LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
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qdutils: metadata utility functions

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Add support for copying to/from virtual addresses as well, in
clients which only have the metadata base pointer but not the
native handle

CRs-Fixed: 2033657
Change-Id: I3d4d0e4139207a54c3db2f8585533974e1657a0a
This commit is contained in:
Naseer Ahmed
2017-04-13 22:45:54 -04:00
committed by Gerrit - the friendly Code Review server
parent 14c8e5ba8a
commit 2e6bee1c3a
2 changed files with 84 additions and 11 deletions
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78
libqdutils/qdMetaData.cpp
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@@ -35,6 +35,10 @@
#include <gralloc_priv.h>
#include "qdMetaData.h"
unsigned long getMetaDataSize() {
return static_cast<unsigned long>(ROUND_UP_PAGESIZE(sizeof(MetaData_t)));
}
static int validateAndMap(private_handle_t* handle) {
if (private_handle_t::validate(handle)) {
ALOGE("%s: Private handle is invalid - handle:%p", __func__, handle);
@@ -47,7 +51,7 @@ static int validateAndMap(private_handle_t* handle) {
}
if (!handle->base_metadata) {
unsigned long size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
auto size = getMetaDataSize();
void *base = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED,
handle->fd_metadata, 0);
if (base == reinterpret_cast<void*>(MAP_FAILED)) {
@@ -62,12 +66,18 @@ static int validateAndMap(private_handle_t* handle) {
}
int setMetaData(private_handle_t *handle, DispParamType paramType,
void *param) {
void *param) {
auto err = validateAndMap(handle);
if (err != 0)
return err;
return setMetaDataVa(reinterpret_cast<MetaData_t*>(handle->base_metadata),
paramType, param);
}
MetaData_t *data = reinterpret_cast <MetaData_t *>(handle->base_metadata);
int setMetaDataVa(MetaData_t *data, DispParamType paramType,
void *param) {
if (data == nullptr)
return -EINVAL;
// If parameter is NULL reset the specific MetaData Key
if (!param) {
data->operation &= ~paramType;
@@ -126,8 +136,13 @@ int clearMetaData(private_handle_t *handle, DispParamType paramType) {
auto err = validateAndMap(handle);
if (err != 0)
return err;
return clearMetaDataVa(reinterpret_cast<MetaData_t *>(handle->base_metadata),
paramType);
}
MetaData_t *data = reinterpret_cast <MetaData_t *>(handle->base_metadata);
int clearMetaDataVa(MetaData_t *data, DispParamType paramType) {
if (data == nullptr)
return -EINVAL;
data->operation &= ~paramType;
switch (paramType) {
case SET_S3D_COMP:
@@ -146,9 +161,16 @@ int getMetaData(private_handle_t *handle, DispFetchParamType paramType,
int ret = validateAndMap(handle);
if (ret != 0)
return ret;
MetaData_t *data = reinterpret_cast <MetaData_t *>(handle->base_metadata);
return getMetaDataVa(reinterpret_cast<MetaData_t *>(handle->base_metadata),
paramType, param);
}
int getMetaDataVa(MetaData_t *data, DispFetchParamType paramType,
void *param) {
// Make sure we send 0 only if the operation queried is present
ret = -EINVAL;
int ret = -EINVAL;
if (data == nullptr)
return ret;
switch (paramType) {
case GET_PP_PARAM_INTERLACED:
@@ -241,9 +263,49 @@ int copyMetaData(struct private_handle_t *src, struct private_handle_t *dst) {
if (err != 0)
return err;
unsigned long size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
MetaData_t *src_data = reinterpret_cast <MetaData_t *>(src->base_metadata);
MetaData_t *dst_data = reinterpret_cast <MetaData_t *>(dst->base_metadata);
memcpy(src_data, dst_data, size);
memcpy(src_data, dst_data, getMetaDataSize());
return 0;
}
int copyMetaDataVaToHandle(MetaData_t *src_data, struct private_handle_t *dst) {
int err = -EINVAL;
if (src_data == nullptr)
return err;
err = validateAndMap(dst);
if (err != 0)
return err;
MetaData_t *dst_data = reinterpret_cast <MetaData_t *>(dst->base_metadata);
memcpy(src_data, dst_data, getMetaDataSize());
return 0;
}
int copyMetaDataHandleToVa(struct private_handle_t *src, MetaData_t *dst_data) {
int err = -EINVAL;
if (dst_data == nullptr)
return err;
err = validateAndMap(src);
if (err != 0)
return err;
MetaData_t *src_data = reinterpret_cast <MetaData_t *>(src->base_metadata);
memcpy(src_data, dst_data, getMetaDataSize());
return 0;
}
int copyMetaDataVaToVa(MetaData_t *src_data, MetaData_t *dst_data) {
int err = -EINVAL;
if (src_data == nullptr)
return err;
if (dst_data == nullptr)
return err;
memcpy(src_data, dst_data, getMetaDataSize());
return 0;
}