328 lines
12 KiB
C
328 lines
12 KiB
C
/*
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* Copyright 2015 Rockchip Electronics Co. LTD
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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 __MPP_BUFFER_H__
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#define __MPP_BUFFER_H__
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#include "rk_type.h"
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#include "mpp_err.h"
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/*
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* MppBuffer module has several functions:
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*
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* 1. buffer get / put / reference management / external commit / get info.
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* this part is the basic user interface for MppBuffer.
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*
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* function:
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*
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* mpp_buffer_get
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* mpp_buffer_put
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* mpp_buffer_inc_ref
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* mpp_buffer_commit
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* mpp_buffer_info_get
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*
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* 2. user buffer working flow control abstraction.
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* buffer should attach to certain group, and buffer mode control the buffer usage flow.
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* this part is also a part of user interface.
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*
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* function:
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*
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* mpp_buffer_group_get
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* mpp_buffer_group_normal_get
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* mpp_buffer_group_limit_get
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* mpp_buffer_group_put
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* mpp_buffer_group_limit_config
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*
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* 3. buffer allocator management
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* this part is for allocator on different os, it does not have user interface
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* it will support normal buffer, Android ion buffer, Linux v4l2 vb2 buffer
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* user can only use MppBufferType to choose.
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*
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*/
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/*
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* mpp buffer group support two work flow mode:
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*
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* normal flow: all buffer are generated by MPP
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* under this mode, buffer pool is maintained internally
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*
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* typical call flow:
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*
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* mpp_buffer_group_get() return A
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* mpp_buffer_get(A) return a ref +1 -> used
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* mpp_buffer_inc_ref(a) ref +1
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* mpp_buffer_put(a) ref -1
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* mpp_buffer_put(a) ref -1 -> unused
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* mpp_buffer_group_put(A)
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*
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* commit flow: all buffer are commited out of MPP
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* under this mode, buffers is commit by external api.
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* normally MPP only use it but not generate it.
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*
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* typical call flow:
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*
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* ==== external allocator ====
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* mpp_buffer_group_get() return A
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* mpp_buffer_commit(A, x)
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* mpp_buffer_commit(A, y)
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*
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* ======= internal user ======
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* mpp_buffer_get(A) return a
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* mpp_buffer_get(A) return b
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* mpp_buffer_put(a)
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* mpp_buffer_put(b)
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*
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* ==== external allocator ====
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* mpp_buffer_group_put(A)
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*
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* NOTE: commit interface required group handle to record group information
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*/
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/*
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* mpp buffer group has two buffer limit mode: normal and limit
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*
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* normal mode: allows any buffer size and always general new buffer is no unused buffer
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* is available.
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* This mode normally use with normal flow and is used for table / stream buffer
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*
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* limit mode : restrict the buffer's size and count in the buffer group. if try to calloc
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* buffer with different size or extra count it will fail.
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* This mode normally use with commit flow and is used for frame buffer
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*/
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/*
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* NOTE: normal mode is recommanded to work with normal flow, working with limit mode is not.
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* limit mode is recommanded to work with commit flow, working with normal mode is not.
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*/
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typedef enum {
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MPP_BUFFER_INTERNAL,
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MPP_BUFFER_EXTERNAL,
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MPP_BUFFER_MODE_BUTT,
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} MppBufferMode;
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/*
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* the mpp buffer has serval types:
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*
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* normal : normal malloc buffer for unit test or hardware simulation
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* ion : use ion device under Android/Linux, MppBuffer will encapsulte ion file handle
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* ext_dma : the DMABUF(DMA buffers) come from the application
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* drm : use the drm device interface for memory management
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*/
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typedef enum {
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MPP_BUFFER_TYPE_NORMAL,
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MPP_BUFFER_TYPE_ION,
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MPP_BUFFER_TYPE_EXT_DMA,
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MPP_BUFFER_TYPE_DRM,
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MPP_BUFFER_TYPE_DMA_HEAP,
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MPP_BUFFER_TYPE_BUTT,
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} MppBufferType;
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#define MPP_BUFFER_TYPE_MASK 0x0000FFFF
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/*
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* MPP_BUFFER_FLAGS cooperate with MppBufferType
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* 16 high bits of MppBufferType are used in flags
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*
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* eg:
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* DRM CMA buffer : MPP_BUFFER_TYPE_DRM | MPP_BUFFER_FLAGS_CONTIG
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* = 0x00010003
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* DRM SECURE buffer: MPP_BUFFER_TYPE_DRM | MPP_BUFFER_FLAGS_SECURE
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* = 0x00080003
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*
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* The dma buffer source can also be set by format: flags | type.
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* dma buffer source flags:
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* MPP_BUFFER_FLAGS_CONTIG means cma
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* MPP_BUFFER_FLAGS_CACHABLE means cachable
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* MPP_BUFFER_FLAGS_DMA32 means dma32
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*
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* flags originate from drm_rockchip_gem_mem_type
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*/
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#define MPP_BUFFER_FLAGS_MASK 0x003f0000 //ROCKCHIP_BO_MASK << 16
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#define MPP_BUFFER_FLAGS_CONTIG 0x00010000 //ROCKCHIP_BO_CONTIG << 16
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#define MPP_BUFFER_FLAGS_CACHABLE 0x00020000 //ROCKCHIP_BO_CACHABLE << 16
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#define MPP_BUFFER_FLAGS_WC 0x00040000 //ROCKCHIP_BO_WC << 16
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#define MPP_BUFFER_FLAGS_SECURE 0x00080000 //ROCKCHIP_BO_SECURE << 16
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#define MPP_BUFFER_FLAGS_ALLOC_KMAP 0x00100000 //ROCKCHIP_BO_ALLOC_KMAP << 16
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#define MPP_BUFFER_FLAGS_DMA32 0x00200000 //ROCKCHIP_BO_DMA32 << 16
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/*
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* MppBufferInfo variable's meaning is different in different MppBufferType
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*
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* Common
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* index - the buffer index used to track buffer in buffer pool
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* size - the buffer size
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*
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* MPP_BUFFER_TYPE_NORMAL
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*
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* ptr - virtual address of normal malloced buffer
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* fd - unused and set to -1, the allocator would return its
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* internal buffer counter number
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*
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* MPP_BUFFER_TYPE_ION
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*
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* ptr - virtual address of ion buffer in user space
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* hnd - ion handle in user space
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* fd - ion buffer file handle for map / unmap
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*
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*/
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typedef struct MppBufferInfo_t {
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MppBufferType type;
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size_t size;
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void *ptr;
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void *hnd;
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int fd;
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int index;
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} MppBufferInfo;
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#define BUFFER_GROUP_SIZE_DEFAULT (SZ_1M*80)
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/*
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* mpp_buffer_import_with_tag(MppBufferGroup group, MppBufferInfo *info, MppBuffer *buffer)
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*
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* 1. group - specified the MppBuffer to be attached to.
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* group can be NULL then this buffer will attached to default legecy group
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* Default to NULL on mpp_buffer_import case
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*
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* 2. info - input information for the output MppBuffer
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* info can NOT be NULL. It must contain at least one of ptr/fd.
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*
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* 3. buffer - generated MppBuffer from MppBufferInfo.
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* buffer can be NULL then the buffer is commit to group with unused status.
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* Otherwise generated buffer will be directly got and ref_count increased.
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* Default to NULL on mpp_buffer_commit case
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*
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* mpp_buffer_commit usage:
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*
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* Add a external buffer info to group. This buffer will be on unused status.
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* Typical usage is on Android. MediaPlayer gralloc Graphic buffer then commit these buffer
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* to decoder's buffer group. Then decoder will recycle these buffer and return buffer reference
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* to MediaPlayer for display.
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*
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* mpp_buffer_import usage:
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*
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* Transfer a external buffer info to MppBuffer but it is not expected to attached to certain
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* buffer group. So the group is set to NULL. Then this buffer can be used for MppFrame/MppPacket.
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* Typical usage is for image processing. Image processing normally will be a oneshot operation
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* It does not need complicated group management. But in other hand mpp still need to know the
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* imported buffer is leak or not and trace its usage inside mpp process. So we attach this kind
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* of buffer to default misc buffer group for management.
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*/
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#define mpp_buffer_commit(group, info) \
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mpp_buffer_import_with_tag(group, info, NULL, MODULE_TAG, __FUNCTION__)
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#define mpp_buffer_import(buffer, info) \
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mpp_buffer_import_with_tag(NULL, info, buffer, MODULE_TAG, __FUNCTION__)
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#define mpp_buffer_get(group, buffer, size) \
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mpp_buffer_get_with_tag(group, buffer, size, MODULE_TAG, __FUNCTION__)
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#define mpp_buffer_put(buffer) \
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mpp_buffer_put_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_inc_ref(buffer) \
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mpp_buffer_inc_ref_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_info_get(buffer, info) \
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mpp_buffer_info_get_with_caller(buffer, info, __FUNCTION__)
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#define mpp_buffer_read(buffer, offset, data, size) \
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mpp_buffer_read_with_caller(buffer, offset, data, size, __FUNCTION__)
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#define mpp_buffer_write(buffer, offset, data, size) \
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mpp_buffer_write_with_caller(buffer, offset, data, size, __FUNCTION__)
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#define mpp_buffer_get_ptr(buffer) \
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mpp_buffer_get_ptr_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_get_fd(buffer) \
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mpp_buffer_get_fd_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_get_size(buffer) \
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mpp_buffer_get_size_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_get_index(buffer) \
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mpp_buffer_get_index_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_set_index(buffer, index) \
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mpp_buffer_set_index_with_caller(buffer, index, __FUNCTION__)
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#define mpp_buffer_get_offset(buffer) \
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mpp_buffer_get_offset_with_caller(buffer, __FUNCTION__)
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#define mpp_buffer_set_offset(buffer, offset) \
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mpp_buffer_set_offset_with_caller(buffer, offset, __FUNCTION__)
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#define mpp_buffer_group_get_internal(group, type, ...) \
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mpp_buffer_group_get(group, type, MPP_BUFFER_INTERNAL, MODULE_TAG, __FUNCTION__)
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#define mpp_buffer_group_get_external(group, type, ...) \
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mpp_buffer_group_get(group, type, MPP_BUFFER_EXTERNAL, MODULE_TAG, __FUNCTION__)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* MppBuffer interface
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* these interface will change value of group and buffer so before calling functions
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* parameter need to be checked.
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*
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* IMPORTANT:
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* mpp_buffer_import_with_tag - compounded interface for commit and import
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*
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*/
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MPP_RET mpp_buffer_import_with_tag(MppBufferGroup group, MppBufferInfo *info, MppBuffer *buffer,
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const char *tag, const char *caller);
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MPP_RET mpp_buffer_get_with_tag(MppBufferGroup group, MppBuffer *buffer, size_t size,
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const char *tag, const char *caller);
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MPP_RET mpp_buffer_put_with_caller(MppBuffer buffer, const char *caller);
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MPP_RET mpp_buffer_inc_ref_with_caller(MppBuffer buffer, const char *caller);
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MPP_RET mpp_buffer_info_get_with_caller(MppBuffer buffer, MppBufferInfo *info, const char *caller);
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MPP_RET mpp_buffer_read_with_caller(MppBuffer buffer, size_t offset, void *data, size_t size, const char *caller);
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MPP_RET mpp_buffer_write_with_caller(MppBuffer buffer, size_t offset, void *data, size_t size, const char *caller);
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void *mpp_buffer_get_ptr_with_caller(MppBuffer buffer, const char *caller);
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int mpp_buffer_get_fd_with_caller(MppBuffer buffer, const char *caller);
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size_t mpp_buffer_get_size_with_caller(MppBuffer buffer, const char *caller);
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int mpp_buffer_get_index_with_caller(MppBuffer buffer, const char *caller);
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MPP_RET mpp_buffer_set_index_with_caller(MppBuffer buffer, int index, const char *caller);
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size_t mpp_buffer_get_offset_with_caller(MppBuffer buffer, const char *caller);
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MPP_RET mpp_buffer_set_offset_with_caller(MppBuffer buffer, size_t offset, const char *caller);
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MPP_RET mpp_buffer_group_get(MppBufferGroup *group, MppBufferType type, MppBufferMode mode,
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const char *tag, const char *caller);
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MPP_RET mpp_buffer_group_put(MppBufferGroup group);
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MPP_RET mpp_buffer_group_clear(MppBufferGroup group);
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RK_S32 mpp_buffer_group_unused(MppBufferGroup group);
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size_t mpp_buffer_group_usage(MppBufferGroup group);
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MppBufferMode mpp_buffer_group_mode(MppBufferGroup group);
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MppBufferType mpp_buffer_group_type(MppBufferGroup group);
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/*
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* size : 0 - no limit, other - max buffer size
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* count : 0 - no limit, other - max buffer count
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*/
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MPP_RET mpp_buffer_group_limit_config(MppBufferGroup group, size_t size, RK_S32 count);
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RK_U32 mpp_buffer_total_now();
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RK_U32 mpp_buffer_total_max();
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#ifdef __cplusplus
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}
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#endif
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#endif /*__MPP_BUFFER_H__*/
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