diff options
Diffstat (limited to 'lib/rbcodec/codecs/libpcm/ieee_float.c')
| -rw-r--r-- | lib/rbcodec/codecs/libpcm/ieee_float.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/lib/rbcodec/codecs/libpcm/ieee_float.c b/lib/rbcodec/codecs/libpcm/ieee_float.c index 639390bcd5..97a7fcecd4 100644 --- a/lib/rbcodec/codecs/libpcm/ieee_float.c +++ b/lib/rbcodec/codecs/libpcm/ieee_float.c @@ -38,7 +38,7 @@ static bool set_format(struct pcm_format *format) return false; } - if (fmt->bitspersample != 32 && fmt->bitspersample != 64) + if (fmt->bitspersample != 16 && fmt->bitspersample != 32 && fmt->bitspersample != 64) { DEBUGF("CODEC_ERROR: ieee float must be 32 or 64 bitspersample: %d\n", fmt->bitspersample); @@ -114,6 +114,33 @@ static int decode(const uint8_t *inbuf, size_t inbufsize, } *outbufsize = inbufsize >> 2; } + else if (fmt->bitspersample == 16) + { + for (i = 0; i < inbufsize; i += 2) + { + pcm = inbuf[0]|((inbuf[1]&0x03)<<8); + exp = ((inbuf[1]&0x7c)>>2)-15; + sgn = (inbuf[1] & 0x80)>>7; + + if(exp == -15) + pcm =0; + else + { + pcm+=1<<10; + exp+=2; /*shift by 2 for rockbox fixed format*/ + if(exp>=0) + pcm <<= (exp); + else + pcm >>= (-exp); + + if (sgn) + pcm = -pcm; + } + outbuf[i/2] = pcm; + inbuf += 2; + } + *outbufsize = inbufsize >> 1; + } else { for (i = 0; i < inbufsize; i += 8) |