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#include <cstring>
#include <stdexcept>
#include <sys/mman.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <fcntl.h>
#include <unistd.h>
#include <drm_fourcc.h>
#include <drm.h>
#include <drm_mode.h>
#include <kms++/kms++.h>
#include <kms++/omap/omapkms++.h>
extern "C" {
#include <omap_drmif.h>
}
using namespace std;
namespace kms
{
OmapFramebuffer::OmapFramebuffer(OmapCard& card, uint32_t width, uint32_t height, const string& fourcc)
: OmapFramebuffer(card, width, height, FourCCToPixelFormat(fourcc))
{
}
OmapFramebuffer::OmapFramebuffer(OmapCard& card, uint32_t width, uint32_t height, PixelFormat format)
: MappedFramebuffer(card, width, height), m_omap_card(card), m_format(format)
{
Create();
}
OmapFramebuffer::~OmapFramebuffer()
{
Destroy();
}
void OmapFramebuffer::Create()
{
const PixelFormatInfo& format_info = get_pixel_format_info(m_format);
m_num_planes = format_info.num_planes;
for (int i = 0; i < format_info.num_planes; ++i) {
const PixelFormatPlaneInfo& pi = format_info.planes[i];
FramebufferPlane& plane = m_planes[i];
uint32_t flags = OMAP_BO_SCANOUT | OMAP_BO_WC;
uint32_t size = width() * height() * pi.bitspp / 8;
struct omap_bo* bo = omap_bo_new(m_omap_card.dev(), size, flags);
if (!bo)
throw invalid_argument(string("omap_bo_new failed: ") + strerror(errno));
uint32_t stride = width() * pi.bitspp / 8;
plane.omap_bo = bo;
plane.handle = omap_bo_handle(bo);
plane.stride = stride;
plane.size = omap_bo_size(bo);
plane.offset = 0;
plane.map = 0;
plane.prime_fd = -1;
}
/* create framebuffer object for the dumb-buffer */
uint32_t bo_handles[4] = { m_planes[0].handle, m_planes[1].handle };
uint32_t pitches[4] = { m_planes[0].stride, m_planes[1].stride };
uint32_t offsets[4] = { m_planes[0].offset, m_planes[1].offset };
uint32_t id;
int r = drmModeAddFB2(card().fd(), width(), height(), (uint32_t)format(),
bo_handles, pitches, offsets, &id, 0);
if (r)
throw invalid_argument(string("drmModeAddFB2 failed: ") + strerror(errno));
set_id(id);
}
void OmapFramebuffer::Destroy()
{
drmModeRmFB(card().fd(), id());
for (uint i = 0; i < m_num_planes; ++i) {
FramebufferPlane& plane = m_planes[i];
/* unmap buffer */
if (plane.map)
munmap(plane.map, plane.size);
omap_bo_del(plane.omap_bo);
if (plane.prime_fd >= 0)
::close(plane.prime_fd);
}
}
uint8_t* OmapFramebuffer::map(unsigned plane)
{
FramebufferPlane& p = m_planes[plane];
if (p.map)
return p.map;
p.map = (uint8_t*)omap_bo_map(p.omap_bo);
if (p.map == MAP_FAILED)
throw invalid_argument(string("mmap failed: ") + strerror(errno));
return p.map;
}
int OmapFramebuffer::prime_fd(unsigned int plane)
{
FramebufferPlane& p = m_planes[plane];
if (p.prime_fd >= 0)
return p.prime_fd;
int fd = omap_bo_dmabuf(p.omap_bo);
if (fd < 0)
throw std::runtime_error("omap_bo_dmabuf failed\n");
p.prime_fd = fd;
return fd;
}
}
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