From d6ea3dcb91ba8eb0af9b61c4188dca56fecb8ed7 Mon Sep 17 00:00:00 2001
From: Jeongmo Yang <jm80.yang@samsung.com>
Date: Fri, 4 Aug 2023 15:26:02 +0900
Subject: [PATCH] Add new function to get exposure from device

[Version] 0.10.296
[Issue Type] New feature

Change-Id: I367574551a8859f60178c55b43d5581e96c2a30b
Signed-off-by: Jeongmo Yang <jm80.yang@samsung.com>
---
 packaging/libmm-camcorder.spec      |  2 +-
 src/include/mm_camcorder.h          |  3 +++
 src/include/mm_camcorder_internal.h |  3 +++
 src/mm_camcorder.c                  |  7 ++++++
 src/mm_camcorder_internal.c         | 46 +++++++++++++++++++++++++++++++++++++
 5 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/packaging/libmm-camcorder.spec b/packaging/libmm-camcorder.spec
index c2e9124..889495d 100755
--- a/packaging/libmm-camcorder.spec
+++ b/packaging/libmm-camcorder.spec
@@ -1,6 +1,6 @@
 Name:       libmm-camcorder
 Summary:    Camera and recorder library
-Version:    0.10.295
+Version:    0.10.296
 Release:    0
 Group:      Multimedia/Libraries
 License:    Apache-2.0
diff --git a/src/include/mm_camcorder.h b/src/include/mm_camcorder.h
index 961ecbf..a439c65 100644
--- a/src/include/mm_camcorder.h
+++ b/src/include/mm_camcorder.h
@@ -3538,6 +3538,9 @@ int mm_camcorder_get_extra_preview_bitrate(MMHandleType camcorder, int stream_id
 int mm_camcorder_set_extra_preview_gop_interval(MMHandleType camcorder, int stream_id, int interval);
 int mm_camcorder_get_extra_preview_gop_interval(MMHandleType camcorder, int stream_id, int *interval);
 
+/* get exposure */
+int mm_camcorder_get_exposure(MMHandleType camcorder, int *exposure);
+
 /**
 	@}
  */
diff --git a/src/include/mm_camcorder_internal.h b/src/include/mm_camcorder_internal.h
index f9aa9b1..76f98b2 100644
--- a/src/include/mm_camcorder_internal.h
+++ b/src/include/mm_camcorder_internal.h
@@ -1364,6 +1364,9 @@ void _mmcamcorder_emit_signal(MMHandleType handle, const char *object_name,
 /* external storage state management */
 int _mmcamcorder_manage_external_storage_state(MMHandleType handle, int storage_state);
 
+/* get exposure */
+int _mmcamcorder_get_exposure(MMHandleType handle, int *exposure);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/mm_camcorder.c b/src/mm_camcorder.c
index b1ff8c2..226e626 100644
--- a/src/mm_camcorder.c
+++ b/src/mm_camcorder.c
@@ -470,6 +470,13 @@ int mm_camcorder_manage_external_storage_state(MMHandleType camcorder, int stora
 	return _mmcamcorder_manage_external_storage_state(camcorder, storage_state);
 }
 
+int mm_camcorder_get_exposure(MMHandleType camcorder, int *exposure)
+{
+	mmf_return_val_if_fail((void *)camcorder, MM_ERROR_CAMCORDER_INVALID_ARGUMENT);
+
+	return _mmcamcorder_get_exposure(camcorder, exposure);
+}
+
 int mm_camcorder_get_log_level(void)
 {
 	return _mmcamcorder_get_log_level();
diff --git a/src/mm_camcorder_internal.c b/src/mm_camcorder_internal.c
index 15647d2..20b5933 100644
--- a/src/mm_camcorder_internal.c
+++ b/src/mm_camcorder_internal.c
@@ -2281,6 +2281,52 @@ int _mmcamcorder_stop_focusing(MMHandleType handle)
 	}
 }
 
+int _mmcamcorder_get_exposure(MMHandleType handle, int *exposure)
+{
+	int ret = MM_ERROR_NONE;
+	int state = MM_CAMCORDER_STATE_NONE;
+	GstCameraControl *control = NULL;
+	_MMCamcorderSubContext *sc = NULL;
+	mmf_camcorder_t *hcamcorder = MMF_CAMCORDER(handle);
+
+	mmf_return_val_if_fail(hcamcorder, MM_ERROR_CAMCORDER_NOT_INITIALIZED);
+	mmf_return_val_if_fail(exposure, MM_ERROR_CAMCORDER_INVALID_ARGUMENT);
+
+	state = _mmcamcorder_get_state(handle);
+	if (state < MM_CAMCORDER_STATE_READY) {
+		ret = mm_camcorder_get_attributes(handle, NULL,
+			MMCAM_CAMERA_EXPOSURE_VALUE, exposure,
+			NULL);
+
+		MMCAM_LOG_INFO("exposure[%d] from attribute[ret:0x%x]", *exposure, ret);
+
+		return ret;
+	}
+
+	sc = MMF_CAMCORDER_SUBCONTEXT(hcamcorder);
+	mmf_return_val_if_fail(sc, MM_ERROR_CAMCORDER_NOT_INITIALIZED);
+
+	if (!GST_IS_CAMERA_CONTROL(sc->element[_MMCAMCORDER_VIDEOSRC_SRC].gst)) {
+		MMCAM_LOG_ERROR("Can't cast Video source into camera control.");
+		return MM_ERROR_CAMCORDER_NOT_SUPPORTED;
+	}
+
+	control = GST_CAMERA_CONTROL(sc->element[_MMCAMCORDER_VIDEOSRC_SRC].gst);
+	if (!control) {
+		MMCAM_LOG_ERROR("cast CAMERA_CONTROL failed");
+		return MM_ERROR_CAMCORDER_NOT_SUPPORTED;
+	}
+
+	if (!gst_camera_control_get_exposure(control, GST_CAMERA_CONTROL_EXPOSURE_VALUE, exposure, NULL)) {
+		MMCAM_LOG_ERROR("get exposure failed");
+		return MM_ERROR_CAMCORDER_INTERNAL;
+	}
+
+	MMCAM_LOG_INFO("exposure[%d] from device", *exposure);
+
+	return MM_ERROR_NONE;
+}
+
 /*-----------------------------------------------
 |	  CAMCORDER INTERNAL LOCAL		|
 -----------------------------------------------*/
-- 
2.7.4