Re: C program for playing sound
Gerhard Wolfstieg <[email protected]>
| Newsgroups | gmane.linux.alsa.user |
|---|---|
| Message-ID | <[email protected]> |
Hello together! On Wed, 24 Jun 2020 17:37:46 -0300 Sleep <[email protected]> schrieb: > // Insert samples to framebuffer. > wav = fopen("pcm1611s.wav", "r"); > fseek(wav, 0L, SEEK_END); > size = ftell(wav); > fseek(wav, 0L, SEEK_SET); > buffer = malloc(size); > fread(buffer, sizeof(int16_t), size, wav); > fclose(wav); > size /= sizeof(int16_t); > > // Set ptrbuffer 46 bytes ahead to skip the header. > for (int16_t *ptrbuffer = buffer + 46; size > ptrbuffer - buffer; > ptrbuffer += FRAMEBUFFERSIZE * STEREO * BITS) > { I would: avoid the #defines as far as possible and fetch the values out of the RIFF-header; first read the RIFF-header and with its contents calculate starting point and length of data. It is not guaranteed that the line with „for(“ (always) works – this as a qick response … Grüße, Gerhard _______________________________________________ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user