diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/soundux.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/source/soundux.cpp b/source/soundux.cpp index 399b04b..6998166 100644 --- a/source/soundux.cpp +++ b/source/soundux.cpp @@ -965,6 +965,48 @@ void DecodeBlock (Channel *ch) ch->decoded[11] = ch->decoded[13] = amplitude * 3 / 4; ch->decoded[12] = amplitude; } + else if (interim[0] < interim[1] && interim[1] < interim[2] + && interim[2] < interim[3] && interim[3] < interim[4] + && interim[4] < interim[5] && interim[5] < interim[6] + && interim[6] < interim[7] + && interim[8] > interim[9] && interim[9] > interim[10] + && interim[10] > interim[11] && interim[11] > interim[12] + && interim[12] > interim[13] && interim[13] > interim[14] + && interim[14] > interim[15]) + { + /* Looks like a V wave. Make it a half-triangle wave + * with an amplitude equivalent to that + * of the highest amplitude sample of the block. */ + ch->decoded[0] = 0; + ch->decoded[1] = ch->decoded[15] = amplitude / 8; + ch->decoded[2] = ch->decoded[14] = amplitude / 4; + ch->decoded[3] = ch->decoded[13] = amplitude * 3 / 8; + ch->decoded[4] = ch->decoded[12] = amplitude / 2; + ch->decoded[5] = ch->decoded[11] = amplitude * 5 / 8; + ch->decoded[6] = ch->decoded[10] = amplitude * 3 / 4; + ch->decoded[7] = ch->decoded[9] = amplitude * 7 / 8; + ch->decoded[8] = amplitude; + } + else if (interim[0] > interim[1] && interim[1] > interim[2] + && interim[2] > interim[3] && interim[3] > interim[4] + && interim[4] > interim[5] && interim[5] > interim[6] + && interim[6] > interim[7] + && interim[8] < interim[9] && interim[9] < interim[10] + && interim[10] < interim[11] && interim[11] < interim[12] + && interim[12] < interim[13] && interim[13] < interim[14] + && interim[14] < interim[15]) + { + /* Inverted V wave. */ + ch->decoded[0] = 0; + ch->decoded[1] = ch->decoded[15] = -(amplitude / 8); + ch->decoded[2] = ch->decoded[14] = -(amplitude / 4); + ch->decoded[3] = ch->decoded[13] = -(amplitude * 3 / 8); + ch->decoded[4] = ch->decoded[12] = -(amplitude / 2); + ch->decoded[5] = ch->decoded[11] = -(amplitude * 5 / 8); + ch->decoded[6] = ch->decoded[10] = -(amplitude * 3 / 4); + ch->decoded[7] = ch->decoded[9] = -(amplitude * 7 / 8); + ch->decoded[8] = -amplitude; + } else { // Make it a square wave with an amplitude equivalent to that |