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Commit 30eb1b18 authored by Mathias Agopian's avatar Mathias Agopian
Browse files

[3171580] Add transform field to native buffers. (DO NOT MERGE) 

This field indicate how the content of the buffer
needs to be transformed.

Change-Id: Ide3e980a90599e931406135693231276626adbbb
parent 733189d4

include/ui/GraphicBuffer.h

+10 −0
Original line number Diff line number Diff line
@@ -26,6 +26,8 @@ 
#include <utils/Flattenable.h>

#include <pixelflinger/pixelflinger.h>



#include <hardware/hardware.h>



struct android_native_buffer_t;



namespace android {
@@ -63,6 +65,13 @@ public: 
        USAGE_HW_MASK           = GRALLOC_USAGE_HW_MASK

    };



    enum {

        TRANSFORM_IDENTITY      = 0,

        TRANSFORM_ROT_90        = HAL_TRANSFORM_ROT_90,

        TRANSFORM_ROT_180       = HAL_TRANSFORM_ROT_180,

        TRANSFORM_ROT_270       = HAL_TRANSFORM_ROT_270

    };



    GraphicBuffer();



    // creates w * h buffer
@@ -79,6 +88,7 @@ public: 
    uint32_t getHeight() const          { return height; }

    uint32_t getStride() const          { return stride; }

    uint32_t getUsage() const           { return usage; }

    uint32_t getTransform() const       { return transform; }

    PixelFormat getPixelFormat() const  { return format; }

    Rect getBounds() const              { return Rect(width, height); }

include/ui/android_native_buffer.h

+6 −2
Original line number Diff line number Diff line
@@ -52,7 +52,11 @@ typedef struct android_native_buffer_t 
    int format;

    int usage;



    void* reserved[2];

    /* transformation as defined in hardware.h */

    uint8_t transform;



    uint8_t reserved_bytes[3];

    void* reserved[1];



    buffer_handle_t handle;

libs/ui/GraphicBuffer.cpp

+13 −6
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ GraphicBuffer::GraphicBuffer() 
    stride = 

    format = 

    usage  = 0;

    transform = 0;

    handle = NULL;

}
@@ -57,7 +58,8 @@ GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h, 
    height = 

    stride = 

    format = 

    usage  = 0;

    usage  =

    transform = 0;

    handle = NULL;

    mInitCheck = initSize(w, h, reqFormat, reqUsage);

}
@@ -74,6 +76,7 @@ GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h, 
    stride = inStride;

    format = inFormat;

    usage  = inUsage;

    transform = 0;

    handle = inHandle;

}
@@ -182,8 +185,10 @@ status_t GraphicBuffer::lock(GGLSurface* sur, uint32_t usage) 
    return res;

}



const int kFlattenFdsOffset = 9;



size_t GraphicBuffer::getFlattenedSize() const {

    return (8 + (handle ? handle->numInts : 0))*sizeof(int);

    return (kFlattenFdsOffset + (handle ? handle->numInts : 0))*sizeof(int);

}



size_t GraphicBuffer::getFdCount() const {
@@ -208,13 +213,14 @@ status_t GraphicBuffer::flatten(void* buffer, size_t size, 
    buf[5] = usage;

    buf[6] = 0;

    buf[7] = 0;

    buf[8] = transform;



    if (handle) {

        buf[6] = handle->numFds;

        buf[7] = handle->numInts;

        native_handle_t const* const h = handle;

        memcpy(fds,     h->data,             h->numFds*sizeof(int));

        memcpy(&buf[8], h->data + h->numFds, h->numInts*sizeof(int));

        memcpy(&buf[kFlattenFdsOffset], h->data + h->numFds, h->numInts*sizeof(int));

    }



    return NO_ERROR;
@@ -223,7 +229,7 @@ status_t GraphicBuffer::flatten(void* buffer, size_t size, 
status_t GraphicBuffer::unflatten(void const* buffer, size_t size,

        int fds[], size_t count)

{

    if (size < 8*sizeof(int)) return NO_MEMORY;

    if (size < kFlattenFdsOffset*sizeof(int)) return NO_MEMORY;



    int const* buf = static_cast<int const*>(buffer);

    if (buf[0] != 'GBFR') return BAD_TYPE;
@@ -231,7 +237,7 @@ status_t GraphicBuffer::unflatten(void const* buffer, size_t size, 
    const size_t numFds  = buf[6];

    const size_t numInts = buf[7];



    const size_t sizeNeeded = (8 + numInts) * sizeof(int);

    const size_t sizeNeeded = (kFlattenFdsOffset + numInts) * sizeof(int);

    if (size < sizeNeeded) return NO_MEMORY;



    size_t fdCountNeeded = 0;
@@ -248,9 +254,10 @@ status_t GraphicBuffer::unflatten(void const* buffer, size_t size, 
        stride = buf[3];

        format = buf[4];

        usage  = buf[5];

        transform = buf[8];

        native_handle* h = native_handle_create(numFds, numInts);

        memcpy(h->data,          fds,     numFds*sizeof(int));

        memcpy(h->data + numFds, &buf[8], numInts*sizeof(int));

        memcpy(h->data + numFds, &buf[kFlattenFdsOffset], numInts*sizeof(int));

        handle = h;

    } else {

        width = height = stride = format = usage = 0;