数据结构设计
29 Nov 2024
Read time: 8 minute(s)
GE 模块数据结构如下：
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enum ge_pd_rulesPorter/Duff alpha 混合规则枚举
/* * enum ge_pd_mode - graphics engine Porter/Duff alpha blending rules * * pixel = (source * fs + destination * fd) * sa = source alpha * da = destination alpha * * @GE_PD_NONE: fs: sa fd: 1.0-sa (defaults) * @GE_PD_CLEAR: fs: 0.0 fd: 0.0 * @GE_PD_SRC: fs: 1.0 fd: 0.0 * @GE_PD_SRC_OVER: fs: 1.0 fd: 1.0-sa * @GE_PD_DST_OVER: fs: 1.0-da fd: 1.0 * @GE_PD_SRC_IN: fs: da fd: 0.0 * @GE_PD_DST_IN: fs: 0.0 fd: sa * @GE_PD_SRC_OUT: fs: 1.0-da fd: 0.0 * @GE_PD_DST_OUT: fs: 0.0 fd: 1.0-sa * @GE_PD_SRC_ATOP: fs: da fd: 1.0-sa * @GE_PD_DST_ATOP: fs: 1.0-da fd: sa * @GE_PD_ADD: fs: 1.0 fd: 1.0 * @GE_PD_XOR: fs: 1.0-da fd: 1.0-sa * @GE_PD_DST: fs: 0.0 fd: 1.0 */ enum ge_pd_rules { GE_PD_NONE = 0, GE_PD_CLEAR = 1, GE_PD_SRC = 2, GE_PD_SRC_OVER = 3, GE_PD_DST_OVER = 4, GE_PD_SRC_IN = 5, GE_PD_DST_IN = 6, GE_PD_SRC_OUT = 7, GE_PD_DST_OUT = 8, GE_PD_SRC_ATOP = 9, GE_PD_DST_ATOP = 10, GE_PD_ADD = 11, GE_PD_XOR = 12, GE_PD_DST = 13, }; -
struct ge_ctrlGE 控制结构体
/** * struct ge_ctrl - ge ctrl functions * @alpha_en * 0: enable Porter/Duff alpha blending * 1: disable Porter/Duff alpha blending * @alpha_rules: Porter/Duff alpha blending rules * @src_alpha_mode: source alpha mode * 0: pixel alpha mode(src_alpha = src_pixel_alpha) * 1: global alpha mode(src_alpha = src_global_alpha) * 2: mixded alpha mode(src_alpha = src_pixel_alpha * src_global_alpha / 255) * @src_global_alpha: source global alpha value (0~255) * used by global alpha mode and mixded alpha mode * @dst_alpha_mode: destination alpha mode * 0: pixel alpha mode(dst_alpha = dst_pixel_alpha) * 1: global alpha mode(dst_alpha = dst_global_alpha) * 2: mixded alpha mode(dst_alpha = dst_pixel_alpha * dst_global_alpha / 255) * @dst_global_alpha: destination global alpha value (0~255) * used by global alpha mode and mixed alpha mode * @ck_en * 0: disable color key * 1: enable color key * @ck_value: rgb value of color key to match the source pixels * bit[31:24]: reserved * bit[23:16]: R value * bit[15:8]: G value * bit[7:0]: B value * @dither_en(Not supported by IOC_GE_ROTATE) * 0: disable dither * 1: enable dither * @flags: the flags of some functions, such as scan order, src H/V flip * and src 90/180/270 degree rotation, the H flip, V flip * and rotation can be enabled at the same time, the effect * of flip is in front of rotation, only supported by IOC_GE_BITBLT * the flags was defined in mpp_types.h */ struct ge_ctrl { unsigned int alpha_en; enum ge_pd_rules alpha_rules; unsigned int src_alpha_mode; unsigned int src_global_alpha; unsigned int dst_alpha_mode; unsigned int dst_global_alpha; unsigned int ck_en; unsigned int ck_value; unsigned int dither_en; unsigned int flags; }; -
enum ge_fillrect_type颜色填充类型枚举
/* * enum ge_fillrect_type - the ge fill rectangle types: * * GE_NO_GRADIENT: No gradient is used, only use start_color to * fill rectangle, ignore end_color * GE_H_LINEAR_GRADIENT: Interpolates colors between start_color * and end_color in the horizontal direction * form left to right * GE_V_LINEAR_GRADIENT: Interpolates colors between start_color and * end_color in the vertical direction from top to * buttom */ enum ge_fillrect_type { GE_NO_GRADIENT = 0, GE_H_LINEAR_GRADIENT = 1, GE_V_LINEAR_GRADIENT = 2, }; -
struct ge_fillrect矩形填充结构体
/** * struct ge_fillrect - ge fill rectangle * @type: fill rect type * @start_color: start color(32 bits) * bit[31:24] alpha value * bit[23:16] r value * bit[15:8] g value * bit[7:0] b value * @end_color: end color(32 bits) * bit[31:24] alpha value * bit[23:16] r value * bit[15:8] g value * bit[7:0] b value * @dst_buf: the destination buffer * @ctrl: ge ctrl functions */ struct ge_fillrect { enum ge_fillrect_type type; unsigned int start_color; unsigned int end_color; struct mpp_buf dst_buf; struct ge_ctrl ctrl; }; -
struct ge_bitblt位块搬移结构体
/** * struct ge_bitblt - ge bitblt * @src_buf: the source buffer * @dst_buf: the destination buffer * @ctrl: ge ctrl functions */ struct ge_bitblt { struct mpp_buf src_buf; struct mpp_buf dst_buf; struct ge_ctrl ctrl; }; -
struct ge_bitblt位块搬移结构体
/** * struct ge_rotation - ge rotation * @src_buf: the source buffer * @dst_buf: the destination buffer * @src_rot_center: left-top x/y coordinate of src center * @dst_rot_center: left-top x/y coordinate of dst center * @angle_sin: 2.12 fixed point, the sin value of rotation angle * @angle_cos: 2.12 fixed point, the cos value of rotation angle * @ctrl: ge ctrl functions */ struct ge_rotation { struct mpp_buf src_buf; struct mpp_buf dst_buf; struct mpp_point src_rot_center; struct mpp_point dst_rot_center; int angle_sin; int angle_cos; struct ge_ctrl ctrl; }; -
enum ge_mode
GE 模式枚举
enum ge_mode { GE_MODE_NORMAL, GE_MODE_CMDQ, };