diff options
| -rw-r--r-- | README.md | 62 | ||||
| -rw-r--r-- | app/main.cpp | 32 |
2 files changed, 80 insertions, 14 deletions
@@ -1,7 +1,57 @@ -camera-gstreamer ----------------- +- [how to run camera-gstreamer app](#how-to-run-camera-gstreamer-app) + - [With PipeWire](#with-pipewire) + - [With V4L2](#with-v4l2) + - [Without a physical camera device](#without-a-physical-camera-device) + - [Other Details](#other-details) + - [cmd examples](#cmd-examples) + +how to run camera-gstreamer app +=============================== + +With PipeWire +------------- +- PipeWire is the default path +- attach camera + - attach a camera to Hardware. + - make sure it is enumerated properly with `wpctl status` cmd + - make the desired device node the default node with `wpctl set-default + <camera-node-id>` cmd +- run + - start camera-gstreamer from the UI. + - The app can also be run from cmd prompt, make sure you login with `agl-driver` usr name. + +With V4L2 +--------- +- login with `agl-driver` and start the app with `ENABLE_V4L2_PATH=true camera-gstreamer` cmd +- V4L2 path cannot be taken when the app is run from the UI. + +Without a physical camera device +--------------------------------- + +The Virtual Video Test Driver (vivid) can be used for this purpose. + +- run `modprobe vivid allocators=0x1` cmd +- check dmesg to know the capture device created. +- with PipeWire this device has to be made a default device, check [above](#with-pipewire) on how + to do it. +- with V4L2 use DEFAULT_V4L2_DEVICE to pass this new device + +Other Details +------------- +- For V4L2 path assumes that /dev/video0 is present and is set as a capture device. + - Use DEFAULT_V4L2_DEVICE environmental variable to change it. +- use DEFAULT_DEVICE_WIDTH and DEFAULT_DEVICE_HEIGHT environmental variable to +override the default dimensions. + +cmd examples +------------ +run app with V4L2 path and on `/dev/video24` + +``` +DEFAULT_V4L2_DEVICE=/dev/video24 ENABLE_V4L2_PATH=true camera-gstreamer +``` +run app with default path(PipeWire) with a video frame of height 480 +``` +DEFAULT_DEVICE_HEIGHT=480 camera-gstreamer +``` -Assumes that /dev/video0 is present and is set as a capture device. Use -DEFAULT_V4L2_DEVICE environmental variable to change it. -DEFAULT_V4L2_DEVICE_WIDTH and DEFAULT_V4L2_DEVICE_HEIGHT to specify the -dimensions. diff --git a/app/main.cpp b/app/main.cpp index 4451261..2068143 100644 --- a/app/main.cpp +++ b/app/main.cpp @@ -147,7 +147,7 @@ prune_old_released_buffers(struct window *window) wl_list_for_each_safe(b, b_next, &window->buffer_list, buffer_link) { - if (!b->busy && (b->width != window->width || + if (!b->busy && (b->width != window->width || b->height != window->height)) destroy_buffer(b); } @@ -529,7 +529,7 @@ handle_xdg_toplevel_configure(void *data, struct xdg_toplevel *xdg_toplevel, // use our own macro as C++ can't typecast from (void *) directly WL_ARRAY_FOR_EACH(p, states, uint32_t *) { - uint32_t state = *p; + uint32_t state = *p; switch (state) { case XDG_TOPLEVEL_STATE_FULLSCREEN: window->fullscreen = 1; @@ -713,6 +713,10 @@ int main(int argc, char *argv[]) int width; int height; + // pipewire is default. + char *v4l2_path = getenv("ENABLE_V4L2_PATH"); + bool v4l2 = false; + char pipeline_str[1024]; GError *error = NULL; const char *app_id = "camera-gstreamer"; @@ -731,21 +735,33 @@ int main(int argc, char *argv[]) camera_device = getenv("DEFAULT_V4L2_DEVICE"); if (!camera_device) camera_device = get_first_camera_device(); - width_str = getenv("DEFAULT_V4L2_DEVICE_WIDTH"); + + width_str = getenv("DEFAULT_DEVICE_WIDTH"); if (!width_str) width = WINDOW_WIDTH_SIZE; else width = atoi(width_str); - height_str = getenv("DEFAULT_V4L2_DEVICE_HEIGHT"); + height_str = getenv("DEFAULT_DEVICE_HEIGHT"); if (!height_str) height = WINDOW_HEIGHT_SIZE; else height = atoi(height_str); + if (v4l2_path == NULL) + v4l2 = false; + else if (g_str_equal(v4l2_path, "yes") || g_str_equal(v4l2_path, "true")) + v4l2 = true; + memset(pipeline_str, 0, sizeof(pipeline_str)); - snprintf(pipeline_str, sizeof(pipeline_str), "v4l2src device=%s ! video/x-raw,width=%d,height=%d ! waylandsink", - camera_device, width, height); + + if (v4l2) + snprintf(pipeline_str, sizeof(pipeline_str), "v4l2src device=%s ! video/x-raw,width=%d,height=%d ! waylandsink", + camera_device, width, height); + else + snprintf(pipeline_str, sizeof(pipeline_str), "pipewiresrc ! video/x-raw,width=%d,height=%d ! waylandsink", + width, height); + gst_init(&gargc, &gargv); setbuf(stdout, NULL); @@ -766,7 +782,7 @@ int main(int argc, char *argv[]) return -1; // if you'd want to place the video in a pop-up/dialog type of window: - // agl_shell_desktop_set_app_property(display->agl_shell_desktop, app_id, + // agl_shell_desktop_set_app_property(display->agl_shell_desktop, app_id, // AGL_SHELL_DESKTOP_APP_ROLE_POPUP, // WINDOW_WIDTH_POS_X, WINDOW_WIDTH_POS_Y, // 0, 0, WINDOW_WIDTH_SIZE, WINDOW_HEIGHT_SIZE, @@ -775,7 +791,7 @@ int main(int argc, char *argv[]) // we use the role to set a correspondence between the top level // surface and our application, with the previous call letting the // compositor know that we're one and the same - window = create_window(display, WINDOW_WIDTH_SIZE, WINDOW_HEIGHT_SIZE, app_id); + window = create_window(display, WINDOW_WIDTH_SIZE, WINDOW_HEIGHT_SIZE, app_id); if (!window) { free(gargv); |