Camerad: small cleanup (commaai#24992)

* remove CameraExpInfo

* remove release callback

Author: deanlee

system/camerad/cameras/camera_common.cc

@@ -88,11 +88,10 @@ class Debayer {
   bool hdr_;
 };
 
-void CameraBuf::init(cl_device_id device_id, cl_context context, CameraState *s, VisionIpcServer * v, int frame_cnt, VisionStreamType init_rgb_type, VisionStreamType init_yuv_type, release_cb init_release_callback) {
+void CameraBuf::init(cl_device_id device_id, cl_context context, CameraState *s, VisionIpcServer * v, int frame_cnt, VisionStreamType init_rgb_type, VisionStreamType init_yuv_type) {
   vipc_server = v;
   this->rgb_type = init_rgb_type;
   this->yuv_type = init_yuv_type;
-  this->release_callback = init_release_callback;
 
   const CameraInfo *ci = &s->ci;
   camera_state = s;
@@ -204,9 +203,7 @@ bool CameraBuf::acquire() {
 }
 
 void CameraBuf::release() {
-  if (release_callback) {
-    release_callback((void*)camera_state, cur_buf_idx);
-  }
+  // Empty
 }
 
 void CameraBuf::queue(size_t buf_idx) {

system/camerad/cameras/camera_common.h

@@ -49,8 +49,6 @@ const bool env_disable_driver = getenv("DISABLE_DRIVER") != NULL;
 const bool env_debug_frames = getenv("DEBUG_FRAMES") != NULL;
 const bool env_log_raw_frames = getenv("LOG_RAW_FRAMES") != NULL;
 
-typedef void (*release_cb)(void *cookie, int buf_idx);
-
 typedef struct CameraInfo {
   uint32_t frame_width, frame_height;
   uint32_t frame_stride;
@@ -86,11 +84,6 @@ typedef struct FrameMetadata {
   float processing_time;
 } FrameMetadata;
 
-typedef struct CameraExpInfo {
-  int op_id;
-  float grey_frac;
-} CameraExpInfo;
-
 struct MultiCameraState;
 struct CameraState;
 class Debayer;
@@ -109,7 +102,6 @@ class CameraBuf {
   SafeQueue<int> safe_queue;
 
   int frame_buf_count;
-  release_cb release_callback;
 
 public:
   cl_command_queue q;
@@ -125,7 +117,7 @@ class CameraBuf {
 
   CameraBuf() = default;
   ~CameraBuf();
-  void init(cl_device_id device_id, cl_context context, CameraState *s, VisionIpcServer * v, int frame_cnt, VisionStreamType rgb_type, VisionStreamType yuv_type, release_cb release_callback=nullptr);
+  void init(cl_device_id device_id, cl_context context, CameraState *s, VisionIpcServer * v, int frame_cnt, VisionStreamType rgb_type, VisionStreamType yuv_type);
   bool acquire();
   void release();
   void queue(size_t buf_idx);