diff options
Diffstat (limited to 'autoart/autoaudio.go')
| -rw-r--r-- | autoart/autoaudio.go | 64 |
1 files changed, 33 insertions, 31 deletions
diff --git a/autoart/autoaudio.go b/autoart/autoaudio.go index 05a91d4..cc5965e 100644 --- a/autoart/autoaudio.go +++ b/autoart/autoaudio.go @@ -20,37 +20,39 @@ along with AutoArt. If not, see <https://www.gnu.org/licenses/>. package autoart import ( - "github.com/pommicket/autoart/autoutils" - "io" + "github.com/pommicket/autoart/autoutils" + "io" ) func GenerateAudio(output io.Writer, duration float64, sampleRate int32, - functionLength int, rectifier int) error { - samples := int64(duration * float64(sampleRate)) - err := autoutils.WriteAudioHeader(output, samples, 1, sampleRate) - if err != nil { return err } - - vars := make([]float64, 1) - const sampleBufferSize = 4096 - sampleBuffer := make([]uint8, sampleBufferSize) - sampleBufferIndex := 0 - - var function autoutils.Function - function.Generate(1, functionLength) - - for s := int64(0); s < samples; s++ { - t := float64(s) / float64(sampleRate) - vars[0] = t - value := rectify(function.Evaluate(vars), rectifier) - sampleBuffer[sampleBufferIndex] = uint8(255 * value) - sampleBufferIndex++ - if sampleBufferIndex == sampleBufferSize { - err = autoutils.WriteAudioSamples(output, sampleBuffer) - if err != nil { - return err - } - sampleBufferIndex = 0 - } - } - return autoutils.WriteAudioSamples(output, sampleBuffer[:sampleBufferIndex]) -}
\ No newline at end of file + functionLength int, rectifier int) error { + samples := int64(duration * float64(sampleRate)) + err := autoutils.WriteAudioHeader(output, samples, 1, sampleRate) + if err != nil { + return err + } + + vars := make([]float64, 1) + const sampleBufferSize = 4096 + sampleBuffer := make([]uint8, sampleBufferSize) + sampleBufferIndex := 0 + + var function autoutils.Function + function.Generate(1, functionLength) + + for s := int64(0); s < samples; s++ { + t := float64(s) / float64(sampleRate) + vars[0] = t + value := rectify(function.Evaluate(vars), rectifier) + sampleBuffer[sampleBufferIndex] = uint8(255 * value) + sampleBufferIndex++ + if sampleBufferIndex == sampleBufferSize { + err = autoutils.WriteAudioSamples(output, sampleBuffer) + if err != nil { + return err + } + sampleBufferIndex = 0 + } + } + return autoutils.WriteAudioSamples(output, sampleBuffer[:sampleBufferIndex]) +} |