26 #define SAMPLE_SIZE 16
37 #define SAMPLE_SIZE 32
47 int pred_order,
int qlevel,
int len)
51 for (i = pred_order; i < len - 1; i += 2, decoded += 2) {
55 for (j = 1; j < pred_order; j++) {
62 d = decoded[j] += s0 >> qlevel;
64 decoded[j + 1] +=
s1 >> qlevel;
68 for (j = 0; j < pred_order; j++)
69 sum += coeffs[j] * decoded[j];
70 decoded[j] += sum >> qlevel;
75 int pred_order,
int qlevel,
int len)
79 for (i = pred_order; i <
len; i++, decoded++) {
81 for (j = 0; j < pred_order; j++)
82 sum += (int64_t)coeffs[j] * decoded[j];
83 decoded[j] += sum >> qlevel;
void(* lpc32_encode)(int32_t *res, const int32_t *smp, int len, int order, const int32_t coefs[32], int shift)
Macro definitions for various function/variable attributes.
void(* lpc32)(int32_t *samples, const int coeffs[32], int order, int qlevel, int len)
void(* lpc16_encode)(int32_t *res, const int32_t *smp, int len, int order, const int32_t coefs[32], int shift)
static void flac_lpc_32_c(int32_t *decoded, const int coeffs[32], int pred_order, int qlevel, int len)
void ff_flacdsp_init_x86(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps)
AVSampleFormat
Audio sample formats.
av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps)
av_cold void ff_flacdsp_init_arm(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, int bps)
void(* lpc16)(int32_t *samples, const int coeffs[32], int order, int qlevel, int len)
static void flac_lpc_16_c(int32_t *decoded, const int coeffs[32], int pred_order, int qlevel, int len)
void(* decorrelate[4])(uint8_t **out, int32_t **in, int channels, int len, int shift)