/*
* Copyright (c) 2011-2012,2014, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <cutils/log.h>
#include <fcntl.h>
#include <dlfcn.h>
#include "gralloc_priv.h"
#include "alloc_controller.h"
#include "memalloc.h"
#include "ionalloc.h"
#include "gr.h"
#include "comptype.h"
#include "mdp_version.h"
#ifdef VENUS_COLOR_FORMAT
#include <media/msm_media_info.h>
#else
#define VENUS_Y_STRIDE(args...) 0
#define VENUS_Y_SCANLINES(args...) 0
#define VENUS_BUFFER_SIZE(args...) 0
#endif
#define ASTC_BLOCK_SIZE 16
using namespace gralloc;
using namespace qdutils;
ANDROID_SINGLETON_STATIC_INSTANCE(AdrenoMemInfo);
//Common functions
static bool canFallback(int usage, bool triedSystem)
{
// Fallback to system heap when alloc fails unless
// 1. Composition type is MDP
// 2. Alloc from system heap was already tried
// 3. The heap type is requsted explicitly
// 4. The heap type is protected
// 5. The buffer is meant for external display only
if(QCCompositionType::getInstance().getCompositionType() &
COMPOSITION_TYPE_MDP)
return false;
if(triedSystem)
return false;
if(usage & (GRALLOC_HEAP_MASK | GRALLOC_USAGE_PROTECTED))
return false;
if(usage & (GRALLOC_HEAP_MASK | GRALLOC_USAGE_PRIVATE_EXTERNAL_ONLY))
return false;
//Return true by default
return true;
}
static bool useUncached(int usage)
{
if (usage & GRALLOC_USAGE_PRIVATE_UNCACHED)
return true;
if(((usage & GRALLOC_USAGE_SW_WRITE_MASK) == GRALLOC_USAGE_SW_WRITE_RARELY)
||((usage & GRALLOC_USAGE_SW_READ_MASK) == GRALLOC_USAGE_SW_READ_RARELY))
return true;
return false;
}
//-------------- AdrenoMemInfo-----------------------//
AdrenoMemInfo::AdrenoMemInfo()
{
LINK_adreno_compute_aligned_width_and_height = NULL;
LINK_adreno_compute_padding = NULL;
LINK_adreno_isMacroTilingSupportedByGpu = NULL;
LINK_adreno_compute_compressedfmt_aligned_width_and_height = NULL;
libadreno_utils = ::dlopen("libadreno_utils.so", RTLD_NOW);
if (libadreno_utils) {
*(void **)&LINK_adreno_compute_aligned_width_and_height =
::dlsym(libadreno_utils, "compute_aligned_width_and_height");
*(void **)&LINK_adreno_compute_padding =
::dlsym(libadreno_utils, "compute_surface_padding");
*(void **)&LINK_adreno_isMacroTilingSupportedByGpu =
::dlsym(libadreno_utils, "isMacroTilingSupportedByGpu");
*(void **)&LINK_adreno_compute_compressedfmt_aligned_width_and_height =
::dlsym(libadreno_utils,
"compute_compressedfmt_aligned_width_and_height");
}
}
AdrenoMemInfo::~AdrenoMemInfo()
{
if (libadreno_utils) {
::dlclose(libadreno_utils);
}
}
int AdrenoMemInfo::isMacroTilingSupportedByGPU()
{
if ((libadreno_utils)) {
if(LINK_adreno_isMacroTilingSupportedByGpu) {
return LINK_adreno_isMacroTilingSupportedByGpu();
}
}
return 0;
}
void AdrenoMemInfo::getAlignedWidthAndHeight(int width, int height, int format,
int tile_enabled, int& aligned_w, int& aligned_h)
{
aligned_w = width;
aligned_h = height;
// Currently surface padding is only computed for RGB* surfaces.
if (format <= HAL_PIXEL_FORMAT_BGRA_8888) {
aligned_w = ALIGN(width, 32);
aligned_h = ALIGN(height, 32);
// Don't add any additional padding if debug.gralloc.map_fb_memory
// is enabled
char property[PROPERTY_VALUE_MAX];
if((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) &&
(!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
(!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
return;
}
int bpp = 4;
switch(format)
{
case HAL_PIXEL_FORMAT_RGB_888:
bpp = 3;
break;
case HAL_PIXEL_FORMAT_RGB_565:
bpp = 2;
break;
default: break;
}
if (libadreno_utils) {
int raster_mode = 0; // Adreno unknown raster mode.
int padding_threshold = 512; // Threshold for padding surfaces.
// the function below computes aligned width and aligned height
// based on linear or macro tile mode selected.
if(LINK_adreno_compute_aligned_width_and_height) {
LINK_adreno_compute_aligned_width_and_height(width,
height, bpp, tile_enabled,
raster_mode, padding_threshold,
&aligned_w, &aligned_h);
} else if(LINK_adreno_compute_padding) {
int surface_tile_height = 1; // Linear surface
aligned_w = LINK_adreno_compute_padding(width, bpp,
surface_tile_height, raster_mode,
padding_threshold);
ALOGW("%s: Warning!! Old GFX API is used to calculate stride",
__FUNCTION__);
} else {
ALOGW("%s: Warning!! Symbols compute_surface_padding and " \
"compute_aligned_width_and_height not found", __FUNCTION__);
}
}
} else {
switch (format)
{
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
case HAL_PIXEL_FORMAT_RAW16:
aligned_w = ALIGN(width, 32);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
aligned_w = ALIGN(width, 128);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
case HAL_PIXEL_FORMAT_YV12:
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_422_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_I:
case HAL_PIXEL_FORMAT_YCrCb_422_I:
aligned_w = ALIGN(width, 16);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
aligned_w = VENUS_Y_STRIDE(COLOR_FMT_NV12, width);
aligned_h = VENUS_Y_SCANLINES(COLOR_FMT_NV12, height);
break;
case HAL_PIXEL_FORMAT_BLOB:
break;
case HAL_PIXEL_FORMAT_NV21_ZSL:
aligned_w = ALIGN(width, 64);
aligned_h = ALIGN(height, 64);
break;
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_4x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_5x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_5x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_6x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_6x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_8x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_8x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_8x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_12x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_12x12_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
if(LINK_adreno_compute_compressedfmt_aligned_width_and_height) {
int bytesPerPixel = 0;
int raster_mode = 0; //Adreno unknown raster mode.
int padding_threshold = 512; //Threshold for padding
//surfaces.
LINK_adreno_compute_compressedfmt_aligned_width_and_height(
width, height, format, 0,raster_mode, padding_threshold,
&aligned_w, &aligned_h, &bytesPerPixel);
} else {
ALOGW("%s: Warning!! Symbols" \
" compute_compressedfmt_aligned_width_and_height" \
" not found", __FUNCTION__);
}
break;
default: break;
}
}
}
//-------------- IAllocController-----------------------//
IAllocController* IAllocController::sController = NULL;
IAllocController* IAllocController::getInstance(void)
{
if(sController == NULL) {
sController = new IonController();
}
return sController;
}
//-------------- IonController-----------------------//
IonController::IonController()
{
allocateIonMem();
}
void IonController::allocateIonMem()
{
mIonAlloc = new IonAlloc();
}
int IonController::allocate(alloc_data& data, int usage)
{
int ionFlags = 0;
int ret;
data.uncached = useUncached(usage);
data.allocType = 0;
if(usage & GRALLOC_USAGE_PRIVATE_UI_CONTIG_HEAP)
ionFlags |= ION_HEAP(ION_SF_HEAP_ID);
if(usage & GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP)
ionFlags |= ION_HEAP(ION_SYSTEM_HEAP_ID);
if(usage & GRALLOC_USAGE_PRIVATE_IOMMU_HEAP)
ionFlags |= ION_HEAP(ION_IOMMU_HEAP_ID);
if(usage & GRALLOC_USAGE_PROTECTED) {
if (usage & GRALLOC_USAGE_PRIVATE_MM_HEAP) {
ionFlags |= ION_HEAP(ION_CP_MM_HEAP_ID);
ionFlags |= ION_SECURE;
} else {
// for targets/OEMs which do not need HW level protection
// do not set ion secure flag & MM heap. Fallback to IOMMU heap.
ionFlags |= ION_HEAP(ION_IOMMU_HEAP_ID);
}
} else if(usage & GRALLOC_USAGE_PRIVATE_MM_HEAP) {
//MM Heap is exclusively a secure heap.
//If it is used for non secure cases, fallback to IOMMU heap
ALOGW("GRALLOC_USAGE_PRIVATE_MM_HEAP \
cannot be used as an insecure heap!\
trying to use IOMMU instead !!");
ionFlags |= ION_HEAP(ION_IOMMU_HEAP_ID);
}
if(usage & GRALLOC_USAGE_PRIVATE_CAMERA_HEAP)
ionFlags |= ION_HEAP(ION_CAMERA_HEAP_ID);
if(usage & GRALLOC_USAGE_PRIVATE_ADSP_HEAP)
ionFlags |= ION_HEAP(ION_ADSP_HEAP_ID);
if(ionFlags & ION_SECURE)
data.allocType |= private_handle_t::PRIV_FLAGS_SECURE_BUFFER;
// if no flags are set, default to
// SF + IOMMU heaps, so that bypass can work
// we can fall back to system heap if
// we run out.
if(!ionFlags)
ionFlags = ION_HEAP(ION_SF_HEAP_ID) | ION_HEAP(ION_IOMMU_HEAP_ID);
data.flags = ionFlags;
ret = mIonAlloc->alloc_buffer(data);
// Fallback
if(ret < 0 && canFallback(usage,
(ionFlags & ION_SYSTEM_HEAP_ID)))
{
ALOGW("Falling back to system heap");
data.flags = ION_HEAP(ION_SYSTEM_HEAP_ID);
ret = mIonAlloc->alloc_buffer(data);
}
if(ret >= 0 ) {
data.allocType |= private_handle_t::PRIV_FLAGS_USES_ION;
}
return ret;
}
IMemAlloc* IonController::getAllocator(int flags)
{
IMemAlloc* memalloc = NULL;
if (flags & private_handle_t::PRIV_FLAGS_USES_ION) {
memalloc = mIonAlloc;
} else {
ALOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
}
return memalloc;
}
bool isMacroTileEnabled(int format, int usage)
{
bool tileEnabled = false;
// Check whether GPU & MDSS supports MacroTiling feature
if(AdrenoMemInfo::getInstance().isMacroTilingSupportedByGPU() &&
qdutils::MDPVersion::getInstance().supportsMacroTile())
{
// check the format
switch(format)
{
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
case HAL_PIXEL_FORMAT_RGB_565:
{
tileEnabled = true;
// check the usage flags
if (usage & (GRALLOC_USAGE_SW_READ_MASK |
GRALLOC_USAGE_SW_WRITE_MASK)) {
// Application intends to use CPU for rendering
tileEnabled = false;
}
break;
}
default:
break;
}
}
return tileEnabled;
}
// helper function
unsigned int getSize(int format, int width, int height, const int alignedw,
const int alignedh) {
unsigned int size = 0;
switch (format) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
size = alignedw * alignedh * 4;
break;
case HAL_PIXEL_FORMAT_RGB_888:
size = alignedw * alignedh * 3;
break;
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_RAW16:
size = alignedw * alignedh * 2;
break;
// adreno formats
case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO: // NV21
size = ALIGN(alignedw*alignedh, 4096);
size += ALIGN(2 * ALIGN(width/2, 32) * ALIGN(height/2, 32), 4096);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED: // NV12
// The chroma plane is subsampled,
// but the pitch in bytes is unchanged
// The GPU needs 4K alignment, but the video decoder needs 8K
size = ALIGN( alignedw * alignedh, 8192);
size += ALIGN( alignedw * ALIGN(height/2, 32), 8192);
break;
case HAL_PIXEL_FORMAT_YV12:
if ((format == HAL_PIXEL_FORMAT_YV12) && ((width&1) || (height&1))) {
ALOGE("w or h is odd for the YV12 format");
return 0;
}
size = alignedw*alignedh +
(ALIGN(alignedw/2, 16) * (alignedh/2))*2;
size = ALIGN(size, (unsigned int)4096);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
size = ALIGN((alignedw*alignedh) + (alignedw* alignedh)/2 + 1, 4096);
break;
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_422_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_I:
case HAL_PIXEL_FORMAT_YCrCb_422_I:
if(width & 1) {
ALOGE("width is odd for the YUV422_SP format");
return 0;
}
size = ALIGN(alignedw * alignedh * 2, 4096);
break;
case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
size = VENUS_BUFFER_SIZE(COLOR_FMT_NV12, width, height);
break;
case HAL_PIXEL_FORMAT_BLOB:
if(height != 1) {
ALOGE("%s: Buffers with format HAL_PIXEL_FORMAT_BLOB \
must have height==1 ", __FUNCTION__);
return 0;
}
size = width;
break;
case HAL_PIXEL_FORMAT_NV21_ZSL:
size = ALIGN((alignedw*alignedh) + (alignedw* alignedh)/2, 4096);
break;
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_4x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_5x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_5x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_6x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_6x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_8x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_8x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_8x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_10x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_12x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_RGBA_ASTC_12x12_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
case HAL_PIXEL_FORMAT_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
size = alignedw * alignedh * ASTC_BLOCK_SIZE;
break;
default:
ALOGE("unrecognized pixel format: 0x%x", format);
return 0;
}
return size;
}
unsigned int getBufferSizeAndDimensions(int width, int height, int format,
int& alignedw, int &alignedh)
{
unsigned int size;
AdrenoMemInfo::getInstance().getAlignedWidthAndHeight(width,
height,
format,
false,
alignedw,
alignedh);
size = getSize(format, width, height, alignedw, alignedh);
return size;
}
unsigned int getBufferSizeAndDimensions(int width, int height, int format,
int usage, int& alignedw, int &alignedh)
{
unsigned int size;
int tileEnabled = isMacroTileEnabled(format, usage);
AdrenoMemInfo::getInstance().getAlignedWidthAndHeight(width,
height,
format,
tileEnabled,
alignedw,
alignedh);
size = getSize(format, width, height, alignedw, alignedh);
return size;
}
void getBufferAttributes(int width, int height, int format, int usage,
int& alignedw, int &alignedh, int& tileEnabled, unsigned int& size)
{
tileEnabled = isMacroTileEnabled(format, usage);
AdrenoMemInfo::getInstance().getAlignedWidthAndHeight(width,
height,
format,
tileEnabled,
alignedw,
alignedh);
size = getSize(format, width, height, alignedw, alignedh);
}
int getYUVPlaneInfo(private_handle_t* hnd, struct android_ycbcr* ycbcr)
{
int err = 0;
unsigned int ystride, cstride;
memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved));
// Get the chroma offsets from the handle width/height. We take advantage
// of the fact the width _is_ the stride
switch (hnd->format) {
//Semiplanar
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: //Same as YCbCr_420_SP_VENUS
ystride = cstride = hnd->width;
ycbcr->y = (void*)hnd->base;
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height + 1);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 2;
break;
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
case HAL_PIXEL_FORMAT_YCrCb_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
case HAL_PIXEL_FORMAT_NV21_ZSL:
case HAL_PIXEL_FORMAT_RAW16:
ystride = cstride = hnd->width;
ycbcr->y = (void*)hnd->base;
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height + 1);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 2;
break;
//Planar
case HAL_PIXEL_FORMAT_YV12:
ystride = hnd->width;
cstride = ALIGN(hnd->width/2, 16);
ycbcr->y = (void*)hnd->base;
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height +
cstride * hnd->height/2);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 1;
break;
//Unsupported formats
case HAL_PIXEL_FORMAT_YCbCr_422_I:
case HAL_PIXEL_FORMAT_YCrCb_422_I:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
default:
ALOGD("%s: Invalid format passed: 0x%x", __FUNCTION__,
hnd->format);
err = -EINVAL;
}
return err;
}
// Allocate buffer from width, height and format into a
// private_handle_t. It is the responsibility of the caller
// to free the buffer using the free_buffer function
int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage)
{
alloc_data data;
int alignedw, alignedh;
gralloc::IAllocController* sAlloc =
gralloc::IAllocController::getInstance();
data.base = 0;
data.fd = -1;
data.offset = 0;
data.size = getBufferSizeAndDimensions(w, h, format, usage, alignedw,
alignedh);
data.align = getpagesize();
data.uncached = useUncached(usage);
int allocFlags = usage;
int err = sAlloc->allocate(data, allocFlags);
if (0 != err) {
ALOGE("%s: allocate failed", __FUNCTION__);
return -ENOMEM;
}
private_handle_t* hnd = new private_handle_t(data.fd, data.size,
data.allocType, 0, format,
alignedw, alignedh);
hnd->base = (uint64_t) data.base;
hnd->offset = data.offset;
hnd->gpuaddr = 0;
*pHnd = hnd;
return 0;
}
void free_buffer(private_handle_t *hnd)
{
gralloc::IAllocController* sAlloc =
gralloc::IAllocController::getInstance();
if (hnd && hnd->fd > 0) {
IMemAlloc* memalloc = sAlloc->getAllocator(hnd->flags);
memalloc->free_buffer((void*)hnd->base, hnd->size, hnd->offset, hnd->fd);
}
if(hnd)
delete hnd;
}