SDL_AudioDeviceID devid;
} SDLVoiceOut;
+typedef struct SDLVoiceIn {
+ HWVoiceIn hw;
+ int exit;
+ int initialized;
+ Audiodev *dev;
+ SDL_AudioDeviceID devid;
+} SDLVoiceIn;
+
static void GCC_FMT_ATTR (1, 2) sdl_logerr (const char *fmt, ...)
{
va_list ap;
}
}
+static void sdl_close_in(SDLVoiceIn *sdl)
+{
+ if (sdl->initialized) {
+ SDL_LockAudioDevice(sdl->devid);
+ sdl->exit = 1;
+ SDL_UnlockAudioDevice(sdl->devid);
+ SDL_PauseAudioDevice(sdl->devid, 1);
+ sdl->initialized = 0;
+ }
+ if (sdl->devid) {
+ SDL_CloseAudioDevice(sdl->devid);
+ sdl->devid = 0;
+ }
+}
+
+static void sdl_callback_in(void *opaque, Uint8 *buf, int len)
+{
+ SDLVoiceIn *sdl = opaque;
+ HWVoiceIn *hw = &sdl->hw;
+
+ if (sdl->exit) {
+ return;
+ }
+
+ /* dolog("callback_in: len=%d pending=%zu\n", len, hw->pending_emul); */
+
+ while (hw->pending_emul < hw->size_emul && len) {
+ size_t read_len = MIN(len, MIN(hw->size_emul - hw->pos_emul,
+ hw->size_emul - hw->pending_emul));
+
+ memcpy(hw->buf_emul + hw->pos_emul, buf, read_len);
+
+ hw->pending_emul += read_len;
+ hw->pos_emul = (hw->pos_emul + read_len) % hw->size_emul;
+ len -= read_len;
+ buf += read_len;
+ }
+}
+
#define SDL_WRAPPER_FUNC(name, ret_type, args_decl, args, dir) \
static ret_type glue(sdl_, name)args_decl \
{ \
return ret; \
}
+#define SDL_WRAPPER_VOID_FUNC(name, args_decl, args, dir) \
+ static void glue(sdl_, name)args_decl \
+ { \
+ glue(SDLVoice, dir) *sdl = (glue(SDLVoice, dir) *)hw; \
+ \
+ SDL_LockAudioDevice(sdl->devid); \
+ glue(audio_generic_, name)args; \
+ SDL_UnlockAudioDevice(sdl->devid); \
+ }
+
SDL_WRAPPER_FUNC(get_buffer_out, void *, (HWVoiceOut *hw, size_t *size),
(hw, size), Out)
SDL_WRAPPER_FUNC(put_buffer_out, size_t,
(HWVoiceOut *hw, void *buf, size_t size), (hw, buf, size), Out)
SDL_WRAPPER_FUNC(write, size_t,
(HWVoiceOut *hw, void *buf, size_t size), (hw, buf, size), Out)
+SDL_WRAPPER_FUNC(read, size_t, (HWVoiceIn *hw, void *buf, size_t size),
+ (hw, buf, size), In)
+SDL_WRAPPER_FUNC(get_buffer_in, void *, (HWVoiceIn *hw, size_t *size),
+ (hw, size), In)
+SDL_WRAPPER_VOID_FUNC(put_buffer_in, (HWVoiceIn *hw, void *buf, size_t size),
+ (hw, buf, size), In)
#undef SDL_WRAPPER_FUNC
+#undef SDL_WRAPPER_VOID_FUNC
static void sdl_fini_out(HWVoiceOut *hw)
{
SDL_PauseAudioDevice(sdl->devid, !enable);
}
+static void sdl_fini_in(HWVoiceIn *hw)
+{
+ SDLVoiceIn *sdl = (SDLVoiceIn *)hw;
+
+ sdl_close_in(sdl);
+}
+
+static int sdl_init_in(HWVoiceIn *hw, audsettings *as, void *drv_opaque)
+{
+ SDLVoiceIn *sdl = (SDLVoiceIn *)hw;
+ SDL_AudioSpec req, obt;
+ int endianness;
+ int err;
+ AudioFormat effective_fmt;
+ Audiodev *dev = drv_opaque;
+ AudiodevSdlPerDirectionOptions *spdo = dev->u.sdl.in;
+ struct audsettings obt_as;
+
+ req.freq = as->freq;
+ req.format = aud_to_sdlfmt(as->fmt);
+ req.channels = as->nchannels;
+ /* SDL samples are QEMU frames */
+ req.samples = audio_buffer_frames(
+ qapi_AudiodevSdlPerDirectionOptions_base(spdo), as, 11610);
+ req.callback = sdl_callback_in;
+ req.userdata = sdl;
+
+ sdl->dev = dev;
+ sdl->devid = sdl_open(&req, &obt, 1);
+ if (!sdl->devid) {
+ return -1;
+ }
+
+ err = sdl_to_audfmt(obt.format, &effective_fmt, &endianness);
+ if (err) {
+ sdl_close_in(sdl);
+ return -1;
+ }
+
+ obt_as.freq = obt.freq;
+ obt_as.nchannels = obt.channels;
+ obt_as.fmt = effective_fmt;
+ obt_as.endianness = endianness;
+
+ audio_pcm_init_info(&hw->info, &obt_as);
+ hw->samples = (spdo->has_buffer_count ? spdo->buffer_count : 4) *
+ obt.samples;
+ hw->size_emul = hw->samples * hw->info.bytes_per_frame;
+ hw->buf_emul = g_malloc(hw->size_emul);
+ hw->pos_emul = hw->pending_emul = 0;
+
+ sdl->initialized = 1;
+ sdl->exit = 0;
+ return 0;
+}
+
+static void sdl_enable_in(HWVoiceIn *hw, bool enable)
+{
+ SDLVoiceIn *sdl = (SDLVoiceIn *)hw;
+
+ SDL_PauseAudioDevice(sdl->devid, !enable);
+}
+
static void *sdl_audio_init(Audiodev *dev)
{
if (SDL_InitSubSystem (SDL_INIT_AUDIO)) {
/* wrapper for audio_generic_put_buffer_out */
.put_buffer_out = sdl_put_buffer_out,
.enable_out = sdl_enable_out,
+ .init_in = sdl_init_in,
+ .fini_in = sdl_fini_in,
+ /* wrapper for audio_generic_read */
+ .read = sdl_read,
+ /* wrapper for audio_generic_get_buffer_in */
+ .get_buffer_in = sdl_get_buffer_in,
+ /* wrapper for audio_generic_put_buffer_in */
+ .put_buffer_in = sdl_put_buffer_in,
+ .enable_in = sdl_enable_in,
};
static struct audio_driver sdl_audio_driver = {
.pcm_ops = &sdl_pcm_ops,
.can_be_default = 1,
.max_voices_out = 1,
- .max_voices_in = 0,
- .voice_size_out = sizeof (SDLVoiceOut),
- .voice_size_in = 0
+ .max_voices_in = 1,
+ .voice_size_out = sizeof(SDLVoiceOut),
+ .voice_size_in = sizeof(SDLVoiceIn),
};
static void register_audio_sdl(void)