--- a/src/java.desktop/unix/native/libjsound/PLATFORM_API_LinuxOS_ALSA_Ports.c Thu Mar 22 14:10:30 2018 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,724 +0,0 @@
-/*
- * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-#define USE_ERROR
-//#define USE_TRACE
-
-#include "Ports.h"
-#include "PLATFORM_API_LinuxOS_ALSA_CommonUtils.h"
-#include <alsa/asoundlib.h>
-
-#if USE_PORTS == TRUE
-
-#define MAX_ELEMS (300)
-#define MAX_CONTROLS (MAX_ELEMS * 4)
-
-#define CHANNELS_MONO (SND_MIXER_SCHN_LAST + 1)
-#define CHANNELS_STEREO (SND_MIXER_SCHN_LAST + 2)
-
-typedef struct {
- snd_mixer_elem_t* elem;
- INT32 portType; /* one of PORT_XXX_xx */
- char* controlType; /* one of CONTROL_TYPE_xx */
- /* Values: either SND_MIXER_SCHN_FRONT_xx, CHANNELS_MONO or CHANNELS_STEREO.
- For SND_MIXER_SCHN_FRONT_xx, exactly this channel is set/retrieved directly.
- For CHANNELS_MONO, ALSA channel SND_MIXER_SCHN_MONO is set/retrieved directly.
- For CHANNELS_STEREO, ALSA channels SND_MIXER_SCHN_FRONT_LEFT and SND_MIXER_SCHN_FRONT_RIGHT
- are set after a calculation that takes balance into account. Retrieved? Average of both
- channels? (Using a cached value is not a good idea since the value in the HW may have been
- altered.) */
- INT32 channel;
-} PortControl;
-
-
-typedef struct tag_PortMixer {
- snd_mixer_t* mixer_handle;
- /* Number of array elements used in elems and types. */
- int numElems;
- snd_mixer_elem_t** elems;
- /* Array of port types (PORT_SRC_UNKNOWN etc.). Indices are the same as in elems. */
- INT32* types;
- /* Number of array elements used in controls. */
- int numControls;
- PortControl* controls;
-} PortMixer;
-
-
-///// implemented functions of Ports.h
-
-INT32 PORT_GetPortMixerCount() {
- INT32 mixerCount;
- int card;
- char devname[16];
- int err;
- snd_ctl_t *handle;
- snd_ctl_card_info_t* info;
-
- TRACE0("> PORT_GetPortMixerCount\n");
-
- initAlsaSupport();
-
- snd_ctl_card_info_malloc(&info);
- card = -1;
- mixerCount = 0;
- if (snd_card_next(&card) >= 0) {
- while (card >= 0) {
- sprintf(devname, ALSA_HARDWARE_CARD, card);
- TRACE1("PORT_GetPortMixerCount: Opening alsa device \"%s\"...\n", devname);
- err = snd_ctl_open(&handle, devname, 0);
- if (err < 0) {
- ERROR2("ERROR: snd_ctl_open, card=%d: %s\n", card, snd_strerror(err));
- } else {
- mixerCount++;
- snd_ctl_close(handle);
- }
- if (snd_card_next(&card) < 0) {
- break;
- }
- }
- }
- snd_ctl_card_info_free(info);
- TRACE0("< PORT_GetPortMixerCount\n");
- return mixerCount;
-}
-
-
-INT32 PORT_GetPortMixerDescription(INT32 mixerIndex, PortMixerDescription* description) {
- snd_ctl_t* handle;
- snd_ctl_card_info_t* card_info;
- char devname[16];
- int err;
- char buffer[100];
-
- TRACE0("> PORT_GetPortMixerDescription\n");
- snd_ctl_card_info_malloc(&card_info);
-
- sprintf(devname, ALSA_HARDWARE_CARD, (int) mixerIndex);
- TRACE1("Opening alsa device \"%s\"...\n", devname);
- err = snd_ctl_open(&handle, devname, 0);
- if (err < 0) {
- ERROR2("ERROR: snd_ctl_open, card=%d: %s\n", (int) mixerIndex, snd_strerror(err));
- return FALSE;
- }
- err = snd_ctl_card_info(handle, card_info);
- if (err < 0) {
- ERROR2("ERROR: snd_ctl_card_info, card=%d: %s\n", (int) mixerIndex, snd_strerror(err));
- }
- strncpy(description->name, snd_ctl_card_info_get_id(card_info), PORT_STRING_LENGTH - 1);
- sprintf(buffer, " [%s]", devname);
- strncat(description->name, buffer, PORT_STRING_LENGTH - 1 - strlen(description->name));
- strncpy(description->vendor, "ALSA (http://www.alsa-project.org)", PORT_STRING_LENGTH - 1);
- strncpy(description->description, snd_ctl_card_info_get_name(card_info), PORT_STRING_LENGTH - 1);
- strncat(description->description, ", ", PORT_STRING_LENGTH - 1 - strlen(description->description));
- strncat(description->description, snd_ctl_card_info_get_mixername(card_info), PORT_STRING_LENGTH - 1 - strlen(description->description));
- getALSAVersion(description->version, PORT_STRING_LENGTH - 1);
-
- snd_ctl_close(handle);
- snd_ctl_card_info_free(card_info);
- TRACE0("< PORT_GetPortMixerDescription\n");
- return TRUE;
-}
-
-
-void* PORT_Open(INT32 mixerIndex) {
- char devname[16];
- snd_mixer_t* mixer_handle;
- int err;
- PortMixer* handle;
-
- TRACE0("> PORT_Open\n");
- sprintf(devname, ALSA_HARDWARE_CARD, (int) mixerIndex);
- if ((err = snd_mixer_open(&mixer_handle, 0)) < 0) {
- ERROR2("Mixer %s open error: %s", devname, snd_strerror(err));
- return NULL;
- }
- if ((err = snd_mixer_attach(mixer_handle, devname)) < 0) {
- ERROR2("Mixer attach %s error: %s", devname, snd_strerror(err));
- snd_mixer_close(mixer_handle);
- return NULL;
- }
- if ((err = snd_mixer_selem_register(mixer_handle, NULL, NULL)) < 0) {
- ERROR1("Mixer register error: %s", snd_strerror(err));
- snd_mixer_close(mixer_handle);
- return NULL;
- }
- err = snd_mixer_load(mixer_handle);
- if (err < 0) {
- ERROR2("Mixer %s load error: %s", devname, snd_strerror(err));
- snd_mixer_close(mixer_handle);
- return NULL;
- }
- handle = (PortMixer*) calloc(1, sizeof(PortMixer));
- if (handle == NULL) {
- ERROR0("malloc() failed.");
- snd_mixer_close(mixer_handle);
- return NULL;
- }
- handle->numElems = 0;
- handle->elems = (snd_mixer_elem_t**) calloc(MAX_ELEMS, sizeof(snd_mixer_elem_t*));
- if (handle->elems == NULL) {
- ERROR0("malloc() failed.");
- snd_mixer_close(mixer_handle);
- free(handle);
- return NULL;
- }
- handle->types = (INT32*) calloc(MAX_ELEMS, sizeof(INT32));
- if (handle->types == NULL) {
- ERROR0("malloc() failed.");
- snd_mixer_close(mixer_handle);
- free(handle->elems);
- free(handle);
- return NULL;
- }
- handle->controls = (PortControl*) calloc(MAX_CONTROLS, sizeof(PortControl));
- if (handle->controls == NULL) {
- ERROR0("malloc() failed.");
- snd_mixer_close(mixer_handle);
- free(handle->elems);
- free(handle->types);
- free(handle);
- return NULL;
- }
- handle->mixer_handle = mixer_handle;
- // necessary to initialize data structures
- PORT_GetPortCount(handle);
- TRACE0("< PORT_Open\n");
- return handle;
-}
-
-
-void PORT_Close(void* id) {
- TRACE0("> PORT_Close\n");
- if (id != NULL) {
- PortMixer* handle = (PortMixer*) id;
- if (handle->mixer_handle != NULL) {
- snd_mixer_close(handle->mixer_handle);
- }
- if (handle->elems != NULL) {
- free(handle->elems);
- }
- if (handle->types != NULL) {
- free(handle->types);
- }
- if (handle->controls != NULL) {
- free(handle->controls);
- }
- free(handle);
- }
- TRACE0("< PORT_Close\n");
-}
-
-
-
-INT32 PORT_GetPortCount(void* id) {
- PortMixer* portMixer;
- snd_mixer_elem_t *elem;
-
- TRACE0("> PORT_GetPortCount\n");
- if (id == NULL) {
- // $$mp: Should become a descriptive error code (invalid handle).
- return -1;
- }
- portMixer = (PortMixer*) id;
- if (portMixer->numElems == 0) {
- for (elem = snd_mixer_first_elem(portMixer->mixer_handle); elem; elem = snd_mixer_elem_next(elem)) {
- if (!snd_mixer_selem_is_active(elem))
- continue;
- TRACE2("Simple mixer control '%s',%i\n",
- snd_mixer_selem_get_name(elem),
- snd_mixer_selem_get_index(elem));
- if (snd_mixer_selem_has_playback_volume(elem)) {
- portMixer->elems[portMixer->numElems] = elem;
- portMixer->types[portMixer->numElems] = PORT_DST_UNKNOWN;
- portMixer->numElems++;
- }
- // to prevent buffer overflow
- if (portMixer->numElems >= MAX_ELEMS) {
- break;
- }
- /* If an element has both playback an capture volume, it is put into the arrays
- twice. */
- if (snd_mixer_selem_has_capture_volume(elem)) {
- portMixer->elems[portMixer->numElems] = elem;
- portMixer->types[portMixer->numElems] = PORT_SRC_UNKNOWN;
- portMixer->numElems++;
- }
- // to prevent buffer overflow
- if (portMixer->numElems >= MAX_ELEMS) {
- break;
- }
- }
- }
- TRACE0("< PORT_GetPortCount\n");
- return portMixer->numElems;
-}
-
-
-INT32 PORT_GetPortType(void* id, INT32 portIndex) {
- PortMixer* portMixer;
- INT32 type;
- TRACE0("> PORT_GetPortType\n");
- if (id == NULL) {
- // $$mp: Should become a descriptive error code (invalid handle).
- return -1;
- }
- portMixer = (PortMixer*) id;
- if (portIndex < 0 || portIndex >= portMixer->numElems) {
- // $$mp: Should become a descriptive error code (index out of bounds).
- return -1;
- }
- type = portMixer->types[portIndex];
- TRACE0("< PORT_GetPortType\n");
- return type;
-}
-
-
-INT32 PORT_GetPortName(void* id, INT32 portIndex, char* name, INT32 len) {
- PortMixer* portMixer;
- const char* nam;
-
- TRACE0("> PORT_GetPortName\n");
- if (id == NULL) {
- // $$mp: Should become a descriptive error code (invalid handle).
- return -1;
- }
- portMixer = (PortMixer*) id;
- if (portIndex < 0 || portIndex >= portMixer->numElems) {
- // $$mp: Should become a descriptive error code (index out of bounds).
- return -1;
- }
- nam = snd_mixer_selem_get_name(portMixer->elems[portIndex]);
- strncpy(name, nam, len - 1);
- name[len - 1] = 0;
- TRACE0("< PORT_GetPortName\n");
- return TRUE;
-}
-
-
-static int isPlaybackFunction(INT32 portType) {
- return (portType & PORT_DST_MASK);
-}
-
-
-/* Sets portControl to a pointer to the next free array element in the PortControl (pointer)
- array of the passed portMixer. Returns TRUE if successful. May return FALSE if there is no
- free slot. In this case, portControl is not altered */
-static int getControlSlot(PortMixer* portMixer, PortControl** portControl) {
- if (portMixer->numControls >= MAX_CONTROLS) {
- return FALSE;
- } else {
- *portControl = &(portMixer->controls[portMixer->numControls]);
- portMixer->numControls++;
- return TRUE;
- }
-}
-
-
-/* Protect against illegal min-max values, preventing divisions by zero.
- */
-inline static long getRange(long min, long max) {
- if (max > min) {
- return max - min;
- } else {
- return 1;
- }
-}
-
-
-/* Idea: we may specify that if unit is an empty string, the values are linear and if unit is "dB",
- the values are logarithmic.
-*/
-static void* createVolumeControl(PortControlCreator* creator,
- PortControl* portControl,
- snd_mixer_elem_t* elem, int isPlayback) {
- void* control;
- float precision;
- long min, max;
-
- if (isPlayback) {
- snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
- } else {
- snd_mixer_selem_get_capture_volume_range(elem, &min, &max);
- }
- /* $$mp: The volume values retrieved with the ALSA API are strongly supposed to be logarithmic.
- So the following calculation is wrong. However, there is no correct calculation, since
- for equal-distant logarithmic steps, the precision expressed in linear varies over the
- scale. */
- precision = 1.0F / getRange(min, max);
- control = (creator->newFloatControl)(creator, portControl, CONTROL_TYPE_VOLUME, 0.0F, +1.0F, precision, "");
- return control;
-}
-
-
-void PORT_GetControls(void* id, INT32 portIndex, PortControlCreator* creator) {
- PortMixer* portMixer;
- snd_mixer_elem_t* elem;
- void* control;
- PortControl* portControl;
- void* controls[10];
- int numControls;
- char* portName;
- int isPlayback = 0;
- int isMono;
- int isStereo;
- char* type;
- snd_mixer_selem_channel_id_t channel;
- memset(controls, 0, sizeof(controls));
-
- TRACE0("> PORT_GetControls\n");
- if (id == NULL) {
- ERROR0("Invalid handle!");
- // $$mp: an error code should be returned.
- return;
- }
- portMixer = (PortMixer*) id;
- if (portIndex < 0 || portIndex >= portMixer->numElems) {
- ERROR0("Port index out of range!");
- // $$mp: an error code should be returned.
- return;
- }
- numControls = 0;
- elem = portMixer->elems[portIndex];
- if (snd_mixer_selem_has_playback_volume(elem) || snd_mixer_selem_has_capture_volume(elem)) {
- /* Since we've split/duplicated elements with both playback and capture on the recovery
- of elements, we now can assume that we handle only to deal with either playback or
- capture. */
- isPlayback = isPlaybackFunction(portMixer->types[portIndex]);
- isMono = (isPlayback && snd_mixer_selem_is_playback_mono(elem)) ||
- (!isPlayback && snd_mixer_selem_is_capture_mono(elem));
- isStereo = (isPlayback &&
- snd_mixer_selem_has_playback_channel(elem, SND_MIXER_SCHN_FRONT_LEFT) &&
- snd_mixer_selem_has_playback_channel(elem, SND_MIXER_SCHN_FRONT_RIGHT)) ||
- (!isPlayback &&
- snd_mixer_selem_has_capture_channel(elem, SND_MIXER_SCHN_FRONT_LEFT) &&
- snd_mixer_selem_has_capture_channel(elem, SND_MIXER_SCHN_FRONT_RIGHT));
- // single volume control
- if (isMono || isStereo) {
- if (getControlSlot(portMixer, &portControl)) {
- portControl->elem = elem;
- portControl->portType = portMixer->types[portIndex];
- portControl->controlType = CONTROL_TYPE_VOLUME;
- if (isMono) {
- portControl->channel = CHANNELS_MONO;
- } else {
- portControl->channel = CHANNELS_STEREO;
- }
- control = createVolumeControl(creator, portControl, elem, isPlayback);
- if (control != NULL) {
- controls[numControls++] = control;
- }
- }
- } else { // more than two channels, each channels has its own control.
- for (channel = SND_MIXER_SCHN_FRONT_LEFT; channel <= SND_MIXER_SCHN_LAST; channel++) {
- if ((isPlayback && snd_mixer_selem_has_playback_channel(elem, channel)) ||
- (!isPlayback && snd_mixer_selem_has_capture_channel(elem, channel))) {
- if (getControlSlot(portMixer, &portControl)) {
- portControl->elem = elem;
- portControl->portType = portMixer->types[portIndex];
- portControl->controlType = CONTROL_TYPE_VOLUME;
- portControl->channel = channel;
- control = createVolumeControl(creator, portControl, elem, isPlayback);
- // We wrap in a compound control to provide the channel name.
- if (control != NULL) {
- /* $$mp 2003-09-14: The following cast shouln't be necessary. Instead, the
- declaration of PORT_NewCompoundControlPtr in Ports.h should be changed
- to take a const char* parameter. */
- control = (creator->newCompoundControl)(creator, (char*) snd_mixer_selem_channel_name(channel), &control, 1);
- }
- if (control != NULL) {
- controls[numControls++] = control;
- }
- }
- }
- }
- }
- // BALANCE control
- if (isStereo) {
- if (getControlSlot(portMixer, &portControl)) {
- portControl->elem = elem;
- portControl->portType = portMixer->types[portIndex];
- portControl->controlType = CONTROL_TYPE_BALANCE;
- portControl->channel = CHANNELS_STEREO;
- /* $$mp: The value for precision is chosen more or less arbitrarily. */
- control = (creator->newFloatControl)(creator, portControl, CONTROL_TYPE_BALANCE, -1.0F, 1.0F, 0.01F, "");
- if (control != NULL) {
- controls[numControls++] = control;
- }
- }
- }
- }
- if (snd_mixer_selem_has_playback_switch(elem) || snd_mixer_selem_has_capture_switch(elem)) {
- if (getControlSlot(portMixer, &portControl)) {
- type = isPlayback ? CONTROL_TYPE_MUTE : CONTROL_TYPE_SELECT;
- portControl->elem = elem;
- portControl->portType = portMixer->types[portIndex];
- portControl->controlType = type;
- control = (creator->newBooleanControl)(creator, portControl, type);
- if (control != NULL) {
- controls[numControls++] = control;
- }
- }
- }
- /* $$mp 2003-09-14: The following cast shouln't be necessary. Instead, the
- declaration of PORT_NewCompoundControlPtr in Ports.h should be changed
- to take a const char* parameter. */
- portName = (char*) snd_mixer_selem_get_name(elem);
- control = (creator->newCompoundControl)(creator, portName, controls, numControls);
- if (control != NULL) {
- (creator->addControl)(creator, control);
- }
- TRACE0("< PORT_GetControls\n");
-}
-
-
-INT32 PORT_GetIntValue(void* controlIDV) {
- PortControl* portControl = (PortControl*) controlIDV;
- int value = 0;
- snd_mixer_selem_channel_id_t channel;
-
- if (portControl != NULL) {
- switch (portControl->channel) {
- case CHANNELS_MONO:
- channel = SND_MIXER_SCHN_MONO;
- break;
-
- case CHANNELS_STEREO:
- channel = SND_MIXER_SCHN_FRONT_LEFT;
- break;
-
- default:
- channel = portControl->channel;
- }
- if (portControl->controlType == CONTROL_TYPE_MUTE ||
- portControl->controlType == CONTROL_TYPE_SELECT) {
- if (isPlaybackFunction(portControl->portType)) {
- snd_mixer_selem_get_playback_switch(portControl->elem, channel, &value);
- } else {
- snd_mixer_selem_get_capture_switch(portControl->elem, channel, &value);
- }
- if (portControl->controlType == CONTROL_TYPE_MUTE) {
- value = ! value;
- }
- } else {
- ERROR1("PORT_GetIntValue(): inappropriate control type: %s\n",
- portControl->controlType);
- }
- }
- return (INT32) value;
-}
-
-
-void PORT_SetIntValue(void* controlIDV, INT32 value) {
- PortControl* portControl = (PortControl*) controlIDV;
- snd_mixer_selem_channel_id_t channel;
-
- if (portControl != NULL) {
- if (portControl->controlType == CONTROL_TYPE_MUTE) {
- value = ! value;
- }
- if (portControl->controlType == CONTROL_TYPE_MUTE ||
- portControl->controlType == CONTROL_TYPE_SELECT) {
- if (isPlaybackFunction(portControl->portType)) {
- snd_mixer_selem_set_playback_switch_all(portControl->elem, value);
- } else {
- snd_mixer_selem_set_capture_switch_all(portControl->elem, value);
- }
- } else {
- ERROR1("PORT_SetIntValue(): inappropriate control type: %s\n",
- portControl->controlType);
- }
- }
-}
-
-
-static float scaleVolumeValueToNormalized(long value, long min, long max) {
- return (float) (value - min) / getRange(min, max);
-}
-
-
-static long scaleVolumeValueToHardware(float value, long min, long max) {
- return (long)(value * getRange(min, max) + min);
-}
-
-
-float getRealVolume(PortControl* portControl,
- snd_mixer_selem_channel_id_t channel) {
- float fValue;
- long lValue = 0;
- long min = 0;
- long max = 0;
-
- if (isPlaybackFunction(portControl->portType)) {
- snd_mixer_selem_get_playback_volume_range(portControl->elem,
- &min, &max);
- snd_mixer_selem_get_playback_volume(portControl->elem,
- channel, &lValue);
- } else {
- snd_mixer_selem_get_capture_volume_range(portControl->elem,
- &min, &max);
- snd_mixer_selem_get_capture_volume(portControl->elem,
- channel, &lValue);
- }
- fValue = scaleVolumeValueToNormalized(lValue, min, max);
- return fValue;
-}
-
-
-void setRealVolume(PortControl* portControl,
- snd_mixer_selem_channel_id_t channel, float value) {
- long lValue = 0;
- long min = 0;
- long max = 0;
-
- if (isPlaybackFunction(portControl->portType)) {
- snd_mixer_selem_get_playback_volume_range(portControl->elem,
- &min, &max);
- lValue = scaleVolumeValueToHardware(value, min, max);
- snd_mixer_selem_set_playback_volume(portControl->elem,
- channel, lValue);
- } else {
- snd_mixer_selem_get_capture_volume_range(portControl->elem,
- &min, &max);
- lValue = scaleVolumeValueToHardware(value, min, max);
- snd_mixer_selem_set_capture_volume(portControl->elem,
- channel, lValue);
- }
-}
-
-
-static float getFakeBalance(PortControl* portControl) {
- float volL, volR;
-
- // pan is the ratio of left and right
- volL = getRealVolume(portControl, SND_MIXER_SCHN_FRONT_LEFT);
- volR = getRealVolume(portControl, SND_MIXER_SCHN_FRONT_RIGHT);
- if (volL > volR) {
- return -1.0f + (volR / volL);
- }
- else if (volR > volL) {
- return 1.0f - (volL / volR);
- }
- return 0.0f;
-}
-
-
-static float getFakeVolume(PortControl* portControl) {
- float valueL;
- float valueR;
- float value;
-
- valueL = getRealVolume(portControl, SND_MIXER_SCHN_FRONT_LEFT);
- valueR = getRealVolume(portControl, SND_MIXER_SCHN_FRONT_RIGHT);
- // volume is the greater value of both
- value = valueL > valueR ? valueL : valueR ;
- return value;
-}
-
-
-/*
- * sets the unsigned values for left and right volume according to
- * the given volume (0...1) and balance (-1..0..+1)
- */
-static void setFakeVolume(PortControl* portControl, float vol, float bal) {
- float volumeLeft;
- float volumeRight;
-
- if (bal < 0.0f) {
- volumeLeft = vol;
- volumeRight = vol * (bal + 1.0f);
- } else {
- volumeLeft = vol * (1.0f - bal);
- volumeRight = vol;
- }
- setRealVolume(portControl, SND_MIXER_SCHN_FRONT_LEFT, volumeLeft);
- setRealVolume(portControl, SND_MIXER_SCHN_FRONT_RIGHT, volumeRight);
-}
-
-
-float PORT_GetFloatValue(void* controlIDV) {
- PortControl* portControl = (PortControl*) controlIDV;
- float value = 0.0F;
-
- if (portControl != NULL) {
- if (portControl->controlType == CONTROL_TYPE_VOLUME) {
- switch (portControl->channel) {
- case CHANNELS_MONO:
- value = getRealVolume(portControl, SND_MIXER_SCHN_MONO);
- break;
-
- case CHANNELS_STEREO:
- value = getFakeVolume(portControl);
- break;
-
- default:
- value = getRealVolume(portControl, portControl->channel);
- }
- } else if (portControl->controlType == CONTROL_TYPE_BALANCE) {
- if (portControl->channel == CHANNELS_STEREO) {
- value = getFakeBalance(portControl);
- } else {
- ERROR0("PORT_GetFloatValue(): Balance only allowed for stereo channels!\n");
- }
- } else {
- ERROR1("PORT_GetFloatValue(): inappropriate control type: %s!\n",
- portControl->controlType);
- }
- }
- return value;
-}
-
-
-void PORT_SetFloatValue(void* controlIDV, float value) {
- PortControl* portControl = (PortControl*) controlIDV;
-
- if (portControl != NULL) {
- if (portControl->controlType == CONTROL_TYPE_VOLUME) {
- switch (portControl->channel) {
- case CHANNELS_MONO:
- setRealVolume(portControl, SND_MIXER_SCHN_MONO, value);
- break;
-
- case CHANNELS_STEREO:
- setFakeVolume(portControl, value, getFakeBalance(portControl));
- break;
-
- default:
- setRealVolume(portControl, portControl->channel, value);
- }
- } else if (portControl->controlType == CONTROL_TYPE_BALANCE) {
- if (portControl->channel == CHANNELS_STEREO) {
- setFakeVolume(portControl, getFakeVolume(portControl), value);
- } else {
- ERROR0("PORT_SetFloatValue(): Balance only allowed for stereo channels!\n");
- }
- } else {
- ERROR1("PORT_SetFloatValue(): inappropriate control type: %s!\n",
- portControl->controlType);
- }
- }
-}
-
-
-#endif // USE_PORTS