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add FLAC__bitbuffer_read_byte_block_aligned()

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This commit is contained in:
Josh Coalson 2002-05-07 05:32:03 +00:00
parent bf9325f2f2
commit 8c84e19252
2 changed files with 32 additions and 0 deletions
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31
src/libFLAC/bitbuffer.c
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@ -1837,6 +1837,37 @@ FLaC__INLINE FLAC__bool FLAC__bitbuffer_read_raw_uint32_little_endian(FLAC__BitB
return true;
}
FLAC__bool FLAC__bitbuffer_read_byte_block_aligned(FLAC__BitBuffer *bb, FLAC__byte *val, unsigned nvals, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data)
{
FLAC__ASSERT(bb != 0);
FLAC__ASSERT(bb->buffer != 0);
FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(bb));
FLAC__ASSERT(FLAC__bitbuffer_is_consumed_byte_aligned(bb));
#if FLAC__BITS_PER_BLURB == 8
while(nvals > 0) {
unsigned chunk = min(nvals, bb->blurbs - bb->consumed_blurbs);
if(chunk == 0) {
if(!bitbuffer_read_from_client_(bb, read_callback, client_data))
return false;
}
else {
if(0 != val) {
memcpy(val, bb->buffer + bb->consumed_blurbs, FLAC__BYTES_PER_BLURB * chunk);
val += FLAC__BYTES_PER_BLURB * chunk;
}
nvals -= chunk;
bb->consumed_blurbs += chunk;
bb->total_consumed_bits = (bb->consumed_blurbs << FLAC__BITS_PER_BLURB_LOG2);
}
}
#else
@@@ need to write this still
FLAC__ASSERT(0);
#endif
return true;
}
FLaC__INLINE FLAC__bool FLAC__bitbuffer_read_unary_unsigned(FLAC__BitBuffer *bb, unsigned *val, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data)
#ifdef FLAC__NO_MANUAL_INLINING
{

1
src/libFLAC/include/private/bitbuffer.h
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@ -124,6 +124,7 @@ FLAC__bool FLAC__bitbuffer_read_raw_int32(FLAC__BitBuffer *bb, FLAC__int32 *val,
FLAC__bool FLAC__bitbuffer_read_raw_uint64(FLAC__BitBuffer *bb, FLAC__uint64 *val, const unsigned bits, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data);
FLAC__bool FLAC__bitbuffer_read_raw_int64(FLAC__BitBuffer *bb, FLAC__int64 *val, const unsigned bits, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data);
FLAC__bool FLAC__bitbuffer_read_raw_uint32_little_endian(FLAC__BitBuffer *bb, FLAC__uint32 *val, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data); /*only for bits=32*/
FLAC__bool FLAC__bitbuffer_read_byte_block_aligned(FLAC__BitBuffer *bb, FLAC__byte *val, unsigned nvals, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data); /* val may be 0 to skip bytes instead of reading them */
FLAC__bool FLAC__bitbuffer_read_unary_unsigned(FLAC__BitBuffer *bb, unsigned *val, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data);
#ifdef FLAC__SYMMETRIC_RICE
FLAC__bool FLAC__bitbuffer_read_symmetric_rice_signed(FLAC__BitBuffer *bb, int *val, unsigned parameter, FLAC__bool (*read_callback)(FLAC__byte buffer[], unsigned *bytes, void *client_data), void *client_data);