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gl-renderer: Validate SHM stride in common output capture path 

SHM buffer stride validation is duplicated in sync and async output
capture paths. Move it into a common path to avoid duplication.

Signed-off-by: Loïc Molinari <loic.molinari@collabora.com>
This commit is contained in:
Loïc Molinari 2023-11-28 18:17:31 +01:00 committed by Derek Foreman
parent b9be532b27
commit f1f921b8cf
1 changed files with 9 additions and 18 deletions
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27
libweston/renderer-gl/gl-renderer.c
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@ -776,22 +776,15 @@ gl_renderer_do_capture(struct gl_renderer *gr, struct weston_buffer *into,
{
struct wl_shm_buffer *shm = into->shm_buffer;
const struct pixel_format_info *fmt = into->pixel_format;
void *shm_pixels;
int32_t stride;
bool ret;
assert(into->type == WESTON_BUFFER_SHM);
assert(shm);
shm_pixels = wl_shm_buffer_get_data(shm);
stride = wl_shm_buffer_get_stride(shm);
if (stride % 4 != 0)
return false;
wl_shm_buffer_begin_access(shm);
ret = gl_renderer_do_read_pixels(gr, fmt, shm_pixels, stride, rect);
ret = gl_renderer_do_read_pixels(gr, fmt, wl_shm_buffer_get_data(shm),
wl_shm_buffer_get_stride(shm), rect);
wl_shm_buffer_end_access(shm);
@ -841,7 +834,7 @@ async_capture_handler(void *data)
return 0;
}
static bool
static void
gl_renderer_do_read_pixels_async(struct gl_renderer *gr,
struct weston_output *output,
struct weston_capture_task *task,
@ -856,13 +849,9 @@ gl_renderer_do_read_pixels_async(struct gl_renderer *gr,
assert(gr->has_pbo);
assert(output->current_mode->refresh > 0);
assert(buffer->type == WESTON_BUFFER_SHM);
assert(buffer->shm_buffer);
assert(fmt->gl_type != 0);
assert(fmt->gl_format != 0);
if (wl_shm_buffer_get_stride(buffer->shm_buffer) % 4 != 0)
return false;
glPixelStorei(GL_PACK_ALIGNMENT, 4);
if (gr->has_pack_reverse)
glPixelStorei(GL_PACK_REVERSE_ROW_ORDER_ANGLE, GL_TRUE);
@ -892,8 +881,6 @@ gl_renderer_do_read_pixels_async(struct gl_renderer *gr,
wl_event_source_timer_update(gl_task->source, 5 * refresh_msec);
wl_list_insert(&gr->pending_capture_list, &gl_task->link);
return true;
}
static void
@ -939,9 +926,13 @@ gl_renderer_do_capture_tasks(struct gl_renderer *gr,
continue;
}
if (wl_shm_buffer_get_stride(buffer->shm_buffer) % 4 != 0) {
weston_capture_task_retire_failed(ct, "GL: buffer stride not multiple of 4");
continue;
}
if (gr->has_pbo) {
if (!gl_renderer_do_read_pixels_async(gr, output, ct, &rect))
weston_capture_task_retire_failed(ct, "GL: capture failed");
gl_renderer_do_read_pixels_async(gr, output, ct, &rect);
continue;
}