X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=output%2Foutput_text.c;h=6c2901ae086a9850ab6a54ae20c98c0f847457f7;hb=921a4c741fee27ee2f248971f9ee309a1551f981;hp=3c3fbb5046229120607520c19a9d3928c0b49345;hpb=655756e01d929607f67a9d576222917c72513b4b;p=libsigrok.git

diff --git a/output/output_text.c b/output/output_text.c
index 3c3fbb50..6c2901ae 100644
--- a/output/output_text.c
+++ b/output/output_text.c
@@ -2,6 +2,7 @@
  * This file is part of the sigrok project.
  *
  * Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2011 HÃ¥vard Espeland <gus@ping.uio.no>
  *
  * 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
@@ -25,7 +26,14 @@
 #include "config.h"
 
 #define DEFAULT_BPL_BITS 64
-#define DEFAULT_BPL_HEX  256
+#define DEFAULT_BPL_HEX  192
+#define DEFAULT_BPL_ASCII 74
+
+enum outputmode {
+	MODE_BITS = 1,
+	MODE_HEX,
+	MODE_ASCII,
+};
 
 struct context {
 	unsigned int num_enabled_probes;
@@ -39,6 +47,8 @@ struct context {
 	uint8_t *linevalues;
 	char *header;
 	int mark_trigger;
+	uint64_t prevsample;
+	enum outputmode mode;
 };
 
 static void flush_linebufs(struct context *ctx, char *outbuf)
@@ -65,13 +75,20 @@ static void flush_linebufs(struct context *ctx, char *outbuf)
 
 	/* Mark trigger with a ^ character. */
 	if (ctx->mark_trigger != -1)
+	{
+		int space_offset = ctx->mark_trigger / 8;
+
+		if (ctx->mode == MODE_ASCII)
+			space_offset = 0;
+
 		sprintf(outbuf + strlen(outbuf), "T:%*s^\n",
-			ctx->mark_trigger + (ctx->mark_trigger / 8), "");
+			ctx->mark_trigger + space_offset, "");
+	}
 
 	memset(ctx->linebuf, 0, i * ctx->linebuf_len);
 }
 
-static int init(struct output *o, int default_spl)
+static int init(struct output *o, int default_spl, enum outputmode mode)
 {
 	struct context *ctx;
 	struct probe *probe;
@@ -98,6 +115,7 @@ static int init(struct output *o, int default_spl)
 	ctx->line_offset = 0;
 	ctx->spl_cnt = 0;
 	ctx->mark_trigger = -1;
+	ctx->mode = mode;
 
 	if (o->param && o->param[0]) {
 		ctx->samples_per_line = strtoul(o->param, NULL, 10);
@@ -112,8 +130,8 @@ static int init(struct output *o, int default_spl)
 	}
 
 	snprintf(ctx->header, 511, "%s\n", PACKAGE_STRING);
+	num_probes = g_slist_length(o->device->probes);
 	if (o->device->plugin) {
-		num_probes = g_slist_length(o->device->probes);
 		samplerate = *((uint64_t *) o->device->plugin->get_device_info(
 				o->device->plugin_index, DI_CUR_SAMPLERATE));
 		if (!(samplerate_s = sigrok_samplerate_string(samplerate))) {
@@ -154,6 +172,8 @@ static int event(struct output *o, int event_type, char **data_out,
 	switch (event_type) {
 	case DF_TRIGGER:
 		ctx->mark_trigger = ctx->spl_cnt;
+		*data_out = NULL;
+		*length_out = 0;
 		break;
 	case DF_END:
 		outsize = ctx->num_enabled_probes
@@ -166,6 +186,10 @@ static int event(struct output *o, int event_type, char **data_out,
 		free(o->internal);
 		o->internal = NULL;
 		break;
+	default:
+		*data_out = NULL;
+		*length_out = 0;
+		break;
 	}
 
 	return SIGROK_OK;
@@ -173,7 +197,7 @@ static int event(struct output *o, int event_type, char **data_out,
 
 static int init_bits(struct output *o)
 {
-	return init(o, DEFAULT_BPL_BITS);
+	return init(o, DEFAULT_BPL_BITS, MODE_BITS);
 }
 
 static int data_bits(struct output *o, char *data_in, uint64_t length_in,
@@ -188,8 +212,12 @@ static int data_bits(struct output *o, char *data_in, uint64_t length_in,
 	ctx = o->internal;
 	max_linelen = MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
 			+ ctx->samples_per_line / 8;
-	outsize = length_in / ctx->unitsize * ctx->num_enabled_probes
-			/ ctx->samples_per_line * max_linelen + 512;
+        /*
+         * Calculate space needed for probes. Set aside 512 bytes for
+         * extra output, e.g. trigger.
+         */
+	outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
+            * (ctx->num_enabled_probes * max_linelen);
 
 	if (!(outbuf = calloc(1, outsize + 1)))
 		return SIGROK_ERR_MALLOC;
@@ -200,6 +228,10 @@ static int data_bits(struct output *o, char *data_in, uint64_t length_in,
 		strncpy(outbuf, ctx->header, outsize);
 		free(ctx->header);
 		ctx->header = NULL;
+
+		/* Ensure first transition. */
+		memcpy(&ctx->prevsample, data_in, ctx->unitsize);
+		ctx->prevsample = ~ctx->prevsample;
 	}
 
 	if (length_in >= ctx->unitsize) {
@@ -241,7 +273,7 @@ static int data_bits(struct output *o, char *data_in, uint64_t length_in,
 
 static int init_hex(struct output *o)
 {
-	return init(o, DEFAULT_BPL_BITS);
+	return init(o, DEFAULT_BPL_HEX, MODE_HEX);
 }
 
 static int data_hex(struct output *o, char *data_in, uint64_t length_in,
@@ -304,6 +336,96 @@ static int data_hex(struct output *o, char *data_in, uint64_t length_in,
 	return SIGROK_OK;
 }
 
+static int init_ascii(struct output *o)
+{
+	return init(o, DEFAULT_BPL_ASCII, MODE_ASCII);
+}
+
+static int data_ascii(struct output *o, char *data_in, uint64_t length_in,
+		     char **data_out, uint64_t *length_out)
+{
+	struct context *ctx;
+	unsigned int outsize, offset, p;
+	int max_linelen;
+	uint64_t sample;
+	char *outbuf;
+
+	ctx = o->internal;
+	max_linelen = MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
+			+ ctx->samples_per_line / 8;
+        /*
+         * Calculate space needed for probes. Set aside 512 bytes for
+         * extra output, e.g. trigger.
+         */
+	outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
+            * (ctx->num_enabled_probes * max_linelen);
+
+	if (!(outbuf = calloc(1, outsize + 1)))
+		return SIGROK_ERR_MALLOC;
+
+	outbuf[0] = '\0';
+	if (ctx->header) {
+		/* The header is still here, this must be the first packet. */
+		strncpy(outbuf, ctx->header, outsize);
+		free(ctx->header);
+		ctx->header = NULL;
+	}
+
+	if (length_in >= ctx->unitsize) {
+		for (offset = 0; offset <= length_in - ctx->unitsize;
+		     offset += ctx->unitsize) {
+			memcpy(&sample, data_in + offset, ctx->unitsize);
+
+			char tmpval[ctx->num_enabled_probes];
+
+			for (p = 0; p < ctx->num_enabled_probes; p++) {
+				uint64_t curbit = (sample & ((uint64_t) 1 << p));
+				uint64_t prevbit = (ctx->prevsample &
+						((uint64_t) 1 << p));
+
+				if (curbit < prevbit && ctx->line_offset > 0) {
+					ctx->linebuf[p * ctx->linebuf_len +
+						ctx->line_offset-1] = '\\';
+				}
+
+				if (curbit > prevbit) {
+					tmpval[p] = '/';
+				} else {
+					if (curbit)
+						tmpval[p] = '"';
+					else
+						tmpval[p] = '.';
+				}
+			}
+
+			/* End of line. */
+			if (ctx->spl_cnt >= ctx->samples_per_line) {
+				flush_linebufs(ctx, outbuf);
+				ctx->line_offset = ctx->spl_cnt = 0;
+				ctx->mark_trigger = -1;
+			}
+
+			for (p = 0; p < ctx->num_enabled_probes; p++) {
+				ctx->linebuf[p * ctx->linebuf_len +
+					     ctx->line_offset] = tmpval[p];
+			}
+
+			ctx->line_offset++;
+			ctx->spl_cnt++;
+
+			ctx->prevsample = sample;
+		}
+	} else {
+		g_message("short buffer (length_in=%" PRIu64 ")", length_in);
+	}
+
+	*data_out = outbuf;
+	*length_out = strlen(outbuf);
+
+	return SIGROK_OK;
+}
+
+
 struct output_format output_text_bits = {
 	"bits",
 	"Bits (takes argument, default 64)",
@@ -315,9 +437,18 @@ struct output_format output_text_bits = {
 
 struct output_format output_text_hex = {
 	"hex",
-	"Hexadecimal (takes argument, default 256)",
+	"Hexadecimal (takes argument, default 192)",
 	DF_LOGIC,
 	init_hex,
 	data_hex,
 	event,
 };
+
+struct output_format output_text_ascii = {
+	"ascii",
+	"ASCII (takes argument, default 74)",
+	DF_LOGIC,
+	init_ascii,
+	data_ascii,
+	event,
+};