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Diffstat (limited to '3rdparty/SDL2/src/audio/sun/SDL_sunaudio.c')
-rw-r--r--3rdparty/SDL2/src/audio/sun/SDL_sunaudio.c421
1 files changed, 0 insertions, 421 deletions
diff --git a/3rdparty/SDL2/src/audio/sun/SDL_sunaudio.c b/3rdparty/SDL2/src/audio/sun/SDL_sunaudio.c
deleted file mode 100644
index b994c12c361..00000000000
--- a/3rdparty/SDL2/src/audio/sun/SDL_sunaudio.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-#include "../../SDL_internal.h"
-
-#if SDL_AUDIO_DRIVER_SUNAUDIO
-
-/* Allow access to a raw mixing buffer */
-
-#include <fcntl.h>
-#include <errno.h>
-#ifdef __NETBSD__
-#include <sys/ioctl.h>
-#include <sys/audioio.h>
-#endif
-#ifdef __SVR4
-#include <sys/audioio.h>
-#else
-#include <sys/time.h>
-#include <sys/types.h>
-#endif
-#include <unistd.h>
-
-#include "SDL_timer.h"
-#include "SDL_audio.h"
-#include "../SDL_audio_c.h"
-#include "../SDL_audiodev_c.h"
-#include "SDL_sunaudio.h"
-
-/* Open the audio device for playback, and don't block if busy */
-
-#if defined(AUDIO_GETINFO) && !defined(AUDIO_GETBUFINFO)
-#define AUDIO_GETBUFINFO AUDIO_GETINFO
-#endif
-
-/* Audio driver functions */
-static Uint8 snd2au(int sample);
-
-/* Audio driver bootstrap functions */
-static void
-SUNAUDIO_DetectDevices(void)
-{
- SDL_EnumUnixAudioDevices(1, (int (*)(int)) NULL);
-}
-
-#ifdef DEBUG_AUDIO
-void
-CheckUnderflow(_THIS)
-{
-#ifdef AUDIO_GETBUFINFO
- audio_info_t info;
- int left;
-
- ioctl(this->hidden->audio_fd, AUDIO_GETBUFINFO, &info);
- left = (this->hidden->written - info.play.samples);
- if (this->hidden->written && (left == 0)) {
- fprintf(stderr, "audio underflow!\n");
- }
-#endif
-}
-#endif
-
-static void
-SUNAUDIO_WaitDevice(_THIS)
-{
-#ifdef AUDIO_GETBUFINFO
-#define SLEEP_FUDGE 10 /* 10 ms scheduling fudge factor */
- audio_info_t info;
- Sint32 left;
-
- ioctl(this->hidden->audio_fd, AUDIO_GETBUFINFO, &info);
- left = (this->hidden->written - info.play.samples);
- if (left > this->hidden->fragsize) {
- Sint32 sleepy;
-
- sleepy = ((left - this->hidden->fragsize) / this->hidden->frequency);
- sleepy -= SLEEP_FUDGE;
- if (sleepy > 0) {
- SDL_Delay(sleepy);
- }
- }
-#else
- fd_set fdset;
-
- FD_ZERO(&fdset);
- FD_SET(this->hidden->audio_fd, &fdset);
- select(this->hidden->audio_fd + 1, NULL, &fdset, NULL, NULL);
-#endif
-}
-
-static void
-SUNAUDIO_PlayDevice(_THIS)
-{
- /* Write the audio data */
- if (this->hidden->ulaw_only) {
- /* Assuming that this->spec.freq >= 8000 Hz */
- int accum, incr, pos;
- Uint8 *aubuf;
-
- accum = 0;
- incr = this->spec.freq / 8;
- aubuf = this->hidden->ulaw_buf;
- switch (this->hidden->audio_fmt & 0xFF) {
- case 8:
- {
- Uint8 *sndbuf;
-
- sndbuf = this->hidden->mixbuf;
- for (pos = 0; pos < this->hidden->fragsize; ++pos) {
- *aubuf = snd2au((0x80 - *sndbuf) * 64);
- accum += incr;
- while (accum > 0) {
- accum -= 1000;
- sndbuf += 1;
- }
- aubuf += 1;
- }
- }
- break;
- case 16:
- {
- Sint16 *sndbuf;
-
- sndbuf = (Sint16 *) this->hidden->mixbuf;
- for (pos = 0; pos < this->hidden->fragsize; ++pos) {
- *aubuf = snd2au(*sndbuf / 4);
- accum += incr;
- while (accum > 0) {
- accum -= 1000;
- sndbuf += 1;
- }
- aubuf += 1;
- }
- }
- break;
- }
-#ifdef DEBUG_AUDIO
- CheckUnderflow(this);
-#endif
- if (write(this->hidden->audio_fd, this->hidden->ulaw_buf,
- this->hidden->fragsize) < 0) {
- /* Assume fatal error, for now */
- SDL_OpenedAudioDeviceDisconnected(this);
- }
- this->hidden->written += this->hidden->fragsize;
- } else {
-#ifdef DEBUG_AUDIO
- CheckUnderflow(this);
-#endif
- if (write(this->hidden->audio_fd, this->hidden->mixbuf,
- this->spec.size) < 0) {
- /* Assume fatal error, for now */
- SDL_OpenedAudioDeviceDisconnected(this);
- }
- this->hidden->written += this->hidden->fragsize;
- }
-}
-
-static Uint8 *
-SUNAUDIO_GetDeviceBuf(_THIS)
-{
- return (this->hidden->mixbuf);
-}
-
-static void
-SUNAUDIO_CloseDevice(_THIS)
-{
- SDL_free(this->hidden->ulaw_buf);
- if (this->hidden->audio_fd >= 0) {
- close(this->hidden->audio_fd);
- }
- SDL_free(this->hidden->mixbuf);
- SDL_free(this->hidden);
-}
-
-static int
-SUNAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
-{
- const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
- SDL_AudioFormat format = 0;
- audio_info_t info;
-
- /* We don't care what the devname is...we'll try to open anything. */
- /* ...but default to first name in the list... */
- if (devname == NULL) {
- devname = SDL_GetAudioDeviceName(0, iscapture);
- if (devname == NULL) {
- return SDL_SetError("No such audio device");
- }
- }
-
- /* Initialize all variables that we clean on shutdown */
- this->hidden = (struct SDL_PrivateAudioData *)
- SDL_malloc((sizeof *this->hidden));
- if (this->hidden == NULL) {
- return SDL_OutOfMemory();
- }
- SDL_zerop(this->hidden);
-
- /* Open the audio device */
- this->hidden->audio_fd = open(devname, flags, 0);
- if (this->hidden->audio_fd < 0) {
- return SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
- }
-
-#ifdef AUDIO_SETINFO
- int enc;
-#endif
- int desired_freq = this->spec.freq;
-
- /* Determine the audio parameters from the AudioSpec */
- switch (SDL_AUDIO_BITSIZE(this->spec.format)) {
-
- case 8:
- { /* Unsigned 8 bit audio data */
- this->spec.format = AUDIO_U8;
-#ifdef AUDIO_SETINFO
- enc = AUDIO_ENCODING_LINEAR8;
-#endif
- }
- break;
-
- case 16:
- { /* Signed 16 bit audio data */
- this->spec.format = AUDIO_S16SYS;
-#ifdef AUDIO_SETINFO
- enc = AUDIO_ENCODING_LINEAR;
-#endif
- }
- break;
-
- default:
- {
- /* !!! FIXME: fallback to conversion on unsupported types! */
- return SDL_SetError("Unsupported audio format");
- }
- }
- this->hidden->audio_fmt = this->spec.format;
-
- this->hidden->ulaw_only = 0; /* modern Suns do support linear audio */
-#ifdef AUDIO_SETINFO
- for (;;) {
- audio_info_t info;
- AUDIO_INITINFO(&info); /* init all fields to "no change" */
-
- /* Try to set the requested settings */
- info.play.sample_rate = this->spec.freq;
- info.play.channels = this->spec.channels;
- info.play.precision = (enc == AUDIO_ENCODING_ULAW)
- ? 8 : this->spec.format & 0xff;
- info.play.encoding = enc;
- if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == 0) {
-
- /* Check to be sure we got what we wanted */
- if (ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info) < 0) {
- return SDL_SetError("Error getting audio parameters: %s",
- strerror(errno));
- }
- if (info.play.encoding == enc
- && info.play.precision == (this->spec.format & 0xff)
- && info.play.channels == this->spec.channels) {
- /* Yow! All seems to be well! */
- this->spec.freq = info.play.sample_rate;
- break;
- }
- }
-
- switch (enc) {
- case AUDIO_ENCODING_LINEAR8:
- /* unsigned 8bit apparently not supported here */
- enc = AUDIO_ENCODING_LINEAR;
- this->spec.format = AUDIO_S16SYS;
- break; /* try again */
-
- case AUDIO_ENCODING_LINEAR:
- /* linear 16bit didn't work either, resort to µ-law */
- enc = AUDIO_ENCODING_ULAW;
- this->spec.channels = 1;
- this->spec.freq = 8000;
- this->spec.format = AUDIO_U8;
- this->hidden->ulaw_only = 1;
- break;
-
- default:
- /* oh well... */
- return SDL_SetError("Error setting audio parameters: %s",
- strerror(errno));
- }
- }
-#endif /* AUDIO_SETINFO */
- this->hidden->written = 0;
-
- /* We can actually convert on-the-fly to U-Law */
- if (this->hidden->ulaw_only) {
- this->spec.freq = desired_freq;
- this->hidden->fragsize = (this->spec.samples * 1000) /
- (this->spec.freq / 8);
- this->hidden->frequency = 8;
- this->hidden->ulaw_buf = (Uint8 *) SDL_malloc(this->hidden->fragsize);
- if (this->hidden->ulaw_buf == NULL) {
- return SDL_OutOfMemory();
- }
- this->spec.channels = 1;
- } else {
- this->hidden->fragsize = this->spec.samples;
- this->hidden->frequency = this->spec.freq / 1000;
- }
-#ifdef DEBUG_AUDIO
- fprintf(stderr, "Audio device %s U-Law only\n",
- this->hidden->ulaw_only ? "is" : "is not");
- fprintf(stderr, "format=0x%x chan=%d freq=%d\n",
- this->spec.format, this->spec.channels, this->spec.freq);
-#endif
-
- /* Update the fragment size as size in bytes */
- SDL_CalculateAudioSpec(&this->spec);
-
- /* Allocate mixing buffer */
- this->hidden->mixbuf = (Uint8 *) SDL_malloc(this->spec.size);
- if (this->hidden->mixbuf == NULL) {
- return SDL_OutOfMemory();
- }
- SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
-
- /* We're ready to rock and roll. :-) */
- return 0;
-}
-
-/************************************************************************/
-/* This function (snd2au()) copyrighted: */
-/************************************************************************/
-/* Copyright 1989 by Rich Gopstein and Harris Corporation */
-/* */
-/* Permission to use, copy, modify, and distribute this software */
-/* and its documentation for any purpose and without fee is */
-/* hereby granted, provided that the above copyright notice */
-/* appears in all copies and that both that copyright notice and */
-/* this permission notice appear in supporting documentation, and */
-/* that the name of Rich Gopstein and Harris Corporation not be */
-/* used in advertising or publicity pertaining to distribution */
-/* of the software without specific, written prior permission. */
-/* Rich Gopstein and Harris Corporation make no representations */
-/* about the suitability of this software for any purpose. It */
-/* provided "as is" without express or implied warranty. */
-/************************************************************************/
-
-static Uint8
-snd2au(int sample)
-{
-
- int mask;
-
- if (sample < 0) {
- sample = -sample;
- mask = 0x7f;
- } else {
- mask = 0xff;
- }
-
- if (sample < 32) {
- sample = 0xF0 | (15 - sample / 2);
- } else if (sample < 96) {
- sample = 0xE0 | (15 - (sample - 32) / 4);
- } else if (sample < 224) {
- sample = 0xD0 | (15 - (sample - 96) / 8);
- } else if (sample < 480) {
- sample = 0xC0 | (15 - (sample - 224) / 16);
- } else if (sample < 992) {
- sample = 0xB0 | (15 - (sample - 480) / 32);
- } else if (sample < 2016) {
- sample = 0xA0 | (15 - (sample - 992) / 64);
- } else if (sample < 4064) {
- sample = 0x90 | (15 - (sample - 2016) / 128);
- } else if (sample < 8160) {
- sample = 0x80 | (15 - (sample - 4064) / 256);
- } else {
- sample = 0x80;
- }
- return (mask & sample);
-}
-
-static int
-SUNAUDIO_Init(SDL_AudioDriverImpl * impl)
-{
- /* Set the function pointers */
- impl->DetectDevices = SUNAUDIO_DetectDevices;
- impl->OpenDevice = SUNAUDIO_OpenDevice;
- impl->PlayDevice = SUNAUDIO_PlayDevice;
- impl->WaitDevice = SUNAUDIO_WaitDevice;
- impl->GetDeviceBuf = SUNAUDIO_GetDeviceBuf;
- impl->CloseDevice = SUNAUDIO_CloseDevice;
-
- impl->AllowsArbitraryDeviceNames = 1;
-
- return 1; /* this audio target is available. */
-}
-
-AudioBootStrap SUNAUDIO_bootstrap = {
- "audio", "UNIX /dev/audio interface", SUNAUDIO_Init, 0
-};
-
-#endif /* SDL_AUDIO_DRIVER_SUNAUDIO */
-
-/* vi: set ts=4 sw=4 expandtab: */