Merge "when a zero dimension buffer is allocated, turn the allocation into a...

    struct alloc_rec_t {

        uint32_t w;

        uint32_t h;

        uint32_t s;

        PixelFormat format;

        uint32_t usage;

        void* vaddr;

        size_t size;

    };

** limitations under the License.

*/

#define LOG_TAG "GraphicBufferAllocator"

#include <cutils/log.h>

#include <utils/Singleton.h>

    const size_t c = list.size();

    for (size_t i=0 ; i<c ; i++) {

        const alloc_rec_t& rec(list.valueAt(i));

        snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u x %4u | %2d | 0x%08x\n",

        snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u (%4u) x %4u | %2d | 0x%08x\n",

            list.keyAt(i), rec.size/1024.0f, 

            rec.w, rec.h, rec.format, rec.usage);

            rec.w, rec.s, rec.h, rec.format, rec.usage);

        result.append(buffer);

        total += rec.size;

    }

    result.append(buffer);

}

static inline uint32_t clamp(uint32_t c) {

    return c>0 ? c : 1;

}

status_t GraphicBufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format,

        int usage, buffer_handle_t* handle, int32_t* stride)

{

    // make sure to not allocate a 0 x 0 buffer

    w = clamp(w);

    h = clamp(h);

    // make sure to not allocate a N x 0 or 0 x N buffer, since this is

    // allowed from an API stand-point allocate a 1x1 buffer instead.

    if (!w || !h)

        w = h = 1;

    // we have a h/w allocator and h/w buffer is requested

    status_t err; 

        alloc_rec_t rec;

        rec.w = w;

        rec.h = h;

        rec.s = *stride;

        rec.format = format;

        rec.usage = usage;

        rec.vaddr = 0;

        rec.size = h * stride[0] * bytesPerPixel(format);

        list.add(*handle, rec);

    } else {