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#include <map>
#include "mappedbuffer.h"
using namespace std;
namespace kms {
struct FormatPlaneInfo
{
uint8_t bitspp; /* bits per (macro) pixel */
uint8_t xsub;
uint8_t ysub;
};
struct FormatInfo
{
uint8_t num_planes;
struct FormatPlaneInfo planes[4];
};
static const map<PixelFormat, FormatInfo> format_info_array = {
/* YUV packed */
{ PixelFormat::UYVY, { 1, { { 32, 2, 1 } }, } },
{ PixelFormat::YUYV, { 1, { { 32, 2, 1 } }, } },
{ PixelFormat::YVYU, { 1, { { 32, 2, 1 } }, } },
{ PixelFormat::VYUY, { 1, { { 32, 2, 1 } }, } },
/* YUV semi-planar */
{ PixelFormat::NV12, { 2, { { 8, 1, 1, }, { 16, 2, 2 } }, } },
{ PixelFormat::NV21, { 2, { { 8, 1, 1, }, { 16, 2, 2 } }, } },
/* RGB16 */
{ PixelFormat::RGB565, { 1, { { 16, 1, 1 } }, } },
/* RGB32 */
{ PixelFormat::XRGB8888, { 1, { { 32, 1, 1 } }, } },
{ PixelFormat::XBGR8888, { 1, { { 32, 1, 1 } }, } },
{ PixelFormat::ARGB8888, { 1, { { 32, 1, 1 } }, } },
{ PixelFormat::ABGR8888, { 1, { { 32, 1, 1 } }, } },
};
MappedCPUBuffer::MappedCPUBuffer(uint32_t width, uint32_t height, PixelFormat format)
: m_width(width), m_height(height), m_format(format)
{
const FormatInfo& format_info = format_info_array.at(m_format);
m_num_planes = format_info.num_planes;
for (unsigned i = 0; i < format_info.num_planes; ++i) {
const FormatPlaneInfo& pi = format_info.planes[i];
FramebufferPlane& plane = m_planes[i];
plane.stride = width * pi.bitspp / 8 / pi.xsub;
plane.size = plane.stride * height/ pi.ysub;
plane.offset = 0;
plane.map = new uint8_t[plane.size];
}
}
MappedCPUBuffer::~MappedCPUBuffer()
{
for (unsigned i = 0; i < m_num_planes; ++i) {
FramebufferPlane& plane = m_planes[i];
delete plane.map;
}
}
}
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