From 89bfd9d567ced945bf2f4b3a927426c1ad2ee762 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Fri, 2 Oct 2015 21:27:43 +0300 Subject: Add DumbFramebuffer Move the current Framebuffer to DumbFramebuffer, and make a simple Framebuffer as its super class. --- libkms++/framebuffer.cpp | 153 ++++------------------------------------------- 1 file changed, 11 insertions(+), 142 deletions(-) (limited to 'libkms++/framebuffer.cpp') diff --git a/libkms++/framebuffer.cpp b/libkms++/framebuffer.cpp index a37c512..bc1fd51 100644 --- a/libkms++/framebuffer.cpp +++ b/libkms++/framebuffer.cpp @@ -1,166 +1,35 @@ - #include #include #include #include #include -#include -#include -#include #include "kms++.h" -#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) +using namespace std; namespace kms { -Framebuffer::Framebuffer(Card &card, uint32_t width, uint32_t height, const char* fourcc) - :DrmObject(card, DRM_MODE_OBJECT_FB) -{ - uint32_t a, b, c, d; - a = fourcc[0]; - b = fourcc[1]; - c = fourcc[2]; - d = fourcc[3]; - - uint32_t code = ((uint32_t)(a) | ((uint32_t)(b) << 8) | ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24)); - - Create(width, height, code); -} - -Framebuffer::~Framebuffer() -{ - Destroy(); -} - -void Framebuffer::print_short() const -{ - printf("Framebuffer %d\n", id()); -} - -struct FormatPlaneInfo -{ - uint8_t bitspp; /* bits per (macro) pixel */ - uint8_t xsub; - uint8_t ysub; -}; - -struct FormatInfo -{ - uint32_t format; - uint8_t num_planes; - struct FormatPlaneInfo planes[4]; -}; - -static const FormatInfo format_info_array[] = { - /* YUV packed */ - { DRM_FORMAT_UYVY, 1, { { 32, 2, 1 } }, }, - { DRM_FORMAT_YUYV, 1, { { 32, 2, 1 } }, }, - /* YUV semi-planar */ - { DRM_FORMAT_NV12, 2, { { 8, 1, 1, }, { 16, 2, 2 } }, }, - /* RGB16 */ - { DRM_FORMAT_RGB565, 1, { { 16, 1, 1 } }, }, - /* RGB32 */ - { DRM_FORMAT_XRGB8888, 1, { { 32, 1, 1 } }, }, -}; - -static const FormatInfo& find_format(uint32_t format) +Framebuffer::Framebuffer(Card& card, int width, int height) + : DrmObject(card, DRM_MODE_OBJECT_FB), m_width(width), m_height(height) { - for (uint i = 0; i < ARRAY_SIZE(format_info_array); ++i) { - if (format == format_info_array[i].format) - return format_info_array[i]; - } - - throw std::invalid_argument("foo"); } -void Framebuffer::Create(uint32_t width, uint32_t height, uint32_t format) +Framebuffer::Framebuffer(Card& card, uint32_t id) + : DrmObject(card, id, DRM_MODE_OBJECT_FB) { - int r; - - m_width = width; - m_height = height; - m_format = format; - - const FormatInfo& format_info = find_format(format); - - m_num_planes = format_info.num_planes; - - for (int i = 0; i < format_info.num_planes; ++i) { - const FormatPlaneInfo& 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 = m_width / pi.xsub; - creq.height = m_height / pi.ysub; - creq.bpp = pi.bitspp; - r = drmIoctl(card().fd(), DRM_IOCTL_MODE_CREATE_DUMB, &creq); - if (r) - throw std::invalid_argument("foo"); - - plane.handle = creq.handle; - plane.stride = creq.pitch; - plane.size = creq.height * creq.pitch; - - /* - printf("buf %d: %dx%d, bitspp %d, stride %d, size %d\n", - i, creq.width, creq.height, pi->bitspp, plane->stride, plane->size); - */ - - /* prepare buffer for memory mapping */ - struct drm_mode_map_dumb mreq = drm_mode_map_dumb(); - mreq.handle = plane.handle; - r = drmIoctl(card().fd(), DRM_IOCTL_MODE_MAP_DUMB, &mreq); - if (r) - throw std::invalid_argument("foo"); - - /* perform actual memory mapping */ - m_planes[i].map = (uint8_t *)mmap(0, plane.size, PROT_READ | PROT_WRITE, MAP_SHARED, - card().fd(), mreq.offset); - if (plane.map == MAP_FAILED) - throw std::invalid_argument("foo"); + auto fb = drmModeGetFB(card.fd(), id); - /* clear the framebuffer to 0 */ - memset(plane.map, 0, plane.size); - } + m_width = fb->width; + m_height = fb->height; - /* 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] = { 0 }; - uint32_t id; - r = drmModeAddFB2(card().fd(), m_width, m_height, format, - bo_handles, pitches, offsets, &id, 0); - if (r) - throw std::invalid_argument("foo"); - - m_id = id; + drmModeFreeFB(fb); } -void Framebuffer::Destroy() +void Framebuffer::print_short() const { - /* delete framebuffer */ - drmModeRmFB(card().fd(), id()); - - for (uint i = 0; i < m_num_planes; ++i) { - FramebufferPlane& plane = m_planes[i]; - - /* unmap buffer */ - 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); - - } + printf("Framebuffer %d\n", id()); } -void Framebuffer::clear() -{ - for (unsigned i = 0; i < m_num_planes; ++i) - memset(m_planes[i].map, 0, m_planes[i].size); -} } -- cgit v1.2.3