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5875b20445
android_hardware_qcom_display/libgralloc/gralloc_priv.h
Ramakrishna Prasad N 5875b20445 libgralloc: Add API's to synchronize framebuffer update. 
This change introduces API's in gralloc to allow clients
to synchronize with framebuffer posts.

CRs-fixed: 348953

(cherry picked from commit f81de75b1adb78018c0bd54b7f27901ba467defd)

Conflicts:

	libgralloc/framebuffer.cpp
	libqcomui/qcom_ui.h

Change-Id: I98b6a2b3243f520138cb5d1c76493cdfa3af60b6
2012-06-03 02:49:05 -05:00

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/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef GRALLOC_PRIV_H_
#define GRALLOC_PRIV_H_
#include <stdint.h>
#include <limits.h>
#include <sys/cdefs.h>
#include <hardware/gralloc.h>
#include <pthread.h>
#include <errno.h>
#include <unistd.h>
#include <cutils/native_handle.h>
#include <linux/fb.h>
#if defined(__cplusplus) && defined(HDMI_DUAL_DISPLAY)
#include "overlayLib.h"
using namespace overlay;
#endif
enum {
/* gralloc usage bits indicating the type
* of allocation that should be used */
/* ADSP heap is deprecated, use only if using pmem */
GRALLOC_USAGE_PRIVATE_ADSP_HEAP = GRALLOC_USAGE_PRIVATE_0,
/* SF heap is used for application buffers, is not secured */
GRALLOC_USAGE_PRIVATE_UI_CONTIG_HEAP = GRALLOC_USAGE_PRIVATE_1,
/* SMI heap is deprecated, use only if using pmem */
GRALLOC_USAGE_PRIVATE_SMI_HEAP = GRALLOC_USAGE_PRIVATE_2,
/* SYSTEM heap comes from kernel vmalloc,
* can never be uncached, is not secured*/
GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP = GRALLOC_USAGE_PRIVATE_3,
/* IOMMU heap comes from manually allocated pages,
* can be cached/uncached, is not secured */
GRALLOC_USAGE_PRIVATE_IOMMU_HEAP = 0x01000000,
/* MM heap is a carveout heap for video, can be secured*/
GRALLOC_USAGE_PRIVATE_MM_HEAP = 0x02000000,
/* WRITEBACK heap is a carveout heap for writeback, can be secured*/
GRALLOC_USAGE_PRIVATE_WRITEBACK_HEAP = 0x04000000,
/* CAMERA heap is a carveout heap for camera, is not secured*/
GRALLOC_USAGE_PRIVATE_CAMERA_HEAP = 0x08000000,
/* Set this for allocating uncached memory (using O_DSYNC)
* cannot be used with noncontiguous heaps */
GRALLOC_USAGE_PRIVATE_UNCACHED = 0x00100000,
/* This flag needs to be set when using a non-contiguous heap from ION.
* If not set, the system heap is assumed to be coming from ashmem
*/
GRALLOC_USAGE_PRIVATE_ION = 0x00200000,
/* This flag can be set to disable genlock synchronization
* for the gralloc buffer. If this flag is set the caller
* is required to perform explicit synchronization.
* WARNING - flag is outside the standard PRIVATE region
* and may need to be moved if the gralloc API changes
*/
GRALLOC_USAGE_PRIVATE_UNSYNCHRONIZED = 0X00400000,
/* Set this flag when you need to avoid mapping the memory in userspace */
GRALLOC_USAGE_PRIVATE_DO_NOT_MAP = 0X00800000,
/* Buffer content should be displayed on an external display only */
GRALLOC_USAGE_EXTERNAL_ONLY = 0x00010000,
/* Only this buffer content should be displayed on external, even if
* other EXTERNAL_ONLY buffers are available. Used during suspend.
*/
GRALLOC_USAGE_EXTERNAL_BLOCK = 0x00020000,
/* Use this flag to request content protected buffers. Please note
* that this flag is different from the GRALLOC_USAGE_PROTECTED flag
* which can be used for buffers that are not secured for DRM
* but still need to be protected from screen captures
* 0x00040000 is reserved and these values are subject to change.
*/
GRALLOC_USAGE_PRIVATE_CP_BUFFER = 0x00080000,
};
enum {
/* Gralloc perform enums
*/
GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER = 0x080000001,
};
enum {
GPU_COMPOSITION,
C2D_COMPOSITION,
MDP_COMPOSITION,
CPU_COMPOSITION,
};
/* numbers of max buffers for page flipping */
#define NUM_FRAMEBUFFERS_MIN 2
#define NUM_FRAMEBUFFERS_MAX 3
/* number of default bufers for page flipping */
#define NUM_DEF_FRAME_BUFFERS 2
#define NO_SURFACEFLINGER_SWAPINTERVAL
#define INTERLACE_MASK 0x80
#define S3D_FORMAT_MASK 0xFF000
#define COLOR_FORMAT(x) (x & 0xFFF) // Max range for colorFormats is 0 - FFF
#define DEVICE_PMEM "/dev/pmem"
#define DEVICE_PMEM_ADSP "/dev/pmem_adsp"
#define DEVICE_PMEM_SMIPOOL "/dev/pmem_smipool"
/*****************************************************************************/
#ifdef __cplusplus
//XXX: Remove framebuffer specific classes and defines to a different header
template <class T>
struct Node
{
T data;
Node<T> *next;
};
template <class T>
class Queue
{
public:
Queue(): front(NULL), back(NULL), len(0) {dummy = new T;}
~Queue()
{
clear();
delete dummy;
}
void push(const T& item) //add an item to the back of the queue
{
if(len != 0) { //if the queue is not empty
back->next = new Node<T>; //create a new node
back = back->next; //set the new node as the back node
back->data = item;
back->next = NULL;
} else {
back = new Node<T>;
back->data = item;
back->next = NULL;
front = back;
}
len++;
}
void pop() //remove the first item from the queue
{
if (isEmpty())
return; //if the queue is empty, no node to dequeue
T item = front->data;
Node<T> *tmp = front;
front = front->next;
delete tmp;
if(front == NULL) //if the queue is empty, update the back pointer
back = NULL;
len--;
return;
}
T& getHeadValue() const //return the value of the first item in the queue
{ //without modification to the structure
if (isEmpty()) {
LOGE("Error can't get head of empty queue");
return *dummy;
}
return front->data;
}
bool isEmpty() const //returns true if no elements are in the queue
{
return (front == NULL);
}
size_t size() const //returns the amount of elements in the queue
{
return len;
}
private:
Node<T> *front;
Node<T> *back;
size_t len;
void clear()
{
while (!isEmpty())
pop();
}
T *dummy;
};
#endif
enum {
/* OEM specific HAL formats */
HAL_PIXEL_FORMAT_NV12_ENCODEABLE = 0x102,
HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED = 0x108,
HAL_PIXEL_FORMAT_YCbCr_420_SP = 0x109,
HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO = 0x10A,
HAL_PIXEL_FORMAT_YCrCb_422_SP = 0x10B,
HAL_PIXEL_FORMAT_R_8 = 0x10D,
HAL_PIXEL_FORMAT_RG_88 = 0x10E,
HAL_PIXEL_FORMAT_INTERLACE = 0x180,
};
/* possible formats for 3D content*/
enum {
HAL_NO_3D = 0x0000,
HAL_3D_IN_SIDE_BY_SIDE_L_R = 0x10000,
HAL_3D_IN_TOP_BOTTOM = 0x20000,
HAL_3D_IN_INTERLEAVE = 0x40000,
HAL_3D_IN_SIDE_BY_SIDE_R_L = 0x80000,
HAL_3D_OUT_SIDE_BY_SIDE = 0x1000,
HAL_3D_OUT_TOP_BOTTOM = 0x2000,
HAL_3D_OUT_INTERLEAVE = 0x4000,
HAL_3D_OUT_MONOSCOPIC = 0x8000
};
enum {
BUFFER_TYPE_UI = 0,
BUFFER_TYPE_VIDEO
};
#if defined(HDMI_DUAL_DISPLAY)
enum hdmi_mirroring_state {
HDMI_NO_MIRRORING,
HDMI_UI_MIRRORING,
HDMI_ORIGINAL_RESOLUTION_MIRRORING
};
#endif
/*****************************************************************************/
struct private_module_t;
struct private_handle_t;
struct PmemAllocator;
struct qbuf_t {
buffer_handle_t buf;
int idx;
};
enum buf_state {
SUB,
REF,
AVL
};
struct avail_t {
pthread_mutex_t lock;
pthread_cond_t cond;
#ifdef __cplusplus
bool is_avail;
buf_state state;
#endif
};
struct private_module_t {
gralloc_module_t base;
struct private_handle_t* framebuffer;
uint32_t fbFormat;
uint32_t flags;
uint32_t numBuffers;
uint32_t bufferMask;
pthread_mutex_t lock;
buffer_handle_t currentBuffer;
struct fb_var_screeninfo info;
struct fb_fix_screeninfo finfo;
float xdpi;
float ydpi;
float fps;
int swapInterval;
#ifdef __cplusplus
Queue<struct qbuf_t> disp; // non-empty when buffer is ready for display
#endif
int currentIdx;
struct avail_t avail[NUM_FRAMEBUFFERS_MAX];
pthread_mutex_t qlock;
pthread_cond_t qpost;
enum {
// flag to indicate we'll post this buffer
PRIV_USAGE_LOCKED_FOR_POST = 0x80000000,
PRIV_MIN_SWAP_INTERVAL = 0,
PRIV_MAX_SWAP_INTERVAL = 1,
};
#if defined(__cplusplus)
#if defined(HDMI_DUAL_DISPLAY)
Overlay* pobjOverlay;
int orientation;
int videoOverlay; // VIDEO_OVERLAY - 2D or 3D
int secureVideoOverlay; // VideoOverlay is secure
uint32_t currentOffset;
int enableHDMIOutput; // holds the type of external display
bool trueMirrorSupport;
bool exitHDMIUILoop;
float actionsafeWidthRatio;
float actionsafeHeightRatio;
bool hdmiStateChanged;
hdmi_mirroring_state hdmiMirroringState;
pthread_mutex_t overlayLock;
pthread_cond_t overlayPost;
#endif
pthread_mutex_t bufferPostLock;
pthread_cond_t bufferPostCond;
bool bufferPostDone;
#endif
};
/*****************************************************************************/
#ifdef __cplusplus
struct private_handle_t : public native_handle {
#else
struct private_handle_t {
native_handle_t nativeHandle;
#endif
enum {
PRIV_FLAGS_FRAMEBUFFER = 0x00000001,
PRIV_FLAGS_USES_PMEM = 0x00000002,
PRIV_FLAGS_USES_PMEM_ADSP = 0x00000004,
PRIV_FLAGS_USES_ION = 0x00000008,
PRIV_FLAGS_USES_ASHMEM = 0x00000010,
PRIV_FLAGS_NEEDS_FLUSH = 0x00000020,
PRIV_FLAGS_DO_NOT_FLUSH = 0x00000040,
PRIV_FLAGS_SW_LOCK = 0x00000080,
PRIV_FLAGS_NONCONTIGUOUS_MEM = 0x00000100,
PRIV_FLAGS_HWC_LOCK = 0x00000200, // Set by HWC when storing the handle
PRIV_FLAGS_SECURE_BUFFER = 0x00000400,
PRIV_FLAGS_UNSYNCHRONIZED = 0x00000800, // For explicit synchronization
PRIV_FLAGS_NOT_MAPPED = 0x00001000, // Not mapped in userspace
PRIV_FLAGS_EXTERNAL_ONLY = 0x00002000, // Display on external only
PRIV_FLAGS_EXTERNAL_BLOCK = 0x00004000, // Display only this buffer on external
};
// file-descriptors
int fd;
int genlockHandle; // genlock handle to be dup'd by the binder
// ints
int magic;
int flags;
int size;
int offset;
int bufferType;
// FIXME: the attributes below should be out-of-line
int base;
int gpuaddr; // The gpu address mapped into the mmu. If using ashmem, set to 0 They don't care
int pid;
int format;
int width;
int height;
int genlockPrivFd; // local fd of the genlock device.
#ifdef __cplusplus
static const int sNumInts = 12;
static const int sNumFds = 2;
static const int sMagic = 'gmsm';
private_handle_t(int fd, int size, int flags, int bufferType, int format, int width, int height) :
fd(fd), genlockHandle(-1), magic(sMagic), flags(flags), size(size), offset(0),
bufferType(bufferType), base(0), gpuaddr(0), pid(getpid()), format(format),
width(width), height(height), genlockPrivFd(-1)
{
version = sizeof(native_handle);
numInts = sNumInts;
numFds = sNumFds;
}
~private_handle_t() {
magic = 0;
}
bool usesPhysicallyContiguousMemory() {
return (flags & PRIV_FLAGS_USES_PMEM) != 0;
}
static int validate(const native_handle* h) {
const private_handle_t* hnd = (const private_handle_t*)h;
if (!h || h->version != sizeof(native_handle) ||
h->numInts != sNumInts || h->numFds != sNumFds ||
hnd->magic != sMagic)
{
LOGE("Invalid gralloc handle (at %p): "
"ver(%d/%d) ints(%d/%d) fds(%d/%d) magic(%c%c%c%c/%c%c%c%c)",
h,
h ? h->version : -1, sizeof(native_handle),
h ? h->numInts : -1, sNumInts,
h ? h->numFds : -1, sNumFds,
hnd ? (((hnd->magic >> 24) & 0xFF)?
((hnd->magic >> 24) & 0xFF) : '-') : '?',
hnd ? (((hnd->magic >> 16) & 0xFF)?
((hnd->magic >> 16) & 0xFF) : '-') : '?',
hnd ? (((hnd->magic >> 8) & 0xFF)?
((hnd->magic >> 8) & 0xFF) : '-') : '?',
hnd ? (((hnd->magic >> 0) & 0xFF)?
((hnd->magic >> 0) & 0xFF) : '-') : '?',
(sMagic >> 24) & 0xFF,
(sMagic >> 16) & 0xFF,
(sMagic >> 8) & 0xFF,
(sMagic >> 0) & 0xFF);
return -EINVAL;
}
return 0;
}
static private_handle_t* dynamicCast(const native_handle* in) {
if (validate(in) == 0) {
return (private_handle_t*) in;
}
return NULL;
}
#endif
};
#endif /* GRALLOC_PRIV_H_ */
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