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cdda - Added a per-channel volume setting function [Barry Rodewald]

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This commit is contained in:
Miodrag Milanovic 2010-09-20 07:52:40 +00:00
parent 79c16f4260
commit 1f6995b11c
2 changed files with 17 additions and 1 deletions
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15
src/emu/sound/cdda.c
View File

@ -303,6 +303,21 @@ void cdda_set_volume(running_device *device,int volume)
stream_set_output_gain(cdda->stream,1,volume / 100.0);
}
/*-------------------------------------------------
cdda_set_channel_volume - sets CD-DA volume level
for either speaker, used for fade in/out effects
-------------------------------------------------*/
void cdda_set_channel_volume(running_device *device, int channel, int volume)
{
cdda_info *cdda = get_safe_token(device);
if(channel == 0)
stream_set_output_gain(cdda->stream,0,volume / 100.0);
if(channel == 1)
stream_set_output_gain(cdda->stream,1,volume / 100.0);
}
/**************************************************************************
* Generic get_info
**************************************************************************/

3
src/emu/sound/cdda.h
View File

@ -11,7 +11,8 @@ running_device *cdda_from_cdrom(running_machine *machine, void *file);
void cdda_start_audio(running_device *device, UINT32 startlba, UINT32 numblocks);
void cdda_stop_audio(running_device *device);
void cdda_pause_audio(running_device *device, int pause);
void cdda_set_volume(running_device *device,int volume);
void cdda_set_volume(running_device *device, int volume);
void cdda_set_channel_volume(running_device *device, int channel, int volume);
UINT32 cdda_get_audio_lba(running_device *device);
int cdda_audio_active(running_device *device);