fn decode_frame(&mut self, br: &mut ByteReader) -> DecoderResult<bool> {
let frame_x = br.read_u16le()? as usize;
let frame_y = br.read_u16le()? as usize;
- let frame_l = br.read_u16le()? as usize;
+ let frame_r = br.read_u16le()? as usize;
let frame_d = br.read_u16le()? as usize;
br.read_skip(1)?;
let flags = br.read_byte()?;
let has_pal = (flags & 0x02) != 0 && !self.is_16bit && !self.is_24bit;
- if (frame_x == 0xFFFF) && (frame_y == 0xFFFF) && (frame_l == 0xFFFF) && (frame_d == 0xFFFF) {
+ if (frame_x == 0xFFFF) && (frame_y == 0xFFFF) && (frame_r == 0xFFFF) && (frame_d == 0xFFFF) {
return Ok(false);
}
validate!(frame_x >= self.xoff && frame_y >= self.yoff);
- validate!(frame_l >= frame_x && frame_d >= frame_y);
- validate!(frame_l - self.xoff < self.width && frame_d - self.yoff < self.height);
+ validate!(frame_r >= frame_x && frame_d >= frame_y);
+ validate!(frame_r - self.xoff < self.width && frame_d - self.yoff < self.height);
if has_pal {
br.read_skip(2)?;
} else {
3
};
- let w = (frame_l + 1 - frame_x) * bpp;
+ let w = (frame_r + 1 - frame_x) * bpp;
let h = frame_d + 1 - frame_y;
let stride = self.width;
let dpos = (frame_x - self.xoff) * bpp + (frame_y - self.yoff) * stride;
}
}
+impl NAOptionHandler for VMDVideoDecoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
pub fn get_decoder_video() -> Box<dyn NADecoder + Send> {
Box::new(VMDVideoDecoder::new())
pred + i32::from(SOL_AUD_STEPS16[(val & 0x7F) as usize])
}
}
- fn cvt_u8(val: u8) -> u8 {
- val ^ 0x80
- }
}
impl NADecoder for VMDAudioDecoder {
self.is_odd = (channels == 2) && ((self.blk_size & 1) != 0);
}
} else {
- fmt = SND_S16P_FORMAT;
self.blk_align = ainfo.get_block_len();
if (flags & 0x10) == 0 {
+ fmt = SND_S16P_FORMAT;
self.blk_size = (ainfo.get_block_len() + 1) * channels;
self.mode = VMDAudioMode::DPCM;
} else {
- self.blk_size = ainfo.get_block_len() / 2 + 3;
+ fmt = SND_S16_FORMAT;
+ self.blk_size = (ainfo.get_block_len() * channels + 1) / 2 + 3 * channels;
self.mode = VMDAudioMode::ADPCM;
}
};
dst[doff + i] = br.read_byte()?;
}
} else {
- for i in 0..self.blk_size {
- let val = Self::cvt_u8(br.read_byte()?);
- dst[doff + i] = val;
- }
+ unreachable!();
}
doff += self.blk_align * channels;
mask >>= 1;
let mut ima = IMAState::new();
for _ in 0..nblocks {
if (mask & 1) != 0 {
- doff += (self.blk_size - 3) * 2;
+ for i in 0..self.blk_align {
+ dst[doff + i] = 0;
+ }
+ doff += self.blk_align;
mask >>= 1;
continue;
}
let step = br.read_byte()?;
validate!((step as usize) < IMA_STEP_TABLE.len());
ima.reset(pred, step);
- for _ in 3..self.blk_size {
+ let mut b = 0;
+ for i in 0..self.blk_align {
+ if (i & 1) == 0 {
+ b = br.read_byte()?;
+ dst[doff] = ima.expand_sample(b >> 4);
+ } else {
+ dst[doff] = ima.expand_sample(b & 0xF);
+ }
+ doff += 1;
+ }
+ mask >>= 1;
+ }
+ } else {
+ let mut mask = mask;
+ let mut ima1 = IMAState::new();
+ let mut ima2 = IMAState::new();
+ for _ in 0..nblocks {
+ if (mask & 1) != 0 {
+ for i in 0..self.blk_align * 2 {
+ dst[doff + i] = 0;
+ }
+ doff += self.blk_align * 2;
+ mask >>= 1;
+ continue;
+ }
+ let pred1 = br.read_u16le()? as i16;
+ let pred2 = br.read_u16le()? as i16;
+ let step1 = br.read_byte()?;
+ let step2 = br.read_byte()?;
+ validate!((step1 as usize) < IMA_STEP_TABLE.len());
+ validate!((step2 as usize) < IMA_STEP_TABLE.len());
+ ima1.reset(pred1, step1);
+ ima2.reset(pred2, step2);
+ for _ in 0..self.blk_align {
let b = br.read_byte()?;
- dst[doff] = ima.expand_sample(b >> 4);
+ dst[doff] = ima1.expand_sample(b >> 4);
doff += 1;
- dst[doff] = ima.expand_sample(b & 0xF);
+ dst[doff] = ima2.expand_sample(b & 0xF);
doff += 1;
}
mask >>= 1;
}
- } else {
- return Err(DecoderError::InvalidData);
}
},
};
}
}
+impl NAOptionHandler for VMDAudioDecoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
pub fn get_decoder_audio() -> Box<dyn NADecoder + Send> {
Box::new(VMDAudioDecoder::new())
}