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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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 ANDROID_BLIT_HARDWARE_H
#define ANDROID_BLIT_HARDWARE_H
#include <stdint.h>
#include <sys/types.h>
#if __cplusplus
extern "C" {
#endif
/******************************************************************************/
/* supported pixel-formats. these must be compatible with
* graphics/PixelFormat.java, ui/PixelFormat.h, pixelflinger/format.h
*/
enum
{
COPYBIT_RGBA_8888 = 1,
COPYBIT_RGB_565 = 4,
COPYBIT_RGBA_5551 = 6,
COPYBIT_RGBA_4444 = 7,
COPYBIT_YCbCr_422_SP = 0x10,
COPYBIT_YCbCr_420_SP = 0x11
};
/* name for copybit_set_parameter */
enum
{
/* rotation of the source image in degrees (0 to 359) */
COPYBIT_ROTATION_DEG = 1,
/* plane alpha value */
COPYBIT_PLANE_ALPHA = 2,
/* enable or disable dithering */
COPYBIT_DITHER = 3,
/* transformation applied (this is a superset of COPYBIT_ROTATION_DEG) */
COPYBIT_TRANSFORM = 4,
};
/* values for copybit_set_parameter(COPYBIT_TRANSFORM) */
enum {
/* flip source image horizontally */
COPYBIT_TRANSFORM_FLIP_H = 0x01,
/* flip source image vertically */
COPYBIT_TRANSFORM_FLIP_V = 0x02,
/* rotate source image 90 degres */
COPYBIT_TRANSFORM_ROT_90 = 0x04,
/* rotate source image 180 degres */
COPYBIT_TRANSFORM_ROT_180 = 0x03,
/* rotate source image 270 degres */
COPYBIT_TRANSFORM_ROT_270 = 0x07,
};
/* enable/disable value copybit_set_parameter */
enum {
COPYBIT_DISABLE = 0,
COPYBIT_ENABLE = 1
};
/* use get() to query static informations about the hardware */
enum {
/* Maximum amount of minification supported by the hardware*/
COPYBIT_MINIFICATION_LIMIT = 1,
/* Maximum amount of magnification supported by the hardware */
COPYBIT_MAGNIFICATION_LIMIT = 2,
/* Number of fractional bits support by the scaling engine */
COPYBIT_SCALING_FRAC_BITS = 3,
/* Supported rotation step in degres. */
COPYBIT_ROTATION_STEP_DEG = 4,
};
struct copybit_image_t {
uint32_t w;
uint32_t h;
int32_t format;
uint32_t offset;
void* base;
int fd;
};
struct copybit_rect_t {
int l;
int t;
int r;
int b;
};
struct copybit_region_t {
int (*next)(copybit_region_t const*, copybit_rect_t* rect);
};
struct copybit_t
{
int (*set_parameter)(struct copybit_t* handle, int name, int value);
int (*get)(struct copybit_t* handle, int name);
int (*blit)(
struct copybit_t* handle,
struct copybit_image_t const* dst,
struct copybit_image_t const* src,
struct copybit_region_t const* region);
int (*stretch)(
struct copybit_t* handle,
struct copybit_image_t const* dst,
struct copybit_image_t const* src,
struct copybit_rect_t const* dst_rect,
struct copybit_rect_t const* src_rect,
struct copybit_region_t const* region);
};
/******************************************************************************/
struct copybit_t* copybit_init();
int copybit_term(struct copybit_t* handle);
/******************************************************************************/
#if __cplusplus
} // extern "C"
#endif
#endif // ANDROID_BLIT_HARDWARE_H
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