diff options
Diffstat (limited to 'kms++/src')
| -rw-r--r-- | kms++/src/extframebuffer.cpp | 58 |
1 files changed, 53 insertions, 5 deletions
diff --git a/kms++/src/extframebuffer.cpp b/kms++/src/extframebuffer.cpp index 1af2f62..2f23a33 100644 --- a/kms++/src/extframebuffer.cpp +++ b/kms++/src/extframebuffer.cpp @@ -14,8 +14,26 @@ namespace kms ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, PixelFormat format, uint32_t handles[], uint32_t pitches[], uint32_t offsets[]) - : Framebuffer(card, width, height) + : MappedFramebuffer(card, width, height) { + m_format = format; + + const PixelFormatInfo& format_info = get_pixel_format_info(format); + + m_num_planes = format_info.num_planes; + + for (int i = 0; i < format_info.num_planes; ++i) { + FramebufferPlane& plane = m_planes[i]; + + plane.handle = handles[i]; + plane.prime_fd = 0; + + plane.stride = pitches[i]; + plane.offset = offsets[i]; + plane.size = plane.stride * height; + plane.map = 0; + } + uint32_t id; int r = drmModeAddFB2(card.fd(), width, height, (uint32_t)format, handles, pitches, offsets, &id, 0); if (r) @@ -26,23 +44,35 @@ ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, Pixe ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, PixelFormat format, int fds[4], uint32_t pitches[4], uint32_t offsets[4]) - : Framebuffer(card, width, height) + : MappedFramebuffer(card, width, height) { int r; + m_format = format; + const PixelFormatInfo& format_info = get_pixel_format_info(format); - uint32_t handles[4] = { 0 }; + m_num_planes = format_info.num_planes; for (int i = 0; i < format_info.num_planes; ++i) { - r = drmPrimeFDToHandle(card.fd(), fds[i], &handles[i]); + FramebufferPlane& plane = m_planes[i]; + + plane.prime_fd = fds[i]; + + r = drmPrimeFDToHandle(card.fd(), fds[i], &plane.handle); if (r) throw invalid_argument(string("drmPrimeFDToHandle: ") + strerror(errno)); + + plane.stride = pitches[i]; + plane.offset = offsets[i]; + plane.size = plane.stride * height; + plane.map = 0; } uint32_t id; + uint32_t bo_handles[4] = { m_planes[0].handle, m_planes[1].handle }; r = drmModeAddFB2(card.fd(), width, height, (uint32_t)format, - handles, pitches, offsets, &id, 0); + bo_handles, pitches, offsets, &id, 0); if (r) throw invalid_argument(string("drmModeAddFB2 failed: ") + strerror(errno)); @@ -54,4 +84,22 @@ ExtFramebuffer::~ExtFramebuffer() drmModeRmFB(card().fd(), id()); } +uint8_t* ExtFramebuffer::map(unsigned plane) +{ + FramebufferPlane& p = m_planes[plane]; + + if (!p.prime_fd) + throw invalid_argument("cannot mmap non-dmabuf fb"); + + if (p.map) + return p.map; + + p.map = (uint8_t *)mmap(0, p.size, PROT_READ | PROT_WRITE, MAP_SHARED, + p.prime_fd, 0); + if (p.map == MAP_FAILED) + throw invalid_argument(string("mmap failed: ") + strerror(errno)); + + return p.map; +} + } |