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path: root/lib/rbcodec/dsp/lin_resample.c
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Diffstat (limited to 'lib/rbcodec/dsp/lin_resample.c')
-rw-r--r--lib/rbcodec/dsp/lin_resample.c43
1 files changed, 36 insertions, 7 deletions
diff --git a/lib/rbcodec/dsp/lin_resample.c b/lib/rbcodec/dsp/lin_resample.c
index b3855ec768..5a6f55ac48 100644
--- a/lib/rbcodec/dsp/lin_resample.c
+++ b/lib/rbcodec/dsp/lin_resample.c
@@ -40,6 +40,9 @@
40 40
41#define RESAMPLE_BUF_COUNT 192 /* Per channel, per DSP */ 41#define RESAMPLE_BUF_COUNT 192 /* Per channel, per DSP */
42 42
43/* CODEC_IDX_AUDIO = left and right, CODEC_IDX_VOICE = mono */
44static int32_t resample_out_bufs[3][RESAMPLE_BUF_COUNT] IBSS_ATTR;
45
43/* Data for each resampler on each DSP */ 46/* Data for each resampler on each DSP */
44static struct resample_data 47static struct resample_data
45{ 48{
@@ -50,7 +53,7 @@ static struct resample_data
50 /* 14h */ 53 /* 14h */
51 struct dsp_config *dsp; /* The DSP for this resampler */ 54 struct dsp_config *dsp; /* The DSP for this resampler */
52 struct dsp_buffer resample_buf; /* Buffer descriptor for resampled data */ 55 struct dsp_buffer resample_buf; /* Buffer descriptor for resampled data */
53 int32_t resample_buf_arr[2][RESAMPLE_BUF_COUNT]; /* Actual output data */ 56 int32_t *resample_buf_arr[2]; /* Actual output data pointers */
54} resample_data[DSP_COUNT] IBSS_ATTR; 57} resample_data[DSP_COUNT] IBSS_ATTR;
55 58
56/* Actual worker function. Implemented here or in target assembly code. */ 59/* Actual worker function. Implemented here or in target assembly code. */
@@ -165,11 +168,9 @@ static void lin_resample_process(struct dsp_proc_entry *this,
165 if (dst->remcount > 0) 168 if (dst->remcount > 0)
166 return; /* data still remains */ 169 return; /* data still remains */
167 170
168 int channels = src->format.num_channels;
169
170 dst->remcount = 0; 171 dst->remcount = 0;
171 dst->p32[0] = data->resample_buf_arr[0]; 172 dst->p32[0] = data->resample_buf_arr[0];
172 dst->p32[1] = data->resample_buf_arr[channels - 1]; 173 dst->p32[1] = data->resample_buf_arr[1];
173 174
174 if (src->remcount > 0) 175 if (src->remcount > 0)
175 { 176 {
@@ -238,6 +239,36 @@ static void lin_resample_new_format(struct dsp_proc_entry *this,
238 dsp_proc_call(this, buf_p, 0); 239 dsp_proc_call(this, buf_p, 0);
239} 240}
240 241
242static void lin_resample_init(struct dsp_config *dsp,
243 enum dsp_ids dsp_id)
244{
245 /* Always enable resampler so that format changes may be monitored and
246 * it self-activated when required */
247 dsp_proc_enable(dsp, DSP_PROC_RESAMPLE, true);
248
249 int32_t *lbuf, *rbuf;
250
251 switch (dsp_id)
252 {
253 case CODEC_IDX_AUDIO:
254 lbuf = resample_out_bufs[0];
255 rbuf = resample_out_bufs[1];
256 break;
257
258 case CODEC_IDX_VOICE:
259 lbuf = rbuf = resample_out_bufs[2]; /* Always mono */
260 break;
261
262 default:
263 /* huh? */
264 DEBUGF("DSP_PROC_RESAMPLE- unknown DSP %d\n", (int)dsp_id);
265 return;
266 }
267
268 resample_data[dsp_id].resample_buf_arr[0] = lbuf;
269 resample_data[dsp_id].resample_buf_arr[1] = rbuf;
270}
271
241/* DSP message hook */ 272/* DSP message hook */
242static intptr_t lin_resample_configure(struct dsp_proc_entry *this, 273static intptr_t lin_resample_configure(struct dsp_proc_entry *this,
243 struct dsp_config *dsp, 274 struct dsp_config *dsp,
@@ -247,9 +278,7 @@ static intptr_t lin_resample_configure(struct dsp_proc_entry *this,
247 switch (setting) 278 switch (setting)
248 { 279 {
249 case DSP_INIT: 280 case DSP_INIT:
250 /* Always enable resampler so that format changes may be monitored and 281 lin_resample_init(dsp, (enum dsp_ids)value);
251 * it self-activated when required */
252 dsp_proc_enable(dsp, DSP_PROC_RESAMPLE, true);
253 break; 282 break;
254 283
255 case DSP_FLUSH: 284 case DSP_FLUSH: