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Remove pointless IRAM allocation from voice DSP.

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It's always used in MONO mode and doesn't need the IRAM sample/
resample buffers and 1280 bytes can be freed.

M5 can now have its PCM mixer downmix buffer in IRAM.

Change-Id: I0af08be5b212b7dfe382bba588a6585eb328a038
This commit is contained in:
Michael Sevakis 2012-05-04 22:00:44 -04:00
parent dbe5e5f2df
commit 88aeef9127
4 changed files with 67 additions and 14 deletions
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31
lib/rbcodec/dsp/dsp_sample_input.c
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@ -51,6 +51,10 @@
extern void dsp_sample_output_init(struct sample_io_data *this);
extern void dsp_sample_output_flush(struct sample_io_data *this);
#define SAMPLE_BUF_COUNT 128 /* Per channel, per DSP */
/* CODEC_IDX_AUDIO = left and right, CODEC_IDX_VOICE = mono */
static int32_t sample_bufs[3][SAMPLE_BUF_COUNT] IBSS_ATTR;
/* convert count 16-bit mono to 32-bit mono */
static void sample_input_mono16(struct sample_io_data *this,
struct dsp_buffer **buf_p)
@ -269,8 +273,31 @@ static void dsp_sample_input_format_change(struct sample_io_data *this,
format_change_ack(&src->format);
}
static void dsp_sample_input_init(struct sample_io_data *this)
static void dsp_sample_input_init(struct sample_io_data *this,
enum dsp_ids dsp_id)
{
int32_t *lbuf, *rbuf;
switch (dsp_id)
{
case CODEC_IDX_AUDIO:
lbuf = sample_bufs[0];
rbuf = sample_bufs[1];
break;
case CODEC_IDX_VOICE:
lbuf = rbuf = sample_bufs[2]; /* Always mono */
break;
default:
/* orly */
DEBUGF("DSP Input- unknown dsp %d\n", (int)dsp_id);
return;
}
this->sample_buf_arr[0] = lbuf;
this->sample_buf_arr[1] = rbuf;
this->input_samples[0] = sample_input_ni_stereo32;
this->input_samples[1] = dsp_sample_input_format_change;
}
@ -288,7 +315,7 @@ void dsp_sample_io_configure(struct sample_io_data *this,
switch (setting)
{
case DSP_INIT:
dsp_sample_input_init(this);
dsp_sample_input_init(this, (enum dsp_ids)value);
dsp_sample_output_init(this);
break;