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-rw-r--r--libkms++/decls.h1
-rw-r--r--libkms++/dumbframebuffer.cpp167
-rw-r--r--libkms++/dumbframebuffer.h39
-rw-r--r--libkms++/framebuffer.cpp153
-rw-r--r--libkms++/framebuffer.h30
-rw-r--r--libkms++/kms++.h1
6 files changed, 224 insertions, 167 deletions
diff --git a/libkms++/decls.h b/libkms++/decls.h
index c2cf09f..1415f1f 100644
--- a/libkms++/decls.h
+++ b/libkms++/decls.h
@@ -8,6 +8,7 @@ class Connector;
class Crtc;
class Encoder;
class Framebuffer;
+class DumbFramebuffer;
class DrmObject;
class Plane;
class Property;
diff --git a/libkms++/dumbframebuffer.cpp b/libkms++/dumbframebuffer.cpp
new file mode 100644
index 0000000..8e77604
--- /dev/null
+++ b/libkms++/dumbframebuffer.cpp
@@ -0,0 +1,167 @@
+
+#include <cstring>
+#include <stdexcept>
+#include <sys/mman.h>
+#include <xf86drm.h>
+#include <xf86drmMode.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 char* fourcc)
+ :Framebuffer(card, width, height)
+{
+ 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);
+}
+
+DumbFramebuffer::~DumbFramebuffer()
+{
+ Destroy();
+}
+
+void DumbFramebuffer::print_short() const
+{
+ printf("DumbFramebuffer %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)
+{
+ 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 DumbFramebuffer::Create(uint32_t width, uint32_t height, uint32_t format)
+{
+ int r;
+
+ 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 = width / pi.xsub;
+ creq.height = 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");
+
+ /* clear the framebuffer to 0 */
+ memset(plane.map, 0, plane.size);
+ }
+
+ /* 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(), width, height, format,
+ bo_handles, pitches, offsets, &id, 0);
+ if (r)
+ throw std::invalid_argument("foo");
+
+ m_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 */
+ 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);
+
+ }
+}
+
+void DumbFramebuffer::clear()
+{
+ for (unsigned i = 0; i < m_num_planes; ++i)
+ memset(m_planes[i].map, 0, m_planes[i].size);
+}
+
+}
diff --git a/libkms++/dumbframebuffer.h b/libkms++/dumbframebuffer.h
new file mode 100644
index 0000000..e7cafb6
--- /dev/null
+++ b/libkms++/dumbframebuffer.h
@@ -0,0 +1,39 @@
+#pragma once
+
+#include "framebuffer.h"
+
+namespace kms
+{
+class DumbFramebuffer : public Framebuffer
+{
+public:
+ DumbFramebuffer(Card& card, uint32_t width, uint32_t height, const char* fourcc);
+ virtual ~DumbFramebuffer();
+
+ void print_short() const;
+
+ uint32_t format() const { return m_format; }
+
+ uint8_t* map(unsigned plane) const { return m_planes[plane].map; }
+ uint32_t stride(unsigned plane) const { return m_planes[plane].stride; }
+ uint32_t size(unsigned plane) const { return m_planes[plane].size; }
+
+ void clear();
+
+private:
+ struct FramebufferPlane {
+ uint32_t handle;
+ uint32_t size;
+ uint32_t stride;
+ uint8_t *map;
+ };
+
+ void Create(uint32_t width, uint32_t height, uint32_t format);
+ void Destroy();
+
+ unsigned m_num_planes;
+ struct FramebufferPlane m_planes[4];
+
+ uint32_t m_format;
+};
+}
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 <cstring>
#include <stdexcept>
#include <sys/mman.h>
#include <xf86drm.h>
#include <xf86drmMode.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
{
-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);
-}
}
diff --git a/libkms++/framebuffer.h b/libkms++/framebuffer.h
index 2710528..33349d8 100644
--- a/libkms++/framebuffer.h
+++ b/libkms++/framebuffer.h
@@ -4,41 +4,21 @@
namespace kms
{
-
class Framebuffer : public DrmObject
{
public:
- Framebuffer(Card& card, uint32_t width, uint32_t height, const char* fourcc);
- virtual ~Framebuffer();
-
- void print_short() const;
+ Framebuffer(Card& card, uint32_t id);
+ virtual ~Framebuffer() { }
uint32_t width() const { return m_width; }
uint32_t height() const { return m_height; }
- uint32_t format() const { return m_format; }
-
- uint8_t* map(unsigned plane) const { return m_planes[plane].map; }
- uint32_t stride(unsigned plane) const { return m_planes[plane].stride; }
- uint32_t size(unsigned plane) const { return m_planes[plane].size; }
- void clear();
+ virtual void print_short() const;
+protected:
+ Framebuffer(Card& card, int width, int height);
private:
- struct FramebufferPlane {
- uint32_t handle;
- uint32_t size;
- uint32_t stride;
- uint8_t *map;
- };
-
- void Create(uint32_t width, uint32_t height, uint32_t format);
- void Destroy();
-
- unsigned m_num_planes;
- struct FramebufferPlane m_planes[4];
-
uint32_t m_width;
uint32_t m_height;
- uint32_t m_format;
};
}
diff --git a/libkms++/kms++.h b/libkms++/kms++.h
index 7d6788d..c446a9e 100644
--- a/libkms++/kms++.h
+++ b/libkms++/kms++.h
@@ -6,6 +6,7 @@
#include "crtc.h"
#include "encoder.h"
#include "framebuffer.h"
+#include "dumbframebuffer.h"
#include "plane.h"
#include "property.h"
#include "pipeline.h"
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 06:46:29 +0000