From d79f5780225d2416f3fff9dcebeac1d64110bb94 Mon Sep 17 00:00:00 2001 From: Drew DeVault Date: Tue, 6 Jun 2017 10:54:53 -0400 Subject: [PATCH 1/2] Update README.md, add CONTRIBUTING.md --- CONTRIBUTING.md | 204 ++++++++++++++++++++++++++++++++++++++++++++++++ README.md | 28 ++++++- 2 files changed, 230 insertions(+), 2 deletions(-) create mode 100644 CONTRIBUTING.md diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 00000000..913eb279 --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,204 @@ +# Contributing to wlroots + +Contributing just involves sending a pull request. You will probably be more +successful with your contribution if you visit the [IRC +channel](http://webchat.freenode.net/?channels=sway&uio=d4) upfront and discuss +your plans. + +## Pull Requests + +If you already have your own pull request habits, feel free to use them. If you +don't, however, allow me to make a suggestion: feature branches pulled from +upstream. Try this: + +1. Fork sway +2. Clone your fork +3. git remote add upstream https://github.com/SirCmpwn/wlroots + +You only need to do this once. You're never going to use your fork's master +branch. Instead, when you start working on a feature, do this: + +1. git fetch upstream +2. git checkout -b add-so-and-so-feature upstream/master +3. work +4. git push -u origin add-so-and-so-feature +5. Make pull request from your feature branch + +## Commit Messages + +Please strive to write good commit messages. Here's some guidelines to follow: + +The first line should be limited to 50 characters and should be a sentence that +completes the thought [When applied, this commit will...] "Implement cmd_move" +or "Fix #742" or "Improve performance of arrange_windows on ARM" or similar. + +The subsequent lines should be seperated from the subject line by a single +blank line, and include optional details. In this you can give justification +for the change, [reference Github +issues](https://help.github.com/articles/closing-issues-via-commit-messages/), +or explain some of the subtler details of your patch. This is important because +when someone finds a line of code they don't understand later, they can use the +`git blame` command to find out what the author was thinking when they wrote +it. It's also easier to review your pull requests if they're seperated into +logical commits that have good commit messages and justify themselves in the +extended commit description. + +As a good rule of thumb, anything you might put into the pull request +description on Github is probably fair game for going into the extended commit +message as well. + +## Coding Style + +wlroots is written in C with the same style as Sway. The style guidelines is +[kernel +style](https://www.kernel.org/doc/Documentation/process/coding-style.rst), but +all braces go on the same line (*"but K&R says so!" is a silly way of justifying +something*). Some points to note: + +* Do not use typedefs unless you have a good reason +* Do not use macros unless you have a *really* good reason +* Align `case` with `switch` +* Tabs, not spaces +* `char *pointer` - note position of `*` +* Use logging with reckless abandon +* Always include braces for if/for/while/etc, even for one-liners + +An example of well formatted code: + +```C +#include +#include +#include "log.h" +#include "example.h" + +struct foobar { + char *foo; + int bar; + long baz; +}; // Do not typedef without a good reason + +int main(int argc, const char **argv) { + if (argc != 4) { + sway_abort("Do not run this program manually. See man 5 sway and look for output options."); + } + + if (!registry->desktop_shell) { + sway_abort("swaybg requires the compositor to support the desktop-shell extension."); + } + + int desired_output = atoi(argv[1]); + sway_log(L_INFO, "Using output %d of %d", desired_output, registry->outputs->length); + int i; + struct output_state *output = registry->outputs->items[desired_output]; + struct window *window = window_setup(registry, 100, 100, false); + if (!window) { + sway_abort("Failed to create surfaces."); + } + window->width = output->width; + window->height = output->height; + desktop_shell_set_background(registry->desktop_shell, output->output, window->surface); + list_add(surfaces, window); + + cairo_surface_t *image = cairo_image_surface_create_from_png(argv[2]); + double width = cairo_image_surface_get_width(image); + double height = cairo_image_surface_get_height(image); + + const char *scaling_mode_str = argv[3]; + enum scaling_mode scaling_mode; + if (strcmp(scaling_mode_str, "stretch") == 0) { + scaling_mode = SCALING_MODE_STRETCH; + } else if (strcmp(scaling_mode_str, "fill") == 0) { + scaling_mode = SCALING_MODE_FILL; + } else if (strcmp(scaling_mode_str, "fit") == 0) { + scaling_mode = SCALING_MODE_FIT; + } else if (strcmp(scaling_mode_str, "center") == 0) { + scaling_mode = SCALING_MODE_CENTER; + } else if (strcmp(scaling_mode_str, "tile") == 0) { + scaling_mode = SCALING_MODE_TILE; + } else { + sway_abort("Unsupported scaling mode: %s", scaling_mode_str); + } + + for (i = 0; i < surfaces->length; ++i) { + struct window *window = surfaces->items[i]; + if (window_prerender(window) && window->cairo) { + switch (scaling_mode) { + case SCALING_MODE_STRETCH: + cairo_scale(window->cairo, + (double) window->width / width, + (double) window->height / height); + cairo_set_source_surface(window->cairo, image, 0, 0); + break; + case SCALING_MODE_FILL: + { + double window_ratio = (double) window->width / window->height; + double bg_ratio = width / height; + + if (window_ratio > bg_ratio) { + double scale = (double) window->width / width; + cairo_scale(window->cairo, scale, scale); + cairo_set_source_surface(window->cairo, image, + 0, + (double) window->height/2 / scale - height/2); + } else { + double scale = (double) window->height / height; + cairo_scale(window->cairo, scale, scale); + cairo_set_source_surface(window->cairo, image, + (double) window->width/2 / scale - width/2, + 0); + } + break; + } + case SCALING_MODE_FIT: + { + double window_ratio = (double) window->width / window->height; + double bg_ratio = width / height; + + if (window_ratio > bg_ratio) { + double scale = (double) window->height / height; + cairo_scale(window->cairo, scale, scale); + cairo_set_source_surface(window->cairo, image, + (double) window->width/2 / scale - width/2, + 0); + } else { + double scale = (double) window->width / width; + cairo_scale(window->cairo, scale, scale); + cairo_set_source_surface(window->cairo, image, + 0, + (double) window->height/2 / scale - height/2); + } + break; + } + case SCALING_MODE_CENTER: + cairo_set_source_surface(window->cairo, image, + (double) window->width/2 - width/2, + (double) window->height/2 - height/2); + break; + case SCALING_MODE_TILE: + { + cairo_pattern_t *pattern = cairo_pattern_create_for_surface(image); + cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT); + cairo_set_source(window->cairo, pattern); + break; + } + default: + sway_abort("Scaling mode '%s' not implemented yet!", scaling_mode_str); + } + + cairo_paint(window->cairo); + + window_render(window); + } + } + + while (wl_display_dispatch(registry->display) != -1); + + for (i = 0; i < surfaces->length; ++i) { + struct window *window = surfaces->items[i]; + window_teardown(window); + } + list_free(surfaces); + registry_teardown(registry); + return 0; +} +``` diff --git a/README.md b/README.md index 74a2385e..75d191d4 100644 --- a/README.md +++ b/README.md @@ -1,5 +1,29 @@ # wlroots -A set of utility libraries for Wayland compositors. +Pluggable, composable modules for building a Wayland compositor. -WIP +WIP - [Status](https://github.com/SirCmpwn/wlroots/issues/9) + +## Building + +Install dependencies: + +* cmake +* wayland +* wayland-protocols +* EGL +* GLESv2 +* DRM +* GBM +* libinput +* udev +* systemd (optional, for logind support) +* asciidoc (optional, for man pages) + +Run these commands: + + mkdir build + cd build + cmake -DCMAKE_BUILD_TYPE=Release .. + make + sudo make install From 632a7acb03f4c4b8d06fdf7f8d7839db27cde538 Mon Sep 17 00:00:00 2001 From: Scott Anderson Date: Thu, 8 Jun 2017 00:39:40 +1200 Subject: [PATCH 2/2] Filled out more wlr_output fields. --- backend/drm/drm.c | 119 ++++++++++++++++++++++++++++++++------ example/main.c | 3 + include/backend/drm/drm.h | 1 - include/wlr/types.h | 7 +-- types/wlr_output.c | 2 - 5 files changed, 107 insertions(+), 25 deletions(-) diff --git a/backend/drm/drm.c b/backend/drm/drm.c index 2523eaf0..d949cca8 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -150,14 +150,14 @@ static bool display_init_renderer(struct wlr_drm_renderer *renderer, output->gbm = gbm_surface_create(renderer->gbm, mode->width, mode->height, GBM_FORMAT_XRGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING); if (!output->gbm) { - wlr_log(L_ERROR, "Failed to create GBM surface for %s: %s", output->name, + wlr_log(L_ERROR, "Failed to create GBM surface for %s: %s", output->wlr_output->name, strerror(errno)); return false; } output->egl = wlr_egl_create_surface(&renderer->egl, output->gbm); if (output->egl == EGL_NO_SURFACE) { - wlr_log(L_ERROR, "Failed to create EGL surface for %s", output->name); + wlr_log(L_ERROR, "Failed to create EGL surface for %s", output->wlr_output->name); return false; } @@ -183,7 +183,7 @@ static bool wlr_drm_output_set_mode(struct wlr_output_state *output, struct wlr_backend_state *state = wl_container_of(output->renderer, state, renderer); - wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", output->name, + wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", output->wlr_output->name, mode->width, mode->height, mode->refresh); drmModeConnector *conn = drmModeGetConnector(state->fd, output->connector); @@ -193,7 +193,7 @@ static bool wlr_drm_output_set_mode(struct wlr_output_state *output, } if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) { - wlr_log(L_ERROR, "%s is not connected", output->name); + wlr_log(L_ERROR, "%s is not connected", output->wlr_output->name); goto error; } @@ -228,7 +228,7 @@ static bool wlr_drm_output_set_mode(struct wlr_output_state *output, drmModeFreeResources(res); if (!success) { - wlr_log(L_ERROR, "Failed to find CRTC for %s", output->name); + wlr_log(L_ERROR, "Failed to find CRTC for %s", output->wlr_output->name); goto error; } @@ -238,7 +238,7 @@ static bool wlr_drm_output_set_mode(struct wlr_output_state *output, output->wlr_output->current_mode = mode; if (!display_init_renderer(&state->renderer, output)) { - wlr_log(L_ERROR, "Failed to initalise renderer for %s", output->name); + wlr_log(L_ERROR, "Failed to initalise renderer for %s", output->wlr_output->name); goto error; } @@ -298,6 +298,87 @@ static int32_t calculate_refresh_rate(drmModeModeInfo *mode) { return refresh; } +// Constructed from http://edid.tv/manufacturer +const char *get_manufacturer(uint16_t id) { +#define ID(a, b, c) ((a & 0x1f) << 10) | ((b & 0x1f) << 5) | (c & 0x1f) + switch (id) { + case ID('A', 'A', 'A'): return "Avolites Ltd"; + case ID('A', 'C', 'I'): return "Ancor Communications Inc"; + case ID('A', 'C', 'R'): return "Acer Technologies"; + case ID('A', 'P', 'P'): return "Apple Computer Inc"; + case ID('B', 'N', 'O'): return "Bang & Olufsen"; + case ID('C', 'M', 'N'): return "Chimei Innolux Corporation"; + case ID('C', 'M', 'O'): return "Chi Mei Optoelectronics corp."; + case ID('C', 'R', 'O'): return "Extraordinary Technologies PTY Limited"; + case ID('D', 'E', 'L'): return "Dell Inc."; + case ID('D', 'O', 'N'): return "DENON, Ltd."; + case ID('E', 'N', 'C'): return "Eizo Nanao Corporation"; + case ID('E', 'P', 'H'): return "Epiphan Systems Inc."; + case ID('F', 'U', 'S'): return "Fujitsu Siemens Computers GmbH"; + case ID('G', 'S', 'M'): return "Goldstar Company Ltd"; + case ID('H', 'I', 'Q'): return "Kaohsiung Opto Electronics Americas, Inc."; + case ID('H', 'S', 'D'): return "HannStar Display Corp"; + case ID('H', 'W', 'P'): return "Hewlett Packard"; + case ID('I', 'N', 'T'): return "Interphase Corporation"; + case ID('I', 'V', 'M'): return "Iiyama North America"; + case ID('L', 'E', 'N'): return "Lenovo Group Limited"; + case ID('M', 'A', 'X'): return "Rogen Tech Distribution Inc"; + case ID('M', 'E', 'G'): return "Abeam Tech Ltd"; + case ID('M', 'E', 'I'): return "Panasonic Industry Company"; + case ID('M', 'T', 'C'): return "Mars-Tech Corporation"; + case ID('M', 'T', 'X'): return "Matrox"; + case ID('N', 'E', 'C'): return "NEC Corporation"; + case ID('O', 'N', 'K'): return "ONKYO Corporation"; + case ID('O', 'R', 'N'): return "ORION ELECTRIC CO., LTD."; + case ID('O', 'T', 'M'): return "Optoma Corporation"; + case ID('O', 'V', 'R'): return "Oculus VR, Inc."; + case ID('P', 'H', 'L'): return "Philips Consumer Electronics Company"; + case ID('P', 'I', 'O'): return "Pioneer Electronic Corporation"; + case ID('P', 'N', 'R'): return "Planar Systems, Inc."; + case ID('Q', 'D', 'S'): return "Quanta Display Inc."; + case ID('S', 'A', 'M'): return "Samsung Electric Company"; + case ID('S', 'E', 'C'): return "Seiko Epson Corporation"; + case ID('S', 'H', 'P'): return "Sharp Corporation"; + case ID('S', 'I', 'I'): return "Silicon Image, Inc."; + case ID('S', 'N', 'Y'): return "Sony"; + case ID('T', 'O', 'P'): return "Orion Communications Co., Ltd."; + case ID('T', 'S', 'B'): return "Toshiba America Info Systems Inc"; + case ID('T', 'S', 'T'): return "Transtream Inc"; + case ID('U', 'N', 'K'): return "Unknown"; + case ID('V', 'I', 'Z'): return "VIZIO, Inc"; + case ID('V', 'S', 'C'): return "ViewSonic Corporation"; + case ID('Y', 'M', 'H'): return "Yamaha Corporation"; + default: return "Unknown"; + } +#undef ID +} + +/* See https://en.wikipedia.org/wiki/Extended_Display_Identification_Data for layout of EDID data. + * We don't parse the EDID properly. We just expect to receive valid data. + */ +static void parse_edid(struct wlr_output *restrict output, const uint8_t *restrict data) { + uint32_t id = (data[8] << 8) | data[9]; + snprintf(output->make, sizeof(output->make), "%s", get_manufacturer(id)); + + output->phys_width = ((data[68] & 0xf0) << 4) | data[66]; + output->phys_height = ((data[68] & 0x0f) << 8) | data[67]; + + for (size_t i = 72; i <= 108; i += 18) { + uint16_t flag = (data[i] << 8) | data[i + 1]; + if (flag == 0 && data[i + 3] == 0xFC) { + sprintf(output->model, "%.13s", &data[i + 5]); + + // Monitor names are terminated by newline if they're too short + char *nl = strchr(output->model, '\n'); + if (nl) { + *nl = '\0'; + } + + break; + } + } +} + static void scan_property_ids(int fd, drmModeConnector *conn, struct wlr_output_state *output) { for (int i = 0; i < conn->count_props; ++i) { @@ -306,16 +387,18 @@ static void scan_property_ids(int fd, drmModeConnector *conn, continue; } - // I think this is guranteed to exist if (strcmp(prop->name, "DPMS") == 0) { output->props.dpms = prop->prop_id; + } else if (strcmp(prop->name, "EDID") == 0) { + drmModePropertyBlobRes *edid = drmModeGetPropertyBlob(fd, conn->prop_values[i]); + if (!edid) { + drmModeFreeProperty(prop); + continue; + } - /* There may be more properties we want to get, - * but since it's currently only this, we exit early - */ + parse_edid(output->wlr_output, edid->data); - drmModeFreeProperty(prop); - break; + drmModeFreePropertyBlob(edid); } drmModeFreeProperty(prop); @@ -363,7 +446,7 @@ void wlr_drm_scan_connectors(struct wlr_backend_state *state) { output->connector = id; // TODO: Populate more wlr_output fields // TODO: Move this to wlr_output->name - snprintf(output->name, sizeof(output->name), "%s-%"PRIu32, + snprintf(wlr_output->name, sizeof(wlr_output->name), "%s-%"PRIu32, conn_name[conn->connector_type], conn->connector_type_id); @@ -376,7 +459,7 @@ void wlr_drm_scan_connectors(struct wlr_backend_state *state) { scan_property_ids(state->fd, conn, output); list_add(state->outputs, output); - wlr_log(L_INFO, "Found display '%s'", output->name); + wlr_log(L_INFO, "Found display '%s'", wlr_output->name); } else { output = state->outputs->items[index]; wlr_output = output->wlr_output; @@ -386,7 +469,7 @@ void wlr_drm_scan_connectors(struct wlr_backend_state *state) { if (output->state == DRM_OUTPUT_DISCONNECTED && conn->connection == DRM_MODE_CONNECTED) { - wlr_log(L_INFO, "'%s' connected", output->name); + wlr_log(L_INFO, "'%s' connected", output->wlr_output->name); wlr_log(L_INFO, "Detected modes:"); for (int i = 0; i < conn->count_modes; ++i) { @@ -407,12 +490,12 @@ void wlr_drm_scan_connectors(struct wlr_backend_state *state) { } output->state = DRM_OUTPUT_NEEDS_MODESET; - wlr_log(L_INFO, "Sending modesetting signal for '%s'", output->name); + wlr_log(L_INFO, "Sending modesetting signal for '%s'", output->wlr_output->name); wl_signal_emit(&state->backend->events.output_add, wlr_output); } else if (output->state == DRM_OUTPUT_CONNECTED && conn->connection != DRM_MODE_CONNECTED) { - wlr_log(L_INFO, "'%s' disconnected", output->name); + wlr_log(L_INFO, "'%s' disconnected", output->wlr_output->name); wlr_drm_output_cleanup(output, false); } @@ -487,7 +570,7 @@ void wlr_drm_output_cleanup(struct wlr_output_state *output, bool restore) { if (restore) { restore_output(output, renderer->fd); } - wlr_log(L_INFO, "Emmiting destruction signal for '%s'", output->name); + wlr_log(L_INFO, "Emmiting destruction signal for '%s'", output->wlr_output->name); wl_signal_emit(&state->backend->events.output_remove, output->wlr_output); break; case DRM_OUTPUT_DISCONNECTED: diff --git a/example/main.c b/example/main.c index 27d598e6..87999e11 100644 --- a/example/main.c +++ b/example/main.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include #include @@ -54,6 +55,8 @@ void output_add(struct wl_listener *listener, void *data) { struct wlr_output *output = data; struct state *state = wl_container_of(listener, state, output_add); fprintf(stderr, "Output '%s' added\n", output->name); + fprintf(stderr, "%s %s %"PRId32"mm x %"PRId32"mm\n", output->make, output->model, + output->phys_width, output->phys_height); wlr_output_set_mode(output, output->modes->items[0]); struct output_state *ostate = calloc(1, sizeof(struct output_state)); ostate->output = output; diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h index 004f3a10..2d063adb 100644 --- a/include/backend/drm/drm.h +++ b/include/backend/drm/drm.h @@ -34,7 +34,6 @@ struct wlr_output_state { struct wlr_output *wlr_output; enum wlr_drm_output_state state; uint32_t connector; - char name[16]; struct { uint32_t dpms; diff --git a/include/wlr/types.h b/include/wlr/types.h index 4870b84c..02c2f087 100644 --- a/include/wlr/types.h +++ b/include/wlr/types.h @@ -22,11 +22,10 @@ struct wlr_output { struct wlr_output_state *state; uint32_t flags; - char *name; - char *make; - char *model; + char name[16]; + char make[48]; + char model[16]; uint32_t scale; - int32_t x, y; int32_t phys_width, phys_height; // mm int32_t subpixel; // enum wl_output_subpixel int32_t transform; // enum wl_output_transform diff --git a/types/wlr_output.c b/types/wlr_output.c index 826404a1..a9f91c4d 100644 --- a/types/wlr_output.c +++ b/types/wlr_output.c @@ -17,8 +17,6 @@ struct wlr_output *wlr_output_create(struct wlr_output_impl *impl, void wlr_output_destroy(struct wlr_output *output) { if (!output) return; output->impl->destroy(output->state); - if (output->make) free(output->make); - if (output->model) free(output->model); for (size_t i = 0; output->modes && i < output->modes->length; ++i) { free(output->modes->items[i]); }