dmime: Parse TimeSig track data.

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Michael Stefaniuc <mstefani@winehq.org>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/dmime/timesigtrack.c

@@ -19,6 +19,7 @@
 
 #include "dmime_private.h"
 #include "dmobject.h"
+#include "wine/heap.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(dmime);
 
@@ -29,6 +30,9 @@ typedef struct IDirectMusicTimeSigTrack {
     IDirectMusicTrack IDirectMusicTrack_iface;
     struct dmobject dmobj;  /* IPersistStream only */
     LONG ref;
+
+    DMUS_IO_TIMESIGNATURE_ITEM *items;
+    unsigned int count;
 } IDirectMusicTimeSigTrack;
 
 /* IDirectMusicTimeSigTrack IDirectMusicTrack8 part: */
@@ -37,6 +41,11 @@ static inline IDirectMusicTimeSigTrack *impl_from_IDirectMusicTrack(IDirectMusic
     return CONTAINING_RECORD(iface, IDirectMusicTimeSigTrack, IDirectMusicTrack_iface);
 }
 
+static inline IDirectMusicTimeSigTrack *impl_from_IPersistStream(IPersistStream *iface)
+{
+    return CONTAINING_RECORD(iface, IDirectMusicTimeSigTrack, dmobj.IPersistStream_iface);
+}
+
 static HRESULT WINAPI IDirectMusicTrackImpl_QueryInterface(IDirectMusicTrack *iface, REFIID riid,
         void **ret_iface)
 {
@@ -77,6 +86,7 @@ static ULONG WINAPI IDirectMusicTrackImpl_Release(IDirectMusicTrack *iface)
     TRACE("(%p) ref=%d\n", This, ref);
 
     if (!ref) {
+        heap_free(This->items);
         HeapFree(GetProcessHeap(), 0, This);
         DMIME_UnlockModule();
     }
@@ -207,10 +217,60 @@ static const IDirectMusicTrackVtbl dmtack_vtbl = {
     IDirectMusicTrackImpl_Clone
 };
 
+static HRESULT parse_timetrack_list(IDirectMusicTimeSigTrack *This, IStream *stream,
+            struct chunk_entry *timesig)
+{
+    HRESULT hr;
+    struct chunk_entry chunk = {.parent = timesig};
+    int i;
+
+    TRACE("Parsing segment form in %p: %s\n", stream, debugstr_chunk(timesig));
+
+    if (FAILED(hr = stream_next_chunk(stream, &chunk))) {
+        WARN("Failed to read data of %s\n", debugstr_chunk(&chunk));
+        return hr;
+    }
+
+    if (chunk.id != DMUS_FOURCC_TIMESIGNATURE_TRACK)
+        return DMUS_E_UNSUPPORTED_STREAM;
+
+    hr = stream_chunk_get_array(stream, &chunk, (void **)&This->items, &This->count,
+            sizeof(DMUS_IO_TIMESIGNATURE_ITEM));
+    if (FAILED(hr))
+        return hr;
+
+    for (i = 0; i < This->count; i++)
+    {
+        TRACE("Found DMUS_IO_TIMESIGNATURE_ITEM\n");
+        TRACE("  - lTime %d\n", This->items[i].lTime);
+        TRACE("  - bBeatsPerMeasure %d\n", This->items[i].bBeatsPerMeasure);
+        TRACE("  - bBeat %d\n", This->items[i].bBeat);
+        TRACE("  - wGridsPerBeat %d\n", This->items[i].wGridsPerBeat);
+    }
+
+    return S_OK;
+}
+
 static HRESULT WINAPI time_IPersistStream_Load(IPersistStream *iface, IStream *stream)
 {
-	FIXME(": Loading not implemented yet\n");
+    IDirectMusicTimeSigTrack *This = impl_from_IPersistStream(iface);
-	return S_OK;
+    HRESULT hr;
+    struct chunk_entry chunk = {0};
+
+    TRACE("%p, %p\n", This, stream);
+
+    if (!stream)
+        return E_POINTER;
+
+    if ((hr = stream_get_chunk(stream, &chunk) != S_OK))
+        return hr;
+
+    if (chunk.id == FOURCC_LIST && chunk.type == DMUS_FOURCC_TIMESIGTRACK_LIST)
+        hr = parse_timetrack_list(This, stream, &chunk);
+    else
+        hr = DMUS_E_UNSUPPORTED_STREAM;
+
+    return hr;
 }
 
 static const IPersistStreamVtbl persiststream_vtbl = {