native_buffer.h
概述
定义获取和使用NativeBuffer的相关函数
起始版本:
9
相关模块:
汇总
结构体
| 结构体名称 | 描述 |
|---|---|
| OH_NativeBuffer_Config | OH_NativeBuffer的属性配置，用于申请新的OH_NativeBuffer实例或查询现有实例的相关属性 |
类型定义
| 类型名称 | 描述 |
|---|---|
| OH_NativeBuffer | 提供OH_NativeBuffer结构体声明 |
枚举
| 名称 | 描述 |
|---|---|
| OH_NativeBuffer_Usage { NATIVEBUFFER_USAGE_CPU_READ = (1ULL << 0), NATIVEBUFFER_USAGE_CPU_WRITE = (1ULL << 1), NATIVEBUFFER_USAGE_MEM_DMA = (1ULL << 3) } | OH_NativeBuffer的用途。 |
| OH_NativeBuffer_Format { NATIVEBUFFER_PIXEL_FMT_RGB_565 = 3, NATIVEBUFFER_PIXEL_FMT_RGBA_5658, NATIVEBUFFER_PIXEL_FMT_RGBX_4444, NATIVEBUFFER_PIXEL_FMT_RGBA_4444, NATIVEBUFFER_PIXEL_FMT_RGB_444, NATIVEBUFFER_PIXEL_FMT_RGBX_5551, NATIVEBUFFER_PIXEL_FMT_RGBA_5551, NATIVEBUFFER_PIXEL_FMT_RGB_555, NATIVEBUFFER_PIXEL_FMT_RGBX_8888, NATIVEBUFFER_PIXEL_FMT_RGBA_8888, NATIVEBUFFER_PIXEL_FMT_RGB_888, NATIVEBUFFER_PIXEL_FMT_BGR_565, NATIVEBUFFER_PIXEL_FMT_BGRX_4444, NATIVEBUFFER_PIXEL_FMT_BGRA_4444, NATIVEBUFFER_PIXEL_FMT_BGRX_5551, NATIVEBUFFER_PIXEL_FMT_BGRA_5551, NATIVEBUFFER_PIXEL_FMT_BGRX_8888, NATIVEBUFFER_PIXEL_FMT_BGRA_8888, NATIVEBUFFER_PIXEL_FMT_BUTT = 0X7FFFFFFF } |
OH_NativeBuffer的格式。 |
函数
| 函数名称 | 描述 |
|---|---|
| OH_NativeBuffer_Alloc (const OH_NativeBuffer_Config *config) | 通过OH_NativeBuffer_Config创建OH_NativeBuffer实例，每次调用都会产生一个新的OH_NativeBuffer实例 |
| OH_NativeBuffer_Reference (OH_NativeBuffer *buffer) | 将OH_NativeBuffer对象的引用计数加1 |
| OH_NativeBuffer_Unreference (OH_NativeBuffer *buffer) | 将OH_NativeBuffer对象的引用计数减1，当引用计数为0的时候，该NativeBuffer对象会被析构掉 |
| OH_NativeBuffer_GetConfig (OH_NativeBuffer *buffer, OH_NativeBuffer_Config *config) | 用于获取OH_NativeBuffer的属性 |
| OH_NativeBuffer_Map (OH_NativeBuffer *buffer, void **virAddr) | 将OH_NativeBuffer对应的ION内存映射到进程空间 |
| OH_NativeBuffer_Unmap (OH_NativeBuffer *buffer) | 将OH_NativeBuffer对应的ION内存从进程空间移除 |
| OH_NativeBuffer_GetSeqNum (OH_NativeBuffer *buffer) | 获取OH_NativeBuffer的序列号 |