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@@ -1,446 +0,0 @@
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-/*
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- Simple DirectMedia Layer
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- Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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-
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- This software is provided 'as-is', without any express or implied
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- warranty. In no event will the authors be held liable for any damages
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- arising from the use of this software.
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-
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- Permission is granted to anyone to use this software for any purpose,
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- including commercial applications, and to alter it and redistribute it
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- freely, subject to the following restrictions:
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-
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- 1. The origin of this software must not be misrepresented; you must not
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- claim that you wrote the original software. If you use this software
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- in a product, an acknowledgment in the product documentation would be
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- appreciated but is not required.
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- 2. Altered source versions must be plainly marked as such, and must not be
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- misrepresented as being the original software.
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- 3. This notice may not be removed or altered from any source distribution.
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-*/
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-#include "../../SDL_internal.h"
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-
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-#if SDL_AUDIO_DRIVER_JACK
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-
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-#include "SDL_timer.h"
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-#include "SDL_audio.h"
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-#include "../SDL_audio_c.h"
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-#include "SDL_jackaudio.h"
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-#include "SDL_loadso.h"
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-#include "../../thread/SDL_systhread.h"
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-
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-
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-static jack_client_t * (*JACK_jack_client_open) (const char *, jack_options_t, jack_status_t *, ...);
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-static int (*JACK_jack_client_close) (jack_client_t *);
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-static void (*JACK_jack_on_shutdown) (jack_client_t *, JackShutdownCallback, void *);
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-static int (*JACK_jack_activate) (jack_client_t *);
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-static int (*JACK_jack_deactivate) (jack_client_t *);
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-static void * (*JACK_jack_port_get_buffer) (jack_port_t *, jack_nframes_t);
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-static int (*JACK_jack_port_unregister) (jack_client_t *, jack_port_t *);
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-static void (*JACK_jack_free) (void *);
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-static const char ** (*JACK_jack_get_ports) (jack_client_t *, const char *, const char *, unsigned long);
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-static jack_nframes_t (*JACK_jack_get_sample_rate) (jack_client_t *);
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-static jack_nframes_t (*JACK_jack_get_buffer_size) (jack_client_t *);
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-static jack_port_t * (*JACK_jack_port_register) (jack_client_t *, const char *, const char *, unsigned long, unsigned long);
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-static jack_port_t * (*JACK_jack_port_by_name) (jack_client_t *, const char *);
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-static const char * (*JACK_jack_port_name) (const jack_port_t *);
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-static const char * (*JACK_jack_port_type) (const jack_port_t *);
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-static int (*JACK_jack_connect) (jack_client_t *, const char *, const char *);
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-static int (*JACK_jack_set_process_callback) (jack_client_t *, JackProcessCallback, void *);
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-
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-static int load_jack_syms(void);
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-
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-
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-#ifdef SDL_AUDIO_DRIVER_JACK_DYNAMIC
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-
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-static const char *jack_library = SDL_AUDIO_DRIVER_JACK_DYNAMIC;
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-static void *jack_handle = NULL;
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-
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-/* !!! FIXME: this is copy/pasted in several places now */
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-static int
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-load_jack_sym(const char *fn, void **addr)
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-{
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- *addr = SDL_LoadFunction(jack_handle, fn);
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- if (*addr == NULL) {
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- /* Don't call SDL_SetError(): SDL_LoadFunction already did. */
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- return 0;
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- }
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-
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- return 1;
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-}
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-
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-/* cast funcs to char* first, to please GCC's strict aliasing rules. */
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-#define SDL_JACK_SYM(x) \
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- if (!load_jack_sym(#x, (void **) (char *) &JACK_##x)) return -1
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-
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-static void
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-UnloadJackLibrary(void)
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-{
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- if (jack_handle != NULL) {
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- SDL_UnloadObject(jack_handle);
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- jack_handle = NULL;
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- }
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-}
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-
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-static int
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-LoadJackLibrary(void)
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-{
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- int retval = 0;
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- if (jack_handle == NULL) {
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- jack_handle = SDL_LoadObject(jack_library);
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- if (jack_handle == NULL) {
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- retval = -1;
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- /* Don't call SDL_SetError(): SDL_LoadObject already did. */
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- } else {
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- retval = load_jack_syms();
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- if (retval < 0) {
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- UnloadJackLibrary();
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- }
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- }
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- }
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- return retval;
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-}
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-
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-#else
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-
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-#define SDL_JACK_SYM(x) JACK_##x = x
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-
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-static void
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-UnloadJackLibrary(void)
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-{
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-}
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-
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-static int
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-LoadJackLibrary(void)
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-{
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- load_jack_syms();
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- return 0;
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-}
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-
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-#endif /* SDL_AUDIO_DRIVER_JACK_DYNAMIC */
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-
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-
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-static int
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-load_jack_syms(void)
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-{
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- SDL_JACK_SYM(jack_client_open);
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- SDL_JACK_SYM(jack_client_close);
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- SDL_JACK_SYM(jack_on_shutdown);
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- SDL_JACK_SYM(jack_activate);
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- SDL_JACK_SYM(jack_deactivate);
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- SDL_JACK_SYM(jack_port_get_buffer);
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- SDL_JACK_SYM(jack_port_unregister);
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- SDL_JACK_SYM(jack_free);
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- SDL_JACK_SYM(jack_get_ports);
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- SDL_JACK_SYM(jack_get_sample_rate);
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- SDL_JACK_SYM(jack_get_buffer_size);
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- SDL_JACK_SYM(jack_port_register);
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- SDL_JACK_SYM(jack_port_by_name);
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- SDL_JACK_SYM(jack_port_name);
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- SDL_JACK_SYM(jack_port_type);
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- SDL_JACK_SYM(jack_connect);
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- SDL_JACK_SYM(jack_set_process_callback);
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- return 0;
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-}
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-
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-
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-static void
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-jackShutdownCallback(void *arg) /* JACK went away; device is lost. */
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-{
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- SDL_AudioDevice *this = (SDL_AudioDevice *) arg;
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- SDL_OpenedAudioDeviceDisconnected(this);
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- SDL_SemPost(this->hidden->iosem); /* unblock the SDL thread. */
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-}
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-
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-// !!! FIXME: implement and register these!
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-//typedef int(* JackSampleRateCallback)(jack_nframes_t nframes, void *arg)
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-//typedef int(* JackBufferSizeCallback)(jack_nframes_t nframes, void *arg)
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-
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-static int
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-jackProcessPlaybackCallback(jack_nframes_t nframes, void *arg)
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-{
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- SDL_AudioDevice *this = (SDL_AudioDevice *) arg;
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- jack_port_t **ports = this->hidden->sdlports;
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- const int total_channels = this->spec.channels;
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- const int total_frames = this->spec.samples;
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- int channelsi;
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-
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- if (!SDL_AtomicGet(&this->enabled)) {
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- /* silence the buffer to avoid repeats and corruption. */
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- SDL_memset(this->hidden->iobuffer, '\0', this->spec.size);
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- }
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-
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- for (channelsi = 0; channelsi < total_channels; channelsi++) {
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- float *dst = (float *) JACK_jack_port_get_buffer(ports[channelsi], nframes);
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- if (dst) {
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- const float *src = ((float *) this->hidden->iobuffer) + channelsi;
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- int framesi;
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- for (framesi = 0; framesi < total_frames; framesi++) {
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- *(dst++) = *src;
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- src += total_channels;
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- }
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- }
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- }
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-
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- SDL_SemPost(this->hidden->iosem); /* tell SDL thread we're done; refill the buffer. */
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- return 0; /* success */
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-}
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-
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-
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-/* This function waits until it is possible to write a full sound buffer */
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-static void
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-JACK_WaitDevice(_THIS)
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-{
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- if (SDL_AtomicGet(&this->enabled)) {
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- if (SDL_SemWait(this->hidden->iosem) == -1) {
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- SDL_OpenedAudioDeviceDisconnected(this);
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- }
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- }
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-}
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-
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-static Uint8 *
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-JACK_GetDeviceBuf(_THIS)
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-{
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- return (Uint8 *) this->hidden->iobuffer;
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-}
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-
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-
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-static int
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-jackProcessCaptureCallback(jack_nframes_t nframes, void *arg)
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-{
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- SDL_AudioDevice *this = (SDL_AudioDevice *) arg;
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- if (SDL_AtomicGet(&this->enabled)) {
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- jack_port_t **ports = this->hidden->sdlports;
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- const int total_channels = this->spec.channels;
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- const int total_frames = this->spec.samples;
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- int channelsi;
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-
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- for (channelsi = 0; channelsi < total_channels; channelsi++) {
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- const float *src = (const float *) JACK_jack_port_get_buffer(ports[channelsi], nframes);
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- if (src) {
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- float *dst = ((float *) this->hidden->iobuffer) + channelsi;
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- int framesi;
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- for (framesi = 0; framesi < total_frames; framesi++) {
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- *dst = *(src++);
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- dst += total_channels;
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- }
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- }
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- }
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- }
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-
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- SDL_SemPost(this->hidden->iosem); /* tell SDL thread we're done; new buffer is ready! */
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- return 0; /* success */
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-}
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-
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-static int
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-JACK_CaptureFromDevice(_THIS, void *buffer, int buflen)
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-{
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- SDL_assert(buflen == this->spec.size); /* we always fill a full buffer. */
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-
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- /* Wait for JACK to fill the iobuffer */
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- if (SDL_SemWait(this->hidden->iosem) == -1) {
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- return -1;
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- }
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-
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- SDL_memcpy(buffer, this->hidden->iobuffer, buflen);
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- return buflen;
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-}
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-
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-static void
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-JACK_FlushCapture(_THIS)
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-{
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- SDL_SemWait(this->hidden->iosem);
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-}
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-
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-
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-static void
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-JACK_CloseDevice(_THIS)
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-{
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- if (this->hidden->client) {
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- JACK_jack_deactivate(this->hidden->client);
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-
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- if (this->hidden->sdlports) {
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- const int channels = this->spec.channels;
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- int i;
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- for (i = 0; i < channels; i++) {
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- JACK_jack_port_unregister(this->hidden->client, this->hidden->sdlports[i]);
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- }
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- SDL_free(this->hidden->sdlports);
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- }
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-
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- JACK_jack_client_close(this->hidden->client);
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- }
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-
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- if (this->hidden->iosem) {
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- SDL_DestroySemaphore(this->hidden->iosem);
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- }
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-
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- SDL_free(this->hidden->iobuffer);
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- SDL_free(this->hidden);
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-}
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-
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-static int
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-JACK_OpenDevice(_THIS, const char *devname)
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-{
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- /* Note that JACK uses "output" for capture devices (they output audio
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- data to us) and "input" for playback (we input audio data to them).
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- Likewise, SDL's playback port will be "output" (we write data out)
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- and capture will be "input" (we read data in). */
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- SDL_bool iscapture = this->iscapture;
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- const unsigned long sysportflags = iscapture ? JackPortIsOutput : JackPortIsInput;
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- const unsigned long sdlportflags = iscapture ? JackPortIsInput : JackPortIsOutput;
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- const JackProcessCallback callback = iscapture ? jackProcessCaptureCallback : jackProcessPlaybackCallback;
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- const char *sdlportstr = iscapture ? "input" : "output";
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- const char **devports = NULL;
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- int *audio_ports;
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- jack_client_t *client = NULL;
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- jack_status_t status;
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- int channels = 0;
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- int ports = 0;
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- int i;
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-
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- /* Initialize all variables that we clean on shutdown */
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- this->hidden = (struct SDL_PrivateAudioData *) SDL_calloc(1, sizeof (*this->hidden));
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- if (this->hidden == NULL) {
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- return SDL_OutOfMemory();
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- }
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-
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- /* !!! FIXME: we _still_ need an API to specify an app name */
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- client = JACK_jack_client_open("SDL", JackNoStartServer, &status, NULL);
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- this->hidden->client = client;
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- if (client == NULL) {
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- return SDL_SetError("Can't open JACK client");
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- }
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-
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- devports = JACK_jack_get_ports(client, NULL, NULL, JackPortIsPhysical | sysportflags);
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- if (!devports || !devports[0]) {
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- return SDL_SetError("No physical JACK ports available");
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- }
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-
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- while (devports[++ports]) {
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- /* spin to count devports */
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- }
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-
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- /* Filter out non-audio ports */
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- audio_ports = SDL_calloc(ports, sizeof *audio_ports);
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- for (i = 0; i < ports; i++) {
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- const jack_port_t *dport = JACK_jack_port_by_name(client, devports[i]);
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- const char *type = JACK_jack_port_type(dport);
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- const int len = SDL_strlen(type);
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- /* See if type ends with "audio" */
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- if (len >= 5 && !SDL_memcmp(type+len-5, "audio", 5)) {
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- audio_ports[channels++] = i;
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- }
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- }
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- if (channels == 0) {
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- return SDL_SetError("No physical JACK ports available");
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- }
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-
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-
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- /* !!! FIXME: docs say about buffer size: "This size may change, clients that depend on it must register a bufsize_callback so they will be notified if it does." */
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-
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- /* Jack pretty much demands what it wants. */
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- this->spec.format = AUDIO_F32SYS;
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- this->spec.freq = JACK_jack_get_sample_rate(client);
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- this->spec.channels = channels;
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- this->spec.samples = JACK_jack_get_buffer_size(client);
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-
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- SDL_CalculateAudioSpec(&this->spec);
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-
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- this->hidden->iosem = SDL_CreateSemaphore(0);
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- if (!this->hidden->iosem) {
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- return -1; /* error was set by SDL_CreateSemaphore */
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- }
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-
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- this->hidden->iobuffer = (float *) SDL_calloc(1, this->spec.size);
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- if (!this->hidden->iobuffer) {
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- return SDL_OutOfMemory();
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- }
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-
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- /* Build SDL's ports, which we will connect to the device ports. */
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- this->hidden->sdlports = (jack_port_t **) SDL_calloc(channels, sizeof (jack_port_t *));
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- if (this->hidden->sdlports == NULL) {
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- return SDL_OutOfMemory();
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- }
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-
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- for (i = 0; i < channels; i++) {
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- char portname[32];
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- SDL_snprintf(portname, sizeof (portname), "sdl_jack_%s_%d", sdlportstr, i);
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- this->hidden->sdlports[i] = JACK_jack_port_register(client, portname, JACK_DEFAULT_AUDIO_TYPE, sdlportflags, 0);
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- if (this->hidden->sdlports[i] == NULL) {
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- return SDL_SetError("jack_port_register failed");
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- }
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- }
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-
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- if (JACK_jack_set_process_callback(client, callback, this) != 0) {
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- return SDL_SetError("JACK: Couldn't set process callback");
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- }
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-
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- JACK_jack_on_shutdown(client, jackShutdownCallback, this);
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-
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- if (JACK_jack_activate(client) != 0) {
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- return SDL_SetError("Failed to activate JACK client");
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- }
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-
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- /* once activated, we can connect all the ports. */
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- for (i = 0; i < channels; i++) {
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- const char *sdlport = JACK_jack_port_name(this->hidden->sdlports[i]);
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- const char *srcport = iscapture ? devports[audio_ports[i]] : sdlport;
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- const char *dstport = iscapture ? sdlport : devports[audio_ports[i]];
|
|
|
- if (JACK_jack_connect(client, srcport, dstport) != 0) {
|
|
|
- return SDL_SetError("Couldn't connect JACK ports: %s => %s", srcport, dstport);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* don't need these anymore. */
|
|
|
- JACK_jack_free(devports);
|
|
|
- SDL_free(audio_ports);
|
|
|
-
|
|
|
- /* We're ready to rock and roll. :-) */
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void
|
|
|
-JACK_Deinitialize(void)
|
|
|
-{
|
|
|
- UnloadJackLibrary();
|
|
|
-}
|
|
|
-
|
|
|
-static SDL_bool
|
|
|
-JACK_Init(SDL_AudioDriverImpl * impl)
|
|
|
-{
|
|
|
- if (LoadJackLibrary() < 0) {
|
|
|
- return SDL_FALSE;
|
|
|
- } else {
|
|
|
- /* Make sure a JACK server is running and available. */
|
|
|
- jack_status_t status;
|
|
|
- jack_client_t *client = JACK_jack_client_open("SDL", JackNoStartServer, &status, NULL);
|
|
|
- if (client == NULL) {
|
|
|
- UnloadJackLibrary();
|
|
|
- return SDL_FALSE;
|
|
|
- }
|
|
|
- JACK_jack_client_close(client);
|
|
|
- }
|
|
|
-
|
|
|
- /* Set the function pointers */
|
|
|
- impl->OpenDevice = JACK_OpenDevice;
|
|
|
- impl->WaitDevice = JACK_WaitDevice;
|
|
|
- impl->GetDeviceBuf = JACK_GetDeviceBuf;
|
|
|
- impl->CloseDevice = JACK_CloseDevice;
|
|
|
- impl->Deinitialize = JACK_Deinitialize;
|
|
|
- impl->CaptureFromDevice = JACK_CaptureFromDevice;
|
|
|
- impl->FlushCapture = JACK_FlushCapture;
|
|
|
- impl->OnlyHasDefaultOutputDevice = SDL_TRUE;
|
|
|
- impl->OnlyHasDefaultCaptureDevice = SDL_TRUE;
|
|
|
- impl->HasCaptureSupport = SDL_TRUE;
|
|
|
-
|
|
|
- return SDL_TRUE; /* this audio target is available. */
|
|
|
-}
|
|
|
-
|
|
|
-AudioBootStrap JACK_bootstrap = {
|
|
|
- "jack", "JACK Audio Connection Kit", JACK_Init, SDL_FALSE
|
|
|
-};
|
|
|
-
|
|
|
-#endif /* SDL_AUDIO_DRIVER_JACK */
|
|
|
-
|
|
|
-/* vi: set ts=4 sw=4 expandtab: */
|
Ozkan Sezer