static int SetupWindowSubtitleSurface(vout_display_sys_t *sys)
{
int err;
jobject jsurf = jni_LockAndGetSubtitlesSurface();
err = AndroidWindow_SetSurface(sys, sys->p_sub_window, jsurf);
jni_UnlockAndroidSurface();
err = err == 0 ? AndroidWindow_Setup(sys, sys->p_sub_window, 1) : err;
return err;
}
static void DisplaySubpicture(vout_display_t *vd, subpicture_t *subpicture)
{
vout_display_sys_t *sys = vd->sys;
struct md5_s hash;
InitMD5(&hash);
if (subpicture) {
for (subpicture_region_t *r = subpicture->p_region; r != NULL; r = r->p_next) {
AddMD5(&hash, &r->i_x, sizeof(r->i_x));
AddMD5(&hash, &r->i_y, sizeof(r->i_y));
AddMD5(&hash, &r->fmt.i_visible_width, sizeof(r->fmt.i_visible_width));
AddMD5(&hash, &r->fmt.i_visible_height, sizeof(r->fmt.i_visible_height));
AddMD5(&hash, &r->fmt.i_x_offset, sizeof(r->fmt.i_x_offset));
AddMD5(&hash, &r->fmt.i_y_offset, sizeof(r->fmt.i_y_offset));
const int pixels_offset = r->fmt.i_y_offset * r->p_picture->p->i_pitch +
r->fmt.i_x_offset * r->p_picture->p->i_pixel_pitch;
for (int y = 0; y < r->fmt.i_visible_height; y++)
AddMD5(&hash, &r->p_picture->p->p_pixels[pixels_offset + y*r->p_picture->p->i_pitch], r->fmt.i_visible_width);
}
}
EndMD5(&hash);
if (!memcmp(hash.buf, sys->hash, 16))
return;
memcpy(sys->hash, hash.buf, 16);
jobject jsurf = jni_LockAndGetSubtitlesSurface();
if (sys->window && jsurf != sys->jsurf)
{
sys->native_window.winRelease(sys->window);
sys->window = NULL;
}
sys->jsurf = jsurf;
if (!sys->window)
{
JNIEnv *p_env;
jni_attach_thread(&p_env, THREAD_NAME);
sys->window = sys->native_window.winFromSurface(p_env, jsurf);
jni_detach_thread();
}
ANativeWindow_Buffer buf = { 0 };
int32_t err = sys->native_window.winLock(sys->window, &buf, NULL);
if (err) {
jni_UnlockAndroidSurface();
return;
}
if (buf.width >= sys->fmt.i_width && buf.height >= sys->fmt.i_height)
{
/* Wrap the NativeWindow corresponding to the subtitles surface in a picture_t */
picture_t *picture = sys->subtitles_picture;
picture->p[0].p_pixels = (uint8_t*)buf.bits;
picture->p[0].i_lines = buf.height;
picture->p[0].i_pitch = picture->p[0].i_pixel_pitch * buf.stride;
/* Clear the subtitles surface. */
memset(picture->p[0].p_pixels, 0, picture->p[0].i_pitch * picture->p[0].i_lines);
if (subpicture)
{
/* Allocate a blending filter if needed. */
if (unlikely(!sys->p_spu_blend))
sys->p_spu_blend = filter_NewBlend(VLC_OBJECT(vd), &picture->format);
picture_BlendSubpicture(picture, sys->p_spu_blend, subpicture);
}
}
sys->native_window.unlockAndPost(sys->window);
jni_UnlockAndroidSurface();
}