Home	Forums	What's new	Resources

jo_audio_load_pcm() Truncating Audio

slinga - Jun 6, 2020

		slinga		Jun 6, 2020
			When I play my PCM audio file it plays back only ~2s of my 3s clip. Code: jo_audio_load_pcm("LIFEU.PCM", JoSoundStereo8Bit, &g_Assets.lifeUpPCM); jo_audio_play_sound(&g_Assets.lifeUpPCM); The mp3 itself: Audio file with ID3 version 2.3.0, contains:MPEG ADTS, layer III, v1, 160 kbps, 44.1 kHz, Stereo Converting with ffmpeg: ffmpeg -i life-up.mp3 -f s8 -ac 1 -ar 44100 100.PCM Verifying with ffplay the PCM file is correct: ffplay -f s8 -ar 44.1k -ac 1 100.PCM , 44.1 kHz, Stereo Any advice on what I'm doing wrong? Is this a bug in Jo Engine? Thanks in advance.

		Ponut		Jun 6, 2020
			What is the file size? Should be about 133kb. I suspect this is too large and jo's loading buffer doesn't have enough room. You can try using GFS functions to manually load the file to a low-work ram address and try to use SGL playback abstractions from there.

		slinga		Jun 7, 2020
			Thanks for the reply. The file is 173 kb. When Jo Engine fails to load a file it errors out with a debug message. The file appears to be loading successfully. I also extended the heap previously onto the low work RAM area.

		slinga		Nov 30, 2020
			What are recommended settings for PCM files? Should I drop the 44.1 kHz down? 8000 kHz? I have a really long bootup time for my game so I'm looking for ways to drop file size.