Changeset 2937:1cca3e1fa89c in roaraudio for libroardsp

Timestamp:

10/16/09 22:34:18 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added roar_amp_pcm*()

File:

• libroardsp/amp.c (modified) (2 diffs)

libroardsp/amp.c

@@ -2 +2 @@
 
 /*
- *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009
+ *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009
  *
  *  This file is part of libroardsp a part of RoarAudio,
@@ -25 +25 @@
 #include "libroardsp.h"
 
+int roar_amp_pcm(void * output, int bits, void * input, int samples, int channels, struct roar_mixer_settings * set) {
+ switch (bits) {
+  case  8: return roar_amp_pcm_8bit (output, input, samples, channels, set); break;
+  case 16: return roar_amp_pcm_16bit(output, input, samples, channels, set); break;
+  case 24: return roar_amp_pcm_24bit(output, input, samples, channels, set); break;
+  case 32: return roar_amp_pcm_32bit(output, input, samples, channels, set); break;
+  default: return -1;
+ }
+}
+
+int roar_amp_pcm_8bit  (int8_t  * output, int8_t  * input, int samples, int channels, struct roar_mixer_settings * set) {
+ int    i;
+ register int s;
+
+ if ( !(input && output) )
+  return -1;
+
+ if (set->rpg_mul == set->rpg_div) {
+  for (i = 0; i < samples; i++) {
+   s  = input[i];
+   s *= set->mixer[i % channels];
+   s /= set->scale;
+   output[i] = s;
+  }
+ } else {
+  for (i = 0; i < samples; i++) {
+   s  = input[i];
+   s *= (set->mixer[i % channels] * set->rpg_mul) / set->rpg_div;
+   s /= set->scale;
+   output[i] = s;
+  }
+ }
+
+ return 0;
+}
+
+int roar_amp_pcm_16bit (int16_t * output, int16_t * input, int samples, int channels, struct roar_mixer_settings * set) {
+ int       i;
+ register int s;
+
+ if ( !(input && output) )
+  return -1;
+
+ if (set->rpg_mul == set->rpg_div) {
+  for (i = 0; i < samples; i++) {
+   s  = input[i];
+   s *= set->mixer[i % channels];
+   s /= set->scale;
+   output[i] = s;
+  }
+ } else {
+  for (i = 0; i < samples; i++) {
+   s  = input[i];
+   s *= (set->mixer[i % channels] * set->rpg_mul) / set->rpg_div;
+   s /= set->scale;
+   output[i] = s;
+  }
+ }
+
+ return 0;
+}
+
+int roar_amp_pcm_24bit (void    * output, void    * input, int samples, int channels, struct roar_mixer_settings * set) {
+ return -1;
+}
+
+int roar_amp_pcm_32bit (int32_t * output, int32_t * input, int samples, int channels, struct roar_mixer_settings * set) {
+#ifdef ROAR_NATIVE_INT64
+ int       i;
+ ROAR_NATIVE_INT64 s;
+
+ if ( !(input && output) )
+  return -1;
+
+ if (set->rpg_mul == set->rpg_div) {
+  for (i = 0; i < samples; i++) {
+   s  = input[i];
+   s *= set->mixer[i % channels];
+   s /= set->scale;
+   output[i] = s;
+  }
+ } else {
+  for (i = 0; i < samples; i++) {
+   s  = input[i];
+   s *= (set->mixer[i % channels] * set->rpg_mul) / set->rpg_div;
+   s /= set->scale;
+   output[i] = s;
+  }
+ }
+
+ return 0;
+#else
+ return -1;
+#endif
+}
 
 //ll