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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| /* FluidSynth - A Software Synthesizer | ||
| * | ||
| * Copyright (C) 2003 Peter Hanappe and others. | ||
| * Copyright (C) 2024 KO Myung-Hun | ||
| * | ||
| * This library is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU Library General Public License | ||
| * as published by the Free Software Foundation; either version 2 of | ||
| * the License, or (at your option) any later version. | ||
| * | ||
| * This library 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 | ||
| * Library General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Library General Public | ||
| * License along with this library; if not, write to the Free | ||
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
| * 02111-1307, USA | ||
| */ | ||
|
|
||
| /* fluid_kai.c | ||
| * | ||
| * Driver for OS/2 KAI | ||
| * | ||
| */ | ||
|
|
||
| #include "fluid_adriver.h" | ||
| #include "fluid_settings.h" | ||
| #include "fluid_sys.h" | ||
|
|
||
| #if KAI_SUPPORT | ||
|
|
||
| #define INCL_DOS | ||
| #include <os2.h> | ||
|
|
||
| #include <kai.h> | ||
|
|
||
| #define NUM_MIX_BUFS 2 | ||
|
|
||
| /** fluid_kai_audio_driver_t | ||
| * | ||
| * This structure should not be accessed directly. Use audio port | ||
| * functions instead. | ||
| */ | ||
| typedef struct { | ||
| fluid_audio_driver_t driver; | ||
| fluid_synth_t *synth; | ||
| int frame_size; | ||
| HKAI hkai; /* KAI handle */ | ||
| } fluid_kai_audio_driver_t; | ||
|
|
||
| static APIRET APIENTRY | ||
| fluid_kai_callback(PVOID pCBData, PVOID pBuffer, ULONG ulSize); | ||
|
|
||
| /************************************************************** | ||
| * | ||
| * KAI audio driver | ||
| * | ||
| */ | ||
|
|
||
| void fluid_kai_audio_driver_settings(fluid_settings_t *settings) | ||
| { | ||
| fluid_settings_register_str(settings, "audio.kai.device", "default", 0); | ||
| } | ||
|
|
||
| fluid_audio_driver_t * | ||
| new_fluid_kai_audio_driver(fluid_settings_t *settings, fluid_synth_t *synth) | ||
| { | ||
| fluid_kai_audio_driver_t *dev; | ||
| KAISPEC wanted, obtained; | ||
| double sample_rate; | ||
| int periods, period_size; | ||
| ULONG rc; | ||
|
|
||
| dev = FLUID_NEW(fluid_kai_audio_driver_t); | ||
| if (dev == NULL) { | ||
| FLUID_LOG(FLUID_ERR, "Out of memory"); | ||
| return NULL; | ||
| } | ||
|
|
||
| FLUID_MEMSET(dev, 0, sizeof(fluid_kai_audio_driver_t)); | ||
|
|
||
| fluid_settings_getnum(settings, "synth.sample-rate", &sample_rate); | ||
| fluid_settings_getint(settings, "audio.periods", &periods); | ||
| fluid_settings_getint(settings, "audio.period-size", &period_size); | ||
|
|
||
| /* check the format */ | ||
| if (!fluid_settings_str_equal(settings, "audio.sample-format", "16bits")) { | ||
| FLUID_LOG(FLUID_ERR, "Unhandled sample format"); | ||
| goto error_recovery; | ||
| } | ||
|
|
||
| dev->synth = synth; | ||
| dev->frame_size = 2/* channels */ * sizeof(short)/* 16bits sample */; | ||
|
|
||
| /* Initialize KAI */ | ||
| rc = kaiInit(KAIM_AUTO); | ||
| if (rc != KAIE_NO_ERROR) { | ||
| FLUID_LOG(FLUID_ERR, "Cannot initialize KAI, rc = %lu", rc); | ||
| goto error_recovery; | ||
| } | ||
|
|
||
| /* Open KAI */ | ||
| wanted.usDeviceIndex = 0; /* default device */ | ||
| wanted.ulType = KAIT_PLAY; | ||
| wanted.ulBitsPerSample = BPS_16; /* only 16bits audio */ | ||
| wanted.ulSamplingRate = sample_rate; | ||
| wanted.ulDataFormat = MCI_WAVE_FORMAT_PCM; | ||
| wanted.ulChannels = 2; /* only 2 channels */ | ||
| wanted.ulNumBuffers = NUM_MIX_BUFS; | ||
| wanted.ulBufferSize = periods * period_size * dev->frame_size; | ||
| wanted.fShareable = TRUE; | ||
| wanted.pfnCallBack = fluid_kai_callback; | ||
| wanted.pCallBackData = dev; | ||
|
|
||
| rc = kaiOpen(&wanted, &obtained, &dev->hkai); | ||
| if (rc != KAIE_NO_ERROR) { | ||
| FLUID_LOG(FLUID_ERR, "Cannot open KAI, rc = %lu", rc); | ||
| goto error_recovery; | ||
| } | ||
|
|
||
| /* Start to play */ | ||
| kaiPlay(dev->hkai); | ||
|
|
||
| return (fluid_audio_driver_t *) dev; | ||
|
|
||
| error_recovery: | ||
|
|
||
| delete_fluid_kai_audio_driver((fluid_audio_driver_t *) dev); | ||
| return NULL; | ||
| } | ||
|
|
||
| void delete_fluid_kai_audio_driver(fluid_audio_driver_t *p) | ||
| { | ||
| fluid_kai_audio_driver_t *dev = (fluid_kai_audio_driver_t *) p; | ||
|
|
||
| fluid_return_if_fail(dev != NULL); | ||
|
|
||
| /* Stop playing */ | ||
| kaiStop(dev->hkai); | ||
|
|
||
| /* Close KAI */ | ||
| kaiClose(dev->hkai); | ||
|
|
||
| /* Terminate KAI */ | ||
| kaiDone(); | ||
|
|
||
| FLUID_FREE(dev); | ||
| } | ||
|
|
||
| static APIRET APIENTRY | ||
| fluid_kai_callback(PVOID pCBData, PVOID pBuffer, ULONG ulSize) | ||
| { | ||
| fluid_kai_audio_driver_t *dev = (fluid_kai_audio_driver_t *) pCBData; | ||
|
|
||
| FLUID_MEMSET(pBuffer, 0, ulSize); | ||
| fluid_synth_write_s16(dev->synth, ulSize / dev->frame_size, | ||
| pBuffer, 0, 2, pBuffer, 1, 2 ); | ||
|
|
||
| return ulSize; | ||
| } | ||
|
|
||
| #endif /* #if KAI_SUPPORT */ |