[FFmpeg-devel] [PATCH 3/3] lavc/g729dec: use ff_parity()

Clément Bœsch u at pkh.me
Sun Jan 3 20:21:02 CET 2016


---
 libavcodec/g729dec.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/libavcodec/g729dec.c b/libavcodec/g729dec.c
index 99053ad..7265883 100644
--- a/libavcodec/g729dec.c
+++ b/libavcodec/g729dec.c
@@ -181,14 +181,6 @@ static inline uint16_t g729_prng(uint16_t value)
 }
 
 /**
- * Get parity bit of bit 2..7
- */
-static inline int get_parity(uint8_t value)
-{
-   return (0x6996966996696996ULL >> (value >> 2)) & 1;
-}
-
-/**
  * Decodes LSF (Line Spectral Frequencies) from L0-L3 (3.2.4).
  * @param[out] lsfq (2.13) quantized LSF coefficients
  * @param[in,out] past_quantizer_outputs (2.13) quantizer outputs from previous frames
@@ -480,7 +472,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
 
         ac_index      = get_bits(&gb, format->ac_index_bits[i]);
         if(!i && format->parity_bit)
-            bad_pitch = get_parity(ac_index) == get_bits1(&gb);
+            bad_pitch = ff_parity(ac_index >> 2) == get_bits1(&gb);
         fc_indexes    = get_bits(&gb, format->fc_indexes_bits);
         pulses_signs  = get_bits(&gb, format->fc_signs_bits);
         gc_1st_index  = get_bits(&gb, format->gc_1st_index_bits);
-- 
2.6.4



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