summaryrefslogtreecommitdiff
path: root/db
diff options
context:
space:
mode:
Diffstat (limited to 'db')
-rw-r--r--db/CMakeLists.txt6
-rw-r--r--db/db.cpp309
2 files changed, 315 insertions, 0 deletions
diff --git a/db/CMakeLists.txt b/db/CMakeLists.txt
new file mode 100644
index 0000000..91ab888
--- /dev/null
+++ b/db/CMakeLists.txt
@@ -0,0 +1,6 @@
+include_directories(${LIBDRM_INCLUDE_DIRS})
+link_directories(${LIBDRM_LIBRARY_DIRS})
+
+add_executable (db db.cpp)
+
+target_link_libraries(db kms++ ${LIBDRM_LIBRARIES})
diff --git a/db/db.cpp b/db/db.cpp
new file mode 100644
index 0000000..d119078
--- /dev/null
+++ b/db/db.cpp
@@ -0,0 +1,309 @@
+#include <cstdio>
+#include <algorithm>
+
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <drm_fourcc.h>
+
+#include "kms++.h"
+#include "utils/color.h"
+
+#include "../test.h"
+
+using namespace std;
+using namespace kms;
+
+static void draw_color_bar(Framebuffer& buf, int old_xpos, int xpos, int width);
+
+static void main_loop(Card& card);
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+struct Output
+{
+ Connector* connector;
+ Crtc* crtc;
+ Framebuffer* fbs[2];
+
+ int front_buf;
+ int bar_xpos;
+};
+
+static void do_flip(Output* out);
+
+int main()
+{
+ Card card;
+
+ if (card.master() == false)
+ printf("Not DRM master, modeset may fail\n");
+
+ //card.print_short();
+
+ vector<Output> outputs;
+
+ for (auto conn : card.get_connectors())
+ {
+ if (conn->connected() == false)
+ continue;
+
+ auto mode = conn->get_default_mode();
+
+ Crtc* crtc = conn->get_current_crtc();
+ if (!crtc) {
+ for (auto c : conn->get_possible_crtcs()) {
+ if (find_if(outputs.begin(), outputs.end(), [c](Output o) { return o.crtc == c; }) == outputs.end()) {
+ crtc = c;
+ break;
+ }
+ }
+ }
+
+ if (!crtc) {
+ printf("failed to find crtc\n");
+ return -1;
+ }
+
+ auto fb1 = new Framebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
+ auto fb2 = new Framebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
+
+ printf("conn %u, crtc %u, fb1 %u, fb2 %u\n", conn->id(), crtc->id(), fb1->id(), fb2->id());
+
+ Output output = { };
+ output.connector = conn;
+ output.crtc = crtc;
+ output.fbs[0] = fb1;
+ output.fbs[1] = fb2;
+ outputs.push_back(output);
+ }
+
+ for(auto& out : outputs) {
+ auto conn = out.connector;
+ auto crtc = out.crtc;
+
+ auto mode = conn->get_default_mode();
+ int r = crtc->set_mode(conn, *out.fbs[0], mode);
+ ASSERT(r == 0);
+ }
+
+ for(auto& out : outputs)
+ do_flip(&out);
+
+ main_loop(card);
+
+ for(auto& out : outputs) {
+ delete out.fbs[0];
+ delete out.fbs[1];
+ }
+}
+
+static void do_flip(Output* out)
+{
+ const int bar_width = 20;
+ const int bar_speed = 8;
+
+ auto crtc = out->crtc;
+ auto fb = out->fbs[(out->front_buf + 1) % 2];
+
+ ASSERT(crtc);
+ ASSERT(fb);
+
+ int current_xpos = out->bar_xpos;
+ int old_xpos = (current_xpos + (fb->width() - bar_width - bar_speed)) % (fb->width() - bar_width);
+ int new_xpos = (current_xpos + bar_speed) % (fb->width() - bar_width);
+
+ draw_color_bar(*fb, old_xpos, new_xpos, bar_width);
+
+ out->bar_xpos = new_xpos;
+
+ auto& card = crtc->card();
+
+ if (card.has_atomic()) {
+ int r;
+
+ AtomicReq ctx(card);
+
+ // XXX
+ //ctx.add(plane, card.get_prop("CRTC_X"), 50);
+ //ctx.add(plane, card.get_prop("CRTC_Y"), 50);
+
+ r = ctx.test();
+ ASSERT(r == 0);
+
+ r = ctx.commit();
+ ASSERT(r == 0);
+ } else {
+ int r = drmModePageFlip(card.fd(), crtc->id(), fb->id(), DRM_MODE_PAGE_FLIP_EVENT, out);
+ ASSERT(r == 0);
+ }
+}
+
+static void page_flip_handler(int fd, unsigned int frame,
+ unsigned int sec, unsigned int usec,
+ void *data)
+{
+ //printf("flip event %d, %d, %u, %u, %p\n", fd, frame, sec, usec, data);
+
+ auto out = (Output*)data;
+
+ out->front_buf = (out->front_buf + 1) % 2;
+
+ do_flip(out);
+}
+
+
+static void main_loop(Card& card)
+{
+ drmEventContext ev = {
+ .version = DRM_EVENT_CONTEXT_VERSION,
+ .vblank_handler = 0,
+ .page_flip_handler = page_flip_handler,
+ };
+
+ fd_set fds;
+
+ FD_ZERO(&fds);
+
+ int fd = card.fd();
+
+ printf("press enter to exit\n");
+
+ while (true) {
+ int r;
+
+ FD_SET(0, &fds);
+ FD_SET(fd, &fds);
+
+ r = select(fd + 1, &fds, NULL, NULL, NULL);
+ if (r < 0) {
+ fprintf(stderr, "select() failed with %d: %m\n", errno);
+ break;
+ } else if (FD_ISSET(0, &fds)) {
+ fprintf(stderr, "exit due to user-input\n");
+ break;
+ } else if (FD_ISSET(fd, &fds)) {
+ drmHandleEvent(fd, &ev);
+ }
+ }
+}
+
+
+static const RGB colors32[] = {
+ RGB(255, 255, 255),
+ RGB(255, 0, 0),
+ RGB(255, 255, 255),
+ RGB(0, 255, 0),
+ RGB(255, 255, 255),
+ RGB(0, 0, 255),
+ RGB(255, 255, 255),
+ RGB(200, 200, 200),
+ RGB(255, 255, 255),
+ RGB(100, 100, 100),
+ RGB(255, 255, 255),
+ RGB(50, 50, 50),
+};
+
+static const uint16_t colors16[] = {
+ colors32[0].rgb565(),
+ colors32[1].rgb565(),
+ colors32[2].rgb565(),
+ colors32[3].rgb565(),
+ colors32[4].rgb565(),
+ colors32[5].rgb565(),
+ colors32[6].rgb565(),
+ colors32[7].rgb565(),
+ colors32[8].rgb565(),
+ colors32[9].rgb565(),
+ colors32[10].rgb565(),
+ colors32[11].rgb565(),
+};
+
+static void drm_draw_color_bar_rgb888(Framebuffer& buf, int old_xpos, int xpos, int width)
+{
+ for (unsigned y = 0; y < buf.height(); ++y) {
+ RGB bcol = colors32[y * ARRAY_SIZE(colors32) / buf.height()];
+ uint32_t *line = (uint32_t*)(buf.map(0) + buf.stride(0) * y);
+
+ if (old_xpos >= 0) {
+ for (int x = old_xpos; x < old_xpos + width; ++x)
+ line[x] = 0;
+ }
+
+ for (int x = xpos; x < xpos + width; ++x)
+ line[x] = bcol.raw;
+ }
+}
+
+static void drm_draw_color_bar_rgb565(Framebuffer& buf, int old_xpos, int xpos, int width)
+{
+ static_assert(ARRAY_SIZE(colors32) == ARRAY_SIZE(colors16), "bad colors arrays");
+
+ for (unsigned y = 0; y < buf.height(); ++y) {
+ uint16_t bcol = colors16[y * ARRAY_SIZE(colors16) / buf.height()];
+ uint16_t *line = (uint16_t*)(buf.map(0) + buf.stride(0) * y);
+
+ if (old_xpos >= 0) {
+ for (int x = old_xpos; x < old_xpos + width; ++x)
+ line[x] = 0;
+ }
+
+ for (int x = xpos; x < xpos + width; ++x)
+ line[x] = bcol;
+ }
+}
+
+static void drm_draw_color_bar_semiplanar_yuv(Framebuffer& buf, int old_xpos, int xpos, int width)
+{
+ const uint8_t colors[] = {
+ 0xff,
+ 0x00,
+ 0xff,
+ 0x20,
+ 0xff,
+ 0x40,
+ 0xff,
+ 0x80,
+ 0xff,
+ };
+
+ for (unsigned y = 0; y < buf.height(); ++y) {
+ unsigned int bcol = colors[y * ARRAY_SIZE(colors) / buf.height()];
+ uint8_t *line = (uint8_t*)(buf.map(0) + buf.stride(0) * y);
+
+ if (old_xpos >= 0) {
+ for (int x = old_xpos; x < old_xpos + width; ++x)
+ line[x] = 0;
+ }
+
+ for (int x = xpos; x < xpos + width; ++x)
+ line[x] = bcol;
+ }
+}
+
+static void draw_color_bar(Framebuffer& buf, int old_xpos, int xpos, int width)
+{
+ switch (buf.format()) {
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ // XXX not right but gets something on the screen
+ drm_draw_color_bar_semiplanar_yuv(buf, old_xpos, xpos, width);
+ break;
+
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_UYVY:
+ // XXX not right but gets something on the screen
+ drm_draw_color_bar_rgb565(buf, old_xpos, xpos, width);
+ break;
+
+ case DRM_FORMAT_RGB565:
+ drm_draw_color_bar_rgb565(buf, old_xpos, xpos, width);
+ break;
+
+ case DRM_FORMAT_XRGB8888:
+ drm_draw_color_bar_rgb888(buf, old_xpos, xpos, width);
+ break;
+
+ default:
+ ASSERT(false);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 08:09:10 +0000