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Topic: SRLA: A lossless audio codec focused on decode speed and compression rate (Read 13330 times) previous topic - next topic
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Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #25 –
Quote from: genuine on
Also, the executable files I downloaded don't do compression, they just seem to rewrite the file.
genuine, thanks for using the codec. High-entropy audio (such as white noise) is generally hard to compress. If not, please provide me with some information so that I can help with this problem.

1. What is the command line you entered to execute the codec?
2. What is your running OS?
3. What is the input audio format?
 - Currently, SRLA supports 8-24bit WAV files only. Also, I noticed that SRLA does not support WAVEFORMATEXTENSIBLE WAV files.

It would be a great help if you could provide an input audio file.
 

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #26 –
I also used 3 versions of SRLA (latest, latest_avx2 and latest_sse41). The results are same(Windows10 X64). The processor I tried Intel Core i5-2300.

srla.exe -e test.wav out.srla
finished: 9580592 -> 9576864 ( 99.96 %)

flac.exe -o out.flac -5 test.wav
5427759

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #27 –
I think codec behaves like this in the old CPUs. But at least CPU had AVX support. Anyway, now i tried a CPU with AXV2 supported.

20 tracks, 44.1, 16 bit, stereo (840,911,660 bytes)

SRLA 0.0.10 (avx2) -m0 -> 580,672,062 bytes
Encoding 61.921 s, Decoding 37.472 s

SRLA 0.0.10 (avx2) -m4 -> 553,542,096 bytes
Encoding 92.226 s, Decoding 38.284 s

SRLA 0.0.7 (avx2) -> 552,888,600 bytes
Encoding 95.892 s, Decoding 20.501 s

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #28 –
Quote from: genuine on
I think codec behaves like this in the old CPUs. But at least CPU had AVX support.
Thank you for reporting it. I found that the codec tool unintentionally invokes AVX instructions.
I try to handle this problem by building a Win32 application. Can you try these codecs instead?
archive URL: https://github.com/aikiriao/SRLA/actions/runs/13852910671/artifacts/2751364580

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #29 –
I tested SLRA v0.0.10 on my usual testset of 16 files (stereo, 44.1Khz)

Code: [Select]
-m 4         29.305.243 [00:00:00]
-m 6         29.121.839 [00:00:01]
-m 6 -V 2    29.008.537 [00:00:02]
-m 6 -V 4    28.925.896 [00:00:16]
-m 6 -V 8    28.897.557 [01:02:52]
sac v0.7.17  26.691.259 [00:00:22]

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #30 –
Quote from: aikiriao on
Thank you for reporting it. I found that the codec tool unintentionally invokes AVX instructions.
I try to handle this problem by building a Win32 application. Can you try these codecs instead?
archive URL: https://github.com/aikiriao/SRLA/actions/runs/13852910671/artifacts/2751364580
This is the results with CPU without AVX2 support.
finished: 5292048 -> 5295586 (100.07 %)
finished: 3377108 -> 3379370 (100.07 %)
finished: 4410076 -> 4413031 (100.07 %)
finished: 4061588 -> 4064301 (100.07 %)
finished: 2757092 -> 2757972 (100.03 %)
finished: 4320784 -> 4323673 (100.07 %)
finished: 3588140 -> 3590534 (100.07 %)

However, I did a new test with the same processor with AVX2 supported. This time the decode time is much better.

MIX 10 tracks, 44.1, 16 bit, stereo (904,185,144 bytes)

SRLA 0.0.10 (avx2) -m 4 -> 545,936,257 bytes
Encoding 115.741 s, Decoding 7.716 s

SRLA 0.0.10 (avx2) -m 0 -> 604,178,724 bytes
Encoding 92.803 s, Decoding 6.493 s

FLAC 1.5 -5 --no-md5 -> 556,590,777
Encoding 8.402 s, Decoding 4.711 s

FLAC 1.5 -0 --no-md5 -> 607,321,979
Encoding 4.336 s, Decoding 5.227 s

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #31 –
Quote from: genuine on
This is the results with CPU without AVX2 support.
Thank you for reporting it. It is difficult to identify the cause of this problem, but I want to clarify it to guarantee backward compatibility.
I build the codec for the x86 CPU host. Can you run codecs?
https://github.com/aikiriao/SRLA/actions/runs/13900369490/artifacts/2764678034

And can you run a debug build codec attached to this message? This is because I want to clarify whether this problem is a compiler matter.
I'm sorry for bothering your environment.

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #32 –
This is really an interesting situation. If you have the chance to try this on a CPU that does not support AVX2, you can see the result. I don't think the issue is related to x86 or x64. Again, it works flawlessly on AVX2 supported CPUs.

srla.exe -e test.wav out.srla
finished: 9580592 -> 9576864 ( 99.96 %)

For a 50 mb file, it uses 4 times the ram (200 mb) and works very slowly. It may be because it is "Debug". And for all the other files I tried, I get the following error during the process.
Assertion failed: ((k2 + 1) + 1) <= 32, file C:\Users\aikiriao-ryzen\Desktop\works\SRLA\libs\srla_coder\src\srla_coder.c, line 584

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #33 –
Quote from: genuine on
Assertion failed: ((k2 + 1) + 1) <= 32, file C:\Users\aikiriao-ryzen\Desktop\works\SRLA\libs\srla_coder\src\srla_coder.c, line 584
Thanks again. It is beneficial to me.
I found that I use LZCNT operation, which some Intel CPUs do not support.
Instead, I built another codec that uses a more portable operation. Can you try this?
https://github.com/aikiriao/SRLA/actions/runs/13911348204/artifacts/2768614862

Re: SRLA: A lossless audio codec focused on decode speed and compression rate

Reply #34 –
I think there was a problem with the forum and what i wrote was deleted. Okay, it works fine as it is.
12 tracks, 44.1, 16 bit, stereo (585,144,122 bytes)

Quote
SRLA 0.0.10 (sse41) -m 6 -> 393,959,679 bytes
Encoding 189.021 s, Decoding 7.496 s

SRLA 0.0.10 (sse41) -m 4 -> 394,469,100 bytes
Encoding 117.127 s, Decoding 7.056 s

SRLA 0.0.10 (sse41) -m 0 -> 421,118,005 bytes
Encoding 94.398 s, Decoding 5.071 s
Quote
FLAC 1.5 -8 --no-md5 -> 401,192,090
Encoding 23.172 s, Decoding 5.210 s

FLAC 1.5 -5 --no-md5 -> 403,602,181
Encoding 8.053 s, Decoding 4.849 s

FLAC 1.5 -0 --no-md5 -> 432,450,718
Encoding 4.350 s, Decoding 5.107 s
Quote
HALAC 0.3.8 -normal -> 404,597,742
Encoding 3.150 s, Decoding 4.239 s

HALAC 0.3.8 -fast -> 411,483,100
Encoding 2.586 s, Decoding 3.819 s

HALAC 0.3.8 -ufast -> 425,071,585
Encoding 2.313 s, Decoding 2.748 s