1 files changed, 568 insertions, 0 deletions

diff --git a/audio/audio_template.h b/audio/audio_template.h
new file mode 100644
index 000000000..c6714946a
--- /dev/null
+++ b/audio/audio_template.h
@@ -0,0 +1,568 @@
+/*
+ * QEMU Audio subsystem header
+ *
+ * Copyright (c) 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
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifdef DAC
+#define NAME "playback"
+#define HWBUF hw->mix_buf
+#define TYPE out
+#define HW HWVoiceOut
+#define SW SWVoiceOut
+#else
+#define NAME "capture"
+#define TYPE in
+#define HW HWVoiceIn
+#define SW SWVoiceIn
+#define HWBUF hw->conv_buf
+#endif
+
+static void glue(audio_init_nb_voices_, TYPE)(AudioState *s,
+                                              struct audio_driver *drv)
+{
+    int max_voices = glue (drv->max_voices_, TYPE);
+    int voice_size = glue (drv->voice_size_, TYPE);
+
+    if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
+        if (!max_voices) {
+#ifdef DAC
+            dolog ("Driver `%s' does not support " NAME "\n", drv->name);
+#endif
+        } else {
+            dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n",
+                   drv->name,
+                   glue (s->nb_hw_voices_, TYPE),
+                   max_voices);
+        }
+        glue (s->nb_hw_voices_, TYPE) = max_voices;
+    }
+
+    if (audio_bug(__func__, !voice_size && max_voices)) {
+        dolog ("drv=`%s' voice_size=0 max_voices=%d\n",
+               drv->name, max_voices);
+        glue (s->nb_hw_voices_, TYPE) = 0;
+    }
+
+    if (audio_bug(__func__, voice_size && !max_voices)) {
+        dolog ("drv=`%s' voice_size=%d max_voices=0\n",
+               drv->name, voice_size);
+    }
+}
+
+static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw)
+{
+    g_free(hw->buf_emul);
+    g_free (HWBUF);
+    HWBUF = NULL;
+}
+
+static void glue(audio_pcm_hw_alloc_resources_, TYPE)(HW *hw)
+{
+    if (glue(audio_get_pdo_, TYPE)(hw->s->dev)->mixing_engine) {
+        size_t samples = hw->samples;
+        if (audio_bug(__func__, samples == 0)) {
+            dolog("Attempted to allocate empty buffer\n");
+        }
+
+        HWBUF = g_malloc0(sizeof(STSampleBuffer) + sizeof(st_sample) * samples);
+        HWBUF->size = samples;
+    } else {
+        HWBUF = NULL;
+    }
+}
+
+static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
+{
+    g_free (sw->buf);
+
+    if (sw->rate) {
+        st_rate_stop (sw->rate);
+    }
+
+    sw->buf = NULL;
+    sw->rate = NULL;
+}
+
+static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw)
+{
+    int samples;
+
+    if (!glue(audio_get_pdo_, TYPE)(sw->s->dev)->mixing_engine) {
+        return 0;
+    }
+
+    samples = ((int64_t) sw->HWBUF->size << 32) / sw->ratio;
+
+    sw->buf = audio_calloc(__func__, samples, sizeof(struct st_sample));
+    if (!sw->buf) {
+        dolog ("Could not allocate buffer for `%s' (%d samples)\n",
+               SW_NAME (sw), samples);
+        return -1;
+    }
+
+#ifdef DAC
+    sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq);
+#else
+    sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq);
+#endif
+    if (!sw->rate) {
+        g_free (sw->buf);
+        sw->buf = NULL;
+        return -1;
+    }
+    return 0;
+}
+
+static int glue (audio_pcm_sw_init_, TYPE) (
+    SW *sw,
+    HW *hw,
+    const char *name,
+    struct audsettings *as
+    )
+{
+    int err;
+
+    audio_pcm_init_info (&sw->info, as);
+    sw->hw = hw;
+    sw->active = 0;
+#ifdef DAC
+    sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
+    sw->total_hw_samples_mixed = 0;
+    sw->empty = 1;
+#else
+    sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
+#endif
+
+    if (sw->info.is_float) {
+#ifdef DAC
+        sw->conv = mixeng_conv_float[sw->info.nchannels == 2];
+#else
+        sw->clip = mixeng_clip_float[sw->info.nchannels == 2];
+#endif
+    } else {
+#ifdef DAC
+        sw->conv = mixeng_conv
+#else
+        sw->clip = mixeng_clip
+#endif
+            [sw->info.nchannels == 2]
+            [sw->info.is_signed]
+            [sw->info.swap_endianness]
+            [audio_bits_to_index(sw->info.bits)];
+    }
+
+    sw->name = g_strdup (name);
+    err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw);
+    if (err) {
+        g_free (sw->name);
+        sw->name = NULL;
+    }
+    return err;
+}
+
+static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw)
+{
+    glue (audio_pcm_sw_free_resources_, TYPE) (sw);
+    g_free (sw->name);
+    sw->name = NULL;
+}
+
+static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw)
+{
+    QLIST_INSERT_HEAD (&hw->sw_head, sw, entries);
+}
+
+static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw)
+{
+    QLIST_REMOVE (sw, entries);
+}
+
+static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp)
+{
+    HW *hw = *hwp;
+    AudioState *s = hw->s;
+
+    if (!hw->sw_head.lh_first) {
+#ifdef DAC
+        audio_detach_capture(hw);
+#endif
+        QLIST_REMOVE(hw, entries);
+        glue(hw->pcm_ops->fini_, TYPE) (hw);
+        glue(s->nb_hw_voices_, TYPE) += 1;
+        glue(audio_pcm_hw_free_resources_ , TYPE) (hw);
+        g_free(hw);
+        *hwp = NULL;
+    }
+}
+
+static HW *glue(audio_pcm_hw_find_any_, TYPE)(AudioState *s, HW *hw)
+{
+    return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first;
+}
+
+static HW *glue(audio_pcm_hw_find_any_enabled_, TYPE)(AudioState *s, HW *hw)
+{
+    while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) {
+        if (hw->enabled) {
+            return hw;
+        }
+    }
+    return NULL;
+}
+
+static HW *glue(audio_pcm_hw_find_specific_, TYPE)(AudioState *s, HW *hw,
+                                                   struct audsettings *as)
+{
+    while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) {
+        if (audio_pcm_info_eq (&hw->info, as)) {
+            return hw;
+        }
+    }
+    return NULL;
+}
+
+static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s,
+                                             struct audsettings *as)
+{
+    HW *hw;
+    struct audio_driver *drv = s->drv;
+
+    if (!glue (s->nb_hw_voices_, TYPE)) {
+        return NULL;
+    }
+
+    if (audio_bug(__func__, !drv)) {
+        dolog ("No host audio driver\n");
+        return NULL;
+    }
+
+    if (audio_bug(__func__, !drv->pcm_ops)) {
+        dolog ("Host audio driver without pcm_ops\n");
+        return NULL;
+    }
+
+    hw = audio_calloc(__func__, 1, glue(drv->voice_size_, TYPE));
+    if (!hw) {
+        dolog ("Can not allocate voice `%s' size %d\n",
+               drv->name, glue (drv->voice_size_, TYPE));
+        return NULL;
+    }
+
+    hw->s = s;
+    hw->pcm_ops = drv->pcm_ops;
+
+    QLIST_INIT (&hw->sw_head);
+#ifdef DAC
+    QLIST_INIT (&hw->cap_head);
+#endif
+    if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) {
+        goto err0;
+    }
+
+    if (audio_bug(__func__, hw->samples <= 0)) {
+        dolog("hw->samples=%zd\n", hw->samples);
+        goto err1;
+    }
+
+    if (hw->info.is_float) {
+#ifdef DAC
+        hw->clip = mixeng_clip_float[hw->info.nchannels == 2];
+#else
+        hw->conv = mixeng_conv_float[hw->info.nchannels == 2];
+#endif
+    } else {
+#ifdef DAC
+        hw->clip = mixeng_clip
+#else
+        hw->conv = mixeng_conv
+#endif
+            [hw->info.nchannels == 2]
+            [hw->info.is_signed]
+            [hw->info.swap_endianness]
+            [audio_bits_to_index(hw->info.bits)];
+    }
+
+    glue(audio_pcm_hw_alloc_resources_, TYPE)(hw);
+
+    QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries);
+    glue (s->nb_hw_voices_, TYPE) -= 1;
+#ifdef DAC
+    audio_attach_capture (hw);
+#endif
+    return hw;
+
+ err1:
+    glue (hw->pcm_ops->fini_, TYPE) (hw);
+ err0:
+    g_free (hw);
+    return NULL;
+}
+
+AudiodevPerDirectionOptions *glue(audio_get_pdo_, TYPE)(Audiodev *dev)
+{
+    switch (dev->driver) {
+    case AUDIODEV_DRIVER_NONE:
+        return dev->u.none.TYPE;
+    case AUDIODEV_DRIVER_ALSA:
+        return qapi_AudiodevAlsaPerDirectionOptions_base(dev->u.alsa.TYPE);
+    case AUDIODEV_DRIVER_COREAUDIO:
+        return qapi_AudiodevCoreaudioPerDirectionOptions_base(
+            dev->u.coreaudio.TYPE);
+    case AUDIODEV_DRIVER_DSOUND:
+        return dev->u.dsound.TYPE;
+    case AUDIODEV_DRIVER_JACK:
+        return qapi_AudiodevJackPerDirectionOptions_base(dev->u.jack.TYPE);
+    case AUDIODEV_DRIVER_OSS:
+        return qapi_AudiodevOssPerDirectionOptions_base(dev->u.oss.TYPE);
+    case AUDIODEV_DRIVER_PA:
+        return qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.TYPE);
+    case AUDIODEV_DRIVER_SDL:
+        return qapi_AudiodevSdlPerDirectionOptions_base(dev->u.sdl.TYPE);
+    case AUDIODEV_DRIVER_SPICE:
+        return dev->u.spice.TYPE;
+    case AUDIODEV_DRIVER_WAV:
+        return dev->u.wav.TYPE;
+
+    case AUDIODEV_DRIVER__MAX:
+        break;
+    }
+    abort();
+}
+
+static HW *glue(audio_pcm_hw_add_, TYPE)(AudioState *s, struct audsettings *as)
+{
+    HW *hw;
+    AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev);
+
+    if (!pdo->mixing_engine || pdo->fixed_settings) {
+        hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as);
+        if (!pdo->mixing_engine || hw) {
+            return hw;
+        }
+    }
+
+    hw = glue(audio_pcm_hw_find_specific_, TYPE)(s, NULL, as);
+    if (hw) {
+        return hw;
+    }
+
+    hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as);
+    if (hw) {
+        return hw;
+    }
+
+    return glue(audio_pcm_hw_find_any_, TYPE)(s, NULL);
+}
+
+static SW *glue(audio_pcm_create_voice_pair_, TYPE)(
+    AudioState *s,
+    const char *sw_name,
+    struct audsettings *as
+    )
+{
+    SW *sw;
+    HW *hw;
+    struct audsettings hw_as;
+    AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev);
+
+    if (pdo->fixed_settings) {
+        hw_as = audiodev_to_audsettings(pdo);
+    } else {
+        hw_as = *as;
+    }
+
+    sw = audio_calloc(__func__, 1, sizeof(*sw));
+    if (!sw) {
+        dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
+               sw_name ? sw_name : "unknown", sizeof (*sw));
+        goto err1;
+    }
+    sw->s = s;
+
+    hw = glue(audio_pcm_hw_add_, TYPE)(s, &hw_as);
+    if (!hw) {
+        goto err2;
+    }
+
+    glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw);
+
+    if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
+        goto err3;
+    }
+
+    return sw;
+
+err3:
+    glue (audio_pcm_hw_del_sw_, TYPE) (sw);
+    glue (audio_pcm_hw_gc_, TYPE) (&hw);
+err2:
+    g_free (sw);
+err1:
+    return NULL;
+}
+
+static void glue (audio_close_, TYPE) (SW *sw)
+{
+    glue (audio_pcm_sw_fini_, TYPE) (sw);
+    glue (audio_pcm_hw_del_sw_, TYPE) (sw);
+    glue (audio_pcm_hw_gc_, TYPE) (&sw->hw);
+    g_free (sw);
+}
+
+void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
+{
+    if (sw) {
+        if (audio_bug(__func__, !card)) {
+            dolog ("card=%p\n", card);
+            return;
+        }
+
+        glue (audio_close_, TYPE) (sw);
+    }
+}
+
+SW *glue (AUD_open_, TYPE) (
+    QEMUSoundCard *card,
+    SW *sw,
+    const char *name,
+    void *callback_opaque ,
+    audio_callback_fn callback_fn,
+    struct audsettings *as
+    )
+{
+    AudioState *s;
+    AudiodevPerDirectionOptions *pdo;
+
+    if (audio_bug(__func__, !card || !name || !callback_fn || !as)) {
+        dolog ("card=%p name=%p callback_fn=%p as=%p\n",
+               card, name, callback_fn, as);
+        goto fail;
+    }
+
+    s = card->state;
+    pdo = glue(audio_get_pdo_, TYPE)(s->dev);
+
+    ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
+            name, as->freq, as->nchannels, as->fmt);
+
+    if (audio_bug(__func__, audio_validate_settings(as))) {
+        audio_print_settings (as);
+        goto fail;
+    }
+
+    if (audio_bug(__func__, !s->drv)) {
+        dolog ("Can not open `%s' (no host audio driver)\n", name);
+        goto fail;
+    }
+
+    if (sw && audio_pcm_info_eq (&sw->info, as)) {
+        return sw;
+    }
+
+    if (!pdo->fixed_settings && sw) {
+        glue (AUD_close_, TYPE) (card, sw);
+        sw = NULL;
+    }
+
+    if (sw) {
+        HW *hw = sw->hw;
+
+        if (!hw) {
+            dolog ("Internal logic error voice `%s' has no hardware store\n",
+                   SW_NAME (sw));
+            goto fail;
+        }
+
+        glue (audio_pcm_sw_fini_, TYPE) (sw);
+        if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
+            goto fail;
+        }
+    } else {
+        sw = glue(audio_pcm_create_voice_pair_, TYPE)(s, name, as);
+        if (!sw) {
+            dolog ("Failed to create voice `%s'\n", name);
+            return NULL;
+        }
+    }
+
+    sw->card = card;
+    sw->vol = nominal_volume;
+    sw->callback.fn = callback_fn;
+    sw->callback.opaque = callback_opaque;
+
+#ifdef DEBUG_AUDIO
+    dolog ("%s\n", name);
+    audio_pcm_print_info ("hw", &sw->hw->info);
+    audio_pcm_print_info ("sw", &sw->info);
+#endif
+
+    return sw;
+
+ fail:
+    glue (AUD_close_, TYPE) (card, sw);
+    return NULL;
+}
+
+int glue (AUD_is_active_, TYPE) (SW *sw)
+{
+    return sw ? sw->active : 0;
+}
+
+void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
+{
+    if (!sw) {
+        return;
+    }
+
+    ts->old_ts = sw->hw->ts_helper;
+}
+
+uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
+{
+    uint64_t delta, cur_ts, old_ts;
+
+    if (!sw) {
+        return 0;
+    }
+
+    cur_ts = sw->hw->ts_helper;
+    old_ts = ts->old_ts;
+    /* dolog ("cur %" PRId64 " old %" PRId64 "\n", cur_ts, old_ts); */
+
+    if (cur_ts >= old_ts) {
+        delta = cur_ts - old_ts;
+    } else {
+        delta = UINT64_MAX - old_ts + cur_ts;
+    }
+
+    if (!delta) {
+        return 0;
+    }
+
+    return muldiv64 (delta, sw->hw->info.freq, 1000000);
+}
+
+#undef TYPE
+#undef HW
+#undef SW
+#undef HWBUF
+#undef NAME