/*
- * QEMU SDL audio output driver
- *
- * Copyright (c) 2004 Vassili Karpov (malc)
- *
+ * QEMU SDL audio driver
+ *
+ * Copyright (c) 2004-2005 Vassili Karpov (malc)
+ *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
#include <SDL_thread.h>
#include "vl.h"
-#include "audio/audio_int.h"
-
-typedef struct SDLVoice {
- HWVoice hw;
-} SDLVoice;
-
-#define dolog(...) AUD_log ("sdl", __VA_ARGS__)
-#ifdef DEBUG
-#define ldebug(...) dolog (__VA_ARGS__)
-#else
-#define ldebug(...)
-#endif
-
-#define QC_SDL_SAMPLES "QEMU_SDL_SAMPLES"
+#define AUDIO_CAP "sdl"
+#include "audio_int.h"
-#define errstr() SDL_GetError ()
+typedef struct SDLVoiceOut {
+ HWVoiceOut hw;
+ int live;
+ int rpos;
+ int decr;
+} SDLVoiceOut;
static struct {
int nb_samples;
} glob_sdl;
typedef struct SDLAudioState SDLAudioState;
-static void sdl_hw_run (HWVoice *hw)
+static void GCC_FMT_ATTR (1, 2) sdl_logerr (const char *fmt, ...)
{
- (void) hw;
+ va_list ap;
+
+ va_start (ap, fmt);
+ AUD_vlog (AUDIO_CAP, fmt, ap);
+ va_end (ap);
+
+ AUD_log (AUDIO_CAP, "Reason: %s\n", SDL_GetError ());
}
-static int sdl_lock (SDLAudioState *s)
+static int sdl_lock (SDLAudioState *s, const char *forfn)
{
if (SDL_LockMutex (s->mutex)) {
- dolog ("SDL_LockMutex failed\nReason: %s\n", errstr ());
+ sdl_logerr ("SDL_LockMutex for %s failed\n", forfn);
return -1;
}
return 0;
}
-static int sdl_unlock (SDLAudioState *s)
+static int sdl_unlock (SDLAudioState *s, const char *forfn)
{
if (SDL_UnlockMutex (s->mutex)) {
- dolog ("SDL_UnlockMutex failed\nReason: %s\n", errstr ());
+ sdl_logerr ("SDL_UnlockMutex for %s failed\n", forfn);
return -1;
}
return 0;
}
-static int sdl_post (SDLAudioState *s)
+static int sdl_post (SDLAudioState *s, const char *forfn)
{
if (SDL_SemPost (s->sem)) {
- dolog ("SDL_SemPost failed\nReason: %s\n", errstr ());
+ sdl_logerr ("SDL_SemPost for %s failed\n", forfn);
return -1;
}
return 0;
}
-static int sdl_wait (SDLAudioState *s)
+static int sdl_wait (SDLAudioState *s, const char *forfn)
{
if (SDL_SemWait (s->sem)) {
- dolog ("SDL_SemWait failed\nReason: %s\n", errstr ());
+ sdl_logerr ("SDL_SemWait for %s failed\n", forfn);
return -1;
}
return 0;
}
-static int sdl_unlock_and_post (SDLAudioState *s)
+static int sdl_unlock_and_post (SDLAudioState *s, const char *forfn)
{
- if (sdl_unlock (s))
+ if (sdl_unlock (s, forfn)) {
return -1;
+ }
- return sdl_post (s);
-}
-
-static int sdl_hw_write (SWVoice *sw, void *buf, int len)
-{
- int ret;
- SDLAudioState *s = &glob_sdl;
- sdl_lock (s);
- ret = pcm_hw_write (sw, buf, len);
- sdl_unlock_and_post (s);
- return ret;
+ return sdl_post (s, forfn);
}
-static int AUD_to_sdlfmt (audfmt_e fmt, int *shift)
+static int aud_to_sdlfmt (audfmt_e fmt, int *shift)
{
- *shift = 0;
switch (fmt) {
- case AUD_FMT_S8: return AUDIO_S8;
- case AUD_FMT_U8: return AUDIO_U8;
- case AUD_FMT_S16: *shift = 1; return AUDIO_S16LSB;
- case AUD_FMT_U16: *shift = 1; return AUDIO_U16LSB;
+ case AUD_FMT_S8:
+ *shift = 0;
+ return AUDIO_S8;
+
+ case AUD_FMT_U8:
+ *shift = 0;
+ return AUDIO_U8;
+
+ case AUD_FMT_S16:
+ *shift = 1;
+ return AUDIO_S16LSB;
+
+ case AUD_FMT_U16:
+ *shift = 1;
+ return AUDIO_U16LSB;
+
default:
- dolog ("Internal logic error: Bad audio format %d\nAborting\n", fmt);
- exit (EXIT_FAILURE);
+ dolog ("Internal logic error: Bad audio format %d\n", fmt);
+#ifdef DEBUG_AUDIO
+ abort ();
+#endif
+ return AUDIO_U8;
}
}
-static int sdl_to_audfmt (int fmt)
+static int sdl_to_audfmt (int sdlfmt, audfmt_e *fmt, int *endianess)
{
- switch (fmt) {
- case AUDIO_S8: return AUD_FMT_S8;
- case AUDIO_U8: return AUD_FMT_U8;
- case AUDIO_S16LSB: return AUD_FMT_S16;
- case AUDIO_U16LSB: return AUD_FMT_U16;
+ switch (sdlfmt) {
+ case AUDIO_S8:
+ *endianess = 0;
+ *fmt = AUD_FMT_S8;
+ break;
+
+ case AUDIO_U8:
+ *endianess = 0;
+ *fmt = AUD_FMT_U8;
+ break;
+
+ case AUDIO_S16LSB:
+ *endianess = 0;
+ *fmt = AUD_FMT_S16;
+ break;
+
+ case AUDIO_U16LSB:
+ *endianess = 0;
+ *fmt = AUD_FMT_U16;
+ break;
+
+ case AUDIO_S16MSB:
+ *endianess = 1;
+ *fmt = AUD_FMT_S16;
+ break;
+
+ case AUDIO_U16MSB:
+ *endianess = 1;
+ *fmt = AUD_FMT_U16;
+ break;
+
default:
- dolog ("Internal logic error: Unrecognized SDL audio format %d\n"
- "Aborting\n", fmt);
- exit (EXIT_FAILURE);
+ dolog ("Unrecognized SDL audio format %d\n", sdlfmt);
+ return -1;
}
+
+ return 0;
}
static int sdl_open (SDL_AudioSpec *req, SDL_AudioSpec *obt)
status = SDL_OpenAudio (req, obt);
if (status) {
- dolog ("SDL_OpenAudio failed\nReason: %s\n", errstr ());
+ sdl_logerr ("SDL_OpenAudio failed\n");
}
return status;
}
static void sdl_close (SDLAudioState *s)
{
if (s->initialized) {
- sdl_lock (s);
+ sdl_lock (s, "sdl_close");
s->exit = 1;
- sdl_unlock_and_post (s);
+ sdl_unlock_and_post (s, "sdl_close");
SDL_PauseAudio (1);
SDL_CloseAudio ();
s->initialized = 0;
static void sdl_callback (void *opaque, Uint8 *buf, int len)
{
- SDLVoice *sdl = opaque;
+ SDLVoiceOut *sdl = opaque;
SDLAudioState *s = &glob_sdl;
- HWVoice *hw = &sdl->hw;
- int samples = len >> hw->shift;
+ HWVoiceOut *hw = &sdl->hw;
+ int samples = len >> hw->info.shift;
if (s->exit) {
return;
}
while (samples) {
- int to_mix, live, decr;
+ int to_mix, decr;
/* dolog ("in callback samples=%d\n", samples); */
- sdl_wait (s);
+ sdl_wait (s, "sdl_callback");
if (s->exit) {
return;
}
- sdl_lock (s);
- live = pcm_hw_get_live (hw);
- if (live <= 0)
+ if (sdl_lock (s, "sdl_callback")) {
+ return;
+ }
+
+ if (audio_bug (AUDIO_FUNC, sdl->live < 0 || sdl->live > hw->samples)) {
+ dolog ("sdl->live=%d hw->samples=%d\n",
+ sdl->live, hw->samples);
+ return;
+ }
+
+ if (!sdl->live) {
goto again;
+ }
/* dolog ("in callback live=%d\n", live); */
- to_mix = audio_MIN (samples, live);
+ to_mix = audio_MIN (samples, sdl->live);
decr = to_mix;
while (to_mix) {
int chunk = audio_MIN (to_mix, hw->samples - hw->rpos);
/* dolog ("in callback to_mix %d, chunk %d\n", to_mix, chunk); */
hw->clip (buf, src, chunk);
- memset (src, 0, chunk * sizeof (st_sample_t));
- hw->rpos = (hw->rpos + chunk) % hw->samples;
+ mixeng_clear (src, chunk);
+ sdl->rpos = (sdl->rpos + chunk) % hw->samples;
to_mix -= chunk;
- buf += chunk << hw->shift;
+ buf += chunk << hw->info.shift;
}
samples -= decr;
- pcm_hw_dec_live (hw, decr);
+ sdl->live -= decr;
+ sdl->decr += decr;
again:
- sdl_unlock (s);
+ if (sdl_unlock (s, "sdl_callback")) {
+ return;
+ }
}
/* dolog ("done len=%d\n", len); */
}
-static void sdl_hw_fini (HWVoice *hw)
+static int sdl_write_out (SWVoiceOut *sw, void *buf, int len)
+{
+ return audio_pcm_sw_write (sw, buf, len);
+}
+
+static int sdl_run_out (HWVoiceOut *hw)
{
- ldebug ("sdl_hw_fini %d fixed=%d\n",
- glob_sdl.initialized, audio_state.fixed_format);
+ int decr, live;
+ SDLVoiceOut *sdl = (SDLVoiceOut *) hw;
+ SDLAudioState *s = &glob_sdl;
+
+ if (sdl_lock (s, "sdl_callback")) {
+ return 0;
+ }
+
+ live = audio_pcm_hw_get_live_out (hw);
+
+ if (sdl->decr > live) {
+ ldebug ("sdl->decr %d live %d sdl->live %d\n",
+ sdl->decr,
+ live,
+ sdl->live);
+ }
+
+ decr = audio_MIN (sdl->decr, live);
+ sdl->decr -= decr;
+
+ sdl->live = live - decr;
+ hw->rpos = sdl->rpos;
+
+ if (sdl->live > 0) {
+ sdl_unlock_and_post (s, "sdl_callback");
+ }
+ else {
+ sdl_unlock (s, "sdl_callback");
+ }
+ return decr;
+}
+
+static void sdl_fini_out (HWVoiceOut *hw)
+{
+ (void) hw;
+
sdl_close (&glob_sdl);
}
-static int sdl_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+static int sdl_init_out (HWVoiceOut *hw, audsettings_t *as)
{
- SDLVoice *sdl = (SDLVoice *) hw;
+ SDLVoiceOut *sdl = (SDLVoiceOut *) hw;
SDLAudioState *s = &glob_sdl;
SDL_AudioSpec req, obt;
int shift;
+ int endianess;
+ int err;
+ audfmt_e effective_fmt;
+ audsettings_t obt_as;
- ldebug ("sdl_hw_init %d freq=%d fixed=%d\n",
- s->initialized, freq, audio_state.fixed_format);
-
- if (nchannels != 2) {
- dolog ("Bogus channel count %d\n", nchannels);
- return -1;
- }
+ shift <<= as->nchannels == 2;
- req.freq = freq;
- req.format = AUD_to_sdlfmt (fmt, &shift);
- req.channels = nchannels;
+ req.freq = as->freq;
+ req.format = aud_to_sdlfmt (as->fmt, &shift);
+ req.channels = as->nchannels;
req.samples = conf.nb_samples;
- shift <<= nchannels == 2;
-
req.callback = sdl_callback;
req.userdata = sdl;
- if (sdl_open (&req, &obt))
+ if (sdl_open (&req, &obt)) {
return -1;
+ }
- hw->freq = obt.freq;
- hw->fmt = sdl_to_audfmt (obt.format);
- hw->nchannels = obt.channels;
- hw->bufsize = obt.samples << shift;
+ err = sdl_to_audfmt (obt.format, &effective_fmt, &endianess);
+ if (err) {
+ sdl_close (s);
+ return -1;
+ }
+
+ obt_as.freq = obt.freq;
+ obt_as.nchannels = obt.channels;
+ obt_as.fmt = effective_fmt;
+
+ audio_pcm_init_info (
+ &hw->info,
+ &obt_as,
+ audio_need_to_swap_endian (endianess)
+ );
+ hw->samples = obt.samples;
s->initialized = 1;
s->exit = 0;
return 0;
}
-static int sdl_hw_ctl (HWVoice *hw, int cmd, ...)
+static int sdl_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
(void) hw;
static void *sdl_audio_init (void)
{
SDLAudioState *s = &glob_sdl;
- conf.nb_samples = audio_get_conf_int (QC_SDL_SAMPLES, conf.nb_samples);
if (SDL_InitSubSystem (SDL_INIT_AUDIO)) {
- dolog ("SDL failed to initialize audio subsystem\nReason: %s\n",
- errstr ());
+ sdl_logerr ("SDL failed to initialize audio subsystem\n");
return NULL;
}
s->mutex = SDL_CreateMutex ();
if (!s->mutex) {
- dolog ("Failed to create SDL mutex\nReason: %s\n", errstr ());
+ sdl_logerr ("Failed to create SDL mutex\n");
SDL_QuitSubSystem (SDL_INIT_AUDIO);
return NULL;
}
s->sem = SDL_CreateSemaphore (0);
if (!s->sem) {
- dolog ("Failed to create SDL semaphore\nReason: %s\n", errstr ());
+ sdl_logerr ("Failed to create SDL semaphore\n");
SDL_DestroyMutex (s->mutex);
SDL_QuitSubSystem (SDL_INIT_AUDIO);
return NULL;
SDL_QuitSubSystem (SDL_INIT_AUDIO);
}
-struct pcm_ops sdl_pcm_ops = {
- sdl_hw_init,
- sdl_hw_fini,
- sdl_hw_run,
- sdl_hw_write,
- sdl_hw_ctl
+static struct audio_option sdl_options[] = {
+ {"SAMPLES", AUD_OPT_INT, &conf.nb_samples,
+ "Size of SDL buffer in samples", NULL, 0},
+ {NULL, 0, NULL, NULL, NULL, 0}
+};
+
+static struct audio_pcm_ops sdl_pcm_ops = {
+ sdl_init_out,
+ sdl_fini_out,
+ sdl_run_out,
+ sdl_write_out,
+ sdl_ctl_out,
+
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL
};
-struct audio_output_driver sdl_output_driver = {
- "sdl",
- sdl_audio_init,
- sdl_audio_fini,
- &sdl_pcm_ops,
- 1,
- 1,
- sizeof (SDLVoice)
+struct audio_driver sdl_audio_driver = {
+ INIT_FIELD (name = ) "sdl",
+ INIT_FIELD (descr = ) "SDL http://www.libsdl.org",
+ INIT_FIELD (options = ) sdl_options,
+ INIT_FIELD (init = ) sdl_audio_init,
+ INIT_FIELD (fini = ) sdl_audio_fini,
+ INIT_FIELD (pcm_ops = ) &sdl_pcm_ops,
+ INIT_FIELD (can_be_default = ) 1,
+ INIT_FIELD (max_voices_out = ) 1,
+ INIT_FIELD (max_voices_in = ) 0,
+ INIT_FIELD (voice_size_out = ) sizeof (SDLVoiceOut),
+ INIT_FIELD (voice_size_in = ) 0
};
projects / qemu / blobdiff