[PATCH 6/9] winedmo: Allocate a client-side stream context with the demuxers.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/winedmo/main.c         | 18 +++++++++++++++++
 dlls/winedmo/unix_demuxer.c |  5 +++--
 dlls/winedmo/unixlib.c      | 40 +++++++++++++++++++++++++++++++++++--
 dlls/winedmo/unixlib.h      |  7 +++++++
 4 files changed, 66 insertions(+), 4 deletions(-)

diff --git a/dlls/winedmo/main.c b/dlls/winedmo/main.c
index 9fc572082cd..0c3187697bb 100644
--- a/dlls/winedmo/main.c
+++ b/dlls/winedmo/main.c
@@ -23,6 +23,21 @@
 WINE_DEFAULT_DEBUG_CHANNEL(dmo);

+static struct stream_context *stream_context_create(void)
+{
+    struct stream_context *context;
+
+    if (!(context = malloc( sizeof(*context) ))) return NULL;
+
+    return context;
+}
+
+static void stream_context_destroy( struct stream_context *context )
+{
+    free( context );
+}
+
+
 static NTSTATUS WINAPI seek_callback( void *args, ULONG size )
 {
     struct seek_callback_params *params = args;
@@ -81,9 +96,11 @@ NTSTATUS CDECL winedmo_demuxer_create( struct winedmo_demuxer *demuxer )

TRACE( "demuxer %p\n", demuxer );

+    if (!(params.context = stream_context_create())) return STATUS_NO_MEMORY;
     if ((status = UNIX_CALL( demuxer_create, &params )))
     {
         WARN( "demuxer_create failed, status %#lx\n", status );
+        stream_context_destroy( params.context );
         return status;
     }

@@ -104,6 +121,7 @@ NTSTATUS CDECL winedmo_demuxer_destroy( struct winedmo_demuxer *demuxer )
     demuxer->handle = 0;
     status = UNIX_CALL( demuxer_destroy, &params );
     if (status) WARN( "demuxer_destroy failed, status %#lx\n", status );
+    else stream_context_destroy( params.context );

return status;
 }
diff --git a/dlls/winedmo/unix_demuxer.c b/dlls/winedmo/unix_demuxer.c
index d337cd6e380..9ebcb9b5b46 100644
--- a/dlls/winedmo/unix_demuxer.c
+++ b/dlls/winedmo/unix_demuxer.c
@@ -60,10 +60,10 @@ NTSTATUS demuxer_create( void *arg )
     AVFormatContext *ctx;
     int ret;

-    TRACE( "params %p\n", params );
+    TRACE( "context %p\n", params->context );

if (!(ctx = avformat_alloc_context())) return STATUS_NO_MEMORY;
-    if (!(ctx->pb = avio_alloc_context( NULL, 0, 0, NULL, unix_read_callback, NULL, unix_seek_callback )))
+    if (!(ctx->pb = avio_alloc_context( NULL, 0, 0, params->context, unix_read_callback, NULL, unix_seek_callback )))
     {
         avformat_free_context( ctx );
         return STATUS_NO_MEMORY;
@@ -88,6 +88,7 @@ NTSTATUS demuxer_destroy( void *arg )

TRACE( "context %p\n", ctx );

+    params->context = ctx->pb->opaque;
     avio_context_free( &ctx->pb );
     avformat_free_context( ctx );

diff --git a/dlls/winedmo/unixlib.c b/dlls/winedmo/unixlib.c
index 0ab05bd7bc2..d79b6e45591 100644
--- a/dlls/winedmo/unixlib.c
+++ b/dlls/winedmo/unixlib.c
@@ -120,14 +120,50 @@ C_ASSERT(ARRAY_SIZE(__wine_unix_call_funcs) == unix_funcs_count);

#ifdef _WIN64

+typedef ULONG PTR32;
+
+static NTSTATUS wow64_demuxer_create( void *arg )
+{
+    struct
+    {
+        PTR32 context;
+        struct winedmo_demuxer demuxer;
+    } *params32 = arg;
+    struct demuxer_create_params params;
+    NTSTATUS status;
+
+    params.context = UintToPtr( params32->context );
+    if ((status = demuxer_create( &params ))) return status;
+    params32->demuxer = params.demuxer;
+
+    return status;
+}
+
+static NTSTATUS wow64_demuxer_destroy( void *arg )
+{
+    struct
+    {
+        struct winedmo_demuxer demuxer;
+        PTR32 context;
+    } *params32 = arg;
+    struct demuxer_create_params params;
+    NTSTATUS status;
+
+    params.demuxer = params32->demuxer;
+    if ((status = demuxer_destroy( &params ))) return status;
+    params32->context = PtrToUint( params.context );
+
+    return status;
+}
+
 const unixlib_entry_t __wine_unix_call_wow64_funcs[] =
 {
 #define X64( name ) [unix_##name] = wow64_##name
     X( process_attach ),

X( demuxer_check ),
-    X( demuxer_create ),
-    X( demuxer_destroy ),
+    X64( demuxer_create ),
+    X64( demuxer_destroy ),
 };

C_ASSERT(ARRAY_SIZE(__wine_unix_call_wow64_funcs) == unix_funcs_count);
diff --git a/dlls/winedmo/unixlib.h b/dlls/winedmo/unixlib.h
index 4b0f533cbb4..891d401aeb5 100644
--- a/dlls/winedmo/unixlib.h
+++ b/dlls/winedmo/unixlib.h
@@ -37,6 +37,11 @@ struct process_attach_params
     UINT64 read_callback;
 };

+struct stream_context
+{
+    UINT64 placeholder;
+};
+
 struct seek_callback_params
 {
     struct dispatch_callback_params dispatch;
@@ -59,12 +64,14 @@ struct demuxer_check_params

struct demuxer_create_params
 {
+    struct stream_context *context;
     struct winedmo_demuxer demuxer;
 };

struct demuxer_destroy_params
 {
     struct winedmo_demuxer demuxer;
+    struct stream_context *context;
 };