diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/audio/ums/SDL_umsaudio.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/audio/ums/SDL_umsaudio.c | 547 |
1 files changed, 0 insertions, 547 deletions
diff --git a/distrib/sdl-1.2.12/src/audio/ums/SDL_umsaudio.c b/distrib/sdl-1.2.12/src/audio/ums/SDL_umsaudio.c deleted file mode 100644 index e873b56..0000000 --- a/distrib/sdl-1.2.12/src/audio/ums/SDL_umsaudio.c +++ /dev/null @@ -1,547 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Carsten Griwodz - griff@kom.tu-darmstadt.de - - based on linux/SDL_dspaudio.c by Sam Lantinga -*/ -#include "SDL_config.h" - -/* Allow access to a raw mixing buffer */ - -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/time.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/mman.h> - -#include "SDL_audio.h" -#include "../SDL_audio_c.h" -#include "../SDL_audiodev_c.h" -#include "SDL_umsaudio.h" - -/* The tag name used by UMS audio */ -#define UMS_DRIVER_NAME "ums" - -#define DEBUG_AUDIO 1 - -/* Audio driver functions */ -static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec); -static void UMS_PlayAudio(_THIS); -static Uint8 *UMS_GetAudioBuf(_THIS); -static void UMS_CloseAudio(_THIS); - -static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags); -static UMSAudioDevice_ReturnCode UADClose(_THIS); -static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits); -static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits); -static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate); -static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order); -static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt); -static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt); -static UMSAudioDevice_ReturnCode UADInitialize(_THIS); -static UMSAudioDevice_ReturnCode UADStart(_THIS); -static UMSAudioDevice_ReturnCode UADStop(_THIS); -static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt ); -static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size ); -static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size ); -static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size ); -static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret ); -static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume ); -static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance ); -static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels ); -static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block ); -static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain); -static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff, long samples, long* samples_written); - -/* Audio driver bootstrap functions */ -static int Audio_Available(void) -{ - return 1; -} - -static void Audio_DeleteDevice(_THIS) -{ - if(this->hidden->playbuf._buffer) SDL_free(this->hidden->playbuf._buffer); - if(this->hidden->fillbuf._buffer) SDL_free(this->hidden->fillbuf._buffer); - _somFree( this->hidden->umsdev ); - SDL_free(this->hidden); - SDL_free(this); -} - -static SDL_AudioDevice *Audio_CreateDevice(int devindex) -{ - SDL_AudioDevice *this; - - /* - * Allocate and initialize management storage and private management - * storage for this SDL-using library. - */ - this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); - if ( this ) { - SDL_memset(this, 0, (sizeof *this)); - this->hidden = (struct SDL_PrivateAudioData *)SDL_malloc((sizeof *this->hidden)); - } - if ( (this == NULL) || (this->hidden == NULL) ) { - SDL_OutOfMemory(); - if ( this ) { - SDL_free(this); - } - return(0); - } - SDL_memset(this->hidden, 0, (sizeof *this->hidden)); -#ifdef DEBUG_AUDIO - fprintf(stderr, "Creating UMS Audio device\n"); -#endif - - /* - * Calls for UMS env initialization and audio object construction. - */ - this->hidden->ev = somGetGlobalEnvironment(); - this->hidden->umsdev = UMSAudioDeviceNew(); - - /* - * Set the function pointers. - */ - this->OpenAudio = UMS_OpenAudio; - this->WaitAudio = NULL; /* we do blocking output */ - this->PlayAudio = UMS_PlayAudio; - this->GetAudioBuf = UMS_GetAudioBuf; - this->CloseAudio = UMS_CloseAudio; - this->free = Audio_DeleteDevice; - -#ifdef DEBUG_AUDIO - fprintf(stderr, "done\n"); -#endif - return this; -} - -AudioBootStrap UMS_bootstrap = { - UMS_DRIVER_NAME, "AIX UMS audio", - Audio_Available, Audio_CreateDevice -}; - -static Uint8 *UMS_GetAudioBuf(_THIS) -{ -#ifdef DEBUG_AUDIO - fprintf(stderr, "enter UMS_GetAudioBuf\n"); -#endif - return this->hidden->fillbuf._buffer; -/* - long bufSize; - UMSAudioDevice_ReturnCode rc; - - rc = UADSetTimeFormat(this, UMSAudioTypes_Bytes ); - rc = UADWriteBuffSize(this, bufSize ); -*/ -} - -static void UMS_CloseAudio(_THIS) -{ - UMSAudioDevice_ReturnCode rc; - -#ifdef DEBUG_AUDIO - fprintf(stderr, "enter UMS_CloseAudio\n"); -#endif - rc = UADPlayRemainingData(this, TRUE); - rc = UADStop(this); - rc = UADClose(this); -} - -static void UMS_PlayAudio(_THIS) -{ - UMSAudioDevice_ReturnCode rc; - long samplesToWrite; - long samplesWritten; - UMSAudioTypes_Buffer swpbuf; - -#ifdef DEBUG_AUDIO - fprintf(stderr, "enter UMS_PlayAudio\n"); -#endif - samplesToWrite = this->hidden->playbuf._length/this->hidden->bytesPerSample; - do - { - rc = UADWrite(this, &this->hidden->playbuf, - samplesToWrite, - &samplesWritten ); - samplesToWrite -= samplesWritten; - - /* rc values: UMSAudioDevice_Success - * UMSAudioDevice_Failure - * UMSAudioDevice_Preempted - * UMSAudioDevice_Interrupted - * UMSAudioDevice_DeviceError - */ - if ( rc == UMSAudioDevice_DeviceError ) { -#ifdef DEBUG_AUDIO - fprintf(stderr, "Returning from PlayAudio with devices error\n"); -#endif - return; - } - } - while(samplesToWrite>0); - - SDL_LockAudio(); - SDL_memcpy( &swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer) ); - SDL_memcpy( &this->hidden->playbuf, &this->hidden->fillbuf, sizeof(UMSAudioTypes_Buffer) ); - SDL_memcpy( &this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer) ); - SDL_UnlockAudio(); - -#ifdef DEBUG_AUDIO - fprintf(stderr, "Wrote audio data and swapped buffer\n"); -#endif -} - -#if 0 -// /* Set the DSP frequency */ -// value = spec->freq; -// if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) { -// SDL_SetError("Couldn't set audio frequency"); -// return(-1); -// } -// spec->freq = value; -#endif - -static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec) -{ - char* audiodev = "/dev/paud0"; - long lgain; - long rgain; - long outRate; - long outBufSize; - long bitsPerSample; - long samplesPerSec; - long success; - Uint16 test_format; - int frag_spec; - UMSAudioDevice_ReturnCode rc; - -#ifdef DEBUG_AUDIO - fprintf(stderr, "enter UMS_OpenAudio\n"); -#endif - rc = UADOpen(this, audiodev,"PLAY", UMSAudioDevice_BlockingIO); - if ( rc != UMSAudioDevice_Success ) { - SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno)); - return -1; - } - - rc = UADSetAudioFormatType(this, "PCM"); - - success = 0; - test_format = SDL_FirstAudioFormat(spec->format); - do - { -#ifdef DEBUG_AUDIO - fprintf(stderr, "Trying format 0x%4.4x\n", test_format); -#endif - switch ( test_format ) - { - case AUDIO_U8: -/* from the mac code: better ? */ -/* sample_bits = spec->size / spec->samples / spec->channels * 8; */ - success = 1; - bitsPerSample = 8; - rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); - rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ - rc = UADSetNumberFormat(this, "UNSIGNED"); - break; - case AUDIO_S8: - success = 1; - bitsPerSample = 8; - rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); - rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ - rc = UADSetNumberFormat(this, "SIGNED"); - break; - case AUDIO_S16LSB: - success = 1; - bitsPerSample = 16; - rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); - rc = UADSetByteOrder(this, "LSB"); - rc = UADSetNumberFormat(this, "SIGNED"); - break; - case AUDIO_S16MSB: - success = 1; - bitsPerSample = 16; - rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); - rc = UADSetByteOrder(this, "MSB"); - rc = UADSetNumberFormat(this, "SIGNED"); - break; - case AUDIO_U16LSB: - success = 1; - bitsPerSample = 16; - rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); - rc = UADSetByteOrder(this, "LSB"); - rc = UADSetNumberFormat(this, "UNSIGNED"); - break; - case AUDIO_U16MSB: - success = 1; - bitsPerSample = 16; - rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); - rc = UADSetByteOrder(this, "MSB"); - rc = UADSetNumberFormat(this, "UNSIGNED"); - break; - default: - break; - } - if ( ! success ) { - test_format = SDL_NextAudioFormat(); - } - } - while ( ! success && test_format ); - - if ( success == 0 ) { - SDL_SetError("Couldn't find any hardware audio formats"); - return -1; - } - - spec->format = test_format; - - for ( frag_spec = 0; (0x01<<frag_spec) < spec->size; ++frag_spec ); - if ( (0x01<<frag_spec) != spec->size ) { - SDL_SetError("Fragment size must be a power of two"); - return -1; - } - if ( frag_spec > 2048 ) frag_spec = 2048; - - this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels; - samplesPerSec = this->hidden->bytesPerSample * outRate; - - this->hidden->playbuf._length = 0; - this->hidden->playbuf._maximum = spec->size; - this->hidden->playbuf._buffer = (unsigned char*)SDL_malloc(spec->size); - this->hidden->fillbuf._length = 0; - this->hidden->fillbuf._maximum = spec->size; - this->hidden->fillbuf._buffer = (unsigned char*)SDL_malloc(spec->size); - - rc = UADSetBitsPerSample(this, bitsPerSample ); - rc = UADSetDMABufferSize(this, frag_spec, &outBufSize ); - rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */ - - lgain = 100; /*maximum left input gain*/ - rgain = 100; /*maimum right input gain*/ - rc = UADEnableOutput(this, "LINE_OUT",&lgain,&rgain); - rc = UADInitialize(this); - rc = UADStart(this); - rc = UADSetVolume(this, 100); - rc = UADSetBalance(this, 0); - - /* We're ready to rock and roll. :-) */ - return 0; -} - - -static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits) -{ - return UMSAudioDevice_get_bits_per_sample( this->hidden->umsdev, - this->hidden->ev, - bits ); -} - -static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits) -{ - return UMSAudioDevice_set_bits_per_sample( this->hidden->umsdev, - this->hidden->ev, - bits ); -} - -static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate) -{ - /* from the mac code: sample rate = spec->freq << 16; */ - return UMSAudioDevice_set_sample_rate( this->hidden->umsdev, - this->hidden->ev, - rate, - set_rate ); -} - -static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order) -{ - return UMSAudioDevice_set_byte_order( this->hidden->umsdev, - this->hidden->ev, - byte_order ); -} - -static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt) -{ - /* possible PCM, A_LAW or MU_LAW */ - return UMSAudioDevice_set_audio_format_type( this->hidden->umsdev, - this->hidden->ev, - fmt ); -} - -static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt) -{ - /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */ - return UMSAudioDevice_set_number_format( this->hidden->umsdev, - this->hidden->ev, - fmt ); -} - -static UMSAudioDevice_ReturnCode UADInitialize(_THIS) -{ - return UMSAudioDevice_initialize( this->hidden->umsdev, - this->hidden->ev ); -} - -static UMSAudioDevice_ReturnCode UADStart(_THIS) -{ - return UMSAudioDevice_start( this->hidden->umsdev, - this->hidden->ev ); -} - -static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt ) -{ - /* - * Switches the time format to the new format, immediately. - * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples - */ - return UMSAudioDevice_set_time_format( this->hidden->umsdev, - this->hidden->ev, - fmt ); -} - -static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size ) -{ - /* - * returns write buffer size in the current time format - */ - return UMSAudioDevice_write_buff_size( this->hidden->umsdev, - this->hidden->ev, - buff_size ); -} - -static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size ) -{ - /* - * returns amount of available space in the write buffer - * in the current time format - */ - return UMSAudioDevice_write_buff_remain( this->hidden->umsdev, - this->hidden->ev, - buff_size ); -} - -static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size ) -{ - /* - * returns amount of filled space in the write buffer - * in the current time format - */ - return UMSAudioDevice_write_buff_used( this->hidden->umsdev, - this->hidden->ev, - buff_size ); -} - -static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret ) -{ - /* - * Request a new DMA buffer size, maximum requested size 2048. - * Takes effect with next initialize() call. - * Devices may or may not support DMA. - */ - return UMSAudioDevice_set_DMA_buffer_size( this->hidden->umsdev, - this->hidden->ev, - bytes, - bytes_ret ); -} - -static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume ) -{ - /* - * Set the volume. - * Takes effect immediately. - */ - return UMSAudioDevice_set_volume( this->hidden->umsdev, - this->hidden->ev, - volume ); -} - -static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance ) -{ - /* - * Set the balance. - * Takes effect immediately. - */ - return UMSAudioDevice_set_balance( this->hidden->umsdev, - this->hidden->ev, - balance ); -} - -static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels ) -{ - /* - * Set mono or stereo. - * Takes effect with next initialize() call. - */ - if ( channels != 1 ) channels = 2; - return UMSAudioDevice_set_number_of_channels( this->hidden->umsdev, - this->hidden->ev, - channels ); -} - -static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags) -{ - return UMSAudioDevice_open( this->hidden->umsdev, - this->hidden->ev, - device, - mode, - flags ); -} - -static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff, - long samples, - long* samples_written) -{ - return UMSAudioDevice_write( this->hidden->umsdev, - this->hidden->ev, - buff, - samples, - samples_written ); -} - -static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block ) -{ - return UMSAudioDevice_play_remaining_data( this->hidden->umsdev, - this->hidden->ev, - block); -} - -static UMSAudioDevice_ReturnCode UADStop(_THIS) -{ - return UMSAudioDevice_stop( this->hidden->umsdev, - this->hidden->ev ); -} - -static UMSAudioDevice_ReturnCode UADClose(_THIS) -{ - return UMSAudioDevice_close( this->hidden->umsdev, - this->hidden->ev ); -} - -static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain) -{ - return UMSAudioDevice_enable_output( this->hidden->umsdev, - this->hidden->ev, - output, - left_gain, - right_gain ); -} - |