1 files changed, 401 insertions, 0 deletions
diff --git a/audio/audio_template.h b/audio/audio_template.h
new file mode 100644
index 0000000000..25ea72fd41
--- /dev/null
+++ b/audio/audio_template.h
@@ -0,0 +1,401 @@
+/*
+ * 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 TYPE out
+#define HW glue (HWVoice, Out)
+#define SW glue (SWVoice, Out)
+#else
+#define TYPE in
+#define HW glue (HWVoice, In)
+#define SW glue (SWVoice, In)
+#endif
+
+static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw)
+{
+    glue (audio_pcm_sw_free_resources_, TYPE) (sw);
+    if (sw->name) {
+        qemu_free (sw->name);
+        sw->name = NULL;
+    }
+}
+
+static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw)
+{
+    LIST_INSERT_HEAD (&hw->sw_head, sw, entries);
+}
+
+static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw)
+{
+    LIST_REMOVE (sw, entries);
+}
+
+static void glue (audio_pcm_hw_fini_, TYPE) (HW *hw)
+{
+    if (hw->active) {
+        glue (audio_pcm_hw_free_resources_ ,TYPE) (hw);
+        glue (hw->pcm_ops->fini_, TYPE) (hw);
+        memset (hw, 0, glue (audio_state.drv->voice_size_, TYPE));
+    }
+}
+
+static void glue (audio_pcm_hw_gc_, TYPE) (HW *hw)
+{
+    if (!hw->sw_head.lh_first) {
+        glue (audio_pcm_hw_fini_, TYPE) (hw);
+    }
+}
+
+static HW *glue (audio_pcm_hw_find_any_, TYPE) (HW *hw)
+{
+    return hw ? hw->entries.le_next : glue (hw_head_, TYPE).lh_first;
+}
+
+static HW *glue (audio_pcm_hw_find_any_active_, TYPE) (HW *hw)
+{
+    while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
+        if (hw->active) {
+            return hw;
+        }
+    }
+    return NULL;
+}
+
+static HW *glue (audio_pcm_hw_find_any_active_enabled_, TYPE) (HW *hw)
+{
+    while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
+        if (hw->active && hw->enabled) {
+            return hw;
+        }
+    }
+    return NULL;
+}
+
+static HW *glue (audio_pcm_hw_find_any_passive_, TYPE) (HW *hw)
+{
+    while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
+        if (!hw->active) {
+            return hw;
+        }
+    }
+    return NULL;
+}
+
+static HW *glue (audio_pcm_hw_find_specific_, TYPE) (
+    HW *hw,
+    int freq,
+    int nchannels,
+    audfmt_e fmt
+    )
+{
+    while ((hw = glue (audio_pcm_hw_find_any_active_, TYPE) (hw))) {
+        if (audio_pcm_info_eq (&hw->info, freq, nchannels, fmt)) {
+            return hw;
+        }
+    }
+    return NULL;
+}
+
+static HW *glue (audio_pcm_hw_add_new_, TYPE) (
+    int freq,
+    int nchannels,
+    audfmt_e fmt
+    )
+{
+    HW *hw;
+
+    hw = glue (audio_pcm_hw_find_any_passive_, TYPE) (NULL);
+    if (hw) {
+        hw->pcm_ops = audio_state.drv->pcm_ops;
+        if (!hw->pcm_ops) {
+            return NULL;
+        }
+
+        if (glue (audio_pcm_hw_init_, TYPE) (hw, freq, nchannels, fmt)) {
+            glue (audio_pcm_hw_gc_, TYPE) (hw);
+            return NULL;
+        }
+        else {
+            return hw;
+        }
+    }
+
+    return NULL;
+}
+
+static HW *glue (audio_pcm_hw_add_, TYPE) (
+    int freq,
+    int nchannels,
+    audfmt_e fmt
+    )
+{
+    HW *hw;
+
+    if (glue (audio_state.greedy_, TYPE)) {
+        hw = glue (audio_pcm_hw_add_new_, TYPE) (freq, nchannels, fmt);
+        if (hw) {
+            return hw;
+        }
+    }
+
+    hw = glue (audio_pcm_hw_find_specific_, TYPE) (NULL, freq, nchannels, fmt);
+    if (hw) {
+        return hw;
+    }
+
+    hw = glue (audio_pcm_hw_add_new_, TYPE) (freq, nchannels, fmt);
+    if (hw) {
+        return hw;
+    }
+
+    return glue (audio_pcm_hw_find_any_active_, TYPE) (NULL);
+}
+
+static SW *glue (audio_pcm_create_voice_pair_, TYPE) (
+    const char *name,
+    int freq,
+    int nchannels,
+    audfmt_e fmt
+    )
+{
+    SW *sw;
+    HW *hw;
+    int hw_freq = freq;
+    int hw_nchannels = nchannels;
+    int hw_fmt = fmt;
+
+    if (glue (audio_state.fixed_settings_, TYPE)) {
+        hw_freq = glue (audio_state.fixed_freq_, TYPE);
+        hw_nchannels = glue (audio_state.fixed_channels_, TYPE);
+        hw_fmt = glue (audio_state.fixed_fmt_, TYPE);
+    }
+
+    sw = qemu_mallocz (sizeof (*sw));
+    if (!sw) {
+        goto err1;
+    }
+
+    hw = glue (audio_pcm_hw_add_, TYPE) (hw_freq, hw_nchannels, hw_fmt);
+    if (!hw) {
+        goto err2;
+    }
+
+    glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw);
+
+    if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, freq, nchannels, fmt)) {
+        goto err3;
+    }
+
+    return sw;
+
+err3:
+    glue (audio_pcm_hw_del_sw_, TYPE) (sw);
+    glue (audio_pcm_hw_gc_, TYPE) (hw);
+err2:
+    qemu_free (sw);
+err1:
+    return NULL;
+}
+
+void glue (AUD_close_, TYPE) (SW *sw)
+{
+    if (sw) {
+        glue (audio_pcm_sw_fini_, TYPE) (sw);
+        glue (audio_pcm_hw_del_sw_, TYPE) (sw);
+        glue (audio_pcm_hw_gc_, TYPE) (sw->hw);
+        qemu_free (sw);
+    }
+}
+
+SW *glue (AUD_open_, TYPE) (
+    SW *sw,
+    const char *name,
+    void *callback_opaque ,
+    audio_callback_fn_t callback_fn,
+    int freq,
+    int nchannels,
+    audfmt_e fmt
+    )
+{
+#ifdef DAC
+    int live = 0;
+    SW *old_sw = NULL;
+#endif
+
+    if (!callback_fn) {
+        dolog ("No callback specifed for voice `%s'\n", name);
+        goto fail;
+    }
+
+    if (nchannels != 1 && nchannels != 2) {
+        dolog ("Bogus channel count %d for voice `%s'\n", nchannels, name);
+        goto fail;
+    }
+
+    if (!audio_state.drv) {
+        dolog ("No audio driver defined\n");
+        goto fail;
+    }
+
+    if (sw && audio_pcm_info_eq (&sw->info, freq, nchannels, fmt)) {
+        return sw;
+    }
+
+#ifdef DAC
+    if (audio_state.plive && sw && (!sw->active && !sw->empty)) {
+        live = sw->total_hw_samples_mixed;
+
+#ifdef DEBUG_PLIVE
+        dolog ("Replacing voice %s with %d live samples\n", sw->name, live);
+        dolog ("Old %s freq %d, bits %d, channels %d\n",
+               sw->name, sw->info.freq, sw->info.bits, sw->info.nchannels);
+        dolog ("New %s freq %d, bits %d, channels %d\n",
+               name, freq, (fmt == AUD_FMT_S16 || fmt == AUD_FMT_U16) ? 16 : 8,
+               nchannels);
+#endif
+
+        if (live) {
+            old_sw = sw;
+            old_sw->callback.fn = NULL;
+            sw = NULL;
+        }
+    }
+#endif
+
+    if (!glue (audio_state.fixed_settings_, TYPE) && sw) {
+        glue (AUD_close_, TYPE) (sw);
+        sw = NULL;
+    }
+
+    if (sw) {
+        HW *hw = sw->hw;
+
+        if (!hw) {
+            dolog ("Internal logic error voice %s has no hardware store\n",
+                   name);
+            goto fail;
+        }
+
+        if (glue (audio_pcm_sw_init_, TYPE) (
+                sw,
+                hw,
+                name,
+                freq,
+                nchannels,
+                fmt
+                )) {
+            goto fail;
+        }
+    }
+    else {
+        sw = glue (audio_pcm_create_voice_pair_, TYPE) (
+            name,
+            freq,
+            nchannels,
+            fmt);
+        if (!sw) {
+            dolog ("Failed to create voice %s\n", name);
+            goto fail;
+        }
+    }
+
+    if (sw) {
+        sw->vol = nominal_volume;
+        sw->callback.fn = callback_fn;
+        sw->callback.opaque = callback_opaque;
+
+#ifdef DAC
+        if (live) {
+            int mixed =
+                (live << old_sw->info.shift)
+                * old_sw->info.bytes_per_second
+                / sw->info.bytes_per_second;
+
+#ifdef DEBUG_PLIVE
+            dolog ("Silence will be mixed %d\n", mixed);
+#endif
+            sw->total_hw_samples_mixed += mixed;
+        }
+#endif
+
+#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) (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_time_stamp_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 %lld old %lld\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 (delta * sw->hw->info.freq) / 1000000;
+}
+
+#undef TYPE
+#undef HW
+#undef SW