mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2025-10-29 05:40:12 -04:00
Add a demo client for dmabuf export
This commit is contained in:
Rostislav Pehlivanov
emersion
parent
a16ad4327a
commit
b9b397ef80
3 changed files with 778 additions and 0 deletions
767
examples/dmabuf-capture.c
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767
examples/dmabuf-capture.c
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@ -0,0 +1,767 @@
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#define _XOPEN_SOURCE 700
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#define _POSIX_C_SOURCE 199309L
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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#include "wlr-export-dmabuf-unstable-v1-client-protocol.h"
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#include <libavformat/avformat.h>
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#include <libavutil/pixdesc.h>
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#include <libavutil/display.h>
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#include <libavutil/hwcontext_drm.h>
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struct wayland_output {
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struct wl_list link;
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uint32_t id;
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struct wl_output *output;
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char *make;
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char *model;
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int width;
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int height;
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AVRational framerate;
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};
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struct capture_context {
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AVClass *class; /* For pretty logging */
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struct wl_display *display;
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struct wl_registry *registry;
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struct zwlr_export_dmabuf_manager_v1 *export_manager;
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struct wl_list output_list;
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/* Target */
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struct wl_output *target_output;
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uint32_t target_client;
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/* Main frame callback */
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struct zwlr_export_dmabuf_frame_v1 *frame_callback;
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/* If something happens during capture */
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int err;
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int quit;
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/* FFmpeg specific parts */
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AVFrame *current_frame;
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AVBufferRef *drm_device_ref;
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AVBufferRef *drm_frames_ref;
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AVBufferRef *mapped_device_ref;
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AVBufferRef *mapped_frames_ref;
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AVFormatContext *avf;
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AVCodecContext *avctx;
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int64_t start_pts;
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/* Config */
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enum AVPixelFormat software_format;
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enum AVHWDeviceType hw_device_type;
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AVDictionary *encoder_opts;
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int is_software_encoder;
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char *hardware_device;
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char *out_filename;
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char *encoder_name;
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float out_bitrate;
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};
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static void output_handle_geometry(void *data, struct wl_output *wl_output,
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int32_t x, int32_t y, int32_t phys_width, int32_t phys_height,
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int32_t subpixel, const char *make, const char *model,
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int32_t transform) {
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struct wayland_output *output = data;
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output->make = av_strdup(make);
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output->model = av_strdup(model);
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}
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static void output_handle_mode(void *data, struct wl_output *wl_output,
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uint32_t flags, int32_t width, int32_t height, int32_t refresh) {
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if (flags & WL_OUTPUT_MODE_CURRENT) {
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struct wayland_output *output = data;
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output->width = width;
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output->height = height;
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output->framerate = (AVRational){ refresh, 1000 };
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}
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}
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static void output_handle_done(void* data, struct wl_output *wl_output) {
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/* Nothing to do */
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}
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static void output_handle_scale(void* data, struct wl_output *wl_output,
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int32_t factor) {
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/* Nothing to do */
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}
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static const struct wl_output_listener output_listener = {
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output_handle_geometry,
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output_handle_mode,
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output_handle_done,
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output_handle_scale,
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};
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static void registry_handle_add(void *data, struct wl_registry *reg,
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uint32_t id, const char *interface, uint32_t ver) {
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struct capture_context *ctx = data;
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if (!strcmp(interface, wl_output_interface.name)) {
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struct wayland_output *output = av_mallocz(sizeof(*output));
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output->id = id;
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output->output = wl_registry_bind(reg, id, &wl_output_interface, 1);
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wl_output_add_listener(output->output, &output_listener, output);
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wl_list_insert(&ctx->output_list, &output->link);
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}
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if (!strcmp(interface, zwlr_export_dmabuf_manager_v1_interface.name)) {
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ctx->export_manager = wl_registry_bind(reg, id,
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&zwlr_export_dmabuf_manager_v1_interface, 1);
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}
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}
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static void remove_output(struct wayland_output *out) {
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wl_list_remove(&out->link);
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av_free(out->make);
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av_free(out->model);
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av_free(out);
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return;
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}
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static struct wayland_output *find_output(struct capture_context *ctx,
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struct wl_output *out, uint32_t id) {
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struct wayland_output *output, *tmp;
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wl_list_for_each_safe(output, tmp, &ctx->output_list, link)
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if ((output->output == out) || (output->id == id))
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return output;
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return NULL;
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}
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static void registry_handle_remove(void *data, struct wl_registry *reg,
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uint32_t id) {
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remove_output(find_output((struct capture_context *)data, NULL, id));
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}
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static const struct wl_registry_listener registry_listener = {
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registry_handle_add,
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registry_handle_remove,
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};
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static void frame_free(void *opaque, uint8_t *data) {
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AVDRMFrameDescriptor *desc = (AVDRMFrameDescriptor *)data;
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for (int i = 0; i < desc->nb_objects; ++i) {
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close(desc->objects[i].fd);
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}
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zwlr_export_dmabuf_frame_v1_destroy(opaque);
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av_free(data);
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}
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static void frame_start(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
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uint32_t width, uint32_t height, uint32_t offset_x, uint32_t offset_y,
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uint32_t buffer_flags, uint32_t flags, uint32_t format,
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uint32_t mod_high, uint32_t mod_low, uint32_t num_objects,
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uint32_t num_planes) {
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struct capture_context *ctx = data;
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int err = 0;
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/* Allocate DRM specific struct */
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AVDRMFrameDescriptor *desc = av_mallocz(sizeof(*desc));
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if (!desc) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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desc->nb_objects = num_objects;
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desc->objects[0].format_modifier = ((uint64_t)mod_high << 32) | mod_low;
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desc->nb_layers = 1;
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desc->layers[0].format = format;
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desc->layers[0].nb_planes = num_planes;
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/* Allocate a frame */
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AVFrame *f = av_frame_alloc();
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if (!f) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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/* Set base frame properties */
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ctx->current_frame = f;
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f->width = width;
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f->height = height;
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f->format = AV_PIX_FMT_DRM_PRIME;
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/* Set the frame data to the DRM specific struct */
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f->buf[0] = av_buffer_create((uint8_t*)desc, sizeof(*desc),
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&frame_free, frame, 0);
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if (!f->buf[0]) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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f->data[0] = (uint8_t*)desc;
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return;
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fail:
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ctx->err = err;
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frame_free(frame, (uint8_t *)desc);
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}
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static void frame_object(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
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uint32_t index, int32_t fd, uint32_t size) {
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struct capture_context *ctx = data;
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AVFrame *f = ctx->current_frame;
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AVDRMFrameDescriptor *desc = (AVDRMFrameDescriptor *)f->data[0];
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desc->objects[index].fd = fd;
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desc->objects[index].size = size;
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}
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static void frame_plane(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
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uint32_t index, uint32_t object_index,
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uint32_t offset, uint32_t stride) {
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struct capture_context *ctx = data;
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AVFrame *f = ctx->current_frame;
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AVDRMFrameDescriptor *desc = (AVDRMFrameDescriptor *)f->data[0];
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desc->layers[0].planes[index].object_index = object_index;
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desc->layers[0].planes[index].offset = offset;
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desc->layers[0].planes[index].pitch = stride;
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}
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static const uint32_t pixfmt_to_drm_map[] = {
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[AV_PIX_FMT_NV12] = WL_SHM_FORMAT_NV12,
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[AV_PIX_FMT_BGRA] = WL_SHM_FORMAT_ARGB8888,
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[AV_PIX_FMT_BGR0] = WL_SHM_FORMAT_XRGB8888,
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[AV_PIX_FMT_RGBA] = WL_SHM_FORMAT_ABGR8888,
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[AV_PIX_FMT_RGB0] = WL_SHM_FORMAT_XBGR8888,
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[AV_PIX_FMT_ABGR] = WL_SHM_FORMAT_RGBA8888,
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[AV_PIX_FMT_0BGR] = WL_SHM_FORMAT_RGBX8888,
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[AV_PIX_FMT_ARGB] = WL_SHM_FORMAT_BGRA8888,
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[AV_PIX_FMT_0RGB] = WL_SHM_FORMAT_BGRX8888,
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};
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static enum AVPixelFormat drm_fmt_to_pixfmt(uint32_t fmt) {
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for (enum AVPixelFormat i = 0; i < AV_PIX_FMT_NB; i++) {
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if (pixfmt_to_drm_map[i] == fmt) {
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return i;
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}
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}
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return AV_PIX_FMT_NONE;
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}
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static int attach_drm_frames_ref(struct capture_context *ctx, AVFrame *f,
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enum AVPixelFormat sw_format) {
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int err = 0;
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AVHWFramesContext *hwfc;
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if (ctx->drm_frames_ref) {
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hwfc = (AVHWFramesContext*)ctx->drm_frames_ref->data;
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if (hwfc->width == f->width && hwfc->height == f->height &&
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hwfc->sw_format == sw_format) {
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goto attach;
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}
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av_buffer_unref(&ctx->drm_frames_ref);
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}
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ctx->drm_frames_ref = av_hwframe_ctx_alloc(ctx->drm_device_ref);
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if (!ctx->drm_frames_ref) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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hwfc = (AVHWFramesContext*)ctx->drm_frames_ref->data;
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hwfc->format = f->format;
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hwfc->sw_format = sw_format;
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hwfc->width = f->width;
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hwfc->height = f->height;
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err = av_hwframe_ctx_init(ctx->drm_frames_ref);
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if (err) {
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av_log(ctx, AV_LOG_ERROR, "AVHWFramesContext init failed: %s!\n",
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av_err2str(err));
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goto fail;
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}
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attach:
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/* Set frame hardware context referencce */
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f->hw_frames_ctx = av_buffer_ref(ctx->drm_frames_ref);
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if (!f->hw_frames_ctx) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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return 0;
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fail:
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av_buffer_unref(&ctx->drm_frames_ref);
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return err;
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}
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static void register_cb(struct capture_context *ctx);
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static void frame_ready(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
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uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec) {
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struct capture_context *ctx = data;
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AVFrame *f = ctx->current_frame;
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AVDRMFrameDescriptor *desc = (AVDRMFrameDescriptor *)f->data[0];
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int err = 0;
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/* Attach the hardware frame context to the frame */
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err = attach_drm_frames_ref(ctx, f, drm_fmt_to_pixfmt(desc->layers[0].format));
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if (err) {
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goto end;
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}
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AVFrame *mapped_frame = av_frame_alloc();
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if (!mapped_frame) {
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err = AVERROR(ENOMEM);
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goto end;
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}
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AVHWFramesContext *mapped_hwfc;
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mapped_hwfc = (AVHWFramesContext *)ctx->mapped_frames_ref->data;
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mapped_frame->format = mapped_hwfc->format;
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/* Set frame hardware context referencce */
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mapped_frame->hw_frames_ctx = av_buffer_ref(ctx->mapped_frames_ref);
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if (!mapped_frame->hw_frames_ctx) {
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err = AVERROR(ENOMEM);
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goto end;
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}
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err = av_hwframe_map(mapped_frame, f, 0);
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if (err) {
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av_log(ctx, AV_LOG_ERROR, "Error mapping: %s!\n", av_err2str(err));
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goto end;
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}
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AVFrame *enc_input = mapped_frame;
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if (ctx->is_software_encoder) {
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AVFrame *soft_frame = av_frame_alloc();
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av_hwframe_transfer_data(soft_frame, mapped_frame, 0);
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av_frame_free(&mapped_frame);
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enc_input = soft_frame;
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}
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/* Nanoseconds */
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enc_input->pts = (((uint64_t)tv_sec_hi) << 32) | tv_sec_lo;
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enc_input->pts *= 1000000000;
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enc_input->pts += tv_nsec;
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if (!ctx->start_pts) {
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ctx->start_pts = enc_input->pts;
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}
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enc_input->pts -= ctx->start_pts;
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enc_input->pts = av_rescale_q(enc_input->pts, (AVRational){ 1, 1000000000 },
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ctx->avctx->time_base);
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do {
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err = avcodec_send_frame(ctx->avctx, enc_input);
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av_frame_free(&enc_input);
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if (err) {
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av_log(ctx, AV_LOG_ERROR, "Error encoding: %s!\n", av_err2str(err));
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goto end;
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}
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while (1) {
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AVPacket pkt;
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av_init_packet(&pkt);
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int ret = avcodec_receive_packet(ctx->avctx, &pkt);
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if (ret == AVERROR(EAGAIN)) {
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break;
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} else if (ret == AVERROR_EOF) {
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av_log(ctx, AV_LOG_INFO, "Encoder flushed!\n");
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ctx->quit = 2;
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goto end;
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} else if (ret) {
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av_log(ctx, AV_LOG_ERROR, "Error encoding: %s!\n",
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av_err2str(ret));
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err = ret;
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goto end;
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}
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pkt.stream_index = 0;
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err = av_interleaved_write_frame(ctx->avf, &pkt);
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av_packet_unref(&pkt);
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|
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if (err) {
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av_log(ctx, AV_LOG_ERROR, "Writing packet fail: %s!\n",
|
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av_err2str(err));
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goto end;
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}
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};
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} while (ctx->quit);
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av_log(NULL, AV_LOG_INFO, "Encoded frame %i!\n", ctx->avctx->frame_number);
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register_cb(ctx);
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end:
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ctx->err = err;
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av_frame_free(&ctx->current_frame);
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}
|
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|
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static void frame_cancel(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
|
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uint32_t reason) {
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struct capture_context *ctx = data;
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av_log(ctx, AV_LOG_WARNING, "Frame cancelled!\n");
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av_frame_free(&ctx->current_frame);
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if (reason != ZWLR_EXPORT_DMABUF_FRAME_V1_CANCEL_REASON_PERNAMENT)
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register_cb(ctx);
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}
|
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|
||||
static const struct zwlr_export_dmabuf_frame_v1_listener frame_listener = {
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frame_start,
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frame_object,
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frame_plane,
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frame_ready,
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frame_cancel,
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};
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|
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static void register_cb(struct capture_context *ctx)
|
||||
{
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ctx->frame_callback =
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zwlr_export_dmabuf_manager_v1_capture_output(ctx->export_manager, 0,
|
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ctx->target_output);
|
||||
|
||||
zwlr_export_dmabuf_frame_v1_add_listener(ctx->frame_callback,
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&frame_listener, ctx);
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}
|
||||
|
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static int init_lavu_hwcontext(struct capture_context *ctx) {
|
||||
|
||||
/* DRM hwcontext */
|
||||
ctx->drm_device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_DRM);
|
||||
if (!ctx->drm_device_ref)
|
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return AVERROR(ENOMEM);
|
||||
|
||||
AVHWDeviceContext *ref_data = (AVHWDeviceContext*)ctx->drm_device_ref->data;
|
||||
AVDRMDeviceContext *hwctx = ref_data->hwctx;
|
||||
|
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/* We don't need a device (we don't even know it and can't open it) */
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||||
hwctx->fd = -1;
|
||||
|
||||
av_hwdevice_ctx_init(ctx->drm_device_ref);
|
||||
|
||||
/* Mapped hwcontext */
|
||||
int err = av_hwdevice_ctx_create(&ctx->mapped_device_ref,
|
||||
ctx->hw_device_type, ctx->hardware_device, NULL, 0);
|
||||
if (err < 0) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Failed to create a hardware device: %s\n",
|
||||
av_err2str(err));
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int set_hwframe_ctx(struct capture_context *ctx,
|
||||
AVBufferRef *hw_device_ctx)
|
||||
{
|
||||
AVHWFramesContext *frames_ctx = NULL;
|
||||
int err = 0;
|
||||
|
||||
if (!(ctx->mapped_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx))) {
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
|
||||
AVHWFramesConstraints *cst =
|
||||
av_hwdevice_get_hwframe_constraints(ctx->mapped_device_ref, NULL);
|
||||
if (!cst) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Failed to get hw device constraints!\n");
|
||||
av_buffer_unref(&ctx->mapped_frames_ref);
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
|
||||
frames_ctx = (AVHWFramesContext *)(ctx->mapped_frames_ref->data);
|
||||
frames_ctx->format = cst->valid_hw_formats[0];
|
||||
frames_ctx->sw_format = ctx->avctx->pix_fmt;
|
||||
frames_ctx->width = ctx->avctx->width;
|
||||
frames_ctx->height = ctx->avctx->height;
|
||||
frames_ctx->initial_pool_size = 16;
|
||||
|
||||
av_hwframe_constraints_free(&cst);
|
||||
|
||||
if ((err = av_hwframe_ctx_init(ctx->mapped_frames_ref)) < 0) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Failed to initialize hw frame context: %s!\n",
|
||||
av_err2str(err));
|
||||
av_buffer_unref(&ctx->mapped_frames_ref);
|
||||
return err;
|
||||
}
|
||||
|
||||
if (!ctx->is_software_encoder) {
|
||||
ctx->avctx->pix_fmt = frames_ctx->format;
|
||||
ctx->avctx->hw_frames_ctx = av_buffer_ref(ctx->mapped_frames_ref);
|
||||
if (!ctx->avctx->hw_frames_ctx) {
|
||||
av_buffer_unref(&ctx->mapped_frames_ref);
|
||||
err = AVERROR(ENOMEM);
|
||||
}
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int init_encoding(struct capture_context *ctx) {
|
||||
int err;
|
||||
|
||||
/* lavf init */
|
||||
err = avformat_alloc_output_context2(&ctx->avf, NULL,
|
||||
NULL, ctx->out_filename);
|
||||
if (err) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Unable to init lavf context!\n");
|
||||
return err;
|
||||
}
|
||||
|
||||
AVStream *st = avformat_new_stream(ctx->avf, NULL);
|
||||
if (!st) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Unable to alloc stream!\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Find encoder */
|
||||
AVCodec *out_codec = avcodec_find_encoder_by_name(ctx->encoder_name);
|
||||
if (!out_codec) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Codec not found (not compiled in lavc?)!\n");
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
ctx->avf->oformat->video_codec = out_codec->id;
|
||||
ctx->is_software_encoder = !(out_codec->capabilities & AV_CODEC_CAP_HARDWARE);
|
||||
|
||||
ctx->avctx = avcodec_alloc_context3(out_codec);
|
||||
if (!ctx->avctx)
|
||||
return 1;
|
||||
|
||||
ctx->avctx->opaque = ctx;
|
||||
ctx->avctx->bit_rate = (int)ctx->out_bitrate*1000000.0f;
|
||||
ctx->avctx->pix_fmt = ctx->software_format;
|
||||
ctx->avctx->time_base = (AVRational){ 1, 1000 };
|
||||
ctx->avctx->compression_level = 7;
|
||||
ctx->avctx->width = find_output(ctx, ctx->target_output, 0)->width;
|
||||
ctx->avctx->height = find_output(ctx, ctx->target_output, 0)->height;
|
||||
|
||||
if (ctx->avf->oformat->flags & AVFMT_GLOBALHEADER)
|
||||
ctx->avctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
|
||||
|
||||
st->id = 0;
|
||||
st->time_base = ctx->avctx->time_base;
|
||||
st->avg_frame_rate = find_output(ctx, ctx->target_output, 0)->framerate;
|
||||
|
||||
/* Init hw frames context */
|
||||
err = set_hwframe_ctx(ctx, ctx->mapped_device_ref);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = avcodec_open2(ctx->avctx, out_codec, &ctx->encoder_opts);
|
||||
if (err) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Cannot open encoder: %s!\n",
|
||||
av_err2str(err));
|
||||
return err;
|
||||
}
|
||||
|
||||
if (avcodec_parameters_from_context(st->codecpar, ctx->avctx) < 0) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Couldn't copy codec params: %s!\n",
|
||||
av_err2str(err));
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Debug print */
|
||||
av_dump_format(ctx->avf, 0, ctx->out_filename, 1);
|
||||
|
||||
/* Open for writing */
|
||||
err = avio_open(&ctx->avf->pb, ctx->out_filename, AVIO_FLAG_WRITE);
|
||||
if (err) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Couldn't open %s: %s!\n", ctx->out_filename,
|
||||
av_err2str(err));
|
||||
return err;
|
||||
}
|
||||
|
||||
err = avformat_write_header(ctx->avf, NULL);
|
||||
if (err) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Couldn't write header: %s!\n", av_err2str(err));
|
||||
return err;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
struct capture_context *q_ctx = NULL;
|
||||
|
||||
void on_quit_signal(int signo) {
|
||||
printf("\r");
|
||||
q_ctx->quit = 1;
|
||||
}
|
||||
|
||||
static int main_loop(struct capture_context *ctx) {
|
||||
int err;
|
||||
|
||||
q_ctx = ctx;
|
||||
|
||||
if (signal(SIGINT, on_quit_signal) == SIG_ERR) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Unable to install signal handler!\n");
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
err = init_lavu_hwcontext(ctx);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = init_encoding(ctx);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
/* Start the frame callback */
|
||||
register_cb(ctx);
|
||||
|
||||
while (!ctx->err && ctx->quit < 2) {
|
||||
while (wl_display_prepare_read(ctx->display) != 0) {
|
||||
wl_display_dispatch_pending(ctx->display);
|
||||
}
|
||||
|
||||
wl_display_flush(ctx->display);
|
||||
|
||||
struct pollfd fds[1] = {
|
||||
{ .fd = wl_display_get_fd(ctx->display), .events = POLLIN },
|
||||
};
|
||||
|
||||
poll(fds, 1, -1);
|
||||
|
||||
if (!(fds[0].revents & POLLIN)) {
|
||||
wl_display_cancel_read(ctx->display);
|
||||
}
|
||||
|
||||
if (fds[0].revents & (POLLERR | POLLHUP | POLLNVAL)) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Error occurred on the display fd!\n");
|
||||
break;
|
||||
}
|
||||
|
||||
if (fds[0].revents & POLLIN) {
|
||||
if (wl_display_read_events(ctx->display) < 0) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Failed to read Wayland events!\n");
|
||||
break;
|
||||
}
|
||||
wl_display_dispatch_pending(ctx->display);
|
||||
}
|
||||
}
|
||||
|
||||
err = av_write_trailer(ctx->avf);
|
||||
if (err) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Error writing trailer: %s!\n",
|
||||
av_err2str(err));
|
||||
return err;
|
||||
}
|
||||
|
||||
av_log(ctx, AV_LOG_INFO, "Wrote trailer!\n");
|
||||
|
||||
return ctx->err;
|
||||
}
|
||||
|
||||
static int init(struct capture_context *ctx) {
|
||||
ctx->display = wl_display_connect(NULL);
|
||||
if (!ctx->display) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Failed to connect to display!\n");
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
wl_list_init(&ctx->output_list);
|
||||
|
||||
ctx->registry = wl_display_get_registry(ctx->display);
|
||||
wl_registry_add_listener(ctx->registry, ®istry_listener, ctx);
|
||||
|
||||
wl_display_roundtrip(ctx->display);
|
||||
wl_display_dispatch(ctx->display);
|
||||
|
||||
if (!ctx->export_manager) {
|
||||
av_log(ctx, AV_LOG_ERROR, "Compositor doesn't support %s!\n",
|
||||
zwlr_export_dmabuf_manager_v1_interface.name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void print_capturable_surfaces(struct capture_context *ctx) {
|
||||
|
||||
struct wayland_output *o, *tmp_o;
|
||||
wl_list_for_each_reverse_safe(o, tmp_o, &ctx->output_list, link) {
|
||||
ctx->target_output = o->output; /* Default is first, whatever */
|
||||
av_log(ctx, AV_LOG_INFO, "Capturable output: %s Model: %s:\n",
|
||||
o->make, o->model);
|
||||
}
|
||||
|
||||
av_log(ctx, AV_LOG_INFO, "Capturing from output: %s!\n",
|
||||
find_output(ctx, ctx->target_output, 0)->model);
|
||||
}
|
||||
|
||||
static void uninit(struct capture_context *ctx);
|
||||
|
||||
int main(int argc, char *argv[]) {
|
||||
int err;
|
||||
struct capture_context ctx = { 0 };
|
||||
ctx.class = &((AVClass) {
|
||||
.class_name = "dmabuf-capture",
|
||||
.item_name = av_default_item_name,
|
||||
.version = LIBAVUTIL_VERSION_INT,
|
||||
});
|
||||
|
||||
err = init(&ctx);
|
||||
if (err)
|
||||
goto end;
|
||||
|
||||
print_capturable_surfaces(&ctx);
|
||||
|
||||
ctx.hw_device_type = av_hwdevice_find_type_by_name("vaapi");
|
||||
ctx.hardware_device = "/dev/dri/renderD128";
|
||||
|
||||
ctx.encoder_name = "libx264";
|
||||
ctx.software_format = av_get_pix_fmt("nv12");
|
||||
av_dict_set(&ctx.encoder_opts, "preset", "veryfast", 0);
|
||||
|
||||
ctx.out_filename = "dmabuf_recording_01.mkv";
|
||||
ctx.out_bitrate = 29.2f; /* Mbps */
|
||||
|
||||
err = main_loop(&ctx);
|
||||
if (err)
|
||||
goto end;
|
||||
|
||||
end:
|
||||
uninit(&ctx);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void uninit(struct capture_context *ctx) {
|
||||
struct wayland_output *output, *tmp_o;
|
||||
wl_list_for_each_safe(output, tmp_o, &ctx->output_list, link)
|
||||
remove_output(output);
|
||||
|
||||
if (ctx->export_manager)
|
||||
zwlr_export_dmabuf_manager_v1_destroy(ctx->export_manager);
|
||||
|
||||
av_buffer_unref(&ctx->drm_frames_ref);
|
||||
av_buffer_unref(&ctx->drm_device_ref);
|
||||
av_buffer_unref(&ctx->mapped_frames_ref);
|
||||
av_buffer_unref(&ctx->mapped_device_ref);
|
||||
|
||||
av_dict_free(&ctx->encoder_opts);
|
||||
|
||||
avcodec_close(ctx->avctx);
|
||||
if (ctx->avf) {
|
||||
avio_closep(&ctx->avf->pb);
|
||||
}
|
||||
avformat_free_context(ctx->avf);
|
||||
}
|
||||
|
|
@ -1,6 +1,10 @@
|
|||
threads = dependency('threads')
|
||||
wayland_cursor = dependency('wayland-cursor')
|
||||
|
||||
libavutil = dependency('libavutil')
|
||||
libavcodec = dependency('libavcodec')
|
||||
libavformat = dependency('libavformat')
|
||||
|
||||
executable('simple', 'simple.c', dependencies: wlroots)
|
||||
executable('pointer', 'pointer.c', dependencies: wlroots)
|
||||
executable('touch', 'touch.c', 'cat.c', dependencies: wlroots)
|
||||
|
|
@ -38,3 +42,9 @@ executable(
|
|||
'input-inhibitor.c',
|
||||
dependencies: [wayland_cursor, wayland_client, wlr_protos, wlroots]
|
||||
)
|
||||
|
||||
executable(
|
||||
'dmabuf-capture',
|
||||
'dmabuf-capture.c',
|
||||
dependencies: [wayland_client, wlr_protos, libavutil, libavcodec, libavformat]
|
||||
)
|
||||
|
|
|
|||
|
|
@ -50,6 +50,7 @@ client_protocols = [
|
|||
[wl_protocol_dir, 'unstable/idle-inhibit/idle-inhibit-unstable-v1.xml'],
|
||||
'idle.xml',
|
||||
'screenshooter.xml',
|
||||
'wlr-export-dmabuf-unstable-v1.xml',
|
||||
'wlr-layer-shell-unstable-v1.xml',
|
||||
'wlr-input-inhibitor-unstable-v1.xml',
|
||||
]
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue