diff options
Diffstat (limited to 'libkms++/dumbframebuffer.cpp')
-rw-r--r-- | libkms++/dumbframebuffer.cpp | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/libkms++/dumbframebuffer.cpp b/libkms++/dumbframebuffer.cpp deleted file mode 100644 index fcd01d0..0000000 --- a/libkms++/dumbframebuffer.cpp +++ /dev/null @@ -1,137 +0,0 @@ - -#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++.h" - -#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) - -using namespace std; - -namespace kms -{ - -DumbFramebuffer::DumbFramebuffer(Card &card, uint32_t width, uint32_t height, const string& fourcc) - :DumbFramebuffer(card, width, height, FourCCToPixelFormat(fourcc)) -{ -} - -DumbFramebuffer::DumbFramebuffer(Card& card, uint32_t width, uint32_t height, PixelFormat format) - :Framebuffer(card, width, height), m_format(format) -{ - Create(); -} - -DumbFramebuffer::~DumbFramebuffer() -{ - Destroy(); -} - -void DumbFramebuffer::Create() -{ - int r; - - 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]; - - /* create dumb buffer */ - struct drm_mode_create_dumb creq = drm_mode_create_dumb(); - creq.width = width(); - creq.height = height() / pi.ysub; - creq.bpp = pi.bitspp; - r = drmIoctl(card().fd(), DRM_IOCTL_MODE_CREATE_DUMB, &creq); - if (r) - throw invalid_argument(string("DRM_IOCTL_MODE_CREATE_DUMB failed") + strerror(errno)); - - plane.handle = creq.handle; - plane.stride = creq.pitch; - plane.size = creq.height * creq.pitch; - 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; - 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 DumbFramebuffer::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); - - /* delete dumb buffer */ - struct drm_mode_destroy_dumb dreq = drm_mode_destroy_dumb(); - dreq.handle = plane.handle; - drmIoctl(card().fd(), DRM_IOCTL_MODE_DESTROY_DUMB, &dreq); - if (plane.prime_fd >= 0) - ::close(plane.prime_fd); - } -} - -uint8_t* DumbFramebuffer::map(unsigned plane) -{ - FramebufferPlane& p = m_planes[plane]; - - if (p.map) - return p.map; - - /* prepare buffer for memory mapping */ - struct drm_mode_map_dumb mreq = drm_mode_map_dumb(); - mreq.handle = p.handle; - int r = drmIoctl(card().fd(), DRM_IOCTL_MODE_MAP_DUMB, &mreq); - if (r) - throw invalid_argument(string("DRM_IOCTL_MODE_MAP_DUMB failed") + strerror(errno)); - - /* perform actual memory mapping */ - p.map = (uint8_t *)mmap(0, p.size, PROT_READ | PROT_WRITE, MAP_SHARED, - card().fd(), mreq.offset); - if (p.map == MAP_FAILED) - throw invalid_argument(string("mmap failed: ") + strerror(errno)); - - return p.map; -} - -int DumbFramebuffer::prime_fd(unsigned int plane) -{ - if (m_planes[plane].prime_fd >= 0) - return m_planes[plane].prime_fd; - - int r = drmPrimeHandleToFD(card().fd(), m_planes[plane].handle, - DRM_CLOEXEC, &m_planes[plane].prime_fd); - if (r) - throw std::runtime_error("drmPrimeHandleToFD failed"); - - return m_planes[plane].prime_fd; -} - -} |