Changeset 1100:aac17d20aea1 in roaraudio for include/libroardsp/libroardsp.h

Timestamp:

01/02/09 23:18:26 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added DC block with f_e=~5Hz

File:

• include/libroardsp/libroardsp.h (modified) (4 diffs)

include/libroardsp/libroardsp.h

@@ -44 +44 @@
 #define ROARDSP_FILTER_ADD            7
 #define ROARDSP_FILTER_DOWNMIX        8
+#define ROARDSP_FILTER_DCBLOCK        9
 
 // filter CTLs:
@@ -62 +63 @@
 #define ROARDSP_DOWNMIX_ARITHMETIC    3
 #define ROARDSP_DOWNMIX_RMS           4
+
+#define ROARDSP_DCBLOCK_NUMBLOCKS     100
 
 // types:
@@ -96 +99 @@
  int32_t  mul;
  int32_t  div;
+};
+
+struct roardsp_dcblock {
+ int cur;
+ int32_t dc[ROARDSP_DCBLOCK_NUMBLOCKS];
 };
 
@@ -146 +154 @@
 int roardsp_downmix_ctl    (struct roardsp_filter * filter, int cmd, void * data);
 
+int roardsp_dcblock_init   (struct roardsp_filter * filter, struct roar_stream * stream, int id);
+int roardsp_dcblock_uninit (struct roardsp_filter * filter);
+int roardsp_dcblock_calc16 (struct roardsp_filter * filter, void * data, size_t samples);
+
 // codecs:
 int roardsp_conv_alaw2pcm16 (int16_t * out, char * in, size_t len);