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Changed decode_pcm4 functions to use int16_t instead of uint16_t

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This commit is contained in:
NicknineTheEagle 2019-01-10 02:54:52 +03:00
parent a9ad21c77b
commit c47ae9632a
1 changed files with 8 additions and 8 deletions
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16
src/coding/pcm_decoder.c
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@ -81,7 +81,7 @@ void decode_pcm8_sb(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspaci
void decode_pcm4(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int channel) {
int i, nibble_shift, is_high_first, is_stereo;
int32_t sample_count;
uint16_t sample;
int16_t v;
off_t byte_offset;
is_high_first = (vgmstream->codec_config & 1);
@ -95,16 +95,16 @@ void decode_pcm4(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, sample * outb
is_stereo ? (!(channel&1) ? 4:0) : (!(i&1) ? 4:0) : /* even = high, odd = low */
is_stereo ? (!(channel&1) ? 0:4) : (!(i&1) ? 0:4); /* even = low, odd = high */
sample = (uint16_t)read_8bit(byte_offset, stream->streamfile);
sample = (sample >> nibble_shift) & 0x0F;
outbuf[sample_count] = sample*0x11*0x100;
v = (int16_t)read_8bit(byte_offset, stream->streamfile);
v = (v >> nibble_shift) & 0x0F;
outbuf[sample_count] = v*0x11*0x100;
}
}
void decode_pcm4_unsigned(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int channel) {
int i, nibble_shift, is_high_first, is_stereo;
int32_t sample_count;
uint16_t sample;
int16_t v;
off_t byte_offset;
is_high_first = (vgmstream->codec_config & 1);
@ -118,9 +118,9 @@ void decode_pcm4_unsigned(VGMSTREAM * vgmstream, VGMSTREAMCHANNEL * stream, samp
is_stereo ? (!(channel&1) ? 4:0) : (!(i&1) ? 4:0) : /* even = high, odd = low */
is_stereo ? (!(channel&1) ? 0:4) : (!(i&1) ? 0:4); /* even = low, odd = high */
sample = (uint16_t)read_8bit(byte_offset, stream->streamfile);
sample = (sample >> nibble_shift) & 0x0F;
outbuf[sample_count] = sample*0x11*0x100 - 0x8000;
v = (int16_t)read_8bit(byte_offset, stream->streamfile);
v = (v >> nibble_shift) & 0x0F;
outbuf[sample_count] = v*0x11*0x100 - 0x8000;
}
}