FreeCalypso > hg > gsm-codec-lib
view libgsmefr/basic_op_orig.h @ 477:4c9222d95647
libtwamr encoder: always emit frame->mode = mode;
In the original implementation of amr_encode_frame(), the 'mode' member
of the output struct was set to 0xFF if the output frame type is TX_NO_DATA.
This design was made to mimic the mode field (16-bit word) being set to
0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends
on this struct member being set in any way, and amr_frame_to_tseq()
generates the needed 0xFFFF on its own, based on frame->type being equal
to TX_NO_DATA.
It is simpler and more efficient to always set frame->mode to the actual
encoding mode in amr_encode_frame(), and this new behavior has already
been documented in doc/AMR-library-API description in anticipation of
the present change.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sat, 18 May 2024 22:30:42 +0000 |
| parents | 1c514150c033 |
| children |
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/*___________________________________________________________________________ | | | Constants and Globals | |___________________________________________________________________________| */ extern __thread Flag Overflow; extern __thread Flag Carry; #define MAX_32 (Word32)0x7fffffffL #define MIN_32 (Word32)0x80000000L #define MAX_16 (Word16)0x7fff #define MIN_16 (Word16)0x8000 /*___________________________________________________________________________ | | | Prototypes for basic arithmetic operators | |___________________________________________________________________________| */ Word16 add (Word16 var1, Word16 var2); /* Short add, 1 */ Word16 sub (Word16 var1, Word16 var2); /* Short sub, 1 */ Word16 abs_s (Word16 var1); /* Short abs, 1 */ Word16 shl (Word16 var1, Word16 var2); /* Short shift left, 1 */ Word16 shr (Word16 var1, Word16 var2); /* Short shift right, 1 */ Word16 mult (Word16 var1, Word16 var2); /* Short mult, 1 */ Word32 L_mult (Word16 var1, Word16 var2); /* Long mult, 1 */ Word16 negate (Word16 var1); /* Short negate, 1 */ Word16 extract_h (Word32 L_var1); /* Extract high, 1 */ Word16 extract_l (Word32 L_var1); /* Extract low, 1 */ Word16 round (Word32 L_var1); /* Round, 1 */ Word32 L_mac (Word32 L_var3, Word16 var1, Word16 var2); /* Mac, 1 */ Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2); /* Msu, 1 */ Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2); /* Mac without sat, 1 */ Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2); /* Msu without sat, 1 */ Word32 L_add (Word32 L_var1, Word32 L_var2); /* Long add, 2 */ Word32 L_sub (Word32 L_var1, Word32 L_var2); /* Long sub, 2 */ Word32 L_add_c (Word32 L_var1, Word32 L_var2); /* Long add with c, 2 */ Word32 L_sub_c (Word32 L_var1, Word32 L_var2); /* Long sub with c, 2 */ Word32 L_negate (Word32 L_var1); /* Long negate, 2 */ Word16 mult_r (Word16 var1, Word16 var2); /* Mult with round, 2 */ Word32 L_shl (Word32 L_var1, Word16 var2); /* Long shift left, 2 */ Word32 L_shr (Word32 L_var1, Word16 var2); /* Long shift right, 2*/ Word16 shr_r (Word16 var1, Word16 var2); /* Shift right with round, 2 */ Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2); /* Mac with rounding,2 */ Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2); /* Msu with rounding,2 */ Word32 L_deposit_h (Word16 var1); /* 16 bit var1 -> MSB, 2 */ Word32 L_deposit_l (Word16 var1); /* 16 bit var1 -> LSB, 2 */ Word32 L_shr_r (Word32 L_var1, Word16 var2); /* Long shift right with round, 3 */ Word32 L_abs (Word32 L_var1); /* Long abs, 3 */ Word32 L_sat (Word32 L_var1); /* Long saturation, 4 */ Word16 norm_s (Word16 var1); /* Short norm, 15 */ Word16 div_s (Word16 var1, Word16 var2); /* Short division, 18 */ Word16 norm_l (Word32 L_var1); /* Long norm, 30 */