commit e53212e85a71d831fff3bf61c792ed7235fa3a79
Author: Tomas Smetana <tsmetana@xxxxxxxxxxxxxxxxx>
Date: Mon May 11 16:24:09 2009 +0000
Added first version of the ALSA mixer patch. Unused yet.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
---
configure.ac | 12 ++-
src/Makefile.am | 15 ++-
src/commands.c | 8 +-
src/mixer-alsa.c | 240 +++++++++++++++++++++++++++++++++++++++++++++++
src/mixer-oss.c | 261 +++++++++++++++++++++++++++++++++++++++++++++++++++
src/mixer.c | 272 +++++++++++++++---------------------------------------
src/mixer.h | 31 +++++--
src/tvtime.c | 10 +-
src/videoinput.c | 6 +-
9 files changed, 628 insertions(+), 227 deletions(-)
create mode 100644 src/mixer-alsa.c
create mode 100644 src/mixer-oss.c
diff --git a/configure.ac b/configure.ac
index eac6c20..6cdedfb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,18 +76,26 @@ dnl ---------------------------------------------
dnl libxml2
dnl ---------------------------------------------
dnl Test for libxml2
-
AC_PATH_PROG(LIBXML2_CONFIG,xml2-config,no)
if test "$LIBXML2_CONFIG" = "no" ; then
AC_MSG_ERROR(libxml2 needed and xml2-config not found)
else
XML2_LIBS="`$LIBXML2_CONFIG --libs`"
XML2_FLAG="`$LIBXML2_CONFIG --cflags`"
- AC_DEFINE(HAVE_LIBXML2,,[LIBXML2 support])
+ AC_DEFINE(HAVE_LIBXML2,,[LIBXML2 support])
fi
AC_SUBST(XML2_LIBS)
AC_SUBST(XML2_FLAG)
+dnl ---------------------------------------------
+dnl libasound2
+dnl ---------------------------------------------
+dnl Test for ALSA
+AM_PATH_ALSA(1.0.9,
+ [ AC_DEFINE(HAVE_ALSA,1,[Define this if you have Alsa (libasound) installed]) ],
+ AC_MSG_RESULT(libasound needed and not found))
+AM_CONDITIONAL(HAVE_ALSA, test x"$no_alsa" != "yes")
+
dnl ---------------------------------------------
dnl asound
diff --git a/src/Makefile.am b/src/Makefile.am
index 3a38aac..56e26a6 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -29,6 +29,11 @@ OPT_CFLAGS = -Wall -pedantic -I. -DDATADIR="\"$(pkgdatadir)\"" \
-DCONFDIR="\"$(pkgsysconfdir)\"" -DFIFODIR="\"$(tmpdir)\"" \
-D_LARGEFILE64_SOURCE -DLOCALEDIR="\"$(localedir)\""
+if HAVE_ALSA
+ALSA_SRCS = mixer-alsa.c
+else
+ALSA_SRCS =
+endif
COMMON_SRCS = mixer.c videoinput.c rtctimer.c leetft.c osdtools.c tvtimeconf.c \
pngoutput.c tvtimeosd.c input.c cpu_accel.c speedy.c pnginput.c \
deinterlace.c videotools.c attributes.h deinterlace.h leetft.h \
@@ -40,7 +45,7 @@ COMMON_SRCS = mixer.c videoinput.c rtctimer.c leetft.c osdtools.c tvtimeconf.c \
utils.h utils.c pulldown.h pulldown.c hashtable.h hashtable.c \
cpuinfo.h cpuinfo.c menu.c menu.h \
outputfilter.h outputfilter.c xmltv.h xmltv.c gettext.h tvtimeglyphs.h \
- copyfunctions.h copyfunctions.c alsa_stream.c
+ copyfunctions.h copyfunctions.c alsa_stream.c mixer-oss.c $(ALSA_SRCS)
if ARCH_X86
DSCALER_SRCS = $(top_srcdir)/plugins/dscalerapi.h \
@@ -74,10 +79,10 @@ bin_PROGRAMS = tvtime tvtime-command tvtime-configure tvtime-scanner
tvtime_SOURCES = $(COMMON_SRCS) $(OUTPUT_SRCS) $(PLUGIN_SRCS) tvtime.c
tvtime_CFLAGS = $(TTF_CFLAGS) $(PNG_CFLAGS) $(OPT_CFLAGS) \
- $(PLUGIN_CFLAGS) $(X11_CFLAGS) $(XML2_FLAG) \
+ $(PLUGIN_CFLAGS) $(X11_CFLAGS) $(XML2_FLAG) $(ALSA_CFLAGS) \
$(FONT_CFLAGS) $(AM_CFLAGS)
tvtime_LDFLAGS = $(TTF_LIBS) $(ZLIB_LIBS) $(PNG_LIBS) \
- $(X11_LIBS) $(XML2_LIBS) $(ASOUND_LIBS) -lm -lstdc++
+ $(X11_LIBS) $(XML2_LIBS) $(ALSA_LIBS) -lm -lstdc++
tvtime_command_SOURCES = utils.h utils.c tvtimeconf.h tvtimeconf.c \
tvtime-command.c
@@ -90,6 +95,6 @@ tvtime_configure_LDFLAGS = $(ZLIB_LIBS) $(XML2_LIBS)
tvtime_scanner_SOURCES = utils.h utils.c videoinput.h videoinput.c \
tvtimeconf.h tvtimeconf.c station.h station.c tvtime-scanner.c \
mixer.h mixer.c
-tvtime_scanner_CFLAGS = $(OPT_CFLAGS) $(XML2_FLAG) $(AM_CFLAGS)
-tvtime_scanner_LDFLAGS = $(ZLIB_LIBS) $(XML2_LIBS)
+tvtime_scanner_CFLAGS = $(OPT_CFLAGS) $(XML2_FLAG) $(ALSA_CFLAGS) $(AM_CFLAGS)
+tvtime_scanner_LDFLAGS = $(ZLIB_LIBS) $(XML2_LIBS) $(ALSA_LIBS)
diff --git a/src/commands.c b/src/commands.c
index 964cab7..9141276 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -3012,10 +3012,10 @@ void commands_handle( commands_t *cmd, int tvtime_cmd, const char *arg )
break;
case TVTIME_MIXER_TOGGLE_MUTE:
- mixer_mute( !mixer_ismute() );
+ mixer->mute( !mixer->ismute() );
if( cmd->osd ) {
- tvtime_osd_show_data_bar( cmd->osd, _("Volume"), (mixer_get_volume()) & 0xff );
+ tvtime_osd_show_data_bar( cmd->osd, _("Volume"), (mixer->get_volume()) & 0xff );
}
break;
@@ -3029,9 +3029,9 @@ void commands_handle( commands_t *cmd, int tvtime_cmd, const char *arg )
/* Check to see if an argument was passed, if so, use it. */
if (atoi(arg) > 0) {
int perc = atoi(arg);
- volume = mixer_set_volume( ( (tvtime_cmd == TVTIME_MIXER_UP) ? perc : -perc ) );
+ volume = mixer->set_volume( ( (tvtime_cmd == TVTIME_MIXER_UP) ? perc : -perc ) );
} else {
- volume = mixer_set_volume( ( (tvtime_cmd == TVTIME_MIXER_UP) ? 1 : -1 ) );
+ volume = mixer->set_volume( ( (tvtime_cmd == TVTIME_MIXER_UP) ? 1 : -1 ) );
}
if( cmd->osd ) {
diff --git a/src/mixer-alsa.c b/src/mixer-alsa.c
new file mode 100644
index 0000000..635d44c
--- /dev/null
+++ b/src/mixer-alsa.c
@@ -0,0 +1,240 @@
+/**
+ * Copyright (C) 2006 Philipp Hahn <pmhahn@xxxxxxxxxxxxxxxxxxxxx>
+ *
+ * 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, 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 <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include <math.h>
+#include <alsa/asoundlib.h>
+#include "utils.h"
+#include "mixer.h"
+
+static const char alsa_core_devnames[] = "default";
+static char *card, *channel;
+static int muted = 0;
+static int mutecount = 0;
+static snd_mixer_t *handle = NULL;
+static snd_mixer_elem_t *elem = NULL;
+
+static long alsa_min, alsa_max, alsa_vol;
+
+static void alsa_open_mixer( void )
+{
+ int err;
+ static snd_mixer_selem_id_t *sid = NULL;
+ if ((err = snd_mixer_open (&handle, 0)) < 0) {
+ fprintf(stderr, "mixer: open error: %s\n", snd_strerror(err));
+ return;
+ }
+ if ((err = snd_mixer_attach (handle, card)) < 0) {
+ fprintf(stderr, "mixer: attach error: %s\n", snd_strerror(err));
+ goto error;
+ }
+ if ((err = snd_mixer_selem_register (handle, NULL, NULL)) < 0) {
+ fprintf(stderr, "mixer: register error: %s\n", snd_strerror(err));
+ goto error;
+ }
+ if ((err = snd_mixer_load (handle)) < 0) {
+ fprintf(stderr, "mixer: load error: %s\n", snd_strerror(err));
+ goto error;
+ }
+ snd_mixer_selem_id_malloc(&sid);
+ if (sid == NULL)
+ goto error;
+ snd_mixer_selem_id_set_name(sid, channel);
+ if (!(elem = snd_mixer_find_selem(handle, sid))) {
+ fprintf(stderr, "mixer: find error: %s\n", snd_strerror(err));
+ goto error;
+ }
+ if (!snd_mixer_selem_has_playback_volume(elem)) {
+ fprintf(stderr, "mixer: no playback\n");
+ goto error;
+ }
+ snd_mixer_selem_get_playback_volume_range(elem, &alsa_min, &alsa_max);
+ if ((alsa_max - alsa_min) <= 0) {
+ fprintf(stderr, "mixer: no valid playback range\n");
+ goto error;
+ }
+ snd_mixer_selem_id_free(sid);
+ return;
+
+error:
+ if (sid)
+ snd_mixer_selem_id_free(sid);
+ if (handle) {
+ snd_mixer_close(handle);
+ handle = NULL;
+ }
+ return;
+}
+
+/* Volume saved to file */
+static int alsa_get_unmute_volume( void )
+{
+ long val;
+ assert (elem);
+
+ if (snd_mixer_selem_is_playback_mono(elem)) {
+ snd_mixer_selem_get_playback_volume(elem, SND_MIXER_SCHN_MONO, &val);
+ return val;
+ } else {
+ int c, n = 0;
+ long sum = 0;
+ for (c = 0; c <= SND_MIXER_SCHN_LAST; c++) {
+ if (snd_mixer_selem_has_playback_channel(elem, c)) {
+ snd_mixer_selem_get_playback_volume(elem, SND_MIXER_SCHN_FRONT_LEFT, &val);
+ sum += val;
+ n++;
+ }
+ }
+ if (! n) {
+ return 0;
+ }
+
+ val = sum / n;
+ sum = (long)((double)(alsa_vol * (alsa_max - alsa_min)) / 100. + 0.5);
+
+ if (sum != val) {
+ alsa_vol = (long)(((val * 100.) / (alsa_max - alsa_min)) + 0.5);
+ }
+ return alsa_vol;
+ }
+}
+
+static int alsa_get_volume( void )
+{
+ if (muted)
+ return 0;
+ else
+ return alsa_get_unmute_volume();
+}
+
+static int alsa_set_volume( int percentdiff )
+{
+ long volume;
+
+ alsa_get_volume();
+
+ alsa_vol += percentdiff;
+ if( alsa_vol > 100 ) alsa_vol = 100;
+ if( alsa_vol < 0 ) alsa_vol = 0;
+
+ volume = (long)((alsa_vol * (alsa_max - alsa_min) / 100.) + 0.5);
+
+ snd_mixer_selem_set_playback_volume_all(elem, volume + alsa_min);
+ snd_mixer_selem_set_playback_switch_all(elem, 1);
+ muted = 0;
+ mutecount = 0;
+
+ return alsa_vol;
+}
+
+static void alsa_mute( int mute )
+{
+ /**
+ * Make sure that if multiple users mute the card,
+ * we only honour the last one.
+ */
+ if( !mute && mutecount ) mutecount--;
+ if( mutecount ) return;
+
+ if( mute ) {
+ mutecount++;
+ muted = 1;
+ if (snd_mixer_selem_has_playback_switch(elem))
+ snd_mixer_selem_set_playback_switch_all(elem, 0);
+ else
+ fprintf(stderr, "mixer: mute not implemented\n");
+ } else {
+ muted = 0;
+ if (snd_mixer_selem_has_playback_switch(elem))
+ snd_mixer_selem_set_playback_switch_all(elem, 1);
+ else
+ fprintf(stderr, "mixer: mute not implemented\n");
+ }
+}
+
+static int alsa_ismute( void )
+{
+ return muted;
+}
+
+static int alsa_set_device( const char *devname )
+{
+ int i;
+
+ if (card) free(card);
+ card = strdup( devname );
+ if( !card ) return -1;
+
+ i = strcspn( card, "/" );
+ if( i == strlen( card ) ) {
+ channel = "Line";
+ } else {
+ card[i] = 0;
+ channel = card + i + 1;
+ }
+ alsa_open_mixer();
+ if (!handle) {
+ fprintf( stderr, "mixer: Can't open mixer %s, "
+ "mixer volume and mute unavailable.\n", card );
+ return -1;
+ }
+ return 0;
+}
+
+static void alsa_set_state( int ismuted, int unmute_volume )
+{
+ /**
+ * 1. we come back unmuted: Don't touch anything
+ * 2. we don't have a saved volume: Don't touch anything
+ * 3. we come back muted and we have a saved volume:
+ * - if tvtime muted it, unmute to old volume
+ * - if user did it, remember that we're muted and old volume
+ */
+ if( alsa_get_volume() == 0 && unmute_volume > 0 ) {
+ snd_mixer_selem_set_playback_volume_all(elem, unmute_volume);
+ muted = 1;
+
+ if( !ismuted ) {
+ alsa_mute( 0 );
+ }
+ }
+}
+
+static void alsa_close_device( void )
+{
+ elem = NULL;
+ if (handle)
+ snd_mixer_close(handle);
+ handle = NULL;
+ muted = 0;
+ mutecount = 0;
+}
+
+struct mixer alsa_mixer = {
+ .set_device = alsa_set_device,
+ .set_state = alsa_set_state,
+ .get_volume = alsa_get_volume,
+ .get_unmute_volume = alsa_get_unmute_volume,
+ .set_volume = alsa_set_volume,
+ .mute = alsa_mute,
+ .ismute = alsa_ismute,
+ .close_device = alsa_close_device,
+};
+// vim: ts=4 sw=4 et foldmethod=marker
diff --git a/src/mixer-oss.c b/src/mixer-oss.c
new file mode 100644
index 0000000..08aa0ca
--- /dev/null
+++ b/src/mixer-oss.c
@@ -0,0 +1,261 @@
+/**
+ * Copyright (C) 2002, 2003 Doug Bell <drbell@xxxxxxxxxxxxxxxxxxxxx>
+ *
+ * Some mixer routines from mplayer, http://mplayer.sourceforge.net.
+ * Copyright (C) 2000-2002. by A'rpi/ESP-team & others
+ *
+ * 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, 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 <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/soundcard.h>
+#include <sys/mman.h>
+#include <string.h>
+#include "utils.h"
+#include "mixer.h"
+
+static char *mixer_device = "/dev/mixer";
+static int saved_volume = (50 << 8 & 0xFF00) | (50 & 0x00FF);
+static int mixer_channel = SOUND_MIXER_LINE;
+static int mixer_dev_mask = 1 << SOUND_MIXER_LINE;
+static int muted = 0;
+static int mutecount = 0;
+static int fd = -1;
+
+static int oss_get_volume( void )
+{
+ int v, cmd, devs;
+ int curvol = 0;
+
+ if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
+ if( fd != -1 ) {
+
+ ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
+ if( devs & mixer_dev_mask ) {
+ cmd = MIXER_READ( mixer_channel );
+ } else {
+ return curvol;
+ }
+
+ ioctl( fd, cmd, &v );
+ curvol = ( v & 0xFF00 ) >> 8;
+ }
+
+ return curvol;
+}
+
+static int oss_get_unmute_volume( void )
+{
+ if( muted ) {
+ return saved_volume;
+ } else {
+ int v, cmd, devs;
+
+ if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
+ if( fd != -1 ) {
+
+ ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
+ if( devs & mixer_dev_mask ) {
+ cmd = MIXER_READ( mixer_channel );
+ } else {
+ return -1;
+ }
+
+ ioctl( fd, cmd, &v );
+ return v;
+ }
+ }
+
+ return -1;
+}
+
+static int oss_set_volume( int percentdiff )
+{
+ int v, cmd, devs, levelpercentage;
+
+ levelpercentage = oss_get_volume();
+
+ levelpercentage += percentdiff;
+ if( levelpercentage > 100 ) levelpercentage = 100;
+ if( levelpercentage < 0 ) levelpercentage = 0;
+
+ if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
+ if( fd != -1 ) {
+ ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
+ if( devs & mixer_dev_mask ) {
+ cmd = MIXER_WRITE( mixer_channel );
+ } else {
+ return 0;
+ }
+
+ v = ( levelpercentage << 8 ) | levelpercentage;
+ ioctl( fd, cmd, &v );
+ muted = 0;
+ mutecount = 0;
+ return v;
+ }
+
+ return 0;
+}
+
+static void oss_mute( int mute )
+{
+ int v, cmd, devs;
+
+ /**
+ * Make sure that if multiple users mute the card,
+ * we only honour the last one.
+ */
+ if( !mute && mutecount ) mutecount--;
+ if( mutecount ) return;
+
+ if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
+
+ if( mute ) {
+ mutecount++;
+ if( fd != -1 ) {
+
+ /* Save volume */
+ ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
+ if( devs & mixer_dev_mask ) {
+ cmd = MIXER_READ( mixer_channel );
+ } else {
+ return;
+ }
+
+ ioctl( fd,cmd,&v );
+ saved_volume = v;
+
+ /* Now set volume to 0 */
+ ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
+ if( devs & mixer_dev_mask ) {
+ cmd = MIXER_WRITE( mixer_channel );
+ } else {
+ return;
+ }
+
+ v = 0;
+ ioctl( fd, cmd, &v );
+
+ muted = 1;
+ return;
+ }
+ } else {
+ if( fd != -1 ) {
+ ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
+ if( devs & mixer_dev_mask ) {
+ cmd = MIXER_WRITE( mixer_channel );
+ } else {
+ return;
+ }
+
+ v = saved_volume;
+ ioctl( fd, cmd, &v );
+ muted = 0;
+ return;
+ }
+ }
+}
+
+static int oss_ismute( void )
+{
+ return muted;
+}
+
+static char *oss_core_devnames[] = SOUND_DEVICE_NAMES;
+
+static int oss_set_device( const char *devname )
+{
+ const char *channame;
+ int found = 0;
+ int i;
+
+ mixer_device = strdup( devname );
+ if( !mixer_device ) return -1;
+
+ i = strcspn( mixer_device, ":" );
+ if( i == strlen( mixer_device ) ) {
+ channame = "line";
+ } else {
+ mixer_device[ i ] = 0;
+ channame = mixer_device + i + 1;
+ }
+ if( !file_is_openable_for_read( mixer_device ) ) {
+ fprintf( stderr, "mixer: Can't open device %s, "
+ "mixer volume and mute unavailable.\n", mixer_device );
+ return -1;
+ }
+
+ mixer_channel = SOUND_MIXER_LINE;
+ for( i = 0; i < SOUND_MIXER_NRDEVICES; i++ ) {
+ if( !strcasecmp( channame, oss_core_devnames[ i ] ) ) {
+ mixer_channel = i;
+ found = 1;
+ break;
+ }
+ }
+ if( !found ) {
+ fprintf( stderr, "mixer: No such mixer channel '%s', using channel 'line'.\n", channame );
+ return -1;
+ }
+ mixer_dev_mask = 1 << mixer_channel;
+ return 0;
+}
+
+static void oss_set_state( int ismuted, int unmute_volume )
+{
+ /**
+ * 1. we come back unmuted: Don't touch anything
+ * 2. we don't have a saved volume: Don't touch anything
+ * 3. we come back muted and we have a saved volume:
+ * - if tvtime muted it, unmute to old volume
+ * - if user did it, remember that we're muted and old volume
+ */
+ if( oss_get_volume() == 0 && unmute_volume > 0 ) {
+ saved_volume = unmute_volume;
+ muted = 1;
+
+ if( !ismuted ) {
+ oss_mute( 0 );
+ }
+ }
+}
+
+static void oss_close_device( void )
+{
+ if( fd >= 0 ) close( fd );
+ saved_volume = (50 << 8 & 0xFF00) | (50 & 0x00FF);
+ mixer_channel = SOUND_MIXER_LINE;
+ mixer_dev_mask = 1 << SOUND_MIXER_LINE;
+ muted = 0;
+ mutecount = 0;
+ fd = -1;
+}
+
+struct mixer oss_mixer = {
+ .set_device = oss_set_device,
+ .set_state = oss_set_state,
+ .get_volume = oss_get_volume,
+ .get_unmute_volume = oss_get_unmute_volume,
+ .set_volume = oss_set_volume,
+ .mute = oss_mute,
+ .ismute = oss_ismute,
+ .close_device = oss_close_device,
+};
diff --git a/src/mixer.c b/src/mixer.c
index bd2e5d9..901ef78 100644
--- a/src/mixer.c
+++ b/src/mixer.c
@@ -19,230 +19,104 @@
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <sys/soundcard.h>
-#include <sys/mman.h>
-#include <string.h>
-#include "utils.h"
#include "mixer.h"
-static char *mixer_device = "/dev/mixer";
-static int saved_volume = (50 << 8 & 0xFF00) | (50 & 0x00FF);
-static int mixer_channel = SOUND_MIXER_LINE;
-static int mixer_dev_mask = 1 << SOUND_MIXER_LINE;
-static int muted = 0;
-static int mutecount = 0;
-static int fd = -1;
-
-int mixer_get_volume( void )
+/**
+ * Sets the mixer device and channel.
+ */
+static int null_set_device( const char *devname )
{
- int v, cmd, devs;
- int curvol = 0;
-
- if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
- if( fd != -1 ) {
-
- ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
- if( devs & mixer_dev_mask ) {
- cmd = MIXER_READ( mixer_channel );
- } else {
- return curvol;
- }
-
- ioctl( fd, cmd, &v );
- curvol = ( v & 0xFF00 ) >> 8;
- }
-
- return curvol;
+ return 0;
}
-int mixer_get_unmute_volume( void )
+/**
+ * Sets the initial state of the mixer device.
+ */
+static void null_set_state( int ismuted, int unmute_volume )
{
- if( muted ) {
- return saved_volume;
- } else {
- int v, cmd, devs;
-
- if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
- if( fd != -1 ) {
-
- ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
- if( devs & mixer_dev_mask ) {
- cmd = MIXER_READ( mixer_channel );
- } else {
- return -1;
- }
-
- ioctl( fd, cmd, &v );
- return v;
- }
- }
-
- return -1;
}
-int mixer_set_volume( int percentdiff )
+/**
+ * Returns the current volume setting.
+ */
+static int null_get_volume( void )
{
- int v, cmd, devs, levelpercentage;
-
- levelpercentage = mixer_get_volume();
-
- levelpercentage += percentdiff;
- if( levelpercentage > 100 ) levelpercentage = 100;
- if( levelpercentage < 0 ) levelpercentage = 0;
-
- if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
- if( fd != -1 ) {
- ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
- if( devs & mixer_dev_mask ) {
- cmd = MIXER_WRITE( mixer_channel );
- } else {
- return 0;
- }
-
- v = ( levelpercentage << 8 ) | levelpercentage;
- ioctl( fd, cmd, &v );
- muted = 0;
- mutecount = 0;
- return v;
- }
-
return 0;
}
-void mixer_mute( int mute )
+/**
+ * Returns the volume that would be used to restore the unmute state.
+ */
+static int null_get_unmute_volume( void )
{
- int v, cmd, devs;
-
- /**
- * Make sure that if multiple users mute the card,
- * we only honour the last one.
- */
- if( !mute && mutecount ) mutecount--;
- if( mutecount ) return;
-
- if( fd < 0 ) fd = open( mixer_device, O_RDONLY );
-
- if( mute ) {
- mutecount++;
- if( fd != -1 ) {
-
- /* Save volume */
- ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
- if( devs & mixer_dev_mask ) {
- cmd = MIXER_READ( mixer_channel );
- } else {
- return;
- }
-
- ioctl( fd,cmd,&v );
- saved_volume = v;
-
- /* Now set volume to 0 */
- ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
- if( devs & mixer_dev_mask ) {
- cmd = MIXER_WRITE( mixer_channel );
- } else {
- return;
- }
+ return 0;
+}
- v = 0;
- ioctl( fd, cmd, &v );
+/**
+ * Tunes the relative volume.
+ */
+static int null_set_volume( int percentdiff )
+{
+ return 0;
+}
- muted = 1;
- return;
- }
- } else {
- if( fd != -1 ) {
- ioctl( fd, SOUND_MIXER_READ_DEVMASK, &devs );
- if( devs & mixer_dev_mask ) {
- cmd = MIXER_WRITE( mixer_channel );
- } else {
- return;
- }
+/**
+ * Sets the mute state.
+ */
+static void null_mute( int mute )
+{
+}
- v = saved_volume;
- ioctl( fd, cmd, &v );
- muted = 0;
- return;
- }
- }
+/**
+ * Returns true if the mixer is muted.
+ */
+static int null_ismute( void )
+{
+ return 0;
}
-int mixer_ismute( void )
+/**
+ * Closes the mixer device if it is open.
+ */
+static void null_close_device( void )
{
- return muted;
}
-static char *oss_core_devnames[] = SOUND_DEVICE_NAMES;
+/* The null device, which always works. */
+static struct mixer null_mixer = {
+ .set_device = null_set_device,
+ .set_state = null_set_state,
+ .get_volume = null_get_volume,
+ .get_unmute_volume = null_get_unmute_volume,
+ .set_volume = null_set_volume,
+ .mute = null_mute,
+ .ismute = null_ismute,
+ .close_device = null_close_device,
+};
+
+/* List of all available access methods.
+ * Uses weak symbols: NULL is not linked in. */
+static struct mixer *mixers[] = {
+ &alsa_mixer,
+ &oss_mixer,
+ &null_mixer /* LAST */
+};
+/* The actual access method. */
+struct mixer *mixer = &null_mixer;
+/**
+ * Sets the mixer device and channel.
+ * Try each access method until one succeeds.
+ */
void mixer_set_device( const char *devname )
{
- const char *channame;
- int found = 0;
int i;
-
- mixer_device = strdup( devname );
- if( !mixer_device ) return;
-
- i = strcspn( mixer_device, ":" );
- if( i == strlen( mixer_device ) ) {
- channame = "line";
- } else {
- mixer_device[ i ] = 0;
- channame = mixer_device + i + 1;
- }
- if( !file_is_openable_for_read( mixer_device ) ) {
- fprintf( stderr, "mixer: Can't open device %s, "
- "mixer volume and mute unavailable.\n", mixer_device );
- }
-
- mixer_channel = SOUND_MIXER_LINE;
- for( i = 0; i < SOUND_MIXER_NRDEVICES; i++ ) {
- if( !strcasecmp( channame, oss_core_devnames[ i ] ) ) {
- mixer_channel = i;
- found = 1;
+ mixer->close_device();
+ for (i = 0; i < sizeof(mixers)/sizeof(mixers[0]); i++) {
+ mixer = mixers[i];
+ if (!mixer)
+ continue;
+ if (mixer->set_device(devname) == 0)
break;
- }
- }
- if( !found ) {
- fprintf( stderr, "mixer: No such mixer channel '%s', using channel 'line'.\n", channame );
- }
- mixer_dev_mask = 1 << mixer_channel;
-}
-
-void mixer_set_state( int ismuted, int unmute_volume )
-{
- /**
- * 1. we come back unmuted: Don't touch anything
- * 2. we don't have a saved volume: Don't touch anything
- * 3. we come back muted and we have a saved volume:
- * - if tvtime muted it, unmute to old volume
- * - if user did it, remember that we're muted and old volume
- */
- if( mixer_get_volume() == 0 && unmute_volume > 0 ) {
- saved_volume = unmute_volume;
- muted = 1;
-
- if( !ismuted ) {
- mixer_mute( 0 );
- }
}
}
-
-void mixer_close_device( void )
-{
- if( fd >= 0 ) close( fd );
- saved_volume = (50 << 8 & 0xFF00) | (50 & 0x00FF);
- mixer_channel = SOUND_MIXER_LINE;
- mixer_dev_mask = 1 << SOUND_MIXER_LINE;
- muted = 0;
- mutecount = 0;
- fd = -1;
-}
-
diff --git a/src/mixer.h b/src/mixer.h
index 07923f4..a26fc88 100644
--- a/src/mixer.h
+++ b/src/mixer.h
@@ -27,45 +27,58 @@ extern "C" {
#endif
/**
- * Sets the mixer device and channel. The device name is of the form
- * devicename:channelname. The default is /dev/mixer:line.
+ * Sets the mixer device and channel.
+ * All interfaces are scanned until one succeeds.
*/
void mixer_set_device( const char *devname );
+struct mixer {
+/**
+ * Sets the mixer device and channel.
+ */
+int (* set_device)( const char *devname );
+
/**
* Sets the initial state of the mixer device.
*/
-void mixer_set_state( int ismuted, int unmute_volume );
+void (* set_state)( int ismuted, int unmute_volume );
/**
* Returns the current volume setting.
*/
-int mixer_get_volume( void );
+int (* get_volume)( void );
/**
* Returns the volume that would be used to restore the unmute state.
*/
-int mixer_get_unmute_volume( void );
+int (* get_unmute_volume)( void );
/**
* Tunes the relative volume.
*/
-int mixer_set_volume( int percentdiff );
+int (* set_volume)( int percentdiff );
/**
* Sets the mute state.
*/
-void mixer_mute( int mute );
+void (* mute)( int mute );
/**
* Returns true if the mixer is muted.
*/
-int mixer_ismute( void );
+int (* ismute)( void );
/**
* Closes the mixer device if it is open.
*/
-void mixer_close_device( void );
+void (* close_device)( void );
+};
+
+#pragma weak alsa_mixer
+extern struct mixer alsa_mixer;
+#pragma weak oss_mixer
+extern struct mixer oss_mixer;
+extern struct mixer *mixer;
#ifdef __cplusplus
};
diff --git a/src/tvtime.c b/src/tvtime.c
index d9066cc..3d42d53 100644
--- a/src/tvtime.c
+++ b/src/tvtime.c
@@ -1430,7 +1430,7 @@ int tvtime_main( rtctimer_t *rtctimer, int read_stdin, int realtime,
/* Set the mixer device. */
mixer_set_device( config_get_mixer_device( ct ) );
- mixer_set_state( config_get_muted( ct ), config_get_unmute_volume( ct ) );
+ mixer->set_state( config_get_muted( ct ), config_get_unmute_volume( ct ) );
/* Setup OSD stuff. */
pixel_aspect = ( (double) width ) /
@@ -2555,14 +2555,14 @@ int tvtime_main( rtctimer_t *rtctimer, int read_stdin, int realtime,
snprintf( number, 4, "%d", quiet_screenshots );
config_save( ct, "QuietScreenshots", number );
- snprintf( number, 6, "%d", mixer_get_unmute_volume() );
+ snprintf( number, 6, "%d", mixer->get_unmute_volume() );
config_save( ct, "UnmuteVolume", number );
- snprintf( number, 4, "%d", mixer_ismute() );
+ snprintf( number, 4, "%d", mixer->ismute() );
config_save( ct, "Muted", number );
if( config_get_mute_on_exit( ct ) ) {
- mixer_mute( 1 );
+ mixer->mute( 1 );
}
if( vidin ) {
@@ -2599,7 +2599,7 @@ int tvtime_main( rtctimer_t *rtctimer, int read_stdin, int realtime,
if( osd ) {
tvtime_osd_delete( osd );
}
- mixer_close_device();
+ mixer->close_device();
/* Free temporary memory. */
free( colourbars );
diff --git a/src/videoinput.c b/src/videoinput.c
index dd60334..2102b04 100644
--- a/src/videoinput.c
+++ b/src/videoinput.c
@@ -760,7 +760,7 @@ void videoinput_set_tuner_freq( videoinput_t *vidin, int freqKHz )
}
vidin->change_muted = 1;
- mixer_mute( 1 );
+ mixer->mute( 1 );
videoinput_do_mute( vidin, vidin->user_muted || vidin->change_muted );
vidin->cur_tuner_state = TUNER_STATE_SIGNAL_DETECTED;
vidin->signal_acquire_wait = SIGNAL_ACQUIRE_DELAY;
@@ -931,7 +931,7 @@ int videoinput_check_for_signal( videoinput_t *vidin, int check_freq_present )
if( vidin->change_muted ) {
vidin->change_muted = 0;
videoinput_do_mute( vidin, vidin->user_muted || vidin->change_muted );
- mixer_mute( 0 );
+ mixer->mute( 0 );
}
break;
}
@@ -942,7 +942,7 @@ int videoinput_check_for_signal( videoinput_t *vidin, int check_freq_present )
vidin->cur_tuner_state = TUNER_STATE_SIGNAL_LOST;
vidin->signal_recover_wait = SIGNAL_RECOVER_DELAY;
vidin->change_muted = 1;
- mixer_mute( 1 );
+ mixer->mute( 1 );
videoinput_do_mute( vidin, vidin->user_muted || vidin->change_muted );
case TUNER_STATE_SIGNAL_LOST:
if( vidin->signal_recover_wait ) {
--
1.7.6.1
--
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