[PATCH] dmime: Parse TimeSig track data.

[Michael Stefaniuc]

From: Alistair Leslie-Hughes

Signed-off-by: Alistair Leslie-Hughes 
Signed-off-by: Michael Stefaniuc 
---
v2: Pass the buffer/expected size to stream_chunk_get_data()

dlls/dmime/timesigtrack.c | 54 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/dlls/dmime/timesigtrack.c b/dlls/dmime/timesigtrack.c
index 697b3e3593b..a85f134e0f1 100644
--- a/dlls/dmime/timesigtrack.c
+++ b/dlls/dmime/timesigtrack.c
@@ -37,6 +37,11 @@ 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)
 {
@@ -207,10 +212,55 @@ 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};
+    DMUS_IO_TIMESIGNATURE_ITEM item;
+
+    TRACE("Parsing segment form in %p: %s\n", stream, debugstr_chunk(timesig));
+
+    while ((hr = stream_next_chunk(stream, &chunk)) == S_OK) {
+        if (chunk.id != DMUS_FOURCC_TIMESIGNATURE_TRACK)
+            return DMUS_E_UNSUPPORTED_STREAM;
+
+        if (FAILED(hr = stream_chunk_get_data(stream, &chunk, &item, sizeof(item)))) {
+            WARN("Failed to read data of %s\n", debugstr_chunk(&chunk));
+            return hr;
+        }
+
+        TRACE("Found DMUS_IO_TIMESIGNATURE_ITEM\n");
+        TRACE("  - lTime %d\n", item.lTime);
+        TRACE("  - bBeatsPerMeasure %d\n", item.bBeatsPerMeasure);
+        TRACE("  - bBeat %d\n", item.bBeat);
+        TRACE("  - wGridsPerBeat %d\n", item.wGridsPerBeat);
+    }
+
+    return SUCCEEDED(hr) ? S_OK : hr;
+}
+
 static HRESULT WINAPI time_IPersistStream_Load(IPersistStream *iface, IStream *stream)
 {
-	FIXME(": Loading not implemented yet\n");
-	return S_OK;
+    IDirectMusicTimeSigTrack *This = impl_from_IPersistStream(iface);
+    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 = {