Displaying 6 results from an estimated 6 matches for "local_lpc_restore_signal".
2004 Sep 10
3
Altivec, automake
I think I've gotten FLAC__lpc_restore_signal() about as good as I'm going to
get it.
Here's what I have:
-a new file, lpc_asm.s, which has the assembly routines
-changes to cpu.h, cpu.c, and stream_decoder.c to enable them
-changes to configure.in to support the new cpu stuff
-a preliminary Makefile.am
-maybe something else I'm forgetting
Now automake complains that configure.in
2004 Sep 10
2
Altivec, automake
...======================================
RCS file: /cvsroot/flac/flac/src/libFLAC/stream_decoder.c,v
retrieving revision 1.87
diff -c -r1.87 stream_decoder.c
*** stream_decoder.c 20 May 2003 00:01:50 -0000 1.87
--- stream_decoder.c 25 Jul 2004 23:17:39 -0000
***************
*** 101,110 ****
void (*local_lpc_restore_signal)(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]);
void (*local_lpc_restore_signal_64bit)(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, F...
2004 Sep 10
1
lpc slowdown
...quot;
#include "private/fixed.h"
@@ -1738,10 +1739,11 @@
/* decode the subframe */
memcpy(decoder->private_->output[channel], subframe->warmup, sizeof(FLAC__int32) * order);
- if(bps <= 16 && subframe->qlp_coeff_precision <= 16)
- decoder->private_->local_lpc_restore_signal_16bit(decoder->private_->residual[channel], decoder->private_->frame.header.blocksize-order, subframe->qlp_coeff, order, subframe->quantization_level, decoder->private_->output[channel]+order);
- else if(bps + subframe->qlp_coeff_precision + order <= 32)
- decoder->...
2014 Jun 19
5
[PATCH] stream_encoder : Improve selection of residual accumulator width
...unusual data the residual signal can be
wider than bps. The FLAC format specification doesn't seem to mention
this. Should it be treated as a valid FLAC stream? Based on the
analysis above, the currently used check allows residuals at most 1
bit wider than bps. Another problem could be that the
local_lpc_restore_signal_16bit function may truncate the residual to
16 bits.
--
Miroslav Lichvar
2014 Jun 19
1
[PATCH] stream_encoder : Improve selection of residual accumulator width
...XTRA_RESIDUAL_BPS <= 16 && qlp_coeff_precision <= 16)
> vs. read_subframe_lpc_():
>
> if(bps + subframe->qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
> if(bps <= 16 && subframe->qlp_coeff_precision <= 16)
> decoder->private_->local_lpc_restore_signal_16bit(...);
> else
> decoder->private_->local_lpc_restore_signal(...);
> else
> decoder->private_->local_lpc_restore_signal_64bit(...);
--
Miroslav Lichvar
2004 Sep 10
1
Error initializing flac stream decoder.
I changed just the FLAC__EntropyCodingMethod_PartitionedRice struct, but
it hasn't changed a thing. I'm still getting the same behaviour.
typedef struct {
unsigned order;
unsigned parameters[1 << 6];
unsigned raw_bits[1 << 6];
} FLAC__EntropyCodingMethod_PartitionedRice;
Any other thoughts?
Thanks,
Reza
Josh Coalson wrote:
> --- Reza Naima