ref: 781399219876b627e87cb3a9221bf06ae39e101c
dir: /ChangeLog/
2003-12-14 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/api.html doc/api_misc.html
Add documentation for conversions functions.
* doc/faq.html
Add Q/A about detecting presence of libsamplerate.
2003-12-13 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.h src/samplerate.c
Added functions for short->float and float->short conversions on arrays
of data. This will make it a little easier for people who need the
input or output data in shorts rather than floats.
* configure.ac
Added tests for CPU clipping mode which was required for the float to
short conversion.
* tests/float_short_test.c
New code for testing the new functionality.
2003-10-28 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/src_zoh.c src/src_linear.c
Fixed an off-by-one indexing issue which was causing distortion at the
boundaries between calls to src_process().
* tests/multi_channel_test.c
Finally passing tests for all three access methods (simple, process and
callback).
2003-10-27 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/calc_snr.c
SNR calculation was being screwed up because the peak detector was
mistaking side lobes caused by the windowded FFT as noise/aliasing peaks.
Therefore added code to wipe out the troughs between peaks which erases
the side lobe peaks without affecting the noise/aliasing peaks.
* tests/multi_channel_test.c
Added a callback_test to work on multiple channels.
2003-10-14 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.h
Add definitions for the callback based API (src_callback_new and
src_callback_read).
* doc/*.html
Add link to faq.html.
* doc/faq.html
Add a new question/answer.
* src/samplerate.c tests/callback_test.c
Move callback functions (src_callback_new and src_callback_read) from
callback_test.c to samplerate.c
Add checking to make sure that an SRC_STATE object created with
src_callback_new() is not used with src_process() etc.
* examples/varispeed.c
Add #include <stdlib.h> to prevent compiler warning.
* src/samplerate.h
Add definitions for the callback based API.
* src/Version_script.in
Add entries for two new public functions.
2003-10-12 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/callback_test.c
More work on getting callback based API working.
* tests/termination_test.c
Tightened up the test pass crieria yet again. This shows up problems
with the ZOH and Linear converters.
* src/src_zoh.c src/src_linear.c
Fixed problems with converters shown up by improved tests.
2003-09-25 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/api.html
Be more explicit about the inclusion of <samplerate.h>.
2003-09-21 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* examples/sndfile-resample.c examples/audio_out.c
Add include for <stdlib.h>.
* configure.ac
Check for libsndfile >= 1.0.6.
* examples/sndfile-resample.c
Turn on clipping of output when saving to integer PCM output formats.
2003-08-21 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/callback_test.c
Start work on a callback based API. The implementation will be done
in this test program first and when it is working, the code that does
the work will be moved back to the library code.
2003-08-19 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/bugs.html
New file detailing how to submit bug reports for SRC.
2003-08-13 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* libsamplerate.spec.in
Apply corrections from Giuliano Pochini.
2003-08-05 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/snr_bw_test.c
Added test for conversion ratio of 1.0 for all converters. For this
conversion ratio, all converters have a better than 149db SNR ratio.
* src/src_linear.c
Changes to make this converter work more like src_zoh.c.
2003-05-04 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/quality.html
Fixed a couple of broken links pointed out by Anand Kumria.
2003-05-03 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.h
Add URL of API documentation to the top of file.
* doc/api_misc.html
Clarify use of SRC_DATA struct.
2003-04-29 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/reset_test.c
Add call to src_set_ratio() to test that this function has been exported.
2003-03-24 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* samplerate.pc.in
Changed 'sndfile' to 'samplerate'.
2003-02-08 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/src_zoh.c
Fixed a bug causing clicks in the output data.
2003-02-07 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.c
Fixed a compiler warning.
* tests/termination_test.c
Tightened up the test pass crieria.
* src/src_sinc.c
Fixed bug showed up by new termination tests.
2003-02-04 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* examples/sndfile-resample.c
Fixed a bug which was messing up handling of multi-channel files.
* tests/multi_channel_test.c
Disabled all the new code.
2003-02-03 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/multi_channel_test.c
Rehacking multi-channel tests to find possible problems in src_process()
when processing multichannel data. Need to use signal to noise ratio
measurements.
* tests/Makefile.am
Mods to add calc_snr.c and utils.c to build of multi_channel_test.
* tests/util.[ch]
Add functions for interleaving and de-interleaving data.
2003-01-24 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* Win32/config.h
Added Win32 specific #pragma to disable warnings when double precision
constants are assigned to floats.
* tests/calc_snr.c
Added #include <string.h> to prevent compiler warning about use of memset()
function.
2003-01-13 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.[ch]
Added function src_set_ratio() at the suggestion of Dr William Bland.
* doc/api_full.html
Added docs for above function.
2003-01-11 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* examples/Makefile.am tests/Makefile.am
Fixes for Mac OSX.
Tidy up handling addition of SNDFILE_CFLAGS
2003-01-08 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* Win32/config.h
Disabled HAVE_STDINT_H for Win32.
* Win32/unistd.h
Added empty header file for Win32.
* src/audio_out.c
Final fixes to get audio out working on Win32.
2003-01-05 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/src_sinc.c
Phase one or refactoring. Replace use of a circular buffer to hold short
window of data with a linear buffer.
Linear buffer requires that data is periodically copied from the end if
the buffer back to the beginning. However, it also means that the
calc_output() function no longer needs to calculate the next data index
modulo the buffer length.
Since the data index is calculated 40 times (minimum) per output sample,
and the copy from end of buffer to start of buffer is done every 1000 or
so output samples, this change results in a significant speedup (up to
about 50% improvement for SRC_SINC_FASTEST).
Memory use has increased somewhat (max 6k per channel per converter) due
to this fix, but that should go down again during next phase of
refactoring.
* examples/varispeed-play.c
Fixed a bug where data_in and data_out buffers were overlapping.
2003-01-03 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/win32.html
Completed documentation on compiling for Win32.
* doc/*.html
Added links to Win32 compiling information.
* configure.ac tests/Makefile.am
Detect libefence and link it to all the test programs if configued
with --enable-debug.
* tests/utils.[ch]
New function force_efence_banner().
* tests/*test.c
Add a call to force_efence_banner() to force printing of the Electric Fence
banner at start of program.
2003-01-02 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* configure.ac
Added --enable-debug configuration flag.
* tests/termination_test.c
More modifications to catch corner cases.
Added extra test to check for negative return values for input_frames_used
and output_frames_gen fields of SRC_DATA.
* src/src_zoh.c src/src_linear.c
Fixed more bugs found using modified streaming_test.
* src/samplerate.c
Set input_frames and output_frames of SRC_DATA to zero if they are negative.
Add check for overlapping SRC_DATA data_in and data_out arrays.
* doc/api_full.html
Document the fact that the SRC_DATA->data_in and data_out arrays may not
overlap. Thanks to Paul Davis for pointing out this documentation oversight.
2002-12-24 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/termination_test.c tests/streaming_test.c
Merged these two test programs into termination_test.c.
* tests/Makefile.am
Modified for above change.
* src/src_zoh.c src/src_linear.c
Fixed bug found using modified streaming_test.
2002-12-21 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.c src/src_*.c
Changed the way multichannel accounting was done.
2002-12-20 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/snr_bw_test.c
Rearranged order of tests.
2002-12-17 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* doc/lists.html
Added "subscribe" HREF.
2002-12-15 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/src_zoh.c src/src_linear.c
Fixed a bug which was causing an incorrent number of output samples to be
generated for a given conversion ratio and number of input samples.
* tests/streaming_test.c tests/termination_test.c
Modified pick up the above problem if it returns.
2002-12-14 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* tests/streaming_test.c
Modified to mix long and short input buffers. This will help testing of
smooth switching between standard sinc_process() and long_sinc_process().
2002-12-11 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* examples/audio_out.c
More hacking to get this working on Win32.
* tests/src-evaluate.c
More work.
2002-12-05 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/samplerate.[ch] src/Version_script.in Win32/libsamplerate.def
Added function src_get_version() to return a version string.
* examples/sndfile-resample.c
Add "--version" option to print out a version string.
* tests/src-evaluate.c
New file. This program will be used to evaluate other sample rate
converters for comparison to the rabbit.
* tests/calc_snr.[ch] tests/snr_bw_test.c
Minor changes required by src-evaluate program.
2002-12-04 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* Win32/config.h
New file for Win32. When building for Win32, this file gets copied into the
src/ directory.
* Make.bat
First attempt to see if this works.
* src/*.[ch]
Changed name of SRC_PRIVATE filed errno to error because the brain damaged
Win32 compiler was barfing.
2002-12-03 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* examples/audio_out.c
Now working on MacOSX.
* examples/varispeed-play.c
Add ability to choose converter.
2002-12-03 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* configure.ac
Fixes for MacOSX.
* examples/new-varispeed-play.c examples/varispeed-play.c
The first file replaces the later.
2002-12-02 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/float_cast.h
New file for lrint() and lrintf().
* src/common.h src/src_*.c
Add workaround for systems without <stdint.h>.
Add #include "float_cast.h" to pick up replacement lrint() and lrintf()
functions.
* examples/audio_out.c
Fixes for the case where libsndfile is not found.
* new-varispeed-play.c
Fixes for Solaris. Now works.
2002-11-29 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* src/high_qual_coeffs.h
Conrad Parker found a file which produced clicking when run thru the
SRC_SINC_BEST_QUALITY filter. Recalculated the filter with slightly less
stringent design parameters and fixed the problem. The band with of the
new filter is 96.6% while the old one was a little ober 97%.
2002-11-28 Erik de Castro Lopo <erikd AT mega-nerd DOT com>
* All files.
libsamplerate is working. There have been a couple of private releases
for people to test but no public release.