Adds a sunxi-cedrus-drv-video libVA backend

This VA backend uses v4l2's Frame API proposal to interface with the "sunxi-cedrus" video driver on Allwinner SoC. Only a few parts of the code are really dependent on sunxi-cedrus and this VA backend could be reused for other v4l drivers using the Frame API.
2016-08-05 12:23:15 +02:00
commit e263c9542c
28 changed files with 2805 additions and 0 deletions
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+/*
+ * Copyright (c) 2016 Florent Revest, <florent.revest@free-electrons.com>
+ *               2007 Intel Corporation. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sunxi_cedrus_drv_video.h"
+#include "image.h"
+#include "surface.h"
+#include "buffer.h"
+
+#include <assert.h>
+
+#include "tiled_yuv.h"
+
+/*
+ * An Image is a standard data structure containing rendered frames in a usable
+ * pixel format. Here we only use NV12 buffers which are converted from sunxi's
+ * proprietary tiled pixel format with tiled_yuv when deriving an Image from a
+ * Surface.
+ */
+
+VAStatus sunxi_cedrus_QueryImageFormats(VADriverContextP ctx,
+		VAImageFormat *format_list, int *num_formats)
+{
+	format_list[0].fourcc = VA_FOURCC_NV12;
+	*num_formats = 1;
+	return VA_STATUS_SUCCESS;
+}
+
+VAStatus sunxi_cedrus_CreateImage(VADriverContextP ctx, VAImageFormat *format,
+		int width, int height, VAImage *image)
+{
+	INIT_DRIVER_DATA
+	int sizeY, sizeUV;
+	object_image_p obj_img;
+
+	image->format = *format;
+	image->buf = VA_INVALID_ID;
+	image->width = width;
+	image->height = height;
+
+	sizeY    = image->width * image->height;
+	sizeUV   = ((image->width+1) * (image->height+1)/2);
+
+	image->num_planes = 2;
+	image->pitches[0] = (image->width+31)&~31;
+	image->pitches[1] = (image->width+31)&~31;
+	image->offsets[0] = 0;
+	image->offsets[1] = sizeY;
+	image->data_size  = sizeY + sizeUV;
+
+	image->image_id = object_heap_allocate(&driver_data->image_heap);
+	if (image->image_id == VA_INVALID_ID)
+		return VA_STATUS_ERROR_ALLOCATION_FAILED;
+	obj_img = IMAGE(image->image_id);
+
+	if (sunxi_cedrus_CreateBuffer(ctx, 0, VAImageBufferType, image->data_size,
+	    1, NULL, &image->buf) != VA_STATUS_SUCCESS)
+		return VA_STATUS_ERROR_ALLOCATION_FAILED;
+	obj_img->buf = image->buf;
+
+	return VA_STATUS_SUCCESS;
+}
+
+VAStatus sunxi_cedrus_DeriveImage(VADriverContextP ctx, VASurfaceID surface,
+		VAImage *image)
+{
+	INIT_DRIVER_DATA
+	object_surface_p obj_surface;
+	VAImageFormat fmt;
+	object_buffer_p obj_buffer;
+	VAStatus ret;
+
+	obj_surface = SURFACE(surface);
+	fmt.fourcc = VA_FOURCC_NV12;
+
+	ret = sunxi_cedrus_CreateImage(ctx, &fmt, obj_surface->width,
+			obj_surface->height, image);
+	if(ret != VA_STATUS_SUCCESS)
+		return ret;
+
+	obj_buffer = BUFFER(image->buf);
+	if (NULL == obj_buffer)
+		return VA_STATUS_ERROR_ALLOCATION_FAILED;
+
+	/* TODO: Use an appropriate DRM plane instead */
+	tiled_to_planar(driver_data->luma_bufs[obj_surface->output_buf_index], obj_buffer->buffer_data, image->pitches[0], image->width, image->height);
+	tiled_to_planar(driver_data->chroma_bufs[obj_surface->output_buf_index], obj_buffer->buffer_data + image->width*image->height, image->pitches[1], image->width, image->height/2);
+
+	return VA_STATUS_SUCCESS;
+}
+
+VAStatus sunxi_cedrus_DestroyImage(VADriverContextP ctx, VAImageID image)
+{
+	INIT_DRIVER_DATA
+	object_image_p obj_img;
+
+	obj_img = IMAGE(image);
+	assert(obj_img);
+
+	sunxi_cedrus_DestroyBuffer(ctx, obj_img->buf);
+	return VA_STATUS_SUCCESS;
+}
+
+VAStatus sunxi_cedrus_SetImagePalette(VADriverContextP ctx, VAImageID image,
+		unsigned char *palette)
+{ return VA_STATUS_SUCCESS; }
+
+VAStatus sunxi_cedrus_GetImage(VADriverContextP ctx, VASurfaceID surface,
+		int x, int y, unsigned int width, unsigned int height,
+		VAImageID image)
+{ return VA_STATUS_SUCCESS; }
+
+VAStatus sunxi_cedrus_PutImage(VADriverContextP ctx, VASurfaceID surface,
+		VAImageID image, int src_x, int src_y, unsigned int src_width,
+		unsigned int src_height, int dest_x, int dest_y,
+		unsigned int dest_width, unsigned int dest_height)
+{ return VA_STATUS_SUCCESS; }