diff options
-rw-r--r-- | libaf/af_pan.c | 17 | ||||
-rw-r--r-- | libaf/control.h | 2 |
2 files changed, 19 insertions, 0 deletions
diff --git a/libaf/af_pan.c b/libaf/af_pan.c index 12955897d7..7d25e1afde 100644 --- a/libaf/af_pan.c +++ b/libaf/af_pan.c @@ -111,6 +111,23 @@ static int control(struct af_instance_s* af, int cmd, void* arg) case AF_CONTROL_PAN_NOUT | AF_CONTROL_GET: *(int*)arg = af->data->nch; return AF_OK; + case AF_CONTROL_PAN_BALANCE | AF_CONTROL_SET:{ + float val = *(float*)arg; + if (s->nch) + return AF_ERROR; + if (af->data->nch >= 2) { + s->level[0][0] = min(1.f, 1.f - val); + s->level[0][1] = max(0.f, val); + s->level[1][0] = max(0.f, -val); + s->level[1][1] = min(1.f, 1.f + val); + } + return AF_OK; + } + case AF_CONTROL_PAN_BALANCE | AF_CONTROL_GET: + if (s->nch) + return AF_ERROR; + *(float*)arg = s->level[0][1] - s->level[1][0]; + return AF_OK; } return AF_UNKNOWN; } diff --git a/libaf/control.h b/libaf/control.h index b580a6f7fa..80eff7c584 100644 --- a/libaf/control.h +++ b/libaf/control.h @@ -193,6 +193,8 @@ typedef struct af_control_ext_s{ // Number of outputs from pan, arg is int* #define AF_CONTROL_PAN_NOUT 0x00001B00 | AF_CONTROL_FILTER_SPECIFIC +// Balance, arg is float*; range -1 (left) to 1 (right), 0 center +#define AF_CONTROL_PAN_BALANCE 0x00002500 | AF_CONTROL_FILTER_SPECIFIC // Set equalizer gain, arg is a control_ext with a float* #define AF_CONTROL_EQUALIZER_GAIN 0x00001C00 | AF_CONTROL_FILTER_SPECIFIC |