China DOS Union

Description: This is a sound player that supports AC97 sound cards, enabling the integrated AC97 sound card to make sound in pure DOS.

WW1) Improved interface:
2) Supports various data combination formats
3) Supports data below 44.1k (although the effect is not good because it is interpolated to 44.1k by software for playback, so the effect is not too good. I hope everyone can find a better way)
Next work plan: can support MP3 file playback, add a playlist.

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Source code for everyone to study

Haha, upgraded to version 1.12: Corrections are as follows:
1. Thoroughly solved the problem of incorrect total time display. Rushon, pay attention. The calculation method should be TotalTime = wHead.fileSize / wHead.nSamplePerSec; while you wrote TotalTime = wHead.dataSize / wHead.nSamplePerSec; so it always showed hundreds of minutes.
2. Corrected spelling errors (Rushon, it seems you didn't correct them).
3. The sentence "printf("Press < + - > to Volume contorl <P> to Pause Other KEY to stop\n"; This is very important, how did it get lost? I added it.
Comprehensive testing has been done, and the following problems exist:
The channel problem is well solved, and the bit number problem is okay, but the sound becomes quieter when it is 8-bit. The frequency problem is actually still very big. When it is lower than 22k, it really sounds like a hoarse throat. Even when the volume is reduced to 0, there is still noise. The original way I solved the mono problem was to send the same data to two channels, using the w_mixing function instead of w_mixing_stereo. I don't know how Rushon did it. Is it software interpolation? My level is low, I can't understand it very well. It seems you used the w_mixing_stereo function all the time.
Hope Rushon will make persistent efforts to solve the problem at low frequencies.
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1. Completely solve the problem of incorrect total time display. Rushon, pay attention. The calculation method should be TotalTime = wHead.fileSize / wHead.nSamplePerSec; while you wrote TotalTime = wHead.dataSize / wHead.nSamplePerSec; so it always shows hundreds of minutes. ======================================================== wHead.fileSize is the total length of the file minus 4. wHead.dataSize is the length of the data. I tested other files and there were no problems. Hehe, maybe it's caused by your recording software. But it's good to change it.
2. Correct the misspelled word (Rushon, it seems you didn't correct it). Indeed, I modified it during working hours. I was a bit anxious to release the new version. Thank you for the correction.
3. printf("Press < + - > to Volume contorl <P> to Pause Other KEY to stop\n"; This sentence is very important. How did it get lost? I added it. ======================================================== Indeed, I forgot. Hehe.
Comprehensively tested, the following problems exist:
The channel problem is solved well, and the bit number problem is okay, but the sound becomes quieter when it's 8-bit. ======================================================== Because the value of 8-bit data must be smaller than that of 16-bit. I have multiplied this value by 16, and it can be corrected again because it will be distorted if it's too large. The frequency problem is actually still very big. When it's lower than 22k, it really sounds like a hoarse person's throat. Even when the volume is reduced to 0, there is still noise. I can't find the reason for this noise so far. Because I can't find a way to solve the problem of reducing the playback frequency now, so I can only take the current data twice and play it according to 48000. I don't know why there is noise. Then, my original way to solve the mono problem was to send the same data to two channels, using the w_mixing function instead of w_mixing_stereo. I don't know how Rushon did it. Is it software interpolation? ======================================================== I did the same as your method. It's just that I sent it well when getting the data. I have low level, so I can't understand it very well. It seems you all use the w_mixing_stereo function. ======================================================== You are too modest. Actually, it's not that complicated.
Hope Rushon makes persistent efforts to solve the problem at low frequencies. ======================================================== Finally, thank you for your participation.

I just made multiple updates and modifications based on version 1.12 and upgraded to version 1.13. The updates and modifications include:
1: Deleted some useless functions left before;
2: Corrected spelling and grammar errors in multiple places of the program's displayed information, and standardized some error messages, etc.;
3: Made some adjustments to the content on the interface, such as displaying sound card information, etc.;
4: This is the most important update: Added support for command-line parameters or playing file names! For example: wplay file.wav can directly play file.wav without having to run it and then manually enter it (of course, you can also manually enter it); wplay /? can display help information, etc.
In addition, other minor modifications were made, such as pressing the Q key during playback to directly exit the program.
You can download it here:
Open attachment
P.S. It seems that we are really like the authors or editors of GNU open-source programs now. Why not release this program under the GNU GPL license? If everyone agrees, we can also add commands like wplay -l to display copyright information, etc.

Firmly support

Can wengier solve the problem of noise in programs playing at 22k?

Regarding Resampling...... You can refer to Shibatch SSRC http://shibatch.sourceforge.net/download/ssrc-1.29.zip

There is also a Noise sharping filter for SSRC
http://shibatch.sourceforge.net/download/dmaker.0.1.tgz

Undoubtedly support

Well, since everyone supports it, I just updated WPLAY to version 1.14:
1: Added that when entering WPLAY /L (case-insensitive), the GNU copyright information is displayed. Also added some display information for WPLAY /?;
2: When the file name to be played entered manually after running is empty, it automatically prompts whether to exit. Press Y to exit, otherwise return (if exit is entered in the file name, this question is not asked);
3: Discovered and corrected the phenomenon of abnormal continued operation due to the FOR loop after certain error messages (such as Wrong file type) existing in all versions from 1.11 to 1.13.
You can download the updated version 1.14 here:
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Rushon: I didn't think of any solution to the sound effect problem below 22K, but you can refer to the link provided by Roy above.

For the decoding library, you can refer to VideoLAN player (supports AAC, AC3/A52, MP3, OGG, FLAC, etc.) http://www.videolan.org/vlc/download-sources.html

to :wengier Hope you can add a playlist function, that is, the *.lst text file has all the file paths of the played files. If you use wplayer *.lst, you can loop play the songs inside.

Upgrade to version 1.15:
1. In version 1.14, entering wplay/? shows Error: Invalid option in command line. It seems that '?' cannot match case '?', even if changed to case 63 (63 is the character code of?), so I changed it to case 'h'. To get help information, use wplay/h.
2. In 1.14, the name Rushon was written as ruston, which has been corrected.
3. There are minor corrections to the help information.

Too confused, actually didn't upload it. Now here it is Open attachment