Add support for desktop portal capture (-w portal)

1 files changed, 620 insertions, 0 deletions

diff --git a/src/pipewire.c b/src/pipewire.c
new file mode 100644
index 0000000..09b7280
--- /dev/null
+++ b/src/pipewire.c
@@ -0,0 +1,620 @@
+#include "../include/pipewire.h"
+#include "../include/egl.h"
+
+#include <pipewire/pipewire.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/debug/types.h>
+
+#include <libdrm/drm_fourcc.h>
+
+#include <fcntl.h>
+
+/* TODO: Make gsr_pipewire_init asynchronous */
+/* TODO: Support 10-bit capture (hdr) when pipewire supports it */
+/* TODO: Support video crop and cursor data (that is not embedded) */
+/* TODO: Test all of the image formats */
+
+#ifndef SPA_POD_PROP_FLAG_DONT_FIXATE
+#define SPA_POD_PROP_FLAG_DONT_FIXATE (1 << 4)
+#endif
+
+#define CURSOR_META_SIZE(width, height)                                    \
+    (sizeof(struct spa_meta_cursor) + sizeof(struct spa_meta_bitmap) + \
+     width * height * 4)
+
+static bool parse_pw_version(gsr_pipewire_data_version *dst, const char *version) {
+    const int n_matches = sscanf(version, "%d.%d.%d", &dst->major, &dst->minor, &dst->micro);
+    return n_matches == 3;
+}
+
+static bool check_pw_version(const gsr_pipewire_data_version *pw_version, int major, int minor, int micro) {
+    if (pw_version->major != major)
+        return pw_version->major > major;
+    if (pw_version->minor != minor)
+        return pw_version->minor > minor;
+    return pw_version->micro >= micro;
+}
+
+static void update_pw_versions(gsr_pipewire *self, const char *version) {
+    fprintf(stderr, "gsr info: pipewire: server version: %s\n", version);
+    fprintf(stderr, "gsr info: pipewire: library version: %s\n", pw_get_library_version());
+    fprintf(stderr, "gsr info: pipewire: header version: %s\n", pw_get_headers_version());
+    if(!parse_pw_version(&self->server_version, version))
+        fprintf(stderr, "gsr error: pipewire: failed to parse server version\n");
+}
+
+static void on_core_info_cb(void *user_data, const struct pw_core_info *info) {
+    gsr_pipewire *self = user_data;
+    update_pw_versions(self, info->version);
+}
+
+static void on_core_error_cb(void *user_data, uint32_t id, int seq, int res, const char *message) {
+    gsr_pipewire *self = user_data;
+    fprintf(stderr, "gsr error: pipewire: error id:%u seq:%d res:%d: %s\n", id, seq, res, message);
+    pw_thread_loop_signal(self->thread_loop, false);
+}
+
+static void on_core_done_cb(void *user_data, uint32_t id, int seq) {
+    gsr_pipewire *self = user_data;
+    if (id == PW_ID_CORE && self->server_version_sync == seq)
+        pw_thread_loop_signal(self->thread_loop, false);
+}
+
+static bool is_cursor_format_supported(const enum spa_video_format format) {
+    switch(format) {
+        case SPA_VIDEO_FORMAT_RGBx: return true;
+        case SPA_VIDEO_FORMAT_BGRx: return true;
+        case SPA_VIDEO_FORMAT_xRGB: return true;
+        case SPA_VIDEO_FORMAT_xBGR: return true;
+        case SPA_VIDEO_FORMAT_RGBA: return true;
+        case SPA_VIDEO_FORMAT_BGRA: return true;
+        case SPA_VIDEO_FORMAT_ARGB: return true;
+        case SPA_VIDEO_FORMAT_ABGR: return true;
+        default:                    break;
+    }
+    return false;
+}
+
+static const struct pw_core_events core_events = {
+    PW_VERSION_CORE_EVENTS,
+    .info = on_core_info_cb,
+    .done = on_core_done_cb,
+    .error = on_core_error_cb,
+};
+
+static void on_process_cb(void *user_data) {
+    gsr_pipewire *self = user_data;
+    struct spa_meta_cursor *cursor = NULL;
+
+    /* Find the most recent buffer */
+    struct pw_buffer *pw_buf = NULL;
+    for(;;) {
+        struct pw_buffer *aux = pw_stream_dequeue_buffer(self->stream);
+        if(!aux)
+            break;
+        if(pw_buf)
+            pw_stream_queue_buffer(self->stream, pw_buf);
+        pw_buf = aux;
+    }
+
+    if(!pw_buf) {
+        fprintf(stderr, "gsr info: pipewire: out of buffers!\n");
+        return;
+    }
+
+    struct spa_buffer *buffer = pw_buf->buffer;
+    const bool has_buffer = buffer->datas[0].chunk->size != 0;
+    if(!has_buffer)
+        goto read_metadata;
+
+    pthread_mutex_lock(&self->mutex);
+
+    if(buffer->datas[0].type == SPA_DATA_DmaBuf) {
+        if(buffer->n_datas > 0) {
+            self->dmabuf_data.fd = buffer->datas[0].fd;
+            self->dmabuf_data.offset = buffer->datas[0].chunk->offset;
+            self->dmabuf_data.stride = buffer->datas[0].chunk->stride;
+        } else {
+            self->dmabuf_data.fd = -1;
+        }
+    } else {
+        // TODO:
+    }
+
+    struct spa_meta_region *region = spa_buffer_find_meta_data(buffer, SPA_META_VideoCrop, sizeof(*region));
+    if(region && spa_meta_region_is_valid(region)) {
+        // fprintf(stderr, "gsr info: pipewire: crop Region available (%dx%d+%d+%d)\n",
+        //      region->region.position.x, region->region.position.y,
+        //      region->region.size.width, region->region.size.height);
+        self->crop.x = region->region.position.x;
+        self->crop.y = region->region.position.y;
+        self->crop.width = region->region.size.width;
+        self->crop.height = region->region.size.height;
+        self->crop.valid = true;
+    } else {
+        self->crop.valid = false;
+    }
+
+    pthread_mutex_unlock(&self->mutex);
+
+read_metadata:
+
+    cursor = spa_buffer_find_meta_data(buffer, SPA_META_Cursor, sizeof(*cursor));
+    self->cursor.valid = cursor && spa_meta_cursor_is_valid(cursor);
+    
+    if (self->cursor.visible && self->cursor.valid) {
+        pthread_mutex_lock(&self->mutex);
+
+        struct spa_meta_bitmap *bitmap = NULL;
+        if (cursor->bitmap_offset)
+            bitmap = SPA_MEMBER(cursor, cursor->bitmap_offset, struct spa_meta_bitmap);
+
+        if (bitmap && bitmap->size.width > 0 && bitmap->size.height && is_cursor_format_supported(bitmap->format)) {
+            const uint8_t *bitmap_data = SPA_MEMBER(bitmap, bitmap->offset, uint8_t);
+            fprintf(stderr, "gsr info: pipewire: cursor bitmap update, size: %dx%d, format: %s\n",
+                (int)bitmap->size.width, (int)bitmap->size.height, spa_debug_type_find_name(spa_type_video_format, bitmap->format));
+
+            const size_t bitmap_size = bitmap->size.width * bitmap->size.height * 4;
+            uint8_t *new_bitmap_data = realloc(self->cursor.data, bitmap_size);
+            if(new_bitmap_data) {
+                self->cursor.data = new_bitmap_data;
+                /* TODO: Convert bgr and other image formats to rgb here */
+                memcpy(self->cursor.data, bitmap_data, bitmap_size);
+            }
+        
+            self->cursor.hotspot_x = cursor->hotspot.x;
+            self->cursor.hotspot_y = cursor->hotspot.y;
+            self->cursor.width = bitmap->size.width;
+            self->cursor.height = bitmap->size.height;
+        }
+
+        self->cursor.x = cursor->position.x;
+        self->cursor.y = cursor->position.y;
+        pthread_mutex_unlock(&self->mutex);
+
+        //fprintf(stderr, "gsr info: pipewire: cursor: %d %d %d %d\n", cursor->hotspot.x, cursor->hotspot.y, cursor->position.x, cursor->position.y);
+    }
+
+    pw_stream_queue_buffer(self->stream, pw_buf);
+}
+
+static void on_param_changed_cb(void *user_data, uint32_t id, const struct spa_pod *param) {
+    gsr_pipewire *self = user_data;
+
+    if (!param || id != SPA_PARAM_Format)
+        return;
+
+    int result = spa_format_parse(param, &self->format.media_type, &self->format.media_subtype);
+    if (result < 0)
+        return;
+
+    if (self->format.media_type != SPA_MEDIA_TYPE_video || self->format.media_subtype != SPA_MEDIA_SUBTYPE_raw)
+        return;
+
+    pthread_mutex_lock(&self->mutex);
+    spa_format_video_raw_parse(param, &self->format.info.raw);
+    pthread_mutex_unlock(&self->mutex);
+
+    uint32_t buffer_types = 0;
+    const bool has_modifier = spa_pod_find_prop(param, NULL, SPA_FORMAT_VIDEO_modifier) != NULL;
+    if(has_modifier || check_pw_version(&self->server_version, 0, 3, 24))
+        buffer_types |= 1 << SPA_DATA_DmaBuf;
+
+    fprintf(stderr, "gsr info: pipewire: negotiated format:\n");
+
+    fprintf(stderr, "gsr info: pipewire:    Format: %d (%s)\n",
+         self->format.info.raw.format,
+         spa_debug_type_find_name(spa_type_video_format, self->format.info.raw.format));
+
+    if(has_modifier) {
+        fprintf(stderr, "gsr info: pipewire:    Modifier: %" PRIu64 "\n", self->format.info.raw.modifier);
+    }
+
+    fprintf(stderr, "gsr info: pipewire:    Size: %dx%d\n", self->format.info.raw.size.width, self->format.info.raw.size.height);
+    fprintf(stderr, "gsr info: pipewire:    Framerate: %d/%d\n", self->format.info.raw.framerate.num, self->format.info.raw.framerate.denom);
+
+    uint8_t params_buffer[1024];
+    struct spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
+    const struct spa_pod *params[3];
+
+    params[0] = spa_pod_builder_add_object(
+		&pod_builder, SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
+		SPA_PARAM_META_type, SPA_POD_Id(SPA_META_VideoCrop),
+		SPA_PARAM_META_size,
+		SPA_POD_Int(sizeof(struct spa_meta_region)));
+
+    params[1] = spa_pod_builder_add_object(
+        &pod_builder, SPA_TYPE_OBJECT_ParamMeta, SPA_PARAM_Meta,
+        SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Cursor),
+        SPA_PARAM_META_size,
+        SPA_POD_CHOICE_RANGE_Int(CURSOR_META_SIZE(64, 64),
+                     CURSOR_META_SIZE(1, 1),
+                     CURSOR_META_SIZE(1024, 1024)));
+
+    params[2] = spa_pod_builder_add_object(
+        &pod_builder, SPA_TYPE_OBJECT_ParamBuffers, SPA_PARAM_Buffers,
+        SPA_PARAM_BUFFERS_dataType, SPA_POD_Int(buffer_types));
+
+    pw_stream_update_params(self->stream, params, 3);
+    self->negotiated = true;
+}
+
+static void on_state_changed_cb(void *user_data, enum pw_stream_state old, enum pw_stream_state state, const char *error) {
+    (void)old;
+    gsr_pipewire *self = user_data;
+    fprintf(stderr, "gsr info: pipewire: stream %p state: \"%s\" (error: %s)\n",
+         (void*)self->stream, pw_stream_state_as_string(state),
+         error ? error : "none");
+}
+
+static const struct pw_stream_events stream_events = {
+    PW_VERSION_STREAM_EVENTS,
+    .state_changed = on_state_changed_cb,
+    .param_changed = on_param_changed_cb,
+    .process = on_process_cb,
+};
+
+static inline struct spa_pod *build_format(struct spa_pod_builder *b,
+                       const gsr_pipewire_video_info *ovi,
+                       uint32_t format, const uint64_t *modifiers,
+                       size_t modifier_count)
+{
+    struct spa_pod_frame format_frame;
+
+    spa_pod_builder_push_object(b, &format_frame, SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat);
+    spa_pod_builder_add(b, SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video), 0);
+    spa_pod_builder_add(b, SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw), 0);
+
+    spa_pod_builder_add(b, SPA_FORMAT_VIDEO_format, SPA_POD_Id(format), 0);
+
+    if (modifier_count > 0) {
+        struct spa_pod_frame modifier_frame;
+
+        spa_pod_builder_prop(b, SPA_FORMAT_VIDEO_modifier, SPA_POD_PROP_FLAG_MANDATORY | SPA_POD_PROP_FLAG_DONT_FIXATE);
+        spa_pod_builder_push_choice(b, &modifier_frame, SPA_CHOICE_Enum, 0);
+
+        /* The first element of choice pods is the preferred value. Here
+         * we arbitrarily pick the first modifier as the preferred one.
+         */
+        // TODO:
+        spa_pod_builder_long(b, modifiers[0]);
+
+        for(uint32_t i = 0; i < modifier_count; i++)
+            spa_pod_builder_long(b, modifiers[i]);
+
+        spa_pod_builder_pop(b, &modifier_frame);
+    }
+
+    spa_pod_builder_add(b, SPA_FORMAT_VIDEO_size,
+                SPA_POD_CHOICE_RANGE_Rectangle(
+                    &SPA_RECTANGLE(32, 32),
+                    &SPA_RECTANGLE(1, 1),
+                    &SPA_RECTANGLE(16384, 16384)),
+                SPA_FORMAT_VIDEO_framerate,
+                SPA_POD_CHOICE_RANGE_Fraction(
+                    &SPA_FRACTION(ovi->fps_num, ovi->fps_den),
+                    &SPA_FRACTION(0, 1), &SPA_FRACTION(500, 1)),
+                0);
+    return spa_pod_builder_pop(b, &format_frame);
+}
+
+#define NUM_FORMATS 10
+
+/* https://gstreamer.freedesktop.org/documentation/additional/design/mediatype-video-raw.html?gi-language=c#formats */
+/* For some reason gstreamer formats are in opposite order to drm formats */
+static int64_t spa_video_format_to_drm_format(const enum spa_video_format format) {
+    switch(format) {
+        case SPA_VIDEO_FORMAT_RGBx: return DRM_FORMAT_XBGR8888;
+        case SPA_VIDEO_FORMAT_BGRx: return DRM_FORMAT_XRGB8888;
+        case SPA_VIDEO_FORMAT_xRGB: return DRM_FORMAT_BGRX8888;
+        case SPA_VIDEO_FORMAT_xBGR: return DRM_FORMAT_RGBX8888;
+        case SPA_VIDEO_FORMAT_RGBA: return DRM_FORMAT_ABGR8888;
+        case SPA_VIDEO_FORMAT_BGRA: return DRM_FORMAT_ARGB8888;
+        case SPA_VIDEO_FORMAT_ARGB: return DRM_FORMAT_BGRA8888;
+        case SPA_VIDEO_FORMAT_ABGR: return DRM_FORMAT_RGBA8888;
+        case SPA_VIDEO_FORMAT_RGB:  return DRM_FORMAT_XBGR8888;
+        case SPA_VIDEO_FORMAT_BGR:  return DRM_FORMAT_XRGB8888;
+        default:                    break;
+    }
+    return DRM_FORMAT_INVALID;
+}
+
+static bool gsr_pipewire_build_format_params(gsr_pipewire *self, struct spa_pod_builder *pod_builder, struct spa_pod **params) {
+    if(!check_pw_version(&self->server_version, 0, 3, 33))
+        return false;
+
+    const enum spa_video_format formats[] = {
+        SPA_VIDEO_FORMAT_RGBx,
+        SPA_VIDEO_FORMAT_BGRx,
+        SPA_VIDEO_FORMAT_xRGB,
+        SPA_VIDEO_FORMAT_xBGR,
+        SPA_VIDEO_FORMAT_RGBA,
+        SPA_VIDEO_FORMAT_BGRA,
+        SPA_VIDEO_FORMAT_ARGB,
+        SPA_VIDEO_FORMAT_ABGR,
+        SPA_VIDEO_FORMAT_RGB,
+        SPA_VIDEO_FORMAT_BGR,
+    };
+
+    const uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR, DRM_FORMAT_MOD_INVALID };
+
+    for (size_t i = 0; i < NUM_FORMATS; i++) {
+        enum spa_video_format format = formats[i];
+        params[i] = build_format(pod_builder, &self->video_info, format, modifiers, 2);
+    }
+
+    return true;
+}
+
+static void renegotiate_format(void *data, uint64_t expirations) {
+    (void)expirations;
+    gsr_pipewire *self = (gsr_pipewire*)data;
+
+    pw_thread_loop_lock(self->thread_loop);
+
+    struct spa_pod *params[NUM_FORMATS];
+    uint8_t params_buffer[2048];
+    struct spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
+    if (!gsr_pipewire_build_format_params(self, &pod_builder, params)) {
+        pw_thread_loop_unlock(self->thread_loop);
+        return;
+    }
+
+    pw_stream_update_params(self->stream, (const struct spa_pod**)params, NUM_FORMATS);
+    pw_thread_loop_unlock(self->thread_loop);
+}
+
+static bool gsr_pipewire_setup_stream(gsr_pipewire *self) {
+    struct spa_pod *params[NUM_FORMATS];
+    uint8_t params_buffer[2048];
+    struct spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT(params_buffer, sizeof(params_buffer));
+
+    self->thread_loop = pw_thread_loop_new("PipeWire thread loop", NULL);
+    if(!self->thread_loop) {
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to create pipewire thread\n");
+        goto error;
+    }
+
+    self->context = pw_context_new(pw_thread_loop_get_loop(self->thread_loop), NULL, 0);
+    if(!self->context) {
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to create pipewire context\n");
+        goto error;
+    }
+
+    if(pw_thread_loop_start(self->thread_loop) < 0) {
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to start thread\n");
+        goto error;
+    }
+
+    pw_thread_loop_lock(self->thread_loop);
+
+    // TODO: Why pass 5 to fcntl?
+    self->core = pw_context_connect_fd(self->context, fcntl(self->fd, F_DUPFD_CLOEXEC, 5), NULL, 0);
+    if(!self->core) {
+        pw_thread_loop_unlock(self->thread_loop);
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to connect to fd %d\n", self->fd);
+        goto error;
+    }
+
+    // TODO: Error check
+    pw_core_add_listener(self->core, &self->core_listener, &core_events, self);
+
+    // TODO: Cleanup?
+    self->reneg = pw_loop_add_event(pw_thread_loop_get_loop(self->thread_loop), renegotiate_format, self);
+    if(!self->reneg) {
+        pw_thread_loop_unlock(self->thread_loop);
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: pw_loop_add_event failed\n");
+        goto error;
+    }
+
+    self->server_version_sync = pw_core_sync(self->core, PW_ID_CORE, 0);
+    pw_thread_loop_wait(self->thread_loop);
+
+    self->stream = pw_stream_new(self->core, "com.dec05eba.gpu_screen_recorder",
+        pw_properties_new(PW_KEY_MEDIA_TYPE, "Video",
+                          PW_KEY_MEDIA_CATEGORY, "Capture",
+                          PW_KEY_MEDIA_ROLE, "Screen", NULL));
+    if(!self->stream) {
+        pw_thread_loop_unlock(self->thread_loop);
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to create stream\n");
+        goto error;
+    }
+    pw_stream_add_listener(self->stream, &self->stream_listener, &stream_events, self);
+
+    self->video_info.fps_num = 60;
+    self->video_info.fps_den = 1;
+
+    if(!gsr_pipewire_build_format_params(self, &pod_builder, params)) {
+        pw_thread_loop_unlock(self->thread_loop);
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to build format params\n");
+        goto error;
+    }
+
+    if(pw_stream_connect(
+        self->stream, PW_DIRECTION_INPUT, self->node,
+        PW_STREAM_FLAG_AUTOCONNECT | PW_STREAM_FLAG_MAP_BUFFERS, (const struct spa_pod**)params,
+        NUM_FORMATS) < 0)
+    {
+        pw_thread_loop_unlock(self->thread_loop);
+        fprintf(stderr, "gsr error: gsr_pipewire_setup_stream: failed to connect stream\n");
+        goto error;
+    }
+
+    pw_thread_loop_unlock(self->thread_loop);
+    return true;
+
+    error:
+    if(self->thread_loop) {
+        //pw_thread_loop_wait(self->thread_loop);
+        pw_thread_loop_stop(self->thread_loop);
+    }
+
+    if(self->stream) {
+        pw_stream_disconnect(self->stream);
+        pw_stream_destroy(self->stream);
+        self->stream = NULL;
+    }
+
+    if(self->core) {
+        pw_core_disconnect(self->core);
+        self->core = NULL;
+    }
+
+    if(self->context) {
+        pw_context_destroy(self->context);
+        self->context = NULL;
+    }
+
+    if(self->thread_loop) {
+        pw_thread_loop_destroy(self->thread_loop);
+        self->thread_loop = NULL;
+    }
+    return false;
+}
+
+static int pw_init_counter = 0;
+bool gsr_pipewire_init(gsr_pipewire *self, int pipewire_fd, uint32_t pipewire_node, int fps, bool capture_cursor, gsr_egl *egl) {
+    if(pw_init_counter == 0)
+        pw_init(NULL, NULL);
+    ++pw_init_counter;
+
+    memset(self, 0, sizeof(*self));
+    self->egl = egl;
+    self->fd = pipewire_fd;
+    self->node = pipewire_node;
+    if(pthread_mutex_init(&self->mutex, NULL) != 0) {
+        fprintf(stderr, "gsr error: gsr_pipewire_init: failed to initialize mutex\n");
+        gsr_pipewire_deinit(self);
+        return false;
+    }
+    self->mutex_initialized = true;
+    self->video_info.fps_num = fps;
+    self->video_info.fps_den = 1;
+    self->cursor.visible = capture_cursor;
+    
+    if(!gsr_pipewire_setup_stream(self)) {
+        gsr_pipewire_deinit(self);
+        return false;
+    }
+
+    return true;
+}
+
+void gsr_pipewire_deinit(gsr_pipewire *self) {
+    if(self->thread_loop) {
+        //pw_thread_loop_wait(self->thread_loop);
+        pw_thread_loop_stop(self->thread_loop);
+    }
+
+    if(self->stream) {
+        pw_stream_disconnect(self->stream);
+        pw_stream_destroy(self->stream);
+        self->stream = NULL;
+    }
+
+    if(self->core) {
+        pw_core_disconnect(self->core);
+        self->core = NULL;
+    }
+
+    if(self->context) {
+        pw_context_destroy(self->context);
+        self->context = NULL;
+    }
+
+    if(self->thread_loop) {
+        pw_thread_loop_destroy(self->thread_loop);
+        self->thread_loop = NULL;
+    }
+
+    if(self->fd > 0) {
+        close(self->fd);
+        self->fd = 0;
+    }
+
+    self->negotiated = false;
+
+    if(self->mutex_initialized) {
+        pthread_mutex_destroy(&self->mutex);
+        self->mutex_initialized = false;
+    }
+
+    if(self->cursor.data) {
+        free(self->cursor.data);
+        self->cursor.data = NULL;
+    }
+
+    --pw_init_counter;
+    if(pw_init_counter == 0) {
+#if PW_CHECK_VERSION(0, 3, 49)
+        pw_deinit();
+#endif
+    }
+}
+
+/* TODO: Do this in the thread instead, otherwise this is not guaranteed to always work and may produce glitched output */
+bool gsr_pipewire_map_texture(gsr_pipewire *self, unsigned int texture_id, unsigned int cursor_texture_id, gsr_pipewire_region *region, gsr_pipewire_region *cursor_region) {
+    pthread_mutex_lock(&self->mutex);
+
+    if(!self->negotiated || self->dmabuf_data.fd <= 0) {
+        pthread_mutex_unlock(&self->mutex);
+        return false;
+    }
+
+    /* TODO: Support multiple planes */
+    const intptr_t img_attr[] = {
+        EGL_LINUX_DRM_FOURCC_EXT,           spa_video_format_to_drm_format(self->format.info.raw.format),
+        EGL_WIDTH,                          self->format.info.raw.size.width,
+        EGL_HEIGHT,                         self->format.info.raw.size.height,
+        EGL_DMA_BUF_PLANE0_FD_EXT,          self->dmabuf_data.fd,
+        EGL_DMA_BUF_PLANE0_OFFSET_EXT,      self->dmabuf_data.offset,
+        EGL_DMA_BUF_PLANE0_PITCH_EXT,       self->dmabuf_data.stride,
+        EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT, self->format.info.raw.modifier & 0xFFFFFFFFULL,
+        EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, self->format.info.raw.modifier >> 32ULL,
+        EGL_NONE
+    };
+
+    EGLImage image = self->egl->eglCreateImage(self->egl->egl_display, 0, EGL_LINUX_DMA_BUF_EXT, NULL, img_attr);
+    self->egl->glBindTexture(GL_TEXTURE_2D, texture_id);
+    self->egl->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
+    self->egl->eglDestroyImage(self->egl->egl_display, image);
+    self->egl->glBindTexture(GL_TEXTURE_2D, 0);
+
+    if(self->cursor.data) {
+        self->egl->glBindTexture(GL_TEXTURE_2D, cursor_texture_id);
+        // TODO: glTextureSubImage2D if same size
+        self->egl->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, self->cursor.width, self->cursor.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, self->cursor.data);
+        self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        self->egl->glBindTexture(GL_TEXTURE_2D, 0);
+        
+        free(self->cursor.data);
+        self->cursor.data = NULL;
+    }
+
+    region->x = 0;
+    region->y = 0;
+
+    region->width = self->format.info.raw.size.width;
+    region->height = self->format.info.raw.size.height;
+
+    if(self->crop.valid) {
+        region->x = self->crop.x;
+        region->y = self->crop.y;
+
+        region->width = self->crop.width;
+        region->height = self->crop.height;
+    }
+
+    /* TODO: Test if cursor hotspot is correct */
+    cursor_region->x = self->cursor.x - self->cursor.hotspot_x;
+    cursor_region->y = self->cursor.y - self->cursor.hotspot_y;
+
+    cursor_region->width = self->cursor.width;
+    cursor_region->height = self->cursor.height;
+
+    pthread_mutex_unlock(&self->mutex);
+    return true;
+}