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better error reporting/handling around channels

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This commit is contained in:
Emil Lerch 2025-09-30 14:48:20 -07:00
parent 520eeeb99e
commit 3bb4b45dde
Signed by: lobo
GPG key ID: A7B62D657EF764F8
2 changed files with 30 additions and 9 deletions
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1
src/main.zig
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@ -209,6 +209,7 @@ const SpeechHandler = struct {
const writer = stream.writer();
try writer.print("{s}", .{error_info.message});
try writer.print("\n\tCode: {}", .{error_info.error_code});
if (error_info.context) |context|
try writer.print("\n\tContext: {s}", .{context});

38
src/stt.zig
View file

@ -45,6 +45,15 @@ pub const SttError = error{
Timeout,
/// Internal library error (should not normally occur)
InternalError,
SetAccessError,
SetFormatError,
SetChannelError,
SetSampleRateError,
SetBufferSizeError,
SetPeriodSizeError,
ApplyParametersError,
PcmPrepareError,
};
/// Detailed error information structure
@ -400,38 +409,49 @@ pub const AlsaCapture = struct {
// Set access type to interleaved
err = c.snd_pcm_hw_params_set_access(self.pcm_handle, hw_params, c.SND_PCM_ACCESS_RW_INTERLEAVED);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.SetAccessError;
// Set sample format to 16-bit signed little endian
err = c.snd_pcm_hw_params_set_format(self.pcm_handle, hw_params, c.SND_PCM_FORMAT_S16_LE);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.SetFormatError;
// Set number of channels
err = c.snd_pcm_hw_params_set_channels(self.pcm_handle, hw_params, self.channels);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) {
// SAFETY: min/max is set in c calls before use just below
var min: c_uint = undefined;
// SAFETY: min/max is set in c calls before use just below
var max: c_uint = undefined;
err = c.snd_pcm_hw_params_get_channels_min(hw_params, &min);
if (err < 0) return SttError.SetChannelError;
err = c.snd_pcm_hw_params_get_channels_max(hw_params, &max);
if (err < 0) return SttError.SetChannelError;
std.log.err("error setting number of channels. Must be between {d} and {d}", .{ min, max });
return SttError.SetChannelError;
}
// Set sample rate
var actual_rate = self.sample_rate;
err = c.snd_pcm_hw_params_set_rate_near(self.pcm_handle, hw_params, &actual_rate, null);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.SetSampleRateError;
// Set buffer size
var actual_buffer_size: c.snd_pcm_uframes_t = self.buffer_size;
err = c.snd_pcm_hw_params_set_buffer_size_near(self.pcm_handle, hw_params, &actual_buffer_size);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.SetBufferSizeError;
// Set period size
var actual_period_size: c.snd_pcm_uframes_t = self.period_size;
err = c.snd_pcm_hw_params_set_period_size_near(self.pcm_handle, hw_params, &actual_period_size, null);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.SetPeriodSizeError;
// Apply hardware parameters
err = c.snd_pcm_hw_params(self.pcm_handle, hw_params);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.ApplyParametersError;
// Prepare the PCM for use
err = c.snd_pcm_prepare(self.pcm_handle);
if (err < 0) return SttError.AudioDeviceError;
if (err < 0) return SttError.PcmPrepareError;
}
/// Close ALSA device
@ -690,7 +710,7 @@ pub const SttSession = struct {
/// Audio capture thread function with comprehensive error handling
fn audioThreadFn(self: *SttSession) void {
var retry_count: u32 = 0;
const max_retries = 5;
const max_retries = 5; // not sure this needs retries...
const retry_delay_ms = 100;
var consecutive_errors: u32 = 0;
const max_consecutive_errors = 20;