[PATCH 1/4] winealsa: Move get_render_buffer to the unixlib.

[Huw Davies]

Signed-off-by: Huw Davies 
---
 dlls/winealsa.drv/alsa.c     | 48 ++++++++++++++++++++++++++++++++
 dlls/winealsa.drv/mmdevdrv.c | 54 ++++--------------------------------
 dlls/winealsa.drv/unixlib.h  |  9 ++++++
 3 files changed, 63 insertions(+), 48 deletions(-)

diff --git a/dlls/winealsa.drv/alsa.c b/dlls/winealsa.drv/alsa.c
index d7c6ae7779c..57a605b6bdf 100644
--- a/dlls/winealsa.drv/alsa.c
+++ b/dlls/winealsa.drv/alsa.c
@@ -1587,6 +1587,53 @@ static NTSTATUS timer_loop(void *args)
     return STATUS_SUCCESS;
 }

+static NTSTATUS get_render_buffer(void *args)
+{
+    struct get_render_buffer_params *params = args;
+    struct alsa_stream *stream = params->stream;
+    UINT32 write_pos, frames = params->frames;
+    SIZE_T size;
+
+    alsa_lock(stream);
+
+    if(stream->getbuf_last)
+        return alsa_unlock_result(stream, &params->result, AUDCLNT_E_OUT_OF_ORDER);
+
+    if(!frames)
+        return alsa_unlock_result(stream, &params->result, S_OK);
+
+    /* held_frames == GetCurrentPadding_nolock(); */
+    if(stream->held_frames + frames > stream->bufsize_frames)
+        return alsa_unlock_result(stream, &params->result, AUDCLNT_E_BUFFER_TOO_LARGE);
+
+    write_pos = stream->wri_offs_frames;
+    if(write_pos + frames > stream->bufsize_frames){
+        if(stream->tmp_buffer_frames < frames){
+            if(stream->tmp_buffer){
+                size = 0;
+                NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, &size, MEM_RELEASE);
+                stream->tmp_buffer = NULL;
+            }
+            size = frames * stream->fmt->nBlockAlign;
+            if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, 0, &size,
+                                       MEM_COMMIT, PAGE_READWRITE)){
+                stream->tmp_buffer_frames = 0;
+                return alsa_unlock_result(stream, &params->result, E_OUTOFMEMORY);
+            }
+            stream->tmp_buffer_frames = frames;
+        }
+        *params->data = stream->tmp_buffer;
+        stream->getbuf_last = -frames;
+    }else{
+        *params->data = stream->local_buffer + write_pos * stream->fmt->nBlockAlign;
+        stream->getbuf_last = frames;
+    }
+
+    silence_buffer(stream, *params->data, frames);
+
+    return alsa_unlock_result(stream, &params->result, S_OK);
+}
+
 static NTSTATUS is_format_supported(void *args)
 {
     struct is_format_supported_params *params = args;
@@ -1918,6 +1965,7 @@ unixlib_entry_t __wine_unix_call_funcs[] =
     stop,
     reset,
     timer_loop,
+    get_render_buffer,
     is_format_supported,
     get_mix_format,
     get_buffer_size,
diff --git a/dlls/winealsa.drv/mmdevdrv.c b/dlls/winealsa.drv/mmdevdrv.c
index 7a99a6b5d43..5d99ede8a4f 100644
--- a/dlls/winealsa.drv/mmdevdrv.c
+++ b/dlls/winealsa.drv/mmdevdrv.c
@@ -1297,9 +1297,7 @@ static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
         UINT32 frames, BYTE **data)
 {
     ACImpl *This = impl_from_IAudioRenderClient(iface);
-    struct alsa_stream *stream = This->stream;
-    UINT32 write_pos;
-    SIZE_T size;
+    struct get_render_buffer_params params;

TRACE("(%p)->(%u, %p)\n", This, frames, data);

@@ -1307,53 +1305,13 @@ static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
         return E_POINTER;
     *data = NULL;

-    alsa_lock(stream);
-
-    if(stream->getbuf_last){
-        alsa_unlock(stream);
-        return AUDCLNT_E_OUT_OF_ORDER;
-    }
-
-    if(!frames){
-        alsa_unlock(stream);
-        return S_OK;
-    }
-
-    /* held_frames == GetCurrentPadding_nolock(); */
-    if(stream->held_frames + frames > stream->bufsize_frames){
-        alsa_unlock(stream);
-        return AUDCLNT_E_BUFFER_TOO_LARGE;
-    }
-
-    write_pos = stream->wri_offs_frames;
-    if(write_pos + frames > stream->bufsize_frames){
-        if(stream->tmp_buffer_frames < frames){
-            if(stream->tmp_buffer){
-                size = 0;
-                NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, &size, MEM_RELEASE);
-                stream->tmp_buffer = NULL;
-            }
-            size = frames * stream->fmt->nBlockAlign;
-            if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, 0, &size,
-                                       MEM_COMMIT, PAGE_READWRITE)){
-                stream->tmp_buffer_frames = 0;
-                alsa_unlock(stream);
-                return E_OUTOFMEMORY;
-            }
-            stream->tmp_buffer_frames = frames;
-        }
-        *data = stream->tmp_buffer;
-        stream->getbuf_last = -frames;
-    }else{
-        *data = stream->local_buffer + write_pos * stream->fmt->nBlockAlign;
-        stream->getbuf_last = frames;
-    }
-
-    silence_buffer(stream, *data, frames);
+    params.stream = This->stream;
+    params.frames = frames;
+    params.data = data;

-    alsa_unlock(stream);
+    ALSA_CALL(get_render_buffer, &params);

-    return S_OK;
+    return params.result;
 }

static void alsa_wrap_buffer(struct alsa_stream *stream, BYTE *buffer, UINT32 written_frames)
diff --git a/dlls/winealsa.drv/unixlib.h b/dlls/winealsa.drv/unixlib.h
index bd3a1a4bc6a..fb137d6b9ff 100644
--- a/dlls/winealsa.drv/unixlib.h
+++ b/dlls/winealsa.drv/unixlib.h
@@ -114,6 +114,14 @@ struct timer_loop_params
     struct alsa_stream *stream;
 };

+struct get_render_buffer_params
+{
+    struct alsa_stream *stream;
+    UINT32 frames;
+    HRESULT result;
+    BYTE **data;
+};
+
 struct is_format_supported_params
 {
     const char *alsa_name;
@@ -169,6 +177,7 @@ enum alsa_funcs
     alsa_stop,
     alsa_reset,
     alsa_timer_loop,
+    alsa_get_render_buffer,
     alsa_is_format_supported,
     alsa_get_mix_format,
     alsa_get_buffer_size,