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[Qemu-devel] [PATCH 43/51] audio: make mixeng optional


From: Kővágó, Zoltán
Subject: [Qemu-devel] [PATCH 43/51] audio: make mixeng optional
Date: Thu, 14 Jan 2016 14:45:56 +0100

Implementation of the previously added mixeng option.

Signed-off-by: Kővágó, Zoltán <address@hidden>
---
 audio/audio.c          | 70 +++++++++++++++++++++++++++++++++++++++++++++-----
 audio/audio_template.h | 22 +++++++++++-----
 2 files changed, 79 insertions(+), 13 deletions(-)

diff --git a/audio/audio.c b/audio/audio.c
index 7c59748..ea3219b 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -793,32 +793,46 @@ static void audio_timer (void *opaque)
  */
 size_t AUD_write(SWVoiceOut *sw, void *buf, size_t size)
 {
+    HWVoiceOut *hw;
+
     if (!sw) {
         /* XXX: Consider options */
         return size;
     }
+    hw = sw->hw;
 
-    if (!sw->hw->enabled) {
+    if (!hw->enabled) {
         dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
         return 0;
     }
 
-    return audio_pcm_sw_write(sw, buf, size);
+    if (hw->s->dev->out->mixeng) {
+        return audio_pcm_sw_write(sw, buf, size);
+    } else {
+        return hw->pcm_ops->write(hw, buf, size);
+    }
 }
 
 size_t AUD_read(SWVoiceIn *sw, void *buf, size_t size)
 {
+    HWVoiceIn *hw;
+
     if (!sw) {
         /* XXX: Consider options */
         return size;
     }
+    hw = sw->hw;
 
-    if (!sw->hw->enabled) {
+    if (!hw->enabled) {
         dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
         return 0;
     }
 
-    return audio_pcm_sw_read(sw, buf, size);
+    if (hw->s->dev->in->mixeng) {
+        return audio_pcm_sw_read(sw, buf, size);
+    } else {
+        return hw->pcm_ops->read(hw, buf, size);
+    }
 }
 
 int AUD_get_buffer_size_out (SWVoiceOut *sw)
@@ -1038,6 +1052,26 @@ static void audio_run_out (AudioState *s)
     HWVoiceOut *hw = NULL;
     SWVoiceOut *sw;
 
+    if (!s->dev->out->mixeng) {
+        while ((hw = audio_pcm_hw_find_any_enabled_out(s, hw))) {
+            /* there is exactly 1 sw for each hw with no mixeng */
+            sw = hw->sw_head.lh_first;
+
+            if (hw->pending_disable) {
+                hw->enabled = 0;
+                hw->pending_disable = 0;
+                if (hw->pcm_ops->enable_out) {
+                    hw->pcm_ops->enable_out(hw, false);
+                }
+            }
+
+            if (sw->active) {
+                sw->callback.fn(sw->callback.opaque, INT_MAX);
+            }
+        }
+        return;
+    }
+
     while ((hw = audio_pcm_hw_find_any_enabled_out(s, hw))) {
         size_t played, live, prev_rpos, free;
         int nb_live, cleanup_required;
@@ -1174,6 +1208,17 @@ static void audio_run_in (AudioState *s)
 {
     HWVoiceIn *hw = NULL;
 
+    if (!s->dev->in->mixeng) {
+        while ((hw = audio_pcm_hw_find_any_enabled_in(s, hw))) {
+            /* there is exactly 1 sw for each hw with no mixeng */
+            SWVoiceIn *sw = hw->sw_head.lh_first;
+            if (sw->active) {
+                sw->callback.fn(sw->callback.opaque, INT_MAX);
+            }
+        }
+        return;
+    }
+
     while ((hw = audio_pcm_hw_find_any_enabled_in(s, hw))) {
         SWVoiceIn *sw;
         size_t captured, min;
@@ -1654,6 +1699,11 @@ CaptureVoiceOut *AUD_add_capture(
         s = QTAILQ_FIRST(&audio_states);
     }
 
+    if (!s->dev->out->mixeng) {
+        dolog("Can't capture with mixeng disabled\n");
+        goto err0;
+    }
+
     if (audio_validate_settings (as)) {
         dolog ("Invalid settings were passed when trying to add capture\n");
         audio_print_settings (as);
@@ -1811,9 +1861,13 @@ QemuOptsList qemu_audiodev_opts = {
 static void validate_per_direction_opts(AudiodevPerDirectionOptions *pdo,
                                         Error **errp)
 {
+    if (!pdo->has_mixeng) {
+        pdo->has_mixeng = true;
+        pdo->mixeng = true;
+    }
     if (!pdo->has_fixed_settings) {
         pdo->has_fixed_settings = true;
-        pdo->fixed_settings = true;
+        pdo->fixed_settings = pdo->mixeng;
     }
     if (!pdo->fixed_settings &&
         (pdo->has_frequency || pdo->has_channels || pdo->has_format)) {
@@ -1821,6 +1875,10 @@ static void 
validate_per_direction_opts(AudiodevPerDirectionOptions *pdo,
                    "You can't use frequency, channels or format with 
fixed-settings=off");
         return;
     }
+    if (!pdo->mixeng && pdo->fixed_settings) {
+        error_setg(errp, "You can't use fixed-settings without mixeng");
+        return;
+    }
 
     if (!pdo->has_frequency) {
         pdo->has_frequency = true;
@@ -1832,7 +1890,7 @@ static void 
validate_per_direction_opts(AudiodevPerDirectionOptions *pdo,
     }
     if (!pdo->has_voices) {
         pdo->has_voices = true;
-        pdo->voices = 1;
+        pdo->voices = pdo->mixeng ? 1 : INT_MAX;
     }
     if (!pdo->has_format) {
         pdo->has_format = true;
diff --git a/audio/audio_template.h b/audio/audio_template.h
index 762efea..f3cbc66 100644
--- a/audio/audio_template.h
+++ b/audio/audio_template.h
@@ -78,15 +78,19 @@ static void glue (audio_pcm_hw_free_resources_, TYPE) (HW 
*hw)
 
 static void glue(audio_pcm_hw_alloc_resources_, TYPE)(HW *hw)
 {
-    size_t samples;
-    if (hw->pcm_ops->glue(buffer_size_, TYPE)) {
-        samples = hw->pcm_ops->glue(buffer_size_, TYPE)(hw);
+    if (hw->s->dev->TYPE->mixeng) {
+        size_t samples;
+        if (hw->pcm_ops->glue(buffer_size_, TYPE)) {
+            samples = hw->pcm_ops->glue(buffer_size_, TYPE)(hw);
+        } else {
+            samples = 1024; /* todo better default */
+        }
+
+        HWBUF = g_malloc0(sizeof(STSampleBuffer) + sizeof(st_sample)*samples);
+        HWBUF->size = samples;
     } else {
-        samples = 1024; /* todo better default */
+        HWBUF = NULL;
     }
-
-    HWBUF = g_malloc0(sizeof(STSampleBuffer) + sizeof(st_sample)*samples);
-    HWBUF->size = samples;
 }
 
 static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
@@ -105,6 +109,10 @@ static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW 
*sw)
 {
     int samples;
 
+    if (!sw->s->dev->TYPE->mixeng) {
+        return 0;
+    }
+
     samples = ((int64_t) sw->HWBUF->size << 32) / sw->ratio;
 
     sw->buf = audio_calloc (AUDIO_FUNC, samples, sizeof (struct st_sample));
-- 
2.7.0




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