From 30f41c02aec763d32e62351452da9ef582bc3472 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Fri, 6 Mar 2026 13:30:59 -0800 Subject: Move contrib libraries to contrib repo --- contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.c | 303 ------------------------- contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.h | 37 --- 2 files changed, 340 deletions(-) delete mode 100644 contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.c delete mode 100644 contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.h (limited to 'contrib/SDL-3.2.8/src/audio/dsp') diff --git a/contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.c b/contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.c deleted file mode 100644 index 62b8990..0000000 --- a/contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.c +++ /dev/null @@ -1,303 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2025 Sam Lantinga - - 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" - -// !!! FIXME: clean out perror and fprintf calls in here. - -#ifdef SDL_AUDIO_DRIVER_OSS - -#include // For perror() -#include // For strerror() -#include -#include -#include -#include -#include -#include -#include - -#include - -#include "../SDL_audiodev_c.h" -#include "SDL_dspaudio.h" - -static void DSP_DetectDevices(SDL_AudioDevice **default_playback, SDL_AudioDevice **default_recording) -{ - SDL_EnumUnixAudioDevices(false, NULL); -} - -static void DSP_CloseDevice(SDL_AudioDevice *device) -{ - if (device->hidden) { - if (device->hidden->audio_fd >= 0) { - close(device->hidden->audio_fd); - } - SDL_free(device->hidden->mixbuf); - SDL_free(device->hidden); - } -} - -static bool DSP_OpenDevice(SDL_AudioDevice *device) -{ - // Make sure fragment size stays a power of 2, or OSS fails. - // (I don't know which of these are actually legal values, though...) - if (device->spec.channels > 8) { - device->spec.channels = 8; - } else if (device->spec.channels > 4) { - device->spec.channels = 4; - } else if (device->spec.channels > 2) { - device->spec.channels = 2; - } - - // Initialize all variables that we clean on shutdown - device->hidden = (struct SDL_PrivateAudioData *) SDL_calloc(1, sizeof(*device->hidden)); - if (!device->hidden) { - return false; - } - - // Open the audio device; we hardcode the device path in `device->name` for lack of better info, so use that. - const int flags = ((device->recording) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT); - device->hidden->audio_fd = open(device->name, flags | O_CLOEXEC, 0); - if (device->hidden->audio_fd < 0) { - return SDL_SetError("Couldn't open %s: %s", device->name, strerror(errno)); - } - - // Make the file descriptor use blocking i/o with fcntl() - { - const long ctlflags = fcntl(device->hidden->audio_fd, F_GETFL) & ~O_NONBLOCK; - if (fcntl(device->hidden->audio_fd, F_SETFL, ctlflags) < 0) { - return SDL_SetError("Couldn't set audio blocking mode"); - } - } - - // Get a list of supported hardware formats - int value; - if (ioctl(device->hidden->audio_fd, SNDCTL_DSP_GETFMTS, &value) < 0) { - perror("SNDCTL_DSP_GETFMTS"); - return SDL_SetError("Couldn't get audio format list"); - } - - // Try for a closest match on audio format - int format = 0; - SDL_AudioFormat test_format; - const SDL_AudioFormat *closefmts = SDL_ClosestAudioFormats(device->spec.format); - while ((test_format = *(closefmts++)) != 0) { -#ifdef DEBUG_AUDIO - fprintf(stderr, "Trying format 0x%4.4x\n", test_format); -#endif - switch (test_format) { - case SDL_AUDIO_U8: - if (value & AFMT_U8) { - format = AFMT_U8; - } - break; - case SDL_AUDIO_S16LE: - if (value & AFMT_S16_LE) { - format = AFMT_S16_LE; - } - break; - case SDL_AUDIO_S16BE: - if (value & AFMT_S16_BE) { - format = AFMT_S16_BE; - } - break; - - default: - continue; - } - break; - } - if (format == 0) { - return SDL_SetError("Couldn't find any hardware audio formats"); - } - device->spec.format = test_format; - - // Set the audio format - value = format; - if ((ioctl(device->hidden->audio_fd, SNDCTL_DSP_SETFMT, &value) < 0) || - (value != format)) { - perror("SNDCTL_DSP_SETFMT"); - return SDL_SetError("Couldn't set audio format"); - } - - // Set the number of channels of output - value = device->spec.channels; - if (ioctl(device->hidden->audio_fd, SNDCTL_DSP_CHANNELS, &value) < 0) { - perror("SNDCTL_DSP_CHANNELS"); - return SDL_SetError("Cannot set the number of channels"); - } - device->spec.channels = value; - - // Set the DSP frequency - value = device->spec.freq; - if (ioctl(device->hidden->audio_fd, SNDCTL_DSP_SPEED, &value) < 0) { - perror("SNDCTL_DSP_SPEED"); - return SDL_SetError("Couldn't set audio frequency"); - } - device->spec.freq = value; - - // Calculate the final parameters for this audio specification - SDL_UpdatedAudioDeviceFormat(device); - - /* Determine the power of two of the fragment size - Since apps don't control this in SDL3, and this driver only accepts 8, 16 - bit formats and 1, 2, 4, 8 channels, this should always be a power of 2 already. */ - SDL_assert(SDL_powerof2(device->buffer_size) == device->buffer_size); - - int frag_spec = 0; - while ((0x01U << frag_spec) < device->buffer_size) { - frag_spec++; - } - frag_spec |= 0x00020000; // two fragments, for low latency - - // Set the audio buffering parameters -#ifdef DEBUG_AUDIO - fprintf(stderr, "Requesting %d fragments of size %d\n", - (frag_spec >> 16), 1 << (frag_spec & 0xFFFF)); -#endif - if (ioctl(device->hidden->audio_fd, SNDCTL_DSP_SETFRAGMENT, &frag_spec) < 0) { - perror("SNDCTL_DSP_SETFRAGMENT"); - } -#ifdef DEBUG_AUDIO - { - audio_buf_info info; - ioctl(device->hidden->audio_fd, SNDCTL_DSP_GETOSPACE, &info); - fprintf(stderr, "fragments = %d\n", info.fragments); - fprintf(stderr, "fragstotal = %d\n", info.fragstotal); - fprintf(stderr, "fragsize = %d\n", info.fragsize); - fprintf(stderr, "bytes = %d\n", info.bytes); - } -#endif - - // Allocate mixing buffer - if (!device->recording) { - device->hidden->mixbuf = (Uint8 *)SDL_malloc(device->buffer_size); - if (!device->hidden->mixbuf) { - return false; - } - SDL_memset(device->hidden->mixbuf, device->silence_value, device->buffer_size); - } - - return true; // We're ready to rock and roll. :-) -} - -static bool DSP_WaitDevice(SDL_AudioDevice *device) -{ - const unsigned long ioctlreq = device->recording ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE; - struct SDL_PrivateAudioData *h = device->hidden; - - while (!SDL_GetAtomicInt(&device->shutdown)) { - audio_buf_info info; - const int rc = ioctl(h->audio_fd, ioctlreq, &info); - if (rc < 0) { - if (errno == EAGAIN) { - continue; - } - // Hmm, not much we can do - abort - fprintf(stderr, "dsp WaitDevice ioctl failed (unrecoverable): %s\n", strerror(errno)); - return false; - } else if (info.bytes < device->buffer_size) { - SDL_Delay(10); - } else { - break; // ready to go! - } - } - - return true; -} - -static bool DSP_PlayDevice(SDL_AudioDevice *device, const Uint8 *buffer, int buflen) -{ - struct SDL_PrivateAudioData *h = device->hidden; - if (write(h->audio_fd, buffer, buflen) == -1) { - perror("Audio write"); - return false; - } -#ifdef DEBUG_AUDIO - fprintf(stderr, "Wrote %d bytes of audio data\n", h->mixlen); -#endif - return true; -} - -static Uint8 *DSP_GetDeviceBuf(SDL_AudioDevice *device, int *buffer_size) -{ - return device->hidden->mixbuf; -} - -static int DSP_RecordDevice(SDL_AudioDevice *device, void *buffer, int buflen) -{ - return (int)read(device->hidden->audio_fd, buffer, buflen); -} - -static void DSP_FlushRecording(SDL_AudioDevice *device) -{ - struct SDL_PrivateAudioData *h = device->hidden; - audio_buf_info info; - if (ioctl(h->audio_fd, SNDCTL_DSP_GETISPACE, &info) == 0) { - while (info.bytes > 0) { - char buf[512]; - const size_t len = SDL_min(sizeof(buf), info.bytes); - const ssize_t br = read(h->audio_fd, buf, len); - if (br <= 0) { - break; - } - info.bytes -= br; - } - } -} - -static bool InitTimeDevicesExist = false; -static bool look_for_devices_test(int fd) -{ - InitTimeDevicesExist = true; // note that _something_ exists. - // Don't add to the device list, we're just seeing if any devices exist. - return false; -} - -static bool DSP_Init(SDL_AudioDriverImpl *impl) -{ - InitTimeDevicesExist = false; - SDL_EnumUnixAudioDevices(false, look_for_devices_test); - if (!InitTimeDevicesExist) { - SDL_SetError("dsp: No such audio device"); - return false; // maybe try a different backend. - } - - impl->DetectDevices = DSP_DetectDevices; - impl->OpenDevice = DSP_OpenDevice; - impl->WaitDevice = DSP_WaitDevice; - impl->PlayDevice = DSP_PlayDevice; - impl->GetDeviceBuf = DSP_GetDeviceBuf; - impl->CloseDevice = DSP_CloseDevice; - impl->WaitRecordingDevice = DSP_WaitDevice; - impl->RecordDevice = DSP_RecordDevice; - impl->FlushRecording = DSP_FlushRecording; - - impl->HasRecordingSupport = true; - - return true; -} - -AudioBootStrap DSP_bootstrap = { - "dsp", "Open Sound System (/dev/dsp)", DSP_Init, false, false -}; - -#endif // SDL_AUDIO_DRIVER_OSS diff --git a/contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.h b/contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.h deleted file mode 100644 index 65dea60..0000000 --- a/contrib/SDL-3.2.8/src/audio/dsp/SDL_dspaudio.h +++ /dev/null @@ -1,37 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2025 Sam Lantinga - - 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" - -#ifndef SDL_dspaudio_h_ -#define SDL_dspaudio_h_ - -#include "../SDL_sysaudio.h" - -struct SDL_PrivateAudioData -{ - // The file descriptor for the audio device - int audio_fd; - - // Raw mixing buffer - Uint8 *mixbuf; -}; - -#endif // SDL_dspaudio_h_ -- cgit v1.2.3