+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "protocol.h"
-
-SR_PRIV unsigned int get_memory_size(int type)
-{
- if (type == MEMORY_SIZE_8K)
- return 8 * 1024;
- else if (type <= MEMORY_SIZE_8M)
- return (32 * 1024) << type;
- else
- return 0;
-}
-
-SR_PRIV int clz(unsigned int x)
-{
- int n = 0;
- if (x == 0)
- return 32;
- if (!(x & 0xFFFF0000)) {
- n = n + 16;
- x = x << 16;
- }
- if (!(x & 0xFF000000)) {
- n = n + 8;
- x = x << 8;
- }
- if (!(x & 0xF0000000)) {
- n = n + 4;
- x = x << 4;
- }
- if (!(x & 0xC0000000)) {
- n = n + 2;
- x = x << 2;
- }
- if (!(x & 0x80000000))
- n = n + 1;
- return n;
-}
-
-SR_PRIV int set_limit_samples(struct dev_context *devc, uint64_t samples)
-{
- if (samples > devc->max_sample_depth)
- samples = devc->max_sample_depth;
-
- devc->limit_samples = samples;
-
- if (samples <= 2 * 1024)
- devc->memory_size = MEMORY_SIZE_8K;
- else if (samples <= 16 * 1024)
- devc->memory_size = MEMORY_SIZE_64K;
- else
- devc->memory_size = 19 - clz(samples - 1);
-
- sr_info("Setting memory size to %dK.",
- get_memory_size(devc->memory_size) / 1024);
-
- analyzer_set_memory_size(devc->memory_size);
-
- return SR_OK;
-}
-
-SR_PRIV int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
-{
- if (ratio > 100) {
- sr_err("Invalid capture ratio: %" PRIu64 ".", ratio);
- return SR_ERR_ARG;
- }
-
- devc->capture_ratio = ratio;
-
- sr_info("Setting capture ratio to %d%%.", devc->capture_ratio);
-
- return SR_OK;
-}
-
-SR_PRIV void set_triggerbar(struct dev_context *devc)
-{
- unsigned int trigger_depth, triggerbar, ramsize_trigger;
-
- trigger_depth = get_memory_size(devc->memory_size) / 4;
- if (devc->limit_samples < trigger_depth)
- trigger_depth = devc->limit_samples;
- triggerbar = trigger_depth * devc->capture_ratio / 100;
-
- ramsize_trigger = trigger_depth - triggerbar;
- /* Matches USB packet captures from official app/driver */
- if (triggerbar > 2)
- triggerbar -= 2;
- else {
- ramsize_trigger -= 1;
- triggerbar = 0;
- }
-
- analyzer_set_triggerbar_address(triggerbar);
- analyzer_set_ramsize_trigger_address(ramsize_trigger);
-
- sr_dbg("triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
- sr_dbg("ramsize_triggerbar_address = %d(0x%x)",
- ramsize_trigger, ramsize_trigger);
-}