diff options
Diffstat (limited to 'hwc/hal_public.h')
| -rw-r--r-- | hwc/hal_public.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/hwc/hal_public.h b/hwc/hal_public.h new file mode 100644 index 0000000..a7dfb08 --- /dev/null +++ b/hwc/hal_public.h @@ -0,0 +1,188 @@ +/* Copyright (c) Imagination Technologies Ltd. + * + * The contents of this file are subject to the MIT license as set out below. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef HAL_PUBLIC_H +#define HAL_PUBLIC_H + +/* Authors of third party hardware composer (HWC) modules will need to include + * this header to access functionality in the gralloc and framebuffer HALs. + */ + +#include <hardware/gralloc.h> + +#define ALIGN(x,a) (((x) + (a) - 1L) & ~((a) - 1L)) +#define HW_ALIGN 32 + +/* This can be tuned down as appropriate for the SOC. + * + * IMG formats are usually a single sub-alloc. + * Some OEM video formats are two sub-allocs (Y, UV planes). + * Future OEM video formats might be three sub-allocs (Y, U, V planes). + */ +#define MAX_SUB_ALLOCS 3 + +typedef struct +{ + native_handle_t base; + + /* These fields can be sent cross process. They are also valid + * to duplicate within the same process. + * + * A table is stored within psPrivateData on gralloc_module_t (this + * is obviously per-process) which maps stamps to a mapped + * PVRSRV_CLIENT_MEM_INFO in that process. Each map entry has a lock + * count associated with it, satisfying the requirements of the + * Android API. This also prevents us from leaking maps/allocations. + * + * This table has entries inserted either by alloc() + * (alloc_device_t) or map() (gralloc_module_t). Entries are removed + * by free() (alloc_device_t) and unmap() (gralloc_module_t). + * + * As a special case for framebuffer_device_t, framebuffer_open() + * will add and framebuffer_close() will remove from this table. + */ + +#define IMG_NATIVE_HANDLE_NUMFDS MAX_SUB_ALLOCS + /* The `fd' field is used to "export" a meminfo to another process. + * Therefore, it is allocated by alloc_device_t, and consumed by + * gralloc_module_t. The framebuffer_device_t does not need a handle, + * and the special value IMG_FRAMEBUFFER_FD is used instead. + */ + int fd[MAX_SUB_ALLOCS]; + +#define IMG_NATIVE_HANDLE_NUMINTS ((sizeof(unsigned long long) / sizeof(int)) + 5) + /* A KERNEL unique identifier for any exported kernel meminfo. Each + * exported kernel meminfo will have a unique stamp, but note that in + * userspace, several meminfos across multiple processes could have + * the same stamp. As the native_handle can be dup(2)'d, there could be + * multiple handles with the same stamp but different file descriptors. + */ + unsigned long long ui64Stamp; + + /* This is used for buffer usage validation when locking a buffer, + * and also in WSEGL (for the composition bypass feature). + */ + int usage; + + /* In order to do efficient cache flushes we need the buffer dimensions + * and format. These are available on the ANativeWindowBuffer, + * but the platform doesn't pass them down to the graphics HAL. + * + * These fields are also used in the composition bypass. In this + * capacity, these are the "real" values for the backing allocation. + */ + int iWidth; + int iHeight; + int iFormat; + unsigned int uiBpp; +} +__attribute__((aligned(sizeof(int)),packed)) IMG_native_handle_t; + +typedef struct +{ + framebuffer_device_t base; + + /* The HWC was loaded. post() is no longer responsible for presents */ + int bBypassPost; + + /* HWC path for present posts */ + int (*Post2)(framebuffer_device_t *fb, buffer_handle_t *buffers, + int num_buffers, void *data, int data_length); +} +IMG_framebuffer_device_public_t; + +typedef struct IMG_gralloc_module_public_t +{ + gralloc_module_t base; + + /* If the framebuffer has been opened, this will point to the + * framebuffer device data required by the allocator, WSEGL + * modules and composerhal. + */ + IMG_framebuffer_device_public_t *psFrameBufferDevice; + + int (*GetPhyAddrs)(struct IMG_gralloc_module_public_t const* module, + buffer_handle_t handle, + unsigned int auiPhyAddr[MAX_SUB_ALLOCS]); + + /* Custom-blit components in lieu of overlay hardware */ + int (*Blit)(struct IMG_gralloc_module_public_t const *module, + buffer_handle_t src, + void *dest[MAX_SUB_ALLOCS], int format); + + int (*Blit2)(struct IMG_gralloc_module_public_t const *module, + buffer_handle_t src, buffer_handle_t dest, + int w, int h, int x, int y); +} +IMG_gralloc_module_public_t; + +typedef struct +{ + int l, t, w, h; +} +IMG_write_lock_rect_t; + +typedef struct IMG_buffer_format_public_t +{ + /* Buffer formats are returned as a linked list */ + struct IMG_buffer_format_public_t *psNext; + + /* HAL_PIXEL_FORMAT_... enumerant */ + int iHalPixelFormat; + + /* WSEGL_PIXELFORMAT_... enumerant */ + int iWSEGLPixelFormat; + + /* Friendly name for format */ + const char *const szName; + + /* Bits (not bytes) per pixel */ + unsigned int uiBpp; + + /* GPU output format (creates EGLConfig for format) */ + int bGPURenderable; +} +IMG_buffer_format_public_t; + +/* + * These are vendor specific pixel formats, by (informal) convention IMGTec + * formats start from the top of the range, TI formats start from the bottom + */ +#define HAL_PIXEL_FORMAT_BGRX_8888 0x1FF +#define HAL_PIXEL_FORMAT_TI_NV12 0x100 +#define HAL_PIXEL_FORMAT_TI_UNUSED 0x101 /* Free for use */ +#define HAL_PIXEL_FORMAT_TI_NV12_1D 0x102 + +#ifndef GRALLOC_USAGE_SYSTEM_HEAP +#define GRALLOC_USAGE_SYSTEM_HEAP GRALLOC_USAGE_PRIVATE_0 +#else +#error GRALLOC_USAGE_SYSTEM_HEAP should only be defined by hal_public.h +#endif + +#ifndef GRALLOC_USAGE_PHYS_CONTIG +#define GRALLOC_USAGE_PHYS_CONTIG GRALLOC_USAGE_PRIVATE_1 +#else +#error GRALLOC_USAGE_PHYS_CONTIG should only be defined by hal_public.h +#endif +#endif /* HAL_PUBLIC_H */ + |