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dsp: add option to swap left and right channels

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Change-Id: Id4b518638436576cfb5e747548f10ece6e58eba0
This commit is contained in:
Christian Soffke 2026-04-16 10:52:16 +02:00 • committed by Solomon Peachy
parent 5ac105c837
commit cc7418dd8b
5 changed files with 44 additions and 3 deletions
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22
lib/rbcodec/dsp/channel_mode.c
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@ -43,6 +43,8 @@ void channel_mode_proc_custom(struct dsp_proc_entry *this,
struct dsp_buffer **buf_p);
void channel_mode_proc_karaoke(struct dsp_proc_entry *this,
struct dsp_buffer **buf_p);
void channel_mode_proc_swap(struct dsp_proc_entry *this,
struct dsp_buffer **buf_p);
static struct channel_mode_data
{
@ -131,6 +133,25 @@ void channel_mode_proc_karaoke(struct dsp_proc_entry *this,
}
#endif /* CPU */
void channel_mode_proc_swap(struct dsp_proc_entry *this,
struct dsp_buffer **buf_p)
{
struct dsp_buffer *buf = *buf_p;
int32_t *sl = buf->p32[0];
int32_t *sr = buf->p32[1];
int count = buf->remcount;
do
{
int32_t l = *sl;
*sl++ = *sr;
*sr++ = l;
}
while (--count > 0);
(void)this;
}
void channel_mode_proc_mono_left(struct dsp_proc_entry *this,
struct dsp_buffer **buf_p)
{
@ -194,6 +215,7 @@ static void update_process_fn(struct dsp_proc_entry *this)
[SOUND_CHAN_MONO_LEFT] = channel_mode_proc_mono_left,
[SOUND_CHAN_MONO_RIGHT] = channel_mode_proc_mono_right,
[SOUND_CHAN_KARAOKE] = channel_mode_proc_karaoke,
[SOUND_CHAN_SWAP] = channel_mode_proc_swap,
};
this->process = fns[((struct channel_mode_data *)this->data)->mode];