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00021 #include <stdlib.h>
00022 #include <string.h>
00023 #include <glib.h>
00024 #include "sigrok.h"
00025 #include "sigrok-internal.h"
00026 #include "text.h"
00027
00028 SR_PRIV int init_bits(struct sr_output *o)
00029 {
00030 return init(o, DEFAULT_BPL_BITS, MODE_BITS);
00031 }
00032
00033 SR_PRIV int data_bits(struct sr_output *o, const uint8_t *data_in,
00034 uint64_t length_in, uint8_t **data_out,
00035 uint64_t *length_out)
00036 {
00037 struct context *ctx;
00038 unsigned int outsize, offset, p;
00039 int max_linelen;
00040 uint64_t sample;
00041 uint8_t *outbuf, c;
00042
00043 ctx = o->internal;
00044 max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
00045 + ctx->samples_per_line / 8;
00046
00047
00048
00049
00050 outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
00051 * (ctx->num_enabled_probes * max_linelen);
00052
00053 if (!(outbuf = g_try_malloc0(outsize + 1))) {
00054 sr_err("bits out: %s: outbuf malloc failed", __func__);
00055 return SR_ERR_MALLOC;
00056 }
00057
00058 outbuf[0] = '\0';
00059 if (ctx->header) {
00060
00061 strncpy((char *)outbuf, ctx->header, outsize);
00062 g_free(ctx->header);
00063 ctx->header = NULL;
00064
00065
00066 memcpy(&ctx->prevsample, data_in, ctx->unitsize);
00067 ctx->prevsample = ~ctx->prevsample;
00068 }
00069
00070 if (length_in >= ctx->unitsize) {
00071 for (offset = 0; offset <= length_in - ctx->unitsize;
00072 offset += ctx->unitsize) {
00073 memcpy(&sample, data_in + offset, ctx->unitsize);
00074 for (p = 0; p < ctx->num_enabled_probes; p++) {
00075 c = (sample & ((uint64_t) 1 << p)) ? '1' : '0';
00076 ctx->linebuf[p * ctx->linebuf_len +
00077 ctx->line_offset] = c;
00078 }
00079 ctx->line_offset++;
00080 ctx->spl_cnt++;
00081
00082
00083 if ((ctx->spl_cnt & 7) == 0) {
00084 for (p = 0; p < ctx->num_enabled_probes; p++)
00085 ctx->linebuf[p * ctx->linebuf_len +
00086 ctx->line_offset] = ' ';
00087 ctx->line_offset++;
00088 }
00089
00090
00091 if (ctx->spl_cnt >= ctx->samples_per_line) {
00092 flush_linebufs(ctx, outbuf);
00093 ctx->line_offset = ctx->spl_cnt = 0;
00094 ctx->mark_trigger = -1;
00095 }
00096 }
00097 } else {
00098 sr_info("bits out: short buffer (length_in=%" PRIu64 ")",
00099 length_in);
00100 }
00101
00102 *data_out = outbuf;
00103 *length_out = strlen((const char *)outbuf);
00104
00105 return SR_OK;
00106 }
00107
00108 SR_PRIV struct sr_output_format output_text_bits = {
00109 .id = "bits",
00110 .description = "Bits",
00111 .df_type = SR_DF_LOGIC,
00112 .init = init_bits,
00113 .data = data_bits,
00114 .event = event,
00115 };