diff options
Diffstat (limited to 'apps/codecs/mp3_enc.c')
| -rw-r--r-- | apps/codecs/mp3_enc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/apps/codecs/mp3_enc.c b/apps/codecs/mp3_enc.c index 64c0996dc2..70b327aef2 100644 --- a/apps/codecs/mp3_enc.c +++ b/apps/codecs/mp3_enc.c @@ -174,6 +174,7 @@ static unsigned samp_per_frame IBSS_ATTR; static config_t cfg IBSS_ATTR; static char *res_buffer; +static int32_t err IBSS_ATTR; static const uint8_t ht_count_const[2][2][16] = { { { 1, 5, 4, 5, 6, 5, 4, 4, 7, 3, 6, 0, 7, 2, 3, 1 }, /* table0 */ @@ -2055,7 +2056,9 @@ static void to_mono_mm(void) inline void to_mono(uint32_t **samp) { int32_t lr = **samp; - int32_t m = ((int16_t)lr + (lr >> 16)) / 2; + int32_t m = (int16_t)lr + (lr >> 16) + err; + err = m & 1; + m >>= 1; *(*samp)++ = (m << 16) | (uint16_t)m; } /* to_mono */ @@ -2434,6 +2437,8 @@ static bool enc_init(void) init_mp3_encoder_engine(inputs.sample_rate, inputs.num_channels, inputs.config); + err = 0; + /* configure the buffer system */ params.afmt = AFMT_MPA_L3; params.chunk_size = cfg.byte_per_frame + 1; |