1 files changed, 0 insertions, 136 deletions
diff --git a/cras/src/server/cras_ramp.c b/cras/src/server/cras_ramp.c
deleted file mode 100644
index f0272047..00000000
--- a/cras/src/server/cras_ramp.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/* Copyright 2016 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <syslog.h>
-
-#include "cras_ramp.h"
-
-/*
- * Struct to hold ramping information.
- * Members:
- *   state: Current state. One of CRAS_RAMP_STATE.
- *   ramped_frames: Number of frames that have passed after starting ramping.
- *   duration_frames: The targeted number of frames for whole ramping duration.
- *   increment: The scaler increment that should be added to scaler for
- *              every frame.
- *   start_scaler: The initial scaler.
- *   cb: Callback function to call after ramping is done.
- *   cb_data: Data passed to cb.
- */
-struct cras_ramp {
-	int active;
-	int ramped_frames;
-	int duration_frames;
-	float increment;
-	float start_scaler;
-	float target;
-	void (*cb)(void *data);
-	void *cb_data;
-};
-
-void cras_ramp_destroy(struct cras_ramp *ramp)
-{
-	free(ramp);
-}
-
-struct cras_ramp *cras_ramp_create()
-{
-	struct cras_ramp *ramp;
-	ramp = (struct cras_ramp *)malloc(sizeof(*ramp));
-	if (ramp == NULL) {
-		return NULL;
-	}
-	cras_ramp_reset(ramp);
-	return ramp;
-}
-
-int cras_ramp_reset(struct cras_ramp *ramp)
-{
-	ramp->active = 0;
-	ramp->ramped_frames = 0;
-	ramp->duration_frames = 0;
-	ramp->increment = 0;
-	ramp->start_scaler = 1.0;
-	ramp->target = 1.0;
-	return 0;
-}
-
-int cras_ramp_start(struct cras_ramp *ramp, int mute_ramp, float from, float to,
-		    int duration_frames, cras_ramp_cb cb, void *cb_data)
-{
-	struct cras_ramp_action action;
-
-	if (!ramp)
-		return -EINVAL;
-
-	/* if from == to == 0 means we want to mute for duration_frames */
-	if (from == to && from != 0)
-		return 0;
-
-	/* Get current scaler position so it can serve as new start scaler. */
-	action = cras_ramp_get_current_action(ramp);
-	if (action.type == CRAS_RAMP_ACTION_INVALID)
-		return -EINVAL;
-
-	/* Set initial scaler to current scaler so ramping up/down can be
-         * smoothly switched. */
-	ramp->active = 1;
-	if (action.type == CRAS_RAMP_ACTION_NONE) {
-		ramp->start_scaler = from;
-	} else {
-		/* If this a mute ramp, we want to match the previous multiplier
-		 * so that there is not a jump in the audio. Otherwise, we are
-		 * applying a volume ramp so we need to multiply |from| by the
-		 * previous scaler so that we can stack volume ramps. */
-		ramp->start_scaler = action.scaler;
-		if (!mute_ramp)
-			ramp->start_scaler *= from;
-	}
-	ramp->increment = (to - ramp->start_scaler) / duration_frames;
-	ramp->target = to;
-	ramp->ramped_frames = 0;
-	ramp->duration_frames = duration_frames;
-	ramp->cb = cb;
-	ramp->cb_data = cb_data;
-	return 0;
-}
-
-struct cras_ramp_action
-cras_ramp_get_current_action(const struct cras_ramp *ramp)
-{
-	struct cras_ramp_action action;
-
-	if (ramp->ramped_frames < 0) {
-		action.type = CRAS_RAMP_ACTION_INVALID;
-		action.scaler = 1.0;
-		action.increment = 0.0;
-		action.target = 1.0;
-	} else if (ramp->active) {
-		action.type = CRAS_RAMP_ACTION_PARTIAL;
-		action.scaler = ramp->start_scaler +
-				ramp->ramped_frames * ramp->increment;
-		action.increment = ramp->increment;
-		action.target = ramp->target;
-	} else {
-		action.type = CRAS_RAMP_ACTION_NONE;
-		action.scaler = 1.0;
-		action.increment = 0.0;
-		action.target = 1.0;
-	}
-	return action;
-}
-
-int cras_ramp_update_ramped_frames(struct cras_ramp *ramp, int num_frames)
-{
-	if (!ramp->active)
-		return -EINVAL;
-	ramp->ramped_frames += num_frames;
-	if (ramp->ramped_frames >= ramp->duration_frames) {
-		ramp->active = 0;
-		if (ramp->cb)
-			ramp->cb(ramp->cb_data);
-	}
-	return 0;
-}