diff options
Diffstat (limited to 'libavutil/tx_priv.h')
| -rw-r--r-- | libavutil/tx_priv.h | 61 |
1 files changed, 57 insertions, 4 deletions
diff --git a/libavutil/tx_priv.h b/libavutil/tx_priv.h index 94517b4b47..6fabea2d4d 100644 --- a/libavutil/tx_priv.h +++ b/libavutil/tx_priv.h @@ -28,28 +28,77 @@ #ifdef TX_FLOAT #define TX_NAME(x) x ## _float +#define SCALE_TYPE float typedef float FFTSample; typedef AVComplexFloat FFTComplex; #elif defined(TX_DOUBLE) #define TX_NAME(x) x ## _double +#define SCALE_TYPE double typedef double FFTSample; typedef AVComplexDouble FFTComplex; +#elif defined(TX_INT32) +#define TX_NAME(x) x ## _int32 +#define SCALE_TYPE float +typedef int32_t FFTSample; +typedef AVComplexInt32 FFTComplex; #else typedef void FFTComplex; #endif #if defined(TX_FLOAT) || defined(TX_DOUBLE) -#define BF(x, y, a, b) do { \ - x = (a) - (b); \ - y = (a) + (b); \ - } while (0) + +#define MUL(x, y) ((x)*(y)) #define CMUL(dre, dim, are, aim, bre, bim) do { \ (dre) = (are) * (bre) - (aim) * (bim); \ (dim) = (are) * (bim) + (aim) * (bre); \ } while (0) + +#define SMUL(dre, dim, are, aim, bre, bim) do { \ + (dre) = (are) * (bre) - (aim) * (bim); \ + (dim) = (are) * (bim) - (aim) * (bre); \ + } while (0) + +#define RESCALE(x) (x) + +#define FOLD(a, b) ((a) + (b)) + +#elif defined(TX_INT32) + +#define MUL(x, y) ((int32_t)(((int64_t)(x) * (int64_t)(y) + 0x40000000) >> 31)) + +/* Properly rounds the result */ +#define CMUL(dre, dim, are, aim, bre, bim) do { \ + int64_t accu; \ + (accu) = (int64_t)(bre) * (are); \ + (accu) -= (int64_t)(bim) * (aim); \ + (dre) = (int)(((accu) + 0x40000000) >> 31); \ + (accu) = (int64_t)(bim) * (are); \ + (accu) += (int64_t)(bre) * (aim); \ + (dim) = (int)(((accu) + 0x40000000) >> 31); \ + } while (0) + +#define SMUL(dre, dim, are, aim, bre, bim) do { \ + int64_t accu; \ + (accu) = (int64_t)(bre) * (are); \ + (accu) -= (int64_t)(bim) * (aim); \ + (dre) = (int)(((accu) + 0x40000000) >> 31); \ + (accu) = (int64_t)(bim) * (are); \ + (accu) -= (int64_t)(bre) * (aim); \ + (dim) = (int)(((accu) + 0x40000000) >> 31); \ + } while (0) + +#define RESCALE(x) (lrintf((x) * 2147483648.0)) + +#define FOLD(x, y) ((int)((x) + (unsigned)(y) + 32) >> 6) + #endif +#define BF(x, y, a, b) do { \ + x = (a) - (b); \ + y = (a) + (b); \ + } while (0) + #define CMUL3(c, a, b) \ CMUL((c).re, (c).im, (a).re, (a).im, (b).re, (b).im) @@ -70,6 +119,7 @@ struct AVTXContext { }; /* Shared functions */ +int ff_tx_type_is_mdct(enum AVTXType type); int ff_tx_gen_compound_mapping(AVTXContext *s); int ff_tx_gen_ptwo_revtab(AVTXContext *s); @@ -96,6 +146,9 @@ int ff_tx_init_mdct_fft_float(AVTXContext *s, av_tx_fn *tx, int ff_tx_init_mdct_fft_double(AVTXContext *s, av_tx_fn *tx, enum AVTXType type, int inv, int len, const void *scale, uint64_t flags); +int ff_tx_init_mdct_fft_int32(AVTXContext *s, av_tx_fn *tx, + enum AVTXType type, int inv, int len, + const void *scale, uint64_t flags); typedef struct CosTabsInitOnce { void (*func)(void); |