native_buffer.h
概述
定义获取和使用NativeBuffer的相关函数。
库： libnative_buffer.so
系统能力： SystemCapability.Graphic.Graphic2D.NativeBuffer
起始版本： 9
相关模块：OH_NativeBuffer
汇总
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
| 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。 |
| OH_NativeBuffer_ColorSpace { OH_COLORSPACE_NONE, OH_COLORSPACE_BT601_EBU_FULL, OH_COLORSPACE_BT601_SMPTE_C_FULL, OH_COLORSPACE_BT709_FULL, OH_COLORSPACE_BT2020_HLG_FULL, OH_COLORSPACE_BT2020_PQ_FULL, OH_COLORSPACE_BT601_EBU_LIMIT, OH_COLORSPACE_BT601_SMPTE_C_LIMIT, OH_COLORSPACE_BT709_LIMIT, OH_COLORSPACE_BT2020_HLG_LIMIT, OH_COLORSPACE_BT2020_PQ_LIMIT, OH_COLORSPACE_SRGB_FULL, OH_COLORSPACE_P3_FULL, OH_COLORSPACE_P3_HLG_FULL, OH_COLORSPACE_P3_PQ_FULL, OH_COLORSPACE_ADOBERGB_FULL, OH_COLORSPACE_SRGB_LIMIT, OH_COLORSPACE_P3_LIMIT, OH_COLORSPACE_P3_HLG_LIMIT, OH_COLORSPACE_P3_PQ_LIMIT, OH_COLORSPACE_ADOBERGB_LIMIT, OH_COLORSPACE_LINEAR_SRGB, OH_COLORSPACE_LINEAR_BT709, OH_COLORSPACE_LINEAR_P3, OH_COLORSPACE_LINEAR_BT2020, OH_COLORSPACE_DISPLAY_SRGB, OH_COLORSPACE_DISPLAY_P3_SRGB, OH_COLORSPACE_DISPLAY_P3_HLG, OH_COLORSPACE_DISPLAY_P3_PQ, OH_COLORSPACE_DISPLAY_BT2020_SRGB, OH_COLORSPACE_DISPLAY_BT2020_HLG, OH_COLORSPACE_DISPLAY_BT2020_PQ } |
OH_NativeBuffer的颜色空间。 |
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。 |
| OH_NativeBuffer_SetColorSpace (OH_NativeBuffer *buffer, OH_NativeBuffer_ColorSpace colorSpace) | 为OH_NativeBuffer设置颜色空间属性。 |