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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>
}
#define __round_mask(x, y) ((__typeof__(x))((y)-1))
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define PAGE_SIZE 4096
using namespace std;
namespace kms
{
OmapFramebuffer::OmapFramebuffer(OmapCard& card, uint32_t width, uint32_t height, const string& fourcc, Flags flags)
: OmapFramebuffer(card, width, height, FourCCToPixelFormat(fourcc), flags)
{
}
OmapFramebuffer::OmapFramebuffer(OmapCard& card, uint32_t width, uint32_t height, PixelFormat format, Flags flags)
:MappedFramebuffer(card, width, height), m_omap_card(card), m_format(format)
{
Create(flags);
}
OmapFramebuffer::~OmapFramebuffer()
{
Destroy();
}
void OmapFramebuffer::Create(Flags buffer_flags)
{
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;
#if defined(OMAP_BO_MEM_CONTIG)
if (buffer_flags & Flags::MemContig)
flags |= OMAP_BO_MEM_CONTIG;
if (buffer_flags & Flags::MemTiler)
flags |= OMAP_BO_MEM_TILER;
if (buffer_flags & Flags::MemPin)
flags |= OMAP_BO_MEM_PIN;
#endif
struct omap_bo* bo;
uint32_t stride;
if (!(buffer_flags & Flags::Tiled)) {
stride = width() * pi.bitspp / 8;
uint32_t size = stride * height() / pi.ysub;
bo = omap_bo_new(m_omap_card.dev(), size, flags);
if (!bo)
throw invalid_argument(string("omap_bo_new failed: ") + strerror(errno));
} else {
unsigned bitspertiler;
switch (m_format) {
case PixelFormat::NV12:
bitspertiler = i == 0 ? 8 : 16; break;
case PixelFormat::YUYV:
case PixelFormat::UYVY:
bitspertiler = 32; break;
case PixelFormat::ARGB8888:
case PixelFormat::XRGB8888:
bitspertiler = 32; break;
case PixelFormat::RGB565:
bitspertiler = 16; break;
default:
throw invalid_argument("unimplemented format");
}
switch (bitspertiler) {
case 8: flags |= OMAP_BO_TILED_8; break;
case 16: flags |= OMAP_BO_TILED_16; break;
case 32: flags |= OMAP_BO_TILED_32; break;
default:
throw invalid_argument("bad bitspertiler");
}
uint32_t width_tiler = width() * pi.bitspp / bitspertiler;
bo = omap_bo_new_tiled(m_omap_card.dev(), width_tiler, height(), flags);
if (!bo)
throw invalid_argument(string("omap_bo_new_tiled failed: ") + strerror(errno));
stride = round_up(width() * pi.bitspp / 8, PAGE_SIZE);
}
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 */
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()
{
/* delete framebuffer */
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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