMixer(); - return -1; - } - - return 0; -} -#endif - -static int prepMixer(char *device) -{ - switch (volume_mixerType) { -#ifdef HAVE_ALSA - case VOLUME_MIXER_TYPE_ALSA: - return prepAlsaMixer(device); -#endif -#ifdef HAVE_OSS - case VOLUME_MIXER_TYPE_OSS: - return prepOssMixer(device); -#endif - } - - return 0; -} - -void finishVolume(void) -{ - switch (volume_mixerType) { -#ifdef HAVE_ALSA - case VOLUME_MIXER_TYPE_ALSA: - closeAlsaMixer(); - break; -#endif -#ifdef HAVE_OSS - case VOLUME_MIXER_TYPE_OSS: - closeOssMixer(); - break; -#endif - } -} - -void initVolume(void) -{ - ConfigParam *param = getConfigParam(CONF_MIXER_TYPE); - - if (param) { - if (0) ; -#ifdef HAVE_ALSA - else if (strcmp(param->value, VOLUME_MIXER_ALSA) == 0) { - volume_mixerType = VOLUME_MIXER_TYPE_ALSA; - volume_mixerDevice = VOLUME_MIXER_ALSA_DEFAULT; - } -#endif -#ifdef HAVE_OSS - else if (strcmp(param->value, VOLUME_MIXER_OSS) == 0) { - volume_mixerType = VOLUME_MIXER_TYPE_OSS; - volume_mixerDevice = VOLUME_MIXER_OSS_DEFAULT; - } -#endif - else if (strcmp(param->value, VOLUME_MIXER_SOFTWARE) == 0) { - volume_mixerType = VOLUME_MIXER_TYPE_SOFTWARE; - volume_mixerDevice = VOLUME_MIXER_SOFTWARE_DEFAULT; - } else { - FATAL("unknown mixer type %s at line %i\n", - param->value, param->line); - } - } - - param = getConfigParam(CONF_MIXER_DEVICE); - - if (param) { - volume_mixerDevice = param->value; - } -} - -void openVolumeDevice(void) -{ - if (prepMixer(volume_mixerDevice) < 0) { - WARNING("using software volume\n"); - volume_mixerType = VOLUME_MIXER_TYPE_SOFTWARE; - } -} - -static int getSoftwareVolume(void) -{ - return volume_softwareSet; -} - -int getVolumeLevel(void) -{ - switch (volume_mixerType) { -#ifdef HAVE_ALSA - case VOLUME_MIXER_TYPE_ALSA: - return getAlsaVolumeLevel(); -#endif -#ifdef HAVE_OSS - case VOLUME_MIXER_TYPE_OSS: - return getOssVolumeLevel(); -#endif - case VOLUME_MIXER_TYPE_SOFTWARE: - return getSoftwareVolume(); - default: - return -1; - } -} - -static int changeSoftwareVolume(int fd, int change, int rel) -{ - int new = change; - - if (rel) - new += volume_softwareSet; - - if (new > 100) - new = 100; - else if (new < 0) - new = 0; - - volume_softwareSet = new; - - /*new = 100.0*(exp(new/50.0)-1)/(M_E*M_E-1)+0.5; */ - if (new >= 100) - new = 1000; - else if (new <= 0) - new = 0; - else - new = - 1000.0 * (exp(new / 25.0) - 1) / (54.5981500331F - 1) + 0.5; - - setPlayerSoftwareVolume(new); - - return 0; -} - -int changeVolumeLevel(int fd, int change, int rel) -{ - switch (volume_mixerType) { -#ifdef HAVE_ALSA - case VOLUME_MIXER_TYPE_ALSA: - return changeAlsaVolumeLevel(fd, change, rel); -#endif -#ifdef HAVE_OSS - case VOLUME_MIXER_TYPE_OSS: - return changeOssVolumeLevel(fd, change, rel); -#endif - case VOLUME_MIXER_TYPE_SOFTWARE: - return changeSoftwareVolume(fd, change, rel); - default: - return 0; - break; - } -} - -void read_sw_volume_state(FILE *fp) -{ - /* strlen(SW_VOLUME_STATE) + strlen('100') + '\0' */ - #define bufsize 16 - char buf[bufsize]; - const size_t len = strlen(SW_VOLUME_STATE); - char *end = NULL; - long int sv; - - if (volume_mixerType != VOLUME_MIXER_TYPE_SOFTWARE) - return; - while (myFgets(buf, bufsize, fp)) { - if (strncmp(buf, SW_VOLUME_STATE, len)) - continue; - sv = strtol(buf + len, &end, 10); - if (mpd_likely(!*end)) - changeSoftwareVolume(STDERR_FILENO, sv, 0); - else - ERROR("Can't parse software volume: %s\n", buf); - return; - } - #undef bufsize -} - -void save_sw_volume_state(FILE *fp) -{ - if (volume_mixerType == VOLUME_MIXER_TYPE_SOFTWARE) - fprintf(fp, SW_VOLUME_STATE "%d\n", volume_softwareSet); -} - |