#include "libavutil/attributes.h"
#include "libavutil/samplefmt.h"
#include "flacdsp.h"
+#include "config.h"
#define SAMPLE_SIZE 16
#define PLANAR 0
#include "flacdsp_template.c"
+#include "flacdsp_lpc_template.c"
#undef PLANAR
#define PLANAR 1
#define SAMPLE_SIZE 32
#define PLANAR 0
#include "flacdsp_template.c"
+#include "flacdsp_lpc_template.c"
#undef PLANAR
#define PLANAR 1
{
int i, j;
- for (i = pred_order; i < len - 1; i += 2) {
- int c;
- int d = decoded[i-pred_order];
+ for (i = pred_order; i < len - 1; i += 2, decoded += 2) {
+ int c = coeffs[0];
+ int d = decoded[0];
int s0 = 0, s1 = 0;
- for (j = pred_order-1; j > 0; j--) {
- c = coeffs[j];
+ for (j = 1; j < pred_order; j++) {
s0 += c*d;
- d = decoded[i-j];
+ d = decoded[j];
s1 += c*d;
+ c = coeffs[j];
}
- c = coeffs[0];
s0 += c*d;
- d = decoded[i] += s0 >> qlevel;
+ d = decoded[j] += s0 >> qlevel;
s1 += c*d;
- decoded[i+1] += s1 >> qlevel;
+ decoded[j + 1] += s1 >> qlevel;
}
if (i < len) {
int sum = 0;
for (j = 0; j < pred_order; j++)
- sum += coeffs[j] * decoded[i-j-1];
- decoded[i] += sum >> qlevel;
+ sum += coeffs[j] * decoded[j];
+ decoded[j] += sum >> qlevel;
}
}
{
int i, j;
- for (i = pred_order; i < len; i++) {
+ for (i = pred_order; i < len; i++, decoded++) {
int64_t sum = 0;
for (j = 0; j < pred_order; j++)
- sum += (int64_t)coeffs[j] * decoded[i-j-1];
- decoded[i] += sum >> qlevel;
+ sum += (int64_t)coeffs[j] * decoded[j];
+ decoded[j] += sum >> qlevel;
}
}
av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt,
int bps)
{
- if (bps > 16)
+ if (bps > 16) {
c->lpc = flac_lpc_32_c;
- else
+ c->lpc_encode = flac_lpc_encode_c_32;
+ } else {
c->lpc = flac_lpc_16_c;
+ c->lpc_encode = flac_lpc_encode_c_16;
+ }
switch (fmt) {
case AV_SAMPLE_FMT_S32:
c->decorrelate[3] = flac_decorrelate_ms_c_16p;
break;
}
+
+ if (ARCH_ARM)
+ ff_flacdsp_init_arm(c, fmt, bps);
}