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reorganizing a bit

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chudov
2010-02-06 23:17:07 +00:00
parent 492f5b845a
commit 1f844b44e1
82 changed files with 5239 additions and 3946 deletions
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173
CUETools.Codecs.ALAC/ALACDotNet.cs
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@@ -27,6 +27,7 @@ using CUETools.Codecs;
namespace CUETools.Codecs.ALAC
{
[AudioDecoderClass("builtin alac", "m4a")]
public class ALACReader : IAudioSource
{
public ALACReader(string path, Stream IO)
@@ -36,19 +37,17 @@ namespace CUETools.Codecs.ALAC
_buff = new byte[512];
_tags = new NameValueCollection();
qtmovie_read();
if (!_formatRead || _bitsPerSample != 16 || _channelCount != 2 || _sampleRate != 44100)
if (!_formatRead || pcm.BitsPerSample != 16 || pcm.ChannelCount != 2 || pcm.SampleRate != 44100)
throw new Exception("Invalid ALAC file.");
_saved_mdat_pos = _IO.Position;
calculate_length();
}
public ALACReader(int channels, int bps, int rice_historymult, int rice_initialhistory, int rice_kmodifier, int blocksize)
public ALACReader(AudioPCMConfig _pcm, int rice_historymult, int rice_initialhistory, int rice_kmodifier, int blocksize)
{
_channelCount = channels;
_bitsPerSample = bps;
_sampleRate = 44100;
pcm = _pcm;
setinfo_max_samples_per_frame = (uint)blocksize;
setinfo_max_samples_per_frame = blocksize;
setinfo_rice_historymult = (byte)rice_historymult;
setinfo_rice_initialhistory = (byte)rice_initialhistory;
setinfo_rice_kmodifier = (byte)rice_kmodifier;
@@ -60,17 +59,12 @@ namespace CUETools.Codecs.ALAC
_framesBuffer = new byte[65536];
}
public int[,] Read(int[,] buff)
{
return AudioSamples.Read(this, buff);
}
private void InitTables()
{
if (_predicterror_buffer_a != null)
return;
setinfo_max_samples_per_frame = read_uint32(_codecData, 24);
setinfo_max_samples_per_frame = (int)read_uint32(_codecData, 24);
byte setinfo_7a = read_uint8(_codecData, 28);
byte setinfo_sample_size = read_uint8(_codecData, 29);
setinfo_rice_historymult = read_uint8(_codecData, 30);
@@ -91,29 +85,32 @@ namespace CUETools.Codecs.ALAC
_framesBuffer = new byte[65536];
}
public uint Read(int[,] buff, uint sampleCount)
public int Read(AudioBuffer buff, int maxLength)
{
InitTables();
uint offset = 0;
buff.Prepare(this, maxLength);
int offset = 0;
int sampleCount = buff.Length;
while (_samplesInBuffer < sampleCount)
{
if (_samplesInBuffer > 0)
{
deinterlace(buff, offset, _samplesInBuffer);
sampleCount -= (uint) _samplesInBuffer;
deinterlace(buff.Samples, offset, _samplesInBuffer);
sampleCount -= _samplesInBuffer;
offset += _samplesInBuffer;
_samplesInBuffer = 0;
_samplesBufferOffset = 0;
}
uint sampleDuration;
uint sampleSize;
if ((int) _iSample >= _sample_byte_size.Length)
return (uint)offset;
int sampleDuration;
int sampleSize;
if (_iSample >= _sample_byte_size.Length)
return offset;
get_sample_info(_iSample, out sampleDuration, out sampleSize);
_IO.Read(_framesBuffer, 0, (int) sampleSize);
_IO.Read(_framesBuffer, 0, sampleSize);
decodeFrame(sampleSize);
if (sampleDuration != _samplesInBuffer)
throw new Exception("sample count mismatch");
@@ -122,12 +119,12 @@ namespace CUETools.Codecs.ALAC
_iSample++;
}
deinterlace(buff, offset, sampleCount);
deinterlace(buff.Samples, offset, sampleCount);
_samplesInBuffer -= sampleCount;
_samplesBufferOffset += sampleCount;
if (_samplesInBuffer == 0)
_samplesBufferOffset = 0;
return (uint) offset + sampleCount;
return offset + sampleCount;
}
public void Close()
@@ -135,7 +132,7 @@ namespace CUETools.Codecs.ALAC
_IO.Close();
}
public ulong Length
public long Length
{
get
{
@@ -143,7 +140,7 @@ namespace CUETools.Codecs.ALAC
}
}
public ulong Remaining
public long Remaining
{
get
{
@@ -151,7 +148,7 @@ namespace CUETools.Codecs.ALAC
}
}
public ulong Position
public long Position
{
get
{
@@ -164,10 +161,10 @@ namespace CUETools.Codecs.ALAC
_samplesBufferOffset = 0;
_iSample = 0;
ulong durOffs = 0;
uint sampleDuration;
long durOffs = 0;
int sampleDuration;
long fileOffs = 0;
uint sampleSize;
int sampleSize;
do
{
if (durOffs == value)
@@ -183,51 +180,12 @@ namespace CUETools.Codecs.ALAC
_iSample++;
} while (durOffs <= value);
_IO.Position = _saved_mdat_pos + fileOffs - sampleSize;
_samplesBufferOffset = (uint) (value + sampleDuration - durOffs);
_samplesBufferOffset = (int) (value + sampleDuration - durOffs);
_iSample--;
}
}
public int BitsPerSample
{
get
{
return _bitsPerSample;
}
}
public int ChannelCount
{
get
{
return _channelCount;
}
}
public int SampleRate
{
get
{
return _sampleRate;
}
}
public NameValueCollection Tags
{
get
{
return _tags;
}
set
{
_tags = value;
}
}
public bool UpdateTags(bool preserveTime)
{
return false;
}
public AudioPCMConfig PCM { get { return pcm; } }
public string Path
{
@@ -237,11 +195,11 @@ namespace CUETools.Codecs.ALAC
}
}
private void get_sample_info(ulong iSample, out uint sampleDuration, out uint sampleSize)
private void get_sample_info(long iSample, out int sampleDuration, out int sampleSize)
{
// if (iSample >= _sample_byte_size.Length)
uint duration_index_accum = 0;
uint duration_cur_index = 0;
int duration_index_accum = 0;
int duration_cur_index = 0;
while (_time_to_sample_count[duration_cur_index] + duration_index_accum <= iSample)
{
duration_index_accum += _time_to_sample_count[duration_cur_index];
@@ -262,11 +220,11 @@ namespace CUETools.Codecs.ALAC
// try a work around for ffdshow-generated buggy files
if (_time_to_sample_count.Length == 1 && _IO.CanSeek)
{
uint sample_count_0 = _time_to_sample_count[0] - 1;
uint sample_duration_0 = _time_to_sample_duration[0];
int sample_count_0 = _time_to_sample_count[0] - 1;
int sample_duration_0 = _time_to_sample_duration[0];
Position = sample_count_0 * sample_duration_0;
uint sampleDuration;
uint sampleSize;
int sampleDuration;
int sampleSize;
if ((int)_iSample < _sample_byte_size.Length)
{
get_sample_info(_iSample, out sampleDuration, out sampleSize);
@@ -275,8 +233,8 @@ namespace CUETools.Codecs.ALAC
decodeFrame(sampleSize);
if (_samplesInBuffer < sampleDuration)
{
_time_to_sample_duration = new uint[2] { sample_duration_0, _samplesInBuffer };
_time_to_sample_count = new uint[2] { sample_count_0, 1 };
_time_to_sample_duration = new int[2] { sample_duration_0, _samplesInBuffer };
_time_to_sample_count = new int[2] { sample_count_0, 1 };
_sampleCount -= sampleDuration - _samplesInBuffer;
}
}
@@ -485,7 +443,7 @@ namespace CUETools.Codecs.ALAC
return x;
}
private unsafe void basterdised_rice_decompress(uint output_size, ref int pos, ref predictor_t predictor_info, ref int[] predicterror_buffer, int readsamplesize)
private unsafe void basterdised_rice_decompress(int output_size, ref int pos, ref predictor_t predictor_info, ref int[] predicterror_buffer, int readsamplesize)
{
fixed (predictor_t* pr = &predictor_info)
fixed (int* output_buffer = &predicterror_buffer[0])
@@ -540,7 +498,7 @@ namespace CUETools.Codecs.ALAC
return (short)(1 - ((v >> 30) & 2));
}
private unsafe void predictor_decompress_fir_adapt(uint output_size, ref predictor_t predictor_info, ref int[] error_buffer, ref int[] buffer_out, int readsamplesize)
private unsafe void predictor_decompress_fir_adapt(int output_size, ref predictor_t predictor_info, ref int[] error_buffer, ref int[] buffer_out, int readsamplesize)
{
int i;
@@ -623,7 +581,7 @@ namespace CUETools.Codecs.ALAC
}
}
internal unsafe void deinterlace(int[,] samplesBuffer, uint offset, uint sampleCount)
internal unsafe void deinterlace(int[,] samplesBuffer, int offset, int sampleCount)
{
if (sampleCount <= 0 || sampleCount > _samplesInBuffer)
return;
@@ -656,18 +614,18 @@ namespace CUETools.Codecs.ALAC
}
/* otherwise basic interlacing took place */
AudioSamples.Interlace(buf_s, buf_a, buf_b, (int)sampleCount);
AudioSamples.Interlace(buf_s, buf_a, buf_b, sampleCount);
}
}
internal int DecodeFrame(byte[] buffer, int pos, int len)
{
Array.Copy(buffer, pos, _framesBuffer, 0, len);
decodeFrame((uint)len);
decodeFrame(len);
return len; // pos
}
private void decodeFrame(uint sampleSize)
private void decodeFrame(int sampleSize)
{
_bitaccumulator = 0;
int pos = 0;
@@ -681,9 +639,9 @@ namespace CUETools.Codecs.ALAC
bool hassize = 0 != readbits(_framesBuffer, ref pos, 1); /* the output sample size is stored soon */
int wasted_bytes = (int) readbits(_framesBuffer, ref pos, 2); /* unknown ? */
bool isnotcompressed = 0 != readbits(_framesBuffer, ref pos, 1); /* whether the frame is compressed */
uint outputSamples = hassize ? readbits(_framesBuffer, ref pos, 32) : setinfo_max_samples_per_frame;
int outputSamples = hassize ? (int)readbits(_framesBuffer, ref pos, 32) : setinfo_max_samples_per_frame;
int readsamplesize = _bitsPerSample - (wasted_bytes * 8) + channels;
int readsamplesize = pcm.BitsPerSample - (wasted_bytes * 8) + pcm.ChannelCount;
if (!isnotcompressed)
{
/* compressed */
@@ -710,10 +668,11 @@ namespace CUETools.Codecs.ALAC
else
{
/* not compressed, easy case */
int bps = pcm.BitsPerSample;
for (int i = 0; i < outputSamples; i++)
{
_outputsamples_buffer_a[i] = extend_sign32((int)readbits(_framesBuffer, ref pos, _bitsPerSample), _bitsPerSample);
_outputsamples_buffer_b[i] = extend_sign32((int)readbits(_framesBuffer, ref pos, _bitsPerSample), _bitsPerSample);
_outputsamples_buffer_a[i] = extend_sign32((int)readbits(_framesBuffer, ref pos, bps), bps);
_outputsamples_buffer_b[i] = extend_sign32((int)readbits(_framesBuffer, ref pos, bps), bps);
}
/* wasted_bytes = 0; */
_interlacing_shift = 0;
@@ -828,9 +787,9 @@ namespace CUETools.Codecs.ALAC
stream_read_uint16();
entry_remaining -= 2;
_channelCount = (int)stream_read_uint16();
int _channelCount = (int)stream_read_uint16();
_bitsPerSample = stream_read_uint16();
int _bitsPerSample = stream_read_uint16();
entry_remaining -= 4;
/* compression id */
@@ -840,13 +799,15 @@ namespace CUETools.Codecs.ALAC
entry_remaining -= 4;
/* sample rate - 32bit fixed point = 16bit?? */
_sampleRate = stream_read_uint16();
int _sampleRate = stream_read_uint16();
entry_remaining -= 2;
/* skip 2 */
stream_skip(2);
entry_remaining -= 2;
pcm = new AudioPCMConfig(_bitsPerSample, _channelCount, _sampleRate);
/* remaining is codec data */
//#if 0
@@ -904,13 +865,13 @@ namespace CUETools.Codecs.ALAC
numentries = stream_read_uint32();
size_remaining -= 4;
_time_to_sample_count = new UInt32[numentries];
_time_to_sample_duration = new UInt32[numentries];
_time_to_sample_count = new int[numentries];
_time_to_sample_duration = new int[numentries];
for (i = 0; i < numentries; i++)
{
_time_to_sample_count[i] = stream_read_uint32();
_time_to_sample_duration[i] = stream_read_uint32();
_time_to_sample_count[i] = (int)stream_read_uint32();
_time_to_sample_duration[i] = (int)stream_read_uint32();
size_remaining -= 8;
}
@@ -949,11 +910,11 @@ namespace CUETools.Codecs.ALAC
numentries = stream_read_uint32();
size_remaining -= 4;
_sample_byte_size = new uint[numentries];
_sample_byte_size = new int[numentries];
for (i = 0; i < numentries; i++)
{
_sample_byte_size[i] = stream_read_uint32();
_sample_byte_size[i] = (int)stream_read_uint32();
size_remaining -= 4;
}
@@ -1259,11 +1220,11 @@ namespace CUETools.Codecs.ALAC
Stream _IO;
byte[] _codecData;
uint[] _time_to_sample_count, _time_to_sample_duration, _sample_byte_size;
int[] _time_to_sample_count, _time_to_sample_duration, _sample_byte_size;
long _saved_mdat_pos;
bool _formatRead;
int _bitaccumulator;
uint setinfo_max_samples_per_frame;
int setinfo_max_samples_per_frame;
byte setinfo_rice_initialhistory;
byte setinfo_rice_kmodifier;
byte setinfo_rice_historymult;
@@ -1276,17 +1237,15 @@ namespace CUETools.Codecs.ALAC
predictor_t predictor_info_b;
NameValueCollection _tags;
uint _samplesInBuffer, _samplesBufferOffset;
int _samplesInBuffer, _samplesBufferOffset;
byte[] _framesBuffer;
byte[] _buff;
byte _interlacing_shift;
byte _interlacing_leftweight;
int _sampleRate;
int _channelCount;
int _bitsPerSample;
ulong _sampleCount;
ulong _sampleOffset;
ulong _iSample;
AudioPCMConfig pcm;
long _sampleCount;
long _sampleOffset;
long _iSample;
Dictionary<string, qtmovie_read_atom> _qtmovie_parsers;
Dictionary<string, object> _qtmovie_parser_params;