gralloc: provide convenience macros for hals

Specify a set of macros for obtains fields from the native
implementation of a gralloc (native buffer) handle.

It is expected that to support the k3.0/legacy DDK environment
that DOMX could use the following:

    ion_slots = GET_ION_FD_COUNT(pGrallocHandle)
    /* This strategy is invalid for anything over than NV12 */
    assert(HND_FMT(pGrallocHandle) == HAL_PIXEL_FORMAT_TI_NV12);
    if (ion_slots == 0) {
        pBuffer = GET_PVR_FD(pGrallocHandle);
        pAuxBuf1 = -1;
    } else {
        assert(ion_slots > 1);
        pBuffer = GET_ION_FD(pGrallocHandle, 0);
        pAuxBuf1 = GET_ION_FD(pGrallocHandle, 1);
    }

Change-Id: I0f95472f1a7e8a145ddd5bc1f3708d78d679d101
Signed-off-by: Tony Lofthouse <a0741364@ti.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/include/gralloc/ti_handle_wrapper.h b/include/gralloc/ti_handle_wrapper.h
new file mode 100644
index 0000000..9a4189f
--- /dev/null
+++ b/include/gralloc/ti_handle_wrapper.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) Texas Instruments - http://www.ti.com/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _TI_HANDLE_WRAPPER_H_
+#define _TI_HANDLE_WRAPPER_H_
+
+/*
+ * Provide wrapper api for getting fields from gralloc
+ * handles
+ */
+#define OMAP_LEGACY_HANDLE /* For now enable legacy handle by default */
+#ifdef OMAP_LEGACY_HANDLE
+
+#include "hal_public.h"
+typedef IMG_native_handle_t ti_hndl_t;
+
+#define HND_W(h) h->iWidth
+#define HND_H(h) h->iHeight
+#define HND_FMT(h) h->iFormat
+
+/*
+ * Return total number of ion fd entries in the handle.
+ *
+ * Legacy handle does not support ion fds, so will return 0, use this test
+ * to determine whether to get pvr fds instead.
+ */
+#define GET_ION_FD_COUNT(h) 0
+
+/*
+ * Return ion fd at index 'n'.
+ *
+ * Legacy handle does not support ion fds.
+ */
+#define GET_ION_FD(h, n) -1
+
+/*
+ * Return pvr fd
+ */
+#define GET_PVR_FD(h) h->fd[0]
+
+#else
+
+#include "gralloc/gralloc_ti_handle.h"
+#include "gralloc/hal_gpu_public.h"
+
+typedef gralloc_ti_handle ti_hndl_t;
+
+#define HND_W(h) h->width
+#define HND_H(h) h->height
+#define HND_FMT(h) h->format
+
+/*
+ * Return total number of ion fd entries in the handle.
+ */
+#define GET_ION_FD_COUNT(h) ti_gralloc_handle_num_of_planes(h)
+
+/*
+ * Return ion fd at index 'n'.
+ *
+ * When iterating through the fds, an fd with value < 0 indicates the start
+ * of the unused fd entries.
+ */
+#define GET_ION_FD(h, n) h->export_fds[n]
+
+/*
+ * Return pvr fd
+ */
+#define GET_PVR_FD(h) h->gpu_sync_fd
+
+#endif
+
+#endif /* _TI_HANDLE_WRAPPER_H_ */