144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_BLIT_HARDWARE_H
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#define ANDROID_BLIT_HARDWARE_H
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#include <stdint.h>
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#include <sys/types.h>
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#if __cplusplus
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extern "C" {
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#endif
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/******************************************************************************/
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/* supported pixel-formats. these must be compatible with
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* graphics/PixelFormat.java, ui/PixelFormat.h, pixelflinger/format.h
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*/
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enum
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{
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COPYBIT_RGBA_8888 = 1,
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COPYBIT_RGB_565 = 4,
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COPYBIT_RGBA_5551 = 6,
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COPYBIT_RGBA_4444 = 7,
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COPYBIT_YCbCr_422_SP = 0x10,
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COPYBIT_YCbCr_420_SP = 0x11
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};
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/* name for copybit_set_parameter */
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enum
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{
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/* rotation of the source image in degrees (0 to 359) */
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COPYBIT_ROTATION_DEG = 1,
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/* plane alpha value */
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COPYBIT_PLANE_ALPHA = 2,
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/* enable or disable dithering */
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COPYBIT_DITHER = 3,
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/* transformation applied (this is a superset of COPYBIT_ROTATION_DEG) */
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COPYBIT_TRANSFORM = 4,
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};
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/* values for copybit_set_parameter(COPYBIT_TRANSFORM) */
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enum {
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/* flip source image horizontally */
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COPYBIT_TRANSFORM_FLIP_H = 0x01,
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/* flip source image vertically */
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COPYBIT_TRANSFORM_FLIP_V = 0x02,
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/* rotate source image 90 degres */
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COPYBIT_TRANSFORM_ROT_90 = 0x04,
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/* rotate source image 180 degres */
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COPYBIT_TRANSFORM_ROT_180 = 0x03,
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/* rotate source image 270 degres */
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COPYBIT_TRANSFORM_ROT_270 = 0x07,
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};
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/* enable/disable value copybit_set_parameter */
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enum {
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COPYBIT_DISABLE = 0,
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COPYBIT_ENABLE = 1
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};
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/* use get() to query static informations about the hardware */
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enum {
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/* Maximum amount of minification supported by the hardware*/
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COPYBIT_MINIFICATION_LIMIT = 1,
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/* Maximum amount of magnification supported by the hardware */
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COPYBIT_MAGNIFICATION_LIMIT = 2,
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/* Number of fractional bits support by the scaling engine */
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COPYBIT_SCALING_FRAC_BITS = 3,
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/* Supported rotation step in degres. */
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COPYBIT_ROTATION_STEP_DEG = 4,
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};
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struct copybit_image_t {
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uint32_t w;
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uint32_t h;
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int32_t format;
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uint32_t offset;
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void* base;
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int fd;
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};
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struct copybit_rect_t {
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int l;
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int t;
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int r;
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int b;
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};
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struct copybit_region_t {
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int (*next)(copybit_region_t const*, copybit_rect_t* rect);
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};
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struct copybit_t
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{
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int (*set_parameter)(struct copybit_t* handle, int name, int value);
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int (*get)(struct copybit_t* handle, int name);
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int (*blit)(
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struct copybit_t* handle,
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struct copybit_image_t const* dst,
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struct copybit_image_t const* src,
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struct copybit_region_t const* region);
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int (*stretch)(
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struct copybit_t* handle,
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struct copybit_image_t const* dst,
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struct copybit_image_t const* src,
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struct copybit_rect_t const* dst_rect,
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struct copybit_rect_t const* src_rect,
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struct copybit_region_t const* region);
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};
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/******************************************************************************/
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struct copybit_t* copybit_init();
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int copybit_term(struct copybit_t* handle);
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/******************************************************************************/
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#if __cplusplus
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} // extern "C"
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#endif
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#endif // ANDROID_BLIT_HARDWARE_H
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