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477 commits

Author SHA1 Message Date
Jean-Marc Valin
6c79a9325c Getting "make dist" to work again with the files that got removed 2010-01-16 23:35:45 -05:00
Jean-Marc Valin
74128befe4 fixed-point: converted PLC filters and LPC parameters 2010-01-01 09:33:17 -05:00
Jean-Marc Valin
303b3b627e fixed-point: starting conversion of the new PLC 2009-12-30 22:40:24 -05:00
Jean-Marc Valin
07fed1bf76 Adding a safeguard against unstable LPC, so now there's no way (that I can 
think of) to produce NaNs in the new PLC.
 2009-12-28 07:59:42 -05:00
Jean-Marc Valin
d69c1cb37c Making new PLC code work in fixed-point even though it's still using float 
arithmetic.
 2009-12-28 00:34:29 -05:00
Jean-Marc Valin
aec0ee41ab C89 friendliness 2009-12-21 00:06:12 -05:00
Jean-Marc Valin
d5f99308c9 This fixes a bug in stereo PLC (offset wasn't changed between channels) 2009-12-16 22:42:32 -05:00
Jean-Marc Valin
5a0fae53c7 PLC: Added lag windowing and constraint to synthesis energy 2009-12-14 21:19:37 -05:00
Jean-Marc Valin
e14fe9046f New LPC-based PLC code 2009-12-11 00:07:31 -05:00
Jean-Marc Valin
1ccfd3cc03 Oops, forgot to free the pitch bufer 2009-12-02 21:07:11 -05:00
Jean-Marc Valin
e465c1490a Reorganised the pitch code to simplify the PLC case and fixed a buffer overflow 
introduced in Thorvald's previous patch.
 2009-11-26 00:39:36 -05:00
Jean-Marc Valin
7a7c42a716 Fixing a few memory errors 2009-11-25 20:38:52 -05:00
Jean-Marc Valin
e05e7e23bb minor code cleanup 2009-11-21 23:41:26 -05:00
Jean-Marc Valin
6d584acd95 Renamed MDCT functions to avoid symbol clashes with Vorbis 2009-11-21 21:57:44 -05:00
Jean-Marc Valin
294863bbea Temporal pitch search 2009-11-08 22:36:51 +09:00
Jean-Marc Valin
7a047ea096 prevent busting at ridiculously low bit-rate VBR 2009-10-22 00:23:56 -04:00
Jean-Marc Valin
45f1110583 Making sure the VBR controller never busts the number of bytes allowed 2009-10-22 00:13:44 -04:00
Jean-Marc Valin
25767d1ca7 Better computation of the VBR rate upper bound and reducing the coarse energy 
budget at low bitrate.
 2009-10-21 23:25:22 -04:00
Jean-Marc Valin
ab4dcc5c90 Allow coarse energy to take almost all the bits. Also, fixed a some issues with 
the VBR rate controller.
 2009-10-21 07:08:27 -04:00
Jean-Marc Valin
bd5d54adb8 New VBR rate controller that doesn't allow more than one frame worth of excess 
bit-rate
 2009-10-20 00:25:31 -04:00
Jean-Marc Valin
234969c903 Removed the _t from all the celt*_t types to avoid clashing with POSIX 2009-10-17 22:12:42 -04:00
Jean-Marc Valin
8b2ff0da5a Updated copyright notices 2009-10-17 21:40:10 -04:00
Jean-Marc Valin
30f7f813ea Changed all the celt*int*_t types to remove the _t suffix, which is reserved 
by POSIX. The other _t types that are not part of the API are still there
for now. Also, got rid of all that was left of the 64-bit types.
 2009-10-17 14:35:13 -04:00
Jean-Marc Valin
d35d677543 Constrain the pitch gain to prevent potential instabilities. 2009-10-16 23:16:47 -04:00
Jean-Marc Valin
ece94a0475 Improved error handling, and implemented celt_strerror() 2009-10-16 07:31:28 -04:00
Jean-Marc Valin
80ed147663 The number of channels is now set when creating the states rather than when 
creating the mode. This means that the same mode can be shared for mono and
stereo.
 2009-10-15 21:45:32 -04:00
Jean-Marc Valin
bf2398b049 first step for removing the number of channels from the mode 2009-10-15 07:28:19 -04:00
Jean-Marc Valin
a9947c480c merged the code for quant_bands() and unquant_bands() 2009-10-08 23:10:45 -04:00
Jean-Marc Valin
8861955d86 Doing the mdct shaping in the normalised domain, so that energy is preserved 2009-10-04 22:43:27 -04:00
Jean-Marc Valin
e12017ee2c moved the de-emphasis code to a separate function (shared between encoder and 
decoder), declared a few things static
 2009-10-03 13:57:31 -04:00
Jean-Marc Valin
de67858765 Simplifying the IMDCT 2009-10-03 10:36:27 -04:00
Jean-Marc Valin
aa4f58bde9 Simplifications to the code 2009-10-03 09:27:59 -04:00
Jean-Marc Valin
4213a7254c Demoved the divisions from the inner pitch prediction loops, bumped the version 
and bit-stream version
 2009-10-01 19:42:18 -04:00
Jean-Marc Valin
d5e5436e07 Fix for folding_decision() in stereo mode and more cleaning up of the code 
now that we no longer do normalized pitch
 2009-09-30 20:50:41 -04:00
Jean-Marc Valin
4834c92e2b More simplifications from denorm pitch 2009-09-28 19:17:34 -04:00
Jean-Marc Valin
92ae37027f enabling denorm pitch only at low bit-rate 2009-09-16 07:57:17 -04:00
Jean-Marc Valin
ab220aa212 denorm pitch works in fixed-point (though there's still some floats left) 2009-09-15 22:38:40 -04:00
Jean-Marc Valin
4c77ea96d0 doing pitch in denormalized domain 2009-09-14 22:51:55 -04:00
Jean-Marc Valin
515136a3f1 removed unused #ifdefs 2009-09-13 20:15:24 -04:00
Jean-Marc Valin
0f0da999ae Better fading for PLC: no fading for the first loss, muting after 6 2009-08-12 21:35:36 -04:00
Jean-Marc Valin
5a70097d79 C89 and 16-bit fixes 2009-08-08 13:23:03 -04:00
Jean-Marc Valin
e610864c74 This fixes a VBR bug introduced by raw bits. We should not write any raw 
bit before the rate is decided (otherwise they'll end up at the wrong place)
and we have to shrink the byte buffer before writing raw bits.
 2009-08-01 23:05:47 +02:00
Jean-Marc Valin
91f07dc125 Changing some code to use BITRES directly instead of its value. 2009-07-25 20:42:24 -04:00
Jean-Marc Valin
c08be4485b Implemented "raw bits" 
Making it so all the information encoded directly with ec_enc_bits() gets
stored at the end of the stream, without going through the range coder. This
should be both faster and reduce the effects of bit errors.

Conflicts:

	tests/ectest.c
 2009-07-23 07:33:24 -04:00
Jean-Marc Valin
cb8780ca96 C89 compatibility fixes for pseudo-stack mode. 
Conflicts:

	libcelt/celt.c
 2009-07-20 23:40:35 -04:00
Gregory Maxwell
0719f6fc25 This patch makes it safe to call the encode / decode functions with a NULL pointer in place of the pcm buffer. 2009-07-12 01:01:33 -04:00
Jean-Marc Valin
e6d832a721 Allowing frame sizes up to 1024, with pitch enabled only up to 512 2009-07-08 22:21:31 -04:00
Jean-Marc Valin
ece2cfa2d2 removed useless comments 2009-07-04 22:46:38 -04:00
Gregory Maxwell
17ea4b7e2d For some frame sizes there can be 5 shorts in a frame. 
Correct an out of bounds access in this case.
 2009-06-30 11:42:01 -04:00
Gregory Maxwell
a80958b025 Note some more platforms where float-approx is tested, fix a bug in the prediction ctl, 
and remove some dead code from bands.c.
 2009-06-29 12:48:57 -04:00